Lines Matching +full:opp +full:- +full:table
1 // SPDX-License-Identifier: GPL-2.0-only
3 * Generic OPP Interface
5 * Copyright (C) 2009-2010 Texas Instruments Incorporated.
23 #include "opp.h"
26 * The root of the list of all opp-tables. All opp_table structures branch off
32 /* OPP tables with uninitialized required OPPs */
35 /* Lock to allow exclusive modification to the device and opp lists */
40 /* OPP ID allocator */
48 mutex_lock(&opp_table->lock); in _find_opp_dev()
49 list_for_each_entry(opp_dev, &opp_table->dev_list, node) in _find_opp_dev()
50 if (opp_dev->dev == dev) { in _find_opp_dev()
55 mutex_unlock(&opp_table->lock); in _find_opp_dev()
70 return ERR_PTR(-ENODEV); in _find_opp_table_unlocked()
74 * _find_opp_table() - find opp_table struct using device pointer
75 * @dev: device pointer used to lookup OPP table
77 * Search OPP table for one containing matching device.
79 * Return: pointer to 'struct opp_table' if found, otherwise -ENODEV or
80 * -EINVAL based on type of error.
82 * The callers must call dev_pm_opp_put_opp_table() after the table is used.
90 return ERR_PTR(-EINVAL); in _find_opp_table()
104 * representation in the OPP table and manage the clock configuration themselves
109 return !WARN_ON(opp_table->clk_count > 1); in assert_single_clk()
113 * dev_pm_opp_get_voltage() - Gets the voltage corresponding to an opp
114 * @opp: opp for which voltage has to be returned for
116 * Return: voltage in micro volt corresponding to the opp, else
121 unsigned long dev_pm_opp_get_voltage(struct dev_pm_opp *opp) in dev_pm_opp_get_voltage() argument
123 if (IS_ERR_OR_NULL(opp)) { in dev_pm_opp_get_voltage()
128 return opp->supplies[0].u_volt; in dev_pm_opp_get_voltage()
133 * dev_pm_opp_get_supplies() - Gets the supply information corresponding to an opp
134 * @opp: opp for which voltage has to be returned for
143 int dev_pm_opp_get_supplies(struct dev_pm_opp *opp, in dev_pm_opp_get_supplies() argument
146 if (IS_ERR_OR_NULL(opp) || !supplies) { in dev_pm_opp_get_supplies()
148 return -EINVAL; in dev_pm_opp_get_supplies()
151 memcpy(supplies, opp->supplies, in dev_pm_opp_get_supplies()
152 sizeof(*supplies) * opp->opp_table->regulator_count); in dev_pm_opp_get_supplies()
158 * dev_pm_opp_get_power() - Gets the power corresponding to an opp
159 * @opp: opp for which power has to be returned for
161 * Return: power in micro watt corresponding to the opp, else
166 unsigned long dev_pm_opp_get_power(struct dev_pm_opp *opp) in dev_pm_opp_get_power() argument
171 if (IS_ERR_OR_NULL(opp)) { in dev_pm_opp_get_power()
175 for (i = 0; i < opp->opp_table->regulator_count; i++) in dev_pm_opp_get_power()
176 opp_power += opp->supplies[i].u_watt; in dev_pm_opp_get_power()
183 * dev_pm_opp_get_freq() - Gets the frequency corresponding to an available opp
184 * @opp: opp for which frequency has to be returned for
186 * Return: frequency in hertz corresponding to the opp, else
189 unsigned long dev_pm_opp_get_freq(struct dev_pm_opp *opp) in dev_pm_opp_get_freq() argument
191 if (IS_ERR_OR_NULL(opp)) { in dev_pm_opp_get_freq()
196 if (!assert_single_clk(opp->opp_table)) in dev_pm_opp_get_freq()
199 return opp->rates[0]; in dev_pm_opp_get_freq()
204 * dev_pm_opp_get_level() - Gets the level corresponding to an available opp
205 * @opp: opp for which level value has to be returned for
207 * Return: level read from device tree corresponding to the opp, else
210 unsigned int dev_pm_opp_get_level(struct dev_pm_opp *opp) in dev_pm_opp_get_level() argument
212 if (IS_ERR_OR_NULL(opp) || !opp->available) { in dev_pm_opp_get_level()
217 return opp->level; in dev_pm_opp_get_level()
222 * dev_pm_opp_get_required_pstate() - Gets the required performance state
223 * corresponding to an available opp
224 * @opp: opp for which performance state has to be returned for
225 * @index: index of the required opp
228 * required opp, else return 0.
230 unsigned int dev_pm_opp_get_required_pstate(struct dev_pm_opp *opp, in dev_pm_opp_get_required_pstate() argument
233 if (IS_ERR_OR_NULL(opp) || !opp->available || in dev_pm_opp_get_required_pstate()
234 index >= opp->opp_table->required_opp_count) { in dev_pm_opp_get_required_pstate()
239 /* required-opps not fully initialized yet */ in dev_pm_opp_get_required_pstate()
240 if (lazy_linking_pending(opp->opp_table)) in dev_pm_opp_get_required_pstate()
243 return opp->required_opps[index]->pstate; in dev_pm_opp_get_required_pstate()
248 * dev_pm_opp_is_turbo() - Returns if opp is turbo OPP or not
249 * @opp: opp for which turbo mode is being verified
255 * Return: true if opp is turbo opp, else false.
257 bool dev_pm_opp_is_turbo(struct dev_pm_opp *opp) in dev_pm_opp_is_turbo() argument
259 if (IS_ERR_OR_NULL(opp) || !opp->available) { in dev_pm_opp_is_turbo()
264 return opp->turbo; in dev_pm_opp_is_turbo()
269 * dev_pm_opp_get_max_clock_latency() - Get max clock latency in nanoseconds
283 clock_latency_ns = opp_table->clock_latency_ns_max; in dev_pm_opp_get_max_clock_latency()
292 * dev_pm_opp_get_max_volt_latency() - Get max voltage latency in nanoseconds
300 struct dev_pm_opp *opp; in dev_pm_opp_get_max_volt_latency() local
314 if (!opp_table->regulators) in dev_pm_opp_get_max_volt_latency()
317 count = opp_table->regulator_count; in dev_pm_opp_get_max_volt_latency()
323 mutex_lock(&opp_table->lock); in dev_pm_opp_get_max_volt_latency()
329 list_for_each_entry(opp, &opp_table->opp_list, node) { in dev_pm_opp_get_max_volt_latency()
330 if (!opp->available) in dev_pm_opp_get_max_volt_latency()
333 if (opp->supplies[i].u_volt_min < uV[i].min) in dev_pm_opp_get_max_volt_latency()
334 uV[i].min = opp->supplies[i].u_volt_min; in dev_pm_opp_get_max_volt_latency()
335 if (opp->supplies[i].u_volt_max > uV[i].max) in dev_pm_opp_get_max_volt_latency()
336 uV[i].max = opp->supplies[i].u_volt_max; in dev_pm_opp_get_max_volt_latency()
340 mutex_unlock(&opp_table->lock); in dev_pm_opp_get_max_volt_latency()
347 reg = opp_table->regulators[i]; in dev_pm_opp_get_max_volt_latency()
362 * dev_pm_opp_get_max_transition_latency() - Get max transition latency in
367 * switch from one OPP to other.
377 * dev_pm_opp_get_suspend_opp_freq() - Get frequency of suspend opp in Hz
380 * Return: This function returns the frequency of the OPP marked as suspend_opp
392 if (opp_table->suspend_opp && opp_table->suspend_opp->available) in dev_pm_opp_get_suspend_opp_freq()
393 freq = dev_pm_opp_get_freq(opp_table->suspend_opp); in dev_pm_opp_get_suspend_opp_freq()
403 struct dev_pm_opp *opp; in _get_opp_count() local
406 mutex_lock(&opp_table->lock); in _get_opp_count()
408 list_for_each_entry(opp, &opp_table->opp_list, node) { in _get_opp_count()
409 if (opp->available) in _get_opp_count()
413 mutex_unlock(&opp_table->lock); in _get_opp_count()
419 * dev_pm_opp_get_opp_count() - Get number of opps available in the opp table
433 dev_dbg(dev, "%s: OPP table not found (%d)\n", in dev_pm_opp_get_opp_count()
446 static unsigned long _read_freq(struct dev_pm_opp *opp, int index) in _read_freq() argument
448 return opp->rates[0]; in _read_freq()
451 static unsigned long _read_level(struct dev_pm_opp *opp, int index) in _read_level() argument
453 return opp->level; in _read_level()
456 static unsigned long _read_bw(struct dev_pm_opp *opp, int index) in _read_bw() argument
458 return opp->bandwidth[index].peak; in _read_bw()
462 static bool _compare_exact(struct dev_pm_opp **opp, struct dev_pm_opp *temp_opp, in _compare_exact() argument
466 *opp = temp_opp; in _compare_exact()
473 static bool _compare_ceil(struct dev_pm_opp **opp, struct dev_pm_opp *temp_opp, in _compare_ceil() argument
477 *opp = temp_opp; in _compare_ceil()
484 static bool _compare_floor(struct dev_pm_opp **opp, struct dev_pm_opp *temp_opp, in _compare_floor() argument
490 *opp = temp_opp; in _compare_floor()
497 unsigned long (*read)(struct dev_pm_opp *opp, int index), in _opp_table_find_key() argument
498 bool (*compare)(struct dev_pm_opp **opp, struct dev_pm_opp *temp_opp, in _opp_table_find_key() argument
502 struct dev_pm_opp *temp_opp, *opp = ERR_PTR(-ERANGE); in _opp_table_find_key() local
506 return ERR_PTR(-EINVAL); in _opp_table_find_key()
508 mutex_lock(&opp_table->lock); in _opp_table_find_key()
510 list_for_each_entry(temp_opp, &opp_table->opp_list, node) { in _opp_table_find_key()
511 if (temp_opp->available == available) { in _opp_table_find_key()
512 if (compare(&opp, temp_opp, read(temp_opp, index), *key)) in _opp_table_find_key()
517 /* Increment the reference count of OPP */ in _opp_table_find_key()
518 if (!IS_ERR(opp)) { in _opp_table_find_key()
519 *key = read(opp, index); in _opp_table_find_key()
520 dev_pm_opp_get(opp); in _opp_table_find_key()
523 mutex_unlock(&opp_table->lock); in _opp_table_find_key()
525 return opp; in _opp_table_find_key()
530 unsigned long (*read)(struct dev_pm_opp *opp, int index), in _find_key() argument
531 bool (*compare)(struct dev_pm_opp **opp, struct dev_pm_opp *temp_opp, in _find_key() argument
536 struct dev_pm_opp *opp; in _find_key() local
540 dev_err(dev, "%s: OPP table not found (%ld)\n", __func__, in _find_key()
545 opp = _opp_table_find_key(opp_table, key, index, available, read, in _find_key()
550 return opp; in _find_key()
555 unsigned long (*read)(struct dev_pm_opp *opp, int index), in _find_key_exact() argument
568 unsigned long (*read)(struct dev_pm_opp *opp, int index), in _opp_table_find_key_ceil() argument
577 unsigned long (*read)(struct dev_pm_opp *opp, int index), in _find_key_ceil() argument
586 unsigned long (*read)(struct dev_pm_opp *opp, int index), in _find_key_floor() argument
594 * dev_pm_opp_find_freq_exact() - search for an exact frequency
597 * @available: true/false - match for available opp
599 * Return: Searches for exact match in the opp table and returns pointer to the
600 * matching opp if found, else returns ERR_PTR in case of error and should
607 * match is for exact matching frequency and is available in the stored OPP
608 * table. if false, the match is for exact frequency which is not available.
610 * This provides a mechanism to enable an opp which is not available currently
613 * The callers are required to call dev_pm_opp_put() for the returned OPP after
632 * dev_pm_opp_find_freq_ceil() - Search for an rounded ceil freq
636 * Search for the matching ceil *available* OPP from a starting freq
639 * Return: matching *opp and refreshes *freq accordingly, else returns
646 * The callers are required to call dev_pm_opp_put() for the returned OPP after
657 * dev_pm_opp_find_freq_floor() - Search for a rounded floor freq
661 * Search for the matching floor *available* OPP from a starting freq
664 * Return: matching *opp and refreshes *freq accordingly, else returns
671 * The callers are required to call dev_pm_opp_put() for the returned OPP after
682 * dev_pm_opp_find_level_exact() - search for an exact level
686 * Return: Searches for exact match in the opp table and returns pointer to the
687 * matching opp if found, else returns ERR_PTR in case of error and should
693 * The callers are required to call dev_pm_opp_put() for the returned OPP after
704 * dev_pm_opp_find_level_ceil() - search for an rounded up level
708 * Return: Searches for rounded up match in the opp table and returns pointer
709 * to the matching opp if found, else returns ERR_PTR in case of error and
715 * The callers are required to call dev_pm_opp_put() for the returned OPP after
722 struct dev_pm_opp *opp; in dev_pm_opp_find_level_ceil() local
724 opp = _find_key_ceil(dev, &temp, 0, true, _read_level, NULL); in dev_pm_opp_find_level_ceil()
726 return opp; in dev_pm_opp_find_level_ceil()
731 * dev_pm_opp_find_bw_ceil() - Search for a rounded ceil bandwidth
736 * Search for the matching floor *available* OPP from a starting bandwidth
739 * Return: matching *opp and refreshes *bw accordingly, else returns
746 * The callers are required to call dev_pm_opp_put() for the returned OPP after
753 struct dev_pm_opp *opp; in dev_pm_opp_find_bw_ceil() local
755 opp = _find_key_ceil(dev, &temp, index, true, _read_bw, NULL); in dev_pm_opp_find_bw_ceil()
757 return opp; in dev_pm_opp_find_bw_ceil()
762 * dev_pm_opp_find_bw_floor() - Search for a rounded floor bandwidth
767 * Search for the matching floor *available* OPP from a starting bandwidth
770 * Return: matching *opp and refreshes *bw accordingly, else returns
777 * The callers are required to call dev_pm_opp_put() for the returned OPP after
784 struct dev_pm_opp *opp; in dev_pm_opp_find_bw_floor() local
786 opp = _find_key_floor(dev, &temp, index, true, _read_bw, NULL); in dev_pm_opp_find_bw_floor()
788 return opp; in dev_pm_opp_find_bw_floor()
805 supply->u_volt_min, supply->u_volt, supply->u_volt_max); in _set_opp_voltage()
807 ret = regulator_set_voltage_triplet(reg, supply->u_volt_min, in _set_opp_voltage()
808 supply->u_volt, supply->u_volt_max); in _set_opp_voltage()
811 __func__, supply->u_volt_min, supply->u_volt, in _set_opp_voltage()
812 supply->u_volt_max, ret); in _set_opp_voltage()
819 struct dev_pm_opp *opp, void *data, bool scaling_down) in _opp_config_clk_single() argument
825 /* One of target and opp must be available */ in _opp_config_clk_single()
828 } else if (opp) { in _opp_config_clk_single()
829 freq = opp->rates[0]; in _opp_config_clk_single()
832 return -EINVAL; in _opp_config_clk_single()
835 ret = clk_set_rate(opp_table->clk, freq); in _opp_config_clk_single()
840 opp_table->rate_clk_single = freq; in _opp_config_clk_single()
851 struct opp_table *opp_table, struct dev_pm_opp *opp, void *data, in dev_pm_opp_config_clks_simple() argument
857 for (i = opp_table->clk_count - 1; i >= 0; i--) { in dev_pm_opp_config_clks_simple()
858 ret = clk_set_rate(opp_table->clks[i], opp->rates[i]); in dev_pm_opp_config_clks_simple()
866 for (i = 0; i < opp_table->clk_count; i++) { in dev_pm_opp_config_clks_simple()
867 ret = clk_set_rate(opp_table->clks[i], opp->rates[i]); in dev_pm_opp_config_clks_simple()
890 return -EINVAL; in _opp_config_regulator_single()
893 ret = _set_opp_voltage(dev, reg, new_opp->supplies); in _opp_config_regulator_single()
899 * some boot-enabled regulators. in _opp_config_regulator_single()
901 if (unlikely(!new_opp->opp_table->enabled)) { in _opp_config_regulator_single()
911 struct dev_pm_opp *opp, struct device *dev) in _set_opp_bw() argument
916 if (!opp_table->paths) in _set_opp_bw()
919 for (i = 0; i < opp_table->path_count; i++) { in _set_opp_bw()
920 if (!opp) { in _set_opp_bw()
924 avg = opp->bandwidth[i].avg; in _set_opp_bw()
925 peak = opp->bandwidth[i].peak; in _set_opp_bw()
927 ret = icc_set_bw(opp_table->paths[i], avg, peak); in _set_opp_bw()
930 opp ? "set" : "remove", i, ret); in _set_opp_bw()
939 struct dev_pm_opp *opp, int i) in _set_required_opp() argument
941 unsigned int pstate = likely(opp) ? opp->required_opps[i]->pstate : 0; in _set_required_opp()
959 struct dev_pm_opp *opp, bool up) in _set_required_opps() argument
961 struct opp_table **required_opp_tables = opp_table->required_opp_tables; in _set_required_opps()
962 struct device **genpd_virt_devs = opp_table->genpd_virt_devs; in _set_required_opps()
968 /* required-opps not fully initialized yet */ in _set_required_opps()
970 return -EBUSY; in _set_required_opps()
973 * We only support genpd's OPPs in the "required-opps" for now, as we in _set_required_opps()
974 * don't know much about other use cases. Error out if the required OPP in _set_required_opps()
977 if (unlikely(!required_opp_tables[0]->is_genpd)) { in _set_required_opps()
978 dev_err(dev, "required-opps don't belong to a genpd\n"); in _set_required_opps()
979 return -ENOENT; in _set_required_opps()
984 return _set_required_opp(dev, dev, opp, 0); in _set_required_opps()
992 mutex_lock(&opp_table->genpd_virt_dev_lock); in _set_required_opps()
996 for (i = 0; i < opp_table->required_opp_count; i++) { in _set_required_opps()
997 ret = _set_required_opp(dev, genpd_virt_devs[i], opp, i); in _set_required_opps()
1002 for (i = opp_table->required_opp_count - 1; i >= 0; i--) { in _set_required_opps()
1003 ret = _set_required_opp(dev, genpd_virt_devs[i], opp, i); in _set_required_opps()
1009 mutex_unlock(&opp_table->genpd_virt_dev_lock); in _set_required_opps()
1016 struct dev_pm_opp *opp = ERR_PTR(-ENODEV); in _find_current_opp() local
1019 if (!IS_ERR(opp_table->clk)) { in _find_current_opp()
1020 freq = clk_get_rate(opp_table->clk); in _find_current_opp()
1021 opp = _find_freq_ceil(opp_table, &freq); in _find_current_opp()
1025 * Unable to find the current OPP ? Pick the first from the list since in _find_current_opp()
1029 if (IS_ERR(opp)) { in _find_current_opp()
1030 mutex_lock(&opp_table->lock); in _find_current_opp()
1031 opp = list_first_entry(&opp_table->opp_list, struct dev_pm_opp, node); in _find_current_opp()
1032 dev_pm_opp_get(opp); in _find_current_opp()
1033 mutex_unlock(&opp_table->lock); in _find_current_opp()
1036 opp_table->current_opp = opp; in _find_current_opp()
1043 if (!opp_table->enabled) in _disable_opp_table()
1048 * have OPP table for the device, while others don't and in _disable_opp_table()
1058 if (opp_table->regulators) in _disable_opp_table()
1059 regulator_disable(opp_table->regulators[0]); in _disable_opp_table()
1063 opp_table->enabled = false; in _disable_opp_table()
1068 struct dev_pm_opp *opp, void *clk_data, bool forced) in _set_opp() argument
1073 if (unlikely(!opp)) in _set_opp()
1076 /* Find the currently set OPP if we don't know already */ in _set_opp()
1077 if (unlikely(!opp_table->current_opp)) in _set_opp()
1080 old_opp = opp_table->current_opp; in _set_opp()
1083 if (!forced && old_opp == opp && opp_table->enabled) { in _set_opp()
1088 dev_dbg(dev, "%s: switching OPP: Freq %lu -> %lu Hz, Level %u -> %u, Bw %u -> %u\n", in _set_opp()
1089 __func__, old_opp->rates[0], opp->rates[0], old_opp->level, in _set_opp()
1090 opp->level, old_opp->bandwidth ? old_opp->bandwidth[0].peak : 0, in _set_opp()
1091 opp->bandwidth ? opp->bandwidth[0].peak : 0); in _set_opp()
1093 scaling_down = _opp_compare_key(opp_table, old_opp, opp); in _set_opp()
1094 if (scaling_down == -1) in _set_opp()
1099 ret = _set_required_opps(dev, opp_table, opp, true); in _set_opp()
1105 ret = _set_opp_bw(opp_table, opp, dev); in _set_opp()
1111 if (opp_table->config_regulators) { in _set_opp()
1112 ret = opp_table->config_regulators(dev, old_opp, opp, in _set_opp()
1113 opp_table->regulators, in _set_opp()
1114 opp_table->regulator_count); in _set_opp()
1123 if (opp_table->config_clks) { in _set_opp()
1124 ret = opp_table->config_clks(dev, opp_table, opp, clk_data, scaling_down); in _set_opp()
1131 if (opp_table->config_regulators) { in _set_opp()
1132 ret = opp_table->config_regulators(dev, old_opp, opp, in _set_opp()
1133 opp_table->regulators, in _set_opp()
1134 opp_table->regulator_count); in _set_opp()
1142 ret = _set_opp_bw(opp_table, opp, dev); in _set_opp()
1148 ret = _set_required_opps(dev, opp_table, opp, false); in _set_opp()
1155 opp_table->enabled = true; in _set_opp()
1159 dev_pm_opp_get(opp); in _set_opp()
1160 opp_table->current_opp = opp; in _set_opp()
1166 * dev_pm_opp_set_rate() - Configure new OPP based on frequency
1170 * This configures the power-supplies to the levels specified by the OPP
1173 * provided by the opp, should have already rounded to the target OPP's
1180 struct dev_pm_opp *opp = NULL; in dev_pm_opp_set_rate() local
1186 dev_err(dev, "%s: device's opp table doesn't exist\n", __func__); in dev_pm_opp_set_rate()
1192 * For IO devices which require an OPP on some platforms/SoCs in dev_pm_opp_set_rate()
1194 * we look for empty OPP tables with just a clock handle and in dev_pm_opp_set_rate()
1199 ret = opp_table->config_clks(dev, opp_table, NULL, in dev_pm_opp_set_rate()
1204 freq = clk_round_rate(opp_table->clk, target_freq); in dev_pm_opp_set_rate()
1210 * frequencies than the OPP table, don't update the frequency we in dev_pm_opp_set_rate()
1214 opp = _find_freq_ceil(opp_table, &temp_freq); in dev_pm_opp_set_rate()
1215 if (IS_ERR(opp)) { in dev_pm_opp_set_rate()
1216 ret = PTR_ERR(opp); in dev_pm_opp_set_rate()
1217 dev_err(dev, "%s: failed to find OPP for freq %lu (%d)\n", in dev_pm_opp_set_rate()
1223 * An OPP entry specifies the highest frequency at which other in dev_pm_opp_set_rate()
1224 * properties of the OPP entry apply. Even if the new OPP is in dev_pm_opp_set_rate()
1229 forced = opp_table->rate_clk_single != target_freq; in dev_pm_opp_set_rate()
1232 ret = _set_opp(dev, opp_table, opp, &target_freq, forced); in dev_pm_opp_set_rate()
1235 dev_pm_opp_put(opp); in dev_pm_opp_set_rate()
1244 * dev_pm_opp_set_opp() - Configure device for OPP
1246 * @opp: OPP to set to
1248 * This configures the device based on the properties of the OPP passed to this
1253 int dev_pm_opp_set_opp(struct device *dev, struct dev_pm_opp *opp) in dev_pm_opp_set_opp() argument
1260 dev_err(dev, "%s: device opp doesn't exist\n", __func__); in dev_pm_opp_set_opp()
1264 ret = _set_opp(dev, opp_table, opp, NULL, false); in dev_pm_opp_set_opp()
1271 /* OPP-dev Helpers */
1276 list_del(&opp_dev->node); in _remove_opp_dev()
1289 /* Initialize opp-dev */ in _add_opp_dev()
1290 opp_dev->dev = dev; in _add_opp_dev()
1292 mutex_lock(&opp_table->lock); in _add_opp_dev()
1293 list_add(&opp_dev->node, &opp_table->dev_list); in _add_opp_dev()
1294 mutex_unlock(&opp_table->lock); in _add_opp_dev()
1309 * Allocate a new OPP table. In the infrequent case where a new in _allocate_opp_table()
1314 return ERR_PTR(-ENOMEM); in _allocate_opp_table()
1316 mutex_init(&opp_table->lock); in _allocate_opp_table()
1317 mutex_init(&opp_table->genpd_virt_dev_lock); in _allocate_opp_table()
1318 INIT_LIST_HEAD(&opp_table->dev_list); in _allocate_opp_table()
1319 INIT_LIST_HEAD(&opp_table->lazy); in _allocate_opp_table()
1321 opp_table->clk = ERR_PTR(-ENODEV); in _allocate_opp_table()
1324 opp_table->regulator_count = -1; in _allocate_opp_table()
1328 ret = -ENOMEM; in _allocate_opp_table()
1337 if (ret == -EPROBE_DEFER) in _allocate_opp_table()
1344 BLOCKING_INIT_NOTIFIER_HEAD(&opp_table->head); in _allocate_opp_table()
1345 INIT_LIST_HEAD(&opp_table->opp_list); in _allocate_opp_table()
1346 kref_init(&opp_table->kref); in _allocate_opp_table()
1359 kref_get(&opp_table->kref); in _get_opp_table_kref()
1372 if (!getclk || IS_ERR(opp_table) || !IS_ERR(opp_table->clk) || in _update_opp_table_clk()
1373 opp_table->clks) in _update_opp_table_clk()
1377 opp_table->clk = clk_get(dev, NULL); in _update_opp_table_clk()
1379 ret = PTR_ERR_OR_ZERO(opp_table->clk); in _update_opp_table_clk()
1381 opp_table->config_clks = _opp_config_clk_single; in _update_opp_table_clk()
1382 opp_table->clk_count = 1; in _update_opp_table_clk()
1386 if (ret == -ENOENT) { in _update_opp_table_clk()
1388 * There are few platforms which don't want the OPP core to in _update_opp_table_clk()
1391 * contains a valid clk entry. The OPP nodes in DT may still in _update_opp_table_clk()
1392 * contain "opp-hz" property though, which we need to parse and in _update_opp_table_clk()
1393 * allow the platform to find an OPP based on freq later on. in _update_opp_table_clk()
1397 * frequency in opp->rates and also parse the entries in DT. in _update_opp_table_clk()
1399 opp_table->clk_count = 1; in _update_opp_table_clk()
1412 * We need to make sure that the OPP table for a device doesn't get added twice,
1416 * table and if not found, create a new one) under the opp_table_lock, so only
1420 * indirect users of OPP core.
1424 * of adding an OPP table and others should wait for it to finish.
1439 * The opp_tables list or an OPP table's dev_list is getting updated by in _add_opp_table_indexed()
1457 opp_table = ERR_PTR(-ENOMEM); in _add_opp_table_indexed()
1466 list_add(&opp_table->node, &opp_tables); in _add_opp_table_indexed()
1495 list_del(&opp_table->node); in _opp_table_kref_release()
1498 if (opp_table->current_opp) in _opp_table_kref_release()
1499 dev_pm_opp_put(opp_table->current_opp); in _opp_table_kref_release()
1504 if (!IS_ERR(opp_table->clk)) in _opp_table_kref_release()
1505 clk_put(opp_table->clk); in _opp_table_kref_release()
1507 if (opp_table->paths) { in _opp_table_kref_release()
1508 for (i = 0; i < opp_table->path_count; i++) in _opp_table_kref_release()
1509 icc_put(opp_table->paths[i]); in _opp_table_kref_release()
1510 kfree(opp_table->paths); in _opp_table_kref_release()
1513 WARN_ON(!list_empty(&opp_table->opp_list)); in _opp_table_kref_release()
1515 list_for_each_entry_safe(opp_dev, temp, &opp_table->dev_list, node) { in _opp_table_kref_release()
1517 * The OPP table is getting removed, drop the performance state in _opp_table_kref_release()
1520 if (opp_table->genpd_performance_state) in _opp_table_kref_release()
1521 dev_pm_genpd_set_performance_state((struct device *)(opp_dev->dev), 0); in _opp_table_kref_release()
1526 mutex_destroy(&opp_table->genpd_virt_dev_lock); in _opp_table_kref_release()
1527 mutex_destroy(&opp_table->lock); in _opp_table_kref_release()
1533 kref_put_mutex(&opp_table->kref, _opp_table_kref_release, in dev_pm_opp_put_opp_table()
1538 void _opp_free(struct dev_pm_opp *opp) in _opp_free() argument
1540 kfree(opp); in _opp_free()
1545 struct dev_pm_opp *opp = container_of(kref, struct dev_pm_opp, kref); in _opp_kref_release() local
1546 struct opp_table *opp_table = opp->opp_table; in _opp_kref_release()
1548 list_del(&opp->node); in _opp_kref_release()
1549 mutex_unlock(&opp_table->lock); in _opp_kref_release()
1555 blocking_notifier_call_chain(&opp_table->head, OPP_EVENT_REMOVE, opp); in _opp_kref_release()
1556 _of_clear_opp(opp_table, opp); in _opp_kref_release()
1557 opp_debug_remove_one(opp); in _opp_kref_release()
1558 kfree(opp); in _opp_kref_release()
1561 void dev_pm_opp_get(struct dev_pm_opp *opp) in dev_pm_opp_get() argument
1563 kref_get(&opp->kref); in dev_pm_opp_get()
1566 void dev_pm_opp_put(struct dev_pm_opp *opp) in dev_pm_opp_put() argument
1568 kref_put_mutex(&opp->kref, _opp_kref_release, &opp->opp_table->lock); in dev_pm_opp_put()
1573 * dev_pm_opp_remove() - Remove an OPP from OPP table
1575 * @freq: OPP to remove with matching 'freq'
1577 * This function removes an opp from the opp table.
1581 struct dev_pm_opp *opp = NULL, *iter; in dev_pm_opp_remove() local
1591 mutex_lock(&opp_table->lock); in dev_pm_opp_remove()
1593 list_for_each_entry(iter, &opp_table->opp_list, node) { in dev_pm_opp_remove()
1594 if (iter->rates[0] == freq) { in dev_pm_opp_remove()
1595 opp = iter; in dev_pm_opp_remove()
1600 mutex_unlock(&opp_table->lock); in dev_pm_opp_remove()
1602 if (opp) { in dev_pm_opp_remove()
1603 dev_pm_opp_put(opp); in dev_pm_opp_remove()
1608 dev_warn(dev, "%s: Couldn't find OPP with freq: %lu\n", in dev_pm_opp_remove()
1621 struct dev_pm_opp *opp = NULL, *temp; in _opp_get_next() local
1623 mutex_lock(&opp_table->lock); in _opp_get_next()
1624 list_for_each_entry(temp, &opp_table->opp_list, node) { in _opp_get_next()
1626 * Refcount must be dropped only once for each OPP by OPP core, in _opp_get_next()
1629 if (!temp->removed && dynamic == temp->dynamic) { in _opp_get_next()
1630 opp = temp; in _opp_get_next()
1635 mutex_unlock(&opp_table->lock); in _opp_get_next()
1636 return opp; in _opp_get_next()
1642 * called without the opp_table->lock held.
1646 struct dev_pm_opp *opp; in _opp_remove_all() local
1648 while ((opp = _opp_get_next(opp_table, dynamic))) { in _opp_remove_all()
1649 opp->removed = true; in _opp_remove_all()
1650 dev_pm_opp_put(opp); in _opp_remove_all()
1660 mutex_lock(&opp_table->lock); in _opp_remove_all_static()
1662 if (!opp_table->parsed_static_opps) { in _opp_remove_all_static()
1663 mutex_unlock(&opp_table->lock); in _opp_remove_all_static()
1667 if (--opp_table->parsed_static_opps) { in _opp_remove_all_static()
1668 mutex_unlock(&opp_table->lock); in _opp_remove_all_static()
1672 mutex_unlock(&opp_table->lock); in _opp_remove_all_static()
1679 * dev_pm_opp_remove_all_dynamic() - Remove all dynamically created OPPs
1682 * This function removes all dynamically created OPPs from the opp table.
1701 struct dev_pm_opp *opp; in _opp_allocate() local
1705 supply_count = opp_table->regulator_count > 0 ? in _opp_allocate()
1706 opp_table->regulator_count : 1; in _opp_allocate()
1707 supply_size = sizeof(*opp->supplies) * supply_count; in _opp_allocate()
1708 clk_size = sizeof(*opp->rates) * opp_table->clk_count; in _opp_allocate()
1709 icc_size = sizeof(*opp->bandwidth) * opp_table->path_count; in _opp_allocate()
1711 /* allocate new OPP node and supplies structures */ in _opp_allocate()
1712 opp = kzalloc(sizeof(*opp) + supply_size + clk_size + icc_size, GFP_KERNEL); in _opp_allocate()
1713 if (!opp) in _opp_allocate()
1716 /* Put the supplies, bw and clock at the end of the OPP structure */ in _opp_allocate()
1717 opp->supplies = (struct dev_pm_opp_supply *)(opp + 1); in _opp_allocate()
1719 opp->rates = (unsigned long *)(opp->supplies + supply_count); in _opp_allocate()
1722 opp->bandwidth = (struct dev_pm_opp_icc_bw *)(opp->rates + opp_table->clk_count); in _opp_allocate()
1724 INIT_LIST_HEAD(&opp->node); in _opp_allocate()
1726 return opp; in _opp_allocate()
1729 static bool _opp_supported_by_regulators(struct dev_pm_opp *opp, in _opp_supported_by_regulators() argument
1735 if (!opp_table->regulators) in _opp_supported_by_regulators()
1738 for (i = 0; i < opp_table->regulator_count; i++) { in _opp_supported_by_regulators()
1739 reg = opp_table->regulators[i]; in _opp_supported_by_regulators()
1742 opp->supplies[i].u_volt_min, in _opp_supported_by_regulators()
1743 opp->supplies[i].u_volt_max)) { in _opp_supported_by_regulators()
1744 pr_warn("%s: OPP minuV: %lu maxuV: %lu, not supported by regulator\n", in _opp_supported_by_regulators()
1745 __func__, opp->supplies[i].u_volt_min, in _opp_supported_by_regulators()
1746 opp->supplies[i].u_volt_max); in _opp_supported_by_regulators()
1759 for (i = 0; i < opp_table->clk_count; i++) { in _opp_compare_rate()
1760 if (opp1->rates[i] != opp2->rates[i]) in _opp_compare_rate()
1761 return opp1->rates[i] < opp2->rates[i] ? -1 : 1; in _opp_compare_rate()
1773 for (i = 0; i < opp_table->path_count; i++) { in _opp_compare_bw()
1774 if (opp1->bandwidth[i].peak != opp2->bandwidth[i].peak) in _opp_compare_bw()
1775 return opp1->bandwidth[i].peak < opp2->bandwidth[i].peak ? -1 : 1; in _opp_compare_bw()
1786 * -1: opp1 < opp2
1801 if (opp1->level != opp2->level) in _opp_compare_key()
1802 return opp1->level < opp2->level ? -1 : 1; in _opp_compare_key()
1812 struct dev_pm_opp *opp; in _opp_is_duplicate() local
1816 * Insert new OPP in order of increasing frequency and discard if in _opp_is_duplicate()
1819 * Need to use &opp_table->opp_list in the condition part of the 'for' in _opp_is_duplicate()
1823 list_for_each_entry(opp, &opp_table->opp_list, node) { in _opp_is_duplicate()
1824 opp_cmp = _opp_compare_key(opp_table, new_opp, opp); in _opp_is_duplicate()
1826 *head = &opp->node; in _opp_is_duplicate()
1835 __func__, opp->rates[0], opp->supplies[0].u_volt, in _opp_is_duplicate()
1836 opp->available, new_opp->rates[0], in _opp_is_duplicate()
1837 new_opp->supplies[0].u_volt, new_opp->available); in _opp_is_duplicate()
1840 return opp->available && in _opp_is_duplicate()
1841 new_opp->supplies[0].u_volt == opp->supplies[0].u_volt ? -EBUSY : -EEXIST; in _opp_is_duplicate()
1847 void _required_opps_available(struct dev_pm_opp *opp, int count) in _required_opps_available() argument
1852 if (opp->required_opps[i]->available) in _required_opps_available()
1855 opp->available = false; in _required_opps_available()
1856 pr_warn("%s: OPP not supported by required OPP %pOF (%lu)\n", in _required_opps_available()
1857 __func__, opp->required_opps[i]->np, opp->rates[0]); in _required_opps_available()
1865 * -EBUSY: For OPP with same freq/volt and is available. The callers of
1866 * _opp_add() must return 0 if they receive -EBUSY from it. This is to make
1868 * kernel try to initialize the OPP table.
1869 * -EEXIST: For OPP with same freq but different volt or is unavailable. This
1878 mutex_lock(&opp_table->lock); in _opp_add()
1879 head = &opp_table->opp_list; in _opp_add()
1883 mutex_unlock(&opp_table->lock); in _opp_add()
1887 list_add(&new_opp->node, head); in _opp_add()
1888 mutex_unlock(&opp_table->lock); in _opp_add()
1890 new_opp->opp_table = opp_table; in _opp_add()
1891 kref_init(&new_opp->kref); in _opp_add()
1896 new_opp->available = false; in _opp_add()
1897 dev_warn(dev, "%s: OPP not supported by regulators (%lu)\n", in _opp_add()
1898 __func__, new_opp->rates[0]); in _opp_add()
1901 /* required-opps not fully initialized yet */ in _opp_add()
1905 _required_opps_available(new_opp, opp_table->required_opp_count); in _opp_add()
1911 * _opp_add_v1() - Allocate a OPP based on v1 bindings.
1912 * @opp_table: OPP table
1914 * @freq: Frequency in Hz for this OPP
1915 * @u_volt: Voltage in uVolts for this OPP
1918 * This function adds an opp definition to the opp table and returns status.
1919 * The opp is made available by default and it can be controlled using
1927 * Duplicate OPPs (both freq and volt are same) and opp->available
1928 * -EEXIST Freq are same and volt are different OR
1929 * Duplicate OPPs (both freq and volt are same) and !opp->available
1930 * -ENOMEM Memory allocation failure
1940 return -EINVAL; in _opp_add_v1()
1944 return -ENOMEM; in _opp_add_v1()
1946 /* populate the opp table */ in _opp_add_v1()
1947 new_opp->rates[0] = freq; in _opp_add_v1()
1948 tol = u_volt * opp_table->voltage_tolerance_v1 / 100; in _opp_add_v1()
1949 new_opp->supplies[0].u_volt = u_volt; in _opp_add_v1()
1950 new_opp->supplies[0].u_volt_min = u_volt - tol; in _opp_add_v1()
1951 new_opp->supplies[0].u_volt_max = u_volt + tol; in _opp_add_v1()
1952 new_opp->available = true; in _opp_add_v1()
1953 new_opp->dynamic = dynamic; in _opp_add_v1()
1958 if (ret == -EBUSY) in _opp_add_v1()
1967 blocking_notifier_call_chain(&opp_table->head, OPP_EVENT_ADD, new_opp); in _opp_add_v1()
1977 * _opp_set_supported_hw() - Set supported platforms
1978 * @dev: Device for which supported-hw has to be set.
1983 * specify the hierarchy of versions it supports. OPP layer will then enable
1984 * OPPs, which are available for those versions, based on its 'opp-supported-hw'
1990 /* Another CPU that shares the OPP table has set the property ? */ in _opp_set_supported_hw()
1991 if (opp_table->supported_hw) in _opp_set_supported_hw()
1994 opp_table->supported_hw = kmemdup(versions, count * sizeof(*versions), in _opp_set_supported_hw()
1996 if (!opp_table->supported_hw) in _opp_set_supported_hw()
1997 return -ENOMEM; in _opp_set_supported_hw()
1999 opp_table->supported_hw_count = count; in _opp_set_supported_hw()
2005 * _opp_put_supported_hw() - Releases resources blocked for supported hw
2006 * @opp_table: OPP table returned by _opp_set_supported_hw().
2014 if (opp_table->supported_hw) { in _opp_put_supported_hw()
2015 kfree(opp_table->supported_hw); in _opp_put_supported_hw()
2016 opp_table->supported_hw = NULL; in _opp_put_supported_hw()
2017 opp_table->supported_hw_count = 0; in _opp_put_supported_hw()
2022 * _opp_set_prop_name() - Set prop-extn name
2023 * @dev: Device for which the prop-name has to be set.
2028 * which the extension will apply are opp-microvolt and opp-microamp. OPP core
2029 * should postfix the property name with -<name> while looking for them.
2033 /* Another CPU that shares the OPP table has set the property ? */ in _opp_set_prop_name()
2034 if (!opp_table->prop_name) { in _opp_set_prop_name()
2035 opp_table->prop_name = kstrdup(name, GFP_KERNEL); in _opp_set_prop_name()
2036 if (!opp_table->prop_name) in _opp_set_prop_name()
2037 return -ENOMEM; in _opp_set_prop_name()
2044 * _opp_put_prop_name() - Releases resources blocked for prop-name
2045 * @opp_table: OPP table returned by _opp_set_prop_name().
2053 if (opp_table->prop_name) { in _opp_put_prop_name()
2054 kfree(opp_table->prop_name); in _opp_put_prop_name()
2055 opp_table->prop_name = NULL; in _opp_put_prop_name()
2060 * _opp_set_regulators() - Set regulator names for the device
2065 * In order to support OPP switching, OPP layer needs to know the name of the
2083 return -EINVAL; in _opp_set_regulators()
2085 /* Another CPU that shares the OPP table has set the regulators ? */ in _opp_set_regulators()
2086 if (opp_table->regulators) in _opp_set_regulators()
2089 opp_table->regulators = kmalloc_array(count, in _opp_set_regulators()
2090 sizeof(*opp_table->regulators), in _opp_set_regulators()
2092 if (!opp_table->regulators) in _opp_set_regulators()
2093 return -ENOMEM; in _opp_set_regulators()
2104 opp_table->regulators[i] = reg; in _opp_set_regulators()
2107 opp_table->regulator_count = count; in _opp_set_regulators()
2111 opp_table->config_regulators = _opp_config_regulator_single; in _opp_set_regulators()
2117 regulator_put(opp_table->regulators[--i]); in _opp_set_regulators()
2119 kfree(opp_table->regulators); in _opp_set_regulators()
2120 opp_table->regulators = NULL; in _opp_set_regulators()
2121 opp_table->regulator_count = -1; in _opp_set_regulators()
2127 * _opp_put_regulators() - Releases resources blocked for regulator
2128 * @opp_table: OPP table returned from _opp_set_regulators().
2134 if (!opp_table->regulators) in _opp_put_regulators()
2137 if (opp_table->enabled) { in _opp_put_regulators()
2138 for (i = opp_table->regulator_count - 1; i >= 0; i--) in _opp_put_regulators()
2139 regulator_disable(opp_table->regulators[i]); in _opp_put_regulators()
2142 for (i = opp_table->regulator_count - 1; i >= 0; i--) in _opp_put_regulators()
2143 regulator_put(opp_table->regulators[i]); in _opp_put_regulators()
2145 kfree(opp_table->regulators); in _opp_put_regulators()
2146 opp_table->regulators = NULL; in _opp_put_regulators()
2147 opp_table->regulator_count = -1; in _opp_put_regulators()
2154 for (i = count - 1; i >= 0; i--) in _put_clks()
2155 clk_put(opp_table->clks[i]); in _put_clks()
2157 kfree(opp_table->clks); in _put_clks()
2158 opp_table->clks = NULL; in _put_clks()
2162 * _opp_set_clknames() - Set clk names for the device
2166 * In order to support OPP switching, OPP layer needs to get pointers to the
2168 * (i.e. by passing connection-id as NULL), but for a device with multiple
2169 * clocks available, the OPP core needs to know the exact names of the clks to
2195 return -EINVAL; in _opp_set_clknames()
2197 /* Another CPU that shares the OPP table has set the clkname ? */ in _opp_set_clknames()
2198 if (opp_table->clks) in _opp_set_clknames()
2201 opp_table->clks = kmalloc_array(count, sizeof(*opp_table->clks), in _opp_set_clknames()
2203 if (!opp_table->clks) in _opp_set_clknames()
2204 return -ENOMEM; in _opp_set_clknames()
2216 opp_table->clks[i] = clk; in _opp_set_clknames()
2219 opp_table->clk_count = count; in _opp_set_clknames()
2220 opp_table->config_clks = config_clks; in _opp_set_clknames()
2224 if (!opp_table->config_clks) in _opp_set_clknames()
2225 opp_table->config_clks = _opp_config_clk_single; in _opp_set_clknames()
2232 * - avoiding clks[0] everywhere else. in _opp_set_clknames()
2233 * - not running single clk helpers for multiple clk usecase by in _opp_set_clknames()
2236 * Since this is single-clk case, just update the clk pointer in _opp_set_clknames()
2239 opp_table->clk = opp_table->clks[0]; in _opp_set_clknames()
2250 * _opp_put_clknames() - Releases resources blocked for clks.
2251 * @opp_table: OPP table returned from _opp_set_clknames().
2255 if (!opp_table->clks) in _opp_put_clknames()
2258 opp_table->config_clks = NULL; in _opp_put_clknames()
2259 opp_table->clk = ERR_PTR(-ENODEV); in _opp_put_clknames()
2261 _put_clks(opp_table, opp_table->clk_count); in _opp_put_clknames()
2265 * _opp_set_config_regulators_helper() - Register custom set regulator helper.
2276 /* Another CPU that shares the OPP table has set the helper ? */ in _opp_set_config_regulators_helper()
2277 if (!opp_table->config_regulators) in _opp_set_config_regulators_helper()
2278 opp_table->config_regulators = config_regulators; in _opp_set_config_regulators_helper()
2284 * _opp_put_config_regulators_helper() - Releases resources blocked for
2286 * @opp_table: OPP table returned from _opp_set_config_regulators_helper().
2292 if (opp_table->config_regulators) in _opp_put_config_regulators_helper()
2293 opp_table->config_regulators = NULL; in _opp_put_config_regulators_helper()
2300 if (!opp_table->genpd_virt_devs) in _detach_genpd()
2303 for (index = 0; index < opp_table->required_opp_count; index++) { in _detach_genpd()
2304 if (!opp_table->genpd_virt_devs[index]) in _detach_genpd()
2307 dev_pm_domain_detach(opp_table->genpd_virt_devs[index], false); in _detach_genpd()
2308 opp_table->genpd_virt_devs[index] = NULL; in _detach_genpd()
2311 kfree(opp_table->genpd_virt_devs); in _detach_genpd()
2312 opp_table->genpd_virt_devs = NULL; in _detach_genpd()
2316 * _opp_attach_genpd - Attach genpd(s) for the device and save virtual device pointer
2322 * virtual genpd devices, which are created for each consumer device - genpd
2324 * and are required by the OPP core to set the performance state of the genpd.
2332 * Otherwise the original device structure will be used instead by the OPP core.
2335 * "required-opps" are added in DT.
2341 int index = 0, ret = -EINVAL; in _opp_attach_genpd()
2344 if (opp_table->genpd_virt_devs) in _opp_attach_genpd()
2348 * If the genpd's OPP table isn't already initialized, parsing of the in _opp_attach_genpd()
2349 * required-opps fail for dev. We should retry this after genpd's OPP in _opp_attach_genpd()
2350 * table is added. in _opp_attach_genpd()
2352 if (!opp_table->required_opp_count) in _opp_attach_genpd()
2353 return -EPROBE_DEFER; in _opp_attach_genpd()
2355 mutex_lock(&opp_table->genpd_virt_dev_lock); in _opp_attach_genpd()
2357 opp_table->genpd_virt_devs = kcalloc(opp_table->required_opp_count, in _opp_attach_genpd()
2358 sizeof(*opp_table->genpd_virt_devs), in _opp_attach_genpd()
2360 if (!opp_table->genpd_virt_devs) in _opp_attach_genpd()
2364 if (index >= opp_table->required_opp_count) { in _opp_attach_genpd()
2365 dev_err(dev, "Index can't be greater than required-opp-count - 1, %s (%d : %d)\n", in _opp_attach_genpd()
2366 *name, opp_table->required_opp_count, index); in _opp_attach_genpd()
2372 ret = PTR_ERR(virt_dev) ? : -ENODEV; in _opp_attach_genpd()
2377 opp_table->genpd_virt_devs[index] = virt_dev; in _opp_attach_genpd()
2383 *virt_devs = opp_table->genpd_virt_devs; in _opp_attach_genpd()
2384 mutex_unlock(&opp_table->genpd_virt_dev_lock); in _opp_attach_genpd()
2391 mutex_unlock(&opp_table->genpd_virt_dev_lock); in _opp_attach_genpd()
2397 * _opp_detach_genpd() - Detach genpd(s) from the device.
2398 * @opp_table: OPP table returned by _opp_attach_genpd().
2401 * OPP table.
2409 mutex_lock(&opp_table->genpd_virt_dev_lock); in _opp_detach_genpd()
2411 mutex_unlock(&opp_table->genpd_virt_dev_lock); in _opp_detach_genpd()
2416 if (data->flags & OPP_CONFIG_GENPD) in _opp_clear_config()
2417 _opp_detach_genpd(data->opp_table); in _opp_clear_config()
2418 if (data->flags & OPP_CONFIG_REGULATOR) in _opp_clear_config()
2419 _opp_put_regulators(data->opp_table); in _opp_clear_config()
2420 if (data->flags & OPP_CONFIG_SUPPORTED_HW) in _opp_clear_config()
2421 _opp_put_supported_hw(data->opp_table); in _opp_clear_config()
2422 if (data->flags & OPP_CONFIG_REGULATOR_HELPER) in _opp_clear_config()
2423 _opp_put_config_regulators_helper(data->opp_table); in _opp_clear_config()
2424 if (data->flags & OPP_CONFIG_PROP_NAME) in _opp_clear_config()
2425 _opp_put_prop_name(data->opp_table); in _opp_clear_config()
2426 if (data->flags & OPP_CONFIG_CLK) in _opp_clear_config()
2427 _opp_put_clknames(data->opp_table); in _opp_clear_config()
2429 dev_pm_opp_put_opp_table(data->opp_table); in _opp_clear_config()
2434 * dev_pm_opp_set_config() - Set OPP configuration for the device.
2436 * @config: OPP configuration.
2438 * This allows all device OPP configurations to be performed at once.
2441 * be called multiple times for the same OPP table, for example once for each
2442 * CPU that share the same table. This must be balanced by the same number of
2443 * calls to dev_pm_opp_clear_config() in order to free the OPP table properly.
2459 return -ENOMEM; in dev_pm_opp_set_config()
2467 data->opp_table = opp_table; in dev_pm_opp_set_config()
2468 data->flags = 0; in dev_pm_opp_set_config()
2471 if (WARN_ON(!list_empty(&opp_table->opp_list))) { in dev_pm_opp_set_config()
2472 ret = -EBUSY; in dev_pm_opp_set_config()
2477 if (config->clk_names) { in dev_pm_opp_set_config()
2478 ret = _opp_set_clknames(opp_table, dev, config->clk_names, in dev_pm_opp_set_config()
2479 config->config_clks); in dev_pm_opp_set_config()
2483 data->flags |= OPP_CONFIG_CLK; in dev_pm_opp_set_config()
2484 } else if (config->config_clks) { in dev_pm_opp_set_config()
2486 ret = -EINVAL; in dev_pm_opp_set_config()
2491 if (config->prop_name) { in dev_pm_opp_set_config()
2492 ret = _opp_set_prop_name(opp_table, config->prop_name); in dev_pm_opp_set_config()
2496 data->flags |= OPP_CONFIG_PROP_NAME; in dev_pm_opp_set_config()
2500 if (config->config_regulators) { in dev_pm_opp_set_config()
2502 config->config_regulators); in dev_pm_opp_set_config()
2506 data->flags |= OPP_CONFIG_REGULATOR_HELPER; in dev_pm_opp_set_config()
2510 if (config->supported_hw) { in dev_pm_opp_set_config()
2511 ret = _opp_set_supported_hw(opp_table, config->supported_hw, in dev_pm_opp_set_config()
2512 config->supported_hw_count); in dev_pm_opp_set_config()
2516 data->flags |= OPP_CONFIG_SUPPORTED_HW; in dev_pm_opp_set_config()
2520 if (config->regulator_names) { in dev_pm_opp_set_config()
2522 config->regulator_names); in dev_pm_opp_set_config()
2526 data->flags |= OPP_CONFIG_REGULATOR; in dev_pm_opp_set_config()
2530 if (config->genpd_names) { in dev_pm_opp_set_config()
2531 ret = _opp_attach_genpd(opp_table, dev, config->genpd_names, in dev_pm_opp_set_config()
2532 config->virt_devs); in dev_pm_opp_set_config()
2536 data->flags |= OPP_CONFIG_GENPD; in dev_pm_opp_set_config()
2553 * dev_pm_opp_clear_config() - Releases resources blocked for OPP configuration.
2554 * @opp_table: OPP table returned from dev_pm_opp_set_config().
2556 * This allows all device OPP configurations to be cleared at once. This must be
2560 * Currently the first call itself ends up freeing all the OPP configurations,
2561 * while the later ones only drop the OPP table reference. This works well for
2562 * now as we would never want to use an half initialized OPP table and want to
2590 * devm_pm_opp_set_config() - Set OPP configuration for the device.
2592 * @config: OPP configuration.
2594 * This allows all device OPP configurations to be performed at once.
2595 * This is a resource-managed variant of dev_pm_opp_set_config().
2612 * dev_pm_opp_xlate_required_opp() - Find required OPP for @src_table OPP.
2613 * @src_table: OPP table which has @dst_table as one of its required OPP table.
2614 * @dst_table: Required OPP table of the @src_table.
2615 * @src_opp: OPP from the @src_table.
2617 * This function returns the OPP (present in @dst_table) pointed out by the
2618 * "required-opps" property of the @src_opp (present in @src_table).
2620 * The callers are required to call dev_pm_opp_put() for the returned OPP after
2629 struct dev_pm_opp *opp, *dest_opp = ERR_PTR(-ENODEV); in dev_pm_opp_xlate_required_opp() local
2633 !src_table->required_opp_tables) in dev_pm_opp_xlate_required_opp()
2634 return ERR_PTR(-EINVAL); in dev_pm_opp_xlate_required_opp()
2636 /* required-opps not fully initialized yet */ in dev_pm_opp_xlate_required_opp()
2638 return ERR_PTR(-EBUSY); in dev_pm_opp_xlate_required_opp()
2640 for (i = 0; i < src_table->required_opp_count; i++) { in dev_pm_opp_xlate_required_opp()
2641 if (src_table->required_opp_tables[i] == dst_table) { in dev_pm_opp_xlate_required_opp()
2642 mutex_lock(&src_table->lock); in dev_pm_opp_xlate_required_opp()
2644 list_for_each_entry(opp, &src_table->opp_list, node) { in dev_pm_opp_xlate_required_opp()
2645 if (opp == src_opp) { in dev_pm_opp_xlate_required_opp()
2646 dest_opp = opp->required_opps[i]; in dev_pm_opp_xlate_required_opp()
2652 mutex_unlock(&src_table->lock); in dev_pm_opp_xlate_required_opp()
2658 pr_err("%s: Couldn't find matching OPP (%p: %p)\n", __func__, in dev_pm_opp_xlate_required_opp()
2667 * dev_pm_opp_xlate_performance_state() - Find required OPP's pstate for src_table.
2668 * @src_table: OPP table which has dst_table as one of its required OPP table.
2669 * @dst_table: Required OPP table of the src_table.
2672 * This Returns pstate of the OPP (present in @dst_table) pointed out by the
2673 * "required-opps" property of the OPP (present in @src_table) which has
2683 struct dev_pm_opp *opp; in dev_pm_opp_xlate_performance_state() local
2684 int dest_pstate = -EINVAL; in dev_pm_opp_xlate_performance_state()
2691 * and so none of them have the "required-opps" property set. Return the in dev_pm_opp_xlate_performance_state()
2694 if (!src_table || !src_table->required_opp_count) in dev_pm_opp_xlate_performance_state()
2697 /* required-opps not fully initialized yet */ in dev_pm_opp_xlate_performance_state()
2699 return -EBUSY; in dev_pm_opp_xlate_performance_state()
2701 for (i = 0; i < src_table->required_opp_count; i++) { in dev_pm_opp_xlate_performance_state()
2702 if (src_table->required_opp_tables[i]->np == dst_table->np) in dev_pm_opp_xlate_performance_state()
2706 if (unlikely(i == src_table->required_opp_count)) { in dev_pm_opp_xlate_performance_state()
2707 pr_err("%s: Couldn't find matching OPP table (%p: %p)\n", in dev_pm_opp_xlate_performance_state()
2709 return -EINVAL; in dev_pm_opp_xlate_performance_state()
2712 mutex_lock(&src_table->lock); in dev_pm_opp_xlate_performance_state()
2714 list_for_each_entry(opp, &src_table->opp_list, node) { in dev_pm_opp_xlate_performance_state()
2715 if (opp->pstate == pstate) { in dev_pm_opp_xlate_performance_state()
2716 dest_pstate = opp->required_opps[i]->pstate; in dev_pm_opp_xlate_performance_state()
2721 pr_err("%s: Couldn't find matching OPP (%p: %p)\n", __func__, src_table, in dev_pm_opp_xlate_performance_state()
2725 mutex_unlock(&src_table->lock); in dev_pm_opp_xlate_performance_state()
2731 * dev_pm_opp_add() - Add an OPP table from a table definitions
2733 * @freq: Frequency in Hz for this OPP
2734 * @u_volt: Voltage in uVolts for this OPP
2736 * This function adds an opp definition to the opp table and returns status.
2737 * The opp is made available by default and it can be controlled using
2742 * Duplicate OPPs (both freq and volt are same) and opp->available
2743 * -EEXIST Freq are same and volt are different OR
2744 * Duplicate OPPs (both freq and volt are same) and !opp->available
2745 * -ENOMEM Memory allocation failure
2757 opp_table->regulator_count = 1; in dev_pm_opp_add()
2768 * _opp_set_availability() - helper to set the availability of an opp
2770 * @freq: OPP frequency to modify availability
2771 * @availability_req: availability status requested for this opp
2773 * Set the availability of an OPP, opp_{enable,disable} share a common logic
2776 * Return: -EINVAL for bad pointers, -ENOMEM if no memory available for the
2784 struct dev_pm_opp *tmp_opp, *opp = ERR_PTR(-ENODEV); in _opp_set_availability() local
2791 dev_warn(dev, "%s: Device OPP not found (%d)\n", __func__, r); in _opp_set_availability()
2796 r = -EINVAL; in _opp_set_availability()
2800 mutex_lock(&opp_table->lock); in _opp_set_availability()
2803 list_for_each_entry(tmp_opp, &opp_table->opp_list, node) { in _opp_set_availability()
2804 if (tmp_opp->rates[0] == freq) { in _opp_set_availability()
2805 opp = tmp_opp; in _opp_set_availability()
2810 if (IS_ERR(opp)) { in _opp_set_availability()
2811 r = PTR_ERR(opp); in _opp_set_availability()
2816 if (opp->available == availability_req) in _opp_set_availability()
2819 opp->available = availability_req; in _opp_set_availability()
2821 dev_pm_opp_get(opp); in _opp_set_availability()
2822 mutex_unlock(&opp_table->lock); in _opp_set_availability()
2824 /* Notify the change of the OPP availability */ in _opp_set_availability()
2826 blocking_notifier_call_chain(&opp_table->head, OPP_EVENT_ENABLE, in _opp_set_availability()
2827 opp); in _opp_set_availability()
2829 blocking_notifier_call_chain(&opp_table->head, in _opp_set_availability()
2830 OPP_EVENT_DISABLE, opp); in _opp_set_availability()
2832 dev_pm_opp_put(opp); in _opp_set_availability()
2836 mutex_unlock(&opp_table->lock); in _opp_set_availability()
2843 * dev_pm_opp_adjust_voltage() - helper to change the voltage of an OPP
2845 * @freq: OPP frequency to adjust voltage of
2846 * @u_volt: new OPP target voltage
2847 * @u_volt_min: new OPP min voltage
2848 * @u_volt_max: new OPP max voltage
2850 * Return: -EINVAL for bad pointers, -ENOMEM if no memory available for the
2860 struct dev_pm_opp *tmp_opp, *opp = ERR_PTR(-ENODEV); in dev_pm_opp_adjust_voltage() local
2867 dev_warn(dev, "%s: Device OPP not found (%d)\n", __func__, r); in dev_pm_opp_adjust_voltage()
2872 r = -EINVAL; in dev_pm_opp_adjust_voltage()
2876 mutex_lock(&opp_table->lock); in dev_pm_opp_adjust_voltage()
2879 list_for_each_entry(tmp_opp, &opp_table->opp_list, node) { in dev_pm_opp_adjust_voltage()
2880 if (tmp_opp->rates[0] == freq) { in dev_pm_opp_adjust_voltage()
2881 opp = tmp_opp; in dev_pm_opp_adjust_voltage()
2886 if (IS_ERR(opp)) { in dev_pm_opp_adjust_voltage()
2887 r = PTR_ERR(opp); in dev_pm_opp_adjust_voltage()
2892 if (opp->supplies->u_volt == u_volt) in dev_pm_opp_adjust_voltage()
2895 opp->supplies->u_volt = u_volt; in dev_pm_opp_adjust_voltage()
2896 opp->supplies->u_volt_min = u_volt_min; in dev_pm_opp_adjust_voltage()
2897 opp->supplies->u_volt_max = u_volt_max; in dev_pm_opp_adjust_voltage()
2899 dev_pm_opp_get(opp); in dev_pm_opp_adjust_voltage()
2900 mutex_unlock(&opp_table->lock); in dev_pm_opp_adjust_voltage()
2902 /* Notify the voltage change of the OPP */ in dev_pm_opp_adjust_voltage()
2903 blocking_notifier_call_chain(&opp_table->head, OPP_EVENT_ADJUST_VOLTAGE, in dev_pm_opp_adjust_voltage()
2904 opp); in dev_pm_opp_adjust_voltage()
2906 dev_pm_opp_put(opp); in dev_pm_opp_adjust_voltage()
2910 mutex_unlock(&opp_table->lock); in dev_pm_opp_adjust_voltage()
2918 * dev_pm_opp_enable() - Enable a specific OPP
2920 * @freq: OPP frequency to enable
2922 * Enables a provided opp. If the operation is valid, this returns 0, else the
2923 * corresponding error value. It is meant to be used for users an OPP available
2926 * Return: -EINVAL for bad pointers, -ENOMEM if no memory available for the
2937 * dev_pm_opp_disable() - Disable a specific OPP
2939 * @freq: OPP frequency to disable
2941 * Disables a provided opp. If the operation is valid, this returns
2943 * control by users to make this OPP not available until the circumstances are
2946 * Return: -EINVAL for bad pointers, -ENOMEM if no memory available for the
2957 * dev_pm_opp_register_notifier() - Register OPP notifier for the device
2972 ret = blocking_notifier_chain_register(&opp_table->head, nb); in dev_pm_opp_register_notifier()
2981 * dev_pm_opp_unregister_notifier() - Unregister OPP notifier for the device
2997 ret = blocking_notifier_chain_unregister(&opp_table->head, nb); in dev_pm_opp_unregister_notifier()
3006 * dev_pm_opp_remove_table() - Free all OPPs associated with the device
3007 * @dev: device pointer used to lookup OPP table.
3016 /* Check for existing table for 'dev' */ in dev_pm_opp_remove_table()
3021 if (error != -ENODEV) in dev_pm_opp_remove_table()
3030 * Drop the extra reference only if the OPP table was successfully added in dev_pm_opp_remove_table()
3042 * dev_pm_opp_sync_regulators() - Sync state of voltage regulators
3045 * Sync voltage state of the OPP table regulators.
3055 /* Device may not have OPP table */ in dev_pm_opp_sync_regulators()
3061 if (unlikely(!opp_table->regulators)) in dev_pm_opp_sync_regulators()
3065 if (!opp_table->enabled) in dev_pm_opp_sync_regulators()
3068 for (i = 0; i < opp_table->regulator_count; i++) { in dev_pm_opp_sync_regulators()
3069 reg = opp_table->regulators[i]; in dev_pm_opp_sync_regulators()