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| author | Adrian Hunter <adrian.hunter@intel.com> | 2012-12-10 21:18:48 +0100 |
|---|---|---|
| committer | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2012-12-10 21:18:48 +0100 |
| commit | e5571397175be315bc6177ba39945dab538793b1 (patch) | |
| tree | 1b277e27c73d6e18fdaae196c4caa6a6b50e91d4 /drivers/mmc | |
| parent | 5e7779f0395833d80d8fa15933737c8dc48759ec (diff) | |
| download | linux-e5571397175be315bc6177ba39945dab538793b1.tar.gz linux-e5571397175be315bc6177ba39945dab538793b1.tar.bz2 linux-e5571397175be315bc6177ba39945dab538793b1.zip | |
mmc: sdhci-acpi: enable runtime-pm for device HID INT33C6
sdhci-acpi supports ACPI devices which have compatibility ID
PNP0D40, however it is not possible to know if those devices
will all work correctly with runtime-pm, so that must be configured
per hardware ID.
For INT33C6, several related quirks, capabilities and flags are set:
MMC_CAP_NONREMOVABLE
The SDIO card will never be removable
SDHCI_ACPI_RUNTIME_PM
Enable runtime-pm of the host controller
MMC_CAP_POWER_OFF_CARD
Enable runtime-pm of the SDIO card
MMC_PM_KEEP_POWER
SDIO card has the capability to remain powered up
during system suspend
SDHCI_QUIRK2_HOST_OFF_CARD_ON
Always do a full reset during system resume
because the card may be already initialized having
not been powered off.
Wake-ups from the INT33C6 host controller are not supported, so the
following capability must *not* be set:
MMC_PM_WAKE_SDIO_IRQ
Enable wake on card interrupt
Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Acked-by: Chris Ball <cjb@laptop.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Diffstat (limited to 'drivers/mmc')
| -rw-r--r-- | drivers/mmc/host/sdhci-acpi.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/drivers/mmc/host/sdhci-acpi.c b/drivers/mmc/host/sdhci-acpi.c index 6ac361744d36..12b0a78497f6 100644 --- a/drivers/mmc/host/sdhci-acpi.c +++ b/drivers/mmc/host/sdhci-acpi.c @@ -87,7 +87,15 @@ static const struct sdhci_ops sdhci_acpi_ops_dflt = { .enable_dma = sdhci_acpi_enable_dma, }; +static const struct sdhci_acpi_slot sdhci_acpi_slot_int_sdio = { + .quirks2 = SDHCI_QUIRK2_HOST_OFF_CARD_ON, + .caps = MMC_CAP_NONREMOVABLE | MMC_CAP_POWER_OFF_CARD, + .flags = SDHCI_ACPI_RUNTIME_PM, + .pm_caps = MMC_PM_KEEP_POWER, +}; + static const struct acpi_device_id sdhci_acpi_ids[] = { + { "INT33C6", (kernel_ulong_t)&sdhci_acpi_slot_int_sdio }, { "PNP0D40" }, { }, }; |