diff options
Diffstat (limited to 'drivers/gpio')
| -rw-r--r-- | drivers/gpio/Makefile | 1 | ||||
| -rw-r--r-- | drivers/gpio/axp_gpio.c | 147 | ||||
| -rw-r--r-- | drivers/gpio/sunxi_gpio.c | 17 |
3 files changed, 154 insertions, 11 deletions
diff --git a/drivers/gpio/Makefile b/drivers/gpio/Makefile index fb40e09..ba9efe8 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 0000000..d04ec22 --- /dev/null +++ b/drivers/gpio/axp_gpio.c @@ -0,0 +1,147 @@ +/* + * (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 <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 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; +} + +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); + } +} + +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); + } +} + +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; +} + +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); + } +} + +int axp_gpio_init(void) +{ + int ret; + + ret = pmic_bus_init(); + if (ret) + return ret; + + return 0; +} diff --git a/drivers/gpio/sunxi_gpio.c b/drivers/gpio/sunxi_gpio.c index 0774b70..5a0b5e4 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; @@ -79,7 +74,7 @@ int gpio_free(unsigned gpio) int gpio_direction_input(unsigned gpio) { -#ifdef AXP_GPIO +#if !defined CONFIG_SPL_BUILD && defined CONFIG_AXP_GPIO if (gpio >= SUNXI_GPIO_AXP0_START) return axp_gpio_direction_input(NULL, gpio - SUNXI_GPIO_AXP0_START); #endif @@ -90,7 +85,7 @@ int gpio_direction_input(unsigned gpio) int gpio_direction_output(unsigned gpio, int value) { -#ifdef AXP_GPIO +#if !defined CONFIG_SPL_BUILD && defined CONFIG_AXP_GPIO if (gpio >= SUNXI_GPIO_AXP0_START) return axp_gpio_direction_output(NULL, gpio - SUNXI_GPIO_AXP0_START, value); @@ -102,7 +97,7 @@ int gpio_direction_output(unsigned gpio, int value) int gpio_get_value(unsigned gpio) { -#ifdef AXP_GPIO +#if !defined CONFIG_SPL_BUILD && defined CONFIG_AXP_GPIO if (gpio >= SUNXI_GPIO_AXP0_START) return axp_gpio_get_value(NULL, gpio - SUNXI_GPIO_AXP0_START); #endif @@ -111,7 +106,7 @@ int gpio_get_value(unsigned gpio) int gpio_set_value(unsigned gpio, int value) { -#ifdef AXP_GPIO +#if !defined CONFIG_SPL_BUILD && defined CONFIG_AXP_GPIO if (gpio >= SUNXI_GPIO_AXP0_START) return axp_gpio_set_value(NULL, gpio - SUNXI_GPIO_AXP0_START, value); #endif @@ -125,7 +120,7 @@ int sunxi_name_to_gpio(const char *name) long pin; char *eptr; -#ifdef AXP_GPIO +#if !defined CONFIG_SPL_BUILD && defined CONFIG_AXP_GPIO if (strncasecmp(name, "AXP0-", 5) == 0) { name += 5; if (strcmp(name, "VBUS-DETECT") == 0) |