sunxi: axp: Move axp gpio code to a separate axpi-gpio driver

Move the axp-gpio code out of the drivers/power/axp*.c code, and into
a new separate axpi-gpio driver.

This change drops supports for the gpio3 pin on the axp209, as that requires
special handling, and no boards are using it.

Besides cleaning things up by moving the code to a separate driver, as
a bonus this change also adds support for the (non vusb) gpio pins on the
axp221 and the gpio pins on the axp152.

The new axp-gpio driver gets its own Kconfig option, and is only enabled
on boards which need it. Besides that it only gets enabled in the regular
u-boot build and not for the SPL as we never need it in the SPL.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Acked-by: Ian Campbell <ijc@hellion.org.uk>

3 files changed, 32 insertions, 33 deletions

diff --git a/include/axp152.h b/include/axp152.h
index 9d205f8..c3aef77 100644
--- a/include/axp152.h
+++ b/include/axp152.h
@@ -15,6 +15,17 @@ enum axp152_reg {
 
 #define AXP152_POWEROFF			(1 << 7)
 
+/* For axp_gpio.c */
+#define AXP_GPIO0_CTRL			0x90
+#define AXP_GPIO1_CTRL			0x91
+#define AXP_GPIO2_CTRL			0x92
+#define AXP_GPIO3_CTRL			0x93
+#define AXP_GPIO_CTRL_OUTPUT_LOW		0x00 /* Drive pin low */
+#define AXP_GPIO_CTRL_OUTPUT_HIGH		0x01 /* Drive pin high */
+#define AXP_GPIO_CTRL_INPUT			0x02 /* Input */
+#define AXP_GPIO_STATE			0x97
+#define AXP_GPIO_STATE_OFFSET			0
+
 int axp152_set_dcdc2(int mvolt);
 int axp152_set_dcdc3(int mvolt);
 int axp152_set_dcdc4(int mvolt);
diff --git a/include/axp209.h b/include/axp209.h
index fe4a169..6170202 100644
--- a/include/axp209.h
+++ b/include/axp209.h
@@ -4,8 +4,6 @@
  * SPDX-License-Identifier:	GPL-2.0+
  */
 
-struct udevice;
-
 enum axp209_reg {
 	AXP209_POWER_STATUS = 0x00,
 	AXP209_CHIP_VERSION = 0x03,
@@ -20,11 +18,6 @@ enum axp209_reg {
 	AXP209_IRQ_ENABLE5 = 0x44,
 	AXP209_IRQ_STATUS5 = 0x4c,
 	AXP209_SHUTDOWN = 0x32,
-	AXP209_GPIO0_CTRL = 0x90,
-	AXP209_GPIO1_CTRL = 0x92,
-	AXP209_GPIO2_CTRL = 0x93,
-	AXP209_GPIO_STATE = 0x94,
-	AXP209_GPIO3_CTRL = 0x95,
 };
 
 #define AXP209_POWER_STATUS_ON_BY_DC	(1 << 0)
@@ -35,16 +28,17 @@ enum axp209_reg {
 
 #define AXP209_POWEROFF			(1 << 7)
 
-#define AXP209_GPIO_OUTPUT_LOW		0x00 /* Drive pin low */
-#define AXP209_GPIO_OUTPUT_HIGH		0x01 /* Drive pin high */
-#define AXP209_GPIO_INPUT		0x02 /* Float pin */
-
-/* GPIO3 is different from the others */
-#define AXP209_GPIO3_OUTPUT_LOW		0x00 /* Drive pin low, Output mode */
-#define AXP209_GPIO3_OUTPUT_HIGH	0x02 /* Float pin, Output mode */
-#define AXP209_GPIO3_INPUT		0x06 /* Float pin, Input mode */
-
-#define AXP_GPIO
+/* For axp_gpio.c */
+#define AXP_POWER_STATUS		0x00
+#define AXP_POWER_STATUS_VBUS_PRESENT		(1 << 5)
+#define AXP_GPIO0_CTRL			0x90
+#define AXP_GPIO1_CTRL			0x92
+#define AXP_GPIO2_CTRL			0x93
+#define AXP_GPIO_CTRL_OUTPUT_LOW		0x00 /* Drive pin low */
+#define AXP_GPIO_CTRL_OUTPUT_HIGH		0x01 /* Drive pin high */
+#define AXP_GPIO_CTRL_INPUT			0x02 /* Input */
+#define AXP_GPIO_STATE			0x94
+#define AXP_GPIO_STATE_OFFSET			4
 
 extern int axp209_set_dcdc2(int mvolt);
 extern int axp209_set_dcdc3(int mvolt);
@@ -54,8 +48,3 @@ extern int axp209_set_ldo4(int mvolt);
 extern int axp209_init(void);
 extern int axp209_poweron_by_dc(void);
 extern int axp209_power_button(void);
-
-extern int axp_gpio_direction_input(struct udevice *dev, unsigned offset);
-extern int axp_gpio_direction_output(struct udevice *dev, unsigned offset, int val);
-extern int axp_gpio_get_value(struct udevice *dev, unsigned offset);
-extern int axp_gpio_set_value(struct udevice *dev, unsigned offset, int val);
diff --git a/include/axp221.h b/include/axp221.h
index f62f708..9c87162 100644
--- a/include/axp221.h
+++ b/include/axp221.h
@@ -6,12 +6,7 @@
  * SPDX-License-Identifier:	GPL-2.0+
  */
 
-struct udevice;
-
 /* Page 0 addresses */
-#define AXP221_POWER_STATUS	0x00
-#define AXP221_POWER_STATUS_VBUS_AVAIL	(1 << 5)
-#define AXP221_POWER_STATUS_VBUS_USABLE	(1 << 4)
 #define AXP221_CHIP_ID		0x03
 #define AXP221_OUTPUT_CTRL1	0x10
 #define AXP221_OUTPUT_CTRL1_DCDC0_EN	(1 << 0)
@@ -57,7 +52,16 @@ struct udevice;
 /* Page 1 addresses */
 #define AXP221_SID		0x20
 
-#define AXP_GPIO
+/* For axp_gpio.c */
+#define AXP_POWER_STATUS		0x00
+#define AXP_POWER_STATUS_VBUS_PRESENT		(1 << 5)
+#define AXP_GPIO0_CTRL			0x90
+#define AXP_GPIO1_CTRL			0x92
+#define AXP_GPIO_CTRL_OUTPUT_LOW		0x00 /* Drive pin low */
+#define AXP_GPIO_CTRL_OUTPUT_HIGH		0x01 /* Drive pin high */
+#define AXP_GPIO_CTRL_INPUT			0x02 /* Input */
+#define AXP_GPIO_STATE			0x94
+#define AXP_GPIO_STATE_OFFSET			0
 
 int axp221_set_dcdc1(unsigned int mvolt);
 int axp221_set_dcdc2(unsigned int mvolt);
@@ -74,8 +78,3 @@ int axp221_set_aldo3(unsigned int mvolt);
 int axp221_set_eldo(int eldo_num, unsigned int mvolt);
 int axp221_init(void);
 int axp221_get_sid(unsigned int *sid);
-
-int axp_gpio_direction_input(struct udevice *dev, unsigned offset);
-int axp_gpio_direction_output(struct udevice *dev, unsigned offset, int val);
-int axp_gpio_get_value(struct udevice *dev, unsigned offset);
-int axp_gpio_set_value(struct udevice *dev, unsigned offset, int val);