| Author | Tokens | Token Proportion | Commits | Commit Proportion |
|---|---|---|---|---|
| Guenter Roeck | 3662 | 86.74% | 20 | 64.52% |
| Krzysztof Adamski | 196 | 4.64% | 1 | 3.23% |
| Potin Lai | 143 | 3.39% | 1 | 3.23% |
| Yi Li | 74 | 1.75% | 1 | 3.23% |
| Chu Lin | 60 | 1.42% | 2 | 6.45% |
| Kun Yi | 43 | 1.02% | 1 | 3.23% |
| Manikandan Elumalai | 26 | 0.62% | 1 | 3.23% |
| Stephen Kitt | 11 | 0.26% | 1 | 3.23% |
| Shikhar Dogra | 4 | 0.09% | 1 | 3.23% |
| Thomas Gleixner | 2 | 0.05% | 1 | 3.23% |
| Axel Lin | 1 | 0.02% | 1 | 3.23% |
| Total | 4222 | 31 |
// SPDX-License-Identifier: GPL-2.0-or-later /* * Hardware monitoring driver for Analog Devices ADM1275 Hot-Swap Controller * and Digital Power Monitor * * Copyright (c) 2011 Ericsson AB. * Copyright (c) 2018 Guenter Roeck */ #include <linux/kernel.h> #include <linux/module.h> #include <linux/init.h> #include <linux/err.h> #include <linux/slab.h> #include <linux/i2c.h> #include <linux/bitops.h> #include <linux/bitfield.h> #include <linux/log2.h> #include "pmbus.h" enum chips { adm1075, adm1272, adm1275, adm1276, adm1278, adm1293, adm1294 }; #define ADM1275_MFR_STATUS_IOUT_WARN2 BIT(0) #define ADM1293_MFR_STATUS_VAUX_UV_WARN BIT(5) #define ADM1293_MFR_STATUS_VAUX_OV_WARN BIT(6) #define ADM1275_PEAK_IOUT 0xd0 #define ADM1275_PEAK_VIN 0xd1 #define ADM1275_PEAK_VOUT 0xd2 #define ADM1275_PMON_CONFIG 0xd4 #define ADM1275_VIN_VOUT_SELECT BIT(6) #define ADM1275_VRANGE BIT(5) #define ADM1075_IRANGE_50 BIT(4) #define ADM1075_IRANGE_25 BIT(3) #define ADM1075_IRANGE_MASK (BIT(3) | BIT(4)) #define ADM1272_IRANGE BIT(0) #define ADM1278_TEMP1_EN BIT(3) #define ADM1278_VIN_EN BIT(2) #define ADM1278_VOUT_EN BIT(1) #define ADM1293_IRANGE_25 0 #define ADM1293_IRANGE_50 BIT(6) #define ADM1293_IRANGE_100 BIT(7) #define ADM1293_IRANGE_200 (BIT(6) | BIT(7)) #define ADM1293_IRANGE_MASK (BIT(6) | BIT(7)) #define ADM1293_VIN_SEL_012 BIT(2) #define ADM1293_VIN_SEL_074 BIT(3) #define ADM1293_VIN_SEL_210 (BIT(2) | BIT(3)) #define ADM1293_VIN_SEL_MASK (BIT(2) | BIT(3)) #define ADM1293_VAUX_EN BIT(1) #define ADM1278_PEAK_TEMP 0xd7 #define ADM1275_IOUT_WARN2_LIMIT 0xd7 #define ADM1275_DEVICE_CONFIG 0xd8 #define ADM1275_IOUT_WARN2_SELECT BIT(4) #define ADM1276_PEAK_PIN 0xda #define ADM1075_READ_VAUX 0xdd #define ADM1075_VAUX_OV_WARN_LIMIT 0xde #define ADM1075_VAUX_UV_WARN_LIMIT 0xdf #define ADM1293_IOUT_MIN 0xe3 #define ADM1293_PIN_MIN 0xe4 #define ADM1075_VAUX_STATUS 0xf6 #define ADM1075_VAUX_OV_WARN BIT(7) #define ADM1075_VAUX_UV_WARN BIT(6) #define ADM1275_VI_AVG_SHIFT 0 #define ADM1275_VI_AVG_MASK GENMASK(ADM1275_VI_AVG_SHIFT + 2, \ ADM1275_VI_AVG_SHIFT) #define ADM1275_SAMPLES_AVG_MAX 128 #define ADM1278_PWR_AVG_SHIFT 11 #define ADM1278_PWR_AVG_MASK GENMASK(ADM1278_PWR_AVG_SHIFT + 2, \ ADM1278_PWR_AVG_SHIFT) #define ADM1278_VI_AVG_SHIFT 8 #define ADM1278_VI_AVG_MASK GENMASK(ADM1278_VI_AVG_SHIFT + 2, \ ADM1278_VI_AVG_SHIFT) struct adm1275_data { int id; bool have_oc_fault; bool have_uc_fault; bool have_vout; bool have_vaux_status; bool have_mfr_vaux_status; bool have_iout_min; bool have_pin_min; bool have_pin_max; bool have_temp_max; bool have_power_sampling; struct pmbus_driver_info info; }; #define to_adm1275_data(x) container_of(x, struct adm1275_data, info) struct coefficients { s16 m; s16 b; s16 R; }; static const struct coefficients adm1075_coefficients[] = { [0] = { 27169, 0, -1 }, /* voltage */ [1] = { 806, 20475, -1 }, /* current, irange25 */ [2] = { 404, 20475, -1 }, /* current, irange50 */ [3] = { 8549, 0, -1 }, /* power, irange25 */ [4] = { 4279, 0, -1 }, /* power, irange50 */ }; static const struct coefficients adm1272_coefficients[] = { [0] = { 6770, 0, -2 }, /* voltage, vrange 60V */ [1] = { 4062, 0, -2 }, /* voltage, vrange 100V */ [2] = { 1326, 20480, -1 }, /* current, vsense range 15mV */ [3] = { 663, 20480, -1 }, /* current, vsense range 30mV */ [4] = { 3512, 0, -2 }, /* power, vrange 60V, irange 15mV */ [5] = { 21071, 0, -3 }, /* power, vrange 100V, irange 15mV */ [6] = { 17561, 0, -3 }, /* power, vrange 60V, irange 30mV */ [7] = { 10535, 0, -3 }, /* power, vrange 100V, irange 30mV */ [8] = { 42, 31871, -1 }, /* temperature */ }; static const struct coefficients adm1275_coefficients[] = { [0] = { 19199, 0, -2 }, /* voltage, vrange set */ [1] = { 6720, 0, -1 }, /* voltage, vrange not set */ [2] = { 807, 20475, -1 }, /* current */ }; static const struct coefficients adm1276_coefficients[] = { [0] = { 19199, 0, -2 }, /* voltage, vrange set */ [1] = { 6720, 0, -1 }, /* voltage, vrange not set */ [2] = { 807, 20475, -1 }, /* current */ [3] = { 6043, 0, -2 }, /* power, vrange set */ [4] = { 2115, 0, -1 }, /* power, vrange not set */ }; static const struct coefficients adm1278_coefficients[] = { [0] = { 19599, 0, -2 }, /* voltage */ [1] = { 800, 20475, -1 }, /* current */ [2] = { 6123, 0, -2 }, /* power */ [3] = { 42, 31880, -1 }, /* temperature */ }; static const struct coefficients adm1293_coefficients[] = { [0] = { 3333, -1, 0 }, /* voltage, vrange 1.2V */ [1] = { 5552, -5, -1 }, /* voltage, vrange 7.4V */ [2] = { 19604, -50, -2 }, /* voltage, vrange 21V */ [3] = { 8000, -100, -2 }, /* current, irange25 */ [4] = { 4000, -100, -2 }, /* current, irange50 */ [5] = { 20000, -1000, -3 }, /* current, irange100 */ [6] = { 10000, -1000, -3 }, /* current, irange200 */ [7] = { 10417, 0, -1 }, /* power, 1.2V, irange25 */ [8] = { 5208, 0, -1 }, /* power, 1.2V, irange50 */ [9] = { 26042, 0, -2 }, /* power, 1.2V, irange100 */ [10] = { 13021, 0, -2 }, /* power, 1.2V, irange200 */ [11] = { 17351, 0, -2 }, /* power, 7.4V, irange25 */ [12] = { 8676, 0, -2 }, /* power, 7.4V, irange50 */ [13] = { 4338, 0, -2 }, /* power, 7.4V, irange100 */ [14] = { 21689, 0, -3 }, /* power, 7.4V, irange200 */ [15] = { 6126, 0, -2 }, /* power, 21V, irange25 */ [16] = { 30631, 0, -3 }, /* power, 21V, irange50 */ [17] = { 15316, 0, -3 }, /* power, 21V, irange100 */ [18] = { 7658, 0, -3 }, /* power, 21V, irange200 */ }; static int adm1275_read_pmon_config(const struct adm1275_data *data, struct i2c_client *client, bool is_power) { int shift, ret; u16 mask; /* * The PMON configuration register is a 16-bit register only on chips * supporting power average sampling. On other chips it is an 8-bit * register. */ if (data->have_power_sampling) { ret = i2c_smbus_read_word_data(client, ADM1275_PMON_CONFIG); mask = is_power ? ADM1278_PWR_AVG_MASK : ADM1278_VI_AVG_MASK; shift = is_power ? ADM1278_PWR_AVG_SHIFT : ADM1278_VI_AVG_SHIFT; } else { ret = i2c_smbus_read_byte_data(client, ADM1275_PMON_CONFIG); mask = ADM1275_VI_AVG_MASK; shift = ADM1275_VI_AVG_SHIFT; } if (ret < 0) return ret; return (ret & mask) >> shift; } static int adm1275_write_pmon_config(const struct adm1275_data *data, struct i2c_client *client, bool is_power, u16 word) { int shift, ret; u16 mask; if (data->have_power_sampling) { ret = i2c_smbus_read_word_data(client, ADM1275_PMON_CONFIG); mask = is_power ? ADM1278_PWR_AVG_MASK : ADM1278_VI_AVG_MASK; shift = is_power ? ADM1278_PWR_AVG_SHIFT : ADM1278_VI_AVG_SHIFT; } else { ret = i2c_smbus_read_byte_data(client, ADM1275_PMON_CONFIG); mask = ADM1275_VI_AVG_MASK; shift = ADM1275_VI_AVG_SHIFT; } if (ret < 0) return ret; word = (ret & ~mask) | ((word << shift) & mask); if (data->have_power_sampling) ret = i2c_smbus_write_word_data(client, ADM1275_PMON_CONFIG, word); else ret = i2c_smbus_write_byte_data(client, ADM1275_PMON_CONFIG, word); return ret; } static int adm1275_read_word_data(struct i2c_client *client, int page, int phase, int reg) { const struct pmbus_driver_info *info = pmbus_get_driver_info(client); const struct adm1275_data *data = to_adm1275_data(info); int ret = 0; if (page > 0) return -ENXIO; switch (reg) { case PMBUS_IOUT_UC_FAULT_LIMIT: if (!data->have_uc_fault) return -ENXIO; ret = pmbus_read_word_data(client, 0, 0xff, ADM1275_IOUT_WARN2_LIMIT); break; case PMBUS_IOUT_OC_FAULT_LIMIT: if (!data->have_oc_fault) return -ENXIO; ret = pmbus_read_word_data(client, 0, 0xff, ADM1275_IOUT_WARN2_LIMIT); break; case PMBUS_VOUT_OV_WARN_LIMIT: if (data->have_vout) return -ENODATA; ret = pmbus_read_word_data(client, 0, 0xff, ADM1075_VAUX_OV_WARN_LIMIT); break; case PMBUS_VOUT_UV_WARN_LIMIT: if (data->have_vout) return -ENODATA; ret = pmbus_read_word_data(client, 0, 0xff, ADM1075_VAUX_UV_WARN_LIMIT); break; case PMBUS_READ_VOUT: if (data->have_vout) return -ENODATA; ret = pmbus_read_word_data(client, 0, 0xff, ADM1075_READ_VAUX); break; case PMBUS_VIRT_READ_IOUT_MIN: if (!data->have_iout_min) return -ENXIO; ret = pmbus_read_word_data(client, 0, 0xff, ADM1293_IOUT_MIN); break; case PMBUS_VIRT_READ_IOUT_MAX: ret = pmbus_read_word_data(client, 0, 0xff, ADM1275_PEAK_IOUT); break; case PMBUS_VIRT_READ_VOUT_MAX: ret = pmbus_read_word_data(client, 0, 0xff, ADM1275_PEAK_VOUT); break; case PMBUS_VIRT_READ_VIN_MAX: ret = pmbus_read_word_data(client, 0, 0xff, ADM1275_PEAK_VIN); break; case PMBUS_VIRT_READ_PIN_MIN: if (!data->have_pin_min) return -ENXIO; ret = pmbus_read_word_data(client, 0, 0xff, ADM1293_PIN_MIN); break; case PMBUS_VIRT_READ_PIN_MAX: if (!data->have_pin_max) return -ENXIO; ret = pmbus_read_word_data(client, 0, 0xff, ADM1276_PEAK_PIN); break; case PMBUS_VIRT_READ_TEMP_MAX: if (!data->have_temp_max) return -ENXIO; ret = pmbus_read_word_data(client, 0, 0xff, ADM1278_PEAK_TEMP); break; case PMBUS_VIRT_RESET_IOUT_HISTORY: case PMBUS_VIRT_RESET_VOUT_HISTORY: case PMBUS_VIRT_RESET_VIN_HISTORY: break; case PMBUS_VIRT_RESET_PIN_HISTORY: if (!data->have_pin_max) return -ENXIO; break; case PMBUS_VIRT_RESET_TEMP_HISTORY: if (!data->have_temp_max) return -ENXIO; break; case PMBUS_VIRT_POWER_SAMPLES: if (!data->have_power_sampling) return -ENXIO; ret = adm1275_read_pmon_config(data, client, true); if (ret < 0) break; ret = BIT(ret); break; case PMBUS_VIRT_IN_SAMPLES: case PMBUS_VIRT_CURR_SAMPLES: ret = adm1275_read_pmon_config(data, client, false); if (ret < 0) break; ret = BIT(ret); break; default: ret = -ENODATA; break; } return ret; } static int adm1275_write_word_data(struct i2c_client *client, int page, int reg, u16 word) { const struct pmbus_driver_info *info = pmbus_get_driver_info(client); const struct adm1275_data *data = to_adm1275_data(info); int ret; if (page > 0) return -ENXIO; switch (reg) { case PMBUS_IOUT_UC_FAULT_LIMIT: case PMBUS_IOUT_OC_FAULT_LIMIT: ret = pmbus_write_word_data(client, 0, ADM1275_IOUT_WARN2_LIMIT, word); break; case PMBUS_VIRT_RESET_IOUT_HISTORY: ret = pmbus_write_word_data(client, 0, ADM1275_PEAK_IOUT, 0); if (!ret && data->have_iout_min) ret = pmbus_write_word_data(client, 0, ADM1293_IOUT_MIN, 0); break; case PMBUS_VIRT_RESET_VOUT_HISTORY: ret = pmbus_write_word_data(client, 0, ADM1275_PEAK_VOUT, 0); break; case PMBUS_VIRT_RESET_VIN_HISTORY: ret = pmbus_write_word_data(client, 0, ADM1275_PEAK_VIN, 0); break; case PMBUS_VIRT_RESET_PIN_HISTORY: ret = pmbus_write_word_data(client, 0, ADM1276_PEAK_PIN, 0); if (!ret && data->have_pin_min) ret = pmbus_write_word_data(client, 0, ADM1293_PIN_MIN, 0); break; case PMBUS_VIRT_RESET_TEMP_HISTORY: ret = pmbus_write_word_data(client, 0, ADM1278_PEAK_TEMP, 0); break; case PMBUS_VIRT_POWER_SAMPLES: if (!data->have_power_sampling) return -ENXIO; word = clamp_val(word, 1, ADM1275_SAMPLES_AVG_MAX); ret = adm1275_write_pmon_config(data, client, true, ilog2(word)); break; case PMBUS_VIRT_IN_SAMPLES: case PMBUS_VIRT_CURR_SAMPLES: word = clamp_val(word, 1, ADM1275_SAMPLES_AVG_MAX); ret = adm1275_write_pmon_config(data, client, false, ilog2(word)); break; default: ret = -ENODATA; break; } return ret; } static int adm1275_read_byte_data(struct i2c_client *client, int page, int reg) { const struct pmbus_driver_info *info = pmbus_get_driver_info(client); const struct adm1275_data *data = to_adm1275_data(info); int mfr_status, ret; if (page > 0) return -ENXIO; switch (reg) { case PMBUS_STATUS_IOUT: ret = pmbus_read_byte_data(client, page, PMBUS_STATUS_IOUT); if (ret < 0) break; if (!data->have_oc_fault && !data->have_uc_fault) break; mfr_status = pmbus_read_byte_data(client, page, PMBUS_STATUS_MFR_SPECIFIC); if (mfr_status < 0) return mfr_status; if (mfr_status & ADM1275_MFR_STATUS_IOUT_WARN2) { ret |= data->have_oc_fault ? PB_IOUT_OC_FAULT : PB_IOUT_UC_FAULT; } break; case PMBUS_STATUS_VOUT: if (data->have_vout) return -ENODATA; ret = 0; if (data->have_vaux_status) { mfr_status = pmbus_read_byte_data(client, 0, ADM1075_VAUX_STATUS); if (mfr_status < 0) return mfr_status; if (mfr_status & ADM1075_VAUX_OV_WARN) ret |= PB_VOLTAGE_OV_WARNING; if (mfr_status & ADM1075_VAUX_UV_WARN) ret |= PB_VOLTAGE_UV_WARNING; } else if (data->have_mfr_vaux_status) { mfr_status = pmbus_read_byte_data(client, page, PMBUS_STATUS_MFR_SPECIFIC); if (mfr_status < 0) return mfr_status; if (mfr_status & ADM1293_MFR_STATUS_VAUX_OV_WARN) ret |= PB_VOLTAGE_OV_WARNING; if (mfr_status & ADM1293_MFR_STATUS_VAUX_UV_WARN) ret |= PB_VOLTAGE_UV_WARNING; } break; default: ret = -ENODATA; break; } return ret; } static const struct i2c_device_id adm1275_id[] = { { "adm1075", adm1075 }, { "adm1272", adm1272 }, { "adm1275", adm1275 }, { "adm1276", adm1276 }, { "adm1278", adm1278 }, { "adm1293", adm1293 }, { "adm1294", adm1294 }, { } }; MODULE_DEVICE_TABLE(i2c, adm1275_id); static int adm1275_probe(struct i2c_client *client) { s32 (*config_read_fn)(const struct i2c_client *client, u8 reg); u8 block_buffer[I2C_SMBUS_BLOCK_MAX + 1]; int config, device_config; int ret; struct pmbus_driver_info *info; struct adm1275_data *data; const struct i2c_device_id *mid; const struct coefficients *coefficients; int vindex = -1, voindex = -1, cindex = -1, pindex = -1; int tindex = -1; u32 shunt; u32 avg; if (!i2c_check_functionality(client->adapter, I2C_FUNC_SMBUS_READ_BYTE_DATA | I2C_FUNC_SMBUS_BLOCK_DATA)) return -ENODEV; ret = i2c_smbus_read_block_data(client, PMBUS_MFR_ID, block_buffer); if (ret < 0) { dev_err(&client->dev, "Failed to read Manufacturer ID\n"); return ret; } if (ret != 3 || strncmp(block_buffer, "ADI", 3)) { dev_err(&client->dev, "Unsupported Manufacturer ID\n"); return -ENODEV; } ret = i2c_smbus_read_block_data(client, PMBUS_MFR_MODEL, block_buffer); if (ret < 0) { dev_err(&client->dev, "Failed to read Manufacturer Model\n"); return ret; } for (mid = adm1275_id; mid->name[0]; mid++) { if (!strncasecmp(mid->name, block_buffer, strlen(mid->name))) break; } if (!mid->name[0]) { dev_err(&client->dev, "Unsupported device\n"); return -ENODEV; } if (strcmp(client->name, mid->name) != 0) dev_notice(&client->dev, "Device mismatch: Configured %s, detected %s\n", client->name, mid->name); if (mid->driver_data == adm1272 || mid->driver_data == adm1278 || mid->driver_data == adm1293 || mid->driver_data == adm1294) config_read_fn = i2c_smbus_read_word_data; else config_read_fn = i2c_smbus_read_byte_data; config = config_read_fn(client, ADM1275_PMON_CONFIG); if (config < 0) return config; device_config = config_read_fn(client, ADM1275_DEVICE_CONFIG); if (device_config < 0) return device_config; data = devm_kzalloc(&client->dev, sizeof(struct adm1275_data), GFP_KERNEL); if (!data) return -ENOMEM; if (of_property_read_u32(client->dev.of_node, "shunt-resistor-micro-ohms", &shunt)) shunt = 1000; /* 1 mOhm if not set via DT */ if (shunt == 0) return -EINVAL; data->id = mid->driver_data; info = &data->info; info->pages = 1; info->format[PSC_VOLTAGE_IN] = direct; info->format[PSC_VOLTAGE_OUT] = direct; info->format[PSC_CURRENT_OUT] = direct; info->format[PSC_POWER] = direct; info->format[PSC_TEMPERATURE] = direct; info->func[0] = PMBUS_HAVE_IOUT | PMBUS_HAVE_STATUS_IOUT | PMBUS_HAVE_SAMPLES; info->read_word_data = adm1275_read_word_data; info->read_byte_data = adm1275_read_byte_data; info->write_word_data = adm1275_write_word_data; switch (data->id) { case adm1075: if (device_config & ADM1275_IOUT_WARN2_SELECT) data->have_oc_fault = true; else data->have_uc_fault = true; data->have_pin_max = true; data->have_vaux_status = true; coefficients = adm1075_coefficients; vindex = 0; switch (config & ADM1075_IRANGE_MASK) { case ADM1075_IRANGE_25: cindex = 1; pindex = 3; break; case ADM1075_IRANGE_50: cindex = 2; pindex = 4; break; default: dev_err(&client->dev, "Invalid input current range"); break; } info->func[0] |= PMBUS_HAVE_VIN | PMBUS_HAVE_PIN | PMBUS_HAVE_STATUS_INPUT; if (config & ADM1275_VIN_VOUT_SELECT) info->func[0] |= PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT; break; case adm1272: data->have_vout = true; data->have_pin_max = true; data->have_temp_max = true; data->have_power_sampling = true; coefficients = adm1272_coefficients; vindex = (config & ADM1275_VRANGE) ? 1 : 0; cindex = (config & ADM1272_IRANGE) ? 3 : 2; /* pindex depends on the combination of the above */ switch (config & (ADM1275_VRANGE | ADM1272_IRANGE)) { case 0: default: pindex = 4; break; case ADM1275_VRANGE: pindex = 5; break; case ADM1272_IRANGE: pindex = 6; break; case ADM1275_VRANGE | ADM1272_IRANGE: pindex = 7; break; } tindex = 8; info->func[0] |= PMBUS_HAVE_PIN | PMBUS_HAVE_STATUS_INPUT | PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT | PMBUS_HAVE_TEMP | PMBUS_HAVE_STATUS_TEMP; /* Enable VOUT & TEMP1 if not enabled (disabled by default) */ if ((config & (ADM1278_VOUT_EN | ADM1278_TEMP1_EN)) != (ADM1278_VOUT_EN | ADM1278_TEMP1_EN)) { config |= ADM1278_VOUT_EN | ADM1278_TEMP1_EN; ret = i2c_smbus_write_byte_data(client, ADM1275_PMON_CONFIG, config); if (ret < 0) { dev_err(&client->dev, "Failed to enable VOUT monitoring\n"); return -ENODEV; } } if (config & ADM1278_VIN_EN) info->func[0] |= PMBUS_HAVE_VIN; break; case adm1275: if (device_config & ADM1275_IOUT_WARN2_SELECT) data->have_oc_fault = true; else data->have_uc_fault = true; data->have_vout = true; coefficients = adm1275_coefficients; vindex = (config & ADM1275_VRANGE) ? 0 : 1; cindex = 2; if (config & ADM1275_VIN_VOUT_SELECT) info->func[0] |= PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT; else info->func[0] |= PMBUS_HAVE_VIN | PMBUS_HAVE_STATUS_INPUT; break; case adm1276: if (device_config & ADM1275_IOUT_WARN2_SELECT) data->have_oc_fault = true; else data->have_uc_fault = true; data->have_vout = true; data->have_pin_max = true; coefficients = adm1276_coefficients; vindex = (config & ADM1275_VRANGE) ? 0 : 1; cindex = 2; pindex = (config & ADM1275_VRANGE) ? 3 : 4; info->func[0] |= PMBUS_HAVE_VIN | PMBUS_HAVE_PIN | PMBUS_HAVE_STATUS_INPUT; if (config & ADM1275_VIN_VOUT_SELECT) info->func[0] |= PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT; break; case adm1278: data->have_vout = true; data->have_pin_max = true; data->have_temp_max = true; data->have_power_sampling = true; coefficients = adm1278_coefficients; vindex = 0; cindex = 1; pindex = 2; tindex = 3; info->func[0] |= PMBUS_HAVE_PIN | PMBUS_HAVE_STATUS_INPUT | PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT | PMBUS_HAVE_TEMP | PMBUS_HAVE_STATUS_TEMP; /* Enable VOUT & TEMP1 if not enabled (disabled by default) */ if ((config & (ADM1278_VOUT_EN | ADM1278_TEMP1_EN)) != (ADM1278_VOUT_EN | ADM1278_TEMP1_EN)) { config |= ADM1278_VOUT_EN | ADM1278_TEMP1_EN; ret = i2c_smbus_write_word_data(client, ADM1275_PMON_CONFIG, config); if (ret < 0) { dev_err(&client->dev, "Failed to enable VOUT monitoring\n"); return -ENODEV; } } if (config & ADM1278_VIN_EN) info->func[0] |= PMBUS_HAVE_VIN; break; case adm1293: case adm1294: data->have_iout_min = true; data->have_pin_min = true; data->have_pin_max = true; data->have_mfr_vaux_status = true; data->have_power_sampling = true; coefficients = adm1293_coefficients; voindex = 0; switch (config & ADM1293_VIN_SEL_MASK) { case ADM1293_VIN_SEL_012: /* 1.2V */ vindex = 0; break; case ADM1293_VIN_SEL_074: /* 7.4V */ vindex = 1; break; case ADM1293_VIN_SEL_210: /* 21V */ vindex = 2; break; default: /* disabled */ break; } switch (config & ADM1293_IRANGE_MASK) { case ADM1293_IRANGE_25: cindex = 3; break; case ADM1293_IRANGE_50: cindex = 4; break; case ADM1293_IRANGE_100: cindex = 5; break; case ADM1293_IRANGE_200: cindex = 6; break; } if (vindex >= 0) pindex = 7 + vindex * 4 + (cindex - 3); if (config & ADM1293_VAUX_EN) info->func[0] |= PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT; info->func[0] |= PMBUS_HAVE_PIN | PMBUS_HAVE_VIN | PMBUS_HAVE_STATUS_INPUT; break; default: dev_err(&client->dev, "Unsupported device\n"); return -ENODEV; } if (data->have_power_sampling && of_property_read_u32(client->dev.of_node, "adi,power-sample-average", &avg) == 0) { if (!avg || avg > ADM1275_SAMPLES_AVG_MAX || BIT(__fls(avg)) != avg) { dev_err(&client->dev, "Invalid number of power samples"); return -EINVAL; } ret = adm1275_write_pmon_config(data, client, true, ilog2(avg)); if (ret < 0) { dev_err(&client->dev, "Setting power sample averaging failed with error %d", ret); return ret; } } if (of_property_read_u32(client->dev.of_node, "adi,volt-curr-sample-average", &avg) == 0) { if (!avg || avg > ADM1275_SAMPLES_AVG_MAX || BIT(__fls(avg)) != avg) { dev_err(&client->dev, "Invalid number of voltage/current samples"); return -EINVAL; } ret = adm1275_write_pmon_config(data, client, false, ilog2(avg)); if (ret < 0) { dev_err(&client->dev, "Setting voltage and current sample averaging failed with error %d", ret); return ret; } } if (voindex < 0) voindex = vindex; if (vindex >= 0) { info->m[PSC_VOLTAGE_IN] = coefficients[vindex].m; info->b[PSC_VOLTAGE_IN] = coefficients[vindex].b; info->R[PSC_VOLTAGE_IN] = coefficients[vindex].R; } if (voindex >= 0) { info->m[PSC_VOLTAGE_OUT] = coefficients[voindex].m; info->b[PSC_VOLTAGE_OUT] = coefficients[voindex].b; info->R[PSC_VOLTAGE_OUT] = coefficients[voindex].R; } if (cindex >= 0) { /* Scale current with sense resistor value */ info->m[PSC_CURRENT_OUT] = coefficients[cindex].m * shunt / 1000; info->b[PSC_CURRENT_OUT] = coefficients[cindex].b; info->R[PSC_CURRENT_OUT] = coefficients[cindex].R; } if (pindex >= 0) { info->m[PSC_POWER] = coefficients[pindex].m * shunt / 1000; info->b[PSC_POWER] = coefficients[pindex].b; info->R[PSC_POWER] = coefficients[pindex].R; } if (tindex >= 0) { info->m[PSC_TEMPERATURE] = coefficients[tindex].m; info->b[PSC_TEMPERATURE] = coefficients[tindex].b; info->R[PSC_TEMPERATURE] = coefficients[tindex].R; } return pmbus_do_probe(client, info); } static struct i2c_driver adm1275_driver = { .driver = { .name = "adm1275", }, .probe_new = adm1275_probe, .id_table = adm1275_id, }; module_i2c_driver(adm1275_driver); MODULE_AUTHOR("Guenter Roeck"); MODULE_DESCRIPTION("PMBus driver for Analog Devices ADM1275 and compatibles"); MODULE_LICENSE("GPL"); MODULE_IMPORT_NS(PMBUS);
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