Add the "vqmmc" regulator into dw_mmc.c This patch depend on below patches. ([PATCH v4 1/7] mmc: dw_mmc: use the mmc_of_parse() instead of local parser ~) https://patchwork.kernel.org/patch/3750681/ https://patchwork.kernel.org/patch/3750691/ https://patchwork.kernel.org/patch/3750711/ https://patchwork.kernel.org/patch/3750701/ https://patchwork.kernel.org/patch/3750721/ https://patchwork.kernel.org/patch/3750731/ https://patchwork.kernel.org/patch/3750741/ Signed-off-by: Jaehoon Chung <jh80.chung@xxxxxxxxxxx> --- drivers/mmc/host/dw_mmc.c | 34 ++++++++++++++++++++++++++++++++++ include/linux/mmc/dw_mmc.h | 1 + 2 files changed, 35 insertions(+) diff --git a/drivers/mmc/host/dw_mmc.c b/drivers/mmc/host/dw_mmc.c index 5e78748..9a33a6d 100644 --- a/drivers/mmc/host/dw_mmc.c +++ b/drivers/mmc/host/dw_mmc.c @@ -2393,6 +2393,24 @@ int dw_mci_probe(struct dw_mci *host) } } + host->vqmmc = devm_regulator_get_optional(host->dev, "vqmmc"); + if (IS_ERR(host->vqmmc)) { + ret = PTR_ERR(host->vqmmc); + if (ret == -EPROBE_DEFER) + goto err_vqmmc; + + dev_info(host->dev, "no vqmmc regulator found: %d\n", ret); + host->vqmmc = NULL; + } else { + ret = regulator_enable(host->vqmmc); + if (ret) { + if (ret != -EPROBE_DEFER) + dev_err(host->dev, + "regulator_enable fail: %d\n", ret); + goto err_vqmmc; + } + } + host->quirks = host->pdata->quirks; spin_lock_init(&host->lock); @@ -2536,6 +2554,9 @@ err_workqueue: err_dmaunmap: if (host->use_dma && host->dma_ops->exit) host->dma_ops->exit(host); + if (host->vqmmc) + regulator_disable(host->vqmmc); +err_vqmmc: if (host->vmmc) regulator_disable(host->vmmc); @@ -2575,6 +2596,8 @@ void dw_mci_remove(struct dw_mci *host) if (host->vmmc) regulator_disable(host->vmmc); + if (host->vqmmc) + regulator_disable(host->vqmmc); if (!IS_ERR(host->ciu_clk)) clk_disable_unprepare(host->ciu_clk); @@ -2594,6 +2617,8 @@ int dw_mci_suspend(struct dw_mci *host) { if (host->vmmc) regulator_disable(host->vmmc); + if (host->vqmmc) + regulator_disable(host->vqmmc); return 0; } @@ -2612,6 +2637,15 @@ int dw_mci_resume(struct dw_mci *host) } } + if (host->vqmmc) { + ret = regulator_enable(host->vqmmc); + if (ret) { + dev_err(host->dev, + "failed to enable regulator: %d\n", ret); + return ret; + } + } + if (!dw_mci_ctrl_all_reset(host)) { ret = -ENODEV; return ret; diff --git a/include/linux/mmc/dw_mmc.h b/include/linux/mmc/dw_mmc.h index babaea9..8912d92 100644 --- a/include/linux/mmc/dw_mmc.h +++ b/include/linux/mmc/dw_mmc.h @@ -189,6 +189,7 @@ struct dw_mci { u32 quirks; struct regulator *vmmc; /* Power regulator */ + struct regulator *vqmmc; /* Signalling regulator */ unsigned long irq_flags; /* IRQ flags */ int irq; }; -- 1.7.9.5 -- To unsubscribe from this list: send the line "unsubscribe linux-mmc" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
