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5dab11d8 JA |
1 | /* |
2 | * intel_hdmi_audio.c - Intel HDMI audio driver | |
3 | * | |
4 | * Copyright (C) 2016 Intel Corp | |
5 | * Authors: Sailaja Bandarupalli <sailaja.bandarupalli@intel.com> | |
6 | * Ramesh Babu K V <ramesh.babu@intel.com> | |
7 | * Vaibhav Agarwal <vaibhav.agarwal@intel.com> | |
8 | * Jerome Anand <jerome.anand@intel.com> | |
9 | * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ | |
10 | * | |
11 | * This program is free software; you can redistribute it and/or modify | |
12 | * it under the terms of the GNU General Public License as published by | |
13 | * the Free Software Foundation; version 2 of the License. | |
14 | * | |
15 | * This program is distributed in the hope that it will be useful, but | |
16 | * WITHOUT ANY WARRANTY; without even the implied warranty of | |
17 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
18 | * General Public License for more details. | |
19 | * | |
20 | * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ | |
21 | * ALSA driver for Intel HDMI audio | |
22 | */ | |
23 | ||
03c34377 | 24 | #include <linux/types.h> |
5dab11d8 JA |
25 | #include <linux/platform_device.h> |
26 | #include <linux/io.h> | |
27 | #include <linux/slab.h> | |
28 | #include <linux/module.h> | |
da864809 | 29 | #include <linux/interrupt.h> |
03c34377 | 30 | #include <linux/pm_runtime.h> |
412bbe7d | 31 | #include <linux/dma-mapping.h> |
e2acecf2 | 32 | #include <linux/delay.h> |
5dab11d8 | 33 | #include <asm/cacheflush.h> |
5dab11d8 | 34 | #include <sound/core.h> |
03c34377 TI |
35 | #include <sound/asoundef.h> |
36 | #include <sound/pcm.h> | |
5dab11d8 JA |
37 | #include <sound/pcm_params.h> |
38 | #include <sound/initval.h> | |
39 | #include <sound/control.h> | |
b9bacf27 | 40 | #include <sound/jack.h> |
03c34377 | 41 | #include <drm/drm_edid.h> |
da864809 | 42 | #include <drm/intel_lpe_audio.h> |
5dab11d8 JA |
43 | #include "intel_hdmi_audio.h" |
44 | ||
5dab11d8 JA |
45 | /*standard module options for ALSA. This module supports only one card*/ |
46 | static int hdmi_card_index = SNDRV_DEFAULT_IDX1; | |
47 | static char *hdmi_card_id = SNDRV_DEFAULT_STR1; | |
5dab11d8 JA |
48 | |
49 | module_param_named(index, hdmi_card_index, int, 0444); | |
50 | MODULE_PARM_DESC(index, | |
51 | "Index value for INTEL Intel HDMI Audio controller."); | |
52 | module_param_named(id, hdmi_card_id, charp, 0444); | |
53 | MODULE_PARM_DESC(id, | |
54 | "ID string for INTEL Intel HDMI Audio controller."); | |
55 | ||
56 | /* | |
57 | * ELD SA bits in the CEA Speaker Allocation data block | |
58 | */ | |
4a5ddb2c | 59 | static const int eld_speaker_allocation_bits[] = { |
5dab11d8 JA |
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 | /* the following are not defined in ELD yet */ | |
68 | [7] = 0, | |
69 | }; | |
70 | ||
71 | /* | |
72 | * This is an ordered list! | |
73 | * | |
74 | * The preceding ones have better chances to be selected by | |
75 | * hdmi_channel_allocation(). | |
76 | */ | |
77 | static struct cea_channel_speaker_allocation channel_allocations[] = { | |
78 | /* channel: 7 6 5 4 3 2 1 0 */ | |
79 | { .ca_index = 0x00, .speakers = { 0, 0, 0, 0, 0, 0, FR, FL } }, | |
80 | /* 2.1 */ | |
81 | { .ca_index = 0x01, .speakers = { 0, 0, 0, 0, 0, LFE, FR, FL } }, | |
82 | /* Dolby Surround */ | |
83 | { .ca_index = 0x02, .speakers = { 0, 0, 0, 0, FC, 0, FR, FL } }, | |
84 | /* surround40 */ | |
85 | { .ca_index = 0x08, .speakers = { 0, 0, RR, RL, 0, 0, FR, FL } }, | |
86 | /* surround41 */ | |
87 | { .ca_index = 0x09, .speakers = { 0, 0, RR, RL, 0, LFE, FR, FL } }, | |
88 | /* surround50 */ | |
89 | { .ca_index = 0x0a, .speakers = { 0, 0, RR, RL, FC, 0, FR, FL } }, | |
90 | /* surround51 */ | |
91 | { .ca_index = 0x0b, .speakers = { 0, 0, RR, RL, FC, LFE, FR, FL } }, | |
92 | /* 6.1 */ | |
93 | { .ca_index = 0x0f, .speakers = { 0, RC, RR, RL, FC, LFE, FR, FL } }, | |
94 | /* surround71 */ | |
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 | ||
4a5ddb2c | 122 | static const struct channel_map_table map_tables[] = { |
5dab11d8 JA |
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 | {} /* terminator */ | |
132 | }; | |
133 | ||
134 | /* hardware capability structure */ | |
b556290f | 135 | static const struct snd_pcm_hardware had_pcm_hardware = { |
5dab11d8 | 136 | .info = (SNDRV_PCM_INFO_INTERLEAVED | |
a9ebdd0e | 137 | SNDRV_PCM_INFO_MMAP | |
e8de9859 TI |
138 | SNDRV_PCM_INFO_MMAP_VALID | |
139 | SNDRV_PCM_INFO_NO_PERIOD_WAKEUP), | |
3fe2cf7e TI |
140 | .formats = (SNDRV_PCM_FMTBIT_S16_LE | |
141 | SNDRV_PCM_FMTBIT_S24_LE | | |
85bd8748 | 142 | SNDRV_PCM_FMTBIT_S32_LE), |
5dab11d8 JA |
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 | ||
313d9f28 TI |
162 | /* Get the active PCM substream; |
163 | * Call had_substream_put() for unreferecing. | |
164 | * Don't call this inside had_spinlock, as it takes by itself | |
165 | */ | |
166 | static struct snd_pcm_substream * | |
167 | had_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 | /* Unref the active PCM substream; | |
181 | * Don't call this inside had_spinlock, as it takes by itself | |
182 | */ | |
183 | static 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 | ||
5dab11d8 | 192 | /* Register access functions */ |
28ed125b TI |
193 | static u32 had_read_register_raw(struct snd_intelhad *ctx, u32 reg) |
194 | { | |
195 | return ioread32(ctx->mmio_start + ctx->had_config_offset + reg); | |
196 | } | |
197 | ||
198 | static void had_write_register_raw(struct snd_intelhad *ctx, u32 reg, u32 val) | |
199 | { | |
200 | iowrite32(val, ctx->mmio_start + ctx->had_config_offset + reg); | |
201 | } | |
202 | ||
83af57dd | 203 | static void had_read_register(struct snd_intelhad *ctx, u32 reg, u32 *val) |
5dab11d8 | 204 | { |
28ed125b TI |
205 | if (!ctx->connected) |
206 | *val = 0; | |
207 | else | |
208 | *val = had_read_register_raw(ctx, reg); | |
5dab11d8 JA |
209 | } |
210 | ||
83af57dd | 211 | static void had_write_register(struct snd_intelhad *ctx, u32 reg, u32 val) |
5dab11d8 | 212 | { |
28ed125b TI |
213 | if (ctx->connected) |
214 | had_write_register_raw(ctx, reg, val); | |
5dab11d8 JA |
215 | } |
216 | ||
da864809 | 217 | /* |
313d9f28 TI |
218 | * enable / disable audio configuration |
219 | * | |
83af57dd | 220 | * The normal read/modify should not directly be used on VLV2 for |
da864809 | 221 | * updating AUD_CONFIG register. |
5dab11d8 JA |
222 | * This is because: |
223 | * Bit6 of AUD_CONFIG register is writeonly due to a silicon bug on VLV2 | |
224 | * HDMI IP. As a result a read-modify of AUD_CONFIG regiter will always | |
225 | * clear bit6. AUD_CONFIG[6:4] represents the "channels" field of the | |
226 | * register. This field should be 1xy binary for configuration with 6 or | |
227 | * more channels. Read-modify of AUD_CONFIG (Eg. for enabling audio) | |
228 | * causes the "channels" field to be updated as 0xy binary resulting in | |
229 | * bad audio. The fix is to always write the AUD_CONFIG[6:4] with | |
230 | * appropriate value when doing read-modify of AUD_CONFIG register. | |
5dab11d8 | 231 | */ |
40ce4b5d | 232 | static void had_enable_audio(struct snd_intelhad *intelhaddata, |
b556290f | 233 | bool enable) |
5dab11d8 | 234 | { |
40ce4b5d TI |
235 | /* update the cached value */ |
236 | intelhaddata->aud_config.regx.aud_en = enable; | |
237 | had_write_register(intelhaddata, AUD_CONFIG, | |
238 | intelhaddata->aud_config.regval); | |
5dab11d8 JA |
239 | } |
240 | ||
075a1d46 TI |
241 | /* forcibly ACKs to both BUFFER_DONE and BUFFER_UNDERRUN interrupts */ |
242 | static void had_ack_irqs(struct snd_intelhad *ctx) | |
da864809 TI |
243 | { |
244 | u32 status_reg; | |
245 | ||
28ed125b TI |
246 | if (!ctx->connected) |
247 | return; | |
075a1d46 TI |
248 | had_read_register(ctx, AUD_HDMI_STATUS, &status_reg); |
249 | status_reg |= HDMI_AUDIO_BUFFER_DONE | HDMI_AUDIO_UNDERRUN; | |
250 | had_write_register(ctx, AUD_HDMI_STATUS, status_reg); | |
251 | had_read_register(ctx, AUD_HDMI_STATUS, &status_reg); | |
da864809 TI |
252 | } |
253 | ||
f4566aa1 TI |
254 | /* Reset buffer pointers */ |
255 | static void had_reset_audio(struct snd_intelhad *intelhaddata) | |
5dab11d8 | 256 | { |
77531bee TI |
257 | had_write_register(intelhaddata, AUD_HDMI_STATUS, |
258 | AUD_HDMI_STATUSG_MASK_FUNCRST); | |
f4566aa1 | 259 | had_write_register(intelhaddata, AUD_HDMI_STATUS, 0); |
5dab11d8 JA |
260 | } |
261 | ||
2e52f5e5 | 262 | /* |
5dab11d8 JA |
263 | * initialize audio channel status registers |
264 | * This function is called in the prepare callback | |
265 | */ | |
266 | static int had_prog_status_reg(struct snd_pcm_substream *substream, | |
267 | struct snd_intelhad *intelhaddata) | |
268 | { | |
7ceba75f TI |
269 | union aud_cfg cfg_val = {.regval = 0}; |
270 | union aud_ch_status_0 ch_stat0 = {.regval = 0}; | |
271 | union aud_ch_status_1 ch_stat1 = {.regval = 0}; | |
5dab11d8 | 272 | |
7ceba75f | 273 | ch_stat0.regx.lpcm_id = (intelhaddata->aes_bits & |
2e52f5e5 | 274 | IEC958_AES0_NONAUDIO) >> 1; |
7ceba75f | 275 | ch_stat0.regx.clk_acc = (intelhaddata->aes_bits & |
2e52f5e5 | 276 | IEC958_AES3_CON_CLOCK) >> 4; |
7ceba75f | 277 | cfg_val.regx.val_bit = ch_stat0.regx.lpcm_id; |
5dab11d8 JA |
278 | |
279 | switch (substream->runtime->rate) { | |
280 | case AUD_SAMPLE_RATE_32: | |
7ceba75f | 281 | ch_stat0.regx.samp_freq = CH_STATUS_MAP_32KHZ; |
5dab11d8 JA |
282 | break; |
283 | ||
284 | case AUD_SAMPLE_RATE_44_1: | |
7ceba75f | 285 | ch_stat0.regx.samp_freq = CH_STATUS_MAP_44KHZ; |
5dab11d8 JA |
286 | break; |
287 | case AUD_SAMPLE_RATE_48: | |
7ceba75f | 288 | ch_stat0.regx.samp_freq = CH_STATUS_MAP_48KHZ; |
5dab11d8 JA |
289 | break; |
290 | case AUD_SAMPLE_RATE_88_2: | |
7ceba75f | 291 | ch_stat0.regx.samp_freq = CH_STATUS_MAP_88KHZ; |
5dab11d8 JA |
292 | break; |
293 | case AUD_SAMPLE_RATE_96: | |
7ceba75f | 294 | ch_stat0.regx.samp_freq = CH_STATUS_MAP_96KHZ; |
5dab11d8 JA |
295 | break; |
296 | case AUD_SAMPLE_RATE_176_4: | |
7ceba75f | 297 | ch_stat0.regx.samp_freq = CH_STATUS_MAP_176KHZ; |
5dab11d8 JA |
298 | break; |
299 | case AUD_SAMPLE_RATE_192: | |
7ceba75f | 300 | ch_stat0.regx.samp_freq = CH_STATUS_MAP_192KHZ; |
5dab11d8 JA |
301 | break; |
302 | ||
303 | default: | |
304 | /* control should never come here */ | |
305 | return -EINVAL; | |
5dab11d8 | 306 | } |
2e52f5e5 | 307 | |
79dda75a | 308 | had_write_register(intelhaddata, |
7ceba75f | 309 | AUD_CH_STATUS_0, ch_stat0.regval); |
5dab11d8 | 310 | |
85bd8748 | 311 | switch (substream->runtime->format) { |
85bd8748 | 312 | case SNDRV_PCM_FORMAT_S16_LE: |
7ceba75f TI |
313 | ch_stat1.regx.max_wrd_len = MAX_SMPL_WIDTH_20; |
314 | ch_stat1.regx.wrd_len = SMPL_WIDTH_16BITS; | |
85bd8748 | 315 | break; |
85bd8748 TI |
316 | case SNDRV_PCM_FORMAT_S24_LE: |
317 | case SNDRV_PCM_FORMAT_S32_LE: | |
7ceba75f TI |
318 | ch_stat1.regx.max_wrd_len = MAX_SMPL_WIDTH_24; |
319 | ch_stat1.regx.wrd_len = SMPL_WIDTH_24BITS; | |
85bd8748 TI |
320 | break; |
321 | default: | |
322 | return -EINVAL; | |
5dab11d8 | 323 | } |
2e52f5e5 | 324 | |
79dda75a | 325 | had_write_register(intelhaddata, |
7ceba75f | 326 | AUD_CH_STATUS_1, ch_stat1.regval); |
5dab11d8 JA |
327 | return 0; |
328 | } | |
329 | ||
76296ef0 | 330 | /* |
5dab11d8 JA |
331 | * function to initialize audio |
332 | * registers and buffer confgiuration registers | |
333 | * This function is called in the prepare callback | |
334 | */ | |
b556290f TI |
335 | static int had_init_audio_ctrl(struct snd_pcm_substream *substream, |
336 | struct snd_intelhad *intelhaddata) | |
5dab11d8 | 337 | { |
7ceba75f TI |
338 | union aud_cfg cfg_val = {.regval = 0}; |
339 | union aud_buf_config buf_cfg = {.regval = 0}; | |
5dab11d8 JA |
340 | u8 channels; |
341 | ||
342 | had_prog_status_reg(substream, intelhaddata); | |
343 | ||
7ceba75f TI |
344 | buf_cfg.regx.audio_fifo_watermark = FIFO_THRESHOLD; |
345 | buf_cfg.regx.dma_fifo_watermark = DMA_FIFO_THRESHOLD; | |
346 | buf_cfg.regx.aud_delay = 0; | |
347 | had_write_register(intelhaddata, AUD_BUF_CONFIG, buf_cfg.regval); | |
5dab11d8 JA |
348 | |
349 | channels = substream->runtime->channels; | |
7ceba75f | 350 | cfg_val.regx.num_ch = channels - 2; |
5dab11d8 | 351 | if (channels <= 2) |
7ceba75f | 352 | cfg_val.regx.layout = LAYOUT0; |
5dab11d8 | 353 | else |
7ceba75f | 354 | cfg_val.regx.layout = LAYOUT1; |
5dab11d8 | 355 | |
3fe2cf7e TI |
356 | if (substream->runtime->format == SNDRV_PCM_FORMAT_S16_LE) |
357 | cfg_val.regx.packet_mode = 1; | |
358 | ||
85bd8748 TI |
359 | if (substream->runtime->format == SNDRV_PCM_FORMAT_S32_LE) |
360 | cfg_val.regx.left_align = 1; | |
361 | ||
7ceba75f | 362 | cfg_val.regx.val_bit = 1; |
83af57dd TI |
363 | |
364 | /* fix up the DP bits */ | |
365 | if (intelhaddata->dp_output) { | |
366 | cfg_val.regx.dp_modei = 1; | |
367 | cfg_val.regx.set = 1; | |
368 | } | |
369 | ||
7ceba75f | 370 | had_write_register(intelhaddata, AUD_CONFIG, cfg_val.regval); |
40ce4b5d | 371 | intelhaddata->aud_config = cfg_val; |
5dab11d8 JA |
372 | return 0; |
373 | } | |
374 | ||
5dab11d8 JA |
375 | /* |
376 | * Compute derived values in channel_allocations[]. | |
377 | */ | |
378 | static void init_channel_allocations(void) | |
379 | { | |
380 | int i, j; | |
381 | struct cea_channel_speaker_allocation *p; | |
382 | ||
5dab11d8 JA |
383 | for (i = 0; i < ARRAY_SIZE(channel_allocations); i++) { |
384 | p = channel_allocations + i; | |
385 | p->channels = 0; | |
386 | p->spk_mask = 0; | |
387 | for (j = 0; j < ARRAY_SIZE(p->speakers); j++) | |
388 | if (p->speakers[j]) { | |
389 | p->channels++; | |
390 | p->spk_mask |= p->speakers[j]; | |
391 | } | |
392 | } | |
393 | } | |
394 | ||
395 | /* | |
396 | * The transformation takes two steps: | |
397 | * | |
398 | * eld->spk_alloc => (eld_speaker_allocation_bits[]) => spk_mask | |
399 | * spk_mask => (channel_allocations[]) => ai->CA | |
400 | * | |
401 | * TODO: it could select the wrong CA from multiple candidates. | |
402 | */ | |
b556290f TI |
403 | static int had_channel_allocation(struct snd_intelhad *intelhaddata, |
404 | int channels) | |
5dab11d8 JA |
405 | { |
406 | int i; | |
407 | int ca = 0; | |
408 | int spk_mask = 0; | |
409 | ||
410 | /* | |
411 | * CA defaults to 0 for basic stereo audio | |
412 | */ | |
413 | if (channels <= 2) | |
414 | return 0; | |
415 | ||
416 | /* | |
417 | * expand ELD's speaker allocation mask | |
418 | * | |
419 | * ELD tells the speaker mask in a compact(paired) form, | |
420 | * expand ELD's notions to match the ones used by Audio InfoFrame. | |
421 | */ | |
422 | ||
423 | for (i = 0; i < ARRAY_SIZE(eld_speaker_allocation_bits); i++) { | |
df0435db | 424 | if (intelhaddata->eld[DRM_ELD_SPEAKER] & (1 << i)) |
5dab11d8 JA |
425 | spk_mask |= eld_speaker_allocation_bits[i]; |
426 | } | |
427 | ||
428 | /* search for the first working match in the CA table */ | |
429 | for (i = 0; i < ARRAY_SIZE(channel_allocations); i++) { | |
430 | if (channels == channel_allocations[i].channels && | |
431 | (spk_mask & channel_allocations[i].spk_mask) == | |
432 | channel_allocations[i].spk_mask) { | |
433 | ca = channel_allocations[i].ca_index; | |
434 | break; | |
435 | } | |
436 | } | |
437 | ||
c75b0476 | 438 | dev_dbg(intelhaddata->dev, "select CA 0x%x for %d\n", ca, channels); |
5dab11d8 JA |
439 | |
440 | return ca; | |
441 | } | |
442 | ||
443 | /* from speaker bit mask to ALSA API channel position */ | |
444 | static int spk_to_chmap(int spk) | |
445 | { | |
4a5ddb2c | 446 | const struct channel_map_table *t = map_tables; |
5dab11d8 JA |
447 | |
448 | for (; t->map; t++) { | |
449 | if (t->spk_mask == spk) | |
450 | return t->map; | |
451 | } | |
452 | return 0; | |
453 | } | |
454 | ||
372d855f | 455 | static void had_build_channel_allocation_map(struct snd_intelhad *intelhaddata) |
5dab11d8 | 456 | { |
2e52f5e5 | 457 | int i, c; |
5dab11d8 JA |
458 | int spk_mask = 0; |
459 | struct snd_pcm_chmap_elem *chmap; | |
460 | u8 eld_high, eld_high_mask = 0xF0; | |
461 | u8 high_msb; | |
462 | ||
18353192 TI |
463 | kfree(intelhaddata->chmap->chmap); |
464 | intelhaddata->chmap->chmap = NULL; | |
465 | ||
5dab11d8 | 466 | chmap = kzalloc(sizeof(*chmap), GFP_KERNEL); |
18353192 | 467 | if (!chmap) |
5dab11d8 | 468 | return; |
5dab11d8 | 469 | |
df0435db TI |
470 | dev_dbg(intelhaddata->dev, "eld speaker = %x\n", |
471 | intelhaddata->eld[DRM_ELD_SPEAKER]); | |
5dab11d8 JA |
472 | |
473 | /* WA: Fix the max channel supported to 8 */ | |
474 | ||
475 | /* | |
476 | * Sink may support more than 8 channels, if eld_high has more than | |
477 | * one bit set. SOC supports max 8 channels. | |
478 | * Refer eld_speaker_allocation_bits, for sink speaker allocation | |
479 | */ | |
480 | ||
481 | /* if 0x2F < eld < 0x4F fall back to 0x2f, else fall back to 0x4F */ | |
df0435db | 482 | eld_high = intelhaddata->eld[DRM_ELD_SPEAKER] & eld_high_mask; |
5dab11d8 JA |
483 | if ((eld_high & (eld_high-1)) && (eld_high > 0x1F)) { |
484 | /* eld_high & (eld_high-1): if more than 1 bit set */ | |
485 | /* 0x1F: 7 channels */ | |
486 | for (i = 1; i < 4; i++) { | |
487 | high_msb = eld_high & (0x80 >> i); | |
488 | if (high_msb) { | |
df0435db | 489 | intelhaddata->eld[DRM_ELD_SPEAKER] &= |
5dab11d8 JA |
490 | high_msb | 0xF; |
491 | break; | |
492 | } | |
493 | } | |
494 | } | |
495 | ||
496 | for (i = 0; i < ARRAY_SIZE(eld_speaker_allocation_bits); i++) { | |
df0435db | 497 | if (intelhaddata->eld[DRM_ELD_SPEAKER] & (1 << i)) |
5dab11d8 JA |
498 | spk_mask |= eld_speaker_allocation_bits[i]; |
499 | } | |
500 | ||
501 | for (i = 0; i < ARRAY_SIZE(channel_allocations); i++) { | |
502 | if (spk_mask == channel_allocations[i].spk_mask) { | |
503 | for (c = 0; c < channel_allocations[i].channels; c++) { | |
504 | chmap->map[c] = spk_to_chmap( | |
505 | channel_allocations[i].speakers[ | |
2e52f5e5 | 506 | (MAX_SPEAKERS - 1) - c]); |
5dab11d8 JA |
507 | } |
508 | chmap->channels = channel_allocations[i].channels; | |
509 | intelhaddata->chmap->chmap = chmap; | |
510 | break; | |
511 | } | |
512 | } | |
18353192 | 513 | if (i >= ARRAY_SIZE(channel_allocations)) |
5dab11d8 | 514 | kfree(chmap); |
5dab11d8 JA |
515 | } |
516 | ||
517 | /* | |
518 | * ALSA API channel-map control callbacks | |
519 | */ | |
520 | static int had_chmap_ctl_info(struct snd_kcontrol *kcontrol, | |
521 | struct snd_ctl_elem_info *uinfo) | |
522 | { | |
5dab11d8 JA |
523 | uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER; |
524 | uinfo->count = HAD_MAX_CHANNEL; | |
525 | uinfo->value.integer.min = 0; | |
526 | uinfo->value.integer.max = SNDRV_CHMAP_LAST; | |
527 | return 0; | |
528 | } | |
529 | ||
530 | static int had_chmap_ctl_get(struct snd_kcontrol *kcontrol, | |
531 | struct snd_ctl_elem_value *ucontrol) | |
532 | { | |
533 | struct snd_pcm_chmap *info = snd_kcontrol_chip(kcontrol); | |
534 | struct snd_intelhad *intelhaddata = info->private_data; | |
2e52f5e5 | 535 | int i; |
5dab11d8 JA |
536 | const struct snd_pcm_chmap_elem *chmap; |
537 | ||
a72ccfba TI |
538 | memset(ucontrol->value.integer.value, 0, |
539 | sizeof(long) * HAD_MAX_CHANNEL); | |
8f8d1d7f TI |
540 | mutex_lock(&intelhaddata->mutex); |
541 | if (!intelhaddata->chmap->chmap) { | |
542 | mutex_unlock(&intelhaddata->mutex); | |
a72ccfba | 543 | return 0; |
8f8d1d7f TI |
544 | } |
545 | ||
5dab11d8 | 546 | chmap = intelhaddata->chmap->chmap; |
c75b0476 | 547 | for (i = 0; i < chmap->channels; i++) |
5dab11d8 | 548 | ucontrol->value.integer.value[i] = chmap->map[i]; |
8f8d1d7f | 549 | mutex_unlock(&intelhaddata->mutex); |
5dab11d8 JA |
550 | |
551 | return 0; | |
552 | } | |
553 | ||
554 | static int had_register_chmap_ctls(struct snd_intelhad *intelhaddata, | |
555 | struct snd_pcm *pcm) | |
556 | { | |
2e52f5e5 | 557 | int err; |
5dab11d8 JA |
558 | |
559 | err = snd_pcm_add_chmap_ctls(pcm, SNDRV_PCM_STREAM_PLAYBACK, | |
560 | NULL, 0, (unsigned long)intelhaddata, | |
561 | &intelhaddata->chmap); | |
562 | if (err < 0) | |
563 | return err; | |
564 | ||
565 | intelhaddata->chmap->private_data = intelhaddata; | |
e9d65abf TI |
566 | intelhaddata->chmap->kctl->info = had_chmap_ctl_info; |
567 | intelhaddata->chmap->kctl->get = had_chmap_ctl_get; | |
5dab11d8 JA |
568 | intelhaddata->chmap->chmap = NULL; |
569 | return 0; | |
570 | } | |
571 | ||
76296ef0 | 572 | /* |
44684f61 | 573 | * Initialize Data Island Packets registers |
5dab11d8 JA |
574 | * This function is called in the prepare callback |
575 | */ | |
b556290f TI |
576 | static void had_prog_dip(struct snd_pcm_substream *substream, |
577 | struct snd_intelhad *intelhaddata) | |
5dab11d8 JA |
578 | { |
579 | int i; | |
7ceba75f TI |
580 | union aud_ctrl_st ctrl_state = {.regval = 0}; |
581 | union aud_info_frame2 frame2 = {.regval = 0}; | |
582 | union aud_info_frame3 frame3 = {.regval = 0}; | |
5dab11d8 | 583 | u8 checksum = 0; |
964ca808 | 584 | u32 info_frame; |
5dab11d8 | 585 | int channels; |
36ed3466 | 586 | int ca; |
5dab11d8 JA |
587 | |
588 | channels = substream->runtime->channels; | |
589 | ||
7ceba75f | 590 | had_write_register(intelhaddata, AUD_CNTL_ST, ctrl_state.regval); |
5dab11d8 | 591 | |
b556290f | 592 | ca = had_channel_allocation(intelhaddata, channels); |
964ca808 PLB |
593 | if (intelhaddata->dp_output) { |
594 | info_frame = DP_INFO_FRAME_WORD1; | |
36ed3466 | 595 | frame2.regval = (substream->runtime->channels - 1) | (ca << 24); |
964ca808 PLB |
596 | } else { |
597 | info_frame = HDMI_INFO_FRAME_WORD1; | |
7ceba75f | 598 | frame2.regx.chnl_cnt = substream->runtime->channels - 1; |
36ed3466 | 599 | frame3.regx.chnl_alloc = ca; |
5dab11d8 | 600 | |
2e52f5e5 | 601 | /* Calculte the byte wide checksum for all valid DIP words */ |
964ca808 | 602 | for (i = 0; i < BYTES_PER_WORD; i++) |
7ceba75f | 603 | checksum += (info_frame >> (i * 8)) & 0xff; |
964ca808 | 604 | for (i = 0; i < BYTES_PER_WORD; i++) |
7ceba75f | 605 | checksum += (frame2.regval >> (i * 8)) & 0xff; |
964ca808 | 606 | for (i = 0; i < BYTES_PER_WORD; i++) |
7ceba75f | 607 | checksum += (frame3.regval >> (i * 8)) & 0xff; |
5dab11d8 | 608 | |
7ceba75f | 609 | frame2.regx.chksum = -(checksum); |
964ca808 | 610 | } |
5dab11d8 | 611 | |
4151ee84 | 612 | had_write_register(intelhaddata, AUD_HDMIW_INFOFR, info_frame); |
7ceba75f TI |
613 | had_write_register(intelhaddata, AUD_HDMIW_INFOFR, frame2.regval); |
614 | had_write_register(intelhaddata, AUD_HDMIW_INFOFR, frame3.regval); | |
5dab11d8 JA |
615 | |
616 | /* program remaining DIP words with zero */ | |
617 | for (i = 0; i < HAD_MAX_DIP_WORDS-VALID_DIP_WORDS; i++) | |
4151ee84 | 618 | had_write_register(intelhaddata, AUD_HDMIW_INFOFR, 0x0); |
5dab11d8 | 619 | |
7ceba75f TI |
620 | ctrl_state.regx.dip_freq = 1; |
621 | ctrl_state.regx.dip_en_sta = 1; | |
622 | had_write_register(intelhaddata, AUD_CNTL_ST, ctrl_state.regval); | |
5dab11d8 JA |
623 | } |
624 | ||
964ca808 PLB |
625 | static int had_calculate_maud_value(u32 aud_samp_freq, u32 link_rate) |
626 | { | |
627 | u32 maud_val; | |
628 | ||
2e52f5e5 | 629 | /* Select maud according to DP 1.2 spec */ |
964ca808 PLB |
630 | if (link_rate == DP_2_7_GHZ) { |
631 | switch (aud_samp_freq) { | |
632 | case AUD_SAMPLE_RATE_32: | |
633 | maud_val = AUD_SAMPLE_RATE_32_DP_2_7_MAUD_VAL; | |
634 | break; | |
635 | ||
636 | case AUD_SAMPLE_RATE_44_1: | |
637 | maud_val = AUD_SAMPLE_RATE_44_1_DP_2_7_MAUD_VAL; | |
638 | break; | |
639 | ||
640 | case AUD_SAMPLE_RATE_48: | |
641 | maud_val = AUD_SAMPLE_RATE_48_DP_2_7_MAUD_VAL; | |
642 | break; | |
643 | ||
644 | case AUD_SAMPLE_RATE_88_2: | |
645 | maud_val = AUD_SAMPLE_RATE_88_2_DP_2_7_MAUD_VAL; | |
646 | break; | |
647 | ||
648 | case AUD_SAMPLE_RATE_96: | |
649 | maud_val = AUD_SAMPLE_RATE_96_DP_2_7_MAUD_VAL; | |
650 | break; | |
651 | ||
652 | case AUD_SAMPLE_RATE_176_4: | |
653 | maud_val = AUD_SAMPLE_RATE_176_4_DP_2_7_MAUD_VAL; | |
654 | break; | |
655 | ||
656 | case HAD_MAX_RATE: | |
657 | maud_val = HAD_MAX_RATE_DP_2_7_MAUD_VAL; | |
658 | break; | |
659 | ||
660 | default: | |
661 | maud_val = -EINVAL; | |
662 | break; | |
663 | } | |
664 | } else if (link_rate == DP_1_62_GHZ) { | |
665 | switch (aud_samp_freq) { | |
666 | case AUD_SAMPLE_RATE_32: | |
667 | maud_val = AUD_SAMPLE_RATE_32_DP_1_62_MAUD_VAL; | |
668 | break; | |
669 | ||
670 | case AUD_SAMPLE_RATE_44_1: | |
671 | maud_val = AUD_SAMPLE_RATE_44_1_DP_1_62_MAUD_VAL; | |
672 | break; | |
673 | ||
674 | case AUD_SAMPLE_RATE_48: | |
675 | maud_val = AUD_SAMPLE_RATE_48_DP_1_62_MAUD_VAL; | |
676 | break; | |
677 | ||
678 | case AUD_SAMPLE_RATE_88_2: | |
679 | maud_val = AUD_SAMPLE_RATE_88_2_DP_1_62_MAUD_VAL; | |
680 | break; | |
681 | ||
682 | case AUD_SAMPLE_RATE_96: | |
683 | maud_val = AUD_SAMPLE_RATE_96_DP_1_62_MAUD_VAL; | |
684 | break; | |
685 | ||
686 | case AUD_SAMPLE_RATE_176_4: | |
687 | maud_val = AUD_SAMPLE_RATE_176_4_DP_1_62_MAUD_VAL; | |
688 | break; | |
689 | ||
690 | case HAD_MAX_RATE: | |
691 | maud_val = HAD_MAX_RATE_DP_1_62_MAUD_VAL; | |
692 | break; | |
693 | ||
694 | default: | |
695 | maud_val = -EINVAL; | |
696 | break; | |
697 | } | |
698 | } else | |
699 | maud_val = -EINVAL; | |
700 | ||
701 | return maud_val; | |
702 | } | |
703 | ||
76296ef0 | 704 | /* |
44684f61 | 705 | * Program HDMI audio CTS value |
5dab11d8 JA |
706 | * |
707 | * @aud_samp_freq: sampling frequency of audio data | |
708 | * @tmds: sampling frequency of the display data | |
b556290f | 709 | * @link_rate: DP link rate |
5dab11d8 | 710 | * @n_param: N value, depends on aud_samp_freq |
b556290f | 711 | * @intelhaddata: substream private data |
5dab11d8 JA |
712 | * |
713 | * Program CTS register based on the audio and display sampling frequency | |
714 | */ | |
b556290f TI |
715 | static void had_prog_cts(u32 aud_samp_freq, u32 tmds, u32 link_rate, |
716 | u32 n_param, struct snd_intelhad *intelhaddata) | |
5dab11d8 JA |
717 | { |
718 | u32 cts_val; | |
719 | u64 dividend, divisor; | |
720 | ||
964ca808 PLB |
721 | if (intelhaddata->dp_output) { |
722 | /* Substitute cts_val with Maud according to DP 1.2 spec*/ | |
723 | cts_val = had_calculate_maud_value(aud_samp_freq, link_rate); | |
724 | } else { | |
725 | /* Calculate CTS according to HDMI 1.3a spec*/ | |
726 | dividend = (u64)tmds * n_param*1000; | |
727 | divisor = 128 * aud_samp_freq; | |
728 | cts_val = div64_u64(dividend, divisor); | |
729 | } | |
c75b0476 | 730 | dev_dbg(intelhaddata->dev, "TMDS value=%d, N value=%d, CTS Value=%d\n", |
964ca808 | 731 | tmds, n_param, cts_val); |
79dda75a | 732 | had_write_register(intelhaddata, AUD_HDMI_CTS, (BIT(24) | cts_val)); |
5dab11d8 JA |
733 | } |
734 | ||
735 | static int had_calculate_n_value(u32 aud_samp_freq) | |
736 | { | |
2e52f5e5 | 737 | int n_val; |
5dab11d8 JA |
738 | |
739 | /* Select N according to HDMI 1.3a spec*/ | |
740 | switch (aud_samp_freq) { | |
741 | case AUD_SAMPLE_RATE_32: | |
742 | n_val = 4096; | |
2e52f5e5 | 743 | break; |
5dab11d8 JA |
744 | |
745 | case AUD_SAMPLE_RATE_44_1: | |
746 | n_val = 6272; | |
2e52f5e5 | 747 | break; |
5dab11d8 JA |
748 | |
749 | case AUD_SAMPLE_RATE_48: | |
750 | n_val = 6144; | |
2e52f5e5 | 751 | break; |
5dab11d8 JA |
752 | |
753 | case AUD_SAMPLE_RATE_88_2: | |
754 | n_val = 12544; | |
2e52f5e5 | 755 | break; |
5dab11d8 JA |
756 | |
757 | case AUD_SAMPLE_RATE_96: | |
758 | n_val = 12288; | |
2e52f5e5 | 759 | break; |
5dab11d8 JA |
760 | |
761 | case AUD_SAMPLE_RATE_176_4: | |
762 | n_val = 25088; | |
2e52f5e5 | 763 | break; |
5dab11d8 JA |
764 | |
765 | case HAD_MAX_RATE: | |
766 | n_val = 24576; | |
2e52f5e5 | 767 | break; |
5dab11d8 JA |
768 | |
769 | default: | |
770 | n_val = -EINVAL; | |
2e52f5e5 | 771 | break; |
5dab11d8 JA |
772 | } |
773 | return n_val; | |
774 | } | |
775 | ||
76296ef0 | 776 | /* |
44684f61 | 777 | * Program HDMI audio N value |
5dab11d8 JA |
778 | * |
779 | * @aud_samp_freq: sampling frequency of audio data | |
780 | * @n_param: N value, depends on aud_samp_freq | |
b556290f | 781 | * @intelhaddata: substream private data |
5dab11d8 JA |
782 | * |
783 | * This function is called in the prepare callback. | |
784 | * It programs based on the audio and display sampling frequency | |
785 | */ | |
b556290f TI |
786 | static int had_prog_n(u32 aud_samp_freq, u32 *n_param, |
787 | struct snd_intelhad *intelhaddata) | |
5dab11d8 | 788 | { |
2e52f5e5 | 789 | int n_val; |
5dab11d8 | 790 | |
964ca808 PLB |
791 | if (intelhaddata->dp_output) { |
792 | /* | |
793 | * According to DP specs, Maud and Naud values hold | |
794 | * a relationship, which is stated as: | |
795 | * Maud/Naud = 512 * fs / f_LS_Clk | |
796 | * where, fs is the sampling frequency of the audio stream | |
797 | * and Naud is 32768 for Async clock. | |
798 | */ | |
799 | ||
800 | n_val = DP_NAUD_VAL; | |
801 | } else | |
802 | n_val = had_calculate_n_value(aud_samp_freq); | |
5dab11d8 JA |
803 | |
804 | if (n_val < 0) | |
805 | return n_val; | |
806 | ||
79dda75a | 807 | had_write_register(intelhaddata, AUD_N_ENABLE, (BIT(24) | n_val)); |
5dab11d8 JA |
808 | *n_param = n_val; |
809 | return 0; | |
810 | } | |
811 | ||
e1b239f3 TI |
812 | /* |
813 | * PCM ring buffer handling | |
814 | * | |
815 | * The hardware provides a ring buffer with the fixed 4 buffer descriptors | |
816 | * (BDs). The driver maps these 4 BDs onto the PCM ring buffer. The mapping | |
817 | * moves at each period elapsed. The below illustrates how it works: | |
818 | * | |
819 | * At time=0 | |
820 | * PCM | 0 | 1 | 2 | 3 | 4 | 5 | .... |n-1| | |
821 | * BD | 0 | 1 | 2 | 3 | | |
822 | * | |
823 | * At time=1 (period elapsed) | |
824 | * PCM | 0 | 1 | 2 | 3 | 4 | 5 | .... |n-1| | |
825 | * BD | 1 | 2 | 3 | 0 | | |
826 | * | |
827 | * At time=2 (second period elapsed) | |
828 | * PCM | 0 | 1 | 2 | 3 | 4 | 5 | .... |n-1| | |
829 | * BD | 2 | 3 | 0 | 1 | | |
830 | * | |
831 | * The bd_head field points to the index of the BD to be read. It's also the | |
832 | * position to be filled at next. The pcm_head and the pcm_filled fields | |
833 | * point to the indices of the current position and of the next position to | |
834 | * be filled, respectively. For PCM buffer there are both _head and _filled | |
835 | * because they may be difference when nperiods > 4. For example, in the | |
836 | * example above at t=1, bd_head=1 and pcm_head=1 while pcm_filled=5: | |
837 | * | |
838 | * pcm_head (=1) --v v-- pcm_filled (=5) | |
839 | * PCM | 0 | 1 | 2 | 3 | 4 | 5 | .... |n-1| | |
840 | * BD | 1 | 2 | 3 | 0 | | |
841 | * bd_head (=1) --^ ^-- next to fill (= bd_head) | |
842 | * | |
843 | * For nperiods < 4, the remaining BDs out of 4 are marked as invalid, so that | |
844 | * the hardware skips those BDs in the loop. | |
8d48c016 TI |
845 | * |
846 | * An exceptional setup is the case with nperiods=1. Since we have to update | |
847 | * BDs after finishing one BD processing, we'd need at least two BDs, where | |
848 | * both BDs point to the same content, the same address, the same size of the | |
849 | * whole PCM buffer. | |
e1b239f3 TI |
850 | */ |
851 | ||
852 | #define AUD_BUF_ADDR(x) (AUD_BUF_A_ADDR + (x) * HAD_REG_WIDTH) | |
853 | #define AUD_BUF_LEN(x) (AUD_BUF_A_LENGTH + (x) * HAD_REG_WIDTH) | |
854 | ||
855 | /* Set up a buffer descriptor at the "filled" position */ | |
856 | static void had_prog_bd(struct snd_pcm_substream *substream, | |
857 | struct snd_intelhad *intelhaddata) | |
858 | { | |
859 | int idx = intelhaddata->bd_head; | |
860 | int ofs = intelhaddata->pcmbuf_filled * intelhaddata->period_bytes; | |
861 | u32 addr = substream->runtime->dma_addr + ofs; | |
862 | ||
e8de9859 TI |
863 | addr |= AUD_BUF_VALID; |
864 | if (!substream->runtime->no_period_wakeup) | |
865 | addr |= AUD_BUF_INTR_EN; | |
e1b239f3 TI |
866 | had_write_register(intelhaddata, AUD_BUF_ADDR(idx), addr); |
867 | had_write_register(intelhaddata, AUD_BUF_LEN(idx), | |
868 | intelhaddata->period_bytes); | |
869 | ||
870 | /* advance the indices to the next */ | |
871 | intelhaddata->bd_head++; | |
872 | intelhaddata->bd_head %= intelhaddata->num_bds; | |
873 | intelhaddata->pcmbuf_filled++; | |
874 | intelhaddata->pcmbuf_filled %= substream->runtime->periods; | |
875 | } | |
876 | ||
877 | /* invalidate a buffer descriptor with the given index */ | |
878 | static void had_invalidate_bd(struct snd_intelhad *intelhaddata, | |
879 | int idx) | |
880 | { | |
881 | had_write_register(intelhaddata, AUD_BUF_ADDR(idx), 0); | |
882 | had_write_register(intelhaddata, AUD_BUF_LEN(idx), 0); | |
883 | } | |
884 | ||
885 | /* Initial programming of ring buffer */ | |
886 | static void had_init_ringbuf(struct snd_pcm_substream *substream, | |
887 | struct snd_intelhad *intelhaddata) | |
888 | { | |
889 | struct snd_pcm_runtime *runtime = substream->runtime; | |
890 | int i, num_periods; | |
891 | ||
892 | num_periods = runtime->periods; | |
893 | intelhaddata->num_bds = min(num_periods, HAD_NUM_OF_RING_BUFS); | |
8d48c016 TI |
894 | /* set the minimum 2 BDs for num_periods=1 */ |
895 | intelhaddata->num_bds = max(intelhaddata->num_bds, 2U); | |
e1b239f3 TI |
896 | intelhaddata->period_bytes = |
897 | frames_to_bytes(runtime, runtime->period_size); | |
898 | WARN_ON(intelhaddata->period_bytes & 0x3f); | |
899 | ||
900 | intelhaddata->bd_head = 0; | |
901 | intelhaddata->pcmbuf_head = 0; | |
902 | intelhaddata->pcmbuf_filled = 0; | |
903 | ||
904 | for (i = 0; i < HAD_NUM_OF_RING_BUFS; i++) { | |
8d48c016 | 905 | if (i < intelhaddata->num_bds) |
e1b239f3 TI |
906 | had_prog_bd(substream, intelhaddata); |
907 | else /* invalidate the rest */ | |
908 | had_invalidate_bd(intelhaddata, i); | |
909 | } | |
910 | ||
911 | intelhaddata->bd_head = 0; /* reset at head again before starting */ | |
912 | } | |
913 | ||
914 | /* process a bd, advance to the next */ | |
915 | static void had_advance_ringbuf(struct snd_pcm_substream *substream, | |
916 | struct snd_intelhad *intelhaddata) | |
917 | { | |
918 | int num_periods = substream->runtime->periods; | |
919 | ||
920 | /* reprogram the next buffer */ | |
921 | had_prog_bd(substream, intelhaddata); | |
922 | ||
923 | /* proceed to next */ | |
924 | intelhaddata->pcmbuf_head++; | |
925 | intelhaddata->pcmbuf_head %= num_periods; | |
926 | } | |
927 | ||
928 | /* process the current BD(s); | |
929 | * returns the current PCM buffer byte position, or -EPIPE for underrun. | |
930 | */ | |
931 | static int had_process_ringbuf(struct snd_pcm_substream *substream, | |
932 | struct snd_intelhad *intelhaddata) | |
933 | { | |
934 | int len, processed; | |
935 | unsigned long flags; | |
936 | ||
937 | processed = 0; | |
938 | spin_lock_irqsave(&intelhaddata->had_spinlock, flags); | |
939 | for (;;) { | |
940 | /* get the remaining bytes on the buffer */ | |
941 | had_read_register(intelhaddata, | |
942 | AUD_BUF_LEN(intelhaddata->bd_head), | |
943 | &len); | |
944 | if (len < 0 || len > intelhaddata->period_bytes) { | |
945 | dev_dbg(intelhaddata->dev, "Invalid buf length %d\n", | |
946 | len); | |
947 | len = -EPIPE; | |
948 | goto out; | |
949 | } | |
950 | ||
951 | if (len > 0) /* OK, this is the current buffer */ | |
952 | break; | |
953 | ||
954 | /* len=0 => already empty, check the next buffer */ | |
955 | if (++processed >= intelhaddata->num_bds) { | |
956 | len = -EPIPE; /* all empty? - report underrun */ | |
957 | goto out; | |
958 | } | |
959 | had_advance_ringbuf(substream, intelhaddata); | |
960 | } | |
961 | ||
962 | len = intelhaddata->period_bytes - len; | |
963 | len += intelhaddata->period_bytes * intelhaddata->pcmbuf_head; | |
964 | out: | |
965 | spin_unlock_irqrestore(&intelhaddata->had_spinlock, flags); | |
966 | return len; | |
967 | } | |
968 | ||
969 | /* called from irq handler */ | |
970 | static void had_process_buffer_done(struct snd_intelhad *intelhaddata) | |
971 | { | |
972 | struct snd_pcm_substream *substream; | |
973 | ||
e1b239f3 TI |
974 | substream = had_substream_get(intelhaddata); |
975 | if (!substream) | |
976 | return; /* no stream? - bail out */ | |
977 | ||
be9a2e93 TI |
978 | if (!intelhaddata->connected) { |
979 | snd_pcm_stop_xrun(substream); | |
980 | goto out; /* disconnected? - bail out */ | |
981 | } | |
982 | ||
e1b239f3 TI |
983 | /* process or stop the stream */ |
984 | if (had_process_ringbuf(substream, intelhaddata) < 0) | |
985 | snd_pcm_stop_xrun(substream); | |
986 | else | |
987 | snd_pcm_period_elapsed(substream); | |
988 | ||
be9a2e93 | 989 | out: |
e1b239f3 TI |
990 | had_substream_put(intelhaddata); |
991 | } | |
992 | ||
e1b239f3 TI |
993 | /* |
994 | * The interrupt status 'sticky' bits might not be cleared by | |
995 | * setting '1' to that bit once... | |
996 | */ | |
997 | static void wait_clear_underrun_bit(struct snd_intelhad *intelhaddata) | |
998 | { | |
999 | int i; | |
1000 | u32 val; | |
1001 | ||
e2acecf2 | 1002 | for (i = 0; i < 100; i++) { |
e1b239f3 TI |
1003 | /* clear bit30, 31 AUD_HDMI_STATUS */ |
1004 | had_read_register(intelhaddata, AUD_HDMI_STATUS, &val); | |
77531bee | 1005 | if (!(val & AUD_HDMI_STATUS_MASK_UNDERRUN)) |
e1b239f3 | 1006 | return; |
e2acecf2 TI |
1007 | udelay(100); |
1008 | cond_resched(); | |
e1b239f3 TI |
1009 | had_write_register(intelhaddata, AUD_HDMI_STATUS, val); |
1010 | } | |
1011 | dev_err(intelhaddata->dev, "Unable to clear UNDERRUN bits\n"); | |
1012 | } | |
1013 | ||
e2acecf2 TI |
1014 | /* Perform some reset procedure but only when need_reset is set; |
1015 | * this is called from prepare or hw_free callbacks once after trigger STOP | |
1016 | * or underrun has been processed in order to settle down the h/w state. | |
1017 | */ | |
1018 | static void had_do_reset(struct snd_intelhad *intelhaddata) | |
5dab11d8 | 1019 | { |
28ed125b | 1020 | if (!intelhaddata->need_reset || !intelhaddata->connected) |
e2acecf2 | 1021 | return; |
5dab11d8 | 1022 | |
5dab11d8 | 1023 | /* Reset buffer pointers */ |
f4566aa1 | 1024 | had_reset_audio(intelhaddata); |
e1b239f3 | 1025 | wait_clear_underrun_bit(intelhaddata); |
e2acecf2 TI |
1026 | intelhaddata->need_reset = false; |
1027 | } | |
e1b239f3 | 1028 | |
e2acecf2 TI |
1029 | /* called from irq handler */ |
1030 | static void had_process_buffer_underrun(struct snd_intelhad *intelhaddata) | |
1031 | { | |
1032 | struct snd_pcm_substream *substream; | |
e1b239f3 TI |
1033 | |
1034 | /* Report UNDERRUN error to above layers */ | |
1035 | substream = had_substream_get(intelhaddata); | |
1036 | if (substream) { | |
1037 | snd_pcm_stop_xrun(substream); | |
1038 | had_substream_put(intelhaddata); | |
1039 | } | |
e2acecf2 | 1040 | intelhaddata->need_reset = true; |
5dab11d8 JA |
1041 | } |
1042 | ||
2e52f5e5 | 1043 | /* |
44684f61 | 1044 | * ALSA PCM open callback |
5dab11d8 | 1045 | */ |
b556290f | 1046 | static int had_pcm_open(struct snd_pcm_substream *substream) |
5dab11d8 JA |
1047 | { |
1048 | struct snd_intelhad *intelhaddata; | |
1049 | struct snd_pcm_runtime *runtime; | |
5dab11d8 JA |
1050 | int retval; |
1051 | ||
5dab11d8 | 1052 | intelhaddata = snd_pcm_substream_chip(substream); |
5dab11d8 JA |
1053 | runtime = substream->runtime; |
1054 | ||
182cdf23 | 1055 | pm_runtime_get_sync(intelhaddata->dev); |
5dab11d8 | 1056 | |
5dab11d8 | 1057 | /* set the runtime hw parameter with local snd_pcm_hardware struct */ |
b556290f | 1058 | runtime->hw = had_pcm_hardware; |
5dab11d8 | 1059 | |
5dab11d8 JA |
1060 | retval = snd_pcm_hw_constraint_integer(runtime, |
1061 | SNDRV_PCM_HW_PARAM_PERIODS); | |
1062 | if (retval < 0) | |
fa5dfe6a | 1063 | goto error; |
5dab11d8 JA |
1064 | |
1065 | /* Make sure, that the period size is always aligned | |
1066 | * 64byte boundary | |
1067 | */ | |
1068 | retval = snd_pcm_hw_constraint_step(substream->runtime, 0, | |
1069 | SNDRV_PCM_HW_PARAM_PERIOD_BYTES, 64); | |
73997b05 | 1070 | if (retval < 0) |
fa5dfe6a | 1071 | goto error; |
5dab11d8 | 1072 | |
85bd8748 TI |
1073 | retval = snd_pcm_hw_constraint_msbits(runtime, 0, 32, 24); |
1074 | if (retval < 0) | |
1075 | goto error; | |
1076 | ||
73997b05 | 1077 | /* expose PCM substream */ |
313d9f28 TI |
1078 | spin_lock_irq(&intelhaddata->had_spinlock); |
1079 | intelhaddata->stream_info.substream = substream; | |
1080 | intelhaddata->stream_info.substream_refcount++; | |
1081 | spin_unlock_irq(&intelhaddata->had_spinlock); | |
1082 | ||
5dab11d8 | 1083 | return retval; |
fa5dfe6a | 1084 | error: |
5dab11d8 | 1085 | pm_runtime_put(intelhaddata->dev); |
5dab11d8 JA |
1086 | return retval; |
1087 | } | |
1088 | ||
2e52f5e5 | 1089 | /* |
44684f61 | 1090 | * ALSA PCM close callback |
5dab11d8 | 1091 | */ |
b556290f | 1092 | static int had_pcm_close(struct snd_pcm_substream *substream) |
5dab11d8 JA |
1093 | { |
1094 | struct snd_intelhad *intelhaddata; | |
5dab11d8 | 1095 | |
5dab11d8 | 1096 | intelhaddata = snd_pcm_substream_chip(substream); |
5dab11d8 | 1097 | |
73997b05 | 1098 | /* unreference and sync with the pending PCM accesses */ |
313d9f28 TI |
1099 | spin_lock_irq(&intelhaddata->had_spinlock); |
1100 | intelhaddata->stream_info.substream = NULL; | |
1101 | intelhaddata->stream_info.substream_refcount--; | |
1102 | while (intelhaddata->stream_info.substream_refcount > 0) { | |
1103 | spin_unlock_irq(&intelhaddata->had_spinlock); | |
1104 | cpu_relax(); | |
1105 | spin_lock_irq(&intelhaddata->had_spinlock); | |
1106 | } | |
1107 | spin_unlock_irq(&intelhaddata->had_spinlock); | |
5dab11d8 | 1108 | |
5dab11d8 JA |
1109 | pm_runtime_put(intelhaddata->dev); |
1110 | return 0; | |
1111 | } | |
1112 | ||
2e52f5e5 | 1113 | /* |
44684f61 | 1114 | * ALSA PCM hw_params callback |
5dab11d8 | 1115 | */ |
b556290f TI |
1116 | static int had_pcm_hw_params(struct snd_pcm_substream *substream, |
1117 | struct snd_pcm_hw_params *hw_params) | |
5dab11d8 | 1118 | { |
c75b0476 | 1119 | struct snd_intelhad *intelhaddata; |
5dab11d8 JA |
1120 | unsigned long addr; |
1121 | int pages, buf_size, retval; | |
1122 | ||
c75b0476 | 1123 | intelhaddata = snd_pcm_substream_chip(substream); |
5dab11d8 JA |
1124 | buf_size = params_buffer_bytes(hw_params); |
1125 | retval = snd_pcm_lib_malloc_pages(substream, buf_size); | |
1126 | if (retval < 0) | |
1127 | return retval; | |
c75b0476 TI |
1128 | dev_dbg(intelhaddata->dev, "%s:allocated memory = %d\n", |
1129 | __func__, buf_size); | |
5dab11d8 JA |
1130 | /* mark the pages as uncached region */ |
1131 | addr = (unsigned long) substream->runtime->dma_area; | |
1132 | pages = (substream->runtime->dma_bytes + PAGE_SIZE - 1) / PAGE_SIZE; | |
1133 | retval = set_memory_uc(addr, pages); | |
1134 | if (retval) { | |
c75b0476 TI |
1135 | dev_err(intelhaddata->dev, "set_memory_uc failed.Error:%d\n", |
1136 | retval); | |
5dab11d8 JA |
1137 | return retval; |
1138 | } | |
1139 | memset(substream->runtime->dma_area, 0, buf_size); | |
1140 | ||
1141 | return retval; | |
1142 | } | |
1143 | ||
2e52f5e5 | 1144 | /* |
44684f61 | 1145 | * ALSA PCM hw_free callback |
5dab11d8 | 1146 | */ |
b556290f | 1147 | static int had_pcm_hw_free(struct snd_pcm_substream *substream) |
5dab11d8 | 1148 | { |
e2acecf2 | 1149 | struct snd_intelhad *intelhaddata; |
5dab11d8 JA |
1150 | unsigned long addr; |
1151 | u32 pages; | |
1152 | ||
e2acecf2 TI |
1153 | intelhaddata = snd_pcm_substream_chip(substream); |
1154 | had_do_reset(intelhaddata); | |
1155 | ||
5dab11d8 JA |
1156 | /* mark back the pages as cached/writeback region before the free */ |
1157 | if (substream->runtime->dma_area != NULL) { | |
1158 | addr = (unsigned long) substream->runtime->dma_area; | |
1159 | pages = (substream->runtime->dma_bytes + PAGE_SIZE - 1) / | |
1160 | PAGE_SIZE; | |
1161 | set_memory_wb(addr, pages); | |
1162 | return snd_pcm_lib_free_pages(substream); | |
1163 | } | |
1164 | return 0; | |
1165 | } | |
1166 | ||
2e52f5e5 | 1167 | /* |
44684f61 | 1168 | * ALSA PCM trigger callback |
5dab11d8 | 1169 | */ |
b556290f | 1170 | static int had_pcm_trigger(struct snd_pcm_substream *substream, int cmd) |
5dab11d8 | 1171 | { |
da864809 | 1172 | int retval = 0; |
5dab11d8 | 1173 | struct snd_intelhad *intelhaddata; |
5dab11d8 | 1174 | |
5dab11d8 | 1175 | intelhaddata = snd_pcm_substream_chip(substream); |
5dab11d8 | 1176 | |
df42cb49 | 1177 | spin_lock(&intelhaddata->had_spinlock); |
5dab11d8 JA |
1178 | switch (cmd) { |
1179 | case SNDRV_PCM_TRIGGER_START: | |
182cdf23 TI |
1180 | case SNDRV_PCM_TRIGGER_PAUSE_RELEASE: |
1181 | case SNDRV_PCM_TRIGGER_RESUME: | |
5dab11d8 | 1182 | /* Enable Audio */ |
075a1d46 | 1183 | had_ack_irqs(intelhaddata); /* FIXME: do we need this? */ |
40ce4b5d | 1184 | had_enable_audio(intelhaddata, true); |
5dab11d8 JA |
1185 | break; |
1186 | ||
1187 | case SNDRV_PCM_TRIGGER_STOP: | |
182cdf23 | 1188 | case SNDRV_PCM_TRIGGER_PAUSE_PUSH: |
5dab11d8 | 1189 | /* Disable Audio */ |
40ce4b5d | 1190 | had_enable_audio(intelhaddata, false); |
e2acecf2 | 1191 | intelhaddata->need_reset = true; |
5dab11d8 JA |
1192 | break; |
1193 | ||
1194 | default: | |
1195 | retval = -EINVAL; | |
1196 | } | |
df42cb49 | 1197 | spin_unlock(&intelhaddata->had_spinlock); |
5dab11d8 JA |
1198 | return retval; |
1199 | } | |
1200 | ||
2e52f5e5 | 1201 | /* |
44684f61 | 1202 | * ALSA PCM prepare callback |
5dab11d8 | 1203 | */ |
b556290f | 1204 | static int had_pcm_prepare(struct snd_pcm_substream *substream) |
5dab11d8 JA |
1205 | { |
1206 | int retval; | |
1207 | u32 disp_samp_freq, n_param; | |
964ca808 | 1208 | u32 link_rate = 0; |
5dab11d8 JA |
1209 | struct snd_intelhad *intelhaddata; |
1210 | struct snd_pcm_runtime *runtime; | |
5dab11d8 | 1211 | |
5dab11d8 JA |
1212 | intelhaddata = snd_pcm_substream_chip(substream); |
1213 | runtime = substream->runtime; | |
5dab11d8 | 1214 | |
c75b0476 | 1215 | dev_dbg(intelhaddata->dev, "period_size=%d\n", |
5dab11d8 | 1216 | (int)frames_to_bytes(runtime, runtime->period_size)); |
c75b0476 TI |
1217 | dev_dbg(intelhaddata->dev, "periods=%d\n", runtime->periods); |
1218 | dev_dbg(intelhaddata->dev, "buffer_size=%d\n", | |
1219 | (int)snd_pcm_lib_buffer_bytes(substream)); | |
1220 | dev_dbg(intelhaddata->dev, "rate=%d\n", runtime->rate); | |
1221 | dev_dbg(intelhaddata->dev, "channels=%d\n", runtime->channels); | |
5dab11d8 | 1222 | |
e2acecf2 TI |
1223 | had_do_reset(intelhaddata); |
1224 | ||
5dab11d8 | 1225 | /* Get N value in KHz */ |
da864809 | 1226 | disp_samp_freq = intelhaddata->tmds_clock_speed; |
5dab11d8 | 1227 | |
b556290f | 1228 | retval = had_prog_n(substream->runtime->rate, &n_param, intelhaddata); |
5dab11d8 | 1229 | if (retval) { |
c75b0476 TI |
1230 | dev_err(intelhaddata->dev, |
1231 | "programming N value failed %#x\n", retval); | |
5dab11d8 JA |
1232 | goto prep_end; |
1233 | } | |
964ca808 PLB |
1234 | |
1235 | if (intelhaddata->dp_output) | |
da864809 | 1236 | link_rate = intelhaddata->link_rate; |
964ca808 | 1237 | |
b556290f TI |
1238 | had_prog_cts(substream->runtime->rate, disp_samp_freq, link_rate, |
1239 | n_param, intelhaddata); | |
5dab11d8 | 1240 | |
b556290f | 1241 | had_prog_dip(substream, intelhaddata); |
5dab11d8 | 1242 | |
b556290f | 1243 | retval = had_init_audio_ctrl(substream, intelhaddata); |
5dab11d8 JA |
1244 | |
1245 | /* Prog buffer address */ | |
e1b239f3 | 1246 | had_init_ringbuf(substream, intelhaddata); |
5dab11d8 JA |
1247 | |
1248 | /* | |
1249 | * Program channel mapping in following order: | |
1250 | * FL, FR, C, LFE, RL, RR | |
1251 | */ | |
1252 | ||
79dda75a | 1253 | had_write_register(intelhaddata, AUD_BUF_CH_SWAP, SWAP_LFE_CENTER); |
5dab11d8 JA |
1254 | |
1255 | prep_end: | |
1256 | return retval; | |
1257 | } | |
1258 | ||
2e52f5e5 | 1259 | /* |
44684f61 | 1260 | * ALSA PCM pointer callback |
5dab11d8 | 1261 | */ |
b556290f | 1262 | static snd_pcm_uframes_t had_pcm_pointer(struct snd_pcm_substream *substream) |
5dab11d8 JA |
1263 | { |
1264 | struct snd_intelhad *intelhaddata; | |
e1b239f3 | 1265 | int len; |
5dab11d8 | 1266 | |
5dab11d8 JA |
1267 | intelhaddata = snd_pcm_substream_chip(substream); |
1268 | ||
91b0cb0c | 1269 | if (!intelhaddata->connected) |
79f439ea TI |
1270 | return SNDRV_PCM_POS_XRUN; |
1271 | ||
e1b239f3 TI |
1272 | len = had_process_ringbuf(substream, intelhaddata); |
1273 | if (len < 0) | |
1274 | return SNDRV_PCM_POS_XRUN; | |
8d48c016 TI |
1275 | len = bytes_to_frames(substream->runtime, len); |
1276 | /* wrapping may happen when periods=1 */ | |
1277 | len %= substream->runtime->buffer_size; | |
1278 | return len; | |
5dab11d8 JA |
1279 | } |
1280 | ||
2e52f5e5 | 1281 | /* |
44684f61 | 1282 | * ALSA PCM mmap callback |
5dab11d8 | 1283 | */ |
b556290f TI |
1284 | static int had_pcm_mmap(struct snd_pcm_substream *substream, |
1285 | struct vm_area_struct *vma) | |
5dab11d8 | 1286 | { |
5dab11d8 JA |
1287 | vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot); |
1288 | return remap_pfn_range(vma, vma->vm_start, | |
1289 | substream->dma_buffer.addr >> PAGE_SHIFT, | |
1290 | vma->vm_end - vma->vm_start, vma->vm_page_prot); | |
1291 | } | |
1292 | ||
73997b05 TI |
1293 | /* |
1294 | * ALSA PCM ops | |
1295 | */ | |
b556290f TI |
1296 | static const struct snd_pcm_ops had_pcm_ops = { |
1297 | .open = had_pcm_open, | |
1298 | .close = had_pcm_close, | |
73997b05 | 1299 | .ioctl = snd_pcm_lib_ioctl, |
b556290f TI |
1300 | .hw_params = had_pcm_hw_params, |
1301 | .hw_free = had_pcm_hw_free, | |
1302 | .prepare = had_pcm_prepare, | |
1303 | .trigger = had_pcm_trigger, | |
1304 | .pointer = had_pcm_pointer, | |
1305 | .mmap = had_pcm_mmap, | |
73997b05 TI |
1306 | }; |
1307 | ||
8f8d1d7f | 1308 | /* process mode change of the running stream; called in mutex */ |
b556290f | 1309 | static int had_process_mode_change(struct snd_intelhad *intelhaddata) |
5dab11d8 | 1310 | { |
da864809 | 1311 | struct snd_pcm_substream *substream; |
5dab11d8 JA |
1312 | int retval = 0; |
1313 | u32 disp_samp_freq, n_param; | |
964ca808 | 1314 | u32 link_rate = 0; |
5dab11d8 | 1315 | |
313d9f28 TI |
1316 | substream = had_substream_get(intelhaddata); |
1317 | if (!substream) | |
da864809 | 1318 | return 0; |
5dab11d8 JA |
1319 | |
1320 | /* Disable Audio */ | |
40ce4b5d | 1321 | had_enable_audio(intelhaddata, false); |
5dab11d8 JA |
1322 | |
1323 | /* Update CTS value */ | |
da864809 | 1324 | disp_samp_freq = intelhaddata->tmds_clock_speed; |
5dab11d8 | 1325 | |
b556290f | 1326 | retval = had_prog_n(substream->runtime->rate, &n_param, intelhaddata); |
5dab11d8 | 1327 | if (retval) { |
c75b0476 TI |
1328 | dev_err(intelhaddata->dev, |
1329 | "programming N value failed %#x\n", retval); | |
5dab11d8 JA |
1330 | goto out; |
1331 | } | |
964ca808 PLB |
1332 | |
1333 | if (intelhaddata->dp_output) | |
da864809 | 1334 | link_rate = intelhaddata->link_rate; |
964ca808 | 1335 | |
b556290f TI |
1336 | had_prog_cts(substream->runtime->rate, disp_samp_freq, link_rate, |
1337 | n_param, intelhaddata); | |
5dab11d8 JA |
1338 | |
1339 | /* Enable Audio */ | |
40ce4b5d | 1340 | had_enable_audio(intelhaddata, true); |
5dab11d8 JA |
1341 | |
1342 | out: | |
313d9f28 | 1343 | had_substream_put(intelhaddata); |
5dab11d8 JA |
1344 | return retval; |
1345 | } | |
1346 | ||
8f8d1d7f | 1347 | /* process hot plug, called from wq with mutex locked */ |
0e9c67d7 | 1348 | static void had_process_hot_plug(struct snd_intelhad *intelhaddata) |
372d855f | 1349 | { |
372d855f | 1350 | struct snd_pcm_substream *substream; |
372d855f | 1351 | |
bcce775c | 1352 | spin_lock_irq(&intelhaddata->had_spinlock); |
91b0cb0c | 1353 | if (intelhaddata->connected) { |
c75b0476 | 1354 | dev_dbg(intelhaddata->dev, "Device already connected\n"); |
bcce775c | 1355 | spin_unlock_irq(&intelhaddata->had_spinlock); |
0e9c67d7 | 1356 | return; |
372d855f | 1357 | } |
0e9c67d7 | 1358 | |
91b0cb0c | 1359 | intelhaddata->connected = true; |
c75b0476 TI |
1360 | dev_dbg(intelhaddata->dev, |
1361 | "%s @ %d:DEBUG PLUG/UNPLUG : HAD_DRV_CONNECTED\n", | |
372d855f | 1362 | __func__, __LINE__); |
bcce775c | 1363 | spin_unlock_irq(&intelhaddata->had_spinlock); |
372d855f | 1364 | |
2d42c033 TI |
1365 | had_build_channel_allocation_map(intelhaddata); |
1366 | ||
1367 | /* Report to above ALSA layer */ | |
313d9f28 | 1368 | substream = had_substream_get(intelhaddata); |
372d855f | 1369 | if (substream) { |
5def9019 | 1370 | snd_pcm_stop_xrun(substream); |
313d9f28 | 1371 | had_substream_put(intelhaddata); |
372d855f TI |
1372 | } |
1373 | ||
b9bacf27 | 1374 | snd_jack_report(intelhaddata->jack, SND_JACK_AVOUT); |
372d855f TI |
1375 | } |
1376 | ||
8f8d1d7f | 1377 | /* process hot unplug, called from wq with mutex locked */ |
0e9c67d7 | 1378 | static void had_process_hot_unplug(struct snd_intelhad *intelhaddata) |
372d855f | 1379 | { |
313d9f28 | 1380 | struct snd_pcm_substream *substream; |
372d855f | 1381 | |
bcce775c | 1382 | spin_lock_irq(&intelhaddata->had_spinlock); |
91b0cb0c | 1383 | if (!intelhaddata->connected) { |
c75b0476 | 1384 | dev_dbg(intelhaddata->dev, "Device already disconnected\n"); |
bcce775c | 1385 | spin_unlock_irq(&intelhaddata->had_spinlock); |
2d42c033 | 1386 | return; |
372d855f | 1387 | |
372d855f TI |
1388 | } |
1389 | ||
0e9c67d7 | 1390 | /* Disable Audio */ |
40ce4b5d | 1391 | had_enable_audio(intelhaddata, false); |
0e9c67d7 | 1392 | |
91b0cb0c | 1393 | intelhaddata->connected = false; |
c75b0476 TI |
1394 | dev_dbg(intelhaddata->dev, |
1395 | "%s @ %d:DEBUG PLUG/UNPLUG : HAD_DRV_DISCONNECTED\n", | |
372d855f | 1396 | __func__, __LINE__); |
313d9f28 | 1397 | spin_unlock_irq(&intelhaddata->had_spinlock); |
372d855f | 1398 | |
2d42c033 TI |
1399 | kfree(intelhaddata->chmap->chmap); |
1400 | intelhaddata->chmap->chmap = NULL; | |
1401 | ||
372d855f | 1402 | /* Report to above ALSA layer */ |
2d42c033 TI |
1403 | substream = had_substream_get(intelhaddata); |
1404 | if (substream) { | |
5def9019 | 1405 | snd_pcm_stop_xrun(substream); |
2d42c033 TI |
1406 | had_substream_put(intelhaddata); |
1407 | } | |
372d855f | 1408 | |
b9bacf27 | 1409 | snd_jack_report(intelhaddata->jack, 0); |
372d855f TI |
1410 | } |
1411 | ||
73997b05 TI |
1412 | /* |
1413 | * ALSA iec958 and ELD controls | |
1414 | */ | |
5dab11d8 | 1415 | |
5dab11d8 JA |
1416 | static int had_iec958_info(struct snd_kcontrol *kcontrol, |
1417 | struct snd_ctl_elem_info *uinfo) | |
1418 | { | |
1419 | uinfo->type = SNDRV_CTL_ELEM_TYPE_IEC958; | |
1420 | uinfo->count = 1; | |
1421 | return 0; | |
1422 | } | |
1423 | ||
1424 | static int had_iec958_get(struct snd_kcontrol *kcontrol, | |
1425 | struct snd_ctl_elem_value *ucontrol) | |
1426 | { | |
1427 | struct snd_intelhad *intelhaddata = snd_kcontrol_chip(kcontrol); | |
1428 | ||
8f8d1d7f | 1429 | mutex_lock(&intelhaddata->mutex); |
5dab11d8 JA |
1430 | ucontrol->value.iec958.status[0] = (intelhaddata->aes_bits >> 0) & 0xff; |
1431 | ucontrol->value.iec958.status[1] = (intelhaddata->aes_bits >> 8) & 0xff; | |
1432 | ucontrol->value.iec958.status[2] = | |
1433 | (intelhaddata->aes_bits >> 16) & 0xff; | |
1434 | ucontrol->value.iec958.status[3] = | |
1435 | (intelhaddata->aes_bits >> 24) & 0xff; | |
8f8d1d7f | 1436 | mutex_unlock(&intelhaddata->mutex); |
5dab11d8 JA |
1437 | return 0; |
1438 | } | |
372d855f | 1439 | |
5dab11d8 JA |
1440 | static int had_iec958_mask_get(struct snd_kcontrol *kcontrol, |
1441 | struct snd_ctl_elem_value *ucontrol) | |
1442 | { | |
1443 | ucontrol->value.iec958.status[0] = 0xff; | |
1444 | ucontrol->value.iec958.status[1] = 0xff; | |
1445 | ucontrol->value.iec958.status[2] = 0xff; | |
1446 | ucontrol->value.iec958.status[3] = 0xff; | |
1447 | return 0; | |
1448 | } | |
372d855f | 1449 | |
5dab11d8 JA |
1450 | static int had_iec958_put(struct snd_kcontrol *kcontrol, |
1451 | struct snd_ctl_elem_value *ucontrol) | |
1452 | { | |
1453 | unsigned int val; | |
1454 | struct snd_intelhad *intelhaddata = snd_kcontrol_chip(kcontrol); | |
8f8d1d7f | 1455 | int changed = 0; |
5dab11d8 | 1456 | |
5dab11d8 JA |
1457 | val = (ucontrol->value.iec958.status[0] << 0) | |
1458 | (ucontrol->value.iec958.status[1] << 8) | | |
1459 | (ucontrol->value.iec958.status[2] << 16) | | |
1460 | (ucontrol->value.iec958.status[3] << 24); | |
8f8d1d7f | 1461 | mutex_lock(&intelhaddata->mutex); |
5dab11d8 JA |
1462 | if (intelhaddata->aes_bits != val) { |
1463 | intelhaddata->aes_bits = val; | |
8f8d1d7f | 1464 | changed = 1; |
5dab11d8 | 1465 | } |
8f8d1d7f TI |
1466 | mutex_unlock(&intelhaddata->mutex); |
1467 | return changed; | |
5dab11d8 JA |
1468 | } |
1469 | ||
4aedb946 TI |
1470 | static int had_ctl_eld_info(struct snd_kcontrol *kcontrol, |
1471 | struct snd_ctl_elem_info *uinfo) | |
1472 | { | |
1473 | uinfo->type = SNDRV_CTL_ELEM_TYPE_BYTES; | |
1474 | uinfo->count = HDMI_MAX_ELD_BYTES; | |
1475 | return 0; | |
1476 | } | |
1477 | ||
1478 | static int had_ctl_eld_get(struct snd_kcontrol *kcontrol, | |
1479 | struct snd_ctl_elem_value *ucontrol) | |
1480 | { | |
1481 | struct snd_intelhad *intelhaddata = snd_kcontrol_chip(kcontrol); | |
1482 | ||
1483 | mutex_lock(&intelhaddata->mutex); | |
1484 | memcpy(ucontrol->value.bytes.data, intelhaddata->eld, | |
1485 | HDMI_MAX_ELD_BYTES); | |
1486 | mutex_unlock(&intelhaddata->mutex); | |
1487 | return 0; | |
1488 | } | |
5dab11d8 | 1489 | |
73997b05 | 1490 | static const struct snd_kcontrol_new had_controls[] = { |
4aedb946 TI |
1491 | { |
1492 | .access = SNDRV_CTL_ELEM_ACCESS_READ, | |
1493 | .iface = SNDRV_CTL_ELEM_IFACE_PCM, | |
1494 | .name = SNDRV_CTL_NAME_IEC958("", PLAYBACK, MASK), | |
1495 | .info = had_iec958_info, /* shared */ | |
1496 | .get = had_iec958_mask_get, | |
1497 | }, | |
1498 | { | |
1499 | .iface = SNDRV_CTL_ELEM_IFACE_PCM, | |
1500 | .name = SNDRV_CTL_NAME_IEC958("", PLAYBACK, DEFAULT), | |
1501 | .info = had_iec958_info, | |
1502 | .get = had_iec958_get, | |
1503 | .put = had_iec958_put, | |
1504 | }, | |
1505 | { | |
1506 | .access = (SNDRV_CTL_ELEM_ACCESS_READ | | |
1507 | SNDRV_CTL_ELEM_ACCESS_VOLATILE), | |
1508 | .iface = SNDRV_CTL_ELEM_IFACE_PCM, | |
1509 | .name = "ELD", | |
1510 | .info = had_ctl_eld_info, | |
1511 | .get = had_ctl_eld_get, | |
1512 | }, | |
5dab11d8 JA |
1513 | }; |
1514 | ||
73997b05 TI |
1515 | /* |
1516 | * audio interrupt handler | |
1517 | */ | |
da864809 TI |
1518 | static irqreturn_t display_pipe_interrupt_handler(int irq, void *dev_id) |
1519 | { | |
1520 | struct snd_intelhad *ctx = dev_id; | |
28ed125b | 1521 | u32 audio_stat; |
da864809 | 1522 | |
28ed125b TI |
1523 | /* use raw register access to ack IRQs even while disconnected */ |
1524 | audio_stat = had_read_register_raw(ctx, AUD_HDMI_STATUS); | |
da864809 TI |
1525 | |
1526 | if (audio_stat & HDMI_AUDIO_UNDERRUN) { | |
28ed125b TI |
1527 | had_write_register_raw(ctx, AUD_HDMI_STATUS, |
1528 | HDMI_AUDIO_UNDERRUN); | |
da864809 TI |
1529 | had_process_buffer_underrun(ctx); |
1530 | } | |
1531 | ||
1532 | if (audio_stat & HDMI_AUDIO_BUFFER_DONE) { | |
28ed125b TI |
1533 | had_write_register_raw(ctx, AUD_HDMI_STATUS, |
1534 | HDMI_AUDIO_BUFFER_DONE); | |
da864809 TI |
1535 | had_process_buffer_done(ctx); |
1536 | } | |
1537 | ||
1538 | return IRQ_HANDLED; | |
1539 | } | |
1540 | ||
73997b05 TI |
1541 | /* |
1542 | * monitor plug/unplug notification from i915; just kick off the work | |
1543 | */ | |
da864809 TI |
1544 | static void notify_audio_lpe(struct platform_device *pdev) |
1545 | { | |
1546 | struct snd_intelhad *ctx = platform_get_drvdata(pdev); | |
da864809 | 1547 | |
99b2ab9d TI |
1548 | schedule_work(&ctx->hdmi_audio_wq); |
1549 | } | |
da864809 | 1550 | |
73997b05 | 1551 | /* the work to handle monitor hot plug/unplug */ |
99b2ab9d TI |
1552 | static void had_audio_wq(struct work_struct *work) |
1553 | { | |
1554 | struct snd_intelhad *ctx = | |
1555 | container_of(work, struct snd_intelhad, hdmi_audio_wq); | |
1556 | struct intel_hdmi_lpe_audio_pdata *pdata = ctx->dev->platform_data; | |
da864809 | 1557 | |
182cdf23 | 1558 | pm_runtime_get_sync(ctx->dev); |
8f8d1d7f | 1559 | mutex_lock(&ctx->mutex); |
99b2ab9d TI |
1560 | if (!pdata->hdmi_connected) { |
1561 | dev_dbg(ctx->dev, "%s: Event: HAD_NOTIFY_HOT_UNPLUG\n", | |
1562 | __func__); | |
4aedb946 | 1563 | memset(ctx->eld, 0, sizeof(ctx->eld)); /* clear the old ELD */ |
0e9c67d7 | 1564 | had_process_hot_unplug(ctx); |
da864809 TI |
1565 | } else { |
1566 | struct intel_hdmi_lpe_audio_eld *eld = &pdata->eld; | |
1567 | ||
0e9c67d7 TI |
1568 | dev_dbg(ctx->dev, "%s: HAD_NOTIFY_ELD : port = %d, tmds = %d\n", |
1569 | __func__, eld->port_id, pdata->tmds_clock_speed); | |
1570 | ||
da864809 TI |
1571 | switch (eld->pipe_id) { |
1572 | case 0: | |
1573 | ctx->had_config_offset = AUDIO_HDMI_CONFIG_A; | |
1574 | break; | |
1575 | case 1: | |
1576 | ctx->had_config_offset = AUDIO_HDMI_CONFIG_B; | |
1577 | break; | |
1578 | case 2: | |
1579 | ctx->had_config_offset = AUDIO_HDMI_CONFIG_C; | |
1580 | break; | |
1581 | default: | |
99b2ab9d | 1582 | dev_dbg(ctx->dev, "Invalid pipe %d\n", |
da864809 TI |
1583 | eld->pipe_id); |
1584 | break; | |
1585 | } | |
1586 | ||
df0435db | 1587 | memcpy(ctx->eld, eld->eld_data, sizeof(ctx->eld)); |
da864809 | 1588 | |
0e9c67d7 TI |
1589 | ctx->dp_output = pdata->dp_output; |
1590 | ctx->tmds_clock_speed = pdata->tmds_clock_speed; | |
1591 | ctx->link_rate = pdata->link_rate; | |
da864809 | 1592 | |
0e9c67d7 | 1593 | had_process_hot_plug(ctx); |
da864809 | 1594 | |
0e9c67d7 | 1595 | /* Process mode change if stream is active */ |
b556290f | 1596 | had_process_mode_change(ctx); |
da864809 | 1597 | } |
8f8d1d7f | 1598 | mutex_unlock(&ctx->mutex); |
182cdf23 TI |
1599 | pm_runtime_put(ctx->dev); |
1600 | } | |
1601 | ||
b9bacf27 TI |
1602 | /* |
1603 | * Jack interface | |
1604 | */ | |
1605 | static int had_create_jack(struct snd_intelhad *ctx) | |
1606 | { | |
1607 | int err; | |
1608 | ||
1609 | err = snd_jack_new(ctx->card, "HDMI/DP", SND_JACK_AVOUT, &ctx->jack, | |
1610 | true, false); | |
1611 | if (err < 0) | |
1612 | return err; | |
1613 | ctx->jack->private_data = ctx; | |
1614 | return 0; | |
1615 | } | |
1616 | ||
182cdf23 TI |
1617 | /* |
1618 | * PM callbacks | |
1619 | */ | |
1620 | ||
1621 | static int hdmi_lpe_audio_runtime_suspend(struct device *dev) | |
1622 | { | |
1623 | struct snd_intelhad *ctx = dev_get_drvdata(dev); | |
1624 | struct snd_pcm_substream *substream; | |
1625 | ||
1626 | substream = had_substream_get(ctx); | |
1627 | if (substream) { | |
1628 | snd_pcm_suspend(substream); | |
1629 | had_substream_put(ctx); | |
1630 | } | |
1631 | ||
1632 | return 0; | |
1633 | } | |
1634 | ||
1df98924 | 1635 | static int __maybe_unused hdmi_lpe_audio_suspend(struct device *dev) |
182cdf23 TI |
1636 | { |
1637 | struct snd_intelhad *ctx = dev_get_drvdata(dev); | |
1638 | int err; | |
1639 | ||
1640 | err = hdmi_lpe_audio_runtime_suspend(dev); | |
1641 | if (!err) | |
1642 | snd_power_change_state(ctx->card, SNDRV_CTL_POWER_D3hot); | |
1643 | return err; | |
1644 | } | |
1645 | ||
1df98924 | 1646 | static int __maybe_unused hdmi_lpe_audio_resume(struct device *dev) |
182cdf23 TI |
1647 | { |
1648 | struct snd_intelhad *ctx = dev_get_drvdata(dev); | |
1649 | ||
1650 | snd_power_change_state(ctx->card, SNDRV_CTL_POWER_D0); | |
1651 | return 0; | |
da864809 TI |
1652 | } |
1653 | ||
1654 | /* release resources */ | |
1655 | static void hdmi_lpe_audio_free(struct snd_card *card) | |
1656 | { | |
1657 | struct snd_intelhad *ctx = card->private_data; | |
1658 | ||
99b2ab9d TI |
1659 | cancel_work_sync(&ctx->hdmi_audio_wq); |
1660 | ||
da864809 TI |
1661 | if (ctx->mmio_start) |
1662 | iounmap(ctx->mmio_start); | |
1663 | if (ctx->irq >= 0) | |
1664 | free_irq(ctx->irq, ctx); | |
1665 | } | |
1666 | ||
79dda75a | 1667 | /* |
da864809 | 1668 | * hdmi_lpe_audio_probe - start bridge with i915 |
5dab11d8 | 1669 | * |
da864809 | 1670 | * This function is called when the i915 driver creates the |
2e52f5e5 | 1671 | * hdmi-lpe-audio platform device. |
5dab11d8 | 1672 | */ |
da864809 | 1673 | static int hdmi_lpe_audio_probe(struct platform_device *pdev) |
5dab11d8 | 1674 | { |
5dab11d8 | 1675 | struct snd_card *card; |
da864809 TI |
1676 | struct snd_intelhad *ctx; |
1677 | struct snd_pcm *pcm; | |
1678 | struct intel_hdmi_lpe_audio_pdata *pdata; | |
1679 | int irq; | |
1680 | struct resource *res_mmio; | |
4aedb946 | 1681 | int i, ret; |
da864809 | 1682 | |
da864809 TI |
1683 | pdata = pdev->dev.platform_data; |
1684 | if (!pdata) { | |
1685 | dev_err(&pdev->dev, "%s: quit: pdata not allocated by i915!!\n", __func__); | |
1686 | return -EINVAL; | |
1687 | } | |
5dab11d8 | 1688 | |
da864809 TI |
1689 | /* get resources */ |
1690 | irq = platform_get_irq(pdev, 0); | |
1691 | if (irq < 0) { | |
1692 | dev_err(&pdev->dev, "Could not get irq resource\n"); | |
1693 | return -ENODEV; | |
1694 | } | |
1695 | ||
1696 | res_mmio = platform_get_resource(pdev, IORESOURCE_MEM, 0); | |
1697 | if (!res_mmio) { | |
1698 | dev_err(&pdev->dev, "Could not get IO_MEM resources\n"); | |
1699 | return -ENXIO; | |
1700 | } | |
5dab11d8 | 1701 | |
5647aec2 | 1702 | /* create a card instance with ALSA framework */ |
da864809 TI |
1703 | ret = snd_card_new(&pdev->dev, hdmi_card_index, hdmi_card_id, |
1704 | THIS_MODULE, sizeof(*ctx), &card); | |
1705 | if (ret) | |
1706 | return ret; | |
1707 | ||
1708 | ctx = card->private_data; | |
1709 | spin_lock_init(&ctx->had_spinlock); | |
8f8d1d7f | 1710 | mutex_init(&ctx->mutex); |
91b0cb0c | 1711 | ctx->connected = false; |
da864809 TI |
1712 | ctx->dev = &pdev->dev; |
1713 | ctx->card = card; | |
da864809 TI |
1714 | ctx->aes_bits = SNDRV_PCM_DEFAULT_CON_SPDIF; |
1715 | strcpy(card->driver, INTEL_HAD); | |
873ab035 TI |
1716 | strcpy(card->shortname, "Intel HDMI/DP LPE Audio"); |
1717 | strcpy(card->longname, "Intel HDMI/DP LPE Audio"); | |
da864809 TI |
1718 | |
1719 | ctx->irq = -1; | |
1720 | ctx->tmds_clock_speed = DIS_SAMPLE_RATE_148_5; | |
99b2ab9d | 1721 | INIT_WORK(&ctx->hdmi_audio_wq, had_audio_wq); |
da864809 TI |
1722 | |
1723 | card->private_free = hdmi_lpe_audio_free; | |
1724 | ||
1725 | /* assume pipe A as default */ | |
1726 | ctx->had_config_offset = AUDIO_HDMI_CONFIG_A; | |
1727 | ||
1728 | platform_set_drvdata(pdev, ctx); | |
1729 | ||
1730 | dev_dbg(&pdev->dev, "%s: mmio_start = 0x%x, mmio_end = 0x%x\n", | |
1731 | __func__, (unsigned int)res_mmio->start, | |
1732 | (unsigned int)res_mmio->end); | |
1733 | ||
1734 | ctx->mmio_start = ioremap_nocache(res_mmio->start, | |
1735 | (size_t)(resource_size(res_mmio))); | |
1736 | if (!ctx->mmio_start) { | |
1737 | dev_err(&pdev->dev, "Could not get ioremap\n"); | |
1738 | ret = -EACCES; | |
1739 | goto err; | |
1740 | } | |
5dab11d8 | 1741 | |
da864809 TI |
1742 | /* setup interrupt handler */ |
1743 | ret = request_irq(irq, display_pipe_interrupt_handler, 0, | |
1744 | pdev->name, ctx); | |
1745 | if (ret < 0) { | |
1746 | dev_err(&pdev->dev, "request_irq failed\n"); | |
1747 | goto err; | |
1748 | } | |
5dab11d8 | 1749 | |
da864809 TI |
1750 | ctx->irq = irq; |
1751 | ||
1752 | ret = snd_pcm_new(card, INTEL_HAD, PCM_INDEX, MAX_PB_STREAMS, | |
1753 | MAX_CAP_STREAMS, &pcm); | |
1754 | if (ret) | |
5dab11d8 JA |
1755 | goto err; |
1756 | ||
1757 | /* setup private data which can be retrieved when required */ | |
da864809 | 1758 | pcm->private_data = ctx; |
5dab11d8 JA |
1759 | pcm->info_flags = 0; |
1760 | strncpy(pcm->name, card->shortname, strlen(card->shortname)); | |
da864809 | 1761 | /* setup the ops for playabck */ |
b556290f | 1762 | snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &had_pcm_ops); |
412bbe7d TI |
1763 | |
1764 | /* only 32bit addressable */ | |
1765 | dma_set_mask(&pdev->dev, DMA_BIT_MASK(32)); | |
1766 | dma_set_coherent_mask(&pdev->dev, DMA_BIT_MASK(32)); | |
1767 | ||
e1b239f3 TI |
1768 | /* allocate dma pages; |
1769 | * try to allocate 600k buffer as default which is large enough | |
5dab11d8 | 1770 | */ |
da864809 | 1771 | snd_pcm_lib_preallocate_pages_for_all(pcm, |
5dab11d8 | 1772 | SNDRV_DMA_TYPE_DEV, NULL, |
e1b239f3 | 1773 | HAD_DEFAULT_BUFFER, HAD_MAX_BUFFER); |
5dab11d8 | 1774 | |
4aedb946 TI |
1775 | /* create controls */ |
1776 | for (i = 0; i < ARRAY_SIZE(had_controls); i++) { | |
1777 | ret = snd_ctl_add(card, snd_ctl_new1(&had_controls[i], ctx)); | |
1778 | if (ret < 0) | |
1779 | goto err; | |
1780 | } | |
5dab11d8 JA |
1781 | |
1782 | init_channel_allocations(); | |
1783 | ||
1784 | /* Register channel map controls */ | |
da864809 TI |
1785 | ret = had_register_chmap_ctls(ctx, pcm); |
1786 | if (ret < 0) | |
5dab11d8 JA |
1787 | goto err; |
1788 | ||
b9bacf27 TI |
1789 | ret = had_create_jack(ctx); |
1790 | if (ret < 0) | |
1791 | goto err; | |
1792 | ||
da864809 TI |
1793 | ret = snd_card_register(card); |
1794 | if (ret) | |
36ec0d99 TI |
1795 | goto err; |
1796 | ||
bcce775c | 1797 | spin_lock_irq(&pdata->lpe_audio_slock); |
da864809 | 1798 | pdata->notify_audio_lpe = notify_audio_lpe; |
99b2ab9d | 1799 | pdata->notify_pending = false; |
bcce775c | 1800 | spin_unlock_irq(&pdata->lpe_audio_slock); |
da864809 TI |
1801 | |
1802 | pm_runtime_set_active(&pdev->dev); | |
1803 | pm_runtime_enable(&pdev->dev); | |
1804 | ||
99b2ab9d | 1805 | dev_dbg(&pdev->dev, "%s: handle pending notification\n", __func__); |
da864809 | 1806 | schedule_work(&ctx->hdmi_audio_wq); |
5dab11d8 | 1807 | |
79dda75a | 1808 | return 0; |
5647aec2 | 1809 | |
5dab11d8 JA |
1810 | err: |
1811 | snd_card_free(card); | |
da864809 | 1812 | return ret; |
5dab11d8 JA |
1813 | } |
1814 | ||
79dda75a | 1815 | /* |
da864809 | 1816 | * hdmi_lpe_audio_remove - stop bridge with i915 |
5dab11d8 | 1817 | * |
2e52f5e5 | 1818 | * This function is called when the platform device is destroyed. |
5dab11d8 | 1819 | */ |
da864809 | 1820 | static int hdmi_lpe_audio_remove(struct platform_device *pdev) |
5dab11d8 | 1821 | { |
da864809 | 1822 | struct snd_intelhad *ctx = platform_get_drvdata(pdev); |
5dab11d8 | 1823 | |
da864809 | 1824 | snd_card_free(ctx->card); |
5dab11d8 JA |
1825 | return 0; |
1826 | } | |
1827 | ||
182cdf23 TI |
1828 | static const struct dev_pm_ops hdmi_lpe_audio_pm = { |
1829 | SET_SYSTEM_SLEEP_PM_OPS(hdmi_lpe_audio_suspend, hdmi_lpe_audio_resume) | |
1830 | SET_RUNTIME_PM_OPS(hdmi_lpe_audio_runtime_suspend, NULL, NULL) | |
1831 | }; | |
1832 | ||
da864809 TI |
1833 | static struct platform_driver hdmi_lpe_audio_driver = { |
1834 | .driver = { | |
1835 | .name = "hdmi-lpe-audio", | |
182cdf23 | 1836 | .pm = &hdmi_lpe_audio_pm, |
da864809 TI |
1837 | }, |
1838 | .probe = hdmi_lpe_audio_probe, | |
1839 | .remove = hdmi_lpe_audio_remove, | |
da864809 TI |
1840 | }; |
1841 | ||
1842 | module_platform_driver(hdmi_lpe_audio_driver); | |
1843 | MODULE_ALIAS("platform:hdmi_lpe_audio"); | |
1844 | ||
5dab11d8 JA |
1845 | MODULE_AUTHOR("Sailaja Bandarupalli <sailaja.bandarupalli@intel.com>"); |
1846 | MODULE_AUTHOR("Ramesh Babu K V <ramesh.babu@intel.com>"); | |
1847 | MODULE_AUTHOR("Vaibhav Agarwal <vaibhav.agarwal@intel.com>"); | |
1848 | MODULE_AUTHOR("Jerome Anand <jerome.anand@intel.com>"); | |
1849 | MODULE_DESCRIPTION("Intel HDMI Audio driver"); | |
1850 | MODULE_LICENSE("GPL v2"); | |
1851 | MODULE_SUPPORTED_DEVICE("{Intel,Intel_HAD}"); |