1 // SPDX-License-Identifier: GPL-2.0-only
2 /*
3 * Copyright (c) 2017 Icenowy Zheng <icenowy@aosc.io>
4 */
5
6 #include <linux/clk.h>
7 #include <linux/clk-provider.h>
8 #include <linux/of_address.h>
9 #include <linux/of_platform.h>
10 #include <linux/platform_device.h>
11 #include <linux/reset.h>
12
13 #include "ccu_common.h"
14 #include "ccu_div.h"
15 #include "ccu_gate.h"
16 #include "ccu_reset.h"
17
18 #include "ccu-sun8i-de2.h"
19
20 static SUNXI_CCU_GATE(bus_mixer0_clk, "bus-mixer0", "bus-de",
21 0x04, BIT(0), 0);
22 static SUNXI_CCU_GATE(bus_mixer1_clk, "bus-mixer1", "bus-de",
23 0x04, BIT(1), 0);
24 static SUNXI_CCU_GATE(bus_wb_clk, "bus-wb", "bus-de",
25 0x04, BIT(2), 0);
26 static SUNXI_CCU_GATE(bus_rot_clk, "bus-rot", "bus-de",
27 0x04, BIT(3), 0);
28
29 static SUNXI_CCU_GATE(mixer0_clk, "mixer0", "mixer0-div",
30 0x00, BIT(0), CLK_SET_RATE_PARENT);
31 static SUNXI_CCU_GATE(mixer1_clk, "mixer1", "mixer1-div",
32 0x00, BIT(1), CLK_SET_RATE_PARENT);
33 static SUNXI_CCU_GATE(wb_clk, "wb", "wb-div",
34 0x00, BIT(2), CLK_SET_RATE_PARENT);
35 static SUNXI_CCU_GATE(rot_clk, "rot", "rot-div",
36 0x00, BIT(3), CLK_SET_RATE_PARENT);
37
38 static SUNXI_CCU_M(mixer0_div_clk, "mixer0-div", "de", 0x0c, 0, 4,
39 CLK_SET_RATE_PARENT);
40 static SUNXI_CCU_M(mixer1_div_clk, "mixer1-div", "de", 0x0c, 4, 4,
41 CLK_SET_RATE_PARENT);
42 static SUNXI_CCU_M(wb_div_clk, "wb-div", "de", 0x0c, 8, 4,
43 CLK_SET_RATE_PARENT);
44 static SUNXI_CCU_M(rot_div_clk, "rot-div", "de", 0x0c, 0x0c, 4,
45 CLK_SET_RATE_PARENT);
46
47 static SUNXI_CCU_M(mixer0_div_a83_clk, "mixer0-div", "pll-de", 0x0c, 0, 4,
48 CLK_SET_RATE_PARENT);
49 static SUNXI_CCU_M(mixer1_div_a83_clk, "mixer1-div", "pll-de", 0x0c, 4, 4,
50 CLK_SET_RATE_PARENT);
51 static SUNXI_CCU_M(wb_div_a83_clk, "wb-div", "pll-de", 0x0c, 8, 4,
52 CLK_SET_RATE_PARENT);
53 static SUNXI_CCU_M(rot_div_a83_clk, "rot-div", "pll-de", 0x0c, 0x0c, 4,
54 CLK_SET_RATE_PARENT);
55
56 static struct ccu_common *sun8i_a83t_de2_clks[] = {
57 &mixer0_clk.common,
58 &mixer1_clk.common,
59 &wb_clk.common,
60
61 &bus_mixer0_clk.common,
62 &bus_mixer1_clk.common,
63 &bus_wb_clk.common,
64
65 &mixer0_div_a83_clk.common,
66 &mixer1_div_a83_clk.common,
67 &wb_div_a83_clk.common,
68
69 &bus_rot_clk.common,
70 &rot_clk.common,
71 &rot_div_a83_clk.common,
72 };
73
74 static struct ccu_common *sun8i_h3_de2_clks[] = {
75 &mixer0_clk.common,
76 &mixer1_clk.common,
77 &wb_clk.common,
78
79 &bus_mixer0_clk.common,
80 &bus_mixer1_clk.common,
81 &bus_wb_clk.common,
82
83 &mixer0_div_clk.common,
84 &mixer1_div_clk.common,
85 &wb_div_clk.common,
86 };
87
88 static struct ccu_common *sun8i_v3s_de2_clks[] = {
89 &mixer0_clk.common,
90 &wb_clk.common,
91
92 &bus_mixer0_clk.common,
93 &bus_wb_clk.common,
94
95 &mixer0_div_clk.common,
96 &wb_div_clk.common,
97 };
98
99 static struct ccu_common *sun50i_a64_de2_clks[] = {
100 &mixer0_clk.common,
101 &mixer1_clk.common,
102 &wb_clk.common,
103
104 &bus_mixer0_clk.common,
105 &bus_mixer1_clk.common,
106 &bus_wb_clk.common,
107
108 &mixer0_div_clk.common,
109 &mixer1_div_clk.common,
110 &wb_div_clk.common,
111
112 &bus_rot_clk.common,
113 &rot_clk.common,
114 &rot_div_clk.common,
115 };
116
117 static struct clk_hw_onecell_data sun8i_a83t_de2_hw_clks = {
118 .hws = {
119 [CLK_MIXER0] = &mixer0_clk.common.hw,
120 [CLK_MIXER1] = &mixer1_clk.common.hw,
121 [CLK_WB] = &wb_clk.common.hw,
122 [CLK_ROT] = &rot_clk.common.hw,
123
124 [CLK_BUS_MIXER0] = &bus_mixer0_clk.common.hw,
125 [CLK_BUS_MIXER1] = &bus_mixer1_clk.common.hw,
126 [CLK_BUS_WB] = &bus_wb_clk.common.hw,
127 [CLK_BUS_ROT] = &bus_rot_clk.common.hw,
128
129 [CLK_MIXER0_DIV] = &mixer0_div_a83_clk.common.hw,
130 [CLK_MIXER1_DIV] = &mixer1_div_a83_clk.common.hw,
131 [CLK_WB_DIV] = &wb_div_a83_clk.common.hw,
132 [CLK_ROT_DIV] = &rot_div_a83_clk.common.hw,
133 },
134 .num = CLK_NUMBER_WITH_ROT,
135 };
136
137 static struct clk_hw_onecell_data sun8i_h3_de2_hw_clks = {
138 .hws = {
139 [CLK_MIXER0] = &mixer0_clk.common.hw,
140 [CLK_MIXER1] = &mixer1_clk.common.hw,
141 [CLK_WB] = &wb_clk.common.hw,
142
143 [CLK_BUS_MIXER0] = &bus_mixer0_clk.common.hw,
144 [CLK_BUS_MIXER1] = &bus_mixer1_clk.common.hw,
145 [CLK_BUS_WB] = &bus_wb_clk.common.hw,
146
147 [CLK_MIXER0_DIV] = &mixer0_div_clk.common.hw,
148 [CLK_MIXER1_DIV] = &mixer1_div_clk.common.hw,
149 [CLK_WB_DIV] = &wb_div_clk.common.hw,
150 },
151 .num = CLK_NUMBER_WITHOUT_ROT,
152 };
153
154 static struct clk_hw_onecell_data sun8i_v3s_de2_hw_clks = {
155 .hws = {
156 [CLK_MIXER0] = &mixer0_clk.common.hw,
157 [CLK_WB] = &wb_clk.common.hw,
158
159 [CLK_BUS_MIXER0] = &bus_mixer0_clk.common.hw,
160 [CLK_BUS_WB] = &bus_wb_clk.common.hw,
161
162 [CLK_MIXER0_DIV] = &mixer0_div_clk.common.hw,
163 [CLK_WB_DIV] = &wb_div_clk.common.hw,
164 },
165 .num = CLK_NUMBER_WITHOUT_ROT,
166 };
167
168 static struct clk_hw_onecell_data sun50i_a64_de2_hw_clks = {
169 .hws = {
170 [CLK_MIXER0] = &mixer0_clk.common.hw,
171 [CLK_MIXER1] = &mixer1_clk.common.hw,
172 [CLK_WB] = &wb_clk.common.hw,
173 [CLK_ROT] = &rot_clk.common.hw,
174
175 [CLK_BUS_MIXER0] = &bus_mixer0_clk.common.hw,
176 [CLK_BUS_MIXER1] = &bus_mixer1_clk.common.hw,
177 [CLK_BUS_WB] = &bus_wb_clk.common.hw,
178 [CLK_BUS_ROT] = &bus_rot_clk.common.hw,
179
180 [CLK_MIXER0_DIV] = &mixer0_div_clk.common.hw,
181 [CLK_MIXER1_DIV] = &mixer1_div_clk.common.hw,
182 [CLK_WB_DIV] = &wb_div_clk.common.hw,
183 [CLK_ROT_DIV] = &rot_div_clk.common.hw,
184 },
185 .num = CLK_NUMBER_WITH_ROT,
186 };
187
188 static struct ccu_reset_map sun8i_a83t_de2_resets[] = {
189 [RST_MIXER0] = { 0x08, BIT(0) },
190 /*
191 * Mixer1 reset line is shared with wb, so only RST_WB is
192 * exported here.
193 */
194 [RST_WB] = { 0x08, BIT(2) },
195 [RST_ROT] = { 0x08, BIT(3) },
196 };
197
198 static struct ccu_reset_map sun8i_h3_de2_resets[] = {
199 [RST_MIXER0] = { 0x08, BIT(0) },
200 /*
201 * Mixer1 reset line is shared with wb, so only RST_WB is
202 * exported here.
203 * V3s doesn't have mixer1, so it also shares this struct.
204 */
205 [RST_WB] = { 0x08, BIT(2) },
206 };
207
208 static struct ccu_reset_map sun50i_a64_de2_resets[] = {
209 [RST_MIXER0] = { 0x08, BIT(0) },
210 [RST_MIXER1] = { 0x08, BIT(1) },
211 [RST_WB] = { 0x08, BIT(2) },
212 [RST_ROT] = { 0x08, BIT(3) },
213 };
214
215 static struct ccu_reset_map sun50i_h5_de2_resets[] = {
216 [RST_MIXER0] = { 0x08, BIT(0) },
217 [RST_MIXER1] = { 0x08, BIT(1) },
218 [RST_WB] = { 0x08, BIT(2) },
219 };
220
221 static const struct sunxi_ccu_desc sun8i_a83t_de2_clk_desc = {
222 .ccu_clks = sun8i_a83t_de2_clks,
223 .num_ccu_clks = ARRAY_SIZE(sun8i_a83t_de2_clks),
224
225 .hw_clks = &sun8i_a83t_de2_hw_clks,
226
227 .resets = sun8i_a83t_de2_resets,
228 .num_resets = ARRAY_SIZE(sun8i_a83t_de2_resets),
229 };
230
231 static const struct sunxi_ccu_desc sun8i_h3_de2_clk_desc = {
232 .ccu_clks = sun8i_h3_de2_clks,
233 .num_ccu_clks = ARRAY_SIZE(sun8i_h3_de2_clks),
234
235 .hw_clks = &sun8i_h3_de2_hw_clks,
236
237 .resets = sun8i_h3_de2_resets,
238 .num_resets = ARRAY_SIZE(sun8i_h3_de2_resets),
239 };
240
241 static const struct sunxi_ccu_desc sun8i_r40_de2_clk_desc = {
242 .ccu_clks = sun50i_a64_de2_clks,
243 .num_ccu_clks = ARRAY_SIZE(sun50i_a64_de2_clks),
244
245 .hw_clks = &sun50i_a64_de2_hw_clks,
246
247 .resets = sun8i_a83t_de2_resets,
248 .num_resets = ARRAY_SIZE(sun8i_a83t_de2_resets),
249 };
250
251 static const struct sunxi_ccu_desc sun8i_v3s_de2_clk_desc = {
252 .ccu_clks = sun8i_v3s_de2_clks,
253 .num_ccu_clks = ARRAY_SIZE(sun8i_v3s_de2_clks),
254
255 .hw_clks = &sun8i_v3s_de2_hw_clks,
256
257 .resets = sun8i_a83t_de2_resets,
258 .num_resets = ARRAY_SIZE(sun8i_a83t_de2_resets),
259 };
260
261 static const struct sunxi_ccu_desc sun50i_a64_de2_clk_desc = {
262 .ccu_clks = sun50i_a64_de2_clks,
263 .num_ccu_clks = ARRAY_SIZE(sun50i_a64_de2_clks),
264
265 .hw_clks = &sun50i_a64_de2_hw_clks,
266
267 .resets = sun50i_a64_de2_resets,
268 .num_resets = ARRAY_SIZE(sun50i_a64_de2_resets),
269 };
270
271 static const struct sunxi_ccu_desc sun50i_h5_de2_clk_desc = {
272 .ccu_clks = sun8i_h3_de2_clks,
273 .num_ccu_clks = ARRAY_SIZE(sun8i_h3_de2_clks),
274
275 .hw_clks = &sun8i_h3_de2_hw_clks,
276
277 .resets = sun50i_h5_de2_resets,
278 .num_resets = ARRAY_SIZE(sun50i_h5_de2_resets),
279 };
280
sunxi_de2_clk_probe(struct platform_device * pdev)281 static int sunxi_de2_clk_probe(struct platform_device *pdev)
282 {
283 struct resource *res;
284 struct clk *bus_clk, *mod_clk;
285 struct reset_control *rstc;
286 void __iomem *reg;
287 const struct sunxi_ccu_desc *ccu_desc;
288 int ret;
289
290 ccu_desc = of_device_get_match_data(&pdev->dev);
291 if (!ccu_desc)
292 return -EINVAL;
293
294 res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
295 reg = devm_ioremap_resource(&pdev->dev, res);
296 if (IS_ERR(reg))
297 return PTR_ERR(reg);
298
299 bus_clk = devm_clk_get(&pdev->dev, "bus");
300 if (IS_ERR(bus_clk)) {
301 ret = PTR_ERR(bus_clk);
302 if (ret != -EPROBE_DEFER)
303 dev_err(&pdev->dev, "Couldn't get bus clk: %d\n", ret);
304 return ret;
305 }
306
307 mod_clk = devm_clk_get(&pdev->dev, "mod");
308 if (IS_ERR(mod_clk)) {
309 ret = PTR_ERR(mod_clk);
310 if (ret != -EPROBE_DEFER)
311 dev_err(&pdev->dev, "Couldn't get mod clk: %d\n", ret);
312 return ret;
313 }
314
315 rstc = devm_reset_control_get_exclusive(&pdev->dev, NULL);
316 if (IS_ERR(rstc)) {
317 ret = PTR_ERR(rstc);
318 if (ret != -EPROBE_DEFER)
319 dev_err(&pdev->dev,
320 "Couldn't get reset control: %d\n", ret);
321 return ret;
322 }
323
324 /* The clocks need to be enabled for us to access the registers */
325 ret = clk_prepare_enable(bus_clk);
326 if (ret) {
327 dev_err(&pdev->dev, "Couldn't enable bus clk: %d\n", ret);
328 return ret;
329 }
330
331 ret = clk_prepare_enable(mod_clk);
332 if (ret) {
333 dev_err(&pdev->dev, "Couldn't enable mod clk: %d\n", ret);
334 goto err_disable_bus_clk;
335 }
336
337 /* The reset control needs to be asserted for the controls to work */
338 ret = reset_control_deassert(rstc);
339 if (ret) {
340 dev_err(&pdev->dev,
341 "Couldn't deassert reset control: %d\n", ret);
342 goto err_disable_mod_clk;
343 }
344
345 ret = sunxi_ccu_probe(pdev->dev.of_node, reg, ccu_desc);
346 if (ret)
347 goto err_assert_reset;
348
349 return 0;
350
351 err_assert_reset:
352 reset_control_assert(rstc);
353 err_disable_mod_clk:
354 clk_disable_unprepare(mod_clk);
355 err_disable_bus_clk:
356 clk_disable_unprepare(bus_clk);
357 return ret;
358 }
359
360 static const struct of_device_id sunxi_de2_clk_ids[] = {
361 {
362 .compatible = "allwinner,sun8i-a83t-de2-clk",
363 .data = &sun8i_a83t_de2_clk_desc,
364 },
365 {
366 .compatible = "allwinner,sun8i-h3-de2-clk",
367 .data = &sun8i_h3_de2_clk_desc,
368 },
369 {
370 .compatible = "allwinner,sun8i-r40-de2-clk",
371 .data = &sun8i_r40_de2_clk_desc,
372 },
373 {
374 .compatible = "allwinner,sun8i-v3s-de2-clk",
375 .data = &sun8i_v3s_de2_clk_desc,
376 },
377 {
378 .compatible = "allwinner,sun50i-a64-de2-clk",
379 .data = &sun50i_a64_de2_clk_desc,
380 },
381 {
382 .compatible = "allwinner,sun50i-h5-de2-clk",
383 .data = &sun50i_h5_de2_clk_desc,
384 },
385 {
386 .compatible = "allwinner,sun50i-h6-de3-clk",
387 .data = &sun50i_h5_de2_clk_desc,
388 },
389 { }
390 };
391
392 static struct platform_driver sunxi_de2_clk_driver = {
393 .probe = sunxi_de2_clk_probe,
394 .driver = {
395 .name = "sunxi-de2-clks",
396 .of_match_table = sunxi_de2_clk_ids,
397 },
398 };
399 builtin_platform_driver(sunxi_de2_clk_driver);
400