Version:  2.0.40 2.2.26 2.4.37 2.6.39 3.0 3.1 3.2 3.3 3.4 3.5 3.6 3.7 3.8 3.9 3.10 3.11 3.12 3.13 3.14 3.15

Linux/sound/soc/ux500/ux500_msp_dai.c

  1 /*
  2  * Copyright (C) ST-Ericsson SA 2012
  3  *
  4  * Author: Ola Lilja <ola.o.lilja@stericsson.com>,
  5  *         Roger Nilsson <roger.xr.nilsson@stericsson.com>
  6  *         for ST-Ericsson.
  7  *
  8  * License terms:
  9  *
 10  * This program is free software; you can redistribute it and/or modify
 11  * it under the terms of the GNU General Public License version 2 as published
 12  * by the Free Software Foundation.
 13  */
 14 
 15 #include <linux/module.h>
 16 #include <linux/slab.h>
 17 #include <linux/bitops.h>
 18 #include <linux/platform_device.h>
 19 #include <linux/clk.h>
 20 #include <linux/of.h>
 21 #include <linux/regulator/consumer.h>
 22 #include <linux/mfd/dbx500-prcmu.h>
 23 #include <linux/platform_data/asoc-ux500-msp.h>
 24 
 25 #include <sound/soc.h>
 26 #include <sound/soc-dai.h>
 27 #include <sound/dmaengine_pcm.h>
 28 
 29 #include "ux500_msp_i2s.h"
 30 #include "ux500_msp_dai.h"
 31 #include "ux500_pcm.h"
 32 
 33 static int setup_pcm_multichan(struct snd_soc_dai *dai,
 34                         struct ux500_msp_config *msp_config)
 35 {
 36         struct ux500_msp_i2s_drvdata *drvdata = dev_get_drvdata(dai->dev);
 37         struct msp_multichannel_config *multi =
 38                                         &msp_config->multichannel_config;
 39 
 40         if (drvdata->slots > 1) {
 41                 msp_config->multichannel_configured = 1;
 42 
 43                 multi->tx_multichannel_enable = true;
 44                 multi->rx_multichannel_enable = true;
 45                 multi->rx_comparison_enable_mode = MSP_COMPARISON_DISABLED;
 46 
 47                 multi->tx_channel_0_enable = drvdata->tx_mask;
 48                 multi->tx_channel_1_enable = 0;
 49                 multi->tx_channel_2_enable = 0;
 50                 multi->tx_channel_3_enable = 0;
 51 
 52                 multi->rx_channel_0_enable = drvdata->rx_mask;
 53                 multi->rx_channel_1_enable = 0;
 54                 multi->rx_channel_2_enable = 0;
 55                 multi->rx_channel_3_enable = 0;
 56 
 57                 dev_dbg(dai->dev,
 58                         "%s: Multichannel enabled. Slots: %d, TX: %u, RX: %u\n",
 59                         __func__, drvdata->slots, multi->tx_channel_0_enable,
 60                         multi->rx_channel_0_enable);
 61         }
 62 
 63         return 0;
 64 }
 65 
 66 static int setup_frameper(struct snd_soc_dai *dai, unsigned int rate,
 67                         struct msp_protdesc *prot_desc)
 68 {
 69         struct ux500_msp_i2s_drvdata *drvdata = dev_get_drvdata(dai->dev);
 70 
 71         switch (drvdata->slots) {
 72         case 1:
 73                 switch (rate) {
 74                 case 8000:
 75                         prot_desc->frame_period =
 76                                 FRAME_PER_SINGLE_SLOT_8_KHZ;
 77                         break;
 78 
 79                 case 16000:
 80                         prot_desc->frame_period =
 81                                 FRAME_PER_SINGLE_SLOT_16_KHZ;
 82                         break;
 83 
 84                 case 44100:
 85                         prot_desc->frame_period =
 86                                 FRAME_PER_SINGLE_SLOT_44_1_KHZ;
 87                         break;
 88 
 89                 case 48000:
 90                         prot_desc->frame_period =
 91                                 FRAME_PER_SINGLE_SLOT_48_KHZ;
 92                         break;
 93 
 94                 default:
 95                         dev_err(dai->dev,
 96                                 "%s: Error: Unsupported sample-rate (freq = %d)!\n",
 97                                 __func__, rate);
 98                         return -EINVAL;
 99                 }
100                 break;
101 
102         case 2:
103                 prot_desc->frame_period = FRAME_PER_2_SLOTS;
104                 break;
105 
106         case 8:
107                 prot_desc->frame_period = FRAME_PER_8_SLOTS;
108                 break;
109 
110         case 16:
111                 prot_desc->frame_period = FRAME_PER_16_SLOTS;
112                 break;
113         default:
114                 dev_err(dai->dev,
115                         "%s: Error: Unsupported slot-count (slots = %d)!\n",
116                         __func__, drvdata->slots);
117                 return -EINVAL;
118         }
119 
120         prot_desc->clocks_per_frame =
121                         prot_desc->frame_period+1;
122 
123         dev_dbg(dai->dev, "%s: Clocks per frame: %u\n",
124                 __func__,
125                 prot_desc->clocks_per_frame);
126 
127         return 0;
128 }
129 
130 static int setup_pcm_framing(struct snd_soc_dai *dai, unsigned int rate,
131                         struct msp_protdesc *prot_desc)
132 {
133         struct ux500_msp_i2s_drvdata *drvdata = dev_get_drvdata(dai->dev);
134 
135         u32 frame_length = MSP_FRAME_LEN_1;
136         prot_desc->frame_width = 0;
137 
138         switch (drvdata->slots) {
139         case 1:
140                 frame_length = MSP_FRAME_LEN_1;
141                 break;
142 
143         case 2:
144                 frame_length = MSP_FRAME_LEN_2;
145                 break;
146 
147         case 8:
148                 frame_length = MSP_FRAME_LEN_8;
149                 break;
150 
151         case 16:
152                 frame_length = MSP_FRAME_LEN_16;
153                 break;
154         default:
155                 dev_err(dai->dev,
156                         "%s: Error: Unsupported slot-count (slots = %d)!\n",
157                         __func__, drvdata->slots);
158                 return -EINVAL;
159         }
160 
161         prot_desc->tx_frame_len_1 = frame_length;
162         prot_desc->rx_frame_len_1 = frame_length;
163         prot_desc->tx_frame_len_2 = frame_length;
164         prot_desc->rx_frame_len_2 = frame_length;
165 
166         prot_desc->tx_elem_len_1 = MSP_ELEM_LEN_16;
167         prot_desc->rx_elem_len_1 = MSP_ELEM_LEN_16;
168         prot_desc->tx_elem_len_2 = MSP_ELEM_LEN_16;
169         prot_desc->rx_elem_len_2 = MSP_ELEM_LEN_16;
170 
171         return setup_frameper(dai, rate, prot_desc);
172 }
173 
174 static int setup_clocking(struct snd_soc_dai *dai,
175                         unsigned int fmt,
176                         struct ux500_msp_config *msp_config)
177 {
178         switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
179         case SND_SOC_DAIFMT_NB_NF:
180                 break;
181 
182         case SND_SOC_DAIFMT_NB_IF:
183                 msp_config->tx_fsync_pol ^= 1 << TFSPOL_SHIFT;
184                 msp_config->rx_fsync_pol ^= 1 << RFSPOL_SHIFT;
185 
186                 break;
187 
188         default:
189                 dev_err(dai->dev,
190                         "%s: Error: Unsopported inversion (fmt = 0x%x)!\n",
191                         __func__, fmt);
192 
193                 return -EINVAL;
194         }
195 
196         switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
197         case SND_SOC_DAIFMT_CBM_CFM:
198                 dev_dbg(dai->dev, "%s: Codec is master.\n", __func__);
199 
200                 msp_config->iodelay = 0x20;
201                 msp_config->rx_fsync_sel = 0;
202                 msp_config->tx_fsync_sel = 1 << TFSSEL_SHIFT;
203                 msp_config->tx_clk_sel = 0;
204                 msp_config->rx_clk_sel = 0;
205                 msp_config->srg_clk_sel = 0x2 << SCKSEL_SHIFT;
206 
207                 break;
208 
209         case SND_SOC_DAIFMT_CBS_CFS:
210                 dev_dbg(dai->dev, "%s: Codec is slave.\n", __func__);
211 
212                 msp_config->tx_clk_sel = TX_CLK_SEL_SRG;
213                 msp_config->tx_fsync_sel = TX_SYNC_SRG_PROG;
214                 msp_config->rx_clk_sel = RX_CLK_SEL_SRG;
215                 msp_config->rx_fsync_sel = RX_SYNC_SRG;
216                 msp_config->srg_clk_sel = 1 << SCKSEL_SHIFT;
217 
218                 break;
219 
220         default:
221                 dev_err(dai->dev, "%s: Error: Unsopported master (fmt = 0x%x)!\n",
222                         __func__, fmt);
223 
224                 return -EINVAL;
225         }
226 
227         return 0;
228 }
229 
230 static int setup_pcm_protdesc(struct snd_soc_dai *dai,
231                                 unsigned int fmt,
232                                 struct msp_protdesc *prot_desc)
233 {
234         prot_desc->rx_phase_mode = MSP_SINGLE_PHASE;
235         prot_desc->tx_phase_mode = MSP_SINGLE_PHASE;
236         prot_desc->rx_phase2_start_mode = MSP_PHASE2_START_MODE_IMEDIATE;
237         prot_desc->tx_phase2_start_mode = MSP_PHASE2_START_MODE_IMEDIATE;
238         prot_desc->rx_byte_order = MSP_BTF_MS_BIT_FIRST;
239         prot_desc->tx_byte_order = MSP_BTF_MS_BIT_FIRST;
240         prot_desc->tx_fsync_pol = MSP_FSYNC_POL(MSP_FSYNC_POL_ACT_HI);
241         prot_desc->rx_fsync_pol = MSP_FSYNC_POL_ACT_HI << RFSPOL_SHIFT;
242 
243         if ((fmt & SND_SOC_DAIFMT_FORMAT_MASK) == SND_SOC_DAIFMT_DSP_A) {
244                 dev_dbg(dai->dev, "%s: DSP_A.\n", __func__);
245                 prot_desc->rx_clk_pol = MSP_RISING_EDGE;
246                 prot_desc->tx_clk_pol = MSP_FALLING_EDGE;
247 
248                 prot_desc->rx_data_delay = MSP_DELAY_1;
249                 prot_desc->tx_data_delay = MSP_DELAY_1;
250         } else {
251                 dev_dbg(dai->dev, "%s: DSP_B.\n", __func__);
252                 prot_desc->rx_clk_pol = MSP_FALLING_EDGE;
253                 prot_desc->tx_clk_pol = MSP_RISING_EDGE;
254 
255                 prot_desc->rx_data_delay = MSP_DELAY_0;
256                 prot_desc->tx_data_delay = MSP_DELAY_0;
257         }
258 
259         prot_desc->rx_half_word_swap = MSP_SWAP_NONE;
260         prot_desc->tx_half_word_swap = MSP_SWAP_NONE;
261         prot_desc->compression_mode = MSP_COMPRESS_MODE_LINEAR;
262         prot_desc->expansion_mode = MSP_EXPAND_MODE_LINEAR;
263         prot_desc->frame_sync_ignore = MSP_FSYNC_IGNORE;
264 
265         return 0;
266 }
267 
268 static int setup_i2s_protdesc(struct msp_protdesc *prot_desc)
269 {
270         prot_desc->rx_phase_mode = MSP_DUAL_PHASE;
271         prot_desc->tx_phase_mode = MSP_DUAL_PHASE;
272         prot_desc->rx_phase2_start_mode = MSP_PHASE2_START_MODE_FSYNC;
273         prot_desc->tx_phase2_start_mode = MSP_PHASE2_START_MODE_FSYNC;
274         prot_desc->rx_byte_order = MSP_BTF_MS_BIT_FIRST;
275         prot_desc->tx_byte_order = MSP_BTF_MS_BIT_FIRST;
276         prot_desc->tx_fsync_pol = MSP_FSYNC_POL(MSP_FSYNC_POL_ACT_LO);
277         prot_desc->rx_fsync_pol = MSP_FSYNC_POL_ACT_LO << RFSPOL_SHIFT;
278 
279         prot_desc->rx_frame_len_1 = MSP_FRAME_LEN_1;
280         prot_desc->rx_frame_len_2 = MSP_FRAME_LEN_1;
281         prot_desc->tx_frame_len_1 = MSP_FRAME_LEN_1;
282         prot_desc->tx_frame_len_2 = MSP_FRAME_LEN_1;
283         prot_desc->rx_elem_len_1 = MSP_ELEM_LEN_16;
284         prot_desc->rx_elem_len_2 = MSP_ELEM_LEN_16;
285         prot_desc->tx_elem_len_1 = MSP_ELEM_LEN_16;
286         prot_desc->tx_elem_len_2 = MSP_ELEM_LEN_16;
287 
288         prot_desc->rx_clk_pol = MSP_RISING_EDGE;
289         prot_desc->tx_clk_pol = MSP_FALLING_EDGE;
290 
291         prot_desc->rx_data_delay = MSP_DELAY_0;
292         prot_desc->tx_data_delay = MSP_DELAY_0;
293 
294         prot_desc->tx_half_word_swap = MSP_SWAP_NONE;
295         prot_desc->rx_half_word_swap = MSP_SWAP_NONE;
296         prot_desc->compression_mode = MSP_COMPRESS_MODE_LINEAR;
297         prot_desc->expansion_mode = MSP_EXPAND_MODE_LINEAR;
298         prot_desc->frame_sync_ignore = MSP_FSYNC_IGNORE;
299 
300         return 0;
301 }
302 
303 static int setup_msp_config(struct snd_pcm_substream *substream,
304                         struct snd_soc_dai *dai,
305                         struct ux500_msp_config *msp_config)
306 {
307         struct ux500_msp_i2s_drvdata *drvdata = dev_get_drvdata(dai->dev);
308         struct msp_protdesc *prot_desc = &msp_config->protdesc;
309         struct snd_pcm_runtime *runtime = substream->runtime;
310         unsigned int fmt = drvdata->fmt;
311         int ret;
312 
313         memset(msp_config, 0, sizeof(*msp_config));
314 
315         msp_config->f_inputclk = drvdata->master_clk;
316 
317         msp_config->tx_fifo_config = TX_FIFO_ENABLE;
318         msp_config->rx_fifo_config = RX_FIFO_ENABLE;
319         msp_config->def_elem_len = 1;
320         msp_config->direction = substream->stream == SNDRV_PCM_STREAM_PLAYBACK ?
321                                 MSP_DIR_TX : MSP_DIR_RX;
322         msp_config->data_size = MSP_DATA_BITS_32;
323         msp_config->frame_freq = runtime->rate;
324 
325         dev_dbg(dai->dev, "%s: f_inputclk = %u, frame_freq = %u.\n",
326                __func__, msp_config->f_inputclk, msp_config->frame_freq);
327         /* To avoid division by zero */
328         prot_desc->clocks_per_frame = 1;
329 
330         dev_dbg(dai->dev, "%s: rate: %u, channels: %d.\n", __func__,
331                 runtime->rate, runtime->channels);
332         switch (fmt &
333                 (SND_SOC_DAIFMT_FORMAT_MASK | SND_SOC_DAIFMT_MASTER_MASK)) {
334         case SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_CBS_CFS:
335                 dev_dbg(dai->dev, "%s: SND_SOC_DAIFMT_I2S.\n", __func__);
336 
337                 msp_config->default_protdesc = 1;
338                 msp_config->protocol = MSP_I2S_PROTOCOL;
339                 break;
340 
341         case SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_CBM_CFM:
342                 dev_dbg(dai->dev, "%s: SND_SOC_DAIFMT_I2S.\n", __func__);
343 
344                 msp_config->data_size = MSP_DATA_BITS_16;
345                 msp_config->protocol = MSP_I2S_PROTOCOL;
346 
347                 ret = setup_i2s_protdesc(prot_desc);
348                 if (ret < 0)
349                         return ret;
350 
351                 break;
352 
353         case SND_SOC_DAIFMT_DSP_A | SND_SOC_DAIFMT_CBS_CFS:
354         case SND_SOC_DAIFMT_DSP_A | SND_SOC_DAIFMT_CBM_CFM:
355         case SND_SOC_DAIFMT_DSP_B | SND_SOC_DAIFMT_CBS_CFS:
356         case SND_SOC_DAIFMT_DSP_B | SND_SOC_DAIFMT_CBM_CFM:
357                 dev_dbg(dai->dev, "%s: PCM format.\n", __func__);
358 
359                 msp_config->data_size = MSP_DATA_BITS_16;
360                 msp_config->protocol = MSP_PCM_PROTOCOL;
361 
362                 ret = setup_pcm_protdesc(dai, fmt, prot_desc);
363                 if (ret < 0)
364                         return ret;
365 
366                 ret = setup_pcm_multichan(dai, msp_config);
367                 if (ret < 0)
368                         return ret;
369 
370                 ret = setup_pcm_framing(dai, runtime->rate, prot_desc);
371                 if (ret < 0)
372                         return ret;
373 
374                 break;
375 
376         default:
377                 dev_err(dai->dev, "%s: Error: Unsopported format (%d)!\n",
378                         __func__, fmt);
379                 return -EINVAL;
380         }
381 
382         return setup_clocking(dai, fmt, msp_config);
383 }
384 
385 static int ux500_msp_dai_startup(struct snd_pcm_substream *substream,
386                                 struct snd_soc_dai *dai)
387 {
388         int ret = 0;
389         struct ux500_msp_i2s_drvdata *drvdata = dev_get_drvdata(dai->dev);
390 
391         dev_dbg(dai->dev, "%s: MSP %d (%s): Enter.\n", __func__, dai->id,
392                 snd_pcm_stream_str(substream));
393 
394         /* Enable regulator */
395         ret = regulator_enable(drvdata->reg_vape);
396         if (ret != 0) {
397                 dev_err(drvdata->msp->dev,
398                         "%s: Failed to enable regulator!\n", __func__);
399                 return ret;
400         }
401 
402         /* Prepare and enable clocks */
403         dev_dbg(dai->dev, "%s: Enabling MSP-clocks.\n", __func__);
404         ret = clk_prepare_enable(drvdata->pclk);
405         if (ret) {
406                 dev_err(drvdata->msp->dev,
407                         "%s: Failed to prepare/enable pclk!\n", __func__);
408                 goto err_pclk;
409         }
410 
411         ret = clk_prepare_enable(drvdata->clk);
412         if (ret) {
413                 dev_err(drvdata->msp->dev,
414                         "%s: Failed to prepare/enable clk!\n", __func__);
415                 goto err_clk;
416         }
417 
418         return ret;
419 err_clk:
420         clk_disable_unprepare(drvdata->pclk);
421 err_pclk:
422         regulator_disable(drvdata->reg_vape);
423         return ret;
424 }
425 
426 static void ux500_msp_dai_shutdown(struct snd_pcm_substream *substream,
427                                 struct snd_soc_dai *dai)
428 {
429         int ret;
430         struct ux500_msp_i2s_drvdata *drvdata = dev_get_drvdata(dai->dev);
431         bool is_playback = (substream->stream == SNDRV_PCM_STREAM_PLAYBACK);
432 
433         dev_dbg(dai->dev, "%s: MSP %d (%s): Enter.\n", __func__, dai->id,
434                 snd_pcm_stream_str(substream));
435 
436         if (drvdata->vape_opp_constraint == 1) {
437                 prcmu_qos_update_requirement(PRCMU_QOS_APE_OPP,
438                                         "ux500_msp_i2s", 50);
439                 drvdata->vape_opp_constraint = 0;
440         }
441 
442         if (ux500_msp_i2s_close(drvdata->msp,
443                                 is_playback ? MSP_DIR_TX : MSP_DIR_RX)) {
444                 dev_err(dai->dev,
445                         "%s: Error: MSP %d (%s): Unable to close i2s.\n",
446                         __func__, dai->id, snd_pcm_stream_str(substream));
447         }
448 
449         /* Disable and unprepare clocks */
450         clk_disable_unprepare(drvdata->clk);
451         clk_disable_unprepare(drvdata->pclk);
452 
453         /* Disable regulator */
454         ret = regulator_disable(drvdata->reg_vape);
455         if (ret < 0)
456                 dev_err(dai->dev,
457                         "%s: ERROR: Failed to disable regulator (%d)!\n",
458                         __func__, ret);
459 }
460 
461 static int ux500_msp_dai_prepare(struct snd_pcm_substream *substream,
462                                 struct snd_soc_dai *dai)
463 {
464         int ret = 0;
465         struct ux500_msp_i2s_drvdata *drvdata = dev_get_drvdata(dai->dev);
466         struct snd_pcm_runtime *runtime = substream->runtime;
467         struct ux500_msp_config msp_config;
468 
469         dev_dbg(dai->dev, "%s: MSP %d (%s): Enter (rate = %d).\n", __func__,
470                 dai->id, snd_pcm_stream_str(substream), runtime->rate);
471 
472         setup_msp_config(substream, dai, &msp_config);
473 
474         ret = ux500_msp_i2s_open(drvdata->msp, &msp_config);
475         if (ret < 0) {
476                 dev_err(dai->dev, "%s: Error: msp_setup failed (ret = %d)!\n",
477                         __func__, ret);
478                 return ret;
479         }
480 
481         /* Set OPP-level */
482         if ((drvdata->fmt & SND_SOC_DAIFMT_MASTER_MASK) &&
483                 (drvdata->msp->f_bitclk > 19200000)) {
484                 /* If the bit-clock is higher than 19.2MHz, Vape should be
485                  * run in 100% OPP. Only when bit-clock is used (MSP master) */
486                 prcmu_qos_update_requirement(PRCMU_QOS_APE_OPP,
487                                         "ux500-msp-i2s", 100);
488                 drvdata->vape_opp_constraint = 1;
489         } else {
490                 prcmu_qos_update_requirement(PRCMU_QOS_APE_OPP,
491                                         "ux500-msp-i2s", 50);
492                 drvdata->vape_opp_constraint = 0;
493         }
494 
495         return ret;
496 }
497 
498 static int ux500_msp_dai_hw_params(struct snd_pcm_substream *substream,
499                                 struct snd_pcm_hw_params *params,
500                                 struct snd_soc_dai *dai)
501 {
502         unsigned int mask, slots_active;
503         struct snd_pcm_runtime *runtime = substream->runtime;
504         struct ux500_msp_i2s_drvdata *drvdata = dev_get_drvdata(dai->dev);
505 
506         dev_dbg(dai->dev, "%s: MSP %d (%s): Enter.\n",
507                         __func__, dai->id, snd_pcm_stream_str(substream));
508 
509         switch (drvdata->fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
510         case SND_SOC_DAIFMT_I2S:
511                 snd_pcm_hw_constraint_minmax(runtime,
512                                 SNDRV_PCM_HW_PARAM_CHANNELS,
513                                 1, 2);
514                 break;
515 
516         case SND_SOC_DAIFMT_DSP_B:
517         case SND_SOC_DAIFMT_DSP_A:
518                 mask = substream->stream == SNDRV_PCM_STREAM_PLAYBACK ?
519                         drvdata->tx_mask :
520                         drvdata->rx_mask;
521 
522                 slots_active = hweight32(mask);
523                 dev_dbg(dai->dev, "TDM-slots active: %d", slots_active);
524 
525                 snd_pcm_hw_constraint_minmax(runtime,
526                                 SNDRV_PCM_HW_PARAM_CHANNELS,
527                                 slots_active, slots_active);
528                 break;
529 
530         default:
531                 dev_err(dai->dev,
532                         "%s: Error: Unsupported protocol (fmt = 0x%x)!\n",
533                         __func__, drvdata->fmt);
534                 return -EINVAL;
535         }
536 
537         return 0;
538 }
539 
540 static int ux500_msp_dai_set_dai_fmt(struct snd_soc_dai *dai,
541                                 unsigned int fmt)
542 {
543         struct ux500_msp_i2s_drvdata *drvdata = dev_get_drvdata(dai->dev);
544 
545         dev_dbg(dai->dev, "%s: MSP %d: Enter.\n", __func__, dai->id);
546 
547         switch (fmt & (SND_SOC_DAIFMT_FORMAT_MASK |
548                 SND_SOC_DAIFMT_MASTER_MASK)) {
549         case SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_CBS_CFS:
550         case SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_CBM_CFM:
551         case SND_SOC_DAIFMT_DSP_B | SND_SOC_DAIFMT_CBS_CFS:
552         case SND_SOC_DAIFMT_DSP_B | SND_SOC_DAIFMT_CBM_CFM:
553         case SND_SOC_DAIFMT_DSP_A | SND_SOC_DAIFMT_CBS_CFS:
554         case SND_SOC_DAIFMT_DSP_A | SND_SOC_DAIFMT_CBM_CFM:
555                 break;
556 
557         default:
558                 dev_err(dai->dev,
559                         "%s: Error: Unsupported protocol/master (fmt = 0x%x)!\n",
560                         __func__, drvdata->fmt);
561                 return -EINVAL;
562         }
563 
564         switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
565         case SND_SOC_DAIFMT_NB_NF:
566         case SND_SOC_DAIFMT_NB_IF:
567         case SND_SOC_DAIFMT_IB_IF:
568                 break;
569 
570         default:
571                 dev_err(dai->dev,
572                         "%s: Error: Unsupported inversion (fmt = 0x%x)!\n",
573                         __func__, drvdata->fmt);
574                 return -EINVAL;
575         }
576 
577         drvdata->fmt = fmt;
578         return 0;
579 }
580 
581 static int ux500_msp_dai_set_tdm_slot(struct snd_soc_dai *dai,
582                                 unsigned int tx_mask,
583                                 unsigned int rx_mask,
584                                 int slots, int slot_width)
585 {
586         struct ux500_msp_i2s_drvdata *drvdata = dev_get_drvdata(dai->dev);
587         unsigned int cap;
588 
589         switch (slots) {
590         case 1:
591                 cap = 0x01;
592                 break;
593         case 2:
594                 cap = 0x03;
595                 break;
596         case 8:
597                 cap = 0xFF;
598                 break;
599         case 16:
600                 cap = 0xFFFF;
601                 break;
602         default:
603                 dev_err(dai->dev, "%s: Error: Unsupported slot-count (%d)!\n",
604                         __func__, slots);
605                 return -EINVAL;
606         }
607         drvdata->slots = slots;
608 
609         if (!(slot_width == 16)) {
610                 dev_err(dai->dev, "%s: Error: Unsupported slot-width (%d)!\n",
611                         __func__, slot_width);
612                 return -EINVAL;
613         }
614         drvdata->slot_width = slot_width;
615 
616         drvdata->tx_mask = tx_mask & cap;
617         drvdata->rx_mask = rx_mask & cap;
618 
619         return 0;
620 }
621 
622 static int ux500_msp_dai_set_dai_sysclk(struct snd_soc_dai *dai,
623                                         int clk_id, unsigned int freq, int dir)
624 {
625         struct ux500_msp_i2s_drvdata *drvdata = dev_get_drvdata(dai->dev);
626 
627         dev_dbg(dai->dev, "%s: MSP %d: Enter. clk-id: %d, freq: %u.\n",
628                 __func__, dai->id, clk_id, freq);
629 
630         switch (clk_id) {
631         case UX500_MSP_MASTER_CLOCK:
632                 drvdata->master_clk = freq;
633                 break;
634 
635         default:
636                 dev_err(dai->dev, "%s: MSP %d: Invalid clk-id (%d)!\n",
637                         __func__, dai->id, clk_id);
638                 return -EINVAL;
639         }
640 
641         return 0;
642 }
643 
644 static int ux500_msp_dai_trigger(struct snd_pcm_substream *substream,
645                                 int cmd, struct snd_soc_dai *dai)
646 {
647         int ret = 0;
648         struct ux500_msp_i2s_drvdata *drvdata = dev_get_drvdata(dai->dev);
649 
650         dev_dbg(dai->dev, "%s: MSP %d (%s): Enter (msp->id = %d, cmd = %d).\n",
651                 __func__, dai->id, snd_pcm_stream_str(substream),
652                 (int)drvdata->msp->id, cmd);
653 
654         ret = ux500_msp_i2s_trigger(drvdata->msp, cmd, substream->stream);
655 
656         return ret;
657 }
658 
659 static int ux500_msp_dai_of_probe(struct snd_soc_dai *dai)
660 {
661         struct ux500_msp_i2s_drvdata *drvdata = dev_get_drvdata(dai->dev);
662         struct snd_dmaengine_dai_dma_data *playback_dma_data;
663         struct snd_dmaengine_dai_dma_data *capture_dma_data;
664 
665         playback_dma_data = devm_kzalloc(dai->dev,
666                                          sizeof(*playback_dma_data),
667                                          GFP_KERNEL);
668         if (!playback_dma_data)
669                 return -ENOMEM;
670 
671         capture_dma_data = devm_kzalloc(dai->dev,
672                                         sizeof(*capture_dma_data),
673                                         GFP_KERNEL);
674         if (!capture_dma_data)
675                 return -ENOMEM;
676 
677         playback_dma_data->addr = drvdata->msp->playback_dma_data.tx_rx_addr;
678         capture_dma_data->addr = drvdata->msp->capture_dma_data.tx_rx_addr;
679 
680         playback_dma_data->maxburst = 4;
681         capture_dma_data->maxburst = 4;
682 
683         snd_soc_dai_init_dma_data(dai, playback_dma_data, capture_dma_data);
684 
685         return 0;
686 }
687 
688 static int ux500_msp_dai_probe(struct snd_soc_dai *dai)
689 {
690         struct ux500_msp_i2s_drvdata *drvdata = dev_get_drvdata(dai->dev);
691         struct msp_i2s_platform_data *pdata = dai->dev->platform_data;
692         int ret;
693 
694         if (!pdata) {
695                 ret = ux500_msp_dai_of_probe(dai);
696                 return ret;
697         }
698 
699         drvdata->msp->playback_dma_data.data_size = drvdata->slot_width;
700         drvdata->msp->capture_dma_data.data_size = drvdata->slot_width;
701 
702         snd_soc_dai_init_dma_data(dai,
703                                   &drvdata->msp->playback_dma_data,
704                                   &drvdata->msp->capture_dma_data);
705         return 0;
706 }
707 
708 static struct snd_soc_dai_ops ux500_msp_dai_ops[] = {
709         {
710                 .set_sysclk = ux500_msp_dai_set_dai_sysclk,
711                 .set_fmt = ux500_msp_dai_set_dai_fmt,
712                 .set_tdm_slot = ux500_msp_dai_set_tdm_slot,
713                 .startup = ux500_msp_dai_startup,
714                 .shutdown = ux500_msp_dai_shutdown,
715                 .prepare = ux500_msp_dai_prepare,
716                 .trigger = ux500_msp_dai_trigger,
717                 .hw_params = ux500_msp_dai_hw_params,
718         }
719 };
720 
721 static struct snd_soc_dai_driver ux500_msp_dai_drv = {
722         .probe                 = ux500_msp_dai_probe,
723         .suspend               = NULL,
724         .resume                = NULL,
725         .playback.channels_min = UX500_MSP_MIN_CHANNELS,
726         .playback.channels_max = UX500_MSP_MAX_CHANNELS,
727         .playback.rates        = UX500_I2S_RATES,
728         .playback.formats      = UX500_I2S_FORMATS,
729         .capture.channels_min  = UX500_MSP_MIN_CHANNELS,
730         .capture.channels_max  = UX500_MSP_MAX_CHANNELS,
731         .capture.rates         = UX500_I2S_RATES,
732         .capture.formats       = UX500_I2S_FORMATS,
733         .ops                   = ux500_msp_dai_ops,
734 };
735 
736 static const struct snd_soc_component_driver ux500_msp_component = {
737         .name           = "ux500-msp",
738 };
739 
740 
741 static int ux500_msp_drv_probe(struct platform_device *pdev)
742 {
743         struct ux500_msp_i2s_drvdata *drvdata;
744         struct msp_i2s_platform_data *pdata = pdev->dev.platform_data;
745         struct device_node *np = pdev->dev.of_node;
746         int ret = 0;
747 
748         if (!pdata && !np) {
749                 dev_err(&pdev->dev, "No platform data or Device Tree found\n");
750                 return -ENODEV;
751         }
752 
753         drvdata = devm_kzalloc(&pdev->dev,
754                                 sizeof(struct ux500_msp_i2s_drvdata),
755                                 GFP_KERNEL);
756         if (!drvdata)
757                 return -ENOMEM;
758 
759         drvdata->fmt = 0;
760         drvdata->slots = 1;
761         drvdata->tx_mask = 0x01;
762         drvdata->rx_mask = 0x01;
763         drvdata->slot_width = 16;
764         drvdata->master_clk = MSP_INPUT_FREQ_APB;
765 
766         drvdata->reg_vape = devm_regulator_get(&pdev->dev, "v-ape");
767         if (IS_ERR(drvdata->reg_vape)) {
768                 ret = (int)PTR_ERR(drvdata->reg_vape);
769                 dev_err(&pdev->dev,
770                         "%s: ERROR: Failed to get Vape supply (%d)!\n",
771                         __func__, ret);
772                 return ret;
773         }
774         prcmu_qos_add_requirement(PRCMU_QOS_APE_OPP, (char *)pdev->name, 50);
775 
776         drvdata->pclk = clk_get(&pdev->dev, "apb_pclk");
777         if (IS_ERR(drvdata->pclk)) {
778                 ret = (int)PTR_ERR(drvdata->pclk);
779                 dev_err(&pdev->dev, "%s: ERROR: clk_get of pclk failed (%d)!\n",
780                         __func__, ret);
781                 goto err_pclk;
782         }
783 
784         drvdata->clk = clk_get(&pdev->dev, NULL);
785         if (IS_ERR(drvdata->clk)) {
786                 ret = (int)PTR_ERR(drvdata->clk);
787                 dev_err(&pdev->dev, "%s: ERROR: clk_get failed (%d)!\n",
788                         __func__, ret);
789                 goto err_clk;
790         }
791 
792         ret = ux500_msp_i2s_init_msp(pdev, &drvdata->msp,
793                                 pdev->dev.platform_data);
794         if (!drvdata->msp) {
795                 dev_err(&pdev->dev,
796                         "%s: ERROR: Failed to init MSP-struct (%d)!",
797                         __func__, ret);
798                 goto err_init_msp;
799         }
800         dev_set_drvdata(&pdev->dev, drvdata);
801 
802         ret = snd_soc_register_component(&pdev->dev, &ux500_msp_component,
803                                          &ux500_msp_dai_drv, 1);
804         if (ret < 0) {
805                 dev_err(&pdev->dev, "Error: %s: Failed to register MSP%d!\n",
806                         __func__, drvdata->msp->id);
807                 goto err_init_msp;
808         }
809 
810         ret = ux500_pcm_register_platform(pdev);
811         if (ret < 0) {
812                 dev_err(&pdev->dev,
813                         "Error: %s: Failed to register PCM platform device!\n",
814                         __func__);
815                 goto err_reg_plat;
816         }
817 
818         return 0;
819 
820 err_reg_plat:
821         snd_soc_unregister_component(&pdev->dev);
822 err_init_msp:
823         clk_put(drvdata->clk);
824 err_clk:
825         clk_put(drvdata->pclk);
826 err_pclk:
827         devm_regulator_put(drvdata->reg_vape);
828 
829         return ret;
830 }
831 
832 static int ux500_msp_drv_remove(struct platform_device *pdev)
833 {
834         struct ux500_msp_i2s_drvdata *drvdata = dev_get_drvdata(&pdev->dev);
835 
836         ux500_pcm_unregister_platform(pdev);
837 
838         snd_soc_unregister_component(&pdev->dev);
839 
840         devm_regulator_put(drvdata->reg_vape);
841         prcmu_qos_remove_requirement(PRCMU_QOS_APE_OPP, "ux500_msp_i2s");
842 
843         clk_put(drvdata->clk);
844         clk_put(drvdata->pclk);
845 
846         ux500_msp_i2s_cleanup_msp(pdev, drvdata->msp);
847 
848         return 0;
849 }
850 
851 static const struct of_device_id ux500_msp_i2s_match[] = {
852         { .compatible = "stericsson,ux500-msp-i2s", },
853         {},
854 };
855 
856 static struct platform_driver msp_i2s_driver = {
857         .driver = {
858                 .name = "ux500-msp-i2s",
859                 .owner = THIS_MODULE,
860                 .of_match_table = ux500_msp_i2s_match,
861         },
862         .probe = ux500_msp_drv_probe,
863         .remove = ux500_msp_drv_remove,
864 };
865 module_platform_driver(msp_i2s_driver);
866 
867 MODULE_LICENSE("GPL v2");
868 

This page was automatically generated by LXR 0.3.1 (source).  •  Linux is a registered trademark of Linus Torvalds  •  Contact us