diff options
| author | Dong Aisheng <b29396@freescale.com> | 2013-11-11 14:53:58 +0800 |
|---|---|---|
| committer | Nitin Garg <nitin.garg@freescale.com> | 2014-04-16 08:47:09 -0500 |
| commit | eb22f8818c423968993d478014059fed2f1874e4 (patch) | |
| tree | 06b5837e47e9b858664eccdcefe6c354ab747802 /drivers/mmc/host/sdhci-esdhc-imx.c | |
| parent | 59dcd71f323dde9ddc019baad92362a65b0e2b54 (diff) | |
ENGR00287331-2 sdhci-esdhc-imx: use bus freq in runtime pm
Request BUS_FREQ_HIGH when bus is busy and then release BUS_FREQ_HIGH
when bus becomes idle.
Signed-off-by: Dong Aisheng <b29396@freescale.com>
Diffstat (limited to 'drivers/mmc/host/sdhci-esdhc-imx.c')
| -rw-r--r-- | drivers/mmc/host/sdhci-esdhc-imx.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/drivers/mmc/host/sdhci-esdhc-imx.c b/drivers/mmc/host/sdhci-esdhc-imx.c index 3faf738b7f45..26a0f762d644 100644 --- a/drivers/mmc/host/sdhci-esdhc-imx.c +++ b/drivers/mmc/host/sdhci-esdhc-imx.c @@ -11,6 +11,7 @@ * the Free Software Foundation; either version 2 of the License. */ +#include <linux/busfreq-imx6.h> #include <linux/io.h> #include <linux/delay.h> #include <linux/err.h> @@ -1021,6 +1022,8 @@ static int sdhci_esdhc_imx_probe(struct platform_device *pdev) pltfm_host->clk = imx_data->clk_per; + request_bus_freq(BUS_FREQ_HIGH); + clk_prepare_enable(imx_data->clk_per); clk_prepare_enable(imx_data->clk_ipg); clk_prepare_enable(imx_data->clk_ahb); @@ -1157,6 +1160,7 @@ disable_clk: clk_disable_unprepare(imx_data->clk_per); clk_disable_unprepare(imx_data->clk_ipg); clk_disable_unprepare(imx_data->clk_ahb); + release_bus_freq(BUS_FREQ_HIGH); free_sdhci: sdhci_pltfm_free(pdev); return err; @@ -1197,6 +1201,8 @@ static int sdhci_esdhc_runtime_suspend(struct device *dev) clk_disable_unprepare(imx_data->clk_ipg); clk_disable_unprepare(imx_data->clk_ahb); + release_bus_freq(BUS_FREQ_HIGH); + return ret; } @@ -1206,6 +1212,8 @@ static int sdhci_esdhc_runtime_resume(struct device *dev) struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host); struct pltfm_imx_data *imx_data = pltfm_host->priv; + request_bus_freq(BUS_FREQ_HIGH); + clk_prepare_enable(imx_data->clk_per); clk_prepare_enable(imx_data->clk_ipg); clk_prepare_enable(imx_data->clk_ahb); |