xref: /openbmc/linux/drivers/soc/mediatek/mtk-mmsys.c (revision 55fd7e02) 
1 // SPDX-License-Identifier: GPL-2.0-only
2 /*
3  * Copyright (c) 2014 MediaTek Inc.
4  * Author: James Liao <jamesjj.liao@mediatek.com>
5  */
6 
7 #include <linux/device.h>
8 #include <linux/of_device.h>
9 #include <linux/platform_device.h>
10 #include <linux/soc/mediatek/mtk-mmsys.h>
11 
12 #include "../../gpu/drm/mediatek/mtk_drm_ddp.h"
13 #include "../../gpu/drm/mediatek/mtk_drm_ddp_comp.h"
14 
15 #define DISP_REG_CONFIG_DISP_OVL0_MOUT_EN	0x040
16 #define DISP_REG_CONFIG_DISP_OVL1_MOUT_EN	0x044
17 #define DISP_REG_CONFIG_DISP_OD_MOUT_EN		0x048
18 #define DISP_REG_CONFIG_DISP_GAMMA_MOUT_EN	0x04c
19 #define DISP_REG_CONFIG_DISP_UFOE_MOUT_EN	0x050
20 #define DISP_REG_CONFIG_DISP_COLOR0_SEL_IN	0x084
21 #define DISP_REG_CONFIG_DISP_COLOR1_SEL_IN	0x088
22 #define DISP_REG_CONFIG_DSIE_SEL_IN		0x0a4
23 #define DISP_REG_CONFIG_DSIO_SEL_IN		0x0a8
24 #define DISP_REG_CONFIG_DPI_SEL_IN		0x0ac
25 #define DISP_REG_CONFIG_DISP_RDMA2_SOUT		0x0b8
26 #define DISP_REG_CONFIG_DISP_RDMA0_SOUT_EN	0x0c4
27 #define DISP_REG_CONFIG_DISP_RDMA1_SOUT_EN	0x0c8
28 #define DISP_REG_CONFIG_MMSYS_CG_CON0		0x100
29 
30 #define DISP_REG_CONFIG_DISP_OVL_MOUT_EN	0x030
31 #define DISP_REG_CONFIG_OUT_SEL			0x04c
32 #define DISP_REG_CONFIG_DSI_SEL			0x050
33 #define DISP_REG_CONFIG_DPI_SEL			0x064
34 
35 #define OVL0_MOUT_EN_COLOR0			0x1
36 #define OD_MOUT_EN_RDMA0			0x1
37 #define OD1_MOUT_EN_RDMA1			BIT(16)
38 #define UFOE_MOUT_EN_DSI0			0x1
39 #define COLOR0_SEL_IN_OVL0			0x1
40 #define OVL1_MOUT_EN_COLOR1			0x1
41 #define GAMMA_MOUT_EN_RDMA1			0x1
42 #define RDMA0_SOUT_DPI0				0x2
43 #define RDMA0_SOUT_DPI1				0x3
44 #define RDMA0_SOUT_DSI1				0x1
45 #define RDMA0_SOUT_DSI2				0x4
46 #define RDMA0_SOUT_DSI3				0x5
47 #define RDMA1_SOUT_DPI0				0x2
48 #define RDMA1_SOUT_DPI1				0x3
49 #define RDMA1_SOUT_DSI1				0x1
50 #define RDMA1_SOUT_DSI2				0x4
51 #define RDMA1_SOUT_DSI3				0x5
52 #define RDMA2_SOUT_DPI0				0x2
53 #define RDMA2_SOUT_DPI1				0x3
54 #define RDMA2_SOUT_DSI1				0x1
55 #define RDMA2_SOUT_DSI2				0x4
56 #define RDMA2_SOUT_DSI3				0x5
57 #define DPI0_SEL_IN_RDMA1			0x1
58 #define DPI0_SEL_IN_RDMA2			0x3
59 #define DPI1_SEL_IN_RDMA1			(0x1 << 8)
60 #define DPI1_SEL_IN_RDMA2			(0x3 << 8)
61 #define DSI0_SEL_IN_RDMA1			0x1
62 #define DSI0_SEL_IN_RDMA2			0x4
63 #define DSI1_SEL_IN_RDMA1			0x1
64 #define DSI1_SEL_IN_RDMA2			0x4
65 #define DSI2_SEL_IN_RDMA1			(0x1 << 16)
66 #define DSI2_SEL_IN_RDMA2			(0x4 << 16)
67 #define DSI3_SEL_IN_RDMA1			(0x1 << 16)
68 #define DSI3_SEL_IN_RDMA2			(0x4 << 16)
69 #define COLOR1_SEL_IN_OVL1			0x1
70 
71 #define OVL_MOUT_EN_RDMA			0x1
72 #define BLS_TO_DSI_RDMA1_TO_DPI1		0x8
73 #define BLS_TO_DPI_RDMA1_TO_DSI			0x2
74 #define DSI_SEL_IN_BLS				0x0
75 #define DPI_SEL_IN_BLS				0x0
76 #define DSI_SEL_IN_RDMA				0x1
77 
78 struct mtk_mmsys_driver_data {
79 	const char *clk_driver;
80 };
81 
82 static const struct mtk_mmsys_driver_data mt2701_mmsys_driver_data = {
83 	.clk_driver = "clk-mt2701-mm",
84 };
85 
86 static const struct mtk_mmsys_driver_data mt2712_mmsys_driver_data = {
87 	.clk_driver = "clk-mt2712-mm",
88 };
89 
90 static const struct mtk_mmsys_driver_data mt6779_mmsys_driver_data = {
91 	.clk_driver = "clk-mt6779-mm",
92 };
93 
94 static const struct mtk_mmsys_driver_data mt6797_mmsys_driver_data = {
95 	.clk_driver = "clk-mt6797-mm",
96 };
97 
98 static const struct mtk_mmsys_driver_data mt8173_mmsys_driver_data = {
99 	.clk_driver = "clk-mt8173-mm",
100 };
101 
102 static const struct mtk_mmsys_driver_data mt8183_mmsys_driver_data = {
103 	.clk_driver = "clk-mt8183-mm",
104 };
105 
106 static unsigned int mtk_mmsys_ddp_mout_en(enum mtk_ddp_comp_id cur,
107 					  enum mtk_ddp_comp_id next,
108 					  unsigned int *addr)
109 {
110 	unsigned int value;
111 
112 	if (cur == DDP_COMPONENT_OVL0 && next == DDP_COMPONENT_COLOR0) {
113 		*addr = DISP_REG_CONFIG_DISP_OVL0_MOUT_EN;
114 		value = OVL0_MOUT_EN_COLOR0;
115 	} else if (cur == DDP_COMPONENT_OVL0 && next == DDP_COMPONENT_RDMA0) {
116 		*addr = DISP_REG_CONFIG_DISP_OVL_MOUT_EN;
117 		value = OVL_MOUT_EN_RDMA;
118 	} else if (cur == DDP_COMPONENT_OD0 && next == DDP_COMPONENT_RDMA0) {
119 		*addr = DISP_REG_CONFIG_DISP_OD_MOUT_EN;
120 		value = OD_MOUT_EN_RDMA0;
121 	} else if (cur == DDP_COMPONENT_UFOE && next == DDP_COMPONENT_DSI0) {
122 		*addr = DISP_REG_CONFIG_DISP_UFOE_MOUT_EN;
123 		value = UFOE_MOUT_EN_DSI0;
124 	} else if (cur == DDP_COMPONENT_OVL1 && next == DDP_COMPONENT_COLOR1) {
125 		*addr = DISP_REG_CONFIG_DISP_OVL1_MOUT_EN;
126 		value = OVL1_MOUT_EN_COLOR1;
127 	} else if (cur == DDP_COMPONENT_GAMMA && next == DDP_COMPONENT_RDMA1) {
128 		*addr = DISP_REG_CONFIG_DISP_GAMMA_MOUT_EN;
129 		value = GAMMA_MOUT_EN_RDMA1;
130 	} else if (cur == DDP_COMPONENT_OD1 && next == DDP_COMPONENT_RDMA1) {
131 		*addr = DISP_REG_CONFIG_DISP_OD_MOUT_EN;
132 		value = OD1_MOUT_EN_RDMA1;
133 	} else if (cur == DDP_COMPONENT_RDMA0 && next == DDP_COMPONENT_DPI0) {
134 		*addr = DISP_REG_CONFIG_DISP_RDMA0_SOUT_EN;
135 		value = RDMA0_SOUT_DPI0;
136 	} else if (cur == DDP_COMPONENT_RDMA0 && next == DDP_COMPONENT_DPI1) {
137 		*addr = DISP_REG_CONFIG_DISP_RDMA0_SOUT_EN;
138 		value = RDMA0_SOUT_DPI1;
139 	} else if (cur == DDP_COMPONENT_RDMA0 && next == DDP_COMPONENT_DSI1) {
140 		*addr = DISP_REG_CONFIG_DISP_RDMA0_SOUT_EN;
141 		value = RDMA0_SOUT_DSI1;
142 	} else if (cur == DDP_COMPONENT_RDMA0 && next == DDP_COMPONENT_DSI2) {
143 		*addr = DISP_REG_CONFIG_DISP_RDMA0_SOUT_EN;
144 		value = RDMA0_SOUT_DSI2;
145 	} else if (cur == DDP_COMPONENT_RDMA0 && next == DDP_COMPONENT_DSI3) {
146 		*addr = DISP_REG_CONFIG_DISP_RDMA0_SOUT_EN;
147 		value = RDMA0_SOUT_DSI3;
148 	} else if (cur == DDP_COMPONENT_RDMA1 && next == DDP_COMPONENT_DSI1) {
149 		*addr = DISP_REG_CONFIG_DISP_RDMA1_SOUT_EN;
150 		value = RDMA1_SOUT_DSI1;
151 	} else if (cur == DDP_COMPONENT_RDMA1 && next == DDP_COMPONENT_DSI2) {
152 		*addr = DISP_REG_CONFIG_DISP_RDMA1_SOUT_EN;
153 		value = RDMA1_SOUT_DSI2;
154 	} else if (cur == DDP_COMPONENT_RDMA1 && next == DDP_COMPONENT_DSI3) {
155 		*addr = DISP_REG_CONFIG_DISP_RDMA1_SOUT_EN;
156 		value = RDMA1_SOUT_DSI3;
157 	} else if (cur == DDP_COMPONENT_RDMA1 && next == DDP_COMPONENT_DPI0) {
158 		*addr = DISP_REG_CONFIG_DISP_RDMA1_SOUT_EN;
159 		value = RDMA1_SOUT_DPI0;
160 	} else if (cur == DDP_COMPONENT_RDMA1 && next == DDP_COMPONENT_DPI1) {
161 		*addr = DISP_REG_CONFIG_DISP_RDMA1_SOUT_EN;
162 		value = RDMA1_SOUT_DPI1;
163 	} else if (cur == DDP_COMPONENT_RDMA2 && next == DDP_COMPONENT_DPI0) {
164 		*addr = DISP_REG_CONFIG_DISP_RDMA2_SOUT;
165 		value = RDMA2_SOUT_DPI0;
166 	} else if (cur == DDP_COMPONENT_RDMA2 && next == DDP_COMPONENT_DPI1) {
167 		*addr = DISP_REG_CONFIG_DISP_RDMA2_SOUT;
168 		value = RDMA2_SOUT_DPI1;
169 	} else if (cur == DDP_COMPONENT_RDMA2 && next == DDP_COMPONENT_DSI1) {
170 		*addr = DISP_REG_CONFIG_DISP_RDMA2_SOUT;
171 		value = RDMA2_SOUT_DSI1;
172 	} else if (cur == DDP_COMPONENT_RDMA2 && next == DDP_COMPONENT_DSI2) {
173 		*addr = DISP_REG_CONFIG_DISP_RDMA2_SOUT;
174 		value = RDMA2_SOUT_DSI2;
175 	} else if (cur == DDP_COMPONENT_RDMA2 && next == DDP_COMPONENT_DSI3) {
176 		*addr = DISP_REG_CONFIG_DISP_RDMA2_SOUT;
177 		value = RDMA2_SOUT_DSI3;
178 	} else {
179 		value = 0;
180 	}
181 
182 	return value;
183 }
184 
185 static unsigned int mtk_mmsys_ddp_sel_in(enum mtk_ddp_comp_id cur,
186 					 enum mtk_ddp_comp_id next,
187 					 unsigned int *addr)
188 {
189 	unsigned int value;
190 
191 	if (cur == DDP_COMPONENT_OVL0 && next == DDP_COMPONENT_COLOR0) {
192 		*addr = DISP_REG_CONFIG_DISP_COLOR0_SEL_IN;
193 		value = COLOR0_SEL_IN_OVL0;
194 	} else if (cur == DDP_COMPONENT_RDMA1 && next == DDP_COMPONENT_DPI0) {
195 		*addr = DISP_REG_CONFIG_DPI_SEL_IN;
196 		value = DPI0_SEL_IN_RDMA1;
197 	} else if (cur == DDP_COMPONENT_RDMA1 && next == DDP_COMPONENT_DPI1) {
198 		*addr = DISP_REG_CONFIG_DPI_SEL_IN;
199 		value = DPI1_SEL_IN_RDMA1;
200 	} else if (cur == DDP_COMPONENT_RDMA1 && next == DDP_COMPONENT_DSI0) {
201 		*addr = DISP_REG_CONFIG_DSIE_SEL_IN;
202 		value = DSI0_SEL_IN_RDMA1;
203 	} else if (cur == DDP_COMPONENT_RDMA1 && next == DDP_COMPONENT_DSI1) {
204 		*addr = DISP_REG_CONFIG_DSIO_SEL_IN;
205 		value = DSI1_SEL_IN_RDMA1;
206 	} else if (cur == DDP_COMPONENT_RDMA1 && next == DDP_COMPONENT_DSI2) {
207 		*addr = DISP_REG_CONFIG_DSIE_SEL_IN;
208 		value = DSI2_SEL_IN_RDMA1;
209 	} else if (cur == DDP_COMPONENT_RDMA1 && next == DDP_COMPONENT_DSI3) {
210 		*addr = DISP_REG_CONFIG_DSIO_SEL_IN;
211 		value = DSI3_SEL_IN_RDMA1;
212 	} else if (cur == DDP_COMPONENT_RDMA2 && next == DDP_COMPONENT_DPI0) {
213 		*addr = DISP_REG_CONFIG_DPI_SEL_IN;
214 		value = DPI0_SEL_IN_RDMA2;
215 	} else if (cur == DDP_COMPONENT_RDMA2 && next == DDP_COMPONENT_DPI1) {
216 		*addr = DISP_REG_CONFIG_DPI_SEL_IN;
217 		value = DPI1_SEL_IN_RDMA2;
218 	} else if (cur == DDP_COMPONENT_RDMA2 && next == DDP_COMPONENT_DSI0) {
219 		*addr = DISP_REG_CONFIG_DSIE_SEL_IN;
220 		value = DSI0_SEL_IN_RDMA2;
221 	} else if (cur == DDP_COMPONENT_RDMA2 && next == DDP_COMPONENT_DSI1) {
222 		*addr = DISP_REG_CONFIG_DSIO_SEL_IN;
223 		value = DSI1_SEL_IN_RDMA2;
224 	} else if (cur == DDP_COMPONENT_RDMA2 && next == DDP_COMPONENT_DSI2) {
225 		*addr = DISP_REG_CONFIG_DSIE_SEL_IN;
226 		value = DSI2_SEL_IN_RDMA2;
227 	} else if (cur == DDP_COMPONENT_RDMA2 && next == DDP_COMPONENT_DSI3) {
228 		*addr = DISP_REG_CONFIG_DSIE_SEL_IN;
229 		value = DSI3_SEL_IN_RDMA2;
230 	} else if (cur == DDP_COMPONENT_OVL1 && next == DDP_COMPONENT_COLOR1) {
231 		*addr = DISP_REG_CONFIG_DISP_COLOR1_SEL_IN;
232 		value = COLOR1_SEL_IN_OVL1;
233 	} else if (cur == DDP_COMPONENT_BLS && next == DDP_COMPONENT_DSI0) {
234 		*addr = DISP_REG_CONFIG_DSI_SEL;
235 		value = DSI_SEL_IN_BLS;
236 	} else {
237 		value = 0;
238 	}
239 
240 	return value;
241 }
242 
243 static void mtk_mmsys_ddp_sout_sel(void __iomem *config_regs,
244 				   enum mtk_ddp_comp_id cur,
245 				   enum mtk_ddp_comp_id next)
246 {
247 	if (cur == DDP_COMPONENT_BLS && next == DDP_COMPONENT_DSI0) {
248 		writel_relaxed(BLS_TO_DSI_RDMA1_TO_DPI1,
249 			       config_regs + DISP_REG_CONFIG_OUT_SEL);
250 	} else if (cur == DDP_COMPONENT_BLS && next == DDP_COMPONENT_DPI0) {
251 		writel_relaxed(BLS_TO_DPI_RDMA1_TO_DSI,
252 			       config_regs + DISP_REG_CONFIG_OUT_SEL);
253 		writel_relaxed(DSI_SEL_IN_RDMA,
254 			       config_regs + DISP_REG_CONFIG_DSI_SEL);
255 		writel_relaxed(DPI_SEL_IN_BLS,
256 			       config_regs + DISP_REG_CONFIG_DPI_SEL);
257 	}
258 }
259 
260 void mtk_mmsys_ddp_connect(struct device *dev,
261 			   enum mtk_ddp_comp_id cur,
262 			   enum mtk_ddp_comp_id next)
263 {
264 	void __iomem *config_regs = dev_get_drvdata(dev);
265 	unsigned int addr, value, reg;
266 
267 	value = mtk_mmsys_ddp_mout_en(cur, next, &addr);
268 	if (value) {
269 		reg = readl_relaxed(config_regs + addr) | value;
270 		writel_relaxed(reg, config_regs + addr);
271 	}
272 
273 	mtk_mmsys_ddp_sout_sel(config_regs, cur, next);
274 
275 	value = mtk_mmsys_ddp_sel_in(cur, next, &addr);
276 	if (value) {
277 		reg = readl_relaxed(config_regs + addr) | value;
278 		writel_relaxed(reg, config_regs + addr);
279 	}
280 }
281 EXPORT_SYMBOL_GPL(mtk_mmsys_ddp_connect);
282 
283 void mtk_mmsys_ddp_disconnect(struct device *dev,
284 			      enum mtk_ddp_comp_id cur,
285 			      enum mtk_ddp_comp_id next)
286 {
287 	void __iomem *config_regs = dev_get_drvdata(dev);
288 	unsigned int addr, value, reg;
289 
290 	value = mtk_mmsys_ddp_mout_en(cur, next, &addr);
291 	if (value) {
292 		reg = readl_relaxed(config_regs + addr) & ~value;
293 		writel_relaxed(reg, config_regs + addr);
294 	}
295 
296 	value = mtk_mmsys_ddp_sel_in(cur, next, &addr);
297 	if (value) {
298 		reg = readl_relaxed(config_regs + addr) & ~value;
299 		writel_relaxed(reg, config_regs + addr);
300 	}
301 }
302 EXPORT_SYMBOL_GPL(mtk_mmsys_ddp_disconnect);
303 
304 static int mtk_mmsys_probe(struct platform_device *pdev)
305 {
306 	const struct mtk_mmsys_driver_data *data;
307 	struct device *dev = &pdev->dev;
308 	struct platform_device *clks;
309 	struct platform_device *drm;
310 	void __iomem *config_regs;
311 	struct resource *mem;
312 	int ret;
313 
314 	mem = platform_get_resource(pdev, IORESOURCE_MEM, 0);
315 	config_regs = devm_ioremap_resource(dev, mem);
316 	if (IS_ERR(config_regs)) {
317 		ret = PTR_ERR(config_regs);
318 		dev_err(dev, "Failed to ioremap mmsys-config resource: %d\n",
319 			ret);
320 		return ret;
321 	}
322 
323 	platform_set_drvdata(pdev, config_regs);
324 
325 	data = of_device_get_match_data(&pdev->dev);
326 
327 	clks = platform_device_register_data(&pdev->dev, data->clk_driver,
328 					     PLATFORM_DEVID_AUTO, NULL, 0);
329 	if (IS_ERR(clks))
330 		return PTR_ERR(clks);
331 
332 	drm = platform_device_register_data(&pdev->dev, "mediatek-drm",
333 					    PLATFORM_DEVID_AUTO, NULL, 0);
334 	if (IS_ERR(drm)) {
335 		platform_device_unregister(clks);
336 		return PTR_ERR(drm);
337 	}
338 
339 	return 0;
340 }
341 
342 static const struct of_device_id of_match_mtk_mmsys[] = {
343 	{
344 		.compatible = "mediatek,mt2701-mmsys",
345 		.data = &mt2701_mmsys_driver_data,
346 	},
347 	{
348 		.compatible = "mediatek,mt2712-mmsys",
349 		.data = &mt2712_mmsys_driver_data,
350 	},
351 	{
352 		.compatible = "mediatek,mt6779-mmsys",
353 		.data = &mt6779_mmsys_driver_data,
354 	},
355 	{
356 		.compatible = "mediatek,mt6797-mmsys",
357 		.data = &mt6797_mmsys_driver_data,
358 	},
359 	{
360 		.compatible = "mediatek,mt8173-mmsys",
361 		.data = &mt8173_mmsys_driver_data,
362 	},
363 	{
364 		.compatible = "mediatek,mt8183-mmsys",
365 		.data = &mt8183_mmsys_driver_data,
366 	},
367 	{ }
368 };
369 
370 static struct platform_driver mtk_mmsys_drv = {
371 	.driver = {
372 		.name = "mtk-mmsys",
373 		.of_match_table = of_match_mtk_mmsys,
374 	},
375 	.probe = mtk_mmsys_probe,
376 };
377 
378 builtin_platform_driver(mtk_mmsys_drv);
379