diff options
Diffstat (limited to 'drivers/usb/musb/ux500.c')
| -rw-r--r-- | drivers/usb/musb/ux500.c | 94 |
1 files changed, 79 insertions, 15 deletions
diff --git a/drivers/usb/musb/ux500.c b/drivers/usb/musb/ux500.c index 2c80004e0a8..f202e508846 100644 --- a/drivers/usb/musb/ux500.c +++ b/drivers/usb/musb/ux500.c @@ -21,15 +21,22 @@ #include <linux/module.h> #include <linux/kernel.h> -#include <linux/init.h> #include <linux/clk.h> #include <linux/err.h> #include <linux/io.h> +#include <linux/of.h> #include <linux/platform_device.h> #include <linux/usb/musb-ux500.h> #include "musb_core.h" +static struct musb_hdrc_config ux500_musb_hdrc_config = { + .multipoint = true, + .dyn_fifo = true, + .num_eps = 16, + .ram_bits = 16, +}; + struct ux500_glue { struct device *dev; struct platform_device *musb; @@ -187,14 +194,58 @@ static const struct musb_platform_ops ux500_ops = { .set_vbus = ux500_musb_set_vbus, }; +static struct musb_hdrc_platform_data * +ux500_of_probe(struct platform_device *pdev, struct device_node *np) +{ + struct musb_hdrc_platform_data *pdata; + const char *mode; + int strlen; + + pdata = devm_kzalloc(&pdev->dev, sizeof(*pdata), GFP_KERNEL); + if (!pdata) + return NULL; + + mode = of_get_property(np, "dr_mode", &strlen); + if (!mode) { + dev_err(&pdev->dev, "No 'dr_mode' property found\n"); + return NULL; + } + + if (strlen > 0) { + if (!strcmp(mode, "host")) + pdata->mode = MUSB_HOST; + if (!strcmp(mode, "otg")) + pdata->mode = MUSB_OTG; + if (!strcmp(mode, "peripheral")) + pdata->mode = MUSB_PERIPHERAL; + } + + return pdata; +} + static int ux500_probe(struct platform_device *pdev) { - struct musb_hdrc_platform_data *pdata = pdev->dev.platform_data; + struct resource musb_resources[2]; + struct musb_hdrc_platform_data *pdata = dev_get_platdata(&pdev->dev); + struct device_node *np = pdev->dev.of_node; struct platform_device *musb; struct ux500_glue *glue; struct clk *clk; int ret = -ENOMEM; + if (!pdata) { + if (np) { + pdata = ux500_of_probe(pdev, np); + if (!pdata) + goto err0; + + pdev->dev.platform_data = pdata; + } else { + dev_err(&pdev->dev, "no pdata or device tree found\n"); + goto err0; + } + } + glue = kzalloc(sizeof(*glue), GFP_KERNEL); if (!glue) { dev_err(&pdev->dev, "failed to allocate glue context\n"); @@ -207,7 +258,7 @@ static int ux500_probe(struct platform_device *pdev) goto err1; } - clk = clk_get(&pdev->dev, "usb"); + clk = clk_get(&pdev->dev, NULL); if (IS_ERR(clk)) { dev_err(&pdev->dev, "failed to get clock\n"); ret = PTR_ERR(clk); @@ -221,7 +272,7 @@ static int ux500_probe(struct platform_device *pdev) } musb->dev.parent = &pdev->dev; - musb->dev.dma_mask = pdev->dev.dma_mask; + musb->dev.dma_mask = &pdev->dev.coherent_dma_mask; musb->dev.coherent_dma_mask = pdev->dev.coherent_dma_mask; glue->dev = &pdev->dev; @@ -229,11 +280,25 @@ static int ux500_probe(struct platform_device *pdev) glue->clk = clk; pdata->platform_ops = &ux500_ops; + pdata->config = &ux500_musb_hdrc_config; platform_set_drvdata(pdev, glue); - ret = platform_device_add_resources(musb, pdev->resource, - pdev->num_resources); + memset(musb_resources, 0x00, sizeof(*musb_resources) * + ARRAY_SIZE(musb_resources)); + + musb_resources[0].name = pdev->resource[0].name; + musb_resources[0].start = pdev->resource[0].start; + musb_resources[0].end = pdev->resource[0].end; + musb_resources[0].flags = pdev->resource[0].flags; + + musb_resources[1].name = pdev->resource[1].name; + musb_resources[1].start = pdev->resource[1].start; + musb_resources[1].end = pdev->resource[1].end; + musb_resources[1].flags = pdev->resource[1].flags; + + ret = platform_device_add_resources(musb, musb_resources, + ARRAY_SIZE(musb_resources)); if (ret) { dev_err(&pdev->dev, "failed to add resources\n"); goto err5; @@ -309,23 +374,22 @@ static int ux500_resume(struct device *dev) return 0; } +#endif -static const struct dev_pm_ops ux500_pm_ops = { - .suspend = ux500_suspend, - .resume = ux500_resume, -}; +static SIMPLE_DEV_PM_OPS(ux500_pm_ops, ux500_suspend, ux500_resume); -#define DEV_PM_OPS (&ux500_pm_ops) -#else -#define DEV_PM_OPS NULL -#endif +static const struct of_device_id ux500_match[] = { + { .compatible = "stericsson,db8500-musb", }, + {} +}; static struct platform_driver ux500_driver = { .probe = ux500_probe, .remove = ux500_remove, .driver = { .name = "musb-ux500", - .pm = DEV_PM_OPS, + .pm = &ux500_pm_ops, + .of_match_table = ux500_match, }, }; |