diff options
| -rw-r--r-- | linux/drivers/media/video/wm8739.c | 71 |
1 files changed, 41 insertions, 30 deletions
diff --git a/linux/drivers/media/video/wm8739.c b/linux/drivers/media/video/wm8739.c index 4b5956a8f..a0a4ed3ba 100644 --- a/linux/drivers/media/video/wm8739.c +++ b/linux/drivers/media/video/wm8739.c @@ -31,7 +31,7 @@ #include <media/v4l2-common.h> #include <media/v4l2-chip-ident.h> #include <media/v4l2-i2c-drv-legacy.h> -#if LINUX_VERSION_CODE < KERNEL_VERSION(2,5,0) +#if LINUX_VERSION_CODE < KERNEL_VERSION(2, 5, 0) #include "i2c-compat.h" #include <linux/slab.h> #endif @@ -41,7 +41,7 @@ MODULE_DESCRIPTION("wm8739 driver"); MODULE_AUTHOR("T. Adachi, Hans Verkuil"); MODULE_LICENSE("GPL"); -static int debug = 0; +static int debug; static unsigned short normal_i2c[] = { 0x34 >> 1, 0x36 >> 1, I2C_CLIENT_END }; #if LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 0) @@ -52,7 +52,7 @@ MODULE_PARM(debug, "i"); MODULE_PARM_DESC(debug, "Debug level (0-1)"); -#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,13) +#if LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 13) static unsigned short normal_i2c_range[] = { I2C_CLIENT_END }; #endif @@ -88,12 +88,10 @@ static int wm8739_write(struct i2c_client *client, int reg, u16 val) v4l_dbg(1, debug, client, "write: %02x %02x\n", reg, val); - for (i = 0; i < 3; i++) { - if (i2c_smbus_write_byte_data(client, (reg << 1) | - (val >> 8), val & 0xff) == 0) { + for (i = 0; i < 3; i++) + if (i2c_smbus_write_byte_data(client, + (reg << 1) | (val >> 8), val & 0xff) == 0) return 0; - } - } v4l_err(client, "I2C: cannot write %03x to register R%d\n", val, reg); return -1; } @@ -180,7 +178,7 @@ static struct v4l2_queryctrl wm8739_qctrl[] = { .default_value = 58880, .flags = 0, .type = V4L2_CTRL_TYPE_INTEGER, - },{ + }, { .id = V4L2_CID_AUDIO_MUTE, .name = "Mute", .minimum = 0, @@ -189,7 +187,7 @@ static struct v4l2_queryctrl wm8739_qctrl[] = { .default_value = 1, .flags = 0, .type = V4L2_CTRL_TYPE_BOOLEAN, - },{ + }, { .id = V4L2_CID_AUDIO_BALANCE, .name = "Balance", .minimum = 0, @@ -203,7 +201,7 @@ static struct v4l2_queryctrl wm8739_qctrl[] = { /* ------------------------------------------------------------------------ */ -static int wm8739_command(struct i2c_client *client, unsigned int cmd, void *arg) +static int wm8739_command(struct i2c_client *client, unsigned cmd, void *arg) { struct wm8739_state *state = i2c_get_clientdata(client); @@ -213,21 +211,26 @@ static int wm8739_command(struct i2c_client *client, unsigned int cmd, void *arg u32 audiofreq = *(u32 *)arg; state->clock_freq = audiofreq; - wm8739_write(client, R9, 0x000); /* de-activate */ + /* de-activate */ + wm8739_write(client, R9, 0x000); switch (audiofreq) { case 44100: - wm8739_write(client, R8, 0x020); /* 256fps, fs=44.1k */ + /* 256fps, fs=44.1k */ + wm8739_write(client, R8, 0x020); break; case 48000: - wm8739_write(client, R8, 0x000); /* 256fps, fs=48k */ + /* 256fps, fs=48k */ + wm8739_write(client, R8, 0x000); break; case 32000: - wm8739_write(client, R8, 0x018); /* 256fps, fs=32k */ + /* 256fps, fs=32k */ + wm8739_write(client, R8, 0x018); break; default: break; } - wm8739_write(client, R9, 0x001); /* activate */ + /* activate */ + wm8739_write(client, R9, 0x001); break; } @@ -251,7 +254,8 @@ static int wm8739_command(struct i2c_client *client, unsigned int cmd, void *arg } case VIDIOC_G_CHIP_IDENT: - return v4l2_chip_ident_i2c_client(client, arg, V4L2_IDENT_WM8739, 0); + return v4l2_chip_ident_i2c_client(client, + arg, V4L2_IDENT_WM8739, 0); case VIDIOC_LOG_STATUS: v4l_info(client, "Frequency: %u Hz\n", state->clock_freq); @@ -280,7 +284,8 @@ static int wm8739_probe(struct i2c_client *client) if (!i2c_check_functionality(client->adapter, I2C_FUNC_SMBUS_BYTE_DATA)) return -EIO; - v4l_info(client, "chip found @ 0x%x (%s)\n", client->addr << 1, client->adapter->name); + v4l_info(client, "chip found @ 0x%x (%s)\n", + client->addr << 1, client->adapter->name); state = kmalloc(sizeof(struct wm8739_state), GFP_KERNEL); if (state == NULL) { @@ -296,17 +301,23 @@ static int wm8739_probe(struct i2c_client *client) state->clock_freq = 48000; i2c_set_clientdata(client, state); - /* initialize wm8739 */ - wm8739_write(client, R15, 0x00); /* reset */ - wm8739_write(client, R5, 0x000); /* filter setting, high path, offet clear */ - wm8739_write(client, R6, 0x000); /* ADC, OSC, Power Off mode Disable */ - wm8739_write(client, R7, 0x049); /* Digital Audio interface format */ - /* Enable Master mode */ - /* 24 bit, MSB first/left justified */ - wm8739_write(client, R8, 0x000); /* sampling control */ - /* normal, 256fs, 48KHz sampling rate */ - wm8739_write(client, R9, 0x001); /* activate */ - wm8739_set_audio(client); /* set volume/mute */ + /* Initialize wm8739 */ + + /* reset */ + wm8739_write(client, R15, 0x00); + /* filter setting, high path, offet clear */ + wm8739_write(client, R5, 0x000); + /* ADC, OSC, Power Off mode Disable */ + wm8739_write(client, R6, 0x000); + /* Digital Audio interface format: + Enable Master mode, 24 bit, MSB first/left justified */ + wm8739_write(client, R7, 0x049); + /* sampling control: normal, 256fs, 48KHz sampling rate */ + wm8739_write(client, R8, 0x000); + /* activate */ + wm8739_write(client, R9, 0x001); + /* set volume/mute */ + wm8739_set_audio(client); return 0; } @@ -327,6 +338,6 @@ static struct v4l2_i2c_driver_data v4l2_i2c_data = { #endif }; -#if LINUX_VERSION_CODE < KERNEL_VERSION(2,5,0) +#if LINUX_VERSION_CODE < KERNEL_VERSION(2, 5, 0) EXPORT_NO_SYMBOLS; #endif |