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author | Linus Torvalds <torvalds@linux-foundation.org> | 2017-09-07 12:24:50 -0700 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2017-09-07 12:24:50 -0700 |
commit | 15d8ffc96464f6571ecf22043c45fad659f11bdd (patch) | |
tree | 7060f5557f370532478f6a652efff7473acbb856 /drivers/mmc/host/sdhci-st.c | |
parent | Merge branch 'for-4.14/block' of git://git.kernel.dk/linux-block (diff) | |
parent | mmc: renesas_sdhi: Add r8a7743/5 support (diff) | |
download | linux-dev-15d8ffc96464f6571ecf22043c45fad659f11bdd.tar.xz linux-dev-15d8ffc96464f6571ecf22043c45fad659f11bdd.zip |
Merge tag 'mmc-v4.14' of git://git.kernel.org/pub/scm/linux/kernel/git/ulfh/mmc
Pull MMC updates from Ulf Hansson:
"MMC core:
- Continue to refactor the mmc block code to prepare for blkmq
- Move mmc block debugfs into block module
- Next step for eMMC CMDQ by adding a new mmc host interface for it
- Move Kconfig option MMC_DEBUG from core to host
- Some additional minor improvements
MMC host:
- Declare structs as const when applicable
- Explicitly request exclusive reset control when applicable
- Improve some error paths and other various cleanups
- sdhci: Preparations to support SDHCI OMAP
- sdhci: Improve some PM related code
- sdhci: Re-factoring and modernizations
- sdhci-xenon: Add runtime PM and system sleep support
- sdhci-xenon: Add support for eMMC HS400 Enhanced Strobe
- sdhci-cadence: Add system sleep support
- sdhci-of-at91: Improve system sleep support
- dw_mmc: Add support for Hisilicon hi3660
- sunxi: Add support for A83T eMMC
- sunxi: Add support for DDR52 mode
- meson-gx: Add support for UHS-I SD-cards
- meson-gx: Cleanups and improvements
- tmio: Fix CMD12 (STOP) handling
- tmio: Cleanups and improvements
- renesas_sdhi: Add r8a7743/5 support
- renesas-sdhi: Add support for R-Car Gen3 SDHI DMAC
- renesas_sdhi: Cleanups and improvements"
* tag 'mmc-v4.14' of git://git.kernel.org/pub/scm/linux/kernel/git/ulfh/mmc: (145 commits)
mmc: renesas_sdhi: Add r8a7743/5 support
mmc: meson-gx: fix __ffsdi2 undefined on arm32
mmc: sdhci-xenon: add runtime pm support and reimplement standby
mmc: core: Move mmc_start_areq() declaration
mmc: mmci: stop building qcom dml as module
mmc: sunxi: Reset the device at probe time
clk: sunxi-ng: Provide a default reset hook
mmc: meson-gx: rework tuning function
mmc: meson-gx: change default tx phase
mmc: meson-gx: implement voltage switch callback
mmc: meson-gx: use CCF to handle the clock phases
mmc: meson-gx: implement card_busy callback
mmc: meson-gx: simplify interrupt handler
mmc: meson-gx: work around clk-stop issue
mmc: meson-gx: fix dual data rate mode frequencies
mmc: meson-gx: rework clock init function
mmc: meson-gx: rework clk_set function
mmc: meson-gx: rework set_ios function
mmc: meson-gx: cfg init overwrite values
mmc: meson-gx: initialize sane clk default before clock register
...
Diffstat (limited to 'drivers/mmc/host/sdhci-st.c')
-rw-r--r-- | drivers/mmc/host/sdhci-st.c | 28 |
1 files changed, 23 insertions, 5 deletions
diff --git a/drivers/mmc/host/sdhci-st.c b/drivers/mmc/host/sdhci-st.c index 68c36c9fa231..c32daed0d418 100644 --- a/drivers/mmc/host/sdhci-st.c +++ b/drivers/mmc/host/sdhci-st.c @@ -371,7 +371,7 @@ static int sdhci_st_probe(struct platform_device *pdev) if (IS_ERR(icnclk)) icnclk = NULL; - rstc = devm_reset_control_get(&pdev->dev, NULL); + rstc = devm_reset_control_get_exclusive(&pdev->dev, NULL); if (IS_ERR(rstc)) rstc = NULL; else @@ -394,8 +394,17 @@ static int sdhci_st_probe(struct platform_device *pdev) goto err_of; } - clk_prepare_enable(clk); - clk_prepare_enable(icnclk); + ret = clk_prepare_enable(clk); + if (ret) { + dev_err(&pdev->dev, "Failed to prepare clock\n"); + goto err_of; + } + + ret = clk_prepare_enable(icnclk); + if (ret) { + dev_err(&pdev->dev, "Failed to prepare icn clock\n"); + goto err_icnclk; + } /* Configure the FlashSS Top registers for setting eMMC TX/RX delay */ res = platform_get_resource_byname(pdev, IORESOURCE_MEM, @@ -429,6 +438,7 @@ static int sdhci_st_probe(struct platform_device *pdev) err_out: clk_disable_unprepare(icnclk); +err_icnclk: clk_disable_unprepare(clk); err_of: sdhci_pltfm_free(pdev); @@ -487,9 +497,17 @@ static int sdhci_st_resume(struct device *dev) struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host); struct st_mmc_platform_data *pdata = sdhci_pltfm_priv(pltfm_host); struct device_node *np = dev->of_node; + int ret; + + ret = clk_prepare_enable(pltfm_host->clk); + if (ret) + return ret; - clk_prepare_enable(pltfm_host->clk); - clk_prepare_enable(pdata->icnclk); + ret = clk_prepare_enable(pdata->icnclk); + if (ret) { + clk_disable_unprepare(pltfm_host->clk); + return ret; + } if (pdata->rstc) reset_control_deassert(pdata->rstc); |