linux/sound/soc/atmel/atmel_wm8904.c
Rob Herring 340d79a14d
ASoC: Explicitly include correct DT includes
The DT of_device.h and of_platform.h date back to the separate
of_platform_bus_type before it was merged into the regular platform bus.
As part of that merge prepping Arm DT support 13 years ago, they
"temporarily" include each other. They also include platform_device.h
and of.h. As a result, there's a pretty much random mix of those include
files used throughout the tree. In order to detangle these headers and
replace the implicit includes with struct declarations, users need to
explicitly include the correct includes.

Acked-by: Jernej Skrabec <jernej.skrabec@gmail.com>
Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Acked-by: Charles Keepax <ckeepax@opensource.cirrus.com>
Reviewed-by: Claudiu Beznea <claudiu.beznea@tuxon.dev> # for at91
Signed-off-by: Rob Herring <robh@kernel.org>
Link: https://lore.kernel.org/r/20231006-dt-asoc-header-cleanups-v3-1-13a4f0f7fee6@kernel.org
Signed-off-by: Mark Brown <broonie@kernel.org>
2023-10-09 13:13:56 +01:00

199 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 <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 = snd_soc_substream_to_rtd(substream);
struct snd_soc_dai *codec_dai = snd_soc_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_CBP_CFP,
.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 void 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);
}
#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_new = 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");