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, 250 insertions, 0 deletions

diff --git a/drivers/regulator/rt4801-regulator.c b/drivers/regulator/rt4801-regulator.c
new file mode 100644
index 000000000..563d79196
--- /dev/null
+++ b/drivers/regulator/rt4801-regulator.c
@@ -0,0 +1,250 @@
+// SPDX-License-Identifier: GPL-2.0+
+
+#include <linux/gpio/consumer.h>
+#include <linux/i2c.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/of.h>
+#include <linux/regmap.h>
+#include <linux/regulator/driver.h>
+
+#define RT4801_REG_VOP	0x00
+#define RT4801_REG_VON	0x01
+#define RT4801_REG_APPS	0x03
+
+#define VOUT_MASK	0x1F
+
+#define MIN_UV		4000000
+#define STEP_UV		100000
+#define MAX_UV		6000000
+#define N_VOLTAGES	((MAX_UV - MIN_UV) / STEP_UV + 1)
+
+#define DSV_OUT_POS	0
+#define DSV_OUT_NEG	1
+#define DSV_OUT_MAX	2
+
+#define DSVP_ENABLE	BIT(0)
+#define DSVN_ENABLE	BIT(1)
+#define DSVALL_ENABLE	(DSVP_ENABLE | DSVN_ENABLE)
+
+struct rt4801_priv {
+	struct device *dev;
+	struct gpio_desc *enable_gpios[DSV_OUT_MAX];
+	unsigned int enable_flag;
+	unsigned int volt_sel[DSV_OUT_MAX];
+};
+
+static int rt4801_of_parse_cb(struct device_node *np,
+			      const struct regulator_desc *desc,
+			      struct regulator_config *config)
+{
+	struct rt4801_priv *priv = config->driver_data;
+	int id = desc->id;
+
+	if (priv->enable_gpios[id]) {
+		dev_warn(priv->dev, "duplicated enable-gpios property\n");
+		return 0;
+	}
+	priv->enable_gpios[id] = devm_fwnode_gpiod_get_index(priv->dev,
+							     of_fwnode_handle(np),
+							     "enable", 0,
+							     GPIOD_OUT_HIGH,
+							     "rt4801");
+	if (IS_ERR(priv->enable_gpios[id]))
+		priv->enable_gpios[id] = NULL;
+
+	return 0;
+}
+
+static int rt4801_set_voltage_sel(struct regulator_dev *rdev, unsigned int selector)
+{
+	struct rt4801_priv *priv = rdev_get_drvdata(rdev);
+	int id = rdev_get_id(rdev), ret;
+
+	if (priv->enable_flag & BIT(id)) {
+		ret = regulator_set_voltage_sel_regmap(rdev, selector);
+		if (ret)
+			return ret;
+	}
+
+	priv->volt_sel[id] = selector;
+	return 0;
+}
+
+static int rt4801_get_voltage_sel(struct regulator_dev *rdev)
+{
+	struct rt4801_priv *priv = rdev_get_drvdata(rdev);
+	int id = rdev_get_id(rdev);
+
+	if (priv->enable_flag & BIT(id))
+		return regulator_get_voltage_sel_regmap(rdev);
+
+	return priv->volt_sel[id];
+}
+
+static int rt4801_enable(struct regulator_dev *rdev)
+{
+	struct rt4801_priv *priv = rdev_get_drvdata(rdev);
+	int id = rdev_get_id(rdev), ret;
+
+	if (!priv->enable_gpios[id]) {
+		dev_warn(&rdev->dev, "no dedicated gpio can control\n");
+		goto bypass_gpio;
+	}
+
+	gpiod_set_value(priv->enable_gpios[id], 1);
+
+bypass_gpio:
+	ret = regmap_write(rdev->regmap, rdev->desc->vsel_reg, priv->volt_sel[id]);
+	if (ret)
+		return ret;
+
+	priv->enable_flag |= BIT(id);
+	return 0;
+}
+
+static int rt4801_disable(struct regulator_dev *rdev)
+{
+	struct rt4801_priv *priv = rdev_get_drvdata(rdev);
+	int id = rdev_get_id(rdev);
+
+	if (!priv->enable_gpios[id]) {
+		dev_warn(&rdev->dev, "no dedicated gpio can control\n");
+		goto bypass_gpio;
+	}
+
+	gpiod_set_value(priv->enable_gpios[id], 0);
+
+bypass_gpio:
+	priv->enable_flag &= ~BIT(id);
+	return 0;
+}
+
+static int rt4801_is_enabled(struct regulator_dev *rdev)
+{
+	struct rt4801_priv *priv = rdev_get_drvdata(rdev);
+	int id = rdev_get_id(rdev);
+
+	return !!(priv->enable_flag & BIT(id));
+}
+
+static const struct regulator_ops rt4801_regulator_ops = {
+	.list_voltage = regulator_list_voltage_linear,
+	.set_voltage_sel = rt4801_set_voltage_sel,
+	.get_voltage_sel = rt4801_get_voltage_sel,
+	.enable = rt4801_enable,
+	.disable = rt4801_disable,
+	.is_enabled = rt4801_is_enabled,
+};
+
+static const struct regulator_desc rt4801_regulator_descs[] = {
+	{
+		.name = "DSVP",
+		.ops = &rt4801_regulator_ops,
+		.of_match = of_match_ptr("DSVP"),
+		.of_parse_cb = rt4801_of_parse_cb,
+		.type = REGULATOR_VOLTAGE,
+		.id = DSV_OUT_POS,
+		.min_uV = MIN_UV,
+		.uV_step = STEP_UV,
+		.n_voltages = N_VOLTAGES,
+		.owner = THIS_MODULE,
+		.vsel_reg = RT4801_REG_VOP,
+		.vsel_mask = VOUT_MASK,
+	},
+	{
+		.name = "DSVN",
+		.ops = &rt4801_regulator_ops,
+		.of_match = of_match_ptr("DSVN"),
+		.of_parse_cb = rt4801_of_parse_cb,
+		.type = REGULATOR_VOLTAGE,
+		.id = DSV_OUT_NEG,
+		.min_uV = MIN_UV,
+		.uV_step = STEP_UV,
+		.n_voltages = N_VOLTAGES,
+		.owner = THIS_MODULE,
+		.vsel_reg = RT4801_REG_VON,
+		.vsel_mask = VOUT_MASK,
+	},
+};
+
+static const struct regmap_config rt4801_regmap_config = {
+	.reg_bits = 8,
+	.val_bits = 8,
+	.max_register = RT4801_REG_APPS,
+};
+
+static int rt4801_probe(struct i2c_client *i2c)
+{
+	struct rt4801_priv *priv;
+	struct regmap *regmap;
+	int i;
+
+	priv = devm_kzalloc(&i2c->dev, sizeof(*priv), GFP_KERNEL);
+	if (!priv)
+		return -ENOMEM;
+
+	priv->dev = &i2c->dev;
+	/* bootloader will on, driver only reconfigure enable to all output high */
+	priv->enable_flag = DSVALL_ENABLE;
+
+	regmap = devm_regmap_init_i2c(i2c, &rt4801_regmap_config);
+	if (IS_ERR(regmap)) {
+		dev_err(&i2c->dev, "Failed to init regmap\n");
+		return PTR_ERR(regmap);
+	}
+
+	for (i = 0; i < DSV_OUT_MAX; i++) {
+		priv->enable_gpios[i] = devm_gpiod_get_index_optional(&i2c->dev,
+								      "enable",
+								      i,
+								      GPIOD_OUT_HIGH);
+		if (IS_ERR(priv->enable_gpios[i])) {
+			dev_err(&i2c->dev, "Failed to get gpios\n");
+			return PTR_ERR(priv->enable_gpios[i]);
+		}
+	}
+
+	for (i = 0; i < DSV_OUT_MAX; i++) {
+		const struct regulator_desc *desc = rt4801_regulator_descs + i;
+		struct regulator_config config = { .dev = &i2c->dev, .driver_data = priv,
+						   .regmap = regmap, };
+		struct regulator_dev *rdev;
+		unsigned int val;
+		int ret;
+
+		/* initialize volt_sel variable */
+		ret = regmap_read(regmap, desc->vsel_reg, &val);
+		if (ret)
+			return ret;
+
+		priv->volt_sel[i] = val & desc->vsel_mask;
+
+		rdev = devm_regulator_register(&i2c->dev, desc, &config);
+		if (IS_ERR(rdev)) {
+			dev_err(&i2c->dev, "Failed to register [%d] regulator\n", i);
+			return PTR_ERR(rdev);
+		}
+	}
+
+	return 0;
+}
+
+static const struct of_device_id __maybe_unused rt4801_of_id[] = {
+	{ .compatible = "richtek,rt4801", },
+	{ },
+};
+MODULE_DEVICE_TABLE(of, rt4801_of_id);
+
+static struct i2c_driver rt4801_driver = {
+	.driver = {
+		.name = "rt4801",
+		.of_match_table = of_match_ptr(rt4801_of_id),
+	},
+	.probe_new = rt4801_probe,
+};
+module_i2c_driver(rt4801_driver);
+
+MODULE_AUTHOR("ChiYuan Hwang <cy_huang@richtek.com>");
+MODULE_DESCRIPTION("Richtek RT4801 Display Bias Driver");
+MODULE_LICENSE("GPL v2");