linux_dsm_epyc7002/sound/soc/samsung/snow.c
Linus Torvalds e6b5be2be4 Driver core patches for 3.19-rc1
Here's the set of driver core patches for 3.19-rc1.
 
 They are dominated by the removal of the .owner field in platform
 drivers.  They touch a lot of files, but they are "simple" changes, just
 removing a line in a structure.
 
 Other than that, a few minor driver core and debugfs changes.  There are
 some ath9k patches coming in through this tree that have been acked by
 the wireless maintainers as they relied on the debugfs changes.
 
 Everything has been in linux-next for a while.
 
 Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'driver-core-3.19-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core

Pull driver core update from Greg KH:
 "Here's the set of driver core patches for 3.19-rc1.

  They are dominated by the removal of the .owner field in platform
  drivers.  They touch a lot of files, but they are "simple" changes,
  just removing a line in a structure.

  Other than that, a few minor driver core and debugfs changes.  There
  are some ath9k patches coming in through this tree that have been
  acked by the wireless maintainers as they relied on the debugfs
  changes.

  Everything has been in linux-next for a while"

* tag 'driver-core-3.19-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core: (324 commits)
  Revert "ath: ath9k: use debugfs_create_devm_seqfile() helper for seq_file entries"
  fs: debugfs: add forward declaration for struct device type
  firmware class: Deletion of an unnecessary check before the function call "vunmap"
  firmware loader: fix hung task warning dump
  devcoredump: provide a one-way disable function
  device: Add dev_<level>_once variants
  ath: ath9k: use debugfs_create_devm_seqfile() helper for seq_file entries
  ath: use seq_file api for ath9k debugfs files
  debugfs: add helper function to create device related seq_file
  drivers/base: cacheinfo: remove noisy error boot message
  Revert "core: platform: add warning if driver has no owner"
  drivers: base: support cpu cache information interface to userspace via sysfs
  drivers: base: add cpu_device_create to support per-cpu devices
  topology: replace custom attribute macros with standard DEVICE_ATTR*
  cpumask: factor out show_cpumap into separate helper function
  driver core: Fix unbalanced device reference in drivers_probe
  driver core: fix race with userland in device_add()
  sysfs/kernfs: make read requests on pre-alloc files use the buffer.
  sysfs/kernfs: allow attributes to request write buffer be pre-allocated.
  fs: sysfs: return EGBIG on write if offset is larger than file size
  ...
2014-12-14 16:10:09 -08:00

128 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",
.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");