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authorAndy Shevchenko <andriy.shevchenko@linux.intel.com>2020-11-12 00:35:33 +0300
committerAndy Shevchenko <andriy.shevchenko@linux.intel.com>2020-11-16 15:14:35 +0300
commit2e2b496cebefb9514fc04adcb4658df4f82ceb0d (patch)
treeb718b55a1a5b3a1eb41e57fc6b6c947928a69b95 /drivers/gpio/gpiolib-acpi.c
parentbca404802ceade19d7649a840178c415316814cc (diff)
downloadlinux-2e2b496cebefb9514fc04adcb4658df4f82ceb0d.tar.xz
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>
Diffstat (limited to 'drivers/gpio/gpiolib-acpi.c')
-rw-r--r--drivers/gpio/gpiolib-acpi.c46
1 files changed, 24 insertions, 22 deletions
diff --git a/drivers/gpio/gpiolib-acpi.c b/drivers/gpio/gpiolib-acpi.c
index 644067cc0f81..c46fd51007d0 100644
--- a/drivers/gpio/gpiolib-acpi.c
+++ b/drivers/gpio/gpiolib-acpi.c
@@ -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);