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asoc: codecs: Update LPM voting support in codec supplies

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For power saving during RBSC, need to vote for minimum
or zero current on load for respective regulator to
enter LPM mode. Add required support from audio WCD/WSA
to vote accordingly during suspend/resume.

Change-Id: I578195b84ba18a0b69dde3b93a3f6461efa85f7f
Signed-off-by: Laxminath Kasam <lkasam@codeaurora.org>
This commit is contained in:
Laxminath Kasam
2020-04-29 17:57:00 +05:30
parent 127718f3d9
commit ec8a0b507c
6 changed files with 182 additions and 7 deletions
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70
asoc/codecs/msm-cdc-supply.c
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@@ -60,9 +60,22 @@ static int msm_cdc_dt_parse_vreg_info(struct device *dev,
}
cdc_vreg->optimum_uA = prop_val;
dev_info(dev, "%s: %s: vol=[%d %d]uV, curr=[%d]uA, ond %d\n",
/* Parse supply - LPM or NOM mode(default NOM) */
snprintf(prop_name, CODEC_DT_MAX_PROP_SIZE, "qcom,%s-lpm-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->lpm_supported = 0;
rc = 0;
} else {
cdc_vreg->lpm_supported = prop_val;
}
dev_info(dev, "%s: %s: vol=[%d %d]uV, curr=[%d]uA, ond %d lpm %d\n",
__func__, cdc_vreg->name, cdc_vreg->min_uV, cdc_vreg->max_uV,
cdc_vreg->optimum_uA, cdc_vreg->ondemand);
cdc_vreg->optimum_uA, cdc_vreg->ondemand,
cdc_vreg->lpm_supported);
done:
return rc;
@@ -260,6 +273,59 @@ int msm_cdc_enable_ondemand_supply(struct device *dev,
}
EXPORT_SYMBOL(msm_cdc_enable_ondemand_supply);
/*
* msm_cdc_set_supplies_lpm_mode:
* Update load for given supply string
*
* @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
* @min_max: Apply optimum or 0 current
*
* Return error code if set current fail
*/
int msm_cdc_set_supplies_lpm_mode(struct device *dev,
struct regulator_bulk_data *supplies,
struct cdc_regulator *cdc_vreg,
int num_supplies,
bool flag)
{
int rc = 0, i;
if (!supplies) {
pr_err("%s: supplies 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].lpm_supported) {
rc = regulator_set_load(
supplies[i].consumer,
flag ? 0 : cdc_vreg[i].optimum_uA);
if (rc)
dev_err(dev,
"%s: failed to set supply %s to %s, err:%d\n",
__func__, supplies[i].supply,
flag ? "LPM" : "NOM",
rc);
else
dev_dbg(dev, "%s: regulator %s load set to %s\n",
__func__, supplies[i].supply,
flag ? "LPM" : "NOM");
}
}
return rc;
}
EXPORT_SYMBOL(msm_cdc_set_supplies_lpm_mode);
/*
* msm_cdc_disable_static_supplies:
* Disable codec static supplies