[PATCH 05/12] usb: dwc2: Add exit clock gating from session request interrupt
From: Artur Petrosyan <hidden>
Date: 2021-04-13 07:16:53
Also in:
lkml
Subsystem:
designware usb2 drd ip driver, the rest, usb subsystem · Maintainers:
Minas Harutyunyan, Linus Torvalds, Greg Kroah-Hartman
Added clock gating exit flow from session request interrupt handler according programming guide. Signed-off-by: Artur Petrosyan <redacted> --- drivers/usb/dwc2/core_intr.c | 19 +++++++++++++------ 1 file changed, 13 insertions(+), 6 deletions(-)
diff --git a/drivers/usb/dwc2/core_intr.c b/drivers/usb/dwc2/core_intr.c
index c764407e7633..550c52c1a0c7 100644
--- a/drivers/usb/dwc2/core_intr.c
+++ b/drivers/usb/dwc2/core_intr.c@@ -316,12 +316,19 @@ 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 && hsotg->in_ppd) { - ret = dwc2_exit_partial_power_down(hsotg, 0, - true); - if (ret) - dev_err(hsotg->dev, - "exit power_down failed\n"); + if (hsotg->lx_state == DWC2_L2) { + if (hsotg->in_ppd) { + ret = dwc2_exit_partial_power_down(hsotg, 0, + true); + if (ret) + dev_err(hsotg->dev, + "exit power_down failed\n"); + } + + /* Exit gadget mode clock gating. */ + if (hsotg->params.power_down == + DWC2_POWER_DOWN_PARAM_NONE && hsotg->bus_suspended) + dwc2_gadget_exit_clock_gating(hsotg, 0); } /*
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2.25.1