diff options
| author | Vijayavardhan Vennapusa <vvreddy@codeaurora.org> | 2017-01-03 12:25:36 +0530 |
|---|---|---|
| committer | Vijayavardhan Vennapusa <vvreddy@codeaurora.org> | 2017-01-03 17:01:57 +0530 |
| commit | 4ff07c149c23776d7c62a04b0d02271cf929cdc9 (patch) | |
| tree | 019bcac43ec0b9ed1da6a049a306a5f0487a29e7 /drivers/usb | |
| parent | 2f817b68f06ed866aa2c4cc35b2e4293aeb1ef99 (diff) | |
usb: phy: qusb2: Enable phy auto-resume
phy auto-resume allows phy to automatically drive bus resume right
after device driving bus resume for at least 1ms due to remote wake up,
before host XHCI driver gets a chance to drive bus resume.
Change-Id: Ifbd2d8212fe5ed1bdad32418300ac615091f0226
Signed-off-by: Vijayavardhan Vennapusa <vvreddy@codeaurora.org>
Diffstat (limited to 'drivers/usb')
| -rw-r--r-- | drivers/usb/phy/phy-msm-qusb.c | 19 |
1 files changed, 18 insertions, 1 deletions
diff --git a/drivers/usb/phy/phy-msm-qusb.c b/drivers/usb/phy/phy-msm-qusb.c index 09a61acceb81..170cbf0a853f 100644 --- a/drivers/usb/phy/phy-msm-qusb.c +++ b/drivers/usb/phy/phy-msm-qusb.c @@ -1,5 +1,5 @@ /* - * Copyright (c) 2014-2016, The Linux Foundation. All rights reserved. + * Copyright (c) 2014-2017, The Linux Foundation. All rights reserved. * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License version 2 and @@ -47,6 +47,8 @@ #define FREEZIO_N BIT(1) #define POWER_DOWN BIT(0) +#define QUSB2PHY_PORT_TEST_CTRL 0xB8 + #define QUSB2PHY_PWR_CTRL1 0x210 #define PWR_CTRL1_CLAMP_N_EN BIT(1) #define PWR_CTRL1_POWR_DOWN BIT(0) @@ -688,6 +690,21 @@ static int qusb_phy_set_suspend(struct usb_phy *phy, int suspend) writel_relaxed(intr_mask, qphy->base + QUSB2PHY_PORT_INTR_CTRL); + /* enable phy auto-resume */ + writel_relaxed(0x0C, + qphy->base + QUSB2PHY_PORT_TEST_CTRL); + /* flush the previous write before next write */ + wmb(); + writel_relaxed(0x04, + qphy->base + QUSB2PHY_PORT_TEST_CTRL); + + + dev_dbg(phy->dev, "%s: intr_mask = %x\n", + __func__, intr_mask); + + /* Makes sure that above write goes through */ + wmb(); + qusb_phy_enable_clocks(qphy, false); } else { /* Disconnect case */ /* Disable all interrupts */ |