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
gpu_cc_sm6350_probe(struct platform_device * pdev)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, &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
gpu_cc_sm6350_init(void)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
gpu_cc_sm6350_exit(void)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");
530
