Lines Matching +full:opp +full:- +full:microamp
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()
101 * representation in the OPP table and manage the clock configuration themselves
106 return !WARN_ON(opp_table->clk_count > 1); in assert_single_clk()
110 * dev_pm_opp_get_voltage() - Gets the voltage corresponding to an opp
111 * @opp: opp for which voltage has to be returned for
113 * Return: voltage in micro volt corresponding to the opp, else
118 unsigned long dev_pm_opp_get_voltage(struct dev_pm_opp *opp) in dev_pm_opp_get_voltage() argument
120 if (IS_ERR_OR_NULL(opp)) { in dev_pm_opp_get_voltage()
125 return opp->supplies[0].u_volt; in dev_pm_opp_get_voltage()
130 * dev_pm_opp_get_supplies() - Gets the supply information corresponding to an opp
131 * @opp: opp for which voltage has to be returned for
140 int dev_pm_opp_get_supplies(struct dev_pm_opp *opp, in dev_pm_opp_get_supplies() argument
143 if (IS_ERR_OR_NULL(opp) || !supplies) { in dev_pm_opp_get_supplies()
145 return -EINVAL; in dev_pm_opp_get_supplies()
148 memcpy(supplies, opp->supplies, in dev_pm_opp_get_supplies()
149 sizeof(*supplies) * opp->opp_table->regulator_count); in dev_pm_opp_get_supplies()
155 * dev_pm_opp_get_power() - Gets the power corresponding to an opp
156 * @opp: opp for which power has to be returned for
158 * Return: power in micro watt corresponding to the opp, else
163 unsigned long dev_pm_opp_get_power(struct dev_pm_opp *opp) in dev_pm_opp_get_power() argument
168 if (IS_ERR_OR_NULL(opp)) { in dev_pm_opp_get_power()
172 for (i = 0; i < opp->opp_table->regulator_count; i++) in dev_pm_opp_get_power()
173 opp_power += opp->supplies[i].u_watt; in dev_pm_opp_get_power()
180 * dev_pm_opp_get_freq_indexed() - Gets the frequency corresponding to an
181 * available opp with specified index
182 * @opp: opp for which frequency has to be returned for
183 * @index: index of the frequency within the required opp
185 * Return: frequency in hertz corresponding to the opp with specified index,
188 unsigned long dev_pm_opp_get_freq_indexed(struct dev_pm_opp *opp, u32 index) in dev_pm_opp_get_freq_indexed() argument
190 if (IS_ERR_OR_NULL(opp) || index >= opp->opp_table->clk_count) { in dev_pm_opp_get_freq_indexed()
195 return opp->rates[index]; in dev_pm_opp_get_freq_indexed()
200 * dev_pm_opp_get_level() - Gets the level corresponding to an available opp
201 * @opp: opp for which level value has to be returned for
203 * Return: level read from device tree corresponding to the opp, else
206 unsigned int dev_pm_opp_get_level(struct dev_pm_opp *opp) in dev_pm_opp_get_level() argument
208 if (IS_ERR_OR_NULL(opp) || !opp->available) { in dev_pm_opp_get_level()
213 return opp->level; in dev_pm_opp_get_level()
218 * dev_pm_opp_get_required_pstate() - Gets the required performance state
219 * corresponding to an available opp
220 * @opp: opp for which performance state has to be returned for
221 * @index: index of the required opp
224 * required opp, else return 0.
226 unsigned int dev_pm_opp_get_required_pstate(struct dev_pm_opp *opp, in dev_pm_opp_get_required_pstate() argument
229 if (IS_ERR_OR_NULL(opp) || !opp->available || in dev_pm_opp_get_required_pstate()
230 index >= opp->opp_table->required_opp_count) { in dev_pm_opp_get_required_pstate()
235 /* required-opps not fully initialized yet */ in dev_pm_opp_get_required_pstate()
236 if (lazy_linking_pending(opp->opp_table)) in dev_pm_opp_get_required_pstate()
239 /* The required OPP table must belong to a genpd */ in dev_pm_opp_get_required_pstate()
240 if (unlikely(!opp->opp_table->required_opp_tables[index]->is_genpd)) { in dev_pm_opp_get_required_pstate()
245 return opp->required_opps[index]->level; in dev_pm_opp_get_required_pstate()
250 * dev_pm_opp_is_turbo() - Returns if opp is turbo OPP or not
251 * @opp: opp for which turbo mode is being verified
257 * Return: true if opp is turbo opp, else false.
259 bool dev_pm_opp_is_turbo(struct dev_pm_opp *opp) in dev_pm_opp_is_turbo() argument
261 if (IS_ERR_OR_NULL(opp) || !opp->available) { in dev_pm_opp_is_turbo()
266 return opp->turbo; in dev_pm_opp_is_turbo()
271 * dev_pm_opp_get_max_clock_latency() - Get max clock latency in nanoseconds
285 clock_latency_ns = opp_table->clock_latency_ns_max; in dev_pm_opp_get_max_clock_latency()
294 * dev_pm_opp_get_max_volt_latency() - Get max voltage latency in nanoseconds
302 struct dev_pm_opp *opp; in dev_pm_opp_get_max_volt_latency() local
316 if (!opp_table->regulators) in dev_pm_opp_get_max_volt_latency()
319 count = opp_table->regulator_count; in dev_pm_opp_get_max_volt_latency()
325 mutex_lock(&opp_table->lock); in dev_pm_opp_get_max_volt_latency()
331 list_for_each_entry(opp, &opp_table->opp_list, node) { in dev_pm_opp_get_max_volt_latency()
332 if (!opp->available) in dev_pm_opp_get_max_volt_latency()
335 if (opp->supplies[i].u_volt_min < uV[i].min) in dev_pm_opp_get_max_volt_latency()
336 uV[i].min = opp->supplies[i].u_volt_min; in dev_pm_opp_get_max_volt_latency()
337 if (opp->supplies[i].u_volt_max > uV[i].max) in dev_pm_opp_get_max_volt_latency()
338 uV[i].max = opp->supplies[i].u_volt_max; in dev_pm_opp_get_max_volt_latency()
342 mutex_unlock(&opp_table->lock); in dev_pm_opp_get_max_volt_latency()
349 reg = opp_table->regulators[i]; in dev_pm_opp_get_max_volt_latency()
364 * dev_pm_opp_get_max_transition_latency() - Get max transition latency in
369 * switch from one OPP to other.
379 * dev_pm_opp_get_suspend_opp_freq() - Get frequency of suspend opp in Hz
382 * Return: This function returns the frequency of the OPP marked as suspend_opp
394 if (opp_table->suspend_opp && opp_table->suspend_opp->available) in dev_pm_opp_get_suspend_opp_freq()
395 freq = dev_pm_opp_get_freq(opp_table->suspend_opp); in dev_pm_opp_get_suspend_opp_freq()
405 struct dev_pm_opp *opp; in _get_opp_count() local
408 mutex_lock(&opp_table->lock); in _get_opp_count()
410 list_for_each_entry(opp, &opp_table->opp_list, node) { in _get_opp_count()
411 if (opp->available) in _get_opp_count()
415 mutex_unlock(&opp_table->lock); in _get_opp_count()
421 * dev_pm_opp_get_opp_count() - Get number of opps available in the opp table
435 dev_dbg(dev, "%s: OPP table not found (%d)\n", in dev_pm_opp_get_opp_count()
448 static unsigned long _read_freq(struct dev_pm_opp *opp, int index) in _read_freq() argument
450 return opp->rates[index]; in _read_freq()
453 static unsigned long _read_level(struct dev_pm_opp *opp, int index) in _read_level() argument
455 return opp->level; in _read_level()
458 static unsigned long _read_bw(struct dev_pm_opp *opp, int index) in _read_bw() argument
460 return opp->bandwidth[index].peak; in _read_bw()
464 static bool _compare_exact(struct dev_pm_opp **opp, struct dev_pm_opp *temp_opp, in _compare_exact() argument
468 *opp = temp_opp; in _compare_exact()
475 static bool _compare_ceil(struct dev_pm_opp **opp, struct dev_pm_opp *temp_opp, in _compare_ceil() argument
479 *opp = temp_opp; in _compare_ceil()
486 static bool _compare_floor(struct dev_pm_opp **opp, struct dev_pm_opp *temp_opp, in _compare_floor() argument
492 *opp = temp_opp; in _compare_floor()
499 unsigned long (*read)(struct dev_pm_opp *opp, int index), in _opp_table_find_key() argument
500 bool (*compare)(struct dev_pm_opp **opp, struct dev_pm_opp *temp_opp, in _opp_table_find_key() argument
504 struct dev_pm_opp *temp_opp, *opp = ERR_PTR(-ERANGE); in _opp_table_find_key() local
508 return ERR_PTR(-EINVAL); in _opp_table_find_key()
510 mutex_lock(&opp_table->lock); in _opp_table_find_key()
512 list_for_each_entry(temp_opp, &opp_table->opp_list, node) { in _opp_table_find_key()
513 if (temp_opp->available == available) { in _opp_table_find_key()
514 if (compare(&opp, temp_opp, read(temp_opp, index), *key)) in _opp_table_find_key()
519 /* Increment the reference count of OPP */ in _opp_table_find_key()
520 if (!IS_ERR(opp)) { in _opp_table_find_key()
521 *key = read(opp, index); in _opp_table_find_key()
522 dev_pm_opp_get(opp); in _opp_table_find_key()
525 mutex_unlock(&opp_table->lock); in _opp_table_find_key()
527 return opp; in _opp_table_find_key()
532 unsigned long (*read)(struct dev_pm_opp *opp, int index), in _find_key() argument
533 bool (*compare)(struct dev_pm_opp **opp, struct dev_pm_opp *temp_opp, in _find_key() argument
538 struct dev_pm_opp *opp; in _find_key() local
542 dev_err(dev, "%s: OPP table not found (%ld)\n", __func__, in _find_key()
547 opp = _opp_table_find_key(opp_table, key, index, available, read, in _find_key()
552 return opp; in _find_key()
557 unsigned long (*read)(struct dev_pm_opp *opp, int index), in _find_key_exact() argument
570 unsigned long (*read)(struct dev_pm_opp *opp, int index), in _opp_table_find_key_ceil() argument
579 unsigned long (*read)(struct dev_pm_opp *opp, int index), in _find_key_ceil() argument
588 unsigned long (*read)(struct dev_pm_opp *opp, int index), in _find_key_floor() argument
596 * dev_pm_opp_find_freq_exact() - search for an exact frequency
599 * @available: true/false - match for available opp
601 * Return: Searches for exact match in the opp table and returns pointer to the
602 * matching opp if found, else returns ERR_PTR in case of error and should
609 * match is for exact matching frequency and is available in the stored OPP
612 * This provides a mechanism to enable an opp which is not available currently
615 * The callers are required to call dev_pm_opp_put() for the returned OPP after
627 * dev_pm_opp_find_freq_exact_indexed() - Search for an exact freq for the
632 * @available: true/false - match for available opp
634 * Search for the matching exact OPP for the clock corresponding to the
637 * Return: matching *opp , else returns ERR_PTR in case of error and should be
643 * The callers are required to call dev_pm_opp_put() for the returned OPP after
662 * dev_pm_opp_find_freq_ceil() - Search for an rounded ceil freq
666 * Search for the matching ceil *available* OPP from a starting freq
669 * Return: matching *opp and refreshes *freq accordingly, else returns
676 * The callers are required to call dev_pm_opp_put() for the returned OPP after
687 * dev_pm_opp_find_freq_ceil_indexed() - Search for a rounded ceil freq for the
693 * Search for the matching ceil *available* OPP for the clock corresponding to
696 * Return: matching *opp and refreshes *freq accordingly, else returns
703 * The callers are required to call dev_pm_opp_put() for the returned OPP after
715 * dev_pm_opp_find_freq_floor() - Search for a rounded floor freq
719 * Search for the matching floor *available* OPP from a starting freq
722 * Return: matching *opp and refreshes *freq accordingly, else returns
729 * The callers are required to call dev_pm_opp_put() for the returned OPP after
740 * dev_pm_opp_find_freq_floor_indexed() - Search for a rounded floor freq for the
746 * Search for the matching floor *available* OPP for the clock corresponding to
749 * Return: matching *opp and refreshes *freq accordingly, else returns
756 * The callers are required to call dev_pm_opp_put() for the returned OPP after
768 * dev_pm_opp_find_level_exact() - search for an exact level
772 * Return: Searches for exact match in the opp table and returns pointer to the
773 * matching opp if found, else returns ERR_PTR in case of error and should
779 * The callers are required to call dev_pm_opp_put() for the returned OPP after
790 * dev_pm_opp_find_level_ceil() - search for an rounded up level
794 * Return: Searches for rounded up match in the opp table and returns pointer
795 * to the matching opp if found, else returns ERR_PTR in case of error and
801 * The callers are required to call dev_pm_opp_put() for the returned OPP after
808 struct dev_pm_opp *opp; in dev_pm_opp_find_level_ceil() local
810 opp = _find_key_ceil(dev, &temp, 0, true, _read_level, NULL); in dev_pm_opp_find_level_ceil()
812 return opp; in dev_pm_opp_find_level_ceil()
817 * dev_pm_opp_find_bw_ceil() - Search for a rounded ceil bandwidth
822 * Search for the matching floor *available* OPP from a starting bandwidth
825 * Return: matching *opp and refreshes *bw accordingly, else returns
832 * The callers are required to call dev_pm_opp_put() for the returned OPP after
839 struct dev_pm_opp *opp; in dev_pm_opp_find_bw_ceil() local
841 opp = _find_key_ceil(dev, &temp, index, true, _read_bw, NULL); in dev_pm_opp_find_bw_ceil()
843 return opp; in dev_pm_opp_find_bw_ceil()
848 * dev_pm_opp_find_bw_floor() - Search for a rounded floor bandwidth
853 * Search for the matching floor *available* OPP from a starting bandwidth
856 * Return: matching *opp and refreshes *bw accordingly, else returns
863 * The callers are required to call dev_pm_opp_put() for the returned OPP after
870 struct dev_pm_opp *opp; in dev_pm_opp_find_bw_floor() local
872 opp = _find_key_floor(dev, &temp, index, true, _read_bw, NULL); in dev_pm_opp_find_bw_floor()
874 return opp; in dev_pm_opp_find_bw_floor()
891 supply->u_volt_min, supply->u_volt, supply->u_volt_max); in _set_opp_voltage()
893 ret = regulator_set_voltage_triplet(reg, supply->u_volt_min, in _set_opp_voltage()
894 supply->u_volt, supply->u_volt_max); in _set_opp_voltage()
897 __func__, supply->u_volt_min, supply->u_volt, in _set_opp_voltage()
898 supply->u_volt_max, ret); in _set_opp_voltage()
905 struct dev_pm_opp *opp, void *data, bool scaling_down) in _opp_config_clk_single() argument
911 /* One of target and opp must be available */ in _opp_config_clk_single()
914 } else if (opp) { in _opp_config_clk_single()
915 freq = opp->rates[0]; in _opp_config_clk_single()
918 return -EINVAL; in _opp_config_clk_single()
921 ret = clk_set_rate(opp_table->clk, freq); in _opp_config_clk_single()
926 opp_table->rate_clk_single = freq; in _opp_config_clk_single()
937 struct opp_table *opp_table, struct dev_pm_opp *opp, void *data, in dev_pm_opp_config_clks_simple() argument
943 for (i = opp_table->clk_count - 1; i >= 0; i--) { in dev_pm_opp_config_clks_simple()
944 ret = clk_set_rate(opp_table->clks[i], opp->rates[i]); in dev_pm_opp_config_clks_simple()
952 for (i = 0; i < opp_table->clk_count; i++) { in dev_pm_opp_config_clks_simple()
953 ret = clk_set_rate(opp_table->clks[i], opp->rates[i]); in dev_pm_opp_config_clks_simple()
976 return -EINVAL; in _opp_config_regulator_single()
979 ret = _set_opp_voltage(dev, reg, new_opp->supplies); in _opp_config_regulator_single()
985 * some boot-enabled regulators. in _opp_config_regulator_single()
987 if (unlikely(!new_opp->opp_table->enabled)) { in _opp_config_regulator_single()
997 struct dev_pm_opp *opp, struct device *dev) in _set_opp_bw() argument
1002 if (!opp_table->paths) in _set_opp_bw()
1005 for (i = 0; i < opp_table->path_count; i++) { in _set_opp_bw()
1006 if (!opp) { in _set_opp_bw()
1010 avg = opp->bandwidth[i].avg; in _set_opp_bw()
1011 peak = opp->bandwidth[i].peak; in _set_opp_bw()
1013 ret = icc_set_bw(opp_table->paths[i], avg, peak); in _set_opp_bw()
1016 opp ? "set" : "remove", i, ret); in _set_opp_bw()
1025 struct dev_pm_opp *opp, int i) in _set_performance_state() argument
1027 unsigned int pstate = likely(opp) ? opp->required_opps[i]->level: 0; in _set_performance_state()
1043 struct opp_table *opp_table, struct dev_pm_opp *opp, bool scaling_down) in _opp_set_required_opps_generic() argument
1045 dev_err(dev, "setting required-opps isn't supported for non-genpd devices\n"); in _opp_set_required_opps_generic()
1046 return -ENOENT; in _opp_set_required_opps_generic()
1050 struct opp_table *opp_table, struct dev_pm_opp *opp, bool scaling_down) in _opp_set_required_opps_genpd() argument
1053 opp_table->genpd_virt_devs ? opp_table->genpd_virt_devs : &dev; in _opp_set_required_opps_genpd()
1060 mutex_lock(&opp_table->genpd_virt_dev_lock); in _opp_set_required_opps_genpd()
1064 for (i = 0; i < opp_table->required_opp_count; i++) { in _opp_set_required_opps_genpd()
1065 ret = _set_performance_state(dev, genpd_virt_devs[i], opp, i); in _opp_set_required_opps_genpd()
1070 for (i = opp_table->required_opp_count - 1; i >= 0; i--) { in _opp_set_required_opps_genpd()
1071 ret = _set_performance_state(dev, genpd_virt_devs[i], opp, i); in _opp_set_required_opps_genpd()
1077 mutex_unlock(&opp_table->genpd_virt_dev_lock); in _opp_set_required_opps_genpd()
1084 struct dev_pm_opp *opp, bool up) in _set_required_opps() argument
1086 /* required-opps not fully initialized yet */ in _set_required_opps()
1088 return -EBUSY; in _set_required_opps()
1090 if (opp_table->set_required_opps) in _set_required_opps()
1091 return opp_table->set_required_opps(dev, opp_table, opp, up); in _set_required_opps()
1100 if (opp_table->set_required_opps) in _update_set_required_opps()
1104 if (opp_table->required_opp_tables[0]->is_genpd) in _update_set_required_opps()
1105 opp_table->set_required_opps = _opp_set_required_opps_genpd; in _update_set_required_opps()
1107 opp_table->set_required_opps = _opp_set_required_opps_generic; in _update_set_required_opps()
1112 struct dev_pm_opp *opp = ERR_PTR(-ENODEV); in _find_current_opp() local
1115 if (!IS_ERR(opp_table->clk)) { in _find_current_opp()
1116 freq = clk_get_rate(opp_table->clk); in _find_current_opp()
1117 opp = _find_freq_ceil(opp_table, &freq); in _find_current_opp()
1121 * Unable to find the current OPP ? Pick the first from the list since in _find_current_opp()
1125 if (IS_ERR(opp)) { in _find_current_opp()
1126 mutex_lock(&opp_table->lock); in _find_current_opp()
1127 opp = list_first_entry(&opp_table->opp_list, struct dev_pm_opp, node); in _find_current_opp()
1128 dev_pm_opp_get(opp); in _find_current_opp()
1129 mutex_unlock(&opp_table->lock); in _find_current_opp()
1132 opp_table->current_opp = opp; in _find_current_opp()
1139 if (!opp_table->enabled) in _disable_opp_table()
1144 * have OPP table for the device, while others don't and in _disable_opp_table()
1154 if (opp_table->regulators) in _disable_opp_table()
1155 regulator_disable(opp_table->regulators[0]); in _disable_opp_table()
1159 opp_table->enabled = false; in _disable_opp_table()
1164 struct dev_pm_opp *opp, void *clk_data, bool forced) in _set_opp() argument
1169 if (unlikely(!opp)) in _set_opp()
1172 /* Find the currently set OPP if we don't know already */ in _set_opp()
1173 if (unlikely(!opp_table->current_opp)) in _set_opp()
1176 old_opp = opp_table->current_opp; in _set_opp()
1179 if (!forced && old_opp == opp && opp_table->enabled) { in _set_opp()
1184 dev_dbg(dev, "%s: switching OPP: Freq %lu -> %lu Hz, Level %u -> %u, Bw %u -> %u\n", in _set_opp()
1185 __func__, old_opp->rates[0], opp->rates[0], old_opp->level, in _set_opp()
1186 opp->level, old_opp->bandwidth ? old_opp->bandwidth[0].peak : 0, in _set_opp()
1187 opp->bandwidth ? opp->bandwidth[0].peak : 0); in _set_opp()
1189 scaling_down = _opp_compare_key(opp_table, old_opp, opp); in _set_opp()
1190 if (scaling_down == -1) in _set_opp()
1195 ret = _set_required_opps(dev, opp_table, opp, true); in _set_opp()
1201 ret = _set_opp_bw(opp_table, opp, dev); in _set_opp()
1207 if (opp_table->config_regulators) { in _set_opp()
1208 ret = opp_table->config_regulators(dev, old_opp, opp, in _set_opp()
1209 opp_table->regulators, in _set_opp()
1210 opp_table->regulator_count); in _set_opp()
1219 if (opp_table->config_clks) { in _set_opp()
1220 ret = opp_table->config_clks(dev, opp_table, opp, clk_data, scaling_down); in _set_opp()
1227 if (opp_table->config_regulators) { in _set_opp()
1228 ret = opp_table->config_regulators(dev, old_opp, opp, in _set_opp()
1229 opp_table->regulators, in _set_opp()
1230 opp_table->regulator_count); in _set_opp()
1238 ret = _set_opp_bw(opp_table, opp, dev); in _set_opp()
1244 ret = _set_required_opps(dev, opp_table, opp, false); in _set_opp()
1251 opp_table->enabled = true; in _set_opp()
1255 dev_pm_opp_get(opp); in _set_opp()
1256 opp_table->current_opp = opp; in _set_opp()
1262 * dev_pm_opp_set_rate() - Configure new OPP based on frequency
1266 * This configures the power-supplies to the levels specified by the OPP
1269 * provided by the opp, should have already rounded to the target OPP's
1276 struct dev_pm_opp *opp = NULL; in dev_pm_opp_set_rate() local
1282 dev_err(dev, "%s: device's opp table doesn't exist\n", __func__); in dev_pm_opp_set_rate()
1288 * For IO devices which require an OPP on some platforms/SoCs in dev_pm_opp_set_rate()
1290 * we look for empty OPP tables with just a clock handle and in dev_pm_opp_set_rate()
1295 ret = opp_table->config_clks(dev, opp_table, NULL, in dev_pm_opp_set_rate()
1300 freq = clk_round_rate(opp_table->clk, target_freq); in dev_pm_opp_set_rate()
1306 * frequencies than the OPP table, don't update the frequency we in dev_pm_opp_set_rate()
1310 opp = _find_freq_ceil(opp_table, &temp_freq); in dev_pm_opp_set_rate()
1311 if (IS_ERR(opp)) { in dev_pm_opp_set_rate()
1312 ret = PTR_ERR(opp); in dev_pm_opp_set_rate()
1313 dev_err(dev, "%s: failed to find OPP for freq %lu (%d)\n", in dev_pm_opp_set_rate()
1319 * An OPP entry specifies the highest frequency at which other in dev_pm_opp_set_rate()
1320 * properties of the OPP entry apply. Even if the new OPP is in dev_pm_opp_set_rate()
1325 forced = opp_table->rate_clk_single != freq; in dev_pm_opp_set_rate()
1328 ret = _set_opp(dev, opp_table, opp, &freq, forced); in dev_pm_opp_set_rate()
1331 dev_pm_opp_put(opp); in dev_pm_opp_set_rate()
1340 * dev_pm_opp_set_opp() - Configure device for OPP
1342 * @opp: OPP to set to
1344 * This configures the device based on the properties of the OPP passed to this
1349 int dev_pm_opp_set_opp(struct device *dev, struct dev_pm_opp *opp) in dev_pm_opp_set_opp() argument
1356 dev_err(dev, "%s: device opp doesn't exist\n", __func__); in dev_pm_opp_set_opp()
1360 ret = _set_opp(dev, opp_table, opp, NULL, false); in dev_pm_opp_set_opp()
1367 /* OPP-dev Helpers */
1372 list_del(&opp_dev->node); in _remove_opp_dev()
1385 /* Initialize opp-dev */ in _add_opp_dev()
1386 opp_dev->dev = dev; in _add_opp_dev()
1388 mutex_lock(&opp_table->lock); in _add_opp_dev()
1389 list_add(&opp_dev->node, &opp_table->dev_list); in _add_opp_dev()
1390 mutex_unlock(&opp_table->lock); in _add_opp_dev()
1405 * Allocate a new OPP table. In the infrequent case where a new in _allocate_opp_table()
1410 return ERR_PTR(-ENOMEM); in _allocate_opp_table()
1412 mutex_init(&opp_table->lock); in _allocate_opp_table()
1413 mutex_init(&opp_table->genpd_virt_dev_lock); in _allocate_opp_table()
1414 INIT_LIST_HEAD(&opp_table->dev_list); in _allocate_opp_table()
1415 INIT_LIST_HEAD(&opp_table->lazy); in _allocate_opp_table()
1417 opp_table->clk = ERR_PTR(-ENODEV); in _allocate_opp_table()
1420 opp_table->regulator_count = -1; in _allocate_opp_table()
1424 ret = -ENOMEM; in _allocate_opp_table()
1433 if (ret == -EPROBE_DEFER) in _allocate_opp_table()
1440 BLOCKING_INIT_NOTIFIER_HEAD(&opp_table->head); in _allocate_opp_table()
1441 INIT_LIST_HEAD(&opp_table->opp_list); in _allocate_opp_table()
1442 kref_init(&opp_table->kref); in _allocate_opp_table()
1449 mutex_destroy(&opp_table->genpd_virt_dev_lock); in _allocate_opp_table()
1450 mutex_destroy(&opp_table->lock); in _allocate_opp_table()
1458 kref_get(&opp_table->kref); in _get_opp_table_kref()
1471 if (!getclk || IS_ERR(opp_table) || !IS_ERR(opp_table->clk) || in _update_opp_table_clk()
1472 opp_table->clks) in _update_opp_table_clk()
1476 opp_table->clk = clk_get(dev, NULL); in _update_opp_table_clk()
1478 ret = PTR_ERR_OR_ZERO(opp_table->clk); in _update_opp_table_clk()
1480 opp_table->config_clks = _opp_config_clk_single; in _update_opp_table_clk()
1481 opp_table->clk_count = 1; in _update_opp_table_clk()
1485 if (ret == -ENOENT) { in _update_opp_table_clk()
1487 * There are few platforms which don't want the OPP core to in _update_opp_table_clk()
1490 * contains a valid clk entry. The OPP nodes in DT may still in _update_opp_table_clk()
1491 * contain "opp-hz" property though, which we need to parse and in _update_opp_table_clk()
1492 * allow the platform to find an OPP based on freq later on. in _update_opp_table_clk()
1496 * frequency in opp->rates and also parse the entries in DT. in _update_opp_table_clk()
1498 opp_table->clk_count = 1; in _update_opp_table_clk()
1511 * We need to make sure that the OPP table for a device doesn't get added twice,
1519 * indirect users of OPP core.
1523 * of adding an OPP table and others should wait for it to finish.
1538 * The opp_tables list or an OPP table's dev_list is getting updated by in _add_opp_table_indexed()
1556 opp_table = ERR_PTR(-ENOMEM); in _add_opp_table_indexed()
1565 list_add(&opp_table->node, &opp_tables); in _add_opp_table_indexed()
1594 list_del(&opp_table->node); in _opp_table_kref_release()
1597 if (opp_table->current_opp) in _opp_table_kref_release()
1598 dev_pm_opp_put(opp_table->current_opp); in _opp_table_kref_release()
1603 if (!IS_ERR(opp_table->clk)) in _opp_table_kref_release()
1604 clk_put(opp_table->clk); in _opp_table_kref_release()
1606 if (opp_table->paths) { in _opp_table_kref_release()
1607 for (i = 0; i < opp_table->path_count; i++) in _opp_table_kref_release()
1608 icc_put(opp_table->paths[i]); in _opp_table_kref_release()
1609 kfree(opp_table->paths); in _opp_table_kref_release()
1612 WARN_ON(!list_empty(&opp_table->opp_list)); in _opp_table_kref_release()
1614 list_for_each_entry_safe(opp_dev, temp, &opp_table->dev_list, node) in _opp_table_kref_release()
1617 mutex_destroy(&opp_table->genpd_virt_dev_lock); in _opp_table_kref_release()
1618 mutex_destroy(&opp_table->lock); in _opp_table_kref_release()
1624 kref_put_mutex(&opp_table->kref, _opp_table_kref_release, in dev_pm_opp_put_opp_table()
1629 void _opp_free(struct dev_pm_opp *opp) in _opp_free() argument
1631 kfree(opp); in _opp_free()
1636 struct dev_pm_opp *opp = container_of(kref, struct dev_pm_opp, kref); in _opp_kref_release() local
1637 struct opp_table *opp_table = opp->opp_table; in _opp_kref_release()
1639 list_del(&opp->node); in _opp_kref_release()
1640 mutex_unlock(&opp_table->lock); in _opp_kref_release()
1646 blocking_notifier_call_chain(&opp_table->head, OPP_EVENT_REMOVE, opp); in _opp_kref_release()
1647 _of_clear_opp(opp_table, opp); in _opp_kref_release()
1648 opp_debug_remove_one(opp); in _opp_kref_release()
1649 kfree(opp); in _opp_kref_release()
1652 void dev_pm_opp_get(struct dev_pm_opp *opp) in dev_pm_opp_get() argument
1654 kref_get(&opp->kref); in dev_pm_opp_get()
1657 void dev_pm_opp_put(struct dev_pm_opp *opp) in dev_pm_opp_put() argument
1659 kref_put_mutex(&opp->kref, _opp_kref_release, &opp->opp_table->lock); in dev_pm_opp_put()
1664 * dev_pm_opp_remove() - Remove an OPP from OPP table
1666 * @freq: OPP to remove with matching 'freq'
1668 * This function removes an opp from the opp table.
1672 struct dev_pm_opp *opp = NULL, *iter; in dev_pm_opp_remove() local
1682 mutex_lock(&opp_table->lock); in dev_pm_opp_remove()
1684 list_for_each_entry(iter, &opp_table->opp_list, node) { in dev_pm_opp_remove()
1685 if (iter->rates[0] == freq) { in dev_pm_opp_remove()
1686 opp = iter; in dev_pm_opp_remove()
1691 mutex_unlock(&opp_table->lock); in dev_pm_opp_remove()
1693 if (opp) { in dev_pm_opp_remove()
1694 dev_pm_opp_put(opp); in dev_pm_opp_remove()
1699 dev_warn(dev, "%s: Couldn't find OPP with freq: %lu\n", in dev_pm_opp_remove()
1712 struct dev_pm_opp *opp = NULL, *temp; in _opp_get_next() local
1714 mutex_lock(&opp_table->lock); in _opp_get_next()
1715 list_for_each_entry(temp, &opp_table->opp_list, node) { in _opp_get_next()
1717 * Refcount must be dropped only once for each OPP by OPP core, in _opp_get_next()
1720 if (!temp->removed && dynamic == temp->dynamic) { in _opp_get_next()
1721 opp = temp; in _opp_get_next()
1726 mutex_unlock(&opp_table->lock); in _opp_get_next()
1727 return opp; in _opp_get_next()
1733 * called without the opp_table->lock held.
1737 struct dev_pm_opp *opp; in _opp_remove_all() local
1739 while ((opp = _opp_get_next(opp_table, dynamic))) { in _opp_remove_all()
1740 opp->removed = true; in _opp_remove_all()
1741 dev_pm_opp_put(opp); in _opp_remove_all()
1751 mutex_lock(&opp_table->lock); in _opp_remove_all_static()
1753 if (!opp_table->parsed_static_opps) { in _opp_remove_all_static()
1754 mutex_unlock(&opp_table->lock); in _opp_remove_all_static()
1758 if (--opp_table->parsed_static_opps) { in _opp_remove_all_static()
1759 mutex_unlock(&opp_table->lock); in _opp_remove_all_static()
1763 mutex_unlock(&opp_table->lock); in _opp_remove_all_static()
1770 * dev_pm_opp_remove_all_dynamic() - Remove all dynamically created OPPs
1773 * This function removes all dynamically created OPPs from the opp table.
1792 struct dev_pm_opp *opp; in _opp_allocate() local
1796 supply_count = opp_table->regulator_count > 0 ? in _opp_allocate()
1797 opp_table->regulator_count : 1; in _opp_allocate()
1798 supply_size = sizeof(*opp->supplies) * supply_count; in _opp_allocate()
1799 clk_size = sizeof(*opp->rates) * opp_table->clk_count; in _opp_allocate()
1800 icc_size = sizeof(*opp->bandwidth) * opp_table->path_count; in _opp_allocate()
1802 /* allocate new OPP node and supplies structures */ in _opp_allocate()
1803 opp = kzalloc(sizeof(*opp) + supply_size + clk_size + icc_size, GFP_KERNEL); in _opp_allocate()
1804 if (!opp) in _opp_allocate()
1807 /* Put the supplies, bw and clock at the end of the OPP structure */ in _opp_allocate()
1808 opp->supplies = (struct dev_pm_opp_supply *)(opp + 1); in _opp_allocate()
1810 opp->rates = (unsigned long *)(opp->supplies + supply_count); in _opp_allocate()
1813 opp->bandwidth = (struct dev_pm_opp_icc_bw *)(opp->rates + opp_table->clk_count); in _opp_allocate()
1815 INIT_LIST_HEAD(&opp->node); in _opp_allocate()
1817 return opp; in _opp_allocate()
1820 static bool _opp_supported_by_regulators(struct dev_pm_opp *opp, in _opp_supported_by_regulators() argument
1826 if (!opp_table->regulators) in _opp_supported_by_regulators()
1829 for (i = 0; i < opp_table->regulator_count; i++) { in _opp_supported_by_regulators()
1830 reg = opp_table->regulators[i]; in _opp_supported_by_regulators()
1833 opp->supplies[i].u_volt_min, in _opp_supported_by_regulators()
1834 opp->supplies[i].u_volt_max)) { in _opp_supported_by_regulators()
1835 pr_warn("%s: OPP minuV: %lu maxuV: %lu, not supported by regulator\n", in _opp_supported_by_regulators()
1836 __func__, opp->supplies[i].u_volt_min, in _opp_supported_by_regulators()
1837 opp->supplies[i].u_volt_max); in _opp_supported_by_regulators()
1850 for (i = 0; i < opp_table->clk_count; i++) { in _opp_compare_rate()
1851 if (opp1->rates[i] != opp2->rates[i]) in _opp_compare_rate()
1852 return opp1->rates[i] < opp2->rates[i] ? -1 : 1; in _opp_compare_rate()
1864 for (i = 0; i < opp_table->path_count; i++) { in _opp_compare_bw()
1865 if (opp1->bandwidth[i].peak != opp2->bandwidth[i].peak) in _opp_compare_bw()
1866 return opp1->bandwidth[i].peak < opp2->bandwidth[i].peak ? -1 : 1; in _opp_compare_bw()
1877 * -1: opp1 < opp2
1892 if (opp1->level != opp2->level) in _opp_compare_key()
1893 return opp1->level < opp2->level ? -1 : 1; in _opp_compare_key()
1903 struct dev_pm_opp *opp; in _opp_is_duplicate() local
1907 * Insert new OPP in order of increasing frequency and discard if in _opp_is_duplicate()
1910 * Need to use &opp_table->opp_list in the condition part of the 'for' in _opp_is_duplicate()
1914 list_for_each_entry(opp, &opp_table->opp_list, node) { in _opp_is_duplicate()
1915 opp_cmp = _opp_compare_key(opp_table, new_opp, opp); in _opp_is_duplicate()
1917 *head = &opp->node; in _opp_is_duplicate()
1926 __func__, opp->rates[0], opp->supplies[0].u_volt, in _opp_is_duplicate()
1927 opp->available, new_opp->rates[0], in _opp_is_duplicate()
1928 new_opp->supplies[0].u_volt, new_opp->available); in _opp_is_duplicate()
1931 return opp->available && in _opp_is_duplicate()
1932 new_opp->supplies[0].u_volt == opp->supplies[0].u_volt ? -EBUSY : -EEXIST; in _opp_is_duplicate()
1938 void _required_opps_available(struct dev_pm_opp *opp, int count) in _required_opps_available() argument
1943 if (opp->required_opps[i]->available) in _required_opps_available()
1946 opp->available = false; in _required_opps_available()
1947 pr_warn("%s: OPP not supported by required OPP %pOF (%lu)\n", in _required_opps_available()
1948 __func__, opp->required_opps[i]->np, opp->rates[0]); in _required_opps_available()
1956 * -EBUSY: For OPP with same freq/volt and is available. The callers of
1957 * _opp_add() must return 0 if they receive -EBUSY from it. This is to make
1959 * kernel try to initialize the OPP table.
1960 * -EEXIST: For OPP with same freq but different volt or is unavailable. This
1969 mutex_lock(&opp_table->lock); in _opp_add()
1970 head = &opp_table->opp_list; in _opp_add()
1974 mutex_unlock(&opp_table->lock); in _opp_add()
1978 list_add(&new_opp->node, head); in _opp_add()
1979 mutex_unlock(&opp_table->lock); in _opp_add()
1981 new_opp->opp_table = opp_table; in _opp_add()
1982 kref_init(&new_opp->kref); in _opp_add()
1987 new_opp->available = false; in _opp_add()
1988 dev_warn(dev, "%s: OPP not supported by regulators (%lu)\n", in _opp_add()
1989 __func__, new_opp->rates[0]); in _opp_add()
1992 /* required-opps not fully initialized yet */ in _opp_add()
1996 _required_opps_available(new_opp, opp_table->required_opp_count); in _opp_add()
2002 * _opp_add_v1() - Allocate a OPP based on v1 bindings.
2003 * @opp_table: OPP table
2005 * @freq: Frequency in Hz for this OPP
2006 * @u_volt: Voltage in uVolts for this OPP
2009 * This function adds an opp definition to the opp table and returns status.
2010 * The opp is made available by default and it can be controlled using
2018 * Duplicate OPPs (both freq and volt are same) and opp->available
2019 * -EEXIST Freq are same and volt are different OR
2020 * Duplicate OPPs (both freq and volt are same) and !opp->available
2021 * -ENOMEM Memory allocation failure
2031 return -EINVAL; in _opp_add_v1()
2035 return -ENOMEM; in _opp_add_v1()
2037 /* populate the opp table */ in _opp_add_v1()
2038 new_opp->rates[0] = freq; in _opp_add_v1()
2039 tol = u_volt * opp_table->voltage_tolerance_v1 / 100; in _opp_add_v1()
2040 new_opp->supplies[0].u_volt = u_volt; in _opp_add_v1()
2041 new_opp->supplies[0].u_volt_min = u_volt - tol; in _opp_add_v1()
2042 new_opp->supplies[0].u_volt_max = u_volt + tol; in _opp_add_v1()
2043 new_opp->available = true; in _opp_add_v1()
2044 new_opp->dynamic = dynamic; in _opp_add_v1()
2049 if (ret == -EBUSY) in _opp_add_v1()
2058 blocking_notifier_call_chain(&opp_table->head, OPP_EVENT_ADD, new_opp); in _opp_add_v1()
2068 * _opp_set_supported_hw() - Set supported platforms
2069 * @dev: Device for which supported-hw has to be set.
2074 * specify the hierarchy of versions it supports. OPP layer will then enable
2075 * OPPs, which are available for those versions, based on its 'opp-supported-hw'
2081 /* Another CPU that shares the OPP table has set the property ? */ in _opp_set_supported_hw()
2082 if (opp_table->supported_hw) in _opp_set_supported_hw()
2085 opp_table->supported_hw = kmemdup(versions, count * sizeof(*versions), in _opp_set_supported_hw()
2087 if (!opp_table->supported_hw) in _opp_set_supported_hw()
2088 return -ENOMEM; in _opp_set_supported_hw()
2090 opp_table->supported_hw_count = count; in _opp_set_supported_hw()
2096 * _opp_put_supported_hw() - Releases resources blocked for supported hw
2097 * @opp_table: OPP table returned by _opp_set_supported_hw().
2105 if (opp_table->supported_hw) { in _opp_put_supported_hw()
2106 kfree(opp_table->supported_hw); in _opp_put_supported_hw()
2107 opp_table->supported_hw = NULL; in _opp_put_supported_hw()
2108 opp_table->supported_hw_count = 0; in _opp_put_supported_hw()
2113 * _opp_set_prop_name() - Set prop-extn name
2114 * @dev: Device for which the prop-name has to be set.
2119 * which the extension will apply are opp-microvolt and opp-microamp. OPP core
2120 * should postfix the property name with -<name> while looking for them.
2124 /* Another CPU that shares the OPP table has set the property ? */ in _opp_set_prop_name()
2125 if (!opp_table->prop_name) { in _opp_set_prop_name()
2126 opp_table->prop_name = kstrdup(name, GFP_KERNEL); in _opp_set_prop_name()
2127 if (!opp_table->prop_name) in _opp_set_prop_name()
2128 return -ENOMEM; in _opp_set_prop_name()
2135 * _opp_put_prop_name() - Releases resources blocked for prop-name
2136 * @opp_table: OPP table returned by _opp_set_prop_name().
2144 if (opp_table->prop_name) { in _opp_put_prop_name()
2145 kfree(opp_table->prop_name); in _opp_put_prop_name()
2146 opp_table->prop_name = NULL; in _opp_put_prop_name()
2151 * _opp_set_regulators() - Set regulator names for the device
2156 * In order to support OPP switching, OPP layer needs to know the name of the
2174 return -EINVAL; in _opp_set_regulators()
2176 /* Another CPU that shares the OPP table has set the regulators ? */ in _opp_set_regulators()
2177 if (opp_table->regulators) in _opp_set_regulators()
2180 opp_table->regulators = kmalloc_array(count, in _opp_set_regulators()
2181 sizeof(*opp_table->regulators), in _opp_set_regulators()
2183 if (!opp_table->regulators) in _opp_set_regulators()
2184 return -ENOMEM; in _opp_set_regulators()
2195 opp_table->regulators[i] = reg; in _opp_set_regulators()
2198 opp_table->regulator_count = count; in _opp_set_regulators()
2202 opp_table->config_regulators = _opp_config_regulator_single; in _opp_set_regulators()
2208 regulator_put(opp_table->regulators[--i]); in _opp_set_regulators()
2210 kfree(opp_table->regulators); in _opp_set_regulators()
2211 opp_table->regulators = NULL; in _opp_set_regulators()
2212 opp_table->regulator_count = -1; in _opp_set_regulators()
2218 * _opp_put_regulators() - Releases resources blocked for regulator
2219 * @opp_table: OPP table returned from _opp_set_regulators().
2225 if (!opp_table->regulators) in _opp_put_regulators()
2228 if (opp_table->enabled) { in _opp_put_regulators()
2229 for (i = opp_table->regulator_count - 1; i >= 0; i--) in _opp_put_regulators()
2230 regulator_disable(opp_table->regulators[i]); in _opp_put_regulators()
2233 for (i = opp_table->regulator_count - 1; i >= 0; i--) in _opp_put_regulators()
2234 regulator_put(opp_table->regulators[i]); in _opp_put_regulators()
2236 kfree(opp_table->regulators); in _opp_put_regulators()
2237 opp_table->regulators = NULL; in _opp_put_regulators()
2238 opp_table->regulator_count = -1; in _opp_put_regulators()
2245 for (i = count - 1; i >= 0; i--) in _put_clks()
2246 clk_put(opp_table->clks[i]); in _put_clks()
2248 kfree(opp_table->clks); in _put_clks()
2249 opp_table->clks = NULL; in _put_clks()
2253 * _opp_set_clknames() - Set clk names for the device
2257 * In order to support OPP switching, OPP layer needs to get pointers to the
2259 * (i.e. by passing connection-id as NULL), but for a device with multiple
2260 * clocks available, the OPP core needs to know the exact names of the clks to
2286 return -EINVAL; in _opp_set_clknames()
2288 /* Another CPU that shares the OPP table has set the clkname ? */ in _opp_set_clknames()
2289 if (opp_table->clks) in _opp_set_clknames()
2292 opp_table->clks = kmalloc_array(count, sizeof(*opp_table->clks), in _opp_set_clknames()
2294 if (!opp_table->clks) in _opp_set_clknames()
2295 return -ENOMEM; in _opp_set_clknames()
2307 opp_table->clks[i] = clk; in _opp_set_clknames()
2310 opp_table->clk_count = count; in _opp_set_clknames()
2311 opp_table->config_clks = config_clks; in _opp_set_clknames()
2315 if (!opp_table->config_clks) in _opp_set_clknames()
2316 opp_table->config_clks = _opp_config_clk_single; in _opp_set_clknames()
2323 * - avoiding clks[0] everywhere else. in _opp_set_clknames()
2324 * - not running single clk helpers for multiple clk usecase by in _opp_set_clknames()
2327 * Since this is single-clk case, just update the clk pointer in _opp_set_clknames()
2330 opp_table->clk = opp_table->clks[0]; in _opp_set_clknames()
2341 * _opp_put_clknames() - Releases resources blocked for clks.
2342 * @opp_table: OPP table returned from _opp_set_clknames().
2346 if (!opp_table->clks) in _opp_put_clknames()
2349 opp_table->config_clks = NULL; in _opp_put_clknames()
2350 opp_table->clk = ERR_PTR(-ENODEV); in _opp_put_clknames()
2352 _put_clks(opp_table, opp_table->clk_count); in _opp_put_clknames()
2356 * _opp_set_config_regulators_helper() - Register custom set regulator helper.
2367 /* Another CPU that shares the OPP table has set the helper ? */ in _opp_set_config_regulators_helper()
2368 if (!opp_table->config_regulators) in _opp_set_config_regulators_helper()
2369 opp_table->config_regulators = config_regulators; in _opp_set_config_regulators_helper()
2375 * _opp_put_config_regulators_helper() - Releases resources blocked for
2377 * @opp_table: OPP table returned from _opp_set_config_regulators_helper().
2383 if (opp_table->config_regulators) in _opp_put_config_regulators_helper()
2384 opp_table->config_regulators = NULL; in _opp_put_config_regulators_helper()
2391 if (!opp_table->genpd_virt_devs) in _detach_genpd()
2394 for (index = 0; index < opp_table->required_opp_count; index++) { in _detach_genpd()
2395 if (!opp_table->genpd_virt_devs[index]) in _detach_genpd()
2398 dev_pm_domain_detach(opp_table->genpd_virt_devs[index], false); in _detach_genpd()
2399 opp_table->genpd_virt_devs[index] = NULL; in _detach_genpd()
2402 kfree(opp_table->genpd_virt_devs); in _detach_genpd()
2403 opp_table->genpd_virt_devs = NULL; in _detach_genpd()
2407 * _opp_attach_genpd - Attach genpd(s) for the device and save virtual device pointer
2413 * virtual genpd devices, which are created for each consumer device - genpd
2415 * and are required by the OPP core to set the performance state of the genpd.
2423 * Otherwise the original device structure will be used instead by the OPP core.
2426 * "required-opps" are added in DT.
2432 int index = 0, ret = -EINVAL; in _opp_attach_genpd()
2435 if (opp_table->genpd_virt_devs) in _opp_attach_genpd()
2439 * If the genpd's OPP table isn't already initialized, parsing of the in _opp_attach_genpd()
2440 * required-opps fail for dev. We should retry this after genpd's OPP in _opp_attach_genpd()
2443 if (!opp_table->required_opp_count) in _opp_attach_genpd()
2444 return -EPROBE_DEFER; in _opp_attach_genpd()
2446 mutex_lock(&opp_table->genpd_virt_dev_lock); in _opp_attach_genpd()
2448 opp_table->genpd_virt_devs = kcalloc(opp_table->required_opp_count, in _opp_attach_genpd()
2449 sizeof(*opp_table->genpd_virt_devs), in _opp_attach_genpd()
2451 if (!opp_table->genpd_virt_devs) in _opp_attach_genpd()
2455 if (index >= opp_table->required_opp_count) { in _opp_attach_genpd()
2456 dev_err(dev, "Index can't be greater than required-opp-count - 1, %s (%d : %d)\n", in _opp_attach_genpd()
2457 *name, opp_table->required_opp_count, index); in _opp_attach_genpd()
2463 ret = virt_dev ? PTR_ERR(virt_dev) : -ENODEV; in _opp_attach_genpd()
2468 opp_table->genpd_virt_devs[index] = virt_dev; in _opp_attach_genpd()
2474 *virt_devs = opp_table->genpd_virt_devs; in _opp_attach_genpd()
2475 mutex_unlock(&opp_table->genpd_virt_dev_lock); in _opp_attach_genpd()
2482 mutex_unlock(&opp_table->genpd_virt_dev_lock); in _opp_attach_genpd()
2488 * _opp_detach_genpd() - Detach genpd(s) from the device.
2489 * @opp_table: OPP table returned by _opp_attach_genpd().
2492 * OPP table.
2500 mutex_lock(&opp_table->genpd_virt_dev_lock); in _opp_detach_genpd()
2502 mutex_unlock(&opp_table->genpd_virt_dev_lock); in _opp_detach_genpd()
2507 if (data->flags & OPP_CONFIG_GENPD) in _opp_clear_config()
2508 _opp_detach_genpd(data->opp_table); in _opp_clear_config()
2509 if (data->flags & OPP_CONFIG_REGULATOR) in _opp_clear_config()
2510 _opp_put_regulators(data->opp_table); in _opp_clear_config()
2511 if (data->flags & OPP_CONFIG_SUPPORTED_HW) in _opp_clear_config()
2512 _opp_put_supported_hw(data->opp_table); in _opp_clear_config()
2513 if (data->flags & OPP_CONFIG_REGULATOR_HELPER) in _opp_clear_config()
2514 _opp_put_config_regulators_helper(data->opp_table); in _opp_clear_config()
2515 if (data->flags & OPP_CONFIG_PROP_NAME) in _opp_clear_config()
2516 _opp_put_prop_name(data->opp_table); in _opp_clear_config()
2517 if (data->flags & OPP_CONFIG_CLK) in _opp_clear_config()
2518 _opp_put_clknames(data->opp_table); in _opp_clear_config()
2520 dev_pm_opp_put_opp_table(data->opp_table); in _opp_clear_config()
2525 * dev_pm_opp_set_config() - Set OPP configuration for the device.
2527 * @config: OPP configuration.
2529 * This allows all device OPP configurations to be performed at once.
2532 * be called multiple times for the same OPP table, for example once for each
2534 * calls to dev_pm_opp_clear_config() in order to free the OPP table properly.
2550 return -ENOMEM; in dev_pm_opp_set_config()
2558 data->opp_table = opp_table; in dev_pm_opp_set_config()
2559 data->flags = 0; in dev_pm_opp_set_config()
2562 if (WARN_ON(!list_empty(&opp_table->opp_list))) { in dev_pm_opp_set_config()
2563 ret = -EBUSY; in dev_pm_opp_set_config()
2568 if (config->clk_names) { in dev_pm_opp_set_config()
2569 ret = _opp_set_clknames(opp_table, dev, config->clk_names, in dev_pm_opp_set_config()
2570 config->config_clks); in dev_pm_opp_set_config()
2574 data->flags |= OPP_CONFIG_CLK; in dev_pm_opp_set_config()
2575 } else if (config->config_clks) { in dev_pm_opp_set_config()
2577 ret = -EINVAL; in dev_pm_opp_set_config()
2582 if (config->prop_name) { in dev_pm_opp_set_config()
2583 ret = _opp_set_prop_name(opp_table, config->prop_name); in dev_pm_opp_set_config()
2587 data->flags |= OPP_CONFIG_PROP_NAME; in dev_pm_opp_set_config()
2591 if (config->config_regulators) { in dev_pm_opp_set_config()
2593 config->config_regulators); in dev_pm_opp_set_config()
2597 data->flags |= OPP_CONFIG_REGULATOR_HELPER; in dev_pm_opp_set_config()
2601 if (config->supported_hw) { in dev_pm_opp_set_config()
2602 ret = _opp_set_supported_hw(opp_table, config->supported_hw, in dev_pm_opp_set_config()
2603 config->supported_hw_count); in dev_pm_opp_set_config()
2607 data->flags |= OPP_CONFIG_SUPPORTED_HW; in dev_pm_opp_set_config()
2611 if (config->regulator_names) { in dev_pm_opp_set_config()
2613 config->regulator_names); in dev_pm_opp_set_config()
2617 data->flags |= OPP_CONFIG_REGULATOR; in dev_pm_opp_set_config()
2621 if (config->genpd_names) { in dev_pm_opp_set_config()
2622 ret = _opp_attach_genpd(opp_table, dev, config->genpd_names, in dev_pm_opp_set_config()
2623 config->virt_devs); in dev_pm_opp_set_config()
2627 data->flags |= OPP_CONFIG_GENPD; in dev_pm_opp_set_config()
2644 * dev_pm_opp_clear_config() - Releases resources blocked for OPP configuration.
2645 * @opp_table: OPP table returned from dev_pm_opp_set_config().
2647 * This allows all device OPP configurations to be cleared at once. This must be
2651 * Currently the first call itself ends up freeing all the OPP configurations,
2652 * while the later ones only drop the OPP table reference. This works well for
2653 * now as we would never want to use an half initialized OPP table and want to
2681 * devm_pm_opp_set_config() - Set OPP configuration for the device.
2683 * @config: OPP configuration.
2685 * This allows all device OPP configurations to be performed at once.
2686 * This is a resource-managed variant of dev_pm_opp_set_config().
2703 * dev_pm_opp_xlate_required_opp() - Find required OPP for @src_table OPP.
2704 * @src_table: OPP table which has @dst_table as one of its required OPP table.
2705 * @dst_table: Required OPP table of the @src_table.
2706 * @src_opp: OPP from the @src_table.
2708 * This function returns the OPP (present in @dst_table) pointed out by the
2709 * "required-opps" property of the @src_opp (present in @src_table).
2711 * The callers are required to call dev_pm_opp_put() for the returned OPP after
2720 struct dev_pm_opp *opp, *dest_opp = ERR_PTR(-ENODEV); in dev_pm_opp_xlate_required_opp() local
2724 !src_table->required_opp_tables) in dev_pm_opp_xlate_required_opp()
2725 return ERR_PTR(-EINVAL); in dev_pm_opp_xlate_required_opp()
2727 /* required-opps not fully initialized yet */ in dev_pm_opp_xlate_required_opp()
2729 return ERR_PTR(-EBUSY); in dev_pm_opp_xlate_required_opp()
2731 for (i = 0; i < src_table->required_opp_count; i++) { in dev_pm_opp_xlate_required_opp()
2732 if (src_table->required_opp_tables[i] == dst_table) { in dev_pm_opp_xlate_required_opp()
2733 mutex_lock(&src_table->lock); in dev_pm_opp_xlate_required_opp()
2735 list_for_each_entry(opp, &src_table->opp_list, node) { in dev_pm_opp_xlate_required_opp()
2736 if (opp == src_opp) { in dev_pm_opp_xlate_required_opp()
2737 dest_opp = opp->required_opps[i]; in dev_pm_opp_xlate_required_opp()
2743 mutex_unlock(&src_table->lock); in dev_pm_opp_xlate_required_opp()
2749 pr_err("%s: Couldn't find matching OPP (%p: %p)\n", __func__, in dev_pm_opp_xlate_required_opp()
2758 * dev_pm_opp_xlate_performance_state() - Find required OPP's pstate for src_table.
2759 * @src_table: OPP table which has dst_table as one of its required OPP table.
2760 * @dst_table: Required OPP table of the src_table.
2763 * This Returns pstate of the OPP (present in @dst_table) pointed out by the
2764 * "required-opps" property of the OPP (present in @src_table) which has
2774 struct dev_pm_opp *opp; in dev_pm_opp_xlate_performance_state() local
2775 int dest_pstate = -EINVAL; in dev_pm_opp_xlate_performance_state()
2782 * and so none of them have the "required-opps" property set. Return the in dev_pm_opp_xlate_performance_state()
2785 if (!src_table || !src_table->required_opp_count) in dev_pm_opp_xlate_performance_state()
2788 /* Both OPP tables must belong to genpds */ in dev_pm_opp_xlate_performance_state()
2789 if (unlikely(!src_table->is_genpd || !dst_table->is_genpd)) { in dev_pm_opp_xlate_performance_state()
2791 return -EINVAL; in dev_pm_opp_xlate_performance_state()
2794 /* required-opps not fully initialized yet */ in dev_pm_opp_xlate_performance_state()
2796 return -EBUSY; in dev_pm_opp_xlate_performance_state()
2798 for (i = 0; i < src_table->required_opp_count; i++) { in dev_pm_opp_xlate_performance_state()
2799 if (src_table->required_opp_tables[i]->np == dst_table->np) in dev_pm_opp_xlate_performance_state()
2803 if (unlikely(i == src_table->required_opp_count)) { in dev_pm_opp_xlate_performance_state()
2804 pr_err("%s: Couldn't find matching OPP table (%p: %p)\n", in dev_pm_opp_xlate_performance_state()
2806 return -EINVAL; in dev_pm_opp_xlate_performance_state()
2809 mutex_lock(&src_table->lock); in dev_pm_opp_xlate_performance_state()
2811 list_for_each_entry(opp, &src_table->opp_list, node) { in dev_pm_opp_xlate_performance_state()
2812 if (opp->level == pstate) { in dev_pm_opp_xlate_performance_state()
2813 dest_pstate = opp->required_opps[i]->level; in dev_pm_opp_xlate_performance_state()
2818 pr_err("%s: Couldn't find matching OPP (%p: %p)\n", __func__, src_table, in dev_pm_opp_xlate_performance_state()
2822 mutex_unlock(&src_table->lock); in dev_pm_opp_xlate_performance_state()
2828 * dev_pm_opp_add() - Add an OPP table from a table definitions
2830 * @freq: Frequency in Hz for this OPP
2831 * @u_volt: Voltage in uVolts for this OPP
2833 * This function adds an opp definition to the opp table and returns status.
2834 * The opp is made available by default and it can be controlled using
2839 * Duplicate OPPs (both freq and volt are same) and opp->available
2840 * -EEXIST Freq are same and volt are different OR
2841 * Duplicate OPPs (both freq and volt are same) and !opp->available
2842 * -ENOMEM Memory allocation failure
2854 opp_table->regulator_count = 1; in dev_pm_opp_add()
2865 * _opp_set_availability() - helper to set the availability of an opp
2867 * @freq: OPP frequency to modify availability
2868 * @availability_req: availability status requested for this opp
2870 * Set the availability of an OPP, opp_{enable,disable} share a common logic
2873 * Return: -EINVAL for bad pointers, -ENOMEM if no memory available for the
2881 struct dev_pm_opp *tmp_opp, *opp = ERR_PTR(-ENODEV); in _opp_set_availability() local
2888 dev_warn(dev, "%s: Device OPP not found (%d)\n", __func__, r); in _opp_set_availability()
2893 r = -EINVAL; in _opp_set_availability()
2897 mutex_lock(&opp_table->lock); in _opp_set_availability()
2900 list_for_each_entry(tmp_opp, &opp_table->opp_list, node) { in _opp_set_availability()
2901 if (tmp_opp->rates[0] == freq) { in _opp_set_availability()
2902 opp = tmp_opp; in _opp_set_availability()
2907 if (IS_ERR(opp)) { in _opp_set_availability()
2908 r = PTR_ERR(opp); in _opp_set_availability()
2913 if (opp->available == availability_req) in _opp_set_availability()
2916 opp->available = availability_req; in _opp_set_availability()
2918 dev_pm_opp_get(opp); in _opp_set_availability()
2919 mutex_unlock(&opp_table->lock); in _opp_set_availability()
2921 /* Notify the change of the OPP availability */ in _opp_set_availability()
2923 blocking_notifier_call_chain(&opp_table->head, OPP_EVENT_ENABLE, in _opp_set_availability()
2924 opp); in _opp_set_availability()
2926 blocking_notifier_call_chain(&opp_table->head, in _opp_set_availability()
2927 OPP_EVENT_DISABLE, opp); in _opp_set_availability()
2929 dev_pm_opp_put(opp); in _opp_set_availability()
2933 mutex_unlock(&opp_table->lock); in _opp_set_availability()
2940 * dev_pm_opp_adjust_voltage() - helper to change the voltage of an OPP
2942 * @freq: OPP frequency to adjust voltage of
2943 * @u_volt: new OPP target voltage
2944 * @u_volt_min: new OPP min voltage
2945 * @u_volt_max: new OPP max voltage
2947 * Return: -EINVAL for bad pointers, -ENOMEM if no memory available for the
2957 struct dev_pm_opp *tmp_opp, *opp = ERR_PTR(-ENODEV); in dev_pm_opp_adjust_voltage() local
2964 dev_warn(dev, "%s: Device OPP not found (%d)\n", __func__, r); in dev_pm_opp_adjust_voltage()
2969 r = -EINVAL; in dev_pm_opp_adjust_voltage()
2973 mutex_lock(&opp_table->lock); in dev_pm_opp_adjust_voltage()
2976 list_for_each_entry(tmp_opp, &opp_table->opp_list, node) { in dev_pm_opp_adjust_voltage()
2977 if (tmp_opp->rates[0] == freq) { in dev_pm_opp_adjust_voltage()
2978 opp = tmp_opp; in dev_pm_opp_adjust_voltage()
2983 if (IS_ERR(opp)) { in dev_pm_opp_adjust_voltage()
2984 r = PTR_ERR(opp); in dev_pm_opp_adjust_voltage()
2989 if (opp->supplies->u_volt == u_volt) in dev_pm_opp_adjust_voltage()
2992 opp->supplies->u_volt = u_volt; in dev_pm_opp_adjust_voltage()
2993 opp->supplies->u_volt_min = u_volt_min; in dev_pm_opp_adjust_voltage()
2994 opp->supplies->u_volt_max = u_volt_max; in dev_pm_opp_adjust_voltage()
2996 dev_pm_opp_get(opp); in dev_pm_opp_adjust_voltage()
2997 mutex_unlock(&opp_table->lock); in dev_pm_opp_adjust_voltage()
2999 /* Notify the voltage change of the OPP */ in dev_pm_opp_adjust_voltage()
3000 blocking_notifier_call_chain(&opp_table->head, OPP_EVENT_ADJUST_VOLTAGE, in dev_pm_opp_adjust_voltage()
3001 opp); in dev_pm_opp_adjust_voltage()
3003 dev_pm_opp_put(opp); in dev_pm_opp_adjust_voltage()
3007 mutex_unlock(&opp_table->lock); in dev_pm_opp_adjust_voltage()
3015 * dev_pm_opp_enable() - Enable a specific OPP
3017 * @freq: OPP frequency to enable
3019 * Enables a provided opp. If the operation is valid, this returns 0, else the
3020 * corresponding error value. It is meant to be used for users an OPP available
3023 * Return: -EINVAL for bad pointers, -ENOMEM if no memory available for the
3034 * dev_pm_opp_disable() - Disable a specific OPP
3036 * @freq: OPP frequency to disable
3038 * Disables a provided opp. If the operation is valid, this returns
3040 * control by users to make this OPP not available until the circumstances are
3043 * Return: -EINVAL for bad pointers, -ENOMEM if no memory available for the
3054 * dev_pm_opp_register_notifier() - Register OPP notifier for the device
3069 ret = blocking_notifier_chain_register(&opp_table->head, nb); in dev_pm_opp_register_notifier()
3078 * dev_pm_opp_unregister_notifier() - Unregister OPP notifier for the device
3094 ret = blocking_notifier_chain_unregister(&opp_table->head, nb); in dev_pm_opp_unregister_notifier()
3103 * dev_pm_opp_remove_table() - Free all OPPs associated with the device
3104 * @dev: device pointer used to lookup OPP table.
3118 if (error != -ENODEV) in dev_pm_opp_remove_table()
3127 * Drop the extra reference only if the OPP table was successfully added in dev_pm_opp_remove_table()
3139 * dev_pm_opp_sync_regulators() - Sync state of voltage regulators
3142 * Sync voltage state of the OPP table regulators.
3152 /* Device may not have OPP table */ in dev_pm_opp_sync_regulators()
3158 if (unlikely(!opp_table->regulators)) in dev_pm_opp_sync_regulators()
3162 if (!opp_table->enabled) in dev_pm_opp_sync_regulators()
3165 for (i = 0; i < opp_table->regulator_count; i++) { in dev_pm_opp_sync_regulators()
3166 reg = opp_table->regulators[i]; in dev_pm_opp_sync_regulators()