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[2/5] add control definitions

Message ID 1517950905-5015-3-git-send-email-floe@butterbrot.org (mailing list archive)
State New, archived
Headers show

Commit Message

Florian Echtler Feb. 6, 2018, 9:01 p.m. UTC 
This patch adds parameter definitions for the four userspace controls that
the SUR40 can currently provide.

Signed-off-by: Florian Echtler <floe@butterbrot.org>
---
 drivers/input/touchscreen/sur40.c | 17 +++++++++++++++++
 1 file changed, 17 insertions(+)
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Patch

diff --git a/drivers/input/touchscreen/sur40.c b/drivers/input/touchscreen/sur40.c
index 8375b06..3af63415 100644
--- a/drivers/input/touchscreen/sur40.c
+++ b/drivers/input/touchscreen/sur40.c
@@ -149,6 +149,23 @@  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
+
 static const struct v4l2_pix_format sur40_pix_format[] = {
 	{
 		.pixelformat = V4L2_TCH_FMT_TU08,