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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/media/rc/ttusbir.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/media/rc/ttusbir.c')
-rw-r--r-- | drivers/media/rc/ttusbir.c | 434 |
1 files changed, 434 insertions, 0 deletions
diff --git a/drivers/media/rc/ttusbir.c b/drivers/media/rc/ttusbir.c new file mode 100644 index 000000000..560a26f39 --- /dev/null +++ b/drivers/media/rc/ttusbir.c @@ -0,0 +1,434 @@ +// SPDX-License-Identifier: GPL-2.0-or-later +/* + * TechnoTrend USB IR Receiver + * + * Copyright (C) 2012 Sean Young <sean@mess.org> + */ + +#include <linux/module.h> +#include <linux/usb.h> +#include <linux/usb/input.h> +#include <linux/slab.h> +#include <linux/leds.h> +#include <media/rc-core.h> + +#define DRIVER_NAME "ttusbir" +#define DRIVER_DESC "TechnoTrend USB IR Receiver" +/* + * The Windows driver uses 8 URBS, the original lirc drivers has a + * configurable amount (2 default, 4 max). This device generates about 125 + * messages per second (!), whether IR is idle or not. + */ +#define NUM_URBS 4 +#define US_PER_BYTE 62 +#define US_PER_BIT (US_PER_BYTE / 8) + +struct ttusbir { + struct rc_dev *rc; + struct device *dev; + struct usb_device *udev; + + struct urb *urb[NUM_URBS]; + + struct led_classdev led; + struct urb *bulk_urb; + uint8_t bulk_buffer[5]; + int bulk_out_endp, iso_in_endp; + bool led_on, is_led_on; + atomic_t led_complete; + + char phys[64]; +}; + +static enum led_brightness ttusbir_brightness_get(struct led_classdev *led_dev) +{ + struct ttusbir *tt = container_of(led_dev, struct ttusbir, led); + + return tt->led_on ? LED_FULL : LED_OFF; +} + +static void ttusbir_set_led(struct ttusbir *tt) +{ + int ret; + + smp_mb(); + + if (tt->led_on != tt->is_led_on && tt->udev && + atomic_add_unless(&tt->led_complete, 1, 1)) { + tt->bulk_buffer[4] = tt->is_led_on = tt->led_on; + ret = usb_submit_urb(tt->bulk_urb, GFP_ATOMIC); + if (ret) { + dev_warn(tt->dev, "failed to submit bulk urb: %d\n", + ret); + atomic_dec(&tt->led_complete); + } + } +} + +static void ttusbir_brightness_set(struct led_classdev *led_dev, enum + led_brightness brightness) +{ + struct ttusbir *tt = container_of(led_dev, struct ttusbir, led); + + tt->led_on = brightness != LED_OFF; + + ttusbir_set_led(tt); +} + +/* + * The urb cannot be reused until the urb completes + */ +static void ttusbir_bulk_complete(struct urb *urb) +{ + struct ttusbir *tt = urb->context; + + atomic_dec(&tt->led_complete); + + switch (urb->status) { + case 0: + break; + case -ECONNRESET: + case -ENOENT: + case -ESHUTDOWN: + return; + case -EPIPE: + default: + dev_dbg(tt->dev, "Error: urb status = %d\n", urb->status); + break; + } + + ttusbir_set_led(tt); +} + +/* + * The data is one bit per sample, a set bit signifying silence and samples + * being MSB first. Bit 0 can contain garbage so take it to be whatever + * bit 1 is, so we don't have unexpected edges. + */ +static void ttusbir_process_ir_data(struct ttusbir *tt, uint8_t *buf) +{ + struct ir_raw_event rawir = {}; + unsigned i, v, b; + bool event = false; + + for (i = 0; i < 128; i++) { + v = buf[i] & 0xfe; + switch (v) { + case 0xfe: + rawir.pulse = false; + rawir.duration = US_PER_BYTE; + if (ir_raw_event_store_with_filter(tt->rc, &rawir)) + event = true; + break; + case 0: + rawir.pulse = true; + rawir.duration = US_PER_BYTE; + if (ir_raw_event_store_with_filter(tt->rc, &rawir)) + event = true; + break; + default: + /* one edge per byte */ + if (v & 2) { + b = ffz(v | 1); + rawir.pulse = true; + } else { + b = ffs(v) - 1; + rawir.pulse = false; + } + + rawir.duration = US_PER_BIT * (8 - b); + if (ir_raw_event_store_with_filter(tt->rc, &rawir)) + event = true; + + rawir.pulse = !rawir.pulse; + rawir.duration = US_PER_BIT * b; + if (ir_raw_event_store_with_filter(tt->rc, &rawir)) + event = true; + break; + } + } + + /* don't wakeup when there's nothing to do */ + if (event) + ir_raw_event_handle(tt->rc); +} + +static void ttusbir_urb_complete(struct urb *urb) +{ + struct ttusbir *tt = urb->context; + int rc; + + switch (urb->status) { + case 0: + ttusbir_process_ir_data(tt, urb->transfer_buffer); + break; + case -ECONNRESET: + case -ENOENT: + case -ESHUTDOWN: + return; + case -EPIPE: + default: + dev_dbg(tt->dev, "Error: urb status = %d\n", urb->status); + break; + } + + rc = usb_submit_urb(urb, GFP_ATOMIC); + if (rc && rc != -ENODEV) + dev_warn(tt->dev, "failed to resubmit urb: %d\n", rc); +} + +static int ttusbir_probe(struct usb_interface *intf, + const struct usb_device_id *id) +{ + struct ttusbir *tt; + struct usb_interface_descriptor *idesc; + struct usb_endpoint_descriptor *desc; + struct rc_dev *rc; + int i, j, ret; + int altsetting = -1; + + tt = kzalloc(sizeof(*tt), GFP_KERNEL); + rc = rc_allocate_device(RC_DRIVER_IR_RAW); + if (!tt || !rc) { + ret = -ENOMEM; + goto out; + } + + /* find the correct alt setting */ + for (i = 0; i < intf->num_altsetting && altsetting == -1; i++) { + int max_packet, bulk_out_endp = -1, iso_in_endp = -1; + + idesc = &intf->altsetting[i].desc; + + for (j = 0; j < idesc->bNumEndpoints; j++) { + desc = &intf->altsetting[i].endpoint[j].desc; + max_packet = le16_to_cpu(desc->wMaxPacketSize); + if (usb_endpoint_dir_in(desc) && + usb_endpoint_xfer_isoc(desc) && + max_packet == 0x10) + iso_in_endp = j; + else if (usb_endpoint_dir_out(desc) && + usb_endpoint_xfer_bulk(desc) && + max_packet == 0x20) + bulk_out_endp = j; + + if (bulk_out_endp != -1 && iso_in_endp != -1) { + tt->bulk_out_endp = bulk_out_endp; + tt->iso_in_endp = iso_in_endp; + altsetting = i; + break; + } + } + } + + if (altsetting == -1) { + dev_err(&intf->dev, "cannot find expected altsetting\n"); + ret = -ENODEV; + goto out; + } + + tt->dev = &intf->dev; + tt->udev = interface_to_usbdev(intf); + tt->rc = rc; + + ret = usb_set_interface(tt->udev, 0, altsetting); + if (ret) + goto out; + + for (i = 0; i < NUM_URBS; i++) { + struct urb *urb = usb_alloc_urb(8, GFP_KERNEL); + void *buffer; + + if (!urb) { + ret = -ENOMEM; + goto out; + } + + urb->dev = tt->udev; + urb->context = tt; + urb->pipe = usb_rcvisocpipe(tt->udev, tt->iso_in_endp); + urb->interval = 1; + buffer = usb_alloc_coherent(tt->udev, 128, GFP_KERNEL, + &urb->transfer_dma); + if (!buffer) { + usb_free_urb(urb); + ret = -ENOMEM; + goto out; + } + urb->transfer_flags = URB_NO_TRANSFER_DMA_MAP | URB_ISO_ASAP; + urb->transfer_buffer = buffer; + urb->complete = ttusbir_urb_complete; + urb->number_of_packets = 8; + urb->transfer_buffer_length = 128; + + for (j = 0; j < 8; j++) { + urb->iso_frame_desc[j].offset = j * 16; + urb->iso_frame_desc[j].length = 16; + } + + tt->urb[i] = urb; + } + + tt->bulk_urb = usb_alloc_urb(0, GFP_KERNEL); + if (!tt->bulk_urb) { + ret = -ENOMEM; + goto out; + } + + tt->bulk_buffer[0] = 0xaa; + tt->bulk_buffer[1] = 0x01; + tt->bulk_buffer[2] = 0x05; + tt->bulk_buffer[3] = 0x01; + + usb_fill_bulk_urb(tt->bulk_urb, tt->udev, usb_sndbulkpipe(tt->udev, + tt->bulk_out_endp), tt->bulk_buffer, sizeof(tt->bulk_buffer), + ttusbir_bulk_complete, tt); + + tt->led.name = "ttusbir:green:power"; + tt->led.default_trigger = "rc-feedback"; + tt->led.brightness_set = ttusbir_brightness_set; + tt->led.brightness_get = ttusbir_brightness_get; + tt->is_led_on = tt->led_on = true; + atomic_set(&tt->led_complete, 0); + ret = led_classdev_register(&intf->dev, &tt->led); + if (ret) + goto out; + + usb_make_path(tt->udev, tt->phys, sizeof(tt->phys)); + + rc->device_name = DRIVER_DESC; + rc->input_phys = tt->phys; + usb_to_input_id(tt->udev, &rc->input_id); + rc->dev.parent = &intf->dev; + rc->allowed_protocols = RC_PROTO_BIT_ALL_IR_DECODER; + rc->priv = tt; + rc->driver_name = DRIVER_NAME; + rc->map_name = RC_MAP_TT_1500; + rc->min_timeout = 1; + rc->timeout = IR_DEFAULT_TIMEOUT; + rc->max_timeout = 10 * IR_DEFAULT_TIMEOUT; + + /* + * The precision is US_PER_BIT, but since every 8th bit can be + * overwritten with garbage the accuracy is at best 2 * US_PER_BIT. + */ + rc->rx_resolution = 2 * US_PER_BIT; + + ret = rc_register_device(rc); + if (ret) { + dev_err(&intf->dev, "failed to register rc device %d\n", ret); + goto out2; + } + + usb_set_intfdata(intf, tt); + + for (i = 0; i < NUM_URBS; i++) { + ret = usb_submit_urb(tt->urb[i], GFP_KERNEL); + if (ret) { + dev_err(tt->dev, "failed to submit urb %d\n", ret); + goto out3; + } + } + + return 0; +out3: + rc_unregister_device(rc); + rc = NULL; +out2: + led_classdev_unregister(&tt->led); +out: + if (tt) { + for (i = 0; i < NUM_URBS && tt->urb[i]; i++) { + struct urb *urb = tt->urb[i]; + + usb_kill_urb(urb); + usb_free_coherent(tt->udev, 128, urb->transfer_buffer, + urb->transfer_dma); + usb_free_urb(urb); + } + usb_kill_urb(tt->bulk_urb); + usb_free_urb(tt->bulk_urb); + kfree(tt); + } + rc_free_device(rc); + + return ret; +} + +static void ttusbir_disconnect(struct usb_interface *intf) +{ + struct ttusbir *tt = usb_get_intfdata(intf); + struct usb_device *udev = tt->udev; + int i; + + tt->udev = NULL; + + rc_unregister_device(tt->rc); + led_classdev_unregister(&tt->led); + for (i = 0; i < NUM_URBS; i++) { + usb_kill_urb(tt->urb[i]); + usb_free_coherent(udev, 128, tt->urb[i]->transfer_buffer, + tt->urb[i]->transfer_dma); + usb_free_urb(tt->urb[i]); + } + usb_kill_urb(tt->bulk_urb); + usb_free_urb(tt->bulk_urb); + usb_set_intfdata(intf, NULL); + kfree(tt); +} + +static int ttusbir_suspend(struct usb_interface *intf, pm_message_t message) +{ + struct ttusbir *tt = usb_get_intfdata(intf); + int i; + + for (i = 0; i < NUM_URBS; i++) + usb_kill_urb(tt->urb[i]); + + led_classdev_suspend(&tt->led); + usb_kill_urb(tt->bulk_urb); + + return 0; +} + +static int ttusbir_resume(struct usb_interface *intf) +{ + struct ttusbir *tt = usb_get_intfdata(intf); + int i, rc; + + tt->is_led_on = true; + led_classdev_resume(&tt->led); + + for (i = 0; i < NUM_URBS; i++) { + rc = usb_submit_urb(tt->urb[i], GFP_NOIO); + if (rc) { + dev_warn(tt->dev, "failed to submit urb: %d\n", rc); + break; + } + } + + return rc; +} + +static const struct usb_device_id ttusbir_table[] = { + { USB_DEVICE(0x0b48, 0x2003) }, + { } +}; + +static struct usb_driver ttusbir_driver = { + .name = DRIVER_NAME, + .id_table = ttusbir_table, + .probe = ttusbir_probe, + .suspend = ttusbir_suspend, + .resume = ttusbir_resume, + .reset_resume = ttusbir_resume, + .disconnect = ttusbir_disconnect, +}; + +module_usb_driver(ttusbir_driver); + +MODULE_DESCRIPTION(DRIVER_DESC); +MODULE_AUTHOR("Sean Young <sean@mess.org>"); +MODULE_LICENSE("GPL"); +MODULE_DEVICE_TABLE(usb, ttusbir_table); + |