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V4L/DVB (6453): wm8739: convert to bus-based I2C API 

Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
This commit is contained in:
Hans Verkuil 2007-09-13 11:10:07 -03:00 committed by Mauro Carvalho Chehab
parent d9a53aa902
commit 49457cc279
1 changed files with 10 additions and 61 deletions
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69
drivers/media/video/wm8739.c
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@ -30,6 +30,7 @@
#include <linux/videodev.h> #include <linux/videodev.h>
#include <media/v4l2-common.h> #include <media/v4l2-common.h>
#include <media/v4l2-chip-ident.h> #include <media/v4l2-chip-ident.h>
#include <media/v4l2-i2c-drv-legacy.h>
MODULE_DESCRIPTION("wm8739 driver"); MODULE_DESCRIPTION("wm8739 driver");
MODULE_AUTHOR("T. Adachi, Hans Verkuil"); MODULE_AUTHOR("T. Adachi, Hans Verkuil");
@ -259,27 +260,11 @@ static int wm8739_command(struct i2c_client *client, unsigned int cmd, void *arg
/* i2c implementation */ /* i2c implementation */
static struct i2c_driver i2c_driver; static int wm8739_probe(struct i2c_client *client)
static int wm8739_attach(struct i2c_adapter *adapter, int address, int kind)
{ {
struct i2c_client *client;
struct wm8739_state *state; struct wm8739_state *state;
/* Check if the adapter supports the needed features */ v4l_info(client, "chip found @ 0x%x (%s)\n", client->addr << 1, client->adapter->name);
if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA))
return 0;
client = kzalloc(sizeof(struct i2c_client), GFP_KERNEL);
if (client == NULL)
return -ENOMEM;
client->addr = address;
client->adapter = adapter;
client->driver = &i2c_driver;
snprintf(client->name, sizeof(client->name) - 1, "wm8739");
v4l_info(client, "chip found @ 0x%x (%s)\n", address << 1, adapter->name);
state = kmalloc(sizeof(struct wm8739_state), GFP_KERNEL); state = kmalloc(sizeof(struct wm8739_state), GFP_KERNEL);
if (state == NULL) { if (state == NULL) {
@ -306,56 +291,20 @@ static int wm8739_attach(struct i2c_adapter *adapter, int address, int kind)
/* normal, 256fs, 48KHz sampling rate */ /* normal, 256fs, 48KHz sampling rate */
wm8739_write(client, R9, 0x001); /* activate */ wm8739_write(client, R9, 0x001); /* activate */
wm8739_set_audio(client); /* set volume/mute */ wm8739_set_audio(client); /* set volume/mute */
i2c_attach_client(client);
return 0; return 0;
} }
static int wm8739_probe(struct i2c_adapter *adapter) static int wm8739_remove(struct i2c_client *client)
{ {
if (adapter->class & I2C_CLASS_TV_ANALOG) kfree(i2c_get_clientdata(client));
return i2c_probe(adapter, &addr_data, wm8739_attach);
return 0; return 0;
} }
static int wm8739_detach(struct i2c_client *client) static struct v4l2_i2c_driver_data v4l2_i2c_data = {
{
struct wm8739_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 = "wm8739", .name = "wm8739",
}, .driverid = I2C_DRIVERID_WM8739,
.id = I2C_DRIVERID_WM8739,
.attach_adapter = wm8739_probe,
.detach_client = wm8739_detach,
.command = wm8739_command, .command = wm8739_command,
.probe = wm8739_probe,
.remove = wm8739_remove,
}; };
static int __init wm8739_init_module(void)
{
return i2c_add_driver(&i2c_driver);
}
static void __exit wm8739_cleanup_module(void)
{
i2c_del_driver(&i2c_driver);
}
module_init(wm8739_init_module);
module_exit(wm8739_cleanup_module);