On Tue, Feb 06, 2024, Krishna Kurapati wrote:
> Power event IRQ stat registers are present for each port
> connected to controller. Add support for modifying all power event
> irq stat registers present in wrapper.
>
> Signed-off-by: Krishna Kurapati <quic_kriskura@xxxxxxxxxxx>
> ---
> drivers/usb/dwc3/dwc3-qcom.c | 30 +++++++++++++++++++++++-------
> 1 file changed, 23 insertions(+), 7 deletions(-)
>
> diff --git a/drivers/usb/dwc3/dwc3-qcom.c b/drivers/usb/dwc3/dwc3-qcom.c
> index 572dc3fdae12..e789745a9468 100644
> --- a/drivers/usb/dwc3/dwc3-qcom.c
> +++ b/drivers/usb/dwc3/dwc3-qcom.c
> @@ -37,7 +37,11 @@
> #define PIPE3_PHYSTATUS_SW BIT(3)
> #define PIPE_UTMI_CLK_DIS BIT(8)
>
> -#define PWR_EVNT_IRQ_STAT_REG 0x58
> +#define PWR_EVNT_IRQ1_STAT_REG 0x58
> +#define PWR_EVNT_IRQ2_STAT_REG 0x1dc
> +#define PWR_EVNT_IRQ3_STAT_REG 0x228
> +#define PWR_EVNT_IRQ4_STAT_REG 0x238
> +
> #define PWR_EVNT_LPM_IN_L2_MASK BIT(4)
> #define PWR_EVNT_LPM_OUT_L2_MASK BIT(5)
>
> @@ -109,6 +113,13 @@ struct dwc3_qcom {
> u8 num_ports;
> };
>
> +static const u32 pwr_evnt_irq_stat_reg_offset[DWC3_MAX_PORTS] = {
> + PWR_EVNT_IRQ1_STAT_REG,
> + PWR_EVNT_IRQ2_STAT_REG,
> + PWR_EVNT_IRQ3_STAT_REG,
> + PWR_EVNT_IRQ4_STAT_REG,
> +};
> +
> static inline void dwc3_qcom_setbits(void __iomem *base, u32 offset, u32 val)
> {
> u32 reg;
> @@ -444,9 +455,11 @@ 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_offset[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]);
> @@ -491,9 +504,12 @@ static int dwc3_qcom_resume(struct dwc3_qcom *qcom, bool wakeup)
> if (ret)
> 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++) {
> + /* Clear existing events from PHY related to L2 in/out */
> + dwc3_qcom_setbits(qcom->qscratch_base,
> + pwr_evnt_irq_stat_reg_offset[i],
> + PWR_EVNT_LPM_IN_L2_MASK | PWR_EVNT_LPM_OUT_L2_MASK);
> + }
>
> qcom->is_suspended = false;
>
> --
> 2.34.1
>
Acked-by: Thinh Nguyen <Thinh.Nguyen@xxxxxxxxxxxx>
BR,
Thinh
