diff options
Diffstat (limited to 'driver/temp_sensor/tmp411.c')
| -rw-r--r-- | driver/temp_sensor/tmp411.c | 330 |
1 files changed, 0 insertions, 330 deletions
diff --git a/driver/temp_sensor/tmp411.c b/driver/temp_sensor/tmp411.c deleted file mode 100644 index ef22052da8..0000000000 --- a/driver/temp_sensor/tmp411.c +++ /dev/null @@ -1,330 +0,0 @@ -/* Copyright 2017 The Chromium OS Authors. All rights reserved. - * Use of this source code is governed by a BSD-style license that can be - * found in the LICENSE file. - */ - -/* TMP411 temperature sensor module for Chrome EC */ - -#include "common.h" -#include "console.h" -#include "tmp411.h" -#include "gpio.h" -#include "i2c.h" -#include "hooks.h" -#include "util.h" - -static int temp_val_local; -static int temp_val_remote1; -static uint8_t is_sensor_shutdown; - -/** - * Determine whether the sensor is powered. - * - * @return non-zero the tmp411 sensor is powered. - */ -static int has_power(void) -{ -#ifdef CONFIG_TEMP_SENSOR_POWER_GPIO - return gpio_get_level(CONFIG_TEMP_SENSOR_POWER_GPIO); -#else - return !is_sensor_shutdown; -#endif -} - -static int raw_read8(const int offset, int *data_ptr) -{ - return i2c_read8(I2C_PORT_THERMAL, TMP411_I2C_ADDR, offset, data_ptr); -} - -static int raw_write8(const int offset, int data) -{ - return i2c_write8(I2C_PORT_THERMAL, TMP411_I2C_ADDR, offset, data); -} - -static int get_temp(const int offset, int *temp_ptr) -{ - int rv; - int temp_raw = 0; - - rv = raw_read8(offset, &temp_raw); - if (rv < 0) - return rv; - - *temp_ptr = (int)(int8_t)temp_raw; - return EC_SUCCESS; -} - -#ifdef CONFIG_CMD_TEMP_SENSOR -static int tmp411_set_temp(const int offset, int temp) -{ - if (temp < -127 || temp > 127) - return EC_ERROR_INVAL; - - return raw_write8(offset, (uint8_t)temp); -} -#endif - -int tmp411_get_val(int idx, int *temp_ptr) -{ - if (!has_power()) - return EC_ERROR_NOT_POWERED; - - switch (idx) { - case TMP411_IDX_LOCAL: - *temp_ptr = temp_val_local; - break; - case TMP411_IDX_REMOTE1: - *temp_ptr = temp_val_remote1; - break; - default: - return EC_ERROR_UNKNOWN; - } - - return EC_SUCCESS; -} - -static int tmp411_shutdown(uint8_t want_shutdown) -{ - int ret, value; - - if (want_shutdown == is_sensor_shutdown) - return EC_SUCCESS; - - ret = raw_read8(TMP411_CONFIGURATION1_R, &value); - if (ret < 0) { - ccprintf("ERROR: Temp sensor I2C read8 error.\n"); - return ret; - } - - if (want_shutdown && !(value & TMP411_CONFIG1_RUN_L)) { - /* tmp411 is running, and want it to shutdown */ - /* CONFIG REG1 BIT6: 0=Run, 1=Shutdown */ - /* shut it down */ - value |= TMP411_CONFIG1_RUN_L; - ret = raw_write8(TMP411_CONFIGURATION1_R, value); - } else if (!want_shutdown && (value & TMP411_CONFIG1_RUN_L)) { - /* tmp411 is shutdown, and want turn it on */ - value &= ~TMP411_CONFIG1_RUN_L; - ret = raw_write8(TMP411_CONFIGURATION1_R, value); - } - /* else, the current setting is exactly what you want */ - - is_sensor_shutdown = want_shutdown; - return ret; -} - -static int tmp411_set_therm_mode(void) -{ - int ret = 0; - int data = 0; - - ret = raw_read8(TMP411_CONFIGURATION1_R, &data); - if (ret) - return EC_ERROR_UNKNOWN; - - data |= TMP411_CONFIG1_MODE; - ret = raw_write8(TMP411_CONFIGURATION1_W, data); - if (ret) - return EC_ERROR_UNKNOWN; - - return EC_SUCCESS; -} - -int tmp411_set_therm_limit(int channel, int limit_c, int hysteresis) -{ - int ret = 0; - int reg = 0; - - if (channel >= TMP411_CHANNEL_COUNT) - return EC_ERROR_INVAL; - - if (hysteresis > TMP411_HYSTERESIS_HIGH_LIMIT || - hysteresis < TMP411_HYSTERESIS_LOW_LIMIT) - return EC_ERROR_INVAL; - - /* hysteresis must be less than high limit */ - if (hysteresis > limit_c) - return EC_ERROR_INVAL; - - if (tmp411_set_therm_mode() != EC_SUCCESS) - return EC_ERROR_UNKNOWN; - - switch (channel) { - case TMP411_CHANNEL_LOCAL: - reg = TMP411_LOCAL_HIGH_LIMIT_W; - break; - case TMP411_CHANNEL_REMOTE1: - reg = TMP411_REMOTE1_HIGH_LIMIT_W; - break; - } - - ret = raw_write8(reg, limit_c); - if (ret) - return EC_ERROR_UNKNOWN; - - ret = raw_write8(TMP411_THERM_HYSTERESIS, hysteresis); - if (ret) - return EC_ERROR_UNKNOWN; - - return EC_SUCCESS; -} - -static void tmp411_temp_sensor_poll(void) -{ - int temp_c; - - if (!has_power()) - return; - - if (get_temp(TMP411_LOCAL, &temp_c) == EC_SUCCESS) - temp_val_local = C_TO_K(temp_c); - - if (get_temp(TMP411_REMOTE1, &temp_c) == EC_SUCCESS) - temp_val_remote1 = C_TO_K(temp_c); - -} -DECLARE_HOOK(HOOK_SECOND, tmp411_temp_sensor_poll, HOOK_PRIO_TEMP_SENSOR); - -#ifdef CONFIG_CMD_TEMP_SENSOR -static void print_temps( - const char *name, - const int tmp411_temp_reg, - const int tmp411_therm_limit_reg, - const int tmp411_high_limit_reg, - const int tmp411_low_limit_reg) -{ - int value; - - if (!has_power()) { - ccprintf(" TMP411 is shutdown\n"); - return; - } - - ccprintf("%s:\n", name); - - if (get_temp(tmp411_temp_reg, &value) == EC_SUCCESS) - ccprintf(" Temp %3dC\n", value); - - if (get_temp(tmp411_therm_limit_reg, &value) == EC_SUCCESS) - ccprintf(" Therm Trip %3dC\n", value); - - if (get_temp(tmp411_high_limit_reg, &value) == EC_SUCCESS) - ccprintf(" High Alarm %3dC\n", value); - - if (get_temp(tmp411_low_limit_reg, &value) == EC_SUCCESS) - ccprintf(" Low Alarm %3dC\n", value); -} - -static int print_status(void) -{ - int value; - - print_temps("Local", TMP411_LOCAL, - TMP411_LOCAL_THERM_LIMIT, - TMP411_LOCAL_HIGH_LIMIT_R, - TMP411_LOCAL_LOW_LIMIT_R); - - print_temps("Remote1", TMP411_REMOTE1, - TMP411_REMOTE1_THERM_LIMIT, - TMP411_REMOTE1_HIGH_LIMIT_R, - TMP411_REMOTE1_LOW_LIMIT_R); - - ccprintf("\n"); - - if (raw_read8(TMP411_STATUS_R, &value) == EC_SUCCESS) - ccprintf("STATUS: %pb\n", BINARY_VALUE(value, 8)); - - if (raw_read8(TMP411_CONFIGURATION1_R, &value) == EC_SUCCESS) - ccprintf("CONFIG1: %pb\n", BINARY_VALUE(value, 8)); - - return EC_SUCCESS; -} - -static int command_tmp411(int argc, char **argv) -{ - char *command; - char *e; - char *power; - int data; - int offset; - int rv; - - /* handle "power" command before checking the power status. */ - if ((argc == 3) && !strcasecmp(argv[1], "power")) { - power = argv[2]; - if (!strncasecmp(power, "on", sizeof("on"))) { - rv = tmp411_set_power(TMP411_POWER_ON); - if (!rv) - print_status(); - } else if (!strncasecmp(power, "off", sizeof("off"))) - rv = tmp411_set_power(TMP411_POWER_OFF); - else - return EC_ERROR_PARAM2; - ccprintf("Set TMP411 %s\n", power); - return rv; - } - - if (!has_power()) { - ccprintf("ERROR: Temp sensor not powered.\n"); - return EC_ERROR_NOT_POWERED; - } - - /* If no args just print status */ - if (argc == 1) - return print_status(); - - if (argc < 3) - return EC_ERROR_PARAM_COUNT; - - command = argv[1]; - offset = strtoi(argv[2], &e, 0); - if (*e || offset < 0 || offset > 255) - return EC_ERROR_PARAM2; - - if (!strcasecmp(command, "getbyte")) { - rv = raw_read8(offset, &data); - if (rv < 0) - return rv; - ccprintf("Byte at offset 0x%02x is %pb\n", - offset, BINARY_VALUE(data, 8)); - return rv; - } - - /* Remaining commands are "tmp411 set-command offset data" */ - if (argc != 4) - return EC_ERROR_PARAM_COUNT; - - data = strtoi(argv[3], &e, 0); - if (*e) - return EC_ERROR_PARAM3; - - if (!strcasecmp(command, "settemp")) { - ccprintf("Setting 0x%02x to %dC\n", offset, data); - rv = tmp411_set_temp(offset, data); - } else if (!strcasecmp(command, "setbyte")) { - ccprintf("Setting 0x%02x to 0x%02x\n", offset, data); - rv = raw_write8(offset, data); - } else - return EC_ERROR_PARAM1; - - return rv; -} -DECLARE_CONSOLE_COMMAND(tmp411, command_tmp411, - "[settemp|setbyte <offset> <value>] or [getbyte <offset>] or" - "[power <on|off>]. " - "Temps in Celsius.", - "Print tmp411 temp sensor status or set parameters."); -#endif - -int tmp411_set_power(enum tmp411_power_state power_on) -{ -#ifndef CONFIG_TEMP_SENSOR_POWER_GPIO - uint8_t shutdown = (power_on == TMP411_POWER_OFF) ? 1 : 0; - - return tmp411_shutdown(shutdown); -#else - gpio_set_level(CONFIG_TEMP_SENSOR_POWER_GPIO, power_on); - return EC_SUCCESS; -#endif -} - |