Merge tag 'pinctrl-v5.8-1' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl

Pull pin control updates from Linus Walleij:
 "This is the bulk of pin control changes for the v5.8 kernel cycle.

  It's just really boring this time. Zero core changes. Just linear
  development, cleanups and misc noncritical fixes. Some new drivers for
  very new Qualcomm and Intel chips.

  New drivers:

   - Intel Jasper Lake support.

   - NXP Freescale i.MX8DXL support.

   - Qualcomm SM8250 support.

   - Renesas R8A7742 SH-PFC support.

  Driver improvements:

   - Severe cleanup and modernization of the MCP23s08 driver.

   - Mediatek driver modularized.

   - Setting config supported in the Meson driver.

   - Wakeup support for the Broadcom BCM7211"

* tag 'pinctrl-v5.8-1' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl: (72 commits)
  pinctrl: sprd: Fix the incorrect pull-up definition
  pinctrl: pxa: pxa2xx: Remove 'pxa2xx_pinctrl_exit()' which is unused and broken
  pinctrl: freescale: imx: Use 'devm_of_iomap()' to avoid a resource leak in case of error in 'imx_pinctrl_probe()'
  pinctrl: freescale: imx: Fix an error handling path in 'imx_pinctrl_probe()'
  pinctrl: sirf: add missing put_device() call in sirfsoc_gpio_probe()
  pinctrl: imxl: Fix an error handling path in 'imx1_pinctrl_core_probe()'
  pinctrl: bcm2835: Add support for wake-up interrupts
  pinctrl: bcm2835: Match BCM7211 compatible string
  dt-bindings: pinctrl: Document optional BCM7211 wake-up interrupts
  dt-bindings: pinctrl: Document 7211 compatible for brcm, bcm2835-gpio.txt
  dt-bindings: pinctrl: stm32: Add missing interrupts property
  pinctrl: at91-pio4: Add COMPILE_TEST support
  pinctrl: Fix return value about devm_platform_ioremap_resource()
  MAINTAINERS: Renesas Pin Controllers are supported
  dt-bindings: pinctrl: ocelot: Add Sparx5 SoC support
  pinctrl: ocelot: Fix GPIO interrupt decoding on Jaguar2
  pinctrl: ocelot: Remove instance number from pin functions
  pinctrl: ocelot: Always register GPIO driver
  dt-bindings: pinctrl: rockchip: update example
  pinctrl: amd: Add ACPI dependency
  ...

2 files changed, 80 insertions, 2 deletions

diff --git a/drivers/pinctrl/bcm/pinctrl-bcm281xx.c b/drivers/pinctrl/bcm/pinctrl-bcm281xx.c
index f690fc5cd688..71e666178300 100644
--- a/drivers/pinctrl/bcm/pinctrl-bcm281xx.c
+++ b/drivers/pinctrl/bcm/pinctrl-bcm281xx.c
@@ -1406,7 +1406,7 @@ static int __init bcm281xx_pinctrl_probe(struct platform_device *pdev)
 	pdata->reg_base = devm_platform_ioremap_resource(pdev, 0);
 	if (IS_ERR(pdata->reg_base)) {
 		dev_err(&pdev->dev, "Failed to ioremap MEM resource\n");
-		return -ENODEV;
+		return PTR_ERR(pdata->reg_base);
 	}
 
 	/* Initialize the dynamic part of pinctrl_desc */
diff --git a/drivers/pinctrl/bcm/pinctrl-bcm2835.c b/drivers/pinctrl/bcm/pinctrl-bcm2835.c
index 06bd2b70af3c..1d21129f7751 100644
--- a/drivers/pinctrl/bcm/pinctrl-bcm2835.c
+++ b/drivers/pinctrl/bcm/pinctrl-bcm2835.c
@@ -19,6 +19,7 @@
 #include <linux/irq.h>
 #include <linux/irqdesc.h>
 #include <linux/init.h>
+#include <linux/interrupt.h>
 #include <linux/of_address.h>
 #include <linux/of.h>
 #include <linux/of_irq.h>
@@ -76,6 +77,7 @@
 struct bcm2835_pinctrl {
 	struct device *dev;
 	void __iomem *base;
+	int *wake_irq;
 
 	/* note: locking assumes each bank will have its own unsigned long */
 	unsigned long enabled_irq_map[BCM2835_NUM_BANKS];
@@ -435,6 +437,11 @@ static void bcm2835_gpio_irq_handler(struct irq_desc *desc)
 	chained_irq_exit(host_chip, desc);
 }
 
+static irqreturn_t bcm2835_gpio_wake_irq_handler(int irq, void *dev_id)
+{
+	return IRQ_HANDLED;
+}
+
 static inline void __bcm2835_gpio_irq_config(struct bcm2835_pinctrl *pc,
 	unsigned reg, unsigned offset, bool enable)
 {
@@ -634,6 +641,34 @@ static void bcm2835_gpio_irq_ack(struct irq_data *data)
 	bcm2835_gpio_set_bit(pc, GPEDS0, gpio);
 }
 
+static int bcm2835_gpio_irq_set_wake(struct irq_data *data, unsigned int on)
+{
+	struct gpio_chip *chip = irq_data_get_irq_chip_data(data);
+	struct bcm2835_pinctrl *pc = gpiochip_get_data(chip);
+	unsigned gpio = irqd_to_hwirq(data);
+	unsigned int irqgroup;
+	int ret = -EINVAL;
+
+	if (!pc->wake_irq)
+		return ret;
+
+	if (gpio <= 27)
+		irqgroup = 0;
+	else if (gpio >= 28 && gpio <= 45)
+		irqgroup = 1;
+	else if (gpio >= 46 && gpio <= 57)
+		irqgroup = 2;
+	else
+		return ret;
+
+	if (on)
+		ret = enable_irq_wake(pc->wake_irq[irqgroup]);
+	else
+		ret = disable_irq_wake(pc->wake_irq[irqgroup]);
+
+	return ret;
+}
+
 static struct irq_chip bcm2835_gpio_irq_chip = {
 	.name = MODULE_NAME,
 	.irq_enable = bcm2835_gpio_irq_enable,
@@ -642,6 +677,8 @@ static struct irq_chip bcm2835_gpio_irq_chip = {
 	.irq_ack = bcm2835_gpio_irq_ack,
 	.irq_mask = bcm2835_gpio_irq_disable,
 	.irq_unmask = bcm2835_gpio_irq_enable,
+	.irq_set_wake = bcm2835_gpio_irq_set_wake,
+	.flags = IRQCHIP_MASK_ON_SUSPEND,
 };
 
 static int bcm2835_pctl_get_groups_count(struct pinctrl_dev *pctldev)
@@ -1137,6 +1174,10 @@ static const struct of_device_id bcm2835_pinctrl_match[] = {
 		.compatible = "brcm,bcm2711-gpio",
 		.data = &bcm2711_plat_data,
 	},
+	{
+		.compatible = "brcm,bcm7211-gpio",
+		.data = &bcm2711_plat_data,
+	},
 	{}
 };
 
@@ -1150,6 +1191,7 @@ static int bcm2835_pinctrl_probe(struct platform_device *pdev)
 	struct resource iomem;
 	int err, i;
 	const struct of_device_id *match;
+	int is_7211 = 0;
 
 	BUILD_BUG_ON(ARRAY_SIZE(bcm2835_gpio_pins) != BCM2711_NUM_GPIOS);
 	BUILD_BUG_ON(ARRAY_SIZE(bcm2835_gpio_groups) != BCM2711_NUM_GPIOS);
@@ -1176,6 +1218,7 @@ static int bcm2835_pinctrl_probe(struct platform_device *pdev)
 		return -EINVAL;
 
 	pdata = match->data;
+	is_7211 = of_device_is_compatible(np, "brcm,bcm7211-gpio");
 
 	pc->gpio_chip = *pdata->gpio_chip;
 	pc->gpio_chip.parent = dev;
@@ -1210,6 +1253,15 @@ static int bcm2835_pinctrl_probe(struct platform_device *pdev)
 				     GFP_KERNEL);
 	if (!girq->parents)
 		return -ENOMEM;
+
+	if (is_7211) {
+		pc->wake_irq = devm_kcalloc(dev, BCM2835_NUM_IRQS,
+					    sizeof(*pc->wake_irq),
+					    GFP_KERNEL);
+		if (!pc->wake_irq)
+			return -ENOMEM;
+	}
+
 	/*
 	 * Use the same handler for all groups: this is necessary
 	 * since we use one gpiochip to cover all lines - the
@@ -1217,8 +1269,34 @@ static int bcm2835_pinctrl_probe(struct platform_device *pdev)
 	 * bank that was firing the IRQ and look up the per-group
 	 * and bank data.
 	 */
-	for (i = 0; i < BCM2835_NUM_IRQS; i++)
+	for (i = 0; i < BCM2835_NUM_IRQS; i++) {
+		int len;
+		char *name;
+
 		girq->parents[i] = irq_of_parse_and_map(np, i);
+		if (!is_7211)
+			continue;
+
+		/* Skip over the all banks interrupts */
+		pc->wake_irq[i] = irq_of_parse_and_map(np, i +
+						       BCM2835_NUM_IRQS + 1);
+
+		len = strlen(dev_name(pc->dev)) + 16;
+		name = devm_kzalloc(pc->dev, len, GFP_KERNEL);
+		if (!name)
+			return -ENOMEM;
+
+		snprintf(name, len, "%s:bank%d", dev_name(pc->dev), i);
+
+		/* These are optional interrupts */
+		err = devm_request_irq(dev, pc->wake_irq[i],
+				       bcm2835_gpio_wake_irq_handler,
+				       IRQF_SHARED, name, pc);
+		if (err)
+			dev_warn(dev, "unable to request wake IRQ %d\n",
+				 pc->wake_irq[i]);
+	}
+
 	girq->default_type = IRQ_TYPE_NONE;
 	girq->handler = handle_level_irq;