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; |
Rui Miguel Silva | ffe2e24 | 2015-11-12 15:36:02 +0000 | [diff] [blame] | 30 | struct power_supply *psy; |
| 31 | struct power_supply_desc desc; |
Rui Miguel Silva | ffe2e24 | 2015-11-12 15:36:02 +0000 | [diff] [blame] | 32 | char name[64]; |
| 33 | struct gb_power_supplies *supplies; |
| 34 | struct delayed_work work; |
| 35 | char *manufacturer; |
| 36 | char *model_name; |
| 37 | char *serial_number; |
| 38 | u8 type; |
| 39 | u8 properties_count; |
| 40 | u8 properties_count_str; |
| 41 | unsigned long last_update; |
Rui Miguel Silva | b5fbe81 | 2016-08-16 22:31:57 +0100 | [diff] [blame] | 42 | u8 cache_invalid; |
Rui Miguel Silva | ffe2e24 | 2015-11-12 15:36:02 +0000 | [diff] [blame] | 43 | unsigned int update_interval; |
| 44 | bool changed; |
| 45 | struct gb_power_supply_prop *props; |
| 46 | enum power_supply_property *props_raw; |
Philip Yang | 4e013b6 | 2016-08-31 11:11:18 +0800 | [diff] [blame] | 47 | bool pm_acquired; |
| 48 | struct mutex supply_lock; |
Rui Miguel Silva | ffe2e24 | 2015-11-12 15:36:02 +0000 | [diff] [blame] | 49 | }; |
Greg Kroah-Hartman | c0855bf | 2014-10-21 14:31:24 +0800 | [diff] [blame] | 50 | |
Rui Miguel Silva | ffe2e24 | 2015-11-12 15:36:02 +0000 | [diff] [blame] | 51 | struct gb_power_supplies { |
| 52 | struct gb_connection *connection; |
| 53 | u8 supplies_count; |
| 54 | struct gb_power_supply *supply; |
| 55 | struct mutex supplies_lock; |
| 56 | }; |
| 57 | |
Rui Miguel Silva | 722a133 | 2016-09-08 17:17:50 +0100 | [diff] [blame] | 58 | #define to_gb_power_supply(x) power_supply_get_drvdata(x) |
| 59 | |
| 60 | /* |
| 61 | * General power supply properties that could be absent from various reasons, |
| 62 | * like kernel versions or vendor specific versions |
| 63 | */ |
| 64 | #ifndef POWER_SUPPLY_PROP_VOLTAGE_BOOT |
| 65 | #define POWER_SUPPLY_PROP_VOLTAGE_BOOT -1 |
| 66 | #endif |
| 67 | #ifndef POWER_SUPPLY_PROP_CURRENT_BOOT |
| 68 | #define POWER_SUPPLY_PROP_CURRENT_BOOT -1 |
| 69 | #endif |
| 70 | #ifndef POWER_SUPPLY_PROP_CALIBRATE |
| 71 | #define POWER_SUPPLY_PROP_CALIBRATE -1 |
| 72 | #endif |
| 73 | |
Rui Miguel Silva | ffe2e24 | 2015-11-12 15:36:02 +0000 | [diff] [blame] | 74 | /* cache time in milliseconds, if cache_time is set to 0 cache is disable */ |
| 75 | static unsigned int cache_time = 1000; |
| 76 | /* |
| 77 | * update interval initial and maximum value, between the two will |
| 78 | * back-off exponential |
| 79 | */ |
| 80 | static unsigned int update_interval_init = 1 * HZ; |
| 81 | static unsigned int update_interval_max = 30 * HZ; |
| 82 | |
| 83 | struct gb_power_supply_changes { |
| 84 | enum power_supply_property prop; |
| 85 | u32 tolerance_change; |
Rui Miguel Silva | c4582f9 | 2016-08-16 22:31:55 +0100 | [diff] [blame] | 86 | void (*prop_changed)(struct gb_power_supply *gbpsy, |
| 87 | struct gb_power_supply_prop *prop); |
Rui Miguel Silva | ffe2e24 | 2015-11-12 15:36:02 +0000 | [diff] [blame] | 88 | }; |
| 89 | |
Philip Yang | 4e013b6 | 2016-08-31 11:11:18 +0800 | [diff] [blame] | 90 | static void gb_power_supply_state_change(struct gb_power_supply *gbpsy, |
| 91 | struct gb_power_supply_prop *prop); |
| 92 | |
Rui Miguel Silva | ffe2e24 | 2015-11-12 15:36:02 +0000 | [diff] [blame] | 93 | static const struct gb_power_supply_changes psy_props_changes[] = { |
Rui Miguel Silva | c4582f9 | 2016-08-16 22:31:55 +0100 | [diff] [blame] | 94 | { .prop = GB_POWER_SUPPLY_PROP_STATUS, |
| 95 | .tolerance_change = 0, |
Philip Yang | 4e013b6 | 2016-08-31 11:11:18 +0800 | [diff] [blame] | 96 | .prop_changed = gb_power_supply_state_change, |
Rui Miguel Silva | ffe2e24 | 2015-11-12 15:36:02 +0000 | [diff] [blame] | 97 | }, |
Rui Miguel Silva | c4582f9 | 2016-08-16 22:31:55 +0100 | [diff] [blame] | 98 | { .prop = GB_POWER_SUPPLY_PROP_TEMP, |
| 99 | .tolerance_change = 500, |
| 100 | .prop_changed = NULL, |
Rui Miguel Silva | ffe2e24 | 2015-11-12 15:36:02 +0000 | [diff] [blame] | 101 | }, |
Rui Miguel Silva | c4582f9 | 2016-08-16 22:31:55 +0100 | [diff] [blame] | 102 | { .prop = GB_POWER_SUPPLY_PROP_ONLINE, |
| 103 | .tolerance_change = 0, |
| 104 | .prop_changed = NULL, |
Rui Miguel Silva | ffe2e24 | 2015-11-12 15:36:02 +0000 | [diff] [blame] | 105 | }, |
| 106 | }; |
| 107 | |
Rui Miguel Silva | 47becc5 | 2016-07-13 14:11:20 +0100 | [diff] [blame] | 108 | static int get_psp_from_gb_prop(int gb_prop, enum power_supply_property *psp) |
| 109 | { |
| 110 | int prop; |
| 111 | |
| 112 | switch (gb_prop) { |
| 113 | case GB_POWER_SUPPLY_PROP_STATUS: |
| 114 | prop = POWER_SUPPLY_PROP_STATUS; |
| 115 | break; |
| 116 | case GB_POWER_SUPPLY_PROP_CHARGE_TYPE: |
| 117 | prop = POWER_SUPPLY_PROP_CHARGE_TYPE; |
| 118 | break; |
| 119 | case GB_POWER_SUPPLY_PROP_HEALTH: |
| 120 | prop = POWER_SUPPLY_PROP_HEALTH; |
| 121 | break; |
| 122 | case GB_POWER_SUPPLY_PROP_PRESENT: |
| 123 | prop = POWER_SUPPLY_PROP_PRESENT; |
| 124 | break; |
| 125 | case GB_POWER_SUPPLY_PROP_ONLINE: |
| 126 | prop = POWER_SUPPLY_PROP_ONLINE; |
| 127 | break; |
| 128 | case GB_POWER_SUPPLY_PROP_AUTHENTIC: |
| 129 | prop = POWER_SUPPLY_PROP_AUTHENTIC; |
| 130 | break; |
| 131 | case GB_POWER_SUPPLY_PROP_TECHNOLOGY: |
| 132 | prop = POWER_SUPPLY_PROP_TECHNOLOGY; |
| 133 | break; |
| 134 | case GB_POWER_SUPPLY_PROP_CYCLE_COUNT: |
| 135 | prop = POWER_SUPPLY_PROP_CYCLE_COUNT; |
| 136 | break; |
| 137 | case GB_POWER_SUPPLY_PROP_VOLTAGE_MAX: |
| 138 | prop = POWER_SUPPLY_PROP_VOLTAGE_MAX; |
| 139 | break; |
| 140 | case GB_POWER_SUPPLY_PROP_VOLTAGE_MIN: |
| 141 | prop = POWER_SUPPLY_PROP_VOLTAGE_MIN; |
| 142 | break; |
| 143 | case GB_POWER_SUPPLY_PROP_VOLTAGE_MAX_DESIGN: |
| 144 | prop = POWER_SUPPLY_PROP_VOLTAGE_MAX_DESIGN; |
| 145 | break; |
| 146 | case GB_POWER_SUPPLY_PROP_VOLTAGE_MIN_DESIGN: |
| 147 | prop = POWER_SUPPLY_PROP_VOLTAGE_MIN_DESIGN; |
| 148 | break; |
| 149 | case GB_POWER_SUPPLY_PROP_VOLTAGE_NOW: |
| 150 | prop = POWER_SUPPLY_PROP_VOLTAGE_NOW; |
| 151 | break; |
| 152 | case GB_POWER_SUPPLY_PROP_VOLTAGE_AVG: |
| 153 | prop = POWER_SUPPLY_PROP_VOLTAGE_AVG; |
| 154 | break; |
| 155 | case GB_POWER_SUPPLY_PROP_VOLTAGE_OCV: |
| 156 | prop = POWER_SUPPLY_PROP_VOLTAGE_OCV; |
| 157 | break; |
| 158 | case GB_POWER_SUPPLY_PROP_VOLTAGE_BOOT: |
| 159 | prop = POWER_SUPPLY_PROP_VOLTAGE_BOOT; |
| 160 | break; |
| 161 | case GB_POWER_SUPPLY_PROP_CURRENT_MAX: |
| 162 | prop = POWER_SUPPLY_PROP_CURRENT_MAX; |
| 163 | break; |
| 164 | case GB_POWER_SUPPLY_PROP_CURRENT_NOW: |
| 165 | prop = POWER_SUPPLY_PROP_CURRENT_NOW; |
| 166 | break; |
| 167 | case GB_POWER_SUPPLY_PROP_CURRENT_AVG: |
| 168 | prop = POWER_SUPPLY_PROP_CURRENT_AVG; |
| 169 | break; |
| 170 | case GB_POWER_SUPPLY_PROP_CURRENT_BOOT: |
| 171 | prop = POWER_SUPPLY_PROP_CURRENT_BOOT; |
| 172 | break; |
| 173 | case GB_POWER_SUPPLY_PROP_POWER_NOW: |
| 174 | prop = POWER_SUPPLY_PROP_POWER_NOW; |
| 175 | break; |
| 176 | case GB_POWER_SUPPLY_PROP_POWER_AVG: |
| 177 | prop = POWER_SUPPLY_PROP_POWER_AVG; |
| 178 | break; |
| 179 | case GB_POWER_SUPPLY_PROP_CHARGE_FULL_DESIGN: |
| 180 | prop = POWER_SUPPLY_PROP_CHARGE_FULL_DESIGN; |
| 181 | break; |
| 182 | case GB_POWER_SUPPLY_PROP_CHARGE_EMPTY_DESIGN: |
| 183 | prop = POWER_SUPPLY_PROP_CHARGE_EMPTY_DESIGN; |
| 184 | break; |
| 185 | case GB_POWER_SUPPLY_PROP_CHARGE_FULL: |
| 186 | prop = POWER_SUPPLY_PROP_CHARGE_FULL; |
| 187 | break; |
| 188 | case GB_POWER_SUPPLY_PROP_CHARGE_EMPTY: |
| 189 | prop = POWER_SUPPLY_PROP_CHARGE_EMPTY; |
| 190 | break; |
| 191 | case GB_POWER_SUPPLY_PROP_CHARGE_NOW: |
| 192 | prop = POWER_SUPPLY_PROP_CHARGE_NOW; |
| 193 | break; |
| 194 | case GB_POWER_SUPPLY_PROP_CHARGE_AVG: |
| 195 | prop = POWER_SUPPLY_PROP_CHARGE_AVG; |
| 196 | break; |
| 197 | case GB_POWER_SUPPLY_PROP_CHARGE_COUNTER: |
| 198 | prop = POWER_SUPPLY_PROP_CHARGE_COUNTER; |
| 199 | break; |
| 200 | case GB_POWER_SUPPLY_PROP_CONSTANT_CHARGE_CURRENT: |
| 201 | prop = POWER_SUPPLY_PROP_CONSTANT_CHARGE_CURRENT; |
| 202 | break; |
| 203 | case GB_POWER_SUPPLY_PROP_CONSTANT_CHARGE_CURRENT_MAX: |
| 204 | prop = POWER_SUPPLY_PROP_CONSTANT_CHARGE_CURRENT_MAX; |
| 205 | break; |
| 206 | case GB_POWER_SUPPLY_PROP_CONSTANT_CHARGE_VOLTAGE: |
| 207 | prop = POWER_SUPPLY_PROP_CONSTANT_CHARGE_VOLTAGE; |
| 208 | break; |
| 209 | case GB_POWER_SUPPLY_PROP_CONSTANT_CHARGE_VOLTAGE_MAX: |
| 210 | prop = POWER_SUPPLY_PROP_CONSTANT_CHARGE_VOLTAGE_MAX; |
| 211 | break; |
| 212 | case GB_POWER_SUPPLY_PROP_CHARGE_CONTROL_LIMIT: |
| 213 | prop = POWER_SUPPLY_PROP_CHARGE_CONTROL_LIMIT; |
| 214 | break; |
| 215 | case GB_POWER_SUPPLY_PROP_CHARGE_CONTROL_LIMIT_MAX: |
| 216 | prop = POWER_SUPPLY_PROP_CHARGE_CONTROL_LIMIT_MAX; |
| 217 | break; |
| 218 | case GB_POWER_SUPPLY_PROP_INPUT_CURRENT_LIMIT: |
| 219 | prop = POWER_SUPPLY_PROP_INPUT_CURRENT_LIMIT; |
| 220 | break; |
| 221 | case GB_POWER_SUPPLY_PROP_ENERGY_FULL_DESIGN: |
| 222 | prop = POWER_SUPPLY_PROP_ENERGY_FULL_DESIGN; |
| 223 | break; |
| 224 | case GB_POWER_SUPPLY_PROP_ENERGY_EMPTY_DESIGN: |
| 225 | prop = POWER_SUPPLY_PROP_ENERGY_EMPTY_DESIGN; |
| 226 | break; |
| 227 | case GB_POWER_SUPPLY_PROP_ENERGY_FULL: |
| 228 | prop = POWER_SUPPLY_PROP_ENERGY_FULL; |
| 229 | break; |
| 230 | case GB_POWER_SUPPLY_PROP_ENERGY_EMPTY: |
| 231 | prop = POWER_SUPPLY_PROP_ENERGY_EMPTY; |
| 232 | break; |
| 233 | case GB_POWER_SUPPLY_PROP_ENERGY_NOW: |
| 234 | prop = POWER_SUPPLY_PROP_ENERGY_NOW; |
| 235 | break; |
| 236 | case GB_POWER_SUPPLY_PROP_ENERGY_AVG: |
| 237 | prop = POWER_SUPPLY_PROP_ENERGY_AVG; |
| 238 | break; |
| 239 | case GB_POWER_SUPPLY_PROP_CAPACITY: |
| 240 | prop = POWER_SUPPLY_PROP_CAPACITY; |
| 241 | break; |
| 242 | case GB_POWER_SUPPLY_PROP_CAPACITY_ALERT_MIN: |
| 243 | prop = POWER_SUPPLY_PROP_CAPACITY_ALERT_MIN; |
| 244 | break; |
| 245 | case GB_POWER_SUPPLY_PROP_CAPACITY_ALERT_MAX: |
| 246 | prop = POWER_SUPPLY_PROP_CAPACITY_ALERT_MAX; |
| 247 | break; |
| 248 | case GB_POWER_SUPPLY_PROP_CAPACITY_LEVEL: |
| 249 | prop = POWER_SUPPLY_PROP_CAPACITY_LEVEL; |
| 250 | break; |
| 251 | case GB_POWER_SUPPLY_PROP_TEMP: |
| 252 | prop = POWER_SUPPLY_PROP_TEMP; |
| 253 | break; |
| 254 | case GB_POWER_SUPPLY_PROP_TEMP_MAX: |
| 255 | prop = POWER_SUPPLY_PROP_TEMP_MAX; |
| 256 | break; |
| 257 | case GB_POWER_SUPPLY_PROP_TEMP_MIN: |
| 258 | prop = POWER_SUPPLY_PROP_TEMP_MIN; |
| 259 | break; |
| 260 | case GB_POWER_SUPPLY_PROP_TEMP_ALERT_MIN: |
| 261 | prop = POWER_SUPPLY_PROP_TEMP_ALERT_MIN; |
| 262 | break; |
| 263 | case GB_POWER_SUPPLY_PROP_TEMP_ALERT_MAX: |
| 264 | prop = POWER_SUPPLY_PROP_TEMP_ALERT_MAX; |
| 265 | break; |
| 266 | case GB_POWER_SUPPLY_PROP_TEMP_AMBIENT: |
| 267 | prop = POWER_SUPPLY_PROP_TEMP_AMBIENT; |
| 268 | break; |
| 269 | case GB_POWER_SUPPLY_PROP_TEMP_AMBIENT_ALERT_MIN: |
| 270 | prop = POWER_SUPPLY_PROP_TEMP_AMBIENT_ALERT_MIN; |
| 271 | break; |
| 272 | case GB_POWER_SUPPLY_PROP_TEMP_AMBIENT_ALERT_MAX: |
| 273 | prop = POWER_SUPPLY_PROP_TEMP_AMBIENT_ALERT_MAX; |
| 274 | break; |
| 275 | case GB_POWER_SUPPLY_PROP_TIME_TO_EMPTY_NOW: |
| 276 | prop = POWER_SUPPLY_PROP_TIME_TO_EMPTY_NOW; |
| 277 | break; |
| 278 | case GB_POWER_SUPPLY_PROP_TIME_TO_EMPTY_AVG: |
| 279 | prop = POWER_SUPPLY_PROP_TIME_TO_EMPTY_AVG; |
| 280 | break; |
| 281 | case GB_POWER_SUPPLY_PROP_TIME_TO_FULL_NOW: |
| 282 | prop = POWER_SUPPLY_PROP_TIME_TO_FULL_NOW; |
| 283 | break; |
| 284 | case GB_POWER_SUPPLY_PROP_TIME_TO_FULL_AVG: |
| 285 | prop = POWER_SUPPLY_PROP_TIME_TO_FULL_AVG; |
| 286 | break; |
| 287 | case GB_POWER_SUPPLY_PROP_TYPE: |
| 288 | prop = POWER_SUPPLY_PROP_TYPE; |
| 289 | break; |
| 290 | case GB_POWER_SUPPLY_PROP_SCOPE: |
| 291 | prop = POWER_SUPPLY_PROP_SCOPE; |
| 292 | break; |
| 293 | case GB_POWER_SUPPLY_PROP_CHARGE_TERM_CURRENT: |
| 294 | prop = POWER_SUPPLY_PROP_CHARGE_TERM_CURRENT; |
| 295 | break; |
| 296 | case GB_POWER_SUPPLY_PROP_CALIBRATE: |
| 297 | prop = POWER_SUPPLY_PROP_CALIBRATE; |
| 298 | break; |
| 299 | default: |
| 300 | prop = -1; |
| 301 | break; |
| 302 | } |
| 303 | |
| 304 | if (prop < 0) |
| 305 | return prop; |
| 306 | |
| 307 | *psp = (enum power_supply_property)prop; |
| 308 | |
| 309 | return 0; |
| 310 | } |
| 311 | |
Rui Miguel Silva | ffe2e24 | 2015-11-12 15:36:02 +0000 | [diff] [blame] | 312 | static struct gb_connection *get_conn_from_psy(struct gb_power_supply *gbpsy) |
| 313 | { |
| 314 | return gbpsy->supplies->connection; |
| 315 | } |
| 316 | |
| 317 | static struct gb_power_supply_prop *get_psy_prop(struct gb_power_supply *gbpsy, |
| 318 | enum power_supply_property psp) |
| 319 | { |
| 320 | int i; |
| 321 | |
| 322 | for (i = 0; i < gbpsy->properties_count; i++) |
| 323 | if (gbpsy->props[i].prop == psp) |
| 324 | return &gbpsy->props[i]; |
| 325 | return NULL; |
| 326 | } |
| 327 | |
| 328 | static int is_psy_prop_writeable(struct gb_power_supply *gbpsy, |
| 329 | enum power_supply_property psp) |
| 330 | { |
| 331 | struct gb_power_supply_prop *prop; |
| 332 | |
| 333 | prop = get_psy_prop(gbpsy, psp); |
| 334 | if (!prop) |
| 335 | return -ENOENT; |
| 336 | return prop->is_writeable ? 1 : 0; |
| 337 | } |
| 338 | |
| 339 | static int is_prop_valint(enum power_supply_property psp) |
| 340 | { |
| 341 | return ((psp < POWER_SUPPLY_PROP_MODEL_NAME) ? 1 : 0); |
| 342 | } |
| 343 | |
| 344 | static void next_interval(struct gb_power_supply *gbpsy) |
| 345 | { |
| 346 | if (gbpsy->update_interval == update_interval_max) |
| 347 | return; |
| 348 | |
| 349 | /* do some exponential back-off in the update interval */ |
| 350 | gbpsy->update_interval *= 2; |
| 351 | if (gbpsy->update_interval > update_interval_max) |
| 352 | gbpsy->update_interval = update_interval_max; |
| 353 | } |
| 354 | |
Rui Miguel Silva | ffe2e24 | 2015-11-12 15:36:02 +0000 | [diff] [blame] | 355 | static void __gb_power_supply_changed(struct gb_power_supply *gbpsy) |
| 356 | { |
| 357 | power_supply_changed(gbpsy->psy); |
| 358 | } |
Rui Miguel Silva | ffe2e24 | 2015-11-12 15:36:02 +0000 | [diff] [blame] | 359 | |
Philip Yang | 4e013b6 | 2016-08-31 11:11:18 +0800 | [diff] [blame] | 360 | static void gb_power_supply_state_change(struct gb_power_supply *gbpsy, |
| 361 | struct gb_power_supply_prop *prop) |
| 362 | { |
| 363 | struct gb_connection *connection = get_conn_from_psy(gbpsy); |
| 364 | int ret; |
| 365 | |
| 366 | /* |
| 367 | * Check gbpsy->pm_acquired to make sure only one pair of 'get_sync' |
| 368 | * and 'put_autosuspend' runtime pm call for state property change. |
| 369 | */ |
| 370 | mutex_lock(&gbpsy->supply_lock); |
| 371 | |
| 372 | if ((prop->val == GB_POWER_SUPPLY_STATUS_CHARGING) && |
| 373 | !gbpsy->pm_acquired) { |
| 374 | ret = gb_pm_runtime_get_sync(connection->bundle); |
| 375 | if (ret) |
| 376 | dev_err(&connection->bundle->dev, |
| 377 | "Fail to set wake lock for charging state\n"); |
| 378 | else |
| 379 | gbpsy->pm_acquired = true; |
| 380 | } else { |
| 381 | if (gbpsy->pm_acquired) { |
| 382 | ret = gb_pm_runtime_put_autosuspend(connection->bundle); |
| 383 | if (ret) |
| 384 | dev_err(&connection->bundle->dev, |
| 385 | "Fail to set wake unlock for none charging\n"); |
| 386 | else |
| 387 | gbpsy->pm_acquired = false; |
| 388 | } |
| 389 | } |
| 390 | |
| 391 | mutex_unlock(&gbpsy->supply_lock); |
| 392 | } |
| 393 | |
Rui Miguel Silva | ffe2e24 | 2015-11-12 15:36:02 +0000 | [diff] [blame] | 394 | static void check_changed(struct gb_power_supply *gbpsy, |
| 395 | struct gb_power_supply_prop *prop) |
| 396 | { |
| 397 | const struct gb_power_supply_changes *psyc; |
Rui Miguel Silva | 6e720c2 | 2016-07-13 14:11:19 +0100 | [diff] [blame] | 398 | int val = prop->val; |
| 399 | int prev_val = prop->previous_val; |
Rui Miguel Silva | c4582f9 | 2016-08-16 22:31:55 +0100 | [diff] [blame] | 400 | bool changed = false; |
Rui Miguel Silva | ffe2e24 | 2015-11-12 15:36:02 +0000 | [diff] [blame] | 401 | int i; |
| 402 | |
| 403 | for (i = 0; i < ARRAY_SIZE(psy_props_changes); i++) { |
| 404 | psyc = &psy_props_changes[i]; |
| 405 | if (prop->prop == psyc->prop) { |
| 406 | if (!psyc->tolerance_change) |
Rui Miguel Silva | c4582f9 | 2016-08-16 22:31:55 +0100 | [diff] [blame] | 407 | changed = true; |
Rui Miguel Silva | ffe2e24 | 2015-11-12 15:36:02 +0000 | [diff] [blame] | 408 | else if (val < prev_val && |
| 409 | prev_val - val > psyc->tolerance_change) |
Rui Miguel Silva | c4582f9 | 2016-08-16 22:31:55 +0100 | [diff] [blame] | 410 | changed = true; |
Rui Miguel Silva | ffe2e24 | 2015-11-12 15:36:02 +0000 | [diff] [blame] | 411 | else if (val > prev_val && |
| 412 | val - prev_val > psyc->tolerance_change) |
Rui Miguel Silva | c4582f9 | 2016-08-16 22:31:55 +0100 | [diff] [blame] | 413 | changed = true; |
| 414 | |
| 415 | if (changed && psyc->prop_changed) |
| 416 | psyc->prop_changed(gbpsy, prop); |
| 417 | |
| 418 | if (changed) |
Rui Miguel Silva | ffe2e24 | 2015-11-12 15:36:02 +0000 | [diff] [blame] | 419 | gbpsy->changed = true; |
| 420 | break; |
| 421 | } |
| 422 | } |
| 423 | } |
| 424 | |
| 425 | static int total_props(struct gb_power_supply *gbpsy) |
| 426 | { |
| 427 | /* this return the intval plus the strval properties */ |
| 428 | return (gbpsy->properties_count + gbpsy->properties_count_str); |
| 429 | } |
| 430 | |
| 431 | static void prop_append(struct gb_power_supply *gbpsy, |
| 432 | enum power_supply_property prop) |
| 433 | { |
| 434 | enum power_supply_property *new_props_raw; |
| 435 | |
| 436 | gbpsy->properties_count_str++; |
| 437 | new_props_raw = krealloc(gbpsy->props_raw, total_props(gbpsy) * |
| 438 | sizeof(enum power_supply_property), |
| 439 | GFP_KERNEL); |
| 440 | if (!new_props_raw) |
| 441 | return; |
| 442 | gbpsy->props_raw = new_props_raw; |
| 443 | gbpsy->props_raw[total_props(gbpsy) - 1] = prop; |
| 444 | } |
| 445 | |
| 446 | static int __gb_power_supply_set_name(char *init_name, char *name, size_t len) |
| 447 | { |
| 448 | unsigned int i = 0; |
| 449 | int ret = 0; |
| 450 | struct power_supply *psy; |
| 451 | |
| 452 | if (!strlen(init_name)) |
| 453 | init_name = "gb_power_supply"; |
| 454 | strlcpy(name, init_name, len); |
| 455 | |
| 456 | while ((ret < len) && (psy = power_supply_get_by_name(name))) { |
Rui Miguel Silva | ffe2e24 | 2015-11-12 15:36:02 +0000 | [diff] [blame] | 457 | power_supply_put(psy); |
Rui Miguel Silva | 722a133 | 2016-09-08 17:17:50 +0100 | [diff] [blame] | 458 | |
Rui Miguel Silva | ffe2e24 | 2015-11-12 15:36:02 +0000 | [diff] [blame] | 459 | ret = snprintf(name, len, "%s_%u", init_name, ++i); |
| 460 | } |
| 461 | if (ret >= len) |
| 462 | return -ENOMEM; |
| 463 | return i; |
| 464 | } |
| 465 | |
| 466 | static void _gb_power_supply_append_props(struct gb_power_supply *gbpsy) |
| 467 | { |
| 468 | if (strlen(gbpsy->manufacturer)) |
| 469 | prop_append(gbpsy, POWER_SUPPLY_PROP_MANUFACTURER); |
| 470 | if (strlen(gbpsy->model_name)) |
| 471 | prop_append(gbpsy, POWER_SUPPLY_PROP_MODEL_NAME); |
| 472 | if (strlen(gbpsy->serial_number)) |
| 473 | prop_append(gbpsy, POWER_SUPPLY_PROP_SERIAL_NUMBER); |
| 474 | } |
| 475 | |
| 476 | static int gb_power_supply_description_get(struct gb_power_supply *gbpsy) |
| 477 | { |
| 478 | struct gb_connection *connection = get_conn_from_psy(gbpsy); |
| 479 | struct gb_power_supply_get_description_request req; |
| 480 | struct gb_power_supply_get_description_response resp; |
| 481 | int ret; |
| 482 | |
| 483 | req.psy_id = gbpsy->id; |
| 484 | |
| 485 | ret = gb_operation_sync(connection, |
| 486 | GB_POWER_SUPPLY_TYPE_GET_DESCRIPTION, |
| 487 | &req, sizeof(req), &resp, sizeof(resp)); |
| 488 | if (ret < 0) |
| 489 | return ret; |
| 490 | |
| 491 | gbpsy->manufacturer = kstrndup(resp.manufacturer, PROP_MAX, GFP_KERNEL); |
| 492 | if (!gbpsy->manufacturer) |
| 493 | return -ENOMEM; |
| 494 | gbpsy->model_name = kstrndup(resp.model, PROP_MAX, GFP_KERNEL); |
| 495 | if (!gbpsy->model_name) |
| 496 | return -ENOMEM; |
| 497 | gbpsy->serial_number = kstrndup(resp.serial_number, PROP_MAX, |
| 498 | GFP_KERNEL); |
| 499 | if (!gbpsy->serial_number) |
| 500 | return -ENOMEM; |
| 501 | |
| 502 | gbpsy->type = le16_to_cpu(resp.type); |
| 503 | gbpsy->properties_count = resp.properties_count; |
| 504 | |
| 505 | return 0; |
| 506 | } |
| 507 | |
| 508 | static int gb_power_supply_prop_descriptors_get(struct gb_power_supply *gbpsy) |
| 509 | { |
| 510 | struct gb_connection *connection = get_conn_from_psy(gbpsy); |
Rui Miguel Silva | 9d15134 | 2016-02-04 14:00:36 +0000 | [diff] [blame] | 511 | struct gb_power_supply_get_property_descriptors_request *req; |
| 512 | struct gb_power_supply_get_property_descriptors_response *resp; |
| 513 | struct gb_operation *op; |
| 514 | u8 props_count = gbpsy->properties_count; |
Rui Miguel Silva | 47becc5 | 2016-07-13 14:11:20 +0100 | [diff] [blame] | 515 | enum power_supply_property psp; |
Rui Miguel Silva | ffe2e24 | 2015-11-12 15:36:02 +0000 | [diff] [blame] | 516 | int ret; |
Rui Miguel Silva | 47becc5 | 2016-07-13 14:11:20 +0100 | [diff] [blame] | 517 | int i, r = 0; |
Rui Miguel Silva | ffe2e24 | 2015-11-12 15:36:02 +0000 | [diff] [blame] | 518 | |
Rui Miguel Silva | 9d15134 | 2016-02-04 14:00:36 +0000 | [diff] [blame] | 519 | if (props_count == 0) |
Rui Miguel Silva | ffe2e24 | 2015-11-12 15:36:02 +0000 | [diff] [blame] | 520 | return 0; |
| 521 | |
Rui Miguel Silva | 9d15134 | 2016-02-04 14:00:36 +0000 | [diff] [blame] | 522 | op = gb_operation_create(connection, |
| 523 | GB_POWER_SUPPLY_TYPE_GET_PROP_DESCRIPTORS, |
| 524 | sizeof(req), sizeof(*resp) + props_count * |
| 525 | sizeof(struct gb_power_supply_props_desc), |
| 526 | GFP_KERNEL); |
| 527 | if (!op) |
| 528 | return -ENOMEM; |
Rui Miguel Silva | ffe2e24 | 2015-11-12 15:36:02 +0000 | [diff] [blame] | 529 | |
Rui Miguel Silva | 9d15134 | 2016-02-04 14:00:36 +0000 | [diff] [blame] | 530 | req = op->request->payload; |
| 531 | req->psy_id = gbpsy->id; |
| 532 | |
| 533 | ret = gb_operation_request_send_sync(op); |
Rui Miguel Silva | ffe2e24 | 2015-11-12 15:36:02 +0000 | [diff] [blame] | 534 | if (ret < 0) |
Rui Miguel Silva | 9d15134 | 2016-02-04 14:00:36 +0000 | [diff] [blame] | 535 | goto out_put_operation; |
| 536 | |
| 537 | resp = op->response->payload; |
Rui Miguel Silva | ffe2e24 | 2015-11-12 15:36:02 +0000 | [diff] [blame] | 538 | |
Rui Miguel Silva | 47becc5 | 2016-07-13 14:11:20 +0100 | [diff] [blame] | 539 | /* validate received properties */ |
| 540 | for (i = 0; i < props_count; i++) { |
| 541 | ret = get_psp_from_gb_prop(resp->props[i].property, &psp); |
| 542 | if (ret < 0) { |
| 543 | dev_warn(&connection->bundle->dev, |
| 544 | "greybus property %u it is not supported by this kernel, dropped\n", |
| 545 | resp->props[i].property); |
| 546 | gbpsy->properties_count--; |
| 547 | } |
| 548 | } |
| 549 | |
Rui Miguel Silva | ffe2e24 | 2015-11-12 15:36:02 +0000 | [diff] [blame] | 550 | gbpsy->props = kcalloc(gbpsy->properties_count, sizeof(*gbpsy->props), |
| 551 | GFP_KERNEL); |
Rui Miguel Silva | 9d15134 | 2016-02-04 14:00:36 +0000 | [diff] [blame] | 552 | if (!gbpsy->props) { |
| 553 | ret = -ENOMEM; |
| 554 | goto out_put_operation; |
| 555 | } |
Rui Miguel Silva | ffe2e24 | 2015-11-12 15:36:02 +0000 | [diff] [blame] | 556 | |
Rui Miguel Silva | 9d15134 | 2016-02-04 14:00:36 +0000 | [diff] [blame] | 557 | gbpsy->props_raw = kcalloc(gbpsy->properties_count, |
| 558 | sizeof(*gbpsy->props_raw), GFP_KERNEL); |
| 559 | if (!gbpsy->props_raw) { |
| 560 | ret = -ENOMEM; |
| 561 | goto out_put_operation; |
| 562 | } |
| 563 | |
Rui Miguel Silva | 47becc5 | 2016-07-13 14:11:20 +0100 | [diff] [blame] | 564 | /* Store available properties, skip the ones we do not support */ |
| 565 | for (i = 0; i < props_count; i++) { |
| 566 | ret = get_psp_from_gb_prop(resp->props[i].property, &psp); |
| 567 | if (ret < 0) { |
| 568 | r++; |
| 569 | continue; |
| 570 | } |
| 571 | gbpsy->props[i - r].prop = psp; |
| 572 | gbpsy->props[i - r].gb_prop = resp->props[i].property; |
| 573 | gbpsy->props_raw[i - r] = psp; |
Rui Miguel Silva | 9d15134 | 2016-02-04 14:00:36 +0000 | [diff] [blame] | 574 | if (resp->props[i].is_writeable) |
Rui Miguel Silva | 47becc5 | 2016-07-13 14:11:20 +0100 | [diff] [blame] | 575 | gbpsy->props[i - r].is_writeable = true; |
Rui Miguel Silva | ffe2e24 | 2015-11-12 15:36:02 +0000 | [diff] [blame] | 576 | } |
Greg Kroah-Hartman | c0855bf | 2014-10-21 14:31:24 +0800 | [diff] [blame] | 577 | |
| 578 | /* |
Rui Miguel Silva | ffe2e24 | 2015-11-12 15:36:02 +0000 | [diff] [blame] | 579 | * now append the properties that we already got information in the |
| 580 | * get_description operation. (char * ones) |
Greg Kroah-Hartman | c0855bf | 2014-10-21 14:31:24 +0800 | [diff] [blame] | 581 | */ |
Rui Miguel Silva | ffe2e24 | 2015-11-12 15:36:02 +0000 | [diff] [blame] | 582 | _gb_power_supply_append_props(gbpsy); |
| 583 | |
Rui Miguel Silva | 47becc5 | 2016-07-13 14:11:20 +0100 | [diff] [blame] | 584 | ret = 0; |
Rui Miguel Silva | 9d15134 | 2016-02-04 14:00:36 +0000 | [diff] [blame] | 585 | out_put_operation: |
| 586 | gb_operation_put(op); |
| 587 | |
| 588 | return ret; |
Greg Kroah-Hartman | 43789c3 | 2014-10-20 15:09:49 +0800 | [diff] [blame] | 589 | } |
| 590 | |
Rui Miguel Silva | ffe2e24 | 2015-11-12 15:36:02 +0000 | [diff] [blame] | 591 | static int __gb_power_supply_property_update(struct gb_power_supply *gbpsy, |
| 592 | enum power_supply_property psp) |
Greg Kroah-Hartman | 33ea3a3 | 2014-09-07 15:39:34 -0700 | [diff] [blame] | 593 | { |
Rui Miguel Silva | ffe2e24 | 2015-11-12 15:36:02 +0000 | [diff] [blame] | 594 | struct gb_connection *connection = get_conn_from_psy(gbpsy); |
| 595 | struct gb_power_supply_prop *prop; |
| 596 | struct gb_power_supply_get_property_request req; |
| 597 | struct gb_power_supply_get_property_response resp; |
Rui Miguel Silva | 6e720c2 | 2016-07-13 14:11:19 +0100 | [diff] [blame] | 598 | int val; |
Rui Miguel Silva | ffe2e24 | 2015-11-12 15:36:02 +0000 | [diff] [blame] | 599 | int ret; |
Greg Kroah-Hartman | c0855bf | 2014-10-21 14:31:24 +0800 | [diff] [blame] | 600 | |
Rui Miguel Silva | ffe2e24 | 2015-11-12 15:36:02 +0000 | [diff] [blame] | 601 | prop = get_psy_prop(gbpsy, psp); |
| 602 | if (!prop) |
| 603 | return -EINVAL; |
| 604 | req.psy_id = gbpsy->id; |
Rui Miguel Silva | 47becc5 | 2016-07-13 14:11:20 +0100 | [diff] [blame] | 605 | req.property = prop->gb_prop; |
Rui Miguel Silva | ffe2e24 | 2015-11-12 15:36:02 +0000 | [diff] [blame] | 606 | |
| 607 | ret = gb_operation_sync(connection, GB_POWER_SUPPLY_TYPE_GET_PROPERTY, |
| 608 | &req, sizeof(req), &resp, sizeof(resp)); |
| 609 | if (ret < 0) |
| 610 | return ret; |
| 611 | |
| 612 | val = le32_to_cpu(resp.prop_val); |
| 613 | if (val == prop->val) |
| 614 | return 0; |
| 615 | |
| 616 | prop->previous_val = prop->val; |
| 617 | prop->val = val; |
| 618 | |
| 619 | check_changed(gbpsy, prop); |
| 620 | |
| 621 | return 0; |
| 622 | } |
| 623 | |
| 624 | static int __gb_power_supply_property_get(struct gb_power_supply *gbpsy, |
| 625 | enum power_supply_property psp, |
| 626 | union power_supply_propval *val) |
| 627 | { |
| 628 | struct gb_power_supply_prop *prop; |
| 629 | |
| 630 | prop = get_psy_prop(gbpsy, psp); |
| 631 | if (!prop) |
| 632 | return -EINVAL; |
| 633 | |
| 634 | val->intval = prop->val; |
| 635 | return 0; |
| 636 | } |
| 637 | |
| 638 | static int __gb_power_supply_property_strval_get(struct gb_power_supply *gbpsy, |
| 639 | enum power_supply_property psp, |
| 640 | union power_supply_propval *val) |
| 641 | { |
| 642 | switch (psp) { |
| 643 | case POWER_SUPPLY_PROP_MODEL_NAME: |
Rui Miguel Silva | f921fb1 | 2016-01-08 13:53:46 +0000 | [diff] [blame] | 644 | val->strval = gbpsy->model_name; |
Rui Miguel Silva | ffe2e24 | 2015-11-12 15:36:02 +0000 | [diff] [blame] | 645 | break; |
| 646 | case POWER_SUPPLY_PROP_MANUFACTURER: |
Rui Miguel Silva | f921fb1 | 2016-01-08 13:53:46 +0000 | [diff] [blame] | 647 | val->strval = gbpsy->manufacturer; |
Rui Miguel Silva | ffe2e24 | 2015-11-12 15:36:02 +0000 | [diff] [blame] | 648 | break; |
| 649 | case POWER_SUPPLY_PROP_SERIAL_NUMBER: |
Rui Miguel Silva | f921fb1 | 2016-01-08 13:53:46 +0000 | [diff] [blame] | 650 | val->strval = gbpsy->serial_number; |
Rui Miguel Silva | ffe2e24 | 2015-11-12 15:36:02 +0000 | [diff] [blame] | 651 | break; |
| 652 | default: |
| 653 | break; |
| 654 | } |
| 655 | |
| 656 | return 0; |
| 657 | } |
| 658 | |
| 659 | static int _gb_power_supply_property_get(struct gb_power_supply *gbpsy, |
| 660 | enum power_supply_property psp, |
| 661 | union power_supply_propval *val) |
| 662 | { |
| 663 | struct gb_connection *connection = get_conn_from_psy(gbpsy); |
| 664 | int ret; |
Greg Kroah-Hartman | c0855bf | 2014-10-21 14:31:24 +0800 | [diff] [blame] | 665 | |
| 666 | /* |
Rui Miguel Silva | ffe2e24 | 2015-11-12 15:36:02 +0000 | [diff] [blame] | 667 | * Properties of type const char *, were already fetched on |
| 668 | * get_description operation and should be cached in gb |
Greg Kroah-Hartman | c0855bf | 2014-10-21 14:31:24 +0800 | [diff] [blame] | 669 | */ |
Rui Miguel Silva | ffe2e24 | 2015-11-12 15:36:02 +0000 | [diff] [blame] | 670 | if (is_prop_valint(psp)) |
| 671 | ret = __gb_power_supply_property_get(gbpsy, psp, val); |
| 672 | else |
| 673 | ret = __gb_power_supply_property_strval_get(gbpsy, psp, val); |
| 674 | |
| 675 | if (ret < 0) |
| 676 | dev_err(&connection->bundle->dev, "get property %u\n", psp); |
| 677 | |
| 678 | return 0; |
| 679 | } |
| 680 | |
Rui Miguel Silva | b5fbe81 | 2016-08-16 22:31:57 +0100 | [diff] [blame] | 681 | static int is_cache_valid(struct gb_power_supply *gbpsy) |
| 682 | { |
| 683 | /* check if cache is good enough or it has expired */ |
| 684 | if (gbpsy->cache_invalid) { |
| 685 | gbpsy->cache_invalid = 0; |
| 686 | return 0; |
| 687 | } |
| 688 | |
| 689 | if (gbpsy->last_update && |
| 690 | time_is_after_jiffies(gbpsy->last_update + |
| 691 | msecs_to_jiffies(cache_time))) |
| 692 | return 1; |
| 693 | |
| 694 | return 0; |
| 695 | } |
| 696 | |
Rui Miguel Silva | ffe2e24 | 2015-11-12 15:36:02 +0000 | [diff] [blame] | 697 | static int gb_power_supply_status_get(struct gb_power_supply *gbpsy) |
| 698 | { |
Philip Yang | 4e013b6 | 2016-08-31 11:11:18 +0800 | [diff] [blame] | 699 | struct gb_connection *connection = get_conn_from_psy(gbpsy); |
Rui Miguel Silva | ffe2e24 | 2015-11-12 15:36:02 +0000 | [diff] [blame] | 700 | int ret = 0; |
| 701 | int i; |
| 702 | |
Rui Miguel Silva | b5fbe81 | 2016-08-16 22:31:57 +0100 | [diff] [blame] | 703 | if (is_cache_valid(gbpsy)) |
Rui Miguel Silva | ffe2e24 | 2015-11-12 15:36:02 +0000 | [diff] [blame] | 704 | return 0; |
| 705 | |
Philip Yang | 4e013b6 | 2016-08-31 11:11:18 +0800 | [diff] [blame] | 706 | ret = gb_pm_runtime_get_sync(connection->bundle); |
| 707 | if (ret) |
| 708 | return ret; |
| 709 | |
Rui Miguel Silva | ffe2e24 | 2015-11-12 15:36:02 +0000 | [diff] [blame] | 710 | for (i = 0; i < gbpsy->properties_count; i++) { |
| 711 | ret = __gb_power_supply_property_update(gbpsy, |
| 712 | gbpsy->props[i].prop); |
| 713 | if (ret < 0) |
| 714 | break; |
Greg Kroah-Hartman | 0369a45 | 2014-10-21 16:25:13 +0800 | [diff] [blame] | 715 | } |
Rui Miguel Silva | ffe2e24 | 2015-11-12 15:36:02 +0000 | [diff] [blame] | 716 | |
| 717 | if (ret == 0) |
| 718 | gbpsy->last_update = jiffies; |
| 719 | |
Philip Yang | 4e013b6 | 2016-08-31 11:11:18 +0800 | [diff] [blame] | 720 | gb_pm_runtime_put_autosuspend(connection->bundle); |
Rui Miguel Silva | ffe2e24 | 2015-11-12 15:36:02 +0000 | [diff] [blame] | 721 | return ret; |
Greg Kroah-Hartman | 33ea3a3 | 2014-09-07 15:39:34 -0700 | [diff] [blame] | 722 | } |
| 723 | |
Rui Miguel Silva | ffe2e24 | 2015-11-12 15:36:02 +0000 | [diff] [blame] | 724 | 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] | 725 | { |
Rui Miguel Silva | ffe2e24 | 2015-11-12 15:36:02 +0000 | [diff] [blame] | 726 | /* check if there a change that need to be reported */ |
| 727 | gb_power_supply_status_get(gbpsy); |
Greg Kroah-Hartman | c0855bf | 2014-10-21 14:31:24 +0800 | [diff] [blame] | 728 | |
Rui Miguel Silva | ffe2e24 | 2015-11-12 15:36:02 +0000 | [diff] [blame] | 729 | if (!gbpsy->changed) |
| 730 | return; |
Greg Kroah-Hartman | c0855bf | 2014-10-21 14:31:24 +0800 | [diff] [blame] | 731 | |
Rui Miguel Silva | ffe2e24 | 2015-11-12 15:36:02 +0000 | [diff] [blame] | 732 | gbpsy->update_interval = update_interval_init; |
| 733 | __gb_power_supply_changed(gbpsy); |
| 734 | gbpsy->changed = false; |
Greg Kroah-Hartman | 43789c3 | 2014-10-20 15:09:49 +0800 | [diff] [blame] | 735 | } |
| 736 | |
Rui Miguel Silva | ffe2e24 | 2015-11-12 15:36:02 +0000 | [diff] [blame] | 737 | static void gb_power_supply_work(struct work_struct *work) |
Greg Kroah-Hartman | 33ea3a3 | 2014-09-07 15:39:34 -0700 | [diff] [blame] | 738 | { |
Rui Miguel Silva | ffe2e24 | 2015-11-12 15:36:02 +0000 | [diff] [blame] | 739 | struct gb_power_supply *gbpsy = container_of(work, |
| 740 | struct gb_power_supply, |
| 741 | work.work); |
Greg Kroah-Hartman | c0855bf | 2014-10-21 14:31:24 +0800 | [diff] [blame] | 742 | |
Rui Miguel Silva | ffe2e24 | 2015-11-12 15:36:02 +0000 | [diff] [blame] | 743 | /* |
| 744 | * if the poll interval is not set, disable polling, this is helpful |
| 745 | * specially at unregister time. |
| 746 | */ |
| 747 | if (!gbpsy->update_interval) |
| 748 | return; |
Greg Kroah-Hartman | c0855bf | 2014-10-21 14:31:24 +0800 | [diff] [blame] | 749 | |
Rui Miguel Silva | ffe2e24 | 2015-11-12 15:36:02 +0000 | [diff] [blame] | 750 | gb_power_supply_status_update(gbpsy); |
| 751 | next_interval(gbpsy); |
| 752 | schedule_delayed_work(&gbpsy->work, gbpsy->update_interval); |
Greg Kroah-Hartman | 33ea3a3 | 2014-09-07 15:39:34 -0700 | [diff] [blame] | 753 | } |
| 754 | |
Greg Kroah-Hartman | 33ea3a3 | 2014-09-07 15:39:34 -0700 | [diff] [blame] | 755 | static int get_property(struct power_supply *b, |
| 756 | enum power_supply_property psp, |
| 757 | union power_supply_propval *val) |
| 758 | { |
Rui Miguel Silva | ffe2e24 | 2015-11-12 15:36:02 +0000 | [diff] [blame] | 759 | struct gb_power_supply *gbpsy = to_gb_power_supply(b); |
Greg Kroah-Hartman | 33ea3a3 | 2014-09-07 15:39:34 -0700 | [diff] [blame] | 760 | |
Rui Miguel Silva | ffe2e24 | 2015-11-12 15:36:02 +0000 | [diff] [blame] | 761 | gb_power_supply_status_get(gbpsy); |
Greg Kroah-Hartman | 33ea3a3 | 2014-09-07 15:39:34 -0700 | [diff] [blame] | 762 | |
Rui Miguel Silva | ffe2e24 | 2015-11-12 15:36:02 +0000 | [diff] [blame] | 763 | return _gb_power_supply_property_get(gbpsy, psp, val); |
Greg Kroah-Hartman | 33ea3a3 | 2014-09-07 15:39:34 -0700 | [diff] [blame] | 764 | } |
| 765 | |
Rui Miguel Silva | ffe2e24 | 2015-11-12 15:36:02 +0000 | [diff] [blame] | 766 | static int gb_power_supply_property_set(struct gb_power_supply *gbpsy, |
| 767 | enum power_supply_property psp, |
| 768 | int val) |
| 769 | { |
| 770 | struct gb_connection *connection = get_conn_from_psy(gbpsy); |
| 771 | struct gb_power_supply_prop *prop; |
| 772 | struct gb_power_supply_set_property_request req; |
| 773 | int ret; |
| 774 | |
Philip Yang | 4e013b6 | 2016-08-31 11:11:18 +0800 | [diff] [blame] | 775 | ret = gb_pm_runtime_get_sync(connection->bundle); |
| 776 | if (ret) |
| 777 | return ret; |
| 778 | |
Rui Miguel Silva | ffe2e24 | 2015-11-12 15:36:02 +0000 | [diff] [blame] | 779 | prop = get_psy_prop(gbpsy, psp); |
Philip Yang | 4e013b6 | 2016-08-31 11:11:18 +0800 | [diff] [blame] | 780 | if (!prop) { |
| 781 | ret = -EINVAL; |
| 782 | goto out; |
| 783 | } |
| 784 | |
Rui Miguel Silva | ffe2e24 | 2015-11-12 15:36:02 +0000 | [diff] [blame] | 785 | req.psy_id = gbpsy->id; |
Rui Miguel Silva | 47becc5 | 2016-07-13 14:11:20 +0100 | [diff] [blame] | 786 | req.property = prop->gb_prop; |
Rui Miguel Silva | 6e720c2 | 2016-07-13 14:11:19 +0100 | [diff] [blame] | 787 | req.prop_val = cpu_to_le32((s32)val); |
Rui Miguel Silva | ffe2e24 | 2015-11-12 15:36:02 +0000 | [diff] [blame] | 788 | |
| 789 | ret = gb_operation_sync(connection, GB_POWER_SUPPLY_TYPE_SET_PROPERTY, |
| 790 | &req, sizeof(req), NULL, 0); |
| 791 | if (ret < 0) |
| 792 | goto out; |
| 793 | |
| 794 | /* cache immediately the new value */ |
| 795 | prop->val = val; |
| 796 | |
| 797 | out: |
Philip Yang | 4e013b6 | 2016-08-31 11:11:18 +0800 | [diff] [blame] | 798 | gb_pm_runtime_put_autosuspend(connection->bundle); |
Rui Miguel Silva | ffe2e24 | 2015-11-12 15:36:02 +0000 | [diff] [blame] | 799 | return ret; |
| 800 | } |
| 801 | |
| 802 | static int set_property(struct power_supply *b, |
| 803 | enum power_supply_property psp, |
| 804 | const union power_supply_propval *val) |
| 805 | { |
| 806 | struct gb_power_supply *gbpsy = to_gb_power_supply(b); |
| 807 | |
| 808 | return gb_power_supply_property_set(gbpsy, psp, val->intval); |
| 809 | } |
| 810 | |
| 811 | static int property_is_writeable(struct power_supply *b, |
| 812 | enum power_supply_property psp) |
| 813 | { |
| 814 | struct gb_power_supply *gbpsy = to_gb_power_supply(b); |
| 815 | |
| 816 | return is_psy_prop_writeable(gbpsy, psp); |
| 817 | } |
| 818 | |
Rui Miguel Silva | ffe2e24 | 2015-11-12 15:36:02 +0000 | [diff] [blame] | 819 | static int gb_power_supply_register(struct gb_power_supply *gbpsy) |
Greg Kroah-Hartman | a549be51 | 2015-05-01 20:41:00 +0200 | [diff] [blame] | 820 | { |
Rui Miguel Silva | ffe2e24 | 2015-11-12 15:36:02 +0000 | [diff] [blame] | 821 | struct gb_connection *connection = get_conn_from_psy(gbpsy); |
Greg Kroah-Hartman | a549be51 | 2015-05-01 20:41:00 +0200 | [diff] [blame] | 822 | struct power_supply_config cfg = {}; |
Greg Kroah-Hartman | a549be51 | 2015-05-01 20:41:00 +0200 | [diff] [blame] | 823 | |
Rui Miguel Silva | ffe2e24 | 2015-11-12 15:36:02 +0000 | [diff] [blame] | 824 | cfg.drv_data = gbpsy; |
Greg Kroah-Hartman | a549be51 | 2015-05-01 20:41:00 +0200 | [diff] [blame] | 825 | |
Rui Miguel Silva | ffe2e24 | 2015-11-12 15:36:02 +0000 | [diff] [blame] | 826 | gbpsy->desc.name = gbpsy->name; |
| 827 | gbpsy->desc.type = gbpsy->type; |
| 828 | gbpsy->desc.properties = gbpsy->props_raw; |
| 829 | gbpsy->desc.num_properties = total_props(gbpsy); |
| 830 | gbpsy->desc.get_property = get_property; |
| 831 | gbpsy->desc.set_property = set_property; |
| 832 | gbpsy->desc.property_is_writeable = property_is_writeable; |
Greg Kroah-Hartman | a549be51 | 2015-05-01 20:41:00 +0200 | [diff] [blame] | 833 | |
Rui Miguel Silva | ffe2e24 | 2015-11-12 15:36:02 +0000 | [diff] [blame] | 834 | gbpsy->psy = power_supply_register(&connection->bundle->dev, |
| 835 | &gbpsy->desc, &cfg); |
Alex Elder | 95073cc | 2016-05-24 13:34:51 -0500 | [diff] [blame] | 836 | return PTR_ERR_OR_ZERO(gbpsy->psy); |
Greg Kroah-Hartman | a549be51 | 2015-05-01 20:41:00 +0200 | [diff] [blame] | 837 | } |
Greg Kroah-Hartman | a549be51 | 2015-05-01 20:41:00 +0200 | [diff] [blame] | 838 | |
Rui Miguel Silva | ffe2e24 | 2015-11-12 15:36:02 +0000 | [diff] [blame] | 839 | static void _gb_power_supply_free(struct gb_power_supply *gbpsy) |
Greg Kroah-Hartman | 33ea3a3 | 2014-09-07 15:39:34 -0700 | [diff] [blame] | 840 | { |
Rui Miguel Silva | ffe2e24 | 2015-11-12 15:36:02 +0000 | [diff] [blame] | 841 | kfree(gbpsy->serial_number); |
| 842 | kfree(gbpsy->model_name); |
| 843 | kfree(gbpsy->manufacturer); |
| 844 | kfree(gbpsy->props_raw); |
| 845 | kfree(gbpsy->props); |
Rui Miguel Silva | ffe2e24 | 2015-11-12 15:36:02 +0000 | [diff] [blame] | 846 | } |
Greg Kroah-Hartman | 33ea3a3 | 2014-09-07 15:39:34 -0700 | [diff] [blame] | 847 | |
Rui Miguel Silva | ffe2e24 | 2015-11-12 15:36:02 +0000 | [diff] [blame] | 848 | static void _gb_power_supply_release(struct gb_power_supply *gbpsy) |
| 849 | { |
Rui Miguel Silva | ffe2e24 | 2015-11-12 15:36:02 +0000 | [diff] [blame] | 850 | gbpsy->update_interval = 0; |
| 851 | |
| 852 | cancel_delayed_work_sync(&gbpsy->work); |
Rui Miguel Silva | 722a133 | 2016-09-08 17:17:50 +0100 | [diff] [blame] | 853 | |
Rui Miguel Silva | ff85f72 | 2016-01-08 13:53:43 +0000 | [diff] [blame] | 854 | if (gbpsy->registered) |
| 855 | power_supply_unregister(gbpsy->psy); |
Rui Miguel Silva | ffe2e24 | 2015-11-12 15:36:02 +0000 | [diff] [blame] | 856 | |
| 857 | _gb_power_supply_free(gbpsy); |
| 858 | } |
| 859 | |
| 860 | static void _gb_power_supplies_release(struct gb_power_supplies *supplies) |
| 861 | { |
| 862 | int i; |
| 863 | |
Rui Miguel Silva | 7ccac20d | 2016-01-08 13:53:42 +0000 | [diff] [blame] | 864 | if (!supplies->supply) |
| 865 | return; |
| 866 | |
Rui Miguel Silva | ffe2e24 | 2015-11-12 15:36:02 +0000 | [diff] [blame] | 867 | mutex_lock(&supplies->supplies_lock); |
| 868 | for (i = 0; i < supplies->supplies_count; i++) |
| 869 | _gb_power_supply_release(&supplies->supply[i]); |
Rui Miguel Silva | accad1b | 2016-01-08 13:53:47 +0000 | [diff] [blame] | 870 | kfree(supplies->supply); |
Rui Miguel Silva | ffe2e24 | 2015-11-12 15:36:02 +0000 | [diff] [blame] | 871 | mutex_unlock(&supplies->supplies_lock); |
Rui Miguel Silva | 23f25ba | 2016-01-08 13:53:44 +0000 | [diff] [blame] | 872 | kfree(supplies); |
Rui Miguel Silva | ffe2e24 | 2015-11-12 15:36:02 +0000 | [diff] [blame] | 873 | } |
| 874 | |
| 875 | static int gb_power_supplies_get_count(struct gb_power_supplies *supplies) |
| 876 | { |
| 877 | struct gb_power_supply_get_supplies_response resp; |
| 878 | int ret; |
| 879 | |
| 880 | ret = gb_operation_sync(supplies->connection, |
| 881 | GB_POWER_SUPPLY_TYPE_GET_SUPPLIES, |
| 882 | NULL, 0, &resp, sizeof(resp)); |
| 883 | if (ret < 0) |
| 884 | return ret; |
| 885 | |
| 886 | if (!resp.supplies_count) |
| 887 | return -EINVAL; |
| 888 | |
| 889 | supplies->supplies_count = resp.supplies_count; |
| 890 | |
| 891 | return ret; |
| 892 | } |
| 893 | |
| 894 | static int gb_power_supply_config(struct gb_power_supplies *supplies, int id) |
| 895 | { |
| 896 | struct gb_power_supply *gbpsy = &supplies->supply[id]; |
| 897 | int ret; |
| 898 | |
| 899 | gbpsy->supplies = supplies; |
| 900 | gbpsy->id = id; |
| 901 | |
| 902 | ret = gb_power_supply_description_get(gbpsy); |
| 903 | if (ret < 0) |
Viresh Kumar | 7e9fba8 | 2016-02-12 16:08:32 +0530 | [diff] [blame] | 904 | return ret; |
Rui Miguel Silva | ffe2e24 | 2015-11-12 15:36:02 +0000 | [diff] [blame] | 905 | |
Rui Miguel Silva | 6ac9166 | 2016-08-26 11:52:05 +0100 | [diff] [blame] | 906 | return gb_power_supply_prop_descriptors_get(gbpsy); |
Viresh Kumar | 7e9fba8 | 2016-02-12 16:08:32 +0530 | [diff] [blame] | 907 | } |
| 908 | |
| 909 | static int gb_power_supply_enable(struct gb_power_supply *gbpsy) |
| 910 | { |
| 911 | int ret; |
Rui Miguel Silva | ffe2e24 | 2015-11-12 15:36:02 +0000 | [diff] [blame] | 912 | |
Rui Miguel Silva | 6ac9166 | 2016-08-26 11:52:05 +0100 | [diff] [blame] | 913 | /* guarantee that we have an unique name, before register */ |
| 914 | ret = __gb_power_supply_set_name(gbpsy->model_name, gbpsy->name, |
| 915 | sizeof(gbpsy->name)); |
| 916 | if (ret < 0) |
| 917 | return ret; |
| 918 | |
Philip Yang | 4e013b6 | 2016-08-31 11:11:18 +0800 | [diff] [blame] | 919 | mutex_init(&gbpsy->supply_lock); |
| 920 | |
Rui Miguel Silva | ffe2e24 | 2015-11-12 15:36:02 +0000 | [diff] [blame] | 921 | ret = gb_power_supply_register(gbpsy); |
| 922 | if (ret < 0) |
Viresh Kumar | 7e9fba8 | 2016-02-12 16:08:32 +0530 | [diff] [blame] | 923 | return ret; |
Rui Miguel Silva | ffe2e24 | 2015-11-12 15:36:02 +0000 | [diff] [blame] | 924 | |
| 925 | gbpsy->update_interval = update_interval_init; |
| 926 | INIT_DELAYED_WORK(&gbpsy->work, gb_power_supply_work); |
| 927 | schedule_delayed_work(&gbpsy->work, 0); |
| 928 | |
Viresh Kumar | 7e9fba8 | 2016-02-12 16:08:32 +0530 | [diff] [blame] | 929 | /* everything went fine, mark it for release code to know */ |
| 930 | gbpsy->registered = true; |
| 931 | |
| 932 | return 0; |
Rui Miguel Silva | ffe2e24 | 2015-11-12 15:36:02 +0000 | [diff] [blame] | 933 | } |
| 934 | |
| 935 | static int gb_power_supplies_setup(struct gb_power_supplies *supplies) |
| 936 | { |
| 937 | struct gb_connection *connection = supplies->connection; |
| 938 | int ret; |
| 939 | int i; |
| 940 | |
| 941 | mutex_lock(&supplies->supplies_lock); |
| 942 | |
| 943 | ret = gb_power_supplies_get_count(supplies); |
| 944 | if (ret < 0) |
| 945 | goto out; |
| 946 | |
| 947 | supplies->supply = kzalloc(supplies->supplies_count * |
| 948 | sizeof(struct gb_power_supply), |
| 949 | GFP_KERNEL); |
| 950 | |
Johan Hovold | e0d91ff | 2016-01-07 12:28:29 +0100 | [diff] [blame] | 951 | if (!supplies->supply) { |
| 952 | ret = -ENOMEM; |
| 953 | goto out; |
| 954 | } |
Greg Kroah-Hartman | 33ea3a3 | 2014-09-07 15:39:34 -0700 | [diff] [blame] | 955 | |
Rui Miguel Silva | ffe2e24 | 2015-11-12 15:36:02 +0000 | [diff] [blame] | 956 | for (i = 0; i < supplies->supplies_count; i++) { |
| 957 | ret = gb_power_supply_config(supplies, i); |
| 958 | if (ret < 0) { |
| 959 | dev_err(&connection->bundle->dev, |
| 960 | "Fail to configure supplies devices\n"); |
| 961 | goto out; |
| 962 | } |
| 963 | } |
| 964 | out: |
| 965 | mutex_unlock(&supplies->supplies_lock); |
| 966 | return ret; |
| 967 | } |
Greg Kroah-Hartman | 2bb7eae | 2014-10-20 15:24:57 +0800 | [diff] [blame] | 968 | |
Viresh Kumar | 7e9fba8 | 2016-02-12 16:08:32 +0530 | [diff] [blame] | 969 | static int gb_power_supplies_register(struct gb_power_supplies *supplies) |
| 970 | { |
| 971 | struct gb_connection *connection = supplies->connection; |
| 972 | int ret = 0; |
| 973 | int i; |
| 974 | |
| 975 | mutex_lock(&supplies->supplies_lock); |
| 976 | |
| 977 | for (i = 0; i < supplies->supplies_count; i++) { |
| 978 | ret = gb_power_supply_enable(&supplies->supply[i]); |
| 979 | if (ret < 0) { |
| 980 | dev_err(&connection->bundle->dev, |
| 981 | "Fail to enable supplies devices\n"); |
| 982 | break; |
| 983 | } |
| 984 | } |
| 985 | |
| 986 | mutex_unlock(&supplies->supplies_lock); |
| 987 | return ret; |
| 988 | } |
| 989 | |
Viresh Kumar | 68b1309 | 2016-02-12 16:08:33 +0530 | [diff] [blame] | 990 | static int gb_supplies_request_handler(struct gb_operation *op) |
Rui Miguel Silva | ffe2e24 | 2015-11-12 15:36:02 +0000 | [diff] [blame] | 991 | { |
| 992 | struct gb_connection *connection = op->connection; |
Greg Kroah-Hartman | 0ec3063 | 2016-03-22 14:30:35 -0400 | [diff] [blame] | 993 | struct gb_power_supplies *supplies = gb_connection_get_data(connection); |
Rui Miguel Silva | ffe2e24 | 2015-11-12 15:36:02 +0000 | [diff] [blame] | 994 | struct gb_power_supply *gbpsy; |
| 995 | struct gb_message *request; |
| 996 | struct gb_power_supply_event_request *payload; |
| 997 | u8 psy_id; |
| 998 | u8 event; |
| 999 | int ret = 0; |
Greg Kroah-Hartman | c0855bf | 2014-10-21 14:31:24 +0800 | [diff] [blame] | 1000 | |
Viresh Kumar | 68b1309 | 2016-02-12 16:08:33 +0530 | [diff] [blame] | 1001 | if (op->type != GB_POWER_SUPPLY_TYPE_EVENT) { |
Rui Miguel Silva | ffe2e24 | 2015-11-12 15:36:02 +0000 | [diff] [blame] | 1002 | dev_err(&connection->bundle->dev, |
Viresh Kumar | 68b1309 | 2016-02-12 16:08:33 +0530 | [diff] [blame] | 1003 | "Unsupported unsolicited event: %u\n", op->type); |
Rui Miguel Silva | ffe2e24 | 2015-11-12 15:36:02 +0000 | [diff] [blame] | 1004 | return -EINVAL; |
| 1005 | } |
| 1006 | |
| 1007 | request = op->request; |
| 1008 | |
| 1009 | if (request->payload_size < sizeof(*payload)) { |
| 1010 | dev_err(&connection->bundle->dev, |
| 1011 | "Wrong event size received (%zu < %zu)\n", |
| 1012 | request->payload_size, sizeof(*payload)); |
| 1013 | return -EINVAL; |
| 1014 | } |
| 1015 | |
| 1016 | payload = request->payload; |
| 1017 | psy_id = payload->psy_id; |
| 1018 | mutex_lock(&supplies->supplies_lock); |
Rui Miguel Silva | adb57cf | 2016-01-12 14:38:21 +0000 | [diff] [blame] | 1019 | if (psy_id >= supplies->supplies_count || |
| 1020 | !supplies->supply[psy_id].registered) { |
Rui Miguel Silva | ffe2e24 | 2015-11-12 15:36:02 +0000 | [diff] [blame] | 1021 | dev_err(&connection->bundle->dev, |
| 1022 | "Event received for unconfigured power_supply id: %d\n", |
| 1023 | psy_id); |
| 1024 | ret = -EINVAL; |
| 1025 | goto out_unlock; |
| 1026 | } |
| 1027 | |
| 1028 | event = payload->event; |
| 1029 | /* |
| 1030 | * we will only handle events after setup is done and before release is |
| 1031 | * running. For that just check update_interval. |
| 1032 | */ |
| 1033 | gbpsy = &supplies->supply[psy_id]; |
Rui Miguel Silva | 5f66d62 | 2016-08-16 22:31:56 +0100 | [diff] [blame] | 1034 | if (!gbpsy->update_interval) { |
Rui Miguel Silva | ffe2e24 | 2015-11-12 15:36:02 +0000 | [diff] [blame] | 1035 | ret = -ESHUTDOWN; |
| 1036 | goto out_unlock; |
| 1037 | } |
| 1038 | |
Rui Miguel Silva | b5fbe81 | 2016-08-16 22:31:57 +0100 | [diff] [blame] | 1039 | if (event & GB_POWER_SUPPLY_UPDATE) { |
| 1040 | /* |
| 1041 | * we need to make sure we invalidate cache, if not no new |
| 1042 | * values for the properties will be fetch and the all propose |
| 1043 | * of this event is missed |
| 1044 | */ |
| 1045 | gbpsy->cache_invalid = 1; |
Rui Miguel Silva | ffe2e24 | 2015-11-12 15:36:02 +0000 | [diff] [blame] | 1046 | gb_power_supply_status_update(gbpsy); |
Rui Miguel Silva | b5fbe81 | 2016-08-16 22:31:57 +0100 | [diff] [blame] | 1047 | } |
Rui Miguel Silva | ffe2e24 | 2015-11-12 15:36:02 +0000 | [diff] [blame] | 1048 | |
| 1049 | out_unlock: |
| 1050 | mutex_unlock(&supplies->supplies_lock); |
| 1051 | return ret; |
| 1052 | } |
| 1053 | |
Viresh Kumar | 68b1309 | 2016-02-12 16:08:33 +0530 | [diff] [blame] | 1054 | static int gb_power_supply_probe(struct gb_bundle *bundle, |
| 1055 | const struct greybus_bundle_id *id) |
Rui Miguel Silva | ffe2e24 | 2015-11-12 15:36:02 +0000 | [diff] [blame] | 1056 | { |
Viresh Kumar | 68b1309 | 2016-02-12 16:08:33 +0530 | [diff] [blame] | 1057 | struct greybus_descriptor_cport *cport_desc; |
| 1058 | struct gb_connection *connection; |
Rui Miguel Silva | ffe2e24 | 2015-11-12 15:36:02 +0000 | [diff] [blame] | 1059 | struct gb_power_supplies *supplies; |
Rui Miguel Silva | d9eafd5 | 2016-01-08 13:53:45 +0000 | [diff] [blame] | 1060 | int ret; |
Rui Miguel Silva | ffe2e24 | 2015-11-12 15:36:02 +0000 | [diff] [blame] | 1061 | |
Viresh Kumar | 68b1309 | 2016-02-12 16:08:33 +0530 | [diff] [blame] | 1062 | if (bundle->num_cports != 1) |
| 1063 | return -ENODEV; |
| 1064 | |
| 1065 | cport_desc = &bundle->cport_desc[0]; |
| 1066 | if (cport_desc->protocol_id != GREYBUS_PROTOCOL_POWER_SUPPLY) |
| 1067 | return -ENODEV; |
| 1068 | |
Rui Miguel Silva | ffe2e24 | 2015-11-12 15:36:02 +0000 | [diff] [blame] | 1069 | supplies = kzalloc(sizeof(*supplies), GFP_KERNEL); |
| 1070 | if (!supplies) |
| 1071 | return -ENOMEM; |
| 1072 | |
Viresh Kumar | 68b1309 | 2016-02-12 16:08:33 +0530 | [diff] [blame] | 1073 | connection = gb_connection_create(bundle, le16_to_cpu(cport_desc->id), |
| 1074 | gb_supplies_request_handler); |
| 1075 | if (IS_ERR(connection)) { |
| 1076 | ret = PTR_ERR(connection); |
| 1077 | goto out; |
| 1078 | } |
| 1079 | |
Rui Miguel Silva | ffe2e24 | 2015-11-12 15:36:02 +0000 | [diff] [blame] | 1080 | supplies->connection = connection; |
Greg Kroah-Hartman | 0ec3063 | 2016-03-22 14:30:35 -0400 | [diff] [blame] | 1081 | gb_connection_set_data(connection, supplies); |
Rui Miguel Silva | ffe2e24 | 2015-11-12 15:36:02 +0000 | [diff] [blame] | 1082 | |
| 1083 | mutex_init(&supplies->supplies_lock); |
| 1084 | |
Viresh Kumar | 68b1309 | 2016-02-12 16:08:33 +0530 | [diff] [blame] | 1085 | greybus_set_drvdata(bundle, supplies); |
| 1086 | |
| 1087 | /* We aren't ready to receive an incoming request yet */ |
| 1088 | ret = gb_connection_enable_tx(connection); |
| 1089 | if (ret) |
| 1090 | goto error_connection_destroy; |
| 1091 | |
Rui Miguel Silva | d9eafd5 | 2016-01-08 13:53:45 +0000 | [diff] [blame] | 1092 | ret = gb_power_supplies_setup(supplies); |
| 1093 | if (ret < 0) |
Viresh Kumar | 68b1309 | 2016-02-12 16:08:33 +0530 | [diff] [blame] | 1094 | goto error_connection_disable; |
| 1095 | |
| 1096 | /* We are ready to receive an incoming request now, enable RX as well */ |
| 1097 | ret = gb_connection_enable(connection); |
| 1098 | if (ret) |
| 1099 | goto error_connection_disable; |
Rui Miguel Silva | d9eafd5 | 2016-01-08 13:53:45 +0000 | [diff] [blame] | 1100 | |
Viresh Kumar | 7e9fba8 | 2016-02-12 16:08:32 +0530 | [diff] [blame] | 1101 | ret = gb_power_supplies_register(supplies); |
| 1102 | if (ret < 0) |
Viresh Kumar | 68b1309 | 2016-02-12 16:08:33 +0530 | [diff] [blame] | 1103 | goto error_connection_disable; |
Viresh Kumar | 7e9fba8 | 2016-02-12 16:08:32 +0530 | [diff] [blame] | 1104 | |
Philip Yang | 4e013b6 | 2016-08-31 11:11:18 +0800 | [diff] [blame] | 1105 | gb_pm_runtime_put_autosuspend(bundle); |
Viresh Kumar | 7e9fba8 | 2016-02-12 16:08:32 +0530 | [diff] [blame] | 1106 | return 0; |
| 1107 | |
Viresh Kumar | 68b1309 | 2016-02-12 16:08:33 +0530 | [diff] [blame] | 1108 | error_connection_disable: |
| 1109 | gb_connection_disable(connection); |
| 1110 | error_connection_destroy: |
| 1111 | gb_connection_destroy(connection); |
Viresh Kumar | 7e9fba8 | 2016-02-12 16:08:32 +0530 | [diff] [blame] | 1112 | out: |
| 1113 | _gb_power_supplies_release(supplies); |
Rui Miguel Silva | d9eafd5 | 2016-01-08 13:53:45 +0000 | [diff] [blame] | 1114 | return ret; |
Greg Kroah-Hartman | 33ea3a3 | 2014-09-07 15:39:34 -0700 | [diff] [blame] | 1115 | } |
| 1116 | |
Viresh Kumar | 68b1309 | 2016-02-12 16:08:33 +0530 | [diff] [blame] | 1117 | static void gb_power_supply_disconnect(struct gb_bundle *bundle) |
Alex Elder | 697e55d | 2014-10-20 23:01:04 -0500 | [diff] [blame] | 1118 | { |
Viresh Kumar | 68b1309 | 2016-02-12 16:08:33 +0530 | [diff] [blame] | 1119 | struct gb_power_supplies *supplies = greybus_get_drvdata(bundle); |
| 1120 | |
| 1121 | gb_connection_disable(supplies->connection); |
| 1122 | gb_connection_destroy(supplies->connection); |
Alex Elder | 697e55d | 2014-10-20 23:01:04 -0500 | [diff] [blame] | 1123 | |
Rui Miguel Silva | ffe2e24 | 2015-11-12 15:36:02 +0000 | [diff] [blame] | 1124 | _gb_power_supplies_release(supplies); |
Alex Elder | 697e55d | 2014-10-20 23:01:04 -0500 | [diff] [blame] | 1125 | } |
| 1126 | |
Viresh Kumar | 68b1309 | 2016-02-12 16:08:33 +0530 | [diff] [blame] | 1127 | static const struct greybus_bundle_id gb_power_supply_id_table[] = { |
| 1128 | { GREYBUS_DEVICE_CLASS(GREYBUS_CLASS_POWER_SUPPLY) }, |
| 1129 | { } |
Alex Elder | 19d03de | 2014-11-05 16:12:53 -0600 | [diff] [blame] | 1130 | }; |
Viresh Kumar | 68b1309 | 2016-02-12 16:08:33 +0530 | [diff] [blame] | 1131 | MODULE_DEVICE_TABLE(greybus, gb_power_supply_id_table); |
Alex Elder | 19d03de | 2014-11-05 16:12:53 -0600 | [diff] [blame] | 1132 | |
Viresh Kumar | 68b1309 | 2016-02-12 16:08:33 +0530 | [diff] [blame] | 1133 | static struct greybus_driver gb_power_supply_driver = { |
| 1134 | .name = "power_supply", |
| 1135 | .probe = gb_power_supply_probe, |
| 1136 | .disconnect = gb_power_supply_disconnect, |
| 1137 | .id_table = gb_power_supply_id_table, |
| 1138 | }; |
| 1139 | module_greybus_driver(gb_power_supply_driver); |
Alex Elder | 19d03de | 2014-11-05 16:12:53 -0600 | [diff] [blame] | 1140 | |
Greg Kroah-Hartman | 7dd2626 | 2014-12-24 13:01:42 -0800 | [diff] [blame] | 1141 | MODULE_LICENSE("GPL v2"); |