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Diffstat (limited to 'target/linux/brcm2708/patches-4.1/0162-rpisense-fb-add-low-light-mode-and-gamma-control.patch')
-rw-r--r--target/linux/brcm2708/patches-4.1/0162-rpisense-fb-add-low-light-mode-and-gamma-control.patch141
1 files changed, 141 insertions, 0 deletions
diff --git a/target/linux/brcm2708/patches-4.1/0162-rpisense-fb-add-low-light-mode-and-gamma-control.patch b/target/linux/brcm2708/patches-4.1/0162-rpisense-fb-add-low-light-mode-and-gamma-control.patch
new file mode 100644
index 0000000000..3ebe3065cc
--- /dev/null
+++ b/target/linux/brcm2708/patches-4.1/0162-rpisense-fb-add-low-light-mode-and-gamma-control.patch
@@ -0,0 +1,141 @@
+From a0d9e5b5186d36693a44d5fd85c1fcd43cfeee61 Mon Sep 17 00:00:00 2001
+From: Serge Schneider <serge@raspberrypi.org>
+Date: Mon, 17 Aug 2015 18:06:16 +0100
+Subject: [PATCH 162/171] rpisense-fb: add low-light mode and gamma control
+
+---
+ drivers/video/fbdev/rpisense-fb.c | 68 +++++++++++++++++++++++++++++---
+ include/linux/mfd/rpisense/framebuffer.h | 6 ++-
+ 2 files changed, 68 insertions(+), 6 deletions(-)
+
+--- a/drivers/video/fbdev/rpisense-fb.c
++++ b/drivers/video/fbdev/rpisense-fb.c
+@@ -19,6 +19,7 @@
+ #include <linux/string.h>
+ #include <linux/mm.h>
+ #include <linux/slab.h>
++#include <linux/uaccess.h>
+ #include <linux/delay.h>
+ #include <linux/fb.h>
+ #include <linux/init.h>
+@@ -26,22 +27,35 @@
+ #include <linux/mfd/rpisense/framebuffer.h>
+ #include <linux/mfd/rpisense/core.h>
+
++static bool lowlight;
++module_param(lowlight, bool, 0);
++MODULE_PARM_DESC(lowlight, "Reduce LED matrix brightness to one third");
++
+ struct rpisense *rpisense;
+
+ struct rpisense_fb_param {
+ char __iomem *vmem;
+ u8 *vmem_work;
+ u32 vmemsize;
+- u8 gamma[32];
++ u8 *gamma;
+ };
+
++static u8 gamma_default[32] = {0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x01,
++ 0x02, 0x02, 0x03, 0x03, 0x04, 0x05, 0x06, 0x07,
++ 0x08, 0x09, 0x0A, 0x0B, 0x0C, 0x0E, 0x0F, 0x11,
++ 0x12, 0x14, 0x15, 0x17, 0x19, 0x1B, 0x1D, 0x1F,};
++
++static u8 gamma_low[32] = {0x00, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01,
++ 0x01, 0x01, 0x01, 0x01, 0x01, 0x02, 0x02, 0x02,
++ 0x03, 0x03, 0x03, 0x04, 0x04, 0x05, 0x05, 0x06,
++ 0x06, 0x07, 0x07, 0x08, 0x08, 0x09, 0x0A, 0x0A,};
++
++static u8 gamma_user[32];
++
+ static struct rpisense_fb_param rpisense_fb_param = {
+ .vmem = NULL,
+ .vmemsize = 128,
+- .gamma = {0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x01,
+- 0x02, 0x02, 0x03, 0x03, 0x04, 0x05, 0x06, 0x07,
+- 0x08, 0x09, 0x0A, 0x0B, 0x0C, 0x0E, 0x0F, 0x11,
+- 0x12, 0x14, 0x15, 0x17, 0x19, 0x1B, 0x1D, 0x1F,},
++ .gamma = gamma_default,
+ };
+
+ static struct fb_deferred_io rpisense_fb_defio;
+@@ -127,6 +141,46 @@ static struct fb_deferred_io rpisense_fb
+ .deferred_io = rpisense_fb_deferred_io,
+ };
+
++static int rpisense_fb_ioctl(struct fb_info *info, unsigned int cmd,
++ unsigned long arg)
++{
++ switch (cmd) {
++ case SENSEFB_FBIOGET_GAMMA:
++ if (copy_to_user((void __user *) arg, rpisense_fb_param.gamma,
++ sizeof(u8[32])))
++ return -EFAULT;
++ return 0;
++ case SENSEFB_FBIOSET_GAMMA:
++ if (copy_from_user(gamma_user, (void __user *)arg,
++ sizeof(u8[32])))
++ return -EFAULT;
++ rpisense_fb_param.gamma = gamma_user;
++ schedule_delayed_work(&info->deferred_work,
++ rpisense_fb_defio.delay);
++ return 0;
++ case SENSEFB_FBIORESET_GAMMA:
++ switch (arg) {
++ case 0:
++ rpisense_fb_param.gamma = gamma_default;
++ break;
++ case 1:
++ rpisense_fb_param.gamma = gamma_low;
++ break;
++ case 2:
++ rpisense_fb_param.gamma = gamma_user;
++ break;
++ default:
++ return -EINVAL;
++ }
++ schedule_delayed_work(&info->deferred_work,
++ rpisense_fb_defio.delay);
++ break;
++ default:
++ return -EINVAL;
++ }
++ return 0;
++}
++
+ static struct fb_ops rpisense_fb_ops = {
+ .owner = THIS_MODULE,
+ .fb_read = fb_sys_read,
+@@ -134,6 +188,7 @@ static struct fb_ops rpisense_fb_ops = {
+ .fb_fillrect = rpisense_fb_fillrect,
+ .fb_copyarea = rpisense_fb_copyarea,
+ .fb_imageblit = rpisense_fb_imageblit,
++ .fb_ioctl = rpisense_fb_ioctl,
+ };
+
+ static int rpisense_fb_probe(struct platform_device *pdev)
+@@ -171,6 +226,9 @@ static int rpisense_fb_probe(struct plat
+ info->screen_base = rpisense_fb_param.vmem;
+ info->screen_size = rpisense_fb_param.vmemsize;
+
++ if (lowlight)
++ rpisense_fb_param.gamma = gamma_low;
++
+ fb_deferred_io_init(info);
+
+ ret = register_framebuffer(info);
+--- a/include/linux/mfd/rpisense/framebuffer.h
++++ b/include/linux/mfd/rpisense/framebuffer.h
+@@ -16,7 +16,11 @@
+ #ifndef __LINUX_RPISENSE_FB_H_
+ #define __LINUX_RPISENSE_FB_H_
+
+-#include <linux/platform_device.h>
++#define SENSEFB_FBIO_IOC_MAGIC 0xF1
++
++#define SENSEFB_FBIOGET_GAMMA _IO(SENSEFB_FBIO_IOC_MAGIC, 0)
++#define SENSEFB_FBIOSET_GAMMA _IO(SENSEFB_FBIO_IOC_MAGIC, 1)
++#define SENSEFB_FBIORESET_GAMMA _IO(SENSEFB_FBIO_IOC_MAGIC, 2)
+
+ struct rpisense;
+