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author | Linus Torvalds <torvalds@linux-foundation.org> | 2020-08-05 13:23:24 -0700 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2020-08-05 13:23:24 -0700 |
commit | 8f7be6291529011a58856bf178f52ed5751c68ac (patch) | |
tree | ab0e58a5ff58e6c713e7abfa97c815be1bcc44e4 /drivers/mmc/host/sdhci.c | |
parent | 9aebd3254c184fb6c731548b8347193bf882b6f7 (diff) | |
parent | 7f4bc2e8687ecea52177aac30fb153cc076f7022 (diff) | |
download | linux-8f7be6291529011a58856bf178f52ed5751c68ac.tar.gz linux-8f7be6291529011a58856bf178f52ed5751c68ac.tar.bz2 linux-8f7be6291529011a58856bf178f52ed5751c68ac.zip |
Merge tag 'mmc-v5.9' of git://git.kernel.org/pub/scm/linux/kernel/git/ulfh/mmc
Pull MMC updates from Ulf Hansson:
"MMC core:
- Add a new host cap bit and a corresponding DT property, to support
power cycling of the card by FW at system suspend/resume.
- Fix clock rate setting for SDIO in SDR12/SDR25 speed-mode
- Fix switch to 1/4-bit mode at system suspend/resume for SD-combo
cards
- Convert the mmc-pwrseq DT bindings to the json-schema
- Always allow the card detect uevent to be consumed by userspace
MMC host controllers:
- Convert a few DT bindings to the json-schema
- mtk-sd:
- Add support for command queue through cqhci
- Add support for the MT6779 variant
- renesas_sdhi_internal_dmac:
- Fix dma unmapping in the error path
- sdhci_am654:
- Add support for the AM65x PG2.0 variant
- Extend support for phys/clocks
- sdhci-cadence:
- Drop incorrect HW tuning for SD mode
- sdhci-msm:
- Add support for interconnect bandwidth scaling
- Enable internal voltage control
- Enable low power state for pinctrls
- sdhci-of-at91:
- Ludovic Desroches handovers maintenance to Eugen Hristev
- sdhci-pci-gli:
- Improve clock handling for GL975x
- sdhci-pci-o2micro:
- Add HW tuning for SDR104 mode
- Fix support for O2 host controller Seabird1"
* tag 'mmc-v5.9' of git://git.kernel.org/pub/scm/linux/kernel/git/ulfh/mmc: (66 commits)
mmc: mediatek: make function msdc_cqe_disable() static
MAINTAINERS: mmc: sdhci-of-at91: handover maintenance to Eugen Hristev
dt-bindings: mmc: mediatek: Add document for mt6779
mmc: mediatek: command queue support
mmc: mediatek: refine msdc timeout api
mmc: mediatek: add MT6779 MMC driver support
mmc: sdhci-pci-o2micro: Add HW tuning for SDR104 mode
mmc: sdhci-pci-o2micro: Bug fix for O2 host controller Seabird1
mmc: via-sdmmc: use generic power management
memstick: jmb38x_ms: use generic power management
mmc: sdhci-cadence: do not use hardware tuning for SD mode
mmc: sdhci-pci-gli: Set SDR104's clock to 205MHz and enable SSC for GL975x
mmc: cqhci: Fix a print format for the task descriptor
mmc: sdhci-of-arasan: fix timings allocation code
mmc: sdhci: Fix a potential uninitialized variable
dt-bindings: mmc: renesas,sdhi: convert to YAML
dt-bindings: mmc: convert arasan sdhci bindings to yaml
mmc: sdhci: Fix potential null pointer access while accessing vqmmc
mmc: core: Add MMC_CAP2_FULL_PWR_CYCLE_IN_SUSPEND
dt-bindings: mmc: Add full-pwr-cycle-in-suspend property
...
Diffstat (limited to 'drivers/mmc/host/sdhci.c')
-rw-r--r-- | drivers/mmc/host/sdhci.c | 24 |
1 files changed, 16 insertions, 8 deletions
diff --git a/drivers/mmc/host/sdhci.c b/drivers/mmc/host/sdhci.c index 1ee866a38794..3ad394b40eb1 100644 --- a/drivers/mmc/host/sdhci.c +++ b/drivers/mmc/host/sdhci.c @@ -4104,7 +4104,8 @@ int sdhci_setup_host(struct sdhci_host *host) unsigned int ocr_avail; unsigned int override_timeout_clk; u32 max_clk; - int ret; + int ret = 0; + bool enable_vqmmc = false; WARN_ON(host == NULL); if (host == NULL) @@ -4118,9 +4119,12 @@ int sdhci_setup_host(struct sdhci_host *host) * the host can take the appropriate action if regulators are not * available. */ - ret = mmc_regulator_get_supply(mmc); - if (ret) - return ret; + if (!mmc->supply.vqmmc) { + ret = mmc_regulator_get_supply(mmc); + if (ret) + return ret; + enable_vqmmc = true; + } DBG("Version: 0x%08x | Present: 0x%08x\n", sdhci_readw(host, SDHCI_HOST_VERSION), @@ -4377,7 +4381,10 @@ int sdhci_setup_host(struct sdhci_host *host) mmc->caps |= MMC_CAP_NEEDS_POLL; if (!IS_ERR(mmc->supply.vqmmc)) { - ret = regulator_enable(mmc->supply.vqmmc); + if (enable_vqmmc) { + ret = regulator_enable(mmc->supply.vqmmc); + host->sdhci_core_to_disable_vqmmc = !ret; + } /* If vqmmc provides no 1.8V signalling, then there's no UHS */ if (!regulator_is_supported_voltage(mmc->supply.vqmmc, 1700000, @@ -4396,6 +4403,7 @@ int sdhci_setup_host(struct sdhci_host *host) mmc_hostname(mmc), ret); mmc->supply.vqmmc = ERR_PTR(-EINVAL); } + } if (host->quirks2 & SDHCI_QUIRK2_NO_1_8_V) { @@ -4626,7 +4634,7 @@ int sdhci_setup_host(struct sdhci_host *host) return 0; unreg: - if (!IS_ERR(mmc->supply.vqmmc)) + if (host->sdhci_core_to_disable_vqmmc) regulator_disable(mmc->supply.vqmmc); undma: if (host->align_buffer) @@ -4644,7 +4652,7 @@ void sdhci_cleanup_host(struct sdhci_host *host) { struct mmc_host *mmc = host->mmc; - if (!IS_ERR(mmc->supply.vqmmc)) + if (host->sdhci_core_to_disable_vqmmc) regulator_disable(mmc->supply.vqmmc); if (host->align_buffer) @@ -4787,7 +4795,7 @@ void sdhci_remove_host(struct sdhci_host *host, int dead) destroy_workqueue(host->complete_wq); - if (!IS_ERR(mmc->supply.vqmmc)) + if (host->sdhci_core_to_disable_vqmmc) regulator_disable(mmc->supply.vqmmc); if (host->align_buffer) |