diff options
Diffstat (limited to 'target/linux/brcm2708/patches-4.1/0161-rpisense-fb-add-low-light-mode-and-gamma-control.patch')
| -rw-r--r-- | target/linux/brcm2708/patches-4.1/0161-rpisense-fb-add-low-light-mode-and-gamma-control.patch | 141 |
1 files changed, 141 insertions, 0 deletions
diff --git a/target/linux/brcm2708/patches-4.1/0161-rpisense-fb-add-low-light-mode-and-gamma-control.patch b/target/linux/brcm2708/patches-4.1/0161-rpisense-fb-add-low-light-mode-and-gamma-control.patch new file mode 100644 index 0000000000..16ef29c0e0 --- /dev/null +++ b/target/linux/brcm2708/patches-4.1/0161-rpisense-fb-add-low-light-mode-and-gamma-control.patch @@ -0,0 +1,141 @@ +From 15cf5667c9508d18808e0edf95acbff0313ef954 Mon Sep 17 00:00:00 2001 +From: Serge Schneider <serge@raspberrypi.org> +Date: Mon, 17 Aug 2015 18:06:16 +0100 +Subject: [PATCH 161/203] 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; + |