mirror of
https://github.com/edk2-porting/linux-next.git
synced 2024-12-29 07:34:06 +08:00
54d8697fa5
Set the card owner field to prevent the module from being removed from underneath its users. Signed-off-by: Axel Lin <axel.lin@ingics.com> Signed-off-by: Mark Brown <broonie@kernel.org>
129 lines
3.1 KiB
C
129 lines
3.1 KiB
C
/*
|
|
* ASoC machine driver for Snow boards
|
|
*
|
|
* 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/module.h>
|
|
#include <linux/platform_device.h>
|
|
#include <linux/of.h>
|
|
#include <linux/of_device.h>
|
|
|
|
#include <sound/soc.h>
|
|
|
|
#include "i2s.h"
|
|
|
|
#define FIN_PLL_RATE 24000000
|
|
|
|
static struct snd_soc_dai_link snow_dai[] = {
|
|
{
|
|
.name = "Primary",
|
|
.stream_name = "Primary",
|
|
.codec_dai_name = "HiFi",
|
|
.dai_fmt = SND_SOC_DAIFMT_I2S |
|
|
SND_SOC_DAIFMT_NB_NF |
|
|
SND_SOC_DAIFMT_CBS_CFS,
|
|
},
|
|
};
|
|
|
|
static int snow_late_probe(struct snd_soc_card *card)
|
|
{
|
|
struct snd_soc_dai *codec_dai = card->rtd[0].codec_dai;
|
|
struct snd_soc_dai *cpu_dai = card->rtd[0].cpu_dai;
|
|
int ret;
|
|
|
|
/* Set the MCLK rate for the codec */
|
|
ret = snd_soc_dai_set_sysclk(codec_dai, 0,
|
|
FIN_PLL_RATE, SND_SOC_CLOCK_IN);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
/* Select I2S Bus clock to set RCLK and BCLK */
|
|
ret = snd_soc_dai_set_sysclk(cpu_dai, SAMSUNG_I2S_RCLKSRC_0,
|
|
0, SND_SOC_CLOCK_IN);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static struct snd_soc_card snow_snd = {
|
|
.name = "Snow-I2S",
|
|
.owner = THIS_MODULE,
|
|
.dai_link = snow_dai,
|
|
.num_links = ARRAY_SIZE(snow_dai),
|
|
|
|
.late_probe = snow_late_probe,
|
|
};
|
|
|
|
static int snow_probe(struct platform_device *pdev)
|
|
{
|
|
struct snd_soc_card *card = &snow_snd;
|
|
struct device_node *i2s_node, *codec_node;
|
|
int i, ret;
|
|
|
|
i2s_node = of_parse_phandle(pdev->dev.of_node,
|
|
"samsung,i2s-controller", 0);
|
|
if (!i2s_node) {
|
|
dev_err(&pdev->dev,
|
|
"Property 'i2s-controller' missing or invalid\n");
|
|
return -EINVAL;
|
|
}
|
|
|
|
codec_node = of_parse_phandle(pdev->dev.of_node,
|
|
"samsung,audio-codec", 0);
|
|
if (!codec_node) {
|
|
dev_err(&pdev->dev,
|
|
"Property 'audio-codec' missing or invalid\n");
|
|
return -EINVAL;
|
|
}
|
|
|
|
for (i = 0; i < ARRAY_SIZE(snow_dai); i++) {
|
|
snow_dai[i].codec_of_node = codec_node;
|
|
snow_dai[i].cpu_of_node = i2s_node;
|
|
snow_dai[i].platform_of_node = i2s_node;
|
|
}
|
|
|
|
card->dev = &pdev->dev;
|
|
|
|
/* Update card-name if provided through DT, else use default name */
|
|
snd_soc_of_parse_card_name(card, "samsung,model");
|
|
|
|
ret = devm_snd_soc_register_card(&pdev->dev, card);
|
|
if (ret) {
|
|
dev_err(&pdev->dev, "snd_soc_register_card failed (%d)\n", ret);
|
|
return ret;
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
static const struct of_device_id snow_of_match[] = {
|
|
{ .compatible = "google,snow-audio-max98090", },
|
|
{ .compatible = "google,snow-audio-max98091", },
|
|
{ .compatible = "google,snow-audio-max98095", },
|
|
{},
|
|
};
|
|
MODULE_DEVICE_TABLE(of, snow_of_match);
|
|
|
|
static struct platform_driver snow_driver = {
|
|
.driver = {
|
|
.name = "snow-audio",
|
|
.pm = &snd_soc_pm_ops,
|
|
.of_match_table = snow_of_match,
|
|
},
|
|
.probe = snow_probe,
|
|
};
|
|
|
|
module_platform_driver(snow_driver);
|
|
|
|
MODULE_DESCRIPTION("ALSA SoC Audio machine driver for Snow");
|
|
MODULE_LICENSE("GPL");
|