diff options
author | Felipe Balbi <balbi@ti.com> | 2014-04-16 15:08:29 -0500 |
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committer | Felipe Balbi <balbi@ti.com> | 2014-04-16 15:08:29 -0500 |
commit | 3c9f94aca66aa8c83d531961ea8c7b8bace9433c (patch) | |
tree | 4d2a3dfdd7f50a9beb75cf7e851d734453cc91d4 /drivers/usb | |
parent | 687ef9817df7ed960d14575b9033dde3d04631fe (diff) | |
download | op-kernel-dev-3c9f94aca66aa8c83d531961ea8c7b8bace9433c.zip op-kernel-dev-3c9f94aca66aa8c83d531961ea8c7b8bace9433c.tar.gz |
usb: dwc3: core: refactor PHY initialization
our probe() routine is too large and we can
easily refactor PHY-related code out to another
function to make it slightly less painful to read.
Signed-off-by: Felipe Balbi <balbi@ti.com>
Diffstat (limited to 'drivers/usb')
-rw-r--r-- | drivers/usb/dwc3/core.c | 120 |
1 files changed, 66 insertions, 54 deletions
diff --git a/drivers/usb/dwc3/core.c b/drivers/usb/dwc3/core.c index d001417..38976f3 100644 --- a/drivers/usb/dwc3/core.c +++ b/drivers/usb/dwc3/core.c @@ -486,70 +486,20 @@ static void dwc3_core_exit(struct dwc3 *dwc) phy_exit(dwc->usb3_generic_phy); } -#define DWC3_ALIGN_MASK (16 - 1) - -static int dwc3_probe(struct platform_device *pdev) +static int dwc3_core_get_phy(struct dwc3 *dwc) { - struct device *dev = &pdev->dev; - struct dwc3_platform_data *pdata = dev_get_platdata(dev); + struct device *dev = dwc->dev; struct device_node *node = dev->of_node; - struct resource *res; - struct dwc3 *dwc; - - int ret = -ENOMEM; - - void __iomem *regs; - void *mem; - - mem = devm_kzalloc(dev, sizeof(*dwc) + DWC3_ALIGN_MASK, GFP_KERNEL); - if (!mem) { - dev_err(dev, "not enough memory\n"); - return -ENOMEM; - } - dwc = PTR_ALIGN(mem, DWC3_ALIGN_MASK + 1); - dwc->mem = mem; - - res = platform_get_resource(pdev, IORESOURCE_IRQ, 0); - if (!res) { - dev_err(dev, "missing IRQ\n"); - return -ENODEV; - } - dwc->xhci_resources[1].start = res->start; - dwc->xhci_resources[1].end = res->end; - dwc->xhci_resources[1].flags = res->flags; - dwc->xhci_resources[1].name = res->name; - - res = platform_get_resource(pdev, IORESOURCE_MEM, 0); - if (!res) { - dev_err(dev, "missing memory resource\n"); - return -ENODEV; - } + int ret; if (node) { - dwc->maximum_speed = of_usb_get_maximum_speed(node); - dwc->usb2_phy = devm_usb_get_phy_by_phandle(dev, "usb-phy", 0); dwc->usb3_phy = devm_usb_get_phy_by_phandle(dev, "usb-phy", 1); - - dwc->needs_fifo_resize = of_property_read_bool(node, "tx-fifo-resize"); - dwc->dr_mode = of_usb_get_dr_mode(node); - } else if (pdata) { - dwc->maximum_speed = pdata->maximum_speed; - - dwc->usb2_phy = devm_usb_get_phy(dev, USB_PHY_TYPE_USB2); - dwc->usb3_phy = devm_usb_get_phy(dev, USB_PHY_TYPE_USB3); - - dwc->needs_fifo_resize = pdata->tx_fifo_resize; - dwc->dr_mode = pdata->dr_mode; } else { dwc->usb2_phy = devm_usb_get_phy(dev, USB_PHY_TYPE_USB2); dwc->usb3_phy = devm_usb_get_phy(dev, USB_PHY_TYPE_USB3); } - /* default to superspeed if no maximum_speed passed */ - if (dwc->maximum_speed == USB_SPEED_UNKNOWN) - dwc->maximum_speed = USB_SPEED_SUPER; - if (IS_ERR(dwc->usb2_phy)) { ret = PTR_ERR(dwc->usb2_phy); if (ret == -ENXIO || ret == -ENODEV) { @@ -600,6 +550,69 @@ static int dwc3_probe(struct platform_device *pdev) } } + return 0; +} + +#define DWC3_ALIGN_MASK (16 - 1) + +static int dwc3_probe(struct platform_device *pdev) +{ + struct device *dev = &pdev->dev; + struct dwc3_platform_data *pdata = dev_get_platdata(dev); + struct device_node *node = dev->of_node; + struct resource *res; + struct dwc3 *dwc; + + int ret = -ENOMEM; + + void __iomem *regs; + void *mem; + + mem = devm_kzalloc(dev, sizeof(*dwc) + DWC3_ALIGN_MASK, GFP_KERNEL); + if (!mem) { + dev_err(dev, "not enough memory\n"); + return -ENOMEM; + } + dwc = PTR_ALIGN(mem, DWC3_ALIGN_MASK + 1); + dwc->mem = mem; + dwc->dev = dev; + + res = platform_get_resource(pdev, IORESOURCE_IRQ, 0); + if (!res) { + dev_err(dev, "missing IRQ\n"); + return -ENODEV; + } + dwc->xhci_resources[1].start = res->start; + dwc->xhci_resources[1].end = res->end; + dwc->xhci_resources[1].flags = res->flags; + dwc->xhci_resources[1].name = res->name; + + res = platform_get_resource(pdev, IORESOURCE_MEM, 0); + if (!res) { + dev_err(dev, "missing memory resource\n"); + return -ENODEV; + } + + if (node) { + dwc->maximum_speed = of_usb_get_maximum_speed(node); + + dwc->needs_fifo_resize = of_property_read_bool(node, "tx-fifo-resize"); + dwc->dr_mode = of_usb_get_dr_mode(node); + } else if (pdata) { + dwc->maximum_speed = pdata->maximum_speed; + + dwc->needs_fifo_resize = pdata->tx_fifo_resize; + dwc->dr_mode = pdata->dr_mode; + } + + /* default to superspeed if no maximum_speed passed */ + if (dwc->maximum_speed == USB_SPEED_UNKNOWN) + dwc->maximum_speed = USB_SPEED_SUPER; + + ret = dwc3_core_get_phy(dwc); + if (ret) + return ret; + dwc->xhci_resources[0].start = res->start; dwc->xhci_resources[0].end = dwc->xhci_resources[0].start + DWC3_XHCI_REGS_END; @@ -621,7 +634,6 @@ static int dwc3_probe(struct platform_device *pdev) dwc->regs = regs; dwc->regs_size = resource_size(res); - dwc->dev = dev; dev->dma_mask = dev->parent->dma_mask; dev->dma_parms = dev->parent->dma_parms; |