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usb: musb: am35x: give it a context structure

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that structure currently only holds a device
pointer to our own platform_device and musb's
platform_device, but soon it will hold pointers
to our clock structures and glue-specific bits
and pieces.

Signed-off-by: Felipe Balbi <balbi@ti.com>
This commit is contained in:
Felipe Balbi 2010-12-02 09:33:24 +02:00
parent a3cee12aa9
commit 0919dfc12a
1 changed files with 28 additions and 9 deletions
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37
drivers/usb/musb/am35x.c
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@ -82,6 +82,11 @@
#define USB_MENTOR_CORE_OFFSET 0x400
struct am35x_glue {
struct device *dev;
struct platform_device *musb;
};
static inline void phy_on(void)
{
unsigned long timeout = jiffies + msecs_to_jiffies(100);
@ -544,55 +549,69 @@ static int __init am35x_probe(struct platform_device *pdev)
{
struct musb_hdrc_platform_data *pdata = pdev->dev.platform_data;
struct platform_device *musb;
struct am35x_glue *glue;
int ret = -ENOMEM;
glue = kzalloc(sizeof(*glue), GFP_KERNEL);
if (!glue) {
dev_err(&pdev->dev, "failed to allocate glue context\n");
goto err0;
}
musb = platform_device_alloc("musb-hdrc", -1);
if (!musb) {
dev_err(&pdev->dev, "failed to allocate musb device\n");
goto err0;
goto err1;
}
musb->dev.parent = &pdev->dev;
musb->dev.dma_mask = &am35x_dmamask;
musb->dev.coherent_dma_mask = am35x_dmamask;
platform_set_drvdata(pdev, musb);
glue->dev = &pdev->dev;
glue->musb = musb;
platform_set_drvdata(pdev, glue);
ret = platform_device_add_resources(musb, pdev->resource,
pdev->num_resources);
if (ret) {
dev_err(&pdev->dev, "failed to add resources\n");
goto err1;
goto err2;
}
ret = platform_device_add_data(musb, pdata, sizeof(*pdata));
if (ret) {
dev_err(&pdev->dev, "failed to add platform_data\n");
goto err1;
goto err2;
}
ret = platform_device_add(musb);
if (ret) {
dev_err(&pdev->dev, "failed to register musb device\n");
goto err1;
goto err2;
}
return 0;
err1:
err2:
platform_device_put(musb);
err1:
kfree(glue);
err0:
return ret;
}
static int __exit am35x_remove(struct platform_device *pdev)
{
struct platform_device *musb = platform_get_drvdata(pdev);
struct am35x_glue *glue = platform_get_drvdata(pdev);
platform_device_del(musb);
platform_device_put(musb);
platform_device_del(glue->musb);
platform_device_put(glue->musb);
kfree(glue);
return 0;
}