diff options
Diffstat (limited to 'drivers/gpio/gpiolib-acpi.c')
| -rw-r--r-- | drivers/gpio/gpiolib-acpi.c | 24 |
1 files changed, 17 insertions, 7 deletions
diff --git a/drivers/gpio/gpiolib-acpi.c b/drivers/gpio/gpiolib-acpi.c index 259cf6ab969b..30d0baf7ddae 100644 --- a/drivers/gpio/gpiolib-acpi.c +++ b/drivers/gpio/gpiolib-acpi.c @@ -29,7 +29,7 @@ * @irq: Linux IRQ number for the event, for request_ / free_irq * @irqflags: flags to pass to request_irq when requesting the IRQ * @irq_is_wake: If the ACPI flags indicate the IRQ is a wakeup source - * @is_requested: True if request_irq has been done + * @irq_requested:True if request_irq has been done * @desc: gpio_desc for the GPIO pin for this event */ struct acpi_gpio_event { @@ -469,6 +469,9 @@ acpi_gpio_to_gpiod_flags(const struct acpi_resource_gpio *agpio) static int __acpi_gpio_update_gpiod_flags(enum gpiod_flags *flags, enum gpiod_flags update) { + const enum gpiod_flags mask = + GPIOD_FLAGS_BIT_DIR_SET | GPIOD_FLAGS_BIT_DIR_OUT | + GPIOD_FLAGS_BIT_DIR_VAL; int ret = 0; /* @@ -489,7 +492,7 @@ __acpi_gpio_update_gpiod_flags(enum gpiod_flags *flags, enum gpiod_flags update) if (((*flags & GPIOD_FLAGS_BIT_DIR_SET) && (diff & GPIOD_FLAGS_BIT_DIR_OUT)) || ((*flags & GPIOD_FLAGS_BIT_DIR_OUT) && (diff & GPIOD_FLAGS_BIT_DIR_VAL))) ret = -EINVAL; - *flags = update; + *flags = (*flags & ~mask) | (update & mask); } return ret; } @@ -530,17 +533,24 @@ static int acpi_populate_gpio_lookup(struct acpi_resource *ares, void *data) if (ares->type != ACPI_RESOURCE_TYPE_GPIO) return 1; - if (lookup->n++ == lookup->index && !lookup->desc) { + if (!lookup->desc) { const struct acpi_resource_gpio *agpio = &ares->data.gpio; - int pin_index = lookup->pin_index; + bool gpioint = agpio->connection_type == ACPI_RESOURCE_GPIO_TYPE_INT; + int pin_index; + if (lookup->info.quirks & ACPI_GPIO_QUIRK_ONLY_GPIOIO && gpioint) + lookup->index++; + + if (lookup->n++ != lookup->index) + return 1; + + pin_index = lookup->pin_index; if (pin_index >= agpio->pin_table_length) return 1; lookup->desc = acpi_get_gpiod(agpio->resource_source.string_ptr, agpio->pin_table[pin_index]); - lookup->info.gpioint = - agpio->connection_type == ACPI_RESOURCE_GPIO_TYPE_INT; + lookup->info.gpioint = gpioint; /* * Polarity and triggering are only specified for GpioInt @@ -892,7 +902,7 @@ acpi_gpio_adr_space_handler(u32 function, acpi_physical_address address, * event but only if the access here is ACPI_READ. In that * case we "borrow" the event GPIO instead. */ - if (!found && agpio->sharable == ACPI_SHARED && + if (!found && agpio->shareable == ACPI_SHARED && function == ACPI_READ) { struct acpi_gpio_event *event; |