Wai Yew CHAY | 8cc7236 | 2009-05-14 08:05:58 +0200 | [diff] [blame] | 1 | /** |
| 2 | * Copyright (C) 2008, Creative Technology Ltd. All Rights Reserved. |
| 3 | * |
| 4 | * This source file is released under GPL v2 license (no other versions). |
| 5 | * See the COPYING file included in the main directory of this source |
| 6 | * distribution for the license terms and conditions. |
| 7 | * |
| 8 | * @File ctamixer.c |
| 9 | * |
| 10 | * @Brief |
| 11 | * This file contains the implementation of the Audio Mixer |
| 12 | * resource management object. |
| 13 | * |
| 14 | * @Author Liu Chun |
| 15 | * @Date May 21 2008 |
| 16 | * |
| 17 | */ |
| 18 | |
| 19 | #include "ctamixer.h" |
| 20 | #include "cthardware.h" |
| 21 | #include <linux/slab.h> |
| 22 | |
| 23 | #define AMIXER_RESOURCE_NUM 256 |
| 24 | #define SUM_RESOURCE_NUM 256 |
| 25 | |
| 26 | #define AMIXER_Y_IMMEDIATE 1 |
| 27 | |
| 28 | #define BLANK_SLOT 4094 |
| 29 | |
| 30 | static int amixer_master(struct rsc *rsc) |
| 31 | { |
| 32 | rsc->conj = 0; |
| 33 | return rsc->idx = container_of(rsc, struct amixer, rsc)->idx[0]; |
| 34 | } |
| 35 | |
| 36 | static int amixer_next_conj(struct rsc *rsc) |
| 37 | { |
| 38 | rsc->conj++; |
| 39 | return container_of(rsc, struct amixer, rsc)->idx[rsc->conj]; |
| 40 | } |
| 41 | |
| 42 | static int amixer_index(const struct rsc *rsc) |
| 43 | { |
| 44 | return container_of(rsc, struct amixer, rsc)->idx[rsc->conj]; |
| 45 | } |
| 46 | |
| 47 | static int amixer_output_slot(const struct rsc *rsc) |
| 48 | { |
| 49 | return (amixer_index(rsc) << 4) + 0x4; |
| 50 | } |
| 51 | |
| 52 | static struct rsc_ops amixer_basic_rsc_ops = { |
| 53 | .master = amixer_master, |
| 54 | .next_conj = amixer_next_conj, |
| 55 | .index = amixer_index, |
| 56 | .output_slot = amixer_output_slot, |
| 57 | }; |
| 58 | |
| 59 | static int amixer_set_input(struct amixer *amixer, struct rsc *rsc) |
| 60 | { |
Takashi Iwai | 514eef9 | 2009-06-08 14:57:57 +0200 | [diff] [blame] | 61 | struct hw *hw; |
Wai Yew CHAY | 8cc7236 | 2009-05-14 08:05:58 +0200 | [diff] [blame] | 62 | |
Takashi Iwai | 514eef9 | 2009-06-08 14:57:57 +0200 | [diff] [blame] | 63 | hw = amixer->rsc.hw; |
Wai Yew CHAY | 8cc7236 | 2009-05-14 08:05:58 +0200 | [diff] [blame] | 64 | hw->amixer_set_mode(amixer->rsc.ctrl_blk, AMIXER_Y_IMMEDIATE); |
| 65 | amixer->input = rsc; |
| 66 | if (NULL == rsc) |
| 67 | hw->amixer_set_x(amixer->rsc.ctrl_blk, BLANK_SLOT); |
| 68 | else |
| 69 | hw->amixer_set_x(amixer->rsc.ctrl_blk, |
| 70 | rsc->ops->output_slot(rsc)); |
| 71 | |
| 72 | return 0; |
| 73 | } |
| 74 | |
| 75 | /* y is a 14-bit immediate constant */ |
| 76 | static int amixer_set_y(struct amixer *amixer, unsigned int y) |
| 77 | { |
Takashi Iwai | 514eef9 | 2009-06-08 14:57:57 +0200 | [diff] [blame] | 78 | struct hw *hw; |
Wai Yew CHAY | 8cc7236 | 2009-05-14 08:05:58 +0200 | [diff] [blame] | 79 | |
Takashi Iwai | 514eef9 | 2009-06-08 14:57:57 +0200 | [diff] [blame] | 80 | hw = amixer->rsc.hw; |
Wai Yew CHAY | 8cc7236 | 2009-05-14 08:05:58 +0200 | [diff] [blame] | 81 | hw->amixer_set_y(amixer->rsc.ctrl_blk, y); |
| 82 | |
| 83 | return 0; |
| 84 | } |
| 85 | |
| 86 | static int amixer_set_invalid_squash(struct amixer *amixer, unsigned int iv) |
| 87 | { |
Takashi Iwai | 514eef9 | 2009-06-08 14:57:57 +0200 | [diff] [blame] | 88 | struct hw *hw; |
Wai Yew CHAY | 8cc7236 | 2009-05-14 08:05:58 +0200 | [diff] [blame] | 89 | |
Takashi Iwai | 514eef9 | 2009-06-08 14:57:57 +0200 | [diff] [blame] | 90 | hw = amixer->rsc.hw; |
Wai Yew CHAY | 8cc7236 | 2009-05-14 08:05:58 +0200 | [diff] [blame] | 91 | hw->amixer_set_iv(amixer->rsc.ctrl_blk, iv); |
| 92 | |
| 93 | return 0; |
| 94 | } |
| 95 | |
| 96 | static int amixer_set_sum(struct amixer *amixer, struct sum *sum) |
| 97 | { |
Takashi Iwai | 514eef9 | 2009-06-08 14:57:57 +0200 | [diff] [blame] | 98 | struct hw *hw; |
Wai Yew CHAY | 8cc7236 | 2009-05-14 08:05:58 +0200 | [diff] [blame] | 99 | |
Takashi Iwai | 514eef9 | 2009-06-08 14:57:57 +0200 | [diff] [blame] | 100 | hw = amixer->rsc.hw; |
Wai Yew CHAY | 8cc7236 | 2009-05-14 08:05:58 +0200 | [diff] [blame] | 101 | amixer->sum = sum; |
| 102 | if (NULL == sum) { |
| 103 | hw->amixer_set_se(amixer->rsc.ctrl_blk, 0); |
| 104 | } else { |
| 105 | hw->amixer_set_se(amixer->rsc.ctrl_blk, 1); |
| 106 | hw->amixer_set_sadr(amixer->rsc.ctrl_blk, |
| 107 | sum->rsc.ops->index(&sum->rsc)); |
| 108 | } |
| 109 | |
| 110 | return 0; |
| 111 | } |
| 112 | |
| 113 | static int amixer_commit_write(struct amixer *amixer) |
| 114 | { |
Takashi Iwai | 514eef9 | 2009-06-08 14:57:57 +0200 | [diff] [blame] | 115 | struct hw *hw; |
| 116 | unsigned int index; |
| 117 | int i; |
| 118 | struct rsc *input; |
| 119 | struct sum *sum; |
Wai Yew CHAY | 8cc7236 | 2009-05-14 08:05:58 +0200 | [diff] [blame] | 120 | |
Takashi Iwai | 514eef9 | 2009-06-08 14:57:57 +0200 | [diff] [blame] | 121 | hw = amixer->rsc.hw; |
Wai Yew CHAY | 8cc7236 | 2009-05-14 08:05:58 +0200 | [diff] [blame] | 122 | input = amixer->input; |
| 123 | sum = amixer->sum; |
| 124 | |
| 125 | /* Program master and conjugate resources */ |
| 126 | amixer->rsc.ops->master(&amixer->rsc); |
| 127 | if (NULL != input) |
| 128 | input->ops->master(input); |
| 129 | |
| 130 | if (NULL != sum) |
| 131 | sum->rsc.ops->master(&sum->rsc); |
| 132 | |
| 133 | for (i = 0; i < amixer->rsc.msr; i++) { |
| 134 | hw->amixer_set_dirty_all(amixer->rsc.ctrl_blk); |
| 135 | if (NULL != input) { |
| 136 | hw->amixer_set_x(amixer->rsc.ctrl_blk, |
| 137 | input->ops->output_slot(input)); |
| 138 | input->ops->next_conj(input); |
| 139 | } |
| 140 | if (NULL != sum) { |
| 141 | hw->amixer_set_sadr(amixer->rsc.ctrl_blk, |
| 142 | sum->rsc.ops->index(&sum->rsc)); |
| 143 | sum->rsc.ops->next_conj(&sum->rsc); |
| 144 | } |
| 145 | index = amixer->rsc.ops->output_slot(&amixer->rsc); |
| 146 | hw->amixer_commit_write(hw, index, amixer->rsc.ctrl_blk); |
| 147 | amixer->rsc.ops->next_conj(&amixer->rsc); |
| 148 | } |
| 149 | amixer->rsc.ops->master(&amixer->rsc); |
| 150 | if (NULL != input) |
| 151 | input->ops->master(input); |
| 152 | |
| 153 | if (NULL != sum) |
| 154 | sum->rsc.ops->master(&sum->rsc); |
| 155 | |
| 156 | return 0; |
| 157 | } |
| 158 | |
| 159 | static int amixer_commit_raw_write(struct amixer *amixer) |
| 160 | { |
Takashi Iwai | 514eef9 | 2009-06-08 14:57:57 +0200 | [diff] [blame] | 161 | struct hw *hw; |
| 162 | unsigned int index; |
Wai Yew CHAY | 8cc7236 | 2009-05-14 08:05:58 +0200 | [diff] [blame] | 163 | |
Takashi Iwai | 514eef9 | 2009-06-08 14:57:57 +0200 | [diff] [blame] | 164 | hw = amixer->rsc.hw; |
Wai Yew CHAY | 8cc7236 | 2009-05-14 08:05:58 +0200 | [diff] [blame] | 165 | index = amixer->rsc.ops->output_slot(&amixer->rsc); |
| 166 | hw->amixer_commit_write(hw, index, amixer->rsc.ctrl_blk); |
| 167 | |
| 168 | return 0; |
| 169 | } |
| 170 | |
| 171 | static int amixer_get_y(struct amixer *amixer) |
| 172 | { |
Takashi Iwai | 514eef9 | 2009-06-08 14:57:57 +0200 | [diff] [blame] | 173 | struct hw *hw; |
Wai Yew CHAY | 8cc7236 | 2009-05-14 08:05:58 +0200 | [diff] [blame] | 174 | |
Takashi Iwai | 514eef9 | 2009-06-08 14:57:57 +0200 | [diff] [blame] | 175 | hw = amixer->rsc.hw; |
Wai Yew CHAY | 8cc7236 | 2009-05-14 08:05:58 +0200 | [diff] [blame] | 176 | return hw->amixer_get_y(amixer->rsc.ctrl_blk); |
| 177 | } |
| 178 | |
| 179 | static int amixer_setup(struct amixer *amixer, struct rsc *input, |
| 180 | unsigned int scale, struct sum *sum) |
| 181 | { |
| 182 | amixer_set_input(amixer, input); |
| 183 | amixer_set_y(amixer, scale); |
| 184 | amixer_set_sum(amixer, sum); |
| 185 | amixer_commit_write(amixer); |
| 186 | return 0; |
| 187 | } |
| 188 | |
| 189 | static struct amixer_rsc_ops amixer_ops = { |
| 190 | .set_input = amixer_set_input, |
| 191 | .set_invalid_squash = amixer_set_invalid_squash, |
| 192 | .set_scale = amixer_set_y, |
| 193 | .set_sum = amixer_set_sum, |
| 194 | .commit_write = amixer_commit_write, |
| 195 | .commit_raw_write = amixer_commit_raw_write, |
| 196 | .setup = amixer_setup, |
| 197 | .get_scale = amixer_get_y, |
| 198 | }; |
| 199 | |
| 200 | static int amixer_rsc_init(struct amixer *amixer, |
| 201 | const struct amixer_desc *desc, |
| 202 | struct amixer_mgr *mgr) |
| 203 | { |
Takashi Iwai | 514eef9 | 2009-06-08 14:57:57 +0200 | [diff] [blame] | 204 | int err; |
Wai Yew CHAY | 8cc7236 | 2009-05-14 08:05:58 +0200 | [diff] [blame] | 205 | |
| 206 | err = rsc_init(&amixer->rsc, amixer->idx[0], |
| 207 | AMIXER, desc->msr, mgr->mgr.hw); |
| 208 | if (err) |
| 209 | return err; |
| 210 | |
| 211 | /* Set amixer specific operations */ |
| 212 | amixer->rsc.ops = &amixer_basic_rsc_ops; |
| 213 | amixer->ops = &amixer_ops; |
| 214 | amixer->input = NULL; |
| 215 | amixer->sum = NULL; |
| 216 | |
| 217 | amixer_setup(amixer, NULL, 0, NULL); |
| 218 | |
| 219 | return 0; |
| 220 | } |
| 221 | |
| 222 | static int amixer_rsc_uninit(struct amixer *amixer) |
| 223 | { |
| 224 | amixer_setup(amixer, NULL, 0, NULL); |
| 225 | rsc_uninit(&amixer->rsc); |
| 226 | amixer->ops = NULL; |
| 227 | amixer->input = NULL; |
| 228 | amixer->sum = NULL; |
| 229 | return 0; |
| 230 | } |
| 231 | |
| 232 | static int get_amixer_rsc(struct amixer_mgr *mgr, |
| 233 | const struct amixer_desc *desc, |
| 234 | struct amixer **ramixer) |
| 235 | { |
Takashi Iwai | 514eef9 | 2009-06-08 14:57:57 +0200 | [diff] [blame] | 236 | int err, i; |
| 237 | unsigned int idx; |
| 238 | struct amixer *amixer; |
Wai Yew CHAY | 8cc7236 | 2009-05-14 08:05:58 +0200 | [diff] [blame] | 239 | unsigned long flags; |
| 240 | |
| 241 | *ramixer = NULL; |
| 242 | |
| 243 | /* Allocate mem for amixer resource */ |
| 244 | amixer = kzalloc(sizeof(*amixer), GFP_KERNEL); |
| 245 | if (NULL == amixer) { |
| 246 | err = -ENOMEM; |
| 247 | return err; |
| 248 | } |
| 249 | |
| 250 | /* Check whether there are sufficient |
| 251 | * amixer resources to meet request. */ |
| 252 | spin_lock_irqsave(&mgr->mgr_lock, flags); |
| 253 | for (i = 0; i < desc->msr; i++) { |
| 254 | err = mgr_get_resource(&mgr->mgr, 1, &idx); |
| 255 | if (err) |
| 256 | break; |
| 257 | |
| 258 | amixer->idx[i] = idx; |
| 259 | } |
| 260 | spin_unlock_irqrestore(&mgr->mgr_lock, flags); |
| 261 | if (err) { |
Takashi Iwai | b3e0afe | 2009-05-14 15:19:30 +0200 | [diff] [blame] | 262 | printk(KERN_ERR "ctxfi: Can't meet AMIXER resource request!\n"); |
Wai Yew CHAY | 8cc7236 | 2009-05-14 08:05:58 +0200 | [diff] [blame] | 263 | goto error; |
| 264 | } |
| 265 | |
| 266 | err = amixer_rsc_init(amixer, desc, mgr); |
| 267 | if (err) |
| 268 | goto error; |
| 269 | |
| 270 | *ramixer = amixer; |
| 271 | |
| 272 | return 0; |
| 273 | |
| 274 | error: |
| 275 | spin_lock_irqsave(&mgr->mgr_lock, flags); |
| 276 | for (i--; i >= 0; i--) |
| 277 | mgr_put_resource(&mgr->mgr, 1, amixer->idx[i]); |
| 278 | |
| 279 | spin_unlock_irqrestore(&mgr->mgr_lock, flags); |
| 280 | kfree(amixer); |
| 281 | return err; |
| 282 | } |
| 283 | |
| 284 | static int put_amixer_rsc(struct amixer_mgr *mgr, struct amixer *amixer) |
| 285 | { |
| 286 | unsigned long flags; |
Takashi Iwai | 514eef9 | 2009-06-08 14:57:57 +0200 | [diff] [blame] | 287 | int i; |
Wai Yew CHAY | 8cc7236 | 2009-05-14 08:05:58 +0200 | [diff] [blame] | 288 | |
| 289 | spin_lock_irqsave(&mgr->mgr_lock, flags); |
| 290 | for (i = 0; i < amixer->rsc.msr; i++) |
| 291 | mgr_put_resource(&mgr->mgr, 1, amixer->idx[i]); |
| 292 | |
| 293 | spin_unlock_irqrestore(&mgr->mgr_lock, flags); |
| 294 | amixer_rsc_uninit(amixer); |
| 295 | kfree(amixer); |
| 296 | |
| 297 | return 0; |
| 298 | } |
| 299 | |
| 300 | int amixer_mgr_create(void *hw, struct amixer_mgr **ramixer_mgr) |
| 301 | { |
Takashi Iwai | 514eef9 | 2009-06-08 14:57:57 +0200 | [diff] [blame] | 302 | int err; |
Wai Yew CHAY | 8cc7236 | 2009-05-14 08:05:58 +0200 | [diff] [blame] | 303 | struct amixer_mgr *amixer_mgr; |
| 304 | |
| 305 | *ramixer_mgr = NULL; |
| 306 | amixer_mgr = kzalloc(sizeof(*amixer_mgr), GFP_KERNEL); |
| 307 | if (NULL == amixer_mgr) |
| 308 | return -ENOMEM; |
| 309 | |
| 310 | err = rsc_mgr_init(&amixer_mgr->mgr, AMIXER, AMIXER_RESOURCE_NUM, hw); |
| 311 | if (err) |
| 312 | goto error; |
| 313 | |
| 314 | spin_lock_init(&amixer_mgr->mgr_lock); |
| 315 | |
| 316 | amixer_mgr->get_amixer = get_amixer_rsc; |
| 317 | amixer_mgr->put_amixer = put_amixer_rsc; |
| 318 | |
| 319 | *ramixer_mgr = amixer_mgr; |
| 320 | |
| 321 | return 0; |
| 322 | |
| 323 | error: |
| 324 | kfree(amixer_mgr); |
| 325 | return err; |
| 326 | } |
| 327 | |
| 328 | int amixer_mgr_destroy(struct amixer_mgr *amixer_mgr) |
| 329 | { |
| 330 | rsc_mgr_uninit(&amixer_mgr->mgr); |
| 331 | kfree(amixer_mgr); |
| 332 | return 0; |
| 333 | } |
| 334 | |
| 335 | /* SUM resource management */ |
| 336 | |
| 337 | static int sum_master(struct rsc *rsc) |
| 338 | { |
| 339 | rsc->conj = 0; |
| 340 | return rsc->idx = container_of(rsc, struct sum, rsc)->idx[0]; |
| 341 | } |
| 342 | |
| 343 | static int sum_next_conj(struct rsc *rsc) |
| 344 | { |
| 345 | rsc->conj++; |
| 346 | return container_of(rsc, struct sum, rsc)->idx[rsc->conj]; |
| 347 | } |
| 348 | |
| 349 | static int sum_index(const struct rsc *rsc) |
| 350 | { |
| 351 | return container_of(rsc, struct sum, rsc)->idx[rsc->conj]; |
| 352 | } |
| 353 | |
| 354 | static int sum_output_slot(const struct rsc *rsc) |
| 355 | { |
| 356 | return (sum_index(rsc) << 4) + 0xc; |
| 357 | } |
| 358 | |
| 359 | static struct rsc_ops sum_basic_rsc_ops = { |
| 360 | .master = sum_master, |
| 361 | .next_conj = sum_next_conj, |
| 362 | .index = sum_index, |
| 363 | .output_slot = sum_output_slot, |
| 364 | }; |
| 365 | |
| 366 | static int sum_rsc_init(struct sum *sum, |
| 367 | const struct sum_desc *desc, |
| 368 | struct sum_mgr *mgr) |
| 369 | { |
Takashi Iwai | 514eef9 | 2009-06-08 14:57:57 +0200 | [diff] [blame] | 370 | int err; |
Wai Yew CHAY | 8cc7236 | 2009-05-14 08:05:58 +0200 | [diff] [blame] | 371 | |
| 372 | err = rsc_init(&sum->rsc, sum->idx[0], SUM, desc->msr, mgr->mgr.hw); |
| 373 | if (err) |
| 374 | return err; |
| 375 | |
| 376 | sum->rsc.ops = &sum_basic_rsc_ops; |
| 377 | |
| 378 | return 0; |
| 379 | } |
| 380 | |
| 381 | static int sum_rsc_uninit(struct sum *sum) |
| 382 | { |
| 383 | rsc_uninit(&sum->rsc); |
| 384 | return 0; |
| 385 | } |
| 386 | |
| 387 | static int get_sum_rsc(struct sum_mgr *mgr, |
| 388 | const struct sum_desc *desc, |
| 389 | struct sum **rsum) |
| 390 | { |
Takashi Iwai | 514eef9 | 2009-06-08 14:57:57 +0200 | [diff] [blame] | 391 | int err, i; |
| 392 | unsigned int idx; |
| 393 | struct sum *sum; |
Wai Yew CHAY | 8cc7236 | 2009-05-14 08:05:58 +0200 | [diff] [blame] | 394 | unsigned long flags; |
| 395 | |
| 396 | *rsum = NULL; |
| 397 | |
| 398 | /* Allocate mem for sum resource */ |
| 399 | sum = kzalloc(sizeof(*sum), GFP_KERNEL); |
| 400 | if (NULL == sum) { |
| 401 | err = -ENOMEM; |
| 402 | return err; |
| 403 | } |
| 404 | |
| 405 | /* Check whether there are sufficient sum resources to meet request. */ |
| 406 | spin_lock_irqsave(&mgr->mgr_lock, flags); |
| 407 | for (i = 0; i < desc->msr; i++) { |
| 408 | err = mgr_get_resource(&mgr->mgr, 1, &idx); |
| 409 | if (err) |
| 410 | break; |
| 411 | |
| 412 | sum->idx[i] = idx; |
| 413 | } |
| 414 | spin_unlock_irqrestore(&mgr->mgr_lock, flags); |
| 415 | if (err) { |
Takashi Iwai | b3e0afe | 2009-05-14 15:19:30 +0200 | [diff] [blame] | 416 | printk(KERN_ERR "ctxfi: Can't meet SUM resource request!\n"); |
Wai Yew CHAY | 8cc7236 | 2009-05-14 08:05:58 +0200 | [diff] [blame] | 417 | goto error; |
| 418 | } |
| 419 | |
| 420 | err = sum_rsc_init(sum, desc, mgr); |
| 421 | if (err) |
| 422 | goto error; |
| 423 | |
| 424 | *rsum = sum; |
| 425 | |
| 426 | return 0; |
| 427 | |
| 428 | error: |
| 429 | spin_lock_irqsave(&mgr->mgr_lock, flags); |
| 430 | for (i--; i >= 0; i--) |
| 431 | mgr_put_resource(&mgr->mgr, 1, sum->idx[i]); |
| 432 | |
| 433 | spin_unlock_irqrestore(&mgr->mgr_lock, flags); |
| 434 | kfree(sum); |
| 435 | return err; |
| 436 | } |
| 437 | |
| 438 | static int put_sum_rsc(struct sum_mgr *mgr, struct sum *sum) |
| 439 | { |
| 440 | unsigned long flags; |
Takashi Iwai | 514eef9 | 2009-06-08 14:57:57 +0200 | [diff] [blame] | 441 | int i; |
Wai Yew CHAY | 8cc7236 | 2009-05-14 08:05:58 +0200 | [diff] [blame] | 442 | |
| 443 | spin_lock_irqsave(&mgr->mgr_lock, flags); |
| 444 | for (i = 0; i < sum->rsc.msr; i++) |
| 445 | mgr_put_resource(&mgr->mgr, 1, sum->idx[i]); |
| 446 | |
| 447 | spin_unlock_irqrestore(&mgr->mgr_lock, flags); |
| 448 | sum_rsc_uninit(sum); |
| 449 | kfree(sum); |
| 450 | |
| 451 | return 0; |
| 452 | } |
| 453 | |
| 454 | int sum_mgr_create(void *hw, struct sum_mgr **rsum_mgr) |
| 455 | { |
Takashi Iwai | 514eef9 | 2009-06-08 14:57:57 +0200 | [diff] [blame] | 456 | int err; |
Wai Yew CHAY | 8cc7236 | 2009-05-14 08:05:58 +0200 | [diff] [blame] | 457 | struct sum_mgr *sum_mgr; |
| 458 | |
| 459 | *rsum_mgr = NULL; |
| 460 | sum_mgr = kzalloc(sizeof(*sum_mgr), GFP_KERNEL); |
| 461 | if (NULL == sum_mgr) |
| 462 | return -ENOMEM; |
| 463 | |
| 464 | err = rsc_mgr_init(&sum_mgr->mgr, SUM, SUM_RESOURCE_NUM, hw); |
| 465 | if (err) |
| 466 | goto error; |
| 467 | |
| 468 | spin_lock_init(&sum_mgr->mgr_lock); |
| 469 | |
| 470 | sum_mgr->get_sum = get_sum_rsc; |
| 471 | sum_mgr->put_sum = put_sum_rsc; |
| 472 | |
| 473 | *rsum_mgr = sum_mgr; |
| 474 | |
| 475 | return 0; |
| 476 | |
| 477 | error: |
| 478 | kfree(sum_mgr); |
| 479 | return err; |
| 480 | } |
| 481 | |
| 482 | int sum_mgr_destroy(struct sum_mgr *sum_mgr) |
| 483 | { |
| 484 | rsc_mgr_uninit(&sum_mgr->mgr); |
| 485 | kfree(sum_mgr); |
| 486 | return 0; |
| 487 | } |
| 488 | |