From: xieyi <xieyi@rock-chips.com>
Date: Tue, 9 Oct 2012 10:36:16 +0000 (+0800)
Subject: rk2928: act8931: switch charge current when suspend
X-Git-Tag: firefly_0821_release~8463
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=ba3e1d5c4edabe1e43f34d11eb6acf2687de39a8;p=firefly-linux-kernel-4.4.55.git

rk2928: act8931: switch charge current when suspend
---

diff --git a/arch/arm/mach-rk2928/board-rk2928-sdk-act8931.c b/arch/arm/mach-rk2928/board-rk2928-sdk-act8931.c
index 6a816138d819..d495acb3251a 100755
--- a/arch/arm/mach-rk2928/board-rk2928-sdk-act8931.c
+++ b/arch/arm/mach-rk2928/board-rk2928-sdk-act8931.c
@@ -8,12 +8,16 @@
 
 #ifdef CONFIG_REGULATOR_ACT8931
 
+#define ACT8931_CHGSEL_PIN RK2928_PIN1_PA1
+#define ACT8931_CHGSEL_VALUE GPIO_LOW /* Decline to 20% current */
+
 extern int platform_device_register(struct platform_device *pdev);
 
 static int act8931_set_init(struct act8931 *act8931)
 {
 	struct regulator *dcdc;
 	struct regulator *ldo;
+	int ret;
 	printk("%s,line=%d\n", __func__,__LINE__);
 
 	g_pmic_type = PMIC_TYPE_ACT8931;
@@ -73,6 +77,10 @@ static int act8931_set_init(struct act8931 *act8931)
 	regulator_put(dcdc);
 	udelay(100);
 	
+	ret = gpio_request(ACT8931_CHGSEL_PIN, "ACT8931_CHGSEL");
+	if (ret != 0)
+		gpio_free(ACT8931_CHGSEL_PIN);
+	gpio_direction_output(ACT8931_CHGSEL_PIN, ACT8931_CHGSEL_VALUE);
 
 	printk("%s,line=%d END\n", __func__,__LINE__);
 	
@@ -273,9 +281,19 @@ static struct act8931_platform_data act8931_data={
 	.set_init=act8931_set_init,
 	.num_regulators=7,
 	.regulators=act8931_regulator_subdev_id,
-	
 };
 
+#ifdef CONFIG_HAS_EARLYSUSPEND
+void act8931_early_suspend(struct early_suspend *h)
+{
+	gpio_direction_output(ACT8931_CHGSEL_PIN, ACT8931_CHGSEL_VALUE);
+}
+
+void act8931_late_resume(struct early_suspend *h)
+{
+	gpio_direction_output(ACT8931_CHGSEL_PIN, !ACT8931_CHGSEL_VALUE);
+}
+#endif
 
 #endif
 
diff --git a/drivers/regulator/act8931.c b/drivers/regulator/act8931.c
index 2bc2d429835d..5c7034c9f717 100755
--- a/drivers/regulator/act8931.c
+++ b/drivers/regulator/act8931.c
@@ -22,7 +22,10 @@
 #include <linux/slab.h>
 #include <linux/interrupt.h>
 #include <plat/board.h>
-
+#ifdef CONFIG_HAS_EARLYSUSPEND
+#include <linux/earlysuspend.h>
+#endif
+  
 #if 0
 #define DBG(x...)	printk(KERN_INFO x)
 #else
@@ -42,6 +45,7 @@ struct act8931 {
 	struct i2c_client *i2c;
 	int num_regulators;
 	struct regulator_dev **rdev;
+	struct early_suspend act8931_suspend;
 };
 
 static u8 act8931_reg_read(struct act8931 *act8931, u8 reg);
@@ -586,6 +590,12 @@ static irqreturn_t act8931_irq_thread(unsigned int irq, void *dev_id)
 	rk28_send_wakeup_key();
 	return IRQ_HANDLED;
 }
+
+#ifdef CONFIG_HAS_EARLYSUSPEND
+__weak void act8931_early_suspend(struct early_suspend *h) {}
+__weak void act8931_late_resume(struct early_suspend *h) {}
+#endif
+
 static int __devinit act8931_i2c_probe(struct i2c_client *i2c, const struct i2c_device_id *id)
 {
 	struct act8931 *act8931;	
@@ -657,6 +667,14 @@ static int __devinit act8931_i2c_probe(struct i2c_client *i2c, const struct i2c_
 	}	
 
 	enable_irq_wake(act8931->irq);
+
+	#ifdef CONFIG_HAS_EARLYSUSPEND
+	act8931->act8931_suspend.suspend = act8931_early_suspend,
+	act8931->act8931_suspend.resume = act8931_late_resume,
+	act8931->act8931_suspend.level = EARLY_SUSPEND_LEVEL_DISABLE_FB + 1,
+	register_early_suspend(&act8931->act8931_suspend);
+	#endif
+
 	return 0;
 
 err: