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driver: thermal: bcl_pmic5: Register vbat only when enabled

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Vbat in BCL peripheral can be disabled by default depending on the PMIC
configuration. In those cases, registering vbat sensor will read 0 Volt
always.

Before registering the vbat sensor, check if the vbat ADC measurement is
enabled in the hardware. If not, skip the registration of vbat sensor.

Change-Id: Ic937201349a505825615a412bdbbfb7348b30689
Signed-off-by: Ram Chandrasekar <rkumbako@codeaurora.org>
This commit is contained in:
Ram Chandrasekar 2020-02-28 09:28:21 -08:00
commit fe7d188ad1
1 changed files with 8 additions and 1 deletions
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9
drivers/thermal/qcom/bcl_pmic5.c
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@ -1,6 +1,6 @@
// SPDX-License-Identifier: GPL-2.0-only
/*
* Copyright (c) 2018-2019, The Linux Foundation. All rights reserved.
* Copyright (c) 2018-2020, The Linux Foundation. All rights reserved.
*/
#define pr_fmt(fmt) "%s:%s " fmt, KBUILD_MODNAME, __func__
@ -34,6 +34,7 @@
#define BCL_VBAT_ADC_LOW 0x48
#define BCL_VBAT_COMP_LOW 0x49
#define BCL_VBAT_COMP_TLOW 0x4A
#define BCL_VBAT_CONV_REQ 0x72
#define BCL_IRQ_L0 0x1
#define BCL_IRQ_L1 0x2
@ -503,11 +504,17 @@ static void bcl_vbat_init(struct platform_device *pdev,
enum bcl_dev_type type, struct bcl_device *bcl_perph)
{
struct bcl_peripheral_data *vbat = &bcl_perph->param[type];
unsigned int val = 0;
int ret;
mutex_init(&vbat->state_trans_lock);
vbat->dev = bcl_perph;
vbat->irq_num = 0;
vbat->irq_enabled = false;
vbat->tz_dev = NULL;
ret = bcl_read_register(bcl_perph, BCL_VBAT_CONV_REQ, &val);
if (ret || !val)
return;
vbat->tz_dev = thermal_zone_device_register("vbat", 3, 0, vbat,
&vbat_tzd_ops, &vbat_tzp, 0, 0);
if (IS_ERR(vbat->tz_dev)) {