On 7/29/2013 7:55 PM, Sebastian Andrzej Siewior wrote:
* George Cherian | 2013-07-19 18:04:34 [+0530]:diff --git a/drivers/usb/phy/phy-omap-control.c b/drivers/usb/phy/phy-omap-control.c index 1419ced..4f2502c 100644 --- a/drivers/usb/phy/phy-omap-control.c +++ b/drivers/usb/phy/phy-omap-control.c @@ -46,6 +46,73 @@ struct device *omap_get_control_dev(void) EXPORT_SYMBOL_GPL(omap_get_control_dev); /** + * omap_control_am335x_phy_wkup - PHY wakeup on/off using control + * module + * @dev: the control module device + * @on: 0 to off and 1 to on PHY wakeup feature + * @id: phy id 0 or 1 for phy instance 0 and 1 repectively + * + * AMXXXX PHY driver should call this API to enable or disable PHY wakeup. + */ +void omap_control_am335x_phy_wkup(struct device *dev, bool on, u8 id) +{ + u32 val; + u32 *phy_wkup_reg; + struct omap_control_usb *control_usb = dev_get_drvdata(dev); + + if (control_usb->type != OMAP_CTRL_DEV_TYPE3 || id < 0 || id > 1) + return; + + phy_wkup_reg = control_usb->dev_conf + AM335X_USB_WKUP_OFFSET; + val = readl(phy_wkup_reg);Where do you get the memory from? In the DT patches I've made I export one memory space of 8 bytes for each phy. This memory space applies directly to the on/off register.
Control module have 2 separate registers for phy on/off per instance (offset 0x620 and 0x628), where as wkup_ctrl is a shared control module register (offset 0x648). Currently the control module driver maps memory from 0x620 till beyond 0x648 and uses the same mapping for writing to wkup_reg.
I didn't export the register for wakeup so far since I had no idea how this will be used. So how do you get your re-mapped memory here?
Mapping it per instance is not possible since its the same register (if we use devm_* calls).
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