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/delay.h>
8#include <linux/device.h>
9#include <linux/io.h>
10#include <linux/module.h>
11#include <linux/of.h>
12#include <linux/platform_device.h>
13#include <linux/reset-controller.h>
14#include <linux/soc/mediatek/mtk-mmsys.h>
15
16#include "mtk-mmsys.h"
17#include "mt8167-mmsys.h"
18#include "mt8173-mmsys.h"
19#include "mt8183-mmsys.h"
20#include "mt8186-mmsys.h"
21#include "mt8188-mmsys.h"
22#include "mt8192-mmsys.h"
23#include "mt8195-mmsys.h"
24#include "mt8365-mmsys.h"
25
26#define MMSYS_SW_RESET_PER_REG 32
27
28static const struct mtk_mmsys_driver_data mt2701_mmsys_driver_data = {
29 .clk_driver = "clk-mt2701-mm",
30 .routes = mmsys_default_routing_table,
31 .num_routes = ARRAY_SIZE(mmsys_default_routing_table),
32};
33
34static const struct mtk_mmsys_driver_data mt2712_mmsys_driver_data = {
35 .clk_driver = "clk-mt2712-mm",
36 .routes = mmsys_default_routing_table,
37 .num_routes = ARRAY_SIZE(mmsys_default_routing_table),
38};
39
40static const struct mtk_mmsys_driver_data mt6779_mmsys_driver_data = {
41 .clk_driver = "clk-mt6779-mm",
42};
43
44static const struct mtk_mmsys_driver_data mt6795_mmsys_driver_data = {
45 .clk_driver = "clk-mt6795-mm",
46 .routes = mt8173_mmsys_routing_table,
47 .num_routes = ARRAY_SIZE(mt8173_mmsys_routing_table),
48 .sw0_rst_offset = MT8183_MMSYS_SW0_RST_B,
49 .num_resets = 64,
50};
51
52static const struct mtk_mmsys_driver_data mt6797_mmsys_driver_data = {
53 .clk_driver = "clk-mt6797-mm",
54};
55
56static const struct mtk_mmsys_driver_data mt8167_mmsys_driver_data = {
57 .clk_driver = "clk-mt8167-mm",
58 .routes = mt8167_mmsys_routing_table,
59 .num_routes = ARRAY_SIZE(mt8167_mmsys_routing_table),
60};
61
62static const struct mtk_mmsys_driver_data mt8173_mmsys_driver_data = {
63 .clk_driver = "clk-mt8173-mm",
64 .routes = mt8173_mmsys_routing_table,
65 .num_routes = ARRAY_SIZE(mt8173_mmsys_routing_table),
66 .sw0_rst_offset = MT8183_MMSYS_SW0_RST_B,
67 .num_resets = 64,
68};
69
70static const struct mtk_mmsys_driver_data mt8183_mmsys_driver_data = {
71 .clk_driver = "clk-mt8183-mm",
72 .routes = mmsys_mt8183_routing_table,
73 .num_routes = ARRAY_SIZE(mmsys_mt8183_routing_table),
74 .sw0_rst_offset = MT8183_MMSYS_SW0_RST_B,
75 .num_resets = 32,
76};
77
78static const struct mtk_mmsys_driver_data mt8186_mmsys_driver_data = {
79 .clk_driver = "clk-mt8186-mm",
80 .routes = mmsys_mt8186_routing_table,
81 .num_routes = ARRAY_SIZE(mmsys_mt8186_routing_table),
82 .sw0_rst_offset = MT8186_MMSYS_SW0_RST_B,
83 .num_resets = 32,
84};
85
86static const struct mtk_mmsys_driver_data mt8188_vdosys0_driver_data = {
87 .clk_driver = "clk-mt8188-vdo0",
88 .routes = mmsys_mt8188_routing_table,
89 .num_routes = ARRAY_SIZE(mmsys_mt8188_routing_table),
90 .sw0_rst_offset = MT8188_VDO0_SW0_RST_B,
91 .rst_tb = mmsys_mt8188_vdo0_rst_tb,
92 .num_resets = ARRAY_SIZE(mmsys_mt8188_vdo0_rst_tb),
93};
94
95static const struct mtk_mmsys_driver_data mt8188_vdosys1_driver_data = {
96 .clk_driver = "clk-mt8188-vdo1",
97 .routes = mmsys_mt8188_vdo1_routing_table,
98 .num_routes = ARRAY_SIZE(mmsys_mt8188_vdo1_routing_table),
99 .sw0_rst_offset = MT8188_VDO1_SW0_RST_B,
100 .rst_tb = mmsys_mt8188_vdo1_rst_tb,
101 .num_resets = ARRAY_SIZE(mmsys_mt8188_vdo1_rst_tb),
102 .vsync_len = 1,
103};
104
105static const struct mtk_mmsys_driver_data mt8188_vppsys0_driver_data = {
106 .clk_driver = "clk-mt8188-vpp0",
107 .is_vppsys = true,
108};
109
110static const struct mtk_mmsys_driver_data mt8188_vppsys1_driver_data = {
111 .clk_driver = "clk-mt8188-vpp1",
112 .is_vppsys = true,
113};
114
115static const struct mtk_mmsys_driver_data mt8192_mmsys_driver_data = {
116 .clk_driver = "clk-mt8192-mm",
117 .routes = mmsys_mt8192_routing_table,
118 .num_routes = ARRAY_SIZE(mmsys_mt8192_routing_table),
119 .sw0_rst_offset = MT8186_MMSYS_SW0_RST_B,
120 .num_resets = 32,
121};
122
123static const struct mtk_mmsys_driver_data mt8195_vdosys0_driver_data = {
124 .clk_driver = "clk-mt8195-vdo0",
125 .routes = mmsys_mt8195_routing_table,
126 .num_routes = ARRAY_SIZE(mmsys_mt8195_routing_table),
127};
128
129static const struct mtk_mmsys_driver_data mt8195_vdosys1_driver_data = {
130 .clk_driver = "clk-mt8195-vdo1",
131 .routes = mmsys_mt8195_vdo1_routing_table,
132 .num_routes = ARRAY_SIZE(mmsys_mt8195_vdo1_routing_table),
133 .sw0_rst_offset = MT8195_VDO1_SW0_RST_B,
134 .num_resets = 64,
135};
136
137static const struct mtk_mmsys_driver_data mt8195_vppsys0_driver_data = {
138 .clk_driver = "clk-mt8195-vpp0",
139 .is_vppsys = true,
140};
141
142static const struct mtk_mmsys_driver_data mt8195_vppsys1_driver_data = {
143 .clk_driver = "clk-mt8195-vpp1",
144 .is_vppsys = true,
145};
146
147static const struct mtk_mmsys_driver_data mt8365_mmsys_driver_data = {
148 .clk_driver = "clk-mt8365-mm",
149 .routes = mt8365_mmsys_routing_table,
150 .num_routes = ARRAY_SIZE(mt8365_mmsys_routing_table),
151};
152
153struct mtk_mmsys {
154 void __iomem *regs;
155 const struct mtk_mmsys_driver_data *data;
156 struct platform_device *clks_pdev;
157 struct platform_device *drm_pdev;
158 spinlock_t lock; /* protects mmsys_sw_rst_b reg */
159 struct reset_controller_dev rcdev;
160 struct cmdq_client_reg cmdq_base;
161};
162
163static void mtk_mmsys_update_bits(struct mtk_mmsys *mmsys, u32 offset, u32 mask, u32 val,
164 struct cmdq_pkt *cmdq_pkt)
165{
166 int ret;
167 u32 tmp;
168
169 if (mmsys->cmdq_base.size && cmdq_pkt) {
170 ret = cmdq_pkt_write_mask(pkt: cmdq_pkt, subsys: mmsys->cmdq_base.subsys,
171 offset: mmsys->cmdq_base.offset + offset, value: val,
172 mask);
173 if (ret)
174 pr_debug("CMDQ unavailable: using CPU write\n");
175 else
176 return;
177 }
178 tmp = readl_relaxed(mmsys->regs + offset);
179 tmp = (tmp & ~mask) | (val & mask);
180 writel_relaxed(tmp, mmsys->regs + offset);
181}
182
183void mtk_mmsys_ddp_connect(struct device *dev,
184 enum mtk_ddp_comp_id cur,
185 enum mtk_ddp_comp_id next)
186{
187 struct mtk_mmsys *mmsys = dev_get_drvdata(dev);
188 const struct mtk_mmsys_routes *routes = mmsys->data->routes;
189 int i;
190
191 for (i = 0; i < mmsys->data->num_routes; i++)
192 if (cur == routes[i].from_comp && next == routes[i].to_comp)
193 mtk_mmsys_update_bits(mmsys, offset: routes[i].addr, mask: routes[i].mask,
194 val: routes[i].val, NULL);
195
196 if (mmsys->data->vsync_len)
197 mtk_mmsys_update_bits(mmsys, MT8188_VDO1_MIXER_VSYNC_LEN, GENMASK(31, 0),
198 val: mmsys->data->vsync_len, NULL);
199}
200EXPORT_SYMBOL_GPL(mtk_mmsys_ddp_connect);
201
202void mtk_mmsys_ddp_disconnect(struct device *dev,
203 enum mtk_ddp_comp_id cur,
204 enum mtk_ddp_comp_id next)
205{
206 struct mtk_mmsys *mmsys = dev_get_drvdata(dev);
207 const struct mtk_mmsys_routes *routes = mmsys->data->routes;
208 int i;
209
210 for (i = 0; i < mmsys->data->num_routes; i++)
211 if (cur == routes[i].from_comp && next == routes[i].to_comp)
212 mtk_mmsys_update_bits(mmsys, offset: routes[i].addr, mask: routes[i].mask, val: 0, NULL);
213}
214EXPORT_SYMBOL_GPL(mtk_mmsys_ddp_disconnect);
215
216void mtk_mmsys_merge_async_config(struct device *dev, int idx, int width, int height,
217 struct cmdq_pkt *cmdq_pkt)
218{
219 mtk_mmsys_update_bits(mmsys: dev_get_drvdata(dev), MT8195_VDO1_MERGE0_ASYNC_CFG_WD + 0x10 * idx,
220 mask: ~0, val: height << 16 | width, cmdq_pkt);
221}
222EXPORT_SYMBOL_GPL(mtk_mmsys_merge_async_config);
223
224void mtk_mmsys_hdr_config(struct device *dev, int be_width, int be_height,
225 struct cmdq_pkt *cmdq_pkt)
226{
227 mtk_mmsys_update_bits(mmsys: dev_get_drvdata(dev), MT8195_VDO1_HDRBE_ASYNC_CFG_WD, mask: ~0,
228 val: be_height << 16 | be_width, cmdq_pkt);
229}
230EXPORT_SYMBOL_GPL(mtk_mmsys_hdr_config);
231
232void mtk_mmsys_mixer_in_config(struct device *dev, int idx, bool alpha_sel, u16 alpha,
233 u8 mode, u32 biwidth, struct cmdq_pkt *cmdq_pkt)
234{
235 struct mtk_mmsys *mmsys = dev_get_drvdata(dev);
236
237 mtk_mmsys_update_bits(mmsys, MT8195_VDO1_MIXER_IN1_ALPHA + (idx - 1) * 4, mask: ~0,
238 val: alpha << 16 | alpha, cmdq_pkt);
239 mtk_mmsys_update_bits(mmsys, MT8195_VDO1_HDR_TOP_CFG, BIT(19 + idx),
240 val: alpha_sel << (19 + idx), cmdq_pkt);
241 mtk_mmsys_update_bits(mmsys, MT8195_VDO1_MIXER_IN1_PAD + (idx - 1) * 4,
242 GENMASK(31, 16) | GENMASK(1, 0), val: biwidth << 16 | mode, cmdq_pkt);
243}
244EXPORT_SYMBOL_GPL(mtk_mmsys_mixer_in_config);
245
246void mtk_mmsys_mixer_in_channel_swap(struct device *dev, int idx, bool channel_swap,
247 struct cmdq_pkt *cmdq_pkt)
248{
249 mtk_mmsys_update_bits(mmsys: dev_get_drvdata(dev), MT8195_VDO1_MIXER_IN1_PAD + (idx - 1) * 4,
250 BIT(4), val: channel_swap << 4, cmdq_pkt);
251}
252EXPORT_SYMBOL_GPL(mtk_mmsys_mixer_in_channel_swap);
253
254void mtk_mmsys_ddp_dpi_fmt_config(struct device *dev, u32 val)
255{
256 struct mtk_mmsys *mmsys = dev_get_drvdata(dev);
257
258 switch (val) {
259 case MTK_DPI_RGB888_SDR_CON:
260 mtk_mmsys_update_bits(mmsys, MT8186_MMSYS_DPI_OUTPUT_FORMAT,
261 MT8186_DPI_FORMAT_MASK, MT8186_DPI_RGB888_SDR_CON, NULL);
262 break;
263 case MTK_DPI_RGB565_SDR_CON:
264 mtk_mmsys_update_bits(mmsys, MT8186_MMSYS_DPI_OUTPUT_FORMAT,
265 MT8186_DPI_FORMAT_MASK, MT8186_DPI_RGB565_SDR_CON, NULL);
266 break;
267 case MTK_DPI_RGB565_DDR_CON:
268 mtk_mmsys_update_bits(mmsys, MT8186_MMSYS_DPI_OUTPUT_FORMAT,
269 MT8186_DPI_FORMAT_MASK, MT8186_DPI_RGB565_DDR_CON, NULL);
270 break;
271 case MTK_DPI_RGB888_DDR_CON:
272 default:
273 mtk_mmsys_update_bits(mmsys, MT8186_MMSYS_DPI_OUTPUT_FORMAT,
274 MT8186_DPI_FORMAT_MASK, MT8186_DPI_RGB888_DDR_CON, NULL);
275 break;
276 }
277}
278EXPORT_SYMBOL_GPL(mtk_mmsys_ddp_dpi_fmt_config);
279
280void mtk_mmsys_vpp_rsz_merge_config(struct device *dev, u32 id, bool enable,
281 struct cmdq_pkt *cmdq_pkt)
282{
283 u32 reg;
284
285 switch (id) {
286 case 2:
287 reg = MT8195_SVPP2_BUF_BF_RSZ_SWITCH;
288 break;
289 case 3:
290 reg = MT8195_SVPP3_BUF_BF_RSZ_SWITCH;
291 break;
292 default:
293 dev_err(dev, "Invalid id %d\n", id);
294 return;
295 }
296
297 mtk_mmsys_update_bits(mmsys: dev_get_drvdata(dev), offset: reg, mask: ~0, val: enable, cmdq_pkt);
298}
299EXPORT_SYMBOL_GPL(mtk_mmsys_vpp_rsz_merge_config);
300
301void mtk_mmsys_vpp_rsz_dcm_config(struct device *dev, bool enable,
302 struct cmdq_pkt *cmdq_pkt)
303{
304 u32 client;
305
306 client = MT8195_SVPP1_MDP_RSZ;
307 mtk_mmsys_update_bits(mmsys: dev_get_drvdata(dev),
308 MT8195_VPP1_HW_DCM_1ST_DIS0, mask: client,
309 val: ((enable) ? client : 0), cmdq_pkt);
310 mtk_mmsys_update_bits(mmsys: dev_get_drvdata(dev),
311 MT8195_VPP1_HW_DCM_2ND_DIS0, mask: client,
312 val: ((enable) ? client : 0), cmdq_pkt);
313
314 client = MT8195_SVPP2_MDP_RSZ | MT8195_SVPP3_MDP_RSZ;
315 mtk_mmsys_update_bits(mmsys: dev_get_drvdata(dev),
316 MT8195_VPP1_HW_DCM_1ST_DIS1, mask: client,
317 val: ((enable) ? client : 0), cmdq_pkt);
318 mtk_mmsys_update_bits(mmsys: dev_get_drvdata(dev),
319 MT8195_VPP1_HW_DCM_2ND_DIS1, mask: client,
320 val: ((enable) ? client : 0), cmdq_pkt);
321}
322EXPORT_SYMBOL_GPL(mtk_mmsys_vpp_rsz_dcm_config);
323
324static int mtk_mmsys_reset_update(struct reset_controller_dev *rcdev, unsigned long id,
325 bool assert)
326{
327 struct mtk_mmsys *mmsys = container_of(rcdev, struct mtk_mmsys, rcdev);
328 unsigned long flags;
329 u32 offset;
330 u32 reg;
331
332 if (mmsys->data->rst_tb) {
333 if (id >= mmsys->data->num_resets) {
334 dev_err(rcdev->dev, "Invalid reset ID: %lu (>=%u)\n",
335 id, mmsys->data->num_resets);
336 return -EINVAL;
337 }
338 id = mmsys->data->rst_tb[id];
339 }
340
341 offset = (id / MMSYS_SW_RESET_PER_REG) * sizeof(u32);
342 id = id % MMSYS_SW_RESET_PER_REG;
343 reg = mmsys->data->sw0_rst_offset + offset;
344
345 spin_lock_irqsave(&mmsys->lock, flags);
346
347 if (assert)
348 mtk_mmsys_update_bits(mmsys, offset: reg, BIT(id), val: 0, NULL);
349 else
350 mtk_mmsys_update_bits(mmsys, offset: reg, BIT(id), BIT(id), NULL);
351
352 spin_unlock_irqrestore(lock: &mmsys->lock, flags);
353
354 return 0;
355}
356
357static int mtk_mmsys_reset_assert(struct reset_controller_dev *rcdev, unsigned long id)
358{
359 return mtk_mmsys_reset_update(rcdev, id, assert: true);
360}
361
362static int mtk_mmsys_reset_deassert(struct reset_controller_dev *rcdev, unsigned long id)
363{
364 return mtk_mmsys_reset_update(rcdev, id, assert: false);
365}
366
367static int mtk_mmsys_reset(struct reset_controller_dev *rcdev, unsigned long id)
368{
369 int ret;
370
371 ret = mtk_mmsys_reset_assert(rcdev, id);
372 if (ret)
373 return ret;
374
375 usleep_range(min: 1000, max: 1100);
376
377 return mtk_mmsys_reset_deassert(rcdev, id);
378}
379
380static const struct reset_control_ops mtk_mmsys_reset_ops = {
381 .assert = mtk_mmsys_reset_assert,
382 .deassert = mtk_mmsys_reset_deassert,
383 .reset = mtk_mmsys_reset,
384};
385
386static int mtk_mmsys_probe(struct platform_device *pdev)
387{
388 struct device *dev = &pdev->dev;
389 struct platform_device *clks;
390 struct platform_device *drm;
391 struct mtk_mmsys *mmsys;
392 int ret;
393
394 mmsys = devm_kzalloc(dev, size: sizeof(*mmsys), GFP_KERNEL);
395 if (!mmsys)
396 return -ENOMEM;
397
398 mmsys->regs = devm_platform_ioremap_resource(pdev, index: 0);
399 if (IS_ERR(ptr: mmsys->regs)) {
400 ret = PTR_ERR(ptr: mmsys->regs);
401 dev_err(dev, "Failed to ioremap mmsys registers: %d\n", ret);
402 return ret;
403 }
404
405 mmsys->data = of_device_get_match_data(dev: &pdev->dev);
406
407 if (mmsys->data->num_resets > 0) {
408 spin_lock_init(&mmsys->lock);
409
410 mmsys->rcdev.owner = THIS_MODULE;
411 mmsys->rcdev.nr_resets = mmsys->data->num_resets;
412 mmsys->rcdev.ops = &mtk_mmsys_reset_ops;
413 mmsys->rcdev.of_node = pdev->dev.of_node;
414 ret = devm_reset_controller_register(dev: &pdev->dev, rcdev: &mmsys->rcdev);
415 if (ret) {
416 dev_err(&pdev->dev, "Couldn't register mmsys reset controller: %d\n", ret);
417 return ret;
418 }
419 }
420
421 /* CMDQ is optional */
422 ret = cmdq_dev_get_client_reg(dev, client_reg: &mmsys->cmdq_base, idx: 0);
423 if (ret)
424 dev_dbg(dev, "No mediatek,gce-client-reg!\n");
425
426 platform_set_drvdata(pdev, data: mmsys);
427
428 clks = platform_device_register_data(parent: &pdev->dev, name: mmsys->data->clk_driver,
429 PLATFORM_DEVID_AUTO, NULL, size: 0);
430 if (IS_ERR(ptr: clks))
431 return PTR_ERR(ptr: clks);
432 mmsys->clks_pdev = clks;
433
434 if (mmsys->data->is_vppsys)
435 goto out_probe_done;
436
437 drm = platform_device_register_data(parent: &pdev->dev, name: "mediatek-drm",
438 PLATFORM_DEVID_AUTO, NULL, size: 0);
439 if (IS_ERR(ptr: drm)) {
440 platform_device_unregister(clks);
441 return PTR_ERR(ptr: drm);
442 }
443 mmsys->drm_pdev = drm;
444
445out_probe_done:
446 return 0;
447}
448
449static void mtk_mmsys_remove(struct platform_device *pdev)
450{
451 struct mtk_mmsys *mmsys = platform_get_drvdata(pdev);
452
453 platform_device_unregister(mmsys->drm_pdev);
454 platform_device_unregister(mmsys->clks_pdev);
455}
456
457static const struct of_device_id of_match_mtk_mmsys[] = {
458 { .compatible = "mediatek,mt2701-mmsys", .data = &mt2701_mmsys_driver_data },
459 { .compatible = "mediatek,mt2712-mmsys", .data = &mt2712_mmsys_driver_data },
460 { .compatible = "mediatek,mt6779-mmsys", .data = &mt6779_mmsys_driver_data },
461 { .compatible = "mediatek,mt6795-mmsys", .data = &mt6795_mmsys_driver_data },
462 { .compatible = "mediatek,mt6797-mmsys", .data = &mt6797_mmsys_driver_data },
463 { .compatible = "mediatek,mt8167-mmsys", .data = &mt8167_mmsys_driver_data },
464 { .compatible = "mediatek,mt8173-mmsys", .data = &mt8173_mmsys_driver_data },
465 { .compatible = "mediatek,mt8183-mmsys", .data = &mt8183_mmsys_driver_data },
466 { .compatible = "mediatek,mt8186-mmsys", .data = &mt8186_mmsys_driver_data },
467 { .compatible = "mediatek,mt8188-vdosys0", .data = &mt8188_vdosys0_driver_data },
468 { .compatible = "mediatek,mt8188-vdosys1", .data = &mt8188_vdosys1_driver_data },
469 { .compatible = "mediatek,mt8188-vppsys0", .data = &mt8188_vppsys0_driver_data },
470 { .compatible = "mediatek,mt8188-vppsys1", .data = &mt8188_vppsys1_driver_data },
471 { .compatible = "mediatek,mt8192-mmsys", .data = &mt8192_mmsys_driver_data },
472 /* "mediatek,mt8195-mmsys" compatible is deprecated */
473 { .compatible = "mediatek,mt8195-mmsys", .data = &mt8195_vdosys0_driver_data },
474 { .compatible = "mediatek,mt8195-vdosys0", .data = &mt8195_vdosys0_driver_data },
475 { .compatible = "mediatek,mt8195-vdosys1", .data = &mt8195_vdosys1_driver_data },
476 { .compatible = "mediatek,mt8195-vppsys0", .data = &mt8195_vppsys0_driver_data },
477 { .compatible = "mediatek,mt8195-vppsys1", .data = &mt8195_vppsys1_driver_data },
478 { .compatible = "mediatek,mt8365-mmsys", .data = &mt8365_mmsys_driver_data },
479 { /* sentinel */ }
480};
481MODULE_DEVICE_TABLE(of, of_match_mtk_mmsys);
482
483static struct platform_driver mtk_mmsys_drv = {
484 .driver = {
485 .name = "mtk-mmsys",
486 .of_match_table = of_match_mtk_mmsys,
487 },
488 .probe = mtk_mmsys_probe,
489 .remove_new = mtk_mmsys_remove,
490};
491module_platform_driver(mtk_mmsys_drv);
492
493MODULE_AUTHOR("Yongqiang Niu <yongqiang.niu@mediatek.com>");
494MODULE_DESCRIPTION("MediaTek SoC MMSYS driver");
495MODULE_LICENSE("GPL");
496

source code of linux/drivers/soc/mediatek/mtk-mmsys.c