mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-12-28 11:18:45 +07:00
fe4cb86cde
When CONFIG_PM_SLEEP is disabled, SIMPLE_DEV_PM_OPS does not use
snd_cs5535audio_resume and snd_cs5535audio_suspend functions:
sound/pci/cs5535audio/cs5535audio_pm.c:77:12: warning: ‘snd_cs5535audio_resume’ defined but not used [-Wunused-function]
static int snd_cs5535audio_resume(struct device *dev)
^~~~~~~~~~~~~~~~~~~~~~
sound/pci/cs5535audio/cs5535audio_pm.c:58:12: warning: ‘snd_cs5535audio_suspend’ defined but not used [-Wunused-function]
static int snd_cs5535audio_suspend(struct device *dev)
^~~~~~~~~~~~~~~~~~~~~~~
Adding __maybe_unused to the declaration of these functions removes the
warnings.
Signed-off-by: Jérémy Lefaure <jeremy.lefaure@lse.epita.fr>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
116 lines
3.5 KiB
C
116 lines
3.5 KiB
C
/*
|
|
* Power management for audio on multifunction CS5535 companion device
|
|
* Copyright (C) Jaya Kumar
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License as published by
|
|
* the Free Software Foundation; either version 2 of the License, or
|
|
* (at your option) any later version.
|
|
*
|
|
* 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.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program; if not, write to the Free Software
|
|
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
|
|
*
|
|
*/
|
|
|
|
#include <linux/init.h>
|
|
#include <linux/pci.h>
|
|
#include <linux/delay.h>
|
|
#include <sound/core.h>
|
|
#include <sound/control.h>
|
|
#include <sound/initval.h>
|
|
#include <sound/asoundef.h>
|
|
#include <sound/pcm.h>
|
|
#include <sound/ac97_codec.h>
|
|
#include "cs5535audio.h"
|
|
|
|
static void snd_cs5535audio_stop_hardware(struct cs5535audio *cs5535au)
|
|
{
|
|
/*
|
|
we depend on snd_ac97_suspend to tell the
|
|
AC97 codec to shutdown. the amd spec suggests
|
|
that the LNK_SHUTDOWN be done at the same time
|
|
that the codec power-down is issued. instead,
|
|
we do it just after rather than at the same
|
|
time. excluding codec specific build_ops->suspend
|
|
ac97 powerdown hits:
|
|
0x8000 EAPD
|
|
0x4000 Headphone amplifier
|
|
0x0300 ADC & DAC
|
|
0x0400 Analog Mixer powerdown (Vref on)
|
|
I am not sure if this is the best that we can do.
|
|
The remainder to be investigated are:
|
|
- analog mixer (vref off) 0x0800
|
|
- AC-link powerdown 0x1000
|
|
- codec internal clock 0x2000
|
|
*/
|
|
|
|
/* set LNK_SHUTDOWN to shutdown AC link */
|
|
cs_writel(cs5535au, ACC_CODEC_CNTL, ACC_CODEC_CNTL_LNK_SHUTDOWN);
|
|
|
|
}
|
|
|
|
static int __maybe_unused snd_cs5535audio_suspend(struct device *dev)
|
|
{
|
|
struct snd_card *card = dev_get_drvdata(dev);
|
|
struct cs5535audio *cs5535au = card->private_data;
|
|
int i;
|
|
|
|
snd_power_change_state(card, SNDRV_CTL_POWER_D3hot);
|
|
snd_pcm_suspend_all(cs5535au->pcm);
|
|
snd_ac97_suspend(cs5535au->ac97);
|
|
for (i = 0; i < NUM_CS5535AUDIO_DMAS; i++) {
|
|
struct cs5535audio_dma *dma = &cs5535au->dmas[i];
|
|
if (dma && dma->substream)
|
|
dma->saved_prd = dma->ops->read_prd(cs5535au);
|
|
}
|
|
/* save important regs, then disable aclink in hw */
|
|
snd_cs5535audio_stop_hardware(cs5535au);
|
|
return 0;
|
|
}
|
|
|
|
static int __maybe_unused snd_cs5535audio_resume(struct device *dev)
|
|
{
|
|
struct snd_card *card = dev_get_drvdata(dev);
|
|
struct cs5535audio *cs5535au = card->private_data;
|
|
u32 tmp;
|
|
int timeout;
|
|
int i;
|
|
|
|
/* set LNK_WRM_RST to reset AC link */
|
|
cs_writel(cs5535au, ACC_CODEC_CNTL, ACC_CODEC_CNTL_LNK_WRM_RST);
|
|
|
|
timeout = 50;
|
|
do {
|
|
tmp = cs_readl(cs5535au, ACC_CODEC_STATUS);
|
|
if (tmp & PRM_RDY_STS)
|
|
break;
|
|
udelay(1);
|
|
} while (--timeout);
|
|
|
|
if (!timeout)
|
|
dev_err(cs5535au->card->dev, "Failure getting AC Link ready\n");
|
|
|
|
/* set up rate regs, dma. actual initiation is done in trig */
|
|
for (i = 0; i < NUM_CS5535AUDIO_DMAS; i++) {
|
|
struct cs5535audio_dma *dma = &cs5535au->dmas[i];
|
|
if (dma && dma->substream) {
|
|
dma->substream->ops->prepare(dma->substream);
|
|
dma->ops->setup_prd(cs5535au, dma->saved_prd);
|
|
}
|
|
}
|
|
|
|
/* we depend on ac97 to perform the codec power up */
|
|
snd_ac97_resume(cs5535au->ac97);
|
|
snd_power_change_state(card, SNDRV_CTL_POWER_D0);
|
|
|
|
return 0;
|
|
}
|
|
|
|
SIMPLE_DEV_PM_OPS(snd_cs5535audio_pm, snd_cs5535audio_suspend, snd_cs5535audio_resume);
|