mirror of
https://mirrors.bfsu.edu.cn/git/linux.git
synced 2024-12-05 18:14:07 +08:00
b1839ebf13
Now we can use asoc_substream_to_rtd() macro, let's use it. Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com> Link: https://lore.kernel.org/r/87blkb0ytd.wl-kuninori.morimoto.gx@renesas.com Signed-off-by: Mark Brown <broonie@kernel.org>
202 lines
5.0 KiB
C
202 lines
5.0 KiB
C
// SPDX-License-Identifier: GPL-2.0-or-later
|
|
/*
|
|
* atmel_wm8904 - Atmel ASoC driver for boards with WM8904 codec.
|
|
*
|
|
* Copyright (C) 2012 Atmel
|
|
*
|
|
* Author: Bo Shen <voice.shen@atmel.com>
|
|
*/
|
|
|
|
#include <linux/clk.h>
|
|
#include <linux/module.h>
|
|
#include <linux/of.h>
|
|
#include <linux/of_device.h>
|
|
|
|
#include <sound/soc.h>
|
|
|
|
#include "../codecs/wm8904.h"
|
|
#include "atmel_ssc_dai.h"
|
|
|
|
static const struct snd_soc_dapm_widget atmel_asoc_wm8904_dapm_widgets[] = {
|
|
SND_SOC_DAPM_HP("Headphone Jack", NULL),
|
|
SND_SOC_DAPM_MIC("Mic", NULL),
|
|
SND_SOC_DAPM_LINE("Line In Jack", NULL),
|
|
};
|
|
|
|
static int atmel_asoc_wm8904_hw_params(struct snd_pcm_substream *substream,
|
|
struct snd_pcm_hw_params *params)
|
|
{
|
|
struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream);
|
|
struct snd_soc_dai *codec_dai = asoc_rtd_to_codec(rtd, 0);
|
|
int ret;
|
|
|
|
ret = snd_soc_dai_set_pll(codec_dai, WM8904_FLL_MCLK, WM8904_FLL_MCLK,
|
|
32768, params_rate(params) * 256);
|
|
if (ret < 0) {
|
|
pr_err("%s - failed to set wm8904 codec PLL.", __func__);
|
|
return ret;
|
|
}
|
|
|
|
/*
|
|
* As here wm8904 use FLL output as its system clock
|
|
* so calling set_sysclk won't care freq parameter
|
|
* then we pass 0
|
|
*/
|
|
ret = snd_soc_dai_set_sysclk(codec_dai, WM8904_CLK_FLL,
|
|
0, SND_SOC_CLOCK_IN);
|
|
if (ret < 0) {
|
|
pr_err("%s -failed to set wm8904 SYSCLK\n", __func__);
|
|
return ret;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static const struct snd_soc_ops atmel_asoc_wm8904_ops = {
|
|
.hw_params = atmel_asoc_wm8904_hw_params,
|
|
};
|
|
|
|
SND_SOC_DAILINK_DEFS(pcm,
|
|
DAILINK_COMP_ARRAY(COMP_EMPTY()),
|
|
DAILINK_COMP_ARRAY(COMP_CODEC(NULL, "wm8904-hifi")),
|
|
DAILINK_COMP_ARRAY(COMP_EMPTY()));
|
|
|
|
static struct snd_soc_dai_link atmel_asoc_wm8904_dailink = {
|
|
.name = "WM8904",
|
|
.stream_name = "WM8904 PCM",
|
|
.dai_fmt = SND_SOC_DAIFMT_I2S
|
|
| SND_SOC_DAIFMT_NB_NF
|
|
| SND_SOC_DAIFMT_CBM_CFM,
|
|
.ops = &atmel_asoc_wm8904_ops,
|
|
SND_SOC_DAILINK_REG(pcm),
|
|
};
|
|
|
|
static struct snd_soc_card atmel_asoc_wm8904_card = {
|
|
.name = "atmel_asoc_wm8904",
|
|
.owner = THIS_MODULE,
|
|
.dai_link = &atmel_asoc_wm8904_dailink,
|
|
.num_links = 1,
|
|
.dapm_widgets = atmel_asoc_wm8904_dapm_widgets,
|
|
.num_dapm_widgets = ARRAY_SIZE(atmel_asoc_wm8904_dapm_widgets),
|
|
.fully_routed = true,
|
|
};
|
|
|
|
static int atmel_asoc_wm8904_dt_init(struct platform_device *pdev)
|
|
{
|
|
struct device_node *np = pdev->dev.of_node;
|
|
struct device_node *codec_np, *cpu_np;
|
|
struct snd_soc_card *card = &atmel_asoc_wm8904_card;
|
|
struct snd_soc_dai_link *dailink = &atmel_asoc_wm8904_dailink;
|
|
int ret;
|
|
|
|
if (!np) {
|
|
dev_err(&pdev->dev, "only device tree supported\n");
|
|
return -EINVAL;
|
|
}
|
|
|
|
ret = snd_soc_of_parse_card_name(card, "atmel,model");
|
|
if (ret) {
|
|
dev_err(&pdev->dev, "failed to parse card name\n");
|
|
return ret;
|
|
}
|
|
|
|
ret = snd_soc_of_parse_audio_routing(card, "atmel,audio-routing");
|
|
if (ret) {
|
|
dev_err(&pdev->dev, "failed to parse audio routing\n");
|
|
return ret;
|
|
}
|
|
|
|
cpu_np = of_parse_phandle(np, "atmel,ssc-controller", 0);
|
|
if (!cpu_np) {
|
|
dev_err(&pdev->dev, "failed to get dai and pcm info\n");
|
|
ret = -EINVAL;
|
|
return ret;
|
|
}
|
|
dailink->cpus->of_node = cpu_np;
|
|
dailink->platforms->of_node = cpu_np;
|
|
of_node_put(cpu_np);
|
|
|
|
codec_np = of_parse_phandle(np, "atmel,audio-codec", 0);
|
|
if (!codec_np) {
|
|
dev_err(&pdev->dev, "failed to get codec info\n");
|
|
ret = -EINVAL;
|
|
return ret;
|
|
}
|
|
dailink->codecs->of_node = codec_np;
|
|
of_node_put(codec_np);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int atmel_asoc_wm8904_probe(struct platform_device *pdev)
|
|
{
|
|
struct snd_soc_card *card = &atmel_asoc_wm8904_card;
|
|
struct snd_soc_dai_link *dailink = &atmel_asoc_wm8904_dailink;
|
|
int id, ret;
|
|
|
|
card->dev = &pdev->dev;
|
|
ret = atmel_asoc_wm8904_dt_init(pdev);
|
|
if (ret) {
|
|
dev_err(&pdev->dev, "failed to init dt info\n");
|
|
return ret;
|
|
}
|
|
|
|
id = of_alias_get_id((struct device_node *)dailink->cpus->of_node, "ssc");
|
|
ret = atmel_ssc_set_audio(id);
|
|
if (ret != 0) {
|
|
dev_err(&pdev->dev, "failed to set SSC %d for audio\n", id);
|
|
return ret;
|
|
}
|
|
|
|
ret = snd_soc_register_card(card);
|
|
if (ret) {
|
|
dev_err(&pdev->dev, "snd_soc_register_card failed\n");
|
|
goto err_set_audio;
|
|
}
|
|
|
|
return 0;
|
|
|
|
err_set_audio:
|
|
atmel_ssc_put_audio(id);
|
|
return ret;
|
|
}
|
|
|
|
static int atmel_asoc_wm8904_remove(struct platform_device *pdev)
|
|
{
|
|
struct snd_soc_card *card = platform_get_drvdata(pdev);
|
|
struct snd_soc_dai_link *dailink = &atmel_asoc_wm8904_dailink;
|
|
int id;
|
|
|
|
id = of_alias_get_id((struct device_node *)dailink->cpus->of_node, "ssc");
|
|
|
|
snd_soc_unregister_card(card);
|
|
atmel_ssc_put_audio(id);
|
|
|
|
return 0;
|
|
}
|
|
|
|
#ifdef CONFIG_OF
|
|
static const struct of_device_id atmel_asoc_wm8904_dt_ids[] = {
|
|
{ .compatible = "atmel,asoc-wm8904", },
|
|
{ }
|
|
};
|
|
MODULE_DEVICE_TABLE(of, atmel_asoc_wm8904_dt_ids);
|
|
#endif
|
|
|
|
static struct platform_driver atmel_asoc_wm8904_driver = {
|
|
.driver = {
|
|
.name = "atmel-wm8904-audio",
|
|
.of_match_table = of_match_ptr(atmel_asoc_wm8904_dt_ids),
|
|
.pm = &snd_soc_pm_ops,
|
|
},
|
|
.probe = atmel_asoc_wm8904_probe,
|
|
.remove = atmel_asoc_wm8904_remove,
|
|
};
|
|
|
|
module_platform_driver(atmel_asoc_wm8904_driver);
|
|
|
|
/* Module information */
|
|
MODULE_AUTHOR("Bo Shen <voice.shen@atmel.com>");
|
|
MODULE_DESCRIPTION("ALSA SoC machine driver for Atmel EK with WM8904 codec");
|
|
MODULE_LICENSE("GPL");
|