1 // SPDX-License-Identifier: GPL-2.0+ 2 /* 3 * AXP809 driver based on AXP221 driver 4 * 5 * 6 * (C) Copyright 2016 Chen-Yu Tsai <wens@csie.org> 7 * 8 * Based on axp221.c 9 * (C) Copyright 2014 Hans de Goede <hdegoede@redhat.com> 10 * (C) Copyright 2013 Oliver Schinagl <oliver@schinagl.nl> 11 */ 12 13 #include <common.h> 14 #include <errno.h> 15 #include <asm/arch/gpio.h> 16 #include <asm/arch/pmic_bus.h> 17 #include <axp_pmic.h> 18 19 static u8 axp809_mvolt_to_cfg(int mvolt, int min, int max, int div) 20 { 21 if (mvolt < min) 22 mvolt = min; 23 else if (mvolt > max) 24 mvolt = max; 25 26 return (mvolt - min) / div; 27 } 28 29 int axp_set_dcdc1(unsigned int mvolt) 30 { 31 int ret; 32 u8 cfg = axp809_mvolt_to_cfg(mvolt, 1600, 3400, 100); 33 34 if (mvolt == 0) 35 return pmic_bus_clrbits(AXP809_OUTPUT_CTRL1, 36 AXP809_OUTPUT_CTRL1_DCDC1_EN); 37 38 ret = pmic_bus_write(AXP809_DCDC1_CTRL, cfg); 39 if (ret) 40 return ret; 41 42 ret = pmic_bus_setbits(AXP809_OUTPUT_CTRL2, 43 AXP809_OUTPUT_CTRL2_DC1SW_EN); 44 if (ret) 45 return ret; 46 47 return pmic_bus_setbits(AXP809_OUTPUT_CTRL1, 48 AXP809_OUTPUT_CTRL1_DCDC1_EN); 49 } 50 51 int axp_set_dcdc2(unsigned int mvolt) 52 { 53 int ret; 54 u8 cfg = axp809_mvolt_to_cfg(mvolt, 600, 1540, 20); 55 56 if (mvolt == 0) 57 return pmic_bus_clrbits(AXP809_OUTPUT_CTRL1, 58 AXP809_OUTPUT_CTRL1_DCDC2_EN); 59 60 ret = pmic_bus_write(AXP809_DCDC2_CTRL, cfg); 61 if (ret) 62 return ret; 63 64 return pmic_bus_setbits(AXP809_OUTPUT_CTRL1, 65 AXP809_OUTPUT_CTRL1_DCDC2_EN); 66 } 67 68 int axp_set_dcdc3(unsigned int mvolt) 69 { 70 int ret; 71 u8 cfg = axp809_mvolt_to_cfg(mvolt, 600, 1860, 20); 72 73 if (mvolt == 0) 74 return pmic_bus_clrbits(AXP809_OUTPUT_CTRL1, 75 AXP809_OUTPUT_CTRL1_DCDC3_EN); 76 77 ret = pmic_bus_write(AXP809_DCDC3_CTRL, cfg); 78 if (ret) 79 return ret; 80 81 return pmic_bus_setbits(AXP809_OUTPUT_CTRL1, 82 AXP809_OUTPUT_CTRL1_DCDC3_EN); 83 } 84 85 int axp_set_dcdc4(unsigned int mvolt) 86 { 87 int ret; 88 u8 cfg = axp809_mvolt_to_cfg(mvolt, 600, 1540, 20); 89 90 if (mvolt >= 1540) 91 cfg = 0x30 + axp809_mvolt_to_cfg(mvolt, 1800, 2600, 100); 92 93 if (mvolt == 0) 94 return pmic_bus_clrbits(AXP809_OUTPUT_CTRL1, 95 AXP809_OUTPUT_CTRL1_DCDC4_EN); 96 97 ret = pmic_bus_write(AXP809_DCDC5_CTRL, cfg); 98 if (ret) 99 return ret; 100 101 return pmic_bus_setbits(AXP809_OUTPUT_CTRL1, 102 AXP809_OUTPUT_CTRL1_DCDC4_EN); 103 } 104 105 int axp_set_dcdc5(unsigned int mvolt) 106 { 107 int ret; 108 u8 cfg = axp809_mvolt_to_cfg(mvolt, 1000, 2550, 50); 109 110 if (mvolt == 0) 111 return pmic_bus_clrbits(AXP809_OUTPUT_CTRL1, 112 AXP809_OUTPUT_CTRL1_DCDC5_EN); 113 114 ret = pmic_bus_write(AXP809_DCDC5_CTRL, cfg); 115 if (ret) 116 return ret; 117 118 return pmic_bus_setbits(AXP809_OUTPUT_CTRL1, 119 AXP809_OUTPUT_CTRL1_DCDC5_EN); 120 } 121 122 int axp_set_aldo(int aldo_num, unsigned int mvolt) 123 { 124 int ret; 125 u8 cfg; 126 127 if (aldo_num < 1 || aldo_num > 3) 128 return -EINVAL; 129 130 if (mvolt == 0 && aldo_num == 3) 131 return pmic_bus_clrbits(AXP809_OUTPUT_CTRL2, 132 AXP809_OUTPUT_CTRL2_ALDO3_EN); 133 if (mvolt == 0) 134 return pmic_bus_clrbits(AXP809_OUTPUT_CTRL1, 135 AXP809_OUTPUT_CTRL1_ALDO1_EN << (aldo_num - 1)); 136 137 cfg = axp809_mvolt_to_cfg(mvolt, 700, 3300, 100); 138 ret = pmic_bus_write(AXP809_ALDO1_CTRL + (aldo_num - 1), cfg); 139 if (ret) 140 return ret; 141 142 if (aldo_num == 3) 143 return pmic_bus_setbits(AXP809_OUTPUT_CTRL2, 144 AXP809_OUTPUT_CTRL2_ALDO3_EN); 145 return pmic_bus_setbits(AXP809_OUTPUT_CTRL1, 146 AXP809_OUTPUT_CTRL1_ALDO1_EN << (aldo_num - 1)); 147 } 148 149 /* TODO: re-work other AXP drivers to consolidate ALDO functions. */ 150 int axp_set_aldo1(unsigned int mvolt) 151 { 152 return axp_set_aldo(1, mvolt); 153 } 154 155 int axp_set_aldo2(unsigned int mvolt) 156 { 157 return axp_set_aldo(2, mvolt); 158 } 159 160 int axp_set_aldo3(unsigned int mvolt) 161 { 162 return axp_set_aldo(3, mvolt); 163 } 164 165 int axp_set_dldo(int dldo_num, unsigned int mvolt) 166 { 167 u8 cfg = axp809_mvolt_to_cfg(mvolt, 700, 3300, 100); 168 int ret; 169 170 if (dldo_num < 1 || dldo_num > 2) 171 return -EINVAL; 172 173 if (mvolt == 0) 174 return pmic_bus_clrbits(AXP809_OUTPUT_CTRL2, 175 AXP809_OUTPUT_CTRL2_DLDO1_EN << (dldo_num - 1)); 176 177 if (dldo_num == 1 && mvolt > 3300) 178 cfg += 1 + axp809_mvolt_to_cfg(mvolt, 3400, 4200, 200); 179 ret = pmic_bus_write(AXP809_DLDO1_CTRL + (dldo_num - 1), cfg); 180 if (ret) 181 return ret; 182 183 return pmic_bus_setbits(AXP809_OUTPUT_CTRL2, 184 AXP809_OUTPUT_CTRL2_DLDO1_EN << (dldo_num - 1)); 185 } 186 187 int axp_set_eldo(int eldo_num, unsigned int mvolt) 188 { 189 int ret; 190 u8 cfg = axp809_mvolt_to_cfg(mvolt, 700, 3300, 100); 191 192 if (eldo_num < 1 || eldo_num > 3) 193 return -EINVAL; 194 195 if (mvolt == 0) 196 return pmic_bus_clrbits(AXP809_OUTPUT_CTRL2, 197 AXP809_OUTPUT_CTRL2_ELDO1_EN << (eldo_num - 1)); 198 199 ret = pmic_bus_write(AXP809_ELDO1_CTRL + (eldo_num - 1), cfg); 200 if (ret) 201 return ret; 202 203 return pmic_bus_setbits(AXP809_OUTPUT_CTRL2, 204 AXP809_OUTPUT_CTRL2_ELDO1_EN << (eldo_num - 1)); 205 } 206 207 int axp_set_sw(bool on) 208 { 209 if (on) 210 return pmic_bus_setbits(AXP809_OUTPUT_CTRL2, 211 AXP809_OUTPUT_CTRL2_SWOUT_EN); 212 213 return pmic_bus_clrbits(AXP809_OUTPUT_CTRL2, 214 AXP809_OUTPUT_CTRL2_SWOUT_EN); 215 } 216 217 int axp_init(void) 218 { 219 return pmic_bus_init(); 220 } 221 222 int do_poweroff(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) 223 { 224 pmic_bus_write(AXP809_SHUTDOWN, AXP809_SHUTDOWN_POWEROFF); 225 226 /* infinite loop during shutdown */ 227 while (1) {} 228 229 /* not reached */ 230 return 0; 231 } 232