diff options
Diffstat (limited to 'drivers/media')
| -rw-r--r-- | drivers/media/video/tlv320aic23b.c | 63 |
1 files changed, 34 insertions, 29 deletions
diff --git a/drivers/media/video/tlv320aic23b.c b/drivers/media/video/tlv320aic23b.c index e906528348a..dc7b9c220b9 100644 --- a/drivers/media/video/tlv320aic23b.c +++ b/drivers/media/video/tlv320aic23b.c @@ -57,37 +57,35 @@ static int tlv320aic23b_write(struct i2c_client *client, int reg, u16 val) return -1; } - 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; } -static int tlv320aic23b_command(struct i2c_client *client, unsigned int cmd, - void *arg) +static int tlv320aic23b_command(struct i2c_client *client, + unsigned int cmd, void *arg) { struct tlv320aic23b_state *state = i2c_get_clientdata(client); struct v4l2_control *ctrl = arg; - u32* freq = arg; + u32 *freq = arg; switch (cmd) { case VIDIOC_INT_AUDIO_CLOCK_FREQ: switch (*freq) { - case 32000: /* set sample rate to 32 kHz */ - tlv320aic23b_write(client, 8, 0x018); - break; - case 44100: /* set sample rate to 44.1 kHz */ - tlv320aic23b_write(client, 8, 0x022); - break; - case 48000: /* set sample rate to 48 kHz */ - tlv320aic23b_write(client, 8, 0x000); - break; - default: - return -EINVAL; + case 32000: /* set sample rate to 32 kHz */ + tlv320aic23b_write(client, 8, 0x018); + break; + case 44100: /* set sample rate to 44.1 kHz */ + tlv320aic23b_write(client, 8, 0x022); + break; + case 48000: /* set sample rate to 48 kHz */ + tlv320aic23b_write(client, 8, 0x000); + break; + default: + return -EINVAL; } break; @@ -135,22 +133,29 @@ static int tlv320aic23b_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 tlv320aic23b_state), GFP_KERNEL); - if (state == NULL) { + if (state == NULL) return -ENOMEM; - } state->muted = 0; i2c_set_clientdata(client, state); - /* initialize tlv320aic23b */ - tlv320aic23b_write(client, 15, 0x000); /* RESET */ - tlv320aic23b_write(client, 6, 0x00A); /* turn off DAC & mic input */ - tlv320aic23b_write(client, 7, 0x049); /* left-justified, 24-bit, master mode */ - tlv320aic23b_write(client, 0, 0x119); /* set gain on both channels to +3.0 dB */ - tlv320aic23b_write(client, 8, 0x000); /* set sample rate to 48 kHz */ - tlv320aic23b_write(client, 9, 0x001); /* activate digital interface */ + /* Initialize tlv320aic23b */ + + /* RESET */ + tlv320aic23b_write(client, 15, 0x000); + /* turn off DAC & mic input */ + tlv320aic23b_write(client, 6, 0x00A); + /* left-justified, 24-bit, master mode */ + tlv320aic23b_write(client, 7, 0x049); + /* set gain on both channels to +3.0 dB */ + tlv320aic23b_write(client, 0, 0x119); + /* set sample rate to 48 kHz */ + tlv320aic23b_write(client, 8, 0x000); + /* activate digital interface */ + tlv320aic23b_write(client, 9, 0x001); return 0; } |