From: Rich.jiangyk <jyk@rock-chips.com>
Date: Thu, 16 Sep 2010 07:00:10 +0000 (+0800)
Subject: update rk2818_backlight.c to correct bl suspend and resume
X-Git-Tag: firefly_0821_release~11134
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=29b3db33b44bcbb0d9c399aad9939446927c9516;p=firefly-linux-kernel-4.4.55.git

update rk2818_backlight.c to correct bl suspend and resume

1. old rk2818_backlight.c  use CONFIG_ANDROID_POWER macro, which is no longer supported,
lyx changed to use CONFIG_HAS_EARLYSUSPEND.  This sovled lcd blanking when resuming.
2. changed backlight module init into late_initcall from rootfs_initcall, this solve the
problem of blanking when powered on.
3. updated:  close dbg info and  comments.
note: code mod by lyx, commited by jyk
---

diff --git a/drivers/video/backlight/rk2818_backlight.c b/drivers/video/backlight/rk2818_backlight.c
index e44f2e3d1db5..759b79adc239 100644
--- a/drivers/video/backlight/rk2818_backlight.c
+++ b/drivers/video/backlight/rk2818_backlight.c
@@ -41,7 +41,7 @@
 /*
  * Debug
  */
-#if 1
+#if 0
 #define DBG(x...)	printk(KERN_INFO x)
 #else
 #define DBG(x...)
@@ -193,7 +193,9 @@ static void rk2818_bl_suspend(struct early_suspend *h)
     } else {
         divh = div_total;
     }
-    DBG("%s: ==========  jyk  suspend  =============== \n",__func__); 
+
+    DBG("%s: ==========  suspend  =============== \n",__func__); 
+
     write_pwm_reg(id, PWM_REG_HRC, divh);
 
     suspend_flag = 1;
@@ -242,7 +244,7 @@ static int rk2818_backlight_probe(struct platform_device *pdev)
     u32 divh, div_total;
     struct clk* arm_pclk; 
  
-    DBG("%s::============== jyk  ==========================\n",__func__);
+    DBG("%s::=======================================\n",__func__);
 
     if (rk2818_bl) {
         DBG(KERN_CRIT "%s: backlight device register has existed \n",