{
/* FIXME */
struct au1xpsc_audio_data *pscdata = au1xpsc_ac97_workdata;
- unsigned short data, retry, tmo;
+ unsigned short retry, tmo;
+ unsigned long data;
au_writel(PSC_AC97EVNT_CD, AC97_EVNT(pscdata));
au_sync();
AC97_CDC(pscdata));
au_sync();
- tmo = 2000;
- while ((!(au_readl(AC97_EVNT(pscdata)) & PSC_AC97EVNT_CD))
- && --tmo)
- udelay(2);
+ tmo = 20;
+ do {
+ udelay(21);
+ if (au_readl(AC97_EVNT(pscdata)) & PSC_AC97EVNT_CD)
+ break;
+ } while (--tmo);
- data = au_readl(AC97_CDC(pscdata)) & 0xffff;
+ data = au_readl(AC97_CDC(pscdata));
au_writel(PSC_AC97EVNT_CD, AC97_EVNT(pscdata));
au_sync();
mutex_unlock(&pscdata->lock);
+
+ if (reg != ((data >> 16) & 0x7f))
+ tmo = 1; /* wrong register, try again */
+
} while (--retry && !tmo);
- return retry ? data : 0xffff;
+ return retry ? data & 0xffff : 0xffff;
}
/* AC97 controller writes to codec register */
AC97_CDC(pscdata));
au_sync();
- tmo = 2000;
- while ((!(au_readl(AC97_EVNT(pscdata)) & PSC_AC97EVNT_CD))
- && --tmo)
- udelay(2);
+ tmo = 20;
+ do {
+ udelay(21);
+ if (au_readl(AC97_EVNT(pscdata)) & PSC_AC97EVNT_CD)
+ break;
+ } while (--tmo);
au_writel(PSC_AC97EVNT_CD, AC97_EVNT(pscdata));
au_sync();
/* FIXME */
struct au1xpsc_audio_data *pscdata = au1xpsc_ac97_workdata;
unsigned long r, ro, stat;
- int chans, stype = SUBSTREAM_TYPE(substream);
+ int chans, t, stype = SUBSTREAM_TYPE(substream);
chans = params_channels(params);
au_sync();
/* ...wait for it... */
- while (au_readl(AC97_STAT(pscdata)) & PSC_AC97STAT_DR)
- asm volatile ("nop");
+ t = 100;
+ while ((au_readl(AC97_STAT(pscdata)) & PSC_AC97STAT_DR) && --t)
+ msleep(1);
+
+ if (!t)
+ printk(KERN_ERR "PSC-AC97: can't disable!\n");
/* ...write config... */
au_writel(r, AC97_CFG(pscdata));
au_sync();
/* ...and wait for ready bit */
- while (!(au_readl(AC97_STAT(pscdata)) & PSC_AC97STAT_DR))
- asm volatile ("nop");
+ t = 100;
+ while ((!(au_readl(AC97_STAT(pscdata)) & PSC_AC97STAT_DR)) && --t)
+ msleep(1);
+
+ if (!t)
+ printk(KERN_ERR "PSC-AC97: can't enable!\n");
mutex_unlock(&pscdata->lock);
static int au1xpsc_ac97_probe(struct platform_device *pdev,
struct snd_soc_dai *dai)
+{
+ return au1xpsc_ac97_workdata ? 0 : -ENODEV;
+}
+
+static void au1xpsc_ac97_remove(struct platform_device *pdev,
+ struct snd_soc_dai *dai)
+{
+}
+
+static struct snd_soc_dai_ops au1xpsc_ac97_dai_ops = {
+ .trigger = au1xpsc_ac97_trigger,
+ .hw_params = au1xpsc_ac97_hw_params,
+};
+
+struct snd_soc_dai au1xpsc_ac97_dai = {
+ .name = "au1xpsc_ac97",
+ .ac97_control = 1,
+ .probe = au1xpsc_ac97_probe,
+ .remove = au1xpsc_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,
+ },
+ .ops = &au1xpsc_ac97_dai_ops,
+};
+EXPORT_SYMBOL_GPL(au1xpsc_ac97_dai);
+
+static int __devinit au1xpsc_ac97_drvprobe(struct platform_device *pdev)
{
int ret;
struct resource *r;
unsigned long sel;
+ struct au1xpsc_audio_data *wd;
if (au1xpsc_ac97_workdata)
return -EBUSY;
- au1xpsc_ac97_workdata =
- kzalloc(sizeof(struct au1xpsc_audio_data), GFP_KERNEL);
- if (!au1xpsc_ac97_workdata)
+ wd = kzalloc(sizeof(struct au1xpsc_audio_data), GFP_KERNEL);
+ if (!wd)
return -ENOMEM;
- mutex_init(&au1xpsc_ac97_workdata->lock);
+ mutex_init(&wd->lock);
r = platform_get_resource(pdev, IORESOURCE_MEM, 0);
if (!r) {
}
ret = -EBUSY;
- au1xpsc_ac97_workdata->ioarea =
- request_mem_region(r->start, r->end - r->start + 1,
+ wd->ioarea = request_mem_region(r->start, r->end - r->start + 1,
"au1xpsc_ac97");
- if (!au1xpsc_ac97_workdata->ioarea)
+ if (!wd->ioarea)
goto out0;
- au1xpsc_ac97_workdata->mmio = ioremap(r->start, 0xffff);
- if (!au1xpsc_ac97_workdata->mmio)
+ wd->mmio = ioremap(r->start, 0xffff);
+ if (!wd->mmio)
goto out1;
/* configuration: max dma trigger threshold, enable ac97 */
- au1xpsc_ac97_workdata->cfg = PSC_AC97CFG_RT_FIFO8 |
- PSC_AC97CFG_TT_FIFO8 |
- PSC_AC97CFG_DE_ENABLE;
+ wd->cfg = PSC_AC97CFG_RT_FIFO8 | PSC_AC97CFG_TT_FIFO8 |
+ PSC_AC97CFG_DE_ENABLE;
- /* preserve PSC clock source set up by platform (dev.platform_data
- * is already occupied by soc layer)
- */
- sel = au_readl(PSC_SEL(au1xpsc_ac97_workdata)) & PSC_SEL_CLK_MASK;
- au_writel(PSC_CTRL_DISABLE, PSC_CTRL(au1xpsc_ac97_workdata));
+ /* preserve PSC clock source set up by platform */
+ sel = au_readl(PSC_SEL(wd)) & PSC_SEL_CLK_MASK;
+ au_writel(PSC_CTRL_DISABLE, PSC_CTRL(wd));
au_sync();
- au_writel(0, PSC_SEL(au1xpsc_ac97_workdata));
+ au_writel(0, PSC_SEL(wd));
au_sync();
- au_writel(PSC_SEL_PS_AC97MODE | sel, PSC_SEL(au1xpsc_ac97_workdata));
+ au_writel(PSC_SEL_PS_AC97MODE | sel, PSC_SEL(wd));
au_sync();
- /* next up: cold reset. Dont check for PSC-ready now since
- * there may not be any codec clock yet.
- */
- return 0;
+ ret = snd_soc_register_dai(&au1xpsc_ac97_dai);
+ if (ret)
+ goto out1;
+ wd->dmapd = au1xpsc_pcm_add(pdev);
+ if (wd->dmapd) {
+ platform_set_drvdata(pdev, wd);
+ au1xpsc_ac97_workdata = wd; /* MDEV */
+ return 0;
+ }
+
+ snd_soc_unregister_dai(&au1xpsc_ac97_dai);
out1:
- release_resource(au1xpsc_ac97_workdata->ioarea);
- kfree(au1xpsc_ac97_workdata->ioarea);
+ release_resource(wd->ioarea);
+ kfree(wd->ioarea);
out0:
- kfree(au1xpsc_ac97_workdata);
- au1xpsc_ac97_workdata = NULL;
+ kfree(wd);
return ret;
}
-static void au1xpsc_ac97_remove(struct platform_device *pdev,
- struct snd_soc_dai *dai)
+static int __devexit au1xpsc_ac97_drvremove(struct platform_device *pdev)
{
+ struct au1xpsc_audio_data *wd = platform_get_drvdata(pdev);
+
+ if (wd->dmapd)
+ au1xpsc_pcm_destroy(wd->dmapd);
+
+ snd_soc_unregister_dai(&au1xpsc_ac97_dai);
+
/* disable PSC completely */
- au_writel(0, AC97_CFG(au1xpsc_ac97_workdata));
+ au_writel(0, AC97_CFG(wd));
au_sync();
- au_writel(PSC_CTRL_DISABLE, PSC_CTRL(au1xpsc_ac97_workdata));
+ au_writel(PSC_CTRL_DISABLE, PSC_CTRL(wd));
au_sync();
- iounmap(au1xpsc_ac97_workdata->mmio);
- release_resource(au1xpsc_ac97_workdata->ioarea);
- kfree(au1xpsc_ac97_workdata->ioarea);
- kfree(au1xpsc_ac97_workdata);
- au1xpsc_ac97_workdata = NULL;
+ iounmap(wd->mmio);
+ release_resource(wd->ioarea);
+ kfree(wd->ioarea);
+ kfree(wd);
+
+ au1xpsc_ac97_workdata = NULL; /* MDEV */
+
+ return 0;
}
-static int au1xpsc_ac97_suspend(struct snd_soc_dai *dai)
+#ifdef CONFIG_PM
+static int au1xpsc_ac97_drvsuspend(struct device *dev)
{
+ struct au1xpsc_audio_data *wd = dev_get_drvdata(dev);
+
/* save interesting registers and disable PSC */
- au1xpsc_ac97_workdata->pm[0] =
- au_readl(PSC_SEL(au1xpsc_ac97_workdata));
+ wd->pm[0] = au_readl(PSC_SEL(wd));
- au_writel(0, AC97_CFG(au1xpsc_ac97_workdata));
+ au_writel(0, AC97_CFG(wd));
au_sync();
- au_writel(PSC_CTRL_DISABLE, PSC_CTRL(au1xpsc_ac97_workdata));
+ au_writel(PSC_CTRL_DISABLE, PSC_CTRL(wd));
au_sync();
return 0;
}
-static int au1xpsc_ac97_resume(struct snd_soc_dai *dai)
+static int au1xpsc_ac97_drvresume(struct device *dev)
{
+ struct au1xpsc_audio_data *wd = dev_get_drvdata(dev);
+
/* restore PSC clock config */
- au_writel(au1xpsc_ac97_workdata->pm[0] | PSC_SEL_PS_AC97MODE,
- PSC_SEL(au1xpsc_ac97_workdata));
+ au_writel(wd->pm[0] | PSC_SEL_PS_AC97MODE, PSC_SEL(wd));
au_sync();
/* after this point the ac97 core will cold-reset the codec.
return 0;
}
-static struct snd_soc_dai_ops au1xpsc_ac97_dai_ops = {
- .trigger = au1xpsc_ac97_trigger,
- .hw_params = au1xpsc_ac97_hw_params,
+static struct dev_pm_ops au1xpscac97_pmops = {
+ .suspend = au1xpsc_ac97_drvsuspend,
+ .resume = au1xpsc_ac97_drvresume,
};
-struct snd_soc_dai au1xpsc_ac97_dai = {
- .name = "au1xpsc_ac97",
- .ac97_control = 1,
- .probe = au1xpsc_ac97_probe,
- .remove = au1xpsc_ac97_remove,
- .suspend = au1xpsc_ac97_suspend,
- .resume = au1xpsc_ac97_resume,
- .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,
+#define AU1XPSCAC97_PMOPS &au1xpscac97_pmops
+
+#else
+
+#define AU1XPSCAC97_PMOPS NULL
+
+#endif
+
+static struct platform_driver au1xpsc_ac97_driver = {
+ .driver = {
+ .name = "au1xpsc_ac97",
+ .owner = THIS_MODULE,
+ .pm = AU1XPSCAC97_PMOPS,
},
- .ops = &au1xpsc_ac97_dai_ops,
+ .probe = au1xpsc_ac97_drvprobe,
+ .remove = __devexit_p(au1xpsc_ac97_drvremove),
};
-EXPORT_SYMBOL_GPL(au1xpsc_ac97_dai);
-static int __init au1xpsc_ac97_init(void)
+static int __init au1xpsc_ac97_load(void)
{
au1xpsc_ac97_workdata = NULL;
- return snd_soc_register_dai(&au1xpsc_ac97_dai);
+ return platform_driver_register(&au1xpsc_ac97_driver);
}
-static void __exit au1xpsc_ac97_exit(void)
+static void __exit au1xpsc_ac97_unload(void)
{
- snd_soc_unregister_dai(&au1xpsc_ac97_dai);
+ platform_driver_unregister(&au1xpsc_ac97_driver);
}
-module_init(au1xpsc_ac97_init);
-module_exit(au1xpsc_ac97_exit);
+module_init(au1xpsc_ac97_load);
+module_exit(au1xpsc_ac97_unload);
MODULE_LICENSE("GPL");
MODULE_DESCRIPTION("Au12x0/Au1550 PSC AC97 ALSA ASoC audio driver");
-MODULE_AUTHOR("Manuel Lauss <manuel.lauss@gmail.com>");
+MODULE_AUTHOR("Manuel Lauss");
+
projects / firefly-linux-kernel-4.4.55.git / blobdiff