From 5b7c4cabbb65f5c469464da6c5f614cbd7f730f2 Mon Sep 17 00:00:00 2001 From: Linus Torvalds Date: Tue, 21 Feb 2023 18:24:12 -0800 Subject: Merge tag 'net-next-6.3' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next 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(). ... --- drivers/input/mouse/focaltech.c | 456 ++++++++++++++++++++++++++++++++++++++++ 1 file changed, 456 insertions(+) create mode 100644 drivers/input/mouse/focaltech.c (limited to 'drivers/input/mouse/focaltech.c') diff --git a/drivers/input/mouse/focaltech.c b/drivers/input/mouse/focaltech.c new file mode 100644 index 000000000..6fd5fff0c --- /dev/null +++ b/drivers/input/mouse/focaltech.c @@ -0,0 +1,456 @@ +// SPDX-License-Identifier: GPL-2.0-or-later +/* + * Focaltech TouchPad PS/2 mouse driver + * + * Copyright (c) 2014 Red Hat Inc. + * Copyright (c) 2014 Mathias Gottschlag + * + * Red Hat authors: + * + * Hans de Goede + */ + + +#include +#include +#include +#include +#include +#include "psmouse.h" +#include "focaltech.h" + +static const char * const focaltech_pnp_ids[] = { + "FLT0101", + "FLT0102", + "FLT0103", + NULL +}; + +/* + * Even if the kernel is built without support for Focaltech PS/2 touchpads (or + * when the real driver fails to recognize the device), we still have to detect + * them in order to avoid further detection attempts confusing the touchpad. + * This way it at least works in PS/2 mouse compatibility mode. + */ +int focaltech_detect(struct psmouse *psmouse, bool set_properties) +{ + if (!psmouse_matches_pnp_id(psmouse, focaltech_pnp_ids)) + return -ENODEV; + + if (set_properties) { + psmouse->vendor = "FocalTech"; + psmouse->name = "Touchpad"; + } + + return 0; +} + +#ifdef CONFIG_MOUSE_PS2_FOCALTECH + +/* + * Packet types - the numbers are not consecutive, so we might be missing + * something here. + */ +#define FOC_TOUCH 0x3 /* bitmap of active fingers */ +#define FOC_ABS 0x6 /* absolute position of one finger */ +#define FOC_REL 0x9 /* relative position of 1-2 fingers */ + +#define FOC_MAX_FINGERS 5 + +/* + * Current state of a single finger on the touchpad. + */ +struct focaltech_finger_state { + /* The touchpad has generated a touch event for the finger */ + bool active; + + /* + * The touchpad has sent position data for the finger. The + * flag is 0 when the finger is not active, and there is a + * time between the first touch event for the finger and the + * following absolute position packet for the finger where the + * touchpad has declared the finger to be valid, but we do not + * have any valid position yet. + */ + bool valid; + + /* + * Absolute position (from the bottom left corner) of the + * finger. + */ + unsigned int x; + unsigned int y; +}; + +/* + * Description of the current state of the touchpad hardware. + */ +struct focaltech_hw_state { + /* + * The touchpad tracks the positions of the fingers for us, + * the array indices correspond to the finger indices returned + * in the report packages. + */ + struct focaltech_finger_state fingers[FOC_MAX_FINGERS]; + + /* + * Finger width 0-7 and 15 for a very big contact area. + * 15 value stays until the finger is released. + * Width is reported only in absolute packets. + * Since hardware reports width only for last touching finger, + * there is no need to store width for every specific finger, + * so we keep only last value reported. + */ + unsigned int width; + + /* True if the clickpad has been pressed. */ + bool pressed; +}; + +struct focaltech_data { + unsigned int x_max, y_max; + struct focaltech_hw_state state; +}; + +static void focaltech_report_state(struct psmouse *psmouse) +{ + struct focaltech_data *priv = psmouse->private; + struct focaltech_hw_state *state = &priv->state; + struct input_dev *dev = psmouse->dev; + int i; + + for (i = 0; i < FOC_MAX_FINGERS; i++) { + struct focaltech_finger_state *finger = &state->fingers[i]; + bool active = finger->active && finger->valid; + + input_mt_slot(dev, i); + input_mt_report_slot_state(dev, MT_TOOL_FINGER, active); + if (active) { + unsigned int clamped_x, clamped_y; + /* + * The touchpad might report invalid data, so we clamp + * the resulting values so that we do not confuse + * userspace. + */ + clamped_x = clamp(finger->x, 0U, priv->x_max); + clamped_y = clamp(finger->y, 0U, priv->y_max); + input_report_abs(dev, ABS_MT_POSITION_X, clamped_x); + input_report_abs(dev, ABS_MT_POSITION_Y, + priv->y_max - clamped_y); + input_report_abs(dev, ABS_TOOL_WIDTH, state->width); + } + } + input_mt_report_pointer_emulation(dev, true); + + input_report_key(dev, BTN_LEFT, state->pressed); + input_sync(dev); +} + +static void focaltech_process_touch_packet(struct psmouse *psmouse, + unsigned char *packet) +{ + struct focaltech_data *priv = psmouse->private; + struct focaltech_hw_state *state = &priv->state; + unsigned char fingers = packet[1]; + int i; + + state->pressed = (packet[0] >> 4) & 1; + + /* the second byte contains a bitmap of all fingers touching the pad */ + for (i = 0; i < FOC_MAX_FINGERS; i++) { + state->fingers[i].active = fingers & 0x1; + if (!state->fingers[i].active) { + /* + * Even when the finger becomes active again, we still + * will have to wait for the first valid position. + */ + state->fingers[i].valid = false; + } + fingers >>= 1; + } +} + +static void focaltech_process_abs_packet(struct psmouse *psmouse, + unsigned char *packet) +{ + struct focaltech_data *priv = psmouse->private; + struct focaltech_hw_state *state = &priv->state; + unsigned int finger; + + finger = (packet[1] >> 4) - 1; + if (finger >= FOC_MAX_FINGERS) { + psmouse_err(psmouse, "Invalid finger in abs packet: %d\n", + finger); + return; + } + + state->pressed = (packet[0] >> 4) & 1; + + state->fingers[finger].x = ((packet[1] & 0xf) << 8) | packet[2]; + state->fingers[finger].y = (packet[3] << 8) | packet[4]; + state->width = packet[5] >> 4; + state->fingers[finger].valid = true; +} + +static void focaltech_process_rel_packet(struct psmouse *psmouse, + unsigned char *packet) +{ + struct focaltech_data *priv = psmouse->private; + struct focaltech_hw_state *state = &priv->state; + int finger1, finger2; + + state->pressed = packet[0] >> 7; + finger1 = ((packet[0] >> 4) & 0x7) - 1; + if (finger1 < FOC_MAX_FINGERS) { + state->fingers[finger1].x += (char)packet[1]; + state->fingers[finger1].y += (char)packet[2]; + } else { + psmouse_err(psmouse, "First finger in rel packet invalid: %d\n", + finger1); + } + + /* + * If there is an odd number of fingers, the last relative + * packet only contains one finger. In this case, the second + * finger index in the packet is 0 (we subtract 1 in the lines + * above to create array indices, so the finger will overflow + * and be above FOC_MAX_FINGERS). + */ + finger2 = ((packet[3] >> 4) & 0x7) - 1; + if (finger2 < FOC_MAX_FINGERS) { + state->fingers[finger2].x += (char)packet[4]; + state->fingers[finger2].y += (char)packet[5]; + } +} + +static void focaltech_process_packet(struct psmouse *psmouse) +{ + unsigned char *packet = psmouse->packet; + + switch (packet[0] & 0xf) { + case FOC_TOUCH: + focaltech_process_touch_packet(psmouse, packet); + break; + + case FOC_ABS: + focaltech_process_abs_packet(psmouse, packet); + break; + + case FOC_REL: + focaltech_process_rel_packet(psmouse, packet); + break; + + default: + psmouse_err(psmouse, "Unknown packet type: %02x\n", packet[0]); + break; + } + + focaltech_report_state(psmouse); +} + +static psmouse_ret_t focaltech_process_byte(struct psmouse *psmouse) +{ + if (psmouse->pktcnt >= 6) { /* Full packet received */ + focaltech_process_packet(psmouse); + return PSMOUSE_FULL_PACKET; + } + + /* + * We might want to do some validation of the data here, but + * we do not know the protocol well enough + */ + return PSMOUSE_GOOD_DATA; +} + +static int focaltech_switch_protocol(struct psmouse *psmouse) +{ + struct ps2dev *ps2dev = &psmouse->ps2dev; + unsigned char param[3]; + + param[0] = 0; + if (ps2_command(ps2dev, param, 0x10f8)) + return -EIO; + + if (ps2_command(ps2dev, param, 0x10f8)) + return -EIO; + + if (ps2_command(ps2dev, param, 0x10f8)) + return -EIO; + + param[0] = 1; + if (ps2_command(ps2dev, param, 0x10f8)) + return -EIO; + + if (ps2_command(ps2dev, param, PSMOUSE_CMD_SETSCALE11)) + return -EIO; + + if (ps2_command(ps2dev, param, PSMOUSE_CMD_ENABLE)) + return -EIO; + + return 0; +} + +static void focaltech_reset(struct psmouse *psmouse) +{ + ps2_command(&psmouse->ps2dev, NULL, PSMOUSE_CMD_RESET_DIS); + psmouse_reset(psmouse); +} + +static void focaltech_disconnect(struct psmouse *psmouse) +{ + focaltech_reset(psmouse); + kfree(psmouse->private); + psmouse->private = NULL; +} + +static int focaltech_reconnect(struct psmouse *psmouse) +{ + int error; + + focaltech_reset(psmouse); + + error = focaltech_switch_protocol(psmouse); + if (error) { + psmouse_err(psmouse, "Unable to initialize the device\n"); + return error; + } + + return 0; +} + +static void focaltech_set_input_params(struct psmouse *psmouse) +{ + struct input_dev *dev = psmouse->dev; + struct focaltech_data *priv = psmouse->private; + + /* + * Undo part of setup done for us by psmouse core since touchpad + * is not a relative device. + */ + __clear_bit(EV_REL, dev->evbit); + __clear_bit(REL_X, dev->relbit); + __clear_bit(REL_Y, dev->relbit); + __clear_bit(BTN_RIGHT, dev->keybit); + __clear_bit(BTN_MIDDLE, dev->keybit); + + /* + * Now set up our capabilities. + */ + __set_bit(EV_ABS, dev->evbit); + input_set_abs_params(dev, ABS_MT_POSITION_X, 0, priv->x_max, 0, 0); + input_set_abs_params(dev, ABS_MT_POSITION_Y, 0, priv->y_max, 0, 0); + input_set_abs_params(dev, ABS_TOOL_WIDTH, 0, 15, 0, 0); + input_mt_init_slots(dev, 5, INPUT_MT_POINTER); + __set_bit(INPUT_PROP_BUTTONPAD, dev->propbit); +} + +static int focaltech_read_register(struct ps2dev *ps2dev, int reg, + unsigned char *param) +{ + if (ps2_command(ps2dev, param, PSMOUSE_CMD_SETSCALE11)) + return -EIO; + + param[0] = 0; + if (ps2_command(ps2dev, param, PSMOUSE_CMD_SETRES)) + return -EIO; + + if (ps2_command(ps2dev, param, PSMOUSE_CMD_SETRES)) + return -EIO; + + if (ps2_command(ps2dev, param, PSMOUSE_CMD_SETRES)) + return -EIO; + + param[0] = reg; + if (ps2_command(ps2dev, param, PSMOUSE_CMD_SETRES)) + return -EIO; + + if (ps2_command(ps2dev, param, PSMOUSE_CMD_GETINFO)) + return -EIO; + + return 0; +} + +static int focaltech_read_size(struct psmouse *psmouse) +{ + struct ps2dev *ps2dev = &psmouse->ps2dev; + struct focaltech_data *priv = psmouse->private; + char param[3]; + + if (focaltech_read_register(ps2dev, 2, param)) + return -EIO; + + /* not sure whether this is 100% correct */ + priv->x_max = (unsigned char)param[1] * 128; + priv->y_max = (unsigned char)param[2] * 128; + + return 0; +} + +static void focaltech_set_resolution(struct psmouse *psmouse, + unsigned int resolution) +{ + /* not supported yet */ +} + +static void focaltech_set_rate(struct psmouse *psmouse, unsigned int rate) +{ + /* not supported yet */ +} + +static void focaltech_set_scale(struct psmouse *psmouse, + enum psmouse_scale scale) +{ + /* not supported yet */ +} + +int focaltech_init(struct psmouse *psmouse) +{ + struct focaltech_data *priv; + int error; + + psmouse->private = priv = kzalloc(sizeof(struct focaltech_data), + GFP_KERNEL); + if (!priv) + return -ENOMEM; + + focaltech_reset(psmouse); + + error = focaltech_read_size(psmouse); + if (error) { + psmouse_err(psmouse, + "Unable to read the size of the touchpad\n"); + goto fail; + } + + error = focaltech_switch_protocol(psmouse); + if (error) { + psmouse_err(psmouse, "Unable to initialize the device\n"); + goto fail; + } + + focaltech_set_input_params(psmouse); + + psmouse->protocol_handler = focaltech_process_byte; + psmouse->pktsize = 6; + psmouse->disconnect = focaltech_disconnect; + psmouse->reconnect = focaltech_reconnect; + psmouse->cleanup = focaltech_reset; + /* resync is not supported yet */ + psmouse->resync_time = 0; + /* + * rate/resolution/scale changes are not supported yet, and + * the generic implementations of these functions seem to + * confuse some touchpads + */ + psmouse->set_resolution = focaltech_set_resolution; + psmouse->set_rate = focaltech_set_rate; + psmouse->set_scale = focaltech_set_scale; + + return 0; + +fail: + focaltech_reset(psmouse); + kfree(priv); + return error; +} +#endif /* CONFIG_MOUSE_PS2_FOCALTECH */ -- cgit v1.2.3