projects / linux-2.6-block.git / blame
? search:
summary | shortlog | log | commit | commitdiff | tree
blob | blame (incremental) | history | HEAD
ASoC: amd: Drop superfluous PCM preallocation error checks
[linux-2.6-block.git] / sound / soc / amd / raven / acp3x-pcm-dma.c
CommitLineData
d5a932e5
VM		 1// SPDX-License-Identifier: GPL-2.0+
2//
3// AMD ALSA SoC PCM Driver
4//
5//Copyright 2016 Advanced Micro Devices, Inc.
ac289c7e
VM		 6
7#include <linux/platform_device.h>
8#include <linux/module.h>
9#include <linux/err.h>
10#include <linux/io.h>
56e4dd8f 11#include <linux/pm_runtime.h>
ac289c7e
VM		 12#include <sound/pcm.h>
13#include <sound/pcm_params.h>
14#include <sound/soc.h>
15#include <sound/soc-dai.h>
16
17#include "acp3x.h"
18
19#define DRV_NAME "acp3x-i2s-audio"
20
21struct i2s_dev_data {
67aa06ae 22 bool tdm_mode;
32feac95 23 unsigned int i2s_irq;
67aa06ae 24 u32 tdm_fmt;
ac289c7e
VM		 25 void __iomem *acp3x_base;
26 struct snd_pcm_substream *play_stream;
27 struct snd_pcm_substream *capture_stream;
28};
29
0b87d6bc
VM		 30struct i2s_stream_instance {
31 u16 num_pages;
32 u16 channels;
33 u32 xfer_resolution;
34 struct page *pg;
35 void __iomem *acp3x_base;
36};
37
38static const struct snd_pcm_hardware acp3x_pcm_hardware_playback = {
39 .info = SNDRV_PCM_INFO_INTERLEAVED |
40 SNDRV_PCM_INFO_BLOCK_TRANSFER |
41 SNDRV_PCM_INFO_BATCH |
42 SNDRV_PCM_INFO_PAUSE | SNDRV_PCM_INFO_RESUME,
43 .formats = SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S8 |
44 SNDRV_PCM_FMTBIT_U8 | SNDRV_PCM_FMTBIT_S24_LE |
45 SNDRV_PCM_FMTBIT_S32_LE,
46 .channels_min = 2,
47 .channels_max = 8,
48 .rates = SNDRV_PCM_RATE_8000_96000,
49 .rate_min = 8000,
50 .rate_max = 96000,
51 .buffer_bytes_max = PLAYBACK_MAX_NUM_PERIODS * PLAYBACK_MAX_PERIOD_SIZE,
52 .period_bytes_min = PLAYBACK_MIN_PERIOD_SIZE,
53 .period_bytes_max = PLAYBACK_MAX_PERIOD_SIZE,
54 .periods_min = PLAYBACK_MIN_NUM_PERIODS,
55 .periods_max = PLAYBACK_MAX_NUM_PERIODS,
56};
57
58static const struct snd_pcm_hardware acp3x_pcm_hardware_capture = {
59 .info = SNDRV_PCM_INFO_INTERLEAVED |
60 SNDRV_PCM_INFO_BLOCK_TRANSFER |
61 SNDRV_PCM_INFO_BATCH |
62 SNDRV_PCM_INFO_PAUSE | SNDRV_PCM_INFO_RESUME,
63 .formats = SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S8 |
64 SNDRV_PCM_FMTBIT_U8 | SNDRV_PCM_FMTBIT_S24_LE |
65 SNDRV_PCM_FMTBIT_S32_LE,
66 .channels_min = 2,
67 .channels_max = 2,
68 .rates = SNDRV_PCM_RATE_8000_48000,
69 .rate_min = 8000,
70 .rate_max = 48000,
71 .buffer_bytes_max = CAPTURE_MAX_NUM_PERIODS * CAPTURE_MAX_PERIOD_SIZE,
72 .period_bytes_min = CAPTURE_MIN_PERIOD_SIZE,
73 .period_bytes_max = CAPTURE_MAX_PERIOD_SIZE,
74 .periods_min = CAPTURE_MIN_NUM_PERIODS,
75 .periods_max = CAPTURE_MAX_NUM_PERIODS,
76};
77
ac289c7e
VM		 78static int acp3x_power_on(void __iomem *acp3x_base, bool on)
79{
80 u16 val, mask;
81 u32 timeout;
82
83 if (on == true) {
84 val = 1;
85 mask = ACP3x_POWER_ON;
86 } else {
87 val = 0;
88 mask = ACP3x_POWER_OFF;
89 }
90
91 rv_writel(val, acp3x_base + mmACP_PGFSM_CONTROL);
92 timeout = 0;
93 while (true) {
94 val = rv_readl(acp3x_base + mmACP_PGFSM_STATUS);
95 if ((val & ACP3x_POWER_OFF_IN_PROGRESS) == mask)
96 break;
97 if (timeout > 100) {
98 pr_err("ACP3x power state change failure\n");
99 return -ENODEV;
100 }
101 timeout++;
102 cpu_relax();
103 }
104 return 0;
105}
106
107static int acp3x_reset(void __iomem *acp3x_base)
108{
109 u32 val, timeout;
110
111 rv_writel(1, acp3x_base + mmACP_SOFT_RESET);
112 timeout = 0;
113 while (true) {
114 val = rv_readl(acp3x_base + mmACP_SOFT_RESET);
115 if ((val & ACP3x_SOFT_RESET__SoftResetAudDone_MASK) ||
116 timeout > 100) {
117 if (val & ACP3x_SOFT_RESET__SoftResetAudDone_MASK)
118 break;
119 return -ENODEV;
120 }
121 timeout++;
122 cpu_relax();
123 }
124
125 rv_writel(0, acp3x_base + mmACP_SOFT_RESET);
126 timeout = 0;
127 while (true) {
128 val = rv_readl(acp3x_base + mmACP_SOFT_RESET);
129 if (!val || timeout > 100) {
130 if (!val)
131 break;
132 return -ENODEV;
133 }
134 timeout++;
135 cpu_relax();
136 }
137 return 0;
138}
139
140static int acp3x_init(void __iomem *acp3x_base)
141{
142 int ret;
143
144 /* power on */
145 ret = acp3x_power_on(acp3x_base, true);
146 if (ret) {
147 pr_err("ACP3x power on failed\n");
148 return ret;
149 }
150 /* Reset */
151 ret = acp3x_reset(acp3x_base);
152 if (ret) {
153 pr_err("ACP3x reset failed\n");
154 return ret;
155 }
156 return 0;
157}
158
159static int acp3x_deinit(void __iomem *acp3x_base)
160{
161 int ret;
162
163 /* Reset */
164 ret = acp3x_reset(acp3x_base);
165 if (ret) {
166 pr_err("ACP3x reset failed\n");
167 return ret;
168 }
169 /* power off */
170 ret = acp3x_power_on(acp3x_base, false);
171 if (ret) {
172 pr_err("ACP3x power off failed\n");
173 return ret;
174 }
175 return 0;
176}
177
32feac95
VM		 178static irqreturn_t i2s_irq_handler(int irq, void *dev_id)
179{
180 u16 play_flag, cap_flag;
181 u32 val;
182 struct i2s_dev_data *rv_i2s_data = dev_id;
183
184 if (!rv_i2s_data)
185 return IRQ_NONE;
186
187 play_flag = 0;
188 cap_flag = 0;
189 val = rv_readl(rv_i2s_data->acp3x_base + mmACP_EXTERNAL_INTR_STAT);
190 if ((val & BIT(BT_TX_THRESHOLD)) && rv_i2s_data->play_stream) {
191 rv_writel(BIT(BT_TX_THRESHOLD), rv_i2s_data->acp3x_base +
192 mmACP_EXTERNAL_INTR_STAT);
193 snd_pcm_period_elapsed(rv_i2s_data->play_stream);
194 play_flag = 1;
195 }
196
197 if ((val & BIT(BT_RX_THRESHOLD)) && rv_i2s_data->capture_stream) {
198 rv_writel(BIT(BT_RX_THRESHOLD), rv_i2s_data->acp3x_base +
199 mmACP_EXTERNAL_INTR_STAT);
200 snd_pcm_period_elapsed(rv_i2s_data->capture_stream);
201 cap_flag = 1;
202 }
203
204 if (play_flag | cap_flag)
205 return IRQ_HANDLED;
206 else
207 return IRQ_NONE;
208}
209
0b87d6bc
VM		 210static void config_acp3x_dma(struct i2s_stream_instance *rtd, int direction)
211{
212 u16 page_idx;
213 u64 addr;
214 u32 low, high, val, acp_fifo_addr;
215 struct page *pg = rtd->pg;
216
217 /* 8 scratch registers used to map one 64 bit address */
218 if (direction == SNDRV_PCM_STREAM_PLAYBACK)
219 val = 0;
220 else
221 val = rtd->num_pages * 8;
222
223 /* Group Enable */
224 rv_writel(ACP_SRAM_PTE_OFFSET | BIT(31), rtd->acp3x_base +
225 mmACPAXI2AXI_ATU_BASE_ADDR_GRP_1);
226 rv_writel(PAGE_SIZE_4K_ENABLE, rtd->acp3x_base +
227 mmACPAXI2AXI_ATU_PAGE_SIZE_GRP_1);
228
229 for (page_idx = 0; page_idx < rtd->num_pages; page_idx++) {
230 /* Load the low address of page int ACP SRAM through SRBM */
231 addr = page_to_phys(pg);
232 low = lower_32_bits(addr);
233 high = upper_32_bits(addr);
234
235 rv_writel(low, rtd->acp3x_base + mmACP_SCRATCH_REG_0 + val);
236 high |= BIT(31);
237 rv_writel(high, rtd->acp3x_base + mmACP_SCRATCH_REG_0 + val
238 + 4);
239 /* Move to next physically contiguos page */
240 val += 8;
241 pg++;
242 }
243
244 if (direction == SNDRV_PCM_STREAM_PLAYBACK) {
245 /* Config ringbuffer */
246 rv_writel(MEM_WINDOW_START, rtd->acp3x_base +
247 mmACP_BT_TX_RINGBUFADDR);
248 rv_writel(MAX_BUFFER, rtd->acp3x_base +
249 mmACP_BT_TX_RINGBUFSIZE);
250 rv_writel(DMA_SIZE, rtd->acp3x_base + mmACP_BT_TX_DMA_SIZE);
251
252 /* Config audio fifo */
253 acp_fifo_addr = ACP_SRAM_PTE_OFFSET + (rtd->num_pages * 8)
254 + PLAYBACK_FIFO_ADDR_OFFSET;
255 rv_writel(acp_fifo_addr, rtd->acp3x_base +
256 mmACP_BT_TX_FIFOADDR);
257 rv_writel(FIFO_SIZE, rtd->acp3x_base + mmACP_BT_TX_FIFOSIZE);
258 } else {
259 /* Config ringbuffer */
260 rv_writel(MEM_WINDOW_START + MAX_BUFFER, rtd->acp3x_base +
261 mmACP_BT_RX_RINGBUFADDR);
262 rv_writel(MAX_BUFFER, rtd->acp3x_base +
263 mmACP_BT_RX_RINGBUFSIZE);
264 rv_writel(DMA_SIZE, rtd->acp3x_base + mmACP_BT_RX_DMA_SIZE);
265
266 /* Config audio fifo */
267 acp_fifo_addr = ACP_SRAM_PTE_OFFSET +
268 (rtd->num_pages * 8) + CAPTURE_FIFO_ADDR_OFFSET;
269 rv_writel(acp_fifo_addr, rtd->acp3x_base +
270 mmACP_BT_RX_FIFOADDR);
271 rv_writel(FIFO_SIZE, rtd->acp3x_base + mmACP_BT_RX_FIFOSIZE);
272 }
273
274 /* Enable watermark/period interrupt to host */
275 rv_writel(BIT(BT_TX_THRESHOLD) | BIT(BT_RX_THRESHOLD),
276 rtd->acp3x_base + mmACP_EXTERNAL_INTR_CNTL);
277}
278
279static int acp3x_dma_open(struct snd_pcm_substream *substream)
280{
281 int ret = 0;
282
283 struct snd_pcm_runtime *runtime = substream->runtime;
284 struct snd_soc_pcm_runtime *prtd = substream->private_data;
285 struct snd_soc_component *component = snd_soc_rtdcom_lookup(prtd,
286 DRV_NAME);
287 struct i2s_dev_data *adata = dev_get_drvdata(component->dev);
288
289 struct i2s_stream_instance *i2s_data = kzalloc(sizeof(struct i2s_stream_instance),
290 GFP_KERNEL);
291 if (!i2s_data)
292 return -EINVAL;
293
294 if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
295 runtime->hw = acp3x_pcm_hardware_playback;
296 else
297 runtime->hw = acp3x_pcm_hardware_capture;
298
299 ret = snd_pcm_hw_constraint_integer(runtime,
300 SNDRV_PCM_HW_PARAM_PERIODS);
301 if (ret < 0) {
302 dev_err(component->dev, "set integer constraint failed\n");
46dce404 303 kfree(i2s_data);
0b87d6bc
VM		 304 return ret;
305 }
306
307 if (!adata->play_stream && !adata->capture_stream)
308 rv_writel(1, adata->acp3x_base + mmACP_EXTERNAL_INTR_ENB);
309
310 if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
311 adata->play_stream = substream;
312 else
313 adata->capture_stream = substream;
314
315 i2s_data->acp3x_base = adata->acp3x_base;
316 runtime->private_data = i2s_data;
317 return 0;
318}
319
320static int acp3x_dma_hw_params(struct snd_pcm_substream *substream,
321 struct snd_pcm_hw_params *params)
322{
323 int status;
324 u64 size;
0b87d6bc
VM		 325 struct page *pg;
326 struct snd_pcm_runtime *runtime = substream->runtime;
327 struct i2s_stream_instance *rtd = runtime->private_data;
328
329 if (!rtd)
330 return -EINVAL;
331
0b87d6bc
VM		 332 size = params_buffer_bytes(params);
333 status = snd_pcm_lib_malloc_pages(substream, size);
334 if (status < 0)
335 return status;
336
337 memset(substream->runtime->dma_area, 0, params_buffer_bytes(params));
338 pg = virt_to_page(substream->dma_buffer.area);
339 if (pg) {
340 rtd->pg = pg;
341 rtd->num_pages = (PAGE_ALIGN(size) >> PAGE_SHIFT);
342 config_acp3x_dma(rtd, substream->stream);
343 status = 0;
344 } else {
345 status = -ENOMEM;
346 }
347 return status;
348}
349
350static snd_pcm_uframes_t acp3x_dma_pointer(struct snd_pcm_substream *substream)
351{
352 u32 pos = 0;
353 struct i2s_stream_instance *rtd = substream->runtime->private_data;
354
355 if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
356 pos = rv_readl(rtd->acp3x_base +
357 mmACP_BT_TX_LINKPOSITIONCNTR);
358 else
359 pos = rv_readl(rtd->acp3x_base +
360 mmACP_BT_RX_LINKPOSITIONCNTR);
361
362 if (pos >= MAX_BUFFER)
363 pos = 0;
364
365 return bytes_to_frames(substream->runtime, pos);
366}
367
368static int acp3x_dma_new(struct snd_soc_pcm_runtime *rtd)
369{
f6aa470f
TI		 370 snd_pcm_lib_preallocate_pages_for_all(rtd->pcm, SNDRV_DMA_TYPE_DEV,
371 rtd->pcm->card->dev,
372 MIN_BUFFER, MAX_BUFFER);
373 return 0;
0b87d6bc
VM		 374}
375
376static int acp3x_dma_hw_free(struct snd_pcm_substream *substream)
377{
378 return snd_pcm_lib_free_pages(substream);
379}
380
381static int acp3x_dma_mmap(struct snd_pcm_substream *substream,
382 struct vm_area_struct *vma)
383{
384 return snd_pcm_lib_default_mmap(substream, vma);
385}
386
387static int acp3x_dma_close(struct snd_pcm_substream *substream)
388{
389 struct snd_soc_pcm_runtime *prtd = substream->private_data;
390 struct i2s_stream_instance *rtd = substream->runtime->private_data;
391 struct snd_soc_component *component = snd_soc_rtdcom_lookup(prtd,
392 DRV_NAME);
393 struct i2s_dev_data *adata = dev_get_drvdata(component->dev);
394
395 if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
396 adata->play_stream = NULL;
397 else
398 adata->capture_stream = NULL;
399
400 /* Disable ACP irq, when the current stream is being closed and
401 * another stream is also not active.
402 */
403 if (!adata->play_stream && !adata->capture_stream)
404 rv_writel(0, adata->acp3x_base + mmACP_EXTERNAL_INTR_ENB);
405 kfree(rtd);
406 return 0;
407}
408
ac289c7e 409static struct snd_pcm_ops acp3x_dma_ops = {
0b87d6bc
VM		 410 .open = acp3x_dma_open,
411 .close = acp3x_dma_close,
412 .ioctl = snd_pcm_lib_ioctl,
413 .hw_params = acp3x_dma_hw_params,
414 .hw_free = acp3x_dma_hw_free,
415 .pointer = acp3x_dma_pointer,
416 .mmap = acp3x_dma_mmap,
ac289c7e
VM		 417};
418
67aa06ae
VM		 419
420static int acp3x_dai_i2s_set_fmt(struct snd_soc_dai *cpu_dai, unsigned int fmt)
421{
422
423 struct i2s_dev_data *adata = snd_soc_dai_get_drvdata(cpu_dai);
424
425 switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
426 case SND_SOC_DAIFMT_I2S:
427 adata->tdm_mode = false;
428 break;
429 case SND_SOC_DAIFMT_DSP_A:
430 adata->tdm_mode = true;
431 break;
432 default:
433 return -EINVAL;
434 }
435
436 return 0;
437}
438
439static int acp3x_dai_set_tdm_slot(struct snd_soc_dai *cpu_dai, u32 tx_mask,
440 u32 rx_mask, int slots, int slot_width)
441{
442 u32 val = 0;
443 u16 slot_len;
444
445 struct i2s_dev_data *adata = snd_soc_dai_get_drvdata(cpu_dai);
446
447 switch (slot_width) {
448 case SLOT_WIDTH_8:
449 slot_len = 8;
450 break;
451 case SLOT_WIDTH_16:
452 slot_len = 16;
453 break;
454 case SLOT_WIDTH_24:
455 slot_len = 24;
456 break;
457 case SLOT_WIDTH_32:
458 slot_len = 0;
459 break;
460 default:
461 return -EINVAL;
462 }
463
464 val = rv_readl(adata->acp3x_base + mmACP_BTTDM_ITER);
465 rv_writel((val | 0x2), adata->acp3x_base + mmACP_BTTDM_ITER);
466 val = rv_readl(adata->acp3x_base + mmACP_BTTDM_IRER);
467 rv_writel((val | 0x2), adata->acp3x_base + mmACP_BTTDM_IRER);
468
469 val = (FRM_LEN | (slots << 15) | (slot_len << 18));
470 rv_writel(val, adata->acp3x_base + mmACP_BTTDM_TXFRMT);
471 rv_writel(val, adata->acp3x_base + mmACP_BTTDM_RXFRMT);
472
473 adata->tdm_fmt = val;
474 return 0;
475}
476
2b5f290e
VM		 477static int acp3x_dai_i2s_hwparams(struct snd_pcm_substream *substream,
478 struct snd_pcm_hw_params *params,
479 struct snd_soc_dai *dai)
480{
481 u32 val = 0;
482 struct i2s_stream_instance *rtd = substream->runtime->private_data;
483
484 switch (params_format(params)) {
485 case SNDRV_PCM_FORMAT_U8:
486 case SNDRV_PCM_FORMAT_S8:
487 rtd->xfer_resolution = 0x0;
488 break;
489 case SNDRV_PCM_FORMAT_S16_LE:
490 rtd->xfer_resolution = 0x02;
491 break;
492 case SNDRV_PCM_FORMAT_S24_LE:
493 rtd->xfer_resolution = 0x04;
494 break;
495 case SNDRV_PCM_FORMAT_S32_LE:
496 rtd->xfer_resolution = 0x05;
497 break;
498 default:
499 return -EINVAL;
500 }
501 val = rv_readl(rtd->acp3x_base + mmACP_BTTDM_ITER);
502 val = val | (rtd->xfer_resolution << 3);
503 if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
504 rv_writel(val, rtd->acp3x_base + mmACP_BTTDM_ITER);
505 else
506 rv_writel(val, rtd->acp3x_base + mmACP_BTTDM_IRER);
507
508 return 0;
509}
510
511static int acp3x_dai_i2s_trigger(struct snd_pcm_substream *substream,
512 int cmd, struct snd_soc_dai *dai)
513{
514 int ret = 0;
515 struct i2s_stream_instance *rtd = substream->runtime->private_data;
516 u32 val, period_bytes;
517
518 period_bytes = frames_to_bytes(substream->runtime,
519 substream->runtime->period_size);
520 switch (cmd) {
521 case SNDRV_PCM_TRIGGER_START:
522 case SNDRV_PCM_TRIGGER_RESUME:
523 case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
524 if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
525 rv_writel(period_bytes, rtd->acp3x_base +
526 mmACP_BT_TX_INTR_WATERMARK_SIZE);
527 val = rv_readl(rtd->acp3x_base + mmACP_BTTDM_ITER);
528 val = val | BIT(0);
529 rv_writel(val, rtd->acp3x_base + mmACP_BTTDM_ITER);
530 } else {
531 rv_writel(period_bytes, rtd->acp3x_base +
532 mmACP_BT_RX_INTR_WATERMARK_SIZE);
533 val = rv_readl(rtd->acp3x_base + mmACP_BTTDM_IRER);
534 val = val | BIT(0);
535 rv_writel(val, rtd->acp3x_base + mmACP_BTTDM_IRER);
536 }
537 rv_writel(1, rtd->acp3x_base + mmACP_BTTDM_IER);
538 break;
539 case SNDRV_PCM_TRIGGER_STOP:
540 case SNDRV_PCM_TRIGGER_SUSPEND:
541 case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
542 if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
543 val = rv_readl(rtd->acp3x_base + mmACP_BTTDM_ITER);
544 val = val & ~BIT(0);
545 rv_writel(val, rtd->acp3x_base + mmACP_BTTDM_ITER);
546 } else {
547 val = rv_readl(rtd->acp3x_base + mmACP_BTTDM_IRER);
548 val = val & ~BIT(0);
549 rv_writel(val, rtd->acp3x_base + mmACP_BTTDM_IRER);
550 }
551 rv_writel(0, rtd->acp3x_base + mmACP_BTTDM_IER);
552 break;
553 default:
554 ret = -EINVAL;
555 break;
556 }
557
558 return ret;
559}
560
ac289c7e 561struct snd_soc_dai_ops acp3x_dai_i2s_ops = {
2b5f290e
VM		 562 .hw_params = acp3x_dai_i2s_hwparams,
563 .trigger = acp3x_dai_i2s_trigger,
67aa06ae
VM		 564 .set_fmt = acp3x_dai_i2s_set_fmt,
565 .set_tdm_slot = acp3x_dai_set_tdm_slot,
ac289c7e
VM		 566};
567
568static struct snd_soc_dai_driver acp3x_i2s_dai_driver = {
569 .playback = {
570 .rates = SNDRV_PCM_RATE_8000_96000,
571 .formats = SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S8 |
572 SNDRV_PCM_FMTBIT_U8 |
573 SNDRV_PCM_FMTBIT_S24_LE |
574 SNDRV_PCM_FMTBIT_S32_LE,
575 .channels_min = 2,
576 .channels_max = 8,
577
578 .rate_min = 8000,
579 .rate_max = 96000,
580 },
581 .capture = {
582 .rates = SNDRV_PCM_RATE_8000_48000,
583 .formats = SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S8 |
584 SNDRV_PCM_FMTBIT_U8 |
585 SNDRV_PCM_FMTBIT_S24_LE |
586 SNDRV_PCM_FMTBIT_S32_LE,
587 .channels_min = 2,
588 .channels_max = 2,
589 .rate_min = 8000,
590 .rate_max = 48000,
591 },
592 .ops = &acp3x_dai_i2s_ops,
593};
594
595static const struct snd_soc_component_driver acp3x_i2s_component = {
596 .name = DRV_NAME,
597 .ops = &acp3x_dma_ops,
598 .pcm_new = acp3x_dma_new,
599};
600
601static int acp3x_audio_probe(struct platform_device *pdev)
602{
603 int status;
604 struct resource *res;
605 struct i2s_dev_data *adata;
606 unsigned int irqflags;
607
608 if (!pdev->dev.platform_data) {
609 dev_err(&pdev->dev, "platform_data not retrieved\n");
610 return -ENODEV;
611 }
612 irqflags = *((unsigned int *)(pdev->dev.platform_data));
613
ac289c7e
VM		 614 res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
615 if (!res) {
616 dev_err(&pdev->dev, "IORESOURCE_IRQ FAILED\n");
617 return -ENODEV;
618 }
619
4cb79ef9
GS		 620 adata = devm_kzalloc(&pdev->dev, sizeof(*adata), GFP_KERNEL);
621 if (!adata)
622 return -ENOMEM;
623
ac289c7e
VM		 624 adata->acp3x_base = devm_ioremap(&pdev->dev, res->start,
625 resource_size(res));
626
32feac95
VM		 627 res = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
628 if (!res) {
629 dev_err(&pdev->dev, "IORESOURCE_IRQ FAILED\n");
630 return -ENODEV;
631 }
632
633 adata->i2s_irq = res->start;
ac289c7e
VM		 634 adata->play_stream = NULL;
635 adata->capture_stream = NULL;
636
637 dev_set_drvdata(&pdev->dev, adata);
638 /* Initialize ACP */
639 status = acp3x_init(adata->acp3x_base);
640 if (status)
641 return -ENODEV;
642 status = devm_snd_soc_register_component(&pdev->dev,
643 &acp3x_i2s_component,
644 &acp3x_i2s_dai_driver, 1);
645 if (status) {
646 dev_err(&pdev->dev, "Fail to register acp i2s dai\n");
647 goto dev_err;
648 }
32feac95
VM		 649 status = devm_request_irq(&pdev->dev, adata->i2s_irq, i2s_irq_handler,
650 irqflags, "ACP3x_I2S_IRQ", adata);
651 if (status) {
652 dev_err(&pdev->dev, "ACP3x I2S IRQ request failed\n");
653 goto dev_err;
654 }
ac289c7e 655
56e4dd8f
VM		 656 pm_runtime_set_autosuspend_delay(&pdev->dev, 10000);
657 pm_runtime_use_autosuspend(&pdev->dev);
658 pm_runtime_enable(&pdev->dev);
ac289c7e
VM		 659 return 0;
660dev_err:
661 status = acp3x_deinit(adata->acp3x_base);
662 if (status)
663 dev_err(&pdev->dev, "ACP de-init failed\n");
664 else
665 dev_info(&pdev->dev, "ACP de-initialized\n");
666 /*ignore device status and return driver probe error*/
667 return -ENODEV;
668}
669
670static int acp3x_audio_remove(struct platform_device *pdev)
671{
672 int ret;
673 struct i2s_dev_data *adata = dev_get_drvdata(&pdev->dev);
674
675 ret = acp3x_deinit(adata->acp3x_base);
676 if (ret)
677 dev_err(&pdev->dev, "ACP de-init failed\n");
678 else
679 dev_info(&pdev->dev, "ACP de-initialized\n");
680
56e4dd8f 681 pm_runtime_disable(&pdev->dev);
ac289c7e
VM		 682 return 0;
683}
684
8de1b5ed
VM		 685static int acp3x_resume(struct device *dev)
686{
687 int status;
688 u32 val;
689 struct i2s_dev_data *adata = dev_get_drvdata(dev);
690
691 status = acp3x_init(adata->acp3x_base);
692 if (status)
693 return -ENODEV;
694
695 if (adata->play_stream && adata->play_stream->runtime) {
696 struct i2s_stream_instance *rtd =
697 adata->play_stream->runtime->private_data;
698 config_acp3x_dma(rtd, SNDRV_PCM_STREAM_PLAYBACK);
699 rv_writel((rtd->xfer_resolution << 3),
700 rtd->acp3x_base + mmACP_BTTDM_ITER);
701 if (adata->tdm_mode == true) {
702 rv_writel(adata->tdm_fmt, adata->acp3x_base +
703 mmACP_BTTDM_TXFRMT);
704 val = rv_readl(adata->acp3x_base + mmACP_BTTDM_ITER);
705 rv_writel((val | 0x2), adata->acp3x_base +
706 mmACP_BTTDM_ITER);
707 }
708 }
709
710 if (adata->capture_stream && adata->capture_stream->runtime) {
711 struct i2s_stream_instance *rtd =
712 adata->capture_stream->runtime->private_data;
713 config_acp3x_dma(rtd, SNDRV_PCM_STREAM_CAPTURE);
714 rv_writel((rtd->xfer_resolution << 3),
715 rtd->acp3x_base + mmACP_BTTDM_IRER);
716 if (adata->tdm_mode == true) {
717 rv_writel(adata->tdm_fmt, adata->acp3x_base +
718 mmACP_BTTDM_RXFRMT);
719 val = rv_readl(adata->acp3x_base + mmACP_BTTDM_IRER);
720 rv_writel((val | 0x2), adata->acp3x_base +
721 mmACP_BTTDM_IRER);
722 }
723 }
724
725 rv_writel(1, adata->acp3x_base + mmACP_EXTERNAL_INTR_ENB);
726 return 0;
727}
728
729
56e4dd8f
VM		 730static int acp3x_pcm_runtime_suspend(struct device *dev)
731{
732 int status;
733 struct i2s_dev_data *adata = dev_get_drvdata(dev);
734
735 status = acp3x_deinit(adata->acp3x_base);
736 if (status)
737 dev_err(dev, "ACP de-init failed\n");
738 else
739 dev_info(dev, "ACP de-initialized\n");
740
741 rv_writel(0, adata->acp3x_base + mmACP_EXTERNAL_INTR_ENB);
742
743 return 0;
744}
745
746static int acp3x_pcm_runtime_resume(struct device *dev)
747{
748 int status;
749 struct i2s_dev_data *adata = dev_get_drvdata(dev);
750
751 status = acp3x_init(adata->acp3x_base);
752 if (status)
753 return -ENODEV;
754 rv_writel(1, adata->acp3x_base + mmACP_EXTERNAL_INTR_ENB);
755 return 0;
756}
757
758static const struct dev_pm_ops acp3x_pm_ops = {
759 .runtime_suspend = acp3x_pcm_runtime_suspend,
760 .runtime_resume = acp3x_pcm_runtime_resume,
8de1b5ed 761 .resume = acp3x_resume,
56e4dd8f
VM		 762};
763
ac289c7e
VM		 764static struct platform_driver acp3x_dma_driver = {
765 .probe = acp3x_audio_probe,
766 .remove = acp3x_audio_remove,
767 .driver = {
768 .name = "acp3x_rv_i2s",
56e4dd8f 769 .pm = &acp3x_pm_ops,
ac289c7e
VM		 770 },
771};
772
773module_platform_driver(acp3x_dma_driver);
774
775MODULE_AUTHOR("Maruthi.Bayyavarapu@amd.com");
776MODULE_AUTHOR("Vijendar.Mukunda@amd.com");
777MODULE_DESCRIPTION("AMD ACP 3.x PCM Driver");
778MODULE_LICENSE("GPL v2");
779MODULE_ALIAS("platform:" DRV_NAME);
Linux 6.x block layer and io_uring tree(s)