diff options
Diffstat (limited to 'drivers/power/axp221.c')
| -rw-r--r-- | drivers/power/axp221.c | 88 |
1 files changed, 67 insertions, 21 deletions
diff --git a/drivers/power/axp221.c b/drivers/power/axp221.c index 826567a..4667579 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 +72,12 @@ 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); } int axp221_set_dcdc1(unsigned int mvolt) @@ -37,7 +85,7 @@ 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); + ret = pmic_bus_write(AXP221_DCDC1_CTRL, cfg); if (ret) return ret; @@ -49,28 +97,28 @@ int axp221_set_dcdc2(unsigned int mvolt) { u8 cfg = axp221_mvolt_to_cfg(mvolt, 600, 1540, 20); - return p2wi_write(AXP221_DCDC2_CTRL, cfg); + return pmic_bus_write(AXP221_DCDC2_CTRL, cfg); } int axp221_set_dcdc3(unsigned int mvolt) { u8 cfg = axp221_mvolt_to_cfg(mvolt, 600, 1860, 20); - return p2wi_write(AXP221_DCDC3_CTRL, cfg); + return pmic_bus_write(AXP221_DCDC3_CTRL, cfg); } int axp221_set_dcdc4(unsigned int mvolt) { u8 cfg = axp221_mvolt_to_cfg(mvolt, 600, 1540, 20); - return p2wi_write(AXP221_DCDC4_CTRL, cfg); + return pmic_bus_write(AXP221_DCDC4_CTRL, cfg); } int axp221_set_dcdc5(unsigned int mvolt) { u8 cfg = axp221_mvolt_to_cfg(mvolt, 1000, 2550, 50); - return p2wi_write(AXP221_DCDC5_CTRL, cfg); + return pmic_bus_write(AXP221_DCDC5_CTRL, cfg); } int axp221_set_dldo1(unsigned int mvolt) @@ -78,7 +126,7 @@ 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); + ret = pmic_bus_write(AXP221_DLDO1_CTRL, cfg); if (ret) return ret; @@ -91,7 +139,7 @@ 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); + ret = pmic_bus_write(AXP221_DLDO2_CTRL, cfg); if (ret) return ret; @@ -104,7 +152,7 @@ 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); + ret = pmic_bus_write(AXP221_DLDO3_CTRL, cfg); if (ret) return ret; @@ -117,7 +165,7 @@ 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); + ret = pmic_bus_write(AXP221_DLDO4_CTRL, cfg); if (ret) return ret; @@ -130,7 +178,7 @@ 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); + ret = pmic_bus_write(AXP221_ALDO1_CTRL, cfg); if (ret) return ret; @@ -143,7 +191,7 @@ 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); + ret = pmic_bus_write(AXP221_ALDO2_CTRL, cfg); if (ret) return ret; @@ -156,7 +204,7 @@ 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); + ret = pmic_bus_write(AXP221_ALDO3_CTRL, cfg); if (ret) return ret; @@ -169,13 +217,11 @@ int axp221_init(void) u8 axp_chip_id; int ret; - p2wi_init(); - ret = p2wi_change_to_p2wi_mode(AXP221_CHIP_ADDR, AXP221_CTRL_ADDR, - AXP221_INIT_DATA); + 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; @@ -194,17 +240,17 @@ int axp221_get_sid(unsigned int *sid) if (ret) return ret; - ret = p2wi_write(AXP221_PAGE, 1); + ret = pmic_bus_write(AXP221_PAGE, 1); if (ret) return ret; for (i = 0; i < 16; i++) { - ret = p2wi_read(AXP221_SID + i, &dest[i]); + ret = pmic_bus_read(AXP221_SID + i, &dest[i]); if (ret) return ret; } - p2wi_write(AXP221_PAGE, 0); + pmic_bus_write(AXP221_PAGE, 0); for (i = 0; i < 4; i++) sid[i] = be32_to_cpu(sid[i]); |