diff --git a/sound/arm/aaci.c b/sound/arm/aaci.c
index 656e474..91acc9a 100644
--- a/sound/arm/aaci.c
+++ b/sound/arm/aaci.c
@@ -863,7 +863,6 @@
 	struct snd_ac97 *ac97;
 	int ret;
 
-	writel(0, aaci->base + AC97_POWERDOWN);
 	/*
 	 * Assert AACIRESET for 2us
 	 */
@@ -1047,7 +1046,11 @@
 
 	writel(0x1fff, aaci->base + AACI_INTCLR);
 	writel(aaci->maincr, aaci->base + AACI_MAINCR);
-
+	/*
+	 * Fix: ac97 read back fail errors by reading
+	 * from any arbitrary aaci register.
+	 */
+	readl(aaci->base + AACI_CSCH1);
 	ret = aaci_probe_ac97(aaci);
 	if (ret)
 		goto out;
diff --git a/sound/atmel/Kconfig b/sound/atmel/Kconfig
index 6c228a9..94de43a 100644
--- a/sound/atmel/Kconfig
+++ b/sound/atmel/Kconfig
@@ -12,7 +12,7 @@
 	tristate "Atmel AC97 Controller (AC97C) driver"
 	select SND_PCM
 	select SND_AC97_CODEC
-	depends on DW_DMAC && AVR32
+	depends on (DW_DMAC && AVR32) || ARCH_AT91
 	help
 	  ALSA sound driver for the Atmel AC97 controller.
 
diff --git a/sound/atmel/ac97c.c b/sound/atmel/ac97c.c
index 0c0f877..428121a 100644
--- a/sound/atmel/ac97c.c
+++ b/sound/atmel/ac97c.c
@@ -13,6 +13,7 @@
 #include <linux/device.h>
 #include <linux/dmaengine.h>
 #include <linux/dma-mapping.h>
+#include <linux/atmel_pdc.h>
 #include <linux/init.h>
 #include <linux/interrupt.h>
 #include <linux/module.h>
@@ -31,6 +32,10 @@
 
 #include <linux/dw_dmac.h>
 
+#include <mach/cpu.h>
+#include <mach/hardware.h>
+#include <mach/gpio.h>
+
 #include "ac97c.h"
 
 enum {
@@ -63,6 +68,7 @@
 	u64				cur_format;
 	unsigned int			cur_rate;
 	unsigned long			flags;
+	int				playback_period, capture_period;
 	/* Serialize access to opened variable */
 	spinlock_t			lock;
 	void __iomem			*regs;
@@ -242,10 +248,12 @@
 	if (retval < 0)
 		return retval;
 	/* snd_pcm_lib_malloc_pages returns 1 if buffer is changed. */
-	if (retval == 1)
-		if (test_and_clear_bit(DMA_TX_READY, &chip->flags))
-			dw_dma_cyclic_free(chip->dma.tx_chan);
-
+	if (cpu_is_at32ap7000()) {
+		/* snd_pcm_lib_malloc_pages returns 1 if buffer is changed. */
+		if (retval == 1)
+			if (test_and_clear_bit(DMA_TX_READY, &chip->flags))
+				dw_dma_cyclic_free(chip->dma.tx_chan);
+	}
 	/* Set restrictions to params. */
 	mutex_lock(&opened_mutex);
 	chip->cur_rate = params_rate(hw_params);
@@ -266,9 +274,14 @@
 	if (retval < 0)
 		return retval;
 	/* snd_pcm_lib_malloc_pages returns 1 if buffer is changed. */
-	if (retval == 1)
-		if (test_and_clear_bit(DMA_RX_READY, &chip->flags))
-			dw_dma_cyclic_free(chip->dma.rx_chan);
+	if (cpu_is_at32ap7000()) {
+		if (retval < 0)
+			return retval;
+		/* snd_pcm_lib_malloc_pages returns 1 if buffer is changed. */
+		if (retval == 1)
+			if (test_and_clear_bit(DMA_RX_READY, &chip->flags))
+				dw_dma_cyclic_free(chip->dma.rx_chan);
+	}
 
 	/* Set restrictions to params. */
 	mutex_lock(&opened_mutex);
@@ -282,16 +295,20 @@
 static int atmel_ac97c_playback_hw_free(struct snd_pcm_substream *substream)
 {
 	struct atmel_ac97c *chip = snd_pcm_substream_chip(substream);
-	if (test_and_clear_bit(DMA_TX_READY, &chip->flags))
-		dw_dma_cyclic_free(chip->dma.tx_chan);
+	if (cpu_is_at32ap7000()) {
+		if (test_and_clear_bit(DMA_TX_READY, &chip->flags))
+			dw_dma_cyclic_free(chip->dma.tx_chan);
+	}
 	return snd_pcm_lib_free_pages(substream);
 }
 
 static int atmel_ac97c_capture_hw_free(struct snd_pcm_substream *substream)
 {
 	struct atmel_ac97c *chip = snd_pcm_substream_chip(substream);
-	if (test_and_clear_bit(DMA_RX_READY, &chip->flags))
-		dw_dma_cyclic_free(chip->dma.rx_chan);
+	if (cpu_is_at32ap7000()) {
+		if (test_and_clear_bit(DMA_RX_READY, &chip->flags))
+			dw_dma_cyclic_free(chip->dma.rx_chan);
+	}
 	return snd_pcm_lib_free_pages(substream);
 }
 
@@ -299,9 +316,11 @@
 {
 	struct atmel_ac97c *chip = snd_pcm_substream_chip(substream);
 	struct snd_pcm_runtime *runtime = substream->runtime;
+	int block_size = frames_to_bytes(runtime, runtime->period_size);
 	unsigned long word = ac97c_readl(chip, OCA);
 	int retval;
 
+	chip->playback_period = 0;
 	word &= ~(AC97C_CH_MASK(PCM_LEFT) | AC97C_CH_MASK(PCM_RIGHT));
 
 	/* assign channels to AC97C channel A */
@@ -320,11 +339,16 @@
 	ac97c_writel(chip, OCA, word);
 
 	/* configure sample format and size */
-	word = AC97C_CMR_DMAEN | AC97C_CMR_SIZE_16;
+	word = ac97c_readl(chip, CAMR);
+	if (chip->opened <= 1)
+		word = AC97C_CMR_DMAEN | AC97C_CMR_SIZE_16;
+	else
+		word |= AC97C_CMR_DMAEN | AC97C_CMR_SIZE_16;
 
 	switch (runtime->format) {
 	case SNDRV_PCM_FORMAT_S16_LE:
-		word |= AC97C_CMR_CEM_LITTLE;
+		if (cpu_is_at32ap7000())
+			word |= AC97C_CMR_CEM_LITTLE;
 		break;
 	case SNDRV_PCM_FORMAT_S16_BE: /* fall through */
 		word &= ~(AC97C_CMR_CEM_LITTLE);
@@ -363,9 +387,18 @@
 		dev_dbg(&chip->pdev->dev, "could not set rate %d Hz\n",
 				runtime->rate);
 
-	if (!test_bit(DMA_TX_READY, &chip->flags))
-		retval = atmel_ac97c_prepare_dma(chip, substream,
-				DMA_TO_DEVICE);
+	if (cpu_is_at32ap7000()) {
+		if (!test_bit(DMA_TX_READY, &chip->flags))
+			retval = atmel_ac97c_prepare_dma(chip, substream,
+					DMA_TO_DEVICE);
+	} else {
+		/* Initialize and start the PDC */
+		writel(runtime->dma_addr, chip->regs + ATMEL_PDC_TPR);
+		writel(block_size / 2, chip->regs + ATMEL_PDC_TCR);
+		writel(runtime->dma_addr + block_size,
+				chip->regs + ATMEL_PDC_TNPR);
+		writel(block_size / 2, chip->regs + ATMEL_PDC_TNCR);
+	}
 
 	return retval;
 }
@@ -374,9 +407,11 @@
 {
 	struct atmel_ac97c *chip = snd_pcm_substream_chip(substream);
 	struct snd_pcm_runtime *runtime = substream->runtime;
+	int block_size = frames_to_bytes(runtime, runtime->period_size);
 	unsigned long word = ac97c_readl(chip, ICA);
 	int retval;
 
+	chip->capture_period = 0;
 	word &= ~(AC97C_CH_MASK(PCM_LEFT) | AC97C_CH_MASK(PCM_RIGHT));
 
 	/* assign channels to AC97C channel A */
@@ -395,11 +430,16 @@
 	ac97c_writel(chip, ICA, word);
 
 	/* configure sample format and size */
-	word = AC97C_CMR_DMAEN | AC97C_CMR_SIZE_16;
+	word = ac97c_readl(chip, CAMR);
+	if (chip->opened <= 1)
+		word = AC97C_CMR_DMAEN | AC97C_CMR_SIZE_16;
+	else
+		word |= AC97C_CMR_DMAEN | AC97C_CMR_SIZE_16;
 
 	switch (runtime->format) {
 	case SNDRV_PCM_FORMAT_S16_LE:
-		word |= AC97C_CMR_CEM_LITTLE;
+		if (cpu_is_at32ap7000())
+			word |= AC97C_CMR_CEM_LITTLE;
 		break;
 	case SNDRV_PCM_FORMAT_S16_BE: /* fall through */
 		word &= ~(AC97C_CMR_CEM_LITTLE);
@@ -438,9 +478,18 @@
 		dev_dbg(&chip->pdev->dev, "could not set rate %d Hz\n",
 				runtime->rate);
 
-	if (!test_bit(DMA_RX_READY, &chip->flags))
-		retval = atmel_ac97c_prepare_dma(chip, substream,
-				DMA_FROM_DEVICE);
+	if (cpu_is_at32ap7000()) {
+		if (!test_bit(DMA_RX_READY, &chip->flags))
+			retval = atmel_ac97c_prepare_dma(chip, substream,
+					DMA_FROM_DEVICE);
+	} else {
+		/* Initialize and start the PDC */
+		writel(runtime->dma_addr, chip->regs + ATMEL_PDC_RPR);
+		writel(block_size / 2, chip->regs + ATMEL_PDC_RCR);
+		writel(runtime->dma_addr + block_size,
+				chip->regs + ATMEL_PDC_RNPR);
+		writel(block_size / 2, chip->regs + ATMEL_PDC_RNCR);
+	}
 
 	return retval;
 }
@@ -449,7 +498,7 @@
 atmel_ac97c_playback_trigger(struct snd_pcm_substream *substream, int cmd)
 {
 	struct atmel_ac97c *chip = snd_pcm_substream_chip(substream);
-	unsigned long camr;
+	unsigned long camr, ptcr = 0;
 	int retval = 0;
 
 	camr = ac97c_readl(chip, CAMR);
@@ -458,15 +507,22 @@
 	case SNDRV_PCM_TRIGGER_PAUSE_RELEASE: /* fall through */
 	case SNDRV_PCM_TRIGGER_RESUME: /* fall through */
 	case SNDRV_PCM_TRIGGER_START:
-		retval = dw_dma_cyclic_start(chip->dma.tx_chan);
-		if (retval)
-			goto out;
-		camr |= AC97C_CMR_CENA;
+		if (cpu_is_at32ap7000()) {
+			retval = dw_dma_cyclic_start(chip->dma.tx_chan);
+			if (retval)
+				goto out;
+		} else {
+			ptcr = ATMEL_PDC_TXTEN;
+		}
+		camr |= AC97C_CMR_CENA | AC97C_CSR_ENDTX;
 		break;
 	case SNDRV_PCM_TRIGGER_PAUSE_PUSH: /* fall through */
 	case SNDRV_PCM_TRIGGER_SUSPEND: /* fall through */
 	case SNDRV_PCM_TRIGGER_STOP:
-		dw_dma_cyclic_stop(chip->dma.tx_chan);
+		if (cpu_is_at32ap7000())
+			dw_dma_cyclic_stop(chip->dma.tx_chan);
+		else
+			ptcr |= ATMEL_PDC_TXTDIS;
 		if (chip->opened <= 1)
 			camr &= ~AC97C_CMR_CENA;
 		break;
@@ -476,6 +532,8 @@
 	}
 
 	ac97c_writel(chip, CAMR, camr);
+	if (!cpu_is_at32ap7000())
+		writel(ptcr, chip->regs + ATMEL_PDC_PTCR);
 out:
 	return retval;
 }
@@ -484,24 +542,32 @@
 atmel_ac97c_capture_trigger(struct snd_pcm_substream *substream, int cmd)
 {
 	struct atmel_ac97c *chip = snd_pcm_substream_chip(substream);
-	unsigned long camr;
+	unsigned long camr, ptcr = 0;
 	int retval = 0;
 
 	camr = ac97c_readl(chip, CAMR);
+	ptcr = readl(chip->regs + ATMEL_PDC_PTSR);
 
 	switch (cmd) {
 	case SNDRV_PCM_TRIGGER_PAUSE_RELEASE: /* fall through */
 	case SNDRV_PCM_TRIGGER_RESUME: /* fall through */
 	case SNDRV_PCM_TRIGGER_START:
-		retval = dw_dma_cyclic_start(chip->dma.rx_chan);
-		if (retval)
-			goto out;
-		camr |= AC97C_CMR_CENA;
+		if (cpu_is_at32ap7000()) {
+			retval = dw_dma_cyclic_start(chip->dma.rx_chan);
+			if (retval)
+				goto out;
+		} else {
+			ptcr = ATMEL_PDC_RXTEN;
+		}
+		camr |= AC97C_CMR_CENA | AC97C_CSR_ENDRX;
 		break;
 	case SNDRV_PCM_TRIGGER_PAUSE_PUSH: /* fall through */
 	case SNDRV_PCM_TRIGGER_SUSPEND: /* fall through */
 	case SNDRV_PCM_TRIGGER_STOP:
-		dw_dma_cyclic_stop(chip->dma.rx_chan);
+		if (cpu_is_at32ap7000())
+			dw_dma_cyclic_stop(chip->dma.rx_chan);
+		else
+			ptcr |= (ATMEL_PDC_RXTDIS);
 		if (chip->opened <= 1)
 			camr &= ~AC97C_CMR_CENA;
 		break;
@@ -511,6 +577,8 @@
 	}
 
 	ac97c_writel(chip, CAMR, camr);
+	if (!cpu_is_at32ap7000())
+		writel(ptcr, chip->regs + ATMEL_PDC_PTCR);
 out:
 	return retval;
 }
@@ -523,7 +591,10 @@
 	snd_pcm_uframes_t	frames;
 	unsigned long		bytes;
 
-	bytes = dw_dma_get_src_addr(chip->dma.tx_chan);
+	if (cpu_is_at32ap7000())
+		bytes = dw_dma_get_src_addr(chip->dma.tx_chan);
+	else
+		bytes = readl(chip->regs + ATMEL_PDC_TPR);
 	bytes -= runtime->dma_addr;
 
 	frames = bytes_to_frames(runtime, bytes);
@@ -540,7 +611,10 @@
 	snd_pcm_uframes_t	frames;
 	unsigned long		bytes;
 
-	bytes = dw_dma_get_dst_addr(chip->dma.rx_chan);
+	if (cpu_is_at32ap7000())
+		bytes = dw_dma_get_dst_addr(chip->dma.rx_chan);
+	else
+		bytes = readl(chip->regs + ATMEL_PDC_RPR);
 	bytes -= runtime->dma_addr;
 
 	frames = bytes_to_frames(runtime, bytes);
@@ -578,8 +652,11 @@
 	u32			sr     = ac97c_readl(chip, SR);
 	u32			casr   = ac97c_readl(chip, CASR);
 	u32			cosr   = ac97c_readl(chip, COSR);
+	u32			camr   = ac97c_readl(chip, CAMR);
 
 	if (sr & AC97C_SR_CAEVT) {
+		struct snd_pcm_runtime *runtime;
+		int offset, next_period, block_size;
 		dev_info(&chip->pdev->dev, "channel A event%s%s%s%s%s%s\n",
 				casr & AC97C_CSR_OVRUN   ? " OVRUN"   : "",
 				casr & AC97C_CSR_RXRDY   ? " RXRDY"   : "",
@@ -587,6 +664,50 @@
 				casr & AC97C_CSR_TXEMPTY ? " TXEMPTY" : "",
 				casr & AC97C_CSR_TXRDY   ? " TXRDY"   : "",
 				!casr                    ? " NONE"    : "");
+		if (!cpu_is_at32ap7000()) {
+			if ((casr & camr) & AC97C_CSR_ENDTX) {
+				runtime = chip->playback_substream->runtime;
+				block_size = frames_to_bytes(runtime,
+						runtime->period_size);
+				chip->playback_period++;
+
+				if (chip->playback_period == runtime->periods)
+					chip->playback_period = 0;
+				next_period = chip->playback_period + 1;
+				if (next_period == runtime->periods)
+					next_period = 0;
+
+				offset = block_size * next_period;
+
+				writel(runtime->dma_addr + offset,
+						chip->regs + ATMEL_PDC_TNPR);
+				writel(block_size / 2,
+						chip->regs + ATMEL_PDC_TNCR);
+
+				snd_pcm_period_elapsed(
+						chip->playback_substream);
+			}
+			if ((casr & camr) & AC97C_CSR_ENDRX) {
+				runtime = chip->capture_substream->runtime;
+				block_size = frames_to_bytes(runtime,
+						runtime->period_size);
+				chip->capture_period++;
+
+				if (chip->capture_period == runtime->periods)
+					chip->capture_period = 0;
+				next_period = chip->capture_period + 1;
+				if (next_period == runtime->periods)
+					next_period = 0;
+
+				offset = block_size * next_period;
+
+				writel(runtime->dma_addr + offset,
+						chip->regs + ATMEL_PDC_RNPR);
+				writel(block_size / 2,
+						chip->regs + ATMEL_PDC_RNCR);
+				snd_pcm_period_elapsed(chip->capture_substream);
+			}
+		}
 		retval = IRQ_HANDLED;
 	}
 
@@ -608,15 +729,50 @@
 	return retval;
 }
 
+static struct ac97_pcm at91_ac97_pcm_defs[] __devinitdata = {
+	/* Playback */
+	{
+		.exclusive = 1,
+		.r = { {
+			.slots = ((1 << AC97_SLOT_PCM_LEFT)
+				  | (1 << AC97_SLOT_PCM_RIGHT)),
+		} },
+	},
+	/* PCM in */
+	{
+		.stream = 1,
+		.exclusive = 1,
+		.r = { {
+			.slots = ((1 << AC97_SLOT_PCM_LEFT)
+					| (1 << AC97_SLOT_PCM_RIGHT)),
+		} }
+	},
+	/* Mic in */
+	{
+		.stream = 1,
+		.exclusive = 1,
+		.r = { {
+			.slots = (1<<AC97_SLOT_MIC),
+		} }
+	},
+};
+
 static int __devinit atmel_ac97c_pcm_new(struct atmel_ac97c *chip)
 {
 	struct snd_pcm		*pcm;
 	struct snd_pcm_hardware	hw = atmel_ac97c_hw;
-	int			capture, playback, retval;
+	int			capture, playback, retval, err;
 
 	capture = test_bit(DMA_RX_CHAN_PRESENT, &chip->flags);
 	playback = test_bit(DMA_TX_CHAN_PRESENT, &chip->flags);
 
+	if (!cpu_is_at32ap7000()) {
+		err = snd_ac97_pcm_assign(chip->ac97_bus,
+				ARRAY_SIZE(at91_ac97_pcm_defs),
+				at91_ac97_pcm_defs);
+		if (err)
+			return err;
+	}
 	retval = snd_pcm_new(chip->card, chip->card->shortname,
 			chip->pdev->id, playback, capture, &pcm);
 	if (retval)
@@ -775,7 +931,12 @@
 		return -ENXIO;
 	}
 
-	pclk = clk_get(&pdev->dev, "pclk");
+	if (cpu_is_at32ap7000()) {
+		pclk = clk_get(&pdev->dev, "pclk");
+	} else {
+		pclk = clk_get(&pdev->dev, "ac97_clk");
+	}
+
 	if (IS_ERR(pclk)) {
 		dev_dbg(&pdev->dev, "no peripheral clock\n");
 		return PTR_ERR(pclk);
@@ -844,43 +1005,52 @@
 		goto err_ac97_bus;
 	}
 
-	if (pdata->rx_dws.dma_dev) {
-		struct dw_dma_slave *dws = &pdata->rx_dws;
-		dma_cap_mask_t mask;
+	if (cpu_is_at32ap7000()) {
+		if (pdata->rx_dws.dma_dev) {
+			struct dw_dma_slave *dws = &pdata->rx_dws;
+			dma_cap_mask_t mask;
 
-		dws->rx_reg = regs->start + AC97C_CARHR + 2;
+			dws->rx_reg = regs->start + AC97C_CARHR + 2;
 
-		dma_cap_zero(mask);
-		dma_cap_set(DMA_SLAVE, mask);
+			dma_cap_zero(mask);
+			dma_cap_set(DMA_SLAVE, mask);
 
-		chip->dma.rx_chan = dma_request_channel(mask, filter, dws);
+			chip->dma.rx_chan = dma_request_channel(mask, filter,
+								dws);
 
-		dev_info(&chip->pdev->dev, "using %s for DMA RX\n",
+			dev_info(&chip->pdev->dev, "using %s for DMA RX\n",
 				dev_name(&chip->dma.rx_chan->dev->device));
-		set_bit(DMA_RX_CHAN_PRESENT, &chip->flags);
-	}
+			set_bit(DMA_RX_CHAN_PRESENT, &chip->flags);
+		}
 
-	if (pdata->tx_dws.dma_dev) {
-		struct dw_dma_slave *dws = &pdata->tx_dws;
-		dma_cap_mask_t mask;
+		if (pdata->tx_dws.dma_dev) {
+			struct dw_dma_slave *dws = &pdata->tx_dws;
+			dma_cap_mask_t mask;
 
-		dws->tx_reg = regs->start + AC97C_CATHR + 2;
+			dws->tx_reg = regs->start + AC97C_CATHR + 2;
 
-		dma_cap_zero(mask);
-		dma_cap_set(DMA_SLAVE, mask);
+			dma_cap_zero(mask);
+			dma_cap_set(DMA_SLAVE, mask);
 
-		chip->dma.tx_chan = dma_request_channel(mask, filter, dws);
+			chip->dma.tx_chan = dma_request_channel(mask, filter,
+								dws);
 
-		dev_info(&chip->pdev->dev, "using %s for DMA TX\n",
+			dev_info(&chip->pdev->dev, "using %s for DMA TX\n",
 				dev_name(&chip->dma.tx_chan->dev->device));
-		set_bit(DMA_TX_CHAN_PRESENT, &chip->flags);
-	}
+			set_bit(DMA_TX_CHAN_PRESENT, &chip->flags);
+		}
 
-	if (!test_bit(DMA_RX_CHAN_PRESENT, &chip->flags) &&
-			!test_bit(DMA_TX_CHAN_PRESENT, &chip->flags)) {
-		dev_dbg(&pdev->dev, "DMA not available\n");
-		retval = -ENODEV;
-		goto err_dma;
+		if (!test_bit(DMA_RX_CHAN_PRESENT, &chip->flags) &&
+				!test_bit(DMA_TX_CHAN_PRESENT, &chip->flags)) {
+			dev_dbg(&pdev->dev, "DMA not available\n");
+			retval = -ENODEV;
+			goto err_dma;
+		}
+	} else {
+		/* Just pretend that we have DMA channel(for at91 i is actually
+		 * the PDC) */
+		set_bit(DMA_RX_CHAN_PRESENT, &chip->flags);
+		set_bit(DMA_TX_CHAN_PRESENT, &chip->flags);
 	}
 
 	retval = atmel_ac97c_pcm_new(chip);
@@ -897,20 +1067,22 @@
 
 	platform_set_drvdata(pdev, card);
 
-	dev_info(&pdev->dev, "Atmel AC97 controller at 0x%p\n",
-			chip->regs);
+	dev_info(&pdev->dev, "Atmel AC97 controller at 0x%p, irq = %d\n",
+			chip->regs, irq);
 
 	return 0;
 
 err_dma:
-	if (test_bit(DMA_RX_CHAN_PRESENT, &chip->flags))
-		dma_release_channel(chip->dma.rx_chan);
-	if (test_bit(DMA_TX_CHAN_PRESENT, &chip->flags))
-		dma_release_channel(chip->dma.tx_chan);
-	clear_bit(DMA_RX_CHAN_PRESENT, &chip->flags);
-	clear_bit(DMA_TX_CHAN_PRESENT, &chip->flags);
-	chip->dma.rx_chan = NULL;
-	chip->dma.tx_chan = NULL;
+	if (cpu_is_at32ap7000()) {
+		if (test_bit(DMA_RX_CHAN_PRESENT, &chip->flags))
+			dma_release_channel(chip->dma.rx_chan);
+		if (test_bit(DMA_TX_CHAN_PRESENT, &chip->flags))
+			dma_release_channel(chip->dma.tx_chan);
+		clear_bit(DMA_RX_CHAN_PRESENT, &chip->flags);
+		clear_bit(DMA_TX_CHAN_PRESENT, &chip->flags);
+		chip->dma.rx_chan = NULL;
+		chip->dma.tx_chan = NULL;
+	}
 err_ac97_bus:
 	snd_card_set_dev(card, NULL);
 
@@ -934,10 +1106,12 @@
 	struct snd_card *card = platform_get_drvdata(pdev);
 	struct atmel_ac97c *chip = card->private_data;
 
-	if (test_bit(DMA_RX_READY, &chip->flags))
-		dw_dma_cyclic_stop(chip->dma.rx_chan);
-	if (test_bit(DMA_TX_READY, &chip->flags))
-		dw_dma_cyclic_stop(chip->dma.tx_chan);
+	if (cpu_is_at32ap7000()) {
+		if (test_bit(DMA_RX_READY, &chip->flags))
+			dw_dma_cyclic_stop(chip->dma.rx_chan);
+		if (test_bit(DMA_TX_READY, &chip->flags))
+			dw_dma_cyclic_stop(chip->dma.tx_chan);
+	}
 	clk_disable(chip->pclk);
 
 	return 0;
@@ -949,11 +1123,12 @@
 	struct atmel_ac97c *chip = card->private_data;
 
 	clk_enable(chip->pclk);
-	if (test_bit(DMA_RX_READY, &chip->flags))
-		dw_dma_cyclic_start(chip->dma.rx_chan);
-	if (test_bit(DMA_TX_READY, &chip->flags))
-		dw_dma_cyclic_start(chip->dma.tx_chan);
-
+	if (cpu_is_at32ap7000()) {
+		if (test_bit(DMA_RX_READY, &chip->flags))
+			dw_dma_cyclic_start(chip->dma.rx_chan);
+		if (test_bit(DMA_TX_READY, &chip->flags))
+			dw_dma_cyclic_start(chip->dma.tx_chan);
+	}
 	return 0;
 }
 #else
@@ -978,14 +1153,16 @@
 	iounmap(chip->regs);
 	free_irq(chip->irq, chip);
 
-	if (test_bit(DMA_RX_CHAN_PRESENT, &chip->flags))
-		dma_release_channel(chip->dma.rx_chan);
-	if (test_bit(DMA_TX_CHAN_PRESENT, &chip->flags))
-		dma_release_channel(chip->dma.tx_chan);
-	clear_bit(DMA_RX_CHAN_PRESENT, &chip->flags);
-	clear_bit(DMA_TX_CHAN_PRESENT, &chip->flags);
-	chip->dma.rx_chan = NULL;
-	chip->dma.tx_chan = NULL;
+	if (cpu_is_at32ap7000()) {
+		if (test_bit(DMA_RX_CHAN_PRESENT, &chip->flags))
+			dma_release_channel(chip->dma.rx_chan);
+		if (test_bit(DMA_TX_CHAN_PRESENT, &chip->flags))
+			dma_release_channel(chip->dma.tx_chan);
+		clear_bit(DMA_RX_CHAN_PRESENT, &chip->flags);
+		clear_bit(DMA_TX_CHAN_PRESENT, &chip->flags);
+		chip->dma.rx_chan = NULL;
+		chip->dma.tx_chan = NULL;
+	}
 
 	snd_card_set_dev(card, NULL);
 	snd_card_free(card);
diff --git a/sound/i2c/i2c.c b/sound/i2c/i2c.c
index 5c0c77d..eb7c7d0 100644
--- a/sound/i2c/i2c.c
+++ b/sound/i2c/i2c.c
@@ -98,7 +98,8 @@
 		bus->master = master;
 	}
 	strlcpy(bus->name, name, sizeof(bus->name));
-	if ((err = snd_device_new(card, SNDRV_DEV_BUS, bus, &ops)) < 0) {
+	err = snd_device_new(card, SNDRV_DEV_BUS, bus, &ops);
+	if (err < 0) {
 		snd_i2c_bus_free(bus);
 		return err;
 	}
@@ -246,7 +247,8 @@
 
 	for (i = 7; i >= 0; i--)
 		snd_i2c_bit_send(bus, !!(data & (1 << i)));
-	if ((err = snd_i2c_bit_ack(bus)) < 0)
+	err = snd_i2c_bit_ack(bus);
+	if (err < 0)
 		return err;
 	return 0;
 }
@@ -278,12 +280,14 @@
 	if (device->flags & SND_I2C_DEVICE_ADDRTEN)
 		return -EIO;		/* not yet implemented */
 	snd_i2c_bit_start(bus);
-	if ((err = snd_i2c_bit_sendbyte(bus, device->addr << 1)) < 0) {
+	err = snd_i2c_bit_sendbyte(bus, device->addr << 1);
+	if (err < 0) {
 		snd_i2c_bit_hw_stop(bus);
 		return err;
 	}
 	while (count-- > 0) {
-		if ((err = snd_i2c_bit_sendbyte(bus, *bytes++)) < 0) {
+		err = snd_i2c_bit_sendbyte(bus, *bytes++);
+		if (err < 0) {
 			snd_i2c_bit_hw_stop(bus);
 			return err;
 		}
@@ -302,12 +306,14 @@
 	if (device->flags & SND_I2C_DEVICE_ADDRTEN)
 		return -EIO;		/* not yet implemented */
 	snd_i2c_bit_start(bus);
-	if ((err = snd_i2c_bit_sendbyte(bus, (device->addr << 1) | 1)) < 0) {
+	err = snd_i2c_bit_sendbyte(bus, (device->addr << 1) | 1);
+	if (err < 0) {
 		snd_i2c_bit_hw_stop(bus);
 		return err;
 	}
 	while (count-- > 0) {
-		if ((err = snd_i2c_bit_readbyte(bus, count == 0)) < 0) {
+		err = snd_i2c_bit_readbyte(bus, count == 0);
+		if (err < 0) {
 			snd_i2c_bit_hw_stop(bus);
 			return err;
 		}
diff --git a/sound/pci/ice1712/aureon.c b/sound/pci/ice1712/aureon.c
index 9e66f6d..2f62522 100644
--- a/sound/pci/ice1712/aureon.c
+++ b/sound/pci/ice1712/aureon.c
@@ -1956,11 +1956,10 @@
 	return 0;
 }
 
-
 /*
- * initialize the chip
+ * reset the chip
  */
-static int __devinit aureon_init(struct snd_ice1712 *ice)
+static int aureon_reset(struct snd_ice1712 *ice)
 {
 	static const unsigned short wm_inits_aureon[] = {
 		/* These come first to reduce init pop noise */
@@ -2047,30 +2046,10 @@
 		0x0605, /* slave, 24bit, MSB on second OSCLK, SDOUT for right channel when OLRCK is high */
 		(unsigned short)-1
 	};
-	struct aureon_spec *spec;
 	unsigned int tmp;
 	const unsigned short *p;
-	int err, i;
-
-	spec = kzalloc(sizeof(*spec), GFP_KERNEL);
-	if (!spec)
-		return -ENOMEM;
-	ice->spec = spec;
-
-	if (ice->eeprom.subvendor == VT1724_SUBDEVICE_AUREON51_SKY) {
-		ice->num_total_dacs = 6;
-		ice->num_total_adcs = 2;
-	} else {
-		/* aureon 7.1 and prodigy 7.1 */
-		ice->num_total_dacs = 8;
-		ice->num_total_adcs = 2;
-	}
-
-	/* to remeber the register values of CS8415 */
-	ice->akm = kzalloc(sizeof(struct snd_akm4xxx), GFP_KERNEL);
-	if (!ice->akm)
-		return -ENOMEM;
-	ice->akm_codecs = 1;
+	int err;
+	struct aureon_spec *spec = ice->spec;
 
 	err = aureon_ac97_init(ice);
 	if (err != 0)
@@ -2118,6 +2097,61 @@
 	/* initialize PCA9554 pin directions & set default input */
 	aureon_pca9554_write(ice, PCA9554_DIR, 0x00);
 	aureon_pca9554_write(ice, PCA9554_OUT, 0x00);   /* internal AUX */
+	return 0;
+}
+
+/*
+ * suspend/resume
+ */
+#ifdef CONFIG_PM
+static int aureon_resume(struct snd_ice1712 *ice)
+{
+	struct aureon_spec *spec = ice->spec;
+	int err, i;
+
+	err = aureon_reset(ice);
+	if (err != 0)
+		return err;
+
+	/* workaround for poking volume with alsamixer after resume:
+	 * just set stored volume again */
+	for (i = 0; i < ice->num_total_dacs; i++)
+		wm_set_vol(ice, i, spec->vol[i], spec->master[i % 2]);
+	return 0;
+}
+#endif
+
+/*
+ * initialize the chip
+ */
+static int __devinit aureon_init(struct snd_ice1712 *ice)
+{
+	struct aureon_spec *spec;
+	int i, err;
+
+	spec = kzalloc(sizeof(*spec), GFP_KERNEL);
+	if (!spec)
+		return -ENOMEM;
+	ice->spec = spec;
+
+	if (ice->eeprom.subvendor == VT1724_SUBDEVICE_AUREON51_SKY) {
+		ice->num_total_dacs = 6;
+		ice->num_total_adcs = 2;
+	} else {
+		/* aureon 7.1 and prodigy 7.1 */
+		ice->num_total_dacs = 8;
+		ice->num_total_adcs = 2;
+	}
+
+	/* to remeber the register values of CS8415 */
+	ice->akm = kzalloc(sizeof(struct snd_akm4xxx), GFP_KERNEL);
+	if (!ice->akm)
+		return -ENOMEM;
+	ice->akm_codecs = 1;
+
+	err = aureon_reset(ice);
+	if (err != 0)
+		return err;
 
 	spec->master[0] = WM_VOL_MUTE;
 	spec->master[1] = WM_VOL_MUTE;
@@ -2126,6 +2160,11 @@
 		wm_set_vol(ice, i, spec->vol[i], spec->master[i % 2]);
 	}
 
+#ifdef CONFIG_PM
+	ice->pm_resume = aureon_resume;
+	ice->pm_suspend_enabled = 1;
+#endif
+
 	return 0;
 }
 
diff --git a/sound/ppc/tumbler.c b/sound/ppc/tumbler.c
index 789f44f..20afdf9 100644
--- a/sound/ppc/tumbler.c
+++ b/sound/ppc/tumbler.c
@@ -30,6 +30,7 @@
 #include <linux/kmod.h>
 #include <linux/slab.h>
 #include <linux/interrupt.h>
+#include <linux/string.h>
 #include <sound/core.h>
 #include <asm/io.h>
 #include <asm/irq.h>
@@ -46,6 +47,8 @@
 #define DBG(fmt...)
 #endif
 
+#define IS_G4DA (of_machine_is_compatible("PowerMac3,4"))
+
 /* i2c address for tumbler */
 #define TAS_I2C_ADDR	0x34
 
@@ -243,6 +246,7 @@
 		snd_printk(KERN_ERR "failed to set volume \n");
 		return -EINVAL;
 	}
+	DBG("(I) succeeded to set volume (%u, %u)\n", left_vol, right_vol);
 	return 0;
 }
 
@@ -353,6 +357,7 @@
 		snd_printk(KERN_ERR "failed to set DRC\n");
 		return -EINVAL;
 	}
+	DBG("(I) succeeded to set DRC (%u, %u)\n", val[0], val[1]);
 	return 0;
 }
 
@@ -389,6 +394,7 @@
 		snd_printk(KERN_ERR "failed to set DRC\n");
 		return -EINVAL;
 	}
+	DBG("(I) succeeded to set DRC (%u, %u)\n", val[0], val[1]);
 	return 0;
 }
 
@@ -1134,7 +1140,8 @@
 		gp->inactive_val = (*base) ? 0x4 : 0x5;
 	} else {
 		const u32 *prop = NULL;
-		gp->active_state = 0;
+		gp->active_state = IS_G4DA
+				&& !strncmp(device, "keywest-gpio1", 13);
 		gp->active_val = 0x4;
 		gp->inactive_val = 0x5;
 		/* Here are some crude hacks to extract the GPIO polarity and
@@ -1312,6 +1319,9 @@
  	if (irq <= NO_IRQ)
 		irq = tumbler_find_device("line-output-detect",
 					  NULL, &mix->line_detect, 1);
+	if (IS_G4DA && irq <= NO_IRQ)
+		irq = tumbler_find_device("keywest-gpio16",
+					  NULL, &mix->line_detect, 1);
 	mix->lineout_irq = irq;
 
 	tumbler_reset_audio(chip);