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max31760: add support for additional registers

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Adding support for register writes and values to change the duty
cycle of the fan.

Change-Id: I91efd154e9490c4dc1ecc8f84890fc1ef1eaf307
Signed-off-by: Rajesh Bharathwaj <rajeshbharathwaj@codeaurora.org>
This commit is contained in:
Rajesh Bharathwaj 2021-04-27 11:54:03 -07:00
parent bc4eb225fb
commit e07f30078f
1 changed files with 11 additions and 4 deletions
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15
drivers/misc/max31760.c
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@ -1,7 +1,7 @@
// SPDX-License-Identifier: GPL-2.0-only
/*
* Copyright (c) 2020, The Linux Foundation. All rights reserved.
* Copyright (c) 2020-2021, The Linux Foundation. All rights reserved.
*/
#include <linux/device.h>
@ -121,7 +121,7 @@ static ssize_t fan_show(struct device *dev, struct device_attribute *attr,
static ssize_t fan_store(struct device *dev, struct device_attribute *attr,
const char *buf, size_t count)
{
long val;
long val, val1;
struct max31760 *pdata;
pdata = dev_get_drvdata(dev);
@ -131,8 +131,15 @@ static ssize_t fan_store(struct device *dev, struct device_attribute *attr,
}
kstrtol(buf, 0, &val);
pr_debug("%s, count:%d val:%lx, buf:%s\n",
__func__, count, val, buf);
val1 = val >> 8;
pr_debug("%s, count:%d val:%lx, val1:%lx, buf:%s\n",
__func__, count, val, val1, buf);
if (val1 == 0x50) {
val1 = val & 0xFF;
pr_debug("%s, reg value val1:%lx\n", __func__, val1);
max31760_i2c_reg_set(pdata, 0x50, val1);
return count;
}
if (val == 0xff) {
turn_gpio(pdata, false);