Messages in this thread Patch in this message | | | From | Wenyou Yang <> | Subject | [PATCH v2] mmc: atmel-mci: adopt pinctrl support | Date | Fri, 7 Nov 2014 08:48:13 +0800 |
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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> --- Hi Ulf,
Thanks a lot.
According to your advice, remove pinctrl_pm_select_default_state(&pdev->dev) from the _probe function.
Best Regards, Wenyou Yang
drivers/mmc/host/atmel-mci.c | 5 +++++ 1 file changed, 5 insertions(+)
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 -- 1.7.9.5
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