diff options
| author | Heikki Krogerus <heikki.krogerus@linux.intel.com> | 2015-09-21 11:14:33 +0300 |
|---|---|---|
| committer | Felipe Balbi <balbi@ti.com> | 2015-09-27 18:54:31 +0300 |
| commit | 666472733b8ce20716037c0d866395db54aa8c1d (patch) | |
| tree | 68266c3614f578dbab1a2a345e13bcba199216d6 /drivers/usb/dwc3/dwc3-st.c | |
| parent | 63863b988eeca2823ce76b28b104e0b8366cafec (diff) | |
| download | linux-666472733b8ce20716037c0d866395db54aa8c1d.tar.xz | |
usb: dwc3: st: prepare the driver for generic usb_get_dr_mode function
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>
Diffstat (limited to 'drivers/usb/dwc3/dwc3-st.c')
| -rw-r--r-- | drivers/usb/dwc3/dwc3-st.c | 12 |
1 files changed, 10 insertions, 2 deletions
diff --git a/drivers/usb/dwc3/dwc3-st.c b/drivers/usb/dwc3/dwc3-st.c index de4d52f62517..02d47d50905b 100644 --- a/drivers/usb/dwc3/dwc3-st.c +++ b/drivers/usb/dwc3/dwc3-st.c @@ -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. |