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, 415 insertions, 0 deletions

diff --git a/drivers/gpu/drm/panel/panel-sitronix-st7789v.c b/drivers/gpu/drm/panel/panel-sitronix-st7789v.c
new file mode 100644
index 000000000..bbc4569cb
--- /dev/null
+++ b/drivers/gpu/drm/panel/panel-sitronix-st7789v.c
@@ -0,0 +1,415 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * Copyright (C) 2017 Free Electrons
+ */
+
+#include <linux/delay.h>
+#include <linux/gpio/consumer.h>
+#include <linux/module.h>
+#include <linux/regulator/consumer.h>
+#include <linux/spi/spi.h>
+
+#include <video/mipi_display.h>
+
+#include <drm/drm_device.h>
+#include <drm/drm_modes.h>
+#include <drm/drm_panel.h>
+
+#define ST7789V_COLMOD_RGB_FMT_18BITS		(6 << 4)
+#define ST7789V_COLMOD_CTRL_FMT_18BITS		(6 << 0)
+
+#define ST7789V_RAMCTRL_CMD		0xb0
+#define ST7789V_RAMCTRL_RM_RGB			BIT(4)
+#define ST7789V_RAMCTRL_DM_RGB			BIT(0)
+#define ST7789V_RAMCTRL_MAGIC			(3 << 6)
+#define ST7789V_RAMCTRL_EPF(n)			(((n) & 3) << 4)
+
+#define ST7789V_RGBCTRL_CMD		0xb1
+#define ST7789V_RGBCTRL_WO			BIT(7)
+#define ST7789V_RGBCTRL_RCM(n)			(((n) & 3) << 5)
+#define ST7789V_RGBCTRL_VSYNC_HIGH		BIT(3)
+#define ST7789V_RGBCTRL_HSYNC_HIGH		BIT(2)
+#define ST7789V_RGBCTRL_PCLK_HIGH		BIT(1)
+#define ST7789V_RGBCTRL_VBP(n)			((n) & 0x7f)
+#define ST7789V_RGBCTRL_HBP(n)			((n) & 0x1f)
+
+#define ST7789V_PORCTRL_CMD		0xb2
+#define ST7789V_PORCTRL_IDLE_BP(n)		(((n) & 0xf) << 4)
+#define ST7789V_PORCTRL_IDLE_FP(n)		((n) & 0xf)
+#define ST7789V_PORCTRL_PARTIAL_BP(n)		(((n) & 0xf) << 4)
+#define ST7789V_PORCTRL_PARTIAL_FP(n)		((n) & 0xf)
+
+#define ST7789V_GCTRL_CMD		0xb7
+#define ST7789V_GCTRL_VGHS(n)			(((n) & 7) << 4)
+#define ST7789V_GCTRL_VGLS(n)			((n) & 7)
+
+#define ST7789V_VCOMS_CMD		0xbb
+
+#define ST7789V_LCMCTRL_CMD		0xc0
+#define ST7789V_LCMCTRL_XBGR			BIT(5)
+#define ST7789V_LCMCTRL_XMX			BIT(3)
+#define ST7789V_LCMCTRL_XMH			BIT(2)
+
+#define ST7789V_VDVVRHEN_CMD		0xc2
+#define ST7789V_VDVVRHEN_CMDEN			BIT(0)
+
+#define ST7789V_VRHS_CMD		0xc3
+
+#define ST7789V_VDVS_CMD		0xc4
+
+#define ST7789V_FRCTRL2_CMD		0xc6
+
+#define ST7789V_PWCTRL1_CMD		0xd0
+#define ST7789V_PWCTRL1_MAGIC			0xa4
+#define ST7789V_PWCTRL1_AVDD(n)			(((n) & 3) << 6)
+#define ST7789V_PWCTRL1_AVCL(n)			(((n) & 3) << 4)
+#define ST7789V_PWCTRL1_VDS(n)			((n) & 3)
+
+#define ST7789V_PVGAMCTRL_CMD		0xe0
+#define ST7789V_PVGAMCTRL_JP0(n)		(((n) & 3) << 4)
+#define ST7789V_PVGAMCTRL_JP1(n)		(((n) & 3) << 4)
+#define ST7789V_PVGAMCTRL_VP0(n)		((n) & 0xf)
+#define ST7789V_PVGAMCTRL_VP1(n)		((n) & 0x3f)
+#define ST7789V_PVGAMCTRL_VP2(n)		((n) & 0x3f)
+#define ST7789V_PVGAMCTRL_VP4(n)		((n) & 0x1f)
+#define ST7789V_PVGAMCTRL_VP6(n)		((n) & 0x1f)
+#define ST7789V_PVGAMCTRL_VP13(n)		((n) & 0xf)
+#define ST7789V_PVGAMCTRL_VP20(n)		((n) & 0x7f)
+#define ST7789V_PVGAMCTRL_VP27(n)		((n) & 7)
+#define ST7789V_PVGAMCTRL_VP36(n)		(((n) & 7) << 4)
+#define ST7789V_PVGAMCTRL_VP43(n)		((n) & 0x7f)
+#define ST7789V_PVGAMCTRL_VP50(n)		((n) & 0xf)
+#define ST7789V_PVGAMCTRL_VP57(n)		((n) & 0x1f)
+#define ST7789V_PVGAMCTRL_VP59(n)		((n) & 0x1f)
+#define ST7789V_PVGAMCTRL_VP61(n)		((n) & 0x3f)
+#define ST7789V_PVGAMCTRL_VP62(n)		((n) & 0x3f)
+#define ST7789V_PVGAMCTRL_VP63(n)		(((n) & 0xf) << 4)
+
+#define ST7789V_NVGAMCTRL_CMD		0xe1
+#define ST7789V_NVGAMCTRL_JN0(n)		(((n) & 3) << 4)
+#define ST7789V_NVGAMCTRL_JN1(n)		(((n) & 3) << 4)
+#define ST7789V_NVGAMCTRL_VN0(n)		((n) & 0xf)
+#define ST7789V_NVGAMCTRL_VN1(n)		((n) & 0x3f)
+#define ST7789V_NVGAMCTRL_VN2(n)		((n) & 0x3f)
+#define ST7789V_NVGAMCTRL_VN4(n)		((n) & 0x1f)
+#define ST7789V_NVGAMCTRL_VN6(n)		((n) & 0x1f)
+#define ST7789V_NVGAMCTRL_VN13(n)		((n) & 0xf)
+#define ST7789V_NVGAMCTRL_VN20(n)		((n) & 0x7f)
+#define ST7789V_NVGAMCTRL_VN27(n)		((n) & 7)
+#define ST7789V_NVGAMCTRL_VN36(n)		(((n) & 7) << 4)
+#define ST7789V_NVGAMCTRL_VN43(n)		((n) & 0x7f)
+#define ST7789V_NVGAMCTRL_VN50(n)		((n) & 0xf)
+#define ST7789V_NVGAMCTRL_VN57(n)		((n) & 0x1f)
+#define ST7789V_NVGAMCTRL_VN59(n)		((n) & 0x1f)
+#define ST7789V_NVGAMCTRL_VN61(n)		((n) & 0x3f)
+#define ST7789V_NVGAMCTRL_VN62(n)		((n) & 0x3f)
+#define ST7789V_NVGAMCTRL_VN63(n)		(((n) & 0xf) << 4)
+
+#define ST7789V_TEST(val, func)			\
+	do {					\
+		if ((val = (func)))		\
+			return val;		\
+	} while (0)
+
+struct st7789v {
+	struct drm_panel panel;
+	struct spi_device *spi;
+	struct gpio_desc *reset;
+	struct regulator *power;
+};
+
+enum st7789v_prefix {
+	ST7789V_COMMAND = 0,
+	ST7789V_DATA = 1,
+};
+
+static inline struct st7789v *panel_to_st7789v(struct drm_panel *panel)
+{
+	return container_of(panel, struct st7789v, panel);
+}
+
+static int st7789v_spi_write(struct st7789v *ctx, enum st7789v_prefix prefix,
+			     u8 data)
+{
+	struct spi_transfer xfer = { };
+	struct spi_message msg;
+	u16 txbuf = ((prefix & 1) << 8) | data;
+
+	spi_message_init(&msg);
+
+	xfer.tx_buf = &txbuf;
+	xfer.bits_per_word = 9;
+	xfer.len = sizeof(txbuf);
+
+	spi_message_add_tail(&xfer, &msg);
+	return spi_sync(ctx->spi, &msg);
+}
+
+static int st7789v_write_command(struct st7789v *ctx, u8 cmd)
+{
+	return st7789v_spi_write(ctx, ST7789V_COMMAND, cmd);
+}
+
+static int st7789v_write_data(struct st7789v *ctx, u8 cmd)
+{
+	return st7789v_spi_write(ctx, ST7789V_DATA, cmd);
+}
+
+static const struct drm_display_mode default_mode = {
+	.clock = 7000,
+	.hdisplay = 240,
+	.hsync_start = 240 + 38,
+	.hsync_end = 240 + 38 + 10,
+	.htotal = 240 + 38 + 10 + 10,
+	.vdisplay = 320,
+	.vsync_start = 320 + 8,
+	.vsync_end = 320 + 8 + 4,
+	.vtotal = 320 + 8 + 4 + 4,
+};
+
+static int st7789v_get_modes(struct drm_panel *panel,
+			     struct drm_connector *connector)
+{
+	struct drm_display_mode *mode;
+
+	mode = drm_mode_duplicate(connector->dev, &default_mode);
+	if (!mode) {
+		dev_err(panel->dev, "failed to add mode %ux%ux@%u\n",
+			default_mode.hdisplay, default_mode.vdisplay,
+			drm_mode_vrefresh(&default_mode));
+		return -ENOMEM;
+	}
+
+	drm_mode_set_name(mode);
+
+	mode->type = DRM_MODE_TYPE_DRIVER | DRM_MODE_TYPE_PREFERRED;
+	drm_mode_probed_add(connector, mode);
+
+	connector->display_info.width_mm = 61;
+	connector->display_info.height_mm = 103;
+
+	return 1;
+}
+
+static int st7789v_prepare(struct drm_panel *panel)
+{
+	struct st7789v *ctx = panel_to_st7789v(panel);
+	int ret;
+
+	ret = regulator_enable(ctx->power);
+	if (ret)
+		return ret;
+
+	gpiod_set_value(ctx->reset, 1);
+	msleep(30);
+	gpiod_set_value(ctx->reset, 0);
+	msleep(120);
+
+	ST7789V_TEST(ret, st7789v_write_command(ctx, MIPI_DCS_EXIT_SLEEP_MODE));
+
+	/* We need to wait 120ms after a sleep out command */
+	msleep(120);
+
+	ST7789V_TEST(ret, st7789v_write_command(ctx,
+						MIPI_DCS_SET_ADDRESS_MODE));
+	ST7789V_TEST(ret, st7789v_write_data(ctx, 0));
+
+	ST7789V_TEST(ret, st7789v_write_command(ctx,
+						MIPI_DCS_SET_PIXEL_FORMAT));
+	ST7789V_TEST(ret, st7789v_write_data(ctx,
+					     (MIPI_DCS_PIXEL_FMT_18BIT << 4) |
+					     (MIPI_DCS_PIXEL_FMT_18BIT)));
+
+	ST7789V_TEST(ret, st7789v_write_command(ctx, ST7789V_PORCTRL_CMD));
+	ST7789V_TEST(ret, st7789v_write_data(ctx, 0xc));
+	ST7789V_TEST(ret, st7789v_write_data(ctx, 0xc));
+	ST7789V_TEST(ret, st7789v_write_data(ctx, 0));
+	ST7789V_TEST(ret, st7789v_write_data(ctx, ST7789V_PORCTRL_IDLE_BP(3) |
+					     ST7789V_PORCTRL_IDLE_FP(3)));
+	ST7789V_TEST(ret, st7789v_write_data(ctx,
+					     ST7789V_PORCTRL_PARTIAL_BP(3) |
+					     ST7789V_PORCTRL_PARTIAL_FP(3)));
+
+	ST7789V_TEST(ret, st7789v_write_command(ctx, ST7789V_GCTRL_CMD));
+	ST7789V_TEST(ret, st7789v_write_data(ctx, ST7789V_GCTRL_VGLS(5) |
+					     ST7789V_GCTRL_VGHS(3)));
+
+	ST7789V_TEST(ret, st7789v_write_command(ctx, ST7789V_VCOMS_CMD));
+	ST7789V_TEST(ret, st7789v_write_data(ctx, 0x2b));
+
+	ST7789V_TEST(ret, st7789v_write_command(ctx, ST7789V_LCMCTRL_CMD));
+	ST7789V_TEST(ret, st7789v_write_data(ctx, ST7789V_LCMCTRL_XMH |
+					     ST7789V_LCMCTRL_XMX |
+					     ST7789V_LCMCTRL_XBGR));
+
+	ST7789V_TEST(ret, st7789v_write_command(ctx, ST7789V_VDVVRHEN_CMD));
+	ST7789V_TEST(ret, st7789v_write_data(ctx, ST7789V_VDVVRHEN_CMDEN));
+
+	ST7789V_TEST(ret, st7789v_write_command(ctx, ST7789V_VRHS_CMD));
+	ST7789V_TEST(ret, st7789v_write_data(ctx, 0xf));
+
+	ST7789V_TEST(ret, st7789v_write_command(ctx, ST7789V_VDVS_CMD));
+	ST7789V_TEST(ret, st7789v_write_data(ctx, 0x20));
+
+	ST7789V_TEST(ret, st7789v_write_command(ctx, ST7789V_FRCTRL2_CMD));
+	ST7789V_TEST(ret, st7789v_write_data(ctx, 0xf));
+
+	ST7789V_TEST(ret, st7789v_write_command(ctx, ST7789V_PWCTRL1_CMD));
+	ST7789V_TEST(ret, st7789v_write_data(ctx, ST7789V_PWCTRL1_MAGIC));
+	ST7789V_TEST(ret, st7789v_write_data(ctx, ST7789V_PWCTRL1_AVDD(2) |
+					     ST7789V_PWCTRL1_AVCL(2) |
+					     ST7789V_PWCTRL1_VDS(1)));
+
+	ST7789V_TEST(ret, st7789v_write_command(ctx, ST7789V_PVGAMCTRL_CMD));
+	ST7789V_TEST(ret, st7789v_write_data(ctx, ST7789V_PVGAMCTRL_VP63(0xd)));
+	ST7789V_TEST(ret, st7789v_write_data(ctx, ST7789V_PVGAMCTRL_VP1(0xca)));
+	ST7789V_TEST(ret, st7789v_write_data(ctx, ST7789V_PVGAMCTRL_VP2(0xe)));
+	ST7789V_TEST(ret, st7789v_write_data(ctx, ST7789V_PVGAMCTRL_VP4(8)));
+	ST7789V_TEST(ret, st7789v_write_data(ctx, ST7789V_PVGAMCTRL_VP6(9)));
+	ST7789V_TEST(ret, st7789v_write_data(ctx, ST7789V_PVGAMCTRL_VP13(7)));
+	ST7789V_TEST(ret, st7789v_write_data(ctx, ST7789V_PVGAMCTRL_VP20(0x2d)));
+	ST7789V_TEST(ret, st7789v_write_data(ctx, ST7789V_PVGAMCTRL_VP27(0xb) |
+					     ST7789V_PVGAMCTRL_VP36(3)));
+	ST7789V_TEST(ret, st7789v_write_data(ctx, ST7789V_PVGAMCTRL_VP43(0x3d)));
+	ST7789V_TEST(ret, st7789v_write_data(ctx, ST7789V_PVGAMCTRL_JP1(3) |
+					     ST7789V_PVGAMCTRL_VP50(4)));
+	ST7789V_TEST(ret, st7789v_write_data(ctx, ST7789V_PVGAMCTRL_VP57(0xa)));
+	ST7789V_TEST(ret, st7789v_write_data(ctx, ST7789V_PVGAMCTRL_VP59(0xa)));
+	ST7789V_TEST(ret, st7789v_write_data(ctx, ST7789V_PVGAMCTRL_VP61(0x1b)));
+	ST7789V_TEST(ret, st7789v_write_data(ctx, ST7789V_PVGAMCTRL_VP62(0x28)));
+
+	ST7789V_TEST(ret, st7789v_write_command(ctx, ST7789V_NVGAMCTRL_CMD));
+	ST7789V_TEST(ret, st7789v_write_data(ctx, ST7789V_NVGAMCTRL_VN63(0xd)));
+	ST7789V_TEST(ret, st7789v_write_data(ctx, ST7789V_NVGAMCTRL_VN1(0xca)));
+	ST7789V_TEST(ret, st7789v_write_data(ctx, ST7789V_NVGAMCTRL_VN2(0xf)));
+	ST7789V_TEST(ret, st7789v_write_data(ctx, ST7789V_NVGAMCTRL_VN4(8)));
+	ST7789V_TEST(ret, st7789v_write_data(ctx, ST7789V_NVGAMCTRL_VN6(8)));
+	ST7789V_TEST(ret, st7789v_write_data(ctx, ST7789V_NVGAMCTRL_VN13(7)));
+	ST7789V_TEST(ret, st7789v_write_data(ctx, ST7789V_NVGAMCTRL_VN20(0x2e)));
+	ST7789V_TEST(ret, st7789v_write_data(ctx, ST7789V_NVGAMCTRL_VN27(0xc) |
+					     ST7789V_NVGAMCTRL_VN36(5)));
+	ST7789V_TEST(ret, st7789v_write_data(ctx, ST7789V_NVGAMCTRL_VN43(0x40)));
+	ST7789V_TEST(ret, st7789v_write_data(ctx, ST7789V_NVGAMCTRL_JN1(3) |
+					     ST7789V_NVGAMCTRL_VN50(4)));
+	ST7789V_TEST(ret, st7789v_write_data(ctx, ST7789V_NVGAMCTRL_VN57(9)));
+	ST7789V_TEST(ret, st7789v_write_data(ctx, ST7789V_NVGAMCTRL_VN59(0xb)));
+	ST7789V_TEST(ret, st7789v_write_data(ctx, ST7789V_NVGAMCTRL_VN61(0x1b)));
+	ST7789V_TEST(ret, st7789v_write_data(ctx, ST7789V_NVGAMCTRL_VN62(0x28)));
+
+	ST7789V_TEST(ret, st7789v_write_command(ctx, MIPI_DCS_ENTER_INVERT_MODE));
+
+	ST7789V_TEST(ret, st7789v_write_command(ctx, ST7789V_RAMCTRL_CMD));
+	ST7789V_TEST(ret, st7789v_write_data(ctx, ST7789V_RAMCTRL_DM_RGB |
+					     ST7789V_RAMCTRL_RM_RGB));
+	ST7789V_TEST(ret, st7789v_write_data(ctx, ST7789V_RAMCTRL_EPF(3) |
+					     ST7789V_RAMCTRL_MAGIC));
+
+	ST7789V_TEST(ret, st7789v_write_command(ctx, ST7789V_RGBCTRL_CMD));
+	ST7789V_TEST(ret, st7789v_write_data(ctx, ST7789V_RGBCTRL_WO |
+					     ST7789V_RGBCTRL_RCM(2) |
+					     ST7789V_RGBCTRL_VSYNC_HIGH |
+					     ST7789V_RGBCTRL_HSYNC_HIGH |
+					     ST7789V_RGBCTRL_PCLK_HIGH));
+	ST7789V_TEST(ret, st7789v_write_data(ctx, ST7789V_RGBCTRL_VBP(8)));
+	ST7789V_TEST(ret, st7789v_write_data(ctx, ST7789V_RGBCTRL_HBP(20)));
+
+	return 0;
+}
+
+static int st7789v_enable(struct drm_panel *panel)
+{
+	struct st7789v *ctx = panel_to_st7789v(panel);
+
+	return st7789v_write_command(ctx, MIPI_DCS_SET_DISPLAY_ON);
+}
+
+static int st7789v_disable(struct drm_panel *panel)
+{
+	struct st7789v *ctx = panel_to_st7789v(panel);
+	int ret;
+
+	ST7789V_TEST(ret, st7789v_write_command(ctx, MIPI_DCS_SET_DISPLAY_OFF));
+
+	return 0;
+}
+
+static int st7789v_unprepare(struct drm_panel *panel)
+{
+	struct st7789v *ctx = panel_to_st7789v(panel);
+	int ret;
+
+	ST7789V_TEST(ret, st7789v_write_command(ctx, MIPI_DCS_ENTER_SLEEP_MODE));
+
+	regulator_disable(ctx->power);
+
+	return 0;
+}
+
+static const struct drm_panel_funcs st7789v_drm_funcs = {
+	.disable	= st7789v_disable,
+	.enable		= st7789v_enable,
+	.get_modes	= st7789v_get_modes,
+	.prepare	= st7789v_prepare,
+	.unprepare	= st7789v_unprepare,
+};
+
+static int st7789v_probe(struct spi_device *spi)
+{
+	struct st7789v *ctx;
+	int ret;
+
+	ctx = devm_kzalloc(&spi->dev, sizeof(*ctx), GFP_KERNEL);
+	if (!ctx)
+		return -ENOMEM;
+
+	spi_set_drvdata(spi, ctx);
+	ctx->spi = spi;
+
+	drm_panel_init(&ctx->panel, &spi->dev, &st7789v_drm_funcs,
+		       DRM_MODE_CONNECTOR_DPI);
+
+	ctx->power = devm_regulator_get(&spi->dev, "power");
+	if (IS_ERR(ctx->power))
+		return PTR_ERR(ctx->power);
+
+	ctx->reset = devm_gpiod_get(&spi->dev, "reset", GPIOD_OUT_LOW);
+	if (IS_ERR(ctx->reset)) {
+		dev_err(&spi->dev, "Couldn't get our reset line\n");
+		return PTR_ERR(ctx->reset);
+	}
+
+	ret = drm_panel_of_backlight(&ctx->panel);
+	if (ret)
+		return ret;
+
+	drm_panel_add(&ctx->panel);
+
+	return 0;
+}
+
+static void st7789v_remove(struct spi_device *spi)
+{
+	struct st7789v *ctx = spi_get_drvdata(spi);
+
+	drm_panel_remove(&ctx->panel);
+}
+
+static const struct of_device_id st7789v_of_match[] = {
+	{ .compatible = "sitronix,st7789v" },
+	{ }
+};
+MODULE_DEVICE_TABLE(of, st7789v_of_match);
+
+static struct spi_driver st7789v_driver = {
+	.probe = st7789v_probe,
+	.remove = st7789v_remove,
+	.driver = {
+		.name = "st7789v",
+		.of_match_table = st7789v_of_match,
+	},
+};
+module_spi_driver(st7789v_driver);
+
+MODULE_AUTHOR("Maxime Ripard <maxime.ripard@free-electrons.com>");
+MODULE_DESCRIPTION("Sitronix st7789v LCD Driver");
+MODULE_LICENSE("GPL v2");