diff options
Diffstat (limited to 'drivers/usb')
| -rw-r--r-- | drivers/usb/musb/Makefile | 4 | ||||
| -rw-r--r-- | drivers/usb/musb/blackfin.c | 84 |
2 files changed, 85 insertions, 3 deletions
diff --git a/drivers/usb/musb/Makefile b/drivers/usb/musb/Makefile index d2a012917887..61f46affcf7a 100644 --- a/drivers/usb/musb/Makefile +++ b/drivers/usb/musb/Makefile @@ -13,14 +13,12 @@ musb_hdrc-$(CONFIG_USB_MUSB_HDRC_HCD) += musb_virthub.o musb_host.o musb_hdrc-$(CONFIG_DEBUG_FS) += musb_debugfs.o # Hardware Glue Layer - -musb_hdrc-$(CONFIG_USB_MUSB_BLACKFIN) += blackfin.o - obj-$(CONFIG_USB_MUSB_OMAP2PLUS) += omap2430.o obj-$(CONFIG_USB_MUSB_AM35X) += am35x.o obj-$(CONFIG_USB_MUSB_TUSB6010) += tusb6010.o obj-$(CONFIG_USB_MUSB_DAVINCI) += davinci.o obj-$(CONFIG_USB_MUSB_DA8XX) += da8xx.o +obj-$(CONFIG_USB_MUSB_BLACKFIN) += blackfin.o # the kconfig must guarantee that only one of the # possible I/O schemes will be enabled at a time ... diff --git a/drivers/usb/musb/blackfin.c b/drivers/usb/musb/blackfin.c index 9874501d6429..b0968201d849 100644 --- a/drivers/usb/musb/blackfin.c +++ b/drivers/usb/musb/blackfin.c @@ -15,6 +15,8 @@ #include <linux/list.h> #include <linux/gpio.h> #include <linux/io.h> +#include <linux/platform_device.h> +#include <linux/dma-mapping.h> #include <asm/cacheflush.h> @@ -442,3 +444,85 @@ const struct musb_platform_ops musb_ops = { .vbus_status = bfin_musb_vbus_status, .set_vbus = bfin_musb_set_vbus, }; + +static u64 bfin_dmamask = DMA_BIT_MASK(32); + +static int __init bfin_probe(struct platform_device *pdev) +{ + struct musb_hdrc_platform_data *pdata = pdev->dev.platform_data; + struct platform_device *musb; + + int ret = -ENOMEM; + + musb = platform_device_alloc("musb-hdrc", -1); + if (!musb) { + dev_err(&pdev->dev, "failed to allocate musb device\n"); + goto err0; + } + + musb->dev.parent = &pdev->dev; + musb->dev.dma_mask = &bfin_dmamask; + musb->dev.coherent_dma_mask = bfin_dmamask; + + platform_set_drvdata(pdev, musb); + + ret = platform_device_add_resources(musb, pdev->resource, + pdev->num_resources); + if (ret) { + dev_err(&pdev->dev, "failed to add resources\n"); + goto err1; + } + + ret = platform_device_add_data(musb, pdata, sizeof(*pdata)); + if (ret) { + dev_err(&pdev->dev, "failed to add platform_data\n"); + goto err1; + } + + ret = platform_device_add(musb); + if (ret) { + dev_err(&pdev->dev, "failed to register musb device\n"); + goto err1; + } + + return 0; + +err1: + platform_device_put(musb); + +err0: + return ret; +} + +static int __exit bfin_remove(struct platform_device *pdev) +{ + struct platform_device *musb = platform_get_drvdata(pdev); + + platform_device_del(musb); + platform_device_put(musb); + + return 0; +} + +static struct platform_driver bfin_driver = { + .remove = __exit_p(bfin_remove), + .driver = { + .name = "musb-bfin", + }, +}; + +MODULE_DESCRIPTION("Blackfin MUSB Glue Layer"); +MODULE_AUTHOR("Bryan Wy <cooloney@kernel.org>"); +MODULE_LICENSE("GPL v2"); + +static int __init bfin_init(void) +{ + return platform_driver_probe(&bfin_driver, bfin_probe); +} +subsys_initcall(bfin_init); + +static void __exit bfin_exit(void) +{ + platform_driver_unregister(&bfin_driver); +} +module_exit(bfin_exit); |