diff options
Diffstat (limited to 'drivers/input/touchscreen/sur40.c')
| -rw-r--r-- | drivers/input/touchscreen/sur40.c | 34 |
1 files changed, 34 insertions, 0 deletions
diff --git a/drivers/input/touchscreen/sur40.c b/drivers/input/touchscreen/sur40.c index 8375b06ba837..45ad5746aad8 100644 --- a/drivers/input/touchscreen/sur40.c +++ b/drivers/input/touchscreen/sur40.c @@ -149,6 +149,40 @@ struct sur40_image_header { #define SUR40_TOUCH 0x02 #define SUR40_TAG 0x04 +/* video controls */ +#define SUR40_BRIGHTNESS_MAX 0xff +#define SUR40_BRIGHTNESS_MIN 0x00 +#define SUR40_BRIGHTNESS_DEF 0xff + +#define SUR40_CONTRAST_MAX 0x0f +#define SUR40_CONTRAST_MIN 0x00 +#define SUR40_CONTRAST_DEF 0x0a + +#define SUR40_GAIN_MAX 0x09 +#define SUR40_GAIN_MIN 0x00 +#define SUR40_GAIN_DEF 0x08 + +#define SUR40_BACKLIGHT_MAX 0x01 +#define SUR40_BACKLIGHT_MIN 0x00 +#define SUR40_BACKLIGHT_DEF 0x01 + +#define sur40_str(s) #s +#define SUR40_PARAM_RANGE(lo, hi) " (range " sur40_str(lo) "-" sur40_str(hi) ")" + +/* module parameters */ +static uint brightness = SUR40_BRIGHTNESS_DEF; +module_param(brightness, uint, 0644); +MODULE_PARM_DESC(brightness, "set initial brightness" + SUR40_PARAM_RANGE(SUR40_BRIGHTNESS_MIN, SUR40_BRIGHTNESS_MAX)); +static uint contrast = SUR40_CONTRAST_DEF; +module_param(contrast, uint, 0644); +MODULE_PARM_DESC(contrast, "set initial contrast" + SUR40_PARAM_RANGE(SUR40_CONTRAST_MIN, SUR40_CONTRAST_MAX)); +static uint gain = SUR40_GAIN_DEF; +module_param(gain, uint, 0644); +MODULE_PARM_DESC(gain, "set initial gain" + SUR40_PARAM_RANGE(SUR40_GAIN_MIN, SUR40_GAIN_MAX)); + static const struct v4l2_pix_format sur40_pix_format[] = { { .pixelformat = V4L2_TCH_FMT_TU08, |