From: marex@denx.de (Marek Vasut)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH 05/12] usb: phy-mxs: Add implementation of nofity_suspend and notify_resume
Date: Sat, 12 Oct 2013 11:42:06 +0200 [thread overview]
Message-ID: <201310121142.07174.marex@denx.de> (raw)
In-Reply-To: <1381568986-19802-6-git-send-email-peter.chen@freescale.com>
Dear Peter Chen,
> Add notify_suspend and notify_resume according to different SoCs.
>
> Signed-off-by: Peter Chen <peter.chen@freescale.com>
> ---
> drivers/usb/phy/phy-mxs-usb.c | 73
> +++++++++++++++++++++++++++++++++++++++++ 1 files changed, 73
> insertions(+), 0 deletions(-)
>
> diff --git a/drivers/usb/phy/phy-mxs-usb.c b/drivers/usb/phy/phy-mxs-usb.c
> index e0b0de0..8661dae 100644
> --- a/drivers/usb/phy/phy-mxs-usb.c
> +++ b/drivers/usb/phy/phy-mxs-usb.c
> @@ -197,6 +197,78 @@ static int mxs_phy_on_disconnect(struct usb_phy *phy,
> return 0;
> }
>
> +static int mxs_phy_on_suspend_workaround(struct usb_phy *phy,
> + enum usb_device_speed speed)
> +{
> + dev_dbg(phy->dev, "%s speed device has suspended\n",
> + (speed == USB_SPEED_HIGH) ? "high" : "non-high");
HS : FS/LS you mean?
> +
> + /* delay 4ms to wait bus entering idle */
> + usleep_range(4000, 5000);
> +
> + /*
> + * Workaround for wakeup signal between portsc.suspendM
> + * and PHY enters low power mode.
> + */
> + writel_relaxed(0xffffffff, phy->io_priv + HW_USBPHY_PWD);
> + writel_relaxed(0, phy->io_priv + HW_USBPHY_PWD);
> +
> + if (speed == USB_SPEED_HIGH)
> + writel_relaxed(BM_USBPHY_CTRL_ENHOSTDISCONDETECT,
> + phy->io_priv + HW_USBPHY_CTRL_CLR);
> +
> + return 0;
> +}
[...]
> +/*
> + * For mxs PHY, there are two PHY issues related to suspend/resume.
> + * For mx23 and mx28, both of two issues are existed.
> + * For mx6q and mx6dl, only one issue is existed.
> + * For mx6 sololite, none issue is existed.
> + */
> +static void mxs_phy_workaround(struct mxs_phy *mxs_phy)
> +{
> + if (is_mx23_phy(mxs_phy)) {
This is_mx23_phy() returns 1 for mx28 too? It's not too clear, not even from the
comment above, a short comment here would help for sure.
> + mxs_phy->phy.notify_suspend = mxs_phy_on_suspend_workaround;
> + mxs_phy->phy.notify_resume = mxs_phy_on_resume;
> + } else if (is_mx6q_phy(mxs_phy)) {
> + mxs_phy->phy.notify_suspend = mxs_phy_on_suspend;
> + mxs_phy->phy.notify_resume = mxs_phy_on_resume;
> + }
> +}
> +
> static int mxs_phy_probe(struct platform_device *pdev)
> {
> struct resource *res;
> @@ -257,6 +329,7 @@ static int mxs_phy_probe(struct platform_device *pdev)
>
> mxs_phy->clk = clk;
> mxs_phy->devtype = pdev->id_entry->driver_data;
> + mxs_phy_workaround(mxs_phy);
>
> platform_set_drvdata(pdev, &mxs_phy->phy);
next prev parent reply other threads:[~2013-10-12 9:42 UTC|newest]
Thread overview: 32+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-10-12 9:09 [PATCH 00/12] Add power management support for MXS PHY Peter Chen
2013-10-12 9:09 ` [PATCH 01/12] usb: phy-mxs: Add auto clock and power setting Peter Chen
2013-10-12 9:09 ` [PATCH 02/12] usb: phy-mxs: Enable IC fixes for mx6 SoC serial Peter Chen
2013-10-12 9:38 ` Marek Vasut
2013-10-14 1:31 ` Peter Chen
2013-10-14 2:07 ` Marek Vasut
2013-10-14 1:58 ` Peter Chen
2013-10-14 9:09 ` Shawn Guo
2013-10-14 9:09 ` Peter Chen
2013-10-14 9:29 ` Shawn Guo
2013-10-14 9:16 ` Peter Chen
2013-10-12 9:09 ` [PATCH 03/12] usb: phy-mxs: Add anatop regmap Peter Chen
2013-10-12 9:09 ` [PATCH 04/12] usb: phy: add notify suspend and resume callback Peter Chen
2013-10-12 9:09 ` [PATCH 05/12] usb: phy-mxs: Add implementation of nofity_suspend and notify_resume Peter Chen
2013-10-12 9:42 ` Marek Vasut [this message]
2013-10-14 1:36 ` Peter Chen
2013-10-14 2:08 ` Marek Vasut
2013-10-12 9:09 ` [PATCH 06/12] usb: phy: Add set_wakeup API Peter Chen
2013-10-12 9:09 ` [PATCH 07/12] usb: phy-mxs: Add implementation of set_wakeup Peter Chen
2013-10-12 9:44 ` Marek Vasut
2013-10-14 1:41 ` Peter Chen
2013-10-12 9:09 ` [PATCH 08/12] usb: phy-mxs: Add system suspend/resume API Peter Chen
2013-10-12 9:09 ` [PATCH 09/12] usb: phy-mxs: update binding for adding anatop phandle Peter Chen
2013-10-14 9:22 ` Shawn Guo
2013-10-14 9:10 ` Peter Chen
2013-10-12 9:09 ` [PATCH 10/12] ARM: dts: imx6: add anatop phandle for usbphy Peter Chen
2013-10-12 9:09 ` [PATCH 11/12] usb: phy-mxs: update binding for adding disconnect line property Peter Chen
2013-10-12 9:47 ` Marek Vasut
2013-10-14 1:44 ` Peter Chen
2013-10-12 15:05 ` Thomas Petazzoni
2013-10-14 1:45 ` Peter Chen
2013-10-12 9:09 ` [PATCH 12/12] ARM: dts: imx6: Add disconnect_line_without_vbus property for usbphy Peter Chen
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