Przemyslaw Marczak | 6262b72 | 2015-04-20 20:07:44 +0200 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2014-2015 Samsung Electronics |
| 3 | * Przemyslaw Marczak <p.marczak@samsung.com> |
| 4 | * |
| 5 | * SPDX-License-Identifier: GPL-2.0+ |
| 6 | */ |
| 7 | #include <common.h> |
| 8 | #include <errno.h> |
| 9 | #include <dm.h> |
| 10 | #include <dm/uclass-internal.h> |
| 11 | #include <power/regulator.h> |
| 12 | |
| 13 | #define LIMIT_SEQ 3 |
| 14 | #define LIMIT_DEVNAME 20 |
| 15 | #define LIMIT_OFNAME 20 |
| 16 | #define LIMIT_INFO 16 |
| 17 | |
| 18 | static struct udevice *currdev; |
| 19 | |
| 20 | static int failed(const char *getset, const char *thing, |
| 21 | const char *for_dev, int ret) |
| 22 | { |
| 23 | printf("Can't %s %s %s.\nError: %d (%s)\n", getset, thing, for_dev, |
| 24 | ret, errno_str(ret)); |
| 25 | return CMD_RET_FAILURE; |
| 26 | } |
| 27 | |
| 28 | static int regulator_get(bool list_only, int get_seq, struct udevice **devp) |
| 29 | { |
| 30 | struct dm_regulator_uclass_platdata *uc_pdata; |
| 31 | struct udevice *dev; |
| 32 | int ret; |
| 33 | |
| 34 | if (devp) |
| 35 | *devp = NULL; |
| 36 | |
| 37 | for (ret = uclass_first_device(UCLASS_REGULATOR, &dev); dev; |
| 38 | ret = uclass_next_device(&dev)) { |
| 39 | if (list_only) { |
| 40 | uc_pdata = dev_get_uclass_platdata(dev); |
| 41 | printf("|%*d | %*.*s @ %-*.*s| %s @ %s\n", |
| 42 | LIMIT_SEQ, dev->seq, |
| 43 | LIMIT_DEVNAME, LIMIT_DEVNAME, dev->name, |
| 44 | LIMIT_OFNAME, LIMIT_OFNAME, uc_pdata->name, |
| 45 | dev->parent->name, |
| 46 | dev_get_uclass_name(dev->parent)); |
| 47 | continue; |
| 48 | } |
| 49 | |
| 50 | if (dev->seq == get_seq) { |
| 51 | if (devp) |
| 52 | *devp = dev; |
| 53 | else |
| 54 | return -EINVAL; |
| 55 | |
| 56 | return 0; |
| 57 | } |
| 58 | } |
| 59 | |
| 60 | if (list_only) |
| 61 | return ret; |
| 62 | |
| 63 | return -ENODEV; |
| 64 | } |
| 65 | |
| 66 | static int do_dev(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) |
| 67 | { |
| 68 | struct dm_regulator_uclass_platdata *uc_pdata; |
| 69 | int seq, ret = -ENXIO; |
| 70 | |
| 71 | switch (argc) { |
| 72 | case 2: |
| 73 | seq = simple_strtoul(argv[1], NULL, 0); |
| 74 | ret = uclass_get_device_by_seq(UCLASS_REGULATOR, seq, &currdev); |
| 75 | if (ret && (ret = regulator_get(false, seq, &currdev))) |
| 76 | goto failed; |
| 77 | case 1: |
| 78 | uc_pdata = dev_get_uclass_platdata(currdev); |
| 79 | if (!uc_pdata) |
| 80 | goto failed; |
| 81 | |
| 82 | printf("dev: %d @ %s\n", currdev->seq, uc_pdata->name); |
| 83 | } |
| 84 | |
| 85 | return CMD_RET_SUCCESS; |
| 86 | failed: |
| 87 | return failed("get", "the", "device", ret); |
| 88 | } |
| 89 | |
| 90 | static int get_curr_dev_and_pl(struct udevice **devp, |
| 91 | struct dm_regulator_uclass_platdata **uc_pdata, |
| 92 | bool allow_type_fixed) |
| 93 | { |
| 94 | *devp = NULL; |
| 95 | *uc_pdata = NULL; |
| 96 | |
| 97 | if (!currdev) |
| 98 | return failed("get", "current", "device", -ENODEV); |
| 99 | |
| 100 | *devp = currdev; |
| 101 | |
| 102 | *uc_pdata = dev_get_uclass_platdata(*devp); |
| 103 | if (!*uc_pdata) |
| 104 | return failed("get", "regulator", "platdata", -ENXIO); |
| 105 | |
| 106 | if (!allow_type_fixed && (*uc_pdata)->type == REGULATOR_TYPE_FIXED) { |
| 107 | printf("Operation not allowed for fixed regulator!\n"); |
| 108 | return CMD_RET_FAILURE; |
| 109 | } |
| 110 | |
| 111 | return CMD_RET_SUCCESS; |
| 112 | } |
| 113 | |
| 114 | static int do_list(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) |
| 115 | { |
| 116 | int ret; |
| 117 | |
| 118 | printf("|%*s | %*.*s @ %-*.*s| %s @ %s\n", |
| 119 | LIMIT_SEQ, "Seq", |
| 120 | LIMIT_DEVNAME, LIMIT_DEVNAME, "Name", |
| 121 | LIMIT_OFNAME, LIMIT_OFNAME, "fdtname", |
| 122 | "Parent", "uclass"); |
| 123 | |
| 124 | ret = regulator_get(true, 0, NULL); |
| 125 | if (ret) |
| 126 | return CMD_RET_FAILURE; |
| 127 | |
| 128 | return CMD_RET_SUCCESS; |
| 129 | } |
| 130 | |
| 131 | static int constraint(const char *name, int val, const char *val_name) |
| 132 | { |
| 133 | printf("%-*s", LIMIT_INFO, name); |
| 134 | if (val < 0) { |
| 135 | printf(" %s (err: %d)\n", errno_str(val), val); |
| 136 | return val; |
| 137 | } |
| 138 | |
| 139 | if (val_name) |
| 140 | printf(" %d (%s)\n", val, val_name); |
| 141 | else |
| 142 | printf(" %d\n", val); |
| 143 | |
| 144 | return 0; |
| 145 | } |
| 146 | |
| 147 | static const char *get_mode_name(struct dm_regulator_mode *mode, |
| 148 | int mode_count, |
| 149 | int mode_id) |
| 150 | { |
| 151 | while (mode_count--) { |
| 152 | if (mode->id == mode_id) |
| 153 | return mode->name; |
| 154 | mode++; |
| 155 | } |
| 156 | |
| 157 | return NULL; |
| 158 | } |
| 159 | |
| 160 | static int do_info(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) |
| 161 | { |
| 162 | struct udevice *dev; |
| 163 | struct dm_regulator_uclass_platdata *uc_pdata; |
| 164 | struct dm_regulator_mode *modes; |
| 165 | const char *parent_uc; |
| 166 | int mode_count; |
| 167 | int ret; |
| 168 | int i; |
| 169 | |
| 170 | ret = get_curr_dev_and_pl(&dev, &uc_pdata, true); |
| 171 | if (ret) |
| 172 | return ret; |
| 173 | |
| 174 | parent_uc = dev_get_uclass_name(dev->parent); |
| 175 | |
| 176 | printf("Uclass regulator dev %d info:\n", dev->seq); |
| 177 | printf("%-*s %s @ %s\n%-*s %s\n%-*s %s\n%-*s\n", |
| 178 | LIMIT_INFO, "* parent:", dev->parent->name, parent_uc, |
| 179 | LIMIT_INFO, "* dev name:", dev->name, |
| 180 | LIMIT_INFO, "* fdt name:", uc_pdata->name, |
| 181 | LIMIT_INFO, "* constraints:"); |
| 182 | |
| 183 | constraint(" - min uV:", uc_pdata->min_uV, NULL); |
| 184 | constraint(" - max uV:", uc_pdata->max_uV, NULL); |
| 185 | constraint(" - min uA:", uc_pdata->min_uA, NULL); |
| 186 | constraint(" - max uA:", uc_pdata->max_uA, NULL); |
| 187 | constraint(" - always on:", uc_pdata->always_on, |
| 188 | uc_pdata->always_on ? "true" : "false"); |
| 189 | constraint(" - boot on:", uc_pdata->boot_on, |
| 190 | uc_pdata->boot_on ? "true" : "false"); |
| 191 | |
| 192 | mode_count = regulator_mode(dev, &modes); |
| 193 | constraint("* op modes:", mode_count, NULL); |
| 194 | |
| 195 | for (i = 0; i < mode_count; i++, modes++) |
| 196 | constraint(" - mode id:", modes->id, modes->name); |
| 197 | |
| 198 | return CMD_RET_SUCCESS; |
| 199 | } |
| 200 | |
| 201 | static int do_status(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) |
| 202 | { |
| 203 | struct dm_regulator_uclass_platdata *uc_pdata; |
| 204 | int current, value, mode, ret; |
| 205 | const char *mode_name = NULL; |
| 206 | struct udevice *dev; |
| 207 | bool enabled; |
| 208 | |
| 209 | ret = get_curr_dev_and_pl(&dev, &uc_pdata, true); |
| 210 | if (ret) |
| 211 | return ret; |
| 212 | |
| 213 | enabled = regulator_get_enable(dev); |
| 214 | constraint(" * enable:", enabled, enabled ? "true" : "false"); |
| 215 | |
| 216 | value = regulator_get_value(dev); |
| 217 | constraint(" * value uV:", value, NULL); |
| 218 | |
| 219 | current = regulator_get_current(dev); |
| 220 | constraint(" * current uA:", current, NULL); |
| 221 | |
| 222 | mode = regulator_get_mode(dev); |
| 223 | mode_name = get_mode_name(uc_pdata->mode, uc_pdata->mode_count, mode); |
| 224 | constraint(" * mode id:", mode, mode_name); |
| 225 | |
| 226 | return CMD_RET_SUCCESS; |
| 227 | } |
| 228 | |
| 229 | static int do_value(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) |
| 230 | { |
| 231 | struct udevice *dev; |
| 232 | struct dm_regulator_uclass_platdata *uc_pdata; |
| 233 | int value; |
| 234 | int force; |
| 235 | int ret; |
| 236 | |
| 237 | ret = get_curr_dev_and_pl(&dev, &uc_pdata, argc == 1); |
| 238 | if (ret) |
| 239 | return ret; |
| 240 | |
| 241 | if (argc == 1) { |
| 242 | value = regulator_get_value(dev); |
| 243 | if (value < 0) |
| 244 | return failed("get", uc_pdata->name, "voltage", value); |
| 245 | |
| 246 | printf("%d uV\n", value); |
| 247 | return CMD_RET_SUCCESS; |
| 248 | } |
| 249 | |
| 250 | if (argc == 3) |
| 251 | force = !strcmp("-f", argv[2]); |
| 252 | else |
| 253 | force = 0; |
| 254 | |
| 255 | value = simple_strtoul(argv[1], NULL, 0); |
| 256 | if ((value < uc_pdata->min_uV || value > uc_pdata->max_uV) && !force) { |
| 257 | printf("Value exceeds regulator constraint limits\n"); |
| 258 | return CMD_RET_FAILURE; |
| 259 | } |
| 260 | |
| 261 | ret = regulator_set_value(dev, value); |
| 262 | if (ret) |
| 263 | return failed("set", uc_pdata->name, "voltage value", ret); |
| 264 | |
| 265 | return CMD_RET_SUCCESS; |
| 266 | } |
| 267 | |
| 268 | static int do_current(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) |
| 269 | { |
| 270 | struct udevice *dev; |
| 271 | struct dm_regulator_uclass_platdata *uc_pdata; |
| 272 | int current; |
| 273 | int ret; |
| 274 | |
| 275 | ret = get_curr_dev_and_pl(&dev, &uc_pdata, argc == 1); |
| 276 | if (ret) |
| 277 | return ret; |
| 278 | |
| 279 | if (argc == 1) { |
| 280 | current = regulator_get_current(dev); |
| 281 | if (current < 0) |
| 282 | return failed("get", uc_pdata->name, "current", current); |
| 283 | |
| 284 | printf("%d uA\n", current); |
| 285 | return CMD_RET_SUCCESS; |
| 286 | } |
| 287 | |
| 288 | current = simple_strtoul(argv[1], NULL, 0); |
| 289 | if (current < uc_pdata->min_uA || current > uc_pdata->max_uA) { |
| 290 | printf("Current exceeds regulator constraint limits\n"); |
| 291 | return CMD_RET_FAILURE; |
| 292 | } |
| 293 | |
| 294 | ret = regulator_set_current(dev, current); |
| 295 | if (ret) |
| 296 | return failed("set", uc_pdata->name, "current value", ret); |
| 297 | |
| 298 | return CMD_RET_SUCCESS; |
| 299 | } |
| 300 | |
| 301 | static int do_mode(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) |
| 302 | { |
| 303 | struct udevice *dev; |
| 304 | struct dm_regulator_uclass_platdata *uc_pdata; |
| 305 | int new_mode; |
| 306 | int mode; |
| 307 | int ret; |
| 308 | |
| 309 | ret = get_curr_dev_and_pl(&dev, &uc_pdata, false); |
| 310 | if (ret) |
| 311 | return ret; |
| 312 | |
| 313 | if (argc == 1) { |
| 314 | mode = regulator_get_mode(dev); |
| 315 | if (mode < 0) |
| 316 | return failed("get", uc_pdata->name, "mode", mode); |
| 317 | |
| 318 | printf("mode id: %d\n", mode); |
| 319 | return CMD_RET_SUCCESS; |
| 320 | } |
| 321 | |
| 322 | new_mode = simple_strtoul(argv[1], NULL, 0); |
| 323 | |
| 324 | ret = regulator_set_mode(dev, new_mode); |
| 325 | if (ret) |
| 326 | return failed("set", uc_pdata->name, "mode", ret); |
| 327 | |
| 328 | return CMD_RET_SUCCESS; |
| 329 | } |
| 330 | |
| 331 | static int do_enable(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) |
| 332 | { |
| 333 | struct udevice *dev; |
| 334 | struct dm_regulator_uclass_platdata *uc_pdata; |
| 335 | int ret; |
| 336 | |
| 337 | ret = get_curr_dev_and_pl(&dev, &uc_pdata, true); |
| 338 | if (ret) |
| 339 | return ret; |
| 340 | |
| 341 | ret = regulator_set_enable(dev, true); |
| 342 | if (ret) |
| 343 | return failed("enable", "regulator", uc_pdata->name, ret); |
| 344 | |
| 345 | return CMD_RET_SUCCESS; |
| 346 | } |
| 347 | |
| 348 | static int do_disable(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) |
| 349 | { |
| 350 | struct udevice *dev; |
| 351 | struct dm_regulator_uclass_platdata *uc_pdata; |
| 352 | int ret; |
| 353 | |
| 354 | ret = get_curr_dev_and_pl(&dev, &uc_pdata, true); |
| 355 | if (ret) |
| 356 | return ret; |
| 357 | |
| 358 | ret = regulator_set_enable(dev, false); |
| 359 | if (ret) |
| 360 | return failed("disable", "regulator", uc_pdata->name, ret); |
| 361 | |
| 362 | return CMD_RET_SUCCESS; |
| 363 | } |
| 364 | |
| 365 | static cmd_tbl_t subcmd[] = { |
| 366 | U_BOOT_CMD_MKENT(dev, 2, 1, do_dev, "", ""), |
| 367 | U_BOOT_CMD_MKENT(list, 1, 1, do_list, "", ""), |
| 368 | U_BOOT_CMD_MKENT(info, 2, 1, do_info, "", ""), |
| 369 | U_BOOT_CMD_MKENT(status, 2, 1, do_status, "", ""), |
| 370 | U_BOOT_CMD_MKENT(value, 3, 1, do_value, "", ""), |
| 371 | U_BOOT_CMD_MKENT(current, 3, 1, do_current, "", ""), |
| 372 | U_BOOT_CMD_MKENT(mode, 2, 1, do_mode, "", ""), |
| 373 | U_BOOT_CMD_MKENT(enable, 1, 1, do_enable, "", ""), |
| 374 | U_BOOT_CMD_MKENT(disable, 1, 1, do_disable, "", ""), |
| 375 | }; |
| 376 | |
| 377 | static int do_regulator(cmd_tbl_t *cmdtp, int flag, int argc, |
| 378 | char * const argv[]) |
| 379 | { |
| 380 | cmd_tbl_t *cmd; |
| 381 | |
| 382 | argc--; |
| 383 | argv++; |
| 384 | |
| 385 | cmd = find_cmd_tbl(argv[0], subcmd, ARRAY_SIZE(subcmd)); |
| 386 | if (cmd == NULL || argc > cmd->maxargs) |
| 387 | return CMD_RET_USAGE; |
| 388 | |
| 389 | return cmd->cmd(cmdtp, flag, argc, argv); |
| 390 | } |
| 391 | |
| 392 | U_BOOT_CMD(regulator, CONFIG_SYS_MAXARGS, 1, do_regulator, |
| 393 | "uclass operations", |
| 394 | "list - list UCLASS regulator devices\n" |
| 395 | "regulator dev [id] - show or [set] operating regulator device\n" |
| 396 | "regulator [info] - print constraints info\n" |
| 397 | "regulator [status] - print operating status\n" |
| 398 | "regulator [value] [-f] - print/[set] voltage value [uV] (force)\n" |
| 399 | "regulator [current] - print/[set] current value [uA]\n" |
| 400 | "regulator [mode_id] - print/[set] operating mode id\n" |
| 401 | "regulator [enable] - enable the regulator output\n" |
| 402 | "regulator [disable] - disable the regulator output\n" |
| 403 | ); |