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                 .of_match_table = trimslice_of_match,
 197         },
 198         .probe = tegra_snd_trimslice_probe,
 199         .remove = tegra_snd_trimslice_remove,
 200 };
 201 module_platform_driver(tegra_snd_trimslice_driver);
 202
 203 MODULE_AUTHOR("Mike Rapoport <mike@compulab.co.il>");
 204 MODULE_DESCRIPTION("Trimslice machine ASoC driver");
 205 MODULE_LICENSE("GPL");
 206 MODULE_ALIAS("platform:" DRV_NAME);