Add the new PCI ID 0x1d17 0x9141/0x9142/0x9144 Zhaoxin NB HDAC
support. And add some special initialization for Zhaoxin NB HDAC.
The patch is scheduled to be submitted to the kernel mainline in 2021.
Signed-off-by: LeoLiu-oc <LeoLiu-oc(a)zhaoxin.com>
---
  sound/pci/hda/hda_controller.c | 17 +++++++++++-
  sound/pci/hda/hda_controller.h |  2 ++
  sound/pci/hda/hda_intel.c      | 51 +++++++++++++++++++++++++++++++++-
  3 files changed, 68 insertions(+), 2 deletions(-)
diff --git a/sound/pci/hda/hda_controller.c b/sound/pci/hda/hda_controller.c
index 8fcb421193e0..d648119c72c9 100644
--- a/sound/pci/hda/hda_controller.c
+++ b/sound/pci/hda/hda_controller.c
@@ -1123,6 +1123,16 @@ void azx_stop_chip(struct azx *chip)
  }
  EXPORT_SYMBOL_GPL(azx_stop_chip);
+static void azx_rirb_zxdelay(struct azx *chip, int enable)
+{
+    if (chip->remap_diu_addr) {
+        if (!enable)
+            writel(0x0, (char *)chip->remap_diu_addr + 0x490a8);
+        else
+            writel(0x1000000, (char *)chip->remap_diu_addr + 0x490a8);
+    }
+}
+
  /*
   * interrupt handler
   */
@@ -1174,9 +1184,14 @@ irqreturn_t azx_interrupt(int irq, void *dev_id)
          if (status & RIRB_INT_MASK) {
              active = true;
              if (status & RIRB_INT_RESPONSE) {
-                if (chip->driver_caps & AZX_DCAPS_CTX_WORKAROUND)
+                if ((chip->driver_caps & AZX_DCAPS_CTX_WORKAROUND) ||
+                    (chip->driver_caps & AZX_DCAPS_RIRB_PRE_DELAY)) {
+                    azx_rirb_zxdelay(chip, 1);
                      udelay(80);
+                }
                  snd_hdac_bus_update_rirb(bus);
+                if (chip->driver_caps & AZX_DCAPS_RIRB_PRE_DELAY)
+                    azx_rirb_zxdelay(chip, 0);
              }
              azx_writeb(chip, RIRBSTS, RIRB_INT_MASK);
          }
diff --git a/sound/pci/hda/hda_controller.h b/sound/pci/hda/hda_controller.h
index 8a9dd4767b1e..36de9806e890 100644
--- a/sound/pci/hda/hda_controller.h
+++ b/sound/pci/hda/hda_controller.h
@@ -58,6 +58,7 @@
  #define AZX_DCAPS_CORBRP_SELF_CLEAR (1 << 28)    /* CORBRP clears 
itself after reset */
  #define AZX_DCAPS_NO_MSI64      (1 << 29)    /* Stick to 32-bit MSIs */
  #define AZX_DCAPS_SEPARATE_STREAM_TAG    (1 << 30) /* capture and 
playback use separate stream tag */
+#define AZX_DCAPS_RIRB_PRE_DELAY  (1 << 31)
  enum {
      AZX_SNOOP_TYPE_NONE,
@@ -167,6 +168,7 @@ struct azx {
      /* GTS present */
      unsigned int gts_present:1;
+    void __iomem *remap_diu_addr;
  #ifdef CONFIG_SND_HDA_DSP_LOADER
      struct azx_dev saved_azx_dev;
diff --git a/sound/pci/hda/hda_intel.c b/sound/pci/hda/hda_intel.c
index c46ab0f41fd6..a0010367c8c0 100644
--- a/sound/pci/hda/hda_intel.c
+++ b/sound/pci/hda/hda_intel.c
@@ -251,7 +251,8 @@ MODULE_SUPPORTED_DEVICE("{{Intel, ICH6},"
               "{VIA, VT8237A},"
               "{SiS, SIS966},"
               "{ULI, M5461},"
-             "{ZX, ZhaoxinHDA}}");
+             "{ZX, ZhaoxinHDA},"
+             "{ZX, ZhaoxinHDMI}}");
  MODULE_DESCRIPTION("Intel HDA driver");
  #if defined(CONFIG_PM) && defined(CONFIG_VGA_SWITCHEROO)
@@ -283,6 +284,7 @@ enum {
      AZX_DRIVER_CTHDA,
      AZX_DRIVER_CMEDIA,
      AZX_DRIVER_ZHAOXIN,
+    AZX_DRIVER_ZXHDMI,
      AZX_DRIVER_GENERIC,
      AZX_NUM_DRIVERS, /* keep this as last entry */
  };
@@ -404,6 +406,7 @@ static char *driver_short_names[] = {
      [AZX_DRIVER_CTHDA] = "HDA Creative",
      [AZX_DRIVER_CMEDIA] = "HDA C-Media",
      [AZX_DRIVER_ZHAOXIN] = "HDA Zhaoxin",
+    [AZX_DRIVER_ZXHDMI] = "HDA Zhaoxin GFX",
      [AZX_DRIVER_GENERIC] = "HD-Audio Generic",
  };
@@ -480,6 +483,29 @@ static void update_pci_byte(struct pci_dev *pci, 
unsigned int reg,
      pci_write_config_byte(pci, reg, data);
  }
+static int azx_init_chip_zx(struct azx *chip)
+{
+    struct snd_card *card = chip->card;
+    unsigned int diu_reg;
+    struct pci_dev *diu_pci = NULL;
+
+    diu_pci = pci_get_device(0x1d17, 0x3a03, NULL);
+    if (!diu_pci) {
+        dev_err(card->dev, "hda no chx001 device. \n");
+        return -ENXIO;
+    }
+    pci_read_config_dword(diu_pci, PCI_BASE_ADDRESS_0, &diu_reg);
+    chip->remap_diu_addr = ioremap_nocache(diu_reg, 0x50000);
+    dev_info(card->dev, "hda %x %p \n", diu_reg, chip->remap_diu_addr);
+    return 0;
+}
+
+static void azx_free_pci_zx(struct azx *chip)
+{
+    if (chip->remap_diu_addr)
+        iounmap(chip->remap_diu_addr);
+}
+
  static void azx_init_pci(struct azx *chip)
  {
      int snoop_type = azx_get_snoop_type(chip);
@@ -1450,6 +1476,10 @@ static int azx_free(struct azx *chip)
      hda->init_failed = 1; /* to be sure */
      complete_all(&hda->probe_wait);
+    if (chip->driver_type == AZX_DRIVER_ZXHDMI) {
+        azx_free_pci_zx(chip);
+    }
+
      if (use_vga_switcheroo(hda)) {
          if (chip->disabled && hda->probe_continued)
              snd_hda_unlock_devices(&chip->bus);
@@ -1793,6 +1823,8 @@ static int default_bdl_pos_adj(struct azx *chip)
      case AZX_DRIVER_ICH:
      case AZX_DRIVER_PCH:
          return 1;
+    case AZX_DRIVER_ZXHDMI:
+        return 128;
      default:
          return 32;
      }
@@ -1911,6 +1943,12 @@ static int azx_first_init(struct azx *chip)
      }
  #endif
+    chip->remap_diu_addr = NULL;
+
+    if (chip->driver_type == AZX_DRIVER_ZXHDMI) {
+        azx_init_chip_zx(chip);
+    }
+
      err = pci_request_regions(pci, "ICH HD audio");
      if (err < 0)
          return err;
@@ -2020,6 +2058,7 @@ static int azx_first_init(struct azx *chip)
              chip->playback_streams = ATIHDMI_NUM_PLAYBACK;
              chip->capture_streams = ATIHDMI_NUM_CAPTURE;
              break;
+        case AZX_DRIVER_ZXHDMI:
          case AZX_DRIVER_GENERIC:
          default:
              chip->playback_streams = ICH6_NUM_PLAYBACK;
@@ -2752,6 +2791,11 @@ static const struct pci_device_id azx_ids[] = {
      { PCI_DEVICE(0x1106, 0x9170), .driver_data = AZX_DRIVER_GENERIC },
      /* VIA GFX VT6122/VX11 */
      { PCI_DEVICE(0x1106, 0x9140), .driver_data = AZX_DRIVER_GENERIC },
+    { PCI_DEVICE(0x1106, 0x9141), .driver_data = AZX_DRIVER_GENERIC  },
+    { PCI_DEVICE(0x1106, 0x9142),
+      .driver_data = AZX_DRIVER_ZXHDMI | AZX_DCAPS_POSFIX_LPIB | 
AZX_DCAPS_NO_MSI | AZX_DCAPS_RIRB_PRE_DELAY },
+    { PCI_DEVICE(0x1106, 0x9144),
+      .driver_data = AZX_DRIVER_ZXHDMI | AZX_DCAPS_POSFIX_LPIB | 
AZX_DCAPS_NO_MSI | AZX_DCAPS_RIRB_PRE_DELAY },
      /* SIS966 */
      { PCI_DEVICE(0x1039, 0x7502), .driver_data = AZX_DRIVER_SIS },
      /* ULI M5461 */
@@ -2807,6 +2851,11 @@ static const struct pci_device_id azx_ids[] = {
        .driver_data = AZX_DRIVER_GENERIC | AZX_DCAPS_PRESET_ATI_HDMI },
      /* Zhaoxin */
      { PCI_DEVICE(0x1d17, 0x3288), .driver_data = AZX_DRIVER_ZHAOXIN  },
+    { PCI_DEVICE(0x1d17, 0x9141), .driver_data = AZX_DRIVER_GENERIC  },
+    { PCI_DEVICE(0x1d17, 0x9142),
+      .driver_data = AZX_DRIVER_ZXHDMI | AZX_DCAPS_POSFIX_LPIB | 
AZX_DCAPS_NO_MSI | AZX_DCAPS_RIRB_PRE_DELAY },
+    { PCI_DEVICE(0x1d17, 0x9144),
+      .driver_data = AZX_DRIVER_ZXHDMI | AZX_DCAPS_POSFIX_LPIB | 
AZX_DCAPS_NO_MSI | AZX_DCAPS_RIRB_PRE_DELAY },
      { 0, }
  };
  MODULE_DEVICE_TABLE(pci, azx_ids);
-- 
2.20.1