diff options
Diffstat (limited to 'drivers/usb/dwc2/core_intr.c')
| -rw-r--r-- | drivers/usb/dwc2/core_intr.c | 26 |
1 files changed, 23 insertions, 3 deletions
diff --git a/drivers/usb/dwc2/core_intr.c b/drivers/usb/dwc2/core_intr.c index 26d752a4c3..7d3e641806 100644 --- a/drivers/usb/dwc2/core_intr.c +++ b/drivers/usb/dwc2/core_intr.c @@ -84,6 +84,7 @@ static void dwc2_handle_otg_intr(struct dwc2_hsotg *hsotg) u32 gotgint; u32 gotgctl; u32 gintmsk; + u32 pcgctl; gotgint = dwc2_readl(hsotg, GOTGINT); gotgctl = dwc2_readl(hsotg, GOTGCTL); @@ -96,8 +97,22 @@ static void dwc2_handle_otg_intr(struct dwc2_hsotg *hsotg) dwc2_op_state_str(hsotg)); gotgctl = dwc2_readl(hsotg, GOTGCTL); - if (dwc2_is_device_mode(hsotg)) + if (dwc2_is_device_mode(hsotg)) { + if (hsotg->params.eusb2_disc) { + /* Clear the Gate hclk. */ + pcgctl = dwc2_readl(hsotg, PCGCTL); + pcgctl &= ~PCGCTL_GATEHCLK; + dwc2_writel(hsotg, pcgctl, PCGCTL); + udelay(5); + + /* Clear Phy Clock bit. */ + pcgctl = dwc2_readl(hsotg, PCGCTL); + pcgctl &= ~PCGCTL_STOPPCLK; + dwc2_writel(hsotg, pcgctl, PCGCTL); + udelay(5); + } dwc2_hsotg_disconnect(hsotg); + } if (hsotg->op_state == OTG_STATE_B_HOST) { hsotg->op_state = OTG_STATE_B_PERIPHERAL; @@ -117,7 +132,7 @@ static void dwc2_handle_otg_intr(struct dwc2_hsotg *hsotg) * disconnected */ /* Reset to a clean state */ - hsotg->lx_state = DWC2_L0; + hsotg->lx_state = DWC2_L3; } gotgctl = dwc2_readl(hsotg, GOTGCTL); @@ -286,7 +301,7 @@ static void dwc2_handle_session_req_intr(struct dwc2_hsotg *hsotg) hsotg->lx_state); if (dwc2_is_device_mode(hsotg)) { - if (hsotg->lx_state == DWC2_L2) { + if (hsotg->lx_state != DWC2_L0) { if (hsotg->in_ppd) { ret = dwc2_exit_partial_power_down(hsotg, 0, true); @@ -714,6 +729,11 @@ static inline void dwc_handle_gpwrdn_disc_det(struct dwc2_hsotg *hsotg, gpwrdn_tmp &= ~GPWRDN_PMUINTSEL; dwc2_writel(hsotg, gpwrdn_tmp, GPWRDN); + /* Reset ULPI latch */ + gpwrdn = dwc2_readl(hsotg, GPWRDN); + gpwrdn &= ~GPWRDN_ULPI_LATCH_EN_DURING_HIB_ENTRY; + dwc2_writel(hsotg, gpwrdn, GPWRDN); + /* De-assert Wakeup Logic */ gpwrdn_tmp = dwc2_readl(hsotg, GPWRDN); gpwrdn_tmp &= ~GPWRDN_PMUACTV; |