1 // SPDX-License-Identifier: GPL-2.0-only 2 /* 3 * Copyright (c) 2021, The Linux Foundation. All rights reserved. 4 */ 5 6 #include <linux/clk-provider.h> 7 #include <linux/kernel.h> 8 #include <linux/module.h> 9 #include <linux/platform_device.h> 10 #include <linux/pm_runtime.h> 11 #include <linux/regmap.h> 12 13 #include <dt-bindings/clock/qcom,gpucc-sc8280xp.h> 14 15 #include "clk-alpha-pll.h" 16 #include "clk-branch.h" 17 #include "clk-rcg.h" 18 #include "clk-regmap-divider.h" 19 #include "common.h" 20 #include "reset.h" 21 #include "gdsc.h" 22 23 /* Need to match the order of clocks in DT binding */ 24 enum { 25 DT_BI_TCXO, 26 DT_GCC_GPU_GPLL0_CLK_SRC, 27 DT_GCC_GPU_GPLL0_DIV_CLK_SRC, 28 }; 29 30 enum { 31 P_BI_TCXO, 32 P_GCC_GPU_GPLL0_CLK_SRC, 33 P_GCC_GPU_GPLL0_DIV_CLK_SRC, 34 P_GPU_CC_PLL0_OUT_MAIN, 35 P_GPU_CC_PLL1_OUT_MAIN, 36 }; 37 38 static const struct clk_parent_data parent_data_tcxo = { .index = DT_BI_TCXO }; 39 40 static const struct pll_vco lucid_5lpe_vco[] = { 41 { 249600000, 1800000000, 0 }, 42 }; 43 44 static struct alpha_pll_config gpu_cc_pll0_config = { 45 .l = 0x1c, 46 .alpha = 0xa555, 47 .config_ctl_val = 0x20485699, 48 .config_ctl_hi_val = 0x00002261, 49 .config_ctl_hi1_val = 0x2a9a699c, 50 .test_ctl_val = 0x00000000, 51 .test_ctl_hi_val = 0x00000000, 52 .test_ctl_hi1_val = 0x01800000, 53 .user_ctl_val = 0x00000000, 54 .user_ctl_hi_val = 0x00000805, 55 .user_ctl_hi1_val = 0x00000000, 56 }; 57 58 static struct clk_alpha_pll gpu_cc_pll0 = { 59 .offset = 0x0, 60 .vco_table = lucid_5lpe_vco, 61 .num_vco = ARRAY_SIZE(lucid_5lpe_vco), 62 .regs = clk_alpha_pll_regs[CLK_ALPHA_PLL_TYPE_LUCID], 63 .clkr = { 64 .hw.init = &(const struct clk_init_data){ 65 .name = "gpu_cc_pll0", 66 .parent_data = &parent_data_tcxo, 67 .num_parents = 1, 68 .ops = &clk_alpha_pll_lucid_5lpe_ops, 69 }, 70 }, 71 }; 72 73 static struct alpha_pll_config gpu_cc_pll1_config = { 74 .l = 0x1A, 75 .alpha = 0xaaa, 76 .config_ctl_val = 0x20485699, 77 .config_ctl_hi_val = 0x00002261, 78 .config_ctl_hi1_val = 0x2a9a699c, 79 .test_ctl_val = 0x00000000, 80 .test_ctl_hi_val = 0x00000000, 81 .test_ctl_hi1_val = 0x01800000, 82 .user_ctl_val = 0x00000000, 83 .user_ctl_hi_val = 0x00000805, 84 .user_ctl_hi1_val = 0x00000000, 85 }; 86 87 static struct clk_alpha_pll gpu_cc_pll1 = { 88 .offset = 0x100, 89 .vco_table = lucid_5lpe_vco, 90 .num_vco = ARRAY_SIZE(lucid_5lpe_vco), 91 .regs = clk_alpha_pll_regs[CLK_ALPHA_PLL_TYPE_LUCID], 92 .clkr = { 93 .hw.init = &(const struct clk_init_data){ 94 .name = "gpu_cc_pll1", 95 .parent_data = &parent_data_tcxo, 96 .num_parents = 1, 97 .ops = &clk_alpha_pll_lucid_5lpe_ops, 98 }, 99 }, 100 }; 101 102 static const struct parent_map gpu_cc_parent_map_0[] = { 103 { P_BI_TCXO, 0 }, 104 { P_GPU_CC_PLL0_OUT_MAIN, 1 }, 105 { P_GPU_CC_PLL1_OUT_MAIN, 3 }, 106 { P_GCC_GPU_GPLL0_CLK_SRC, 5 }, 107 { P_GCC_GPU_GPLL0_DIV_CLK_SRC, 6 }, 108 }; 109 110 static const struct clk_parent_data gpu_cc_parent_data_0[] = { 111 { .index = DT_BI_TCXO }, 112 { .hw = &gpu_cc_pll0.clkr.hw }, 113 { .hw = &gpu_cc_pll1.clkr.hw }, 114 { .index = DT_GCC_GPU_GPLL0_CLK_SRC }, 115 { .index = DT_GCC_GPU_GPLL0_DIV_CLK_SRC }, 116 }; 117 118 static const struct parent_map gpu_cc_parent_map_1[] = { 119 { P_BI_TCXO, 0 }, 120 { P_GPU_CC_PLL1_OUT_MAIN, 3 }, 121 { P_GCC_GPU_GPLL0_CLK_SRC, 5 }, 122 { P_GCC_GPU_GPLL0_DIV_CLK_SRC, 6 }, 123 }; 124 125 static const struct clk_parent_data gpu_cc_parent_data_1[] = { 126 { .index = DT_BI_TCXO }, 127 { .hw = &gpu_cc_pll1.clkr.hw }, 128 { .index = DT_GCC_GPU_GPLL0_CLK_SRC }, 129 { .index = DT_GCC_GPU_GPLL0_DIV_CLK_SRC }, 130 }; 131 132 static const struct freq_tbl ftbl_gpu_cc_gmu_clk_src[] = { 133 F(19200000, P_BI_TCXO, 1, 0, 0), 134 F(200000000, P_GCC_GPU_GPLL0_DIV_CLK_SRC, 1.5, 0, 0), 135 F(500000000, P_GPU_CC_PLL1_OUT_MAIN, 1, 0, 0), 136 { } 137 }; 138 139 static struct clk_rcg2 gpu_cc_gmu_clk_src = { 140 .cmd_rcgr = 0x1120, 141 .mnd_width = 0, 142 .hid_width = 5, 143 .parent_map = gpu_cc_parent_map_0, 144 .freq_tbl = ftbl_gpu_cc_gmu_clk_src, 145 .clkr.hw.init = &(const struct clk_init_data){ 146 .name = "gpu_cc_gmu_clk_src", 147 .parent_data = gpu_cc_parent_data_0, 148 .num_parents = ARRAY_SIZE(gpu_cc_parent_data_0), 149 .ops = &clk_rcg2_shared_ops, 150 }, 151 }; 152 153 static const struct freq_tbl ftbl_gpu_cc_hub_clk_src[] = { 154 F(200000000, P_GCC_GPU_GPLL0_CLK_SRC, 3, 0, 0), 155 F(300000000, P_GCC_GPU_GPLL0_CLK_SRC, 2, 0, 0), 156 F(400000000, P_GCC_GPU_GPLL0_CLK_SRC, 1.5, 0, 0), 157 { } 158 }; 159 160 static struct clk_rcg2 gpu_cc_hub_clk_src = { 161 .cmd_rcgr = 0x117c, 162 .mnd_width = 0, 163 .hid_width = 5, 164 .parent_map = gpu_cc_parent_map_1, 165 .freq_tbl = ftbl_gpu_cc_hub_clk_src, 166 .clkr.hw.init = &(const struct clk_init_data){ 167 .name = "gpu_cc_hub_clk_src", 168 .parent_data = gpu_cc_parent_data_1, 169 .num_parents = ARRAY_SIZE(gpu_cc_parent_data_1), 170 .ops = &clk_rcg2_shared_ops, 171 }, 172 }; 173 174 static struct clk_regmap_div gpu_cc_hub_ahb_div_clk_src = { 175 .reg = 0x11c0, 176 .shift = 0, 177 .width = 4, 178 .clkr.hw.init = &(const struct clk_init_data) { 179 .name = "gpu_cc_hub_ahb_div_clk_src", 180 .parent_hws = (const struct clk_hw*[]){ 181 &gpu_cc_hub_clk_src.clkr.hw, 182 }, 183 .num_parents = 1, 184 .flags = CLK_SET_RATE_PARENT, 185 .ops = &clk_regmap_div_ro_ops, 186 }, 187 }; 188 189 static struct clk_regmap_div gpu_cc_hub_cx_int_div_clk_src = { 190 .reg = 0x11bc, 191 .shift = 0, 192 .width = 4, 193 .clkr.hw.init = &(const struct clk_init_data) { 194 .name = "gpu_cc_hub_cx_int_div_clk_src", 195 .parent_hws = (const struct clk_hw*[]){ 196 &gpu_cc_hub_clk_src.clkr.hw, 197 }, 198 .num_parents = 1, 199 .flags = CLK_SET_RATE_PARENT, 200 .ops = &clk_regmap_div_ro_ops, 201 }, 202 }; 203 204 static struct clk_branch gpu_cc_ahb_clk = { 205 .halt_reg = 0x1078, 206 .halt_check = BRANCH_HALT_DELAY, 207 .clkr = { 208 .enable_reg = 0x1078, 209 .enable_mask = BIT(0), 210 .hw.init = &(const struct clk_init_data){ 211 .name = "gpu_cc_ahb_clk", 212 .parent_hws = (const struct clk_hw*[]){ 213 &gpu_cc_hub_ahb_div_clk_src.clkr.hw, 214 }, 215 .num_parents = 1, 216 .flags = CLK_SET_RATE_PARENT, 217 .ops = &clk_branch2_ops, 218 }, 219 }, 220 }; 221 222 static struct clk_branch gpu_cc_crc_ahb_clk = { 223 .halt_reg = 0x107c, 224 .halt_check = BRANCH_HALT_VOTED, 225 .clkr = { 226 .enable_reg = 0x107c, 227 .enable_mask = BIT(0), 228 .hw.init = &(const struct clk_init_data){ 229 .name = "gpu_cc_crc_ahb_clk", 230 .parent_hws = (const struct clk_hw*[]){ 231 &gpu_cc_hub_ahb_div_clk_src.clkr.hw, 232 }, 233 .num_parents = 1, 234 .flags = CLK_SET_RATE_PARENT, 235 .ops = &clk_branch2_ops, 236 }, 237 }, 238 }; 239 240 static struct clk_branch gpu_cc_cx_gmu_clk = { 241 .halt_reg = 0x1098, 242 .halt_check = BRANCH_HALT, 243 .clkr = { 244 .enable_reg = 0x1098, 245 .enable_mask = BIT(0), 246 .hw.init = &(const struct clk_init_data){ 247 .name = "gpu_cc_cx_gmu_clk", 248 .parent_hws = (const struct clk_hw*[]){ 249 &gpu_cc_gmu_clk_src.clkr.hw, 250 }, 251 .num_parents = 1, 252 .flags = CLK_SET_RATE_PARENT, 253 .ops = &clk_branch2_aon_ops, 254 }, 255 }, 256 }; 257 258 static struct clk_branch gpu_cc_cx_snoc_dvm_clk = { 259 .halt_reg = 0x108c, 260 .halt_check = BRANCH_HALT_VOTED, 261 .clkr = { 262 .enable_reg = 0x108c, 263 .enable_mask = BIT(0), 264 .hw.init = &(const struct clk_init_data){ 265 .name = "gpu_cc_cx_snoc_dvm_clk", 266 .ops = &clk_branch2_ops, 267 }, 268 }, 269 }; 270 271 static struct clk_branch gpu_cc_cxo_aon_clk = { 272 .halt_reg = 0x1004, 273 .halt_check = BRANCH_HALT_VOTED, 274 .clkr = { 275 .enable_reg = 0x1004, 276 .enable_mask = BIT(0), 277 .hw.init = &(const struct clk_init_data){ 278 .name = "gpu_cc_cxo_aon_clk", 279 .ops = &clk_branch2_ops, 280 }, 281 }, 282 }; 283 284 static struct clk_branch gpu_cc_gx_gmu_clk = { 285 .halt_reg = 0x1064, 286 .halt_check = BRANCH_HALT, 287 .clkr = { 288 .enable_reg = 0x1064, 289 .enable_mask = BIT(0), 290 .hw.init = &(const struct clk_init_data){ 291 .name = "gpu_cc_gx_gmu_clk", 292 .parent_hws = (const struct clk_hw*[]){ 293 &gpu_cc_gmu_clk_src.clkr.hw, 294 }, 295 .num_parents = 1, 296 .flags = CLK_SET_RATE_PARENT, 297 .ops = &clk_branch2_ops, 298 }, 299 }, 300 }; 301 302 static struct clk_branch gpu_cc_hlos1_vote_gpu_smmu_clk = { 303 .halt_reg = 0x5000, 304 .halt_check = BRANCH_HALT_VOTED, 305 .clkr = { 306 .enable_reg = 0x5000, 307 .enable_mask = BIT(0), 308 .hw.init = &(const struct clk_init_data){ 309 .name = "gpu_cc_hlos1_vote_gpu_smmu_clk", 310 .ops = &clk_branch2_ops, 311 }, 312 }, 313 }; 314 315 static struct clk_branch gpu_cc_hub_aon_clk = { 316 .halt_reg = 0x1178, 317 .halt_check = BRANCH_HALT, 318 .clkr = { 319 .enable_reg = 0x1178, 320 .enable_mask = BIT(0), 321 .hw.init = &(const struct clk_init_data){ 322 .name = "gpu_cc_hub_aon_clk", 323 .parent_hws = (const struct clk_hw*[]){ 324 &gpu_cc_hub_clk_src.clkr.hw, 325 }, 326 .num_parents = 1, 327 .flags = CLK_SET_RATE_PARENT, 328 .ops = &clk_branch2_aon_ops, 329 }, 330 }, 331 }; 332 333 static struct clk_branch gpu_cc_hub_cx_int_clk = { 334 .halt_reg = 0x1204, 335 .halt_check = BRANCH_HALT, 336 .clkr = { 337 .enable_reg = 0x1204, 338 .enable_mask = BIT(0), 339 .hw.init = &(const struct clk_init_data){ 340 .name = "gpu_cc_hub_cx_int_clk", 341 .parent_hws = (const struct clk_hw*[]){ 342 &gpu_cc_hub_cx_int_div_clk_src.clkr.hw, 343 }, 344 .num_parents = 1, 345 .flags = CLK_SET_RATE_PARENT, 346 .ops = &clk_branch2_aon_ops, 347 }, 348 }, 349 }; 350 351 static struct clk_branch gpu_cc_sleep_clk = { 352 .halt_reg = 0x1090, 353 .halt_check = BRANCH_HALT_VOTED, 354 .clkr = { 355 .enable_reg = 0x1090, 356 .enable_mask = BIT(0), 357 .hw.init = &(const struct clk_init_data){ 358 .name = "gpu_cc_sleep_clk", 359 .ops = &clk_branch2_ops, 360 }, 361 }, 362 }; 363 364 static struct clk_regmap *gpu_cc_sc8280xp_clocks[] = { 365 [GPU_CC_AHB_CLK] = &gpu_cc_ahb_clk.clkr, 366 [GPU_CC_CRC_AHB_CLK] = &gpu_cc_crc_ahb_clk.clkr, 367 [GPU_CC_CX_GMU_CLK] = &gpu_cc_cx_gmu_clk.clkr, 368 [GPU_CC_CX_SNOC_DVM_CLK] = &gpu_cc_cx_snoc_dvm_clk.clkr, 369 [GPU_CC_CXO_AON_CLK] = &gpu_cc_cxo_aon_clk.clkr, 370 [GPU_CC_GMU_CLK_SRC] = &gpu_cc_gmu_clk_src.clkr, 371 [GPU_CC_GX_GMU_CLK] = &gpu_cc_gx_gmu_clk.clkr, 372 [GPU_CC_HLOS1_VOTE_GPU_SMMU_CLK] = &gpu_cc_hlos1_vote_gpu_smmu_clk.clkr, 373 [GPU_CC_HUB_AHB_DIV_CLK_SRC] = &gpu_cc_hub_ahb_div_clk_src.clkr, 374 [GPU_CC_HUB_AON_CLK] = &gpu_cc_hub_aon_clk.clkr, 375 [GPU_CC_HUB_CLK_SRC] = &gpu_cc_hub_clk_src.clkr, 376 [GPU_CC_HUB_CX_INT_CLK] = &gpu_cc_hub_cx_int_clk.clkr, 377 [GPU_CC_HUB_CX_INT_DIV_CLK_SRC] = &gpu_cc_hub_cx_int_div_clk_src.clkr, 378 [GPU_CC_PLL0] = &gpu_cc_pll0.clkr, 379 [GPU_CC_PLL1] = &gpu_cc_pll1.clkr, 380 [GPU_CC_SLEEP_CLK] = &gpu_cc_sleep_clk.clkr, 381 }; 382 383 static struct gdsc cx_gdsc = { 384 .gdscr = 0x106c, 385 .gds_hw_ctrl = 0x1540, 386 .pd = { 387 .name = "cx_gdsc", 388 }, 389 .pwrsts = PWRSTS_OFF_ON, 390 .flags = VOTABLE | RETAIN_FF_ENABLE, 391 }; 392 393 static struct gdsc gx_gdsc = { 394 .gdscr = 0x100c, 395 .clamp_io_ctrl = 0x1508, 396 .pd = { 397 .name = "gx_gdsc", 398 .power_on = gdsc_gx_do_nothing_enable, 399 }, 400 .pwrsts = PWRSTS_OFF_ON, 401 .flags = CLAMP_IO | RETAIN_FF_ENABLE, 402 .supply = "vdd-gfx", 403 }; 404 405 static struct gdsc *gpu_cc_sc8280xp_gdscs[] = { 406 [GPU_CC_CX_GDSC] = &cx_gdsc, 407 [GPU_CC_GX_GDSC] = &gx_gdsc, 408 }; 409 410 static const struct regmap_config gpu_cc_sc8280xp_regmap_config = { 411 .reg_bits = 32, 412 .reg_stride = 4, 413 .val_bits = 32, 414 .max_register = 0x8030, 415 .fast_io = true, 416 }; 417 418 static struct qcom_cc_desc gpu_cc_sc8280xp_desc = { 419 .config = &gpu_cc_sc8280xp_regmap_config, 420 .clks = gpu_cc_sc8280xp_clocks, 421 .num_clks = ARRAY_SIZE(gpu_cc_sc8280xp_clocks), 422 .gdscs = gpu_cc_sc8280xp_gdscs, 423 .num_gdscs = ARRAY_SIZE(gpu_cc_sc8280xp_gdscs), 424 }; 425 426 static int gpu_cc_sc8280xp_probe(struct platform_device *pdev) 427 { 428 struct regmap *regmap; 429 int ret; 430 431 ret = devm_pm_runtime_enable(&pdev->dev); 432 if (ret) 433 return ret; 434 435 ret = pm_runtime_resume_and_get(&pdev->dev); 436 if (ret) 437 return ret; 438 439 regmap = qcom_cc_map(pdev, &gpu_cc_sc8280xp_desc); 440 if (IS_ERR(regmap)) { 441 pm_runtime_put(&pdev->dev); 442 return PTR_ERR(regmap); 443 } 444 445 clk_lucid_pll_configure(&gpu_cc_pll0, regmap, &gpu_cc_pll0_config); 446 clk_lucid_pll_configure(&gpu_cc_pll1, regmap, &gpu_cc_pll1_config); 447 448 /* Keep some clocks always-on */ 449 qcom_branch_set_clk_en(regmap, 0x1170); /* GPU_CC_CB_CLK */ 450 qcom_branch_set_clk_en(regmap, 0x109c); /* GPU_CC_CXO_CLK */ 451 452 ret = qcom_cc_really_probe(pdev, &gpu_cc_sc8280xp_desc, regmap); 453 pm_runtime_put(&pdev->dev); 454 455 return ret; 456 } 457 458 static const struct of_device_id gpu_cc_sc8280xp_match_table[] = { 459 { .compatible = "qcom,sc8280xp-gpucc" }, 460 { } 461 }; 462 MODULE_DEVICE_TABLE(of, gpu_cc_sc8280xp_match_table); 463 464 static struct platform_driver gpu_cc_sc8280xp_driver = { 465 .probe = gpu_cc_sc8280xp_probe, 466 .driver = { 467 .name = "gpu_cc-sc8280xp", 468 .of_match_table = gpu_cc_sc8280xp_match_table, 469 }, 470 }; 471 module_platform_driver(gpu_cc_sc8280xp_driver); 472 473 MODULE_DESCRIPTION("Qualcomm SC8280XP GPU clock controller"); 474 MODULE_LICENSE("GPL"); 475