diff options
Diffstat (limited to 'sound/soc/tegra/tegra_sgtl5000.c')
| -rw-r--r-- | sound/soc/tegra/tegra_sgtl5000.c | 223 |
1 files changed, 223 insertions, 0 deletions
diff --git a/sound/soc/tegra/tegra_sgtl5000.c b/sound/soc/tegra/tegra_sgtl5000.c new file mode 100644 index 000000000..e6cbc89ea --- /dev/null +++ b/sound/soc/tegra/tegra_sgtl5000.c @@ -0,0 +1,223 @@ +/* + * tegra_sgtl5000.c - Tegra machine ASoC driver for boards using SGTL5000 codec + * + * Author: Marcel Ziswiler <marcel@ziswiler.com> + * + * This program is free software; you can redistribute it and/or modify it + * under the terms and conditions of the GNU General Public License, + * version 2, as published by the Free Software Foundation. + * + * This program is distributed in the hope 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, see <http://www.gnu.org/licenses/>. + * + * Based on code copyright/by: + * + * Copyright (C) 2010-2012 - NVIDIA, Inc. + * (c) 2009, 2010 Nvidia Graphics Pvt. Ltd. + * Copyright 2007 Wolfson Microelectronics PLC. + */ + +#include <linux/module.h> +#include <linux/platform_device.h> +#include <linux/slab.h> +#include <linux/gpio.h> +#include <linux/of_gpio.h> + +#include <sound/core.h> +#include <sound/pcm.h> +#include <sound/pcm_params.h> +#include <sound/soc.h> + +#include "../codecs/sgtl5000.h" + +#include "tegra_asoc_utils.h" + +#define DRV_NAME "tegra-snd-sgtl5000" + +struct tegra_sgtl5000 { + struct tegra_asoc_utils_data util_data; +}; + +static int tegra_sgtl5000_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_sgtl5000 *machine = snd_soc_card_get_drvdata(card); + int srate, mclk; + int err; + + srate = params_rate(params); + switch (srate) { + case 11025: + case 22050: + case 44100: + case 88200: + mclk = 11289600; + break; + default: + mclk = 12288000; + break; + } + + err = tegra_asoc_utils_set_rate(&machine->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, SGTL5000_SYSCLK, mclk, + SND_SOC_CLOCK_IN); + if (err < 0) { + dev_err(card->dev, "codec_dai clock not set\n"); + return err; + } + + return 0; +} + +static const struct snd_soc_ops tegra_sgtl5000_ops = { + .hw_params = tegra_sgtl5000_hw_params, +}; + +static const struct snd_soc_dapm_widget tegra_sgtl5000_dapm_widgets[] = { + SND_SOC_DAPM_HP("Headphone Jack", NULL), + SND_SOC_DAPM_LINE("Line In Jack", NULL), + SND_SOC_DAPM_MIC("Mic Jack", NULL), +}; + +static struct snd_soc_dai_link tegra_sgtl5000_dai = { + .name = "sgtl5000", + .stream_name = "HiFi", + .codec_dai_name = "sgtl5000", + .ops = &tegra_sgtl5000_ops, + .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF | + SND_SOC_DAIFMT_CBS_CFS, +}; + +static struct snd_soc_card snd_soc_tegra_sgtl5000 = { + .name = "tegra-sgtl5000", + .driver_name = "tegra", + .owner = THIS_MODULE, + .dai_link = &tegra_sgtl5000_dai, + .num_links = 1, + .dapm_widgets = tegra_sgtl5000_dapm_widgets, + .num_dapm_widgets = ARRAY_SIZE(tegra_sgtl5000_dapm_widgets), + .fully_routed = true, +}; + +static int tegra_sgtl5000_driver_probe(struct platform_device *pdev) +{ + struct device_node *np = pdev->dev.of_node; + struct snd_soc_card *card = &snd_soc_tegra_sgtl5000; + struct tegra_sgtl5000 *machine; + int ret; + + machine = devm_kzalloc(&pdev->dev, sizeof(struct tegra_sgtl5000), + GFP_KERNEL); + if (!machine) + return -ENOMEM; + + card->dev = &pdev->dev; + snd_soc_card_set_drvdata(card, machine); + + ret = snd_soc_of_parse_card_name(card, "nvidia,model"); + if (ret) + goto err; + + ret = snd_soc_of_parse_audio_routing(card, "nvidia,audio-routing"); + if (ret) + goto err; + + tegra_sgtl5000_dai.codec_of_node = of_parse_phandle(np, + "nvidia,audio-codec", 0); + if (!tegra_sgtl5000_dai.codec_of_node) { + dev_err(&pdev->dev, + "Property 'nvidia,audio-codec' missing or invalid\n"); + ret = -EINVAL; + goto err; + } + + tegra_sgtl5000_dai.cpu_of_node = of_parse_phandle(np, + "nvidia,i2s-controller", 0); + if (!tegra_sgtl5000_dai.cpu_of_node) { + dev_err(&pdev->dev, + "Property 'nvidia,i2s-controller' missing/invalid\n"); + ret = -EINVAL; + goto err_put_codec_of_node; + } + + tegra_sgtl5000_dai.platform_of_node = tegra_sgtl5000_dai.cpu_of_node; + + ret = tegra_asoc_utils_init(&machine->util_data, &pdev->dev); + if (ret) + goto err_put_cpu_of_node; + + 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(&machine->util_data); +err_put_cpu_of_node: + of_node_put(tegra_sgtl5000_dai.cpu_of_node); + tegra_sgtl5000_dai.cpu_of_node = NULL; + tegra_sgtl5000_dai.platform_of_node = NULL; +err_put_codec_of_node: + of_node_put(tegra_sgtl5000_dai.codec_of_node); + tegra_sgtl5000_dai.codec_of_node = NULL; +err: + return ret; +} + +static int tegra_sgtl5000_driver_remove(struct platform_device *pdev) +{ + struct snd_soc_card *card = platform_get_drvdata(pdev); + struct tegra_sgtl5000 *machine = snd_soc_card_get_drvdata(card); + int ret; + + ret = snd_soc_unregister_card(card); + + tegra_asoc_utils_fini(&machine->util_data); + + of_node_put(tegra_sgtl5000_dai.cpu_of_node); + tegra_sgtl5000_dai.cpu_of_node = NULL; + tegra_sgtl5000_dai.platform_of_node = NULL; + of_node_put(tegra_sgtl5000_dai.codec_of_node); + tegra_sgtl5000_dai.codec_of_node = NULL; + + return ret; +} + +static const struct of_device_id tegra_sgtl5000_of_match[] = { + { .compatible = "nvidia,tegra-audio-sgtl5000", }, + { /* sentinel */ }, +}; + +static struct platform_driver tegra_sgtl5000_driver = { + .driver = { + .name = DRV_NAME, + .pm = &snd_soc_pm_ops, + .of_match_table = tegra_sgtl5000_of_match, + }, + .probe = tegra_sgtl5000_driver_probe, + .remove = tegra_sgtl5000_driver_remove, +}; +module_platform_driver(tegra_sgtl5000_driver); + +MODULE_AUTHOR("Marcel Ziswiler <marcel@ziswiler.com>"); +MODULE_DESCRIPTION("Tegra SGTL5000 machine ASoC driver"); +MODULE_LICENSE("GPL v2"); +MODULE_ALIAS("platform:" DRV_NAME); +MODULE_DEVICE_TABLE(of, tegra_sgtl5000_of_match); |