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MLK-11340-27 usb: phy-mxs: Add implementation of nofity_suspend{resume} 

Implementation of notify_suspend and notify_resume will be different
according to mxs_phy_data->flags.

Signed-off-by: Peter Chen <peter.chen@freescale.com>
(cherry picked from commit d1ce766d9aabdfb823131d38056ff67c94e7e20a)
5.4-rM2-2.2.x-imx-squashed
Peter Chen 2013-09-18 13:57:59 +08:00 committed by Dong Aisheng
parent 9b9596c733
commit d03a83b7bb
1 changed files with 47 additions and 1 deletions
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48
drivers/usb/phy/phy-mxs-usb.c
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@ -1,6 +1,6 @@
// SPDX-License-Identifier: GPL-2.0+
/*
* Copyright 2012-2014 Freescale Semiconductor, Inc.
* Copyright 2012-2015 Freescale Semiconductor, Inc.
* Copyright (C) 2012 Marek Vasut <marex@denx.de>
* on behalf of DENX Software Engineering GmbH
*/
@ -708,6 +708,48 @@ static enum usb_charger_type mxs_phy_charger_detect(struct usb_phy *phy)
return chgr_type;
}
static int mxs_phy_on_suspend(struct usb_phy *phy,
enum usb_device_speed speed)
{
struct mxs_phy *mxs_phy = to_mxs_phy(phy);
dev_dbg(phy->dev, "%s device has suspended\n",
(speed == USB_SPEED_HIGH) ? "HS" : "FS/LS");
/* delay 4ms to wait bus entering idle */
usleep_range(4000, 5000);
if (mxs_phy->data->flags & MXS_PHY_ABNORMAL_IN_SUSPEND) {
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;
}
/*
* The resume signal must be finished here.
*/
static int mxs_phy_on_resume(struct usb_phy *phy,
enum usb_device_speed speed)
{
dev_dbg(phy->dev, "%s device has resumed\n",
(speed == USB_SPEED_HIGH) ? "HS" : "FS/LS");
if (speed == USB_SPEED_HIGH) {
/* Make sure the device has switched to High-Speed mode */
udelay(500);
writel_relaxed(BM_USBPHY_CTRL_ENHOSTDISCONDETECT,
phy->io_priv + HW_USBPHY_CTRL_SET);
}
return 0;
}
static int mxs_phy_probe(struct platform_device *pdev)
{
struct resource *res;
@ -800,6 +842,10 @@ static int mxs_phy_probe(struct platform_device *pdev)
mxs_phy->clk = clk;
mxs_phy->data = of_id->data;
if (mxs_phy->data->flags & MXS_PHY_SENDING_SOF_TOO_FAST) {
mxs_phy->phy.notify_suspend = mxs_phy_on_suspend;
mxs_phy->phy.notify_resume = mxs_phy_on_resume;
}
platform_set_drvdata(pdev, mxs_phy);