Re: [PATCH] gpio: wcove: Use irqchip template

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Hi,

On 7/17/20 5:19 PM, Linus Walleij wrote:
This makes the driver use the irqchip template to assign
properties to the gpio_irq_chip instead of using the
explicit calls to gpiochip_irqchip_add_nested() and
gpiochip_set_nested_irqchip(). The irqchip is instead
added while adding the gpiochip.

Cc: Bin Gao <bin.gao@xxxxxxxxxxxxxxx>
Cc: Andy Shevchenko <andriy.shevchenko@xxxxxxxxxxxxxxx>
Cc: Hans de Goede <hdegoede@xxxxxxxxxx>
Signed-off-by: Linus Walleij <linus.walleij@xxxxxxxxxx>
---
Same notices as on the Crystalcove: this one I actually
managed to compiletest properly.

I've given this patch a test-run on a machine with the
Whiskey Cove PMIC and with the caveat that I've not
actually tested the GPIO IRQ functionality, since that
does not seem to be used on any machines, I see no adverse
side effects from this patch, so it is:

Tested-by: Hans de Goede <hdegoede@xxxxxxxxxx>

Regards,

Hans




---
  drivers/gpio/gpio-wcove.c | 30 ++++++++++++++++--------------
  1 file changed, 16 insertions(+), 14 deletions(-)

diff --git a/drivers/gpio/gpio-wcove.c b/drivers/gpio/gpio-wcove.c
index 8b481b3c1ebe..135645096575 100644
--- a/drivers/gpio/gpio-wcove.c
+++ b/drivers/gpio/gpio-wcove.c
@@ -400,6 +400,7 @@ static int wcove_gpio_probe(struct platform_device *pdev)
  	struct wcove_gpio *wg;
  	int virq, ret, irq;
  	struct device *dev;
+	struct gpio_irq_chip *girq;
/*
  	 * This gpio platform device is created by a mfd device (see
@@ -442,19 +443,6 @@ static int wcove_gpio_probe(struct platform_device *pdev)
  	wg->dev = dev;
  	wg->regmap = pmic->regmap;
- ret = devm_gpiochip_add_data(dev, &wg->chip, wg);
-	if (ret) {
-		dev_err(dev, "Failed to add gpiochip: %d\n", ret);
-		return ret;
-	}
-
-	ret = gpiochip_irqchip_add_nested(&wg->chip, &wcove_irqchip, 0,
-					  handle_simple_irq, IRQ_TYPE_NONE);
-	if (ret) {
-		dev_err(dev, "Failed to add irqchip: %d\n", ret);
-		return ret;
-	}
-
  	virq = regmap_irq_get_virq(wg->regmap_irq_chip, irq);
  	if (virq < 0) {
  		dev_err(dev, "Failed to get virq by irq %d\n", irq);
@@ -468,7 +456,21 @@ static int wcove_gpio_probe(struct platform_device *pdev)
  		return ret;
  	}
- gpiochip_set_nested_irqchip(&wg->chip, &wcove_irqchip, virq);
+	girq = &wg->chip.irq;
+	girq->chip = &wcove_irqchip;
+	/* This will let us handle the parent IRQ in the driver */
+	girq->parent_handler = NULL;
+	girq->num_parents = 0;
+	girq->parents = NULL;
+	girq->default_type = IRQ_TYPE_NONE;
+	girq->handler = handle_simple_irq;
+	girq->threaded = true;
+
+	ret = devm_gpiochip_add_data(dev, &wg->chip, wg);
+	if (ret) {
+		dev_err(dev, "Failed to add gpiochip: %d\n", ret);
+		return ret;
+	}
/* Enable GPIO0 interrupts */
  	ret = regmap_update_bits(wg->regmap, IRQ_MASK_BASE, GPIO_IRQ0_MASK,





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