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authorLibravatar Linus Torvalds <torvalds@linux-foundation.org>2023-02-21 18:24:12 -0800
committerLibravatar Linus Torvalds <torvalds@linux-foundation.org>2023-02-21 18:24:12 -0800
commit5b7c4cabbb65f5c469464da6c5f614cbd7f730f2 (patch)
treecc5c2d0a898769fd59549594fedb3ee6f84e59a0 /drivers/gpu/drm/i915/display/intel_lpe_audio.c
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Merge tag 'net-next-6.3' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-nextgrafted
Pull networking updates from Jakub Kicinski: "Core: - Add dedicated kmem_cache for typical/small skb->head, avoid having to access struct page at kfree time, and improve memory use. - Introduce sysctl to set default RPS configuration for new netdevs. - Define Netlink protocol specification format which can be used to describe messages used by each family and auto-generate parsers. Add tools for generating kernel data structures and uAPI headers. - Expose all net/core sysctls inside netns. - Remove 4s sleep in netpoll if carrier is instantly detected on boot. - Add configurable limit of MDB entries per port, and port-vlan. - Continue populating drop reasons throughout the stack. - Retire a handful of legacy Qdiscs and classifiers. Protocols: - Support IPv4 big TCP (TSO frames larger than 64kB). - Add IP_LOCAL_PORT_RANGE socket option, to control local port range on socket by socket basis. - Track and report in procfs number of MPTCP sockets used. - Support mixing IPv4 and IPv6 flows in the in-kernel MPTCP path manager. - IPv6: don't check net.ipv6.route.max_size and rely on garbage collection to free memory (similarly to IPv4). - Support Penultimate Segment Pop (PSP) flavor in SRv6 (RFC8986). - ICMP: add per-rate limit counters. - Add support for user scanning requests in ieee802154. - Remove static WEP support. - Support minimal Wi-Fi 7 Extremely High Throughput (EHT) rate reporting. - WiFi 7 EHT channel puncturing support (client & AP). BPF: - Add a rbtree data structure following the "next-gen data structure" precedent set by recently added linked list, that is, by using kfunc + kptr instead of adding a new BPF map type. - Expose XDP hints via kfuncs with initial support for RX hash and timestamp metadata. - Add BPF_F_NO_TUNNEL_KEY extension to bpf_skb_set_tunnel_key to better support decap on GRE tunnel devices not operating in collect metadata. - Improve x86 JIT's codegen for PROBE_MEM runtime error checks. - Remove the need for trace_printk_lock for bpf_trace_printk and bpf_trace_vprintk helpers. - Extend libbpf's bpf_tracing.h support for tracing arguments of kprobes/uprobes and syscall as a special case. - Significantly reduce the search time for module symbols by livepatch and BPF. - Enable cpumasks to be used as kptrs, which is useful for tracing programs tracking which tasks end up running on which CPUs in different time intervals. - Add support for BPF trampoline on s390x and riscv64. - Add capability to export the XDP features supported by the NIC. - Add __bpf_kfunc tag for marking kernel functions as kfuncs. - Add cgroup.memory=nobpf kernel parameter option to disable BPF memory accounting for container environments. Netfilter: - Remove the CLUSTERIP target. It has been marked as obsolete for years, and we still have WARN splats wrt races of the out-of-band /proc interface installed by this target. - Add 'destroy' commands to nf_tables. They are identical to the existing 'delete' commands, but do not return an error if the referenced object (set, chain, rule...) did not exist. Driver API: - Improve cpumask_local_spread() locality to help NICs set the right IRQ affinity on AMD platforms. - Separate C22 and C45 MDIO bus transactions more clearly. - Introduce new DCB table to control DSCP rewrite on egress. - Support configuration of Physical Layer Collision Avoidance (PLCA) Reconciliation Sublayer (RS) (802.3cg-2019). Modern version of shared medium Ethernet. - Support for MAC Merge layer (IEEE 802.3-2018 clause 99). Allowing preemption of low priority frames by high priority frames. - Add support for controlling MACSec offload using netlink SET. - Rework devlink instance refcounts to allow registration and de-registration under the instance lock. Split the code into multiple files, drop some of the unnecessarily granular locks and factor out common parts of netlink operation handling. - Add TX frame aggregation parameters (for USB drivers). - Add a new attr TCA_EXT_WARN_MSG to report TC (offload) warning messages with notifications for debug. - Allow offloading of UDP NEW connections via act_ct. - Add support for per action HW stats in TC. - Support hardware miss to TC action (continue processing in SW from a specific point in the action chain). - Warn if old Wireless Extension user space interface is used with modern cfg80211/mac80211 drivers. Do not support Wireless Extensions for Wi-Fi 7 devices at all. Everyone should switch to using nl80211 interface instead. - Improve the CAN bit timing configuration. Use extack to return error messages directly to user space, update the SJW handling, including the definition of a new default value that will benefit CAN-FD controllers, by increasing their oscillator tolerance. New hardware / drivers: - Ethernet: - nVidia BlueField-3 support (control traffic driver) - Ethernet support for imx93 SoCs - Motorcomm yt8531 gigabit Ethernet PHY - onsemi NCN26000 10BASE-T1S PHY (with support for PLCA) - Microchip LAN8841 PHY (incl. cable diagnostics and PTP) - Amlogic gxl MDIO mux - WiFi: - RealTek RTL8188EU (rtl8xxxu) - Qualcomm Wi-Fi 7 devices (ath12k) - CAN: - Renesas R-Car V4H Drivers: - Bluetooth: - Set Per Platform Antenna Gain (PPAG) for Intel controllers. - Ethernet NICs: - Intel (1G, igc): - support TSN / Qbv / packet scheduling features of i226 model - Intel (100G, ice): - use GNSS subsystem instead of TTY - multi-buffer XDP support - extend support for GPIO pins to E823 devices - nVidia/Mellanox: - update the shared buffer configuration on PFC commands - implement PTP adjphase function for HW offset control - TC support for Geneve and GRE with VF tunnel offload - more efficient crypto key management method - multi-port eswitch support - Netronome/Corigine: - add DCB IEEE support - support IPsec offloading for NFP3800 - Freescale/NXP (enetc): - support XDP_REDIRECT for XDP non-linear buffers - improve reconfig, avoid link flap and waiting for idle - support MAC Merge layer - Other NICs: - sfc/ef100: add basic devlink support for ef100 - ionic: rx_push mode operation (writing descriptors via MMIO) - bnxt: use the auxiliary bus abstraction for RDMA - r8169: disable ASPM and reset bus in case of tx timeout - cpsw: support QSGMII mode for J721e CPSW9G - cpts: support pulse-per-second output - ngbe: add an mdio bus driver - usbnet: optimize usbnet_bh() by avoiding unnecessary queuing - r8152: handle devices with FW with NCM support - amd-xgbe: support 10Mbps, 2.5GbE speeds and rx-adaptation - virtio-net: support multi buffer XDP - virtio/vsock: replace virtio_vsock_pkt with sk_buff - tsnep: XDP support - Ethernet high-speed switches: - nVidia/Mellanox (mlxsw): - add support for latency TLV (in FW control messages) - Microchip (sparx5): - separate explicit and implicit traffic forwarding rules, make the implicit rules always active - add support for egress DSCP rewrite - IS0 VCAP support (Ingress Classification) - IS2 VCAP filters (protos, L3 addrs, L4 ports, flags, ToS etc.) - ES2 VCAP support (Egress Access Control) - support for Per-Stream Filtering and Policing (802.1Q, 8.6.5.1) - Ethernet embedded switches: - Marvell (mv88e6xxx): - add MAB (port auth) offload support - enable PTP receive for mv88e6390 - NXP (ocelot): - support MAC Merge layer - support for the the vsc7512 internal copper phys - Microchip: - lan9303: convert to PHYLINK - lan966x: support TC flower filter statistics - lan937x: PTP support for KSZ9563/KSZ8563 and LAN937x - lan937x: support Credit Based Shaper configuration - ksz9477: support Energy Efficient Ethernet - other: - qca8k: convert to regmap read/write API, use bulk operations - rswitch: Improve TX timestamp accuracy - Intel WiFi (iwlwifi): - EHT (Wi-Fi 7) rate reporting - STEP equalizer support: transfer some STEP (connection to radio on platforms with integrated wifi) related parameters from the BIOS to the firmware. - Qualcomm 802.11ax WiFi (ath11k): - IPQ5018 support - Fine Timing Measurement (FTM) responder role support - channel 177 support - MediaTek WiFi (mt76): - per-PHY LED support - mt7996: EHT (Wi-Fi 7) support - Wireless Ethernet Dispatch (WED) reset support - switch to using page pool allocator - RealTek WiFi (rtw89): - support new version of Bluetooth co-existance - Mobile: - rmnet: support TX aggregation" * tag 'net-next-6.3' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next: (1872 commits) page_pool: add a comment explaining the fragment counter usage net: ethtool: fix __ethtool_dev_mm_supported() implementation ethtool: pse-pd: Fix double word in comments xsk: add linux/vmalloc.h to xsk.c sefltests: netdevsim: wait for devlink instance after netns removal selftest: fib_tests: Always cleanup before exit net/mlx5e: Align IPsec ASO result memory to be as required by hardware net/mlx5e: TC, Set CT miss to the specific ct action instance net/mlx5e: Rename CHAIN_TO_REG to MAPPED_OBJ_TO_REG net/mlx5: Refactor tc miss handling to a single function net/mlx5: Kconfig: Make tc offload depend on tc skb extension net/sched: flower: Support hardware miss to tc action net/sched: flower: Move filter handle initialization earlier net/sched: cls_api: Support hardware miss to tc action net/sched: Rename user cookie and act cookie sfc: fix builds without CONFIG_RTC_LIB sfc: clean up some inconsistent indentings net/mlx4_en: Introduce flexible array to silence overflow warning net: lan966x: Fix possible deadlock inside PTP net/ulp: Remove redundant ->clone() test in inet_clone_ulp(). ...
Diffstat (limited to 'drivers/gpu/drm/i915/display/intel_lpe_audio.c')
-rw-r--r--drivers/gpu/drm/i915/display/intel_lpe_audio.c369
1 files changed, 369 insertions, 0 deletions
diff --git a/drivers/gpu/drm/i915/display/intel_lpe_audio.c b/drivers/gpu/drm/i915/display/intel_lpe_audio.c
new file mode 100644
index 000000000..8aaaef4d7
--- /dev/null
+++ b/drivers/gpu/drm/i915/display/intel_lpe_audio.c
@@ -0,0 +1,369 @@
+/*
+ * Copyright © 2016 Intel Corporation
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the next
+ * paragraph) shall be included in all copies or substantial portions of the
+ * Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
+ * IN THE SOFTWARE.
+ *
+ * Authors:
+ * Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
+ * Jerome Anand <jerome.anand@intel.com>
+ * based on VED patches
+ *
+ */
+
+/**
+ * DOC: LPE Audio integration for HDMI or DP playback
+ *
+ * Motivation:
+ * Atom platforms (e.g. valleyview and cherryTrail) integrates a DMA-based
+ * interface as an alternative to the traditional HDaudio path. While this
+ * mode is unrelated to the LPE aka SST audio engine, the documentation refers
+ * to this mode as LPE so we keep this notation for the sake of consistency.
+ *
+ * The interface is handled by a separate standalone driver maintained in the
+ * ALSA subsystem for simplicity. To minimize the interaction between the two
+ * subsystems, a bridge is setup between the hdmi-lpe-audio and i915:
+ * 1. Create a platform device to share MMIO/IRQ resources
+ * 2. Make the platform device child of i915 device for runtime PM.
+ * 3. Create IRQ chip to forward the LPE audio irqs.
+ * the hdmi-lpe-audio driver probes the lpe audio device and creates a new
+ * sound card
+ *
+ * Threats:
+ * Due to the restriction in Linux platform device model, user need manually
+ * uninstall the hdmi-lpe-audio driver before uninstalling i915 module,
+ * otherwise we might run into use-after-free issues after i915 removes the
+ * platform device: even though hdmi-lpe-audio driver is released, the modules
+ * is still in "installed" status.
+ *
+ * Implementation:
+ * The MMIO/REG platform resources are created according to the registers
+ * specification.
+ * When forwarding LPE audio irqs, the flow control handler selection depends
+ * on the platform, for example on valleyview handle_simple_irq is enough.
+ *
+ */
+
+#include <linux/acpi.h>
+#include <linux/delay.h>
+#include <linux/device.h>
+#include <linux/irq.h>
+#include <linux/pci.h>
+#include <linux/platform_device.h>
+#include <linux/pm_runtime.h>
+
+#include <drm/intel_lpe_audio.h>
+
+#include "i915_drv.h"
+#include "i915_irq.h"
+#include "i915_reg.h"
+#include "intel_de.h"
+#include "intel_lpe_audio.h"
+#include "intel_pci_config.h"
+
+#define HAS_LPE_AUDIO(dev_priv) ((dev_priv)->display.audio.lpe.platdev != NULL)
+
+static struct platform_device *
+lpe_audio_platdev_create(struct drm_i915_private *dev_priv)
+{
+ struct pci_dev *pdev = to_pci_dev(dev_priv->drm.dev);
+ struct platform_device_info pinfo = {};
+ struct resource *rsc;
+ struct platform_device *platdev;
+ struct intel_hdmi_lpe_audio_pdata *pdata;
+
+ pdata = kzalloc(sizeof(*pdata), GFP_KERNEL);
+ if (!pdata)
+ return ERR_PTR(-ENOMEM);
+
+ rsc = kcalloc(2, sizeof(*rsc), GFP_KERNEL);
+ if (!rsc) {
+ kfree(pdata);
+ return ERR_PTR(-ENOMEM);
+ }
+
+ rsc[0].start = rsc[0].end = dev_priv->display.audio.lpe.irq;
+ rsc[0].flags = IORESOURCE_IRQ;
+ rsc[0].name = "hdmi-lpe-audio-irq";
+
+ rsc[1].start = pci_resource_start(pdev, GEN4_GTTMMADR_BAR) +
+ I915_HDMI_LPE_AUDIO_BASE;
+ rsc[1].end = pci_resource_start(pdev, GEN4_GTTMMADR_BAR) +
+ I915_HDMI_LPE_AUDIO_BASE + I915_HDMI_LPE_AUDIO_SIZE - 1;
+ rsc[1].flags = IORESOURCE_MEM;
+ rsc[1].name = "hdmi-lpe-audio-mmio";
+
+ pinfo.parent = dev_priv->drm.dev;
+ pinfo.name = "hdmi-lpe-audio";
+ pinfo.id = -1;
+ pinfo.res = rsc;
+ pinfo.num_res = 2;
+ pinfo.data = pdata;
+ pinfo.size_data = sizeof(*pdata);
+ pinfo.dma_mask = DMA_BIT_MASK(32);
+
+ pdata->num_pipes = INTEL_NUM_PIPES(dev_priv);
+ pdata->num_ports = IS_CHERRYVIEW(dev_priv) ? 3 : 2; /* B,C,D or B,C */
+ pdata->port[0].pipe = -1;
+ pdata->port[1].pipe = -1;
+ pdata->port[2].pipe = -1;
+ spin_lock_init(&pdata->lpe_audio_slock);
+
+ platdev = platform_device_register_full(&pinfo);
+ kfree(rsc);
+ kfree(pdata);
+
+ if (IS_ERR(platdev)) {
+ drm_err(&dev_priv->drm,
+ "Failed to allocate LPE audio platform device\n");
+ return platdev;
+ }
+
+ pm_runtime_no_callbacks(&platdev->dev);
+
+ return platdev;
+}
+
+static void lpe_audio_platdev_destroy(struct drm_i915_private *dev_priv)
+{
+ /* XXX Note that platform_device_register_full() allocates a dma_mask
+ * and never frees it. We can't free it here as we cannot guarantee
+ * this is the last reference (i.e. that the dma_mask will not be
+ * used after our unregister). So ee choose to leak the sizeof(u64)
+ * allocation here - it should be fixed in the platform_device rather
+ * than us fiddle with its internals.
+ */
+
+ platform_device_unregister(dev_priv->display.audio.lpe.platdev);
+}
+
+static void lpe_audio_irq_unmask(struct irq_data *d)
+{
+}
+
+static void lpe_audio_irq_mask(struct irq_data *d)
+{
+}
+
+static struct irq_chip lpe_audio_irqchip = {
+ .name = "hdmi_lpe_audio_irqchip",
+ .irq_mask = lpe_audio_irq_mask,
+ .irq_unmask = lpe_audio_irq_unmask,
+};
+
+static int lpe_audio_irq_init(struct drm_i915_private *dev_priv)
+{
+ int irq = dev_priv->display.audio.lpe.irq;
+
+ drm_WARN_ON(&dev_priv->drm, !intel_irqs_enabled(dev_priv));
+ irq_set_chip_and_handler_name(irq,
+ &lpe_audio_irqchip,
+ handle_simple_irq,
+ "hdmi_lpe_audio_irq_handler");
+
+ return irq_set_chip_data(irq, dev_priv);
+}
+
+static bool lpe_audio_detect(struct drm_i915_private *dev_priv)
+{
+ int lpe_present = false;
+
+ if (IS_VALLEYVIEW(dev_priv) || IS_CHERRYVIEW(dev_priv)) {
+ static const struct pci_device_id atom_hdaudio_ids[] = {
+ /* Baytrail */
+ {PCI_DEVICE(PCI_VENDOR_ID_INTEL, 0x0f04)},
+ /* Braswell */
+ {PCI_DEVICE(PCI_VENDOR_ID_INTEL, 0x2284)},
+ {}
+ };
+
+ if (!pci_dev_present(atom_hdaudio_ids)) {
+ drm_info(&dev_priv->drm,
+ "HDaudio controller not detected, using LPE audio instead\n");
+ lpe_present = true;
+ }
+ }
+ return lpe_present;
+}
+
+static int lpe_audio_setup(struct drm_i915_private *dev_priv)
+{
+ int ret;
+
+ dev_priv->display.audio.lpe.irq = irq_alloc_desc(0);
+ if (dev_priv->display.audio.lpe.irq < 0) {
+ drm_err(&dev_priv->drm, "Failed to allocate IRQ desc: %d\n",
+ dev_priv->display.audio.lpe.irq);
+ ret = dev_priv->display.audio.lpe.irq;
+ goto err;
+ }
+
+ drm_dbg(&dev_priv->drm, "irq = %d\n", dev_priv->display.audio.lpe.irq);
+
+ ret = lpe_audio_irq_init(dev_priv);
+
+ if (ret) {
+ drm_err(&dev_priv->drm,
+ "Failed to initialize irqchip for lpe audio: %d\n",
+ ret);
+ goto err_free_irq;
+ }
+
+ dev_priv->display.audio.lpe.platdev = lpe_audio_platdev_create(dev_priv);
+
+ if (IS_ERR(dev_priv->display.audio.lpe.platdev)) {
+ ret = PTR_ERR(dev_priv->display.audio.lpe.platdev);
+ drm_err(&dev_priv->drm,
+ "Failed to create lpe audio platform device: %d\n",
+ ret);
+ goto err_free_irq;
+ }
+
+ /* enable chicken bit; at least this is required for Dell Wyse 3040
+ * with DP outputs (but only sometimes by some reason!)
+ */
+ intel_de_write(dev_priv, VLV_AUD_CHICKEN_BIT_REG,
+ VLV_CHICKEN_BIT_DBG_ENABLE);
+
+ return 0;
+err_free_irq:
+ irq_free_desc(dev_priv->display.audio.lpe.irq);
+err:
+ dev_priv->display.audio.lpe.irq = -1;
+ dev_priv->display.audio.lpe.platdev = NULL;
+ return ret;
+}
+
+/**
+ * intel_lpe_audio_irq_handler() - forwards the LPE audio irq
+ * @dev_priv: the i915 drm device private data
+ *
+ * the LPE Audio irq is forwarded to the irq handler registered by LPE audio
+ * driver.
+ */
+void intel_lpe_audio_irq_handler(struct drm_i915_private *dev_priv)
+{
+ int ret;
+
+ if (!HAS_LPE_AUDIO(dev_priv))
+ return;
+
+ ret = generic_handle_irq(dev_priv->display.audio.lpe.irq);
+ if (ret)
+ drm_err_ratelimited(&dev_priv->drm,
+ "error handling LPE audio irq: %d\n", ret);
+}
+
+/**
+ * intel_lpe_audio_init() - detect and setup the bridge between HDMI LPE Audio
+ * driver and i915
+ * @dev_priv: the i915 drm device private data
+ *
+ * Return: 0 if successful. non-zero if detection or
+ * llocation/initialization fails
+ */
+int intel_lpe_audio_init(struct drm_i915_private *dev_priv)
+{
+ int ret = -ENODEV;
+
+ if (lpe_audio_detect(dev_priv)) {
+ ret = lpe_audio_setup(dev_priv);
+ if (ret < 0)
+ drm_err(&dev_priv->drm,
+ "failed to setup LPE Audio bridge\n");
+ }
+ return ret;
+}
+
+/**
+ * intel_lpe_audio_teardown() - destroy the bridge between HDMI LPE
+ * audio driver and i915
+ * @dev_priv: the i915 drm device private data
+ *
+ * release all the resources for LPE audio <-> i915 bridge.
+ */
+void intel_lpe_audio_teardown(struct drm_i915_private *dev_priv)
+{
+ if (!HAS_LPE_AUDIO(dev_priv))
+ return;
+
+ lpe_audio_platdev_destroy(dev_priv);
+
+ irq_free_desc(dev_priv->display.audio.lpe.irq);
+
+ dev_priv->display.audio.lpe.irq = -1;
+ dev_priv->display.audio.lpe.platdev = NULL;
+}
+
+/**
+ * intel_lpe_audio_notify() - notify lpe audio event
+ * audio driver and i915
+ * @dev_priv: the i915 drm device private data
+ * @pipe: pipe
+ * @port: port
+ * @eld : ELD data
+ * @ls_clock: Link symbol clock in kHz
+ * @dp_output: Driving a DP output?
+ *
+ * Notify lpe audio driver of eld change.
+ */
+void intel_lpe_audio_notify(struct drm_i915_private *dev_priv,
+ enum pipe pipe, enum port port,
+ const void *eld, int ls_clock, bool dp_output)
+{
+ unsigned long irqflags;
+ struct intel_hdmi_lpe_audio_pdata *pdata;
+ struct intel_hdmi_lpe_audio_port_pdata *ppdata;
+ u32 audio_enable;
+
+ if (!HAS_LPE_AUDIO(dev_priv))
+ return;
+
+ pdata = dev_get_platdata(&dev_priv->display.audio.lpe.platdev->dev);
+ ppdata = &pdata->port[port - PORT_B];
+
+ spin_lock_irqsave(&pdata->lpe_audio_slock, irqflags);
+
+ audio_enable = intel_de_read(dev_priv, VLV_AUD_PORT_EN_DBG(port));
+
+ if (eld != NULL) {
+ memcpy(ppdata->eld, eld, HDMI_MAX_ELD_BYTES);
+ ppdata->pipe = pipe;
+ ppdata->ls_clock = ls_clock;
+ ppdata->dp_output = dp_output;
+
+ /* Unmute the amp for both DP and HDMI */
+ intel_de_write(dev_priv, VLV_AUD_PORT_EN_DBG(port),
+ audio_enable & ~VLV_AMP_MUTE);
+ } else {
+ memset(ppdata->eld, 0, HDMI_MAX_ELD_BYTES);
+ ppdata->pipe = -1;
+ ppdata->ls_clock = 0;
+ ppdata->dp_output = false;
+
+ /* Mute the amp for both DP and HDMI */
+ intel_de_write(dev_priv, VLV_AUD_PORT_EN_DBG(port),
+ audio_enable | VLV_AMP_MUTE);
+ }
+
+ if (pdata->notify_audio_lpe)
+ pdata->notify_audio_lpe(dev_priv->display.audio.lpe.platdev, port - PORT_B);
+
+ spin_unlock_irqrestore(&pdata->lpe_audio_slock, irqflags);
+}