^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1) // SPDX-License-Identifier: GPL-2.0-only
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3) * Power capping class
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4) * Copyright (c) 2013, Intel Corporation.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7) #include <linux/module.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8) #include <linux/device.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9) #include <linux/err.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) #include <linux/slab.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) #include <linux/powercap.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) #define to_powercap_zone(n) container_of(n, struct powercap_zone, dev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) #define to_powercap_control_type(n) \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) container_of(n, struct powercap_control_type, dev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) /* Power zone show function */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) #define define_power_zone_show(_attr) \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) static ssize_t _attr##_show(struct device *dev, \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) struct device_attribute *dev_attr,\
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) char *buf) \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) { \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) u64 value; \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) ssize_t len = -EINVAL; \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) struct powercap_zone *power_zone = to_powercap_zone(dev); \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) if (power_zone->ops->get_##_attr) { \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) if (!power_zone->ops->get_##_attr(power_zone, &value)) \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) len = sprintf(buf, "%lld\n", value); \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) } \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) return len; \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) /* The only meaningful input is 0 (reset), others are silently ignored */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) #define define_power_zone_store(_attr) \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) static ssize_t _attr##_store(struct device *dev,\
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) struct device_attribute *dev_attr, \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) const char *buf, size_t count) \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) { \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) int err; \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) struct powercap_zone *power_zone = to_powercap_zone(dev); \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) u64 value; \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) err = kstrtoull(buf, 10, &value); \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) if (err) \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) return -EINVAL; \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) if (value) \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) return count; \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) if (power_zone->ops->reset_##_attr) { \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) if (!power_zone->ops->reset_##_attr(power_zone)) \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) return count; \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) } \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) return -EINVAL; \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) /* Power zone constraint show function */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) #define define_power_zone_constraint_show(_attr) \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) static ssize_t show_constraint_##_attr(struct device *dev, \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) struct device_attribute *dev_attr,\
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) char *buf) \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) { \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) u64 value; \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) ssize_t len = -ENODATA; \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) struct powercap_zone *power_zone = to_powercap_zone(dev); \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) int id; \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) struct powercap_zone_constraint *pconst;\
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) if (!sscanf(dev_attr->attr.name, "constraint_%d_", &id)) \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) return -EINVAL; \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) if (id >= power_zone->const_id_cnt) \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) return -EINVAL; \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74) pconst = &power_zone->constraints[id]; \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75) if (pconst && pconst->ops && pconst->ops->get_##_attr) { \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) if (!pconst->ops->get_##_attr(power_zone, id, &value)) \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77) len = sprintf(buf, "%lld\n", value); \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78) } \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79) \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80) return len; \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83) /* Power zone constraint store function */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84) #define define_power_zone_constraint_store(_attr) \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85) static ssize_t store_constraint_##_attr(struct device *dev,\
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86) struct device_attribute *dev_attr, \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87) const char *buf, size_t count) \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88) { \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89) int err; \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90) u64 value; \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91) struct powercap_zone *power_zone = to_powercap_zone(dev); \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92) int id; \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93) struct powercap_zone_constraint *pconst;\
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94) \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95) if (!sscanf(dev_attr->attr.name, "constraint_%d_", &id)) \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96) return -EINVAL; \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97) if (id >= power_zone->const_id_cnt) \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98) return -EINVAL; \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99) pconst = &power_zone->constraints[id]; \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) err = kstrtoull(buf, 10, &value); \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) if (err) \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) return -EINVAL; \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) if (pconst && pconst->ops && pconst->ops->set_##_attr) { \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) if (!pconst->ops->set_##_attr(power_zone, id, value)) \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) return count; \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) } \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) return -ENODATA; \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) /* Power zone information callbacks */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) define_power_zone_show(power_uw);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) define_power_zone_show(max_power_range_uw);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) define_power_zone_show(energy_uj);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) define_power_zone_store(energy_uj);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) define_power_zone_show(max_energy_range_uj);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) /* Power zone attributes */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) static DEVICE_ATTR_RO(max_power_range_uw);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) static DEVICE_ATTR_RO(power_uw);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) static DEVICE_ATTR_RO(max_energy_range_uj);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) static DEVICE_ATTR_RW(energy_uj);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) /* Power zone constraint attributes callbacks */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) define_power_zone_constraint_show(power_limit_uw);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) define_power_zone_constraint_store(power_limit_uw);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) define_power_zone_constraint_show(time_window_us);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) define_power_zone_constraint_store(time_window_us);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) define_power_zone_constraint_show(max_power_uw);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) define_power_zone_constraint_show(min_power_uw);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) define_power_zone_constraint_show(max_time_window_us);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) define_power_zone_constraint_show(min_time_window_us);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) /* For one time seeding of constraint device attributes */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) struct powercap_constraint_attr {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) struct device_attribute power_limit_attr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) struct device_attribute time_window_attr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) struct device_attribute max_power_attr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) struct device_attribute min_power_attr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) struct device_attribute max_time_window_attr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) struct device_attribute min_time_window_attr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) struct device_attribute name_attr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) static struct powercap_constraint_attr
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) constraint_attrs[MAX_CONSTRAINTS_PER_ZONE];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148) /* A list of powercap control_types */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) static LIST_HEAD(powercap_cntrl_list);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150) /* Mutex to protect list of powercap control_types */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) static DEFINE_MUTEX(powercap_cntrl_list_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153) #define POWERCAP_CONSTRAINT_NAME_LEN 30 /* Some limit to avoid overflow */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154) static ssize_t show_constraint_name(struct device *dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155) struct device_attribute *dev_attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156) char *buf)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158) const char *name;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159) struct powercap_zone *power_zone = to_powercap_zone(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160) int id;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161) ssize_t len = -ENODATA;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162) struct powercap_zone_constraint *pconst;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164) if (!sscanf(dev_attr->attr.name, "constraint_%d_", &id))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166) if (id >= power_zone->const_id_cnt)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168) pconst = &power_zone->constraints[id];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170) if (pconst && pconst->ops && pconst->ops->get_name) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171) name = pconst->ops->get_name(power_zone, id);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172) if (name) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173) snprintf(buf, POWERCAP_CONSTRAINT_NAME_LEN,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174) "%s\n", name);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175) buf[POWERCAP_CONSTRAINT_NAME_LEN] = '\0';
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176) len = strlen(buf);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180) return len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183) static int create_constraint_attribute(int id, const char *name,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184) int mode,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185) struct device_attribute *dev_attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186) ssize_t (*show)(struct device *,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187) struct device_attribute *, char *),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188) ssize_t (*store)(struct device *,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189) struct device_attribute *,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190) const char *, size_t)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 191) )
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 192) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 193)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 194) dev_attr->attr.name = kasprintf(GFP_KERNEL, "constraint_%d_%s",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 195) id, name);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 196) if (!dev_attr->attr.name)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 197) return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 198) dev_attr->attr.mode = mode;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 199) dev_attr->show = show;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 200) dev_attr->store = store;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 201)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 202) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 203) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 204)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 205) static void free_constraint_attributes(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 206) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 207) int i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 208)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 209) for (i = 0; i < MAX_CONSTRAINTS_PER_ZONE; ++i) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 210) kfree(constraint_attrs[i].power_limit_attr.attr.name);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 211) kfree(constraint_attrs[i].time_window_attr.attr.name);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 212) kfree(constraint_attrs[i].name_attr.attr.name);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 213) kfree(constraint_attrs[i].max_power_attr.attr.name);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 214) kfree(constraint_attrs[i].min_power_attr.attr.name);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 215) kfree(constraint_attrs[i].max_time_window_attr.attr.name);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 216) kfree(constraint_attrs[i].min_time_window_attr.attr.name);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 217) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 218) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 219)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 220) static int seed_constraint_attributes(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 221) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 222) int i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 223) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 224)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 225) for (i = 0; i < MAX_CONSTRAINTS_PER_ZONE; ++i) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 226) ret = create_constraint_attribute(i, "power_limit_uw",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 227) S_IWUSR | S_IRUGO,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 228) &constraint_attrs[i].power_limit_attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 229) show_constraint_power_limit_uw,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 230) store_constraint_power_limit_uw);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 231) if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 232) goto err_alloc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 233) ret = create_constraint_attribute(i, "time_window_us",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 234) S_IWUSR | S_IRUGO,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 235) &constraint_attrs[i].time_window_attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 236) show_constraint_time_window_us,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 237) store_constraint_time_window_us);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 238) if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 239) goto err_alloc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 240) ret = create_constraint_attribute(i, "name", S_IRUGO,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 241) &constraint_attrs[i].name_attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 242) show_constraint_name,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 243) NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 244) if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 245) goto err_alloc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 246) ret = create_constraint_attribute(i, "max_power_uw", S_IRUGO,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 247) &constraint_attrs[i].max_power_attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 248) show_constraint_max_power_uw,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 249) NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 250) if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 251) goto err_alloc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 252) ret = create_constraint_attribute(i, "min_power_uw", S_IRUGO,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 253) &constraint_attrs[i].min_power_attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 254) show_constraint_min_power_uw,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 255) NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 256) if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 257) goto err_alloc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 258) ret = create_constraint_attribute(i, "max_time_window_us",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 259) S_IRUGO,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 260) &constraint_attrs[i].max_time_window_attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 261) show_constraint_max_time_window_us,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 262) NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 263) if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 264) goto err_alloc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 265) ret = create_constraint_attribute(i, "min_time_window_us",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 266) S_IRUGO,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 267) &constraint_attrs[i].min_time_window_attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 268) show_constraint_min_time_window_us,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 269) NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 270) if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 271) goto err_alloc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 272)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 273) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 274)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 275) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 276)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 277) err_alloc:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 278) free_constraint_attributes();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 279)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 280) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 281) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 282)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 283) static int create_constraints(struct powercap_zone *power_zone,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 284) int nr_constraints,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 285) const struct powercap_zone_constraint_ops *const_ops)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 286) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 287) int i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 288) int ret = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 289) int count;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 290) struct powercap_zone_constraint *pconst;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 291)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 292) if (!power_zone || !const_ops || !const_ops->get_power_limit_uw ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 293) !const_ops->set_power_limit_uw ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 294) !const_ops->get_time_window_us ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 295) !const_ops->set_time_window_us)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 296) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 297)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 298) count = power_zone->zone_attr_count;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 299) for (i = 0; i < nr_constraints; ++i) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 300) pconst = &power_zone->constraints[i];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 301) pconst->ops = const_ops;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 302) pconst->id = power_zone->const_id_cnt;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 303) power_zone->const_id_cnt++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 304) power_zone->zone_dev_attrs[count++] =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 305) &constraint_attrs[i].power_limit_attr.attr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 306) power_zone->zone_dev_attrs[count++] =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 307) &constraint_attrs[i].time_window_attr.attr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 308) if (pconst->ops->get_name)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 309) power_zone->zone_dev_attrs[count++] =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 310) &constraint_attrs[i].name_attr.attr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 311) if (pconst->ops->get_max_power_uw)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 312) power_zone->zone_dev_attrs[count++] =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 313) &constraint_attrs[i].max_power_attr.attr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 314) if (pconst->ops->get_min_power_uw)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 315) power_zone->zone_dev_attrs[count++] =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 316) &constraint_attrs[i].min_power_attr.attr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 317) if (pconst->ops->get_max_time_window_us)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 318) power_zone->zone_dev_attrs[count++] =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 319) &constraint_attrs[i].max_time_window_attr.attr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 320) if (pconst->ops->get_min_time_window_us)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 321) power_zone->zone_dev_attrs[count++] =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 322) &constraint_attrs[i].min_time_window_attr.attr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 323) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 324) power_zone->zone_attr_count = count;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 325)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 326) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 327) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 328)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 329) static bool control_type_valid(void *control_type)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 330) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 331) struct powercap_control_type *pos = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 332) bool found = false;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 333)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 334) mutex_lock(&powercap_cntrl_list_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 335)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 336) list_for_each_entry(pos, &powercap_cntrl_list, node) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 337) if (pos == control_type) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 338) found = true;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 339) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 340) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 341) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 342) mutex_unlock(&powercap_cntrl_list_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 343)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 344) return found;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 345) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 346)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 347) static ssize_t name_show(struct device *dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 348) struct device_attribute *attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 349) char *buf)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 350) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 351) struct powercap_zone *power_zone = to_powercap_zone(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 352)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 353) return sprintf(buf, "%s\n", power_zone->name);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 354) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 355)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 356) static DEVICE_ATTR_RO(name);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 357)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 358) /* Create zone and attributes in sysfs */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 359) static void create_power_zone_common_attributes(
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 360) struct powercap_zone *power_zone)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 361) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 362) int count = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 363)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 364) power_zone->zone_dev_attrs[count++] = &dev_attr_name.attr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 365) if (power_zone->ops->get_max_energy_range_uj)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 366) power_zone->zone_dev_attrs[count++] =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 367) &dev_attr_max_energy_range_uj.attr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 368) if (power_zone->ops->get_energy_uj) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 369) if (power_zone->ops->reset_energy_uj)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 370) dev_attr_energy_uj.attr.mode = S_IWUSR | S_IRUSR;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 371) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 372) dev_attr_energy_uj.attr.mode = S_IRUSR;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 373) power_zone->zone_dev_attrs[count++] =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 374) &dev_attr_energy_uj.attr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 375) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 376) if (power_zone->ops->get_power_uw)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 377) power_zone->zone_dev_attrs[count++] =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 378) &dev_attr_power_uw.attr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 379) if (power_zone->ops->get_max_power_range_uw)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 380) power_zone->zone_dev_attrs[count++] =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 381) &dev_attr_max_power_range_uw.attr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 382) power_zone->zone_dev_attrs[count] = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 383) power_zone->zone_attr_count = count;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 384) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 385)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 386) static void powercap_release(struct device *dev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 387) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 388) bool allocated;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 389)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 390) if (dev->parent) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 391) struct powercap_zone *power_zone = to_powercap_zone(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 392)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 393) /* Store flag as the release() may free memory */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 394) allocated = power_zone->allocated;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 395) /* Remove id from parent idr struct */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 396) idr_remove(power_zone->parent_idr, power_zone->id);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 397) /* Destroy idrs allocated for this zone */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 398) idr_destroy(&power_zone->idr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 399) kfree(power_zone->name);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 400) kfree(power_zone->zone_dev_attrs);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 401) kfree(power_zone->constraints);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 402) if (power_zone->ops->release)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 403) power_zone->ops->release(power_zone);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 404) if (allocated)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 405) kfree(power_zone);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 406) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 407) struct powercap_control_type *control_type =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 408) to_powercap_control_type(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 409)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 410) /* Store flag as the release() may free memory */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 411) allocated = control_type->allocated;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 412) idr_destroy(&control_type->idr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 413) mutex_destroy(&control_type->lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 414) if (control_type->ops && control_type->ops->release)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 415) control_type->ops->release(control_type);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 416) if (allocated)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 417) kfree(control_type);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 418) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 419) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 420)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 421) static ssize_t enabled_show(struct device *dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 422) struct device_attribute *attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 423) char *buf)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 424) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 425) bool mode = true;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 426)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 427) /* Default is enabled */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 428) if (dev->parent) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 429) struct powercap_zone *power_zone = to_powercap_zone(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 430) if (power_zone->ops->get_enable)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 431) if (power_zone->ops->get_enable(power_zone, &mode))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 432) mode = false;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 433) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 434) struct powercap_control_type *control_type =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 435) to_powercap_control_type(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 436) if (control_type->ops && control_type->ops->get_enable)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 437) if (control_type->ops->get_enable(control_type, &mode))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 438) mode = false;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 439) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 440)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 441) return sprintf(buf, "%d\n", mode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 442) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 443)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 444) static ssize_t enabled_store(struct device *dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 445) struct device_attribute *attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 446) const char *buf, size_t len)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 447) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 448) bool mode;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 449)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 450) if (strtobool(buf, &mode))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 451) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 452) if (dev->parent) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 453) struct powercap_zone *power_zone = to_powercap_zone(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 454) if (power_zone->ops->set_enable)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 455) if (!power_zone->ops->set_enable(power_zone, mode))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 456) return len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 457) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 458) struct powercap_control_type *control_type =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 459) to_powercap_control_type(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 460) if (control_type->ops && control_type->ops->set_enable)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 461) if (!control_type->ops->set_enable(control_type, mode))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 462) return len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 463) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 464)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 465) return -ENOSYS;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 466) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 467)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 468) static DEVICE_ATTR_RW(enabled);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 469)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 470) static struct attribute *powercap_attrs[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 471) &dev_attr_enabled.attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 472) NULL,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 473) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 474) ATTRIBUTE_GROUPS(powercap);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 475)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 476) static struct class powercap_class = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 477) .name = "powercap",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 478) .dev_release = powercap_release,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 479) .dev_groups = powercap_groups,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 480) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 481)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 482) struct powercap_zone *powercap_register_zone(
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 483) struct powercap_zone *power_zone,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 484) struct powercap_control_type *control_type,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 485) const char *name,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 486) struct powercap_zone *parent,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 487) const struct powercap_zone_ops *ops,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 488) int nr_constraints,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 489) const struct powercap_zone_constraint_ops *const_ops)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 490) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 491) int result;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 492) int nr_attrs;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 493)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 494) if (!name || !control_type || !ops ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 495) nr_constraints > MAX_CONSTRAINTS_PER_ZONE ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 496) (!ops->get_energy_uj && !ops->get_power_uw) ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 497) !control_type_valid(control_type))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 498) return ERR_PTR(-EINVAL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 499)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 500) if (power_zone) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 501) if (!ops->release)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 502) return ERR_PTR(-EINVAL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 503) memset(power_zone, 0, sizeof(*power_zone));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 504) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 505) power_zone = kzalloc(sizeof(*power_zone), GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 506) if (!power_zone)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 507) return ERR_PTR(-ENOMEM);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 508) power_zone->allocated = true;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 509) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 510) power_zone->ops = ops;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 511) power_zone->control_type_inst = control_type;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 512) if (!parent) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 513) power_zone->dev.parent = &control_type->dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 514) power_zone->parent_idr = &control_type->idr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 515) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 516) power_zone->dev.parent = &parent->dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 517) power_zone->parent_idr = &parent->idr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 518) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 519) power_zone->dev.class = &powercap_class;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 520)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 521) mutex_lock(&control_type->lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 522) /* Using idr to get the unique id */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 523) result = idr_alloc(power_zone->parent_idr, NULL, 0, 0, GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 524) if (result < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 525) goto err_idr_alloc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 526)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 527) power_zone->id = result;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 528) idr_init(&power_zone->idr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 529) result = -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 530) power_zone->name = kstrdup(name, GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 531) if (!power_zone->name)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 532) goto err_name_alloc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 533) dev_set_name(&power_zone->dev, "%s:%x",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 534) dev_name(power_zone->dev.parent),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 535) power_zone->id);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 536) power_zone->constraints = kcalloc(nr_constraints,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 537) sizeof(*power_zone->constraints),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 538) GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 539) if (!power_zone->constraints)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 540) goto err_const_alloc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 541)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 542) nr_attrs = nr_constraints * POWERCAP_CONSTRAINTS_ATTRS +
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 543) POWERCAP_ZONE_MAX_ATTRS + 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 544) power_zone->zone_dev_attrs = kcalloc(nr_attrs, sizeof(void *),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 545) GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 546) if (!power_zone->zone_dev_attrs)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 547) goto err_attr_alloc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 548) create_power_zone_common_attributes(power_zone);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 549) result = create_constraints(power_zone, nr_constraints, const_ops);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 550) if (result)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 551) goto err_dev_ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 552)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 553) power_zone->zone_dev_attrs[power_zone->zone_attr_count] = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 554) power_zone->dev_zone_attr_group.attrs = power_zone->zone_dev_attrs;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 555) power_zone->dev_attr_groups[0] = &power_zone->dev_zone_attr_group;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 556) power_zone->dev_attr_groups[1] = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 557) power_zone->dev.groups = power_zone->dev_attr_groups;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 558) result = device_register(&power_zone->dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 559) if (result)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 560) goto err_dev_ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 561)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 562) control_type->nr_zones++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 563) mutex_unlock(&control_type->lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 564)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 565) return power_zone;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 566)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 567) err_dev_ret:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 568) kfree(power_zone->zone_dev_attrs);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 569) err_attr_alloc:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 570) kfree(power_zone->constraints);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 571) err_const_alloc:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 572) kfree(power_zone->name);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 573) err_name_alloc:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 574) idr_remove(power_zone->parent_idr, power_zone->id);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 575) err_idr_alloc:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 576) if (power_zone->allocated)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 577) kfree(power_zone);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 578) mutex_unlock(&control_type->lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 579)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 580) return ERR_PTR(result);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 581) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 582) EXPORT_SYMBOL_GPL(powercap_register_zone);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 583)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 584) int powercap_unregister_zone(struct powercap_control_type *control_type,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 585) struct powercap_zone *power_zone)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 586) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 587) if (!power_zone || !control_type)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 588) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 589)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 590) mutex_lock(&control_type->lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 591) control_type->nr_zones--;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 592) mutex_unlock(&control_type->lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 593)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 594) device_unregister(&power_zone->dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 595)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 596) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 597) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 598) EXPORT_SYMBOL_GPL(powercap_unregister_zone);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 599)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 600) struct powercap_control_type *powercap_register_control_type(
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 601) struct powercap_control_type *control_type,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 602) const char *name,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 603) const struct powercap_control_type_ops *ops)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 604) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 605) int result;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 606)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 607) if (!name)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 608) return ERR_PTR(-EINVAL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 609) if (control_type) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 610) if (!ops || !ops->release)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 611) return ERR_PTR(-EINVAL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 612) memset(control_type, 0, sizeof(*control_type));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 613) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 614) control_type = kzalloc(sizeof(*control_type), GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 615) if (!control_type)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 616) return ERR_PTR(-ENOMEM);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 617) control_type->allocated = true;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 618) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 619) mutex_init(&control_type->lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 620) control_type->ops = ops;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 621) INIT_LIST_HEAD(&control_type->node);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 622) control_type->dev.class = &powercap_class;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 623) dev_set_name(&control_type->dev, "%s", name);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 624) result = device_register(&control_type->dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 625) if (result) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 626) if (control_type->allocated)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 627) kfree(control_type);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 628) return ERR_PTR(result);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 629) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 630) idr_init(&control_type->idr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 631)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 632) mutex_lock(&powercap_cntrl_list_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 633) list_add_tail(&control_type->node, &powercap_cntrl_list);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 634) mutex_unlock(&powercap_cntrl_list_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 635)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 636) return control_type;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 637) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 638) EXPORT_SYMBOL_GPL(powercap_register_control_type);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 639)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 640) int powercap_unregister_control_type(struct powercap_control_type *control_type)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 641) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 642) struct powercap_control_type *pos = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 643)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 644) if (control_type->nr_zones) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 645) dev_err(&control_type->dev, "Zones of this type still not freed\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 646) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 647) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 648) mutex_lock(&powercap_cntrl_list_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 649) list_for_each_entry(pos, &powercap_cntrl_list, node) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 650) if (pos == control_type) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 651) list_del(&control_type->node);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 652) mutex_unlock(&powercap_cntrl_list_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 653) device_unregister(&control_type->dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 654) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 655) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 656) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 657) mutex_unlock(&powercap_cntrl_list_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 658)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 659) return -ENODEV;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 660) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 661) EXPORT_SYMBOL_GPL(powercap_unregister_control_type);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 662)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 663) static int __init powercap_init(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 664) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 665) int result;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 666)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 667) result = seed_constraint_attributes();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 668) if (result)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 669) return result;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 670)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 671) return class_register(&powercap_class);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 672) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 673)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 674) fs_initcall(powercap_init);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 675)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 676) MODULE_DESCRIPTION("PowerCap sysfs Driver");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 677) MODULE_AUTHOR("Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 678) MODULE_LICENSE("GPL v2");
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
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