The select_dr_mode operation is executed when the glue driver is probed. The role of this optional function is to configure the operating mode of the controller at the glue level.
Signed-off-by: Jean-Jacques Hiblot jjhiblot@ti.com ---
Changes in v4: None Changes in v3: None Changes in v2: None
drivers/usb/dwc3/dwc3-generic.c | 26 ++++++++++++++++++++++++++ 1 file changed, 26 insertions(+)
diff --git a/drivers/usb/dwc3/dwc3-generic.c b/drivers/usb/dwc3/dwc3-generic.c index 7be0187..6d9be9b 100644 --- a/drivers/usb/dwc3/dwc3-generic.c +++ b/drivers/usb/dwc3/dwc3-generic.c @@ -8,6 +8,7 @@ */
#include <common.h> +#include <asm-generic/io.h> #include <dm.h> #include <dm/device-internal.h> #include <dm/lists.h> @@ -110,6 +111,12 @@ U_BOOT_DRIVER(dwc3_generic_peripheral) = { struct dwc3_glue_data { struct clk_bulk clks; struct reset_ctl_bulk resets; + fdt_addr_t regs; +}; + +struct dwc3_glue_ops { + void (*select_dr_mode)(struct udevice *dev, int index, + enum usb_dr_mode mode); };
static int dwc3_glue_bind(struct udevice *parent) @@ -205,9 +212,14 @@ static int dwc3_glue_clk_init(struct udevice *dev,
static int dwc3_glue_probe(struct udevice *dev) { + struct dwc3_glue_ops *ops = (struct dwc3_glue_ops *)dev_get_driver_data(dev); struct dwc3_glue_data *glue = dev_get_platdata(dev); + struct udevice *child = NULL; + int index = 0; int ret;
+ glue->regs = dev_read_addr(dev); + ret = dwc3_glue_clk_init(dev, glue); if (ret) return ret; @@ -216,6 +228,20 @@ static int dwc3_glue_probe(struct udevice *dev) if (ret) return ret;
+ ret = device_find_first_child(dev, &child); + if (ret) + return ret; + + while (child) { + enum usb_dr_mode dr_mode; + + dr_mode = usb_get_dr_mode(dev_of_offset(child)); + device_find_next_child(&child); + if (ops && ops->select_dr_mode) + ops->select_dr_mode(dev, index, dr_mode); + index++; + } + return 0; }