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usb: dwc3: core: add dwc3_get_properties()

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This helper will be responsible for reading and
parsing our properties. No functional changes in
this patch, cleanup only.

Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
This commit is contained in:
Felipe Balbi 2016-10-14 16:30:52 +03:00
parent 3b2733227f
commit c5ac6116db
1 changed files with 49 additions and 41 deletions
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90
drivers/usb/dwc3/core.c
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@ -948,52 +948,13 @@ static void dwc3_core_exit_mode(struct dwc3 *dwc)
}
}
static int dwc3_probe(struct platform_device *pdev)
static void dwc3_get_properties(struct dwc3 *dwc)
{
struct device *dev = &pdev->dev;
struct resource *res;
struct dwc3 *dwc;
struct device *dev = dwc->dev;
u8 lpm_nyet_threshold;
u8 tx_de_emphasis;
u8 hird_threshold;
int ret;
void __iomem *regs;
dwc = devm_kzalloc(dev, sizeof(*dwc), GFP_KERNEL);
if (!dwc)
return -ENOMEM;
dwc->dev = dev;
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
if (!res) {
dev_err(dev, "missing memory resource\n");
return -ENODEV;
}
dwc->xhci_resources[0].start = res->start;
dwc->xhci_resources[0].end = dwc->xhci_resources[0].start +
DWC3_XHCI_REGS_END;
dwc->xhci_resources[0].flags = res->flags;
dwc->xhci_resources[0].name = res->name;
res->start += DWC3_GLOBALS_REGS_START;
/*
* Request memory region but exclude xHCI regs,
* since it will be requested by the xhci-plat driver.
*/
regs = devm_ioremap_resource(dev, res);
if (IS_ERR(regs)) {
ret = PTR_ERR(regs);
goto err0;
}
dwc->regs = regs;
dwc->regs_size = resource_size(res);
/* default to highest possible threshold */
lpm_nyet_threshold = 0xff;
@ -1065,6 +1026,53 @@ static int dwc3_probe(struct platform_device *pdev)
dwc->hird_threshold = hird_threshold
| (dwc->is_utmi_l1_suspend << 4);
}
static int dwc3_probe(struct platform_device *pdev)
{
struct device *dev = &pdev->dev;
struct resource *res;
struct dwc3 *dwc;
int ret;
void __iomem *regs;
dwc = devm_kzalloc(dev, sizeof(*dwc), GFP_KERNEL);
if (!dwc)
return -ENOMEM;
dwc->dev = dev;
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
if (!res) {
dev_err(dev, "missing memory resource\n");
return -ENODEV;
}
dwc->xhci_resources[0].start = res->start;
dwc->xhci_resources[0].end = dwc->xhci_resources[0].start +
DWC3_XHCI_REGS_END;
dwc->xhci_resources[0].flags = res->flags;
dwc->xhci_resources[0].name = res->name;
res->start += DWC3_GLOBALS_REGS_START;
/*
* Request memory region but exclude xHCI regs,
* since it will be requested by the xhci-plat driver.
*/
regs = devm_ioremap_resource(dev, res);
if (IS_ERR(regs)) {
ret = PTR_ERR(regs);
goto err0;
}
dwc->regs = regs;
dwc->regs_size = resource_size(res);
dwc3_get_properties(dwc);
platform_set_drvdata(pdev, dwc);
dwc3_cache_hwparams(dwc);