5.4-stable review patch. If anyone has any objections, please let me know.
------------------
From: Wenchao Chen <wenchao.chen@xxxxxxxxxx>
commit 477865af60b2117ceaa1d558e03559108c15c78c upstream.
With cat regulator_summary, we found that vqmmc was not shutting
down after the card was pulled.
cat /sys/kernel/debug/regulator/regulator_summary
1.before fix
1)Insert SD card
vddsdio 1 1 0 unknown 3500mV 0mA 1200mV 3750mV
71100000.mmc-vqmmc 1 0mA 3500mV 3600mV
2)Pull out the SD card
vddsdio 1 1 0 unknown 3500mV 0mA 1200mV 3750mV
71100000.mmc-vqmmc 1 0mA 3500mV 3600mV
2.after fix
1)Insert SD cardt
vddsdio 1 1 0 unknown 3500mV 0mA 1200mV 3750mV
71100000.mmc-vqmmc 1 0mA 3500mV 3600mV
2)Pull out the SD card
vddsdio 0 1 0 unknown 3500mV 0mA 1200mV 3750mV
71100000.mmc-vqmmc 0 0mA 3500mV 3600mV
Fixes: fb8bd90f83c4 ("mmc: sdhci-sprd: Add Spreadtrum's initial host controller")
Signed-off-by: Wenchao Chen <wenchao.chen@xxxxxxxxxx>
Cc: stable@xxxxxxxxxxxxxxx
Link: https://lore.kernel.org/r/20231115083406.7368-1-wenchao.chen@xxxxxxxxxx
Signed-off-by: Ulf Hansson <ulf.hansson@xxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/mmc/host/sdhci-sprd.c | 25 +++++++++++++++++++++++++
1 file changed, 25 insertions(+)
--- a/drivers/mmc/host/sdhci-sprd.c
+++ b/drivers/mmc/host/sdhci-sprd.c
@@ -381,12 +381,33 @@ static unsigned int sdhci_sprd_get_ro(st
return 0;
}
+static void sdhci_sprd_set_power(struct sdhci_host *host, unsigned char mode,
+ unsigned short vdd)
+{
+ struct mmc_host *mmc = host->mmc;
+
+ switch (mode) {
+ case MMC_POWER_OFF:
+ mmc_regulator_set_ocr(host->mmc, mmc->supply.vmmc, 0);
+
+ mmc_regulator_disable_vqmmc(mmc);
+ break;
+ case MMC_POWER_ON:
+ mmc_regulator_enable_vqmmc(mmc);
+ break;
+ case MMC_POWER_UP:
+ mmc_regulator_set_ocr(host->mmc, mmc->supply.vmmc, vdd);
+ break;
+ }
+}
+
static struct sdhci_ops sdhci_sprd_ops = {
.read_l = sdhci_sprd_readl,
.write_l = sdhci_sprd_writel,
.write_w = sdhci_sprd_writew,
.write_b = sdhci_sprd_writeb,
.set_clock = sdhci_sprd_set_clock,
+ .set_power = sdhci_sprd_set_power,
.get_max_clock = sdhci_sprd_get_max_clock,
.get_min_clock = sdhci_sprd_get_min_clock,
.set_bus_width = sdhci_set_bus_width,
@@ -630,6 +651,10 @@ static int sdhci_sprd_probe(struct platf
host->caps1 &= ~(SDHCI_SUPPORT_SDR50 | SDHCI_SUPPORT_SDR104 |
SDHCI_SUPPORT_DDR50);
+ ret = mmc_regulator_get_supply(host->mmc);
+ if (ret)
+ goto pm_runtime_disable;
+
ret = sdhci_setup_host(host);
if (ret)
goto pm_runtime_disable;
