path: root/drivers/extcon/extcon-intel-int3496.c
diff options
authorHans de Goede <hdegoede@redhat.com>2017-03-13 12:28:34 +0100
committerChanwoo Choi <cw00.choi@samsung.com>2017-03-22 18:29:48 +0900
commit70216fd937fea79c20705400540fa48f86ddf1c5 (patch)
treedf18bb15ee80fbaf122229abcb5afd23c7c31e3a /drivers/extcon/extcon-intel-int3496.c
parent408c5b41d215b317ab58c98b959454407ee4a53d (diff)
extcon: int3496: Set the id pin to direction-input if necessary
With the new more strict ACPI gpio code the dsdt's IoRestriction flags are honored on gpiod_get, but in some dsdt's it is wrong, so explicitly call gpiod_direction_input on the id gpio if necessary. This fixes the following errors when the int3496 code is used together with the new more strict ACPI gpio code: [ 2382.484415] gpio gpiochip1: (INT33FF:01): gpiochip_lock_as_irq: tried to flag a GPIO set as output for IRQ [ 2382.484425] gpio gpiochip1: (INT33FF:01): unable to lock HW IRQ 3 for IRQ [ 2382.484429] genirq: Failed to request resources for INT3496:00 (irq 174) on irqchip chv-gpio [ 2382.484518] intel-int3496 INT3496:00: can't request IRQ for USB ID GPIO: -22 [ 2382.500359] intel-int3496: probe of INT3496:00 failed with error -22 Signed-off-by: Hans de Goede <hdegoede@redhat.com> Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com> Signed-off-by: Chanwoo Choi <cw00.choi@samsung.com>
Diffstat (limited to 'drivers/extcon/extcon-intel-int3496.c')
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/extcon/extcon-intel-int3496.c b/drivers/extcon/extcon-intel-int3496.c
index 00f0e60a00ce..9d17984bbbd4 100644
--- a/drivers/extcon/extcon-intel-int3496.c
+++ b/drivers/extcon/extcon-intel-int3496.c
@@ -113,6 +113,9 @@ static int int3496_probe(struct platform_device *pdev)
ret = PTR_ERR(data->gpio_usb_id);
dev_err(dev, "can't request USB ID GPIO: %d\n", ret);
return ret;
+ } else if (gpiod_get_direction(data->gpio_usb_id) != GPIOF_DIR_IN) {
+ dev_warn(dev, FW_BUG "USB ID GPIO not in input mode, fixing\n");
+ gpiod_direction_input(data->gpio_usb_id);
data->usb_id_irq = gpiod_to_irq(data->gpio_usb_id);

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