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, 30 insertions, 38 deletions

diff --git a/drivers/media/video/tea6420.c b/drivers/media/video/tea6420.c
index 7546509c828..34922232402 100644
--- a/drivers/media/video/tea6420.c
+++ b/drivers/media/video/tea6420.c
@@ -32,7 +32,8 @@
 #include <linux/ioctl.h>
 #include <linux/i2c.h>
 #include <media/v4l2-device.h>
-#include <media/v4l2-i2c-drv-legacy.h>
+#include <media/v4l2-chip-ident.h>
+#include <media/v4l2-i2c-drv.h>
 #include "tea6420.h"
 
 MODULE_AUTHOR("Michael Hunold <michael@mihu.de>");
@@ -44,24 +45,23 @@ module_param(debug, int, 0644);
 
 MODULE_PARM_DESC(debug, "Debug level (0-1)");
 
-/* addresses to scan, found only at 0x4c and/or 0x4d (7-Bit) */
-static unsigned short normal_i2c[] = { I2C_ADDR_TEA6420_1, I2C_ADDR_TEA6420_2, I2C_CLIENT_END };
-
-/* magic definition of all other variables and things */
-I2C_CLIENT_INSMOD;
 
 /* make a connection between the input 'i' and the output 'o'
-   with gain 'g' for the tea6420-client 'client' (note: i = 6 means 'mute') */
-static int tea6420_switch(struct i2c_client *client, int i, int o, int g)
+   with gain 'g' (note: i = 6 means 'mute') */
+static int tea6420_s_routing(struct v4l2_subdev *sd, const struct v4l2_routing *route)
 {
+	struct i2c_client *client = v4l2_get_subdevdata(sd);
+	int i = route->input;
+	int o = route->output & 0xf;
+	int g = (route->output >> 4) & 0xf;
 	u8 byte;
 	int ret;
 
-	v4l_dbg(1, debug, client, "i=%d, o=%d, g=%d\n", i, o, g);
+	v4l2_dbg(1, debug, sd, "i=%d, o=%d, g=%d\n", i, o, g);
 
 	/* check if the parameters are valid */
 	if (i < 1 || i > 6 || o < 1 || o > 4 || g < 0 || g > 6 || g % 2 != 0)
-		return -1;
+		return -EINVAL;
 
 	byte = ((o - 1) << 5);
 	byte |= (i - 1);
@@ -83,37 +83,33 @@ static int tea6420_switch(struct i2c_client *client, int i, int o, int g)
 
 	ret = i2c_smbus_write_byte(client, byte);
 	if (ret) {
-		v4l_dbg(1, debug, client,
+		v4l2_dbg(1, debug, sd,
 			"i2c_smbus_write_byte() failed, ret:%d\n", ret);
 		return -EIO;
 	}
 	return 0;
 }
 
-static long tea6420_ioctl(struct v4l2_subdev *sd, unsigned cmd, void *arg)
+static int tea6420_g_chip_ident(struct v4l2_subdev *sd, struct v4l2_dbg_chip_ident *chip)
 {
-	if (cmd == TEA6420_SWITCH) {
-		struct i2c_client *client = v4l2_get_subdevdata(sd);
-		struct tea6420_multiplex *a = (struct tea6420_multiplex *)arg;
+	struct i2c_client *client = v4l2_get_subdevdata(sd);
 
-		return tea6420_switch(client, a->in, a->out, a->gain);
-	}
-	return -ENOIOCTLCMD;
-}
-
-static int tea6420_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_TEA6420, 0);
 }
 
 /* ----------------------------------------------------------------------- */
 
 static const struct v4l2_subdev_core_ops tea6420_core_ops = {
-	.ioctl = tea6420_ioctl,
+	.g_chip_ident = tea6420_g_chip_ident,
+};
+
+static const struct v4l2_subdev_audio_ops tea6420_audio_ops = {
+	.s_routing = tea6420_s_routing,
 };
 
 static const struct v4l2_subdev_ops tea6420_ops = {
 	.core = &tea6420_core_ops,
+	.audio = &tea6420_audio_ops,
 };
 
 /* this function is called by i2c_probe */
@@ -130,20 +126,24 @@ static int tea6420_probe(struct i2c_client *client,
 	v4l_info(client, "chip found @ 0x%x (%s)\n",
 			client->addr << 1, client->adapter->name);
 
+	sd = kmalloc(sizeof(struct v4l2_subdev), GFP_KERNEL);
+	if (sd == NULL)
+		return -ENOMEM;
+	v4l2_i2c_subdev_init(sd, client, &tea6420_ops);
+
 	/* set initial values: set "mute"-input to all outputs at gain 0 */
 	err = 0;
 	for (i = 1; i < 5; i++) {
-		err += tea6420_switch(client, 6, i, 0);
+		struct v4l2_routing route;
+
+		route.input = 6;
+		route.output = i;
+		err += tea6420_s_routing(sd, &route);
 	}
 	if (err) {
 		v4l_dbg(1, debug, client, "could not initialize tea6420\n");
 		return -ENODEV;
 	}
-
-	sd = kmalloc(sizeof(struct v4l2_subdev), GFP_KERNEL);
-	if (sd == NULL)
-		return -ENOMEM;
-	v4l2_i2c_subdev_init(sd, client, &tea6420_ops);
 	return 0;
 }
 
@@ -156,12 +156,6 @@ static int tea6420_remove(struct i2c_client *client)
 	return 0;
 }
 
-static int tea6420_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 tea6420_id[] = {
 	{ "tea6420", 0 },
@@ -171,9 +165,7 @@ MODULE_DEVICE_TABLE(i2c, tea6420_id);
 
 static struct v4l2_i2c_driver_data v4l2_i2c_data = {
 	.name = "tea6420",
-	.command = tea6420_command,
 	.probe = tea6420_probe,
 	.remove = tea6420_remove,
-	.legacy_probe = tea6420_legacy_probe,
 	.id_table = tea6420_id,
 };