Lines Matching +full:opp +full:- +full:1
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 /* Lock to allow exclusive modification to the device and opp lists */
37 /* OPP ID allocator */
45 mutex_lock(&opp_table->lock); in _find_opp_dev()
46 list_for_each_entry(opp_dev, &opp_table->dev_list, node) in _find_opp_dev()
47 if (opp_dev->dev == dev) { in _find_opp_dev()
52 mutex_unlock(&opp_table->lock); in _find_opp_dev()
67 return ERR_PTR(-ENODEV); in _find_opp_table_unlocked()
71 * _find_opp_table() - find opp_table struct using device pointer
72 * @dev: device pointer used to lookup OPP table
74 * Search OPP table for one containing matching device.
76 * Return: pointer to 'struct opp_table' if found, otherwise -ENODEV or
77 * -EINVAL based on type of error.
87 return ERR_PTR(-EINVAL); in _find_opp_table()
100 * We don't force clk_count == 1 here as there are users who don't have a clock
101 * representation in the OPP table and manage the clock configuration themselves
107 return !WARN_ON(opp_table->clk_count > 1); in assert_single_clk()
116 return opp_table->clk_count > index; in assert_clk_index()
125 return opp_table->path_count > index; in assert_bandwidth_index()
129 * dev_pm_opp_get_voltage() - Gets the voltage corresponding to an opp
130 * @opp: opp for which voltage has to be returned for
132 * Return: voltage in micro volt corresponding to the opp, else
137 unsigned long dev_pm_opp_get_voltage(struct dev_pm_opp *opp) in dev_pm_opp_get_voltage() argument
139 if (IS_ERR_OR_NULL(opp)) { in dev_pm_opp_get_voltage()
144 return opp->supplies[0].u_volt; in dev_pm_opp_get_voltage()
149 * dev_pm_opp_get_supplies() - Gets the supply information corresponding to an opp
150 * @opp: opp for which voltage has to be returned for
159 int dev_pm_opp_get_supplies(struct dev_pm_opp *opp, in dev_pm_opp_get_supplies() argument
162 if (IS_ERR_OR_NULL(opp) || !supplies) { in dev_pm_opp_get_supplies()
164 return -EINVAL; in dev_pm_opp_get_supplies()
167 memcpy(supplies, opp->supplies, in dev_pm_opp_get_supplies()
168 sizeof(*supplies) * opp->opp_table->regulator_count); in dev_pm_opp_get_supplies()
174 * dev_pm_opp_get_power() - Gets the power corresponding to an opp
175 * @opp: opp for which power has to be returned for
177 * Return: power in micro watt corresponding to the opp, else
182 unsigned long dev_pm_opp_get_power(struct dev_pm_opp *opp) in dev_pm_opp_get_power() argument
187 if (IS_ERR_OR_NULL(opp)) { in dev_pm_opp_get_power()
191 for (i = 0; i < opp->opp_table->regulator_count; i++) in dev_pm_opp_get_power()
192 opp_power += opp->supplies[i].u_watt; in dev_pm_opp_get_power()
199 * dev_pm_opp_get_freq_indexed() - Gets the frequency corresponding to an
200 * available opp with specified index
201 * @opp: opp for which frequency has to be returned for
202 * @index: index of the frequency within the required opp
204 * Return: frequency in hertz corresponding to the opp with specified index,
207 unsigned long dev_pm_opp_get_freq_indexed(struct dev_pm_opp *opp, u32 index) in dev_pm_opp_get_freq_indexed() argument
209 if (IS_ERR_OR_NULL(opp) || index >= opp->opp_table->clk_count) { in dev_pm_opp_get_freq_indexed()
214 return opp->rates[index]; in dev_pm_opp_get_freq_indexed()
219 * dev_pm_opp_get_level() - Gets the level corresponding to an available opp
220 * @opp: opp for which level value has to be returned for
222 * Return: level read from device tree corresponding to the opp, else
225 unsigned int dev_pm_opp_get_level(struct dev_pm_opp *opp) in dev_pm_opp_get_level() argument
227 if (IS_ERR_OR_NULL(opp) || !opp->available) { in dev_pm_opp_get_level()
232 return opp->level; in dev_pm_opp_get_level()
237 * dev_pm_opp_get_required_pstate() - Gets the required performance state
238 * corresponding to an available opp
239 * @opp: opp for which performance state has to be returned for
240 * @index: index of the required opp
243 * required opp, else return 0.
245 unsigned int dev_pm_opp_get_required_pstate(struct dev_pm_opp *opp, in dev_pm_opp_get_required_pstate() argument
248 if (IS_ERR_OR_NULL(opp) || !opp->available || in dev_pm_opp_get_required_pstate()
249 index >= opp->opp_table->required_opp_count) { in dev_pm_opp_get_required_pstate()
254 /* required-opps not fully initialized yet */ in dev_pm_opp_get_required_pstate()
255 if (lazy_linking_pending(opp->opp_table)) in dev_pm_opp_get_required_pstate()
258 /* The required OPP table must belong to a genpd */ in dev_pm_opp_get_required_pstate()
259 if (unlikely(!opp->opp_table->required_opp_tables[index]->is_genpd)) { in dev_pm_opp_get_required_pstate()
264 return opp->required_opps[index]->level; in dev_pm_opp_get_required_pstate()
269 * dev_pm_opp_is_turbo() - Returns if opp is turbo OPP or not
270 * @opp: opp for which turbo mode is being verified
276 * Return: true if opp is turbo opp, else false.
278 bool dev_pm_opp_is_turbo(struct dev_pm_opp *opp) in dev_pm_opp_is_turbo() argument
280 if (IS_ERR_OR_NULL(opp) || !opp->available) { in dev_pm_opp_is_turbo()
285 return opp->turbo; in dev_pm_opp_is_turbo()
290 * dev_pm_opp_get_max_clock_latency() - Get max clock latency in nanoseconds
304 clock_latency_ns = opp_table->clock_latency_ns_max; in dev_pm_opp_get_max_clock_latency()
313 * dev_pm_opp_get_max_volt_latency() - Get max voltage latency in nanoseconds
321 struct dev_pm_opp *opp; in dev_pm_opp_get_max_volt_latency() local
335 if (!opp_table->regulators) in dev_pm_opp_get_max_volt_latency()
338 count = opp_table->regulator_count; in dev_pm_opp_get_max_volt_latency()
344 mutex_lock(&opp_table->lock); in dev_pm_opp_get_max_volt_latency()
350 list_for_each_entry(opp, &opp_table->opp_list, node) { in dev_pm_opp_get_max_volt_latency()
351 if (!opp->available) in dev_pm_opp_get_max_volt_latency()
354 if (opp->supplies[i].u_volt_min < uV[i].min) in dev_pm_opp_get_max_volt_latency()
355 uV[i].min = opp->supplies[i].u_volt_min; in dev_pm_opp_get_max_volt_latency()
356 if (opp->supplies[i].u_volt_max > uV[i].max) in dev_pm_opp_get_max_volt_latency()
357 uV[i].max = opp->supplies[i].u_volt_max; in dev_pm_opp_get_max_volt_latency()
361 mutex_unlock(&opp_table->lock); in dev_pm_opp_get_max_volt_latency()
368 reg = opp_table->regulators[i]; in dev_pm_opp_get_max_volt_latency()
383 * dev_pm_opp_get_max_transition_latency() - Get max transition latency in
388 * switch from one OPP to other.
398 * dev_pm_opp_get_suspend_opp_freq() - Get frequency of suspend opp in Hz
401 * Return: This function returns the frequency of the OPP marked as suspend_opp
413 if (opp_table->suspend_opp && opp_table->suspend_opp->available) in dev_pm_opp_get_suspend_opp_freq()
414 freq = dev_pm_opp_get_freq(opp_table->suspend_opp); in dev_pm_opp_get_suspend_opp_freq()
424 struct dev_pm_opp *opp; in _get_opp_count() local
427 mutex_lock(&opp_table->lock); in _get_opp_count()
429 list_for_each_entry(opp, &opp_table->opp_list, node) { in _get_opp_count()
430 if (opp->available) in _get_opp_count()
434 mutex_unlock(&opp_table->lock); in _get_opp_count()
440 * dev_pm_opp_get_opp_count() - Get number of opps available in the opp table
454 dev_dbg(dev, "%s: OPP table not found (%d)\n", in dev_pm_opp_get_opp_count()
467 static unsigned long _read_freq(struct dev_pm_opp *opp, int index) in _read_freq() argument
469 return opp->rates[index]; in _read_freq()
472 static unsigned long _read_level(struct dev_pm_opp *opp, int index) in _read_level() argument
474 return opp->level; in _read_level()
477 static unsigned long _read_bw(struct dev_pm_opp *opp, int index) in _read_bw() argument
479 return opp->bandwidth[index].peak; in _read_bw()
483 static bool _compare_exact(struct dev_pm_opp **opp, struct dev_pm_opp *temp_opp, in _compare_exact() argument
487 *opp = temp_opp; in _compare_exact()
494 static bool _compare_ceil(struct dev_pm_opp **opp, struct dev_pm_opp *temp_opp, in _compare_ceil() argument
498 *opp = temp_opp; in _compare_ceil()
505 static bool _compare_floor(struct dev_pm_opp **opp, struct dev_pm_opp *temp_opp, in _compare_floor() argument
511 *opp = temp_opp; in _compare_floor()
518 unsigned long (*read)(struct dev_pm_opp *opp, int index), in _opp_table_find_key() argument
519 bool (*compare)(struct dev_pm_opp **opp, struct dev_pm_opp *temp_opp, in _opp_table_find_key() argument
523 struct dev_pm_opp *temp_opp, *opp = ERR_PTR(-ERANGE); in _opp_table_find_key() local
527 return ERR_PTR(-EINVAL); in _opp_table_find_key()
529 mutex_lock(&opp_table->lock); in _opp_table_find_key()
531 list_for_each_entry(temp_opp, &opp_table->opp_list, node) { in _opp_table_find_key()
532 if (temp_opp->available == available) { in _opp_table_find_key()
533 if (compare(&opp, temp_opp, read(temp_opp, index), *key)) in _opp_table_find_key()
538 /* Increment the reference count of OPP */ in _opp_table_find_key()
539 if (!IS_ERR(opp)) { in _opp_table_find_key()
540 *key = read(opp, index); in _opp_table_find_key()
541 dev_pm_opp_get(opp); in _opp_table_find_key()
544 mutex_unlock(&opp_table->lock); in _opp_table_find_key()
546 return opp; in _opp_table_find_key()
551 unsigned long (*read)(struct dev_pm_opp *opp, int index), in _find_key() argument
552 bool (*compare)(struct dev_pm_opp **opp, struct dev_pm_opp *temp_opp, in _find_key() argument
557 struct dev_pm_opp *opp; in _find_key() local
561 dev_err(dev, "%s: OPP table not found (%ld)\n", __func__, in _find_key()
566 opp = _opp_table_find_key(opp_table, key, index, available, read, in _find_key()
571 return opp; in _find_key()
576 unsigned long (*read)(struct dev_pm_opp *opp, int index), in _find_key_exact() argument
589 unsigned long (*read)(struct dev_pm_opp *opp, int index), in _opp_table_find_key_ceil() argument
598 unsigned long (*read)(struct dev_pm_opp *opp, int index), in _find_key_ceil() argument
607 unsigned long (*read)(struct dev_pm_opp *opp, int index), in _find_key_floor() argument
615 * dev_pm_opp_find_freq_exact() - search for an exact frequency
618 * @available: true/false - match for available opp
620 * Return: Searches for exact match in the opp table and returns pointer to the
621 * matching opp if found, else returns ERR_PTR in case of error and should
628 * match is for exact matching frequency and is available in the stored OPP
631 * This provides a mechanism to enable an opp which is not available currently
634 * The callers are required to call dev_pm_opp_put() for the returned OPP after
646 * dev_pm_opp_find_freq_exact_indexed() - Search for an exact freq for the
651 * @available: true/false - match for available opp
653 * Search for the matching exact OPP for the clock corresponding to the
656 * Return: matching *opp , else returns ERR_PTR in case of error and should be
662 * The callers are required to call dev_pm_opp_put() for the returned OPP after
682 * dev_pm_opp_find_freq_ceil() - Search for an rounded ceil freq
686 * Search for the matching ceil *available* OPP from a starting freq
689 * Return: matching *opp and refreshes *freq accordingly, else returns
696 * The callers are required to call dev_pm_opp_put() for the returned OPP after
707 * dev_pm_opp_find_freq_ceil_indexed() - Search for a rounded ceil freq for the
713 * Search for the matching ceil *available* OPP for the clock corresponding to
716 * Return: matching *opp and refreshes *freq accordingly, else returns
723 * The callers are required to call dev_pm_opp_put() for the returned OPP after
736 * dev_pm_opp_find_freq_floor() - Search for a rounded floor freq
740 * Search for the matching floor *available* OPP from a starting freq
743 * Return: matching *opp and refreshes *freq accordingly, else returns
750 * The callers are required to call dev_pm_opp_put() for the returned OPP after
761 * dev_pm_opp_find_freq_floor_indexed() - Search for a rounded floor freq for the
767 * Search for the matching floor *available* OPP for the clock corresponding to
770 * Return: matching *opp and refreshes *freq accordingly, else returns
777 * The callers are required to call dev_pm_opp_put() for the returned OPP after
789 * dev_pm_opp_find_level_exact() - search for an exact level
793 * Return: Searches for exact match in the opp table and returns pointer to the
794 * matching opp if found, else returns ERR_PTR in case of error and should
800 * The callers are required to call dev_pm_opp_put() for the returned OPP after
811 * dev_pm_opp_find_level_ceil() - search for an rounded up level
815 * Return: Searches for rounded up match in the opp table and returns pointer
816 * to the matching opp if found, else returns ERR_PTR in case of error and
822 * The callers are required to call dev_pm_opp_put() for the returned OPP after
829 struct dev_pm_opp *opp; in dev_pm_opp_find_level_ceil() local
831 opp = _find_key_ceil(dev, &temp, 0, true, _read_level, NULL); in dev_pm_opp_find_level_ceil()
833 return opp; in dev_pm_opp_find_level_ceil()
838 * dev_pm_opp_find_bw_ceil() - Search for a rounded ceil bandwidth
843 * Search for the matching floor *available* OPP from a starting bandwidth
846 * Return: matching *opp and refreshes *bw accordingly, else returns
853 * The callers are required to call dev_pm_opp_put() for the returned OPP after
860 struct dev_pm_opp *opp; in dev_pm_opp_find_bw_ceil() local
862 opp = _find_key_ceil(dev, &temp, index, true, _read_bw, in dev_pm_opp_find_bw_ceil()
865 return opp; in dev_pm_opp_find_bw_ceil()
870 * dev_pm_opp_find_bw_floor() - Search for a rounded floor bandwidth
875 * Search for the matching floor *available* OPP from a starting bandwidth
878 * Return: matching *opp and refreshes *bw accordingly, else returns
885 * The callers are required to call dev_pm_opp_put() for the returned OPP after
892 struct dev_pm_opp *opp; in dev_pm_opp_find_bw_floor() local
894 opp = _find_key_floor(dev, &temp, index, true, _read_bw, in dev_pm_opp_find_bw_floor()
897 return opp; in dev_pm_opp_find_bw_floor()
914 supply->u_volt_min, supply->u_volt, supply->u_volt_max); in _set_opp_voltage()
916 ret = regulator_set_voltage_triplet(reg, supply->u_volt_min, in _set_opp_voltage()
917 supply->u_volt, supply->u_volt_max); in _set_opp_voltage()
920 __func__, supply->u_volt_min, supply->u_volt, in _set_opp_voltage()
921 supply->u_volt_max, ret); in _set_opp_voltage()
928 struct dev_pm_opp *opp, void *data, bool scaling_down) in _opp_config_clk_single() argument
934 /* One of target and opp must be available */ in _opp_config_clk_single()
937 } else if (opp) { in _opp_config_clk_single()
938 freq = opp->rates[0]; in _opp_config_clk_single()
940 WARN_ON(1); in _opp_config_clk_single()
941 return -EINVAL; in _opp_config_clk_single()
944 ret = clk_set_rate(opp_table->clk, freq); in _opp_config_clk_single()
949 opp_table->rate_clk_single = freq; in _opp_config_clk_single()
960 struct opp_table *opp_table, struct dev_pm_opp *opp, void *data, in dev_pm_opp_config_clks_simple() argument
966 for (i = opp_table->clk_count - 1; i >= 0; i--) { in dev_pm_opp_config_clks_simple()
967 ret = clk_set_rate(opp_table->clks[i], opp->rates[i]); in dev_pm_opp_config_clks_simple()
975 for (i = 0; i < opp_table->clk_count; i++) { in dev_pm_opp_config_clks_simple()
976 ret = clk_set_rate(opp_table->clks[i], opp->rates[i]); in dev_pm_opp_config_clks_simple()
997 if (WARN_ON(count > 1)) { in _opp_config_regulator_single()
999 return -EINVAL; in _opp_config_regulator_single()
1002 ret = _set_opp_voltage(dev, reg, new_opp->supplies); in _opp_config_regulator_single()
1008 * some boot-enabled regulators. in _opp_config_regulator_single()
1010 if (unlikely(!new_opp->opp_table->enabled)) { in _opp_config_regulator_single()
1020 struct dev_pm_opp *opp, struct device *dev) in _set_opp_bw() argument
1025 if (!opp_table->paths) in _set_opp_bw()
1028 for (i = 0; i < opp_table->path_count; i++) { in _set_opp_bw()
1029 if (!opp) { in _set_opp_bw()
1033 avg = opp->bandwidth[i].avg; in _set_opp_bw()
1034 peak = opp->bandwidth[i].peak; in _set_opp_bw()
1036 ret = icc_set_bw(opp_table->paths[i], avg, peak); in _set_opp_bw()
1039 opp ? "set" : "remove", i, ret); in _set_opp_bw()
1048 struct dev_pm_opp *opp, int i) in _set_performance_state() argument
1050 unsigned int pstate = likely(opp) ? opp->required_opps[i]->level: 0; in _set_performance_state()
1066 struct opp_table *opp_table, struct dev_pm_opp *opp, bool scaling_down) in _opp_set_required_opps_generic() argument
1068 dev_err(dev, "setting required-opps isn't supported for non-genpd devices\n"); in _opp_set_required_opps_generic()
1069 return -ENOENT; in _opp_set_required_opps_generic()
1073 struct opp_table *opp_table, struct dev_pm_opp *opp, bool scaling_down) in _opp_set_required_opps_genpd() argument
1076 opp_table->genpd_virt_devs ? opp_table->genpd_virt_devs : &dev; in _opp_set_required_opps_genpd()
1083 mutex_lock(&opp_table->genpd_virt_dev_lock); in _opp_set_required_opps_genpd()
1087 for (i = 0; i < opp_table->required_opp_count; i++) { in _opp_set_required_opps_genpd()
1088 ret = _set_performance_state(dev, genpd_virt_devs[i], opp, i); in _opp_set_required_opps_genpd()
1093 for (i = opp_table->required_opp_count - 1; i >= 0; i--) { in _opp_set_required_opps_genpd()
1094 ret = _set_performance_state(dev, genpd_virt_devs[i], opp, i); in _opp_set_required_opps_genpd()
1100 mutex_unlock(&opp_table->genpd_virt_dev_lock); in _opp_set_required_opps_genpd()
1107 struct dev_pm_opp *opp, bool up) in _set_required_opps() argument
1109 /* required-opps not fully initialized yet */ in _set_required_opps()
1111 return -EBUSY; in _set_required_opps()
1113 if (opp_table->set_required_opps) in _set_required_opps()
1114 return opp_table->set_required_opps(dev, opp_table, opp, up); in _set_required_opps()
1123 if (opp_table->set_required_opps) in _update_set_required_opps()
1127 if (opp_table->required_opp_tables[0]->is_genpd) in _update_set_required_opps()
1128 opp_table->set_required_opps = _opp_set_required_opps_genpd; in _update_set_required_opps()
1130 opp_table->set_required_opps = _opp_set_required_opps_generic; in _update_set_required_opps()
1135 struct dev_pm_opp *opp = ERR_PTR(-ENODEV); in _find_current_opp() local
1138 if (!IS_ERR(opp_table->clk)) { in _find_current_opp()
1139 freq = clk_get_rate(opp_table->clk); in _find_current_opp()
1140 opp = _find_freq_ceil(opp_table, &freq); in _find_current_opp()
1144 * Unable to find the current OPP ? Pick the first from the list since in _find_current_opp()
1148 if (IS_ERR(opp)) { in _find_current_opp()
1149 mutex_lock(&opp_table->lock); in _find_current_opp()
1150 opp = list_first_entry(&opp_table->opp_list, struct dev_pm_opp, node); in _find_current_opp()
1151 dev_pm_opp_get(opp); in _find_current_opp()
1152 mutex_unlock(&opp_table->lock); in _find_current_opp()
1155 opp_table->current_opp = opp; in _find_current_opp()
1162 if (!opp_table->enabled) in _disable_opp_table()
1167 * have OPP table for the device, while others don't and in _disable_opp_table()
1177 if (opp_table->regulators) in _disable_opp_table()
1178 regulator_disable(opp_table->regulators[0]); in _disable_opp_table()
1182 opp_table->enabled = false; in _disable_opp_table()
1187 struct dev_pm_opp *opp, void *clk_data, bool forced) in _set_opp() argument
1192 if (unlikely(!opp)) in _set_opp()
1195 /* Find the currently set OPP if we don't know already */ in _set_opp()
1196 if (unlikely(!opp_table->current_opp)) in _set_opp()
1199 old_opp = opp_table->current_opp; in _set_opp()
1202 if (!forced && old_opp == opp && opp_table->enabled) { in _set_opp()
1207 dev_dbg(dev, "%s: switching OPP: Freq %lu -> %lu Hz, Level %u -> %u, Bw %u -> %u\n", in _set_opp()
1208 __func__, old_opp->rates[0], opp->rates[0], old_opp->level, in _set_opp()
1209 opp->level, old_opp->bandwidth ? old_opp->bandwidth[0].peak : 0, in _set_opp()
1210 opp->bandwidth ? opp->bandwidth[0].peak : 0); in _set_opp()
1212 scaling_down = _opp_compare_key(opp_table, old_opp, opp); in _set_opp()
1213 if (scaling_down == -1) in _set_opp()
1218 ret = _set_required_opps(dev, opp_table, opp, true); in _set_opp()
1224 ret = _set_opp_bw(opp_table, opp, dev); in _set_opp()
1230 if (opp_table->config_regulators) { in _set_opp()
1231 ret = opp_table->config_regulators(dev, old_opp, opp, in _set_opp()
1232 opp_table->regulators, in _set_opp()
1233 opp_table->regulator_count); in _set_opp()
1242 if (opp_table->config_clks) { in _set_opp()
1243 ret = opp_table->config_clks(dev, opp_table, opp, clk_data, scaling_down); in _set_opp()
1250 if (opp_table->config_regulators) { in _set_opp()
1251 ret = opp_table->config_regulators(dev, old_opp, opp, in _set_opp()
1252 opp_table->regulators, in _set_opp()
1253 opp_table->regulator_count); in _set_opp()
1261 ret = _set_opp_bw(opp_table, opp, dev); in _set_opp()
1267 ret = _set_required_opps(dev, opp_table, opp, false); in _set_opp()
1274 opp_table->enabled = true; in _set_opp()
1278 dev_pm_opp_get(opp); in _set_opp()
1279 opp_table->current_opp = opp; in _set_opp()
1285 * dev_pm_opp_set_rate() - Configure new OPP based on frequency
1289 * This configures the power-supplies to the levels specified by the OPP
1292 * provided by the opp, should have already rounded to the target OPP's
1299 struct dev_pm_opp *opp = NULL; in dev_pm_opp_set_rate() local
1305 dev_err(dev, "%s: device's opp table doesn't exist\n", __func__); in dev_pm_opp_set_rate()
1311 * For IO devices which require an OPP on some platforms/SoCs in dev_pm_opp_set_rate()
1313 * we look for empty OPP tables with just a clock handle and in dev_pm_opp_set_rate()
1318 ret = opp_table->config_clks(dev, opp_table, NULL, in dev_pm_opp_set_rate()
1323 freq = clk_round_rate(opp_table->clk, target_freq); in dev_pm_opp_set_rate()
1329 * frequencies than the OPP table, don't update the frequency we in dev_pm_opp_set_rate()
1333 opp = _find_freq_ceil(opp_table, &temp_freq); in dev_pm_opp_set_rate()
1334 if (IS_ERR(opp)) { in dev_pm_opp_set_rate()
1335 ret = PTR_ERR(opp); in dev_pm_opp_set_rate()
1336 dev_err(dev, "%s: failed to find OPP for freq %lu (%d)\n", in dev_pm_opp_set_rate()
1342 * An OPP entry specifies the highest frequency at which other in dev_pm_opp_set_rate()
1343 * properties of the OPP entry apply. Even if the new OPP is in dev_pm_opp_set_rate()
1348 forced = opp_table->rate_clk_single != freq; in dev_pm_opp_set_rate()
1351 ret = _set_opp(dev, opp_table, opp, &freq, forced); in dev_pm_opp_set_rate()
1354 dev_pm_opp_put(opp); in dev_pm_opp_set_rate()
1363 * dev_pm_opp_set_opp() - Configure device for OPP
1365 * @opp: OPP to set to
1367 * This configures the device based on the properties of the OPP passed to this
1372 int dev_pm_opp_set_opp(struct device *dev, struct dev_pm_opp *opp) in dev_pm_opp_set_opp() argument
1379 dev_err(dev, "%s: device opp doesn't exist\n", __func__); in dev_pm_opp_set_opp()
1383 ret = _set_opp(dev, opp_table, opp, NULL, false); in dev_pm_opp_set_opp()
1390 /* OPP-dev Helpers */
1395 list_del(&opp_dev->node); in _remove_opp_dev()
1408 /* Initialize opp-dev */ in _add_opp_dev()
1409 opp_dev->dev = dev; in _add_opp_dev()
1411 mutex_lock(&opp_table->lock); in _add_opp_dev()
1412 list_add(&opp_dev->node, &opp_table->dev_list); in _add_opp_dev()
1413 mutex_unlock(&opp_table->lock); in _add_opp_dev()
1428 * Allocate a new OPP table. In the infrequent case where a new in _allocate_opp_table()
1433 return ERR_PTR(-ENOMEM); in _allocate_opp_table()
1435 mutex_init(&opp_table->lock); in _allocate_opp_table()
1436 mutex_init(&opp_table->genpd_virt_dev_lock); in _allocate_opp_table()
1437 INIT_LIST_HEAD(&opp_table->dev_list); in _allocate_opp_table()
1438 INIT_LIST_HEAD(&opp_table->lazy); in _allocate_opp_table()
1440 opp_table->clk = ERR_PTR(-ENODEV); in _allocate_opp_table()
1443 opp_table->regulator_count = -1; in _allocate_opp_table()
1447 ret = -ENOMEM; in _allocate_opp_table()
1456 if (ret == -EPROBE_DEFER) in _allocate_opp_table()
1463 BLOCKING_INIT_NOTIFIER_HEAD(&opp_table->head); in _allocate_opp_table()
1464 INIT_LIST_HEAD(&opp_table->opp_list); in _allocate_opp_table()
1465 kref_init(&opp_table->kref); in _allocate_opp_table()
1472 mutex_destroy(&opp_table->genpd_virt_dev_lock); in _allocate_opp_table()
1473 mutex_destroy(&opp_table->lock); in _allocate_opp_table()
1481 kref_get(&opp_table->kref); in _get_opp_table_kref()
1494 if (!getclk || IS_ERR(opp_table) || !IS_ERR(opp_table->clk) || in _update_opp_table_clk()
1495 opp_table->clks) in _update_opp_table_clk()
1499 opp_table->clk = clk_get(dev, NULL); in _update_opp_table_clk()
1501 ret = PTR_ERR_OR_ZERO(opp_table->clk); in _update_opp_table_clk()
1503 opp_table->config_clks = _opp_config_clk_single; in _update_opp_table_clk()
1504 opp_table->clk_count = 1; in _update_opp_table_clk()
1508 if (ret == -ENOENT) { in _update_opp_table_clk()
1510 * There are few platforms which don't want the OPP core to in _update_opp_table_clk()
1513 * contains a valid clk entry. The OPP nodes in DT may still in _update_opp_table_clk()
1514 * contain "opp-hz" property though, which we need to parse and in _update_opp_table_clk()
1515 * allow the platform to find an OPP based on freq later on. in _update_opp_table_clk()
1518 * i.e. make the clk_count 1, which lets us allocate space for in _update_opp_table_clk()
1519 * frequency in opp->rates and also parse the entries in DT. in _update_opp_table_clk()
1521 opp_table->clk_count = 1; in _update_opp_table_clk()
1534 * We need to make sure that the OPP table for a device doesn't get added twice,
1542 * indirect users of OPP core.
1546 * of adding an OPP table and others should wait for it to finish.
1561 * The opp_tables list or an OPP table's dev_list is getting updated by in _add_opp_table_indexed()
1579 opp_table = ERR_PTR(-ENOMEM); in _add_opp_table_indexed()
1588 list_add(&opp_table->node, &opp_tables); in _add_opp_table_indexed()
1617 list_del(&opp_table->node); in _opp_table_kref_release()
1620 if (opp_table->current_opp) in _opp_table_kref_release()
1621 dev_pm_opp_put(opp_table->current_opp); in _opp_table_kref_release()
1626 if (!IS_ERR(opp_table->clk)) in _opp_table_kref_release()
1627 clk_put(opp_table->clk); in _opp_table_kref_release()
1629 if (opp_table->paths) { in _opp_table_kref_release()
1630 for (i = 0; i < opp_table->path_count; i++) in _opp_table_kref_release()
1631 icc_put(opp_table->paths[i]); in _opp_table_kref_release()
1632 kfree(opp_table->paths); in _opp_table_kref_release()
1635 WARN_ON(!list_empty(&opp_table->opp_list)); in _opp_table_kref_release()
1637 list_for_each_entry_safe(opp_dev, temp, &opp_table->dev_list, node) in _opp_table_kref_release()
1640 mutex_destroy(&opp_table->genpd_virt_dev_lock); in _opp_table_kref_release()
1641 mutex_destroy(&opp_table->lock); in _opp_table_kref_release()
1647 kref_put_mutex(&opp_table->kref, _opp_table_kref_release, in dev_pm_opp_put_opp_table()
1652 void _opp_free(struct dev_pm_opp *opp) in _opp_free() argument
1654 kfree(opp); in _opp_free()
1659 struct dev_pm_opp *opp = container_of(kref, struct dev_pm_opp, kref); in _opp_kref_release() local
1660 struct opp_table *opp_table = opp->opp_table; in _opp_kref_release()
1662 list_del(&opp->node); in _opp_kref_release()
1663 mutex_unlock(&opp_table->lock); in _opp_kref_release()
1669 blocking_notifier_call_chain(&opp_table->head, OPP_EVENT_REMOVE, opp); in _opp_kref_release()
1670 _of_clear_opp(opp_table, opp); in _opp_kref_release()
1671 opp_debug_remove_one(opp); in _opp_kref_release()
1672 kfree(opp); in _opp_kref_release()
1675 void dev_pm_opp_get(struct dev_pm_opp *opp) in dev_pm_opp_get() argument
1677 kref_get(&opp->kref); in dev_pm_opp_get()
1680 void dev_pm_opp_put(struct dev_pm_opp *opp) in dev_pm_opp_put() argument
1682 kref_put_mutex(&opp->kref, _opp_kref_release, &opp->opp_table->lock); in dev_pm_opp_put()
1687 * dev_pm_opp_remove() - Remove an OPP from OPP table
1689 * @freq: OPP to remove with matching 'freq'
1691 * This function removes an opp from the opp table.
1695 struct dev_pm_opp *opp = NULL, *iter; in dev_pm_opp_remove() local
1705 mutex_lock(&opp_table->lock); in dev_pm_opp_remove()
1707 list_for_each_entry(iter, &opp_table->opp_list, node) { in dev_pm_opp_remove()
1708 if (iter->rates[0] == freq) { in dev_pm_opp_remove()
1709 opp = iter; in dev_pm_opp_remove()
1714 mutex_unlock(&opp_table->lock); in dev_pm_opp_remove()
1716 if (opp) { in dev_pm_opp_remove()
1717 dev_pm_opp_put(opp); in dev_pm_opp_remove()
1722 dev_warn(dev, "%s: Couldn't find OPP with freq: %lu\n", in dev_pm_opp_remove()
1735 struct dev_pm_opp *opp = NULL, *temp; in _opp_get_next() local
1737 mutex_lock(&opp_table->lock); in _opp_get_next()
1738 list_for_each_entry(temp, &opp_table->opp_list, node) { in _opp_get_next()
1740 * Refcount must be dropped only once for each OPP by OPP core, in _opp_get_next()
1743 if (!temp->removed && dynamic == temp->dynamic) { in _opp_get_next()
1744 opp = temp; in _opp_get_next()
1749 mutex_unlock(&opp_table->lock); in _opp_get_next()
1750 return opp; in _opp_get_next()
1756 * called without the opp_table->lock held.
1760 struct dev_pm_opp *opp; in _opp_remove_all() local
1762 while ((opp = _opp_get_next(opp_table, dynamic))) { in _opp_remove_all()
1763 opp->removed = true; in _opp_remove_all()
1764 dev_pm_opp_put(opp); in _opp_remove_all()
1774 mutex_lock(&opp_table->lock); in _opp_remove_all_static()
1776 if (!opp_table->parsed_static_opps) { in _opp_remove_all_static()
1777 mutex_unlock(&opp_table->lock); in _opp_remove_all_static()
1781 if (--opp_table->parsed_static_opps) { in _opp_remove_all_static()
1782 mutex_unlock(&opp_table->lock); in _opp_remove_all_static()
1786 mutex_unlock(&opp_table->lock); in _opp_remove_all_static()
1793 * dev_pm_opp_remove_all_dynamic() - Remove all dynamically created OPPs
1796 * This function removes all dynamically created OPPs from the opp table.
1815 struct dev_pm_opp *opp; in _opp_allocate() local
1819 supply_count = opp_table->regulator_count > 0 ? in _opp_allocate()
1820 opp_table->regulator_count : 1; in _opp_allocate()
1821 supply_size = sizeof(*opp->supplies) * supply_count; in _opp_allocate()
1822 clk_size = sizeof(*opp->rates) * opp_table->clk_count; in _opp_allocate()
1823 icc_size = sizeof(*opp->bandwidth) * opp_table->path_count; in _opp_allocate()
1825 /* allocate new OPP node and supplies structures */ in _opp_allocate()
1826 opp = kzalloc(sizeof(*opp) + supply_size + clk_size + icc_size, GFP_KERNEL); in _opp_allocate()
1827 if (!opp) in _opp_allocate()
1830 /* Put the supplies, bw and clock at the end of the OPP structure */ in _opp_allocate()
1831 opp->supplies = (struct dev_pm_opp_supply *)(opp + 1); in _opp_allocate()
1833 opp->rates = (unsigned long *)(opp->supplies + supply_count); in _opp_allocate()
1836 opp->bandwidth = (struct dev_pm_opp_icc_bw *)(opp->rates + opp_table->clk_count); in _opp_allocate()
1838 INIT_LIST_HEAD(&opp->node); in _opp_allocate()
1840 return opp; in _opp_allocate()
1843 static bool _opp_supported_by_regulators(struct dev_pm_opp *opp, in _opp_supported_by_regulators() argument
1849 if (!opp_table->regulators) in _opp_supported_by_regulators()
1852 for (i = 0; i < opp_table->regulator_count; i++) { in _opp_supported_by_regulators()
1853 reg = opp_table->regulators[i]; in _opp_supported_by_regulators()
1856 opp->supplies[i].u_volt_min, in _opp_supported_by_regulators()
1857 opp->supplies[i].u_volt_max)) { in _opp_supported_by_regulators()
1858 pr_warn("%s: OPP minuV: %lu maxuV: %lu, not supported by regulator\n", in _opp_supported_by_regulators()
1859 __func__, opp->supplies[i].u_volt_min, in _opp_supported_by_regulators()
1860 opp->supplies[i].u_volt_max); in _opp_supported_by_regulators()
1873 for (i = 0; i < opp_table->clk_count; i++) { in _opp_compare_rate()
1874 if (opp1->rates[i] != opp2->rates[i]) in _opp_compare_rate()
1875 return opp1->rates[i] < opp2->rates[i] ? -1 : 1; in _opp_compare_rate()
1887 for (i = 0; i < opp_table->path_count; i++) { in _opp_compare_bw()
1888 if (opp1->bandwidth[i].peak != opp2->bandwidth[i].peak) in _opp_compare_bw()
1889 return opp1->bandwidth[i].peak < opp2->bandwidth[i].peak ? -1 : 1; in _opp_compare_bw()
1899 * 1: opp1 > opp2
1900 * -1: opp1 < opp2
1915 if (opp1->level != opp2->level) in _opp_compare_key()
1916 return opp1->level < opp2->level ? -1 : 1; in _opp_compare_key()
1926 struct dev_pm_opp *opp; in _opp_is_duplicate() local
1930 * Insert new OPP in order of increasing frequency and discard if in _opp_is_duplicate()
1933 * Need to use &opp_table->opp_list in the condition part of the 'for' in _opp_is_duplicate()
1937 list_for_each_entry(opp, &opp_table->opp_list, node) { in _opp_is_duplicate()
1938 opp_cmp = _opp_compare_key(opp_table, new_opp, opp); in _opp_is_duplicate()
1940 *head = &opp->node; in _opp_is_duplicate()
1949 __func__, opp->rates[0], opp->supplies[0].u_volt, in _opp_is_duplicate()
1950 opp->available, new_opp->rates[0], in _opp_is_duplicate()
1951 new_opp->supplies[0].u_volt, new_opp->available); in _opp_is_duplicate()
1954 return opp->available && in _opp_is_duplicate()
1955 new_opp->supplies[0].u_volt == opp->supplies[0].u_volt ? -EBUSY : -EEXIST; in _opp_is_duplicate()
1961 void _required_opps_available(struct dev_pm_opp *opp, int count) in _required_opps_available() argument
1966 if (opp->required_opps[i]->available) in _required_opps_available()
1969 opp->available = false; in _required_opps_available()
1970 pr_warn("%s: OPP not supported by required OPP %pOF (%lu)\n", in _required_opps_available()
1971 __func__, opp->required_opps[i]->np, opp->rates[0]); in _required_opps_available()
1979 * -EBUSY: For OPP with same freq/volt and is available. The callers of
1980 * _opp_add() must return 0 if they receive -EBUSY from it. This is to make
1982 * kernel try to initialize the OPP table.
1983 * -EEXIST: For OPP with same freq but different volt or is unavailable. This
1992 mutex_lock(&opp_table->lock); in _opp_add()
1993 head = &opp_table->opp_list; in _opp_add()
1997 mutex_unlock(&opp_table->lock); in _opp_add()
2001 list_add(&new_opp->node, head); in _opp_add()
2002 mutex_unlock(&opp_table->lock); in _opp_add()
2004 new_opp->opp_table = opp_table; in _opp_add()
2005 kref_init(&new_opp->kref); in _opp_add()
2010 new_opp->available = false; in _opp_add()
2011 dev_warn(dev, "%s: OPP not supported by regulators (%lu)\n", in _opp_add()
2012 __func__, new_opp->rates[0]); in _opp_add()
2015 /* required-opps not fully initialized yet */ in _opp_add()
2019 _required_opps_available(new_opp, opp_table->required_opp_count); in _opp_add()
2025 * _opp_add_v1() - Allocate a OPP based on v1 bindings.
2026 * @opp_table: OPP table
2028 * @freq: Frequency in Hz for this OPP
2029 * @u_volt: Voltage in uVolts for this OPP
2032 * This function adds an opp definition to the opp table and returns status.
2033 * The opp is made available by default and it can be controlled using
2041 * Duplicate OPPs (both freq and volt are same) and opp->available
2042 * -EEXIST Freq are same and volt are different OR
2043 * Duplicate OPPs (both freq and volt are same) and !opp->available
2044 * -ENOMEM Memory allocation failure
2054 return -EINVAL; in _opp_add_v1()
2058 return -ENOMEM; in _opp_add_v1()
2060 /* populate the opp table */ in _opp_add_v1()
2061 new_opp->rates[0] = freq; in _opp_add_v1()
2062 tol = u_volt * opp_table->voltage_tolerance_v1 / 100; in _opp_add_v1()
2063 new_opp->supplies[0].u_volt = u_volt; in _opp_add_v1()
2064 new_opp->supplies[0].u_volt_min = u_volt - tol; in _opp_add_v1()
2065 new_opp->supplies[0].u_volt_max = u_volt + tol; in _opp_add_v1()
2066 new_opp->available = true; in _opp_add_v1()
2067 new_opp->dynamic = dynamic; in _opp_add_v1()
2072 if (ret == -EBUSY) in _opp_add_v1()
2081 blocking_notifier_call_chain(&opp_table->head, OPP_EVENT_ADD, new_opp); in _opp_add_v1()
2091 * _opp_set_supported_hw() - Set supported platforms
2092 * @dev: Device for which supported-hw has to be set.
2097 * specify the hierarchy of versions it supports. OPP layer will then enable
2098 * OPPs, which are available for those versions, based on its 'opp-supported-hw'
2104 /* Another CPU that shares the OPP table has set the property ? */ in _opp_set_supported_hw()
2105 if (opp_table->supported_hw) in _opp_set_supported_hw()
2108 opp_table->supported_hw = kmemdup(versions, count * sizeof(*versions), in _opp_set_supported_hw()
2110 if (!opp_table->supported_hw) in _opp_set_supported_hw()
2111 return -ENOMEM; in _opp_set_supported_hw()
2113 opp_table->supported_hw_count = count; in _opp_set_supported_hw()
2119 * _opp_put_supported_hw() - Releases resources blocked for supported hw
2120 * @opp_table: OPP table returned by _opp_set_supported_hw().
2128 if (opp_table->supported_hw) { in _opp_put_supported_hw()
2129 kfree(opp_table->supported_hw); in _opp_put_supported_hw()
2130 opp_table->supported_hw = NULL; in _opp_put_supported_hw()
2131 opp_table->supported_hw_count = 0; in _opp_put_supported_hw()
2136 * _opp_set_prop_name() - Set prop-extn name
2137 * @dev: Device for which the prop-name has to be set.
2142 * which the extension will apply are opp-microvolt and opp-microamp. OPP core
2143 * should postfix the property name with -<name> while looking for them.
2147 /* Another CPU that shares the OPP table has set the property ? */ in _opp_set_prop_name()
2148 if (!opp_table->prop_name) { in _opp_set_prop_name()
2149 opp_table->prop_name = kstrdup(name, GFP_KERNEL); in _opp_set_prop_name()
2150 if (!opp_table->prop_name) in _opp_set_prop_name()
2151 return -ENOMEM; in _opp_set_prop_name()
2158 * _opp_put_prop_name() - Releases resources blocked for prop-name
2159 * @opp_table: OPP table returned by _opp_set_prop_name().
2167 if (opp_table->prop_name) { in _opp_put_prop_name()
2168 kfree(opp_table->prop_name); in _opp_put_prop_name()
2169 opp_table->prop_name = NULL; in _opp_put_prop_name()
2174 * _opp_set_regulators() - Set regulator names for the device
2179 * In order to support OPP switching, OPP layer needs to know the name of the
2197 return -EINVAL; in _opp_set_regulators()
2199 /* Another CPU that shares the OPP table has set the regulators ? */ in _opp_set_regulators()
2200 if (opp_table->regulators) in _opp_set_regulators()
2203 opp_table->regulators = kmalloc_array(count, in _opp_set_regulators()
2204 sizeof(*opp_table->regulators), in _opp_set_regulators()
2206 if (!opp_table->regulators) in _opp_set_regulators()
2207 return -ENOMEM; in _opp_set_regulators()
2218 opp_table->regulators[i] = reg; in _opp_set_regulators()
2221 opp_table->regulator_count = count; in _opp_set_regulators()
2224 if (count == 1) in _opp_set_regulators()
2225 opp_table->config_regulators = _opp_config_regulator_single; in _opp_set_regulators()
2231 regulator_put(opp_table->regulators[--i]); in _opp_set_regulators()
2233 kfree(opp_table->regulators); in _opp_set_regulators()
2234 opp_table->regulators = NULL; in _opp_set_regulators()
2235 opp_table->regulator_count = -1; in _opp_set_regulators()
2241 * _opp_put_regulators() - Releases resources blocked for regulator
2242 * @opp_table: OPP table returned from _opp_set_regulators().
2248 if (!opp_table->regulators) in _opp_put_regulators()
2251 if (opp_table->enabled) { in _opp_put_regulators()
2252 for (i = opp_table->regulator_count - 1; i >= 0; i--) in _opp_put_regulators()
2253 regulator_disable(opp_table->regulators[i]); in _opp_put_regulators()
2256 for (i = opp_table->regulator_count - 1; i >= 0; i--) in _opp_put_regulators()
2257 regulator_put(opp_table->regulators[i]); in _opp_put_regulators()
2259 kfree(opp_table->regulators); in _opp_put_regulators()
2260 opp_table->regulators = NULL; in _opp_put_regulators()
2261 opp_table->regulator_count = -1; in _opp_put_regulators()
2268 for (i = count - 1; i >= 0; i--) in _put_clks()
2269 clk_put(opp_table->clks[i]); in _put_clks()
2271 kfree(opp_table->clks); in _put_clks()
2272 opp_table->clks = NULL; in _put_clks()
2276 * _opp_set_clknames() - Set clk names for the device
2280 * In order to support OPP switching, OPP layer needs to get pointers to the
2282 * (i.e. by passing connection-id as NULL), but for a device with multiple
2283 * clocks available, the OPP core needs to know the exact names of the clks to
2304 if (!count && !names[1]) in _opp_set_clknames()
2305 count = 1; in _opp_set_clknames()
2308 if (!count || (!config_clks && count > 1)) in _opp_set_clknames()
2309 return -EINVAL; in _opp_set_clknames()
2311 /* Another CPU that shares the OPP table has set the clkname ? */ in _opp_set_clknames()
2312 if (opp_table->clks) in _opp_set_clknames()
2315 opp_table->clks = kmalloc_array(count, sizeof(*opp_table->clks), in _opp_set_clknames()
2317 if (!opp_table->clks) in _opp_set_clknames()
2318 return -ENOMEM; in _opp_set_clknames()
2330 opp_table->clks[i] = clk; in _opp_set_clknames()
2333 opp_table->clk_count = count; in _opp_set_clknames()
2334 opp_table->config_clks = config_clks; in _opp_set_clknames()
2337 if (count == 1) { in _opp_set_clknames()
2338 if (!opp_table->config_clks) in _opp_set_clknames()
2339 opp_table->config_clks = _opp_config_clk_single; in _opp_set_clknames()
2346 * - avoiding clks[0] everywhere else. in _opp_set_clknames()
2347 * - not running single clk helpers for multiple clk usecase by in _opp_set_clknames()
2350 * Since this is single-clk case, just update the clk pointer in _opp_set_clknames()
2353 opp_table->clk = opp_table->clks[0]; in _opp_set_clknames()
2364 * _opp_put_clknames() - Releases resources blocked for clks.
2365 * @opp_table: OPP table returned from _opp_set_clknames().
2369 if (!opp_table->clks) in _opp_put_clknames()
2372 opp_table->config_clks = NULL; in _opp_put_clknames()
2373 opp_table->clk = ERR_PTR(-ENODEV); in _opp_put_clknames()
2375 _put_clks(opp_table, opp_table->clk_count); in _opp_put_clknames()
2379 * _opp_set_config_regulators_helper() - Register custom set regulator helper.
2390 /* Another CPU that shares the OPP table has set the helper ? */ in _opp_set_config_regulators_helper()
2391 if (!opp_table->config_regulators) in _opp_set_config_regulators_helper()
2392 opp_table->config_regulators = config_regulators; in _opp_set_config_regulators_helper()
2398 * _opp_put_config_regulators_helper() - Releases resources blocked for
2400 * @opp_table: OPP table returned from _opp_set_config_regulators_helper().
2406 if (opp_table->config_regulators) in _opp_put_config_regulators_helper()
2407 opp_table->config_regulators = NULL; in _opp_put_config_regulators_helper()
2414 if (!opp_table->genpd_virt_devs) in _detach_genpd()
2417 for (index = 0; index < opp_table->required_opp_count; index++) { in _detach_genpd()
2418 if (!opp_table->genpd_virt_devs[index]) in _detach_genpd()
2421 dev_pm_domain_detach(opp_table->genpd_virt_devs[index], false); in _detach_genpd()
2422 opp_table->genpd_virt_devs[index] = NULL; in _detach_genpd()
2425 kfree(opp_table->genpd_virt_devs); in _detach_genpd()
2426 opp_table->genpd_virt_devs = NULL; in _detach_genpd()
2430 * _opp_attach_genpd - Attach genpd(s) for the device and save virtual device pointer
2436 * virtual genpd devices, which are created for each consumer device - genpd
2438 * and are required by the OPP core to set the performance state of the genpd.
2446 * Otherwise the original device structure will be used instead by the OPP core.
2449 * "required-opps" are added in DT.
2455 int index = 0, ret = -EINVAL; in _opp_attach_genpd()
2458 if (opp_table->genpd_virt_devs) in _opp_attach_genpd()
2462 * If the genpd's OPP table isn't already initialized, parsing of the in _opp_attach_genpd()
2463 * required-opps fail for dev. We should retry this after genpd's OPP in _opp_attach_genpd()
2466 if (!opp_table->required_opp_count) in _opp_attach_genpd()
2467 return -EPROBE_DEFER; in _opp_attach_genpd()
2469 mutex_lock(&opp_table->genpd_virt_dev_lock); in _opp_attach_genpd()
2471 opp_table->genpd_virt_devs = kcalloc(opp_table->required_opp_count, in _opp_attach_genpd()
2472 sizeof(*opp_table->genpd_virt_devs), in _opp_attach_genpd()
2474 if (!opp_table->genpd_virt_devs) in _opp_attach_genpd()
2478 if (index >= opp_table->required_opp_count) { in _opp_attach_genpd()
2479 dev_err(dev, "Index can't be greater than required-opp-count - 1, %s (%d : %d)\n", in _opp_attach_genpd()
2480 *name, opp_table->required_opp_count, index); in _opp_attach_genpd()
2486 ret = virt_dev ? PTR_ERR(virt_dev) : -ENODEV; in _opp_attach_genpd()
2491 opp_table->genpd_virt_devs[index] = virt_dev; in _opp_attach_genpd()
2497 *virt_devs = opp_table->genpd_virt_devs; in _opp_attach_genpd()
2498 mutex_unlock(&opp_table->genpd_virt_dev_lock); in _opp_attach_genpd()
2505 mutex_unlock(&opp_table->genpd_virt_dev_lock); in _opp_attach_genpd()
2511 * _opp_detach_genpd() - Detach genpd(s) from the device.
2512 * @opp_table: OPP table returned by _opp_attach_genpd().
2515 * OPP table.
2523 mutex_lock(&opp_table->genpd_virt_dev_lock); in _opp_detach_genpd()
2525 mutex_unlock(&opp_table->genpd_virt_dev_lock); in _opp_detach_genpd()
2530 if (data->flags & OPP_CONFIG_GENPD) in _opp_clear_config()
2531 _opp_detach_genpd(data->opp_table); in _opp_clear_config()
2532 if (data->flags & OPP_CONFIG_REGULATOR) in _opp_clear_config()
2533 _opp_put_regulators(data->opp_table); in _opp_clear_config()
2534 if (data->flags & OPP_CONFIG_SUPPORTED_HW) in _opp_clear_config()
2535 _opp_put_supported_hw(data->opp_table); in _opp_clear_config()
2536 if (data->flags & OPP_CONFIG_REGULATOR_HELPER) in _opp_clear_config()
2537 _opp_put_config_regulators_helper(data->opp_table); in _opp_clear_config()
2538 if (data->flags & OPP_CONFIG_PROP_NAME) in _opp_clear_config()
2539 _opp_put_prop_name(data->opp_table); in _opp_clear_config()
2540 if (data->flags & OPP_CONFIG_CLK) in _opp_clear_config()
2541 _opp_put_clknames(data->opp_table); in _opp_clear_config()
2543 dev_pm_opp_put_opp_table(data->opp_table); in _opp_clear_config()
2548 * dev_pm_opp_set_config() - Set OPP configuration for the device.
2550 * @config: OPP configuration.
2552 * This allows all device OPP configurations to be performed at once.
2555 * be called multiple times for the same OPP table, for example once for each
2557 * calls to dev_pm_opp_clear_config() in order to free the OPP table properly.
2561 * returned token will be >= 1 for success and negative for errors. The minimum
2562 * value of 1 is chosen here to make it easy for callers to manage the resource.
2573 return -ENOMEM; in dev_pm_opp_set_config()
2581 data->opp_table = opp_table; in dev_pm_opp_set_config()
2582 data->flags = 0; in dev_pm_opp_set_config()
2585 if (WARN_ON(!list_empty(&opp_table->opp_list))) { in dev_pm_opp_set_config()
2586 ret = -EBUSY; in dev_pm_opp_set_config()
2591 if (config->clk_names) { in dev_pm_opp_set_config()
2592 ret = _opp_set_clknames(opp_table, dev, config->clk_names, in dev_pm_opp_set_config()
2593 config->config_clks); in dev_pm_opp_set_config()
2597 data->flags |= OPP_CONFIG_CLK; in dev_pm_opp_set_config()
2598 } else if (config->config_clks) { in dev_pm_opp_set_config()
2600 ret = -EINVAL; in dev_pm_opp_set_config()
2605 if (config->prop_name) { in dev_pm_opp_set_config()
2606 ret = _opp_set_prop_name(opp_table, config->prop_name); in dev_pm_opp_set_config()
2610 data->flags |= OPP_CONFIG_PROP_NAME; in dev_pm_opp_set_config()
2614 if (config->config_regulators) { in dev_pm_opp_set_config()
2616 config->config_regulators); in dev_pm_opp_set_config()
2620 data->flags |= OPP_CONFIG_REGULATOR_HELPER; in dev_pm_opp_set_config()
2624 if (config->supported_hw) { in dev_pm_opp_set_config()
2625 ret = _opp_set_supported_hw(opp_table, config->supported_hw, in dev_pm_opp_set_config()
2626 config->supported_hw_count); in dev_pm_opp_set_config()
2630 data->flags |= OPP_CONFIG_SUPPORTED_HW; in dev_pm_opp_set_config()
2634 if (config->regulator_names) { in dev_pm_opp_set_config()
2636 config->regulator_names); in dev_pm_opp_set_config()
2640 data->flags |= OPP_CONFIG_REGULATOR; in dev_pm_opp_set_config()
2644 if (config->genpd_names) { in dev_pm_opp_set_config()
2645 ret = _opp_attach_genpd(opp_table, dev, config->genpd_names, in dev_pm_opp_set_config()
2646 config->virt_devs); in dev_pm_opp_set_config()
2650 data->flags |= OPP_CONFIG_GENPD; in dev_pm_opp_set_config()
2653 ret = xa_alloc(&opp_configs, &id, data, XA_LIMIT(1, INT_MAX), in dev_pm_opp_set_config()
2667 * dev_pm_opp_clear_config() - Releases resources blocked for OPP configuration.
2668 * @opp_table: OPP table returned from dev_pm_opp_set_config().
2670 * This allows all device OPP configurations to be cleared at once. This must be
2674 * Currently the first call itself ends up freeing all the OPP configurations,
2675 * while the later ones only drop the OPP table reference. This works well for
2676 * now as we would never want to use an half initialized OPP table and want to
2704 * devm_pm_opp_set_config() - Set OPP configuration for the device.
2706 * @config: OPP configuration.
2708 * This allows all device OPP configurations to be performed at once.
2709 * This is a resource-managed variant of dev_pm_opp_set_config().
2726 * dev_pm_opp_xlate_required_opp() - Find required OPP for @src_table OPP.
2727 * @src_table: OPP table which has @dst_table as one of its required OPP table.
2728 * @dst_table: Required OPP table of the @src_table.
2729 * @src_opp: OPP from the @src_table.
2731 * This function returns the OPP (present in @dst_table) pointed out by the
2732 * "required-opps" property of the @src_opp (present in @src_table).
2734 * The callers are required to call dev_pm_opp_put() for the returned OPP after
2743 struct dev_pm_opp *opp, *dest_opp = ERR_PTR(-ENODEV); in dev_pm_opp_xlate_required_opp() local
2747 !src_table->required_opp_tables) in dev_pm_opp_xlate_required_opp()
2748 return ERR_PTR(-EINVAL); in dev_pm_opp_xlate_required_opp()
2750 /* required-opps not fully initialized yet */ in dev_pm_opp_xlate_required_opp()
2752 return ERR_PTR(-EBUSY); in dev_pm_opp_xlate_required_opp()
2754 for (i = 0; i < src_table->required_opp_count; i++) { in dev_pm_opp_xlate_required_opp()
2755 if (src_table->required_opp_tables[i] == dst_table) { in dev_pm_opp_xlate_required_opp()
2756 mutex_lock(&src_table->lock); in dev_pm_opp_xlate_required_opp()
2758 list_for_each_entry(opp, &src_table->opp_list, node) { in dev_pm_opp_xlate_required_opp()
2759 if (opp == src_opp) { in dev_pm_opp_xlate_required_opp()
2760 dest_opp = opp->required_opps[i]; in dev_pm_opp_xlate_required_opp()
2766 mutex_unlock(&src_table->lock); in dev_pm_opp_xlate_required_opp()
2772 pr_err("%s: Couldn't find matching OPP (%p: %p)\n", __func__, in dev_pm_opp_xlate_required_opp()
2781 * dev_pm_opp_xlate_performance_state() - Find required OPP's pstate for src_table.
2782 * @src_table: OPP table which has dst_table as one of its required OPP table.
2783 * @dst_table: Required OPP table of the src_table.
2786 * This Returns pstate of the OPP (present in @dst_table) pointed out by the
2787 * "required-opps" property of the OPP (present in @src_table) which has
2797 struct dev_pm_opp *opp; in dev_pm_opp_xlate_performance_state() local
2798 int dest_pstate = -EINVAL; in dev_pm_opp_xlate_performance_state()
2805 * and so none of them have the "required-opps" property set. Return the in dev_pm_opp_xlate_performance_state()
2808 if (!src_table || !src_table->required_opp_count) in dev_pm_opp_xlate_performance_state()
2811 /* Both OPP tables must belong to genpds */ in dev_pm_opp_xlate_performance_state()
2812 if (unlikely(!src_table->is_genpd || !dst_table->is_genpd)) { in dev_pm_opp_xlate_performance_state()
2814 return -EINVAL; in dev_pm_opp_xlate_performance_state()
2817 /* required-opps not fully initialized yet */ in dev_pm_opp_xlate_performance_state()
2819 return -EBUSY; in dev_pm_opp_xlate_performance_state()
2821 for (i = 0; i < src_table->required_opp_count; i++) { in dev_pm_opp_xlate_performance_state()
2822 if (src_table->required_opp_tables[i]->np == dst_table->np) in dev_pm_opp_xlate_performance_state()
2826 if (unlikely(i == src_table->required_opp_count)) { in dev_pm_opp_xlate_performance_state()
2827 pr_err("%s: Couldn't find matching OPP table (%p: %p)\n", in dev_pm_opp_xlate_performance_state()
2829 return -EINVAL; in dev_pm_opp_xlate_performance_state()
2832 mutex_lock(&src_table->lock); in dev_pm_opp_xlate_performance_state()
2834 list_for_each_entry(opp, &src_table->opp_list, node) { in dev_pm_opp_xlate_performance_state()
2835 if (opp->level == pstate) { in dev_pm_opp_xlate_performance_state()
2836 dest_pstate = opp->required_opps[i]->level; in dev_pm_opp_xlate_performance_state()
2841 pr_err("%s: Couldn't find matching OPP (%p: %p)\n", __func__, src_table, in dev_pm_opp_xlate_performance_state()
2845 mutex_unlock(&src_table->lock); in dev_pm_opp_xlate_performance_state()
2851 * dev_pm_opp_add() - Add an OPP table from a table definitions
2853 * @freq: Frequency in Hz for this OPP
2854 * @u_volt: Voltage in uVolts for this OPP
2856 * This function adds an opp definition to the opp table and returns status.
2857 * The opp is made available by default and it can be controlled using
2862 * Duplicate OPPs (both freq and volt are same) and opp->available
2863 * -EEXIST Freq are same and volt are different OR
2864 * Duplicate OPPs (both freq and volt are same) and !opp->available
2865 * -ENOMEM Memory allocation failure
2877 opp_table->regulator_count = 1; in dev_pm_opp_add()
2888 * _opp_set_availability() - helper to set the availability of an opp
2890 * @freq: OPP frequency to modify availability
2891 * @availability_req: availability status requested for this opp
2893 * Set the availability of an OPP, opp_{enable,disable} share a common logic
2896 * Return: -EINVAL for bad pointers, -ENOMEM if no memory available for the
2904 struct dev_pm_opp *tmp_opp, *opp = ERR_PTR(-ENODEV); in _opp_set_availability() local
2911 dev_warn(dev, "%s: Device OPP not found (%d)\n", __func__, r); in _opp_set_availability()
2916 r = -EINVAL; in _opp_set_availability()
2920 mutex_lock(&opp_table->lock); in _opp_set_availability()
2923 list_for_each_entry(tmp_opp, &opp_table->opp_list, node) { in _opp_set_availability()
2924 if (tmp_opp->rates[0] == freq) { in _opp_set_availability()
2925 opp = tmp_opp; in _opp_set_availability()
2930 if (IS_ERR(opp)) { in _opp_set_availability()
2931 r = PTR_ERR(opp); in _opp_set_availability()
2936 if (opp->available == availability_req) in _opp_set_availability()
2939 opp->available = availability_req; in _opp_set_availability()
2941 dev_pm_opp_get(opp); in _opp_set_availability()
2942 mutex_unlock(&opp_table->lock); in _opp_set_availability()
2944 /* Notify the change of the OPP availability */ in _opp_set_availability()
2946 blocking_notifier_call_chain(&opp_table->head, OPP_EVENT_ENABLE, in _opp_set_availability()
2947 opp); in _opp_set_availability()
2949 blocking_notifier_call_chain(&opp_table->head, in _opp_set_availability()
2950 OPP_EVENT_DISABLE, opp); in _opp_set_availability()
2952 dev_pm_opp_put(opp); in _opp_set_availability()
2956 mutex_unlock(&opp_table->lock); in _opp_set_availability()
2963 * dev_pm_opp_adjust_voltage() - helper to change the voltage of an OPP
2965 * @freq: OPP frequency to adjust voltage of
2966 * @u_volt: new OPP target voltage
2967 * @u_volt_min: new OPP min voltage
2968 * @u_volt_max: new OPP max voltage
2970 * Return: -EINVAL for bad pointers, -ENOMEM if no memory available for the
2980 struct dev_pm_opp *tmp_opp, *opp = ERR_PTR(-ENODEV); in dev_pm_opp_adjust_voltage() local
2987 dev_warn(dev, "%s: Device OPP not found (%d)\n", __func__, r); in dev_pm_opp_adjust_voltage()
2992 r = -EINVAL; in dev_pm_opp_adjust_voltage()
2996 mutex_lock(&opp_table->lock); in dev_pm_opp_adjust_voltage()
2999 list_for_each_entry(tmp_opp, &opp_table->opp_list, node) { in dev_pm_opp_adjust_voltage()
3000 if (tmp_opp->rates[0] == freq) { in dev_pm_opp_adjust_voltage()
3001 opp = tmp_opp; in dev_pm_opp_adjust_voltage()
3006 if (IS_ERR(opp)) { in dev_pm_opp_adjust_voltage()
3007 r = PTR_ERR(opp); in dev_pm_opp_adjust_voltage()
3012 if (opp->supplies->u_volt == u_volt) in dev_pm_opp_adjust_voltage()
3015 opp->supplies->u_volt = u_volt; in dev_pm_opp_adjust_voltage()
3016 opp->supplies->u_volt_min = u_volt_min; in dev_pm_opp_adjust_voltage()
3017 opp->supplies->u_volt_max = u_volt_max; in dev_pm_opp_adjust_voltage()
3019 dev_pm_opp_get(opp); in dev_pm_opp_adjust_voltage()
3020 mutex_unlock(&opp_table->lock); in dev_pm_opp_adjust_voltage()
3022 /* Notify the voltage change of the OPP */ in dev_pm_opp_adjust_voltage()
3023 blocking_notifier_call_chain(&opp_table->head, OPP_EVENT_ADJUST_VOLTAGE, in dev_pm_opp_adjust_voltage()
3024 opp); in dev_pm_opp_adjust_voltage()
3026 dev_pm_opp_put(opp); in dev_pm_opp_adjust_voltage()
3030 mutex_unlock(&opp_table->lock); in dev_pm_opp_adjust_voltage()
3038 * dev_pm_opp_enable() - Enable a specific OPP
3040 * @freq: OPP frequency to enable
3042 * Enables a provided opp. If the operation is valid, this returns 0, else the
3043 * corresponding error value. It is meant to be used for users an OPP available
3046 * Return: -EINVAL for bad pointers, -ENOMEM if no memory available for the
3057 * dev_pm_opp_disable() - Disable a specific OPP
3059 * @freq: OPP frequency to disable
3061 * Disables a provided opp. If the operation is valid, this returns
3063 * control by users to make this OPP not available until the circumstances are
3066 * Return: -EINVAL for bad pointers, -ENOMEM if no memory available for the
3077 * dev_pm_opp_register_notifier() - Register OPP notifier for the device
3092 ret = blocking_notifier_chain_register(&opp_table->head, nb); in dev_pm_opp_register_notifier()
3101 * dev_pm_opp_unregister_notifier() - Unregister OPP notifier for the device
3117 ret = blocking_notifier_chain_unregister(&opp_table->head, nb); in dev_pm_opp_unregister_notifier()
3126 * dev_pm_opp_remove_table() - Free all OPPs associated with the device
3127 * @dev: device pointer used to lookup OPP table.
3141 if (error != -ENODEV) in dev_pm_opp_remove_table()
3142 WARN(1, "%s: opp_table: %d\n", in dev_pm_opp_remove_table()
3150 * Drop the extra reference only if the OPP table was successfully added in dev_pm_opp_remove_table()
3162 * dev_pm_opp_sync_regulators() - Sync state of voltage regulators
3165 * Sync voltage state of the OPP table regulators.
3175 /* Device may not have OPP table */ in dev_pm_opp_sync_regulators()
3181 if (unlikely(!opp_table->regulators)) in dev_pm_opp_sync_regulators()
3185 if (!opp_table->enabled) in dev_pm_opp_sync_regulators()
3188 for (i = 0; i < opp_table->regulator_count; i++) { in dev_pm_opp_sync_regulators()
3189 reg = opp_table->regulators[i]; in dev_pm_opp_sync_regulators()