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 <asm/mach-types.h>
  28
  29 #include <linux/module.h>
  30 #include <linux/of.h>
  31 #include <linux/platform_device.h>
  32 #include <linux/slab.h>
  33
  34 #include <sound/core.h>
  35 #include <sound/jack.h>
  36 #include <sound/pcm.h>
  37 #include <sound/pcm_params.h>
  38 #include <sound/soc.h>
  39
  40 #include "../codecs/tlv320aic23.h"
  41
  42 #include "tegra_asoc_utils.h"
  43
  44 #define DRV_NAME "tegra-snd-trimslice"
  45
  46 struct tegra_trimslice {
  47         struct tegra_asoc_utils_data util_data;
  48 };
  49
  50 static int trimslice_asoc_hw_params(struct snd_pcm_substream *substream,
  51                                         struct snd_pcm_hw_params *params)
  52 {
  53         struct snd_soc_pcm_runtime *rtd = substream->private_data;
  54         struct snd_soc_dai *codec_dai = rtd->codec_dai;
  55         struct snd_soc_codec *codec = codec_dai->codec;
  56         struct snd_soc_card *card = codec->card;
  57         struct tegra_trimslice *trimslice = snd_soc_card_get_drvdata(card);
  58         int srate, mclk;
  59         int err;
  60
  61         srate = params_rate(params);
  62         mclk = 128 * srate;
  63
  64         err = tegra_asoc_utils_set_rate(&trimslice->util_data, srate, mclk);
  65         if (err < 0) {
  66                 dev_err(card->dev, "Can't configure clocks\n");
  67                 return err;
  68         }
  69
  70         err = snd_soc_dai_set_sysclk(codec_dai, 0, mclk,
  71                                         SND_SOC_CLOCK_IN);
  72         if (err < 0) {
  73                 dev_err(card->dev, "codec_dai clock not set\n");
  74                 return err;
  75         }
  76
  77         return 0;
  78 }
  79
  80 static struct snd_soc_ops trimslice_asoc_ops = {
  81         .hw_params = trimslice_asoc_hw_params,
  82 };
  83
  84 static const struct snd_soc_dapm_widget trimslice_dapm_widgets[] = {
  85         SND_SOC_DAPM_HP("Line Out", NULL),
  86         SND_SOC_DAPM_LINE("Line In", NULL),
  87 };
  88
  89 static const struct snd_soc_dapm_route trimslice_audio_map[] = {
  90         {"Line Out", NULL, "LOUT"},
  91         {"Line Out", NULL, "ROUT"},
  92
  93         {"LLINEIN", NULL, "Line In"},
  94         {"RLINEIN", NULL, "Line In"},
  95 };
  96
  97 static struct snd_soc_dai_link trimslice_tlv320aic23_dai = {
  98         .name = "TLV320AIC23",
  99         .stream_name = "AIC23",
 100         .codec_name = "tlv320aic23-codec.2-001a",
 101         .platform_name = "tegra20-i2s.0",
 102         .cpu_dai_name = "tegra20-i2s.0",
 103         .codec_dai_name = "tlv320aic23-hifi",
 104         .ops = &trimslice_asoc_ops,
 105         .dai_fmt = SND_SOC_DAIFMT_I2S |
 106                    SND_SOC_DAIFMT_NB_NF |
 107                    SND_SOC_DAIFMT_CBS_CFS,
 108 };
 109
 110 static struct snd_soc_card snd_soc_trimslice = {
 111         .name = "tegra-trimslice",
 112         .owner = THIS_MODULE,
 113         .dai_link = &trimslice_tlv320aic23_dai,
 114         .num_links = 1,
 115
 116         .dapm_widgets = trimslice_dapm_widgets,
 117         .num_dapm_widgets = ARRAY_SIZE(trimslice_dapm_widgets),
 118         .dapm_routes = trimslice_audio_map,
 119         .num_dapm_routes = ARRAY_SIZE(trimslice_audio_map),
 120         .fully_routed = true,
 121 };
 122
 123 static __devinit int tegra_snd_trimslice_probe(struct platform_device *pdev)
 124 {
 125         struct snd_soc_card *card = &snd_soc_trimslice;
 126         struct tegra_trimslice *trimslice;
 127         int ret;
 128
 129         trimslice = devm_kzalloc(&pdev->dev, sizeof(struct tegra_trimslice),
 130                                  GFP_KERNEL);
 131         if (!trimslice) {
 132                 dev_err(&pdev->dev, "Can't allocate tegra_trimslice\n");
 133                 ret = -ENOMEM;
 134                 goto err;
 135         }
 136
 137         if (pdev->dev.of_node) {
 138                 trimslice_tlv320aic23_dai.codec_name = NULL;
 139                 trimslice_tlv320aic23_dai.codec_of_node = of_parse_phandle(
 140                                 pdev->dev.of_node, "nvidia,audio-codec", 0);
 141                 if (!trimslice_tlv320aic23_dai.codec_of_node) {
 142                         dev_err(&pdev->dev,
 143                                 "Property 'nvidia,audio-codec' missing or invalid\n");
 144                         ret = -EINVAL;
 145                         goto err;
 146                 }
 147
 148                 trimslice_tlv320aic23_dai.cpu_dai_name = NULL;
 149                 trimslice_tlv320aic23_dai.cpu_of_node = of_parse_phandle(
 150                                 pdev->dev.of_node, "nvidia,i2s-controller", 0);
 151                 if (!trimslice_tlv320aic23_dai.cpu_of_node) {
 152                         dev_err(&pdev->dev,
 153                                 "Property 'nvidia,i2s-controller' missing or invalid\n");
 154                         ret = -EINVAL;
 155                         goto err;
 156                 }
 157
 158                 trimslice_tlv320aic23_dai.platform_name = NULL;
 159                 trimslice_tlv320aic23_dai.platform_of_node =
 160                                 trimslice_tlv320aic23_dai.cpu_of_node;
 161         }
 162
 163         ret = tegra_asoc_utils_init(&trimslice->util_data, &pdev->dev);
 164         if (ret)
 165                 goto err;
 166
 167         card->dev = &pdev->dev;
 168         platform_set_drvdata(pdev, card);
 169         snd_soc_card_set_drvdata(card, trimslice);
 170
 171         ret = snd_soc_register_card(card);
 172         if (ret) {
 173                 dev_err(&pdev->dev, "snd_soc_register_card failed (%d)\n",
 174                         ret);
 175                 goto err_fini_utils;
 176         }
 177
 178         return 0;
 179
 180 err_fini_utils:
 181         tegra_asoc_utils_fini(&trimslice->util_data);
 182 err:
 183         return ret;
 184 }
 185
 186 static int __devexit tegra_snd_trimslice_remove(struct platform_device *pdev)
 187 {
 188         struct snd_soc_card *card = platform_get_drvdata(pdev);
 189         struct tegra_trimslice *trimslice = snd_soc_card_get_drvdata(card);
 190
 191         snd_soc_unregister_card(card);
 192
 193         tegra_asoc_utils_fini(&trimslice->util_data);
 194
 195         return 0;
 196 }
 197
 198 static const struct of_device_id trimslice_of_match[] __devinitconst = {
 199         { .compatible = "nvidia,tegra-audio-trimslice", },
 200         {},
 201 };
 202 MODULE_DEVICE_TABLE(of, trimslice_of_match);
 203
 204 static struct platform_driver tegra_snd_trimslice_driver = {
 205         .driver = {
 206                 .name = DRV_NAME,
 207                 .owner = THIS_MODULE,
 208                 .of_match_table = trimslice_of_match,
 209         },
 210         .probe = tegra_snd_trimslice_probe,
 211         .remove = __devexit_p(tegra_snd_trimslice_remove),
 212 };
 213 module_platform_driver(tegra_snd_trimslice_driver);
 214
 215 MODULE_AUTHOR("Mike Rapoport <mike@compulab.co.il>");
 216 MODULE_DESCRIPTION("Trimslice machine ASoC driver");
 217 MODULE_LICENSE("GPL");
 218 MODULE_ALIAS("platform:" DRV_NAME);