diff options
| author | Andy Walls <awalls@radix.net> | 2009-11-21 01:47:45 -0300 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab@redhat.com> | 2009-12-05 18:41:55 -0200 |
| commit | f412d36a8c9f8e40e057b71e80d534ac388e903e (patch) | |
| tree | 36f5a0005efce82787a3dc99af8417dee79f0055 /drivers/media/video/ivtv/ivtv-driver.h | |
| parent | e45e8f5cee75b0559ce1ca7007b4963b91910fa8 (diff) | |
V4L/DVB (13442): ivtv: Add module parameter to adjust I2C SCL clock period per board
Add a module parameter to adjust I2C SCL clock period per board. This allows
some experimental fine tuning by end users to overcome quirky I2C device
problems.
Reported-by: "Aleksandr V. Piskunov" <aleksandr.v.piskunov@gmail.com>
Signed-off-by: Andy Walls <awalls@radix.net>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Diffstat (limited to 'drivers/media/video/ivtv/ivtv-driver.h')
| -rw-r--r-- | drivers/media/video/ivtv/ivtv-driver.h | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/media/video/ivtv/ivtv-driver.h b/drivers/media/video/ivtv/ivtv-driver.h index 440f7328a7e..2b3db90afb7 100644 --- a/drivers/media/video/ivtv/ivtv-driver.h +++ b/drivers/media/video/ivtv/ivtv-driver.h @@ -176,12 +176,16 @@ extern int ivtv_debug; #define IVTV_MAX_PGM_INDEX (400) +/* Default I2C SCL period in microseconds */ +#define IVTV_DEFAULT_I2C_CLOCK_PERIOD 20 + struct ivtv_options { int kilobytes[IVTV_MAX_STREAMS]; /* size in kilobytes of each stream */ int cardtype; /* force card type on load */ int tuner; /* set tuner on load */ int radio; /* enable/disable radio */ int newi2c; /* new I2C algorithm */ + int i2c_clock_period; /* period of SCL for I2C bus */ }; /* ivtv-specific mailbox template */ |