V4L/DVB (11844): ir-kbd-i2c: Switch to the new-style device binding model

Let card drivers probe for IR receiver devices and instantiate them if
found. Ultimately it would be better if we could stop probing
completely, but I suspect this won't be possible for all card types.

There's certainly room for cleanups. For example, some drivers are
sharing I2C adapter IDs, so they also had to share the list of I2C
addresses being probed for an IR receiver. Now that each driver
explicitly says which addresses should be probed, maybe some addresses
can be dropped from some drivers.

Also, the special cases in saa7134-i2c should probably be handled on a
per-board basis. This would be more efficient and less risky than always
probing extra addresses on all boards. I'll give it a try later.

Signed-off-by: Jean Delvare <khali@linux-fr.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

4 files changed, 22 insertions, 8 deletions

diff --git a/drivers/media/video/em28xx/em28xx-cards.c b/drivers/media/video/em28xx/em28xx-cards.c
index b2aed29e2d74..edba71115a94 100644
--- a/drivers/media/video/em28xx/em28xx-cards.c
+++ b/drivers/media/video/em28xx/em28xx-cards.c
@@ -1912,13 +1912,23 @@ static int em28xx_hint_board(struct em28xx *dev)
 }
 
 /* ----------------------------------------------------------------------- */
-void em28xx_set_ir(struct em28xx *dev, struct IR_i2c *ir)
+void em28xx_register_i2c_ir(struct em28xx *dev)
 {
-        if (disable_ir) {
-                ir->get_key = NULL;
-                return ;
-        }
+        struct i2c_board_info info;
+        const unsigned short addr_list[] = {
+                 0x30, 0x47, I2C_CLIENT_END
+        };
+
+        if (disable_ir)
+                return;
 
+        memset(&info, 0, sizeof(struct i2c_board_info));
+        strlcpy(info.type, "ir_video", I2C_NAME_SIZE);
+        i2c_new_probed_device(&dev->i2c_adap, &info, addr_list);
+}
+
+void em28xx_set_ir(struct em28xx *dev, struct IR_i2c *ir)
+{
         /* detect & configure */
         switch (dev->model) {
         case (EM2800_BOARD_UNKNOWN):
diff --git a/drivers/media/video/em28xx/em28xx-i2c.c b/drivers/media/video/em28xx/em28xx-i2c.c
index f0bf1d960c75..d90294cbb70d 100644
--- a/drivers/media/video/em28xx/em28xx-i2c.c
+++ b/drivers/media/video/em28xx/em28xx-i2c.c
@@ -575,6 +575,9 @@ int em28xx_i2c_register(struct em28xx *dev)
         if (i2c_scan)
                 em28xx_do_i2c_scan(dev);
 
+        /* Instantiate the IR receiver device, if present */
+        em28xx_register_i2c_ir(dev);
+
         return 0;
 }
 
diff --git a/drivers/media/video/em28xx/em28xx-input.c b/drivers/media/video/em28xx/em28xx-input.c
index 7450ba7dee83..7a0fe3816e3d 100644
--- a/drivers/media/video/em28xx/em28xx-input.c
+++ b/drivers/media/video/em28xx/em28xx-input.c
@@ -85,7 +85,7 @@ int em28xx_get_key_terratec(struct IR_i2c *ir, u32 *ir_key, u32 *ir_raw)
         unsigned char b;
 
         /* poll IR chip */
-        if (1 != i2c_master_recv(&ir->c, &b, 1)) {
+        if (1 != i2c_master_recv(ir->c, &b, 1)) {
                 i2cdprintk("read error\n");
                 return -EIO;
         }
@@ -114,7 +114,7 @@ int em28xx_get_key_em_haup(struct IR_i2c *ir, u32 *ir_key, u32 *ir_raw)
         unsigned char code;
 
         /* poll IR chip */
-        if (2 != i2c_master_recv(&ir->c, buf, 2))
+        if (2 != i2c_master_recv(ir->c, buf, 2))
                 return -EIO;
 
         /* Does eliminate repeated parity code */
@@ -147,7 +147,7 @@ int em28xx_get_key_pinnacle_usb_grey(struct IR_i2c *ir, u32 *ir_key,
 
         /* poll IR chip */
 
-        if (3 != i2c_master_recv(&ir->c, buf, 3)) {
+        if (3 != i2c_master_recv(ir->c, buf, 3)) {
                 i2cdprintk("read error\n");
                 return -EIO;
         }
diff --git a/drivers/media/video/em28xx/em28xx.h b/drivers/media/video/em28xx/em28xx.h
index 58c0ef4a2dce..9c632541df10 100644
--- a/drivers/media/video/em28xx/em28xx.h
+++ b/drivers/media/video/em28xx/em28xx.h
@@ -643,6 +643,7 @@ extern void em28xx_card_setup(struct em28xx *dev);
 extern struct em28xx_board em28xx_boards[];
 extern struct usb_device_id em28xx_id_table[];
 extern const unsigned int em28xx_bcount;
+void em28xx_register_i2c_ir(struct em28xx *dev);
 void em28xx_set_ir(struct em28xx *dev, struct IR_i2c *ir);
 int em28xx_tuner_callback(void *ptr, int component, int command, int arg);
 void em28xx_release_resources(struct em28xx *dev);