1 files changed, 103 insertions, 257 deletions

diff --git a/sound/arm/pxa2xx-ac97.c b/sound/arm/pxa2xx-ac97.c
index 46052304e23..3a10df6688e 100644
--- a/sound/arm/pxa2xx-ac97.c
+++ b/sound/arm/pxa2xx-ac97.c
@@ -11,195 +11,60 @@
  */
 
 #include <linux/init.h>
+#include <linux/io.h>
 #include <linux/module.h>
-#include <linux/kernel.h>
-#include <linux/device.h>
-#include <linux/interrupt.h>
-#include <linux/wait.h>
-#include <linux/delay.h>
+#include <linux/platform_device.h>
+#include <linux/dmaengine.h>
 
-#include <sound/driver.h>
 #include <sound/core.h>
 #include <sound/pcm.h>
 #include <sound/ac97_codec.h>
 #include <sound/initval.h>
+#include <sound/pxa2xx-lib.h>
+#include <sound/dmaengine_pcm.h>
 
-#include <asm/irq.h>
-#include <asm/semaphore.h>
-#include <asm/hardware.h>
-#include <asm/arch/pxa-regs.h>
-#include <asm/arch/audio.h>
+#include <mach/regs-ac97.h>
+#include <mach/audio.h>
 
 #include "pxa2xx-pcm.h"
 
-
-static DECLARE_MUTEX(car_mutex);
-static DECLARE_WAIT_QUEUE_HEAD(gsr_wq);
-static volatile long gsr_bits;
-
-static unsigned short pxa2xx_ac97_read(ac97_t *ac97, unsigned short reg)
-{
-	unsigned short val = -1;
-	volatile u32 *reg_addr;
-
-	down(&car_mutex);
-	if (CAR & CAR_CAIP) {
-		printk(KERN_CRIT"%s: CAR_CAIP already set\n", __FUNCTION__);
-		goto out;
-	}
-
-	/* set up primary or secondary codec space */
-	reg_addr = (ac97->num & 1) ? &SAC_REG_BASE : &PAC_REG_BASE;
-	reg_addr += (reg >> 1);
-
-	/* start read access across the ac97 link */
-	gsr_bits = 0;
-	val = *reg_addr;
-	if (reg == AC97_GPIO_STATUS)
-		goto out;
-	wait_event_timeout(gsr_wq, gsr_bits & GSR_SDONE, 1);
-	if (!gsr_bits & GSR_SDONE) {
-		printk(KERN_ERR "%s: read error (ac97_reg=%d GSR=%#lx)\n",
-				__FUNCTION__, reg, gsr_bits);
-		val = -1;
-		goto out;
-	}
-
-	/* valid data now */
-	gsr_bits = 0;
-	val = *reg_addr;			
-	/* but we've just started another cycle... */
-	wait_event_timeout(gsr_wq, gsr_bits & GSR_SDONE, 1);
-
-out:	up(&car_mutex);
-	return val;
-}
-
-static void pxa2xx_ac97_write(ac97_t *ac97, unsigned short reg, unsigned short val)
-{
-	volatile u32 *reg_addr;
-
-	down(&car_mutex);
-
-	if (CAR & CAR_CAIP) {
-		printk(KERN_CRIT "%s: CAR_CAIP already set\n", __FUNCTION__);
-		goto out;
-	}
-
-	/* set up primary or secondary codec space */
-	reg_addr = (ac97->num & 1) ? &SAC_REG_BASE : &PAC_REG_BASE;
-	reg_addr += (reg >> 1);
-	gsr_bits = 0;
-	*reg_addr = val;
-	wait_event_timeout(gsr_wq, gsr_bits & GSR_CDONE, 1);
-	if (!gsr_bits & GSR_SDONE)
-		printk(KERN_ERR "%s: write error (ac97_reg=%d GSR=%#lx)\n",
-				__FUNCTION__, reg, gsr_bits);
-
-out:	up(&car_mutex);
-}
-
-static void pxa2xx_ac97_reset(ac97_t *ac97)
+static void pxa2xx_ac97_reset(struct snd_ac97 *ac97)
 {
-	/* First, try cold reset */
-	GCR &=  GCR_COLD_RST;  /* clear everything but nCRST */
-	GCR &= ~GCR_COLD_RST;  /* then assert nCRST */
-
-	gsr_bits = 0;
-#ifdef CONFIG_PXA27x
-	/* PXA27x Developers Manual section 13.5.2.2.1 */
-	pxa_set_cken(1 << 31, 1);
-	udelay(5);
-	pxa_set_cken(1 << 31, 0);
-	GCR = GCR_COLD_RST;
-	udelay(50);
-#else
-	GCR = GCR_COLD_RST;
-	GCR |= GCR_CDONE_IE|GCR_SDONE_IE;
-	wait_event_timeout(gsr_wq, gsr_bits & (GSR_PCR | GSR_SCR), 1);
-#endif
-
-	if (!((GSR | gsr_bits) & (GSR_PCR | GSR_SCR))) {
-		printk(KERN_INFO "%s: cold reset timeout (GSR=%#lx)\n",
-				 __FUNCTION__, gsr_bits);
-
-		/* let's try warm reset */
-		gsr_bits = 0;
-#ifdef CONFIG_PXA27x
-		/* warm reset broken on Bulverde,
-		   so manually keep AC97 reset high */
-		pxa_gpio_mode(113 | GPIO_OUT | GPIO_DFLT_HIGH); 
-		udelay(10);
-		GCR |= GCR_WARM_RST;
-		pxa_gpio_mode(113 | GPIO_ALT_FN_2_OUT);
-		udelay(50);
-#else
-		GCR |= GCR_WARM_RST|GCR_PRIRDY_IEN|GCR_SECRDY_IEN;;
-		wait_event_timeout(gsr_wq, gsr_bits & (GSR_PCR | GSR_SCR), 1);
-#endif			
-
-		if (!((GSR | gsr_bits) & (GSR_PCR | GSR_SCR)))
-			printk(KERN_INFO "%s: warm reset timeout (GSR=%#lx)\n",
-					 __FUNCTION__, gsr_bits);
-	}
-
-	GCR &= ~(GCR_PRIRDY_IEN|GCR_SECRDY_IEN);
-	GCR |= GCR_SDONE_IE|GCR_CDONE_IE;
-}
-
-static irqreturn_t pxa2xx_ac97_irq(int irq, void *dev_id, struct pt_regs *regs)
-{
-	long status;
-
-	status = GSR;
-	if (status) {
-		GSR = status;
-		gsr_bits |= status;
-		wake_up(&gsr_wq);
-
-#ifdef CONFIG_PXA27x
-		/* Although we don't use those we still need to clear them
-		   since they tend to spuriously trigger when MMC is used
-		   (hardware bug? go figure)... */
-		MISR = MISR_EOC;
-		PISR = PISR_EOC;
-		MCSR = MCSR_EOC;
-#endif
-
-		return IRQ_HANDLED;
+	if (!pxa2xx_ac97_try_cold_reset(ac97)) {
+		pxa2xx_ac97_try_warm_reset(ac97);
 	}
 
-	return IRQ_NONE;
+	pxa2xx_ac97_finish_reset(ac97);
 }
 
-static ac97_bus_ops_t pxa2xx_ac97_ops = {
+static struct snd_ac97_bus_ops pxa2xx_ac97_ops = {
 	.read	= pxa2xx_ac97_read,
 	.write	= pxa2xx_ac97_write,
 	.reset	= pxa2xx_ac97_reset,
 };
 
-static pxa2xx_pcm_dma_params_t pxa2xx_ac97_pcm_out = {
-	.name			= "AC97 PCM out",
-	.dev_addr		= __PREG(PCDR),
-	.drcmr			= &DRCMRTXPCDR,
-	.dcmd			= DCMD_INCSRCADDR | DCMD_FLOWTRG |
-				  DCMD_BURST32 | DCMD_WIDTH4,
+static unsigned long pxa2xx_ac97_pcm_out_req = 12;
+static struct snd_dmaengine_dai_dma_data pxa2xx_ac97_pcm_out = {
+	.addr		= __PREG(PCDR),
+	.addr_width	= DMA_SLAVE_BUSWIDTH_4_BYTES,
+	.maxburst	= 32,
+	.filter_data	= &pxa2xx_ac97_pcm_out_req,
 };
 
-static pxa2xx_pcm_dma_params_t pxa2xx_ac97_pcm_in = {
-	.name			= "AC97 PCM in",
-	.dev_addr		= __PREG(PCDR),
-	.drcmr			= &DRCMRRXPCDR,
-	.dcmd			= DCMD_INCTRGADDR | DCMD_FLOWSRC |
-				  DCMD_BURST32 | DCMD_WIDTH4,
+static unsigned long pxa2xx_ac97_pcm_in_req = 11;
+static struct snd_dmaengine_dai_dma_data pxa2xx_ac97_pcm_in = {
+	.addr		= __PREG(PCDR),
+	.addr_width	= DMA_SLAVE_BUSWIDTH_4_BYTES,
+	.maxburst	= 32,
+	.filter_data	= &pxa2xx_ac97_pcm_in_req,
 };
 
-static snd_pcm_t *pxa2xx_ac97_pcm;
-static ac97_t *pxa2xx_ac97_ac97;
+static struct snd_pcm *pxa2xx_ac97_pcm;
+static struct snd_ac97 *pxa2xx_ac97_ac97;
 
-static int pxa2xx_ac97_pcm_startup(snd_pcm_substream_t *substream)
+static int pxa2xx_ac97_pcm_startup(struct snd_pcm_substream *substream)
 {
-	snd_pcm_runtime_t *runtime = substream->runtime;
+	struct snd_pcm_runtime *runtime = substream->runtime;
 	pxa2xx_audio_ops_t *platform_ops;
 	int r;
 
@@ -218,7 +83,7 @@ static int pxa2xx_ac97_pcm_startup(snd_pcm_substream_t *substream)
 		return 0;
 }
 
-static void pxa2xx_ac97_pcm_shutdown(snd_pcm_substream_t *substream)
+static void pxa2xx_ac97_pcm_shutdown(struct snd_pcm_substream *substream)
 {
 	pxa2xx_audio_ops_t *platform_ops;
 
@@ -227,15 +92,15 @@ static void pxa2xx_ac97_pcm_shutdown(snd_pcm_substream_t *substream)
 		platform_ops->shutdown(substream, platform_ops->priv);
 }
 
-static int pxa2xx_ac97_pcm_prepare(snd_pcm_substream_t *substream)
+static int pxa2xx_ac97_pcm_prepare(struct snd_pcm_substream *substream)
 {
-	snd_pcm_runtime_t *runtime = substream->runtime;
+	struct snd_pcm_runtime *runtime = substream->runtime;
 	int reg = (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) ?
 		  AC97_PCM_FRONT_DAC_RATE : AC97_PCM_LR_ADC_RATE;
 	return snd_ac97_set_rate(pxa2xx_ac97_ac97, reg, runtime->rate);
 }
 
-static pxa2xx_pcm_client_t pxa2xx_ac97_pcm_client = {
+static struct pxa2xx_pcm_client pxa2xx_ac97_pcm_client = {
 	.playback_params	= &pxa2xx_ac97_pcm_out,
 	.capture_params		= &pxa2xx_ac97_pcm_in,
 	.startup		= pxa2xx_ac97_pcm_startup,
@@ -243,168 +108,149 @@ static pxa2xx_pcm_client_t pxa2xx_ac97_pcm_client = {
 	.prepare		= pxa2xx_ac97_pcm_prepare,
 };
 
-#ifdef CONFIG_PM
+#ifdef CONFIG_PM_SLEEP
 
-static int pxa2xx_ac97_do_suspend(snd_card_t *card, unsigned int state)
+static int pxa2xx_ac97_do_suspend(struct snd_card *card)
 {
-	if (card->power_state != SNDRV_CTL_POWER_D3cold) {
-		pxa2xx_audio_ops_t *platform_ops = card->dev->platform_data;
-		snd_pcm_suspend_all(pxa2xx_ac97_pcm);
-		snd_ac97_suspend(pxa2xx_ac97_ac97);
-		snd_power_change_state(card, SNDRV_CTL_POWER_D3cold);
-		if (platform_ops && platform_ops->suspend)
-			platform_ops->suspend(platform_ops->priv);
-		GCR |= GCR_ACLINK_OFF;
-		pxa_set_cken(CKEN2_AC97, 0);
-	}
+	pxa2xx_audio_ops_t *platform_ops = card->dev->platform_data;
 
-	return 0;
+	snd_power_change_state(card, SNDRV_CTL_POWER_D3cold);
+	snd_pcm_suspend_all(pxa2xx_ac97_pcm);
+	snd_ac97_suspend(pxa2xx_ac97_ac97);
+	if (platform_ops && platform_ops->suspend)
+		platform_ops->suspend(platform_ops->priv);
+
+	return pxa2xx_ac97_hw_suspend();
 }
 
-static int pxa2xx_ac97_do_resume(snd_card_t *card, unsigned int state)
+static int pxa2xx_ac97_do_resume(struct snd_card *card)
 {
-	if (card->power_state != SNDRV_CTL_POWER_D0) {
-		pxa2xx_audio_ops_t *platform_ops = card->dev->platform_data;
-		pxa_set_cken(CKEN2_AC97, 1);
-		if (platform_ops && platform_ops->resume)
-			platform_ops->resume(platform_ops->priv);
-		snd_ac97_resume(pxa2xx_ac97_ac97);
-		snd_power_change_state(card, SNDRV_CTL_POWER_D0);
-	}
+	pxa2xx_audio_ops_t *platform_ops = card->dev->platform_data;
+	int rc;
+
+	rc = pxa2xx_ac97_hw_resume();
+	if (rc)
+		return rc;
+
+	if (platform_ops && platform_ops->resume)
+		platform_ops->resume(platform_ops->priv);
+	snd_ac97_resume(pxa2xx_ac97_ac97);
+	snd_power_change_state(card, SNDRV_CTL_POWER_D0);
 
 	return 0;
 }
 
-static int pxa2xx_ac97_suspend(struct device *_dev, u32 state, u32 level)
+static int pxa2xx_ac97_suspend(struct device *dev)
 {
-	snd_card_t *card = dev_get_drvdata(_dev);
+	struct snd_card *card = dev_get_drvdata(dev);
 	int ret = 0;
 
-	if (card && level == SUSPEND_DISABLE)
-		ret = pxa2xx_ac97_do_suspend(card, SNDRV_CTL_POWER_D3cold);
+	if (card)
+		ret = pxa2xx_ac97_do_suspend(card);
 
 	return ret;
 }
 
-static int pxa2xx_ac97_resume(struct device *_dev, u32 level)
+static int pxa2xx_ac97_resume(struct device *dev)
 {
-	snd_card_t *card = dev_get_drvdata(_dev);
+	struct snd_card *card = dev_get_drvdata(dev);
 	int ret = 0;
 
-	if (card && level == RESUME_ENABLE)
-		ret = pxa2xx_ac97_do_resume(card, SNDRV_CTL_POWER_D0);
+	if (card)
+		ret = pxa2xx_ac97_do_resume(card);
 
 	return ret;
 }
 
-#else
-#define pxa2xx_ac97_suspend	NULL
-#define pxa2xx_ac97_resume	NULL
+static SIMPLE_DEV_PM_OPS(pxa2xx_ac97_pm_ops, pxa2xx_ac97_suspend, pxa2xx_ac97_resume);
 #endif
 
-static int pxa2xx_ac97_probe(struct device *dev)
+static int pxa2xx_ac97_probe(struct platform_device *dev)
 {
-	snd_card_t *card;
-	ac97_bus_t *ac97_bus;
-	ac97_template_t ac97_template;
+	struct snd_card *card;
+	struct snd_ac97_bus *ac97_bus;
+	struct snd_ac97_template ac97_template;
 	int ret;
+	pxa2xx_audio_ops_t *pdata = dev->dev.platform_data;
+
+	if (dev->id >= 0) {
+		dev_err(&dev->dev, "PXA2xx has only one AC97 port.\n");
+		ret = -ENXIO;
+		goto err_dev;
+	}
 
-	ret = -ENOMEM;
-	card = snd_card_new(SNDRV_DEFAULT_IDX1, SNDRV_DEFAULT_STR1,
-			    THIS_MODULE, 0);
-	if (!card)
+	ret = snd_card_new(&dev->dev, SNDRV_DEFAULT_IDX1, SNDRV_DEFAULT_STR1,
+			   THIS_MODULE, 0, &card);
+	if (ret < 0)
 		goto err;
 
-	card->dev = dev;
-	strncpy(card->driver, dev->driver->name, sizeof(card->driver));
+	strlcpy(card->driver, dev->dev.driver->name, sizeof(card->driver));
 
 	ret = pxa2xx_pcm_new(card, &pxa2xx_ac97_pcm_client, &pxa2xx_ac97_pcm);
 	if (ret)
 		goto err;
 
-	ret = request_irq(IRQ_AC97, pxa2xx_ac97_irq, 0, "AC97", NULL);
-	if (ret < 0)
+	ret = pxa2xx_ac97_hw_probe(dev);
+	if (ret)
 		goto err;
 
-	pxa_gpio_mode(GPIO31_SYNC_AC97_MD);
-	pxa_gpio_mode(GPIO30_SDATA_OUT_AC97_MD);
-	pxa_gpio_mode(GPIO28_BITCLK_AC97_MD);
-	pxa_gpio_mode(GPIO29_SDATA_IN_AC97_MD);
-#ifdef CONFIG_PXA27x
-	/* Use GPIO 113 as AC97 Reset on Bulverde */
-	pxa_gpio_mode(113 | GPIO_ALT_FN_2_OUT);
-#endif
-	pxa_set_cken(CKEN2_AC97, 1);
-
 	ret = snd_ac97_bus(card, 0, &pxa2xx_ac97_ops, NULL, &ac97_bus);
 	if (ret)
-		goto err;
+		goto err_remove;
 	memset(&ac97_template, 0, sizeof(ac97_template));
 	ret = snd_ac97_mixer(ac97_bus, &ac97_template, &pxa2xx_ac97_ac97);
 	if (ret)
-		goto err;
+		goto err_remove;
 
 	snprintf(card->shortname, sizeof(card->shortname),
 		 "%s", snd_ac97_get_short_name(pxa2xx_ac97_ac97));
 	snprintf(card->longname, sizeof(card->longname),
-		 "%s (%s)", dev->driver->name, card->mixername);
+		 "%s (%s)", dev->dev.driver->name, card->mixername);
 
-	snd_card_set_pm_callback(card, pxa2xx_ac97_do_suspend,
-				 pxa2xx_ac97_do_resume, NULL);
+	if (pdata && pdata->codec_pdata[0])
+		snd_ac97_dev_add_pdata(ac97_bus->codec[0], pdata->codec_pdata[0]);
 	ret = snd_card_register(card);
 	if (ret == 0) {
-		dev_set_drvdata(dev, card);
+		platform_set_drvdata(dev, card);
 		return 0;
 	}
 
- err:
+err_remove:
+	pxa2xx_ac97_hw_remove(dev);
+err:
 	if (card)
 		snd_card_free(card);
-	if (CKEN & CKEN2_AC97) {
-		GCR |= GCR_ACLINK_OFF;
-		free_irq(IRQ_AC97, NULL);
-		pxa_set_cken(CKEN2_AC97, 0);
-	}
+err_dev:
 	return ret;
 }
 
-static int pxa2xx_ac97_remove(struct device *dev)
+static int pxa2xx_ac97_remove(struct platform_device *dev)
 {
-	snd_card_t *card = dev_get_drvdata(dev);
+	struct snd_card *card = platform_get_drvdata(dev);
 
 	if (card) {
 		snd_card_free(card);
-		dev_set_drvdata(dev, NULL);
-		GCR |= GCR_ACLINK_OFF;
-		free_irq(IRQ_AC97, NULL);
-		pxa_set_cken(CKEN2_AC97, 0);
+		pxa2xx_ac97_hw_remove(dev);
 	}
 
 	return 0;
 }
 
-static struct device_driver pxa2xx_ac97_driver = {
-	.name		= "pxa2xx-ac97",
-	.bus		= &platform_bus_type,
+static struct platform_driver pxa2xx_ac97_driver = {
 	.probe		= pxa2xx_ac97_probe,
 	.remove		= pxa2xx_ac97_remove,
-	.suspend	= pxa2xx_ac97_suspend,
-	.resume		= pxa2xx_ac97_resume,
+	.driver		= {
+		.name	= "pxa2xx-ac97",
+		.owner	= THIS_MODULE,
+#ifdef CONFIG_PM_SLEEP
+		.pm	= &pxa2xx_ac97_pm_ops,
+#endif
+	},
 };
 
-static int __init pxa2xx_ac97_init(void)
-{
-	return driver_register(&pxa2xx_ac97_driver);
-}
-
-static void __exit pxa2xx_ac97_exit(void)
-{
-	driver_unregister(&pxa2xx_ac97_driver);
-}
-
-module_init(pxa2xx_ac97_init);
-module_exit(pxa2xx_ac97_exit);
+module_platform_driver(pxa2xx_ac97_driver);
 
 MODULE_AUTHOR("Nicolas Pitre");
 MODULE_DESCRIPTION("AC97 driver for the Intel PXA2xx chip");
 MODULE_LICENSE("GPL");
+MODULE_ALIAS("platform:pxa2xx-ac97");