diff options
Diffstat (limited to 'driver/temp_sensor/tmp112.c')
-rw-r--r-- | driver/temp_sensor/tmp112.c | 124 |
1 files changed, 0 insertions, 124 deletions
diff --git a/driver/temp_sensor/tmp112.c b/driver/temp_sensor/tmp112.c deleted file mode 100644 index 4da5c4e0e8..0000000000 --- a/driver/temp_sensor/tmp112.c +++ /dev/null @@ -1,124 +0,0 @@ -/* Copyright 2016 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. - */ - -/* TMP112 temperature sensor module for Chrome EC */ - -#include "common.h" -#include "console.h" -#include "tmp112.h" -#include "i2c.h" -#include "hooks.h" -#include "math_util.h" -#include "util.h" - -#define TMP112_RESOLUTION 12 -#define TMP112_SHIFT1 (16 - TMP112_RESOLUTION) -#define TMP112_SHIFT2 (TMP112_RESOLUTION - 8) - -#define CPRINTS(format, args...) cprints(CC_THERMAL, format, ## args) - -static int temp_mk_local[TMP112_COUNT]; - -static int raw_read16(int sensor, const int offset, int *data_ptr) -{ -#ifdef CONFIG_I2C_BUS_MAY_BE_UNPOWERED - /* - * Don't try to read if the port is unpowered - */ - if (!board_is_i2c_port_powered(tmp112_sensors[sensor].i2c_port)) - return EC_ERROR_NOT_POWERED; -#endif - return i2c_read16(tmp112_sensors[sensor].i2c_port, - tmp112_sensors[sensor].i2c_addr_flags, - offset, data_ptr); -} - -static int raw_write16(int sensor, const int offset, int data) -{ -#ifdef CONFIG_I2C_BUS_MAY_BE_UNPOWERED - /* - * Don't try to write if the port is unpowered - */ - if (!board_is_i2c_port_powered(tmp112_sensors[sensor].i2c_port)) - return EC_ERROR_NOT_POWERED; -#endif - return i2c_write16(tmp112_sensors[sensor].i2c_port, - tmp112_sensors[sensor].i2c_addr_flags, - offset, data); -} - -static int get_reg_temp(int sensor, int *temp_ptr) -{ - int rv; - int temp_raw = 0; - - rv = raw_read16(sensor, TMP112_REG_TEMP, &temp_raw); - if (rv) - return rv; - - *temp_ptr = (int)(int16_t)temp_raw; - return EC_SUCCESS; -} - -static inline int tmp112_reg_to_mk(int16_t reg) -{ - int temp_mc; - - temp_mc = (((reg >> TMP112_SHIFT1) * 1000) >> TMP112_SHIFT2); - - return MILLI_CELSIUS_TO_MILLI_KELVIN(temp_mc); -} - -int tmp112_get_val_k(int idx, int *temp_k_ptr) -{ - if (idx >= TMP112_COUNT) - return EC_ERROR_INVAL; - - *temp_k_ptr = MILLI_KELVIN_TO_KELVIN(temp_mk_local[idx]); - return EC_SUCCESS; -} - -int tmp112_get_val_mk(int idx, int *temp_mk_ptr) -{ - if (idx >= TMP112_COUNT) - return EC_ERROR_INVAL; - - *temp_mk_ptr = temp_mk_local[idx]; - return EC_SUCCESS; -} - -static void tmp112_poll(void) -{ - int s; - int temp_reg = 0; - - for (s = 0; s < TMP112_COUNT; s++) { - if (get_reg_temp(s, &temp_reg) == EC_SUCCESS) - temp_mk_local[s] = tmp112_reg_to_mk(temp_reg); - } -} -DECLARE_HOOK(HOOK_SECOND, tmp112_poll, HOOK_PRIO_TEMP_SENSOR); - -void tmp112_init(void) -{ - int tmp, s, rv; - int set_mask, clr_mask; - - /* 12 bit mode */ - set_mask = (3 << 5); - - /* not oneshot mode */ - clr_mask = BIT(7); - - for (s = 0; s < TMP112_COUNT; s++) { - rv = raw_read16(s, TMP112_REG_CONF, &tmp); - if (rv != EC_SUCCESS) { - CPRINTS("TMP112-%d: Failed to init (rv %d)", s, rv); - continue; - } - raw_write16(s, TMP112_REG_CONF, (tmp & ~clr_mask) | set_mask); - } -} -DECLARE_HOOK(HOOK_INIT, tmp112_init, HOOK_PRIO_DEFAULT); |