diff options
Diffstat (limited to 'sound/soc/bcm/i-sabre-q2m.c')
| -rw-r--r-- | sound/soc/bcm/i-sabre-q2m.c | 158 |
1 files changed, 158 insertions, 0 deletions
diff --git a/sound/soc/bcm/i-sabre-q2m.c b/sound/soc/bcm/i-sabre-q2m.c new file mode 100644 index 000000000000..3ee6ca48cce4 --- /dev/null +++ b/sound/soc/bcm/i-sabre-q2m.c @@ -0,0 +1,158 @@ +/* + * ASoC Driver for I-Sabre Q2M + * + * Author: Satoru Kawase + * Modified by: Xiao Qingyong + * Update kernel v4.18+ by : Audiophonics + * Copyright 2018 Audiophonics + * + * 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. + */ + +#include <linux/kernel.h> +#include <linux/init.h> +#include <linux/module.h> +#include <linux/delay.h> +#include <linux/fs.h> +#include <asm/uaccess.h> +#include <sound/core.h> +#include <sound/soc.h> +#include <sound/pcm.h> +#include <sound/pcm_params.h> + +#include "../codecs/i-sabre-codec.h" + + +static int snd_rpi_i_sabre_q2m_init(struct snd_soc_pcm_runtime *rtd) +{ + struct snd_soc_component *component = asoc_rtd_to_codec(rtd, 0)->component; + unsigned int value; + + /* Device ID */ + value = snd_soc_component_read32(component, ISABRECODEC_REG_01); + dev_info(component->card->dev, "Audiophonics Device ID : %02X\n", value); + + /* API revision */ + value = snd_soc_component_read32(component, ISABRECODEC_REG_02); + dev_info(component->card->dev, "Audiophonics API revision : %02X\n", value); + + return 0; +} + +static int snd_rpi_i_sabre_q2m_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 *cpu_dai = asoc_rtd_to_cpu(rtd, 0); + int bclk_ratio; + + bclk_ratio = snd_pcm_format_physical_width( + params_format(params)) * params_channels(params); + return snd_soc_dai_set_bclk_ratio(cpu_dai, bclk_ratio); +} + +/* machine stream operations */ +static struct snd_soc_ops snd_rpi_i_sabre_q2m_ops = { + .hw_params = snd_rpi_i_sabre_q2m_hw_params, +}; + +SND_SOC_DAILINK_DEFS(rpi_i_sabre_q2m, + DAILINK_COMP_ARRAY(COMP_CPU("bcm2708-i2s.0")), + DAILINK_COMP_ARRAY(COMP_CODEC("i-sabre-codec-i2c.1-0048", "i-sabre-codec-dai")), + DAILINK_COMP_ARRAY(COMP_PLATFORM("bcm2708-i2s.0"))); + +static struct snd_soc_dai_link snd_rpi_i_sabre_q2m_dai[] = { + { + .name = "I-Sabre Q2M", + .stream_name = "I-Sabre Q2M DAC", + .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF + | SND_SOC_DAIFMT_CBS_CFS, + .init = snd_rpi_i_sabre_q2m_init, + .ops = &snd_rpi_i_sabre_q2m_ops, + SND_SOC_DAILINK_REG(rpi_i_sabre_q2m), + } +}; + +/* audio machine driver */ +static struct snd_soc_card snd_rpi_i_sabre_q2m = { + .name = "I-Sabre Q2M DAC", + .owner = THIS_MODULE, + .dai_link = snd_rpi_i_sabre_q2m_dai, + .num_links = ARRAY_SIZE(snd_rpi_i_sabre_q2m_dai) +}; + + +static int snd_rpi_i_sabre_q2m_probe(struct platform_device *pdev) +{ + int ret = 0; + + snd_rpi_i_sabre_q2m.dev = &pdev->dev; + if (pdev->dev.of_node) { + struct device_node *i2s_node; + struct snd_soc_dai_link *dai; + + dai = &snd_rpi_i_sabre_q2m_dai[0]; + i2s_node = of_parse_phandle(pdev->dev.of_node, + "i2s-controller", 0); + if (i2s_node) { + dai->cpus->dai_name = NULL; + dai->cpus->of_node = i2s_node; + dai->platforms->name = NULL; + dai->platforms->of_node = i2s_node; + } else { + dev_err(&pdev->dev, + "Property 'i2s-controller' missing or invalid\n"); + return (-EINVAL); + } + + dai->name = "I-Sabre Q2M"; + dai->stream_name = "I-Sabre Q2M DAC"; + dai->dai_fmt = SND_SOC_DAIFMT_I2S + | SND_SOC_DAIFMT_NB_NF + | SND_SOC_DAIFMT_CBS_CFS; + } + + /* Wait for registering codec driver */ + mdelay(50); + + ret = snd_soc_register_card(&snd_rpi_i_sabre_q2m); + if (ret) { + dev_err(&pdev->dev, + "snd_soc_register_card() failed: %d\n", ret); + } + + return ret; +} + +static int snd_rpi_i_sabre_q2m_remove(struct platform_device *pdev) +{ + return snd_soc_unregister_card(&snd_rpi_i_sabre_q2m); +} + +static const struct of_device_id snd_rpi_i_sabre_q2m_of_match[] = { + { .compatible = "audiophonics,i-sabre-q2m", }, + {} +}; +MODULE_DEVICE_TABLE(of, snd_rpi_i_sabre_q2m_of_match); + +static struct platform_driver snd_rpi_i_sabre_q2m_driver = { + .driver = { + .name = "snd-rpi-i-sabre-q2m", + .owner = THIS_MODULE, + .of_match_table = snd_rpi_i_sabre_q2m_of_match, + }, + .probe = snd_rpi_i_sabre_q2m_probe, + .remove = snd_rpi_i_sabre_q2m_remove, +}; +module_platform_driver(snd_rpi_i_sabre_q2m_driver); + +MODULE_DESCRIPTION("ASoC Driver for I-Sabre Q2M"); +MODULE_AUTHOR("Audiophonics <http://www.audiophonics.fr>"); +MODULE_LICENSE("GPL"); |