Greg Kroah-Hartman | 33ea3a3 | 2014-09-07 15:39:34 -0700 | [diff] [blame] | 1 | /* |
Rui Miguel Silva | 2724be0 | 2015-11-12 15:36:00 +0000 | [diff] [blame] | 2 | * Power Supply driver for a Greybus module. |
Greg Kroah-Hartman | 33ea3a3 | 2014-09-07 15:39:34 -0700 | [diff] [blame] | 3 | * |
Rui Miguel Silva | ffe2e24 | 2015-11-12 15:36:02 +0000 | [diff] [blame] | 4 | * Copyright 2014-2015 Google Inc. |
| 5 | * Copyright 2014-2015 Linaro Ltd. |
Greg Kroah-Hartman | 33ea3a3 | 2014-09-07 15:39:34 -0700 | [diff] [blame] | 6 | * |
| 7 | * Released under the GPLv2 only. |
| 8 | */ |
| 9 | |
| 10 | #include <linux/kernel.h> |
| 11 | #include <linux/module.h> |
Greg Kroah-Hartman | 33ea3a3 | 2014-09-07 15:39:34 -0700 | [diff] [blame] | 12 | #include <linux/power_supply.h> |
Rui Miguel Silva | ffe2e24 | 2015-11-12 15:36:02 +0000 | [diff] [blame] | 13 | #include <linux/slab.h> |
| 14 | |
Greg Kroah-Hartman | 33ea3a3 | 2014-09-07 15:39:34 -0700 | [diff] [blame] | 15 | #include "greybus.h" |
| 16 | |
Rui Miguel Silva | ffe2e24 | 2015-11-12 15:36:02 +0000 | [diff] [blame] | 17 | #define PROP_MAX 32 |
Greg Kroah-Hartman | 2bb7eae | 2014-10-20 15:24:57 +0800 | [diff] [blame] | 18 | |
Rui Miguel Silva | ffe2e24 | 2015-11-12 15:36:02 +0000 | [diff] [blame] | 19 | struct gb_power_supply_prop { |
| 20 | enum power_supply_property prop; |
Rui Miguel Silva | 47becc5 | 2016-07-13 14:11:20 +0100 | [diff] [blame] | 21 | u8 gb_prop; |
Rui Miguel Silva | 6e720c2 | 2016-07-13 14:11:19 +0100 | [diff] [blame] | 22 | int val; |
| 23 | int previous_val; |
Rui Miguel Silva | ffe2e24 | 2015-11-12 15:36:02 +0000 | [diff] [blame] | 24 | bool is_writeable; |
Greg Kroah-Hartman | 33ea3a3 | 2014-09-07 15:39:34 -0700 | [diff] [blame] | 25 | }; |
Greg Kroah-Hartman | 33ea3a3 | 2014-09-07 15:39:34 -0700 | [diff] [blame] | 26 | |
Rui Miguel Silva | ffe2e24 | 2015-11-12 15:36:02 +0000 | [diff] [blame] | 27 | struct gb_power_supply { |
| 28 | u8 id; |
Rui Miguel Silva | ff85f72 | 2016-01-08 13:53:43 +0000 | [diff] [blame] | 29 | bool registered; |
Sandeep Patil | f8811c7 | 2016-03-15 12:28:38 -0700 | [diff] [blame] | 30 | #ifndef CORE_OWNS_PSY_STRUCT |
Rui Miguel Silva | ffe2e24 | 2015-11-12 15:36:02 +0000 | [diff] [blame] | 31 | struct power_supply psy; |
| 32 | #define to_gb_power_supply(x) container_of(x, struct gb_power_supply, psy) |
| 33 | #else |
| 34 | struct power_supply *psy; |
| 35 | struct power_supply_desc desc; |
| 36 | #define to_gb_power_supply(x) power_supply_get_drvdata(x) |
| 37 | #endif |
| 38 | char name[64]; |
| 39 | struct gb_power_supplies *supplies; |
| 40 | struct delayed_work work; |
| 41 | char *manufacturer; |
| 42 | char *model_name; |
| 43 | char *serial_number; |
| 44 | u8 type; |
| 45 | u8 properties_count; |
| 46 | u8 properties_count_str; |
| 47 | unsigned long last_update; |
Rui Miguel Silva | b5fbe81 | 2016-08-16 22:31:57 +0100 | [diff] [blame^] | 48 | u8 cache_invalid; |
Rui Miguel Silva | ffe2e24 | 2015-11-12 15:36:02 +0000 | [diff] [blame] | 49 | unsigned int update_interval; |
| 50 | bool changed; |
| 51 | struct gb_power_supply_prop *props; |
| 52 | enum power_supply_property *props_raw; |
| 53 | }; |
Greg Kroah-Hartman | c0855bf | 2014-10-21 14:31:24 +0800 | [diff] [blame] | 54 | |
Rui Miguel Silva | ffe2e24 | 2015-11-12 15:36:02 +0000 | [diff] [blame] | 55 | struct gb_power_supplies { |
| 56 | struct gb_connection *connection; |
| 57 | u8 supplies_count; |
| 58 | struct gb_power_supply *supply; |
| 59 | struct mutex supplies_lock; |
| 60 | }; |
| 61 | |
| 62 | /* cache time in milliseconds, if cache_time is set to 0 cache is disable */ |
| 63 | static unsigned int cache_time = 1000; |
| 64 | /* |
| 65 | * update interval initial and maximum value, between the two will |
| 66 | * back-off exponential |
| 67 | */ |
| 68 | static unsigned int update_interval_init = 1 * HZ; |
| 69 | static unsigned int update_interval_max = 30 * HZ; |
| 70 | |
| 71 | struct gb_power_supply_changes { |
| 72 | enum power_supply_property prop; |
| 73 | u32 tolerance_change; |
Rui Miguel Silva | c4582f9 | 2016-08-16 22:31:55 +0100 | [diff] [blame] | 74 | void (*prop_changed)(struct gb_power_supply *gbpsy, |
| 75 | struct gb_power_supply_prop *prop); |
Rui Miguel Silva | ffe2e24 | 2015-11-12 15:36:02 +0000 | [diff] [blame] | 76 | }; |
| 77 | |
| 78 | static const struct gb_power_supply_changes psy_props_changes[] = { |
Rui Miguel Silva | c4582f9 | 2016-08-16 22:31:55 +0100 | [diff] [blame] | 79 | { .prop = GB_POWER_SUPPLY_PROP_STATUS, |
| 80 | .tolerance_change = 0, |
| 81 | .prop_changed = NULL, |
Rui Miguel Silva | ffe2e24 | 2015-11-12 15:36:02 +0000 | [diff] [blame] | 82 | }, |
Rui Miguel Silva | c4582f9 | 2016-08-16 22:31:55 +0100 | [diff] [blame] | 83 | { .prop = GB_POWER_SUPPLY_PROP_TEMP, |
| 84 | .tolerance_change = 500, |
| 85 | .prop_changed = NULL, |
Rui Miguel Silva | ffe2e24 | 2015-11-12 15:36:02 +0000 | [diff] [blame] | 86 | }, |
Rui Miguel Silva | c4582f9 | 2016-08-16 22:31:55 +0100 | [diff] [blame] | 87 | { .prop = GB_POWER_SUPPLY_PROP_ONLINE, |
| 88 | .tolerance_change = 0, |
| 89 | .prop_changed = NULL, |
Rui Miguel Silva | ffe2e24 | 2015-11-12 15:36:02 +0000 | [diff] [blame] | 90 | }, |
| 91 | }; |
| 92 | |
Rui Miguel Silva | 47becc5 | 2016-07-13 14:11:20 +0100 | [diff] [blame] | 93 | static int get_psp_from_gb_prop(int gb_prop, enum power_supply_property *psp) |
| 94 | { |
| 95 | int prop; |
| 96 | |
| 97 | switch (gb_prop) { |
| 98 | case GB_POWER_SUPPLY_PROP_STATUS: |
| 99 | prop = POWER_SUPPLY_PROP_STATUS; |
| 100 | break; |
| 101 | case GB_POWER_SUPPLY_PROP_CHARGE_TYPE: |
| 102 | prop = POWER_SUPPLY_PROP_CHARGE_TYPE; |
| 103 | break; |
| 104 | case GB_POWER_SUPPLY_PROP_HEALTH: |
| 105 | prop = POWER_SUPPLY_PROP_HEALTH; |
| 106 | break; |
| 107 | case GB_POWER_SUPPLY_PROP_PRESENT: |
| 108 | prop = POWER_SUPPLY_PROP_PRESENT; |
| 109 | break; |
| 110 | case GB_POWER_SUPPLY_PROP_ONLINE: |
| 111 | prop = POWER_SUPPLY_PROP_ONLINE; |
| 112 | break; |
| 113 | case GB_POWER_SUPPLY_PROP_AUTHENTIC: |
| 114 | prop = POWER_SUPPLY_PROP_AUTHENTIC; |
| 115 | break; |
| 116 | case GB_POWER_SUPPLY_PROP_TECHNOLOGY: |
| 117 | prop = POWER_SUPPLY_PROP_TECHNOLOGY; |
| 118 | break; |
| 119 | case GB_POWER_SUPPLY_PROP_CYCLE_COUNT: |
| 120 | prop = POWER_SUPPLY_PROP_CYCLE_COUNT; |
| 121 | break; |
| 122 | case GB_POWER_SUPPLY_PROP_VOLTAGE_MAX: |
| 123 | prop = POWER_SUPPLY_PROP_VOLTAGE_MAX; |
| 124 | break; |
| 125 | case GB_POWER_SUPPLY_PROP_VOLTAGE_MIN: |
| 126 | prop = POWER_SUPPLY_PROP_VOLTAGE_MIN; |
| 127 | break; |
| 128 | case GB_POWER_SUPPLY_PROP_VOLTAGE_MAX_DESIGN: |
| 129 | prop = POWER_SUPPLY_PROP_VOLTAGE_MAX_DESIGN; |
| 130 | break; |
| 131 | case GB_POWER_SUPPLY_PROP_VOLTAGE_MIN_DESIGN: |
| 132 | prop = POWER_SUPPLY_PROP_VOLTAGE_MIN_DESIGN; |
| 133 | break; |
| 134 | case GB_POWER_SUPPLY_PROP_VOLTAGE_NOW: |
| 135 | prop = POWER_SUPPLY_PROP_VOLTAGE_NOW; |
| 136 | break; |
| 137 | case GB_POWER_SUPPLY_PROP_VOLTAGE_AVG: |
| 138 | prop = POWER_SUPPLY_PROP_VOLTAGE_AVG; |
| 139 | break; |
| 140 | case GB_POWER_SUPPLY_PROP_VOLTAGE_OCV: |
| 141 | prop = POWER_SUPPLY_PROP_VOLTAGE_OCV; |
| 142 | break; |
| 143 | case GB_POWER_SUPPLY_PROP_VOLTAGE_BOOT: |
| 144 | prop = POWER_SUPPLY_PROP_VOLTAGE_BOOT; |
| 145 | break; |
| 146 | case GB_POWER_SUPPLY_PROP_CURRENT_MAX: |
| 147 | prop = POWER_SUPPLY_PROP_CURRENT_MAX; |
| 148 | break; |
| 149 | case GB_POWER_SUPPLY_PROP_CURRENT_NOW: |
| 150 | prop = POWER_SUPPLY_PROP_CURRENT_NOW; |
| 151 | break; |
| 152 | case GB_POWER_SUPPLY_PROP_CURRENT_AVG: |
| 153 | prop = POWER_SUPPLY_PROP_CURRENT_AVG; |
| 154 | break; |
| 155 | case GB_POWER_SUPPLY_PROP_CURRENT_BOOT: |
| 156 | prop = POWER_SUPPLY_PROP_CURRENT_BOOT; |
| 157 | break; |
| 158 | case GB_POWER_SUPPLY_PROP_POWER_NOW: |
| 159 | prop = POWER_SUPPLY_PROP_POWER_NOW; |
| 160 | break; |
| 161 | case GB_POWER_SUPPLY_PROP_POWER_AVG: |
| 162 | prop = POWER_SUPPLY_PROP_POWER_AVG; |
| 163 | break; |
| 164 | case GB_POWER_SUPPLY_PROP_CHARGE_FULL_DESIGN: |
| 165 | prop = POWER_SUPPLY_PROP_CHARGE_FULL_DESIGN; |
| 166 | break; |
| 167 | case GB_POWER_SUPPLY_PROP_CHARGE_EMPTY_DESIGN: |
| 168 | prop = POWER_SUPPLY_PROP_CHARGE_EMPTY_DESIGN; |
| 169 | break; |
| 170 | case GB_POWER_SUPPLY_PROP_CHARGE_FULL: |
| 171 | prop = POWER_SUPPLY_PROP_CHARGE_FULL; |
| 172 | break; |
| 173 | case GB_POWER_SUPPLY_PROP_CHARGE_EMPTY: |
| 174 | prop = POWER_SUPPLY_PROP_CHARGE_EMPTY; |
| 175 | break; |
| 176 | case GB_POWER_SUPPLY_PROP_CHARGE_NOW: |
| 177 | prop = POWER_SUPPLY_PROP_CHARGE_NOW; |
| 178 | break; |
| 179 | case GB_POWER_SUPPLY_PROP_CHARGE_AVG: |
| 180 | prop = POWER_SUPPLY_PROP_CHARGE_AVG; |
| 181 | break; |
| 182 | case GB_POWER_SUPPLY_PROP_CHARGE_COUNTER: |
| 183 | prop = POWER_SUPPLY_PROP_CHARGE_COUNTER; |
| 184 | break; |
| 185 | case GB_POWER_SUPPLY_PROP_CONSTANT_CHARGE_CURRENT: |
| 186 | prop = POWER_SUPPLY_PROP_CONSTANT_CHARGE_CURRENT; |
| 187 | break; |
| 188 | case GB_POWER_SUPPLY_PROP_CONSTANT_CHARGE_CURRENT_MAX: |
| 189 | prop = POWER_SUPPLY_PROP_CONSTANT_CHARGE_CURRENT_MAX; |
| 190 | break; |
| 191 | case GB_POWER_SUPPLY_PROP_CONSTANT_CHARGE_VOLTAGE: |
| 192 | prop = POWER_SUPPLY_PROP_CONSTANT_CHARGE_VOLTAGE; |
| 193 | break; |
| 194 | case GB_POWER_SUPPLY_PROP_CONSTANT_CHARGE_VOLTAGE_MAX: |
| 195 | prop = POWER_SUPPLY_PROP_CONSTANT_CHARGE_VOLTAGE_MAX; |
| 196 | break; |
| 197 | case GB_POWER_SUPPLY_PROP_CHARGE_CONTROL_LIMIT: |
| 198 | prop = POWER_SUPPLY_PROP_CHARGE_CONTROL_LIMIT; |
| 199 | break; |
| 200 | case GB_POWER_SUPPLY_PROP_CHARGE_CONTROL_LIMIT_MAX: |
| 201 | prop = POWER_SUPPLY_PROP_CHARGE_CONTROL_LIMIT_MAX; |
| 202 | break; |
| 203 | case GB_POWER_SUPPLY_PROP_INPUT_CURRENT_LIMIT: |
| 204 | prop = POWER_SUPPLY_PROP_INPUT_CURRENT_LIMIT; |
| 205 | break; |
| 206 | case GB_POWER_SUPPLY_PROP_ENERGY_FULL_DESIGN: |
| 207 | prop = POWER_SUPPLY_PROP_ENERGY_FULL_DESIGN; |
| 208 | break; |
| 209 | case GB_POWER_SUPPLY_PROP_ENERGY_EMPTY_DESIGN: |
| 210 | prop = POWER_SUPPLY_PROP_ENERGY_EMPTY_DESIGN; |
| 211 | break; |
| 212 | case GB_POWER_SUPPLY_PROP_ENERGY_FULL: |
| 213 | prop = POWER_SUPPLY_PROP_ENERGY_FULL; |
| 214 | break; |
| 215 | case GB_POWER_SUPPLY_PROP_ENERGY_EMPTY: |
| 216 | prop = POWER_SUPPLY_PROP_ENERGY_EMPTY; |
| 217 | break; |
| 218 | case GB_POWER_SUPPLY_PROP_ENERGY_NOW: |
| 219 | prop = POWER_SUPPLY_PROP_ENERGY_NOW; |
| 220 | break; |
| 221 | case GB_POWER_SUPPLY_PROP_ENERGY_AVG: |
| 222 | prop = POWER_SUPPLY_PROP_ENERGY_AVG; |
| 223 | break; |
| 224 | case GB_POWER_SUPPLY_PROP_CAPACITY: |
| 225 | prop = POWER_SUPPLY_PROP_CAPACITY; |
| 226 | break; |
| 227 | case GB_POWER_SUPPLY_PROP_CAPACITY_ALERT_MIN: |
| 228 | prop = POWER_SUPPLY_PROP_CAPACITY_ALERT_MIN; |
| 229 | break; |
| 230 | case GB_POWER_SUPPLY_PROP_CAPACITY_ALERT_MAX: |
| 231 | prop = POWER_SUPPLY_PROP_CAPACITY_ALERT_MAX; |
| 232 | break; |
| 233 | case GB_POWER_SUPPLY_PROP_CAPACITY_LEVEL: |
| 234 | prop = POWER_SUPPLY_PROP_CAPACITY_LEVEL; |
| 235 | break; |
| 236 | case GB_POWER_SUPPLY_PROP_TEMP: |
| 237 | prop = POWER_SUPPLY_PROP_TEMP; |
| 238 | break; |
| 239 | case GB_POWER_SUPPLY_PROP_TEMP_MAX: |
| 240 | prop = POWER_SUPPLY_PROP_TEMP_MAX; |
| 241 | break; |
| 242 | case GB_POWER_SUPPLY_PROP_TEMP_MIN: |
| 243 | prop = POWER_SUPPLY_PROP_TEMP_MIN; |
| 244 | break; |
| 245 | case GB_POWER_SUPPLY_PROP_TEMP_ALERT_MIN: |
| 246 | prop = POWER_SUPPLY_PROP_TEMP_ALERT_MIN; |
| 247 | break; |
| 248 | case GB_POWER_SUPPLY_PROP_TEMP_ALERT_MAX: |
| 249 | prop = POWER_SUPPLY_PROP_TEMP_ALERT_MAX; |
| 250 | break; |
| 251 | case GB_POWER_SUPPLY_PROP_TEMP_AMBIENT: |
| 252 | prop = POWER_SUPPLY_PROP_TEMP_AMBIENT; |
| 253 | break; |
| 254 | case GB_POWER_SUPPLY_PROP_TEMP_AMBIENT_ALERT_MIN: |
| 255 | prop = POWER_SUPPLY_PROP_TEMP_AMBIENT_ALERT_MIN; |
| 256 | break; |
| 257 | case GB_POWER_SUPPLY_PROP_TEMP_AMBIENT_ALERT_MAX: |
| 258 | prop = POWER_SUPPLY_PROP_TEMP_AMBIENT_ALERT_MAX; |
| 259 | break; |
| 260 | case GB_POWER_SUPPLY_PROP_TIME_TO_EMPTY_NOW: |
| 261 | prop = POWER_SUPPLY_PROP_TIME_TO_EMPTY_NOW; |
| 262 | break; |
| 263 | case GB_POWER_SUPPLY_PROP_TIME_TO_EMPTY_AVG: |
| 264 | prop = POWER_SUPPLY_PROP_TIME_TO_EMPTY_AVG; |
| 265 | break; |
| 266 | case GB_POWER_SUPPLY_PROP_TIME_TO_FULL_NOW: |
| 267 | prop = POWER_SUPPLY_PROP_TIME_TO_FULL_NOW; |
| 268 | break; |
| 269 | case GB_POWER_SUPPLY_PROP_TIME_TO_FULL_AVG: |
| 270 | prop = POWER_SUPPLY_PROP_TIME_TO_FULL_AVG; |
| 271 | break; |
| 272 | case GB_POWER_SUPPLY_PROP_TYPE: |
| 273 | prop = POWER_SUPPLY_PROP_TYPE; |
| 274 | break; |
| 275 | case GB_POWER_SUPPLY_PROP_SCOPE: |
| 276 | prop = POWER_SUPPLY_PROP_SCOPE; |
| 277 | break; |
| 278 | case GB_POWER_SUPPLY_PROP_CHARGE_TERM_CURRENT: |
| 279 | prop = POWER_SUPPLY_PROP_CHARGE_TERM_CURRENT; |
| 280 | break; |
| 281 | case GB_POWER_SUPPLY_PROP_CALIBRATE: |
| 282 | prop = POWER_SUPPLY_PROP_CALIBRATE; |
| 283 | break; |
| 284 | default: |
| 285 | prop = -1; |
| 286 | break; |
| 287 | } |
| 288 | |
| 289 | if (prop < 0) |
| 290 | return prop; |
| 291 | |
| 292 | *psp = (enum power_supply_property)prop; |
| 293 | |
| 294 | return 0; |
| 295 | } |
| 296 | |
Rui Miguel Silva | ffe2e24 | 2015-11-12 15:36:02 +0000 | [diff] [blame] | 297 | static struct gb_connection *get_conn_from_psy(struct gb_power_supply *gbpsy) |
| 298 | { |
| 299 | return gbpsy->supplies->connection; |
| 300 | } |
| 301 | |
| 302 | static struct gb_power_supply_prop *get_psy_prop(struct gb_power_supply *gbpsy, |
| 303 | enum power_supply_property psp) |
| 304 | { |
| 305 | int i; |
| 306 | |
| 307 | for (i = 0; i < gbpsy->properties_count; i++) |
| 308 | if (gbpsy->props[i].prop == psp) |
| 309 | return &gbpsy->props[i]; |
| 310 | return NULL; |
| 311 | } |
| 312 | |
| 313 | static int is_psy_prop_writeable(struct gb_power_supply *gbpsy, |
| 314 | enum power_supply_property psp) |
| 315 | { |
| 316 | struct gb_power_supply_prop *prop; |
| 317 | |
| 318 | prop = get_psy_prop(gbpsy, psp); |
| 319 | if (!prop) |
| 320 | return -ENOENT; |
| 321 | return prop->is_writeable ? 1 : 0; |
| 322 | } |
| 323 | |
| 324 | static int is_prop_valint(enum power_supply_property psp) |
| 325 | { |
| 326 | return ((psp < POWER_SUPPLY_PROP_MODEL_NAME) ? 1 : 0); |
| 327 | } |
| 328 | |
| 329 | static void next_interval(struct gb_power_supply *gbpsy) |
| 330 | { |
| 331 | if (gbpsy->update_interval == update_interval_max) |
| 332 | return; |
| 333 | |
| 334 | /* do some exponential back-off in the update interval */ |
| 335 | gbpsy->update_interval *= 2; |
| 336 | if (gbpsy->update_interval > update_interval_max) |
| 337 | gbpsy->update_interval = update_interval_max; |
| 338 | } |
| 339 | |
Sandeep Patil | f8811c7 | 2016-03-15 12:28:38 -0700 | [diff] [blame] | 340 | #ifndef CORE_OWNS_PSY_STRUCT |
Rui Miguel Silva | ffe2e24 | 2015-11-12 15:36:02 +0000 | [diff] [blame] | 341 | static void __gb_power_supply_changed(struct gb_power_supply *gbpsy) |
| 342 | { |
| 343 | power_supply_changed(&gbpsy->psy); |
| 344 | } |
| 345 | #else |
| 346 | static void __gb_power_supply_changed(struct gb_power_supply *gbpsy) |
| 347 | { |
| 348 | power_supply_changed(gbpsy->psy); |
| 349 | } |
| 350 | #endif |
| 351 | |
| 352 | static void check_changed(struct gb_power_supply *gbpsy, |
| 353 | struct gb_power_supply_prop *prop) |
| 354 | { |
| 355 | const struct gb_power_supply_changes *psyc; |
Rui Miguel Silva | 6e720c2 | 2016-07-13 14:11:19 +0100 | [diff] [blame] | 356 | int val = prop->val; |
| 357 | int prev_val = prop->previous_val; |
Rui Miguel Silva | c4582f9 | 2016-08-16 22:31:55 +0100 | [diff] [blame] | 358 | bool changed = false; |
Rui Miguel Silva | ffe2e24 | 2015-11-12 15:36:02 +0000 | [diff] [blame] | 359 | int i; |
| 360 | |
| 361 | for (i = 0; i < ARRAY_SIZE(psy_props_changes); i++) { |
| 362 | psyc = &psy_props_changes[i]; |
| 363 | if (prop->prop == psyc->prop) { |
| 364 | if (!psyc->tolerance_change) |
Rui Miguel Silva | c4582f9 | 2016-08-16 22:31:55 +0100 | [diff] [blame] | 365 | changed = true; |
Rui Miguel Silva | ffe2e24 | 2015-11-12 15:36:02 +0000 | [diff] [blame] | 366 | else if (val < prev_val && |
| 367 | prev_val - val > psyc->tolerance_change) |
Rui Miguel Silva | c4582f9 | 2016-08-16 22:31:55 +0100 | [diff] [blame] | 368 | changed = true; |
Rui Miguel Silva | ffe2e24 | 2015-11-12 15:36:02 +0000 | [diff] [blame] | 369 | else if (val > prev_val && |
| 370 | val - prev_val > psyc->tolerance_change) |
Rui Miguel Silva | c4582f9 | 2016-08-16 22:31:55 +0100 | [diff] [blame] | 371 | changed = true; |
| 372 | |
| 373 | if (changed && psyc->prop_changed) |
| 374 | psyc->prop_changed(gbpsy, prop); |
| 375 | |
| 376 | if (changed) |
Rui Miguel Silva | ffe2e24 | 2015-11-12 15:36:02 +0000 | [diff] [blame] | 377 | gbpsy->changed = true; |
| 378 | break; |
| 379 | } |
| 380 | } |
| 381 | } |
| 382 | |
| 383 | static int total_props(struct gb_power_supply *gbpsy) |
| 384 | { |
| 385 | /* this return the intval plus the strval properties */ |
| 386 | return (gbpsy->properties_count + gbpsy->properties_count_str); |
| 387 | } |
| 388 | |
| 389 | static void prop_append(struct gb_power_supply *gbpsy, |
| 390 | enum power_supply_property prop) |
| 391 | { |
| 392 | enum power_supply_property *new_props_raw; |
| 393 | |
| 394 | gbpsy->properties_count_str++; |
| 395 | new_props_raw = krealloc(gbpsy->props_raw, total_props(gbpsy) * |
| 396 | sizeof(enum power_supply_property), |
| 397 | GFP_KERNEL); |
| 398 | if (!new_props_raw) |
| 399 | return; |
| 400 | gbpsy->props_raw = new_props_raw; |
| 401 | gbpsy->props_raw[total_props(gbpsy) - 1] = prop; |
| 402 | } |
| 403 | |
| 404 | static int __gb_power_supply_set_name(char *init_name, char *name, size_t len) |
| 405 | { |
| 406 | unsigned int i = 0; |
| 407 | int ret = 0; |
| 408 | struct power_supply *psy; |
| 409 | |
| 410 | if (!strlen(init_name)) |
| 411 | init_name = "gb_power_supply"; |
| 412 | strlcpy(name, init_name, len); |
| 413 | |
| 414 | while ((ret < len) && (psy = power_supply_get_by_name(name))) { |
| 415 | #ifdef PSY_HAVE_PUT |
| 416 | power_supply_put(psy); |
| 417 | #endif |
| 418 | ret = snprintf(name, len, "%s_%u", init_name, ++i); |
| 419 | } |
| 420 | if (ret >= len) |
| 421 | return -ENOMEM; |
| 422 | return i; |
| 423 | } |
| 424 | |
| 425 | static void _gb_power_supply_append_props(struct gb_power_supply *gbpsy) |
| 426 | { |
| 427 | if (strlen(gbpsy->manufacturer)) |
| 428 | prop_append(gbpsy, POWER_SUPPLY_PROP_MANUFACTURER); |
| 429 | if (strlen(gbpsy->model_name)) |
| 430 | prop_append(gbpsy, POWER_SUPPLY_PROP_MODEL_NAME); |
| 431 | if (strlen(gbpsy->serial_number)) |
| 432 | prop_append(gbpsy, POWER_SUPPLY_PROP_SERIAL_NUMBER); |
| 433 | } |
| 434 | |
| 435 | static int gb_power_supply_description_get(struct gb_power_supply *gbpsy) |
| 436 | { |
| 437 | struct gb_connection *connection = get_conn_from_psy(gbpsy); |
| 438 | struct gb_power_supply_get_description_request req; |
| 439 | struct gb_power_supply_get_description_response resp; |
| 440 | int ret; |
| 441 | |
| 442 | req.psy_id = gbpsy->id; |
| 443 | |
| 444 | ret = gb_operation_sync(connection, |
| 445 | GB_POWER_SUPPLY_TYPE_GET_DESCRIPTION, |
| 446 | &req, sizeof(req), &resp, sizeof(resp)); |
| 447 | if (ret < 0) |
| 448 | return ret; |
| 449 | |
| 450 | gbpsy->manufacturer = kstrndup(resp.manufacturer, PROP_MAX, GFP_KERNEL); |
| 451 | if (!gbpsy->manufacturer) |
| 452 | return -ENOMEM; |
| 453 | gbpsy->model_name = kstrndup(resp.model, PROP_MAX, GFP_KERNEL); |
| 454 | if (!gbpsy->model_name) |
| 455 | return -ENOMEM; |
| 456 | gbpsy->serial_number = kstrndup(resp.serial_number, PROP_MAX, |
| 457 | GFP_KERNEL); |
| 458 | if (!gbpsy->serial_number) |
| 459 | return -ENOMEM; |
| 460 | |
| 461 | gbpsy->type = le16_to_cpu(resp.type); |
| 462 | gbpsy->properties_count = resp.properties_count; |
| 463 | |
| 464 | return 0; |
| 465 | } |
| 466 | |
| 467 | static int gb_power_supply_prop_descriptors_get(struct gb_power_supply *gbpsy) |
| 468 | { |
| 469 | struct gb_connection *connection = get_conn_from_psy(gbpsy); |
Rui Miguel Silva | 9d15134 | 2016-02-04 14:00:36 +0000 | [diff] [blame] | 470 | struct gb_power_supply_get_property_descriptors_request *req; |
| 471 | struct gb_power_supply_get_property_descriptors_response *resp; |
| 472 | struct gb_operation *op; |
| 473 | u8 props_count = gbpsy->properties_count; |
Rui Miguel Silva | 47becc5 | 2016-07-13 14:11:20 +0100 | [diff] [blame] | 474 | enum power_supply_property psp; |
Rui Miguel Silva | ffe2e24 | 2015-11-12 15:36:02 +0000 | [diff] [blame] | 475 | int ret; |
Rui Miguel Silva | 47becc5 | 2016-07-13 14:11:20 +0100 | [diff] [blame] | 476 | int i, r = 0; |
Rui Miguel Silva | ffe2e24 | 2015-11-12 15:36:02 +0000 | [diff] [blame] | 477 | |
Rui Miguel Silva | 9d15134 | 2016-02-04 14:00:36 +0000 | [diff] [blame] | 478 | if (props_count == 0) |
Rui Miguel Silva | ffe2e24 | 2015-11-12 15:36:02 +0000 | [diff] [blame] | 479 | return 0; |
| 480 | |
Rui Miguel Silva | 9d15134 | 2016-02-04 14:00:36 +0000 | [diff] [blame] | 481 | op = gb_operation_create(connection, |
| 482 | GB_POWER_SUPPLY_TYPE_GET_PROP_DESCRIPTORS, |
| 483 | sizeof(req), sizeof(*resp) + props_count * |
| 484 | sizeof(struct gb_power_supply_props_desc), |
| 485 | GFP_KERNEL); |
| 486 | if (!op) |
| 487 | return -ENOMEM; |
Rui Miguel Silva | ffe2e24 | 2015-11-12 15:36:02 +0000 | [diff] [blame] | 488 | |
Rui Miguel Silva | 9d15134 | 2016-02-04 14:00:36 +0000 | [diff] [blame] | 489 | req = op->request->payload; |
| 490 | req->psy_id = gbpsy->id; |
| 491 | |
| 492 | ret = gb_operation_request_send_sync(op); |
Rui Miguel Silva | ffe2e24 | 2015-11-12 15:36:02 +0000 | [diff] [blame] | 493 | if (ret < 0) |
Rui Miguel Silva | 9d15134 | 2016-02-04 14:00:36 +0000 | [diff] [blame] | 494 | goto out_put_operation; |
| 495 | |
| 496 | resp = op->response->payload; |
Rui Miguel Silva | ffe2e24 | 2015-11-12 15:36:02 +0000 | [diff] [blame] | 497 | |
Rui Miguel Silva | 47becc5 | 2016-07-13 14:11:20 +0100 | [diff] [blame] | 498 | /* validate received properties */ |
| 499 | for (i = 0; i < props_count; i++) { |
| 500 | ret = get_psp_from_gb_prop(resp->props[i].property, &psp); |
| 501 | if (ret < 0) { |
| 502 | dev_warn(&connection->bundle->dev, |
| 503 | "greybus property %u it is not supported by this kernel, dropped\n", |
| 504 | resp->props[i].property); |
| 505 | gbpsy->properties_count--; |
| 506 | } |
| 507 | } |
| 508 | |
Rui Miguel Silva | ffe2e24 | 2015-11-12 15:36:02 +0000 | [diff] [blame] | 509 | gbpsy->props = kcalloc(gbpsy->properties_count, sizeof(*gbpsy->props), |
| 510 | GFP_KERNEL); |
Rui Miguel Silva | 9d15134 | 2016-02-04 14:00:36 +0000 | [diff] [blame] | 511 | if (!gbpsy->props) { |
| 512 | ret = -ENOMEM; |
| 513 | goto out_put_operation; |
| 514 | } |
Rui Miguel Silva | ffe2e24 | 2015-11-12 15:36:02 +0000 | [diff] [blame] | 515 | |
Rui Miguel Silva | 9d15134 | 2016-02-04 14:00:36 +0000 | [diff] [blame] | 516 | gbpsy->props_raw = kcalloc(gbpsy->properties_count, |
| 517 | sizeof(*gbpsy->props_raw), GFP_KERNEL); |
| 518 | if (!gbpsy->props_raw) { |
| 519 | ret = -ENOMEM; |
| 520 | goto out_put_operation; |
| 521 | } |
| 522 | |
Rui Miguel Silva | 47becc5 | 2016-07-13 14:11:20 +0100 | [diff] [blame] | 523 | /* Store available properties, skip the ones we do not support */ |
| 524 | for (i = 0; i < props_count; i++) { |
| 525 | ret = get_psp_from_gb_prop(resp->props[i].property, &psp); |
| 526 | if (ret < 0) { |
| 527 | r++; |
| 528 | continue; |
| 529 | } |
| 530 | gbpsy->props[i - r].prop = psp; |
| 531 | gbpsy->props[i - r].gb_prop = resp->props[i].property; |
| 532 | gbpsy->props_raw[i - r] = psp; |
Rui Miguel Silva | 9d15134 | 2016-02-04 14:00:36 +0000 | [diff] [blame] | 533 | if (resp->props[i].is_writeable) |
Rui Miguel Silva | 47becc5 | 2016-07-13 14:11:20 +0100 | [diff] [blame] | 534 | gbpsy->props[i - r].is_writeable = true; |
Rui Miguel Silva | ffe2e24 | 2015-11-12 15:36:02 +0000 | [diff] [blame] | 535 | } |
Greg Kroah-Hartman | c0855bf | 2014-10-21 14:31:24 +0800 | [diff] [blame] | 536 | |
| 537 | /* |
Rui Miguel Silva | ffe2e24 | 2015-11-12 15:36:02 +0000 | [diff] [blame] | 538 | * now append the properties that we already got information in the |
| 539 | * get_description operation. (char * ones) |
Greg Kroah-Hartman | c0855bf | 2014-10-21 14:31:24 +0800 | [diff] [blame] | 540 | */ |
Rui Miguel Silva | ffe2e24 | 2015-11-12 15:36:02 +0000 | [diff] [blame] | 541 | _gb_power_supply_append_props(gbpsy); |
| 542 | |
Rui Miguel Silva | 47becc5 | 2016-07-13 14:11:20 +0100 | [diff] [blame] | 543 | ret = 0; |
Rui Miguel Silva | 9d15134 | 2016-02-04 14:00:36 +0000 | [diff] [blame] | 544 | out_put_operation: |
| 545 | gb_operation_put(op); |
| 546 | |
| 547 | return ret; |
Greg Kroah-Hartman | 43789c3 | 2014-10-20 15:09:49 +0800 | [diff] [blame] | 548 | } |
| 549 | |
Rui Miguel Silva | ffe2e24 | 2015-11-12 15:36:02 +0000 | [diff] [blame] | 550 | static int __gb_power_supply_property_update(struct gb_power_supply *gbpsy, |
| 551 | enum power_supply_property psp) |
Greg Kroah-Hartman | 33ea3a3 | 2014-09-07 15:39:34 -0700 | [diff] [blame] | 552 | { |
Rui Miguel Silva | ffe2e24 | 2015-11-12 15:36:02 +0000 | [diff] [blame] | 553 | struct gb_connection *connection = get_conn_from_psy(gbpsy); |
| 554 | struct gb_power_supply_prop *prop; |
| 555 | struct gb_power_supply_get_property_request req; |
| 556 | struct gb_power_supply_get_property_response resp; |
Rui Miguel Silva | 6e720c2 | 2016-07-13 14:11:19 +0100 | [diff] [blame] | 557 | int val; |
Rui Miguel Silva | ffe2e24 | 2015-11-12 15:36:02 +0000 | [diff] [blame] | 558 | int ret; |
Greg Kroah-Hartman | c0855bf | 2014-10-21 14:31:24 +0800 | [diff] [blame] | 559 | |
Rui Miguel Silva | ffe2e24 | 2015-11-12 15:36:02 +0000 | [diff] [blame] | 560 | prop = get_psy_prop(gbpsy, psp); |
| 561 | if (!prop) |
| 562 | return -EINVAL; |
| 563 | req.psy_id = gbpsy->id; |
Rui Miguel Silva | 47becc5 | 2016-07-13 14:11:20 +0100 | [diff] [blame] | 564 | req.property = prop->gb_prop; |
Rui Miguel Silva | ffe2e24 | 2015-11-12 15:36:02 +0000 | [diff] [blame] | 565 | |
| 566 | ret = gb_operation_sync(connection, GB_POWER_SUPPLY_TYPE_GET_PROPERTY, |
| 567 | &req, sizeof(req), &resp, sizeof(resp)); |
| 568 | if (ret < 0) |
| 569 | return ret; |
| 570 | |
| 571 | val = le32_to_cpu(resp.prop_val); |
| 572 | if (val == prop->val) |
| 573 | return 0; |
| 574 | |
| 575 | prop->previous_val = prop->val; |
| 576 | prop->val = val; |
| 577 | |
| 578 | check_changed(gbpsy, prop); |
| 579 | |
| 580 | return 0; |
| 581 | } |
| 582 | |
| 583 | static int __gb_power_supply_property_get(struct gb_power_supply *gbpsy, |
| 584 | enum power_supply_property psp, |
| 585 | union power_supply_propval *val) |
| 586 | { |
| 587 | struct gb_power_supply_prop *prop; |
| 588 | |
| 589 | prop = get_psy_prop(gbpsy, psp); |
| 590 | if (!prop) |
| 591 | return -EINVAL; |
| 592 | |
| 593 | val->intval = prop->val; |
| 594 | return 0; |
| 595 | } |
| 596 | |
| 597 | static int __gb_power_supply_property_strval_get(struct gb_power_supply *gbpsy, |
| 598 | enum power_supply_property psp, |
| 599 | union power_supply_propval *val) |
| 600 | { |
| 601 | switch (psp) { |
| 602 | case POWER_SUPPLY_PROP_MODEL_NAME: |
Rui Miguel Silva | f921fb1 | 2016-01-08 13:53:46 +0000 | [diff] [blame] | 603 | val->strval = gbpsy->model_name; |
Rui Miguel Silva | ffe2e24 | 2015-11-12 15:36:02 +0000 | [diff] [blame] | 604 | break; |
| 605 | case POWER_SUPPLY_PROP_MANUFACTURER: |
Rui Miguel Silva | f921fb1 | 2016-01-08 13:53:46 +0000 | [diff] [blame] | 606 | val->strval = gbpsy->manufacturer; |
Rui Miguel Silva | ffe2e24 | 2015-11-12 15:36:02 +0000 | [diff] [blame] | 607 | break; |
| 608 | case POWER_SUPPLY_PROP_SERIAL_NUMBER: |
Rui Miguel Silva | f921fb1 | 2016-01-08 13:53:46 +0000 | [diff] [blame] | 609 | val->strval = gbpsy->serial_number; |
Rui Miguel Silva | ffe2e24 | 2015-11-12 15:36:02 +0000 | [diff] [blame] | 610 | break; |
| 611 | default: |
| 612 | break; |
| 613 | } |
| 614 | |
| 615 | return 0; |
| 616 | } |
| 617 | |
| 618 | static int _gb_power_supply_property_get(struct gb_power_supply *gbpsy, |
| 619 | enum power_supply_property psp, |
| 620 | union power_supply_propval *val) |
| 621 | { |
| 622 | struct gb_connection *connection = get_conn_from_psy(gbpsy); |
| 623 | int ret; |
Greg Kroah-Hartman | c0855bf | 2014-10-21 14:31:24 +0800 | [diff] [blame] | 624 | |
| 625 | /* |
Rui Miguel Silva | ffe2e24 | 2015-11-12 15:36:02 +0000 | [diff] [blame] | 626 | * Properties of type const char *, were already fetched on |
| 627 | * get_description operation and should be cached in gb |
Greg Kroah-Hartman | c0855bf | 2014-10-21 14:31:24 +0800 | [diff] [blame] | 628 | */ |
Rui Miguel Silva | ffe2e24 | 2015-11-12 15:36:02 +0000 | [diff] [blame] | 629 | if (is_prop_valint(psp)) |
| 630 | ret = __gb_power_supply_property_get(gbpsy, psp, val); |
| 631 | else |
| 632 | ret = __gb_power_supply_property_strval_get(gbpsy, psp, val); |
| 633 | |
| 634 | if (ret < 0) |
| 635 | dev_err(&connection->bundle->dev, "get property %u\n", psp); |
| 636 | |
| 637 | return 0; |
| 638 | } |
| 639 | |
Rui Miguel Silva | b5fbe81 | 2016-08-16 22:31:57 +0100 | [diff] [blame^] | 640 | static int is_cache_valid(struct gb_power_supply *gbpsy) |
| 641 | { |
| 642 | /* check if cache is good enough or it has expired */ |
| 643 | if (gbpsy->cache_invalid) { |
| 644 | gbpsy->cache_invalid = 0; |
| 645 | return 0; |
| 646 | } |
| 647 | |
| 648 | if (gbpsy->last_update && |
| 649 | time_is_after_jiffies(gbpsy->last_update + |
| 650 | msecs_to_jiffies(cache_time))) |
| 651 | return 1; |
| 652 | |
| 653 | return 0; |
| 654 | } |
| 655 | |
Rui Miguel Silva | ffe2e24 | 2015-11-12 15:36:02 +0000 | [diff] [blame] | 656 | static int gb_power_supply_status_get(struct gb_power_supply *gbpsy) |
| 657 | { |
| 658 | int ret = 0; |
| 659 | int i; |
| 660 | |
Rui Miguel Silva | b5fbe81 | 2016-08-16 22:31:57 +0100 | [diff] [blame^] | 661 | if (is_cache_valid(gbpsy)) |
Rui Miguel Silva | ffe2e24 | 2015-11-12 15:36:02 +0000 | [diff] [blame] | 662 | return 0; |
| 663 | |
| 664 | for (i = 0; i < gbpsy->properties_count; i++) { |
| 665 | ret = __gb_power_supply_property_update(gbpsy, |
| 666 | gbpsy->props[i].prop); |
| 667 | if (ret < 0) |
| 668 | break; |
Greg Kroah-Hartman | 0369a45 | 2014-10-21 16:25:13 +0800 | [diff] [blame] | 669 | } |
Rui Miguel Silva | ffe2e24 | 2015-11-12 15:36:02 +0000 | [diff] [blame] | 670 | |
| 671 | if (ret == 0) |
| 672 | gbpsy->last_update = jiffies; |
| 673 | |
| 674 | return ret; |
Greg Kroah-Hartman | 33ea3a3 | 2014-09-07 15:39:34 -0700 | [diff] [blame] | 675 | } |
| 676 | |
Rui Miguel Silva | ffe2e24 | 2015-11-12 15:36:02 +0000 | [diff] [blame] | 677 | static void gb_power_supply_status_update(struct gb_power_supply *gbpsy) |
Greg Kroah-Hartman | 43789c3 | 2014-10-20 15:09:49 +0800 | [diff] [blame] | 678 | { |
Rui Miguel Silva | ffe2e24 | 2015-11-12 15:36:02 +0000 | [diff] [blame] | 679 | /* check if there a change that need to be reported */ |
| 680 | gb_power_supply_status_get(gbpsy); |
Greg Kroah-Hartman | c0855bf | 2014-10-21 14:31:24 +0800 | [diff] [blame] | 681 | |
Rui Miguel Silva | ffe2e24 | 2015-11-12 15:36:02 +0000 | [diff] [blame] | 682 | if (!gbpsy->changed) |
| 683 | return; |
Greg Kroah-Hartman | c0855bf | 2014-10-21 14:31:24 +0800 | [diff] [blame] | 684 | |
Rui Miguel Silva | ffe2e24 | 2015-11-12 15:36:02 +0000 | [diff] [blame] | 685 | gbpsy->update_interval = update_interval_init; |
| 686 | __gb_power_supply_changed(gbpsy); |
| 687 | gbpsy->changed = false; |
Greg Kroah-Hartman | 43789c3 | 2014-10-20 15:09:49 +0800 | [diff] [blame] | 688 | } |
| 689 | |
Rui Miguel Silva | ffe2e24 | 2015-11-12 15:36:02 +0000 | [diff] [blame] | 690 | static void gb_power_supply_work(struct work_struct *work) |
Greg Kroah-Hartman | 33ea3a3 | 2014-09-07 15:39:34 -0700 | [diff] [blame] | 691 | { |
Rui Miguel Silva | ffe2e24 | 2015-11-12 15:36:02 +0000 | [diff] [blame] | 692 | struct gb_power_supply *gbpsy = container_of(work, |
| 693 | struct gb_power_supply, |
| 694 | work.work); |
Greg Kroah-Hartman | c0855bf | 2014-10-21 14:31:24 +0800 | [diff] [blame] | 695 | |
Rui Miguel Silva | ffe2e24 | 2015-11-12 15:36:02 +0000 | [diff] [blame] | 696 | /* |
| 697 | * if the poll interval is not set, disable polling, this is helpful |
| 698 | * specially at unregister time. |
| 699 | */ |
| 700 | if (!gbpsy->update_interval) |
| 701 | return; |
Greg Kroah-Hartman | c0855bf | 2014-10-21 14:31:24 +0800 | [diff] [blame] | 702 | |
Rui Miguel Silva | ffe2e24 | 2015-11-12 15:36:02 +0000 | [diff] [blame] | 703 | gb_power_supply_status_update(gbpsy); |
| 704 | next_interval(gbpsy); |
| 705 | schedule_delayed_work(&gbpsy->work, gbpsy->update_interval); |
Greg Kroah-Hartman | 33ea3a3 | 2014-09-07 15:39:34 -0700 | [diff] [blame] | 706 | } |
| 707 | |
Greg Kroah-Hartman | 33ea3a3 | 2014-09-07 15:39:34 -0700 | [diff] [blame] | 708 | static int get_property(struct power_supply *b, |
| 709 | enum power_supply_property psp, |
| 710 | union power_supply_propval *val) |
| 711 | { |
Rui Miguel Silva | ffe2e24 | 2015-11-12 15:36:02 +0000 | [diff] [blame] | 712 | struct gb_power_supply *gbpsy = to_gb_power_supply(b); |
Greg Kroah-Hartman | 33ea3a3 | 2014-09-07 15:39:34 -0700 | [diff] [blame] | 713 | |
Rui Miguel Silva | ffe2e24 | 2015-11-12 15:36:02 +0000 | [diff] [blame] | 714 | gb_power_supply_status_get(gbpsy); |
Greg Kroah-Hartman | 33ea3a3 | 2014-09-07 15:39:34 -0700 | [diff] [blame] | 715 | |
Rui Miguel Silva | ffe2e24 | 2015-11-12 15:36:02 +0000 | [diff] [blame] | 716 | return _gb_power_supply_property_get(gbpsy, psp, val); |
Greg Kroah-Hartman | 33ea3a3 | 2014-09-07 15:39:34 -0700 | [diff] [blame] | 717 | } |
| 718 | |
Rui Miguel Silva | ffe2e24 | 2015-11-12 15:36:02 +0000 | [diff] [blame] | 719 | static int gb_power_supply_property_set(struct gb_power_supply *gbpsy, |
| 720 | enum power_supply_property psp, |
| 721 | int val) |
| 722 | { |
| 723 | struct gb_connection *connection = get_conn_from_psy(gbpsy); |
| 724 | struct gb_power_supply_prop *prop; |
| 725 | struct gb_power_supply_set_property_request req; |
| 726 | int ret; |
| 727 | |
| 728 | prop = get_psy_prop(gbpsy, psp); |
| 729 | if (!prop) |
| 730 | return -EINVAL; |
| 731 | req.psy_id = gbpsy->id; |
Rui Miguel Silva | 47becc5 | 2016-07-13 14:11:20 +0100 | [diff] [blame] | 732 | req.property = prop->gb_prop; |
Rui Miguel Silva | 6e720c2 | 2016-07-13 14:11:19 +0100 | [diff] [blame] | 733 | req.prop_val = cpu_to_le32((s32)val); |
Rui Miguel Silva | ffe2e24 | 2015-11-12 15:36:02 +0000 | [diff] [blame] | 734 | |
| 735 | ret = gb_operation_sync(connection, GB_POWER_SUPPLY_TYPE_SET_PROPERTY, |
| 736 | &req, sizeof(req), NULL, 0); |
| 737 | if (ret < 0) |
| 738 | goto out; |
| 739 | |
| 740 | /* cache immediately the new value */ |
| 741 | prop->val = val; |
| 742 | |
| 743 | out: |
| 744 | return ret; |
| 745 | } |
| 746 | |
| 747 | static int set_property(struct power_supply *b, |
| 748 | enum power_supply_property psp, |
| 749 | const union power_supply_propval *val) |
| 750 | { |
| 751 | struct gb_power_supply *gbpsy = to_gb_power_supply(b); |
| 752 | |
| 753 | return gb_power_supply_property_set(gbpsy, psp, val->intval); |
| 754 | } |
| 755 | |
| 756 | static int property_is_writeable(struct power_supply *b, |
| 757 | enum power_supply_property psp) |
| 758 | { |
| 759 | struct gb_power_supply *gbpsy = to_gb_power_supply(b); |
| 760 | |
| 761 | return is_psy_prop_writeable(gbpsy, psp); |
| 762 | } |
| 763 | |
Sandeep Patil | f8811c7 | 2016-03-15 12:28:38 -0700 | [diff] [blame] | 764 | #ifndef CORE_OWNS_PSY_STRUCT |
Rui Miguel Silva | ffe2e24 | 2015-11-12 15:36:02 +0000 | [diff] [blame] | 765 | static int gb_power_supply_register(struct gb_power_supply *gbpsy) |
Greg Kroah-Hartman | a549be51 | 2015-05-01 20:41:00 +0200 | [diff] [blame] | 766 | { |
Rui Miguel Silva | ffe2e24 | 2015-11-12 15:36:02 +0000 | [diff] [blame] | 767 | struct gb_connection *connection = get_conn_from_psy(gbpsy); |
Greg Kroah-Hartman | a549be51 | 2015-05-01 20:41:00 +0200 | [diff] [blame] | 768 | |
Rui Miguel Silva | ffe2e24 | 2015-11-12 15:36:02 +0000 | [diff] [blame] | 769 | gbpsy->psy.name = gbpsy->name; |
| 770 | gbpsy->psy.type = gbpsy->type; |
| 771 | gbpsy->psy.properties = gbpsy->props_raw; |
| 772 | gbpsy->psy.num_properties = total_props(gbpsy); |
| 773 | gbpsy->psy.get_property = get_property; |
| 774 | gbpsy->psy.set_property = set_property; |
| 775 | gbpsy->psy.property_is_writeable = property_is_writeable; |
| 776 | |
| 777 | return power_supply_register(&connection->bundle->dev, |
| 778 | &gbpsy->psy); |
Greg Kroah-Hartman | a549be51 | 2015-05-01 20:41:00 +0200 | [diff] [blame] | 779 | } |
| 780 | #else |
Rui Miguel Silva | ffe2e24 | 2015-11-12 15:36:02 +0000 | [diff] [blame] | 781 | static int gb_power_supply_register(struct gb_power_supply *gbpsy) |
Greg Kroah-Hartman | a549be51 | 2015-05-01 20:41:00 +0200 | [diff] [blame] | 782 | { |
Rui Miguel Silva | ffe2e24 | 2015-11-12 15:36:02 +0000 | [diff] [blame] | 783 | struct gb_connection *connection = get_conn_from_psy(gbpsy); |
Greg Kroah-Hartman | a549be51 | 2015-05-01 20:41:00 +0200 | [diff] [blame] | 784 | struct power_supply_config cfg = {}; |
Greg Kroah-Hartman | a549be51 | 2015-05-01 20:41:00 +0200 | [diff] [blame] | 785 | |
Rui Miguel Silva | ffe2e24 | 2015-11-12 15:36:02 +0000 | [diff] [blame] | 786 | cfg.drv_data = gbpsy; |
Greg Kroah-Hartman | a549be51 | 2015-05-01 20:41:00 +0200 | [diff] [blame] | 787 | |
Rui Miguel Silva | ffe2e24 | 2015-11-12 15:36:02 +0000 | [diff] [blame] | 788 | gbpsy->desc.name = gbpsy->name; |
| 789 | gbpsy->desc.type = gbpsy->type; |
| 790 | gbpsy->desc.properties = gbpsy->props_raw; |
| 791 | gbpsy->desc.num_properties = total_props(gbpsy); |
| 792 | gbpsy->desc.get_property = get_property; |
| 793 | gbpsy->desc.set_property = set_property; |
| 794 | gbpsy->desc.property_is_writeable = property_is_writeable; |
Greg Kroah-Hartman | a549be51 | 2015-05-01 20:41:00 +0200 | [diff] [blame] | 795 | |
Rui Miguel Silva | ffe2e24 | 2015-11-12 15:36:02 +0000 | [diff] [blame] | 796 | gbpsy->psy = power_supply_register(&connection->bundle->dev, |
| 797 | &gbpsy->desc, &cfg); |
Alex Elder | 95073cc | 2016-05-24 13:34:51 -0500 | [diff] [blame] | 798 | return PTR_ERR_OR_ZERO(gbpsy->psy); |
Greg Kroah-Hartman | a549be51 | 2015-05-01 20:41:00 +0200 | [diff] [blame] | 799 | } |
| 800 | #endif |
| 801 | |
Rui Miguel Silva | ffe2e24 | 2015-11-12 15:36:02 +0000 | [diff] [blame] | 802 | static void _gb_power_supply_free(struct gb_power_supply *gbpsy) |
Greg Kroah-Hartman | 33ea3a3 | 2014-09-07 15:39:34 -0700 | [diff] [blame] | 803 | { |
Rui Miguel Silva | ffe2e24 | 2015-11-12 15:36:02 +0000 | [diff] [blame] | 804 | kfree(gbpsy->serial_number); |
| 805 | kfree(gbpsy->model_name); |
| 806 | kfree(gbpsy->manufacturer); |
| 807 | kfree(gbpsy->props_raw); |
| 808 | kfree(gbpsy->props); |
Rui Miguel Silva | ffe2e24 | 2015-11-12 15:36:02 +0000 | [diff] [blame] | 809 | } |
Greg Kroah-Hartman | 33ea3a3 | 2014-09-07 15:39:34 -0700 | [diff] [blame] | 810 | |
Rui Miguel Silva | ffe2e24 | 2015-11-12 15:36:02 +0000 | [diff] [blame] | 811 | static void _gb_power_supply_release(struct gb_power_supply *gbpsy) |
| 812 | { |
Rui Miguel Silva | ffe2e24 | 2015-11-12 15:36:02 +0000 | [diff] [blame] | 813 | gbpsy->update_interval = 0; |
| 814 | |
| 815 | cancel_delayed_work_sync(&gbpsy->work); |
Sandeep Patil | f8811c7 | 2016-03-15 12:28:38 -0700 | [diff] [blame] | 816 | #ifndef CORE_OWNS_PSY_STRUCT |
Rui Miguel Silva | ff85f72 | 2016-01-08 13:53:43 +0000 | [diff] [blame] | 817 | if (gbpsy->registered) |
| 818 | power_supply_unregister(&gbpsy->psy); |
Rui Miguel Silva | ffe2e24 | 2015-11-12 15:36:02 +0000 | [diff] [blame] | 819 | #else |
Rui Miguel Silva | ff85f72 | 2016-01-08 13:53:43 +0000 | [diff] [blame] | 820 | if (gbpsy->registered) |
| 821 | power_supply_unregister(gbpsy->psy); |
Rui Miguel Silva | ffe2e24 | 2015-11-12 15:36:02 +0000 | [diff] [blame] | 822 | #endif |
| 823 | |
| 824 | _gb_power_supply_free(gbpsy); |
| 825 | } |
| 826 | |
| 827 | static void _gb_power_supplies_release(struct gb_power_supplies *supplies) |
| 828 | { |
| 829 | int i; |
| 830 | |
Rui Miguel Silva | 7ccac20d | 2016-01-08 13:53:42 +0000 | [diff] [blame] | 831 | if (!supplies->supply) |
| 832 | return; |
| 833 | |
Rui Miguel Silva | ffe2e24 | 2015-11-12 15:36:02 +0000 | [diff] [blame] | 834 | mutex_lock(&supplies->supplies_lock); |
| 835 | for (i = 0; i < supplies->supplies_count; i++) |
| 836 | _gb_power_supply_release(&supplies->supply[i]); |
Rui Miguel Silva | accad1b | 2016-01-08 13:53:47 +0000 | [diff] [blame] | 837 | kfree(supplies->supply); |
Rui Miguel Silva | ffe2e24 | 2015-11-12 15:36:02 +0000 | [diff] [blame] | 838 | mutex_unlock(&supplies->supplies_lock); |
Rui Miguel Silva | 23f25ba | 2016-01-08 13:53:44 +0000 | [diff] [blame] | 839 | kfree(supplies); |
Rui Miguel Silva | ffe2e24 | 2015-11-12 15:36:02 +0000 | [diff] [blame] | 840 | } |
| 841 | |
| 842 | static int gb_power_supplies_get_count(struct gb_power_supplies *supplies) |
| 843 | { |
| 844 | struct gb_power_supply_get_supplies_response resp; |
| 845 | int ret; |
| 846 | |
| 847 | ret = gb_operation_sync(supplies->connection, |
| 848 | GB_POWER_SUPPLY_TYPE_GET_SUPPLIES, |
| 849 | NULL, 0, &resp, sizeof(resp)); |
| 850 | if (ret < 0) |
| 851 | return ret; |
| 852 | |
| 853 | if (!resp.supplies_count) |
| 854 | return -EINVAL; |
| 855 | |
| 856 | supplies->supplies_count = resp.supplies_count; |
| 857 | |
| 858 | return ret; |
| 859 | } |
| 860 | |
| 861 | static int gb_power_supply_config(struct gb_power_supplies *supplies, int id) |
| 862 | { |
| 863 | struct gb_power_supply *gbpsy = &supplies->supply[id]; |
| 864 | int ret; |
| 865 | |
| 866 | gbpsy->supplies = supplies; |
| 867 | gbpsy->id = id; |
| 868 | |
| 869 | ret = gb_power_supply_description_get(gbpsy); |
| 870 | if (ret < 0) |
Viresh Kumar | 7e9fba8 | 2016-02-12 16:08:32 +0530 | [diff] [blame] | 871 | return ret; |
Rui Miguel Silva | ffe2e24 | 2015-11-12 15:36:02 +0000 | [diff] [blame] | 872 | |
| 873 | ret = gb_power_supply_prop_descriptors_get(gbpsy); |
| 874 | if (ret < 0) |
Viresh Kumar | 7e9fba8 | 2016-02-12 16:08:32 +0530 | [diff] [blame] | 875 | return ret; |
Rui Miguel Silva | ffe2e24 | 2015-11-12 15:36:02 +0000 | [diff] [blame] | 876 | |
| 877 | /* guarantee that we have an unique name, before register */ |
Viresh Kumar | 7e9fba8 | 2016-02-12 16:08:32 +0530 | [diff] [blame] | 878 | return __gb_power_supply_set_name(gbpsy->model_name, gbpsy->name, |
| 879 | sizeof(gbpsy->name)); |
| 880 | } |
| 881 | |
| 882 | static int gb_power_supply_enable(struct gb_power_supply *gbpsy) |
| 883 | { |
| 884 | int ret; |
Rui Miguel Silva | ffe2e24 | 2015-11-12 15:36:02 +0000 | [diff] [blame] | 885 | |
| 886 | ret = gb_power_supply_register(gbpsy); |
| 887 | if (ret < 0) |
Viresh Kumar | 7e9fba8 | 2016-02-12 16:08:32 +0530 | [diff] [blame] | 888 | return ret; |
Rui Miguel Silva | ffe2e24 | 2015-11-12 15:36:02 +0000 | [diff] [blame] | 889 | |
| 890 | gbpsy->update_interval = update_interval_init; |
| 891 | INIT_DELAYED_WORK(&gbpsy->work, gb_power_supply_work); |
| 892 | schedule_delayed_work(&gbpsy->work, 0); |
| 893 | |
Viresh Kumar | 7e9fba8 | 2016-02-12 16:08:32 +0530 | [diff] [blame] | 894 | /* everything went fine, mark it for release code to know */ |
| 895 | gbpsy->registered = true; |
| 896 | |
| 897 | return 0; |
Rui Miguel Silva | ffe2e24 | 2015-11-12 15:36:02 +0000 | [diff] [blame] | 898 | } |
| 899 | |
| 900 | static int gb_power_supplies_setup(struct gb_power_supplies *supplies) |
| 901 | { |
| 902 | struct gb_connection *connection = supplies->connection; |
| 903 | int ret; |
| 904 | int i; |
| 905 | |
| 906 | mutex_lock(&supplies->supplies_lock); |
| 907 | |
| 908 | ret = gb_power_supplies_get_count(supplies); |
| 909 | if (ret < 0) |
| 910 | goto out; |
| 911 | |
| 912 | supplies->supply = kzalloc(supplies->supplies_count * |
| 913 | sizeof(struct gb_power_supply), |
| 914 | GFP_KERNEL); |
| 915 | |
Johan Hovold | e0d91ff | 2016-01-07 12:28:29 +0100 | [diff] [blame] | 916 | if (!supplies->supply) { |
| 917 | ret = -ENOMEM; |
| 918 | goto out; |
| 919 | } |
Greg Kroah-Hartman | 33ea3a3 | 2014-09-07 15:39:34 -0700 | [diff] [blame] | 920 | |
Rui Miguel Silva | ffe2e24 | 2015-11-12 15:36:02 +0000 | [diff] [blame] | 921 | for (i = 0; i < supplies->supplies_count; i++) { |
| 922 | ret = gb_power_supply_config(supplies, i); |
| 923 | if (ret < 0) { |
| 924 | dev_err(&connection->bundle->dev, |
| 925 | "Fail to configure supplies devices\n"); |
| 926 | goto out; |
| 927 | } |
| 928 | } |
| 929 | out: |
| 930 | mutex_unlock(&supplies->supplies_lock); |
| 931 | return ret; |
| 932 | } |
Greg Kroah-Hartman | 2bb7eae | 2014-10-20 15:24:57 +0800 | [diff] [blame] | 933 | |
Viresh Kumar | 7e9fba8 | 2016-02-12 16:08:32 +0530 | [diff] [blame] | 934 | static int gb_power_supplies_register(struct gb_power_supplies *supplies) |
| 935 | { |
| 936 | struct gb_connection *connection = supplies->connection; |
| 937 | int ret = 0; |
| 938 | int i; |
| 939 | |
| 940 | mutex_lock(&supplies->supplies_lock); |
| 941 | |
| 942 | for (i = 0; i < supplies->supplies_count; i++) { |
| 943 | ret = gb_power_supply_enable(&supplies->supply[i]); |
| 944 | if (ret < 0) { |
| 945 | dev_err(&connection->bundle->dev, |
| 946 | "Fail to enable supplies devices\n"); |
| 947 | break; |
| 948 | } |
| 949 | } |
| 950 | |
| 951 | mutex_unlock(&supplies->supplies_lock); |
| 952 | return ret; |
| 953 | } |
| 954 | |
Viresh Kumar | 68b1309 | 2016-02-12 16:08:33 +0530 | [diff] [blame] | 955 | static int gb_supplies_request_handler(struct gb_operation *op) |
Rui Miguel Silva | ffe2e24 | 2015-11-12 15:36:02 +0000 | [diff] [blame] | 956 | { |
| 957 | struct gb_connection *connection = op->connection; |
Greg Kroah-Hartman | 0ec3063 | 2016-03-22 14:30:35 -0400 | [diff] [blame] | 958 | struct gb_power_supplies *supplies = gb_connection_get_data(connection); |
Rui Miguel Silva | ffe2e24 | 2015-11-12 15:36:02 +0000 | [diff] [blame] | 959 | struct gb_power_supply *gbpsy; |
| 960 | struct gb_message *request; |
| 961 | struct gb_power_supply_event_request *payload; |
| 962 | u8 psy_id; |
| 963 | u8 event; |
| 964 | int ret = 0; |
Greg Kroah-Hartman | c0855bf | 2014-10-21 14:31:24 +0800 | [diff] [blame] | 965 | |
Viresh Kumar | 68b1309 | 2016-02-12 16:08:33 +0530 | [diff] [blame] | 966 | if (op->type != GB_POWER_SUPPLY_TYPE_EVENT) { |
Rui Miguel Silva | ffe2e24 | 2015-11-12 15:36:02 +0000 | [diff] [blame] | 967 | dev_err(&connection->bundle->dev, |
Viresh Kumar | 68b1309 | 2016-02-12 16:08:33 +0530 | [diff] [blame] | 968 | "Unsupported unsolicited event: %u\n", op->type); |
Rui Miguel Silva | ffe2e24 | 2015-11-12 15:36:02 +0000 | [diff] [blame] | 969 | return -EINVAL; |
| 970 | } |
| 971 | |
| 972 | request = op->request; |
| 973 | |
| 974 | if (request->payload_size < sizeof(*payload)) { |
| 975 | dev_err(&connection->bundle->dev, |
| 976 | "Wrong event size received (%zu < %zu)\n", |
| 977 | request->payload_size, sizeof(*payload)); |
| 978 | return -EINVAL; |
| 979 | } |
| 980 | |
| 981 | payload = request->payload; |
| 982 | psy_id = payload->psy_id; |
| 983 | mutex_lock(&supplies->supplies_lock); |
Rui Miguel Silva | adb57cf | 2016-01-12 14:38:21 +0000 | [diff] [blame] | 984 | if (psy_id >= supplies->supplies_count || |
| 985 | !supplies->supply[psy_id].registered) { |
Rui Miguel Silva | ffe2e24 | 2015-11-12 15:36:02 +0000 | [diff] [blame] | 986 | dev_err(&connection->bundle->dev, |
| 987 | "Event received for unconfigured power_supply id: %d\n", |
| 988 | psy_id); |
| 989 | ret = -EINVAL; |
| 990 | goto out_unlock; |
| 991 | } |
| 992 | |
| 993 | event = payload->event; |
| 994 | /* |
| 995 | * we will only handle events after setup is done and before release is |
| 996 | * running. For that just check update_interval. |
| 997 | */ |
| 998 | gbpsy = &supplies->supply[psy_id]; |
Rui Miguel Silva | 5f66d62 | 2016-08-16 22:31:56 +0100 | [diff] [blame] | 999 | if (!gbpsy->update_interval) { |
Rui Miguel Silva | ffe2e24 | 2015-11-12 15:36:02 +0000 | [diff] [blame] | 1000 | ret = -ESHUTDOWN; |
| 1001 | goto out_unlock; |
| 1002 | } |
| 1003 | |
Rui Miguel Silva | b5fbe81 | 2016-08-16 22:31:57 +0100 | [diff] [blame^] | 1004 | if (event & GB_POWER_SUPPLY_UPDATE) { |
| 1005 | /* |
| 1006 | * we need to make sure we invalidate cache, if not no new |
| 1007 | * values for the properties will be fetch and the all propose |
| 1008 | * of this event is missed |
| 1009 | */ |
| 1010 | gbpsy->cache_invalid = 1; |
Rui Miguel Silva | ffe2e24 | 2015-11-12 15:36:02 +0000 | [diff] [blame] | 1011 | gb_power_supply_status_update(gbpsy); |
Rui Miguel Silva | b5fbe81 | 2016-08-16 22:31:57 +0100 | [diff] [blame^] | 1012 | } |
Rui Miguel Silva | ffe2e24 | 2015-11-12 15:36:02 +0000 | [diff] [blame] | 1013 | |
| 1014 | out_unlock: |
| 1015 | mutex_unlock(&supplies->supplies_lock); |
| 1016 | return ret; |
| 1017 | } |
| 1018 | |
Viresh Kumar | 68b1309 | 2016-02-12 16:08:33 +0530 | [diff] [blame] | 1019 | static int gb_power_supply_probe(struct gb_bundle *bundle, |
| 1020 | const struct greybus_bundle_id *id) |
Rui Miguel Silva | ffe2e24 | 2015-11-12 15:36:02 +0000 | [diff] [blame] | 1021 | { |
Viresh Kumar | 68b1309 | 2016-02-12 16:08:33 +0530 | [diff] [blame] | 1022 | struct greybus_descriptor_cport *cport_desc; |
| 1023 | struct gb_connection *connection; |
Rui Miguel Silva | ffe2e24 | 2015-11-12 15:36:02 +0000 | [diff] [blame] | 1024 | struct gb_power_supplies *supplies; |
Rui Miguel Silva | d9eafd5 | 2016-01-08 13:53:45 +0000 | [diff] [blame] | 1025 | int ret; |
Rui Miguel Silva | ffe2e24 | 2015-11-12 15:36:02 +0000 | [diff] [blame] | 1026 | |
Viresh Kumar | 68b1309 | 2016-02-12 16:08:33 +0530 | [diff] [blame] | 1027 | if (bundle->num_cports != 1) |
| 1028 | return -ENODEV; |
| 1029 | |
| 1030 | cport_desc = &bundle->cport_desc[0]; |
| 1031 | if (cport_desc->protocol_id != GREYBUS_PROTOCOL_POWER_SUPPLY) |
| 1032 | return -ENODEV; |
| 1033 | |
Rui Miguel Silva | ffe2e24 | 2015-11-12 15:36:02 +0000 | [diff] [blame] | 1034 | supplies = kzalloc(sizeof(*supplies), GFP_KERNEL); |
| 1035 | if (!supplies) |
| 1036 | return -ENOMEM; |
| 1037 | |
Viresh Kumar | 68b1309 | 2016-02-12 16:08:33 +0530 | [diff] [blame] | 1038 | connection = gb_connection_create(bundle, le16_to_cpu(cport_desc->id), |
| 1039 | gb_supplies_request_handler); |
| 1040 | if (IS_ERR(connection)) { |
| 1041 | ret = PTR_ERR(connection); |
| 1042 | goto out; |
| 1043 | } |
| 1044 | |
Rui Miguel Silva | ffe2e24 | 2015-11-12 15:36:02 +0000 | [diff] [blame] | 1045 | supplies->connection = connection; |
Greg Kroah-Hartman | 0ec3063 | 2016-03-22 14:30:35 -0400 | [diff] [blame] | 1046 | gb_connection_set_data(connection, supplies); |
Rui Miguel Silva | ffe2e24 | 2015-11-12 15:36:02 +0000 | [diff] [blame] | 1047 | |
| 1048 | mutex_init(&supplies->supplies_lock); |
| 1049 | |
Viresh Kumar | 68b1309 | 2016-02-12 16:08:33 +0530 | [diff] [blame] | 1050 | greybus_set_drvdata(bundle, supplies); |
| 1051 | |
| 1052 | /* We aren't ready to receive an incoming request yet */ |
| 1053 | ret = gb_connection_enable_tx(connection); |
| 1054 | if (ret) |
| 1055 | goto error_connection_destroy; |
| 1056 | |
Rui Miguel Silva | d9eafd5 | 2016-01-08 13:53:45 +0000 | [diff] [blame] | 1057 | ret = gb_power_supplies_setup(supplies); |
| 1058 | if (ret < 0) |
Viresh Kumar | 68b1309 | 2016-02-12 16:08:33 +0530 | [diff] [blame] | 1059 | goto error_connection_disable; |
| 1060 | |
| 1061 | /* We are ready to receive an incoming request now, enable RX as well */ |
| 1062 | ret = gb_connection_enable(connection); |
| 1063 | if (ret) |
| 1064 | goto error_connection_disable; |
Rui Miguel Silva | d9eafd5 | 2016-01-08 13:53:45 +0000 | [diff] [blame] | 1065 | |
Viresh Kumar | 7e9fba8 | 2016-02-12 16:08:32 +0530 | [diff] [blame] | 1066 | ret = gb_power_supplies_register(supplies); |
| 1067 | if (ret < 0) |
Viresh Kumar | 68b1309 | 2016-02-12 16:08:33 +0530 | [diff] [blame] | 1068 | goto error_connection_disable; |
Viresh Kumar | 7e9fba8 | 2016-02-12 16:08:32 +0530 | [diff] [blame] | 1069 | |
| 1070 | return 0; |
| 1071 | |
Viresh Kumar | 68b1309 | 2016-02-12 16:08:33 +0530 | [diff] [blame] | 1072 | error_connection_disable: |
| 1073 | gb_connection_disable(connection); |
| 1074 | error_connection_destroy: |
| 1075 | gb_connection_destroy(connection); |
Viresh Kumar | 7e9fba8 | 2016-02-12 16:08:32 +0530 | [diff] [blame] | 1076 | out: |
| 1077 | _gb_power_supplies_release(supplies); |
Rui Miguel Silva | d9eafd5 | 2016-01-08 13:53:45 +0000 | [diff] [blame] | 1078 | return ret; |
Greg Kroah-Hartman | 33ea3a3 | 2014-09-07 15:39:34 -0700 | [diff] [blame] | 1079 | } |
| 1080 | |
Viresh Kumar | 68b1309 | 2016-02-12 16:08:33 +0530 | [diff] [blame] | 1081 | static void gb_power_supply_disconnect(struct gb_bundle *bundle) |
Alex Elder | 697e55d | 2014-10-20 23:01:04 -0500 | [diff] [blame] | 1082 | { |
Viresh Kumar | 68b1309 | 2016-02-12 16:08:33 +0530 | [diff] [blame] | 1083 | struct gb_power_supplies *supplies = greybus_get_drvdata(bundle); |
| 1084 | |
| 1085 | gb_connection_disable(supplies->connection); |
| 1086 | gb_connection_destroy(supplies->connection); |
Alex Elder | 697e55d | 2014-10-20 23:01:04 -0500 | [diff] [blame] | 1087 | |
Rui Miguel Silva | ffe2e24 | 2015-11-12 15:36:02 +0000 | [diff] [blame] | 1088 | _gb_power_supplies_release(supplies); |
Alex Elder | 697e55d | 2014-10-20 23:01:04 -0500 | [diff] [blame] | 1089 | } |
| 1090 | |
Viresh Kumar | 68b1309 | 2016-02-12 16:08:33 +0530 | [diff] [blame] | 1091 | static const struct greybus_bundle_id gb_power_supply_id_table[] = { |
| 1092 | { GREYBUS_DEVICE_CLASS(GREYBUS_CLASS_POWER_SUPPLY) }, |
| 1093 | { } |
Alex Elder | 19d03de | 2014-11-05 16:12:53 -0600 | [diff] [blame] | 1094 | }; |
Viresh Kumar | 68b1309 | 2016-02-12 16:08:33 +0530 | [diff] [blame] | 1095 | MODULE_DEVICE_TABLE(greybus, gb_power_supply_id_table); |
Alex Elder | 19d03de | 2014-11-05 16:12:53 -0600 | [diff] [blame] | 1096 | |
Viresh Kumar | 68b1309 | 2016-02-12 16:08:33 +0530 | [diff] [blame] | 1097 | static struct greybus_driver gb_power_supply_driver = { |
| 1098 | .name = "power_supply", |
| 1099 | .probe = gb_power_supply_probe, |
| 1100 | .disconnect = gb_power_supply_disconnect, |
| 1101 | .id_table = gb_power_supply_id_table, |
| 1102 | }; |
| 1103 | module_greybus_driver(gb_power_supply_driver); |
Alex Elder | 19d03de | 2014-11-05 16:12:53 -0600 | [diff] [blame] | 1104 | |
Greg Kroah-Hartman | 7dd2626 | 2014-12-24 13:01:42 -0800 | [diff] [blame] | 1105 | MODULE_LICENSE("GPL v2"); |