diff options
| author | Adrian Hunter <adrian.hunter@intel.com> | 2017-03-20 19:50:32 +0200 |
|---|---|---|
| committer | Ulf Hansson <ulf.hansson@linaro.org> | 2017-04-24 21:41:26 +0200 |
| commit | d38dcad4e7b48f3d68d5d058f8f4f52a99862e6e (patch) | |
| tree | 654812cebbf2ed25a161d9b405f038fe20d381a8 /drivers/mmc/host/sdhci-acpi.c | |
| parent | 5a436cc0af6202265de0d2d2d35f1b4fd85caf3b (diff) | |
| download | lwn-d38dcad4e7b48f3d68d5d058f8f4f52a99862e6e.tar.gz lwn-d38dcad4e7b48f3d68d5d058f8f4f52a99862e6e.zip | |
mmc: sdhci: Let drivers decide whether to use mmc_retune_needed() with pm
Devices might save and restore tuning values so that re-tuning might not be
needed after a pm transition. Let drivers decide by pushing the
mmc_retune_needed() logic down to them.
Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Tested-by: Ludovic Desroches <ludovic.desroches@microchip.com>
Diffstat (limited to 'drivers/mmc/host/sdhci-acpi.c')
| -rw-r--r-- | drivers/mmc/host/sdhci-acpi.c | 12 |
1 files changed, 10 insertions, 2 deletions
diff --git a/drivers/mmc/host/sdhci-acpi.c b/drivers/mmc/host/sdhci-acpi.c index 9dcb7048e3b1..665c5f3009b4 100644 --- a/drivers/mmc/host/sdhci-acpi.c +++ b/drivers/mmc/host/sdhci-acpi.c @@ -524,8 +524,12 @@ static int sdhci_acpi_remove(struct platform_device *pdev) static int sdhci_acpi_suspend(struct device *dev) { struct sdhci_acpi_host *c = dev_get_drvdata(dev); + struct sdhci_host *host = c->host; - return sdhci_suspend_host(c->host); + if (host->tuning_mode != SDHCI_TUNING_MODE_3) + mmc_retune_needed(host->mmc); + + return sdhci_suspend_host(host); } static int sdhci_acpi_resume(struct device *dev) @@ -544,8 +548,12 @@ static int sdhci_acpi_resume(struct device *dev) static int sdhci_acpi_runtime_suspend(struct device *dev) { struct sdhci_acpi_host *c = dev_get_drvdata(dev); + struct sdhci_host *host = c->host; + + if (host->tuning_mode != SDHCI_TUNING_MODE_3) + mmc_retune_needed(host->mmc); - return sdhci_runtime_suspend_host(c->host); + return sdhci_runtime_suspend_host(host); } static int sdhci_acpi_runtime_resume(struct device *dev) |