V4L/DVB (10729): zoran: convert to v4l2_device/v4l2_subdev.

Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

5 files changed, 159 insertions, 288 deletions

diff --git a/drivers/media/video/zoran/zoran.h b/drivers/media/video/zoran/zoran.h
index a323eb66e7cf..ab1ced26276d 100644
--- a/drivers/media/video/zoran/zoran.h
+++ b/drivers/media/video/zoran/zoran.h
@@ -31,6 +31,8 @@
 #ifndef _BUZ_H_
 #define _BUZ_H_
 
+#include <media/v4l2-device.h>
+
 struct zoran_requestbuffers {
 	unsigned long count;	/* Number of buffers for MJPEG grabbing */
 	unsigned long size;	/* Size PER BUFFER in bytes */
@@ -339,7 +341,12 @@ struct zoran_fh {
 struct card_info {
 	enum card_type type;
 	char name[32];
-	u16 i2c_decoder, i2c_encoder;			/* I2C types */
+	const char *i2c_decoder;	/* i2c decoder device */
+	const char *mod_decoder;	/* i2c decoder module */
+	const unsigned short *addrs_decoder;
+	const char *i2c_encoder;	/* i2c encoder device */
+	const char *mod_encoder;	/* i2c encoder module */
+	const unsigned short *addrs_encoder;
 	u16 video_vfe, video_codec;			/* videocodec types */
 	u16 audio_chip;					/* audio type */
 
@@ -370,14 +377,15 @@ struct card_info {
 };
 
 struct zoran {
+	struct v4l2_device v4l2_dev;
 	struct video_device *video_dev;
 
 	struct i2c_adapter i2c_adapter;	/* */
 	struct i2c_algo_bit_data i2c_algo;	/* */
 	u32 i2cbr;
 
-	struct i2c_client *decoder;	/* video decoder i2c client */
-	struct i2c_client *encoder;	/* video encoder i2c client */
+	struct v4l2_subdev *decoder;	/* video decoder sub-device */
+	struct v4l2_subdev *encoder;	/* video encoder sub-device */
 
 	struct videocodec *codec;	/* video codec */
 	struct videocodec *vfe;	/* video front end */
@@ -481,6 +489,11 @@ struct zoran {
 	wait_queue_head_t test_q;
 };
 
+static inline struct zoran *to_zoran(struct v4l2_device *v4l2_dev)
+{
+	return container_of(v4l2_dev, struct zoran, v4l2_dev);
+}
+
 /* There was something called _ALPHA_BUZ that used the PCI address instead of
  * the kernel iomapped address for btread/btwrite.  */
 #define btwrite(dat,adr)    writel((dat), zr->zr36057_mem+(adr))
diff --git a/drivers/media/video/zoran/zoran_card.c b/drivers/media/video/zoran/zoran_card.c
index 38166d40c716..0b64612e35b9 100644
--- a/drivers/media/video/zoran/zoran_card.c
+++ b/drivers/media/video/zoran/zoran_card.c
@@ -332,47 +332,6 @@ avs6eyes_init (struct zoran *zr)
 }
 
 static char *
-i2cid_to_modulename (u16 i2c_id)
-{
-	char *name = NULL;
-
-	switch (i2c_id) {
-	case I2C_DRIVERID_SAA7110:
-		name = "saa7110";
-		break;
-	case I2C_DRIVERID_SAA711X:
-		name = "saa7115";
-		break;
-	case I2C_DRIVERID_SAA7185B:
-		name = "saa7185";
-		break;
-	case I2C_DRIVERID_ADV7170:
-		name = "adv7170";
-		break;
-	case I2C_DRIVERID_ADV7175:
-		name = "adv7175";
-		break;
-	case I2C_DRIVERID_BT819:
-		name = "bt819";
-		break;
-	case I2C_DRIVERID_BT856:
-		name = "bt856";
-		break;
-	case I2C_DRIVERID_BT866:
-		name = "bt866";
-		break;
-	case I2C_DRIVERID_VPX3220:
-		name = "vpx3220";
-		break;
-	case I2C_DRIVERID_KS0127:
-		name = "ks0127";
-		break;
-	}
-
-	return name;
-}
-
-static char *
 codecid_to_modulename (u16 codecid)
 {
 	char *name = NULL;
@@ -422,11 +381,24 @@ static struct tvnorm f60ccir601_lm33r10 = { 858, 720, 56+54, 788, 525, 480, 16 }
 static struct tvnorm f50ccir601_avs6eyes = { 864, 720, 74, 804, 625, 576, 18 };
 static struct tvnorm f60ccir601_avs6eyes = { 858, 720, 56, 788, 525, 480, 16 };
 
+static const unsigned short vpx3220_addrs[] = { 0x43, 0x47, I2C_CLIENT_END };
+static const unsigned short saa7110_addrs[] = { 0x4e, 0x4f, I2C_CLIENT_END };
+static const unsigned short saa7111_addrs[] = { 0x25, 0x24, I2C_CLIENT_END };
+static const unsigned short saa7114_addrs[] = { 0x21, 0x20, I2C_CLIENT_END };
+static const unsigned short adv717x_addrs[] = { 0x6a, 0x6b, 0x2a, 0x2b, I2C_CLIENT_END };
+static const unsigned short ks0127_addrs[] = { 0x6c, 0x6d, I2C_CLIENT_END };
+static const unsigned short saa7185_addrs[] = { 0x44, I2C_CLIENT_END };
+static const unsigned short bt819_addrs[] = { 0x45, I2C_CLIENT_END };
+static const unsigned short bt856_addrs[] = { 0x44, I2C_CLIENT_END };
+static const unsigned short bt866_addrs[] = { 0x44, I2C_CLIENT_END };
+
 static struct card_info zoran_cards[NUM_CARDS] __devinitdata = {
 	{
 		.type = DC10_old,
 		.name = "DC10(old)",
-		.i2c_decoder = I2C_DRIVERID_VPX3220,
+		.i2c_decoder = "vpx3220a",
+		.mod_decoder = "vpx3220",
+		.addrs_decoder = vpx3220_addrs,
 		.video_codec = CODEC_TYPE_ZR36050,
 		.video_vfe = CODEC_TYPE_ZR36016,
 
@@ -454,8 +426,12 @@ static struct card_info zoran_cards[NUM_CARDS] __devinitdata = {
 	}, {
 		.type = DC10_new,
 		.name = "DC10(new)",
-		.i2c_decoder = I2C_DRIVERID_SAA7110,
-		.i2c_encoder = I2C_DRIVERID_ADV7175,
+		.i2c_decoder = "saa7110",
+		.mod_decoder = "saa7110",
+		.addrs_decoder = saa7110_addrs,
+		.i2c_encoder = "adv7175",
+		.mod_encoder = "adv7175",
+		.addrs_encoder = adv717x_addrs,
 		.video_codec = CODEC_TYPE_ZR36060,
 
 		.inputs = 3,
@@ -481,8 +457,12 @@ static struct card_info zoran_cards[NUM_CARDS] __devinitdata = {
 	}, {
 		.type = DC10plus,
 		.name = "DC10plus",
-		.i2c_decoder = I2C_DRIVERID_SAA7110,
-		.i2c_encoder = I2C_DRIVERID_ADV7175,
+		.i2c_decoder = "saa7110",
+		.mod_decoder = "saa7110",
+		.addrs_decoder = saa7110_addrs,
+		.i2c_encoder = "adv7175",
+		.mod_encoder = "adv7175",
+		.addrs_encoder = adv717x_addrs,
 		.video_codec = CODEC_TYPE_ZR36060,
 
 		.inputs = 3,
@@ -509,8 +489,12 @@ static struct card_info zoran_cards[NUM_CARDS] __devinitdata = {
 	}, {
 		.type = DC30,
 		.name = "DC30",
-		.i2c_decoder = I2C_DRIVERID_VPX3220,
-		.i2c_encoder = I2C_DRIVERID_ADV7175,
+		.i2c_decoder = "vpx3220a",
+		.mod_decoder = "vpx3220",
+		.addrs_decoder = vpx3220_addrs,
+		.i2c_encoder = "adv7175",
+		.mod_encoder = "adv7175",
+		.addrs_encoder = adv717x_addrs,
 		.video_codec = CODEC_TYPE_ZR36050,
 		.video_vfe = CODEC_TYPE_ZR36016,
 
@@ -538,8 +522,12 @@ static struct card_info zoran_cards[NUM_CARDS] __devinitdata = {
 	}, {
 		.type = DC30plus,
 		.name = "DC30plus",
-		.i2c_decoder = I2C_DRIVERID_VPX3220,
-		.i2c_encoder = I2C_DRIVERID_ADV7175,
+		.i2c_decoder = "vpx3220a",
+		.mod_decoder = "vpx3220",
+		.addrs_decoder = vpx3220_addrs,
+		.i2c_encoder = "adv7175",
+		.mod_encoder = "adv7175",
+		.addrs_encoder = adv717x_addrs,
 		.video_codec = CODEC_TYPE_ZR36050,
 		.video_vfe = CODEC_TYPE_ZR36016,
 
@@ -567,8 +555,12 @@ static struct card_info zoran_cards[NUM_CARDS] __devinitdata = {
 	}, {
 		.type = LML33,
 		.name = "LML33",
-		.i2c_decoder = I2C_DRIVERID_BT819,
-		.i2c_encoder = I2C_DRIVERID_BT856,
+		.i2c_decoder = "bt819a",
+		.mod_decoder = "bt819",
+		.addrs_decoder = bt819_addrs,
+		.i2c_encoder = "bt856",
+		.mod_encoder = "bt856",
+		.addrs_encoder = bt856_addrs,
 		.video_codec = CODEC_TYPE_ZR36060,
 
 		.inputs = 2,
@@ -594,8 +586,12 @@ static struct card_info zoran_cards[NUM_CARDS] __devinitdata = {
 	}, {
 		.type = LML33R10,
 		.name = "LML33R10",
-		.i2c_decoder = I2C_DRIVERID_SAA711X,
-		.i2c_encoder = I2C_DRIVERID_ADV7170,
+		.i2c_decoder = "saa7114",
+		.mod_decoder = "saa7115",
+		.addrs_decoder = saa7114_addrs,
+		.i2c_encoder = "adv7170",
+		.mod_encoder = "adv7170",
+		.addrs_encoder = adv717x_addrs,
 		.video_codec = CODEC_TYPE_ZR36060,
 
 		.inputs = 2,
@@ -621,8 +617,12 @@ static struct card_info zoran_cards[NUM_CARDS] __devinitdata = {
 	}, {
 		.type = BUZ,
 		.name = "Buz",
-		.i2c_decoder = I2C_DRIVERID_SAA711X,
-		.i2c_encoder = I2C_DRIVERID_SAA7185B,
+		.i2c_decoder = "saa7111",
+		.mod_decoder = "saa7115",
+		.addrs_decoder = saa7111_addrs,
+		.i2c_encoder = "saa7185",
+		.mod_encoder = "saa7185",
+		.addrs_encoder = saa7185_addrs,
 		.video_codec = CODEC_TYPE_ZR36060,
 
 		.inputs = 2,
@@ -650,8 +650,12 @@ static struct card_info zoran_cards[NUM_CARDS] __devinitdata = {
 		.name = "6-Eyes",
 		/* AverMedia chose not to brand the 6-Eyes. Thus it
 		   can't be autodetected, and requires card=x. */
-		.i2c_decoder = I2C_DRIVERID_KS0127,
-		.i2c_encoder = I2C_DRIVERID_BT866,
+		.i2c_decoder = "ks0127",
+		.mod_decoder = "ks0127",
+		.addrs_decoder = ks0127_addrs,
+		.i2c_encoder = "bt866",
+		.mod_encoder = "bt866",
+		.addrs_encoder = bt866_addrs,
 		.video_codec = CODEC_TYPE_ZR36060,
 
 		.inputs = 10,
@@ -732,69 +736,6 @@ zoran_i2c_setscl (void *data,
 	btwrite(zr->i2cbr, ZR36057_I2CBR);
 }
 
-static int
-zoran_i2c_client_register (struct i2c_client *client)
-{
-	struct zoran *zr = (struct zoran *) i2c_get_adapdata(client->adapter);
-	int res = 0;
-
-	dprintk(2,
-		KERN_DEBUG "%s: i2c_client_register() - driver id = %d\n",
-		ZR_DEVNAME(zr), client->driver->id);
-
-	mutex_lock(&zr->resource_lock);
-
-	if (zr->user > 0) {
-		/* we're already busy, so we keep a reference to
-		 * them... Could do a lot of stuff here, but this
-		 * is easiest. (Did I ever mention I'm a lazy ass?)
-		 */
-		res = -EBUSY;
-		goto clientreg_unlock_and_return;
-	}
-
-	if (client->driver->id == zr->card.i2c_decoder)
-		zr->decoder = client;
-	else if (client->driver->id == zr->card.i2c_encoder)
-		zr->encoder = client;
-	else {
-		res = -ENODEV;
-		goto clientreg_unlock_and_return;
-	}
-
-clientreg_unlock_and_return:
-	mutex_unlock(&zr->resource_lock);
-
-	return res;
-}
-
-static int
-zoran_i2c_client_unregister (struct i2c_client *client)
-{
-	struct zoran *zr = (struct zoran *) i2c_get_adapdata(client->adapter);
-	int res = 0;
-
-	dprintk(2, KERN_DEBUG "%s: i2c_client_unregister()\n", ZR_DEVNAME(zr));
-
-	mutex_lock(&zr->resource_lock);
-
-	if (zr->user > 0) {
-		res = -EBUSY;
-		goto clientunreg_unlock_and_return;
-	}
-
-	/* try to locate it */
-	if (client == zr->encoder) {
-		zr->encoder = NULL;
-	} else if (client == zr->decoder) {
-		zr->decoder = NULL;
-		snprintf(ZR_DEVNAME(zr), sizeof(ZR_DEVNAME(zr)), "MJPEG[%d]", zr->id);
-	}
-clientunreg_unlock_and_return:
-	mutex_unlock(&zr->resource_lock);
-	return res;
-}
-
 static const struct i2c_algo_bit_data zoran_i2c_bit_data_template = {
 	.setsda = zoran_i2c_setsda,
 	.setscl = zoran_i2c_setscl,
@@ -810,13 +751,10 @@ zoran_register_i2c (struct zoran *zr)
 	memcpy(&zr->i2c_algo, &zoran_i2c_bit_data_template,
 	       sizeof(struct i2c_algo_bit_data));
 	zr->i2c_algo.data = zr;
-	zr->i2c_adapter.class = I2C_CLASS_TV_ANALOG;
 	zr->i2c_adapter.id = I2C_HW_B_ZR36067;
-	zr->i2c_adapter.client_register = zoran_i2c_client_register;
-	zr->i2c_adapter.client_unregister = zoran_i2c_client_unregister;
 	strlcpy(zr->i2c_adapter.name, ZR_DEVNAME(zr),
 		sizeof(zr->i2c_adapter.name));
-	i2c_set_adapdata(&zr->i2c_adapter, zr);
+	i2c_set_adapdata(&zr->i2c_adapter, &zr->v4l2_dev);
 	zr->i2c_adapter.algo_data = &zr->i2c_algo;
 	zr->i2c_adapter.dev.parent = &zr->pci_dev->dev;
 	return i2c_bit_add_bus(&zr->i2c_adapter);
@@ -1173,8 +1111,8 @@ zr36057_init (struct zoran *zr)
 	if (!pass_through) {
 		struct v4l2_routing route = { 2, 0 };
 
-		decoder_command(zr, VIDIOC_STREAMOFF, 0);
-		encoder_command(zr, VIDIOC_INT_S_VIDEO_ROUTING, &route);
+		decoder_call(zr, video, s_stream, 0);
+		encoder_call(zr, video, s_routing, &route);
 	}
 
 	zr->zoran_proc = NULL;
@@ -1189,7 +1127,8 @@ exit_free:
 
 static void __devexit zoran_remove(struct pci_dev *pdev)
 {
-	struct zoran *zr = pci_get_drvdata(pdev);
+	struct v4l2_device *v4l2_dev = dev_get_drvdata(&pdev->dev);
+	struct zoran *zr = to_zoran(v4l2_dev);
 
 	if (!zr->initialized)
 		goto exit_free;
@@ -1222,7 +1161,7 @@ static void __devexit zoran_remove(struct pci_dev *pdev)
 	pci_disable_device(zr->pci_dev);
 	video_unregister_device(zr->video_dev);
 exit_free:
-	pci_set_drvdata(pdev, NULL);
+	v4l2_device_unregister(&zr->v4l2_dev);
 	kfree(zr);
 }
 
@@ -1294,7 +1233,7 @@ static int __devinit zoran_probe(struct pci_dev *pdev,
 	struct videocodec_master *master_vfe = NULL;
 	struct videocodec_master *master_codec = NULL;
 	int card_num;
-	char *i2c_enc_name, *i2c_dec_name, *codec_name, *vfe_name;
+	char *codec_name, *vfe_name;
 	unsigned int nr;
 
 
@@ -1315,13 +1254,15 @@ static int __devinit zoran_probe(struct pci_dev *pdev,
 			ZORAN_NAME);
 		return -ENOMEM;
 	}
+	if (v4l2_device_register(&pdev->dev, &zr->v4l2_dev))
+		goto zr_free_mem;
 	zr->pci_dev = pdev;
 	zr->id = nr;
 	snprintf(ZR_DEVNAME(zr), sizeof(ZR_DEVNAME(zr)), "MJPEG[%u]", zr->id);
 	spin_lock_init(&zr->spinlock);
 	mutex_init(&zr->resource_lock);
 	if (pci_enable_device(pdev))
-		goto zr_free_mem;
+		goto zr_unreg;
 	pci_read_config_byte(zr->pci_dev, PCI_CLASS_REVISION, &zr->revision);
 
 	dprintk(1,
@@ -1348,7 +1289,7 @@ static int __devinit zoran_probe(struct pci_dev *pdev,
 				KERN_ERR
 				"%s: It is not possible to auto-detect ZR36057 based cards\n",
 				ZR_DEVNAME(zr));
-			goto zr_free_mem;
+			goto zr_unreg;
 		}
 
 		card_num = ent->driver_data;
@@ -1357,7 +1298,7 @@ static int __devinit zoran_probe(struct pci_dev *pdev,
 				KERN_ERR
 				"%s: Unknown card, try specifying card=X module parameter\n",
 				ZR_DEVNAME(zr));
-			goto zr_free_mem;
+			goto zr_unreg;
 		}
 		dprintk(3,
 			KERN_DEBUG
@@ -1370,7 +1311,7 @@ static int __devinit zoran_probe(struct pci_dev *pdev,
 				KERN_ERR
 				"%s: User specified card type %d out of range (0 .. %d)\n",
 				ZR_DEVNAME(zr), card_num, NUM_CARDS - 1);
-			goto zr_free_mem;
+			goto zr_unreg;
 		}
 	}
 
@@ -1389,7 +1330,7 @@ static int __devinit zoran_probe(struct pci_dev *pdev,
 			KERN_ERR
 			"%s: %s() - ioremap failed\n",
 			ZR_DEVNAME(zr), __func__);
-		goto zr_free_mem;
+		goto zr_unreg;
 	}
 
 	result = request_irq(zr->pci_dev->irq, zoran_irq,
@@ -1432,46 +1373,6 @@ static int __devinit zoran_probe(struct pci_dev *pdev,
 	dprintk(2, KERN_INFO "%s: Initializing i2c bus...\n",
 		ZR_DEVNAME(zr));
 
-	/* i2c decoder */
-	if (decoder[zr->id] != -1) {
-		i2c_dec_name = i2cid_to_modulename(decoder[zr->id]);
-		zr->card.i2c_decoder = decoder[zr->id];
-	} else if (zr->card.i2c_decoder != 0) {
-		i2c_dec_name = i2cid_to_modulename(zr->card.i2c_decoder);
-	} else {
-		i2c_dec_name = NULL;
-	}
-
-	if (i2c_dec_name) {
-		result = request_module(i2c_dec_name);
-		if (result < 0) {
-			dprintk(1,
-				KERN_ERR
-				"%s: failed to load module %s: %d\n",
-				ZR_DEVNAME(zr), i2c_dec_name, result);
-		}
-	}
-
-	/* i2c encoder */
-	if (encoder[zr->id] != -1) {
-		i2c_enc_name = i2cid_to_modulename(encoder[zr->id]);
-		zr->card.i2c_encoder = encoder[zr->id];
-	} else if (zr->card.i2c_encoder != 0) {
-		i2c_enc_name = i2cid_to_modulename(zr->card.i2c_encoder);
-	} else {
-		i2c_enc_name = NULL;
-	}
-
-	if (i2c_enc_name) {
-		result = request_module(i2c_enc_name);
-		if (result < 0) {
-			dprintk(1,
-				KERN_ERR
-				"%s: failed to load module %s: %d\n",
-				ZR_DEVNAME(zr), i2c_enc_name, result);
-		}
-	}
-
 	if (zoran_register_i2c(zr) < 0) {
 		dprintk(1,
 			KERN_ERR
@@ -1480,6 +1381,14 @@ static int __devinit zoran_probe(struct pci_dev *pdev,
 		goto zr_free_irq;
 	}
 
+	zr->decoder = v4l2_i2c_new_probed_subdev(&zr->i2c_adapter,
+		zr->card.mod_decoder, zr->card.i2c_decoder, zr->card.addrs_decoder);
+
+	if (zr->card.mod_encoder)
+		zr->encoder = v4l2_i2c_new_probed_subdev(&zr->i2c_adapter,
+			zr->card.mod_encoder, zr->card.i2c_encoder,
+			zr->card.addrs_encoder);
+
 	dprintk(2,
 		KERN_INFO "%s: Initializing videocodec bus...\n",
 		ZR_DEVNAME(zr));
@@ -1569,8 +1478,6 @@ static int __devinit zoran_probe(struct pci_dev *pdev,
 
 	zoran_proc_init(zr);
 
-	pci_set_drvdata(pdev, zr);
-
 	return 0;
 
 zr_detach_vfe:
@@ -1588,6 +1495,8 @@ zr_free_irq:
 	free_irq(zr->pci_dev->irq, zr);
 zr_unmap:
 	iounmap(zr->zr36057_mem);
+zr_unreg:
+	v4l2_device_unregister(&zr->v4l2_dev);
 zr_free_mem:
 	kfree(zr);
 
diff --git a/drivers/media/video/zoran/zoran_device.c b/drivers/media/video/zoran/zoran_device.c
index 712599a5ed72..3336611c0cdf 100644
--- a/drivers/media/video/zoran/zoran_device.c
+++ b/drivers/media/video/zoran/zoran_device.c
@@ -36,15 +36,12 @@
 #include <linux/proc_fs.h>
 #include <linux/i2c.h>
 #include <linux/i2c-algo-bit.h>
-#include <linux/videodev.h>
 #include <linux/videodev2.h>
 #include <media/v4l2-common.h>
 #include <linux/spinlock.h>
 #include <linux/sem.h>
 
 #include <linux/pci.h>
-#include <linux/video_decoder.h>
-#include <linux/video_encoder.h>
 #include <linux/delay.h>
 #include <linux/wait.h>
 
@@ -1000,9 +997,9 @@ zr36057_enable_jpg (struct zoran          *zr,
 		 * the video bus direction set to input.
 		 */
 		set_videobus_dir(zr, 0);
-		decoder_command(zr, VIDIOC_STREAMON, 0);
+		decoder_call(zr, video, s_stream, 1);
 		route.input = 0;
-		encoder_command(zr, VIDIOC_INT_S_VIDEO_ROUTING, &route);
+		encoder_call(zr, video, s_routing, &route);
 
 		/* Take the JPEG codec and the VFE out of sleep */
 		jpeg_codec_sleep(zr, 0);
@@ -1048,10 +1045,10 @@ zr36057_enable_jpg (struct zoran          *zr,
 		/* In motion decompression mode, the decoder output must be disabled, and
 		 * the video bus direction set to output.
 		 */
-		decoder_command(zr, VIDIOC_STREAMOFF, 0);
+		decoder_call(zr, video, s_stream, 0);
 		set_videobus_dir(zr, 1);
 		route.input = 1;
-		encoder_command(zr, VIDIOC_INT_S_VIDEO_ROUTING, &route);
+		encoder_call(zr, video, s_routing, &route);
 
 		/* Take the JPEG codec and the VFE out of sleep */
 		jpeg_codec_sleep(zr, 0);
@@ -1095,9 +1092,9 @@ zr36057_enable_jpg (struct zoran          *zr,
 		jpeg_codec_sleep(zr, 1);
 		zr36057_adjust_vfe(zr, mode);
 
-		decoder_command(zr, VIDIOC_STREAMON, 0);
+		decoder_call(zr, video, s_stream, 1);
 		route.input = 0;
-		encoder_command(zr, VIDIOC_INT_S_VIDEO_ROUTING, &route);
+		encoder_call(zr, video, s_routing, &route);
 
 		dprintk(2, KERN_INFO "%s: enable_jpg(IDLE)\n", ZR_DEVNAME(zr));
 		break;
@@ -1210,7 +1207,7 @@ static void zoran_restart(struct zoran *zr)
 	int status = 0, mode;
 
 	if (zr->codec_mode == BUZ_MODE_MOTION_COMPRESS) {
-		decoder_command(zr, VIDIOC_INT_G_INPUT_STATUS, &status);
+		decoder_call(zr, video, g_input_status, &status);
 		mode = CODEC_DO_COMPRESSION;
 	} else {
 		status = V4L2_IN_ST_NO_SIGNAL;
@@ -1590,14 +1587,14 @@ zoran_init_hardware (struct zoran *zr)
 
 	route.input = zr->card.input[zr->input].muxsel;
 
-	decoder_command(zr, VIDIOC_INT_INIT, NULL);
-	decoder_command(zr, VIDIOC_S_STD, &zr->norm);
-	decoder_command(zr, VIDIOC_INT_S_VIDEO_ROUTING, &route);
+	decoder_call(zr, core, init, 0);
+	decoder_s_std(zr, zr->norm);
+	decoder_s_routing(zr, &route);
 
-	encoder_command(zr, VIDIOC_INT_INIT, NULL);
-	encoder_command(zr, VIDIOC_INT_S_STD_OUTPUT, &zr->norm);
+	encoder_call(zr, core, init, 0);
+	encoder_call(zr, video, s_std_output, zr->norm);
 	route.input = 0;
-	encoder_command(zr, VIDIOC_INT_S_VIDEO_ROUTING, &route);
+	encoder_call(zr, video, s_routing, &route);
 
 	/* toggle JPEG codec sleep to sync PLL */
 	jpeg_codec_sleep(zr, 1);
@@ -1662,37 +1659,30 @@ zr36057_init_vfe (struct zoran *zr)
  * Interface to decoder and encoder chips using i2c bus
  */
 
-int
-decoder_command (struct zoran *zr,
-		 int           cmd,
-		 void         *data)
+int decoder_s_std(struct zoran *zr, v4l2_std_id std)
 {
-	if (zr->decoder == NULL)
-		return -EIO;
-
-	if (zr->card.type == LML33 &&
-	    (cmd == VIDIOC_S_STD || cmd == VIDIOC_INT_S_VIDEO_ROUTING)) {
-		int res;
+	int res;
 
-		// Bt819 needs to reset its FIFO buffer using #FRST pin and
-		// LML33 card uses GPIO(7) for that.
+	/* Bt819 needs to reset its FIFO buffer using #FRST pin and
+	   LML33 card uses GPIO(7) for that. */
+	if (zr->card.type == LML33)
 		GPIO(zr, 7, 0);
-		res = zr->decoder->driver->command(zr->decoder, cmd, data);
-		// Pull #FRST high.
-		GPIO(zr, 7, 1);
-		return res;
-	} else
-		return zr->decoder->driver->command(zr->decoder, cmd,
-						    data);
+	res = decoder_call(zr, tuner, s_std, std);
+	if (zr->card.type == LML33)
+		GPIO(zr, 7, 1); /* Pull #FRST high. */
+	return res;
 }
 
-int
-encoder_command (struct zoran *zr,
-		 int           cmd,
-		 void         *data)
+int decoder_s_routing(struct zoran *zr, struct v4l2_routing *route)
 {
-	if (zr->encoder == NULL)
-		return -1;
+	int res;
 
-	return zr->encoder->driver->command(zr->encoder, cmd, data);
+	/* Bt819 needs to reset its FIFO buffer using #FRST pin and
+	   LML33 card uses GPIO(7) for that. */
+	if (zr->card.type == LML33)
+		GPIO(zr, 7, 0);
+	res = decoder_call(zr, video, s_routing, route);
+	if (zr->card.type == LML33)
+		GPIO(zr, 7, 1); /* Pull #FRST high. */
+	return res;
 }
diff --git a/drivers/media/video/zoran/zoran_device.h b/drivers/media/video/zoran/zoran_device.h
index 74c6c8edb7d0..14d4e7aa6cea 100644
--- a/drivers/media/video/zoran/zoran_device.h
+++ b/drivers/media/video/zoran/zoran_device.h
@@ -87,11 +87,12 @@ extern int jpg_bufsize;
 extern int pass_through;
 
 /* i2c */
-extern int decoder_command(struct zoran *zr,
-			   int cmd,
-			   void *data);
-extern int encoder_command(struct zoran *zr,
-			   int cmd,
-			   void *data);
+#define decoder_call(zr, o, f, args...) \
+	v4l2_subdev_call(zr->decoder, o, f, ##args)
+#define encoder_call(zr, o, f, args...) \
+	v4l2_subdev_call(zr->encoder, o, f, ##args)
+
+int decoder_s_std(struct zoran *zr, v4l2_std_id std);
+int decoder_s_routing(struct zoran *zr, struct v4l2_routing *route);
 
 #endif				/* __ZORAN_DEVICE_H__ */
diff --git a/drivers/media/video/zoran/zoran_driver.c b/drivers/media/video/zoran/zoran_driver.c
index 611fc7f18e16..b027a68e8c67 100644
--- a/drivers/media/video/zoran/zoran_driver.c
+++ b/drivers/media/video/zoran/zoran_driver.c
@@ -963,10 +963,6 @@ static int zoran_open(struct file *file)
 
 	lock_kernel();
 
-	/* see fs/device.c - the kernel already locks during open(),
-	 * so locking ourselves only causes deadlocks */
-	/*mutex_lock(&zr->resource_lock);*/
-
 	if (zr->user >= 2048) {
 		dprintk(1, KERN_ERR "%s: too many users (%d) on device\n",
 			ZR_DEVNAME(zr), zr->user);
@@ -974,32 +970,6 @@ static int zoran_open(struct file *file)
 		goto fail_unlock;
 	}
 
-	if (!zr->decoder) {
-		dprintk(1,
-			KERN_ERR "%s: no TV decoder loaded for device!\n",
-			ZR_DEVNAME(zr));
-		res = -EIO;
-		goto fail_unlock;
-	}
-
-	if (!try_module_get(zr->decoder->driver->driver.owner)) {
-		dprintk(1,
-			KERN_ERR
-			"%s: failed to grab ownership of video decoder\n",
-			ZR_DEVNAME(zr));
-		res = -EIO;
-		goto fail_unlock;
-	}
-	if (zr->encoder &&
-	    !try_module_get(zr->encoder->driver->driver.owner)) {
-		dprintk(1,
-			KERN_ERR
-			"%s: failed to grab ownership of video encoder\n",
-			ZR_DEVNAME(zr));
-		res = -EIO;
-		goto fail_decoder;
-	}
-
 	/* now, create the open()-specific file_ops struct */
 	fh = kzalloc(sizeof(struct zoran_fh), GFP_KERNEL);
 	if (!fh) {
@@ -1008,7 +978,7 @@ static int zoran_open(struct file *file)
 			"%s: zoran_open() - allocation of zoran_fh failed\n",
 			ZR_DEVNAME(zr));
 		res = -ENOMEM;
-		goto fail_encoder;
+		goto fail_unlock;
 	}
 	/* used to be BUZ_MAX_WIDTH/HEIGHT, but that gives overflows
 	 * on norm-change! */
@@ -1047,11 +1017,6 @@ static int zoran_open(struct file *file)
 
 fail_fh:
 	kfree(fh);
-fail_encoder:
-	if (zr->encoder)
-		module_put(zr->encoder->driver->driver.owner);
-fail_decoder:
-	module_put(zr->decoder->driver->driver.owner);
 fail_unlock:
 	unlock_kernel();
 
@@ -1104,8 +1069,8 @@ zoran_close(struct file  *file)
 		if (!pass_through) {	/* Switch to color bar */
 			struct v4l2_routing route = { 2, 0 };
 
-			decoder_command(zr, VIDIOC_STREAMOFF, 0);
-			encoder_command(zr, VIDIOC_INT_S_VIDEO_ROUTING, &route);
+			decoder_call(zr, video, s_stream, 0);
+			encoder_call(zr, video, s_routing, &route);
 		}
 	}
 
@@ -1113,13 +1078,6 @@ zoran_close(struct file  *file)
 	kfree(fh->overlay_mask);
 	kfree(fh);
 
-	/* release locks on the i2c modules */
-	module_put(zr->decoder->driver->driver.owner);
-	if (zr->encoder)
-		module_put(zr->encoder->driver->driver.owner);
-
-	/*mutex_unlock(&zr->resource_lock);*/
-
 	dprintk(4, KERN_INFO "%s: zoran_close() done\n", ZR_DEVNAME(zr));
 
 	return 0;
@@ -1567,20 +1525,20 @@ zoran_set_norm (struct zoran *zr,
 		int status = 0;
 		v4l2_std_id std = 0;
 
-		decoder_command(zr, VIDIOC_QUERYSTD, &std);
-		decoder_command(zr, VIDIOC_S_STD, &std);
+		decoder_call(zr, video, querystd, &std);
+		decoder_s_std(zr, std);
 
 		/* let changes come into effect */
 		ssleep(2);
 
-		decoder_command(zr, VIDIOC_INT_G_INPUT_STATUS, &status);
+		decoder_call(zr, video, g_input_status, &status);
 		if (status & V4L2_IN_ST_NO_SIGNAL) {
 			dprintk(1,
 				KERN_ERR
 				"%s: set_norm() - no norm detected\n",
 				ZR_DEVNAME(zr));
 			/* reset norm */
-			decoder_command(zr, VIDIOC_S_STD, &zr->norm);
+			decoder_s_std(zr, zr->norm);
 			return -EIO;
 		}
 
@@ -1599,8 +1557,8 @@ zoran_set_norm (struct zoran *zr,
 	if (on)
 		zr36057_overlay(zr, 0);
 
-	decoder_command(zr, VIDIOC_S_STD, &norm);
-	encoder_command(zr, VIDIOC_INT_S_STD_OUTPUT, &norm);
+	decoder_s_std(zr, norm);
+	encoder_call(zr, video, s_std_output, norm);
 
 	if (on)
 		zr36057_overlay(zr, 1);
@@ -1641,7 +1599,7 @@ zoran_set_input (struct zoran *zr,
 	route.input = zr->card.input[input].muxsel;
 	zr->input = input;
 
-	decoder_command(zr, VIDIOC_INT_S_VIDEO_ROUTING, &route);
+	decoder_s_routing(zr, &route);
 
 	return 0;
 }
@@ -1886,18 +1844,18 @@ jpgreqbuf_unlock_and_return:
 			goto gstat_unlock_and_return;
 		}
 
-		decoder_command(zr, VIDIOC_INT_S_VIDEO_ROUTING, &route);
+		decoder_s_routing(zr, &route);
 
 		/* sleep 1 second */
 		ssleep(1);
 
 		/* Get status of video decoder */
-		decoder_command(zr, VIDIOC_QUERYSTD, &norm);
-		decoder_command(zr, VIDIOC_INT_G_INPUT_STATUS, &status);
+		decoder_call(zr, video, querystd, &norm);
+		decoder_call(zr, video, g_input_status, &status);
 
 		/* restore previous input and norm */
 		route.input = zr->card.input[zr->input].muxsel;
-		decoder_command(zr, VIDIOC_INT_S_VIDEO_ROUTING, &route);
+		decoder_s_routing(zr, &route);
 gstat_unlock_and_return:
 		mutex_unlock(&zr->resource_lock);
 
@@ -2836,7 +2794,7 @@ static int zoran_queryctrl(struct file *file, void *__fh,
 	    ctrl->id > V4L2_CID_HUE)
 		return -EINVAL;
 
-	decoder_command(zr, VIDIOC_QUERYCTRL, ctrl);
+	decoder_call(zr, core, queryctrl, ctrl);
 
 	return 0;
 }
@@ -2852,7 +2810,7 @@ static int zoran_g_ctrl(struct file *file, void *__fh, struct v4l2_control *ctrl
 		return -EINVAL;
 
 	mutex_lock(&zr->resource_lock);
-	decoder_command(zr, VIDIOC_G_CTRL, ctrl);
+	decoder_call(zr, core, g_ctrl, ctrl);
 	mutex_unlock(&zr->resource_lock);
 
 	return 0;
@@ -2869,7 +2827,7 @@ static int zoran_s_ctrl(struct file *file, void *__fh, struct v4l2_control *ctrl
 		return -EINVAL;
 
 	mutex_lock(&zr->resource_lock);
-	decoder_command(zr, VIDIOC_S_CTRL, ctrl);
+	decoder_call(zr, core, s_ctrl, ctrl);
 	mutex_unlock(&zr->resource_lock);
 
 	return 0;
@@ -2924,7 +2882,7 @@ static int zoran_enum_input(struct file *file, void *__fh,
 
 	/* Get status of video decoder */
 	mutex_lock(&zr->resource_lock);
-	decoder_command(zr, VIDIOC_INT_G_INPUT_STATUS, &inp->status);
+	decoder_call(zr, video, g_input_status, &inp->status);
 	mutex_unlock(&zr->resource_lock);
 	return 0;
 }