On 04/20/2016 04:53 PM, Lars Persson wrote:
Add a start_signal_voltage_switch() operation to support enabling of
UHS modes.
Signed-off-by: Lars Persson <larper@xxxxxxxx>
---
drivers/mmc/host/usdhi6rol0.c | 13 +++++++++++++
1 file changed, 13 insertions(+)
diff --git a/drivers/mmc/host/usdhi6rol0.c b/drivers/mmc/host/usdhi6rol0.c
index 807c06e..2585ea4 100644
--- a/drivers/mmc/host/usdhi6rol0.c
+++ b/drivers/mmc/host/usdhi6rol0.c
@@ -1147,12 +1147,25 @@ static void usdhi6_enable_sdio_irq(struct mmc_host *mmc, int enable)
}
}
+static int usdhi6_sig_volt_switch(struct mmc_host *mmc, struct mmc_ios *ios)
+{
+ int ret;
+
To support boards without regulator we need to put a
IS_ERR_OR_NULL(mmc->supply.vqmmc) check here and bail out with return 0.
Missing vqmmc is OK according to our binding document, but treated as an
error by mmc_regulator_set_vqmmc().
+ ret = mmc_regulator_set_vqmmc(mmc, ios);
+
+ if (ret < 0)
+ dev_warn(mmc_dev(mmc), "Voltage switch failed: %d\n", ret);
+
+ return ret;
+}
+
static struct mmc_host_ops usdhi6_ops = {
.request = usdhi6_request,
.set_ios = usdhi6_set_ios,
.get_cd = usdhi6_get_cd,
.get_ro = usdhi6_get_ro,
.enable_sdio_irq = usdhi6_enable_sdio_irq,
+ .start_signal_voltage_switch = usdhi6_sig_volt_switch,
};
/* State machine handlers */
--
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