Merge tag 'config-gpio-legacy-for-7.3' of https://git.kernel.org/pub/scm/linux/kernel/git/arnd/playground into gpio/for-next

gpio: legacy interface cleanups for 7.3

These are the remaining patches for legacy gpio interface
cleanup, ensuring that files referencing them are sure to
have CONFIG_GPIOLIB_LEGACY set, and use linux/gpio/legacy.h
instead of the old linux/gpio.h header.

There are a few more patches already merged in other
branches for 7.3, including soc, led, net and media. Once
everything is in, we can apply the final patches to turn
off CONFIG_GPIOLIB_LEGACY by default and remove the obsolete
header file.

This branch is based on the immutable ib-mfd-legacy-gpio-7.3
branch from mfd.git to avoid a conflict in the rohm drivers.

9 files changed, 190 insertions, 72 deletions

diff --git a/drivers/mfd/aat2870-core.c b/drivers/mfd/aat2870-core.c
index 34d66ba9646a..0d56cd6fbc6a 100644
--- a/drivers/mfd/aat2870-core.c
+++ b/drivers/mfd/aat2870-core.c
@@ -13,7 +13,7 @@
 #include <linux/uaccess.h>
 #include <linux/i2c.h>
 #include <linux/delay.h>
-#include <linux/gpio.h>
+#include <linux/gpio/legacy.h>
 #include <linux/mfd/core.h>
 #include <linux/mfd/aat2870.h>
 #include <linux/regulator/machine.h>
diff --git a/drivers/mfd/arizona-irq.c b/drivers/mfd/arizona-irq.c
index 544016d420fe..14f9cb2c4b67 100644
--- a/drivers/mfd/arizona-irq.c
+++ b/drivers/mfd/arizona-irq.c
@@ -8,7 +8,7 @@
  */
 
 #include <linux/delay.h>
-#include <linux/gpio.h>
+#include <linux/gpio/legacy.h>
 #include <linux/interrupt.h>
 #include <linux/irq.h>
 #include <linux/irqdomain.h>
diff --git a/drivers/mfd/lp3943.c b/drivers/mfd/lp3943.c
index 6764553147e4..1918b5c7a5e7 100644
--- a/drivers/mfd/lp3943.c
+++ b/drivers/mfd/lp3943.c
@@ -28,7 +28,7 @@
  */
 
 #include <linux/err.h>
-#include <linux/gpio.h>
+#include <linux/gpio/consumer.h>
 #include <linux/i2c.h>
 #include <linux/mfd/core.h>
 #include <linux/mfd/lp3943.h>
diff --git a/drivers/mfd/rohm-bd71828.c b/drivers/mfd/rohm-bd71828.c
index a79f354bf5cb..5fb6142cf087 100644
--- a/drivers/mfd/rohm-bd71828.c
+++ b/drivers/mfd/rohm-bd71828.c
@@ -5,7 +5,8 @@
  * ROHM BD718[15/28/79] and BD72720 PMIC driver
  */
 
-#include <linux/gpio_keys.h>
+#include <linux/device/devres.h>
+#include <linux/gfp_types.h>
 #include <linux/i2c.h>
 #include <linux/input.h>
 #include <linux/interrupt.h>
@@ -18,6 +19,7 @@
 #include <linux/mfd/rohm-generic.h>
 #include <linux/module.h>
 #include <linux/of.h>
+#include <linux/property.h>
 #include <linux/regmap.h>
 #include <linux/types.h>
 
@@ -37,19 +39,6 @@
 		},							   \
 	}
 
-static struct gpio_keys_button button = {
-	.code = KEY_POWER,
-	.gpio = -1,
-	.type = EV_KEY,
-	.wakeup = 1,
-};
-
-static const struct gpio_keys_platform_data bd71828_powerkey_data = {
-	.buttons = &button,
-	.nbuttons = 1,
-	.name = "bd71828-pwrkey",
-};
-
 static const struct resource bd71815_rtc_irqs[] = {
 	DEFINE_RES_IRQ_NAMED(BD71815_INT_RTC0, "bd70528-rtc-alm-0"),
 	DEFINE_RES_IRQ_NAMED(BD71815_INT_RTC1, "bd70528-rtc-alm-1"),
@@ -174,10 +163,6 @@ static struct mfd_cell bd71828_mfd_cells[] = {
 		.name = "bd71828-rtc",
 		.resources = bd71828_rtc_irqs,
 		.num_resources = ARRAY_SIZE(bd71828_rtc_irqs),
-	}, {
-		.name = "gpio-keys",
-		.platform_data = &bd71828_powerkey_data,
-		.pdata_size = sizeof(bd71828_powerkey_data),
 	},
 };
 
@@ -242,11 +227,8 @@ static const struct mfd_cell bd72720_mfd_cells[] = {
 		.name = "bd72720-rtc",
 		.resources = bd72720_rtc_irqs,
 		.num_resources = ARRAY_SIZE(bd72720_rtc_irqs),
-	}, {
-		.name = "gpio-keys",
-		.platform_data = &bd71828_powerkey_data,
-		.pdata_size = sizeof(bd71828_powerkey_data),
 	},
+	/* Power button is registered separately */
 };
 
 static const struct regmap_range bd71815_volatile_ranges[] = {
@@ -877,6 +859,84 @@ static int set_clk_mode(struct device *dev, struct regmap *regmap,
 				  OUT32K_MODE_CMOS);
 }
 
+static const struct property_entry bd71828_powerkey_parent_props[] = {
+	PROPERTY_ENTRY_STRING("label", "bd71828-pwrkey"),
+	{ }
+};
+
+static const struct property_entry bd71828_powerkey_props[] = {
+	PROPERTY_ENTRY_U32("linux,code", KEY_POWER),
+	PROPERTY_ENTRY_BOOL("wakeup-source"),
+	{ }
+};
+
+#define GPIO_KEYS  0	/* Node corresponding to gpio-keys device itself */
+#define PWRON_KEY  1	/* Node describing power button in gpio-keys */
+
+static int bd71828_i2c_register_swnodes(const struct software_node *nodes)
+{
+	const struct software_node * const node_group[] = {
+		&nodes[GPIO_KEYS], &nodes[PWRON_KEY], NULL
+	};
+
+	return software_node_register_node_group(node_group);
+}
+
+static void bd71828_i2c_unregister_swnodes(void *data)
+{
+	const struct software_node *nodes = data;
+	const struct software_node * const node_group[] = {
+		&nodes[GPIO_KEYS], &nodes[PWRON_KEY], NULL
+	};
+
+	software_node_unregister_node_group(node_group);
+}
+
+static int bd71828_i2c_register_pwrbutton(struct device *dev, int button_irq,
+					  struct irq_domain *irq_domain)
+{
+	const struct resource res[] = {
+		DEFINE_RES_IRQ_NAMED(button_irq, "bd71828-pwrkey"),
+	};
+	struct mfd_cell gpio_keys_cell = {
+		.name = "gpio-keys",
+		.resources = res,
+		.num_resources = ARRAY_SIZE(res),
+	};
+	struct software_node *nodes;
+	int ret;
+
+	nodes = devm_kcalloc(dev, 2, sizeof(*nodes), GFP_KERNEL);
+	if (!nodes)
+		return -ENOMEM;
+
+	nodes[GPIO_KEYS].name = devm_kasprintf(dev, GFP_KERNEL, "%s-power-key", dev_name(dev));
+	if (!nodes[GPIO_KEYS].name)
+		return -ENOMEM;
+
+	nodes[GPIO_KEYS].properties = bd71828_powerkey_parent_props;
+
+	nodes[PWRON_KEY].parent = &nodes[GPIO_KEYS];
+	nodes[PWRON_KEY].properties = bd71828_powerkey_props;
+
+	ret = bd71828_i2c_register_swnodes(nodes);
+	if (ret)
+		return ret;
+
+	ret = devm_add_action_or_reset(dev, bd71828_i2c_unregister_swnodes, nodes);
+	if (ret)
+		return ret;
+
+	gpio_keys_cell.swnode = &nodes[GPIO_KEYS];
+
+	ret = devm_mfd_add_devices(dev, PLATFORM_DEVID_AUTO, &gpio_keys_cell, 1,
+				   NULL, 0, irq_domain);
+	if (ret)
+		return dev_err_probe(dev, ret, "Failed to register power-button");
+
+	return 0;
+}
+
 static struct i2c_client *bd71828_dev;
 static void bd71828_power_off(void)
 {
@@ -929,6 +989,7 @@ static struct regmap *bd72720_do_regmaps(struct i2c_client *i2c)
 static int bd71828_i2c_probe(struct i2c_client *i2c)
 {
 	struct regmap_irq_chip_data *irq_data;
+	struct irq_domain *irq_domain;
 	int ret;
 	struct regmap *regmap = NULL;
 	const struct regmap_config *regmap_config;
@@ -1022,23 +1083,23 @@ static int bd71828_i2c_probe(struct i2c_client *i2c)
 					"Failed to enable main level IRQs\n");
 		}
 	}
-	if (button_irq) {
-		ret = regmap_irq_get_virq(irq_data, button_irq);
-		if (ret < 0)
-			return dev_err_probe(&i2c->dev, ret,
-					     "Failed to get the power-key IRQ\n");
-
-		button.irq = ret;
-	}
 
 	ret = set_clk_mode(&i2c->dev, regmap, clkmode_reg);
 	if (ret)
 		return ret;
 
+	irq_domain = regmap_irq_get_domain(irq_data);
+
 	ret = devm_mfd_add_devices(&i2c->dev, PLATFORM_DEVID_AUTO, mfd, cells,
-				   NULL, 0, regmap_irq_get_domain(irq_data));
+				   NULL, 0, irq_domain);
 	if (ret)
-		return	dev_err_probe(&i2c->dev, ret, "Failed to create subdevices\n");
+		return dev_err_probe(&i2c->dev, ret, "Failed to create subdevices\n");
+
+	if (button_irq) {
+		ret = bd71828_i2c_register_pwrbutton(&i2c->dev, button_irq, irq_domain);
+		if (ret)
+			return ret;
+	}
 
 	if (of_device_is_system_power_controller(i2c->dev.of_node) &&
 	    chip_type == ROHM_CHIP_TYPE_BD71828) {
diff --git a/drivers/mfd/rohm-bd718x7.c b/drivers/mfd/rohm-bd718x7.c
index ff714fd4f54d..be2acc429fe3 100644
--- a/drivers/mfd/rohm-bd718x7.c
+++ b/drivers/mfd/rohm-bd718x7.c
@@ -7,7 +7,8 @@
 // Datasheet for BD71837MWV available from
 // https://www.rohm.com/datasheet/BD71837MWV/bd71837mwv-e
 
-#include <linux/gpio_keys.h>
+#include <linux/device/devres.h>
+#include <linux/gfp_types.h>
 #include <linux/i2c.h>
 #include <linux/input.h>
 #include <linux/interrupt.h>
@@ -15,37 +16,16 @@
 #include <linux/mfd/core.h>
 #include <linux/module.h>
 #include <linux/of.h>
+#include <linux/property.h>
 #include <linux/regmap.h>
 #include <linux/types.h>
 
-static struct gpio_keys_button button = {
-	.code = KEY_POWER,
-	.gpio = -1,
-	.type = EV_KEY,
-};
-
-static struct gpio_keys_platform_data bd718xx_powerkey_data = {
-	.buttons = &button,
-	.nbuttons = 1,
-	.name = "bd718xx-pwrkey",
-};
-
 static struct mfd_cell bd71837_mfd_cells[] = {
-	{
-		.name = "gpio-keys",
-		.platform_data = &bd718xx_powerkey_data,
-		.pdata_size = sizeof(bd718xx_powerkey_data),
-	},
 	{ .name = "bd71837-clk", },
 	{ .name = "bd71837-pmic", },
 };
 
 static struct mfd_cell bd71847_mfd_cells[] = {
-	{
-		.name = "gpio-keys",
-		.platform_data = &bd718xx_powerkey_data,
-		.pdata_size = sizeof(bd718xx_powerkey_data),
-	},
 	{ .name = "bd71847-clk", },
 	{ .name = "bd71847-pmic", },
 };
@@ -125,10 +105,89 @@ static int bd718xx_init_press_duration(struct regmap *regmap,
 	return 0;
 }
 
+static const struct property_entry bd718xx_powerkey_parent_props[] = {
+	PROPERTY_ENTRY_STRING("label", "bd718xx-pwrkey"),
+	{ }
+};
+
+static const struct property_entry bd718xx_powerkey_props[] = {
+	PROPERTY_ENTRY_U32("linux,code", KEY_POWER),
+	{ }
+};
+
+static const struct resource bd718xx_powerkey_resources[] = {
+	DEFINE_RES_IRQ_NAMED(BD718XX_INT_PWRBTN_S, "bd718xx-pwrkey"),
+};
+
+#define GPIO_KEYS  0	/* Node corresponding to gpio-keys device itself */
+#define PWRON_KEY  1	/* Node describing power button in gpio-keys */
+
+static int bd718xx_i2c_register_swnodes(const struct software_node *nodes)
+{
+	const struct software_node * const node_group[] = {
+		&nodes[GPIO_KEYS], &nodes[PWRON_KEY], NULL
+	};
+
+	return software_node_register_node_group(node_group);
+}
+
+static void bd718xx_i2c_unregister_swnodes(void *data)
+{
+	const struct software_node *nodes = data;
+	const struct software_node * const node_group[] = {
+		&nodes[GPIO_KEYS], &nodes[PWRON_KEY], NULL
+	};
+
+	software_node_unregister_node_group(node_group);
+}
+
+static int bd718xx_i2c_register_pwrbutton(struct device *dev,
+					  struct irq_domain *irq_domain)
+{
+	struct mfd_cell gpio_keys_cell = {
+		.name = "gpio-keys",
+		.resources = bd718xx_powerkey_resources,
+		.num_resources = ARRAY_SIZE(bd718xx_powerkey_resources),
+	};
+	struct software_node *nodes;
+	int ret;
+
+	nodes = devm_kcalloc(dev, 2, sizeof(*nodes), GFP_KERNEL);
+	if (!nodes)
+		return -ENOMEM;
+
+	nodes[GPIO_KEYS].name = devm_kasprintf(dev, GFP_KERNEL, "%s-power-key", dev_name(dev));
+	if (!nodes[GPIO_KEYS].name)
+		return -ENOMEM;
+
+	nodes[GPIO_KEYS].properties = bd718xx_powerkey_parent_props;
+
+	nodes[PWRON_KEY].parent = &nodes[GPIO_KEYS];
+	nodes[PWRON_KEY].properties = bd718xx_powerkey_props;
+
+	ret = bd718xx_i2c_register_swnodes(nodes);
+	if (ret)
+		return ret;
+
+	ret = devm_add_action_or_reset(dev, bd718xx_i2c_unregister_swnodes, nodes);
+	if (ret)
+		return ret;
+
+	gpio_keys_cell.swnode = &nodes[GPIO_KEYS];
+
+	ret = devm_mfd_add_devices(dev, PLATFORM_DEVID_AUTO, &gpio_keys_cell, 1,
+				   NULL, 0, irq_domain);
+	if (ret)
+		return dev_err_probe(dev, ret, "Failed to register power-button");
+
+	return 0;
+}
+
 static int bd718xx_i2c_probe(struct i2c_client *i2c)
 {
 	struct regmap *regmap;
 	struct regmap_irq_chip_data *irq_data;
+	struct irq_domain *irq_domain;
 	int ret;
 	unsigned int chip_type;
 	struct mfd_cell *mfd;
@@ -169,20 +228,18 @@ static int bd718xx_i2c_probe(struct i2c_client *i2c)
 	if (ret)
 		return ret;
 
-	ret = regmap_irq_get_virq(irq_data, BD718XX_INT_PWRBTN_S);
-
-	if (ret < 0)
-		return dev_err_probe(&i2c->dev, ret, "Failed to get the IRQ\n");
-
-	button.irq = ret;
+	irq_domain = regmap_irq_get_domain(irq_data);
 
 	ret = devm_mfd_add_devices(&i2c->dev, PLATFORM_DEVID_AUTO,
-				   mfd, cells, NULL, 0,
-				   regmap_irq_get_domain(irq_data));
+				   mfd, cells, NULL, 0, irq_domain);
+	if (ret)
+		return dev_err_probe(&i2c->dev, ret, "Failed to create subdevices\n");
+
+	ret = bd718xx_i2c_register_pwrbutton(&i2c->dev, irq_domain);
 	if (ret)
-		dev_err_probe(&i2c->dev, ret, "Failed to create subdevices\n");
+		return ret;
 
-	return ret;
+	return 0;
 }
 
 static const struct of_device_id bd718xx_of_match[] = {
diff --git a/drivers/mfd/sm501.c b/drivers/mfd/sm501.c
index b5bda477ebfc..9d5bb67e8084 100644
--- a/drivers/mfd/sm501.c
+++ b/drivers/mfd/sm501.c
@@ -35,7 +35,7 @@ struct sm501_device {
 struct sm501_gpio;
 
 #ifdef CONFIG_MFD_SM501_GPIO
-#include <linux/gpio.h>
+#include <linux/gpio/consumer.h>
 
 struct sm501_gpio_chip {
 	struct gpio_chip	gpio;
diff --git a/drivers/mfd/tps6105x.c b/drivers/mfd/tps6105x.c
index e2f6858d101e..b11cd2c03311 100644
--- a/drivers/mfd/tps6105x.c
+++ b/drivers/mfd/tps6105x.c
@@ -16,7 +16,7 @@
 #include <linux/init.h>
 #include <linux/i2c.h>
 #include <linux/regmap.h>
-#include <linux/gpio.h>
+#include <linux/gpio/consumer.h>
 #include <linux/spinlock.h>
 #include <linux/slab.h>
 #include <linux/err.h>
diff --git a/drivers/mfd/tps65911-comparator.c b/drivers/mfd/tps65911-comparator.c
index 7098712ea008..cc8545a972bc 100644
--- a/drivers/mfd/tps65911-comparator.c
+++ b/drivers/mfd/tps65911-comparator.c
@@ -14,7 +14,7 @@
 #include <linux/err.h>
 #include <linux/platform_device.h>
 #include <linux/debugfs.h>
-#include <linux/gpio.h>
+#include <linux/gpio/consumer.h>
 #include <linux/mfd/tps65910.h>
 
 #define COMP1					0
diff --git a/drivers/mfd/wm8994-irq.c b/drivers/mfd/wm8994-irq.c
index a46cea948763..a15483489b9d 100644
--- a/drivers/mfd/wm8994-irq.c
+++ b/drivers/mfd/wm8994-irq.c
@@ -9,7 +9,7 @@
 
 #include <linux/kernel.h>
 #include <linux/module.h>
-#include <linux/gpio.h>
+#include <linux/gpio/consumer.h>
 #include <linux/i2c.h>
 #include <linux/irq.h>
 #include <linux/mfd/core.h>