video: rockchip: fb: add car_reversing for px5

if userspace set car_reversing 1, rk fb will ignore
buffer from hwc.

Change-Id: Ib3bb9a105a8d6b7a2cc0e71c21bf8cc208b4ffd3
Signed-off-by: Huang Jiachai <hjc@rock-chips.com>

diff --git a/drivers/video/rockchip/rk_fb.c b/drivers/video/rockchip/rk_fb.c
index e047ea22304706ae4c5b14728fd4f117f5a7e58f..2ff4f79af12c42e734561cf1ac1ecfb0a81cc656 100644 (file)
--- a/drivers/video/rockchip/rk_fb.c
+++ b/drivers/video/rockchip/rk_fb.c
@@ -90,6 +90,12 @@ module_param(rk_fb_iommu_debug, int, S_IRUGO | S_IWUSR);
 static int rk_fb_config_debug(struct rk_lcdc_driver *dev_drv,
                              struct rk_fb_win_cfg_data *win_data,
                              struct rk_fb_reg_data *regs, u32 cmd);
+static int car_reversing;
+
+static int is_car_camcap(void) {
+       return car_reversing && strcmp("camcap", current->comm);
+}
+
 int support_uboot_display(void)
 {
        return uboot_logo_on;
@@ -1374,7 +1380,7 @@ static int rk_fb_pan_display(struct fb_var_screeninfo *var,
        u16 uv_x_off, uv_y_off, uv_y_act;
        u8 is_pic_yuv = 0;
 
-       if (dev_drv->suspend_flag)
+       if (dev_drv->suspend_flag || is_car_camcap())
                return 0;
        win_id = dev_drv->ops->fb_get_win_id(dev_drv, info->fix.id);
        if (win_id < 0)
@@ -2979,6 +2985,15 @@ static int rk_fb_ioctl(struct fb_info *info, unsigned int cmd,
                        if (cfgdone_index >= 10)
                                cfgdone_index = 0;
                }
+               if (is_car_camcap()) {
+                       int i = 0;
+
+                       for (i = 0; i < RK_MAX_BUF_NUM; i++)
+                               win_data.rel_fence_fd[i] = -1;
+
+                       win_data.ret_fence_fd = -1;
+                       goto cam_exit;
+               }
                if (copy_from_user(&win_data,
                                   (struct rk_fb_win_cfg_data __user *)argp,
                                   sizeof(win_data))) {
@@ -2989,6 +3004,7 @@ static int rk_fb_ioctl(struct fb_info *info, unsigned int cmd,
                dev_drv->wait_fs = win_data.wait_fs;
                ret = rk_fb_set_win_config(info, &win_data);
 
+cam_exit:
                if (copy_to_user((struct rk_fb_win_cfg_data __user *)arg,
                                 &win_data, sizeof(win_data))) {
                        ret = -EFAULT;
@@ -3018,6 +3034,8 @@ static int rk_fb_blank(int blank_mode, struct fb_info *info)
        struct rk_fb *rk_fb = dev_get_drvdata(info->device);
 #endif
 
+       if (is_car_camcap())
+               return 0;
        win_id = dev_drv->ops->fb_get_win_id(dev_drv, fix->id);
        if (win_id < 0)
                return -ENODEV;
@@ -3229,7 +3247,7 @@ static int rk_fb_set_par(struct fb_info *info)
        u16 uv_x_off, uv_y_off, uv_y_act;
        u8 is_pic_yuv = 0;
        /*var->pixclock = dev_drv->pixclock;*/
-       if (dev_drv->suspend_flag)
+       if (dev_drv->suspend_flag || is_car_camcap())
                return 0;
        win_id = dev_drv->ops->fb_get_win_id(dev_drv, info->fix.id);
        if (win_id < 0)
@@ -4511,6 +4529,29 @@ int rk_fb_unregister(struct rk_lcdc_driver *dev_drv)
        return 0;
 }
 
+int rk_fb_set_car_reverse_status(struct rk_lcdc_driver *dev_drv,
+                                int status)
+{
+       char *envp[3] = {"Request", "FORCE UPDATE", NULL};
+
+       if (status) {
+               car_reversing = 1;
+               flush_kthread_worker(&dev_drv->update_regs_worker);
+               dev_drv->timeline_max++;
+#ifdef H_USE_FENCE
+               sw_sync_timeline_inc(dev_drv->timeline, 1);
+#endif
+               pr_debug("%s: camcap reverse start...\n", __func__);
+       } else {
+               car_reversing = 0;
+               kobject_uevent_env(&dev_drv->dev->kobj,
+                                  KOBJ_CHANGE, envp);
+               pr_debug("%s: camcap reverse finish...\n", __func__);
+       }
+
+       return 0;
+}
+
 static int rk_fb_probe(struct platform_device *pdev)
 {
        struct rk_fb *rk_fb = NULL;

diff --git a/drivers/video/rockchip/rkfb_sysfs.c b/drivers/video/rockchip/rkfb_sysfs.c
index c375577888dd3c90d307a54c4bfb7dd94a10e410..e66f0ddfc1efd31d3b0081f5ac93c7248089b547 100644 (file)
--- a/drivers/video/rockchip/rkfb_sysfs.c
+++ b/drivers/video/rockchip/rkfb_sysfs.c
@@ -1211,6 +1211,24 @@ static ssize_t show_win_property(struct device *dev,
                        dev_drv->win[win_id]->property.max_input_y);
 }
 
+static ssize_t set_car_reverse(struct device *dev,
+                              struct device_attribute *attr,
+                              const char *buf, size_t count)
+{
+       struct fb_info *fbi = dev_get_drvdata(dev);
+       struct rk_fb_par *fb_par = (struct rk_fb_par *)fbi->par;
+       struct rk_lcdc_driver *dev_drv = fb_par->lcdc_drv;
+       u32 status;
+       int ret;
+
+       ret = kstrtou32(buf, 0, &status);
+       if (ret)
+               return ret;
+       rk_fb_set_car_reverse_status(dev_drv, status);
+
+       return count;
+}
+
 static struct device_attribute rkfb_attrs[] = {
        __ATTR(phys_addr, S_IRUGO, show_phys, NULL),
        __ATTR(virt_addr, S_IRUGO, show_virt, NULL),
@@ -1231,6 +1249,7 @@ static struct device_attribute rkfb_attrs[] = {
        __ATTR(scale, S_IRUGO | S_IWUSR, show_scale, set_scale),
        __ATTR(lcdcid, S_IRUGO, show_lcdc_id, NULL),
        __ATTR(win_property, S_IRUGO, show_win_property, NULL),
+       __ATTR(car_reverse, S_IWUSR, NULL, set_car_reverse),
 };
 
 int rkfb_create_sysfs(struct fb_info *fbi)

diff --git a/include/linux/rk_fb.h b/include/linux/rk_fb.h
index 302330efb29a045e022d962dbad5450a3ac50d05..2374664e6dfe4f4205308c551506a2a7f8a18c4d 100755 (executable)
--- a/include/linux/rk_fb.h
+++ b/include/linux/rk_fb.h
@@ -830,5 +830,6 @@ int rk_fb_get_display_policy(void);
 int rk_fb_pixel_width(int data_format);
 void trace_buffer_dump(struct device *dev,
                              struct rk_lcdc_driver *dev_drv);
+int rk_fb_set_car_reverse_status(struct rk_lcdc_driver *dev_drv, int status);
 extern int rockchip_get_screen_type(void);
 #endif