diff options
author | Elmo_Lan <elmo_lan@compal.corp-partner.google.com> | 2018-01-12 03:45:06 -0500 |
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committer | chrome-bot <chrome-bot@chromium.org> | 2018-01-28 21:17:06 -0800 |
commit | e46d0fcbc8be50381cf9bf6cafc1f60cd7247ded (patch) | |
tree | da116453076718149d43370db3f3745f6b6378e2 /driver/temp_sensor | |
parent | 4e39404604cbe0336eff7e1d087aebdec58a2021 (diff) | |
download | chrome-ec-e46d0fcbc8be50381cf9bf6cafc1f60cd7247ded.tar.gz |
Nami: Update for ALS and temperture sensor
Implement ALS code and add a new thermal sensor
(Fintek, F75303)
BUG=b:71839392
BRANCH=none
TEST=Verify Nami can read ALS and thermal data via I2C by ec console.
Change-Id: I0f8fd486f62508bbca30a57f435b9f26621cf34b
Signed-off-by: Elmo_Lan <elmo_lan@compal.corp-partner.google.com>
Reviewed-on: https://chromium-review.googlesource.com/863350
Commit-Ready: Elmo Lan <elmo_lan@compal.corp-partner.google.com>
Tested-by: Elmo Lan <elmo_lan@compal.corp-partner.google.com>
Reviewed-by: Daisuke Nojiri <dnojiri@chromium.org>
Reviewed-by: Elmo Lan <elmo_lan@compal.corp-partner.google.com>
Diffstat (limited to 'driver/temp_sensor')
-rw-r--r-- | driver/temp_sensor/f75303.c | 63 | ||||
-rw-r--r-- | driver/temp_sensor/f75303.h | 33 |
2 files changed, 96 insertions, 0 deletions
diff --git a/driver/temp_sensor/f75303.c b/driver/temp_sensor/f75303.c new file mode 100644 index 0000000000..61d672a7bd --- /dev/null +++ b/driver/temp_sensor/f75303.c @@ -0,0 +1,63 @@ +/* Copyright 2018 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. + */ + +/* F75303 temperature sensor module for Chrome EC */ + +#include "common.h" +#include "f75303.h" +#include "i2c.h" +#include "hooks.h" +#include "util.h" + +static int temp_val_local; +static int temp_val_remote1; + +/** + * Read 8 bits register from temp sensor. + */ +static int raw_read8(const int offset, int *data_ptr) +{ + return i2c_read8(I2C_PORT_THERMAL, F75303_I2C_ADDR, offset, data_ptr); +} + +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 = temp_raw; + return EC_SUCCESS; +} + +int f75303_get_val(int idx, int *temp_ptr) +{ + switch (idx) { + case F75303_IDX_LOCAL: + *temp_ptr = temp_val_local; + break; + case F75303_IDX_REMOTE: + *temp_ptr = temp_val_remote1; + break; + default: + return EC_ERROR_UNKNOWN; + } + + return EC_SUCCESS; +} + +static void f75303_sensor_poll(void) +{ + get_temp(F75303_TEMP_LOCAL, &temp_val_local); + temp_val_local = C_TO_K(temp_val_local); + + get_temp(F75303_TEMP_REMOTE, &temp_val_remote1); + temp_val_remote1 = C_TO_K(temp_val_remote1); +} +DECLARE_HOOK(HOOK_SECOND, f75303_sensor_poll, HOOK_PRIO_TEMP_SENSOR); + diff --git a/driver/temp_sensor/f75303.h b/driver/temp_sensor/f75303.h new file mode 100644 index 0000000000..da08898301 --- /dev/null +++ b/driver/temp_sensor/f75303.h @@ -0,0 +1,33 @@ +/* Copyright 2018 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. + */ + +/* F75303 temperature sensor module for Chrome EC */ + +#ifndef __CROS_EC_F75303_H +#define __CROS_EC_F75303_H + +#define F75303_I2C_ADDR 0x9A /* 7-bit address is 0x4C */ + +enum f75303_index { + F75303_IDX_LOCAL = 0, + F75303_IDX_REMOTE, +}; + +/* F75303 register */ +#define F75303_TEMP_LOCAL 0x00 +#define F75303_TEMP_REMOTE 0x01 + +/** + * Get the last polled value of a sensor. + * + * @param idx Index to read. Idx indicates whether to read die + * temperature or external temperature. + * @param temp_ptr Destination for temperature in K. + * + * @return EC_SUCCESS if successful, non-zero if error. + */ +int f75303_get_val(int idx, int *temp_ptr); + +#endif /* __CROS_EC_F75303_H */ |