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, 45 insertions, 24 deletions

diff --git a/drivers/media/video/saa5246a.c b/drivers/media/video/saa5246a.c
index 8f117bd50b86..da47b2f05288 100644
--- a/drivers/media/video/saa5246a.c
+++ b/drivers/media/video/saa5246a.c
@@ -46,10 +46,11 @@
 #include <linux/smp_lock.h>
 #include <linux/mutex.h>
 #include <linux/videotext.h>
-#include <linux/videodev.h>
-#include <media/v4l2-common.h>
+#include <linux/videodev2.h>
+#include <media/v4l2-device.h>
+#include <media/v4l2-chip-ident.h>
 #include <media/v4l2-ioctl.h>
-#include <media/v4l2-i2c-drv-legacy.h>
+#include <media/v4l2-i2c-drv.h>
 
 MODULE_AUTHOR("Michael Geng <linux@MichaelGeng.de>");
 MODULE_DESCRIPTION("Philips SAA5246A, SAA5281 Teletext decoder driver");
@@ -388,13 +389,19 @@ MODULE_LICENSE("GPL");
 
 struct saa5246a_device
 {
+	struct v4l2_subdev sd;
+	struct video_device *vdev;
 	u8     pgbuf[NUM_DAUS][VTX_VIRTUALSIZE];
 	int    is_searching[NUM_DAUS];
-	struct i2c_client *client;
 	unsigned long in_use;
 	struct mutex lock;
 };
 
+static inline struct saa5246a_device *to_dev(struct v4l2_subdev *sd)
+{
+	return container_of(sd, struct saa5246a_device, sd);
+}
+
 static struct video_device saa_template;	/* Declared near bottom */
 
 /*
@@ -403,12 +410,13 @@ static struct video_device saa_template;	/* Declared near bottom */
 
 static int i2c_sendbuf(struct saa5246a_device *t, int reg, int count, u8 *data)
 {
+	struct i2c_client *client = v4l2_get_subdevdata(&t->sd);
 	char buf[64];
 
 	buf[0] = reg;
 	memcpy(buf+1, data, count);
 
-	if(i2c_master_send(t->client, buf, count+1)==count+1)
+	if (i2c_master_send(client, buf, count + 1) == count + 1)
 		return 0;
 	return -1;
 }
@@ -436,7 +444,9 @@ static int i2c_senddata(struct saa5246a_device *t, ...)
  */
 static int i2c_getdata(struct saa5246a_device *t, int count, u8 *buf)
 {
-	if(i2c_master_recv(t->client, buf, count)!=count)
+	struct i2c_client *client = v4l2_get_subdevdata(&t->sd);
+
+	if (i2c_master_recv(client, buf, count) != count)
 		return -1;
 	return 0;
 }
@@ -961,9 +971,6 @@ static int saa5246a_open(struct file *file)
 {
 	struct saa5246a_device *t = video_drvdata(file);
 
-	if (t->client == NULL)
-		return -ENODEV;
-
 	if (test_and_set_bit(0, &t->in_use))
 		return -EBUSY;
 
@@ -1033,18 +1040,29 @@ static struct video_device saa_template =
 	.minor    = -1,
 };
 
-/* Addresses to scan */
-static unsigned short normal_i2c[] = { 0x22 >> 1, I2C_CLIENT_END };
+static int saa5246a_g_chip_ident(struct v4l2_subdev *sd, struct v4l2_dbg_chip_ident *chip)
+{
+	struct i2c_client *client = v4l2_get_subdevdata(sd);
+
+	return v4l2_chip_ident_i2c_client(client, chip, V4L2_IDENT_SAA5246A, 0);
+}
+
+static const struct v4l2_subdev_core_ops saa5246a_core_ops = {
+	.g_chip_ident = saa5246a_g_chip_ident,
+};
+
+static const struct v4l2_subdev_ops saa5246a_ops = {
+	.core = &saa5246a_core_ops,
+};
 
-I2C_CLIENT_INSMOD;
 
 static int saa5246a_probe(struct i2c_client *client,
 			const struct i2c_device_id *id)
 {
 	int pgbuf;
 	int err;
-	struct video_device *vd;
 	struct saa5246a_device *t;
+	struct v4l2_subdev *sd;
 
 	v4l_info(client, "chip found @ 0x%x (%s)\n",
 			client->addr << 1, client->adapter->name);
@@ -1053,40 +1071,43 @@ static int saa5246a_probe(struct i2c_client *client,
 	t = kzalloc(sizeof(*t), GFP_KERNEL);
 	if (t == NULL)
 		return -ENOMEM;
+	sd = &t->sd;
+	v4l2_i2c_subdev_init(sd, client, &saa5246a_ops);
 	mutex_init(&t->lock);
 
 	/* Now create a video4linux device */
-	vd = video_device_alloc();
-	if (vd == NULL) {
+	t->vdev = video_device_alloc();
+	if (t->vdev == NULL) {
 		kfree(t);
 		return -ENOMEM;
 	}
-	i2c_set_clientdata(client, vd);
-	memcpy(vd, &saa_template, sizeof(*vd));
+	memcpy(t->vdev, &saa_template, sizeof(*t->vdev));
 
 	for (pgbuf = 0; pgbuf < NUM_DAUS; pgbuf++) {
 		memset(t->pgbuf[pgbuf], ' ', sizeof(t->pgbuf[0]));
 		t->is_searching[pgbuf] = false;
 	}
-	video_set_drvdata(vd, t);
+	video_set_drvdata(t->vdev, t);
 
 	/* Register it */
-	err = video_register_device(vd, VFL_TYPE_VTX, -1);
+	err = video_register_device(t->vdev, VFL_TYPE_VTX, -1);
 	if (err < 0) {
 		kfree(t);
-		video_device_release(vd);
+		video_device_release(t->vdev);
+		t->vdev = NULL;
 		return err;
 	}
-	t->client = client;
 	return 0;
 }
 
 static int saa5246a_remove(struct i2c_client *client)
 {
-	struct video_device *vd = i2c_get_clientdata(client);
+	struct v4l2_subdev *sd = i2c_get_clientdata(client);
+	struct saa5246a_device *t = to_dev(sd);
 
-	video_unregister_device(vd);
-	kfree(video_get_drvdata(vd));
+	video_unregister_device(t->vdev);
+	v4l2_device_unregister_subdev(sd);
+	kfree(t);
 	return 0;
 }