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-rw-r--r--drivers/gpio/Makefile1
-rw-r--r--drivers/gpio/axp_gpio.c186
-rw-r--r--drivers/gpio/sunxi_gpio.c104
3 files changed, 236 insertions, 55 deletions
diff --git a/drivers/gpio/Makefile b/drivers/gpio/Makefile
index fb40e09020b..ba9efe8d541 100644
--- a/drivers/gpio/Makefile
+++ b/drivers/gpio/Makefile
@@ -7,6 +7,7 @@
ifndef CONFIG_SPL_BUILD
obj-$(CONFIG_DM_GPIO) += gpio-uclass.o
+obj-$(CONFIG_AXP_GPIO) += axp_gpio.o
endif
/* TODO(sjg@chromium.org): Only tegra supports driver model in SPL */
ifdef CONFIG_TEGRA_GPIO
diff --git a/drivers/gpio/axp_gpio.c b/drivers/gpio/axp_gpio.c
new file mode 100644
index 00000000000..2e97cc39d68
--- /dev/null
+++ b/drivers/gpio/axp_gpio.c
@@ -0,0 +1,186 @@
+/*
+ * (C) Copyright 2015 Hans de Goede <hdegoede@redhat.com>
+ *
+ * X-Powers AXP Power Management ICs gpio driver
+ *
+ * SPDX-License-Identifier: GPL-2.0+
+ */
+
+#include <common.h>
+#include <asm/arch/gpio.h>
+#include <asm/arch/pmic_bus.h>
+#include <asm/gpio.h>
+#include <dm.h>
+#include <dm/device-internal.h>
+#include <dm/lists.h>
+#include <dm/root.h>
+#include <errno.h>
+
+#ifdef CONFIG_AXP152_POWER
+#include <axp152.h>
+#elif defined CONFIG_AXP209_POWER
+#include <axp209.h>
+#elif defined CONFIG_AXP221_POWER
+#include <axp221.h>
+#else
+#error Unknown AXP model
+#endif
+
+static int axp_gpio_set_value(struct udevice *dev, unsigned pin, int val);
+
+static u8 axp_get_gpio_ctrl_reg(unsigned pin)
+{
+ switch (pin) {
+ case 0: return AXP_GPIO0_CTRL;
+ case 1: return AXP_GPIO1_CTRL;
+#ifdef AXP_GPIO2_CTRL
+ case 2: return AXP_GPIO2_CTRL;
+#endif
+#ifdef AXP_GPIO3_CTRL
+ case 3: return AXP_GPIO3_CTRL;
+#endif
+ }
+ return 0;
+}
+
+static int axp_gpio_direction_input(struct udevice *dev, unsigned pin)
+{
+ u8 reg;
+
+ switch (pin) {
+#ifndef CONFIG_AXP152_POWER /* NA on axp152 */
+ case SUNXI_GPIO_AXP0_VBUS_DETECT:
+ return 0;
+#endif
+ default:
+ reg = axp_get_gpio_ctrl_reg(pin);
+ if (reg == 0)
+ return -EINVAL;
+
+ return pmic_bus_write(reg, AXP_GPIO_CTRL_INPUT);
+ }
+}
+
+static int axp_gpio_direction_output(struct udevice *dev, unsigned pin,
+ int val)
+{
+ __maybe_unused int ret;
+ u8 reg;
+
+ switch (pin) {
+#ifdef CONFIG_AXP221_POWER /* Only available on axp221/axp223 */
+ case SUNXI_GPIO_AXP0_VBUS_ENABLE:
+ ret = pmic_bus_clrbits(AXP221_MISC_CTRL,
+ AXP221_MISC_CTRL_N_VBUSEN_FUNC);
+ if (ret)
+ return ret;
+
+ return axp_gpio_set_value(dev, pin, val);
+#endif
+ default:
+ reg = axp_get_gpio_ctrl_reg(pin);
+ if (reg == 0)
+ return -EINVAL;
+
+ return pmic_bus_write(reg, val ? AXP_GPIO_CTRL_OUTPUT_HIGH :
+ AXP_GPIO_CTRL_OUTPUT_LOW);
+ }
+}
+
+static int axp_gpio_get_value(struct udevice *dev, unsigned pin)
+{
+ u8 reg, val, mask;
+ int ret;
+
+ switch (pin) {
+#ifndef CONFIG_AXP152_POWER /* NA on axp152 */
+ case SUNXI_GPIO_AXP0_VBUS_DETECT:
+ ret = pmic_bus_read(AXP_POWER_STATUS, &val);
+ mask = AXP_POWER_STATUS_VBUS_PRESENT;
+ break;
+#endif
+#ifdef CONFIG_AXP221_POWER /* Only available on axp221/axp223 */
+ case SUNXI_GPIO_AXP0_VBUS_ENABLE:
+ ret = pmic_bus_read(AXP221_VBUS_IPSOUT, &val);
+ mask = AXP221_VBUS_IPSOUT_DRIVEBUS;
+ break;
+#endif
+ default:
+ reg = axp_get_gpio_ctrl_reg(pin);
+ if (reg == 0)
+ return -EINVAL;
+
+ ret = pmic_bus_read(AXP_GPIO_STATE, &val);
+ mask = 1 << (pin + AXP_GPIO_STATE_OFFSET);
+ }
+ if (ret)
+ return ret;
+
+ return (val & mask) ? 1 : 0;
+}
+
+static int axp_gpio_set_value(struct udevice *dev, unsigned pin, int val)
+{
+ u8 reg;
+
+ switch (pin) {
+#ifdef CONFIG_AXP221_POWER /* Only available on axp221/axp223 */
+ case SUNXI_GPIO_AXP0_VBUS_ENABLE:
+ if (val)
+ return pmic_bus_setbits(AXP221_VBUS_IPSOUT,
+ AXP221_VBUS_IPSOUT_DRIVEBUS);
+ else
+ return pmic_bus_clrbits(AXP221_VBUS_IPSOUT,
+ AXP221_VBUS_IPSOUT_DRIVEBUS);
+#endif
+ default:
+ reg = axp_get_gpio_ctrl_reg(pin);
+ if (reg == 0)
+ return -EINVAL;
+
+ return pmic_bus_write(reg, val ? AXP_GPIO_CTRL_OUTPUT_HIGH :
+ AXP_GPIO_CTRL_OUTPUT_LOW);
+ }
+}
+
+static const struct dm_gpio_ops gpio_axp_ops = {
+ .direction_input = axp_gpio_direction_input,
+ .direction_output = axp_gpio_direction_output,
+ .get_value = axp_gpio_get_value,
+ .set_value = axp_gpio_set_value,
+};
+
+static int gpio_axp_probe(struct udevice *dev)
+{
+ struct gpio_dev_priv *uc_priv = dev_get_uclass_priv(dev);
+
+ /* Tell the uclass how many GPIOs we have */
+ uc_priv->bank_name = strdup(SUNXI_GPIO_AXP0_PREFIX);
+ uc_priv->gpio_count = SUNXI_GPIO_AXP0_GPIO_COUNT;
+
+ return 0;
+}
+
+U_BOOT_DRIVER(gpio_axp) = {
+ .name = "gpio_axp",
+ .id = UCLASS_GPIO,
+ .ops = &gpio_axp_ops,
+ .probe = gpio_axp_probe,
+};
+
+int axp_gpio_init(void)
+{
+ struct udevice *dev;
+ int ret;
+
+ ret = pmic_bus_init();
+ if (ret)
+ return ret;
+
+ /* There is no devicetree support for the axp yet, so bind directly */
+ ret = device_bind_driver(dm_root(), "gpio_axp", "AXP-gpio", &dev);
+ if (ret)
+ return ret;
+
+ return 0;
+}
diff --git a/drivers/gpio/sunxi_gpio.c b/drivers/gpio/sunxi_gpio.c
index cf5c62463ea..f9881308f42 100644
--- a/drivers/gpio/sunxi_gpio.c
+++ b/drivers/gpio/sunxi_gpio.c
@@ -15,15 +15,10 @@
#include <errno.h>
#include <fdtdec.h>
#include <malloc.h>
+#include <asm/arch/gpio.h>
#include <asm/io.h>
#include <asm/gpio.h>
#include <dm/device-internal.h>
-#ifdef CONFIG_AXP209_POWER
-#include <axp209.h>
-#endif
-#ifdef CONFIG_AXP221_POWER
-#include <axp221.h>
-#endif
DECLARE_GLOBAL_DATA_PTR;
@@ -79,10 +74,6 @@ int gpio_free(unsigned gpio)
int gpio_direction_input(unsigned gpio)
{
-#ifdef AXP_GPIO
- if (gpio >= SUNXI_GPIO_AXP0_START)
- return axp_gpio_direction_input(gpio - SUNXI_GPIO_AXP0_START);
-#endif
sunxi_gpio_set_cfgpin(gpio, SUNXI_GPIO_INPUT);
return 0;
@@ -90,11 +81,6 @@ int gpio_direction_input(unsigned gpio)
int gpio_direction_output(unsigned gpio, int value)
{
-#ifdef AXP_GPIO
- if (gpio >= SUNXI_GPIO_AXP0_START)
- return axp_gpio_direction_output(gpio - SUNXI_GPIO_AXP0_START,
- value);
-#endif
sunxi_gpio_set_cfgpin(gpio, SUNXI_GPIO_OUTPUT);
return sunxi_gpio_output(gpio, value);
@@ -102,36 +88,14 @@ int gpio_direction_output(unsigned gpio, int value)
int gpio_get_value(unsigned gpio)
{
-#ifdef AXP_GPIO
- if (gpio >= SUNXI_GPIO_AXP0_START)
- return axp_gpio_get_value(gpio - SUNXI_GPIO_AXP0_START);
-#endif
return sunxi_gpio_input(gpio);
}
int gpio_set_value(unsigned gpio, int value)
{
-#ifdef AXP_GPIO
- if (gpio >= SUNXI_GPIO_AXP0_START)
- return axp_gpio_set_value(gpio - SUNXI_GPIO_AXP0_START, value);
-#endif
return sunxi_gpio_output(gpio, value);
}
-int sunxi_name_to_gpio_bank(const char *name)
-{
- int group = 0;
-
- if (*name == 'P' || *name == 'p')
- name++;
- if (*name >= 'A') {
- group = *name - (*name > 'a' ? 'a' : 'A');
- return group;
- }
-
- return -1;
-}
-
int sunxi_name_to_gpio(const char *name)
{
int group = 0;
@@ -139,21 +103,6 @@ int sunxi_name_to_gpio(const char *name)
long pin;
char *eptr;
-#ifdef AXP_GPIO
- if (strncasecmp(name, "AXP0-", 5) == 0) {
- name += 5;
- if (strcmp(name, "VBUS-DETECT") == 0)
- return SUNXI_GPIO_AXP0_START +
- SUNXI_GPIO_AXP0_VBUS_DETECT;
- if (strcmp(name, "VBUS-ENABLE") == 0)
- return SUNXI_GPIO_AXP0_START +
- SUNXI_GPIO_AXP0_VBUS_ENABLE;
- pin = simple_strtol(name, &eptr, 10);
- if (!*name || *eptr)
- return -1;
- return SUNXI_GPIO_AXP0_START + pin;
- }
-#endif
if (*name == 'P' || *name == 'p')
name++;
if (*name >= 'A') {
@@ -171,7 +120,44 @@ int sunxi_name_to_gpio(const char *name)
}
#endif
+int sunxi_name_to_gpio_bank(const char *name)
+{
+ int group = 0;
+
+ if (*name == 'P' || *name == 'p')
+ name++;
+ if (*name >= 'A') {
+ group = *name - (*name > 'a' ? 'a' : 'A');
+ return group;
+ }
+
+ return -1;
+}
+
#ifdef CONFIG_DM_GPIO
+/* TODO(sjg@chromium.org): Remove this function and use device tree */
+int sunxi_name_to_gpio(const char *name)
+{
+ unsigned int gpio;
+ int ret;
+#if !defined CONFIG_SPL_BUILD && defined CONFIG_AXP_GPIO
+ char lookup[8];
+
+ if (strcasecmp(name, "AXP0-VBUS-DETECT") == 0) {
+ sprintf(lookup, SUNXI_GPIO_AXP0_PREFIX "%d",
+ SUNXI_GPIO_AXP0_VBUS_DETECT);
+ name = lookup;
+ } else if (strcasecmp(name, "AXP0-VBUS-ENABLE") == 0) {
+ sprintf(lookup, SUNXI_GPIO_AXP0_PREFIX "%d",
+ SUNXI_GPIO_AXP0_VBUS_ENABLE);
+ name = lookup;
+ }
+#endif
+ ret = gpio_lookup_name(name, NULL, NULL, &gpio);
+
+ return ret ? ret : gpio;
+}
+
static int sunxi_gpio_direction_input(struct udevice *dev, unsigned offset)
{
struct sunxi_gpio_platdata *plat = dev_get_platdata(dev);
@@ -249,10 +235,11 @@ static char *gpio_bank_name(int bank)
{
char *name;
- name = malloc(2);
+ name = malloc(3);
if (name) {
- name[0] = 'A' + bank;
- name[1] = '\0';
+ name[0] = 'P';
+ name[1] = 'A' + bank;
+ name[2] = '\0';
}
return name;
@@ -310,7 +297,14 @@ static int gpio_sunxi_bind(struct udevice *parent)
}
static const struct udevice_id sunxi_gpio_ids[] = {
+ { .compatible = "allwinner,sun4i-a10-pinctrl" },
+ { .compatible = "allwinner,sun5i-a10s-pinctrl" },
+ { .compatible = "allwinner,sun5i-a13-pinctrl" },
+ { .compatible = "allwinner,sun6i-a31-pinctrl" },
+ { .compatible = "allwinner,sun6i-a31s-pinctrl" },
{ .compatible = "allwinner,sun7i-a20-pinctrl" },
+ { .compatible = "allwinner,sun8i-a23-pinctrl" },
+ { .compatible = "allwinner,sun9i-a80-pinctrl" },
{ }
};
generated by cgit v1.2.3 (git 2.0.4) at 2025-07-24 16:25:03 +0000