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 };
403
404 static struct gdsc *gpu_cc_sc8280xp_gdscs[] = {
405 [GPU_CC_CX_GDSC] = &cx_gdsc,
406 [GPU_CC_GX_GDSC] = &gx_gdsc,
407 };
408
409 static const struct regmap_config gpu_cc_sc8280xp_regmap_config = {
410 .reg_bits = 32,
411 .reg_stride = 4,
412 .val_bits = 32,
413 .max_register = 0x8030,
414 .fast_io = true,
415 };
416
417 static struct qcom_cc_desc gpu_cc_sc8280xp_desc = {
418 .config = &gpu_cc_sc8280xp_regmap_config,
419 .clks = gpu_cc_sc8280xp_clocks,
420 .num_clks = ARRAY_SIZE(gpu_cc_sc8280xp_clocks),
421 .gdscs = gpu_cc_sc8280xp_gdscs,
422 .num_gdscs = ARRAY_SIZE(gpu_cc_sc8280xp_gdscs),
423 };
424
gpu_cc_sc8280xp_probe(struct platform_device * pdev)425 static int gpu_cc_sc8280xp_probe(struct platform_device *pdev)
426 {
427 struct regmap *regmap;
428 int ret;
429
430 ret = devm_pm_runtime_enable(&pdev->dev);
431 if (ret)
432 return ret;
433
434 ret = pm_runtime_resume_and_get(&pdev->dev);
435 if (ret)
436 return ret;
437
438 regmap = qcom_cc_map(pdev, &gpu_cc_sc8280xp_desc);
439 if (IS_ERR(regmap)) {
440 pm_runtime_put(&pdev->dev);
441 return PTR_ERR(regmap);
442 }
443
444 clk_lucid_pll_configure(&gpu_cc_pll0, regmap, &gpu_cc_pll0_config);
445 clk_lucid_pll_configure(&gpu_cc_pll1, regmap, &gpu_cc_pll1_config);
446
447 /*
448 * Keep the clocks always-ON
449 * GPU_CC_CB_CLK, GPU_CC_CXO_CLK
450 */
451 regmap_update_bits(regmap, 0x1170, BIT(0), BIT(0));
452 regmap_update_bits(regmap, 0x109c, BIT(0), BIT(0));
453
454 ret = qcom_cc_really_probe(pdev, &gpu_cc_sc8280xp_desc, regmap);
455 pm_runtime_put(&pdev->dev);
456
457 return ret;
458 }
459
460 static const struct of_device_id gpu_cc_sc8280xp_match_table[] = {
461 { .compatible = "qcom,sc8280xp-gpucc" },
462 { }
463 };
464 MODULE_DEVICE_TABLE(of, gpu_cc_sc8280xp_match_table);
465
466 static struct platform_driver gpu_cc_sc8280xp_driver = {
467 .probe = gpu_cc_sc8280xp_probe,
468 .driver = {
469 .name = "gpu_cc-sc8280xp",
470 .of_match_table = gpu_cc_sc8280xp_match_table,
471 },
472 };
473 module_platform_driver(gpu_cc_sc8280xp_driver);
474
475 MODULE_DESCRIPTION("Qualcomm SC8280XP GPU clock controller");
476 MODULE_LICENSE("GPL");
477