linux/sound/soc/nuc900/nuc900-ac97.c
Liam Girdwood f0fba2ad1b ASoC: multi-component - ASoC Multi-Component Support
This patch extends the ASoC API to allow sound cards to have more than one
CODEC and more than one platform DMA controller. This is achieved by dividing
some current ASoC structures that contain both driver data and device data into
structures that only either contain device data or driver data. i.e.

 struct snd_soc_codec    --->  struct snd_soc_codec (device data)
                          +->  struct snd_soc_codec_driver (driver data)

 struct snd_soc_platform --->  struct snd_soc_platform (device data)
                          +->  struct snd_soc_platform_driver (driver data)

 struct snd_soc_dai      --->  struct snd_soc_dai (device data)
                          +->  struct snd_soc_dai_driver (driver data)

 struct snd_soc_device   --->  deleted

This now allows ASoC to be more tightly aligned with the Linux driver model and
also means that every ASoC codec, platform and (platform) DAI is a kernel
device. ASoC component private data is now stored as device private data.

The ASoC sound card struct snd_soc_card has also been updated to store lists
of it's components rather than a pointer to a codec and platform. The PCM
runtime struct soc_pcm_runtime now has pointers to all its components.

This patch adds DAPM support for ASoC multi-component and removes struct
snd_soc_socdev from DAPM core. All DAPM calls are now made on a card, codec
or runtime PCM level basis rather than using snd_soc_socdev.

Other notable multi-component changes:-

 * Stream operations now de-reference less structures.
 * close_delayed work() now runs on a DAI basis rather than looping all DAIs
   in a card.
 * PM suspend()/resume() operations can now handle N CODECs and Platforms
   per sound card.
 * Added soc_bind_dai_link() to bind the component devices to the sound card.
 * Added soc_dai_link_probe() and soc_dai_link_remove() to probe and remove
   DAI link components.
 * sysfs entries can now be registered per component per card.
 * snd_soc_new_pcms() functionailty rolled into dai_link_probe().
 * snd_soc_register_codec() now does all the codec list and mutex init.

This patch changes the probe() and remove() of the CODEC drivers as follows:-

 o Make CODEC driver a platform driver
 o Moved all struct snd_soc_codec list, mutex, etc initialiasation to core.
 o Removed all static codec pointers (drivers now support > 1 codec dev)
 o snd_soc_register_pcms() now done by core.
 o snd_soc_register_dai() folded into snd_soc_register_codec().

CS4270 portions:
Acked-by: Timur Tabi <timur@freescale.com>

Some TLV320aic23 and Cirrus platform fixes.
Signed-off-by: Ryan Mallon <ryan@bluewatersys.com>

TI CODEC and OMAP fixes
Signed-off-by: Peter Ujfalusi <peter.ujfalusi@nokia.com>
Signed-off-by: Janusz Krzysztofik <jkrzyszt@tis.icnet.pl>
Signed-off-by: Jarkko Nikula <jhnikula@gmail.com>

Samsung platform and misc fixes :-
Signed-off-by: Chanwoo Choi <cw00.choi@samsung.com>
Signed-off-by: Joonyoung Shim <jy0922.shim@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Reviewed-by: Jassi Brar <jassi.brar@samsung.com>
Signed-off-by: Seungwhan Youn <sw.youn@samsung.com>

MPC8610 and PPC fixes.
Signed-off-by: Timur Tabi <timur@freescale.com>

i.MX fixes and some core fixes.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

J4740 platform fixes:-
Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>

CC: Tony Lindgren <tony@atomide.com>
CC: Nicolas Ferre <nicolas.ferre@atmel.com>
CC: Kevin Hilman <khilman@deeprootsystems.com>
CC: Sascha Hauer <s.hauer@pengutronix.de>
CC: Atsushi Nemoto <anemo@mba.ocn.ne.jp>
CC: Kuninori Morimoto <morimoto.kuninori@renesas.com>
CC: Daniel Gloeckner <dg@emlix.com>
CC: Manuel Lauss <mano@roarinelk.homelinux.net>
CC: Mike Frysinger <vapier.adi@gmail.com>
CC: Arnaud Patard <apatard@mandriva.com>
CC: Wan ZongShun <mcuos.com@gmail.com>

Acked-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Liam Girdwood <lrg@slimlogic.co.uk>
2010-08-12 14:00:00 +01:00

427 lines
10 KiB
C

/*
* Copyright (c) 2009-2010 Nuvoton technology corporation.
*
* Wan ZongShun <mcuos.com@gmail.com>
*
* 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;version 2 of the License.
*
*/
#include <linux/init.h>
#include <linux/module.h>
#include <linux/slab.h>
#include <linux/device.h>
#include <linux/delay.h>
#include <linux/mutex.h>
#include <linux/suspend.h>
#include <sound/core.h>
#include <sound/pcm.h>
#include <sound/initval.h>
#include <sound/soc.h>
#include <linux/device.h>
#include <linux/clk.h>
#include <mach/mfp.h>
#include "nuc900-audio.h"
static DEFINE_MUTEX(ac97_mutex);
struct nuc900_audio *nuc900_ac97_data;
static int nuc900_checkready(void)
{
struct nuc900_audio *nuc900_audio = nuc900_ac97_data;
if (!(AUDIO_READ(nuc900_audio->mmio + ACTL_ACIS0) & CODEC_READY))
return -EPERM;
return 0;
}
/* AC97 controller reads codec register */
static unsigned short nuc900_ac97_read(struct snd_ac97 *ac97,
unsigned short reg)
{
struct nuc900_audio *nuc900_audio = nuc900_ac97_data;
unsigned long timeout = 0x10000, val;
mutex_lock(&ac97_mutex);
val = nuc900_checkready();
if (!!val) {
dev_err(nuc900_audio->dev, "AC97 codec is not ready\n");
goto out;
}
/* set the R_WB bit and write register index */
AUDIO_WRITE(nuc900_audio->mmio + ACTL_ACOS1, R_WB | reg);
/* set the valid frame bit and valid slots */
val = AUDIO_READ(nuc900_audio->mmio + ACTL_ACOS0);
val |= (VALID_FRAME | SLOT1_VALID);
AUDIO_WRITE(nuc900_audio->mmio + ACTL_ACOS0, val);
udelay(100);
/* polling the AC_R_FINISH */
while (!(AUDIO_READ(nuc900_audio->mmio + ACTL_ACCON) & AC_R_FINISH)
&& timeout--)
mdelay(1);
if (!timeout) {
dev_err(nuc900_audio->dev, "AC97 read register time out !\n");
val = -EPERM;
goto out;
}
val = AUDIO_READ(nuc900_audio->mmio + ACTL_ACOS0) ;
val &= ~SLOT1_VALID;
AUDIO_WRITE(nuc900_audio->mmio + ACTL_ACOS0, val);
if (AUDIO_READ(nuc900_audio->mmio + ACTL_ACIS1) >> 2 != reg) {
dev_err(nuc900_audio->dev,
"R_INDEX of REG_ACTL_ACIS1 not match!\n");
}
udelay(100);
val = (AUDIO_READ(nuc900_audio->mmio + ACTL_ACIS2) & 0xFFFF);
out:
mutex_unlock(&ac97_mutex);
return val;
}
/* AC97 controller writes to codec register */
static void nuc900_ac97_write(struct snd_ac97 *ac97, unsigned short reg,
unsigned short val)
{
struct nuc900_audio *nuc900_audio = nuc900_ac97_data;
unsigned long tmp, timeout = 0x10000;
mutex_lock(&ac97_mutex);
tmp = nuc900_checkready();
if (!!tmp)
dev_err(nuc900_audio->dev, "AC97 codec is not ready\n");
/* clear the R_WB bit and write register index */
AUDIO_WRITE(nuc900_audio->mmio + ACTL_ACOS1, reg);
/* write register value */
AUDIO_WRITE(nuc900_audio->mmio + ACTL_ACOS2, val);
/* set the valid frame bit and valid slots */
tmp = AUDIO_READ(nuc900_audio->mmio + ACTL_ACOS0);
tmp |= SLOT1_VALID | SLOT2_VALID | VALID_FRAME;
AUDIO_WRITE(nuc900_audio->mmio + ACTL_ACOS0, tmp);
udelay(100);
/* polling the AC_W_FINISH */
while ((AUDIO_READ(nuc900_audio->mmio + ACTL_ACCON) & AC_W_FINISH)
&& timeout--)
mdelay(1);
if (!timeout)
dev_err(nuc900_audio->dev, "AC97 write register time out !\n");
tmp = AUDIO_READ(nuc900_audio->mmio + ACTL_ACOS0);
tmp &= ~(SLOT1_VALID | SLOT2_VALID);
AUDIO_WRITE(nuc900_audio->mmio + ACTL_ACOS0, tmp);
mutex_unlock(&ac97_mutex);
}
static void nuc900_ac97_warm_reset(struct snd_ac97 *ac97)
{
struct nuc900_audio *nuc900_audio = nuc900_ac97_data;
unsigned long val;
mutex_lock(&ac97_mutex);
/* warm reset AC 97 */
val = AUDIO_READ(nuc900_audio->mmio + ACTL_ACCON);
val |= AC_W_RES;
AUDIO_WRITE(nuc900_audio->mmio + ACTL_ACCON, val);
udelay(100);
val = nuc900_checkready();
if (!!val)
dev_err(nuc900_audio->dev, "AC97 codec is not ready\n");
mutex_unlock(&ac97_mutex);
}
static void nuc900_ac97_cold_reset(struct snd_ac97 *ac97)
{
struct nuc900_audio *nuc900_audio = nuc900_ac97_data;
unsigned long val;
mutex_lock(&ac97_mutex);
/* reset Audio Controller */
val = AUDIO_READ(nuc900_audio->mmio + ACTL_RESET);
val |= ACTL_RESET_BIT;
AUDIO_WRITE(nuc900_audio->mmio + ACTL_RESET, val);
val = AUDIO_READ(nuc900_audio->mmio + ACTL_RESET);
val &= (~ACTL_RESET_BIT);
AUDIO_WRITE(nuc900_audio->mmio + ACTL_RESET, val);
/* reset AC-link interface */
val = AUDIO_READ(nuc900_audio->mmio + ACTL_RESET);
val |= AC_RESET;
AUDIO_WRITE(nuc900_audio->mmio + ACTL_RESET, val);
val = AUDIO_READ(nuc900_audio->mmio + ACTL_RESET);
val &= ~AC_RESET;
AUDIO_WRITE(nuc900_audio->mmio + ACTL_RESET, val);
/* cold reset AC 97 */
val = AUDIO_READ(nuc900_audio->mmio + ACTL_ACCON);
val |= AC_C_RES;
AUDIO_WRITE(nuc900_audio->mmio + ACTL_ACCON, val);
val = AUDIO_READ(nuc900_audio->mmio + ACTL_ACCON);
val &= (~AC_C_RES);
AUDIO_WRITE(nuc900_audio->mmio + ACTL_ACCON, val);
udelay(100);
mutex_unlock(&ac97_mutex);
}
/* AC97 controller operations */
struct snd_ac97_bus_ops soc_ac97_ops = {
.read = nuc900_ac97_read,
.write = nuc900_ac97_write,
.reset = nuc900_ac97_cold_reset,
.warm_reset = nuc900_ac97_warm_reset,
}
EXPORT_SYMBOL_GPL(soc_ac97_ops);
static int nuc900_ac97_trigger(struct snd_pcm_substream *substream,
int cmd, struct snd_soc_dai *dai)
{
struct nuc900_audio *nuc900_audio = nuc900_ac97_data;
int ret;
unsigned long val, tmp;
ret = 0;
switch (cmd) {
case SNDRV_PCM_TRIGGER_START:
case SNDRV_PCM_TRIGGER_RESUME:
val = AUDIO_READ(nuc900_audio->mmio + ACTL_RESET);
if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
tmp = AUDIO_READ(nuc900_audio->mmio + ACTL_ACOS0);
tmp |= (SLOT3_VALID | SLOT4_VALID | VALID_FRAME);
AUDIO_WRITE(nuc900_audio->mmio + ACTL_ACOS0, tmp);
tmp = AUDIO_READ(nuc900_audio->mmio + ACTL_PSR);
tmp |= (P_DMA_END_IRQ | P_DMA_MIDDLE_IRQ);
AUDIO_WRITE(nuc900_audio->mmio + ACTL_PSR, tmp);
val |= AC_PLAY;
} else {
tmp = AUDIO_READ(nuc900_audio->mmio + ACTL_RSR);
tmp |= (R_DMA_END_IRQ | R_DMA_MIDDLE_IRQ);
AUDIO_WRITE(nuc900_audio->mmio + ACTL_RSR, tmp);
val |= AC_RECORD;
}
AUDIO_WRITE(nuc900_audio->mmio + ACTL_RESET, val);
break;
case SNDRV_PCM_TRIGGER_STOP:
case SNDRV_PCM_TRIGGER_SUSPEND:
val = AUDIO_READ(nuc900_audio->mmio + ACTL_RESET);
if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
tmp = AUDIO_READ(nuc900_audio->mmio + ACTL_ACOS0);
tmp &= ~(SLOT3_VALID | SLOT4_VALID);
AUDIO_WRITE(nuc900_audio->mmio + ACTL_ACOS0, tmp);
AUDIO_WRITE(nuc900_audio->mmio + ACTL_PSR, RESET_PRSR);
val &= ~AC_PLAY;
} else {
AUDIO_WRITE(nuc900_audio->mmio + ACTL_RSR, RESET_PRSR);
val &= ~AC_RECORD;
}
AUDIO_WRITE(nuc900_audio->mmio + ACTL_RESET, val);
break;
default:
ret = -EINVAL;
}
return ret;
}
static int nuc900_ac97_probe(struct platform_device *pdev,
struct snd_soc_dai *dai)
{
struct nuc900_audio *nuc900_audio = nuc900_ac97_data;
unsigned long val;
mutex_lock(&ac97_mutex);
/* enable unit clock */
clk_enable(nuc900_audio->clk);
/* enable audio controller and AC-link interface */
val = AUDIO_READ(nuc900_audio->mmio + ACTL_CON);
val |= (IIS_AC_PIN_SEL | ACLINK_EN);
AUDIO_WRITE(nuc900_audio->mmio + ACTL_CON, val);
mutex_unlock(&ac97_mutex);
return 0;
}
static void nuc900_ac97_remove(struct platform_device *pdev,
struct snd_soc_dai *dai)
{
struct nuc900_audio *nuc900_audio = nuc900_ac97_data;
clk_disable(nuc900_audio->clk);
}
static struct snd_soc_dai_ops nuc900_ac97_dai_ops = {
.trigger = nuc900_ac97_trigger,
};
static struct snd_soc_dai_driver nuc900_ac97_dai = {
.probe = nuc900_ac97_probe,
.remove = nuc900_ac97_remove,
.ac97_control = 1,
.playback = {
.rates = SNDRV_PCM_RATE_8000_48000,
.formats = SNDRV_PCM_FMTBIT_S16_LE,
.channels_min = 1,
.channels_max = 2,
},
.capture = {
.rates = SNDRV_PCM_RATE_8000_48000,
.formats = SNDRV_PCM_FMTBIT_S16_LE,
.channels_min = 1,
.channels_max = 2,
},
.ops = &nuc900_ac97_dai_ops,
}
static int __devinit nuc900_ac97_drvprobe(struct platform_device *pdev)
{
struct nuc900_audio *nuc900_audio;
int ret;
if (nuc900_ac97_data)
return -EBUSY;
nuc900_audio = kzalloc(sizeof(struct nuc900_audio), GFP_KERNEL);
if (!nuc900_audio)
return -ENOMEM;
spin_lock_init(&nuc900_audio->lock);
nuc900_audio->res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
if (!nuc900_audio->res) {
ret = -ENODEV;
goto out0;
}
if (!request_mem_region(nuc900_audio->res->start,
resource_size(nuc900_audio->res), pdev->name)) {
ret = -EBUSY;
goto out0;
}
nuc900_audio->mmio = ioremap(nuc900_audio->res->start,
resource_size(nuc900_audio->res));
if (!nuc900_audio->mmio) {
ret = -ENOMEM;
goto out1;
}
nuc900_audio->clk = clk_get(&pdev->dev, NULL);
if (IS_ERR(nuc900_audio->clk)) {
ret = PTR_ERR(nuc900_audio->clk);
goto out2;
}
nuc900_audio->irq_num = platform_get_irq(pdev, 0);
if (!nuc900_audio->irq_num) {
ret = -EBUSY;
goto out2;
}
nuc900_ac97_data = nuc900_audio;
ret = snd_soc_register_dai(&pdev->dev, &nuc900_ac97_dai);
if (ret)
goto out3;
mfp_set_groupg(nuc900_audio->dev); /* enbale ac97 multifunction pin*/
return 0;
out3:
clk_put(nuc900_audio->clk);
out2:
iounmap(nuc900_audio->mmio);
out1:
release_mem_region(nuc900_audio->res->start,
resource_size(nuc900_audio->res));
out0:
kfree(nuc900_audio);
return ret;
}
static int __devexit nuc900_ac97_drvremove(struct platform_device *pdev)
{
snd_soc_unregister_dai(&pdev->dev);
clk_put(nuc900_ac97_data->clk);
iounmap(nuc900_ac97_data->mmio);
release_mem_region(nuc900_ac97_data->res->start,
resource_size(nuc900_ac97_data->res));
nuc900_ac97_data = NULL;
return 0;
}
static struct platform_driver nuc900_ac97_driver = {
.driver = {
.name = "nuc900-ac97",
.owner = THIS_MODULE,
},
.probe = nuc900_ac97_drvprobe,
.remove = __devexit_p(nuc900_ac97_drvremove),
};
static int __init nuc900_ac97_init(void)
{
return platform_driver_register(&nuc900_ac97_driver);
}
static void __exit nuc900_ac97_exit(void)
{
platform_driver_unregister(&nuc900_ac97_driver);
}
module_init(nuc900_ac97_init);
module_exit(nuc900_ac97_exit);
MODULE_AUTHOR("Wan ZongShun <mcuos.com@gmail.com>");
MODULE_DESCRIPTION("NUC900 AC97 SoC driver!");
MODULE_LICENSE("GPL");
MODULE_ALIAS("platform:nuc900-ac97");