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Merge "regulator: rpmh: Add support for resending RPMh requests after Deepsleep"

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qctecmdr 2024-05-03 01:22:13 -07:00 committed by Gerrit - the friendly Code Review server
commit 74b4305257
1 changed files with 65 additions and 0 deletions
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65
drivers/regulator/rpmh-regulator.c
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@ -14,6 +14,7 @@
#include <linux/platform_device.h>
#include <linux/slab.h>
#include <linux/string.h>
#include <linux/suspend.h>
#include <linux/regulator/debug-regulator.h>
#include <linux/regulator/driver.h>
#include <linux/regulator/machine.h>
@ -938,6 +939,25 @@ rpmh_regulator_send_aggregate_requests(struct rpmh_vreg *vreg)
return 0;
}
static int rpmh_vreg_send_ds_requests(struct rpmh_aggr_vreg *aggr_vreg)
{
int rc;
mutex_lock(&aggr_vreg->lock);
aggr_vreg->aggr_req_active.valid = 0;
aggr_vreg->aggr_req_sleep.valid = 0;
rc = rpmh_regulator_send_aggregate_requests(&aggr_vreg->vreg[0]);
if (rc)
aggr_vreg_err(aggr_vreg, "error while re-sending request, rc=%d\n",
rc);
mutex_unlock(&aggr_vreg->lock);
return rc;
}
/**
* rpmh_regulator_set_reg() - set a register value within the request for an
* RPMh regulator and return the previous value
@ -2201,11 +2221,56 @@ static int rpmh_regulator_probe(struct platform_device *pdev)
return rc;
}
static int rpmh_vreg_freeze(struct device *dev)
{
pr_debug("Entering hibernation via Rpmh_regulator freeze\n");
return 0;
}
static int rpmh_vreg_restore(struct device *dev)
{
struct rpmh_aggr_vreg *aggr_vreg = dev_get_drvdata(dev);
pr_debug("Resuming from hibernation via Rpmh_regulator restore\n");
rpmh_vreg_send_ds_requests(aggr_vreg);
return 0;
}
static int rpmh_vreg_suspend(struct device *dev)
{
#ifdef CONFIG_DEEPSLEEP
if (pm_suspend_via_firmware())
pr_debug("Entering Deepsleep via Rpmh_regulator suspend\n");
#endif
return 0;
}
static int rpmh_vreg_resume(struct device *dev)
{
#ifdef CONFIG_DEEPSLEEP
if (pm_suspend_via_firmware()) {
pr_debug("Resuming Deepsleep via Rpmh_regulator resume\n");
rpmh_vreg_restore(dev);
}
#endif
return 0;
}
static const struct dev_pm_ops rpmh_vreg_pm_ops = {
.suspend = rpmh_vreg_suspend,
.resume = rpmh_vreg_resume,
.freeze = rpmh_vreg_freeze,
.restore = rpmh_vreg_restore,
};
static struct platform_driver rpmh_regulator_driver = {
.driver = {
.name = "qcom,rpmh-regulator",
.of_match_table = rpmh_regulator_match_table,
.sync_state = regulator_proxy_consumer_sync_state,
.pm = &rpmh_vreg_pm_ops,
},
.probe = rpmh_regulator_probe,
};