Lines Matching +full:switching +full:- +full:freq
1 // SPDX-License-Identifier: GPL-2.0-only
5 * Copyright (C) 2009-2010 Texas Instruments Incorporated.
25 * The root of the list of all opp-tables. All opp_table structures branch off
38 list_for_each_entry(opp_dev, &opp_table->dev_list, node) in _find_opp_dev()
39 if (opp_dev->dev == dev) in _find_opp_dev()
51 mutex_lock(&opp_table->lock); in _find_opp_table_unlocked()
53 mutex_unlock(&opp_table->lock); in _find_opp_table_unlocked()
62 return ERR_PTR(-ENODEV); in _find_opp_table_unlocked()
66 * _find_opp_table() - find opp_table struct using device pointer
71 * Return: pointer to 'struct opp_table' if found, otherwise -ENODEV or
72 * -EINVAL based on type of error.
82 return ERR_PTR(-EINVAL); in _find_opp_table()
93 * dev_pm_opp_get_voltage() - Gets the voltage corresponding to an opp
108 return opp->supplies[0].u_volt; in dev_pm_opp_get_voltage()
113 * dev_pm_opp_get_freq() - Gets the frequency corresponding to an available opp
126 return opp->rate; in dev_pm_opp_get_freq()
131 * dev_pm_opp_get_level() - Gets the level corresponding to an available opp
139 if (IS_ERR_OR_NULL(opp) || !opp->available) { in dev_pm_opp_get_level()
144 return opp->level; in dev_pm_opp_get_level()
149 * dev_pm_opp_is_turbo() - Returns if opp is turbo OPP or not
160 if (IS_ERR_OR_NULL(opp) || !opp->available) { in dev_pm_opp_is_turbo()
165 return opp->turbo; in dev_pm_opp_is_turbo()
170 * dev_pm_opp_get_max_clock_latency() - Get max clock latency in nanoseconds
184 clock_latency_ns = opp_table->clock_latency_ns_max; in dev_pm_opp_get_max_clock_latency()
193 * dev_pm_opp_get_max_volt_latency() - Get max voltage latency in nanoseconds
215 if (!opp_table->regulators) in dev_pm_opp_get_max_volt_latency()
218 count = opp_table->regulator_count; in dev_pm_opp_get_max_volt_latency()
224 mutex_lock(&opp_table->lock); in dev_pm_opp_get_max_volt_latency()
230 list_for_each_entry(opp, &opp_table->opp_list, node) { in dev_pm_opp_get_max_volt_latency()
231 if (!opp->available) in dev_pm_opp_get_max_volt_latency()
234 if (opp->supplies[i].u_volt_min < uV[i].min) in dev_pm_opp_get_max_volt_latency()
235 uV[i].min = opp->supplies[i].u_volt_min; in dev_pm_opp_get_max_volt_latency()
236 if (opp->supplies[i].u_volt_max > uV[i].max) in dev_pm_opp_get_max_volt_latency()
237 uV[i].max = opp->supplies[i].u_volt_max; in dev_pm_opp_get_max_volt_latency()
241 mutex_unlock(&opp_table->lock); in dev_pm_opp_get_max_volt_latency()
248 reg = opp_table->regulators[i]; in dev_pm_opp_get_max_volt_latency()
263 * dev_pm_opp_get_max_transition_latency() - Get max transition latency in
278 * dev_pm_opp_get_suspend_opp_freq() - Get frequency of suspend opp in Hz
287 unsigned long freq = 0; in dev_pm_opp_get_suspend_opp_freq() local
293 if (opp_table->suspend_opp && opp_table->suspend_opp->available) in dev_pm_opp_get_suspend_opp_freq()
294 freq = dev_pm_opp_get_freq(opp_table->suspend_opp); in dev_pm_opp_get_suspend_opp_freq()
298 return freq; in dev_pm_opp_get_suspend_opp_freq()
307 mutex_lock(&opp_table->lock); in _get_opp_count()
309 list_for_each_entry(opp, &opp_table->opp_list, node) { in _get_opp_count()
310 if (opp->available) in _get_opp_count()
314 mutex_unlock(&opp_table->lock); in _get_opp_count()
320 * dev_pm_opp_get_opp_count() - Get number of opps available in the opp table
347 * dev_pm_opp_find_freq_exact() - search for an exact frequency
349 * @freq: frequency to search for
350 * @available: true/false - match for available opp
370 unsigned long freq, in dev_pm_opp_find_freq_exact() argument
374 struct dev_pm_opp *temp_opp, *opp = ERR_PTR(-ERANGE); in dev_pm_opp_find_freq_exact()
384 mutex_lock(&opp_table->lock); in dev_pm_opp_find_freq_exact()
386 list_for_each_entry(temp_opp, &opp_table->opp_list, node) { in dev_pm_opp_find_freq_exact()
387 if (temp_opp->available == available && in dev_pm_opp_find_freq_exact()
388 temp_opp->rate == freq) { in dev_pm_opp_find_freq_exact()
397 mutex_unlock(&opp_table->lock); in dev_pm_opp_find_freq_exact()
405 * dev_pm_opp_find_level_exact() - search for an exact level
423 struct dev_pm_opp *temp_opp, *opp = ERR_PTR(-ERANGE); in dev_pm_opp_find_level_exact()
433 mutex_lock(&opp_table->lock); in dev_pm_opp_find_level_exact()
435 list_for_each_entry(temp_opp, &opp_table->opp_list, node) { in dev_pm_opp_find_level_exact()
436 if (temp_opp->level == level) { in dev_pm_opp_find_level_exact()
445 mutex_unlock(&opp_table->lock); in dev_pm_opp_find_level_exact()
453 unsigned long *freq) in _find_freq_ceil() argument
455 struct dev_pm_opp *temp_opp, *opp = ERR_PTR(-ERANGE); in _find_freq_ceil()
457 mutex_lock(&opp_table->lock); in _find_freq_ceil()
459 list_for_each_entry(temp_opp, &opp_table->opp_list, node) { in _find_freq_ceil()
460 if (temp_opp->available && temp_opp->rate >= *freq) { in _find_freq_ceil()
462 *freq = opp->rate; in _find_freq_ceil()
470 mutex_unlock(&opp_table->lock); in _find_freq_ceil()
476 * dev_pm_opp_find_freq_ceil() - Search for an rounded ceil freq
478 * @freq: Start frequency
480 * Search for the matching ceil *available* OPP from a starting freq
483 * Return: matching *opp and refreshes *freq accordingly, else returns
494 unsigned long *freq) in dev_pm_opp_find_freq_ceil() argument
499 if (!dev || !freq) { in dev_pm_opp_find_freq_ceil()
500 dev_err(dev, "%s: Invalid argument freq=%p\n", __func__, freq); in dev_pm_opp_find_freq_ceil()
501 return ERR_PTR(-EINVAL); in dev_pm_opp_find_freq_ceil()
508 opp = _find_freq_ceil(opp_table, freq); in dev_pm_opp_find_freq_ceil()
517 * dev_pm_opp_find_freq_floor() - Search for a rounded floor freq
519 * @freq: Start frequency
521 * Search for the matching floor *available* OPP from a starting freq
524 * Return: matching *opp and refreshes *freq accordingly, else returns
535 unsigned long *freq) in dev_pm_opp_find_freq_floor() argument
538 struct dev_pm_opp *temp_opp, *opp = ERR_PTR(-ERANGE); in dev_pm_opp_find_freq_floor()
540 if (!dev || !freq) { in dev_pm_opp_find_freq_floor()
541 dev_err(dev, "%s: Invalid argument freq=%p\n", __func__, freq); in dev_pm_opp_find_freq_floor()
542 return ERR_PTR(-EINVAL); in dev_pm_opp_find_freq_floor()
549 mutex_lock(&opp_table->lock); in dev_pm_opp_find_freq_floor()
551 list_for_each_entry(temp_opp, &opp_table->opp_list, node) { in dev_pm_opp_find_freq_floor()
552 if (temp_opp->available) { in dev_pm_opp_find_freq_floor()
554 if (temp_opp->rate > *freq) in dev_pm_opp_find_freq_floor()
564 mutex_unlock(&opp_table->lock); in dev_pm_opp_find_freq_floor()
568 *freq = opp->rate; in dev_pm_opp_find_freq_floor()
575 * dev_pm_opp_find_freq_ceil_by_volt() - Find OPP with highest frequency for
595 struct dev_pm_opp *temp_opp, *opp = ERR_PTR(-ERANGE); in dev_pm_opp_find_freq_ceil_by_volt()
600 return ERR_PTR(-EINVAL); in dev_pm_opp_find_freq_ceil_by_volt()
607 mutex_lock(&opp_table->lock); in dev_pm_opp_find_freq_ceil_by_volt()
609 list_for_each_entry(temp_opp, &opp_table->opp_list, node) { in dev_pm_opp_find_freq_ceil_by_volt()
610 if (temp_opp->available) { in dev_pm_opp_find_freq_ceil_by_volt()
611 if (temp_opp->supplies[0].u_volt > u_volt) in dev_pm_opp_find_freq_ceil_by_volt()
621 mutex_unlock(&opp_table->lock); in dev_pm_opp_find_freq_ceil_by_volt()
641 supply->u_volt_min, supply->u_volt, supply->u_volt_max); in _set_opp_voltage()
643 ret = regulator_set_voltage_triplet(reg, supply->u_volt_min, in _set_opp_voltage()
644 supply->u_volt, supply->u_volt_max); in _set_opp_voltage()
647 __func__, supply->u_volt_min, supply->u_volt, in _set_opp_voltage()
648 supply->u_volt_max, ret); in _set_opp_voltage()
654 unsigned long freq) in _generic_set_opp_clk_only() argument
658 ret = clk_set_rate(clk, freq); in _generic_set_opp_clk_only()
670 unsigned long freq, in _generic_set_opp_regulator() argument
674 struct regulator *reg = opp_table->regulators[0]; in _generic_set_opp_regulator()
678 if (WARN_ON(opp_table->regulator_count > 1)) { in _generic_set_opp_regulator()
680 return -EINVAL; in _generic_set_opp_regulator()
684 if (freq >= old_freq) { in _generic_set_opp_regulator()
691 ret = _generic_set_opp_clk_only(dev, opp_table->clk, freq); in _generic_set_opp_regulator()
696 if (freq < old_freq) { in _generic_set_opp_regulator()
704 * some boot-enabled regulators. in _generic_set_opp_regulator()
706 if (unlikely(!opp_table->enabled)) { in _generic_set_opp_regulator()
715 if (_generic_set_opp_clk_only(dev, opp_table->clk, old_freq)) in _generic_set_opp_regulator()
716 dev_err(dev, "%s: failed to restore old-freq (%lu Hz)\n", in _generic_set_opp_regulator()
732 if (!opp_table->paths) in _set_opp_bw()
735 for (i = 0; i < opp_table->path_count; i++) { in _set_opp_bw()
740 avg = opp->bandwidth[i].avg; in _set_opp_bw()
741 peak = opp->bandwidth[i].peak; in _set_opp_bw()
743 ret = icc_set_bw(opp_table->paths[i], avg, peak); in _set_opp_bw()
756 unsigned long freq, in _set_opp_custom() argument
763 data = opp_table->set_opp_data; in _set_opp_custom()
764 data->regulators = opp_table->regulators; in _set_opp_custom()
765 data->regulator_count = opp_table->regulator_count; in _set_opp_custom()
766 data->clk = opp_table->clk; in _set_opp_custom()
767 data->dev = dev; in _set_opp_custom()
769 data->old_opp.rate = old_freq; in _set_opp_custom()
770 size = sizeof(*old_supply) * opp_table->regulator_count; in _set_opp_custom()
772 memset(data->old_opp.supplies, 0, size); in _set_opp_custom()
774 memcpy(data->old_opp.supplies, old_supply, size); in _set_opp_custom()
776 data->new_opp.rate = freq; in _set_opp_custom()
777 memcpy(data->new_opp.supplies, new_supply, size); in _set_opp_custom()
779 return opp_table->set_opp(data); in _set_opp_custom()
785 unsigned int pstate = likely(opp) ? opp->required_opps[i]->pstate : 0; in _set_required_opp()
805 struct opp_table **required_opp_tables = opp_table->required_opp_tables; in _set_required_opps()
806 struct device **genpd_virt_devs = opp_table->genpd_virt_devs; in _set_required_opps()
822 mutex_lock(&opp_table->genpd_virt_dev_lock); in _set_required_opps()
826 for (i = 0; i < opp_table->required_opp_count; i++) { in _set_required_opps()
832 for (i = opp_table->required_opp_count - 1; i >= 0; i--) { in _set_required_opps()
839 mutex_unlock(&opp_table->genpd_virt_dev_lock); in _set_required_opps()
845 * dev_pm_opp_set_bw() - sets bandwidth levels corresponding to an opp
879 if (!opp_table->enabled) in _opp_set_rate_zero()
894 if (opp_table->regulators) in _opp_set_rate_zero()
895 regulator_disable(opp_table->regulators[0]); in _opp_set_rate_zero()
899 opp_table->enabled = false; in _opp_set_rate_zero()
904 * dev_pm_opp_set_rate() - Configure new OPP based on frequency
908 * This configures the power-supplies to the levels specified by the OPP
917 unsigned long freq, old_freq, temp_freq; in dev_pm_opp_set_rate() local
933 clk = opp_table->clk; in dev_pm_opp_set_rate()
941 freq = clk_round_rate(clk, target_freq); in dev_pm_opp_set_rate()
942 if ((long)freq <= 0) in dev_pm_opp_set_rate()
943 freq = target_freq; in dev_pm_opp_set_rate()
948 if (opp_table->enabled && old_freq == freq) { in dev_pm_opp_set_rate()
950 __func__, freq); in dev_pm_opp_set_rate()
963 ret = _generic_set_opp_clk_only(dev, clk, freq); in dev_pm_opp_set_rate()
970 dev_err(dev, "%s: failed to find current OPP for freq %lu (%ld)\n", in dev_pm_opp_set_rate()
974 temp_freq = freq; in dev_pm_opp_set_rate()
978 dev_err(dev, "%s: failed to find OPP for freq %lu (%d)\n", in dev_pm_opp_set_rate()
979 __func__, freq, ret); in dev_pm_opp_set_rate()
983 dev_dbg(dev, "%s: switching OPP: %lu Hz --> %lu Hz\n", __func__, in dev_pm_opp_set_rate()
984 old_freq, freq); in dev_pm_opp_set_rate()
987 if (freq >= old_freq) { in dev_pm_opp_set_rate()
993 if (opp_table->set_opp) { in dev_pm_opp_set_rate()
994 ret = _set_opp_custom(opp_table, dev, old_freq, freq, in dev_pm_opp_set_rate()
995 IS_ERR(old_opp) ? NULL : old_opp->supplies, in dev_pm_opp_set_rate()
996 opp->supplies); in dev_pm_opp_set_rate()
997 } else if (opp_table->regulators) { in dev_pm_opp_set_rate()
998 ret = _generic_set_opp_regulator(opp_table, dev, old_freq, freq, in dev_pm_opp_set_rate()
999 IS_ERR(old_opp) ? NULL : old_opp->supplies, in dev_pm_opp_set_rate()
1000 opp->supplies); in dev_pm_opp_set_rate()
1003 ret = _generic_set_opp_clk_only(dev, clk, freq); in dev_pm_opp_set_rate()
1007 if (!ret && freq < old_freq) { in dev_pm_opp_set_rate()
1016 opp_table->enabled = true; in dev_pm_opp_set_rate()
1030 /* OPP-dev Helpers */
1035 list_del(&opp_dev->node); in _remove_opp_dev()
1048 /* Initialize opp-dev */ in _add_opp_dev_unlocked()
1049 opp_dev->dev = dev; in _add_opp_dev_unlocked()
1051 list_add(&opp_dev->node, &opp_table->dev_list); in _add_opp_dev_unlocked()
1064 mutex_lock(&opp_table->lock); in _add_opp_dev()
1066 mutex_unlock(&opp_table->lock); in _add_opp_dev()
1083 return ERR_PTR(-ENOMEM); in _allocate_opp_table()
1085 mutex_init(&opp_table->lock); in _allocate_opp_table()
1086 mutex_init(&opp_table->genpd_virt_dev_lock); in _allocate_opp_table()
1087 INIT_LIST_HEAD(&opp_table->dev_list); in _allocate_opp_table()
1090 opp_table->regulator_count = -1; in _allocate_opp_table()
1094 ret = -ENOMEM; in _allocate_opp_table()
1101 opp_table->clk = clk_get(dev, NULL); in _allocate_opp_table()
1102 if (IS_ERR(opp_table->clk)) { in _allocate_opp_table()
1103 ret = PTR_ERR(opp_table->clk); in _allocate_opp_table()
1104 if (ret == -EPROBE_DEFER) in _allocate_opp_table()
1113 if (ret == -EPROBE_DEFER) in _allocate_opp_table()
1120 BLOCKING_INIT_NOTIFIER_HEAD(&opp_table->head); in _allocate_opp_table()
1121 INIT_LIST_HEAD(&opp_table->opp_list); in _allocate_opp_table()
1122 kref_init(&opp_table->kref); in _allocate_opp_table()
1125 list_add(&opp_table->node, &opp_tables); in _allocate_opp_table()
1135 kref_get(&opp_table->kref); in _get_opp_table_kref()
1153 opp_table = ERR_PTR(-ENOMEM); in _opp_get_opp_table()
1185 list_del(&opp_table->node); in _opp_table_kref_release()
1191 if (!IS_ERR(opp_table->clk)) in _opp_table_kref_release()
1192 clk_put(opp_table->clk); in _opp_table_kref_release()
1194 if (opp_table->paths) { in _opp_table_kref_release()
1195 for (i = 0; i < opp_table->path_count; i++) in _opp_table_kref_release()
1196 icc_put(opp_table->paths[i]); in _opp_table_kref_release()
1197 kfree(opp_table->paths); in _opp_table_kref_release()
1200 WARN_ON(!list_empty(&opp_table->opp_list)); in _opp_table_kref_release()
1202 list_for_each_entry_safe(opp_dev, temp, &opp_table->dev_list, node) { in _opp_table_kref_release()
1207 if (opp_table->genpd_performance_state) in _opp_table_kref_release()
1208 dev_pm_genpd_set_performance_state((struct device *)(opp_dev->dev), 0); in _opp_table_kref_release()
1213 mutex_destroy(&opp_table->genpd_virt_dev_lock); in _opp_table_kref_release()
1214 mutex_destroy(&opp_table->lock); in _opp_table_kref_release()
1220 kref_put_mutex(&opp_table->kref, _opp_table_kref_release, in dev_pm_opp_put_opp_table()
1237 blocking_notifier_call_chain(&opp_table->head, OPP_EVENT_REMOVE, opp); in _opp_kref_release()
1240 list_del(&opp->node); in _opp_kref_release()
1247 struct opp_table *opp_table = opp->opp_table; in _opp_kref_release_unlocked()
1255 struct opp_table *opp_table = opp->opp_table; in _opp_kref_release_locked()
1258 mutex_unlock(&opp_table->lock); in _opp_kref_release_locked()
1263 kref_get(&opp->kref); in dev_pm_opp_get()
1268 kref_put_mutex(&opp->kref, _opp_kref_release_locked, in dev_pm_opp_put()
1269 &opp->opp_table->lock); in dev_pm_opp_put()
1275 kref_put(&opp->kref, _opp_kref_release_unlocked); in dev_pm_opp_put_unlocked()
1279 * dev_pm_opp_remove() - Remove an OPP from OPP table
1281 * @freq: OPP to remove with matching 'freq'
1285 void dev_pm_opp_remove(struct device *dev, unsigned long freq) in dev_pm_opp_remove() argument
1295 mutex_lock(&opp_table->lock); in dev_pm_opp_remove()
1297 list_for_each_entry(opp, &opp_table->opp_list, node) { in dev_pm_opp_remove()
1298 if (opp->rate == freq) { in dev_pm_opp_remove()
1304 mutex_unlock(&opp_table->lock); in dev_pm_opp_remove()
1312 dev_warn(dev, "%s: Couldn't find OPP with freq: %lu\n", in dev_pm_opp_remove()
1313 __func__, freq); in dev_pm_opp_remove()
1326 mutex_lock(&opp_table->lock); in _opp_remove_all_static()
1328 if (!opp_table->parsed_static_opps) { in _opp_remove_all_static()
1333 if (--opp_table->parsed_static_opps) in _opp_remove_all_static()
1336 list_for_each_entry_safe(opp, tmp, &opp_table->opp_list, node) { in _opp_remove_all_static()
1337 if (!opp->dynamic) in _opp_remove_all_static()
1342 mutex_unlock(&opp_table->lock); in _opp_remove_all_static()
1348 * dev_pm_opp_remove_all_dynamic() - Remove all dynamically created OPPs
1363 mutex_lock(&opp_table->lock); in dev_pm_opp_remove_all_dynamic()
1364 list_for_each_entry_safe(opp, temp, &opp_table->opp_list, node) { in dev_pm_opp_remove_all_dynamic()
1365 if (opp->dynamic) { in dev_pm_opp_remove_all_dynamic()
1370 mutex_unlock(&opp_table->lock); in dev_pm_opp_remove_all_dynamic()
1373 while (count--) in dev_pm_opp_remove_all_dynamic()
1387 supply_count = table->regulator_count > 0 ? table->regulator_count : 1; in _opp_allocate()
1388 supply_size = sizeof(*opp->supplies) * supply_count; in _opp_allocate()
1389 icc_size = sizeof(*opp->bandwidth) * table->path_count; in _opp_allocate()
1398 opp->supplies = (struct dev_pm_opp_supply *)(opp + 1); in _opp_allocate()
1400 opp->bandwidth = (struct dev_pm_opp_icc_bw *)(opp->supplies + supply_count); in _opp_allocate()
1401 INIT_LIST_HEAD(&opp->node); in _opp_allocate()
1412 if (!opp_table->regulators) in _opp_supported_by_regulators()
1415 for (i = 0; i < opp_table->regulator_count; i++) { in _opp_supported_by_regulators()
1416 reg = opp_table->regulators[i]; in _opp_supported_by_regulators()
1419 opp->supplies[i].u_volt_min, in _opp_supported_by_regulators()
1420 opp->supplies[i].u_volt_max)) { in _opp_supported_by_regulators()
1422 __func__, opp->supplies[i].u_volt_min, in _opp_supported_by_regulators()
1423 opp->supplies[i].u_volt_max); in _opp_supported_by_regulators()
1433 if (opp1->rate != opp2->rate) in _opp_compare_key()
1434 return opp1->rate < opp2->rate ? -1 : 1; in _opp_compare_key()
1435 if (opp1->bandwidth && opp2->bandwidth && in _opp_compare_key()
1436 opp1->bandwidth[0].peak != opp2->bandwidth[0].peak) in _opp_compare_key()
1437 return opp1->bandwidth[0].peak < opp2->bandwidth[0].peak ? -1 : 1; in _opp_compare_key()
1438 if (opp1->level != opp2->level) in _opp_compare_key()
1439 return opp1->level < opp2->level ? -1 : 1; in _opp_compare_key()
1454 * Need to use &opp_table->opp_list in the condition part of the 'for' in _opp_is_duplicate()
1458 list_for_each_entry(opp, &opp_table->opp_list, node) { in _opp_is_duplicate()
1461 *head = &opp->node; in _opp_is_duplicate()
1469 …dev_warn(dev, "%s: duplicate OPPs detected. Existing: freq: %lu, volt: %lu, enabled: %d. New: freq… in _opp_is_duplicate()
1470 __func__, opp->rate, opp->supplies[0].u_volt, in _opp_is_duplicate()
1471 opp->available, new_opp->rate, in _opp_is_duplicate()
1472 new_opp->supplies[0].u_volt, new_opp->available); in _opp_is_duplicate()
1475 return opp->available && in _opp_is_duplicate()
1476 new_opp->supplies[0].u_volt == opp->supplies[0].u_volt ? -EBUSY : -EEXIST; in _opp_is_duplicate()
1485 * -EBUSY: For OPP with same freq/volt and is available. The callers of
1486 * _opp_add() must return 0 if they receive -EBUSY from it. This is to make
1489 * -EEXIST: For OPP with same freq but different volt or is unavailable. This
1498 mutex_lock(&opp_table->lock); in _opp_add()
1499 head = &opp_table->opp_list; in _opp_add()
1504 mutex_unlock(&opp_table->lock); in _opp_add()
1509 list_add(&new_opp->node, head); in _opp_add()
1510 mutex_unlock(&opp_table->lock); in _opp_add()
1512 new_opp->opp_table = opp_table; in _opp_add()
1513 kref_init(&new_opp->kref); in _opp_add()
1518 new_opp->available = false; in _opp_add()
1520 __func__, new_opp->rate); in _opp_add()
1527 * _opp_add_v1() - Allocate a OPP based on v1 bindings.
1530 * @freq: Frequency in Hz for this OPP
1543 * Duplicate OPPs (both freq and volt are same) and opp->available
1544 * -EEXIST Freq are same and volt are different OR
1545 * Duplicate OPPs (both freq and volt are same) and !opp->available
1546 * -ENOMEM Memory allocation failure
1549 unsigned long freq, long u_volt, bool dynamic) in _opp_add_v1() argument
1557 return -ENOMEM; in _opp_add_v1()
1560 new_opp->rate = freq; in _opp_add_v1()
1561 tol = u_volt * opp_table->voltage_tolerance_v1 / 100; in _opp_add_v1()
1562 new_opp->supplies[0].u_volt = u_volt; in _opp_add_v1()
1563 new_opp->supplies[0].u_volt_min = u_volt - tol; in _opp_add_v1()
1564 new_opp->supplies[0].u_volt_max = u_volt + tol; in _opp_add_v1()
1565 new_opp->available = true; in _opp_add_v1()
1566 new_opp->dynamic = dynamic; in _opp_add_v1()
1571 if (ret == -EBUSY) in _opp_add_v1()
1580 blocking_notifier_call_chain(&opp_table->head, OPP_EVENT_ADD, new_opp); in _opp_add_v1()
1590 * dev_pm_opp_set_supported_hw() - Set supported platforms
1591 * @dev: Device for which supported-hw has to be set.
1597 * OPPs, which are available for those versions, based on its 'opp-supported-hw'
1610 WARN_ON(!list_empty(&opp_table->opp_list)); in dev_pm_opp_set_supported_hw()
1613 if (opp_table->supported_hw) in dev_pm_opp_set_supported_hw()
1616 opp_table->supported_hw = kmemdup(versions, count * sizeof(*versions), in dev_pm_opp_set_supported_hw()
1618 if (!opp_table->supported_hw) { in dev_pm_opp_set_supported_hw()
1620 return ERR_PTR(-ENOMEM); in dev_pm_opp_set_supported_hw()
1623 opp_table->supported_hw_count = count; in dev_pm_opp_set_supported_hw()
1630 * dev_pm_opp_put_supported_hw() - Releases resources blocked for supported hw
1640 WARN_ON(!list_empty(&opp_table->opp_list)); in dev_pm_opp_put_supported_hw()
1642 kfree(opp_table->supported_hw); in dev_pm_opp_put_supported_hw()
1643 opp_table->supported_hw = NULL; in dev_pm_opp_put_supported_hw()
1644 opp_table->supported_hw_count = 0; in dev_pm_opp_put_supported_hw()
1651 * dev_pm_opp_set_prop_name() - Set prop-extn name
1652 * @dev: Device for which the prop-name has to be set.
1657 * which the extension will apply are opp-microvolt and opp-microamp. OPP core
1658 * should postfix the property name with -<name> while looking for them.
1669 WARN_ON(!list_empty(&opp_table->opp_list)); in dev_pm_opp_set_prop_name()
1672 if (opp_table->prop_name) in dev_pm_opp_set_prop_name()
1675 opp_table->prop_name = kstrdup(name, GFP_KERNEL); in dev_pm_opp_set_prop_name()
1676 if (!opp_table->prop_name) { in dev_pm_opp_set_prop_name()
1678 return ERR_PTR(-ENOMEM); in dev_pm_opp_set_prop_name()
1686 * dev_pm_opp_put_prop_name() - Releases resources blocked for prop-name
1696 WARN_ON(!list_empty(&opp_table->opp_list)); in dev_pm_opp_put_prop_name()
1698 kfree(opp_table->prop_name); in dev_pm_opp_put_prop_name()
1699 opp_table->prop_name = NULL; in dev_pm_opp_put_prop_name()
1708 int len, count = opp_table->regulator_count; in _allocate_set_opp_data()
1710 if (WARN_ON(!opp_table->regulators)) in _allocate_set_opp_data()
1711 return -EINVAL; in _allocate_set_opp_data()
1721 return -ENOMEM; in _allocate_set_opp_data()
1723 data->old_opp.supplies = (void *)(data + 1); in _allocate_set_opp_data()
1724 data->new_opp.supplies = data->old_opp.supplies + count; in _allocate_set_opp_data()
1726 opp_table->set_opp_data = data; in _allocate_set_opp_data()
1733 kfree(opp_table->set_opp_data); in _free_set_opp_data()
1734 opp_table->set_opp_data = NULL; in _free_set_opp_data()
1738 * dev_pm_opp_set_regulators() - Set regulator names for the device
1743 * In order to support OPP switching, OPP layer needs to know the name of the
1762 if (WARN_ON(!list_empty(&opp_table->opp_list))) { in dev_pm_opp_set_regulators()
1763 ret = -EBUSY; in dev_pm_opp_set_regulators()
1768 if (opp_table->regulators) in dev_pm_opp_set_regulators()
1771 opp_table->regulators = kmalloc_array(count, in dev_pm_opp_set_regulators()
1772 sizeof(*opp_table->regulators), in dev_pm_opp_set_regulators()
1774 if (!opp_table->regulators) { in dev_pm_opp_set_regulators()
1775 ret = -ENOMEM; in dev_pm_opp_set_regulators()
1783 if (ret != -EPROBE_DEFER) in dev_pm_opp_set_regulators()
1789 opp_table->regulators[i] = reg; in dev_pm_opp_set_regulators()
1792 opp_table->regulator_count = count; in dev_pm_opp_set_regulators()
1803 regulator_put(opp_table->regulators[--i]); in dev_pm_opp_set_regulators()
1805 kfree(opp_table->regulators); in dev_pm_opp_set_regulators()
1806 opp_table->regulators = NULL; in dev_pm_opp_set_regulators()
1807 opp_table->regulator_count = -1; in dev_pm_opp_set_regulators()
1816 * dev_pm_opp_put_regulators() - Releases resources blocked for regulator
1823 if (!opp_table->regulators) in dev_pm_opp_put_regulators()
1827 WARN_ON(!list_empty(&opp_table->opp_list)); in dev_pm_opp_put_regulators()
1829 if (opp_table->enabled) { in dev_pm_opp_put_regulators()
1830 for (i = opp_table->regulator_count - 1; i >= 0; i--) in dev_pm_opp_put_regulators()
1831 regulator_disable(opp_table->regulators[i]); in dev_pm_opp_put_regulators()
1834 for (i = opp_table->regulator_count - 1; i >= 0; i--) in dev_pm_opp_put_regulators()
1835 regulator_put(opp_table->regulators[i]); in dev_pm_opp_put_regulators()
1839 kfree(opp_table->regulators); in dev_pm_opp_put_regulators()
1840 opp_table->regulators = NULL; in dev_pm_opp_put_regulators()
1841 opp_table->regulator_count = -1; in dev_pm_opp_put_regulators()
1849 * dev_pm_opp_set_clkname() - Set clk name for the device
1853 * In order to support OPP switching, OPP layer needs to get pointer to the
1855 * by passing connection-id as NULL), but for a device with multiple clocks
1870 if (WARN_ON(!list_empty(&opp_table->opp_list))) { in dev_pm_opp_set_clkname()
1871 ret = -EBUSY; in dev_pm_opp_set_clkname()
1876 if (!IS_ERR(opp_table->clk)) in dev_pm_opp_set_clkname()
1877 clk_put(opp_table->clk); in dev_pm_opp_set_clkname()
1880 opp_table->clk = clk_get(dev, name); in dev_pm_opp_set_clkname()
1881 if (IS_ERR(opp_table->clk)) { in dev_pm_opp_set_clkname()
1882 ret = PTR_ERR(opp_table->clk); in dev_pm_opp_set_clkname()
1883 if (ret != -EPROBE_DEFER) { in dev_pm_opp_set_clkname()
1900 * dev_pm_opp_put_clkname() - Releases resources blocked for clk.
1906 WARN_ON(!list_empty(&opp_table->opp_list)); in dev_pm_opp_put_clkname()
1908 clk_put(opp_table->clk); in dev_pm_opp_put_clkname()
1909 opp_table->clk = ERR_PTR(-EINVAL); in dev_pm_opp_put_clkname()
1916 * dev_pm_opp_register_set_opp_helper() - Register custom set OPP helper
1931 return ERR_PTR(-EINVAL); in dev_pm_opp_register_set_opp_helper()
1938 if (WARN_ON(!list_empty(&opp_table->opp_list))) { in dev_pm_opp_register_set_opp_helper()
1940 return ERR_PTR(-EBUSY); in dev_pm_opp_register_set_opp_helper()
1944 if (!opp_table->set_opp) in dev_pm_opp_register_set_opp_helper()
1945 opp_table->set_opp = set_opp; in dev_pm_opp_register_set_opp_helper()
1952 * dev_pm_opp_unregister_set_opp_helper() - Releases resources blocked for
1961 WARN_ON(!list_empty(&opp_table->opp_list)); in dev_pm_opp_unregister_set_opp_helper()
1963 opp_table->set_opp = NULL; in dev_pm_opp_unregister_set_opp_helper()
1972 if (!opp_table->genpd_virt_devs) in _opp_detach_genpd()
1975 for (index = 0; index < opp_table->required_opp_count; index++) { in _opp_detach_genpd()
1976 if (!opp_table->genpd_virt_devs[index]) in _opp_detach_genpd()
1979 dev_pm_domain_detach(opp_table->genpd_virt_devs[index], false); in _opp_detach_genpd()
1980 opp_table->genpd_virt_devs[index] = NULL; in _opp_detach_genpd()
1983 kfree(opp_table->genpd_virt_devs); in _opp_detach_genpd()
1984 opp_table->genpd_virt_devs = NULL; in _opp_detach_genpd()
1988 * dev_pm_opp_attach_genpd - Attach genpd(s) for the device and save virtual device pointer
1994 * virtual genpd devices, which are created for each consumer device - genpd
2007 * "required-opps" are added in DT.
2014 int index = 0, ret = -EINVAL; in dev_pm_opp_attach_genpd()
2021 if (opp_table->genpd_virt_devs) in dev_pm_opp_attach_genpd()
2026 * required-opps fail for dev. We should retry this after genpd's OPP in dev_pm_opp_attach_genpd()
2029 if (!opp_table->required_opp_count) { in dev_pm_opp_attach_genpd()
2030 ret = -EPROBE_DEFER; in dev_pm_opp_attach_genpd()
2034 mutex_lock(&opp_table->genpd_virt_dev_lock); in dev_pm_opp_attach_genpd()
2036 opp_table->genpd_virt_devs = kcalloc(opp_table->required_opp_count, in dev_pm_opp_attach_genpd()
2037 sizeof(*opp_table->genpd_virt_devs), in dev_pm_opp_attach_genpd()
2039 if (!opp_table->genpd_virt_devs) in dev_pm_opp_attach_genpd()
2043 if (index >= opp_table->required_opp_count) { in dev_pm_opp_attach_genpd()
2044 dev_err(dev, "Index can't be greater than required-opp-count - 1, %s (%d : %d)\n", in dev_pm_opp_attach_genpd()
2045 *name, opp_table->required_opp_count, index); in dev_pm_opp_attach_genpd()
2056 opp_table->genpd_virt_devs[index] = virt_dev; in dev_pm_opp_attach_genpd()
2062 *virt_devs = opp_table->genpd_virt_devs; in dev_pm_opp_attach_genpd()
2063 mutex_unlock(&opp_table->genpd_virt_dev_lock); in dev_pm_opp_attach_genpd()
2070 mutex_unlock(&opp_table->genpd_virt_dev_lock); in dev_pm_opp_attach_genpd()
2080 * dev_pm_opp_detach_genpd() - Detach genpd(s) from the device.
2092 mutex_lock(&opp_table->genpd_virt_dev_lock); in dev_pm_opp_detach_genpd()
2094 mutex_unlock(&opp_table->genpd_virt_dev_lock); in dev_pm_opp_detach_genpd()
2101 * dev_pm_opp_xlate_performance_state() - Find required OPP's pstate for src_table.
2107 * "required-opps" property of the OPP (present in @src_table) which has
2118 int dest_pstate = -EINVAL; in dev_pm_opp_xlate_performance_state()
2125 * and so none of them have the "required-opps" property set. Return the in dev_pm_opp_xlate_performance_state()
2128 if (!src_table->required_opp_count) in dev_pm_opp_xlate_performance_state()
2131 for (i = 0; i < src_table->required_opp_count; i++) { in dev_pm_opp_xlate_performance_state()
2132 if (src_table->required_opp_tables[i]->np == dst_table->np) in dev_pm_opp_xlate_performance_state()
2136 if (unlikely(i == src_table->required_opp_count)) { in dev_pm_opp_xlate_performance_state()
2139 return -EINVAL; in dev_pm_opp_xlate_performance_state()
2142 mutex_lock(&src_table->lock); in dev_pm_opp_xlate_performance_state()
2144 list_for_each_entry(opp, &src_table->opp_list, node) { in dev_pm_opp_xlate_performance_state()
2145 if (opp->pstate == pstate) { in dev_pm_opp_xlate_performance_state()
2146 dest_pstate = opp->required_opps[i]->pstate; in dev_pm_opp_xlate_performance_state()
2155 mutex_unlock(&src_table->lock); in dev_pm_opp_xlate_performance_state()
2161 * dev_pm_opp_add() - Add an OPP table from a table definitions
2163 * @freq: Frequency in Hz for this OPP
2172 * Duplicate OPPs (both freq and volt are same) and opp->available
2173 * -EEXIST Freq are same and volt are different OR
2174 * Duplicate OPPs (both freq and volt are same) and !opp->available
2175 * -ENOMEM Memory allocation failure
2177 int dev_pm_opp_add(struct device *dev, unsigned long freq, unsigned long u_volt) in dev_pm_opp_add() argument
2187 opp_table->regulator_count = 1; in dev_pm_opp_add()
2189 ret = _opp_add_v1(opp_table, dev, freq, u_volt, true); in dev_pm_opp_add()
2198 * _opp_set_availability() - helper to set the availability of an opp
2200 * @freq: OPP frequency to modify availability
2206 * Return: -EINVAL for bad pointers, -ENOMEM if no memory available for the
2210 static int _opp_set_availability(struct device *dev, unsigned long freq, in _opp_set_availability() argument
2214 struct dev_pm_opp *tmp_opp, *opp = ERR_PTR(-ENODEV); in _opp_set_availability()
2225 mutex_lock(&opp_table->lock); in _opp_set_availability()
2228 list_for_each_entry(tmp_opp, &opp_table->opp_list, node) { in _opp_set_availability()
2229 if (tmp_opp->rate == freq) { in _opp_set_availability()
2241 if (opp->available == availability_req) in _opp_set_availability()
2244 opp->available = availability_req; in _opp_set_availability()
2247 mutex_unlock(&opp_table->lock); in _opp_set_availability()
2251 blocking_notifier_call_chain(&opp_table->head, OPP_EVENT_ENABLE, in _opp_set_availability()
2254 blocking_notifier_call_chain(&opp_table->head, in _opp_set_availability()
2261 mutex_unlock(&opp_table->lock); in _opp_set_availability()
2268 * dev_pm_opp_adjust_voltage() - helper to change the voltage of an OPP
2270 * @freq: OPP frequency to adjust voltage of
2275 * Return: -EINVAL for bad pointers, -ENOMEM if no memory available for the
2279 int dev_pm_opp_adjust_voltage(struct device *dev, unsigned long freq, in dev_pm_opp_adjust_voltage() argument
2285 struct dev_pm_opp *tmp_opp, *opp = ERR_PTR(-ENODEV); in dev_pm_opp_adjust_voltage()
2296 mutex_lock(&opp_table->lock); in dev_pm_opp_adjust_voltage()
2299 list_for_each_entry(tmp_opp, &opp_table->opp_list, node) { in dev_pm_opp_adjust_voltage()
2300 if (tmp_opp->rate == freq) { in dev_pm_opp_adjust_voltage()
2312 if (opp->supplies->u_volt == u_volt) in dev_pm_opp_adjust_voltage()
2315 opp->supplies->u_volt = u_volt; in dev_pm_opp_adjust_voltage()
2316 opp->supplies->u_volt_min = u_volt_min; in dev_pm_opp_adjust_voltage()
2317 opp->supplies->u_volt_max = u_volt_max; in dev_pm_opp_adjust_voltage()
2320 mutex_unlock(&opp_table->lock); in dev_pm_opp_adjust_voltage()
2323 blocking_notifier_call_chain(&opp_table->head, OPP_EVENT_ADJUST_VOLTAGE, in dev_pm_opp_adjust_voltage()
2330 mutex_unlock(&opp_table->lock); in dev_pm_opp_adjust_voltage()
2338 * dev_pm_opp_enable() - Enable a specific OPP
2340 * @freq: OPP frequency to enable
2346 * Return: -EINVAL for bad pointers, -ENOMEM if no memory available for the
2350 int dev_pm_opp_enable(struct device *dev, unsigned long freq) in dev_pm_opp_enable() argument
2352 return _opp_set_availability(dev, freq, true); in dev_pm_opp_enable()
2357 * dev_pm_opp_disable() - Disable a specific OPP
2359 * @freq: OPP frequency to disable
2366 * Return: -EINVAL for bad pointers, -ENOMEM if no memory available for the
2370 int dev_pm_opp_disable(struct device *dev, unsigned long freq) in dev_pm_opp_disable() argument
2372 return _opp_set_availability(dev, freq, false); in dev_pm_opp_disable()
2377 * dev_pm_opp_register_notifier() - Register OPP notifier for the device
2392 ret = blocking_notifier_chain_register(&opp_table->head, nb); in dev_pm_opp_register_notifier()
2401 * dev_pm_opp_unregister_notifier() - Unregister OPP notifier for the device
2417 ret = blocking_notifier_chain_unregister(&opp_table->head, nb); in dev_pm_opp_unregister_notifier()
2426 * dev_pm_opp_remove_table() - Free all OPPs associated with the device
2441 if (error != -ENODEV) in dev_pm_opp_remove_table()