diff options
Diffstat (limited to 'sound/soc/fsl/imx-xtor.c')
| -rw-r--r-- | sound/soc/fsl/imx-xtor.c | 318 |
1 files changed, 318 insertions, 0 deletions
diff --git a/sound/soc/fsl/imx-xtor.c b/sound/soc/fsl/imx-xtor.c new file mode 100644 index 000000000000..39e3a8e87fb2 --- /dev/null +++ b/sound/soc/fsl/imx-xtor.c @@ -0,0 +1,318 @@ +/* + * Copyright (C) 2015-2016 Freescale Semiconductor, Inc. + * Copyright 2017 NXP + * + * 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: + * + * http://www.opensource.org/licenses/gpl-license.html + * http://www.gnu.org/copyleft/gpl.html + */ + +#include <linux/module.h> +#include <linux/of_platform.h> +#include <linux/i2c.h> +#include <linux/of_gpio.h> +#include <linux/slab.h> +#include <linux/gpio.h> +#include <linux/clk.h> +#include <sound/soc.h> +#include <sound/jack.h> +#include <sound/control.h> +#include <sound/pcm_params.h> +#include <sound/soc-dapm.h> +#include <linux/pinctrl/consumer.h> +#include "fsl_sai.h" +#include "fsl_esai.h" + +#define RX 0 +#define TX 1 + +/** + * CPU private data + * + * @sysclk_id[2]: SYSCLK ids for set_sysclk() + * @slots: number of slots supported by DAI + * + * Note: [0] for rx and [1] for tx + */ +struct cpu_priv { + u32 sysclk_id[2]; + u32 slots; +}; + +struct imx_xtor_data { + struct snd_soc_dai_link dai[3]; + struct snd_soc_card card; + struct cpu_priv cpu_priv; + bool is_stream_opened[2]; + struct platform_device *asrc_pdev; + u32 asrc_rate; + u32 asrc_format; +}; + +static int imx_xtor_startup(struct snd_pcm_substream *substream) +{ + struct snd_pcm_runtime *runtime = substream->runtime; + static struct snd_pcm_hw_constraint_list constraint_rates; + int ret; + static u32 support_rates[] = { 8000, 32000, 48000, 96000, 192000, }; + + constraint_rates.list = support_rates; + constraint_rates.count = ARRAY_SIZE(support_rates); + + ret = snd_pcm_hw_constraint_list(runtime, 0, SNDRV_PCM_HW_PARAM_RATE, + &constraint_rates); + if (ret) + return ret; + + return 0; +} + +static int imx_xtor_hw_params(struct snd_pcm_substream *substream, + struct snd_pcm_hw_params *params) +{ + struct snd_soc_pcm_runtime *rtd = substream->private_data; + struct imx_xtor_data *data = snd_soc_card_get_drvdata(rtd->card); + bool tx = substream->stream == SNDRV_PCM_STREAM_PLAYBACK; + struct cpu_priv *cpu_priv = &data->cpu_priv; + struct device *dev = rtd->card->dev; + u32 channels = params_channels(params); + unsigned int fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF; + int ret, dir; + + /* For playback the XTOR is slave, and for record is master */ + fmt |= tx ? SND_SOC_DAIFMT_CBS_CFS : SND_SOC_DAIFMT_CBM_CFM; + dir = tx ? SND_SOC_CLOCK_OUT : SND_SOC_CLOCK_IN; + + /* set cpu DAI configuration */ + ret = snd_soc_dai_set_fmt(rtd->cpu_dai, fmt); + if (ret) { + dev_err(dev, "failed to set cpu dai fmt: %d\n", ret); + return ret; + } + + /* Specific configurations of DAIs starts from here */ + ret = snd_soc_dai_set_sysclk(rtd->cpu_dai, cpu_priv->sysclk_id[tx], + 0, dir); + if (ret) { + dev_err(dev, "failed to set cpu sysclk: %d\n", ret); + return ret; + } + + ret = snd_soc_dai_set_tdm_slot(rtd->cpu_dai, BIT(channels) - 1, + BIT(channels) - 1, cpu_priv->slots, params_width(params)); + if (ret) { + dev_err(dev, "failed to set cpu dai tdm slot: %d\n", ret); + return ret; + } + + return 0; +} + +static int imx_xtor_hw_free(struct snd_pcm_substream *substream) +{ + return 0; +} + +static void imx_xtor_shutdown(struct snd_pcm_substream *substream) +{ + struct snd_soc_pcm_runtime *rtd = substream->private_data; + struct snd_soc_card *card = rtd->card; + struct imx_xtor_data *data = snd_soc_card_get_drvdata(card); + bool tx = substream->stream == SNDRV_PCM_STREAM_PLAYBACK; + + data->is_stream_opened[tx] = false; +} + +static int be_hw_params_fixup(struct snd_soc_pcm_runtime *rtd, + struct snd_pcm_hw_params *params) +{ + struct snd_soc_card *card = rtd->card; + struct imx_xtor_data *data = snd_soc_card_get_drvdata(card); + struct snd_interval *rate; + struct snd_mask *mask; + + if (!data->asrc_pdev) + return -EINVAL; + + rate = hw_param_interval(params, SNDRV_PCM_HW_PARAM_RATE); + rate->max = rate->min = data->asrc_rate; + + mask = hw_param_mask(params, SNDRV_PCM_HW_PARAM_FORMAT); + snd_mask_none(mask); + snd_mask_set(mask, data->asrc_format); + + return 0; +} + +static const struct snd_soc_dapm_route audio_map[] = { + {"Playback", NULL, "CPU-Playback"}, + {"CPU-Capture", NULL, "Capture"}, + {"CPU-Playback", NULL, "ASRC-Playback"}, + {"ASRC-Capture", NULL, "CPU-Capture"}, +}; + +static struct snd_soc_ops imx_xtor_ops = { + .startup = imx_xtor_startup, + .shutdown = imx_xtor_shutdown, + .hw_params = imx_xtor_hw_params, + .hw_free = imx_xtor_hw_free, +}; + +static struct snd_soc_ops imx_xtor_be_ops = { + .hw_params = imx_xtor_hw_params, + .hw_free = imx_xtor_hw_free, +}; + +static int imx_xtor_probe(struct platform_device *pdev) +{ + struct device_node *cpu_np, *xtor_np = NULL; + struct device_node *asrc_np = NULL; + struct platform_device *asrc_pdev = NULL; + struct platform_device *cpu_pdev; + struct imx_xtor_data *data; + int ret; + u32 width; + + cpu_np = of_parse_phandle(pdev->dev.of_node, "cpu-dai", 0); + if (!cpu_np) { + dev_err(&pdev->dev, "cpu dai phandle missing or invalid\n"); + ret = -EINVAL; + goto fail; + } + + data = devm_kzalloc(&pdev->dev, sizeof(*data), GFP_KERNEL); + if (!data) { + ret = -ENOMEM; + goto fail; + } + + asrc_np = of_parse_phandle(pdev->dev.of_node, "asrc-controller", 0); + if (asrc_np) { + asrc_pdev = of_find_device_by_node(asrc_np); + data->asrc_pdev = asrc_pdev; + } + + cpu_pdev = of_find_device_by_node(cpu_np); + if (!cpu_pdev) { + dev_err(&pdev->dev, "failed to find SAI platform device\n"); + ret = -EINVAL; + goto fail; + } + + if (strstr(cpu_np->name, "esai")) { + data->cpu_priv.sysclk_id[TX] = ESAI_HCKT_EXTAL; + data->cpu_priv.sysclk_id[RX] = ESAI_HCKR_EXTAL; + } else if (strstr(cpu_np->name, "sai")) { + data->cpu_priv.sysclk_id[TX] = FSL_SAI_CLK_MAST1; + data->cpu_priv.sysclk_id[RX] = FSL_SAI_CLK_MAST1; + } + data->cpu_priv.slots = 2; + + data->dai[0].name = "xtor hifi"; + data->dai[0].stream_name = "xtor hifi"; + data->dai[0].codec_dai_name = "snd-soc-dummy-dai"; + data->dai[0].codec_name = "snd-soc-dummy"; + data->dai[0].cpu_dai_name = dev_name(&cpu_pdev->dev); + data->dai[0].platform_of_node = cpu_np; + data->dai[0].ops = &imx_xtor_ops; + data->dai[0].playback_only = false; + data->dai[0].capture_only = false; + data->card.num_links = 1; + data->card.dai_link = data->dai; + data->card.dapm_routes = audio_map; + data->card.num_dapm_routes = 2; + + /*if there is no asrc controller, we only enable one device*/ + if (asrc_pdev) { + data->dai[1].name = "HiFi-ASRC-FE"; + data->dai[1].stream_name = "HiFi-ASRC-FE"; + data->dai[1].codec_dai_name = "snd-soc-dummy-dai"; + data->dai[1].codec_name = "snd-soc-dummy"; + data->dai[1].cpu_of_node = asrc_np; + data->dai[1].platform_of_node = asrc_np; + data->dai[1].dynamic = 1; + data->dai[1].dpcm_playback = 1; + data->dai[1].dpcm_capture = 1; + + data->dai[2].name = "HiFi-ASRC-BE"; + data->dai[2].stream_name = "HiFi-ASRC-BE"; + data->dai[2].codec_dai_name = "snd-soc-dummy-dai"; + data->dai[2].codec_name = "snd-soc-dummy"; + data->dai[2].cpu_of_node = cpu_np; + data->dai[2].platform_name = "snd-soc-dummy"; + data->dai[2].no_pcm = 1; + data->dai[2].dpcm_playback = 1; + data->dai[2].dpcm_capture = 1; + data->dai[2].ops = &imx_xtor_be_ops, + data->dai[2].be_hw_params_fixup = be_hw_params_fixup, + data->card.num_links = 3; + data->card.dai_link = &data->dai[0]; + data->card.num_dapm_routes += 2; + + ret = of_property_read_u32(asrc_np, "fsl,asrc-rate", + &data->asrc_rate); + if (ret) { + dev_err(&pdev->dev, "failed to get output rate\n"); + ret = -EINVAL; + goto fail; + } + + ret = of_property_read_u32(asrc_np, "fsl,asrc-width", &width); + if (ret) { + dev_err(&pdev->dev, "failed to get output rate\n"); + ret = -EINVAL; + goto fail; + } + + if (width == 24) + data->asrc_format = SNDRV_PCM_FORMAT_S24_LE; + else + data->asrc_format = SNDRV_PCM_FORMAT_S16_LE; + } + + data->card.dev = &pdev->dev; + data->card.owner = THIS_MODULE; + ret = snd_soc_of_parse_card_name(&data->card, "model"); + if (ret) + goto fail; + + platform_set_drvdata(pdev, &data->card); + snd_soc_card_set_drvdata(&data->card, data); + ret = devm_snd_soc_register_card(&pdev->dev, &data->card); + if (ret) { + dev_err(&pdev->dev, "snd_soc_register_card failed (%d)\n", ret); + goto fail; + } + +fail: + if (cpu_np) + of_node_put(cpu_np); + if (xtor_np) + of_node_put(xtor_np); + return ret; +} + +static const struct of_device_id imx_xtor_dt_ids[] = { + { .compatible = "fsl,imx-audio-xtor", }, + { /* sentinel */ } +}; +MODULE_DEVICE_TABLE(of, imx_xtor_dt_ids); + +static struct platform_driver imx_xtor_driver = { + .driver = { + .name = "imx-xtor", + .owner = THIS_MODULE, + .pm = &snd_soc_pm_ops, + .of_match_table = imx_xtor_dt_ids, + }, + .probe = imx_xtor_probe, +}; +module_platform_driver(imx_xtor_driver); + +MODULE_AUTHOR("Freescale Semiconductor, Inc."); +MODULE_DESCRIPTION("Freescale i.MX Dummy audio ASoC machine driver"); +MODULE_LICENSE("GPL v2"); +MODULE_ALIAS("platform:imx-xtor"); |