diff options
Diffstat (limited to 'drivers/power')
| -rw-r--r-- | drivers/power/Kconfig | 54 | ||||
| -rw-r--r-- | drivers/power/axp209.c | 72 | ||||
| -rw-r--r-- | drivers/power/axp221.c | 245 |
3 files changed, 333 insertions, 38 deletions
diff --git a/drivers/power/Kconfig b/drivers/power/Kconfig index 1ec7c0e59a..e68e16b321 100644 --- a/drivers/power/Kconfig +++ b/drivers/power/Kconfig @@ -1,47 +1,65 @@ config AXP221_POWER - boolean "axp221 pmic support" - depends on MACH_SUN6I + boolean "axp221 / axp223 pmic support" + depends on MACH_SUN6I || MACH_SUN8I default y ---help--- - Say y here to enable support for the axp221 pmic found on most sun6i - (A31) boards. + Say y here to enable support for the axp221 / axp223 pmic found on most + sun6i (A31) / sun8i (A23) boards. + +config AXP221_DCDC1_VOLT + int "axp221 dcdc1 voltage" + depends on AXP221_POWER + default 3000 + ---help--- + Set the voltage (mV) to program the axp221 dcdc1 at, set to 0 to + disable dcdc1. This is typically used as generic 3.3V IO voltage for + things like GPIO-s, sdcard interfaces, etc. On most boards this is + undervolted to 3.0V to safe battery. config AXP221_DLDO1_VOLT int "axp221 dldo1 voltage" depends on AXP221_POWER - default -1 + default 0 ---help--- - Set the voltage (mV) to program the axp221 dldo1 at, set to -1 to - disable dldo1. + Set the voltage (mV) to program the axp221 dldo1 at, set to 0 to + disable dldo1. On sun6i (A31) boards with ethernet this is often used + to power the ethernet phy. On sun8i (A23) boards this is often used to + power the wifi. config AXP221_DLDO4_VOLT int "axp221 dldo4 voltage" depends on AXP221_POWER - default -1 + default 0 ---help--- - Set the voltage (mV) to program the axp221 dldo4 at, set to -1 to + Set the voltage (mV) to program the axp221 dldo4 at, set to 0 to disable dldo4. config AXP221_ALDO1_VOLT int "axp221 aldo1 voltage" depends on AXP221_POWER - default -1 + default 0 ---help--- - Set the voltage (mV) to program the axp221 aldo1 at, set to -1 to - disable aldo1. + Set the voltage (mV) to program the axp221 aldo1 at, set to 0 to + disable aldo1. On sun6i (A31) boards which have a wifi module this is + often used to power the wifi module. config AXP221_ALDO2_VOLT int "axp221 aldo2 voltage" depends on AXP221_POWER - default -1 + default 0 if MACH_SUN6I + default 2500 if MACH_SUN8I ---help--- - Set the voltage (mV) to program the axp221 aldo2 at, set to -1 to - disable aldo2. + Set the voltage (mV) to program the axp221 aldo2 at, set to 0 to + disable aldo2. On sun6i (A31) boards this is typically unused and + should be disabled, if it is used for LPDDR2 it should be set to 1.8V. + On sun8i (A23) this is typically connected to VDD-DLL and must be set + to 2.5V. config AXP221_ALDO3_VOLT int "axp221 aldo3 voltage" depends on AXP221_POWER - default -1 + default 3000 ---help--- - Set the voltage (mV) to program the axp221 aldo3 at, set to -1 to - disable aldo3. + Set the voltage (mV) to program the axp221 aldo3 at, set to 0 to + disable aldo3. This is typically connected to VCC-PLL and AVCC and + must be set to 3V. diff --git a/drivers/power/axp209.c b/drivers/power/axp209.c index 9798e5bf7c..3b1a6a73ae 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/drivers/power/axp221.c b/drivers/power/axp221.c index 941193a19d..4c86f099a2 100644 --- a/drivers/power/axp221.c +++ b/drivers/power/axp221.c @@ -1,4 +1,10 @@ /* + * AXP221 and AXP223 driver + * + * IMPORTANT when making changes to this file check that the registers + * used are the same for the axp221 and axp223. + * + * (C) Copyright 2014 Hans de Goede <hdegoede@redhat.com> * (C) Copyright 2013 Oliver Schinagl <oliver@schinagl.nl> * * SPDX-License-Identifier: GPL-2.0+ @@ -7,8 +13,50 @@ #include <common.h> #include <errno.h> #include <asm/arch/p2wi.h> +#include <asm/arch/rsb.h> #include <axp221.h> +/* + * The axp221 uses the p2wi bus, the axp223 is identical (for all registers + * used sofar) but uses the rsb bus. These functions abstract this. + */ +static int pmic_bus_init(void) +{ +#ifdef CONFIG_MACH_SUN6I + p2wi_init(); + return p2wi_change_to_p2wi_mode(AXP221_CHIP_ADDR, AXP221_CTRL_ADDR, + AXP221_INIT_DATA); +#else + int ret; + + rsb_init(); + + ret = rsb_set_device_mode(AXP223_DEVICE_MODE_DATA); + if (ret) + return ret; + + return rsb_set_device_address(AXP223_DEVICE_ADDR, AXP223_RUNTIME_ADDR); +#endif +} + +static int pmic_bus_read(const u8 addr, u8 *data) +{ +#ifdef CONFIG_MACH_SUN6I + return p2wi_read(addr, data); +#else + return rsb_read(AXP223_RUNTIME_ADDR, addr, data); +#endif +} + +static int pmic_bus_write(const u8 addr, u8 data) +{ +#ifdef CONFIG_MACH_SUN6I + return p2wi_write(addr, data); +#else + return rsb_write(AXP223_RUNTIME_ADDR, addr, data); +#endif +} + static u8 axp221_mvolt_to_cfg(int mvolt, int min, int max, int div) { if (mvolt < min) @@ -24,12 +72,25 @@ static int axp221_setbits(u8 reg, u8 bits) int ret; u8 val; - ret = p2wi_read(reg, &val); + ret = pmic_bus_read(reg, &val); if (ret) return ret; val |= bits; - return p2wi_write(reg, val); + return pmic_bus_write(reg, val); +} + +static int axp221_clrbits(u8 reg, u8 bits) +{ + int ret; + u8 val; + + ret = pmic_bus_read(reg, &val); + if (ret) + return ret; + + val &= ~bits; + return pmic_bus_write(reg, val); } int axp221_set_dcdc1(unsigned int mvolt) @@ -37,40 +98,89 @@ int axp221_set_dcdc1(unsigned int mvolt) int ret; u8 cfg = axp221_mvolt_to_cfg(mvolt, 1600, 3400, 100); - ret = p2wi_write(AXP221_DCDC1_CTRL, cfg); + if (mvolt == 0) + return axp221_clrbits(AXP221_OUTPUT_CTRL1, + AXP221_OUTPUT_CTRL1_DCDC1_EN); + + ret = pmic_bus_write(AXP221_DCDC1_CTRL, cfg); if (ret) return ret; - return axp221_setbits(AXP221_OUTPUT_CTRL2, - AXP221_OUTPUT_CTRL2_DCDC1_EN); + ret = axp221_setbits(AXP221_OUTPUT_CTRL2, + AXP221_OUTPUT_CTRL2_DCDC1SW_EN); + if (ret) + return ret; + + return axp221_setbits(AXP221_OUTPUT_CTRL1, + AXP221_OUTPUT_CTRL1_DCDC1_EN); } int axp221_set_dcdc2(unsigned int mvolt) { + int ret; u8 cfg = axp221_mvolt_to_cfg(mvolt, 600, 1540, 20); - return p2wi_write(AXP221_DCDC2_CTRL, cfg); + if (mvolt == 0) + return axp221_clrbits(AXP221_OUTPUT_CTRL1, + AXP221_OUTPUT_CTRL1_DCDC2_EN); + + ret = pmic_bus_write(AXP221_DCDC2_CTRL, cfg); + if (ret) + return ret; + + return axp221_setbits(AXP221_OUTPUT_CTRL1, + AXP221_OUTPUT_CTRL1_DCDC2_EN); } int axp221_set_dcdc3(unsigned int mvolt) { + int ret; u8 cfg = axp221_mvolt_to_cfg(mvolt, 600, 1860, 20); - return p2wi_write(AXP221_DCDC3_CTRL, cfg); + if (mvolt == 0) + return axp221_clrbits(AXP221_OUTPUT_CTRL1, + AXP221_OUTPUT_CTRL1_DCDC3_EN); + + ret = pmic_bus_write(AXP221_DCDC3_CTRL, cfg); + if (ret) + return ret; + + return axp221_setbits(AXP221_OUTPUT_CTRL1, + AXP221_OUTPUT_CTRL1_DCDC3_EN); } int axp221_set_dcdc4(unsigned int mvolt) { + int ret; u8 cfg = axp221_mvolt_to_cfg(mvolt, 600, 1540, 20); - return p2wi_write(AXP221_DCDC4_CTRL, cfg); + if (mvolt == 0) + return axp221_clrbits(AXP221_OUTPUT_CTRL1, + AXP221_OUTPUT_CTRL1_DCDC4_EN); + + ret = pmic_bus_write(AXP221_DCDC4_CTRL, cfg); + if (ret) + return ret; + + return axp221_setbits(AXP221_OUTPUT_CTRL1, + AXP221_OUTPUT_CTRL1_DCDC4_EN); } int axp221_set_dcdc5(unsigned int mvolt) { + int ret; u8 cfg = axp221_mvolt_to_cfg(mvolt, 1000, 2550, 50); - return p2wi_write(AXP221_DCDC5_CTRL, cfg); + if (mvolt == 0) + return axp221_clrbits(AXP221_OUTPUT_CTRL1, + AXP221_OUTPUT_CTRL1_DCDC5_EN); + + ret = pmic_bus_write(AXP221_DCDC5_CTRL, cfg); + if (ret) + return ret; + + return axp221_setbits(AXP221_OUTPUT_CTRL1, + AXP221_OUTPUT_CTRL1_DCDC5_EN); } int axp221_set_dldo1(unsigned int mvolt) @@ -78,7 +188,11 @@ int axp221_set_dldo1(unsigned int mvolt) int ret; u8 cfg = axp221_mvolt_to_cfg(mvolt, 700, 3300, 100); - ret = p2wi_write(AXP221_DLDO1_CTRL, cfg); + if (mvolt == 0) + return axp221_clrbits(AXP221_OUTPUT_CTRL2, + AXP221_OUTPUT_CTRL2_DLDO1_EN); + + ret = pmic_bus_write(AXP221_DLDO1_CTRL, cfg); if (ret) return ret; @@ -91,7 +205,11 @@ int axp221_set_dldo2(unsigned int mvolt) int ret; u8 cfg = axp221_mvolt_to_cfg(mvolt, 700, 3300, 100); - ret = p2wi_write(AXP221_DLDO2_CTRL, cfg); + if (mvolt == 0) + return axp221_clrbits(AXP221_OUTPUT_CTRL2, + AXP221_OUTPUT_CTRL2_DLDO2_EN); + + ret = pmic_bus_write(AXP221_DLDO2_CTRL, cfg); if (ret) return ret; @@ -104,7 +222,11 @@ int axp221_set_dldo3(unsigned int mvolt) int ret; u8 cfg = axp221_mvolt_to_cfg(mvolt, 700, 3300, 100); - ret = p2wi_write(AXP221_DLDO3_CTRL, cfg); + if (mvolt == 0) + return axp221_clrbits(AXP221_OUTPUT_CTRL2, + AXP221_OUTPUT_CTRL2_DLDO3_EN); + + ret = pmic_bus_write(AXP221_DLDO3_CTRL, cfg); if (ret) return ret; @@ -117,7 +239,11 @@ int axp221_set_dldo4(unsigned int mvolt) int ret; u8 cfg = axp221_mvolt_to_cfg(mvolt, 700, 3300, 100); - ret = p2wi_write(AXP221_DLDO4_CTRL, cfg); + if (mvolt == 0) + return axp221_clrbits(AXP221_OUTPUT_CTRL2, + AXP221_OUTPUT_CTRL2_DLDO4_EN); + + ret = pmic_bus_write(AXP221_DLDO4_CTRL, cfg); if (ret) return ret; @@ -130,7 +256,11 @@ int axp221_set_aldo1(unsigned int mvolt) int ret; u8 cfg = axp221_mvolt_to_cfg(mvolt, 700, 3300, 100); - ret = p2wi_write(AXP221_ALDO1_CTRL, cfg); + if (mvolt == 0) + return axp221_clrbits(AXP221_OUTPUT_CTRL1, + AXP221_OUTPUT_CTRL1_ALDO1_EN); + + ret = pmic_bus_write(AXP221_ALDO1_CTRL, cfg); if (ret) return ret; @@ -143,7 +273,11 @@ int axp221_set_aldo2(unsigned int mvolt) int ret; u8 cfg = axp221_mvolt_to_cfg(mvolt, 700, 3300, 100); - ret = p2wi_write(AXP221_ALDO2_CTRL, cfg); + if (mvolt == 0) + return axp221_clrbits(AXP221_OUTPUT_CTRL1, + AXP221_OUTPUT_CTRL1_ALDO2_EN); + + ret = pmic_bus_write(AXP221_ALDO2_CTRL, cfg); if (ret) return ret; @@ -156,7 +290,11 @@ int axp221_set_aldo3(unsigned int mvolt) int ret; u8 cfg = axp221_mvolt_to_cfg(mvolt, 700, 3300, 100); - ret = p2wi_write(AXP221_ALDO3_CTRL, cfg); + if (mvolt == 0) + return axp221_clrbits(AXP221_OUTPUT_CTRL3, + AXP221_OUTPUT_CTRL3_ALDO3_EN); + + ret = pmic_bus_write(AXP221_ALDO3_CTRL, cfg); if (ret) return ret; @@ -166,21 +304,88 @@ int axp221_set_aldo3(unsigned int mvolt) int axp221_init(void) { + /* This cannot be 0 because it is used in SPL before BSS is ready */ + static int needs_init = 1; u8 axp_chip_id; int ret; - p2wi_init(); - ret = p2wi_change_to_p2wi_mode(AXP221_CHIP_ADDR, AXP221_CTRL_ADDR, - AXP221_INIT_DATA); + if (!needs_init) + return 0; + + ret = pmic_bus_init(); if (ret) return ret; - ret = p2wi_read(AXP221_CHIP_ID, &axp_chip_id); + ret = pmic_bus_read(AXP221_CHIP_ID, &axp_chip_id); if (ret) return ret; if (!(axp_chip_id == 0x6 || axp_chip_id == 0x7 || axp_chip_id == 0x17)) return -ENODEV; + needs_init = 0; return 0; } + +int axp221_get_sid(unsigned int *sid) +{ + u8 *dest = (u8 *)sid; + int i, ret; + + ret = axp221_init(); + if (ret) + return ret; + + ret = pmic_bus_write(AXP221_PAGE, 1); + if (ret) + return ret; + + for (i = 0; i < 16; i++) { + ret = pmic_bus_read(AXP221_SID + i, &dest[i]); + if (ret) + return ret; + } + + pmic_bus_write(AXP221_PAGE, 0); + + for (i = 0; i < 4; i++) + sid[i] = be32_to_cpu(sid[i]); + + return 0; +} + +static int axp_drivebus_setup(void) +{ + int ret; + + ret = axp221_init(); + if (ret) + return ret; + + /* Set N_VBUSEN pin to output / DRIVEBUS function */ + return axp221_clrbits(AXP221_MISC_CTRL, AXP221_MISC_CTRL_N_VBUSEN_FUNC); +} + +int axp_drivebus_enable(void) +{ + int ret; + + ret = axp_drivebus_setup(); + if (ret) + return ret; + + /* Set DRIVEBUS high */ + return axp221_setbits(AXP221_VBUS_IPSOUT, AXP221_VBUS_IPSOUT_DRIVEBUS); +} + +int axp_drivebus_disable(void) +{ + int ret; + + ret = axp_drivebus_setup(); + if (ret) + return ret; + + /* Set DRIVEBUS low */ + return axp221_clrbits(AXP221_VBUS_IPSOUT, AXP221_VBUS_IPSOUT_DRIVEBUS); +} |