1 // SPDX-License-Identifier: GPL-2.0-only 2 /* 3 * Copyright (c) 2020, The Linux Foundation. All rights reserved. 4 */ 5 6 #include <linux/clk-provider.h> 7 #include <linux/err.h> 8 #include <linux/module.h> 9 #include <linux/of_device.h> 10 #include <linux/pm_clock.h> 11 #include <linux/pm_runtime.h> 12 #include <linux/of.h> 13 #include <linux/regmap.h> 14 15 #include <dt-bindings/clock/qcom,lpasscorecc-sc7180.h> 16 17 #include "clk-alpha-pll.h" 18 #include "clk-branch.h" 19 #include "clk-rcg.h" 20 #include "clk-regmap.h" 21 #include "common.h" 22 #include "gdsc.h" 23 24 enum { 25 P_BI_TCXO, 26 P_LPASS_LPAAUDIO_DIG_PLL_OUT_ODD, 27 P_SLEEP_CLK, 28 }; 29 30 static struct pll_vco fabia_vco[] = { 31 { 249600000, 2000000000, 0 }, 32 }; 33 34 static const struct alpha_pll_config lpass_lpaaudio_dig_pll_config = { 35 .l = 0x20, 36 .alpha = 0x0, 37 .config_ctl_val = 0x20485699, 38 .config_ctl_hi_val = 0x00002067, 39 .test_ctl_val = 0x40000000, 40 .test_ctl_hi_val = 0x00000000, 41 .user_ctl_val = 0x00005105, 42 .user_ctl_hi_val = 0x00004805, 43 }; 44 45 static const u8 clk_alpha_pll_regs_offset[][PLL_OFF_MAX_REGS] = { 46 [CLK_ALPHA_PLL_TYPE_FABIA] = { 47 [PLL_OFF_L_VAL] = 0x04, 48 [PLL_OFF_CAL_L_VAL] = 0x8, 49 [PLL_OFF_USER_CTL] = 0x0c, 50 [PLL_OFF_USER_CTL_U] = 0x10, 51 [PLL_OFF_USER_CTL_U1] = 0x14, 52 [PLL_OFF_CONFIG_CTL] = 0x18, 53 [PLL_OFF_CONFIG_CTL_U] = 0x1C, 54 [PLL_OFF_CONFIG_CTL_U1] = 0x20, 55 [PLL_OFF_TEST_CTL] = 0x24, 56 [PLL_OFF_TEST_CTL_U] = 0x28, 57 [PLL_OFF_STATUS] = 0x30, 58 [PLL_OFF_OPMODE] = 0x38, 59 [PLL_OFF_FRAC] = 0x40, 60 }, 61 }; 62 63 static struct clk_alpha_pll lpass_lpaaudio_dig_pll = { 64 .offset = 0x1000, 65 .vco_table = fabia_vco, 66 .num_vco = ARRAY_SIZE(fabia_vco), 67 .regs = clk_alpha_pll_regs_offset[CLK_ALPHA_PLL_TYPE_FABIA], 68 .clkr = { 69 .hw.init = &(struct clk_init_data){ 70 .name = "lpass_lpaaudio_dig_pll", 71 .parent_data = &(const struct clk_parent_data){ 72 .fw_name = "bi_tcxo", 73 }, 74 .num_parents = 1, 75 .ops = &clk_alpha_pll_fabia_ops, 76 }, 77 }, 78 }; 79 80 static const struct clk_div_table 81 post_div_table_lpass_lpaaudio_dig_pll_out_odd[] = { 82 { 0x5, 5 }, 83 { } 84 }; 85 86 static struct clk_alpha_pll_postdiv lpass_lpaaudio_dig_pll_out_odd = { 87 .offset = 0x1000, 88 .post_div_shift = 12, 89 .post_div_table = post_div_table_lpass_lpaaudio_dig_pll_out_odd, 90 .num_post_div = 91 ARRAY_SIZE(post_div_table_lpass_lpaaudio_dig_pll_out_odd), 92 .width = 4, 93 .regs = clk_alpha_pll_regs[CLK_ALPHA_PLL_TYPE_FABIA], 94 .clkr.hw.init = &(struct clk_init_data){ 95 .name = "lpass_lpaaudio_dig_pll_out_odd", 96 .parent_hws = (const struct clk_hw*[]) { 97 &lpass_lpaaudio_dig_pll.clkr.hw, 98 }, 99 .num_parents = 1, 100 .flags = CLK_SET_RATE_PARENT, 101 .ops = &clk_alpha_pll_postdiv_fabia_ops, 102 }, 103 }; 104 105 static const struct parent_map lpass_core_cc_parent_map_0[] = { 106 { P_BI_TCXO, 0 }, 107 { P_LPASS_LPAAUDIO_DIG_PLL_OUT_ODD, 5 }, 108 }; 109 110 static const struct clk_parent_data lpass_core_cc_parent_data_0[] = { 111 { .fw_name = "bi_tcxo" }, 112 { .hw = &lpass_lpaaudio_dig_pll_out_odd.clkr.hw }, 113 }; 114 115 static const struct parent_map lpass_core_cc_parent_map_2[] = { 116 { P_BI_TCXO, 0 }, 117 }; 118 119 static struct clk_rcg2 core_clk_src = { 120 .cmd_rcgr = 0x1d000, 121 .mnd_width = 8, 122 .hid_width = 5, 123 .parent_map = lpass_core_cc_parent_map_2, 124 .clkr.hw.init = &(struct clk_init_data){ 125 .name = "core_clk_src", 126 .parent_data = &(const struct clk_parent_data){ 127 .fw_name = "bi_tcxo", 128 }, 129 .num_parents = 1, 130 .ops = &clk_rcg2_ops, 131 }, 132 }; 133 134 static const struct freq_tbl ftbl_ext_mclk0_clk_src[] = { 135 F(9600000, P_BI_TCXO, 2, 0, 0), 136 F(19200000, P_BI_TCXO, 1, 0, 0), 137 { } 138 }; 139 140 static const struct freq_tbl ftbl_ext_lpaif_clk_src[] = { 141 F(256000, P_LPASS_LPAAUDIO_DIG_PLL_OUT_ODD, 15, 1, 32), 142 F(512000, P_LPASS_LPAAUDIO_DIG_PLL_OUT_ODD, 15, 1, 16), 143 F(768000, P_LPASS_LPAAUDIO_DIG_PLL_OUT_ODD, 10, 1, 16), 144 F(1024000, P_LPASS_LPAAUDIO_DIG_PLL_OUT_ODD, 15, 1, 8), 145 F(1536000, P_LPASS_LPAAUDIO_DIG_PLL_OUT_ODD, 10, 1, 8), 146 F(2048000, P_LPASS_LPAAUDIO_DIG_PLL_OUT_ODD, 15, 1, 4), 147 F(3072000, P_LPASS_LPAAUDIO_DIG_PLL_OUT_ODD, 10, 1, 4), 148 F(4096000, P_LPASS_LPAAUDIO_DIG_PLL_OUT_ODD, 15, 1, 2), 149 F(6144000, P_LPASS_LPAAUDIO_DIG_PLL_OUT_ODD, 10, 1, 2), 150 F(8192000, P_LPASS_LPAAUDIO_DIG_PLL_OUT_ODD, 15, 0, 0), 151 F(9600000, P_BI_TCXO, 2, 0, 0), 152 F(12288000, P_LPASS_LPAAUDIO_DIG_PLL_OUT_ODD, 10, 0, 0), 153 F(19200000, P_BI_TCXO, 1, 0, 0), 154 F(24576000, P_LPASS_LPAAUDIO_DIG_PLL_OUT_ODD, 5, 0, 0), 155 { } 156 }; 157 158 static struct clk_rcg2 ext_mclk0_clk_src = { 159 .cmd_rcgr = 0x20000, 160 .mnd_width = 8, 161 .hid_width = 5, 162 .parent_map = lpass_core_cc_parent_map_0, 163 .freq_tbl = ftbl_ext_mclk0_clk_src, 164 .clkr.hw.init = &(struct clk_init_data){ 165 .name = "ext_mclk0_clk_src", 166 .parent_data = lpass_core_cc_parent_data_0, 167 .num_parents = 2, 168 .flags = CLK_SET_RATE_PARENT, 169 .ops = &clk_rcg2_ops, 170 }, 171 }; 172 173 static struct clk_rcg2 lpaif_pri_clk_src = { 174 .cmd_rcgr = 0x10000, 175 .mnd_width = 16, 176 .hid_width = 5, 177 .parent_map = lpass_core_cc_parent_map_0, 178 .freq_tbl = ftbl_ext_lpaif_clk_src, 179 .clkr.hw.init = &(struct clk_init_data){ 180 .name = "lpaif_pri_clk_src", 181 .parent_data = lpass_core_cc_parent_data_0, 182 .num_parents = 2, 183 .flags = CLK_SET_RATE_PARENT, 184 .ops = &clk_rcg2_ops, 185 }, 186 }; 187 188 static struct clk_rcg2 lpaif_sec_clk_src = { 189 .cmd_rcgr = 0x11000, 190 .mnd_width = 16, 191 .hid_width = 5, 192 .parent_map = lpass_core_cc_parent_map_0, 193 .freq_tbl = ftbl_ext_lpaif_clk_src, 194 .clkr.hw.init = &(struct clk_init_data){ 195 .name = "lpaif_sec_clk_src", 196 .parent_data = lpass_core_cc_parent_data_0, 197 .num_parents = 2, 198 .flags = CLK_SET_RATE_PARENT, 199 .ops = &clk_rcg2_ops, 200 }, 201 }; 202 203 static struct clk_branch lpass_audio_core_ext_mclk0_clk = { 204 .halt_reg = 0x20014, 205 .halt_check = BRANCH_HALT, 206 .hwcg_reg = 0x20014, 207 .hwcg_bit = 1, 208 .clkr = { 209 .enable_reg = 0x20014, 210 .enable_mask = BIT(0), 211 .hw.init = &(struct clk_init_data){ 212 .name = "lpass_audio_core_ext_mclk0_clk", 213 .parent_hws = (const struct clk_hw*[]) { 214 &ext_mclk0_clk_src.clkr.hw, 215 }, 216 .num_parents = 1, 217 .flags = CLK_SET_RATE_PARENT, 218 .ops = &clk_branch2_ops, 219 }, 220 }, 221 }; 222 223 static struct clk_branch lpass_audio_core_lpaif_pri_ibit_clk = { 224 .halt_reg = 0x10018, 225 .halt_check = BRANCH_HALT, 226 .hwcg_reg = 0x10018, 227 .hwcg_bit = 1, 228 .clkr = { 229 .enable_reg = 0x10018, 230 .enable_mask = BIT(0), 231 .hw.init = &(struct clk_init_data){ 232 .name = "lpass_audio_core_lpaif_pri_ibit_clk", 233 .parent_hws = (const struct clk_hw*[]) { 234 &lpaif_pri_clk_src.clkr.hw, 235 }, 236 .num_parents = 1, 237 .flags = CLK_SET_RATE_PARENT, 238 .ops = &clk_branch2_ops, 239 }, 240 }, 241 }; 242 243 static struct clk_branch lpass_audio_core_lpaif_sec_ibit_clk = { 244 .halt_reg = 0x11018, 245 .halt_check = BRANCH_HALT, 246 .hwcg_reg = 0x11018, 247 .hwcg_bit = 1, 248 .clkr = { 249 .enable_reg = 0x11018, 250 .enable_mask = BIT(0), 251 .hw.init = &(struct clk_init_data){ 252 .name = "lpass_audio_core_lpaif_sec_ibit_clk", 253 .parent_hws = (const struct clk_hw*[]) { 254 &lpaif_sec_clk_src.clkr.hw, 255 }, 256 .num_parents = 1, 257 .flags = CLK_SET_RATE_PARENT, 258 .ops = &clk_branch2_ops, 259 }, 260 }, 261 }; 262 263 static struct clk_branch lpass_audio_core_sysnoc_mport_core_clk = { 264 .halt_reg = 0x23000, 265 .halt_check = BRANCH_HALT, 266 .hwcg_reg = 0x23000, 267 .hwcg_bit = 1, 268 .clkr = { 269 .enable_reg = 0x23000, 270 .enable_mask = BIT(0), 271 .hw.init = &(struct clk_init_data){ 272 .name = "lpass_audio_core_sysnoc_mport_core_clk", 273 .parent_hws = (const struct clk_hw*[]) { 274 &core_clk_src.clkr.hw, 275 }, 276 .num_parents = 1, 277 .flags = CLK_SET_RATE_PARENT, 278 .ops = &clk_branch2_ops, 279 }, 280 }, 281 }; 282 283 static struct clk_regmap *lpass_core_cc_sc7180_clocks[] = { 284 [EXT_MCLK0_CLK_SRC] = &ext_mclk0_clk_src.clkr, 285 [LPAIF_PRI_CLK_SRC] = &lpaif_pri_clk_src.clkr, 286 [LPAIF_SEC_CLK_SRC] = &lpaif_sec_clk_src.clkr, 287 [CORE_CLK_SRC] = &core_clk_src.clkr, 288 [LPASS_AUDIO_CORE_EXT_MCLK0_CLK] = &lpass_audio_core_ext_mclk0_clk.clkr, 289 [LPASS_AUDIO_CORE_LPAIF_PRI_IBIT_CLK] = 290 &lpass_audio_core_lpaif_pri_ibit_clk.clkr, 291 [LPASS_AUDIO_CORE_LPAIF_SEC_IBIT_CLK] = 292 &lpass_audio_core_lpaif_sec_ibit_clk.clkr, 293 [LPASS_AUDIO_CORE_SYSNOC_MPORT_CORE_CLK] = 294 &lpass_audio_core_sysnoc_mport_core_clk.clkr, 295 [LPASS_LPAAUDIO_DIG_PLL] = &lpass_lpaaudio_dig_pll.clkr, 296 [LPASS_LPAAUDIO_DIG_PLL_OUT_ODD] = &lpass_lpaaudio_dig_pll_out_odd.clkr, 297 }; 298 299 static struct gdsc lpass_pdc_hm_gdsc = { 300 .gdscr = 0x3090, 301 .pd = { 302 .name = "lpass_pdc_hm_gdsc", 303 }, 304 .pwrsts = PWRSTS_OFF_ON, 305 .flags = VOTABLE, 306 }; 307 308 static struct gdsc lpass_audio_hm_gdsc = { 309 .gdscr = 0x9090, 310 .pd = { 311 .name = "lpass_audio_hm_gdsc", 312 }, 313 .pwrsts = PWRSTS_OFF_ON, 314 }; 315 316 static struct gdsc lpass_core_hm_gdsc = { 317 .gdscr = 0x0, 318 .pd = { 319 .name = "lpass_core_hm_gdsc", 320 }, 321 .pwrsts = PWRSTS_OFF_ON, 322 .flags = RETAIN_FF_ENABLE, 323 }; 324 325 static struct gdsc *lpass_core_hm_sc7180_gdscs[] = { 326 [LPASS_CORE_HM_GDSCR] = &lpass_core_hm_gdsc, 327 }; 328 329 static struct gdsc *lpass_audio_hm_sc7180_gdscs[] = { 330 [LPASS_PDC_HM_GDSCR] = &lpass_pdc_hm_gdsc, 331 [LPASS_AUDIO_HM_GDSCR] = &lpass_audio_hm_gdsc, 332 }; 333 334 static struct regmap_config lpass_core_cc_sc7180_regmap_config = { 335 .reg_bits = 32, 336 .reg_stride = 4, 337 .val_bits = 32, 338 .fast_io = true, 339 }; 340 341 static const struct qcom_cc_desc lpass_core_hm_sc7180_desc = { 342 .config = &lpass_core_cc_sc7180_regmap_config, 343 .gdscs = lpass_core_hm_sc7180_gdscs, 344 .num_gdscs = ARRAY_SIZE(lpass_core_hm_sc7180_gdscs), 345 }; 346 347 static const struct qcom_cc_desc lpass_core_cc_sc7180_desc = { 348 .config = &lpass_core_cc_sc7180_regmap_config, 349 .clks = lpass_core_cc_sc7180_clocks, 350 .num_clks = ARRAY_SIZE(lpass_core_cc_sc7180_clocks), 351 }; 352 353 static const struct qcom_cc_desc lpass_audio_hm_sc7180_desc = { 354 .config = &lpass_core_cc_sc7180_regmap_config, 355 .gdscs = lpass_audio_hm_sc7180_gdscs, 356 .num_gdscs = ARRAY_SIZE(lpass_audio_hm_sc7180_gdscs), 357 }; 358 359 static int lpass_setup_runtime_pm(struct platform_device *pdev) 360 { 361 int ret; 362 363 pm_runtime_use_autosuspend(&pdev->dev); 364 pm_runtime_set_autosuspend_delay(&pdev->dev, 500); 365 366 ret = devm_pm_runtime_enable(&pdev->dev); 367 if (ret) 368 return ret; 369 370 ret = devm_pm_clk_create(&pdev->dev); 371 if (ret) 372 return ret; 373 374 ret = pm_clk_add(&pdev->dev, "iface"); 375 if (ret < 0) 376 dev_err(&pdev->dev, "failed to acquire iface clock\n"); 377 378 return pm_runtime_resume_and_get(&pdev->dev); 379 } 380 381 static int lpass_core_cc_sc7180_probe(struct platform_device *pdev) 382 { 383 const struct qcom_cc_desc *desc; 384 struct regmap *regmap; 385 int ret; 386 387 ret = lpass_setup_runtime_pm(pdev); 388 if (ret) 389 return ret; 390 391 lpass_core_cc_sc7180_regmap_config.name = "lpass_audio_cc"; 392 desc = &lpass_audio_hm_sc7180_desc; 393 ret = qcom_cc_probe_by_index(pdev, 1, desc); 394 if (ret) 395 goto exit; 396 397 lpass_core_cc_sc7180_regmap_config.name = "lpass_core_cc"; 398 regmap = qcom_cc_map(pdev, &lpass_core_cc_sc7180_desc); 399 if (IS_ERR(regmap)) { 400 ret = PTR_ERR(regmap); 401 goto exit; 402 } 403 404 /* 405 * Keep the CLK always-ON 406 * LPASS_AUDIO_CORE_SYSNOC_SWAY_CORE_CLK 407 */ 408 regmap_update_bits(regmap, 0x24000, BIT(0), BIT(0)); 409 410 /* PLL settings */ 411 regmap_write(regmap, 0x1008, 0x20); 412 regmap_update_bits(regmap, 0x1014, BIT(0), BIT(0)); 413 414 clk_fabia_pll_configure(&lpass_lpaaudio_dig_pll, regmap, 415 &lpass_lpaaudio_dig_pll_config); 416 417 ret = qcom_cc_really_probe(pdev, &lpass_core_cc_sc7180_desc, regmap); 418 419 pm_runtime_mark_last_busy(&pdev->dev); 420 exit: 421 pm_runtime_put_autosuspend(&pdev->dev); 422 423 return ret; 424 } 425 426 static int lpass_hm_core_probe(struct platform_device *pdev) 427 { 428 const struct qcom_cc_desc *desc; 429 int ret; 430 431 ret = lpass_setup_runtime_pm(pdev); 432 if (ret) 433 return ret; 434 435 lpass_core_cc_sc7180_regmap_config.name = "lpass_hm_core"; 436 desc = &lpass_core_hm_sc7180_desc; 437 438 ret = qcom_cc_probe_by_index(pdev, 0, desc); 439 440 pm_runtime_mark_last_busy(&pdev->dev); 441 pm_runtime_put_autosuspend(&pdev->dev); 442 443 return ret; 444 } 445 446 static const struct of_device_id lpass_hm_sc7180_match_table[] = { 447 { 448 .compatible = "qcom,sc7180-lpasshm", 449 }, 450 { } 451 }; 452 MODULE_DEVICE_TABLE(of, lpass_hm_sc7180_match_table); 453 454 static const struct of_device_id lpass_core_cc_sc7180_match_table[] = { 455 { 456 .compatible = "qcom,sc7180-lpasscorecc", 457 }, 458 { } 459 }; 460 MODULE_DEVICE_TABLE(of, lpass_core_cc_sc7180_match_table); 461 462 static const struct dev_pm_ops lpass_pm_ops = { 463 SET_RUNTIME_PM_OPS(pm_clk_suspend, pm_clk_resume, NULL) 464 }; 465 466 static struct platform_driver lpass_core_cc_sc7180_driver = { 467 .probe = lpass_core_cc_sc7180_probe, 468 .driver = { 469 .name = "lpass_core_cc-sc7180", 470 .of_match_table = lpass_core_cc_sc7180_match_table, 471 .pm = &lpass_pm_ops, 472 }, 473 }; 474 475 static struct platform_driver lpass_hm_sc7180_driver = { 476 .probe = lpass_hm_core_probe, 477 .driver = { 478 .name = "lpass_hm-sc7180", 479 .of_match_table = lpass_hm_sc7180_match_table, 480 .pm = &lpass_pm_ops, 481 }, 482 }; 483 484 static int __init lpass_sc7180_init(void) 485 { 486 int ret; 487 488 ret = platform_driver_register(&lpass_core_cc_sc7180_driver); 489 if (ret) 490 return ret; 491 492 ret = platform_driver_register(&lpass_hm_sc7180_driver); 493 if (ret) { 494 platform_driver_unregister(&lpass_core_cc_sc7180_driver); 495 return ret; 496 } 497 498 return 0; 499 } 500 subsys_initcall(lpass_sc7180_init); 501 502 static void __exit lpass_sc7180_exit(void) 503 { 504 platform_driver_unregister(&lpass_hm_sc7180_driver); 505 platform_driver_unregister(&lpass_core_cc_sc7180_driver); 506 } 507 module_exit(lpass_sc7180_exit); 508 509 MODULE_DESCRIPTION("QTI LPASS_CORE_CC SC7180 Driver"); 510 MODULE_LICENSE("GPL v2"); 511