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, 843 insertions, 0 deletions

diff --git a/drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_dc.c b/drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_dc.c
new file mode 100644
index 000000000..a2bb5b916
--- /dev/null
+++ b/drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_dc.c
@@ -0,0 +1,843 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * Copyright (C) 2014 Traphandler
+ * Copyright (C) 2014 Free Electrons
+ * Copyright (C) 2014 Atmel
+ *
+ * Author: Jean-Jacques Hiblot <jjhiblot@traphandler.com>
+ * Author: Boris BREZILLON <boris.brezillon@free-electrons.com>
+ */
+
+#include <linux/clk.h>
+#include <linux/irq.h>
+#include <linux/irqchip.h>
+#include <linux/mfd/atmel-hlcdc.h>
+#include <linux/module.h>
+#include <linux/pm_runtime.h>
+#include <linux/platform_device.h>
+
+#include <drm/drm_atomic.h>
+#include <drm/drm_atomic_helper.h>
+#include <drm/drm_drv.h>
+#include <drm/drm_fbdev_generic.h>
+#include <drm/drm_gem_dma_helper.h>
+#include <drm/drm_gem_framebuffer_helper.h>
+#include <drm/drm_module.h>
+#include <drm/drm_probe_helper.h>
+#include <drm/drm_vblank.h>
+
+#include "atmel_hlcdc_dc.h"
+
+#define ATMEL_HLCDC_LAYER_IRQS_OFFSET		8
+
+static const struct atmel_hlcdc_layer_desc atmel_hlcdc_at91sam9n12_layers[] = {
+	{
+		.name = "base",
+		.formats = &atmel_hlcdc_plane_rgb_formats,
+		.regs_offset = 0x40,
+		.id = 0,
+		.type = ATMEL_HLCDC_BASE_LAYER,
+		.cfgs_offset = 0x2c,
+		.layout = {
+			.xstride = { 2 },
+			.default_color = 3,
+			.general_config = 4,
+		},
+		.clut_offset = 0x400,
+	},
+};
+
+static const struct atmel_hlcdc_dc_desc atmel_hlcdc_dc_at91sam9n12 = {
+	.min_width = 0,
+	.min_height = 0,
+	.max_width = 1280,
+	.max_height = 860,
+	.max_spw = 0x3f,
+	.max_vpw = 0x3f,
+	.max_hpw = 0xff,
+	.conflicting_output_formats = true,
+	.nlayers = ARRAY_SIZE(atmel_hlcdc_at91sam9n12_layers),
+	.layers = atmel_hlcdc_at91sam9n12_layers,
+};
+
+static const struct atmel_hlcdc_layer_desc atmel_hlcdc_at91sam9x5_layers[] = {
+	{
+		.name = "base",
+		.formats = &atmel_hlcdc_plane_rgb_formats,
+		.regs_offset = 0x40,
+		.id = 0,
+		.type = ATMEL_HLCDC_BASE_LAYER,
+		.cfgs_offset = 0x2c,
+		.layout = {
+			.xstride = { 2 },
+			.default_color = 3,
+			.general_config = 4,
+			.disc_pos = 5,
+			.disc_size = 6,
+		},
+		.clut_offset = 0x400,
+	},
+	{
+		.name = "overlay1",
+		.formats = &atmel_hlcdc_plane_rgb_formats,
+		.regs_offset = 0x100,
+		.id = 1,
+		.type = ATMEL_HLCDC_OVERLAY_LAYER,
+		.cfgs_offset = 0x2c,
+		.layout = {
+			.pos = 2,
+			.size = 3,
+			.xstride = { 4 },
+			.pstride = { 5 },
+			.default_color = 6,
+			.chroma_key = 7,
+			.chroma_key_mask = 8,
+			.general_config = 9,
+		},
+		.clut_offset = 0x800,
+	},
+	{
+		.name = "high-end-overlay",
+		.formats = &atmel_hlcdc_plane_rgb_and_yuv_formats,
+		.regs_offset = 0x280,
+		.id = 2,
+		.type = ATMEL_HLCDC_OVERLAY_LAYER,
+		.cfgs_offset = 0x4c,
+		.layout = {
+			.pos = 2,
+			.size = 3,
+			.memsize = 4,
+			.xstride = { 5, 7 },
+			.pstride = { 6, 8 },
+			.default_color = 9,
+			.chroma_key = 10,
+			.chroma_key_mask = 11,
+			.general_config = 12,
+			.scaler_config = 13,
+			.csc = 14,
+		},
+		.clut_offset = 0x1000,
+	},
+	{
+		.name = "cursor",
+		.formats = &atmel_hlcdc_plane_rgb_formats,
+		.regs_offset = 0x340,
+		.id = 3,
+		.type = ATMEL_HLCDC_CURSOR_LAYER,
+		.max_width = 128,
+		.max_height = 128,
+		.cfgs_offset = 0x2c,
+		.layout = {
+			.pos = 2,
+			.size = 3,
+			.xstride = { 4 },
+			.default_color = 6,
+			.chroma_key = 7,
+			.chroma_key_mask = 8,
+			.general_config = 9,
+		},
+		.clut_offset = 0x1400,
+	},
+};
+
+static const struct atmel_hlcdc_dc_desc atmel_hlcdc_dc_at91sam9x5 = {
+	.min_width = 0,
+	.min_height = 0,
+	.max_width = 800,
+	.max_height = 600,
+	.max_spw = 0x3f,
+	.max_vpw = 0x3f,
+	.max_hpw = 0xff,
+	.conflicting_output_formats = true,
+	.nlayers = ARRAY_SIZE(atmel_hlcdc_at91sam9x5_layers),
+	.layers = atmel_hlcdc_at91sam9x5_layers,
+};
+
+static const struct atmel_hlcdc_layer_desc atmel_hlcdc_sama5d3_layers[] = {
+	{
+		.name = "base",
+		.formats = &atmel_hlcdc_plane_rgb_formats,
+		.regs_offset = 0x40,
+		.id = 0,
+		.type = ATMEL_HLCDC_BASE_LAYER,
+		.cfgs_offset = 0x2c,
+		.layout = {
+			.xstride = { 2 },
+			.default_color = 3,
+			.general_config = 4,
+			.disc_pos = 5,
+			.disc_size = 6,
+		},
+		.clut_offset = 0x600,
+	},
+	{
+		.name = "overlay1",
+		.formats = &atmel_hlcdc_plane_rgb_formats,
+		.regs_offset = 0x140,
+		.id = 1,
+		.type = ATMEL_HLCDC_OVERLAY_LAYER,
+		.cfgs_offset = 0x2c,
+		.layout = {
+			.pos = 2,
+			.size = 3,
+			.xstride = { 4 },
+			.pstride = { 5 },
+			.default_color = 6,
+			.chroma_key = 7,
+			.chroma_key_mask = 8,
+			.general_config = 9,
+		},
+		.clut_offset = 0xa00,
+	},
+	{
+		.name = "overlay2",
+		.formats = &atmel_hlcdc_plane_rgb_formats,
+		.regs_offset = 0x240,
+		.id = 2,
+		.type = ATMEL_HLCDC_OVERLAY_LAYER,
+		.cfgs_offset = 0x2c,
+		.layout = {
+			.pos = 2,
+			.size = 3,
+			.xstride = { 4 },
+			.pstride = { 5 },
+			.default_color = 6,
+			.chroma_key = 7,
+			.chroma_key_mask = 8,
+			.general_config = 9,
+		},
+		.clut_offset = 0xe00,
+	},
+	{
+		.name = "high-end-overlay",
+		.formats = &atmel_hlcdc_plane_rgb_and_yuv_formats,
+		.regs_offset = 0x340,
+		.id = 3,
+		.type = ATMEL_HLCDC_OVERLAY_LAYER,
+		.cfgs_offset = 0x4c,
+		.layout = {
+			.pos = 2,
+			.size = 3,
+			.memsize = 4,
+			.xstride = { 5, 7 },
+			.pstride = { 6, 8 },
+			.default_color = 9,
+			.chroma_key = 10,
+			.chroma_key_mask = 11,
+			.general_config = 12,
+			.scaler_config = 13,
+			.phicoeffs = {
+				.x = 17,
+				.y = 33,
+			},
+			.csc = 14,
+		},
+		.clut_offset = 0x1200,
+	},
+	{
+		.name = "cursor",
+		.formats = &atmel_hlcdc_plane_rgb_formats,
+		.regs_offset = 0x440,
+		.id = 4,
+		.type = ATMEL_HLCDC_CURSOR_LAYER,
+		.max_width = 128,
+		.max_height = 128,
+		.cfgs_offset = 0x2c,
+		.layout = {
+			.pos = 2,
+			.size = 3,
+			.xstride = { 4 },
+			.pstride = { 5 },
+			.default_color = 6,
+			.chroma_key = 7,
+			.chroma_key_mask = 8,
+			.general_config = 9,
+			.scaler_config = 13,
+		},
+		.clut_offset = 0x1600,
+	},
+};
+
+static const struct atmel_hlcdc_dc_desc atmel_hlcdc_dc_sama5d3 = {
+	.min_width = 0,
+	.min_height = 0,
+	.max_width = 2048,
+	.max_height = 2048,
+	.max_spw = 0x3f,
+	.max_vpw = 0x3f,
+	.max_hpw = 0x1ff,
+	.conflicting_output_formats = true,
+	.nlayers = ARRAY_SIZE(atmel_hlcdc_sama5d3_layers),
+	.layers = atmel_hlcdc_sama5d3_layers,
+};
+
+static const struct atmel_hlcdc_layer_desc atmel_hlcdc_sama5d4_layers[] = {
+	{
+		.name = "base",
+		.formats = &atmel_hlcdc_plane_rgb_formats,
+		.regs_offset = 0x40,
+		.id = 0,
+		.type = ATMEL_HLCDC_BASE_LAYER,
+		.cfgs_offset = 0x2c,
+		.layout = {
+			.xstride = { 2 },
+			.default_color = 3,
+			.general_config = 4,
+			.disc_pos = 5,
+			.disc_size = 6,
+		},
+		.clut_offset = 0x600,
+	},
+	{
+		.name = "overlay1",
+		.formats = &atmel_hlcdc_plane_rgb_formats,
+		.regs_offset = 0x140,
+		.id = 1,
+		.type = ATMEL_HLCDC_OVERLAY_LAYER,
+		.cfgs_offset = 0x2c,
+		.layout = {
+			.pos = 2,
+			.size = 3,
+			.xstride = { 4 },
+			.pstride = { 5 },
+			.default_color = 6,
+			.chroma_key = 7,
+			.chroma_key_mask = 8,
+			.general_config = 9,
+		},
+		.clut_offset = 0xa00,
+	},
+	{
+		.name = "overlay2",
+		.formats = &atmel_hlcdc_plane_rgb_formats,
+		.regs_offset = 0x240,
+		.id = 2,
+		.type = ATMEL_HLCDC_OVERLAY_LAYER,
+		.cfgs_offset = 0x2c,
+		.layout = {
+			.pos = 2,
+			.size = 3,
+			.xstride = { 4 },
+			.pstride = { 5 },
+			.default_color = 6,
+			.chroma_key = 7,
+			.chroma_key_mask = 8,
+			.general_config = 9,
+		},
+		.clut_offset = 0xe00,
+	},
+	{
+		.name = "high-end-overlay",
+		.formats = &atmel_hlcdc_plane_rgb_and_yuv_formats,
+		.regs_offset = 0x340,
+		.id = 3,
+		.type = ATMEL_HLCDC_OVERLAY_LAYER,
+		.cfgs_offset = 0x4c,
+		.layout = {
+			.pos = 2,
+			.size = 3,
+			.memsize = 4,
+			.xstride = { 5, 7 },
+			.pstride = { 6, 8 },
+			.default_color = 9,
+			.chroma_key = 10,
+			.chroma_key_mask = 11,
+			.general_config = 12,
+			.scaler_config = 13,
+			.phicoeffs = {
+				.x = 17,
+				.y = 33,
+			},
+			.csc = 14,
+		},
+		.clut_offset = 0x1200,
+	},
+};
+
+static const struct atmel_hlcdc_dc_desc atmel_hlcdc_dc_sama5d4 = {
+	.min_width = 0,
+	.min_height = 0,
+	.max_width = 2048,
+	.max_height = 2048,
+	.max_spw = 0xff,
+	.max_vpw = 0xff,
+	.max_hpw = 0x3ff,
+	.nlayers = ARRAY_SIZE(atmel_hlcdc_sama5d4_layers),
+	.layers = atmel_hlcdc_sama5d4_layers,
+};
+
+static const struct atmel_hlcdc_layer_desc atmel_hlcdc_sam9x60_layers[] = {
+	{
+		.name = "base",
+		.formats = &atmel_hlcdc_plane_rgb_formats,
+		.regs_offset = 0x60,
+		.id = 0,
+		.type = ATMEL_HLCDC_BASE_LAYER,
+		.cfgs_offset = 0x2c,
+		.layout = {
+			.xstride = { 2 },
+			.default_color = 3,
+			.general_config = 4,
+			.disc_pos = 5,
+			.disc_size = 6,
+		},
+		.clut_offset = 0x600,
+	},
+	{
+		.name = "overlay1",
+		.formats = &atmel_hlcdc_plane_rgb_formats,
+		.regs_offset = 0x160,
+		.id = 1,
+		.type = ATMEL_HLCDC_OVERLAY_LAYER,
+		.cfgs_offset = 0x2c,
+		.layout = {
+			.pos = 2,
+			.size = 3,
+			.xstride = { 4 },
+			.pstride = { 5 },
+			.default_color = 6,
+			.chroma_key = 7,
+			.chroma_key_mask = 8,
+			.general_config = 9,
+		},
+		.clut_offset = 0xa00,
+	},
+	{
+		.name = "overlay2",
+		.formats = &atmel_hlcdc_plane_rgb_formats,
+		.regs_offset = 0x260,
+		.id = 2,
+		.type = ATMEL_HLCDC_OVERLAY_LAYER,
+		.cfgs_offset = 0x2c,
+		.layout = {
+			.pos = 2,
+			.size = 3,
+			.xstride = { 4 },
+			.pstride = { 5 },
+			.default_color = 6,
+			.chroma_key = 7,
+			.chroma_key_mask = 8,
+			.general_config = 9,
+		},
+		.clut_offset = 0xe00,
+	},
+	{
+		.name = "high-end-overlay",
+		.formats = &atmel_hlcdc_plane_rgb_and_yuv_formats,
+		.regs_offset = 0x360,
+		.id = 3,
+		.type = ATMEL_HLCDC_OVERLAY_LAYER,
+		.cfgs_offset = 0x4c,
+		.layout = {
+			.pos = 2,
+			.size = 3,
+			.memsize = 4,
+			.xstride = { 5, 7 },
+			.pstride = { 6, 8 },
+			.default_color = 9,
+			.chroma_key = 10,
+			.chroma_key_mask = 11,
+			.general_config = 12,
+			.scaler_config = 13,
+			.phicoeffs = {
+				.x = 17,
+				.y = 33,
+			},
+			.csc = 14,
+		},
+		.clut_offset = 0x1200,
+	},
+};
+
+static const struct atmel_hlcdc_dc_desc atmel_hlcdc_dc_sam9x60 = {
+	.min_width = 0,
+	.min_height = 0,
+	.max_width = 2048,
+	.max_height = 2048,
+	.max_spw = 0xff,
+	.max_vpw = 0xff,
+	.max_hpw = 0x3ff,
+	.fixed_clksrc = true,
+	.nlayers = ARRAY_SIZE(atmel_hlcdc_sam9x60_layers),
+	.layers = atmel_hlcdc_sam9x60_layers,
+};
+
+static const struct of_device_id atmel_hlcdc_of_match[] = {
+	{
+		.compatible = "atmel,at91sam9n12-hlcdc",
+		.data = &atmel_hlcdc_dc_at91sam9n12,
+	},
+	{
+		.compatible = "atmel,at91sam9x5-hlcdc",
+		.data = &atmel_hlcdc_dc_at91sam9x5,
+	},
+	{
+		.compatible = "atmel,sama5d2-hlcdc",
+		.data = &atmel_hlcdc_dc_sama5d4,
+	},
+	{
+		.compatible = "atmel,sama5d3-hlcdc",
+		.data = &atmel_hlcdc_dc_sama5d3,
+	},
+	{
+		.compatible = "atmel,sama5d4-hlcdc",
+		.data = &atmel_hlcdc_dc_sama5d4,
+	},
+	{
+		.compatible = "microchip,sam9x60-hlcdc",
+		.data = &atmel_hlcdc_dc_sam9x60,
+	},
+	{ /* sentinel */ },
+};
+MODULE_DEVICE_TABLE(of, atmel_hlcdc_of_match);
+
+enum drm_mode_status
+atmel_hlcdc_dc_mode_valid(struct atmel_hlcdc_dc *dc,
+			  const struct drm_display_mode *mode)
+{
+	int vfront_porch = mode->vsync_start - mode->vdisplay;
+	int vback_porch = mode->vtotal - mode->vsync_end;
+	int vsync_len = mode->vsync_end - mode->vsync_start;
+	int hfront_porch = mode->hsync_start - mode->hdisplay;
+	int hback_porch = mode->htotal - mode->hsync_end;
+	int hsync_len = mode->hsync_end - mode->hsync_start;
+
+	if (hsync_len > dc->desc->max_spw + 1 || hsync_len < 1)
+		return MODE_HSYNC;
+
+	if (vsync_len > dc->desc->max_spw + 1 || vsync_len < 1)
+		return MODE_VSYNC;
+
+	if (hfront_porch > dc->desc->max_hpw + 1 || hfront_porch < 1 ||
+	    hback_porch > dc->desc->max_hpw + 1 || hback_porch < 1 ||
+	    mode->hdisplay < 1)
+		return MODE_H_ILLEGAL;
+
+	if (vfront_porch > dc->desc->max_vpw + 1 || vfront_porch < 1 ||
+	    vback_porch > dc->desc->max_vpw || vback_porch < 0 ||
+	    mode->vdisplay < 1)
+		return MODE_V_ILLEGAL;
+
+	return MODE_OK;
+}
+
+static void atmel_hlcdc_layer_irq(struct atmel_hlcdc_layer *layer)
+{
+	if (!layer)
+		return;
+
+	if (layer->desc->type == ATMEL_HLCDC_BASE_LAYER ||
+	    layer->desc->type == ATMEL_HLCDC_OVERLAY_LAYER ||
+	    layer->desc->type == ATMEL_HLCDC_CURSOR_LAYER)
+		atmel_hlcdc_plane_irq(atmel_hlcdc_layer_to_plane(layer));
+}
+
+static irqreturn_t atmel_hlcdc_dc_irq_handler(int irq, void *data)
+{
+	struct drm_device *dev = data;
+	struct atmel_hlcdc_dc *dc = dev->dev_private;
+	unsigned long status;
+	unsigned int imr, isr;
+	int i;
+
+	regmap_read(dc->hlcdc->regmap, ATMEL_HLCDC_IMR, &imr);
+	regmap_read(dc->hlcdc->regmap, ATMEL_HLCDC_ISR, &isr);
+	status = imr & isr;
+	if (!status)
+		return IRQ_NONE;
+
+	if (status & ATMEL_HLCDC_SOF)
+		atmel_hlcdc_crtc_irq(dc->crtc);
+
+	for (i = 0; i < ATMEL_HLCDC_MAX_LAYERS; i++) {
+		if (ATMEL_HLCDC_LAYER_STATUS(i) & status)
+			atmel_hlcdc_layer_irq(dc->layers[i]);
+	}
+
+	return IRQ_HANDLED;
+}
+
+static void atmel_hlcdc_dc_irq_postinstall(struct drm_device *dev)
+{
+	struct atmel_hlcdc_dc *dc = dev->dev_private;
+	unsigned int cfg = 0;
+	int i;
+
+	/* Enable interrupts on activated layers */
+	for (i = 0; i < ATMEL_HLCDC_MAX_LAYERS; i++) {
+		if (dc->layers[i])
+			cfg |= ATMEL_HLCDC_LAYER_STATUS(i);
+	}
+
+	regmap_write(dc->hlcdc->regmap, ATMEL_HLCDC_IER, cfg);
+}
+
+static void atmel_hlcdc_dc_irq_disable(struct drm_device *dev)
+{
+	struct atmel_hlcdc_dc *dc = dev->dev_private;
+	unsigned int isr;
+
+	regmap_write(dc->hlcdc->regmap, ATMEL_HLCDC_IDR, 0xffffffff);
+	regmap_read(dc->hlcdc->regmap, ATMEL_HLCDC_ISR, &isr);
+}
+
+static int atmel_hlcdc_dc_irq_install(struct drm_device *dev, unsigned int irq)
+{
+	int ret;
+
+	atmel_hlcdc_dc_irq_disable(dev);
+
+	ret = devm_request_irq(dev->dev, irq, atmel_hlcdc_dc_irq_handler, 0,
+			       dev->driver->name, dev);
+	if (ret)
+		return ret;
+
+	atmel_hlcdc_dc_irq_postinstall(dev);
+
+	return 0;
+}
+
+static void atmel_hlcdc_dc_irq_uninstall(struct drm_device *dev)
+{
+	atmel_hlcdc_dc_irq_disable(dev);
+}
+
+static const struct drm_mode_config_funcs mode_config_funcs = {
+	.fb_create = drm_gem_fb_create,
+	.atomic_check = drm_atomic_helper_check,
+	.atomic_commit = drm_atomic_helper_commit,
+};
+
+static int atmel_hlcdc_dc_modeset_init(struct drm_device *dev)
+{
+	struct atmel_hlcdc_dc *dc = dev->dev_private;
+	int ret;
+
+	drm_mode_config_init(dev);
+
+	ret = atmel_hlcdc_create_outputs(dev);
+	if (ret) {
+		dev_err(dev->dev, "failed to create HLCDC outputs: %d\n", ret);
+		return ret;
+	}
+
+	ret = atmel_hlcdc_create_planes(dev);
+	if (ret) {
+		dev_err(dev->dev, "failed to create planes: %d\n", ret);
+		return ret;
+	}
+
+	ret = atmel_hlcdc_crtc_create(dev);
+	if (ret) {
+		dev_err(dev->dev, "failed to create crtc\n");
+		return ret;
+	}
+
+	dev->mode_config.min_width = dc->desc->min_width;
+	dev->mode_config.min_height = dc->desc->min_height;
+	dev->mode_config.max_width = dc->desc->max_width;
+	dev->mode_config.max_height = dc->desc->max_height;
+	dev->mode_config.funcs = &mode_config_funcs;
+	dev->mode_config.async_page_flip = true;
+
+	return 0;
+}
+
+static int atmel_hlcdc_dc_load(struct drm_device *dev)
+{
+	struct platform_device *pdev = to_platform_device(dev->dev);
+	const struct of_device_id *match;
+	struct atmel_hlcdc_dc *dc;
+	int ret;
+
+	match = of_match_node(atmel_hlcdc_of_match, dev->dev->parent->of_node);
+	if (!match) {
+		dev_err(&pdev->dev, "invalid compatible string\n");
+		return -ENODEV;
+	}
+
+	if (!match->data) {
+		dev_err(&pdev->dev, "invalid hlcdc description\n");
+		return -EINVAL;
+	}
+
+	dc = devm_kzalloc(dev->dev, sizeof(*dc), GFP_KERNEL);
+	if (!dc)
+		return -ENOMEM;
+
+	dc->desc = match->data;
+	dc->hlcdc = dev_get_drvdata(dev->dev->parent);
+	dev->dev_private = dc;
+
+	ret = clk_prepare_enable(dc->hlcdc->periph_clk);
+	if (ret) {
+		dev_err(dev->dev, "failed to enable periph_clk\n");
+		return ret;
+	}
+
+	pm_runtime_enable(dev->dev);
+
+	ret = drm_vblank_init(dev, 1);
+	if (ret < 0) {
+		dev_err(dev->dev, "failed to initialize vblank\n");
+		goto err_periph_clk_disable;
+	}
+
+	ret = atmel_hlcdc_dc_modeset_init(dev);
+	if (ret < 0) {
+		dev_err(dev->dev, "failed to initialize mode setting\n");
+		goto err_periph_clk_disable;
+	}
+
+	drm_mode_config_reset(dev);
+
+	pm_runtime_get_sync(dev->dev);
+	ret = atmel_hlcdc_dc_irq_install(dev, dc->hlcdc->irq);
+	pm_runtime_put_sync(dev->dev);
+	if (ret < 0) {
+		dev_err(dev->dev, "failed to install IRQ handler\n");
+		goto err_periph_clk_disable;
+	}
+
+	platform_set_drvdata(pdev, dev);
+
+	drm_kms_helper_poll_init(dev);
+
+	return 0;
+
+err_periph_clk_disable:
+	pm_runtime_disable(dev->dev);
+	clk_disable_unprepare(dc->hlcdc->periph_clk);
+
+	return ret;
+}
+
+static void atmel_hlcdc_dc_unload(struct drm_device *dev)
+{
+	struct atmel_hlcdc_dc *dc = dev->dev_private;
+
+	drm_kms_helper_poll_fini(dev);
+	drm_atomic_helper_shutdown(dev);
+	drm_mode_config_cleanup(dev);
+
+	pm_runtime_get_sync(dev->dev);
+	atmel_hlcdc_dc_irq_uninstall(dev);
+	pm_runtime_put_sync(dev->dev);
+
+	dev->dev_private = NULL;
+
+	pm_runtime_disable(dev->dev);
+	clk_disable_unprepare(dc->hlcdc->periph_clk);
+}
+
+DEFINE_DRM_GEM_DMA_FOPS(fops);
+
+static const struct drm_driver atmel_hlcdc_dc_driver = {
+	.driver_features = DRIVER_GEM | DRIVER_MODESET | DRIVER_ATOMIC,
+	DRM_GEM_DMA_DRIVER_OPS,
+	.fops = &fops,
+	.name = "atmel-hlcdc",
+	.desc = "Atmel HLCD Controller DRM",
+	.date = "20141504",
+	.major = 1,
+	.minor = 0,
+};
+
+static int atmel_hlcdc_dc_drm_probe(struct platform_device *pdev)
+{
+	struct drm_device *ddev;
+	int ret;
+
+	ddev = drm_dev_alloc(&atmel_hlcdc_dc_driver, &pdev->dev);
+	if (IS_ERR(ddev))
+		return PTR_ERR(ddev);
+
+	ret = atmel_hlcdc_dc_load(ddev);
+	if (ret)
+		goto err_put;
+
+	ret = drm_dev_register(ddev, 0);
+	if (ret)
+		goto err_unload;
+
+	drm_fbdev_generic_setup(ddev, 24);
+
+	return 0;
+
+err_unload:
+	atmel_hlcdc_dc_unload(ddev);
+
+err_put:
+	drm_dev_put(ddev);
+
+	return ret;
+}
+
+static int atmel_hlcdc_dc_drm_remove(struct platform_device *pdev)
+{
+	struct drm_device *ddev = platform_get_drvdata(pdev);
+
+	drm_dev_unregister(ddev);
+	atmel_hlcdc_dc_unload(ddev);
+	drm_dev_put(ddev);
+
+	return 0;
+}
+
+#ifdef CONFIG_PM_SLEEP
+static int atmel_hlcdc_dc_drm_suspend(struct device *dev)
+{
+	struct drm_device *drm_dev = dev_get_drvdata(dev);
+	struct atmel_hlcdc_dc *dc = drm_dev->dev_private;
+	struct regmap *regmap = dc->hlcdc->regmap;
+	struct drm_atomic_state *state;
+
+	state = drm_atomic_helper_suspend(drm_dev);
+	if (IS_ERR(state))
+		return PTR_ERR(state);
+
+	dc->suspend.state = state;
+
+	regmap_read(regmap, ATMEL_HLCDC_IMR, &dc->suspend.imr);
+	regmap_write(regmap, ATMEL_HLCDC_IDR, dc->suspend.imr);
+	clk_disable_unprepare(dc->hlcdc->periph_clk);
+
+	return 0;
+}
+
+static int atmel_hlcdc_dc_drm_resume(struct device *dev)
+{
+	struct drm_device *drm_dev = dev_get_drvdata(dev);
+	struct atmel_hlcdc_dc *dc = drm_dev->dev_private;
+
+	clk_prepare_enable(dc->hlcdc->periph_clk);
+	regmap_write(dc->hlcdc->regmap, ATMEL_HLCDC_IER, dc->suspend.imr);
+
+	return drm_atomic_helper_resume(drm_dev, dc->suspend.state);
+}
+#endif
+
+static SIMPLE_DEV_PM_OPS(atmel_hlcdc_dc_drm_pm_ops,
+		atmel_hlcdc_dc_drm_suspend, atmel_hlcdc_dc_drm_resume);
+
+static const struct of_device_id atmel_hlcdc_dc_of_match[] = {
+	{ .compatible = "atmel,hlcdc-display-controller" },
+	{ },
+};
+
+static struct platform_driver atmel_hlcdc_dc_platform_driver = {
+	.probe	= atmel_hlcdc_dc_drm_probe,
+	.remove	= atmel_hlcdc_dc_drm_remove,
+	.driver	= {
+		.name	= "atmel-hlcdc-display-controller",
+		.pm	= &atmel_hlcdc_dc_drm_pm_ops,
+		.of_match_table = atmel_hlcdc_dc_of_match,
+	},
+};
+drm_module_platform_driver(atmel_hlcdc_dc_platform_driver);
+
+MODULE_AUTHOR("Jean-Jacques Hiblot <jjhiblot@traphandler.com>");
+MODULE_AUTHOR("Boris Brezillon <boris.brezillon@free-electrons.com>");
+MODULE_DESCRIPTION("Atmel HLCDC Display Controller DRM Driver");
+MODULE_LICENSE("GPL");
+MODULE_ALIAS("platform:atmel-hlcdc-dc");