/**
* 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);
}
static int sr_class3_disable(struct voltagedomain *voltdm, int is_volt_reset)
{
omap_vp_disable(voltdm);
sr_disable(voltdm);
if (is_volt_reset)
omap_voltage_reset(voltdm);
return 0;
}
/**
* sr_class1p5_disable() - disable for class 1p5
* @voltdm: voltage domain for the sr which needs disabling
* @volt_data: voltagedata to disable
* @is_volt_reset: reset the voltage?
*
* we dont do anything if the class 1p5 is being used. this is because we
* already disable sr at the end of calibration and no h/w loop is actually
* active when this is called.
*/
static int sr_class1p5_disable(struct voltagedomain *voltdm,
struct omap_volt_data *volt_data,
int is_volt_reset)
{
struct sr_class1p5_work_data *work_data;
if (IS_ERR_OR_NULL(voltdm) || IS_ERR_OR_NULL(volt_data)) {
pr_err("%s: bad parameters!\n", __func__);
return -EINVAL;
}
work_data = get_sr1p5_work(voltdm);
if (work_data->work_active) {
/* if volt reset and work is active, we dont allow this */
if (is_volt_reset)
return -EBUSY;
/* flag work is dead and remove the old work */
work_data->work_active = false;
cancel_delayed_work_sync(&work_data->work);
sr_notifier_control(voltdm, false);
omap_vp_disable(voltdm);
sr_disable(voltdm);
/* Release c-state constraint */
omap_pm_set_max_mpu_wakeup_lat(&work_data->qos_request, -1);
pr_debug("%s - %s: release c-state\n", __func__, voltdm->name);
}
/* if already calibrated, nothin special to do here.. */
if (volt_data->volt_calibrated)
return 0;
if (is_volt_reset)
omap_voltage_reset(voltdm);
return 0;
}
