diff options
| author | Chander Kashyap <chander.kashyap@gmail.com> | 2012-09-21 05:42:08 +0000 |
|---|---|---|
| committer | Chris Ball <cjb@laptop.org> | 2012-10-07 17:41:43 -0400 |
| commit | 2abeb5c5ded2e7f7d288058426fb0ae852adc77f (patch) | |
| tree | cd175007e32205094e91c424ba7e70da5710de21 /drivers | |
| parent | 9cde5b7a49a88939d648c361ec938fa8a633a045 (diff) | |
mmc: sdhci-s3c: Add clk_(enable/disable) in runtime suspend/resume
Perform clock disable/enable in runtime suspend/resume.
Signed-off-by: Chander Kashyap <chander.kashyap@linaro.org>
Acked-by: Jaehoon Chung <jh80.chung@samsung.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/mmc/host/sdhci-s3c.c | 29 |
1 files changed, 27 insertions, 2 deletions
diff --git a/drivers/mmc/host/sdhci-s3c.c b/drivers/mmc/host/sdhci-s3c.c index e0196726b132..2903949594c6 100644 --- a/drivers/mmc/host/sdhci-s3c.c +++ b/drivers/mmc/host/sdhci-s3c.c @@ -637,7 +637,9 @@ static int __devinit sdhci_s3c_probe(struct platform_device *pdev) goto err_no_busclks; } +#ifndef CONFIG_PM_RUNTIME clk_enable(sc->clk_bus[sc->cur_clk]); +#endif res = platform_get_resource(pdev, IORESOURCE_MEM, 0); host->ioaddr = devm_request_and_ioremap(&pdev->dev, res); @@ -744,10 +746,15 @@ static int __devinit sdhci_s3c_probe(struct platform_device *pdev) gpio_is_valid(pdata->ext_cd_gpio)) sdhci_s3c_setup_card_detect_gpio(sc); +#ifdef CONFIG_PM_RUNTIME + clk_disable(sc->clk_io); +#endif return 0; err_req_regs: +#ifndef CONFIG_PM_RUNTIME clk_disable(sc->clk_bus[sc->cur_clk]); +#endif for (ptr = 0; ptr < MAX_BUS_CLK; ptr++) { if (sc->clk_bus[ptr]) { clk_put(sc->clk_bus[ptr]); @@ -786,12 +793,17 @@ static int __devexit sdhci_s3c_remove(struct platform_device *pdev) if (gpio_is_valid(sc->ext_cd_gpio)) gpio_free(sc->ext_cd_gpio); +#ifdef CONFIG_PM_RUNTIME + clk_enable(sc->clk_io); +#endif sdhci_remove_host(host, 1); pm_runtime_dont_use_autosuspend(&pdev->dev); pm_runtime_disable(&pdev->dev); +#ifndef CONFIG_PM_RUNTIME clk_disable(sc->clk_bus[sc->cur_clk]); +#endif for (ptr = 0; ptr < MAX_BUS_CLK; ptr++) { if (sc->clk_bus[ptr]) { clk_put(sc->clk_bus[ptr]); @@ -831,15 +843,28 @@ static int sdhci_s3c_resume(struct device *dev) static int sdhci_s3c_runtime_suspend(struct device *dev) { struct sdhci_host *host = dev_get_drvdata(dev); + struct sdhci_s3c *ourhost = to_s3c(host); + struct clk *busclk = ourhost->clk_io; + int ret; + + ret = sdhci_runtime_suspend_host(host); - return sdhci_runtime_suspend_host(host); + clk_disable(ourhost->clk_bus[ourhost->cur_clk]); + clk_disable(busclk); + return ret; } static int sdhci_s3c_runtime_resume(struct device *dev) { struct sdhci_host *host = dev_get_drvdata(dev); + struct sdhci_s3c *ourhost = to_s3c(host); + struct clk *busclk = ourhost->clk_io; + int ret; - return sdhci_runtime_resume_host(host); + clk_enable(busclk); + clk_enable(ourhost->clk_bus[ourhost->cur_clk]); + ret = sdhci_runtime_resume_host(host); + return ret; } #endif |