1 // SPDX-License-Identifier: GPL-2.0-only
2 /*
3 * AMD common ACP PCI driver for ACP6.3, ACP7.0 & ACP7.1 platforms.
4 *
5 * Copyright 2022, 2025 Advanced Micro Devices, Inc.
6 */
7
8 #include <linux/pci.h>
9 #include <linux/bitops.h>
10 #include <linux/module.h>
11 #include <linux/io.h>
12 #include <linux/delay.h>
13 #include <linux/platform_device.h>
14 #include <linux/acpi.h>
15 #include <linux/interrupt.h>
16 #include <sound/pcm_params.h>
17 #include <linux/pm_runtime.h>
18 #include <linux/iopoll.h>
19 #include <linux/soundwire/sdw_amd.h>
20 #include "../mach-config.h"
21
22 #include "acp63.h"
23
handle_acp70_sdw_wake_event(struct acp63_dev_data * adata)24 static void handle_acp70_sdw_wake_event(struct acp63_dev_data *adata)
25 {
26 struct amd_sdw_manager *amd_manager;
27
28 if (adata->acp70_sdw0_wake_event) {
29 amd_manager = dev_get_drvdata(&adata->sdw->pdev[0]->dev);
30 if (amd_manager)
31 pm_request_resume(amd_manager->dev);
32 adata->acp70_sdw0_wake_event = 0;
33 }
34
35 if (adata->acp70_sdw1_wake_event) {
36 amd_manager = dev_get_drvdata(&adata->sdw->pdev[1]->dev);
37 if (amd_manager)
38 pm_request_resume(amd_manager->dev);
39 adata->acp70_sdw1_wake_event = 0;
40 }
41 }
42
check_and_handle_acp70_sdw_wake_irq(struct acp63_dev_data * adata)43 static short int check_and_handle_acp70_sdw_wake_irq(struct acp63_dev_data *adata)
44 {
45 u32 ext_intr_stat1;
46 int irq_flag = 0;
47 bool sdw_wake_irq = false;
48
49 ext_intr_stat1 = readl(adata->acp63_base + ACP_EXTERNAL_INTR_STAT1);
50 if (ext_intr_stat1 & ACP70_SDW0_HOST_WAKE_STAT) {
51 writel(ACP70_SDW0_HOST_WAKE_STAT, adata->acp63_base + ACP_EXTERNAL_INTR_STAT1);
52 adata->acp70_sdw0_wake_event = true;
53 sdw_wake_irq = true;
54 }
55
56 if (ext_intr_stat1 & ACP70_SDW1_HOST_WAKE_STAT) {
57 writel(ACP70_SDW1_HOST_WAKE_STAT, adata->acp63_base + ACP_EXTERNAL_INTR_STAT1);
58 adata->acp70_sdw1_wake_event = true;
59 sdw_wake_irq = true;
60 }
61
62 if (ext_intr_stat1 & ACP70_SDW0_PME_STAT) {
63 writel(0, adata->acp63_base + ACP_SW0_WAKE_EN);
64 writel(ACP70_SDW0_PME_STAT, adata->acp63_base + ACP_EXTERNAL_INTR_STAT1);
65 adata->acp70_sdw0_wake_event = true;
66 sdw_wake_irq = true;
67 }
68
69 if (ext_intr_stat1 & ACP70_SDW1_PME_STAT) {
70 writel(0, adata->acp63_base + ACP_SW1_WAKE_EN);
71 writel(ACP70_SDW1_PME_STAT, adata->acp63_base + ACP_EXTERNAL_INTR_STAT1);
72 adata->acp70_sdw1_wake_event = true;
73 sdw_wake_irq = true;
74 }
75
76 if (sdw_wake_irq) {
77 handle_acp70_sdw_wake_event(adata);
78 irq_flag = 1;
79 }
80 return irq_flag;
81 }
82
check_and_handle_sdw_dma_irq(struct acp63_dev_data * adata,u32 ext_intr_stat,u32 ext_intr_stat1)83 static short int check_and_handle_sdw_dma_irq(struct acp63_dev_data *adata, u32 ext_intr_stat,
84 u32 ext_intr_stat1)
85 {
86 u32 stream_id = 0;
87 u16 sdw_dma_irq_flag = 0;
88 u16 index;
89
90 if (ext_intr_stat & ACP63_SDW_DMA_IRQ_MASK) {
91 for (index = ACP_AUDIO2_RX_THRESHOLD; index <= ACP_AUDIO0_TX_THRESHOLD; index++) {
92 if (ext_intr_stat & BIT(index)) {
93 writel(BIT(index), adata->acp63_base + ACP_EXTERNAL_INTR_STAT);
94 switch (index) {
95 case ACP_AUDIO0_TX_THRESHOLD:
96 stream_id = ACP63_SDW0_AUDIO0_TX;
97 break;
98 case ACP_AUDIO1_TX_THRESHOLD:
99 stream_id = ACP63_SDW0_AUDIO1_TX;
100 break;
101 case ACP_AUDIO2_TX_THRESHOLD:
102 stream_id = ACP63_SDW0_AUDIO2_TX;
103 break;
104 case ACP_AUDIO0_RX_THRESHOLD:
105 stream_id = ACP63_SDW0_AUDIO0_RX;
106 break;
107 case ACP_AUDIO1_RX_THRESHOLD:
108 stream_id = ACP63_SDW0_AUDIO1_RX;
109 break;
110 case ACP_AUDIO2_RX_THRESHOLD:
111 stream_id = ACP63_SDW0_AUDIO2_RX;
112 break;
113 }
114 switch (adata->acp_rev) {
115 case ACP63_PCI_REV:
116 adata->acp63_sdw0_dma_intr_stat[stream_id] = 1;
117 break;
118 case ACP70_PCI_REV:
119 case ACP71_PCI_REV:
120 case ACP72_PCI_REV:
121 adata->acp70_sdw0_dma_intr_stat[stream_id] = 1;
122 break;
123 }
124 sdw_dma_irq_flag = 1;
125 }
126 }
127 }
128 switch (adata->acp_rev) {
129 case ACP63_PCI_REV:
130 if (ext_intr_stat1 & ACP63_P1_AUDIO1_RX_THRESHOLD) {
131 writel(ACP63_P1_AUDIO1_RX_THRESHOLD,
132 adata->acp63_base + ACP_EXTERNAL_INTR_STAT1);
133 adata->acp63_sdw1_dma_intr_stat[ACP63_SDW1_AUDIO1_RX] = 1;
134 sdw_dma_irq_flag = 1;
135 }
136 if (ext_intr_stat1 & ACP63_P1_AUDIO1_TX_THRESHOLD) {
137 writel(ACP63_P1_AUDIO1_TX_THRESHOLD,
138 adata->acp63_base + ACP_EXTERNAL_INTR_STAT1);
139 adata->acp63_sdw1_dma_intr_stat[ACP63_SDW1_AUDIO1_TX] = 1;
140 sdw_dma_irq_flag = 1;
141 }
142 break;
143 case ACP70_PCI_REV:
144 case ACP71_PCI_REV:
145 case ACP72_PCI_REV:
146 if (ext_intr_stat1 & ACP70_P1_SDW_DMA_IRQ_MASK) {
147 for (index = ACP70_P1_AUDIO2_RX_THRESHOLD;
148 index <= ACP70_P1_AUDIO0_TX_THRESHOLD; index++) {
149 if (ext_intr_stat1 & BIT(index)) {
150 writel(BIT(index),
151 adata->acp63_base + ACP_EXTERNAL_INTR_STAT1);
152 switch (index) {
153 case ACP70_P1_AUDIO0_TX_THRESHOLD:
154 stream_id = ACP70_SDW_AUDIO0_TX;
155 break;
156 case ACP70_P1_AUDIO1_TX_THRESHOLD:
157 stream_id = ACP70_SDW_AUDIO1_TX;
158 break;
159 case ACP70_P1_AUDIO2_TX_THRESHOLD:
160 stream_id = ACP70_SDW_AUDIO2_TX;
161 break;
162 case ACP70_P1_AUDIO0_RX_THRESHOLD:
163 stream_id = ACP70_SDW_AUDIO0_RX;
164 break;
165 case ACP70_P1_AUDIO1_RX_THRESHOLD:
166 stream_id = ACP70_SDW_AUDIO1_RX;
167 break;
168 case ACP70_P1_AUDIO2_RX_THRESHOLD:
169 stream_id = ACP70_SDW_AUDIO2_RX;
170 break;
171 }
172
173 adata->acp70_sdw1_dma_intr_stat[stream_id] = 1;
174 sdw_dma_irq_flag = 1;
175 }
176 }
177 }
178 break;
179 }
180 return sdw_dma_irq_flag;
181 }
182
acp63_irq_thread(int irq,void * context)183 static irqreturn_t acp63_irq_thread(int irq, void *context)
184 {
185 struct acp63_dev_data *adata = context;
186
187 acp_hw_sdw_dma_irq_thread(adata);
188 return IRQ_HANDLED;
189 }
190
acp63_irq_handler(int irq,void * dev_id)191 static irqreturn_t acp63_irq_handler(int irq, void *dev_id)
192 {
193 struct acp63_dev_data *adata;
194 struct pdm_dev_data *ps_pdm_data;
195 struct amd_sdw_manager *amd_manager;
196 u32 ext_intr_stat, ext_intr_stat1;
197 u16 irq_flag = 0;
198 u16 wake_irq_flag = 0;
199 u16 sdw_dma_irq_flag = 0;
200
201 adata = dev_id;
202 if (!adata)
203 return IRQ_NONE;
204 /* ACP interrupts will be cleared by reading particular bit and writing
205 * same value to the status register. writing zero's doesn't have any
206 * effect.
207 * Bit by bit checking of IRQ field is implemented.
208 */
209 ext_intr_stat = readl(adata->acp63_base + ACP_EXTERNAL_INTR_STAT);
210 if (ext_intr_stat & ACP_SDW0_STAT) {
211 writel(ACP_SDW0_STAT, adata->acp63_base + ACP_EXTERNAL_INTR_STAT);
212 amd_manager = dev_get_drvdata(&adata->sdw->pdev[0]->dev);
213 if (amd_manager)
214 schedule_work(&amd_manager->amd_sdw_irq_thread);
215 irq_flag = 1;
216 }
217
218 ext_intr_stat1 = readl(adata->acp63_base + ACP_EXTERNAL_INTR_STAT1);
219 if (ext_intr_stat1 & ACP_SDW1_STAT) {
220 writel(ACP_SDW1_STAT, adata->acp63_base + ACP_EXTERNAL_INTR_STAT1);
221 amd_manager = dev_get_drvdata(&adata->sdw->pdev[1]->dev);
222 if (amd_manager)
223 schedule_work(&amd_manager->amd_sdw_irq_thread);
224 irq_flag = 1;
225 }
226
227 if (ext_intr_stat & ACP_ERROR_IRQ) {
228 writel(ACP_ERROR_IRQ, adata->acp63_base + ACP_EXTERNAL_INTR_STAT);
229 /* TODO: Report SoundWire Manager instance errors */
230 writel(0, adata->acp63_base + ACP_SW0_I2S_ERROR_REASON);
231 writel(0, adata->acp63_base + ACP_SW1_I2S_ERROR_REASON);
232 writel(0, adata->acp63_base + ACP_ERROR_STATUS);
233 irq_flag = 1;
234 }
235
236 if (adata->acp_rev >= ACP70_PCI_REV)
237 wake_irq_flag = check_and_handle_acp70_sdw_wake_irq(adata);
238
239 if (ext_intr_stat & BIT(PDM_DMA_STAT)) {
240 ps_pdm_data = dev_get_drvdata(&adata->pdm_dev->dev);
241 writel(BIT(PDM_DMA_STAT), adata->acp63_base + ACP_EXTERNAL_INTR_STAT);
242 if (ps_pdm_data->capture_stream)
243 snd_pcm_period_elapsed(ps_pdm_data->capture_stream);
244 irq_flag = 1;
245 }
246
247 sdw_dma_irq_flag = check_and_handle_sdw_dma_irq(adata, ext_intr_stat, ext_intr_stat1);
248 if (sdw_dma_irq_flag)
249 return IRQ_WAKE_THREAD;
250
251 if (irq_flag | wake_irq_flag)
252 return IRQ_HANDLED;
253 else
254 return IRQ_NONE;
255 }
256
257 #if IS_ENABLED(CONFIG_SND_SOC_AMD_SOUNDWIRE)
acp_scan_sdw_devices(struct device * dev,u64 addr)258 static int acp_scan_sdw_devices(struct device *dev, u64 addr)
259 {
260 struct acpi_device *sdw_dev;
261 struct acp63_dev_data *acp_data;
262
263 acp_data = dev_get_drvdata(dev);
264 if (!addr)
265 return -ENODEV;
266
267 sdw_dev = acpi_find_child_device(ACPI_COMPANION(dev), addr, 0);
268 if (!sdw_dev)
269 return -ENODEV;
270
271 acp_data->info.handle = sdw_dev->handle;
272 acp_data->info.count = AMD_SDW_MAX_MANAGERS;
273 return amd_sdw_scan_controller(&acp_data->info);
274 }
275
amd_sdw_probe(struct device * dev)276 static int amd_sdw_probe(struct device *dev)
277 {
278 struct acp63_dev_data *acp_data;
279 struct sdw_amd_res sdw_res;
280 int ret;
281
282 acp_data = dev_get_drvdata(dev);
283 memset(&sdw_res, 0, sizeof(sdw_res));
284 sdw_res.addr = acp_data->addr;
285 sdw_res.reg_range = acp_data->reg_range;
286 sdw_res.handle = acp_data->info.handle;
287 sdw_res.parent = dev;
288 sdw_res.dev = dev;
289 sdw_res.acp_lock = &acp_data->acp_lock;
290 sdw_res.count = acp_data->info.count;
291 sdw_res.mmio_base = acp_data->acp63_base;
292 sdw_res.acp_rev = acp_data->acp_rev;
293 sdw_res.link_mask = acp_data->info.link_mask;
294 ret = sdw_amd_probe(&sdw_res, &acp_data->sdw);
295 if (ret)
296 dev_err(dev, "error: SoundWire probe failed\n");
297 return ret;
298 }
299
amd_sdw_exit(struct acp63_dev_data * acp_data)300 static int amd_sdw_exit(struct acp63_dev_data *acp_data)
301 {
302 if (acp_data->sdw)
303 sdw_amd_exit(acp_data->sdw);
304 acp_data->sdw = NULL;
305
306 return 0;
307 }
308
acp63_sdw_machine_select(struct device * dev)309 static struct snd_soc_acpi_mach *acp63_sdw_machine_select(struct device *dev)
310 {
311 struct snd_soc_acpi_mach *mach;
312 const struct snd_soc_acpi_link_adr *link;
313 struct acp63_dev_data *acp_data = dev_get_drvdata(dev);
314 int ret, i;
315
316 if (acp_data->info.count) {
317 ret = sdw_amd_get_slave_info(acp_data->sdw);
318 if (ret) {
319 dev_dbg(dev, "failed to read slave information\n");
320 return NULL;
321 }
322 for (mach = acp_data->machines; mach; mach++) {
323 if (!mach->links)
324 break;
325 link = mach->links;
326 for (i = 0; i < acp_data->info.count && link->num_adr; link++, i++) {
327 if (!snd_soc_acpi_sdw_link_slaves_found(dev, link,
328 acp_data->sdw->peripherals))
329 break;
330 }
331 if (i == acp_data->info.count || !link->num_adr)
332 break;
333 }
334 if (mach && mach->link_mask) {
335 mach->mach_params.links = mach->links;
336 mach->mach_params.link_mask = mach->link_mask;
337 mach->mach_params.subsystem_rev = acp_data->acp_rev;
338 return mach;
339 }
340 }
341 dev_dbg(dev, "No SoundWire machine driver found\n");
342 return NULL;
343 }
344 #else
acp_scan_sdw_devices(struct device * dev,u64 addr)345 static int acp_scan_sdw_devices(struct device *dev, u64 addr)
346 {
347 return 0;
348 }
349
amd_sdw_probe(struct device * dev)350 static int amd_sdw_probe(struct device *dev)
351 {
352 return 0;
353 }
354
amd_sdw_exit(struct acp63_dev_data * acp_data)355 static int amd_sdw_exit(struct acp63_dev_data *acp_data)
356 {
357 return 0;
358 }
359
acp63_sdw_machine_select(struct device * dev)360 static struct snd_soc_acpi_mach *acp63_sdw_machine_select(struct device *dev)
361 {
362 return NULL;
363 }
364 #endif
365
acp63_machine_register(struct device * dev)366 static int acp63_machine_register(struct device *dev)
367 {
368 struct snd_soc_acpi_mach *mach;
369 struct acp63_dev_data *adata = dev_get_drvdata(dev);
370 int size;
371
372 if (adata->is_sdw_dev && adata->is_sdw_config) {
373 size = sizeof(*adata->machines);
374 mach = acp63_sdw_machine_select(dev);
375 if (mach) {
376 adata->mach_dev = platform_device_register_data(dev, mach->drv_name,
377 PLATFORM_DEVID_NONE, mach,
378 size);
379 if (IS_ERR(adata->mach_dev)) {
380 dev_err(dev,
381 "cannot register Machine device for SoundWire Interface\n");
382 return PTR_ERR(adata->mach_dev);
383 }
384 }
385
386 } else if (adata->is_pdm_dev && !adata->is_sdw_dev && adata->is_pdm_config) {
387 adata->mach_dev = platform_device_register_data(dev, "acp_ps_mach",
388 PLATFORM_DEVID_NONE, NULL, 0);
389 if (IS_ERR(adata->mach_dev)) {
390 dev_err(dev, "cannot register amd_ps_mach device\n");
391 return PTR_ERR(adata->mach_dev);
392 }
393 }
394 return 0;
395 }
396
get_acp63_device_config(struct pci_dev * pci,struct acp63_dev_data * acp_data)397 static int get_acp63_device_config(struct pci_dev *pci, struct acp63_dev_data *acp_data)
398 {
399 struct acpi_device *pdm_dev;
400 const union acpi_object *obj;
401 acpi_handle handle;
402 acpi_integer dmic_status;
403 bool is_dmic_dev = false;
404 bool is_sdw_dev = false;
405 bool wov_en, dmic_en;
406 int ret;
407
408 /* IF WOV entry not found, enable dmic based on acp-audio-device-type entry*/
409 wov_en = true;
410 dmic_en = false;
411
412 acp_hw_get_config(pci, acp_data);
413
414 if (acp_data->is_pdm_config) {
415 pdm_dev = acpi_find_child_device(ACPI_COMPANION(&pci->dev), ACP63_DMIC_ADDR, 0);
416 if (pdm_dev) {
417 /* is_dmic_dev flag will be set when ACP PDM controller device exists */
418 if (!acpi_dev_get_property(pdm_dev, "acp-audio-device-type",
419 ACPI_TYPE_INTEGER, &obj) &&
420 obj->integer.value == ACP_DMIC_DEV)
421 dmic_en = true;
422 }
423
424 handle = ACPI_HANDLE(&pci->dev);
425 ret = acpi_evaluate_integer(handle, "_WOV", NULL, &dmic_status);
426 if (!ACPI_FAILURE(ret))
427 wov_en = dmic_status;
428 }
429
430 if (dmic_en && wov_en)
431 is_dmic_dev = true;
432
433 if (acp_data->is_sdw_config) {
434 ret = acp_scan_sdw_devices(&pci->dev, ACP63_SDW_ADDR);
435 if (!ret && acp_data->info.link_mask)
436 is_sdw_dev = true;
437 }
438
439 acp_data->is_pdm_dev = is_dmic_dev;
440 acp_data->is_sdw_dev = is_sdw_dev;
441 if (!is_dmic_dev && !is_sdw_dev) {
442 dev_dbg(&pci->dev, "No PDM or SoundWire manager devices found\n");
443 return -ENODEV;
444 }
445 return 0;
446 }
447
acp63_fill_platform_dev_info(struct platform_device_info * pdevinfo,struct device * parent,struct fwnode_handle * fw_node,char * name,unsigned int id,const struct resource * res,unsigned int num_res,const void * data,size_t size_data)448 static void acp63_fill_platform_dev_info(struct platform_device_info *pdevinfo,
449 struct device *parent,
450 struct fwnode_handle *fw_node,
451 char *name, unsigned int id,
452 const struct resource *res,
453 unsigned int num_res,
454 const void *data,
455 size_t size_data)
456 {
457 pdevinfo->name = name;
458 pdevinfo->id = id;
459 pdevinfo->parent = parent;
460 pdevinfo->num_res = num_res;
461 pdevinfo->res = res;
462 pdevinfo->data = data;
463 pdevinfo->size_data = size_data;
464 pdevinfo->fwnode = fw_node;
465 }
466
create_acp63_platform_devs(struct pci_dev * pci,struct acp63_dev_data * adata,u32 addr)467 static int create_acp63_platform_devs(struct pci_dev *pci, struct acp63_dev_data *adata, u32 addr)
468 {
469 struct platform_device_info pdevinfo;
470 struct device *parent;
471 int ret;
472
473 parent = &pci->dev;
474
475 if (adata->is_sdw_dev || adata->is_pdm_dev) {
476 adata->res = devm_kzalloc(&pci->dev, sizeof(struct resource), GFP_KERNEL);
477 if (!adata->res) {
478 ret = -ENOMEM;
479 goto de_init;
480 }
481 adata->res->flags = IORESOURCE_MEM;
482 adata->res->start = addr;
483 adata->res->end = addr + (ACP63_REG_END - ACP63_REG_START);
484 memset(&pdevinfo, 0, sizeof(pdevinfo));
485 }
486
487 if (adata->is_pdm_dev && adata->is_pdm_config) {
488 acp63_fill_platform_dev_info(&pdevinfo, parent, NULL, "acp_ps_pdm_dma",
489 0, adata->res, 1, NULL, 0);
490
491 adata->pdm_dev = platform_device_register_full(&pdevinfo);
492 if (IS_ERR(adata->pdm_dev)) {
493 dev_err(&pci->dev,
494 "cannot register %s device\n", pdevinfo.name);
495 ret = PTR_ERR(adata->pdm_dev);
496 goto de_init;
497 }
498 memset(&pdevinfo, 0, sizeof(pdevinfo));
499 acp63_fill_platform_dev_info(&pdevinfo, parent, NULL, "dmic-codec",
500 0, NULL, 0, NULL, 0);
501 adata->dmic_codec_dev = platform_device_register_full(&pdevinfo);
502 if (IS_ERR(adata->dmic_codec_dev)) {
503 dev_err(&pci->dev,
504 "cannot register %s device\n", pdevinfo.name);
505 ret = PTR_ERR(adata->dmic_codec_dev);
506 goto unregister_pdm_dev;
507 }
508 }
509 if (adata->is_sdw_dev && adata->is_sdw_config) {
510 ret = amd_sdw_probe(&pci->dev);
511 if (ret) {
512 if (adata->is_pdm_dev)
513 goto unregister_dmic_codec_dev;
514 else
515 goto de_init;
516 }
517 memset(&pdevinfo, 0, sizeof(pdevinfo));
518 acp63_fill_platform_dev_info(&pdevinfo, parent, NULL, "amd_ps_sdw_dma",
519 0, adata->res, 1, NULL, 0);
520
521 adata->sdw_dma_dev = platform_device_register_full(&pdevinfo);
522 if (IS_ERR(adata->sdw_dma_dev)) {
523 dev_err(&pci->dev,
524 "cannot register %s device\n", pdevinfo.name);
525 ret = PTR_ERR(adata->sdw_dma_dev);
526 if (adata->is_pdm_dev)
527 goto unregister_dmic_codec_dev;
528 else
529 goto de_init;
530 }
531 }
532
533 return 0;
534 unregister_dmic_codec_dev:
535 platform_device_unregister(adata->dmic_codec_dev);
536 unregister_pdm_dev:
537 platform_device_unregister(adata->pdm_dev);
538 de_init:
539 if (acp_hw_deinit(adata, &pci->dev))
540 dev_err(&pci->dev, "ACP de-init failed\n");
541 return ret;
542 }
543
acp_hw_init_ops(struct acp63_dev_data * adata,struct pci_dev * pci)544 static int acp_hw_init_ops(struct acp63_dev_data *adata, struct pci_dev *pci)
545 {
546 adata->hw_ops = devm_kzalloc(&pci->dev, sizeof(struct acp_hw_ops),
547 GFP_KERNEL);
548 if (!adata->hw_ops)
549 return -ENOMEM;
550
551 switch (adata->acp_rev) {
552 case ACP63_PCI_REV:
553 acp63_hw_init_ops(adata->hw_ops);
554 break;
555 case ACP70_PCI_REV:
556 case ACP71_PCI_REV:
557 case ACP72_PCI_REV:
558 acp70_hw_init_ops(adata->hw_ops);
559 break;
560 default:
561 dev_err(&pci->dev, "ACP device not found\n");
562 return -ENODEV;
563 }
564 return 0;
565 }
566
snd_acp63_probe(struct pci_dev * pci,const struct pci_device_id * pci_id)567 static int snd_acp63_probe(struct pci_dev *pci,
568 const struct pci_device_id *pci_id)
569 {
570 struct acp63_dev_data *adata;
571 u32 addr;
572 u32 irqflags, flag;
573 int ret;
574
575 irqflags = IRQF_SHARED;
576
577 /* Return if acp config flag is defined */
578 flag = snd_amd_acp_find_config(pci);
579 if (flag)
580 return -ENODEV;
581
582 /* ACP PCI revision id check for ACP6.3, ACP7.0 & ACP7.1 platforms */
583 switch (pci->revision) {
584 case ACP63_PCI_REV:
585 case ACP70_PCI_REV:
586 case ACP71_PCI_REV:
587 case ACP72_PCI_REV:
588 break;
589 default:
590 dev_dbg(&pci->dev, "acp63/acp70/acp71 pci device not found\n");
591 return -ENODEV;
592 }
593 if (pci_enable_device(pci)) {
594 dev_err(&pci->dev, "pci_enable_device failed\n");
595 return -ENODEV;
596 }
597
598 ret = pci_request_regions(pci, "AMD ACP6.2 audio");
599 if (ret < 0) {
600 dev_err(&pci->dev, "pci_request_regions failed\n");
601 goto disable_pci;
602 }
603 adata = devm_kzalloc(&pci->dev, sizeof(struct acp63_dev_data),
604 GFP_KERNEL);
605 if (!adata) {
606 ret = -ENOMEM;
607 goto release_regions;
608 }
609
610 addr = pci_resource_start(pci, 0);
611 adata->acp63_base = devm_ioremap(&pci->dev, addr,
612 pci_resource_len(pci, 0));
613 if (!adata->acp63_base) {
614 ret = -ENOMEM;
615 goto release_regions;
616 }
617 adata->addr = addr;
618 adata->reg_range = ACP63_REG_END - ACP63_REG_START;
619 adata->acp_rev = pci->revision;
620 pci_set_master(pci);
621 pci_set_drvdata(pci, adata);
622 mutex_init(&adata->acp_lock);
623 ret = acp_hw_init_ops(adata, pci);
624 if (ret) {
625 dev_err(&pci->dev, "ACP hw ops init failed\n");
626 goto release_regions;
627 }
628 ret = acp_hw_init(adata, &pci->dev);
629 if (ret)
630 goto release_regions;
631 ret = devm_request_threaded_irq(&pci->dev, pci->irq, acp63_irq_handler,
632 acp63_irq_thread, irqflags, "ACP_PCI_IRQ", adata);
633 if (ret) {
634 dev_err(&pci->dev, "ACP PCI IRQ request failed\n");
635 goto de_init;
636 }
637 ret = get_acp63_device_config(pci, adata);
638 /* ACP PCI driver probe should be continued even PDM or SoundWire Devices are not found */
639 if (ret) {
640 dev_dbg(&pci->dev, "get acp device config failed:%d\n", ret);
641 goto skip_pdev_creation;
642 }
643 ret = create_acp63_platform_devs(pci, adata, addr);
644 if (ret < 0) {
645 dev_err(&pci->dev, "ACP platform devices creation failed\n");
646 goto de_init;
647 }
648 if (adata->acp_rev >= ACP70_PCI_REV)
649 adata->machines = snd_soc_acpi_amd_acp70_sdw_machines;
650 else
651 adata->machines = snd_soc_acpi_amd_acp63_sdw_machines;
652
653 ret = acp63_machine_register(&pci->dev);
654 if (ret) {
655 dev_err(&pci->dev, "ACP machine register failed\n");
656 goto de_init;
657 }
658 skip_pdev_creation:
659 device_set_wakeup_enable(&pci->dev, true);
660 pm_runtime_set_autosuspend_delay(&pci->dev, ACP_SUSPEND_DELAY_MS);
661 pm_runtime_use_autosuspend(&pci->dev);
662 pm_runtime_put_noidle(&pci->dev);
663 pm_runtime_allow(&pci->dev);
664 return 0;
665 de_init:
666 if (acp_hw_deinit(adata, &pci->dev))
667 dev_err(&pci->dev, "ACP de-init failed\n");
668 release_regions:
669 pci_release_regions(pci);
670 disable_pci:
671 pci_disable_device(pci);
672
673 return ret;
674 }
675
snd_acp_suspend(struct device * dev)676 static int snd_acp_suspend(struct device *dev)
677 {
678 return acp_hw_suspend(dev);
679 }
680
snd_acp_runtime_resume(struct device * dev)681 static int snd_acp_runtime_resume(struct device *dev)
682 {
683 return acp_hw_runtime_resume(dev);
684 }
685
snd_acp_resume(struct device * dev)686 static int snd_acp_resume(struct device *dev)
687 {
688 return acp_hw_resume(dev);
689 }
690
691 static const struct dev_pm_ops acp63_pm_ops = {
692 RUNTIME_PM_OPS(snd_acp_suspend, snd_acp_runtime_resume, NULL)
693 SYSTEM_SLEEP_PM_OPS(snd_acp_suspend, snd_acp_resume)
694 };
695
snd_acp63_remove(struct pci_dev * pci)696 static void snd_acp63_remove(struct pci_dev *pci)
697 {
698 struct acp63_dev_data *adata;
699 int ret;
700
701 adata = pci_get_drvdata(pci);
702 if (adata->sdw) {
703 amd_sdw_exit(adata);
704 platform_device_unregister(adata->sdw_dma_dev);
705 }
706 if (adata->is_pdm_dev) {
707 platform_device_unregister(adata->pdm_dev);
708 platform_device_unregister(adata->dmic_codec_dev);
709 }
710 if (adata->mach_dev)
711 platform_device_unregister(adata->mach_dev);
712 ret = acp_hw_deinit(adata, &pci->dev);
713 if (ret)
714 dev_err(&pci->dev, "ACP de-init failed\n");
715 pm_runtime_forbid(&pci->dev);
716 pm_runtime_get_noresume(&pci->dev);
717 pci_release_regions(pci);
718 pci_disable_device(pci);
719 }
720
721 static const struct pci_device_id snd_acp63_ids[] = {
722 { PCI_DEVICE(PCI_VENDOR_ID_AMD, ACP_DEVICE_ID),
723 .class = PCI_CLASS_MULTIMEDIA_OTHER << 8,
724 .class_mask = 0xffffff },
725 { 0, },
726 };
727 MODULE_DEVICE_TABLE(pci, snd_acp63_ids);
728
729 static struct pci_driver ps_acp63_driver = {
730 .name = KBUILD_MODNAME,
731 .id_table = snd_acp63_ids,
732 .probe = snd_acp63_probe,
733 .remove = snd_acp63_remove,
734 .driver = {
735 .pm = pm_ptr(&acp63_pm_ops),
736 }
737 };
738
739 module_pci_driver(ps_acp63_driver);
740
741 MODULE_AUTHOR("Vijendar.Mukunda@amd.com");
742 MODULE_AUTHOR("Syed.SabaKareem@amd.com");
743 MODULE_DESCRIPTION("AMD common ACP PCI driver for ACP6.3, ACP7.0 & ACP7.1 platforms");
744 MODULE_IMPORT_NS("SOUNDWIRE_AMD_INIT");
745 MODULE_IMPORT_NS("SND_AMD_SOUNDWIRE_ACPI");
746 MODULE_LICENSE("GPL v2");
747