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, 360 insertions, 0 deletions

diff --git a/drivers/gpu/drm/panel/panel-novatek-nt39016.c b/drivers/gpu/drm/panel/panel-novatek-nt39016.c
new file mode 100644
index 000000000..f58cfb10b
--- /dev/null
+++ b/drivers/gpu/drm/panel/panel-novatek-nt39016.c
@@ -0,0 +1,360 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Novatek NT39016 TFT LCD panel driver
+ *
+ * Copyright (C) 2017, Maarten ter Huurne <maarten@treewalker.org>
+ * Copyright (C) 2019, Paul Cercueil <paul@crapouillou.net>
+ */
+
+#include <linux/delay.h>
+#include <linux/device.h>
+#include <linux/gpio/consumer.h>
+#include <linux/media-bus-format.h>
+#include <linux/module.h>
+#include <linux/of.h>
+#include <linux/of_device.h>
+#include <linux/regmap.h>
+#include <linux/regulator/consumer.h>
+#include <linux/spi/spi.h>
+
+#include <drm/drm_modes.h>
+#include <drm/drm_panel.h>
+
+enum nt39016_regs {
+	NT39016_REG_SYSTEM,
+	NT39016_REG_TIMING,
+	NT39016_REG_OP,
+	NT39016_REG_DATA_IN,
+	NT39016_REG_SRC_TIMING_DELAY,
+	NT39016_REG_GATE_TIMING_DELAY,
+	NT39016_REG_RESERVED,
+	NT39016_REG_INITIAL_FUNC,
+	NT39016_REG_CONTRAST,
+	NT39016_REG_BRIGHTNESS,
+	NT39016_REG_HUE_SATURATION,
+	NT39016_REG_RB_SUBCONTRAST,
+	NT39016_REG_R_SUBBRIGHTNESS,
+	NT39016_REG_B_SUBBRIGHTNESS,
+	NT39016_REG_VCOMDC,
+	NT39016_REG_VCOMAC,
+	NT39016_REG_VGAM2,
+	NT39016_REG_VGAM34,
+	NT39016_REG_VGAM56,
+	NT39016_REG_VCOMDC_TRIM = 0x1e,
+	NT39016_REG_DISPLAY_MODE = 0x20,
+};
+
+#define NT39016_SYSTEM_RESET_N	BIT(0)
+#define NT39016_SYSTEM_STANDBY	BIT(1)
+
+struct nt39016_panel_info {
+	const struct drm_display_mode *display_modes;
+	unsigned int num_modes;
+	u16 width_mm, height_mm;
+	u32 bus_format, bus_flags;
+};
+
+struct nt39016 {
+	struct drm_panel drm_panel;
+	struct regmap *map;
+	struct regulator *supply;
+	const struct nt39016_panel_info *panel_info;
+
+	struct gpio_desc *reset_gpio;
+};
+
+static inline struct nt39016 *to_nt39016(struct drm_panel *panel)
+{
+	return container_of(panel, struct nt39016, drm_panel);
+}
+
+#define RV(REG, VAL) { .reg = (REG), .def = (VAL), .delay_us = 2 }
+static const struct reg_sequence nt39016_panel_regs[] = {
+	RV(NT39016_REG_SYSTEM, 0x00),
+	RV(NT39016_REG_TIMING, 0x00),
+	RV(NT39016_REG_OP, 0x03),
+	RV(NT39016_REG_DATA_IN, 0xCC),
+	RV(NT39016_REG_SRC_TIMING_DELAY, 0x46),
+	RV(NT39016_REG_GATE_TIMING_DELAY, 0x05),
+	RV(NT39016_REG_RESERVED, 0x00),
+	RV(NT39016_REG_INITIAL_FUNC, 0x00),
+	RV(NT39016_REG_CONTRAST, 0x08),
+	RV(NT39016_REG_BRIGHTNESS, 0x40),
+	RV(NT39016_REG_HUE_SATURATION, 0x88),
+	RV(NT39016_REG_RB_SUBCONTRAST, 0x88),
+	RV(NT39016_REG_R_SUBBRIGHTNESS, 0x20),
+	RV(NT39016_REG_B_SUBBRIGHTNESS, 0x20),
+	RV(NT39016_REG_VCOMDC, 0x67),
+	RV(NT39016_REG_VCOMAC, 0xA4),
+	RV(NT39016_REG_VGAM2, 0x04),
+	RV(NT39016_REG_VGAM34, 0x24),
+	RV(NT39016_REG_VGAM56, 0x24),
+	RV(NT39016_REG_DISPLAY_MODE, 0x00),
+};
+
+#undef RV
+
+static const struct regmap_range nt39016_regmap_no_ranges[] = {
+	regmap_reg_range(0x13, 0x1D),
+	regmap_reg_range(0x1F, 0x1F),
+};
+
+static const struct regmap_access_table nt39016_regmap_access_table = {
+	.no_ranges = nt39016_regmap_no_ranges,
+	.n_no_ranges = ARRAY_SIZE(nt39016_regmap_no_ranges),
+};
+
+static const struct regmap_config nt39016_regmap_config = {
+	.reg_bits = 6,
+	.pad_bits = 2,
+	.val_bits = 8,
+
+	.max_register = NT39016_REG_DISPLAY_MODE,
+	.wr_table = &nt39016_regmap_access_table,
+	.write_flag_mask = 0x02,
+
+	.cache_type = REGCACHE_FLAT,
+};
+
+static int nt39016_prepare(struct drm_panel *drm_panel)
+{
+	struct nt39016 *panel = to_nt39016(drm_panel);
+	int err;
+
+	err = regulator_enable(panel->supply);
+	if (err) {
+		dev_err(drm_panel->dev, "Failed to enable power supply: %d\n", err);
+		return err;
+	}
+
+	/*
+	 * Reset the NT39016.
+	 * The documentation says the reset pulse should be at least 40 us to
+	 * pass the glitch filter, but when testing I see some resets fail and
+	 * some succeed when using a 70 us delay, so we use 100 us instead.
+	 */
+	gpiod_set_value_cansleep(panel->reset_gpio, 1);
+	usleep_range(100, 1000);
+	gpiod_set_value_cansleep(panel->reset_gpio, 0);
+	udelay(2);
+
+	/* Init all registers. */
+	err = regmap_multi_reg_write(panel->map, nt39016_panel_regs,
+				     ARRAY_SIZE(nt39016_panel_regs));
+	if (err) {
+		dev_err(drm_panel->dev, "Failed to init registers: %d\n", err);
+		goto err_disable_regulator;
+	}
+
+	return 0;
+
+err_disable_regulator:
+	regulator_disable(panel->supply);
+	return err;
+}
+
+static int nt39016_unprepare(struct drm_panel *drm_panel)
+{
+	struct nt39016 *panel = to_nt39016(drm_panel);
+
+	gpiod_set_value_cansleep(panel->reset_gpio, 1);
+
+	regulator_disable(panel->supply);
+
+	return 0;
+}
+
+static int nt39016_enable(struct drm_panel *drm_panel)
+{
+	struct nt39016 *panel = to_nt39016(drm_panel);
+	int ret;
+
+	ret = regmap_write(panel->map, NT39016_REG_SYSTEM,
+			   NT39016_SYSTEM_RESET_N | NT39016_SYSTEM_STANDBY);
+	if (ret) {
+		dev_err(drm_panel->dev, "Unable to enable panel: %d\n", ret);
+		return ret;
+	}
+
+	if (drm_panel->backlight) {
+		/* Wait for the picture to be ready before enabling backlight */
+		msleep(150);
+	}
+
+	return 0;
+}
+
+static int nt39016_disable(struct drm_panel *drm_panel)
+{
+	struct nt39016 *panel = to_nt39016(drm_panel);
+	int err;
+
+	err = regmap_write(panel->map, NT39016_REG_SYSTEM,
+			   NT39016_SYSTEM_RESET_N);
+	if (err) {
+		dev_err(drm_panel->dev, "Unable to disable panel: %d\n", err);
+		return err;
+	}
+
+	return 0;
+}
+
+static int nt39016_get_modes(struct drm_panel *drm_panel,
+			     struct drm_connector *connector)
+{
+	struct nt39016 *panel = to_nt39016(drm_panel);
+	const struct nt39016_panel_info *panel_info = panel->panel_info;
+	struct drm_display_mode *mode;
+	unsigned int i;
+
+	for (i = 0; i < panel_info->num_modes; i++) {
+		mode = drm_mode_duplicate(connector->dev,
+					  &panel_info->display_modes[i]);
+		if (!mode)
+			return -ENOMEM;
+
+		drm_mode_set_name(mode);
+
+		mode->type = DRM_MODE_TYPE_DRIVER;
+		if (panel_info->num_modes == 1)
+			mode->type |= DRM_MODE_TYPE_PREFERRED;
+
+		drm_mode_probed_add(connector, mode);
+	}
+
+	connector->display_info.bpc = 8;
+	connector->display_info.width_mm = panel_info->width_mm;
+	connector->display_info.height_mm = panel_info->height_mm;
+
+	drm_display_info_set_bus_formats(&connector->display_info,
+					 &panel_info->bus_format, 1);
+	connector->display_info.bus_flags = panel_info->bus_flags;
+
+	return panel_info->num_modes;
+}
+
+static const struct drm_panel_funcs nt39016_funcs = {
+	.prepare	= nt39016_prepare,
+	.unprepare	= nt39016_unprepare,
+	.enable		= nt39016_enable,
+	.disable	= nt39016_disable,
+	.get_modes	= nt39016_get_modes,
+};
+
+static int nt39016_probe(struct spi_device *spi)
+{
+	struct device *dev = &spi->dev;
+	struct nt39016 *panel;
+	int err;
+
+	panel = devm_kzalloc(dev, sizeof(*panel), GFP_KERNEL);
+	if (!panel)
+		return -ENOMEM;
+
+	spi_set_drvdata(spi, panel);
+
+	panel->panel_info = of_device_get_match_data(dev);
+	if (!panel->panel_info)
+		return -EINVAL;
+
+	panel->supply = devm_regulator_get(dev, "power");
+	if (IS_ERR(panel->supply))
+		return dev_err_probe(dev, PTR_ERR(panel->supply),
+				     "Failed to get power supply\n");
+
+	panel->reset_gpio = devm_gpiod_get(dev, "reset", GPIOD_OUT_HIGH);
+	if (IS_ERR(panel->reset_gpio))
+		return dev_err_probe(dev, PTR_ERR(panel->reset_gpio), "Failed to get reset GPIO\n");
+
+	spi->bits_per_word = 8;
+	spi->mode = SPI_MODE_3 | SPI_3WIRE;
+	err = spi_setup(spi);
+	if (err) {
+		dev_err(dev, "Failed to setup SPI\n");
+		return err;
+	}
+
+	panel->map = devm_regmap_init_spi(spi, &nt39016_regmap_config);
+	if (IS_ERR(panel->map)) {
+		dev_err(dev, "Failed to init regmap\n");
+		return PTR_ERR(panel->map);
+	}
+
+	drm_panel_init(&panel->drm_panel, dev, &nt39016_funcs,
+		       DRM_MODE_CONNECTOR_DPI);
+
+	err = drm_panel_of_backlight(&panel->drm_panel);
+	if (err)
+		return dev_err_probe(dev, err, "Failed to get backlight handle\n");
+
+	drm_panel_add(&panel->drm_panel);
+
+	return 0;
+}
+
+static void nt39016_remove(struct spi_device *spi)
+{
+	struct nt39016 *panel = spi_get_drvdata(spi);
+
+	drm_panel_remove(&panel->drm_panel);
+
+	nt39016_disable(&panel->drm_panel);
+	nt39016_unprepare(&panel->drm_panel);
+}
+
+static const struct drm_display_mode kd035g6_display_modes[] = {
+	{	/* 60 Hz */
+		.clock = 6000,
+		.hdisplay = 320,
+		.hsync_start = 320 + 10,
+		.hsync_end = 320 + 10 + 50,
+		.htotal = 320 + 10 + 50 + 20,
+		.vdisplay = 240,
+		.vsync_start = 240 + 5,
+		.vsync_end = 240 + 5 + 1,
+		.vtotal = 240 + 5 + 1 + 4,
+		.flags = DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC,
+	},
+	{	/* 50 Hz */
+		.clock = 5400,
+		.hdisplay = 320,
+		.hsync_start = 320 + 42,
+		.hsync_end = 320 + 42 + 50,
+		.htotal = 320 + 42 + 50 + 20,
+		.vdisplay = 240,
+		.vsync_start = 240 + 5,
+		.vsync_end = 240 + 5 + 1,
+		.vtotal = 240 + 5 + 1 + 4,
+		.flags = DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC,
+	},
+};
+
+static const struct nt39016_panel_info kd035g6_info = {
+	.display_modes = kd035g6_display_modes,
+	.num_modes = ARRAY_SIZE(kd035g6_display_modes),
+	.width_mm = 71,
+	.height_mm = 53,
+	.bus_format = MEDIA_BUS_FMT_RGB888_1X24,
+	.bus_flags = DRM_BUS_FLAG_PIXDATA_SAMPLE_POSEDGE,
+};
+
+static const struct of_device_id nt39016_of_match[] = {
+	{ .compatible = "kingdisplay,kd035g6-54nt", .data = &kd035g6_info },
+	{ /* sentinel */ }
+};
+MODULE_DEVICE_TABLE(of, nt39016_of_match);
+
+static struct spi_driver nt39016_driver = {
+	.driver = {
+		.name = "nt39016",
+		.of_match_table = nt39016_of_match,
+	},
+	.probe = nt39016_probe,
+	.remove = nt39016_remove,
+};
+
+module_spi_driver(nt39016_driver);
+
+MODULE_AUTHOR("Maarten ter Huurne <maarten@treewalker.org>");
+MODULE_AUTHOR("Paul Cercueil <paul@crapouillou.net>");
+MODULE_LICENSE("GPL v2");