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1// SPDX-License-Identifier: GPL-2.0
2/*
3 * Copyright (c) 2018-2020, 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-sm8250.h>
12
13#include "common.h"
14#include "clk-alpha-pll.h"
15#include "clk-branch.h"
16#include "clk-pll.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
27enum {
28 P_BI_TCXO,
29 P_CORE_BI_PLL_TEST_SE,
30 P_GPLL0_OUT_MAIN,
31 P_GPLL0_OUT_MAIN_DIV,
32 P_GPU_CC_PLL0_OUT_MAIN,
33 P_GPU_CC_PLL1_OUT_MAIN,
34};
35
36static struct pll_vco lucid_vco[] = {
37 { 249600000, 2000000000, 0 },
38};
39
40static const struct alpha_pll_config gpu_cc_pll1_config = {
41 .l = 0x1a,
42 .alpha = 0xaaa,
43 .config_ctl_val = 0x20485699,
44 .config_ctl_hi_val = 0x00002261,
45 .config_ctl_hi1_val = 0x029a699c,
46 .user_ctl_val = 0x00000000,
47 .user_ctl_hi_val = 0x00000805,
48 .user_ctl_hi1_val = 0x00000000,
49};
50
51static struct clk_alpha_pll gpu_cc_pll1 = {
52 .offset = 0x100,
53 .vco_table = lucid_vco,
54 .num_vco = ARRAY_SIZE(lucid_vco),
55 .regs = clk_alpha_pll_regs[CLK_ALPHA_PLL_TYPE_LUCID],
56 .clkr = {
57 .hw.init = &(struct clk_init_data){
58 .name = "gpu_cc_pll1",
59 .parent_data = &(const struct clk_parent_data){
60 .fw_name = "bi_tcxo",
61 },
62 .num_parents = 1,
63 .ops = &clk_alpha_pll_lucid_ops,
64 },
65 },
66};
67
68static const struct parent_map gpu_cc_parent_map_0[] = {
69 { P_BI_TCXO, 0 },
70 { P_GPU_CC_PLL1_OUT_MAIN, 3 },
71 { P_GPLL0_OUT_MAIN, 5 },
72 { P_GPLL0_OUT_MAIN_DIV, 6 },
73};
74
75static const struct clk_parent_data gpu_cc_parent_data_0[] = {
76 { .fw_name = "bi_tcxo" },
77 { .hw = &gpu_cc_pll1.clkr.hw },
78 { .fw_name = "gcc_gpu_gpll0_clk_src" },
79 { .fw_name = "gcc_gpu_gpll0_div_clk_src" },
80};
81
82static const struct freq_tbl ftbl_gpu_cc_gmu_clk_src[] = {
83 F(19200000, P_BI_TCXO, 1, 0, 0),
84 F(200000000, P_GPLL0_OUT_MAIN_DIV, 1.5, 0, 0),
85 F(500000000, P_GPU_CC_PLL1_OUT_MAIN, 1, 0, 0),
86 { }
87};
88
89static struct clk_rcg2 gpu_cc_gmu_clk_src = {
90 .cmd_rcgr = 0x1120,
91 .mnd_width = 0,
92 .hid_width = 5,
93 .parent_map = gpu_cc_parent_map_0,
94 .freq_tbl = ftbl_gpu_cc_gmu_clk_src,
95 .clkr.hw.init = &(struct clk_init_data){
96 .name = "gpu_cc_gmu_clk_src",
97 .parent_data = gpu_cc_parent_data_0,
98 .num_parents = ARRAY_SIZE(gpu_cc_parent_data_0),
99 .flags = CLK_SET_RATE_PARENT,
100 .ops = &clk_rcg2_ops,
101 },
102};
103
104static struct clk_branch gpu_cc_ahb_clk = {
105 .halt_reg = 0x1078,
106 .halt_check = BRANCH_HALT_DELAY,
107 .clkr = {
108 .enable_reg = 0x1078,
109 .enable_mask = BIT(0),
110 .hw.init = &(struct clk_init_data){
111 .name = "gpu_cc_ahb_clk",
112 .ops = &clk_branch2_ops,
113 },
114 },
115};
116
117static struct clk_branch gpu_cc_crc_ahb_clk = {
118 .halt_reg = 0x107c,
119 .halt_check = BRANCH_HALT_VOTED,
120 .clkr = {
121 .enable_reg = 0x107c,
122 .enable_mask = BIT(0),
123 .hw.init = &(struct clk_init_data){
124 .name = "gpu_cc_crc_ahb_clk",
125 .ops = &clk_branch2_ops,
126 },
127 },
128};
129
130static struct clk_branch gpu_cc_cx_apb_clk = {
131 .halt_reg = 0x1088,
132 .halt_check = BRANCH_HALT_VOTED,
133 .clkr = {
134 .enable_reg = 0x1088,
135 .enable_mask = BIT(0),
136 .hw.init = &(struct clk_init_data){
137 .name = "gpu_cc_cx_apb_clk",
138 .ops = &clk_branch2_ops,
139 },
140 },
141};
142
143static struct clk_branch gpu_cc_cx_gmu_clk = {
144 .halt_reg = 0x1098,
145 .halt_check = BRANCH_HALT,
146 .clkr = {
147 .enable_reg = 0x1098,
148 .enable_mask = BIT(0),
149 .hw.init = &(struct clk_init_data){
150 .name = "gpu_cc_cx_gmu_clk",
151 .parent_data = &(const struct clk_parent_data){
152 .hw = &gpu_cc_gmu_clk_src.clkr.hw,
153 },
154 .num_parents = 1,
155 .flags = CLK_SET_RATE_PARENT,
156 .ops = &clk_branch2_ops,
157 },
158 },
159};
160
161static struct clk_branch gpu_cc_cx_snoc_dvm_clk = {
162 .halt_reg = 0x108c,
163 .halt_check = BRANCH_HALT_VOTED,
164 .clkr = {
165 .enable_reg = 0x108c,
166 .enable_mask = BIT(0),
167 .hw.init = &(struct clk_init_data){
168 .name = "gpu_cc_cx_snoc_dvm_clk",
169 .ops = &clk_branch2_ops,
170 },
171 },
172};
173
174static struct clk_branch gpu_cc_cxo_aon_clk = {
175 .halt_reg = 0x1004,
176 .halt_check = BRANCH_HALT_VOTED,
177 .clkr = {
178 .enable_reg = 0x1004,
179 .enable_mask = BIT(0),
180 .hw.init = &(struct clk_init_data){
181 .name = "gpu_cc_cxo_aon_clk",
182 .ops = &clk_branch2_ops,
183 },
184 },
185};
186
187static struct clk_branch gpu_cc_cxo_clk = {
188 .halt_reg = 0x109c,
189 .halt_check = BRANCH_HALT,
190 .clkr = {
191 .enable_reg = 0x109c,
192 .enable_mask = BIT(0),
193 .hw.init = &(struct clk_init_data){
194 .name = "gpu_cc_cxo_clk",
195 .ops = &clk_branch2_ops,
196 },
197 },
198};
199
200static struct clk_branch gpu_cc_gx_gmu_clk = {
201 .halt_reg = 0x1064,
202 .halt_check = BRANCH_HALT,
203 .clkr = {
204 .enable_reg = 0x1064,
205 .enable_mask = BIT(0),
206 .hw.init = &(struct clk_init_data){
207 .name = "gpu_cc_gx_gmu_clk",
208 .parent_data = &(const struct clk_parent_data){
209 .hw = &gpu_cc_gmu_clk_src.clkr.hw,
210 },
211 .num_parents = 1,
212 .flags = CLK_SET_RATE_PARENT,
213 .ops = &clk_branch2_ops,
214 },
215 },
216};
217
218static struct clk_branch gpu_cc_hlos1_vote_gpu_smmu_clk = {
219 .halt_reg = 0x5000,
220 .halt_check = BRANCH_VOTED,
221 .clkr = {
222 .enable_reg = 0x5000,
223 .enable_mask = BIT(0),
224 .hw.init = &(struct clk_init_data){
225 .name = "gpu_cc_hlos1_vote_gpu_smmu_clk",
226 .ops = &clk_branch2_ops,
227 },
228 },
229};
230
231static struct gdsc gpu_cx_gdsc = {
232 .gdscr = 0x106c,
233 .gds_hw_ctrl = 0x1540,
234 .pd = {
235 .name = "gpu_cx_gdsc",
236 },
237 .pwrsts = PWRSTS_OFF_ON,
238 .flags = VOTABLE,
239};
240
241static struct gdsc gpu_gx_gdsc = {
242 .gdscr = 0x100c,
243 .clamp_io_ctrl = 0x1508,
244 .pd = {
245 .name = "gpu_gx_gdsc",
246 .power_on = gdsc_gx_do_nothing_enable,
247 },
248 .pwrsts = PWRSTS_OFF_ON,
249 .flags = CLAMP_IO | AON_RESET | POLL_CFG_GDSCR,
250};
251
252static struct clk_regmap *gpu_cc_sm8250_clocks[] = {
253 [GPU_CC_AHB_CLK] = &gpu_cc_ahb_clk.clkr,
254 [GPU_CC_CRC_AHB_CLK] = &gpu_cc_crc_ahb_clk.clkr,
255 [GPU_CC_CX_APB_CLK] = &gpu_cc_cx_apb_clk.clkr,
256 [GPU_CC_CX_GMU_CLK] = &gpu_cc_cx_gmu_clk.clkr,
257 [GPU_CC_CX_SNOC_DVM_CLK] = &gpu_cc_cx_snoc_dvm_clk.clkr,
258 [GPU_CC_CXO_AON_CLK] = &gpu_cc_cxo_aon_clk.clkr,
259 [GPU_CC_CXO_CLK] = &gpu_cc_cxo_clk.clkr,
260 [GPU_CC_GMU_CLK_SRC] = &gpu_cc_gmu_clk_src.clkr,
261 [GPU_CC_GX_GMU_CLK] = &gpu_cc_gx_gmu_clk.clkr,
262 [GPU_CC_PLL1] = &gpu_cc_pll1.clkr,
263 [GPU_CC_HLOS1_VOTE_GPU_SMMU_CLK] = &gpu_cc_hlos1_vote_gpu_smmu_clk.clkr,
264};
265
266static const struct qcom_reset_map gpu_cc_sm8250_resets[] = {
267 [GPUCC_GPU_CC_ACD_BCR] = { 0x1160 },
268 [GPUCC_GPU_CC_CX_BCR] = { 0x1068 },
269 [GPUCC_GPU_CC_GFX3D_AON_BCR] = { 0x10a0 },
270 [GPUCC_GPU_CC_GMU_BCR] = { 0x111c },
271 [GPUCC_GPU_CC_GX_BCR] = { 0x1008 },
272 [GPUCC_GPU_CC_XO_BCR] = { 0x1000 },
273};
274
275static struct gdsc *gpu_cc_sm8250_gdscs[] = {
276 [GPU_CX_GDSC] = &gpu_cx_gdsc,
277 [GPU_GX_GDSC] = &gpu_gx_gdsc,
278};
279
280static const struct regmap_config gpu_cc_sm8250_regmap_config = {
281 .reg_bits = 32,
282 .reg_stride = 4,
283 .val_bits = 32,
284 .max_register = 0x8008,
285 .fast_io = true,
286};
287
288static const struct qcom_cc_desc gpu_cc_sm8250_desc = {
289 .config = &gpu_cc_sm8250_regmap_config,
290 .clks = gpu_cc_sm8250_clocks,
291 .num_clks = ARRAY_SIZE(gpu_cc_sm8250_clocks),
292 .resets = gpu_cc_sm8250_resets,
293 .num_resets = ARRAY_SIZE(gpu_cc_sm8250_resets),
294 .gdscs = gpu_cc_sm8250_gdscs,
295 .num_gdscs = ARRAY_SIZE(gpu_cc_sm8250_gdscs),
296};
297
298static const struct of_device_id gpu_cc_sm8250_match_table[] = {
299 { .compatible = "qcom,sm8250-gpucc" },
300 { }
301};
302MODULE_DEVICE_TABLE(of, gpu_cc_sm8250_match_table);
303
304static int gpu_cc_sm8250_probe(struct platform_device *pdev)
305{
306 struct regmap *regmap;
307 unsigned int value, mask;
308
309 regmap = qcom_cc_map(pdev, &gpu_cc_sm8250_desc);
310 if (IS_ERR(regmap))
311 return PTR_ERR(regmap);
312
313 clk_lucid_pll_configure(&gpu_cc_pll1, regmap, &gpu_cc_pll1_config);
314
315 /*
316 * Configure gpu_cc_cx_gmu_clk with recommended
317 * wakeup/sleep settings
318 */
319 mask = CX_GMU_CBCR_WAKE_MASK << CX_GMU_CBCR_WAKE_SHIFT;
320 mask |= CX_GMU_CBCR_SLEEP_MASK << CX_GMU_CBCR_SLEEP_SHIFT;
321 value = 0xf << CX_GMU_CBCR_WAKE_SHIFT | 0xf << CX_GMU_CBCR_SLEEP_SHIFT;
322 regmap_update_bits(regmap, 0x1098, mask, value);
323
324 return qcom_cc_really_probe(pdev, &gpu_cc_sm8250_desc, regmap);
325}
326
327static struct platform_driver gpu_cc_sm8250_driver = {
328 .probe = gpu_cc_sm8250_probe,
329 .driver = {
330 .name = "sm8250-gpucc",
331 .of_match_table = gpu_cc_sm8250_match_table,
332 },
333};
334
335static int __init gpu_cc_sm8250_init(void)
336{
337 return platform_driver_register(&gpu_cc_sm8250_driver);
338}
339subsys_initcall(gpu_cc_sm8250_init);
340
341static void __exit gpu_cc_sm8250_exit(void)
342{
343 platform_driver_unregister(&gpu_cc_sm8250_driver);
344}
345module_exit(gpu_cc_sm8250_exit);
346
347MODULE_DESCRIPTION("QTI GPU_CC SM8250 Driver");
348MODULE_LICENSE("GPL v2");