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, 506 insertions, 0 deletions

diff --git a/drivers/gpu/drm/panel/panel-tpo-td043mtea1.c b/drivers/gpu/drm/panel/panel-tpo-td043mtea1.c
new file mode 100644
index 000000000..cf4609bb9
--- /dev/null
+++ b/drivers/gpu/drm/panel/panel-tpo-td043mtea1.c
@@ -0,0 +1,506 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Toppoly TD043MTEA1 Panel Driver
+ *
+ * Copyright (C) 2019 Texas Instruments Incorporated
+ *
+ * Based on the omapdrm-specific panel-tpo-td043mtea1 driver
+ *
+ * Author: Gražvydas Ignotas <notasas@gmail.com>
+ */
+
+#include <linux/delay.h>
+#include <linux/module.h>
+#include <linux/regulator/consumer.h>
+#include <linux/spi/spi.h>
+
+#include <drm/drm_connector.h>
+#include <drm/drm_modes.h>
+#include <drm/drm_panel.h>
+
+#define TPO_R02_MODE(x)			((x) & 7)
+#define TPO_R02_MODE_800x480		7
+#define TPO_R02_NCLK_RISING		BIT(3)
+#define TPO_R02_HSYNC_HIGH		BIT(4)
+#define TPO_R02_VSYNC_HIGH		BIT(5)
+
+#define TPO_R03_NSTANDBY		BIT(0)
+#define TPO_R03_EN_CP_CLK		BIT(1)
+#define TPO_R03_EN_VGL_PUMP		BIT(2)
+#define TPO_R03_EN_PWM			BIT(3)
+#define TPO_R03_DRIVING_CAP_100		BIT(4)
+#define TPO_R03_EN_PRE_CHARGE		BIT(6)
+#define TPO_R03_SOFTWARE_CTL		BIT(7)
+
+#define TPO_R04_NFLIP_H			BIT(0)
+#define TPO_R04_NFLIP_V			BIT(1)
+#define TPO_R04_CP_CLK_FREQ_1H		BIT(2)
+#define TPO_R04_VGL_FREQ_1H		BIT(4)
+
+#define TPO_R03_VAL_NORMAL \
+	(TPO_R03_NSTANDBY | TPO_R03_EN_CP_CLK | TPO_R03_EN_VGL_PUMP | \
+	 TPO_R03_EN_PWM | TPO_R03_DRIVING_CAP_100 | TPO_R03_EN_PRE_CHARGE | \
+	 TPO_R03_SOFTWARE_CTL)
+
+#define TPO_R03_VAL_STANDBY \
+	(TPO_R03_DRIVING_CAP_100 | TPO_R03_EN_PRE_CHARGE | \
+	 TPO_R03_SOFTWARE_CTL)
+
+static const u16 td043mtea1_def_gamma[12] = {
+	105, 315, 381, 431, 490, 537, 579, 686, 780, 837, 880, 1023
+};
+
+struct td043mtea1_panel {
+	struct drm_panel panel;
+
+	struct spi_device *spi;
+	struct regulator *vcc_reg;
+	struct gpio_desc *reset_gpio;
+
+	unsigned int mode;
+	u16 gamma[12];
+	bool vmirror;
+	bool powered_on;
+	bool spi_suspended;
+	bool power_on_resume;
+};
+
+#define to_td043mtea1_device(p) container_of(p, struct td043mtea1_panel, panel)
+
+/* -----------------------------------------------------------------------------
+ * Hardware Access
+ */
+
+static int td043mtea1_write(struct td043mtea1_panel *lcd, u8 addr, u8 value)
+{
+	struct spi_message msg;
+	struct spi_transfer xfer;
+	u16 data;
+	int ret;
+
+	spi_message_init(&msg);
+
+	memset(&xfer, 0, sizeof(xfer));
+
+	data = ((u16)addr << 10) | (1 << 8) | value;
+	xfer.tx_buf = &data;
+	xfer.bits_per_word = 16;
+	xfer.len = 2;
+	spi_message_add_tail(&xfer, &msg);
+
+	ret = spi_sync(lcd->spi, &msg);
+	if (ret < 0)
+		dev_warn(&lcd->spi->dev, "failed to write to LCD reg (%d)\n",
+			 ret);
+
+	return ret;
+}
+
+static void td043mtea1_write_gamma(struct td043mtea1_panel *lcd)
+{
+	const u16 *gamma = lcd->gamma;
+	unsigned int i;
+	u8 val;
+
+	/* gamma bits [9:8] */
+	for (val = i = 0; i < 4; i++)
+		val |= (gamma[i] & 0x300) >> ((i + 1) * 2);
+	td043mtea1_write(lcd, 0x11, val);
+
+	for (val = i = 0; i < 4; i++)
+		val |= (gamma[i + 4] & 0x300) >> ((i + 1) * 2);
+	td043mtea1_write(lcd, 0x12, val);
+
+	for (val = i = 0; i < 4; i++)
+		val |= (gamma[i + 8] & 0x300) >> ((i + 1) * 2);
+	td043mtea1_write(lcd, 0x13, val);
+
+	/* gamma bits [7:0] */
+	for (i = 0; i < 12; i++)
+		td043mtea1_write(lcd, 0x14 + i, gamma[i] & 0xff);
+}
+
+static int td043mtea1_write_mirror(struct td043mtea1_panel *lcd)
+{
+	u8 reg4 = TPO_R04_NFLIP_H | TPO_R04_NFLIP_V |
+		TPO_R04_CP_CLK_FREQ_1H | TPO_R04_VGL_FREQ_1H;
+	if (lcd->vmirror)
+		reg4 &= ~TPO_R04_NFLIP_V;
+
+	return td043mtea1_write(lcd, 4, reg4);
+}
+
+static int td043mtea1_power_on(struct td043mtea1_panel *lcd)
+{
+	int ret;
+
+	if (lcd->powered_on)
+		return 0;
+
+	ret = regulator_enable(lcd->vcc_reg);
+	if (ret < 0)
+		return ret;
+
+	/* Wait for the panel to stabilize. */
+	msleep(160);
+
+	gpiod_set_value(lcd->reset_gpio, 0);
+
+	td043mtea1_write(lcd, 2, TPO_R02_MODE(lcd->mode) | TPO_R02_NCLK_RISING);
+	td043mtea1_write(lcd, 3, TPO_R03_VAL_NORMAL);
+	td043mtea1_write(lcd, 0x20, 0xf0);
+	td043mtea1_write(lcd, 0x21, 0xf0);
+	td043mtea1_write_mirror(lcd);
+	td043mtea1_write_gamma(lcd);
+
+	lcd->powered_on = true;
+
+	return 0;
+}
+
+static void td043mtea1_power_off(struct td043mtea1_panel *lcd)
+{
+	if (!lcd->powered_on)
+		return;
+
+	td043mtea1_write(lcd, 3, TPO_R03_VAL_STANDBY | TPO_R03_EN_PWM);
+
+	gpiod_set_value(lcd->reset_gpio, 1);
+
+	/* wait for at least 2 vsyncs before cutting off power */
+	msleep(50);
+
+	td043mtea1_write(lcd, 3, TPO_R03_VAL_STANDBY);
+
+	regulator_disable(lcd->vcc_reg);
+
+	lcd->powered_on = false;
+}
+
+/* -----------------------------------------------------------------------------
+ * sysfs
+ */
+
+static ssize_t vmirror_show(struct device *dev, struct device_attribute *attr,
+			    char *buf)
+{
+	struct td043mtea1_panel *lcd = dev_get_drvdata(dev);
+
+	return sysfs_emit(buf, "%d\n", lcd->vmirror);
+}
+
+static ssize_t vmirror_store(struct device *dev, struct device_attribute *attr,
+			     const char *buf, size_t count)
+{
+	struct td043mtea1_panel *lcd = dev_get_drvdata(dev);
+	int val;
+	int ret;
+
+	ret = kstrtoint(buf, 0, &val);
+	if (ret < 0)
+		return ret;
+
+	lcd->vmirror = !!val;
+
+	ret = td043mtea1_write_mirror(lcd);
+	if (ret < 0)
+		return ret;
+
+	return count;
+}
+
+static ssize_t mode_show(struct device *dev, struct device_attribute *attr,
+			 char *buf)
+{
+	struct td043mtea1_panel *lcd = dev_get_drvdata(dev);
+
+	return sysfs_emit(buf, "%d\n", lcd->mode);
+}
+
+static ssize_t mode_store(struct device *dev, struct device_attribute *attr,
+			  const char *buf, size_t count)
+{
+	struct td043mtea1_panel *lcd = dev_get_drvdata(dev);
+	long val;
+	int ret;
+
+	ret = kstrtol(buf, 0, &val);
+	if (ret != 0 || val & ~7)
+		return -EINVAL;
+
+	lcd->mode = val;
+
+	val |= TPO_R02_NCLK_RISING;
+	td043mtea1_write(lcd, 2, val);
+
+	return count;
+}
+
+static ssize_t gamma_show(struct device *dev, struct device_attribute *attr,
+			  char *buf)
+{
+	struct td043mtea1_panel *lcd = dev_get_drvdata(dev);
+	ssize_t len = 0;
+	unsigned int i;
+	int ret;
+
+	for (i = 0; i < ARRAY_SIZE(lcd->gamma); i++) {
+		ret = snprintf(buf + len, PAGE_SIZE - len, "%u ",
+			       lcd->gamma[i]);
+		if (ret < 0)
+			return ret;
+		len += ret;
+	}
+	buf[len - 1] = '\n';
+
+	return len;
+}
+
+static ssize_t gamma_store(struct device *dev, struct device_attribute *attr,
+			   const char *buf, size_t count)
+{
+	struct td043mtea1_panel *lcd = dev_get_drvdata(dev);
+	unsigned int g[12];
+	unsigned int i;
+	int ret;
+
+	ret = sscanf(buf, "%u %u %u %u %u %u %u %u %u %u %u %u",
+		     &g[0], &g[1], &g[2], &g[3], &g[4], &g[5],
+		     &g[6], &g[7], &g[8], &g[9], &g[10], &g[11]);
+	if (ret != 12)
+		return -EINVAL;
+
+	for (i = 0; i < 12; i++)
+		lcd->gamma[i] = g[i];
+
+	td043mtea1_write_gamma(lcd);
+
+	return count;
+}
+
+static DEVICE_ATTR_RW(vmirror);
+static DEVICE_ATTR_RW(mode);
+static DEVICE_ATTR_RW(gamma);
+
+static struct attribute *td043mtea1_attrs[] = {
+	&dev_attr_vmirror.attr,
+	&dev_attr_mode.attr,
+	&dev_attr_gamma.attr,
+	NULL,
+};
+
+static const struct attribute_group td043mtea1_attr_group = {
+	.attrs = td043mtea1_attrs,
+};
+
+/* -----------------------------------------------------------------------------
+ * Panel Operations
+ */
+
+static int td043mtea1_unprepare(struct drm_panel *panel)
+{
+	struct td043mtea1_panel *lcd = to_td043mtea1_device(panel);
+
+	if (!lcd->spi_suspended)
+		td043mtea1_power_off(lcd);
+
+	return 0;
+}
+
+static int td043mtea1_prepare(struct drm_panel *panel)
+{
+	struct td043mtea1_panel *lcd = to_td043mtea1_device(panel);
+	int ret;
+
+	/*
+	 * If we are resuming from system suspend, SPI might not be enabled
+	 * yet, so we'll program the LCD from SPI PM resume callback.
+	 */
+	if (lcd->spi_suspended)
+		return 0;
+
+	ret = td043mtea1_power_on(lcd);
+	if (ret) {
+		dev_err(&lcd->spi->dev, "%s: power on failed (%d)\n",
+			__func__, ret);
+		return ret;
+	}
+
+	return 0;
+}
+
+static const struct drm_display_mode td043mtea1_mode = {
+	.clock = 36000,
+	.hdisplay = 800,
+	.hsync_start = 800 + 68,
+	.hsync_end = 800 + 68 + 1,
+	.htotal = 800 + 68 + 1 + 214,
+	.vdisplay = 480,
+	.vsync_start = 480 + 39,
+	.vsync_end = 480 + 39 + 1,
+	.vtotal = 480 + 39 + 1 + 34,
+	.type = DRM_MODE_TYPE_DRIVER | DRM_MODE_TYPE_PREFERRED,
+	.flags = DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC,
+	.width_mm = 94,
+	.height_mm = 56,
+};
+
+static int td043mtea1_get_modes(struct drm_panel *panel,
+				struct drm_connector *connector)
+{
+	struct drm_display_mode *mode;
+
+	mode = drm_mode_duplicate(connector->dev, &td043mtea1_mode);
+	if (!mode)
+		return -ENOMEM;
+
+	drm_mode_set_name(mode);
+	drm_mode_probed_add(connector, mode);
+
+	connector->display_info.width_mm = td043mtea1_mode.width_mm;
+	connector->display_info.height_mm = td043mtea1_mode.height_mm;
+	/*
+	 * FIXME: According to the datasheet sync signals are sampled on the
+	 * rising edge of the clock, but the code running on the OMAP3 Pandora
+	 * indicates sampling on the falling edge. This should be tested on a
+	 * real device.
+	 */
+	connector->display_info.bus_flags = DRM_BUS_FLAG_DE_HIGH
+					  | DRM_BUS_FLAG_SYNC_SAMPLE_NEGEDGE
+					  | DRM_BUS_FLAG_PIXDATA_SAMPLE_POSEDGE;
+
+	return 1;
+}
+
+static const struct drm_panel_funcs td043mtea1_funcs = {
+	.unprepare = td043mtea1_unprepare,
+	.prepare = td043mtea1_prepare,
+	.get_modes = td043mtea1_get_modes,
+};
+
+/* -----------------------------------------------------------------------------
+ * Power Management, Probe and Remove
+ */
+
+static int __maybe_unused td043mtea1_suspend(struct device *dev)
+{
+	struct td043mtea1_panel *lcd = dev_get_drvdata(dev);
+
+	if (lcd->powered_on) {
+		td043mtea1_power_off(lcd);
+		lcd->powered_on = true;
+	}
+
+	lcd->spi_suspended = true;
+
+	return 0;
+}
+
+static int __maybe_unused td043mtea1_resume(struct device *dev)
+{
+	struct td043mtea1_panel *lcd = dev_get_drvdata(dev);
+	int ret;
+
+	lcd->spi_suspended = false;
+
+	if (lcd->powered_on) {
+		lcd->powered_on = false;
+		ret = td043mtea1_power_on(lcd);
+		if (ret)
+			return ret;
+	}
+
+	return 0;
+}
+
+static SIMPLE_DEV_PM_OPS(td043mtea1_pm_ops, td043mtea1_suspend,
+			 td043mtea1_resume);
+
+static int td043mtea1_probe(struct spi_device *spi)
+{
+	struct td043mtea1_panel *lcd;
+	int ret;
+
+	lcd = devm_kzalloc(&spi->dev, sizeof(*lcd), GFP_KERNEL);
+	if (lcd == NULL)
+		return -ENOMEM;
+
+	spi_set_drvdata(spi, lcd);
+	lcd->spi = spi;
+	lcd->mode = TPO_R02_MODE_800x480;
+	memcpy(lcd->gamma, td043mtea1_def_gamma, sizeof(lcd->gamma));
+
+	lcd->vcc_reg = devm_regulator_get(&spi->dev, "vcc");
+	if (IS_ERR(lcd->vcc_reg))
+		return dev_err_probe(&spi->dev, PTR_ERR(lcd->vcc_reg),
+				     "failed to get VCC regulator\n");
+
+	lcd->reset_gpio = devm_gpiod_get(&spi->dev, "reset", GPIOD_OUT_HIGH);
+	if (IS_ERR(lcd->reset_gpio))
+		return dev_err_probe(&spi->dev, PTR_ERR(lcd->reset_gpio),
+				     "failed to get reset GPIO\n");
+
+	spi->bits_per_word = 16;
+	spi->mode = SPI_MODE_0;
+
+	ret = spi_setup(spi);
+	if (ret < 0) {
+		dev_err(&spi->dev, "failed to setup SPI: %d\n", ret);
+		return ret;
+	}
+
+	ret = sysfs_create_group(&spi->dev.kobj, &td043mtea1_attr_group);
+	if (ret < 0) {
+		dev_err(&spi->dev, "failed to create sysfs files\n");
+		return ret;
+	}
+
+	drm_panel_init(&lcd->panel, &lcd->spi->dev, &td043mtea1_funcs,
+		       DRM_MODE_CONNECTOR_DPI);
+
+	drm_panel_add(&lcd->panel);
+
+	return 0;
+}
+
+static void td043mtea1_remove(struct spi_device *spi)
+{
+	struct td043mtea1_panel *lcd = spi_get_drvdata(spi);
+
+	drm_panel_remove(&lcd->panel);
+	drm_panel_disable(&lcd->panel);
+	drm_panel_unprepare(&lcd->panel);
+
+	sysfs_remove_group(&spi->dev.kobj, &td043mtea1_attr_group);
+}
+
+static const struct of_device_id td043mtea1_of_match[] = {
+	{ .compatible = "tpo,td043mtea1", },
+	{ /* sentinel */ },
+};
+
+MODULE_DEVICE_TABLE(of, td043mtea1_of_match);
+
+static const struct spi_device_id td043mtea1_ids[] = {
+	{ "td043mtea1", 0 },
+	{ /* sentinel */ }
+};
+
+MODULE_DEVICE_TABLE(spi, td043mtea1_ids);
+
+static struct spi_driver td043mtea1_driver = {
+	.probe		= td043mtea1_probe,
+	.remove		= td043mtea1_remove,
+	.id_table	= td043mtea1_ids,
+	.driver		= {
+		.name	= "panel-tpo-td043mtea1",
+		.pm	= &td043mtea1_pm_ops,
+		.of_match_table = td043mtea1_of_match,
+	},
+};
+
+module_spi_driver(td043mtea1_driver);
+
+MODULE_AUTHOR("Gražvydas Ignotas <notasas@gmail.com>");
+MODULE_DESCRIPTION("TPO TD043MTEA1 Panel Driver");
+MODULE_LICENSE("GPL");