diff options
author | Felipe Balbi <balbi@ti.com> | 2010-12-02 08:21:05 +0100 |
---|---|---|
committer | Felipe Balbi <balbi@ti.com> | 2010-12-10 09:21:16 +0100 |
commit | 9cb0308eec7a965136fe9fc6d1be3548c01a4a1e (patch) | |
tree | 7aa08956e8396c0e4fa77c94d0af62bbca5cf022 /drivers/usb/musb/blackfin.c | |
parent | usb: musb: split da8xx to its own platform_driver (diff) | |
download | linux-9cb0308eec7a965136fe9fc6d1be3548c01a4a1e.tar.xz linux-9cb0308eec7a965136fe9fc6d1be3548c01a4a1e.zip |
usb: musb: split blackfin to its own platform_driver
Just adding its own platform_driver, not really
using it yet.
Later patches will come to split power management
code from musb_core and move it completely to HW
glue layer.
Signed-off-by: Felipe Balbi <balbi@ti.com>
Diffstat (limited to 'drivers/usb/musb/blackfin.c')
-rw-r--r-- | drivers/usb/musb/blackfin.c | 84 |
1 files changed, 84 insertions, 0 deletions
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); |