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Subject[PATCH 01/10] mmc: sdhci: Add quirk SDHCI_QUIRK2_SET_BUS_VOLTAGE
Date
Adds quirk for controllers whose bus power select register has to be set
even when powering SD cards from a regulator.

Signed-off-by: Nicolas Saenz Julienne <nsaenzjulienne@suse.de>
---
drivers/mmc/host/sdhci.c | 5 +++++
drivers/mmc/host/sdhci.h | 2 ++
2 files changed, 7 insertions(+)

diff --git a/drivers/mmc/host/sdhci.c b/drivers/mmc/host/sdhci.c
index c59566363a42..c7fd87447457 100644
--- a/drivers/mmc/host/sdhci.c
+++ b/drivers/mmc/host/sdhci.c
@@ -1920,6 +1920,11 @@ static void sdhci_set_power_reg(struct sdhci_host *host, unsigned char mode,

mmc_regulator_set_ocr(mmc, mmc->supply.vmmc, vdd);

+ if (host->quirks2 & SDHCI_QUIRK2_SET_BUS_VOLTAGE) {
+ sdhci_set_power_noreg(host, mode, vdd);
+ return;
+ }
+
if (mode != MMC_POWER_OFF)
sdhci_writeb(host, SDHCI_POWER_ON, SDHCI_POWER_CONTROL);
else
diff --git a/drivers/mmc/host/sdhci.h b/drivers/mmc/host/sdhci.h
index cac2d97782e6..9531a4e5b148 100644
--- a/drivers/mmc/host/sdhci.h
+++ b/drivers/mmc/host/sdhci.h
@@ -484,6 +484,8 @@ struct sdhci_host {
* block count.
*/
#define SDHCI_QUIRK2_USE_32BIT_BLK_CNT (1<<18)
+/* Set bus voltage even when powering from an external regulator */
+#define SDHCI_QUIRK2_SET_BUS_VOLTAGE (1<<19)

int irq; /* Device IRQ */
void __iomem *ioaddr; /* Mapped address */
--
2.25.1
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