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usb: dwc3: st: prepare the driver for generic usb_get_dr_mode function

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of_usb_get_dr_mode will be converted into more generic
usb_get_dr_mode function that will take struct device
instead of struct device_node as its parameter.

To make the conversion possible later, waiting for the
platform device for dwc3 to be populated before calling
of_usb_get_dr_mode.

Signed-off-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
CC: Giuseppe Cavallaro <peppe.cavallaro@st.com>
CC: Peter Griffin <peter.griffin@linaro.org>
Signed-off-by: Felipe Balbi <balbi@ti.com>
This commit is contained in:
Heikki Krogerus 2015-09-21 11:14:33 +03:00 committed by Felipe Balbi
parent 63863b988e
commit 666472733b
1 changed files with 10 additions and 2 deletions
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12
drivers/usb/dwc3/dwc3-st.c
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@ -195,6 +195,7 @@ static int st_dwc3_probe(struct platform_device *pdev)
struct resource *res;
struct device *dev = &pdev->dev;
struct device_node *node = dev->of_node, *child;
struct platform_device *child_pdev;
struct regmap *regmap;
int ret;
@ -253,8 +254,6 @@ static int st_dwc3_probe(struct platform_device *pdev)
goto undo_softreset;
}
dwc3_data->dr_mode = of_usb_get_dr_mode(child);
/* Allocate and initialize the core */
ret = of_platform_populate(node, NULL, NULL, dev);
if (ret) {
@ -262,6 +261,15 @@ static int st_dwc3_probe(struct platform_device *pdev)
goto undo_softreset;
}
child_pdev = of_find_device_by_node(child);
if (!child_pdev) {
dev_err(dev, "failed to find dwc3 core device\n");
ret = -ENODEV;
goto undo_softreset;
}
dwc3_data->dr_mode = of_usb_get_dr_mode(child_pdev->dev.of_node);
/*
* Configure the USB port as device or host according to the static
* configuration passed from DT.