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, 1102 insertions, 0 deletions

diff --git a/drivers/media/platform/sunxi/sun6i-csi/sun6i_csi_capture.c b/drivers/media/platform/sunxi/sun6i-csi/sun6i_csi_capture.c
new file mode 100644
index 000000000..cf6aadbc1
--- /dev/null
+++ b/drivers/media/platform/sunxi/sun6i-csi/sun6i_csi_capture.c
@@ -0,0 +1,1102 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Copyright (c) 2011-2018 Magewell Electronics Co., Ltd. (Nanjing)
+ * Author: Yong Deng <yong.deng@magewell.com>
+ * Copyright 2021-2022 Bootlin
+ * Author: Paul Kocialkowski <paul.kocialkowski@bootlin.com>
+ */
+
+#include <linux/of.h>
+#include <linux/regmap.h>
+#include <media/v4l2-device.h>
+#include <media/v4l2-event.h>
+#include <media/v4l2-ioctl.h>
+#include <media/v4l2-mc.h>
+#include <media/videobuf2-dma-contig.h>
+#include <media/videobuf2-v4l2.h>
+
+#include "sun6i_csi.h"
+#include "sun6i_csi_bridge.h"
+#include "sun6i_csi_capture.h"
+#include "sun6i_csi_reg.h"
+
+/* Helpers */
+
+void sun6i_csi_capture_dimensions(struct sun6i_csi_device *csi_dev,
+				  unsigned int *width, unsigned int *height)
+{
+	if (width)
+		*width = csi_dev->capture.format.fmt.pix.width;
+	if (height)
+		*height = csi_dev->capture.format.fmt.pix.height;
+}
+
+void sun6i_csi_capture_format(struct sun6i_csi_device *csi_dev,
+			      u32 *pixelformat, u32 *field)
+{
+	if (pixelformat)
+		*pixelformat = csi_dev->capture.format.fmt.pix.pixelformat;
+
+	if (field)
+		*field = csi_dev->capture.format.fmt.pix.field;
+}
+
+/* Format */
+
+static const struct sun6i_csi_capture_format sun6i_csi_capture_formats[] = {
+	/* Bayer */
+	{
+		.pixelformat		= V4L2_PIX_FMT_SBGGR8,
+		.output_format_frame	= SUN6I_CSI_OUTPUT_FMT_FRAME_RAW_8,
+		.output_format_field	= SUN6I_CSI_OUTPUT_FMT_FIELD_RAW_8,
+	},
+	{
+		.pixelformat		= V4L2_PIX_FMT_SGBRG8,
+		.output_format_frame	= SUN6I_CSI_OUTPUT_FMT_FRAME_RAW_8,
+		.output_format_field	= SUN6I_CSI_OUTPUT_FMT_FIELD_RAW_8,
+	},
+	{
+		.pixelformat		= V4L2_PIX_FMT_SGRBG8,
+		.output_format_frame	= SUN6I_CSI_OUTPUT_FMT_FRAME_RAW_8,
+		.output_format_field	= SUN6I_CSI_OUTPUT_FMT_FIELD_RAW_8,
+	},
+	{
+		.pixelformat		= V4L2_PIX_FMT_SRGGB8,
+		.output_format_frame	= SUN6I_CSI_OUTPUT_FMT_FRAME_RAW_8,
+		.output_format_field	= SUN6I_CSI_OUTPUT_FMT_FIELD_RAW_8,
+	},
+	{
+		.pixelformat		= V4L2_PIX_FMT_SBGGR10,
+		.output_format_frame	= SUN6I_CSI_OUTPUT_FMT_FRAME_RAW_10,
+		.output_format_field	= SUN6I_CSI_OUTPUT_FMT_FIELD_RAW_10,
+	},
+	{
+		.pixelformat		= V4L2_PIX_FMT_SGBRG10,
+		.output_format_frame	= SUN6I_CSI_OUTPUT_FMT_FRAME_RAW_10,
+		.output_format_field	= SUN6I_CSI_OUTPUT_FMT_FIELD_RAW_10,
+	},
+	{
+		.pixelformat		= V4L2_PIX_FMT_SGRBG10,
+		.output_format_frame	= SUN6I_CSI_OUTPUT_FMT_FRAME_RAW_10,
+		.output_format_field	= SUN6I_CSI_OUTPUT_FMT_FIELD_RAW_10,
+	},
+	{
+		.pixelformat		= V4L2_PIX_FMT_SRGGB10,
+		.output_format_frame	= SUN6I_CSI_OUTPUT_FMT_FRAME_RAW_10,
+		.output_format_field	= SUN6I_CSI_OUTPUT_FMT_FIELD_RAW_10,
+	},
+	{
+		.pixelformat		= V4L2_PIX_FMT_SBGGR12,
+		.output_format_frame	= SUN6I_CSI_OUTPUT_FMT_FRAME_RAW_12,
+		.output_format_field	= SUN6I_CSI_OUTPUT_FMT_FIELD_RAW_12,
+	},
+	{
+		.pixelformat		= V4L2_PIX_FMT_SGBRG12,
+		.output_format_frame	= SUN6I_CSI_OUTPUT_FMT_FRAME_RAW_12,
+		.output_format_field	= SUN6I_CSI_OUTPUT_FMT_FIELD_RAW_12,
+	},
+	{
+		.pixelformat		= V4L2_PIX_FMT_SGRBG12,
+		.output_format_frame	= SUN6I_CSI_OUTPUT_FMT_FRAME_RAW_12,
+		.output_format_field	= SUN6I_CSI_OUTPUT_FMT_FIELD_RAW_12,
+	},
+	{
+		.pixelformat		= V4L2_PIX_FMT_SRGGB12,
+		.output_format_frame	= SUN6I_CSI_OUTPUT_FMT_FRAME_RAW_12,
+		.output_format_field	= SUN6I_CSI_OUTPUT_FMT_FIELD_RAW_12,
+	},
+	/* RGB */
+	{
+		.pixelformat		= V4L2_PIX_FMT_RGB565,
+		.output_format_frame	= SUN6I_CSI_OUTPUT_FMT_FRAME_RGB565,
+		.output_format_field	= SUN6I_CSI_OUTPUT_FMT_FIELD_RGB565,
+	},
+	{
+		.pixelformat		= V4L2_PIX_FMT_RGB565X,
+		.output_format_frame	= SUN6I_CSI_OUTPUT_FMT_FRAME_RGB565,
+		.output_format_field	= SUN6I_CSI_OUTPUT_FMT_FIELD_RGB565,
+	},
+	/* YUV422 */
+	{
+		.pixelformat		= V4L2_PIX_FMT_YUYV,
+		.output_format_frame	= SUN6I_CSI_OUTPUT_FMT_FRAME_RAW_8,
+		.output_format_field	= SUN6I_CSI_OUTPUT_FMT_FIELD_RAW_8,
+		.input_format_raw	= true,
+		.hsize_len_factor	= 2,
+	},
+	{
+		.pixelformat		= V4L2_PIX_FMT_YVYU,
+		.output_format_frame	= SUN6I_CSI_OUTPUT_FMT_FRAME_RAW_8,
+		.output_format_field	= SUN6I_CSI_OUTPUT_FMT_FIELD_RAW_8,
+		.input_format_raw	= true,
+		.hsize_len_factor	= 2,
+	},
+	{
+		.pixelformat		= V4L2_PIX_FMT_UYVY,
+		.output_format_frame	= SUN6I_CSI_OUTPUT_FMT_FRAME_RAW_8,
+		.output_format_field	= SUN6I_CSI_OUTPUT_FMT_FIELD_RAW_8,
+		.input_format_raw	= true,
+		.hsize_len_factor	= 2,
+	},
+	{
+		.pixelformat		= V4L2_PIX_FMT_VYUY,
+		.output_format_frame	= SUN6I_CSI_OUTPUT_FMT_FRAME_RAW_8,
+		.output_format_field	= SUN6I_CSI_OUTPUT_FMT_FIELD_RAW_8,
+		.input_format_raw	= true,
+		.hsize_len_factor	= 2,
+	},
+	{
+		.pixelformat		= V4L2_PIX_FMT_NV16,
+		.output_format_frame	= SUN6I_CSI_OUTPUT_FMT_FRAME_YUV422SP,
+		.output_format_field	= SUN6I_CSI_OUTPUT_FMT_FIELD_YUV422SP,
+	},
+	{
+		.pixelformat		= V4L2_PIX_FMT_NV61,
+		.output_format_frame	= SUN6I_CSI_OUTPUT_FMT_FRAME_YUV422SP,
+		.output_format_field	= SUN6I_CSI_OUTPUT_FMT_FIELD_YUV422SP,
+		.input_yuv_seq_invert	= true,
+	},
+	{
+		.pixelformat		= V4L2_PIX_FMT_YUV422P,
+		.output_format_frame	= SUN6I_CSI_OUTPUT_FMT_FRAME_YUV422P,
+		.output_format_field	= SUN6I_CSI_OUTPUT_FMT_FIELD_YUV422P,
+	},
+	/* YUV420 */
+	{
+		.pixelformat		= V4L2_PIX_FMT_NV12_16L16,
+		.output_format_frame	= SUN6I_CSI_OUTPUT_FMT_FRAME_YUV420MB,
+		.output_format_field	= SUN6I_CSI_OUTPUT_FMT_FIELD_YUV420MB,
+	},
+	{
+		.pixelformat		= V4L2_PIX_FMT_NV12,
+		.output_format_frame	= SUN6I_CSI_OUTPUT_FMT_FRAME_YUV420SP,
+		.output_format_field	= SUN6I_CSI_OUTPUT_FMT_FIELD_YUV420SP,
+	},
+	{
+		.pixelformat		= V4L2_PIX_FMT_NV21,
+		.output_format_frame	= SUN6I_CSI_OUTPUT_FMT_FRAME_YUV420SP,
+		.output_format_field	= SUN6I_CSI_OUTPUT_FMT_FIELD_YUV420SP,
+		.input_yuv_seq_invert	= true,
+	},
+
+	{
+		.pixelformat		= V4L2_PIX_FMT_YUV420,
+		.output_format_frame	= SUN6I_CSI_OUTPUT_FMT_FRAME_YUV420P,
+		.output_format_field	= SUN6I_CSI_OUTPUT_FMT_FIELD_YUV420P,
+	},
+	{
+		.pixelformat		= V4L2_PIX_FMT_YVU420,
+		.output_format_frame	= SUN6I_CSI_OUTPUT_FMT_FRAME_YUV420P,
+		.output_format_field	= SUN6I_CSI_OUTPUT_FMT_FIELD_YUV420P,
+		.input_yuv_seq_invert	= true,
+	},
+	/* Compressed */
+	{
+		.pixelformat		= V4L2_PIX_FMT_JPEG,
+		.output_format_frame	= SUN6I_CSI_OUTPUT_FMT_FRAME_RAW_8,
+		.output_format_field	= SUN6I_CSI_OUTPUT_FMT_FIELD_RAW_8,
+	},
+};
+
+const
+struct sun6i_csi_capture_format *sun6i_csi_capture_format_find(u32 pixelformat)
+{
+	unsigned int i;
+
+	for (i = 0; i < ARRAY_SIZE(sun6i_csi_capture_formats); i++)
+		if (sun6i_csi_capture_formats[i].pixelformat == pixelformat)
+			return &sun6i_csi_capture_formats[i];
+
+	return NULL;
+}
+
+/* RAW formats need an exact match between pixel and mbus formats. */
+static const
+struct sun6i_csi_capture_format_match sun6i_csi_capture_format_matches[] = {
+	/* YUV420 */
+	{
+		.pixelformat	= V4L2_PIX_FMT_YUYV,
+		.mbus_code	= MEDIA_BUS_FMT_YUYV8_2X8,
+	},
+	{
+		.pixelformat	= V4L2_PIX_FMT_YUYV,
+		.mbus_code	= MEDIA_BUS_FMT_YUYV8_1X16,
+	},
+	{
+		.pixelformat	= V4L2_PIX_FMT_YVYU,
+		.mbus_code	= MEDIA_BUS_FMT_YVYU8_2X8,
+	},
+	{
+		.pixelformat	= V4L2_PIX_FMT_YVYU,
+		.mbus_code	= MEDIA_BUS_FMT_YVYU8_1X16,
+	},
+	{
+		.pixelformat	= V4L2_PIX_FMT_UYVY,
+		.mbus_code	= MEDIA_BUS_FMT_UYVY8_2X8,
+	},
+	{
+		.pixelformat	= V4L2_PIX_FMT_UYVY,
+		.mbus_code	= MEDIA_BUS_FMT_UYVY8_1X16,
+	},
+	{
+		.pixelformat	= V4L2_PIX_FMT_VYUY,
+		.mbus_code	= MEDIA_BUS_FMT_VYUY8_2X8,
+	},
+	{
+		.pixelformat	= V4L2_PIX_FMT_VYUY,
+		.mbus_code	= MEDIA_BUS_FMT_VYUY8_1X16,
+	},
+	/* RGB */
+	{
+		.pixelformat	= V4L2_PIX_FMT_RGB565,
+		.mbus_code	= MEDIA_BUS_FMT_RGB565_2X8_LE,
+	},
+	{
+		.pixelformat	= V4L2_PIX_FMT_RGB565X,
+		.mbus_code	= MEDIA_BUS_FMT_RGB565_2X8_BE,
+	},
+	/* Bayer */
+	{
+		.pixelformat	= V4L2_PIX_FMT_SBGGR8,
+		.mbus_code	= MEDIA_BUS_FMT_SBGGR8_1X8,
+	},
+	{
+		.pixelformat	= V4L2_PIX_FMT_SGBRG8,
+		.mbus_code	= MEDIA_BUS_FMT_SGBRG8_1X8,
+	},
+	{
+		.pixelformat	= V4L2_PIX_FMT_SGRBG8,
+		.mbus_code	= MEDIA_BUS_FMT_SGRBG8_1X8,
+	},
+	{
+		.pixelformat	= V4L2_PIX_FMT_SRGGB8,
+		.mbus_code	= MEDIA_BUS_FMT_SRGGB8_1X8,
+	},
+	{
+		.pixelformat	= V4L2_PIX_FMT_SBGGR10,
+		.mbus_code	= MEDIA_BUS_FMT_SBGGR10_1X10,
+	},
+	{
+		.pixelformat	= V4L2_PIX_FMT_SGBRG10,
+		.mbus_code	= MEDIA_BUS_FMT_SGBRG10_1X10,
+	},
+	{
+		.pixelformat	= V4L2_PIX_FMT_SGRBG10,
+		.mbus_code	= MEDIA_BUS_FMT_SGRBG10_1X10,
+	},
+	{
+		.pixelformat	= V4L2_PIX_FMT_SRGGB10,
+		.mbus_code	= MEDIA_BUS_FMT_SRGGB10_1X10,
+	},
+	{
+		.pixelformat	= V4L2_PIX_FMT_SBGGR12,
+		.mbus_code	= MEDIA_BUS_FMT_SBGGR12_1X12,
+	},
+	{
+		.pixelformat	= V4L2_PIX_FMT_SGBRG12,
+		.mbus_code	= MEDIA_BUS_FMT_SGBRG12_1X12,
+	},
+	{
+		.pixelformat	= V4L2_PIX_FMT_SGRBG12,
+		.mbus_code	= MEDIA_BUS_FMT_SGRBG12_1X12,
+	},
+	{
+		.pixelformat	= V4L2_PIX_FMT_SRGGB12,
+		.mbus_code	= MEDIA_BUS_FMT_SRGGB12_1X12,
+	},
+	/* Compressed */
+	{
+		.pixelformat	= V4L2_PIX_FMT_JPEG,
+		.mbus_code	= MEDIA_BUS_FMT_JPEG_1X8,
+	},
+};
+
+static bool sun6i_csi_capture_format_match(u32 pixelformat, u32 mbus_code)
+{
+	unsigned int i;
+
+	for (i = 0; i < ARRAY_SIZE(sun6i_csi_capture_format_matches); i++) {
+		const struct sun6i_csi_capture_format_match *match =
+			&sun6i_csi_capture_format_matches[i];
+
+		if (match->pixelformat == pixelformat &&
+		    match->mbus_code == mbus_code)
+			return true;
+	}
+
+	return false;
+}
+
+/* Capture */
+
+static void
+sun6i_csi_capture_buffer_configure(struct sun6i_csi_device *csi_dev,
+				   struct sun6i_csi_buffer *csi_buffer)
+{
+	struct regmap *regmap = csi_dev->regmap;
+	const struct v4l2_format_info *info;
+	struct vb2_buffer *vb2_buffer;
+	unsigned int width, height;
+	dma_addr_t address;
+	u32 pixelformat;
+
+	vb2_buffer = &csi_buffer->v4l2_buffer.vb2_buf;
+	address = vb2_dma_contig_plane_dma_addr(vb2_buffer, 0);
+
+	regmap_write(regmap, SUN6I_CSI_CH_FIFO0_ADDR_REG,
+		     SUN6I_CSI_ADDR_VALUE(address));
+
+	sun6i_csi_capture_dimensions(csi_dev, &width, &height);
+	sun6i_csi_capture_format(csi_dev, &pixelformat, NULL);
+
+	info = v4l2_format_info(pixelformat);
+	/* Unsupported formats are single-plane, so we can stop here. */
+	if (!info)
+		return;
+
+	if (info->comp_planes > 1) {
+		address += info->bpp[0] * width * height;
+
+		regmap_write(regmap, SUN6I_CSI_CH_FIFO1_ADDR_REG,
+			     SUN6I_CSI_ADDR_VALUE(address));
+	}
+
+	if (info->comp_planes > 2) {
+		address += info->bpp[1] * DIV_ROUND_UP(width, info->hdiv) *
+			   DIV_ROUND_UP(height, info->vdiv);
+
+		regmap_write(regmap, SUN6I_CSI_CH_FIFO2_ADDR_REG,
+			     SUN6I_CSI_ADDR_VALUE(address));
+	}
+}
+
+void sun6i_csi_capture_configure(struct sun6i_csi_device *csi_dev)
+{
+	struct regmap *regmap = csi_dev->regmap;
+	const struct sun6i_csi_capture_format *format;
+	const struct v4l2_format_info *info;
+	u32 hsize_len, vsize_len;
+	u32 luma_line, chroma_line = 0;
+	u32 pixelformat, field;
+	u32 width, height;
+
+	sun6i_csi_capture_dimensions(csi_dev, &width, &height);
+	sun6i_csi_capture_format(csi_dev, &pixelformat, &field);
+
+	format = sun6i_csi_capture_format_find(pixelformat);
+	if (WARN_ON(!format))
+		return;
+
+	hsize_len = width;
+	vsize_len = height;
+
+	/*
+	 * When using 8-bit raw input/output (for packed YUV), we need to adapt
+	 * the width to account for the difference in bpp when it's not 8-bit.
+	 */
+	if (format->hsize_len_factor)
+		hsize_len *= format->hsize_len_factor;
+
+	regmap_write(regmap, SUN6I_CSI_CH_HSIZE_REG,
+		     SUN6I_CSI_CH_HSIZE_LEN(hsize_len) |
+		     SUN6I_CSI_CH_HSIZE_START(0));
+
+	regmap_write(regmap, SUN6I_CSI_CH_VSIZE_REG,
+		     SUN6I_CSI_CH_VSIZE_LEN(vsize_len) |
+		     SUN6I_CSI_CH_VSIZE_START(0));
+
+	switch (pixelformat) {
+	case V4L2_PIX_FMT_RGB565X:
+		luma_line = width * 2;
+		break;
+	case V4L2_PIX_FMT_NV12_16L16:
+		luma_line = width;
+		chroma_line = width;
+		break;
+	case V4L2_PIX_FMT_JPEG:
+		luma_line = width;
+		break;
+	default:
+		info = v4l2_format_info(pixelformat);
+		if (WARN_ON(!info))
+			return;
+
+		luma_line = width * info->bpp[0];
+
+		if (info->comp_planes > 1)
+			chroma_line = width * info->bpp[1] / info->hdiv;
+		break;
+	}
+
+	regmap_write(regmap, SUN6I_CSI_CH_BUF_LEN_REG,
+		     SUN6I_CSI_CH_BUF_LEN_CHROMA_LINE(chroma_line) |
+		     SUN6I_CSI_CH_BUF_LEN_LUMA_LINE(luma_line));
+}
+
+/* State */
+
+static void sun6i_csi_capture_state_cleanup(struct sun6i_csi_device *csi_dev,
+					    bool error)
+{
+	struct sun6i_csi_capture_state *state = &csi_dev->capture.state;
+	struct sun6i_csi_buffer **csi_buffer_states[] = {
+		&state->pending, &state->current, &state->complete,
+	};
+	struct sun6i_csi_buffer *csi_buffer;
+	struct vb2_buffer *vb2_buffer;
+	unsigned long flags;
+	unsigned int i;
+
+	spin_lock_irqsave(&state->lock, flags);
+
+	for (i = 0; i < ARRAY_SIZE(csi_buffer_states); i++) {
+		csi_buffer = *csi_buffer_states[i];
+		if (!csi_buffer)
+			continue;
+
+		vb2_buffer = &csi_buffer->v4l2_buffer.vb2_buf;
+		vb2_buffer_done(vb2_buffer, error ? VB2_BUF_STATE_ERROR :
+				VB2_BUF_STATE_QUEUED);
+
+		*csi_buffer_states[i] = NULL;
+	}
+
+	list_for_each_entry(csi_buffer, &state->queue, list) {
+		vb2_buffer = &csi_buffer->v4l2_buffer.vb2_buf;
+		vb2_buffer_done(vb2_buffer, error ? VB2_BUF_STATE_ERROR :
+				VB2_BUF_STATE_QUEUED);
+	}
+
+	INIT_LIST_HEAD(&state->queue);
+
+	spin_unlock_irqrestore(&state->lock, flags);
+}
+
+void sun6i_csi_capture_state_update(struct sun6i_csi_device *csi_dev)
+{
+	struct sun6i_csi_capture_state *state = &csi_dev->capture.state;
+	struct sun6i_csi_buffer *csi_buffer;
+	unsigned long flags;
+
+	spin_lock_irqsave(&state->lock, flags);
+
+	if (list_empty(&state->queue))
+		goto complete;
+
+	if (state->pending)
+		goto complete;
+
+	csi_buffer = list_first_entry(&state->queue, struct sun6i_csi_buffer,
+				      list);
+
+	sun6i_csi_capture_buffer_configure(csi_dev, csi_buffer);
+
+	list_del(&csi_buffer->list);
+
+	state->pending = csi_buffer;
+
+complete:
+	spin_unlock_irqrestore(&state->lock, flags);
+}
+
+static void sun6i_csi_capture_state_complete(struct sun6i_csi_device *csi_dev)
+{
+	struct sun6i_csi_capture_state *state = &csi_dev->capture.state;
+	unsigned long flags;
+
+	spin_lock_irqsave(&state->lock, flags);
+
+	if (!state->pending)
+		goto complete;
+
+	state->complete = state->current;
+	state->current = state->pending;
+	state->pending = NULL;
+
+	if (state->complete) {
+		struct sun6i_csi_buffer *csi_buffer = state->complete;
+		struct vb2_buffer *vb2_buffer =
+			&csi_buffer->v4l2_buffer.vb2_buf;
+
+		vb2_buffer->timestamp = ktime_get_ns();
+		csi_buffer->v4l2_buffer.sequence = state->sequence;
+
+		vb2_buffer_done(vb2_buffer, VB2_BUF_STATE_DONE);
+
+		state->complete = NULL;
+	}
+
+complete:
+	spin_unlock_irqrestore(&state->lock, flags);
+}
+
+void sun6i_csi_capture_frame_done(struct sun6i_csi_device *csi_dev)
+{
+	struct sun6i_csi_capture_state *state = &csi_dev->capture.state;
+	unsigned long flags;
+
+	spin_lock_irqsave(&state->lock, flags);
+	state->sequence++;
+	spin_unlock_irqrestore(&state->lock, flags);
+}
+
+void sun6i_csi_capture_sync(struct sun6i_csi_device *csi_dev)
+{
+	sun6i_csi_capture_state_complete(csi_dev);
+	sun6i_csi_capture_state_update(csi_dev);
+}
+
+/* Queue */
+
+static int sun6i_csi_capture_queue_setup(struct vb2_queue *queue,
+					 unsigned int *buffers_count,
+					 unsigned int *planes_count,
+					 unsigned int sizes[],
+					 struct device *alloc_devs[])
+{
+	struct sun6i_csi_device *csi_dev = vb2_get_drv_priv(queue);
+	unsigned int size = csi_dev->capture.format.fmt.pix.sizeimage;
+
+	if (*planes_count)
+		return sizes[0] < size ? -EINVAL : 0;
+
+	*planes_count = 1;
+	sizes[0] = size;
+
+	return 0;
+}
+
+static int sun6i_csi_capture_buffer_prepare(struct vb2_buffer *buffer)
+{
+	struct sun6i_csi_device *csi_dev = vb2_get_drv_priv(buffer->vb2_queue);
+	struct sun6i_csi_capture *capture = &csi_dev->capture;
+	struct v4l2_device *v4l2_dev = csi_dev->v4l2_dev;
+	struct vb2_v4l2_buffer *v4l2_buffer = to_vb2_v4l2_buffer(buffer);
+	unsigned long size = capture->format.fmt.pix.sizeimage;
+
+	if (vb2_plane_size(buffer, 0) < size) {
+		v4l2_err(v4l2_dev, "buffer too small (%lu < %lu)\n",
+			 vb2_plane_size(buffer, 0), size);
+		return -EINVAL;
+	}
+
+	vb2_set_plane_payload(buffer, 0, size);
+
+	v4l2_buffer->field = capture->format.fmt.pix.field;
+
+	return 0;
+}
+
+static void sun6i_csi_capture_buffer_queue(struct vb2_buffer *buffer)
+{
+	struct sun6i_csi_device *csi_dev = vb2_get_drv_priv(buffer->vb2_queue);
+	struct sun6i_csi_capture_state *state = &csi_dev->capture.state;
+	struct vb2_v4l2_buffer *v4l2_buffer = to_vb2_v4l2_buffer(buffer);
+	struct sun6i_csi_buffer *csi_buffer =
+		container_of(v4l2_buffer, struct sun6i_csi_buffer, v4l2_buffer);
+	unsigned long flags;
+
+	spin_lock_irqsave(&state->lock, flags);
+	list_add_tail(&csi_buffer->list, &state->queue);
+	spin_unlock_irqrestore(&state->lock, flags);
+}
+
+static int sun6i_csi_capture_start_streaming(struct vb2_queue *queue,
+					     unsigned int count)
+{
+	struct sun6i_csi_device *csi_dev = vb2_get_drv_priv(queue);
+	struct sun6i_csi_capture_state *state = &csi_dev->capture.state;
+	struct video_device *video_dev = &csi_dev->capture.video_dev;
+	struct v4l2_subdev *subdev = &csi_dev->bridge.subdev;
+	int ret;
+
+	state->sequence = 0;
+
+	ret = video_device_pipeline_alloc_start(video_dev);
+	if (ret < 0)
+		goto error_state;
+
+	state->streaming = true;
+
+	ret = v4l2_subdev_call(subdev, video, s_stream, 1);
+	if (ret && ret != -ENOIOCTLCMD)
+		goto error_streaming;
+
+	return 0;
+
+error_streaming:
+	state->streaming = false;
+
+	video_device_pipeline_stop(video_dev);
+
+error_state:
+	sun6i_csi_capture_state_cleanup(csi_dev, false);
+
+	return ret;
+}
+
+static void sun6i_csi_capture_stop_streaming(struct vb2_queue *queue)
+{
+	struct sun6i_csi_device *csi_dev = vb2_get_drv_priv(queue);
+	struct sun6i_csi_capture_state *state = &csi_dev->capture.state;
+	struct video_device *video_dev = &csi_dev->capture.video_dev;
+	struct v4l2_subdev *subdev = &csi_dev->bridge.subdev;
+
+	v4l2_subdev_call(subdev, video, s_stream, 0);
+
+	state->streaming = false;
+
+	video_device_pipeline_stop(video_dev);
+
+	sun6i_csi_capture_state_cleanup(csi_dev, true);
+}
+
+static const struct vb2_ops sun6i_csi_capture_queue_ops = {
+	.queue_setup		= sun6i_csi_capture_queue_setup,
+	.buf_prepare		= sun6i_csi_capture_buffer_prepare,
+	.buf_queue		= sun6i_csi_capture_buffer_queue,
+	.start_streaming	= sun6i_csi_capture_start_streaming,
+	.stop_streaming		= sun6i_csi_capture_stop_streaming,
+	.wait_prepare		= vb2_ops_wait_prepare,
+	.wait_finish		= vb2_ops_wait_finish,
+};
+
+/* V4L2 Device */
+
+static void sun6i_csi_capture_format_prepare(struct v4l2_format *format)
+{
+	struct v4l2_pix_format *pix_format = &format->fmt.pix;
+	const struct v4l2_format_info *info;
+	unsigned int width, height;
+
+	v4l_bound_align_image(&pix_format->width, SUN6I_CSI_CAPTURE_WIDTH_MIN,
+			      SUN6I_CSI_CAPTURE_WIDTH_MAX, 1,
+			      &pix_format->height, SUN6I_CSI_CAPTURE_HEIGHT_MIN,
+			      SUN6I_CSI_CAPTURE_HEIGHT_MAX, 1, 0);
+
+	if (!sun6i_csi_capture_format_find(pix_format->pixelformat))
+		pix_format->pixelformat =
+			sun6i_csi_capture_formats[0].pixelformat;
+
+	width = pix_format->width;
+	height = pix_format->height;
+
+	info = v4l2_format_info(pix_format->pixelformat);
+
+	switch (pix_format->pixelformat) {
+	case V4L2_PIX_FMT_NV12_16L16:
+		pix_format->bytesperline = width * 12 / 8;
+		pix_format->sizeimage = pix_format->bytesperline * height;
+		break;
+	case V4L2_PIX_FMT_JPEG:
+		pix_format->bytesperline = width;
+		pix_format->sizeimage = pix_format->bytesperline * height;
+		break;
+	default:
+		v4l2_fill_pixfmt(pix_format, pix_format->pixelformat,
+				 width, height);
+		break;
+	}
+
+	if (pix_format->field == V4L2_FIELD_ANY)
+		pix_format->field = V4L2_FIELD_NONE;
+
+	if (pix_format->pixelformat == V4L2_PIX_FMT_JPEG)
+		pix_format->colorspace = V4L2_COLORSPACE_JPEG;
+	else if (info && info->pixel_enc == V4L2_PIXEL_ENC_BAYER)
+		pix_format->colorspace = V4L2_COLORSPACE_RAW;
+	else
+		pix_format->colorspace = V4L2_COLORSPACE_SRGB;
+
+	pix_format->ycbcr_enc = V4L2_YCBCR_ENC_DEFAULT;
+	pix_format->quantization = V4L2_QUANTIZATION_DEFAULT;
+	pix_format->xfer_func = V4L2_XFER_FUNC_DEFAULT;
+}
+
+static int sun6i_csi_capture_querycap(struct file *file, void *private,
+				      struct v4l2_capability *capability)
+{
+	struct sun6i_csi_device *csi_dev = video_drvdata(file);
+	struct video_device *video_dev = &csi_dev->capture.video_dev;
+
+	strscpy(capability->driver, SUN6I_CSI_NAME, sizeof(capability->driver));
+	strscpy(capability->card, video_dev->name, sizeof(capability->card));
+	snprintf(capability->bus_info, sizeof(capability->bus_info),
+		 "platform:%s", dev_name(csi_dev->dev));
+
+	return 0;
+}
+
+static int sun6i_csi_capture_enum_fmt(struct file *file, void *private,
+				      struct v4l2_fmtdesc *fmtdesc)
+{
+	u32 index = fmtdesc->index;
+
+	if (index >= ARRAY_SIZE(sun6i_csi_capture_formats))
+		return -EINVAL;
+
+	fmtdesc->pixelformat = sun6i_csi_capture_formats[index].pixelformat;
+
+	return 0;
+}
+
+static int sun6i_csi_capture_g_fmt(struct file *file, void *private,
+				   struct v4l2_format *format)
+{
+	struct sun6i_csi_device *csi_dev = video_drvdata(file);
+
+	*format = csi_dev->capture.format;
+
+	return 0;
+}
+
+static int sun6i_csi_capture_s_fmt(struct file *file, void *private,
+				   struct v4l2_format *format)
+{
+	struct sun6i_csi_device *csi_dev = video_drvdata(file);
+	struct sun6i_csi_capture *capture = &csi_dev->capture;
+
+	if (vb2_is_busy(&capture->queue))
+		return -EBUSY;
+
+	sun6i_csi_capture_format_prepare(format);
+
+	csi_dev->capture.format = *format;
+
+	return 0;
+}
+
+static int sun6i_csi_capture_try_fmt(struct file *file, void *private,
+				     struct v4l2_format *format)
+{
+	sun6i_csi_capture_format_prepare(format);
+
+	return 0;
+}
+
+static int sun6i_csi_capture_enum_input(struct file *file, void *private,
+					struct v4l2_input *input)
+{
+	if (input->index != 0)
+		return -EINVAL;
+
+	input->type = V4L2_INPUT_TYPE_CAMERA;
+	strscpy(input->name, "Camera", sizeof(input->name));
+
+	return 0;
+}
+
+static int sun6i_csi_capture_g_input(struct file *file, void *private,
+				     unsigned int *index)
+{
+	*index = 0;
+
+	return 0;
+}
+
+static int sun6i_csi_capture_s_input(struct file *file, void *private,
+				     unsigned int index)
+{
+	if (index != 0)
+		return -EINVAL;
+
+	return 0;
+}
+
+static const struct v4l2_ioctl_ops sun6i_csi_capture_ioctl_ops = {
+	.vidioc_querycap		= sun6i_csi_capture_querycap,
+
+	.vidioc_enum_fmt_vid_cap	= sun6i_csi_capture_enum_fmt,
+	.vidioc_g_fmt_vid_cap		= sun6i_csi_capture_g_fmt,
+	.vidioc_s_fmt_vid_cap		= sun6i_csi_capture_s_fmt,
+	.vidioc_try_fmt_vid_cap		= sun6i_csi_capture_try_fmt,
+
+	.vidioc_enum_input		= sun6i_csi_capture_enum_input,
+	.vidioc_g_input			= sun6i_csi_capture_g_input,
+	.vidioc_s_input			= sun6i_csi_capture_s_input,
+
+	.vidioc_create_bufs		= vb2_ioctl_create_bufs,
+	.vidioc_prepare_buf		= vb2_ioctl_prepare_buf,
+	.vidioc_reqbufs			= vb2_ioctl_reqbufs,
+	.vidioc_querybuf		= vb2_ioctl_querybuf,
+	.vidioc_expbuf			= vb2_ioctl_expbuf,
+	.vidioc_qbuf			= vb2_ioctl_qbuf,
+	.vidioc_dqbuf			= vb2_ioctl_dqbuf,
+	.vidioc_streamon		= vb2_ioctl_streamon,
+	.vidioc_streamoff		= vb2_ioctl_streamoff,
+};
+
+/* V4L2 File */
+
+static int sun6i_csi_capture_open(struct file *file)
+{
+	struct sun6i_csi_device *csi_dev = video_drvdata(file);
+	struct sun6i_csi_capture *capture = &csi_dev->capture;
+	int ret;
+
+	if (mutex_lock_interruptible(&capture->lock))
+		return -ERESTARTSYS;
+
+	ret = v4l2_pipeline_pm_get(&capture->video_dev.entity);
+	if (ret < 0)
+		goto error_lock;
+
+	ret = v4l2_fh_open(file);
+	if (ret < 0)
+		goto error_pipeline;
+
+	mutex_unlock(&capture->lock);
+
+	return 0;
+
+error_pipeline:
+	v4l2_pipeline_pm_put(&capture->video_dev.entity);
+
+error_lock:
+	mutex_unlock(&capture->lock);
+
+	return ret;
+}
+
+static int sun6i_csi_capture_close(struct file *file)
+{
+	struct sun6i_csi_device *csi_dev = video_drvdata(file);
+	struct sun6i_csi_capture *capture = &csi_dev->capture;
+
+	mutex_lock(&capture->lock);
+
+	_vb2_fop_release(file, NULL);
+	v4l2_pipeline_pm_put(&capture->video_dev.entity);
+
+	mutex_unlock(&capture->lock);
+
+	return 0;
+}
+
+static const struct v4l2_file_operations sun6i_csi_capture_fops = {
+	.owner		= THIS_MODULE,
+	.open		= sun6i_csi_capture_open,
+	.release	= sun6i_csi_capture_close,
+	.unlocked_ioctl	= video_ioctl2,
+	.mmap		= vb2_fop_mmap,
+	.poll		= vb2_fop_poll
+};
+
+/* Media Entity */
+
+static int sun6i_csi_capture_link_validate(struct media_link *link)
+{
+	struct video_device *video_dev =
+		media_entity_to_video_device(link->sink->entity);
+	struct sun6i_csi_device *csi_dev = video_get_drvdata(video_dev);
+	struct v4l2_device *v4l2_dev = csi_dev->v4l2_dev;
+	const struct sun6i_csi_capture_format *capture_format;
+	const struct sun6i_csi_bridge_format *bridge_format;
+	unsigned int capture_width, capture_height;
+	unsigned int bridge_width, bridge_height;
+	const struct v4l2_format_info *format_info;
+	u32 pixelformat, capture_field;
+	u32 mbus_code, bridge_field;
+	bool match;
+
+	sun6i_csi_capture_dimensions(csi_dev, &capture_width, &capture_height);
+
+	sun6i_csi_capture_format(csi_dev, &pixelformat, &capture_field);
+	capture_format = sun6i_csi_capture_format_find(pixelformat);
+	if (WARN_ON(!capture_format))
+		return -EINVAL;
+
+	sun6i_csi_bridge_dimensions(csi_dev, &bridge_width, &bridge_height);
+
+	sun6i_csi_bridge_format(csi_dev, &mbus_code, &bridge_field);
+	bridge_format = sun6i_csi_bridge_format_find(mbus_code);
+	if (WARN_ON(!bridge_format))
+		return -EINVAL;
+
+	/* No cropping/scaling is supported. */
+	if (capture_width != bridge_width || capture_height != bridge_height) {
+		v4l2_err(v4l2_dev,
+			 "invalid input/output dimensions: %ux%u/%ux%u\n",
+			 bridge_width, bridge_height, capture_width,
+			 capture_height);
+		return -EINVAL;
+	}
+
+	format_info = v4l2_format_info(pixelformat);
+	/* Some formats are not listed. */
+	if (!format_info)
+		return 0;
+
+	if (format_info->pixel_enc == V4L2_PIXEL_ENC_BAYER &&
+	    bridge_format->input_format != SUN6I_CSI_INPUT_FMT_RAW)
+		goto invalid;
+
+	if (format_info->pixel_enc == V4L2_PIXEL_ENC_RGB &&
+	    bridge_format->input_format != SUN6I_CSI_INPUT_FMT_RAW)
+		goto invalid;
+
+	if (format_info->pixel_enc == V4L2_PIXEL_ENC_YUV) {
+		if (bridge_format->input_format != SUN6I_CSI_INPUT_FMT_YUV420 &&
+		    bridge_format->input_format != SUN6I_CSI_INPUT_FMT_YUV422)
+			goto invalid;
+
+		/* YUV420 input can't produce YUV422 output. */
+		if (bridge_format->input_format == SUN6I_CSI_INPUT_FMT_YUV420 &&
+		    format_info->vdiv == 1)
+			goto invalid;
+	}
+
+	/* With raw input mode, we need a 1:1 match between input and output. */
+	if (bridge_format->input_format == SUN6I_CSI_INPUT_FMT_RAW ||
+	    capture_format->input_format_raw) {
+		match = sun6i_csi_capture_format_match(pixelformat, mbus_code);
+		if (!match)
+			goto invalid;
+	}
+
+	return 0;
+
+invalid:
+	v4l2_err(v4l2_dev, "invalid input/output format combination\n");
+	return -EINVAL;
+}
+
+static const struct media_entity_operations sun6i_csi_capture_media_ops = {
+	.link_validate = sun6i_csi_capture_link_validate
+};
+
+/* Capture */
+
+int sun6i_csi_capture_setup(struct sun6i_csi_device *csi_dev)
+{
+	struct sun6i_csi_capture *capture = &csi_dev->capture;
+	struct sun6i_csi_capture_state *state = &capture->state;
+	struct v4l2_device *v4l2_dev = csi_dev->v4l2_dev;
+	struct v4l2_subdev *bridge_subdev = &csi_dev->bridge.subdev;
+	struct video_device *video_dev = &capture->video_dev;
+	struct vb2_queue *queue = &capture->queue;
+	struct media_pad *pad = &capture->pad;
+	struct v4l2_format *format = &csi_dev->capture.format;
+	struct v4l2_pix_format *pix_format = &format->fmt.pix;
+	int ret;
+
+	/* This may happen with multiple bridge notifier bound calls. */
+	if (state->setup)
+		return 0;
+
+	/* State */
+
+	INIT_LIST_HEAD(&state->queue);
+	spin_lock_init(&state->lock);
+
+	/* Media Entity */
+
+	video_dev->entity.ops = &sun6i_csi_capture_media_ops;
+
+	/* Media Pad */
+
+	pad->flags = MEDIA_PAD_FL_SINK | MEDIA_PAD_FL_MUST_CONNECT;
+
+	ret = media_entity_pads_init(&video_dev->entity, 1, pad);
+	if (ret < 0)
+		return ret;
+
+	/* Queue */
+
+	mutex_init(&capture->lock);
+
+	queue->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
+	queue->io_modes = VB2_MMAP | VB2_DMABUF;
+	queue->buf_struct_size = sizeof(struct sun6i_csi_buffer);
+	queue->ops = &sun6i_csi_capture_queue_ops;
+	queue->mem_ops = &vb2_dma_contig_memops;
+	queue->min_buffers_needed = 2;
+	queue->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC;
+	queue->lock = &capture->lock;
+	queue->dev = csi_dev->dev;
+	queue->drv_priv = csi_dev;
+
+	ret = vb2_queue_init(queue);
+	if (ret) {
+		v4l2_err(v4l2_dev, "failed to initialize vb2 queue: %d\n", ret);
+		goto error_media_entity;
+	}
+
+	/* V4L2 Format */
+
+	format->type = queue->type;
+	pix_format->pixelformat = sun6i_csi_capture_formats[0].pixelformat;
+	pix_format->width = 1280;
+	pix_format->height = 720;
+	pix_format->field = V4L2_FIELD_NONE;
+
+	sun6i_csi_capture_format_prepare(format);
+
+	/* Video Device */
+
+	strscpy(video_dev->name, SUN6I_CSI_CAPTURE_NAME,
+		sizeof(video_dev->name));
+	video_dev->device_caps = V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_STREAMING;
+	video_dev->vfl_dir = VFL_DIR_RX;
+	video_dev->release = video_device_release_empty;
+	video_dev->fops = &sun6i_csi_capture_fops;
+	video_dev->ioctl_ops = &sun6i_csi_capture_ioctl_ops;
+	video_dev->v4l2_dev = v4l2_dev;
+	video_dev->queue = queue;
+	video_dev->lock = &capture->lock;
+
+	video_set_drvdata(video_dev, csi_dev);
+
+	ret = video_register_device(video_dev, VFL_TYPE_VIDEO, -1);
+	if (ret < 0) {
+		v4l2_err(v4l2_dev, "failed to register video device: %d\n",
+			 ret);
+		goto error_media_entity;
+	}
+
+	/* Media Pad Link */
+
+	ret = media_create_pad_link(&bridge_subdev->entity,
+				    SUN6I_CSI_BRIDGE_PAD_SOURCE,
+				    &video_dev->entity, 0,
+				    csi_dev->isp_available ? 0 :
+				    MEDIA_LNK_FL_ENABLED |
+				    MEDIA_LNK_FL_IMMUTABLE);
+	if (ret < 0) {
+		v4l2_err(v4l2_dev, "failed to create %s:%u -> %s:%u link\n",
+			 bridge_subdev->entity.name,
+			 SUN6I_CSI_BRIDGE_PAD_SOURCE,
+			 video_dev->entity.name, 0);
+		goto error_video_device;
+	}
+
+	state->setup = true;
+
+	return 0;
+
+error_video_device:
+	vb2_video_unregister_device(video_dev);
+
+error_media_entity:
+	media_entity_cleanup(&video_dev->entity);
+
+	mutex_destroy(&capture->lock);
+
+	return ret;
+}
+
+void sun6i_csi_capture_cleanup(struct sun6i_csi_device *csi_dev)
+{
+	struct sun6i_csi_capture *capture = &csi_dev->capture;
+	struct video_device *video_dev = &capture->video_dev;
+
+	/* This may happen if async registration failed to complete. */
+	if (!capture->state.setup)
+		return;
+
+	vb2_video_unregister_device(video_dev);
+	media_entity_cleanup(&video_dev->entity);
+	mutex_destroy(&capture->lock);
+
+	capture->state.setup = false;
+}