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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_card *card = rtd->card;
 54         struct tegra_trimslice *trimslice = snd_soc_card_get_drvdata(card);
 55         int srate, mclk;
 56         int err;
 57 
 58         srate = params_rate(params);
 59         mclk = 128 * srate;
 60 
 61         err = tegra_asoc_utils_set_rate(&trimslice->util_data, srate, mclk);
 62         if (err < 0) {
 63                 dev_err(card->dev, "Can't configure clocks\n");
 64                 return err;
 65         }
 66 
 67         err = snd_soc_dai_set_sysclk(codec_dai, 0, mclk,
 68                                         SND_SOC_CLOCK_IN);
 69         if (err < 0) {
 70                 dev_err(card->dev, "codec_dai clock not set\n");
 71                 return err;
 72         }
 73 
 74         return 0;
 75 }
 76 
 77 static struct snd_soc_ops trimslice_asoc_ops = {
 78         .hw_params = trimslice_asoc_hw_params,
 79 };
 80 
 81 static const struct snd_soc_dapm_widget trimslice_dapm_widgets[] = {
 82         SND_SOC_DAPM_HP("Line Out", NULL),
 83         SND_SOC_DAPM_LINE("Line In", NULL),
 84 };
 85 
 86 static const struct snd_soc_dapm_route trimslice_audio_map[] = {
 87         {"Line Out", NULL, "LOUT"},
 88         {"Line Out", NULL, "ROUT"},
 89 
 90         {"LLINEIN", NULL, "Line In"},
 91         {"RLINEIN", NULL, "Line In"},
 92 };
 93 
 94 static struct snd_soc_dai_link trimslice_tlv320aic23_dai = {
 95         .name = "TLV320AIC23",
 96         .stream_name = "AIC23",
 97         .codec_dai_name = "tlv320aic23-hifi",
 98         .ops = &trimslice_asoc_ops,
 99         .dai_fmt = SND_SOC_DAIFMT_I2S |
100                    SND_SOC_DAIFMT_NB_NF |
101                    SND_SOC_DAIFMT_CBS_CFS,
102 };
103 
104 static struct snd_soc_card snd_soc_trimslice = {
105         .name = "tegra-trimslice",
106         .owner = THIS_MODULE,
107         .dai_link = &trimslice_tlv320aic23_dai,
108         .num_links = 1,
109 
110         .dapm_widgets = trimslice_dapm_widgets,
111         .num_dapm_widgets = ARRAY_SIZE(trimslice_dapm_widgets),
112         .dapm_routes = trimslice_audio_map,
113         .num_dapm_routes = ARRAY_SIZE(trimslice_audio_map),
114         .fully_routed = true,
115 };
116 
117 static int tegra_snd_trimslice_probe(struct platform_device *pdev)
118 {
119         struct device_node *np = pdev->dev.of_node;
120         struct snd_soc_card *card = &snd_soc_trimslice;
121         struct tegra_trimslice *trimslice;
122         int ret;
123 
124         trimslice = devm_kzalloc(&pdev->dev, sizeof(struct tegra_trimslice),
125                                  GFP_KERNEL);
126         if (!trimslice) {
127                 dev_err(&pdev->dev, "Can't allocate tegra_trimslice\n");
128                 return -ENOMEM;
129         }
130 
131         card->dev = &pdev->dev;
132         platform_set_drvdata(pdev, card);
133         snd_soc_card_set_drvdata(card, trimslice);
134 
135         trimslice_tlv320aic23_dai.codec_of_node = of_parse_phandle(np,
136                         "nvidia,audio-codec", 0);
137         if (!trimslice_tlv320aic23_dai.codec_of_node) {
138                 dev_err(&pdev->dev,
139                         "Property 'nvidia,audio-codec' missing or invalid\n");
140                 ret = -EINVAL;
141                 goto err;
142         }
143 
144         trimslice_tlv320aic23_dai.cpu_of_node = of_parse_phandle(np,
145                         "nvidia,i2s-controller", 0);
146         if (!trimslice_tlv320aic23_dai.cpu_of_node) {
147                 dev_err(&pdev->dev,
148                         "Property 'nvidia,i2s-controller' missing or invalid\n");
149                 ret = -EINVAL;
150                 goto err;
151         }
152 
153         trimslice_tlv320aic23_dai.platform_of_node =
154                         trimslice_tlv320aic23_dai.cpu_of_node;
155 
156         ret = tegra_asoc_utils_init(&trimslice->util_data, &pdev->dev);
157         if (ret)
158                 goto err;
159 
160         ret = snd_soc_register_card(card);
161         if (ret) {
162                 dev_err(&pdev->dev, "snd_soc_register_card failed (%d)\n",
163                         ret);
164                 goto err_fini_utils;
165         }
166 
167         return 0;
168 
169 err_fini_utils:
170         tegra_asoc_utils_fini(&trimslice->util_data);
171 err:
172         return ret;
173 }
174 
175 static int tegra_snd_trimslice_remove(struct platform_device *pdev)
176 {
177         struct snd_soc_card *card = platform_get_drvdata(pdev);
178         struct tegra_trimslice *trimslice = snd_soc_card_get_drvdata(card);
179 
180         snd_soc_unregister_card(card);
181 
182         tegra_asoc_utils_fini(&trimslice->util_data);
183 
184         return 0;
185 }
186 
187 static const struct of_device_id trimslice_of_match[] = {
188         { .compatible = "nvidia,tegra-audio-trimslice", },
189         {},
190 };
191 MODULE_DEVICE_TABLE(of, trimslice_of_match);
192 
193 static struct platform_driver tegra_snd_trimslice_driver = {
194         .driver = {
195                 .name = DRV_NAME,
196                 .owner = THIS_MODULE,
197                 .of_match_table = trimslice_of_match,
198         },
199         .probe = tegra_snd_trimslice_probe,
200         .remove = tegra_snd_trimslice_remove,
201 };
202 module_platform_driver(tegra_snd_trimslice_driver);
203 
204 MODULE_AUTHOR("Mike Rapoport <mike@compulab.co.il>");
205 MODULE_DESCRIPTION("Trimslice machine ASoC driver");
206 MODULE_LICENSE("GPL");
207 MODULE_ALIAS("platform:" DRV_NAME);
208 

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