diff options
| -rw-r--r-- | Documentation/hwmon/emc1403.rst | 17 | ||||
| -rw-r--r-- | drivers/hwmon/emc1403.c | 121 |
2 files changed, 124 insertions, 14 deletions
diff --git a/Documentation/hwmon/emc1403.rst b/Documentation/hwmon/emc1403.rst index 0de9616b24ed..57f833b1a800 100644 --- a/Documentation/hwmon/emc1403.rst +++ b/Documentation/hwmon/emc1403.rst @@ -45,6 +45,17 @@ Supported chips: - https://ww1.microchip.com/downloads/en/DeviceDoc/1423_1424.pdf + * SMSC / Microchip EMC1428, EMC1438 + + Addresses scanned: I2C 0x18, 0x4c, 0x4d + + Prefix: 'emc1428', 'emc1438' + + Datasheets: + + - https://ww1.microchip.com/downloads/aemDocuments/documents/OTH/ProductDocuments/DataSheets/20005275A.pdf + - https://ww1.microchip.com/downloads/en/DeviceDoc/EMC1438%20DS%20Rev.%201.0%20(04-29-10).pdf + Author: Kalhan Trisal <kalhan.trisal@intel.com @@ -53,10 +64,10 @@ Description ----------- The Standard Microsystems Corporation (SMSC) / Microchip EMC14xx chips -contain up to four temperature sensors. EMC14x2 support two sensors +contain up to eight temperature sensors. EMC14x2 support two sensors (one internal, one external). EMC14x3 support three sensors (one internal, -two external), and EMC14x4 support four sensors (one internal, three -external). +two external), EMC14x4 support four sensors (one internal, three external), +and EMC14x8 support eight sensors (one internal, seven external). The chips implement three limits for each sensor: low (tempX_min), high (tempX_max) and critical (tempX_crit.) The chips also implement an diff --git a/drivers/hwmon/emc1403.c b/drivers/hwmon/emc1403.c index 43322bb9aaa1..eca33220d34a 100644 --- a/drivers/hwmon/emc1403.c +++ b/drivers/hwmon/emc1403.c @@ -25,7 +25,7 @@ #define THERMAL_SMSC_ID_REG 0xfe #define THERMAL_REVISION_REG 0xff -enum emc1403_chip { emc1402, emc1403, emc1404 }; +enum emc1403_chip { emc1402, emc1403, emc1404, emc1428 }; struct thermal_data { enum emc1403_chip chip; @@ -100,6 +100,12 @@ static int emc1403_detect(struct i2c_client *client, case 0x27: strscpy(info->type, "emc1424", I2C_NAME_SIZE); break; + case 0x29: + strscpy(info->type, "emc1428", I2C_NAME_SIZE); + break; + case 0x59: + strscpy(info->type, "emc1438", I2C_NAME_SIZE); + break; case 0x60: strscpy(info->type, "emc1442", I2C_NAME_SIZE); break; @@ -130,6 +136,14 @@ static bool emc1403_regmap_is_volatile(struct device *dev, unsigned int reg) case 0x35: /* high limit status */ case 0x36: /* low limit status */ case 0x37: /* therm limit status */ + case 0x41: /* external diode 4 high byte */ + case 0x42: /* external diode 4 low byte */ + case 0x43: /* external diode 5 high byte */ + case 0x44: /* external diode 5 low byte */ + case 0x45: /* external diode 6 high byte */ + case 0x46: /* external diode 6 low byte */ + case 0x47: /* external diode 7 high byte */ + case 0x48: /* external diode 7 low byte */ return true; default: return false; @@ -177,6 +191,30 @@ static u8 emc1403_temp_regs[][4] = { [temp_crit] = 0x30, [temp_input] = 0x2a, }, + [4] = { + [temp_min] = 0x51, + [temp_max] = 0x50, + [temp_crit] = 0x64, + [temp_input] = 0x41, + }, + [5] = { + [temp_min] = 0x55, + [temp_max] = 0x54, + [temp_crit] = 0x65, + [temp_input] = 0x43 + }, + [6] = { + [temp_min] = 0x59, + [temp_max] = 0x58, + [temp_crit] = 0x66, + [temp_input] = 0x45, + }, + [7] = { + [temp_min] = 0x5d, + [temp_max] = 0x5c, + [temp_crit] = 0x67, + [temp_input] = 0x47, + }, }; static s8 emc1403_temp_regs_low[][4] = { @@ -204,27 +242,56 @@ static s8 emc1403_temp_regs_low[][4] = { [temp_crit] = -1, [temp_input] = 0x2b, }, + [4] = { + [temp_min] = 0x53, + [temp_max] = 0x52, + [temp_crit] = -1, + [temp_input] = 0x42, + }, + [5] = { + [temp_min] = 0x57, + [temp_max] = 0x56, + [temp_crit] = -1, + [temp_input] = 0x44, + }, + [6] = { + [temp_min] = 0x5b, + [temp_max] = 0x5a, + [temp_crit] = -1, + [temp_input] = 0x46, + }, + [7] = { + [temp_min] = 0x5f, + [temp_max] = 0x5e, + [temp_crit] = -1, + [temp_input] = 0x48, + }, }; static int __emc1403_get_temp(struct thermal_data *data, int channel, enum emc1403_reg_map map, long *val) { - unsigned int regval; + unsigned int regvalh; + unsigned int regvall = 0; int ret; s8 reg; - ret = regmap_read(data->regmap, emc1403_temp_regs[channel][map], ®val); + ret = regmap_read(data->regmap, emc1403_temp_regs[channel][map], ®valh); if (ret < 0) return ret; - *val = regval * 1000; reg = emc1403_temp_regs_low[channel][map]; if (reg >= 0) { - ret = regmap_read(data->regmap, reg, ®val); + ret = regmap_read(data->regmap, reg, ®vall); if (ret < 0) return ret; - *val += (regval >> 5) * 125; } + + if (data->chip == emc1428) + *val = sign_extend32((regvalh << 3) | (regvall >> 5), 10) * 125; + else + *val = ((regvalh << 3) | (regvall >> 5)) * 125; + return 0; } @@ -379,7 +446,10 @@ static int emc1403_set_hyst(struct thermal_data *data, long val) int hyst, ret; long limit; - val = clamp_val(val, 0, 255000); + if (data->chip == emc1428) + val = clamp_val(val, -128000, 127000); + else + val = clamp_val(val, 0, 255000); mutex_lock(&data->mutex); ret = __emc1403_get_temp(data, 0, temp_crit, &limit); @@ -387,7 +457,10 @@ static int emc1403_set_hyst(struct thermal_data *data, long val) goto unlock; hyst = limit - val; - hyst = clamp_val(DIV_ROUND_CLOSEST(hyst, 1000), 0, 255); + if (data->chip == emc1428) + hyst = clamp_val(DIV_ROUND_CLOSEST(hyst, 1000), 0, 127); + else + hyst = clamp_val(DIV_ROUND_CLOSEST(hyst, 1000), 0, 255); ret = regmap_write(data->regmap, 0x21, hyst); unlock: mutex_unlock(&data->mutex); @@ -407,14 +480,20 @@ static int emc1403_set_temp(struct thermal_data *data, int channel, mutex_lock(&data->mutex); if (regl >= 0) { - val = clamp_val(val, 0, 255875); + if (data->chip == emc1428) + val = clamp_val(val, -128000, 127875); + else + val = clamp_val(val, 0, 255875); regval = DIV_ROUND_CLOSEST(val, 125); - ret = regmap_write(data->regmap, regh, regval >> 3); + ret = regmap_write(data->regmap, regh, (regval >> 3) & 0xff); if (ret < 0) goto unlock; ret = regmap_write(data->regmap, regl, (regval & 0x07) << 5); } else { - val = clamp_val(val, 0, 255000); + if (data->chip == emc1428) + val = clamp_val(val, -128000, 127000); + else + val = clamp_val(val, 0, 255000); regval = DIV_ROUND_CLOSEST(val, 1000); ret = regmap_write(data->regmap, regh, regval); } @@ -484,6 +563,8 @@ static umode_t emc1403_temp_is_visible(const void *_data, u32 attr, int channel) return 0; if (data->chip == emc1403 && channel > 2) return 0; + if (data->chip != emc1428 && channel > 3) + return 0; switch (attr) { case hwmon_temp_input: @@ -548,6 +629,22 @@ static const struct hwmon_channel_info * const emc1403_info[] = { HWMON_T_INPUT | HWMON_T_MIN | HWMON_T_MAX | HWMON_T_CRIT | HWMON_T_MIN_HYST | HWMON_T_MAX_HYST | HWMON_T_CRIT_HYST | HWMON_T_MIN_ALARM | + HWMON_T_MAX_ALARM | HWMON_T_CRIT_ALARM | HWMON_T_FAULT, + HWMON_T_INPUT | HWMON_T_MIN | HWMON_T_MAX | + HWMON_T_CRIT | HWMON_T_MIN_HYST | HWMON_T_MAX_HYST | + HWMON_T_CRIT_HYST | HWMON_T_MIN_ALARM | + HWMON_T_MAX_ALARM | HWMON_T_CRIT_ALARM | HWMON_T_FAULT, + HWMON_T_INPUT | HWMON_T_MIN | HWMON_T_MAX | + HWMON_T_CRIT | HWMON_T_MIN_HYST | HWMON_T_MAX_HYST | + HWMON_T_CRIT_HYST | HWMON_T_MIN_ALARM | + HWMON_T_MAX_ALARM | HWMON_T_CRIT_ALARM | HWMON_T_FAULT, + HWMON_T_INPUT | HWMON_T_MIN | HWMON_T_MAX | + HWMON_T_CRIT | HWMON_T_MIN_HYST | HWMON_T_MAX_HYST | + HWMON_T_CRIT_HYST | HWMON_T_MIN_ALARM | + HWMON_T_MAX_ALARM | HWMON_T_CRIT_ALARM | HWMON_T_FAULT, + HWMON_T_INPUT | HWMON_T_MIN | HWMON_T_MAX | + HWMON_T_CRIT | HWMON_T_MIN_HYST | HWMON_T_MAX_HYST | + HWMON_T_CRIT_HYST | HWMON_T_MIN_ALARM | HWMON_T_MAX_ALARM | HWMON_T_CRIT_ALARM | HWMON_T_FAULT ), NULL @@ -575,6 +672,8 @@ static const struct i2c_device_id emc1403_idtable[] = { { "emc1422", emc1402 }, { "emc1423", emc1403 }, { "emc1424", emc1404 }, + { "emc1428", emc1428 }, + { "emc1438", emc1428 }, { "emc1442", emc1402 }, { } }; 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