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Diffstat (limited to 'drivers/media/video/adv7175.c')
-rw-r--r--drivers/media/video/adv7175.c585
1 files changed, 585 insertions, 0 deletions
diff --git a/drivers/media/video/adv7175.c b/drivers/media/video/adv7175.c
new file mode 100644
index 000000000000..95d0974b0ab5
--- /dev/null
+++ b/drivers/media/video/adv7175.c
@@ -0,0 +1,585 @@
+/*
+ * adv7175 - adv7175a video encoder driver version 0.0.3
+ *
+ * Copyright (C) 1998 Dave Perks <dperks@ibm.net>
+ * Copyright (C) 1999 Wolfgang Scherr <scherr@net4you.net>
+ * Copyright (C) 2000 Serguei Miridonov <mirsev@cicese.mx>
+ * - some corrections for Pinnacle Systems Inc. DC10plus card.
+ *
+ * Changes by Ronald Bultje <rbultje@ronald.bitfreak.net>
+ * - moved over to linux>=2.4.x i2c protocol (9/9/2002)
+ *
+ * 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/module.h>
+#include <linux/init.h>
+#include <linux/delay.h>
+#include <linux/errno.h>
+#include <linux/fs.h>
+#include <linux/kernel.h>
+#include <linux/major.h>
+#include <linux/slab.h>
+#include <linux/mm.h>
+#include <linux/pci.h>
+#include <linux/signal.h>
+#include <asm/io.h>
+#include <asm/pgtable.h>
+#include <asm/page.h>
+#include <linux/sched.h>
+#include <asm/segment.h>
+#include <linux/types.h>
+
+#include <linux/videodev.h>
+#include <asm/uaccess.h>
+
+MODULE_DESCRIPTION("Analog Devices ADV7175 video encoder driver");
+MODULE_AUTHOR("Dave Perks");
+MODULE_LICENSE("GPL");
+
+#include <linux/i2c.h>
+#include <linux/i2c-dev.h>
+
+#define I2C_NAME(s) (s)->name
+
+#include <linux/video_encoder.h>
+
+static int debug = 0;
+module_param(debug, int, 0);
+MODULE_PARM_DESC(debug, "Debug level (0-1)");
+
+#define dprintk(num, format, args...) \
+ do { \
+ if (debug >= num) \
+ printk(format, ##args); \
+ } while (0)
+
+/* ----------------------------------------------------------------------- */
+
+struct adv7175 {
+ unsigned char reg[128];
+
+ int norm;
+ int input;
+ int enable;
+ int bright;
+ int contrast;
+ int hue;
+ int sat;
+};
+
+#define I2C_ADV7175 0xd4
+#define I2C_ADV7176 0x54
+
+static char adv7175_name[] = "adv7175";
+static char adv7176_name[] = "adv7176";
+
+static char *inputs[] = { "pass_through", "play_back", "color_bar" };
+static char *norms[] = { "PAL", "NTSC", "SECAM->PAL (may not work!)" };
+
+/* ----------------------------------------------------------------------- */
+
+static inline int
+adv7175_write (struct i2c_client *client,
+ u8 reg,
+ u8 value)
+{
+ struct adv7175 *encoder = i2c_get_clientdata(client);
+
+ encoder->reg[reg] = value;
+ return i2c_smbus_write_byte_data(client, reg, value);
+}
+
+static inline int
+adv7175_read (struct i2c_client *client,
+ u8 reg)
+{
+ return i2c_smbus_read_byte_data(client, reg);
+}
+
+static int
+adv7175_write_block (struct i2c_client *client,
+ const u8 *data,
+ unsigned int len)
+{
+ int ret = -1;
+ u8 reg;
+
+ /* the adv7175 has an autoincrement function, use it if
+ * the adapter understands raw I2C */
+ if (i2c_check_functionality(client->adapter, I2C_FUNC_I2C)) {
+ /* do raw I2C, not smbus compatible */
+ struct adv7175 *encoder = i2c_get_clientdata(client);
+ struct i2c_msg msg;
+ u8 block_data[32];
+
+ msg.addr = client->addr;
+ msg.flags = 0;
+ while (len >= 2) {
+ msg.buf = (char *) block_data;
+ msg.len = 0;
+ block_data[msg.len++] = reg = data[0];
+ do {
+ block_data[msg.len++] =
+ encoder->reg[reg++] = data[1];
+ len -= 2;
+ data += 2;
+ } while (len >= 2 && data[0] == reg &&
+ msg.len < 32);
+ if ((ret = i2c_transfer(client->adapter,
+ &msg, 1)) < 0)
+ break;
+ }
+ } else {
+ /* do some slow I2C emulation kind of thing */
+ while (len >= 2) {
+ reg = *data++;
+ if ((ret = adv7175_write(client, reg,
+ *data++)) < 0)
+ break;
+ len -= 2;
+ }
+ }
+
+ return ret;
+}
+
+static void
+set_subcarrier_freq (struct i2c_client *client,
+ int pass_through)
+{
+ /* for some reason pass_through NTSC needs
+ * a different sub-carrier freq to remain stable. */
+ if(pass_through)
+ adv7175_write(client, 0x02, 0x00);
+ else
+ adv7175_write(client, 0x02, 0x55);
+
+ adv7175_write(client, 0x03, 0x55);
+ adv7175_write(client, 0x04, 0x55);
+ adv7175_write(client, 0x05, 0x25);
+}
+
+#ifdef ENCODER_DUMP
+static void
+dump (struct i2c_client *client)
+{
+ struct adv7175 *encoder = i2c_get_clientdata(client);
+ int i, j;
+
+ printk(KERN_INFO "%s: registry dump\n", I2C_NAME(client));
+ for (i = 0; i < 182 / 8; i++) {
+ printk("%s: 0x%02x -", I2C_NAME(client), i * 8);
+ for (j = 0; j < 8; j++) {
+ printk(" 0x%02x", encoder->reg[i * 8 + j]);
+ }
+ printk("\n");
+ }
+}
+#endif
+
+/* ----------------------------------------------------------------------- */
+// Output filter: S-Video Composite
+
+#define MR050 0x11 //0x09
+#define MR060 0x14 //0x0c
+
+//---------------------------------------------------------------------------
+
+#define TR0MODE 0x46
+#define TR0RST 0x80
+
+#define TR1CAPT 0x80
+#define TR1PLAY 0x00
+
+static const unsigned char init_common[] = {
+
+ 0x00, MR050, /* MR0, PAL enabled */
+ 0x01, 0x00, /* MR1 */
+ 0x02, 0x0c, /* subc. freq. */
+ 0x03, 0x8c, /* subc. freq. */
+ 0x04, 0x79, /* subc. freq. */
+ 0x05, 0x26, /* subc. freq. */
+ 0x06, 0x40, /* subc. phase */
+
+ 0x07, TR0MODE, /* TR0, 16bit */
+ 0x08, 0x21, /* */
+ 0x09, 0x00, /* */
+ 0x0a, 0x00, /* */
+ 0x0b, 0x00, /* */
+ 0x0c, TR1CAPT, /* TR1 */
+ 0x0d, 0x4f, /* MR2 */
+ 0x0e, 0x00, /* */
+ 0x0f, 0x00, /* */
+ 0x10, 0x00, /* */
+ 0x11, 0x00, /* */
+};
+
+static const unsigned char init_pal[] = {
+ 0x00, MR050, /* MR0, PAL enabled */
+ 0x01, 0x00, /* MR1 */
+ 0x02, 0x0c, /* subc. freq. */
+ 0x03, 0x8c, /* subc. freq. */
+ 0x04, 0x79, /* subc. freq. */
+ 0x05, 0x26, /* subc. freq. */
+ 0x06, 0x40, /* subc. phase */
+};
+
+static const unsigned char init_ntsc[] = {
+ 0x00, MR060, /* MR0, NTSC enabled */
+ 0x01, 0x00, /* MR1 */
+ 0x02, 0x55, /* subc. freq. */
+ 0x03, 0x55, /* subc. freq. */
+ 0x04, 0x55, /* subc. freq. */
+ 0x05, 0x25, /* subc. freq. */
+ 0x06, 0x1a, /* subc. phase */
+};
+
+static int
+adv7175_command (struct i2c_client *client,
+ unsigned int cmd,
+ void *arg)
+{
+ struct adv7175 *encoder = i2c_get_clientdata(client);
+
+ switch (cmd) {
+
+ case 0:
+ /* This is just for testing!!! */
+ adv7175_write_block(client, init_common,
+ sizeof(init_common));
+ adv7175_write(client, 0x07, TR0MODE | TR0RST);
+ adv7175_write(client, 0x07, TR0MODE);
+ break;
+
+ case ENCODER_GET_CAPABILITIES:
+ {
+ struct video_encoder_capability *cap = arg;
+
+ cap->flags = VIDEO_ENCODER_PAL |
+ VIDEO_ENCODER_NTSC |
+ VIDEO_ENCODER_SECAM; /* well, hacky */
+ cap->inputs = 2;
+ cap->outputs = 1;
+ }
+ break;
+
+ case ENCODER_SET_NORM:
+ {
+ int iarg = *(int *) arg;
+
+ switch (iarg) {
+
+ case VIDEO_MODE_NTSC:
+ adv7175_write_block(client, init_ntsc,
+ sizeof(init_ntsc));
+ if (encoder->input == 0)
+ adv7175_write(client, 0x0d, 0x4f); // Enable genlock
+ adv7175_write(client, 0x07, TR0MODE | TR0RST);
+ adv7175_write(client, 0x07, TR0MODE);
+ break;
+
+ case VIDEO_MODE_PAL:
+ adv7175_write_block(client, init_pal,
+ sizeof(init_pal));
+ if (encoder->input == 0)
+ adv7175_write(client, 0x0d, 0x4f); // Enable genlock
+ adv7175_write(client, 0x07, TR0MODE | TR0RST);
+ adv7175_write(client, 0x07, TR0MODE);
+ break;
+
+ case VIDEO_MODE_SECAM: // WARNING! ADV7176 does not support SECAM.
+ /* This is an attempt to convert
+ * SECAM->PAL (typically it does not work
+ * due to genlock: when decoder is in SECAM
+ * and encoder in in PAL the subcarrier can
+ * not be syncronized with horizontal
+ * quency) */
+ adv7175_write_block(client, init_pal,
+ sizeof(init_pal));
+ if (encoder->input == 0)
+ adv7175_write(client, 0x0d, 0x49); // Disable genlock
+ adv7175_write(client, 0x07, TR0MODE | TR0RST);
+ adv7175_write(client, 0x07, TR0MODE);
+ break;
+ default:
+ dprintk(1, KERN_ERR "%s: illegal norm: %d\n",
+ I2C_NAME(client), iarg);
+ return -EINVAL;
+
+ }
+ dprintk(1, KERN_INFO "%s: switched to %s\n", I2C_NAME(client),
+ norms[iarg]);
+ encoder->norm = iarg;
+ }
+ break;
+
+ case ENCODER_SET_INPUT:
+ {
+ int iarg = *(int *) arg;
+
+ /* RJ: *iarg = 0: input is from SAA7110
+ *iarg = 1: input is from ZR36060
+ *iarg = 2: color bar */
+
+ switch (iarg) {
+
+ case 0:
+ adv7175_write(client, 0x01, 0x00);
+
+ if (encoder->norm == VIDEO_MODE_NTSC)
+ set_subcarrier_freq(client, 1);
+
+ adv7175_write(client, 0x0c, TR1CAPT); /* TR1 */
+ if (encoder->norm == VIDEO_MODE_SECAM)
+ adv7175_write(client, 0x0d, 0x49); // Disable genlock
+ else
+ adv7175_write(client, 0x0d, 0x4f); // Enable genlock
+ adv7175_write(client, 0x07, TR0MODE | TR0RST);
+ adv7175_write(client, 0x07, TR0MODE);
+ //udelay(10);
+ break;
+
+ case 1:
+ adv7175_write(client, 0x01, 0x00);
+
+ if (encoder->norm == VIDEO_MODE_NTSC)
+ set_subcarrier_freq(client, 0);
+
+ adv7175_write(client, 0x0c, TR1PLAY); /* TR1 */
+ adv7175_write(client, 0x0d, 0x49);
+ adv7175_write(client, 0x07, TR0MODE | TR0RST);
+ adv7175_write(client, 0x07, TR0MODE);
+ //udelay(10);
+ break;
+
+ case 2:
+ adv7175_write(client, 0x01, 0x80);
+
+ if (encoder->norm == VIDEO_MODE_NTSC)
+ set_subcarrier_freq(client, 0);
+
+ adv7175_write(client, 0x0d, 0x49);
+ adv7175_write(client, 0x07, TR0MODE | TR0RST);
+ adv7175_write(client, 0x07, TR0MODE);
+ //udelay(10);
+ break;
+
+ default:
+ dprintk(1, KERN_ERR "%s: illegal input: %d\n",
+ I2C_NAME(client), iarg);
+ return -EINVAL;
+
+ }
+ dprintk(1, KERN_INFO "%s: switched to %s\n", I2C_NAME(client),
+ inputs[iarg]);
+ encoder->input = iarg;
+ }
+ break;
+
+ case ENCODER_SET_OUTPUT:
+ {
+ int *iarg = arg;
+
+ /* not much choice of outputs */
+ if (*iarg != 0) {
+ return -EINVAL;
+ }
+ }
+ break;
+
+ case ENCODER_ENABLE_OUTPUT:
+ {
+ int *iarg = arg;
+
+ encoder->enable = !!*iarg;
+ }
+ break;
+
+#ifdef ENCODER_DUMP
+ case ENCODER_DUMP:
+ {
+ dump(client);
+ }
+ break;
+#endif
+
+ default:
+ return -EINVAL;
+ }
+
+ return 0;
+}
+
+/* ----------------------------------------------------------------------- */
+
+/*
+ * Generic i2c probe
+ * concerning the addresses: i2c wants 7 bit (without the r/w bit), so '>>1'
+ */
+static unsigned short normal_i2c[] =
+ { I2C_ADV7175 >> 1, (I2C_ADV7175 >> 1) + 1,
+ I2C_ADV7176 >> 1, (I2C_ADV7176 >> 1) + 1,
+ I2C_CLIENT_END
+};
+static unsigned short normal_i2c_range[] = { I2C_CLIENT_END };
+
+static unsigned short probe[2] = { I2C_CLIENT_END, I2C_CLIENT_END };
+static unsigned short probe_range[2] = { I2C_CLIENT_END, I2C_CLIENT_END };
+static unsigned short ignore[2] = { I2C_CLIENT_END, I2C_CLIENT_END };
+static unsigned short ignore_range[2] = { I2C_CLIENT_END, I2C_CLIENT_END };
+static unsigned short force[2] = { I2C_CLIENT_END , I2C_CLIENT_END };
+
+static struct i2c_client_address_data addr_data = {
+ .normal_i2c = normal_i2c,
+ .normal_i2c_range = normal_i2c_range,
+ .probe = probe,
+ .probe_range = probe_range,
+ .ignore = ignore,
+ .ignore_range = ignore_range,
+ .force = force
+};
+
+static struct i2c_driver i2c_driver_adv7175;
+
+static int
+adv7175_detect_client (struct i2c_adapter *adapter,
+ int address,
+ int kind)
+{
+ int i;
+ struct i2c_client *client;
+ struct adv7175 *encoder;
+ char *dname;
+
+ dprintk(1,
+ KERN_INFO
+ "adv7175.c: detecting adv7175 client on address 0x%x\n",
+ address << 1);
+
+ /* Check if the adapter supports the needed features */
+ if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA))
+ return 0;
+
+ client = kmalloc(sizeof(struct i2c_client), GFP_KERNEL);
+ if (client == 0)
+ return -ENOMEM;
+ memset(client, 0, sizeof(struct i2c_client));
+ client->addr = address;
+ client->adapter = adapter;
+ client->driver = &i2c_driver_adv7175;
+ client->flags = I2C_CLIENT_ALLOW_USE;
+ if ((client->addr == I2C_ADV7175 >> 1) ||
+ (client->addr == (I2C_ADV7175 >> 1) + 1)) {
+ dname = adv7175_name;
+ } else if ((client->addr == I2C_ADV7176 >> 1) ||
+ (client->addr == (I2C_ADV7176 >> 1) + 1)) {
+ dname = adv7176_name;
+ } else {
+ /* We should never get here!!! */
+ kfree(client);
+ return 0;
+ }
+ strlcpy(I2C_NAME(client), dname, sizeof(I2C_NAME(client)));
+
+ encoder = kmalloc(sizeof(struct adv7175), GFP_KERNEL);
+ if (encoder == NULL) {
+ kfree(client);
+ return -ENOMEM;
+ }
+ memset(encoder, 0, sizeof(struct adv7175));
+ encoder->norm = VIDEO_MODE_PAL;
+ encoder->input = 0;
+ encoder->enable = 1;
+ i2c_set_clientdata(client, encoder);
+
+ i = i2c_attach_client(client);
+ if (i) {
+ kfree(client);
+ kfree(encoder);
+ return i;
+ }
+
+ i = adv7175_write_block(client, init_common, sizeof(init_common));
+ if (i >= 0) {
+ i = adv7175_write(client, 0x07, TR0MODE | TR0RST);
+ i = adv7175_write(client, 0x07, TR0MODE);
+ i = adv7175_read(client, 0x12);
+ dprintk(1, KERN_INFO "%s_attach: rev. %d at 0x%x\n",
+ I2C_NAME(client), i & 1, client->addr << 1);
+ }
+ if (i < 0) {
+ dprintk(1, KERN_ERR "%s_attach: init error 0x%x\n",
+ I2C_NAME(client), i);
+ }
+
+ return 0;
+}
+
+static int
+adv7175_attach_adapter (struct i2c_adapter *adapter)
+{
+ dprintk(1,
+ KERN_INFO
+ "adv7175.c: starting probe for adapter %s (0x%x)\n",
+ I2C_NAME(adapter), adapter->id);
+ return i2c_probe(adapter, &addr_data, &adv7175_detect_client);
+}
+
+static int
+adv7175_detach_client (struct i2c_client *client)
+{
+ struct adv7175 *encoder = i2c_get_clientdata(client);
+ int err;
+
+ err = i2c_detach_client(client);
+ if (err) {
+ return err;
+ }
+
+ kfree(encoder);
+ kfree(client);
+
+ return 0;
+}
+
+/* ----------------------------------------------------------------------- */
+
+static struct i2c_driver i2c_driver_adv7175 = {
+ .owner = THIS_MODULE,
+ .name = "adv7175", /* name */
+
+ .id = I2C_DRIVERID_ADV7175,
+ .flags = I2C_DF_NOTIFY,
+
+ .attach_adapter = adv7175_attach_adapter,
+ .detach_client = adv7175_detach_client,
+ .command = adv7175_command,
+};
+
+static int __init
+adv7175_init (void)
+{
+ return i2c_add_driver(&i2c_driver_adv7175);
+}
+
+static void __exit
+adv7175_exit (void)
+{
+ i2c_del_driver(&i2c_driver_adv7175);
+}
+
+module_init(adv7175_init);
+module_exit(adv7175_exit);
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