* Au12x0/Au1550 PSC ALSA ASoC audio support.
*
* (c) 2007-2008 MSC Vertriebsges.m.b.H.,
- * Manuel Lauss <mano@roarinelk.homelinux.net>
+ * Manuel Lauss <manuel.lauss@gmail.com>
*
* 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
static int au1xpsc_i2s_probe(struct platform_device *pdev,
struct snd_soc_dai *dai)
{
+ return au1xpsc_i2s_workdata ? 0 : -ENODEV;
+}
+
+static void au1xpsc_i2s_remove(struct platform_device *pdev,
+ struct snd_soc_dai *dai)
+{
+}
+
+static struct snd_soc_dai_ops au1xpsc_i2s_dai_ops = {
+ .trigger = au1xpsc_i2s_trigger,
+ .hw_params = au1xpsc_i2s_hw_params,
+ .set_fmt = au1xpsc_i2s_set_fmt,
+};
+
+struct snd_soc_dai au1xpsc_i2s_dai = {
+ .name = "au1xpsc_i2s",
+ .probe = au1xpsc_i2s_probe,
+ .remove = au1xpsc_i2s_remove,
+ .playback = {
+ .rates = AU1XPSC_I2S_RATES,
+ .formats = AU1XPSC_I2S_FMTS,
+ .channels_min = 2,
+ .channels_max = 8, /* 2 without external help */
+ },
+ .capture = {
+ .rates = AU1XPSC_I2S_RATES,
+ .formats = AU1XPSC_I2S_FMTS,
+ .channels_min = 2,
+ .channels_max = 8, /* 2 without external help */
+ },
+ .ops = &au1xpsc_i2s_dai_ops,
+};
+EXPORT_SYMBOL(au1xpsc_i2s_dai);
+
+static int __init au1xpsc_i2s_drvprobe(struct platform_device *pdev)
+{
struct resource *r;
unsigned long sel;
int ret;
+ struct au1xpsc_audio_data *wd;
if (au1xpsc_i2s_workdata)
return -EBUSY;
- au1xpsc_i2s_workdata =
- kzalloc(sizeof(struct au1xpsc_audio_data), GFP_KERNEL);
- if (!au1xpsc_i2s_workdata)
+ wd = kzalloc(sizeof(struct au1xpsc_audio_data), GFP_KERNEL);
+ if (!wd)
return -ENOMEM;
r = platform_get_resource(pdev, IORESOURCE_MEM, 0);
}
ret = -EBUSY;
- au1xpsc_i2s_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_i2s");
- if (!au1xpsc_i2s_workdata->ioarea)
+ if (!wd->ioarea)
goto out0;
- au1xpsc_i2s_workdata->mmio = ioremap(r->start, 0xffff);
- if (!au1xpsc_i2s_workdata->mmio)
+ wd->mmio = ioremap(r->start, 0xffff);
+ if (!wd->mmio)
goto out1;
/* preserve PSC clock source set up by platform (dev.platform_data
* is already occupied by soc layer)
*/
- sel = au_readl(PSC_SEL(au1xpsc_i2s_workdata)) & PSC_SEL_CLK_MASK;
- au_writel(PSC_CTRL_DISABLE, PSC_CTRL(au1xpsc_i2s_workdata));
+ sel = au_readl(PSC_SEL(wd)) & PSC_SEL_CLK_MASK;
+ au_writel(PSC_CTRL_DISABLE, PSC_CTRL(wd));
au_sync();
- au_writel(PSC_SEL_PS_I2SMODE | sel, PSC_SEL(au1xpsc_i2s_workdata));
- au_writel(0, I2S_CFG(au1xpsc_i2s_workdata));
+ au_writel(PSC_SEL_PS_I2SMODE | sel, PSC_SEL(wd));
+ au_writel(0, I2S_CFG(wd));
au_sync();
/* preconfigure: set max rx/tx fifo depths */
- au1xpsc_i2s_workdata->cfg |=
- PSC_I2SCFG_RT_FIFO8 | PSC_I2SCFG_TT_FIFO8;
+ wd->cfg |= PSC_I2SCFG_RT_FIFO8 | PSC_I2SCFG_TT_FIFO8;
/* don't wait for I2S core to become ready now; clocks may not
* be running yet; depending on clock input for PSC a wait might
* time out.
*/
- return 0;
+ ret = snd_soc_register_dai(&au1xpsc_i2s_dai);
+ if (ret)
+ goto out1;
+ /* finally add the DMA device for this PSC */
+ wd->dmapd = au1xpsc_pcm_add(pdev);
+ if (wd->dmapd) {
+ platform_set_drvdata(pdev, wd);
+ au1xpsc_i2s_workdata = wd;
+ return 0;
+ }
+
+ snd_soc_unregister_dai(&au1xpsc_i2s_dai);
out1:
- release_resource(au1xpsc_i2s_workdata->ioarea);
- kfree(au1xpsc_i2s_workdata->ioarea);
+ release_resource(wd->ioarea);
+ kfree(wd->ioarea);
out0:
- kfree(au1xpsc_i2s_workdata);
- au1xpsc_i2s_workdata = NULL;
+ kfree(wd);
return ret;
}
-static void au1xpsc_i2s_remove(struct platform_device *pdev,
- struct snd_soc_dai *dai)
+static int __devexit au1xpsc_i2s_drvremove(struct platform_device *pdev)
{
- au_writel(0, I2S_CFG(au1xpsc_i2s_workdata));
+ struct au1xpsc_audio_data *wd = platform_get_drvdata(pdev);
+
+ if (wd->dmapd)
+ au1xpsc_pcm_destroy(wd->dmapd);
+
+ snd_soc_unregister_dai(&au1xpsc_i2s_dai);
+
+ au_writel(0, I2S_CFG(wd));
au_sync();
- au_writel(PSC_CTRL_DISABLE, PSC_CTRL(au1xpsc_i2s_workdata));
+ au_writel(PSC_CTRL_DISABLE, PSC_CTRL(wd));
au_sync();
- iounmap(au1xpsc_i2s_workdata->mmio);
- release_resource(au1xpsc_i2s_workdata->ioarea);
- kfree(au1xpsc_i2s_workdata->ioarea);
- kfree(au1xpsc_i2s_workdata);
- au1xpsc_i2s_workdata = NULL;
+ iounmap(wd->mmio);
+ release_resource(wd->ioarea);
+ kfree(wd->ioarea);
+ kfree(wd);
+
+ au1xpsc_i2s_workdata = NULL; /* MDEV */
+
+ return 0;
}
-static int au1xpsc_i2s_suspend(struct snd_soc_dai *cpu_dai)
+#ifdef CONFIG_PM
+static int au1xpsc_i2s_drvsuspend(struct device *dev)
{
+ struct au1xpsc_audio_data *wd = dev_get_drvdata(dev);
+
/* save interesting register and disable PSC */
- au1xpsc_i2s_workdata->pm[0] =
- au_readl(PSC_SEL(au1xpsc_i2s_workdata));
+ wd->pm[0] = au_readl(PSC_SEL(wd));
- au_writel(0, I2S_CFG(au1xpsc_i2s_workdata));
+ au_writel(0, I2S_CFG(wd));
au_sync();
- au_writel(PSC_CTRL_DISABLE, PSC_CTRL(au1xpsc_i2s_workdata));
+ au_writel(PSC_CTRL_DISABLE, PSC_CTRL(wd));
au_sync();
return 0;
}
-static int au1xpsc_i2s_resume(struct snd_soc_dai *cpu_dai)
+static int au1xpsc_i2s_drvresume(struct device *dev)
{
+ struct au1xpsc_audio_data *wd = dev_get_drvdata(dev);
+
/* select I2S mode and PSC clock */
- au_writel(PSC_CTRL_DISABLE, PSC_CTRL(au1xpsc_i2s_workdata));
+ au_writel(PSC_CTRL_DISABLE, PSC_CTRL(wd));
au_sync();
- au_writel(0, PSC_SEL(au1xpsc_i2s_workdata));
+ au_writel(0, PSC_SEL(wd));
au_sync();
- au_writel(au1xpsc_i2s_workdata->pm[0],
- PSC_SEL(au1xpsc_i2s_workdata));
+ au_writel(wd->pm[0], PSC_SEL(wd));
au_sync();
return 0;
}
-static struct snd_soc_dai_ops au1xpsc_i2s_dai_ops = {
- .trigger = au1xpsc_i2s_trigger,
- .hw_params = au1xpsc_i2s_hw_params,
- .set_fmt = au1xpsc_i2s_set_fmt,
+static struct dev_pm_ops au1xpsci2s_pmops = {
+ .suspend = au1xpsc_i2s_drvsuspend,
+ .resume = au1xpsc_i2s_drvresume,
};
-struct snd_soc_dai au1xpsc_i2s_dai = {
- .name = "au1xpsc_i2s",
- .probe = au1xpsc_i2s_probe,
- .remove = au1xpsc_i2s_remove,
- .suspend = au1xpsc_i2s_suspend,
- .resume = au1xpsc_i2s_resume,
- .playback = {
- .rates = AU1XPSC_I2S_RATES,
- .formats = AU1XPSC_I2S_FMTS,
- .channels_min = 2,
- .channels_max = 8, /* 2 without external help */
- },
- .capture = {
- .rates = AU1XPSC_I2S_RATES,
- .formats = AU1XPSC_I2S_FMTS,
- .channels_min = 2,
- .channels_max = 8, /* 2 without external help */
+#define AU1XPSCI2S_PMOPS &au1xpsci2s_pmops
+
+#else
+
+#define AU1XPSCI2S_PMOPS NULL
+
+#endif
+
+static struct platform_driver au1xpsc_i2s_driver = {
+ .driver = {
+ .name = "au1xpsc_i2s",
+ .owner = THIS_MODULE,
+ .pm = AU1XPSCI2S_PMOPS,
},
- .ops = &au1xpsc_i2s_dai_ops,
+ .probe = au1xpsc_i2s_drvprobe,
+ .remove = __devexit_p(au1xpsc_i2s_drvremove),
};
-EXPORT_SYMBOL(au1xpsc_i2s_dai);
-static int __init au1xpsc_i2s_init(void)
+static int __init au1xpsc_i2s_load(void)
{
au1xpsc_i2s_workdata = NULL;
- return snd_soc_register_dai(&au1xpsc_i2s_dai);
+ return platform_driver_register(&au1xpsc_i2s_driver);
}
-static void __exit au1xpsc_i2s_exit(void)
+static void __exit au1xpsc_i2s_unload(void)
{
- snd_soc_unregister_dai(&au1xpsc_i2s_dai);
+ platform_driver_unregister(&au1xpsc_i2s_driver);
}
-module_init(au1xpsc_i2s_init);
-module_exit(au1xpsc_i2s_exit);
+module_init(au1xpsc_i2s_load);
+module_exit(au1xpsc_i2s_unload);
MODULE_LICENSE("GPL");
MODULE_DESCRIPTION("Au12x0/Au1550 PSC I2S ALSA ASoC audio driver");
-MODULE_AUTHOR("Manuel Lauss <mano@roarinelk.homelinux.net>");
+MODULE_AUTHOR("Manuel Lauss");
projects / linux-flexiantxendom0-3.2.10.git / blobdiff