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Linux/sound/soc/tegra/trimslice.c

  1 /*
  2  * trimslice.c - TrimSlice machine ASoC driver
  3  *
  4  * Copyright (C) 2011 - CompuLab, Ltd.
  5  * Author: Mike Rapoport <mike@compulab.co.il>
  6  *
  7  * Based on code copyright/by:
  8  * Author: Stephen Warren <swarren@nvidia.com>
  9  * Copyright (C) 2010-2011 - NVIDIA, Inc.
 10  *
 11  * This program is free software; you can redistribute it and/or
 12  * modify it under the terms of the GNU General Public License
 13  * version 2 as published by the Free Software Foundation.
 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  * You should have received a copy of the GNU General Public License
 21  * along with this program; if not, write to the Free Software
 22  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
 23  * 02110-1301 USA
 24  *
 25  */
 26 
 27 #include <linux/module.h>
 28 #include <linux/of.h>
 29 #include <linux/platform_device.h>
 30 #include <linux/slab.h>
 31 
 32 #include <sound/core.h>
 33 #include <sound/jack.h>
 34 #include <sound/pcm.h>
 35 #include <sound/pcm_params.h>
 36 #include <sound/soc.h>
 37 
 38 #include "../codecs/tlv320aic23.h"
 39 
 40 #include "tegra_asoc_utils.h"
 41 
 42 #define DRV_NAME "tegra-snd-trimslice"
 43 
 44 struct tegra_trimslice {
 45         struct tegra_asoc_utils_data util_data;
 46 };
 47 
 48 static int trimslice_asoc_hw_params(struct snd_pcm_substream *substream,
 49                                         struct snd_pcm_hw_params *params)
 50 {
 51         struct snd_soc_pcm_runtime *rtd = substream->private_data;
 52         struct snd_soc_dai *codec_dai = rtd->codec_dai;
 53         struct snd_soc_codec *codec = codec_dai->codec;
 54         struct snd_soc_card *card = codec->card;
 55         struct tegra_trimslice *trimslice = snd_soc_card_get_drvdata(card);
 56         int srate, mclk;
 57         int err;
 58 
 59         srate = params_rate(params);
 60         mclk = 128 * srate;
 61 
 62         err = tegra_asoc_utils_set_rate(&trimslice->util_data, srate, mclk);
 63         if (err < 0) {
 64                 dev_err(card->dev, "Can't configure clocks\n");
 65                 return err;
 66         }
 67 
 68         err = snd_soc_dai_set_sysclk(codec_dai, 0, mclk,
 69                                         SND_SOC_CLOCK_IN);
 70         if (err < 0) {
 71                 dev_err(card->dev, "codec_dai clock not set\n");
 72                 return err;
 73         }
 74 
 75         return 0;
 76 }
 77 
 78 static struct snd_soc_ops trimslice_asoc_ops = {
 79         .hw_params = trimslice_asoc_hw_params,
 80 };
 81 
 82 static const struct snd_soc_dapm_widget trimslice_dapm_widgets[] = {
 83         SND_SOC_DAPM_HP("Line Out", NULL),
 84         SND_SOC_DAPM_LINE("Line In", NULL),
 85 };
 86 
 87 static const struct snd_soc_dapm_route trimslice_audio_map[] = {
 88         {"Line Out", NULL, "LOUT"},
 89         {"Line Out", NULL, "ROUT"},
 90 
 91         {"LLINEIN", NULL, "Line In"},
 92         {"RLINEIN", NULL, "Line In"},
 93 };
 94 
 95 static struct snd_soc_dai_link trimslice_tlv320aic23_dai = {
 96         .name = "TLV320AIC23",
 97         .stream_name = "AIC23",
 98         .codec_dai_name = "tlv320aic23-hifi",
 99         .ops = &trimslice_asoc_ops,
100         .dai_fmt = SND_SOC_DAIFMT_I2S |
101                    SND_SOC_DAIFMT_NB_NF |
102                    SND_SOC_DAIFMT_CBS_CFS,
103 };
104 
105 static struct snd_soc_card snd_soc_trimslice = {
106         .name = "tegra-trimslice",
107         .owner = THIS_MODULE,
108         .dai_link = &trimslice_tlv320aic23_dai,
109         .num_links = 1,
110 
111         .dapm_widgets = trimslice_dapm_widgets,
112         .num_dapm_widgets = ARRAY_SIZE(trimslice_dapm_widgets),
113         .dapm_routes = trimslice_audio_map,
114         .num_dapm_routes = ARRAY_SIZE(trimslice_audio_map),
115         .fully_routed = true,
116 };
117 
118 static int tegra_snd_trimslice_probe(struct platform_device *pdev)
119 {
120         struct device_node *np = pdev->dev.of_node;
121         struct snd_soc_card *card = &snd_soc_trimslice;
122         struct tegra_trimslice *trimslice;
123         int ret;
124 
125         trimslice = devm_kzalloc(&pdev->dev, sizeof(struct tegra_trimslice),
126                                  GFP_KERNEL);
127         if (!trimslice) {
128                 dev_err(&pdev->dev, "Can't allocate tegra_trimslice\n");
129                 return -ENOMEM;
130         }
131 
132         card->dev = &pdev->dev;
133         platform_set_drvdata(pdev, card);
134         snd_soc_card_set_drvdata(card, trimslice);
135 
136         trimslice_tlv320aic23_dai.codec_of_node = of_parse_phandle(np,
137                         "nvidia,audio-codec", 0);
138         if (!trimslice_tlv320aic23_dai.codec_of_node) {
139                 dev_err(&pdev->dev,
140                         "Property 'nvidia,audio-codec' missing or invalid\n");
141                 ret = -EINVAL;
142                 goto err;
143         }
144 
145         trimslice_tlv320aic23_dai.cpu_of_node = of_parse_phandle(np,
146                         "nvidia,i2s-controller", 0);
147         if (!trimslice_tlv320aic23_dai.cpu_of_node) {
148                 dev_err(&pdev->dev,
149                         "Property 'nvidia,i2s-controller' missing or invalid\n");
150                 ret = -EINVAL;
151                 goto err;
152         }
153 
154         trimslice_tlv320aic23_dai.platform_of_node =
155                         trimslice_tlv320aic23_dai.cpu_of_node;
156 
157         ret = tegra_asoc_utils_init(&trimslice->util_data, &pdev->dev);
158         if (ret)
159                 goto err;
160 
161         ret = snd_soc_register_card(card);
162         if (ret) {
163                 dev_err(&pdev->dev, "snd_soc_register_card failed (%d)\n",
164                         ret);
165                 goto err_fini_utils;
166         }
167 
168         return 0;
169 
170 err_fini_utils:
171         tegra_asoc_utils_fini(&trimslice->util_data);
172 err:
173         return ret;
174 }
175 
176 static int tegra_snd_trimslice_remove(struct platform_device *pdev)
177 {
178         struct snd_soc_card *card = platform_get_drvdata(pdev);
179         struct tegra_trimslice *trimslice = snd_soc_card_get_drvdata(card);
180 
181         snd_soc_unregister_card(card);
182 
183         tegra_asoc_utils_fini(&trimslice->util_data);
184 
185         return 0;
186 }
187 
188 static const struct of_device_id trimslice_of_match[] = {
189         { .compatible = "nvidia,tegra-audio-trimslice", },
190         {},
191 };
192 MODULE_DEVICE_TABLE(of, trimslice_of_match);
193 
194 static struct platform_driver tegra_snd_trimslice_driver = {
195         .driver = {
196                 .name = DRV_NAME,
197                 .owner = THIS_MODULE,
198                 .of_match_table = trimslice_of_match,
199         },
200         .probe = tegra_snd_trimslice_probe,
201         .remove = tegra_snd_trimslice_remove,
202 };
203 module_platform_driver(tegra_snd_trimslice_driver);
204 
205 MODULE_AUTHOR("Mike Rapoport <mike@compulab.co.il>");
206 MODULE_DESCRIPTION("Trimslice machine ASoC driver");
207 MODULE_LICENSE("GPL");
208 MODULE_ALIAS("platform:" DRV_NAME);
209 

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