ASoC: au1x: convert to platform drivers.

Convert psc-ac97,i2s to platform drivers similar to the davinci ones.

Signed-off-by: Manuel Lauss <manuel.lauss@gmail.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>

1 files changed, 120 insertions, 69 deletions

diff --git a/sound/soc/au1x/psc-i2s.c b/sound/soc/au1x/psc-i2s.c
index bb589327ee32..0cf2ca61c776 100644
--- a/sound/soc/au1x/psc-i2s.c
+++ b/sound/soc/au1x/psc-i2s.c
@@ -2,7 +2,7 @@
  * 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
@@ -265,16 +265,52 @@ static int au1xpsc_i2s_trigger(struct snd_pcm_substream *substream, int cmd,
 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);
@@ -284,131 +320,146 @@ static int au1xpsc_i2s_probe(struct platform_device *pdev,
 	}
 
 	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");