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phy: mapphone-mdm6600: Fix timeouts by adding wake-up handling

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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: 5d1ebbda03 ("phy: mapphone-mdm6600: Add USB PHY driver for MDM6600 on Droid 4")
Cc: Marcel Partap <[email protected]>
Cc: Merlijn Wajer <[email protected]>
Cc: Michael Scott <[email protected]>
Cc: NeKit <[email protected]>
Cc: Pavel Machek <[email protected]>
Cc: Sebastian Reichel <[email protected]>
Signed-off-by: Tony Lindgren <[email protected]>
Signed-off-by: Kishon Vijay Abraham I <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>
This commit is contained in:
Tony Lindgren 2019-09-15 13:15:52 -07:00 • committed by Greg Kroah-Hartman
commit 6cc80013ad
1 changed files with 16 additions and 2 deletions
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18
drivers/phy/motorola/phy-mapphone-mdm6600.c
View file

@ -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;
}