1 // SPDX-License-Identifier: GPL-2.0-only 2 /* 3 * Copyright (c) 2020, The Linux Foundation. All rights reserved. 4 * Copyright (c) 2020, AngeloGioacchino Del Regno 5 * <angelogioacchino.delregno@somainline.org> 6 */ 7 8 #include <linux/bitops.h> 9 #include <linux/clk.h> 10 #include <linux/clk-provider.h> 11 #include <linux/err.h> 12 #include <linux/kernel.h> 13 #include <linux/module.h> 14 #include <linux/platform_device.h> 15 #include <linux/of.h> 16 #include <linux/of_device.h> 17 #include <linux/regmap.h> 18 #include <linux/reset-controller.h> 19 #include <dt-bindings/clock/qcom,gpucc-sdm660.h> 20 21 #include "clk-alpha-pll.h" 22 #include "common.h" 23 #include "clk-regmap.h" 24 #include "clk-pll.h" 25 #include "clk-rcg.h" 26 #include "clk-branch.h" 27 #include "gdsc.h" 28 #include "reset.h" 29 30 enum { 31 P_GPU_XO, 32 P_GPLL0_OUT_MAIN, 33 P_GPLL0_OUT_MAIN_DIV, 34 P_GPU_PLL0_PLL_OUT_MAIN, 35 P_GPU_PLL1_PLL_OUT_MAIN, 36 }; 37 38 static struct clk_branch gpucc_cxo_clk = { 39 .halt_reg = 0x1020, 40 .clkr = { 41 .enable_reg = 0x1020, 42 .enable_mask = BIT(0), 43 .hw.init = &(struct clk_init_data){ 44 .name = "gpucc_cxo_clk", 45 .parent_data = &(const struct clk_parent_data){ 46 .fw_name = "xo" 47 }, 48 .num_parents = 1, 49 .ops = &clk_branch2_ops, 50 .flags = CLK_IS_CRITICAL, 51 }, 52 }, 53 }; 54 55 static struct pll_vco gpu_vco[] = { 56 { 1000000000, 2000000000, 0 }, 57 { 500000000, 1000000000, 2 }, 58 { 250000000, 500000000, 3 }, 59 }; 60 61 static struct clk_alpha_pll gpu_pll0_pll_out_main = { 62 .offset = 0x0, 63 .regs = clk_alpha_pll_regs[CLK_ALPHA_PLL_TYPE_DEFAULT], 64 .vco_table = gpu_vco, 65 .num_vco = ARRAY_SIZE(gpu_vco), 66 .clkr.hw.init = &(struct clk_init_data){ 67 .name = "gpu_pll0_pll_out_main", 68 .parent_data = &(const struct clk_parent_data){ 69 .hw = &gpucc_cxo_clk.clkr.hw, 70 }, 71 .num_parents = 1, 72 .ops = &clk_alpha_pll_ops, 73 }, 74 }; 75 76 static struct clk_alpha_pll gpu_pll1_pll_out_main = { 77 .offset = 0x40, 78 .regs = clk_alpha_pll_regs[CLK_ALPHA_PLL_TYPE_DEFAULT], 79 .vco_table = gpu_vco, 80 .num_vco = ARRAY_SIZE(gpu_vco), 81 .clkr.hw.init = &(struct clk_init_data){ 82 .name = "gpu_pll1_pll_out_main", 83 .parent_data = &(const struct clk_parent_data){ 84 .hw = &gpucc_cxo_clk.clkr.hw, 85 }, 86 .num_parents = 1, 87 .ops = &clk_alpha_pll_ops, 88 }, 89 }; 90 91 static const struct parent_map gpucc_parent_map_1[] = { 92 { P_GPU_XO, 0 }, 93 { P_GPU_PLL0_PLL_OUT_MAIN, 1 }, 94 { P_GPU_PLL1_PLL_OUT_MAIN, 3 }, 95 { P_GPLL0_OUT_MAIN, 5 }, 96 }; 97 98 static const struct clk_parent_data gpucc_parent_data_1[] = { 99 { .hw = &gpucc_cxo_clk.clkr.hw }, 100 { .hw = &gpu_pll0_pll_out_main.clkr.hw }, 101 { .hw = &gpu_pll1_pll_out_main.clkr.hw }, 102 { .fw_name = "gcc_gpu_gpll0_clk" }, 103 }; 104 105 static struct clk_rcg2_gfx3d gfx3d_clk_src = { 106 .div = 2, 107 .rcg = { 108 .cmd_rcgr = 0x1070, 109 .mnd_width = 0, 110 .hid_width = 5, 111 .parent_map = gpucc_parent_map_1, 112 .clkr.hw.init = &(struct clk_init_data){ 113 .name = "gfx3d_clk_src", 114 .parent_data = gpucc_parent_data_1, 115 .num_parents = ARRAY_SIZE(gpucc_parent_data_1), 116 .ops = &clk_gfx3d_ops, 117 .flags = CLK_SET_RATE_PARENT | CLK_OPS_PARENT_ENABLE, 118 }, 119 }, 120 .hws = (struct clk_hw*[]){ 121 &gpucc_cxo_clk.clkr.hw, 122 &gpu_pll0_pll_out_main.clkr.hw, 123 &gpu_pll1_pll_out_main.clkr.hw, 124 } 125 }; 126 127 static struct clk_branch gpucc_gfx3d_clk = { 128 .halt_reg = 0x1098, 129 .halt_check = BRANCH_HALT, 130 .hwcg_reg = 0x1098, 131 .hwcg_bit = 1, 132 .clkr = { 133 .enable_reg = 0x1098, 134 .enable_mask = BIT(0), 135 .hw.init = &(struct clk_init_data){ 136 .name = "gpucc_gfx3d_clk", 137 .parent_data = &(const struct clk_parent_data){ 138 .hw = &gfx3d_clk_src.rcg.clkr.hw, 139 }, 140 .num_parents = 1, 141 .ops = &clk_branch2_ops, 142 .flags = CLK_SET_RATE_PARENT, 143 }, 144 }, 145 }; 146 147 static const struct parent_map gpucc_parent_map_0[] = { 148 { P_GPU_XO, 0 }, 149 { P_GPLL0_OUT_MAIN, 5 }, 150 { P_GPLL0_OUT_MAIN_DIV, 6 }, 151 }; 152 153 static const struct clk_parent_data gpucc_parent_data_0[] = { 154 { .hw = &gpucc_cxo_clk.clkr.hw }, 155 { .fw_name = "gcc_gpu_gpll0_clk" }, 156 { .fw_name = "gcc_gpu_gpll0_div_clk" }, 157 }; 158 159 static const struct freq_tbl ftbl_rbbmtimer_clk_src[] = { 160 F(19200000, P_GPU_XO, 1, 0, 0), 161 { } 162 }; 163 164 static struct clk_rcg2 rbbmtimer_clk_src = { 165 .cmd_rcgr = 0x10b0, 166 .mnd_width = 0, 167 .hid_width = 5, 168 .parent_map = gpucc_parent_map_0, 169 .freq_tbl = ftbl_rbbmtimer_clk_src, 170 .clkr.hw.init = &(struct clk_init_data){ 171 .name = "rbbmtimer_clk_src", 172 .parent_data = gpucc_parent_data_0, 173 .num_parents = ARRAY_SIZE(gpucc_parent_data_0), 174 .ops = &clk_rcg2_ops, 175 }, 176 }; 177 178 static const struct freq_tbl ftbl_rbcpr_clk_src[] = { 179 F(19200000, P_GPU_XO, 1, 0, 0), 180 F(50000000, P_GPLL0_OUT_MAIN_DIV, 6, 0, 0), 181 { } 182 }; 183 184 static struct clk_rcg2 rbcpr_clk_src = { 185 .cmd_rcgr = 0x1030, 186 .mnd_width = 0, 187 .hid_width = 5, 188 .parent_map = gpucc_parent_map_0, 189 .freq_tbl = ftbl_rbcpr_clk_src, 190 .clkr.hw.init = &(struct clk_init_data){ 191 .name = "rbcpr_clk_src", 192 .parent_data = gpucc_parent_data_0, 193 .num_parents = ARRAY_SIZE(gpucc_parent_data_0), 194 .ops = &clk_rcg2_ops, 195 }, 196 }; 197 198 static struct clk_branch gpucc_rbbmtimer_clk = { 199 .halt_reg = 0x10d0, 200 .halt_check = BRANCH_HALT, 201 .clkr = { 202 .enable_reg = 0x10d0, 203 .enable_mask = BIT(0), 204 .hw.init = &(struct clk_init_data){ 205 .name = "gpucc_rbbmtimer_clk", 206 .parent_hws = (const struct clk_hw*[]){ 207 &rbbmtimer_clk_src.clkr.hw, 208 }, 209 .num_parents = 1, 210 .flags = CLK_SET_RATE_PARENT, 211 .ops = &clk_branch2_ops, 212 }, 213 }, 214 }; 215 216 static struct clk_branch gpucc_rbcpr_clk = { 217 .halt_reg = 0x1054, 218 .halt_check = BRANCH_HALT, 219 .clkr = { 220 .enable_reg = 0x1054, 221 .enable_mask = BIT(0), 222 .hw.init = &(struct clk_init_data){ 223 .name = "gpucc_rbcpr_clk", 224 .parent_hws = (const struct clk_hw*[]){ 225 &rbcpr_clk_src.clkr.hw, 226 }, 227 .num_parents = 1, 228 .flags = CLK_SET_RATE_PARENT, 229 .ops = &clk_branch2_ops, 230 }, 231 }, 232 }; 233 234 static struct gdsc gpu_cx_gdsc = { 235 .gdscr = 0x1004, 236 .gds_hw_ctrl = 0x1008, 237 .pd = { 238 .name = "gpu_cx", 239 }, 240 .pwrsts = PWRSTS_OFF_ON, 241 .flags = VOTABLE, 242 }; 243 244 static struct gdsc gpu_gx_gdsc = { 245 .gdscr = 0x1094, 246 .clamp_io_ctrl = 0x130, 247 .resets = (unsigned int []){ GPU_GX_BCR }, 248 .reset_count = 1, 249 .cxcs = (unsigned int []){ 0x1098 }, 250 .cxc_count = 1, 251 .pd = { 252 .name = "gpu_gx", 253 }, 254 .parent = &gpu_cx_gdsc.pd, 255 .pwrsts = PWRSTS_OFF | PWRSTS_ON | PWRSTS_RET, 256 .flags = CLAMP_IO | SW_RESET | AON_RESET | NO_RET_PERIPH, 257 }; 258 259 static struct gdsc *gpucc_sdm660_gdscs[] = { 260 [GPU_CX_GDSC] = &gpu_cx_gdsc, 261 [GPU_GX_GDSC] = &gpu_gx_gdsc, 262 }; 263 264 static const struct qcom_reset_map gpucc_sdm660_resets[] = { 265 [GPU_CX_BCR] = { 0x1000 }, 266 [RBCPR_BCR] = { 0x1050 }, 267 [GPU_GX_BCR] = { 0x1090 }, 268 [SPDM_BCR] = { 0x10E0 }, 269 }; 270 271 static struct clk_regmap *gpucc_sdm660_clocks[] = { 272 [GPUCC_CXO_CLK] = &gpucc_cxo_clk.clkr, 273 [GPU_PLL0_PLL] = &gpu_pll0_pll_out_main.clkr, 274 [GPU_PLL1_PLL] = &gpu_pll1_pll_out_main.clkr, 275 [GFX3D_CLK_SRC] = &gfx3d_clk_src.rcg.clkr, 276 [RBCPR_CLK_SRC] = &rbcpr_clk_src.clkr, 277 [RBBMTIMER_CLK_SRC] = &rbbmtimer_clk_src.clkr, 278 [GPUCC_RBCPR_CLK] = &gpucc_rbcpr_clk.clkr, 279 [GPUCC_GFX3D_CLK] = &gpucc_gfx3d_clk.clkr, 280 [GPUCC_RBBMTIMER_CLK] = &gpucc_rbbmtimer_clk.clkr, 281 }; 282 283 static const struct regmap_config gpucc_660_regmap_config = { 284 .reg_bits = 32, 285 .reg_stride = 4, 286 .val_bits = 32, 287 .max_register = 0x9034, 288 .fast_io = true, 289 }; 290 291 static const struct qcom_cc_desc gpucc_sdm660_desc = { 292 .config = &gpucc_660_regmap_config, 293 .clks = gpucc_sdm660_clocks, 294 .num_clks = ARRAY_SIZE(gpucc_sdm660_clocks), 295 .resets = gpucc_sdm660_resets, 296 .num_resets = ARRAY_SIZE(gpucc_sdm660_resets), 297 .gdscs = gpucc_sdm660_gdscs, 298 .num_gdscs = ARRAY_SIZE(gpucc_sdm660_gdscs), 299 }; 300 301 static const struct of_device_id gpucc_sdm660_match_table[] = { 302 { .compatible = "qcom,gpucc-sdm660" }, 303 { .compatible = "qcom,gpucc-sdm630" }, 304 { } 305 }; 306 MODULE_DEVICE_TABLE(of, gpucc_sdm660_match_table); 307 308 static int gpucc_sdm660_probe(struct platform_device *pdev) 309 { 310 struct regmap *regmap; 311 struct alpha_pll_config gpu_pll_config = { 312 .config_ctl_val = 0x4001055b, 313 .alpha = 0xaaaaab00, 314 .alpha_en_mask = BIT(24), 315 .vco_val = 0x2 << 20, 316 .vco_mask = 0x3 << 20, 317 .main_output_mask = 0x1, 318 }; 319 320 regmap = qcom_cc_map(pdev, &gpucc_sdm660_desc); 321 if (IS_ERR(regmap)) 322 return PTR_ERR(regmap); 323 324 /* 800MHz configuration for GPU PLL0 */ 325 gpu_pll_config.l = 0x29; 326 gpu_pll_config.alpha_hi = 0xaa; 327 clk_alpha_pll_configure(&gpu_pll0_pll_out_main, regmap, &gpu_pll_config); 328 329 /* 740MHz configuration for GPU PLL1 */ 330 gpu_pll_config.l = 0x26; 331 gpu_pll_config.alpha_hi = 0x8a; 332 clk_alpha_pll_configure(&gpu_pll1_pll_out_main, regmap, &gpu_pll_config); 333 334 return qcom_cc_really_probe(pdev, &gpucc_sdm660_desc, regmap); 335 } 336 337 static struct platform_driver gpucc_sdm660_driver = { 338 .probe = gpucc_sdm660_probe, 339 .driver = { 340 .name = "gpucc-sdm660", 341 .of_match_table = gpucc_sdm660_match_table, 342 }, 343 }; 344 module_platform_driver(gpucc_sdm660_driver); 345 346 MODULE_DESCRIPTION("Qualcomm SDM630/SDM660 GPUCC Driver"); 347 MODULE_LICENSE("GPL v2"); 348