^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1) // SPDX-License-Identifier: GPL-2.0-or-later
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3) * Driver for Lineage Compact Power Line series of power entry modules.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5) * Copyright (C) 2010, 2011 Ericsson AB.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7) * Documentation:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8) * http://www.lineagepower.com/oem/pdf/CPLI2C.pdf
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) #include <linux/kernel.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) #include <linux/module.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) #include <linux/init.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) #include <linux/err.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) #include <linux/slab.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) #include <linux/i2c.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) #include <linux/hwmon.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) #include <linux/hwmon-sysfs.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) #include <linux/jiffies.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) * This driver supports various Lineage Compact Power Line DC/DC and AC/DC
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) * converters such as CP1800, CP2000AC, CP2000DC, CP2100DC, and others.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) * The devices are nominally PMBus compliant. However, most standard PMBus
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) * commands are not supported. Specifically, all hardware monitoring and
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) * status reporting commands are non-standard. For this reason, a standard
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) * PMBus driver can not be used.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) * All Lineage CPL devices have a built-in I2C bus master selector (PCA9541).
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) * To ensure device access, this driver should only be used as client driver
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) * to the pca9541 I2C master selector driver.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) /* Command codes */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) #define PEM_OPERATION 0x01
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) #define PEM_CLEAR_INFO_FLAGS 0x03
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) #define PEM_VOUT_COMMAND 0x21
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) #define PEM_VOUT_OV_FAULT_LIMIT 0x40
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) #define PEM_READ_DATA_STRING 0xd0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) #define PEM_READ_INPUT_STRING 0xdc
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) #define PEM_READ_FIRMWARE_REV 0xdd
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) #define PEM_READ_RUN_TIMER 0xde
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) #define PEM_FAN_HI_SPEED 0xdf
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) #define PEM_FAN_NORMAL_SPEED 0xe0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) #define PEM_READ_FAN_SPEED 0xe1
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) /* offsets in data string */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) #define PEM_DATA_STATUS_2 0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) #define PEM_DATA_STATUS_1 1
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) #define PEM_DATA_ALARM_2 2
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) #define PEM_DATA_ALARM_1 3
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) #define PEM_DATA_VOUT_LSB 4
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) #define PEM_DATA_VOUT_MSB 5
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) #define PEM_DATA_CURRENT 6
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) #define PEM_DATA_TEMP 7
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) /* Virtual entries, to report constants */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) #define PEM_DATA_TEMP_MAX 10
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) #define PEM_DATA_TEMP_CRIT 11
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) /* offsets in input string */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) #define PEM_INPUT_VOLTAGE 0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) #define PEM_INPUT_POWER_LSB 1
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) #define PEM_INPUT_POWER_MSB 2
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) /* offsets in fan data */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) #define PEM_FAN_ADJUSTMENT 0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) #define PEM_FAN_FAN1 1
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) #define PEM_FAN_FAN2 2
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) #define PEM_FAN_FAN3 3
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) /* Status register bits */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74) #define STS1_OUTPUT_ON (1 << 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75) #define STS1_LEDS_FLASHING (1 << 1)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) #define STS1_EXT_FAULT (1 << 2)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77) #define STS1_SERVICE_LED_ON (1 << 3)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78) #define STS1_SHUTDOWN_OCCURRED (1 << 4)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79) #define STS1_INT_FAULT (1 << 5)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80) #define STS1_ISOLATION_TEST_OK (1 << 6)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82) #define STS2_ENABLE_PIN_HI (1 << 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83) #define STS2_DATA_OUT_RANGE (1 << 1)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84) #define STS2_RESTARTED_OK (1 << 1)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85) #define STS2_ISOLATION_TEST_FAIL (1 << 3)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86) #define STS2_HIGH_POWER_CAP (1 << 4)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87) #define STS2_INVALID_INSTR (1 << 5)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88) #define STS2_WILL_RESTART (1 << 6)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89) #define STS2_PEC_ERR (1 << 7)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91) /* Alarm register bits */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92) #define ALRM1_VIN_OUT_LIMIT (1 << 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93) #define ALRM1_VOUT_OUT_LIMIT (1 << 1)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94) #define ALRM1_OV_VOLT_SHUTDOWN (1 << 2)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95) #define ALRM1_VIN_OVERCURRENT (1 << 3)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96) #define ALRM1_TEMP_WARNING (1 << 4)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97) #define ALRM1_TEMP_SHUTDOWN (1 << 5)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98) #define ALRM1_PRIMARY_FAULT (1 << 6)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99) #define ALRM1_POWER_LIMIT (1 << 7)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) #define ALRM2_5V_OUT_LIMIT (1 << 1)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) #define ALRM2_TEMP_FAULT (1 << 2)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) #define ALRM2_OV_LOW (1 << 3)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) #define ALRM2_DCDC_TEMP_HIGH (1 << 4)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) #define ALRM2_PRI_TEMP_HIGH (1 << 5)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) #define ALRM2_NO_PRIMARY (1 << 6)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) #define ALRM2_FAN_FAULT (1 << 7)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) #define FIRMWARE_REV_LEN 4
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) #define DATA_STRING_LEN 9
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) #define INPUT_STRING_LEN 5 /* 4 for most devices */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) #define FAN_SPEED_LEN 5
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) struct pem_data {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) struct i2c_client *client;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) const struct attribute_group *groups[4];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) struct mutex update_lock;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) bool valid;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) bool fans_supported;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) int input_length;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) unsigned long last_updated; /* in jiffies */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) u8 firmware_rev[FIRMWARE_REV_LEN];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) u8 data_string[DATA_STRING_LEN];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) u8 input_string[INPUT_STRING_LEN];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) u8 fan_speed[FAN_SPEED_LEN];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) static int pem_read_block(struct i2c_client *client, u8 command, u8 *data,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) int data_len)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) u8 block_buffer[I2C_SMBUS_BLOCK_MAX];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) int result;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) result = i2c_smbus_read_block_data(client, command, block_buffer);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) if (unlikely(result < 0))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) goto abort;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) if (unlikely(result == 0xff || result != data_len)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) result = -EIO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) goto abort;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) memcpy(data, block_buffer, data_len);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144) result = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) abort:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) return result;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) static struct pem_data *pem_update_device(struct device *dev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) struct pem_data *data = dev_get_drvdata(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) struct i2c_client *client = data->client;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153) struct pem_data *ret = data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155) mutex_lock(&data->update_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157) if (time_after(jiffies, data->last_updated + HZ) || !data->valid) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158) int result;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160) /* Read data string */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161) result = pem_read_block(client, PEM_READ_DATA_STRING,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162) data->data_string,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163) sizeof(data->data_string));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164) if (unlikely(result < 0)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165) ret = ERR_PTR(result);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166) goto abort;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169) /* Read input string */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170) if (data->input_length) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171) result = pem_read_block(client, PEM_READ_INPUT_STRING,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172) data->input_string,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173) data->input_length);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174) if (unlikely(result < 0)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175) ret = ERR_PTR(result);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176) goto abort;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180) /* Read fan speeds */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181) if (data->fans_supported) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182) result = pem_read_block(client, PEM_READ_FAN_SPEED,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183) data->fan_speed,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184) sizeof(data->fan_speed));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185) if (unlikely(result < 0)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186) ret = ERR_PTR(result);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187) goto abort;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 191) i2c_smbus_write_byte(client, PEM_CLEAR_INFO_FLAGS);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 192)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 193) data->last_updated = jiffies;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 194) data->valid = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 195) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 196) abort:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 197) mutex_unlock(&data->update_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 198) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 199) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 200)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 201) static long pem_get_data(u8 *data, int len, int index)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 202) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 203) long val;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 204)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 205) switch (index) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 206) case PEM_DATA_VOUT_LSB:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 207) val = (data[index] + (data[index+1] << 8)) * 5 / 2;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 208) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 209) case PEM_DATA_CURRENT:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 210) val = data[index] * 200;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 211) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 212) case PEM_DATA_TEMP:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 213) val = data[index] * 1000;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 214) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 215) case PEM_DATA_TEMP_MAX:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 216) val = 97 * 1000; /* 97 degrees C per datasheet */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 217) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 218) case PEM_DATA_TEMP_CRIT:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 219) val = 107 * 1000; /* 107 degrees C per datasheet */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 220) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 221) default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 222) WARN_ON_ONCE(1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 223) val = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 224) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 225) return val;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 226) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 227)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 228) static long pem_get_input(u8 *data, int len, int index)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 229) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 230) long val;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 231)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 232) switch (index) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 233) case PEM_INPUT_VOLTAGE:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 234) if (len == INPUT_STRING_LEN)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 235) val = (data[index] + (data[index+1] << 8) - 75) * 1000;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 236) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 237) val = (data[index] - 75) * 1000;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 238) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 239) case PEM_INPUT_POWER_LSB:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 240) if (len == INPUT_STRING_LEN)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 241) index++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 242) val = (data[index] + (data[index+1] << 8)) * 1000000L;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 243) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 244) default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 245) WARN_ON_ONCE(1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 246) val = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 247) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 248) return val;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 249) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 250)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 251) static long pem_get_fan(u8 *data, int len, int index)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 252) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 253) long val;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 254)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 255) switch (index) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 256) case PEM_FAN_FAN1:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 257) case PEM_FAN_FAN2:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 258) case PEM_FAN_FAN3:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 259) val = data[index] * 100;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 260) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 261) default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 262) WARN_ON_ONCE(1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 263) val = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 264) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 265) return val;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 266) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 267)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 268) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 269) * Show boolean, either a fault or an alarm.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 270) * .nr points to the register, .index is the bit mask to check
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 271) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 272) static ssize_t pem_bool_show(struct device *dev, struct device_attribute *da,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 273) char *buf)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 274) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 275) struct sensor_device_attribute_2 *attr = to_sensor_dev_attr_2(da);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 276) struct pem_data *data = pem_update_device(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 277) u8 status;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 278)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 279) if (IS_ERR(data))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 280) return PTR_ERR(data);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 281)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 282) status = data->data_string[attr->nr] & attr->index;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 283) return snprintf(buf, PAGE_SIZE, "%d\n", !!status);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 284) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 285)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 286) static ssize_t pem_data_show(struct device *dev, struct device_attribute *da,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 287) char *buf)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 288) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 289) struct sensor_device_attribute *attr = to_sensor_dev_attr(da);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 290) struct pem_data *data = pem_update_device(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 291) long value;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 292)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 293) if (IS_ERR(data))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 294) return PTR_ERR(data);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 295)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 296) value = pem_get_data(data->data_string, sizeof(data->data_string),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 297) attr->index);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 298)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 299) return snprintf(buf, PAGE_SIZE, "%ld\n", value);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 300) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 301)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 302) static ssize_t pem_input_show(struct device *dev, struct device_attribute *da,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 303) char *buf)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 304) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 305) struct sensor_device_attribute *attr = to_sensor_dev_attr(da);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 306) struct pem_data *data = pem_update_device(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 307) long value;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 308)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 309) if (IS_ERR(data))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 310) return PTR_ERR(data);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 311)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 312) value = pem_get_input(data->input_string, sizeof(data->input_string),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 313) attr->index);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 314)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 315) return snprintf(buf, PAGE_SIZE, "%ld\n", value);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 316) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 317)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 318) static ssize_t pem_fan_show(struct device *dev, struct device_attribute *da,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 319) char *buf)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 320) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 321) struct sensor_device_attribute *attr = to_sensor_dev_attr(da);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 322) struct pem_data *data = pem_update_device(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 323) long value;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 324)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 325) if (IS_ERR(data))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 326) return PTR_ERR(data);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 327)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 328) value = pem_get_fan(data->fan_speed, sizeof(data->fan_speed),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 329) attr->index);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 330)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 331) return snprintf(buf, PAGE_SIZE, "%ld\n", value);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 332) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 333)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 334) /* Voltages */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 335) static SENSOR_DEVICE_ATTR_RO(in1_input, pem_data, PEM_DATA_VOUT_LSB);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 336) static SENSOR_DEVICE_ATTR_2_RO(in1_alarm, pem_bool, PEM_DATA_ALARM_1,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 337) ALRM1_VOUT_OUT_LIMIT);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 338) static SENSOR_DEVICE_ATTR_2_RO(in1_crit_alarm, pem_bool, PEM_DATA_ALARM_1,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 339) ALRM1_OV_VOLT_SHUTDOWN);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 340) static SENSOR_DEVICE_ATTR_RO(in2_input, pem_input, PEM_INPUT_VOLTAGE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 341) static SENSOR_DEVICE_ATTR_2_RO(in2_alarm, pem_bool, PEM_DATA_ALARM_1,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 342) ALRM1_VIN_OUT_LIMIT | ALRM1_PRIMARY_FAULT);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 343)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 344) /* Currents */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 345) static SENSOR_DEVICE_ATTR_RO(curr1_input, pem_data, PEM_DATA_CURRENT);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 346) static SENSOR_DEVICE_ATTR_2_RO(curr1_alarm, pem_bool, PEM_DATA_ALARM_1,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 347) ALRM1_VIN_OVERCURRENT);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 348)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 349) /* Power */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 350) static SENSOR_DEVICE_ATTR_RO(power1_input, pem_input, PEM_INPUT_POWER_LSB);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 351) static SENSOR_DEVICE_ATTR_2_RO(power1_alarm, pem_bool, PEM_DATA_ALARM_1,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 352) ALRM1_POWER_LIMIT);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 353)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 354) /* Fans */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 355) static SENSOR_DEVICE_ATTR_RO(fan1_input, pem_fan, PEM_FAN_FAN1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 356) static SENSOR_DEVICE_ATTR_RO(fan2_input, pem_fan, PEM_FAN_FAN2);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 357) static SENSOR_DEVICE_ATTR_RO(fan3_input, pem_fan, PEM_FAN_FAN3);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 358) static SENSOR_DEVICE_ATTR_2_RO(fan1_alarm, pem_bool, PEM_DATA_ALARM_2,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 359) ALRM2_FAN_FAULT);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 360)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 361) /* Temperatures */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 362) static SENSOR_DEVICE_ATTR_RO(temp1_input, pem_data, PEM_DATA_TEMP);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 363) static SENSOR_DEVICE_ATTR_RO(temp1_max, pem_data, PEM_DATA_TEMP_MAX);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 364) static SENSOR_DEVICE_ATTR_RO(temp1_crit, pem_data, PEM_DATA_TEMP_CRIT);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 365) static SENSOR_DEVICE_ATTR_2_RO(temp1_alarm, pem_bool, PEM_DATA_ALARM_1,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 366) ALRM1_TEMP_WARNING);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 367) static SENSOR_DEVICE_ATTR_2_RO(temp1_crit_alarm, pem_bool, PEM_DATA_ALARM_1,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 368) ALRM1_TEMP_SHUTDOWN);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 369) static SENSOR_DEVICE_ATTR_2_RO(temp1_fault, pem_bool, PEM_DATA_ALARM_2,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 370) ALRM2_TEMP_FAULT);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 371)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 372) static struct attribute *pem_attributes[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 373) &sensor_dev_attr_in1_input.dev_attr.attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 374) &sensor_dev_attr_in1_alarm.dev_attr.attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 375) &sensor_dev_attr_in1_crit_alarm.dev_attr.attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 376) &sensor_dev_attr_in2_alarm.dev_attr.attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 377)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 378) &sensor_dev_attr_curr1_alarm.dev_attr.attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 379)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 380) &sensor_dev_attr_power1_alarm.dev_attr.attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 381)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 382) &sensor_dev_attr_fan1_alarm.dev_attr.attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 383)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 384) &sensor_dev_attr_temp1_input.dev_attr.attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 385) &sensor_dev_attr_temp1_max.dev_attr.attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 386) &sensor_dev_attr_temp1_crit.dev_attr.attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 387) &sensor_dev_attr_temp1_alarm.dev_attr.attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 388) &sensor_dev_attr_temp1_crit_alarm.dev_attr.attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 389) &sensor_dev_attr_temp1_fault.dev_attr.attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 390)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 391) NULL,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 392) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 393)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 394) static const struct attribute_group pem_group = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 395) .attrs = pem_attributes,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 396) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 397)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 398) static struct attribute *pem_input_attributes[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 399) &sensor_dev_attr_in2_input.dev_attr.attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 400) &sensor_dev_attr_curr1_input.dev_attr.attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 401) &sensor_dev_attr_power1_input.dev_attr.attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 402) NULL
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 403) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 404)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 405) static const struct attribute_group pem_input_group = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 406) .attrs = pem_input_attributes,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 407) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 408)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 409) static struct attribute *pem_fan_attributes[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 410) &sensor_dev_attr_fan1_input.dev_attr.attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 411) &sensor_dev_attr_fan2_input.dev_attr.attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 412) &sensor_dev_attr_fan3_input.dev_attr.attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 413) NULL
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 414) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 415)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 416) static const struct attribute_group pem_fan_group = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 417) .attrs = pem_fan_attributes,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 418) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 419)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 420) static int pem_probe(struct i2c_client *client)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 421) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 422) struct i2c_adapter *adapter = client->adapter;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 423) struct device *dev = &client->dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 424) struct device *hwmon_dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 425) struct pem_data *data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 426) int ret, idx = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 427)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 428) if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BLOCK_DATA
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 429) | I2C_FUNC_SMBUS_WRITE_BYTE))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 430) return -ENODEV;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 431)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 432) data = devm_kzalloc(dev, sizeof(*data), GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 433) if (!data)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 434) return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 435)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 436) data->client = client;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 437) mutex_init(&data->update_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 438)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 439) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 440) * We use the next two commands to determine if the device is really
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 441) * there.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 442) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 443) ret = pem_read_block(client, PEM_READ_FIRMWARE_REV,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 444) data->firmware_rev, sizeof(data->firmware_rev));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 445) if (ret < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 446) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 447)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 448) ret = i2c_smbus_write_byte(client, PEM_CLEAR_INFO_FLAGS);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 449) if (ret < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 450) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 451)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 452) dev_info(dev, "Firmware revision %d.%d.%d\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 453) data->firmware_rev[0], data->firmware_rev[1],
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 454) data->firmware_rev[2]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 455)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 456) /* sysfs hooks */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 457) data->groups[idx++] = &pem_group;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 458)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 459) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 460) * Check if input readings are supported.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 461) * This is the case if we can read input data,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 462) * and if the returned data is not all zeros.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 463) * Note that input alarms are always supported.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 464) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 465) ret = pem_read_block(client, PEM_READ_INPUT_STRING,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 466) data->input_string,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 467) sizeof(data->input_string) - 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 468) if (!ret && (data->input_string[0] || data->input_string[1] ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 469) data->input_string[2]))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 470) data->input_length = sizeof(data->input_string) - 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 471) else if (ret < 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 472) /* Input string is one byte longer for some devices */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 473) ret = pem_read_block(client, PEM_READ_INPUT_STRING,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 474) data->input_string,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 475) sizeof(data->input_string));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 476) if (!ret && (data->input_string[0] || data->input_string[1] ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 477) data->input_string[2] || data->input_string[3]))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 478) data->input_length = sizeof(data->input_string);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 479) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 480)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 481) if (data->input_length)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 482) data->groups[idx++] = &pem_input_group;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 483)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 484) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 485) * Check if fan speed readings are supported.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 486) * This is the case if we can read fan speed data,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 487) * and if the returned data is not all zeros.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 488) * Note that the fan alarm is always supported.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 489) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 490) ret = pem_read_block(client, PEM_READ_FAN_SPEED,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 491) data->fan_speed,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 492) sizeof(data->fan_speed));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 493) if (!ret && (data->fan_speed[0] || data->fan_speed[1] ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 494) data->fan_speed[2] || data->fan_speed[3])) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 495) data->fans_supported = true;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 496) data->groups[idx++] = &pem_fan_group;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 497) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 498)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 499) hwmon_dev = devm_hwmon_device_register_with_groups(dev, client->name,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 500) data, data->groups);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 501) return PTR_ERR_OR_ZERO(hwmon_dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 502) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 503)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 504) static const struct i2c_device_id pem_id[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 505) {"lineage_pem", 0},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 506) {}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 507) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 508) MODULE_DEVICE_TABLE(i2c, pem_id);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 509)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 510) static struct i2c_driver pem_driver = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 511) .driver = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 512) .name = "lineage_pem",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 513) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 514) .probe_new = pem_probe,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 515) .id_table = pem_id,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 516) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 517)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 518) module_i2c_driver(pem_driver);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 519)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 520) MODULE_AUTHOR("Guenter Roeck <linux@roeck-us.net>");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 521) MODULE_DESCRIPTION("Lineage CPL PEM hardware monitoring driver");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 522) MODULE_LICENSE("GPL");
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
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