From: Quanyang Wang <quanyang.w...@windriver.com>
Add initialization for the structure usb_phy.
And a series of operations "flush-stop-reset" is needed so that we can
access usb phy via ULPI interface.
And otg_set_vbus is called after the host mode is determined because
we need call ulpi_set_vbus to set vbus via it.
Signed-off-by: Quanyang Wang <quanyang.w...@windriver.com>
Signed-off-by: Bruce Ashfield <bruce.ashfi...@gmail.com>
---
drivers/usb/chipidea/core.c | 12 ++++++++++++
1 file changed, 12 insertions(+)
diff --git a/drivers/usb/chipidea/core.c b/drivers/usb/chipidea/core.c
index 1fbcc3e1d3689..df3298c3eb766 100644
--- a/drivers/usb/chipidea/core.c
+++ b/drivers/usb/chipidea/core.c
@@ -216,6 +216,7 @@ static void ci_hdrc_enter_lpm(struct ci_hdrc *ci, bool
enable)
static int hw_device_init(struct ci_hdrc *ci, void __iomem *base)
{
u32 reg;
+ int ret;
/* bank is a module variable */
ci->hw_bank.abs = base;
@@ -241,6 +242,15 @@ static int hw_device_init(struct ci_hdrc *ci, void __iomem
*base)
if (ci->hw_ep_max > ENDPT_MAX)
return -ENODEV;
+ /* should flush & stop before reset */
+ hw_write(ci, OP_ENDPTFLUSH, ~0, ~0);
+ hw_write(ci, OP_USBCMD, USBCMD_RS, 0);
+ ret = hw_controller_reset(ci);
+ if (ret) {
+ dev_err(ci->dev, "error resetting controller, ret=%d\n", ret);
+ return ret;
+ }
+
ci_hdrc_enter_lpm(ci, false);
/* Disable all interrupts bits */
@@ -1090,6 +1100,7 @@ static int ci_hdrc_probe(struct platform_device *pdev)
ci->phy = ci->platdata->phy;
} else if (ci->platdata->usb_phy) {
ci->usb_phy = ci->platdata->usb_phy;
+ ci->usb_phy->io_priv = ci->hw_bank.regmap[OP_ULPI_VIEWPORT];
} else {
/* Look for a generic PHY first */
ci->phy = devm_phy_get(dev->parent, "usb-phy");
@@ -1160,6 +1171,7 @@ static int ci_hdrc_probe(struct platform_device *pdev)
else
goto deinit_phy;
}
+ otg_set_vbus(ci->usb_phy->otg, true);
}
if (dr_mode == USB_DR_MODE_OTG || dr_mode == USB_DR_MODE_PERIPHERAL) {
--
2.36.1
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