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Commit ffb55e5e authored Jun 21, 2016 by Manu Gautam

usb: phy-msm-qusb: Re-initialize PHY after DCD detection



PHY registers are not restored to default values after
DCD sequence which affects electrical compliance results.
Re-initialize PHY after DCD to put PHY in correct state.
While at it also fix DCD happening for CDP as well and
might result in over-writing charger type to SDP for CDP.

Change-Id: Ia841f7ab5f86e582158132777e3657229c904e1d
CRs-fixed: 1031591
Signed-off-by: Manu Gautam <mgautam@codeaurora.org>

parent 450bd44d

drivers/usb/dwc3/dwc3-msm.c

+2 −1

Original line number	Diff line number	Diff line
		@@ -3578,7 +3578,8 @@ static void dwc3_otg_sm_work(struct work_struct *w)
		atomic_read(
		&mdwc->dev->power.usage_count));
		/* check dp/dm for SDP & runtime_put if !SDP */
		if (mdwc->detect_dpdm_floating) {
		if (mdwc->detect_dpdm_floating &&
		mdwc->chg_type == DWC3_SDP_CHARGER) {
		dwc3_check_float_lines(mdwc);
		if (mdwc->chg_type != DWC3_SDP_CHARGER)
		break;

drivers/usb/phy/phy-msm-qusb.c

+3 −0

Original line number	Diff line number	Diff line
		@@ -822,6 +822,9 @@ static int qusb_phy_linestate_with_idp_src(struct usb_phy *phy)
		ret = (int_status >> 2) \| ((int_status & 0x1) << 1);
		pr_debug("%s: int_status:%x, dpdm:%x\n", __func__, int_status, ret);

		/* Re-initialize PHY */
		qusb_phy_init(phy);

		return ret;
		}