This is the SGTl5000 codec based audio driver supported with both playback and capture dai link implemention.
This implementation is only compatible with device tree definition.
Signed-off-by: Alison Wang <b18965@freescale.com Signed-off-by: Xiubo Li Li.Xiubo@freescale.com --- sound/soc/fsl/Kconfig | 10 +++ sound/soc/fsl/Makefile | 2 + sound/soc/fsl/fsl-sgtl5000.c | 208 +++++++++++++++++++++++++++++++++++++++++++ 3 files changed, 220 insertions(+) create mode 100644 sound/soc/fsl/fsl-sgtl5000.c
diff --git a/sound/soc/fsl/Kconfig b/sound/soc/fsl/Kconfig index a49b386..3fbbbf2 100644 --- a/sound/soc/fsl/Kconfig +++ b/sound/soc/fsl/Kconfig @@ -220,4 +220,14 @@ config SND_SOC_FSL_PCM tristate select SND_SOC_GENERIC_DMAENGINE_PCM
+config SND_SOC_FSL_SGTL5000 + tristate "SoC Audio support for FSL boards with sgtl5000" + depends on OF && I2C + select SND_SOC_FSL_SAI + select SND_SOC_FSL_PCM + select SND_SOC_SGTL5000 + help + Say Y if you want to add support for SoC audio on an FSL board with + a sgtl5000 codec. + endif # SND_FSL_SOC diff --git a/sound/soc/fsl/Makefile b/sound/soc/fsl/Makefile index 865ac23..e8bf0bd 100644 --- a/sound/soc/fsl/Makefile +++ b/sound/soc/fsl/Makefile @@ -58,6 +58,8 @@ obj-$(CONFIG_SND_SOC_IMX_MC13783) += snd-soc-imx-mc13783.o # FSL ARM SAI/SGT15000 Platform Support snd-soc-fsl-sai-objs := fsl-sai.o snd-soc-fsl-pcm-objs := fsl-pcm-dma.o +snd-soc-fsl-sgtl5000-objs := fsl-sgtl5000.o
obj-$(CONFIG_SND_SOC_FSL_SAI) += snd-soc-fsl-sai.o obj-$(CONFIG_SND_SOC_FSL_PCM) += snd-soc-fsl-pcm.o +obj-$(CONFIG_SND_SOC_FSL_SGTL5000) += snd-soc-fsl-sgtl5000.o diff --git a/sound/soc/fsl/fsl-sgtl5000.c b/sound/soc/fsl/fsl-sgtl5000.c new file mode 100644 index 0000000..bab85ec --- /dev/null +++ b/sound/soc/fsl/fsl-sgtl5000.c @@ -0,0 +1,208 @@ +/* + * Freeacale ALSA SoC Audio using SGT1500 as codec. + * + * Copyright 2012-2013 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/module.h> +#include <linux/of.h> +#include <linux/of_platform.h> +#include <linux/i2c.h> +#include <linux/clk.h> + +#include "../codecs/sgtl5000.h" +#include "fsl-sai.h" + +static unsigned int sysclk_rate; + +static int fsl_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 int sgtl5000_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 *cpu_dai = rtd->cpu_dai; + unsigned int channels = params_channels(params); + + /* TODO: The SAI driver should figure this out for us */ + switch (channels) { + case 2: + snd_soc_dai_set_tdm_slot(cpu_dai, 0xfffffffc, 0xfffffffc, 2, 0); + break; + case 1: + snd_soc_dai_set_tdm_slot(cpu_dai, 0xfffffffe, 0xfffffffe, 1, 0); + break; + default: + return -EINVAL; + } + + return 0; +} + +static struct snd_soc_ops fsl_sgtl5000_hifi_ops = { + .hw_params = sgtl5000_params, +}; + +static struct snd_soc_dai_link fsl_sgtl5000_dai = { + .name = "HiFi", + .stream_name = "HiFi", + .codec_dai_name = "sgtl5000", + .init = &fsl_sgtl5000_dai_init, + .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF | + SND_SOC_DAIFMT_CBM_CFM, + .ops = &fsl_sgtl5000_hifi_ops, +}; + +static const struct snd_soc_dapm_widget fsl_sgtl5000_dapm_widgets[] = { + SND_SOC_DAPM_MIC("Mic Jack", NULL), + SND_SOC_DAPM_LINE("Line In Jack", NULL), + SND_SOC_DAPM_HP("Headphone Jack", NULL), + SND_SOC_DAPM_SPK("Line Out Jack", NULL), + SND_SOC_DAPM_SPK("Ext Spk", NULL), +}; + +static struct snd_soc_card fsl_sgt1500_card = { + .owner = THIS_MODULE, + .num_links = 1, + .dai_link = &fsl_sgtl5000_dai, + .dapm_widgets = fsl_sgtl5000_dapm_widgets, + .num_dapm_widgets = ARRAY_SIZE(fsl_sgtl5000_dapm_widgets), +}; + +static int fsl_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(&fsl_sgt1500_card, "model"); + if (ret) + return ret; + + ret = snd_soc_of_parse_audio_routing(&fsl_sgt1500_card, + "audio-routing"); + if (ret) + return ret; + + sai_np = of_parse_phandle(np, "saif-controller", 0); + if (!sai_np) { + dev_err(&pdev->dev, ""saif-controller" phandle missing or " + "invalid\n"); + return -EINVAL; + } + fsl_sgtl5000_dai.cpu_of_node = sai_np; + fsl_sgtl5000_dai.platform_of_node = sai_np; + + codec_np = of_parse_phandle(np, "audio-codec", 0); + if (!codec_np) { + dev_err(&pdev->dev, ""audio-codec" phandle missing or " + "invalid\n"); + ret = -EINVAL; + goto sai_np_fail; + } + fsl_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 fsl_sgtl5000_probe(struct platform_device *pdev) +{ + int ret; + + fsl_sgt1500_card.dev = &pdev->dev; + + ret = fsl_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(&fsl_sgt1500_card); + if (ret) { + dev_err(&pdev->dev, "register soc sound card failed :%d\n", + ret); + return ret; + } + + return 0; +} + +static int fsl_sgtl5000_remove(struct platform_device *pdev) +{ + snd_soc_unregister_card(&fsl_sgt1500_card); + + return 0; +} + +static const struct of_device_id fsl_sgtl5000_dt_ids[] = { + { .compatible = "fsl,vf610-sgtl5000", }, + { /* sentinel */ } +}; +MODULE_DEVICE_TABLE(of, fsl_sgtl5000_dt_ids); + +static struct platform_driver fsl_sgtl5000_driver = { + .driver = { + .name = "fsl-sgtl5000", + .owner = THIS_MODULE, + .of_match_table = fsl_sgtl5000_dt_ids, + }, + .probe = fsl_sgtl5000_probe, + .remove = fsl_sgtl5000_remove, +}; +module_platform_driver(fsl_sgtl5000_driver); + +MODULE_AUTHOR("Xiubo Li Li.Xiubo@freescale.com"); +MODULE_DESCRIPTION("Freescale SGTL5000 ASoC driver"); +MODULE_LICENSE("GPL");