usb: musb: davinci: give it a context structure
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>
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@ -53,6 +53,11 @@
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#define USB_PHY_CTRL IO_ADDRESS(USBPHY_CTL_PADDR)
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#define DM355_DEEPSLEEP IO_ADDRESS(DM355_DEEPSLEEP_PADDR)
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struct davinci_glue {
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struct device *dev;
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struct platform_device *musb;
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};
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/* REVISIT (PM) we should be able to keep the PHY in low power mode most
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* of the time (24 MHZ oscillator and PLL off, etc) by setting POWER.D0
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* and, when in host mode, autosuspending idle root ports... PHYPLLON
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@ -523,55 +528,69 @@ static int __init davinci_probe(struct platform_device *pdev)
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{
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struct musb_hdrc_platform_data *pdata = pdev->dev.platform_data;
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struct platform_device *musb;
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struct davinci_glue *glue;
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int ret = -ENOMEM;
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glue = kzalloc(sizeof(*glue), GFP_KERNEL);
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if (!glue) {
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dev_err(&pdev->dev, "failed to allocate glue context\n");
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goto err0;
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}
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musb = platform_device_alloc("musb-hdrc", -1);
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if (!musb) {
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dev_err(&pdev->dev, "failed to allocate musb device\n");
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goto err0;
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goto err1;
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}
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musb->dev.parent = &pdev->dev;
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musb->dev.dma_mask = &davinci_dmamask;
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musb->dev.coherent_dma_mask = davinci_dmamask;
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platform_set_drvdata(pdev, musb);
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glue->dev = &pdev->dev;
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glue->musb = musb;
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platform_set_drvdata(pdev, glue);
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ret = platform_device_add_resources(musb, pdev->resource,
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pdev->num_resources);
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if (ret) {
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dev_err(&pdev->dev, "failed to add resources\n");
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goto err1;
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goto err2;
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}
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ret = platform_device_add_data(musb, pdata, sizeof(*pdata));
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if (ret) {
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dev_err(&pdev->dev, "failed to add platform_data\n");
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goto err1;
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goto err2;
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}
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ret = platform_device_add(musb);
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if (ret) {
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dev_err(&pdev->dev, "failed to register musb device\n");
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goto err1;
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goto err2;
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}
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return 0;
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err1:
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err2:
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platform_device_put(musb);
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err1:
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kfree(glue);
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err0:
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return ret;
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}
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static int __exit davinci_remove(struct platform_device *pdev)
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{
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struct platform_device *musb = platform_get_drvdata(pdev);
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struct davinci_glue *glue = platform_get_drvdata(pdev);
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platform_device_del(musb);
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platform_device_put(musb);
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platform_device_del(glue->musb);
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platform_device_put(glue->musb);
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kfree(glue);
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return 0;
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}
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