summaryrefslogtreecommitdiff
path: root/drivers/soc/mediatek/mtk-mmsys.c
blob: 06d8e83a2cb56f5afdc25ab423083b7d733befe8 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
// SPDX-License-Identifier: GPL-2.0-only
/*
 * Copyright (c) 2014 MediaTek Inc.
 * Author: James Liao <jamesjj.liao@mediatek.com>
 */

#include <linux/delay.h>
#include <linux/device.h>
#include <linux/io.h>
#include <linux/of_device.h>
#include <linux/platform_device.h>
#include <linux/reset-controller.h>
#include <linux/soc/mediatek/mtk-mmsys.h>

#include "mtk-mmsys.h"
#include "mt8167-mmsys.h"
#include "mt8183-mmsys.h"
#include "mt8186-mmsys.h"
#include "mt8192-mmsys.h"
#include "mt8195-mmsys.h"
#include "mt8365-mmsys.h"

static const struct mtk_mmsys_driver_data mt2701_mmsys_driver_data = {
	.clk_driver = "clk-mt2701-mm",
	.routes = mmsys_default_routing_table,
	.num_routes = ARRAY_SIZE(mmsys_default_routing_table),
};

static const struct mtk_mmsys_match_data mt2701_mmsys_match_data = {
	.num_drv_data = 1,
	.drv_data = {
		&mt2701_mmsys_driver_data,
	},
};

static const struct mtk_mmsys_driver_data mt2712_mmsys_driver_data = {
	.clk_driver = "clk-mt2712-mm",
	.routes = mmsys_default_routing_table,
	.num_routes = ARRAY_SIZE(mmsys_default_routing_table),
};

static const struct mtk_mmsys_match_data mt2712_mmsys_match_data = {
	.num_drv_data = 1,
	.drv_data = {
		&mt2712_mmsys_driver_data,
	},
};

static const struct mtk_mmsys_driver_data mt6779_mmsys_driver_data = {
	.clk_driver = "clk-mt6779-mm",
};

static const struct mtk_mmsys_match_data mt6779_mmsys_match_data = {
	.num_drv_data = 1,
	.drv_data = {
		&mt6779_mmsys_driver_data,
	},
};

static const struct mtk_mmsys_driver_data mt6797_mmsys_driver_data = {
	.clk_driver = "clk-mt6797-mm",
};

static const struct mtk_mmsys_match_data mt6797_mmsys_match_data = {
	.num_drv_data = 1,
	.drv_data = {
		&mt6797_mmsys_driver_data,
	},
};

static const struct mtk_mmsys_driver_data mt8167_mmsys_driver_data = {
	.clk_driver = "clk-mt8167-mm",
	.routes = mt8167_mmsys_routing_table,
	.num_routes = ARRAY_SIZE(mt8167_mmsys_routing_table),
};

static const struct mtk_mmsys_match_data mt8167_mmsys_match_data = {
	.num_drv_data = 1,
	.drv_data = {
		&mt8167_mmsys_driver_data,
	},
};

static const struct mtk_mmsys_driver_data mt8173_mmsys_driver_data = {
	.clk_driver = "clk-mt8173-mm",
	.routes = mmsys_default_routing_table,
	.num_routes = ARRAY_SIZE(mmsys_default_routing_table),
	.sw0_rst_offset = MT8183_MMSYS_SW0_RST_B,
};

static const struct mtk_mmsys_match_data mt8173_mmsys_match_data = {
	.num_drv_data = 1,
	.drv_data = {
		&mt8173_mmsys_driver_data,
	},
};

static const struct mtk_mmsys_driver_data mt8183_mmsys_driver_data = {
	.clk_driver = "clk-mt8183-mm",
	.routes = mmsys_mt8183_routing_table,
	.num_routes = ARRAY_SIZE(mmsys_mt8183_routing_table),
	.sw0_rst_offset = MT8183_MMSYS_SW0_RST_B,
};

static const struct mtk_mmsys_match_data mt8183_mmsys_match_data = {
	.num_drv_data = 1,
	.drv_data = {
		&mt8183_mmsys_driver_data,
	},
};

static const struct mtk_mmsys_driver_data mt8186_mmsys_driver_data = {
	.clk_driver = "clk-mt8186-mm",
	.routes = mmsys_mt8186_routing_table,
	.num_routes = ARRAY_SIZE(mmsys_mt8186_routing_table),
	.sw0_rst_offset = MT8186_MMSYS_SW0_RST_B,
};

static const struct mtk_mmsys_match_data mt8186_mmsys_match_data = {
	.num_drv_data = 1,
	.drv_data = {
		&mt8186_mmsys_driver_data,
	},
};

static const struct mtk_mmsys_driver_data mt8192_mmsys_driver_data = {
	.clk_driver = "clk-mt8192-mm",
	.routes = mmsys_mt8192_routing_table,
	.num_routes = ARRAY_SIZE(mmsys_mt8192_routing_table),
	.sw0_rst_offset = MT8186_MMSYS_SW0_RST_B,
};

static const struct mtk_mmsys_match_data mt8192_mmsys_match_data = {
	.num_drv_data = 1,
	.drv_data = {
		&mt8192_mmsys_driver_data,
	},
};

static const struct mtk_mmsys_driver_data mt8195_vdosys0_driver_data = {
	.io_start = 0x1c01a000,
	.clk_driver = "clk-mt8195-vdo0",
	.routes = mmsys_mt8195_routing_table,
	.num_routes = ARRAY_SIZE(mmsys_mt8195_routing_table),
};

static const struct mtk_mmsys_driver_data mt8195_vdosys1_driver_data = {
	.io_start = 0x1c100000,
	.clk_driver = "clk-mt8195-vdo1",
};

static const struct mtk_mmsys_match_data mt8195_mmsys_match_data = {
	.num_drv_data = 2,
	.drv_data = {
		&mt8195_vdosys0_driver_data,
		&mt8195_vdosys1_driver_data,
	},
};

static const struct mtk_mmsys_driver_data mt8365_mmsys_driver_data = {
	.clk_driver = "clk-mt8365-mm",
	.routes = mt8365_mmsys_routing_table,
	.num_routes = ARRAY_SIZE(mt8365_mmsys_routing_table),
};

static const struct mtk_mmsys_match_data mt8365_mmsys_match_data = {
	.num_drv_data = 1,
	.drv_data = {
		&mt8365_mmsys_driver_data,
	},
};

struct mtk_mmsys {
	void __iomem *regs;
	const struct mtk_mmsys_driver_data *data;
	spinlock_t lock; /* protects mmsys_sw_rst_b reg */
	struct reset_controller_dev rcdev;
	phys_addr_t io_start;
};

static int mtk_mmsys_find_match_drvdata(struct mtk_mmsys *mmsys,
					const struct mtk_mmsys_match_data *match)
{
	int i;

	for (i = 0; i < match->num_drv_data; i++)
		if (mmsys->io_start == match->drv_data[i]->io_start)
			return i;

	return -EINVAL;
}

void mtk_mmsys_ddp_connect(struct device *dev,
			   enum mtk_ddp_comp_id cur,
			   enum mtk_ddp_comp_id next)
{
	struct mtk_mmsys *mmsys = dev_get_drvdata(dev);
	const struct mtk_mmsys_routes *routes = mmsys->data->routes;
	u32 reg;
	int i;

	for (i = 0; i < mmsys->data->num_routes; i++)
		if (cur == routes[i].from_comp && next == routes[i].to_comp) {
			reg = readl_relaxed(mmsys->regs + routes[i].addr);
			reg &= ~routes[i].mask;
			reg |= routes[i].val;
			writel_relaxed(reg, mmsys->regs + routes[i].addr);
		}
}
EXPORT_SYMBOL_GPL(mtk_mmsys_ddp_connect);

void mtk_mmsys_ddp_disconnect(struct device *dev,
			      enum mtk_ddp_comp_id cur,
			      enum mtk_ddp_comp_id next)
{
	struct mtk_mmsys *mmsys = dev_get_drvdata(dev);
	const struct mtk_mmsys_routes *routes = mmsys->data->routes;
	u32 reg;
	int i;

	for (i = 0; i < mmsys->data->num_routes; i++)
		if (cur == routes[i].from_comp && next == routes[i].to_comp) {
			reg = readl_relaxed(mmsys->regs + routes[i].addr);
			reg &= ~routes[i].mask;
			writel_relaxed(reg, mmsys->regs + routes[i].addr);
		}
}
EXPORT_SYMBOL_GPL(mtk_mmsys_ddp_disconnect);

static int mtk_mmsys_reset_update(struct reset_controller_dev *rcdev, unsigned long id,
				  bool assert)
{
	struct mtk_mmsys *mmsys = container_of(rcdev, struct mtk_mmsys, rcdev);
	unsigned long flags;
	u32 reg;

	spin_lock_irqsave(&mmsys->lock, flags);

	reg = readl_relaxed(mmsys->regs + mmsys->data->sw0_rst_offset);

	if (assert)
		reg &= ~BIT(id);
	else
		reg |= BIT(id);

	writel_relaxed(reg, mmsys->regs + mmsys->data->sw0_rst_offset);

	spin_unlock_irqrestore(&mmsys->lock, flags);

	return 0;
}

static int mtk_mmsys_reset_assert(struct reset_controller_dev *rcdev, unsigned long id)
{
	return mtk_mmsys_reset_update(rcdev, id, true);
}

static int mtk_mmsys_reset_deassert(struct reset_controller_dev *rcdev, unsigned long id)
{
	return mtk_mmsys_reset_update(rcdev, id, false);
}

static int mtk_mmsys_reset(struct reset_controller_dev *rcdev, unsigned long id)
{
	int ret;

	ret = mtk_mmsys_reset_assert(rcdev, id);
	if (ret)
		return ret;

	usleep_range(1000, 1100);

	return mtk_mmsys_reset_deassert(rcdev, id);
}

static const struct reset_control_ops mtk_mmsys_reset_ops = {
	.assert = mtk_mmsys_reset_assert,
	.deassert = mtk_mmsys_reset_deassert,
	.reset = mtk_mmsys_reset,
};

static int mtk_mmsys_probe(struct platform_device *pdev)
{
	struct device *dev = &pdev->dev;
	struct platform_device *clks;
	struct platform_device *drm;
	const struct mtk_mmsys_match_data *match_data;
	struct mtk_mmsys *mmsys;
	struct resource *res;
	int ret;

	mmsys = devm_kzalloc(dev, sizeof(*mmsys), GFP_KERNEL);
	if (!mmsys)
		return -ENOMEM;

	mmsys->regs = devm_platform_ioremap_resource(pdev, 0);
	if (IS_ERR(mmsys->regs)) {
		ret = PTR_ERR(mmsys->regs);
		dev_err(dev, "Failed to ioremap mmsys registers: %d\n", ret);
		return ret;
	}

	spin_lock_init(&mmsys->lock);

	mmsys->rcdev.owner = THIS_MODULE;
	mmsys->rcdev.nr_resets = 32;
	mmsys->rcdev.ops = &mtk_mmsys_reset_ops;
	mmsys->rcdev.of_node = pdev->dev.of_node;
	ret = devm_reset_controller_register(&pdev->dev, &mmsys->rcdev);
	if (ret) {
		dev_err(&pdev->dev, "Couldn't register mmsys reset controller: %d\n", ret);
		return ret;
	}

	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
	if (!res) {
		dev_err(dev, "Couldn't get mmsys resource\n");
		return -EINVAL;
	}
	mmsys->io_start = res->start;

	match_data = of_device_get_match_data(dev);
	if (match_data->num_drv_data > 1) {
		/* This SoC has multiple mmsys channels */
		ret = mtk_mmsys_find_match_drvdata(mmsys, match_data);
		if (ret < 0) {
			dev_err(dev, "Couldn't get match driver data\n");
			return ret;
		}
		mmsys->data = match_data->drv_data[ret];
	} else {
		dev_dbg(dev, "Using single mmsys channel\n");
		mmsys->data = match_data->drv_data[0];
	}

	platform_set_drvdata(pdev, mmsys);

	clks = platform_device_register_data(&pdev->dev, mmsys->data->clk_driver,
					     PLATFORM_DEVID_AUTO, NULL, 0);
	if (IS_ERR(clks))
		return PTR_ERR(clks);

	drm = platform_device_register_data(&pdev->dev, "mediatek-drm",
					    PLATFORM_DEVID_AUTO, NULL, 0);
	if (IS_ERR(drm)) {
		platform_device_unregister(clks);
		return PTR_ERR(drm);
	}

	return 0;
}

static const struct of_device_id of_match_mtk_mmsys[] = {
	{
		.compatible = "mediatek,mt2701-mmsys",
		.data = &mt2701_mmsys_match_data,
	},
	{
		.compatible = "mediatek,mt2712-mmsys",
		.data = &mt2712_mmsys_match_data,
	},
	{
		.compatible = "mediatek,mt6779-mmsys",
		.data = &mt6779_mmsys_match_data,
	},
	{
		.compatible = "mediatek,mt6797-mmsys",
		.data = &mt6797_mmsys_match_data,
	},
	{
		.compatible = "mediatek,mt8167-mmsys",
		.data = &mt8167_mmsys_match_data,
	},
	{
		.compatible = "mediatek,mt8173-mmsys",
		.data = &mt8173_mmsys_match_data,
	},
	{
		.compatible = "mediatek,mt8183-mmsys",
		.data = &mt8183_mmsys_match_data,
	},
	{
		.compatible = "mediatek,mt8186-mmsys",
		.data = &mt8186_mmsys_match_data,
	},
	{
		.compatible = "mediatek,mt8192-mmsys",
		.data = &mt8192_mmsys_match_data,
	},
	{
		.compatible = "mediatek,mt8195-mmsys",
		.data = &mt8195_mmsys_match_data,
	},
	{
		.compatible = "mediatek,mt8365-mmsys",
		.data = &mt8365_mmsys_match_data,
	},
	{ }
};

static struct platform_driver mtk_mmsys_drv = {
	.driver = {
		.name = "mtk-mmsys",
		.of_match_table = of_match_mtk_mmsys,
	},
	.probe = mtk_mmsys_probe,
};

builtin_platform_driver(mtk_mmsys_drv);