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asoc: codec: Unvote wcd939x vdd-px supply

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When codec goes into suspend, disable vdd-px which
will cause an unvote in PM.

Change-Id: Ia9f958d67fc57dbf3932733797bce7b0eb742363
Signed-off-by: Eric Rosas <quic_erosas@quicinc.com>
This commit is contained in:
Eric Rosas
2023-07-13 22:25:48 -07:00
parent 26ab6d4948
commit af6068fd31
3 changed files with 180 additions and 6 deletions
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129
asoc/codecs/msm-cdc-supply.c
View File

@@ -1,6 +1,7 @@
// SPDX-License-Identifier: GPL-2.0-only
/*
* Copyright (c) 2016-2020, The Linux Foundation. All rights reserved.
* Copyright (c) 2023, Qualcomm Innovation Center, Inc. All rights reserved.
*/
#include <linux/kernel.h>
@@ -72,10 +73,22 @@ static int msm_cdc_dt_parse_vreg_info(struct device *dev,
cdc_vreg->lpm_supported = prop_val;
}
dev_info(dev, "%s: %s: vol=[%d %d]uV, curr=[%d]uA, ond %d lpm %d\n",
/* Parse supply - retention mode */
snprintf(prop_name, CODEC_DT_MAX_PROP_SIZE, "qcom,%s-rem-supported", name);
rc = of_property_read_u32(dev->of_node, prop_name, &prop_val);
if (rc) {
dev_dbg(dev, "%s: Looking up %s property in node %s failed",
__func__, prop_name, dev->of_node->full_name);
cdc_vreg->rem_supported = 0;
rc = 0;
} else {
cdc_vreg->rem_supported = prop_val;
}
dev_info(dev, "%s: %s: vol=[%d %d]uV, curr=[%d]uA, ond %d lpm %d rem %d\n",
__func__, cdc_vreg->name, cdc_vreg->min_uV, cdc_vreg->max_uV,
cdc_vreg->optimum_uA, cdc_vreg->ondemand,
cdc_vreg->lpm_supported);
cdc_vreg->lpm_supported, cdc_vreg->rem_supported);
done:
return rc;
@@ -173,6 +186,94 @@ bool msm_cdc_is_ondemand_supply(struct device *dev,
}
EXPORT_SYMBOL(msm_cdc_is_ondemand_supply);
/*
* msm_cdc_supply_supports_retention_mode:
* On certain hardware configurations, This means that the
* PM will disable the supply and remove its power vote
* if the PM enters into a suspended state.
*
* return if supply supports retention mode or not
*
* @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: supply name to be checked
*
* Return true/false
*/
bool msm_cdc_supply_supports_retention_mode(struct device *dev,
struct regulator_bulk_data *supplies,
struct cdc_regulator *cdc_vreg,
int num_supplies, char *supply_name)
{
bool rc = false;
int ret, i;
if ((!supply_name) || (!supplies)) {
pr_err_ratelimited("%s: either dev or supplies or cdc_vreg is NULL\n",
__func__);
return rc;
}
/* input parameter validation */
ret = msm_cdc_check_supply_param(dev, cdc_vreg, num_supplies);
if (ret)
return rc;
for (i = 0; i < num_supplies; i++) {
if (cdc_vreg[i].rem_supported &&
!strcmp(cdc_vreg[i].name, supply_name))
return true;
}
return rc;
}
EXPORT_SYMBOL(msm_cdc_supply_supports_retention_mode);
/*
* msm_cdc_check_supply_vote:
*
* return true if supply has voted for regulator enable
*
* @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: supply name to be checked
*
* Return true/false
*/
bool msm_cdc_check_supply_vote(struct device *dev,
struct regulator_bulk_data *supplies,
struct cdc_regulator *cdc_vreg,
int num_supplies,
char *supply_name)
{
bool rc = false;
int ret, i;
if ((!supply_name) || (!supplies)) {
pr_err_ratelimited("%s: either dev or supplies or cdc_vreg is NULL\n",
__func__);
return rc;
}
/* input parameter validation */
ret = msm_cdc_check_supply_param(dev, cdc_vreg, num_supplies);
if (ret)
return rc;
for (i = 0; i < num_supplies; i++) {
if (strcmp(cdc_vreg[i].name, supply_name) != 0)
continue;
return cdc_vreg[i].vote;
}
return rc;
}
EXPORT_SYMBOL(msm_cdc_check_supply_vote);
/*
* msm_cdc_set_supply_min_voltage:
* Set min supply voltage for particular supply
@@ -257,6 +358,7 @@ int msm_cdc_disable_ondemand_supply(struct device *dev,
dev_err_ratelimited(dev,
"%s: failed to disable supply %s, err:%d\n",
__func__, supplies[i].supply, rc);
cdc_vreg[i].vote = false;
break;
}
}
@@ -307,6 +409,7 @@ int msm_cdc_enable_ondemand_supply(struct device *dev,
if (rc)
dev_err_ratelimited(dev, "%s: failed to enable supply %s, rc: %d\n",
__func__, supplies[i].supply, rc);
cdc_vreg[i].vote = true;
break;
}
}
@@ -409,9 +512,11 @@ int msm_cdc_disable_static_supplies(struct device *dev,
if (rc)
dev_err(dev, "%s: failed to disable supply %s, err:%d\n",
__func__, supplies[i].supply, rc);
else
else {
cdc_vreg[i].vote = false;
dev_dbg(dev, "%s: disabled regulator %s\n",
__func__, supplies[i].supply);
}
}
return rc;
@@ -500,11 +605,21 @@ int msm_cdc_enable_static_supplies(struct device *dev,
__func__, supplies[i].supply, rc);
break;
}
cdc_vreg[i].vote = true;
}
while (rc && i--)
if (!cdc_vreg[i].ondemand)
regulator_disable(supplies[i].consumer);
if (rc) {
while (i--) {
if (cdc_vreg[i].ondemand)
continue;
if (regulator_disable(supplies[i].consumer) == 0)
cdc_vreg[i].vote = false;
else
dev_err(dev, "%s: failed to disable supply %s during unwind\n",
__func__, supplies[i].supply);
}
}
return rc;
}
@@ -594,6 +709,8 @@ int msm_cdc_init_supplies_v2(struct device *dev,
if (cdc_vreg[i].ondemand && vote_regulator_on_demand)
continue;
cdc_vreg[i].regulator = vsup[i].consumer;
rc = regulator_set_voltage(vsup[i].consumer,
cdc_vreg[i].min_uV,
cdc_vreg[i].max_uV);

46
asoc/codecs/wcd939x/wcd939x.c
View File

@@ -12,6 +12,7 @@
#include <linux/kernel.h>
#include <linux/component.h>
#include <linux/stringify.h>
#include <linux/regulator/consumer.h>
#include <sound/soc.h>
#include <sound/tlv.h>
#include <soc/soundwire.h>
@@ -5316,6 +5317,18 @@ static int wcd939x_probe(struct platform_device *pdev)
return ret;
}
if (msm_cdc_is_ondemand_supply(wcd939x->dev, wcd939x->supplies,
pdata->regulator, pdata->num_supplies, "cdc-vdd-px")) {
ret = msm_cdc_enable_ondemand_supply(wcd939x->dev,
wcd939x->supplies, pdata->regulator,
pdata->num_supplies, "cdc-vdd-px");
if (ret) {
dev_err(dev, "%s: vdd px supply enable failed!\n",
__func__);
return ret;
}
}
ret = wcd939x_parse_port_mapping(dev, "qcom,rx_swr_ch_map",
CODEC_RX);
ret |= wcd939x_parse_port_mapping(dev, "qcom,tx_swr_ch_map",
@@ -5409,12 +5422,30 @@ static int wcd939x_suspend(struct device *dev)
pdata->num_supplies,
true);
set_bit(WCD_SUPPLIES_LPM_MODE, &wcd939x->status_mask);
if (msm_cdc_is_ondemand_supply(wcd939x->dev, wcd939x->supplies, pdata->regulator,
pdata->num_supplies, "cdc-vdd-px")) {
if (msm_cdc_supply_supports_retention_mode(wcd939x->dev, wcd939x->supplies,
pdata->regulator, pdata->num_supplies, "cdc-vdd-px") &&
msm_cdc_check_supply_vote(wcd939x->dev, wcd939x->supplies,
pdata->regulator, pdata->num_supplies, "cdc-vdd-px")) {
ret = msm_cdc_disable_ondemand_supply(wcd939x->dev,
wcd939x->supplies, pdata->regulator,
pdata->num_supplies, "cdc-vdd-px");
if (ret) {
dev_dbg(dev, "%s: vdd px supply suspend failed!\n",
__func__);
}
}
}
}
return 0;
}
static int wcd939x_resume(struct device *dev)
{
int ret = 0;
struct wcd939x_priv *wcd939x = NULL;
struct wcd939x_pdata *pdata = NULL;
@@ -5432,6 +5463,21 @@ static int wcd939x_resume(struct device *dev)
return -EINVAL;
}
if (msm_cdc_is_ondemand_supply(wcd939x->dev, wcd939x->supplies, pdata->regulator,
pdata->num_supplies, "cdc-vdd-px")) {
if (msm_cdc_supply_supports_retention_mode(wcd939x->dev, wcd939x->supplies,
pdata->regulator, pdata->num_supplies, "cdc-vdd-px") &&
!msm_cdc_check_supply_vote(wcd939x->dev, wcd939x->supplies,
pdata->regulator, pdata->num_supplies, "cdc-vdd-px")) {
ret = msm_cdc_enable_ondemand_supply(wcd939x->dev, wcd939x->supplies,
pdata->regulator, pdata->num_supplies, "cdc-vdd-px");
if (ret) {
dev_dbg(dev, "%s: vdd px supply resume failed!\n",
__func__);
}
}
}
if (test_bit(WCD_SUPPLIES_LPM_MODE, &wcd939x->status_mask)) {
msm_cdc_set_supplies_lpm_mode(wcd939x->dev,
wcd939x->supplies,

11
include/asoc/msm-cdc-supply.h
View File

@@ -1,5 +1,6 @@
/* SPDX-License-Identifier: GPL-2.0-only */
/* Copyright (c) 2016, 2018-2020 The Linux Foundation. All rights reserved.
* Copyright (c) 2023, Qualcomm Innovation Center, Inc. All rights reserved.
*/
#ifndef __CODEC_POWER_SUPPLY_H__
@@ -16,6 +17,8 @@ struct cdc_regulator {
int optimum_uA;
bool ondemand;
bool lpm_supported;
bool rem_supported;
bool vote;
struct regulator *regulator;
};
@@ -32,6 +35,14 @@ extern bool msm_cdc_is_ondemand_supply(struct device *dev,
struct regulator_bulk_data *supplies,
struct cdc_regulator *cdc_vreg,
int num_supplies, char *supply_name);
extern bool msm_cdc_supply_supports_retention_mode(struct device *dev,
struct regulator_bulk_data *supplies,
struct cdc_regulator *cdc_vreg,
int num_supplies, char *supply_name);
extern bool msm_cdc_check_supply_vote(struct device *dev,
struct regulator_bulk_data *supplies,
struct cdc_regulator *cdc_vreg,
int num_supplies, char *supply_name);
extern int msm_cdc_disable_ondemand_supply(struct device *dev,
struct regulator_bulk_data *supplies,
struct cdc_regulator *cdc_vreg,