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From b862ceba838786ac81aa6a295ad91a54aff6909d Mon Sep 17 00:00:00 2001
From: Gao Pan <b54642@freescale.com>
Date: Tue, 25 Aug 2015 14:00:32 +0800
Subject: [PATCH] MLK-11403: I2C: imx: restore pin setting for i2c
restore pin setting for i2c in suspend/resume
Signed-off-by: Gao Pan <gaopan@freescale.com>
(Vipul: Fixed merge conflicts)
Signed-off-by: Vipul Kumar <vipul_kumar@mentor.com>
(cherry picked from commit 42b5aa1d72c09015d435459c6a59022255e3ef21)
---
drivers/i2c/busses/i2c-imx.c | 19 +++++++++++++++++--
1 file changed, 17 insertions(+), 2 deletions(-)
--- a/drivers/i2c/busses/i2c-imx.c
+++ b/drivers/i2c/busses/i2c-imx.c
@@ -1227,7 +1227,8 @@ static int __maybe_unused i2c_imx_runtim
{
struct imx_i2c_struct *i2c_imx = dev_get_drvdata(dev);
- clk_disable(i2c_imx->clk);
+ clk_disable_unprepare(i2c_imx->clk);
+ pinctrl_pm_select_sleep_state(dev);
return 0;
}
@@ -1237,14 +1238,28 @@ static int __maybe_unused i2c_imx_runtim
struct imx_i2c_struct *i2c_imx = dev_get_drvdata(dev);
int ret;
- ret = clk_enable(i2c_imx->clk);
+ pinctrl_pm_select_default_state(dev);
+ ret = clk_prepare_enable(i2c_imx->clk);
if (ret)
dev_err(dev, "can't enable I2C clock, ret=%d\n", ret);
return ret;
}
+static int i2c_imx_suspend(struct device *dev)
+{
+ pinctrl_pm_select_sleep_state(dev);
+ return 0;
+}
+
+static int i2c_imx_resume(struct device *dev)
+{
+ pinctrl_pm_select_default_state(dev);
+ return 0;
+}
+
static const struct dev_pm_ops i2c_imx_pm_ops = {
+ SET_SYSTEM_SLEEP_PM_OPS(i2c_imx_suspend, i2c_imx_resume)
SET_RUNTIME_PM_OPS(i2c_imx_runtime_suspend,
i2c_imx_runtime_resume, NULL)
};
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