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
24static 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(dev: &adata->sdw->pdev[0]->dev);
30 if (amd_manager)
31 pm_request_resume(dev: 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(dev: &adata->sdw->pdev[1]->dev);
37 if (amd_manager)
38 pm_request_resume(dev: amd_manager->dev);
39 adata->acp70_sdw1_wake_event = 0;
40 }
41}
42
43static 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(addr: adata->acp63_base + ACP_EXTERNAL_INTR_STAT1);
50 if (ext_intr_stat1 & ACP70_SDW0_HOST_WAKE_STAT) {
51 writel(ACP70_SDW0_HOST_WAKE_STAT, addr: 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, addr: 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(val: 0, addr: adata->acp63_base + ACP_SW0_WAKE_EN);
64 writel(ACP70_SDW0_PME_STAT, addr: 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(val: 0, addr: adata->acp63_base + ACP_SW1_WAKE_EN);
71 writel(ACP70_SDW1_PME_STAT, addr: 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
83static 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), addr: 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 addr: 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 addr: 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 addr: 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
183static 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
191static 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(addr: adata->acp63_base + ACP_EXTERNAL_INTR_STAT);
210 if (ext_intr_stat & ACP_SDW0_STAT) {
211 writel(ACP_SDW0_STAT, addr: adata->acp63_base + ACP_EXTERNAL_INTR_STAT);
212 amd_manager = dev_get_drvdata(dev: &adata->sdw->pdev[0]->dev);
213 if (amd_manager)
214 schedule_work(work: &amd_manager->amd_sdw_irq_thread);
215 irq_flag = 1;
216 }
217
218 ext_intr_stat1 = readl(addr: adata->acp63_base + ACP_EXTERNAL_INTR_STAT1);
219 if (ext_intr_stat1 & ACP_SDW1_STAT) {
220 writel(ACP_SDW1_STAT, addr: adata->acp63_base + ACP_EXTERNAL_INTR_STAT1);
221 amd_manager = dev_get_drvdata(dev: &adata->sdw->pdev[1]->dev);
222 if (amd_manager)
223 schedule_work(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, addr: adata->acp63_base + ACP_EXTERNAL_INTR_STAT);
229 /* TODO: Report SoundWire Manager instance errors */
230 writel(val: 0, addr: adata->acp63_base + ACP_SW0_I2S_ERROR_REASON);
231 writel(val: 0, addr: adata->acp63_base + ACP_SW1_I2S_ERROR_REASON);
232 writel(val: 0, addr: 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(dev: &adata->pdm_dev->dev);
241 writel(BIT(PDM_DMA_STAT), addr: adata->acp63_base + ACP_EXTERNAL_INTR_STAT);
242 if (ps_pdm_data->capture_stream)
243 snd_pcm_period_elapsed(substream: 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)
258static 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), address: addr, check_children: 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(info: &acp_data->info);
274}
275
276static 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(res: &sdw_res, ctx: &acp_data->sdw);
295 if (ret)
296 dev_err(dev, "error: SoundWire probe failed\n");
297 return ret;
298}
299
300static int amd_sdw_exit(struct acp63_dev_data *acp_data)
301{
302 if (acp_data->sdw)
303 sdw_amd_exit(ctx: acp_data->sdw);
304 acp_data->sdw = NULL;
305
306 return 0;
307}
308
309static 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(ctx: 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 peripherals: 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 mach->mach_params.subsystem_vendor = acp_data->subsystem_vendor;
339 mach->mach_params.subsystem_device = acp_data->subsystem_device;
340 mach->mach_params.subsystem_id_set = true;
341
342 dev_dbg(dev, "SSID %x%x\n", mach->mach_params.subsystem_vendor,
343 mach->mach_params.subsystem_device);
344 return mach;
345 }
346 }
347 dev_dbg(dev, "No SoundWire machine driver found\n");
348 return NULL;
349}
350#else
351static int acp_scan_sdw_devices(struct device *dev, u64 addr)
352{
353 return 0;
354}
355
356static int amd_sdw_probe(struct device *dev)
357{
358 return 0;
359}
360
361static int amd_sdw_exit(struct acp63_dev_data *acp_data)
362{
363 return 0;
364}
365
366static struct snd_soc_acpi_mach *acp63_sdw_machine_select(struct device *dev)
367{
368 return NULL;
369}
370#endif
371
372static int acp63_machine_register(struct device *dev)
373{
374 struct snd_soc_acpi_mach *mach;
375 struct acp63_dev_data *adata = dev_get_drvdata(dev);
376 int size;
377
378 if (adata->is_sdw_dev && adata->is_sdw_config) {
379 size = sizeof(*adata->machines);
380 mach = acp63_sdw_machine_select(dev);
381 if (mach) {
382 adata->mach_dev = platform_device_register_data(parent: dev, name: mach->drv_name,
383 PLATFORM_DEVID_NONE, data: mach,
384 size);
385 if (IS_ERR(ptr: adata->mach_dev)) {
386 dev_err(dev,
387 "cannot register Machine device for SoundWire Interface\n");
388 return PTR_ERR(ptr: adata->mach_dev);
389 }
390 }
391
392 } else if (adata->is_pdm_dev && !adata->is_sdw_dev && adata->is_pdm_config) {
393 adata->mach_dev = platform_device_register_data(parent: dev, name: "acp_ps_mach",
394 PLATFORM_DEVID_NONE, NULL, size: 0);
395 if (IS_ERR(ptr: adata->mach_dev)) {
396 dev_err(dev, "cannot register amd_ps_mach device\n");
397 return PTR_ERR(ptr: adata->mach_dev);
398 }
399 }
400 return 0;
401}
402
403static int get_acp63_device_config(struct pci_dev *pci, struct acp63_dev_data *acp_data)
404{
405 struct acpi_device *pdm_dev;
406 const union acpi_object *obj;
407 acpi_handle handle;
408 acpi_integer dmic_status;
409 bool is_dmic_dev = false;
410 bool is_sdw_dev = false;
411 bool wov_en, dmic_en;
412 int ret;
413
414 /* IF WOV entry not found, enable dmic based on acp-audio-device-type entry*/
415 wov_en = true;
416 dmic_en = false;
417
418 acp_hw_get_config(pci, adata: acp_data);
419
420 if (acp_data->is_pdm_config) {
421 pdm_dev = acpi_find_child_device(ACPI_COMPANION(&pci->dev), ACP63_DMIC_ADDR, check_children: 0);
422 if (pdm_dev) {
423 /* is_dmic_dev flag will be set when ACP PDM controller device exists */
424 if (!acpi_dev_get_property(adev: pdm_dev, name: "acp-audio-device-type",
425 ACPI_TYPE_INTEGER, obj: &obj) &&
426 obj->integer.value == ACP_DMIC_DEV)
427 dmic_en = true;
428 }
429
430 handle = ACPI_HANDLE(&pci->dev);
431 ret = acpi_evaluate_integer(handle, pathname: "_WOV", NULL, data: &dmic_status);
432 if (!ACPI_FAILURE(ret))
433 wov_en = dmic_status;
434 }
435
436 if (dmic_en && wov_en)
437 is_dmic_dev = true;
438
439 if (acp_data->is_sdw_config) {
440 ret = acp_scan_sdw_devices(dev: &pci->dev, ACP63_SDW_ADDR);
441 if (!ret && acp_data->info.link_mask)
442 is_sdw_dev = true;
443 }
444
445 acp_data->is_pdm_dev = is_dmic_dev;
446 acp_data->is_sdw_dev = is_sdw_dev;
447 if (!is_dmic_dev && !is_sdw_dev) {
448 dev_dbg(&pci->dev, "No PDM or SoundWire manager devices found\n");
449 return -ENODEV;
450 }
451 return 0;
452}
453
454static void acp63_fill_platform_dev_info(struct platform_device_info *pdevinfo,
455 struct device *parent,
456 struct fwnode_handle *fw_node,
457 char *name, unsigned int id,
458 const struct resource *res,
459 unsigned int num_res,
460 const void *data,
461 size_t size_data)
462{
463 pdevinfo->name = name;
464 pdevinfo->id = id;
465 pdevinfo->parent = parent;
466 pdevinfo->num_res = num_res;
467 pdevinfo->res = res;
468 pdevinfo->data = data;
469 pdevinfo->size_data = size_data;
470 pdevinfo->fwnode = fw_node;
471}
472
473static int create_acp63_platform_devs(struct pci_dev *pci, struct acp63_dev_data *adata, u32 addr)
474{
475 struct platform_device_info pdevinfo;
476 struct device *parent;
477 int ret;
478
479 parent = &pci->dev;
480
481 if (adata->is_sdw_dev || adata->is_pdm_dev) {
482 adata->res = devm_kzalloc(dev: &pci->dev, size: sizeof(struct resource), GFP_KERNEL);
483 if (!adata->res) {
484 ret = -ENOMEM;
485 goto de_init;
486 }
487 adata->res->flags = IORESOURCE_MEM;
488 adata->res->start = addr;
489 adata->res->end = addr + (ACP63_REG_END - ACP63_REG_START);
490 memset(&pdevinfo, 0, sizeof(pdevinfo));
491 }
492
493 if (adata->is_pdm_dev && adata->is_pdm_config) {
494 acp63_fill_platform_dev_info(pdevinfo: &pdevinfo, parent, NULL, name: "acp_ps_pdm_dma",
495 id: 0, res: adata->res, num_res: 1, NULL, size_data: 0);
496
497 adata->pdm_dev = platform_device_register_full(pdevinfo: &pdevinfo);
498 if (IS_ERR(ptr: adata->pdm_dev)) {
499 dev_err(&pci->dev,
500 "cannot register %s device\n", pdevinfo.name);
501 ret = PTR_ERR(ptr: adata->pdm_dev);
502 goto de_init;
503 }
504 memset(&pdevinfo, 0, sizeof(pdevinfo));
505 acp63_fill_platform_dev_info(pdevinfo: &pdevinfo, parent, NULL, name: "dmic-codec",
506 id: 0, NULL, num_res: 0, NULL, size_data: 0);
507 adata->dmic_codec_dev = platform_device_register_full(pdevinfo: &pdevinfo);
508 if (IS_ERR(ptr: adata->dmic_codec_dev)) {
509 dev_err(&pci->dev,
510 "cannot register %s device\n", pdevinfo.name);
511 ret = PTR_ERR(ptr: adata->dmic_codec_dev);
512 goto unregister_pdm_dev;
513 }
514 }
515 if (adata->is_sdw_dev && adata->is_sdw_config) {
516 ret = amd_sdw_probe(dev: &pci->dev);
517 if (ret) {
518 if (adata->is_pdm_dev)
519 goto unregister_dmic_codec_dev;
520 else
521 goto de_init;
522 }
523 memset(&pdevinfo, 0, sizeof(pdevinfo));
524 acp63_fill_platform_dev_info(pdevinfo: &pdevinfo, parent, NULL, name: "amd_ps_sdw_dma",
525 id: 0, res: adata->res, num_res: 1, NULL, size_data: 0);
526
527 adata->sdw_dma_dev = platform_device_register_full(pdevinfo: &pdevinfo);
528 if (IS_ERR(ptr: adata->sdw_dma_dev)) {
529 dev_err(&pci->dev,
530 "cannot register %s device\n", pdevinfo.name);
531 ret = PTR_ERR(ptr: adata->sdw_dma_dev);
532 if (adata->is_pdm_dev)
533 goto unregister_dmic_codec_dev;
534 else
535 goto de_init;
536 }
537 }
538
539 return 0;
540unregister_dmic_codec_dev:
541 platform_device_unregister(adata->dmic_codec_dev);
542unregister_pdm_dev:
543 platform_device_unregister(adata->pdm_dev);
544de_init:
545 if (acp_hw_deinit(adata, dev: &pci->dev))
546 dev_err(&pci->dev, "ACP de-init failed\n");
547 return ret;
548}
549
550static int acp_hw_init_ops(struct acp63_dev_data *adata, struct pci_dev *pci)
551{
552 adata->hw_ops = devm_kzalloc(dev: &pci->dev, size: sizeof(struct acp_hw_ops),
553 GFP_KERNEL);
554 if (!adata->hw_ops)
555 return -ENOMEM;
556
557 switch (adata->acp_rev) {
558 case ACP63_PCI_REV:
559 acp63_hw_init_ops(hw_ops: adata->hw_ops);
560 break;
561 case ACP70_PCI_REV:
562 case ACP71_PCI_REV:
563 case ACP72_PCI_REV:
564 acp70_hw_init_ops(hw_ops: adata->hw_ops);
565 break;
566 default:
567 dev_err(&pci->dev, "ACP device not found\n");
568 return -ENODEV;
569 }
570 return 0;
571}
572
573static int snd_acp63_probe(struct pci_dev *pci,
574 const struct pci_device_id *pci_id)
575{
576 struct acp63_dev_data *adata;
577 u32 addr;
578 u32 irqflags, flag;
579 int ret;
580
581 irqflags = IRQF_SHARED;
582
583 /* Return if acp config flag is defined */
584 flag = snd_amd_acp_find_config(pci);
585 if (flag)
586 return -ENODEV;
587
588 /* ACP PCI revision id check for ACP6.3, ACP7.0 & ACP7.1 platforms */
589 switch (pci->revision) {
590 case ACP63_PCI_REV:
591 case ACP70_PCI_REV:
592 case ACP71_PCI_REV:
593 case ACP72_PCI_REV:
594 break;
595 default:
596 dev_dbg(&pci->dev, "acp63/acp70/acp71 pci device not found\n");
597 return -ENODEV;
598 }
599 if (pci_enable_device(dev: pci)) {
600 dev_err(&pci->dev, "pci_enable_device failed\n");
601 return -ENODEV;
602 }
603
604 ret = pci_request_regions(pci, "AMD ACP6.2 audio");
605 if (ret < 0) {
606 dev_err(&pci->dev, "pci_request_regions failed\n");
607 goto disable_pci;
608 }
609 adata = devm_kzalloc(dev: &pci->dev, size: sizeof(struct acp63_dev_data),
610 GFP_KERNEL);
611 if (!adata) {
612 ret = -ENOMEM;
613 goto release_regions;
614 }
615
616 addr = pci_resource_start(pci, 0);
617 adata->acp63_base = devm_ioremap(dev: &pci->dev, offset: addr,
618 pci_resource_len(pci, 0));
619 if (!adata->acp63_base) {
620 ret = -ENOMEM;
621 goto release_regions;
622 }
623 adata->addr = addr;
624 adata->reg_range = ACP63_REG_END - ACP63_REG_START;
625 adata->acp_rev = pci->revision;
626 adata->subsystem_vendor = pci->subsystem_vendor;
627 adata->subsystem_device = pci->subsystem_device;
628
629 pci_set_master(dev: pci);
630 pci_set_drvdata(pdev: pci, data: adata);
631 mutex_init(&adata->acp_lock);
632 ret = acp_hw_init_ops(adata, pci);
633 if (ret) {
634 dev_err(&pci->dev, "ACP hw ops init failed\n");
635 goto release_regions;
636 }
637 ret = acp_hw_init(adata, dev: &pci->dev);
638 if (ret)
639 goto release_regions;
640 ret = devm_request_threaded_irq(dev: &pci->dev, irq: pci->irq, handler: acp63_irq_handler,
641 thread_fn: acp63_irq_thread, irqflags, devname: "ACP_PCI_IRQ", dev_id: adata);
642 if (ret) {
643 dev_err(&pci->dev, "ACP PCI IRQ request failed\n");
644 goto de_init;
645 }
646 ret = get_acp63_device_config(pci, acp_data: adata);
647 /* ACP PCI driver probe should be continued even PDM or SoundWire Devices are not found */
648 if (ret) {
649 dev_dbg(&pci->dev, "get acp device config failed:%d\n", ret);
650 goto skip_pdev_creation;
651 }
652 ret = create_acp63_platform_devs(pci, adata, addr);
653 if (ret < 0) {
654 dev_err(&pci->dev, "ACP platform devices creation failed\n");
655 goto de_init;
656 }
657 if (adata->acp_rev >= ACP70_PCI_REV)
658 adata->machines = snd_soc_acpi_amd_acp70_sdw_machines;
659 else
660 adata->machines = snd_soc_acpi_amd_acp63_sdw_machines;
661
662 ret = acp63_machine_register(dev: &pci->dev);
663 if (ret) {
664 dev_err(&pci->dev, "ACP machine register failed\n");
665 goto de_init;
666 }
667skip_pdev_creation:
668 device_set_wakeup_enable(dev: &pci->dev, enable: true);
669 pm_runtime_set_autosuspend_delay(dev: &pci->dev, ACP_SUSPEND_DELAY_MS);
670 pm_runtime_use_autosuspend(dev: &pci->dev);
671 pm_runtime_put_noidle(dev: &pci->dev);
672 pm_runtime_allow(dev: &pci->dev);
673 return 0;
674de_init:
675 if (acp_hw_deinit(adata, dev: &pci->dev))
676 dev_err(&pci->dev, "ACP de-init failed\n");
677release_regions:
678 pci_release_regions(pci);
679disable_pci:
680 pci_disable_device(dev: pci);
681
682 return ret;
683}
684
685static int snd_acp_suspend(struct device *dev)
686{
687 return acp_hw_suspend(dev);
688}
689
690static int snd_acp_runtime_resume(struct device *dev)
691{
692 return acp_hw_runtime_resume(dev);
693}
694
695static int snd_acp_resume(struct device *dev)
696{
697 return acp_hw_resume(dev);
698}
699
700static const struct dev_pm_ops acp63_pm_ops = {
701 RUNTIME_PM_OPS(snd_acp_suspend, snd_acp_runtime_resume, NULL)
702 SYSTEM_SLEEP_PM_OPS(snd_acp_suspend, snd_acp_resume)
703};
704
705static void snd_acp63_remove(struct pci_dev *pci)
706{
707 struct acp63_dev_data *adata;
708 int ret;
709
710 adata = pci_get_drvdata(pdev: pci);
711 if (adata->sdw) {
712 amd_sdw_exit(acp_data: adata);
713 platform_device_unregister(adata->sdw_dma_dev);
714 }
715 if (adata->is_pdm_dev) {
716 platform_device_unregister(adata->pdm_dev);
717 platform_device_unregister(adata->dmic_codec_dev);
718 }
719 if (adata->mach_dev)
720 platform_device_unregister(adata->mach_dev);
721 ret = acp_hw_deinit(adata, dev: &pci->dev);
722 if (ret)
723 dev_err(&pci->dev, "ACP de-init failed\n");
724 pm_runtime_forbid(dev: &pci->dev);
725 pm_runtime_get_noresume(dev: &pci->dev);
726 pci_release_regions(pci);
727 pci_disable_device(dev: pci);
728}
729
730static const struct pci_device_id snd_acp63_ids[] = {
731 { PCI_DEVICE(PCI_VENDOR_ID_AMD, ACP_DEVICE_ID),
732 .class = PCI_CLASS_MULTIMEDIA_OTHER << 8,
733 .class_mask = 0xffffff },
734 { 0, },
735};
736MODULE_DEVICE_TABLE(pci, snd_acp63_ids);
737
738static struct pci_driver ps_acp63_driver = {
739 .name = KBUILD_MODNAME,
740 .id_table = snd_acp63_ids,
741 .probe = snd_acp63_probe,
742 .remove = snd_acp63_remove,
743 .driver = {
744 .pm = pm_ptr(&acp63_pm_ops),
745 }
746};
747
748module_pci_driver(ps_acp63_driver);
749
750MODULE_AUTHOR("Vijendar.Mukunda@amd.com");
751MODULE_AUTHOR("Syed.SabaKareem@amd.com");
752MODULE_DESCRIPTION("AMD common ACP PCI driver for ACP6.3, ACP7.0 & ACP7.1 platforms");
753MODULE_IMPORT_NS("SOUNDWIRE_AMD_INIT");
754MODULE_IMPORT_NS("SND_AMD_SOUNDWIRE_ACPI");
755MODULE_LICENSE("GPL v2");
756

source code of linux/sound/soc/amd/ps/pci-ps.c