V4L/DVB (10499): saa7146: convert saa7146 and mxb in particular to v4l2_subdev.

Modified mxb to load the i2c modules through v4l2_subdev. So no more probing.
Modified tea6415c and tea6420 to use the standard routing ops to do the
routing, rather than using private commands. Dropped the private commands
from tda9840 (they were never used except during initialization of the
module).

Added saa7146 support for VIDIOC_DBG_G_CHIP_IDENT.

Converted saa5246a and saa5249 to v4l2_subdev.

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

1 files changed, 9 insertions, 72 deletions

diff --git a/drivers/media/video/tda9840.c b/drivers/media/video/tda9840.c
index ae46a28dd05..fe1158094c2 100644
--- a/drivers/media/video/tda9840.c
+++ b/drivers/media/video/tda9840.c
@@ -30,8 +30,8 @@
 #include <linux/ioctl.h>
 #include <linux/i2c.h>
 #include <media/v4l2-device.h>
-#include <media/v4l2-i2c-drv-legacy.h>
-#include "tda9840.h"
+#include <media/v4l2-chip-ident.h>
+#include <media/v4l2-i2c-drv.h>
 
 MODULE_AUTHOR("Michael Hunold <michael@mihu.de>");
 MODULE_DESCRIPTION("tda9840 driver");
@@ -56,11 +56,6 @@ MODULE_PARM_DESC(debug, "Debug level (0-1)");
 #define TDA9840_SET_BOTH_R              0x16
 #define TDA9840_SET_EXTERNAL            0x7a
 
-/* addresses to scan, found only at 0x42 (7-Bit) */
-static unsigned short normal_i2c[] = { I2C_ADDR_TDA9840, I2C_CLIENT_END };
-
-/* magic definition of all other variables and things */
-I2C_CLIENT_INSMOD;
 
 static void tda9840_write(struct v4l2_subdev *sd, u8 reg, u8 val)
 {
@@ -137,60 +132,17 @@ static int tda9840_g_tuner(struct v4l2_subdev *sd, struct v4l2_tuner *t)
 	return 0;
 }
 
-static long tda9840_ioctl(struct v4l2_subdev *sd, unsigned cmd, void *arg)
+static int tda9840_g_chip_ident(struct v4l2_subdev *sd, struct v4l2_dbg_chip_ident *chip)
 {
-	int byte;
-
-	switch (cmd) {
-	case TDA9840_LEVEL_ADJUST:
-		byte = *(int *)arg;
-		v4l2_dbg(1, debug, sd, "TDA9840_LEVEL_ADJUST: %d\n", byte);
-
-		/* check for correct range */
-		if (byte > 25 || byte < -20)
-			return -EINVAL;
-
-		/* calculate actual value to set, see specs, page 18 */
-		byte /= 5;
-		if (0 < byte)
-			byte += 0x8;
-		else
-			byte = -byte;
-		tda9840_write(sd, LEVEL_ADJUST, byte);
-		break;
-
-	case TDA9840_STEREO_ADJUST:
-		byte = *(int *)arg;
-		v4l2_dbg(1, debug, sd, "TDA9840_STEREO_ADJUST: %d\n", byte);
-
-		/* check for correct range */
-		if (byte > 25 || byte < -24)
-			return -EINVAL;
-
-		/* calculate actual value to set */
-		byte /= 5;
-		if (0 < byte)
-			byte += 0x20;
-		else
-			byte = -byte;
-
-		tda9840_write(sd, STEREO_ADJUST, byte);
-		break;
-	default:
-		return -ENOIOCTLCMD;
-	}
-	return 0;
-}
+	struct i2c_client *client = v4l2_get_subdevdata(sd);
 
-static int tda9840_command(struct i2c_client *client, unsigned cmd, void *arg)
-{
-	return v4l2_subdev_command(i2c_get_clientdata(client), cmd, arg);
+	return v4l2_chip_ident_i2c_client(client, chip, V4L2_IDENT_TDA9840, 0);
 }
 
 /* ----------------------------------------------------------------------- */
 
 static const struct v4l2_subdev_core_ops tda9840_core_ops = {
-	.ioctl = tda9840_ioctl,
+	.g_chip_ident = tda9840_g_chip_ident,
 };
 
 static const struct v4l2_subdev_tuner_ops tda9840_tuner_ops = {
@@ -209,8 +161,6 @@ static int tda9840_probe(struct i2c_client *client,
 			  const struct i2c_device_id *id)
 {
 	struct v4l2_subdev *sd;
-	int result;
-	int byte;
 
 	/* let's see whether this adapter can support what we need */
 	if (!i2c_check_functionality(client->adapter,
@@ -227,15 +177,9 @@ static int tda9840_probe(struct i2c_client *client,
 	v4l2_i2c_subdev_init(sd, client, &tda9840_ops);
 
 	/* set initial values for level & stereo - adjustment, mode */
-	byte = 0;
-	result = tda9840_ioctl(sd, TDA9840_LEVEL_ADJUST, &byte);
-	result |= tda9840_ioctl(sd, TDA9840_STEREO_ADJUST, &byte);
+	tda9840_write(sd, LEVEL_ADJUST, 0);
+	tda9840_write(sd, STEREO_ADJUST, 0);
 	tda9840_write(sd, SWITCH, TDA9840_SET_STEREO);
-	if (result) {
-		v4l2_dbg(1, debug, sd, "could not initialize tda9840\n");
-		kfree(sd);
-		return -ENODEV;
-	}
 	return 0;
 }
 
@@ -248,12 +192,7 @@ static int tda9840_remove(struct i2c_client *client)
 	return 0;
 }
 
-static int tda9840_legacy_probe(struct i2c_adapter *adapter)
-{
-	/* Let's see whether this is a known adapter we can attach to.
-	   Prevents conflicts with tvaudio.c. */
-	return adapter->id == I2C_HW_SAA7146;
-}
+
 static const struct i2c_device_id tda9840_id[] = {
 	{ "tda9840", 0 },
 	{ }
@@ -262,9 +201,7 @@ MODULE_DEVICE_TABLE(i2c, tda9840_id);
 
 static struct v4l2_i2c_driver_data v4l2_i2c_data = {
 	.name = "tda9840",
-	.command = tda9840_command,
 	.probe = tda9840_probe,
 	.remove = tda9840_remove,
-	.legacy_probe = tda9840_legacy_probe,
 	.id_table = tda9840_id,
 };