Merge tag 'pci-v6.17-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/pci/pci
authorLinus Torvalds <torvalds@linux-foundation.org>
Fri, 1 Aug 2025 20:59:07 +0000 (13:59 -0700)
committerLinus Torvalds <torvalds@linux-foundation.org>
Fri, 1 Aug 2025 20:59:07 +0000 (13:59 -0700)
Pull PCI updates from Bjorn Helgaas:
 "Enumeration:

   - Allow built-in drivers, not just modular drivers, to use async
     initial probing (Lukas Wunner)

   - Support Immediate Readiness even on devices with no PM Capability
     (Sean Christopherson)

   - Consolidate definition of PCIE_RESET_CONFIG_WAIT_MS (100ms), the
     required delay between a reset and sending config requests to a
     device (Niklas Cassel)

   - Add pci_is_display() to check for "Display" base class and use it
     in ALSA hda, vfio, vga_switcheroo, vt-d (Mario Limonciello)

   - Allow 'isolated PCI functions' (multi-function devices without a
     function 0) for LoongArch, similar to s390 and jailhouse (Huacai
     Chen)

  Power control:

   - Add ability to enable optional slot clock for cases where the PCIe
     host controller and the slot are supplied by different clocks
     (Marek Vasut)

  PCIe native device hotplug:

   - Fix runtime PM ref imbalance on Hot-Plug Capable ports caused by
     misinterpreting a config read failure after a device has been
     removed (Lukas Wunner)

   - Avoid creating a useless PCIe port service device for pciehp if the
     slot is handled by the ACPI hotplug driver (Lukas Wunner)

   - Ignore ACPI hotplug slots when calculating depth of pciehp hotplug
     ports (Lukas Wunner)

  Virtualization:

   - Save VF resizable BAR state and restore it after reset (Michał
     Winiarski)

   - Allow IOV resources (VF BARs) to be resized (Michał Winiarski)

   - Add pci_iov_vf_bar_set_size() so drivers can control VF BAR size
     (Michał Winiarski)

  Endpoint framework:

   - Add RC-to-EP doorbell support using platform MSI controller,
     including a test case (Frank Li)

   - Allow BAR assignment via configfs so platforms have flexibility in
     determining BAR usage (Jerome Brunet)

  Native PCIe controller drivers:

   - Convert amazon,al-alpine-v[23]-pcie, apm,xgene-pcie,
     axis,artpec6-pcie, marvell,armada-3700-pcie, st,spear1340-pcie to
     DT schema format (Rob Herring)

   - Use dev_fwnode() instead of of_fwnode_handle() to remove OF
     dependency in altera (fixes an unused variable), designware-host,
     mediatek, mediatek-gen3, mobiveil, plda, xilinx, xilinx-dma,
     xilinx-nwl (Jiri Slaby, Arnd Bergmann)

   - Convert aardvark, altera, brcmstb, designware-host, iproc,
     mediatek, mediatek-gen3, mobiveil, plda, rcar-host, vmd, xilinx,
     xilinx-dma, xilinx-nwl from using pci_msi_create_irq_domain() to
     using msi_create_parent_irq_domain() instead; this makes the
     interrupt controller per-PCI device, allows dynamic allocation of
     vectors after initialization, and allows support of IMS (Nam Cao)

  APM X-Gene PCIe controller driver:

   - Rewrite MSI handling to MSI CPU affinity, drop useless CPU hotplug
     bits, use device-managed memory allocations, and clean things up
     (Marc Zyngier)

   - Probe xgene-msi as a standard platform driver rather than a
     subsys_initcall (Marc Zyngier)

  Broadcom STB PCIe controller driver:

   - Add optional DT 'num-lanes' property and if present, use it to
     override the Maximum Link Width advertised in Link Capabilities
     (Jim Quinlan)

  Cadence PCIe controller driver:

   - Use PCIe Message routing types from the PCI core rather than
     defining private ones (Hans Zhang)

  Freescale i.MX6 PCIe controller driver:

   - Add IMX8MQ_EP third 64-bit BAR in epc_features (Richard Zhu)

   - Add IMX8MM_EP and IMX8MP_EP fixed 256-byte BAR 4 in epc_features
     (Richard Zhu)

   - Configure LUT for MSI/IOMMU in Endpoint mode so Root Complex can
     trigger doorbel on Endpoint (Frank Li)

   - Remove apps_reset (LTSSM_EN) from
     imx_pcie_{assert,deassert}_core_reset(), which fixes a hotplug
     regression on i.MX8MM (Richard Zhu)

   - Delay Endpoint link start until configfs 'start' written (Richard
     Zhu)

  Intel VMD host bridge driver:

   - Add Intel Panther Lake (PTL)-H/P/U Vendor ID (George D Sworo)

  Qualcomm PCIe controller driver:

   - Add DT binding and driver support for SA8255p, which supports ECAM
     for Configuration Space access (Mayank Rana)

   - Update DT binding and driver to describe PHYs and per-Root Port
     resets in a Root Port stanza and deprecate describing them in the
     host bridge; this makes it possible to support multiple Root Ports
     in the future (Krishna Chaitanya Chundru)

   - Add Qualcomm QCS615 to SM8150 DT binding (Ziyue Zhang)

   - Add Qualcomm QCS8300 to SA8775p DT binding (Ziyue Zhang)

   - Drop TBU and ref clocks from Qualcomm SM8150 and SC8180x DT
     bindings (Konrad Dybcio)

   - Document 'link_down' reset in Qualcomm SA8775P DT binding (Ziyue
     Zhang)

   - Add required PCIE_RESET_CONFIG_WAIT_MS delay after Link up IRQ
     (Niklas Cassel)

  Rockchip PCIe controller driver:

   - Drop unused PCIe Message routing and code definitions (Hans Zhang)

   - Remove several unused header includes (Hans Zhang)

   - Use standard PCIe config register definitions instead of
     rockchip-specific redefinitions (Geraldo Nascimento)

   - Set Target Link Speed to 5.0 GT/s before retraining so we have a
     chance to train at a higher speed (Geraldo Nascimento)

  Rockchip DesignWare PCIe controller driver:

   - Prevent race between link training and register update via DBI by
     inhibiting link training after hot reset and link down (Wilfred
     Mallawa)

   - Add required PCIE_RESET_CONFIG_WAIT_MS delay after Link up IRQ
     (Niklas Cassel)

  Sophgo PCIe controller driver:

   - Add DT binding and driver for Sophgo SG2044 PCIe controller driver
     in Root Complex mode (Inochi Amaoto)

  Synopsys DesignWare PCIe controller driver:

   - Add required PCIE_RESET_CONFIG_WAIT_MS after waiting for Link up on
     Ports that support > 5.0 GT/s. Slower Ports still rely on the
     not-quite-correct PCIE_LINK_WAIT_SLEEP_MS 90ms default delay while
     waiting for the Link (Niklas Cassel)"

* tag 'pci-v6.17-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/pci/pci: (116 commits)
  dt-bindings: PCI: qcom,pcie-sa8775p: Document 'link_down' reset
  dt-bindings: PCI: Remove 83xx-512x-pci.txt
  dt-bindings: PCI: Convert amazon,al-alpine-v[23]-pcie to DT schema
  dt-bindings: PCI: Convert marvell,armada-3700-pcie to DT schema
  dt-bindings: PCI: Convert apm,xgene-pcie to DT schema
  dt-bindings: PCI: Convert axis,artpec6-pcie to DT schema
  dt-bindings: PCI: Convert st,spear1340-pcie to DT schema
  PCI: Move is_pciehp check out of pciehp_is_native()
  PCI: pciehp: Use is_pciehp instead of is_hotplug_bridge
  PCI/portdrv: Use is_pciehp instead of is_hotplug_bridge
  PCI/ACPI: Fix runtime PM ref imbalance on Hot-Plug Capable ports
  selftests: pci_endpoint: Add doorbell test case
  misc: pci_endpoint_test: Add doorbell test case
  PCI: endpoint: pci-epf-test: Add doorbell test support
  PCI: endpoint: Add pci_epf_align_inbound_addr() helper for inbound address alignment
  PCI: endpoint: pci-ep-msi: Add checks for MSI parent and mutability
  PCI: endpoint: Add RC-to-EP doorbell support using platform MSI controller
  PCI: dwc: Add Sophgo SG2044 PCIe controller driver in Root Complex mode
  PCI: vmd: Switch to msi_create_parent_irq_domain()
  PCI: vmd: Convert to lock guards
  ...

15 files changed:
1  2 
MAINTAINERS
drivers/iommu/intel/iommu.c
drivers/pci/controller/pci-host-common.c
drivers/pci/hotplug/pciehp_hpc.c
drivers/pci/msi/msi.c
drivers/pci/pci-acpi.c
drivers/pci/pci-driver.c
drivers/pci/pci.c
drivers/pci/pcie/ptm.c
drivers/pci/probe.c
drivers/pci/quirks.c
include/linux/cpuhotplug.h
kernel/irq/chip.c
sound/hda/controllers/intel.c
sound/hda/core/i915.c

diff --cc MAINTAINERS
Simple merge
Simple merge
index b37052863847162d852ceb0cc8f3cda1af373c78,5b61b5a9e0f9eb73f51ce371e8e3f0549e3b0783..810d1c8de24e93081a9f07137359c32ed1d2db94
@@@ -64,10 -65,8 +65,10 @@@ int pci_host_common_init(struct platfor
  
        of_pci_check_probe_only();
  
 +      platform_set_drvdata(pdev, bridge);
 +
        /* Parse and map our Configuration Space windows */
-       cfg = gen_pci_init(dev, bridge, ops);
+       cfg = pci_host_common_ecam_create(dev, bridge, ops);
        if (IS_ERR(cfg))
                return PTR_ERR(cfg);
  
Simple merge
Simple merge
Simple merge
Simple merge
index 9e42090fb108920995ebe34bd2535a0e23fef7fd,a6004513a50d6d098ed05529a466c80f93d33c1d..b0f4d98036cddddd88e2011da09aa6719b738651
@@@ -3266,10 -3273,6 +3273,7 @@@ void pci_pm_init(struct pci_dev *dev
                pci_pme_active(dev, false);
        }
  
-       pci_read_config_word(dev, PCI_STATUS, &status);
-       if (status & PCI_STATUS_IMM_READY)
-               dev->imm_ready = 1;
 +poweron:
        pci_pm_power_up_and_verify_state(dev);
        pm_runtime_forbid(&dev->dev);
        pm_runtime_set_active(&dev->dev);
Simple merge
Simple merge
Simple merge
Simple merge
Simple merge
index 32bfd92d817fa57980ea4a3aabca976cc5db0f55,0000000000000000000000000000000000000000..fcf67e97a546a2ff66912df2093e2bd528e4f099
mode 100644,000000..100644
--- /dev/null
@@@ -1,2834 -1,0 +1,2834 @@@
-                               if (((p->class >> 16) == PCI_BASE_CLASS_DISPLAY) &&
 +// SPDX-License-Identifier: GPL-2.0-or-later
 +/*
 + *
 + *  hda_intel.c - Implementation of primary alsa driver code base
 + *                for Intel HD Audio.
 + *
 + *  Copyright(c) 2004 Intel Corporation
 + *
 + *  Copyright (c) 2004 Takashi Iwai <tiwai@suse.de>
 + *                     PeiSen Hou <pshou@realtek.com.tw>
 + *
 + *  CONTACTS:
 + *
 + *  Matt Jared                matt.jared@intel.com
 + *  Andy Kopp         andy.kopp@intel.com
 + *  Dan Kogan         dan.d.kogan@intel.com
 + *
 + *  CHANGES:
 + *
 + *  2004.12.01        Major rewrite by tiwai, merged the work of pshou
 + */
 +
 +#include <linux/delay.h>
 +#include <linux/interrupt.h>
 +#include <linux/kernel.h>
 +#include <linux/module.h>
 +#include <linux/dma-mapping.h>
 +#include <linux/moduleparam.h>
 +#include <linux/init.h>
 +#include <linux/slab.h>
 +#include <linux/pci.h>
 +#include <linux/mutex.h>
 +#include <linux/io.h>
 +#include <linux/pm_runtime.h>
 +#include <linux/clocksource.h>
 +#include <linux/time.h>
 +#include <linux/completion.h>
 +#include <linux/acpi.h>
 +#include <linux/pgtable.h>
 +#include <linux/dmi.h>
 +
 +#ifdef CONFIG_X86
 +/* for snoop control */
 +#include <asm/set_memory.h>
 +#include <asm/cpufeature.h>
 +#endif
 +#include <sound/core.h>
 +#include <sound/initval.h>
 +#include <sound/hdaudio.h>
 +#include <sound/hda_i915.h>
 +#include <sound/intel-dsp-config.h>
 +#include <linux/vgaarb.h>
 +#include <linux/vga_switcheroo.h>
 +#include <linux/apple-gmux.h>
 +#include <linux/firmware.h>
 +#include <sound/hda_codec.h>
 +#include "intel.h"
 +
 +#define CREATE_TRACE_POINTS
 +#include "intel_trace.h"
 +
 +/* position fix mode */
 +enum {
 +      POS_FIX_AUTO,
 +      POS_FIX_LPIB,
 +      POS_FIX_POSBUF,
 +      POS_FIX_VIACOMBO,
 +      POS_FIX_COMBO,
 +      POS_FIX_SKL,
 +      POS_FIX_FIFO,
 +};
 +
 +/* Defines for ATI HD Audio support in SB450 south bridge */
 +#define ATI_SB450_HDAUDIO_MISC_CNTR2_ADDR   0x42
 +#define ATI_SB450_HDAUDIO_ENABLE_SNOOP      0x02
 +
 +/* Defines for Nvidia HDA support */
 +#define NVIDIA_HDA_TRANSREG_ADDR      0x4e
 +#define NVIDIA_HDA_ENABLE_COHBITS     0x0f
 +#define NVIDIA_HDA_ISTRM_COH          0x4d
 +#define NVIDIA_HDA_OSTRM_COH          0x4c
 +#define NVIDIA_HDA_ENABLE_COHBIT      0x01
 +
 +/* Defines for Intel SCH HDA snoop control */
 +#define INTEL_HDA_CGCTL        0x48
 +#define INTEL_HDA_CGCTL_MISCBDCGE        (0x1 << 6)
 +#define INTEL_SCH_HDA_DEVC      0x78
 +#define INTEL_SCH_HDA_DEVC_NOSNOOP       (0x1<<11)
 +
 +/* max number of SDs */
 +/* ICH, ATI and VIA have 4 playback and 4 capture */
 +#define ICH6_NUM_CAPTURE      4
 +#define ICH6_NUM_PLAYBACK     4
 +
 +/* ULI has 6 playback and 5 capture */
 +#define ULI_NUM_CAPTURE               5
 +#define ULI_NUM_PLAYBACK      6
 +
 +/* ATI HDMI may have up to 8 playbacks and 0 capture */
 +#define ATIHDMI_NUM_CAPTURE   0
 +#define ATIHDMI_NUM_PLAYBACK  8
 +
 +
 +static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX;
 +static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR;
 +static bool enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE_PNP;
 +static char *model[SNDRV_CARDS];
 +static int position_fix[SNDRV_CARDS] = {[0 ... (SNDRV_CARDS-1)] = -1};
 +static int bdl_pos_adj[SNDRV_CARDS] = {[0 ... (SNDRV_CARDS-1)] = -1};
 +static int probe_mask[SNDRV_CARDS] = {[0 ... (SNDRV_CARDS-1)] = -1};
 +static int probe_only[SNDRV_CARDS];
 +static int jackpoll_ms[SNDRV_CARDS];
 +static int single_cmd = -1;
 +static int enable_msi = -1;
 +#ifdef CONFIG_SND_HDA_PATCH_LOADER
 +static char *patch[SNDRV_CARDS];
 +#endif
 +#ifdef CONFIG_SND_HDA_INPUT_BEEP
 +static bool beep_mode[SNDRV_CARDS] = {[0 ... (SNDRV_CARDS-1)] =
 +                                      CONFIG_SND_HDA_INPUT_BEEP_MODE};
 +#endif
 +static bool dmic_detect = 1;
 +static bool ctl_dev_id = IS_ENABLED(CONFIG_SND_HDA_CTL_DEV_ID) ? 1 : 0;
 +
 +module_param_array(index, int, NULL, 0444);
 +MODULE_PARM_DESC(index, "Index value for Intel HD audio interface.");
 +module_param_array(id, charp, NULL, 0444);
 +MODULE_PARM_DESC(id, "ID string for Intel HD audio interface.");
 +module_param_array(enable, bool, NULL, 0444);
 +MODULE_PARM_DESC(enable, "Enable Intel HD audio interface.");
 +module_param_array(model, charp, NULL, 0444);
 +MODULE_PARM_DESC(model, "Use the given board model.");
 +module_param_array(position_fix, int, NULL, 0444);
 +MODULE_PARM_DESC(position_fix, "DMA pointer read method."
 +               "(-1 = system default, 0 = auto, 1 = LPIB, 2 = POSBUF, 3 = VIACOMBO, 4 = COMBO, 5 = SKL+, 6 = FIFO).");
 +module_param_array(bdl_pos_adj, int, NULL, 0644);
 +MODULE_PARM_DESC(bdl_pos_adj, "BDL position adjustment offset.");
 +module_param_array(probe_mask, int, NULL, 0444);
 +MODULE_PARM_DESC(probe_mask, "Bitmask to probe codecs (default = -1).");
 +module_param_array(probe_only, int, NULL, 0444);
 +MODULE_PARM_DESC(probe_only, "Only probing and no codec initialization.");
 +module_param_array(jackpoll_ms, int, NULL, 0444);
 +MODULE_PARM_DESC(jackpoll_ms, "Ms between polling for jack events (default = 0, using unsol events only)");
 +module_param(single_cmd, bint, 0444);
 +MODULE_PARM_DESC(single_cmd, "Use single command to communicate with codecs "
 +               "(for debugging only).");
 +module_param(enable_msi, bint, 0444);
 +MODULE_PARM_DESC(enable_msi, "Enable Message Signaled Interrupt (MSI)");
 +#ifdef CONFIG_SND_HDA_PATCH_LOADER
 +module_param_array(patch, charp, NULL, 0444);
 +MODULE_PARM_DESC(patch, "Patch file for Intel HD audio interface.");
 +#endif
 +#ifdef CONFIG_SND_HDA_INPUT_BEEP
 +module_param_array(beep_mode, bool, NULL, 0444);
 +MODULE_PARM_DESC(beep_mode, "Select HDA Beep registration mode "
 +                          "(0=off, 1=on) (default=1).");
 +#endif
 +module_param(dmic_detect, bool, 0444);
 +MODULE_PARM_DESC(dmic_detect, "Allow DSP driver selection (bypass this driver) "
 +                           "(0=off, 1=on) (default=1); "
 +               "deprecated, use snd-intel-dspcfg.dsp_driver option instead");
 +module_param(ctl_dev_id, bool, 0444);
 +MODULE_PARM_DESC(ctl_dev_id, "Use control device identifier (based on codec address).");
 +
 +#ifdef CONFIG_PM
 +static int param_set_xint(const char *val, const struct kernel_param *kp);
 +static const struct kernel_param_ops param_ops_xint = {
 +      .set = param_set_xint,
 +      .get = param_get_int,
 +};
 +#define param_check_xint param_check_int
 +
 +static int power_save = CONFIG_SND_HDA_POWER_SAVE_DEFAULT;
 +module_param(power_save, xint, 0644);
 +MODULE_PARM_DESC(power_save, "Automatic power-saving timeout "
 +               "(in second, 0 = disable).");
 +
 +static int pm_blacklist = -1;
 +module_param(pm_blacklist, bint, 0644);
 +MODULE_PARM_DESC(pm_blacklist, "Enable power-management denylist");
 +
 +/* reset the HD-audio controller in power save mode.
 + * this may give more power-saving, but will take longer time to
 + * wake up.
 + */
 +static bool power_save_controller = 1;
 +module_param(power_save_controller, bool, 0644);
 +MODULE_PARM_DESC(power_save_controller, "Reset controller in power save mode.");
 +#else /* CONFIG_PM */
 +#define power_save    0
 +#define pm_blacklist  0
 +#define power_save_controller false
 +#endif /* CONFIG_PM */
 +
 +static int align_buffer_size = -1;
 +module_param(align_buffer_size, bint, 0644);
 +MODULE_PARM_DESC(align_buffer_size,
 +              "Force buffer and period sizes to be multiple of 128 bytes.");
 +
 +#ifdef CONFIG_X86
 +static int hda_snoop = -1;
 +module_param_named(snoop, hda_snoop, bint, 0444);
 +MODULE_PARM_DESC(snoop, "Enable/disable snooping");
 +#else
 +#define hda_snoop             true
 +#endif
 +
 +
 +MODULE_LICENSE("GPL");
 +MODULE_DESCRIPTION("Intel HDA driver");
 +
 +#if defined(CONFIG_PM) && defined(CONFIG_VGA_SWITCHEROO)
 +#if IS_ENABLED(CONFIG_SND_HDA_CODEC_HDMI)
 +#define SUPPORT_VGA_SWITCHEROO
 +#endif
 +#endif
 +
 +
 +/*
 + */
 +
 +/* driver types */
 +enum {
 +      AZX_DRIVER_ICH,
 +      AZX_DRIVER_PCH,
 +      AZX_DRIVER_SCH,
 +      AZX_DRIVER_SKL,
 +      AZX_DRIVER_HDMI,
 +      AZX_DRIVER_ATI,
 +      AZX_DRIVER_ATIHDMI,
 +      AZX_DRIVER_ATIHDMI_NS,
 +      AZX_DRIVER_GFHDMI,
 +      AZX_DRIVER_VIA,
 +      AZX_DRIVER_SIS,
 +      AZX_DRIVER_ULI,
 +      AZX_DRIVER_NVIDIA,
 +      AZX_DRIVER_TERA,
 +      AZX_DRIVER_CTX,
 +      AZX_DRIVER_CTHDA,
 +      AZX_DRIVER_CMEDIA,
 +      AZX_DRIVER_ZHAOXIN,
 +      AZX_DRIVER_ZHAOXINHDMI,
 +      AZX_DRIVER_LOONGSON,
 +      AZX_DRIVER_GENERIC,
 +      AZX_NUM_DRIVERS, /* keep this as last entry */
 +};
 +
 +#define azx_get_snoop_type(chip) \
 +      (((chip)->driver_caps & AZX_DCAPS_SNOOP_MASK) >> 10)
 +#define AZX_DCAPS_SNOOP_TYPE(type) ((AZX_SNOOP_TYPE_ ## type) << 10)
 +
 +/* quirks for old Intel chipsets */
 +#define AZX_DCAPS_INTEL_ICH \
 +      (AZX_DCAPS_OLD_SSYNC | AZX_DCAPS_NO_ALIGN_BUFSIZE)
 +
 +/* quirks for Intel PCH */
 +#define AZX_DCAPS_INTEL_PCH_BASE \
 +      (AZX_DCAPS_NO_ALIGN_BUFSIZE | AZX_DCAPS_COUNT_LPIB_DELAY |\
 +       AZX_DCAPS_SNOOP_TYPE(SCH))
 +
 +/* PCH up to IVB; no runtime PM; bind with i915 gfx */
 +#define AZX_DCAPS_INTEL_PCH_NOPM \
 +      (AZX_DCAPS_INTEL_PCH_BASE | AZX_DCAPS_I915_COMPONENT)
 +
 +/* PCH for HSW/BDW; with runtime PM */
 +/* no i915 binding for this as HSW/BDW has another controller for HDMI */
 +#define AZX_DCAPS_INTEL_PCH \
 +      (AZX_DCAPS_INTEL_PCH_BASE | AZX_DCAPS_PM_RUNTIME)
 +
 +/* HSW HDMI */
 +#define AZX_DCAPS_INTEL_HASWELL \
 +      (/*AZX_DCAPS_ALIGN_BUFSIZE |*/ AZX_DCAPS_COUNT_LPIB_DELAY |\
 +       AZX_DCAPS_PM_RUNTIME | AZX_DCAPS_I915_COMPONENT |\
 +       AZX_DCAPS_SNOOP_TYPE(SCH))
 +
 +/* Broadwell HDMI can't use position buffer reliably, force to use LPIB */
 +#define AZX_DCAPS_INTEL_BROADWELL \
 +      (/*AZX_DCAPS_ALIGN_BUFSIZE |*/ AZX_DCAPS_POSFIX_LPIB |\
 +       AZX_DCAPS_PM_RUNTIME | AZX_DCAPS_I915_COMPONENT |\
 +       AZX_DCAPS_SNOOP_TYPE(SCH))
 +
 +#define AZX_DCAPS_INTEL_BAYTRAIL \
 +      (AZX_DCAPS_INTEL_PCH_BASE | AZX_DCAPS_I915_COMPONENT)
 +
 +#define AZX_DCAPS_INTEL_BRASWELL \
 +      (AZX_DCAPS_INTEL_PCH_BASE | AZX_DCAPS_PM_RUNTIME |\
 +       AZX_DCAPS_I915_COMPONENT)
 +
 +#define AZX_DCAPS_INTEL_SKYLAKE \
 +      (AZX_DCAPS_INTEL_PCH_BASE | AZX_DCAPS_PM_RUNTIME |\
 +       AZX_DCAPS_SEPARATE_STREAM_TAG | AZX_DCAPS_I915_COMPONENT)
 +
 +#define AZX_DCAPS_INTEL_BROXTON               AZX_DCAPS_INTEL_SKYLAKE
 +
 +#define AZX_DCAPS_INTEL_LNL \
 +      (AZX_DCAPS_INTEL_SKYLAKE | AZX_DCAPS_PIO_COMMANDS)
 +
 +/* quirks for ATI SB / AMD Hudson */
 +#define AZX_DCAPS_PRESET_ATI_SB \
 +      (AZX_DCAPS_NO_TCSEL | AZX_DCAPS_POSFIX_LPIB |\
 +       AZX_DCAPS_SNOOP_TYPE(ATI))
 +
 +/* quirks for ATI/AMD HDMI */
 +#define AZX_DCAPS_PRESET_ATI_HDMI \
 +      (AZX_DCAPS_NO_TCSEL | AZX_DCAPS_POSFIX_LPIB|\
 +       AZX_DCAPS_NO_MSI64)
 +
 +/* quirks for ATI HDMI with snoop off */
 +#define AZX_DCAPS_PRESET_ATI_HDMI_NS \
 +      (AZX_DCAPS_PRESET_ATI_HDMI | AZX_DCAPS_SNOOP_OFF)
 +
 +/* quirks for AMD SB */
 +#define AZX_DCAPS_PRESET_AMD_SB \
 +      (AZX_DCAPS_NO_TCSEL | AZX_DCAPS_AMD_WORKAROUND |\
 +       AZX_DCAPS_SNOOP_TYPE(ATI) | AZX_DCAPS_PM_RUNTIME |\
 +       AZX_DCAPS_RETRY_PROBE)
 +
 +/* quirks for Nvidia */
 +#define AZX_DCAPS_PRESET_NVIDIA \
 +      (AZX_DCAPS_NO_MSI | AZX_DCAPS_CORBRP_SELF_CLEAR |\
 +       AZX_DCAPS_SNOOP_TYPE(NVIDIA))
 +
 +#define AZX_DCAPS_PRESET_CTHDA \
 +      (AZX_DCAPS_NO_MSI | AZX_DCAPS_POSFIX_LPIB |\
 +       AZX_DCAPS_NO_64BIT |\
 +       AZX_DCAPS_4K_BDLE_BOUNDARY | AZX_DCAPS_SNOOP_OFF)
 +
 +/*
 + * vga_switcheroo support
 + */
 +#ifdef SUPPORT_VGA_SWITCHEROO
 +#define use_vga_switcheroo(chip)      ((chip)->use_vga_switcheroo)
 +#define needs_eld_notify_link(chip)   ((chip)->bus.keep_power)
 +#else
 +#define use_vga_switcheroo(chip)      0
 +#define needs_eld_notify_link(chip)   false
 +#endif
 +
 +static const char * const driver_short_names[] = {
 +      [AZX_DRIVER_ICH] = "HDA Intel",
 +      [AZX_DRIVER_PCH] = "HDA Intel PCH",
 +      [AZX_DRIVER_SCH] = "HDA Intel MID",
 +      [AZX_DRIVER_SKL] = "HDA Intel PCH", /* kept old name for compatibility */
 +      [AZX_DRIVER_HDMI] = "HDA Intel HDMI",
 +      [AZX_DRIVER_ATI] = "HDA ATI SB",
 +      [AZX_DRIVER_ATIHDMI] = "HDA ATI HDMI",
 +      [AZX_DRIVER_ATIHDMI_NS] = "HDA ATI HDMI",
 +      [AZX_DRIVER_GFHDMI] = "HDA GF HDMI",
 +      [AZX_DRIVER_VIA] = "HDA VIA VT82xx",
 +      [AZX_DRIVER_SIS] = "HDA SIS966",
 +      [AZX_DRIVER_ULI] = "HDA ULI M5461",
 +      [AZX_DRIVER_NVIDIA] = "HDA NVidia",
 +      [AZX_DRIVER_TERA] = "HDA Teradici", 
 +      [AZX_DRIVER_CTX] = "HDA Creative", 
 +      [AZX_DRIVER_CTHDA] = "HDA Creative",
 +      [AZX_DRIVER_CMEDIA] = "HDA C-Media",
 +      [AZX_DRIVER_ZHAOXIN] = "HDA Zhaoxin",
 +      [AZX_DRIVER_ZHAOXINHDMI] = "HDA Zhaoxin HDMI",
 +      [AZX_DRIVER_LOONGSON] = "HDA Loongson",
 +      [AZX_DRIVER_GENERIC] = "HD-Audio Generic",
 +};
 +
 +static int azx_acquire_irq(struct azx *chip, int do_disconnect);
 +static void set_default_power_save(struct azx *chip);
 +
 +/*
 + * initialize the PCI registers
 + */
 +/* update bits in a PCI register byte */
 +static void update_pci_byte(struct pci_dev *pci, unsigned int reg,
 +                          unsigned char mask, unsigned char val)
 +{
 +      unsigned char data;
 +
 +      pci_read_config_byte(pci, reg, &data);
 +      data &= ~mask;
 +      data |= (val & mask);
 +      pci_write_config_byte(pci, reg, data);
 +}
 +
 +static void azx_init_pci(struct azx *chip)
 +{
 +      int snoop_type = azx_get_snoop_type(chip);
 +
 +      /* Clear bits 0-2 of PCI register TCSEL (at offset 0x44)
 +       * TCSEL == Traffic Class Select Register, which sets PCI express QOS
 +       * Ensuring these bits are 0 clears playback static on some HD Audio
 +       * codecs.
 +       * The PCI register TCSEL is defined in the Intel manuals.
 +       */
 +      if (!(chip->driver_caps & AZX_DCAPS_NO_TCSEL)) {
 +              dev_dbg(chip->card->dev, "Clearing TCSEL\n");
 +              update_pci_byte(chip->pci, AZX_PCIREG_TCSEL, 0x07, 0);
 +      }
 +
 +      /* For ATI SB450/600/700/800/900 and AMD Hudson azalia HD audio,
 +       * we need to enable snoop.
 +       */
 +      if (snoop_type == AZX_SNOOP_TYPE_ATI) {
 +              dev_dbg(chip->card->dev, "Setting ATI snoop: %d\n",
 +                      azx_snoop(chip));
 +              update_pci_byte(chip->pci,
 +                              ATI_SB450_HDAUDIO_MISC_CNTR2_ADDR, 0x07,
 +                              azx_snoop(chip) ? ATI_SB450_HDAUDIO_ENABLE_SNOOP : 0);
 +      }
 +
 +      /* For NVIDIA HDA, enable snoop */
 +      if (snoop_type == AZX_SNOOP_TYPE_NVIDIA) {
 +              dev_dbg(chip->card->dev, "Setting Nvidia snoop: %d\n",
 +                      azx_snoop(chip));
 +              update_pci_byte(chip->pci,
 +                              NVIDIA_HDA_TRANSREG_ADDR,
 +                              0x0f, NVIDIA_HDA_ENABLE_COHBITS);
 +              update_pci_byte(chip->pci,
 +                              NVIDIA_HDA_ISTRM_COH,
 +                              0x01, NVIDIA_HDA_ENABLE_COHBIT);
 +              update_pci_byte(chip->pci,
 +                              NVIDIA_HDA_OSTRM_COH,
 +                              0x01, NVIDIA_HDA_ENABLE_COHBIT);
 +      }
 +
 +      /* Enable SCH/PCH snoop if needed */
 +      if (snoop_type == AZX_SNOOP_TYPE_SCH) {
 +              unsigned short snoop;
 +              pci_read_config_word(chip->pci, INTEL_SCH_HDA_DEVC, &snoop);
 +              if ((!azx_snoop(chip) && !(snoop & INTEL_SCH_HDA_DEVC_NOSNOOP)) ||
 +                  (azx_snoop(chip) && (snoop & INTEL_SCH_HDA_DEVC_NOSNOOP))) {
 +                      snoop &= ~INTEL_SCH_HDA_DEVC_NOSNOOP;
 +                      if (!azx_snoop(chip))
 +                              snoop |= INTEL_SCH_HDA_DEVC_NOSNOOP;
 +                      pci_write_config_word(chip->pci, INTEL_SCH_HDA_DEVC, snoop);
 +                      pci_read_config_word(chip->pci,
 +                              INTEL_SCH_HDA_DEVC, &snoop);
 +              }
 +              dev_dbg(chip->card->dev, "SCH snoop: %s\n",
 +                      (snoop & INTEL_SCH_HDA_DEVC_NOSNOOP) ?
 +                      "Disabled" : "Enabled");
 +        }
 +}
 +
 +/*
 + * In BXT-P A0, HD-Audio DMA requests is later than expected,
 + * and makes an audio stream sensitive to system latencies when
 + * 24/32 bits are playing.
 + * Adjusting threshold of DMA fifo to force the DMA request
 + * sooner to improve latency tolerance at the expense of power.
 + */
 +static void bxt_reduce_dma_latency(struct azx *chip)
 +{
 +      u32 val;
 +
 +      val = azx_readl(chip, VS_EM4L);
 +      val &= (0x3 << 20);
 +      azx_writel(chip, VS_EM4L, val);
 +}
 +
 +/*
 + * ML_LCAP bits:
 + *  bit 0: 6 MHz Supported
 + *  bit 1: 12 MHz Supported
 + *  bit 2: 24 MHz Supported
 + *  bit 3: 48 MHz Supported
 + *  bit 4: 96 MHz Supported
 + *  bit 5: 192 MHz Supported
 + */
 +static int intel_get_lctl_scf(struct azx *chip)
 +{
 +      struct hdac_bus *bus = azx_bus(chip);
 +      static const int preferred_bits[] = { 2, 3, 1, 4, 5 };
 +      u32 val, t;
 +      int i;
 +
 +      val = readl(bus->mlcap + AZX_ML_BASE + AZX_REG_ML_LCAP);
 +
 +      for (i = 0; i < ARRAY_SIZE(preferred_bits); i++) {
 +              t = preferred_bits[i];
 +              if (val & (1 << t))
 +                      return t;
 +      }
 +
 +      dev_warn(chip->card->dev, "set audio clock frequency to 6MHz");
 +      return 0;
 +}
 +
 +static int intel_ml_lctl_set_power(struct azx *chip, int state)
 +{
 +      struct hdac_bus *bus = azx_bus(chip);
 +      u32 val;
 +      int timeout;
 +
 +      /*
 +       * Changes to LCTL.SCF are only needed for the first multi-link dealing
 +       * with external codecs
 +       */
 +      val = readl(bus->mlcap + AZX_ML_BASE + AZX_REG_ML_LCTL);
 +      val &= ~AZX_ML_LCTL_SPA;
 +      val |= state << AZX_ML_LCTL_SPA_SHIFT;
 +      writel(val, bus->mlcap + AZX_ML_BASE + AZX_REG_ML_LCTL);
 +      /* wait for CPA */
 +      timeout = 50;
 +      while (timeout) {
 +              if (((readl(bus->mlcap + AZX_ML_BASE + AZX_REG_ML_LCTL)) &
 +                  AZX_ML_LCTL_CPA) == (state << AZX_ML_LCTL_CPA_SHIFT))
 +                      return 0;
 +              timeout--;
 +              udelay(10);
 +      }
 +
 +      return -1;
 +}
 +
 +static void intel_init_lctl(struct azx *chip)
 +{
 +      struct hdac_bus *bus = azx_bus(chip);
 +      u32 val;
 +      int ret;
 +
 +      /* 0. check lctl register value is correct or not */
 +      val = readl(bus->mlcap + AZX_ML_BASE + AZX_REG_ML_LCTL);
 +      /* only perform additional configurations if the SCF is initially based on 6MHz */
 +      if ((val & AZX_ML_LCTL_SCF) != 0)
 +              return;
 +
 +      /*
 +       * Before operating on SPA, CPA must match SPA.
 +       * Any deviation may result in undefined behavior.
 +       */
 +      if (((val & AZX_ML_LCTL_SPA) >> AZX_ML_LCTL_SPA_SHIFT) !=
 +              ((val & AZX_ML_LCTL_CPA) >> AZX_ML_LCTL_CPA_SHIFT))
 +              return;
 +
 +      /* 1. turn link down: set SPA to 0 and wait CPA to 0 */
 +      ret = intel_ml_lctl_set_power(chip, 0);
 +      udelay(100);
 +      if (ret)
 +              goto set_spa;
 +
 +      /* 2. update SCF to select an audio clock different from 6MHz */
 +      val &= ~AZX_ML_LCTL_SCF;
 +      val |= intel_get_lctl_scf(chip);
 +      writel(val, bus->mlcap + AZX_ML_BASE + AZX_REG_ML_LCTL);
 +
 +set_spa:
 +      /* 4. turn link up: set SPA to 1 and wait CPA to 1 */
 +      intel_ml_lctl_set_power(chip, 1);
 +      udelay(100);
 +}
 +
 +static void hda_intel_init_chip(struct azx *chip, bool full_reset)
 +{
 +      struct hdac_bus *bus = azx_bus(chip);
 +      struct pci_dev *pci = chip->pci;
 +      u32 val;
 +
 +      snd_hdac_set_codec_wakeup(bus, true);
 +      if (chip->driver_type == AZX_DRIVER_SKL) {
 +              pci_read_config_dword(pci, INTEL_HDA_CGCTL, &val);
 +              val = val & ~INTEL_HDA_CGCTL_MISCBDCGE;
 +              pci_write_config_dword(pci, INTEL_HDA_CGCTL, val);
 +      }
 +      azx_init_chip(chip, full_reset);
 +      if (chip->driver_type == AZX_DRIVER_SKL) {
 +              pci_read_config_dword(pci, INTEL_HDA_CGCTL, &val);
 +              val = val | INTEL_HDA_CGCTL_MISCBDCGE;
 +              pci_write_config_dword(pci, INTEL_HDA_CGCTL, val);
 +      }
 +
 +      snd_hdac_set_codec_wakeup(bus, false);
 +
 +      /* reduce dma latency to avoid noise */
 +      if (HDA_CONTROLLER_IS_APL(pci))
 +              bxt_reduce_dma_latency(chip);
 +
 +      if (bus->mlcap != NULL)
 +              intel_init_lctl(chip);
 +}
 +
 +/* calculate runtime delay from LPIB */
 +static int azx_get_delay_from_lpib(struct azx *chip, struct azx_dev *azx_dev,
 +                                 unsigned int pos)
 +{
 +      struct snd_pcm_substream *substream = azx_dev->core.substream;
 +      int stream = substream->stream;
 +      unsigned int lpib_pos = azx_get_pos_lpib(chip, azx_dev);
 +      int delay;
 +
 +      if (stream == SNDRV_PCM_STREAM_PLAYBACK)
 +              delay = pos - lpib_pos;
 +      else
 +              delay = lpib_pos - pos;
 +      if (delay < 0) {
 +              if (delay >= azx_dev->core.delay_negative_threshold)
 +                      delay = 0;
 +              else
 +                      delay += azx_dev->core.bufsize;
 +      }
 +
 +      if (delay >= azx_dev->core.period_bytes) {
 +              dev_info(chip->card->dev,
 +                       "Unstable LPIB (%d >= %d); disabling LPIB delay counting\n",
 +                       delay, azx_dev->core.period_bytes);
 +              delay = 0;
 +              chip->driver_caps &= ~AZX_DCAPS_COUNT_LPIB_DELAY;
 +              chip->get_delay[stream] = NULL;
 +      }
 +
 +      return bytes_to_frames(substream->runtime, delay);
 +}
 +
 +static int azx_position_ok(struct azx *chip, struct azx_dev *azx_dev);
 +
 +/* called from IRQ */
 +static int azx_position_check(struct azx *chip, struct azx_dev *azx_dev)
 +{
 +      struct hda_intel *hda = container_of(chip, struct hda_intel, chip);
 +      int ok;
 +
 +      ok = azx_position_ok(chip, azx_dev);
 +      if (ok == 1) {
 +              azx_dev->irq_pending = 0;
 +              return ok;
 +      } else if (ok == 0) {
 +              /* bogus IRQ, process it later */
 +              azx_dev->irq_pending = 1;
 +              schedule_work(&hda->irq_pending_work);
 +      }
 +      return 0;
 +}
 +
 +#define display_power(chip, enable) \
 +      snd_hdac_display_power(azx_bus(chip), HDA_CODEC_IDX_CONTROLLER, enable)
 +
 +/*
 + * Check whether the current DMA position is acceptable for updating
 + * periods.  Returns non-zero if it's OK.
 + *
 + * Many HD-audio controllers appear pretty inaccurate about
 + * the update-IRQ timing.  The IRQ is issued before actually the
 + * data is processed.  So, we need to process it afterwords in a
 + * workqueue.
 + *
 + * Returns 1 if OK to proceed, 0 for delay handling, -1 for skipping update
 + */
 +static int azx_position_ok(struct azx *chip, struct azx_dev *azx_dev)
 +{
 +      struct snd_pcm_substream *substream = azx_dev->core.substream;
 +      struct snd_pcm_runtime *runtime = substream->runtime;
 +      int stream = substream->stream;
 +      u32 wallclk;
 +      unsigned int pos;
 +      snd_pcm_uframes_t hwptr, target;
 +
 +      /*
 +       * The value of the WALLCLK register is always 0
 +       * on the Loongson controller, so we return directly.
 +       */
 +      if (chip->driver_type == AZX_DRIVER_LOONGSON)
 +              return 1;
 +
 +      wallclk = azx_readl(chip, WALLCLK) - azx_dev->core.start_wallclk;
 +      if (wallclk < (azx_dev->core.period_wallclk * 2) / 3)
 +              return -1;      /* bogus (too early) interrupt */
 +
 +      if (chip->get_position[stream])
 +              pos = chip->get_position[stream](chip, azx_dev);
 +      else { /* use the position buffer as default */
 +              pos = azx_get_pos_posbuf(chip, azx_dev);
 +              if (!pos || pos == (u32)-1) {
 +                      dev_info(chip->card->dev,
 +                               "Invalid position buffer, using LPIB read method instead.\n");
 +                      chip->get_position[stream] = azx_get_pos_lpib;
 +                      if (chip->get_position[0] == azx_get_pos_lpib &&
 +                          chip->get_position[1] == azx_get_pos_lpib)
 +                              azx_bus(chip)->use_posbuf = false;
 +                      pos = azx_get_pos_lpib(chip, azx_dev);
 +                      chip->get_delay[stream] = NULL;
 +              } else {
 +                      chip->get_position[stream] = azx_get_pos_posbuf;
 +                      if (chip->driver_caps & AZX_DCAPS_COUNT_LPIB_DELAY)
 +                              chip->get_delay[stream] = azx_get_delay_from_lpib;
 +              }
 +      }
 +
 +      if (pos >= azx_dev->core.bufsize)
 +              pos = 0;
 +
 +      if (WARN_ONCE(!azx_dev->core.period_bytes,
 +                    "hda-intel: zero azx_dev->period_bytes"))
 +              return -1; /* this shouldn't happen! */
 +      if (wallclk < (azx_dev->core.period_wallclk * 5) / 4 &&
 +          pos % azx_dev->core.period_bytes > azx_dev->core.period_bytes / 2)
 +              /* NG - it's below the first next period boundary */
 +              return chip->bdl_pos_adj ? 0 : -1;
 +      azx_dev->core.start_wallclk += wallclk;
 +
 +      if (azx_dev->core.no_period_wakeup)
 +              return 1; /* OK, no need to check period boundary */
 +
 +      if (runtime->hw_ptr_base != runtime->hw_ptr_interrupt)
 +              return 1; /* OK, already in hwptr updating process */
 +
 +      /* check whether the period gets really elapsed */
 +      pos = bytes_to_frames(runtime, pos);
 +      hwptr = runtime->hw_ptr_base + pos;
 +      if (hwptr < runtime->status->hw_ptr)
 +              hwptr += runtime->buffer_size;
 +      target = runtime->hw_ptr_interrupt + runtime->period_size;
 +      if (hwptr < target) {
 +              /* too early wakeup, process it later */
 +              return chip->bdl_pos_adj ? 0 : -1;
 +      }
 +
 +      return 1; /* OK, it's fine */
 +}
 +
 +/*
 + * The work for pending PCM period updates.
 + */
 +static void azx_irq_pending_work(struct work_struct *work)
 +{
 +      struct hda_intel *hda = container_of(work, struct hda_intel, irq_pending_work);
 +      struct azx *chip = &hda->chip;
 +      struct hdac_bus *bus = azx_bus(chip);
 +      struct hdac_stream *s;
 +      int pending, ok;
 +
 +      if (!hda->irq_pending_warned) {
 +              dev_info(chip->card->dev,
 +                       "IRQ timing workaround is activated for card #%d. Suggest a bigger bdl_pos_adj.\n",
 +                       chip->card->number);
 +              hda->irq_pending_warned = 1;
 +      }
 +
 +      for (;;) {
 +              pending = 0;
 +              spin_lock_irq(&bus->reg_lock);
 +              list_for_each_entry(s, &bus->stream_list, list) {
 +                      struct azx_dev *azx_dev = stream_to_azx_dev(s);
 +                      if (!azx_dev->irq_pending ||
 +                          !s->substream ||
 +                          !s->running)
 +                              continue;
 +                      ok = azx_position_ok(chip, azx_dev);
 +                      if (ok > 0) {
 +                              azx_dev->irq_pending = 0;
 +                              spin_unlock(&bus->reg_lock);
 +                              snd_pcm_period_elapsed(s->substream);
 +                              spin_lock(&bus->reg_lock);
 +                      } else if (ok < 0) {
 +                              pending = 0;    /* too early */
 +                      } else
 +                              pending++;
 +              }
 +              spin_unlock_irq(&bus->reg_lock);
 +              if (!pending)
 +                      return;
 +              msleep(1);
 +      }
 +}
 +
 +/* clear irq_pending flags and assure no on-going workq */
 +static void azx_clear_irq_pending(struct azx *chip)
 +{
 +      struct hdac_bus *bus = azx_bus(chip);
 +      struct hdac_stream *s;
 +
 +      spin_lock_irq(&bus->reg_lock);
 +      list_for_each_entry(s, &bus->stream_list, list) {
 +              struct azx_dev *azx_dev = stream_to_azx_dev(s);
 +              azx_dev->irq_pending = 0;
 +      }
 +      spin_unlock_irq(&bus->reg_lock);
 +}
 +
 +static int azx_acquire_irq(struct azx *chip, int do_disconnect)
 +{
 +      struct hdac_bus *bus = azx_bus(chip);
 +      int ret;
 +
 +      if (!chip->msi || pci_alloc_irq_vectors(chip->pci, 1, 1, PCI_IRQ_MSI) < 0) {
 +              ret = pci_alloc_irq_vectors(chip->pci, 1, 1, PCI_IRQ_INTX);
 +              if (ret < 0)
 +                      return ret;
 +              chip->msi = 0;
 +      }
 +
 +      if (request_irq(chip->pci->irq, azx_interrupt,
 +                      chip->msi ? 0 : IRQF_SHARED,
 +                      chip->card->irq_descr, chip)) {
 +              dev_err(chip->card->dev,
 +                      "unable to grab IRQ %d, disabling device\n",
 +                      chip->pci->irq);
 +              if (do_disconnect)
 +                      snd_card_disconnect(chip->card);
 +              return -1;
 +      }
 +      bus->irq = chip->pci->irq;
 +      chip->card->sync_irq = bus->irq;
 +      return 0;
 +}
 +
 +/* get the current DMA position with correction on VIA chips */
 +static unsigned int azx_via_get_position(struct azx *chip,
 +                                       struct azx_dev *azx_dev)
 +{
 +      unsigned int link_pos, mini_pos, bound_pos;
 +      unsigned int mod_link_pos, mod_dma_pos, mod_mini_pos;
 +      unsigned int fifo_size;
 +
 +      link_pos = snd_hdac_stream_get_pos_lpib(azx_stream(azx_dev));
 +      if (azx_dev->core.substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
 +              /* Playback, no problem using link position */
 +              return link_pos;
 +      }
 +
 +      /* Capture */
 +      /* For new chipset,
 +       * use mod to get the DMA position just like old chipset
 +       */
 +      mod_dma_pos = le32_to_cpu(*azx_dev->core.posbuf);
 +      mod_dma_pos %= azx_dev->core.period_bytes;
 +
 +      fifo_size = azx_stream(azx_dev)->fifo_size;
 +
 +      if (azx_dev->insufficient) {
 +              /* Link position never gather than FIFO size */
 +              if (link_pos <= fifo_size)
 +                      return 0;
 +
 +              azx_dev->insufficient = 0;
 +      }
 +
 +      if (link_pos <= fifo_size)
 +              mini_pos = azx_dev->core.bufsize + link_pos - fifo_size;
 +      else
 +              mini_pos = link_pos - fifo_size;
 +
 +      /* Find nearest previous boudary */
 +      mod_mini_pos = mini_pos % azx_dev->core.period_bytes;
 +      mod_link_pos = link_pos % azx_dev->core.period_bytes;
 +      if (mod_link_pos >= fifo_size)
 +              bound_pos = link_pos - mod_link_pos;
 +      else if (mod_dma_pos >= mod_mini_pos)
 +              bound_pos = mini_pos - mod_mini_pos;
 +      else {
 +              bound_pos = mini_pos - mod_mini_pos + azx_dev->core.period_bytes;
 +              if (bound_pos >= azx_dev->core.bufsize)
 +                      bound_pos = 0;
 +      }
 +
 +      /* Calculate real DMA position we want */
 +      return bound_pos + mod_dma_pos;
 +}
 +
 +#define AMD_FIFO_SIZE 32
 +
 +/* get the current DMA position with FIFO size correction */
 +static unsigned int azx_get_pos_fifo(struct azx *chip, struct azx_dev *azx_dev)
 +{
 +      struct snd_pcm_substream *substream = azx_dev->core.substream;
 +      struct snd_pcm_runtime *runtime = substream->runtime;
 +      unsigned int pos, delay;
 +
 +      pos = snd_hdac_stream_get_pos_lpib(azx_stream(azx_dev));
 +      if (!runtime)
 +              return pos;
 +
 +      runtime->delay = AMD_FIFO_SIZE;
 +      delay = frames_to_bytes(runtime, AMD_FIFO_SIZE);
 +      if (azx_dev->insufficient) {
 +              if (pos < delay) {
 +                      delay = pos;
 +                      runtime->delay = bytes_to_frames(runtime, pos);
 +              } else {
 +                      azx_dev->insufficient = 0;
 +              }
 +      }
 +
 +      /* correct the DMA position for capture stream */
 +      if (substream->stream == SNDRV_PCM_STREAM_CAPTURE) {
 +              if (pos < delay)
 +                      pos += azx_dev->core.bufsize;
 +              pos -= delay;
 +      }
 +
 +      return pos;
 +}
 +
 +static int azx_get_delay_from_fifo(struct azx *chip, struct azx_dev *azx_dev,
 +                                 unsigned int pos)
 +{
 +      struct snd_pcm_substream *substream = azx_dev->core.substream;
 +
 +      /* just read back the calculated value in the above */
 +      return substream->runtime->delay;
 +}
 +
 +static void __azx_shutdown_chip(struct azx *chip, bool skip_link_reset)
 +{
 +      azx_stop_chip(chip);
 +      if (!skip_link_reset)
 +              azx_enter_link_reset(chip);
 +      azx_clear_irq_pending(chip);
 +      display_power(chip, false);
 +}
 +
 +static DEFINE_MUTEX(card_list_lock);
 +static LIST_HEAD(card_list);
 +
 +static void azx_shutdown_chip(struct azx *chip)
 +{
 +      __azx_shutdown_chip(chip, false);
 +}
 +
 +static void azx_add_card_list(struct azx *chip)
 +{
 +      struct hda_intel *hda = container_of(chip, struct hda_intel, chip);
 +      mutex_lock(&card_list_lock);
 +      list_add(&hda->list, &card_list);
 +      mutex_unlock(&card_list_lock);
 +}
 +
 +static void azx_del_card_list(struct azx *chip)
 +{
 +      struct hda_intel *hda = container_of(chip, struct hda_intel, chip);
 +      mutex_lock(&card_list_lock);
 +      list_del_init(&hda->list);
 +      mutex_unlock(&card_list_lock);
 +}
 +
 +/* trigger power-save check at writing parameter */
 +static int __maybe_unused param_set_xint(const char *val, const struct kernel_param *kp)
 +{
 +      struct hda_intel *hda;
 +      struct azx *chip;
 +      int prev = power_save;
 +      int ret = param_set_int(val, kp);
 +
 +      if (ret || prev == power_save)
 +              return ret;
 +
 +      if (pm_blacklist > 0)
 +              return 0;
 +
 +      mutex_lock(&card_list_lock);
 +      list_for_each_entry(hda, &card_list, list) {
 +              chip = &hda->chip;
 +              if (!hda->probe_continued || chip->disabled ||
 +                  hda->runtime_pm_disabled)
 +                      continue;
 +              snd_hda_set_power_save(&chip->bus, power_save * 1000);
 +      }
 +      mutex_unlock(&card_list_lock);
 +      return 0;
 +}
 +
 +/*
 + * power management
 + */
 +static bool azx_is_pm_ready(struct snd_card *card)
 +{
 +      struct azx *chip;
 +      struct hda_intel *hda;
 +
 +      if (!card)
 +              return false;
 +      chip = card->private_data;
 +      hda = container_of(chip, struct hda_intel, chip);
 +      if (chip->disabled || hda->init_failed || !chip->running)
 +              return false;
 +      return true;
 +}
 +
 +static void __azx_runtime_resume(struct azx *chip)
 +{
 +      struct hda_intel *hda = container_of(chip, struct hda_intel, chip);
 +      struct hdac_bus *bus = azx_bus(chip);
 +      struct hda_codec *codec;
 +      int status;
 +
 +      display_power(chip, true);
 +      if (hda->need_i915_power)
 +              snd_hdac_i915_set_bclk(bus);
 +
 +      /* Read STATESTS before controller reset */
 +      status = azx_readw(chip, STATESTS);
 +
 +      azx_init_pci(chip);
 +      hda_intel_init_chip(chip, true);
 +
 +      /* Avoid codec resume if runtime resume is for system suspend */
 +      if (!chip->pm_prepared) {
 +              list_for_each_codec(codec, &chip->bus) {
 +                      if (codec->relaxed_resume)
 +                              continue;
 +
 +                      if (codec->forced_resume || (status & (1 << codec->addr)))
 +                              pm_request_resume(hda_codec_dev(codec));
 +              }
 +      }
 +
 +      /* power down again for link-controlled chips */
 +      if (!hda->need_i915_power)
 +              display_power(chip, false);
 +}
 +
 +static int azx_prepare(struct device *dev)
 +{
 +      struct snd_card *card = dev_get_drvdata(dev);
 +      struct azx *chip;
 +
 +      if (!azx_is_pm_ready(card))
 +              return 0;
 +
 +      chip = card->private_data;
 +      chip->pm_prepared = 1;
 +      snd_power_change_state(card, SNDRV_CTL_POWER_D3hot);
 +
 +      flush_work(&azx_bus(chip)->unsol_work);
 +
 +      /* HDA controller always requires different WAKEEN for runtime suspend
 +       * and system suspend, so don't use direct-complete here.
 +       */
 +      return 0;
 +}
 +
 +static void azx_complete(struct device *dev)
 +{
 +      struct snd_card *card = dev_get_drvdata(dev);
 +      struct azx *chip;
 +
 +      if (!azx_is_pm_ready(card))
 +              return;
 +
 +      chip = card->private_data;
 +      snd_power_change_state(card, SNDRV_CTL_POWER_D0);
 +      chip->pm_prepared = 0;
 +}
 +
 +static int azx_suspend(struct device *dev)
 +{
 +      struct snd_card *card = dev_get_drvdata(dev);
 +      struct azx *chip;
 +
 +      if (!azx_is_pm_ready(card))
 +              return 0;
 +
 +      chip = card->private_data;
 +      azx_shutdown_chip(chip);
 +
 +      trace_azx_suspend(chip);
 +      return 0;
 +}
 +
 +static int azx_resume(struct device *dev)
 +{
 +      struct snd_card *card = dev_get_drvdata(dev);
 +      struct azx *chip;
 +
 +      if (!azx_is_pm_ready(card))
 +              return 0;
 +
 +      chip = card->private_data;
 +
 +      __azx_runtime_resume(chip);
 +
 +      trace_azx_resume(chip);
 +      return 0;
 +}
 +
 +/* put codec down to D3 at hibernation for Intel SKL+;
 + * otherwise BIOS may still access the codec and screw up the driver
 + */
 +static int azx_freeze_noirq(struct device *dev)
 +{
 +      struct snd_card *card = dev_get_drvdata(dev);
 +      struct azx *chip = card->private_data;
 +      struct pci_dev *pci = to_pci_dev(dev);
 +
 +      if (!azx_is_pm_ready(card))
 +              return 0;
 +      if (chip->driver_type == AZX_DRIVER_SKL)
 +              pci_set_power_state(pci, PCI_D3hot);
 +
 +      return 0;
 +}
 +
 +static int azx_thaw_noirq(struct device *dev)
 +{
 +      struct snd_card *card = dev_get_drvdata(dev);
 +      struct azx *chip = card->private_data;
 +      struct pci_dev *pci = to_pci_dev(dev);
 +
 +      if (!azx_is_pm_ready(card))
 +              return 0;
 +      if (chip->driver_type == AZX_DRIVER_SKL)
 +              pci_set_power_state(pci, PCI_D0);
 +
 +      return 0;
 +}
 +
 +static int azx_runtime_suspend(struct device *dev)
 +{
 +      struct snd_card *card = dev_get_drvdata(dev);
 +      struct azx *chip;
 +
 +      if (!azx_is_pm_ready(card))
 +              return 0;
 +      chip = card->private_data;
 +
 +      /* enable controller wake up event */
 +      azx_writew(chip, WAKEEN, azx_readw(chip, WAKEEN) | STATESTS_INT_MASK);
 +
 +      azx_shutdown_chip(chip);
 +      trace_azx_runtime_suspend(chip);
 +      return 0;
 +}
 +
 +static int azx_runtime_resume(struct device *dev)
 +{
 +      struct snd_card *card = dev_get_drvdata(dev);
 +      struct azx *chip;
 +
 +      if (!azx_is_pm_ready(card))
 +              return 0;
 +      chip = card->private_data;
 +      __azx_runtime_resume(chip);
 +
 +      /* disable controller Wake Up event*/
 +      azx_writew(chip, WAKEEN, azx_readw(chip, WAKEEN) & ~STATESTS_INT_MASK);
 +
 +      trace_azx_runtime_resume(chip);
 +      return 0;
 +}
 +
 +static int azx_runtime_idle(struct device *dev)
 +{
 +      struct snd_card *card = dev_get_drvdata(dev);
 +      struct azx *chip;
 +      struct hda_intel *hda;
 +
 +      if (!card)
 +              return 0;
 +
 +      chip = card->private_data;
 +      hda = container_of(chip, struct hda_intel, chip);
 +      if (chip->disabled || hda->init_failed)
 +              return 0;
 +
 +      if (!power_save_controller || !azx_has_pm_runtime(chip) ||
 +          azx_bus(chip)->codec_powered || !chip->running)
 +              return -EBUSY;
 +
 +      /* ELD notification gets broken when HD-audio bus is off */
 +      if (needs_eld_notify_link(chip))
 +              return -EBUSY;
 +
 +      return 0;
 +}
 +
 +static const struct dev_pm_ops azx_pm = {
 +      SYSTEM_SLEEP_PM_OPS(azx_suspend, azx_resume)
 +      .prepare = pm_sleep_ptr(azx_prepare),
 +      .complete = pm_sleep_ptr(azx_complete),
 +      .freeze_noirq = pm_sleep_ptr(azx_freeze_noirq),
 +      .thaw_noirq = pm_sleep_ptr(azx_thaw_noirq),
 +      RUNTIME_PM_OPS(azx_runtime_suspend, azx_runtime_resume, azx_runtime_idle)
 +};
 +
 +
 +static int azx_probe_continue(struct azx *chip);
 +
 +#ifdef SUPPORT_VGA_SWITCHEROO
 +static struct pci_dev *get_bound_vga(struct pci_dev *pci);
 +
 +static void azx_vs_set_state(struct pci_dev *pci,
 +                           enum vga_switcheroo_state state)
 +{
 +      struct snd_card *card = pci_get_drvdata(pci);
 +      struct azx *chip = card->private_data;
 +      struct hda_intel *hda = container_of(chip, struct hda_intel, chip);
 +      struct hda_codec *codec;
 +      bool disabled;
 +
 +      wait_for_completion(&hda->probe_wait);
 +      if (hda->init_failed)
 +              return;
 +
 +      disabled = (state == VGA_SWITCHEROO_OFF);
 +      if (chip->disabled == disabled)
 +              return;
 +
 +      if (!hda->probe_continued) {
 +              chip->disabled = disabled;
 +              if (!disabled) {
 +                      dev_info(chip->card->dev,
 +                               "Start delayed initialization\n");
 +                      if (azx_probe_continue(chip) < 0)
 +                              dev_err(chip->card->dev, "initialization error\n");
 +              }
 +      } else {
 +              dev_info(chip->card->dev, "%s via vga_switcheroo\n",
 +                       disabled ? "Disabling" : "Enabling");
 +              if (disabled) {
 +                      list_for_each_codec(codec, &chip->bus) {
 +                              pm_runtime_suspend(hda_codec_dev(codec));
 +                              pm_runtime_disable(hda_codec_dev(codec));
 +                      }
 +                      pm_runtime_suspend(card->dev);
 +                      pm_runtime_disable(card->dev);
 +                      /* when we get suspended by vga_switcheroo we end up in D3cold,
 +                       * however we have no ACPI handle, so pci/acpi can't put us there,
 +                       * put ourselves there */
 +                      pci->current_state = PCI_D3cold;
 +                      chip->disabled = true;
 +                      if (snd_hda_lock_devices(&chip->bus))
 +                              dev_warn(chip->card->dev,
 +                                       "Cannot lock devices!\n");
 +              } else {
 +                      snd_hda_unlock_devices(&chip->bus);
 +                      chip->disabled = false;
 +                      pm_runtime_enable(card->dev);
 +                      list_for_each_codec(codec, &chip->bus) {
 +                              pm_runtime_enable(hda_codec_dev(codec));
 +                              pm_runtime_resume(hda_codec_dev(codec));
 +                      }
 +              }
 +      }
 +}
 +
 +static bool azx_vs_can_switch(struct pci_dev *pci)
 +{
 +      struct snd_card *card = pci_get_drvdata(pci);
 +      struct azx *chip = card->private_data;
 +      struct hda_intel *hda = container_of(chip, struct hda_intel, chip);
 +
 +      wait_for_completion(&hda->probe_wait);
 +      if (hda->init_failed)
 +              return false;
 +      if (chip->disabled || !hda->probe_continued)
 +              return true;
 +      if (snd_hda_lock_devices(&chip->bus))
 +              return false;
 +      snd_hda_unlock_devices(&chip->bus);
 +      return true;
 +}
 +
 +/*
 + * The discrete GPU cannot power down unless the HDA controller runtime
 + * suspends, so activate runtime PM on codecs even if power_save == 0.
 + */
 +static void setup_vga_switcheroo_runtime_pm(struct azx *chip)
 +{
 +      struct hda_intel *hda = container_of(chip, struct hda_intel, chip);
 +      struct hda_codec *codec;
 +
 +      if (hda->use_vga_switcheroo && !needs_eld_notify_link(chip)) {
 +              list_for_each_codec(codec, &chip->bus)
 +                      codec->auto_runtime_pm = 1;
 +              /* reset the power save setup */
 +              if (chip->running)
 +                      set_default_power_save(chip);
 +      }
 +}
 +
 +static void azx_vs_gpu_bound(struct pci_dev *pci,
 +                           enum vga_switcheroo_client_id client_id)
 +{
 +      struct snd_card *card = pci_get_drvdata(pci);
 +      struct azx *chip = card->private_data;
 +
 +      if (client_id == VGA_SWITCHEROO_DIS)
 +              chip->bus.keep_power = 0;
 +      setup_vga_switcheroo_runtime_pm(chip);
 +}
 +
 +static void init_vga_switcheroo(struct azx *chip)
 +{
 +      struct hda_intel *hda = container_of(chip, struct hda_intel, chip);
 +      struct pci_dev *p = get_bound_vga(chip->pci);
 +      struct pci_dev *parent;
 +      if (p) {
 +              dev_info(chip->card->dev,
 +                       "Handle vga_switcheroo audio client\n");
 +              hda->use_vga_switcheroo = 1;
 +
 +              /* cleared in either gpu_bound op or codec probe, or when its
 +               * upstream port has _PR3 (i.e. dGPU).
 +               */
 +              parent = pci_upstream_bridge(p);
 +              chip->bus.keep_power = parent ? !pci_pr3_present(parent) : 1;
 +              chip->driver_caps |= AZX_DCAPS_PM_RUNTIME;
 +              pci_dev_put(p);
 +      }
 +}
 +
 +static const struct vga_switcheroo_client_ops azx_vs_ops = {
 +      .set_gpu_state = azx_vs_set_state,
 +      .can_switch = azx_vs_can_switch,
 +      .gpu_bound = azx_vs_gpu_bound,
 +};
 +
 +static int register_vga_switcheroo(struct azx *chip)
 +{
 +      struct hda_intel *hda = container_of(chip, struct hda_intel, chip);
 +      struct pci_dev *p;
 +      int err;
 +
 +      if (!hda->use_vga_switcheroo)
 +              return 0;
 +
 +      p = get_bound_vga(chip->pci);
 +      err = vga_switcheroo_register_audio_client(chip->pci, &azx_vs_ops, p);
 +      pci_dev_put(p);
 +
 +      if (err < 0)
 +              return err;
 +      hda->vga_switcheroo_registered = 1;
 +
 +      return 0;
 +}
 +#else
 +#define init_vga_switcheroo(chip)             /* NOP */
 +#define register_vga_switcheroo(chip)         0
 +#define check_hdmi_disabled(pci)      false
 +#define setup_vga_switcheroo_runtime_pm(chip) /* NOP */
 +#endif /* SUPPORT_VGA_SWITCHER */
 +
 +/*
 + * destructor
 + */
 +static void azx_free(struct azx *chip)
 +{
 +      struct pci_dev *pci = chip->pci;
 +      struct hda_intel *hda = container_of(chip, struct hda_intel, chip);
 +      struct hdac_bus *bus = azx_bus(chip);
 +
 +      if (hda->freed)
 +              return;
 +
 +      if (azx_has_pm_runtime(chip) && chip->running) {
 +              pm_runtime_get_noresume(&pci->dev);
 +              pm_runtime_forbid(&pci->dev);
 +              pm_runtime_dont_use_autosuspend(&pci->dev);
 +      }
 +
 +      chip->running = 0;
 +
 +      azx_del_card_list(chip);
 +
 +      hda->init_failed = 1; /* to be sure */
 +      complete_all(&hda->probe_wait);
 +
 +      if (use_vga_switcheroo(hda)) {
 +              if (chip->disabled && hda->probe_continued)
 +                      snd_hda_unlock_devices(&chip->bus);
 +              if (hda->vga_switcheroo_registered) {
 +                      vga_switcheroo_unregister_client(chip->pci);
 +
 +                      /* Some GPUs don't have sound, and azx_first_init fails,
 +                       * leaving the device probed but non-functional. As long
 +                       * as it's probed, the PCI subsystem keeps its runtime
 +                       * PM status as active. Force it to suspended (as we
 +                       * actually stop the chip) to allow GPU to suspend via
 +                       * vga_switcheroo, and print a warning.
 +                       */
 +                      dev_warn(&pci->dev, "GPU sound probed, but not operational: please add a quirk to driver_denylist\n");
 +                      pm_runtime_disable(&pci->dev);
 +                      pm_runtime_set_suspended(&pci->dev);
 +                      pm_runtime_enable(&pci->dev);
 +              }
 +      }
 +
 +      if (bus->chip_init) {
 +              azx_clear_irq_pending(chip);
 +              azx_stop_all_streams(chip);
 +              azx_stop_chip(chip);
 +      }
 +
 +      if (bus->irq >= 0)
 +              free_irq(bus->irq, (void*)chip);
 +
 +      azx_free_stream_pages(chip);
 +      azx_free_streams(chip);
 +      snd_hdac_bus_exit(bus);
 +
 +#ifdef CONFIG_SND_HDA_PATCH_LOADER
 +      release_firmware(chip->fw);
 +#endif
 +      display_power(chip, false);
 +
 +      if (chip->driver_caps & AZX_DCAPS_I915_COMPONENT)
 +              snd_hdac_i915_exit(bus);
 +
 +      hda->freed = 1;
 +}
 +
 +static int azx_dev_disconnect(struct snd_device *device)
 +{
 +      struct azx *chip = device->device_data;
 +      struct hdac_bus *bus = azx_bus(chip);
 +
 +      chip->bus.shutdown = 1;
 +      cancel_work_sync(&bus->unsol_work);
 +
 +      return 0;
 +}
 +
 +static int azx_dev_free(struct snd_device *device)
 +{
 +      azx_free(device->device_data);
 +      return 0;
 +}
 +
 +#ifdef SUPPORT_VGA_SWITCHEROO
 +#ifdef CONFIG_ACPI
 +/* ATPX is in the integrated GPU's namespace */
 +static bool atpx_present(void)
 +{
 +      struct pci_dev *pdev = NULL;
 +      acpi_handle dhandle, atpx_handle;
 +      acpi_status status;
 +
 +      while ((pdev = pci_get_base_class(PCI_BASE_CLASS_DISPLAY, pdev))) {
 +              if ((pdev->class != PCI_CLASS_DISPLAY_VGA << 8) &&
 +                  (pdev->class != PCI_CLASS_DISPLAY_OTHER << 8))
 +                      continue;
 +
 +              dhandle = ACPI_HANDLE(&pdev->dev);
 +              if (dhandle) {
 +                      status = acpi_get_handle(dhandle, "ATPX", &atpx_handle);
 +                      if (ACPI_SUCCESS(status)) {
 +                              pci_dev_put(pdev);
 +                              return true;
 +                      }
 +              }
 +      }
 +      return false;
 +}
 +#else
 +static bool atpx_present(void)
 +{
 +      return false;
 +}
 +#endif
 +
 +/*
 + * Check of disabled HDMI controller by vga_switcheroo
 + */
 +static struct pci_dev *get_bound_vga(struct pci_dev *pci)
 +{
 +      struct pci_dev *p;
 +
 +      /* check only discrete GPU */
 +      switch (pci->vendor) {
 +      case PCI_VENDOR_ID_ATI:
 +      case PCI_VENDOR_ID_AMD:
 +              if (pci->devfn == 1) {
 +                      p = pci_get_domain_bus_and_slot(pci_domain_nr(pci->bus),
 +                                                      pci->bus->number, 0);
 +                      if (p) {
 +                              /* ATPX is in the integrated GPU's ACPI namespace
 +                               * rather than the dGPU's namespace. However,
 +                               * the dGPU is the one who is involved in
 +                               * vgaswitcheroo.
 +                               */
-                               if ((p->class >> 16) == PCI_BASE_CLASS_DISPLAY)
++                              if (pci_is_display(p) &&
 +                                  (atpx_present() || apple_gmux_detect(NULL, NULL)))
 +                                      return p;
 +                              pci_dev_put(p);
 +                      }
 +              }
 +              break;
 +      case PCI_VENDOR_ID_NVIDIA:
 +              if (pci->devfn == 1) {
 +                      p = pci_get_domain_bus_and_slot(pci_domain_nr(pci->bus),
 +                                                      pci->bus->number, 0);
 +                      if (p) {
++                              if (pci_is_display(p))
 +                                      return p;
 +                              pci_dev_put(p);
 +                      }
 +              }
 +              break;
 +      }
 +      return NULL;
 +}
 +
 +static bool check_hdmi_disabled(struct pci_dev *pci)
 +{
 +      bool vga_inactive = false;
 +      struct pci_dev *p = get_bound_vga(pci);
 +
 +      if (p) {
 +              if (vga_switcheroo_get_client_state(p) == VGA_SWITCHEROO_OFF)
 +                      vga_inactive = true;
 +              pci_dev_put(p);
 +      }
 +      return vga_inactive;
 +}
 +#endif /* SUPPORT_VGA_SWITCHEROO */
 +
 +/*
 + * allow/deny-listing for position_fix
 + */
 +static const struct snd_pci_quirk position_fix_list[] = {
 +      SND_PCI_QUIRK(0x1028, 0x01cc, "Dell D820", POS_FIX_LPIB),
 +      SND_PCI_QUIRK(0x1028, 0x01de, "Dell Precision 390", POS_FIX_LPIB),
 +      SND_PCI_QUIRK(0x103c, 0x306d, "HP dv3", POS_FIX_LPIB),
 +      SND_PCI_QUIRK(0x1043, 0x813d, "ASUS P5AD2", POS_FIX_LPIB),
 +      SND_PCI_QUIRK(0x1043, 0x81b3, "ASUS", POS_FIX_LPIB),
 +      SND_PCI_QUIRK(0x1043, 0x81e7, "ASUS M2V", POS_FIX_LPIB),
 +      SND_PCI_QUIRK(0x104d, 0x9069, "Sony VPCS11V9E", POS_FIX_LPIB),
 +      SND_PCI_QUIRK(0x10de, 0xcb89, "Macbook Pro 7,1", POS_FIX_LPIB),
 +      SND_PCI_QUIRK(0x1297, 0x3166, "Shuttle", POS_FIX_LPIB),
 +      SND_PCI_QUIRK(0x1458, 0xa022, "ga-ma770-ud3", POS_FIX_LPIB),
 +      SND_PCI_QUIRK(0x1462, 0x1002, "MSI Wind U115", POS_FIX_LPIB),
 +      SND_PCI_QUIRK(0x1565, 0x8218, "Biostar Microtech", POS_FIX_LPIB),
 +      SND_PCI_QUIRK(0x1849, 0x0888, "775Dual-VSTA", POS_FIX_LPIB),
 +      SND_PCI_QUIRK(0x8086, 0x2503, "DG965OT AAD63733-203", POS_FIX_LPIB),
 +      {}
 +};
 +
 +static int check_position_fix(struct azx *chip, int fix)
 +{
 +      const struct snd_pci_quirk *q;
 +
 +      switch (fix) {
 +      case POS_FIX_AUTO:
 +      case POS_FIX_LPIB:
 +      case POS_FIX_POSBUF:
 +      case POS_FIX_VIACOMBO:
 +      case POS_FIX_COMBO:
 +      case POS_FIX_SKL:
 +      case POS_FIX_FIFO:
 +              return fix;
 +      }
 +
 +      q = snd_pci_quirk_lookup(chip->pci, position_fix_list);
 +      if (q) {
 +              dev_info(chip->card->dev,
 +                       "position_fix set to %d for device %04x:%04x\n",
 +                       q->value, q->subvendor, q->subdevice);
 +              return q->value;
 +      }
 +
 +      /* Check VIA/ATI HD Audio Controller exist */
 +      if (chip->driver_type == AZX_DRIVER_VIA) {
 +              dev_dbg(chip->card->dev, "Using VIACOMBO position fix\n");
 +              return POS_FIX_VIACOMBO;
 +      }
 +      if (chip->driver_caps & AZX_DCAPS_AMD_WORKAROUND) {
 +              dev_dbg(chip->card->dev, "Using FIFO position fix\n");
 +              return POS_FIX_FIFO;
 +      }
 +      if (chip->driver_caps & AZX_DCAPS_POSFIX_LPIB) {
 +              dev_dbg(chip->card->dev, "Using LPIB position fix\n");
 +              return POS_FIX_LPIB;
 +      }
 +      if (chip->driver_type == AZX_DRIVER_SKL) {
 +              dev_dbg(chip->card->dev, "Using SKL position fix\n");
 +              return POS_FIX_SKL;
 +      }
 +      return POS_FIX_AUTO;
 +}
 +
 +static void assign_position_fix(struct azx *chip, int fix)
 +{
 +      static const azx_get_pos_callback_t callbacks[] = {
 +              [POS_FIX_AUTO] = NULL,
 +              [POS_FIX_LPIB] = azx_get_pos_lpib,
 +              [POS_FIX_POSBUF] = azx_get_pos_posbuf,
 +              [POS_FIX_VIACOMBO] = azx_via_get_position,
 +              [POS_FIX_COMBO] = azx_get_pos_lpib,
 +              [POS_FIX_SKL] = azx_get_pos_posbuf,
 +              [POS_FIX_FIFO] = azx_get_pos_fifo,
 +      };
 +
 +      chip->get_position[0] = chip->get_position[1] = callbacks[fix];
 +
 +      /* combo mode uses LPIB only for playback */
 +      if (fix == POS_FIX_COMBO)
 +              chip->get_position[1] = NULL;
 +
 +      if ((fix == POS_FIX_POSBUF || fix == POS_FIX_SKL) &&
 +          (chip->driver_caps & AZX_DCAPS_COUNT_LPIB_DELAY)) {
 +              chip->get_delay[0] = chip->get_delay[1] =
 +                      azx_get_delay_from_lpib;
 +      }
 +
 +      if (fix == POS_FIX_FIFO)
 +              chip->get_delay[0] = chip->get_delay[1] =
 +                      azx_get_delay_from_fifo;
 +}
 +
 +/*
 + * deny-lists for probe_mask
 + */
 +static const struct snd_pci_quirk probe_mask_list[] = {
 +      /* Thinkpad often breaks the controller communication when accessing
 +       * to the non-working (or non-existing) modem codec slot.
 +       */
 +      SND_PCI_QUIRK(0x1014, 0x05b7, "Thinkpad Z60", 0x01),
 +      SND_PCI_QUIRK(0x17aa, 0x2010, "Thinkpad X/T/R60", 0x01),
 +      SND_PCI_QUIRK(0x17aa, 0x20ac, "Thinkpad X/T/R61", 0x01),
 +      /* broken BIOS */
 +      SND_PCI_QUIRK(0x1028, 0x20ac, "Dell Studio Desktop", 0x01),
 +      /* including bogus ALC268 in slot#2 that conflicts with ALC888 */
 +      SND_PCI_QUIRK(0x17c0, 0x4085, "Medion MD96630", 0x01),
 +      /* forced codec slots */
 +      SND_PCI_QUIRK(0x1043, 0x1262, "ASUS W5Fm", 0x103),
 +      SND_PCI_QUIRK(0x1046, 0x1262, "ASUS W5F", 0x103),
 +      SND_PCI_QUIRK(0x1558, 0x0351, "Schenker Dock 15", 0x105),
 +      /* WinFast VP200 H (Teradici) user reported broken communication */
 +      SND_PCI_QUIRK(0x3a21, 0x040d, "WinFast VP200 H", 0x101),
 +      {}
 +};
 +
 +#define AZX_FORCE_CODEC_MASK  0x100
 +
 +static void check_probe_mask(struct azx *chip, int dev)
 +{
 +      const struct snd_pci_quirk *q;
 +
 +      chip->codec_probe_mask = probe_mask[dev];
 +      if (chip->codec_probe_mask == -1) {
 +              q = snd_pci_quirk_lookup(chip->pci, probe_mask_list);
 +              if (q) {
 +                      dev_info(chip->card->dev,
 +                               "probe_mask set to 0x%x for device %04x:%04x\n",
 +                               q->value, q->subvendor, q->subdevice);
 +                      chip->codec_probe_mask = q->value;
 +              }
 +      }
 +
 +      /* check forced option */
 +      if (chip->codec_probe_mask != -1 &&
 +          (chip->codec_probe_mask & AZX_FORCE_CODEC_MASK)) {
 +              azx_bus(chip)->codec_mask = chip->codec_probe_mask & 0xff;
 +              dev_info(chip->card->dev, "codec_mask forced to 0x%x\n",
 +                       (int)azx_bus(chip)->codec_mask);
 +      }
 +}
 +
 +/*
 + * allow/deny-list for enable_msi
 + */
 +static const struct snd_pci_quirk msi_deny_list[] = {
 +      SND_PCI_QUIRK(0x103c, 0x2191, "HP", 0), /* AMD Hudson */
 +      SND_PCI_QUIRK(0x103c, 0x2192, "HP", 0), /* AMD Hudson */
 +      SND_PCI_QUIRK(0x103c, 0x21f7, "HP", 0), /* AMD Hudson */
 +      SND_PCI_QUIRK(0x103c, 0x21fa, "HP", 0), /* AMD Hudson */
 +      SND_PCI_QUIRK(0x1043, 0x81f2, "ASUS", 0), /* Athlon64 X2 + nvidia */
 +      SND_PCI_QUIRK(0x1043, 0x81f6, "ASUS", 0), /* nvidia */
 +      SND_PCI_QUIRK(0x1043, 0x822d, "ASUS", 0), /* Athlon64 X2 + nvidia MCP55 */
 +      SND_PCI_QUIRK(0x1179, 0xfb44, "Toshiba Satellite C870", 0), /* AMD Hudson */
 +      SND_PCI_QUIRK(0x1849, 0x0888, "ASRock", 0), /* Athlon64 X2 + nvidia */
 +      SND_PCI_QUIRK(0xa0a0, 0x0575, "Aopen MZ915-M", 0), /* ICH6 */
 +      {}
 +};
 +
 +static void check_msi(struct azx *chip)
 +{
 +      const struct snd_pci_quirk *q;
 +
 +      if (enable_msi >= 0) {
 +              chip->msi = !!enable_msi;
 +              return;
 +      }
 +      chip->msi = 1;  /* enable MSI as default */
 +      q = snd_pci_quirk_lookup(chip->pci, msi_deny_list);
 +      if (q) {
 +              dev_info(chip->card->dev,
 +                       "msi for device %04x:%04x set to %d\n",
 +                       q->subvendor, q->subdevice, q->value);
 +              chip->msi = q->value;
 +              return;
 +      }
 +
 +      /* NVidia chipsets seem to cause troubles with MSI */
 +      if (chip->driver_caps & AZX_DCAPS_NO_MSI) {
 +              dev_info(chip->card->dev, "Disabling MSI\n");
 +              chip->msi = 0;
 +      }
 +}
 +
 +/* check the snoop mode availability */
 +static void azx_check_snoop_available(struct azx *chip)
 +{
 +      int snoop = hda_snoop;
 +
 +      if (snoop >= 0) {
 +              dev_info(chip->card->dev, "Force to %s mode by module option\n",
 +                       snoop ? "snoop" : "non-snoop");
 +              chip->snoop = snoop;
 +              chip->uc_buffer = !snoop;
 +              return;
 +      }
 +
 +      snoop = true;
 +      if (azx_get_snoop_type(chip) == AZX_SNOOP_TYPE_NONE &&
 +          chip->driver_type == AZX_DRIVER_VIA) {
 +              /* force to non-snoop mode for a new VIA controller
 +               * when BIOS is set
 +               */
 +              u8 val;
 +              pci_read_config_byte(chip->pci, 0x42, &val);
 +              if (!(val & 0x80) && (chip->pci->revision == 0x30 ||
 +                                    chip->pci->revision == 0x20))
 +                      snoop = false;
 +      }
 +
 +      if (chip->driver_caps & AZX_DCAPS_SNOOP_OFF)
 +              snoop = false;
 +
 +      chip->snoop = snoop;
 +      if (!snoop) {
 +              dev_info(chip->card->dev, "Force to non-snoop mode\n");
 +              /* C-Media requires non-cached pages only for CORB/RIRB */
 +              if (chip->driver_type != AZX_DRIVER_CMEDIA)
 +                      chip->uc_buffer = true;
 +      }
 +}
 +
 +static void azx_probe_work(struct work_struct *work)
 +{
 +      struct hda_intel *hda = container_of(work, struct hda_intel, probe_work.work);
 +      azx_probe_continue(&hda->chip);
 +}
 +
 +static int default_bdl_pos_adj(struct azx *chip)
 +{
 +      /* some exceptions: Atoms seem problematic with value 1 */
 +      if (chip->pci->vendor == PCI_VENDOR_ID_INTEL) {
 +              switch (chip->pci->device) {
 +              case PCI_DEVICE_ID_INTEL_HDA_BYT:
 +              case PCI_DEVICE_ID_INTEL_HDA_BSW:
 +                      return 32;
 +              case PCI_DEVICE_ID_INTEL_HDA_APL:
 +                      return 64;
 +              }
 +      }
 +
 +      switch (chip->driver_type) {
 +      /*
 +       * increase the bdl size for Glenfly Gpus for hardware
 +       * limitation on hdac interrupt interval
 +       */
 +      case AZX_DRIVER_GFHDMI:
 +              return 128;
 +      case AZX_DRIVER_ICH:
 +      case AZX_DRIVER_PCH:
 +              return 1;
 +      case AZX_DRIVER_ZHAOXINHDMI:
 +              return 128;
 +      default:
 +              return 32;
 +      }
 +}
 +
 +/*
 + * constructor
 + */
 +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,
 +                    struct azx **rchip)
 +{
 +      static const struct snd_device_ops ops = {
 +              .dev_disconnect = azx_dev_disconnect,
 +              .dev_free = azx_dev_free,
 +      };
 +      struct hda_intel *hda;
 +      struct azx *chip;
 +      int err;
 +
 +      *rchip = NULL;
 +
 +      err = pcim_enable_device(pci);
 +      if (err < 0)
 +              return err;
 +
 +      hda = devm_kzalloc(&pci->dev, sizeof(*hda), GFP_KERNEL);
 +      if (!hda)
 +              return -ENOMEM;
 +
 +      chip = &hda->chip;
 +      mutex_init(&chip->open_mutex);
 +      chip->card = card;
 +      chip->pci = pci;
 +      chip->ops = &pci_hda_ops;
 +      chip->driver_caps = driver_caps;
 +      chip->driver_type = driver_caps & 0xff;
 +      check_msi(chip);
 +      chip->dev_index = dev;
 +      if (jackpoll_ms[dev] >= 50 && jackpoll_ms[dev] <= 60000)
 +              chip->jackpoll_interval = msecs_to_jiffies(jackpoll_ms[dev]);
 +      INIT_LIST_HEAD(&chip->pcm_list);
 +      INIT_WORK(&hda->irq_pending_work, azx_irq_pending_work);
 +      INIT_LIST_HEAD(&hda->list);
 +      init_vga_switcheroo(chip);
 +      init_completion(&hda->probe_wait);
 +
 +      assign_position_fix(chip, check_position_fix(chip, position_fix[dev]));
 +
 +      if (single_cmd < 0) /* allow fallback to single_cmd at errors */
 +              chip->fallback_to_single_cmd = 1;
 +      else /* explicitly set to single_cmd or not */
 +              chip->single_cmd = single_cmd;
 +
 +      azx_check_snoop_available(chip);
 +
 +      if (bdl_pos_adj[dev] < 0)
 +              chip->bdl_pos_adj = default_bdl_pos_adj(chip);
 +      else
 +              chip->bdl_pos_adj = bdl_pos_adj[dev];
 +
 +      err = azx_bus_init(chip, model[dev]);
 +      if (err < 0)
 +              return err;
 +
 +      /* use the non-cached pages in non-snoop mode */
 +      if (!azx_snoop(chip))
 +              azx_bus(chip)->dma_type = SNDRV_DMA_TYPE_DEV_WC;
 +
 +      if (chip->driver_type == AZX_DRIVER_NVIDIA) {
 +              dev_dbg(chip->card->dev, "Enable delay in RIRB handling\n");
 +              chip->bus.core.needs_damn_long_delay = 1;
 +      }
 +
 +      check_probe_mask(chip, dev);
 +
 +      err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, chip, &ops);
 +      if (err < 0) {
 +              dev_err(card->dev, "Error creating device [card]!\n");
 +              azx_free(chip);
 +              return err;
 +      }
 +
 +      /* continue probing in work context as may trigger request module */
 +      INIT_DELAYED_WORK(&hda->probe_work, azx_probe_work);
 +
 +      *rchip = chip;
 +
 +      return 0;
 +}
 +
 +static int azx_first_init(struct azx *chip)
 +{
 +      int dev = chip->dev_index;
 +      struct pci_dev *pci = chip->pci;
 +      struct snd_card *card = chip->card;
 +      struct hdac_bus *bus = azx_bus(chip);
 +      int err;
 +      unsigned short gcap;
 +      unsigned int dma_bits = 64;
 +
 +#if BITS_PER_LONG != 64
 +      /* Fix up base address on ULI M5461 */
 +      if (chip->driver_type == AZX_DRIVER_ULI) {
 +              u16 tmp3;
 +              pci_read_config_word(pci, 0x40, &tmp3);
 +              pci_write_config_word(pci, 0x40, tmp3 | 0x10);
 +              pci_write_config_dword(pci, PCI_BASE_ADDRESS_1, 0);
 +      }
 +#endif
 +      /*
 +       * Fix response write request not synced to memory when handle
 +       * hdac interrupt on Glenfly Gpus
 +       */
 +      if (chip->driver_type == AZX_DRIVER_GFHDMI)
 +              bus->polling_mode = 1;
 +
 +      if (chip->driver_type == AZX_DRIVER_LOONGSON) {
 +              bus->polling_mode = 1;
 +              bus->not_use_interrupts = 1;
 +              bus->access_sdnctl_in_dword = 1;
 +              if (!chip->jackpoll_interval)
 +                      chip->jackpoll_interval = msecs_to_jiffies(1500);
 +      }
 +
 +      if (chip->driver_type == AZX_DRIVER_ZHAOXINHDMI)
 +              bus->polling_mode = 1;
 +
 +      bus->remap_addr = pcim_iomap_region(pci, 0, "ICH HD audio");
 +      if (IS_ERR(bus->remap_addr))
 +              return PTR_ERR(bus->remap_addr);
 +
 +      bus->addr = pci_resource_start(pci, 0);
 +
 +      if (chip->driver_type == AZX_DRIVER_SKL)
 +              snd_hdac_bus_parse_capabilities(bus);
 +
 +      /*
 +       * Some Intel CPUs has always running timer (ART) feature and
 +       * controller may have Global time sync reporting capability, so
 +       * check both of these before declaring synchronized time reporting
 +       * capability SNDRV_PCM_INFO_HAS_LINK_SYNCHRONIZED_ATIME
 +       */
 +      chip->gts_present = false;
 +
 +#ifdef CONFIG_X86
 +      if (bus->ppcap && boot_cpu_has(X86_FEATURE_ART))
 +              chip->gts_present = true;
 +#endif
 +
 +      if (chip->msi && chip->driver_caps & AZX_DCAPS_NO_MSI64) {
 +              dev_dbg(card->dev, "Disabling 64bit MSI\n");
 +              pci->no_64bit_msi = true;
 +      }
 +
 +      pci_set_master(pci);
 +
 +      gcap = azx_readw(chip, GCAP);
 +      dev_dbg(card->dev, "chipset global capabilities = 0x%x\n", gcap);
 +
 +      /* AMD devices support 40 or 48bit DMA, take the safe one */
 +      if (chip->pci->vendor == PCI_VENDOR_ID_AMD)
 +              dma_bits = 40;
 +
 +      /* disable SB600 64bit support for safety */
 +      if (chip->pci->vendor == PCI_VENDOR_ID_ATI) {
 +              struct pci_dev *p_smbus;
 +              dma_bits = 40;
 +              p_smbus = pci_get_device(PCI_VENDOR_ID_ATI,
 +                                       PCI_DEVICE_ID_ATI_SBX00_SMBUS,
 +                                       NULL);
 +              if (p_smbus) {
 +                      if (p_smbus->revision < 0x30)
 +                              gcap &= ~AZX_GCAP_64OK;
 +                      pci_dev_put(p_smbus);
 +              }
 +      }
 +
 +      /* NVidia hardware normally only supports up to 40 bits of DMA */
 +      if (chip->pci->vendor == PCI_VENDOR_ID_NVIDIA)
 +              dma_bits = 40;
 +
 +      /* disable 64bit DMA address on some devices */
 +      if (chip->driver_caps & AZX_DCAPS_NO_64BIT) {
 +              dev_dbg(card->dev, "Disabling 64bit DMA\n");
 +              gcap &= ~AZX_GCAP_64OK;
 +      }
 +
 +      /* disable buffer size rounding to 128-byte multiples if supported */
 +      if (align_buffer_size >= 0)
 +              chip->align_buffer_size = !!align_buffer_size;
 +      else {
 +              if (chip->driver_caps & AZX_DCAPS_NO_ALIGN_BUFSIZE)
 +                      chip->align_buffer_size = 0;
 +              else
 +                      chip->align_buffer_size = 1;
 +      }
 +
 +      /* allow 64bit DMA address if supported by H/W */
 +      if (!(gcap & AZX_GCAP_64OK))
 +              dma_bits = 32;
 +      if (dma_set_mask_and_coherent(&pci->dev, DMA_BIT_MASK(dma_bits)))
 +              dma_set_mask_and_coherent(&pci->dev, DMA_BIT_MASK(32));
 +      dma_set_max_seg_size(&pci->dev, UINT_MAX);
 +
 +      /* read number of streams from GCAP register instead of using
 +       * hardcoded value
 +       */
 +      chip->capture_streams = (gcap >> 8) & 0x0f;
 +      chip->playback_streams = (gcap >> 12) & 0x0f;
 +      if (!chip->playback_streams && !chip->capture_streams) {
 +              /* gcap didn't give any info, switching to old method */
 +
 +              switch (chip->driver_type) {
 +              case AZX_DRIVER_ULI:
 +                      chip->playback_streams = ULI_NUM_PLAYBACK;
 +                      chip->capture_streams = ULI_NUM_CAPTURE;
 +                      break;
 +              case AZX_DRIVER_ATIHDMI:
 +              case AZX_DRIVER_ATIHDMI_NS:
 +                      chip->playback_streams = ATIHDMI_NUM_PLAYBACK;
 +                      chip->capture_streams = ATIHDMI_NUM_CAPTURE;
 +                      break;
 +              case AZX_DRIVER_GFHDMI:
 +              case AZX_DRIVER_ZHAOXINHDMI:
 +              case AZX_DRIVER_GENERIC:
 +              default:
 +                      chip->playback_streams = ICH6_NUM_PLAYBACK;
 +                      chip->capture_streams = ICH6_NUM_CAPTURE;
 +                      break;
 +              }
 +      }
 +      chip->capture_index_offset = 0;
 +      chip->playback_index_offset = chip->capture_streams;
 +      chip->num_streams = chip->playback_streams + chip->capture_streams;
 +
 +      /* sanity check for the SDxCTL.STRM field overflow */
 +      if (chip->num_streams > 15 &&
 +          (chip->driver_caps & AZX_DCAPS_SEPARATE_STREAM_TAG) == 0) {
 +              dev_warn(chip->card->dev, "number of I/O streams is %d, "
 +                       "forcing separate stream tags", chip->num_streams);
 +              chip->driver_caps |= AZX_DCAPS_SEPARATE_STREAM_TAG;
 +      }
 +
 +      /* initialize streams */
 +      err = azx_init_streams(chip);
 +      if (err < 0)
 +              return err;
 +
 +      err = azx_alloc_stream_pages(chip);
 +      if (err < 0)
 +              return err;
 +
 +      /* initialize chip */
 +      azx_init_pci(chip);
 +
 +      snd_hdac_i915_set_bclk(bus);
 +
 +      hda_intel_init_chip(chip, (probe_only[dev] & 2) == 0);
 +
 +      /* codec detection */
 +      if (!azx_bus(chip)->codec_mask) {
 +              dev_err(card->dev, "no codecs found!\n");
 +              /* keep running the rest for the runtime PM */
 +      }
 +
 +      if (azx_acquire_irq(chip, 0) < 0)
 +              return -EBUSY;
 +
 +      strscpy(card->driver, "HDA-Intel");
 +      strscpy(card->shortname, driver_short_names[chip->driver_type],
 +              sizeof(card->shortname));
 +      snprintf(card->longname, sizeof(card->longname),
 +               "%s at 0x%lx irq %i",
 +               card->shortname, bus->addr, bus->irq);
 +
 +      return 0;
 +}
 +
 +#ifdef CONFIG_SND_HDA_PATCH_LOADER
 +/* callback from request_firmware_nowait() */
 +static void azx_firmware_cb(const struct firmware *fw, void *context)
 +{
 +      struct snd_card *card = context;
 +      struct azx *chip = card->private_data;
 +
 +      if (fw)
 +              chip->fw = fw;
 +      else
 +              dev_err(card->dev, "Cannot load firmware, continue without patching\n");
 +      if (!chip->disabled) {
 +              /* continue probing */
 +              azx_probe_continue(chip);
 +      }
 +}
 +#endif
 +
 +static int disable_msi_reset_irq(struct azx *chip)
 +{
 +      struct hdac_bus *bus = azx_bus(chip);
 +      int err;
 +
 +      free_irq(bus->irq, chip);
 +      bus->irq = -1;
 +      chip->card->sync_irq = -1;
 +      pci_free_irq_vectors(chip->pci);
 +      chip->msi = 0;
 +      err = azx_acquire_irq(chip, 1);
 +      if (err < 0)
 +              return err;
 +
 +      return 0;
 +}
 +
 +/* Denylist for skipping the whole probe:
 + * some HD-audio PCI entries are exposed without any codecs, and such devices
 + * should be ignored from the beginning.
 + */
 +static const struct pci_device_id driver_denylist[] = {
 +      { PCI_DEVICE_SUB(0x1022, 0x1487, 0x1043, 0x874f) }, /* ASUS ROG Zenith II / Strix */
 +      { PCI_DEVICE_SUB(0x1022, 0x1487, 0x1462, 0xcb59) }, /* MSI TRX40 Creator */
 +      { PCI_DEVICE_SUB(0x1022, 0x1487, 0x1462, 0xcb60) }, /* MSI TRX40 */
 +      { PCI_DEVICE_SUB(0x1022, 0x15e3, 0x1022, 0xd601) }, /* ASRock X670E Taichi */
 +      {}
 +};
 +
 +static struct pci_device_id driver_denylist_ideapad_z570[] = {
 +      { PCI_DEVICE_SUB(0x10de, 0x0bea, 0x0000, 0x0000) }, /* NVIDIA GF108 HDA */
 +      {}
 +};
 +
 +/* DMI-based denylist, to be used when:
 + *  - PCI subsystem IDs are zero, impossible to distinguish from valid sound cards.
 + *  - Different modifications of the same laptop use different GPU models.
 + */
 +static const struct dmi_system_id driver_denylist_dmi[] = {
 +      {
 +              /* No HDA in NVIDIA DGPU. BIOS disables it, but quirk_nvidia_hda() reenables. */
 +              .matches = {
 +                      DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
 +                      DMI_MATCH(DMI_PRODUCT_VERSION, "Ideapad Z570"),
 +              },
 +              .driver_data = &driver_denylist_ideapad_z570,
 +      },
 +      {}
 +};
 +
 +static const struct hda_controller_ops pci_hda_ops = {
 +      .disable_msi_reset_irq = disable_msi_reset_irq,
 +      .position_check = azx_position_check,
 +};
 +
 +static DECLARE_BITMAP(probed_devs, SNDRV_CARDS);
 +
 +static int azx_probe(struct pci_dev *pci,
 +                   const struct pci_device_id *pci_id)
 +{
 +      const struct dmi_system_id *dmi;
 +      struct snd_card *card;
 +      struct hda_intel *hda;
 +      struct azx *chip;
 +      bool schedule_probe;
 +      int dev;
 +      int err;
 +
 +      if (pci_match_id(driver_denylist, pci)) {
 +              dev_info(&pci->dev, "Skipping the device on the denylist\n");
 +              return -ENODEV;
 +      }
 +
 +      dmi = dmi_first_match(driver_denylist_dmi);
 +      if (dmi && pci_match_id(dmi->driver_data, pci)) {
 +              dev_info(&pci->dev, "Skipping the device on the DMI denylist\n");
 +              return -ENODEV;
 +      }
 +
 +      dev = find_first_zero_bit(probed_devs, SNDRV_CARDS);
 +      if (dev >= SNDRV_CARDS)
 +              return -ENODEV;
 +      if (!enable[dev]) {
 +              set_bit(dev, probed_devs);
 +              return -ENOENT;
 +      }
 +
 +      /*
 +       * stop probe if another Intel's DSP driver should be activated
 +       */
 +      if (dmic_detect) {
 +              err = snd_intel_dsp_driver_probe(pci);
 +              if (err != SND_INTEL_DSP_DRIVER_ANY && err != SND_INTEL_DSP_DRIVER_LEGACY) {
 +                      dev_dbg(&pci->dev, "HDAudio driver not selected, aborting probe\n");
 +                      return -ENODEV;
 +              }
 +      } else {
 +              dev_warn(&pci->dev, "dmic_detect option is deprecated, pass snd-intel-dspcfg.dsp_driver=1 option instead\n");
 +      }
 +
 +      err = snd_card_new(&pci->dev, index[dev], id[dev], THIS_MODULE,
 +                         0, &card);
 +      if (err < 0) {
 +              dev_err(&pci->dev, "Error creating card!\n");
 +              return err;
 +      }
 +
 +      err = azx_create(card, pci, dev, pci_id->driver_data, &chip);
 +      if (err < 0)
 +              goto out_free;
 +      card->private_data = chip;
 +      hda = container_of(chip, struct hda_intel, chip);
 +
 +      pci_set_drvdata(pci, card);
 +
 +#ifdef CONFIG_SND_HDA_I915
 +      /* bind with i915 if needed */
 +      if (chip->driver_caps & AZX_DCAPS_I915_COMPONENT) {
 +              err = snd_hdac_i915_init(azx_bus(chip));
 +              if (err < 0) {
 +                      if (err == -EPROBE_DEFER)
 +                              goto out_free;
 +
 +                      /* if the controller is bound only with HDMI/DP
 +                       * (for HSW and BDW), we need to abort the probe;
 +                       * for other chips, still continue probing as other
 +                       * codecs can be on the same link.
 +                       */
 +                      if (HDA_CONTROLLER_IN_GPU(pci)) {
 +                              dev_err_probe(card->dev, err,
 +                                           "HSW/BDW HD-audio HDMI/DP requires binding with gfx driver\n");
 +
 +                              goto out_free;
 +                      } else {
 +                              /* don't bother any longer */
 +                              chip->driver_caps &= ~AZX_DCAPS_I915_COMPONENT;
 +                      }
 +              }
 +
 +              /* HSW/BDW controllers need this power */
 +              if (HDA_CONTROLLER_IN_GPU(pci))
 +                      hda->need_i915_power = true;
 +      }
 +#else
 +      if (HDA_CONTROLLER_IN_GPU(pci))
 +              dev_err(card->dev, "Haswell/Broadwell HDMI/DP must build in CONFIG_SND_HDA_I915\n");
 +#endif
 +
 +      err = register_vga_switcheroo(chip);
 +      if (err < 0) {
 +              dev_err(card->dev, "Error registering vga_switcheroo client\n");
 +              goto out_free;
 +      }
 +
 +      if (check_hdmi_disabled(pci)) {
 +              dev_info(card->dev, "VGA controller is disabled\n");
 +              dev_info(card->dev, "Delaying initialization\n");
 +              chip->disabled = true;
 +      }
 +
 +      schedule_probe = !chip->disabled;
 +
 +#ifdef CONFIG_SND_HDA_PATCH_LOADER
 +      if (patch[dev] && *patch[dev]) {
 +              dev_info(card->dev, "Applying patch firmware '%s'\n",
 +                       patch[dev]);
 +              err = request_firmware_nowait(THIS_MODULE, true, patch[dev],
 +                                            &pci->dev, GFP_KERNEL, card,
 +                                            azx_firmware_cb);
 +              if (err < 0)
 +                      goto out_free;
 +              schedule_probe = false; /* continued in azx_firmware_cb() */
 +      }
 +#endif /* CONFIG_SND_HDA_PATCH_LOADER */
 +
 +      if (schedule_probe)
 +              schedule_delayed_work(&hda->probe_work, 0);
 +
 +      set_bit(dev, probed_devs);
 +      if (chip->disabled)
 +              complete_all(&hda->probe_wait);
 +      return 0;
 +
 +out_free:
 +      pci_set_drvdata(pci, NULL);
 +      snd_card_free(card);
 +      return err;
 +}
 +
 +/* On some boards setting power_save to a non 0 value leads to clicking /
 + * popping sounds when ever we enter/leave powersaving mode. Ideally we would
 + * figure out how to avoid these sounds, but that is not always feasible.
 + * So we keep a list of devices where we disable powersaving as its known
 + * to causes problems on these devices.
 + */
 +static const struct snd_pci_quirk power_save_denylist[] = {
 +      /* https://bugzilla.redhat.com/show_bug.cgi?id=1525104 */
 +      SND_PCI_QUIRK(0x1849, 0xc892, "Asrock B85M-ITX", 0),
 +      /* https://bugzilla.redhat.com/show_bug.cgi?id=1525104 */
 +      SND_PCI_QUIRK(0x1849, 0x0397, "Asrock N68C-S UCC", 0),
 +      /* https://bugzilla.redhat.com/show_bug.cgi?id=1525104 */
 +      SND_PCI_QUIRK(0x1849, 0x7662, "Asrock H81M-HDS", 0),
 +      /* https://bugzilla.redhat.com/show_bug.cgi?id=1525104 */
 +      SND_PCI_QUIRK(0x1043, 0x8733, "Asus Prime X370-Pro", 0),
 +      /* https://bugzilla.redhat.com/show_bug.cgi?id=1525104 */
 +      SND_PCI_QUIRK(0x1028, 0x0497, "Dell Precision T3600", 0),
 +      /* https://bugzilla.redhat.com/show_bug.cgi?id=1525104 */
 +      /* Note the P55A-UD3 and Z87-D3HP share the subsys id for the HDA dev */
 +      SND_PCI_QUIRK(0x1458, 0xa002, "Gigabyte P55A-UD3 / Z87-D3HP", 0),
 +      /* https://bugzilla.redhat.com/show_bug.cgi?id=1525104 */
 +      SND_PCI_QUIRK(0x8086, 0x2040, "Intel DZ77BH-55K", 0),
 +      /* https://bugzilla.kernel.org/show_bug.cgi?id=199607 */
 +      SND_PCI_QUIRK(0x8086, 0x2057, "Intel NUC5i7RYB", 0),
 +      /* https://bugs.launchpad.net/bugs/1821663 */
 +      SND_PCI_QUIRK(0x8086, 0x2064, "Intel SDP 8086:2064", 0),
 +      /* https://bugzilla.redhat.com/show_bug.cgi?id=1520902 */
 +      SND_PCI_QUIRK(0x8086, 0x2068, "Intel NUC7i3BNB", 0),
 +      /* https://bugzilla.kernel.org/show_bug.cgi?id=198611 */
 +      SND_PCI_QUIRK(0x17aa, 0x2227, "Lenovo X1 Carbon 3rd Gen", 0),
 +      SND_PCI_QUIRK(0x17aa, 0x316e, "Lenovo ThinkCentre M70q", 0),
 +      /* https://bugzilla.redhat.com/show_bug.cgi?id=1689623 */
 +      SND_PCI_QUIRK(0x17aa, 0x367b, "Lenovo IdeaCentre B550", 0),
 +      /* https://bugzilla.redhat.com/show_bug.cgi?id=1572975 */
 +      SND_PCI_QUIRK(0x17aa, 0x36a7, "Lenovo C50 All in one", 0),
 +      /* https://bugs.launchpad.net/bugs/1821663 */
 +      SND_PCI_QUIRK(0x1631, 0xe017, "Packard Bell NEC IMEDIA 5204", 0),
 +      /* KONTRON SinglePC may cause a stall at runtime resume */
 +      SND_PCI_QUIRK(0x1734, 0x1232, "KONTRON SinglePC", 0),
 +      /* Dell ALC3271 */
 +      SND_PCI_QUIRK(0x1028, 0x0962, "Dell ALC3271", 0),
 +      /* https://bugzilla.kernel.org/show_bug.cgi?id=220210 */
 +      SND_PCI_QUIRK(0x17aa, 0x5079, "Lenovo Thinkpad E15", 0),
 +      {}
 +};
 +
 +static void set_default_power_save(struct azx *chip)
 +{
 +      struct hda_intel *hda = container_of(chip, struct hda_intel, chip);
 +      int val = power_save;
 +
 +      if (pm_blacklist < 0) {
 +              const struct snd_pci_quirk *q;
 +
 +              q = snd_pci_quirk_lookup(chip->pci, power_save_denylist);
 +              if (q && val) {
 +                      dev_info(chip->card->dev, "device %04x:%04x is on the power_save denylist, forcing power_save to 0\n",
 +                               q->subvendor, q->subdevice);
 +                      val = 0;
 +                      hda->runtime_pm_disabled = 1;
 +              }
 +      } else if (pm_blacklist > 0) {
 +              dev_info(chip->card->dev, "Forcing power_save to 0 via option\n");
 +              val = 0;
 +      }
 +      snd_hda_set_power_save(&chip->bus, val * 1000);
 +}
 +
 +/* number of codec slots for each chipset: 0 = default slots (i.e. 4) */
 +static const unsigned int azx_max_codecs[AZX_NUM_DRIVERS] = {
 +      [AZX_DRIVER_NVIDIA] = 8,
 +      [AZX_DRIVER_TERA] = 1,
 +};
 +
 +static int azx_probe_continue(struct azx *chip)
 +{
 +      struct hda_intel *hda = container_of(chip, struct hda_intel, chip);
 +      struct hdac_bus *bus = azx_bus(chip);
 +      struct pci_dev *pci = chip->pci;
 +      int dev = chip->dev_index;
 +      int err;
 +
 +      if (chip->disabled || hda->init_failed)
 +              return -EIO;
 +      if (hda->probe_retry)
 +              goto probe_retry;
 +
 +      to_hda_bus(bus)->bus_probing = 1;
 +      hda->probe_continued = 1;
 +
 +      /* Request display power well for the HDA controller or codec. For
 +       * Haswell/Broadwell, both the display HDA controller and codec need
 +       * this power. For other platforms, like Baytrail/Braswell, only the
 +       * display codec needs the power and it can be released after probe.
 +       */
 +      display_power(chip, true);
 +
 +      err = azx_first_init(chip);
 +      if (err < 0)
 +              goto out_free;
 +
 +#ifdef CONFIG_SND_HDA_INPUT_BEEP
 +      chip->beep_mode = beep_mode[dev];
 +#endif
 +
 +      chip->ctl_dev_id = ctl_dev_id;
 +
 +      /* create codec instances */
 +      if (bus->codec_mask) {
 +              err = azx_probe_codecs(chip, azx_max_codecs[chip->driver_type]);
 +              if (err < 0)
 +                      goto out_free;
 +      }
 +
 +#ifdef CONFIG_SND_HDA_PATCH_LOADER
 +      if (chip->fw) {
 +              err = snd_hda_load_patch(&chip->bus, chip->fw->size,
 +                                       chip->fw->data);
 +              if (err < 0)
 +                      goto out_free;
 +      }
 +#endif
 +
 + probe_retry:
 +      if (bus->codec_mask && !(probe_only[dev] & 1)) {
 +              err = azx_codec_configure(chip);
 +              if (err) {
 +                      if ((chip->driver_caps & AZX_DCAPS_RETRY_PROBE) &&
 +                          ++hda->probe_retry < 60) {
 +                              schedule_delayed_work(&hda->probe_work,
 +                                                    msecs_to_jiffies(1000));
 +                              return 0; /* keep things up */
 +                      }
 +                      dev_err(chip->card->dev, "Cannot probe codecs, giving up\n");
 +                      goto out_free;
 +              }
 +      }
 +
 +      err = snd_card_register(chip->card);
 +      if (err < 0)
 +              goto out_free;
 +
 +      setup_vga_switcheroo_runtime_pm(chip);
 +
 +      chip->running = 1;
 +      azx_add_card_list(chip);
 +
 +      set_default_power_save(chip);
 +
 +      if (azx_has_pm_runtime(chip)) {
 +              pm_runtime_use_autosuspend(&pci->dev);
 +              pm_runtime_allow(&pci->dev);
 +              pm_runtime_put_autosuspend(&pci->dev);
 +      }
 +
 +out_free:
 +      if (err < 0) {
 +              pci_set_drvdata(pci, NULL);
 +              snd_card_free(chip->card);
 +              return err;
 +      }
 +
 +      if (!hda->need_i915_power)
 +              display_power(chip, false);
 +      complete_all(&hda->probe_wait);
 +      to_hda_bus(bus)->bus_probing = 0;
 +      hda->probe_retry = 0;
 +      return 0;
 +}
 +
 +static void azx_remove(struct pci_dev *pci)
 +{
 +      struct snd_card *card = pci_get_drvdata(pci);
 +      struct azx *chip;
 +      struct hda_intel *hda;
 +
 +      if (card) {
 +              /* cancel the pending probing work */
 +              chip = card->private_data;
 +              hda = container_of(chip, struct hda_intel, chip);
 +              /* FIXME: below is an ugly workaround.
 +               * Both device_release_driver() and driver_probe_device()
 +               * take *both* the device's and its parent's lock before
 +               * calling the remove() and probe() callbacks.  The codec
 +               * probe takes the locks of both the codec itself and its
 +               * parent, i.e. the PCI controller dev.  Meanwhile, when
 +               * the PCI controller is unbound, it takes its lock, too
 +               * ==> ouch, a deadlock!
 +               * As a workaround, we unlock temporarily here the controller
 +               * device during cancel_work_sync() call.
 +               */
 +              device_unlock(&pci->dev);
 +              cancel_delayed_work_sync(&hda->probe_work);
 +              device_lock(&pci->dev);
 +
 +              clear_bit(chip->dev_index, probed_devs);
 +              pci_set_drvdata(pci, NULL);
 +              snd_card_free(card);
 +      }
 +}
 +
 +static void azx_shutdown(struct pci_dev *pci)
 +{
 +      struct snd_card *card = pci_get_drvdata(pci);
 +      struct azx *chip;
 +
 +      if (!card)
 +              return;
 +      chip = card->private_data;
 +      if (chip && chip->running)
 +              __azx_shutdown_chip(chip, true);
 +}
 +
 +/* PCI IDs */
 +static const struct pci_device_id azx_ids[] = {
 +      /* CPT */
 +      { PCI_DEVICE_DATA(INTEL, HDA_CPT, AZX_DRIVER_PCH | AZX_DCAPS_INTEL_PCH_NOPM) },
 +      /* PBG */
 +      { PCI_DEVICE_DATA(INTEL, HDA_PBG, AZX_DRIVER_PCH | AZX_DCAPS_INTEL_PCH_NOPM) },
 +      /* Panther Point */
 +      { PCI_DEVICE_DATA(INTEL, HDA_PPT, AZX_DRIVER_PCH | AZX_DCAPS_INTEL_PCH_NOPM) },
 +      /* Lynx Point */
 +      { PCI_DEVICE_DATA(INTEL, HDA_LPT, AZX_DRIVER_PCH | AZX_DCAPS_INTEL_PCH) },
 +      /* 9 Series */
 +      { PCI_DEVICE_DATA(INTEL, HDA_9_SERIES, AZX_DRIVER_PCH | AZX_DCAPS_INTEL_PCH) },
 +      /* Wellsburg */
 +      { PCI_DEVICE_DATA(INTEL, HDA_WBG_0, AZX_DRIVER_PCH | AZX_DCAPS_INTEL_PCH) },
 +      { PCI_DEVICE_DATA(INTEL, HDA_WBG_1, AZX_DRIVER_PCH | AZX_DCAPS_INTEL_PCH) },
 +      /* Lewisburg */
 +      { PCI_DEVICE_DATA(INTEL, HDA_LBG_0, AZX_DRIVER_PCH | AZX_DCAPS_INTEL_SKYLAKE) },
 +      { PCI_DEVICE_DATA(INTEL, HDA_LBG_1, AZX_DRIVER_PCH | AZX_DCAPS_INTEL_SKYLAKE) },
 +      /* Lynx Point-LP */
 +      { PCI_DEVICE_DATA(INTEL, HDA_LPT_LP_0, AZX_DRIVER_PCH | AZX_DCAPS_INTEL_PCH) },
 +      /* Lynx Point-LP */
 +      { PCI_DEVICE_DATA(INTEL, HDA_LPT_LP_1, AZX_DRIVER_PCH | AZX_DCAPS_INTEL_PCH) },
 +      /* Wildcat Point-LP */
 +      { PCI_DEVICE_DATA(INTEL, HDA_WPT_LP, AZX_DRIVER_PCH | AZX_DCAPS_INTEL_PCH) },
 +      /* Skylake (Sunrise Point) */
 +      { PCI_DEVICE_DATA(INTEL, HDA_SKL, AZX_DRIVER_SKL | AZX_DCAPS_INTEL_SKYLAKE) },
 +      /* Skylake-LP (Sunrise Point-LP) */
 +      { PCI_DEVICE_DATA(INTEL, HDA_SKL_LP, AZX_DRIVER_SKL | AZX_DCAPS_INTEL_SKYLAKE) },
 +      /* Kabylake */
 +      { PCI_DEVICE_DATA(INTEL, HDA_KBL, AZX_DRIVER_SKL | AZX_DCAPS_INTEL_SKYLAKE) },
 +      /* Kabylake-LP */
 +      { PCI_DEVICE_DATA(INTEL, HDA_KBL_LP, AZX_DRIVER_SKL | AZX_DCAPS_INTEL_SKYLAKE) },
 +      /* Kabylake-H */
 +      { PCI_DEVICE_DATA(INTEL, HDA_KBL_H, AZX_DRIVER_SKL | AZX_DCAPS_INTEL_SKYLAKE) },
 +      /* Coffelake */
 +      { PCI_DEVICE_DATA(INTEL, HDA_CNL_H, AZX_DRIVER_SKL | AZX_DCAPS_INTEL_SKYLAKE) },
 +      /* Cannonlake */
 +      { PCI_DEVICE_DATA(INTEL, HDA_CNL_LP, AZX_DRIVER_SKL | AZX_DCAPS_INTEL_SKYLAKE) },
 +      /* CometLake-LP */
 +      { PCI_DEVICE_DATA(INTEL, HDA_CML_LP, AZX_DRIVER_SKL | AZX_DCAPS_INTEL_SKYLAKE) },
 +      /* CometLake-H */
 +      { PCI_DEVICE_DATA(INTEL, HDA_CML_H, AZX_DRIVER_SKL | AZX_DCAPS_INTEL_SKYLAKE) },
 +      { PCI_DEVICE_DATA(INTEL, HDA_RKL_S, AZX_DRIVER_SKL | AZX_DCAPS_INTEL_SKYLAKE) },
 +      /* CometLake-S */
 +      { PCI_DEVICE_DATA(INTEL, HDA_CML_S, AZX_DRIVER_SKL | AZX_DCAPS_INTEL_SKYLAKE) },
 +      /* CometLake-R */
 +      { PCI_DEVICE_DATA(INTEL, HDA_CML_R, AZX_DRIVER_SKL | AZX_DCAPS_INTEL_SKYLAKE) },
 +      /* Icelake */
 +      { PCI_DEVICE_DATA(INTEL, HDA_ICL_LP, AZX_DRIVER_SKL | AZX_DCAPS_INTEL_SKYLAKE) },
 +      /* Icelake-H */
 +      { PCI_DEVICE_DATA(INTEL, HDA_ICL_H, AZX_DRIVER_SKL | AZX_DCAPS_INTEL_SKYLAKE) },
 +      /* Jasperlake */
 +      { PCI_DEVICE_DATA(INTEL, HDA_ICL_N, AZX_DRIVER_SKL | AZX_DCAPS_INTEL_SKYLAKE) },
 +      { PCI_DEVICE_DATA(INTEL, HDA_JSL_N, AZX_DRIVER_SKL | AZX_DCAPS_INTEL_SKYLAKE) },
 +      /* Tigerlake */
 +      { PCI_DEVICE_DATA(INTEL, HDA_TGL_LP, AZX_DRIVER_SKL | AZX_DCAPS_INTEL_SKYLAKE) },
 +      /* Tigerlake-H */
 +      { PCI_DEVICE_DATA(INTEL, HDA_TGL_H, AZX_DRIVER_SKL | AZX_DCAPS_INTEL_SKYLAKE) },
 +      /* DG1 */
 +      { PCI_DEVICE_DATA(INTEL, HDA_DG1, AZX_DRIVER_SKL | AZX_DCAPS_INTEL_SKYLAKE) },
 +      /* DG2 */
 +      { PCI_DEVICE_DATA(INTEL, HDA_DG2_0, AZX_DRIVER_SKL | AZX_DCAPS_INTEL_SKYLAKE) },
 +      { PCI_DEVICE_DATA(INTEL, HDA_DG2_1, AZX_DRIVER_SKL | AZX_DCAPS_INTEL_SKYLAKE) },
 +      { PCI_DEVICE_DATA(INTEL, HDA_DG2_2, AZX_DRIVER_SKL | AZX_DCAPS_INTEL_SKYLAKE) },
 +      /* Alderlake-S */
 +      { PCI_DEVICE_DATA(INTEL, HDA_ADL_S, AZX_DRIVER_SKL | AZX_DCAPS_INTEL_SKYLAKE) },
 +      /* Alderlake-P */
 +      { PCI_DEVICE_DATA(INTEL, HDA_ADL_P, AZX_DRIVER_SKL | AZX_DCAPS_INTEL_SKYLAKE) },
 +      { PCI_DEVICE_DATA(INTEL, HDA_ADL_PS, AZX_DRIVER_SKL | AZX_DCAPS_INTEL_SKYLAKE) },
 +      { PCI_DEVICE_DATA(INTEL, HDA_ADL_PX, AZX_DRIVER_SKL | AZX_DCAPS_INTEL_SKYLAKE) },
 +      /* Alderlake-M */
 +      { PCI_DEVICE_DATA(INTEL, HDA_ADL_M, AZX_DRIVER_SKL | AZX_DCAPS_INTEL_SKYLAKE) },
 +      /* Alderlake-N */
 +      { PCI_DEVICE_DATA(INTEL, HDA_ADL_N, AZX_DRIVER_SKL | AZX_DCAPS_INTEL_SKYLAKE) },
 +      /* Elkhart Lake */
 +      { PCI_DEVICE_DATA(INTEL, HDA_EHL_0, AZX_DRIVER_SKL | AZX_DCAPS_INTEL_SKYLAKE) },
 +      { PCI_DEVICE_DATA(INTEL, HDA_EHL_3, AZX_DRIVER_SKL | AZX_DCAPS_INTEL_SKYLAKE) },
 +      /* Raptor Lake */
 +      { PCI_DEVICE_DATA(INTEL, HDA_RPL_S, AZX_DRIVER_SKL | AZX_DCAPS_INTEL_SKYLAKE) },
 +      { PCI_DEVICE_DATA(INTEL, HDA_RPL_P_0, AZX_DRIVER_SKL | AZX_DCAPS_INTEL_SKYLAKE) },
 +      { PCI_DEVICE_DATA(INTEL, HDA_RPL_P_1, AZX_DRIVER_SKL | AZX_DCAPS_INTEL_SKYLAKE) },
 +      { PCI_DEVICE_DATA(INTEL, HDA_RPL_M, AZX_DRIVER_SKL | AZX_DCAPS_INTEL_SKYLAKE) },
 +      { PCI_DEVICE_DATA(INTEL, HDA_RPL_PX, AZX_DRIVER_SKL | AZX_DCAPS_INTEL_SKYLAKE) },
 +      { PCI_DEVICE_DATA(INTEL, HDA_MTL, AZX_DRIVER_SKL | AZX_DCAPS_INTEL_SKYLAKE) },
 +      /* Battlemage */
 +      { PCI_DEVICE_DATA(INTEL, HDA_BMG, AZX_DRIVER_SKL | AZX_DCAPS_INTEL_SKYLAKE) },
 +      /* Lunarlake-P */
 +      { PCI_DEVICE_DATA(INTEL, HDA_LNL_P, AZX_DRIVER_SKL | AZX_DCAPS_INTEL_LNL) },
 +      /* Arrow Lake-S */
 +      { PCI_DEVICE_DATA(INTEL, HDA_ARL_S, AZX_DRIVER_SKL | AZX_DCAPS_INTEL_SKYLAKE) },
 +      /* Arrow Lake */
 +      { PCI_DEVICE_DATA(INTEL, HDA_ARL, AZX_DRIVER_SKL | AZX_DCAPS_INTEL_SKYLAKE) },
 +      /* Panther Lake */
 +      { PCI_DEVICE_DATA(INTEL, HDA_PTL, AZX_DRIVER_SKL | AZX_DCAPS_INTEL_LNL) },
 +      /* Panther Lake-H */
 +      { PCI_DEVICE_DATA(INTEL, HDA_PTL_H, AZX_DRIVER_SKL | AZX_DCAPS_INTEL_LNL) },
 +      /* Wildcat Lake */
 +      { PCI_DEVICE_DATA(INTEL, HDA_WCL, AZX_DRIVER_SKL | AZX_DCAPS_INTEL_LNL) },
 +      /* Apollolake (Broxton-P) */
 +      { PCI_DEVICE_DATA(INTEL, HDA_APL, AZX_DRIVER_SKL | AZX_DCAPS_INTEL_BROXTON) },
 +      /* Gemini-Lake */
 +      { PCI_DEVICE_DATA(INTEL, HDA_GML, AZX_DRIVER_SKL | AZX_DCAPS_INTEL_BROXTON) },
 +      /* Haswell */
 +      { PCI_DEVICE_DATA(INTEL, HDA_HSW_0, AZX_DRIVER_HDMI | AZX_DCAPS_INTEL_HASWELL) },
 +      { PCI_DEVICE_DATA(INTEL, HDA_HSW_2, AZX_DRIVER_HDMI | AZX_DCAPS_INTEL_HASWELL) },
 +      { PCI_DEVICE_DATA(INTEL, HDA_HSW_3, AZX_DRIVER_HDMI | AZX_DCAPS_INTEL_HASWELL) },
 +      /* Broadwell */
 +      { PCI_DEVICE_DATA(INTEL, HDA_BDW, AZX_DRIVER_HDMI | AZX_DCAPS_INTEL_BROADWELL) },
 +      /* 5 Series/3400 */
 +      { PCI_DEVICE_DATA(INTEL, HDA_5_3400_SERIES_0, AZX_DRIVER_SCH | AZX_DCAPS_INTEL_PCH_NOPM) },
 +      { PCI_DEVICE_DATA(INTEL, HDA_5_3400_SERIES_1, AZX_DRIVER_SCH | AZX_DCAPS_INTEL_PCH_NOPM) },
 +      /* Poulsbo */
 +      { PCI_DEVICE_DATA(INTEL, HDA_POULSBO, AZX_DRIVER_SCH | AZX_DCAPS_INTEL_PCH_BASE |
 +        AZX_DCAPS_POSFIX_LPIB) },
 +      /* Oaktrail */
 +      { PCI_DEVICE_DATA(INTEL, HDA_OAKTRAIL, AZX_DRIVER_SCH | AZX_DCAPS_INTEL_PCH_BASE) },
 +      /* BayTrail */
 +      { PCI_DEVICE_DATA(INTEL, HDA_BYT, AZX_DRIVER_PCH | AZX_DCAPS_INTEL_BAYTRAIL) },
 +      /* Braswell */
 +      { PCI_DEVICE_DATA(INTEL, HDA_BSW, AZX_DRIVER_PCH | AZX_DCAPS_INTEL_BRASWELL) },
 +      /* ICH6 */
 +      { PCI_DEVICE_DATA(INTEL, HDA_ICH6, AZX_DRIVER_ICH | AZX_DCAPS_INTEL_ICH) },
 +      /* ICH7 */
 +      { PCI_DEVICE_DATA(INTEL, HDA_ICH7, AZX_DRIVER_ICH | AZX_DCAPS_INTEL_ICH) },
 +      /* ESB2 */
 +      { PCI_DEVICE_DATA(INTEL, HDA_ESB2, AZX_DRIVER_ICH | AZX_DCAPS_INTEL_ICH) },
 +      /* ICH8 */
 +      { PCI_DEVICE_DATA(INTEL, HDA_ICH8, AZX_DRIVER_ICH | AZX_DCAPS_INTEL_ICH) },
 +      /* ICH9 */
 +      { PCI_DEVICE_DATA(INTEL, HDA_ICH9_0, AZX_DRIVER_ICH | AZX_DCAPS_INTEL_ICH) },
 +      /* ICH9 */
 +      { PCI_DEVICE_DATA(INTEL, HDA_ICH9_1, AZX_DRIVER_ICH | AZX_DCAPS_INTEL_ICH) },
 +      /* ICH10 */
 +      { PCI_DEVICE_DATA(INTEL, HDA_ICH10_0, AZX_DRIVER_ICH | AZX_DCAPS_INTEL_ICH) },
 +      /* ICH10 */
 +      { PCI_DEVICE_DATA(INTEL, HDA_ICH10_1, AZX_DRIVER_ICH | AZX_DCAPS_INTEL_ICH) },
 +      /* Generic Intel */
 +      { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_ANY_ID),
 +        .class = PCI_CLASS_MULTIMEDIA_HD_AUDIO << 8,
 +        .class_mask = 0xffffff,
 +        .driver_data = AZX_DRIVER_ICH | AZX_DCAPS_NO_ALIGN_BUFSIZE },
 +      /* ATI SB 450/600/700/800/900 */
 +      { PCI_VDEVICE(ATI, 0x437b),
 +        .driver_data = AZX_DRIVER_ATI | AZX_DCAPS_PRESET_ATI_SB },
 +      { PCI_VDEVICE(ATI, 0x4383),
 +        .driver_data = AZX_DRIVER_ATI | AZX_DCAPS_PRESET_ATI_SB },
 +      /* AMD Hudson */
 +      { PCI_VDEVICE(AMD, 0x780d),
 +        .driver_data = AZX_DRIVER_GENERIC | AZX_DCAPS_PRESET_ATI_SB },
 +      /* AMD, X370 & co */
 +      { PCI_VDEVICE(AMD, 0x1457),
 +        .driver_data = AZX_DRIVER_GENERIC | AZX_DCAPS_PRESET_AMD_SB },
 +      /* AMD, X570 & co */
 +      { PCI_VDEVICE(AMD, 0x1487),
 +        .driver_data = AZX_DRIVER_GENERIC | AZX_DCAPS_PRESET_AMD_SB },
 +      /* AMD Stoney */
 +      { PCI_VDEVICE(AMD, 0x157a),
 +        .driver_data = AZX_DRIVER_GENERIC | AZX_DCAPS_PRESET_ATI_SB |
 +                       AZX_DCAPS_PM_RUNTIME },
 +      /* AMD Raven */
 +      { PCI_VDEVICE(AMD, 0x15e3),
 +        .driver_data = AZX_DRIVER_GENERIC | AZX_DCAPS_PRESET_AMD_SB },
 +      /* ATI HDMI */
 +      { PCI_VDEVICE(ATI, 0x0002),
 +        .driver_data = AZX_DRIVER_ATIHDMI_NS | AZX_DCAPS_PRESET_ATI_HDMI_NS |
 +        AZX_DCAPS_PM_RUNTIME },
 +      { PCI_VDEVICE(ATI, 0x1308),
 +        .driver_data = AZX_DRIVER_ATIHDMI_NS | AZX_DCAPS_PRESET_ATI_HDMI_NS },
 +      { PCI_VDEVICE(ATI, 0x157a),
 +        .driver_data = AZX_DRIVER_ATIHDMI_NS | AZX_DCAPS_PRESET_ATI_HDMI_NS },
 +      { PCI_VDEVICE(ATI, 0x15b3),
 +        .driver_data = AZX_DRIVER_ATIHDMI_NS | AZX_DCAPS_PRESET_ATI_HDMI_NS },
 +      { PCI_VDEVICE(ATI, 0x793b),
 +        .driver_data = AZX_DRIVER_ATIHDMI | AZX_DCAPS_PRESET_ATI_HDMI },
 +      { PCI_VDEVICE(ATI, 0x7919),
 +        .driver_data = AZX_DRIVER_ATIHDMI | AZX_DCAPS_PRESET_ATI_HDMI },
 +      { PCI_VDEVICE(ATI, 0x960f),
 +        .driver_data = AZX_DRIVER_ATIHDMI | AZX_DCAPS_PRESET_ATI_HDMI },
 +      { PCI_VDEVICE(ATI, 0x970f),
 +        .driver_data = AZX_DRIVER_ATIHDMI | AZX_DCAPS_PRESET_ATI_HDMI },
 +      { PCI_VDEVICE(ATI, 0x9840),
 +        .driver_data = AZX_DRIVER_ATIHDMI_NS | AZX_DCAPS_PRESET_ATI_HDMI_NS },
 +      { PCI_VDEVICE(ATI, 0xaa00),
 +        .driver_data = AZX_DRIVER_ATIHDMI | AZX_DCAPS_PRESET_ATI_HDMI },
 +      { PCI_VDEVICE(ATI, 0xaa08),
 +        .driver_data = AZX_DRIVER_ATIHDMI | AZX_DCAPS_PRESET_ATI_HDMI },
 +      { PCI_VDEVICE(ATI, 0xaa10),
 +        .driver_data = AZX_DRIVER_ATIHDMI | AZX_DCAPS_PRESET_ATI_HDMI },
 +      { PCI_VDEVICE(ATI, 0xaa18),
 +        .driver_data = AZX_DRIVER_ATIHDMI | AZX_DCAPS_PRESET_ATI_HDMI },
 +      { PCI_VDEVICE(ATI, 0xaa20),
 +        .driver_data = AZX_DRIVER_ATIHDMI | AZX_DCAPS_PRESET_ATI_HDMI },
 +      { PCI_VDEVICE(ATI, 0xaa28),
 +        .driver_data = AZX_DRIVER_ATIHDMI | AZX_DCAPS_PRESET_ATI_HDMI },
 +      { PCI_VDEVICE(ATI, 0xaa30),
 +        .driver_data = AZX_DRIVER_ATIHDMI | AZX_DCAPS_PRESET_ATI_HDMI },
 +      { PCI_VDEVICE(ATI, 0xaa38),
 +        .driver_data = AZX_DRIVER_ATIHDMI | AZX_DCAPS_PRESET_ATI_HDMI },
 +      { PCI_VDEVICE(ATI, 0xaa40),
 +        .driver_data = AZX_DRIVER_ATIHDMI | AZX_DCAPS_PRESET_ATI_HDMI },
 +      { PCI_VDEVICE(ATI, 0xaa48),
 +        .driver_data = AZX_DRIVER_ATIHDMI | AZX_DCAPS_PRESET_ATI_HDMI },
 +      { PCI_VDEVICE(ATI, 0xaa50),
 +        .driver_data = AZX_DRIVER_ATIHDMI | AZX_DCAPS_PRESET_ATI_HDMI },
 +      { PCI_VDEVICE(ATI, 0xaa58),
 +        .driver_data = AZX_DRIVER_ATIHDMI | AZX_DCAPS_PRESET_ATI_HDMI },
 +      { PCI_VDEVICE(ATI, 0xaa60),
 +        .driver_data = AZX_DRIVER_ATIHDMI | AZX_DCAPS_PRESET_ATI_HDMI },
 +      { PCI_VDEVICE(ATI, 0xaa68),
 +        .driver_data = AZX_DRIVER_ATIHDMI | AZX_DCAPS_PRESET_ATI_HDMI },
 +      { PCI_VDEVICE(ATI, 0xaa80),
 +        .driver_data = AZX_DRIVER_ATIHDMI | AZX_DCAPS_PRESET_ATI_HDMI },
 +      { PCI_VDEVICE(ATI, 0xaa88),
 +        .driver_data = AZX_DRIVER_ATIHDMI | AZX_DCAPS_PRESET_ATI_HDMI },
 +      { PCI_VDEVICE(ATI, 0xaa90),
 +        .driver_data = AZX_DRIVER_ATIHDMI | AZX_DCAPS_PRESET_ATI_HDMI },
 +      { PCI_VDEVICE(ATI, 0xaa98),
 +        .driver_data = AZX_DRIVER_ATIHDMI | AZX_DCAPS_PRESET_ATI_HDMI },
 +      { PCI_VDEVICE(ATI, 0x9902),
 +        .driver_data = AZX_DRIVER_ATIHDMI_NS | AZX_DCAPS_PRESET_ATI_HDMI_NS },
 +      { PCI_VDEVICE(ATI, 0xaaa0),
 +        .driver_data = AZX_DRIVER_ATIHDMI_NS | AZX_DCAPS_PRESET_ATI_HDMI_NS },
 +      { PCI_VDEVICE(ATI, 0xaaa8),
 +        .driver_data = AZX_DRIVER_ATIHDMI_NS | AZX_DCAPS_PRESET_ATI_HDMI_NS },
 +      { PCI_VDEVICE(ATI, 0xaab0),
 +        .driver_data = AZX_DRIVER_ATIHDMI_NS | AZX_DCAPS_PRESET_ATI_HDMI_NS },
 +      { PCI_VDEVICE(ATI, 0xaac0),
 +        .driver_data = AZX_DRIVER_ATIHDMI_NS | AZX_DCAPS_PRESET_ATI_HDMI_NS |
 +        AZX_DCAPS_PM_RUNTIME },
 +      { PCI_VDEVICE(ATI, 0xaac8),
 +        .driver_data = AZX_DRIVER_ATIHDMI_NS | AZX_DCAPS_PRESET_ATI_HDMI_NS |
 +        AZX_DCAPS_PM_RUNTIME },
 +      { PCI_VDEVICE(ATI, 0xaad8),
 +        .driver_data = AZX_DRIVER_ATIHDMI_NS | AZX_DCAPS_PRESET_ATI_HDMI_NS |
 +        AZX_DCAPS_PM_RUNTIME },
 +      { PCI_VDEVICE(ATI, 0xaae0),
 +        .driver_data = AZX_DRIVER_ATIHDMI_NS | AZX_DCAPS_PRESET_ATI_HDMI_NS |
 +        AZX_DCAPS_PM_RUNTIME },
 +      { PCI_VDEVICE(ATI, 0xaae8),
 +        .driver_data = AZX_DRIVER_ATIHDMI_NS | AZX_DCAPS_PRESET_ATI_HDMI_NS |
 +        AZX_DCAPS_PM_RUNTIME },
 +      { PCI_VDEVICE(ATI, 0xaaf0),
 +        .driver_data = AZX_DRIVER_ATIHDMI_NS | AZX_DCAPS_PRESET_ATI_HDMI_NS |
 +        AZX_DCAPS_PM_RUNTIME },
 +      { PCI_VDEVICE(ATI, 0xaaf8),
 +        .driver_data = AZX_DRIVER_ATIHDMI_NS | AZX_DCAPS_PRESET_ATI_HDMI_NS |
 +        AZX_DCAPS_PM_RUNTIME },
 +      { PCI_VDEVICE(ATI, 0xab00),
 +        .driver_data = AZX_DRIVER_ATIHDMI_NS | AZX_DCAPS_PRESET_ATI_HDMI_NS |
 +        AZX_DCAPS_PM_RUNTIME },
 +      { PCI_VDEVICE(ATI, 0xab08),
 +        .driver_data = AZX_DRIVER_ATIHDMI_NS | AZX_DCAPS_PRESET_ATI_HDMI_NS |
 +        AZX_DCAPS_PM_RUNTIME },
 +      { PCI_VDEVICE(ATI, 0xab10),
 +        .driver_data = AZX_DRIVER_ATIHDMI_NS | AZX_DCAPS_PRESET_ATI_HDMI_NS |
 +        AZX_DCAPS_PM_RUNTIME },
 +      { PCI_VDEVICE(ATI, 0xab18),
 +        .driver_data = AZX_DRIVER_ATIHDMI_NS | AZX_DCAPS_PRESET_ATI_HDMI_NS |
 +        AZX_DCAPS_PM_RUNTIME },
 +      { PCI_VDEVICE(ATI, 0xab20),
 +        .driver_data = AZX_DRIVER_ATIHDMI_NS | AZX_DCAPS_PRESET_ATI_HDMI_NS |
 +        AZX_DCAPS_PM_RUNTIME },
 +      { PCI_VDEVICE(ATI, 0xab28),
 +        .driver_data = AZX_DRIVER_ATIHDMI_NS | AZX_DCAPS_PRESET_ATI_HDMI_NS |
 +        AZX_DCAPS_PM_RUNTIME },
 +      { PCI_VDEVICE(ATI, 0xab30),
 +        .driver_data = AZX_DRIVER_ATIHDMI_NS | AZX_DCAPS_PRESET_ATI_HDMI_NS |
 +        AZX_DCAPS_PM_RUNTIME },
 +      { PCI_VDEVICE(ATI, 0xab38),
 +        .driver_data = AZX_DRIVER_ATIHDMI_NS | AZX_DCAPS_PRESET_ATI_HDMI_NS |
 +        AZX_DCAPS_PM_RUNTIME },
 +      { PCI_VDEVICE(ATI, 0xab40),
 +        .driver_data = AZX_DRIVER_ATIHDMI_NS | AZX_DCAPS_PRESET_ATI_HDMI_NS |
 +        AZX_DCAPS_PM_RUNTIME },
 +      /* GLENFLY */
 +      { PCI_DEVICE(PCI_VENDOR_ID_GLENFLY, PCI_ANY_ID),
 +        .class = PCI_CLASS_MULTIMEDIA_HD_AUDIO << 8,
 +        .class_mask = 0xffffff,
 +        .driver_data = AZX_DRIVER_GFHDMI | AZX_DCAPS_POSFIX_LPIB |
 +        AZX_DCAPS_NO_MSI | AZX_DCAPS_NO_64BIT },
 +      /* VIA VT8251/VT8237A */
 +      { PCI_VDEVICE(VIA, 0x3288), .driver_data = AZX_DRIVER_VIA },
 +      /* VIA GFX VT7122/VX900 */
 +      { PCI_VDEVICE(VIA, 0x9170), .driver_data = AZX_DRIVER_GENERIC },
 +      /* VIA GFX VT6122/VX11 */
 +      { PCI_VDEVICE(VIA, 0x9140), .driver_data = AZX_DRIVER_GENERIC },
 +      /* SIS966 */
 +      { PCI_VDEVICE(SI, 0x7502), .driver_data = AZX_DRIVER_SIS },
 +      /* ULI M5461 */
 +      { PCI_VDEVICE(AL, 0x5461), .driver_data = AZX_DRIVER_ULI },
 +      /* NVIDIA MCP */
 +      { PCI_DEVICE(PCI_VENDOR_ID_NVIDIA, PCI_ANY_ID),
 +        .class = PCI_CLASS_MULTIMEDIA_HD_AUDIO << 8,
 +        .class_mask = 0xffffff,
 +        .driver_data = AZX_DRIVER_NVIDIA | AZX_DCAPS_PRESET_NVIDIA },
 +      /* Teradici */
 +      { PCI_DEVICE(0x6549, 0x1200),
 +        .driver_data = AZX_DRIVER_TERA | AZX_DCAPS_NO_64BIT },
 +      { PCI_DEVICE(0x6549, 0x2200),
 +        .driver_data = AZX_DRIVER_TERA | AZX_DCAPS_NO_64BIT },
 +      /* Creative X-Fi (CA0110-IBG) */
 +      /* CTHDA chips */
 +      { PCI_VDEVICE(CREATIVE, 0x0010),
 +        .driver_data = AZX_DRIVER_CTHDA | AZX_DCAPS_PRESET_CTHDA },
 +      { PCI_VDEVICE(CREATIVE, 0x0012),
 +        .driver_data = AZX_DRIVER_CTHDA | AZX_DCAPS_PRESET_CTHDA },
 +#if !IS_ENABLED(CONFIG_SND_CTXFI)
 +      /* the following entry conflicts with snd-ctxfi driver,
 +       * as ctxfi driver mutates from HD-audio to native mode with
 +       * a special command sequence.
 +       */
 +      { PCI_DEVICE(PCI_VENDOR_ID_CREATIVE, PCI_ANY_ID),
 +        .class = PCI_CLASS_MULTIMEDIA_HD_AUDIO << 8,
 +        .class_mask = 0xffffff,
 +        .driver_data = AZX_DRIVER_CTX | AZX_DCAPS_CTX_WORKAROUND |
 +        AZX_DCAPS_NO_64BIT | AZX_DCAPS_POSFIX_LPIB },
 +#else
 +      /* this entry seems still valid -- i.e. without emu20kx chip */
 +      { PCI_VDEVICE(CREATIVE, 0x0009),
 +        .driver_data = AZX_DRIVER_CTX | AZX_DCAPS_CTX_WORKAROUND |
 +        AZX_DCAPS_NO_64BIT | AZX_DCAPS_POSFIX_LPIB },
 +#endif
 +      /* CM8888 */
 +      { PCI_VDEVICE(CMEDIA, 0x5011),
 +        .driver_data = AZX_DRIVER_CMEDIA |
 +        AZX_DCAPS_NO_MSI | AZX_DCAPS_POSFIX_LPIB | AZX_DCAPS_SNOOP_OFF },
 +      /* Vortex86MX */
 +      { PCI_VDEVICE(RDC, 0x3010), .driver_data = AZX_DRIVER_GENERIC },
 +      /* VMware HDAudio */
 +      { PCI_VDEVICE(VMWARE, 0x1977), .driver_data = AZX_DRIVER_GENERIC },
 +      /* AMD/ATI Generic, PCI class code and Vendor ID for HD Audio */
 +      { PCI_DEVICE(PCI_VENDOR_ID_ATI, PCI_ANY_ID),
 +        .class = PCI_CLASS_MULTIMEDIA_HD_AUDIO << 8,
 +        .class_mask = 0xffffff,
 +        .driver_data = AZX_DRIVER_GENERIC | AZX_DCAPS_PRESET_ATI_HDMI },
 +      { PCI_DEVICE(PCI_VENDOR_ID_AMD, PCI_ANY_ID),
 +        .class = PCI_CLASS_MULTIMEDIA_HD_AUDIO << 8,
 +        .class_mask = 0xffffff,
 +        .driver_data = AZX_DRIVER_GENERIC | AZX_DCAPS_PRESET_ATI_HDMI },
 +      /* Zhaoxin */
 +      { PCI_VDEVICE(ZHAOXIN, 0x3288), .driver_data = AZX_DRIVER_ZHAOXIN },
 +      { PCI_VDEVICE(ZHAOXIN, 0x9141),
 +       .driver_data = AZX_DRIVER_ZHAOXINHDMI | AZX_DCAPS_POSFIX_LPIB |
 +       AZX_DCAPS_NO_MSI | AZX_DCAPS_NO_64BIT },
 +      { PCI_VDEVICE(ZHAOXIN, 0x9142),
 +       .driver_data = AZX_DRIVER_ZHAOXINHDMI | AZX_DCAPS_POSFIX_LPIB |
 +       AZX_DCAPS_NO_MSI | AZX_DCAPS_NO_64BIT },
 +      { PCI_VDEVICE(ZHAOXIN, 0x9144),
 +       .driver_data = AZX_DRIVER_ZHAOXINHDMI | AZX_DCAPS_POSFIX_LPIB |
 +       AZX_DCAPS_NO_MSI | AZX_DCAPS_NO_64BIT },
 +      { PCI_VDEVICE(ZHAOXIN, 0x9145),
 +       .driver_data = AZX_DRIVER_ZHAOXINHDMI | AZX_DCAPS_POSFIX_LPIB |
 +       AZX_DCAPS_NO_MSI | AZX_DCAPS_NO_64BIT },
 +      { PCI_VDEVICE(ZHAOXIN, 0x9146),
 +       .driver_data = AZX_DRIVER_ZHAOXINHDMI | AZX_DCAPS_POSFIX_LPIB |
 +       AZX_DCAPS_NO_MSI | AZX_DCAPS_NO_64BIT },
 +      /* Loongson HDAudio*/
 +      { PCI_VDEVICE(LOONGSON, PCI_DEVICE_ID_LOONGSON_HDA),
 +        .driver_data = AZX_DRIVER_LOONGSON | AZX_DCAPS_NO_TCSEL },
 +      { PCI_VDEVICE(LOONGSON, PCI_DEVICE_ID_LOONGSON_HDMI),
 +        .driver_data = AZX_DRIVER_LOONGSON | AZX_DCAPS_NO_TCSEL },
 +      { 0, }
 +};
 +MODULE_DEVICE_TABLE(pci, azx_ids);
 +
 +/* pci_driver definition */
 +static struct pci_driver azx_driver = {
 +      .name = KBUILD_MODNAME,
 +      .id_table = azx_ids,
 +      .probe = azx_probe,
 +      .remove = azx_remove,
 +      .shutdown = azx_shutdown,
 +      .driver = {
 +              .pm = pm_ptr(&azx_pm),
 +      },
 +};
 +
 +module_pci_driver(azx_driver);
index e9425213320eae71dbb5297c03195193fb437665,0000000000000000000000000000000000000000..44438c799f9570f1d97c2761884cac72c88f6fe9
mode 100644,000000..100644
--- /dev/null
@@@ -1,208 -1,0 +1,208 @@@
-                   (display_dev->class >> 16) != PCI_BASE_CLASS_DISPLAY)
 +// SPDX-License-Identifier: GPL-2.0-or-later
 +/*
 + *  hdac_i915.c - routines for sync between HD-A core and i915 display driver
 + */
 +
 +#include <linux/init.h>
 +#include <linux/module.h>
 +#include <linux/pci.h>
 +#include <sound/core.h>
 +#include <sound/hdaudio.h>
 +#include <sound/hda_i915.h>
 +#include <sound/hda_register.h>
 +#include <video/nomodeset.h>
 +
 +static int gpu_bind = -1;
 +module_param(gpu_bind, int, 0644);
 +MODULE_PARM_DESC(gpu_bind, "Whether to bind sound component to GPU "
 +                         "(1=always, 0=never, -1=on nomodeset(default))");
 +
 +/**
 + * snd_hdac_i915_set_bclk - Reprogram BCLK for HSW/BDW
 + * @bus: HDA core bus
 + *
 + * Intel HSW/BDW display HDA controller is in GPU. Both its power and link BCLK
 + * depends on GPU. Two Extended Mode registers EM4 (M value) and EM5 (N Value)
 + * are used to convert CDClk (Core Display Clock) to 24MHz BCLK:
 + * BCLK = CDCLK * M / N
 + * The values will be lost when the display power well is disabled and need to
 + * be restored to avoid abnormal playback speed.
 + *
 + * Call this function at initializing and changing power well, as well as
 + * at ELD notifier for the hotplug.
 + */
 +void snd_hdac_i915_set_bclk(struct hdac_bus *bus)
 +{
 +      struct drm_audio_component *acomp = bus->audio_component;
 +      struct pci_dev *pci = to_pci_dev(bus->dev);
 +      int cdclk_freq;
 +      unsigned int bclk_m, bclk_n;
 +
 +      if (!acomp || !acomp->ops || !acomp->ops->get_cdclk_freq)
 +              return; /* only for i915 binding */
 +      if (!HDA_CONTROLLER_IS_HSW(pci))
 +              return; /* only HSW/BDW */
 +
 +      cdclk_freq = acomp->ops->get_cdclk_freq(acomp->dev);
 +      switch (cdclk_freq) {
 +      case 337500:
 +              bclk_m = 16;
 +              bclk_n = 225;
 +              break;
 +
 +      case 450000:
 +      default: /* default CDCLK 450MHz */
 +              bclk_m = 4;
 +              bclk_n = 75;
 +              break;
 +
 +      case 540000:
 +              bclk_m = 4;
 +              bclk_n = 90;
 +              break;
 +
 +      case 675000:
 +              bclk_m = 8;
 +              bclk_n = 225;
 +              break;
 +      }
 +
 +      snd_hdac_chip_writew(bus, HSW_EM4, bclk_m);
 +      snd_hdac_chip_writew(bus, HSW_EM5, bclk_n);
 +}
 +EXPORT_SYMBOL_GPL(snd_hdac_i915_set_bclk);
 +
 +/* returns true if the devices can be connected for audio */
 +static bool connectivity_check(struct pci_dev *i915, struct pci_dev *hdac)
 +{
 +      struct pci_bus *bus_a = i915->bus, *bus_b = hdac->bus;
 +
 +      /* directly connected on the same bus */
 +      if (bus_a == bus_b)
 +              return true;
 +
 +      bus_a = bus_a->parent;
 +      bus_b = bus_b->parent;
 +
 +      /* connected via parent bus (may be NULL!) */
 +      if (bus_a == bus_b)
 +              return true;
 +
 +      if (!bus_a || !bus_b)
 +              return false;
 +
 +      /*
 +       * on i915 discrete GPUs with embedded HDA audio, the two
 +       * devices are connected via 2nd level PCI bridge
 +       */
 +      bus_a = bus_a->parent;
 +      bus_b = bus_b->parent;
 +      if (bus_a && bus_a == bus_b)
 +              return true;
 +
 +      return false;
 +}
 +
 +static int i915_component_master_match(struct device *dev, int subcomponent,
 +                                     void *data)
 +{
 +      struct pci_dev *hdac_pci, *i915_pci;
 +      struct hdac_bus *bus = data;
 +
 +      if (!dev_is_pci(dev))
 +              return 0;
 +
 +      hdac_pci = to_pci_dev(bus->dev);
 +      i915_pci = to_pci_dev(dev);
 +
 +      if ((!strcmp(dev->driver->name, "i915") ||
 +               !strcmp(dev->driver->name, "xe")) &&
 +          subcomponent == I915_COMPONENT_AUDIO &&
 +          connectivity_check(i915_pci, hdac_pci))
 +              return 1;
 +
 +      return 0;
 +}
 +
 +/* check whether Intel graphics is present and reachable */
 +static int i915_gfx_present(struct pci_dev *hdac_pci)
 +{
 +      /* List of known platforms with no i915 support. */
 +      static const struct pci_device_id denylist[] = {
 +              /* CNL */
 +              { PCI_DEVICE(PCI_VENDOR_ID_INTEL, 0x5a40), 0x030000, 0xff0000 },
 +              { PCI_DEVICE(PCI_VENDOR_ID_INTEL, 0x5a41), 0x030000, 0xff0000 },
 +              { PCI_DEVICE(PCI_VENDOR_ID_INTEL, 0x5a42), 0x030000, 0xff0000 },
 +              { PCI_DEVICE(PCI_VENDOR_ID_INTEL, 0x5a44), 0x030000, 0xff0000 },
 +              { PCI_DEVICE(PCI_VENDOR_ID_INTEL, 0x5a49), 0x030000, 0xff0000 },
 +              { PCI_DEVICE(PCI_VENDOR_ID_INTEL, 0x5a4a), 0x030000, 0xff0000 },
 +              { PCI_DEVICE(PCI_VENDOR_ID_INTEL, 0x5a4c), 0x030000, 0xff0000 },
 +              { PCI_DEVICE(PCI_VENDOR_ID_INTEL, 0x5a50), 0x030000, 0xff0000 },
 +              { PCI_DEVICE(PCI_VENDOR_ID_INTEL, 0x5a51), 0x030000, 0xff0000 },
 +              { PCI_DEVICE(PCI_VENDOR_ID_INTEL, 0x5a52), 0x030000, 0xff0000 },
 +              { PCI_DEVICE(PCI_VENDOR_ID_INTEL, 0x5a54), 0x030000, 0xff0000 },
 +              { PCI_DEVICE(PCI_VENDOR_ID_INTEL, 0x5a59), 0x030000, 0xff0000 },
 +              { PCI_DEVICE(PCI_VENDOR_ID_INTEL, 0x5a5a), 0x030000, 0xff0000 },
 +              { PCI_DEVICE(PCI_VENDOR_ID_INTEL, 0x5a5c), 0x030000, 0xff0000 },
 +              /* LKF */
 +              { PCI_DEVICE(PCI_VENDOR_ID_INTEL, 0x9840), 0x030000, 0xff0000 },
 +              {}
 +      };
 +      struct pci_dev *display_dev = NULL;
 +
 +      if (!gpu_bind || (gpu_bind < 0 && video_firmware_drivers_only()))
 +              return false;
 +
 +      for_each_pci_dev(display_dev) {
 +              if (display_dev->vendor != PCI_VENDOR_ID_INTEL ||
++                  !pci_is_display(display_dev))
 +                      continue;
 +
 +              if (pci_match_id(denylist, display_dev))
 +                      continue;
 +
 +              if (connectivity_check(display_dev, hdac_pci)) {
 +                      pci_dev_put(display_dev);
 +                      return true;
 +              }
 +      }
 +
 +      return false;
 +}
 +
 +/**
 + * snd_hdac_i915_init - Initialize i915 audio component
 + * @bus: HDA core bus
 + *
 + * This function is supposed to be used only by a HD-audio controller
 + * driver that needs the interaction with i915 graphics.
 + *
 + * This function initializes and sets up the audio component to communicate
 + * with i915 graphics driver.
 + *
 + * Returns zero for success or a negative error code.
 + */
 +int snd_hdac_i915_init(struct hdac_bus *bus)
 +{
 +      struct drm_audio_component *acomp;
 +      int err;
 +
 +      if (!i915_gfx_present(to_pci_dev(bus->dev)))
 +              return -ENODEV;
 +
 +      err = snd_hdac_acomp_init(bus, NULL,
 +                                i915_component_master_match,
 +                                sizeof(struct i915_audio_component) - sizeof(*acomp));
 +      if (err < 0)
 +              return err;
 +      acomp = bus->audio_component;
 +      if (!acomp)
 +              return -ENODEV;
 +      if (!acomp->ops) {
 +              snd_hdac_acomp_exit(bus);
 +              return dev_err_probe(bus->dev, -EPROBE_DEFER,
 +                                   "couldn't bind with audio component\n");
 +      }
 +      return 0;
 +}
 +EXPORT_SYMBOL_GPL(snd_hdac_i915_init);