diff options
| -rw-r--r-- | arch/arm/include/asm/arch-sunxi/gpio.h | 3 | ||||
| -rw-r--r-- | drivers/gpio/sunxi_gpio.c | 30 | ||||
| -rw-r--r-- | drivers/power/axp209.c | 72 | ||||
| -rw-r--r-- | include/axp209.h | 7 |
4 files changed, 112 insertions, 0 deletions
diff --git a/arch/arm/include/asm/arch-sunxi/gpio.h b/arch/arm/include/asm/arch-sunxi/gpio.h index 6730879..32941cb 100644 --- a/arch/arm/include/asm/arch-sunxi/gpio.h +++ b/arch/arm/include/asm/arch-sunxi/gpio.h @@ -114,6 +114,7 @@ enum sunxi_gpio_number { SUNXI_GPIO_I_START = SUNXI_GPIO_NEXT(SUNXI_GPIO_H), SUNXI_GPIO_L_START = 352, SUNXI_GPIO_M_START = SUNXI_GPIO_NEXT(SUNXI_GPIO_L), + SUNXI_GPIO_AXP0_START = 1024, }; /* SUNXI GPIO number definitions */ @@ -129,6 +130,8 @@ enum sunxi_gpio_number { #define SUNXI_GPL(_nr) (SUNXI_GPIO_L_START + (_nr)) #define SUNXI_GPM(_nr) (SUNXI_GPIO_M_START + (_nr)) +#define SUNXI_GPAXP0(_nr) (SUNXI_GPIO_AXP0_START + (_nr)) + /* GPIO pin function config */ #define SUNXI_GPIO_INPUT 0 #define SUNXI_GPIO_OUTPUT 1 diff --git a/drivers/gpio/sunxi_gpio.c b/drivers/gpio/sunxi_gpio.c index 2fa50f9..6296092 100644 --- a/drivers/gpio/sunxi_gpio.c +++ b/drivers/gpio/sunxi_gpio.c @@ -18,6 +18,9 @@ #include <asm/io.h> #include <asm/gpio.h> #include <dm/device-internal.h> +#ifdef CONFIG_AXP209_POWER +#include <axp209.h> +#endif DECLARE_GLOBAL_DATA_PTR; @@ -73,6 +76,10 @@ 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; @@ -80,6 +87,11 @@ 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); @@ -87,11 +99,19 @@ 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); } @@ -101,6 +121,16 @@ int sunxi_name_to_gpio(const char *name) int groupsize = 9 * 32; long pin; char *eptr; + +#ifdef AXP_GPIO + if (strncasecmp(name, "AXP0-", 5) == 0) { + name += 5; + 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') { diff --git a/drivers/power/axp209.c b/drivers/power/axp209.c index 9798e5b..3b1a6a7 100644 --- a/drivers/power/axp209.c +++ b/drivers/power/axp209.c @@ -18,6 +18,11 @@ enum axp209_reg { AXP209_LDO3_VOLTAGE = 0x29, 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) @@ -27,6 +32,15 @@ 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 */ + static int axp209_write(enum axp209_reg reg, u8 val) { return i2c_write(0x34, reg, 1, &val, 1); @@ -165,3 +179,61 @@ int axp209_power_button(void) return v & AXP209_IRQ5_PEK_DOWN; } + +static u8 axp209_get_gpio_ctrl_reg(unsigned int pin) +{ + switch (pin) { + case 0: return AXP209_GPIO0_CTRL; + case 1: return AXP209_GPIO1_CTRL; + case 2: return AXP209_GPIO2_CTRL; + case 3: return AXP209_GPIO3_CTRL; + } + return 0; +} + +int axp_gpio_direction_input(unsigned int pin) +{ + u8 reg = axp209_get_gpio_ctrl_reg(pin); + /* GPIO3 is "special" */ + u8 val = (pin == 3) ? AXP209_GPIO3_INPUT : AXP209_GPIO_INPUT; + + return axp209_write(reg, val); +} + +int axp_gpio_direction_output(unsigned int pin, unsigned int val) +{ + u8 reg = axp209_get_gpio_ctrl_reg(pin); + + if (val) { + val = (pin == 3) ? AXP209_GPIO3_OUTPUT_HIGH : + AXP209_GPIO_OUTPUT_HIGH; + } else { + val = (pin == 3) ? AXP209_GPIO3_OUTPUT_LOW : + AXP209_GPIO_OUTPUT_LOW; + } + + return axp209_write(reg, val); +} + +int axp_gpio_get_value(unsigned int pin) +{ + u8 val, mask; + int rc; + + if (pin == 3) { + rc = axp209_read(AXP209_GPIO3_CTRL, &val); + mask = 1; + } else { + rc = axp209_read(AXP209_GPIO_STATE, &val); + mask = 1 << (pin + 4); + } + if (rc) + return rc; + + return (val & mask) ? 1 : 0; +} + +int axp_gpio_set_value(unsigned int pin, unsigned int val) +{ + return axp_gpio_direction_output(pin, val); +} diff --git a/include/axp209.h b/include/axp209.h index 21efce6..0436249 100644 --- a/include/axp209.h +++ b/include/axp209.h @@ -4,6 +4,8 @@ * SPDX-License-Identifier: GPL-2.0+ */ +#define AXP_GPIO + extern int axp209_set_dcdc2(int mvolt); extern int axp209_set_dcdc3(int mvolt); extern int axp209_set_ldo2(int mvolt); @@ -12,3 +14,8 @@ 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(unsigned int pin); +extern int axp_gpio_direction_output(unsigned int pin, unsigned int val); +extern int axp_gpio_get_value(unsigned int pin); +extern int axp_gpio_set_value(unsigned int pin, unsigned int val); |