diff --git a/sound/pci/hda/hda_codec.c b/sound/pci/hda/hda_codec.c
index 7e3dcaba6365c109a3941a0ed8b12ff28b4766cf..ddebe7541390ac8b2c306f8f553cda3edc4e127e 100644
--- a/sound/pci/hda/hda_codec.c
+++ b/sound/pci/hda/hda_codec.c
@@ -516,6 +516,7 @@ static int snd_hda_bus_dev_disconnect(struct snd_device *device)
  */
 int snd_hda_bus_new(struct snd_card *card,
 		    const struct hdac_bus_ops *ops,
+		    const struct hdac_io_ops *io_ops,
 		    struct hda_bus **busp)
 {
 	struct hda_bus *bus;
@@ -532,7 +533,7 @@ int snd_hda_bus_new(struct snd_card *card,
 	if (!bus)
 		return -ENOMEM;
 
-	err = snd_hdac_bus_init(&bus->core, card->dev, ops, NULL);
+	err = snd_hdac_bus_init(&bus->core, card->dev, ops, io_ops);
 	if (err < 0) {
 		kfree(bus);
 		return err;
diff --git a/sound/pci/hda/hda_codec.h b/sound/pci/hda/hda_codec.h
index b4261721d8f1e2cb57b6357af13671a0d59a0c7f..c8031360de9002a0f038f7aea1bce125ac56de99 100644
--- a/sound/pci/hda/hda_codec.h
+++ b/sound/pci/hda/hda_codec.h
@@ -328,6 +328,7 @@ struct hda_codec {
  */
 int snd_hda_bus_new(struct snd_card *card,
 		    const struct hdac_bus_ops *ops,
+		    const struct hdac_io_ops *io_ops,
 		    struct hda_bus **busp);
 int snd_hda_codec_new(struct hda_bus *bus, struct snd_card *card,
 		      unsigned int codec_addr, struct hda_codec **codecp);
diff --git a/sound/pci/hda/hda_controller.c b/sound/pci/hda/hda_controller.c
index 666dee232e95b200173c19c971067973d2a4a54a..aadce642aabc01f2c7e0c8c57dca3338f2a7fad4 100644
--- a/sound/pci/hda/hda_controller.c
+++ b/sound/pci/hda/hda_controller.c
@@ -985,8 +985,8 @@ static int azx_attach_pcm_stream(struct hda_bus *bus, struct hda_codec *codec,
 static int azx_alloc_cmd_io(struct azx *chip)
 {
 	/* single page (at least 4096 bytes) must suffice for both ringbuffes */
-	return chip->ops->dma_alloc_pages(chip, SNDRV_DMA_TYPE_DEV,
-					  PAGE_SIZE, &chip->rb);
+	return chip->io_ops->dma_alloc_pages(azx_bus(chip), SNDRV_DMA_TYPE_DEV,
+					     PAGE_SIZE, &chip->rb);
 }
 
 static void azx_init_cmd_io(struct azx *chip)
@@ -1396,8 +1396,8 @@ static int azx_load_dsp_prepare(struct hda_bus *bus, unsigned int format,
 	azx_dev->locked = 1;
 	spin_unlock_irq(&chip->reg_lock);
 
-	err = chip->ops->dma_alloc_pages(chip, SNDRV_DMA_TYPE_DEV_SG,
-					 byte_size, bufp);
+	err = chip->io_ops->dma_alloc_pages(&bus->core, SNDRV_DMA_TYPE_DEV_SG,
+					    byte_size, bufp);
 	if (err < 0)
 		goto err_alloc;
 
@@ -1422,7 +1422,7 @@ static int azx_load_dsp_prepare(struct hda_bus *bus, unsigned int format,
 	return azx_dev->stream_tag;
 
  error:
-	chip->ops->dma_free_pages(chip, bufp);
+	chip->io_ops->dma_free_pages(&bus->core, bufp);
  err_alloc:
 	spin_lock_irq(&chip->reg_lock);
 	if (azx_dev->opened)
@@ -1464,7 +1464,7 @@ static void azx_load_dsp_cleanup(struct hda_bus *bus,
 	azx_dev->period_bytes = 0;
 	azx_dev->format_val = 0;
 
-	chip->ops->dma_free_pages(chip, dmab);
+	chip->io_ops->dma_free_pages(&bus->core, dmab);
 	dmab->area = NULL;
 
 	spin_lock_irq(&chip->reg_lock);
@@ -1483,14 +1483,14 @@ int azx_alloc_stream_pages(struct azx *chip)
 	for (i = 0; i < chip->num_streams; i++) {
 		dsp_lock_init(&chip->azx_dev[i]);
 		/* allocate memory for the BDL for each stream */
-		err = chip->ops->dma_alloc_pages(chip, SNDRV_DMA_TYPE_DEV,
+		err = chip->io_ops->dma_alloc_pages(azx_bus(chip), SNDRV_DMA_TYPE_DEV,
 						 BDL_SIZE,
 						 &chip->azx_dev[i].bdl);
 		if (err < 0)
 			return -ENOMEM;
 	}
 	/* allocate memory for the position buffer */
-	err = chip->ops->dma_alloc_pages(chip, SNDRV_DMA_TYPE_DEV,
+	err = chip->io_ops->dma_alloc_pages(azx_bus(chip), SNDRV_DMA_TYPE_DEV,
 					 chip->num_streams * 8, &chip->posbuf);
 	if (err < 0)
 		return -ENOMEM;
@@ -1509,13 +1509,13 @@ void azx_free_stream_pages(struct azx *chip)
 	if (chip->azx_dev) {
 		for (i = 0; i < chip->num_streams; i++)
 			if (chip->azx_dev[i].bdl.area)
-				chip->ops->dma_free_pages(
-					chip, &chip->azx_dev[i].bdl);
+				chip->io_ops->dma_free_pages(azx_bus(chip),
+							     &chip->azx_dev[i].bdl);
 	}
 	if (chip->rb.area)
-		chip->ops->dma_free_pages(chip, &chip->rb);
+		chip->io_ops->dma_free_pages(azx_bus(chip), &chip->rb);
 	if (chip->posbuf.area)
-		chip->ops->dma_free_pages(chip, &chip->posbuf);
+		chip->io_ops->dma_free_pages(azx_bus(chip), &chip->posbuf);
 }
 EXPORT_SYMBOL_GPL(azx_free_stream_pages);
 
@@ -1834,7 +1834,7 @@ int azx_bus_create(struct azx *chip, const char *model)
 	struct hda_bus *bus;
 	int err;
 
-	err = snd_hda_bus_new(chip->card, &bus_core_ops, &bus);
+	err = snd_hda_bus_new(chip->card, &bus_core_ops, chip->io_ops, &bus);
 	if (err < 0)
 		return err;
 
diff --git a/sound/pci/hda/hda_controller.h b/sound/pci/hda/hda_controller.h
index 15a796c21b9deab9212510495ea0bc39c41efdf1..d6b090daa7dc240fb97010cbec7885322471cf1f 100644
--- a/sound/pci/hda/hda_controller.h
+++ b/sound/pci/hda/hda_controller.h
@@ -125,21 +125,8 @@ struct azx;
 
 /* Functions to read/write to hda registers. */
 struct hda_controller_ops {
-	/* Register Access */
-	void (*reg_writel)(u32 value, u32 __iomem *addr);
-	u32 (*reg_readl)(u32 __iomem *addr);
-	void (*reg_writew)(u16 value, u16 __iomem *addr);
-	u16 (*reg_readw)(u16 __iomem *addr);
-	void (*reg_writeb)(u8 value, u8 __iomem *addr);
-	u8 (*reg_readb)(u8 __iomem *addr);
 	/* Disable msi if supported, PCI only */
 	int (*disable_msi_reset_irq)(struct azx *);
-	/* Allocation ops */
-	int (*dma_alloc_pages)(struct azx *chip,
-			       int type,
-			       size_t size,
-			       struct snd_dma_buffer *buf);
-	void (*dma_free_pages)(struct azx *chip, struct snd_dma_buffer *buf);
 	int (*substream_alloc_pages)(struct azx *chip,
 				     struct snd_pcm_substream *substream,
 				     size_t size);
@@ -179,6 +166,7 @@ struct azx {
 
 	/* Register interaction. */
 	const struct hda_controller_ops *ops;
+	const struct hdac_io_ops *io_ops;
 
 	/* position adjustment callbacks */
 	azx_get_pos_callback_t get_position[2];
@@ -239,6 +227,8 @@ struct azx {
 #endif
 };
 
+#define azx_bus(chip)	(&(chip)->bus->core)
+
 #ifdef CONFIG_X86
 #define azx_snoop(chip)		((chip)->snoop)
 #else
@@ -250,30 +240,30 @@ struct azx {
  */
 
 #define azx_writel(chip, reg, value) \
-	((chip)->ops->reg_writel(value, (chip)->remap_addr + AZX_REG_##reg))
+	((chip)->io_ops->reg_writel(value, (chip)->remap_addr + AZX_REG_##reg))
 #define azx_readl(chip, reg) \
-	((chip)->ops->reg_readl((chip)->remap_addr + AZX_REG_##reg))
+	((chip)->io_ops->reg_readl((chip)->remap_addr + AZX_REG_##reg))
 #define azx_writew(chip, reg, value) \
-	((chip)->ops->reg_writew(value, (chip)->remap_addr + AZX_REG_##reg))
+	((chip)->io_ops->reg_writew(value, (chip)->remap_addr + AZX_REG_##reg))
 #define azx_readw(chip, reg) \
-	((chip)->ops->reg_readw((chip)->remap_addr + AZX_REG_##reg))
+	((chip)->io_ops->reg_readw((chip)->remap_addr + AZX_REG_##reg))
 #define azx_writeb(chip, reg, value) \
-	((chip)->ops->reg_writeb(value, (chip)->remap_addr + AZX_REG_##reg))
+	((chip)->io_ops->reg_writeb(value, (chip)->remap_addr + AZX_REG_##reg))
 #define azx_readb(chip, reg) \
-	((chip)->ops->reg_readb((chip)->remap_addr + AZX_REG_##reg))
+	((chip)->io_ops->reg_readb((chip)->remap_addr + AZX_REG_##reg))
 
 #define azx_sd_writel(chip, dev, reg, value) \
-	((chip)->ops->reg_writel(value, (dev)->sd_addr + AZX_REG_##reg))
+	((chip)->io_ops->reg_writel(value, (dev)->sd_addr + AZX_REG_##reg))
 #define azx_sd_readl(chip, dev, reg) \
-	((chip)->ops->reg_readl((dev)->sd_addr + AZX_REG_##reg))
+	((chip)->io_ops->reg_readl((dev)->sd_addr + AZX_REG_##reg))
 #define azx_sd_writew(chip, dev, reg, value) \
-	((chip)->ops->reg_writew(value, (dev)->sd_addr + AZX_REG_##reg))
+	((chip)->io_ops->reg_writew(value, (dev)->sd_addr + AZX_REG_##reg))
 #define azx_sd_readw(chip, dev, reg) \
-	((chip)->ops->reg_readw((dev)->sd_addr + AZX_REG_##reg))
+	((chip)->io_ops->reg_readw((dev)->sd_addr + AZX_REG_##reg))
 #define azx_sd_writeb(chip, dev, reg, value) \
-	((chip)->ops->reg_writeb(value, (dev)->sd_addr + AZX_REG_##reg))
+	((chip)->io_ops->reg_writeb(value, (dev)->sd_addr + AZX_REG_##reg))
 #define azx_sd_readb(chip, dev, reg) \
-	((chip)->ops->reg_readb((dev)->sd_addr + AZX_REG_##reg))
+	((chip)->io_ops->reg_readb((dev)->sd_addr + AZX_REG_##reg))
 
 #define azx_has_pm_runtime(chip) \
 	(!AZX_DCAPS_PM_RUNTIME || ((chip)->driver_caps & AZX_DCAPS_PM_RUNTIME))
diff --git a/sound/pci/hda/hda_intel.c b/sound/pci/hda/hda_intel.c
index e1c2105155815ebc16c2fdc8e18e0ac8fe5c75d8..7492d11fd8ff0d3549da3ceec7d2b63ce1f03b9b 100644
--- a/sound/pci/hda/hda_intel.c
+++ b/sound/pci/hda/hda_intel.c
@@ -1365,9 +1365,11 @@ static void azx_probe_work(struct work_struct *work)
 /*
  * constructor
  */
+static const struct hdac_io_ops pci_hda_io_ops;
+static const struct hda_controller_ops pci_hda_ops;
+
 static int azx_create(struct snd_card *card, struct pci_dev *pci,
 		      int dev, unsigned int driver_caps,
-		      const struct hda_controller_ops *hda_ops,
 		      struct azx **rchip)
 {
 	static struct snd_device_ops ops = {
@@ -1394,7 +1396,8 @@ static int azx_create(struct snd_card *card, struct pci_dev *pci,
 	mutex_init(&chip->open_mutex);
 	chip->card = card;
 	chip->pci = pci;
-	chip->ops = hda_ops;
+	chip->ops = &pci_hda_ops;
+	chip->io_ops = &pci_hda_io_ops;
 	chip->irq = -1;
 	chip->driver_caps = driver_caps;
 	chip->driver_type = driver_caps & 0xff;
@@ -1681,15 +1684,16 @@ static int disable_msi_reset_irq(struct azx *chip)
 }
 
 /* DMA page allocation helpers.  */
-static int dma_alloc_pages(struct azx *chip,
+static int dma_alloc_pages(struct hdac_bus *bus,
 			   int type,
 			   size_t size,
 			   struct snd_dma_buffer *buf)
 {
+	struct azx *chip = to_hda_bus(bus)->private_data;
 	int err;
 
 	err = snd_dma_alloc_pages(type,
-				  chip->card->dev,
+				  bus->dev,
 				  size, buf);
 	if (err < 0)
 		return err;
@@ -1697,8 +1701,10 @@ static int dma_alloc_pages(struct azx *chip,
 	return 0;
 }
 
-static void dma_free_pages(struct azx *chip, struct snd_dma_buffer *buf)
+static void dma_free_pages(struct hdac_bus *bus, struct snd_dma_buffer *buf)
 {
+	struct azx *chip = to_hda_bus(bus)->private_data;
+
 	mark_pages_wc(chip, buf, false);
 	snd_dma_free_pages(buf);
 }
@@ -1740,16 +1746,19 @@ static void pcm_mmap_prepare(struct snd_pcm_substream *substream,
 #endif
 }
 
-static const struct hda_controller_ops pci_hda_ops = {
+static const struct hdac_io_ops pci_hda_io_ops = {
 	.reg_writel = pci_azx_writel,
 	.reg_readl = pci_azx_readl,
 	.reg_writew = pci_azx_writew,
 	.reg_readw = pci_azx_readw,
 	.reg_writeb = pci_azx_writeb,
 	.reg_readb = pci_azx_readb,
-	.disable_msi_reset_irq = disable_msi_reset_irq,
 	.dma_alloc_pages = dma_alloc_pages,
 	.dma_free_pages = dma_free_pages,
+};
+
+static const struct hda_controller_ops pci_hda_ops = {
+	.disable_msi_reset_irq = disable_msi_reset_irq,
 	.substream_alloc_pages = substream_alloc_pages,
 	.substream_free_pages = substream_free_pages,
 	.pcm_mmap_prepare = pcm_mmap_prepare,
@@ -1780,8 +1789,7 @@ static int azx_probe(struct pci_dev *pci,
 		return err;
 	}
 
-	err = azx_create(card, pci, dev, pci_id->driver_data,
-			 &pci_hda_ops, &chip);
+	err = azx_create(card, pci, dev, pci_id->driver_data, &chip);
 	if (err < 0)
 		goto out_free;
 	card->private_data = chip;
@@ -1862,6 +1870,10 @@ static int azx_probe_continue(struct azx *chip)
 #endif
 	}
 
+	err = azx_bus_create(chip, model[dev]);
+	if (err < 0)
+		goto out_free;
+
 	err = azx_first_init(chip);
 	if (err < 0)
 		goto out_free;
@@ -1871,10 +1883,6 @@ static int azx_probe_continue(struct azx *chip)
 #endif
 
 	/* create codec instances */
-	err = azx_bus_create(chip, model[dev]);
-	if (err < 0)
-		goto out_free;
-
 	err = azx_probe_codecs(chip, azx_max_codecs[chip->driver_type]);
 	if (err < 0)
 		goto out_free;
diff --git a/sound/pci/hda/hda_tegra.c b/sound/pci/hda/hda_tegra.c
index 2e4fd5c56d3b9655cdc93dee94694a851f4c689b..b150cb50961c2d404cd6042f42f17c9004648b9f 100644
--- a/sound/pci/hda/hda_tegra.c
+++ b/sound/pci/hda/hda_tegra.c
@@ -87,13 +87,13 @@ MODULE_PARM_DESC(power_save,
 /*
  * DMA page allocation ops.
  */
-static int dma_alloc_pages(struct azx *chip, int type, size_t size,
+static int dma_alloc_pages(struct hdac_bus *bus, int type, size_t size,
 			   struct snd_dma_buffer *buf)
 {
-	return snd_dma_alloc_pages(type, chip->card->dev, size, buf);
+	return snd_dma_alloc_pages(type, bus->dev, size, buf);
 }
 
-static void dma_free_pages(struct azx *chip, struct snd_dma_buffer *buf)
+static void dma_free_pages(struct hdac_bus *bus, struct snd_dma_buffer *buf)
 {
 	snd_dma_free_pages(buf);
 }
@@ -173,7 +173,7 @@ static u8 hda_tegra_readb(u8 *addr)
 	return (v >> shift) & 0xff;
 }
 
-static const struct hda_controller_ops hda_tegra_ops = {
+static const struct hdac_io_ops hda_tegra_io_ops = {
 	.reg_writel = hda_tegra_writel,
 	.reg_readl = hda_tegra_readl,
 	.reg_writew = hda_tegra_writew,
@@ -182,6 +182,9 @@ static const struct hda_controller_ops hda_tegra_ops = {
 	.reg_readb = hda_tegra_readb,
 	.dma_alloc_pages = dma_alloc_pages,
 	.dma_free_pages = dma_free_pages,
+};
+
+static const struct hda_controller_ops hda_tegra_ops = {
 	.substream_alloc_pages = substream_alloc_pages,
 	.substream_free_pages = substream_free_pages,
 };
@@ -409,7 +412,6 @@ static int hda_tegra_first_init(struct azx *chip, struct platform_device *pdev)
  */
 static int hda_tegra_create(struct snd_card *card,
 			    unsigned int driver_caps,
-			    const struct hda_controller_ops *hda_ops,
 			    struct hda_tegra *hda)
 {
 	static struct snd_device_ops ops = {
@@ -423,7 +425,8 @@ static int hda_tegra_create(struct snd_card *card,
 	spin_lock_init(&chip->reg_lock);
 	mutex_init(&chip->open_mutex);
 	chip->card = card;
-	chip->ops = hda_ops;
+	chip->ops = &hda_tegra_ops;
+	chip->io_ops = &hda_tegra_io_ops;
 	chip->irq = -1;
 	chip->driver_caps = driver_caps;
 	chip->driver_type = driver_caps & 0xff;
@@ -471,7 +474,11 @@ static int hda_tegra_probe(struct platform_device *pdev)
 		return err;
 	}
 
-	err = hda_tegra_create(card, driver_flags, &hda_tegra_ops, hda);
+	err = azx_bus_create(chip, NULL);
+	if (err < 0)
+		goto out_free;
+
+	err = hda_tegra_create(card, driver_flags, hda);
 	if (err < 0)
 		goto out_free;
 	card->private_data = chip;
@@ -483,10 +490,6 @@ static int hda_tegra_probe(struct platform_device *pdev)
 		goto out_free;
 
 	/* create codec instances */
-	err = azx_bus_create(chip, NULL);
-	if (err < 0)
-		goto out_free;
-
 	err = azx_probe_codecs(chip, 0);
 	if (err < 0)
 		goto out_free;