ALSA: hda - Add function pointer for disabling MSI

This is a PCI-only feature, but adding a callback for it in the chip
structure breaks the PCI dependency in the RIRB code allowing the
logic there to be re-used by the platform HDA driver.

Signed-off-by: Dylan Reid <dgreid@chromium.org>
Signed-off-by: Takashi Iwai <tiwai@suse.de>

2 files changed, 22 insertions, 5 deletions

diff --git a/sound/pci/hda/hda_intel.c b/sound/pci/hda/hda_intel.c
index 7630622e7f0f..c4b6447bfc7e 100644
--- a/sound/pci/hda/hda_intel.c
+++ b/sound/pci/hda/hda_intel.c
@@ -600,11 +600,8 @@ static unsigned int azx_rirb_get_response(struct hda_bus *bus,
                 dev_warn(chip->card->dev,
                          "No response from codec, disabling MSI: last cmd=0x%08x\n",
                          chip->last_cmd[addr]);
-                free_irq(chip->irq, chip);
-                chip->irq = -1;
-                pci_disable_msi(chip->pci);
-                chip->msi = 0;
-                if (azx_acquire_irq(chip, 1) < 0) {
+                if (chip->ops->disable_msi_reset_irq &&
+                    chip->ops->disable_msi_reset_irq(chip) < 0) {
                         bus->rirb_error = 1;
                         return -1;
                 }
@@ -3469,6 +3466,21 @@ static u8 pci_azx_readb(u8 *addr)
         return readb(addr);
 }
 
+static int disable_msi_reset_irq(struct azx *chip)
+{
+        int err;
+
+        free_irq(chip->irq, chip);
+        chip->irq = -1;
+        pci_disable_msi(chip->pci);
+        chip->msi = 0;
+        err = azx_acquire_irq(chip, 1);
+        if (err < 0)
+                return err;
+
+        return 0;
+}
+
 static const struct hda_controller_ops pci_hda_ops = {
         .writel = pci_azx_writel,
         .readl = pci_azx_readl,
@@ -3476,6 +3488,7 @@ static const struct hda_controller_ops pci_hda_ops = {
         .readw = pci_azx_readw,
         .writeb = pci_azx_writeb,
         .readb = pci_azx_readb,
+        .disable_msi_reset_irq = disable_msi_reset_irq,
 };
 
 static int azx_probe(struct pci_dev *pci,
diff --git a/sound/pci/hda/hda_priv.h b/sound/pci/hda/hda_priv.h
index 17afe90e90de..c231c11d8669 100644
--- a/sound/pci/hda/hda_priv.h
+++ b/sound/pci/hda/hda_priv.h
@@ -285,6 +285,8 @@ struct azx_rb {
         u32 res[AZX_MAX_CODECS];        /* last read value */
 };
 
+struct azx;
+
 /* Functions to read/write to hda registers. */
 struct hda_controller_ops {
         /* Register Access */
@@ -294,6 +296,8 @@ struct hda_controller_ops {
         u16 (*readw)(u16 *addr);
         void (*writeb)(u8 value, u8 *addr);
         u8 (*readb)(u8 *addr);
+        /* Disable msi if supported, PCI only */
+        int (*disable_msi_reset_irq)(struct azx *);
 };
 
 struct azx_pcm {