diff options
| author | Wenyou Yang <wenyou.yang@atmel.com> | 2014-11-07 08:48:13 +0800 |
|---|---|---|
| committer | Ulf Hansson <ulf.hansson@linaro.org> | 2014-11-26 14:30:52 +0100 |
| commit | b5b64fa6cd6bd053db2b89a41792597d08913036 (patch) | |
| tree | ed360bb147a0b62a3aac778f5d7b0ad3bd49a1b1 /drivers/mmc | |
| parent | e9fb05d5bca7428f2749d059559e9657c710fe53 (diff) | |
| download | op-kernel-dev-b5b64fa6cd6bd053db2b89a41792597d08913036.zip op-kernel-dev-b5b64fa6cd6bd053db2b89a41792597d08913036.tar.gz | |
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: Wenyou Yang <wenyou.yang@atmel.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Diffstat (limited to 'drivers/mmc')
| -rw-r--r-- | drivers/mmc/host/atmel-mci.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/drivers/mmc/host/atmel-mci.c b/drivers/mmc/host/atmel-mci.c index 4df1599..a7b59ba 100644 --- a/drivers/mmc/host/atmel-mci.c +++ b/drivers/mmc/host/atmel-mci.c @@ -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 |
