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Commit e07f3007 authored by Rajesh Bharathwaj's avatar Rajesh Bharathwaj
Browse files

max31760: add support for additional registers 



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

Change-Id: I91efd154e9490c4dc1ecc8f84890fc1ef1eaf307
Signed-off-by: default avatarRajesh Bharathwaj <rajeshbharathwaj@codeaurora.org>
parent bc4eb225

drivers/misc/max31760.c

+11 −4
Original line number Diff line number Diff line 
// 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);