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authorMasahiro Yamada <yamada.masahiro@socionext.com>2017-08-23 13:15:02 +0900
committerUlf Hansson <ulf.hansson@linaro.org>2017-08-30 15:03:44 +0200
commit1ab0d2d79b9a3868afd1afb172f0e084f0915892 (patch)
tree50c0d7b24cbbe93e9b9fc32fb03603a6a711b76e /drivers/mmc
parent3fd1d86f03cbcc7a894cf0e7a70e8758c5f12882 (diff)
downloadlinux-1ab0d2d79b9a3868afd1afb172f0e084f0915892.tar.bz2
mmc: sdhci: enable/disable the clock in sdhci_pltfm_suspend/resume
This commit provides similar cleanups as commit 83eacdfa2529 ("mmc: sdhci: disable the clock in sdhci_pltfm_unregister()") did for unregister hooks. sdhci-brcmstb.c and sdhci-sirf.c implement their own suspend/resume hooks to handle pltfm_host->clk. Move clock handling to sdhci_pltfm.c so that the drivers can reuse sdhci_pltfm_pmops. The following drivers did not previously touch pltfm_host->clk during suspend/resume, but now do: - sdhci-bcm-kona.c - sdhci-dove.c - sdhci-iproc.c - sdhci-pxav2.c - sdhci-tegra.c - sdhci-xenon.c Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com> Acked-by: Adrian Hunter <adrian.hunter@intel.com> Acked-by: Al Cooper <alcooperx@gmail.com> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Diffstat (limited to 'drivers/mmc')
-rw-r--r--drivers/mmc/host/sdhci-brcmstb.c37
-rw-r--r--drivers/mmc/host/sdhci-pltfm.c22
-rw-r--r--drivers/mmc/host/sdhci-sirf.c39
3 files changed, 22 insertions, 76 deletions
diff --git a/drivers/mmc/host/sdhci-brcmstb.c b/drivers/mmc/host/sdhci-brcmstb.c
index 3a64c13f2412..552bddc5096c 100644
--- a/drivers/mmc/host/sdhci-brcmstb.c
+++ b/drivers/mmc/host/sdhci-brcmstb.c
@@ -21,41 +21,6 @@
#include "sdhci-pltfm.h"
-#ifdef CONFIG_PM_SLEEP
-
-static int sdhci_brcmstb_suspend(struct device *dev)
-{
- struct sdhci_host *host = dev_get_drvdata(dev);
- struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);
- int res;
-
- if (host->tuning_mode != SDHCI_TUNING_MODE_3)
- mmc_retune_needed(host->mmc);
-
- res = sdhci_suspend_host(host);
- if (res)
- return res;
- clk_disable_unprepare(pltfm_host->clk);
- return res;
-}
-
-static int sdhci_brcmstb_resume(struct device *dev)
-{
- struct sdhci_host *host = dev_get_drvdata(dev);
- struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);
- int err;
-
- err = clk_prepare_enable(pltfm_host->clk);
- if (err)
- return err;
- return sdhci_resume_host(host);
-}
-
-#endif /* CONFIG_PM_SLEEP */
-
-static SIMPLE_DEV_PM_OPS(sdhci_brcmstb_pmops, sdhci_brcmstb_suspend,
- sdhci_brcmstb_resume);
-
static const struct sdhci_ops sdhci_brcmstb_ops = {
.set_clock = sdhci_set_clock,
.set_bus_width = sdhci_set_bus_width,
@@ -131,7 +96,7 @@ MODULE_DEVICE_TABLE(of, sdhci_brcm_of_match);
static struct platform_driver sdhci_brcmstb_driver = {
.driver = {
.name = "sdhci-brcmstb",
- .pm = &sdhci_brcmstb_pmops,
+ .pm = &sdhci_pltfm_pmops,
.of_match_table = of_match_ptr(sdhci_brcm_of_match),
},
.probe = sdhci_brcmstb_probe,
diff --git a/drivers/mmc/host/sdhci-pltfm.c b/drivers/mmc/host/sdhci-pltfm.c
index e090d8c42ddb..4c0135e184e9 100644
--- a/drivers/mmc/host/sdhci-pltfm.c
+++ b/drivers/mmc/host/sdhci-pltfm.c
@@ -212,18 +212,36 @@ EXPORT_SYMBOL_GPL(sdhci_pltfm_unregister);
static int sdhci_pltfm_suspend(struct device *dev)
{
struct sdhci_host *host = dev_get_drvdata(dev);
+ struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);
+ int ret;
if (host->tuning_mode != SDHCI_TUNING_MODE_3)
mmc_retune_needed(host->mmc);
- return sdhci_suspend_host(host);
+ ret = sdhci_suspend_host(host);
+ if (ret)
+ return ret;
+
+ clk_disable_unprepare(pltfm_host->clk);
+
+ return 0;
}
static int sdhci_pltfm_resume(struct device *dev)
{
struct sdhci_host *host = dev_get_drvdata(dev);
+ struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);
+ int ret;
+
+ ret = clk_prepare_enable(pltfm_host->clk);
+ if (ret)
+ return ret;
- return sdhci_resume_host(host);
+ ret = sdhci_resume_host(host);
+ if (ret)
+ clk_disable_unprepare(pltfm_host->clk);
+
+ return ret;
}
#endif
diff --git a/drivers/mmc/host/sdhci-sirf.c b/drivers/mmc/host/sdhci-sirf.c
index 556b0cf67cc5..391d52b467ca 100644
--- a/drivers/mmc/host/sdhci-sirf.c
+++ b/drivers/mmc/host/sdhci-sirf.c
@@ -230,43 +230,6 @@ err_clk_prepare:
return ret;
}
-#ifdef CONFIG_PM_SLEEP
-static int sdhci_sirf_suspend(struct device *dev)
-{
- struct sdhci_host *host = dev_get_drvdata(dev);
- struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);
- int ret;
-
- if (host->tuning_mode != SDHCI_TUNING_MODE_3)
- mmc_retune_needed(host->mmc);
-
- ret = sdhci_suspend_host(host);
- if (ret)
- return ret;
-
- clk_disable(pltfm_host->clk);
-
- return 0;
-}
-
-static int sdhci_sirf_resume(struct device *dev)
-{
- struct sdhci_host *host = dev_get_drvdata(dev);
- struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);
- int ret;
-
- ret = clk_enable(pltfm_host->clk);
- if (ret) {
- dev_dbg(dev, "Resume: Error enabling clock\n");
- return ret;
- }
-
- return sdhci_resume_host(host);
-}
-#endif
-
-static SIMPLE_DEV_PM_OPS(sdhci_sirf_pm_ops, sdhci_sirf_suspend, sdhci_sirf_resume);
-
static const struct of_device_id sdhci_sirf_of_match[] = {
{ .compatible = "sirf,prima2-sdhc" },
{ }
@@ -277,7 +240,7 @@ static struct platform_driver sdhci_sirf_driver = {
.driver = {
.name = "sdhci-sirf",
.of_match_table = sdhci_sirf_of_match,
- .pm = &sdhci_sirf_pm_ops,
+ .pm = &sdhci_pltfm_pmops,
},
.probe = sdhci_sirf_probe,
.remove = sdhci_pltfm_unregister,