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Commit cd2fa534 authored by Vidyakumar Athota's avatar Vidyakumar Athota
Browse files

codecs: add on-demand supply support 



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

Change-Id: Iaf33ac40165832595c875e26179dc036b62b36f8
Signed-off-by: default avatarVidyakumar Athota <vathota@codeaurora.org>
parent b05cd67f

asoc/codecs/msm-cdc-supply.c

+101 −1
Original line number Diff line number Diff line 
/*

 * 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

asoc/codecs/msm-cdc-supply.h

+9 −1
Original line number Diff line number Diff line 
/* 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,