1 // SPDX-License-Identifier: GPL-2.0-only
2 /*
3 * Copyright (c) 2015 Pengutronix, Sascha Hauer <kernel@pengutronix.de>
4 */
5 #include <linux/clk.h>
6 #include <linux/init.h>
7 #include <linux/io.h>
8 #include <linux/iopoll.h>
9 #include <linux/mfd/syscon.h>
10 #include <linux/of_device.h>
11 #include <linux/platform_device.h>
12 #include <linux/pm_domain.h>
13 #include <linux/regulator/consumer.h>
14 #include <linux/soc/mediatek/infracfg.h>
15
16 #include <dt-bindings/power/mt2701-power.h>
17 #include <dt-bindings/power/mt2712-power.h>
18 #include <dt-bindings/power/mt6797-power.h>
19 #include <dt-bindings/power/mt7622-power.h>
20 #include <dt-bindings/power/mt7623a-power.h>
21 #include <dt-bindings/power/mt8173-power.h>
22
23 #define MTK_POLL_DELAY_US 10
24 #define MTK_POLL_TIMEOUT USEC_PER_SEC
25
26 #define MTK_SCPD_ACTIVE_WAKEUP BIT(0)
27 #define MTK_SCPD_FWAIT_SRAM BIT(1)
28 #define MTK_SCPD_CAPS(_scpd, _x) ((_scpd)->data->caps & (_x))
29
30 #define SPM_VDE_PWR_CON 0x0210
31 #define SPM_MFG_PWR_CON 0x0214
32 #define SPM_VEN_PWR_CON 0x0230
33 #define SPM_ISP_PWR_CON 0x0238
34 #define SPM_DIS_PWR_CON 0x023c
35 #define SPM_CONN_PWR_CON 0x0280
36 #define SPM_VEN2_PWR_CON 0x0298
37 #define SPM_AUDIO_PWR_CON 0x029c /* MT8173, MT2712 */
38 #define SPM_BDP_PWR_CON 0x029c /* MT2701 */
39 #define SPM_ETH_PWR_CON 0x02a0
40 #define SPM_HIF_PWR_CON 0x02a4
41 #define SPM_IFR_MSC_PWR_CON 0x02a8
42 #define SPM_MFG_2D_PWR_CON 0x02c0
43 #define SPM_MFG_ASYNC_PWR_CON 0x02c4
44 #define SPM_USB_PWR_CON 0x02cc
45 #define SPM_USB2_PWR_CON 0x02d4 /* MT2712 */
46 #define SPM_ETHSYS_PWR_CON 0x02e0 /* MT7622 */
47 #define SPM_HIF0_PWR_CON 0x02e4 /* MT7622 */
48 #define SPM_HIF1_PWR_CON 0x02e8 /* MT7622 */
49 #define SPM_WB_PWR_CON 0x02ec /* MT7622 */
50
51 #define SPM_PWR_STATUS 0x060c
52 #define SPM_PWR_STATUS_2ND 0x0610
53
54 #define PWR_RST_B_BIT BIT(0)
55 #define PWR_ISO_BIT BIT(1)
56 #define PWR_ON_BIT BIT(2)
57 #define PWR_ON_2ND_BIT BIT(3)
58 #define PWR_CLK_DIS_BIT BIT(4)
59
60 #define PWR_STATUS_CONN BIT(1)
61 #define PWR_STATUS_DISP BIT(3)
62 #define PWR_STATUS_MFG BIT(4)
63 #define PWR_STATUS_ISP BIT(5)
64 #define PWR_STATUS_VDEC BIT(7)
65 #define PWR_STATUS_BDP BIT(14)
66 #define PWR_STATUS_ETH BIT(15)
67 #define PWR_STATUS_HIF BIT(16)
68 #define PWR_STATUS_IFR_MSC BIT(17)
69 #define PWR_STATUS_USB2 BIT(19) /* MT2712 */
70 #define PWR_STATUS_VENC_LT BIT(20)
71 #define PWR_STATUS_VENC BIT(21)
72 #define PWR_STATUS_MFG_2D BIT(22) /* MT8173 */
73 #define PWR_STATUS_MFG_ASYNC BIT(23) /* MT8173 */
74 #define PWR_STATUS_AUDIO BIT(24) /* MT8173, MT2712 */
75 #define PWR_STATUS_USB BIT(25) /* MT8173, MT2712 */
76 #define PWR_STATUS_ETHSYS BIT(24) /* MT7622 */
77 #define PWR_STATUS_HIF0 BIT(25) /* MT7622 */
78 #define PWR_STATUS_HIF1 BIT(26) /* MT7622 */
79 #define PWR_STATUS_WB BIT(27) /* MT7622 */
80
81 enum clk_id {
82 CLK_NONE,
83 CLK_MM,
84 CLK_MFG,
85 CLK_VENC,
86 CLK_VENC_LT,
87 CLK_ETHIF,
88 CLK_VDEC,
89 CLK_HIFSEL,
90 CLK_JPGDEC,
91 CLK_AUDIO,
92 CLK_MAX,
93 };
94
95 static const char * const clk_names[] = {
96 NULL,
97 "mm",
98 "mfg",
99 "venc",
100 "venc_lt",
101 "ethif",
102 "vdec",
103 "hif_sel",
104 "jpgdec",
105 "audio",
106 NULL,
107 };
108
109 #define MAX_CLKS 3
110
111 /**
112 * struct scp_domain_data - scp domain data for power on/off flow
113 * @name: The domain name.
114 * @sta_mask: The mask for power on/off status bit.
115 * @ctl_offs: The offset for main power control register.
116 * @sram_pdn_bits: The mask for sram power control bits.
117 * @sram_pdn_ack_bits: The mask for sram power control acked bits.
118 * @bus_prot_mask: The mask for single step bus protection.
119 * @clk_id: The basic clocks required by this power domain.
120 * @caps: The flag for active wake-up action.
121 */
122 struct scp_domain_data {
123 const char *name;
124 u32 sta_mask;
125 int ctl_offs;
126 u32 sram_pdn_bits;
127 u32 sram_pdn_ack_bits;
128 u32 bus_prot_mask;
129 enum clk_id clk_id[MAX_CLKS];
130 u8 caps;
131 };
132
133 struct scp;
134
135 struct scp_domain {
136 struct generic_pm_domain genpd;
137 struct scp *scp;
138 struct clk *clk[MAX_CLKS];
139 const struct scp_domain_data *data;
140 struct regulator *supply;
141 };
142
143 struct scp_ctrl_reg {
144 int pwr_sta_offs;
145 int pwr_sta2nd_offs;
146 };
147
148 struct scp {
149 struct scp_domain *domains;
150 struct genpd_onecell_data pd_data;
151 struct device *dev;
152 void __iomem *base;
153 struct regmap *infracfg;
154 struct scp_ctrl_reg ctrl_reg;
155 bool bus_prot_reg_update;
156 };
157
158 struct scp_subdomain {
159 int origin;
160 int subdomain;
161 };
162
163 struct scp_soc_data {
164 const struct scp_domain_data *domains;
165 int num_domains;
166 const struct scp_subdomain *subdomains;
167 int num_subdomains;
168 const struct scp_ctrl_reg regs;
169 bool bus_prot_reg_update;
170 };
171
scpsys_domain_is_on(struct scp_domain * scpd)172 static int scpsys_domain_is_on(struct scp_domain *scpd)
173 {
174 struct scp *scp = scpd->scp;
175
176 u32 status = readl(scp->base + scp->ctrl_reg.pwr_sta_offs) &
177 scpd->data->sta_mask;
178 u32 status2 = readl(scp->base + scp->ctrl_reg.pwr_sta2nd_offs) &
179 scpd->data->sta_mask;
180
181 /*
182 * A domain is on when both status bits are set. If only one is set
183 * return an error. This happens while powering up a domain
184 */
185
186 if (status && status2)
187 return true;
188 if (!status && !status2)
189 return false;
190
191 return -EINVAL;
192 }
193
scpsys_regulator_enable(struct scp_domain * scpd)194 static int scpsys_regulator_enable(struct scp_domain *scpd)
195 {
196 if (!scpd->supply)
197 return 0;
198
199 return regulator_enable(scpd->supply);
200 }
201
scpsys_regulator_disable(struct scp_domain * scpd)202 static int scpsys_regulator_disable(struct scp_domain *scpd)
203 {
204 if (!scpd->supply)
205 return 0;
206
207 return regulator_disable(scpd->supply);
208 }
209
scpsys_clk_disable(struct clk * clk[],int max_num)210 static void scpsys_clk_disable(struct clk *clk[], int max_num)
211 {
212 int i;
213
214 for (i = max_num - 1; i >= 0; i--)
215 clk_disable_unprepare(clk[i]);
216 }
217
scpsys_clk_enable(struct clk * clk[],int max_num)218 static int scpsys_clk_enable(struct clk *clk[], int max_num)
219 {
220 int i, ret = 0;
221
222 for (i = 0; i < max_num && clk[i]; i++) {
223 ret = clk_prepare_enable(clk[i]);
224 if (ret) {
225 scpsys_clk_disable(clk, i);
226 break;
227 }
228 }
229
230 return ret;
231 }
232
scpsys_sram_enable(struct scp_domain * scpd,void __iomem * ctl_addr)233 static int scpsys_sram_enable(struct scp_domain *scpd, void __iomem *ctl_addr)
234 {
235 u32 val;
236 u32 pdn_ack = scpd->data->sram_pdn_ack_bits;
237 int tmp;
238
239 val = readl(ctl_addr);
240 val &= ~scpd->data->sram_pdn_bits;
241 writel(val, ctl_addr);
242
243 /* Either wait until SRAM_PDN_ACK all 0 or have a force wait */
244 if (MTK_SCPD_CAPS(scpd, MTK_SCPD_FWAIT_SRAM)) {
245 /*
246 * Currently, MTK_SCPD_FWAIT_SRAM is necessary only for
247 * MT7622_POWER_DOMAIN_WB and thus just a trivial setup
248 * is applied here.
249 */
250 usleep_range(12000, 12100);
251 } else {
252 /* Either wait until SRAM_PDN_ACK all 1 or 0 */
253 int ret = readl_poll_timeout(ctl_addr, tmp,
254 (tmp & pdn_ack) == 0,
255 MTK_POLL_DELAY_US, MTK_POLL_TIMEOUT);
256 if (ret < 0)
257 return ret;
258 }
259
260 return 0;
261 }
262
scpsys_sram_disable(struct scp_domain * scpd,void __iomem * ctl_addr)263 static int scpsys_sram_disable(struct scp_domain *scpd, void __iomem *ctl_addr)
264 {
265 u32 val;
266 u32 pdn_ack = scpd->data->sram_pdn_ack_bits;
267 int tmp;
268
269 val = readl(ctl_addr);
270 val |= scpd->data->sram_pdn_bits;
271 writel(val, ctl_addr);
272
273 /* Either wait until SRAM_PDN_ACK all 1 or 0 */
274 return readl_poll_timeout(ctl_addr, tmp,
275 (tmp & pdn_ack) == pdn_ack,
276 MTK_POLL_DELAY_US, MTK_POLL_TIMEOUT);
277 }
278
scpsys_bus_protect_enable(struct scp_domain * scpd)279 static int scpsys_bus_protect_enable(struct scp_domain *scpd)
280 {
281 struct scp *scp = scpd->scp;
282
283 if (!scpd->data->bus_prot_mask)
284 return 0;
285
286 return mtk_infracfg_set_bus_protection(scp->infracfg,
287 scpd->data->bus_prot_mask,
288 scp->bus_prot_reg_update);
289 }
290
scpsys_bus_protect_disable(struct scp_domain * scpd)291 static int scpsys_bus_protect_disable(struct scp_domain *scpd)
292 {
293 struct scp *scp = scpd->scp;
294
295 if (!scpd->data->bus_prot_mask)
296 return 0;
297
298 return mtk_infracfg_clear_bus_protection(scp->infracfg,
299 scpd->data->bus_prot_mask,
300 scp->bus_prot_reg_update);
301 }
302
scpsys_power_on(struct generic_pm_domain * genpd)303 static int scpsys_power_on(struct generic_pm_domain *genpd)
304 {
305 struct scp_domain *scpd = container_of(genpd, struct scp_domain, genpd);
306 struct scp *scp = scpd->scp;
307 void __iomem *ctl_addr = scp->base + scpd->data->ctl_offs;
308 u32 val;
309 int ret, tmp;
310
311 ret = scpsys_regulator_enable(scpd);
312 if (ret < 0)
313 return ret;
314
315 ret = scpsys_clk_enable(scpd->clk, MAX_CLKS);
316 if (ret)
317 goto err_clk;
318
319 /* subsys power on */
320 val = readl(ctl_addr);
321 val |= PWR_ON_BIT;
322 writel(val, ctl_addr);
323 val |= PWR_ON_2ND_BIT;
324 writel(val, ctl_addr);
325
326 /* wait until PWR_ACK = 1 */
327 ret = readx_poll_timeout(scpsys_domain_is_on, scpd, tmp, tmp > 0,
328 MTK_POLL_DELAY_US, MTK_POLL_TIMEOUT);
329 if (ret < 0)
330 goto err_pwr_ack;
331
332 val &= ~PWR_CLK_DIS_BIT;
333 writel(val, ctl_addr);
334
335 val &= ~PWR_ISO_BIT;
336 writel(val, ctl_addr);
337
338 val |= PWR_RST_B_BIT;
339 writel(val, ctl_addr);
340
341 ret = scpsys_sram_enable(scpd, ctl_addr);
342 if (ret < 0)
343 goto err_pwr_ack;
344
345 ret = scpsys_bus_protect_disable(scpd);
346 if (ret < 0)
347 goto err_pwr_ack;
348
349 return 0;
350
351 err_pwr_ack:
352 scpsys_clk_disable(scpd->clk, MAX_CLKS);
353 err_clk:
354 scpsys_regulator_disable(scpd);
355
356 dev_err(scp->dev, "Failed to power on domain %s\n", genpd->name);
357
358 return ret;
359 }
360
scpsys_power_off(struct generic_pm_domain * genpd)361 static int scpsys_power_off(struct generic_pm_domain *genpd)
362 {
363 struct scp_domain *scpd = container_of(genpd, struct scp_domain, genpd);
364 struct scp *scp = scpd->scp;
365 void __iomem *ctl_addr = scp->base + scpd->data->ctl_offs;
366 u32 val;
367 int ret, tmp;
368
369 ret = scpsys_bus_protect_enable(scpd);
370 if (ret < 0)
371 goto out;
372
373 ret = scpsys_sram_disable(scpd, ctl_addr);
374 if (ret < 0)
375 goto out;
376
377 /* subsys power off */
378 val = readl(ctl_addr);
379 val |= PWR_ISO_BIT;
380 writel(val, ctl_addr);
381
382 val &= ~PWR_RST_B_BIT;
383 writel(val, ctl_addr);
384
385 val |= PWR_CLK_DIS_BIT;
386 writel(val, ctl_addr);
387
388 val &= ~PWR_ON_BIT;
389 writel(val, ctl_addr);
390
391 val &= ~PWR_ON_2ND_BIT;
392 writel(val, ctl_addr);
393
394 /* wait until PWR_ACK = 0 */
395 ret = readx_poll_timeout(scpsys_domain_is_on, scpd, tmp, tmp == 0,
396 MTK_POLL_DELAY_US, MTK_POLL_TIMEOUT);
397 if (ret < 0)
398 goto out;
399
400 scpsys_clk_disable(scpd->clk, MAX_CLKS);
401
402 ret = scpsys_regulator_disable(scpd);
403 if (ret < 0)
404 goto out;
405
406 return 0;
407
408 out:
409 dev_err(scp->dev, "Failed to power off domain %s\n", genpd->name);
410
411 return ret;
412 }
413
init_clks(struct platform_device * pdev,struct clk ** clk)414 static void init_clks(struct platform_device *pdev, struct clk **clk)
415 {
416 int i;
417
418 for (i = CLK_NONE + 1; i < CLK_MAX; i++)
419 clk[i] = devm_clk_get(&pdev->dev, clk_names[i]);
420 }
421
init_scp(struct platform_device * pdev,const struct scp_domain_data * scp_domain_data,int num,const struct scp_ctrl_reg * scp_ctrl_reg,bool bus_prot_reg_update)422 static struct scp *init_scp(struct platform_device *pdev,
423 const struct scp_domain_data *scp_domain_data, int num,
424 const struct scp_ctrl_reg *scp_ctrl_reg,
425 bool bus_prot_reg_update)
426 {
427 struct genpd_onecell_data *pd_data;
428 struct resource *res;
429 int i, j;
430 struct scp *scp;
431 struct clk *clk[CLK_MAX];
432
433 scp = devm_kzalloc(&pdev->dev, sizeof(*scp), GFP_KERNEL);
434 if (!scp)
435 return ERR_PTR(-ENOMEM);
436
437 scp->ctrl_reg.pwr_sta_offs = scp_ctrl_reg->pwr_sta_offs;
438 scp->ctrl_reg.pwr_sta2nd_offs = scp_ctrl_reg->pwr_sta2nd_offs;
439
440 scp->bus_prot_reg_update = bus_prot_reg_update;
441
442 scp->dev = &pdev->dev;
443
444 res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
445 scp->base = devm_ioremap_resource(&pdev->dev, res);
446 if (IS_ERR(scp->base))
447 return ERR_CAST(scp->base);
448
449 scp->domains = devm_kcalloc(&pdev->dev,
450 num, sizeof(*scp->domains), GFP_KERNEL);
451 if (!scp->domains)
452 return ERR_PTR(-ENOMEM);
453
454 pd_data = &scp->pd_data;
455
456 pd_data->domains = devm_kcalloc(&pdev->dev,
457 num, sizeof(*pd_data->domains), GFP_KERNEL);
458 if (!pd_data->domains)
459 return ERR_PTR(-ENOMEM);
460
461 scp->infracfg = syscon_regmap_lookup_by_phandle(pdev->dev.of_node,
462 "infracfg");
463 if (IS_ERR(scp->infracfg)) {
464 dev_err(&pdev->dev, "Cannot find infracfg controller: %ld\n",
465 PTR_ERR(scp->infracfg));
466 return ERR_CAST(scp->infracfg);
467 }
468
469 for (i = 0; i < num; i++) {
470 struct scp_domain *scpd = &scp->domains[i];
471 const struct scp_domain_data *data = &scp_domain_data[i];
472
473 scpd->supply = devm_regulator_get_optional(&pdev->dev, data->name);
474 if (IS_ERR(scpd->supply)) {
475 if (PTR_ERR(scpd->supply) == -ENODEV)
476 scpd->supply = NULL;
477 else
478 return ERR_CAST(scpd->supply);
479 }
480 }
481
482 pd_data->num_domains = num;
483
484 init_clks(pdev, clk);
485
486 for (i = 0; i < num; i++) {
487 struct scp_domain *scpd = &scp->domains[i];
488 struct generic_pm_domain *genpd = &scpd->genpd;
489 const struct scp_domain_data *data = &scp_domain_data[i];
490
491 pd_data->domains[i] = genpd;
492 scpd->scp = scp;
493
494 scpd->data = data;
495
496 for (j = 0; j < MAX_CLKS && data->clk_id[j]; j++) {
497 struct clk *c = clk[data->clk_id[j]];
498
499 if (IS_ERR(c)) {
500 dev_err(&pdev->dev, "%s: clk unavailable\n",
501 data->name);
502 return ERR_CAST(c);
503 }
504
505 scpd->clk[j] = c;
506 }
507
508 genpd->name = data->name;
509 genpd->power_off = scpsys_power_off;
510 genpd->power_on = scpsys_power_on;
511 if (MTK_SCPD_CAPS(scpd, MTK_SCPD_ACTIVE_WAKEUP))
512 genpd->flags |= GENPD_FLAG_ACTIVE_WAKEUP;
513 }
514
515 return scp;
516 }
517
mtk_register_power_domains(struct platform_device * pdev,struct scp * scp,int num)518 static void mtk_register_power_domains(struct platform_device *pdev,
519 struct scp *scp, int num)
520 {
521 struct genpd_onecell_data *pd_data;
522 int i, ret;
523
524 for (i = 0; i < num; i++) {
525 struct scp_domain *scpd = &scp->domains[i];
526 struct generic_pm_domain *genpd = &scpd->genpd;
527 bool on;
528
529 /*
530 * Initially turn on all domains to make the domains usable
531 * with !CONFIG_PM and to get the hardware in sync with the
532 * software. The unused domains will be switched off during
533 * late_init time.
534 */
535 on = !WARN_ON(genpd->power_on(genpd) < 0);
536
537 pm_genpd_init(genpd, NULL, !on);
538 }
539
540 /*
541 * We are not allowed to fail here since there is no way to unregister
542 * a power domain. Once registered above we have to keep the domains
543 * valid.
544 */
545
546 pd_data = &scp->pd_data;
547
548 ret = of_genpd_add_provider_onecell(pdev->dev.of_node, pd_data);
549 if (ret)
550 dev_err(&pdev->dev, "Failed to add OF provider: %d\n", ret);
551 }
552
553 /*
554 * MT2701 power domain support
555 */
556
557 static const struct scp_domain_data scp_domain_data_mt2701[] = {
558 [MT2701_POWER_DOMAIN_CONN] = {
559 .name = "conn",
560 .sta_mask = PWR_STATUS_CONN,
561 .ctl_offs = SPM_CONN_PWR_CON,
562 .bus_prot_mask = MT2701_TOP_AXI_PROT_EN_CONN_M |
563 MT2701_TOP_AXI_PROT_EN_CONN_S,
564 .clk_id = {CLK_NONE},
565 .caps = MTK_SCPD_ACTIVE_WAKEUP,
566 },
567 [MT2701_POWER_DOMAIN_DISP] = {
568 .name = "disp",
569 .sta_mask = PWR_STATUS_DISP,
570 .ctl_offs = SPM_DIS_PWR_CON,
571 .sram_pdn_bits = GENMASK(11, 8),
572 .clk_id = {CLK_MM},
573 .bus_prot_mask = MT2701_TOP_AXI_PROT_EN_MM_M0,
574 .caps = MTK_SCPD_ACTIVE_WAKEUP,
575 },
576 [MT2701_POWER_DOMAIN_MFG] = {
577 .name = "mfg",
578 .sta_mask = PWR_STATUS_MFG,
579 .ctl_offs = SPM_MFG_PWR_CON,
580 .sram_pdn_bits = GENMASK(11, 8),
581 .sram_pdn_ack_bits = GENMASK(12, 12),
582 .clk_id = {CLK_MFG},
583 .caps = MTK_SCPD_ACTIVE_WAKEUP,
584 },
585 [MT2701_POWER_DOMAIN_VDEC] = {
586 .name = "vdec",
587 .sta_mask = PWR_STATUS_VDEC,
588 .ctl_offs = SPM_VDE_PWR_CON,
589 .sram_pdn_bits = GENMASK(11, 8),
590 .sram_pdn_ack_bits = GENMASK(12, 12),
591 .clk_id = {CLK_MM},
592 .caps = MTK_SCPD_ACTIVE_WAKEUP,
593 },
594 [MT2701_POWER_DOMAIN_ISP] = {
595 .name = "isp",
596 .sta_mask = PWR_STATUS_ISP,
597 .ctl_offs = SPM_ISP_PWR_CON,
598 .sram_pdn_bits = GENMASK(11, 8),
599 .sram_pdn_ack_bits = GENMASK(13, 12),
600 .clk_id = {CLK_MM},
601 .caps = MTK_SCPD_ACTIVE_WAKEUP,
602 },
603 [MT2701_POWER_DOMAIN_BDP] = {
604 .name = "bdp",
605 .sta_mask = PWR_STATUS_BDP,
606 .ctl_offs = SPM_BDP_PWR_CON,
607 .sram_pdn_bits = GENMASK(11, 8),
608 .clk_id = {CLK_NONE},
609 .caps = MTK_SCPD_ACTIVE_WAKEUP,
610 },
611 [MT2701_POWER_DOMAIN_ETH] = {
612 .name = "eth",
613 .sta_mask = PWR_STATUS_ETH,
614 .ctl_offs = SPM_ETH_PWR_CON,
615 .sram_pdn_bits = GENMASK(11, 8),
616 .sram_pdn_ack_bits = GENMASK(15, 12),
617 .clk_id = {CLK_ETHIF},
618 .caps = MTK_SCPD_ACTIVE_WAKEUP,
619 },
620 [MT2701_POWER_DOMAIN_HIF] = {
621 .name = "hif",
622 .sta_mask = PWR_STATUS_HIF,
623 .ctl_offs = SPM_HIF_PWR_CON,
624 .sram_pdn_bits = GENMASK(11, 8),
625 .sram_pdn_ack_bits = GENMASK(15, 12),
626 .clk_id = {CLK_ETHIF},
627 .caps = MTK_SCPD_ACTIVE_WAKEUP,
628 },
629 [MT2701_POWER_DOMAIN_IFR_MSC] = {
630 .name = "ifr_msc",
631 .sta_mask = PWR_STATUS_IFR_MSC,
632 .ctl_offs = SPM_IFR_MSC_PWR_CON,
633 .clk_id = {CLK_NONE},
634 .caps = MTK_SCPD_ACTIVE_WAKEUP,
635 },
636 };
637
638 /*
639 * MT2712 power domain support
640 */
641 static const struct scp_domain_data scp_domain_data_mt2712[] = {
642 [MT2712_POWER_DOMAIN_MM] = {
643 .name = "mm",
644 .sta_mask = PWR_STATUS_DISP,
645 .ctl_offs = SPM_DIS_PWR_CON,
646 .sram_pdn_bits = GENMASK(8, 8),
647 .sram_pdn_ack_bits = GENMASK(12, 12),
648 .clk_id = {CLK_MM},
649 .caps = MTK_SCPD_ACTIVE_WAKEUP,
650 },
651 [MT2712_POWER_DOMAIN_VDEC] = {
652 .name = "vdec",
653 .sta_mask = PWR_STATUS_VDEC,
654 .ctl_offs = SPM_VDE_PWR_CON,
655 .sram_pdn_bits = GENMASK(8, 8),
656 .sram_pdn_ack_bits = GENMASK(12, 12),
657 .clk_id = {CLK_MM, CLK_VDEC},
658 .caps = MTK_SCPD_ACTIVE_WAKEUP,
659 },
660 [MT2712_POWER_DOMAIN_VENC] = {
661 .name = "venc",
662 .sta_mask = PWR_STATUS_VENC,
663 .ctl_offs = SPM_VEN_PWR_CON,
664 .sram_pdn_bits = GENMASK(11, 8),
665 .sram_pdn_ack_bits = GENMASK(15, 12),
666 .clk_id = {CLK_MM, CLK_VENC, CLK_JPGDEC},
667 .caps = MTK_SCPD_ACTIVE_WAKEUP,
668 },
669 [MT2712_POWER_DOMAIN_ISP] = {
670 .name = "isp",
671 .sta_mask = PWR_STATUS_ISP,
672 .ctl_offs = SPM_ISP_PWR_CON,
673 .sram_pdn_bits = GENMASK(11, 8),
674 .sram_pdn_ack_bits = GENMASK(13, 12),
675 .clk_id = {CLK_MM},
676 .caps = MTK_SCPD_ACTIVE_WAKEUP,
677 },
678 [MT2712_POWER_DOMAIN_AUDIO] = {
679 .name = "audio",
680 .sta_mask = PWR_STATUS_AUDIO,
681 .ctl_offs = SPM_AUDIO_PWR_CON,
682 .sram_pdn_bits = GENMASK(11, 8),
683 .sram_pdn_ack_bits = GENMASK(15, 12),
684 .clk_id = {CLK_AUDIO},
685 .caps = MTK_SCPD_ACTIVE_WAKEUP,
686 },
687 [MT2712_POWER_DOMAIN_USB] = {
688 .name = "usb",
689 .sta_mask = PWR_STATUS_USB,
690 .ctl_offs = SPM_USB_PWR_CON,
691 .sram_pdn_bits = GENMASK(10, 8),
692 .sram_pdn_ack_bits = GENMASK(14, 12),
693 .clk_id = {CLK_NONE},
694 .caps = MTK_SCPD_ACTIVE_WAKEUP,
695 },
696 [MT2712_POWER_DOMAIN_USB2] = {
697 .name = "usb2",
698 .sta_mask = PWR_STATUS_USB2,
699 .ctl_offs = SPM_USB2_PWR_CON,
700 .sram_pdn_bits = GENMASK(10, 8),
701 .sram_pdn_ack_bits = GENMASK(14, 12),
702 .clk_id = {CLK_NONE},
703 .caps = MTK_SCPD_ACTIVE_WAKEUP,
704 },
705 [MT2712_POWER_DOMAIN_MFG] = {
706 .name = "mfg",
707 .sta_mask = PWR_STATUS_MFG,
708 .ctl_offs = SPM_MFG_PWR_CON,
709 .sram_pdn_bits = GENMASK(8, 8),
710 .sram_pdn_ack_bits = GENMASK(16, 16),
711 .clk_id = {CLK_MFG},
712 .bus_prot_mask = BIT(14) | BIT(21) | BIT(23),
713 .caps = MTK_SCPD_ACTIVE_WAKEUP,
714 },
715 [MT2712_POWER_DOMAIN_MFG_SC1] = {
716 .name = "mfg_sc1",
717 .sta_mask = BIT(22),
718 .ctl_offs = 0x02c0,
719 .sram_pdn_bits = GENMASK(8, 8),
720 .sram_pdn_ack_bits = GENMASK(16, 16),
721 .clk_id = {CLK_NONE},
722 .caps = MTK_SCPD_ACTIVE_WAKEUP,
723 },
724 [MT2712_POWER_DOMAIN_MFG_SC2] = {
725 .name = "mfg_sc2",
726 .sta_mask = BIT(23),
727 .ctl_offs = 0x02c4,
728 .sram_pdn_bits = GENMASK(8, 8),
729 .sram_pdn_ack_bits = GENMASK(16, 16),
730 .clk_id = {CLK_NONE},
731 .caps = MTK_SCPD_ACTIVE_WAKEUP,
732 },
733 [MT2712_POWER_DOMAIN_MFG_SC3] = {
734 .name = "mfg_sc3",
735 .sta_mask = BIT(30),
736 .ctl_offs = 0x01f8,
737 .sram_pdn_bits = GENMASK(8, 8),
738 .sram_pdn_ack_bits = GENMASK(16, 16),
739 .clk_id = {CLK_NONE},
740 .caps = MTK_SCPD_ACTIVE_WAKEUP,
741 },
742 };
743
744 static const struct scp_subdomain scp_subdomain_mt2712[] = {
745 {MT2712_POWER_DOMAIN_MM, MT2712_POWER_DOMAIN_VDEC},
746 {MT2712_POWER_DOMAIN_MM, MT2712_POWER_DOMAIN_VENC},
747 {MT2712_POWER_DOMAIN_MM, MT2712_POWER_DOMAIN_ISP},
748 {MT2712_POWER_DOMAIN_MFG, MT2712_POWER_DOMAIN_MFG_SC1},
749 {MT2712_POWER_DOMAIN_MFG_SC1, MT2712_POWER_DOMAIN_MFG_SC2},
750 {MT2712_POWER_DOMAIN_MFG_SC2, MT2712_POWER_DOMAIN_MFG_SC3},
751 };
752
753 /*
754 * MT6797 power domain support
755 */
756
757 static const struct scp_domain_data scp_domain_data_mt6797[] = {
758 [MT6797_POWER_DOMAIN_VDEC] = {
759 .name = "vdec",
760 .sta_mask = BIT(7),
761 .ctl_offs = 0x300,
762 .sram_pdn_bits = GENMASK(8, 8),
763 .sram_pdn_ack_bits = GENMASK(12, 12),
764 .clk_id = {CLK_VDEC},
765 },
766 [MT6797_POWER_DOMAIN_VENC] = {
767 .name = "venc",
768 .sta_mask = BIT(21),
769 .ctl_offs = 0x304,
770 .sram_pdn_bits = GENMASK(11, 8),
771 .sram_pdn_ack_bits = GENMASK(15, 12),
772 .clk_id = {CLK_NONE},
773 },
774 [MT6797_POWER_DOMAIN_ISP] = {
775 .name = "isp",
776 .sta_mask = BIT(5),
777 .ctl_offs = 0x308,
778 .sram_pdn_bits = GENMASK(9, 8),
779 .sram_pdn_ack_bits = GENMASK(13, 12),
780 .clk_id = {CLK_NONE},
781 },
782 [MT6797_POWER_DOMAIN_MM] = {
783 .name = "mm",
784 .sta_mask = BIT(3),
785 .ctl_offs = 0x30C,
786 .sram_pdn_bits = GENMASK(8, 8),
787 .sram_pdn_ack_bits = GENMASK(12, 12),
788 .clk_id = {CLK_MM},
789 .bus_prot_mask = (BIT(1) | BIT(2)),
790 },
791 [MT6797_POWER_DOMAIN_AUDIO] = {
792 .name = "audio",
793 .sta_mask = BIT(24),
794 .ctl_offs = 0x314,
795 .sram_pdn_bits = GENMASK(11, 8),
796 .sram_pdn_ack_bits = GENMASK(15, 12),
797 .clk_id = {CLK_NONE},
798 },
799 [MT6797_POWER_DOMAIN_MFG_ASYNC] = {
800 .name = "mfg_async",
801 .sta_mask = BIT(13),
802 .ctl_offs = 0x334,
803 .sram_pdn_bits = 0,
804 .sram_pdn_ack_bits = 0,
805 .clk_id = {CLK_MFG},
806 },
807 [MT6797_POWER_DOMAIN_MJC] = {
808 .name = "mjc",
809 .sta_mask = BIT(20),
810 .ctl_offs = 0x310,
811 .sram_pdn_bits = GENMASK(8, 8),
812 .sram_pdn_ack_bits = GENMASK(12, 12),
813 .clk_id = {CLK_NONE},
814 },
815 };
816
817 #define SPM_PWR_STATUS_MT6797 0x0180
818 #define SPM_PWR_STATUS_2ND_MT6797 0x0184
819
820 static const struct scp_subdomain scp_subdomain_mt6797[] = {
821 {MT6797_POWER_DOMAIN_MM, MT6797_POWER_DOMAIN_VDEC},
822 {MT6797_POWER_DOMAIN_MM, MT6797_POWER_DOMAIN_ISP},
823 {MT6797_POWER_DOMAIN_MM, MT6797_POWER_DOMAIN_VENC},
824 {MT6797_POWER_DOMAIN_MM, MT6797_POWER_DOMAIN_MJC},
825 };
826
827 /*
828 * MT7622 power domain support
829 */
830
831 static const struct scp_domain_data scp_domain_data_mt7622[] = {
832 [MT7622_POWER_DOMAIN_ETHSYS] = {
833 .name = "ethsys",
834 .sta_mask = PWR_STATUS_ETHSYS,
835 .ctl_offs = SPM_ETHSYS_PWR_CON,
836 .sram_pdn_bits = GENMASK(11, 8),
837 .sram_pdn_ack_bits = GENMASK(15, 12),
838 .clk_id = {CLK_NONE},
839 .bus_prot_mask = MT7622_TOP_AXI_PROT_EN_ETHSYS,
840 .caps = MTK_SCPD_ACTIVE_WAKEUP,
841 },
842 [MT7622_POWER_DOMAIN_HIF0] = {
843 .name = "hif0",
844 .sta_mask = PWR_STATUS_HIF0,
845 .ctl_offs = SPM_HIF0_PWR_CON,
846 .sram_pdn_bits = GENMASK(11, 8),
847 .sram_pdn_ack_bits = GENMASK(15, 12),
848 .clk_id = {CLK_HIFSEL},
849 .bus_prot_mask = MT7622_TOP_AXI_PROT_EN_HIF0,
850 .caps = MTK_SCPD_ACTIVE_WAKEUP,
851 },
852 [MT7622_POWER_DOMAIN_HIF1] = {
853 .name = "hif1",
854 .sta_mask = PWR_STATUS_HIF1,
855 .ctl_offs = SPM_HIF1_PWR_CON,
856 .sram_pdn_bits = GENMASK(11, 8),
857 .sram_pdn_ack_bits = GENMASK(15, 12),
858 .clk_id = {CLK_HIFSEL},
859 .bus_prot_mask = MT7622_TOP_AXI_PROT_EN_HIF1,
860 .caps = MTK_SCPD_ACTIVE_WAKEUP,
861 },
862 [MT7622_POWER_DOMAIN_WB] = {
863 .name = "wb",
864 .sta_mask = PWR_STATUS_WB,
865 .ctl_offs = SPM_WB_PWR_CON,
866 .sram_pdn_bits = 0,
867 .sram_pdn_ack_bits = 0,
868 .clk_id = {CLK_NONE},
869 .bus_prot_mask = MT7622_TOP_AXI_PROT_EN_WB,
870 .caps = MTK_SCPD_ACTIVE_WAKEUP | MTK_SCPD_FWAIT_SRAM,
871 },
872 };
873
874 /*
875 * MT7623A power domain support
876 */
877
878 static const struct scp_domain_data scp_domain_data_mt7623a[] = {
879 [MT7623A_POWER_DOMAIN_CONN] = {
880 .name = "conn",
881 .sta_mask = PWR_STATUS_CONN,
882 .ctl_offs = SPM_CONN_PWR_CON,
883 .bus_prot_mask = MT2701_TOP_AXI_PROT_EN_CONN_M |
884 MT2701_TOP_AXI_PROT_EN_CONN_S,
885 .clk_id = {CLK_NONE},
886 .caps = MTK_SCPD_ACTIVE_WAKEUP,
887 },
888 [MT7623A_POWER_DOMAIN_ETH] = {
889 .name = "eth",
890 .sta_mask = PWR_STATUS_ETH,
891 .ctl_offs = SPM_ETH_PWR_CON,
892 .sram_pdn_bits = GENMASK(11, 8),
893 .sram_pdn_ack_bits = GENMASK(15, 12),
894 .clk_id = {CLK_ETHIF},
895 .caps = MTK_SCPD_ACTIVE_WAKEUP,
896 },
897 [MT7623A_POWER_DOMAIN_HIF] = {
898 .name = "hif",
899 .sta_mask = PWR_STATUS_HIF,
900 .ctl_offs = SPM_HIF_PWR_CON,
901 .sram_pdn_bits = GENMASK(11, 8),
902 .sram_pdn_ack_bits = GENMASK(15, 12),
903 .clk_id = {CLK_ETHIF},
904 .caps = MTK_SCPD_ACTIVE_WAKEUP,
905 },
906 [MT7623A_POWER_DOMAIN_IFR_MSC] = {
907 .name = "ifr_msc",
908 .sta_mask = PWR_STATUS_IFR_MSC,
909 .ctl_offs = SPM_IFR_MSC_PWR_CON,
910 .clk_id = {CLK_NONE},
911 .caps = MTK_SCPD_ACTIVE_WAKEUP,
912 },
913 };
914
915 /*
916 * MT8173 power domain support
917 */
918
919 static const struct scp_domain_data scp_domain_data_mt8173[] = {
920 [MT8173_POWER_DOMAIN_VDEC] = {
921 .name = "vdec",
922 .sta_mask = PWR_STATUS_VDEC,
923 .ctl_offs = SPM_VDE_PWR_CON,
924 .sram_pdn_bits = GENMASK(11, 8),
925 .sram_pdn_ack_bits = GENMASK(12, 12),
926 .clk_id = {CLK_MM},
927 },
928 [MT8173_POWER_DOMAIN_VENC] = {
929 .name = "venc",
930 .sta_mask = PWR_STATUS_VENC,
931 .ctl_offs = SPM_VEN_PWR_CON,
932 .sram_pdn_bits = GENMASK(11, 8),
933 .sram_pdn_ack_bits = GENMASK(15, 12),
934 .clk_id = {CLK_MM, CLK_VENC},
935 },
936 [MT8173_POWER_DOMAIN_ISP] = {
937 .name = "isp",
938 .sta_mask = PWR_STATUS_ISP,
939 .ctl_offs = SPM_ISP_PWR_CON,
940 .sram_pdn_bits = GENMASK(11, 8),
941 .sram_pdn_ack_bits = GENMASK(13, 12),
942 .clk_id = {CLK_MM},
943 },
944 [MT8173_POWER_DOMAIN_MM] = {
945 .name = "mm",
946 .sta_mask = PWR_STATUS_DISP,
947 .ctl_offs = SPM_DIS_PWR_CON,
948 .sram_pdn_bits = GENMASK(11, 8),
949 .sram_pdn_ack_bits = GENMASK(12, 12),
950 .clk_id = {CLK_MM},
951 .bus_prot_mask = MT8173_TOP_AXI_PROT_EN_MM_M0 |
952 MT8173_TOP_AXI_PROT_EN_MM_M1,
953 },
954 [MT8173_POWER_DOMAIN_VENC_LT] = {
955 .name = "venc_lt",
956 .sta_mask = PWR_STATUS_VENC_LT,
957 .ctl_offs = SPM_VEN2_PWR_CON,
958 .sram_pdn_bits = GENMASK(11, 8),
959 .sram_pdn_ack_bits = GENMASK(15, 12),
960 .clk_id = {CLK_MM, CLK_VENC_LT},
961 },
962 [MT8173_POWER_DOMAIN_AUDIO] = {
963 .name = "audio",
964 .sta_mask = PWR_STATUS_AUDIO,
965 .ctl_offs = SPM_AUDIO_PWR_CON,
966 .sram_pdn_bits = GENMASK(11, 8),
967 .sram_pdn_ack_bits = GENMASK(15, 12),
968 .clk_id = {CLK_NONE},
969 },
970 [MT8173_POWER_DOMAIN_USB] = {
971 .name = "usb",
972 .sta_mask = PWR_STATUS_USB,
973 .ctl_offs = SPM_USB_PWR_CON,
974 .sram_pdn_bits = GENMASK(11, 8),
975 .sram_pdn_ack_bits = GENMASK(15, 12),
976 .clk_id = {CLK_NONE},
977 .caps = MTK_SCPD_ACTIVE_WAKEUP,
978 },
979 [MT8173_POWER_DOMAIN_MFG_ASYNC] = {
980 .name = "mfg_async",
981 .sta_mask = PWR_STATUS_MFG_ASYNC,
982 .ctl_offs = SPM_MFG_ASYNC_PWR_CON,
983 .sram_pdn_bits = GENMASK(11, 8),
984 .sram_pdn_ack_bits = 0,
985 .clk_id = {CLK_MFG},
986 },
987 [MT8173_POWER_DOMAIN_MFG_2D] = {
988 .name = "mfg_2d",
989 .sta_mask = PWR_STATUS_MFG_2D,
990 .ctl_offs = SPM_MFG_2D_PWR_CON,
991 .sram_pdn_bits = GENMASK(11, 8),
992 .sram_pdn_ack_bits = GENMASK(13, 12),
993 .clk_id = {CLK_NONE},
994 },
995 [MT8173_POWER_DOMAIN_MFG] = {
996 .name = "mfg",
997 .sta_mask = PWR_STATUS_MFG,
998 .ctl_offs = SPM_MFG_PWR_CON,
999 .sram_pdn_bits = GENMASK(13, 8),
1000 .sram_pdn_ack_bits = GENMASK(21, 16),
1001 .clk_id = {CLK_NONE},
1002 .bus_prot_mask = MT8173_TOP_AXI_PROT_EN_MFG_S |
1003 MT8173_TOP_AXI_PROT_EN_MFG_M0 |
1004 MT8173_TOP_AXI_PROT_EN_MFG_M1 |
1005 MT8173_TOP_AXI_PROT_EN_MFG_SNOOP_OUT,
1006 },
1007 };
1008
1009 static const struct scp_subdomain scp_subdomain_mt8173[] = {
1010 {MT8173_POWER_DOMAIN_MFG_ASYNC, MT8173_POWER_DOMAIN_MFG_2D},
1011 {MT8173_POWER_DOMAIN_MFG_2D, MT8173_POWER_DOMAIN_MFG},
1012 };
1013
1014 static const struct scp_soc_data mt2701_data = {
1015 .domains = scp_domain_data_mt2701,
1016 .num_domains = ARRAY_SIZE(scp_domain_data_mt2701),
1017 .regs = {
1018 .pwr_sta_offs = SPM_PWR_STATUS,
1019 .pwr_sta2nd_offs = SPM_PWR_STATUS_2ND
1020 },
1021 .bus_prot_reg_update = true,
1022 };
1023
1024 static const struct scp_soc_data mt2712_data = {
1025 .domains = scp_domain_data_mt2712,
1026 .num_domains = ARRAY_SIZE(scp_domain_data_mt2712),
1027 .subdomains = scp_subdomain_mt2712,
1028 .num_subdomains = ARRAY_SIZE(scp_subdomain_mt2712),
1029 .regs = {
1030 .pwr_sta_offs = SPM_PWR_STATUS,
1031 .pwr_sta2nd_offs = SPM_PWR_STATUS_2ND
1032 },
1033 .bus_prot_reg_update = false,
1034 };
1035
1036 static const struct scp_soc_data mt6797_data = {
1037 .domains = scp_domain_data_mt6797,
1038 .num_domains = ARRAY_SIZE(scp_domain_data_mt6797),
1039 .subdomains = scp_subdomain_mt6797,
1040 .num_subdomains = ARRAY_SIZE(scp_subdomain_mt6797),
1041 .regs = {
1042 .pwr_sta_offs = SPM_PWR_STATUS_MT6797,
1043 .pwr_sta2nd_offs = SPM_PWR_STATUS_2ND_MT6797
1044 },
1045 .bus_prot_reg_update = true,
1046 };
1047
1048 static const struct scp_soc_data mt7622_data = {
1049 .domains = scp_domain_data_mt7622,
1050 .num_domains = ARRAY_SIZE(scp_domain_data_mt7622),
1051 .regs = {
1052 .pwr_sta_offs = SPM_PWR_STATUS,
1053 .pwr_sta2nd_offs = SPM_PWR_STATUS_2ND
1054 },
1055 .bus_prot_reg_update = true,
1056 };
1057
1058 static const struct scp_soc_data mt7623a_data = {
1059 .domains = scp_domain_data_mt7623a,
1060 .num_domains = ARRAY_SIZE(scp_domain_data_mt7623a),
1061 .regs = {
1062 .pwr_sta_offs = SPM_PWR_STATUS,
1063 .pwr_sta2nd_offs = SPM_PWR_STATUS_2ND
1064 },
1065 .bus_prot_reg_update = true,
1066 };
1067
1068 static const struct scp_soc_data mt8173_data = {
1069 .domains = scp_domain_data_mt8173,
1070 .num_domains = ARRAY_SIZE(scp_domain_data_mt8173),
1071 .subdomains = scp_subdomain_mt8173,
1072 .num_subdomains = ARRAY_SIZE(scp_subdomain_mt8173),
1073 .regs = {
1074 .pwr_sta_offs = SPM_PWR_STATUS,
1075 .pwr_sta2nd_offs = SPM_PWR_STATUS_2ND
1076 },
1077 .bus_prot_reg_update = true,
1078 };
1079
1080 /*
1081 * scpsys driver init
1082 */
1083
1084 static const struct of_device_id of_scpsys_match_tbl[] = {
1085 {
1086 .compatible = "mediatek,mt2701-scpsys",
1087 .data = &mt2701_data,
1088 }, {
1089 .compatible = "mediatek,mt2712-scpsys",
1090 .data = &mt2712_data,
1091 }, {
1092 .compatible = "mediatek,mt6797-scpsys",
1093 .data = &mt6797_data,
1094 }, {
1095 .compatible = "mediatek,mt7622-scpsys",
1096 .data = &mt7622_data,
1097 }, {
1098 .compatible = "mediatek,mt7623a-scpsys",
1099 .data = &mt7623a_data,
1100 }, {
1101 .compatible = "mediatek,mt8173-scpsys",
1102 .data = &mt8173_data,
1103 }, {
1104 /* sentinel */
1105 }
1106 };
1107
scpsys_probe(struct platform_device * pdev)1108 static int scpsys_probe(struct platform_device *pdev)
1109 {
1110 const struct scp_subdomain *sd;
1111 const struct scp_soc_data *soc;
1112 struct scp *scp;
1113 struct genpd_onecell_data *pd_data;
1114 int i, ret;
1115
1116 soc = of_device_get_match_data(&pdev->dev);
1117
1118 scp = init_scp(pdev, soc->domains, soc->num_domains, &soc->regs,
1119 soc->bus_prot_reg_update);
1120 if (IS_ERR(scp))
1121 return PTR_ERR(scp);
1122
1123 mtk_register_power_domains(pdev, scp, soc->num_domains);
1124
1125 pd_data = &scp->pd_data;
1126
1127 for (i = 0, sd = soc->subdomains; i < soc->num_subdomains; i++, sd++) {
1128 ret = pm_genpd_add_subdomain(pd_data->domains[sd->origin],
1129 pd_data->domains[sd->subdomain]);
1130 if (ret && IS_ENABLED(CONFIG_PM))
1131 dev_err(&pdev->dev, "Failed to add subdomain: %d\n",
1132 ret);
1133 }
1134
1135 return 0;
1136 }
1137
1138 static struct platform_driver scpsys_drv = {
1139 .probe = scpsys_probe,
1140 .driver = {
1141 .name = "mtk-scpsys",
1142 .suppress_bind_attrs = true,
1143 .owner = THIS_MODULE,
1144 .of_match_table = of_scpsys_match_tbl,
1145 },
1146 };
1147 builtin_platform_driver(scpsys_drv);
1148
