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https://github.com/Telecominfraproject/OpenCellular.git
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dfe22b2b1e
Until we solve the I2C hanging issue, we need a reliable way to read temperature. Add back LPC temperature read command that actually trigger a I2C read. Signed-off-by: Vic Yang <victoryang@google.com> BUG=chrome-os-partner:8452,chrome-os-partner:8495 TEST=none Change-Id: Icddd1fe3c1f09889bca633af19041a8aca582de9
40 lines
1.2 KiB
C
40 lines
1.2 KiB
C
/* Copyright (c) 2011 The Chromium OS Authors. All rights reserved.
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* Use of this source code is governed by a BSD-style license that can be
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* found in the LICENSE file.
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*/
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/* Temperature sensor module for Chrome EC */
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/* This LPC command only serves as a workaround to provide reliable temperature
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* reading method until we solve the I2C hanging issue. Remove this when
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* possible. */
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#include "console.h"
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#include "host_command.h"
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#include "temp_sensor.h"
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#include "temp_sensor_commands.h"
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#include "lpc_commands.h"
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#include "uart.h"
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#include "util.h"
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/*****************************************************************************/
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/* Host commands */
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enum lpc_status temp_sensor_command_get_readings(uint8_t *data)
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{
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struct lpc_params_temp_sensor_get_readings *p =
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(struct lpc_params_temp_sensor_get_readings *)data;
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struct lpc_response_temp_sensor_get_readings *r =
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(struct lpc_response_temp_sensor_get_readings *)data;
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int rv;
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rv = temp_sensor_read(p->temp_sensor_id);
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if (rv == -1)
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return EC_LPC_RESULT_ERROR;
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r->value = rv;
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return EC_LPC_RESULT_SUCCESS;
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}
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DECLARE_HOST_COMMAND(EC_LPC_COMMAND_TEMP_SENSOR_GET_READINGS,
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temp_sensor_command_get_readings);
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