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, 683 insertions, 0 deletions

diff --git a/drivers/media/platform/microchip/microchip-sama5d2-isc.c b/drivers/media/platform/microchip/microchip-sama5d2-isc.c
new file mode 100644
index 000000000..ac4715d91
--- /dev/null
+++ b/drivers/media/platform/microchip/microchip-sama5d2-isc.c
@@ -0,0 +1,683 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Microchip Image Sensor Controller (ISC) driver
+ *
+ * Copyright (C) 2016-2019 Microchip Technology, Inc.
+ *
+ * Author: Songjun Wu
+ * Author: Eugen Hristev <eugen.hristev@microchip.com>
+ *
+ *
+ * Sensor-->PFE-->WB-->CFA-->CC-->GAM-->CSC-->CBC-->SUB-->RLP-->DMA
+ *
+ * ISC video pipeline integrates the following submodules:
+ * PFE: Parallel Front End to sample the camera sensor input stream
+ *  WB: Programmable white balance in the Bayer domain
+ * CFA: Color filter array interpolation module
+ *  CC: Programmable color correction
+ * GAM: Gamma correction
+ * CSC: Programmable color space conversion
+ * CBC: Contrast and Brightness control
+ * SUB: This module performs YCbCr444 to YCbCr420 chrominance subsampling
+ * RLP: This module performs rounding, range limiting
+ *      and packing of the incoming data
+ */
+
+#include <linux/clk.h>
+#include <linux/clkdev.h>
+#include <linux/clk-provider.h>
+#include <linux/delay.h>
+#include <linux/interrupt.h>
+#include <linux/math64.h>
+#include <linux/module.h>
+#include <linux/of.h>
+#include <linux/of_graph.h>
+#include <linux/platform_device.h>
+#include <linux/pm_runtime.h>
+#include <linux/regmap.h>
+#include <linux/videodev2.h>
+
+#include <media/v4l2-ctrls.h>
+#include <media/v4l2-device.h>
+#include <media/v4l2-event.h>
+#include <media/v4l2-image-sizes.h>
+#include <media/v4l2-ioctl.h>
+#include <media/v4l2-fwnode.h>
+#include <media/v4l2-subdev.h>
+#include <media/videobuf2-dma-contig.h>
+
+#include "microchip-isc-regs.h"
+#include "microchip-isc.h"
+
+#define ISC_SAMA5D2_MAX_SUPPORT_WIDTH   2592
+#define ISC_SAMA5D2_MAX_SUPPORT_HEIGHT  1944
+
+#define ISC_SAMA5D2_PIPELINE \
+	(WB_ENABLE | CFA_ENABLE | CC_ENABLE | GAM_ENABLES | CSC_ENABLE | \
+	CBC_ENABLE | SUB422_ENABLE | SUB420_ENABLE)
+
+/* This is a list of the formats that the ISC can *output* */
+static const struct isc_format sama5d2_controller_formats[] = {
+	{
+		.fourcc		= V4L2_PIX_FMT_ARGB444,
+	}, {
+		.fourcc		= V4L2_PIX_FMT_ARGB555,
+	}, {
+		.fourcc		= V4L2_PIX_FMT_RGB565,
+	}, {
+		.fourcc		= V4L2_PIX_FMT_ABGR32,
+	}, {
+		.fourcc		= V4L2_PIX_FMT_XBGR32,
+	}, {
+		.fourcc		= V4L2_PIX_FMT_YUV420,
+	}, {
+		.fourcc		= V4L2_PIX_FMT_YUYV,
+	}, {
+		.fourcc		= V4L2_PIX_FMT_YUV422P,
+	}, {
+		.fourcc		= V4L2_PIX_FMT_GREY,
+	}, {
+		.fourcc		= V4L2_PIX_FMT_Y10,
+	}, {
+		.fourcc		= V4L2_PIX_FMT_SBGGR8,
+		.raw		= true,
+	}, {
+		.fourcc		= V4L2_PIX_FMT_SGBRG8,
+		.raw		= true,
+	}, {
+		.fourcc		= V4L2_PIX_FMT_SGRBG8,
+		.raw		= true,
+	}, {
+		.fourcc		= V4L2_PIX_FMT_SRGGB8,
+		.raw		= true,
+	}, {
+		.fourcc		= V4L2_PIX_FMT_SBGGR10,
+		.raw		= true,
+	}, {
+		.fourcc		= V4L2_PIX_FMT_SGBRG10,
+		.raw		= true,
+	}, {
+		.fourcc		= V4L2_PIX_FMT_SGRBG10,
+		.raw		= true,
+	}, {
+		.fourcc		= V4L2_PIX_FMT_SRGGB10,
+		.raw		= true,
+	}, {
+		.fourcc		= V4L2_PIX_FMT_SBGGR12,
+		.raw		= true,
+	}, {
+		.fourcc		= V4L2_PIX_FMT_SGBRG12,
+		.raw		= true,
+	}, {
+		.fourcc		= V4L2_PIX_FMT_SGRBG12,
+		.raw		= true,
+	}, {
+		.fourcc		= V4L2_PIX_FMT_SRGGB12,
+		.raw		= true,
+	},
+};
+
+/* This is a list of formats that the ISC can receive as *input* */
+static struct isc_format sama5d2_formats_list[] = {
+	{
+		.fourcc		= V4L2_PIX_FMT_SBGGR8,
+		.mbus_code	= MEDIA_BUS_FMT_SBGGR8_1X8,
+		.pfe_cfg0_bps	= ISC_PFE_CFG0_BPS_EIGHT,
+		.cfa_baycfg	= ISC_BAY_CFG_BGBG,
+	},
+	{
+		.fourcc		= V4L2_PIX_FMT_SGBRG8,
+		.mbus_code	= MEDIA_BUS_FMT_SGBRG8_1X8,
+		.pfe_cfg0_bps	= ISC_PFE_CFG0_BPS_EIGHT,
+		.cfa_baycfg	= ISC_BAY_CFG_GBGB,
+	},
+	{
+		.fourcc		= V4L2_PIX_FMT_SGRBG8,
+		.mbus_code	= MEDIA_BUS_FMT_SGRBG8_1X8,
+		.pfe_cfg0_bps	= ISC_PFE_CFG0_BPS_EIGHT,
+		.cfa_baycfg	= ISC_BAY_CFG_GRGR,
+	},
+	{
+		.fourcc		= V4L2_PIX_FMT_SRGGB8,
+		.mbus_code	= MEDIA_BUS_FMT_SRGGB8_1X8,
+		.pfe_cfg0_bps	= ISC_PFE_CFG0_BPS_EIGHT,
+		.cfa_baycfg	= ISC_BAY_CFG_RGRG,
+	},
+	{
+		.fourcc		= V4L2_PIX_FMT_SBGGR10,
+		.mbus_code	= MEDIA_BUS_FMT_SBGGR10_1X10,
+		.pfe_cfg0_bps	= ISC_PFG_CFG0_BPS_TEN,
+		.cfa_baycfg	= ISC_BAY_CFG_RGRG,
+	},
+	{
+		.fourcc		= V4L2_PIX_FMT_SGBRG10,
+		.mbus_code	= MEDIA_BUS_FMT_SGBRG10_1X10,
+		.pfe_cfg0_bps	= ISC_PFG_CFG0_BPS_TEN,
+		.cfa_baycfg	= ISC_BAY_CFG_GBGB,
+	},
+	{
+		.fourcc		= V4L2_PIX_FMT_SGRBG10,
+		.mbus_code	= MEDIA_BUS_FMT_SGRBG10_1X10,
+		.pfe_cfg0_bps	= ISC_PFG_CFG0_BPS_TEN,
+		.cfa_baycfg	= ISC_BAY_CFG_GRGR,
+	},
+	{
+		.fourcc		= V4L2_PIX_FMT_SRGGB10,
+		.mbus_code	= MEDIA_BUS_FMT_SRGGB10_1X10,
+		.pfe_cfg0_bps	= ISC_PFG_CFG0_BPS_TEN,
+		.cfa_baycfg	= ISC_BAY_CFG_RGRG,
+	},
+	{
+		.fourcc		= V4L2_PIX_FMT_SBGGR12,
+		.mbus_code	= MEDIA_BUS_FMT_SBGGR12_1X12,
+		.pfe_cfg0_bps	= ISC_PFG_CFG0_BPS_TWELVE,
+		.cfa_baycfg	= ISC_BAY_CFG_BGBG,
+	},
+	{
+		.fourcc		= V4L2_PIX_FMT_SGBRG12,
+		.mbus_code	= MEDIA_BUS_FMT_SGBRG12_1X12,
+		.pfe_cfg0_bps	= ISC_PFG_CFG0_BPS_TWELVE,
+		.cfa_baycfg	= ISC_BAY_CFG_GBGB,
+	},
+	{
+		.fourcc		= V4L2_PIX_FMT_SGRBG12,
+		.mbus_code	= MEDIA_BUS_FMT_SGRBG12_1X12,
+		.pfe_cfg0_bps	= ISC_PFG_CFG0_BPS_TWELVE,
+		.cfa_baycfg	= ISC_BAY_CFG_GRGR,
+	},
+	{
+		.fourcc		= V4L2_PIX_FMT_SRGGB12,
+		.mbus_code	= MEDIA_BUS_FMT_SRGGB12_1X12,
+		.pfe_cfg0_bps	= ISC_PFG_CFG0_BPS_TWELVE,
+		.cfa_baycfg	= ISC_BAY_CFG_RGRG,
+	},
+	{
+		.fourcc		= V4L2_PIX_FMT_GREY,
+		.mbus_code	= MEDIA_BUS_FMT_Y8_1X8,
+		.pfe_cfg0_bps	= ISC_PFE_CFG0_BPS_EIGHT,
+	},
+	{
+		.fourcc		= V4L2_PIX_FMT_YUYV,
+		.mbus_code	= MEDIA_BUS_FMT_YUYV8_2X8,
+		.pfe_cfg0_bps	= ISC_PFE_CFG0_BPS_EIGHT,
+	},
+	{
+		.fourcc		= V4L2_PIX_FMT_RGB565,
+		.mbus_code	= MEDIA_BUS_FMT_RGB565_2X8_LE,
+		.pfe_cfg0_bps	= ISC_PFE_CFG0_BPS_EIGHT,
+	},
+	{
+		.fourcc		= V4L2_PIX_FMT_Y10,
+		.mbus_code	= MEDIA_BUS_FMT_Y10_1X10,
+		.pfe_cfg0_bps	= ISC_PFG_CFG0_BPS_TEN,
+	},
+
+};
+
+static void isc_sama5d2_config_csc(struct isc_device *isc)
+{
+	struct regmap *regmap = isc->regmap;
+
+	/* Convert RGB to YUV */
+	regmap_write(regmap, ISC_CSC_YR_YG + isc->offsets.csc,
+		     0x42 | (0x81 << 16));
+	regmap_write(regmap, ISC_CSC_YB_OY + isc->offsets.csc,
+		     0x19 | (0x10 << 16));
+	regmap_write(regmap, ISC_CSC_CBR_CBG + isc->offsets.csc,
+		     0xFDA | (0xFB6 << 16));
+	regmap_write(regmap, ISC_CSC_CBB_OCB + isc->offsets.csc,
+		     0x70 | (0x80 << 16));
+	regmap_write(regmap, ISC_CSC_CRR_CRG + isc->offsets.csc,
+		     0x70 | (0xFA2 << 16));
+	regmap_write(regmap, ISC_CSC_CRB_OCR + isc->offsets.csc,
+		     0xFEE | (0x80 << 16));
+}
+
+static void isc_sama5d2_config_cbc(struct isc_device *isc)
+{
+	struct regmap *regmap = isc->regmap;
+
+	regmap_write(regmap, ISC_CBC_BRIGHT + isc->offsets.cbc,
+		     isc->ctrls.brightness);
+	regmap_write(regmap, ISC_CBC_CONTRAST + isc->offsets.cbc,
+		     isc->ctrls.contrast);
+}
+
+static void isc_sama5d2_config_cc(struct isc_device *isc)
+{
+	struct regmap *regmap = isc->regmap;
+
+	/* Configure each register at the neutral fixed point 1.0 or 0.0 */
+	regmap_write(regmap, ISC_CC_RR_RG, (1 << 8));
+	regmap_write(regmap, ISC_CC_RB_OR, 0);
+	regmap_write(regmap, ISC_CC_GR_GG, (1 << 8) << 16);
+	regmap_write(regmap, ISC_CC_GB_OG, 0);
+	regmap_write(regmap, ISC_CC_BR_BG, 0);
+	regmap_write(regmap, ISC_CC_BB_OB, (1 << 8));
+}
+
+static void isc_sama5d2_config_ctrls(struct isc_device *isc,
+				     const struct v4l2_ctrl_ops *ops)
+{
+	struct isc_ctrls *ctrls = &isc->ctrls;
+	struct v4l2_ctrl_handler *hdl = &ctrls->handler;
+
+	ctrls->contrast = 256;
+
+	v4l2_ctrl_new_std(hdl, ops, V4L2_CID_CONTRAST, -2048, 2047, 1, 256);
+}
+
+static void isc_sama5d2_config_dpc(struct isc_device *isc)
+{
+	/* This module is not present on sama5d2 pipeline */
+}
+
+static void isc_sama5d2_config_gam(struct isc_device *isc)
+{
+	/* No specific gamma configuration */
+}
+
+static void isc_sama5d2_config_rlp(struct isc_device *isc)
+{
+	struct regmap *regmap = isc->regmap;
+	u32 rlp_mode = isc->config.rlp_cfg_mode;
+
+	/*
+	 * In sama5d2, the YUV planar modes and the YUYV modes are treated
+	 * in the same way in RLP register.
+	 * Normally, YYCC mode should be Luma(n) - Color B(n) - Color R (n)
+	 * and YCYC should be Luma(n + 1) - Color B (n) - Luma (n) - Color R (n)
+	 * but in sama5d2, the YCYC mode does not exist, and YYCC must be
+	 * selected for both planar and interleaved modes, as in fact
+	 * both modes are supported.
+	 *
+	 * Thus, if the YCYC mode is selected, replace it with the
+	 * sama5d2-compliant mode which is YYCC .
+	 */
+	if ((rlp_mode & ISC_RLP_CFG_MODE_MASK) == ISC_RLP_CFG_MODE_YCYC) {
+		rlp_mode &= ~ISC_RLP_CFG_MODE_MASK;
+		rlp_mode |= ISC_RLP_CFG_MODE_YYCC;
+	}
+
+	regmap_update_bits(regmap, ISC_RLP_CFG + isc->offsets.rlp,
+			   ISC_RLP_CFG_MODE_MASK, rlp_mode);
+}
+
+static void isc_sama5d2_adapt_pipeline(struct isc_device *isc)
+{
+	isc->try_config.bits_pipeline &= ISC_SAMA5D2_PIPELINE;
+}
+
+/* Gamma table with gamma 1/2.2 */
+static const u32 isc_sama5d2_gamma_table[][GAMMA_ENTRIES] = {
+	/* 0 --> gamma 1/1.8 */
+	{      0x65,  0x66002F,  0x950025,  0xBB0020,  0xDB001D,  0xF8001A,
+	  0x1130018, 0x12B0017, 0x1420016, 0x1580014, 0x16D0013, 0x1810012,
+	  0x1940012, 0x1A60012, 0x1B80011, 0x1C90010, 0x1DA0010, 0x1EA000F,
+	  0x1FA000F, 0x209000F, 0x218000F, 0x227000E, 0x235000E, 0x243000E,
+	  0x251000E, 0x25F000D, 0x26C000D, 0x279000D, 0x286000D, 0x293000C,
+	  0x2A0000C, 0x2AC000C, 0x2B8000C, 0x2C4000C, 0x2D0000B, 0x2DC000B,
+	  0x2E7000B, 0x2F3000B, 0x2FE000B, 0x309000B, 0x314000B, 0x31F000A,
+	  0x32A000A, 0x334000B, 0x33F000A, 0x349000A, 0x354000A, 0x35E000A,
+	  0x368000A, 0x372000A, 0x37C000A, 0x386000A, 0x3900009, 0x399000A,
+	  0x3A30009, 0x3AD0009, 0x3B60009, 0x3BF000A, 0x3C90009, 0x3D20009,
+	  0x3DB0009, 0x3E40009, 0x3ED0009, 0x3F60009 },
+
+	/* 1 --> gamma 1/2 */
+	{      0x7F,  0x800034,  0xB50028,  0xDE0021, 0x100001E, 0x11E001B,
+	  0x1390019, 0x1520017, 0x16A0015, 0x1800014, 0x1940014, 0x1A80013,
+	  0x1BB0012, 0x1CD0011, 0x1DF0010, 0x1EF0010, 0x200000F, 0x20F000F,
+	  0x21F000E, 0x22D000F, 0x23C000E, 0x24A000E, 0x258000D, 0x265000D,
+	  0x273000C, 0x27F000D, 0x28C000C, 0x299000C, 0x2A5000C, 0x2B1000B,
+	  0x2BC000C, 0x2C8000B, 0x2D3000C, 0x2DF000B, 0x2EA000A, 0x2F5000A,
+	  0x2FF000B, 0x30A000A, 0x314000B, 0x31F000A, 0x329000A, 0x333000A,
+	  0x33D0009, 0x3470009, 0x350000A, 0x35A0009, 0x363000A, 0x36D0009,
+	  0x3760009, 0x37F0009, 0x3880009, 0x3910009, 0x39A0009, 0x3A30009,
+	  0x3AC0008, 0x3B40009, 0x3BD0008, 0x3C60008, 0x3CE0008, 0x3D60009,
+	  0x3DF0008, 0x3E70008, 0x3EF0008, 0x3F70008 },
+
+	/* 2 --> gamma 1/2.2 */
+	{      0x99,  0x9B0038,  0xD4002A,  0xFF0023, 0x122001F, 0x141001B,
+	  0x15D0019, 0x1760017, 0x18E0015, 0x1A30015, 0x1B80013, 0x1CC0012,
+	  0x1DE0011, 0x1F00010, 0x2010010, 0x2110010, 0x221000F, 0x230000F,
+	  0x23F000E, 0x24D000E, 0x25B000D, 0x269000C, 0x276000C, 0x283000C,
+	  0x28F000C, 0x29B000C, 0x2A7000C, 0x2B3000B, 0x2BF000B, 0x2CA000B,
+	  0x2D5000B, 0x2E0000A, 0x2EB000A, 0x2F5000A, 0x2FF000A, 0x30A000A,
+	  0x3140009, 0x31E0009, 0x327000A, 0x3310009, 0x33A0009, 0x3440009,
+	  0x34D0009, 0x3560009, 0x35F0009, 0x3680008, 0x3710008, 0x3790009,
+	  0x3820008, 0x38A0008, 0x3930008, 0x39B0008, 0x3A30008, 0x3AB0008,
+	  0x3B30008, 0x3BB0008, 0x3C30008, 0x3CB0007, 0x3D20008, 0x3DA0007,
+	  0x3E20007, 0x3E90007, 0x3F00008, 0x3F80007 },
+};
+
+static int isc_parse_dt(struct device *dev, struct isc_device *isc)
+{
+	struct device_node *np = dev->of_node;
+	struct device_node *epn = NULL;
+	struct isc_subdev_entity *subdev_entity;
+	unsigned int flags;
+	int ret;
+
+	INIT_LIST_HEAD(&isc->subdev_entities);
+
+	while (1) {
+		struct v4l2_fwnode_endpoint v4l2_epn = { .bus_type = 0 };
+
+		epn = of_graph_get_next_endpoint(np, epn);
+		if (!epn)
+			return 0;
+
+		ret = v4l2_fwnode_endpoint_parse(of_fwnode_handle(epn),
+						 &v4l2_epn);
+		if (ret) {
+			ret = -EINVAL;
+			dev_err(dev, "Could not parse the endpoint\n");
+			break;
+		}
+
+		subdev_entity = devm_kzalloc(dev, sizeof(*subdev_entity),
+					     GFP_KERNEL);
+		if (!subdev_entity) {
+			ret = -ENOMEM;
+			break;
+		}
+		subdev_entity->epn = epn;
+
+		flags = v4l2_epn.bus.parallel.flags;
+
+		if (flags & V4L2_MBUS_HSYNC_ACTIVE_LOW)
+			subdev_entity->pfe_cfg0 = ISC_PFE_CFG0_HPOL_LOW;
+
+		if (flags & V4L2_MBUS_VSYNC_ACTIVE_LOW)
+			subdev_entity->pfe_cfg0 |= ISC_PFE_CFG0_VPOL_LOW;
+
+		if (flags & V4L2_MBUS_PCLK_SAMPLE_FALLING)
+			subdev_entity->pfe_cfg0 |= ISC_PFE_CFG0_PPOL_LOW;
+
+		if (v4l2_epn.bus_type == V4L2_MBUS_BT656)
+			subdev_entity->pfe_cfg0 |= ISC_PFE_CFG0_CCIR_CRC |
+					ISC_PFE_CFG0_CCIR656;
+
+		list_add_tail(&subdev_entity->list, &isc->subdev_entities);
+	}
+	of_node_put(epn);
+
+	return ret;
+}
+
+static int microchip_isc_probe(struct platform_device *pdev)
+{
+	struct device *dev = &pdev->dev;
+	struct isc_device *isc;
+	struct resource *res;
+	void __iomem *io_base;
+	struct isc_subdev_entity *subdev_entity;
+	int irq;
+	int ret;
+	u32 ver;
+
+	isc = devm_kzalloc(dev, sizeof(*isc), GFP_KERNEL);
+	if (!isc)
+		return -ENOMEM;
+
+	platform_set_drvdata(pdev, isc);
+	isc->dev = dev;
+
+	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+	io_base = devm_ioremap_resource(dev, res);
+	if (IS_ERR(io_base))
+		return PTR_ERR(io_base);
+
+	isc->regmap = devm_regmap_init_mmio(dev, io_base, &microchip_isc_regmap_config);
+	if (IS_ERR(isc->regmap)) {
+		ret = PTR_ERR(isc->regmap);
+		dev_err(dev, "failed to init register map: %d\n", ret);
+		return ret;
+	}
+
+	irq = platform_get_irq(pdev, 0);
+	if (irq < 0)
+		return irq;
+
+	ret = devm_request_irq(dev, irq, microchip_isc_interrupt, 0,
+			       "microchip-sama5d2-isc", isc);
+	if (ret < 0) {
+		dev_err(dev, "can't register ISR for IRQ %u (ret=%i)\n",
+			irq, ret);
+		return ret;
+	}
+
+	isc->gamma_table = isc_sama5d2_gamma_table;
+	isc->gamma_max = 2;
+
+	isc->max_width = ISC_SAMA5D2_MAX_SUPPORT_WIDTH;
+	isc->max_height = ISC_SAMA5D2_MAX_SUPPORT_HEIGHT;
+
+	isc->config_dpc = isc_sama5d2_config_dpc;
+	isc->config_csc = isc_sama5d2_config_csc;
+	isc->config_cbc = isc_sama5d2_config_cbc;
+	isc->config_cc = isc_sama5d2_config_cc;
+	isc->config_gam = isc_sama5d2_config_gam;
+	isc->config_rlp = isc_sama5d2_config_rlp;
+	isc->config_ctrls = isc_sama5d2_config_ctrls;
+
+	isc->adapt_pipeline = isc_sama5d2_adapt_pipeline;
+
+	isc->offsets.csc = ISC_SAMA5D2_CSC_OFFSET;
+	isc->offsets.cbc = ISC_SAMA5D2_CBC_OFFSET;
+	isc->offsets.sub422 = ISC_SAMA5D2_SUB422_OFFSET;
+	isc->offsets.sub420 = ISC_SAMA5D2_SUB420_OFFSET;
+	isc->offsets.rlp = ISC_SAMA5D2_RLP_OFFSET;
+	isc->offsets.his = ISC_SAMA5D2_HIS_OFFSET;
+	isc->offsets.dma = ISC_SAMA5D2_DMA_OFFSET;
+	isc->offsets.version = ISC_SAMA5D2_VERSION_OFFSET;
+	isc->offsets.his_entry = ISC_SAMA5D2_HIS_ENTRY_OFFSET;
+
+	isc->controller_formats = sama5d2_controller_formats;
+	isc->controller_formats_size = ARRAY_SIZE(sama5d2_controller_formats);
+	isc->formats_list = sama5d2_formats_list;
+	isc->formats_list_size = ARRAY_SIZE(sama5d2_formats_list);
+
+	/* sama5d2-isc - 8 bits per beat */
+	isc->dcfg = ISC_DCFG_YMBSIZE_BEATS8 | ISC_DCFG_CMBSIZE_BEATS8;
+
+	/* sama5d2-isc : ISPCK is required and mandatory */
+	isc->ispck_required = true;
+
+	ret = microchip_isc_pipeline_init(isc);
+	if (ret)
+		return ret;
+
+	isc->hclock = devm_clk_get(dev, "hclock");
+	if (IS_ERR(isc->hclock)) {
+		ret = PTR_ERR(isc->hclock);
+		dev_err(dev, "failed to get hclock: %d\n", ret);
+		return ret;
+	}
+
+	ret = clk_prepare_enable(isc->hclock);
+	if (ret) {
+		dev_err(dev, "failed to enable hclock: %d\n", ret);
+		return ret;
+	}
+
+	ret = microchip_isc_clk_init(isc);
+	if (ret) {
+		dev_err(dev, "failed to init isc clock: %d\n", ret);
+		goto unprepare_hclk;
+	}
+	ret = v4l2_device_register(dev, &isc->v4l2_dev);
+	if (ret) {
+		dev_err(dev, "unable to register v4l2 device.\n");
+		goto unprepare_clk;
+	}
+
+	ret = isc_parse_dt(dev, isc);
+	if (ret) {
+		dev_err(dev, "fail to parse device tree\n");
+		goto unregister_v4l2_device;
+	}
+
+	if (list_empty(&isc->subdev_entities)) {
+		dev_err(dev, "no subdev found\n");
+		ret = -ENODEV;
+		goto unregister_v4l2_device;
+	}
+
+	list_for_each_entry(subdev_entity, &isc->subdev_entities, list) {
+		struct v4l2_async_subdev *asd;
+		struct fwnode_handle *fwnode =
+			of_fwnode_handle(subdev_entity->epn);
+
+		v4l2_async_nf_init(&subdev_entity->notifier);
+
+		asd = v4l2_async_nf_add_fwnode_remote(&subdev_entity->notifier,
+						      fwnode,
+						      struct v4l2_async_subdev);
+
+		of_node_put(subdev_entity->epn);
+		subdev_entity->epn = NULL;
+
+		if (IS_ERR(asd)) {
+			ret = PTR_ERR(asd);
+			goto cleanup_subdev;
+		}
+
+		subdev_entity->notifier.ops = &microchip_isc_async_ops;
+
+		ret = v4l2_async_nf_register(&isc->v4l2_dev,
+					     &subdev_entity->notifier);
+		if (ret) {
+			dev_err(dev, "fail to register async notifier\n");
+			goto cleanup_subdev;
+		}
+
+		if (video_is_registered(&isc->video_dev))
+			break;
+	}
+
+	regmap_read(isc->regmap, ISC_VERSION + isc->offsets.version, &ver);
+
+	ret = isc_mc_init(isc, ver);
+	if (ret < 0)
+		goto isc_probe_mc_init_err;
+
+	pm_runtime_set_active(dev);
+	pm_runtime_enable(dev);
+	pm_request_idle(dev);
+
+	isc->ispck = isc->isc_clks[ISC_ISPCK].clk;
+
+	ret = clk_prepare_enable(isc->ispck);
+	if (ret) {
+		dev_err(dev, "failed to enable ispck: %d\n", ret);
+		goto disable_pm;
+	}
+
+	/* ispck should be greater or equal to hclock */
+	ret = clk_set_rate(isc->ispck, clk_get_rate(isc->hclock));
+	if (ret) {
+		dev_err(dev, "failed to set ispck rate: %d\n", ret);
+		goto unprepare_clk;
+	}
+
+	dev_info(dev, "Microchip ISC version %x\n", ver);
+
+	return 0;
+
+unprepare_clk:
+	clk_disable_unprepare(isc->ispck);
+
+disable_pm:
+	pm_runtime_disable(dev);
+
+isc_probe_mc_init_err:
+	isc_mc_cleanup(isc);
+
+cleanup_subdev:
+	microchip_isc_subdev_cleanup(isc);
+
+unregister_v4l2_device:
+	v4l2_device_unregister(&isc->v4l2_dev);
+
+unprepare_hclk:
+	clk_disable_unprepare(isc->hclock);
+
+	microchip_isc_clk_cleanup(isc);
+
+	return ret;
+}
+
+static int microchip_isc_remove(struct platform_device *pdev)
+{
+	struct isc_device *isc = platform_get_drvdata(pdev);
+
+	pm_runtime_disable(&pdev->dev);
+
+	isc_mc_cleanup(isc);
+
+	microchip_isc_subdev_cleanup(isc);
+
+	v4l2_device_unregister(&isc->v4l2_dev);
+
+	clk_disable_unprepare(isc->ispck);
+	clk_disable_unprepare(isc->hclock);
+
+	microchip_isc_clk_cleanup(isc);
+
+	return 0;
+}
+
+static int __maybe_unused isc_runtime_suspend(struct device *dev)
+{
+	struct isc_device *isc = dev_get_drvdata(dev);
+
+	clk_disable_unprepare(isc->ispck);
+	clk_disable_unprepare(isc->hclock);
+
+	return 0;
+}
+
+static int __maybe_unused isc_runtime_resume(struct device *dev)
+{
+	struct isc_device *isc = dev_get_drvdata(dev);
+	int ret;
+
+	ret = clk_prepare_enable(isc->hclock);
+	if (ret)
+		return ret;
+
+	ret = clk_prepare_enable(isc->ispck);
+	if (ret)
+		clk_disable_unprepare(isc->hclock);
+
+	return ret;
+}
+
+static const struct dev_pm_ops microchip_isc_dev_pm_ops = {
+	SET_RUNTIME_PM_OPS(isc_runtime_suspend, isc_runtime_resume, NULL)
+};
+
+#if IS_ENABLED(CONFIG_OF)
+static const struct of_device_id microchip_isc_of_match[] = {
+	{ .compatible = "atmel,sama5d2-isc" },
+	{ }
+};
+MODULE_DEVICE_TABLE(of, microchip_isc_of_match);
+#endif
+
+static struct platform_driver microchip_isc_driver = {
+	.probe	= microchip_isc_probe,
+	.remove	= microchip_isc_remove,
+	.driver	= {
+		.name		= "microchip-sama5d2-isc",
+		.pm		= &microchip_isc_dev_pm_ops,
+		.of_match_table = of_match_ptr(microchip_isc_of_match),
+	},
+};
+
+module_platform_driver(microchip_isc_driver);
+
+MODULE_AUTHOR("Songjun Wu");
+MODULE_DESCRIPTION("The V4L2 driver for Microchip-ISC");
+MODULE_LICENSE("GPL v2");