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Linux/sound/soc/intel/haswell.c

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  1 /*
  2  * Intel Haswell Lynxpoint SST Audio
  3  *
  4  * Copyright (C) 2013, Intel Corporation. All rights reserved.
  5  *
  6  * This program is free software; you can redistribute it and/or
  7  * modify it under the terms of the GNU General Public License version
  8  * 2 as published by the Free Software Foundation.
  9  *
 10  * This program is distributed in the hope that it will be useful,
 11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
 12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 13  * GNU General Public License for more details.
 14  *
 15  */
 16 
 17 #include <linux/module.h>
 18 #include <linux/platform_device.h>
 19 #include <sound/core.h>
 20 #include <sound/pcm.h>
 21 #include <sound/soc.h>
 22 #include <sound/pcm_params.h>
 23 
 24 #include "sst-dsp.h"
 25 #include "sst-haswell-ipc.h"
 26 
 27 #include "../codecs/rt5640.h"
 28 
 29 /* Haswell ULT platforms have a Headphone and Mic jack */
 30 static const struct snd_soc_dapm_widget haswell_widgets[] = {
 31         SND_SOC_DAPM_HP("Headphones", NULL),
 32         SND_SOC_DAPM_MIC("Mic", NULL),
 33 };
 34 
 35 static const struct snd_soc_dapm_route haswell_rt5640_map[] = {
 36 
 37         {"Headphones", NULL, "HPOR"},
 38         {"Headphones", NULL, "HPOL"},
 39         {"IN2P", NULL, "Mic"},
 40 
 41         /* CODEC BE connections */
 42         {"SSP0 CODEC IN", NULL, "AIF1 Capture"},
 43         {"AIF1 Playback", NULL, "SSP0 CODEC OUT"},
 44 };
 45 
 46 static int haswell_ssp0_fixup(struct snd_soc_pcm_runtime *rtd,
 47                         struct snd_pcm_hw_params *params)
 48 {
 49         struct snd_interval *rate = hw_param_interval(params,
 50                         SNDRV_PCM_HW_PARAM_RATE);
 51         struct snd_interval *channels = hw_param_interval(params,
 52                                                 SNDRV_PCM_HW_PARAM_CHANNELS);
 53 
 54         /* The ADSP will covert the FE rate to 48k, stereo */
 55         rate->min = rate->max = 48000;
 56         channels->min = channels->max = 2;
 57 
 58         /* set SSP0 to 16 bit */
 59         snd_mask_set(&params->masks[SNDRV_PCM_HW_PARAM_FORMAT -
 60                                     SNDRV_PCM_HW_PARAM_FIRST_MASK],
 61                                     SNDRV_PCM_FORMAT_S16_LE);
 62         return 0;
 63 }
 64 
 65 static int haswell_rt5640_hw_params(struct snd_pcm_substream *substream,
 66         struct snd_pcm_hw_params *params)
 67 {
 68         struct snd_soc_pcm_runtime *rtd = substream->private_data;
 69         struct snd_soc_dai *codec_dai = rtd->codec_dai;
 70         int ret;
 71 
 72         ret = snd_soc_dai_set_sysclk(codec_dai, RT5640_SCLK_S_MCLK, 12288000,
 73                 SND_SOC_CLOCK_IN);
 74 
 75         if (ret < 0) {
 76                 dev_err(rtd->dev, "can't set codec sysclk configuration\n");
 77                 return ret;
 78         }
 79 
 80         /* set correct codec filter for DAI format and clock config */
 81         snd_soc_update_bits(rtd->codec, 0x83, 0xffff, 0x8000);
 82 
 83         return ret;
 84 }
 85 
 86 static struct snd_soc_ops haswell_rt5640_ops = {
 87         .hw_params = haswell_rt5640_hw_params,
 88 };
 89 
 90 static int haswell_rtd_init(struct snd_soc_pcm_runtime *rtd)
 91 {
 92         struct sst_pdata *pdata = dev_get_platdata(rtd->platform->dev);
 93         struct sst_hsw *haswell = pdata->dsp;
 94         int ret;
 95 
 96         /* Set ADSP SSP port settings */
 97         ret = sst_hsw_device_set_config(haswell, SST_HSW_DEVICE_SSP_0,
 98                 SST_HSW_DEVICE_MCLK_FREQ_24_MHZ,
 99                 SST_HSW_DEVICE_CLOCK_MASTER, 9);
100         if (ret < 0) {
101                 dev_err(rtd->dev, "failed to set device config\n");
102                 return ret;
103         }
104 
105         return 0;
106 }
107 
108 static struct snd_soc_dai_link haswell_rt5640_dais[] = {
109         /* Front End DAI links */
110         {
111                 .name = "System",
112                 .stream_name = "System Playback/Capture",
113                 .cpu_dai_name = "System Pin",
114                 .platform_name = "haswell-pcm-audio",
115                 .dynamic = 1,
116                 .codec_name = "snd-soc-dummy",
117                 .codec_dai_name = "snd-soc-dummy-dai",
118                 .init = haswell_rtd_init,
119                 .trigger = {SND_SOC_DPCM_TRIGGER_POST, SND_SOC_DPCM_TRIGGER_POST},
120                 .dpcm_playback = 1,
121                 .dpcm_capture = 1,
122         },
123         {
124                 .name = "Offload0",
125                 .stream_name = "Offload0 Playback",
126                 .cpu_dai_name = "Offload0 Pin",
127                 .platform_name = "haswell-pcm-audio",
128                 .dynamic = 1,
129                 .codec_name = "snd-soc-dummy",
130                 .codec_dai_name = "snd-soc-dummy-dai",
131                 .trigger = {SND_SOC_DPCM_TRIGGER_POST, SND_SOC_DPCM_TRIGGER_POST},
132                 .dpcm_playback = 1,
133         },
134         {
135                 .name = "Offload1",
136                 .stream_name = "Offload1 Playback",
137                 .cpu_dai_name = "Offload1 Pin",
138                 .platform_name = "haswell-pcm-audio",
139                 .dynamic = 1,
140                 .codec_name = "snd-soc-dummy",
141                 .codec_dai_name = "snd-soc-dummy-dai",
142                 .trigger = {SND_SOC_DPCM_TRIGGER_POST, SND_SOC_DPCM_TRIGGER_POST},
143                 .dpcm_playback = 1,
144         },
145         {
146                 .name = "Loopback",
147                 .stream_name = "Loopback",
148                 .cpu_dai_name = "Loopback Pin",
149                 .platform_name = "haswell-pcm-audio",
150                 .dynamic = 0,
151                 .codec_name = "snd-soc-dummy",
152                 .codec_dai_name = "snd-soc-dummy-dai",
153                 .trigger = {SND_SOC_DPCM_TRIGGER_POST, SND_SOC_DPCM_TRIGGER_POST},
154                 .dpcm_capture = 1,
155         },
156 
157         /* Back End DAI links */
158         {
159                 /* SSP0 - Codec */
160                 .name = "Codec",
161                 .be_id = 0,
162                 .cpu_dai_name = "snd-soc-dummy-dai",
163                 .platform_name = "snd-soc-dummy",
164                 .no_pcm = 1,
165                 .codec_name = "i2c-INT33CA:00",
166                 .codec_dai_name = "rt5640-aif1",
167                 .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
168                         SND_SOC_DAIFMT_CBS_CFS,
169                 .ignore_suspend = 1,
170                 .ignore_pmdown_time = 1,
171                 .be_hw_params_fixup = haswell_ssp0_fixup,
172                 .ops = &haswell_rt5640_ops,
173                 .dpcm_playback = 1,
174                 .dpcm_capture = 1,
175         },
176 };
177 
178 /* audio machine driver for Haswell Lynxpoint DSP + RT5640 */
179 static struct snd_soc_card haswell_rt5640 = {
180         .name = "haswell-rt5640",
181         .owner = THIS_MODULE,
182         .dai_link = haswell_rt5640_dais,
183         .num_links = ARRAY_SIZE(haswell_rt5640_dais),
184         .dapm_widgets = haswell_widgets,
185         .num_dapm_widgets = ARRAY_SIZE(haswell_widgets),
186         .dapm_routes = haswell_rt5640_map,
187         .num_dapm_routes = ARRAY_SIZE(haswell_rt5640_map),
188         .fully_routed = true,
189 };
190 
191 static int haswell_audio_probe(struct platform_device *pdev)
192 {
193         haswell_rt5640.dev = &pdev->dev;
194 
195         return devm_snd_soc_register_card(&pdev->dev, &haswell_rt5640);
196 }
197 
198 static struct platform_driver haswell_audio = {
199         .probe = haswell_audio_probe,
200         .driver = {
201                 .name = "haswell-audio",
202         },
203 };
204 
205 module_platform_driver(haswell_audio)
206 
207 /* Module information */
208 MODULE_AUTHOR("Liam Girdwood, Xingchao Wang");
209 MODULE_DESCRIPTION("Intel SST Audio for Haswell Lynxpoint");
210 MODULE_LICENSE("GPL v2");
211 MODULE_ALIAS("platform:haswell-audio");
212 

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