Commit b5b64fa6 authored by Wenyou Yang's avatar Wenyou Yang Committed by Ulf Hansson
Browse files

mmc: atmel-mci: adopt pinctrl support 



Amend the atmel mci pin controller to optionally take a pin control
handle and set the state of the pins to:
- "default" on boot, resume and before performing an transfer.
- "sleep" on suspend().

This should make it possible to optimize energy usage for the pins
both for the suspend/resume cycle.

Signed-off-by: default avatarWenyou Yang <wenyou.yang@atmel.com>
Signed-off-by: default avatarUlf Hansson <ulf.hansson@linaro.org>
parent e9fb05d5

drivers/mmc/host/atmel-mci.c

+5 −0
Original line number Diff line number Diff line
@@ -39,6 +39,7 @@ 
#include <linux/atmel_pdc.h>

#include <linux/pm.h>

#include <linux/pm_runtime.h>

#include <linux/pinctrl/consumer.h>



#include <asm/cacheflush.h>

#include <asm/io.h>
@@ -2568,6 +2569,8 @@ static int atmci_runtime_suspend(struct device *dev) 


	clk_disable_unprepare(host->mck);



	pinctrl_pm_select_sleep_state(dev);



	return 0;

}
@@ -2575,6 +2578,8 @@ static int atmci_runtime_resume(struct device *dev) 
{

	struct atmel_mci *host = dev_get_drvdata(dev);



	pinctrl_pm_select_default_state(dev);



	return clk_prepare_enable(host->mck);

}

#endif