1c942fddfSThomas Gleixner // SPDX-License-Identifier: GPL-2.0-or-later 29d2ecfb7SGuenter Roeck /* 39d2ecfb7SGuenter Roeck * Hardware monitoring driver for Analog Devices ADM1275 Hot-Swap Controller 49d2ecfb7SGuenter Roeck * and Digital Power Monitor 59d2ecfb7SGuenter Roeck * 69d2ecfb7SGuenter Roeck * Copyright (c) 2011 Ericsson AB. 74ff0ce22SGuenter Roeck * Copyright (c) 2018 Guenter Roeck 89d2ecfb7SGuenter Roeck */ 99d2ecfb7SGuenter Roeck 109d2ecfb7SGuenter Roeck #include <linux/kernel.h> 119d2ecfb7SGuenter Roeck #include <linux/module.h> 129d2ecfb7SGuenter Roeck #include <linux/init.h> 139d2ecfb7SGuenter Roeck #include <linux/err.h> 149d2ecfb7SGuenter Roeck #include <linux/slab.h> 159d2ecfb7SGuenter Roeck #include <linux/i2c.h> 1699b41608SGuenter Roeck #include <linux/bitops.h> 17c83529c1SAdamski, Krzysztof (Nokia - PL/Wroclaw) #include <linux/bitfield.h> 18c83529c1SAdamski, Krzysztof (Nokia - PL/Wroclaw) #include <linux/log2.h> 199d2ecfb7SGuenter Roeck #include "pmbus.h" 209d2ecfb7SGuenter Roeck 214ff0ce22SGuenter Roeck enum chips { adm1075, adm1272, adm1275, adm1276, adm1278, adm1293, adm1294 }; 2268a40382SGuenter Roeck 2368a40382SGuenter Roeck #define ADM1275_MFR_STATUS_IOUT_WARN2 BIT(0) 2468a40382SGuenter Roeck #define ADM1293_MFR_STATUS_VAUX_UV_WARN BIT(5) 2568a40382SGuenter Roeck #define ADM1293_MFR_STATUS_VAUX_OV_WARN BIT(6) 265cf231a3SGuenter Roeck 27c576e30cSGuenter Roeck #define ADM1275_PEAK_IOUT 0xd0 28c576e30cSGuenter Roeck #define ADM1275_PEAK_VIN 0xd1 29c576e30cSGuenter Roeck #define ADM1275_PEAK_VOUT 0xd2 309d2ecfb7SGuenter Roeck #define ADM1275_PMON_CONFIG 0xd4 319d2ecfb7SGuenter Roeck 3299b41608SGuenter Roeck #define ADM1275_VIN_VOUT_SELECT BIT(6) 3399b41608SGuenter Roeck #define ADM1275_VRANGE BIT(5) 3499b41608SGuenter Roeck #define ADM1075_IRANGE_50 BIT(4) 3599b41608SGuenter Roeck #define ADM1075_IRANGE_25 BIT(3) 3699b41608SGuenter Roeck #define ADM1075_IRANGE_MASK (BIT(3) | BIT(4)) 379d2ecfb7SGuenter Roeck 384ff0ce22SGuenter Roeck #define ADM1272_IRANGE BIT(0) 394ff0ce22SGuenter Roeck 40b153a0bbSGuenter Roeck #define ADM1278_TSFILT BIT(15) 41709066acSGuenter Roeck #define ADM1278_TEMP1_EN BIT(3) 42709066acSGuenter Roeck #define ADM1278_VIN_EN BIT(2) 43709066acSGuenter Roeck #define ADM1278_VOUT_EN BIT(1) 44709066acSGuenter Roeck 45b153a0bbSGuenter Roeck #define ADM1278_PMON_DEFCONFIG (ADM1278_VOUT_EN | ADM1278_TEMP1_EN | ADM1278_TSFILT) 46b153a0bbSGuenter Roeck 4768a40382SGuenter Roeck #define ADM1293_IRANGE_25 0 4868a40382SGuenter Roeck #define ADM1293_IRANGE_50 BIT(6) 4968a40382SGuenter Roeck #define ADM1293_IRANGE_100 BIT(7) 5068a40382SGuenter Roeck #define ADM1293_IRANGE_200 (BIT(6) | BIT(7)) 5168a40382SGuenter Roeck #define ADM1293_IRANGE_MASK (BIT(6) | BIT(7)) 5268a40382SGuenter Roeck 5368a40382SGuenter Roeck #define ADM1293_VIN_SEL_012 BIT(2) 5468a40382SGuenter Roeck #define ADM1293_VIN_SEL_074 BIT(3) 5568a40382SGuenter Roeck #define ADM1293_VIN_SEL_210 (BIT(2) | BIT(3)) 5668a40382SGuenter Roeck #define ADM1293_VIN_SEL_MASK (BIT(2) | BIT(3)) 5768a40382SGuenter Roeck 5868a40382SGuenter Roeck #define ADM1293_VAUX_EN BIT(1) 5968a40382SGuenter Roeck 60709066acSGuenter Roeck #define ADM1278_PEAK_TEMP 0xd7 61c5e67636SGuenter Roeck #define ADM1275_IOUT_WARN2_LIMIT 0xd7 62c5e67636SGuenter Roeck #define ADM1275_DEVICE_CONFIG 0xd8 63c5e67636SGuenter Roeck 6499b41608SGuenter Roeck #define ADM1275_IOUT_WARN2_SELECT BIT(4) 65c5e67636SGuenter Roeck 665cf231a3SGuenter Roeck #define ADM1276_PEAK_PIN 0xda 6792711269SGuenter Roeck #define ADM1075_READ_VAUX 0xdd 6892711269SGuenter Roeck #define ADM1075_VAUX_OV_WARN_LIMIT 0xde 6992711269SGuenter Roeck #define ADM1075_VAUX_UV_WARN_LIMIT 0xdf 7068a40382SGuenter Roeck #define ADM1293_IOUT_MIN 0xe3 7168a40382SGuenter Roeck #define ADM1293_PIN_MIN 0xe4 7292711269SGuenter Roeck #define ADM1075_VAUX_STATUS 0xf6 7392711269SGuenter Roeck 7499b41608SGuenter Roeck #define ADM1075_VAUX_OV_WARN BIT(7) 7599b41608SGuenter Roeck #define ADM1075_VAUX_UV_WARN BIT(6) 7692711269SGuenter Roeck 777d45deb3SGuenter Roeck #define ADM1275_VI_AVG_SHIFT 0 787d45deb3SGuenter Roeck #define ADM1275_VI_AVG_MASK GENMASK(ADM1275_VI_AVG_SHIFT + 2, \ 797d45deb3SGuenter Roeck ADM1275_VI_AVG_SHIFT) 80c83529c1SAdamski, Krzysztof (Nokia - PL/Wroclaw) #define ADM1275_SAMPLES_AVG_MAX 128 81c83529c1SAdamski, Krzysztof (Nokia - PL/Wroclaw) 827d45deb3SGuenter Roeck #define ADM1278_PWR_AVG_SHIFT 11 837d45deb3SGuenter Roeck #define ADM1278_PWR_AVG_MASK GENMASK(ADM1278_PWR_AVG_SHIFT + 2, \ 847d45deb3SGuenter Roeck ADM1278_PWR_AVG_SHIFT) 857d45deb3SGuenter Roeck #define ADM1278_VI_AVG_SHIFT 8 867d45deb3SGuenter Roeck #define ADM1278_VI_AVG_MASK GENMASK(ADM1278_VI_AVG_SHIFT + 2, \ 877d45deb3SGuenter Roeck ADM1278_VI_AVG_SHIFT) 887d45deb3SGuenter Roeck 89c5e67636SGuenter Roeck struct adm1275_data { 905cf231a3SGuenter Roeck int id; 91c5e67636SGuenter Roeck bool have_oc_fault; 929048539bSGuenter Roeck bool have_uc_fault; 939048539bSGuenter Roeck bool have_vout; 949048539bSGuenter Roeck bool have_vaux_status; 9568a40382SGuenter Roeck bool have_mfr_vaux_status; 9668a40382SGuenter Roeck bool have_iout_min; 9768a40382SGuenter Roeck bool have_pin_min; 989048539bSGuenter Roeck bool have_pin_max; 99709066acSGuenter Roeck bool have_temp_max; 1007d45deb3SGuenter Roeck bool have_power_sampling; 101c5e67636SGuenter Roeck struct pmbus_driver_info info; 102c5e67636SGuenter Roeck }; 103c5e67636SGuenter Roeck 104c5e67636SGuenter Roeck #define to_adm1275_data(x) container_of(x, struct adm1275_data, info) 105c5e67636SGuenter Roeck 106904b296fSGuenter Roeck struct coefficients { 107904b296fSGuenter Roeck s16 m; 108904b296fSGuenter Roeck s16 b; 109904b296fSGuenter Roeck s16 R; 110904b296fSGuenter Roeck }; 111904b296fSGuenter Roeck 112904b296fSGuenter Roeck static const struct coefficients adm1075_coefficients[] = { 113904b296fSGuenter Roeck [0] = { 27169, 0, -1 }, /* voltage */ 114904b296fSGuenter Roeck [1] = { 806, 20475, -1 }, /* current, irange25 */ 115904b296fSGuenter Roeck [2] = { 404, 20475, -1 }, /* current, irange50 */ 1166faecba0SShikhar Dogra [3] = { 8549, 0, -1 }, /* power, irange25 */ 1176faecba0SShikhar Dogra [4] = { 4279, 0, -1 }, /* power, irange50 */ 118904b296fSGuenter Roeck }; 119904b296fSGuenter Roeck 1204ff0ce22SGuenter Roeck static const struct coefficients adm1272_coefficients[] = { 1214ff0ce22SGuenter Roeck [0] = { 6770, 0, -2 }, /* voltage, vrange 60V */ 1224ff0ce22SGuenter Roeck [1] = { 4062, 0, -2 }, /* voltage, vrange 100V */ 1234ff0ce22SGuenter Roeck [2] = { 1326, 20480, -1 }, /* current, vsense range 15mV */ 1244ff0ce22SGuenter Roeck [3] = { 663, 20480, -1 }, /* current, vsense range 30mV */ 1254ff0ce22SGuenter Roeck [4] = { 3512, 0, -2 }, /* power, vrange 60V, irange 15mV */ 1264ff0ce22SGuenter Roeck [5] = { 21071, 0, -3 }, /* power, vrange 100V, irange 15mV */ 1274ff0ce22SGuenter Roeck [6] = { 17561, 0, -3 }, /* power, vrange 60V, irange 30mV */ 1284ff0ce22SGuenter Roeck [7] = { 10535, 0, -3 }, /* power, vrange 100V, irange 30mV */ 1294ff0ce22SGuenter Roeck [8] = { 42, 31871, -1 }, /* temperature */ 1304ff0ce22SGuenter Roeck 1314ff0ce22SGuenter Roeck }; 1324ff0ce22SGuenter Roeck 133904b296fSGuenter Roeck static const struct coefficients adm1275_coefficients[] = { 134904b296fSGuenter Roeck [0] = { 19199, 0, -2 }, /* voltage, vrange set */ 135904b296fSGuenter Roeck [1] = { 6720, 0, -1 }, /* voltage, vrange not set */ 136904b296fSGuenter Roeck [2] = { 807, 20475, -1 }, /* current */ 137904b296fSGuenter Roeck }; 138904b296fSGuenter Roeck 139904b296fSGuenter Roeck static const struct coefficients adm1276_coefficients[] = { 140904b296fSGuenter Roeck [0] = { 19199, 0, -2 }, /* voltage, vrange set */ 141904b296fSGuenter Roeck [1] = { 6720, 0, -1 }, /* voltage, vrange not set */ 142904b296fSGuenter Roeck [2] = { 807, 20475, -1 }, /* current */ 143904b296fSGuenter Roeck [3] = { 6043, 0, -2 }, /* power, vrange set */ 144904b296fSGuenter Roeck [4] = { 2115, 0, -1 }, /* power, vrange not set */ 145904b296fSGuenter Roeck }; 146904b296fSGuenter Roeck 147709066acSGuenter Roeck static const struct coefficients adm1278_coefficients[] = { 148709066acSGuenter Roeck [0] = { 19599, 0, -2 }, /* voltage */ 149709066acSGuenter Roeck [1] = { 800, 20475, -1 }, /* current */ 150709066acSGuenter Roeck [2] = { 6123, 0, -2 }, /* power */ 151709066acSGuenter Roeck [3] = { 42, 31880, -1 }, /* temperature */ 152709066acSGuenter Roeck }; 153709066acSGuenter Roeck 15468a40382SGuenter Roeck static const struct coefficients adm1293_coefficients[] = { 15568a40382SGuenter Roeck [0] = { 3333, -1, 0 }, /* voltage, vrange 1.2V */ 15668a40382SGuenter Roeck [1] = { 5552, -5, -1 }, /* voltage, vrange 7.4V */ 15768a40382SGuenter Roeck [2] = { 19604, -50, -2 }, /* voltage, vrange 21V */ 15868a40382SGuenter Roeck [3] = { 8000, -100, -2 }, /* current, irange25 */ 15968a40382SGuenter Roeck [4] = { 4000, -100, -2 }, /* current, irange50 */ 16068a40382SGuenter Roeck [5] = { 20000, -1000, -3 }, /* current, irange100 */ 16168a40382SGuenter Roeck [6] = { 10000, -1000, -3 }, /* current, irange200 */ 16268a40382SGuenter Roeck [7] = { 10417, 0, -1 }, /* power, 1.2V, irange25 */ 16368a40382SGuenter Roeck [8] = { 5208, 0, -1 }, /* power, 1.2V, irange50 */ 16468a40382SGuenter Roeck [9] = { 26042, 0, -2 }, /* power, 1.2V, irange100 */ 16568a40382SGuenter Roeck [10] = { 13021, 0, -2 }, /* power, 1.2V, irange200 */ 16668a40382SGuenter Roeck [11] = { 17351, 0, -2 }, /* power, 7.4V, irange25 */ 16768a40382SGuenter Roeck [12] = { 8676, 0, -2 }, /* power, 7.4V, irange50 */ 16868a40382SGuenter Roeck [13] = { 4338, 0, -2 }, /* power, 7.4V, irange100 */ 16968a40382SGuenter Roeck [14] = { 21689, 0, -3 }, /* power, 7.4V, irange200 */ 17068a40382SGuenter Roeck [15] = { 6126, 0, -2 }, /* power, 21V, irange25 */ 17168a40382SGuenter Roeck [16] = { 30631, 0, -3 }, /* power, 21V, irange50 */ 17268a40382SGuenter Roeck [17] = { 15316, 0, -3 }, /* power, 21V, irange100 */ 17368a40382SGuenter Roeck [18] = { 7658, 0, -3 }, /* power, 21V, irange200 */ 17468a40382SGuenter Roeck }; 17568a40382SGuenter Roeck 176*98ac8af4SGuenter Roeck static int adm1275_read_samples(const struct adm1275_data *data, 1777d45deb3SGuenter Roeck struct i2c_client *client, bool is_power) 178c83529c1SAdamski, Krzysztof (Nokia - PL/Wroclaw) { 1797d45deb3SGuenter Roeck int shift, ret; 1807d45deb3SGuenter Roeck u16 mask; 181c83529c1SAdamski, Krzysztof (Nokia - PL/Wroclaw) 1827d45deb3SGuenter Roeck /* 1837d45deb3SGuenter Roeck * The PMON configuration register is a 16-bit register only on chips 1847d45deb3SGuenter Roeck * supporting power average sampling. On other chips it is an 8-bit 1857d45deb3SGuenter Roeck * register. 1867d45deb3SGuenter Roeck */ 1877d45deb3SGuenter Roeck if (data->have_power_sampling) { 188c83529c1SAdamski, Krzysztof (Nokia - PL/Wroclaw) ret = i2c_smbus_read_word_data(client, ADM1275_PMON_CONFIG); 1897d45deb3SGuenter Roeck mask = is_power ? ADM1278_PWR_AVG_MASK : ADM1278_VI_AVG_MASK; 1907d45deb3SGuenter Roeck shift = is_power ? ADM1278_PWR_AVG_SHIFT : ADM1278_VI_AVG_SHIFT; 1917d45deb3SGuenter Roeck } else { 1927d45deb3SGuenter Roeck ret = i2c_smbus_read_byte_data(client, ADM1275_PMON_CONFIG); 1937d45deb3SGuenter Roeck mask = ADM1275_VI_AVG_MASK; 1947d45deb3SGuenter Roeck shift = ADM1275_VI_AVG_SHIFT; 1957d45deb3SGuenter Roeck } 196c83529c1SAdamski, Krzysztof (Nokia - PL/Wroclaw) if (ret < 0) 197c83529c1SAdamski, Krzysztof (Nokia - PL/Wroclaw) return ret; 198c83529c1SAdamski, Krzysztof (Nokia - PL/Wroclaw) 1997d45deb3SGuenter Roeck return (ret & mask) >> shift; 200c83529c1SAdamski, Krzysztof (Nokia - PL/Wroclaw) } 201c83529c1SAdamski, Krzysztof (Nokia - PL/Wroclaw) 2027d45deb3SGuenter Roeck static int adm1275_write_pmon_config(const struct adm1275_data *data, 203*98ac8af4SGuenter Roeck struct i2c_client *client, u16 word) 204*98ac8af4SGuenter Roeck { 205*98ac8af4SGuenter Roeck int ret; 206*98ac8af4SGuenter Roeck 207*98ac8af4SGuenter Roeck if (data->have_power_sampling) 208*98ac8af4SGuenter Roeck ret = i2c_smbus_write_word_data(client, ADM1275_PMON_CONFIG, 209*98ac8af4SGuenter Roeck word); 210*98ac8af4SGuenter Roeck else 211*98ac8af4SGuenter Roeck ret = i2c_smbus_write_byte_data(client, ADM1275_PMON_CONFIG, 212*98ac8af4SGuenter Roeck word); 213*98ac8af4SGuenter Roeck 214*98ac8af4SGuenter Roeck return ret; 215*98ac8af4SGuenter Roeck } 216*98ac8af4SGuenter Roeck 217*98ac8af4SGuenter Roeck static int adm1275_write_samples(const struct adm1275_data *data, 2187d45deb3SGuenter Roeck struct i2c_client *client, 2197d45deb3SGuenter Roeck bool is_power, u16 word) 220c83529c1SAdamski, Krzysztof (Nokia - PL/Wroclaw) { 2217d45deb3SGuenter Roeck int shift, ret; 2227d45deb3SGuenter Roeck u16 mask; 223c83529c1SAdamski, Krzysztof (Nokia - PL/Wroclaw) 2247d45deb3SGuenter Roeck if (data->have_power_sampling) { 225c83529c1SAdamski, Krzysztof (Nokia - PL/Wroclaw) ret = i2c_smbus_read_word_data(client, ADM1275_PMON_CONFIG); 2267d45deb3SGuenter Roeck mask = is_power ? ADM1278_PWR_AVG_MASK : ADM1278_VI_AVG_MASK; 2277d45deb3SGuenter Roeck shift = is_power ? ADM1278_PWR_AVG_SHIFT : ADM1278_VI_AVG_SHIFT; 2287d45deb3SGuenter Roeck } else { 2297d45deb3SGuenter Roeck ret = i2c_smbus_read_byte_data(client, ADM1275_PMON_CONFIG); 2307d45deb3SGuenter Roeck mask = ADM1275_VI_AVG_MASK; 2317d45deb3SGuenter Roeck shift = ADM1275_VI_AVG_SHIFT; 2327d45deb3SGuenter Roeck } 233c83529c1SAdamski, Krzysztof (Nokia - PL/Wroclaw) if (ret < 0) 234c83529c1SAdamski, Krzysztof (Nokia - PL/Wroclaw) return ret; 235c83529c1SAdamski, Krzysztof (Nokia - PL/Wroclaw) 2367d45deb3SGuenter Roeck word = (ret & ~mask) | ((word << shift) & mask); 237c83529c1SAdamski, Krzysztof (Nokia - PL/Wroclaw) 238*98ac8af4SGuenter Roeck return adm1275_write_pmon_config(data, client, word); 239c83529c1SAdamski, Krzysztof (Nokia - PL/Wroclaw) } 240c83529c1SAdamski, Krzysztof (Nokia - PL/Wroclaw) 24143f33b6eSGuenter Roeck static int adm1275_read_word_data(struct i2c_client *client, int page, 24243f33b6eSGuenter Roeck int phase, int reg) 243c576e30cSGuenter Roeck { 244c5e67636SGuenter Roeck const struct pmbus_driver_info *info = pmbus_get_driver_info(client); 245c5e67636SGuenter Roeck const struct adm1275_data *data = to_adm1275_data(info); 2465cf231a3SGuenter Roeck int ret = 0; 247c576e30cSGuenter Roeck 248ecb29abdSGuenter Roeck if (page > 0) 249c5e67636SGuenter Roeck return -ENXIO; 250c576e30cSGuenter Roeck 251c576e30cSGuenter Roeck switch (reg) { 252c5e67636SGuenter Roeck case PMBUS_IOUT_UC_FAULT_LIMIT: 2539048539bSGuenter Roeck if (!data->have_uc_fault) 2549048539bSGuenter Roeck return -ENXIO; 25543f33b6eSGuenter Roeck ret = pmbus_read_word_data(client, 0, 0xff, 25643f33b6eSGuenter Roeck ADM1275_IOUT_WARN2_LIMIT); 257c5e67636SGuenter Roeck break; 258c5e67636SGuenter Roeck case PMBUS_IOUT_OC_FAULT_LIMIT: 2599048539bSGuenter Roeck if (!data->have_oc_fault) 2609048539bSGuenter Roeck return -ENXIO; 26143f33b6eSGuenter Roeck ret = pmbus_read_word_data(client, 0, 0xff, 26243f33b6eSGuenter Roeck ADM1275_IOUT_WARN2_LIMIT); 263c5e67636SGuenter Roeck break; 26492711269SGuenter Roeck case PMBUS_VOUT_OV_WARN_LIMIT: 2659048539bSGuenter Roeck if (data->have_vout) 2669048539bSGuenter Roeck return -ENODATA; 26743f33b6eSGuenter Roeck ret = pmbus_read_word_data(client, 0, 0xff, 26892711269SGuenter Roeck ADM1075_VAUX_OV_WARN_LIMIT); 26992711269SGuenter Roeck break; 27092711269SGuenter Roeck case PMBUS_VOUT_UV_WARN_LIMIT: 2719048539bSGuenter Roeck if (data->have_vout) 2729048539bSGuenter Roeck return -ENODATA; 27343f33b6eSGuenter Roeck ret = pmbus_read_word_data(client, 0, 0xff, 27492711269SGuenter Roeck ADM1075_VAUX_UV_WARN_LIMIT); 27592711269SGuenter Roeck break; 27692711269SGuenter Roeck case PMBUS_READ_VOUT: 2779048539bSGuenter Roeck if (data->have_vout) 2789048539bSGuenter Roeck return -ENODATA; 27943f33b6eSGuenter Roeck ret = pmbus_read_word_data(client, 0, 0xff, 28043f33b6eSGuenter Roeck ADM1075_READ_VAUX); 28192711269SGuenter Roeck break; 28268a40382SGuenter Roeck case PMBUS_VIRT_READ_IOUT_MIN: 28368a40382SGuenter Roeck if (!data->have_iout_min) 28468a40382SGuenter Roeck return -ENXIO; 28543f33b6eSGuenter Roeck ret = pmbus_read_word_data(client, 0, 0xff, 28643f33b6eSGuenter Roeck ADM1293_IOUT_MIN); 28768a40382SGuenter Roeck break; 288c576e30cSGuenter Roeck case PMBUS_VIRT_READ_IOUT_MAX: 28943f33b6eSGuenter Roeck ret = pmbus_read_word_data(client, 0, 0xff, 29043f33b6eSGuenter Roeck ADM1275_PEAK_IOUT); 291c576e30cSGuenter Roeck break; 292c576e30cSGuenter Roeck case PMBUS_VIRT_READ_VOUT_MAX: 29343f33b6eSGuenter Roeck ret = pmbus_read_word_data(client, 0, 0xff, 29443f33b6eSGuenter Roeck ADM1275_PEAK_VOUT); 295c576e30cSGuenter Roeck break; 296c576e30cSGuenter Roeck case PMBUS_VIRT_READ_VIN_MAX: 29743f33b6eSGuenter Roeck ret = pmbus_read_word_data(client, 0, 0xff, 29843f33b6eSGuenter Roeck ADM1275_PEAK_VIN); 299c576e30cSGuenter Roeck break; 30068a40382SGuenter Roeck case PMBUS_VIRT_READ_PIN_MIN: 30168a40382SGuenter Roeck if (!data->have_pin_min) 30268a40382SGuenter Roeck return -ENXIO; 30343f33b6eSGuenter Roeck ret = pmbus_read_word_data(client, 0, 0xff, 30443f33b6eSGuenter Roeck ADM1293_PIN_MIN); 30568a40382SGuenter Roeck break; 3065cf231a3SGuenter Roeck case PMBUS_VIRT_READ_PIN_MAX: 3079048539bSGuenter Roeck if (!data->have_pin_max) 3089048539bSGuenter Roeck return -ENXIO; 30943f33b6eSGuenter Roeck ret = pmbus_read_word_data(client, 0, 0xff, 31043f33b6eSGuenter Roeck ADM1276_PEAK_PIN); 3115cf231a3SGuenter Roeck break; 312709066acSGuenter Roeck case PMBUS_VIRT_READ_TEMP_MAX: 313709066acSGuenter Roeck if (!data->have_temp_max) 314709066acSGuenter Roeck return -ENXIO; 31543f33b6eSGuenter Roeck ret = pmbus_read_word_data(client, 0, 0xff, 31643f33b6eSGuenter Roeck ADM1278_PEAK_TEMP); 317709066acSGuenter Roeck break; 318c576e30cSGuenter Roeck case PMBUS_VIRT_RESET_IOUT_HISTORY: 319c576e30cSGuenter Roeck case PMBUS_VIRT_RESET_VOUT_HISTORY: 320c576e30cSGuenter Roeck case PMBUS_VIRT_RESET_VIN_HISTORY: 3215cf231a3SGuenter Roeck break; 3225cf231a3SGuenter Roeck case PMBUS_VIRT_RESET_PIN_HISTORY: 3239048539bSGuenter Roeck if (!data->have_pin_max) 3249048539bSGuenter Roeck return -ENXIO; 325c576e30cSGuenter Roeck break; 326709066acSGuenter Roeck case PMBUS_VIRT_RESET_TEMP_HISTORY: 327709066acSGuenter Roeck if (!data->have_temp_max) 328709066acSGuenter Roeck return -ENXIO; 329709066acSGuenter Roeck break; 330c83529c1SAdamski, Krzysztof (Nokia - PL/Wroclaw) case PMBUS_VIRT_POWER_SAMPLES: 3317d45deb3SGuenter Roeck if (!data->have_power_sampling) 3327d45deb3SGuenter Roeck return -ENXIO; 333*98ac8af4SGuenter Roeck ret = adm1275_read_samples(data, client, true); 334c83529c1SAdamski, Krzysztof (Nokia - PL/Wroclaw) if (ret < 0) 335c83529c1SAdamski, Krzysztof (Nokia - PL/Wroclaw) break; 336c83529c1SAdamski, Krzysztof (Nokia - PL/Wroclaw) ret = BIT(ret); 337c83529c1SAdamski, Krzysztof (Nokia - PL/Wroclaw) break; 338c83529c1SAdamski, Krzysztof (Nokia - PL/Wroclaw) case PMBUS_VIRT_IN_SAMPLES: 339c83529c1SAdamski, Krzysztof (Nokia - PL/Wroclaw) case PMBUS_VIRT_CURR_SAMPLES: 340*98ac8af4SGuenter Roeck ret = adm1275_read_samples(data, client, false); 341c83529c1SAdamski, Krzysztof (Nokia - PL/Wroclaw) if (ret < 0) 342c83529c1SAdamski, Krzysztof (Nokia - PL/Wroclaw) break; 343c83529c1SAdamski, Krzysztof (Nokia - PL/Wroclaw) ret = BIT(ret); 344c83529c1SAdamski, Krzysztof (Nokia - PL/Wroclaw) break; 345c576e30cSGuenter Roeck default: 346c576e30cSGuenter Roeck ret = -ENODATA; 347c576e30cSGuenter Roeck break; 348c576e30cSGuenter Roeck } 349c576e30cSGuenter Roeck return ret; 350c576e30cSGuenter Roeck } 351c576e30cSGuenter Roeck 352c576e30cSGuenter Roeck static int adm1275_write_word_data(struct i2c_client *client, int page, int reg, 353c576e30cSGuenter Roeck u16 word) 354c576e30cSGuenter Roeck { 35568a40382SGuenter Roeck const struct pmbus_driver_info *info = pmbus_get_driver_info(client); 35668a40382SGuenter Roeck const struct adm1275_data *data = to_adm1275_data(info); 357c576e30cSGuenter Roeck int ret; 358c576e30cSGuenter Roeck 359ecb29abdSGuenter Roeck if (page > 0) 360c5e67636SGuenter Roeck return -ENXIO; 361c576e30cSGuenter Roeck 362c576e30cSGuenter Roeck switch (reg) { 363c5e67636SGuenter Roeck case PMBUS_IOUT_UC_FAULT_LIMIT: 364c5e67636SGuenter Roeck case PMBUS_IOUT_OC_FAULT_LIMIT: 365c5e67636SGuenter Roeck ret = pmbus_write_word_data(client, 0, ADM1275_IOUT_WARN2_LIMIT, 366c5e67636SGuenter Roeck word); 367c5e67636SGuenter Roeck break; 368c576e30cSGuenter Roeck case PMBUS_VIRT_RESET_IOUT_HISTORY: 369c576e30cSGuenter Roeck ret = pmbus_write_word_data(client, 0, ADM1275_PEAK_IOUT, 0); 37068a40382SGuenter Roeck if (!ret && data->have_iout_min) 37168a40382SGuenter Roeck ret = pmbus_write_word_data(client, 0, 37268a40382SGuenter Roeck ADM1293_IOUT_MIN, 0); 373c576e30cSGuenter Roeck break; 374c576e30cSGuenter Roeck case PMBUS_VIRT_RESET_VOUT_HISTORY: 375c576e30cSGuenter Roeck ret = pmbus_write_word_data(client, 0, ADM1275_PEAK_VOUT, 0); 376c576e30cSGuenter Roeck break; 377c576e30cSGuenter Roeck case PMBUS_VIRT_RESET_VIN_HISTORY: 378c576e30cSGuenter Roeck ret = pmbus_write_word_data(client, 0, ADM1275_PEAK_VIN, 0); 379c576e30cSGuenter Roeck break; 3805cf231a3SGuenter Roeck case PMBUS_VIRT_RESET_PIN_HISTORY: 3815cf231a3SGuenter Roeck ret = pmbus_write_word_data(client, 0, ADM1276_PEAK_PIN, 0); 38268a40382SGuenter Roeck if (!ret && data->have_pin_min) 38368a40382SGuenter Roeck ret = pmbus_write_word_data(client, 0, 38468a40382SGuenter Roeck ADM1293_PIN_MIN, 0); 3855cf231a3SGuenter Roeck break; 386709066acSGuenter Roeck case PMBUS_VIRT_RESET_TEMP_HISTORY: 387709066acSGuenter Roeck ret = pmbus_write_word_data(client, 0, ADM1278_PEAK_TEMP, 0); 388709066acSGuenter Roeck break; 389c83529c1SAdamski, Krzysztof (Nokia - PL/Wroclaw) case PMBUS_VIRT_POWER_SAMPLES: 3907d45deb3SGuenter Roeck if (!data->have_power_sampling) 3917d45deb3SGuenter Roeck return -ENXIO; 392c83529c1SAdamski, Krzysztof (Nokia - PL/Wroclaw) word = clamp_val(word, 1, ADM1275_SAMPLES_AVG_MAX); 393*98ac8af4SGuenter Roeck ret = adm1275_write_samples(data, client, true, ilog2(word)); 394c83529c1SAdamski, Krzysztof (Nokia - PL/Wroclaw) break; 395c83529c1SAdamski, Krzysztof (Nokia - PL/Wroclaw) case PMBUS_VIRT_IN_SAMPLES: 396c83529c1SAdamski, Krzysztof (Nokia - PL/Wroclaw) case PMBUS_VIRT_CURR_SAMPLES: 397c83529c1SAdamski, Krzysztof (Nokia - PL/Wroclaw) word = clamp_val(word, 1, ADM1275_SAMPLES_AVG_MAX); 398*98ac8af4SGuenter Roeck ret = adm1275_write_samples(data, client, false, ilog2(word)); 399c83529c1SAdamski, Krzysztof (Nokia - PL/Wroclaw) break; 400c576e30cSGuenter Roeck default: 401c576e30cSGuenter Roeck ret = -ENODATA; 402c576e30cSGuenter Roeck break; 403c576e30cSGuenter Roeck } 404c576e30cSGuenter Roeck return ret; 405c576e30cSGuenter Roeck } 406c576e30cSGuenter Roeck 407c5e67636SGuenter Roeck static int adm1275_read_byte_data(struct i2c_client *client, int page, int reg) 408c5e67636SGuenter Roeck { 409c5e67636SGuenter Roeck const struct pmbus_driver_info *info = pmbus_get_driver_info(client); 410c5e67636SGuenter Roeck const struct adm1275_data *data = to_adm1275_data(info); 411c5e67636SGuenter Roeck int mfr_status, ret; 412c5e67636SGuenter Roeck 413da8e48abSGuenter Roeck if (page > 0) 414c5e67636SGuenter Roeck return -ENXIO; 415c5e67636SGuenter Roeck 416c5e67636SGuenter Roeck switch (reg) { 417c5e67636SGuenter Roeck case PMBUS_STATUS_IOUT: 418c5e67636SGuenter Roeck ret = pmbus_read_byte_data(client, page, PMBUS_STATUS_IOUT); 419c5e67636SGuenter Roeck if (ret < 0) 420c5e67636SGuenter Roeck break; 4219048539bSGuenter Roeck if (!data->have_oc_fault && !data->have_uc_fault) 4229048539bSGuenter Roeck break; 423c5e67636SGuenter Roeck mfr_status = pmbus_read_byte_data(client, page, 424c5e67636SGuenter Roeck PMBUS_STATUS_MFR_SPECIFIC); 4259048539bSGuenter Roeck if (mfr_status < 0) 4269048539bSGuenter Roeck return mfr_status; 427c5e67636SGuenter Roeck if (mfr_status & ADM1275_MFR_STATUS_IOUT_WARN2) { 428c5e67636SGuenter Roeck ret |= data->have_oc_fault ? 429c5e67636SGuenter Roeck PB_IOUT_OC_FAULT : PB_IOUT_UC_FAULT; 430c5e67636SGuenter Roeck } 431c5e67636SGuenter Roeck break; 43292711269SGuenter Roeck case PMBUS_STATUS_VOUT: 4339048539bSGuenter Roeck if (data->have_vout) 4349048539bSGuenter Roeck return -ENODATA; 43592711269SGuenter Roeck ret = 0; 4369048539bSGuenter Roeck if (data->have_vaux_status) { 43792711269SGuenter Roeck mfr_status = pmbus_read_byte_data(client, 0, 43892711269SGuenter Roeck ADM1075_VAUX_STATUS); 4399048539bSGuenter Roeck if (mfr_status < 0) 4409048539bSGuenter Roeck return mfr_status; 44192711269SGuenter Roeck if (mfr_status & ADM1075_VAUX_OV_WARN) 44292711269SGuenter Roeck ret |= PB_VOLTAGE_OV_WARNING; 44392711269SGuenter Roeck if (mfr_status & ADM1075_VAUX_UV_WARN) 44492711269SGuenter Roeck ret |= PB_VOLTAGE_UV_WARNING; 44568a40382SGuenter Roeck } else if (data->have_mfr_vaux_status) { 44668a40382SGuenter Roeck mfr_status = pmbus_read_byte_data(client, page, 44768a40382SGuenter Roeck PMBUS_STATUS_MFR_SPECIFIC); 44868a40382SGuenter Roeck if (mfr_status < 0) 44968a40382SGuenter Roeck return mfr_status; 45068a40382SGuenter Roeck if (mfr_status & ADM1293_MFR_STATUS_VAUX_OV_WARN) 45168a40382SGuenter Roeck ret |= PB_VOLTAGE_OV_WARNING; 45268a40382SGuenter Roeck if (mfr_status & ADM1293_MFR_STATUS_VAUX_UV_WARN) 45368a40382SGuenter Roeck ret |= PB_VOLTAGE_UV_WARNING; 4549048539bSGuenter Roeck } 45592711269SGuenter Roeck break; 456c5e67636SGuenter Roeck default: 457c5e67636SGuenter Roeck ret = -ENODATA; 458c5e67636SGuenter Roeck break; 459c5e67636SGuenter Roeck } 460c5e67636SGuenter Roeck return ret; 461c5e67636SGuenter Roeck } 462c5e67636SGuenter Roeck 46387102808SGuenter Roeck static const struct i2c_device_id adm1275_id[] = { 46492711269SGuenter Roeck { "adm1075", adm1075 }, 4654ff0ce22SGuenter Roeck { "adm1272", adm1272 }, 46687102808SGuenter Roeck { "adm1275", adm1275 }, 46787102808SGuenter Roeck { "adm1276", adm1276 }, 468709066acSGuenter Roeck { "adm1278", adm1278 }, 46968a40382SGuenter Roeck { "adm1293", adm1293 }, 47068a40382SGuenter Roeck { "adm1294", adm1294 }, 47187102808SGuenter Roeck { } 47287102808SGuenter Roeck }; 47387102808SGuenter Roeck MODULE_DEVICE_TABLE(i2c, adm1275_id); 47487102808SGuenter Roeck 475b153a0bbSGuenter Roeck /* Enable VOUT & TEMP1 if not enabled (disabled by default) */ 476*98ac8af4SGuenter Roeck static int adm1275_enable_vout_temp(struct adm1275_data *data, 477*98ac8af4SGuenter Roeck struct i2c_client *client, int config) 478b153a0bbSGuenter Roeck { 479b153a0bbSGuenter Roeck int ret; 480b153a0bbSGuenter Roeck 481b153a0bbSGuenter Roeck if ((config & ADM1278_PMON_DEFCONFIG) != ADM1278_PMON_DEFCONFIG) { 482b153a0bbSGuenter Roeck config |= ADM1278_PMON_DEFCONFIG; 483*98ac8af4SGuenter Roeck ret = adm1275_write_pmon_config(data, client, config); 484b153a0bbSGuenter Roeck if (ret < 0) { 485b153a0bbSGuenter Roeck dev_err(&client->dev, "Failed to enable VOUT/TEMP1 monitoring\n"); 486b153a0bbSGuenter Roeck return ret; 487b153a0bbSGuenter Roeck } 488b153a0bbSGuenter Roeck } 489b153a0bbSGuenter Roeck return 0; 490b153a0bbSGuenter Roeck } 491b153a0bbSGuenter Roeck 492dd431939SStephen Kitt static int adm1275_probe(struct i2c_client *client) 4939d2ecfb7SGuenter Roeck { 4946d1d41c0SChu Lin s32 (*config_read_fn)(const struct i2c_client *client, u8 reg); 49587102808SGuenter Roeck u8 block_buffer[I2C_SMBUS_BLOCK_MAX + 1]; 496c5e67636SGuenter Roeck int config, device_config; 4979d2ecfb7SGuenter Roeck int ret; 4989d2ecfb7SGuenter Roeck struct pmbus_driver_info *info; 499c5e67636SGuenter Roeck struct adm1275_data *data; 50087102808SGuenter Roeck const struct i2c_device_id *mid; 501904b296fSGuenter Roeck const struct coefficients *coefficients; 50268a40382SGuenter Roeck int vindex = -1, voindex = -1, cindex = -1, pindex = -1; 503709066acSGuenter Roeck int tindex = -1; 5046e5c06adSKun Yi u32 shunt; 505a3cd66d7SPotin Lai u32 avg; 5069d2ecfb7SGuenter Roeck 5079d2ecfb7SGuenter Roeck if (!i2c_check_functionality(client->adapter, 50887102808SGuenter Roeck I2C_FUNC_SMBUS_READ_BYTE_DATA 50987102808SGuenter Roeck | I2C_FUNC_SMBUS_BLOCK_DATA)) 5109d2ecfb7SGuenter Roeck return -ENODEV; 5119d2ecfb7SGuenter Roeck 51287102808SGuenter Roeck ret = i2c_smbus_read_block_data(client, PMBUS_MFR_ID, block_buffer); 51387102808SGuenter Roeck if (ret < 0) { 51487102808SGuenter Roeck dev_err(&client->dev, "Failed to read Manufacturer ID\n"); 51587102808SGuenter Roeck return ret; 51687102808SGuenter Roeck } 51787102808SGuenter Roeck if (ret != 3 || strncmp(block_buffer, "ADI", 3)) { 51887102808SGuenter Roeck dev_err(&client->dev, "Unsupported Manufacturer ID\n"); 51987102808SGuenter Roeck return -ENODEV; 52087102808SGuenter Roeck } 52187102808SGuenter Roeck 52287102808SGuenter Roeck ret = i2c_smbus_read_block_data(client, PMBUS_MFR_MODEL, block_buffer); 52387102808SGuenter Roeck if (ret < 0) { 52487102808SGuenter Roeck dev_err(&client->dev, "Failed to read Manufacturer Model\n"); 52587102808SGuenter Roeck return ret; 52687102808SGuenter Roeck } 52787102808SGuenter Roeck for (mid = adm1275_id; mid->name[0]; mid++) { 52887102808SGuenter Roeck if (!strncasecmp(mid->name, block_buffer, strlen(mid->name))) 52987102808SGuenter Roeck break; 53087102808SGuenter Roeck } 53187102808SGuenter Roeck if (!mid->name[0]) { 53287102808SGuenter Roeck dev_err(&client->dev, "Unsupported device\n"); 53387102808SGuenter Roeck return -ENODEV; 53487102808SGuenter Roeck } 53587102808SGuenter Roeck 536dd431939SStephen Kitt if (strcmp(client->name, mid->name) != 0) 53787102808SGuenter Roeck dev_notice(&client->dev, 53887102808SGuenter Roeck "Device mismatch: Configured %s, detected %s\n", 539dd431939SStephen Kitt client->name, mid->name); 54087102808SGuenter Roeck 5416d1d41c0SChu Lin if (mid->driver_data == adm1272 || mid->driver_data == adm1278 || 5426d1d41c0SChu Lin mid->driver_data == adm1293 || mid->driver_data == adm1294) 5436d1d41c0SChu Lin config_read_fn = i2c_smbus_read_word_data; 5446d1d41c0SChu Lin else 5456d1d41c0SChu Lin config_read_fn = i2c_smbus_read_byte_data; 5466d1d41c0SChu Lin config = config_read_fn(client, ADM1275_PMON_CONFIG); 54787102808SGuenter Roeck if (config < 0) 54887102808SGuenter Roeck return config; 54987102808SGuenter Roeck 5506d1d41c0SChu Lin device_config = config_read_fn(client, ADM1275_DEVICE_CONFIG); 55187102808SGuenter Roeck if (device_config < 0) 55287102808SGuenter Roeck return device_config; 55387102808SGuenter Roeck 5548b313ca7SGuenter Roeck data = devm_kzalloc(&client->dev, sizeof(struct adm1275_data), 5558b313ca7SGuenter Roeck GFP_KERNEL); 556c5e67636SGuenter Roeck if (!data) 5579d2ecfb7SGuenter Roeck return -ENOMEM; 5589d2ecfb7SGuenter Roeck 5596e5c06adSKun Yi if (of_property_read_u32(client->dev.of_node, 5606e5c06adSKun Yi "shunt-resistor-micro-ohms", &shunt)) 5616e5c06adSKun Yi shunt = 1000; /* 1 mOhm if not set via DT */ 5626e5c06adSKun Yi 5636e5c06adSKun Yi if (shunt == 0) 5646e5c06adSKun Yi return -EINVAL; 5656e5c06adSKun Yi 56687102808SGuenter Roeck data->id = mid->driver_data; 5679d2ecfb7SGuenter Roeck 568c5e67636SGuenter Roeck info = &data->info; 569c5e67636SGuenter Roeck 5709d2ecfb7SGuenter Roeck info->pages = 1; 5711061d851SGuenter Roeck info->format[PSC_VOLTAGE_IN] = direct; 5721061d851SGuenter Roeck info->format[PSC_VOLTAGE_OUT] = direct; 5731061d851SGuenter Roeck info->format[PSC_CURRENT_OUT] = direct; 574904b296fSGuenter Roeck info->format[PSC_POWER] = direct; 575709066acSGuenter Roeck info->format[PSC_TEMPERATURE] = direct; 576c83529c1SAdamski, Krzysztof (Nokia - PL/Wroclaw) info->func[0] = PMBUS_HAVE_IOUT | PMBUS_HAVE_STATUS_IOUT | 577c83529c1SAdamski, Krzysztof (Nokia - PL/Wroclaw) PMBUS_HAVE_SAMPLES; 5789d2ecfb7SGuenter Roeck 579c576e30cSGuenter Roeck info->read_word_data = adm1275_read_word_data; 580c5e67636SGuenter Roeck info->read_byte_data = adm1275_read_byte_data; 581c576e30cSGuenter Roeck info->write_word_data = adm1275_write_word_data; 582c576e30cSGuenter Roeck 58387102808SGuenter Roeck switch (data->id) { 58492711269SGuenter Roeck case adm1075: 5859048539bSGuenter Roeck if (device_config & ADM1275_IOUT_WARN2_SELECT) 5869048539bSGuenter Roeck data->have_oc_fault = true; 5879048539bSGuenter Roeck else 5889048539bSGuenter Roeck data->have_uc_fault = true; 5899048539bSGuenter Roeck data->have_pin_max = true; 5909048539bSGuenter Roeck data->have_vaux_status = true; 5919048539bSGuenter Roeck 592904b296fSGuenter Roeck coefficients = adm1075_coefficients; 593904b296fSGuenter Roeck vindex = 0; 59492711269SGuenter Roeck switch (config & ADM1075_IRANGE_MASK) { 59592711269SGuenter Roeck case ADM1075_IRANGE_25: 596904b296fSGuenter Roeck cindex = 1; 597904b296fSGuenter Roeck pindex = 3; 59892711269SGuenter Roeck break; 59992711269SGuenter Roeck case ADM1075_IRANGE_50: 600904b296fSGuenter Roeck cindex = 2; 601904b296fSGuenter Roeck pindex = 4; 60292711269SGuenter Roeck break; 60392711269SGuenter Roeck default: 60492711269SGuenter Roeck dev_err(&client->dev, "Invalid input current range"); 60592711269SGuenter Roeck break; 60692711269SGuenter Roeck } 607904b296fSGuenter Roeck 60892711269SGuenter Roeck info->func[0] |= PMBUS_HAVE_VIN | PMBUS_HAVE_PIN 60992711269SGuenter Roeck | PMBUS_HAVE_STATUS_INPUT; 61092711269SGuenter Roeck if (config & ADM1275_VIN_VOUT_SELECT) 61192711269SGuenter Roeck info->func[0] |= 61292711269SGuenter Roeck PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT; 61392711269SGuenter Roeck break; 6144ff0ce22SGuenter Roeck case adm1272: 6154ff0ce22SGuenter Roeck data->have_vout = true; 6164ff0ce22SGuenter Roeck data->have_pin_max = true; 6174ff0ce22SGuenter Roeck data->have_temp_max = true; 6187d45deb3SGuenter Roeck data->have_power_sampling = true; 6194ff0ce22SGuenter Roeck 6204ff0ce22SGuenter Roeck coefficients = adm1272_coefficients; 6214ff0ce22SGuenter Roeck vindex = (config & ADM1275_VRANGE) ? 1 : 0; 6224ff0ce22SGuenter Roeck cindex = (config & ADM1272_IRANGE) ? 3 : 2; 6234ff0ce22SGuenter Roeck /* pindex depends on the combination of the above */ 6244ff0ce22SGuenter Roeck switch (config & (ADM1275_VRANGE | ADM1272_IRANGE)) { 6254ff0ce22SGuenter Roeck case 0: 6264ff0ce22SGuenter Roeck default: 6274ff0ce22SGuenter Roeck pindex = 4; 6284ff0ce22SGuenter Roeck break; 6294ff0ce22SGuenter Roeck case ADM1275_VRANGE: 6304ff0ce22SGuenter Roeck pindex = 5; 6314ff0ce22SGuenter Roeck break; 6324ff0ce22SGuenter Roeck case ADM1272_IRANGE: 6334ff0ce22SGuenter Roeck pindex = 6; 6344ff0ce22SGuenter Roeck break; 6354ff0ce22SGuenter Roeck case ADM1275_VRANGE | ADM1272_IRANGE: 6364ff0ce22SGuenter Roeck pindex = 7; 6374ff0ce22SGuenter Roeck break; 6384ff0ce22SGuenter Roeck } 6394ff0ce22SGuenter Roeck tindex = 8; 6404ff0ce22SGuenter Roeck 6414ff0ce22SGuenter Roeck info->func[0] |= PMBUS_HAVE_PIN | PMBUS_HAVE_STATUS_INPUT | 6429da9c2dcSChu Lin PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT | 6439da9c2dcSChu Lin PMBUS_HAVE_TEMP | PMBUS_HAVE_STATUS_TEMP; 6444ff0ce22SGuenter Roeck 645*98ac8af4SGuenter Roeck ret = adm1275_enable_vout_temp(data, client, config); 646b153a0bbSGuenter Roeck if (ret) 647b153a0bbSGuenter Roeck return ret; 648b153a0bbSGuenter Roeck 6494ff0ce22SGuenter Roeck if (config & ADM1278_VIN_EN) 6504ff0ce22SGuenter Roeck info->func[0] |= PMBUS_HAVE_VIN; 6514ff0ce22SGuenter Roeck break; 6525cf231a3SGuenter Roeck case adm1275: 6539048539bSGuenter Roeck if (device_config & ADM1275_IOUT_WARN2_SELECT) 6549048539bSGuenter Roeck data->have_oc_fault = true; 6559048539bSGuenter Roeck else 6569048539bSGuenter Roeck data->have_uc_fault = true; 6579048539bSGuenter Roeck data->have_vout = true; 6589048539bSGuenter Roeck 659904b296fSGuenter Roeck coefficients = adm1275_coefficients; 660904b296fSGuenter Roeck vindex = (config & ADM1275_VRANGE) ? 0 : 1; 661904b296fSGuenter Roeck cindex = 2; 662904b296fSGuenter Roeck 6639d2ecfb7SGuenter Roeck if (config & ADM1275_VIN_VOUT_SELECT) 6645cf231a3SGuenter Roeck info->func[0] |= 6655cf231a3SGuenter Roeck PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT; 6669d2ecfb7SGuenter Roeck else 6675cf231a3SGuenter Roeck info->func[0] |= 6685cf231a3SGuenter Roeck PMBUS_HAVE_VIN | PMBUS_HAVE_STATUS_INPUT; 6695cf231a3SGuenter Roeck break; 6705cf231a3SGuenter Roeck case adm1276: 6719048539bSGuenter Roeck if (device_config & ADM1275_IOUT_WARN2_SELECT) 6729048539bSGuenter Roeck data->have_oc_fault = true; 6739048539bSGuenter Roeck else 6749048539bSGuenter Roeck data->have_uc_fault = true; 6759048539bSGuenter Roeck data->have_vout = true; 6769048539bSGuenter Roeck data->have_pin_max = true; 6779048539bSGuenter Roeck 678904b296fSGuenter Roeck coefficients = adm1276_coefficients; 679904b296fSGuenter Roeck vindex = (config & ADM1275_VRANGE) ? 0 : 1; 680904b296fSGuenter Roeck cindex = 2; 681904b296fSGuenter Roeck pindex = (config & ADM1275_VRANGE) ? 3 : 4; 682904b296fSGuenter Roeck 6835cf231a3SGuenter Roeck info->func[0] |= PMBUS_HAVE_VIN | PMBUS_HAVE_PIN 6845cf231a3SGuenter Roeck | PMBUS_HAVE_STATUS_INPUT; 6855cf231a3SGuenter Roeck if (config & ADM1275_VIN_VOUT_SELECT) 6865cf231a3SGuenter Roeck info->func[0] |= 6875cf231a3SGuenter Roeck PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT; 6885cf231a3SGuenter Roeck break; 689709066acSGuenter Roeck case adm1278: 690709066acSGuenter Roeck data->have_vout = true; 691709066acSGuenter Roeck data->have_pin_max = true; 692709066acSGuenter Roeck data->have_temp_max = true; 6937d45deb3SGuenter Roeck data->have_power_sampling = true; 694709066acSGuenter Roeck 695709066acSGuenter Roeck coefficients = adm1278_coefficients; 696709066acSGuenter Roeck vindex = 0; 697709066acSGuenter Roeck cindex = 1; 698709066acSGuenter Roeck pindex = 2; 699709066acSGuenter Roeck tindex = 3; 700709066acSGuenter Roeck 7012b3d0c19SYi Li info->func[0] |= PMBUS_HAVE_PIN | PMBUS_HAVE_STATUS_INPUT | 702a37881deSManikandan Elumalai PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT | 703a37881deSManikandan Elumalai PMBUS_HAVE_TEMP | PMBUS_HAVE_STATUS_TEMP; 7042b3d0c19SYi Li 705*98ac8af4SGuenter Roeck ret = adm1275_enable_vout_temp(data, client, config); 706b153a0bbSGuenter Roeck if (ret) 707b153a0bbSGuenter Roeck return ret; 7082b3d0c19SYi Li 709709066acSGuenter Roeck if (config & ADM1278_VIN_EN) 710709066acSGuenter Roeck info->func[0] |= PMBUS_HAVE_VIN; 711709066acSGuenter Roeck break; 71268a40382SGuenter Roeck case adm1293: 71368a40382SGuenter Roeck case adm1294: 71468a40382SGuenter Roeck data->have_iout_min = true; 71568a40382SGuenter Roeck data->have_pin_min = true; 71668a40382SGuenter Roeck data->have_pin_max = true; 71768a40382SGuenter Roeck data->have_mfr_vaux_status = true; 7187d45deb3SGuenter Roeck data->have_power_sampling = true; 71968a40382SGuenter Roeck 72068a40382SGuenter Roeck coefficients = adm1293_coefficients; 72168a40382SGuenter Roeck 72268a40382SGuenter Roeck voindex = 0; 72368a40382SGuenter Roeck switch (config & ADM1293_VIN_SEL_MASK) { 72468a40382SGuenter Roeck case ADM1293_VIN_SEL_012: /* 1.2V */ 72568a40382SGuenter Roeck vindex = 0; 72668a40382SGuenter Roeck break; 72768a40382SGuenter Roeck case ADM1293_VIN_SEL_074: /* 7.4V */ 72868a40382SGuenter Roeck vindex = 1; 72968a40382SGuenter Roeck break; 73068a40382SGuenter Roeck case ADM1293_VIN_SEL_210: /* 21V */ 73168a40382SGuenter Roeck vindex = 2; 73268a40382SGuenter Roeck break; 73368a40382SGuenter Roeck default: /* disabled */ 73468a40382SGuenter Roeck break; 73568a40382SGuenter Roeck } 73668a40382SGuenter Roeck 73768a40382SGuenter Roeck switch (config & ADM1293_IRANGE_MASK) { 73868a40382SGuenter Roeck case ADM1293_IRANGE_25: 73968a40382SGuenter Roeck cindex = 3; 74068a40382SGuenter Roeck break; 74168a40382SGuenter Roeck case ADM1293_IRANGE_50: 74268a40382SGuenter Roeck cindex = 4; 74368a40382SGuenter Roeck break; 74468a40382SGuenter Roeck case ADM1293_IRANGE_100: 74568a40382SGuenter Roeck cindex = 5; 74668a40382SGuenter Roeck break; 74768a40382SGuenter Roeck case ADM1293_IRANGE_200: 74868a40382SGuenter Roeck cindex = 6; 74968a40382SGuenter Roeck break; 75068a40382SGuenter Roeck } 75168a40382SGuenter Roeck 75268a40382SGuenter Roeck if (vindex >= 0) 75368a40382SGuenter Roeck pindex = 7 + vindex * 4 + (cindex - 3); 75468a40382SGuenter Roeck 75568a40382SGuenter Roeck if (config & ADM1293_VAUX_EN) 75668a40382SGuenter Roeck info->func[0] |= 75768a40382SGuenter Roeck PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT; 75868a40382SGuenter Roeck 75968a40382SGuenter Roeck info->func[0] |= PMBUS_HAVE_PIN | 76068a40382SGuenter Roeck PMBUS_HAVE_VIN | PMBUS_HAVE_STATUS_INPUT; 76168a40382SGuenter Roeck 76268a40382SGuenter Roeck break; 763904b296fSGuenter Roeck default: 764904b296fSGuenter Roeck dev_err(&client->dev, "Unsupported device\n"); 765904b296fSGuenter Roeck return -ENODEV; 766904b296fSGuenter Roeck } 76768a40382SGuenter Roeck 768a3cd66d7SPotin Lai if (data->have_power_sampling && 769a3cd66d7SPotin Lai of_property_read_u32(client->dev.of_node, 770a3cd66d7SPotin Lai "adi,power-sample-average", &avg) == 0) { 771a3cd66d7SPotin Lai if (!avg || avg > ADM1275_SAMPLES_AVG_MAX || 772a3cd66d7SPotin Lai BIT(__fls(avg)) != avg) { 773a3cd66d7SPotin Lai dev_err(&client->dev, 774a3cd66d7SPotin Lai "Invalid number of power samples"); 775a3cd66d7SPotin Lai return -EINVAL; 776a3cd66d7SPotin Lai } 777*98ac8af4SGuenter Roeck ret = adm1275_write_samples(data, client, true, ilog2(avg)); 778a3cd66d7SPotin Lai if (ret < 0) { 779a3cd66d7SPotin Lai dev_err(&client->dev, 780a3cd66d7SPotin Lai "Setting power sample averaging failed with error %d", 781a3cd66d7SPotin Lai ret); 782a3cd66d7SPotin Lai return ret; 783a3cd66d7SPotin Lai } 784a3cd66d7SPotin Lai } 785a3cd66d7SPotin Lai 786a3cd66d7SPotin Lai if (of_property_read_u32(client->dev.of_node, 787a3cd66d7SPotin Lai "adi,volt-curr-sample-average", &avg) == 0) { 788a3cd66d7SPotin Lai if (!avg || avg > ADM1275_SAMPLES_AVG_MAX || 789a3cd66d7SPotin Lai BIT(__fls(avg)) != avg) { 790a3cd66d7SPotin Lai dev_err(&client->dev, 791a3cd66d7SPotin Lai "Invalid number of voltage/current samples"); 792a3cd66d7SPotin Lai return -EINVAL; 793a3cd66d7SPotin Lai } 794*98ac8af4SGuenter Roeck ret = adm1275_write_samples(data, client, false, ilog2(avg)); 795a3cd66d7SPotin Lai if (ret < 0) { 796a3cd66d7SPotin Lai dev_err(&client->dev, 797a3cd66d7SPotin Lai "Setting voltage and current sample averaging failed with error %d", 798a3cd66d7SPotin Lai ret); 799a3cd66d7SPotin Lai return ret; 800a3cd66d7SPotin Lai } 801a3cd66d7SPotin Lai } 802a3cd66d7SPotin Lai 80368a40382SGuenter Roeck if (voindex < 0) 80468a40382SGuenter Roeck voindex = vindex; 805904b296fSGuenter Roeck if (vindex >= 0) { 806904b296fSGuenter Roeck info->m[PSC_VOLTAGE_IN] = coefficients[vindex].m; 807904b296fSGuenter Roeck info->b[PSC_VOLTAGE_IN] = coefficients[vindex].b; 808904b296fSGuenter Roeck info->R[PSC_VOLTAGE_IN] = coefficients[vindex].R; 80968a40382SGuenter Roeck } 81068a40382SGuenter Roeck if (voindex >= 0) { 81168a40382SGuenter Roeck info->m[PSC_VOLTAGE_OUT] = coefficients[voindex].m; 81268a40382SGuenter Roeck info->b[PSC_VOLTAGE_OUT] = coefficients[voindex].b; 81368a40382SGuenter Roeck info->R[PSC_VOLTAGE_OUT] = coefficients[voindex].R; 814904b296fSGuenter Roeck } 815904b296fSGuenter Roeck if (cindex >= 0) { 8166e5c06adSKun Yi /* Scale current with sense resistor value */ 8176e5c06adSKun Yi info->m[PSC_CURRENT_OUT] = 8186e5c06adSKun Yi coefficients[cindex].m * shunt / 1000; 819904b296fSGuenter Roeck info->b[PSC_CURRENT_OUT] = coefficients[cindex].b; 820904b296fSGuenter Roeck info->R[PSC_CURRENT_OUT] = coefficients[cindex].R; 821904b296fSGuenter Roeck } 822904b296fSGuenter Roeck if (pindex >= 0) { 8236e5c06adSKun Yi info->m[PSC_POWER] = 8246e5c06adSKun Yi coefficients[pindex].m * shunt / 1000; 825904b296fSGuenter Roeck info->b[PSC_POWER] = coefficients[pindex].b; 826904b296fSGuenter Roeck info->R[PSC_POWER] = coefficients[pindex].R; 8275cf231a3SGuenter Roeck } 828709066acSGuenter Roeck if (tindex >= 0) { 829709066acSGuenter Roeck info->m[PSC_TEMPERATURE] = coefficients[tindex].m; 830709066acSGuenter Roeck info->b[PSC_TEMPERATURE] = coefficients[tindex].b; 831709066acSGuenter Roeck info->R[PSC_TEMPERATURE] = coefficients[tindex].R; 832709066acSGuenter Roeck } 8339d2ecfb7SGuenter Roeck 834dd431939SStephen Kitt return pmbus_do_probe(client, info); 8359d2ecfb7SGuenter Roeck } 8369d2ecfb7SGuenter Roeck 8379d2ecfb7SGuenter Roeck static struct i2c_driver adm1275_driver = { 8389d2ecfb7SGuenter Roeck .driver = { 8399d2ecfb7SGuenter Roeck .name = "adm1275", 8409d2ecfb7SGuenter Roeck }, 8411975d167SUwe Kleine-König .probe = adm1275_probe, 8429d2ecfb7SGuenter Roeck .id_table = adm1275_id, 8439d2ecfb7SGuenter Roeck }; 8449d2ecfb7SGuenter Roeck 845f0967eeaSAxel Lin module_i2c_driver(adm1275_driver); 8469d2ecfb7SGuenter Roeck 8479d2ecfb7SGuenter Roeck MODULE_AUTHOR("Guenter Roeck"); 8485cf231a3SGuenter Roeck MODULE_DESCRIPTION("PMBus driver for Analog Devices ADM1275 and compatibles"); 8499d2ecfb7SGuenter Roeck MODULE_LICENSE("GPL"); 850b94ca77eSGuenter Roeck MODULE_IMPORT_NS(PMBUS); 851