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>
Subject: [PATCH v2 08/12] usb: dwc2: Update exit clock gating when port is resumed
Date: Tue, 13 Apr 2021 11:37:00 +0400 [thread overview]
Message-ID: <20210413073701.367E0A022E@mailhost.synopsys.com> (raw)
In-Reply-To: <cover.1618297800.git.Arthur.Petrosyan@synopsys.com>
Updates the implementation of exiting clock gating mode
when core receives port resume.
Instead of setting the required bit fields of the registers
inline, called the "dwc2_host_exit_clock_gating()" function.
Signed-off-by: Artur Petrosyan <Arthur.Petrosyan@synopsys.com>
---
Changes in v2:
- None
drivers/usb/dwc2/hcd.c | 29 ++++-------------------------
1 file changed, 4 insertions(+), 25 deletions(-)
diff --git a/drivers/usb/dwc2/hcd.c b/drivers/usb/dwc2/hcd.c
index e1225fe6c61a..8a42675ab94e 100644
--- a/drivers/usb/dwc2/hcd.c
+++ b/drivers/usb/dwc2/hcd.c
@@ -3359,8 +3359,6 @@ int dwc2_port_suspend(struct dwc2_hsotg *hsotg, u16 windex)
int dwc2_port_resume(struct dwc2_hsotg *hsotg)
{
unsigned long flags;
- u32 hprt0;
- u32 pcgctl;
int ret = 0;
spin_lock_irqsave(&hsotg->lock, flags);
@@ -3374,33 +3372,14 @@ int dwc2_port_resume(struct dwc2_hsotg *hsotg)
break;
case DWC2_POWER_DOWN_PARAM_HIBERNATION:
case DWC2_POWER_DOWN_PARAM_NONE:
- default:
/*
- * If power_down is supported, Phy clock is already resumed
- * after registers restore.
+ * If not hibernation nor partial power down are supported,
+ * port resume is done using the clock gating programming flow.
*/
- if (!hsotg->params.power_down) {
- pcgctl = dwc2_readl(hsotg, PCGCTL);
- pcgctl &= ~PCGCTL_STOPPCLK;
- dwc2_writel(hsotg, pcgctl, PCGCTL);
- spin_unlock_irqrestore(&hsotg->lock, flags);
- msleep(20);
- spin_lock_irqsave(&hsotg->lock, flags);
- }
-
- hprt0 = dwc2_read_hprt0(hsotg);
- hprt0 |= HPRT0_RES;
- hprt0 &= ~HPRT0_SUSP;
- dwc2_writel(hsotg, hprt0, HPRT0);
spin_unlock_irqrestore(&hsotg->lock, flags);
-
- msleep(USB_RESUME_TIMEOUT);
-
+ dwc2_host_exit_clock_gating(hsotg, 0);
spin_lock_irqsave(&hsotg->lock, flags);
- hprt0 = dwc2_read_hprt0(hsotg);
- hprt0 &= ~(HPRT0_RES | HPRT0_SUSP);
- dwc2_writel(hsotg, hprt0, HPRT0);
- hsotg->bus_suspended = false;
+ break;
}
spin_unlock_irqrestore(&hsotg->lock, flags);
--
2.25.1
next prev parent reply other threads:[~2021-04-13 7:37 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 ` [PATCH v2 04/12] usb: dwc2: Add exit clock gating from wakeup interrupt Artur Petrosyan
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 ` Artur Petrosyan [this message]
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
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20210413073701.367E0A022E@mailhost.synopsys.com \
--to=arthur.petrosyan@synopsys.com \
--cc=John.Youn@synopsys.com \
--cc=Minas.Harutyunyan@synopsys.com \
--cc=balbi@kernel.org \
--cc=gregkh@linuxfoundation.org \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-usb@vger.kernel.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox
Powered by JetHome