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| author | Veerabhadrarao Badiganti <vbadigan@codeaurora.org> | 2020-03-06 15:08:43 +0100 |
|---|---|---|
| committer | Ulf Hansson <ulf.hansson@linaro.org> | 2020-03-24 14:39:52 +0100 |
| commit | 5cf583f1fb9c5ca8862c8a1c688874dc85e594f5 (patch) | |
| tree | 3e223edfa04ec6950bcc1df84f88a37f2fc377b9 /drivers/mmc/host/sdhci-msm.c | |
| parent | mmc: cqhci: Add cqhci_deactivate() (diff) | |
| download | linux-5cf583f1fb9c5ca8862c8a1c688874dc85e594f5.tar.xz linux-5cf583f1fb9c5ca8862c8a1c688874dc85e594f5.zip | |
mmc: sdhci-msm: Deactivate CQE during SDHC reset
When SDHC gets reset (E.g. in runtime suspend path), CQE also gets
reset and goes to disable state. But s/w state still points it as CQE
is in enabled state. Since s/w and h/w states goes out of sync,
it results in s/w request timeout for subsequent CQE requests.
To synchronize CQE s/w and h/w state during SDHC reset,
explicitly deactivate CQE just before SDHC reset.
Signed-off-by: Veerabhadrarao Badiganti <vbadigan@codeaurora.org>
Acked-by: Adrian Hunter <adrian.hunter@intel.com>
Link: https://lore.kernel.org/r/1583503724-13943-3-git-send-email-vbadigan@codeaurora.org
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Diffstat (limited to 'drivers/mmc/host/sdhci-msm.c')
| -rw-r--r-- | drivers/mmc/host/sdhci-msm.c | 9 |
1 files changed, 8 insertions, 1 deletions
diff --git a/drivers/mmc/host/sdhci-msm.c b/drivers/mmc/host/sdhci-msm.c index 53b79ee37fdd..09ff7315eb5e 100644 --- a/drivers/mmc/host/sdhci-msm.c +++ b/drivers/mmc/host/sdhci-msm.c @@ -1823,6 +1823,13 @@ static void sdhci_msm_set_regulator_caps(struct sdhci_msm_host *msm_host) pr_debug("%s: supported caps: 0x%08x\n", mmc_hostname(mmc), caps); } +static void sdhci_msm_reset(struct sdhci_host *host, u8 mask) +{ + if ((host->mmc->caps2 & MMC_CAP2_CQE) && (mask & SDHCI_RESET_ALL)) + cqhci_deactivate(host->mmc); + sdhci_reset(host, mask); +} + static const struct sdhci_msm_variant_ops mci_var_ops = { .msm_readl_relaxed = sdhci_msm_mci_variant_readl_relaxed, .msm_writel_relaxed = sdhci_msm_mci_variant_writel_relaxed, @@ -1861,7 +1868,7 @@ static const struct of_device_id sdhci_msm_dt_match[] = { MODULE_DEVICE_TABLE(of, sdhci_msm_dt_match); static const struct sdhci_ops sdhci_msm_ops = { - .reset = sdhci_reset, + .reset = sdhci_msm_reset, .set_clock = sdhci_msm_set_clock, .get_min_clock = sdhci_msm_get_min_clock, .get_max_clock = sdhci_msm_get_max_clock, |