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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 | ||
5dab11d8 JA |
24 | #include <linux/platform_device.h> |
25 | #include <linux/io.h> | |
26 | #include <linux/slab.h> | |
27 | #include <linux/module.h> | |
da864809 | 28 | #include <linux/interrupt.h> |
5dab11d8 JA |
29 | #include <linux/acpi.h> |
30 | #include <asm/cacheflush.h> | |
31 | #include <sound/pcm.h> | |
32 | #include <sound/core.h> | |
33 | #include <sound/pcm_params.h> | |
34 | #include <sound/initval.h> | |
35 | #include <sound/control.h> | |
36 | #include <sound/initval.h> | |
da864809 | 37 | #include <drm/intel_lpe_audio.h> |
5dab11d8 JA |
38 | #include "intel_hdmi_audio.h" |
39 | ||
5dab11d8 JA |
40 | /*standard module options for ALSA. This module supports only one card*/ |
41 | static int hdmi_card_index = SNDRV_DEFAULT_IDX1; | |
42 | static char *hdmi_card_id = SNDRV_DEFAULT_STR1; | |
5dab11d8 JA |
43 | |
44 | module_param_named(index, hdmi_card_index, int, 0444); | |
45 | MODULE_PARM_DESC(index, | |
46 | "Index value for INTEL Intel HDMI Audio controller."); | |
47 | module_param_named(id, hdmi_card_id, charp, 0444); | |
48 | MODULE_PARM_DESC(id, | |
49 | "ID string for INTEL Intel HDMI Audio controller."); | |
50 | ||
51 | /* | |
52 | * ELD SA bits in the CEA Speaker Allocation data block | |
53 | */ | |
54 | static int eld_speaker_allocation_bits[] = { | |
55 | [0] = FL | FR, | |
56 | [1] = LFE, | |
57 | [2] = FC, | |
58 | [3] = RL | RR, | |
59 | [4] = RC, | |
60 | [5] = FLC | FRC, | |
61 | [6] = RLC | RRC, | |
62 | /* the following are not defined in ELD yet */ | |
63 | [7] = 0, | |
64 | }; | |
65 | ||
66 | /* | |
67 | * This is an ordered list! | |
68 | * | |
69 | * The preceding ones have better chances to be selected by | |
70 | * hdmi_channel_allocation(). | |
71 | */ | |
72 | static struct cea_channel_speaker_allocation channel_allocations[] = { | |
73 | /* channel: 7 6 5 4 3 2 1 0 */ | |
74 | { .ca_index = 0x00, .speakers = { 0, 0, 0, 0, 0, 0, FR, FL } }, | |
75 | /* 2.1 */ | |
76 | { .ca_index = 0x01, .speakers = { 0, 0, 0, 0, 0, LFE, FR, FL } }, | |
77 | /* Dolby Surround */ | |
78 | { .ca_index = 0x02, .speakers = { 0, 0, 0, 0, FC, 0, FR, FL } }, | |
79 | /* surround40 */ | |
80 | { .ca_index = 0x08, .speakers = { 0, 0, RR, RL, 0, 0, FR, FL } }, | |
81 | /* surround41 */ | |
82 | { .ca_index = 0x09, .speakers = { 0, 0, RR, RL, 0, LFE, FR, FL } }, | |
83 | /* surround50 */ | |
84 | { .ca_index = 0x0a, .speakers = { 0, 0, RR, RL, FC, 0, FR, FL } }, | |
85 | /* surround51 */ | |
86 | { .ca_index = 0x0b, .speakers = { 0, 0, RR, RL, FC, LFE, FR, FL } }, | |
87 | /* 6.1 */ | |
88 | { .ca_index = 0x0f, .speakers = { 0, RC, RR, RL, FC, LFE, FR, FL } }, | |
89 | /* surround71 */ | |
90 | { .ca_index = 0x13, .speakers = { RRC, RLC, RR, RL, FC, LFE, FR, FL } }, | |
91 | ||
92 | { .ca_index = 0x03, .speakers = { 0, 0, 0, 0, FC, LFE, FR, FL } }, | |
93 | { .ca_index = 0x04, .speakers = { 0, 0, 0, RC, 0, 0, FR, FL } }, | |
94 | { .ca_index = 0x05, .speakers = { 0, 0, 0, RC, 0, LFE, FR, FL } }, | |
95 | { .ca_index = 0x06, .speakers = { 0, 0, 0, RC, FC, 0, FR, FL } }, | |
96 | { .ca_index = 0x07, .speakers = { 0, 0, 0, RC, FC, LFE, FR, FL } }, | |
97 | { .ca_index = 0x0c, .speakers = { 0, RC, RR, RL, 0, 0, FR, FL } }, | |
98 | { .ca_index = 0x0d, .speakers = { 0, RC, RR, RL, 0, LFE, FR, FL } }, | |
99 | { .ca_index = 0x0e, .speakers = { 0, RC, RR, RL, FC, 0, FR, FL } }, | |
100 | { .ca_index = 0x10, .speakers = { RRC, RLC, RR, RL, 0, 0, FR, FL } }, | |
101 | { .ca_index = 0x11, .speakers = { RRC, RLC, RR, RL, 0, LFE, FR, FL } }, | |
102 | { .ca_index = 0x12, .speakers = { RRC, RLC, RR, RL, FC, 0, FR, FL } }, | |
103 | { .ca_index = 0x14, .speakers = { FRC, FLC, 0, 0, 0, 0, FR, FL } }, | |
104 | { .ca_index = 0x15, .speakers = { FRC, FLC, 0, 0, 0, LFE, FR, FL } }, | |
105 | { .ca_index = 0x16, .speakers = { FRC, FLC, 0, 0, FC, 0, FR, FL } }, | |
106 | { .ca_index = 0x17, .speakers = { FRC, FLC, 0, 0, FC, LFE, FR, FL } }, | |
107 | { .ca_index = 0x18, .speakers = { FRC, FLC, 0, RC, 0, 0, FR, FL } }, | |
108 | { .ca_index = 0x19, .speakers = { FRC, FLC, 0, RC, 0, LFE, FR, FL } }, | |
109 | { .ca_index = 0x1a, .speakers = { FRC, FLC, 0, RC, FC, 0, FR, FL } }, | |
110 | { .ca_index = 0x1b, .speakers = { FRC, FLC, 0, RC, FC, LFE, FR, FL } }, | |
111 | { .ca_index = 0x1c, .speakers = { FRC, FLC, RR, RL, 0, 0, FR, FL } }, | |
112 | { .ca_index = 0x1d, .speakers = { FRC, FLC, RR, RL, 0, LFE, FR, FL } }, | |
113 | { .ca_index = 0x1e, .speakers = { FRC, FLC, RR, RL, FC, 0, FR, FL } }, | |
114 | { .ca_index = 0x1f, .speakers = { FRC, FLC, RR, RL, FC, LFE, FR, FL } }, | |
115 | }; | |
116 | ||
117 | static struct channel_map_table map_tables[] = { | |
118 | { SNDRV_CHMAP_FL, 0x00, FL }, | |
119 | { SNDRV_CHMAP_FR, 0x01, FR }, | |
120 | { SNDRV_CHMAP_RL, 0x04, RL }, | |
121 | { SNDRV_CHMAP_RR, 0x05, RR }, | |
122 | { SNDRV_CHMAP_LFE, 0x02, LFE }, | |
123 | { SNDRV_CHMAP_FC, 0x03, FC }, | |
124 | { SNDRV_CHMAP_RLC, 0x06, RLC }, | |
125 | { SNDRV_CHMAP_RRC, 0x07, RRC }, | |
126 | {} /* terminator */ | |
127 | }; | |
128 | ||
129 | /* hardware capability structure */ | |
130 | static const struct snd_pcm_hardware snd_intel_hadstream = { | |
131 | .info = (SNDRV_PCM_INFO_INTERLEAVED | | |
132 | SNDRV_PCM_INFO_DOUBLE | | |
133 | SNDRV_PCM_INFO_MMAP| | |
134 | SNDRV_PCM_INFO_MMAP_VALID | | |
135 | SNDRV_PCM_INFO_BATCH), | |
136 | .formats = (SNDRV_PCM_FMTBIT_S24 | | |
137 | SNDRV_PCM_FMTBIT_U24), | |
138 | .rates = SNDRV_PCM_RATE_32000 | | |
139 | SNDRV_PCM_RATE_44100 | | |
140 | SNDRV_PCM_RATE_48000 | | |
141 | SNDRV_PCM_RATE_88200 | | |
142 | SNDRV_PCM_RATE_96000 | | |
143 | SNDRV_PCM_RATE_176400 | | |
144 | SNDRV_PCM_RATE_192000, | |
145 | .rate_min = HAD_MIN_RATE, | |
146 | .rate_max = HAD_MAX_RATE, | |
147 | .channels_min = HAD_MIN_CHANNEL, | |
148 | .channels_max = HAD_MAX_CHANNEL, | |
149 | .buffer_bytes_max = HAD_MAX_BUFFER, | |
150 | .period_bytes_min = HAD_MIN_PERIOD_BYTES, | |
151 | .period_bytes_max = HAD_MAX_PERIOD_BYTES, | |
152 | .periods_min = HAD_MIN_PERIODS, | |
153 | .periods_max = HAD_MAX_PERIODS, | |
154 | .fifo_size = HAD_FIFO_SIZE, | |
155 | }; | |
156 | ||
157 | /* Register access functions */ | |
372d855f | 158 | static int had_get_hwstate(struct snd_intelhad *intelhaddata) |
5dab11d8 JA |
159 | { |
160 | /* Check for device presence -SW state */ | |
c75b0476 | 161 | if (intelhaddata->drv_status == HAD_DRV_DISCONNECTED) |
5dab11d8 | 162 | return -ENODEV; |
5dab11d8 JA |
163 | |
164 | return 0; | |
165 | } | |
166 | ||
da864809 TI |
167 | static inline void |
168 | mid_hdmi_audio_read(struct snd_intelhad *ctx, u32 reg, u32 *val) | |
5dab11d8 | 169 | { |
da864809 | 170 | *val = ioread32(ctx->mmio_start + ctx->had_config_offset + reg); |
5dab11d8 JA |
171 | } |
172 | ||
da864809 TI |
173 | static inline void |
174 | mid_hdmi_audio_write(struct snd_intelhad *ctx, u32 reg, u32 val) | |
5dab11d8 | 175 | { |
da864809 | 176 | iowrite32(val, ctx->mmio_start + ctx->had_config_offset + reg); |
5dab11d8 JA |
177 | } |
178 | ||
372d855f TI |
179 | static int had_read_register(struct snd_intelhad *intelhaddata, |
180 | u32 offset, u32 *data) | |
5dab11d8 JA |
181 | { |
182 | int retval; | |
5dab11d8 JA |
183 | |
184 | retval = had_get_hwstate(intelhaddata); | |
da864809 TI |
185 | if (retval) |
186 | return retval; | |
5dab11d8 | 187 | |
da864809 TI |
188 | mid_hdmi_audio_read(intelhaddata, offset, data); |
189 | return 0; | |
190 | } | |
191 | ||
192 | static void fixup_dp_config(struct snd_intelhad *intelhaddata, | |
193 | u32 offset, u32 *data) | |
194 | { | |
195 | if (intelhaddata->dp_output) { | |
196 | if (offset == AUD_CONFIG && (*data & AUD_CONFIG_VALID_BIT)) | |
197 | *data |= AUD_CONFIG_DP_MODE | AUD_CONFIG_BLOCK_BIT; | |
198 | } | |
5dab11d8 JA |
199 | } |
200 | ||
372d855f TI |
201 | static int had_write_register(struct snd_intelhad *intelhaddata, |
202 | u32 offset, u32 data) | |
5dab11d8 JA |
203 | { |
204 | int retval; | |
5dab11d8 JA |
205 | |
206 | retval = had_get_hwstate(intelhaddata); | |
da864809 TI |
207 | if (retval) |
208 | return retval; | |
5dab11d8 | 209 | |
da864809 TI |
210 | fixup_dp_config(intelhaddata, offset, &data); |
211 | mid_hdmi_audio_write(intelhaddata, offset, data); | |
212 | return 0; | |
5dab11d8 JA |
213 | } |
214 | ||
372d855f TI |
215 | static int had_read_modify(struct snd_intelhad *intelhaddata, u32 offset, |
216 | u32 data, u32 mask) | |
5dab11d8 | 217 | { |
da864809 | 218 | u32 val_tmp; |
5dab11d8 | 219 | int retval; |
5dab11d8 JA |
220 | |
221 | retval = had_get_hwstate(intelhaddata); | |
da864809 TI |
222 | if (retval) |
223 | return retval; | |
5dab11d8 | 224 | |
da864809 TI |
225 | mid_hdmi_audio_read(intelhaddata, offset, &val_tmp); |
226 | val_tmp &= ~mask; | |
227 | val_tmp |= (data & mask); | |
228 | ||
229 | fixup_dp_config(intelhaddata, offset, &val_tmp); | |
230 | mid_hdmi_audio_write(intelhaddata, offset, val_tmp); | |
231 | return 0; | |
5dab11d8 | 232 | } |
da864809 TI |
233 | |
234 | /* | |
235 | * function to read-modify AUD_CONFIG register on VLV2. | |
236 | * The had_read_modify() function should not directly be used on VLV2 for | |
237 | * updating AUD_CONFIG register. | |
5dab11d8 JA |
238 | * This is because: |
239 | * Bit6 of AUD_CONFIG register is writeonly due to a silicon bug on VLV2 | |
240 | * HDMI IP. As a result a read-modify of AUD_CONFIG regiter will always | |
241 | * clear bit6. AUD_CONFIG[6:4] represents the "channels" field of the | |
242 | * register. This field should be 1xy binary for configuration with 6 or | |
243 | * more channels. Read-modify of AUD_CONFIG (Eg. for enabling audio) | |
244 | * causes the "channels" field to be updated as 0xy binary resulting in | |
245 | * bad audio. The fix is to always write the AUD_CONFIG[6:4] with | |
246 | * appropriate value when doing read-modify of AUD_CONFIG register. | |
247 | * | |
248 | * @substream: the current substream or NULL if no active substream | |
249 | * @data : data to be written | |
250 | * @mask : mask | |
251 | * | |
252 | */ | |
da864809 | 253 | static int had_read_modify_aud_config_v2(struct snd_intelhad *intelhaddata, |
5dab11d8 JA |
254 | u32 data, u32 mask) |
255 | { | |
da864809 | 256 | struct snd_pcm_substream *substream; |
5dab11d8 JA |
257 | union aud_cfg cfg_val = {.cfg_regval = 0}; |
258 | u8 channels; | |
259 | ||
260 | /* | |
261 | * If substream is NULL, there is no active stream. | |
262 | * In this case just set channels to 2 | |
263 | */ | |
da864809 TI |
264 | substream = intelhaddata->stream_info.had_substream; |
265 | if (substream && substream->runtime) | |
5dab11d8 JA |
266 | channels = substream->runtime->channels; |
267 | else | |
268 | channels = 2; | |
269 | cfg_val.cfg_regx_v2.num_ch = channels - 2; | |
270 | ||
271 | data = data | cfg_val.cfg_regval; | |
272 | mask = mask | AUD_CONFIG_CH_MASK_V2; | |
273 | ||
c75b0476 TI |
274 | dev_dbg(intelhaddata->dev, "%s : data = %x, mask =%x\n", |
275 | __func__, data, mask); | |
5dab11d8 | 276 | |
79dda75a | 277 | return had_read_modify(intelhaddata, AUD_CONFIG, data, mask); |
5dab11d8 JA |
278 | } |
279 | ||
372d855f | 280 | static void snd_intelhad_enable_audio_int(struct snd_intelhad *ctx, bool enable) |
da864809 TI |
281 | { |
282 | u32 status_reg; | |
283 | ||
284 | if (enable) { | |
285 | mid_hdmi_audio_read(ctx, AUD_HDMI_STATUS_v2, &status_reg); | |
286 | status_reg |= HDMI_AUDIO_BUFFER_DONE | HDMI_AUDIO_UNDERRUN; | |
287 | mid_hdmi_audio_write(ctx, AUD_HDMI_STATUS_v2, status_reg); | |
288 | mid_hdmi_audio_read(ctx, AUD_HDMI_STATUS_v2, &status_reg); | |
289 | } | |
290 | } | |
291 | ||
372d855f TI |
292 | static void snd_intelhad_enable_audio(struct snd_intelhad *intelhaddata, |
293 | bool enable) | |
5dab11d8 | 294 | { |
da864809 TI |
295 | had_read_modify_aud_config_v2(intelhaddata, enable ? BIT(0) : 0, |
296 | BIT(0)); | |
5dab11d8 JA |
297 | } |
298 | ||
79dda75a TI |
299 | static void snd_intelhad_reset_audio(struct snd_intelhad *intelhaddata, |
300 | u8 reset) | |
5dab11d8 | 301 | { |
79dda75a | 302 | had_write_register(intelhaddata, AUD_HDMI_STATUS_v2, reset); |
5dab11d8 JA |
303 | } |
304 | ||
305 | /** | |
306 | * initialize audio channel status registers | |
307 | * This function is called in the prepare callback | |
308 | */ | |
309 | static int had_prog_status_reg(struct snd_pcm_substream *substream, | |
310 | struct snd_intelhad *intelhaddata) | |
311 | { | |
312 | union aud_cfg cfg_val = {.cfg_regval = 0}; | |
313 | union aud_ch_status_0 ch_stat0 = {.status_0_regval = 0}; | |
314 | union aud_ch_status_1 ch_stat1 = {.status_1_regval = 0}; | |
315 | int format; | |
316 | ||
5dab11d8 JA |
317 | ch_stat0.status_0_regx.lpcm_id = (intelhaddata->aes_bits & |
318 | IEC958_AES0_NONAUDIO)>>1; | |
319 | ch_stat0.status_0_regx.clk_acc = (intelhaddata->aes_bits & | |
320 | IEC958_AES3_CON_CLOCK)>>4; | |
4812dcc4 | 321 | cfg_val.cfg_regx_v2.val_bit = ch_stat0.status_0_regx.lpcm_id; |
5dab11d8 JA |
322 | |
323 | switch (substream->runtime->rate) { | |
324 | case AUD_SAMPLE_RATE_32: | |
325 | ch_stat0.status_0_regx.samp_freq = CH_STATUS_MAP_32KHZ; | |
326 | break; | |
327 | ||
328 | case AUD_SAMPLE_RATE_44_1: | |
329 | ch_stat0.status_0_regx.samp_freq = CH_STATUS_MAP_44KHZ; | |
330 | break; | |
331 | case AUD_SAMPLE_RATE_48: | |
332 | ch_stat0.status_0_regx.samp_freq = CH_STATUS_MAP_48KHZ; | |
333 | break; | |
334 | case AUD_SAMPLE_RATE_88_2: | |
335 | ch_stat0.status_0_regx.samp_freq = CH_STATUS_MAP_88KHZ; | |
336 | break; | |
337 | case AUD_SAMPLE_RATE_96: | |
338 | ch_stat0.status_0_regx.samp_freq = CH_STATUS_MAP_96KHZ; | |
339 | break; | |
340 | case AUD_SAMPLE_RATE_176_4: | |
341 | ch_stat0.status_0_regx.samp_freq = CH_STATUS_MAP_176KHZ; | |
342 | break; | |
343 | case AUD_SAMPLE_RATE_192: | |
344 | ch_stat0.status_0_regx.samp_freq = CH_STATUS_MAP_192KHZ; | |
345 | break; | |
346 | ||
347 | default: | |
348 | /* control should never come here */ | |
349 | return -EINVAL; | |
350 | break; | |
351 | ||
352 | } | |
79dda75a TI |
353 | had_write_register(intelhaddata, |
354 | AUD_CH_STATUS_0, ch_stat0.status_0_regval); | |
5dab11d8 JA |
355 | |
356 | format = substream->runtime->format; | |
357 | ||
358 | if (format == SNDRV_PCM_FORMAT_S16_LE) { | |
359 | ch_stat1.status_1_regx.max_wrd_len = MAX_SMPL_WIDTH_20; | |
360 | ch_stat1.status_1_regx.wrd_len = SMPL_WIDTH_16BITS; | |
361 | } else if (format == SNDRV_PCM_FORMAT_S24_LE) { | |
362 | ch_stat1.status_1_regx.max_wrd_len = MAX_SMPL_WIDTH_24; | |
363 | ch_stat1.status_1_regx.wrd_len = SMPL_WIDTH_24BITS; | |
364 | } else { | |
365 | ch_stat1.status_1_regx.max_wrd_len = 0; | |
366 | ch_stat1.status_1_regx.wrd_len = 0; | |
367 | } | |
79dda75a TI |
368 | had_write_register(intelhaddata, |
369 | AUD_CH_STATUS_1, ch_stat1.status_1_regval); | |
5dab11d8 JA |
370 | return 0; |
371 | } | |
372 | ||
76296ef0 | 373 | /* |
5dab11d8 JA |
374 | * function to initialize audio |
375 | * registers and buffer confgiuration registers | |
376 | * This function is called in the prepare callback | |
377 | */ | |
76296ef0 TI |
378 | static int snd_intelhad_audio_ctrl(struct snd_pcm_substream *substream, |
379 | struct snd_intelhad *intelhaddata) | |
5dab11d8 JA |
380 | { |
381 | union aud_cfg cfg_val = {.cfg_regval = 0}; | |
382 | union aud_buf_config buf_cfg = {.buf_cfgval = 0}; | |
383 | u8 channels; | |
384 | ||
385 | had_prog_status_reg(substream, intelhaddata); | |
386 | ||
387 | buf_cfg.buf_cfg_regx_v2.audio_fifo_watermark = FIFO_THRESHOLD; | |
388 | buf_cfg.buf_cfg_regx_v2.dma_fifo_watermark = DMA_FIFO_THRESHOLD; | |
389 | buf_cfg.buf_cfg_regx_v2.aud_delay = 0; | |
79dda75a | 390 | had_write_register(intelhaddata, AUD_BUF_CONFIG, buf_cfg.buf_cfgval); |
5dab11d8 JA |
391 | |
392 | channels = substream->runtime->channels; | |
393 | cfg_val.cfg_regx_v2.num_ch = channels - 2; | |
394 | if (channels <= 2) | |
395 | cfg_val.cfg_regx_v2.layout = LAYOUT0; | |
396 | else | |
397 | cfg_val.cfg_regx_v2.layout = LAYOUT1; | |
398 | ||
964ca808 | 399 | cfg_val.cfg_regx_v2.val_bit = 1; |
79dda75a | 400 | had_write_register(intelhaddata, AUD_CONFIG, cfg_val.cfg_regval); |
5dab11d8 JA |
401 | return 0; |
402 | } | |
403 | ||
5dab11d8 JA |
404 | /* |
405 | * Compute derived values in channel_allocations[]. | |
406 | */ | |
407 | static void init_channel_allocations(void) | |
408 | { | |
409 | int i, j; | |
410 | struct cea_channel_speaker_allocation *p; | |
411 | ||
5dab11d8 JA |
412 | for (i = 0; i < ARRAY_SIZE(channel_allocations); i++) { |
413 | p = channel_allocations + i; | |
414 | p->channels = 0; | |
415 | p->spk_mask = 0; | |
416 | for (j = 0; j < ARRAY_SIZE(p->speakers); j++) | |
417 | if (p->speakers[j]) { | |
418 | p->channels++; | |
419 | p->spk_mask |= p->speakers[j]; | |
420 | } | |
421 | } | |
422 | } | |
423 | ||
424 | /* | |
425 | * The transformation takes two steps: | |
426 | * | |
427 | * eld->spk_alloc => (eld_speaker_allocation_bits[]) => spk_mask | |
428 | * spk_mask => (channel_allocations[]) => ai->CA | |
429 | * | |
430 | * TODO: it could select the wrong CA from multiple candidates. | |
431 | */ | |
432 | static int snd_intelhad_channel_allocation(struct snd_intelhad *intelhaddata, | |
433 | int channels) | |
434 | { | |
435 | int i; | |
436 | int ca = 0; | |
437 | int spk_mask = 0; | |
438 | ||
439 | /* | |
440 | * CA defaults to 0 for basic stereo audio | |
441 | */ | |
442 | if (channels <= 2) | |
443 | return 0; | |
444 | ||
445 | /* | |
446 | * expand ELD's speaker allocation mask | |
447 | * | |
448 | * ELD tells the speaker mask in a compact(paired) form, | |
449 | * expand ELD's notions to match the ones used by Audio InfoFrame. | |
450 | */ | |
451 | ||
452 | for (i = 0; i < ARRAY_SIZE(eld_speaker_allocation_bits); i++) { | |
da864809 | 453 | if (intelhaddata->eld.speaker_allocation_block & (1 << i)) |
5dab11d8 JA |
454 | spk_mask |= eld_speaker_allocation_bits[i]; |
455 | } | |
456 | ||
457 | /* search for the first working match in the CA table */ | |
458 | for (i = 0; i < ARRAY_SIZE(channel_allocations); i++) { | |
459 | if (channels == channel_allocations[i].channels && | |
460 | (spk_mask & channel_allocations[i].spk_mask) == | |
461 | channel_allocations[i].spk_mask) { | |
462 | ca = channel_allocations[i].ca_index; | |
463 | break; | |
464 | } | |
465 | } | |
466 | ||
c75b0476 | 467 | dev_dbg(intelhaddata->dev, "select CA 0x%x for %d\n", ca, channels); |
5dab11d8 JA |
468 | |
469 | return ca; | |
470 | } | |
471 | ||
472 | /* from speaker bit mask to ALSA API channel position */ | |
473 | static int spk_to_chmap(int spk) | |
474 | { | |
475 | struct channel_map_table *t = map_tables; | |
476 | ||
477 | for (; t->map; t++) { | |
478 | if (t->spk_mask == spk) | |
479 | return t->map; | |
480 | } | |
481 | return 0; | |
482 | } | |
483 | ||
372d855f | 484 | static void had_build_channel_allocation_map(struct snd_intelhad *intelhaddata) |
5dab11d8 JA |
485 | { |
486 | int i = 0, c = 0; | |
487 | int spk_mask = 0; | |
488 | struct snd_pcm_chmap_elem *chmap; | |
489 | u8 eld_high, eld_high_mask = 0xF0; | |
490 | u8 high_msb; | |
491 | ||
492 | chmap = kzalloc(sizeof(*chmap), GFP_KERNEL); | |
493 | if (chmap == NULL) { | |
494 | intelhaddata->chmap->chmap = NULL; | |
495 | return; | |
496 | } | |
497 | ||
c75b0476 | 498 | dev_dbg(intelhaddata->dev, "eld.speaker_allocation_block = %x\n", |
da864809 | 499 | intelhaddata->eld.speaker_allocation_block); |
5dab11d8 JA |
500 | |
501 | /* WA: Fix the max channel supported to 8 */ | |
502 | ||
503 | /* | |
504 | * Sink may support more than 8 channels, if eld_high has more than | |
505 | * one bit set. SOC supports max 8 channels. | |
506 | * Refer eld_speaker_allocation_bits, for sink speaker allocation | |
507 | */ | |
508 | ||
509 | /* if 0x2F < eld < 0x4F fall back to 0x2f, else fall back to 0x4F */ | |
da864809 | 510 | eld_high = intelhaddata->eld.speaker_allocation_block & eld_high_mask; |
5dab11d8 JA |
511 | if ((eld_high & (eld_high-1)) && (eld_high > 0x1F)) { |
512 | /* eld_high & (eld_high-1): if more than 1 bit set */ | |
513 | /* 0x1F: 7 channels */ | |
514 | for (i = 1; i < 4; i++) { | |
515 | high_msb = eld_high & (0x80 >> i); | |
516 | if (high_msb) { | |
da864809 | 517 | intelhaddata->eld.speaker_allocation_block &= |
5dab11d8 JA |
518 | high_msb | 0xF; |
519 | break; | |
520 | } | |
521 | } | |
522 | } | |
523 | ||
524 | for (i = 0; i < ARRAY_SIZE(eld_speaker_allocation_bits); i++) { | |
da864809 | 525 | if (intelhaddata->eld.speaker_allocation_block & (1 << i)) |
5dab11d8 JA |
526 | spk_mask |= eld_speaker_allocation_bits[i]; |
527 | } | |
528 | ||
529 | for (i = 0; i < ARRAY_SIZE(channel_allocations); i++) { | |
530 | if (spk_mask == channel_allocations[i].spk_mask) { | |
531 | for (c = 0; c < channel_allocations[i].channels; c++) { | |
532 | chmap->map[c] = spk_to_chmap( | |
533 | channel_allocations[i].speakers[ | |
534 | (MAX_SPEAKERS - 1)-c]); | |
535 | } | |
536 | chmap->channels = channel_allocations[i].channels; | |
537 | intelhaddata->chmap->chmap = chmap; | |
538 | break; | |
539 | } | |
540 | } | |
541 | if (i >= ARRAY_SIZE(channel_allocations)) { | |
542 | intelhaddata->chmap->chmap = NULL; | |
543 | kfree(chmap); | |
544 | } | |
545 | } | |
546 | ||
547 | /* | |
548 | * ALSA API channel-map control callbacks | |
549 | */ | |
550 | static int had_chmap_ctl_info(struct snd_kcontrol *kcontrol, | |
551 | struct snd_ctl_elem_info *uinfo) | |
552 | { | |
553 | struct snd_pcm_chmap *info = snd_kcontrol_chip(kcontrol); | |
554 | struct snd_intelhad *intelhaddata = info->private_data; | |
555 | ||
556 | if (intelhaddata->drv_status == HAD_DRV_DISCONNECTED) | |
557 | return -ENODEV; | |
558 | uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER; | |
559 | uinfo->count = HAD_MAX_CHANNEL; | |
560 | uinfo->value.integer.min = 0; | |
561 | uinfo->value.integer.max = SNDRV_CHMAP_LAST; | |
562 | return 0; | |
563 | } | |
564 | ||
565 | static int had_chmap_ctl_get(struct snd_kcontrol *kcontrol, | |
566 | struct snd_ctl_elem_value *ucontrol) | |
567 | { | |
568 | struct snd_pcm_chmap *info = snd_kcontrol_chip(kcontrol); | |
569 | struct snd_intelhad *intelhaddata = info->private_data; | |
570 | int i = 0; | |
571 | const struct snd_pcm_chmap_elem *chmap; | |
572 | ||
573 | if (intelhaddata->drv_status == HAD_DRV_DISCONNECTED) | |
574 | return -ENODEV; | |
575 | if (intelhaddata->chmap->chmap == NULL) | |
576 | return -ENODATA; | |
577 | chmap = intelhaddata->chmap->chmap; | |
c75b0476 | 578 | for (i = 0; i < chmap->channels; i++) |
5dab11d8 | 579 | ucontrol->value.integer.value[i] = chmap->map[i]; |
5dab11d8 JA |
580 | |
581 | return 0; | |
582 | } | |
583 | ||
584 | static int had_register_chmap_ctls(struct snd_intelhad *intelhaddata, | |
585 | struct snd_pcm *pcm) | |
586 | { | |
587 | int err = 0; | |
588 | ||
589 | err = snd_pcm_add_chmap_ctls(pcm, SNDRV_PCM_STREAM_PLAYBACK, | |
590 | NULL, 0, (unsigned long)intelhaddata, | |
591 | &intelhaddata->chmap); | |
592 | if (err < 0) | |
593 | return err; | |
594 | ||
595 | intelhaddata->chmap->private_data = intelhaddata; | |
596 | intelhaddata->kctl = intelhaddata->chmap->kctl; | |
597 | intelhaddata->kctl->info = had_chmap_ctl_info; | |
598 | intelhaddata->kctl->get = had_chmap_ctl_get; | |
599 | intelhaddata->chmap->chmap = NULL; | |
600 | return 0; | |
601 | } | |
602 | ||
76296ef0 TI |
603 | /* |
604 | * snd_intelhad_prog_dip - to initialize Data Island Packets registers | |
5dab11d8 JA |
605 | * |
606 | * @substream:substream for which the prepare function is called | |
607 | * @intelhaddata:substream private data | |
608 | * | |
609 | * This function is called in the prepare callback | |
610 | */ | |
76296ef0 TI |
611 | static void snd_intelhad_prog_dip(struct snd_pcm_substream *substream, |
612 | struct snd_intelhad *intelhaddata) | |
5dab11d8 JA |
613 | { |
614 | int i; | |
615 | union aud_ctrl_st ctrl_state = {.ctrl_val = 0}; | |
616 | union aud_info_frame2 frame2 = {.fr2_val = 0}; | |
617 | union aud_info_frame3 frame3 = {.fr3_val = 0}; | |
618 | u8 checksum = 0; | |
964ca808 | 619 | u32 info_frame; |
5dab11d8 JA |
620 | int channels; |
621 | ||
622 | channels = substream->runtime->channels; | |
623 | ||
79dda75a | 624 | had_write_register(intelhaddata, AUD_CNTL_ST, ctrl_state.ctrl_val); |
5dab11d8 | 625 | |
964ca808 PLB |
626 | if (intelhaddata->dp_output) { |
627 | info_frame = DP_INFO_FRAME_WORD1; | |
628 | frame2.fr2_val = 1; | |
629 | } else { | |
630 | info_frame = HDMI_INFO_FRAME_WORD1; | |
631 | frame2.fr2_regx.chnl_cnt = substream->runtime->channels - 1; | |
5dab11d8 | 632 | |
964ca808 PLB |
633 | frame3.fr3_regx.chnl_alloc = snd_intelhad_channel_allocation( |
634 | intelhaddata, channels); | |
5dab11d8 | 635 | |
964ca808 PLB |
636 | /*Calculte the byte wide checksum for all valid DIP words*/ |
637 | for (i = 0; i < BYTES_PER_WORD; i++) | |
638 | checksum += (info_frame >> i*BITS_PER_BYTE) & MASK_BYTE0; | |
639 | for (i = 0; i < BYTES_PER_WORD; i++) | |
640 | checksum += (frame2.fr2_val >> i*BITS_PER_BYTE) & MASK_BYTE0; | |
641 | for (i = 0; i < BYTES_PER_WORD; i++) | |
642 | checksum += (frame3.fr3_val >> i*BITS_PER_BYTE) & MASK_BYTE0; | |
5dab11d8 | 643 | |
964ca808 PLB |
644 | frame2.fr2_regx.chksum = -(checksum); |
645 | } | |
5dab11d8 | 646 | |
79dda75a TI |
647 | had_write_register(intelhaddata, AUD_HDMIW_INFOFR_v2, info_frame); |
648 | had_write_register(intelhaddata, AUD_HDMIW_INFOFR_v2, frame2.fr2_val); | |
649 | had_write_register(intelhaddata, AUD_HDMIW_INFOFR_v2, frame3.fr3_val); | |
5dab11d8 JA |
650 | |
651 | /* program remaining DIP words with zero */ | |
652 | for (i = 0; i < HAD_MAX_DIP_WORDS-VALID_DIP_WORDS; i++) | |
79dda75a | 653 | had_write_register(intelhaddata, AUD_HDMIW_INFOFR_v2, 0x0); |
5dab11d8 JA |
654 | |
655 | ctrl_state.ctrl_regx.dip_freq = 1; | |
656 | ctrl_state.ctrl_regx.dip_en_sta = 1; | |
79dda75a | 657 | had_write_register(intelhaddata, AUD_CNTL_ST, ctrl_state.ctrl_val); |
5dab11d8 JA |
658 | } |
659 | ||
660 | /** | |
661 | * snd_intelhad_prog_buffer - programs buffer | |
662 | * address and length registers | |
663 | * | |
664 | * @substream:substream for which the prepare function is called | |
665 | * @intelhaddata:substream private data | |
666 | * | |
667 | * This function programs ring buffer address and length into registers. | |
668 | */ | |
372d855f | 669 | static int snd_intelhad_prog_buffer(struct snd_intelhad *intelhaddata, |
5dab11d8 JA |
670 | int start, int end) |
671 | { | |
672 | u32 ring_buf_addr, ring_buf_size, period_bytes; | |
673 | u8 i, num_periods; | |
674 | struct snd_pcm_substream *substream; | |
675 | ||
676 | substream = intelhaddata->stream_info.had_substream; | |
c75b0476 | 677 | if (WARN_ON(!substream)) |
5dab11d8 | 678 | return 0; |
5dab11d8 JA |
679 | |
680 | ring_buf_addr = substream->runtime->dma_addr; | |
681 | ring_buf_size = snd_pcm_lib_buffer_bytes(substream); | |
682 | intelhaddata->stream_info.ring_buf_size = ring_buf_size; | |
683 | period_bytes = frames_to_bytes(substream->runtime, | |
684 | substream->runtime->period_size); | |
685 | num_periods = substream->runtime->periods; | |
686 | ||
687 | /* | |
688 | * buffer addr should be 64 byte aligned, period bytes | |
689 | * will be used to calculate addr offset | |
690 | */ | |
691 | period_bytes &= ~0x3F; | |
692 | ||
693 | /* Hardware supports MAX_PERIODS buffers */ | |
694 | if (end >= HAD_MAX_PERIODS) | |
695 | return -EINVAL; | |
696 | ||
697 | for (i = start; i <= end; i++) { | |
698 | /* Program the buf registers with addr and len */ | |
699 | intelhaddata->buf_info[i].buf_addr = ring_buf_addr + | |
700 | (i * period_bytes); | |
701 | if (i < num_periods-1) | |
702 | intelhaddata->buf_info[i].buf_size = period_bytes; | |
703 | else | |
704 | intelhaddata->buf_info[i].buf_size = ring_buf_size - | |
705 | (period_bytes*i); | |
706 | ||
79dda75a TI |
707 | had_write_register(intelhaddata, |
708 | AUD_BUF_A_ADDR + (i * HAD_REG_WIDTH), | |
5dab11d8 JA |
709 | intelhaddata->buf_info[i].buf_addr | |
710 | BIT(0) | BIT(1)); | |
79dda75a TI |
711 | had_write_register(intelhaddata, |
712 | AUD_BUF_A_LENGTH + (i * HAD_REG_WIDTH), | |
5dab11d8 JA |
713 | period_bytes); |
714 | intelhaddata->buf_info[i].is_valid = true; | |
715 | } | |
c75b0476 TI |
716 | dev_dbg(intelhaddata->dev, "%s:buf[%d-%d] addr=%#x and size=%d\n", |
717 | __func__, start, end, | |
718 | intelhaddata->buf_info[start].buf_addr, | |
719 | intelhaddata->buf_info[start].buf_size); | |
5dab11d8 JA |
720 | intelhaddata->valid_buf_cnt = num_periods; |
721 | return 0; | |
722 | } | |
723 | ||
372d855f | 724 | static int snd_intelhad_read_len(struct snd_intelhad *intelhaddata) |
5dab11d8 JA |
725 | { |
726 | int i, retval = 0; | |
727 | u32 len[4]; | |
728 | ||
729 | for (i = 0; i < 4 ; i++) { | |
79dda75a TI |
730 | had_read_register(intelhaddata, |
731 | AUD_BUF_A_LENGTH + (i * HAD_REG_WIDTH), | |
732 | &len[i]); | |
5dab11d8 JA |
733 | if (!len[i]) |
734 | retval++; | |
735 | } | |
736 | if (retval != 1) { | |
737 | for (i = 0; i < 4 ; i++) | |
c75b0476 TI |
738 | dev_dbg(intelhaddata->dev, "buf[%d] size=%d\n", |
739 | i, len[i]); | |
5dab11d8 JA |
740 | } |
741 | ||
742 | return retval; | |
743 | } | |
744 | ||
964ca808 PLB |
745 | static int had_calculate_maud_value(u32 aud_samp_freq, u32 link_rate) |
746 | { | |
747 | u32 maud_val; | |
748 | ||
749 | /* Select maud according to DP 1.2 spec*/ | |
750 | if (link_rate == DP_2_7_GHZ) { | |
751 | switch (aud_samp_freq) { | |
752 | case AUD_SAMPLE_RATE_32: | |
753 | maud_val = AUD_SAMPLE_RATE_32_DP_2_7_MAUD_VAL; | |
754 | break; | |
755 | ||
756 | case AUD_SAMPLE_RATE_44_1: | |
757 | maud_val = AUD_SAMPLE_RATE_44_1_DP_2_7_MAUD_VAL; | |
758 | break; | |
759 | ||
760 | case AUD_SAMPLE_RATE_48: | |
761 | maud_val = AUD_SAMPLE_RATE_48_DP_2_7_MAUD_VAL; | |
762 | break; | |
763 | ||
764 | case AUD_SAMPLE_RATE_88_2: | |
765 | maud_val = AUD_SAMPLE_RATE_88_2_DP_2_7_MAUD_VAL; | |
766 | break; | |
767 | ||
768 | case AUD_SAMPLE_RATE_96: | |
769 | maud_val = AUD_SAMPLE_RATE_96_DP_2_7_MAUD_VAL; | |
770 | break; | |
771 | ||
772 | case AUD_SAMPLE_RATE_176_4: | |
773 | maud_val = AUD_SAMPLE_RATE_176_4_DP_2_7_MAUD_VAL; | |
774 | break; | |
775 | ||
776 | case HAD_MAX_RATE: | |
777 | maud_val = HAD_MAX_RATE_DP_2_7_MAUD_VAL; | |
778 | break; | |
779 | ||
780 | default: | |
781 | maud_val = -EINVAL; | |
782 | break; | |
783 | } | |
784 | } else if (link_rate == DP_1_62_GHZ) { | |
785 | switch (aud_samp_freq) { | |
786 | case AUD_SAMPLE_RATE_32: | |
787 | maud_val = AUD_SAMPLE_RATE_32_DP_1_62_MAUD_VAL; | |
788 | break; | |
789 | ||
790 | case AUD_SAMPLE_RATE_44_1: | |
791 | maud_val = AUD_SAMPLE_RATE_44_1_DP_1_62_MAUD_VAL; | |
792 | break; | |
793 | ||
794 | case AUD_SAMPLE_RATE_48: | |
795 | maud_val = AUD_SAMPLE_RATE_48_DP_1_62_MAUD_VAL; | |
796 | break; | |
797 | ||
798 | case AUD_SAMPLE_RATE_88_2: | |
799 | maud_val = AUD_SAMPLE_RATE_88_2_DP_1_62_MAUD_VAL; | |
800 | break; | |
801 | ||
802 | case AUD_SAMPLE_RATE_96: | |
803 | maud_val = AUD_SAMPLE_RATE_96_DP_1_62_MAUD_VAL; | |
804 | break; | |
805 | ||
806 | case AUD_SAMPLE_RATE_176_4: | |
807 | maud_val = AUD_SAMPLE_RATE_176_4_DP_1_62_MAUD_VAL; | |
808 | break; | |
809 | ||
810 | case HAD_MAX_RATE: | |
811 | maud_val = HAD_MAX_RATE_DP_1_62_MAUD_VAL; | |
812 | break; | |
813 | ||
814 | default: | |
815 | maud_val = -EINVAL; | |
816 | break; | |
817 | } | |
818 | } else | |
819 | maud_val = -EINVAL; | |
820 | ||
821 | return maud_val; | |
822 | } | |
823 | ||
76296ef0 TI |
824 | /* |
825 | * snd_intelhad_prog_cts - Program HDMI audio CTS value | |
5dab11d8 JA |
826 | * |
827 | * @aud_samp_freq: sampling frequency of audio data | |
828 | * @tmds: sampling frequency of the display data | |
829 | * @n_param: N value, depends on aud_samp_freq | |
830 | * @intelhaddata:substream private data | |
831 | * | |
832 | * Program CTS register based on the audio and display sampling frequency | |
833 | */ | |
76296ef0 TI |
834 | static void snd_intelhad_prog_cts(u32 aud_samp_freq, u32 tmds, |
835 | u32 link_rate, u32 n_param, | |
836 | struct snd_intelhad *intelhaddata) | |
5dab11d8 JA |
837 | { |
838 | u32 cts_val; | |
839 | u64 dividend, divisor; | |
840 | ||
964ca808 PLB |
841 | if (intelhaddata->dp_output) { |
842 | /* Substitute cts_val with Maud according to DP 1.2 spec*/ | |
843 | cts_val = had_calculate_maud_value(aud_samp_freq, link_rate); | |
844 | } else { | |
845 | /* Calculate CTS according to HDMI 1.3a spec*/ | |
846 | dividend = (u64)tmds * n_param*1000; | |
847 | divisor = 128 * aud_samp_freq; | |
848 | cts_val = div64_u64(dividend, divisor); | |
849 | } | |
c75b0476 | 850 | dev_dbg(intelhaddata->dev, "TMDS value=%d, N value=%d, CTS Value=%d\n", |
964ca808 | 851 | tmds, n_param, cts_val); |
79dda75a | 852 | had_write_register(intelhaddata, AUD_HDMI_CTS, (BIT(24) | cts_val)); |
5dab11d8 JA |
853 | } |
854 | ||
855 | static int had_calculate_n_value(u32 aud_samp_freq) | |
856 | { | |
857 | s32 n_val; | |
858 | ||
859 | /* Select N according to HDMI 1.3a spec*/ | |
860 | switch (aud_samp_freq) { | |
861 | case AUD_SAMPLE_RATE_32: | |
862 | n_val = 4096; | |
863 | break; | |
864 | ||
865 | case AUD_SAMPLE_RATE_44_1: | |
866 | n_val = 6272; | |
867 | break; | |
868 | ||
869 | case AUD_SAMPLE_RATE_48: | |
870 | n_val = 6144; | |
871 | break; | |
872 | ||
873 | case AUD_SAMPLE_RATE_88_2: | |
874 | n_val = 12544; | |
875 | break; | |
876 | ||
877 | case AUD_SAMPLE_RATE_96: | |
878 | n_val = 12288; | |
879 | break; | |
880 | ||
881 | case AUD_SAMPLE_RATE_176_4: | |
882 | n_val = 25088; | |
883 | break; | |
884 | ||
885 | case HAD_MAX_RATE: | |
886 | n_val = 24576; | |
887 | break; | |
888 | ||
889 | default: | |
890 | n_val = -EINVAL; | |
891 | break; | |
892 | } | |
893 | return n_val; | |
894 | } | |
895 | ||
76296ef0 TI |
896 | /* |
897 | * snd_intelhad_prog_n - Program HDMI audio N value | |
5dab11d8 JA |
898 | * |
899 | * @aud_samp_freq: sampling frequency of audio data | |
900 | * @n_param: N value, depends on aud_samp_freq | |
901 | * @intelhaddata:substream private data | |
902 | * | |
903 | * This function is called in the prepare callback. | |
904 | * It programs based on the audio and display sampling frequency | |
905 | */ | |
76296ef0 TI |
906 | static int snd_intelhad_prog_n(u32 aud_samp_freq, u32 *n_param, |
907 | struct snd_intelhad *intelhaddata) | |
5dab11d8 JA |
908 | { |
909 | s32 n_val; | |
910 | ||
964ca808 PLB |
911 | if (intelhaddata->dp_output) { |
912 | /* | |
913 | * According to DP specs, Maud and Naud values hold | |
914 | * a relationship, which is stated as: | |
915 | * Maud/Naud = 512 * fs / f_LS_Clk | |
916 | * where, fs is the sampling frequency of the audio stream | |
917 | * and Naud is 32768 for Async clock. | |
918 | */ | |
919 | ||
920 | n_val = DP_NAUD_VAL; | |
921 | } else | |
922 | n_val = had_calculate_n_value(aud_samp_freq); | |
5dab11d8 JA |
923 | |
924 | if (n_val < 0) | |
925 | return n_val; | |
926 | ||
79dda75a | 927 | had_write_register(intelhaddata, AUD_N_ENABLE, (BIT(24) | n_val)); |
5dab11d8 JA |
928 | *n_param = n_val; |
929 | return 0; | |
930 | } | |
931 | ||
372d855f | 932 | static void snd_intelhad_handle_underrun(struct snd_intelhad *intelhaddata) |
5dab11d8 JA |
933 | { |
934 | u32 hdmi_status, i = 0; | |
935 | ||
936 | /* Handle Underrun interrupt within Audio Unit */ | |
79dda75a | 937 | had_write_register(intelhaddata, AUD_CONFIG, 0); |
5dab11d8 | 938 | /* Reset buffer pointers */ |
79dda75a TI |
939 | had_write_register(intelhaddata, AUD_HDMI_STATUS_v2, 1); |
940 | had_write_register(intelhaddata, AUD_HDMI_STATUS_v2, 0); | |
5dab11d8 JA |
941 | /** |
942 | * The interrupt status 'sticky' bits might not be cleared by | |
943 | * setting '1' to that bit once... | |
944 | */ | |
945 | do { /* clear bit30, 31 AUD_HDMI_STATUS */ | |
79dda75a TI |
946 | had_read_register(intelhaddata, AUD_HDMI_STATUS_v2, |
947 | &hdmi_status); | |
c75b0476 | 948 | dev_dbg(intelhaddata->dev, "HDMI status =0x%x\n", hdmi_status); |
5dab11d8 JA |
949 | if (hdmi_status & AUD_CONFIG_MASK_UNDERRUN) { |
950 | i++; | |
79dda75a TI |
951 | had_write_register(intelhaddata, |
952 | AUD_HDMI_STATUS_v2, hdmi_status); | |
5dab11d8 JA |
953 | } else |
954 | break; | |
955 | } while (i < MAX_CNT); | |
956 | if (i >= MAX_CNT) | |
c75b0476 | 957 | dev_err(intelhaddata->dev, "Unable to clear UNDERRUN bits\n"); |
5dab11d8 JA |
958 | } |
959 | ||
960 | /** | |
961 | * snd_intelhad_open - stream initializations are done here | |
962 | * @substream:substream for which the stream function is called | |
963 | * | |
964 | * This function is called whenever a PCM stream is opened | |
965 | */ | |
966 | static int snd_intelhad_open(struct snd_pcm_substream *substream) | |
967 | { | |
968 | struct snd_intelhad *intelhaddata; | |
969 | struct snd_pcm_runtime *runtime; | |
970 | struct had_stream_pvt *stream; | |
5647aec2 | 971 | struct had_stream_data *had_stream; |
5dab11d8 JA |
972 | int retval; |
973 | ||
5dab11d8 | 974 | intelhaddata = snd_pcm_substream_chip(substream); |
5647aec2 | 975 | had_stream = &intelhaddata->stream_data; |
5dab11d8 | 976 | runtime = substream->runtime; |
6ddb3ab6 | 977 | intelhaddata->underrun_count = 0; |
5dab11d8 JA |
978 | |
979 | pm_runtime_get(intelhaddata->dev); | |
980 | ||
981 | if (had_get_hwstate(intelhaddata)) { | |
c75b0476 TI |
982 | dev_dbg(intelhaddata->dev, "%s: HDMI cable plugged-out\n", |
983 | __func__); | |
5dab11d8 JA |
984 | retval = -ENODEV; |
985 | goto exit_put_handle; | |
986 | } | |
987 | ||
988 | /* Check, if device already in use */ | |
989 | if (runtime->private_data) { | |
c75b0476 | 990 | dev_dbg(intelhaddata->dev, "Device already in use\n"); |
5dab11d8 JA |
991 | retval = -EBUSY; |
992 | goto exit_put_handle; | |
993 | } | |
994 | ||
995 | /* set the runtime hw parameter with local snd_pcm_hardware struct */ | |
996 | runtime->hw = snd_intel_hadstream; | |
997 | ||
998 | stream = kzalloc(sizeof(*stream), GFP_KERNEL); | |
999 | if (!stream) { | |
1000 | retval = -ENOMEM; | |
1001 | goto exit_put_handle; | |
1002 | } | |
1003 | stream->stream_status = STREAM_INIT; | |
1004 | runtime->private_data = stream; | |
1005 | ||
1006 | retval = snd_pcm_hw_constraint_integer(runtime, | |
1007 | SNDRV_PCM_HW_PARAM_PERIODS); | |
1008 | if (retval < 0) | |
1009 | goto exit_err; | |
1010 | ||
1011 | /* Make sure, that the period size is always aligned | |
1012 | * 64byte boundary | |
1013 | */ | |
1014 | retval = snd_pcm_hw_constraint_step(substream->runtime, 0, | |
1015 | SNDRV_PCM_HW_PARAM_PERIOD_BYTES, 64); | |
1016 | if (retval < 0) { | |
c75b0476 TI |
1017 | dev_dbg(intelhaddata->dev, "%s:step_size=64 failed,err=%d\n", |
1018 | __func__, retval); | |
5dab11d8 JA |
1019 | goto exit_err; |
1020 | } | |
1021 | ||
1022 | return retval; | |
1023 | exit_err: | |
1024 | kfree(stream); | |
1025 | exit_put_handle: | |
1026 | pm_runtime_put(intelhaddata->dev); | |
1027 | runtime->private_data = NULL; | |
1028 | return retval; | |
1029 | } | |
1030 | ||
1031 | /** | |
1032 | * had_period_elapsed - updates the hardware pointer status | |
1033 | * @had_substream:substream for which the stream function is called | |
1034 | * | |
1035 | */ | |
1036 | static void had_period_elapsed(void *had_substream) | |
1037 | { | |
1038 | struct snd_pcm_substream *substream = had_substream; | |
1039 | struct had_stream_pvt *stream; | |
1040 | ||
5dab11d8 JA |
1041 | if (!substream || !substream->runtime) |
1042 | return; | |
1043 | stream = substream->runtime->private_data; | |
1044 | if (!stream) | |
1045 | return; | |
1046 | ||
1047 | if (stream->stream_status != STREAM_RUNNING) | |
1048 | return; | |
1049 | snd_pcm_period_elapsed(substream); | |
1050 | } | |
1051 | ||
1052 | /** | |
1053 | * snd_intelhad_init_stream - internal function to initialize stream info | |
1054 | * @substream:substream for which the stream function is called | |
1055 | * | |
1056 | */ | |
1057 | static int snd_intelhad_init_stream(struct snd_pcm_substream *substream) | |
1058 | { | |
1059 | struct snd_intelhad *intelhaddata = snd_pcm_substream_chip(substream); | |
1060 | ||
5dab11d8 JA |
1061 | intelhaddata->stream_info.period_elapsed = had_period_elapsed; |
1062 | intelhaddata->stream_info.had_substream = substream; | |
1063 | intelhaddata->stream_info.buffer_ptr = 0; | |
1064 | intelhaddata->stream_info.buffer_rendered = 0; | |
1065 | intelhaddata->stream_info.sfreq = substream->runtime->rate; | |
1066 | return 0; | |
1067 | } | |
1068 | ||
1069 | /** | |
1070 | * snd_intelhad_close- to free parameteres when stream is stopped | |
1071 | * | |
1072 | * @substream: substream for which the function is called | |
1073 | * | |
1074 | * This function is called by ALSA framework when stream is stopped | |
1075 | */ | |
1076 | static int snd_intelhad_close(struct snd_pcm_substream *substream) | |
1077 | { | |
1078 | struct snd_intelhad *intelhaddata; | |
1079 | struct snd_pcm_runtime *runtime; | |
1080 | ||
5dab11d8 JA |
1081 | intelhaddata = snd_pcm_substream_chip(substream); |
1082 | runtime = substream->runtime; | |
1083 | ||
c75b0476 | 1084 | if (WARN_ON(!runtime->private_data)) |
5dab11d8 | 1085 | return 0; |
5dab11d8 JA |
1086 | |
1087 | intelhaddata->stream_info.buffer_rendered = 0; | |
1088 | intelhaddata->stream_info.buffer_ptr = 0; | |
1089 | intelhaddata->stream_info.str_id = 0; | |
1090 | intelhaddata->stream_info.had_substream = NULL; | |
1091 | ||
1092 | /* Check if following drv_status modification is required - VA */ | |
1093 | if (intelhaddata->drv_status != HAD_DRV_DISCONNECTED) { | |
1094 | intelhaddata->drv_status = HAD_DRV_CONNECTED; | |
c75b0476 TI |
1095 | dev_dbg(intelhaddata->dev, |
1096 | "%s @ %d:DEBUG PLUG/UNPLUG : HAD_DRV_CONNECTED\n", | |
5dab11d8 JA |
1097 | __func__, __LINE__); |
1098 | } | |
1099 | kfree(runtime->private_data); | |
1100 | runtime->private_data = NULL; | |
1101 | pm_runtime_put(intelhaddata->dev); | |
1102 | return 0; | |
1103 | } | |
1104 | ||
1105 | /** | |
1106 | * snd_intelhad_hw_params- to setup the hardware parameters | |
1107 | * like allocating the buffers | |
1108 | * | |
1109 | * @substream: substream for which the function is called | |
1110 | * @hw_params: hardware parameters | |
1111 | * | |
1112 | * This function is called by ALSA framework when hardware params are set | |
1113 | */ | |
1114 | static int snd_intelhad_hw_params(struct snd_pcm_substream *substream, | |
1115 | struct snd_pcm_hw_params *hw_params) | |
1116 | { | |
c75b0476 | 1117 | struct snd_intelhad *intelhaddata; |
5dab11d8 JA |
1118 | unsigned long addr; |
1119 | int pages, buf_size, retval; | |
1120 | ||
5dab11d8 JA |
1121 | if (!hw_params) |
1122 | return -EINVAL; | |
1123 | ||
c75b0476 | 1124 | intelhaddata = snd_pcm_substream_chip(substream); |
5dab11d8 JA |
1125 | buf_size = params_buffer_bytes(hw_params); |
1126 | retval = snd_pcm_lib_malloc_pages(substream, buf_size); | |
1127 | if (retval < 0) | |
1128 | return retval; | |
c75b0476 TI |
1129 | dev_dbg(intelhaddata->dev, "%s:allocated memory = %d\n", |
1130 | __func__, buf_size); | |
5dab11d8 JA |
1131 | /* mark the pages as uncached region */ |
1132 | addr = (unsigned long) substream->runtime->dma_area; | |
1133 | pages = (substream->runtime->dma_bytes + PAGE_SIZE - 1) / PAGE_SIZE; | |
1134 | retval = set_memory_uc(addr, pages); | |
1135 | if (retval) { | |
c75b0476 TI |
1136 | dev_err(intelhaddata->dev, "set_memory_uc failed.Error:%d\n", |
1137 | retval); | |
5dab11d8 JA |
1138 | return retval; |
1139 | } | |
1140 | memset(substream->runtime->dma_area, 0, buf_size); | |
1141 | ||
1142 | return retval; | |
1143 | } | |
1144 | ||
1145 | /** | |
1146 | * snd_intelhad_hw_free- to release the resources allocated during | |
1147 | * hardware params setup | |
1148 | * | |
1149 | * @substream: substream for which the function is called | |
1150 | * | |
1151 | * This function is called by ALSA framework before close callback. | |
1152 | * | |
1153 | */ | |
1154 | static int snd_intelhad_hw_free(struct snd_pcm_substream *substream) | |
1155 | { | |
1156 | unsigned long addr; | |
1157 | u32 pages; | |
1158 | ||
5dab11d8 JA |
1159 | /* mark back the pages as cached/writeback region before the free */ |
1160 | if (substream->runtime->dma_area != NULL) { | |
1161 | addr = (unsigned long) substream->runtime->dma_area; | |
1162 | pages = (substream->runtime->dma_bytes + PAGE_SIZE - 1) / | |
1163 | PAGE_SIZE; | |
1164 | set_memory_wb(addr, pages); | |
1165 | return snd_pcm_lib_free_pages(substream); | |
1166 | } | |
1167 | return 0; | |
1168 | } | |
1169 | ||
1170 | /** | |
1171 | * snd_intelhad_pcm_trigger - stream activities are handled here | |
1172 | * @substream:substream for which the stream function is called | |
1173 | * @cmd:the stream commamd thats requested from upper layer | |
1174 | * This function is called whenever an a stream activity is invoked | |
1175 | */ | |
1176 | static int snd_intelhad_pcm_trigger(struct snd_pcm_substream *substream, | |
1177 | int cmd) | |
1178 | { | |
da864809 | 1179 | int retval = 0; |
5dab11d8 JA |
1180 | unsigned long flag_irq; |
1181 | struct snd_intelhad *intelhaddata; | |
1182 | struct had_stream_pvt *stream; | |
5647aec2 | 1183 | struct had_stream_data *had_stream; |
5dab11d8 | 1184 | |
5dab11d8 JA |
1185 | intelhaddata = snd_pcm_substream_chip(substream); |
1186 | stream = substream->runtime->private_data; | |
5647aec2 | 1187 | had_stream = &intelhaddata->stream_data; |
5dab11d8 JA |
1188 | |
1189 | switch (cmd) { | |
1190 | case SNDRV_PCM_TRIGGER_START: | |
5dab11d8 JA |
1191 | /* Disable local INTRs till register prgmng is done */ |
1192 | if (had_get_hwstate(intelhaddata)) { | |
c75b0476 TI |
1193 | dev_dbg(intelhaddata->dev, |
1194 | "_START: HDMI cable plugged-out\n"); | |
5dab11d8 JA |
1195 | retval = -ENODEV; |
1196 | break; | |
1197 | } | |
1198 | stream->stream_status = STREAM_RUNNING; | |
1199 | ||
1200 | had_stream->stream_type = HAD_RUNNING_STREAM; | |
1201 | ||
1202 | /* Enable Audio */ | |
da864809 TI |
1203 | snd_intelhad_enable_audio_int(intelhaddata, true); |
1204 | snd_intelhad_enable_audio(intelhaddata, true); | |
5dab11d8 JA |
1205 | break; |
1206 | ||
1207 | case SNDRV_PCM_TRIGGER_STOP: | |
5dab11d8 JA |
1208 | spin_lock_irqsave(&intelhaddata->had_spinlock, flag_irq); |
1209 | intelhaddata->stream_info.str_id = 0; | |
1210 | intelhaddata->curr_buf = 0; | |
1211 | ||
c75b0476 | 1212 | /* Stop reporting BUFFER_DONE/UNDERRUN to above layers */ |
5dab11d8 JA |
1213 | |
1214 | had_stream->stream_type = HAD_INIT; | |
1215 | spin_unlock_irqrestore(&intelhaddata->had_spinlock, flag_irq); | |
1216 | /* Disable Audio */ | |
da864809 TI |
1217 | snd_intelhad_enable_audio_int(intelhaddata, false); |
1218 | snd_intelhad_enable_audio(intelhaddata, false); | |
5dab11d8 | 1219 | /* Reset buffer pointers */ |
79dda75a TI |
1220 | snd_intelhad_reset_audio(intelhaddata, 1); |
1221 | snd_intelhad_reset_audio(intelhaddata, 0); | |
5dab11d8 | 1222 | stream->stream_status = STREAM_DROPPED; |
da864809 | 1223 | snd_intelhad_enable_audio_int(intelhaddata, false); |
5dab11d8 JA |
1224 | break; |
1225 | ||
1226 | default: | |
1227 | retval = -EINVAL; | |
1228 | } | |
1229 | return retval; | |
1230 | } | |
1231 | ||
1232 | /** | |
1233 | * snd_intelhad_pcm_prepare- internal preparation before starting a stream | |
1234 | * | |
1235 | * @substream: substream for which the function is called | |
1236 | * | |
1237 | * This function is called when a stream is started for internal preparation. | |
1238 | */ | |
1239 | static int snd_intelhad_pcm_prepare(struct snd_pcm_substream *substream) | |
1240 | { | |
1241 | int retval; | |
1242 | u32 disp_samp_freq, n_param; | |
964ca808 | 1243 | u32 link_rate = 0; |
5dab11d8 JA |
1244 | struct snd_intelhad *intelhaddata; |
1245 | struct snd_pcm_runtime *runtime; | |
5647aec2 | 1246 | struct had_stream_data *had_stream; |
5dab11d8 | 1247 | |
5dab11d8 JA |
1248 | intelhaddata = snd_pcm_substream_chip(substream); |
1249 | runtime = substream->runtime; | |
5647aec2 | 1250 | had_stream = &intelhaddata->stream_data; |
5dab11d8 JA |
1251 | |
1252 | if (had_get_hwstate(intelhaddata)) { | |
c75b0476 TI |
1253 | dev_dbg(intelhaddata->dev, "%s: HDMI cable plugged-out\n", |
1254 | __func__); | |
5dab11d8 JA |
1255 | retval = -ENODEV; |
1256 | goto prep_end; | |
1257 | } | |
1258 | ||
c75b0476 | 1259 | dev_dbg(intelhaddata->dev, "period_size=%d\n", |
5dab11d8 | 1260 | (int)frames_to_bytes(runtime, runtime->period_size)); |
c75b0476 TI |
1261 | dev_dbg(intelhaddata->dev, "periods=%d\n", runtime->periods); |
1262 | dev_dbg(intelhaddata->dev, "buffer_size=%d\n", | |
1263 | (int)snd_pcm_lib_buffer_bytes(substream)); | |
1264 | dev_dbg(intelhaddata->dev, "rate=%d\n", runtime->rate); | |
1265 | dev_dbg(intelhaddata->dev, "channels=%d\n", runtime->channels); | |
5dab11d8 JA |
1266 | |
1267 | if (intelhaddata->stream_info.str_id) { | |
c75b0476 TI |
1268 | dev_dbg(intelhaddata->dev, |
1269 | "_prepare is called for existing str_id#%d\n", | |
5dab11d8 JA |
1270 | intelhaddata->stream_info.str_id); |
1271 | retval = snd_intelhad_pcm_trigger(substream, | |
1272 | SNDRV_PCM_TRIGGER_STOP); | |
1273 | return retval; | |
1274 | } | |
1275 | ||
1276 | retval = snd_intelhad_init_stream(substream); | |
1277 | if (retval) | |
1278 | goto prep_end; | |
1279 | ||
1280 | ||
1281 | /* Get N value in KHz */ | |
da864809 | 1282 | disp_samp_freq = intelhaddata->tmds_clock_speed; |
5dab11d8 | 1283 | |
76296ef0 TI |
1284 | retval = snd_intelhad_prog_n(substream->runtime->rate, &n_param, |
1285 | intelhaddata); | |
5dab11d8 | 1286 | if (retval) { |
c75b0476 TI |
1287 | dev_err(intelhaddata->dev, |
1288 | "programming N value failed %#x\n", retval); | |
5dab11d8 JA |
1289 | goto prep_end; |
1290 | } | |
964ca808 PLB |
1291 | |
1292 | if (intelhaddata->dp_output) | |
da864809 | 1293 | link_rate = intelhaddata->link_rate; |
964ca808 | 1294 | |
76296ef0 TI |
1295 | snd_intelhad_prog_cts(substream->runtime->rate, |
1296 | disp_samp_freq, link_rate, | |
1297 | n_param, intelhaddata); | |
5dab11d8 | 1298 | |
76296ef0 | 1299 | snd_intelhad_prog_dip(substream, intelhaddata); |
5dab11d8 | 1300 | |
76296ef0 | 1301 | retval = snd_intelhad_audio_ctrl(substream, intelhaddata); |
5dab11d8 JA |
1302 | |
1303 | /* Prog buffer address */ | |
1304 | retval = snd_intelhad_prog_buffer(intelhaddata, | |
1305 | HAD_BUF_TYPE_A, HAD_BUF_TYPE_D); | |
1306 | ||
1307 | /* | |
1308 | * Program channel mapping in following order: | |
1309 | * FL, FR, C, LFE, RL, RR | |
1310 | */ | |
1311 | ||
79dda75a | 1312 | had_write_register(intelhaddata, AUD_BUF_CH_SWAP, SWAP_LFE_CENTER); |
5dab11d8 JA |
1313 | |
1314 | prep_end: | |
1315 | return retval; | |
1316 | } | |
1317 | ||
1318 | /** | |
1319 | * snd_intelhad_pcm_pointer- to send the current buffer pointerprocessed by hw | |
1320 | * | |
1321 | * @substream: substream for which the function is called | |
1322 | * | |
1323 | * This function is called by ALSA framework to get the current hw buffer ptr | |
1324 | * when a period is elapsed | |
1325 | */ | |
1326 | static snd_pcm_uframes_t snd_intelhad_pcm_pointer( | |
1327 | struct snd_pcm_substream *substream) | |
1328 | { | |
1329 | struct snd_intelhad *intelhaddata; | |
1330 | u32 bytes_rendered = 0; | |
1331 | u32 t; | |
1332 | int buf_id; | |
1333 | ||
5dab11d8 JA |
1334 | intelhaddata = snd_pcm_substream_chip(substream); |
1335 | ||
1336 | if (intelhaddata->flag_underrun) { | |
1337 | intelhaddata->flag_underrun = 0; | |
1338 | return SNDRV_PCM_POS_XRUN; | |
1339 | } | |
1340 | ||
1341 | /* Use a hw register to calculate sub-period position reports. | |
1342 | * This makes PulseAudio happier. | |
1343 | */ | |
1344 | ||
1345 | buf_id = intelhaddata->curr_buf % 4; | |
79dda75a TI |
1346 | had_read_register(intelhaddata, |
1347 | AUD_BUF_A_LENGTH + (buf_id * HAD_REG_WIDTH), &t); | |
232892fb JA |
1348 | |
1349 | if ((t == 0) || (t == ((u32)-1L))) { | |
6ddb3ab6 | 1350 | intelhaddata->underrun_count++; |
c75b0476 TI |
1351 | dev_dbg(intelhaddata->dev, |
1352 | "discovered buffer done for buf %d, count = %d\n", | |
6ddb3ab6 | 1353 | buf_id, intelhaddata->underrun_count); |
232892fb | 1354 | |
6ddb3ab6 | 1355 | if (intelhaddata->underrun_count > (HAD_MIN_PERIODS/2)) { |
c75b0476 TI |
1356 | dev_dbg(intelhaddata->dev, |
1357 | "assume audio_codec_reset, underrun = %d - do xrun\n", | |
6ddb3ab6 TI |
1358 | intelhaddata->underrun_count); |
1359 | intelhaddata->underrun_count = 0; | |
232892fb JA |
1360 | return SNDRV_PCM_POS_XRUN; |
1361 | } | |
1362 | } else { | |
1363 | /* Reset Counter */ | |
6ddb3ab6 | 1364 | intelhaddata->underrun_count = 0; |
5dab11d8 | 1365 | } |
232892fb | 1366 | |
5dab11d8 JA |
1367 | t = intelhaddata->buf_info[buf_id].buf_size - t; |
1368 | ||
1369 | if (intelhaddata->stream_info.buffer_rendered) | |
1370 | div_u64_rem(intelhaddata->stream_info.buffer_rendered, | |
1371 | intelhaddata->stream_info.ring_buf_size, | |
1372 | &(bytes_rendered)); | |
1373 | ||
1374 | intelhaddata->stream_info.buffer_ptr = bytes_to_frames( | |
1375 | substream->runtime, | |
1376 | bytes_rendered + t); | |
1377 | return intelhaddata->stream_info.buffer_ptr; | |
1378 | } | |
1379 | ||
1380 | /** | |
1381 | * snd_intelhad_pcm_mmap- mmaps a kernel buffer to user space for copying data | |
1382 | * | |
1383 | * @substream: substream for which the function is called | |
1384 | * @vma: struct instance of memory VMM memory area | |
1385 | * | |
1386 | * This function is called by OS when a user space component | |
1387 | * tries to get mmap memory from driver | |
1388 | */ | |
1389 | static int snd_intelhad_pcm_mmap(struct snd_pcm_substream *substream, | |
1390 | struct vm_area_struct *vma) | |
1391 | { | |
5dab11d8 JA |
1392 | vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot); |
1393 | return remap_pfn_range(vma, vma->vm_start, | |
1394 | substream->dma_buffer.addr >> PAGE_SHIFT, | |
1395 | vma->vm_end - vma->vm_start, vma->vm_page_prot); | |
1396 | } | |
1397 | ||
da864809 | 1398 | static int hdmi_audio_mode_change(struct snd_intelhad *intelhaddata) |
5dab11d8 | 1399 | { |
da864809 | 1400 | struct snd_pcm_substream *substream; |
5dab11d8 JA |
1401 | int retval = 0; |
1402 | u32 disp_samp_freq, n_param; | |
964ca808 | 1403 | u32 link_rate = 0; |
5dab11d8 | 1404 | |
da864809 TI |
1405 | substream = intelhaddata->stream_info.had_substream; |
1406 | if (!substream || !substream->runtime) | |
1407 | return 0; | |
5dab11d8 JA |
1408 | |
1409 | /* Disable Audio */ | |
da864809 | 1410 | snd_intelhad_enable_audio(intelhaddata, false); |
5dab11d8 JA |
1411 | |
1412 | /* Update CTS value */ | |
da864809 | 1413 | disp_samp_freq = intelhaddata->tmds_clock_speed; |
5dab11d8 | 1414 | |
76296ef0 TI |
1415 | retval = snd_intelhad_prog_n(substream->runtime->rate, &n_param, |
1416 | intelhaddata); | |
5dab11d8 | 1417 | if (retval) { |
c75b0476 TI |
1418 | dev_err(intelhaddata->dev, |
1419 | "programming N value failed %#x\n", retval); | |
5dab11d8 JA |
1420 | goto out; |
1421 | } | |
964ca808 PLB |
1422 | |
1423 | if (intelhaddata->dp_output) | |
da864809 | 1424 | link_rate = intelhaddata->link_rate; |
964ca808 | 1425 | |
76296ef0 TI |
1426 | snd_intelhad_prog_cts(substream->runtime->rate, |
1427 | disp_samp_freq, link_rate, | |
1428 | n_param, intelhaddata); | |
5dab11d8 JA |
1429 | |
1430 | /* Enable Audio */ | |
da864809 | 1431 | snd_intelhad_enable_audio(intelhaddata, true); |
5dab11d8 JA |
1432 | |
1433 | out: | |
1434 | return retval; | |
1435 | } | |
1436 | ||
372d855f TI |
1437 | /* |
1438 | * hdmi_lpe_audio_suspend - power management suspend function | |
1439 | * | |
1440 | * @pdev: platform device | |
1441 | * | |
1442 | * This function is called by client driver to suspend the | |
1443 | * hdmi audio. | |
1444 | */ | |
1445 | static int hdmi_lpe_audio_suspend(struct platform_device *pdev, | |
1446 | pm_message_t state) | |
1447 | { | |
1448 | struct had_stream_data *had_stream; | |
1449 | unsigned long flag_irqs; | |
1450 | struct snd_pcm_substream *substream; | |
1451 | struct snd_intelhad *intelhaddata = platform_get_drvdata(pdev); | |
1452 | ||
372d855f TI |
1453 | had_stream = &intelhaddata->stream_data; |
1454 | substream = intelhaddata->stream_info.had_substream; | |
1455 | ||
e29c0f96 | 1456 | if (!pm_runtime_status_suspended(intelhaddata->dev)) { |
c75b0476 | 1457 | dev_err(intelhaddata->dev, "audio stream is active\n"); |
372d855f TI |
1458 | return -EAGAIN; |
1459 | } | |
1460 | ||
1461 | ||
1462 | spin_lock_irqsave(&intelhaddata->had_spinlock, flag_irqs); | |
1463 | if (intelhaddata->drv_status == HAD_DRV_DISCONNECTED) { | |
1464 | spin_unlock_irqrestore(&intelhaddata->had_spinlock, flag_irqs); | |
c75b0476 | 1465 | dev_dbg(intelhaddata->dev, "had not connected\n"); |
372d855f TI |
1466 | return 0; |
1467 | } | |
1468 | ||
1469 | if (intelhaddata->drv_status == HAD_DRV_SUSPENDED) { | |
1470 | spin_unlock_irqrestore(&intelhaddata->had_spinlock, flag_irqs); | |
c75b0476 | 1471 | dev_dbg(intelhaddata->dev, "had already suspended\n"); |
372d855f TI |
1472 | return 0; |
1473 | } | |
1474 | ||
1475 | intelhaddata->drv_status = HAD_DRV_SUSPENDED; | |
c75b0476 TI |
1476 | dev_dbg(intelhaddata->dev, |
1477 | "%s @ %d:DEBUG PLUG/UNPLUG : HAD_DRV_SUSPENDED\n", | |
372d855f TI |
1478 | __func__, __LINE__); |
1479 | ||
1480 | spin_unlock_irqrestore(&intelhaddata->had_spinlock, flag_irqs); | |
1481 | snd_intelhad_enable_audio_int(intelhaddata, false); | |
372d855f TI |
1482 | return 0; |
1483 | } | |
1484 | ||
1485 | /* | |
1486 | * hdmi_lpe_audio_resume - power management resume function | |
1487 | * | |
1488 | *@pdev: platform device | |
1489 | * | |
1490 | * This function is called by client driver to resume the | |
1491 | * hdmi audio. | |
1492 | */ | |
1493 | static int hdmi_lpe_audio_resume(struct platform_device *pdev) | |
1494 | { | |
1495 | struct snd_intelhad *intelhaddata = platform_get_drvdata(pdev); | |
1496 | unsigned long flag_irqs; | |
1497 | ||
372d855f TI |
1498 | spin_lock_irqsave(&intelhaddata->had_spinlock, flag_irqs); |
1499 | if (intelhaddata->drv_status == HAD_DRV_DISCONNECTED) { | |
1500 | spin_unlock_irqrestore(&intelhaddata->had_spinlock, flag_irqs); | |
c75b0476 | 1501 | dev_dbg(intelhaddata->dev, "had not connected\n"); |
372d855f TI |
1502 | return 0; |
1503 | } | |
1504 | ||
1505 | if (intelhaddata->drv_status != HAD_DRV_SUSPENDED) { | |
1506 | spin_unlock_irqrestore(&intelhaddata->had_spinlock, flag_irqs); | |
c75b0476 | 1507 | dev_err(intelhaddata->dev, "had is not in suspended state\n"); |
372d855f TI |
1508 | return 0; |
1509 | } | |
1510 | ||
1511 | if (had_get_hwstate(intelhaddata)) { | |
1512 | spin_unlock_irqrestore(&intelhaddata->had_spinlock, flag_irqs); | |
c75b0476 TI |
1513 | dev_err(intelhaddata->dev, |
1514 | "Failed to resume. Device not accessible\n"); | |
372d855f TI |
1515 | return -ENODEV; |
1516 | } | |
1517 | ||
1518 | intelhaddata->drv_status = HAD_DRV_CONNECTED; | |
c75b0476 TI |
1519 | dev_dbg(intelhaddata->dev, |
1520 | "%s @ %d:DEBUG PLUG/UNPLUG : HAD_DRV_DISCONNECTED\n", | |
372d855f TI |
1521 | __func__, __LINE__); |
1522 | spin_unlock_irqrestore(&intelhaddata->had_spinlock, flag_irqs); | |
1523 | snd_intelhad_enable_audio_int(intelhaddata, true); | |
372d855f TI |
1524 | return 0; |
1525 | } | |
1526 | ||
1527 | static inline int had_chk_intrmiss(struct snd_intelhad *intelhaddata, | |
1528 | enum intel_had_aud_buf_type buf_id) | |
1529 | { | |
1530 | int i, intr_count = 0; | |
1531 | enum intel_had_aud_buf_type buff_done; | |
1532 | u32 buf_size, buf_addr; | |
1533 | struct had_stream_data *had_stream; | |
1534 | unsigned long flag_irqs; | |
1535 | ||
1536 | had_stream = &intelhaddata->stream_data; | |
1537 | ||
1538 | buff_done = buf_id; | |
1539 | ||
1540 | intr_count = snd_intelhad_read_len(intelhaddata); | |
1541 | if (intr_count > 1) { | |
1542 | /* In case of active playback */ | |
c75b0476 TI |
1543 | dev_err(intelhaddata->dev, |
1544 | "Driver detected %d missed buffer done interrupt(s)\n", | |
1545 | (intr_count - 1)); | |
372d855f TI |
1546 | if (intr_count > 3) |
1547 | return intr_count; | |
1548 | ||
1549 | buf_id += (intr_count - 1); | |
1550 | /* Reprogram registers*/ | |
1551 | for (i = buff_done; i < buf_id; i++) { | |
1552 | int j = i % 4; | |
1553 | ||
1554 | buf_size = intelhaddata->buf_info[j].buf_size; | |
1555 | buf_addr = intelhaddata->buf_info[j].buf_addr; | |
1556 | had_write_register(intelhaddata, | |
1557 | AUD_BUF_A_LENGTH + | |
1558 | (j * HAD_REG_WIDTH), buf_size); | |
1559 | had_write_register(intelhaddata, | |
1560 | AUD_BUF_A_ADDR+(j * HAD_REG_WIDTH), | |
1561 | (buf_addr | BIT(0) | BIT(1))); | |
1562 | } | |
1563 | buf_id = buf_id % 4; | |
1564 | spin_lock_irqsave(&intelhaddata->had_spinlock, flag_irqs); | |
1565 | intelhaddata->buff_done = buf_id; | |
1566 | spin_unlock_irqrestore(&intelhaddata->had_spinlock, flag_irqs); | |
1567 | } | |
1568 | ||
1569 | return intr_count; | |
1570 | } | |
1571 | ||
1572 | static int had_process_buffer_done(struct snd_intelhad *intelhaddata) | |
1573 | { | |
1574 | u32 len = 1; | |
1575 | enum intel_had_aud_buf_type buf_id; | |
1576 | enum intel_had_aud_buf_type buff_done; | |
1577 | struct pcm_stream_info *stream; | |
1578 | u32 buf_size; | |
1579 | struct had_stream_data *had_stream; | |
1580 | int intr_count; | |
1581 | enum had_status_stream stream_type; | |
1582 | unsigned long flag_irqs; | |
1583 | ||
1584 | had_stream = &intelhaddata->stream_data; | |
1585 | stream = &intelhaddata->stream_info; | |
1586 | intr_count = 1; | |
1587 | ||
1588 | spin_lock_irqsave(&intelhaddata->had_spinlock, flag_irqs); | |
1589 | if (intelhaddata->drv_status == HAD_DRV_DISCONNECTED) { | |
1590 | spin_unlock_irqrestore(&intelhaddata->had_spinlock, flag_irqs); | |
c75b0476 TI |
1591 | dev_dbg(intelhaddata->dev, |
1592 | "%s:Device already disconnected\n", __func__); | |
372d855f TI |
1593 | return 0; |
1594 | } | |
1595 | buf_id = intelhaddata->curr_buf; | |
1596 | intelhaddata->buff_done = buf_id; | |
1597 | buff_done = intelhaddata->buff_done; | |
1598 | buf_size = intelhaddata->buf_info[buf_id].buf_size; | |
1599 | stream_type = had_stream->stream_type; | |
1600 | ||
372d855f TI |
1601 | /* Every debug statement has an implication |
1602 | * of ~5msec. Thus, avoid having >3 debug statements | |
1603 | * for each buffer_done handling. | |
1604 | */ | |
1605 | ||
1606 | /* Check for any intr_miss in case of active playback */ | |
1607 | if (had_stream->stream_type == HAD_RUNNING_STREAM) { | |
1608 | spin_unlock_irqrestore(&intelhaddata->had_spinlock, flag_irqs); | |
1609 | intr_count = had_chk_intrmiss(intelhaddata, buf_id); | |
1610 | if (!intr_count || (intr_count > 3)) { | |
c75b0476 TI |
1611 | dev_err(intelhaddata->dev, |
1612 | "HAD SW state in non-recoverable mode\n"); | |
372d855f TI |
1613 | return 0; |
1614 | } | |
1615 | buf_id += (intr_count - 1); | |
1616 | buf_id = buf_id % 4; | |
1617 | spin_lock_irqsave(&intelhaddata->had_spinlock, flag_irqs); | |
1618 | } | |
1619 | ||
1620 | intelhaddata->buf_info[buf_id].is_valid = true; | |
1621 | if (intelhaddata->valid_buf_cnt-1 == buf_id) { | |
1622 | if (had_stream->stream_type >= HAD_RUNNING_STREAM) | |
1623 | intelhaddata->curr_buf = HAD_BUF_TYPE_A; | |
1624 | } else | |
1625 | intelhaddata->curr_buf = buf_id + 1; | |
1626 | ||
1627 | spin_unlock_irqrestore(&intelhaddata->had_spinlock, flag_irqs); | |
1628 | ||
1629 | if (had_get_hwstate(intelhaddata)) { | |
c75b0476 | 1630 | dev_dbg(intelhaddata->dev, "HDMI cable plugged-out\n"); |
372d855f TI |
1631 | return 0; |
1632 | } | |
1633 | ||
1634 | /*Reprogram the registers with addr and length*/ | |
1635 | had_write_register(intelhaddata, | |
1636 | AUD_BUF_A_LENGTH + (buf_id * HAD_REG_WIDTH), | |
1637 | buf_size); | |
1638 | had_write_register(intelhaddata, | |
1639 | AUD_BUF_A_ADDR + (buf_id * HAD_REG_WIDTH), | |
1640 | intelhaddata->buf_info[buf_id].buf_addr | | |
1641 | BIT(0) | BIT(1)); | |
1642 | ||
1643 | had_read_register(intelhaddata, | |
1644 | AUD_BUF_A_LENGTH + (buf_id * HAD_REG_WIDTH), | |
1645 | &len); | |
c75b0476 | 1646 | dev_dbg(intelhaddata->dev, "%s:Enabled buf[%d]\n", __func__, buf_id); |
372d855f TI |
1647 | |
1648 | /* In case of actual data, | |
1649 | * report buffer_done to above ALSA layer | |
1650 | */ | |
1651 | buf_size = intelhaddata->buf_info[buf_id].buf_size; | |
1652 | if (stream_type >= HAD_RUNNING_STREAM) { | |
1653 | intelhaddata->stream_info.buffer_rendered += | |
1654 | (intr_count * buf_size); | |
1655 | stream->period_elapsed(stream->had_substream); | |
1656 | } | |
1657 | ||
1658 | return 0; | |
1659 | } | |
1660 | ||
1661 | static int had_process_buffer_underrun(struct snd_intelhad *intelhaddata) | |
1662 | { | |
1663 | enum intel_had_aud_buf_type buf_id; | |
1664 | struct pcm_stream_info *stream; | |
1665 | struct had_stream_data *had_stream; | |
1666 | enum had_status_stream stream_type; | |
1667 | unsigned long flag_irqs; | |
1668 | int drv_status; | |
1669 | ||
1670 | had_stream = &intelhaddata->stream_data; | |
1671 | stream = &intelhaddata->stream_info; | |
1672 | ||
1673 | spin_lock_irqsave(&intelhaddata->had_spinlock, flag_irqs); | |
1674 | buf_id = intelhaddata->curr_buf; | |
1675 | stream_type = had_stream->stream_type; | |
1676 | intelhaddata->buff_done = buf_id; | |
1677 | drv_status = intelhaddata->drv_status; | |
1678 | if (stream_type == HAD_RUNNING_STREAM) | |
1679 | intelhaddata->curr_buf = HAD_BUF_TYPE_A; | |
1680 | ||
1681 | spin_unlock_irqrestore(&intelhaddata->had_spinlock, flag_irqs); | |
1682 | ||
c75b0476 | 1683 | dev_dbg(intelhaddata->dev, "Enter:%s buf_id=%d, stream_type=%d\n", |
372d855f TI |
1684 | __func__, buf_id, stream_type); |
1685 | ||
1686 | snd_intelhad_handle_underrun(intelhaddata); | |
1687 | ||
1688 | if (drv_status == HAD_DRV_DISCONNECTED) { | |
c75b0476 TI |
1689 | dev_dbg(intelhaddata->dev, |
1690 | "%s:Device already disconnected\n", __func__); | |
372d855f TI |
1691 | return 0; |
1692 | } | |
1693 | ||
1694 | if (stream_type == HAD_RUNNING_STREAM) { | |
1695 | /* Report UNDERRUN error to above layers */ | |
1696 | intelhaddata->flag_underrun = 1; | |
1697 | stream->period_elapsed(stream->had_substream); | |
1698 | } | |
1699 | ||
1700 | return 0; | |
1701 | } | |
1702 | ||
1703 | static int had_process_hot_plug(struct snd_intelhad *intelhaddata) | |
1704 | { | |
1705 | enum intel_had_aud_buf_type buf_id; | |
1706 | struct snd_pcm_substream *substream; | |
1707 | struct had_stream_data *had_stream; | |
1708 | unsigned long flag_irqs; | |
1709 | ||
372d855f TI |
1710 | substream = intelhaddata->stream_info.had_substream; |
1711 | had_stream = &intelhaddata->stream_data; | |
1712 | ||
1713 | spin_lock_irqsave(&intelhaddata->had_spinlock, flag_irqs); | |
1714 | if (intelhaddata->drv_status == HAD_DRV_CONNECTED) { | |
c75b0476 | 1715 | dev_dbg(intelhaddata->dev, "Device already connected\n"); |
372d855f TI |
1716 | spin_unlock_irqrestore(&intelhaddata->had_spinlock, flag_irqs); |
1717 | return 0; | |
1718 | } | |
1719 | buf_id = intelhaddata->curr_buf; | |
1720 | intelhaddata->buff_done = buf_id; | |
1721 | intelhaddata->drv_status = HAD_DRV_CONNECTED; | |
c75b0476 TI |
1722 | dev_dbg(intelhaddata->dev, |
1723 | "%s @ %d:DEBUG PLUG/UNPLUG : HAD_DRV_CONNECTED\n", | |
372d855f TI |
1724 | __func__, __LINE__); |
1725 | spin_unlock_irqrestore(&intelhaddata->had_spinlock, flag_irqs); | |
1726 | ||
c75b0476 TI |
1727 | dev_dbg(intelhaddata->dev, "Processing HOT_PLUG, buf_id = %d\n", |
1728 | buf_id); | |
372d855f TI |
1729 | |
1730 | /* Safety check */ | |
1731 | if (substream) { | |
c75b0476 TI |
1732 | dev_dbg(intelhaddata->dev, |
1733 | "Force to stop the active stream by disconnection\n"); | |
372d855f TI |
1734 | /* Set runtime->state to hw_params done */ |
1735 | snd_pcm_stop(substream, SNDRV_PCM_STATE_SETUP); | |
1736 | } | |
1737 | ||
1738 | had_build_channel_allocation_map(intelhaddata); | |
1739 | ||
1740 | return 0; | |
1741 | } | |
1742 | ||
1743 | static int had_process_hot_unplug(struct snd_intelhad *intelhaddata) | |
1744 | { | |
1745 | enum intel_had_aud_buf_type buf_id; | |
1746 | struct had_stream_data *had_stream; | |
1747 | unsigned long flag_irqs; | |
1748 | ||
372d855f TI |
1749 | had_stream = &intelhaddata->stream_data; |
1750 | buf_id = intelhaddata->curr_buf; | |
1751 | ||
1752 | spin_lock_irqsave(&intelhaddata->had_spinlock, flag_irqs); | |
1753 | ||
1754 | if (intelhaddata->drv_status == HAD_DRV_DISCONNECTED) { | |
c75b0476 | 1755 | dev_dbg(intelhaddata->dev, "Device already disconnected\n"); |
372d855f TI |
1756 | spin_unlock_irqrestore(&intelhaddata->had_spinlock, flag_irqs); |
1757 | return 0; | |
1758 | ||
1759 | } else { | |
1760 | /* Disable Audio */ | |
1761 | snd_intelhad_enable_audio_int(intelhaddata, false); | |
1762 | snd_intelhad_enable_audio(intelhaddata, false); | |
1763 | } | |
1764 | ||
1765 | intelhaddata->drv_status = HAD_DRV_DISCONNECTED; | |
c75b0476 TI |
1766 | dev_dbg(intelhaddata->dev, |
1767 | "%s @ %d:DEBUG PLUG/UNPLUG : HAD_DRV_DISCONNECTED\n", | |
372d855f TI |
1768 | __func__, __LINE__); |
1769 | ||
1770 | /* Report to above ALSA layer */ | |
1771 | if (intelhaddata->stream_info.had_substream != NULL) { | |
1772 | spin_unlock_irqrestore(&intelhaddata->had_spinlock, flag_irqs); | |
372d855f TI |
1773 | snd_pcm_stop(intelhaddata->stream_info.had_substream, |
1774 | SNDRV_PCM_STATE_SETUP); | |
1775 | spin_lock_irqsave(&intelhaddata->had_spinlock, flag_irqs); | |
1776 | } | |
1777 | ||
1778 | had_stream->stream_type = HAD_INIT; | |
1779 | spin_unlock_irqrestore(&intelhaddata->had_spinlock, flag_irqs); | |
1780 | kfree(intelhaddata->chmap->chmap); | |
1781 | intelhaddata->chmap->chmap = NULL; | |
1782 | intelhaddata->audio_reg_base = NULL; | |
372d855f TI |
1783 | |
1784 | return 0; | |
1785 | } | |
1786 | ||
1787 | /* PCM operations structure and the calls back for the same */ | |
1788 | static struct snd_pcm_ops snd_intelhad_playback_ops = { | |
5dab11d8 JA |
1789 | .open = snd_intelhad_open, |
1790 | .close = snd_intelhad_close, | |
1791 | .ioctl = snd_pcm_lib_ioctl, | |
1792 | .hw_params = snd_intelhad_hw_params, | |
1793 | .hw_free = snd_intelhad_hw_free, | |
1794 | .prepare = snd_intelhad_pcm_prepare, | |
1795 | .trigger = snd_intelhad_pcm_trigger, | |
1796 | .pointer = snd_intelhad_pcm_pointer, | |
1797 | .mmap = snd_intelhad_pcm_mmap, | |
1798 | }; | |
1799 | ||
372d855f | 1800 | /* |
5dab11d8 JA |
1801 | * snd_intelhad_pcm_free - to free the memory allocated |
1802 | * | |
1803 | * @pcm: pointer to pcm instance | |
1804 | * This function is called when the device is removed | |
1805 | */ | |
1806 | static void snd_intelhad_pcm_free(struct snd_pcm *pcm) | |
1807 | { | |
5dab11d8 JA |
1808 | snd_pcm_lib_preallocate_free_for_all(pcm); |
1809 | } | |
1810 | ||
1811 | static int had_iec958_info(struct snd_kcontrol *kcontrol, | |
1812 | struct snd_ctl_elem_info *uinfo) | |
1813 | { | |
1814 | uinfo->type = SNDRV_CTL_ELEM_TYPE_IEC958; | |
1815 | uinfo->count = 1; | |
1816 | return 0; | |
1817 | } | |
1818 | ||
1819 | static int had_iec958_get(struct snd_kcontrol *kcontrol, | |
1820 | struct snd_ctl_elem_value *ucontrol) | |
1821 | { | |
1822 | struct snd_intelhad *intelhaddata = snd_kcontrol_chip(kcontrol); | |
1823 | ||
1824 | ucontrol->value.iec958.status[0] = (intelhaddata->aes_bits >> 0) & 0xff; | |
1825 | ucontrol->value.iec958.status[1] = (intelhaddata->aes_bits >> 8) & 0xff; | |
1826 | ucontrol->value.iec958.status[2] = | |
1827 | (intelhaddata->aes_bits >> 16) & 0xff; | |
1828 | ucontrol->value.iec958.status[3] = | |
1829 | (intelhaddata->aes_bits >> 24) & 0xff; | |
1830 | return 0; | |
1831 | } | |
372d855f | 1832 | |
5dab11d8 JA |
1833 | static int had_iec958_mask_get(struct snd_kcontrol *kcontrol, |
1834 | struct snd_ctl_elem_value *ucontrol) | |
1835 | { | |
1836 | ucontrol->value.iec958.status[0] = 0xff; | |
1837 | ucontrol->value.iec958.status[1] = 0xff; | |
1838 | ucontrol->value.iec958.status[2] = 0xff; | |
1839 | ucontrol->value.iec958.status[3] = 0xff; | |
1840 | return 0; | |
1841 | } | |
372d855f | 1842 | |
5dab11d8 JA |
1843 | static int had_iec958_put(struct snd_kcontrol *kcontrol, |
1844 | struct snd_ctl_elem_value *ucontrol) | |
1845 | { | |
1846 | unsigned int val; | |
1847 | struct snd_intelhad *intelhaddata = snd_kcontrol_chip(kcontrol); | |
1848 | ||
5dab11d8 JA |
1849 | val = (ucontrol->value.iec958.status[0] << 0) | |
1850 | (ucontrol->value.iec958.status[1] << 8) | | |
1851 | (ucontrol->value.iec958.status[2] << 16) | | |
1852 | (ucontrol->value.iec958.status[3] << 24); | |
1853 | if (intelhaddata->aes_bits != val) { | |
1854 | intelhaddata->aes_bits = val; | |
1855 | return 1; | |
1856 | } | |
1857 | return 1; | |
1858 | } | |
1859 | ||
1860 | static struct snd_kcontrol_new had_control_iec958_mask = { | |
1861 | .access = SNDRV_CTL_ELEM_ACCESS_READ, | |
1862 | .iface = SNDRV_CTL_ELEM_IFACE_PCM, | |
1863 | .name = SNDRV_CTL_NAME_IEC958("", PLAYBACK, MASK), | |
1864 | .info = had_iec958_info, /* shared */ | |
1865 | .get = had_iec958_mask_get, | |
1866 | }; | |
1867 | ||
1868 | static struct snd_kcontrol_new had_control_iec958 = { | |
1869 | .iface = SNDRV_CTL_ELEM_IFACE_PCM, | |
1870 | .name = SNDRV_CTL_NAME_IEC958("", PLAYBACK, DEFAULT), | |
1871 | .info = had_iec958_info, | |
1872 | .get = had_iec958_get, | |
1873 | .put = had_iec958_put | |
1874 | }; | |
1875 | ||
da864809 TI |
1876 | static void _had_wq(struct work_struct *work) |
1877 | { | |
1878 | struct snd_intelhad *ctx = | |
1879 | container_of(work, struct snd_intelhad, hdmi_audio_wq); | |
1880 | ||
1881 | had_process_hot_plug(ctx); | |
1882 | } | |
1883 | ||
1884 | static irqreturn_t display_pipe_interrupt_handler(int irq, void *dev_id) | |
1885 | { | |
1886 | struct snd_intelhad *ctx = dev_id; | |
1887 | u32 audio_stat, audio_reg; | |
1888 | ||
1889 | audio_reg = AUD_HDMI_STATUS_v2; | |
1890 | mid_hdmi_audio_read(ctx, audio_reg, &audio_stat); | |
1891 | ||
1892 | if (audio_stat & HDMI_AUDIO_UNDERRUN) { | |
1893 | mid_hdmi_audio_write(ctx, audio_reg, HDMI_AUDIO_UNDERRUN); | |
1894 | had_process_buffer_underrun(ctx); | |
1895 | } | |
1896 | ||
1897 | if (audio_stat & HDMI_AUDIO_BUFFER_DONE) { | |
1898 | mid_hdmi_audio_write(ctx, audio_reg, HDMI_AUDIO_BUFFER_DONE); | |
1899 | had_process_buffer_done(ctx); | |
1900 | } | |
1901 | ||
1902 | return IRQ_HANDLED; | |
1903 | } | |
1904 | ||
1905 | static void notify_audio_lpe(struct platform_device *pdev) | |
1906 | { | |
1907 | struct snd_intelhad *ctx = platform_get_drvdata(pdev); | |
1908 | struct intel_hdmi_lpe_audio_pdata *pdata = pdev->dev.platform_data; | |
1909 | ||
1910 | if (pdata->hdmi_connected != true) { | |
1911 | ||
1912 | dev_dbg(&pdev->dev, "%s: Event: HAD_NOTIFY_HOT_UNPLUG\n", | |
1913 | __func__); | |
1914 | ||
1915 | if (ctx->state == hdmi_connector_status_connected) { | |
1916 | ||
1917 | ctx->state = hdmi_connector_status_disconnected; | |
1918 | ||
1919 | had_process_hot_unplug(ctx); | |
1920 | } else | |
1921 | dev_dbg(&pdev->dev, "%s: Already Unplugged!\n", | |
1922 | __func__); | |
1923 | ||
1924 | } else { | |
1925 | struct intel_hdmi_lpe_audio_eld *eld = &pdata->eld; | |
1926 | ||
1927 | switch (eld->pipe_id) { | |
1928 | case 0: | |
1929 | ctx->had_config_offset = AUDIO_HDMI_CONFIG_A; | |
1930 | break; | |
1931 | case 1: | |
1932 | ctx->had_config_offset = AUDIO_HDMI_CONFIG_B; | |
1933 | break; | |
1934 | case 2: | |
1935 | ctx->had_config_offset = AUDIO_HDMI_CONFIG_C; | |
1936 | break; | |
1937 | default: | |
1938 | dev_dbg(&pdev->dev, "Invalid pipe %d\n", | |
1939 | eld->pipe_id); | |
1940 | break; | |
1941 | } | |
1942 | ||
1943 | memcpy(&ctx->eld, eld->eld_data, sizeof(ctx->eld)); | |
1944 | ||
1945 | had_process_hot_plug(ctx); | |
1946 | ||
1947 | ctx->state = hdmi_connector_status_connected; | |
1948 | ||
1949 | dev_dbg(&pdev->dev, "%s: HAD_NOTIFY_ELD : port = %d, tmds = %d\n", | |
1950 | __func__, eld->port_id, pdata->tmds_clock_speed); | |
1951 | ||
1952 | if (pdata->tmds_clock_speed) { | |
1953 | ctx->tmds_clock_speed = pdata->tmds_clock_speed; | |
1954 | ctx->dp_output = pdata->dp_output; | |
1955 | ctx->link_rate = pdata->link_rate; | |
1956 | ||
1957 | /* Process mode change if stream is active */ | |
1958 | if (ctx->stream_data.stream_type == HAD_RUNNING_STREAM) | |
1959 | hdmi_audio_mode_change(ctx); | |
1960 | } | |
1961 | } | |
1962 | } | |
1963 | ||
1964 | /* release resources */ | |
1965 | static void hdmi_lpe_audio_free(struct snd_card *card) | |
1966 | { | |
1967 | struct snd_intelhad *ctx = card->private_data; | |
1968 | ||
1969 | if (ctx->mmio_start) | |
1970 | iounmap(ctx->mmio_start); | |
1971 | if (ctx->irq >= 0) | |
1972 | free_irq(ctx->irq, ctx); | |
1973 | } | |
1974 | ||
79dda75a | 1975 | /* |
da864809 | 1976 | * hdmi_lpe_audio_probe - start bridge with i915 |
5dab11d8 | 1977 | * |
da864809 TI |
1978 | * This function is called when the i915 driver creates the |
1979 | * hdmi-lpe-audio platform device. Card creation is deferred until a | |
1980 | * hot plug event is received | |
5dab11d8 | 1981 | */ |
da864809 | 1982 | static int hdmi_lpe_audio_probe(struct platform_device *pdev) |
5dab11d8 | 1983 | { |
5dab11d8 | 1984 | struct snd_card *card; |
da864809 TI |
1985 | struct snd_intelhad *ctx; |
1986 | struct snd_pcm *pcm; | |
1987 | struct intel_hdmi_lpe_audio_pdata *pdata; | |
1988 | int irq; | |
1989 | struct resource *res_mmio; | |
1990 | int ret; | |
1991 | unsigned long flags; | |
1992 | ||
da864809 TI |
1993 | dev_dbg(&pdev->dev, "dma_mask: %p\n", pdev->dev.dma_mask); |
1994 | ||
1995 | pdata = pdev->dev.platform_data; | |
1996 | if (!pdata) { | |
1997 | dev_err(&pdev->dev, "%s: quit: pdata not allocated by i915!!\n", __func__); | |
1998 | return -EINVAL; | |
1999 | } | |
5dab11d8 | 2000 | |
da864809 TI |
2001 | /* get resources */ |
2002 | irq = platform_get_irq(pdev, 0); | |
2003 | if (irq < 0) { | |
2004 | dev_err(&pdev->dev, "Could not get irq resource\n"); | |
2005 | return -ENODEV; | |
2006 | } | |
2007 | ||
2008 | res_mmio = platform_get_resource(pdev, IORESOURCE_MEM, 0); | |
2009 | if (!res_mmio) { | |
2010 | dev_err(&pdev->dev, "Could not get IO_MEM resources\n"); | |
2011 | return -ENXIO; | |
2012 | } | |
5dab11d8 | 2013 | |
5647aec2 | 2014 | /* create a card instance with ALSA framework */ |
da864809 TI |
2015 | ret = snd_card_new(&pdev->dev, hdmi_card_index, hdmi_card_id, |
2016 | THIS_MODULE, sizeof(*ctx), &card); | |
2017 | if (ret) | |
2018 | return ret; | |
2019 | ||
2020 | ctx = card->private_data; | |
2021 | spin_lock_init(&ctx->had_spinlock); | |
2022 | ctx->drv_status = HAD_DRV_DISCONNECTED; | |
2023 | ctx->dev = &pdev->dev; | |
2024 | ctx->card = card; | |
2025 | ctx->card_id = hdmi_card_id; | |
2026 | ctx->card_index = card->number; | |
2027 | ctx->flag_underrun = 0; | |
2028 | ctx->aes_bits = SNDRV_PCM_DEFAULT_CON_SPDIF; | |
2029 | strcpy(card->driver, INTEL_HAD); | |
2030 | strcpy(card->shortname, INTEL_HAD); | |
2031 | ||
2032 | ctx->irq = -1; | |
2033 | ctx->tmds_clock_speed = DIS_SAMPLE_RATE_148_5; | |
2034 | INIT_WORK(&ctx->hdmi_audio_wq, _had_wq); | |
2035 | ctx->state = hdmi_connector_status_disconnected; | |
2036 | ||
2037 | card->private_free = hdmi_lpe_audio_free; | |
2038 | ||
2039 | /* assume pipe A as default */ | |
2040 | ctx->had_config_offset = AUDIO_HDMI_CONFIG_A; | |
2041 | ||
2042 | platform_set_drvdata(pdev, ctx); | |
2043 | ||
2044 | dev_dbg(&pdev->dev, "%s: mmio_start = 0x%x, mmio_end = 0x%x\n", | |
2045 | __func__, (unsigned int)res_mmio->start, | |
2046 | (unsigned int)res_mmio->end); | |
2047 | ||
2048 | ctx->mmio_start = ioremap_nocache(res_mmio->start, | |
2049 | (size_t)(resource_size(res_mmio))); | |
2050 | if (!ctx->mmio_start) { | |
2051 | dev_err(&pdev->dev, "Could not get ioremap\n"); | |
2052 | ret = -EACCES; | |
2053 | goto err; | |
2054 | } | |
5dab11d8 | 2055 | |
da864809 TI |
2056 | /* setup interrupt handler */ |
2057 | ret = request_irq(irq, display_pipe_interrupt_handler, 0, | |
2058 | pdev->name, ctx); | |
2059 | if (ret < 0) { | |
2060 | dev_err(&pdev->dev, "request_irq failed\n"); | |
2061 | goto err; | |
2062 | } | |
5dab11d8 | 2063 | |
da864809 TI |
2064 | ctx->irq = irq; |
2065 | ||
2066 | ret = snd_pcm_new(card, INTEL_HAD, PCM_INDEX, MAX_PB_STREAMS, | |
2067 | MAX_CAP_STREAMS, &pcm); | |
2068 | if (ret) | |
5dab11d8 JA |
2069 | goto err; |
2070 | ||
2071 | /* setup private data which can be retrieved when required */ | |
da864809 | 2072 | pcm->private_data = ctx; |
5dab11d8 JA |
2073 | pcm->private_free = snd_intelhad_pcm_free; |
2074 | pcm->info_flags = 0; | |
2075 | strncpy(pcm->name, card->shortname, strlen(card->shortname)); | |
da864809 | 2076 | /* setup the ops for playabck */ |
5dab11d8 JA |
2077 | snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, |
2078 | &snd_intelhad_playback_ops); | |
2079 | /* allocate dma pages for ALSA stream operations | |
2080 | * memory allocated is based on size, not max value | |
2081 | * thus using same argument for max & size | |
2082 | */ | |
da864809 | 2083 | snd_pcm_lib_preallocate_pages_for_all(pcm, |
5dab11d8 JA |
2084 | SNDRV_DMA_TYPE_DEV, NULL, |
2085 | HAD_MAX_BUFFER, HAD_MAX_BUFFER); | |
5dab11d8 | 2086 | |
5dab11d8 | 2087 | /* IEC958 controls */ |
da864809 TI |
2088 | ret = snd_ctl_add(card, snd_ctl_new1(&had_control_iec958_mask, ctx)); |
2089 | if (ret < 0) | |
5dab11d8 | 2090 | goto err; |
da864809 TI |
2091 | ret = snd_ctl_add(card, snd_ctl_new1(&had_control_iec958, ctx)); |
2092 | if (ret < 0) | |
5dab11d8 JA |
2093 | goto err; |
2094 | ||
2095 | init_channel_allocations(); | |
2096 | ||
2097 | /* Register channel map controls */ | |
da864809 TI |
2098 | ret = had_register_chmap_ctls(ctx, pcm); |
2099 | if (ret < 0) | |
5dab11d8 JA |
2100 | goto err; |
2101 | ||
da864809 TI |
2102 | ret = snd_card_register(card); |
2103 | if (ret) | |
36ec0d99 TI |
2104 | goto err; |
2105 | ||
da864809 TI |
2106 | spin_lock_irqsave(&pdata->lpe_audio_slock, flags); |
2107 | pdata->notify_audio_lpe = notify_audio_lpe; | |
2108 | if (pdata->notify_pending) { | |
5dab11d8 | 2109 | |
da864809 TI |
2110 | dev_dbg(&pdev->dev, "%s: handle pending notification\n", __func__); |
2111 | notify_audio_lpe(pdev); | |
2112 | pdata->notify_pending = false; | |
2113 | } | |
2114 | spin_unlock_irqrestore(&pdata->lpe_audio_slock, flags); | |
2115 | ||
2116 | pm_runtime_set_active(&pdev->dev); | |
2117 | pm_runtime_enable(&pdev->dev); | |
2118 | ||
2119 | schedule_work(&ctx->hdmi_audio_wq); | |
5dab11d8 | 2120 | |
79dda75a | 2121 | return 0; |
5647aec2 | 2122 | |
5dab11d8 JA |
2123 | err: |
2124 | snd_card_free(card); | |
da864809 | 2125 | return ret; |
5dab11d8 JA |
2126 | } |
2127 | ||
79dda75a | 2128 | /* |
da864809 | 2129 | * hdmi_lpe_audio_remove - stop bridge with i915 |
5dab11d8 | 2130 | * |
da864809 TI |
2131 | * This function is called when the platform device is destroyed. The sound |
2132 | * card should have been removed on hot plug event. | |
5dab11d8 | 2133 | */ |
da864809 | 2134 | static int hdmi_lpe_audio_remove(struct platform_device *pdev) |
5dab11d8 | 2135 | { |
da864809 | 2136 | struct snd_intelhad *ctx = platform_get_drvdata(pdev); |
5dab11d8 | 2137 | |
da864809 TI |
2138 | if (ctx->drv_status != HAD_DRV_DISCONNECTED) |
2139 | snd_intelhad_enable_audio_int(ctx, false); | |
2140 | snd_card_free(ctx->card); | |
5dab11d8 JA |
2141 | return 0; |
2142 | } | |
2143 | ||
da864809 TI |
2144 | static struct platform_driver hdmi_lpe_audio_driver = { |
2145 | .driver = { | |
2146 | .name = "hdmi-lpe-audio", | |
2147 | }, | |
2148 | .probe = hdmi_lpe_audio_probe, | |
2149 | .remove = hdmi_lpe_audio_remove, | |
2150 | .suspend = hdmi_lpe_audio_suspend, | |
2151 | .resume = hdmi_lpe_audio_resume | |
2152 | }; | |
2153 | ||
2154 | module_platform_driver(hdmi_lpe_audio_driver); | |
2155 | MODULE_ALIAS("platform:hdmi_lpe_audio"); | |
2156 | ||
5dab11d8 JA |
2157 | MODULE_AUTHOR("Sailaja Bandarupalli <sailaja.bandarupalli@intel.com>"); |
2158 | MODULE_AUTHOR("Ramesh Babu K V <ramesh.babu@intel.com>"); | |
2159 | MODULE_AUTHOR("Vaibhav Agarwal <vaibhav.agarwal@intel.com>"); | |
2160 | MODULE_AUTHOR("Jerome Anand <jerome.anand@intel.com>"); | |
2161 | MODULE_DESCRIPTION("Intel HDMI Audio driver"); | |
2162 | MODULE_LICENSE("GPL v2"); | |
2163 | MODULE_SUPPORTED_DEVICE("{Intel,Intel_HAD}"); |