Merge branch 'topic/cx25821' into patchwork

* topic/cx25821: (31 commits)
  [media] cx25821: remove cx25821-audio-upstream.c from the Makefile
  [media] cx25821: replace custom ioctls with write()
  [media] cx25821: drop cx25821-video-upstream-ch2.c/h
  [media] cx25821: add output format ioctls
  [media] cx25821: prepare querycap for output support
  [media] cx25821: group all fmt functions together
  [media] cx25821: setup output nodes correctly
  [media] cx25821: remove references to subdevices that aren't there
  [media] cx25821: remove custom ioctls that duplicate v4l2 ioctls
  [media] cx25821: g/s/try/enum_fmt related fixes and cleanups
  [media] cx25821: switch to v4l2_fh, add event and prio handling
  [media] cx25821: replace resource management functions with fh ownership
  [media] cx25821: move vidq from cx25821_fh to cx25821_channel
  [media] cx25821: remove 'type' field from cx25821_fh
  [media] cx25821: use core locking
  [media] cx25821: remove unnecessary debug messages
  [media] cx25821: remove TRUE/FALSE/STATUS_(UN)SUCCESSFUL defines
  [media] cx25821: convert to the control framework
  [media] cx25821: embed video_device, clean up some kernel log spam
  [media] cx25821: remove bogus dependencies
  ...

15 files changed, 782 insertions, 3245 deletions

diff --git a/drivers/media/pci/cx25821/Kconfig b/drivers/media/pci/cx25821/Kconfig
index 4017c9420348..6439a847680c 100644
--- a/drivers/media/pci/cx25821/Kconfig
+++ b/drivers/media/pci/cx25821/Kconfig
@@ -1,14 +1,9 @@
 config VIDEO_CX25821
 	tristate "Conexant cx25821 support"
-	depends on DVB_CORE && VIDEO_DEV && PCI && I2C
+	depends on VIDEO_DEV && PCI && I2C
 	select I2C_ALGOBIT
 	select VIDEO_BTCX
-	select VIDEO_TVEEPROM
-	depends on RC_CORE
-	select VIDEOBUF_DVB
 	select VIDEOBUF_DMA_SG
-	select VIDEO_CX25840
-	select VIDEO_CX2341X
 	---help---
 	  This is a video4linux driver for Conexant 25821 based
 	  TV cards.
diff --git a/drivers/media/pci/cx25821/Makefile b/drivers/media/pci/cx25821/Makefile
index caa32b7b51f8..fb76c3d3713a 100644
--- a/drivers/media/pci/cx25821/Makefile
+++ b/drivers/media/pci/cx25821/Makefile
@@ -1,14 +1,9 @@
 cx25821-y   := cx25821-core.o cx25821-cards.o cx25821-i2c.o \
 		       cx25821-gpio.o cx25821-medusa-video.o \
-		       cx25821-video.o cx25821-video-upstream.o \
-		       cx25821-video-upstream-ch2.o \
-		       cx25821-audio-upstream.o
+		       cx25821-video.o cx25821-video-upstream.o
 
 obj-$(CONFIG_VIDEO_CX25821) += cx25821.o
 obj-$(CONFIG_VIDEO_CX25821_ALSA) += cx25821-alsa.o
 
 ccflags-y += -Idrivers/media/i2c
 ccflags-y += -Idrivers/media/common
-ccflags-y += -Idrivers/media/tuners
-ccflags-y += -Idrivers/media/dvb-core
-ccflags-y += -Idrivers/media/dvb-frontends
diff --git a/drivers/media/pci/cx25821/cx25821-alsa.c b/drivers/media/pci/cx25821/cx25821-alsa.c
index 1858a45dd081..81361c26c54e 100644
--- a/drivers/media/pci/cx25821/cx25821-alsa.c
+++ b/drivers/media/pci/cx25821/cx25821-alsa.c
@@ -59,7 +59,6 @@ do {									\
 	Data type declarations - Can be moded to a header file later
  ****************************************************************************/
 
-static struct snd_card *snd_cx25821_cards[SNDRV_CARDS];
 static int devno;
 
 struct cx25821_audio_buffer {
@@ -151,7 +150,7 @@ static int _cx25821_start_audio_dma(struct cx25821_audio_dev *chip)
 {
 	struct cx25821_audio_buffer *buf = chip->buf;
 	struct cx25821_dev *dev = chip->dev;
-	struct sram_channel *audio_ch =
+	const struct sram_channel *audio_ch =
 	    &cx25821_sram_channels[AUDIO_SRAM_CHANNEL];
 	u32 tmp = 0;
 
@@ -627,34 +626,6 @@ static DEFINE_PCI_DEVICE_TABLE(cx25821_audio_pci_tbl) = {
 MODULE_DEVICE_TABLE(pci, cx25821_audio_pci_tbl);
 
 /*
- * Not used in the function snd_cx25821_dev_free so removing
- * from the file.
- */
-/*
-static int snd_cx25821_free(struct cx25821_audio_dev *chip)
-{
-	if (chip->irq >= 0)
-		free_irq(chip->irq, chip);
-
-	cx25821_dev_unregister(chip->dev);
-	pci_disable_device(chip->pci);
-
-	return 0;
-}
-*/
-
-/*
- * Component Destructor
- */
-static void snd_cx25821_dev_free(struct snd_card *card)
-{
-	struct cx25821_audio_dev *chip = card->private_data;
-
-	/* snd_cx25821_free(chip); */
-	snd_card_free(chip->card);
-}
-
-/*
  * Alsa Constructor - Component probe
  */
 static int cx25821_audio_initdev(struct cx25821_dev *dev)
@@ -685,7 +656,6 @@ static int cx25821_audio_initdev(struct cx25821_dev *dev)
 	strcpy(card->driver, "cx25821");
 
 	/* Card "creation" */
-	card->private_free = snd_cx25821_dev_free;
 	chip = card->private_data;
 	spin_lock_init(&chip->reg_lock);
 
@@ -729,8 +699,7 @@ static int cx25821_audio_initdev(struct cx25821_dev *dev)
 		goto error;
 	}
 
-	snd_cx25821_cards[devno] = card;
-
+	dev->card = card;
 	devno++;
 	return 0;
 
@@ -742,9 +711,31 @@ error:
 /****************************************************************************
 				LINUX MODULE INIT
  ****************************************************************************/
+
+static int cx25821_alsa_exit_callback(struct device *dev, void *data)
+{
+	struct v4l2_device *v4l2_dev = dev_get_drvdata(dev);
+	struct cx25821_dev *cxdev = get_cx25821(v4l2_dev);
+
+	snd_card_free(cxdev->card);
+	return 0;
+}
+
 static void cx25821_audio_fini(void)
 {
-	snd_card_free(snd_cx25821_cards[0]);
+	struct device_driver *drv = driver_find("cx25821", &pci_bus_type);
+	int ret;
+
+	ret = driver_for_each_device(drv, NULL, NULL, cx25821_alsa_exit_callback);
+}
+
+static int cx25821_alsa_init_callback(struct device *dev, void *data)
+{
+	struct v4l2_device *v4l2_dev = dev_get_drvdata(dev);
+	struct cx25821_dev *cxdev = get_cx25821(v4l2_dev);
+
+	cx25821_audio_initdev(cxdev);
+	return 0;
 }
 
 /*
@@ -756,29 +747,11 @@ static void cx25821_audio_fini(void)
  */
 static int cx25821_alsa_init(void)
 {
-	struct cx25821_dev *dev = NULL;
-	struct list_head *list;
+	struct device_driver *drv = driver_find("cx25821", &pci_bus_type);
 
-	mutex_lock(&cx25821_devlist_mutex);
-	list_for_each(list, &cx25821_devlist) {
-		dev = list_entry(list, struct cx25821_dev, devlist);
-		cx25821_audio_initdev(dev);
-	}
-	mutex_unlock(&cx25821_devlist_mutex);
-
-	if (dev == NULL)
-		pr_info("ERROR ALSA: no cx25821 cards found\n");
-
-	return 0;
+	return driver_for_each_device(drv, NULL, NULL, cx25821_alsa_init_callback);
 
 }
 
 late_initcall(cx25821_alsa_init);
 module_exit(cx25821_audio_fini);
-
-/* ----------------------------------------------------------- */
-/*
- * Local variables:
- * c-basic-offset: 8
- * End:
- */
diff --git a/drivers/media/pci/cx25821/cx25821-audio-upstream.c b/drivers/media/pci/cx25821/cx25821-audio-upstream.c
index ea973202a66c..b9be535e32b8 100644
--- a/drivers/media/pci/cx25821/cx25821-audio-upstream.c
+++ b/drivers/media/pci/cx25821/cx25821-audio-upstream.c
@@ -45,7 +45,7 @@ static int _intr_msk = FLD_AUD_SRC_RISCI1 | FLD_AUD_SRC_OF |
 			FLD_AUD_SRC_SYNC | FLD_AUD_SRC_OPC_ERR;
 
 static int cx25821_sram_channel_setup_upstream_audio(struct cx25821_dev *dev,
-					      struct sram_channel *ch,
+					      const struct sram_channel *ch,
 					      unsigned int bpl, u32 risc)
 {
 	unsigned int i, lines;
@@ -106,7 +106,7 @@ static __le32 *cx25821_risc_field_upstream_audio(struct cx25821_dev *dev,
 						 int fifo_enable)
 {
 	unsigned int line;
-	struct sram_channel *sram_ch =
+	const struct sram_channel *sram_ch =
 		dev->channels[dev->_audio_upstream_channel].sram_channels;
 	int offset = 0;
 
@@ -215,7 +215,7 @@ static void cx25821_free_memory_audio(struct cx25821_dev *dev)
 
 void cx25821_stop_upstream_audio(struct cx25821_dev *dev)
 {
-	struct sram_channel *sram_ch =
+	const struct sram_channel *sram_ch =
 		dev->channels[AUDIO_UPSTREAM_SRAM_CHANNEL_B].sram_channels;
 	u32 tmp = 0;
 
@@ -257,7 +257,7 @@ void cx25821_free_mem_upstream_audio(struct cx25821_dev *dev)
 }
 
 static int cx25821_get_audio_data(struct cx25821_dev *dev,
-			   struct sram_channel *sram_ch)
+			   const struct sram_channel *sram_ch)
 {
 	struct file *myfile;
 	int frame_index_temp = dev->_audioframe_index;
@@ -352,7 +352,7 @@ static void cx25821_audioups_handler(struct work_struct *work)
 }
 
 static int cx25821_openfile_audio(struct cx25821_dev *dev,
-			   struct sram_channel *sram_ch)
+			   const struct sram_channel *sram_ch)
 {
 	struct file *myfile;
 	int i = 0, j = 0;
@@ -433,7 +433,7 @@ static int cx25821_openfile_audio(struct cx25821_dev *dev,
 }
 
 static int cx25821_audio_upstream_buffer_prepare(struct cx25821_dev *dev,
-						 struct sram_channel *sram_ch,
+						 const struct sram_channel *sram_ch,
 						 int bpl)
 {
 	int ret = 0;
@@ -495,7 +495,7 @@ static int cx25821_audio_upstream_irq(struct cx25821_dev *dev, int chan_num,
 {
 	int i = 0;
 	u32 int_msk_tmp;
-	struct sram_channel *channel = dev->channels[chan_num].sram_channels;
+	const struct sram_channel *channel = dev->channels[chan_num].sram_channels;
 	dma_addr_t risc_phys_jump_addr;
 	__le32 *rp;
 
@@ -587,7 +587,7 @@ static irqreturn_t cx25821_upstream_irq_audio(int irq, void *dev_id)
 	struct cx25821_dev *dev = dev_id;
 	u32 audio_status;
 	int handled = 0;
-	struct sram_channel *sram_ch;
+	const struct sram_channel *sram_ch;
 
 	if (!dev)
 		return -1;
@@ -611,7 +611,7 @@ static irqreturn_t cx25821_upstream_irq_audio(int irq, void *dev_id)
 }
 
 static void cx25821_wait_fifo_enable(struct cx25821_dev *dev,
-				     struct sram_channel *sram_ch)
+				     const struct sram_channel *sram_ch)
 {
 	int count = 0;
 	u32 tmp;
@@ -635,7 +635,7 @@ static void cx25821_wait_fifo_enable(struct cx25821_dev *dev,
 }
 
 static int cx25821_start_audio_dma_upstream(struct cx25821_dev *dev,
-					    struct sram_channel *sram_ch)
+					    const struct sram_channel *sram_ch)
 {
 	u32 tmp = 0;
 	int err = 0;
@@ -699,7 +699,7 @@ fail_irq:
 
 int cx25821_audio_upstream_init(struct cx25821_dev *dev, int channel_select)
 {
-	struct sram_channel *sram_ch;
+	const struct sram_channel *sram_ch;
 	int err = 0;
 
 	if (dev->_audio_is_running) {
diff --git a/drivers/media/pci/cx25821/cx25821-cards.c b/drivers/media/pci/cx25821/cx25821-cards.c
index 99988c988095..3b409feb03d8 100644
--- a/drivers/media/pci/cx25821/cx25821-cards.c
+++ b/drivers/media/pci/cx25821/cx25821-cards.c
@@ -26,11 +26,8 @@
 #include <linux/init.h>
 #include <linux/module.h>
 #include <linux/pci.h>
-#include <linux/delay.h>
-#include <media/cx25840.h>
 
 #include "cx25821.h"
-#include "tuner-xc2028.h"
 
 /* board config info */
 
@@ -45,28 +42,8 @@ struct cx25821_board cx25821_boards[] = {
 		.name = "CX25821",
 		.portb = CX25821_RAW,
 		.portc = CX25821_264,
-		.input[0].type = CX25821_VMUX_COMPOSITE,
 	},
 
 };
 
 const unsigned int cx25821_bcount = ARRAY_SIZE(cx25821_boards);
-
-struct cx25821_subid cx25821_subids[] = {
-	{
-		.subvendor = 0x14f1,
-		.subdevice = 0x0920,
-		.card = CX25821_BOARD,
-	},
-};
-
-void cx25821_card_setup(struct cx25821_dev *dev)
-{
-	static u8 eeprom[256];
-
-	if (dev->i2c_bus[0].i2c_rc == 0) {
-		dev->i2c_bus[0].i2c_client.addr = 0xa0 >> 1;
-		tveeprom_read(&dev->i2c_bus[0].i2c_client, eeprom,
-				sizeof(eeprom));
-	}
-}
diff --git a/drivers/media/pci/cx25821/cx25821-core.c b/drivers/media/pci/cx25821/cx25821-core.c
index 1884e2cc35e9..b762c5b2ca10 100644
--- a/drivers/media/pci/cx25821/cx25821-core.c
+++ b/drivers/media/pci/cx25821/cx25821-core.c
@@ -41,14 +41,7 @@ static unsigned int card[] = {[0 ... (CX25821_MAXBOARDS - 1)] = UNSET };
 module_param_array(card, int, NULL, 0444);
 MODULE_PARM_DESC(card, "card type");
 
-static unsigned int cx25821_devcount;
-
-DEFINE_MUTEX(cx25821_devlist_mutex);
-EXPORT_SYMBOL(cx25821_devlist_mutex);
-LIST_HEAD(cx25821_devlist);
-EXPORT_SYMBOL(cx25821_devlist);
-
-struct sram_channel cx25821_sram_channels[] = {
+const struct sram_channel cx25821_sram_channels[] = {
 	[SRAM_CH00] = {
 		.i = SRAM_CH00,
 		.name = "VID A",
@@ -317,20 +310,6 @@ struct sram_channel cx25821_sram_channels[] = {
 };
 EXPORT_SYMBOL(cx25821_sram_channels);
 
-struct sram_channel *channel0 = &cx25821_sram_channels[SRAM_CH00];
-struct sram_channel *channel1 = &cx25821_sram_channels[SRAM_CH01];
-struct sram_channel *channel2 = &cx25821_sram_channels[SRAM_CH02];
-struct sram_channel *channel3 = &cx25821_sram_channels[SRAM_CH03];
-struct sram_channel *channel4 = &cx25821_sram_channels[SRAM_CH04];
-struct sram_channel *channel5 = &cx25821_sram_channels[SRAM_CH05];
-struct sram_channel *channel6 = &cx25821_sram_channels[SRAM_CH06];
-struct sram_channel *channel7 = &cx25821_sram_channels[SRAM_CH07];
-struct sram_channel *channel9 = &cx25821_sram_channels[SRAM_CH09];
-struct sram_channel *channel10 = &cx25821_sram_channels[SRAM_CH10];
-struct sram_channel *channel11 = &cx25821_sram_channels[SRAM_CH11];
-
-struct cx25821_dmaqueue mpegq;
-
 static int cx25821_risc_decode(u32 risc)
 {
 	static const char * const instr[16] = {
@@ -457,7 +436,7 @@ static void cx25821_registers_init(struct cx25821_dev *dev)
 }
 
 int cx25821_sram_channel_setup(struct cx25821_dev *dev,
-			       struct sram_channel *ch,
+			       const struct sram_channel *ch,
 			       unsigned int bpl, u32 risc)
 {
 	unsigned int i, lines;
@@ -523,10 +502,9 @@ int cx25821_sram_channel_setup(struct cx25821_dev *dev,
 
 	return 0;
 }
-EXPORT_SYMBOL(cx25821_sram_channel_setup);
 
 int cx25821_sram_channel_setup_audio(struct cx25821_dev *dev,
-				     struct sram_channel *ch,
+				     const struct sram_channel *ch,
 				     unsigned int bpl, u32 risc)
 {
 	unsigned int i, lines;
@@ -592,7 +570,7 @@ int cx25821_sram_channel_setup_audio(struct cx25821_dev *dev,
 }
 EXPORT_SYMBOL(cx25821_sram_channel_setup_audio);
 
-void cx25821_sram_channel_dump(struct cx25821_dev *dev, struct sram_channel *ch)
+void cx25821_sram_channel_dump(struct cx25821_dev *dev, const struct sram_channel *ch)
 {
 	static char *name[] = {
 		"init risc lo",
@@ -652,10 +630,9 @@ void cx25821_sram_channel_dump(struct cx25821_dev *dev, struct sram_channel *ch)
 	pr_warn("        :   cnt2_reg: 0x%08x\n",
 		cx_read(ch->cnt2_reg));
 }
-EXPORT_SYMBOL(cx25821_sram_channel_dump);
 
 void cx25821_sram_channel_dump_audio(struct cx25821_dev *dev,
-				     struct sram_channel *ch)
+				     const struct sram_channel *ch)
 {
 	static const char * const name[] = {
 		"init risc lo",
@@ -798,12 +775,12 @@ void cx25821_set_pixel_format(struct cx25821_dev *dev, int channel_select,
 	if (channel_select <= 7 && channel_select >= 0) {
 		cx_write(dev->channels[channel_select].sram_channels->pix_frmt,
 				format);
-		dev->channels[channel_select].pixel_formats = format;
 	}
+	dev->channels[channel_select].pixel_formats = format;
 }
 
 static void cx25821_set_vip_mode(struct cx25821_dev *dev,
-				 struct sram_channel *ch)
+				 const struct sram_channel *ch)
 {
 	cx_write(ch->pix_frmt, PIXEL_FRMT_422);
 	cx_write(ch->vip_ctl, PIXEL_ENGINE_VIP1);
@@ -837,12 +814,13 @@ static void cx25821_initialize(struct cx25821_dev *dev)
 		cx25821_sram_channel_setup(dev, dev->channels[i].sram_channels,
 						1440, 0);
 		dev->channels[i].pixel_formats = PIXEL_FRMT_422;
-		dev->channels[i].use_cif_resolution = FALSE;
+		dev->channels[i].use_cif_resolution = 0;
 	}
 
 	/* Probably only affect Downstream */
 	for (i = VID_UPSTREAM_SRAM_CHANNEL_I;
 		i <= VID_UPSTREAM_SRAM_CHANNEL_J; i++) {
+		dev->channels[i].pixel_formats = PIXEL_FRMT_422;
 		cx25821_set_vip_mode(dev, dev->channels[i].sram_channels);
 	}
 
@@ -868,8 +846,7 @@ static void cx25821_dev_checkrevision(struct cx25821_dev *dev)
 {
 	dev->hwrevision = cx_read(RDR_CFG2) & 0xff;
 
-	pr_info("%s(): Hardware revision = 0x%02x\n",
-		__func__, dev->hwrevision);
+	pr_info("Hardware revision = 0x%02x\n", dev->hwrevision);
 }
 
 static void cx25821_iounmap(struct cx25821_dev *dev)
@@ -879,7 +856,6 @@ static void cx25821_iounmap(struct cx25821_dev *dev)
 
 	/* Releasing IO memory */
 	if (dev->lmmio != NULL) {
-		CX25821_INFO("Releasing lmmio.\n");
 		iounmap(dev->lmmio);
 		dev->lmmio = NULL;
 	}
@@ -887,23 +863,14 @@ static void cx25821_iounmap(struct cx25821_dev *dev)
 
 static int cx25821_dev_setup(struct cx25821_dev *dev)
 {
+	static unsigned int cx25821_devcount;
 	int i;
 
-	pr_info("\n***********************************\n");
-	pr_info("cx25821 set up\n");
-	pr_info("***********************************\n\n");
-
 	mutex_init(&dev->lock);
 
-	atomic_inc(&dev->refcount);
-
 	dev->nr = ++cx25821_devcount;
 	sprintf(dev->name, "cx25821[%d]", dev->nr);
 
-	mutex_lock(&cx25821_devlist_mutex);
-	list_add_tail(&dev->devlist, &cx25821_devlist);
-	mutex_unlock(&cx25821_devlist_mutex);
-
 	if (dev->pci->device != 0x8210) {
 		pr_info("%s(): Exiting. Incorrect Hardware device = 0x%02x\n",
 			__func__, dev->pci->device);
@@ -914,8 +881,11 @@ static int cx25821_dev_setup(struct cx25821_dev *dev)
 
 	/* Apply a sensible clock frequency for the PCIe bridge */
 	dev->clk_freq = 28000000;
-	for (i = 0; i < MAX_VID_CHANNEL_NUM; i++)
+	for (i = 0; i < MAX_VID_CHANNEL_NUM; i++) {
+		dev->channels[i].dev = dev;
+		dev->channels[i].id = i;
 		dev->channels[i].sram_channels = &cx25821_sram_channels[i];
+	}
 
 	if (dev->nr > 1)
 		CX25821_INFO("dev->nr > 1!");
@@ -978,63 +948,15 @@ static int cx25821_dev_setup(struct cx25821_dev *dev)
 /*  cx25821_i2c_register(&dev->i2c_bus[1]);
  *  cx25821_i2c_register(&dev->i2c_bus[2]); */
 
-	CX25821_INFO("i2c register! bus->i2c_rc = %d\n",
-			dev->i2c_bus[0].i2c_rc);
-
-	cx25821_card_setup(dev);
-
 	if (medusa_video_init(dev) < 0)
 		CX25821_ERR("%s(): Failed to initialize medusa!\n", __func__);
 
 	cx25821_video_register(dev);
 
-	/* register IOCTL device */
-	dev->ioctl_dev = cx25821_vdev_init(dev, dev->pci,
-			&cx25821_videoioctl_template, "video");
-
-	if (video_register_device
-	    (dev->ioctl_dev, VFL_TYPE_GRABBER, VIDEO_IOCTL_CH) < 0) {
-		cx25821_videoioctl_unregister(dev);
-		pr_err("%s(): Failed to register video adapter for IOCTL, so unregistering videoioctl device\n",
-		       __func__);
-	}
-
 	cx25821_dev_checkrevision(dev);
-	CX25821_INFO("setup done!\n");
-
 	return 0;
 }
 
-void cx25821_start_upstream_video_ch1(struct cx25821_dev *dev,
-				      struct upstream_user_struct *up_data)
-{
-	dev->_isNTSC = !strcmp(dev->vid_stdname, "NTSC") ? 1 : 0;
-
-	dev->tvnorm = !dev->_isNTSC ? V4L2_STD_PAL_BG : V4L2_STD_NTSC_M;
-	medusa_set_videostandard(dev);
-
-	cx25821_vidupstream_init_ch1(dev, dev->channel_select,
-				     dev->pixel_format);
-}
-
-void cx25821_start_upstream_video_ch2(struct cx25821_dev *dev,
-				      struct upstream_user_struct *up_data)
-{
-	dev->_isNTSC_ch2 = !strcmp(dev->vid_stdname_ch2, "NTSC") ? 1 : 0;
-
-	dev->tvnorm = !dev->_isNTSC_ch2 ? V4L2_STD_PAL_BG : V4L2_STD_NTSC_M;
-	medusa_set_videostandard(dev);
-
-	cx25821_vidupstream_init_ch2(dev, dev->channel_select_ch2,
-				     dev->pixel_format_ch2);
-}
-
-void cx25821_start_upstream_audio(struct cx25821_dev *dev,
-				  struct upstream_user_struct *up_data)
-{
-	cx25821_audio_upstream_init(dev, AUDIO_UPSTREAM_SRAM_CHANNEL_B);
-}
-
 void cx25821_dev_unregister(struct cx25821_dev *dev)
 {
 	int i;
@@ -1042,25 +964,16 @@ void cx25821_dev_unregister(struct cx25821_dev *dev)
 	if (!dev->base_io_addr)
 		return;
 
-	cx25821_free_mem_upstream_ch1(dev);
-	cx25821_free_mem_upstream_ch2(dev);
-	cx25821_free_mem_upstream_audio(dev);
-
 	release_mem_region(dev->base_io_addr, pci_resource_len(dev->pci, 0));
 
-	if (!atomic_dec_and_test(&dev->refcount))
-		return;
-
-	for (i = 0; i < VID_CHANNEL_NUM; i++)
-		cx25821_video_unregister(dev, i);
-
-	for (i = VID_UPSTREAM_SRAM_CHANNEL_I;
-	     i <= AUDIO_UPSTREAM_SRAM_CHANNEL_B; i++) {
+	for (i = 0; i < MAX_VID_CHANNEL_NUM - 1; i++) {
+		if (i == SRAM_CH08) /* audio channel */
+			continue;
+		if (i == SRAM_CH09 || i == SRAM_CH10)
+			cx25821_free_mem_upstream(&dev->channels[i]);
 		cx25821_video_unregister(dev, i);
 	}
 
-	cx25821_videoioctl_unregister(dev);
-
 	cx25821_i2c_unregister(&dev->i2c_bus[0]);
 	cx25821_iounmap(dev);
 }
@@ -1385,8 +1298,6 @@ static int cx25821_initdev(struct pci_dev *pci_dev,
 		goto fail_unregister_device;
 	}
 
-	pr_info("Athena pci enable !\n");
-
 	err = cx25821_dev_setup(dev);
 	if (err) {
 		if (err == -EBUSY)
@@ -1445,10 +1356,6 @@ static void cx25821_finidev(struct pci_dev *pci_dev)
 	if (pci_dev->irq)
 		free_irq(pci_dev->irq, dev);
 
-	mutex_lock(&cx25821_devlist_mutex);
-	list_del(&dev->devlist);
-	mutex_unlock(&cx25821_devlist_mutex);
-
 	cx25821_dev_unregister(dev);
 	v4l2_device_unregister(v4l2_dev);
 	kfree(dev);
diff --git a/drivers/media/pci/cx25821/cx25821-gpio.c b/drivers/media/pci/cx25821/cx25821-gpio.c
index 29e43b03c85e..95e8ddf62947 100644
--- a/drivers/media/pci/cx25821/cx25821-gpio.c
+++ b/drivers/media/pci/cx25821/cx25821-gpio.c
@@ -20,6 +20,7 @@
  *  Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  */
 
+#include <linux/module.h>
 #include "cx25821.h"
 
 /********************* GPIO stuffs *********************/
diff --git a/drivers/media/pci/cx25821/cx25821-i2c.c b/drivers/media/pci/cx25821/cx25821-i2c.c
index a8dc945bbe17..dca37c7dba73 100644
--- a/drivers/media/pci/cx25821/cx25821-i2c.c
+++ b/drivers/media/pci/cx25821/cx25821-i2c.c
@@ -23,8 +23,9 @@
 
 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
 
-#include "cx25821.h"
+#include <linux/module.h>
 #include <linux/i2c.h>
+#include "cx25821.h"
 
 static unsigned int i2c_debug;
 module_param(i2c_debug, int, 0644);
diff --git a/drivers/media/pci/cx25821/cx25821-medusa-video.c b/drivers/media/pci/cx25821/cx25821-medusa-video.c
index 6a92e5c70c2a..22fa04415ccc 100644
--- a/drivers/media/pci/cx25821/cx25821-medusa-video.c
+++ b/drivers/media/pci/cx25821/cx25821-medusa-video.c
@@ -94,8 +94,6 @@ static int medusa_initialize_ntsc(struct cx25821_dev *dev)
 	u32 value = 0;
 	u32 tmp = 0;
 
-	mutex_lock(&dev->lock);
-
 	for (i = 0; i < MAX_DECODERS; i++) {
 		/* set video format NTSC-M */
 		value = cx25821_i2c_read(&dev->i2c_bus[0],
@@ -222,8 +220,6 @@ static int medusa_initialize_ntsc(struct cx25821_dev *dev)
 	value |= 0x00080200;
 	ret_val = cx25821_i2c_write(&dev->i2c_bus[0], BYP_AB_CTRL, value);
 
-	mutex_unlock(&dev->lock);
-
 	return ret_val;
 }
 
@@ -265,8 +261,6 @@ static int medusa_initialize_pal(struct cx25821_dev *dev)
 	u32 value = 0;
 	u32 tmp = 0;
 
-	mutex_lock(&dev->lock);
-
 	for (i = 0; i < MAX_DECODERS; i++) {
 		/* set video format PAL-BDGHI */
 		value = cx25821_i2c_read(&dev->i2c_bus[0],
@@ -397,14 +391,12 @@ static int medusa_initialize_pal(struct cx25821_dev *dev)
 	value &= 0xFFF7FDFF;
 	ret_val = cx25821_i2c_write(&dev->i2c_bus[0], BYP_AB_CTRL, value);
 
-	mutex_unlock(&dev->lock);
-
 	return ret_val;
 }
 
 int medusa_set_videostandard(struct cx25821_dev *dev)
 {
-	int status = STATUS_SUCCESS;
+	int status = 0;
 	u32 value = 0, tmp = 0;
 
 	if (dev->tvnorm & V4L2_STD_PAL_BG || dev->tvnorm & V4L2_STD_PAL_DK)
@@ -434,8 +426,6 @@ void medusa_set_resolution(struct cx25821_dev *dev, int width,
 	u32 vscale = 0x0;
 	const int MAX_WIDTH = 720;
 
-	mutex_lock(&dev->lock);
-
 	/* validate the width */
 	if (width > MAX_WIDTH) {
 		pr_info("%s(): width %d > MAX_WIDTH %d ! resetting to MAX_WIDTH\n",
@@ -485,8 +475,6 @@ void medusa_set_resolution(struct cx25821_dev *dev, int width,
 		cx25821_i2c_write(&dev->i2c_bus[0],
 				VSCALE_CTRL + (0x200 * decoder), vscale);
 	}
-
-	mutex_unlock(&dev->lock);
 }
 
 static void medusa_set_decoderduration(struct cx25821_dev *dev, int decoder,
@@ -496,11 +484,8 @@ static void medusa_set_decoderduration(struct cx25821_dev *dev, int decoder,
 	u32 tmp = 0;
 	u32 disp_cnt_reg = DISP_AB_CNT;
 
-	mutex_lock(&dev->lock);
-
 	/* no support */
 	if (decoder < VDEC_A || decoder > VDEC_H) {
-		mutex_unlock(&dev->lock);
 		return;
 	}
 
@@ -535,8 +520,6 @@ static void medusa_set_decoderduration(struct cx25821_dev *dev, int decoder,
 	}
 
 	cx25821_i2c_write(&dev->i2c_bus[0], disp_cnt_reg, fld_cnt);
-
-	mutex_unlock(&dev->lock);
 }
 
 /* Map to Medusa register setting */
@@ -587,10 +570,8 @@ int medusa_set_brightness(struct cx25821_dev *dev, int brightness, int decoder)
 	int value = 0;
 	u32 val = 0, tmp = 0;
 
-	mutex_lock(&dev->lock);
 	if ((brightness > VIDEO_PROCAMP_MAX) ||
 	    (brightness < VIDEO_PROCAMP_MIN)) {
-		mutex_unlock(&dev->lock);
 		return -1;
 	}
 	ret_val = mapM(VIDEO_PROCAMP_MIN, VIDEO_PROCAMP_MAX, brightness,
@@ -601,7 +582,6 @@ int medusa_set_brightness(struct cx25821_dev *dev, int brightness, int decoder)
 	val &= 0xFFFFFF00;
 	ret_val |= cx25821_i2c_write(&dev->i2c_bus[0],
 			VDEC_A_BRITE_CTRL + (0x200 * decoder), val | value);
-	mutex_unlock(&dev->lock);
 	return ret_val;
 }
 
@@ -611,10 +591,7 @@ int medusa_set_contrast(struct cx25821_dev *dev, int contrast, int decoder)
 	int value = 0;
 	u32 val = 0, tmp = 0;
 
-	mutex_lock(&dev->lock);
-
 	if ((contrast > VIDEO_PROCAMP_MAX) || (contrast < VIDEO_PROCAMP_MIN)) {
-		mutex_unlock(&dev->lock);
 		return -1;
 	}
 
@@ -626,7 +603,6 @@ int medusa_set_contrast(struct cx25821_dev *dev, int contrast, int decoder)
 	ret_val |= cx25821_i2c_write(&dev->i2c_bus[0],
 			VDEC_A_CNTRST_CTRL + (0x200 * decoder), val | value);
 
-	mutex_unlock(&dev->lock);
 	return ret_val;
 }
 
@@ -636,10 +612,7 @@ int medusa_set_hue(struct cx25821_dev *dev, int hue, int decoder)
 	int value = 0;
 	u32 val = 0, tmp = 0;
 
-	mutex_lock(&dev->lock);
-
 	if ((hue > VIDEO_PROCAMP_MAX) || (hue < VIDEO_PROCAMP_MIN)) {
-		mutex_unlock(&dev->lock);
 		return -1;
 	}
 
@@ -654,7 +627,6 @@ int medusa_set_hue(struct cx25821_dev *dev, int hue, int decoder)
 	ret_val |= cx25821_i2c_write(&dev->i2c_bus[0],
 			VDEC_A_HUE_CTRL + (0x200 * decoder), val | value);
 
-	mutex_unlock(&dev->lock);
 	return ret_val;
 }
 
@@ -664,11 +636,8 @@ int medusa_set_saturation(struct cx25821_dev *dev, int saturation, int decoder)
 	int value = 0;
 	u32 val = 0, tmp = 0;
 
-	mutex_lock(&dev->lock);
-
 	if ((saturation > VIDEO_PROCAMP_MAX) ||
 	    (saturation < VIDEO_PROCAMP_MIN)) {
-		mutex_unlock(&dev->lock);
 		return -1;
 	}
 
@@ -687,7 +656,6 @@ int medusa_set_saturation(struct cx25821_dev *dev, int saturation, int decoder)
 	ret_val |= cx25821_i2c_write(&dev->i2c_bus[0],
 			VDEC_A_VSAT_CTRL + (0x200 * decoder), val | value);
 
-	mutex_unlock(&dev->lock);
 	return ret_val;
 }
 
@@ -699,8 +667,6 @@ int medusa_video_init(struct cx25821_dev *dev)
 	int ret_val = 0;
 	int i = 0;
 
-	mutex_lock(&dev->lock);
-
 	_num_decoders = dev->_max_num_decoders;
 
 	/* disable Auto source selection on all video decoders */
@@ -719,13 +685,9 @@ int medusa_video_init(struct cx25821_dev *dev)
 	if (ret_val < 0)
 		goto error;
 
-	mutex_unlock(&dev->lock);
-
 	for (i = 0; i < _num_decoders; i++)
 		medusa_set_decoderduration(dev, i, _display_field_cnt[i]);
 
-	mutex_lock(&dev->lock);
-
 	/* Select monitor as DENC A input, power up the DAC */
 	value = cx25821_i2c_read(&dev->i2c_bus[0], DENC_AB_CTRL, &tmp);
 	value &= 0xFF70FF70;
@@ -774,14 +736,8 @@ int medusa_video_init(struct cx25821_dev *dev)
 	if (ret_val < 0)
 		goto error;
 
-
-	mutex_unlock(&dev->lock);
-
 	ret_val = medusa_set_videostandard(dev);
 
-	return ret_val;
-
 error:
-	mutex_unlock(&dev->lock);
 	return ret_val;
 }
diff --git a/drivers/media/pci/cx25821/cx25821-video-upstream-ch2.c b/drivers/media/pci/cx25821/cx25821-video-upstream-ch2.c
deleted file mode 100644
index cf2723c7197f..000000000000
--- a/drivers/media/pci/cx25821/cx25821-video-upstream-ch2.c
+++ /dev/null
@@ -1,800 +0,0 @@
-/*
- *  Driver for the Conexant CX25821 PCIe bridge
- *
- *  Copyright (C) 2009 Conexant Systems Inc.
- *  Authors  <hiep.huynh@conexant.com>, <shu.lin@conexant.com>
- *
- *  This program is free software; you can redistribute it and/or modify
- *  it under the terms of the GNU General Public License as published by
- *  the Free Software Foundation; either version 2 of the License, or
- *  (at your option) any later version.
- *
- *  This program is distributed in the hope that it will be useful,
- *  but WITHOUT ANY WARRANTY; without even the implied warranty of
- *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- *
- *  GNU General Public License for more details.
- *
- *  You should have received a copy of the GNU General Public License
- *  along with this program; if not, write to the Free Software
- *  Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
- */
-
-#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
-
-#include "cx25821-video.h"
-#include "cx25821-video-upstream-ch2.h"
-
-#include <linux/fs.h>
-#include <linux/errno.h>
-#include <linux/kernel.h>
-#include <linux/init.h>
-#include <linux/module.h>
-#include <linux/syscalls.h>
-#include <linux/file.h>
-#include <linux/fcntl.h>
-#include <linux/slab.h>
-#include <linux/uaccess.h>
-
-MODULE_DESCRIPTION("v4l2 driver module for cx25821 based TV cards");
-MODULE_AUTHOR("Hiep Huynh <hiep.huynh@conexant.com>");
-MODULE_LICENSE("GPL");
-
-static int _intr_msk = FLD_VID_SRC_RISC1 | FLD_VID_SRC_UF | FLD_VID_SRC_SYNC |
-			FLD_VID_SRC_OPC_ERR;
-
-static __le32 *cx25821_update_riscprogram_ch2(struct cx25821_dev *dev,
-					      __le32 *rp, unsigned int offset,
-					      unsigned int bpl, u32 sync_line,
-					      unsigned int lines,
-					      int fifo_enable, int field_type)
-{
-	unsigned int line, i;
-	int dist_betwn_starts = bpl * 2;
-
-	*(rp++) = cpu_to_le32(RISC_RESYNC | sync_line);
-
-	if (USE_RISC_NOOP_VIDEO) {
-		for (i = 0; i < NUM_NO_OPS; i++)
-			*(rp++) = cpu_to_le32(RISC_NOOP);
-	}
-
-	/* scan lines */
-	for (line = 0; line < lines; line++) {
-		*(rp++) = cpu_to_le32(RISC_READ | RISC_SOL | RISC_EOL | bpl);
-		*(rp++) = cpu_to_le32(dev->_data_buf_phys_addr_ch2 + offset);
-		*(rp++) = cpu_to_le32(0);	/* bits 63-32 */
-
-		if ((lines <= NTSC_FIELD_HEIGHT) ||
-		    (line < (NTSC_FIELD_HEIGHT - 1)) || !(dev->_isNTSC_ch2)) {
-			offset += dist_betwn_starts;
-		}
-	}
-
-	return rp;
-}
-
-static __le32 *cx25821_risc_field_upstream_ch2(struct cx25821_dev *dev,
-					       __le32 *rp,
-					       dma_addr_t databuf_phys_addr,
-					       unsigned int offset,
-					       u32 sync_line, unsigned int bpl,
-					       unsigned int lines,
-					       int fifo_enable, int field_type)
-{
-	unsigned int line, i;
-	struct sram_channel *sram_ch =
-		dev->channels[dev->_channel2_upstream_select].sram_channels;
-	int dist_betwn_starts = bpl * 2;
-
-	/* sync instruction */
-	if (sync_line != NO_SYNC_LINE)
-		*(rp++) = cpu_to_le32(RISC_RESYNC | sync_line);
-
-	if (USE_RISC_NOOP_VIDEO) {
-		for (i = 0; i < NUM_NO_OPS; i++)
-			*(rp++) = cpu_to_le32(RISC_NOOP);
-	}
-
-	/* scan lines */
-	for (line = 0; line < lines; line++) {
-		*(rp++) = cpu_to_le32(RISC_READ | RISC_SOL | RISC_EOL | bpl);
-		*(rp++) = cpu_to_le32(databuf_phys_addr + offset);
-		*(rp++) = cpu_to_le32(0);	/* bits 63-32 */
-
-		if ((lines <= NTSC_FIELD_HEIGHT) ||
-		    (line < (NTSC_FIELD_HEIGHT - 1)) || !(dev->_isNTSC_ch2)) {
-			offset += dist_betwn_starts;
-		}
-
-	       /*
-		 check if we need to enable the FIFO after the first 4 lines
-		  For the upstream video channel, the risc engine will enable
-		  the FIFO.
-	       */
-		if (fifo_enable && line == 3) {
-			*(rp++) = RISC_WRITECR;
-			*(rp++) = sram_ch->dma_ctl;
-			*(rp++) = FLD_VID_FIFO_EN;
-			*(rp++) = 0x00000001;
-		}
-	}
-
-	return rp;
-}
-
-static int cx25821_risc_buffer_upstream_ch2(struct cx25821_dev *dev,
-					    struct pci_dev *pci,
-					    unsigned int top_offset,
-					    unsigned int bpl,
-					    unsigned int lines)
-{
-	__le32 *rp;
-	int fifo_enable = 0;
-	int singlefield_lines = lines >> 1; /*get line count for single field */
-	int odd_num_lines = singlefield_lines;
-	int frame = 0;
-	int frame_size = 0;
-	int databuf_offset = 0;
-	int risc_program_size = 0;
-	int risc_flag = RISC_CNT_RESET;
-	unsigned int bottom_offset = bpl;
-	dma_addr_t risc_phys_jump_addr;
-
-	if (dev->_isNTSC_ch2) {
-		odd_num_lines = singlefield_lines + 1;
-		risc_program_size = FRAME1_VID_PROG_SIZE;
-		if (bpl == Y411_LINE_SZ)
-			frame_size = FRAME_SIZE_NTSC_Y411;
-		else
-			frame_size = FRAME_SIZE_NTSC_Y422;
-	} else {
-		risc_program_size = PAL_VID_PROG_SIZE;
-		if (bpl == Y411_LINE_SZ)
-			frame_size = FRAME_SIZE_PAL_Y411;
-		else
-			frame_size = FRAME_SIZE_PAL_Y422;
-	}
-
-	/* Virtual address of Risc buffer program */
-	rp = dev->_dma_virt_addr_ch2;
-
-	for (frame = 0; frame < NUM_FRAMES; frame++) {
-		databuf_offset = frame_size * frame;
-
-		if (UNSET != top_offset) {
-			fifo_enable = (frame == 0) ? FIFO_ENABLE : FIFO_DISABLE;
-			rp = cx25821_risc_field_upstream_ch2(dev, rp,
-				dev->_data_buf_phys_addr_ch2 + databuf_offset,
-				top_offset, 0, bpl, odd_num_lines, fifo_enable,
-				ODD_FIELD);
-		}
-
-		fifo_enable = FIFO_DISABLE;
-
-		/* Even field */
-		rp = cx25821_risc_field_upstream_ch2(dev, rp,
-				dev->_data_buf_phys_addr_ch2 + databuf_offset,
-				bottom_offset, 0x200, bpl, singlefield_lines,
-				fifo_enable, EVEN_FIELD);
-
-		if (frame == 0) {
-			risc_flag = RISC_CNT_RESET;
-			risc_phys_jump_addr = dev->_dma_phys_start_addr_ch2 +
-					risc_program_size;
-		} else {
-			risc_flag = RISC_CNT_INC;
-			risc_phys_jump_addr = dev->_dma_phys_start_addr_ch2;
-		}
-
-	       /*
-		* Loop to 2ndFrameRISC or to Start of
-		* Risc program & generate IRQ
-		*/
-		*(rp++) = cpu_to_le32(RISC_JUMP | RISC_IRQ1 | risc_flag);
-		*(rp++) = cpu_to_le32(risc_phys_jump_addr);
-		*(rp++) = cpu_to_le32(0);
-	}
-
-	return 0;
-}
-
-void cx25821_stop_upstream_video_ch2(struct cx25821_dev *dev)
-{
-	struct sram_channel *sram_ch =
-		dev->channels[VID_UPSTREAM_SRAM_CHANNEL_J].sram_channels;
-	u32 tmp = 0;
-
-	if (!dev->_is_running_ch2) {
-		pr_info("No video file is currently running so return!\n");
-		return;
-	}
-	/* Disable RISC interrupts */
-	tmp = cx_read(sram_ch->int_msk);
-	cx_write(sram_ch->int_msk, tmp & ~_intr_msk);
-
-	/* Turn OFF risc and fifo */
-	tmp = cx_read(sram_ch->dma_ctl);
-	cx_write(sram_ch->dma_ctl, tmp & ~(FLD_VID_FIFO_EN | FLD_VID_RISC_EN));
-
-	/* Clear data buffer memory */
-	if (dev->_data_buf_virt_addr_ch2)
-		memset(dev->_data_buf_virt_addr_ch2, 0,
-		       dev->_data_buf_size_ch2);
-
-	dev->_is_running_ch2 = 0;
-	dev->_is_first_frame_ch2 = 0;
-	dev->_frame_count_ch2 = 0;
-	dev->_file_status_ch2 = END_OF_FILE;
-
-	kfree(dev->_irq_queues_ch2);
-	dev->_irq_queues_ch2 = NULL;
-
-	kfree(dev->_filename_ch2);
-
-	tmp = cx_read(VID_CH_MODE_SEL);
-	cx_write(VID_CH_MODE_SEL, tmp & 0xFFFFFE00);
-}
-
-void cx25821_free_mem_upstream_ch2(struct cx25821_dev *dev)
-{
-	if (dev->_is_running_ch2)
-		cx25821_stop_upstream_video_ch2(dev);
-
-	if (dev->_dma_virt_addr_ch2) {
-		pci_free_consistent(dev->pci, dev->_risc_size_ch2,
-				    dev->_dma_virt_addr_ch2,
-				    dev->_dma_phys_addr_ch2);
-		dev->_dma_virt_addr_ch2 = NULL;
-	}
-
-	if (dev->_data_buf_virt_addr_ch2) {
-		pci_free_consistent(dev->pci, dev->_data_buf_size_ch2,
-				    dev->_data_buf_virt_addr_ch2,
-				    dev->_data_buf_phys_addr_ch2);
-		dev->_data_buf_virt_addr_ch2 = NULL;
-	}
-}
-
-static int cx25821_get_frame_ch2(struct cx25821_dev *dev,
-				 struct sram_channel *sram_ch)
-{
-	struct file *myfile;
-	int frame_index_temp = dev->_frame_index_ch2;
-	int i = 0;
-	int line_size = (dev->_pixel_format_ch2 == PIXEL_FRMT_411) ?
-		Y411_LINE_SZ : Y422_LINE_SZ;
-	int frame_size = 0;
-	int frame_offset = 0;
-	ssize_t vfs_read_retval = 0;
-	char mybuf[line_size];
-	loff_t file_offset;
-	loff_t pos;
-	mm_segment_t old_fs;
-
-	if (dev->_file_status_ch2 == END_OF_FILE)
-		return 0;
-
-	if (dev->_isNTSC_ch2) {
-		frame_size = (line_size == Y411_LINE_SZ) ?
-			FRAME_SIZE_NTSC_Y411 : FRAME_SIZE_NTSC_Y422;
-	} else {
-		frame_size = (line_size == Y411_LINE_SZ) ?
-			FRAME_SIZE_PAL_Y411 : FRAME_SIZE_PAL_Y422;
-	}
-
-	frame_offset = (frame_index_temp > 0) ? frame_size : 0;
-	file_offset = dev->_frame_count_ch2 * frame_size;
-
-	myfile = filp_open(dev->_filename_ch2, O_RDONLY | O_LARGEFILE, 0);
-	if (IS_ERR(myfile)) {
-		const int open_errno = -PTR_ERR(myfile);
-		pr_err("%s(): ERROR opening file(%s) with errno = %d!\n",
-		       __func__, dev->_filename_ch2, open_errno);
-		return PTR_ERR(myfile);
-	} else {
-		if (!(myfile->f_op)) {
-			pr_err("%s(): File has no file operations registered!\n",
-			       __func__);
-			filp_close(myfile, NULL);
-			return -EIO;
-		}
-
-		if (!myfile->f_op->read) {
-			pr_err("%s(): File has no READ operations registered!\n",
-			       __func__);
-			filp_close(myfile, NULL);
-			return -EIO;
-		}
-
-		pos = myfile->f_pos;
-		old_fs = get_fs();
-		set_fs(KERNEL_DS);
-
-		for (i = 0; i < dev->_lines_count_ch2; i++) {
-			pos = file_offset;
-
-			vfs_read_retval = vfs_read(myfile, mybuf, line_size,
-					&pos);
-
-			if (vfs_read_retval > 0 && vfs_read_retval == line_size
-			    && dev->_data_buf_virt_addr_ch2 != NULL) {
-				memcpy((void *)(dev->_data_buf_virt_addr_ch2 +
-						frame_offset / 4), mybuf,
-						vfs_read_retval);
-			}
-
-			file_offset += vfs_read_retval;
-			frame_offset += vfs_read_retval;
-
-			if (vfs_read_retval < line_size) {
-				pr_info("Done: exit %s() since no more bytes to read from Video file\n",
-					__func__);
-				break;
-			}
-		}
-
-		if (i > 0)
-			dev->_frame_count_ch2++;
-
-		dev->_file_status_ch2 = (vfs_read_retval == line_size) ?
-			IN_PROGRESS : END_OF_FILE;
-
-		set_fs(old_fs);
-		filp_close(myfile, NULL);
-	}
-
-	return 0;
-}
-
-static void cx25821_vidups_handler_ch2(struct work_struct *work)
-{
-	struct cx25821_dev *dev = container_of(work, struct cx25821_dev,
-			_irq_work_entry_ch2);
-
-	if (!dev) {
-		pr_err("ERROR %s(): since container_of(work_struct) FAILED!\n",
-		       __func__);
-		return;
-	}
-
-	cx25821_get_frame_ch2(dev, dev->channels[dev->
-			_channel2_upstream_select].sram_channels);
-}
-
-static int cx25821_openfile_ch2(struct cx25821_dev *dev,
-				struct sram_channel *sram_ch)
-{
-	struct file *myfile;
-	int i = 0, j = 0;
-	int line_size = (dev->_pixel_format_ch2 == PIXEL_FRMT_411) ?
-		Y411_LINE_SZ : Y422_LINE_SZ;
-	ssize_t vfs_read_retval = 0;
-	char mybuf[line_size];
-	loff_t pos;
-	loff_t offset = (unsigned long)0;
-	mm_segment_t old_fs;
-
-	myfile = filp_open(dev->_filename_ch2, O_RDONLY | O_LARGEFILE, 0);
-
-	if (IS_ERR(myfile)) {
-		const int open_errno = -PTR_ERR(myfile);
-		pr_err("%s(): ERROR opening file(%s) with errno = %d!\n",
-		       __func__, dev->_filename_ch2, open_errno);
-		return PTR_ERR(myfile);
-	} else {
-		if (!(myfile->f_op)) {
-			pr_err("%s(): File has no file operations registered!\n",
-			       __func__);
-			filp_close(myfile, NULL);
-			return -EIO;
-		}
-
-		if (!myfile->f_op->read) {
-			pr_err("%s(): File has no READ operations registered!  Returning\n",
-			       __func__);
-			filp_close(myfile, NULL);
-			return -EIO;
-		}
-
-		pos = myfile->f_pos;
-		old_fs = get_fs();
-		set_fs(KERNEL_DS);
-
-		for (j = 0; j < NUM_FRAMES; j++) {
-			for (i = 0; i < dev->_lines_count_ch2; i++) {
-				pos = offset;
-
-				vfs_read_retval = vfs_read(myfile, mybuf,
-						line_size, &pos);
-
-				if (vfs_read_retval > 0 &&
-				    vfs_read_retval == line_size &&
-				    dev->_data_buf_virt_addr_ch2 != NULL) {
-					memcpy((void *)(dev->
-							_data_buf_virt_addr_ch2
-							+ offset / 4), mybuf,
-							vfs_read_retval);
-				}
-
-				offset += vfs_read_retval;
-
-				if (vfs_read_retval < line_size) {
-					pr_info("Done: exit %s() since no more bytes to read from Video file\n",
-						__func__);
-					break;
-				}
-			}
-
-			if (i > 0)
-				dev->_frame_count_ch2++;
-
-			if (vfs_read_retval < line_size)
-				break;
-		}
-
-		dev->_file_status_ch2 = (vfs_read_retval == line_size) ?
-			IN_PROGRESS : END_OF_FILE;
-
-		set_fs(old_fs);
-		myfile->f_pos = 0;
-		filp_close(myfile, NULL);
-	}
-
-	return 0;
-}
-
-static int cx25821_upstream_buffer_prepare_ch2(struct cx25821_dev *dev,
-					       struct sram_channel *sram_ch,
-					       int bpl)
-{
-	int ret = 0;
-	dma_addr_t dma_addr;
-	dma_addr_t data_dma_addr;
-
-	if (dev->_dma_virt_addr_ch2 != NULL) {
-		pci_free_consistent(dev->pci, dev->upstream_riscbuf_size_ch2,
-				    dev->_dma_virt_addr_ch2,
-				    dev->_dma_phys_addr_ch2);
-	}
-
-	dev->_dma_virt_addr_ch2 = pci_alloc_consistent(dev->pci,
-			dev->upstream_riscbuf_size_ch2, &dma_addr);
-	dev->_dma_virt_start_addr_ch2 = dev->_dma_virt_addr_ch2;
-	dev->_dma_phys_start_addr_ch2 = dma_addr;
-	dev->_dma_phys_addr_ch2 = dma_addr;
-	dev->_risc_size_ch2 = dev->upstream_riscbuf_size_ch2;
-
-	if (!dev->_dma_virt_addr_ch2) {
-		pr_err("FAILED to allocate memory for Risc buffer! Returning\n");
-		return -ENOMEM;
-	}
-
-	/* Iniitize at this address until n bytes to 0 */
-	memset(dev->_dma_virt_addr_ch2, 0, dev->_risc_size_ch2);
-
-	if (dev->_data_buf_virt_addr_ch2 != NULL) {
-		pci_free_consistent(dev->pci, dev->upstream_databuf_size_ch2,
-				    dev->_data_buf_virt_addr_ch2,
-				    dev->_data_buf_phys_addr_ch2);
-	}
-	/* For Video Data buffer allocation */
-	dev->_data_buf_virt_addr_ch2 = pci_alloc_consistent(dev->pci,
-			dev->upstream_databuf_size_ch2, &data_dma_addr);
-	dev->_data_buf_phys_addr_ch2 = data_dma_addr;
-	dev->_data_buf_size_ch2 = dev->upstream_databuf_size_ch2;
-
-	if (!dev->_data_buf_virt_addr_ch2) {
-		pr_err("FAILED to allocate memory for data buffer! Returning\n");
-		return -ENOMEM;
-	}
-
-	/* Initialize at this address until n bytes to 0 */
-	memset(dev->_data_buf_virt_addr_ch2, 0, dev->_data_buf_size_ch2);
-
-	ret = cx25821_openfile_ch2(dev, sram_ch);
-	if (ret < 0)
-		return ret;
-
-	/* Creating RISC programs */
-	ret = cx25821_risc_buffer_upstream_ch2(dev, dev->pci, 0, bpl,
-						dev->_lines_count_ch2);
-	if (ret < 0) {
-		pr_info("Failed creating Video Upstream Risc programs!\n");
-		goto error;
-	}
-
-	return 0;
-
-error:
-	return ret;
-}
-
-static int cx25821_video_upstream_irq_ch2(struct cx25821_dev *dev,
-					  int chan_num,
-					  u32 status)
-{
-	u32 int_msk_tmp;
-	struct sram_channel *channel = dev->channels[chan_num].sram_channels;
-	int singlefield_lines = NTSC_FIELD_HEIGHT;
-	int line_size_in_bytes = Y422_LINE_SZ;
-	int odd_risc_prog_size = 0;
-	dma_addr_t risc_phys_jump_addr;
-	__le32 *rp;
-
-	if (status & FLD_VID_SRC_RISC1) {
-		/* We should only process one program per call */
-		u32 prog_cnt = cx_read(channel->gpcnt);
-
-		/*
-		 *  Since we've identified our IRQ, clear our bits from the
-		 *  interrupt mask and interrupt status registers
-		 */
-		int_msk_tmp = cx_read(channel->int_msk);
-		cx_write(channel->int_msk, int_msk_tmp & ~_intr_msk);
-		cx_write(channel->int_stat, _intr_msk);
-
-		spin_lock(&dev->slock);
-
-		dev->_frame_index_ch2 = prog_cnt;
-
-		queue_work(dev->_irq_queues_ch2, &dev->_irq_work_entry_ch2);
-
-		if (dev->_is_first_frame_ch2) {
-			dev->_is_first_frame_ch2 = 0;
-
-			if (dev->_isNTSC_ch2) {
-				singlefield_lines += 1;
-				odd_risc_prog_size = ODD_FLD_NTSC_PROG_SIZE;
-			} else {
-				singlefield_lines = PAL_FIELD_HEIGHT;
-				odd_risc_prog_size = ODD_FLD_PAL_PROG_SIZE;
-			}
-
-			if (dev->_dma_virt_start_addr_ch2 != NULL) {
-				if (dev->_pixel_format_ch2 == PIXEL_FRMT_411)
-					line_size_in_bytes = Y411_LINE_SZ;
-				else
-					line_size_in_bytes = Y422_LINE_SZ;
-				risc_phys_jump_addr =
-					dev->_dma_phys_start_addr_ch2 +
-					odd_risc_prog_size;
-
-				rp = cx25821_update_riscprogram_ch2(dev,
-						dev->_dma_virt_start_addr_ch2,
-						TOP_OFFSET, line_size_in_bytes,
-						0x0, singlefield_lines,
-						FIFO_DISABLE, ODD_FIELD);
-
-			       /* Jump to Even Risc program of 1st Frame */
-				*(rp++) = cpu_to_le32(RISC_JUMP);
-				*(rp++) = cpu_to_le32(risc_phys_jump_addr);
-				*(rp++) = cpu_to_le32(0);
-			}
-		}
-
-		spin_unlock(&dev->slock);
-	}
-
-	if (dev->_file_status_ch2 == END_OF_FILE) {
-		pr_info("EOF Channel 2 Framecount = %d\n",
-			dev->_frame_count_ch2);
-		return -1;
-	}
-	/* ElSE, set the interrupt mask register, re-enable irq. */
-	int_msk_tmp = cx_read(channel->int_msk);
-	cx_write(channel->int_msk, int_msk_tmp |= _intr_msk);
-
-	return 0;
-}
-
-static irqreturn_t cx25821_upstream_irq_ch2(int irq, void *dev_id)
-{
-	struct cx25821_dev *dev = dev_id;
-	u32 vid_status;
-	int handled = 0;
-	int channel_num = 0;
-	struct sram_channel *sram_ch;
-
-	if (!dev)
-		return -1;
-
-	channel_num = VID_UPSTREAM_SRAM_CHANNEL_J;
-	sram_ch = dev->channels[channel_num].sram_channels;
-
-	vid_status = cx_read(sram_ch->int_stat);
-
-	/* Only deal with our interrupt */
-	if (vid_status)
-		handled = cx25821_video_upstream_irq_ch2(dev, channel_num,
-				vid_status);
-
-	if (handled < 0)
-		cx25821_stop_upstream_video_ch2(dev);
-	else
-		handled += handled;
-
-	return IRQ_RETVAL(handled);
-}
-
-static void cx25821_set_pixelengine_ch2(struct cx25821_dev *dev,
-					struct sram_channel *ch, int pix_format)
-{
-	int width = WIDTH_D1;
-	int height = dev->_lines_count_ch2;
-	int num_lines, odd_num_lines;
-	u32 value;
-	int vip_mode = PIXEL_ENGINE_VIP1;
-
-	value = ((pix_format & 0x3) << 12) | (vip_mode & 0x7);
-	value &= 0xFFFFFFEF;
-	value |= dev->_isNTSC_ch2 ? 0 : 0x10;
-	cx_write(ch->vid_fmt_ctl, value);
-
-	/*
-	 *  set number of active pixels in each line. Default is 720
-	 * pixels in both NTSC and PAL format
-	 */
-	cx_write(ch->vid_active_ctl1, width);
-
-	num_lines = (height / 2) & 0x3FF;
-	odd_num_lines = num_lines;
-
-	if (dev->_isNTSC_ch2)
-		odd_num_lines += 1;
-
-	value = (num_lines << 16) | odd_num_lines;
-
-	/* set number of active lines in field 0 (top) and field 1 (bottom) */
-	cx_write(ch->vid_active_ctl2, value);
-
-	cx_write(ch->vid_cdt_size, VID_CDT_SIZE >> 3);
-}
-
-static int cx25821_start_video_dma_upstream_ch2(struct cx25821_dev *dev,
-						struct sram_channel *sram_ch)
-{
-	u32 tmp = 0;
-	int err = 0;
-
-	/*
-	 *  656/VIP SRC Upstream Channel I & J and 7 - Host Bus Interface
-	 * for channel A-C
-	 */
-	tmp = cx_read(VID_CH_MODE_SEL);
-	cx_write(VID_CH_MODE_SEL, tmp | 0x1B0001FF);
-
-	/*
-	 *  Set the physical start address of the RISC program in the initial
-	 *  program counter(IPC) member of the cmds.
-	 */
-	cx_write(sram_ch->cmds_start + 0, dev->_dma_phys_addr_ch2);
-	cx_write(sram_ch->cmds_start + 4, 0); /* Risc IPC High 64 bits 63-32 */
-
-	/* reset counter */
-	cx_write(sram_ch->gpcnt_ctl, 3);
-
-	/* Clear our bits from the interrupt status register. */
-	cx_write(sram_ch->int_stat, _intr_msk);
-
-	/* Set the interrupt mask register, enable irq. */
-	cx_set(PCI_INT_MSK, cx_read(PCI_INT_MSK) | (1 << sram_ch->irq_bit));
-	tmp = cx_read(sram_ch->int_msk);
-	cx_write(sram_ch->int_msk, tmp |= _intr_msk);
-
-	err = request_irq(dev->pci->irq, cx25821_upstream_irq_ch2,
-			IRQF_SHARED, dev->name, dev);
-	if (err < 0) {
-		pr_err("%s: can't get upstream IRQ %d\n",
-		       dev->name, dev->pci->irq);
-		goto fail_irq;
-	}
-	/* Start the DMA  engine */
-	tmp = cx_read(sram_ch->dma_ctl);
-	cx_set(sram_ch->dma_ctl, tmp | FLD_VID_RISC_EN);
-
-	dev->_is_running_ch2 = 1;
-	dev->_is_first_frame_ch2 = 1;
-
-	return 0;
-
-fail_irq:
-	cx25821_dev_unregister(dev);
-	return err;
-}
-
-int cx25821_vidupstream_init_ch2(struct cx25821_dev *dev, int channel_select,
-				 int pixel_format)
-{
-	struct sram_channel *sram_ch;
-	u32 tmp;
-	int err = 0;
-	int data_frame_size = 0;
-	int risc_buffer_size = 0;
-
-	if (dev->_is_running_ch2) {
-		pr_info("Video Channel is still running so return!\n");
-		return 0;
-	}
-
-	dev->_channel2_upstream_select = channel_select;
-	sram_ch = dev->channels[channel_select].sram_channels;
-
-	INIT_WORK(&dev->_irq_work_entry_ch2, cx25821_vidups_handler_ch2);
-	dev->_irq_queues_ch2 =
-	    create_singlethread_workqueue("cx25821_workqueue2");
-
-	if (!dev->_irq_queues_ch2) {
-		pr_err("create_singlethread_workqueue() for Video FAILED!\n");
-		return -ENOMEM;
-	}
-	/*
-	 * 656/VIP SRC Upstream Channel I & J and 7 -
-	 * Host Bus Interface for channel A-C
-	 */
-	tmp = cx_read(VID_CH_MODE_SEL);
-	cx_write(VID_CH_MODE_SEL, tmp | 0x1B0001FF);
-
-	dev->_is_running_ch2 = 0;
-	dev->_frame_count_ch2 = 0;
-	dev->_file_status_ch2 = RESET_STATUS;
-	dev->_lines_count_ch2 = dev->_isNTSC_ch2 ? 480 : 576;
-	dev->_pixel_format_ch2 = pixel_format;
-	dev->_line_size_ch2 = (dev->_pixel_format_ch2 == PIXEL_FRMT_422) ?
-		(WIDTH_D1 * 2) : (WIDTH_D1 * 3) / 2;
-	data_frame_size = dev->_isNTSC_ch2 ? NTSC_DATA_BUF_SZ : PAL_DATA_BUF_SZ;
-	risc_buffer_size = dev->_isNTSC_ch2 ?
-		NTSC_RISC_BUF_SIZE : PAL_RISC_BUF_SIZE;
-
-	if (dev->input_filename_ch2)
-		dev->_filename_ch2 = kstrdup(dev->input_filename_ch2,
-								GFP_KERNEL);
-	else
-		dev->_filename_ch2 = kstrdup(dev->_defaultname_ch2,
-								GFP_KERNEL);
-
-	if (!dev->_filename_ch2) {
-		err = -ENOENT;
-		goto error;
-	}
-
-	/* Default if filename is empty string */
-	if (strcmp(dev->_filename_ch2, "") == 0) {
-		if (dev->_isNTSC_ch2) {
-			dev->_filename_ch2 = (dev->_pixel_format_ch2 ==
-				PIXEL_FRMT_411) ? "/root/vid411.yuv" :
-				"/root/vidtest.yuv";
-		} else {
-			dev->_filename_ch2 = (dev->_pixel_format_ch2 ==
-				PIXEL_FRMT_411) ? "/root/pal411.yuv" :
-				"/root/pal422.yuv";
-		}
-	}
-
-	err = cx25821_sram_channel_setup_upstream(dev, sram_ch,
-						dev->_line_size_ch2, 0);
-
-	/* setup fifo + format */
-	cx25821_set_pixelengine_ch2(dev, sram_ch, dev->_pixel_format_ch2);
-
-	dev->upstream_riscbuf_size_ch2 = risc_buffer_size * 2;
-	dev->upstream_databuf_size_ch2 = data_frame_size * 2;
-
-	/* Allocating buffers and prepare RISC program */
-	err = cx25821_upstream_buffer_prepare_ch2(dev, sram_ch,
-						dev->_line_size_ch2);
-	if (err < 0) {
-		pr_err("%s: Failed to set up Video upstream buffers!\n",
-		       dev->name);
-		goto error;
-	}
-
-	cx25821_start_video_dma_upstream_ch2(dev, sram_ch);
-
-	return 0;
-
-error:
-	cx25821_dev_unregister(dev);
-
-	return err;
-}
diff --git a/drivers/media/pci/cx25821/cx25821-video-upstream-ch2.h b/drivers/media/pci/cx25821/cx25821-video-upstream-ch2.h
deleted file mode 100644
index d42dab59b663..000000000000
--- a/drivers/media/pci/cx25821/cx25821-video-upstream-ch2.h
+++ /dev/null
@@ -1,138 +0,0 @@
-/*
- *  Driver for the Conexant CX25821 PCIe bridge
- *
- *  Copyright (C) 2009 Conexant Systems Inc.
- *  Authors  <hiep.huynh@conexant.com>, <shu.lin@conexant.com>
- *
- *  This program is free software; you can redistribute it and/or modify
- *  it under the terms of the GNU General Public License as published by
- *  the Free Software Foundation; either version 2 of the License, or
- *  (at your option) any later version.
- *
- *  This program is distributed in the hope that it will be useful,
- *  but WITHOUT ANY WARRANTY; without even the implied warranty of
- *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- *
- *  GNU General Public License for more details.
- *
- *  You should have received a copy of the GNU General Public License
- *  along with this program; if not, write to the Free Software
- *  Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
- */
-
-#include <linux/mutex.h>
-#include <linux/workqueue.h>
-
-#define OPEN_FILE_1           0
-#define NUM_PROGS             8
-#define NUM_FRAMES            2
-#define ODD_FIELD             0
-#define EVEN_FIELD            1
-#define TOP_OFFSET            0
-#define FIFO_DISABLE          0
-#define FIFO_ENABLE           1
-#define TEST_FRAMES           5
-#define END_OF_FILE           0
-#define IN_PROGRESS           1
-#define RESET_STATUS          -1
-#define NUM_NO_OPS            5
-
-/* PAL and NTSC line sizes and number of lines. */
-#define WIDTH_D1              720
-#define NTSC_LINES_PER_FRAME  480
-#define PAL_LINES_PER_FRAME   576
-#define PAL_LINE_SZ           1440
-#define Y422_LINE_SZ          1440
-#define Y411_LINE_SZ          1080
-#define NTSC_FIELD_HEIGHT     240
-#define NTSC_ODD_FLD_LINES    241
-#define PAL_FIELD_HEIGHT      288
-
-#define FRAME_SIZE_NTSC_Y422    (NTSC_LINES_PER_FRAME * Y422_LINE_SZ)
-#define FRAME_SIZE_NTSC_Y411    (NTSC_LINES_PER_FRAME * Y411_LINE_SZ)
-#define FRAME_SIZE_PAL_Y422     (PAL_LINES_PER_FRAME * Y422_LINE_SZ)
-#define FRAME_SIZE_PAL_Y411     (PAL_LINES_PER_FRAME * Y411_LINE_SZ)
-
-#define NTSC_DATA_BUF_SZ        (Y422_LINE_SZ * NTSC_LINES_PER_FRAME)
-#define PAL_DATA_BUF_SZ         (Y422_LINE_SZ * PAL_LINES_PER_FRAME)
-
-#define RISC_WRITECR_INSTRUCTION_SIZE   16
-#define RISC_SYNC_INSTRUCTION_SIZE      4
-#define JUMP_INSTRUCTION_SIZE           12
-#define MAXSIZE_NO_OPS                  36
-#define DWORD_SIZE                      4
-
-#define USE_RISC_NOOP_VIDEO   1
-
-#ifdef USE_RISC_NOOP_VIDEO
-#define PAL_US_VID_PROG_SIZE						\
-	(PAL_FIELD_HEIGHT * 3 * DWORD_SIZE +				\
-	 RISC_WRITECR_INSTRUCTION_SIZE + RISC_SYNC_INSTRUCTION_SIZE +	\
-	 NUM_NO_OPS * DWORD_SIZE)
-
-#define PAL_RISC_BUF_SIZE         (2 * PAL_US_VID_PROG_SIZE)
-
-#define PAL_VID_PROG_SIZE						\
-	((PAL_FIELD_HEIGHT * 2) * 3 * DWORD_SIZE +			\
-	 2 * RISC_SYNC_INSTRUCTION_SIZE + RISC_WRITECR_INSTRUCTION_SIZE + \
-	 JUMP_INSTRUCTION_SIZE + 2 * NUM_NO_OPS * DWORD_SIZE)
-
-#define ODD_FLD_PAL_PROG_SIZE						\
-	(PAL_FIELD_HEIGHT * 3 * DWORD_SIZE +				\
-	 RISC_SYNC_INSTRUCTION_SIZE + RISC_WRITECR_INSTRUCTION_SIZE +	\
-	 NUM_NO_OPS * DWORD_SIZE)
-
-#define NTSC_US_VID_PROG_SIZE						\
-	((NTSC_ODD_FLD_LINES + 1) * 3 * DWORD_SIZE +			\
-	 RISC_WRITECR_INSTRUCTION_SIZE + JUMP_INSTRUCTION_SIZE +	\
-	 NUM_NO_OPS * DWORD_SIZE)
-
-#define NTSC_RISC_BUF_SIZE						\
-	(2 * (RISC_SYNC_INSTRUCTION_SIZE + NTSC_US_VID_PROG_SIZE))
-
-#define FRAME1_VID_PROG_SIZE						\
-	((NTSC_ODD_FLD_LINES + NTSC_FIELD_HEIGHT) *			\
-	 3 * DWORD_SIZE + 2 * RISC_SYNC_INSTRUCTION_SIZE +		\
-	 RISC_WRITECR_INSTRUCTION_SIZE + JUMP_INSTRUCTION_SIZE +	\
-	 2 * NUM_NO_OPS * DWORD_SIZE)
-
-#define ODD_FLD_NTSC_PROG_SIZE						\
-	(NTSC_ODD_FLD_LINES * 3 * DWORD_SIZE +				\
-	 RISC_SYNC_INSTRUCTION_SIZE + RISC_WRITECR_INSTRUCTION_SIZE +	\
-	 NUM_NO_OPS * DWORD_SIZE)
-#endif
-
-#ifndef USE_RISC_NOOP_VIDEO
-#define PAL_US_VID_PROG_SIZE						\
-	((PAL_FIELD_HEIGHT + 1) * 3 * DWORD_SIZE +			\
-	 RISC_WRITECR_INSTRUCTION_SIZE)
-
-#define PAL_RISC_BUF_SIZE						\
-	(2 * (RISC_SYNC_INSTRUCTION_SIZE + PAL_US_VID_PROG_SIZE))
-
-#define PAL_VID_PROG_SIZE						\
-	((PAL_FIELD_HEIGHT * 2) * 3 * DWORD_SIZE +			\
-	 2 * RISC_SYNC_INSTRUCTION_SIZE + RISC_WRITECR_INSTRUCTION_SIZE + \
-	 JUMP_INSTRUCTION_SIZE)
-
-#define ODD_FLD_PAL_PROG_SIZE						\
-	(PAL_FIELD_HEIGHT * 3 * DWORD_SIZE +				\
-	 RISC_SYNC_INSTRUCTION_SIZE + RISC_WRITECR_INSTRUCTION_SIZE)
-
-#define ODD_FLD_NTSC_PROG_SIZE						\
-	(NTSC_ODD_FLD_LINES * 3 * DWORD_SIZE +				\
-	 RISC_SYNC_INSTRUCTION_SIZE + RISC_WRITECR_INSTRUCTION_SIZE)
-
-#define NTSC_US_VID_PROG_SIZE						\
-	((NTSC_ODD_FLD_LINES + 1) * 3 * DWORD_SIZE +			\
-	 RISC_WRITECR_INSTRUCTION_SIZE + JUMP_INSTRUCTION_SIZE)
-
-#define NTSC_RISC_BUF_SIZE						\
-	(2 * (RISC_SYNC_INSTRUCTION_SIZE + NTSC_US_VID_PROG_SIZE))
-
-#define FRAME1_VID_PROG_SIZE						\
-	((NTSC_ODD_FLD_LINES + NTSC_FIELD_HEIGHT) *			\
-	 3 * DWORD_SIZE + 2 * RISC_SYNC_INSTRUCTION_SIZE +		\
-	 RISC_WRITECR_INSTRUCTION_SIZE + JUMP_INSTRUCTION_SIZE)
-
-#endif
diff --git a/drivers/media/pci/cx25821/cx25821-video-upstream.c b/drivers/media/pci/cx25821/cx25821-video-upstream.c
index 7fc97110d973..88ffef410c50 100644
--- a/drivers/media/pci/cx25821/cx25821-video-upstream.c
+++ b/drivers/media/pci/cx25821/cx25821-video-upstream.c
@@ -25,16 +25,11 @@
 #include "cx25821-video.h"
 #include "cx25821-video-upstream.h"
 
-#include <linux/fs.h>
 #include <linux/errno.h>
 #include <linux/kernel.h>
 #include <linux/init.h>
 #include <linux/module.h>
-#include <linux/syscalls.h>
-#include <linux/file.h>
-#include <linux/fcntl.h>
 #include <linux/slab.h>
-#include <linux/uaccess.h>
 
 MODULE_DESCRIPTION("v4l2 driver module for cx25821 based TV cards");
 MODULE_AUTHOR("Hiep Huynh <hiep.huynh@conexant.com>");
@@ -44,7 +39,7 @@ static int _intr_msk = FLD_VID_SRC_RISC1 | FLD_VID_SRC_UF | FLD_VID_SRC_SYNC |
 			FLD_VID_SRC_OPC_ERR;
 
 int cx25821_sram_channel_setup_upstream(struct cx25821_dev *dev,
-					struct sram_channel *ch,
+					const struct sram_channel *ch,
 					unsigned int bpl, u32 risc)
 {
 	unsigned int i, lines;
@@ -97,12 +92,13 @@ int cx25821_sram_channel_setup_upstream(struct cx25821_dev *dev,
 	return 0;
 }
 
-static __le32 *cx25821_update_riscprogram(struct cx25821_dev *dev,
+static __le32 *cx25821_update_riscprogram(struct cx25821_channel *chan,
 					  __le32 *rp, unsigned int offset,
 					  unsigned int bpl, u32 sync_line,
 					  unsigned int lines, int fifo_enable,
 					  int field_type)
 {
+	struct cx25821_video_out_data *out = chan->out;
 	unsigned int line, i;
 	int dist_betwn_starts = bpl * 2;
 
@@ -116,11 +112,11 @@ static __le32 *cx25821_update_riscprogram(struct cx25821_dev *dev,
 	/* scan lines */
 	for (line = 0; line < lines; line++) {
 		*(rp++) = cpu_to_le32(RISC_READ | RISC_SOL | RISC_EOL | bpl);
-		*(rp++) = cpu_to_le32(dev->_data_buf_phys_addr + offset);
+		*(rp++) = cpu_to_le32(out->_data_buf_phys_addr + offset);
 		*(rp++) = cpu_to_le32(0);	/* bits 63-32 */
 
 		if ((lines <= NTSC_FIELD_HEIGHT)
-		    || (line < (NTSC_FIELD_HEIGHT - 1)) || !(dev->_isNTSC)) {
+		    || (line < (NTSC_FIELD_HEIGHT - 1)) || !(out->is_60hz)) {
 			offset += dist_betwn_starts;
 		}
 	}
@@ -128,15 +124,15 @@ static __le32 *cx25821_update_riscprogram(struct cx25821_dev *dev,
 	return rp;
 }
 
-static __le32 *cx25821_risc_field_upstream(struct cx25821_dev *dev, __le32 * rp,
+static __le32 *cx25821_risc_field_upstream(struct cx25821_channel *chan, __le32 *rp,
 					   dma_addr_t databuf_phys_addr,
 					   unsigned int offset, u32 sync_line,
 					   unsigned int bpl, unsigned int lines,
 					   int fifo_enable, int field_type)
 {
+	struct cx25821_video_out_data *out = chan->out;
 	unsigned int line, i;
-	struct sram_channel *sram_ch =
-		dev->channels[dev->_channel_upstream_select].sram_channels;
+	const struct sram_channel *sram_ch = chan->sram_channels;
 	int dist_betwn_starts = bpl * 2;
 
 	/* sync instruction */
@@ -155,7 +151,7 @@ static __le32 *cx25821_risc_field_upstream(struct cx25821_dev *dev, __le32 * rp,
 		*(rp++) = cpu_to_le32(0);	/* bits 63-32 */
 
 		if ((lines <= NTSC_FIELD_HEIGHT)
-		    || (line < (NTSC_FIELD_HEIGHT - 1)) || !(dev->_isNTSC))
+		    || (line < (NTSC_FIELD_HEIGHT - 1)) || !(out->is_60hz))
 			/* to skip the other field line */
 			offset += dist_betwn_starts;
 
@@ -173,11 +169,12 @@ static __le32 *cx25821_risc_field_upstream(struct cx25821_dev *dev, __le32 * rp,
 	return rp;
 }
 
-static int cx25821_risc_buffer_upstream(struct cx25821_dev *dev,
+static int cx25821_risc_buffer_upstream(struct cx25821_channel *chan,
 					struct pci_dev *pci,
 					unsigned int top_offset,
 					unsigned int bpl, unsigned int lines)
 {
+	struct cx25821_video_out_data *out = chan->out;
 	__le32 *rp;
 	int fifo_enable = 0;
 	/* get line count for single field */
@@ -191,7 +188,7 @@ static int cx25821_risc_buffer_upstream(struct cx25821_dev *dev,
 	unsigned int bottom_offset = bpl;
 	dma_addr_t risc_phys_jump_addr;
 
-	if (dev->_isNTSC) {
+	if (out->is_60hz) {
 		odd_num_lines = singlefield_lines + 1;
 		risc_program_size = FRAME1_VID_PROG_SIZE;
 		frame_size = (bpl == Y411_LINE_SZ) ?
@@ -203,15 +200,15 @@ static int cx25821_risc_buffer_upstream(struct cx25821_dev *dev,
 	}
 
 	/* Virtual address of Risc buffer program */
-	rp = dev->_dma_virt_addr;
+	rp = out->_dma_virt_addr;
 
 	for (frame = 0; frame < NUM_FRAMES; frame++) {
 		databuf_offset = frame_size * frame;
 
 		if (UNSET != top_offset) {
 			fifo_enable = (frame == 0) ? FIFO_ENABLE : FIFO_DISABLE;
-			rp = cx25821_risc_field_upstream(dev, rp,
-					dev->_data_buf_phys_addr +
+			rp = cx25821_risc_field_upstream(chan, rp,
+					out->_data_buf_phys_addr +
 					databuf_offset, top_offset, 0, bpl,
 					odd_num_lines, fifo_enable, ODD_FIELD);
 		}
@@ -219,18 +216,18 @@ static int cx25821_risc_buffer_upstream(struct cx25821_dev *dev,
 		fifo_enable = FIFO_DISABLE;
 
 		/* Even Field */
-		rp = cx25821_risc_field_upstream(dev, rp,
-						 dev->_data_buf_phys_addr +
+		rp = cx25821_risc_field_upstream(chan, rp,
+						 out->_data_buf_phys_addr +
 						 databuf_offset, bottom_offset,
 						 0x200, bpl, singlefield_lines,
 						 fifo_enable, EVEN_FIELD);
 
 		if (frame == 0) {
 			risc_flag = RISC_CNT_RESET;
-			risc_phys_jump_addr = dev->_dma_phys_start_addr +
+			risc_phys_jump_addr = out->_dma_phys_start_addr +
 				risc_program_size;
 		} else {
-			risc_phys_jump_addr = dev->_dma_phys_start_addr;
+			risc_phys_jump_addr = out->_dma_phys_start_addr;
 			risc_flag = RISC_CNT_INC;
 		}
 
@@ -245,16 +242,21 @@ static int cx25821_risc_buffer_upstream(struct cx25821_dev *dev,
 	return 0;
 }
 
-void cx25821_stop_upstream_video_ch1(struct cx25821_dev *dev)
+void cx25821_stop_upstream_video(struct cx25821_channel *chan)
 {
-	struct sram_channel *sram_ch =
-		dev->channels[VID_UPSTREAM_SRAM_CHANNEL_I].sram_channels;
+	struct cx25821_video_out_data *out = chan->out;
+	struct cx25821_dev *dev = chan->dev;
+	const struct sram_channel *sram_ch = chan->sram_channels;
 	u32 tmp = 0;
 
-	if (!dev->_is_running) {
+	if (!out->_is_running) {
 		pr_info("No video file is currently running so return!\n");
 		return;
 	}
+
+	/* Set the interrupt mask register, disable irq. */
+	cx_set(PCI_INT_MSK, cx_read(PCI_INT_MSK) & ~(1 << sram_ch->irq_bit));
+
 	/* Disable RISC interrupts */
 	tmp = cx_read(sram_ch->int_msk);
 	cx_write(sram_ch->int_msk, tmp & ~_intr_msk);
@@ -263,283 +265,133 @@ void cx25821_stop_upstream_video_ch1(struct cx25821_dev *dev)
 	tmp = cx_read(sram_ch->dma_ctl);
 	cx_write(sram_ch->dma_ctl, tmp & ~(FLD_VID_FIFO_EN | FLD_VID_RISC_EN));
 
-	/* Clear data buffer memory */
-	if (dev->_data_buf_virt_addr)
-		memset(dev->_data_buf_virt_addr, 0, dev->_data_buf_size);
+	free_irq(dev->pci->irq, chan);
 
-	dev->_is_running = 0;
-	dev->_is_first_frame = 0;
-	dev->_frame_count = 0;
-	dev->_file_status = END_OF_FILE;
-
-	kfree(dev->_irq_queues);
-	dev->_irq_queues = NULL;
+	/* Clear data buffer memory */
+	if (out->_data_buf_virt_addr)
+		memset(out->_data_buf_virt_addr, 0, out->_data_buf_size);
 
-	kfree(dev->_filename);
+	out->_is_running = 0;
+	out->_is_first_frame = 0;
+	out->_frame_count = 0;
+	out->_file_status = END_OF_FILE;
 
 	tmp = cx_read(VID_CH_MODE_SEL);
 	cx_write(VID_CH_MODE_SEL, tmp & 0xFFFFFE00);
 }
 
-void cx25821_free_mem_upstream_ch1(struct cx25821_dev *dev)
+void cx25821_free_mem_upstream(struct cx25821_channel *chan)
 {
-	if (dev->_is_running)
-		cx25821_stop_upstream_video_ch1(dev);
+	struct cx25821_video_out_data *out = chan->out;
+	struct cx25821_dev *dev = chan->dev;
 
-	if (dev->_dma_virt_addr) {
-		pci_free_consistent(dev->pci, dev->_risc_size,
-				    dev->_dma_virt_addr, dev->_dma_phys_addr);
-		dev->_dma_virt_addr = NULL;
+	if (out->_is_running)
+		cx25821_stop_upstream_video(chan);
+
+	if (out->_dma_virt_addr) {
+		pci_free_consistent(dev->pci, out->_risc_size,
+				    out->_dma_virt_addr, out->_dma_phys_addr);
+		out->_dma_virt_addr = NULL;
 	}
 
-	if (dev->_data_buf_virt_addr) {
-		pci_free_consistent(dev->pci, dev->_data_buf_size,
-				    dev->_data_buf_virt_addr,
-				    dev->_data_buf_phys_addr);
-		dev->_data_buf_virt_addr = NULL;
+	if (out->_data_buf_virt_addr) {
+		pci_free_consistent(dev->pci, out->_data_buf_size,
+				    out->_data_buf_virt_addr,
+				    out->_data_buf_phys_addr);
+		out->_data_buf_virt_addr = NULL;
 	}
 }
 
-static int cx25821_get_frame(struct cx25821_dev *dev,
-			     struct sram_channel *sram_ch)
+int cx25821_write_frame(struct cx25821_channel *chan,
+		const char __user *data, size_t count)
 {
-	struct file *myfile;
-	int frame_index_temp = dev->_frame_index;
-	int i = 0;
-	int line_size = (dev->_pixel_format == PIXEL_FRMT_411) ?
+	struct cx25821_video_out_data *out = chan->out;
+	int line_size = (out->_pixel_format == PIXEL_FRMT_411) ?
 		Y411_LINE_SZ : Y422_LINE_SZ;
 	int frame_size = 0;
 	int frame_offset = 0;
-	ssize_t vfs_read_retval = 0;
-	char mybuf[line_size];
-	loff_t file_offset;
-	loff_t pos;
-	mm_segment_t old_fs;
-
-	if (dev->_file_status == END_OF_FILE)
-		return 0;
+	int curpos = out->curpos;
 
-	if (dev->_isNTSC)
+	if (out->is_60hz)
 		frame_size = (line_size == Y411_LINE_SZ) ?
 			FRAME_SIZE_NTSC_Y411 : FRAME_SIZE_NTSC_Y422;
 	else
 		frame_size = (line_size == Y411_LINE_SZ) ?
 			FRAME_SIZE_PAL_Y411 : FRAME_SIZE_PAL_Y422;
 
-	frame_offset = (frame_index_temp > 0) ? frame_size : 0;
-	file_offset = dev->_frame_count * frame_size;
-
-	myfile = filp_open(dev->_filename, O_RDONLY | O_LARGEFILE, 0);
-
-	if (IS_ERR(myfile)) {
-		const int open_errno = -PTR_ERR(myfile);
-		pr_err("%s(): ERROR opening file(%s) with errno = %d!\n",
-		       __func__, dev->_filename, open_errno);
-		return PTR_ERR(myfile);
-	} else {
-		if (!(myfile->f_op)) {
-			pr_err("%s(): File has no file operations registered!\n",
-			       __func__);
-			filp_close(myfile, NULL);
-			return -EIO;
-		}
-
-		if (!myfile->f_op->read) {
-			pr_err("%s(): File has no READ operations registered!\n",
-			       __func__);
-			filp_close(myfile, NULL);
-			return -EIO;
-		}
-
-		pos = myfile->f_pos;
-		old_fs = get_fs();
-		set_fs(KERNEL_DS);
-
-		for (i = 0; i < dev->_lines_count; i++) {
-			pos = file_offset;
-
-			vfs_read_retval = vfs_read(myfile, mybuf, line_size,
-					&pos);
-
-			if (vfs_read_retval > 0 && vfs_read_retval == line_size
-			    && dev->_data_buf_virt_addr != NULL) {
-				memcpy((void *)(dev->_data_buf_virt_addr +
-						frame_offset / 4), mybuf,
-				       vfs_read_retval);
-			}
-
-			file_offset += vfs_read_retval;
-			frame_offset += vfs_read_retval;
-
-			if (vfs_read_retval < line_size) {
-				pr_info("Done: exit %s() since no more bytes to read from Video file\n",
-					__func__);
-				break;
-			}
-		}
-
-		if (i > 0)
-			dev->_frame_count++;
-
-		dev->_file_status = (vfs_read_retval == line_size) ?
-			IN_PROGRESS : END_OF_FILE;
-
-		set_fs(old_fs);
-		filp_close(myfile, NULL);
-	}
-
-	return 0;
-}
-
-static void cx25821_vidups_handler(struct work_struct *work)
-{
-	struct cx25821_dev *dev = container_of(work, struct cx25821_dev,
-			_irq_work_entry);
-
-	if (!dev) {
-		pr_err("ERROR %s(): since container_of(work_struct) FAILED!\n",
-		       __func__);
-		return;
+	if (curpos == 0) {
+		out->cur_frame_index = out->_frame_index;
+		if (wait_event_interruptible(out->waitq, out->cur_frame_index != out->_frame_index))
+			return -EINTR;
+		out->cur_frame_index = out->_frame_index;
 	}
 
-	cx25821_get_frame(dev, dev->channels[dev->_channel_upstream_select].
-			sram_channels);
-}
-
-static int cx25821_openfile(struct cx25821_dev *dev,
-			    struct sram_channel *sram_ch)
-{
-	struct file *myfile;
-	int i = 0, j = 0;
-	int line_size = (dev->_pixel_format == PIXEL_FRMT_411) ?
-		Y411_LINE_SZ : Y422_LINE_SZ;
-	ssize_t vfs_read_retval = 0;
-	char mybuf[line_size];
-	loff_t pos;
-	loff_t offset = (unsigned long)0;
-	mm_segment_t old_fs;
-
-	myfile = filp_open(dev->_filename, O_RDONLY | O_LARGEFILE, 0);
-
-	if (IS_ERR(myfile)) {
-		const int open_errno = -PTR_ERR(myfile);
-		pr_err("%s(): ERROR opening file(%s) with errno = %d!\n",
-		       __func__, dev->_filename, open_errno);
-		return PTR_ERR(myfile);
-	} else {
-		if (!(myfile->f_op)) {
-			pr_err("%s(): File has no file operations registered!\n",
-			       __func__);
-			filp_close(myfile, NULL);
-			return -EIO;
-		}
-
-		if (!myfile->f_op->read) {
-			pr_err("%s(): File has no READ operations registered!  Returning\n",
-			       __func__);
-			filp_close(myfile, NULL);
-			return -EIO;
-		}
-
-		pos = myfile->f_pos;
-		old_fs = get_fs();
-		set_fs(KERNEL_DS);
-
-		for (j = 0; j < NUM_FRAMES; j++) {
-			for (i = 0; i < dev->_lines_count; i++) {
-				pos = offset;
-
-				vfs_read_retval = vfs_read(myfile, mybuf,
-						line_size, &pos);
-
-				if (vfs_read_retval > 0
-				    && vfs_read_retval == line_size
-				    && dev->_data_buf_virt_addr != NULL) {
-					memcpy((void *)(dev->
-							_data_buf_virt_addr +
-							offset / 4), mybuf,
-					       vfs_read_retval);
-				}
-
-				offset += vfs_read_retval;
-
-				if (vfs_read_retval < line_size) {
-					pr_info("Done: exit %s() since no more bytes to read from Video file\n",
-						__func__);
-					break;
-				}
-			}
+	frame_offset = out->cur_frame_index ? frame_size : 0;
 
-			if (i > 0)
-				dev->_frame_count++;
-
-			if (vfs_read_retval < line_size)
-				break;
-		}
-
-		dev->_file_status = (vfs_read_retval == line_size) ?
-			IN_PROGRESS : END_OF_FILE;
-
-		set_fs(old_fs);
-		myfile->f_pos = 0;
-		filp_close(myfile, NULL);
+	if (frame_size - curpos < count)
+		count = frame_size - curpos;
+	memcpy((char *)out->_data_buf_virt_addr + frame_offset + curpos,
+			data, count);
+	curpos += count;
+	if (curpos == frame_size) {
+		out->_frame_count++;
+		curpos = 0;
 	}
+	out->curpos = curpos;
 
-	return 0;
+	return count;
 }
 
-static int cx25821_upstream_buffer_prepare(struct cx25821_dev *dev,
-					   struct sram_channel *sram_ch,
+static int cx25821_upstream_buffer_prepare(struct cx25821_channel *chan,
+					   const struct sram_channel *sram_ch,
 					   int bpl)
 {
+	struct cx25821_video_out_data *out = chan->out;
+	struct cx25821_dev *dev = chan->dev;
 	int ret = 0;
 	dma_addr_t dma_addr;
 	dma_addr_t data_dma_addr;
 
-	if (dev->_dma_virt_addr != NULL)
-		pci_free_consistent(dev->pci, dev->upstream_riscbuf_size,
-				dev->_dma_virt_addr, dev->_dma_phys_addr);
+	if (out->_dma_virt_addr != NULL)
+		pci_free_consistent(dev->pci, out->upstream_riscbuf_size,
+				out->_dma_virt_addr, out->_dma_phys_addr);
 
-	dev->_dma_virt_addr = pci_alloc_consistent(dev->pci,
-			dev->upstream_riscbuf_size, &dma_addr);
-	dev->_dma_virt_start_addr = dev->_dma_virt_addr;
-	dev->_dma_phys_start_addr = dma_addr;
-	dev->_dma_phys_addr = dma_addr;
-	dev->_risc_size = dev->upstream_riscbuf_size;
+	out->_dma_virt_addr = pci_alloc_consistent(dev->pci,
+			out->upstream_riscbuf_size, &dma_addr);
+	out->_dma_virt_start_addr = out->_dma_virt_addr;
+	out->_dma_phys_start_addr = dma_addr;
+	out->_dma_phys_addr = dma_addr;
+	out->_risc_size = out->upstream_riscbuf_size;
 
-	if (!dev->_dma_virt_addr) {
+	if (!out->_dma_virt_addr) {
 		pr_err("FAILED to allocate memory for Risc buffer! Returning\n");
 		return -ENOMEM;
 	}
 
 	/* Clear memory at address */
-	memset(dev->_dma_virt_addr, 0, dev->_risc_size);
+	memset(out->_dma_virt_addr, 0, out->_risc_size);
 
-	if (dev->_data_buf_virt_addr != NULL)
-		pci_free_consistent(dev->pci, dev->upstream_databuf_size,
-				dev->_data_buf_virt_addr,
-				dev->_data_buf_phys_addr);
+	if (out->_data_buf_virt_addr != NULL)
+		pci_free_consistent(dev->pci, out->upstream_databuf_size,
+				out->_data_buf_virt_addr,
+				out->_data_buf_phys_addr);
 	/* For Video Data buffer allocation */
-	dev->_data_buf_virt_addr = pci_alloc_consistent(dev->pci,
-			dev->upstream_databuf_size, &data_dma_addr);
-	dev->_data_buf_phys_addr = data_dma_addr;
-	dev->_data_buf_size = dev->upstream_databuf_size;
+	out->_data_buf_virt_addr = pci_alloc_consistent(dev->pci,
+			out->upstream_databuf_size, &data_dma_addr);
+	out->_data_buf_phys_addr = data_dma_addr;
+	out->_data_buf_size = out->upstream_databuf_size;
 
-	if (!dev->_data_buf_virt_addr) {
+	if (!out->_data_buf_virt_addr) {
 		pr_err("FAILED to allocate memory for data buffer! Returning\n");
 		return -ENOMEM;
 	}
 
 	/* Clear memory at address */
-	memset(dev->_data_buf_virt_addr, 0, dev->_data_buf_size);
-
-	ret = cx25821_openfile(dev, sram_ch);
-	if (ret < 0)
-		return ret;
+	memset(out->_data_buf_virt_addr, 0, out->_data_buf_size);
 
 	/* Create RISC programs */
-	ret = cx25821_risc_buffer_upstream(dev, dev->pci, 0, bpl,
-			dev->_lines_count);
+	ret = cx25821_risc_buffer_upstream(chan, dev->pci, 0, bpl,
+			out->_lines_count);
 	if (ret < 0) {
 		pr_info("Failed creating Video Upstream Risc programs!\n");
 		goto error;
@@ -551,11 +403,12 @@ error:
 	return ret;
 }
 
-static int cx25821_video_upstream_irq(struct cx25821_dev *dev, int chan_num,
-				      u32 status)
+static int cx25821_video_upstream_irq(struct cx25821_channel *chan, u32 status)
 {
+	struct cx25821_video_out_data *out = chan->out;
+	struct cx25821_dev *dev = chan->dev;
 	u32 int_msk_tmp;
-	struct sram_channel *channel = dev->channels[chan_num].sram_channels;
+	const struct sram_channel *channel = chan->sram_channels;
 	int singlefield_lines = NTSC_FIELD_HEIGHT;
 	int line_size_in_bytes = Y422_LINE_SZ;
 	int odd_risc_prog_size = 0;
@@ -572,16 +425,16 @@ static int cx25821_video_upstream_irq(struct cx25821_dev *dev, int chan_num,
 		cx_write(channel->int_msk, int_msk_tmp & ~_intr_msk);
 		cx_write(channel->int_stat, _intr_msk);
 
-		spin_lock(&dev->slock);
+		wake_up(&out->waitq);
 
-		dev->_frame_index = prog_cnt;
+		spin_lock(&dev->slock);
 
-		queue_work(dev->_irq_queues, &dev->_irq_work_entry);
+		out->_frame_index = prog_cnt;
 
-		if (dev->_is_first_frame) {
-			dev->_is_first_frame = 0;
+		if (out->_is_first_frame) {
+			out->_is_first_frame = 0;
 
-			if (dev->_isNTSC) {
+			if (out->is_60hz) {
 				singlefield_lines += 1;
 				odd_risc_prog_size = ODD_FLD_NTSC_PROG_SIZE;
 			} else {
@@ -589,17 +442,17 @@ static int cx25821_video_upstream_irq(struct cx25821_dev *dev, int chan_num,
 				odd_risc_prog_size = ODD_FLD_PAL_PROG_SIZE;
 			}
 
-			if (dev->_dma_virt_start_addr != NULL) {
+			if (out->_dma_virt_start_addr != NULL) {
 				line_size_in_bytes =
-				    (dev->_pixel_format ==
+				    (out->_pixel_format ==
 				     PIXEL_FRMT_411) ? Y411_LINE_SZ :
 				    Y422_LINE_SZ;
 				risc_phys_jump_addr =
-				    dev->_dma_phys_start_addr +
+				    out->_dma_phys_start_addr +
 				    odd_risc_prog_size;
 
-				rp = cx25821_update_riscprogram(dev,
-					dev->_dma_virt_start_addr, TOP_OFFSET,
+				rp = cx25821_update_riscprogram(chan,
+					out->_dma_virt_start_addr, TOP_OFFSET,
 					line_size_in_bytes, 0x0,
 					singlefield_lines, FIFO_DISABLE,
 					ODD_FIELD);
@@ -626,8 +479,8 @@ static int cx25821_video_upstream_irq(struct cx25821_dev *dev, int chan_num,
 			       __func__);
 	}
 
-	if (dev->_file_status == END_OF_FILE) {
-		pr_err("EOF Channel 1 Framecount = %d\n", dev->_frame_count);
+	if (out->_file_status == END_OF_FILE) {
+		pr_err("EOF Channel 1 Framecount = %d\n", out->_frame_count);
 		return -1;
 	}
 	/* ElSE, set the interrupt mask register, re-enable irq. */
@@ -639,47 +492,41 @@ static int cx25821_video_upstream_irq(struct cx25821_dev *dev, int chan_num,
 
 static irqreturn_t cx25821_upstream_irq(int irq, void *dev_id)
 {
-	struct cx25821_dev *dev = dev_id;
+	struct cx25821_channel *chan = dev_id;
+	struct cx25821_dev *dev = chan->dev;
 	u32 vid_status;
 	int handled = 0;
-	int channel_num = 0;
-	struct sram_channel *sram_ch;
+	const struct sram_channel *sram_ch;
 
 	if (!dev)
 		return -1;
 
-	channel_num = VID_UPSTREAM_SRAM_CHANNEL_I;
-
-	sram_ch = dev->channels[channel_num].sram_channels;
+	sram_ch = chan->sram_channels;
 
 	vid_status = cx_read(sram_ch->int_stat);
 
 	/* Only deal with our interrupt */
 	if (vid_status)
-		handled = cx25821_video_upstream_irq(dev, channel_num,
-				vid_status);
-
-	if (handled < 0)
-		cx25821_stop_upstream_video_ch1(dev);
-	else
-		handled += handled;
+		handled = cx25821_video_upstream_irq(chan, vid_status);
 
 	return IRQ_RETVAL(handled);
 }
 
-static void cx25821_set_pixelengine(struct cx25821_dev *dev,
-				    struct sram_channel *ch,
+static void cx25821_set_pixelengine(struct cx25821_channel *chan,
+				    const struct sram_channel *ch,
 				    int pix_format)
 {
+	struct cx25821_video_out_data *out = chan->out;
+	struct cx25821_dev *dev = chan->dev;
 	int width = WIDTH_D1;
-	int height = dev->_lines_count;
+	int height = out->_lines_count;
 	int num_lines, odd_num_lines;
 	u32 value;
 	int vip_mode = OUTPUT_FRMT_656;
 
 	value = ((pix_format & 0x3) << 12) | (vip_mode & 0x7);
 	value &= 0xFFFFFFEF;
-	value |= dev->_isNTSC ? 0 : 0x10;
+	value |= out->is_60hz ? 0 : 0x10;
 	cx_write(ch->vid_fmt_ctl, value);
 
 	/* set number of active pixels in each line.
@@ -689,7 +536,7 @@ static void cx25821_set_pixelengine(struct cx25821_dev *dev,
 	num_lines = (height / 2) & 0x3FF;
 	odd_num_lines = num_lines;
 
-	if (dev->_isNTSC)
+	if (out->is_60hz)
 		odd_num_lines += 1;
 
 	value = (num_lines << 16) | odd_num_lines;
@@ -700,9 +547,11 @@ static void cx25821_set_pixelengine(struct cx25821_dev *dev,
 	cx_write(ch->vid_cdt_size, VID_CDT_SIZE >> 3);
 }
 
-static int cx25821_start_video_dma_upstream(struct cx25821_dev *dev,
-					    struct sram_channel *sram_ch)
+static int cx25821_start_video_dma_upstream(struct cx25821_channel *chan,
+					    const struct sram_channel *sram_ch)
 {
+	struct cx25821_video_out_data *out = chan->out;
+	struct cx25821_dev *dev = chan->dev;
 	u32 tmp = 0;
 	int err = 0;
 
@@ -715,7 +564,7 @@ static int cx25821_start_video_dma_upstream(struct cx25821_dev *dev,
 	/* Set the physical start address of the RISC program in the initial
 	 * program counter(IPC) member of the cmds.
 	 */
-	cx_write(sram_ch->cmds_start + 0, dev->_dma_phys_addr);
+	cx_write(sram_ch->cmds_start + 0, out->_dma_phys_addr);
 	/* Risc IPC High 64 bits 63-32 */
 	cx_write(sram_ch->cmds_start + 4, 0);
 
@@ -731,7 +580,7 @@ static int cx25821_start_video_dma_upstream(struct cx25821_dev *dev,
 	cx_write(sram_ch->int_msk, tmp |= _intr_msk);
 
 	err = request_irq(dev->pci->irq, cx25821_upstream_irq,
-			IRQF_SHARED, dev->name, dev);
+			IRQF_SHARED, dev->name, chan);
 	if (err < 0) {
 		pr_err("%s: can't get upstream IRQ %d\n",
 		       dev->name, dev->pci->irq);
@@ -742,8 +591,8 @@ static int cx25821_start_video_dma_upstream(struct cx25821_dev *dev,
 	tmp = cx_read(sram_ch->dma_ctl);
 	cx_set(sram_ch->dma_ctl, tmp | FLD_VID_RISC_EN);
 
-	dev->_is_running = 1;
-	dev->_is_first_frame = 1;
+	out->_is_running = 1;
+	out->_is_first_frame = 1;
 
 	return 0;
 
@@ -752,107 +601,71 @@ fail_irq:
 	return err;
 }
 
-int cx25821_vidupstream_init_ch1(struct cx25821_dev *dev, int channel_select,
+int cx25821_vidupstream_init(struct cx25821_channel *chan,
 				 int pixel_format)
 {
-	struct sram_channel *sram_ch;
+	struct cx25821_video_out_data *out = chan->out;
+	struct cx25821_dev *dev = chan->dev;
+	const struct sram_channel *sram_ch;
 	u32 tmp;
 	int err = 0;
 	int data_frame_size = 0;
 	int risc_buffer_size = 0;
-	int str_length = 0;
 
-	if (dev->_is_running) {
+	if (out->_is_running) {
 		pr_info("Video Channel is still running so return!\n");
 		return 0;
 	}
 
-	dev->_channel_upstream_select = channel_select;
-	sram_ch = dev->channels[channel_select].sram_channels;
+	sram_ch = chan->sram_channels;
 
-	INIT_WORK(&dev->_irq_work_entry, cx25821_vidups_handler);
-	dev->_irq_queues = create_singlethread_workqueue("cx25821_workqueue");
+	out->is_60hz = dev->tvnorm & V4L2_STD_525_60;
 
-	if (!dev->_irq_queues) {
-		pr_err("create_singlethread_workqueue() for Video FAILED!\n");
-		return -ENOMEM;
-	}
 	/* 656/VIP SRC Upstream Channel I & J and 7 - Host Bus Interface for
 	 * channel A-C
 	 */
 	tmp = cx_read(VID_CH_MODE_SEL);
 	cx_write(VID_CH_MODE_SEL, tmp | 0x1B0001FF);
 
-	dev->_is_running = 0;
-	dev->_frame_count = 0;
-	dev->_file_status = RESET_STATUS;
-	dev->_lines_count = dev->_isNTSC ? 480 : 576;
-	dev->_pixel_format = pixel_format;
-	dev->_line_size = (dev->_pixel_format == PIXEL_FRMT_422) ?
+	out->_is_running = 0;
+	out->_frame_count = 0;
+	out->_file_status = RESET_STATUS;
+	out->_lines_count = out->is_60hz ? 480 : 576;
+	out->_pixel_format = pixel_format;
+	out->_line_size = (out->_pixel_format == PIXEL_FRMT_422) ?
 		(WIDTH_D1 * 2) : (WIDTH_D1 * 3) / 2;
-	data_frame_size = dev->_isNTSC ? NTSC_DATA_BUF_SZ : PAL_DATA_BUF_SZ;
-	risc_buffer_size = dev->_isNTSC ?
+	data_frame_size = out->is_60hz ? NTSC_DATA_BUF_SZ : PAL_DATA_BUF_SZ;
+	risc_buffer_size = out->is_60hz ?
 		NTSC_RISC_BUF_SIZE : PAL_RISC_BUF_SIZE;
 
-	if (dev->input_filename) {
-		str_length = strlen(dev->input_filename);
-		dev->_filename = kmemdup(dev->input_filename, str_length + 1,
-					 GFP_KERNEL);
-
-		if (!dev->_filename) {
-			err = -ENOENT;
-			goto error;
-		}
-	} else {
-		str_length = strlen(dev->_defaultname);
-		dev->_filename = kmemdup(dev->_defaultname, str_length + 1,
-					 GFP_KERNEL);
-
-		if (!dev->_filename) {
-			err = -ENOENT;
-			goto error;
-		}
-	}
-
-	/* Default if filename is empty string */
-	if (strcmp(dev->_filename, "") == 0) {
-		if (dev->_isNTSC) {
-			dev->_filename =
-				(dev->_pixel_format == PIXEL_FRMT_411) ?
-				"/root/vid411.yuv" : "/root/vidtest.yuv";
-		} else {
-			dev->_filename =
-				(dev->_pixel_format == PIXEL_FRMT_411) ?
-				"/root/pal411.yuv" : "/root/pal422.yuv";
-		}
-	}
-
-	dev->_is_running = 0;
-	dev->_frame_count = 0;
-	dev->_file_status = RESET_STATUS;
-	dev->_lines_count = dev->_isNTSC ? 480 : 576;
-	dev->_pixel_format = pixel_format;
-	dev->_line_size = (dev->_pixel_format == PIXEL_FRMT_422) ?
+	out->_is_running = 0;
+	out->_frame_count = 0;
+	out->_file_status = RESET_STATUS;
+	out->_lines_count = out->is_60hz ? 480 : 576;
+	out->_pixel_format = pixel_format;
+	out->_line_size = (out->_pixel_format == PIXEL_FRMT_422) ?
 		(WIDTH_D1 * 2) : (WIDTH_D1 * 3) / 2;
+	out->curpos = 0;
+	init_waitqueue_head(&out->waitq);
 
 	err = cx25821_sram_channel_setup_upstream(dev, sram_ch,
-			dev->_line_size, 0);
+			out->_line_size, 0);
 
 	/* setup fifo + format */
-	cx25821_set_pixelengine(dev, sram_ch, dev->_pixel_format);
+	cx25821_set_pixelengine(chan, sram_ch, out->_pixel_format);
 
-	dev->upstream_riscbuf_size = risc_buffer_size * 2;
-	dev->upstream_databuf_size = data_frame_size * 2;
+	out->upstream_riscbuf_size = risc_buffer_size * 2;
+	out->upstream_databuf_size = data_frame_size * 2;
 
 	/* Allocating buffers and prepare RISC program */
-	err = cx25821_upstream_buffer_prepare(dev, sram_ch, dev->_line_size);
+	err = cx25821_upstream_buffer_prepare(chan, sram_ch, out->_line_size);
 	if (err < 0) {
 		pr_err("%s: Failed to set up Video upstream buffers!\n",
 		       dev->name);
 		goto error;
 	}
 
-	cx25821_start_video_dma_upstream(dev, sram_ch);
+	cx25821_start_video_dma_upstream(chan, sram_ch);
 
 	return 0;
 
diff --git a/drivers/media/pci/cx25821/cx25821-video.c b/drivers/media/pci/cx25821/cx25821-video.c
index 1465591d000c..b194138961df 100644
--- a/drivers/media/pci/cx25821/cx25821-video.c
+++ b/drivers/media/pci/cx25821/cx25821-video.c
@@ -33,13 +33,10 @@ MODULE_AUTHOR("Hiep Huynh <hiep.huynh@conexant.com>");
 MODULE_LICENSE("GPL");
 
 static unsigned int video_nr[] = {[0 ... (CX25821_MAXBOARDS - 1)] = UNSET };
-static unsigned int radio_nr[] = {[0 ... (CX25821_MAXBOARDS - 1)] = UNSET };
 
 module_param_array(video_nr, int, NULL, 0444);
-module_param_array(radio_nr, int, NULL, 0444);
 
 MODULE_PARM_DESC(video_nr, "video device numbers");
-MODULE_PARM_DESC(radio_nr, "radio device numbers");
 
 static unsigned int video_debug = VIDEO_DEBUG;
 module_param(video_debug, int, 0644);
@@ -49,24 +46,14 @@ static unsigned int irq_debug;
 module_param(irq_debug, int, 0644);
 MODULE_PARM_DESC(irq_debug, "enable debug messages [IRQ handler]");
 
-unsigned int vid_limit = 16;
+static unsigned int vid_limit = 16;
 module_param(vid_limit, int, 0644);
 MODULE_PARM_DESC(vid_limit, "capture memory limit in megabytes");
 
-static void cx25821_init_controls(struct cx25821_dev *dev, int chan_num);
-
-static const struct v4l2_file_operations video_fops;
-static const struct v4l2_ioctl_ops video_ioctl_ops;
-
 #define FORMAT_FLAGS_PACKED       0x01
 
-struct cx25821_fmt formats[] = {
+static const struct cx25821_fmt formats[] = {
 	{
-		.name = "8 bpp, gray",
-		.fourcc = V4L2_PIX_FMT_GREY,
-		.depth = 8,
-		.flags = FORMAT_FLAGS_PACKED,
-	 }, {
 		.name = "4:1:1, packed, Y41P",
 		.fourcc = V4L2_PIX_FMT_Y41P,
 		.depth = 12,
@@ -76,36 +63,16 @@ struct cx25821_fmt formats[] = {
 		.fourcc = V4L2_PIX_FMT_YUYV,
 		.depth = 16,
 		.flags = FORMAT_FLAGS_PACKED,
-	}, {
-		.name = "4:2:2, packed, UYVY",
-		.fourcc = V4L2_PIX_FMT_UYVY,
-		.depth = 16,
-		.flags = FORMAT_FLAGS_PACKED,
-	}, {
-		.name = "4:2:0, YUV",
-		.fourcc = V4L2_PIX_FMT_YUV420,
-		.depth = 12,
-		.flags = FORMAT_FLAGS_PACKED,
 	},
 };
 
-int cx25821_get_format_size(void)
-{
-	return ARRAY_SIZE(formats);
-}
-
-struct cx25821_fmt *cx25821_format_by_fourcc(unsigned int fourcc)
+static const struct cx25821_fmt *cx25821_format_by_fourcc(unsigned int fourcc)
 {
 	unsigned int i;
 
-	if (fourcc == V4L2_PIX_FMT_Y41P || fourcc == V4L2_PIX_FMT_YUV411P)
-		return formats + 1;
-
 	for (i = 0; i < ARRAY_SIZE(formats); i++)
 		if (formats[i].fourcc == fourcc)
 			return formats + i;
-
-	pr_err("%s(0x%08x) NOT FOUND\n", __func__, fourcc);
 	return NULL;
 }
 
@@ -144,129 +111,10 @@ void cx25821_video_wakeup(struct cx25821_dev *dev, struct cx25821_dmaqueue *q,
 		pr_err("%s: %d buffers handled (should be 1)\n", __func__, bc);
 }
 
-#ifdef TUNER_FLAG
-int cx25821_set_tvnorm(struct cx25821_dev *dev, v4l2_std_id norm)
-{
-	dprintk(1, "%s(norm = 0x%08x) name: [%s]\n",
-		__func__, (unsigned int)norm, v4l2_norm_to_name(norm));
-
-	dev->tvnorm = norm;
-
-	/* Tell the internal A/V decoder */
-	cx25821_call_all(dev, core, s_std, norm);
-
-	return 0;
-}
-#endif
-
-struct video_device *cx25821_vdev_init(struct cx25821_dev *dev,
-				       struct pci_dev *pci,
-				       struct video_device *template,
-				       char *type)
-{
-	struct video_device *vfd;
-	dprintk(1, "%s()\n", __func__);
-
-	vfd = video_device_alloc();
-	if (NULL == vfd)
-		return NULL;
-	*vfd = *template;
-	vfd->v4l2_dev = &dev->v4l2_dev;
-	vfd->release = video_device_release;
-	snprintf(vfd->name, sizeof(vfd->name), "%s %s (%s)", dev->name, type,
-		 cx25821_boards[dev->board].name);
-	video_set_drvdata(vfd, dev);
-	return vfd;
-}
-
-/*
-static int cx25821_ctrl_query(struct v4l2_queryctrl *qctrl)
-{
-	int i;
-
-	if (qctrl->id < V4L2_CID_BASE || qctrl->id >= V4L2_CID_LASTP1)
-		return -EINVAL;
-	for (i = 0; i < CX25821_CTLS; i++)
-		if (cx25821_ctls[i].v.id == qctrl->id)
-			break;
-	if (i == CX25821_CTLS) {
-		*qctrl = no_ctl;
-		return 0;
-	}
-	*qctrl = cx25821_ctls[i].v;
-	return 0;
-}
-*/
-
-/* resource management */
-int cx25821_res_get(struct cx25821_dev *dev, struct cx25821_fh *fh,
-		    unsigned int bit)
-{
-	dprintk(1, "%s()\n", __func__);
-	if (fh->resources & bit)
-		/* have it already allocated */
-		return 1;
-
-	/* is it free? */
-	mutex_lock(&dev->lock);
-	if (dev->channels[fh->channel_id].resources & bit) {
-		/* no, someone else uses it */
-		mutex_unlock(&dev->lock);
-		return 0;
-	}
-	/* it's free, grab it */
-	fh->resources |= bit;
-	dev->channels[fh->channel_id].resources |= bit;
-	dprintk(1, "res: get %d\n", bit);
-	mutex_unlock(&dev->lock);
-	return 1;
-}
-
-int cx25821_res_check(struct cx25821_fh *fh, unsigned int bit)
-{
-	return fh->resources & bit;
-}
-
-int cx25821_res_locked(struct cx25821_fh *fh, unsigned int bit)
-{
-	return fh->dev->channels[fh->channel_id].resources & bit;
-}
-
-void cx25821_res_free(struct cx25821_dev *dev, struct cx25821_fh *fh,
-		      unsigned int bits)
-{
-	BUG_ON((fh->resources & bits) != bits);
-	dprintk(1, "%s()\n", __func__);
-
-	mutex_lock(&dev->lock);
-	fh->resources &= ~bits;
-	dev->channels[fh->channel_id].resources &= ~bits;
-	dprintk(1, "res: put %d\n", bits);
-	mutex_unlock(&dev->lock);
-}
-
-int cx25821_video_mux(struct cx25821_dev *dev, unsigned int input)
-{
-	struct v4l2_routing route;
-	memset(&route, 0, sizeof(route));
-
-	dprintk(1, "%s(): video_mux: %d [vmux=%d, gpio=0x%x,0x%x,0x%x,0x%x]\n",
-		__func__, input, INPUT(input)->vmux, INPUT(input)->gpio0,
-		INPUT(input)->gpio1, INPUT(input)->gpio2, INPUT(input)->gpio3);
-	dev->input = input;
-
-	route.input = INPUT(input)->vmux;
-
-	/* Tell the internal A/V decoder */
-	cx25821_call_all(dev, video, s_routing, INPUT(input)->vmux, 0, 0);
-
-	return 0;
-}
-
 int cx25821_start_video_dma(struct cx25821_dev *dev,
 			    struct cx25821_dmaqueue *q,
 			    struct cx25821_buffer *buf,
-			    struct sram_channel *channel)
+			    const struct sram_channel *channel)
 {
 	int tmp = 0;
 
@@ -293,7 +141,7 @@ int cx25821_start_video_dma(struct cx25821_dev *dev,
 
 static int cx25821_restart_video_queue(struct cx25821_dev *dev,
 				       struct cx25821_dmaqueue *q,
-				       struct sram_channel *channel)
+				       const struct sram_channel *channel)
 {
 	struct cx25821_buffer *buf, *prev;
 	struct list_head *item;
@@ -346,8 +194,8 @@ static void cx25821_vid_timeout(unsigned long data)
 {
 	struct cx25821_data *timeout_data = (struct cx25821_data *)data;
 	struct cx25821_dev *dev = timeout_data->dev;
-	struct sram_channel *channel = timeout_data->channel;
-	struct cx25821_dmaqueue *q = &dev->channels[channel->i].vidq;
+	const struct sram_channel *channel = timeout_data->channel;
+	struct cx25821_dmaqueue *q = &dev->channels[channel->i].dma_vidq;
 	struct cx25821_buffer *buf;
 	unsigned long flags;
 
@@ -373,7 +221,7 @@ int cx25821_video_irq(struct cx25821_dev *dev, int chan_num, u32 status)
 	u32 count = 0;
 	int handled = 0;
 	u32 mask;
-	struct sram_channel *channel = dev->channels[chan_num].sram_channels;
+	const struct sram_channel *channel = dev->channels[chan_num].sram_channels;
 
 	mask = cx_read(channel->int_msk);
 	if (0 == (status & mask))
@@ -393,7 +241,7 @@ int cx25821_video_irq(struct cx25821_dev *dev, int chan_num, u32 status)
 	if (status & FLD_VID_DST_RISC1) {
 		spin_lock(&dev->slock);
 		count = cx_read(channel->gpcnt);
-		cx25821_video_wakeup(dev, &dev->channels[channel->i].vidq,
+		cx25821_video_wakeup(dev, &dev->channels[channel->i].dma_vidq,
 				count);
 		spin_unlock(&dev->slock);
 		handled++;
@@ -404,122 +252,19 @@ int cx25821_video_irq(struct cx25821_dev *dev, int chan_num, u32 status)
 		dprintk(2, "stopper video\n");
 		spin_lock(&dev->slock);
 		cx25821_restart_video_queue(dev,
-				&dev->channels[channel->i].vidq, channel);
+				&dev->channels[channel->i].dma_vidq, channel);
 		spin_unlock(&dev->slock);
 		handled++;
 	}
 	return handled;
 }
 
-void cx25821_videoioctl_unregister(struct cx25821_dev *dev)
-{
-	if (dev->ioctl_dev) {
-		if (video_is_registered(dev->ioctl_dev))
-			video_unregister_device(dev->ioctl_dev);
-		else
-			video_device_release(dev->ioctl_dev);
-
-		dev->ioctl_dev = NULL;
-	}
-}
-
-void cx25821_video_unregister(struct cx25821_dev *dev, int chan_num)
-{
-	cx_clear(PCI_INT_MSK, 1);
-
-	if (dev->channels[chan_num].video_dev) {
-		if (video_is_registered(dev->channels[chan_num].video_dev))
-			video_unregister_device(
-					dev->channels[chan_num].video_dev);
-		else
-			video_device_release(
-					dev->channels[chan_num].video_dev);
-
-		dev->channels[chan_num].video_dev = NULL;
-
-		btcx_riscmem_free(dev->pci,
-				&dev->channels[chan_num].vidq.stopper);
-
-		pr_warn("device %d released!\n", chan_num);
-	}
-
-}
-
-int cx25821_video_register(struct cx25821_dev *dev)
-{
-	int err;
-	int i;
-
-	struct video_device cx25821_video_device = {
-		.name = "cx25821-video",
-		.fops = &video_fops,
-		.minor = -1,
-		.ioctl_ops = &video_ioctl_ops,
-		.tvnorms = CX25821_NORMS,
-		.current_norm = V4L2_STD_NTSC_M,
-	};
-
-	spin_lock_init(&dev->slock);
-
-	for (i = 0; i < MAX_VID_CHANNEL_NUM - 1; ++i) {
-		cx25821_init_controls(dev, i);
-
-		cx25821_risc_stopper(dev->pci, &dev->channels[i].vidq.stopper,
-			dev->channels[i].sram_channels->dma_ctl, 0x11, 0);
-
-		dev->channels[i].sram_channels = &cx25821_sram_channels[i];
-		dev->channels[i].video_dev = NULL;
-		dev->channels[i].resources = 0;
-
-		cx_write(dev->channels[i].sram_channels->int_stat, 0xffffffff);
-
-		INIT_LIST_HEAD(&dev->channels[i].vidq.active);
-		INIT_LIST_HEAD(&dev->channels[i].vidq.queued);
-
-		dev->channels[i].timeout_data.dev = dev;
-		dev->channels[i].timeout_data.channel =
-			&cx25821_sram_channels[i];
-		dev->channels[i].vidq.timeout.function = cx25821_vid_timeout;
-		dev->channels[i].vidq.timeout.data =
-			(unsigned long)&dev->channels[i].timeout_data;
-		init_timer(&dev->channels[i].vidq.timeout);
-
-		/* register v4l devices */
-		dev->channels[i].video_dev = cx25821_vdev_init(dev, dev->pci,
-				&cx25821_video_device, "video");
-
-		err = video_register_device(dev->channels[i].video_dev,
-				VFL_TYPE_GRABBER, video_nr[dev->nr]);
-
-		if (err < 0)
-			goto fail_unreg;
-
-	}
-
-	/* set PCI interrupt */
-	cx_set(PCI_INT_MSK, 0xff);
-
-	/* initial device configuration */
-	mutex_lock(&dev->lock);
-#ifdef TUNER_FLAG
-	dev->tvnorm = cx25821_video_device.current_norm;
-	cx25821_set_tvnorm(dev, dev->tvnorm);
-#endif
-	mutex_unlock(&dev->lock);
-
-	return 0;
-
-fail_unreg:
-	cx25821_video_unregister(dev, i);
-	return err;
-}
-
-int cx25821_buffer_setup(struct videobuf_queue *q, unsigned int *count,
+static int cx25821_buffer_setup(struct videobuf_queue *q, unsigned int *count,
 		 unsigned int *size)
 {
-	struct cx25821_fh *fh = q->priv_data;
+	struct cx25821_channel *chan = q->priv_data;
 
-	*size = fh->fmt->depth * fh->width * fh->height >> 3;
+	*size = chan->fmt->depth * chan->width * chan->height >> 3;
 
 	if (0 == *count)
 		*count = 32;
@@ -530,35 +275,34 @@ int cx25821_buffer_setup(struct videobuf_queue *q, unsigned int *count,
 	return 0;
 }
 
-int cx25821_buffer_prepare(struct videobuf_queue *q, struct videobuf_buffer *vb,
+static int cx25821_buffer_prepare(struct videobuf_queue *q, struct videobuf_buffer *vb,
 		   enum v4l2_field field)
 {
-	struct cx25821_fh *fh = q->priv_data;
-	struct cx25821_dev *dev = fh->dev;
+	struct cx25821_channel *chan = q->priv_data;
+	struct cx25821_dev *dev = chan->dev;
 	struct cx25821_buffer *buf =
 		container_of(vb, struct cx25821_buffer, vb);
 	int rc, init_buffer = 0;
 	u32 line0_offset;
 	struct videobuf_dmabuf *dma = videobuf_to_dma(&buf->vb);
 	int bpl_local = LINE_SIZE_D1;
-	int channel_opened = fh->channel_id;
 
-	BUG_ON(NULL == fh->fmt);
-	if (fh->width < 48 || fh->width > 720 ||
-	    fh->height < 32 || fh->height > 576)
+	BUG_ON(NULL == chan->fmt);
+	if (chan->width < 48 || chan->width > 720 ||
+	    chan->height < 32 || chan->height > 576)
 		return -EINVAL;
 
-	buf->vb.size = (fh->width * fh->height * fh->fmt->depth) >> 3;
+	buf->vb.size = (chan->width * chan->height * chan->fmt->depth) >> 3;
 
 	if (0 != buf->vb.baddr && buf->vb.bsize < buf->vb.size)
 		return -EINVAL;
 
-	if (buf->fmt != fh->fmt ||
-	    buf->vb.width != fh->width ||
-	    buf->vb.height != fh->height || buf->vb.field != field) {
-		buf->fmt = fh->fmt;
-		buf->vb.width = fh->width;
-		buf->vb.height = fh->height;
+	if (buf->fmt != chan->fmt ||
+	    buf->vb.width != chan->width ||
+	    buf->vb.height != chan->height || buf->vb.field != field) {
+		buf->fmt = chan->fmt;
+		buf->vb.width = chan->width;
+		buf->vb.height = chan->height;
 		buf->vb.field = field;
 		init_buffer = 1;
 	}
@@ -575,34 +319,21 @@ int cx25821_buffer_prepare(struct videobuf_queue *q, struct videobuf_buffer *vb,
 	dprintk(1, "init_buffer=%d\n", init_buffer);
 
 	if (init_buffer) {
-
-		channel_opened = dev->channel_opened;
-		if (channel_opened < 0 || channel_opened > 7)
-			channel_opened = 7;
-
-		if (dev->channels[channel_opened].pixel_formats ==
-				PIXEL_FRMT_411)
+		if (chan->pixel_formats == PIXEL_FRMT_411)
 			buf->bpl = (buf->fmt->depth * buf->vb.width) >> 3;
 		else
 			buf->bpl = (buf->fmt->depth >> 3) * (buf->vb.width);
 
-		if (dev->channels[channel_opened].pixel_formats ==
-				PIXEL_FRMT_411) {
+		if (chan->pixel_formats == PIXEL_FRMT_411) {
 			bpl_local = buf->bpl;
 		} else {
 			bpl_local = buf->bpl;   /* Default */
 
-			if (channel_opened >= 0 && channel_opened <= 7) {
-				if (dev->channels[channel_opened]
-						.use_cif_resolution) {
-					if (dev->tvnorm & V4L2_STD_PAL_BG ||
-					    dev->tvnorm & V4L2_STD_PAL_DK)
-						bpl_local = 352 << 1;
-					else
-						bpl_local = dev->channels[
-							channel_opened].
-							cif_width << 1;
-				}
+			if (chan->use_cif_resolution) {
+				if (dev->tvnorm & V4L2_STD_625_50)
+					bpl_local = 352 << 1;
+				else
+					bpl_local = chan->cif_width << 1;
 			}
 		}
 
@@ -645,8 +376,8 @@ int cx25821_buffer_prepare(struct videobuf_queue *q, struct videobuf_buffer *vb,
 	}
 
 	dprintk(2, "[%p/%d] buffer_prep - %dx%d %dbpp \"%s\" - dma=0x%08lx\n",
-		buf, buf->vb.i, fh->width, fh->height, fh->fmt->depth,
-		fh->fmt->name, (unsigned long)buf->risc.dma);
+		buf, buf->vb.i, chan->width, chan->height, chan->fmt->depth,
+		chan->fmt->name, (unsigned long)buf->risc.dma);
 
 	buf->vb.state = VIDEOBUF_PREPARED;
 
@@ -657,7 +388,7 @@ fail:
 	return rc;
 }
 
-void cx25821_buffer_release(struct videobuf_queue *q,
+static void cx25821_buffer_release(struct videobuf_queue *q,
 			    struct videobuf_buffer *vb)
 {
 	struct cx25821_buffer *buf =
@@ -666,33 +397,11 @@ void cx25821_buffer_release(struct videobuf_queue *q,
 	cx25821_free_buffer(q, buf);
 }
 
-struct videobuf_queue *get_queue(struct cx25821_fh *fh)
-{
-	switch (fh->type) {
-	case V4L2_BUF_TYPE_VIDEO_CAPTURE:
-		return &fh->vidq;
-	default:
-		BUG();
-		return NULL;
-	}
-}
-
-int cx25821_get_resource(struct cx25821_fh *fh, int resource)
-{
-	switch (fh->type) {
-	case V4L2_BUF_TYPE_VIDEO_CAPTURE:
-		return resource;
-	default:
-		BUG();
-		return 0;
-	}
-}
-
-int cx25821_video_mmap(struct file *file, struct vm_area_struct *vma)
+static int cx25821_video_mmap(struct file *file, struct vm_area_struct *vma)
 {
-	struct cx25821_fh *fh = file->private_data;
+	struct cx25821_channel *chan = video_drvdata(file);
 
-	return videobuf_mmap_mapper(get_queue(fh), vma);
+	return videobuf_mmap_mapper(&chan->vidq, vma);
 }
 
 
@@ -701,9 +410,9 @@ static void buffer_queue(struct videobuf_queue *vq, struct videobuf_buffer *vb)
 	struct cx25821_buffer *buf =
 		container_of(vb, struct cx25821_buffer, vb);
 	struct cx25821_buffer *prev;
-	struct cx25821_fh *fh = vq->priv_data;
-	struct cx25821_dev *dev = fh->dev;
-	struct cx25821_dmaqueue *q = &dev->channels[fh->channel_id].vidq;
+	struct cx25821_channel *chan = vq->priv_data;
+	struct cx25821_dev *dev = chan->dev;
+	struct cx25821_dmaqueue *q = &dev->channels[chan->id].dma_vidq;
 
 	/* add jump to stopper */
 	buf->risc.jmp[0] = cpu_to_le32(RISC_JUMP | RISC_IRQ1 | RISC_CNT_INC);
@@ -720,8 +429,7 @@ static void buffer_queue(struct videobuf_queue *vq, struct videobuf_buffer *vb)
 
 	} else if (list_empty(&q->active)) {
 		list_add_tail(&buf->vb.queue, &q->active);
-		cx25821_start_video_dma(dev, q, buf,
-				dev->channels[fh->channel_id].sram_channels);
+		cx25821_start_video_dma(dev, q, buf, chan->sram_channels);
 		buf->vb.state = VIDEOBUF_ACTIVE;
 		buf->count = q->count++;
 		mod_timer(&q->timeout, jiffies + BUFFER_TIMEOUT);
@@ -762,1183 +470,487 @@ static struct videobuf_queue_ops cx25821_video_qops = {
 	.buf_release = cx25821_buffer_release,
 };
 
-static int video_open(struct file *file)
-{
-	struct video_device *vdev = video_devdata(file);
-	struct cx25821_dev *h, *dev = video_drvdata(file);
-	struct cx25821_fh *fh;
-	struct list_head *list;
-	int minor = video_devdata(file)->minor;
-	enum v4l2_buf_type type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
-	u32 pix_format;
-	int ch_id = 0;
-	int i;
-
-	dprintk(1, "open dev=%s type=%s\n", video_device_node_name(vdev),
-			v4l2_type_names[type]);
-
-	/* allocate + initialize per filehandle data */
-	fh = kzalloc(sizeof(*fh), GFP_KERNEL);
-	if (NULL == fh)
-		return -ENOMEM;
-
-	mutex_lock(&cx25821_devlist_mutex);
-
-	list_for_each(list, &cx25821_devlist)
-	{
-		h = list_entry(list, struct cx25821_dev, devlist);
-
-		for (i = 0; i < MAX_VID_CHANNEL_NUM; i++) {
-			if (h->channels[i].video_dev &&
-			    h->channels[i].video_dev->minor == minor) {
-				dev = h;
-				ch_id = i;
-				type  = V4L2_BUF_TYPE_VIDEO_CAPTURE;
-			}
-		}
-	}
-
-	if (NULL == dev) {
-		mutex_unlock(&cx25821_devlist_mutex);
-		kfree(fh);
-		return -ENODEV;
-	}
-
-	file->private_data = fh;
-	fh->dev = dev;
-	fh->type = type;
-	fh->width = 720;
-	fh->channel_id = ch_id;
-
-	if (dev->tvnorm & V4L2_STD_PAL_BG || dev->tvnorm & V4L2_STD_PAL_DK)
-		fh->height = 576;
-	else
-		fh->height = 480;
-
-	dev->channel_opened = fh->channel_id;
-	if (dev->channels[ch_id].pixel_formats == PIXEL_FRMT_411)
-		pix_format = V4L2_PIX_FMT_Y41P;
-	else
-		pix_format = V4L2_PIX_FMT_YUYV;
-	fh->fmt = cx25821_format_by_fourcc(pix_format);
-
-	v4l2_prio_open(&dev->channels[ch_id].prio, &fh->prio);
-
-	videobuf_queue_sg_init(&fh->vidq, &cx25821_video_qops, &dev->pci->dev,
-			&dev->slock, V4L2_BUF_TYPE_VIDEO_CAPTURE,
-			V4L2_FIELD_INTERLACED, sizeof(struct cx25821_buffer),
-			fh, NULL);
-
-	dprintk(1, "post videobuf_queue_init()\n");
-	mutex_unlock(&cx25821_devlist_mutex);
-
-	return 0;
-}
-
 static ssize_t video_read(struct file *file, char __user * data, size_t count,
 			 loff_t *ppos)
 {
-	struct cx25821_fh *fh = file->private_data;
-
-	switch (fh->type) {
-	case V4L2_BUF_TYPE_VIDEO_CAPTURE:
-		if (cx25821_res_locked(fh, RESOURCE_VIDEO0))
-			return -EBUSY;
+	struct v4l2_fh *fh = file->private_data;
+	struct cx25821_channel *chan = video_drvdata(file);
+	struct cx25821_dev *dev = chan->dev;
+	int err = 0;
 
-		return videobuf_read_one(&fh->vidq, data, count, ppos,
-					file->f_flags & O_NONBLOCK);
-
-	default:
-		BUG();
-		return 0;
+	if (mutex_lock_interruptible(&dev->lock))
+		return -ERESTARTSYS;
+	if (chan->streaming_fh && chan->streaming_fh != fh) {
+		err = -EBUSY;
+		goto unlock;
 	}
+	chan->streaming_fh = fh;
+
+	err = videobuf_read_one(&chan->vidq, data, count, ppos,
+				file->f_flags & O_NONBLOCK);
+unlock:
+	mutex_unlock(&dev->lock);
+	return err;
 }
 
 static unsigned int video_poll(struct file *file,
 			      struct poll_table_struct *wait)
 {
-	struct cx25821_fh *fh = file->private_data;
-	struct cx25821_buffer *buf;
-
-	if (cx25821_res_check(fh, RESOURCE_VIDEO0)) {
-		/* streaming capture */
-		if (list_empty(&fh->vidq.stream))
-			return POLLERR;
-		buf = list_entry(fh->vidq.stream.next,
-				struct cx25821_buffer, vb.stream);
-	} else {
-		/* read() capture */
-		buf = (struct cx25821_buffer *)fh->vidq.read_buf;
-		if (NULL == buf)
-			return POLLERR;
-	}
-
-	poll_wait(file, &buf->vb.done, wait);
-	if (buf->vb.state == VIDEOBUF_DONE || buf->vb.state == VIDEOBUF_ERROR) {
-		if (buf->vb.state == VIDEOBUF_DONE) {
-			struct cx25821_dev *dev = fh->dev;
-
-			if (dev && dev->channels[fh->channel_id]
-					.use_cif_resolution) {
-				u8 cam_id = *((char *)buf->vb.baddr + 3);
-				memcpy((char *)buf->vb.baddr,
-				      (char *)buf->vb.baddr + (fh->width * 2),
-				      (fh->width * 2));
-				*((char *)buf->vb.baddr + 3) = cam_id;
-			}
+	struct cx25821_channel *chan = video_drvdata(file);
+	unsigned long req_events = poll_requested_events(wait);
+	unsigned int res = v4l2_ctrl_poll(file, wait);
+
+	if (req_events & (POLLIN | POLLRDNORM))
+		res |= videobuf_poll_stream(file, &chan->vidq, wait);
+	return res;
+
+	/* This doesn't belong in poll(). This can be done
+	 * much better with vb2. We keep this code here as a
+	 * reminder.
+	if ((res & POLLIN) && buf->vb.state == VIDEOBUF_DONE) {
+		struct cx25821_dev *dev = chan->dev;
+
+		if (dev && chan->use_cif_resolution) {
+			u8 cam_id = *((char *)buf->vb.baddr + 3);
+			memcpy((char *)buf->vb.baddr,
+					(char *)buf->vb.baddr + (chan->width * 2),
+					(chan->width * 2));
+			*((char *)buf->vb.baddr + 3) = cam_id;
 		}
-
-		return POLLIN | POLLRDNORM;
 	}
-
-	return 0;
+	 */
 }
 
 static int video_release(struct file *file)
 {
-	struct cx25821_fh *fh = file->private_data;
-	struct cx25821_dev *dev = fh->dev;
+	struct cx25821_channel *chan = video_drvdata(file);
+	struct v4l2_fh *fh = file->private_data;
+	struct cx25821_dev *dev = chan->dev;
+	const struct sram_channel *sram_ch =
+		dev->channels[0].sram_channels;
 
+	mutex_lock(&dev->lock);
 	/* stop the risc engine and fifo */
-	cx_write(channel0->dma_ctl, 0); /* FIFO and RISC disable */
+	cx_write(sram_ch->dma_ctl, 0); /* FIFO and RISC disable */
 
 	/* stop video capture */
-	if (cx25821_res_check(fh, RESOURCE_VIDEO0)) {
-		videobuf_queue_cancel(&fh->vidq);
-		cx25821_res_free(dev, fh, RESOURCE_VIDEO0);
+	if (chan->streaming_fh == fh) {
+		videobuf_queue_cancel(&chan->vidq);
+		chan->streaming_fh = NULL;
 	}
 
-	if (fh->vidq.read_buf) {
-		cx25821_buffer_release(&fh->vidq, fh->vidq.read_buf);
-		kfree(fh->vidq.read_buf);
+	if (chan->vidq.read_buf) {
+		cx25821_buffer_release(&chan->vidq, chan->vidq.read_buf);
+		kfree(chan->vidq.read_buf);
 	}
 
-	videobuf_mmap_free(&fh->vidq);
-
-	v4l2_prio_close(&dev->channels[fh->channel_id].prio, fh->prio);
-	file->private_data = NULL;
-	kfree(fh);
+	videobuf_mmap_free(&chan->vidq);
+	mutex_unlock(&dev->lock);
 
-	return 0;
+	return v4l2_fh_release(file);
 }
 
-static int vidioc_streamon(struct file *file, void *priv, enum v4l2_buf_type i)
-{
-	struct cx25821_fh *fh = priv;
-	struct cx25821_dev *dev = fh->dev;
+/* VIDEO IOCTLS */
 
-	if (unlikely(fh->type != V4L2_BUF_TYPE_VIDEO_CAPTURE))
+static int cx25821_vidioc_enum_fmt_vid_cap(struct file *file, void *priv,
+			    struct v4l2_fmtdesc *f)
+{
+	if (unlikely(f->index >= ARRAY_SIZE(formats)))
 		return -EINVAL;
 
-	if (unlikely(i != fh->type))
-		return -EINVAL;
+	strlcpy(f->description, formats[f->index].name, sizeof(f->description));
+	f->pixelformat = formats[f->index].fourcc;
 
-	if (unlikely(!cx25821_res_get(dev, fh, cx25821_get_resource(fh,
-						RESOURCE_VIDEO0))))
-		return -EBUSY;
+	return 0;
+}
+
+static int cx25821_vidioc_g_fmt_vid_cap(struct file *file, void *priv,
+				 struct v4l2_format *f)
+{
+	struct cx25821_channel *chan = video_drvdata(file);
+
+	f->fmt.pix.width = chan->width;
+	f->fmt.pix.height = chan->height;
+	f->fmt.pix.field = chan->vidq.field;
+	f->fmt.pix.pixelformat = chan->fmt->fourcc;
+	f->fmt.pix.bytesperline = (chan->width * chan->fmt->depth) >> 3;
+	f->fmt.pix.sizeimage = chan->height * f->fmt.pix.bytesperline;
+	f->fmt.pix.colorspace = V4L2_COLORSPACE_SMPTE170M;
+	f->fmt.pix.priv = 0;
 
-	return videobuf_streamon(get_queue(fh));
+	return 0;
 }
 
-static int vidioc_streamoff(struct file *file, void *priv, enum v4l2_buf_type i)
+static int cx25821_vidioc_try_fmt_vid_cap(struct file *file, void *priv,
+				   struct v4l2_format *f)
 {
-	struct cx25821_fh *fh = priv;
-	struct cx25821_dev *dev = fh->dev;
-	int err, res;
+	struct cx25821_channel *chan = video_drvdata(file);
+	struct cx25821_dev *dev = chan->dev;
+	const struct cx25821_fmt *fmt;
+	enum v4l2_field field = f->fmt.pix.field;
+	unsigned int maxw, maxh;
+	unsigned w;
 
-	if (fh->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
-		return -EINVAL;
-	if (i != fh->type)
+	fmt = cx25821_format_by_fourcc(f->fmt.pix.pixelformat);
+	if (NULL == fmt)
 		return -EINVAL;
+	maxw = 720;
+	maxh = (dev->tvnorm & V4L2_STD_625_50) ? 576 : 480;
+
+	w = f->fmt.pix.width;
+	if (field != V4L2_FIELD_BOTTOM)
+		field = V4L2_FIELD_TOP;
+	if (w < 352) {
+		w = 176;
+		f->fmt.pix.height = maxh / 4;
+	} else if (w < 720) {
+		w = 352;
+		f->fmt.pix.height = maxh / 2;
+	} else {
+		w = 720;
+		f->fmt.pix.height = maxh;
+		field = V4L2_FIELD_INTERLACED;
+	}
+	f->fmt.pix.field = field;
+	f->fmt.pix.width = w;
+	f->fmt.pix.bytesperline = (f->fmt.pix.width * fmt->depth) >> 3;
+	f->fmt.pix.sizeimage = f->fmt.pix.height * f->fmt.pix.bytesperline;
+	f->fmt.pix.colorspace = V4L2_COLORSPACE_SMPTE170M;
+	f->fmt.pix.priv = 0;
 
-	res = cx25821_get_resource(fh, RESOURCE_VIDEO0);
-	err = videobuf_streamoff(get_queue(fh));
-	if (err < 0)
-		return err;
-	cx25821_res_free(dev, fh, res);
 	return 0;
 }
 
 static int vidioc_s_fmt_vid_cap(struct file *file, void *priv,
 				struct v4l2_format *f)
 {
-	struct cx25821_fh *fh = priv;
-	struct cx25821_dev *dev = ((struct cx25821_fh *)priv)->dev;
-	struct v4l2_mbus_framefmt mbus_fmt;
-	int err;
+	struct cx25821_channel *chan = video_drvdata(file);
+	struct cx25821_dev *dev = chan->dev;
 	int pix_format = PIXEL_FRMT_422;
+	int err;
 
-	if (fh) {
-		err = v4l2_prio_check(&dev->channels[fh->channel_id].prio,
-				      fh->prio);
-		if (0 != err)
-			return err;
-	}
-
-	dprintk(2, "%s()\n", __func__);
 	err = cx25821_vidioc_try_fmt_vid_cap(file, priv, f);
 
 	if (0 != err)
 		return err;
 
-	fh->fmt = cx25821_format_by_fourcc(f->fmt.pix.pixelformat);
-	fh->vidq.field = f->fmt.pix.field;
-
-	/* check if width and height is valid based on set standard */
-	if (cx25821_is_valid_width(f->fmt.pix.width, dev->tvnorm))
-		fh->width = f->fmt.pix.width;
-
-	if (cx25821_is_valid_height(f->fmt.pix.height, dev->tvnorm))
-		fh->height = f->fmt.pix.height;
+	chan->fmt = cx25821_format_by_fourcc(f->fmt.pix.pixelformat);
+	chan->vidq.field = f->fmt.pix.field;
+	chan->width = f->fmt.pix.width;
+	chan->height = f->fmt.pix.height;
 
 	if (f->fmt.pix.pixelformat == V4L2_PIX_FMT_Y41P)
 		pix_format = PIXEL_FRMT_411;
-	else if (f->fmt.pix.pixelformat == V4L2_PIX_FMT_YUYV)
-		pix_format = PIXEL_FRMT_422;
 	else
-		return -EINVAL;
+		pix_format = PIXEL_FRMT_422;
 
 	cx25821_set_pixel_format(dev, SRAM_CH00, pix_format);
 
 	/* check if cif resolution */
-	if (fh->width == 320 || fh->width == 352)
-		dev->channels[fh->channel_id].use_cif_resolution = 1;
+	if (chan->width == 320 || chan->width == 352)
+		chan->use_cif_resolution = 1;
 	else
-		dev->channels[fh->channel_id].use_cif_resolution = 0;
-
-	dev->channels[fh->channel_id].cif_width = fh->width;
-	medusa_set_resolution(dev, fh->width, SRAM_CH00);
-
-	dprintk(2, "%s(): width=%d height=%d field=%d\n", __func__, fh->width,
-		fh->height, fh->vidq.field);
-	v4l2_fill_mbus_format(&mbus_fmt, &f->fmt.pix, V4L2_MBUS_FMT_FIXED);
-	cx25821_call_all(dev, video, s_mbus_fmt, &mbus_fmt);
+		chan->use_cif_resolution = 0;
 
+	chan->cif_width = chan->width;
+	medusa_set_resolution(dev, chan->width, SRAM_CH00);
 	return 0;
 }
 
-static int vidioc_dqbuf(struct file *file, void *priv, struct v4l2_buffer *p)
+static int vidioc_streamon(struct file *file, void *priv, enum v4l2_buf_type i)
 {
-	int ret_val = 0;
-	struct cx25821_fh *fh = priv;
-	struct cx25821_dev *dev = ((struct cx25821_fh *)priv)->dev;
+	struct cx25821_channel *chan = video_drvdata(file);
 
-	ret_val = videobuf_dqbuf(get_queue(fh), p, file->f_flags & O_NONBLOCK);
+	if (i != V4L2_BUF_TYPE_VIDEO_CAPTURE)
+		return -EINVAL;
 
-	p->sequence = dev->channels[fh->channel_id].vidq.count;
+	if (chan->streaming_fh && chan->streaming_fh != priv)
+		return -EBUSY;
+	chan->streaming_fh = priv;
 
-	return ret_val;
+	return videobuf_streamon(&chan->vidq);
 }
 
-static int vidioc_log_status(struct file *file, void *priv)
+static int vidioc_streamoff(struct file *file, void *priv, enum v4l2_buf_type i)
 {
-	struct cx25821_dev *dev = ((struct cx25821_fh *)priv)->dev;
-	struct cx25821_fh *fh = priv;
-	char name[32 + 2];
+	struct cx25821_channel *chan = video_drvdata(file);
 
-	struct sram_channel *sram_ch = dev->channels[fh->channel_id]
-								.sram_channels;
-	u32 tmp = 0;
-
-	snprintf(name, sizeof(name), "%s/2", dev->name);
-	pr_info("%s/2: ============  START LOG STATUS  ============\n",
-		dev->name);
-	cx25821_call_all(dev, core, log_status);
-	tmp = cx_read(sram_ch->dma_ctl);
-	pr_info("Video input 0 is %s\n",
-		(tmp & 0x11) ? "streaming" : "stopped");
-	pr_info("%s/2: =============  END LOG STATUS  =============\n",
-		dev->name);
-	return 0;
-}
-
-static int vidioc_s_ctrl(struct file *file, void *priv,
-			struct v4l2_control *ctl)
-{
-	struct cx25821_fh *fh = priv;
-	struct cx25821_dev *dev = ((struct cx25821_fh *)priv)->dev;
-	int err;
+	if (i != V4L2_BUF_TYPE_VIDEO_CAPTURE)
+		return -EINVAL;
 
-	if (fh) {
-		err = v4l2_prio_check(&dev->channels[fh->channel_id].prio,
-				      fh->prio);
-		if (0 != err)
-			return err;
-	}
+	if (chan->streaming_fh && chan->streaming_fh != priv)
+		return -EBUSY;
+	if (chan->streaming_fh == NULL)
+		return 0;
 
-	return cx25821_set_control(dev, ctl, fh->channel_id);
+	chan->streaming_fh = NULL;
+	return videobuf_streamoff(&chan->vidq);
 }
 
-/* VIDEO IOCTLS */
-int cx25821_vidioc_g_fmt_vid_cap(struct file *file, void *priv,
-				 struct v4l2_format *f)
+static int vidioc_dqbuf(struct file *file, void *priv, struct v4l2_buffer *p)
 {
-	struct cx25821_fh *fh = priv;
+	int ret_val = 0;
+	struct cx25821_channel *chan = video_drvdata(file);
 
-	f->fmt.pix.width = fh->width;
-	f->fmt.pix.height = fh->height;
-	f->fmt.pix.field = fh->vidq.field;
-	f->fmt.pix.pixelformat = fh->fmt->fourcc;
-	f->fmt.pix.bytesperline = (f->fmt.pix.width * fh->fmt->depth) >> 3;
-	f->fmt.pix.sizeimage = f->fmt.pix.height * f->fmt.pix.bytesperline;
+	ret_val = videobuf_dqbuf(&chan->vidq, p, file->f_flags & O_NONBLOCK);
+	p->sequence = chan->dma_vidq.count;
 
-	return 0;
+	return ret_val;
 }
 
-int cx25821_vidioc_try_fmt_vid_cap(struct file *file, void *priv,
-				   struct v4l2_format *f)
+static int vidioc_log_status(struct file *file, void *priv)
 {
-	struct cx25821_fmt *fmt;
-	enum v4l2_field field;
-	unsigned int maxw, maxh;
-
-	fmt = cx25821_format_by_fourcc(f->fmt.pix.pixelformat);
-	if (NULL == fmt)
-		return -EINVAL;
-
-	field = f->fmt.pix.field;
-	maxw = 720;
-	maxh = 576;
-
-	if (V4L2_FIELD_ANY == field) {
-		if (f->fmt.pix.height > maxh / 2)
-			field = V4L2_FIELD_INTERLACED;
-		else
-			field = V4L2_FIELD_TOP;
-	}
-
-	switch (field) {
-	case V4L2_FIELD_TOP:
-	case V4L2_FIELD_BOTTOM:
-		maxh = maxh / 2;
-		break;
-	case V4L2_FIELD_INTERLACED:
-		break;
-	default:
-		return -EINVAL;
-	}
-
-	f->fmt.pix.field = field;
-	if (f->fmt.pix.height < 32)
-		f->fmt.pix.height = 32;
-	if (f->fmt.pix.height > maxh)
-		f->fmt.pix.height = maxh;
-	if (f->fmt.pix.width < 48)
-		f->fmt.pix.width = 48;
-	if (f->fmt.pix.width > maxw)
-		f->fmt.pix.width = maxw;
-	f->fmt.pix.width &= ~0x03;
-	f->fmt.pix.bytesperline = (f->fmt.pix.width * fmt->depth) >> 3;
-	f->fmt.pix.sizeimage = f->fmt.pix.height * f->fmt.pix.bytesperline;
+	struct cx25821_channel *chan = video_drvdata(file);
+	struct cx25821_dev *dev = chan->dev;
+	const struct sram_channel *sram_ch = chan->sram_channels;
+	u32 tmp = 0;
 
+	tmp = cx_read(sram_ch->dma_ctl);
+	pr_info("Video input 0 is %s\n",
+		(tmp & 0x11) ? "streaming" : "stopped");
 	return 0;
 }
 
-int cx25821_vidioc_querycap(struct file *file, void *priv,
+
+static int cx25821_vidioc_querycap(struct file *file, void *priv,
 			    struct v4l2_capability *cap)
 {
-	struct cx25821_dev *dev = ((struct cx25821_fh *)priv)->dev;
+	struct cx25821_channel *chan = video_drvdata(file);
+	struct cx25821_dev *dev = chan->dev;
+	const u32 cap_input = V4L2_CAP_VIDEO_CAPTURE |
+			V4L2_CAP_READWRITE | V4L2_CAP_STREAMING;
+	const u32 cap_output = V4L2_CAP_VIDEO_OUTPUT | V4L2_CAP_READWRITE;
 
 	strcpy(cap->driver, "cx25821");
 	strlcpy(cap->card, cx25821_boards[dev->board].name, sizeof(cap->card));
 	sprintf(cap->bus_info, "PCIe:%s", pci_name(dev->pci));
-	cap->version = CX25821_VERSION_CODE;
-	cap->capabilities = V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_READWRITE |
-		V4L2_CAP_STREAMING;
-	if (UNSET != dev->tuner_type)
-		cap->capabilities |= V4L2_CAP_TUNER;
-	return 0;
-}
-
-int cx25821_vidioc_enum_fmt_vid_cap(struct file *file, void *priv,
-			    struct v4l2_fmtdesc *f)
-{
-	if (unlikely(f->index >= ARRAY_SIZE(formats)))
-		return -EINVAL;
-
-	strlcpy(f->description, formats[f->index].name, sizeof(f->description));
-	f->pixelformat = formats[f->index].fourcc;
-
+	if (chan->id >= VID_CHANNEL_NUM)
+		cap->device_caps = cap_output;
+	else
+		cap->device_caps = cap_input;
+	cap->capabilities = cap_input | cap_output | V4L2_CAP_DEVICE_CAPS;
 	return 0;
 }
 
-int cx25821_vidioc_reqbufs(struct file *file, void *priv,
+static int cx25821_vidioc_reqbufs(struct file *file, void *priv,
 			   struct v4l2_requestbuffers *p)
 {
-	struct cx25821_fh *fh = priv;
-	return videobuf_reqbufs(get_queue(fh), p);
+	struct cx25821_channel *chan = video_drvdata(file);
+
+	return videobuf_reqbufs(&chan->vidq, p);
 }
 
-int cx25821_vidioc_querybuf(struct file *file, void *priv,
+static int cx25821_vidioc_querybuf(struct file *file, void *priv,
 			    struct v4l2_buffer *p)
 {
-	struct cx25821_fh *fh = priv;
-	return videobuf_querybuf(get_queue(fh), p);
-}
+	struct cx25821_channel *chan = video_drvdata(file);
 
-int cx25821_vidioc_qbuf(struct file *file, void *priv, struct v4l2_buffer *p)
-{
-	struct cx25821_fh *fh = priv;
-	return videobuf_qbuf(get_queue(fh), p);
+	return videobuf_querybuf(&chan->vidq, p);
 }
 
-int cx25821_vidioc_g_priority(struct file *file, void *f, enum v4l2_priority *p)
+static int cx25821_vidioc_qbuf(struct file *file, void *priv, struct v4l2_buffer *p)
 {
-	struct cx25821_dev *dev = ((struct cx25821_fh *)f)->dev;
-	struct cx25821_fh *fh = f;
-
-	*p = v4l2_prio_max(&dev->channels[fh->channel_id].prio);
+	struct cx25821_channel *chan = video_drvdata(file);
 
-	return 0;
+	return videobuf_qbuf(&chan->vidq, p);
 }
 
-int cx25821_vidioc_s_priority(struct file *file, void *f,
-			      enum v4l2_priority prio)
+static int cx25821_vidioc_g_std(struct file *file, void *priv, v4l2_std_id *tvnorms)
 {
-	struct cx25821_fh *fh = f;
-	struct cx25821_dev *dev = ((struct cx25821_fh *)f)->dev;
+	struct cx25821_channel *chan = video_drvdata(file);
 
-	return v4l2_prio_change(&dev->channels[fh->channel_id].prio, &fh->prio,
-			prio);
+	*tvnorms = chan->dev->tvnorm;
+	return 0;
 }
 
-#ifdef TUNER_FLAG
 int cx25821_vidioc_s_std(struct file *file, void *priv, v4l2_std_id tvnorms)
 {
-	struct cx25821_fh *fh = priv;
-	struct cx25821_dev *dev = ((struct cx25821_fh *)priv)->dev;
-	int err;
-
-	dprintk(1, "%s()\n", __func__);
-
-	if (fh) {
-		err = v4l2_prio_check(&dev->channels[fh->channel_id].prio,
-				      fh->prio);
-		if (0 != err)
-			return err;
-	}
+	struct cx25821_channel *chan = video_drvdata(file);
+	struct cx25821_dev *dev = chan->dev;
 
 	if (dev->tvnorm == tvnorms)
 		return 0;
 
-	mutex_lock(&dev->lock);
-	cx25821_set_tvnorm(dev, tvnorms);
-	mutex_unlock(&dev->lock);
+	dev->tvnorm = tvnorms;
+	chan->width = 720;
+	chan->height = (dev->tvnorm & V4L2_STD_625_50) ? 576 : 480;
 
 	medusa_set_videostandard(dev);
 
 	return 0;
 }
-#endif
 
-int cx25821_enum_input(struct cx25821_dev *dev, struct v4l2_input *i)
+static int cx25821_vidioc_enum_input(struct file *file, void *priv,
+			      struct v4l2_input *i)
 {
-	static const char * const iname[] = {
-		[CX25821_VMUX_COMPOSITE] = "Composite",
-		[CX25821_VMUX_SVIDEO] = "S-Video",
-		[CX25821_VMUX_DEBUG] = "for debug only",
-	};
-	unsigned int n;
-	dprintk(1, "%s()\n", __func__);
-
-	n = i->index;
-	if (n >= 2)
-		return -EINVAL;
-
-	if (0 == INPUT(n)->type)
+	if (i->index)
 		return -EINVAL;
 
 	i->type = V4L2_INPUT_TYPE_CAMERA;
-	strcpy(i->name, iname[INPUT(n)->type]);
-
 	i->std = CX25821_NORMS;
+	strcpy(i->name, "Composite");
 	return 0;
 }
 
-int cx25821_vidioc_enum_input(struct file *file, void *priv,
-			      struct v4l2_input *i)
-{
-	struct cx25821_dev *dev = ((struct cx25821_fh *)priv)->dev;
-	dprintk(1, "%s()\n", __func__);
-	return cx25821_enum_input(dev, i);
-}
-
-int cx25821_vidioc_g_input(struct file *file, void *priv, unsigned int *i)
-{
-	struct cx25821_dev *dev = ((struct cx25821_fh *)priv)->dev;
-
-	*i = dev->input;
-	dprintk(1, "%s(): returns %d\n", __func__, *i);
-	return 0;
-}
-
-int cx25821_vidioc_s_input(struct file *file, void *priv, unsigned int i)
-{
-	struct cx25821_fh *fh = priv;
-	struct cx25821_dev *dev = ((struct cx25821_fh *)priv)->dev;
-	int err;
-
-	dprintk(1, "%s(%d)\n", __func__, i);
-
-	if (fh) {
-		err = v4l2_prio_check(&dev->channels[fh->channel_id].prio,
-				      fh->prio);
-		if (0 != err)
-			return err;
-	}
-
-	if (i >= CX25821_NR_INPUT) {
-		dprintk(1, "%s(): -EINVAL\n", __func__);
-		return -EINVAL;
-	}
-
-	mutex_lock(&dev->lock);
-	cx25821_video_mux(dev, i);
-	mutex_unlock(&dev->lock);
-	return 0;
-}
-
-#ifdef TUNER_FLAG
-int cx25821_vidioc_g_frequency(struct file *file, void *priv,
-			       struct v4l2_frequency *f)
-{
-	struct cx25821_fh *fh = priv;
-	struct cx25821_dev *dev = fh->dev;
-
-	f->frequency = dev->freq;
-
-	cx25821_call_all(dev, tuner, g_frequency, f);
-
-	return 0;
-}
-
-int cx25821_set_freq(struct cx25821_dev *dev, const struct v4l2_frequency *f)
-{
-	mutex_lock(&dev->lock);
-	dev->freq = f->frequency;
-
-	cx25821_call_all(dev, tuner, s_frequency, f);
-
-	/* When changing channels it is required to reset TVAUDIO */
-	msleep(10);
-
-	mutex_unlock(&dev->lock);
-
-	return 0;
-}
-
-int cx25821_vidioc_s_frequency(struct file *file, void *priv,
-			       const struct v4l2_frequency *f)
-{
-	struct cx25821_fh *fh = priv;
-	struct cx25821_dev *dev;
-	int err;
-
-	if (fh) {
-		dev = fh->dev;
-		err = v4l2_prio_check(&dev->channels[fh->channel_id].prio,
-				      fh->prio);
-		if (0 != err)
-			return err;
-	} else {
-		pr_err("Invalid fh pointer!\n");
-		return -EINVAL;
-	}
-
-	return cx25821_set_freq(dev, f);
-}
-#endif
-
-#ifdef CONFIG_VIDEO_ADV_DEBUG
-int cx25821_vidioc_g_register(struct file *file, void *fh,
-		      struct v4l2_dbg_register *reg)
-{
-	struct cx25821_dev *dev = ((struct cx25821_fh *)fh)->dev;
-
-	if (!v4l2_chip_match_host(&reg->match))
-		return -EINVAL;
-
-	cx25821_call_all(dev, core, g_register, reg);
-
-	return 0;
-}
-
-int cx25821_vidioc_s_register(struct file *file, void *fh,
-		      const struct v4l2_dbg_register *reg)
-{
-	struct cx25821_dev *dev = ((struct cx25821_fh *)fh)->dev;
-
-	if (!v4l2_chip_match_host(&reg->match))
-		return -EINVAL;
-
-	cx25821_call_all(dev, core, s_register, reg);
-
-	return 0;
-}
-
-#endif
-
-#ifdef TUNER_FLAG
-int cx25821_vidioc_g_tuner(struct file *file, void *priv, struct v4l2_tuner *t)
-{
-	struct cx25821_dev *dev = ((struct cx25821_fh *)priv)->dev;
-
-	if (unlikely(UNSET == dev->tuner_type))
-		return -EINVAL;
-	if (0 != t->index)
-		return -EINVAL;
-
-	strcpy(t->name, "Television");
-	t->type = V4L2_TUNER_ANALOG_TV;
-	t->capability = V4L2_TUNER_CAP_NORM;
-	t->rangehigh = 0xffffffffUL;
-
-	t->signal = 0xffff;	/* LOCKED */
-	return 0;
-}
-
-int cx25821_vidioc_s_tuner(struct file *file, void *priv, const struct v4l2_tuner *t)
-{
-	struct cx25821_dev *dev = ((struct cx25821_fh *)priv)->dev;
-	struct cx25821_fh *fh = priv;
-	int err;
-
-	if (fh) {
-		err = v4l2_prio_check(&dev->channels[fh->channel_id].prio,
-				      fh->prio);
-		if (0 != err)
-			return err;
-	}
-
-	dprintk(1, "%s()\n", __func__);
-	if (UNSET == dev->tuner_type)
-		return -EINVAL;
-	if (0 != t->index)
-		return -EINVAL;
-
-	return 0;
-}
-
-#endif
-/*****************************************************************************/
-static const struct v4l2_queryctrl no_ctl = {
-	.name = "42",
-	.flags = V4L2_CTRL_FLAG_DISABLED,
-};
-
-static struct v4l2_queryctrl cx25821_ctls[] = {
-	/* --- video --- */
-	{
-		.id = V4L2_CID_BRIGHTNESS,
-		.name = "Brightness",
-		.minimum = 0,
-		.maximum = 10000,
-		.step = 1,
-		.default_value = 6200,
-		.type = V4L2_CTRL_TYPE_INTEGER,
-	}, {
-		.id = V4L2_CID_CONTRAST,
-		.name = "Contrast",
-		.minimum = 0,
-		.maximum = 10000,
-		.step = 1,
-		.default_value = 5000,
-		.type = V4L2_CTRL_TYPE_INTEGER,
-	}, {
-		.id = V4L2_CID_SATURATION,
-		.name = "Saturation",
-		.minimum = 0,
-		.maximum = 10000,
-		.step = 1,
-		.default_value = 5000,
-		.type = V4L2_CTRL_TYPE_INTEGER,
-	}, {
-		.id = V4L2_CID_HUE,
-		.name = "Hue",
-		.minimum = 0,
-		.maximum = 10000,
-		.step = 1,
-		.default_value = 5000,
-		.type = V4L2_CTRL_TYPE_INTEGER,
-	}
-};
-static const int CX25821_CTLS = ARRAY_SIZE(cx25821_ctls);
-
-static int cx25821_ctrl_query(struct v4l2_queryctrl *qctrl)
+static int cx25821_vidioc_g_input(struct file *file, void *priv, unsigned int *i)
 {
-	int i;
-
-	if (qctrl->id < V4L2_CID_BASE || qctrl->id >= V4L2_CID_LASTP1)
-		return -EINVAL;
-	for (i = 0; i < CX25821_CTLS; i++)
-		if (cx25821_ctls[i].id == qctrl->id)
-			break;
-	if (i == CX25821_CTLS) {
-		*qctrl = no_ctl;
-		return 0;
-	}
-	*qctrl = cx25821_ctls[i];
+	*i = 0;
 	return 0;
 }
 
-int cx25821_vidioc_queryctrl(struct file *file, void *priv,
-		     struct v4l2_queryctrl *qctrl)
-{
-	return cx25821_ctrl_query(qctrl);
-}
-
-/* ------------------------------------------------------------------ */
-/* VIDEO CTRL IOCTLS                                                  */
-
-static const struct v4l2_queryctrl *ctrl_by_id(unsigned int id)
+static int cx25821_vidioc_s_input(struct file *file, void *priv, unsigned int i)
 {
-	unsigned int i;
-
-	for (i = 0; i < CX25821_CTLS; i++)
-		if (cx25821_ctls[i].id == id)
-			return cx25821_ctls + i;
-	return NULL;
+	return i ? -EINVAL : 0;
 }
 
-int cx25821_vidioc_g_ctrl(struct file *file, void *priv,
-			  struct v4l2_control *ctl)
+static int cx25821_s_ctrl(struct v4l2_ctrl *ctrl)
 {
-	struct cx25821_dev *dev = ((struct cx25821_fh *)priv)->dev;
-	struct cx25821_fh *fh = priv;
+	struct cx25821_channel *chan =
+		container_of(ctrl->handler, struct cx25821_channel, hdl);
+	struct cx25821_dev *dev = chan->dev;
 
-	const struct v4l2_queryctrl *ctrl;
-
-	ctrl = ctrl_by_id(ctl->id);
-
-	if (NULL == ctrl)
-		return -EINVAL;
-	switch (ctl->id) {
+	switch (ctrl->id) {
 	case V4L2_CID_BRIGHTNESS:
-		ctl->value = dev->channels[fh->channel_id].ctl_bright;
+		medusa_set_brightness(dev, ctrl->val, chan->id);
 		break;
 	case V4L2_CID_HUE:
-		ctl->value = dev->channels[fh->channel_id].ctl_hue;
+		medusa_set_hue(dev, ctrl->val, chan->id);
 		break;
 	case V4L2_CID_CONTRAST:
-		ctl->value = dev->channels[fh->channel_id].ctl_contrast;
+		medusa_set_contrast(dev, ctrl->val, chan->id);
 		break;
 	case V4L2_CID_SATURATION:
-		ctl->value = dev->channels[fh->channel_id].ctl_saturation;
-		break;
-	}
-	return 0;
-}
-
-int cx25821_set_control(struct cx25821_dev *dev,
-			struct v4l2_control *ctl, int chan_num)
-{
-	int err;
-	const struct v4l2_queryctrl *ctrl;
-
-	err = -EINVAL;
-
-	ctrl = ctrl_by_id(ctl->id);
-
-	if (NULL == ctrl)
-		return err;
-
-	switch (ctrl->type) {
-	case V4L2_CTRL_TYPE_BOOLEAN:
-	case V4L2_CTRL_TYPE_MENU:
-	case V4L2_CTRL_TYPE_INTEGER:
-		if (ctl->value < ctrl->minimum)
-			ctl->value = ctrl->minimum;
-		if (ctl->value > ctrl->maximum)
-			ctl->value = ctrl->maximum;
+		medusa_set_saturation(dev, ctrl->val, chan->id);
 		break;
 	default:
-		/* nothing */ ;
-	}
-
-	switch (ctl->id) {
-	case V4L2_CID_BRIGHTNESS:
-		dev->channels[chan_num].ctl_bright = ctl->value;
-		medusa_set_brightness(dev, ctl->value, chan_num);
-		break;
-	case V4L2_CID_HUE:
-		dev->channels[chan_num].ctl_hue = ctl->value;
-		medusa_set_hue(dev, ctl->value, chan_num);
-		break;
-	case V4L2_CID_CONTRAST:
-		dev->channels[chan_num].ctl_contrast = ctl->value;
-		medusa_set_contrast(dev, ctl->value, chan_num);
-		break;
-	case V4L2_CID_SATURATION:
-		dev->channels[chan_num].ctl_saturation = ctl->value;
-		medusa_set_saturation(dev, ctl->value, chan_num);
-		break;
-	}
-
-	err = 0;
-
-	return err;
-}
-
-static void cx25821_init_controls(struct cx25821_dev *dev, int chan_num)
-{
-	struct v4l2_control ctrl;
-	int i;
-	for (i = 0; i < CX25821_CTLS; i++) {
-		ctrl.id = cx25821_ctls[i].id;
-		ctrl.value = cx25821_ctls[i].default_value;
-
-		cx25821_set_control(dev, &ctrl, chan_num);
-	}
-}
-
-int cx25821_vidioc_cropcap(struct file *file, void *priv,
-			   struct v4l2_cropcap *cropcap)
-{
-	struct cx25821_dev *dev = ((struct cx25821_fh *)priv)->dev;
-
-	if (cropcap->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
 		return -EINVAL;
-	cropcap->bounds.top = 0;
-	cropcap->bounds.left = 0;
-	cropcap->bounds.width = 720;
-	cropcap->bounds.height = dev->tvnorm == V4L2_STD_PAL_BG ? 576 : 480;
-	cropcap->pixelaspect.numerator =
-		dev->tvnorm == V4L2_STD_PAL_BG ? 59 : 10;
-	cropcap->pixelaspect.denominator =
-		dev->tvnorm == V4L2_STD_PAL_BG ? 54 : 11;
-	cropcap->defrect = cropcap->bounds;
-	return 0;
-}
-
-int cx25821_vidioc_s_crop(struct file *file, void *priv, const struct v4l2_crop *crop)
-{
-	struct cx25821_dev *dev = ((struct cx25821_fh *)priv)->dev;
-	struct cx25821_fh *fh = priv;
-	int err;
-
-	if (fh) {
-		err = v4l2_prio_check(&dev->channels[fh->channel_id].prio,
-				      fh->prio);
-		if (0 != err)
-			return err;
 	}
-	/* cx25821_vidioc_s_crop not supported */
-	return -EINVAL;
-}
-
-int cx25821_vidioc_g_crop(struct file *file, void *priv, struct v4l2_crop *crop)
-{
-	/* cx25821_vidioc_g_crop not supported */
-	return -EINVAL;
+	return 0;
 }
 
-int cx25821_vidioc_querystd(struct file *file, void *priv, v4l2_std_id * norm)
+static int cx25821_vidioc_enum_output(struct file *file, void *priv,
+			      struct v4l2_output *o)
 {
-	/* medusa does not support video standard sensing of current input */
-	*norm = CX25821_NORMS;
+	if (o->index)
+		return -EINVAL;
 
+	o->type = V4L2_INPUT_TYPE_CAMERA;
+	o->std = CX25821_NORMS;
+	strcpy(o->name, "Composite");
 	return 0;
 }
 
-int cx25821_is_valid_width(u32 width, v4l2_std_id tvnorm)
+static int cx25821_vidioc_g_output(struct file *file, void *priv, unsigned int *o)
 {
-	if (tvnorm == V4L2_STD_PAL_BG) {
-		if (width == 352 || width == 720)
-			return 1;
-		else
-			return 0;
-	}
-
-	if (tvnorm == V4L2_STD_NTSC_M) {
-		if (width == 320 || width == 352 || width == 720)
-			return 1;
-		else
-			return 0;
-	}
+	*o = 0;
 	return 0;
 }
 
-int cx25821_is_valid_height(u32 height, v4l2_std_id tvnorm)
+static int cx25821_vidioc_s_output(struct file *file, void *priv, unsigned int o)
 {
-	if (tvnorm == V4L2_STD_PAL_BG) {
-		if (height == 576 || height == 288)
-			return 1;
-		else
-			return 0;
-	}
-
-	if (tvnorm == V4L2_STD_NTSC_M) {
-		if (height == 480 || height == 240)
-			return 1;
-		else
-			return 0;
-	}
-
-	return 0;
+	return o ? -EINVAL : 0;
 }
 
-static long video_ioctl_upstream9(struct file *file, unsigned int cmd,
-				 unsigned long arg)
+static int cx25821_vidioc_try_fmt_vid_out(struct file *file, void *priv,
+				   struct v4l2_format *f)
 {
-	struct cx25821_fh *fh = file->private_data;
-	struct cx25821_dev *dev = fh->dev;
-	int command = 0;
-	struct upstream_user_struct *data_from_user;
-
-	data_from_user = (struct upstream_user_struct *)arg;
-
-	if (!data_from_user) {
-		pr_err("%s(): Upstream data is INVALID. Returning\n", __func__);
-		return 0;
-	}
-
-	command = data_from_user->command;
-
-	if (command != UPSTREAM_START_VIDEO && command != UPSTREAM_STOP_VIDEO)
-		return 0;
-
-	dev->input_filename = data_from_user->input_filename;
-	dev->input_audiofilename = data_from_user->input_filename;
-	dev->vid_stdname = data_from_user->vid_stdname;
-	dev->pixel_format = data_from_user->pixel_format;
-	dev->channel_select = data_from_user->channel_select;
-	dev->command = data_from_user->command;
-
-	switch (command) {
-	case UPSTREAM_START_VIDEO:
-		cx25821_start_upstream_video_ch1(dev, data_from_user);
-		break;
-
-	case UPSTREAM_STOP_VIDEO:
-		cx25821_stop_upstream_video_ch1(dev);
-		break;
-	}
+	struct cx25821_channel *chan = video_drvdata(file);
+	struct cx25821_dev *dev = chan->dev;
+	const struct cx25821_fmt *fmt;
 
+	fmt = cx25821_format_by_fourcc(f->fmt.pix.pixelformat);
+	if (NULL == fmt)
+		return -EINVAL;
+	f->fmt.pix.width = 720;
+	f->fmt.pix.height = (dev->tvnorm & V4L2_STD_625_50) ? 576 : 480;
+	f->fmt.pix.field = V4L2_FIELD_INTERLACED;
+	f->fmt.pix.bytesperline = (f->fmt.pix.width * fmt->depth) >> 3;
+	f->fmt.pix.sizeimage = f->fmt.pix.height * f->fmt.pix.bytesperline;
+	f->fmt.pix.colorspace = V4L2_COLORSPACE_SMPTE170M;
+	f->fmt.pix.priv = 0;
 	return 0;
 }
 
-static long video_ioctl_upstream10(struct file *file, unsigned int cmd,
-				  unsigned long arg)
+static int vidioc_s_fmt_vid_out(struct file *file, void *priv,
+				struct v4l2_format *f)
 {
-	struct cx25821_fh *fh = file->private_data;
-	struct cx25821_dev *dev = fh->dev;
-	int command = 0;
-	struct upstream_user_struct *data_from_user;
-
-	data_from_user = (struct upstream_user_struct *)arg;
-
-	if (!data_from_user) {
-		pr_err("%s(): Upstream data is INVALID. Returning\n", __func__);
-		return 0;
-	}
-
-	command = data_from_user->command;
-
-	if (command != UPSTREAM_START_VIDEO && command != UPSTREAM_STOP_VIDEO)
-		return 0;
-
-	dev->input_filename_ch2 = data_from_user->input_filename;
-	dev->input_audiofilename = data_from_user->input_filename;
-	dev->vid_stdname_ch2 = data_from_user->vid_stdname;
-	dev->pixel_format_ch2 = data_from_user->pixel_format;
-	dev->channel_select_ch2 = data_from_user->channel_select;
-	dev->command_ch2 = data_from_user->command;
+	struct cx25821_channel *chan = video_drvdata(file);
+	int err;
 
-	switch (command) {
-	case UPSTREAM_START_VIDEO:
-		cx25821_start_upstream_video_ch2(dev, data_from_user);
-		break;
+	err = cx25821_vidioc_try_fmt_vid_out(file, priv, f);
 
-	case UPSTREAM_STOP_VIDEO:
-		cx25821_stop_upstream_video_ch2(dev);
-		break;
-	}
+	if (0 != err)
+		return err;
 
+	chan->fmt = cx25821_format_by_fourcc(f->fmt.pix.pixelformat);
+	chan->vidq.field = f->fmt.pix.field;
+	chan->width = f->fmt.pix.width;
+	chan->height = f->fmt.pix.height;
+	if (f->fmt.pix.pixelformat == V4L2_PIX_FMT_Y41P)
+		chan->pixel_formats = PIXEL_FRMT_411;
+	else
+		chan->pixel_formats = PIXEL_FRMT_422;
 	return 0;
 }
 
-static long video_ioctl_upstream11(struct file *file, unsigned int cmd,
-				  unsigned long arg)
+static ssize_t video_write(struct file *file, const char __user *data, size_t count,
+			 loff_t *ppos)
 {
-	struct cx25821_fh *fh = file->private_data;
-	struct cx25821_dev *dev = fh->dev;
-	int command = 0;
-	struct upstream_user_struct *data_from_user;
-
-	data_from_user = (struct upstream_user_struct *)arg;
+	struct cx25821_channel *chan = video_drvdata(file);
+	struct cx25821_dev *dev = chan->dev;
+	struct v4l2_fh *fh = file->private_data;
+	int err = 0;
 
-	if (!data_from_user) {
-		pr_err("%s(): Upstream data is INVALID. Returning\n", __func__);
-		return 0;
+	if (mutex_lock_interruptible(&dev->lock))
+		return -ERESTARTSYS;
+	if (chan->streaming_fh && chan->streaming_fh != fh) {
+		err = -EBUSY;
+		goto unlock;
 	}
-
-	command = data_from_user->command;
-
-	if (command != UPSTREAM_START_AUDIO && command != UPSTREAM_STOP_AUDIO)
-		return 0;
-
-	dev->input_filename = data_from_user->input_filename;
-	dev->input_audiofilename = data_from_user->input_filename;
-	dev->vid_stdname = data_from_user->vid_stdname;
-	dev->pixel_format = data_from_user->pixel_format;
-	dev->channel_select = data_from_user->channel_select;
-	dev->command = data_from_user->command;
-
-	switch (command) {
-	case UPSTREAM_START_AUDIO:
-		cx25821_start_upstream_audio(dev, data_from_user);
-		break;
-
-	case UPSTREAM_STOP_AUDIO:
-		cx25821_stop_upstream_audio(dev);
-		break;
+	if (!chan->streaming_fh) {
+		err = cx25821_vidupstream_init(chan, chan->pixel_formats);
+		if (err)
+			goto unlock;
+		chan->streaming_fh = fh;
 	}
 
-	return 0;
+	err = cx25821_write_frame(chan, data, count);
+	count -= err;
+	*ppos += err;
+
+unlock:
+	mutex_unlock(&dev->lock);
+	return err;
 }
 
-static long video_ioctl_set(struct file *file, unsigned int cmd,
-			   unsigned long arg)
+static int video_out_release(struct file *file)
 {
-	struct cx25821_fh *fh = file->private_data;
-	struct cx25821_dev *dev = fh->dev;
-	struct downstream_user_struct *data_from_user;
-	int command;
-	int width = 720;
-	int selected_channel = 0;
-	int pix_format = 0;
-	int i = 0;
-	int cif_enable = 0;
-	int cif_width = 0;
-
-	data_from_user = (struct downstream_user_struct *)arg;
-
-	if (!data_from_user) {
-		pr_err("%s(): User data is INVALID. Returning\n", __func__);
-		return 0;
-	}
-
-	command = data_from_user->command;
-
-	if (command != SET_VIDEO_STD && command != SET_PIXEL_FORMAT
-	   && command != ENABLE_CIF_RESOLUTION && command != REG_READ
-	   && command != REG_WRITE && command != MEDUSA_READ
-	   && command != MEDUSA_WRITE) {
-		return 0;
-	}
-
-	switch (command) {
-	case SET_VIDEO_STD:
-		if (!strcmp(data_from_user->vid_stdname, "PAL"))
-			dev->tvnorm = V4L2_STD_PAL_BG;
-		else
-			dev->tvnorm = V4L2_STD_NTSC_M;
-		medusa_set_videostandard(dev);
-		break;
-
-	case SET_PIXEL_FORMAT:
-		selected_channel = data_from_user->decoder_select;
-		pix_format = data_from_user->pixel_format;
-
-		if (!(selected_channel <= 7 && selected_channel >= 0)) {
-			selected_channel -= 4;
-			selected_channel = selected_channel % 8;
-		}
-
-		if (selected_channel >= 0)
-			cx25821_set_pixel_format(dev, selected_channel,
-						pix_format);
-
-		break;
-
-	case ENABLE_CIF_RESOLUTION:
-		selected_channel = data_from_user->decoder_select;
-		cif_enable = data_from_user->cif_resolution_enable;
-		cif_width = data_from_user->cif_width;
-
-		if (cif_enable) {
-			if (dev->tvnorm & V4L2_STD_PAL_BG
-			    || dev->tvnorm & V4L2_STD_PAL_DK) {
-				width = 352;
-			} else {
-				width = cif_width;
-				if (cif_width != 320 && cif_width != 352)
-					width = 320;
-			}
-		}
-
-		if (!(selected_channel <= 7 && selected_channel >= 0)) {
-			selected_channel -= 4;
-			selected_channel = selected_channel % 8;
-		}
-
-		if (selected_channel <= 7 && selected_channel >= 0) {
-			dev->channels[selected_channel].use_cif_resolution =
-				cif_enable;
-			dev->channels[selected_channel].cif_width = width;
-		} else {
-			for (i = 0; i < VID_CHANNEL_NUM; i++) {
-				dev->channels[i].use_cif_resolution =
-					cif_enable;
-				dev->channels[i].cif_width = width;
-			}
-		}
+	struct cx25821_channel *chan = video_drvdata(file);
+	struct cx25821_dev *dev = chan->dev;
+	struct v4l2_fh *fh = file->private_data;
 
-		medusa_set_resolution(dev, width, selected_channel);
-		break;
-	case REG_READ:
-		data_from_user->reg_data = cx_read(data_from_user->reg_address);
-		break;
-	case REG_WRITE:
-		cx_write(data_from_user->reg_address, data_from_user->reg_data);
-		break;
-	case MEDUSA_READ:
-		cx25821_i2c_read(&dev->i2c_bus[0],
-					 (u16) data_from_user->reg_address,
-					 &data_from_user->reg_data);
-		break;
-	case MEDUSA_WRITE:
-		cx25821_i2c_write(&dev->i2c_bus[0],
-				  (u16) data_from_user->reg_address,
-				  data_from_user->reg_data);
-		break;
+	mutex_lock(&dev->lock);
+	if (chan->streaming_fh == fh) {
+		cx25821_stop_upstream_video(chan);
+		chan->streaming_fh = NULL;
 	}
+	mutex_unlock(&dev->lock);
 
-	return 0;
+	return v4l2_fh_release(file);
 }
 
-static long cx25821_video_ioctl(struct file *file,
-				unsigned int cmd, unsigned long arg)
-{
-	int ret = 0;
-
-	struct cx25821_fh *fh = file->private_data;
-
-	/* check to see if it's the video upstream */
-	if (fh->channel_id == SRAM_CH09) {
-		ret = video_ioctl_upstream9(file, cmd, arg);
-		return ret;
-	} else if (fh->channel_id == SRAM_CH10) {
-		ret = video_ioctl_upstream10(file, cmd, arg);
-		return ret;
-	} else if (fh->channel_id == SRAM_CH11) {
-		ret = video_ioctl_upstream11(file, cmd, arg);
-		ret = video_ioctl_set(file, cmd, arg);
-		return ret;
-	}
-
-	return video_ioctl2(file, cmd, arg);
-}
+static const struct v4l2_ctrl_ops cx25821_ctrl_ops = {
+	.s_ctrl = cx25821_s_ctrl,
+};
 
-/* exported stuff */
 static const struct v4l2_file_operations video_fops = {
 	.owner = THIS_MODULE,
-	.open = video_open,
+	.open = v4l2_fh_open,
 	.release = video_release,
 	.read = video_read,
 	.poll = video_poll,
 	.mmap = cx25821_video_mmap,
-	.ioctl = cx25821_video_ioctl,
+	.unlocked_ioctl = video_ioctl2,
 };
 
 static const struct v4l2_ioctl_ops video_ioctl_ops = {
@@ -1951,40 +963,170 @@ static const struct v4l2_ioctl_ops video_ioctl_ops = {
 	.vidioc_querybuf = cx25821_vidioc_querybuf,
 	.vidioc_qbuf = cx25821_vidioc_qbuf,
 	.vidioc_dqbuf = vidioc_dqbuf,
-#ifdef TUNER_FLAG
+	.vidioc_g_std = cx25821_vidioc_g_std,
 	.vidioc_s_std = cx25821_vidioc_s_std,
-	.vidioc_querystd = cx25821_vidioc_querystd,
-#endif
-	.vidioc_cropcap = cx25821_vidioc_cropcap,
-	.vidioc_s_crop = cx25821_vidioc_s_crop,
-	.vidioc_g_crop = cx25821_vidioc_g_crop,
 	.vidioc_enum_input = cx25821_vidioc_enum_input,
 	.vidioc_g_input = cx25821_vidioc_g_input,
 	.vidioc_s_input = cx25821_vidioc_s_input,
-	.vidioc_g_ctrl = cx25821_vidioc_g_ctrl,
-	.vidioc_s_ctrl = vidioc_s_ctrl,
-	.vidioc_queryctrl = cx25821_vidioc_queryctrl,
 	.vidioc_streamon = vidioc_streamon,
 	.vidioc_streamoff = vidioc_streamoff,
 	.vidioc_log_status = vidioc_log_status,
-	.vidioc_g_priority = cx25821_vidioc_g_priority,
-	.vidioc_s_priority = cx25821_vidioc_s_priority,
-#ifdef TUNER_FLAG
-	.vidioc_g_tuner = cx25821_vidioc_g_tuner,
-	.vidioc_s_tuner = cx25821_vidioc_s_tuner,
-	.vidioc_g_frequency = cx25821_vidioc_g_frequency,
-	.vidioc_s_frequency = cx25821_vidioc_s_frequency,
-#endif
-#ifdef CONFIG_VIDEO_ADV_DEBUG
-	.vidioc_g_register = cx25821_vidioc_g_register,
-	.vidioc_s_register = cx25821_vidioc_s_register,
-#endif
+	.vidioc_subscribe_event = v4l2_ctrl_subscribe_event,
+	.vidioc_unsubscribe_event = v4l2_event_unsubscribe,
 };
 
-struct video_device cx25821_videoioctl_template = {
-	.name = "cx25821-videoioctl",
+static const struct video_device cx25821_video_device = {
+	.name = "cx25821-video",
 	.fops = &video_fops,
+	.release = video_device_release_empty,
+	.minor = -1,
 	.ioctl_ops = &video_ioctl_ops,
 	.tvnorms = CX25821_NORMS,
-	.current_norm = V4L2_STD_NTSC_M,
 };
+
+static const struct v4l2_file_operations video_out_fops = {
+	.owner = THIS_MODULE,
+	.open = v4l2_fh_open,
+	.write = video_write,
+	.release = video_out_release,
+	.unlocked_ioctl = video_ioctl2,
+};
+
+static const struct v4l2_ioctl_ops video_out_ioctl_ops = {
+	.vidioc_querycap = cx25821_vidioc_querycap,
+	.vidioc_enum_fmt_vid_out = cx25821_vidioc_enum_fmt_vid_cap,
+	.vidioc_g_fmt_vid_out = cx25821_vidioc_g_fmt_vid_cap,
+	.vidioc_try_fmt_vid_out = cx25821_vidioc_try_fmt_vid_out,
+	.vidioc_s_fmt_vid_out = vidioc_s_fmt_vid_out,
+	.vidioc_g_std = cx25821_vidioc_g_std,
+	.vidioc_s_std = cx25821_vidioc_s_std,
+	.vidioc_enum_output = cx25821_vidioc_enum_output,
+	.vidioc_g_output = cx25821_vidioc_g_output,
+	.vidioc_s_output = cx25821_vidioc_s_output,
+	.vidioc_log_status = vidioc_log_status,
+};
+
+static const struct video_device cx25821_video_out_device = {
+	.name = "cx25821-video",
+	.fops = &video_out_fops,
+	.release = video_device_release_empty,
+	.minor = -1,
+	.ioctl_ops = &video_out_ioctl_ops,
+	.tvnorms = CX25821_NORMS,
+};
+
+void cx25821_video_unregister(struct cx25821_dev *dev, int chan_num)
+{
+	cx_clear(PCI_INT_MSK, 1);
+
+	if (video_is_registered(&dev->channels[chan_num].vdev)) {
+		video_unregister_device(&dev->channels[chan_num].vdev);
+		v4l2_ctrl_handler_free(&dev->channels[chan_num].hdl);
+
+		btcx_riscmem_free(dev->pci,
+				&dev->channels[chan_num].dma_vidq.stopper);
+	}
+}
+
+int cx25821_video_register(struct cx25821_dev *dev)
+{
+	int err;
+	int i;
+
+	/* initial device configuration */
+	dev->tvnorm = V4L2_STD_NTSC_M;
+
+	spin_lock_init(&dev->slock);
+
+	for (i = 0; i < MAX_VID_CHANNEL_NUM - 1; ++i) {
+		struct cx25821_channel *chan = &dev->channels[i];
+		struct video_device *vdev = &chan->vdev;
+		struct v4l2_ctrl_handler *hdl = &chan->hdl;
+		bool is_output = i > SRAM_CH08;
+
+		if (i == SRAM_CH08) /* audio channel */
+			continue;
+
+		if (!is_output) {
+			v4l2_ctrl_handler_init(hdl, 4);
+			v4l2_ctrl_new_std(hdl, &cx25821_ctrl_ops,
+					V4L2_CID_BRIGHTNESS, 0, 10000, 1, 6200);
+			v4l2_ctrl_new_std(hdl, &cx25821_ctrl_ops,
+					V4L2_CID_CONTRAST, 0, 10000, 1, 5000);
+			v4l2_ctrl_new_std(hdl, &cx25821_ctrl_ops,
+					V4L2_CID_SATURATION, 0, 10000, 1, 5000);
+			v4l2_ctrl_new_std(hdl, &cx25821_ctrl_ops,
+					V4L2_CID_HUE, 0, 10000, 1, 5000);
+			if (hdl->error) {
+				err = hdl->error;
+				goto fail_unreg;
+			}
+			err = v4l2_ctrl_handler_setup(hdl);
+			if (err)
+				goto fail_unreg;
+		} else {
+			chan->out = &dev->vid_out_data[i - SRAM_CH09];
+			chan->out->chan = chan;
+		}
+
+		cx25821_risc_stopper(dev->pci, &chan->dma_vidq.stopper,
+			chan->sram_channels->dma_ctl, 0x11, 0);
+
+		chan->sram_channels = &cx25821_sram_channels[i];
+		chan->width = 720;
+		if (dev->tvnorm & V4L2_STD_625_50)
+			chan->height = 576;
+		else
+			chan->height = 480;
+
+		if (chan->pixel_formats == PIXEL_FRMT_411)
+			chan->fmt = cx25821_format_by_fourcc(V4L2_PIX_FMT_Y41P);
+		else
+			chan->fmt = cx25821_format_by_fourcc(V4L2_PIX_FMT_YUYV);
+
+		cx_write(chan->sram_channels->int_stat, 0xffffffff);
+
+		INIT_LIST_HEAD(&chan->dma_vidq.active);
+		INIT_LIST_HEAD(&chan->dma_vidq.queued);
+
+		chan->timeout_data.dev = dev;
+		chan->timeout_data.channel = &cx25821_sram_channels[i];
+		chan->dma_vidq.timeout.function = cx25821_vid_timeout;
+		chan->dma_vidq.timeout.data = (unsigned long)&chan->timeout_data;
+		init_timer(&chan->dma_vidq.timeout);
+
+		if (!is_output)
+			videobuf_queue_sg_init(&chan->vidq, &cx25821_video_qops, &dev->pci->dev,
+				&dev->slock, V4L2_BUF_TYPE_VIDEO_CAPTURE,
+				V4L2_FIELD_INTERLACED, sizeof(struct cx25821_buffer),
+				chan, &dev->lock);
+
+		/* register v4l devices */
+		*vdev = is_output ? cx25821_video_out_device : cx25821_video_device;
+		vdev->v4l2_dev = &dev->v4l2_dev;
+		if (!is_output)
+			vdev->ctrl_handler = hdl;
+		else
+			vdev->vfl_dir = VFL_DIR_TX;
+		vdev->lock = &dev->lock;
+		set_bit(V4L2_FL_USE_FH_PRIO, &vdev->flags);
+		snprintf(vdev->name, sizeof(vdev->name), "%s #%d", dev->name, i);
+		video_set_drvdata(vdev, chan);
+
+		err = video_register_device(vdev, VFL_TYPE_GRABBER,
+					    video_nr[dev->nr]);
+
+		if (err < 0)
+			goto fail_unreg;
+	}
+
+	/* set PCI interrupt */
+	cx_set(PCI_INT_MSK, 0xff);
+
+	return 0;
+
+fail_unreg:
+	while (i >= 0)
+		cx25821_video_unregister(dev, i--);
+	return err;
+}
diff --git a/drivers/media/pci/cx25821/cx25821-video.h b/drivers/media/pci/cx25821/cx25821-video.h
index 11ba5eb93677..ab63b3858acf 100644
--- a/drivers/media/pci/cx25821/cx25821-video.h
+++ b/drivers/media/pci/cx25821/cx25821-video.h
@@ -39,8 +39,7 @@
 #include "cx25821.h"
 #include <media/v4l2-common.h>
 #include <media/v4l2-ioctl.h>
-
-#define TUNER_FLAG
+#include <media/v4l2-event.h>
 
 #define VIDEO_DEBUG 0
 
@@ -50,137 +49,17 @@ do {									\
 		printk(KERN_DEBUG "%s/0: " fmt, dev->name, ##arg);	\
 } while (0)
 
-/* For IOCTL to identify running upstream */
-#define UPSTREAM_START_VIDEO        700
-#define UPSTREAM_STOP_VIDEO         701
-#define UPSTREAM_START_AUDIO        702
-#define UPSTREAM_STOP_AUDIO         703
-#define UPSTREAM_DUMP_REGISTERS     702
-#define SET_VIDEO_STD               800
-#define SET_PIXEL_FORMAT            1000
-#define ENABLE_CIF_RESOLUTION       1001
-
-#define REG_READ		    900
-#define REG_WRITE		    901
-#define MEDUSA_READ		    910
-#define MEDUSA_WRITE		    911
-
-extern struct sram_channel *channel0;
-extern struct sram_channel *channel1;
-extern struct sram_channel *channel2;
-extern struct sram_channel *channel3;
-extern struct sram_channel *channel4;
-extern struct sram_channel *channel5;
-extern struct sram_channel *channel6;
-extern struct sram_channel *channel7;
-extern struct sram_channel *channel9;
-extern struct sram_channel *channel10;
-extern struct sram_channel *channel11;
-extern struct video_device cx25821_videoioctl_template;
-/* extern const u32 *ctrl_classes[]; */
-
-extern unsigned int vid_limit;
-
 #define FORMAT_FLAGS_PACKED       0x01
-extern struct cx25821_fmt formats[];
-extern struct cx25821_fmt *cx25821_format_by_fourcc(unsigned int fourcc);
-extern struct cx25821_data timeout_data[MAX_VID_CHANNEL_NUM];
-
 extern void cx25821_video_wakeup(struct cx25821_dev *dev,
 				 struct cx25821_dmaqueue *q, u32 count);
 
-#ifdef TUNER_FLAG
-extern int cx25821_set_tvnorm(struct cx25821_dev *dev, v4l2_std_id norm);
-#endif
-
-extern int cx25821_res_get(struct cx25821_dev *dev, struct cx25821_fh *fh,
-			   unsigned int bit);
-extern int cx25821_res_check(struct cx25821_fh *fh, unsigned int bit);
-extern int cx25821_res_locked(struct cx25821_fh *fh, unsigned int bit);
-extern void cx25821_res_free(struct cx25821_dev *dev, struct cx25821_fh *fh,
-			     unsigned int bits);
-extern int cx25821_video_mux(struct cx25821_dev *dev, unsigned int input);
 extern int cx25821_start_video_dma(struct cx25821_dev *dev,
 				   struct cx25821_dmaqueue *q,
 				   struct cx25821_buffer *buf,
-				   struct sram_channel *channel);
+				   const struct sram_channel *channel);
 
-extern int cx25821_set_scale(struct cx25821_dev *dev, unsigned int width,
-			     unsigned int height, enum v4l2_field field);
 extern int cx25821_video_irq(struct cx25821_dev *dev, int chan_num, u32 status);
 extern void cx25821_video_unregister(struct cx25821_dev *dev, int chan_num);
 extern int cx25821_video_register(struct cx25821_dev *dev);
-extern int cx25821_get_format_size(void);
-
-extern int cx25821_buffer_setup(struct videobuf_queue *q, unsigned int *count,
-				unsigned int *size);
-extern int cx25821_buffer_prepare(struct videobuf_queue *q,
-				  struct videobuf_buffer *vb,
-				  enum v4l2_field field);
-extern void cx25821_buffer_release(struct videobuf_queue *q,
-				   struct videobuf_buffer *vb);
-extern struct videobuf_queue *get_queue(struct cx25821_fh *fh);
-extern int cx25821_get_resource(struct cx25821_fh *fh, int resource);
-extern int cx25821_video_mmap(struct file *file, struct vm_area_struct *vma);
-extern int cx25821_vidioc_try_fmt_vid_cap(struct file *file, void *priv,
-					  struct v4l2_format *f);
-extern int cx25821_vidioc_querycap(struct file *file, void *priv,
-				   struct v4l2_capability *cap);
-extern int cx25821_vidioc_enum_fmt_vid_cap(struct file *file, void *priv,
-					   struct v4l2_fmtdesc *f);
-extern int cx25821_vidioc_reqbufs(struct file *file, void *priv,
-				  struct v4l2_requestbuffers *p);
-extern int cx25821_vidioc_querybuf(struct file *file, void *priv,
-				   struct v4l2_buffer *p);
-extern int cx25821_vidioc_qbuf(struct file *file, void *priv,
-			       struct v4l2_buffer *p);
-extern int cx25821_vidioc_s_std(struct file *file, void *priv,
-				v4l2_std_id tvnorms);
-extern int cx25821_enum_input(struct cx25821_dev *dev, struct v4l2_input *i);
-extern int cx25821_vidioc_enum_input(struct file *file, void *priv,
-				     struct v4l2_input *i);
-extern int cx25821_vidioc_g_input(struct file *file, void *priv,
-				  unsigned int *i);
-extern int cx25821_vidioc_s_input(struct file *file, void *priv,
-				  unsigned int i);
-extern int cx25821_vidioc_g_ctrl(struct file *file, void *priv,
-				 struct v4l2_control *ctl);
-extern int cx25821_vidioc_g_fmt_vid_cap(struct file *file, void *priv,
-					struct v4l2_format *f);
-extern int cx25821_vidioc_g_frequency(struct file *file, void *priv,
-				      struct v4l2_frequency *f);
-extern int cx25821_set_freq(struct cx25821_dev *dev, const struct v4l2_frequency *f);
-extern int cx25821_vidioc_s_frequency(struct file *file, void *priv,
-				      const struct v4l2_frequency *f);
-extern int cx25821_vidioc_g_register(struct file *file, void *fh,
-				     struct v4l2_dbg_register *reg);
-extern int cx25821_vidioc_s_register(struct file *file, void *fh,
-				     const struct v4l2_dbg_register *reg);
-extern int cx25821_vidioc_g_tuner(struct file *file, void *priv,
-				  struct v4l2_tuner *t);
-extern int cx25821_vidioc_s_tuner(struct file *file, void *priv,
-				  const struct v4l2_tuner *t);
-
-extern int cx25821_is_valid_width(u32 width, v4l2_std_id tvnorm);
-extern int cx25821_is_valid_height(u32 height, v4l2_std_id tvnorm);
-
-extern int cx25821_vidioc_g_priority(struct file *file, void *f,
-				     enum v4l2_priority *p);
-extern int cx25821_vidioc_s_priority(struct file *file, void *f,
-				     enum v4l2_priority prio);
-
-extern int cx25821_vidioc_queryctrl(struct file *file, void *priv,
-				    struct v4l2_queryctrl *qctrl);
-extern int cx25821_set_control(struct cx25821_dev *dev,
-			       struct v4l2_control *ctrl, int chan_num);
-
-extern int cx25821_vidioc_cropcap(struct file *file, void *fh,
-				  struct v4l2_cropcap *cropcap);
-extern int cx25821_vidioc_s_crop(struct file *file, void *priv,
-				 const struct v4l2_crop *crop);
-extern int cx25821_vidioc_g_crop(struct file *file, void *priv,
-				 struct v4l2_crop *crop);
 
-extern int cx25821_vidioc_querystd(struct file *file, void *priv,
-				   v4l2_std_id *norm);
 #endif
diff --git a/drivers/media/pci/cx25821/cx25821.h b/drivers/media/pci/cx25821/cx25821.h
index 8a9c0c869412..90bdc196929f 100644
--- a/drivers/media/pci/cx25821/cx25821.h
+++ b/drivers/media/pci/cx25821/cx25821.h
@@ -33,17 +33,14 @@
 
 #include <media/v4l2-common.h>
 #include <media/v4l2-device.h>
-#include <media/tuner.h>
-#include <media/tveeprom.h>
+#include <media/v4l2-ctrls.h>
 #include <media/videobuf-dma-sg.h>
-#include <media/videobuf-dvb.h>
 
 #include "btcx-risc.h"
 #include "cx25821-reg.h"
 #include "cx25821-medusa-reg.h"
 #include "cx25821-sram.h"
 #include "cx25821-audio.h"
-#include "media/cx2341x.h"
 
 #include <linux/version.h>
 #include <linux/mutex.h>
@@ -55,8 +52,6 @@
 
 #define CX25821_MAXBOARDS 2
 
-#define TRUE    1
-#define FALSE   0
 #define LINE_SIZE_D1    1440
 
 /* Number of decoders and encoders */
@@ -67,7 +62,6 @@
 
 /* Max number of inputs by card */
 #define MAX_CX25821_INPUT     8
-#define INPUT(nr) (&cx25821_boards[dev->board].input[nr])
 #define RESOURCE_VIDEO0       1
 #define RESOURCE_VIDEO1       2
 #define RESOURCE_VIDEO2       4
@@ -80,7 +74,6 @@
 #define RESOURCE_VIDEO9       512
 #define RESOURCE_VIDEO10      1024
 #define RESOURCE_VIDEO11      2048
-#define RESOURCE_VIDEO_IOCTL  4096
 
 #define BUFFER_TIMEOUT     (HZ)	/* 0.5 seconds */
 
@@ -97,7 +90,6 @@
 #define CX25821_BOARD_CONEXANT_ATHENA10 1
 #define MAX_VID_CHANNEL_NUM     12
 #define VID_CHANNEL_NUM 8
-#define CX25821_NR_INPUT 2
 
 struct cx25821_fmt {
 	char *name;
@@ -107,14 +99,6 @@ struct cx25821_fmt {
 	u32 cxformat;
 };
 
-struct cx25821_ctrl {
-	struct v4l2_queryctrl v;
-	u32 off;
-	u32 reg;
-	u32 mask;
-	u32 shift;
-};
-
 struct cx25821_tvnorm {
 	char *name;
 	v4l2_std_id id;
@@ -122,40 +106,6 @@ struct cx25821_tvnorm {
 	u32 cxoformat;
 };
 
-struct cx25821_fh {
-	struct cx25821_dev *dev;
-	enum v4l2_buf_type type;
-	int radio;
-	u32 resources;
-
-	enum v4l2_priority prio;
-
-	/* video overlay */
-	struct v4l2_window win;
-	struct v4l2_clip *clips;
-	unsigned int nclips;
-
-	/* video capture */
-	struct cx25821_fmt *fmt;
-	unsigned int width, height;
-	int channel_id;
-
-	/* vbi capture */
-	struct videobuf_queue vidq;
-	struct videobuf_queue vbiq;
-
-	/* H264 Encoder specifics ONLY */
-	struct videobuf_queue mpegq;
-	atomic_t v4l_reading;
-};
-
-enum cx25821_itype {
-	CX25821_VMUX_COMPOSITE = 1,
-	CX25821_VMUX_SVIDEO,
-	CX25821_VMUX_DEBUG,
-	CX25821_RADIO,
-};
-
 enum cx25821_src_sel_type {
 	CX25821_SRC_SEL_EXT_656_VIDEO = 0,
 	CX25821_SRC_SEL_PARALLEL_MPEG_VIDEO
@@ -169,16 +119,10 @@ struct cx25821_buffer {
 	/* cx25821 specific */
 	unsigned int bpl;
 	struct btcx_riscmem risc;
-	struct cx25821_fmt *fmt;
+	const struct cx25821_fmt *fmt;
 	u32 count;
 };
 
-struct cx25821_input {
-	enum cx25821_itype type;
-	unsigned int vmux;
-	u32 gpio0, gpio1, gpio2, gpio3;
-};
-
 enum port {
 	CX25821_UNDEFINED = 0,
 	CX25821_RAW,
@@ -190,19 +134,8 @@ struct cx25821_board {
 	enum port porta;
 	enum port portb;
 	enum port portc;
-	unsigned int tuner_type;
-	unsigned int radio_type;
-	unsigned char tuner_addr;
-	unsigned char radio_addr;
 
 	u32 clk_freq;
-	struct cx25821_input input[CX25821_NR_INPUT];
-};
-
-struct cx25821_subid {
-	u16 subvendor;
-	u16 subdevice;
-	u32 card;
 };
 
 struct cx25821_i2c {
@@ -234,34 +167,70 @@ struct cx25821_dmaqueue {
 
 struct cx25821_data {
 	struct cx25821_dev *dev;
-	struct sram_channel *channel;
+	const struct sram_channel *channel;
+};
+
+struct cx25821_dev;
+
+struct cx25821_channel;
+
+struct cx25821_video_out_data {
+	struct cx25821_channel *chan;
+	int _line_size;
+	int _prog_cnt;
+	int _pixel_format;
+	int _is_first_frame;
+	int _is_running;
+	int _file_status;
+	int _lines_count;
+	int _frame_count;
+	unsigned int _risc_size;
+
+	__le32 *_dma_virt_start_addr;
+	__le32 *_dma_virt_addr;
+	dma_addr_t _dma_phys_addr;
+	dma_addr_t _dma_phys_start_addr;
+
+	unsigned int _data_buf_size;
+	__le32 *_data_buf_virt_addr;
+	dma_addr_t _data_buf_phys_addr;
+
+	u32 upstream_riscbuf_size;
+	u32 upstream_databuf_size;
+	int is_60hz;
+	int _frame_index;
+	int cur_frame_index;
+	int curpos;
+	wait_queue_head_t waitq;
 };
 
 struct cx25821_channel {
-	struct v4l2_prio_state prio;
+	unsigned id;
+	struct cx25821_dev *dev;
+	struct v4l2_fh *streaming_fh;
 
-	int ctl_bright;
-	int ctl_contrast;
-	int ctl_hue;
-	int ctl_saturation;
+	struct v4l2_ctrl_handler hdl;
 	struct cx25821_data timeout_data;
 
-	struct video_device *video_dev;
-	struct cx25821_dmaqueue vidq;
-
-	struct sram_channel *sram_channels;
+	struct video_device vdev;
+	struct cx25821_dmaqueue dma_vidq;
+	struct videobuf_queue vidq;
 
-	struct mutex lock;
-	int resources;
+	const struct sram_channel *sram_channels;
 
+	const struct cx25821_fmt *fmt;
+	unsigned int width, height;
 	int pixel_formats;
 	int use_cif_resolution;
 	int cif_width;
+
+	/* video output data for the video output channel */
+	struct cx25821_video_out_data *out;
 };
 
+struct snd_card;
+
 struct cx25821_dev {
-	struct list_head devlist;
-	atomic_t refcount;
 	struct v4l2_device v4l2_dev;
 
 	/* pci stuff */
@@ -273,6 +242,8 @@ struct cx25821_dev {
 	u8 __iomem *bmmio;
 	int pci_irqmask;
 	int hwrevision;
+	/* used by cx25821-alsa */
+	struct snd_card *card;
 
 	u32 clk_freq;
 
@@ -289,17 +260,8 @@ struct cx25821_dev {
 	char name[32];
 
 	/* Analog video */
-	u32 resources;
 	unsigned int input;
-	u32 tvaudio;
 	v4l2_std_id tvnorm;
-	unsigned int tuner_type;
-	unsigned char tuner_addr;
-	unsigned int radio_type;
-	unsigned char radio_addr;
-	unsigned int has_radio;
-	unsigned int videc_type;
-	unsigned char videc_addr;
 	unsigned short _max_num_decoders;
 
 	/* Analog Audio Upstream */
@@ -323,132 +285,26 @@ struct cx25821_dev {
 	__le32 *_audiodata_buf_virt_addr;
 	dma_addr_t _audiodata_buf_phys_addr;
 	char *_audiofilename;
-
-	/* V4l */
-	u32 freq;
-	struct video_device *vbi_dev;
-	struct video_device *radio_dev;
-	struct video_device *ioctl_dev;
-
-	spinlock_t slock;
-
-	/* Video Upstream */
-	int _line_size;
-	int _prog_cnt;
-	int _pixel_format;
-	int _is_first_frame;
-	int _is_running;
-	int _file_status;
-	int _lines_count;
-	int _frame_count;
-	int _channel_upstream_select;
-	unsigned int _risc_size;
-
-	__le32 *_dma_virt_start_addr;
-	__le32 *_dma_virt_addr;
-	dma_addr_t _dma_phys_addr;
-	dma_addr_t _dma_phys_start_addr;
-
-	unsigned int _data_buf_size;
-	__le32 *_data_buf_virt_addr;
-	dma_addr_t _data_buf_phys_addr;
-	char *_filename;
-	char *_defaultname;
-
-	int _line_size_ch2;
-	int _prog_cnt_ch2;
-	int _pixel_format_ch2;
-	int _is_first_frame_ch2;
-	int _is_running_ch2;
-	int _file_status_ch2;
-	int _lines_count_ch2;
-	int _frame_count_ch2;
-	int _channel2_upstream_select;
-	unsigned int _risc_size_ch2;
-
-	__le32 *_dma_virt_start_addr_ch2;
-	__le32 *_dma_virt_addr_ch2;
-	dma_addr_t _dma_phys_addr_ch2;
-	dma_addr_t _dma_phys_start_addr_ch2;
-
-	unsigned int _data_buf_size_ch2;
-	__le32 *_data_buf_virt_addr_ch2;
-	dma_addr_t _data_buf_phys_addr_ch2;
-	char *_filename_ch2;
-	char *_defaultname_ch2;
-
-	/* MPEG Encoder ONLY settings */
-	u32 cx23417_mailbox;
-	struct cx2341x_mpeg_params mpeg_params;
-	struct video_device *v4l_device;
-	atomic_t v4l_reader_count;
-	struct cx25821_tvnorm encodernorm;
-
-	u32 upstream_riscbuf_size;
-	u32 upstream_databuf_size;
-	u32 upstream_riscbuf_size_ch2;
-	u32 upstream_databuf_size_ch2;
 	u32 audio_upstream_riscbuf_size;
 	u32 audio_upstream_databuf_size;
-	int _isNTSC;
-	int _frame_index;
 	int _audioframe_index;
-	struct workqueue_struct *_irq_queues;
-	struct work_struct _irq_work_entry;
-	struct workqueue_struct *_irq_queues_ch2;
-	struct work_struct _irq_work_entry_ch2;
 	struct workqueue_struct *_irq_audio_queues;
 	struct work_struct _audio_work_entry;
-	char *input_filename;
-	char *input_filename_ch2;
-	int _frame_index_ch2;
-	int _isNTSC_ch2;
-	char *vid_stdname_ch2;
-	int pixel_format_ch2;
-	int channel_select_ch2;
-	int command_ch2;
 	char *input_audiofilename;
-	char *vid_stdname;
-	int pixel_format;
-	int channel_select;
-	int command;
-	int channel_opened;
-};
 
-struct upstream_user_struct {
-	char *input_filename;
-	char *vid_stdname;
-	int pixel_format;
-	int channel_select;
-	int command;
-};
+	/* V4l */
+	spinlock_t slock;
 
-struct downstream_user_struct {
-	char *vid_stdname;
-	int pixel_format;
-	int cif_resolution_enable;
-	int cif_width;
-	int decoder_select;
-	int command;
-	int reg_address;
-	int reg_data;
+	/* Video Upstream */
+	struct cx25821_video_out_data vid_out_data[2];
 };
 
-extern struct upstream_user_struct *up_data;
-
 static inline struct cx25821_dev *get_cx25821(struct v4l2_device *v4l2_dev)
 {
 	return container_of(v4l2_dev, struct cx25821_dev, v4l2_dev);
 }
 
-#define cx25821_call_all(dev, o, f, args...) \
-	v4l2_device_call_all(&dev->v4l2_dev, 0, o, f, ##args)
-
-extern struct list_head cx25821_devlist;
-extern struct mutex cx25821_devlist_mutex;
-
 extern struct cx25821_board cx25821_boards[];
-extern struct cx25821_subid cx25821_subids[];
 
 #define SRAM_CH00  0		/* Video A */
 #define SRAM_CH01  1		/* Video B */
@@ -467,7 +323,6 @@ extern struct cx25821_subid cx25821_subids[];
 #define VID_UPSTREAM_SRAM_CHANNEL_I     SRAM_CH09
 #define VID_UPSTREAM_SRAM_CHANNEL_J     SRAM_CH10
 #define AUDIO_UPSTREAM_SRAM_CHANNEL_B   SRAM_CH11
-#define VIDEO_IOCTL_CH  11
 
 struct sram_channel {
 	char *name;
@@ -503,10 +358,8 @@ struct sram_channel {
 	u32 jumponly;
 	u32 irq_bit;
 };
-extern struct sram_channel cx25821_sram_channels[];
 
-#define STATUS_SUCCESS         0
-#define STATUS_UNSUCCESSFUL    -1
+extern const struct sram_channel cx25821_sram_channels[];
 
 #define cx_read(reg)             readl(dev->lmmio + ((reg)>>2))
 #define cx_write(reg, value)     writel((value), dev->lmmio + ((reg)>>2))
@@ -529,8 +382,6 @@ extern struct sram_channel cx25821_sram_channels[];
 	pr_info("(%d): " fmt, dev->board, ##args)
 
 extern int cx25821_i2c_register(struct cx25821_i2c *bus);
-extern void cx25821_card_setup(struct cx25821_dev *dev);
-extern int cx25821_ir_init(struct cx25821_dev *dev);
 extern int cx25821_i2c_read(struct cx25821_i2c *bus, u16 reg_addr, int *value);
 extern int cx25821_i2c_write(struct cx25821_i2c *bus, u16 reg_addr, int value);
 extern int cx25821_i2c_unregister(struct cx25821_i2c *bus);
@@ -551,7 +402,7 @@ extern int medusa_set_saturation(struct cx25821_dev *dev, int saturation,
 				 int decoder);
 
 extern int cx25821_sram_channel_setup(struct cx25821_dev *dev,
-				      struct sram_channel *ch, unsigned int bpl,
+				      const struct sram_channel *ch, unsigned int bpl,
 				      u32 risc);
 
 extern int cx25821_risc_buffer(struct pci_dev *pci, struct btcx_riscmem *risc,
@@ -570,46 +421,31 @@ extern void cx25821_free_buffer(struct videobuf_queue *q,
 extern int cx25821_risc_stopper(struct pci_dev *pci, struct btcx_riscmem *risc,
 				u32 reg, u32 mask, u32 value);
 extern void cx25821_sram_channel_dump(struct cx25821_dev *dev,
-				      struct sram_channel *ch);
+				      const struct sram_channel *ch);
 extern void cx25821_sram_channel_dump_audio(struct cx25821_dev *dev,
-					    struct sram_channel *ch);
+					    const struct sram_channel *ch);
 
 extern struct cx25821_dev *cx25821_dev_get(struct pci_dev *pci);
 extern void cx25821_print_irqbits(char *name, char *tag, char **strings,
 				  int len, u32 bits, u32 mask);
 extern void cx25821_dev_unregister(struct cx25821_dev *dev);
 extern int cx25821_sram_channel_setup_audio(struct cx25821_dev *dev,
-					    struct sram_channel *ch,
+					    const struct sram_channel *ch,
 					    unsigned int bpl, u32 risc);
 
-extern int cx25821_vidupstream_init_ch1(struct cx25821_dev *dev,
-					int channel_select, int pixel_format);
-extern int cx25821_vidupstream_init_ch2(struct cx25821_dev *dev,
-					int channel_select, int pixel_format);
+extern int cx25821_vidupstream_init(struct cx25821_channel *chan, int pixel_format);
 extern int cx25821_audio_upstream_init(struct cx25821_dev *dev,
 				       int channel_select);
-extern void cx25821_free_mem_upstream_ch1(struct cx25821_dev *dev);
-extern void cx25821_free_mem_upstream_ch2(struct cx25821_dev *dev);
+extern int cx25821_write_frame(struct cx25821_channel *chan,
+		const char __user *data, size_t count);
+extern void cx25821_free_mem_upstream(struct cx25821_channel *chan);
 extern void cx25821_free_mem_upstream_audio(struct cx25821_dev *dev);
-extern void cx25821_start_upstream_video_ch1(struct cx25821_dev *dev,
-					     struct upstream_user_struct
-					     *up_data);
-extern void cx25821_start_upstream_video_ch2(struct cx25821_dev *dev,
-					     struct upstream_user_struct
-					     *up_data);
-extern void cx25821_start_upstream_audio(struct cx25821_dev *dev,
-					 struct upstream_user_struct *up_data);
-extern void cx25821_stop_upstream_video_ch1(struct cx25821_dev *dev);
-extern void cx25821_stop_upstream_video_ch2(struct cx25821_dev *dev);
+extern void cx25821_stop_upstream_video(struct cx25821_channel *chan);
 extern void cx25821_stop_upstream_audio(struct cx25821_dev *dev);
 extern int cx25821_sram_channel_setup_upstream(struct cx25821_dev *dev,
-					       struct sram_channel *ch,
+					       const struct sram_channel *ch,
 					       unsigned int bpl, u32 risc);
 extern void cx25821_set_pixel_format(struct cx25821_dev *dev, int channel,
 				     u32 format);
-extern void cx25821_videoioctl_unregister(struct cx25821_dev *dev);
-extern struct video_device *cx25821_vdev_init(struct cx25821_dev *dev,
-					      struct pci_dev *pci,
-					      struct video_device *template,
-					      char *type);
+
 #endif