1 /* 2 * Copyright (c) 2016, Linaro Limited 3 * Copyright (c) 2014, The Linux Foundation. All rights reserved. 4 * 5 * This software is licensed under the terms of the GNU General Public 6 * License version 2, as published by the Free Software Foundation, and 7 * may be copied, distributed, and modified under those terms. 8 * 9 * This program is distributed in the hope that it will be useful, 10 * but WITHOUT ANY WARRANTY; without even the implied warranty of 11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 12 * GNU General Public License for more details. 13 */ 14 15 #include <linux/clk-provider.h> 16 #include <linux/err.h> 17 #include <linux/export.h> 18 #include <linux/init.h> 19 #include <linux/kernel.h> 20 #include <linux/module.h> 21 #include <linux/mutex.h> 22 #include <linux/of.h> 23 #include <linux/of_device.h> 24 #include <linux/platform_device.h> 25 #include <linux/soc/qcom/smd-rpm.h> 26 27 #include <dt-bindings/clock/qcom,rpmcc.h> 28 #include <dt-bindings/mfd/qcom-rpm.h> 29 30 #define QCOM_RPM_KEY_SOFTWARE_ENABLE 0x6e657773 31 #define QCOM_RPM_KEY_PIN_CTRL_CLK_BUFFER_ENABLE_KEY 0x62636370 32 #define QCOM_RPM_SMD_KEY_RATE 0x007a484b 33 #define QCOM_RPM_SMD_KEY_ENABLE 0x62616e45 34 #define QCOM_RPM_SMD_KEY_STATE 0x54415453 35 #define QCOM_RPM_SCALING_ENABLE_ID 0x2 36 37 #define __DEFINE_CLK_SMD_RPM(_platform, _name, _active, type, r_id, stat_id, \ 38 key) \ 39 static struct clk_smd_rpm _platform##_##_active; \ 40 static struct clk_smd_rpm _platform##_##_name = { \ 41 .rpm_res_type = (type), \ 42 .rpm_clk_id = (r_id), \ 43 .rpm_status_id = (stat_id), \ 44 .rpm_key = (key), \ 45 .peer = &_platform##_##_active, \ 46 .rate = INT_MAX, \ 47 .hw.init = &(struct clk_init_data){ \ 48 .ops = &clk_smd_rpm_ops, \ 49 .name = #_name, \ 50 .parent_names = (const char *[]){ "xo_board" }, \ 51 .num_parents = 1, \ 52 }, \ 53 }; \ 54 static struct clk_smd_rpm _platform##_##_active = { \ 55 .rpm_res_type = (type), \ 56 .rpm_clk_id = (r_id), \ 57 .rpm_status_id = (stat_id), \ 58 .active_only = true, \ 59 .rpm_key = (key), \ 60 .peer = &_platform##_##_name, \ 61 .rate = INT_MAX, \ 62 .hw.init = &(struct clk_init_data){ \ 63 .ops = &clk_smd_rpm_ops, \ 64 .name = #_active, \ 65 .parent_names = (const char *[]){ "xo_board" }, \ 66 .num_parents = 1, \ 67 }, \ 68 } 69 70 #define __DEFINE_CLK_SMD_RPM_BRANCH(_platform, _name, _active, type, r_id, \ 71 stat_id, r, key) \ 72 static struct clk_smd_rpm _platform##_##_active; \ 73 static struct clk_smd_rpm _platform##_##_name = { \ 74 .rpm_res_type = (type), \ 75 .rpm_clk_id = (r_id), \ 76 .rpm_status_id = (stat_id), \ 77 .rpm_key = (key), \ 78 .branch = true, \ 79 .peer = &_platform##_##_active, \ 80 .rate = (r), \ 81 .hw.init = &(struct clk_init_data){ \ 82 .ops = &clk_smd_rpm_branch_ops, \ 83 .name = #_name, \ 84 .parent_names = (const char *[]){ "xo_board" }, \ 85 .num_parents = 1, \ 86 }, \ 87 }; \ 88 static struct clk_smd_rpm _platform##_##_active = { \ 89 .rpm_res_type = (type), \ 90 .rpm_clk_id = (r_id), \ 91 .rpm_status_id = (stat_id), \ 92 .active_only = true, \ 93 .rpm_key = (key), \ 94 .branch = true, \ 95 .peer = &_platform##_##_name, \ 96 .rate = (r), \ 97 .hw.init = &(struct clk_init_data){ \ 98 .ops = &clk_smd_rpm_branch_ops, \ 99 .name = #_active, \ 100 .parent_names = (const char *[]){ "xo_board" }, \ 101 .num_parents = 1, \ 102 }, \ 103 } 104 105 #define DEFINE_CLK_SMD_RPM(_platform, _name, _active, type, r_id) \ 106 __DEFINE_CLK_SMD_RPM(_platform, _name, _active, type, r_id, \ 107 0, QCOM_RPM_SMD_KEY_RATE) 108 109 #define DEFINE_CLK_SMD_RPM_BRANCH(_platform, _name, _active, type, r_id, r) \ 110 __DEFINE_CLK_SMD_RPM_BRANCH(_platform, _name, _active, type, \ 111 r_id, 0, r, QCOM_RPM_SMD_KEY_ENABLE) 112 113 #define DEFINE_CLK_SMD_RPM_QDSS(_platform, _name, _active, type, r_id) \ 114 __DEFINE_CLK_SMD_RPM(_platform, _name, _active, type, r_id, \ 115 0, QCOM_RPM_SMD_KEY_STATE) 116 117 #define DEFINE_CLK_SMD_RPM_XO_BUFFER(_platform, _name, _active, r_id) \ 118 __DEFINE_CLK_SMD_RPM_BRANCH(_platform, _name, _active, \ 119 QCOM_SMD_RPM_CLK_BUF_A, r_id, 0, 1000, \ 120 QCOM_RPM_KEY_SOFTWARE_ENABLE) 121 122 #define DEFINE_CLK_SMD_RPM_XO_BUFFER_PINCTRL(_platform, _name, _active, r_id) \ 123 __DEFINE_CLK_SMD_RPM_BRANCH(_platform, _name, _active, \ 124 QCOM_SMD_RPM_CLK_BUF_A, r_id, 0, 1000, \ 125 QCOM_RPM_KEY_PIN_CTRL_CLK_BUFFER_ENABLE_KEY) 126 127 #define to_clk_smd_rpm(_hw) container_of(_hw, struct clk_smd_rpm, hw) 128 129 struct clk_smd_rpm { 130 const int rpm_res_type; 131 const int rpm_key; 132 const int rpm_clk_id; 133 const int rpm_status_id; 134 const bool active_only; 135 bool enabled; 136 bool branch; 137 struct clk_smd_rpm *peer; 138 struct clk_hw hw; 139 unsigned long rate; 140 struct qcom_smd_rpm *rpm; 141 }; 142 143 struct clk_smd_rpm_req { 144 __le32 key; 145 __le32 nbytes; 146 __le32 value; 147 }; 148 149 struct rpm_cc { 150 struct qcom_rpm *rpm; 151 struct clk_smd_rpm **clks; 152 size_t num_clks; 153 }; 154 155 struct rpm_smd_clk_desc { 156 struct clk_smd_rpm **clks; 157 size_t num_clks; 158 }; 159 160 static DEFINE_MUTEX(rpm_smd_clk_lock); 161 162 static int clk_smd_rpm_handoff(struct clk_smd_rpm *r) 163 { 164 int ret; 165 struct clk_smd_rpm_req req = { 166 .key = cpu_to_le32(r->rpm_key), 167 .nbytes = cpu_to_le32(sizeof(u32)), 168 .value = cpu_to_le32(r->branch ? 1 : INT_MAX), 169 }; 170 171 ret = qcom_rpm_smd_write(r->rpm, QCOM_SMD_RPM_ACTIVE_STATE, 172 r->rpm_res_type, r->rpm_clk_id, &req, 173 sizeof(req)); 174 if (ret) 175 return ret; 176 ret = qcom_rpm_smd_write(r->rpm, QCOM_SMD_RPM_SLEEP_STATE, 177 r->rpm_res_type, r->rpm_clk_id, &req, 178 sizeof(req)); 179 if (ret) 180 return ret; 181 182 return 0; 183 } 184 185 static int clk_smd_rpm_set_rate_active(struct clk_smd_rpm *r, 186 unsigned long rate) 187 { 188 struct clk_smd_rpm_req req = { 189 .key = cpu_to_le32(r->rpm_key), 190 .nbytes = cpu_to_le32(sizeof(u32)), 191 .value = cpu_to_le32(DIV_ROUND_UP(rate, 1000)), /* to kHz */ 192 }; 193 194 return qcom_rpm_smd_write(r->rpm, QCOM_SMD_RPM_ACTIVE_STATE, 195 r->rpm_res_type, r->rpm_clk_id, &req, 196 sizeof(req)); 197 } 198 199 static int clk_smd_rpm_set_rate_sleep(struct clk_smd_rpm *r, 200 unsigned long rate) 201 { 202 struct clk_smd_rpm_req req = { 203 .key = cpu_to_le32(r->rpm_key), 204 .nbytes = cpu_to_le32(sizeof(u32)), 205 .value = cpu_to_le32(DIV_ROUND_UP(rate, 1000)), /* to kHz */ 206 }; 207 208 return qcom_rpm_smd_write(r->rpm, QCOM_SMD_RPM_SLEEP_STATE, 209 r->rpm_res_type, r->rpm_clk_id, &req, 210 sizeof(req)); 211 } 212 213 static void to_active_sleep(struct clk_smd_rpm *r, unsigned long rate, 214 unsigned long *active, unsigned long *sleep) 215 { 216 *active = rate; 217 218 /* 219 * Active-only clocks don't care what the rate is during sleep. So, 220 * they vote for zero. 221 */ 222 if (r->active_only) 223 *sleep = 0; 224 else 225 *sleep = *active; 226 } 227 228 static int clk_smd_rpm_prepare(struct clk_hw *hw) 229 { 230 struct clk_smd_rpm *r = to_clk_smd_rpm(hw); 231 struct clk_smd_rpm *peer = r->peer; 232 unsigned long this_rate = 0, this_sleep_rate = 0; 233 unsigned long peer_rate = 0, peer_sleep_rate = 0; 234 unsigned long active_rate, sleep_rate; 235 int ret = 0; 236 237 mutex_lock(&rpm_smd_clk_lock); 238 239 /* Don't send requests to the RPM if the rate has not been set. */ 240 if (!r->rate) 241 goto out; 242 243 to_active_sleep(r, r->rate, &this_rate, &this_sleep_rate); 244 245 /* Take peer clock's rate into account only if it's enabled. */ 246 if (peer->enabled) 247 to_active_sleep(peer, peer->rate, 248 &peer_rate, &peer_sleep_rate); 249 250 active_rate = max(this_rate, peer_rate); 251 252 if (r->branch) 253 active_rate = !!active_rate; 254 255 ret = clk_smd_rpm_set_rate_active(r, active_rate); 256 if (ret) 257 goto out; 258 259 sleep_rate = max(this_sleep_rate, peer_sleep_rate); 260 if (r->branch) 261 sleep_rate = !!sleep_rate; 262 263 ret = clk_smd_rpm_set_rate_sleep(r, sleep_rate); 264 if (ret) 265 /* Undo the active set vote and restore it */ 266 ret = clk_smd_rpm_set_rate_active(r, peer_rate); 267 268 out: 269 if (!ret) 270 r->enabled = true; 271 272 mutex_unlock(&rpm_smd_clk_lock); 273 274 return ret; 275 } 276 277 static void clk_smd_rpm_unprepare(struct clk_hw *hw) 278 { 279 struct clk_smd_rpm *r = to_clk_smd_rpm(hw); 280 struct clk_smd_rpm *peer = r->peer; 281 unsigned long peer_rate = 0, peer_sleep_rate = 0; 282 unsigned long active_rate, sleep_rate; 283 int ret; 284 285 mutex_lock(&rpm_smd_clk_lock); 286 287 if (!r->rate) 288 goto out; 289 290 /* Take peer clock's rate into account only if it's enabled. */ 291 if (peer->enabled) 292 to_active_sleep(peer, peer->rate, &peer_rate, 293 &peer_sleep_rate); 294 295 active_rate = r->branch ? !!peer_rate : peer_rate; 296 ret = clk_smd_rpm_set_rate_active(r, active_rate); 297 if (ret) 298 goto out; 299 300 sleep_rate = r->branch ? !!peer_sleep_rate : peer_sleep_rate; 301 ret = clk_smd_rpm_set_rate_sleep(r, sleep_rate); 302 if (ret) 303 goto out; 304 305 r->enabled = false; 306 307 out: 308 mutex_unlock(&rpm_smd_clk_lock); 309 } 310 311 static int clk_smd_rpm_set_rate(struct clk_hw *hw, unsigned long rate, 312 unsigned long parent_rate) 313 { 314 struct clk_smd_rpm *r = to_clk_smd_rpm(hw); 315 struct clk_smd_rpm *peer = r->peer; 316 unsigned long active_rate, sleep_rate; 317 unsigned long this_rate = 0, this_sleep_rate = 0; 318 unsigned long peer_rate = 0, peer_sleep_rate = 0; 319 int ret = 0; 320 321 mutex_lock(&rpm_smd_clk_lock); 322 323 if (!r->enabled) 324 goto out; 325 326 to_active_sleep(r, rate, &this_rate, &this_sleep_rate); 327 328 /* Take peer clock's rate into account only if it's enabled. */ 329 if (peer->enabled) 330 to_active_sleep(peer, peer->rate, 331 &peer_rate, &peer_sleep_rate); 332 333 active_rate = max(this_rate, peer_rate); 334 ret = clk_smd_rpm_set_rate_active(r, active_rate); 335 if (ret) 336 goto out; 337 338 sleep_rate = max(this_sleep_rate, peer_sleep_rate); 339 ret = clk_smd_rpm_set_rate_sleep(r, sleep_rate); 340 if (ret) 341 goto out; 342 343 r->rate = rate; 344 345 out: 346 mutex_unlock(&rpm_smd_clk_lock); 347 348 return ret; 349 } 350 351 static long clk_smd_rpm_round_rate(struct clk_hw *hw, unsigned long rate, 352 unsigned long *parent_rate) 353 { 354 /* 355 * RPM handles rate rounding and we don't have a way to 356 * know what the rate will be, so just return whatever 357 * rate is requested. 358 */ 359 return rate; 360 } 361 362 static unsigned long clk_smd_rpm_recalc_rate(struct clk_hw *hw, 363 unsigned long parent_rate) 364 { 365 struct clk_smd_rpm *r = to_clk_smd_rpm(hw); 366 367 /* 368 * RPM handles rate rounding and we don't have a way to 369 * know what the rate will be, so just return whatever 370 * rate was set. 371 */ 372 return r->rate; 373 } 374 375 static int clk_smd_rpm_enable_scaling(struct qcom_smd_rpm *rpm) 376 { 377 int ret; 378 struct clk_smd_rpm_req req = { 379 .key = cpu_to_le32(QCOM_RPM_SMD_KEY_ENABLE), 380 .nbytes = cpu_to_le32(sizeof(u32)), 381 .value = cpu_to_le32(1), 382 }; 383 384 ret = qcom_rpm_smd_write(rpm, QCOM_SMD_RPM_SLEEP_STATE, 385 QCOM_SMD_RPM_MISC_CLK, 386 QCOM_RPM_SCALING_ENABLE_ID, &req, sizeof(req)); 387 if (ret) { 388 pr_err("RPM clock scaling (sleep set) not enabled!\n"); 389 return ret; 390 } 391 392 ret = qcom_rpm_smd_write(rpm, QCOM_SMD_RPM_ACTIVE_STATE, 393 QCOM_SMD_RPM_MISC_CLK, 394 QCOM_RPM_SCALING_ENABLE_ID, &req, sizeof(req)); 395 if (ret) { 396 pr_err("RPM clock scaling (active set) not enabled!\n"); 397 return ret; 398 } 399 400 pr_debug("%s: RPM clock scaling is enabled\n", __func__); 401 return 0; 402 } 403 404 static const struct clk_ops clk_smd_rpm_ops = { 405 .prepare = clk_smd_rpm_prepare, 406 .unprepare = clk_smd_rpm_unprepare, 407 .set_rate = clk_smd_rpm_set_rate, 408 .round_rate = clk_smd_rpm_round_rate, 409 .recalc_rate = clk_smd_rpm_recalc_rate, 410 }; 411 412 static const struct clk_ops clk_smd_rpm_branch_ops = { 413 .prepare = clk_smd_rpm_prepare, 414 .unprepare = clk_smd_rpm_unprepare, 415 }; 416 417 /* msm8916 */ 418 DEFINE_CLK_SMD_RPM(msm8916, pcnoc_clk, pcnoc_a_clk, QCOM_SMD_RPM_BUS_CLK, 0); 419 DEFINE_CLK_SMD_RPM(msm8916, snoc_clk, snoc_a_clk, QCOM_SMD_RPM_BUS_CLK, 1); 420 DEFINE_CLK_SMD_RPM(msm8916, bimc_clk, bimc_a_clk, QCOM_SMD_RPM_MEM_CLK, 0); 421 DEFINE_CLK_SMD_RPM_QDSS(msm8916, qdss_clk, qdss_a_clk, QCOM_SMD_RPM_MISC_CLK, 1); 422 DEFINE_CLK_SMD_RPM_XO_BUFFER(msm8916, bb_clk1, bb_clk1_a, 1); 423 DEFINE_CLK_SMD_RPM_XO_BUFFER(msm8916, bb_clk2, bb_clk2_a, 2); 424 DEFINE_CLK_SMD_RPM_XO_BUFFER(msm8916, rf_clk1, rf_clk1_a, 4); 425 DEFINE_CLK_SMD_RPM_XO_BUFFER(msm8916, rf_clk2, rf_clk2_a, 5); 426 DEFINE_CLK_SMD_RPM_XO_BUFFER_PINCTRL(msm8916, bb_clk1_pin, bb_clk1_a_pin, 1); 427 DEFINE_CLK_SMD_RPM_XO_BUFFER_PINCTRL(msm8916, bb_clk2_pin, bb_clk2_a_pin, 2); 428 DEFINE_CLK_SMD_RPM_XO_BUFFER_PINCTRL(msm8916, rf_clk1_pin, rf_clk1_a_pin, 4); 429 DEFINE_CLK_SMD_RPM_XO_BUFFER_PINCTRL(msm8916, rf_clk2_pin, rf_clk2_a_pin, 5); 430 431 static struct clk_smd_rpm *msm8916_clks[] = { 432 [RPM_SMD_PCNOC_CLK] = &msm8916_pcnoc_clk, 433 [RPM_SMD_PCNOC_A_CLK] = &msm8916_pcnoc_a_clk, 434 [RPM_SMD_SNOC_CLK] = &msm8916_snoc_clk, 435 [RPM_SMD_SNOC_A_CLK] = &msm8916_snoc_a_clk, 436 [RPM_SMD_BIMC_CLK] = &msm8916_bimc_clk, 437 [RPM_SMD_BIMC_A_CLK] = &msm8916_bimc_a_clk, 438 [RPM_SMD_QDSS_CLK] = &msm8916_qdss_clk, 439 [RPM_SMD_QDSS_A_CLK] = &msm8916_qdss_a_clk, 440 [RPM_SMD_BB_CLK1] = &msm8916_bb_clk1, 441 [RPM_SMD_BB_CLK1_A] = &msm8916_bb_clk1_a, 442 [RPM_SMD_BB_CLK2] = &msm8916_bb_clk2, 443 [RPM_SMD_BB_CLK2_A] = &msm8916_bb_clk2_a, 444 [RPM_SMD_RF_CLK1] = &msm8916_rf_clk1, 445 [RPM_SMD_RF_CLK1_A] = &msm8916_rf_clk1_a, 446 [RPM_SMD_RF_CLK2] = &msm8916_rf_clk2, 447 [RPM_SMD_RF_CLK2_A] = &msm8916_rf_clk2_a, 448 [RPM_SMD_BB_CLK1_PIN] = &msm8916_bb_clk1_pin, 449 [RPM_SMD_BB_CLK1_A_PIN] = &msm8916_bb_clk1_a_pin, 450 [RPM_SMD_BB_CLK2_PIN] = &msm8916_bb_clk2_pin, 451 [RPM_SMD_BB_CLK2_A_PIN] = &msm8916_bb_clk2_a_pin, 452 [RPM_SMD_RF_CLK1_PIN] = &msm8916_rf_clk1_pin, 453 [RPM_SMD_RF_CLK1_A_PIN] = &msm8916_rf_clk1_a_pin, 454 [RPM_SMD_RF_CLK2_PIN] = &msm8916_rf_clk2_pin, 455 [RPM_SMD_RF_CLK2_A_PIN] = &msm8916_rf_clk2_a_pin, 456 }; 457 458 static const struct rpm_smd_clk_desc rpm_clk_msm8916 = { 459 .clks = msm8916_clks, 460 .num_clks = ARRAY_SIZE(msm8916_clks), 461 }; 462 463 /* msm8974 */ 464 DEFINE_CLK_SMD_RPM(msm8974, pnoc_clk, pnoc_a_clk, QCOM_SMD_RPM_BUS_CLK, 0); 465 DEFINE_CLK_SMD_RPM(msm8974, snoc_clk, snoc_a_clk, QCOM_SMD_RPM_BUS_CLK, 1); 466 DEFINE_CLK_SMD_RPM(msm8974, cnoc_clk, cnoc_a_clk, QCOM_SMD_RPM_BUS_CLK, 2); 467 DEFINE_CLK_SMD_RPM(msm8974, mmssnoc_ahb_clk, mmssnoc_ahb_a_clk, QCOM_SMD_RPM_BUS_CLK, 3); 468 DEFINE_CLK_SMD_RPM(msm8974, bimc_clk, bimc_a_clk, QCOM_SMD_RPM_MEM_CLK, 0); 469 DEFINE_CLK_SMD_RPM(msm8974, gfx3d_clk_src, gfx3d_a_clk_src, QCOM_SMD_RPM_MEM_CLK, 1); 470 DEFINE_CLK_SMD_RPM(msm8974, ocmemgx_clk, ocmemgx_a_clk, QCOM_SMD_RPM_MEM_CLK, 2); 471 DEFINE_CLK_SMD_RPM_QDSS(msm8974, qdss_clk, qdss_a_clk, QCOM_SMD_RPM_MISC_CLK, 1); 472 DEFINE_CLK_SMD_RPM_XO_BUFFER(msm8974, cxo_d0, cxo_d0_a, 1); 473 DEFINE_CLK_SMD_RPM_XO_BUFFER(msm8974, cxo_d1, cxo_d1_a, 2); 474 DEFINE_CLK_SMD_RPM_XO_BUFFER(msm8974, cxo_a0, cxo_a0_a, 4); 475 DEFINE_CLK_SMD_RPM_XO_BUFFER(msm8974, cxo_a1, cxo_a1_a, 5); 476 DEFINE_CLK_SMD_RPM_XO_BUFFER(msm8974, cxo_a2, cxo_a2_a, 6); 477 DEFINE_CLK_SMD_RPM_XO_BUFFER(msm8974, diff_clk, diff_a_clk, 7); 478 DEFINE_CLK_SMD_RPM_XO_BUFFER(msm8974, div_clk1, div_a_clk1, 11); 479 DEFINE_CLK_SMD_RPM_XO_BUFFER(msm8974, div_clk2, div_a_clk2, 12); 480 DEFINE_CLK_SMD_RPM_XO_BUFFER_PINCTRL(msm8974, cxo_d0_pin, cxo_d0_a_pin, 1); 481 DEFINE_CLK_SMD_RPM_XO_BUFFER_PINCTRL(msm8974, cxo_d1_pin, cxo_d1_a_pin, 2); 482 DEFINE_CLK_SMD_RPM_XO_BUFFER_PINCTRL(msm8974, cxo_a0_pin, cxo_a0_a_pin, 4); 483 DEFINE_CLK_SMD_RPM_XO_BUFFER_PINCTRL(msm8974, cxo_a1_pin, cxo_a1_a_pin, 5); 484 DEFINE_CLK_SMD_RPM_XO_BUFFER_PINCTRL(msm8974, cxo_a2_pin, cxo_a2_a_pin, 6); 485 486 static struct clk_smd_rpm *msm8974_clks[] = { 487 [RPM_SMD_PNOC_CLK] = &msm8974_pnoc_clk, 488 [RPM_SMD_PNOC_A_CLK] = &msm8974_pnoc_a_clk, 489 [RPM_SMD_SNOC_CLK] = &msm8974_snoc_clk, 490 [RPM_SMD_SNOC_A_CLK] = &msm8974_snoc_a_clk, 491 [RPM_SMD_CNOC_CLK] = &msm8974_cnoc_clk, 492 [RPM_SMD_CNOC_A_CLK] = &msm8974_cnoc_a_clk, 493 [RPM_SMD_MMSSNOC_AHB_CLK] = &msm8974_mmssnoc_ahb_clk, 494 [RPM_SMD_MMSSNOC_AHB_A_CLK] = &msm8974_mmssnoc_ahb_a_clk, 495 [RPM_SMD_BIMC_CLK] = &msm8974_bimc_clk, 496 [RPM_SMD_BIMC_A_CLK] = &msm8974_bimc_a_clk, 497 [RPM_SMD_OCMEMGX_CLK] = &msm8974_ocmemgx_clk, 498 [RPM_SMD_OCMEMGX_A_CLK] = &msm8974_ocmemgx_a_clk, 499 [RPM_SMD_QDSS_CLK] = &msm8974_qdss_clk, 500 [RPM_SMD_QDSS_A_CLK] = &msm8974_qdss_a_clk, 501 [RPM_SMD_CXO_D0] = &msm8974_cxo_d0, 502 [RPM_SMD_CXO_D0_A] = &msm8974_cxo_d0_a, 503 [RPM_SMD_CXO_D1] = &msm8974_cxo_d1, 504 [RPM_SMD_CXO_D1_A] = &msm8974_cxo_d1_a, 505 [RPM_SMD_CXO_A0] = &msm8974_cxo_a0, 506 [RPM_SMD_CXO_A0_A] = &msm8974_cxo_a0_a, 507 [RPM_SMD_CXO_A1] = &msm8974_cxo_a1, 508 [RPM_SMD_CXO_A1_A] = &msm8974_cxo_a1_a, 509 [RPM_SMD_CXO_A2] = &msm8974_cxo_a2, 510 [RPM_SMD_CXO_A2_A] = &msm8974_cxo_a2_a, 511 [RPM_SMD_DIFF_CLK] = &msm8974_diff_clk, 512 [RPM_SMD_DIFF_A_CLK] = &msm8974_diff_a_clk, 513 [RPM_SMD_DIV_CLK1] = &msm8974_div_clk1, 514 [RPM_SMD_DIV_A_CLK1] = &msm8974_div_a_clk1, 515 [RPM_SMD_DIV_CLK2] = &msm8974_div_clk2, 516 [RPM_SMD_DIV_A_CLK2] = &msm8974_div_a_clk2, 517 [RPM_SMD_CXO_D0_PIN] = &msm8974_cxo_d0_pin, 518 [RPM_SMD_CXO_D0_A_PIN] = &msm8974_cxo_d0_a_pin, 519 [RPM_SMD_CXO_D1_PIN] = &msm8974_cxo_d1_pin, 520 [RPM_SMD_CXO_D1_A_PIN] = &msm8974_cxo_d1_a_pin, 521 [RPM_SMD_CXO_A0_PIN] = &msm8974_cxo_a0_pin, 522 [RPM_SMD_CXO_A0_A_PIN] = &msm8974_cxo_a0_a_pin, 523 [RPM_SMD_CXO_A1_PIN] = &msm8974_cxo_a1_pin, 524 [RPM_SMD_CXO_A1_A_PIN] = &msm8974_cxo_a1_a_pin, 525 [RPM_SMD_CXO_A2_PIN] = &msm8974_cxo_a2_pin, 526 [RPM_SMD_CXO_A2_A_PIN] = &msm8974_cxo_a2_a_pin, 527 }; 528 529 static const struct rpm_smd_clk_desc rpm_clk_msm8974 = { 530 .clks = msm8974_clks, 531 .num_clks = ARRAY_SIZE(msm8974_clks), 532 }; 533 534 /* msm8996 */ 535 DEFINE_CLK_SMD_RPM(msm8996, pcnoc_clk, pcnoc_a_clk, QCOM_SMD_RPM_BUS_CLK, 0); 536 DEFINE_CLK_SMD_RPM(msm8996, snoc_clk, snoc_a_clk, QCOM_SMD_RPM_BUS_CLK, 1); 537 DEFINE_CLK_SMD_RPM(msm8996, cnoc_clk, cnoc_a_clk, QCOM_SMD_RPM_BUS_CLK, 2); 538 DEFINE_CLK_SMD_RPM(msm8996, bimc_clk, bimc_a_clk, QCOM_SMD_RPM_MEM_CLK, 0); 539 DEFINE_CLK_SMD_RPM(msm8996, mmssnoc_axi_rpm_clk, mmssnoc_axi_rpm_a_clk, 540 QCOM_SMD_RPM_MMAXI_CLK, 0); 541 DEFINE_CLK_SMD_RPM(msm8996, ipa_clk, ipa_a_clk, QCOM_SMD_RPM_IPA_CLK, 0); 542 DEFINE_CLK_SMD_RPM(msm8996, ce1_clk, ce1_a_clk, QCOM_SMD_RPM_CE_CLK, 0); 543 DEFINE_CLK_SMD_RPM_BRANCH(msm8996, aggre1_noc_clk, aggre1_noc_a_clk, 544 QCOM_SMD_RPM_AGGR_CLK, 1, 1000); 545 DEFINE_CLK_SMD_RPM_BRANCH(msm8996, aggre2_noc_clk, aggre2_noc_a_clk, 546 QCOM_SMD_RPM_AGGR_CLK, 2, 1000); 547 DEFINE_CLK_SMD_RPM_QDSS(msm8996, qdss_clk, qdss_a_clk, 548 QCOM_SMD_RPM_MISC_CLK, 1); 549 DEFINE_CLK_SMD_RPM_XO_BUFFER(msm8996, bb_clk1, bb_clk1_a, 1); 550 DEFINE_CLK_SMD_RPM_XO_BUFFER(msm8996, bb_clk2, bb_clk2_a, 2); 551 DEFINE_CLK_SMD_RPM_XO_BUFFER(msm8996, rf_clk1, rf_clk1_a, 4); 552 DEFINE_CLK_SMD_RPM_XO_BUFFER(msm8996, rf_clk2, rf_clk2_a, 5); 553 DEFINE_CLK_SMD_RPM_XO_BUFFER(msm8996, ln_bb_clk, ln_bb_a_clk, 8); 554 DEFINE_CLK_SMD_RPM_XO_BUFFER(msm8996, div_clk1, div_clk1_a, 0xb); 555 DEFINE_CLK_SMD_RPM_XO_BUFFER(msm8996, div_clk2, div_clk2_a, 0xc); 556 DEFINE_CLK_SMD_RPM_XO_BUFFER(msm8996, div_clk3, div_clk3_a, 0xd); 557 DEFINE_CLK_SMD_RPM_XO_BUFFER_PINCTRL(msm8996, bb_clk1_pin, bb_clk1_a_pin, 1); 558 DEFINE_CLK_SMD_RPM_XO_BUFFER_PINCTRL(msm8996, bb_clk2_pin, bb_clk2_a_pin, 2); 559 DEFINE_CLK_SMD_RPM_XO_BUFFER_PINCTRL(msm8996, rf_clk1_pin, rf_clk1_a_pin, 4); 560 DEFINE_CLK_SMD_RPM_XO_BUFFER_PINCTRL(msm8996, rf_clk2_pin, rf_clk2_a_pin, 5); 561 562 static struct clk_smd_rpm *msm8996_clks[] = { 563 [RPM_SMD_PCNOC_CLK] = &msm8996_pcnoc_clk, 564 [RPM_SMD_PCNOC_A_CLK] = &msm8996_pcnoc_a_clk, 565 [RPM_SMD_SNOC_CLK] = &msm8996_snoc_clk, 566 [RPM_SMD_SNOC_A_CLK] = &msm8996_snoc_a_clk, 567 [RPM_SMD_CNOC_CLK] = &msm8996_cnoc_clk, 568 [RPM_SMD_CNOC_A_CLK] = &msm8996_cnoc_a_clk, 569 [RPM_SMD_BIMC_CLK] = &msm8996_bimc_clk, 570 [RPM_SMD_BIMC_A_CLK] = &msm8996_bimc_a_clk, 571 [RPM_SMD_MMAXI_CLK] = &msm8996_mmssnoc_axi_rpm_clk, 572 [RPM_SMD_MMAXI_A_CLK] = &msm8996_mmssnoc_axi_rpm_a_clk, 573 [RPM_SMD_IPA_CLK] = &msm8996_ipa_clk, 574 [RPM_SMD_IPA_A_CLK] = &msm8996_ipa_a_clk, 575 [RPM_SMD_CE1_CLK] = &msm8996_ce1_clk, 576 [RPM_SMD_CE1_A_CLK] = &msm8996_ce1_a_clk, 577 [RPM_SMD_AGGR1_NOC_CLK] = &msm8996_aggre1_noc_clk, 578 [RPM_SMD_AGGR1_NOC_A_CLK] = &msm8996_aggre1_noc_a_clk, 579 [RPM_SMD_AGGR2_NOC_CLK] = &msm8996_aggre2_noc_clk, 580 [RPM_SMD_AGGR2_NOC_A_CLK] = &msm8996_aggre2_noc_a_clk, 581 [RPM_SMD_QDSS_CLK] = &msm8996_qdss_clk, 582 [RPM_SMD_QDSS_A_CLK] = &msm8996_qdss_a_clk, 583 [RPM_SMD_BB_CLK1] = &msm8996_bb_clk1, 584 [RPM_SMD_BB_CLK1_A] = &msm8996_bb_clk1_a, 585 [RPM_SMD_BB_CLK2] = &msm8996_bb_clk2, 586 [RPM_SMD_BB_CLK2_A] = &msm8996_bb_clk2_a, 587 [RPM_SMD_RF_CLK1] = &msm8996_rf_clk1, 588 [RPM_SMD_RF_CLK1_A] = &msm8996_rf_clk1_a, 589 [RPM_SMD_RF_CLK2] = &msm8996_rf_clk2, 590 [RPM_SMD_RF_CLK2_A] = &msm8996_rf_clk2_a, 591 [RPM_SMD_LN_BB_CLK] = &msm8996_ln_bb_clk, 592 [RPM_SMD_LN_BB_A_CLK] = &msm8996_ln_bb_a_clk, 593 [RPM_SMD_DIV_CLK1] = &msm8996_div_clk1, 594 [RPM_SMD_DIV_A_CLK1] = &msm8996_div_clk1_a, 595 [RPM_SMD_DIV_CLK2] = &msm8996_div_clk2, 596 [RPM_SMD_DIV_A_CLK2] = &msm8996_div_clk2_a, 597 [RPM_SMD_DIV_CLK3] = &msm8996_div_clk3, 598 [RPM_SMD_DIV_A_CLK3] = &msm8996_div_clk3_a, 599 [RPM_SMD_BB_CLK1_PIN] = &msm8996_bb_clk1_pin, 600 [RPM_SMD_BB_CLK1_A_PIN] = &msm8996_bb_clk1_a_pin, 601 [RPM_SMD_BB_CLK2_PIN] = &msm8996_bb_clk2_pin, 602 [RPM_SMD_BB_CLK2_A_PIN] = &msm8996_bb_clk2_a_pin, 603 [RPM_SMD_RF_CLK1_PIN] = &msm8996_rf_clk1_pin, 604 [RPM_SMD_RF_CLK1_A_PIN] = &msm8996_rf_clk1_a_pin, 605 [RPM_SMD_RF_CLK2_PIN] = &msm8996_rf_clk2_pin, 606 [RPM_SMD_RF_CLK2_A_PIN] = &msm8996_rf_clk2_a_pin, 607 }; 608 609 static const struct rpm_smd_clk_desc rpm_clk_msm8996 = { 610 .clks = msm8996_clks, 611 .num_clks = ARRAY_SIZE(msm8996_clks), 612 }; 613 614 static const struct of_device_id rpm_smd_clk_match_table[] = { 615 { .compatible = "qcom,rpmcc-msm8916", .data = &rpm_clk_msm8916 }, 616 { .compatible = "qcom,rpmcc-msm8974", .data = &rpm_clk_msm8974 }, 617 { .compatible = "qcom,rpmcc-msm8996", .data = &rpm_clk_msm8996 }, 618 { } 619 }; 620 MODULE_DEVICE_TABLE(of, rpm_smd_clk_match_table); 621 622 static struct clk_hw *qcom_smdrpm_clk_hw_get(struct of_phandle_args *clkspec, 623 void *data) 624 { 625 struct rpm_cc *rcc = data; 626 unsigned int idx = clkspec->args[0]; 627 628 if (idx >= rcc->num_clks) { 629 pr_err("%s: invalid index %u\n", __func__, idx); 630 return ERR_PTR(-EINVAL); 631 } 632 633 return rcc->clks[idx] ? &rcc->clks[idx]->hw : ERR_PTR(-ENOENT); 634 } 635 636 static int rpm_smd_clk_probe(struct platform_device *pdev) 637 { 638 struct rpm_cc *rcc; 639 int ret; 640 size_t num_clks, i; 641 struct qcom_smd_rpm *rpm; 642 struct clk_smd_rpm **rpm_smd_clks; 643 const struct rpm_smd_clk_desc *desc; 644 645 rpm = dev_get_drvdata(pdev->dev.parent); 646 if (!rpm) { 647 dev_err(&pdev->dev, "Unable to retrieve handle to RPM\n"); 648 return -ENODEV; 649 } 650 651 desc = of_device_get_match_data(&pdev->dev); 652 if (!desc) 653 return -EINVAL; 654 655 rpm_smd_clks = desc->clks; 656 num_clks = desc->num_clks; 657 658 rcc = devm_kzalloc(&pdev->dev, sizeof(*rcc), GFP_KERNEL); 659 if (!rcc) 660 return -ENOMEM; 661 662 rcc->clks = rpm_smd_clks; 663 rcc->num_clks = num_clks; 664 665 for (i = 0; i < num_clks; i++) { 666 if (!rpm_smd_clks[i]) 667 continue; 668 669 rpm_smd_clks[i]->rpm = rpm; 670 671 ret = clk_smd_rpm_handoff(rpm_smd_clks[i]); 672 if (ret) 673 goto err; 674 } 675 676 ret = clk_smd_rpm_enable_scaling(rpm); 677 if (ret) 678 goto err; 679 680 for (i = 0; i < num_clks; i++) { 681 if (!rpm_smd_clks[i]) 682 continue; 683 684 ret = devm_clk_hw_register(&pdev->dev, &rpm_smd_clks[i]->hw); 685 if (ret) 686 goto err; 687 } 688 689 ret = devm_of_clk_add_hw_provider(&pdev->dev, qcom_smdrpm_clk_hw_get, 690 rcc); 691 if (ret) 692 goto err; 693 694 return 0; 695 err: 696 dev_err(&pdev->dev, "Error registering SMD clock driver (%d)\n", ret); 697 return ret; 698 } 699 700 static struct platform_driver rpm_smd_clk_driver = { 701 .driver = { 702 .name = "qcom-clk-smd-rpm", 703 .of_match_table = rpm_smd_clk_match_table, 704 }, 705 .probe = rpm_smd_clk_probe, 706 }; 707 708 static int __init rpm_smd_clk_init(void) 709 { 710 return platform_driver_register(&rpm_smd_clk_driver); 711 } 712 core_initcall(rpm_smd_clk_init); 713 714 static void __exit rpm_smd_clk_exit(void) 715 { 716 platform_driver_unregister(&rpm_smd_clk_driver); 717 } 718 module_exit(rpm_smd_clk_exit); 719 720 MODULE_DESCRIPTION("Qualcomm RPM over SMD Clock Controller Driver"); 721 MODULE_LICENSE("GPL v2"); 722 MODULE_ALIAS("platform:qcom-clk-smd-rpm"); 723