[PATCH 2/4] add default settings and module parameters for video controls
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STALE3172d
From: Florian Echtler <hidden>
Date: 2018-02-08 08:44:28
Also in:
linux-media
Subsystem:
input (keyboard, mouse, joystick, touchscreen) drivers, the rest · Maintainers:
Dmitry Torokhov, Linus Torvalds
This patch adds parameter definitions and module parameters for the four userspace controls that the SUR40 can currently provide. Signed-off-by: Florian Echtler <redacted> --- drivers/input/touchscreen/sur40.c | 28 ++++++++++++++++++++++++++++ 1 file changed, 28 insertions(+)
diff --git a/drivers/input/touchscreen/sur40.c b/drivers/input/touchscreen/sur40.c
index 8375b06..8a5b031 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,
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2.7.4