diff options
| author | Ivan T. Ivanov <iivanov@mm-sol.com> | 2014-04-28 16:34:21 +0300 |
|---|---|---|
| committer | Felipe Balbi <balbi@ti.com> | 2014-04-30 11:29:58 -0500 |
| commit | 349907c262ad5e698c24565658ae489fb69fee53 (patch) | |
| tree | aea76d5ae3d5f5e64006b12deb2e5f4c53b941d4 /drivers/usb/phy | |
| parent | 30bf8667cef5655ddfaedf043f13d03606844213 (diff) | |
| download | linux-349907c262ad5e698c24565658ae489fb69fee53.tar.bz2 | |
usb: phy: msm: Handle disconnect events
Put the transceiver in non-driving mode. Otherwise host
may not detect soft-disconnection.
Signed-off-by: Ivan T. Ivanov <iivanov@mm-sol.com>
Cc: Pavankumar Kondeti <pkondeti@codeaurora.org>
Signed-off-by: Felipe Balbi <balbi@ti.com>
Diffstat (limited to 'drivers/usb/phy')
| -rw-r--r-- | drivers/usb/phy/phy-msm-usb.c | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/drivers/usb/phy/phy-msm-usb.c b/drivers/usb/phy/phy-msm-usb.c index 9437bcf8c367..366527ecbdd1 100644 --- a/drivers/usb/phy/phy-msm-usb.c +++ b/drivers/usb/phy/phy-msm-usb.c @@ -235,6 +235,23 @@ static void ulpi_init(struct msm_otg *motg) } } +static int msm_phy_notify_disconnect(struct usb_phy *phy, + enum usb_device_speed speed) +{ + int val; + + /* + * Put the transceiver in non-driving mode. Otherwise host + * may not detect soft-disconnection. + */ + val = ulpi_read(phy, ULPI_FUNC_CTRL); + val &= ~ULPI_FUNC_CTRL_OPMODE_MASK; + val |= ULPI_FUNC_CTRL_OPMODE_NONDRIVING; + ulpi_write(phy, val, ULPI_FUNC_CTRL); + + return 0; +} + static int msm_otg_link_clk_reset(struct msm_otg *motg, bool assert) { int ret; @@ -1626,6 +1643,7 @@ static int msm_otg_probe(struct platform_device *pdev) phy->init = msm_phy_init; phy->set_power = msm_otg_set_power; + phy->notify_disconnect = msm_phy_notify_disconnect; phy->io_ops = &msm_otg_io_ops; |