linux-kernel - [PATCH 2/2] pinctrl: intel: Pass irqchip when adding gpiochip

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Date:   Thu,  9 Jan 2020 08:53:29 +0100
From:   Linus Walleij <linus.walleij@...aro.org>
To:     linux-kernel@...r.kernel.org, linux-gpio@...r.kernel.org
Cc:     Andy Shevchenko <andriy.shevchenko@...ux.intel.com>,
        Mika Westerberg <mika.westerberg@...ux.intel.com>,
        Mathias Nyman <mathias.nyman@...ux.intel.com>,
        Linus Walleij <linus.walleij@...aro.org>,
        Hans de Goede <hdegoede@...hat.com>
Subject: [PATCH 2/2] pinctrl: intel: Pass irqchip when adding gpiochip

We need to convert all old gpio irqchips to pass the irqchip
setup along when adding the gpio_chip. For more info see
drivers/gpio/TODO.

For chained irqchips this is a pretty straight-forward conversion.

Cc: Hans de Goede <hdegoede@...hat.com>
Signed-off-by: Linus Walleij <linus.walleij@...aro.org>
---
Please apply this to the Intel pinctrl tree when you are
happy with the result!
---
 drivers/pinctrl/intel/pinctrl-intel.c | 26 +++++++++++++-------------
 1 file changed, 13 insertions(+), 13 deletions(-)

diff --git a/drivers/pinctrl/intel/pinctrl-intel.c b/drivers/pinctrl/intel/pinctrl-intel.c
index b479bcf1e246..ffacd77861f7 100644
--- a/drivers/pinctrl/intel/pinctrl-intel.c
+++ b/drivers/pinctrl/intel/pinctrl-intel.c
@@ -1224,6 +1224,7 @@ static unsigned int intel_gpio_ngpio(const struct intel_pinctrl *pctrl)
 static int intel_gpio_probe(struct intel_pinctrl *pctrl, int irq)
 {
 	int ret;
+	struct gpio_irq_chip *girq;
 
 	pctrl->chip = intel_gpio_chip;
 
@@ -1244,16 +1245,9 @@ static int intel_gpio_probe(struct intel_pinctrl *pctrl, int irq)
 	pctrl->irqchip.irq_set_wake = intel_gpio_irq_wake;
 	pctrl->irqchip.flags = IRQCHIP_MASK_ON_SUSPEND;
 
-	ret = devm_gpiochip_add_data(pctrl->dev, &pctrl->chip, pctrl);
-	if (ret) {
-		dev_err(pctrl->dev, "failed to register gpiochip\n");
-		return ret;
-	}
-
 	/*
-	 * We need to request the interrupt here (instead of providing chip
-	 * to the irq directly) because on some platforms several GPIO
-	 * controllers share the same interrupt line.
+	 * On some platforms several GPIO controllers share the same interrupt
+	 * line.
 	 */
 	ret = devm_request_irq(pctrl->dev, irq, intel_gpio_irq,
 			       IRQF_SHARED | IRQF_NO_THREAD,
@@ -1263,14 +1257,20 @@ static int intel_gpio_probe(struct intel_pinctrl *pctrl, int irq)
 		return ret;
 	}
 
-	ret = gpiochip_irqchip_add(&pctrl->chip, &pctrl->irqchip, 0,
-				   handle_bad_irq, IRQ_TYPE_NONE);
+	girq = &pctrl->chip.irq;
+	girq->chip = &pctrl->irqchip;
+	/* This will let us handle the IRQ in the driver */
+	girq->parent_handler = NULL;
+	girq->num_parents = 0;
+	girq->default_type = IRQ_TYPE_NONE;
+	girq->handler = handle_bad_irq;
+
+	ret = devm_gpiochip_add_data(pctrl->dev, &pctrl->chip, pctrl);
 	if (ret) {
-		dev_err(pctrl->dev, "failed to add irqchip\n");
+		dev_err(pctrl->dev, "failed to register gpiochip\n");
 		return ret;
 	}
 
-	gpiochip_set_chained_irqchip(&pctrl->chip, &pctrl->irqchip, irq, NULL);
 	return 0;
 }
 
-- 
2.23.0