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Commit 4e6c5581 authored by Florian Echtler's avatar Florian Echtler Committed by Mauro Carvalho Chehab
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media: add default settings and module parameters for video controls 



This patch adds parameter definitions and module parameters for the four
userspace controls that the SUR40 can currently provide.

Signed-off-by: default avatarFlorian Echtler <floe@butterbrot.org>
Signed-off-by: default avatarHans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: default avatarMauro Carvalho Chehab <mchehab@s-opensource.com>
parent 0a90448e

drivers/input/touchscreen/sur40.c

+34 −0
Original line number Diff line number Diff line
@@ -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,