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, 762 insertions, 0 deletions

diff --git a/drivers/gpu/drm/panel/panel-samsung-s6e63m0.c b/drivers/gpu/drm/panel/panel-samsung-s6e63m0.c
new file mode 100644
index 000000000..b34fa4d5d
--- /dev/null
+++ b/drivers/gpu/drm/panel/panel-samsung-s6e63m0.c
@@ -0,0 +1,762 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * S6E63M0 AMOLED LCD drm_panel driver.
+ *
+ * Copyright (C) 2019 Paweł Chmiel <pawel.mikolaj.chmiel@gmail.com>
+ * Derived from drivers/gpu/drm/panel-samsung-ld9040.c
+ *
+ * Andrzej Hajda <a.hajda@samsung.com>
+ */
+
+#include <drm/drm_modes.h>
+#include <drm/drm_panel.h>
+
+#include <linux/backlight.h>
+#include <linux/delay.h>
+#include <linux/gpio/consumer.h>
+#include <linux/module.h>
+#include <linux/regulator/consumer.h>
+#include <linux/media-bus-format.h>
+
+#include <video/mipi_display.h>
+
+#include "panel-samsung-s6e63m0.h"
+
+#define S6E63M0_LCD_ID_VALUE_M2		0xA4
+#define S6E63M0_LCD_ID_VALUE_SM2	0xB4
+#define S6E63M0_LCD_ID_VALUE_SM2_1	0xB6
+
+#define NUM_GAMMA_LEVELS	28
+#define GAMMA_TABLE_COUNT	23
+
+#define MAX_BRIGHTNESS		(NUM_GAMMA_LEVELS - 1)
+
+/* array of gamma tables for gamma value 2.2 */
+static u8 const s6e63m0_gamma_22[NUM_GAMMA_LEVELS][GAMMA_TABLE_COUNT] = {
+	/* 30 cd */
+	{ MCS_PGAMMACTL, 0x02,
+	  0x18, 0x08, 0x24, 0xA1, 0x51, 0x7B, 0xCE,
+	  0xCB, 0xC2, 0xC7, 0xCB, 0xBC, 0xDA, 0xDD,
+	  0xD3, 0x00, 0x53, 0x00, 0x52, 0x00, 0x6F, },
+	/* 40 cd */
+	{ MCS_PGAMMACTL, 0x02,
+	  0x18, 0x08, 0x24, 0x97, 0x58, 0x71, 0xCC,
+	  0xCB, 0xC0, 0xC5, 0xC9, 0xBA, 0xD9, 0xDC,
+	  0xD1, 0x00, 0x5B, 0x00, 0x5A, 0x00, 0x7A, },
+	/* 50 cd */
+	{ MCS_PGAMMACTL, 0x02,
+	  0x18, 0x08, 0x24, 0x96, 0x58, 0x72, 0xCB,
+	  0xCA, 0xBF, 0xC6, 0xC9, 0xBA, 0xD6, 0xD9,
+	  0xCD, 0x00, 0x61, 0x00, 0x61, 0x00, 0x83, },
+	/* 60 cd */
+	{ MCS_PGAMMACTL, 0x02,
+	  0x18, 0x08, 0x24, 0x91, 0x5E, 0x6E, 0xC9,
+	  0xC9, 0xBD, 0xC4, 0xC9, 0xB8, 0xD3, 0xD7,
+	  0xCA, 0x00, 0x69, 0x00, 0x67, 0x00, 0x8D, },
+	/* 70 cd */
+	{ MCS_PGAMMACTL, 0x02,
+	  0x18, 0x08, 0x24, 0x8E, 0x62, 0x6B, 0xC7,
+	  0xC9, 0xBB, 0xC3, 0xC7, 0xB7, 0xD3, 0xD7,
+	  0xCA, 0x00, 0x6E, 0x00, 0x6C, 0x00, 0x94, },
+	/* 80 cd */
+	{ MCS_PGAMMACTL, 0x02,
+	  0x18, 0x08, 0x24, 0x89, 0x68, 0x65, 0xC9,
+	  0xC9, 0xBC, 0xC1, 0xC5, 0xB6, 0xD2, 0xD5,
+	  0xC9, 0x00, 0x73, 0x00, 0x72, 0x00, 0x9A, },
+	/* 90 cd */
+	{ MCS_PGAMMACTL, 0x02,
+	  0x18, 0x08, 0x24, 0x89, 0x69, 0x64, 0xC7,
+	  0xC8, 0xBB, 0xC0, 0xC5, 0xB4, 0xD2, 0xD5,
+	  0xC9, 0x00, 0x77, 0x00, 0x76, 0x00, 0xA0, },
+	/* 100 cd */
+	{ MCS_PGAMMACTL, 0x02,
+	  0x18, 0x08, 0x24, 0x86, 0x69, 0x60, 0xC6,
+	  0xC8, 0xBA, 0xBF, 0xC4, 0xB4, 0xD0, 0xD4,
+	  0xC6, 0x00, 0x7C, 0x00, 0x7A, 0x00, 0xA7, },
+	/* 110 cd */
+	{ MCS_PGAMMACTL, 0x02,
+	  0x18, 0x08, 0x24, 0x86, 0x6A, 0x60, 0xC5,
+	  0xC7, 0xBA, 0xBD, 0xC3, 0xB2, 0xD0, 0xD4,
+	  0xC5, 0x00, 0x80, 0x00, 0x7E, 0x00, 0xAD, },
+	/* 120 cd */
+	{ MCS_PGAMMACTL, 0x02,
+	  0x18, 0x08, 0x24, 0x82, 0x6B, 0x5E, 0xC4,
+	  0xC8, 0xB9, 0xBD, 0xC2, 0xB1, 0xCE, 0xD2,
+	  0xC4, 0x00, 0x85, 0x00, 0x82, 0x00, 0xB3, },
+	/* 130 cd */
+	{ MCS_PGAMMACTL, 0x02,
+	  0x18, 0x08, 0x24, 0x8C, 0x6C, 0x60, 0xC3,
+	  0xC7, 0xB9, 0xBC, 0xC1, 0xAF, 0xCE, 0xD2,
+	  0xC3, 0x00, 0x88, 0x00, 0x86, 0x00, 0xB8, },
+	/* 140 cd */
+	{ MCS_PGAMMACTL, 0x02,
+	  0x18, 0x08, 0x24, 0x80, 0x6C, 0x5F, 0xC1,
+	  0xC6, 0xB7, 0xBC, 0xC1, 0xAE, 0xCD, 0xD0,
+	  0xC2, 0x00, 0x8C, 0x00, 0x8A, 0x00, 0xBE, },
+	/* 150 cd */
+	{ MCS_PGAMMACTL, 0x02,
+	  0x18, 0x08, 0x24, 0x80, 0x6E, 0x5F, 0xC1,
+	  0xC6, 0xB6, 0xBC, 0xC0, 0xAE, 0xCC, 0xD0,
+	  0xC2, 0x00, 0x8F, 0x00, 0x8D, 0x00, 0xC2, },
+	/* 160 cd */
+	{ MCS_PGAMMACTL, 0x02,
+	  0x18, 0x08, 0x24, 0x7F, 0x6E, 0x5F, 0xC0,
+	  0xC6, 0xB5, 0xBA, 0xBF, 0xAD, 0xCB, 0xCF,
+	  0xC0, 0x00, 0x94, 0x00, 0x91, 0x00, 0xC8, },
+	/* 170 cd */
+	{ MCS_PGAMMACTL, 0x02,
+	  0x18, 0x08, 0x24, 0x7C, 0x6D, 0x5C, 0xC0,
+	  0xC6, 0xB4, 0xBB, 0xBE, 0xAD, 0xCA, 0xCF,
+	  0xC0, 0x00, 0x96, 0x00, 0x94, 0x00, 0xCC, },
+	/* 180 cd */
+	{ MCS_PGAMMACTL, 0x02,
+	  0x18, 0x08, 0x24, 0x7B, 0x6D, 0x5B, 0xC0,
+	  0xC5, 0xB3, 0xBA, 0xBE, 0xAD, 0xCA, 0xCE,
+	  0xBF,	0x00, 0x99, 0x00, 0x97, 0x00, 0xD0, },
+	/* 190 cd */
+	{ MCS_PGAMMACTL, 0x02,
+	  0x18, 0x08, 0x24, 0x7A, 0x6D, 0x59, 0xC1,
+	  0xC5, 0xB4, 0xB8, 0xBD, 0xAC, 0xC9, 0xCE,
+	  0xBE, 0x00, 0x9D, 0x00, 0x9A, 0x00, 0xD5, },
+	/* 200 cd */
+	{ MCS_PGAMMACTL, 0x02,
+	  0x18, 0x08, 0x24, 0x79, 0x6D, 0x58, 0xC1,
+	  0xC4, 0xB4, 0xB6, 0xBD, 0xAA, 0xCA, 0xCD,
+	  0xBE, 0x00, 0x9F, 0x00, 0x9D, 0x00, 0xD9, },
+	/* 210 cd */
+	{ MCS_PGAMMACTL, 0x02,
+	  0x18, 0x08, 0x24, 0x79, 0x6D, 0x57, 0xC0,
+	  0xC4, 0xB4, 0xB7, 0xBD, 0xAA, 0xC8, 0xCC,
+	  0xBD, 0x00, 0xA2, 0x00, 0xA0, 0x00, 0xDD, },
+	/* 220 cd */
+	{ MCS_PGAMMACTL, 0x02,
+	  0x18, 0x08, 0x24, 0x78, 0x6F, 0x58, 0xBF,
+	  0xC4, 0xB3, 0xB5, 0xBB, 0xA9, 0xC8, 0xCC,
+	  0xBC, 0x00, 0xA6, 0x00, 0xA3, 0x00, 0xE2, },
+	/* 230 cd */
+	{ MCS_PGAMMACTL, 0x02,
+	  0x18, 0x08, 0x24, 0x75, 0x6F, 0x56, 0xBF,
+	  0xC3, 0xB2, 0xB6, 0xBB, 0xA8, 0xC7, 0xCB,
+	  0xBC, 0x00, 0xA8, 0x00, 0xA6, 0x00, 0xE6, },
+	/* 240 cd */
+	{ MCS_PGAMMACTL, 0x02,
+	  0x18, 0x08, 0x24, 0x76, 0x6F, 0x56, 0xC0,
+	  0xC3, 0xB2, 0xB5, 0xBA, 0xA8, 0xC6, 0xCB,
+	  0xBB, 0x00, 0xAA, 0x00, 0xA8, 0x00, 0xE9, },
+	/* 250 cd */
+	{ MCS_PGAMMACTL, 0x02,
+	  0x18, 0x08, 0x24, 0x74, 0x6D, 0x54, 0xBF,
+	  0xC3, 0xB2, 0xB4, 0xBA, 0xA7, 0xC6, 0xCA,
+	  0xBA, 0x00, 0xAD, 0x00, 0xAB, 0x00, 0xED, },
+	/* 260 cd */
+	{ MCS_PGAMMACTL, 0x02,
+	  0x18, 0x08, 0x24, 0x74, 0x6E, 0x54, 0xBD,
+	  0xC2, 0xB0, 0xB5, 0xBA, 0xA7, 0xC5, 0xC9,
+	  0xBA, 0x00, 0xB0, 0x00, 0xAE, 0x00, 0xF1, },
+	/* 270 cd */
+	{ MCS_PGAMMACTL, 0x02,
+	  0x18, 0x08, 0x24, 0x71, 0x6C, 0x50, 0xBD,
+	  0xC3, 0xB0, 0xB4, 0xB8, 0xA6, 0xC6, 0xC9,
+	  0xBB, 0x00, 0xB2, 0x00, 0xB1, 0x00, 0xF4, },
+	/* 280 cd */
+	{ MCS_PGAMMACTL, 0x02,
+	  0x18, 0x08, 0x24, 0x6E, 0x6C, 0x4D, 0xBE,
+	  0xC3, 0xB1, 0xB3, 0xB8, 0xA5, 0xC6, 0xC8,
+	  0xBB, 0x00, 0xB4, 0x00, 0xB3, 0x00, 0xF7, },
+	/* 290 cd */
+	{ MCS_PGAMMACTL, 0x02,
+	  0x18, 0x08, 0x24, 0x71, 0x70, 0x50, 0xBD,
+	  0xC1, 0xB0, 0xB2, 0xB8, 0xA4, 0xC6, 0xC7,
+	  0xBB, 0x00, 0xB6, 0x00, 0xB6, 0x00, 0xFA, },
+	/* 300 cd */
+	{ MCS_PGAMMACTL, 0x02,
+	  0x18, 0x08, 0x24, 0x70, 0x6E, 0x4E, 0xBC,
+	  0xC0, 0xAF, 0xB3, 0xB8, 0xA5, 0xC5, 0xC7,
+	  0xBB, 0x00, 0xB9, 0x00, 0xB8, 0x00, 0xFC, },
+};
+
+#define NUM_ACL_LEVELS 7
+#define ACL_TABLE_COUNT 28
+
+static u8 const s6e63m0_acl[NUM_ACL_LEVELS][ACL_TABLE_COUNT] = {
+	/* NULL ACL */
+	{ MCS_BCMODE,
+	  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+	  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+	  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+	  0x00, 0x00, 0x00 },
+	/* 40P ACL */
+	{ MCS_BCMODE,
+	  0x4D, 0x96, 0x1D, 0x00, 0x00, 0x01, 0xDF, 0x00,
+	  0x00, 0x03, 0x1F, 0x00, 0x00, 0x00, 0x00, 0x00,
+	  0x01, 0x06, 0x0C, 0x11, 0x16, 0x1C, 0x21, 0x26,
+	  0x2B, 0x31, 0x36 },
+	/* 43P ACL */
+	{ MCS_BCMODE,
+	  0x4D, 0x96, 0x1D, 0x00, 0x00, 0x01, 0xDF, 0x00,
+	  0x00, 0x03, 0x1F, 0x00, 0x00, 0x00, 0x00, 0x00,
+	  0x01, 0x07, 0x0C, 0x12, 0x18, 0x1E, 0x23, 0x29,
+	  0x2F, 0x34, 0x3A },
+	/* 45P ACL */
+	{ MCS_BCMODE,
+	  0x4D, 0x96, 0x1D, 0x00, 0x00, 0x01, 0xDF, 0x00,
+	  0x00, 0x03, 0x1F, 0x00, 0x00, 0x00, 0x00, 0x00,
+	  0x01, 0x07, 0x0D, 0x13, 0x19, 0x1F, 0x25, 0x2B,
+	  0x31, 0x37, 0x3D },
+	/* 47P ACL */
+	{ MCS_BCMODE,
+	  0x4D, 0x96, 0x1D, 0x00, 0x00, 0x01, 0xDF, 0x00,
+	  0x00, 0x03, 0x1F, 0x00, 0x00, 0x00, 0x00, 0x00,
+	  0x01, 0x07, 0x0E, 0x14, 0x1B, 0x21, 0x27, 0x2E,
+	  0x34, 0x3B, 0x41 },
+	/* 48P ACL */
+	{ MCS_BCMODE,
+	  0x4D, 0x96, 0x1D, 0x00, 0x00, 0x01, 0xDF, 0x00,
+	  0x00, 0x03, 0x1F, 0x00, 0x00, 0x00, 0x00, 0x00,
+	  0x01, 0x08, 0x0E, 0x15, 0x1B, 0x22, 0x29, 0x2F,
+	  0x36, 0x3C, 0x43 },
+	/* 50P ACL */
+	{ MCS_BCMODE,
+	  0x4D, 0x96, 0x1D, 0x00, 0x00, 0x01, 0xDF, 0x00,
+	  0x00, 0x03, 0x1F, 0x00, 0x00, 0x00, 0x00, 0x00,
+	  0x01, 0x08, 0x0F, 0x16, 0x1D, 0x24, 0x2A, 0x31,
+	  0x38, 0x3F, 0x46 },
+};
+
+/* This tells us which ACL level goes with which gamma */
+static u8 const s6e63m0_acl_per_gamma[NUM_GAMMA_LEVELS] = {
+	/* 30 - 60 cd: ACL off/NULL */
+	0, 0, 0, 0,
+	/* 70 - 250 cd: 40P ACL */
+	1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
+	/* 260 - 300 cd: 50P ACL */
+	6, 6, 6, 6, 6,
+};
+
+/* The ELVSS backlight regulator has 5 levels */
+#define S6E63M0_ELVSS_LEVELS 5
+
+static u8 const s6e63m0_elvss_offsets[S6E63M0_ELVSS_LEVELS] = {
+	0x00,   /* not set */
+	0x0D,   /* 30 cd - 100 cd */
+	0x09,   /* 110 cd - 160 cd */
+	0x07,   /* 170 cd - 200 cd */
+	0x00,   /* 210 cd - 300 cd */
+};
+
+/* This tells us which ELVSS level goes with which gamma */
+static u8 const s6e63m0_elvss_per_gamma[NUM_GAMMA_LEVELS] = {
+	/* 30 - 100 cd */
+	1, 1, 1, 1, 1, 1, 1, 1,
+	/* 110 - 160 cd */
+	2, 2, 2, 2, 2, 2,
+	/* 170 - 200 cd */
+	3, 3, 3, 3,
+	/* 210 - 300 cd */
+	4, 4, 4, 4, 4, 4, 4, 4, 4, 4,
+};
+
+struct s6e63m0 {
+	struct device *dev;
+	void *transport_data;
+	int (*dcs_read)(struct device *dev, void *trsp, const u8 cmd, u8 *val);
+	int (*dcs_write)(struct device *dev, void *trsp, const u8 *data, size_t len);
+	struct drm_panel panel;
+	struct backlight_device *bl_dev;
+	u8 lcd_type;
+	u8 elvss_pulse;
+	bool dsi_mode;
+
+	struct regulator_bulk_data supplies[2];
+	struct gpio_desc *reset_gpio;
+
+	bool prepared;
+	bool enabled;
+
+	/*
+	 * This field is tested by functions directly accessing bus before
+	 * transfer, transfer is skipped if it is set. In case of transfer
+	 * failure or unexpected response the field is set to error value.
+	 * Such construct allows to eliminate many checks in higher level
+	 * functions.
+	 */
+	int error;
+};
+
+static const struct drm_display_mode default_mode = {
+	.clock		= 25628,
+	.hdisplay	= 480,
+	.hsync_start	= 480 + 16,
+	.hsync_end	= 480 + 16 + 2,
+	.htotal		= 480 + 16 + 2 + 16,
+	.vdisplay	= 800,
+	.vsync_start	= 800 + 28,
+	.vsync_end	= 800 + 28 + 2,
+	.vtotal		= 800 + 28 + 2 + 1,
+	.width_mm	= 53,
+	.height_mm	= 89,
+	.flags		= DRM_MODE_FLAG_NVSYNC | DRM_MODE_FLAG_NHSYNC,
+};
+
+static inline struct s6e63m0 *panel_to_s6e63m0(struct drm_panel *panel)
+{
+	return container_of(panel, struct s6e63m0, panel);
+}
+
+static int s6e63m0_clear_error(struct s6e63m0 *ctx)
+{
+	int ret = ctx->error;
+
+	ctx->error = 0;
+	return ret;
+}
+
+static void s6e63m0_dcs_read(struct s6e63m0 *ctx, const u8 cmd, u8 *data)
+{
+	if (ctx->error < 0)
+		return;
+
+	ctx->error = ctx->dcs_read(ctx->dev, ctx->transport_data, cmd, data);
+}
+
+static void s6e63m0_dcs_write(struct s6e63m0 *ctx, const u8 *data, size_t len)
+{
+	if (ctx->error < 0 || len == 0)
+		return;
+
+	ctx->error = ctx->dcs_write(ctx->dev, ctx->transport_data, data, len);
+}
+
+#define s6e63m0_dcs_write_seq_static(ctx, seq ...) \
+	({ \
+		static const u8 d[] = { seq }; \
+		s6e63m0_dcs_write(ctx, d, ARRAY_SIZE(d)); \
+	})
+
+static int s6e63m0_check_lcd_type(struct s6e63m0 *ctx)
+{
+	u8 id1, id2, id3;
+	int ret;
+
+	s6e63m0_dcs_read(ctx, MCS_READ_ID1, &id1);
+	s6e63m0_dcs_read(ctx, MCS_READ_ID2, &id2);
+	s6e63m0_dcs_read(ctx, MCS_READ_ID3, &id3);
+
+	ret = s6e63m0_clear_error(ctx);
+	if (ret) {
+		dev_err(ctx->dev, "error checking LCD type (%d)\n", ret);
+		ctx->lcd_type = 0x00;
+		return ret;
+	}
+
+	dev_info(ctx->dev, "MTP ID: %02x %02x %02x\n", id1, id2, id3);
+
+	/*
+	 * We attempt to detect what panel is mounted on the controller.
+	 * The third ID byte represents the desired ELVSS pulse for
+	 * some displays.
+	 */
+	switch (id2) {
+	case S6E63M0_LCD_ID_VALUE_M2:
+		dev_info(ctx->dev, "detected LCD panel AMS397GE MIPI M2\n");
+		ctx->elvss_pulse = id3;
+		break;
+	case S6E63M0_LCD_ID_VALUE_SM2:
+	case S6E63M0_LCD_ID_VALUE_SM2_1:
+		dev_info(ctx->dev, "detected LCD panel AMS397GE MIPI SM2\n");
+		ctx->elvss_pulse = id3;
+		break;
+	default:
+		dev_info(ctx->dev, "unknown LCD panel type %02x\n", id2);
+		/* Default ELVSS pulse level */
+		ctx->elvss_pulse = 0x16;
+		break;
+	}
+
+	ctx->lcd_type = id2;
+
+	return 0;
+}
+
+static void s6e63m0_init(struct s6e63m0 *ctx)
+{
+	/*
+	 * We do not know why there is a difference in the DSI mode.
+	 * (No datasheet.)
+	 *
+	 * In the vendor driver this sequence is called
+	 * "SEQ_PANEL_CONDITION_SET" or "DCS_CMD_SEQ_PANEL_COND_SET".
+	 */
+	if (ctx->dsi_mode)
+		s6e63m0_dcs_write_seq_static(ctx, MCS_PANELCTL,
+					     0x01, 0x2c, 0x2c, 0x07, 0x07, 0x5f, 0xb3,
+					     0x6d, 0x97, 0x1d, 0x3a, 0x0f, 0x00, 0x00);
+	else
+		s6e63m0_dcs_write_seq_static(ctx, MCS_PANELCTL,
+					     0x01, 0x27, 0x27, 0x07, 0x07, 0x54, 0x9f,
+					     0x63, 0x8f, 0x1a, 0x33, 0x0d, 0x00, 0x00);
+
+	s6e63m0_dcs_write_seq_static(ctx, MCS_DISCTL,
+				     0x02, 0x03, 0x1c, 0x10, 0x10);
+	s6e63m0_dcs_write_seq_static(ctx, MCS_IFCTL,
+				     0x03, 0x00, 0x00);
+
+	s6e63m0_dcs_write_seq_static(ctx, MCS_PGAMMACTL,
+				     0x00, 0x18, 0x08, 0x24, 0x64, 0x56, 0x33,
+				     0xb6, 0xba, 0xa8, 0xac, 0xb1, 0x9d, 0xc1,
+				     0xc1, 0xb7, 0x00, 0x9c, 0x00, 0x9f, 0x00,
+				     0xd6);
+	s6e63m0_dcs_write_seq_static(ctx, MCS_PGAMMACTL,
+				     0x01);
+
+	s6e63m0_dcs_write_seq_static(ctx, MCS_SRCCTL,
+				     0x00, 0x8e, 0x07);
+	s6e63m0_dcs_write_seq_static(ctx, MCS_PENTILE_1, 0x6c);
+
+	s6e63m0_dcs_write_seq_static(ctx, MCS_GAMMA_DELTA_Y_RED,
+				     0x2c, 0x12, 0x0c, 0x0a, 0x10, 0x0e, 0x17,
+				     0x13, 0x1f, 0x1a, 0x2a, 0x24, 0x1f, 0x1b,
+				     0x1a, 0x17, 0x2b, 0x26, 0x22, 0x20, 0x3a,
+				     0x34, 0x30, 0x2c, 0x29, 0x26, 0x25, 0x23,
+				     0x21, 0x20, 0x1e, 0x1e);
+
+	s6e63m0_dcs_write_seq_static(ctx, MCS_GAMMA_DELTA_X_RED,
+				     0x00, 0x00, 0x11, 0x22, 0x33, 0x44, 0x44,
+				     0x44, 0x55, 0x55, 0x66, 0x66, 0x66, 0x66,
+				     0x66, 0x66);
+
+	s6e63m0_dcs_write_seq_static(ctx, MCS_GAMMA_DELTA_Y_GREEN,
+				     0x2c, 0x12, 0x0c, 0x0a, 0x10, 0x0e, 0x17,
+				     0x13, 0x1f, 0x1a, 0x2a, 0x24, 0x1f, 0x1b,
+				     0x1a, 0x17, 0x2b, 0x26, 0x22, 0x20, 0x3a,
+				     0x34, 0x30, 0x2c, 0x29, 0x26, 0x25, 0x23,
+				     0x21, 0x20, 0x1e, 0x1e);
+
+	s6e63m0_dcs_write_seq_static(ctx, MCS_GAMMA_DELTA_X_GREEN,
+				     0x00, 0x00, 0x11, 0x22, 0x33, 0x44, 0x44,
+				     0x44, 0x55, 0x55, 0x66, 0x66, 0x66, 0x66,
+				     0x66, 0x66);
+
+	s6e63m0_dcs_write_seq_static(ctx, MCS_GAMMA_DELTA_Y_BLUE,
+				     0x2c, 0x12, 0x0c, 0x0a, 0x10, 0x0e, 0x17,
+				     0x13, 0x1f, 0x1a, 0x2a, 0x24, 0x1f, 0x1b,
+				     0x1a, 0x17, 0x2b, 0x26, 0x22, 0x20, 0x3a,
+				     0x34, 0x30, 0x2c, 0x29, 0x26, 0x25, 0x23,
+				     0x21, 0x20, 0x1e, 0x1e);
+
+	s6e63m0_dcs_write_seq_static(ctx, MCS_GAMMA_DELTA_X_BLUE,
+				     0x00, 0x00, 0x11, 0x22, 0x33, 0x44, 0x44,
+				     0x44, 0x55, 0x55, 0x66, 0x66, 0x66, 0x66,
+				     0x66, 0x66);
+
+	s6e63m0_dcs_write_seq_static(ctx, MCS_BCMODE,
+				     0x4d, 0x96, 0x1d, 0x00, 0x00, 0x01, 0xdf,
+				     0x00, 0x00, 0x03, 0x1f, 0x00, 0x00, 0x00,
+				     0x00, 0x00, 0x00, 0x00, 0x00, 0x03, 0x06,
+				     0x09, 0x0d, 0x0f, 0x12, 0x15, 0x18);
+
+	s6e63m0_dcs_write_seq_static(ctx, MCS_TEMP_SWIRE,
+				     0x10, 0x10, 0x0b, 0x05);
+
+	s6e63m0_dcs_write_seq_static(ctx, MCS_MIECTL1,
+				     0x01);
+
+	s6e63m0_dcs_write_seq_static(ctx, MCS_ELVSS_ON,
+				     0x0b);
+}
+
+static int s6e63m0_power_on(struct s6e63m0 *ctx)
+{
+	int ret;
+
+	ret = regulator_bulk_enable(ARRAY_SIZE(ctx->supplies), ctx->supplies);
+	if (ret < 0)
+		return ret;
+
+	msleep(25);
+
+	/* Be sure to send a reset pulse */
+	gpiod_set_value(ctx->reset_gpio, 1);
+	msleep(5);
+	gpiod_set_value(ctx->reset_gpio, 0);
+	msleep(120);
+
+	return 0;
+}
+
+static int s6e63m0_power_off(struct s6e63m0 *ctx)
+{
+	int ret;
+
+	gpiod_set_value(ctx->reset_gpio, 1);
+	msleep(120);
+
+	ret = regulator_bulk_disable(ARRAY_SIZE(ctx->supplies), ctx->supplies);
+	if (ret < 0)
+		return ret;
+
+	return 0;
+}
+
+static int s6e63m0_disable(struct drm_panel *panel)
+{
+	struct s6e63m0 *ctx = panel_to_s6e63m0(panel);
+
+	if (!ctx->enabled)
+		return 0;
+
+	backlight_disable(ctx->bl_dev);
+
+	s6e63m0_dcs_write_seq_static(ctx, MIPI_DCS_SET_DISPLAY_OFF);
+	msleep(10);
+	s6e63m0_dcs_write_seq_static(ctx, MIPI_DCS_ENTER_SLEEP_MODE);
+	msleep(120);
+
+	ctx->enabled = false;
+
+	return 0;
+}
+
+static int s6e63m0_unprepare(struct drm_panel *panel)
+{
+	struct s6e63m0 *ctx = panel_to_s6e63m0(panel);
+	int ret;
+
+	if (!ctx->prepared)
+		return 0;
+
+	s6e63m0_clear_error(ctx);
+
+	ret = s6e63m0_power_off(ctx);
+	if (ret < 0)
+		return ret;
+
+	ctx->prepared = false;
+
+	return 0;
+}
+
+static int s6e63m0_prepare(struct drm_panel *panel)
+{
+	struct s6e63m0 *ctx = panel_to_s6e63m0(panel);
+	int ret;
+
+	if (ctx->prepared)
+		return 0;
+
+	ret = s6e63m0_power_on(ctx);
+	if (ret < 0)
+		return ret;
+
+	/* Magic to unlock level 2 control of the display */
+	s6e63m0_dcs_write_seq_static(ctx, MCS_LEVEL_2_KEY, 0x5a, 0x5a);
+	/* Magic to unlock MTP reading */
+	s6e63m0_dcs_write_seq_static(ctx, MCS_MTP_KEY, 0x5a, 0x5a);
+
+	ret = s6e63m0_check_lcd_type(ctx);
+	if (ret < 0)
+		return ret;
+
+	s6e63m0_init(ctx);
+
+	ret = s6e63m0_clear_error(ctx);
+
+	if (ret < 0)
+		s6e63m0_unprepare(panel);
+
+	ctx->prepared = true;
+
+	return ret;
+}
+
+static int s6e63m0_enable(struct drm_panel *panel)
+{
+	struct s6e63m0 *ctx = panel_to_s6e63m0(panel);
+
+	if (ctx->enabled)
+		return 0;
+
+	s6e63m0_dcs_write_seq_static(ctx, MIPI_DCS_EXIT_SLEEP_MODE);
+	msleep(120);
+	s6e63m0_dcs_write_seq_static(ctx, MIPI_DCS_SET_DISPLAY_ON);
+	msleep(10);
+
+	s6e63m0_dcs_write_seq_static(ctx, MCS_ERROR_CHECK,
+				     0xE7, 0x14, 0x60, 0x17, 0x0A, 0x49, 0xC3,
+				     0x8F, 0x19, 0x64, 0x91, 0x84, 0x76, 0x20,
+				     0x0F, 0x00);
+
+	backlight_enable(ctx->bl_dev);
+
+	ctx->enabled = true;
+
+	return 0;
+}
+
+static int s6e63m0_get_modes(struct drm_panel *panel,
+			     struct drm_connector *connector)
+{
+	struct drm_display_mode *mode;
+	static const u32 bus_format = MEDIA_BUS_FMT_RGB888_1X24;
+
+	mode = drm_mode_duplicate(connector->dev, &default_mode);
+	if (!mode) {
+		dev_err(panel->dev, "failed to add mode %ux%u@%u\n",
+			default_mode.hdisplay, default_mode.vdisplay,
+			drm_mode_vrefresh(&default_mode));
+		return -ENOMEM;
+	}
+
+	connector->display_info.width_mm = mode->width_mm;
+	connector->display_info.height_mm = mode->height_mm;
+	drm_display_info_set_bus_formats(&connector->display_info,
+					 &bus_format, 1);
+	connector->display_info.bus_flags = DRM_BUS_FLAG_DE_LOW |
+		DRM_BUS_FLAG_PIXDATA_DRIVE_NEGEDGE;
+
+	drm_mode_set_name(mode);
+
+	mode->type = DRM_MODE_TYPE_DRIVER | DRM_MODE_TYPE_PREFERRED;
+	drm_mode_probed_add(connector, mode);
+
+	return 1;
+}
+
+static const struct drm_panel_funcs s6e63m0_drm_funcs = {
+	.disable	= s6e63m0_disable,
+	.unprepare	= s6e63m0_unprepare,
+	.prepare	= s6e63m0_prepare,
+	.enable		= s6e63m0_enable,
+	.get_modes	= s6e63m0_get_modes,
+};
+
+static int s6e63m0_set_brightness(struct backlight_device *bd)
+{
+	struct s6e63m0 *ctx = bl_get_data(bd);
+	int brightness = bd->props.brightness;
+	u8 elvss_val;
+	u8 elvss_cmd_set[5];
+	int i;
+
+	/* Adjust ELVSS to candela level */
+	i = s6e63m0_elvss_per_gamma[brightness];
+	elvss_val = ctx->elvss_pulse + s6e63m0_elvss_offsets[i];
+	if (elvss_val > 0x1f)
+		elvss_val = 0x1f;
+	elvss_cmd_set[0] = MCS_TEMP_SWIRE;
+	elvss_cmd_set[1] = elvss_val;
+	elvss_cmd_set[2] = elvss_val;
+	elvss_cmd_set[3] = elvss_val;
+	elvss_cmd_set[4] = elvss_val;
+	s6e63m0_dcs_write(ctx, elvss_cmd_set, 5);
+
+	/* Update the ACL per gamma value */
+	i = s6e63m0_acl_per_gamma[brightness];
+	s6e63m0_dcs_write(ctx, s6e63m0_acl[i],
+			  ARRAY_SIZE(s6e63m0_acl[i]));
+
+	/* Update gamma table */
+	s6e63m0_dcs_write(ctx, s6e63m0_gamma_22[brightness],
+			  ARRAY_SIZE(s6e63m0_gamma_22[brightness]));
+	s6e63m0_dcs_write_seq_static(ctx, MCS_PGAMMACTL, 0x03);
+
+
+	return s6e63m0_clear_error(ctx);
+}
+
+static const struct backlight_ops s6e63m0_backlight_ops = {
+	.update_status	= s6e63m0_set_brightness,
+};
+
+static int s6e63m0_backlight_register(struct s6e63m0 *ctx, u32 max_brightness)
+{
+	struct backlight_properties props = {
+		.type		= BACKLIGHT_RAW,
+		.brightness	= max_brightness,
+		.max_brightness = max_brightness,
+	};
+	struct device *dev = ctx->dev;
+	int ret = 0;
+
+	ctx->bl_dev = devm_backlight_device_register(dev, "panel", dev, ctx,
+						     &s6e63m0_backlight_ops,
+						     &props);
+	if (IS_ERR(ctx->bl_dev)) {
+		ret = PTR_ERR(ctx->bl_dev);
+		dev_err(dev, "error registering backlight device (%d)\n", ret);
+	}
+
+	return ret;
+}
+
+int s6e63m0_probe(struct device *dev, void *trsp,
+		  int (*dcs_read)(struct device *dev, void *trsp, const u8 cmd, u8 *val),
+		  int (*dcs_write)(struct device *dev, void *trsp, const u8 *data, size_t len),
+		  bool dsi_mode)
+{
+	struct s6e63m0 *ctx;
+	u32 max_brightness;
+	int ret;
+
+	ctx = devm_kzalloc(dev, sizeof(struct s6e63m0), GFP_KERNEL);
+	if (!ctx)
+		return -ENOMEM;
+
+	ctx->transport_data = trsp;
+	ctx->dsi_mode = dsi_mode;
+	ctx->dcs_read = dcs_read;
+	ctx->dcs_write = dcs_write;
+	dev_set_drvdata(dev, ctx);
+
+	ctx->dev = dev;
+	ctx->enabled = false;
+	ctx->prepared = false;
+
+	ret = device_property_read_u32(dev, "max-brightness", &max_brightness);
+	if (ret)
+		max_brightness = MAX_BRIGHTNESS;
+	if (max_brightness > MAX_BRIGHTNESS) {
+		dev_err(dev, "illegal max brightness specified\n");
+		max_brightness = MAX_BRIGHTNESS;
+	}
+
+	ctx->supplies[0].supply = "vdd3";
+	ctx->supplies[1].supply = "vci";
+	ret = devm_regulator_bulk_get(dev, ARRAY_SIZE(ctx->supplies),
+				      ctx->supplies);
+	if (ret < 0) {
+		dev_err(dev, "failed to get regulators: %d\n", ret);
+		return ret;
+	}
+
+	ctx->reset_gpio = devm_gpiod_get(dev, "reset", GPIOD_OUT_HIGH);
+	if (IS_ERR(ctx->reset_gpio)) {
+		dev_err(dev, "cannot get reset-gpios %ld\n", PTR_ERR(ctx->reset_gpio));
+		return PTR_ERR(ctx->reset_gpio);
+	}
+
+	drm_panel_init(&ctx->panel, dev, &s6e63m0_drm_funcs,
+		       dsi_mode ? DRM_MODE_CONNECTOR_DSI :
+		       DRM_MODE_CONNECTOR_DPI);
+
+	ret = s6e63m0_backlight_register(ctx, max_brightness);
+	if (ret < 0)
+		return ret;
+
+	drm_panel_add(&ctx->panel);
+
+	return 0;
+}
+EXPORT_SYMBOL_GPL(s6e63m0_probe);
+
+void s6e63m0_remove(struct device *dev)
+{
+	struct s6e63m0 *ctx = dev_get_drvdata(dev);
+
+	drm_panel_remove(&ctx->panel);
+}
+EXPORT_SYMBOL_GPL(s6e63m0_remove);
+
+MODULE_AUTHOR("Paweł Chmiel <pawel.mikolaj.chmiel@gmail.com>");
+MODULE_DESCRIPTION("s6e63m0 LCD Driver");
+MODULE_LICENSE("GPL v2");