Merge tag 'gpio-for-linus' of git://git.secretlab.ca/git/linux-2.6

Pull GPIO updates from Grant Likely:
 "GPIO follow up patch and type change for v3.5 merge window

  Primarily device driver additions, features and bug fixes.  Not much
  touching gpio common subsystem support.  Should not be scary."

* tag 'gpio-for-linus' of git://git.secretlab.ca/git/linux-2.6: (34 commits)
  gpio: Provide the STMPE GPIO driver with its own IRQ Domain
  gpio: add TS-5500 DIO blocks support
  gpio: pcf857x: use client->irq for gpio_to_irq()
  gpio: stmpe: Add DT support for stmpe gpio
  gpio: pl061 depends on ARM
  gpio/pl061: remove old comment
  gpio: SPEAr: add spi chipselect control driver
  gpio: gpio-max710x: Support device tree probing
  gpio: twl4030: Use only TWL4030_MODULE_LED for LED configuration
  gpio: tegra: read output value when gpio is set in direction_out
  gpio: pca953x: Add compatible strings to gpio-pca953x driver
  gpio: pca953x: Register an IRQ domain
  gpio: mvebu: Set free callback for gpio_chip
  gpio: tegra: Drop exporting static functions
  gpio: tegra: Staticize non-exported symbols
  gpio: tegra: fix suspend/resume apis
  gpio-pch: Set parent dev for gpio chip
  gpio: em: Fix build errors
  GPIO: clps711x: use platform_device_unregister in gpio_clps711x_init()
  gpio/tc3589x: convert to use the simple irqdomain
  ...

1 files changed, 49 insertions, 6 deletions

diff --git a/drivers/gpio/gpio-pca953x.c b/drivers/gpio/gpio-pca953x.c
index 9c693ae17956..0c5eaf5f4c90 100644
--- a/drivers/gpio/gpio-pca953x.c
+++ b/drivers/gpio/gpio-pca953x.c
@@ -16,6 +16,7 @@
 #include <linux/gpio.h>
 #include <linux/interrupt.h>
 #include <linux/irq.h>
+#include <linux/irqdomain.h>
 #include <linux/i2c.h>
 #include <linux/i2c/pca953x.h>
 #include <linux/slab.h>
@@ -83,6 +84,7 @@ struct pca953x_chip {
 	u32 irq_trig_raise;
 	u32 irq_trig_fall;
 	int	 irq_base;
+	struct irq_domain *domain;
 #endif
 
 	struct i2c_client *client;
@@ -333,14 +335,14 @@ static void pca953x_irq_mask(struct irq_data *d)
 {
 	struct pca953x_chip *chip = irq_data_get_irq_chip_data(d);
 
-	chip->irq_mask &= ~(1 << (d->irq - chip->irq_base));
+	chip->irq_mask &= ~(1 << d->hwirq);
 }
 
 static void pca953x_irq_unmask(struct irq_data *d)
 {
 	struct pca953x_chip *chip = irq_data_get_irq_chip_data(d);
 
-	chip->irq_mask |= 1 << (d->irq - chip->irq_base);
+	chip->irq_mask |= 1 << d->hwirq;
 }
 
 static void pca953x_irq_bus_lock(struct irq_data *d)
@@ -372,8 +374,7 @@ static void pca953x_irq_bus_sync_unlock(struct irq_data *d)
 static int pca953x_irq_set_type(struct irq_data *d, unsigned int type)
 {
 	struct pca953x_chip *chip = irq_data_get_irq_chip_data(d);
-	u32 level = d->irq - chip->irq_base;
-	u32 mask = 1 << level;
+	u32 mask = 1 << d->hwirq;
 
 	if (!(type & IRQ_TYPE_EDGE_BOTH)) {
 		dev_err(&chip->client->dev, "irq %d: unsupported type %d\n",
@@ -454,7 +455,7 @@ static irqreturn_t pca953x_irq_handler(int irq, void *devid)
 
 	do {
 		level = __ffs(pending);
-		handle_nested_irq(level + chip->irq_base);
+		handle_nested_irq(irq_find_mapping(chip->domain, level));
 
 		pending &= ~(1 << level);
 	} while (pending);
@@ -499,6 +500,17 @@ static int pca953x_irq_setup(struct pca953x_chip *chip,
 		if (chip->irq_base < 0)
 			goto out_failed;
 
+		chip->domain = irq_domain_add_legacy(client->dev.of_node,
+						chip->gpio_chip.ngpio,
+						chip->irq_base,
+						0,
+						&irq_domain_simple_ops,
+						NULL);
+		if (!chip->domain) {
+			ret = -ENODEV;
+			goto out_irqdesc_free;
+		}
+
 		for (lvl = 0; lvl < chip->gpio_chip.ngpio; lvl++) {
 			int irq = lvl + chip->irq_base;
 
@@ -521,7 +533,7 @@ static int pca953x_irq_setup(struct pca953x_chip *chip,
 		if (ret) {
 			dev_err(&client->dev, "failed to request irq %d\n",
 				client->irq);
-			goto out_failed;
+			goto out_irqdesc_free;
 		}
 
 		chip->gpio_chip.to_irq = pca953x_gpio_to_irq;
@@ -529,6 +541,8 @@ static int pca953x_irq_setup(struct pca953x_chip *chip,
 
 	return 0;
 
+out_irqdesc_free:
+	irq_free_descs(chip->irq_base, chip->gpio_chip.ngpio);
 out_failed:
 	chip->irq_base = -1;
 	return ret;
@@ -751,9 +765,38 @@ static int pca953x_remove(struct i2c_client *client)
 	return 0;
 }
 
+static const struct of_device_id pca953x_dt_ids[] = {
+	{ .compatible = "nxp,pca9534", },
+	{ .compatible = "nxp,pca9535", },
+	{ .compatible = "nxp,pca9536", },
+	{ .compatible = "nxp,pca9537", },
+	{ .compatible = "nxp,pca9538", },
+	{ .compatible = "nxp,pca9539", },
+	{ .compatible = "nxp,pca9554", },
+	{ .compatible = "nxp,pca9555", },
+	{ .compatible = "nxp,pca9556", },
+	{ .compatible = "nxp,pca9557", },
+	{ .compatible = "nxp,pca9574", },
+	{ .compatible = "nxp,pca9575", },
+
+	{ .compatible = "maxim,max7310", },
+	{ .compatible = "maxim,max7312", },
+	{ .compatible = "maxim,max7313", },
+	{ .compatible = "maxim,max7315", },
+
+	{ .compatible = "ti,pca6107", },
+	{ .compatible = "ti,tca6408", },
+	{ .compatible = "ti,tca6416", },
+	{ .compatible = "ti,tca6424", },
+	{ }
+};
+
+MODULE_DEVICE_TABLE(of, pca953x_dt_ids);
+
 static struct i2c_driver pca953x_driver = {
 	.driver = {
 		.name	= "pca953x",
+		.of_match_table = pca953x_dt_ids,
 	},
 	.probe		= pca953x_probe,
 	.remove		= pca953x_remove,