/** * 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; }