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author | 2023-02-21 18:24:12 -0800 | |
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committer | 2023-02-21 18:24:12 -0800 | |
commit | 5b7c4cabbb65f5c469464da6c5f614cbd7f730f2 (patch) | |
tree | cc5c2d0a898769fd59549594fedb3ee6f84e59a0 /drivers/input/rmi4/rmi_f3a.c | |
download | linux-5b7c4cabbb65f5c469464da6c5f614cbd7f730f2.tar.gz linux-5b7c4cabbb65f5c469464da6c5f614cbd7f730f2.zip |
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().
...
Diffstat (limited to 'drivers/input/rmi4/rmi_f3a.c')
-rw-r--r-- | drivers/input/rmi4/rmi_f3a.c | 241 |
1 files changed, 241 insertions, 0 deletions
diff --git a/drivers/input/rmi4/rmi_f3a.c b/drivers/input/rmi4/rmi_f3a.c new file mode 100644 index 000000000..0e8baed84 --- /dev/null +++ b/drivers/input/rmi4/rmi_f3a.c @@ -0,0 +1,241 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * Copyright (c) 2012-2020 Synaptics Incorporated + */ + +#include <linux/kernel.h> +#include <linux/rmi.h> +#include <linux/input.h> +#include <linux/slab.h> +#include "rmi_driver.h" + +#define RMI_F3A_MAX_GPIO_COUNT 128 +#define RMI_F3A_MAX_REG_SIZE DIV_ROUND_UP(RMI_F3A_MAX_GPIO_COUNT, 8) + +/* Defs for Query 0 */ +#define RMI_F3A_GPIO_COUNT 0x7F + +#define RMI_F3A_DATA_REGS_MAX_SIZE RMI_F3A_MAX_REG_SIZE + +#define TRACKSTICK_RANGE_START 3 +#define TRACKSTICK_RANGE_END 6 + +struct f3a_data { + /* Query Data */ + u8 gpio_count; + + u8 register_count; + + u8 data_regs[RMI_F3A_DATA_REGS_MAX_SIZE]; + u16 *gpio_key_map; + + struct input_dev *input; + + struct rmi_function *f03; + bool trackstick_buttons; +}; + +static void rmi_f3a_report_button(struct rmi_function *fn, + struct f3a_data *f3a, unsigned int button) +{ + u16 key_code = f3a->gpio_key_map[button]; + bool key_down = !(f3a->data_regs[0] & BIT(button)); + + if (f3a->trackstick_buttons && + button >= TRACKSTICK_RANGE_START && + button <= TRACKSTICK_RANGE_END) { + rmi_f03_overwrite_button(f3a->f03, key_code, key_down); + } else { + rmi_dbg(RMI_DEBUG_FN, &fn->dev, + "%s: call input report key (0x%04x) value (0x%02x)", + __func__, key_code, key_down); + input_report_key(f3a->input, key_code, key_down); + } +} + +static irqreturn_t rmi_f3a_attention(int irq, void *ctx) +{ + struct rmi_function *fn = ctx; + struct f3a_data *f3a = dev_get_drvdata(&fn->dev); + struct rmi_driver_data *drvdata = dev_get_drvdata(&fn->rmi_dev->dev); + int error; + int i; + + if (drvdata->attn_data.data) { + if (drvdata->attn_data.size < f3a->register_count) { + dev_warn(&fn->dev, + "F3A interrupted, but data is missing\n"); + return IRQ_HANDLED; + } + memcpy(f3a->data_regs, drvdata->attn_data.data, + f3a->register_count); + drvdata->attn_data.data += f3a->register_count; + drvdata->attn_data.size -= f3a->register_count; + } else { + error = rmi_read_block(fn->rmi_dev, fn->fd.data_base_addr, + f3a->data_regs, f3a->register_count); + if (error) { + dev_err(&fn->dev, + "%s: Failed to read F3a data registers: %d\n", + __func__, error); + return IRQ_RETVAL(error); + } + } + + for (i = 0; i < f3a->gpio_count; i++) + if (f3a->gpio_key_map[i] != KEY_RESERVED) + rmi_f3a_report_button(fn, f3a, i); + if (f3a->trackstick_buttons) + rmi_f03_commit_buttons(f3a->f03); + + return IRQ_HANDLED; +} + +static int rmi_f3a_config(struct rmi_function *fn) +{ + struct f3a_data *f3a = dev_get_drvdata(&fn->dev); + struct rmi_driver *drv = fn->rmi_dev->driver; + const struct rmi_device_platform_data *pdata = + rmi_get_platform_data(fn->rmi_dev); + + if (!f3a) + return 0; + + if (pdata->gpio_data.trackstick_buttons) { + /* Try [re-]establish link to F03. */ + f3a->f03 = rmi_find_function(fn->rmi_dev, 0x03); + f3a->trackstick_buttons = f3a->f03 != NULL; + } + + drv->set_irq_bits(fn->rmi_dev, fn->irq_mask); + + return 0; +} + +static bool rmi_f3a_is_valid_button(int button, struct f3a_data *f3a, + u8 *query1_regs, u8 *ctrl1_regs) +{ + /* gpio exist && direction input */ + return (query1_regs[0] & BIT(button)) && !(ctrl1_regs[0] & BIT(button)); +} + +static int rmi_f3a_map_gpios(struct rmi_function *fn, struct f3a_data *f3a, + u8 *query1_regs, u8 *ctrl1_regs) +{ + const struct rmi_device_platform_data *pdata = + rmi_get_platform_data(fn->rmi_dev); + struct input_dev *input = f3a->input; + unsigned int button = BTN_LEFT; + unsigned int trackstick_button = BTN_LEFT; + bool button_mapped = false; + int i; + int button_count = min_t(u8, f3a->gpio_count, TRACKSTICK_RANGE_END); + + f3a->gpio_key_map = devm_kcalloc(&fn->dev, + button_count, + sizeof(f3a->gpio_key_map[0]), + GFP_KERNEL); + if (!f3a->gpio_key_map) { + dev_err(&fn->dev, "Failed to allocate gpio map memory.\n"); + return -ENOMEM; + } + + for (i = 0; i < button_count; i++) { + if (!rmi_f3a_is_valid_button(i, f3a, query1_regs, ctrl1_regs)) + continue; + + if (pdata->gpio_data.trackstick_buttons && + i >= TRACKSTICK_RANGE_START && + i < TRACKSTICK_RANGE_END) { + f3a->gpio_key_map[i] = trackstick_button++; + } else if (!pdata->gpio_data.buttonpad || !button_mapped) { + f3a->gpio_key_map[i] = button; + input_set_capability(input, EV_KEY, button++); + button_mapped = true; + } + } + input->keycode = f3a->gpio_key_map; + input->keycodesize = sizeof(f3a->gpio_key_map[0]); + input->keycodemax = f3a->gpio_count; + + if (pdata->gpio_data.buttonpad || (button - BTN_LEFT == 1)) + __set_bit(INPUT_PROP_BUTTONPAD, input->propbit); + + return 0; +} + +static int rmi_f3a_initialize(struct rmi_function *fn, struct f3a_data *f3a) +{ + u8 query1[RMI_F3A_MAX_REG_SIZE]; + u8 ctrl1[RMI_F3A_MAX_REG_SIZE]; + u8 buf; + int error; + + error = rmi_read(fn->rmi_dev, fn->fd.query_base_addr, &buf); + if (error < 0) { + dev_err(&fn->dev, "Failed to read general info register: %d\n", + error); + return -ENODEV; + } + + f3a->gpio_count = buf & RMI_F3A_GPIO_COUNT; + f3a->register_count = DIV_ROUND_UP(f3a->gpio_count, 8); + + /* Query1 -> gpio exist */ + error = rmi_read_block(fn->rmi_dev, fn->fd.query_base_addr + 1, + query1, f3a->register_count); + if (error) { + dev_err(&fn->dev, "Failed to read query1 register\n"); + return error; + } + + /* Ctrl1 -> gpio direction */ + error = rmi_read_block(fn->rmi_dev, fn->fd.control_base_addr + 1, + ctrl1, f3a->register_count); + if (error) { + dev_err(&fn->dev, "Failed to read control1 register\n"); + return error; + } + + error = rmi_f3a_map_gpios(fn, f3a, query1, ctrl1); + if (error) + return error; + + return 0; +} + +static int rmi_f3a_probe(struct rmi_function *fn) +{ + struct rmi_device *rmi_dev = fn->rmi_dev; + struct rmi_driver_data *drv_data = dev_get_drvdata(&rmi_dev->dev); + struct f3a_data *f3a; + int error; + + if (!drv_data->input) { + dev_info(&fn->dev, "F3A: no input device found, ignoring\n"); + return -ENXIO; + } + + f3a = devm_kzalloc(&fn->dev, sizeof(*f3a), GFP_KERNEL); + if (!f3a) + return -ENOMEM; + + f3a->input = drv_data->input; + + error = rmi_f3a_initialize(fn, f3a); + if (error) + return error; + + dev_set_drvdata(&fn->dev, f3a); + return 0; +} + +struct rmi_function_handler rmi_f3a_handler = { + .driver = { + .name = "rmi4_f3a", + }, + .func = 0x3a, + .probe = rmi_f3a_probe, + .config = rmi_f3a_config, + .attention = rmi_f3a_attention, +}; 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