From: lhh <lhh@rock-chips.com>
Date: Thu, 27 Jan 2011 09:07:03 +0000 (+0800)
Subject: delay 2s for the same sdcard check
X-Git-Tag: firefly_0821_release~10789^2~2
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=0a70ec0d75c1db05002ef64fd00a9a4339eab3b6;p=firefly-linux-kernel-4.4.55.git

delay 2s for the same sdcard check
---

diff --git a/drivers/mmc/host/rk29_sdmmc.c b/drivers/mmc/host/rk29_sdmmc.c
index cf846eec5fc6..55c07dbd9b34 100755
--- a/drivers/mmc/host/rk29_sdmmc.c
+++ b/drivers/mmc/host/rk29_sdmmc.c
@@ -1150,7 +1150,7 @@ static irqreturn_t rk29_sdmmc_interrupt(int irq, void *dev_id)
 	u32			status,  pending;
 	unsigned int		pass_count = 0;
 	bool present;
-	//bool present_old;
+	bool present_old;
 
 	spin_lock(&host->lock);
 	do {
@@ -1161,16 +1161,17 @@ static irqreturn_t rk29_sdmmc_interrupt(int irq, void *dev_id)
 		if(pending & SDMMC_INT_CD) {
 		    rk29_sdmmc_write(host->regs, SDMMC_RINTSTS, SDMMC_INT_CD); // clear sd detect int
 			present = rk29_sdmmc_get_cd(host->mmc);
-			//present_old = test_bit(RK29_SDMMC_CARD_PRESENT, &host->flags);
-			//if(present != present_old) {
-				if (present != 0) {
-					set_bit(RK29_SDMMC_CARD_PRESENT, &host->flags);
+			present_old = test_bit(RK29_SDMMC_CARD_PRESENT, &host->flags);
+			if (present != 0) {
+				set_bit(RK29_SDMMC_CARD_PRESENT, &host->flags);
+				if(present == present_old)	
+					mod_timer(&host->detect_timer, jiffies + msecs_to_jiffies(2000));
+				else
 					mod_timer(&host->detect_timer, jiffies + msecs_to_jiffies(200));
-				} else {					
-					clear_bit(RK29_SDMMC_CARD_PRESENT, &host->flags);
-					mod_timer(&host->detect_timer, jiffies + msecs_to_jiffies(10));					
-				}							
-			//}
+			} else {					
+				clear_bit(RK29_SDMMC_CARD_PRESENT, &host->flags);
+				mod_timer(&host->detect_timer, jiffies + msecs_to_jiffies(10));					
+			}						
 		}	
 		if(pending & RK29_SDMMC_CMD_ERROR_FLAGS) {
 		    rk29_sdmmc_write(host->regs, SDMMC_RINTSTS,RK29_SDMMC_CMD_ERROR_FLAGS);  //  clear interrupt