Lines Matching +full:opp +full:- +full:level
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 U32_MAX.
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
770 * @level: level to search for
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
783 unsigned int level) in dev_pm_opp_find_level_exact() argument
785 return _find_key_exact(dev, level, 0, true, _read_level, NULL); in dev_pm_opp_find_level_exact()
790 * dev_pm_opp_find_level_ceil() - search for an rounded up level
792 * @level: level to search for
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
805 unsigned int *level) in dev_pm_opp_find_level_ceil() argument
807 unsigned long temp = *level; in dev_pm_opp_find_level_ceil()
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()
811 if (IS_ERR(opp)) in dev_pm_opp_find_level_ceil()
812 return opp; in dev_pm_opp_find_level_ceil()
816 dev_err(dev, "%s: OPP levels aren't available\n", __func__); in dev_pm_opp_find_level_ceil()
817 dev_pm_opp_put(opp); in dev_pm_opp_find_level_ceil()
818 return ERR_PTR(-ENODEV); in dev_pm_opp_find_level_ceil()
821 *level = temp; in dev_pm_opp_find_level_ceil()
822 return opp; in dev_pm_opp_find_level_ceil()
827 * dev_pm_opp_find_level_floor() - Search for a rounded floor level
829 * @level: Start level
831 * Search for the matching floor *available* OPP from a starting level
834 * Return: matching *opp and refreshes *level accordingly, else returns
841 * The callers are required to call dev_pm_opp_put() for the returned OPP after
845 unsigned int *level) in dev_pm_opp_find_level_floor() argument
847 unsigned long temp = *level; in dev_pm_opp_find_level_floor()
848 struct dev_pm_opp *opp; in dev_pm_opp_find_level_floor() local
850 opp = _find_key_floor(dev, &temp, 0, true, _read_level, NULL); in dev_pm_opp_find_level_floor()
851 *level = temp; in dev_pm_opp_find_level_floor()
852 return opp; in dev_pm_opp_find_level_floor()
857 * dev_pm_opp_find_bw_ceil() - Search for a rounded ceil bandwidth
862 * Search for the matching floor *available* OPP from a starting bandwidth
865 * Return: matching *opp and refreshes *bw accordingly, else returns
872 * The callers are required to call dev_pm_opp_put() for the returned OPP after
879 struct dev_pm_opp *opp; in dev_pm_opp_find_bw_ceil() local
881 opp = _find_key_ceil(dev, &temp, index, true, _read_bw, NULL); in dev_pm_opp_find_bw_ceil()
883 return opp; in dev_pm_opp_find_bw_ceil()
888 * dev_pm_opp_find_bw_floor() - Search for a rounded floor bandwidth
893 * Search for the matching floor *available* OPP from a starting bandwidth
896 * Return: matching *opp and refreshes *bw accordingly, else returns
903 * The callers are required to call dev_pm_opp_put() for the returned OPP after
910 struct dev_pm_opp *opp; in dev_pm_opp_find_bw_floor() local
912 opp = _find_key_floor(dev, &temp, index, true, _read_bw, NULL); in dev_pm_opp_find_bw_floor()
914 return opp; in dev_pm_opp_find_bw_floor()
931 supply->u_volt_min, supply->u_volt, supply->u_volt_max); in _set_opp_voltage()
933 ret = regulator_set_voltage_triplet(reg, supply->u_volt_min, in _set_opp_voltage()
934 supply->u_volt, supply->u_volt_max); in _set_opp_voltage()
937 __func__, supply->u_volt_min, supply->u_volt, in _set_opp_voltage()
938 supply->u_volt_max, ret); in _set_opp_voltage()
945 struct dev_pm_opp *opp, void *data, bool scaling_down) in _opp_config_clk_single() argument
951 /* One of target and opp must be available */ in _opp_config_clk_single()
954 } else if (opp) { in _opp_config_clk_single()
955 freq = opp->rates[0]; in _opp_config_clk_single()
958 return -EINVAL; in _opp_config_clk_single()
961 ret = clk_set_rate(opp_table->clk, freq); in _opp_config_clk_single()
966 opp_table->current_rate_single_clk = freq; in _opp_config_clk_single()
977 struct opp_table *opp_table, struct dev_pm_opp *opp, void *data, in dev_pm_opp_config_clks_simple() argument
983 for (i = opp_table->clk_count - 1; i >= 0; i--) { in dev_pm_opp_config_clks_simple()
984 ret = clk_set_rate(opp_table->clks[i], opp->rates[i]); in dev_pm_opp_config_clks_simple()
992 for (i = 0; i < opp_table->clk_count; i++) { in dev_pm_opp_config_clks_simple()
993 ret = clk_set_rate(opp_table->clks[i], opp->rates[i]); in dev_pm_opp_config_clks_simple()
1016 return -EINVAL; in _opp_config_regulator_single()
1019 ret = _set_opp_voltage(dev, reg, new_opp->supplies); in _opp_config_regulator_single()
1025 * some boot-enabled regulators. in _opp_config_regulator_single()
1027 if (unlikely(!new_opp->opp_table->enabled)) { in _opp_config_regulator_single()
1037 struct dev_pm_opp *opp, struct device *dev) in _set_opp_bw() argument
1042 if (!opp_table->paths) in _set_opp_bw()
1045 for (i = 0; i < opp_table->path_count; i++) { in _set_opp_bw()
1046 if (!opp) { in _set_opp_bw()
1050 avg = opp->bandwidth[i].avg; in _set_opp_bw()
1051 peak = opp->bandwidth[i].peak; in _set_opp_bw()
1053 ret = icc_set_bw(opp_table->paths[i], avg, peak); in _set_opp_bw()
1056 opp ? "set" : "remove", i, ret); in _set_opp_bw()
1066 struct dev_pm_opp *opp, bool up) in _set_required_opps() argument
1068 struct device **devs = opp_table->required_devs; in _set_required_opps()
1075 /* required-opps not fully initialized yet */ in _set_required_opps()
1077 return -EBUSY; in _set_required_opps()
1082 target = opp_table->required_opp_count; in _set_required_opps()
1085 index = opp_table->required_opp_count - 1; in _set_required_opps()
1086 target = -1; in _set_required_opps()
1087 delta = -1; in _set_required_opps()
1092 required_opp = opp ? opp->required_opps[index] : NULL; in _set_required_opps()
1106 struct dev_pm_opp *opp) in _set_opp_level() argument
1108 unsigned int level = 0; in _set_opp_level() local
1111 if (opp) { in _set_opp_level()
1112 if (opp->level == OPP_LEVEL_UNSET) in _set_opp_level()
1115 level = opp->level; in _set_opp_level()
1119 ret = dev_pm_domain_set_performance_state(dev, level); in _set_opp_level()
1121 dev_err(dev, "Failed to set performance state %u (%d)\n", level, in _set_opp_level()
1129 struct dev_pm_opp *opp = ERR_PTR(-ENODEV); in _find_current_opp() local
1132 if (!IS_ERR(opp_table->clk)) { in _find_current_opp()
1133 freq = clk_get_rate(opp_table->clk); in _find_current_opp()
1134 opp = _find_freq_ceil(opp_table, &freq); in _find_current_opp()
1138 * Unable to find the current OPP ? Pick the first from the list since in _find_current_opp()
1142 if (IS_ERR(opp)) { in _find_current_opp()
1143 mutex_lock(&opp_table->lock); in _find_current_opp()
1144 opp = list_first_entry(&opp_table->opp_list, struct dev_pm_opp, node); in _find_current_opp()
1145 dev_pm_opp_get(opp); in _find_current_opp()
1146 mutex_unlock(&opp_table->lock); in _find_current_opp()
1149 opp_table->current_opp = opp; in _find_current_opp()
1156 if (!opp_table->enabled) in _disable_opp_table()
1161 * have OPP table for the device, while others don't and in _disable_opp_table()
1171 if (opp_table->regulators) in _disable_opp_table()
1172 regulator_disable(opp_table->regulators[0]); in _disable_opp_table()
1181 opp_table->enabled = false; in _disable_opp_table()
1186 struct dev_pm_opp *opp, void *clk_data, bool forced) in _set_opp() argument
1191 if (unlikely(!opp)) in _set_opp()
1194 /* Find the currently set OPP if we don't know already */ in _set_opp()
1195 if (unlikely(!opp_table->current_opp)) in _set_opp()
1198 old_opp = opp_table->current_opp; in _set_opp()
1201 if (!forced && old_opp == opp && opp_table->enabled) { in _set_opp()
1206 dev_dbg(dev, "%s: switching OPP: Freq %lu -> %lu Hz, Level %u -> %u, Bw %u -> %u\n", in _set_opp()
1207 __func__, old_opp->rates[0], opp->rates[0], old_opp->level, in _set_opp()
1208 opp->level, old_opp->bandwidth ? old_opp->bandwidth[0].peak : 0, in _set_opp()
1209 opp->bandwidth ? opp->bandwidth[0].peak : 0); in _set_opp()
1211 scaling_down = _opp_compare_key(opp_table, old_opp, opp); in _set_opp()
1212 if (scaling_down == -1) in _set_opp()
1217 ret = _set_required_opps(dev, opp_table, opp, true); in _set_opp()
1223 ret = _set_opp_level(dev, opp_table, opp); in _set_opp()
1227 ret = _set_opp_bw(opp_table, opp, dev); in _set_opp()
1233 if (opp_table->config_regulators) { in _set_opp()
1234 ret = opp_table->config_regulators(dev, old_opp, opp, in _set_opp()
1235 opp_table->regulators, in _set_opp()
1236 opp_table->regulator_count); in _set_opp()
1245 if (opp_table->config_clks) { in _set_opp()
1246 ret = opp_table->config_clks(dev, opp_table, opp, clk_data, scaling_down); in _set_opp()
1253 if (opp_table->config_regulators) { in _set_opp()
1254 ret = opp_table->config_regulators(dev, old_opp, opp, in _set_opp()
1255 opp_table->regulators, in _set_opp()
1256 opp_table->regulator_count); in _set_opp()
1264 ret = _set_opp_bw(opp_table, opp, dev); in _set_opp()
1270 ret = _set_opp_level(dev, opp_table, opp); in _set_opp()
1274 ret = _set_required_opps(dev, opp_table, opp, false); in _set_opp()
1281 opp_table->enabled = true; in _set_opp()
1285 dev_pm_opp_get(opp); in _set_opp()
1286 opp_table->current_opp = opp; in _set_opp()
1292 * dev_pm_opp_set_rate() - Configure new OPP based on frequency
1296 * This configures the power-supplies to the levels specified by the OPP
1299 * provided by the opp, should have already rounded to the target OPP's
1306 struct dev_pm_opp *opp = NULL; in dev_pm_opp_set_rate() local
1312 dev_err(dev, "%s: device's opp table doesn't exist\n", __func__); in dev_pm_opp_set_rate()
1318 * For IO devices which require an OPP on some platforms/SoCs in dev_pm_opp_set_rate()
1320 * we look for empty OPP tables with just a clock handle and in dev_pm_opp_set_rate()
1325 ret = opp_table->config_clks(dev, opp_table, NULL, in dev_pm_opp_set_rate()
1330 freq = clk_round_rate(opp_table->clk, target_freq); in dev_pm_opp_set_rate()
1336 * frequencies than the OPP table, don't update the frequency we in dev_pm_opp_set_rate()
1340 opp = _find_freq_ceil(opp_table, &temp_freq); in dev_pm_opp_set_rate()
1341 if (IS_ERR(opp)) { in dev_pm_opp_set_rate()
1342 ret = PTR_ERR(opp); in dev_pm_opp_set_rate()
1343 dev_err(dev, "%s: failed to find OPP for freq %lu (%d)\n", in dev_pm_opp_set_rate()
1349 * An OPP entry specifies the highest frequency at which other in dev_pm_opp_set_rate()
1350 * properties of the OPP entry apply. Even if the new OPP is in dev_pm_opp_set_rate()
1355 forced = opp_table->current_rate_single_clk != freq; in dev_pm_opp_set_rate()
1358 ret = _set_opp(dev, opp_table, opp, &freq, forced); in dev_pm_opp_set_rate()
1361 dev_pm_opp_put(opp); in dev_pm_opp_set_rate()
1370 * dev_pm_opp_set_opp() - Configure device for OPP
1372 * @opp: OPP to set to
1374 * This configures the device based on the properties of the OPP passed to this
1379 int dev_pm_opp_set_opp(struct device *dev, struct dev_pm_opp *opp) in dev_pm_opp_set_opp() argument
1386 dev_err(dev, "%s: device opp doesn't exist\n", __func__); in dev_pm_opp_set_opp()
1390 ret = _set_opp(dev, opp_table, opp, NULL, false); in dev_pm_opp_set_opp()
1397 /* OPP-dev Helpers */
1402 list_del(&opp_dev->node); in _remove_opp_dev()
1415 /* Initialize opp-dev */ in _add_opp_dev()
1416 opp_dev->dev = dev; in _add_opp_dev()
1418 mutex_lock(&opp_table->lock); in _add_opp_dev()
1419 list_add(&opp_dev->node, &opp_table->dev_list); in _add_opp_dev()
1420 mutex_unlock(&opp_table->lock); in _add_opp_dev()
1435 * Allocate a new OPP table. In the infrequent case where a new in _allocate_opp_table()
1440 return ERR_PTR(-ENOMEM); in _allocate_opp_table()
1442 mutex_init(&opp_table->lock); in _allocate_opp_table()
1443 INIT_LIST_HEAD(&opp_table->dev_list); in _allocate_opp_table()
1444 INIT_LIST_HEAD(&opp_table->lazy); in _allocate_opp_table()
1446 opp_table->clk = ERR_PTR(-ENODEV); in _allocate_opp_table()
1449 opp_table->regulator_count = -1; in _allocate_opp_table()
1453 ret = -ENOMEM; in _allocate_opp_table()
1462 if (ret == -EPROBE_DEFER) in _allocate_opp_table()
1469 BLOCKING_INIT_NOTIFIER_HEAD(&opp_table->head); in _allocate_opp_table()
1470 INIT_LIST_HEAD(&opp_table->opp_list); in _allocate_opp_table()
1471 kref_init(&opp_table->kref); in _allocate_opp_table()
1478 mutex_destroy(&opp_table->lock); in _allocate_opp_table()
1486 kref_get(&opp_table->kref); in _get_opp_table_kref()
1499 if (!getclk || IS_ERR(opp_table) || !IS_ERR(opp_table->clk) || in _update_opp_table_clk()
1500 opp_table->clks) in _update_opp_table_clk()
1504 opp_table->clk = clk_get(dev, NULL); in _update_opp_table_clk()
1506 ret = PTR_ERR_OR_ZERO(opp_table->clk); in _update_opp_table_clk()
1508 opp_table->config_clks = _opp_config_clk_single; in _update_opp_table_clk()
1509 opp_table->clk_count = 1; in _update_opp_table_clk()
1513 if (ret == -ENOENT) { in _update_opp_table_clk()
1515 * There are few platforms which don't want the OPP core to in _update_opp_table_clk()
1518 * contains a valid clk entry. The OPP nodes in DT may still in _update_opp_table_clk()
1519 * contain "opp-hz" property though, which we need to parse and in _update_opp_table_clk()
1520 * allow the platform to find an OPP based on freq later on. in _update_opp_table_clk()
1524 * frequency in opp->rates and also parse the entries in DT. in _update_opp_table_clk()
1526 opp_table->clk_count = 1; in _update_opp_table_clk()
1539 * We need to make sure that the OPP table for a device doesn't get added twice,
1547 * indirect users of OPP core.
1551 * of adding an OPP table and others should wait for it to finish.
1566 * The opp_tables list or an OPP table's dev_list is getting updated by in _add_opp_table_indexed()
1584 opp_table = ERR_PTR(-ENOMEM); in _add_opp_table_indexed()
1593 list_add(&opp_table->node, &opp_tables); in _add_opp_table_indexed()
1622 list_del(&opp_table->node); in _opp_table_kref_release()
1625 if (opp_table->current_opp) in _opp_table_kref_release()
1626 dev_pm_opp_put(opp_table->current_opp); in _opp_table_kref_release()
1631 if (!IS_ERR(opp_table->clk)) in _opp_table_kref_release()
1632 clk_put(opp_table->clk); in _opp_table_kref_release()
1634 if (opp_table->paths) { in _opp_table_kref_release()
1635 for (i = 0; i < opp_table->path_count; i++) in _opp_table_kref_release()
1636 icc_put(opp_table->paths[i]); in _opp_table_kref_release()
1637 kfree(opp_table->paths); in _opp_table_kref_release()
1640 WARN_ON(!list_empty(&opp_table->opp_list)); in _opp_table_kref_release()
1642 list_for_each_entry_safe(opp_dev, temp, &opp_table->dev_list, node) in _opp_table_kref_release()
1645 mutex_destroy(&opp_table->lock); in _opp_table_kref_release()
1651 kref_put_mutex(&opp_table->kref, _opp_table_kref_release, in dev_pm_opp_put_opp_table()
1656 void _opp_free(struct dev_pm_opp *opp) in _opp_free() argument
1658 kfree(opp); in _opp_free()
1663 struct dev_pm_opp *opp = container_of(kref, struct dev_pm_opp, kref); in _opp_kref_release() local
1664 struct opp_table *opp_table = opp->opp_table; in _opp_kref_release()
1666 list_del(&opp->node); in _opp_kref_release()
1667 mutex_unlock(&opp_table->lock); in _opp_kref_release()
1673 blocking_notifier_call_chain(&opp_table->head, OPP_EVENT_REMOVE, opp); in _opp_kref_release()
1674 _of_clear_opp(opp_table, opp); in _opp_kref_release()
1675 opp_debug_remove_one(opp); in _opp_kref_release()
1676 kfree(opp); in _opp_kref_release()
1679 void dev_pm_opp_get(struct dev_pm_opp *opp) in dev_pm_opp_get() argument
1681 kref_get(&opp->kref); in dev_pm_opp_get()
1684 void dev_pm_opp_put(struct dev_pm_opp *opp) in dev_pm_opp_put() argument
1686 kref_put_mutex(&opp->kref, _opp_kref_release, &opp->opp_table->lock); in dev_pm_opp_put()
1691 * dev_pm_opp_remove() - Remove an OPP from OPP table
1693 * @freq: OPP to remove with matching 'freq'
1695 * This function removes an opp from the opp table.
1699 struct dev_pm_opp *opp = NULL, *iter; in dev_pm_opp_remove() local
1709 mutex_lock(&opp_table->lock); in dev_pm_opp_remove()
1711 list_for_each_entry(iter, &opp_table->opp_list, node) { in dev_pm_opp_remove()
1712 if (iter->rates[0] == freq) { in dev_pm_opp_remove()
1713 opp = iter; in dev_pm_opp_remove()
1718 mutex_unlock(&opp_table->lock); in dev_pm_opp_remove()
1720 if (opp) { in dev_pm_opp_remove()
1721 dev_pm_opp_put(opp); in dev_pm_opp_remove()
1726 dev_warn(dev, "%s: Couldn't find OPP with freq: %lu\n", in dev_pm_opp_remove()
1739 struct dev_pm_opp *opp = NULL, *temp; in _opp_get_next() local
1741 mutex_lock(&opp_table->lock); in _opp_get_next()
1742 list_for_each_entry(temp, &opp_table->opp_list, node) { in _opp_get_next()
1744 * Refcount must be dropped only once for each OPP by OPP core, in _opp_get_next()
1747 if (!temp->removed && dynamic == temp->dynamic) { in _opp_get_next()
1748 opp = temp; in _opp_get_next()
1753 mutex_unlock(&opp_table->lock); in _opp_get_next()
1754 return opp; in _opp_get_next()
1760 * called without the opp_table->lock held.
1764 struct dev_pm_opp *opp; in _opp_remove_all() local
1766 while ((opp = _opp_get_next(opp_table, dynamic))) { in _opp_remove_all()
1767 opp->removed = true; in _opp_remove_all()
1768 dev_pm_opp_put(opp); in _opp_remove_all()
1778 mutex_lock(&opp_table->lock); in _opp_remove_all_static()
1780 if (!opp_table->parsed_static_opps) { in _opp_remove_all_static()
1781 mutex_unlock(&opp_table->lock); in _opp_remove_all_static()
1785 if (--opp_table->parsed_static_opps) { in _opp_remove_all_static()
1786 mutex_unlock(&opp_table->lock); in _opp_remove_all_static()
1790 mutex_unlock(&opp_table->lock); in _opp_remove_all_static()
1797 * dev_pm_opp_remove_all_dynamic() - Remove all dynamically created OPPs
1800 * This function removes all dynamically created OPPs from the opp table.
1819 struct dev_pm_opp *opp; in _opp_allocate() local
1823 supply_count = opp_table->regulator_count > 0 ? in _opp_allocate()
1824 opp_table->regulator_count : 1; in _opp_allocate()
1825 supply_size = sizeof(*opp->supplies) * supply_count; in _opp_allocate()
1826 clk_size = sizeof(*opp->rates) * opp_table->clk_count; in _opp_allocate()
1827 icc_size = sizeof(*opp->bandwidth) * opp_table->path_count; in _opp_allocate()
1829 /* allocate new OPP node and supplies structures */ in _opp_allocate()
1830 opp = kzalloc(sizeof(*opp) + supply_size + clk_size + icc_size, GFP_KERNEL); in _opp_allocate()
1831 if (!opp) in _opp_allocate()
1834 /* Put the supplies, bw and clock at the end of the OPP structure */ in _opp_allocate()
1835 opp->supplies = (struct dev_pm_opp_supply *)(opp + 1); in _opp_allocate()
1837 opp->rates = (unsigned long *)(opp->supplies + supply_count); in _opp_allocate()
1840 opp->bandwidth = (struct dev_pm_opp_icc_bw *)(opp->rates + opp_table->clk_count); in _opp_allocate()
1842 INIT_LIST_HEAD(&opp->node); in _opp_allocate()
1844 opp->level = OPP_LEVEL_UNSET; in _opp_allocate()
1846 return opp; in _opp_allocate()
1849 static bool _opp_supported_by_regulators(struct dev_pm_opp *opp, in _opp_supported_by_regulators() argument
1855 if (!opp_table->regulators) in _opp_supported_by_regulators()
1858 for (i = 0; i < opp_table->regulator_count; i++) { in _opp_supported_by_regulators()
1859 reg = opp_table->regulators[i]; in _opp_supported_by_regulators()
1862 opp->supplies[i].u_volt_min, in _opp_supported_by_regulators()
1863 opp->supplies[i].u_volt_max)) { in _opp_supported_by_regulators()
1864 pr_warn("%s: OPP minuV: %lu maxuV: %lu, not supported by regulator\n", in _opp_supported_by_regulators()
1865 __func__, opp->supplies[i].u_volt_min, in _opp_supported_by_regulators()
1866 opp->supplies[i].u_volt_max); in _opp_supported_by_regulators()
1879 for (i = 0; i < opp_table->clk_count; i++) { in _opp_compare_rate()
1880 if (opp1->rates[i] != opp2->rates[i]) in _opp_compare_rate()
1881 return opp1->rates[i] < opp2->rates[i] ? -1 : 1; in _opp_compare_rate()
1893 for (i = 0; i < opp_table->path_count; i++) { in _opp_compare_bw()
1894 if (opp1->bandwidth[i].peak != opp2->bandwidth[i].peak) in _opp_compare_bw()
1895 return opp1->bandwidth[i].peak < opp2->bandwidth[i].peak ? -1 : 1; in _opp_compare_bw()
1906 * -1: opp1 < opp2
1921 if (opp1->level != opp2->level) in _opp_compare_key()
1922 return opp1->level < opp2->level ? -1 : 1; in _opp_compare_key()
1932 struct dev_pm_opp *opp; in _opp_is_duplicate() local
1936 * Insert new OPP in order of increasing frequency and discard if in _opp_is_duplicate()
1939 * Need to use &opp_table->opp_list in the condition part of the 'for' in _opp_is_duplicate()
1943 list_for_each_entry(opp, &opp_table->opp_list, node) { in _opp_is_duplicate()
1944 opp_cmp = _opp_compare_key(opp_table, new_opp, opp); in _opp_is_duplicate()
1946 *head = &opp->node; in _opp_is_duplicate()
1955 __func__, opp->rates[0], opp->supplies[0].u_volt, in _opp_is_duplicate()
1956 opp->available, new_opp->rates[0], in _opp_is_duplicate()
1957 new_opp->supplies[0].u_volt, new_opp->available); in _opp_is_duplicate()
1960 return opp->available && in _opp_is_duplicate()
1961 new_opp->supplies[0].u_volt == opp->supplies[0].u_volt ? -EBUSY : -EEXIST; in _opp_is_duplicate()
1967 void _required_opps_available(struct dev_pm_opp *opp, int count) in _required_opps_available() argument
1972 if (opp->required_opps[i]->available) in _required_opps_available()
1975 opp->available = false; in _required_opps_available()
1976 pr_warn("%s: OPP not supported by required OPP %pOF (%lu)\n", in _required_opps_available()
1977 __func__, opp->required_opps[i]->np, opp->rates[0]); in _required_opps_available()
1985 * -EBUSY: For OPP with same freq/volt and is available. The callers of
1986 * _opp_add() must return 0 if they receive -EBUSY from it. This is to make
1988 * kernel try to initialize the OPP table.
1989 * -EEXIST: For OPP with same freq but different volt or is unavailable. This
1998 mutex_lock(&opp_table->lock); in _opp_add()
1999 head = &opp_table->opp_list; in _opp_add()
2003 mutex_unlock(&opp_table->lock); in _opp_add()
2007 list_add(&new_opp->node, head); in _opp_add()
2008 mutex_unlock(&opp_table->lock); in _opp_add()
2010 new_opp->opp_table = opp_table; in _opp_add()
2011 kref_init(&new_opp->kref); in _opp_add()
2016 new_opp->available = false; in _opp_add()
2017 dev_warn(dev, "%s: OPP not supported by regulators (%lu)\n", in _opp_add()
2018 __func__, new_opp->rates[0]); in _opp_add()
2021 /* required-opps not fully initialized yet */ in _opp_add()
2025 _required_opps_available(new_opp, opp_table->required_opp_count); in _opp_add()
2031 * _opp_add_v1() - Allocate a OPP based on v1 bindings.
2032 * @opp_table: OPP table
2034 * @data: The OPP data for the OPP to add
2037 * This function adds an opp definition to the opp table and returns status.
2038 * The opp is made available by default and it can be controlled using
2046 * Duplicate OPPs (both freq and volt are same) and opp->available
2047 * -EEXIST Freq are same and volt are different OR
2048 * Duplicate OPPs (both freq and volt are same) and !opp->available
2049 * -ENOMEM Memory allocation failure
2055 unsigned long tol, u_volt = data->u_volt; in _opp_add_v1()
2059 return -EINVAL; in _opp_add_v1()
2063 return -ENOMEM; in _opp_add_v1()
2065 /* populate the opp table */ in _opp_add_v1()
2066 new_opp->rates[0] = data->freq; in _opp_add_v1()
2067 new_opp->level = data->level; in _opp_add_v1()
2068 tol = u_volt * opp_table->voltage_tolerance_v1 / 100; in _opp_add_v1()
2069 new_opp->supplies[0].u_volt = u_volt; in _opp_add_v1()
2070 new_opp->supplies[0].u_volt_min = u_volt - tol; in _opp_add_v1()
2071 new_opp->supplies[0].u_volt_max = u_volt + tol; in _opp_add_v1()
2072 new_opp->available = true; in _opp_add_v1()
2073 new_opp->dynamic = dynamic; in _opp_add_v1()
2078 if (ret == -EBUSY) in _opp_add_v1()
2087 blocking_notifier_call_chain(&opp_table->head, OPP_EVENT_ADD, new_opp); in _opp_add_v1()
2098 * specify the hierarchy of versions it supports. OPP layer will then enable
2099 * OPPs, which are available for those versions, based on its 'opp-supported-hw'
2105 /* Another CPU that shares the OPP table has set the property ? */ in _opp_set_supported_hw()
2106 if (opp_table->supported_hw) in _opp_set_supported_hw()
2109 opp_table->supported_hw = kmemdup(versions, count * sizeof(*versions), in _opp_set_supported_hw()
2111 if (!opp_table->supported_hw) in _opp_set_supported_hw()
2112 return -ENOMEM; in _opp_set_supported_hw()
2114 opp_table->supported_hw_count = count; in _opp_set_supported_hw()
2121 if (opp_table->supported_hw) { in _opp_put_supported_hw()
2122 kfree(opp_table->supported_hw); in _opp_put_supported_hw()
2123 opp_table->supported_hw = NULL; in _opp_put_supported_hw()
2124 opp_table->supported_hw_count = 0; in _opp_put_supported_hw()
2131 * which the extension will apply are opp-microvolt and opp-microamp. OPP core
2132 * should postfix the property name with -<name> while looking for them.
2136 /* Another CPU that shares the OPP table has set the property ? */ in _opp_set_prop_name()
2137 if (!opp_table->prop_name) { in _opp_set_prop_name()
2138 opp_table->prop_name = kstrdup(name, GFP_KERNEL); in _opp_set_prop_name()
2139 if (!opp_table->prop_name) in _opp_set_prop_name()
2140 return -ENOMEM; in _opp_set_prop_name()
2148 if (opp_table->prop_name) { in _opp_put_prop_name()
2149 kfree(opp_table->prop_name); in _opp_put_prop_name()
2150 opp_table->prop_name = NULL; in _opp_put_prop_name()
2155 * In order to support OPP switching, OPP layer needs to know the name of the
2173 return -EINVAL; in _opp_set_regulators()
2175 /* Another CPU that shares the OPP table has set the regulators ? */ in _opp_set_regulators()
2176 if (opp_table->regulators) in _opp_set_regulators()
2179 opp_table->regulators = kmalloc_array(count, in _opp_set_regulators()
2180 sizeof(*opp_table->regulators), in _opp_set_regulators()
2182 if (!opp_table->regulators) in _opp_set_regulators()
2183 return -ENOMEM; in _opp_set_regulators()
2194 opp_table->regulators[i] = reg; in _opp_set_regulators()
2197 opp_table->regulator_count = count; in _opp_set_regulators()
2201 opp_table->config_regulators = _opp_config_regulator_single; in _opp_set_regulators()
2207 regulator_put(opp_table->regulators[--i]); in _opp_set_regulators()
2209 kfree(opp_table->regulators); in _opp_set_regulators()
2210 opp_table->regulators = NULL; in _opp_set_regulators()
2211 opp_table->regulator_count = -1; in _opp_set_regulators()
2220 if (!opp_table->regulators) in _opp_put_regulators()
2223 if (opp_table->enabled) { in _opp_put_regulators()
2224 for (i = opp_table->regulator_count - 1; i >= 0; i--) in _opp_put_regulators()
2225 regulator_disable(opp_table->regulators[i]); in _opp_put_regulators()
2228 for (i = opp_table->regulator_count - 1; i >= 0; i--) in _opp_put_regulators()
2229 regulator_put(opp_table->regulators[i]); in _opp_put_regulators()
2231 kfree(opp_table->regulators); in _opp_put_regulators()
2232 opp_table->regulators = NULL; in _opp_put_regulators()
2233 opp_table->regulator_count = -1; in _opp_put_regulators()
2240 for (i = count - 1; i >= 0; i--) in _put_clks()
2241 clk_put(opp_table->clks[i]); in _put_clks()
2243 kfree(opp_table->clks); in _put_clks()
2244 opp_table->clks = NULL; in _put_clks()
2248 * In order to support OPP switching, OPP layer needs to get pointers to the
2250 * (i.e. by passing connection-id as NULL), but for a device with multiple
2251 * clocks available, the OPP core needs to know the exact names of the clks to
2277 return -EINVAL; in _opp_set_clknames()
2279 /* Another CPU that shares the OPP table has set the clkname ? */ in _opp_set_clknames()
2280 if (opp_table->clks) in _opp_set_clknames()
2283 opp_table->clks = kmalloc_array(count, sizeof(*opp_table->clks), in _opp_set_clknames()
2285 if (!opp_table->clks) in _opp_set_clknames()
2286 return -ENOMEM; in _opp_set_clknames()
2298 opp_table->clks[i] = clk; in _opp_set_clknames()
2301 opp_table->clk_count = count; in _opp_set_clknames()
2302 opp_table->config_clks = config_clks; in _opp_set_clknames()
2306 if (!opp_table->config_clks) in _opp_set_clknames()
2307 opp_table->config_clks = _opp_config_clk_single; in _opp_set_clknames()
2314 * - avoiding clks[0] everywhere else. in _opp_set_clknames()
2315 * - not running single clk helpers for multiple clk usecase by in _opp_set_clknames()
2318 * Since this is single-clk case, just update the clk pointer in _opp_set_clknames()
2321 opp_table->clk = opp_table->clks[0]; in _opp_set_clknames()
2333 if (!opp_table->clks) in _opp_put_clknames()
2336 opp_table->config_clks = NULL; in _opp_put_clknames()
2337 opp_table->clk = ERR_PTR(-ENODEV); in _opp_put_clknames()
2339 _put_clks(opp_table, opp_table->clk_count); in _opp_put_clknames()
2350 /* Another CPU that shares the OPP table has set the helper ? */ in _opp_set_config_regulators_helper()
2351 if (!opp_table->config_regulators) in _opp_set_config_regulators_helper()
2352 opp_table->config_regulators = config_regulators; in _opp_set_config_regulators_helper()
2359 if (opp_table->config_regulators) in _opp_put_config_regulators_helper()
2360 opp_table->config_regulators = NULL; in _opp_put_config_regulators_helper()
2367 for (index = 0; index < opp_table->required_opp_count; index++) { in _opp_detach_genpd()
2368 if (!opp_table->required_devs[index]) in _opp_detach_genpd()
2371 dev_pm_domain_detach(opp_table->required_devs[index], false); in _opp_detach_genpd()
2372 opp_table->required_devs[index] = NULL; in _opp_detach_genpd()
2378 * virtual genpd devices, which are created for each consumer device - genpd
2380 * and are required by the OPP core to set the performance state of the genpd.
2388 * Otherwise the original device structure will be used instead by the OPP core.
2391 * "required-opps" are added in DT.
2397 int index = 0, ret = -EINVAL; in _opp_attach_genpd()
2400 if (!opp_table->required_devs) { in _opp_attach_genpd()
2402 return -EINVAL; in _opp_attach_genpd()
2406 if (opp_table->is_genpd) { in _opp_attach_genpd()
2408 return -EOPNOTSUPP; in _opp_attach_genpd()
2412 if (opp_table->required_devs[0]) in _opp_attach_genpd()
2416 if (index >= opp_table->required_opp_count) { in _opp_attach_genpd()
2417 dev_err(dev, "Index can't be greater than required-opp-count - 1, %s (%d : %d)\n", in _opp_attach_genpd()
2418 *name, opp_table->required_opp_count, index); in _opp_attach_genpd()
2424 ret = virt_dev ? PTR_ERR(virt_dev) : -ENODEV; in _opp_attach_genpd()
2430 * Add the virtual genpd device as a user of the OPP table, so in _opp_attach_genpd()
2433 * This will be automatically removed when the OPP table is in _opp_attach_genpd()
2436 if (!_add_opp_dev(virt_dev, opp_table->required_opp_tables[index])) { in _opp_attach_genpd()
2437 ret = -ENOMEM; in _opp_attach_genpd()
2441 opp_table->required_devs[index] = virt_dev; in _opp_attach_genpd()
2447 *virt_devs = opp_table->required_devs; in _opp_attach_genpd()
2463 if (!opp_table->required_devs) { in _opp_set_required_devs()
2465 return -EINVAL; in _opp_set_required_devs()
2468 /* Another device that shares the OPP table has set the required devs ? */ in _opp_set_required_devs()
2469 if (opp_table->required_devs[0]) in _opp_set_required_devs()
2472 for (i = 0; i < opp_table->required_opp_count; i++) { in _opp_set_required_devs()
2474 if (required_devs[i] && opp_table->is_genpd && in _opp_set_required_devs()
2475 opp_table->required_opp_tables[i]->is_genpd) { in _opp_set_required_devs()
2477 return -EOPNOTSUPP; in _opp_set_required_devs()
2480 opp_table->required_devs[i] = required_devs[i]; in _opp_set_required_devs()
2490 for (i = 0; i < opp_table->required_opp_count; i++) in _opp_put_required_devs()
2491 opp_table->required_devs[i] = NULL; in _opp_put_required_devs()
2496 if (data->flags & OPP_CONFIG_REQUIRED_DEVS) in _opp_clear_config()
2497 _opp_put_required_devs(data->opp_table); in _opp_clear_config()
2498 else if (data->flags & OPP_CONFIG_GENPD) in _opp_clear_config()
2499 _opp_detach_genpd(data->opp_table); in _opp_clear_config()
2501 if (data->flags & OPP_CONFIG_REGULATOR) in _opp_clear_config()
2502 _opp_put_regulators(data->opp_table); in _opp_clear_config()
2503 if (data->flags & OPP_CONFIG_SUPPORTED_HW) in _opp_clear_config()
2504 _opp_put_supported_hw(data->opp_table); in _opp_clear_config()
2505 if (data->flags & OPP_CONFIG_REGULATOR_HELPER) in _opp_clear_config()
2506 _opp_put_config_regulators_helper(data->opp_table); in _opp_clear_config()
2507 if (data->flags & OPP_CONFIG_PROP_NAME) in _opp_clear_config()
2508 _opp_put_prop_name(data->opp_table); in _opp_clear_config()
2509 if (data->flags & OPP_CONFIG_CLK) in _opp_clear_config()
2510 _opp_put_clknames(data->opp_table); in _opp_clear_config()
2512 dev_pm_opp_put_opp_table(data->opp_table); in _opp_clear_config()
2517 * dev_pm_opp_set_config() - Set OPP configuration for the device.
2519 * @config: OPP configuration.
2521 * This allows all device OPP configurations to be performed at once.
2524 * be called multiple times for the same OPP table, for example once for each
2526 * calls to dev_pm_opp_clear_config() in order to free the OPP table properly.
2542 return -ENOMEM; in dev_pm_opp_set_config()
2550 data->opp_table = opp_table; in dev_pm_opp_set_config()
2551 data->flags = 0; in dev_pm_opp_set_config()
2554 if (WARN_ON(!list_empty(&opp_table->opp_list))) { in dev_pm_opp_set_config()
2555 ret = -EBUSY; in dev_pm_opp_set_config()
2560 if (config->clk_names) { in dev_pm_opp_set_config()
2561 ret = _opp_set_clknames(opp_table, dev, config->clk_names, in dev_pm_opp_set_config()
2562 config->config_clks); in dev_pm_opp_set_config()
2566 data->flags |= OPP_CONFIG_CLK; in dev_pm_opp_set_config()
2567 } else if (config->config_clks) { in dev_pm_opp_set_config()
2569 ret = -EINVAL; in dev_pm_opp_set_config()
2574 if (config->prop_name) { in dev_pm_opp_set_config()
2575 ret = _opp_set_prop_name(opp_table, config->prop_name); in dev_pm_opp_set_config()
2579 data->flags |= OPP_CONFIG_PROP_NAME; in dev_pm_opp_set_config()
2583 if (config->config_regulators) { in dev_pm_opp_set_config()
2585 config->config_regulators); in dev_pm_opp_set_config()
2589 data->flags |= OPP_CONFIG_REGULATOR_HELPER; in dev_pm_opp_set_config()
2593 if (config->supported_hw) { in dev_pm_opp_set_config()
2594 ret = _opp_set_supported_hw(opp_table, config->supported_hw, in dev_pm_opp_set_config()
2595 config->supported_hw_count); in dev_pm_opp_set_config()
2599 data->flags |= OPP_CONFIG_SUPPORTED_HW; in dev_pm_opp_set_config()
2603 if (config->regulator_names) { in dev_pm_opp_set_config()
2605 config->regulator_names); in dev_pm_opp_set_config()
2609 data->flags |= OPP_CONFIG_REGULATOR; in dev_pm_opp_set_config()
2613 if (config->genpd_names) { in dev_pm_opp_set_config()
2614 if (config->required_devs) in dev_pm_opp_set_config()
2617 ret = _opp_attach_genpd(opp_table, dev, config->genpd_names, in dev_pm_opp_set_config()
2618 config->virt_devs); in dev_pm_opp_set_config()
2622 data->flags |= OPP_CONFIG_GENPD; in dev_pm_opp_set_config()
2623 } else if (config->required_devs) { in dev_pm_opp_set_config()
2625 config->required_devs); in dev_pm_opp_set_config()
2629 data->flags |= OPP_CONFIG_REQUIRED_DEVS; in dev_pm_opp_set_config()
2646 * dev_pm_opp_clear_config() - Releases resources blocked for OPP configuration.
2649 * This allows all device OPP configurations to be cleared at once. This must be
2653 * Currently the first call itself ends up freeing all the OPP configurations,
2654 * while the later ones only drop the OPP table reference. This works well for
2655 * now as we would never want to use an half initialized OPP table and want to
2683 * devm_pm_opp_set_config() - Set OPP configuration for the device.
2685 * @config: OPP configuration.
2687 * This allows all device OPP configurations to be performed at once.
2688 * This is a resource-managed variant of dev_pm_opp_set_config().
2705 * dev_pm_opp_xlate_required_opp() - Find required OPP for @src_table OPP.
2706 * @src_table: OPP table which has @dst_table as one of its required OPP table.
2707 * @dst_table: Required OPP table of the @src_table.
2708 * @src_opp: OPP from the @src_table.
2710 * This function returns the OPP (present in @dst_table) pointed out by the
2711 * "required-opps" property of the @src_opp (present in @src_table).
2713 * The callers are required to call dev_pm_opp_put() for the returned OPP after
2722 struct dev_pm_opp *opp, *dest_opp = ERR_PTR(-ENODEV); in dev_pm_opp_xlate_required_opp() local
2726 !src_table->required_opp_tables) in dev_pm_opp_xlate_required_opp()
2727 return ERR_PTR(-EINVAL); in dev_pm_opp_xlate_required_opp()
2729 /* required-opps not fully initialized yet */ in dev_pm_opp_xlate_required_opp()
2731 return ERR_PTR(-EBUSY); in dev_pm_opp_xlate_required_opp()
2733 for (i = 0; i < src_table->required_opp_count; i++) { in dev_pm_opp_xlate_required_opp()
2734 if (src_table->required_opp_tables[i] == dst_table) { in dev_pm_opp_xlate_required_opp()
2735 mutex_lock(&src_table->lock); in dev_pm_opp_xlate_required_opp()
2737 list_for_each_entry(opp, &src_table->opp_list, node) { in dev_pm_opp_xlate_required_opp()
2738 if (opp == src_opp) { in dev_pm_opp_xlate_required_opp()
2739 dest_opp = opp->required_opps[i]; in dev_pm_opp_xlate_required_opp()
2745 mutex_unlock(&src_table->lock); in dev_pm_opp_xlate_required_opp()
2751 pr_err("%s: Couldn't find matching OPP (%p: %p)\n", __func__, in dev_pm_opp_xlate_required_opp()
2760 * dev_pm_opp_xlate_performance_state() - Find required OPP's pstate for src_table.
2761 * @src_table: OPP table which has dst_table as one of its required OPP table.
2762 * @dst_table: Required OPP table of the src_table.
2765 * This Returns pstate of the OPP (present in @dst_table) pointed out by the
2766 * "required-opps" property of the OPP (present in @src_table) which has
2776 struct dev_pm_opp *opp; in dev_pm_opp_xlate_performance_state() local
2777 int dest_pstate = -EINVAL; in dev_pm_opp_xlate_performance_state()
2784 * and so none of them have the "required-opps" property set. Return the in dev_pm_opp_xlate_performance_state()
2787 if (!src_table || !src_table->required_opp_count) in dev_pm_opp_xlate_performance_state()
2790 /* Both OPP tables must belong to genpds */ in dev_pm_opp_xlate_performance_state()
2791 if (unlikely(!src_table->is_genpd || !dst_table->is_genpd)) { in dev_pm_opp_xlate_performance_state()
2793 return -EINVAL; in dev_pm_opp_xlate_performance_state()
2796 /* required-opps not fully initialized yet */ in dev_pm_opp_xlate_performance_state()
2798 return -EBUSY; in dev_pm_opp_xlate_performance_state()
2800 for (i = 0; i < src_table->required_opp_count; i++) { in dev_pm_opp_xlate_performance_state()
2801 if (src_table->required_opp_tables[i]->np == dst_table->np) in dev_pm_opp_xlate_performance_state()
2805 if (unlikely(i == src_table->required_opp_count)) { in dev_pm_opp_xlate_performance_state()
2806 pr_err("%s: Couldn't find matching OPP table (%p: %p)\n", in dev_pm_opp_xlate_performance_state()
2808 return -EINVAL; in dev_pm_opp_xlate_performance_state()
2811 mutex_lock(&src_table->lock); in dev_pm_opp_xlate_performance_state()
2813 list_for_each_entry(opp, &src_table->opp_list, node) { in dev_pm_opp_xlate_performance_state()
2814 if (opp->level == pstate) { in dev_pm_opp_xlate_performance_state()
2815 dest_pstate = opp->required_opps[i]->level; in dev_pm_opp_xlate_performance_state()
2820 pr_err("%s: Couldn't find matching OPP (%p: %p)\n", __func__, src_table, in dev_pm_opp_xlate_performance_state()
2824 mutex_unlock(&src_table->lock); in dev_pm_opp_xlate_performance_state()
2830 * dev_pm_opp_add_dynamic() - Add an OPP table from a table definitions
2832 * @data: The OPP data for the OPP to add
2834 * This function adds an opp definition to the opp table and returns status.
2835 * The opp is made available by default and it can be controlled using
2840 * Duplicate OPPs (both freq and volt are same) and opp->available
2841 * -EEXIST Freq are same and volt are different OR
2842 * Duplicate OPPs (both freq and volt are same) and !opp->available
2843 * -ENOMEM Memory allocation failure
2855 opp_table->regulator_count = 1; in dev_pm_opp_add_dynamic()
2866 * _opp_set_availability() - helper to set the availability of an opp
2868 * @freq: OPP frequency to modify availability
2869 * @availability_req: availability status requested for this opp
2871 * Set the availability of an OPP, opp_{enable,disable} share a common logic
2874 * Return: -EINVAL for bad pointers, -ENOMEM if no memory available for the
2882 struct dev_pm_opp *tmp_opp, *opp = ERR_PTR(-ENODEV); in _opp_set_availability() local
2889 dev_warn(dev, "%s: Device OPP not found (%d)\n", __func__, r); in _opp_set_availability()
2894 r = -EINVAL; in _opp_set_availability()
2898 mutex_lock(&opp_table->lock); in _opp_set_availability()
2901 list_for_each_entry(tmp_opp, &opp_table->opp_list, node) { in _opp_set_availability()
2902 if (tmp_opp->rates[0] == freq) { in _opp_set_availability()
2903 opp = tmp_opp; in _opp_set_availability()
2908 if (IS_ERR(opp)) { in _opp_set_availability()
2909 r = PTR_ERR(opp); in _opp_set_availability()
2914 if (opp->available == availability_req) in _opp_set_availability()
2917 opp->available = availability_req; in _opp_set_availability()
2919 dev_pm_opp_get(opp); in _opp_set_availability()
2920 mutex_unlock(&opp_table->lock); in _opp_set_availability()
2922 /* Notify the change of the OPP availability */ in _opp_set_availability()
2924 blocking_notifier_call_chain(&opp_table->head, OPP_EVENT_ENABLE, in _opp_set_availability()
2925 opp); in _opp_set_availability()
2927 blocking_notifier_call_chain(&opp_table->head, in _opp_set_availability()
2928 OPP_EVENT_DISABLE, opp); in _opp_set_availability()
2930 dev_pm_opp_put(opp); in _opp_set_availability()
2934 mutex_unlock(&opp_table->lock); in _opp_set_availability()
2941 * dev_pm_opp_adjust_voltage() - helper to change the voltage of an OPP
2943 * @freq: OPP frequency to adjust voltage of
2944 * @u_volt: new OPP target voltage
2945 * @u_volt_min: new OPP min voltage
2946 * @u_volt_max: new OPP max voltage
2948 * Return: -EINVAL for bad pointers, -ENOMEM if no memory available for the
2958 struct dev_pm_opp *tmp_opp, *opp = ERR_PTR(-ENODEV); in dev_pm_opp_adjust_voltage() local
2965 dev_warn(dev, "%s: Device OPP not found (%d)\n", __func__, r); in dev_pm_opp_adjust_voltage()
2970 r = -EINVAL; in dev_pm_opp_adjust_voltage()
2974 mutex_lock(&opp_table->lock); in dev_pm_opp_adjust_voltage()
2977 list_for_each_entry(tmp_opp, &opp_table->opp_list, node) { in dev_pm_opp_adjust_voltage()
2978 if (tmp_opp->rates[0] == freq) { in dev_pm_opp_adjust_voltage()
2979 opp = tmp_opp; in dev_pm_opp_adjust_voltage()
2984 if (IS_ERR(opp)) { in dev_pm_opp_adjust_voltage()
2985 r = PTR_ERR(opp); in dev_pm_opp_adjust_voltage()
2990 if (opp->supplies->u_volt == u_volt) in dev_pm_opp_adjust_voltage()
2993 opp->supplies->u_volt = u_volt; in dev_pm_opp_adjust_voltage()
2994 opp->supplies->u_volt_min = u_volt_min; in dev_pm_opp_adjust_voltage()
2995 opp->supplies->u_volt_max = u_volt_max; in dev_pm_opp_adjust_voltage()
2997 dev_pm_opp_get(opp); in dev_pm_opp_adjust_voltage()
2998 mutex_unlock(&opp_table->lock); in dev_pm_opp_adjust_voltage()
3000 /* Notify the voltage change of the OPP */ in dev_pm_opp_adjust_voltage()
3001 blocking_notifier_call_chain(&opp_table->head, OPP_EVENT_ADJUST_VOLTAGE, in dev_pm_opp_adjust_voltage()
3002 opp); in dev_pm_opp_adjust_voltage()
3004 dev_pm_opp_put(opp); in dev_pm_opp_adjust_voltage()
3008 mutex_unlock(&opp_table->lock); in dev_pm_opp_adjust_voltage()
3016 * dev_pm_opp_sync_regulators() - Sync state of voltage regulators
3019 * Sync voltage state of the OPP table regulators.
3029 /* Device may not have OPP table */ in dev_pm_opp_sync_regulators()
3035 if (unlikely(!opp_table->regulators)) in dev_pm_opp_sync_regulators()
3039 if (!opp_table->enabled) in dev_pm_opp_sync_regulators()
3042 for (i = 0; i < opp_table->regulator_count; i++) { in dev_pm_opp_sync_regulators()
3043 reg = opp_table->regulators[i]; in dev_pm_opp_sync_regulators()
3057 * dev_pm_opp_enable() - Enable a specific OPP
3059 * @freq: OPP frequency to enable
3061 * Enables a provided opp. If the operation is valid, this returns 0, else the
3062 * corresponding error value. It is meant to be used for users an OPP available
3065 * Return: -EINVAL for bad pointers, -ENOMEM if no memory available for the
3076 * dev_pm_opp_disable() - Disable a specific OPP
3078 * @freq: OPP frequency to disable
3080 * Disables a provided opp. If the operation is valid, this returns
3082 * control by users to make this OPP not available until the circumstances are
3085 * Return: -EINVAL for bad pointers, -ENOMEM if no memory available for the
3096 * dev_pm_opp_register_notifier() - Register OPP notifier for the device
3111 ret = blocking_notifier_chain_register(&opp_table->head, nb); in dev_pm_opp_register_notifier()
3120 * dev_pm_opp_unregister_notifier() - Unregister OPP notifier for the device
3136 ret = blocking_notifier_chain_unregister(&opp_table->head, nb); in dev_pm_opp_unregister_notifier()
3145 * dev_pm_opp_remove_table() - Free all OPPs associated with the device
3146 * @dev: device pointer used to lookup OPP table.
3160 if (error != -ENODEV) in dev_pm_opp_remove_table()
3169 * Drop the extra reference only if the OPP table was successfully added in dev_pm_opp_remove_table()