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, 240 insertions, 0 deletions

diff --git a/drivers/input/touchscreen/max11801_ts.c b/drivers/input/touchscreen/max11801_ts.c
new file mode 100644
index 000000000..461023fd6
--- /dev/null
+++ b/drivers/input/touchscreen/max11801_ts.c
@@ -0,0 +1,240 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * Driver for MAXI MAX11801 - A Resistive touch screen controller with
+ * i2c interface
+ *
+ * Copyright (C) 2011 Freescale Semiconductor, Inc.
+ * Author: Zhang Jiejing <jiejing.zhang@freescale.com>
+ *
+ * Based on mcs5000_ts.c
+ */
+
+/*
+ * This driver aims to support the series of MAXI touch chips max11801
+ * through max11803. The main difference between these 4 chips can be
+ * found in the table below:
+ * -----------------------------------------------------
+ * | CHIP     |  AUTO MODE SUPPORT(FIFO) | INTERFACE    |
+ * |----------------------------------------------------|
+ * | max11800 |  YES                     |   SPI        |
+ * | max11801 |  YES                     |   I2C        |
+ * | max11802 |  NO                      |   SPI        |
+ * | max11803 |  NO                      |   I2C        |
+ * ------------------------------------------------------
+ *
+ * Currently, this driver only supports max11801.
+ *
+ * Data Sheet:
+ * http://www.maxim-ic.com/datasheet/index.mvp/id/5943
+ */
+
+#include <linux/module.h>
+#include <linux/i2c.h>
+#include <linux/interrupt.h>
+#include <linux/input.h>
+#include <linux/slab.h>
+#include <linux/bitops.h>
+
+/* Register Address define */
+#define GENERNAL_STATUS_REG		0x00
+#define GENERNAL_CONF_REG		0x01
+#define MESURE_RES_CONF_REG		0x02
+#define MESURE_AVER_CONF_REG		0x03
+#define ADC_SAMPLE_TIME_CONF_REG	0x04
+#define PANEL_SETUPTIME_CONF_REG	0x05
+#define DELAY_CONVERSION_CONF_REG	0x06
+#define TOUCH_DETECT_PULLUP_CONF_REG	0x07
+#define AUTO_MODE_TIME_CONF_REG		0x08 /* only for max11800/max11801 */
+#define APERTURE_CONF_REG		0x09 /* only for max11800/max11801 */
+#define AUX_MESURE_CONF_REG		0x0a
+#define OP_MODE_CONF_REG		0x0b
+
+/* FIFO is found only in max11800 and max11801 */
+#define FIFO_RD_CMD			(0x50 << 1)
+#define MAX11801_FIFO_INT		(1 << 2)
+#define MAX11801_FIFO_OVERFLOW		(1 << 3)
+
+#define XY_BUFSIZE			4
+#define XY_BUF_OFFSET			4
+
+#define MAX11801_MAX_X			0xfff
+#define MAX11801_MAX_Y			0xfff
+
+#define MEASURE_TAG_OFFSET		2
+#define MEASURE_TAG_MASK		(3 << MEASURE_TAG_OFFSET)
+#define EVENT_TAG_OFFSET		0
+#define EVENT_TAG_MASK			(3 << EVENT_TAG_OFFSET)
+#define MEASURE_X_TAG			(0 << MEASURE_TAG_OFFSET)
+#define MEASURE_Y_TAG			(1 << MEASURE_TAG_OFFSET)
+
+/* These are the state of touch event state machine */
+enum {
+	EVENT_INIT,
+	EVENT_MIDDLE,
+	EVENT_RELEASE,
+	EVENT_FIFO_END
+};
+
+struct max11801_data {
+	struct i2c_client		*client;
+	struct input_dev		*input_dev;
+};
+
+static u8 read_register(struct i2c_client *client, int addr)
+{
+	/* XXX: The chip ignores LSB of register address */
+	return i2c_smbus_read_byte_data(client, addr << 1);
+}
+
+static int max11801_write_reg(struct i2c_client *client, int addr, int data)
+{
+	/* XXX: The chip ignores LSB of register address */
+	return i2c_smbus_write_byte_data(client, addr << 1, data);
+}
+
+static irqreturn_t max11801_ts_interrupt(int irq, void *dev_id)
+{
+	struct max11801_data *data = dev_id;
+	struct i2c_client *client = data->client;
+	int status, i, ret;
+	u8 buf[XY_BUFSIZE];
+	int x = -1;
+	int y = -1;
+
+	status = read_register(data->client, GENERNAL_STATUS_REG);
+
+	if (status & (MAX11801_FIFO_INT | MAX11801_FIFO_OVERFLOW)) {
+		status = read_register(data->client, GENERNAL_STATUS_REG);
+
+		ret = i2c_smbus_read_i2c_block_data(client, FIFO_RD_CMD,
+						    XY_BUFSIZE, buf);
+
+		/*
+		 * We should get 4 bytes buffer that contains X,Y
+		 * and event tag
+		 */
+		if (ret < XY_BUFSIZE)
+			goto out;
+
+		for (i = 0; i < XY_BUFSIZE; i += XY_BUFSIZE / 2) {
+			if ((buf[i + 1] & MEASURE_TAG_MASK) == MEASURE_X_TAG)
+				x = (buf[i] << XY_BUF_OFFSET) +
+				    (buf[i + 1] >> XY_BUF_OFFSET);
+			else if ((buf[i + 1] & MEASURE_TAG_MASK) == MEASURE_Y_TAG)
+				y = (buf[i] << XY_BUF_OFFSET) +
+				    (buf[i + 1] >> XY_BUF_OFFSET);
+		}
+
+		if ((buf[1] & EVENT_TAG_MASK) != (buf[3] & EVENT_TAG_MASK))
+			goto out;
+
+		switch (buf[1] & EVENT_TAG_MASK) {
+		case EVENT_INIT:
+		case EVENT_MIDDLE:
+			input_report_abs(data->input_dev, ABS_X, x);
+			input_report_abs(data->input_dev, ABS_Y, y);
+			input_event(data->input_dev, EV_KEY, BTN_TOUCH, 1);
+			input_sync(data->input_dev);
+			break;
+
+		case EVENT_RELEASE:
+			input_event(data->input_dev, EV_KEY, BTN_TOUCH, 0);
+			input_sync(data->input_dev);
+			break;
+
+		case EVENT_FIFO_END:
+			break;
+		}
+	}
+out:
+	return IRQ_HANDLED;
+}
+
+static void max11801_ts_phy_init(struct max11801_data *data)
+{
+	struct i2c_client *client = data->client;
+
+	/* Average X,Y, take 16 samples, average eight media sample */
+	max11801_write_reg(client, MESURE_AVER_CONF_REG, 0xff);
+	/* X,Y panel setup time set to 20us */
+	max11801_write_reg(client, PANEL_SETUPTIME_CONF_REG, 0x11);
+	/* Rough pullup time (2uS), Fine pullup time (10us)  */
+	max11801_write_reg(client, TOUCH_DETECT_PULLUP_CONF_REG, 0x10);
+	/* Auto mode init period = 5ms , scan period = 5ms*/
+	max11801_write_reg(client, AUTO_MODE_TIME_CONF_REG, 0xaa);
+	/* Aperture X,Y set to +- 4LSB */
+	max11801_write_reg(client, APERTURE_CONF_REG, 0x33);
+	/* Enable Power, enable Automode, enable Aperture, enable Average X,Y */
+	max11801_write_reg(client, OP_MODE_CONF_REG, 0x36);
+}
+
+static int max11801_ts_probe(struct i2c_client *client)
+{
+	struct max11801_data *data;
+	struct input_dev *input_dev;
+	int error;
+
+	data = devm_kzalloc(&client->dev, sizeof(*data), GFP_KERNEL);
+	input_dev = devm_input_allocate_device(&client->dev);
+	if (!data || !input_dev) {
+		dev_err(&client->dev, "Failed to allocate memory\n");
+		return -ENOMEM;
+	}
+
+	data->client = client;
+	data->input_dev = input_dev;
+
+	input_dev->name = "max11801_ts";
+	input_dev->id.bustype = BUS_I2C;
+	input_dev->dev.parent = &client->dev;
+
+	__set_bit(EV_ABS, input_dev->evbit);
+	__set_bit(EV_KEY, input_dev->evbit);
+	__set_bit(BTN_TOUCH, input_dev->keybit);
+	input_set_abs_params(input_dev, ABS_X, 0, MAX11801_MAX_X, 0, 0);
+	input_set_abs_params(input_dev, ABS_Y, 0, MAX11801_MAX_Y, 0, 0);
+
+	max11801_ts_phy_init(data);
+
+	error = devm_request_threaded_irq(&client->dev, client->irq, NULL,
+					  max11801_ts_interrupt,
+					  IRQF_TRIGGER_LOW | IRQF_ONESHOT,
+					  "max11801_ts", data);
+	if (error) {
+		dev_err(&client->dev, "Failed to register interrupt\n");
+		return error;
+	}
+
+	error = input_register_device(data->input_dev);
+	if (error)
+		return error;
+
+	return 0;
+}
+
+static const struct i2c_device_id max11801_ts_id[] = {
+	{"max11801", 0},
+	{ }
+};
+MODULE_DEVICE_TABLE(i2c, max11801_ts_id);
+
+static const struct of_device_id max11801_ts_dt_ids[] = {
+	{ .compatible = "maxim,max11801" },
+	{ /* sentinel */ }
+};
+MODULE_DEVICE_TABLE(of, max11801_ts_dt_ids);
+
+static struct i2c_driver max11801_ts_driver = {
+	.driver = {
+		.name	= "max11801_ts",
+		.of_match_table = max11801_ts_dt_ids,
+	},
+	.id_table	= max11801_ts_id,
+	.probe_new	= max11801_ts_probe,
+};
+
+module_i2c_driver(max11801_ts_driver);
+
+MODULE_AUTHOR("Zhang Jiejing <jiejing.zhang@freescale.com>");
+MODULE_DESCRIPTION("Touchscreen driver for MAXI MAX11801 controller");
+MODULE_LICENSE("GPL");