diff options
Diffstat (limited to 'drivers/mmc/host/sdhci-pxav3.c')
| -rw-r--r-- | drivers/mmc/host/sdhci-pxav3.c | 52 |
1 files changed, 52 insertions, 0 deletions
diff --git a/drivers/mmc/host/sdhci-pxav3.c b/drivers/mmc/host/sdhci-pxav3.c index f29695683556..07fe3834fe0b 100644 --- a/drivers/mmc/host/sdhci-pxav3.c +++ b/drivers/mmc/host/sdhci-pxav3.c @@ -28,6 +28,9 @@ #include <linux/slab.h> #include <linux/delay.h> #include <linux/module.h> +#include <linux/of.h> +#include <linux/of_device.h> + #include "sdhci.h" #include "sdhci-pltfm.h" @@ -164,6 +167,46 @@ static struct sdhci_ops pxav3_sdhci_ops = { .platform_send_init_74_clocks = pxav3_gen_init_74_clocks, }; +#ifdef CONFIG_OF +static const struct of_device_id sdhci_pxav3_of_match[] = { + { + .compatible = "mrvl,pxav3-mmc", + }, + {}, +}; +MODULE_DEVICE_TABLE(of, sdhci_pxav3_of_match); + +static struct sdhci_pxa_platdata *pxav3_get_mmc_pdata(struct device *dev) +{ + struct sdhci_pxa_platdata *pdata; + struct device_node *np = dev->of_node; + u32 bus_width; + u32 clk_delay_cycles; + + pdata = devm_kzalloc(dev, sizeof(*pdata), GFP_KERNEL); + if (!pdata) + return NULL; + + if (of_find_property(np, "non-removable", NULL)) + pdata->flags |= PXA_FLAG_CARD_PERMANENT; + + of_property_read_u32(np, "bus-width", &bus_width); + if (bus_width == 8) + pdata->flags |= PXA_FLAG_SD_8_BIT_CAPABLE_SLOT; + + of_property_read_u32(np, "mrvl,clk-delay-cycles", &clk_delay_cycles); + if (clk_delay_cycles > 0) + pdata->clk_delay_cycles = clk_delay_cycles; + + return pdata; +} +#else +static inline struct sdhci_pxa_platdata *pxav3_get_mmc_pdata(struct device *dev) +{ + return NULL; +} +#endif + static int __devinit sdhci_pxav3_probe(struct platform_device *pdev) { struct sdhci_pltfm_host *pltfm_host; @@ -171,6 +214,8 @@ static int __devinit sdhci_pxav3_probe(struct platform_device *pdev) struct device *dev = &pdev->dev; struct sdhci_host *host = NULL; struct sdhci_pxa *pxa = NULL; + const struct of_device_id *match; + int ret; struct clk *clk; @@ -202,6 +247,10 @@ static int __devinit sdhci_pxav3_probe(struct platform_device *pdev) /* enable 1/8V DDR capable */ host->mmc->caps |= MMC_CAP_1_8V_DDR; + match = of_match_device(of_match_ptr(sdhci_pxav3_of_match), &pdev->dev); + if (match) + pdata = pxav3_get_mmc_pdata(dev); + if (pdata) { if (pdata->flags & PXA_FLAG_CARD_PERMANENT) { /* on-chip device */ @@ -263,6 +312,9 @@ static int __devexit sdhci_pxav3_remove(struct platform_device *pdev) static struct platform_driver sdhci_pxav3_driver = { .driver = { .name = "sdhci-pxav3", +#ifdef CONFIG_OF + .of_match_table = sdhci_pxav3_of_match, +#endif .owner = THIS_MODULE, .pm = SDHCI_PLTFM_PMOPS, }, |