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[ALSA] PM support for cs5535audio

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Appended is my patch adding PM support to the cs5535audio driver.
I also added the ac97 quirk but it's not yet confirmed which
boards need to be in the quirk list. The patch also includes some
Kconfig and misc cleanup.

Signed-off-by: Jaya Kumar <jayakumar.alsa@gmail.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit is contained in:
Jaya Kumar 2006-04-28 14:34:49 +02:00 committed by Jaroslav Kysela
parent 5e1b1518a5
commit 9ac25594e6
6 changed files with 191 additions and 8 deletions
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9
sound/pci/Kconfig
View file

@ -216,14 +216,19 @@ config SND_CS46XX_NEW_DSP
This works better than the old code, so say Y.
config SND_CS5535AUDIO
tristate "CS5535 Audio"
tristate "CS5535/CS5536 Audio"
depends on SND && X86 && !X86_64
select SND_PCM
select SND_AC97_CODEC
help
Say Y here to include support for audio on CS5535 chips. It is
referred to as NS CS5535 IO or AMD CS5535 IO companion in
various literature.
various literature. This driver also supports the CS5536 audio
device. However, for both chips, on certain boards, you may
need to use ac97_quirk=hp_only if your board has physically
mapped headphone out to master output. If that works for you,
send lspci -vvv output to the mailing list so that your board
can be identified in the quirks list.
To compile this driver as a module, choose M here: the module
will be called snd-cs5535audio.

4
sound/pci/cs5535audio/Makefile
View file

@ -4,5 +4,9 @@
snd-cs5535audio-objs := cs5535audio.o cs5535audio_pcm.o
ifdef CONFIG_PM
snd-cs5535audio-objs += cs5535audio_pm.o
endif
# Toplevel Module Dependency
obj-$(CONFIG_SND_CS5535AUDIO) += snd-cs5535audio.o

31
sound/pci/cs5535audio/cs5535audio.c
View file

@ -1,5 +1,5 @@
/*
* Driver for audio on multifunction CS5535 companion device
* Driver for audio on multifunction CS5535/6 companion device
* Copyright (C) Jaya Kumar
*
* Based on Jaroslav Kysela and Takashi Iwai's examples.
@ -40,16 +40,29 @@
#define DRIVER_NAME "cs5535audio"
static char *ac97_quirk;
module_param(ac97_quirk, charp, 0444);
MODULE_PARM_DESC(ac97_quirk, "AC'97 board specific workarounds.");
static struct ac97_quirk ac97_quirks[] __devinitdata = {
#if 0 /* Not yet confirmed if all 5536 boards are HP only */
{
.subvendor = PCI_VENDOR_ID_AMD,
.subdevice = PCI_DEVICE_ID_AMD_CS5536_AUDIO,
.name = "AMD RDK",
.type = AC97_TUNE_HP_ONLY
},
#endif
{}
};
static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX;
static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR;
static int enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE_PNP;
static struct pci_device_id snd_cs5535audio_ids[] __devinitdata = {
{ PCI_VENDOR_ID_NS, PCI_DEVICE_ID_NS_CS5535_AUDIO,
PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0, },
{ PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_CS5536_AUDIO,
PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0, },
{ PCI_DEVICE(PCI_VENDOR_ID_NS, PCI_DEVICE_ID_NS_CS5535_AUDIO) },
{ PCI_DEVICE(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_CS5536_AUDIO) },
{}
};
@ -148,6 +161,8 @@ static int snd_cs5535audio_mixer(struct cs5535audio *cs5535au)
return err;
}
snd_ac97_tune_hardware(cs5535au->ac97, ac97_quirks, ac97_quirk);
return 0;
}
@ -347,6 +362,8 @@ static int __devinit snd_cs5535audio_probe(struct pci_dev *pci,
if ((err = snd_cs5535audio_create(card, pci, &cs5535au)) < 0)
goto probefail_out;
card->private_data = cs5535au;
if ((err = snd_cs5535audio_mixer(cs5535au)) < 0)
goto probefail_out;
@ -383,6 +400,10 @@ static struct pci_driver driver = {
.id_table = snd_cs5535audio_ids,
.probe = snd_cs5535audio_probe,
.remove = __devexit_p(snd_cs5535audio_remove),
#ifdef CONFIG_PM
.suspend = snd_cs5535audio_suspend,
.resume = snd_cs5535audio_resume,
#endif
};
static int __init alsa_card_cs5535audio_init(void)

8
sound/pci/cs5535audio/cs5535audio.h
View file

@ -74,6 +74,8 @@
#define PRM_RDY_STS 0x00800000
#define ACC_CODEC_CNTL_WR_CMD (~0x80000000)
#define ACC_CODEC_CNTL_RD_CMD 0x80000000
#define ACC_CODEC_CNTL_LNK_SHUTDOWN 0x00040000
#define ACC_CODEC_CNTL_LNK_WRM_RST 0x00020000
#define PRD_JMP 0x2000
#define PRD_EOP 0x4000
#define PRD_EOT 0x8000
@ -88,6 +90,7 @@ struct cs5535audio_dma_ops {
void (*disable_dma)(struct cs5535audio *cs5535au);
void (*pause_dma)(struct cs5535audio *cs5535au);
void (*setup_prd)(struct cs5535audio *cs5535au, u32 prd_addr);
u32 (*read_prd)(struct cs5535audio *cs5535au);
u32 (*read_dma_pntr)(struct cs5535audio *cs5535au);
};
@ -103,11 +106,14 @@ struct cs5535audio_dma {
struct snd_pcm_substream *substream;
unsigned int buf_addr, buf_bytes;
unsigned int period_bytes, periods;
int suspended;
u32 saved_prd;
};
struct cs5535audio {
struct snd_card *card;
struct snd_ac97 *ac97;
struct snd_pcm *pcm;
int irq;
struct pci_dev *pci;
unsigned long port;
@ -117,6 +123,8 @@ struct cs5535audio {
struct cs5535audio_dma dmas[NUM_CS5535AUDIO_DMAS];
};
int snd_cs5535audio_suspend(struct pci_dev *pci, pm_message_t state);
int snd_cs5535audio_resume(struct pci_dev *pci);
int __devinit snd_cs5535audio_pcm(struct cs5535audio *cs5535audio);
#endif /* __SOUND_CS5535AUDIO_H */

24
sound/pci/cs5535audio/cs5535audio_pcm.c
View file

@ -43,7 +43,8 @@ static struct snd_pcm_hardware snd_cs5535audio_playback =
SNDRV_PCM_INFO_BLOCK_TRANSFER |
SNDRV_PCM_INFO_MMAP_VALID |
SNDRV_PCM_INFO_PAUSE |
SNDRV_PCM_INFO_SYNC_START
SNDRV_PCM_INFO_SYNC_START |
SNDRV_PCM_INFO_RESUME
),
.formats = (
SNDRV_PCM_FMTBIT_S16_LE
@ -193,6 +194,11 @@ static void cs5535audio_playback_setup_prd(struct cs5535audio *cs5535au,
cs_writel(cs5535au, ACC_BM0_PRD, prd_addr);
}
static u32 cs5535audio_playback_read_prd(struct cs5535audio *cs5535au)
{
return cs_readl(cs5535au, ACC_BM0_PRD);
}
static u32 cs5535audio_playback_read_dma_pntr(struct cs5535audio *cs5535au)
{
return cs_readl(cs5535au, ACC_BM0_PNTR);
@ -219,6 +225,11 @@ static void cs5535audio_capture_setup_prd(struct cs5535audio *cs5535au,
cs_writel(cs5535au, ACC_BM1_PRD, prd_addr);
}
static u32 cs5535audio_capture_read_prd(struct cs5535audio *cs5535au)
{
return cs_readl(cs5535au, ACC_BM1_PRD);
}
static u32 cs5535audio_capture_read_dma_pntr(struct cs5535audio *cs5535au)
{
return cs_readl(cs5535au, ACC_BM1_PNTR);
@ -285,9 +296,17 @@ static int snd_cs5535audio_trigger(struct snd_pcm_substream *substream, int cmd)
case SNDRV_PCM_TRIGGER_START:
dma->ops->enable_dma(cs5535au);
break;
case SNDRV_PCM_TRIGGER_RESUME:
dma->ops->enable_dma(cs5535au);
dma->suspended = 0;
break;
case SNDRV_PCM_TRIGGER_STOP:
dma->ops->disable_dma(cs5535au);
break;
case SNDRV_PCM_TRIGGER_SUSPEND:
dma->ops->disable_dma(cs5535au);
dma->suspended = 1;
break;
default:
snd_printk(KERN_ERR "unhandled trigger\n");
err = -EINVAL;
@ -375,6 +394,7 @@ static struct cs5535audio_dma_ops snd_cs5535audio_playback_dma_ops = {
.enable_dma = cs5535audio_playback_enable_dma,
.disable_dma = cs5535audio_playback_disable_dma,
.setup_prd = cs5535audio_playback_setup_prd,
.read_prd = cs5535audio_playback_read_prd,
.pause_dma = cs5535audio_playback_pause_dma,
.read_dma_pntr = cs5535audio_playback_read_dma_pntr,
};
@ -384,6 +404,7 @@ static struct cs5535audio_dma_ops snd_cs5535audio_capture_dma_ops = {
.enable_dma = cs5535audio_capture_enable_dma,
.disable_dma = cs5535audio_capture_disable_dma,
.setup_prd = cs5535audio_capture_setup_prd,
.read_prd = cs5535audio_capture_read_prd,
.pause_dma = cs5535audio_capture_pause_dma,
.read_dma_pntr = cs5535audio_capture_read_dma_pntr,
};
@ -413,6 +434,7 @@ int __devinit snd_cs5535audio_pcm(struct cs5535audio *cs5535au)
snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV,
snd_dma_pci_data(cs5535au->pci),
64*1024, 128*1024);
cs5535au->pcm = pcm;
return 0;
}

123
sound/pci/cs5535audio/cs5535audio_pm.c Normal file
View file

@ -0,0 +1,123 @@
/*
* 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/slab.h>
#include <linux/pci.h>
#include <linux/delay.h>
#include <sound/driver.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);
}
int snd_cs5535audio_suspend(struct pci_dev *pci, pm_message_t state)
{
struct snd_card *card = pci_get_drvdata(pci);
struct cs5535audio *cs5535au = card->private_data;
int i;
snd_power_change_state(card, SNDRV_CTL_POWER_D3hot);
for (i = 0; i < NUM_CS5535AUDIO_DMAS; i++) {
struct cs5535audio_dma *dma = &cs5535au->dmas[i];
if (dma && dma->substream && !dma->suspended)
dma->saved_prd = dma->ops->read_prd(cs5535au);
}
snd_pcm_suspend_all(cs5535au->pcm);
snd_ac97_suspend(cs5535au->ac97);
/* save important regs, then disable aclink in hw */
snd_cs5535audio_stop_hardware(cs5535au);
pci_disable_device(pci);
pci_save_state(pci);
return 0;
}
int snd_cs5535audio_resume(struct pci_dev *pci)
{
struct snd_card *card = pci_get_drvdata(pci);
struct cs5535audio *cs5535au = card->private_data;
u32 tmp;
int timeout;
int i;
pci_restore_state(pci);
pci_enable_device(pci);
pci_set_master(pci);
/* 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)
snd_printk(KERN_ERR "Failure getting AC Link ready\n");
/* we depend on ac97 to perform the codec power up */
snd_ac97_resume(cs5535au->ac97);
/* 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->suspended) {
dma->substream->ops->prepare(dma->substream);
dma->ops->setup_prd(cs5535au, dma->saved_prd);
}
}
snd_power_change_state(card, SNDRV_CTL_POWER_D0);
return 0;
}