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path: root/drivers/gpio/gpiolib-acpi.c
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Diffstat (limited to 'drivers/gpio/gpiolib-acpi.c')
-rw-r--r--drivers/gpio/gpiolib-acpi.c80
1 files changed, 52 insertions, 28 deletions
diff --git a/drivers/gpio/gpiolib-acpi.c b/drivers/gpio/gpiolib-acpi.c
index 7ab7bc3c9..540cbc88c 100644
--- a/drivers/gpio/gpiolib-acpi.c
+++ b/drivers/gpio/gpiolib-acpi.c
@@ -51,10 +51,10 @@ struct acpi_gpio_chip {
static int acpi_gpiochip_find(struct gpio_chip *gc, void *data)
{
- if (!gc->dev)
+ if (!gc->parent)
return false;
- return ACPI_HANDLE(gc->dev) == data;
+ return ACPI_HANDLE(gc->parent) == data;
}
#ifdef CONFIG_PINCTRL
@@ -184,7 +184,7 @@ static acpi_status acpi_gpiochip_request_interrupt(struct acpi_resource *ares,
if (agpio->connection_type != ACPI_RESOURCE_GPIO_TYPE_INT)
return AE_OK;
- handle = ACPI_HANDLE(chip->dev);
+ handle = ACPI_HANDLE(chip->parent);
pin = agpio->pin_table[0];
if (pin <= 255) {
@@ -208,7 +208,7 @@ static acpi_status acpi_gpiochip_request_interrupt(struct acpi_resource *ares,
desc = gpiochip_request_own_desc(chip, pin, "ACPI:Event");
if (IS_ERR(desc)) {
- dev_err(chip->dev, "Failed to request GPIO\n");
+ dev_err(chip->parent, "Failed to request GPIO\n");
return AE_ERROR;
}
@@ -216,13 +216,13 @@ static acpi_status acpi_gpiochip_request_interrupt(struct acpi_resource *ares,
ret = gpiochip_lock_as_irq(chip, pin);
if (ret) {
- dev_err(chip->dev, "Failed to lock GPIO as interrupt\n");
+ dev_err(chip->parent, "Failed to lock GPIO as interrupt\n");
goto fail_free_desc;
}
irq = gpiod_to_irq(desc);
if (irq < 0) {
- dev_err(chip->dev, "Failed to translate GPIO to IRQ\n");
+ dev_err(chip->parent, "Failed to translate GPIO to IRQ\n");
goto fail_unlock_irq;
}
@@ -259,7 +259,8 @@ static acpi_status acpi_gpiochip_request_interrupt(struct acpi_resource *ares,
ret = request_threaded_irq(event->irq, NULL, handler, irqflags,
"ACPI:Event", event);
if (ret) {
- dev_err(chip->dev, "Failed to setup interrupt handler for %d\n",
+ dev_err(chip->parent,
+ "Failed to setup interrupt handler for %d\n",
event->irq);
goto fail_free_event;
}
@@ -293,10 +294,10 @@ void acpi_gpiochip_request_interrupts(struct gpio_chip *chip)
acpi_handle handle;
acpi_status status;
- if (!chip->dev || !chip->to_irq)
+ if (!chip->parent || !chip->to_irq)
return;
- handle = ACPI_HANDLE(chip->dev);
+ handle = ACPI_HANDLE(chip->parent);
if (!handle)
return;
@@ -323,10 +324,10 @@ void acpi_gpiochip_free_interrupts(struct gpio_chip *chip)
acpi_handle handle;
acpi_status status;
- if (!chip->dev || !chip->to_irq)
+ if (!chip->parent || !chip->to_irq)
return;
- handle = ACPI_HANDLE(chip->dev);
+ handle = ACPI_HANDLE(chip->parent);
if (!handle)
return;
@@ -417,10 +418,15 @@ static int acpi_find_gpio(struct acpi_resource *ares, void *data)
* ActiveLow is only specified for GpioInt resource. If
* GpioIo is used then the only way to set the flag is
* to use _DSD "gpios" property.
+ * Note: we expect here:
+ * - ACPI_ACTIVE_LOW == GPIO_ACTIVE_LOW
+ * - ACPI_ACTIVE_HIGH == GPIO_ACTIVE_HIGH
*/
- if (lookup->info.gpioint)
- lookup->info.active_low =
- agpio->polarity == ACPI_ACTIVE_LOW;
+ if (lookup->info.gpioint) {
+ lookup->info.polarity = agpio->polarity;
+ lookup->info.triggering = agpio->triggering;
+ }
+
}
return 1;
@@ -447,7 +453,7 @@ static int acpi_gpio_resource_lookup(struct acpi_gpio_lookup *lookup,
if (info) {
*info = lookup->info;
if (lookup->active_low)
- info->active_low = lookup->active_low;
+ info->polarity = lookup->active_low;
}
return 0;
}
@@ -595,6 +601,7 @@ struct gpio_desc *acpi_node_get_gpiod(struct fwnode_handle *fwnode,
int acpi_dev_gpio_irq_get(struct acpi_device *adev, int index)
{
int idx, i;
+ unsigned int irq_flags;
for (i = 0, idx = 0; idx <= index; i++) {
struct acpi_gpio_info info;
@@ -603,8 +610,23 @@ int acpi_dev_gpio_irq_get(struct acpi_device *adev, int index)
desc = acpi_get_gpiod_by_index(adev, NULL, i, &info);
if (IS_ERR(desc))
break;
- if (info.gpioint && idx++ == index)
- return gpiod_to_irq(desc);
+ if (info.gpioint && idx++ == index) {
+ int irq = gpiod_to_irq(desc);
+
+ if (irq < 0)
+ return irq;
+
+ irq_flags = acpi_dev_get_irq_type(info.triggering,
+ info.polarity);
+
+ /* Set type if specified and different than the current one */
+ if (irq_flags != IRQ_TYPE_NONE &&
+ irq_flags != irq_get_trigger_type(irq))
+ irq_set_irq_type(irq, irq_flags);
+
+ return irq;
+ }
+
}
return -ENOENT;
}
@@ -748,7 +770,7 @@ out:
static void acpi_gpiochip_request_regions(struct acpi_gpio_chip *achip)
{
struct gpio_chip *chip = achip->chip;
- acpi_handle handle = ACPI_HANDLE(chip->dev);
+ acpi_handle handle = ACPI_HANDLE(chip->parent);
acpi_status status;
INIT_LIST_HEAD(&achip->conns);
@@ -757,20 +779,22 @@ static void acpi_gpiochip_request_regions(struct acpi_gpio_chip *achip)
acpi_gpio_adr_space_handler,
NULL, achip);
if (ACPI_FAILURE(status))
- dev_err(chip->dev, "Failed to install GPIO OpRegion handler\n");
+ dev_err(chip->parent,
+ "Failed to install GPIO OpRegion handler\n");
}
static void acpi_gpiochip_free_regions(struct acpi_gpio_chip *achip)
{
struct gpio_chip *chip = achip->chip;
- acpi_handle handle = ACPI_HANDLE(chip->dev);
+ acpi_handle handle = ACPI_HANDLE(chip->parent);
struct acpi_gpio_connection *conn, *tmp;
acpi_status status;
status = acpi_remove_address_space_handler(handle, ACPI_ADR_SPACE_GPIO,
acpi_gpio_adr_space_handler);
if (ACPI_FAILURE(status)) {
- dev_err(chip->dev, "Failed to remove GPIO OpRegion handler\n");
+ dev_err(chip->parent,
+ "Failed to remove GPIO OpRegion handler\n");
return;
}
@@ -787,16 +811,16 @@ void acpi_gpiochip_add(struct gpio_chip *chip)
acpi_handle handle;
acpi_status status;
- if (!chip || !chip->dev)
+ if (!chip || !chip->parent)
return;
- handle = ACPI_HANDLE(chip->dev);
+ handle = ACPI_HANDLE(chip->parent);
if (!handle)
return;
acpi_gpio = kzalloc(sizeof(*acpi_gpio), GFP_KERNEL);
if (!acpi_gpio) {
- dev_err(chip->dev,
+ dev_err(chip->parent,
"Failed to allocate memory for ACPI GPIO chip\n");
return;
}
@@ -806,7 +830,7 @@ void acpi_gpiochip_add(struct gpio_chip *chip)
status = acpi_attach_data(handle, acpi_gpio_chip_dh, acpi_gpio);
if (ACPI_FAILURE(status)) {
- dev_err(chip->dev, "Failed to attach ACPI GPIO chip\n");
+ dev_err(chip->parent, "Failed to attach ACPI GPIO chip\n");
kfree(acpi_gpio);
return;
}
@@ -820,16 +844,16 @@ void acpi_gpiochip_remove(struct gpio_chip *chip)
acpi_handle handle;
acpi_status status;
- if (!chip || !chip->dev)
+ if (!chip || !chip->parent)
return;
- handle = ACPI_HANDLE(chip->dev);
+ handle = ACPI_HANDLE(chip->parent);
if (!handle)
return;
status = acpi_get_data(handle, acpi_gpio_chip_dh, (void **)&acpi_gpio);
if (ACPI_FAILURE(status)) {
- dev_warn(chip->dev, "Failed to retrieve ACPI GPIO chip\n");
+ dev_warn(chip->parent, "Failed to retrieve ACPI GPIO chip\n");
return;
}
generated by cgit v1.2.3-54-g00ecf (git 2.45.2) at 2024-11-05 11:01:52 +0000