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usb: dwc3: omap: add dwc3_omap_set_utmi_mode() function

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Move find and set the utmi mode to its own separate function.
Improve code readability, decrease the dwc3_probe() size.

Signed-off-by: George Cherian <george.cherian@ti.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
This commit is contained in:
George Cherian 2014-07-16 18:37:07 +05:30 committed by Felipe Balbi
parent 30fef1a97f
commit d2f0cf89ca
1 changed files with 25 additions and 19 deletions
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44
drivers/usb/dwc3/dwc3-omap.c
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@ -399,6 +399,30 @@ static void dwc3_omap_map_offset(struct dwc3_omap *omap)
}
}
static void dwc3_omap_set_utmi_mode(struct dwc3_omap *omap)
{
u32 reg;
struct device_node *node = omap->dev->of_node;
int utmi_mode = 0;
reg = dwc3_omap_read_utmi_status(omap);
of_property_read_u32(node, "utmi-mode", &utmi_mode);
switch (utmi_mode) {
case DWC3_OMAP_UTMI_MODE_SW:
reg |= USBOTGSS_UTMI_OTG_STATUS_SW_MODE;
break;
case DWC3_OMAP_UTMI_MODE_HW:
reg &= ~USBOTGSS_UTMI_OTG_STATUS_SW_MODE;
break;
default:
dev_dbg(omap->dev, "UNKNOWN utmi mode %d\n", utmi_mode);
}
dwc3_omap_write_utmi_status(omap, reg);
}
static int dwc3_omap_probe(struct platform_device *pdev)
{
struct device_node *node = pdev->dev.of_node;
@ -412,8 +436,6 @@ static int dwc3_omap_probe(struct platform_device *pdev)
int ret;
int irq;
int utmi_mode = 0;
u32 reg;
void __iomem *base;
@ -464,23 +486,7 @@ static int dwc3_omap_probe(struct platform_device *pdev)
}
dwc3_omap_map_offset(omap);
reg = dwc3_omap_read_utmi_status(omap);
of_property_read_u32(node, "utmi-mode", &utmi_mode);
switch (utmi_mode) {
case DWC3_OMAP_UTMI_MODE_SW:
reg |= USBOTGSS_UTMI_OTG_STATUS_SW_MODE;
break;
case DWC3_OMAP_UTMI_MODE_HW:
reg &= ~USBOTGSS_UTMI_OTG_STATUS_SW_MODE;
break;
default:
dev_dbg(dev, "UNKNOWN utmi mode %d\n", utmi_mode);
}
dwc3_omap_write_utmi_status(omap, reg);
dwc3_omap_set_utmi_mode(omap);
/* check the DMA Status */
reg = dwc3_omap_readl(omap->base, USBOTGSS_SYSCONFIG);