Messages in this thread Patch in this message |  | | From | Krishna Kurapati <> | | Subject | [PATCH v19 9/9] usb: dwc3: qcom: Add multiport suspend/resume support for wrapper | | Date | Thu, 4 Apr 2024 10:42:29 +0530 |
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Power event IRQ is used for wakeup in cases: a) where the controller is super speed capable and missing an ss_phy interrupt. b) where the GIC is not capable of detecting DP/DM hs phy irq's.
Power event IRQ stat register indicates whether high speed phy entered and exited L2 successfully during suspend and resume. Indicate the same for all ports of multiport.
Signed-off-by: Krishna Kurapati <quic_kriskura@quicinc.com> Reviewed-by: Johan Hovold <johan+linaro@kernel.org> --- drivers/usb/dwc3/dwc3-qcom.c | 22 +++++++++++++++++----- 1 file changed, 17 insertions(+), 5 deletions(-)
diff --git a/drivers/usb/dwc3/dwc3-qcom.c b/drivers/usb/dwc3/dwc3-qcom.c index 12182e0f8f45..d3e6d5d5e8bf 100644 --- a/drivers/usb/dwc3/dwc3-qcom.c +++ b/drivers/usb/dwc3/dwc3-qcom.c @@ -52,6 +52,13 @@ #define APPS_USB_AVG_BW 0 #define APPS_USB_PEAK_BW MBps_to_icc(40) +static const u32 pwr_evnt_irq_stat_reg[DWC3_MAX_PORTS] = { + 0x58, + 0x1dc, + 0x228, + 0x238, +}; + struct dwc3_qcom_port { int qusb2_phy_irq; int dp_hs_phy_irq; @@ -421,9 +428,11 @@ static int dwc3_qcom_suspend(struct dwc3_qcom *qcom, bool wakeup) if (qcom->is_suspended) return 0; - val = readl(qcom->qscratch_base + PWR_EVNT_IRQ_STAT_REG); - if (!(val & PWR_EVNT_LPM_IN_L2_MASK)) - dev_err(qcom->dev, "HS-PHY not in L2\n"); + for (i = 0; i < qcom->num_ports; i++) { + val = readl(qcom->qscratch_base + pwr_evnt_irq_stat_reg[i]); + if (!(val & PWR_EVNT_LPM_IN_L2_MASK)) + dev_err(qcom->dev, "port-%d HS-PHY not in L2\n", i + 1); + } for (i = qcom->num_clocks - 1; i >= 0; i--) clk_disable_unprepare(qcom->clks[i]); @@ -472,8 +481,11 @@ static int dwc3_qcom_resume(struct dwc3_qcom *qcom, bool wakeup) dev_warn(qcom->dev, "failed to enable interconnect: %d\n", ret); /* Clear existing events from PHY related to L2 in/out */ - dwc3_qcom_setbits(qcom->qscratch_base, PWR_EVNT_IRQ_STAT_REG, - PWR_EVNT_LPM_IN_L2_MASK | PWR_EVNT_LPM_OUT_L2_MASK); + for (i = 0; i < qcom->num_ports; i++) { + dwc3_qcom_setbits(qcom->qscratch_base, + pwr_evnt_irq_stat_reg[i], + PWR_EVNT_LPM_IN_L2_MASK | PWR_EVNT_LPM_OUT_L2_MASK); + } qcom->is_suspended = false; -- 2.34.1
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