On 2/11/2016 2:02 PM, Petr Kulhavy wrote:
This adds two functions to get DT properties "mentor,power" and "dr_mode":
musb_get_power() and musb_mode musb_get_mode()
Signed-off-by: Petr Kulhavy <p...@barix.com>
---
drivers/usb/musb/musb_core.c | 36 ++++++++++++++++++++++++++++++++++++
drivers/usb/musb/musb_core.h | 13 +++++++++++++
2 files changed, 49 insertions(+)
diff --git a/drivers/usb/musb/musb_core.c b/drivers/usb/musb/musb_core.c
index c3791a0..f96a79a 100644
--- a/drivers/usb/musb/musb_core.c
+++ b/drivers/usb/musb/musb_core.c
[...]
@@ -129,6 +130,41 @@ static inline struct musb *dev_to_musb(struct device *dev)
return dev_get_drvdata(dev);
}
+enum musb_mode musb_get_mode(struct device *dev)
+{
+ enum usb_dr_mode mode;
+
+ mode = usb_get_dr_mode(dev);
+ switch (mode) {
+ case USB_DR_MODE_HOST:
+ return MUSB_HOST;
+
+ case USB_DR_MODE_PERIPHERAL:
+ return MUSB_PERIPHERAL;
+
+ case USB_DR_MODE_OTG:
+ return MUSB_OTG;
+
+ default:
+ return MUSB_UNDEFINED;
I'd skip the empty lines...
+ }
+}
+EXPORT_SYMBOL_GPL(musb_get_mode);
+
+u8 musb_get_power(struct device *dev)
Might be worth enclosing into #ifdef CONFIG_OF...
+{
+ int ret;
+ unsigned power_ma;
+
+ /* the "mentor,power" value is in milliamperes, whereas
+ * the mentor configuration is in 2mA units
+ */
+ ret = of_property_read_u32(dev->of_node, "mentor,power", &power_ma);
+
+ return ret ? 0 : power_ma / 2;
You forgot to check for the maximum possible value (510).
+}
+EXPORT_SYMBOL_GPL(musb_get_power);
+
[...]
Actually, we also have UDC specific 'min_power' field and a number of
other fields (does it really work w/o specifying 'clock' BTW?). I'd suggest a
larger function, assigning directly to the platform data fields...
MBR, Sergei
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