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gpiolib: acpi: Extract acpi_request_own_gpiod() helper 

It appears that we are using similar code excerpts for ACPI OpRegion
and event handling. Deduplicate those excerpts by extracting a new
acpi_request_own_gpiod() helper.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Reviewed-by: Mika Westerberg <mika.westerberg@linux.intel.com>
This commit is contained in:
Andy Shevchenko 2020-11-11 23:35:33 +02:00
parent bca404802c
commit 2e2b496ceb
1 changed files with 24 additions and 22 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

46
drivers/gpio/gpiolib-acpi.c
View File

@ -244,6 +244,28 @@ acpi_gpio_to_gpiod_flags(const struct acpi_resource_gpio *agpio, int polarity)
return GPIOD_ASIS;
}
static struct gpio_desc *acpi_request_own_gpiod(struct gpio_chip *chip,
struct acpi_resource_gpio *agpio,
unsigned int index,
const char *label)
{
int polarity = GPIO_ACTIVE_HIGH;
enum gpiod_flags flags = acpi_gpio_to_gpiod_flags(agpio, polarity);
unsigned int pin = agpio->pin_table[index];
struct gpio_desc *desc;
int ret;
desc = gpiochip_request_own_desc(chip, pin, label, polarity, flags);
if (IS_ERR(desc))
return desc;
ret = gpio_set_debounce_timeout(desc, agpio->debounce_timeout);
if (ret)
gpiochip_free_own_desc(desc);
return ret ? ERR_PTR(ret) : desc;
}
static bool acpi_gpio_in_ignore_list(const char *controller_in, int pin_in)
{
const char *controller, *pin_str;
@ -329,8 +351,7 @@ static acpi_status acpi_gpiochip_alloc_event(struct acpi_resource *ares,
if (!handler)
return AE_OK;
desc = gpiochip_request_own_desc(chip, pin, "ACPI:Event",
GPIO_ACTIVE_HIGH, GPIOD_IN);
desc = acpi_request_own_gpiod(chip, agpio, 0, "ACPI:Event");
if (IS_ERR(desc)) {
dev_err(chip->parent,
"Failed to request GPIO for pin 0x%04X, err %ld\n",
@ -338,10 +359,6 @@ static acpi_status acpi_gpiochip_alloc_event(struct acpi_resource *ares,
return AE_OK;
}
ret = gpio_set_debounce_timeout(desc, agpio->debounce_timeout);
if (ret)
goto fail_free_desc;
ret = gpiochip_lock_as_irq(chip, pin);
if (ret) {
dev_err(chip->parent,
@ -1061,28 +1078,13 @@ acpi_gpio_adr_space_handler(u32 function, acpi_physical_address address,
}
if (!found) {
int polarity = GPIO_ACTIVE_HIGH;
enum gpiod_flags flags = acpi_gpio_to_gpiod_flags(agpio, polarity);
const char *label = "ACPI:OpRegion";
int ret;
desc = gpiochip_request_own_desc(chip, pin, label,
polarity,
flags);
desc = acpi_request_own_gpiod(chip, agpio, i, "ACPI:OpRegion");
if (IS_ERR(desc)) {
mutex_unlock(&achip->conn_lock);
status = AE_ERROR;
goto out;
}
ret = gpio_set_debounce_timeout(desc, agpio->debounce_timeout);
if (ret) {
gpiochip_free_own_desc(desc);
mutex_unlock(&achip->conn_lock);
status = AE_ERROR;
goto out;
}
conn = kzalloc(sizeof(*conn), GFP_KERNEL);
if (!conn) {
gpiochip_free_own_desc(desc);