From 7c7ba4334e5cfedb5b93ffee216b67dfa9f4135d Mon Sep 17 00:00:00 2001 From: Srinath Mannam Date: Sun, 5 Aug 2018 13:22:52 +0530 Subject: [PATCH] mmc: sdhci-iproc: Add ACPI support Add ACPI support to all IPROC SDHCI variants. Signed-off-by: Srinath Mannam Reviewed-by: Ray Jui Reviewed-by: Scott Branden Reviewed-by: Vladimir Olovyannikov Acked-by: Adrian Hunter Signed-off-by: Ulf Hansson --- drivers/mmc/host/Kconfig | 1 + drivers/mmc/host/sdhci-iproc.c | 59 +++++++++++++++++++++++----------- 2 files changed, 41 insertions(+), 19 deletions(-) diff --git a/drivers/mmc/host/Kconfig b/drivers/mmc/host/Kconfig index 694d0828215d..5c17b75409f6 100644 --- a/drivers/mmc/host/Kconfig +++ b/drivers/mmc/host/Kconfig @@ -345,6 +345,7 @@ config MMC_SDHCI_IPROC tristate "SDHCI support for the BCM2835 & iProc SD/MMC Controller" depends on ARCH_BCM2835 || ARCH_BCM_IPROC || COMPILE_TEST depends on MMC_SDHCI_PLTFM + depends on OF || ACPI default ARCH_BCM_IPROC select MMC_SDHCI_IO_ACCESSORS help diff --git a/drivers/mmc/host/sdhci-iproc.c b/drivers/mmc/host/sdhci-iproc.c index d0e83db42ae5..0db99057c44f 100644 --- a/drivers/mmc/host/sdhci-iproc.c +++ b/drivers/mmc/host/sdhci-iproc.c @@ -15,6 +15,7 @@ * iProc SDHCI platform driver */ +#include #include #include #include @@ -162,9 +163,19 @@ static void sdhci_iproc_writeb(struct sdhci_host *host, u8 val, int reg) sdhci_iproc_writel(host, newval, reg & ~3); } +static unsigned int sdhci_iproc_get_max_clock(struct sdhci_host *host) +{ + struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host); + + if (pltfm_host->clk) + return sdhci_pltfm_clk_get_max_clock(host); + else + return pltfm_host->clock; +} + static const struct sdhci_ops sdhci_iproc_ops = { .set_clock = sdhci_set_clock, - .get_max_clock = sdhci_pltfm_clk_get_max_clock, + .get_max_clock = sdhci_iproc_get_max_clock, .set_bus_width = sdhci_set_bus_width, .reset = sdhci_reset, .set_uhs_signaling = sdhci_set_uhs_signaling, @@ -178,7 +189,7 @@ static const struct sdhci_ops sdhci_iproc_32only_ops = { .write_w = sdhci_iproc_writew, .write_b = sdhci_iproc_writeb, .set_clock = sdhci_set_clock, - .get_max_clock = sdhci_pltfm_clk_get_max_clock, + .get_max_clock = sdhci_iproc_get_max_clock, .set_bus_width = sdhci_set_bus_width, .reset = sdhci_reset, .set_uhs_signaling = sdhci_set_uhs_signaling, @@ -256,19 +267,25 @@ static const struct of_device_id sdhci_iproc_of_match[] = { }; MODULE_DEVICE_TABLE(of, sdhci_iproc_of_match); +static const struct acpi_device_id sdhci_iproc_acpi_ids[] = { + { .id = "BRCM5871", .driver_data = (kernel_ulong_t)&iproc_cygnus_data }, + { .id = "BRCM5872", .driver_data = (kernel_ulong_t)&iproc_data }, + { /* sentinel */ } +}; +MODULE_DEVICE_TABLE(acpi, sdhci_iproc_acpi_ids); + static int sdhci_iproc_probe(struct platform_device *pdev) { - const struct of_device_id *match; - const struct sdhci_iproc_data *iproc_data; + struct device *dev = &pdev->dev; + const struct sdhci_iproc_data *iproc_data = NULL; struct sdhci_host *host; struct sdhci_iproc_host *iproc_host; struct sdhci_pltfm_host *pltfm_host; int ret; - match = of_match_device(sdhci_iproc_of_match, &pdev->dev); - if (!match) - return -EINVAL; - iproc_data = match->data; + iproc_data = device_get_match_data(dev); + if (!iproc_data) + return -ENODEV; host = sdhci_pltfm_init(pdev, iproc_data->pdata, sizeof(*iproc_host)); if (IS_ERR(host)) @@ -280,19 +297,21 @@ static int sdhci_iproc_probe(struct platform_device *pdev) iproc_host->data = iproc_data; mmc_of_parse(host->mmc); - sdhci_get_of_property(pdev); + sdhci_get_property(pdev); host->mmc->caps |= iproc_host->data->mmc_caps; - pltfm_host->clk = devm_clk_get(&pdev->dev, NULL); - if (IS_ERR(pltfm_host->clk)) { - ret = PTR_ERR(pltfm_host->clk); - goto err; - } - ret = clk_prepare_enable(pltfm_host->clk); - if (ret) { - dev_err(&pdev->dev, "failed to enable host clk\n"); - goto err; + if (dev->of_node) { + pltfm_host->clk = devm_clk_get(dev, NULL); + if (IS_ERR(pltfm_host->clk)) { + ret = PTR_ERR(pltfm_host->clk); + goto err; + } + ret = clk_prepare_enable(pltfm_host->clk); + if (ret) { + dev_err(dev, "failed to enable host clk\n"); + goto err; + } } if (iproc_host->data->pdata->quirks & SDHCI_QUIRK_MISSING_CAPS) { @@ -307,7 +326,8 @@ static int sdhci_iproc_probe(struct platform_device *pdev) return 0; err_clk: - clk_disable_unprepare(pltfm_host->clk); + if (dev->of_node) + clk_disable_unprepare(pltfm_host->clk); err: sdhci_pltfm_free(pdev); return ret; @@ -317,6 +337,7 @@ static struct platform_driver sdhci_iproc_driver = { .driver = { .name = "sdhci-iproc", .of_match_table = sdhci_iproc_of_match, + .acpi_match_table = ACPI_PTR(sdhci_iproc_acpi_ids), .pm = &sdhci_pltfm_pmops, }, .probe = sdhci_iproc_probe, -- 2.39.5