Release 4.7 sound/soc/txx9/txx9aclc-ac97.c
/*
* TXx9 ACLC AC97 driver
*
* Copyright (C) 2009 Atsushi Nemoto
*
* Based on RBTX49xx patch from CELF patch archive.
* (C) Copyright TOSHIBA CORPORATION 2004-2006
*
* 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.
*/
#include <linux/init.h>
#include <linux/module.h>
#include <linux/delay.h>
#include <linux/interrupt.h>
#include <linux/io.h>
#include <linux/gfp.h>
#include <sound/core.h>
#include <sound/pcm.h>
#include <sound/soc.h>
#include "txx9aclc.h"
#define AC97_DIR \
(SND_SOC_DAIDIR_PLAYBACK | SND_SOC_DAIDIR_CAPTURE)
#define AC97_RATES \
SNDRV_PCM_RATE_8000_48000
#ifdef __BIG_ENDIAN
#define AC97_FMTS SNDRV_PCM_FMTBIT_S16_BE
#else
#define AC97_FMTS SNDRV_PCM_FMTBIT_S16_LE
#endif
static DECLARE_WAIT_QUEUE_HEAD(ac97_waitq);
/* REVISIT: How to find txx9aclc_drvdata from snd_ac97? */
static struct txx9aclc_plat_drvdata *txx9aclc_drvdata;
static int txx9aclc_regready(struct txx9aclc_plat_drvdata *drvdata)
{
return __raw_readl(drvdata->base + ACINTSTS) & ACINT_REGACCRDY;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| atsushi nemoto | atsushi nemoto | 21 | 91.30% | 1 | 50.00% |
| liam girdwood | liam girdwood | 2 | 8.70% | 1 | 50.00% |
| Total | 23 | 100.00% | 2 | 100.00% |
/* AC97 controller reads codec register */
static unsigned short txx9aclc_ac97_read(struct snd_ac97 *ac97,
unsigned short reg)
{
struct txx9aclc_plat_drvdata *drvdata = txx9aclc_drvdata;
void __iomem *base = drvdata->base;
u32 dat;
if (!(__raw_readl(base + ACINTSTS) & ACINT_CODECRDY(ac97->num)))
return 0xffff;
reg |= ac97->num << 7;
dat = (reg << ACREGACC_REG_SHIFT) | ACREGACC_READ;
__raw_writel(dat, base + ACREGACC);
__raw_writel(ACINT_REGACCRDY, base + ACINTEN);
if (!wait_event_timeout(ac97_waitq, txx9aclc_regready(txx9aclc_drvdata), HZ)) {
__raw_writel(ACINT_REGACCRDY, base + ACINTDIS);
printk(KERN_ERR "ac97 read timeout (reg %#x)\n", reg);
dat = 0xffff;
goto done;
}
dat = __raw_readl(base + ACREGACC);
if (((dat >> ACREGACC_REG_SHIFT) & 0xff) != reg) {
printk(KERN_ERR "reg mismatch %x with %x\n",
dat, reg);
dat = 0xffff;
goto done;
}
dat = (dat >> ACREGACC_DAT_SHIFT) & 0xffff;
done:
__raw_writel(ACINT_REGACCRDY, base + ACINTDIS);
return dat;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| atsushi nemoto | atsushi nemoto | 194 | 97.00% | 1 | 50.00% |
| liam girdwood | liam girdwood | 6 | 3.00% | 1 | 50.00% |
| Total | 200 | 100.00% | 2 | 100.00% |
/* AC97 controller writes to codec register */
static void txx9aclc_ac97_write(struct snd_ac97 *ac97, unsigned short reg,
unsigned short val)
{
struct txx9aclc_plat_drvdata *drvdata = txx9aclc_drvdata;
void __iomem *base = drvdata->base;
__raw_writel(((reg | (ac97->num << 7)) << ACREGACC_REG_SHIFT) |
(val << ACREGACC_DAT_SHIFT),
base + ACREGACC);
__raw_writel(ACINT_REGACCRDY, base + ACINTEN);
if (!wait_event_timeout(ac97_waitq, txx9aclc_regready(txx9aclc_drvdata), HZ)) {
printk(KERN_ERR
"ac97 write timeout (reg %#x)\n", reg);
}
__raw_writel(ACINT_REGACCRDY, base + ACINTDIS);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| atsushi nemoto | atsushi nemoto | 103 | 96.26% | 1 | 50.00% |
| liam girdwood | liam girdwood | 4 | 3.74% | 1 | 50.00% |
| Total | 107 | 100.00% | 2 | 100.00% |
static void txx9aclc_ac97_cold_reset(struct snd_ac97 *ac97)
{
struct txx9aclc_plat_drvdata *drvdata = txx9aclc_drvdata;
void __iomem *base = drvdata->base;
u32 ready = ACINT_CODECRDY(ac97->num) | ACINT_REGACCRDY;
__raw_writel(ACCTL_ENLINK, base + ACCTLDIS);
mmiowb();
udelay(1);
__raw_writel(ACCTL_ENLINK, base + ACCTLEN);
/* wait for primary codec ready status */
__raw_writel(ready, base + ACINTEN);
if (!wait_event_timeout(ac97_waitq,
(__raw_readl(base + ACINTSTS) & ready) == ready,
HZ)) {
dev_err(&ac97->dev, "primary codec is not ready "
"(status %#x)\n",
__raw_readl(base + ACINTSTS));
}
__raw_writel(ACINT_REGACCRDY, base + ACINTSTS);
__raw_writel(ready, base + ACINTDIS);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| atsushi nemoto | atsushi nemoto | 135 | 99.26% | 1 | 50.00% |
| liam girdwood | liam girdwood | 1 | 0.74% | 1 | 50.00% |
| Total | 136 | 100.00% | 2 | 100.00% |
/* AC97 controller operations */
static struct snd_ac97_bus_ops txx9aclc_ac97_ops = {
.read = txx9aclc_ac97_read,
.write = txx9aclc_ac97_write,
.reset = txx9aclc_ac97_cold_reset,
};
static irqreturn_t txx9aclc_ac97_irq(int irq, void *dev_id)
{
struct txx9aclc_plat_drvdata *drvdata = dev_id;
void __iomem *base = drvdata->base;
__raw_writel(__raw_readl(base + ACINTMSTS), base + ACINTDIS);
wake_up(&ac97_waitq);
return IRQ_HANDLED;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| atsushi nemoto | atsushi nemoto | 52 | 100.00% | 1 | 100.00% |
| Total | 52 | 100.00% | 1 | 100.00% |
static int txx9aclc_ac97_probe(struct snd_soc_dai *dai)
{
txx9aclc_drvdata = snd_soc_dai_get_drvdata(dai);
return 0;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| atsushi nemoto | atsushi nemoto | 19 | 90.48% | 1 | 50.00% |
| liam girdwood | liam girdwood | 2 | 9.52% | 1 | 50.00% |
| Total | 21 | 100.00% | 2 | 100.00% |
static int txx9aclc_ac97_remove(struct snd_soc_dai *dai)
{
struct txx9aclc_plat_drvdata *drvdata = snd_soc_dai_get_drvdata(dai);
/* disable AC-link */
__raw_writel(ACCTL_ENLINK, drvdata->base + ACCTLDIS);
txx9aclc_drvdata = NULL;
return 0;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| atsushi nemoto | atsushi nemoto | 33 | 82.50% | 1 | 50.00% |
| liam girdwood | liam girdwood | 7 | 17.50% | 1 | 50.00% |
| Total | 40 | 100.00% | 2 | 100.00% |
static struct snd_soc_dai_driver txx9aclc_ac97_dai = {
.bus_control = true,
.probe = txx9aclc_ac97_probe,
.remove = txx9aclc_ac97_remove,
.playback = {
.rates = AC97_RATES,
.formats = AC97_FMTS,
.channels_min = 2,
.channels_max = 2,
},
.capture = {
.rates = AC97_RATES,
.formats = AC97_FMTS,
.channels_min = 2,
.channels_max = 2,
},
};
static const struct snd_soc_component_driver txx9aclc_ac97_component = {
.name = "txx9aclc-ac97",
};
static int txx9aclc_ac97_dev_probe(struct platform_device *pdev)
{
struct txx9aclc_plat_drvdata *drvdata;
struct resource *r;
int err;
int irq;
irq = platform_get_irq(pdev, 0);
if (irq < 0)
return irq;
drvdata = devm_kzalloc(&pdev->dev, sizeof(*drvdata), GFP_KERNEL);
if (!drvdata)
return -ENOMEM;
r = platform_get_resource(pdev, IORESOURCE_MEM, 0);
drvdata->base = devm_ioremap_resource(&pdev->dev, r);
if (IS_ERR(drvdata->base))
return PTR_ERR(drvdata->base);
platform_set_drvdata(pdev, drvdata);
drvdata->physbase = r->start;
if (sizeof(drvdata->physbase) > sizeof(r->start) &&
r->start >= TXX9_DIRECTMAP_BASE &&
r->start < TXX9_DIRECTMAP_BASE + 0x400000)
drvdata->physbase |= 0xf00000000ull;
err = devm_request_irq(&pdev->dev, irq, txx9aclc_ac97_irq,
0, dev_name(&pdev->dev), drvdata);
if (err < 0)
return err;
err = snd_soc_set_ac97_ops(&txx9aclc_ac97_ops);
if (err < 0)
return err;
return snd_soc_register_component(&pdev->dev, &txx9aclc_ac97_component,
&txx9aclc_ac97_dai, 1);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| atsushi nemoto | atsushi nemoto | 163 | 69.66% | 1 | 14.29% |
| mark brown | mark brown | 34 | 14.53% | 2 | 28.57% |
| alexander shiyan | alexander shiyan | 27 | 11.54% | 1 | 14.29% |
| kuninori morimoto | kuninori morimoto | 6 | 2.56% | 1 | 14.29% |
| liam girdwood | liam girdwood | 3 | 1.28% | 1 | 14.29% |
| yong zhang | yong zhang | 1 | 0.43% | 1 | 14.29% |
| Total | 234 | 100.00% | 7 | 100.00% |
static int txx9aclc_ac97_dev_remove(struct platform_device *pdev)
{
snd_soc_unregister_component(&pdev->dev);
snd_soc_set_ac97_ops(NULL);
return 0;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| atsushi nemoto | atsushi nemoto | 18 | 66.67% | 1 | 25.00% |
| mark brown | mark brown | 5 | 18.52% | 1 | 25.00% |
| liam girdwood | liam girdwood | 3 | 11.11% | 1 | 25.00% |
| kuninori morimoto | kuninori morimoto | 1 | 3.70% | 1 | 25.00% |
| Total | 27 | 100.00% | 4 | 100.00% |
static struct platform_driver txx9aclc_ac97_driver = {
.probe = txx9aclc_ac97_dev_probe,
.remove = txx9aclc_ac97_dev_remove,
.driver = {
.name = "txx9aclc-ac97",
},
};
module_platform_driver(txx9aclc_ac97_driver);
MODULE_AUTHOR("Atsushi Nemoto <anemo@mba.ocn.ne.jp>");
MODULE_DESCRIPTION("TXx9 ACLC AC97 driver");
MODULE_LICENSE("GPL");
MODULE_ALIAS("platform:txx9aclc-ac97");
Overall Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| atsushi nemoto | atsushi nemoto | 937 | 87.49% | 1 | 9.09% |
| mark brown | mark brown | 41 | 3.83% | 2 | 18.18% |
| liam girdwood | liam girdwood | 33 | 3.08% | 1 | 9.09% |
| alexander shiyan | alexander shiyan | 27 | 2.52% | 1 | 9.09% |
| kuninori morimoto | kuninori morimoto | 20 | 1.87% | 1 | 9.09% |
| geert uytterhoeven | geert uytterhoeven | 5 | 0.47% | 1 | 9.09% |
| tejun heo | tejun heo | 3 | 0.28% | 1 | 9.09% |
| lars-peter clausen | lars-peter clausen | 2 | 0.19% | 1 | 9.09% |
| axel lin | axel lin | 2 | 0.19% | 1 | 9.09% |
| yong zhang | yong zhang | 1 | 0.09% | 1 | 9.09% |
| Total | 1071 | 100.00% | 11 | 100.00% |
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