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codecs: add on-demand supply support

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Add new APIs to enable/disable on-demand codec supplies
to msm-cdc-supply driver.

Change-Id: Iaf33ac40165832595c875e26179dc036b62b36f8
Signed-off-by: Vidyakumar Athota <vathota@codeaurora.org>
This commit is contained in:
Vidyakumar Athota 2018-01-17 17:42:46 -08:00
parent b05cd67f29
commit cd2fa5348e
2 changed files with 110 additions and 2 deletions
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102
asoc/codecs/msm-cdc-supply.c
View file

@ -1,5 +1,5 @@
/*
* Copyright (c) 2016-2017, The Linux Foundation. All rights reserved.
* Copyright (c) 2016-2018, 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
@ -126,6 +126,106 @@ static int msm_cdc_check_supply_param(struct device *dev,
return 0;
}
/*
* msm_cdc_disable_ondemand_supply:
* Disable codec ondemand supply
*
* @dev: pointer to codec device
* @supplies: pointer to regulator bulk data
* @cdc_vreg: pointer to platform regulator data
* @num_supplies: number of supplies
* @supply_name: Ondemand supply name to be enabled
*
* Return error code if supply disable is failed
*/
int msm_cdc_disable_ondemand_supply(struct device *dev,
struct regulator_bulk_data *supplies,
struct cdc_regulator *cdc_vreg,
int num_supplies,
char *supply_name)
{
int rc, i;
if ((!supply_name) || (!supplies)) {
pr_err("%s: either dev or supplies or cdc_vreg is NULL\n",
__func__);
return -EINVAL;
}
/* input parameter validation */
rc = msm_cdc_check_supply_param(dev, cdc_vreg, num_supplies);
if (rc)
return rc;
for (i = 0; i < num_supplies; i++) {
if (cdc_vreg[i].ondemand &&
!strcmp(cdc_vreg[i].name, supply_name)) {
rc = regulator_disable(supplies[i].consumer);
if (rc)
dev_err(dev, "%s: failed to disable supply %s, err:%d\n",
__func__, supplies[i].supply, rc);
break;
}
}
if (i == num_supplies) {
dev_err(dev, "%s: not able to find supply %s\n",
__func__, supply_name);
rc = -EINVAL;
}
return rc;
}
EXPORT_SYMBOL(msm_cdc_disable_ondemand_supply);
/*
* msm_cdc_enable_ondemand_supply:
* Enable codec ondemand supply
*
* @dev: pointer to codec device
* @supplies: pointer to regulator bulk data
* @cdc_vreg: pointer to platform regulator data
* @num_supplies: number of supplies
* @supply_name: Ondemand supply name to be enabled
*
* Return error code if supply enable is failed
*/
int msm_cdc_enable_ondemand_supply(struct device *dev,
struct regulator_bulk_data *supplies,
struct cdc_regulator *cdc_vreg,
int num_supplies,
char *supply_name)
{
int rc, i;
if ((!supply_name) || (!supplies)) {
pr_err("%s: either dev or supplies or cdc_vreg is NULL\n",
__func__);
return -EINVAL;
}
/* input parameter validation */
rc = msm_cdc_check_supply_param(dev, cdc_vreg, num_supplies);
if (rc)
return rc;
for (i = 0; i < num_supplies; i++) {
if (cdc_vreg[i].ondemand &&
!strcmp(cdc_vreg[i].name, supply_name)) {
rc = regulator_enable(supplies[i].consumer);
if (rc)
dev_err(dev, "%s: failed to enable supply %s, rc: %d\n",
__func__, supplies[i].supply, rc);
break;
}
}
if (i == num_supplies) {
dev_err(dev, "%s: not able to find supply %s\n",
__func__, supply_name);
rc = -EINVAL;
}
return rc;
}
EXPORT_SYMBOL(msm_cdc_enable_ondemand_supply);
/*
* msm_cdc_disable_static_supplies:
* Disable codec static supplies

10
asoc/codecs/msm-cdc-supply.h
View file

@ -1,4 +1,4 @@
/* Copyright (c) 2016, The Linux Foundation. All rights reserved.
/* Copyright (c) 2016, 2018 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
@ -29,6 +29,14 @@ struct cdc_regulator {
extern int msm_cdc_get_power_supplies(struct device *dev,
struct cdc_regulator **cdc_vreg,
int *total_num_supplies);
extern int msm_cdc_disable_ondemand_supply(struct device *dev,
struct regulator_bulk_data *supplies,
struct cdc_regulator *cdc_vreg,
int num_supplies, char *supply_name);
extern int msm_cdc_enable_ondemand_supply(struct device *dev,
struct regulator_bulk_data *supplies,
struct cdc_regulator *cdc_vreg,
int num_supplies, char *supply_name);
extern int msm_cdc_disable_static_supplies(struct device *dev,
struct regulator_bulk_data *supplies,
struct cdc_regulator *cdc_vreg,