diff options
| author | Devin Heitmueller <dheitmueller@linuxtv.org> | 2009-03-31 23:58:49 -0300 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab@redhat.com> | 2009-04-06 21:43:56 -0300 |
| commit | 9beb0de9adc789a7da22dac811b03ff342b27b63 (patch) | |
| tree | 46fbf35b91e86edd917e1e318e05c85433c70bb0 /drivers/media/video/au0828/au0828-reg.h | |
| parent | 3956fefc593c45a480466c76fdbfee5063d766bf (diff) | |
V4L/DVB (11342): au0828: better document i2c registers
Change the #define entries for the i2c registers to be more meaningful, and
document the valid values for the registers. Note that this changeset makes
*no* functional changes to the code.
Signed-off-by: Devin Heitmueller <dheitmueller@linuxtv.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Diffstat (limited to 'drivers/media/video/au0828/au0828-reg.h')
| -rw-r--r-- | drivers/media/video/au0828/au0828-reg.h | 35 |
1 files changed, 28 insertions, 7 deletions
diff --git a/drivers/media/video/au0828/au0828-reg.h b/drivers/media/video/au0828/au0828-reg.h index b15e4a3b6fc..c39f3d2b721 100644 --- a/drivers/media/video/au0828/au0828-reg.h +++ b/drivers/media/video/au0828/au0828-reg.h @@ -30,15 +30,36 @@ #define AU0828_SENSORCTRL_100 0x100 #define AU0828_SENSORCTRL_VBI_103 0x103 -#define REG_200 0x200 -#define REG_201 0x201 -#define REG_202 0x202 -#define REG_203 0x203 -#define REG_205 0x205 -#define REG_209 0x209 -#define REG_2FF 0x2ff +/* I2C registers */ +#define AU0828_I2C_TRIGGER_200 0x200 +#define AU0828_I2C_STATUS_201 0x201 +#define AU0828_I2C_CLK_DIVIDER_202 0x202 +#define AU0828_I2C_DEST_ADDR_203 0x203 +#define AU0828_I2C_WRITE_FIFO_205 0x205 +#define AU0828_I2C_READ_FIFO_209 0x209 +#define AU0828_I2C_MULTIBYTE_MODE_2FF 0x2ff /* Audio registers */ #define AU0828_AUDIOCTRL_50C 0x50C #define REG_600 0x600 + +/*********************************************************************/ +/* Here are constants for values associated with the above registers */ + +/* I2C Trigger (Reg 0x200) */ +#define AU0828_I2C_TRIGGER_WRITE 0x01 +#define AU0828_I2C_TRIGGER_READ 0x20 +#define AU0828_I2C_TRIGGER_HOLD 0x40 + +/* I2C Status (Reg 0x201) */ +#define AU0828_I2C_STATUS_READ_DONE 0x01 +#define AU0828_I2C_STATUS_NO_READ_ACK 0x02 +#define AU0828_I2C_STATUS_WRITE_DONE 0x04 +#define AU0828_I2C_STATUS_NO_WRITE_ACK 0x08 +#define AU0828_I2C_STATUS_BUSY 0x10 + +/* I2C Clock Divider (Reg 0x202) */ +#define AU0828_I2C_CLK_250KHZ 0x07 +#define AU0828_I2C_CLK_100KHZ 0x14 +#define AU0828_I2C_CLK_30KHZ 0x40 |