From: hjc <hjc@rock-chips.com>
Date: Mon, 13 Apr 2015 03:54:36 +0000 (+0800)
Subject: rk fb: send uevent when change video mode
X-Git-Tag: firefly_0821_release~4193
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=e6b41fe7093c0277bf59f7c3ddf13f83b4190254;p=firefly-linux-kernel-4.4.55.git

rk fb: send uevent when change video mode

Signed-off-by: hjc <hjc@rock-chips.com>
---

diff --git a/drivers/video/rockchip/rk_fb.c b/drivers/video/rockchip/rk_fb.c
index f9f4936a6838..d808b2c4ceea 100644
--- a/drivers/video/rockchip/rk_fb.c
+++ b/drivers/video/rockchip/rk_fb.c
@@ -3143,6 +3143,7 @@ int rk_fb_switch_screen(struct rk_screen *screen, int enable, int lcdc_id)
 	struct rk_lcdc_driver *dev_drv = NULL;
 	char name[6] = {0};
 	int i, win_id, load_screen = 0;
+	char *envp[3];
 
 	if (unlikely(!rk_fb) || unlikely(!screen))
 		return -ENODEV;
@@ -3169,6 +3170,16 @@ int rk_fb_switch_screen(struct rk_screen *screen, int enable, int lcdc_id)
 		return 0;
 	hdmi_switch_state = 0;
 	dev_drv->hdmi_switch = 1;
+#ifdef CONFIG_SWITCH
+	envp[0] = "switch screen";
+	envp[1] = kmalloc(32, GFP_KERNEL);
+	if (envp[1] == NULL)
+		return 0;
+	sprintf(envp[1], "SCREEN=%d", screen->type);
+	envp[2] = NULL;
+	kobject_uevent_env(&dev_drv->dev->kobj, KOBJ_CHANGE, envp);
+	kfree(envp[1]);
+#endif
 	if ((rk_fb->disp_mode == ONE_DUAL) ||
 	    (rk_fb->disp_mode == NO_DUAL)) {
 		if ((dev_drv->ops->backlight_close) &&