From: Artur Petrosyan <Arthur.Petrosyan@synopsys.com>
To: Felipe Balbi <balbi@kernel.org>,
Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
Minas Harutyunyan <Minas.Harutyunyan@synopsys.com>,
linux-usb@vger.kernel.org, linux-kernel@vger.kernel.org
Cc: John Youn <John.Youn@synopsys.com>,
Artur Petrosyan <Arthur.Petrosyan@synopsys.com>,
Minas Harutyunyan <Minas.Harutyunyan@synopsys.com>
Subject: [PATCH v2 04/12] usb: dwc2: Add exit clock gating from wakeup interrupt
Date: Tue, 13 Apr 2021 11:36:30 +0400 [thread overview]
Message-ID: <20210413073630.EF2CEA0094@mailhost.synopsys.com> (raw)
In-Reply-To: <cover.1618297800.git.Arthur.Petrosyan@synopsys.com>
Added exit from clock gating mode when wakeup interrupt
is detected. To exit from the clock gating
in device mode "dwc2_gadget_exit_clock_gating()"
function is used with rem_wakeup parameter 0. To exit
clock gating in host mode "dwc2_host_exit_clock_gating()"
with rem_wakeup parameter 1.
Signed-off-by: Artur Petrosyan <Arthur.Petrosyan@synopsys.com>
Acked-by: Minas Harutyunyan <Minas.Harutyunyan@synopsys.com>
---
drivers/usb/dwc2/core_intr.c | 33 ++++++++++++++++++++++-----------
1 file changed, 22 insertions(+), 11 deletions(-)
diff --git a/drivers/usb/dwc2/core_intr.c b/drivers/usb/dwc2/core_intr.c
index ab7fe303c0f9..c764407e7633 100644
--- a/drivers/usb/dwc2/core_intr.c
+++ b/drivers/usb/dwc2/core_intr.c
@@ -415,17 +415,24 @@ static void dwc2_handle_wakeup_detected_intr(struct dwc2_hsotg *hsotg)
if (dwc2_is_device_mode(hsotg)) {
dev_dbg(hsotg->dev, "DSTS=0x%0x\n",
dwc2_readl(hsotg, DSTS));
- if (hsotg->lx_state == DWC2_L2 && hsotg->in_ppd) {
- u32 dctl = dwc2_readl(hsotg, DCTL);
- /* Clear Remote Wakeup Signaling */
- dctl &= ~DCTL_RMTWKUPSIG;
- dwc2_writel(hsotg, dctl, DCTL);
- ret = dwc2_exit_partial_power_down(hsotg, 1,
- true);
- if (ret)
- dev_err(hsotg->dev,
- "exit partial_power_down failed\n");
- call_gadget(hsotg, resume);
+ if (hsotg->lx_state == DWC2_L2) {
+ if (hsotg->in_ppd) {
+ u32 dctl = dwc2_readl(hsotg, DCTL);
+ /* Clear Remote Wakeup Signaling */
+ dctl &= ~DCTL_RMTWKUPSIG;
+ dwc2_writel(hsotg, dctl, DCTL);
+ ret = dwc2_exit_partial_power_down(hsotg, 1,
+ true);
+ if (ret)
+ dev_err(hsotg->dev,
+ "exit partial_power_down failed\n");
+ call_gadget(hsotg, resume);
+ }
+
+ /* 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);
} else {
/* Change to L0 state */
hsotg->lx_state = DWC2_L0;
@@ -440,6 +447,10 @@ static void dwc2_handle_wakeup_detected_intr(struct dwc2_hsotg *hsotg)
"exit partial_power_down failed\n");
}
+ if (hsotg->params.power_down ==
+ DWC2_POWER_DOWN_PARAM_NONE && hsotg->bus_suspended)
+ dwc2_host_exit_clock_gating(hsotg, 1);
+
/*
* If we've got this quirk then the PHY is stuck upon
* wakeup. Assert reset. This will propagate out and
--
2.25.1
next prev parent reply other threads:[~2021-04-13 7:36 UTC|newest]
Thread overview: 31+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <cover.1618297800.git.Arthur.Petrosyan@synopsys.com>
2021-04-13 7:16 ` [PATCH 01/12] usb: dwc2: Add device clock gating support functions Artur Petrosyan
2021-04-13 7:16 ` [PATCH 02/12] usb: dwc2: Add host " Artur Petrosyan
2021-04-13 7:16 ` [PATCH 03/12] usb: dwc2: Allow entering clock gating from USB_SUSPEND interrupt Artur Petrosyan
2021-04-13 9:25 ` Sergei Shtylyov
2021-04-13 7:16 ` [PATCH 04/12] usb: dwc2: Add exit clock gating from wakeup interrupt Artur Petrosyan
2021-04-13 7:16 ` [PATCH 05/12] usb: dwc2: Add exit clock gating from session request interrupt Artur Petrosyan
2021-04-13 7:16 ` [PATCH 06/12] usb: dwc2: Add exit clock gating when port reset is asserted Artur Petrosyan
2021-04-13 7:17 ` [PATCH 07/12] usb: dwc2: Update enter clock gating when port is suspended Artur Petrosyan
2021-04-13 9:22 ` Sergei Shtylyov
2021-04-13 10:24 ` Greg Kroah-Hartman
2021-04-13 7:17 ` [PATCH 08/12] usb: dwc2: Update exit clock gating when port is resumed Artur Petrosyan
2021-04-13 7:17 ` [PATCH 09/12] usb: dwc2: Allow exit clock gating in urb enqueue Artur Petrosyan
2021-04-13 7:17 ` [PATCH 10/12] usb: dwc2: Add clock gating entering flow by system suspend Artur Petrosyan
2021-04-13 7:17 ` [PATCH 11/12] usb: dwc2: Add clock gating exiting flow by system resume Artur Petrosyan
2021-04-13 7:17 ` [PATCH 12/12] usb: dwc2: Add exit clock gating before removing driver Artur Petrosyan
2021-04-13 7:36 ` [PATCH v2 01/12] usb: dwc2: Add device clock gating support functions Artur Petrosyan
2021-04-13 7:36 ` [PATCH v2 02/12] usb: dwc2: Add host " Artur Petrosyan
2021-04-13 7:36 ` [PATCH v2 03/12] usb: dwc2: Allow entering clock gating from USB_SUSPEND interrupt Artur Petrosyan
2021-04-13 7:36 ` Artur Petrosyan [this message]
2021-04-13 7:36 ` [PATCH v2 05/12] usb: dwc2: Add exit clock gating from session request interrupt Artur Petrosyan
2021-04-13 7:36 ` [PATCH v2 06/12] usb: dwc2: Add exit clock gating when port reset is asserted Artur Petrosyan
2021-04-13 7:36 ` [PATCH v2 07/12] usb: dwc2: Update enter clock gating when port is suspended Artur Petrosyan
2021-04-13 7:37 ` [PATCH v2 08/12] usb: dwc2: Update exit clock gating when port is resumed Artur Petrosyan
2021-04-13 7:37 ` [PATCH v2 09/12] usb: dwc2: Allow exit clock gating in urb enqueue Artur Petrosyan
2021-04-13 7:37 ` [PATCH v2 10/12] usb: dwc2: Add clock gating entering flow by system suspend Artur Petrosyan
2021-04-13 9:29 ` Sergei Shtylyov
2021-04-13 7:37 ` [PATCH v2 11/12] usb: dwc2: Add clock gating exiting flow by system resume Artur Petrosyan
2021-04-13 9:30 ` Sergei Shtylyov
2021-04-13 7:37 ` [PATCH v2 12/12] usb: dwc2: Add exit clock gating before removing driver Artur Petrosyan
[not found] ` <20210413073600.57846A0094@mailhost.synopsys.com>
2021-04-13 8:03 ` [PATCH v2 00/12] usb: dwc2: Add clock gating support Artur Petrosyan
2021-04-13 10:26 ` Greg Kroah-Hartman
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