diff options
Diffstat (limited to 'sound/soc/fsl/vf610-sgtl5000.c')
| -rw-r--r-- | sound/soc/fsl/vf610-sgtl5000.c | 169 |
1 files changed, 169 insertions, 0 deletions
diff --git a/sound/soc/fsl/vf610-sgtl5000.c b/sound/soc/fsl/vf610-sgtl5000.c new file mode 100644 index 0000000..d53d554 --- /dev/null +++ b/sound/soc/fsl/vf610-sgtl5000.c @@ -0,0 +1,169 @@ +/* + * Freescale ALSA SoC Audio using SGTL5000 as codec. + * + * Copyright 2012-2014 Freescale Semiconductor, Inc. + * + * The code contained herein is licensed under the GNU General Public + * License. You may obtain a copy of the GNU General Public License + * Version 2 or later at the following locations: + * + */ + +#include <linux/clk.h> +#include <linux/i2c.h> +#include <linux/module.h> +#include <linux/of.h> +#include <linux/of_platform.h> + +#include "../codecs/sgtl5000.h" +#include "fsl_sai.h" + +static unsigned int sysclk_rate; + +static int vf610_sgtl5000_dai_init(struct snd_soc_pcm_runtime *rtd) +{ + int ret; + struct device *dev = rtd->card->dev; + + ret = snd_soc_dai_set_sysclk(rtd->codec_dai, SGTL5000_SYSCLK, + sysclk_rate, SND_SOC_CLOCK_IN); + if (ret) { + dev_err(dev, "could not set codec driver clock params :%d\n", + ret); + return ret; + } + + ret = snd_soc_dai_set_sysclk(rtd->cpu_dai, FSL_SAI_CLK_BUS, + sysclk_rate, SND_SOC_CLOCK_OUT); + if (ret) { + dev_err(dev, "could not set cpu dai driver clock params :%d\n", + ret); + return ret; + } + + return 0; +} + +static struct snd_soc_dai_link vf610_sgtl5000_dai = { + .name = "HiFi", + .stream_name = "HiFi", + .codec_dai_name = "sgtl5000", + .init = &vf610_sgtl5000_dai_init, + .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF | + SND_SOC_DAIFMT_CBM_CFM, +}; + +static const struct snd_soc_dapm_widget vf610_sgtl5000_dapm_widgets[] = { + SND_SOC_DAPM_MIC("Microphone Jack", NULL), + SND_SOC_DAPM_LINE("Line In Jack", NULL), + SND_SOC_DAPM_HP("Headphone Jack", NULL), + SND_SOC_DAPM_SPK("Speaker Ext", NULL), +}; + +static struct snd_soc_card vf610_sgtl5000_card = { + .owner = THIS_MODULE, + .num_links = 1, + .dai_link = &vf610_sgtl5000_dai, + .dapm_widgets = vf610_sgtl5000_dapm_widgets, + .num_dapm_widgets = ARRAY_SIZE(vf610_sgtl5000_dapm_widgets), +}; + +static int vf610_sgtl5000_parse_dt(struct platform_device *pdev) +{ + int ret; + struct device_node *sai_np, *codec_np; + struct clk *codec_clk; + struct i2c_client *codec_dev; + struct device_node *np = pdev->dev.of_node; + + ret = snd_soc_of_parse_card_name(&vf610_sgtl5000_card, + "simple-audio-card,name"); + if (ret) + return ret; + + ret = snd_soc_of_parse_audio_routing(&vf610_sgtl5000_card, + "simple-audio-card,routing"); + if (ret) + return ret; + + sai_np = of_parse_phandle(np, "simple-audio-card,cpu", 0); + if (!sai_np) { + dev_err(&pdev->dev, "parsing \"saif-controller\" error\n"); + return -EINVAL; + } + vf610_sgtl5000_dai.cpu_of_node = sai_np; + vf610_sgtl5000_dai.platform_of_node = sai_np; + + codec_np = of_parse_phandle(np, "simple-audio-card,codec", 0); + if (!codec_np) { + dev_err(&pdev->dev, "parsing \"audio-codec\" error\n"); + ret = -EINVAL; + goto sai_np_fail; + } + vf610_sgtl5000_dai.codec_of_node = codec_np; + + codec_dev = of_find_i2c_device_by_node(codec_np); + if (!codec_dev) { + dev_err(&pdev->dev, "failed to find codec platform device\n"); + ret = PTR_ERR(codec_dev); + goto codec_np_fail; + } + + codec_clk = devm_clk_get(&codec_dev->dev, NULL); + if (IS_ERR(codec_clk)) { + dev_err(&pdev->dev, "failed to get codec clock\n"); + ret = PTR_ERR(codec_clk); + goto codec_np_fail; + } + + sysclk_rate = clk_get_rate(codec_clk); + +codec_np_fail: + of_node_put(codec_np); +sai_np_fail: + of_node_put(sai_np); + + return ret; +} + +static int vf610_sgtl5000_probe(struct platform_device *pdev) +{ + int ret; + + vf610_sgtl5000_card.dev = &pdev->dev; + + ret = vf610_sgtl5000_parse_dt(pdev); + if (ret) { + dev_err(&pdev->dev, "parse sgtl5000 device tree failed :%d\n", + ret); + return ret; + } + + ret = snd_soc_register_card(&vf610_sgtl5000_card); + if (ret) { + dev_err(&pdev->dev, "TWR-AUDIO-SGTL board required :%d\n", + ret); + return ret; + } + + return 0; +} + +static const struct of_device_id vf610_sgtl5000_dt_ids[] = { + { .compatible = "fsl,vf610-sgtl5000", }, + { /* sentinel */ } +}; +MODULE_DEVICE_TABLE(of, vf610_sgtl5000_dt_ids); + +static struct platform_driver vf610_sgtl5000_driver = { + .probe = vf610_sgtl5000_probe, + .driver = { + .name = "vf610-sgtl5000", + .owner = THIS_MODULE, + .of_match_table = vf610_sgtl5000_dt_ids, + }, +}; +module_platform_driver(vf610_sgtl5000_driver); + +MODULE_DESCRIPTION("Freescale SGTL5000 ASoC driver"); +MODULE_LICENSE("GPL"); |