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| author | Tony Lindgren <tony@atomide.com> | 2019-09-15 13:15:52 -0700 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2020-03-12 13:00:27 +0100 |
| commit | 6cc80013ad3701efbf8338e9c34d682fb08750a3 (patch) | |
| tree | b21ccafa1a865bdc6b6b4ebec08ed17b3809e22e /drivers/phy | |
| parent | 362fbe8e9dd656d62e4a10b9c22956af148c1d7c (diff) | |
| download | linux-6cc80013ad3701efbf8338e9c34d682fb08750a3.tar.gz linux-6cc80013ad3701efbf8338e9c34d682fb08750a3.tar.bz2 linux-6cc80013ad3701efbf8338e9c34d682fb08750a3.zip | |
phy: mapphone-mdm6600: Fix timeouts by adding wake-up handling
commit be4e3c737eebd75815633f4b8fd766defaf0f1fc upstream.
We have an interrupt handler for the wake-up GPIO pin, but we're missing
the code to wake-up the system. This can cause timeouts receiving data
for the UART that shares the wake-up GPIO pin with the USB PHY.
All we need to do is just wake the system and kick the autosuspend
timeout to fix the issue.
Fixes: 5d1ebbda0318 ("phy: mapphone-mdm6600: Add USB PHY driver for MDM6600 on Droid 4")
Cc: Marcel Partap <mpartap@gmx.net>
Cc: Merlijn Wajer <merlijn@wizzup.org>
Cc: Michael Scott <hashcode0f@gmail.com>
Cc: NeKit <nekit1000@gmail.com>
Cc: Pavel Machek <pavel@ucw.cz>
Cc: Sebastian Reichel <sre@kernel.org>
Signed-off-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/phy')
| -rw-r--r-- | drivers/phy/motorola/phy-mapphone-mdm6600.c | 18 |
1 files changed, 16 insertions, 2 deletions
diff --git a/drivers/phy/motorola/phy-mapphone-mdm6600.c b/drivers/phy/motorola/phy-mapphone-mdm6600.c index f20524f0c21d..eba69ade899c 100644 --- a/drivers/phy/motorola/phy-mapphone-mdm6600.c +++ b/drivers/phy/motorola/phy-mapphone-mdm6600.c @@ -243,10 +243,24 @@ static irqreturn_t phy_mdm6600_wakeirq_thread(int irq, void *data) { struct phy_mdm6600 *ddata = data; struct gpio_desc *mode_gpio1; + int error, wakeup; mode_gpio1 = ddata->mode_gpios->desc[PHY_MDM6600_MODE1]; - dev_dbg(ddata->dev, "OOB wake on mode_gpio1: %i\n", - gpiod_get_value(mode_gpio1)); + wakeup = gpiod_get_value(mode_gpio1); + if (!wakeup) + return IRQ_NONE; + + dev_dbg(ddata->dev, "OOB wake on mode_gpio1: %i\n", wakeup); + error = pm_runtime_get_sync(ddata->dev); + if (error < 0) { + pm_runtime_put_noidle(ddata->dev); + + return IRQ_NONE; + } + + /* Just wake-up and kick the autosuspend timer */ + pm_runtime_mark_last_busy(ddata->dev); + pm_runtime_put_autosuspend(ddata->dev); return IRQ_HANDLED; } |