diff options
Diffstat (limited to 'drivers/mmc/host/sdhci-sirf.c')
| -rw-r--r-- | drivers/mmc/host/sdhci-sirf.c | 26 |
1 files changed, 24 insertions, 2 deletions
diff --git a/drivers/mmc/host/sdhci-sirf.c b/drivers/mmc/host/sdhci-sirf.c index 17004531d089..dd29d47c07aa 100644 --- a/drivers/mmc/host/sdhci-sirf.c +++ b/drivers/mmc/host/sdhci-sirf.c @@ -15,6 +15,8 @@ #include <linux/mmc/slot-gpio.h> #include "sdhci-pltfm.h" +#define SDHCI_SIRF_8BITBUS BIT(3) + struct sdhci_sirf_priv { struct clk *clk; int gpio_cd; @@ -27,10 +29,30 @@ static unsigned int sdhci_sirf_get_max_clk(struct sdhci_host *host) return clk_get_rate(priv->clk); } +static void sdhci_sirf_set_bus_width(struct sdhci_host *host, int width) +{ + u8 ctrl; + + ctrl = sdhci_readb(host, SDHCI_HOST_CONTROL); + ctrl &= ~(SDHCI_CTRL_4BITBUS | SDHCI_SIRF_8BITBUS); + + /* + * CSR atlas7 and prima2 SD host version is not 3.0 + * 8bit-width enable bit of CSR SD hosts is 3, + * while stardard hosts use bit 5 + */ + if (width == MMC_BUS_WIDTH_8) + ctrl |= SDHCI_SIRF_8BITBUS; + else if (width == MMC_BUS_WIDTH_4) + ctrl |= SDHCI_CTRL_4BITBUS; + + sdhci_writeb(host, ctrl, SDHCI_HOST_CONTROL); +} + static struct sdhci_ops sdhci_sirf_ops = { .set_clock = sdhci_set_clock, .get_max_clock = sdhci_sirf_get_max_clk, - .set_bus_width = sdhci_set_bus_width, + .set_bus_width = sdhci_sirf_set_bus_width, .reset = sdhci_reset, .set_uhs_signaling = sdhci_set_uhs_signaling, }; @@ -94,6 +116,7 @@ static int sdhci_sirf_probe(struct platform_device *pdev) ret); goto err_request_cd; } + mmc_gpiod_request_cd_irq(host->mmc); } return 0; @@ -167,7 +190,6 @@ MODULE_DEVICE_TABLE(of, sdhci_sirf_of_match); static struct platform_driver sdhci_sirf_driver = { .driver = { .name = "sdhci-sirf", - .owner = THIS_MODULE, .of_match_table = sdhci_sirf_of_match, #ifdef CONFIG_PM_SLEEP .pm = &sdhci_sirf_pm_ops, |