diff options
Diffstat (limited to 'drivers/mmc/host')
-rw-r--r-- | drivers/mmc/host/dw_mmc.c | 20 | ||||
-rw-r--r-- | drivers/mmc/host/s3cmci.c | 1 | ||||
-rw-r--r-- | drivers/mmc/host/sdhci-of-at91.c | 35 |
3 files changed, 45 insertions, 11 deletions
diff --git a/drivers/mmc/host/dw_mmc.c b/drivers/mmc/host/dw_mmc.c index df478ae..f81f417 100644 --- a/drivers/mmc/host/dw_mmc.c +++ b/drivers/mmc/host/dw_mmc.c @@ -2610,8 +2610,8 @@ static int dw_mci_init_slot(struct dw_mci *host, unsigned int id) host->slot[id] = slot; mmc->ops = &dw_mci_ops; - if (of_property_read_u32_array(host->dev->of_node, - "clock-freq-min-max", freq, 2)) { + if (device_property_read_u32_array(host->dev, "clock-freq-min-max", + freq, 2)) { mmc->f_min = DW_MCI_FREQ_MIN; mmc->f_max = DW_MCI_FREQ_MAX; } else { @@ -2709,7 +2709,6 @@ static void dw_mci_init_dma(struct dw_mci *host) { int addr_config; struct device *dev = host->dev; - struct device_node *np = dev->of_node; /* * Check tansfer mode from HCON[17:16] @@ -2770,8 +2769,9 @@ static void dw_mci_init_dma(struct dw_mci *host) dev_info(host->dev, "Using internal DMA controller.\n"); } else { /* TRANS_MODE_EDMAC: check dma bindings again */ - if ((of_property_count_strings(np, "dma-names") < 0) || - (!of_find_property(np, "dmas", NULL))) { + if ((device_property_read_string_array(dev, "dma-names", + NULL, 0) < 0) || + !device_property_present(dev, "dmas")) { goto no_dma; } host->dma_ops = &dw_mci_edmac_ops; @@ -2931,7 +2931,6 @@ static struct dw_mci_board *dw_mci_parse_dt(struct dw_mci *host) { struct dw_mci_board *pdata; struct device *dev = host->dev; - struct device_node *np = dev->of_node; const struct dw_mci_drv_data *drv_data = host->drv_data; int ret; u32 clock_frequency; @@ -2948,15 +2947,16 @@ static struct dw_mci_board *dw_mci_parse_dt(struct dw_mci *host) } /* find out number of slots supported */ - of_property_read_u32(np, "num-slots", &pdata->num_slots); + device_property_read_u32(dev, "num-slots", &pdata->num_slots); - if (of_property_read_u32(np, "fifo-depth", &pdata->fifo_depth)) + if (device_property_read_u32(dev, "fifo-depth", &pdata->fifo_depth)) dev_info(dev, "fifo-depth property not found, using value of FIFOTH register as default\n"); - of_property_read_u32(np, "card-detect-delay", &pdata->detect_delay_ms); + device_property_read_u32(dev, "card-detect-delay", + &pdata->detect_delay_ms); - if (!of_property_read_u32(np, "clock-frequency", &clock_frequency)) + if (!device_property_read_u32(dev, "clock-frequency", &clock_frequency)) pdata->bus_hz = clock_frequency; if (drv_data && drv_data->parse_dt) { diff --git a/drivers/mmc/host/s3cmci.c b/drivers/mmc/host/s3cmci.c index c531dee..8f27fe3 100644 --- a/drivers/mmc/host/s3cmci.c +++ b/drivers/mmc/host/s3cmci.c @@ -21,6 +21,7 @@ #include <linux/debugfs.h> #include <linux/seq_file.h> #include <linux/gpio.h> +#include <linux/interrupt.h> #include <linux/irq.h> #include <linux/io.h> diff --git a/drivers/mmc/host/sdhci-of-at91.c b/drivers/mmc/host/sdhci-of-at91.c index a8b430f..83b84ff 100644 --- a/drivers/mmc/host/sdhci-of-at91.c +++ b/drivers/mmc/host/sdhci-of-at91.c @@ -31,6 +31,7 @@ #define SDMMC_MC1R 0x204 #define SDMMC_MC1R_DDR BIT(3) +#define SDMMC_MC1R_FCD BIT(7) #define SDMMC_CACR 0x230 #define SDMMC_CACR_CAPWREN BIT(0) #define SDMMC_CACR_KEY (0x46 << 8) @@ -43,6 +44,15 @@ struct sdhci_at91_priv { struct clk *mainck; }; +static void sdhci_at91_set_force_card_detect(struct sdhci_host *host) +{ + u8 mc1r; + + mc1r = readb(host->ioaddr + SDMMC_MC1R); + mc1r |= SDMMC_MC1R_FCD; + writeb(mc1r, host->ioaddr + SDMMC_MC1R); +} + static void sdhci_at91_set_clock(struct sdhci_host *host, unsigned int clock) { u16 clk; @@ -112,10 +122,18 @@ void sdhci_at91_set_uhs_signaling(struct sdhci_host *host, unsigned int timing) sdhci_set_uhs_signaling(host, timing); } +static void sdhci_at91_reset(struct sdhci_host *host, u8 mask) +{ + sdhci_reset(host, mask); + + if (host->mmc->caps & MMC_CAP_NONREMOVABLE) + sdhci_at91_set_force_card_detect(host); +} + static const struct sdhci_ops sdhci_at91_sama5d2_ops = { .set_clock = sdhci_at91_set_clock, .set_bus_width = sdhci_set_bus_width, - .reset = sdhci_reset, + .reset = sdhci_at91_reset, .set_uhs_signaling = sdhci_at91_set_uhs_signaling, .set_power = sdhci_at91_set_power, }; @@ -322,6 +340,21 @@ static int sdhci_at91_probe(struct platform_device *pdev) host->quirks &= ~SDHCI_QUIRK_BROKEN_CARD_DETECTION; } + /* + * If the device attached to the MMC bus is not removable, it is safer + * to set the Force Card Detect bit. People often don't connect the + * card detect signal and use this pin for another purpose. If the card + * detect pin is not muxed to SDHCI controller, a default value is + * used. This value can be different from a SoC revision to another + * one. Problems come when this default value is not card present. To + * avoid this case, if the device is non removable then the card + * detection procedure using the SDMCC_CD signal is bypassed. + * This bit is reset when a software reset for all command is performed + * so we need to implement our own reset function to set back this bit. + */ + if (host->mmc->caps & MMC_CAP_NONREMOVABLE) + sdhci_at91_set_force_card_detect(host); + pm_runtime_put_autosuspend(&pdev->dev); return 0; |