From: lw@rock-chips.com <lw@rock-chips.com>
Date: Wed, 25 Apr 2012 02:40:31 +0000 (+0800)
Subject: rk30_phone:add suspend and resume for discrete regulator
X-Git-Tag: firefly_0821_release~9321
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=0b5f75565ed917059b394ad3dc9dd1f218d042e4;p=firefly-linux-kernel-4.4.55.git

rk30_phone:add suspend and resume for discrete regulator
---

diff --git a/drivers/regulator/rk30-pwm-regulator.c b/drivers/regulator/rk30-pwm-regulator.c
index 62356b88e52e..7a89527b0b06 100755
--- a/drivers/regulator/rk30-pwm-regulator.c
+++ b/drivers/regulator/rk30-pwm-regulator.c
@@ -313,6 +313,22 @@ err:
 	return ret;
 
 }
+
+static int pwm_regulator_suspend(struct platform_device *pdev, pm_message_t state)
+{
+	struct pwm_platform_data *pdata = pdev->dev.platform_data;
+	pwm_set_rate(pdata,1000*1000,0);//pwm clk will change to 24M after suspend
+	DBG("%s,pwm_id=%d\n",__func__,pdata->pwm_id);
+	return 0;
+}
+
+static int pwm_regulator_resume(struct platform_device *pdev)
+{
+	struct pwm_platform_data *pdata = pdev->dev.platform_data;
+	DBG("%s,pwm_id=%d\n",__func__,pdata->pwm_id);
+	return 0;
+}
+
 static int __devexit pwm_regulator_remove(struct platform_device *pdev)
 {
 	struct pwm_platform_data *pdata = pdev->dev.platform_data;
@@ -328,6 +344,8 @@ static struct platform_driver pwm_regulator_driver = {
 	.driver = {
 		.name = "pwm-voltage-regulator",
 	},
+	.suspend = pwm_regulator_suspend,
+	.resume = pwm_regulator_resume,
 	.remove = __devexit_p(pwm_regulator_remove),
 };