V4L/DVB (10537): saa6588: convert to v4l2_subdev.

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

1 files changed, 71 insertions, 44 deletions

diff --git a/drivers/media/video/saa6588.c b/drivers/media/video/saa6588.c
index 7c74ac4dd183..4d31c320ac17 100644
--- a/drivers/media/video/saa6588.c
+++ b/drivers/media/video/saa6588.c
@@ -32,7 +32,7 @@
 #include <asm/uaccess.h>
 
 #include <media/rds.h>
-#include <media/v4l2-common.h>
+#include <media/v4l2-device.h>
 #include <media/v4l2-i2c-drv-legacy.h>
 
 /* Addresses to scan */
@@ -74,7 +74,7 @@ MODULE_LICENSE("GPL");
 #define dprintk     if (debug) printk
 
 struct saa6588 {
-        struct i2c_client *client;
+        struct v4l2_subdev sd;
         struct work_struct work;
         struct timer_list timer;
         spinlock_t lock;
@@ -88,6 +88,11 @@ struct saa6588 {
         int data_available_for_read;
 };
 
+static inline struct saa6588 *to_saa6588(struct v4l2_subdev *sd)
+{
+        return container_of(sd, struct saa6588, sd);
+}
+
 /* ---------------------------------------------------------------------- */
 
 /*
@@ -257,6 +262,7 @@ static void block_to_buf(struct saa6588 *s, unsigned char *blockbuf)
 
 static void saa6588_i2c_poll(struct saa6588 *s)
 {
+        struct i2c_client *client = v4l2_get_subdevdata(&s->sd);
         unsigned long flags;
         unsigned char tmpbuf[6];
         unsigned char blocknum;
@@ -264,7 +270,7 @@ static void saa6588_i2c_poll(struct saa6588 *s)
 
         /* Although we only need 3 bytes, we have to read at least 6.
            SAA6588 returns garbage otherwise */
-        if (6 != i2c_master_recv(s->client, &tmpbuf[0], 6)) {
+        if (6 != i2c_master_recv(client, &tmpbuf[0], 6)) {
                 if (debug > 1)
                         dprintk(PREFIX "read error!\n");
                 return;
@@ -332,6 +338,7 @@ static void saa6588_work(struct work_struct *work)
 
 static int saa6588_configure(struct saa6588 *s)
 {
+        struct i2c_client *client = v4l2_get_subdevdata(&s->sd);
         unsigned char buf[3];
         int rc;
 
@@ -379,7 +386,7 @@ static int saa6588_configure(struct saa6588 *s)
         dprintk(PREFIX "writing: 0w=0x%02x 1w=0x%02x 2w=0x%02x\n",
                 buf[0], buf[1], buf[2]);
 
-        rc = i2c_master_send(s->client, buf, 3);
+        rc = i2c_master_send(client, buf, 3);
         if (rc != 3)
                 printk(PREFIX "i2c i/o error: rc == %d (should be 3)\n", rc);
 
@@ -388,10 +395,64 @@ static int saa6588_configure(struct saa6588 *s)
 
 /* ---------------------------------------------------------------------- */
 
+static long saa6588_ioctl(struct v4l2_subdev *sd, unsigned int cmd, void *arg)
+{
+        struct saa6588 *s = to_saa6588(sd);
+        struct rds_command *a = arg;
+
+        switch (cmd) {
+                /* --- open() for /dev/radio --- */
+        case RDS_CMD_OPEN:
+                a->result = 0;  /* return error if chip doesn't work ??? */
+                break;
+                /* --- close() for /dev/radio --- */
+        case RDS_CMD_CLOSE:
+                s->data_available_for_read = 1;
+                wake_up_interruptible(&s->read_queue);
+                a->result = 0;
+                break;
+                /* --- read() for /dev/radio --- */
+        case RDS_CMD_READ:
+                read_from_buf(s, a);
+                break;
+                /* --- poll() for /dev/radio --- */
+        case RDS_CMD_POLL:
+                a->result = 0;
+                if (s->data_available_for_read) {
+                        a->result |= POLLIN | POLLRDNORM;
+                }
+                poll_wait(a->instance, &s->read_queue, a->event_list);
+                break;
+
+        default:
+                /* nothing */
+                return -ENOIOCTLCMD;
+        }
+        return 0;
+}
+
+static int saa6588_command(struct i2c_client *client, unsigned cmd, void *arg)
+{
+        return v4l2_subdev_command(i2c_get_clientdata(client), cmd, arg);
+}
+
+/* ----------------------------------------------------------------------- */
+
+static const struct v4l2_subdev_core_ops saa6588_core_ops = {
+        .ioctl = saa6588_ioctl,
+};
+
+static const struct v4l2_subdev_ops saa6588_ops = {
+        .core = &saa6588_core_ops,
+};
+
+/* ---------------------------------------------------------------------- */
+
 static int saa6588_probe(struct i2c_client *client,
                          const struct i2c_device_id *id)
 {
         struct saa6588 *s;
+        struct v4l2_subdev *sd;
 
         v4l_info(client, "saa6588 found @ 0x%x (%s)\n",
                         client->addr << 1, client->adapter->name);
@@ -400,7 +461,6 @@ static int saa6588_probe(struct i2c_client *client,
         if (s == NULL)
                 return -ENOMEM;
 
-        s->client = client;
         s->buf_size = bufblocks * 3;
 
         s->buffer = kmalloc(s->buf_size, GFP_KERNEL);
@@ -408,6 +468,8 @@ static int saa6588_probe(struct i2c_client *client,
                 kfree(s);
                 return -ENOMEM;
         }
+        sd = &s->sd;
+        v4l2_i2c_subdev_init(sd, client, &saa6588_ops);
         spin_lock_init(&s->lock);
         s->block_count = 0;
         s->wr_index = 0;
@@ -415,7 +477,6 @@ static int saa6588_probe(struct i2c_client *client,
         s->last_blocknum = 0xff;
         init_waitqueue_head(&s->read_queue);
         s->data_available_for_read = 0;
-        i2c_set_clientdata(client, s);
 
         saa6588_configure(s);
 
@@ -430,7 +491,10 @@ static int saa6588_probe(struct i2c_client *client,
 
 static int saa6588_remove(struct i2c_client *client)
 {
-        struct saa6588 *s = i2c_get_clientdata(client);
+        struct v4l2_subdev *sd = i2c_get_clientdata(client);
+        struct saa6588 *s = to_saa6588(sd);
+
+        v4l2_device_unregister_subdev(sd);
 
         del_timer_sync(&s->timer);
         flush_scheduled_work();
@@ -440,43 +504,6 @@ static int saa6588_remove(struct i2c_client *client)
         return 0;
 }
 
-static int saa6588_command(struct i2c_client *client, unsigned int cmd,
-                                                        void *arg)
-{
-        struct saa6588 *s = i2c_get_clientdata(client);
-        struct rds_command *a = (struct rds_command *)arg;
-
-        switch (cmd) {
-                /* --- open() for /dev/radio --- */
-        case RDS_CMD_OPEN:
-                a->result = 0;  /* return error if chip doesn't work ??? */
-                break;
-                /* --- close() for /dev/radio --- */
-        case RDS_CMD_CLOSE:
-                s->data_available_for_read = 1;
-                wake_up_interruptible(&s->read_queue);
-                a->result = 0;
-                break;
-                /* --- read() for /dev/radio --- */
-        case RDS_CMD_READ:
-                read_from_buf(s, a);
-                break;
-                /* --- poll() for /dev/radio --- */
-        case RDS_CMD_POLL:
-                a->result = 0;
-                if (s->data_available_for_read) {
-                        a->result |= POLLIN | POLLRDNORM;
-                }
-                poll_wait(a->instance, &s->read_queue, a->event_list);
-                break;
-
-        default:
-                /* nothing */
-                break;
-        }
-        return 0;
-}
-
 /* ----------------------------------------------------------------------- */
 
 static const struct i2c_device_id saa6588_id[] = {