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, 270 insertions, 0 deletions

diff --git a/drivers/gpu/drm/bridge/tc358762.c b/drivers/gpu/drm/bridge/tc358762.c
new file mode 100644
index 000000000..0b6a28436
--- /dev/null
+++ b/drivers/gpu/drm/bridge/tc358762.c
@@ -0,0 +1,270 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (C) 2020 Marek Vasut <marex@denx.de>
+ *
+ * Based on tc358764.c by
+ *  Andrzej Hajda <a.hajda@samsung.com>
+ *  Maciej Purski <m.purski@samsung.com>
+ *
+ * Based on rpi_touchscreen.c by
+ *  Eric Anholt <eric@anholt.net>
+ */
+
+#include <linux/delay.h>
+#include <linux/mod_devicetable.h>
+#include <linux/module.h>
+#include <linux/of_graph.h>
+#include <linux/regulator/consumer.h>
+
+#include <video/mipi_display.h>
+
+#include <drm/drm_atomic_helper.h>
+#include <drm/drm_crtc.h>
+#include <drm/drm_mipi_dsi.h>
+#include <drm/drm_of.h>
+#include <drm/drm_panel.h>
+#include <drm/drm_print.h>
+#include <drm/drm_probe_helper.h>
+
+/* PPI layer registers */
+#define PPI_STARTPPI		0x0104 /* START control bit */
+#define PPI_LPTXTIMECNT		0x0114 /* LPTX timing signal */
+#define PPI_D0S_ATMR		0x0144
+#define PPI_D1S_ATMR		0x0148
+#define PPI_D0S_CLRSIPOCOUNT	0x0164 /* Assertion timer for Lane 0 */
+#define PPI_D1S_CLRSIPOCOUNT	0x0168 /* Assertion timer for Lane 1 */
+#define PPI_START_FUNCTION	1
+
+/* DSI layer registers */
+#define DSI_STARTDSI		0x0204 /* START control bit of DSI-TX */
+#define DSI_LANEENABLE		0x0210 /* Enables each lane */
+#define DSI_RX_START		1
+
+/* LCDC/DPI Host Registers */
+#define LCDCTRL			0x0420
+
+/* SPI Master Registers */
+#define SPICMR			0x0450
+#define SPITCR			0x0454
+
+/* System Controller Registers */
+#define SYSCTRL			0x0464
+
+/* System registers */
+#define LPX_PERIOD		3
+
+/* Lane enable PPI and DSI register bits */
+#define LANEENABLE_CLEN		BIT(0)
+#define LANEENABLE_L0EN		BIT(1)
+#define LANEENABLE_L1EN		BIT(2)
+
+struct tc358762 {
+	struct device *dev;
+	struct drm_bridge bridge;
+	struct regulator *regulator;
+	struct drm_bridge *panel_bridge;
+	bool pre_enabled;
+	int error;
+};
+
+static int tc358762_clear_error(struct tc358762 *ctx)
+{
+	int ret = ctx->error;
+
+	ctx->error = 0;
+	return ret;
+}
+
+static void tc358762_write(struct tc358762 *ctx, u16 addr, u32 val)
+{
+	struct mipi_dsi_device *dsi = to_mipi_dsi_device(ctx->dev);
+	ssize_t ret;
+	u8 data[6];
+
+	if (ctx->error)
+		return;
+
+	data[0] = addr;
+	data[1] = addr >> 8;
+	data[2] = val;
+	data[3] = val >> 8;
+	data[4] = val >> 16;
+	data[5] = val >> 24;
+
+	ret = mipi_dsi_generic_write(dsi, data, sizeof(data));
+	if (ret < 0)
+		ctx->error = ret;
+}
+
+static inline struct tc358762 *bridge_to_tc358762(struct drm_bridge *bridge)
+{
+	return container_of(bridge, struct tc358762, bridge);
+}
+
+static int tc358762_init(struct tc358762 *ctx)
+{
+	tc358762_write(ctx, DSI_LANEENABLE,
+		       LANEENABLE_L0EN | LANEENABLE_CLEN);
+	tc358762_write(ctx, PPI_D0S_CLRSIPOCOUNT, 5);
+	tc358762_write(ctx, PPI_D1S_CLRSIPOCOUNT, 5);
+	tc358762_write(ctx, PPI_D0S_ATMR, 0);
+	tc358762_write(ctx, PPI_D1S_ATMR, 0);
+	tc358762_write(ctx, PPI_LPTXTIMECNT, LPX_PERIOD);
+
+	tc358762_write(ctx, SPICMR, 0x00);
+	tc358762_write(ctx, LCDCTRL, 0x00100150);
+	tc358762_write(ctx, SYSCTRL, 0x040f);
+	msleep(100);
+
+	tc358762_write(ctx, PPI_STARTPPI, PPI_START_FUNCTION);
+	tc358762_write(ctx, DSI_STARTDSI, DSI_RX_START);
+
+	msleep(100);
+
+	return tc358762_clear_error(ctx);
+}
+
+static void tc358762_post_disable(struct drm_bridge *bridge)
+{
+	struct tc358762 *ctx = bridge_to_tc358762(bridge);
+	int ret;
+
+	/*
+	 * The post_disable hook might be called multiple times.
+	 * We want to avoid regulator imbalance below.
+	 */
+	if (!ctx->pre_enabled)
+		return;
+
+	ctx->pre_enabled = false;
+
+	ret = regulator_disable(ctx->regulator);
+	if (ret < 0)
+		dev_err(ctx->dev, "error disabling regulators (%d)\n", ret);
+}
+
+static void tc358762_pre_enable(struct drm_bridge *bridge)
+{
+	struct tc358762 *ctx = bridge_to_tc358762(bridge);
+	int ret;
+
+	ret = regulator_enable(ctx->regulator);
+	if (ret < 0)
+		dev_err(ctx->dev, "error enabling regulators (%d)\n", ret);
+
+	ret = tc358762_init(ctx);
+	if (ret < 0)
+		dev_err(ctx->dev, "error initializing bridge (%d)\n", ret);
+
+	ctx->pre_enabled = true;
+}
+
+static int tc358762_attach(struct drm_bridge *bridge,
+			   enum drm_bridge_attach_flags flags)
+{
+	struct tc358762 *ctx = bridge_to_tc358762(bridge);
+
+	return drm_bridge_attach(bridge->encoder, ctx->panel_bridge,
+				 bridge, flags);
+}
+
+static const struct drm_bridge_funcs tc358762_bridge_funcs = {
+	.post_disable = tc358762_post_disable,
+	.pre_enable = tc358762_pre_enable,
+	.attach = tc358762_attach,
+};
+
+static int tc358762_parse_dt(struct tc358762 *ctx)
+{
+	struct drm_bridge *panel_bridge;
+	struct device *dev = ctx->dev;
+
+	panel_bridge = devm_drm_of_get_bridge(dev, dev->of_node, 1, 0);
+	if (IS_ERR(panel_bridge))
+		return PTR_ERR(panel_bridge);
+
+	ctx->panel_bridge = panel_bridge;
+
+	return 0;
+}
+
+static int tc358762_configure_regulators(struct tc358762 *ctx)
+{
+	ctx->regulator = devm_regulator_get(ctx->dev, "vddc");
+	if (IS_ERR(ctx->regulator))
+		return PTR_ERR(ctx->regulator);
+
+	return 0;
+}
+
+static int tc358762_probe(struct mipi_dsi_device *dsi)
+{
+	struct device *dev = &dsi->dev;
+	struct tc358762 *ctx;
+	int ret;
+
+	ctx = devm_kzalloc(dev, sizeof(struct tc358762), GFP_KERNEL);
+	if (!ctx)
+		return -ENOMEM;
+
+	mipi_dsi_set_drvdata(dsi, ctx);
+
+	ctx->dev = dev;
+	ctx->pre_enabled = false;
+
+	/* TODO: Find out how to get dual-lane mode working */
+	dsi->lanes = 1;
+	dsi->format = MIPI_DSI_FMT_RGB888;
+	dsi->mode_flags = MIPI_DSI_MODE_VIDEO | MIPI_DSI_MODE_VIDEO_SYNC_PULSE |
+			  MIPI_DSI_MODE_LPM;
+
+	ret = tc358762_parse_dt(ctx);
+	if (ret < 0)
+		return ret;
+
+	ret = tc358762_configure_regulators(ctx);
+	if (ret < 0)
+		return ret;
+
+	ctx->bridge.funcs = &tc358762_bridge_funcs;
+	ctx->bridge.type = DRM_MODE_CONNECTOR_DPI;
+	ctx->bridge.of_node = dev->of_node;
+
+	drm_bridge_add(&ctx->bridge);
+
+	ret = mipi_dsi_attach(dsi);
+	if (ret < 0) {
+		drm_bridge_remove(&ctx->bridge);
+		dev_err(dev, "failed to attach dsi\n");
+	}
+
+	return ret;
+}
+
+static void tc358762_remove(struct mipi_dsi_device *dsi)
+{
+	struct tc358762 *ctx = mipi_dsi_get_drvdata(dsi);
+
+	mipi_dsi_detach(dsi);
+	drm_bridge_remove(&ctx->bridge);
+}
+
+static const struct of_device_id tc358762_of_match[] = {
+	{ .compatible = "toshiba,tc358762" },
+	{ }
+};
+MODULE_DEVICE_TABLE(of, tc358762_of_match);
+
+static struct mipi_dsi_driver tc358762_driver = {
+	.probe = tc358762_probe,
+	.remove = tc358762_remove,
+	.driver = {
+		.name = "tc358762",
+		.of_match_table = tc358762_of_match,
+	},
+};
+module_mipi_dsi_driver(tc358762_driver);
+
+MODULE_AUTHOR("Marek Vasut <marex@denx.de>");
+MODULE_DESCRIPTION("MIPI-DSI based Driver for TC358762 DSI/DPI Bridge");
+MODULE_LICENSE("GPL v2");