drivers/clk/qcom/gpucc-sm6350.c

   1 // SPDX-License-Identifier: GPL-2.0-only
   2 /*
   3  * Copyright (c) 2021, The Linux Foundation. All rights reserved.
   4  * Copyright (c) 2021, Konrad Dybcio <konrad.dybcio@somainline.org>
   5  */
   6
   7 #include <linux/clk-provider.h>
   8 #include <linux/module.h>
   9 #include <linux/platform_device.h>
  10 #include <linux/regmap.h>
  11
  12 #include <dt-bindings/clock/qcom,gpucc-sm6350.h>
  13
  14 #include "common.h"
  15 #include "clk-alpha-pll.h"
  16 #include "clk-branch.h"
  17 #include "clk-rcg.h"
  18 #include "clk-regmap.h"
  19 #include "reset.h"
  20 #include "gdsc.h"
  21
  22 #define CX_GMU_CBCR_SLEEP_MASK          0xF
  23 #define CX_GMU_CBCR_SLEEP_SHIFT         4
  24 #define CX_GMU_CBCR_WAKE_MASK           0xF
  25 #define CX_GMU_CBCR_WAKE_SHIFT          8
  26
  27 enum {
  28         DT_BI_TCXO,
  29         DT_GPLL0_OUT_MAIN,
  30         DT_GPLL0_OUT_MAIN_DIV,
  31 };
  32
  33 enum {
  34         P_BI_TCXO,
  35         P_GPLL0_OUT_MAIN,
  36         P_GPLL0_OUT_MAIN_DIV,
  37         P_GPU_CC_PLL0_OUT_MAIN,
  38         P_GPU_CC_PLL0_OUT_ODD,
  39         P_GPU_CC_PLL1_OUT_EVEN,
  40         P_GPU_CC_PLL1_OUT_MAIN,
  41         P_GPU_CC_PLL1_OUT_ODD,
  42         P_CRC_DIV,
  43 };
  44
  45 static const struct pll_vco fabia_vco[] = {
  46         { 249600000, 2000000000, 0 },
  47 };
  48
  49 /* 506MHz Configuration*/
  50 static const struct alpha_pll_config gpu_cc_pll0_config = {
  51         .l = 0x1A,
  52         .alpha = 0x5AAA,
  53         .config_ctl_val = 0x20485699,
  54         .config_ctl_hi_val = 0x00002067,
  55         .test_ctl_val = 0x40000000,
  56         .test_ctl_hi_val = 0x00000002,
  57         .user_ctl_val = 0x00000001,
  58         .user_ctl_hi_val = 0x00004805,
  59 };
  60
  61 static struct clk_alpha_pll gpu_cc_pll0 = {
  62         .offset = 0x0,
  63         .vco_table = fabia_vco,
  64         .num_vco = ARRAY_SIZE(fabia_vco),
  65         .regs = clk_alpha_pll_regs[CLK_ALPHA_PLL_TYPE_FABIA],
  66         .clkr = {
  67                 .hw.init = &(struct clk_init_data){
  68                         .name = "gpu_cc_pll0",
  69                         .parent_data =  &(const struct clk_parent_data){
  70                                 .index = DT_BI_TCXO,
  71                                 .fw_name = "bi_tcxo",
  72                         },
  73                         .num_parents = 1,
  74                         .ops = &clk_alpha_pll_fabia_ops,
  75                 },
  76         },
  77 };
  78
  79 static struct clk_fixed_factor crc_div = {
  80         .mult = 1,
  81         .div = 2,
  82         .hw.init = &(struct clk_init_data){
  83                 .name = "crc_div",
  84                 .parent_hws = (const struct clk_hw*[]){
  85                         &gpu_cc_pll0.clkr.hw,
  86                 },
  87                 .num_parents = 1,
  88                 .flags = CLK_SET_RATE_PARENT,
  89                 .ops = &clk_fixed_factor_ops,
  90         },
  91 };
  92
  93 /* 514MHz Configuration*/
  94 static const struct alpha_pll_config gpu_cc_pll1_config = {
  95         .l = 0x1A,
  96         .alpha = 0xC555,
  97         .config_ctl_val = 0x20485699,
  98         .config_ctl_hi_val = 0x00002067,
  99         .test_ctl_val = 0x40000000,
 100         .test_ctl_hi_val = 0x00000002,
 101         .user_ctl_val = 0x00000001,
 102         .user_ctl_hi_val = 0x00004805,
 103 };
 104
 105 static struct clk_alpha_pll gpu_cc_pll1 = {
 106         .offset = 0x100,
 107         .vco_table = fabia_vco,
 108         .num_vco = ARRAY_SIZE(fabia_vco),
 109         .regs = clk_alpha_pll_regs[CLK_ALPHA_PLL_TYPE_FABIA],
 110         .clkr = {
 111                 .hw.init = &(struct clk_init_data){
 112                         .name = "gpu_cc_pll1",
 113                         .parent_data =  &(const struct clk_parent_data){
 114                                 .index = DT_BI_TCXO,
 115                                 .fw_name = "bi_tcxo",
 116                         },
 117                         .num_parents = 1,
 118                         .ops = &clk_alpha_pll_fabia_ops,
 119                 },
 120         },
 121 };
 122
 123 static const struct parent_map gpu_cc_parent_map_0[] = {
 124         { P_BI_TCXO, 0 },
 125         { P_GPU_CC_PLL0_OUT_MAIN, 1 },
 126         { P_GPU_CC_PLL1_OUT_MAIN, 3 },
 127         { P_GPLL0_OUT_MAIN, 5 },
 128         { P_GPLL0_OUT_MAIN_DIV, 6 },
 129 };
 130
 131 static const struct clk_parent_data gpu_cc_parent_data_0[] = {
 132         { .index = DT_BI_TCXO, .fw_name = "bi_tcxo" },
 133         { .hw = &gpu_cc_pll0.clkr.hw },
 134         { .hw = &gpu_cc_pll1.clkr.hw },
 135         { .index = DT_GPLL0_OUT_MAIN, .fw_name = "gcc_gpu_gpll0_clk_src" },
 136         { .index = DT_GPLL0_OUT_MAIN_DIV, .fw_name = "gcc_gpu_gpll0_div_clk_src" },
 137 };
 138
 139 static const struct parent_map gpu_cc_parent_map_1[] = {
 140         { P_BI_TCXO, 0 },
 141         { P_CRC_DIV, 1 },
 142         { P_GPU_CC_PLL0_OUT_ODD, 2 },
 143         { P_GPU_CC_PLL1_OUT_EVEN, 3 },
 144         { P_GPU_CC_PLL1_OUT_ODD, 4 },
 145         { P_GPLL0_OUT_MAIN, 5 },
 146 };
 147
 148 static const struct clk_parent_data gpu_cc_parent_data_1[] = {
 149         { .index = DT_BI_TCXO, .fw_name = "bi_tcxo" },
 150         { .hw = &crc_div.hw },
 151         { .hw = &gpu_cc_pll0.clkr.hw },
 152         { .hw = &gpu_cc_pll1.clkr.hw },
 153         { .hw = &gpu_cc_pll1.clkr.hw },
 154         { .index = DT_GPLL0_OUT_MAIN, .fw_name = "gcc_gpu_gpll0_clk_src" },
 155 };
 156
 157 static const struct freq_tbl ftbl_gpu_cc_gmu_clk_src[] = {
 158         F(200000000, P_GPLL0_OUT_MAIN_DIV, 1.5, 0, 0),
 159         { }
 160 };
 161
 162 static struct clk_rcg2 gpu_cc_gmu_clk_src = {
 163         .cmd_rcgr = 0x1120,
 164         .mnd_width = 0,
 165         .hid_width = 5,
 166         .parent_map = gpu_cc_parent_map_0,
 167         .freq_tbl = ftbl_gpu_cc_gmu_clk_src,
 168         .clkr.hw.init = &(struct clk_init_data){
 169                 .name = "gpu_cc_gmu_clk_src",
 170                 .parent_data = gpu_cc_parent_data_0,
 171                 .num_parents = ARRAY_SIZE(gpu_cc_parent_data_0),
 172                 .flags = CLK_SET_RATE_PARENT,
 173                 .ops = &clk_rcg2_ops,
 174         },
 175 };
 176
 177 static const struct freq_tbl ftbl_gpu_cc_gx_gfx3d_clk_src[] = {
 178         F(253000000, P_CRC_DIV, 1, 0, 0),
 179         F(355000000, P_CRC_DIV, 1, 0, 0),
 180         F(430000000, P_CRC_DIV, 1, 0, 0),
 181         F(565000000, P_CRC_DIV, 1, 0, 0),
 182         F(650000000, P_CRC_DIV, 1, 0, 0),
 183         F(800000000, P_CRC_DIV, 1, 0, 0),
 184         F(825000000, P_CRC_DIV, 1, 0, 0),
 185         F(850000000, P_CRC_DIV, 1, 0, 0),
 186         { }
 187 };
 188
 189 static struct clk_rcg2 gpu_cc_gx_gfx3d_clk_src = {
 190         .cmd_rcgr = 0x101c,
 191         .mnd_width = 0,
 192         .hid_width = 5,
 193         .parent_map = gpu_cc_parent_map_1,
 194         .freq_tbl = ftbl_gpu_cc_gx_gfx3d_clk_src,
 195         .clkr.hw.init = &(struct clk_init_data){
 196                 .name = "gpu_cc_gx_gfx3d_clk_src",
 197                 .parent_data = gpu_cc_parent_data_1,
 198                 .num_parents = ARRAY_SIZE(gpu_cc_parent_data_1),
 199                 .flags = CLK_SET_RATE_PARENT,
 200                 .ops = &clk_rcg2_ops,
 201         },
 202 };
 203
 204 static struct clk_branch gpu_cc_acd_ahb_clk = {
 205         .halt_reg = 0x1168,
 206         .halt_check = BRANCH_HALT,
 207         .clkr = {
 208                 .enable_reg = 0x1168,
 209                 .enable_mask = BIT(0),
 210                 .hw.init = &(struct clk_init_data){
 211                         .name = "gpu_cc_acd_ahb_clk",
 212                         .ops = &clk_branch2_ops,
 213                 },
 214         },
 215 };
 216
 217 static struct clk_branch gpu_cc_acd_cxo_clk = {
 218         .halt_reg = 0x1164,
 219         .halt_check = BRANCH_HALT,
 220         .clkr = {
 221                 .enable_reg = 0x1164,
 222                 .enable_mask = BIT(0),
 223                 .hw.init = &(struct clk_init_data){
 224                         .name = "gpu_cc_acd_cxo_clk",
 225                         .ops = &clk_branch2_ops,
 226                 },
 227         },
 228 };
 229
 230 static struct clk_branch gpu_cc_ahb_clk = {
 231         .halt_reg = 0x1078,
 232         .halt_check = BRANCH_HALT_DELAY,
 233         .clkr = {
 234                 .enable_reg = 0x1078,
 235                 .enable_mask = BIT(0),
 236                 .hw.init = &(struct clk_init_data){
 237                         .name = "gpu_cc_ahb_clk",
 238                         .flags = CLK_IS_CRITICAL,
 239                         .ops = &clk_branch2_ops,
 240                 },
 241         },
 242 };
 243
 244 static struct clk_branch gpu_cc_crc_ahb_clk = {
 245         .halt_reg = 0x107c,
 246         .halt_check = BRANCH_HALT_DELAY,
 247         .clkr = {
 248                 .enable_reg = 0x107c,
 249                 .enable_mask = BIT(0),
 250                 .hw.init = &(struct clk_init_data){
 251                         .name = "gpu_cc_crc_ahb_clk",
 252                         .ops = &clk_branch2_ops,
 253                 },
 254         },
 255 };
 256
 257 static struct clk_branch gpu_cc_cx_gfx3d_clk = {
 258         .halt_reg = 0x10a4,
 259         .halt_check = BRANCH_HALT_DELAY,
 260         .clkr = {
 261                 .enable_reg = 0x10a4,
 262                 .enable_mask = BIT(0),
 263                 .hw.init = &(struct clk_init_data){
 264                         .name = "gpu_cc_cx_gfx3d_clk",
 265                         .parent_hws = (const struct clk_hw*[]){
 266                                 &gpu_cc_gx_gfx3d_clk_src.clkr.hw,
 267                         },
 268                         .num_parents = 1,
 269                         .flags = CLK_SET_RATE_PARENT,
 270                         .ops = &clk_branch2_ops,
 271                 },
 272         },
 273 };
 274
 275 static struct clk_branch gpu_cc_cx_gfx3d_slv_clk = {
 276         .halt_reg = 0x10a8,
 277         .halt_check = BRANCH_HALT_DELAY,
 278         .clkr = {
 279                 .enable_reg = 0x10a8,
 280                 .enable_mask = BIT(0),
 281                 .hw.init = &(struct clk_init_data){
 282                         .name = "gpu_cc_cx_gfx3d_slv_clk",
 283                         .parent_hws = (const struct clk_hw*[]){
 284                                 &gpu_cc_gx_gfx3d_clk_src.clkr.hw,
 285                         },
 286                         .num_parents = 1,
 287                         .flags = CLK_SET_RATE_PARENT,
 288                         .ops = &clk_branch2_ops,
 289                 },
 290         },
 291 };
 292
 293 static struct clk_branch gpu_cc_cx_gmu_clk = {
 294         .halt_reg = 0x1098,
 295         .halt_check = BRANCH_HALT,
 296         .clkr = {
 297                 .enable_reg = 0x1098,
 298                 .enable_mask = BIT(0),
 299                 .hw.init = &(struct clk_init_data){
 300                         .name = "gpu_cc_cx_gmu_clk",
 301                         .parent_hws = (const struct clk_hw*[]){
 302                                 &gpu_cc_gmu_clk_src.clkr.hw,
 303                         },
 304                         .num_parents = 1,
 305                         .flags = CLK_SET_RATE_PARENT,
 306                         .ops = &clk_branch2_ops,
 307                 },
 308         },
 309 };
 310
 311 static struct clk_branch gpu_cc_cx_snoc_dvm_clk = {
 312         .halt_reg = 0x108c,
 313         .halt_check = BRANCH_HALT_DELAY,
 314         .clkr = {
 315                 .enable_reg = 0x108c,
 316                 .enable_mask = BIT(0),
 317                 .hw.init = &(struct clk_init_data){
 318                         .name = "gpu_cc_cx_snoc_dvm_clk",
 319                         .ops = &clk_branch2_ops,
 320                 },
 321         },
 322 };
 323
 324 static struct clk_branch gpu_cc_cxo_aon_clk = {
 325         .halt_reg = 0x1004,
 326         .halt_check = BRANCH_HALT_DELAY,
 327         .clkr = {
 328                 .enable_reg = 0x1004,
 329                 .enable_mask = BIT(0),
 330                 .hw.init = &(struct clk_init_data){
 331                         .name = "gpu_cc_cxo_aon_clk",
 332                         .ops = &clk_branch2_ops,
 333                 },
 334         },
 335 };
 336
 337 static struct clk_branch gpu_cc_cxo_clk = {
 338         .halt_reg = 0x109c,
 339         .halt_check = BRANCH_HALT,
 340         .clkr = {
 341                 .enable_reg = 0x109c,
 342                 .enable_mask = BIT(0),
 343                 .hw.init = &(struct clk_init_data){
 344                         .name = "gpu_cc_cxo_clk",
 345                         .ops = &clk_branch2_ops,
 346                 },
 347         },
 348 };
 349
 350 static struct clk_branch gpu_cc_gx_cxo_clk = {
 351         .halt_reg = 0x1060,
 352         .halt_check = BRANCH_HALT,
 353         .clkr = {
 354                 .enable_reg = 0x1060,
 355                 .enable_mask = BIT(0),
 356                 .hw.init = &(struct clk_init_data){
 357                         .name = "gpu_cc_gx_cxo_clk",
 358                         .ops = &clk_branch2_ops,
 359                 },
 360         },
 361 };
 362
 363 static struct clk_branch gpu_cc_gx_gfx3d_clk = {
 364         .halt_reg = 0x1054,
 365         .halt_check = BRANCH_HALT_SKIP,
 366         .clkr = {
 367                 .enable_reg = 0x1054,
 368                 .enable_mask = BIT(0),
 369                 .hw.init = &(struct clk_init_data){
 370                         .name = "gpu_cc_gx_gfx3d_clk",
 371                         .parent_hws = (const struct clk_hw*[]){
 372                                 &gpu_cc_gx_gfx3d_clk_src.clkr.hw,
 373                         },
 374                         .num_parents = 1,
 375                         .flags = CLK_SET_RATE_PARENT,
 376                         .ops = &clk_branch2_ops,
 377                 },
 378         },
 379 };
 380
 381 static struct clk_branch gpu_cc_gx_gmu_clk = {
 382         .halt_reg = 0x1064,
 383         .halt_check = BRANCH_HALT,
 384         .clkr = {
 385                 .enable_reg = 0x1064,
 386                 .enable_mask = BIT(0),
 387                 .hw.init = &(struct clk_init_data){
 388                         .name = "gpu_cc_gx_gmu_clk",
 389                         .parent_hws = (const struct clk_hw*[]){
 390                                 &gpu_cc_gmu_clk_src.clkr.hw,
 391                         },
 392                         .num_parents = 1,
 393                         .flags = CLK_SET_RATE_PARENT,
 394                         .ops = &clk_branch2_ops,
 395                 },
 396         },
 397 };
 398
 399 static struct clk_branch gpu_cc_gx_vsense_clk = {
 400         .halt_reg = 0x1058,
 401         .halt_check = BRANCH_HALT_DELAY,
 402         .clkr = {
 403                 .enable_reg = 0x1058,
 404                 .enable_mask = BIT(0),
 405                 .hw.init = &(struct clk_init_data){
 406                         .name = "gpu_cc_gx_vsense_clk",
 407                         .ops = &clk_branch2_ops,
 408                 },
 409         },
 410 };
 411
 412 static struct gdsc gpu_cx_gdsc = {
 413         .gdscr = 0x106c,
 414         .gds_hw_ctrl = 0x1540,
 415         .pd = {
 416                 .name = "gpu_cx_gdsc",
 417         },
 418         .pwrsts = PWRSTS_OFF_ON,
 419         .flags = VOTABLE,
 420 };
 421
 422 static struct gdsc gpu_gx_gdsc = {
 423         .gdscr = 0x100c,
 424         .clamp_io_ctrl = 0x1508,
 425         .pd = {
 426                 .name = "gpu_gx_gdsc",
 427                 .power_on = gdsc_gx_do_nothing_enable,
 428         },
 429         .pwrsts = PWRSTS_OFF_ON,
 430         .flags = CLAMP_IO | POLL_CFG_GDSCR,
 431 };
 432
 433 static struct clk_hw *gpu_cc_sm6350_hws[] = {
 434         [GPU_CC_CRC_DIV] = &crc_div.hw,
 435 };
 436
 437 static struct clk_regmap *gpu_cc_sm6350_clocks[] = {
 438         [GPU_CC_ACD_AHB_CLK] = &gpu_cc_acd_ahb_clk.clkr,
 439         [GPU_CC_ACD_CXO_CLK] = &gpu_cc_acd_cxo_clk.clkr,
 440         [GPU_CC_AHB_CLK] = &gpu_cc_ahb_clk.clkr,
 441         [GPU_CC_CRC_AHB_CLK] = &gpu_cc_crc_ahb_clk.clkr,
 442         [GPU_CC_CX_GFX3D_CLK] = &gpu_cc_cx_gfx3d_clk.clkr,
 443         [GPU_CC_CX_GFX3D_SLV_CLK] = &gpu_cc_cx_gfx3d_slv_clk.clkr,
 444         [GPU_CC_CX_GMU_CLK] = &gpu_cc_cx_gmu_clk.clkr,
 445         [GPU_CC_CX_SNOC_DVM_CLK] = &gpu_cc_cx_snoc_dvm_clk.clkr,
 446         [GPU_CC_CXO_AON_CLK] = &gpu_cc_cxo_aon_clk.clkr,
 447         [GPU_CC_CXO_CLK] = &gpu_cc_cxo_clk.clkr,
 448         [GPU_CC_GMU_CLK_SRC] = &gpu_cc_gmu_clk_src.clkr,
 449         [GPU_CC_GX_CXO_CLK] = &gpu_cc_gx_cxo_clk.clkr,
 450         [GPU_CC_GX_GFX3D_CLK] = &gpu_cc_gx_gfx3d_clk.clkr,
 451         [GPU_CC_GX_GFX3D_CLK_SRC] = &gpu_cc_gx_gfx3d_clk_src.clkr,
 452         [GPU_CC_GX_GMU_CLK] = &gpu_cc_gx_gmu_clk.clkr,
 453         [GPU_CC_GX_VSENSE_CLK] = &gpu_cc_gx_vsense_clk.clkr,
 454         [GPU_CC_PLL0] = &gpu_cc_pll0.clkr,
 455         [GPU_CC_PLL1] = &gpu_cc_pll1.clkr,
 456 };
 457
 458 static struct gdsc *gpu_cc_sm6350_gdscs[] = {
 459         [GPU_CX_GDSC] = &gpu_cx_gdsc,
 460         [GPU_GX_GDSC] = &gpu_gx_gdsc,
 461 };
 462
 463 static const struct regmap_config gpu_cc_sm6350_regmap_config = {
 464         .reg_bits = 32,
 465         .reg_stride = 4,
 466         .val_bits = 32,
 467         .max_register = 0x8008,
 468         .fast_io = true,
 469 };
 470
 471 static const struct qcom_cc_desc gpu_cc_sm6350_desc = {
 472         .config = &gpu_cc_sm6350_regmap_config,
 473         .clk_hws = gpu_cc_sm6350_hws,
 474         .num_clk_hws = ARRAY_SIZE(gpu_cc_sm6350_hws),
 475         .clks = gpu_cc_sm6350_clocks,
 476         .num_clks = ARRAY_SIZE(gpu_cc_sm6350_clocks),
 477         .gdscs = gpu_cc_sm6350_gdscs,
 478         .num_gdscs = ARRAY_SIZE(gpu_cc_sm6350_gdscs),
 479 };
 480
 481 static const struct of_device_id gpu_cc_sm6350_match_table[] = {
 482         { .compatible = "qcom,sm6350-gpucc" },
 483         { }
 484 };
 485 MODULE_DEVICE_TABLE(of, gpu_cc_sm6350_match_table);
 486
 487 static int gpu_cc_sm6350_probe(struct platform_device *pdev)
 488 {
 489         struct regmap *regmap;
 490         unsigned int value, mask;
 491
 492         regmap = qcom_cc_map(pdev, &gpu_cc_sm6350_desc);
 493         if (IS_ERR(regmap))
 494                 return PTR_ERR(regmap);
 495
 496         clk_fabia_pll_configure(&gpu_cc_pll0, regmap, &gpu_cc_pll0_config);
 497         clk_fabia_pll_configure(&gpu_cc_pll1, regmap, &gpu_cc_pll1_config);
 498
 499         /* Configure gpu_cc_cx_gmu_clk with recommended wakeup/sleep settings */
 500         mask = CX_GMU_CBCR_WAKE_MASK << CX_GMU_CBCR_WAKE_SHIFT;
 501         mask |= CX_GMU_CBCR_SLEEP_MASK << CX_GMU_CBCR_SLEEP_SHIFT;
 502         value = 0xF << CX_GMU_CBCR_WAKE_SHIFT | 0xF << CX_GMU_CBCR_SLEEP_SHIFT;
 503         regmap_update_bits(regmap, 0x1098, mask, value);
 504
 505         return qcom_cc_really_probe(&pdev->dev, &gpu_cc_sm6350_desc, regmap);
 506 }
 507
 508 static struct platform_driver gpu_cc_sm6350_driver = {
 509         .probe = gpu_cc_sm6350_probe,
 510         .driver = {
 511                 .name = "sm6350-gpucc",
 512                 .of_match_table = gpu_cc_sm6350_match_table,
 513         },
 514 };
 515
 516 static int __init gpu_cc_sm6350_init(void)
 517 {
 518         return platform_driver_register(&gpu_cc_sm6350_driver);
 519 }
 520 core_initcall(gpu_cc_sm6350_init);
 521
 522 static void __exit gpu_cc_sm6350_exit(void)
 523 {
 524         platform_driver_unregister(&gpu_cc_sm6350_driver);
 525 }
 526 module_exit(gpu_cc_sm6350_exit);
 527
 528 MODULE_DESCRIPTION("QTI GPU_CC LAGOON Driver");
 529 MODULE_LICENSE("GPL v2");