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