mmc: sdhci-sprd: Fix vqmmc not shutting down after the card was pulled
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: fb8bd90f83
("mmc: sdhci-sprd: Add Spreadtrum's initial host controller")
Signed-off-by: Wenchao Chen <wenchao.chen@unisoc.com>
Cc: stable@vger.kernel.org
Link: https://lore.kernel.org/r/20231115083406.7368-1-wenchao.chen@unisoc.com
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
This commit is contained in:
parent
d9ed644f58
commit
477865af60
@ -416,12 +416,33 @@ static void sdhci_sprd_request_done(struct sdhci_host *host,
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mmc_request_done(host->mmc, mrq);
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}
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static void sdhci_sprd_set_power(struct sdhci_host *host, unsigned char mode,
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unsigned short vdd)
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{
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struct mmc_host *mmc = host->mmc;
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switch (mode) {
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case MMC_POWER_OFF:
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mmc_regulator_set_ocr(host->mmc, mmc->supply.vmmc, 0);
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mmc_regulator_disable_vqmmc(mmc);
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break;
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case MMC_POWER_ON:
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mmc_regulator_enable_vqmmc(mmc);
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break;
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case MMC_POWER_UP:
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mmc_regulator_set_ocr(host->mmc, mmc->supply.vmmc, vdd);
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break;
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}
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}
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static struct sdhci_ops sdhci_sprd_ops = {
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.read_l = sdhci_sprd_readl,
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.write_l = sdhci_sprd_writel,
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.write_w = sdhci_sprd_writew,
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.write_b = sdhci_sprd_writeb,
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.set_clock = sdhci_sprd_set_clock,
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.set_power = sdhci_sprd_set_power,
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.get_max_clock = sdhci_sprd_get_max_clock,
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.get_min_clock = sdhci_sprd_get_min_clock,
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.set_bus_width = sdhci_set_bus_width,
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@ -823,6 +844,10 @@ static int sdhci_sprd_probe(struct platform_device *pdev)
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host->caps1 &= ~(SDHCI_SUPPORT_SDR50 | SDHCI_SUPPORT_SDR104 |
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SDHCI_SUPPORT_DDR50);
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ret = mmc_regulator_get_supply(host->mmc);
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if (ret)
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goto pm_runtime_disable;
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ret = sdhci_setup_host(host);
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if (ret)
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goto pm_runtime_disable;
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