diff options
Diffstat (limited to 'kernel/sound/soc/tegra/trimslice.c')
| -rw-r--r-- | kernel/sound/soc/tegra/trimslice.c | 206 |
1 files changed, 206 insertions, 0 deletions
diff --git a/kernel/sound/soc/tegra/trimslice.c b/kernel/sound/soc/tegra/trimslice.c new file mode 100644 index 000000000..2cea203c4 --- /dev/null +++ b/kernel/sound/soc/tegra/trimslice.c @@ -0,0 +1,206 @@ +/* + * trimslice.c - TrimSlice machine ASoC driver + * + * Copyright (C) 2011 - CompuLab, Ltd. + * Author: Mike Rapoport <mike@compulab.co.il> + * + * Based on code copyright/by: + * Author: Stephen Warren <swarren@nvidia.com> + * Copyright (C) 2010-2011 - NVIDIA, Inc. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * version 2 as published by the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA + * 02110-1301 USA + * + */ + +#include <linux/module.h> +#include <linux/of.h> +#include <linux/platform_device.h> +#include <linux/slab.h> + +#include <sound/core.h> +#include <sound/jack.h> +#include <sound/pcm.h> +#include <sound/pcm_params.h> +#include <sound/soc.h> + +#include "../codecs/tlv320aic23.h" + +#include "tegra_asoc_utils.h" + +#define DRV_NAME "tegra-snd-trimslice" + +struct tegra_trimslice { + struct tegra_asoc_utils_data util_data; +}; + +static int trimslice_asoc_hw_params(struct snd_pcm_substream *substream, + struct snd_pcm_hw_params *params) +{ + struct snd_soc_pcm_runtime *rtd = substream->private_data; + struct snd_soc_dai *codec_dai = rtd->codec_dai; + struct snd_soc_card *card = rtd->card; + struct tegra_trimslice *trimslice = snd_soc_card_get_drvdata(card); + int srate, mclk; + int err; + + srate = params_rate(params); + mclk = 128 * srate; + + err = tegra_asoc_utils_set_rate(&trimslice->util_data, srate, mclk); + if (err < 0) { + dev_err(card->dev, "Can't configure clocks\n"); + return err; + } + + err = snd_soc_dai_set_sysclk(codec_dai, 0, mclk, + SND_SOC_CLOCK_IN); + if (err < 0) { + dev_err(card->dev, "codec_dai clock not set\n"); + return err; + } + + return 0; +} + +static struct snd_soc_ops trimslice_asoc_ops = { + .hw_params = trimslice_asoc_hw_params, +}; + +static const struct snd_soc_dapm_widget trimslice_dapm_widgets[] = { + SND_SOC_DAPM_HP("Line Out", NULL), + SND_SOC_DAPM_LINE("Line In", NULL), +}; + +static const struct snd_soc_dapm_route trimslice_audio_map[] = { + {"Line Out", NULL, "LOUT"}, + {"Line Out", NULL, "ROUT"}, + + {"LLINEIN", NULL, "Line In"}, + {"RLINEIN", NULL, "Line In"}, +}; + +static struct snd_soc_dai_link trimslice_tlv320aic23_dai = { + .name = "TLV320AIC23", + .stream_name = "AIC23", + .codec_dai_name = "tlv320aic23-hifi", + .ops = &trimslice_asoc_ops, + .dai_fmt = SND_SOC_DAIFMT_I2S | + SND_SOC_DAIFMT_NB_NF | + SND_SOC_DAIFMT_CBS_CFS, +}; + +static struct snd_soc_card snd_soc_trimslice = { + .name = "tegra-trimslice", + .owner = THIS_MODULE, + .dai_link = &trimslice_tlv320aic23_dai, + .num_links = 1, + + .dapm_widgets = trimslice_dapm_widgets, + .num_dapm_widgets = ARRAY_SIZE(trimslice_dapm_widgets), + .dapm_routes = trimslice_audio_map, + .num_dapm_routes = ARRAY_SIZE(trimslice_audio_map), + .fully_routed = true, +}; + +static int tegra_snd_trimslice_probe(struct platform_device *pdev) +{ + struct device_node *np = pdev->dev.of_node; + struct snd_soc_card *card = &snd_soc_trimslice; + struct tegra_trimslice *trimslice; + int ret; + + trimslice = devm_kzalloc(&pdev->dev, sizeof(struct tegra_trimslice), + GFP_KERNEL); + if (!trimslice) { + dev_err(&pdev->dev, "Can't allocate tegra_trimslice\n"); + return -ENOMEM; + } + + card->dev = &pdev->dev; + platform_set_drvdata(pdev, card); + snd_soc_card_set_drvdata(card, trimslice); + + trimslice_tlv320aic23_dai.codec_of_node = of_parse_phandle(np, + "nvidia,audio-codec", 0); + if (!trimslice_tlv320aic23_dai.codec_of_node) { + dev_err(&pdev->dev, + "Property 'nvidia,audio-codec' missing or invalid\n"); + ret = -EINVAL; + goto err; + } + + trimslice_tlv320aic23_dai.cpu_of_node = of_parse_phandle(np, + "nvidia,i2s-controller", 0); + if (!trimslice_tlv320aic23_dai.cpu_of_node) { + dev_err(&pdev->dev, + "Property 'nvidia,i2s-controller' missing or invalid\n"); + ret = -EINVAL; + goto err; + } + + trimslice_tlv320aic23_dai.platform_of_node = + trimslice_tlv320aic23_dai.cpu_of_node; + + ret = tegra_asoc_utils_init(&trimslice->util_data, &pdev->dev); + if (ret) + goto err; + + ret = snd_soc_register_card(card); + if (ret) { + dev_err(&pdev->dev, "snd_soc_register_card failed (%d)\n", + ret); + goto err_fini_utils; + } + + return 0; + +err_fini_utils: + tegra_asoc_utils_fini(&trimslice->util_data); +err: + return ret; +} + +static int tegra_snd_trimslice_remove(struct platform_device *pdev) +{ + struct snd_soc_card *card = platform_get_drvdata(pdev); + struct tegra_trimslice *trimslice = snd_soc_card_get_drvdata(card); + + snd_soc_unregister_card(card); + + tegra_asoc_utils_fini(&trimslice->util_data); + + return 0; +} + +static const struct of_device_id trimslice_of_match[] = { + { .compatible = "nvidia,tegra-audio-trimslice", }, + {}, +}; +MODULE_DEVICE_TABLE(of, trimslice_of_match); + +static struct platform_driver tegra_snd_trimslice_driver = { + .driver = { + .name = DRV_NAME, + .of_match_table = trimslice_of_match, + }, + .probe = tegra_snd_trimslice_probe, + .remove = tegra_snd_trimslice_remove, +}; +module_platform_driver(tegra_snd_trimslice_driver); + +MODULE_AUTHOR("Mike Rapoport <mike@compulab.co.il>"); +MODULE_DESCRIPTION("Trimslice machine ASoC driver"); +MODULE_LICENSE("GPL"); +MODULE_ALIAS("platform:" DRV_NAME); |