Merge tag 'tegra-for-3.14-dmas-resets-rework' into drm/for-next

ARM: tegra: implement common DMA and resets DT bindings

This series converts the Tegra DTs and drivers to use the common/
standard DMA and reset bindings, rather than custom bindings. It also
adds complete documentation for the Tegra clock bindings without
actually changing any binding definitions.

This conversion relies on a few sets of patches in branches from outside
the Tegra tree:

1) A patch to add an DMA channel request API which allows deferred probe
   to be implemented.

2) A patch to implement a common part of the of_xlate function for DMA
   controllers.

3) Some ASoC patches (which in turn rely on (1) above), which support
   deferred probe during DMA channel allocation.

4) The Tegra clock driver changes for 3.14.

Consequently, this branch is based on a merge of all of those external
branches.

In turn, this branch is or will be pulled into a few places that either
rely on features introduced here, or would otherwise conflict with the
patches:

a) Tegra's own for-3.14/powergate and for-4.14/dt branches, to avoid
   conflicts.

b) The DRM tree, which introduces new code that relies on the reset
   controller framework introduced in this branch, and to avoid
   conflicts.

11 files changed, 283 insertions, 156 deletions

diff --git a/sound/soc/soc-devres.c b/sound/soc/soc-devres.c
index 3449c1e909ae..7ac745df1412 100644
--- a/sound/soc/soc-devres.c
+++ b/sound/soc/soc-devres.c
@@ -12,6 +12,7 @@
 #include <linux/module.h>
 #include <linux/moduleparam.h>
 #include <sound/soc.h>
+#include <sound/dmaengine_pcm.h>
 
 static void devm_component_release(struct device *dev, void *res)
 {
@@ -84,3 +85,43 @@ int devm_snd_soc_register_card(struct device *dev, struct snd_soc_card *card)
 	return ret;
 }
 EXPORT_SYMBOL_GPL(devm_snd_soc_register_card);
+
+#ifdef CONFIG_SND_SOC_GENERIC_DMAENGINE_PCM
+
+static void devm_dmaengine_pcm_release(struct device *dev, void *res)
+{
+	snd_dmaengine_pcm_unregister(*(struct device **)res);
+}
+
+/**
+ * devm_snd_dmaengine_pcm_register - resource managed dmaengine PCM registration
+ * @dev: The parent device for the PCM device
+ * @config: Platform specific PCM configuration
+ * @flags: Platform specific quirks
+ *
+ * Register a dmaengine based PCM device with automatic unregistration when the
+ * device is unregistered.
+ */
+int devm_snd_dmaengine_pcm_register(struct device *dev,
+	const struct snd_dmaengine_pcm_config *config, unsigned int flags)
+{
+	struct device **ptr;
+	int ret;
+
+	ptr = devres_alloc(devm_dmaengine_pcm_release, sizeof(*ptr), GFP_KERNEL);
+	if (!ptr)
+		return -ENOMEM;
+
+	ret = snd_dmaengine_pcm_register(dev, config, flags);
+	if (ret == 0) {
+		*ptr = dev;
+		devres_add(dev, ptr);
+	} else {
+		devres_free(ptr);
+	}
+
+	return ret;
+}
+EXPORT_SYMBOL_GPL(devm_snd_dmaengine_pcm_register);
+
+#endif
diff --git a/sound/soc/soc-generic-dmaengine-pcm.c b/sound/soc/soc-generic-dmaengine-pcm.c
index cbc9c96ce1f4..7483922f6ee3 100644
--- a/sound/soc/soc-generic-dmaengine-pcm.c
+++ b/sound/soc/soc-generic-dmaengine-pcm.c
@@ -137,6 +137,9 @@ static int dmaengine_pcm_set_runtime_hwparams(struct snd_pcm_substream *substrea
 	hw.buffer_bytes_max = SIZE_MAX;
 	hw.fifo_size = dma_data->fifo_size;
 
+	if (pcm->flags & SND_DMAENGINE_PCM_FLAG_NO_RESIDUE)
+		hw.info |= SNDRV_PCM_INFO_BATCH;
+
 	ret = dma_get_slave_caps(chan, &dma_caps);
 	if (ret == 0) {
 		if (dma_caps.cmd_pause)
@@ -284,24 +287,67 @@ static const char * const dmaengine_pcm_dma_channel_names[] = {
 	[SNDRV_PCM_STREAM_CAPTURE] = "rx",
 };
 
-static void dmaengine_pcm_request_chan_of(struct dmaengine_pcm *pcm,
-	struct device *dev)
+static int dmaengine_pcm_request_chan_of(struct dmaengine_pcm *pcm,
+	struct device *dev, const struct snd_dmaengine_pcm_config *config)
 {
 	unsigned int i;
+	const char *name;
+	struct dma_chan *chan;
 
 	if ((pcm->flags & (SND_DMAENGINE_PCM_FLAG_NO_DT |
 			   SND_DMAENGINE_PCM_FLAG_CUSTOM_CHANNEL_NAME)) ||
 	    !dev->of_node)
-		return;
+		return 0;
+
+	if (config->dma_dev) {
+		/*
+		 * If this warning is seen, it probably means that your Linux
+		 * device structure does not match your HW device structure.
+		 * It would be best to refactor the Linux device structure to
+		 * correctly match the HW structure.
+		 */
+		dev_warn(dev, "DMA channels sourced from device %s",
+			 dev_name(config->dma_dev));
+		dev = config->dma_dev;
+	}
 
-	if (pcm->flags & SND_DMAENGINE_PCM_FLAG_HALF_DUPLEX) {
-		pcm->chan[0] = dma_request_slave_channel(dev, "rx-tx");
-		pcm->chan[1] = pcm->chan[0];
-	} else {
-		for (i = SNDRV_PCM_STREAM_PLAYBACK; i <= SNDRV_PCM_STREAM_CAPTURE; i++) {
-			pcm->chan[i] = dma_request_slave_channel(dev,
-					dmaengine_pcm_dma_channel_names[i]);
+	for (i = SNDRV_PCM_STREAM_PLAYBACK; i <= SNDRV_PCM_STREAM_CAPTURE;
+	     i++) {
+		if (pcm->flags & SND_DMAENGINE_PCM_FLAG_HALF_DUPLEX)
+			name = "rx-tx";
+		else
+			name = dmaengine_pcm_dma_channel_names[i];
+		if (config->chan_names[i])
+			name = config->chan_names[i];
+		chan = dma_request_slave_channel_reason(dev, name);
+		if (IS_ERR(chan)) {
+			if (PTR_ERR(chan) == -EPROBE_DEFER)
+				return -EPROBE_DEFER;
+			pcm->chan[i] = NULL;
+		} else {
+			pcm->chan[i] = chan;
 		}
+		if (pcm->flags & SND_DMAENGINE_PCM_FLAG_HALF_DUPLEX)
+			break;
+	}
+
+	if (pcm->flags & SND_DMAENGINE_PCM_FLAG_HALF_DUPLEX)
+		pcm->chan[1] = pcm->chan[0];
+
+	return 0;
+}
+
+static void dmaengine_pcm_release_chan(struct dmaengine_pcm *pcm)
+{
+	unsigned int i;
+
+	for (i = SNDRV_PCM_STREAM_PLAYBACK; i <= SNDRV_PCM_STREAM_CAPTURE;
+	     i++) {
+		if (!pcm->chan[i])
+			continue;
+		dma_release_channel(pcm->chan[i]);
+		if (pcm->flags & SND_DMAENGINE_PCM_FLAG_HALF_DUPLEX)
+			break;
 	}
 }
 
@@ -315,6 +361,7 @@ int snd_dmaengine_pcm_register(struct device *dev,
 	const struct snd_dmaengine_pcm_config *config, unsigned int flags)
 {
 	struct dmaengine_pcm *pcm;
+	int ret;
 
 	pcm = kzalloc(sizeof(*pcm), GFP_KERNEL);
 	if (!pcm)
@@ -323,14 +370,25 @@ int snd_dmaengine_pcm_register(struct device *dev,
 	pcm->config = config;
 	pcm->flags = flags;
 
-	dmaengine_pcm_request_chan_of(pcm, dev);
+	ret = dmaengine_pcm_request_chan_of(pcm, dev, config);
+	if (ret)
+		goto err_free_dma;
 
 	if (flags & SND_DMAENGINE_PCM_FLAG_NO_RESIDUE)
-		return snd_soc_add_platform(dev, &pcm->platform,
+		ret = snd_soc_add_platform(dev, &pcm->platform,
 				&dmaengine_no_residue_pcm_platform);
 	else
-		return snd_soc_add_platform(dev, &pcm->platform,
+		ret = snd_soc_add_platform(dev, &pcm->platform,
 				&dmaengine_pcm_platform);
+	if (ret)
+		goto err_free_dma;
+
+	return 0;
+
+err_free_dma:
+	dmaengine_pcm_release_chan(pcm);
+	kfree(pcm);
+	return ret;
 }
 EXPORT_SYMBOL_GPL(snd_dmaengine_pcm_register);
 
@@ -345,7 +403,6 @@ void snd_dmaengine_pcm_unregister(struct device *dev)
 {
 	struct snd_soc_platform *platform;
 	struct dmaengine_pcm *pcm;
-	unsigned int i;
 
 	platform = snd_soc_lookup_platform(dev);
 	if (!platform)
@@ -353,15 +410,8 @@ void snd_dmaengine_pcm_unregister(struct device *dev)
 
 	pcm = soc_platform_to_pcm(platform);
 
-	for (i = SNDRV_PCM_STREAM_PLAYBACK; i <= SNDRV_PCM_STREAM_CAPTURE; i++) {
-		if (pcm->chan[i]) {
-			dma_release_channel(pcm->chan[i]);
-			if (pcm->flags & SND_DMAENGINE_PCM_FLAG_HALF_DUPLEX)
-				break;
-		}
-	}
-
 	snd_soc_remove_platform(platform);
+	dmaengine_pcm_release_chan(pcm);
 	kfree(pcm);
 }
 EXPORT_SYMBOL_GPL(snd_dmaengine_pcm_unregister);
diff --git a/sound/soc/tegra/Kconfig b/sound/soc/tegra/Kconfig
index 8fc653ca3ab4..896292bb853f 100644
--- a/sound/soc/tegra/Kconfig
+++ b/sound/soc/tegra/Kconfig
@@ -1,6 +1,8 @@
 config SND_SOC_TEGRA
 	tristate "SoC Audio for the Tegra System-on-Chip"
 	depends on (ARCH_TEGRA && TEGRA20_APB_DMA) || COMPILE_TEST
+	depends on COMMON_CLK
+	depends on RESET_CONTROLLER
 	select REGMAP_MMIO
 	select SND_SOC_GENERIC_DMAENGINE_PCM
 	help
diff --git a/sound/soc/tegra/tegra20_ac97.c b/sound/soc/tegra/tegra20_ac97.c
index ae27bcd586d2..d8b98d70ff41 100644
--- a/sound/soc/tegra/tegra20_ac97.c
+++ b/sound/soc/tegra/tegra20_ac97.c
@@ -313,7 +313,6 @@ static int tegra20_ac97_platform_probe(struct platform_device *pdev)
 {
 	struct tegra20_ac97 *ac97;
 	struct resource *mem;
-	u32 of_dma[2];
 	void __iomem *regs;
 	int ret = 0;
 
@@ -348,14 +347,6 @@ static int tegra20_ac97_platform_probe(struct platform_device *pdev)
 		goto err_clk_put;
 	}
 
-	if (of_property_read_u32_array(pdev->dev.of_node,
-				       "nvidia,dma-request-selector",
-				       of_dma, 2) < 0) {
-		dev_err(&pdev->dev, "No DMA resource\n");
-		ret = -ENODEV;
-		goto err_clk_put;
-	}
-
 	ac97->reset_gpio = of_get_named_gpio(pdev->dev.of_node,
 					     "nvidia,codec-reset-gpio", 0);
 	if (gpio_is_valid(ac97->reset_gpio)) {
@@ -380,12 +371,10 @@ static int tegra20_ac97_platform_probe(struct platform_device *pdev)
 	ac97->capture_dma_data.addr = mem->start + TEGRA20_AC97_FIFO_RX1;
 	ac97->capture_dma_data.addr_width = DMA_SLAVE_BUSWIDTH_4_BYTES;
 	ac97->capture_dma_data.maxburst = 4;
-	ac97->capture_dma_data.slave_id = of_dma[1];
 
 	ac97->playback_dma_data.addr = mem->start + TEGRA20_AC97_FIFO_TX1;
 	ac97->playback_dma_data.addr_width = DMA_SLAVE_BUSWIDTH_4_BYTES;
 	ac97->playback_dma_data.maxburst = 4;
-	ac97->playback_dma_data.slave_id = of_dma[1];
 
 	ret = tegra_asoc_utils_init(&ac97->util_data, &pdev->dev);
 	if (ret)
diff --git a/sound/soc/tegra/tegra20_i2s.c b/sound/soc/tegra/tegra20_i2s.c
index 364bf6a907e1..1dc869c475e7 100644
--- a/sound/soc/tegra/tegra20_i2s.c
+++ b/sound/soc/tegra/tegra20_i2s.c
@@ -339,9 +339,7 @@ static const struct regmap_config tegra20_i2s_regmap_config = {
 static int tegra20_i2s_platform_probe(struct platform_device *pdev)
 {
 	struct tegra20_i2s *i2s;
-	struct resource *mem, *memregion, *dmareq;
-	u32 of_dma[2];
-	u32 dma_ch;
+	struct resource *mem, *memregion;
 	void __iomem *regs;
 	int ret;
 
@@ -370,20 +368,6 @@ static int tegra20_i2s_platform_probe(struct platform_device *pdev)
 		goto err_clk_put;
 	}
 
-	dmareq = platform_get_resource(pdev, IORESOURCE_DMA, 0);
-	if (!dmareq) {
-		if (of_property_read_u32_array(pdev->dev.of_node,
-					"nvidia,dma-request-selector",
-					of_dma, 2) < 0) {
-			dev_err(&pdev->dev, "No DMA resource\n");
-			ret = -ENODEV;
-			goto err_clk_put;
-		}
-		dma_ch = of_dma[1];
-	} else {
-		dma_ch = dmareq->start;
-	}
-
 	memregion = devm_request_mem_region(&pdev->dev, mem->start,
 					    resource_size(mem), DRV_NAME);
 	if (!memregion) {
@@ -410,12 +394,10 @@ static int tegra20_i2s_platform_probe(struct platform_device *pdev)
 	i2s->capture_dma_data.addr = mem->start + TEGRA20_I2S_FIFO2;
 	i2s->capture_dma_data.addr_width = DMA_SLAVE_BUSWIDTH_4_BYTES;
 	i2s->capture_dma_data.maxburst = 4;
-	i2s->capture_dma_data.slave_id = dma_ch;
 
 	i2s->playback_dma_data.addr = mem->start + TEGRA20_I2S_FIFO1;
 	i2s->playback_dma_data.addr_width = DMA_SLAVE_BUSWIDTH_4_BYTES;
 	i2s->playback_dma_data.maxburst = 4;
-	i2s->playback_dma_data.slave_id = dma_ch;
 
 	pm_runtime_enable(&pdev->dev);
 	if (!pm_runtime_enabled(&pdev->dev)) {
diff --git a/sound/soc/tegra/tegra30_ahub.c b/sound/soc/tegra/tegra30_ahub.c
index 31154338c1eb..d6f4c9940e0c 100644
--- a/sound/soc/tegra/tegra30_ahub.c
+++ b/sound/soc/tegra/tegra30_ahub.c
@@ -24,8 +24,8 @@
 #include <linux/platform_device.h>
 #include <linux/pm_runtime.h>
 #include <linux/regmap.h>
+#include <linux/reset.h>
 #include <linux/slab.h>
-#include <linux/clk/tegra.h>
 #include <sound/soc.h>
 #include "tegra30_ahub.h"
 
@@ -95,8 +95,8 @@ static int tegra30_ahub_runtime_resume(struct device *dev)
 }
 
 int tegra30_ahub_allocate_rx_fifo(enum tegra30_ahub_rxcif *rxcif,
-				  dma_addr_t *fiforeg,
-				  unsigned int *reqsel)
+				  char *dmachan, int dmachan_len,
+				  dma_addr_t *fiforeg)
 {
 	int channel;
 	u32 reg, val;
@@ -110,9 +110,11 @@ int tegra30_ahub_allocate_rx_fifo(enum tegra30_ahub_rxcif *rxcif,
 	__set_bit(channel, ahub->rx_usage);
 
 	*rxcif = TEGRA30_AHUB_RXCIF_APBIF_RX0 + channel;
+	snprintf(dmachan, dmachan_len, "rx%d", channel);
 	*fiforeg = ahub->apbif_addr + TEGRA30_AHUB_CHANNEL_RXFIFO +
 		   (channel * TEGRA30_AHUB_CHANNEL_RXFIFO_STRIDE);
-	*reqsel = ahub->dma_sel + channel;
+
+	pm_runtime_get_sync(ahub->dev);
 
 	reg = TEGRA30_AHUB_CHANNEL_CTRL +
 	      (channel * TEGRA30_AHUB_CHANNEL_CTRL_STRIDE);
@@ -140,6 +142,8 @@ int tegra30_ahub_allocate_rx_fifo(enum tegra30_ahub_rxcif *rxcif,
 	      (channel * TEGRA30_AHUB_CIF_RX_CTRL_STRIDE);
 	ahub->soc_data->set_audio_cif(ahub->regmap_apbif, reg, &cif_conf);
 
+	pm_runtime_put(ahub->dev);
+
 	return 0;
 }
 EXPORT_SYMBOL_GPL(tegra30_ahub_allocate_rx_fifo);
@@ -149,12 +153,16 @@ int tegra30_ahub_enable_rx_fifo(enum tegra30_ahub_rxcif rxcif)
 	int channel = rxcif - TEGRA30_AHUB_RXCIF_APBIF_RX0;
 	int reg, val;
 
+	pm_runtime_get_sync(ahub->dev);
+
 	reg = TEGRA30_AHUB_CHANNEL_CTRL +
 	      (channel * TEGRA30_AHUB_CHANNEL_CTRL_STRIDE);
 	val = tegra30_apbif_read(reg);
 	val |= TEGRA30_AHUB_CHANNEL_CTRL_RX_EN;
 	tegra30_apbif_write(reg, val);
 
+	pm_runtime_put(ahub->dev);
+
 	return 0;
 }
 EXPORT_SYMBOL_GPL(tegra30_ahub_enable_rx_fifo);
@@ -164,12 +172,16 @@ int tegra30_ahub_disable_rx_fifo(enum tegra30_ahub_rxcif rxcif)
 	int channel = rxcif - TEGRA30_AHUB_RXCIF_APBIF_RX0;
 	int reg, val;
 
+	pm_runtime_get_sync(ahub->dev);
+
 	reg = TEGRA30_AHUB_CHANNEL_CTRL +
 	      (channel * TEGRA30_AHUB_CHANNEL_CTRL_STRIDE);
 	val = tegra30_apbif_read(reg);
 	val &= ~TEGRA30_AHUB_CHANNEL_CTRL_RX_EN;
 	tegra30_apbif_write(reg, val);
 
+	pm_runtime_put(ahub->dev);
+
 	return 0;
 }
 EXPORT_SYMBOL_GPL(tegra30_ahub_disable_rx_fifo);
@@ -185,8 +197,8 @@ int tegra30_ahub_free_rx_fifo(enum tegra30_ahub_rxcif rxcif)
 EXPORT_SYMBOL_GPL(tegra30_ahub_free_rx_fifo);
 
 int tegra30_ahub_allocate_tx_fifo(enum tegra30_ahub_txcif *txcif,
-				  dma_addr_t *fiforeg,
-				  unsigned int *reqsel)
+				  char *dmachan, int dmachan_len,
+				  dma_addr_t *fiforeg)
 {
 	int channel;
 	u32 reg, val;
@@ -200,9 +212,11 @@ int tegra30_ahub_allocate_tx_fifo(enum tegra30_ahub_txcif *txcif,
 	__set_bit(channel, ahub->tx_usage);
 
 	*txcif = TEGRA30_AHUB_TXCIF_APBIF_TX0 + channel;
+	snprintf(dmachan, dmachan_len, "tx%d", channel);
 	*fiforeg = ahub->apbif_addr + TEGRA30_AHUB_CHANNEL_TXFIFO +
 		   (channel * TEGRA30_AHUB_CHANNEL_TXFIFO_STRIDE);
-	*reqsel = ahub->dma_sel + channel;
+
+	pm_runtime_get_sync(ahub->dev);
 
 	reg = TEGRA30_AHUB_CHANNEL_CTRL +
 	      (channel * TEGRA30_AHUB_CHANNEL_CTRL_STRIDE);
@@ -230,6 +244,8 @@ int tegra30_ahub_allocate_tx_fifo(enum tegra30_ahub_txcif *txcif,
 	      (channel * TEGRA30_AHUB_CIF_TX_CTRL_STRIDE);
 	ahub->soc_data->set_audio_cif(ahub->regmap_apbif, reg, &cif_conf);
 
+	pm_runtime_put(ahub->dev);
+
 	return 0;
 }
 EXPORT_SYMBOL_GPL(tegra30_ahub_allocate_tx_fifo);
@@ -239,12 +255,16 @@ int tegra30_ahub_enable_tx_fifo(enum tegra30_ahub_txcif txcif)
 	int channel = txcif - TEGRA30_AHUB_TXCIF_APBIF_TX0;
 	int reg, val;
 
+	pm_runtime_get_sync(ahub->dev);
+
 	reg = TEGRA30_AHUB_CHANNEL_CTRL +
 	      (channel * TEGRA30_AHUB_CHANNEL_CTRL_STRIDE);
 	val = tegra30_apbif_read(reg);
 	val |= TEGRA30_AHUB_CHANNEL_CTRL_TX_EN;
 	tegra30_apbif_write(reg, val);
 
+	pm_runtime_put(ahub->dev);
+
 	return 0;
 }
 EXPORT_SYMBOL_GPL(tegra30_ahub_enable_tx_fifo);
@@ -254,12 +274,16 @@ int tegra30_ahub_disable_tx_fifo(enum tegra30_ahub_txcif txcif)
 	int channel = txcif - TEGRA30_AHUB_TXCIF_APBIF_TX0;
 	int reg, val;
 
+	pm_runtime_get_sync(ahub->dev);
+
 	reg = TEGRA30_AHUB_CHANNEL_CTRL +
 	      (channel * TEGRA30_AHUB_CHANNEL_CTRL_STRIDE);
 	val = tegra30_apbif_read(reg);
 	val &= ~TEGRA30_AHUB_CHANNEL_CTRL_TX_EN;
 	tegra30_apbif_write(reg, val);
 
+	pm_runtime_put(ahub->dev);
+
 	return 0;
 }
 EXPORT_SYMBOL_GPL(tegra30_ahub_disable_tx_fifo);
@@ -280,10 +304,14 @@ int tegra30_ahub_set_rx_cif_source(enum tegra30_ahub_rxcif rxcif,
 	int channel = rxcif - TEGRA30_AHUB_RXCIF_APBIF_RX0;
 	int reg;
 
+	pm_runtime_get_sync(ahub->dev);
+
 	reg = TEGRA30_AHUB_AUDIO_RX +
 	      (channel * TEGRA30_AHUB_AUDIO_RX_STRIDE);
 	tegra30_audio_write(reg, 1 << txcif);
 
+	pm_runtime_put(ahub->dev);
+
 	return 0;
 }
 EXPORT_SYMBOL_GPL(tegra30_ahub_set_rx_cif_source);
@@ -293,35 +321,51 @@ int tegra30_ahub_unset_rx_cif_source(enum tegra30_ahub_rxcif rxcif)
 	int channel = rxcif - TEGRA30_AHUB_RXCIF_APBIF_RX0;
 	int reg;
 
+	pm_runtime_get_sync(ahub->dev);
+
 	reg = TEGRA30_AHUB_AUDIO_RX +
 	      (channel * TEGRA30_AHUB_AUDIO_RX_STRIDE);
 	tegra30_audio_write(reg, 0);
 
+	pm_runtime_put(ahub->dev);
+
 	return 0;
 }
 EXPORT_SYMBOL_GPL(tegra30_ahub_unset_rx_cif_source);
 
-#define CLK_LIST_MASK_TEGRA30	BIT(0)
-#define CLK_LIST_MASK_TEGRA114	BIT(1)
+#define MOD_LIST_MASK_TEGRA30	BIT(0)
+#define MOD_LIST_MASK_TEGRA114	BIT(1)
+#define MOD_LIST_MASK_TEGRA124	BIT(2)
 
-#define CLK_LIST_MASK_TEGRA30_OR_LATER \
-		(CLK_LIST_MASK_TEGRA30 | CLK_LIST_MASK_TEGRA114)
+#define MOD_LIST_MASK_TEGRA30_OR_LATER \
+		(MOD_LIST_MASK_TEGRA30 | MOD_LIST_MASK_TEGRA114 | \
+			MOD_LIST_MASK_TEGRA124)
+#define MOD_LIST_MASK_TEGRA114_OR_LATER \
+		(MOD_LIST_MASK_TEGRA114 | MOD_LIST_MASK_TEGRA124)
 
 static const struct {
-	const char *clk_name;
-	u32 clk_list_mask;
-} configlink_clocks[] = {
-	{ "i2s0", CLK_LIST_MASK_TEGRA30_OR_LATER },
-	{ "i2s1", CLK_LIST_MASK_TEGRA30_OR_LATER },
-	{ "i2s2", CLK_LIST_MASK_TEGRA30_OR_LATER },
-	{ "i2s3", CLK_LIST_MASK_TEGRA30_OR_LATER },
-	{ "i2s4", CLK_LIST_MASK_TEGRA30_OR_LATER },
-	{ "dam0", CLK_LIST_MASK_TEGRA30_OR_LATER },
-	{ "dam1", CLK_LIST_MASK_TEGRA30_OR_LATER },
-	{ "dam2", CLK_LIST_MASK_TEGRA30_OR_LATER },
-	{ "spdif_in", CLK_LIST_MASK_TEGRA30_OR_LATER },
-	{ "amx", CLK_LIST_MASK_TEGRA114 },
-	{ "adx", CLK_LIST_MASK_TEGRA114 },
+	const char *rst_name;
+	u32 mod_list_mask;
+} configlink_mods[] = {
+	{ "i2s0", MOD_LIST_MASK_TEGRA30_OR_LATER },
+	{ "i2s1", MOD_LIST_MASK_TEGRA30_OR_LATER },
+	{ "i2s2", MOD_LIST_MASK_TEGRA30_OR_LATER },
+	{ "i2s3", MOD_LIST_MASK_TEGRA30_OR_LATER },
+	{ "i2s4", MOD_LIST_MASK_TEGRA30_OR_LATER },
+	{ "dam0", MOD_LIST_MASK_TEGRA30_OR_LATER },
+	{ "dam1", MOD_LIST_MASK_TEGRA30_OR_LATER },
+	{ "dam2", MOD_LIST_MASK_TEGRA30_OR_LATER },
+	{ "spdif", MOD_LIST_MASK_TEGRA30_OR_LATER },
+	{ "amx", MOD_LIST_MASK_TEGRA114_OR_LATER },
+	{ "adx", MOD_LIST_MASK_TEGRA114_OR_LATER },
+	{ "amx1", MOD_LIST_MASK_TEGRA124 },
+	{ "adx1", MOD_LIST_MASK_TEGRA124 },
+	{ "afc0", MOD_LIST_MASK_TEGRA124 },
+	{ "afc1", MOD_LIST_MASK_TEGRA124 },
+	{ "afc2", MOD_LIST_MASK_TEGRA124 },
+	{ "afc3", MOD_LIST_MASK_TEGRA124 },
+	{ "afc4", MOD_LIST_MASK_TEGRA124 },
+	{ "afc5", MOD_LIST_MASK_TEGRA124 },
 };
 
 #define LAST_REG(name) \
@@ -450,17 +494,17 @@ static const struct regmap_config tegra30_ahub_ahub_regmap_config = {
 };
 
 static struct tegra30_ahub_soc_data soc_data_tegra30 = {
-	.clk_list_mask = CLK_LIST_MASK_TEGRA30,
+	.mod_list_mask = MOD_LIST_MASK_TEGRA30,
 	.set_audio_cif = tegra30_ahub_set_cif,
 };
 
 static struct tegra30_ahub_soc_data soc_data_tegra114 = {
-	.clk_list_mask = CLK_LIST_MASK_TEGRA114,
+	.mod_list_mask = MOD_LIST_MASK_TEGRA114,
 	.set_audio_cif = tegra30_ahub_set_cif,
 };
 
 static struct tegra30_ahub_soc_data soc_data_tegra124 = {
-	.clk_list_mask = CLK_LIST_MASK_TEGRA114,
+	.mod_list_mask = MOD_LIST_MASK_TEGRA124,
 	.set_audio_cif = tegra124_ahub_set_cif,
 };
 
@@ -475,10 +519,9 @@ static int tegra30_ahub_probe(struct platform_device *pdev)
 {
 	const struct of_device_id *match;
 	const struct tegra30_ahub_soc_data *soc_data;
-	struct clk *clk;
+	struct reset_control *rst;
 	int i;
 	struct resource *res0, *res1, *region;
-	u32 of_dma[2];
 	void __iomem *regs_apbif, *regs_ahub;
 	int ret = 0;
 
@@ -495,19 +538,24 @@ static int tegra30_ahub_probe(struct platform_device *pdev)
 	 * operate correctly, all devices on this bus must be out of reset.
 	 * Ensure that here.
 	 */
-	for (i = 0; i < ARRAY_SIZE(configlink_clocks); i++) {
-		if (!(configlink_clocks[i].clk_list_mask &
-					soc_data->clk_list_mask))
+	for (i = 0; i < ARRAY_SIZE(configlink_mods); i++) {
+		if (!(configlink_mods[i].mod_list_mask &
+					soc_data->mod_list_mask))
 			continue;
-		clk = clk_get(&pdev->dev, configlink_clocks[i].clk_name);
-		if (IS_ERR(clk)) {
-			dev_err(&pdev->dev, "Can't get clock %s\n",
-				configlink_clocks[i].clk_name);
-			ret = PTR_ERR(clk);
+
+		rst = reset_control_get(&pdev->dev,
+					configlink_mods[i].rst_name);
+		if (IS_ERR(rst)) {
+			dev_err(&pdev->dev, "Can't get reset %s\n",
+				configlink_mods[i].rst_name);
+			ret = PTR_ERR(rst);
 			goto err;
 		}
-		tegra_periph_reset_deassert(clk);
-		clk_put(clk);
+
+		ret = reset_control_deassert(rst);
+		reset_control_put(rst);
+		if (ret)
+			goto err;
 	}
 
 	ahub = devm_kzalloc(&pdev->dev, sizeof(struct tegra30_ahub),
@@ -536,16 +584,6 @@ static int tegra30_ahub_probe(struct platform_device *pdev)
 		goto err_clk_put_d_audio;
 	}
 
-	if (of_property_read_u32_array(pdev->dev.of_node,
-				"nvidia,dma-request-selector",
-				of_dma, 2) < 0) {
-		dev_err(&pdev->dev,
-			"Missing property nvidia,dma-request-selector\n");
-		ret = -ENODEV;
-		goto err_clk_put_d_audio;
-	}
-	ahub->dma_sel = of_dma[1];
-
 	res0 = platform_get_resource(pdev, IORESOURCE_MEM, 0);
 	if (!res0) {
 		dev_err(&pdev->dev, "No apbif memory resource\n");
diff --git a/sound/soc/tegra/tegra30_ahub.h b/sound/soc/tegra/tegra30_ahub.h
index d67321d90faa..fd7ba75ed814 100644
--- a/sound/soc/tegra/tegra30_ahub.h
+++ b/sound/soc/tegra/tegra30_ahub.h
@@ -465,15 +465,15 @@ enum tegra30_ahub_rxcif {
 };
 
 extern int tegra30_ahub_allocate_rx_fifo(enum tegra30_ahub_rxcif *rxcif,
-					 dma_addr_t *fiforeg,
-					 unsigned int *reqsel);
+					 char *dmachan, int dmachan_len,
+					 dma_addr_t *fiforeg);
 extern int tegra30_ahub_enable_rx_fifo(enum tegra30_ahub_rxcif rxcif);
 extern int tegra30_ahub_disable_rx_fifo(enum tegra30_ahub_rxcif rxcif);
 extern int tegra30_ahub_free_rx_fifo(enum tegra30_ahub_rxcif rxcif);
 
 extern int tegra30_ahub_allocate_tx_fifo(enum tegra30_ahub_txcif *txcif,
-					 dma_addr_t *fiforeg,
-					 unsigned int *reqsel);
+					 char *dmachan, int dmachan_len,
+					 dma_addr_t *fiforeg);
 extern int tegra30_ahub_enable_tx_fifo(enum tegra30_ahub_txcif txcif);
 extern int tegra30_ahub_disable_tx_fifo(enum tegra30_ahub_txcif txcif);
 extern int tegra30_ahub_free_tx_fifo(enum tegra30_ahub_txcif txcif);
@@ -502,7 +502,7 @@ void tegra124_ahub_set_cif(struct regmap *regmap, unsigned int reg,
 			   struct tegra30_ahub_cif_conf *conf);
 
 struct tegra30_ahub_soc_data {
-	u32 clk_list_mask;
+	u32 mod_list_mask;
 	void (*set_audio_cif)(struct regmap *regmap,
 			      unsigned int reg,
 			      struct tegra30_ahub_cif_conf *conf);
@@ -524,7 +524,6 @@ struct tegra30_ahub {
 	struct device *dev;
 	struct clk *clk_d_audio;
 	struct clk *clk_apbif;
-	int dma_sel;
 	resource_size_t apbif_addr;
 	struct regmap *regmap_apbif;
 	struct regmap *regmap_ahub;
diff --git a/sound/soc/tegra/tegra30_i2s.c b/sound/soc/tegra/tegra30_i2s.c
index 231a785b3921..362e8f728ddf 100644
--- a/sound/soc/tegra/tegra30_i2s.c
+++ b/sound/soc/tegra/tegra30_i2s.c
@@ -73,47 +73,6 @@ static int tegra30_i2s_runtime_resume(struct device *dev)
 	return 0;
 }
 
-static int tegra30_i2s_startup(struct snd_pcm_substream *substream,
-			struct snd_soc_dai *dai)
-{
-	struct tegra30_i2s *i2s = snd_soc_dai_get_drvdata(dai);
-	int ret;
-
-	if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
-		ret = tegra30_ahub_allocate_tx_fifo(&i2s->playback_fifo_cif,
-					&i2s->playback_dma_data.addr,
-					&i2s->playback_dma_data.slave_id);
-		i2s->playback_dma_data.addr_width = DMA_SLAVE_BUSWIDTH_4_BYTES;
-		i2s->playback_dma_data.maxburst = 4;
-		tegra30_ahub_set_rx_cif_source(i2s->playback_i2s_cif,
-					       i2s->playback_fifo_cif);
-	} else {
-		ret = tegra30_ahub_allocate_rx_fifo(&i2s->capture_fifo_cif,
-					&i2s->capture_dma_data.addr,
-					&i2s->capture_dma_data.slave_id);
-		i2s->capture_dma_data.addr_width = DMA_SLAVE_BUSWIDTH_4_BYTES;
-		i2s->capture_dma_data.maxburst = 4;
-		tegra30_ahub_set_rx_cif_source(i2s->capture_fifo_cif,
-					       i2s->capture_i2s_cif);
-	}
-
-	return ret;
-}
-
-static void tegra30_i2s_shutdown(struct snd_pcm_substream *substream,
-			struct snd_soc_dai *dai)
-{
-	struct tegra30_i2s *i2s = snd_soc_dai_get_drvdata(dai);
-
-	if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
-		tegra30_ahub_unset_rx_cif_source(i2s->playback_i2s_cif);
-		tegra30_ahub_free_tx_fifo(i2s->playback_fifo_cif);
-	} else {
-		tegra30_ahub_unset_rx_cif_source(i2s->capture_fifo_cif);
-		tegra30_ahub_free_rx_fifo(i2s->capture_fifo_cif);
-	}
-}
-
 static int tegra30_i2s_set_fmt(struct snd_soc_dai *dai,
 				unsigned int fmt)
 {
@@ -317,8 +276,6 @@ static int tegra30_i2s_probe(struct snd_soc_dai *dai)
 }
 
 static struct snd_soc_dai_ops tegra30_i2s_dai_ops = {
-	.startup	= tegra30_i2s_startup,
-	.shutdown	= tegra30_i2s_shutdown,
 	.set_fmt	= tegra30_i2s_set_fmt,
 	.hw_params	= tegra30_i2s_hw_params,
 	.trigger	= tegra30_i2s_trigger,
@@ -499,15 +456,51 @@ static int tegra30_i2s_platform_probe(struct platform_device *pdev)
 			goto err_pm_disable;
 	}
 
+	i2s->playback_dma_data.addr_width = DMA_SLAVE_BUSWIDTH_4_BYTES;
+	i2s->playback_dma_data.maxburst = 4;
+	ret = tegra30_ahub_allocate_tx_fifo(&i2s->playback_fifo_cif,
+					    i2s->playback_dma_chan,
+					    sizeof(i2s->playback_dma_chan),
+					    &i2s->playback_dma_data.addr);
+	if (ret) {
+		dev_err(&pdev->dev, "Could not alloc TX FIFO: %d\n", ret);
+		goto err_suspend;
+	}
+	ret = tegra30_ahub_set_rx_cif_source(i2s->playback_i2s_cif,
+					     i2s->playback_fifo_cif);
+	if (ret) {
+		dev_err(&pdev->dev, "Could not route TX FIFO: %d\n", ret);
+		goto err_free_tx_fifo;
+	}
+
+	i2s->capture_dma_data.addr_width = DMA_SLAVE_BUSWIDTH_4_BYTES;
+	i2s->capture_dma_data.maxburst = 4;
+	ret = tegra30_ahub_allocate_rx_fifo(&i2s->capture_fifo_cif,
+					    i2s->capture_dma_chan,
+					    sizeof(i2s->capture_dma_chan),
+					    &i2s->capture_dma_data.addr);
+	if (ret) {
+		dev_err(&pdev->dev, "Could not alloc RX FIFO: %d\n", ret);
+		goto err_unroute_tx_fifo;
+	}
+	ret = tegra30_ahub_set_rx_cif_source(i2s->capture_fifo_cif,
+					     i2s->capture_i2s_cif);
+	if (ret) {
+		dev_err(&pdev->dev, "Could not route TX FIFO: %d\n", ret);
+		goto err_free_rx_fifo;
+	}
+
 	ret = snd_soc_register_component(&pdev->dev, &tegra30_i2s_component,
 				   &i2s->dai, 1);
 	if (ret) {
 		dev_err(&pdev->dev, "Could not register DAI: %d\n", ret);
 		ret = -ENOMEM;
-		goto err_suspend;
+		goto err_unroute_rx_fifo;
 	}
 
-	ret = tegra_pcm_platform_register(&pdev->dev);
+	ret = tegra_pcm_platform_register_with_chan_names(&pdev->dev,
+				&i2s->dma_config, i2s->playback_dma_chan,
+				i2s->capture_dma_chan);
 	if (ret) {
 		dev_err(&pdev->dev, "Could not register PCM: %d\n", ret);
 		goto err_unregister_component;
@@ -517,6 +510,14 @@ static int tegra30_i2s_platform_probe(struct platform_device *pdev)
 
 err_unregister_component:
 	snd_soc_unregister_component(&pdev->dev);
+err_unroute_rx_fifo:
+	tegra30_ahub_unset_rx_cif_source(i2s->capture_fifo_cif);
+err_free_rx_fifo:
+	tegra30_ahub_free_rx_fifo(i2s->capture_fifo_cif);
+err_unroute_tx_fifo:
+	tegra30_ahub_unset_rx_cif_source(i2s->playback_i2s_cif);
+err_free_tx_fifo:
+	tegra30_ahub_free_tx_fifo(i2s->playback_fifo_cif);
 err_suspend:
 	if (!pm_runtime_status_suspended(&pdev->dev))
 		tegra30_i2s_runtime_suspend(&pdev->dev);
@@ -539,6 +540,12 @@ static int tegra30_i2s_platform_remove(struct platform_device *pdev)
 	tegra_pcm_platform_unregister(&pdev->dev);
 	snd_soc_unregister_component(&pdev->dev);
 
+	tegra30_ahub_unset_rx_cif_source(i2s->capture_fifo_cif);
+	tegra30_ahub_free_rx_fifo(i2s->capture_fifo_cif);
+
+	tegra30_ahub_unset_rx_cif_source(i2s->playback_i2s_cif);
+	tegra30_ahub_free_tx_fifo(i2s->playback_fifo_cif);
+
 	clk_put(i2s->clk_i2s);
 
 	return 0;
diff --git a/sound/soc/tegra/tegra30_i2s.h b/sound/soc/tegra/tegra30_i2s.h
index 4d0b0a30dbfb..774fc6ad2026 100644
--- a/sound/soc/tegra/tegra30_i2s.h
+++ b/sound/soc/tegra/tegra30_i2s.h
@@ -238,11 +238,14 @@ struct tegra30_i2s {
 	struct clk *clk_i2s;
 	enum tegra30_ahub_txcif capture_i2s_cif;
 	enum tegra30_ahub_rxcif capture_fifo_cif;
+	char capture_dma_chan[8];
 	struct snd_dmaengine_dai_dma_data capture_dma_data;
 	enum tegra30_ahub_rxcif playback_i2s_cif;
 	enum tegra30_ahub_txcif playback_fifo_cif;
+	char playback_dma_chan[8];
 	struct snd_dmaengine_dai_dma_data playback_dma_data;
 	struct regmap *regmap;
+	struct snd_dmaengine_pcm_config dma_config;
 };
 
 #endif
diff --git a/sound/soc/tegra/tegra_pcm.c b/sound/soc/tegra/tegra_pcm.c
index 7b2d23ba69b3..7ce5c334a660 100644
--- a/sound/soc/tegra/tegra_pcm.c
+++ b/sound/soc/tegra/tegra_pcm.c
@@ -61,12 +61,23 @@ static const struct snd_dmaengine_pcm_config tegra_dmaengine_pcm_config = {
 
 int tegra_pcm_platform_register(struct device *dev)
 {
-	return snd_dmaengine_pcm_register(dev, &tegra_dmaengine_pcm_config,
-			SND_DMAENGINE_PCM_FLAG_NO_DT |
-			SND_DMAENGINE_PCM_FLAG_COMPAT);
+	return snd_dmaengine_pcm_register(dev, &tegra_dmaengine_pcm_config, 0);
 }
 EXPORT_SYMBOL_GPL(tegra_pcm_platform_register);
 
+int tegra_pcm_platform_register_with_chan_names(struct device *dev,
+				struct snd_dmaengine_pcm_config *config,
+				char *txdmachan, char *rxdmachan)
+{
+	*config = tegra_dmaengine_pcm_config;
+	config->dma_dev = dev->parent;
+	config->chan_names[0] = txdmachan;
+	config->chan_names[1] = rxdmachan;
+
+	return snd_dmaengine_pcm_register(dev, config, 0);
+}
+EXPORT_SYMBOL_GPL(tegra_pcm_platform_register_with_chan_names);
+
 void tegra_pcm_platform_unregister(struct device *dev)
 {
 	return snd_dmaengine_pcm_unregister(dev);
diff --git a/sound/soc/tegra/tegra_pcm.h b/sound/soc/tegra/tegra_pcm.h
index 68ad901714a9..7883dec748a3 100644
--- a/sound/soc/tegra/tegra_pcm.h
+++ b/sound/soc/tegra/tegra_pcm.h
@@ -31,7 +31,12 @@
 #ifndef __TEGRA_PCM_H__
 #define __TEGRA_PCM_H__
 
+struct snd_dmaengine_pcm_config;
+
 int tegra_pcm_platform_register(struct device *dev);
+int tegra_pcm_platform_register_with_chan_names(struct device *dev,
+				struct snd_dmaengine_pcm_config *config,
+				char *txdmachan, char *rxdmachan);
 void tegra_pcm_platform_unregister(struct device *dev);
 
 #endif