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, 626 insertions, 0 deletions

diff --git a/drivers/media/test-drivers/vimc/vimc-debayer.c b/drivers/media/test-drivers/vimc/vimc-debayer.c
new file mode 100644
index 000000000..f671251fd
--- /dev/null
+++ b/drivers/media/test-drivers/vimc/vimc-debayer.c
@@ -0,0 +1,626 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * vimc-debayer.c Virtual Media Controller Driver
+ *
+ * Copyright (C) 2015-2017 Helen Koike <helen.fornazier@gmail.com>
+ */
+
+#include <linux/moduleparam.h>
+#include <linux/platform_device.h>
+#include <linux/vmalloc.h>
+#include <linux/v4l2-mediabus.h>
+#include <media/v4l2-ctrls.h>
+#include <media/v4l2-event.h>
+#include <media/v4l2-subdev.h>
+
+#include "vimc-common.h"
+
+enum vimc_debayer_rgb_colors {
+	VIMC_DEBAYER_RED = 0,
+	VIMC_DEBAYER_GREEN = 1,
+	VIMC_DEBAYER_BLUE = 2,
+};
+
+struct vimc_debayer_pix_map {
+	u32 code;
+	enum vimc_debayer_rgb_colors order[2][2];
+};
+
+struct vimc_debayer_device {
+	struct vimc_ent_device ved;
+	struct v4l2_subdev sd;
+	/* The active format */
+	struct v4l2_mbus_framefmt sink_fmt;
+	u32 src_code;
+	void (*set_rgb_src)(struct vimc_debayer_device *vdebayer,
+			    unsigned int lin, unsigned int col,
+			    unsigned int rgb[3]);
+	/* Values calculated when the stream starts */
+	u8 *src_frame;
+	const struct vimc_debayer_pix_map *sink_pix_map;
+	unsigned int sink_bpp;
+	unsigned int mean_win_size;
+	struct v4l2_ctrl_handler hdl;
+	struct media_pad pads[2];
+};
+
+static const struct v4l2_mbus_framefmt sink_fmt_default = {
+	.width = 640,
+	.height = 480,
+	.code = MEDIA_BUS_FMT_SRGGB8_1X8,
+	.field = V4L2_FIELD_NONE,
+	.colorspace = V4L2_COLORSPACE_SRGB,
+};
+
+static const u32 vimc_debayer_src_mbus_codes[] = {
+	MEDIA_BUS_FMT_GBR888_1X24,
+	MEDIA_BUS_FMT_BGR888_1X24,
+	MEDIA_BUS_FMT_BGR888_3X8,
+	MEDIA_BUS_FMT_RGB888_1X24,
+	MEDIA_BUS_FMT_RGB888_2X12_BE,
+	MEDIA_BUS_FMT_RGB888_2X12_LE,
+	MEDIA_BUS_FMT_RGB888_3X8,
+	MEDIA_BUS_FMT_RGB888_1X7X4_SPWG,
+	MEDIA_BUS_FMT_RGB888_1X7X4_JEIDA,
+	MEDIA_BUS_FMT_RGB888_1X32_PADHI,
+};
+
+static const struct vimc_debayer_pix_map vimc_debayer_pix_map_list[] = {
+	{
+		.code = MEDIA_BUS_FMT_SBGGR8_1X8,
+		.order = { { VIMC_DEBAYER_BLUE, VIMC_DEBAYER_GREEN },
+			   { VIMC_DEBAYER_GREEN, VIMC_DEBAYER_RED } }
+	},
+	{
+		.code = MEDIA_BUS_FMT_SGBRG8_1X8,
+		.order = { { VIMC_DEBAYER_GREEN, VIMC_DEBAYER_BLUE },
+			   { VIMC_DEBAYER_RED, VIMC_DEBAYER_GREEN } }
+	},
+	{
+		.code = MEDIA_BUS_FMT_SGRBG8_1X8,
+		.order = { { VIMC_DEBAYER_GREEN, VIMC_DEBAYER_RED },
+			   { VIMC_DEBAYER_BLUE, VIMC_DEBAYER_GREEN } }
+	},
+	{
+		.code = MEDIA_BUS_FMT_SRGGB8_1X8,
+		.order = { { VIMC_DEBAYER_RED, VIMC_DEBAYER_GREEN },
+			   { VIMC_DEBAYER_GREEN, VIMC_DEBAYER_BLUE } }
+	},
+	{
+		.code = MEDIA_BUS_FMT_SBGGR10_1X10,
+		.order = { { VIMC_DEBAYER_BLUE, VIMC_DEBAYER_GREEN },
+			   { VIMC_DEBAYER_GREEN, VIMC_DEBAYER_RED } }
+	},
+	{
+		.code = MEDIA_BUS_FMT_SGBRG10_1X10,
+		.order = { { VIMC_DEBAYER_GREEN, VIMC_DEBAYER_BLUE },
+			   { VIMC_DEBAYER_RED, VIMC_DEBAYER_GREEN } }
+	},
+	{
+		.code = MEDIA_BUS_FMT_SGRBG10_1X10,
+		.order = { { VIMC_DEBAYER_GREEN, VIMC_DEBAYER_RED },
+			   { VIMC_DEBAYER_BLUE, VIMC_DEBAYER_GREEN } }
+	},
+	{
+		.code = MEDIA_BUS_FMT_SRGGB10_1X10,
+		.order = { { VIMC_DEBAYER_RED, VIMC_DEBAYER_GREEN },
+			   { VIMC_DEBAYER_GREEN, VIMC_DEBAYER_BLUE } }
+	},
+	{
+		.code = MEDIA_BUS_FMT_SBGGR12_1X12,
+		.order = { { VIMC_DEBAYER_BLUE, VIMC_DEBAYER_GREEN },
+			   { VIMC_DEBAYER_GREEN, VIMC_DEBAYER_RED } }
+	},
+	{
+		.code = MEDIA_BUS_FMT_SGBRG12_1X12,
+		.order = { { VIMC_DEBAYER_GREEN, VIMC_DEBAYER_BLUE },
+			   { VIMC_DEBAYER_RED, VIMC_DEBAYER_GREEN } }
+	},
+	{
+		.code = MEDIA_BUS_FMT_SGRBG12_1X12,
+		.order = { { VIMC_DEBAYER_GREEN, VIMC_DEBAYER_RED },
+			   { VIMC_DEBAYER_BLUE, VIMC_DEBAYER_GREEN } }
+	},
+	{
+		.code = MEDIA_BUS_FMT_SRGGB12_1X12,
+		.order = { { VIMC_DEBAYER_RED, VIMC_DEBAYER_GREEN },
+			   { VIMC_DEBAYER_GREEN, VIMC_DEBAYER_BLUE } }
+	},
+};
+
+static const struct vimc_debayer_pix_map *vimc_debayer_pix_map_by_code(u32 code)
+{
+	unsigned int i;
+
+	for (i = 0; i < ARRAY_SIZE(vimc_debayer_pix_map_list); i++)
+		if (vimc_debayer_pix_map_list[i].code == code)
+			return &vimc_debayer_pix_map_list[i];
+
+	return NULL;
+}
+
+static bool vimc_debayer_src_code_is_valid(u32 code)
+{
+	unsigned int i;
+
+	for (i = 0; i < ARRAY_SIZE(vimc_debayer_src_mbus_codes); i++)
+		if (vimc_debayer_src_mbus_codes[i] == code)
+			return true;
+
+	return false;
+}
+
+static int vimc_debayer_init_cfg(struct v4l2_subdev *sd,
+				 struct v4l2_subdev_state *sd_state)
+{
+	struct vimc_debayer_device *vdebayer = v4l2_get_subdevdata(sd);
+	struct v4l2_mbus_framefmt *mf;
+	unsigned int i;
+
+	mf = v4l2_subdev_get_try_format(sd, sd_state, 0);
+	*mf = sink_fmt_default;
+
+	for (i = 1; i < sd->entity.num_pads; i++) {
+		mf = v4l2_subdev_get_try_format(sd, sd_state, i);
+		*mf = sink_fmt_default;
+		mf->code = vdebayer->src_code;
+	}
+
+	return 0;
+}
+
+static int vimc_debayer_enum_mbus_code(struct v4l2_subdev *sd,
+				       struct v4l2_subdev_state *sd_state,
+				       struct v4l2_subdev_mbus_code_enum *code)
+{
+	if (VIMC_IS_SRC(code->pad)) {
+		if (code->index >= ARRAY_SIZE(vimc_debayer_src_mbus_codes))
+			return -EINVAL;
+
+		code->code = vimc_debayer_src_mbus_codes[code->index];
+	} else {
+		if (code->index >= ARRAY_SIZE(vimc_debayer_pix_map_list))
+			return -EINVAL;
+
+		code->code = vimc_debayer_pix_map_list[code->index].code;
+	}
+
+	return 0;
+}
+
+static int vimc_debayer_enum_frame_size(struct v4l2_subdev *sd,
+					struct v4l2_subdev_state *sd_state,
+					struct v4l2_subdev_frame_size_enum *fse)
+{
+	if (fse->index)
+		return -EINVAL;
+
+	if (VIMC_IS_SINK(fse->pad)) {
+		const struct vimc_debayer_pix_map *vpix =
+			vimc_debayer_pix_map_by_code(fse->code);
+
+		if (!vpix)
+			return -EINVAL;
+	} else if (!vimc_debayer_src_code_is_valid(fse->code)) {
+		return -EINVAL;
+	}
+
+	fse->min_width = VIMC_FRAME_MIN_WIDTH;
+	fse->max_width = VIMC_FRAME_MAX_WIDTH;
+	fse->min_height = VIMC_FRAME_MIN_HEIGHT;
+	fse->max_height = VIMC_FRAME_MAX_HEIGHT;
+
+	return 0;
+}
+
+static int vimc_debayer_get_fmt(struct v4l2_subdev *sd,
+				struct v4l2_subdev_state *sd_state,
+				struct v4l2_subdev_format *fmt)
+{
+	struct vimc_debayer_device *vdebayer = v4l2_get_subdevdata(sd);
+
+	/* Get the current sink format */
+	fmt->format = fmt->which == V4L2_SUBDEV_FORMAT_TRY ?
+		      *v4l2_subdev_get_try_format(sd, sd_state, 0) :
+		      vdebayer->sink_fmt;
+
+	/* Set the right code for the source pad */
+	if (VIMC_IS_SRC(fmt->pad))
+		fmt->format.code = vdebayer->src_code;
+
+	return 0;
+}
+
+static void vimc_debayer_adjust_sink_fmt(struct v4l2_mbus_framefmt *fmt)
+{
+	const struct vimc_debayer_pix_map *vpix;
+
+	/* Don't accept a code that is not on the debayer table */
+	vpix = vimc_debayer_pix_map_by_code(fmt->code);
+	if (!vpix)
+		fmt->code = sink_fmt_default.code;
+
+	fmt->width = clamp_t(u32, fmt->width, VIMC_FRAME_MIN_WIDTH,
+			     VIMC_FRAME_MAX_WIDTH) & ~1;
+	fmt->height = clamp_t(u32, fmt->height, VIMC_FRAME_MIN_HEIGHT,
+			      VIMC_FRAME_MAX_HEIGHT) & ~1;
+
+	if (fmt->field == V4L2_FIELD_ANY)
+		fmt->field = sink_fmt_default.field;
+
+	vimc_colorimetry_clamp(fmt);
+}
+
+static int vimc_debayer_set_fmt(struct v4l2_subdev *sd,
+				struct v4l2_subdev_state *sd_state,
+				struct v4l2_subdev_format *fmt)
+{
+	struct vimc_debayer_device *vdebayer = v4l2_get_subdevdata(sd);
+	struct v4l2_mbus_framefmt *sink_fmt;
+	u32 *src_code;
+
+	if (fmt->which == V4L2_SUBDEV_FORMAT_ACTIVE) {
+		/* Do not change the format while stream is on */
+		if (vdebayer->src_frame)
+			return -EBUSY;
+
+		sink_fmt = &vdebayer->sink_fmt;
+		src_code = &vdebayer->src_code;
+	} else {
+		sink_fmt = v4l2_subdev_get_try_format(sd, sd_state, 0);
+		src_code = &v4l2_subdev_get_try_format(sd, sd_state, 1)->code;
+	}
+
+	/*
+	 * Do not change the format of the source pad,
+	 * it is propagated from the sink
+	 */
+	if (VIMC_IS_SRC(fmt->pad)) {
+		u32 code = fmt->format.code;
+
+		fmt->format = *sink_fmt;
+
+		if (vimc_debayer_src_code_is_valid(code))
+			*src_code = code;
+
+		fmt->format.code = *src_code;
+	} else {
+		/* Set the new format in the sink pad */
+		vimc_debayer_adjust_sink_fmt(&fmt->format);
+
+		dev_dbg(vdebayer->ved.dev, "%s: sink format update: "
+			"old:%dx%d (0x%x, %d, %d, %d, %d) "
+			"new:%dx%d (0x%x, %d, %d, %d, %d)\n", vdebayer->sd.name,
+			/* old */
+			sink_fmt->width, sink_fmt->height, sink_fmt->code,
+			sink_fmt->colorspace, sink_fmt->quantization,
+			sink_fmt->xfer_func, sink_fmt->ycbcr_enc,
+			/* new */
+			fmt->format.width, fmt->format.height, fmt->format.code,
+			fmt->format.colorspace,	fmt->format.quantization,
+			fmt->format.xfer_func, fmt->format.ycbcr_enc);
+
+		*sink_fmt = fmt->format;
+	}
+
+	return 0;
+}
+
+static const struct v4l2_subdev_pad_ops vimc_debayer_pad_ops = {
+	.init_cfg		= vimc_debayer_init_cfg,
+	.enum_mbus_code		= vimc_debayer_enum_mbus_code,
+	.enum_frame_size	= vimc_debayer_enum_frame_size,
+	.get_fmt		= vimc_debayer_get_fmt,
+	.set_fmt		= vimc_debayer_set_fmt,
+};
+
+static void vimc_debayer_process_rgb_frame(struct vimc_debayer_device *vdebayer,
+					   unsigned int lin,
+					   unsigned int col,
+					   unsigned int rgb[3])
+{
+	const struct vimc_pix_map *vpix;
+	unsigned int i, index;
+
+	vpix = vimc_pix_map_by_code(vdebayer->src_code);
+	index = VIMC_FRAME_INDEX(lin, col, vdebayer->sink_fmt.width, 3);
+	for (i = 0; i < 3; i++) {
+		switch (vpix->pixelformat) {
+		case V4L2_PIX_FMT_RGB24:
+			vdebayer->src_frame[index + i] = rgb[i];
+			break;
+		case V4L2_PIX_FMT_BGR24:
+			vdebayer->src_frame[index + i] = rgb[2 - i];
+			break;
+		}
+	}
+}
+
+static int vimc_debayer_s_stream(struct v4l2_subdev *sd, int enable)
+{
+	struct vimc_debayer_device *vdebayer = v4l2_get_subdevdata(sd);
+
+	if (enable) {
+		const struct vimc_pix_map *vpix;
+		unsigned int frame_size;
+
+		if (vdebayer->src_frame)
+			return 0;
+
+		/* Calculate the frame size of the source pad */
+		vpix = vimc_pix_map_by_code(vdebayer->src_code);
+		frame_size = vdebayer->sink_fmt.width * vdebayer->sink_fmt.height *
+				vpix->bpp;
+
+		/* Save the bytes per pixel of the sink */
+		vpix = vimc_pix_map_by_code(vdebayer->sink_fmt.code);
+		vdebayer->sink_bpp = vpix->bpp;
+
+		/* Get the corresponding pixel map from the table */
+		vdebayer->sink_pix_map =
+			vimc_debayer_pix_map_by_code(vdebayer->sink_fmt.code);
+
+		/*
+		 * Allocate the frame buffer. Use vmalloc to be able to
+		 * allocate a large amount of memory
+		 */
+		vdebayer->src_frame = vmalloc(frame_size);
+		if (!vdebayer->src_frame)
+			return -ENOMEM;
+
+	} else {
+		if (!vdebayer->src_frame)
+			return 0;
+
+		vfree(vdebayer->src_frame);
+		vdebayer->src_frame = NULL;
+	}
+
+	return 0;
+}
+
+static const struct v4l2_subdev_core_ops vimc_debayer_core_ops = {
+	.log_status = v4l2_ctrl_subdev_log_status,
+	.subscribe_event = v4l2_ctrl_subdev_subscribe_event,
+	.unsubscribe_event = v4l2_event_subdev_unsubscribe,
+};
+
+static const struct v4l2_subdev_video_ops vimc_debayer_video_ops = {
+	.s_stream = vimc_debayer_s_stream,
+};
+
+static const struct v4l2_subdev_ops vimc_debayer_ops = {
+	.core = &vimc_debayer_core_ops,
+	.pad = &vimc_debayer_pad_ops,
+	.video = &vimc_debayer_video_ops,
+};
+
+static unsigned int vimc_debayer_get_val(const u8 *bytes,
+					 const unsigned int n_bytes)
+{
+	unsigned int i;
+	unsigned int acc = 0;
+
+	for (i = 0; i < n_bytes; i++)
+		acc = acc + (bytes[i] << (8 * i));
+
+	return acc;
+}
+
+static void vimc_debayer_calc_rgb_sink(struct vimc_debayer_device *vdebayer,
+				       const u8 *frame,
+				       const unsigned int lin,
+				       const unsigned int col,
+				       unsigned int rgb[3])
+{
+	unsigned int i, seek, wlin, wcol;
+	unsigned int n_rgb[3] = {0, 0, 0};
+
+	for (i = 0; i < 3; i++)
+		rgb[i] = 0;
+
+	/*
+	 * Calculate how many we need to subtract to get to the pixel in
+	 * the top left corner of the mean window (considering the current
+	 * pixel as the center)
+	 */
+	seek = vdebayer->mean_win_size / 2;
+
+	/* Sum the values of the colors in the mean window */
+
+	dev_dbg(vdebayer->ved.dev,
+		"deb: %s: --- Calc pixel %dx%d, window mean %d, seek %d ---\n",
+		vdebayer->sd.name, lin, col, vdebayer->sink_fmt.height, seek);
+
+	/*
+	 * Iterate through all the lines in the mean window, start
+	 * with zero if the pixel is outside the frame and don't pass
+	 * the height when the pixel is in the bottom border of the
+	 * frame
+	 */
+	for (wlin = seek > lin ? 0 : lin - seek;
+	     wlin < lin + seek + 1 && wlin < vdebayer->sink_fmt.height;
+	     wlin++) {
+
+		/*
+		 * Iterate through all the columns in the mean window, start
+		 * with zero if the pixel is outside the frame and don't pass
+		 * the width when the pixel is in the right border of the
+		 * frame
+		 */
+		for (wcol = seek > col ? 0 : col - seek;
+		     wcol < col + seek + 1 && wcol < vdebayer->sink_fmt.width;
+		     wcol++) {
+			enum vimc_debayer_rgb_colors color;
+			unsigned int index;
+
+			/* Check which color this pixel is */
+			color = vdebayer->sink_pix_map->order[wlin % 2][wcol % 2];
+
+			index = VIMC_FRAME_INDEX(wlin, wcol,
+						 vdebayer->sink_fmt.width,
+						 vdebayer->sink_bpp);
+
+			dev_dbg(vdebayer->ved.dev,
+				"deb: %s: RGB CALC: frame index %d, win pos %dx%d, color %d\n",
+				vdebayer->sd.name, index, wlin, wcol, color);
+
+			/* Get its value */
+			rgb[color] = rgb[color] +
+				vimc_debayer_get_val(&frame[index],
+						     vdebayer->sink_bpp);
+
+			/* Save how many values we already added */
+			n_rgb[color]++;
+
+			dev_dbg(vdebayer->ved.dev, "deb: %s: RGB CALC: val %d, n %d\n",
+				vdebayer->sd.name, rgb[color], n_rgb[color]);
+		}
+	}
+
+	/* Calculate the mean */
+	for (i = 0; i < 3; i++) {
+		dev_dbg(vdebayer->ved.dev,
+			"deb: %s: PRE CALC: %dx%d Color %d, val %d, n %d\n",
+			vdebayer->sd.name, lin, col, i, rgb[i], n_rgb[i]);
+
+		if (n_rgb[i])
+			rgb[i] = rgb[i] / n_rgb[i];
+
+		dev_dbg(vdebayer->ved.dev,
+			"deb: %s: FINAL CALC: %dx%d Color %d, val %d\n",
+			vdebayer->sd.name, lin, col, i, rgb[i]);
+	}
+}
+
+static void *vimc_debayer_process_frame(struct vimc_ent_device *ved,
+					const void *sink_frame)
+{
+	struct vimc_debayer_device *vdebayer =
+		container_of(ved, struct vimc_debayer_device, ved);
+
+	unsigned int rgb[3];
+	unsigned int i, j;
+
+	/* If the stream in this node is not active, just return */
+	if (!vdebayer->src_frame)
+		return ERR_PTR(-EINVAL);
+
+	for (i = 0; i < vdebayer->sink_fmt.height; i++)
+		for (j = 0; j < vdebayer->sink_fmt.width; j++) {
+			vimc_debayer_calc_rgb_sink(vdebayer, sink_frame, i, j, rgb);
+			vdebayer->set_rgb_src(vdebayer, i, j, rgb);
+		}
+
+	return vdebayer->src_frame;
+}
+
+static int vimc_debayer_s_ctrl(struct v4l2_ctrl *ctrl)
+{
+	struct vimc_debayer_device *vdebayer =
+		container_of(ctrl->handler, struct vimc_debayer_device, hdl);
+
+	switch (ctrl->id) {
+	case VIMC_CID_MEAN_WIN_SIZE:
+		vdebayer->mean_win_size = ctrl->val;
+		break;
+	default:
+		return -EINVAL;
+	}
+	return 0;
+}
+
+static const struct v4l2_ctrl_ops vimc_debayer_ctrl_ops = {
+	.s_ctrl = vimc_debayer_s_ctrl,
+};
+
+static void vimc_debayer_release(struct vimc_ent_device *ved)
+{
+	struct vimc_debayer_device *vdebayer =
+		container_of(ved, struct vimc_debayer_device, ved);
+
+	v4l2_ctrl_handler_free(&vdebayer->hdl);
+	media_entity_cleanup(vdebayer->ved.ent);
+	kfree(vdebayer);
+}
+
+static const struct v4l2_ctrl_config vimc_debayer_ctrl_class = {
+	.flags = V4L2_CTRL_FLAG_READ_ONLY | V4L2_CTRL_FLAG_WRITE_ONLY,
+	.id = VIMC_CID_VIMC_CLASS,
+	.name = "VIMC Controls",
+	.type = V4L2_CTRL_TYPE_CTRL_CLASS,
+};
+
+static const struct v4l2_ctrl_config vimc_debayer_ctrl_mean_win_size = {
+	.ops = &vimc_debayer_ctrl_ops,
+	.id = VIMC_CID_MEAN_WIN_SIZE,
+	.name = "Debayer Mean Window Size",
+	.type = V4L2_CTRL_TYPE_INTEGER,
+	.min = 1,
+	.max = 25,
+	.step = 2,
+	.def = 3,
+};
+
+static struct vimc_ent_device *vimc_debayer_add(struct vimc_device *vimc,
+						const char *vcfg_name)
+{
+	struct v4l2_device *v4l2_dev = &vimc->v4l2_dev;
+	struct vimc_debayer_device *vdebayer;
+	int ret;
+
+	/* Allocate the vdebayer struct */
+	vdebayer = kzalloc(sizeof(*vdebayer), GFP_KERNEL);
+	if (!vdebayer)
+		return ERR_PTR(-ENOMEM);
+
+	/* Create controls: */
+	v4l2_ctrl_handler_init(&vdebayer->hdl, 2);
+	v4l2_ctrl_new_custom(&vdebayer->hdl, &vimc_debayer_ctrl_class, NULL);
+	v4l2_ctrl_new_custom(&vdebayer->hdl, &vimc_debayer_ctrl_mean_win_size, NULL);
+	vdebayer->sd.ctrl_handler = &vdebayer->hdl;
+	if (vdebayer->hdl.error) {
+		ret = vdebayer->hdl.error;
+		goto err_free_vdebayer;
+	}
+
+	/* Initialize ved and sd */
+	vdebayer->pads[0].flags = MEDIA_PAD_FL_SINK;
+	vdebayer->pads[1].flags = MEDIA_PAD_FL_SOURCE;
+
+	ret = vimc_ent_sd_register(&vdebayer->ved, &vdebayer->sd, v4l2_dev,
+				   vcfg_name,
+				   MEDIA_ENT_F_PROC_VIDEO_PIXEL_ENC_CONV, 2,
+				   vdebayer->pads, &vimc_debayer_ops);
+	if (ret)
+		goto err_free_hdl;
+
+	vdebayer->ved.process_frame = vimc_debayer_process_frame;
+	vdebayer->ved.dev = vimc->mdev.dev;
+	vdebayer->mean_win_size = vimc_debayer_ctrl_mean_win_size.def;
+
+	/* Initialize the frame format */
+	vdebayer->sink_fmt = sink_fmt_default;
+	/*
+	 * TODO: Add support for more output formats, we only support
+	 * RGB888 for now
+	 * NOTE: the src format is always the same as the sink, except
+	 * for the code
+	 */
+	vdebayer->src_code = MEDIA_BUS_FMT_RGB888_1X24;
+	vdebayer->set_rgb_src = vimc_debayer_process_rgb_frame;
+
+	return &vdebayer->ved;
+
+err_free_hdl:
+	v4l2_ctrl_handler_free(&vdebayer->hdl);
+err_free_vdebayer:
+	kfree(vdebayer);
+
+	return ERR_PTR(ret);
+}
+
+struct vimc_ent_type vimc_debayer_type = {
+	.add = vimc_debayer_add,
+	.release = vimc_debayer_release
+};