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/media/radio/si4713/radio-platform-si4713.c | 213 +++++++++++++++++++++ 1 file changed, 213 insertions(+) create mode 100644 drivers/media/radio/si4713/radio-platform-si4713.c (limited to 'drivers/media/radio/si4713/radio-platform-si4713.c') diff --git a/drivers/media/radio/si4713/radio-platform-si4713.c b/drivers/media/radio/si4713/radio-platform-si4713.c new file mode 100644 index 000000000..433f96427 --- /dev/null +++ b/drivers/media/radio/si4713/radio-platform-si4713.c @@ -0,0 +1,213 @@ +// SPDX-License-Identifier: GPL-2.0-or-later +/* + * drivers/media/radio/radio-si4713.c + * + * Platform Driver for Silicon Labs Si4713 FM Radio Transmitter: + * + * Copyright (c) 2008 Instituto Nokia de Tecnologia - INdT + * Contact: Eduardo Valentin + */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include "si4713.h" + +/* module parameters */ +static int radio_nr = -1; /* radio device minor (-1 ==> auto assign) */ +module_param(radio_nr, int, 0); +MODULE_PARM_DESC(radio_nr, + "Minor number for radio device (-1 ==> auto assign)"); + +MODULE_LICENSE("GPL v2"); +MODULE_AUTHOR("Eduardo Valentin "); +MODULE_DESCRIPTION("Platform driver for Si4713 FM Radio Transmitter"); +MODULE_VERSION("0.0.1"); +MODULE_ALIAS("platform:radio-si4713"); + +/* Driver state struct */ +struct radio_si4713_device { + struct v4l2_device v4l2_dev; + struct video_device radio_dev; + struct mutex lock; +}; + +/* radio_si4713_fops - file operations interface */ +static const struct v4l2_file_operations radio_si4713_fops = { + .owner = THIS_MODULE, + .open = v4l2_fh_open, + .release = v4l2_fh_release, + .poll = v4l2_ctrl_poll, + /* Note: locking is done at the subdev level in the i2c driver. */ + .unlocked_ioctl = video_ioctl2, +}; + +/* Video4Linux Interface */ + +/* radio_si4713_querycap - query device capabilities */ +static int radio_si4713_querycap(struct file *file, void *priv, + struct v4l2_capability *capability) +{ + strscpy(capability->driver, "radio-si4713", sizeof(capability->driver)); + strscpy(capability->card, "Silicon Labs Si4713 Modulator", + sizeof(capability->card)); + strscpy(capability->bus_info, "platform:radio-si4713", + sizeof(capability->bus_info)); + return 0; +} + +/* + * v4l2 ioctl call backs. + * we are just a wrapper for v4l2_sub_devs. + */ +static inline struct v4l2_device *get_v4l2_dev(struct file *file) +{ + return &((struct radio_si4713_device *)video_drvdata(file))->v4l2_dev; +} + +static int radio_si4713_g_modulator(struct file *file, void *p, + struct v4l2_modulator *vm) +{ + return v4l2_device_call_until_err(get_v4l2_dev(file), 0, tuner, + g_modulator, vm); +} + +static int radio_si4713_s_modulator(struct file *file, void *p, + const struct v4l2_modulator *vm) +{ + return v4l2_device_call_until_err(get_v4l2_dev(file), 0, tuner, + s_modulator, vm); +} + +static int radio_si4713_g_frequency(struct file *file, void *p, + struct v4l2_frequency *vf) +{ + return v4l2_device_call_until_err(get_v4l2_dev(file), 0, tuner, + g_frequency, vf); +} + +static int radio_si4713_s_frequency(struct file *file, void *p, + const struct v4l2_frequency *vf) +{ + return v4l2_device_call_until_err(get_v4l2_dev(file), 0, tuner, + s_frequency, vf); +} + +static long radio_si4713_default(struct file *file, void *p, + bool valid_prio, unsigned int cmd, void *arg) +{ + return v4l2_device_call_until_err(get_v4l2_dev(file), 0, core, + ioctl, cmd, arg); +} + +static const struct v4l2_ioctl_ops radio_si4713_ioctl_ops = { + .vidioc_querycap = radio_si4713_querycap, + .vidioc_g_modulator = radio_si4713_g_modulator, + .vidioc_s_modulator = radio_si4713_s_modulator, + .vidioc_g_frequency = radio_si4713_g_frequency, + .vidioc_s_frequency = radio_si4713_s_frequency, + .vidioc_log_status = v4l2_ctrl_log_status, + .vidioc_subscribe_event = v4l2_ctrl_subscribe_event, + .vidioc_unsubscribe_event = v4l2_event_unsubscribe, + .vidioc_default = radio_si4713_default, +}; + +/* radio_si4713_vdev_template - video device interface */ +static const struct video_device radio_si4713_vdev_template = { + .fops = &radio_si4713_fops, + .name = "radio-si4713", + .release = video_device_release_empty, + .ioctl_ops = &radio_si4713_ioctl_ops, + .vfl_dir = VFL_DIR_TX, +}; + +/* Platform driver interface */ +/* radio_si4713_pdriver_probe - probe for the device */ +static int radio_si4713_pdriver_probe(struct platform_device *pdev) +{ + struct radio_si4713_platform_data *pdata = pdev->dev.platform_data; + struct radio_si4713_device *rsdev; + struct v4l2_subdev *sd; + int rval = 0; + + if (!pdata) { + dev_err(&pdev->dev, "Cannot proceed without platform data.\n"); + rval = -EINVAL; + goto exit; + } + + rsdev = devm_kzalloc(&pdev->dev, sizeof(*rsdev), GFP_KERNEL); + if (!rsdev) { + dev_err(&pdev->dev, "Failed to alloc video device.\n"); + rval = -ENOMEM; + goto exit; + } + mutex_init(&rsdev->lock); + + rval = v4l2_device_register(&pdev->dev, &rsdev->v4l2_dev); + if (rval) { + dev_err(&pdev->dev, "Failed to register v4l2 device.\n"); + goto exit; + } + + sd = i2c_get_clientdata(pdata->subdev); + rval = v4l2_device_register_subdev(&rsdev->v4l2_dev, sd); + if (rval) { + dev_err(&pdev->dev, "Cannot get v4l2 subdevice\n"); + goto unregister_v4l2_dev; + } + + rsdev->radio_dev = radio_si4713_vdev_template; + rsdev->radio_dev.v4l2_dev = &rsdev->v4l2_dev; + rsdev->radio_dev.ctrl_handler = sd->ctrl_handler; + /* Serialize all access to the si4713 */ + rsdev->radio_dev.lock = &rsdev->lock; + rsdev->radio_dev.device_caps = V4L2_CAP_MODULATOR | V4L2_CAP_RDS_OUTPUT; + video_set_drvdata(&rsdev->radio_dev, rsdev); + if (video_register_device(&rsdev->radio_dev, VFL_TYPE_RADIO, radio_nr)) { + dev_err(&pdev->dev, "Could not register video device.\n"); + rval = -EIO; + goto unregister_v4l2_dev; + } + dev_info(&pdev->dev, "New device successfully probed\n"); + + goto exit; + +unregister_v4l2_dev: + v4l2_device_unregister(&rsdev->v4l2_dev); +exit: + return rval; +} + +/* radio_si4713_pdriver_remove - remove the device */ +static int radio_si4713_pdriver_remove(struct platform_device *pdev) +{ + struct v4l2_device *v4l2_dev = platform_get_drvdata(pdev); + struct radio_si4713_device *rsdev; + + rsdev = container_of(v4l2_dev, struct radio_si4713_device, v4l2_dev); + video_unregister_device(&rsdev->radio_dev); + v4l2_device_unregister(&rsdev->v4l2_dev); + + return 0; +} + +static struct platform_driver radio_si4713_pdriver = { + .driver = { + .name = "radio-si4713", + }, + .probe = radio_si4713_pdriver_probe, + .remove = radio_si4713_pdriver_remove, +}; + +module_platform_driver(radio_si4713_pdriver); -- cgit v1.2.3