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[media] media: rc: gpio-ir-recv: use gpiolib API

Browse source 
Gpiolib API is preferred way to access gpios.

Signed-off-by: Ladislav Michl <ladis@linux-mips.org>
Signed-off-by: Sean Young <sean@mess.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
This commit is contained in:
Ladislav Michl 2017-09-07 20:41:32 -03:00 committed by Mauro Carvalho Chehab
parent 5c95878f61
commit eed008e605
1 changed files with 21 additions and 38 deletions
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59
drivers/media/rc/gpio-ir-recv.c
View file

@ -26,29 +26,19 @@
struct gpio_rc_dev {
struct rc_dev *rcdev;
int gpio_nr;
bool active_low;
struct gpio_desc *gpiod;
int irq;
};
static irqreturn_t gpio_ir_recv_irq(int irq, void *dev_id)
{
int val;
struct gpio_rc_dev *gpio_dev = dev_id;
int gval;
int rc = 0;
gval = gpio_get_value(gpio_dev->gpio_nr);
val = gpiod_get_value(gpio_dev->gpiod);
if (val >= 0)
ir_raw_event_store_edge(gpio_dev->rcdev, val == 1);
if (gval < 0)
goto err_get_value;
if (gpio_dev->active_low)
gval = !gval;
rc = ir_raw_event_store_edge(gpio_dev->rcdev, gval == 1);
if (rc < 0)
goto err_get_value;
err_get_value:
return IRQ_HANDLED;
}
@ -57,7 +47,6 @@ static int gpio_ir_recv_probe(struct platform_device *pdev)
struct device *dev = &pdev->dev;
struct device_node *np = dev->of_node;
struct gpio_rc_dev *gpio_dev;
enum of_gpio_flags flags;
struct rc_dev *rcdev;
int rc;
@ -68,15 +57,17 @@ static int gpio_ir_recv_probe(struct platform_device *pdev)
if (!gpio_dev)
return -ENOMEM;
rc = of_get_gpio_flags(np, 0, &flags);
if (rc < 0) {
gpio_dev->gpiod = devm_gpiod_get(dev, NULL, GPIOD_IN);
if (IS_ERR(gpio_dev->gpiod)) {
rc = PTR_ERR(gpio_dev->gpiod);
/* Just try again if this happens */
if (rc != -EPROBE_DEFER)
dev_err(dev, "Failed to get gpio flags (%d)\n", rc);
dev_err(dev, "error getting gpio (%d)\n", rc);
return rc;
}
gpio_dev->gpio_nr = rc;
gpio_dev->active_low = (flags & OF_GPIO_ACTIVE_LOW);
gpio_dev->irq = gpiod_to_irq(gpio_dev->gpiod);
if (gpio_dev->irq < 0)
return gpio_dev->irq;
rcdev = devm_rc_allocate_device(dev, RC_DRIVER_IR_RAW);
if (!rcdev)
@ -101,11 +92,6 @@ static int gpio_ir_recv_probe(struct platform_device *pdev)
gpio_dev->rcdev = rcdev;
rc = devm_gpio_request_one(dev, gpio_dev->gpio_nr, GPIOF_DIR_IN,
"gpio-ir-recv");
if (rc < 0)
return rc;
rc = devm_rc_register_device(dev, rcdev);
if (rc < 0) {
dev_err(dev, "failed to register rc device (%d)\n", rc);
@ -114,8 +100,7 @@ static int gpio_ir_recv_probe(struct platform_device *pdev)
platform_set_drvdata(pdev, gpio_dev);
return devm_request_irq(dev, gpio_to_irq(gpio_dev->gpio_nr),
gpio_ir_recv_irq,
return devm_request_irq(dev, gpio_dev->irq, gpio_ir_recv_irq,
IRQF_TRIGGER_FALLING | IRQF_TRIGGER_RISING,
"gpio-ir-recv-irq", gpio_dev);
}
@ -123,26 +108,24 @@ static int gpio_ir_recv_probe(struct platform_device *pdev)
#ifdef CONFIG_PM
static int gpio_ir_recv_suspend(struct device *dev)
{
struct platform_device *pdev = to_platform_device(dev);
struct gpio_rc_dev *gpio_dev = platform_get_drvdata(pdev);
struct gpio_rc_dev *gpio_dev = dev_get_drvdata(dev);
if (device_may_wakeup(dev))
enable_irq_wake(gpio_to_irq(gpio_dev->gpio_nr));
enable_irq_wake(gpio_dev->irq);
else
disable_irq(gpio_to_irq(gpio_dev->gpio_nr));
disable_irq(gpio_dev->irq);
return 0;
}
static int gpio_ir_recv_resume(struct device *dev)
{
struct platform_device *pdev = to_platform_device(dev);
struct gpio_rc_dev *gpio_dev = platform_get_drvdata(pdev);
struct gpio_rc_dev *gpio_dev = dev_get_drvdata(dev);
if (device_may_wakeup(dev))
disable_irq_wake(gpio_to_irq(gpio_dev->gpio_nr));
disable_irq_wake(gpio_dev->irq);
else
enable_irq(gpio_to_irq(gpio_dev->gpio_nr));
enable_irq(gpio_dev->irq);
return 0;
}