gpio / ACPI: get rid of acpi_gpio.h

Now that all users of acpi_gpio.h have been moved to use either the GPIO
descriptor interface or to the internal gpiolib.h we can get rid of
acpi_gpio.h entirely.

Once this is done the only interface to get GPIOs to drivers enumerated
from ACPI namespace is the descriptor based interface.
Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Acked-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Acked-by: Alexandre Courbot <acourbot@nvidia.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>

drivers/gpio/gpiolib-acpi.c

@@ -12,11 +12,13 @@
 
 #include <linux/errno.h>
 #include <linux/gpio/consumer.h>
+#include <linux/gpio/driver.h>
 #include <linux/export.h>
-#include <linux/acpi_gpio.h>
 #include <linux/acpi.h>
 #include <linux/interrupt.h>
 
+#include "gpiolib.h"
+
 struct acpi_gpio_evt_pin {
 	struct list_head node;
 	acpi_handle *evt_handle;
@@ -307,7 +309,6 @@ struct gpio_desc *acpi_get_gpiod_by_index(struct device *dev, int index,
 
 	return lookup.desc ? lookup.desc : ERR_PTR(-ENOENT);
 }
-EXPORT_SYMBOL_GPL(acpi_get_gpiod_by_index);
 
 void acpi_gpiochip_add(struct gpio_chip *chip)
 {

drivers/gpio/gpiolib.c

@@ -10,7 +10,6 @@
 #include <linux/seq_file.h>
 #include <linux/gpio.h>
 #include <linux/of_gpio.h>
-#include <linux/acpi_gpio.h>
 #include <linux/idr.h>
 #include <linux/slab.h>
 #include <linux/acpi.h>

drivers/gpio/gpiolib.h

@@ -12,12 +12,35 @@
 #ifndef GPIOLIB_H
 #define GPIOLIB_H
 
+#include <linux/err.h>
+#include <linux/device.h>
+
+/**
+ * struct acpi_gpio_info - ACPI GPIO specific information
+ * @gpioint: if %true this GPIO is of type GpioInt otherwise type is GpioIo
+ * @active_low: in case of @gpioint, the pin is active low
+ */
+struct acpi_gpio_info {
+	bool gpioint;
+	bool active_low;
+};
+
 #ifdef CONFIG_ACPI
 void acpi_gpiochip_add(struct gpio_chip *chip);
 void acpi_gpiochip_remove(struct gpio_chip *chip);
+
+struct gpio_desc *acpi_get_gpiod_by_index(struct device *dev, int index,
+					  struct acpi_gpio_info *info);
 #else
 static inline void acpi_gpiochip_add(struct gpio_chip *chip) { }
 static inline void acpi_gpiochip_remove(struct gpio_chip *chip) { }
+
+static inline struct gpio_desc *
+acpi_get_gpiod_by_index(struct device *dev, int index,
+			struct acpi_gpio_info *info)
+{
+	return ERR_PTR(-ENOSYS);
+}
 #endif
 
 #endif /* GPIOLIB_H */

include/linux/acpi_gpio.h

-#ifndef _LINUX_ACPI_GPIO_H_
-#define _LINUX_ACPI_GPIO_H_
-
-#include <linux/device.h>
-#include <linux/err.h>
-#include <linux/errno.h>
-#include <linux/gpio.h>
-#include <linux/gpio/consumer.h>
-
-/**
- * struct acpi_gpio_info - ACPI GPIO specific information
- * @gpioint: if %true this GPIO is of type GpioInt otherwise type is GpioIo
- * @active_low: in case of @gpioint, the pin is active low
- */
-struct acpi_gpio_info {
-	bool gpioint;
-	bool active_low;
-};
-
-#ifdef CONFIG_GPIO_ACPI
-
-struct gpio_desc *acpi_get_gpiod_by_index(struct device *dev, int index,
-					  struct acpi_gpio_info *info);
-#else /* CONFIG_GPIO_ACPI */
-
-static inline struct gpio_desc *
-acpi_get_gpiod_by_index(struct device *dev, int index,
-			struct acpi_gpio_info *info)
-{
-	return ERR_PTR(-ENOSYS);
-}
-
-#endif /* CONFIG_GPIO_ACPI */
-
-static inline int acpi_get_gpio_by_index(struct device *dev, int index,
-					 struct acpi_gpio_info *info)
-{
-	struct gpio_desc *desc = acpi_get_gpiod_by_index(dev, index, info);
-
-	if (IS_ERR(desc))
-		return PTR_ERR(desc);
-	return desc_to_gpio(desc);
-}
-
-#endif /* _LINUX_ACPI_GPIO_H_ */