From 4a5ac516ca0a820e7c006ae408872009e37e114b Mon Sep 17 00:00:00 2001 From: Liam Fraser Date: Thu, 14 Mar 2019 16:01:26 +0000 Subject: [PATCH] mmc: sdhci-of-dwcmshc: define sdio timeout clocks Signed-off-by: Liam Fraser --- drivers/mmc/host/sdhci-of-dwcmshc.c | 12 ++++++++++++ drivers/mmc/host/sdhci-pltfm.c | 8 ++++++++ drivers/mmc/host/sdhci-pltfm.h | 3 +++ 3 files changed, 23 insertions(+) --- a/drivers/mmc/host/sdhci-of-dwcmshc.c +++ b/drivers/mmc/host/sdhci-of-dwcmshc.c @@ -330,6 +330,7 @@ static const struct sdhci_ops sdhci_dwcm .set_bus_width = sdhci_set_bus_width, .set_uhs_signaling = dwcmshc_set_uhs_signaling, .get_max_clock = dwcmshc_get_max_clock, + .get_timeout_clock = sdhci_pltfm_clk_get_timeout_clock, .reset = sdhci_reset, .adma_write_desc = dwcmshc_adma_write_desc, }; @@ -500,6 +501,16 @@ static int dwcmshc_probe(struct platform clk_prepare_enable(priv->bus_clk); } + pltfm_host->timeout_clk = devm_clk_get(&pdev->dev, "timeout"); + if (IS_ERR(pltfm_host->timeout_clk)) { + err = PTR_ERR(pltfm_host->timeout_clk); + dev_err(&pdev->dev, "failed to get timeout clk: %d\n", err); + goto free_pltfm; + } + err = clk_prepare_enable(pltfm_host->timeout_clk); + if (err) + goto free_pltfm; + err = mmc_of_parse(host->mmc); if (err) goto err_clk; @@ -550,6 +561,7 @@ err_setup_host: sdhci_cleanup_host(host); err_clk: clk_disable_unprepare(pltfm_host->clk); + clk_disable_unprepare(pltfm_host->timeout_clk); clk_disable_unprepare(priv->bus_clk); if (rk_priv) clk_bulk_disable_unprepare(RK35xx_MAX_CLKS, --- a/drivers/mmc/host/sdhci-pltfm.c +++ b/drivers/mmc/host/sdhci-pltfm.c @@ -33,6 +33,14 @@ unsigned int sdhci_pltfm_clk_get_max_clo } EXPORT_SYMBOL_GPL(sdhci_pltfm_clk_get_max_clock); +unsigned int sdhci_pltfm_clk_get_timeout_clock(struct sdhci_host *host) +{ + struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host); + + return clk_get_rate(pltfm_host->timeout_clk); +} +EXPORT_SYMBOL_GPL(sdhci_pltfm_clk_get_timeout_clock); + static const struct sdhci_ops sdhci_pltfm_ops = { .set_clock = sdhci_set_clock, .set_bus_width = sdhci_set_bus_width, --- a/drivers/mmc/host/sdhci-pltfm.h +++ b/drivers/mmc/host/sdhci-pltfm.h @@ -20,6 +20,7 @@ struct sdhci_pltfm_data { struct sdhci_pltfm_host { struct clk *clk; + struct clk *timeout_clk; /* migrate from sdhci_of_host */ unsigned int clock; @@ -106,6 +107,8 @@ extern int sdhci_pltfm_unregister(struct extern unsigned int sdhci_pltfm_clk_get_max_clock(struct sdhci_host *host); +extern unsigned int sdhci_pltfm_clk_get_timeout_clock(struct sdhci_host *host); + static inline void *sdhci_pltfm_priv(struct sdhci_pltfm_host *host) { return host->private;