mirror of https://github.com/hak5/openwrt.git
142 lines
4.1 KiB
Diff
142 lines
4.1 KiB
Diff
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;
|
|
|