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().
  ...

1 files changed, 610 insertions, 0 deletions

diff --git a/drivers/media/platform/mediatek/vcodec/mtk_vcodec_dec_stateful.c b/drivers/media/platform/mediatek/vcodec/mtk_vcodec_dec_stateful.c
new file mode 100644
index 000000000..035c86e78
--- /dev/null
+++ b/drivers/media/platform/mediatek/vcodec/mtk_vcodec_dec_stateful.c
@@ -0,0 +1,610 @@
+// SPDX-License-Identifier: GPL-2.0
+
+#include <media/v4l2-event.h>
+#include <media/v4l2-mem2mem.h>
+#include <media/videobuf2-dma-contig.h>
+
+#include "mtk_vcodec_drv.h"
+#include "mtk_vcodec_dec.h"
+#include "mtk_vcodec_intr.h"
+#include "mtk_vcodec_util.h"
+#include "mtk_vcodec_dec_pm.h"
+#include "vdec_drv_if.h"
+
+static const struct mtk_video_fmt mtk_video_formats[] = {
+	{
+		.fourcc = V4L2_PIX_FMT_H264,
+		.type = MTK_FMT_DEC,
+		.num_planes = 1,
+		.flags = V4L2_FMT_FLAG_DYN_RESOLUTION,
+		.frmsize = { MTK_VDEC_MIN_W, MTK_VDEC_MAX_W, 16,
+			     MTK_VDEC_MIN_H, MTK_VDEC_MAX_H, 16 },
+	},
+	{
+		.fourcc = V4L2_PIX_FMT_VP8,
+		.type = MTK_FMT_DEC,
+		.num_planes = 1,
+		.flags = V4L2_FMT_FLAG_DYN_RESOLUTION,
+		.frmsize = { MTK_VDEC_MIN_W, MTK_VDEC_MAX_W, 16,
+			     MTK_VDEC_MIN_H, MTK_VDEC_MAX_H, 16 },
+	},
+	{
+		.fourcc = V4L2_PIX_FMT_VP9,
+		.type = MTK_FMT_DEC,
+		.num_planes = 1,
+		.flags = V4L2_FMT_FLAG_DYN_RESOLUTION,
+		.frmsize = { MTK_VDEC_MIN_W, MTK_VDEC_MAX_W, 16,
+			     MTK_VDEC_MIN_H, MTK_VDEC_MAX_H, 16 },
+	},
+	{
+		.fourcc = V4L2_PIX_FMT_MT21C,
+		.type = MTK_FMT_FRAME,
+		.num_planes = 2,
+	},
+};
+
+static const unsigned int num_supported_formats =
+	ARRAY_SIZE(mtk_video_formats);
+
+#define DEFAULT_OUT_FMT_IDX 0
+#define DEFAULT_CAP_FMT_IDX 3
+
+/*
+ * This function tries to clean all display buffers, the buffers will return
+ * in display order.
+ * Note the buffers returned from codec driver may still be in driver's
+ * reference list.
+ */
+static struct vb2_buffer *get_display_buffer(struct mtk_vcodec_ctx *ctx)
+{
+	struct vdec_fb *disp_frame_buffer = NULL;
+	struct mtk_video_dec_buf *dstbuf;
+	struct vb2_v4l2_buffer *vb;
+
+	mtk_v4l2_debug(3, "[%d]", ctx->id);
+	if (vdec_if_get_param(ctx, GET_PARAM_DISP_FRAME_BUFFER,
+			      &disp_frame_buffer)) {
+		mtk_v4l2_err("[%d]Cannot get param : GET_PARAM_DISP_FRAME_BUFFER", ctx->id);
+		return NULL;
+	}
+
+	if (!disp_frame_buffer) {
+		mtk_v4l2_debug(3, "No display frame buffer");
+		return NULL;
+	}
+
+	dstbuf = container_of(disp_frame_buffer, struct mtk_video_dec_buf,
+			      frame_buffer);
+	vb = &dstbuf->m2m_buf.vb;
+	mutex_lock(&ctx->lock);
+	if (dstbuf->used) {
+		mtk_v4l2_debug(2, "[%d]status=%x queue id=%d to done_list %d",
+			       ctx->id, disp_frame_buffer->status,
+			       vb->vb2_buf.index, dstbuf->queued_in_vb2);
+
+		v4l2_m2m_buf_done(vb, VB2_BUF_STATE_DONE);
+		ctx->decoded_frame_cnt++;
+	}
+	mutex_unlock(&ctx->lock);
+	return &vb->vb2_buf;
+}
+
+/*
+ * This function tries to clean all capture buffers that are not used as
+ * reference buffers by codec driver any more
+ * In this case, we need re-queue buffer to vb2 buffer if user space
+ * already returns this buffer to v4l2 or this buffer is just the output of
+ * previous sps/pps/resolution change decode, or do nothing if user
+ * space still owns this buffer
+ */
+static struct vb2_buffer *get_free_buffer(struct mtk_vcodec_ctx *ctx)
+{
+	struct mtk_video_dec_buf *dstbuf;
+	struct vdec_fb *free_frame_buffer = NULL;
+	struct vb2_v4l2_buffer *vb;
+
+	if (vdec_if_get_param(ctx, GET_PARAM_FREE_FRAME_BUFFER,
+			      &free_frame_buffer)) {
+		mtk_v4l2_err("[%d] Error!! Cannot get param", ctx->id);
+		return NULL;
+	}
+	if (!free_frame_buffer) {
+		mtk_v4l2_debug(3, " No free frame buffer");
+		return NULL;
+	}
+
+	mtk_v4l2_debug(3, "[%d] tmp_frame_addr = 0x%p", ctx->id,
+		       free_frame_buffer);
+
+	dstbuf = container_of(free_frame_buffer, struct mtk_video_dec_buf,
+			      frame_buffer);
+	vb = &dstbuf->m2m_buf.vb;
+
+	mutex_lock(&ctx->lock);
+	if (dstbuf->used) {
+		if (dstbuf->queued_in_vb2 && dstbuf->queued_in_v4l2 &&
+		    free_frame_buffer->status == FB_ST_FREE) {
+			/*
+			 * After decode sps/pps or non-display buffer, we don't
+			 * need to return capture buffer to user space, but
+			 * just re-queue this capture buffer to vb2 queue.
+			 * This reduce overheads that dq/q unused capture
+			 * buffer. In this case, queued_in_vb2 = true.
+			 */
+			mtk_v4l2_debug(2, "[%d]status=%x queue id=%d to rdy_queue %d",
+				       ctx->id, free_frame_buffer->status,
+				       vb->vb2_buf.index, dstbuf->queued_in_vb2);
+			v4l2_m2m_buf_queue(ctx->m2m_ctx, vb);
+		} else if (!dstbuf->queued_in_vb2 && dstbuf->queued_in_v4l2) {
+			/*
+			 * If buffer in v4l2 driver but not in vb2 queue yet,
+			 * and we get this buffer from free_list, it means
+			 * that codec driver do not use this buffer as
+			 * reference buffer anymore. We should q buffer to vb2
+			 * queue, so later work thread could get this buffer
+			 * for decode. In this case, queued_in_vb2 = false
+			 * means this buffer is not from previous decode
+			 * output.
+			 */
+			mtk_v4l2_debug(2,
+				       "[%d]status=%x queue id=%d to rdy_queue",
+				       ctx->id, free_frame_buffer->status,
+				       vb->vb2_buf.index);
+			v4l2_m2m_buf_queue(ctx->m2m_ctx, vb);
+			dstbuf->queued_in_vb2 = true;
+		} else {
+			/*
+			 * Codec driver do not need to reference this capture
+			 * buffer and this buffer is not in v4l2 driver.
+			 * Then we don't need to do any thing, just add log when
+			 * we need to debug buffer flow.
+			 * When this buffer q from user space, it could
+			 * directly q to vb2 buffer
+			 */
+			mtk_v4l2_debug(3, "[%d]status=%x err queue id=%d %d %d",
+				       ctx->id, free_frame_buffer->status,
+				       vb->vb2_buf.index, dstbuf->queued_in_vb2,
+				       dstbuf->queued_in_v4l2);
+		}
+		dstbuf->used = false;
+	}
+	mutex_unlock(&ctx->lock);
+	return &vb->vb2_buf;
+}
+
+static void clean_display_buffer(struct mtk_vcodec_ctx *ctx)
+{
+	while (get_display_buffer(ctx))
+		;
+}
+
+static void clean_free_buffer(struct mtk_vcodec_ctx *ctx)
+{
+	while (get_free_buffer(ctx))
+		;
+}
+
+static void mtk_vdec_queue_res_chg_event(struct mtk_vcodec_ctx *ctx)
+{
+	static const struct v4l2_event ev_src_ch = {
+		.type = V4L2_EVENT_SOURCE_CHANGE,
+		.u.src_change.changes = V4L2_EVENT_SRC_CH_RESOLUTION,
+	};
+
+	mtk_v4l2_debug(1, "[%d]", ctx->id);
+	v4l2_event_queue_fh(&ctx->fh, &ev_src_ch);
+}
+
+static int mtk_vdec_flush_decoder(struct mtk_vcodec_ctx *ctx)
+{
+	bool res_chg;
+	int ret;
+
+	ret = vdec_if_decode(ctx, NULL, NULL, &res_chg);
+	if (ret)
+		mtk_v4l2_err("DecodeFinal failed, ret=%d", ret);
+
+	clean_display_buffer(ctx);
+	clean_free_buffer(ctx);
+
+	return 0;
+}
+
+static void mtk_vdec_update_fmt(struct mtk_vcodec_ctx *ctx,
+				unsigned int pixelformat)
+{
+	const struct mtk_video_fmt *fmt;
+	struct mtk_q_data *dst_q_data;
+	unsigned int k;
+
+	dst_q_data = &ctx->q_data[MTK_Q_DATA_DST];
+	for (k = 0; k < num_supported_formats; k++) {
+		fmt = &mtk_video_formats[k];
+		if (fmt->fourcc == pixelformat) {
+			mtk_v4l2_debug(1, "Update cap fourcc(%d -> %d)",
+				       dst_q_data->fmt->fourcc, pixelformat);
+			dst_q_data->fmt = fmt;
+			return;
+		}
+	}
+
+	mtk_v4l2_err("Cannot get fourcc(%d), using init value", pixelformat);
+}
+
+static int mtk_vdec_pic_info_update(struct mtk_vcodec_ctx *ctx)
+{
+	unsigned int dpbsize = 0;
+	int ret;
+
+	if (vdec_if_get_param(ctx, GET_PARAM_PIC_INFO,
+			      &ctx->last_decoded_picinfo)) {
+		mtk_v4l2_err("[%d]Error!! Cannot get param : GET_PARAM_PICTURE_INFO ERR", ctx->id);
+		return -EINVAL;
+	}
+
+	if (ctx->last_decoded_picinfo.pic_w == 0 ||
+	    ctx->last_decoded_picinfo.pic_h == 0 ||
+	    ctx->last_decoded_picinfo.buf_w == 0 ||
+	    ctx->last_decoded_picinfo.buf_h == 0) {
+		mtk_v4l2_err("Cannot get correct pic info");
+		return -EINVAL;
+	}
+
+	if (ctx->last_decoded_picinfo.cap_fourcc != ctx->picinfo.cap_fourcc &&
+	    ctx->picinfo.cap_fourcc != 0)
+		mtk_vdec_update_fmt(ctx, ctx->picinfo.cap_fourcc);
+
+	if (ctx->last_decoded_picinfo.pic_w == ctx->picinfo.pic_w ||
+	    ctx->last_decoded_picinfo.pic_h == ctx->picinfo.pic_h)
+		return 0;
+
+	mtk_v4l2_debug(1, "[%d]-> new(%d,%d), old(%d,%d), real(%d,%d)", ctx->id,
+		       ctx->last_decoded_picinfo.pic_w,
+		       ctx->last_decoded_picinfo.pic_h, ctx->picinfo.pic_w,
+		       ctx->picinfo.pic_h, ctx->last_decoded_picinfo.buf_w,
+		       ctx->last_decoded_picinfo.buf_h);
+
+	ret = vdec_if_get_param(ctx, GET_PARAM_DPB_SIZE, &dpbsize);
+	if (dpbsize == 0)
+		mtk_v4l2_err("Incorrect dpb size, ret=%d", ret);
+
+	ctx->dpb_size = dpbsize;
+
+	return ret;
+}
+
+static void mtk_vdec_worker(struct work_struct *work)
+{
+	struct mtk_vcodec_ctx *ctx =
+		container_of(work, struct mtk_vcodec_ctx, decode_work);
+	struct mtk_vcodec_dev *dev = ctx->dev;
+	struct vb2_v4l2_buffer *src_buf, *dst_buf;
+	struct mtk_vcodec_mem buf;
+	struct vdec_fb *pfb;
+	bool res_chg = false;
+	int ret;
+	struct mtk_video_dec_buf *dst_buf_info, *src_buf_info;
+
+	src_buf = v4l2_m2m_next_src_buf(ctx->m2m_ctx);
+	if (!src_buf) {
+		v4l2_m2m_job_finish(dev->m2m_dev_dec, ctx->m2m_ctx);
+		mtk_v4l2_debug(1, "[%d] src_buf empty!!", ctx->id);
+		return;
+	}
+
+	dst_buf = v4l2_m2m_next_dst_buf(ctx->m2m_ctx);
+	if (!dst_buf) {
+		v4l2_m2m_job_finish(dev->m2m_dev_dec, ctx->m2m_ctx);
+		mtk_v4l2_debug(1, "[%d] dst_buf empty!!", ctx->id);
+		return;
+	}
+
+	dst_buf_info =
+		container_of(dst_buf, struct mtk_video_dec_buf, m2m_buf.vb);
+
+	pfb = &dst_buf_info->frame_buffer;
+	pfb->base_y.va = vb2_plane_vaddr(&dst_buf->vb2_buf, 0);
+	pfb->base_y.dma_addr =
+		vb2_dma_contig_plane_dma_addr(&dst_buf->vb2_buf, 0);
+	pfb->base_y.size = ctx->picinfo.fb_sz[0];
+
+	pfb->base_c.va = vb2_plane_vaddr(&dst_buf->vb2_buf, 1);
+	pfb->base_c.dma_addr =
+		vb2_dma_contig_plane_dma_addr(&dst_buf->vb2_buf, 1);
+	pfb->base_c.size = ctx->picinfo.fb_sz[1];
+	pfb->status = 0;
+	mtk_v4l2_debug(3, "===>[%d] vdec_if_decode() ===>", ctx->id);
+
+	mtk_v4l2_debug(3,
+		       "id=%d Framebuf  pfb=%p VA=%p Y_DMA=%pad C_DMA=%pad Size=%zx",
+		       dst_buf->vb2_buf.index, pfb, pfb->base_y.va,
+		       &pfb->base_y.dma_addr, &pfb->base_c.dma_addr, pfb->base_y.size);
+
+	if (src_buf == &ctx->empty_flush_buf.vb) {
+		mtk_v4l2_debug(1, "Got empty flush input buffer.");
+		src_buf = v4l2_m2m_src_buf_remove(ctx->m2m_ctx);
+
+		/* update dst buf status */
+		dst_buf = v4l2_m2m_dst_buf_remove(ctx->m2m_ctx);
+		mutex_lock(&ctx->lock);
+		dst_buf_info->used = false;
+		mutex_unlock(&ctx->lock);
+
+		vdec_if_decode(ctx, NULL, NULL, &res_chg);
+		clean_display_buffer(ctx);
+		vb2_set_plane_payload(&dst_buf->vb2_buf, 0, 0);
+		if (ctx->q_data[MTK_Q_DATA_DST].fmt->num_planes == 2)
+			vb2_set_plane_payload(&dst_buf->vb2_buf, 1, 0);
+		dst_buf->flags |= V4L2_BUF_FLAG_LAST;
+		v4l2_m2m_buf_done(dst_buf, VB2_BUF_STATE_DONE);
+		clean_free_buffer(ctx);
+		v4l2_m2m_job_finish(dev->m2m_dev_dec, ctx->m2m_ctx);
+		return;
+	}
+
+	src_buf_info =
+		container_of(src_buf, struct mtk_video_dec_buf, m2m_buf.vb);
+
+	buf.va = vb2_plane_vaddr(&src_buf->vb2_buf, 0);
+	buf.dma_addr = vb2_dma_contig_plane_dma_addr(&src_buf->vb2_buf, 0);
+	buf.size = (size_t)src_buf->vb2_buf.planes[0].bytesused;
+	if (!buf.va) {
+		v4l2_m2m_job_finish(dev->m2m_dev_dec, ctx->m2m_ctx);
+		mtk_v4l2_err("[%d] id=%d src_addr is NULL!!", ctx->id,
+			     src_buf->vb2_buf.index);
+		return;
+	}
+	mtk_v4l2_debug(3, "[%d] Bitstream VA=%p DMA=%pad Size=%zx vb=%p",
+		       ctx->id, buf.va, &buf.dma_addr, buf.size, src_buf);
+	dst_buf->vb2_buf.timestamp = src_buf->vb2_buf.timestamp;
+	dst_buf->timecode = src_buf->timecode;
+	mutex_lock(&ctx->lock);
+	dst_buf_info->used = true;
+	mutex_unlock(&ctx->lock);
+	src_buf_info->used = true;
+
+	ret = vdec_if_decode(ctx, &buf, pfb, &res_chg);
+
+	if (ret) {
+		mtk_v4l2_err(" <===[%d], src_buf[%d] sz=0x%zx pts=%llu dst_buf[%d] vdec_if_decode() ret=%d res_chg=%d===>",
+			     ctx->id, src_buf->vb2_buf.index, buf.size,
+			     src_buf->vb2_buf.timestamp, dst_buf->vb2_buf.index, ret, res_chg);
+		src_buf = v4l2_m2m_src_buf_remove(ctx->m2m_ctx);
+		if (ret == -EIO) {
+			mutex_lock(&ctx->lock);
+			src_buf_info->error = true;
+			mutex_unlock(&ctx->lock);
+		}
+		v4l2_m2m_buf_done(src_buf, VB2_BUF_STATE_ERROR);
+	} else if (!res_chg) {
+		/*
+		 * we only return src buffer with VB2_BUF_STATE_DONE
+		 * when decode success without resolution change
+		 */
+		src_buf = v4l2_m2m_src_buf_remove(ctx->m2m_ctx);
+		v4l2_m2m_buf_done(src_buf, VB2_BUF_STATE_DONE);
+	}
+
+	dst_buf = v4l2_m2m_dst_buf_remove(ctx->m2m_ctx);
+	clean_display_buffer(ctx);
+	clean_free_buffer(ctx);
+
+	if (!ret && res_chg) {
+		mtk_vdec_pic_info_update(ctx);
+		/*
+		 * On encountering a resolution change in the stream.
+		 * The driver must first process and decode all
+		 * remaining buffers from before the resolution change
+		 * point, so call flush decode here
+		 */
+		mtk_vdec_flush_decoder(ctx);
+		/*
+		 * After all buffers containing decoded frames from
+		 * before the resolution change point ready to be
+		 * dequeued on the CAPTURE queue, the driver sends a
+		 * V4L2_EVENT_SOURCE_CHANGE event for source change
+		 * type V4L2_EVENT_SRC_CH_RESOLUTION
+		 */
+		mtk_vdec_queue_res_chg_event(ctx);
+	}
+	v4l2_m2m_job_finish(dev->m2m_dev_dec, ctx->m2m_ctx);
+}
+
+static void vb2ops_vdec_stateful_buf_queue(struct vb2_buffer *vb)
+{
+	struct vb2_v4l2_buffer *src_buf;
+	struct mtk_vcodec_mem src_mem;
+	bool res_chg = false;
+	int ret;
+	unsigned int dpbsize = 1, i;
+	struct mtk_vcodec_ctx *ctx = vb2_get_drv_priv(vb->vb2_queue);
+	struct vb2_v4l2_buffer *vb2_v4l2;
+	struct mtk_q_data *dst_q_data;
+
+	mtk_v4l2_debug(3, "[%d] (%d) id=%d, vb=%p", ctx->id,
+		       vb->vb2_queue->type, vb->index, vb);
+	/*
+	 * check if this buffer is ready to be used after decode
+	 */
+	if (vb->vb2_queue->type != V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE) {
+		struct mtk_video_dec_buf *buf;
+
+		vb2_v4l2 = to_vb2_v4l2_buffer(vb);
+		buf = container_of(vb2_v4l2, struct mtk_video_dec_buf,
+				   m2m_buf.vb);
+		mutex_lock(&ctx->lock);
+		if (!buf->used) {
+			v4l2_m2m_buf_queue(ctx->m2m_ctx, vb2_v4l2);
+			buf->queued_in_vb2 = true;
+			buf->queued_in_v4l2 = true;
+		} else {
+			buf->queued_in_vb2 = false;
+			buf->queued_in_v4l2 = true;
+		}
+		mutex_unlock(&ctx->lock);
+		return;
+	}
+
+	v4l2_m2m_buf_queue(ctx->m2m_ctx, to_vb2_v4l2_buffer(vb));
+
+	if (ctx->state != MTK_STATE_INIT) {
+		mtk_v4l2_debug(3, "[%d] already init driver %d", ctx->id,
+			       ctx->state);
+		return;
+	}
+
+	src_buf = v4l2_m2m_next_src_buf(ctx->m2m_ctx);
+	if (!src_buf) {
+		mtk_v4l2_err("No src buffer");
+		return;
+	}
+
+	if (src_buf == &ctx->empty_flush_buf.vb) {
+		/* This shouldn't happen. Just in case. */
+		mtk_v4l2_err("Invalid flush buffer.");
+		v4l2_m2m_src_buf_remove(ctx->m2m_ctx);
+		return;
+	}
+
+	src_mem.va = vb2_plane_vaddr(&src_buf->vb2_buf, 0);
+	src_mem.dma_addr = vb2_dma_contig_plane_dma_addr(&src_buf->vb2_buf, 0);
+	src_mem.size = (size_t)src_buf->vb2_buf.planes[0].bytesused;
+	mtk_v4l2_debug(2, "[%d] buf id=%d va=%p dma=%pad size=%zx", ctx->id,
+		       src_buf->vb2_buf.index, src_mem.va, &src_mem.dma_addr,
+		       src_mem.size);
+
+	ret = vdec_if_decode(ctx, &src_mem, NULL, &res_chg);
+	if (ret || !res_chg) {
+		/*
+		 * fb == NULL means to parse SPS/PPS header or
+		 * resolution info in src_mem. Decode can fail
+		 * if there is no SPS header or picture info
+		 * in bs
+		 */
+
+		src_buf = v4l2_m2m_src_buf_remove(ctx->m2m_ctx);
+		if (ret == -EIO) {
+			mtk_v4l2_err("[%d] Unrecoverable error in vdec_if_decode.", ctx->id);
+			ctx->state = MTK_STATE_ABORT;
+			v4l2_m2m_buf_done(src_buf, VB2_BUF_STATE_ERROR);
+		} else {
+			v4l2_m2m_buf_done(src_buf, VB2_BUF_STATE_DONE);
+		}
+		mtk_v4l2_debug(ret ? 0 : 1,
+			       "[%d] vdec_if_decode() src_buf=%d, size=%zu, fail=%d, res_chg=%d",
+			       ctx->id, src_buf->vb2_buf.index, src_mem.size, ret, res_chg);
+		return;
+	}
+
+	if (vdec_if_get_param(ctx, GET_PARAM_PIC_INFO, &ctx->picinfo)) {
+		mtk_v4l2_err("[%d]Error!! Cannot get param : GET_PARAM_PICTURE_INFO ERR", ctx->id);
+		return;
+	}
+
+	ctx->last_decoded_picinfo = ctx->picinfo;
+	dst_q_data = &ctx->q_data[MTK_Q_DATA_DST];
+	for (i = 0; i < dst_q_data->fmt->num_planes; i++) {
+		dst_q_data->sizeimage[i] = ctx->picinfo.fb_sz[i];
+		dst_q_data->bytesperline[i] = ctx->picinfo.buf_w;
+	}
+
+	mtk_v4l2_debug(2, "[%d] vdec_if_init() OK wxh=%dx%d pic wxh=%dx%d sz[0]=0x%x sz[1]=0x%x",
+		       ctx->id, ctx->picinfo.buf_w, ctx->picinfo.buf_h, ctx->picinfo.pic_w,
+		       ctx->picinfo.pic_h, dst_q_data->sizeimage[0], dst_q_data->sizeimage[1]);
+
+	ret = vdec_if_get_param(ctx, GET_PARAM_DPB_SIZE, &dpbsize);
+	if (dpbsize == 0)
+		mtk_v4l2_err("[%d] GET_PARAM_DPB_SIZE fail=%d", ctx->id, ret);
+
+	ctx->dpb_size = dpbsize;
+	ctx->state = MTK_STATE_HEADER;
+	mtk_v4l2_debug(1, "[%d] dpbsize=%d", ctx->id, ctx->dpb_size);
+
+	mtk_vdec_queue_res_chg_event(ctx);
+}
+
+static int mtk_vdec_g_v_ctrl(struct v4l2_ctrl *ctrl)
+{
+	struct mtk_vcodec_ctx *ctx = ctrl_to_ctx(ctrl);
+	int ret = 0;
+
+	switch (ctrl->id) {
+	case V4L2_CID_MIN_BUFFERS_FOR_CAPTURE:
+		if (ctx->state >= MTK_STATE_HEADER) {
+			ctrl->val = ctx->dpb_size;
+		} else {
+			mtk_v4l2_debug(0, "Seqinfo not ready");
+			ctrl->val = 0;
+		}
+		break;
+	default:
+		ret = -EINVAL;
+	}
+	return ret;
+}
+
+static const struct v4l2_ctrl_ops mtk_vcodec_dec_ctrl_ops = {
+	.g_volatile_ctrl = mtk_vdec_g_v_ctrl,
+};
+
+static int mtk_vcodec_dec_ctrls_setup(struct mtk_vcodec_ctx *ctx)
+{
+	struct v4l2_ctrl *ctrl;
+
+	v4l2_ctrl_handler_init(&ctx->ctrl_hdl, 1);
+
+	ctrl = v4l2_ctrl_new_std(&ctx->ctrl_hdl, &mtk_vcodec_dec_ctrl_ops,
+				 V4L2_CID_MIN_BUFFERS_FOR_CAPTURE, 0, 32, 1, 1);
+	ctrl->flags |= V4L2_CTRL_FLAG_VOLATILE;
+	v4l2_ctrl_new_std_menu(&ctx->ctrl_hdl, &mtk_vcodec_dec_ctrl_ops,
+			       V4L2_CID_MPEG_VIDEO_VP9_PROFILE,
+			       V4L2_MPEG_VIDEO_VP9_PROFILE_0, 0,
+			       V4L2_MPEG_VIDEO_VP9_PROFILE_0);
+	/*
+	 * H264. Baseline / Extended decoding is not supported.
+	 */
+	v4l2_ctrl_new_std_menu(&ctx->ctrl_hdl, &mtk_vcodec_dec_ctrl_ops,
+			       V4L2_CID_MPEG_VIDEO_H264_PROFILE, V4L2_MPEG_VIDEO_H264_PROFILE_HIGH,
+			       BIT(V4L2_MPEG_VIDEO_H264_PROFILE_BASELINE) |
+			       BIT(V4L2_MPEG_VIDEO_H264_PROFILE_EXTENDED),
+			       V4L2_MPEG_VIDEO_H264_PROFILE_MAIN);
+
+	if (ctx->ctrl_hdl.error) {
+		mtk_v4l2_err("Adding control failed %d", ctx->ctrl_hdl.error);
+		return ctx->ctrl_hdl.error;
+	}
+
+	v4l2_ctrl_handler_setup(&ctx->ctrl_hdl);
+	return 0;
+}
+
+static void mtk_init_vdec_params(struct mtk_vcodec_ctx *ctx)
+{
+}
+
+static struct vb2_ops mtk_vdec_frame_vb2_ops = {
+	.queue_setup = vb2ops_vdec_queue_setup,
+	.buf_prepare = vb2ops_vdec_buf_prepare,
+	.wait_prepare = vb2_ops_wait_prepare,
+	.wait_finish = vb2_ops_wait_finish,
+	.start_streaming = vb2ops_vdec_start_streaming,
+
+	.buf_queue = vb2ops_vdec_stateful_buf_queue,
+	.buf_init = vb2ops_vdec_buf_init,
+	.buf_finish = vb2ops_vdec_buf_finish,
+	.stop_streaming = vb2ops_vdec_stop_streaming,
+};
+
+const struct mtk_vcodec_dec_pdata mtk_vdec_8173_pdata = {
+	.init_vdec_params = mtk_init_vdec_params,
+	.ctrls_setup = mtk_vcodec_dec_ctrls_setup,
+	.vdec_vb2_ops = &mtk_vdec_frame_vb2_ops,
+	.vdec_formats = mtk_video_formats,
+	.num_formats = &num_supported_formats,
+	.default_out_fmt = &mtk_video_formats[DEFAULT_OUT_FMT_IDX],
+	.default_cap_fmt = &mtk_video_formats[DEFAULT_CAP_FMT_IDX],
+	.worker = mtk_vdec_worker,
+	.flush_decoder = mtk_vdec_flush_decoder,
+	.is_subdev_supported = false,
+	.hw_arch = MTK_VDEC_PURE_SINGLE_CORE,
+};