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linux-next/sound/soc/blackfin/bf5xx-ad73311.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

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/*
* File: sound/soc/blackfin/bf5xx-ad73311.c
* Author: Cliff Cai <Cliff.Cai@analog.com>
*
* Created: Thur Sep 25 2008
* Description: Board driver for ad73311 sound chip
*
* Modified:
* Copyright 2008 Analog Devices Inc.
*
* Bugs: Enter bugs at http://blackfin.uclinux.org/
*
* 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, see the file COPYING, or write
* to the Free Software Foundation, Inc.,
* 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include <linux/module.h>
#include <linux/moduleparam.h>
#include <linux/device.h>
#include <linux/delay.h>
#include <linux/gpio.h>
#include <sound/core.h>
#include <sound/pcm.h>
#include <sound/soc.h>
#include <sound/soc-dapm.h>
#include <sound/pcm_params.h>
#include <asm/blackfin.h>
#include <asm/cacheflush.h>
#include <asm/irq.h>
#include <asm/dma.h>
#include <asm/portmux.h>
#include "../codecs/ad73311.h"
#include "bf5xx-sport.h"
#include "bf5xx-i2s-pcm.h"
#if CONFIG_SND_BF5XX_SPORT_NUM == 0
#define bfin_write_SPORT_TCR1 bfin_write_SPORT0_TCR1
#define bfin_read_SPORT_TCR1 bfin_read_SPORT0_TCR1
#define bfin_write_SPORT_TCR2 bfin_write_SPORT0_TCR2
#define bfin_write_SPORT_TX16 bfin_write_SPORT0_TX16
#define bfin_read_SPORT_STAT bfin_read_SPORT0_STAT
#else
#define bfin_write_SPORT_TCR1 bfin_write_SPORT1_TCR1
#define bfin_read_SPORT_TCR1 bfin_read_SPORT1_TCR1
#define bfin_write_SPORT_TCR2 bfin_write_SPORT1_TCR2
#define bfin_write_SPORT_TX16 bfin_write_SPORT1_TX16
#define bfin_read_SPORT_STAT bfin_read_SPORT1_STAT
#endif
#define GPIO_SE CONFIG_SND_BFIN_AD73311_SE
static struct snd_soc_card bf5xx_ad73311;
static int snd_ad73311_startup(void)
{
pr_debug("%s enter\n", __func__);
/* Pull up SE pin on AD73311L */
gpio_set_value(GPIO_SE, 1);
return 0;
}
static int snd_ad73311_configure(void)
{
unsigned short ctrl_regs[6];
unsigned short status = 0;
int count = 0;
/* DMCLK = MCLK = 16.384 MHz
* SCLK = DMCLK/8 = 2.048 MHz
* Sample Rate = DMCLK/2048 = 8 KHz
*/
ctrl_regs[0] = AD_CONTROL | AD_WRITE | CTRL_REG_B | REGB_MCDIV(0) | \
REGB_SCDIV(0) | REGB_DIRATE(0);
ctrl_regs[1] = AD_CONTROL | AD_WRITE | CTRL_REG_C | REGC_PUDEV | \
REGC_PUADC | REGC_PUDAC | REGC_PUREF | REGC_REFUSE ;
ctrl_regs[2] = AD_CONTROL | AD_WRITE | CTRL_REG_D | REGD_OGS(2) | \
REGD_IGS(2);
ctrl_regs[3] = AD_CONTROL | AD_WRITE | CTRL_REG_E | REGE_DA(0x1f);
ctrl_regs[4] = AD_CONTROL | AD_WRITE | CTRL_REG_F | REGF_SEEN ;
ctrl_regs[5] = AD_CONTROL | AD_WRITE | CTRL_REG_A | REGA_MODE_DATA;
local_irq_disable();
snd_ad73311_startup();
udelay(1);
bfin_write_SPORT_TCR1(TFSR);
bfin_write_SPORT_TCR2(0xF);
SSYNC();
/* SPORT Tx Register is a 8 x 16 FIFO, all the data can be put to
* FIFO before enable SPORT to transfer the data
*/
for (count = 0; count < 6; count++)
bfin_write_SPORT_TX16(ctrl_regs[count]);
SSYNC();
bfin_write_SPORT_TCR1(bfin_read_SPORT_TCR1() | TSPEN);
SSYNC();
/* When TUVF is set, the data is already send out */
while (!(status & TUVF) && ++count < 10000) {
udelay(1);
status = bfin_read_SPORT_STAT();
SSYNC();
}
bfin_write_SPORT_TCR1(bfin_read_SPORT_TCR1() & ~TSPEN);
SSYNC();
local_irq_enable();
if (count >= 10000) {
printk(KERN_ERR "ad73311: failed to configure codec\n");
return -1;
}
return 0;
}
static int bf5xx_probe(struct platform_device *pdev)
{
int err;
if (gpio_request(GPIO_SE, "AD73311_SE")) {
printk(KERN_ERR "%s: Failed ro request GPIO_%d\n", __func__, GPIO_SE);
return -EBUSY;
}
gpio_direction_output(GPIO_SE, 0);
err = snd_ad73311_configure();
if (err < 0)
return -EFAULT;
return 0;
}
static int bf5xx_ad73311_startup(struct snd_pcm_substream *substream)
{
struct snd_soc_pcm_runtime *rtd = substream->private_data;
struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
pr_debug("%s enter\n", __func__);
snd_soc_dai_set_drvdata(cpu_dai, sport_handle);
return 0;
}
static int bf5xx_ad73311_hw_params(struct snd_pcm_substream *substream,
struct snd_pcm_hw_params *params)
{
struct snd_soc_pcm_runtime *rtd = substream->private_data;
struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
int ret = 0;
pr_debug("%s rate %d format %x\n", __func__, params_rate(params),
params_format(params));
/* set cpu DAI configuration */
ret = snd_soc_dai_set_fmt(cpu_dai, SND_SOC_DAIFMT_DSP_A |
SND_SOC_DAIFMT_NB_NF | SND_SOC_DAIFMT_CBM_CFM);
if (ret < 0)
return ret;
return 0;
}
static struct snd_soc_ops bf5xx_ad73311_ops = {
.startup = bf5xx_ad73311_startup,
.hw_params = bf5xx_ad73311_hw_params,
};
static struct snd_soc_dai_link bf5xx_ad73311_dai = {
.name = "ad73311",
.stream_name = "AD73311",
.cpu_dai_name = "bf5xx-i2s",
.codec_dai_name = "ad73311-hifi",
.platform_name = "bfin-pcm-audio",
.codec_name = "ad73311-codec",
.ops = &bf5xx_ad73311_ops,
};
static struct snd_soc_card bf5xx_ad73311 = {
.name = "bf5xx_ad73311",
.probe = bf5xx_probe,
.dai_link = &bf5xx_ad73311_dai,
.num_links = 1,
};
static struct platform_device *bf5xx_ad73311_snd_device;
static int __init bf5xx_ad73311_init(void)
{
int ret;
pr_debug("%s enter\n", __func__);
bf5xx_ad73311_snd_device = platform_device_alloc("soc-audio", -1);
if (!bf5xx_ad73311_snd_device)
return -ENOMEM;
platform_set_drvdata(bf5xx_ad73311_snd_device, &bf5xx_ad73311);
ret = platform_device_add(bf5xx_ad73311_snd_device);
if (ret)
platform_device_put(bf5xx_ad73311_snd_device);
return ret;
}
static void __exit bf5xx_ad73311_exit(void)
{
pr_debug("%s enter\n", __func__);
platform_device_unregister(bf5xx_ad73311_snd_device);
}
module_init(bf5xx_ad73311_init);
module_exit(bf5xx_ad73311_exit);
/* Module information */
MODULE_AUTHOR("Cliff Cai");
MODULE_DESCRIPTION("ALSA SoC AD73311 Blackfin");
MODULE_LICENSE("GPL");
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