/**
* sr_class1p5_reset_calib() - reset all calibrated voltages
* @voltdm: configure for which voltage domain
* @reset: reset voltage before we recal?
* @recal: should I recalibrate my current opp?
*
* if we call this, it means either periodic calibration trigger was
* fired(either from sysfs or other mechanisms) or we have disabled class 1p5,
* meaning we cant trust the calib voltages anymore, it is better to use
* nominal in the system
*/
static void sr_class1p5_reset_calib(struct voltagedomain *voltdm, bool reset,
bool recal)
{
struct sr_class1p5_work_data *work_data;
/* I dont need to go further if sr is not present */
if (!is_sr_enabled(voltdm))
return;
work_data = get_sr1p5_work(voltdm);
if (work_data->work_active)
sr_class1p5_disable(voltdm, work_data->vdata, 0);
omap_voltage_calib_reset(voltdm);
/*
* I should now reset the voltages to my nominal to be safe
*/
if (reset)
omap_voltage_reset(voltdm);
/*
* I should fire a recalibration for current opp if needed
* Note: i have just reset my calibrated voltages, and if
* i call sr_enable equivalent, I will cause a recalibration
* loop, even though the function is called sr_enable.. we
* are in class 1.5 ;)
*/
if (reset && recal)
sr_class1p5_enable(voltdm, work_data->vdata);
}
/**
* sr_class1p5_deinit() - class 1p5 deinitialization
* @voltdm: voltage domain for which to do this.
* @voltdm_cdata: voltage domain specific private class data
* allocated by class init with work item data
* freed by deinit.
* @class_priv_data: class private data for deinitialiation (unused)
*
* currently only resets the calibrated voltage forcing DVFS voltages
* to be used in the system
*
* NOTE: Appropriate locks must be held by calling path to ensure mutual
* exclusivity
*/
static int sr_class1p5_deinit(struct voltagedomain *voltdm,
void **voltdm_cdata, void *class_priv_data)
{
struct sr_class1p5_work_data *work_data;
if (IS_ERR_OR_NULL(voltdm) || IS_ERR_OR_NULL(voltdm_cdata)) {
pr_err("%s: bad parameters!\n", __func__);
return -EINVAL;
}
if (IS_ERR_OR_NULL(*voltdm_cdata)) {
pr_err("%s: ooopps.. class not initialized for %s! bug??\n",
__func__, voltdm->name);
return -EINVAL;
}
work_data = (struct sr_class1p5_work_data *) *voltdm_cdata;
/*
* we dont have SR periodic calib anymore.. so reset calibs
* we are already protected by appropriate locks, so no lock needed
* here.
*/
if (work_data->work_active)
sr_class1p5_disable(voltdm, work_data, work_data->vdata, 0);
/* Ensure worker canceled. */
cancel_delayed_work_sync(&work_data->work);
omap_voltage_calib_reset(voltdm);
voltdm_reset(voltdm);
pm_qos_remove_request(&work_data->qos);
*voltdm_cdata = NULL;
kfree(work_data);
return 0;
}
