1 // SPDX-License-Identifier: GPL-2.0-only
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/pm_runtime.h>
10 #include <linux/regmap.h>
11 
12 #include <dt-bindings/clock/qcom,videocc-sm8250.h>
13 
14 #include "clk-alpha-pll.h"
15 #include "clk-branch.h"
16 #include "clk-rcg.h"
17 #include "clk-regmap.h"
18 #include "clk-regmap-divider.h"
19 #include "common.h"
20 #include "reset.h"
21 #include "gdsc.h"
22 
23 enum {
24 	P_BI_TCXO,
25 	P_VIDEO_PLL0_OUT_MAIN,
26 	P_VIDEO_PLL1_OUT_MAIN,
27 };
28 
29 static struct pll_vco lucid_vco[] = {
30 	{ 249600000, 2000000000, 0 },
31 };
32 
33 static const struct alpha_pll_config video_pll0_config = {
34 	.l = 0x25,
35 	.alpha = 0x8000,
36 	.config_ctl_val = 0x20485699,
37 	.config_ctl_hi_val = 0x00002261,
38 	.config_ctl_hi1_val = 0x329A699C,
39 	.user_ctl_val = 0x00000000,
40 	.user_ctl_hi_val = 0x00000805,
41 	.user_ctl_hi1_val = 0x00000000,
42 };
43 
44 static struct clk_alpha_pll video_pll0 = {
45 	.offset = 0x42c,
46 	.vco_table = lucid_vco,
47 	.num_vco = ARRAY_SIZE(lucid_vco),
48 	.regs = clk_alpha_pll_regs[CLK_ALPHA_PLL_TYPE_LUCID],
49 	.clkr = {
50 		.hw.init = &(struct clk_init_data){
51 			.name = "video_pll0",
52 			.parent_data = &(const struct clk_parent_data){
53 				.fw_name = "bi_tcxo",
54 			},
55 			.num_parents = 1,
56 			.ops = &clk_alpha_pll_lucid_ops,
57 		},
58 	},
59 };
60 
61 static const struct alpha_pll_config video_pll1_config = {
62 	.l = 0x2B,
63 	.alpha = 0xC000,
64 	.config_ctl_val = 0x20485699,
65 	.config_ctl_hi_val = 0x00002261,
66 	.config_ctl_hi1_val = 0x329A699C,
67 	.user_ctl_val = 0x00000000,
68 	.user_ctl_hi_val = 0x00000805,
69 	.user_ctl_hi1_val = 0x00000000,
70 };
71 
72 static struct clk_alpha_pll video_pll1 = {
73 	.offset = 0x7d0,
74 	.vco_table = lucid_vco,
75 	.num_vco = ARRAY_SIZE(lucid_vco),
76 	.regs = clk_alpha_pll_regs[CLK_ALPHA_PLL_TYPE_LUCID],
77 	.clkr = {
78 		.hw.init = &(struct clk_init_data){
79 			.name = "video_pll1",
80 			.parent_data = &(const struct clk_parent_data){
81 				.fw_name = "bi_tcxo",
82 			},
83 			.num_parents = 1,
84 			.ops = &clk_alpha_pll_lucid_ops,
85 		},
86 	},
87 };
88 
89 static const struct parent_map video_cc_parent_map_1[] = {
90 	{ P_BI_TCXO, 0 },
91 	{ P_VIDEO_PLL0_OUT_MAIN, 1 },
92 };
93 
94 static const struct clk_parent_data video_cc_parent_data_1[] = {
95 	{ .fw_name = "bi_tcxo" },
96 	{ .hw = &video_pll0.clkr.hw },
97 };
98 
99 static const struct parent_map video_cc_parent_map_2[] = {
100 	{ P_BI_TCXO, 0 },
101 	{ P_VIDEO_PLL1_OUT_MAIN, 1 },
102 };
103 
104 static const struct clk_parent_data video_cc_parent_data_2[] = {
105 	{ .fw_name = "bi_tcxo" },
106 	{ .hw = &video_pll1.clkr.hw },
107 };
108 
109 static const struct freq_tbl ftbl_video_cc_mvs0_clk_src[] = {
110 	F(19200000, P_BI_TCXO, 1, 0, 0),
111 	F(720000000, P_VIDEO_PLL0_OUT_MAIN, 1, 0, 0),
112 	F(1014000000, P_VIDEO_PLL0_OUT_MAIN, 1, 0, 0),
113 	F(1098000000, P_VIDEO_PLL0_OUT_MAIN, 1, 0, 0),
114 	F(1332000000, P_VIDEO_PLL0_OUT_MAIN, 1, 0, 0),
115 	{ }
116 };
117 
118 static struct clk_rcg2 video_cc_mvs0_clk_src = {
119 	.cmd_rcgr = 0xb94,
120 	.mnd_width = 0,
121 	.hid_width = 5,
122 	.parent_map = video_cc_parent_map_1,
123 	.freq_tbl = ftbl_video_cc_mvs0_clk_src,
124 	.clkr.hw.init = &(struct clk_init_data){
125 		.name = "video_cc_mvs0_clk_src",
126 		.parent_data = video_cc_parent_data_1,
127 		.num_parents = ARRAY_SIZE(video_cc_parent_data_1),
128 		.flags = CLK_SET_RATE_PARENT,
129 		.ops = &clk_rcg2_shared_ops,
130 	},
131 };
132 
133 static const struct freq_tbl ftbl_video_cc_mvs1_clk_src[] = {
134 	F(19200000, P_BI_TCXO, 1, 0, 0),
135 	F(840000000, P_VIDEO_PLL1_OUT_MAIN, 1, 0, 0),
136 	F(1098000000, P_VIDEO_PLL1_OUT_MAIN, 1, 0, 0),
137 	F(1332000000, P_VIDEO_PLL1_OUT_MAIN, 1, 0, 0),
138 	{ }
139 };
140 
141 static struct clk_rcg2 video_cc_mvs1_clk_src = {
142 	.cmd_rcgr = 0xbb4,
143 	.mnd_width = 0,
144 	.hid_width = 5,
145 	.parent_map = video_cc_parent_map_2,
146 	.freq_tbl = ftbl_video_cc_mvs1_clk_src,
147 	.clkr.hw.init = &(struct clk_init_data){
148 		.name = "video_cc_mvs1_clk_src",
149 		.parent_data = video_cc_parent_data_2,
150 		.num_parents = ARRAY_SIZE(video_cc_parent_data_2),
151 		.flags = CLK_SET_RATE_PARENT,
152 		.ops = &clk_rcg2_shared_ops,
153 	},
154 };
155 
156 static struct clk_regmap_div video_cc_mvs0c_div2_div_clk_src = {
157 	.reg = 0xc54,
158 	.shift = 0,
159 	.width = 2,
160 	.clkr.hw.init = &(struct clk_init_data) {
161 		.name = "video_cc_mvs0c_div2_div_clk_src",
162 		.parent_hws = (const struct clk_hw*[]){
163 			&video_cc_mvs0_clk_src.clkr.hw,
164 		},
165 		.num_parents = 1,
166 		.flags = CLK_SET_RATE_PARENT,
167 		.ops = &clk_regmap_div_ro_ops,
168 	},
169 };
170 
171 static struct clk_regmap_div video_cc_mvs0_div_clk_src = {
172 	.reg = 0xd54,
173 	.shift = 0,
174 	.width = 2,
175 	.clkr.hw.init = &(struct clk_init_data) {
176 		.name = "video_cc_mvs0_div_clk_src",
177 		.parent_hws = (const struct clk_hw*[]){
178 			&video_cc_mvs0_clk_src.clkr.hw,
179 		},
180 		.num_parents = 1,
181 		.flags = CLK_SET_RATE_PARENT,
182 		.ops = &clk_regmap_div_ro_ops,
183 	},
184 };
185 
186 static struct clk_regmap_div video_cc_mvs1c_div2_div_clk_src = {
187 	.reg = 0xcf4,
188 	.shift = 0,
189 	.width = 2,
190 	.clkr.hw.init = &(struct clk_init_data) {
191 		.name = "video_cc_mvs1c_div2_div_clk_src",
192 		.parent_hws = (const struct clk_hw*[]){
193 			&video_cc_mvs1_clk_src.clkr.hw,
194 		},
195 		.num_parents = 1,
196 		.flags = CLK_SET_RATE_PARENT,
197 		.ops = &clk_regmap_div_ro_ops,
198 	},
199 };
200 
201 static struct clk_branch video_cc_mvs0c_clk = {
202 	.halt_reg = 0xc34,
203 	.halt_check = BRANCH_HALT,
204 	.clkr = {
205 		.enable_reg = 0xc34,
206 		.enable_mask = BIT(0),
207 		.hw.init = &(struct clk_init_data){
208 			.name = "video_cc_mvs0c_clk",
209 			.parent_hws = (const struct clk_hw*[]){
210 				&video_cc_mvs0c_div2_div_clk_src.clkr.hw,
211 			},
212 			.num_parents = 1,
213 			.flags = CLK_SET_RATE_PARENT,
214 			.ops = &clk_branch2_ops,
215 		},
216 	},
217 };
218 
219 static struct clk_branch video_cc_mvs0_clk = {
220 	.halt_reg = 0xd34,
221 	.halt_check = BRANCH_HALT_VOTED,
222 	.clkr = {
223 		.enable_reg = 0xd34,
224 		.enable_mask = BIT(0),
225 		.hw.init = &(struct clk_init_data){
226 			.name = "video_cc_mvs0_clk",
227 			.parent_hws = (const struct clk_hw*[]){
228 				&video_cc_mvs0_div_clk_src.clkr.hw,
229 			},
230 			.num_parents = 1,
231 			.flags = CLK_SET_RATE_PARENT,
232 			.ops = &clk_branch2_ops,
233 		},
234 	},
235 };
236 
237 static struct clk_branch video_cc_mvs1_div2_clk = {
238 	.halt_reg = 0xdf4,
239 	.halt_check = BRANCH_HALT_VOTED,
240 	.clkr = {
241 		.enable_reg = 0xdf4,
242 		.enable_mask = BIT(0),
243 		.hw.init = &(struct clk_init_data){
244 			.name = "video_cc_mvs1_div2_clk",
245 			.parent_hws = (const struct clk_hw*[]){
246 				&video_cc_mvs1c_div2_div_clk_src.clkr.hw,
247 			},
248 			.num_parents = 1,
249 			.flags = CLK_SET_RATE_PARENT,
250 			.ops = &clk_branch2_ops,
251 		},
252 	},
253 };
254 
255 static struct clk_branch video_cc_mvs1c_clk = {
256 	.halt_reg = 0xcd4,
257 	.halt_check = BRANCH_HALT_VOTED,
258 	.clkr = {
259 		.enable_reg = 0xcd4,
260 		.enable_mask = BIT(0),
261 		.hw.init = &(struct clk_init_data){
262 			.name = "video_cc_mvs1c_clk",
263 			.parent_hws = (const struct clk_hw*[]){
264 				&video_cc_mvs1c_div2_div_clk_src.clkr.hw,
265 			},
266 			.num_parents = 1,
267 			.flags = CLK_SET_RATE_PARENT,
268 			.ops = &clk_branch2_ops,
269 		},
270 	},
271 };
272 
273 static struct gdsc mvs0c_gdsc = {
274 	.gdscr = 0xbf8,
275 	.pd = {
276 		.name = "mvs0c_gdsc",
277 	},
278 	.flags = 0,
279 	.pwrsts = PWRSTS_OFF_ON,
280 };
281 
282 static struct gdsc mvs1c_gdsc = {
283 	.gdscr = 0xc98,
284 	.pd = {
285 		.name = "mvs1c_gdsc",
286 	},
287 	.flags = 0,
288 	.pwrsts = PWRSTS_OFF_ON,
289 };
290 
291 static struct gdsc mvs0_gdsc = {
292 	.gdscr = 0xd18,
293 	.pd = {
294 		.name = "mvs0_gdsc",
295 	},
296 	.flags = HW_CTRL,
297 	.pwrsts = PWRSTS_OFF_ON,
298 };
299 
300 static struct gdsc mvs1_gdsc = {
301 	.gdscr = 0xd98,
302 	.pd = {
303 		.name = "mvs1_gdsc",
304 	},
305 	.flags = HW_CTRL,
306 	.pwrsts = PWRSTS_OFF_ON,
307 };
308 
309 static struct clk_regmap *video_cc_sm8250_clocks[] = {
310 	[VIDEO_CC_MVS0_CLK] = &video_cc_mvs0_clk.clkr,
311 	[VIDEO_CC_MVS0_CLK_SRC] = &video_cc_mvs0_clk_src.clkr,
312 	[VIDEO_CC_MVS0_DIV_CLK_SRC] = &video_cc_mvs0_div_clk_src.clkr,
313 	[VIDEO_CC_MVS0C_CLK] = &video_cc_mvs0c_clk.clkr,
314 	[VIDEO_CC_MVS0C_DIV2_DIV_CLK_SRC] = &video_cc_mvs0c_div2_div_clk_src.clkr,
315 	[VIDEO_CC_MVS1_CLK_SRC] = &video_cc_mvs1_clk_src.clkr,
316 	[VIDEO_CC_MVS1_DIV2_CLK] = &video_cc_mvs1_div2_clk.clkr,
317 	[VIDEO_CC_MVS1C_CLK] = &video_cc_mvs1c_clk.clkr,
318 	[VIDEO_CC_MVS1C_DIV2_DIV_CLK_SRC] = &video_cc_mvs1c_div2_div_clk_src.clkr,
319 	[VIDEO_CC_PLL0] = &video_pll0.clkr,
320 	[VIDEO_CC_PLL1] = &video_pll1.clkr,
321 };
322 
323 static const struct qcom_reset_map video_cc_sm8250_resets[] = {
324 	[VIDEO_CC_CVP_INTERFACE_BCR] = { 0xe54 },
325 	[VIDEO_CC_CVP_MVS0_BCR] = { 0xd14 },
326 	[VIDEO_CC_MVS0C_CLK_ARES] = { 0xc34, 2 },
327 	[VIDEO_CC_CVP_MVS0C_BCR] = { 0xbf4 },
328 	[VIDEO_CC_CVP_MVS1_BCR] = { 0xd94 },
329 	[VIDEO_CC_MVS1C_CLK_ARES] = { 0xcd4, 2 },
330 	[VIDEO_CC_CVP_MVS1C_BCR] = { 0xc94 },
331 };
332 
333 static struct gdsc *video_cc_sm8250_gdscs[] = {
334 	[MVS0C_GDSC] = &mvs0c_gdsc,
335 	[MVS1C_GDSC] = &mvs1c_gdsc,
336 	[MVS0_GDSC] = &mvs0_gdsc,
337 	[MVS1_GDSC] = &mvs1_gdsc,
338 };
339 
340 static const struct regmap_config video_cc_sm8250_regmap_config = {
341 	.reg_bits = 32,
342 	.reg_stride = 4,
343 	.val_bits = 32,
344 	.max_register = 0xf4c,
345 	.fast_io = true,
346 };
347 
348 static const struct qcom_cc_desc video_cc_sm8250_desc = {
349 	.config = &video_cc_sm8250_regmap_config,
350 	.clks = video_cc_sm8250_clocks,
351 	.num_clks = ARRAY_SIZE(video_cc_sm8250_clocks),
352 	.resets = video_cc_sm8250_resets,
353 	.num_resets = ARRAY_SIZE(video_cc_sm8250_resets),
354 	.gdscs = video_cc_sm8250_gdscs,
355 	.num_gdscs = ARRAY_SIZE(video_cc_sm8250_gdscs),
356 };
357 
358 static const struct of_device_id video_cc_sm8250_match_table[] = {
359 	{ .compatible = "qcom,sm8250-videocc" },
360 	{ }
361 };
362 MODULE_DEVICE_TABLE(of, video_cc_sm8250_match_table);
363 
364 static void video_cc_sm8250_pm_runtime_disable(void *data)
365 {
366 	pm_runtime_disable(data);
367 }
368 
369 static int video_cc_sm8250_probe(struct platform_device *pdev)
370 {
371 	struct regmap *regmap;
372 	int ret;
373 
374 	pm_runtime_enable(&pdev->dev);
375 
376 	ret = devm_add_action_or_reset(&pdev->dev, video_cc_sm8250_pm_runtime_disable, &pdev->dev);
377 	if (ret)
378 		return ret;
379 
380 	ret = pm_runtime_resume_and_get(&pdev->dev);
381 	if (ret)
382 		return ret;
383 
384 	regmap = qcom_cc_map(pdev, &video_cc_sm8250_desc);
385 	if (IS_ERR(regmap)) {
386 		pm_runtime_put(&pdev->dev);
387 		return PTR_ERR(regmap);
388 	}
389 
390 	clk_lucid_pll_configure(&video_pll0, regmap, &video_pll0_config);
391 	clk_lucid_pll_configure(&video_pll1, regmap, &video_pll1_config);
392 
393 	/* Keep VIDEO_CC_AHB_CLK and VIDEO_CC_XO_CLK ALWAYS-ON */
394 	regmap_update_bits(regmap, 0xe58, BIT(0), BIT(0));
395 	regmap_update_bits(regmap, 0xeec, BIT(0), BIT(0));
396 
397 	ret = qcom_cc_really_probe(pdev, &video_cc_sm8250_desc, regmap);
398 
399 	pm_runtime_put(&pdev->dev);
400 
401 	return ret;
402 }
403 
404 static struct platform_driver video_cc_sm8250_driver = {
405 	.probe	= video_cc_sm8250_probe,
406 	.driver	= {
407 		.name = "sm8250-videocc",
408 		.of_match_table = video_cc_sm8250_match_table,
409 	},
410 };
411 
412 static int __init video_cc_sm8250_init(void)
413 {
414 	return platform_driver_register(&video_cc_sm8250_driver);
415 }
416 subsys_initcall(video_cc_sm8250_init);
417 
418 static void __exit video_cc_sm8250_exit(void)
419 {
420 	platform_driver_unregister(&video_cc_sm8250_driver);
421 }
422 module_exit(video_cc_sm8250_exit);
423 
424 MODULE_LICENSE("GPL v2");
425 MODULE_DESCRIPTION("QTI VIDEOCC SM8250 Driver");
426