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/module.h>
8 #include <linux/platform_device.h>
9 #include <linux/regmap.h>
10
11 #include <dt-bindings/clock/qcom,gpucc-sc7280.h>
12
13 #include "clk-alpha-pll.h"
14 #include "clk-branch.h"
15 #include "clk-rcg.h"
16 #include "clk-regmap-divider.h"
17 #include "common.h"
18 #include "reset.h"
19 #include "gdsc.h"
20
21 enum {
22 P_BI_TCXO,
23 P_GCC_GPU_GPLL0_CLK_SRC,
24 P_GCC_GPU_GPLL0_DIV_CLK_SRC,
25 P_GPU_CC_PLL0_OUT_MAIN,
26 P_GPU_CC_PLL1_OUT_MAIN,
27 };
28
29 static const struct pll_vco lucid_vco[] = {
30 { 249600000, 2000000000, 0 },
31 };
32
33 static struct clk_alpha_pll gpu_cc_pll0 = {
34 .offset = 0x0,
35 .vco_table = lucid_vco,
36 .num_vco = ARRAY_SIZE(lucid_vco),
37 .regs = clk_alpha_pll_regs[CLK_ALPHA_PLL_TYPE_LUCID],
38 .clkr = {
39 .hw.init = &(struct clk_init_data){
40 .name = "gpu_cc_pll0",
41 .parent_data = &(const struct clk_parent_data){
42 .fw_name = "bi_tcxo",
43 },
44 .num_parents = 1,
45 .ops = &clk_alpha_pll_lucid_ops,
46 },
47 },
48 };
49
50 /* 500MHz Configuration */
51 static const struct alpha_pll_config gpu_cc_pll1_config = {
52 .l = 0x1A,
53 .alpha = 0xAAA,
54 .config_ctl_val = 0x20485699,
55 .config_ctl_hi_val = 0x00002261,
56 .config_ctl_hi1_val = 0x329A299C,
57 .user_ctl_val = 0x00000001,
58 .user_ctl_hi_val = 0x00000805,
59 .user_ctl_hi1_val = 0x00000000,
60 };
61
62 static struct clk_alpha_pll gpu_cc_pll1 = {
63 .offset = 0x100,
64 .vco_table = lucid_vco,
65 .num_vco = ARRAY_SIZE(lucid_vco),
66 .regs = clk_alpha_pll_regs[CLK_ALPHA_PLL_TYPE_LUCID],
67 .clkr = {
68 .hw.init = &(struct clk_init_data){
69 .name = "gpu_cc_pll1",
70 .parent_data = &(const struct clk_parent_data){
71 .fw_name = "bi_tcxo",
72 },
73 .num_parents = 1,
74 .ops = &clk_alpha_pll_lucid_ops,
75 },
76 },
77 };
78
79 static const struct parent_map gpu_cc_parent_map_0[] = {
80 { P_BI_TCXO, 0 },
81 { P_GPU_CC_PLL0_OUT_MAIN, 1 },
82 { P_GPU_CC_PLL1_OUT_MAIN, 3 },
83 { P_GCC_GPU_GPLL0_CLK_SRC, 5 },
84 { P_GCC_GPU_GPLL0_DIV_CLK_SRC, 6 },
85 };
86
87 static const struct clk_parent_data gpu_cc_parent_data_0[] = {
88 { .fw_name = "bi_tcxo" },
89 { .hw = &gpu_cc_pll0.clkr.hw },
90 { .hw = &gpu_cc_pll1.clkr.hw },
91 { .fw_name = "gcc_gpu_gpll0_clk_src" },
92 { .fw_name = "gcc_gpu_gpll0_div_clk_src" },
93 };
94
95 static const struct parent_map gpu_cc_parent_map_1[] = {
96 { P_BI_TCXO, 0 },
97 { P_GPU_CC_PLL1_OUT_MAIN, 3 },
98 { P_GCC_GPU_GPLL0_CLK_SRC, 5 },
99 { P_GCC_GPU_GPLL0_DIV_CLK_SRC, 6 },
100 };
101
102 static const struct clk_parent_data gpu_cc_parent_data_1[] = {
103 { .fw_name = "bi_tcxo", },
104 { .hw = &gpu_cc_pll1.clkr.hw },
105 { .fw_name = "gcc_gpu_gpll0_clk_src", },
106 { .fw_name = "gcc_gpu_gpll0_div_clk_src", },
107 };
108
109 static const struct freq_tbl ftbl_gpu_cc_gmu_clk_src[] = {
110 F(19200000, P_BI_TCXO, 1, 0, 0),
111 F(200000000, P_GCC_GPU_GPLL0_DIV_CLK_SRC, 1.5, 0, 0),
112 F(500000000, P_GPU_CC_PLL1_OUT_MAIN, 1, 0, 0),
113 { }
114 };
115
116 static struct clk_rcg2 gpu_cc_gmu_clk_src = {
117 .cmd_rcgr = 0x1120,
118 .mnd_width = 0,
119 .hid_width = 5,
120 .parent_map = gpu_cc_parent_map_0,
121 .freq_tbl = ftbl_gpu_cc_gmu_clk_src,
122 .clkr.hw.init = &(struct clk_init_data){
123 .name = "gpu_cc_gmu_clk_src",
124 .parent_data = gpu_cc_parent_data_0,
125 .num_parents = ARRAY_SIZE(gpu_cc_parent_data_0),
126 .ops = &clk_rcg2_shared_ops,
127 },
128 };
129
130 static const struct freq_tbl ftbl_gpu_cc_hub_clk_src[] = {
131 F(150000000, P_GCC_GPU_GPLL0_DIV_CLK_SRC, 2, 0, 0),
132 F(240000000, P_GCC_GPU_GPLL0_CLK_SRC, 2.5, 0, 0),
133 F(300000000, P_GCC_GPU_GPLL0_CLK_SRC, 2, 0, 0),
134 { }
135 };
136
137 static struct clk_rcg2 gpu_cc_hub_clk_src = {
138 .cmd_rcgr = 0x117c,
139 .mnd_width = 0,
140 .hid_width = 5,
141 .parent_map = gpu_cc_parent_map_1,
142 .freq_tbl = ftbl_gpu_cc_hub_clk_src,
143 .clkr.hw.init = &(struct clk_init_data){
144 .name = "gpu_cc_hub_clk_src",
145 .parent_data = gpu_cc_parent_data_1,
146 .num_parents = ARRAY_SIZE(gpu_cc_parent_data_1),
147 .ops = &clk_rcg2_shared_ops,
148 },
149 };
150
151 static struct clk_regmap_div gpu_cc_hub_ahb_div_clk_src = {
152 .reg = 0x11c0,
153 .shift = 0,
154 .width = 4,
155 .clkr.hw.init = &(struct clk_init_data) {
156 .name = "gpu_cc_hub_ahb_div_clk_src",
157 .parent_hws = (const struct clk_hw*[]){
158 &gpu_cc_hub_clk_src.clkr.hw,
159 },
160 .num_parents = 1,
161 .flags = CLK_SET_RATE_PARENT,
162 .ops = &clk_regmap_div_ro_ops,
163 },
164 };
165
166 static struct clk_regmap_div gpu_cc_hub_cx_int_div_clk_src = {
167 .reg = 0x11bc,
168 .shift = 0,
169 .width = 4,
170 .clkr.hw.init = &(struct clk_init_data) {
171 .name = "gpu_cc_hub_cx_int_div_clk_src",
172 .parent_hws = (const struct clk_hw*[]){
173 &gpu_cc_hub_clk_src.clkr.hw,
174 },
175 .num_parents = 1,
176 .flags = CLK_SET_RATE_PARENT,
177 .ops = &clk_regmap_div_ro_ops,
178 },
179 };
180
181 static struct clk_branch gpu_cc_ahb_clk = {
182 .halt_reg = 0x1078,
183 .halt_check = BRANCH_HALT_DELAY,
184 .clkr = {
185 .enable_reg = 0x1078,
186 .enable_mask = BIT(0),
187 .hw.init = &(struct clk_init_data){
188 .name = "gpu_cc_ahb_clk",
189 .parent_hws = (const struct clk_hw*[]){
190 &gpu_cc_hub_ahb_div_clk_src.clkr.hw,
191 },
192 .num_parents = 1,
193 .flags = CLK_SET_RATE_PARENT,
194 .ops = &clk_branch2_ops,
195 },
196 },
197 };
198
199 static struct clk_branch gpu_cc_crc_ahb_clk = {
200 .halt_reg = 0x107c,
201 .halt_check = BRANCH_HALT_VOTED,
202 .clkr = {
203 .enable_reg = 0x107c,
204 .enable_mask = BIT(0),
205 .hw.init = &(struct clk_init_data){
206 .name = "gpu_cc_crc_ahb_clk",
207 .parent_hws = (const struct clk_hw*[]){
208 &gpu_cc_hub_ahb_div_clk_src.clkr.hw,
209 },
210 .num_parents = 1,
211 .flags = CLK_SET_RATE_PARENT,
212 .ops = &clk_branch2_ops,
213 },
214 },
215 };
216
217 static struct clk_branch gpu_cc_cx_gmu_clk = {
218 .halt_reg = 0x1098,
219 .halt_check = BRANCH_HALT,
220 .clkr = {
221 .enable_reg = 0x1098,
222 .enable_mask = BIT(0),
223 .hw.init = &(struct clk_init_data){
224 .name = "gpu_cc_cx_gmu_clk",
225 .parent_hws = (const struct clk_hw*[]){
226 &gpu_cc_gmu_clk_src.clkr.hw,
227 },
228 .num_parents = 1,
229 .flags = CLK_SET_RATE_PARENT,
230 .ops = &clk_branch2_aon_ops,
231 },
232 },
233 };
234
235 static struct clk_branch gpu_cc_cx_snoc_dvm_clk = {
236 .halt_reg = 0x108c,
237 .halt_check = BRANCH_HALT_VOTED,
238 .clkr = {
239 .enable_reg = 0x108c,
240 .enable_mask = BIT(0),
241 .hw.init = &(struct clk_init_data){
242 .name = "gpu_cc_cx_snoc_dvm_clk",
243 .ops = &clk_branch2_ops,
244 },
245 },
246 };
247
248 static struct clk_branch gpu_cc_cxo_aon_clk = {
249 .halt_reg = 0x1004,
250 .halt_check = BRANCH_HALT_VOTED,
251 .clkr = {
252 .enable_reg = 0x1004,
253 .enable_mask = BIT(0),
254 .hw.init = &(struct clk_init_data){
255 .name = "gpu_cc_cxo_aon_clk",
256 .ops = &clk_branch2_ops,
257 },
258 },
259 };
260
261 static struct clk_branch gpu_cc_cxo_clk = {
262 .halt_reg = 0x109c,
263 .halt_check = BRANCH_HALT,
264 .clkr = {
265 .enable_reg = 0x109c,
266 .enable_mask = BIT(0),
267 .hw.init = &(struct clk_init_data){
268 .name = "gpu_cc_cxo_clk",
269 .ops = &clk_branch2_aon_ops,
270 },
271 },
272 };
273
274 static struct clk_branch gpu_cc_gx_gmu_clk = {
275 .halt_reg = 0x1064,
276 .halt_check = BRANCH_HALT,
277 .clkr = {
278 .enable_reg = 0x1064,
279 .enable_mask = BIT(0),
280 .hw.init = &(struct clk_init_data){
281 .name = "gpu_cc_gx_gmu_clk",
282 .parent_hws = (const struct clk_hw*[]){
283 &gpu_cc_gmu_clk_src.clkr.hw,
284 },
285 .num_parents = 1,
286 .flags = CLK_SET_RATE_PARENT,
287 .ops = &clk_branch2_ops,
288 },
289 },
290 };
291
292 static struct clk_branch gpu_cc_hlos1_vote_gpu_smmu_clk = {
293 .halt_reg = 0x5000,
294 .halt_check = BRANCH_VOTED,
295 .clkr = {
296 .enable_reg = 0x5000,
297 .enable_mask = BIT(0),
298 .hw.init = &(struct clk_init_data){
299 .name = "gpu_cc_hlos1_vote_gpu_smmu_clk",
300 .ops = &clk_branch2_ops,
301 },
302 },
303 };
304
305 static struct clk_branch gpu_cc_hub_aon_clk = {
306 .halt_reg = 0x1178,
307 .halt_check = BRANCH_HALT,
308 .clkr = {
309 .enable_reg = 0x1178,
310 .enable_mask = BIT(0),
311 .hw.init = &(struct clk_init_data){
312 .name = "gpu_cc_hub_aon_clk",
313 .parent_hws = (const struct clk_hw*[]){
314 &gpu_cc_hub_clk_src.clkr.hw,
315 },
316 .num_parents = 1,
317 .flags = CLK_SET_RATE_PARENT,
318 .ops = &clk_branch2_aon_ops,
319 },
320 },
321 };
322
323 static struct clk_branch gpu_cc_hub_cx_int_clk = {
324 .halt_reg = 0x1204,
325 .halt_check = BRANCH_HALT,
326 .clkr = {
327 .enable_reg = 0x1204,
328 .enable_mask = BIT(0),
329 .hw.init = &(struct clk_init_data){
330 .name = "gpu_cc_hub_cx_int_clk",
331 .parent_hws = (const struct clk_hw*[]){
332 &gpu_cc_hub_cx_int_div_clk_src.clkr.hw,
333 },
334 .num_parents = 1,
335 .flags = CLK_SET_RATE_PARENT,
336 .ops = &clk_branch2_aon_ops,
337 },
338 },
339 };
340
341 static struct clk_branch gpu_cc_mnd1x_0_gfx3d_clk = {
342 .halt_reg = 0x802c,
343 .halt_check = BRANCH_HALT_SKIP,
344 .clkr = {
345 .enable_reg = 0x802c,
346 .enable_mask = BIT(0),
347 .hw.init = &(struct clk_init_data){
348 .name = "gpu_cc_mnd1x_0_gfx3d_clk",
349 .ops = &clk_branch2_ops,
350 },
351 },
352 };
353
354 static struct clk_branch gpu_cc_mnd1x_1_gfx3d_clk = {
355 .halt_reg = 0x8030,
356 .halt_check = BRANCH_HALT_SKIP,
357 .clkr = {
358 .enable_reg = 0x8030,
359 .enable_mask = BIT(0),
360 .hw.init = &(struct clk_init_data){
361 .name = "gpu_cc_mnd1x_1_gfx3d_clk",
362 .ops = &clk_branch2_ops,
363 },
364 },
365 };
366
367 static struct clk_branch gpu_cc_sleep_clk = {
368 .halt_reg = 0x1090,
369 .halt_check = BRANCH_HALT_VOTED,
370 .clkr = {
371 .enable_reg = 0x1090,
372 .enable_mask = BIT(0),
373 .hw.init = &(struct clk_init_data){
374 .name = "gpu_cc_sleep_clk",
375 .ops = &clk_branch2_ops,
376 },
377 },
378 };
379
380 static struct gdsc cx_gdsc = {
381 .gdscr = 0x106c,
382 .gds_hw_ctrl = 0x1540,
383 .pd = {
384 .name = "cx_gdsc",
385 },
386 .pwrsts = PWRSTS_OFF_ON,
387 .flags = VOTABLE | RETAIN_FF_ENABLE,
388 };
389
390 static struct gdsc gx_gdsc = {
391 .gdscr = 0x100c,
392 .clamp_io_ctrl = 0x1508,
393 .pd = {
394 .name = "gx_gdsc",
395 .power_on = gdsc_gx_do_nothing_enable,
396 },
397 .pwrsts = PWRSTS_OFF_ON,
398 .flags = CLAMP_IO | RETAIN_FF_ENABLE,
399 };
400
401 static struct gdsc *gpu_cc_sc7180_gdscs[] = {
402 [GPU_CC_CX_GDSC] = &cx_gdsc,
403 [GPU_CC_GX_GDSC] = &gx_gdsc,
404 };
405
406 static struct clk_regmap *gpu_cc_sc7280_clocks[] = {
407 [GPU_CC_AHB_CLK] = &gpu_cc_ahb_clk.clkr,
408 [GPU_CC_CRC_AHB_CLK] = &gpu_cc_crc_ahb_clk.clkr,
409 [GPU_CC_CX_GMU_CLK] = &gpu_cc_cx_gmu_clk.clkr,
410 [GPU_CC_CX_SNOC_DVM_CLK] = &gpu_cc_cx_snoc_dvm_clk.clkr,
411 [GPU_CC_CXO_AON_CLK] = &gpu_cc_cxo_aon_clk.clkr,
412 [GPU_CC_CXO_CLK] = &gpu_cc_cxo_clk.clkr,
413 [GPU_CC_GMU_CLK_SRC] = &gpu_cc_gmu_clk_src.clkr,
414 [GPU_CC_GX_GMU_CLK] = &gpu_cc_gx_gmu_clk.clkr,
415 [GPU_CC_HLOS1_VOTE_GPU_SMMU_CLK] = &gpu_cc_hlos1_vote_gpu_smmu_clk.clkr,
416 [GPU_CC_HUB_AHB_DIV_CLK_SRC] = &gpu_cc_hub_ahb_div_clk_src.clkr,
417 [GPU_CC_HUB_AON_CLK] = &gpu_cc_hub_aon_clk.clkr,
418 [GPU_CC_HUB_CLK_SRC] = &gpu_cc_hub_clk_src.clkr,
419 [GPU_CC_HUB_CX_INT_CLK] = &gpu_cc_hub_cx_int_clk.clkr,
420 [GPU_CC_HUB_CX_INT_DIV_CLK_SRC] = &gpu_cc_hub_cx_int_div_clk_src.clkr,
421 [GPU_CC_MND1X_0_GFX3D_CLK] = &gpu_cc_mnd1x_0_gfx3d_clk.clkr,
422 [GPU_CC_MND1X_1_GFX3D_CLK] = &gpu_cc_mnd1x_1_gfx3d_clk.clkr,
423 [GPU_CC_PLL0] = &gpu_cc_pll0.clkr,
424 [GPU_CC_PLL1] = &gpu_cc_pll1.clkr,
425 [GPU_CC_SLEEP_CLK] = &gpu_cc_sleep_clk.clkr,
426 };
427
428 static const struct regmap_config gpu_cc_sc7280_regmap_config = {
429 .reg_bits = 32,
430 .reg_stride = 4,
431 .val_bits = 32,
432 .max_register = 0x8030,
433 .fast_io = true,
434 };
435
436 static const struct qcom_cc_desc gpu_cc_sc7280_desc = {
437 .config = &gpu_cc_sc7280_regmap_config,
438 .clks = gpu_cc_sc7280_clocks,
439 .num_clks = ARRAY_SIZE(gpu_cc_sc7280_clocks),
440 .gdscs = gpu_cc_sc7180_gdscs,
441 .num_gdscs = ARRAY_SIZE(gpu_cc_sc7180_gdscs),
442 };
443
444 static const struct of_device_id gpu_cc_sc7280_match_table[] = {
445 { .compatible = "qcom,sc7280-gpucc" },
446 { }
447 };
448 MODULE_DEVICE_TABLE(of, gpu_cc_sc7280_match_table);
449
gpu_cc_sc7280_probe(struct platform_device * pdev)450 static int gpu_cc_sc7280_probe(struct platform_device *pdev)
451 {
452 struct regmap *regmap;
453
454 regmap = qcom_cc_map(pdev, &gpu_cc_sc7280_desc);
455 if (IS_ERR(regmap))
456 return PTR_ERR(regmap);
457
458 clk_lucid_pll_configure(&gpu_cc_pll1, regmap, &gpu_cc_pll1_config);
459
460 /*
461 * Keep the clocks always-ON
462 * GPU_CC_CB_CLK, GPUCC_CX_GMU_CLK
463 */
464 regmap_update_bits(regmap, 0x1170, BIT(0), BIT(0));
465 regmap_update_bits(regmap, 0x1098, BIT(0), BIT(0));
466
467 return qcom_cc_really_probe(pdev, &gpu_cc_sc7280_desc, regmap);
468 }
469
470 static struct platform_driver gpu_cc_sc7280_driver = {
471 .probe = gpu_cc_sc7280_probe,
472 .driver = {
473 .name = "gpu_cc-sc7280",
474 .of_match_table = gpu_cc_sc7280_match_table,
475 },
476 };
477
gpu_cc_sc7280_init(void)478 static int __init gpu_cc_sc7280_init(void)
479 {
480 return platform_driver_register(&gpu_cc_sc7280_driver);
481 }
482 subsys_initcall(gpu_cc_sc7280_init);
483
gpu_cc_sc7280_exit(void)484 static void __exit gpu_cc_sc7280_exit(void)
485 {
486 platform_driver_unregister(&gpu_cc_sc7280_driver);
487 }
488 module_exit(gpu_cc_sc7280_exit);
489
490 MODULE_DESCRIPTION("QTI GPU_CC SC7280 Driver");
491 MODULE_LICENSE("GPL v2");
492