V4L/DVB (6452): wm8775: convert to bus-based I2C API
Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
diff --git a/drivers/media/video/wm8775.c b/drivers/media/video/wm8775.c
index 9f7e894..c31a0c3 100644
--- a/drivers/media/video/wm8775.c
+++ b/drivers/media/video/wm8775.c
@@ -34,6 +34,7 @@
#include <linux/videodev.h>
#include <media/v4l2-common.h>
#include <media/v4l2-chip-ident.h>
+#include <media/v4l2-i2c-drv-legacy.h>
MODULE_DESCRIPTION("wm8775 driver");
MODULE_AUTHOR("Ulf Eklund, Hans Verkuil");
@@ -44,6 +45,7 @@
I2C_CLIENT_INSMOD;
+
/* ----------------------------------------------------------------------- */
enum {
@@ -76,8 +78,7 @@
return -1;
}
-static int wm8775_command(struct i2c_client *client, unsigned int cmd,
- void *arg)
+static int wm8775_command(struct i2c_client *client, unsigned int cmd, void *arg)
{
struct wm8775_state *state = i2c_get_clientdata(client);
struct v4l2_routing *route = arg;
@@ -159,31 +160,18 @@
* concerning the addresses: i2c wants 7 bit (without the r/w bit), so '>>1'
*/
-static struct i2c_driver i2c_driver;
-
-static int wm8775_attach(struct i2c_adapter *adapter, int address, int kind)
+static int wm8775_probe(struct i2c_client *client)
{
- struct i2c_client *client;
struct wm8775_state *state;
/* Check if the adapter supports the needed features */
- if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA))
- return 0;
+ if (!i2c_check_functionality(client->adapter, I2C_FUNC_SMBUS_BYTE_DATA))
+ return -EIO;
- client = kzalloc(sizeof(struct i2c_client), GFP_KERNEL);
- if (client == 0)
- return -ENOMEM;
-
- client->addr = address;
- client->adapter = adapter;
- client->driver = &i2c_driver;
- snprintf(client->name, sizeof(client->name) - 1, "wm8775");
-
- v4l_info(client, "chip found @ 0x%x (%s)\n", address << 1, adapter->name);
+ v4l_info(client, "chip found @ 0x%x (%s)\n", client->addr << 1, client->adapter->name);
state = kmalloc(sizeof(struct wm8775_state), GFP_KERNEL);
if (state == NULL) {
- kfree(client);
return -ENOMEM;
}
state->input = 2;
@@ -208,56 +196,20 @@
wm8775_write(client, R20, 0x07a); /* Transient window 4ms, lower PGA gain */
/* limit -1dB */
wm8775_write(client, R21, 0x102); /* LRBOTH = 1, use input 2. */
- i2c_attach_client(client);
-
return 0;
}
-static int wm8775_probe(struct i2c_adapter *adapter)
+static int wm8775_remove(struct i2c_client *client)
{
- if (adapter->class & I2C_CLASS_TV_ANALOG)
- return i2c_probe(adapter, &addr_data, wm8775_attach);
+ kfree(i2c_get_clientdata(client));
return 0;
}
-static int wm8775_detach(struct i2c_client *client)
-{
- struct wm8775_state *state = i2c_get_clientdata(client);
- int err;
-
- err = i2c_detach_client(client);
- if (err) {
- return err;
- }
- kfree(state);
- kfree(client);
-
- return 0;
-}
-
-/* ----------------------------------------------------------------------- */
-
-/* i2c implementation */
-static struct i2c_driver i2c_driver = {
- .driver = {
- .name = "wm8775",
- },
- .id = I2C_DRIVERID_WM8775,
- .attach_adapter = wm8775_probe,
- .detach_client = wm8775_detach,
- .command = wm8775_command,
+static struct v4l2_i2c_driver_data v4l2_i2c_data = {
+ .name = "wm8775",
+ .driverid = I2C_DRIVERID_WM8775,
+ .command = wm8775_command,
+ .probe = wm8775_probe,
+ .remove = wm8775_remove,
};
-
-static int __init wm8775_init_module(void)
-{
- return i2c_add_driver(&i2c_driver);
-}
-
-static void __exit wm8775_cleanup_module(void)
-{
- i2c_del_driver(&i2c_driver);
-}
-
-module_init(wm8775_init_module);
-module_exit(wm8775_cleanup_module);