linux-stable/drivers/thermal/qcom/tsens-8996.c
Eduardo Valentin 032d405729 thermal: qcom: remove declare local symbols as static
Trivial: remove the following:
drivers/thermal/qcom/tsens-8916.c:103:24: warning: symbol 'ops_8916' was not declared. Should it be static?
drivers/thermal/qcom/tsens-8996.c:76:24: warning: symbol 'ops_8996' was not declared. Should it be static?
drivers/thermal/qcom/tsens-8974.c:235:24: warning: symbol 'ops_8974' was not declared. Should it be static?
drivers/thermal/qcom/tsens-8960.c:279:24: warning: symbol 'ops_8960' was not declared. Should it be static?

Cc: Zhang Rui <rui.zhang@intel.com>
Cc: Rajendra Nayak <rnayak@codeaurora.org>
Cc: linux-pm@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Eduardo Valentin <edubezval@gmail.com>
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
2016-09-27 14:02:16 +08:00

84 lines
2.1 KiB
C

/*
* Copyright (c) 2015, The Linux Foundation. All rights reserved.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 and
* only version 2 as published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
*/
#include <linux/platform_device.h>
#include <linux/regmap.h>
#include "tsens.h"
#define STATUS_OFFSET 0x10a0
#define LAST_TEMP_MASK 0xfff
#define STATUS_VALID_BIT BIT(21)
#define CODE_SIGN_BIT BIT(11)
static int get_temp_8996(struct tsens_device *tmdev, int id, int *temp)
{
struct tsens_sensor *s = &tmdev->sensor[id];
u32 code;
unsigned int sensor_addr;
int last_temp = 0, last_temp2 = 0, last_temp3 = 0, ret;
sensor_addr = STATUS_OFFSET + s->hw_id * 4;
ret = regmap_read(tmdev->map, sensor_addr, &code);
if (ret)
return ret;
last_temp = code & LAST_TEMP_MASK;
if (code & STATUS_VALID_BIT)
goto done;
/* Try a second time */
ret = regmap_read(tmdev->map, sensor_addr, &code);
if (ret)
return ret;
if (code & STATUS_VALID_BIT) {
last_temp = code & LAST_TEMP_MASK;
goto done;
} else {
last_temp2 = code & LAST_TEMP_MASK;
}
/* Try a third/last time */
ret = regmap_read(tmdev->map, sensor_addr, &code);
if (ret)
return ret;
if (code & STATUS_VALID_BIT) {
last_temp = code & LAST_TEMP_MASK;
goto done;
} else {
last_temp3 = code & LAST_TEMP_MASK;
}
if (last_temp == last_temp2)
last_temp = last_temp2;
else if (last_temp2 == last_temp3)
last_temp = last_temp3;
done:
/* Code sign bit is the sign extension for a negative value */
if (last_temp & CODE_SIGN_BIT)
last_temp |= ~CODE_SIGN_BIT;
/* Temperatures are in deciCelicius */
*temp = last_temp * 100;
return 0;
}
static const struct tsens_ops ops_8996 = {
.init = init_common,
.get_temp = get_temp_8996,
};
const struct tsens_data data_8996 = {
.num_sensors = 13,
.ops = &ops_8996,
};