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16#include <linux/types.h>
17#include <linux/platform_device.h>
18#include <linux/io.h>
19#include <linux/slab.h>
20#include <linux/module.h>
21#include <linux/interrupt.h>
22#include <linux/pm_runtime.h>
23#include <linux/dma-mapping.h>
24#include <linux/delay.h>
25#include <sound/core.h>
26#include <sound/asoundef.h>
27#include <sound/pcm.h>
28#include <sound/pcm_params.h>
29#include <sound/initval.h>
30#include <sound/control.h>
31#include <sound/jack.h>
32#include <drm/drm_edid.h>
33#include <drm/intel_lpe_audio.h>
34#include "intel_hdmi_audio.h"
35
36#define for_each_pipe(card_ctx, pipe) \
37 for ((pipe) = 0; (pipe) < (card_ctx)->num_pipes; (pipe)++)
38#define for_each_port(card_ctx, port) \
39 for ((port) = 0; (port) < (card_ctx)->num_ports; (port)++)
40
41
42static int hdmi_card_index = SNDRV_DEFAULT_IDX1;
43static char *hdmi_card_id = SNDRV_DEFAULT_STR1;
44static bool single_port;
45
46module_param_named(index, hdmi_card_index, int, 0444);
47MODULE_PARM_DESC(index,
48 "Index value for INTEL Intel HDMI Audio controller.");
49module_param_named(id, hdmi_card_id, charp, 0444);
50MODULE_PARM_DESC(id,
51 "ID string for INTEL Intel HDMI Audio controller.");
52module_param(single_port, bool, 0444);
53MODULE_PARM_DESC(single_port,
54 "Single-port mode (for compatibility)");
55
56
57
58
59static const int eld_speaker_allocation_bits[] = {
60 [0] = FL | FR,
61 [1] = LFE,
62 [2] = FC,
63 [3] = RL | RR,
64 [4] = RC,
65 [5] = FLC | FRC,
66 [6] = RLC | RRC,
67
68 [7] = 0,
69};
70
71
72
73
74
75
76
77static struct cea_channel_speaker_allocation channel_allocations[] = {
78
79{ .ca_index = 0x00, .speakers = { 0, 0, 0, 0, 0, 0, FR, FL } },
80
81{ .ca_index = 0x01, .speakers = { 0, 0, 0, 0, 0, LFE, FR, FL } },
82
83{ .ca_index = 0x02, .speakers = { 0, 0, 0, 0, FC, 0, FR, FL } },
84
85{ .ca_index = 0x08, .speakers = { 0, 0, RR, RL, 0, 0, FR, FL } },
86
87{ .ca_index = 0x09, .speakers = { 0, 0, RR, RL, 0, LFE, FR, FL } },
88
89{ .ca_index = 0x0a, .speakers = { 0, 0, RR, RL, FC, 0, FR, FL } },
90
91{ .ca_index = 0x0b, .speakers = { 0, 0, RR, RL, FC, LFE, FR, FL } },
92
93{ .ca_index = 0x0f, .speakers = { 0, RC, RR, RL, FC, LFE, FR, FL } },
94
95{ .ca_index = 0x13, .speakers = { RRC, RLC, RR, RL, FC, LFE, FR, FL } },
96
97{ .ca_index = 0x03, .speakers = { 0, 0, 0, 0, FC, LFE, FR, FL } },
98{ .ca_index = 0x04, .speakers = { 0, 0, 0, RC, 0, 0, FR, FL } },
99{ .ca_index = 0x05, .speakers = { 0, 0, 0, RC, 0, LFE, FR, FL } },
100{ .ca_index = 0x06, .speakers = { 0, 0, 0, RC, FC, 0, FR, FL } },
101{ .ca_index = 0x07, .speakers = { 0, 0, 0, RC, FC, LFE, FR, FL } },
102{ .ca_index = 0x0c, .speakers = { 0, RC, RR, RL, 0, 0, FR, FL } },
103{ .ca_index = 0x0d, .speakers = { 0, RC, RR, RL, 0, LFE, FR, FL } },
104{ .ca_index = 0x0e, .speakers = { 0, RC, RR, RL, FC, 0, FR, FL } },
105{ .ca_index = 0x10, .speakers = { RRC, RLC, RR, RL, 0, 0, FR, FL } },
106{ .ca_index = 0x11, .speakers = { RRC, RLC, RR, RL, 0, LFE, FR, FL } },
107{ .ca_index = 0x12, .speakers = { RRC, RLC, RR, RL, FC, 0, FR, FL } },
108{ .ca_index = 0x14, .speakers = { FRC, FLC, 0, 0, 0, 0, FR, FL } },
109{ .ca_index = 0x15, .speakers = { FRC, FLC, 0, 0, 0, LFE, FR, FL } },
110{ .ca_index = 0x16, .speakers = { FRC, FLC, 0, 0, FC, 0, FR, FL } },
111{ .ca_index = 0x17, .speakers = { FRC, FLC, 0, 0, FC, LFE, FR, FL } },
112{ .ca_index = 0x18, .speakers = { FRC, FLC, 0, RC, 0, 0, FR, FL } },
113{ .ca_index = 0x19, .speakers = { FRC, FLC, 0, RC, 0, LFE, FR, FL } },
114{ .ca_index = 0x1a, .speakers = { FRC, FLC, 0, RC, FC, 0, FR, FL } },
115{ .ca_index = 0x1b, .speakers = { FRC, FLC, 0, RC, FC, LFE, FR, FL } },
116{ .ca_index = 0x1c, .speakers = { FRC, FLC, RR, RL, 0, 0, FR, FL } },
117{ .ca_index = 0x1d, .speakers = { FRC, FLC, RR, RL, 0, LFE, FR, FL } },
118{ .ca_index = 0x1e, .speakers = { FRC, FLC, RR, RL, FC, 0, FR, FL } },
119{ .ca_index = 0x1f, .speakers = { FRC, FLC, RR, RL, FC, LFE, FR, FL } },
120};
121
122static const struct channel_map_table map_tables[] = {
123 { SNDRV_CHMAP_FL, 0x00, FL },
124 { SNDRV_CHMAP_FR, 0x01, FR },
125 { SNDRV_CHMAP_RL, 0x04, RL },
126 { SNDRV_CHMAP_RR, 0x05, RR },
127 { SNDRV_CHMAP_LFE, 0x02, LFE },
128 { SNDRV_CHMAP_FC, 0x03, FC },
129 { SNDRV_CHMAP_RLC, 0x06, RLC },
130 { SNDRV_CHMAP_RRC, 0x07, RRC },
131 {}
132};
133
134
135static const struct snd_pcm_hardware had_pcm_hardware = {
136 .info = (SNDRV_PCM_INFO_INTERLEAVED |
137 SNDRV_PCM_INFO_MMAP |
138 SNDRV_PCM_INFO_MMAP_VALID |
139 SNDRV_PCM_INFO_NO_PERIOD_WAKEUP),
140 .formats = (SNDRV_PCM_FMTBIT_S16_LE |
141 SNDRV_PCM_FMTBIT_S24_LE |
142 SNDRV_PCM_FMTBIT_S32_LE),
143 .rates = SNDRV_PCM_RATE_32000 |
144 SNDRV_PCM_RATE_44100 |
145 SNDRV_PCM_RATE_48000 |
146 SNDRV_PCM_RATE_88200 |
147 SNDRV_PCM_RATE_96000 |
148 SNDRV_PCM_RATE_176400 |
149 SNDRV_PCM_RATE_192000,
150 .rate_min = HAD_MIN_RATE,
151 .rate_max = HAD_MAX_RATE,
152 .channels_min = HAD_MIN_CHANNEL,
153 .channels_max = HAD_MAX_CHANNEL,
154 .buffer_bytes_max = HAD_MAX_BUFFER,
155 .period_bytes_min = HAD_MIN_PERIOD_BYTES,
156 .period_bytes_max = HAD_MAX_PERIOD_BYTES,
157 .periods_min = HAD_MIN_PERIODS,
158 .periods_max = HAD_MAX_PERIODS,
159 .fifo_size = HAD_FIFO_SIZE,
160};
161
162
163
164
165
166static struct snd_pcm_substream *
167had_substream_get(struct snd_intelhad *intelhaddata)
168{
169 struct snd_pcm_substream *substream;
170 unsigned long flags;
171
172 spin_lock_irqsave(&intelhaddata->had_spinlock, flags);
173 substream = intelhaddata->stream_info.substream;
174 if (substream)
175 intelhaddata->stream_info.substream_refcount++;
176 spin_unlock_irqrestore(&intelhaddata->had_spinlock, flags);
177 return substream;
178}
179
180
181
182
183static void had_substream_put(struct snd_intelhad *intelhaddata)
184{
185 unsigned long flags;
186
187 spin_lock_irqsave(&intelhaddata->had_spinlock, flags);
188 intelhaddata->stream_info.substream_refcount--;
189 spin_unlock_irqrestore(&intelhaddata->had_spinlock, flags);
190}
191
192static u32 had_config_offset(int pipe)
193{
194 switch (pipe) {
195 default:
196 case 0:
197 return AUDIO_HDMI_CONFIG_A;
198 case 1:
199 return AUDIO_HDMI_CONFIG_B;
200 case 2:
201 return AUDIO_HDMI_CONFIG_C;
202 }
203}
204
205
206static u32 had_read_register_raw(struct snd_intelhad_card *card_ctx,
207 int pipe, u32 reg)
208{
209 return ioread32(card_ctx->mmio_start + had_config_offset(pipe) + reg);
210}
211
212static void had_write_register_raw(struct snd_intelhad_card *card_ctx,
213 int pipe, u32 reg, u32 val)
214{
215 iowrite32(val, card_ctx->mmio_start + had_config_offset(pipe) + reg);
216}
217
218static void had_read_register(struct snd_intelhad *ctx, u32 reg, u32 *val)
219{
220 if (!ctx->connected)
221 *val = 0;
222 else
223 *val = had_read_register_raw(ctx->card_ctx, ctx->pipe, reg);
224}
225
226static void had_write_register(struct snd_intelhad *ctx, u32 reg, u32 val)
227{
228 if (ctx->connected)
229 had_write_register_raw(ctx->card_ctx, ctx->pipe, reg, val);
230}
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247static void had_enable_audio(struct snd_intelhad *intelhaddata,
248 bool enable)
249{
250
251 intelhaddata->aud_config.regx.aud_en = enable;
252 had_write_register(intelhaddata, AUD_CONFIG,
253 intelhaddata->aud_config.regval);
254}
255
256
257static void had_ack_irqs(struct snd_intelhad *ctx)
258{
259 u32 status_reg;
260
261 if (!ctx->connected)
262 return;
263 had_read_register(ctx, AUD_HDMI_STATUS, &status_reg);
264 status_reg |= HDMI_AUDIO_BUFFER_DONE | HDMI_AUDIO_UNDERRUN;
265 had_write_register(ctx, AUD_HDMI_STATUS, status_reg);
266 had_read_register(ctx, AUD_HDMI_STATUS, &status_reg);
267}
268
269
270static void had_reset_audio(struct snd_intelhad *intelhaddata)
271{
272 had_write_register(intelhaddata, AUD_HDMI_STATUS,
273 AUD_HDMI_STATUSG_MASK_FUNCRST);
274 had_write_register(intelhaddata, AUD_HDMI_STATUS, 0);
275}
276
277
278
279
280
281static int had_prog_status_reg(struct snd_pcm_substream *substream,
282 struct snd_intelhad *intelhaddata)
283{
284 union aud_ch_status_0 ch_stat0 = {.regval = 0};
285 union aud_ch_status_1 ch_stat1 = {.regval = 0};
286
287 ch_stat0.regx.lpcm_id = (intelhaddata->aes_bits &
288 IEC958_AES0_NONAUDIO) >> 1;
289 ch_stat0.regx.clk_acc = (intelhaddata->aes_bits &
290 IEC958_AES3_CON_CLOCK) >> 4;
291
292 switch (substream->runtime->rate) {
293 case AUD_SAMPLE_RATE_32:
294 ch_stat0.regx.samp_freq = CH_STATUS_MAP_32KHZ;
295 break;
296
297 case AUD_SAMPLE_RATE_44_1:
298 ch_stat0.regx.samp_freq = CH_STATUS_MAP_44KHZ;
299 break;
300 case AUD_SAMPLE_RATE_48:
301 ch_stat0.regx.samp_freq = CH_STATUS_MAP_48KHZ;
302 break;
303 case AUD_SAMPLE_RATE_88_2:
304 ch_stat0.regx.samp_freq = CH_STATUS_MAP_88KHZ;
305 break;
306 case AUD_SAMPLE_RATE_96:
307 ch_stat0.regx.samp_freq = CH_STATUS_MAP_96KHZ;
308 break;
309 case AUD_SAMPLE_RATE_176_4:
310 ch_stat0.regx.samp_freq = CH_STATUS_MAP_176KHZ;
311 break;
312 case AUD_SAMPLE_RATE_192:
313 ch_stat0.regx.samp_freq = CH_STATUS_MAP_192KHZ;
314 break;
315
316 default:
317
318 return -EINVAL;
319 }
320
321 had_write_register(intelhaddata,
322 AUD_CH_STATUS_0, ch_stat0.regval);
323
324 switch (substream->runtime->format) {
325 case SNDRV_PCM_FORMAT_S16_LE:
326 ch_stat1.regx.max_wrd_len = MAX_SMPL_WIDTH_20;
327 ch_stat1.regx.wrd_len = SMPL_WIDTH_16BITS;
328 break;
329 case SNDRV_PCM_FORMAT_S24_LE:
330 case SNDRV_PCM_FORMAT_S32_LE:
331 ch_stat1.regx.max_wrd_len = MAX_SMPL_WIDTH_24;
332 ch_stat1.regx.wrd_len = SMPL_WIDTH_24BITS;
333 break;
334 default:
335 return -EINVAL;
336 }
337
338 had_write_register(intelhaddata,
339 AUD_CH_STATUS_1, ch_stat1.regval);
340 return 0;
341}
342
343
344
345
346
347
348static int had_init_audio_ctrl(struct snd_pcm_substream *substream,
349 struct snd_intelhad *intelhaddata)
350{
351 union aud_cfg cfg_val = {.regval = 0};
352 union aud_buf_config buf_cfg = {.regval = 0};
353 u8 channels;
354
355 had_prog_status_reg(substream, intelhaddata);
356
357 buf_cfg.regx.audio_fifo_watermark = FIFO_THRESHOLD;
358 buf_cfg.regx.dma_fifo_watermark = DMA_FIFO_THRESHOLD;
359 buf_cfg.regx.aud_delay = 0;
360 had_write_register(intelhaddata, AUD_BUF_CONFIG, buf_cfg.regval);
361
362 channels = substream->runtime->channels;
363 cfg_val.regx.num_ch = channels - 2;
364 if (channels <= 2)
365 cfg_val.regx.layout = LAYOUT0;
366 else
367 cfg_val.regx.layout = LAYOUT1;
368
369 if (substream->runtime->format == SNDRV_PCM_FORMAT_S16_LE)
370 cfg_val.regx.packet_mode = 1;
371
372 if (substream->runtime->format == SNDRV_PCM_FORMAT_S32_LE)
373 cfg_val.regx.left_align = 1;
374
375 cfg_val.regx.val_bit = 1;
376
377
378 if (intelhaddata->dp_output) {
379 cfg_val.regx.dp_modei = 1;
380 cfg_val.regx.set = 1;
381 }
382
383 had_write_register(intelhaddata, AUD_CONFIG, cfg_val.regval);
384 intelhaddata->aud_config = cfg_val;
385 return 0;
386}
387
388
389
390
391static void init_channel_allocations(void)
392{
393 int i, j;
394 struct cea_channel_speaker_allocation *p;
395
396 for (i = 0; i < ARRAY_SIZE(channel_allocations); i++) {
397 p = channel_allocations + i;
398 p->channels = 0;
399 p->spk_mask = 0;
400 for (j = 0; j < ARRAY_SIZE(p->speakers); j++)
401 if (p->speakers[j]) {
402 p->channels++;
403 p->spk_mask |= p->speakers[j];
404 }
405 }
406}
407
408
409
410
411
412
413
414
415
416static int had_channel_allocation(struct snd_intelhad *intelhaddata,
417 int channels)
418{
419 int i;
420 int ca = 0;
421 int spk_mask = 0;
422
423
424
425
426 if (channels <= 2)
427 return 0;
428
429
430
431
432
433
434
435
436 for (i = 0; i < ARRAY_SIZE(eld_speaker_allocation_bits); i++) {
437 if (intelhaddata->eld[DRM_ELD_SPEAKER] & (1 << i))
438 spk_mask |= eld_speaker_allocation_bits[i];
439 }
440
441
442 for (i = 0; i < ARRAY_SIZE(channel_allocations); i++) {
443 if (channels == channel_allocations[i].channels &&
444 (spk_mask & channel_allocations[i].spk_mask) ==
445 channel_allocations[i].spk_mask) {
446 ca = channel_allocations[i].ca_index;
447 break;
448 }
449 }
450
451 dev_dbg(intelhaddata->dev, "select CA 0x%x for %d\n", ca, channels);
452
453 return ca;
454}
455
456
457static int spk_to_chmap(int spk)
458{
459 const struct channel_map_table *t = map_tables;
460
461 for (; t->map; t++) {
462 if (t->spk_mask == spk)
463 return t->map;
464 }
465 return 0;
466}
467
468static void had_build_channel_allocation_map(struct snd_intelhad *intelhaddata)
469{
470 int i, c;
471 int spk_mask = 0;
472 struct snd_pcm_chmap_elem *chmap;
473 u8 eld_high, eld_high_mask = 0xF0;
474 u8 high_msb;
475
476 kfree(intelhaddata->chmap->chmap);
477 intelhaddata->chmap->chmap = NULL;
478
479 chmap = kzalloc(sizeof(*chmap), GFP_KERNEL);
480 if (!chmap)
481 return;
482
483 dev_dbg(intelhaddata->dev, "eld speaker = %x\n",
484 intelhaddata->eld[DRM_ELD_SPEAKER]);
485
486
487
488
489
490
491
492
493
494
495 eld_high = intelhaddata->eld[DRM_ELD_SPEAKER] & eld_high_mask;
496 if ((eld_high & (eld_high-1)) && (eld_high > 0x1F)) {
497
498
499 for (i = 1; i < 4; i++) {
500 high_msb = eld_high & (0x80 >> i);
501 if (high_msb) {
502 intelhaddata->eld[DRM_ELD_SPEAKER] &=
503 high_msb | 0xF;
504 break;
505 }
506 }
507 }
508
509 for (i = 0; i < ARRAY_SIZE(eld_speaker_allocation_bits); i++) {
510 if (intelhaddata->eld[DRM_ELD_SPEAKER] & (1 << i))
511 spk_mask |= eld_speaker_allocation_bits[i];
512 }
513
514 for (i = 0; i < ARRAY_SIZE(channel_allocations); i++) {
515 if (spk_mask == channel_allocations[i].spk_mask) {
516 for (c = 0; c < channel_allocations[i].channels; c++) {
517 chmap->map[c] = spk_to_chmap(
518 channel_allocations[i].speakers[
519 (MAX_SPEAKERS - 1) - c]);
520 }
521 chmap->channels = channel_allocations[i].channels;
522 intelhaddata->chmap->chmap = chmap;
523 break;
524 }
525 }
526 if (i >= ARRAY_SIZE(channel_allocations))
527 kfree(chmap);
528}
529
530
531
532
533static int had_chmap_ctl_info(struct snd_kcontrol *kcontrol,
534 struct snd_ctl_elem_info *uinfo)
535{
536 uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
537 uinfo->count = HAD_MAX_CHANNEL;
538 uinfo->value.integer.min = 0;
539 uinfo->value.integer.max = SNDRV_CHMAP_LAST;
540 return 0;
541}
542
543static int had_chmap_ctl_get(struct snd_kcontrol *kcontrol,
544 struct snd_ctl_elem_value *ucontrol)
545{
546 struct snd_pcm_chmap *info = snd_kcontrol_chip(kcontrol);
547 struct snd_intelhad *intelhaddata = info->private_data;
548 int i;
549 const struct snd_pcm_chmap_elem *chmap;
550
551 memset(ucontrol->value.integer.value, 0,
552 sizeof(long) * HAD_MAX_CHANNEL);
553 mutex_lock(&intelhaddata->mutex);
554 if (!intelhaddata->chmap->chmap) {
555 mutex_unlock(&intelhaddata->mutex);
556 return 0;
557 }
558
559 chmap = intelhaddata->chmap->chmap;
560 for (i = 0; i < chmap->channels; i++)
561 ucontrol->value.integer.value[i] = chmap->map[i];
562 mutex_unlock(&intelhaddata->mutex);
563
564 return 0;
565}
566
567static int had_register_chmap_ctls(struct snd_intelhad *intelhaddata,
568 struct snd_pcm *pcm)
569{
570 int err;
571
572 err = snd_pcm_add_chmap_ctls(pcm, SNDRV_PCM_STREAM_PLAYBACK,
573 NULL, 0, (unsigned long)intelhaddata,
574 &intelhaddata->chmap);
575 if (err < 0)
576 return err;
577
578 intelhaddata->chmap->private_data = intelhaddata;
579 intelhaddata->chmap->kctl->info = had_chmap_ctl_info;
580 intelhaddata->chmap->kctl->get = had_chmap_ctl_get;
581 intelhaddata->chmap->chmap = NULL;
582 return 0;
583}
584
585
586
587
588
589static void had_prog_dip(struct snd_pcm_substream *substream,
590 struct snd_intelhad *intelhaddata)
591{
592 int i;
593 union aud_ctrl_st ctrl_state = {.regval = 0};
594 union aud_info_frame2 frame2 = {.regval = 0};
595 union aud_info_frame3 frame3 = {.regval = 0};
596 u8 checksum = 0;
597 u32 info_frame;
598 int channels;
599 int ca;
600
601 channels = substream->runtime->channels;
602
603 had_write_register(intelhaddata, AUD_CNTL_ST, ctrl_state.regval);
604
605 ca = had_channel_allocation(intelhaddata, channels);
606 if (intelhaddata->dp_output) {
607 info_frame = DP_INFO_FRAME_WORD1;
608 frame2.regval = (substream->runtime->channels - 1) | (ca << 24);
609 } else {
610 info_frame = HDMI_INFO_FRAME_WORD1;
611 frame2.regx.chnl_cnt = substream->runtime->channels - 1;
612 frame3.regx.chnl_alloc = ca;
613
614
615 for (i = 0; i < BYTES_PER_WORD; i++)
616 checksum += (info_frame >> (i * 8)) & 0xff;
617 for (i = 0; i < BYTES_PER_WORD; i++)
618 checksum += (frame2.regval >> (i * 8)) & 0xff;
619 for (i = 0; i < BYTES_PER_WORD; i++)
620 checksum += (frame3.regval >> (i * 8)) & 0xff;
621
622 frame2.regx.chksum = -(checksum);
623 }
624
625 had_write_register(intelhaddata, AUD_HDMIW_INFOFR, info_frame);
626 had_write_register(intelhaddata, AUD_HDMIW_INFOFR, frame2.regval);
627 had_write_register(intelhaddata, AUD_HDMIW_INFOFR, frame3.regval);
628
629
630 for (i = 0; i < HAD_MAX_DIP_WORDS-VALID_DIP_WORDS; i++)
631 had_write_register(intelhaddata, AUD_HDMIW_INFOFR, 0x0);
632
633 ctrl_state.regx.dip_freq = 1;
634 ctrl_state.regx.dip_en_sta = 1;
635 had_write_register(intelhaddata, AUD_CNTL_ST, ctrl_state.regval);
636}
637
638static int had_calculate_maud_value(u32 aud_samp_freq, u32 link_rate)
639{
640 u32 maud_val;
641
642
643 if (link_rate == DP_2_7_GHZ) {
644 switch (aud_samp_freq) {
645 case AUD_SAMPLE_RATE_32:
646 maud_val = AUD_SAMPLE_RATE_32_DP_2_7_MAUD_VAL;
647 break;
648
649 case AUD_SAMPLE_RATE_44_1:
650 maud_val = AUD_SAMPLE_RATE_44_1_DP_2_7_MAUD_VAL;
651 break;
652
653 case AUD_SAMPLE_RATE_48:
654 maud_val = AUD_SAMPLE_RATE_48_DP_2_7_MAUD_VAL;
655 break;
656
657 case AUD_SAMPLE_RATE_88_2:
658 maud_val = AUD_SAMPLE_RATE_88_2_DP_2_7_MAUD_VAL;
659 break;
660
661 case AUD_SAMPLE_RATE_96:
662 maud_val = AUD_SAMPLE_RATE_96_DP_2_7_MAUD_VAL;
663 break;
664
665 case AUD_SAMPLE_RATE_176_4:
666 maud_val = AUD_SAMPLE_RATE_176_4_DP_2_7_MAUD_VAL;
667 break;
668
669 case HAD_MAX_RATE:
670 maud_val = HAD_MAX_RATE_DP_2_7_MAUD_VAL;
671 break;
672
673 default:
674 maud_val = -EINVAL;
675 break;
676 }
677 } else if (link_rate == DP_1_62_GHZ) {
678 switch (aud_samp_freq) {
679 case AUD_SAMPLE_RATE_32:
680 maud_val = AUD_SAMPLE_RATE_32_DP_1_62_MAUD_VAL;
681 break;
682
683 case AUD_SAMPLE_RATE_44_1:
684 maud_val = AUD_SAMPLE_RATE_44_1_DP_1_62_MAUD_VAL;
685 break;
686
687 case AUD_SAMPLE_RATE_48:
688 maud_val = AUD_SAMPLE_RATE_48_DP_1_62_MAUD_VAL;
689 break;
690
691 case AUD_SAMPLE_RATE_88_2:
692 maud_val = AUD_SAMPLE_RATE_88_2_DP_1_62_MAUD_VAL;
693 break;
694
695 case AUD_SAMPLE_RATE_96:
696 maud_val = AUD_SAMPLE_RATE_96_DP_1_62_MAUD_VAL;
697 break;
698
699 case AUD_SAMPLE_RATE_176_4:
700 maud_val = AUD_SAMPLE_RATE_176_4_DP_1_62_MAUD_VAL;
701 break;
702
703 case HAD_MAX_RATE:
704 maud_val = HAD_MAX_RATE_DP_1_62_MAUD_VAL;
705 break;
706
707 default:
708 maud_val = -EINVAL;
709 break;
710 }
711 } else
712 maud_val = -EINVAL;
713
714 return maud_val;
715}
716
717
718
719
720
721
722
723
724
725
726
727
728static void had_prog_cts(u32 aud_samp_freq, u32 tmds, u32 link_rate,
729 u32 n_param, struct snd_intelhad *intelhaddata)
730{
731 u32 cts_val;
732 u64 dividend, divisor;
733
734 if (intelhaddata->dp_output) {
735
736 cts_val = had_calculate_maud_value(aud_samp_freq, link_rate);
737 } else {
738
739 dividend = (u64)tmds * n_param*1000;
740 divisor = 128 * aud_samp_freq;
741 cts_val = div64_u64(dividend, divisor);
742 }
743 dev_dbg(intelhaddata->dev, "TMDS value=%d, N value=%d, CTS Value=%d\n",
744 tmds, n_param, cts_val);
745 had_write_register(intelhaddata, AUD_HDMI_CTS, (BIT(24) | cts_val));
746}
747
748static int had_calculate_n_value(u32 aud_samp_freq)
749{
750 int n_val;
751
752
753 switch (aud_samp_freq) {
754 case AUD_SAMPLE_RATE_32:
755 n_val = 4096;
756 break;
757
758 case AUD_SAMPLE_RATE_44_1:
759 n_val = 6272;
760 break;
761
762 case AUD_SAMPLE_RATE_48:
763 n_val = 6144;
764 break;
765
766 case AUD_SAMPLE_RATE_88_2:
767 n_val = 12544;
768 break;
769
770 case AUD_SAMPLE_RATE_96:
771 n_val = 12288;
772 break;
773
774 case AUD_SAMPLE_RATE_176_4:
775 n_val = 25088;
776 break;
777
778 case HAD_MAX_RATE:
779 n_val = 24576;
780 break;
781
782 default:
783 n_val = -EINVAL;
784 break;
785 }
786 return n_val;
787}
788
789
790
791
792
793
794
795
796
797
798
799static int had_prog_n(u32 aud_samp_freq, u32 *n_param,
800 struct snd_intelhad *intelhaddata)
801{
802 int n_val;
803
804 if (intelhaddata->dp_output) {
805
806
807
808
809
810
811
812
813 n_val = DP_NAUD_VAL;
814 } else
815 n_val = had_calculate_n_value(aud_samp_freq);
816
817 if (n_val < 0)
818 return n_val;
819
820 had_write_register(intelhaddata, AUD_N_ENABLE, (BIT(24) | n_val));
821 *n_param = n_val;
822 return 0;
823}
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865#define AUD_BUF_ADDR(x) (AUD_BUF_A_ADDR + (x) * HAD_REG_WIDTH)
866#define AUD_BUF_LEN(x) (AUD_BUF_A_LENGTH + (x) * HAD_REG_WIDTH)
867
868
869static void had_prog_bd(struct snd_pcm_substream *substream,
870 struct snd_intelhad *intelhaddata)
871{
872 int idx = intelhaddata->bd_head;
873 int ofs = intelhaddata->pcmbuf_filled * intelhaddata->period_bytes;
874 u32 addr = substream->runtime->dma_addr + ofs;
875
876 addr |= AUD_BUF_VALID;
877 if (!substream->runtime->no_period_wakeup)
878 addr |= AUD_BUF_INTR_EN;
879 had_write_register(intelhaddata, AUD_BUF_ADDR(idx), addr);
880 had_write_register(intelhaddata, AUD_BUF_LEN(idx),
881 intelhaddata->period_bytes);
882
883
884 intelhaddata->bd_head++;
885 intelhaddata->bd_head %= intelhaddata->num_bds;
886 intelhaddata->pcmbuf_filled++;
887 intelhaddata->pcmbuf_filled %= substream->runtime->periods;
888}
889
890
891static void had_invalidate_bd(struct snd_intelhad *intelhaddata,
892 int idx)
893{
894 had_write_register(intelhaddata, AUD_BUF_ADDR(idx), 0);
895 had_write_register(intelhaddata, AUD_BUF_LEN(idx), 0);
896}
897
898
899static void had_init_ringbuf(struct snd_pcm_substream *substream,
900 struct snd_intelhad *intelhaddata)
901{
902 struct snd_pcm_runtime *runtime = substream->runtime;
903 int i, num_periods;
904
905 num_periods = runtime->periods;
906 intelhaddata->num_bds = min(num_periods, HAD_NUM_OF_RING_BUFS);
907
908 intelhaddata->num_bds = max(intelhaddata->num_bds, 2U);
909 intelhaddata->period_bytes =
910 frames_to_bytes(runtime, runtime->period_size);
911 WARN_ON(intelhaddata->period_bytes & 0x3f);
912
913 intelhaddata->bd_head = 0;
914 intelhaddata->pcmbuf_head = 0;
915 intelhaddata->pcmbuf_filled = 0;
916
917 for (i = 0; i < HAD_NUM_OF_RING_BUFS; i++) {
918 if (i < intelhaddata->num_bds)
919 had_prog_bd(substream, intelhaddata);
920 else
921 had_invalidate_bd(intelhaddata, i);
922 }
923
924 intelhaddata->bd_head = 0;
925}
926
927
928static void had_advance_ringbuf(struct snd_pcm_substream *substream,
929 struct snd_intelhad *intelhaddata)
930{
931 int num_periods = substream->runtime->periods;
932
933
934 had_prog_bd(substream, intelhaddata);
935
936
937 intelhaddata->pcmbuf_head++;
938 intelhaddata->pcmbuf_head %= num_periods;
939}
940
941
942
943
944static int had_process_ringbuf(struct snd_pcm_substream *substream,
945 struct snd_intelhad *intelhaddata)
946{
947 int len, processed;
948 unsigned long flags;
949
950 processed = 0;
951 spin_lock_irqsave(&intelhaddata->had_spinlock, flags);
952 for (;;) {
953
954 had_read_register(intelhaddata,
955 AUD_BUF_LEN(intelhaddata->bd_head),
956 &len);
957 if (len < 0 || len > intelhaddata->period_bytes) {
958 dev_dbg(intelhaddata->dev, "Invalid buf length %d\n",
959 len);
960 len = -EPIPE;
961 goto out;
962 }
963
964 if (len > 0)
965 break;
966
967
968 if (++processed >= intelhaddata->num_bds) {
969 len = -EPIPE;
970 goto out;
971 }
972 had_advance_ringbuf(substream, intelhaddata);
973 }
974
975 len = intelhaddata->period_bytes - len;
976 len += intelhaddata->period_bytes * intelhaddata->pcmbuf_head;
977 out:
978 spin_unlock_irqrestore(&intelhaddata->had_spinlock, flags);
979 return len;
980}
981
982
983static void had_process_buffer_done(struct snd_intelhad *intelhaddata)
984{
985 struct snd_pcm_substream *substream;
986
987 substream = had_substream_get(intelhaddata);
988 if (!substream)
989 return;
990
991 if (!intelhaddata->connected) {
992 snd_pcm_stop_xrun(substream);
993 goto out;
994 }
995
996
997 if (had_process_ringbuf(substream, intelhaddata) < 0)
998 snd_pcm_stop_xrun(substream);
999 else
1000 snd_pcm_period_elapsed(substream);
1001
1002 out:
1003 had_substream_put(intelhaddata);
1004}
1005
1006
1007
1008
1009
1010static void wait_clear_underrun_bit(struct snd_intelhad *intelhaddata)
1011{
1012 int i;
1013 u32 val;
1014
1015 for (i = 0; i < 100; i++) {
1016
1017 had_read_register(intelhaddata, AUD_HDMI_STATUS, &val);
1018 if (!(val & AUD_HDMI_STATUS_MASK_UNDERRUN))
1019 return;
1020 udelay(100);
1021 cond_resched();
1022 had_write_register(intelhaddata, AUD_HDMI_STATUS, val);
1023 }
1024 dev_err(intelhaddata->dev, "Unable to clear UNDERRUN bits\n");
1025}
1026
1027
1028
1029
1030
1031static void had_do_reset(struct snd_intelhad *intelhaddata)
1032{
1033 if (!intelhaddata->need_reset || !intelhaddata->connected)
1034 return;
1035
1036
1037 had_reset_audio(intelhaddata);
1038 wait_clear_underrun_bit(intelhaddata);
1039 intelhaddata->need_reset = false;
1040}
1041
1042
1043static void had_process_buffer_underrun(struct snd_intelhad *intelhaddata)
1044{
1045 struct snd_pcm_substream *substream;
1046
1047
1048 substream = had_substream_get(intelhaddata);
1049 if (substream) {
1050 snd_pcm_stop_xrun(substream);
1051 had_substream_put(intelhaddata);
1052 }
1053 intelhaddata->need_reset = true;
1054}
1055
1056
1057
1058
1059static int had_pcm_open(struct snd_pcm_substream *substream)
1060{
1061 struct snd_intelhad *intelhaddata;
1062 struct snd_pcm_runtime *runtime;
1063 int retval;
1064
1065 intelhaddata = snd_pcm_substream_chip(substream);
1066 runtime = substream->runtime;
1067
1068 pm_runtime_get_sync(intelhaddata->dev);
1069
1070
1071 runtime->hw = had_pcm_hardware;
1072
1073 retval = snd_pcm_hw_constraint_integer(runtime,
1074 SNDRV_PCM_HW_PARAM_PERIODS);
1075 if (retval < 0)
1076 goto error;
1077
1078
1079
1080
1081 retval = snd_pcm_hw_constraint_step(substream->runtime, 0,
1082 SNDRV_PCM_HW_PARAM_PERIOD_BYTES, 64);
1083 if (retval < 0)
1084 goto error;
1085
1086 retval = snd_pcm_hw_constraint_msbits(runtime, 0, 32, 24);
1087 if (retval < 0)
1088 goto error;
1089
1090
1091 spin_lock_irq(&intelhaddata->had_spinlock);
1092 intelhaddata->stream_info.substream = substream;
1093 intelhaddata->stream_info.substream_refcount++;
1094 spin_unlock_irq(&intelhaddata->had_spinlock);
1095
1096 return retval;
1097 error:
1098 pm_runtime_mark_last_busy(intelhaddata->dev);
1099 pm_runtime_put_autosuspend(intelhaddata->dev);
1100 return retval;
1101}
1102
1103
1104
1105
1106static int had_pcm_close(struct snd_pcm_substream *substream)
1107{
1108 struct snd_intelhad *intelhaddata;
1109
1110 intelhaddata = snd_pcm_substream_chip(substream);
1111
1112
1113 spin_lock_irq(&intelhaddata->had_spinlock);
1114 intelhaddata->stream_info.substream = NULL;
1115 intelhaddata->stream_info.substream_refcount--;
1116 while (intelhaddata->stream_info.substream_refcount > 0) {
1117 spin_unlock_irq(&intelhaddata->had_spinlock);
1118 cpu_relax();
1119 spin_lock_irq(&intelhaddata->had_spinlock);
1120 }
1121 spin_unlock_irq(&intelhaddata->had_spinlock);
1122
1123 pm_runtime_mark_last_busy(intelhaddata->dev);
1124 pm_runtime_put_autosuspend(intelhaddata->dev);
1125 return 0;
1126}
1127
1128
1129
1130
1131static int had_pcm_hw_params(struct snd_pcm_substream *substream,
1132 struct snd_pcm_hw_params *hw_params)
1133{
1134 struct snd_intelhad *intelhaddata;
1135 int buf_size;
1136
1137 intelhaddata = snd_pcm_substream_chip(substream);
1138 buf_size = params_buffer_bytes(hw_params);
1139 dev_dbg(intelhaddata->dev, "%s:allocated memory = %d\n",
1140 __func__, buf_size);
1141 return 0;
1142}
1143
1144
1145
1146
1147static int had_pcm_hw_free(struct snd_pcm_substream *substream)
1148{
1149 struct snd_intelhad *intelhaddata;
1150
1151 intelhaddata = snd_pcm_substream_chip(substream);
1152 had_do_reset(intelhaddata);
1153
1154 return 0;
1155}
1156
1157
1158
1159
1160static int had_pcm_trigger(struct snd_pcm_substream *substream, int cmd)
1161{
1162 int retval = 0;
1163 struct snd_intelhad *intelhaddata;
1164
1165 intelhaddata = snd_pcm_substream_chip(substream);
1166
1167 spin_lock(&intelhaddata->had_spinlock);
1168 switch (cmd) {
1169 case SNDRV_PCM_TRIGGER_START:
1170 case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
1171 case SNDRV_PCM_TRIGGER_RESUME:
1172
1173 had_ack_irqs(intelhaddata);
1174 had_enable_audio(intelhaddata, true);
1175 break;
1176
1177 case SNDRV_PCM_TRIGGER_STOP:
1178 case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
1179
1180 had_enable_audio(intelhaddata, false);
1181 intelhaddata->need_reset = true;
1182 break;
1183
1184 default:
1185 retval = -EINVAL;
1186 }
1187 spin_unlock(&intelhaddata->had_spinlock);
1188 return retval;
1189}
1190
1191
1192
1193
1194static int had_pcm_prepare(struct snd_pcm_substream *substream)
1195{
1196 int retval;
1197 u32 disp_samp_freq, n_param;
1198 u32 link_rate = 0;
1199 struct snd_intelhad *intelhaddata;
1200 struct snd_pcm_runtime *runtime;
1201
1202 intelhaddata = snd_pcm_substream_chip(substream);
1203 runtime = substream->runtime;
1204
1205 dev_dbg(intelhaddata->dev, "period_size=%d\n",
1206 (int)frames_to_bytes(runtime, runtime->period_size));
1207 dev_dbg(intelhaddata->dev, "periods=%d\n", runtime->periods);
1208 dev_dbg(intelhaddata->dev, "buffer_size=%d\n",
1209 (int)snd_pcm_lib_buffer_bytes(substream));
1210 dev_dbg(intelhaddata->dev, "rate=%d\n", runtime->rate);
1211 dev_dbg(intelhaddata->dev, "channels=%d\n", runtime->channels);
1212
1213 had_do_reset(intelhaddata);
1214
1215
1216 disp_samp_freq = intelhaddata->tmds_clock_speed;
1217
1218 retval = had_prog_n(substream->runtime->rate, &n_param, intelhaddata);
1219 if (retval) {
1220 dev_err(intelhaddata->dev,
1221 "programming N value failed %#x\n", retval);
1222 goto prep_end;
1223 }
1224
1225 if (intelhaddata->dp_output)
1226 link_rate = intelhaddata->link_rate;
1227
1228 had_prog_cts(substream->runtime->rate, disp_samp_freq, link_rate,
1229 n_param, intelhaddata);
1230
1231 had_prog_dip(substream, intelhaddata);
1232
1233 retval = had_init_audio_ctrl(substream, intelhaddata);
1234
1235
1236 had_init_ringbuf(substream, intelhaddata);
1237
1238
1239
1240
1241
1242
1243 had_write_register(intelhaddata, AUD_BUF_CH_SWAP, SWAP_LFE_CENTER);
1244
1245prep_end:
1246 return retval;
1247}
1248
1249
1250
1251
1252static snd_pcm_uframes_t had_pcm_pointer(struct snd_pcm_substream *substream)
1253{
1254 struct snd_intelhad *intelhaddata;
1255 int len;
1256
1257 intelhaddata = snd_pcm_substream_chip(substream);
1258
1259 if (!intelhaddata->connected)
1260 return SNDRV_PCM_POS_XRUN;
1261
1262 len = had_process_ringbuf(substream, intelhaddata);
1263 if (len < 0)
1264 return SNDRV_PCM_POS_XRUN;
1265 len = bytes_to_frames(substream->runtime, len);
1266
1267 len %= substream->runtime->buffer_size;
1268 return len;
1269}
1270
1271
1272
1273
1274static int had_pcm_mmap(struct snd_pcm_substream *substream,
1275 struct vm_area_struct *vma)
1276{
1277 vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot);
1278 return remap_pfn_range(vma, vma->vm_start,
1279 substream->dma_buffer.addr >> PAGE_SHIFT,
1280 vma->vm_end - vma->vm_start, vma->vm_page_prot);
1281}
1282
1283
1284
1285
1286static const struct snd_pcm_ops had_pcm_ops = {
1287 .open = had_pcm_open,
1288 .close = had_pcm_close,
1289 .hw_params = had_pcm_hw_params,
1290 .hw_free = had_pcm_hw_free,
1291 .prepare = had_pcm_prepare,
1292 .trigger = had_pcm_trigger,
1293 .pointer = had_pcm_pointer,
1294 .mmap = had_pcm_mmap,
1295};
1296
1297
1298static int had_process_mode_change(struct snd_intelhad *intelhaddata)
1299{
1300 struct snd_pcm_substream *substream;
1301 int retval = 0;
1302 u32 disp_samp_freq, n_param;
1303 u32 link_rate = 0;
1304
1305 substream = had_substream_get(intelhaddata);
1306 if (!substream)
1307 return 0;
1308
1309
1310 had_enable_audio(intelhaddata, false);
1311
1312
1313 disp_samp_freq = intelhaddata->tmds_clock_speed;
1314
1315 retval = had_prog_n(substream->runtime->rate, &n_param, intelhaddata);
1316 if (retval) {
1317 dev_err(intelhaddata->dev,
1318 "programming N value failed %#x\n", retval);
1319 goto out;
1320 }
1321
1322 if (intelhaddata->dp_output)
1323 link_rate = intelhaddata->link_rate;
1324
1325 had_prog_cts(substream->runtime->rate, disp_samp_freq, link_rate,
1326 n_param, intelhaddata);
1327
1328
1329 had_enable_audio(intelhaddata, true);
1330
1331out:
1332 had_substream_put(intelhaddata);
1333 return retval;
1334}
1335
1336
1337static void had_process_hot_plug(struct snd_intelhad *intelhaddata)
1338{
1339 struct snd_pcm_substream *substream;
1340
1341 spin_lock_irq(&intelhaddata->had_spinlock);
1342 if (intelhaddata->connected) {
1343 dev_dbg(intelhaddata->dev, "Device already connected\n");
1344 spin_unlock_irq(&intelhaddata->had_spinlock);
1345 return;
1346 }
1347
1348
1349 had_enable_audio(intelhaddata, false);
1350
1351 intelhaddata->connected = true;
1352 dev_dbg(intelhaddata->dev,
1353 "%s @ %d:DEBUG PLUG/UNPLUG : HAD_DRV_CONNECTED\n",
1354 __func__, __LINE__);
1355 spin_unlock_irq(&intelhaddata->had_spinlock);
1356
1357 had_build_channel_allocation_map(intelhaddata);
1358
1359
1360 substream = had_substream_get(intelhaddata);
1361 if (substream) {
1362 snd_pcm_stop_xrun(substream);
1363 had_substream_put(intelhaddata);
1364 }
1365
1366 snd_jack_report(intelhaddata->jack, SND_JACK_AVOUT);
1367}
1368
1369
1370static void had_process_hot_unplug(struct snd_intelhad *intelhaddata)
1371{
1372 struct snd_pcm_substream *substream;
1373
1374 spin_lock_irq(&intelhaddata->had_spinlock);
1375 if (!intelhaddata->connected) {
1376 dev_dbg(intelhaddata->dev, "Device already disconnected\n");
1377 spin_unlock_irq(&intelhaddata->had_spinlock);
1378 return;
1379
1380 }
1381
1382
1383 had_enable_audio(intelhaddata, false);
1384
1385 intelhaddata->connected = false;
1386 dev_dbg(intelhaddata->dev,
1387 "%s @ %d:DEBUG PLUG/UNPLUG : HAD_DRV_DISCONNECTED\n",
1388 __func__, __LINE__);
1389 spin_unlock_irq(&intelhaddata->had_spinlock);
1390
1391 kfree(intelhaddata->chmap->chmap);
1392 intelhaddata->chmap->chmap = NULL;
1393
1394
1395 substream = had_substream_get(intelhaddata);
1396 if (substream) {
1397 snd_pcm_stop_xrun(substream);
1398 had_substream_put(intelhaddata);
1399 }
1400
1401 snd_jack_report(intelhaddata->jack, 0);
1402}
1403
1404
1405
1406
1407
1408static int had_iec958_info(struct snd_kcontrol *kcontrol,
1409 struct snd_ctl_elem_info *uinfo)
1410{
1411 uinfo->type = SNDRV_CTL_ELEM_TYPE_IEC958;
1412 uinfo->count = 1;
1413 return 0;
1414}
1415
1416static int had_iec958_get(struct snd_kcontrol *kcontrol,
1417 struct snd_ctl_elem_value *ucontrol)
1418{
1419 struct snd_intelhad *intelhaddata = snd_kcontrol_chip(kcontrol);
1420
1421 mutex_lock(&intelhaddata->mutex);
1422 ucontrol->value.iec958.status[0] = (intelhaddata->aes_bits >> 0) & 0xff;
1423 ucontrol->value.iec958.status[1] = (intelhaddata->aes_bits >> 8) & 0xff;
1424 ucontrol->value.iec958.status[2] =
1425 (intelhaddata->aes_bits >> 16) & 0xff;
1426 ucontrol->value.iec958.status[3] =
1427 (intelhaddata->aes_bits >> 24) & 0xff;
1428 mutex_unlock(&intelhaddata->mutex);
1429 return 0;
1430}
1431
1432static int had_iec958_mask_get(struct snd_kcontrol *kcontrol,
1433 struct snd_ctl_elem_value *ucontrol)
1434{
1435 ucontrol->value.iec958.status[0] = 0xff;
1436 ucontrol->value.iec958.status[1] = 0xff;
1437 ucontrol->value.iec958.status[2] = 0xff;
1438 ucontrol->value.iec958.status[3] = 0xff;
1439 return 0;
1440}
1441
1442static int had_iec958_put(struct snd_kcontrol *kcontrol,
1443 struct snd_ctl_elem_value *ucontrol)
1444{
1445 unsigned int val;
1446 struct snd_intelhad *intelhaddata = snd_kcontrol_chip(kcontrol);
1447 int changed = 0;
1448
1449 val = (ucontrol->value.iec958.status[0] << 0) |
1450 (ucontrol->value.iec958.status[1] << 8) |
1451 (ucontrol->value.iec958.status[2] << 16) |
1452 (ucontrol->value.iec958.status[3] << 24);
1453 mutex_lock(&intelhaddata->mutex);
1454 if (intelhaddata->aes_bits != val) {
1455 intelhaddata->aes_bits = val;
1456 changed = 1;
1457 }
1458 mutex_unlock(&intelhaddata->mutex);
1459 return changed;
1460}
1461
1462static int had_ctl_eld_info(struct snd_kcontrol *kcontrol,
1463 struct snd_ctl_elem_info *uinfo)
1464{
1465 uinfo->type = SNDRV_CTL_ELEM_TYPE_BYTES;
1466 uinfo->count = HDMI_MAX_ELD_BYTES;
1467 return 0;
1468}
1469
1470static int had_ctl_eld_get(struct snd_kcontrol *kcontrol,
1471 struct snd_ctl_elem_value *ucontrol)
1472{
1473 struct snd_intelhad *intelhaddata = snd_kcontrol_chip(kcontrol);
1474
1475 mutex_lock(&intelhaddata->mutex);
1476 memcpy(ucontrol->value.bytes.data, intelhaddata->eld,
1477 HDMI_MAX_ELD_BYTES);
1478 mutex_unlock(&intelhaddata->mutex);
1479 return 0;
1480}
1481
1482static const struct snd_kcontrol_new had_controls[] = {
1483 {
1484 .access = SNDRV_CTL_ELEM_ACCESS_READ,
1485 .iface = SNDRV_CTL_ELEM_IFACE_PCM,
1486 .name = SNDRV_CTL_NAME_IEC958("", PLAYBACK, MASK),
1487 .info = had_iec958_info,
1488 .get = had_iec958_mask_get,
1489 },
1490 {
1491 .iface = SNDRV_CTL_ELEM_IFACE_PCM,
1492 .name = SNDRV_CTL_NAME_IEC958("", PLAYBACK, DEFAULT),
1493 .info = had_iec958_info,
1494 .get = had_iec958_get,
1495 .put = had_iec958_put,
1496 },
1497 {
1498 .access = (SNDRV_CTL_ELEM_ACCESS_READ |
1499 SNDRV_CTL_ELEM_ACCESS_VOLATILE),
1500 .iface = SNDRV_CTL_ELEM_IFACE_PCM,
1501 .name = "ELD",
1502 .info = had_ctl_eld_info,
1503 .get = had_ctl_eld_get,
1504 },
1505};
1506
1507
1508
1509
1510static irqreturn_t display_pipe_interrupt_handler(int irq, void *dev_id)
1511{
1512 struct snd_intelhad_card *card_ctx = dev_id;
1513 u32 audio_stat[3] = {};
1514 int pipe, port;
1515
1516 for_each_pipe(card_ctx, pipe) {
1517
1518 audio_stat[pipe] = had_read_register_raw(card_ctx, pipe,
1519 AUD_HDMI_STATUS) &
1520 (HDMI_AUDIO_UNDERRUN | HDMI_AUDIO_BUFFER_DONE);
1521
1522 if (audio_stat[pipe])
1523 had_write_register_raw(card_ctx, pipe,
1524 AUD_HDMI_STATUS, audio_stat[pipe]);
1525 }
1526
1527 for_each_port(card_ctx, port) {
1528 struct snd_intelhad *ctx = &card_ctx->pcm_ctx[port];
1529 int pipe = ctx->pipe;
1530
1531 if (pipe < 0)
1532 continue;
1533
1534 if (audio_stat[pipe] & HDMI_AUDIO_BUFFER_DONE)
1535 had_process_buffer_done(ctx);
1536 if (audio_stat[pipe] & HDMI_AUDIO_UNDERRUN)
1537 had_process_buffer_underrun(ctx);
1538 }
1539
1540 return IRQ_HANDLED;
1541}
1542
1543
1544
1545
1546static void notify_audio_lpe(struct platform_device *pdev, int port)
1547{
1548 struct snd_intelhad_card *card_ctx = platform_get_drvdata(pdev);
1549 struct snd_intelhad *ctx;
1550
1551 ctx = &card_ctx->pcm_ctx[single_port ? 0 : port];
1552 if (single_port)
1553 ctx->port = port;
1554
1555 schedule_work(&ctx->hdmi_audio_wq);
1556}
1557
1558
1559static void had_audio_wq(struct work_struct *work)
1560{
1561 struct snd_intelhad *ctx =
1562 container_of(work, struct snd_intelhad, hdmi_audio_wq);
1563 struct intel_hdmi_lpe_audio_pdata *pdata = ctx->dev->platform_data;
1564 struct intel_hdmi_lpe_audio_port_pdata *ppdata = &pdata->port[ctx->port];
1565
1566 pm_runtime_get_sync(ctx->dev);
1567 mutex_lock(&ctx->mutex);
1568 if (ppdata->pipe < 0) {
1569 dev_dbg(ctx->dev, "%s: Event: HAD_NOTIFY_HOT_UNPLUG : port = %d\n",
1570 __func__, ctx->port);
1571
1572 memset(ctx->eld, 0, sizeof(ctx->eld));
1573
1574 ctx->dp_output = false;
1575 ctx->tmds_clock_speed = 0;
1576 ctx->link_rate = 0;
1577
1578
1579 had_process_hot_unplug(ctx);
1580
1581 ctx->pipe = -1;
1582 } else {
1583 dev_dbg(ctx->dev, "%s: HAD_NOTIFY_ELD : port = %d, tmds = %d\n",
1584 __func__, ctx->port, ppdata->ls_clock);
1585
1586 memcpy(ctx->eld, ppdata->eld, sizeof(ctx->eld));
1587
1588 ctx->dp_output = ppdata->dp_output;
1589 if (ctx->dp_output) {
1590 ctx->tmds_clock_speed = 0;
1591 ctx->link_rate = ppdata->ls_clock;
1592 } else {
1593 ctx->tmds_clock_speed = ppdata->ls_clock;
1594 ctx->link_rate = 0;
1595 }
1596
1597
1598
1599
1600
1601 had_process_hot_plug(ctx);
1602
1603 ctx->pipe = ppdata->pipe;
1604
1605
1606 had_process_mode_change(ctx);
1607 }
1608
1609 mutex_unlock(&ctx->mutex);
1610 pm_runtime_mark_last_busy(ctx->dev);
1611 pm_runtime_put_autosuspend(ctx->dev);
1612}
1613
1614
1615
1616
1617static int had_create_jack(struct snd_intelhad *ctx,
1618 struct snd_pcm *pcm)
1619{
1620 char hdmi_str[32];
1621 int err;
1622
1623 snprintf(hdmi_str, sizeof(hdmi_str),
1624 "HDMI/DP,pcm=%d", pcm->device);
1625
1626 err = snd_jack_new(ctx->card_ctx->card, hdmi_str,
1627 SND_JACK_AVOUT, &ctx->jack,
1628 true, false);
1629 if (err < 0)
1630 return err;
1631 ctx->jack->private_data = ctx;
1632 return 0;
1633}
1634
1635
1636
1637
1638
1639static int __maybe_unused hdmi_lpe_audio_suspend(struct device *dev)
1640{
1641 struct snd_intelhad_card *card_ctx = dev_get_drvdata(dev);
1642
1643 snd_power_change_state(card_ctx->card, SNDRV_CTL_POWER_D3hot);
1644
1645 return 0;
1646}
1647
1648static int __maybe_unused hdmi_lpe_audio_resume(struct device *dev)
1649{
1650 struct snd_intelhad_card *card_ctx = dev_get_drvdata(dev);
1651
1652 pm_runtime_mark_last_busy(dev);
1653
1654 snd_power_change_state(card_ctx->card, SNDRV_CTL_POWER_D0);
1655
1656 return 0;
1657}
1658
1659
1660static void hdmi_lpe_audio_free(struct snd_card *card)
1661{
1662 struct snd_intelhad_card *card_ctx = card->private_data;
1663 struct intel_hdmi_lpe_audio_pdata *pdata = card_ctx->dev->platform_data;
1664 int port;
1665
1666 spin_lock_irq(&pdata->lpe_audio_slock);
1667 pdata->notify_audio_lpe = NULL;
1668 spin_unlock_irq(&pdata->lpe_audio_slock);
1669
1670 for_each_port(card_ctx, port) {
1671 struct snd_intelhad *ctx = &card_ctx->pcm_ctx[port];
1672
1673 cancel_work_sync(&ctx->hdmi_audio_wq);
1674 }
1675
1676 if (card_ctx->mmio_start)
1677 iounmap(card_ctx->mmio_start);
1678 if (card_ctx->irq >= 0)
1679 free_irq(card_ctx->irq, card_ctx);
1680}
1681
1682
1683
1684
1685
1686
1687
1688static int hdmi_lpe_audio_probe(struct platform_device *pdev)
1689{
1690 struct snd_card *card;
1691 struct snd_intelhad_card *card_ctx;
1692 struct snd_intelhad *ctx;
1693 struct snd_pcm *pcm;
1694 struct intel_hdmi_lpe_audio_pdata *pdata;
1695 int irq;
1696 struct resource *res_mmio;
1697 int port, ret;
1698
1699 pdata = pdev->dev.platform_data;
1700 if (!pdata) {
1701 dev_err(&pdev->dev, "%s: quit: pdata not allocated by i915!!\n", __func__);
1702 return -EINVAL;
1703 }
1704
1705
1706 irq = platform_get_irq(pdev, 0);
1707 if (irq < 0)
1708 return irq;
1709
1710 res_mmio = platform_get_resource(pdev, IORESOURCE_MEM, 0);
1711 if (!res_mmio) {
1712 dev_err(&pdev->dev, "Could not get IO_MEM resources\n");
1713 return -ENXIO;
1714 }
1715
1716
1717 ret = snd_card_new(&pdev->dev, hdmi_card_index, hdmi_card_id,
1718 THIS_MODULE, sizeof(*card_ctx), &card);
1719 if (ret)
1720 return ret;
1721
1722 card_ctx = card->private_data;
1723 card_ctx->dev = &pdev->dev;
1724 card_ctx->card = card;
1725 strcpy(card->driver, INTEL_HAD);
1726 strcpy(card->shortname, "Intel HDMI/DP LPE Audio");
1727 strcpy(card->longname, "Intel HDMI/DP LPE Audio");
1728
1729 card_ctx->irq = -1;
1730
1731 card->private_free = hdmi_lpe_audio_free;
1732
1733 platform_set_drvdata(pdev, card_ctx);
1734
1735 card_ctx->num_pipes = pdata->num_pipes;
1736 card_ctx->num_ports = single_port ? 1 : pdata->num_ports;
1737
1738 for_each_port(card_ctx, port) {
1739 ctx = &card_ctx->pcm_ctx[port];
1740 ctx->card_ctx = card_ctx;
1741 ctx->dev = card_ctx->dev;
1742 ctx->port = single_port ? -1 : port;
1743 ctx->pipe = -1;
1744
1745 spin_lock_init(&ctx->had_spinlock);
1746 mutex_init(&ctx->mutex);
1747 INIT_WORK(&ctx->hdmi_audio_wq, had_audio_wq);
1748 }
1749
1750 dev_dbg(&pdev->dev, "%s: mmio_start = 0x%x, mmio_end = 0x%x\n",
1751 __func__, (unsigned int)res_mmio->start,
1752 (unsigned int)res_mmio->end);
1753
1754 card_ctx->mmio_start = ioremap(res_mmio->start,
1755 (size_t)(resource_size(res_mmio)));
1756 if (!card_ctx->mmio_start) {
1757 dev_err(&pdev->dev, "Could not get ioremap\n");
1758 ret = -EACCES;
1759 goto err;
1760 }
1761
1762
1763 ret = request_irq(irq, display_pipe_interrupt_handler, 0,
1764 pdev->name, card_ctx);
1765 if (ret < 0) {
1766 dev_err(&pdev->dev, "request_irq failed\n");
1767 goto err;
1768 }
1769
1770 card_ctx->irq = irq;
1771
1772
1773 dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32));
1774
1775 init_channel_allocations();
1776
1777 card_ctx->num_pipes = pdata->num_pipes;
1778 card_ctx->num_ports = single_port ? 1 : pdata->num_ports;
1779
1780 for_each_port(card_ctx, port) {
1781 int i;
1782
1783 ctx = &card_ctx->pcm_ctx[port];
1784 ret = snd_pcm_new(card, INTEL_HAD, port, MAX_PB_STREAMS,
1785 MAX_CAP_STREAMS, &pcm);
1786 if (ret)
1787 goto err;
1788
1789
1790 pcm->private_data = ctx;
1791 pcm->info_flags = 0;
1792 strscpy(pcm->name, card->shortname, strlen(card->shortname));
1793
1794 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &had_pcm_ops);
1795
1796
1797
1798
1799 snd_pcm_set_managed_buffer_all(pcm, SNDRV_DMA_TYPE_DEV_UC,
1800 card->dev, HAD_DEFAULT_BUFFER,
1801 HAD_MAX_BUFFER);
1802
1803
1804 for (i = 0; i < ARRAY_SIZE(had_controls); i++) {
1805 struct snd_kcontrol *kctl;
1806
1807 kctl = snd_ctl_new1(&had_controls[i], ctx);
1808 if (!kctl) {
1809 ret = -ENOMEM;
1810 goto err;
1811 }
1812
1813 kctl->id.device = pcm->device;
1814
1815 ret = snd_ctl_add(card, kctl);
1816 if (ret < 0)
1817 goto err;
1818 }
1819
1820
1821 ret = had_register_chmap_ctls(ctx, pcm);
1822 if (ret < 0)
1823 goto err;
1824
1825 ret = had_create_jack(ctx, pcm);
1826 if (ret < 0)
1827 goto err;
1828 }
1829
1830 ret = snd_card_register(card);
1831 if (ret)
1832 goto err;
1833
1834 spin_lock_irq(&pdata->lpe_audio_slock);
1835 pdata->notify_audio_lpe = notify_audio_lpe;
1836 spin_unlock_irq(&pdata->lpe_audio_slock);
1837
1838 pm_runtime_use_autosuspend(&pdev->dev);
1839 pm_runtime_mark_last_busy(&pdev->dev);
1840
1841 dev_dbg(&pdev->dev, "%s: handle pending notification\n", __func__);
1842 for_each_port(card_ctx, port) {
1843 struct snd_intelhad *ctx = &card_ctx->pcm_ctx[port];
1844
1845 schedule_work(&ctx->hdmi_audio_wq);
1846 }
1847
1848 return 0;
1849
1850err:
1851 snd_card_free(card);
1852 return ret;
1853}
1854
1855
1856
1857
1858
1859
1860static int hdmi_lpe_audio_remove(struct platform_device *pdev)
1861{
1862 struct snd_intelhad_card *card_ctx = platform_get_drvdata(pdev);
1863
1864 snd_card_free(card_ctx->card);
1865 return 0;
1866}
1867
1868static const struct dev_pm_ops hdmi_lpe_audio_pm = {
1869 SET_SYSTEM_SLEEP_PM_OPS(hdmi_lpe_audio_suspend, hdmi_lpe_audio_resume)
1870};
1871
1872static struct platform_driver hdmi_lpe_audio_driver = {
1873 .driver = {
1874 .name = "hdmi-lpe-audio",
1875 .pm = &hdmi_lpe_audio_pm,
1876 },
1877 .probe = hdmi_lpe_audio_probe,
1878 .remove = hdmi_lpe_audio_remove,
1879};
1880
1881module_platform_driver(hdmi_lpe_audio_driver);
1882MODULE_ALIAS("platform:hdmi_lpe_audio");
1883
1884MODULE_AUTHOR("Sailaja Bandarupalli <sailaja.bandarupalli@intel.com>");
1885MODULE_AUTHOR("Ramesh Babu K V <ramesh.babu@intel.com>");
1886MODULE_AUTHOR("Vaibhav Agarwal <vaibhav.agarwal@intel.com>");
1887MODULE_AUTHOR("Jerome Anand <jerome.anand@intel.com>");
1888MODULE_DESCRIPTION("Intel HDMI Audio driver");
1889MODULE_LICENSE("GPL v2");
1890
