Merge tag 'gpio-v5.4-1' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-gpio

Pull GPIO updates from Linus Walleij:
 "This is the bulk of changes in the GPIO subsystem for the v5.4 kernel
  cycle.

  Core changes:

   - Support hierarchical GPIO irqchips.

     We now have three consumers that can use this: Intel IXP4xx,
     ThunderX and Qualcomm SPMI GPIO (in the pinctrl subsystem).

     The support code has been long in the making and hashed out so it
     should be easily adaptable for all hierarchical irqchip parents.
     The code only gets compiled in if hierarchical irqchip is used at
     the topmost irq controller at least, as the hierarchical irqchip
     requires strict hierarchy all the way up in the system.

   - Determine the need for a "valid_mask" for GPIO lines on the
     gpio_chip and conversely for the "valid_mask" for the GPIO
     interrupt chip interrupt lines by looking for a .init_valid_mask()
     callback in the main chip or GPIO interrupt chip respectively.
     Allocate it with bitmap_alloc().

   - Isolate the device tree/open firmware GPIO description code out in
     its own file properly.

   - Isolate the ACPI GPIO description code out in its own file
     properly.

   - Drop a whole lot of #ifdef:s in the main includes: it does not hurt
     to keep the include items around, and we get quicker and clearer
     compile failures if the appropriate kernel symbols are not selected
     for drivers.

  New/deleted drivers:

   - New driver for Aspeed SGPIO.

   - The KS8695 driver is deleted as the platform gets deleted from
     arch/arm in this kernel cycle.

   - The Cirrus Logic Madera driver now supports CS47L92 and CS47L15.

   - The Freescale MPC8xxx now supports LS1028A and LS1088A.

  Driver improvements:

   - We pass the GPIO irqchip intialization by directly filling in the
     struct instead of using set-up functions (the new way) for Intel
     MID, Lynxpoint, Merrifield, XLP, HLWD, Aspeed, ZX, VF610, TQMX86,
     MT7621, Zynq and EP93xx.

  Out-of-band changes:

   - Fix a GPIO header inclusion in Unicore - no response from
     maintainer.

   - Drop FMC subsystem from MAINTAINERS - was deleted in the GPIO tree
     last cycle so let's mop up the shards"

* tag 'gpio-v5.4-1' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-gpio: (82 commits)
  gpiolib: of: add a fallback for wlf,reset GPIO name
  gpio: htc-egpio: Remove unused exported htc_egpio_get_wakeup_irq()
  gpio: remove explicit comparison with 0
  gpio: creg-snps: use devm_platform_ioremap_resource() to simplify code
  gpio: devres: Switch to EXPORT_SYMBOL_GPL()
  gpio: of: Switch to EXPORT_SYMBOL_GPL()
  gpio: of: Make of_gpio_simple_xlate() private
  gpio: of: Make of_get_named_gpiod_flags() private
  gpio: aspeed: Add in ast2600 details to Aspeed driver
  gpio: aspeed: Use ngpio property from device tree if available
  gpio: aspeed: Setup irqchip dynamically
  gpio/aspeed: Fix incorrect number of banks
  gpio: aspeed: Update documentation with ast2600 controllers
  gpio: Initialize the irqchip valid_mask with a callback
  gpiolib: acpi: make acpi_can_fallback_to_crs() static
  gpio: Fix further merge errors
  gpio: Fix up merge collision in include file
  gpio: of: Normalize return code variable name
  gpio: gpiolib: Normalize return code variable name
  gpio: ep93xx: Pass irqchip when adding gpiochip
  ...

1 files changed, 33 insertions, 37 deletions

diff --git a/drivers/gpio/gpio-pca953x.c b/drivers/gpio/gpio-pca953x.c
index 48fea4c68e8d..de5d1383f28d 100644
--- a/drivers/gpio/gpio-pca953x.c
+++ b/drivers/gpio/gpio-pca953x.c
@@ -9,6 +9,7 @@
  */
 
 #include <linux/acpi.h>
+#include <linux/bits.h>
 #include <linux/gpio/driver.h>
 #include <linux/gpio/consumer.h>
 #include <linux/i2c.h>
@@ -28,9 +29,9 @@
 #define PCA953X_INVERT		0x02
 #define PCA953X_DIRECTION	0x03
 
-#define REG_ADDR_MASK		0x3f
-#define REG_ADDR_EXT		0x40
-#define REG_ADDR_AI		0x80
+#define REG_ADDR_MASK		GENMASK(5, 0)
+#define REG_ADDR_EXT		BIT(6)
+#define REG_ADDR_AI		BIT(7)
 
 #define PCA957X_IN		0x00
 #define PCA957X_INVRT		0x01
@@ -55,17 +56,17 @@
 #define PCAL6524_OUT_INDCONF	0x2c
 #define PCAL6524_DEBOUNCE	0x2d
 
-#define PCA_GPIO_MASK		0x00FF
+#define PCA_GPIO_MASK		GENMASK(7, 0)
 
-#define PCAL_GPIO_MASK		0x1f
-#define PCAL_PINCTRL_MASK	0x60
+#define PCAL_GPIO_MASK		GENMASK(4, 0)
+#define PCAL_PINCTRL_MASK	GENMASK(6, 5)
 
-#define PCA_INT			0x0100
-#define PCA_PCAL		0x0200
+#define PCA_INT			BIT(8)
+#define PCA_PCAL		BIT(9)
 #define PCA_LATCH_INT		(PCA_PCAL | PCA_INT)
-#define PCA953X_TYPE		0x1000
-#define PCA957X_TYPE		0x2000
-#define PCA_TYPE_MASK		0xF000
+#define PCA953X_TYPE		BIT(12)
+#define PCA957X_TYPE		BIT(13)
+#define PCA_TYPE_MASK		GENMASK(15, 12)
 
 #define PCA_CHIP_TYPE(x)	((x) & PCA_TYPE_MASK)
 
@@ -565,7 +566,7 @@ static void pca953x_irq_mask(struct irq_data *d)
 	struct gpio_chip *gc = irq_data_get_irq_chip_data(d);
 	struct pca953x_chip *chip = gpiochip_get_data(gc);
 
-	chip->irq_mask[d->hwirq / BANK_SZ] &= ~(1 << (d->hwirq % BANK_SZ));
+	chip->irq_mask[d->hwirq / BANK_SZ] &= ~BIT(d->hwirq % BANK_SZ);
 }
 
 static void pca953x_irq_unmask(struct irq_data *d)
@@ -573,7 +574,7 @@ static void pca953x_irq_unmask(struct irq_data *d)
 	struct gpio_chip *gc = irq_data_get_irq_chip_data(d);
 	struct pca953x_chip *chip = gpiochip_get_data(gc);
 
-	chip->irq_mask[d->hwirq / BANK_SZ] |= 1 << (d->hwirq % BANK_SZ);
+	chip->irq_mask[d->hwirq / BANK_SZ] |= BIT(d->hwirq % BANK_SZ);
 }
 
 static int pca953x_irq_set_wake(struct irq_data *d, unsigned int on)
@@ -640,7 +641,7 @@ static int pca953x_irq_set_type(struct irq_data *d, unsigned int type)
 	struct gpio_chip *gc = irq_data_get_irq_chip_data(d);
 	struct pca953x_chip *chip = gpiochip_get_data(gc);
 	int bank_nb = d->hwirq / BANK_SZ;
-	u8 mask = 1 << (d->hwirq % BANK_SZ);
+	u8 mask = BIT(d->hwirq % BANK_SZ);
 
 	if (!(type & IRQ_TYPE_EDGE_BOTH)) {
 		dev_err(&chip->client->dev, "irq %d: unsupported type %d\n",
@@ -665,7 +666,7 @@ static void pca953x_irq_shutdown(struct irq_data *d)
 {
 	struct gpio_chip *gc = irq_data_get_irq_chip_data(d);
 	struct pca953x_chip *chip = gpiochip_get_data(gc);
-	u8 mask = 1 << (d->hwirq % BANK_SZ);
+	u8 mask = BIT(d->hwirq % BANK_SZ);
 
 	chip->irq_trig_raise[d->hwirq / BANK_SZ] &= ~mask;
 	chip->irq_trig_fall[d->hwirq / BANK_SZ] &= ~mask;
@@ -846,12 +847,12 @@ static int device_pca95xx_init(struct pca953x_chip *chip, u32 invert)
 
 	ret = regcache_sync_region(chip->regmap, chip->regs->output,
 				   chip->regs->output + NBANK(chip));
-	if (ret != 0)
+	if (ret)
 		goto out;
 
 	ret = regcache_sync_region(chip->regmap, chip->regs->direction,
 				   chip->regs->direction + NBANK(chip));
-	if (ret != 0)
+	if (ret)
 		goto out;
 
 	/* set platform specific polarity inversion */
@@ -946,19 +947,15 @@ static int pca953x_probe(struct i2c_client *client,
 	if (i2c_id) {
 		chip->driver_data = i2c_id->driver_data;
 	} else {
-		const struct acpi_device_id *acpi_id;
-		struct device *dev = &client->dev;
-
-		chip->driver_data = (uintptr_t)of_device_get_match_data(dev);
-		if (!chip->driver_data) {
-			acpi_id = acpi_match_device(pca953x_acpi_ids, dev);
-			if (!acpi_id) {
-				ret = -ENODEV;
-				goto err_exit;
-			}
-
-			chip->driver_data = acpi_id->driver_data;
+		const void *match;
+
+		match = device_get_match_data(&client->dev);
+		if (!match) {
+			ret = -ENODEV;
+			goto err_exit;
 		}
+
+		chip->driver_data = (uintptr_t)match;
 	}
 
 	i2c_set_clientdata(client, chip);
@@ -1038,8 +1035,7 @@ static int pca953x_remove(struct i2c_client *client)
 		ret = pdata->teardown(client, chip->gpio_chip.base,
 				chip->gpio_chip.ngpio, pdata->context);
 		if (ret < 0)
-			dev_err(&client->dev, "%s failed, %d\n",
-					"teardown", ret);
+			dev_err(&client->dev, "teardown failed, %d\n", ret);
 	} else {
 		ret = 0;
 	}
@@ -1061,14 +1057,14 @@ static int pca953x_regcache_sync(struct device *dev)
 	 */
 	ret = regcache_sync_region(chip->regmap, chip->regs->direction,
 				   chip->regs->direction + NBANK(chip));
-	if (ret != 0) {
+	if (ret) {
 		dev_err(dev, "Failed to sync GPIO dir registers: %d\n", ret);
 		return ret;
 	}
 
 	ret = regcache_sync_region(chip->regmap, chip->regs->output,
 				   chip->regs->output + NBANK(chip));
-	if (ret != 0) {
+	if (ret) {
 		dev_err(dev, "Failed to sync GPIO out registers: %d\n", ret);
 		return ret;
 	}
@@ -1077,7 +1073,7 @@ static int pca953x_regcache_sync(struct device *dev)
 	if (chip->driver_data & PCA_PCAL) {
 		ret = regcache_sync_region(chip->regmap, PCAL953X_IN_LATCH,
 					   PCAL953X_IN_LATCH + NBANK(chip));
-		if (ret != 0) {
+		if (ret) {
 			dev_err(dev, "Failed to sync INT latch registers: %d\n",
 				ret);
 			return ret;
@@ -1085,7 +1081,7 @@ static int pca953x_regcache_sync(struct device *dev)
 
 		ret = regcache_sync_region(chip->regmap, PCAL953X_INT_MASK,
 					   PCAL953X_INT_MASK + NBANK(chip));
-		if (ret != 0) {
+		if (ret) {
 			dev_err(dev, "Failed to sync INT mask registers: %d\n",
 				ret);
 			return ret;
@@ -1117,7 +1113,7 @@ static int pca953x_resume(struct device *dev)
 
 	if (!atomic_read(&chip->wakeup_path)) {
 		ret = regulator_enable(chip->regulator);
-		if (ret != 0) {
+		if (ret) {
 			dev_err(dev, "Failed to enable regulator: %d\n", ret);
 			return 0;
 		}
@@ -1130,7 +1126,7 @@ static int pca953x_resume(struct device *dev)
 		return ret;
 
 	ret = regcache_sync(chip->regmap);
-	if (ret != 0) {
+	if (ret) {
 		dev_err(dev, "Failed to restore register map: %d\n", ret);
 		return ret;
 	}