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/i2c/tw2804.c | 435 +++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 435 insertions(+) create mode 100644 drivers/media/i2c/tw2804.c (limited to 'drivers/media/i2c/tw2804.c') diff --git a/drivers/media/i2c/tw2804.c b/drivers/media/i2c/tw2804.c new file mode 100644 index 000000000..710790ece --- /dev/null +++ b/drivers/media/i2c/tw2804.c @@ -0,0 +1,435 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * Copyright (C) 2005-2006 Micronas USA Inc. + */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#define TW2804_REG_AUTOGAIN 0x02 +#define TW2804_REG_HUE 0x0f +#define TW2804_REG_SATURATION 0x10 +#define TW2804_REG_CONTRAST 0x11 +#define TW2804_REG_BRIGHTNESS 0x12 +#define TW2804_REG_COLOR_KILLER 0x14 +#define TW2804_REG_GAIN 0x3c +#define TW2804_REG_CHROMA_GAIN 0x3d +#define TW2804_REG_BLUE_BALANCE 0x3e +#define TW2804_REG_RED_BALANCE 0x3f + +struct tw2804 { + struct v4l2_subdev sd; + struct v4l2_ctrl_handler hdl; + u8 channel:2; + u8 input:1; + int norm; +}; + +static const u8 global_registers[] = { + 0x39, 0x00, + 0x3a, 0xff, + 0x3b, 0x84, + 0x3c, 0x80, + 0x3d, 0x80, + 0x3e, 0x82, + 0x3f, 0x82, + 0x78, 0x00, + 0xff, 0xff, /* Terminator (reg 0xff does not exist) */ +}; + +static const u8 channel_registers[] = { + 0x01, 0xc4, + 0x02, 0xa5, + 0x03, 0x20, + 0x04, 0xd0, + 0x05, 0x20, + 0x06, 0xd0, + 0x07, 0x88, + 0x08, 0x20, + 0x09, 0x07, + 0x0a, 0xf0, + 0x0b, 0x07, + 0x0c, 0xf0, + 0x0d, 0x40, + 0x0e, 0xd2, + 0x0f, 0x80, + 0x10, 0x80, + 0x11, 0x80, + 0x12, 0x80, + 0x13, 0x1f, + 0x14, 0x00, + 0x15, 0x00, + 0x16, 0x00, + 0x17, 0x00, + 0x18, 0xff, + 0x19, 0xff, + 0x1a, 0xff, + 0x1b, 0xff, + 0x1c, 0xff, + 0x1d, 0xff, + 0x1e, 0xff, + 0x1f, 0xff, + 0x20, 0x07, + 0x21, 0x07, + 0x22, 0x00, + 0x23, 0x91, + 0x24, 0x51, + 0x25, 0x03, + 0x26, 0x00, + 0x27, 0x00, + 0x28, 0x00, + 0x29, 0x00, + 0x2a, 0x00, + 0x2b, 0x00, + 0x2c, 0x00, + 0x2d, 0x00, + 0x2e, 0x00, + 0x2f, 0x00, + 0x30, 0x00, + 0x31, 0x00, + 0x32, 0x00, + 0x33, 0x00, + 0x34, 0x00, + 0x35, 0x00, + 0x36, 0x00, + 0x37, 0x00, + 0xff, 0xff, /* Terminator (reg 0xff does not exist) */ +}; + +static int write_reg(struct i2c_client *client, u8 reg, u8 value, u8 channel) +{ + return i2c_smbus_write_byte_data(client, reg | (channel << 6), value); +} + +static int write_regs(struct i2c_client *client, const u8 *regs, u8 channel) +{ + int ret; + int i; + + for (i = 0; regs[i] != 0xff; i += 2) { + ret = i2c_smbus_write_byte_data(client, + regs[i] | (channel << 6), regs[i + 1]); + if (ret < 0) + return ret; + } + return 0; +} + +static int read_reg(struct i2c_client *client, u8 reg, u8 channel) +{ + return i2c_smbus_read_byte_data(client, (reg) | (channel << 6)); +} + +static inline struct tw2804 *to_state(struct v4l2_subdev *sd) +{ + return container_of(sd, struct tw2804, sd); +} + +static inline struct tw2804 *to_state_from_ctrl(struct v4l2_ctrl *ctrl) +{ + return container_of(ctrl->handler, struct tw2804, hdl); +} + +static int tw2804_log_status(struct v4l2_subdev *sd) +{ + struct tw2804 *state = to_state(sd); + + v4l2_info(sd, "Standard: %s\n", + state->norm & V4L2_STD_525_60 ? "60 Hz" : "50 Hz"); + v4l2_info(sd, "Channel: %d\n", state->channel); + v4l2_info(sd, "Input: %d\n", state->input); + return v4l2_ctrl_subdev_log_status(sd); +} + +/* + * These volatile controls are needed because all four channels share + * these controls. So a change made to them through one channel would + * require another channel to be updated. + * + * Normally this would have been done in a different way, but since the one + * board that uses this driver sees this single chip as if it was on four + * different i2c adapters (each adapter belonging to a separate instance of + * the same USB driver) there is no reliable method that I have found to let + * the instances know about each other. + * + * So implementing these global registers as volatile is the best we can do. + */ +static int tw2804_g_volatile_ctrl(struct v4l2_ctrl *ctrl) +{ + struct tw2804 *state = to_state_from_ctrl(ctrl); + struct i2c_client *client = v4l2_get_subdevdata(&state->sd); + + switch (ctrl->id) { + case V4L2_CID_GAIN: + ctrl->val = read_reg(client, TW2804_REG_GAIN, 0); + return 0; + + case V4L2_CID_CHROMA_GAIN: + ctrl->val = read_reg(client, TW2804_REG_CHROMA_GAIN, 0); + return 0; + + case V4L2_CID_BLUE_BALANCE: + ctrl->val = read_reg(client, TW2804_REG_BLUE_BALANCE, 0); + return 0; + + case V4L2_CID_RED_BALANCE: + ctrl->val = read_reg(client, TW2804_REG_RED_BALANCE, 0); + return 0; + } + return 0; +} + +static int tw2804_s_ctrl(struct v4l2_ctrl *ctrl) +{ + struct tw2804 *state = to_state_from_ctrl(ctrl); + struct i2c_client *client = v4l2_get_subdevdata(&state->sd); + int addr; + int reg; + + switch (ctrl->id) { + case V4L2_CID_AUTOGAIN: + addr = TW2804_REG_AUTOGAIN; + reg = read_reg(client, addr, state->channel); + if (reg < 0) + return reg; + if (ctrl->val == 0) + reg &= ~(1 << 7); + else + reg |= 1 << 7; + return write_reg(client, addr, reg, state->channel); + + case V4L2_CID_COLOR_KILLER: + addr = TW2804_REG_COLOR_KILLER; + reg = read_reg(client, addr, state->channel); + if (reg < 0) + return reg; + reg = (reg & ~(0x03)) | (ctrl->val == 0 ? 0x02 : 0x03); + return write_reg(client, addr, reg, state->channel); + + case V4L2_CID_GAIN: + return write_reg(client, TW2804_REG_GAIN, ctrl->val, 0); + + case V4L2_CID_CHROMA_GAIN: + return write_reg(client, TW2804_REG_CHROMA_GAIN, ctrl->val, 0); + + case V4L2_CID_BLUE_BALANCE: + return write_reg(client, TW2804_REG_BLUE_BALANCE, ctrl->val, 0); + + case V4L2_CID_RED_BALANCE: + return write_reg(client, TW2804_REG_RED_BALANCE, ctrl->val, 0); + + case V4L2_CID_BRIGHTNESS: + return write_reg(client, TW2804_REG_BRIGHTNESS, + ctrl->val, state->channel); + + case V4L2_CID_CONTRAST: + return write_reg(client, TW2804_REG_CONTRAST, + ctrl->val, state->channel); + + case V4L2_CID_SATURATION: + return write_reg(client, TW2804_REG_SATURATION, + ctrl->val, state->channel); + + case V4L2_CID_HUE: + return write_reg(client, TW2804_REG_HUE, + ctrl->val, state->channel); + + default: + break; + } + return -EINVAL; +} + +static int tw2804_s_std(struct v4l2_subdev *sd, v4l2_std_id norm) +{ + struct tw2804 *dec = to_state(sd); + struct i2c_client *client = v4l2_get_subdevdata(sd); + bool is_60hz = norm & V4L2_STD_525_60; + u8 regs[] = { + 0x01, is_60hz ? 0xc4 : 0x84, + 0x09, is_60hz ? 0x07 : 0x04, + 0x0a, is_60hz ? 0xf0 : 0x20, + 0x0b, is_60hz ? 0x07 : 0x04, + 0x0c, is_60hz ? 0xf0 : 0x20, + 0x0d, is_60hz ? 0x40 : 0x4a, + 0x16, is_60hz ? 0x00 : 0x40, + 0x17, is_60hz ? 0x00 : 0x40, + 0x20, is_60hz ? 0x07 : 0x0f, + 0x21, is_60hz ? 0x07 : 0x0f, + 0xff, 0xff, + }; + + write_regs(client, regs, dec->channel); + dec->norm = norm; + return 0; +} + +static int tw2804_s_video_routing(struct v4l2_subdev *sd, u32 input, u32 output, + u32 config) +{ + struct tw2804 *dec = to_state(sd); + struct i2c_client *client = v4l2_get_subdevdata(sd); + int reg; + + if (config && config - 1 != dec->channel) { + if (config > 4) { + dev_err(&client->dev, + "channel %d is not between 1 and 4!\n", config); + return -EINVAL; + } + dec->channel = config - 1; + dev_dbg(&client->dev, "initializing TW2804 channel %d\n", + dec->channel); + if (dec->channel == 0 && + write_regs(client, global_registers, 0) < 0) { + dev_err(&client->dev, + "error initializing TW2804 global registers\n"); + return -EIO; + } + if (write_regs(client, channel_registers, dec->channel) < 0) { + dev_err(&client->dev, + "error initializing TW2804 channel %d\n", + dec->channel); + return -EIO; + } + } + + if (input > 1) + return -EINVAL; + + if (input == dec->input) + return 0; + + reg = read_reg(client, 0x22, dec->channel); + + if (reg >= 0) { + if (input == 0) + reg &= ~(1 << 2); + else + reg |= 1 << 2; + reg = write_reg(client, 0x22, reg, dec->channel); + } + + if (reg >= 0) + dec->input = input; + else + return reg; + return 0; +} + +static const struct v4l2_ctrl_ops tw2804_ctrl_ops = { + .g_volatile_ctrl = tw2804_g_volatile_ctrl, + .s_ctrl = tw2804_s_ctrl, +}; + +static const struct v4l2_subdev_video_ops tw2804_video_ops = { + .s_std = tw2804_s_std, + .s_routing = tw2804_s_video_routing, +}; + +static const struct v4l2_subdev_core_ops tw2804_core_ops = { + .log_status = tw2804_log_status, +}; + +static const struct v4l2_subdev_ops tw2804_ops = { + .core = &tw2804_core_ops, + .video = &tw2804_video_ops, +}; + +static int tw2804_probe(struct i2c_client *client) +{ + struct i2c_adapter *adapter = client->adapter; + struct tw2804 *state; + struct v4l2_subdev *sd; + struct v4l2_ctrl *ctrl; + int err; + + if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA)) + return -ENODEV; + + state = devm_kzalloc(&client->dev, sizeof(*state), GFP_KERNEL); + if (state == NULL) + return -ENOMEM; + sd = &state->sd; + v4l2_i2c_subdev_init(sd, client, &tw2804_ops); + state->channel = -1; + state->norm = V4L2_STD_NTSC; + + v4l2_ctrl_handler_init(&state->hdl, 10); + v4l2_ctrl_new_std(&state->hdl, &tw2804_ctrl_ops, + V4L2_CID_BRIGHTNESS, 0, 255, 1, 128); + v4l2_ctrl_new_std(&state->hdl, &tw2804_ctrl_ops, + V4L2_CID_CONTRAST, 0, 255, 1, 128); + v4l2_ctrl_new_std(&state->hdl, &tw2804_ctrl_ops, + V4L2_CID_SATURATION, 0, 255, 1, 128); + v4l2_ctrl_new_std(&state->hdl, &tw2804_ctrl_ops, + V4L2_CID_HUE, 0, 255, 1, 128); + v4l2_ctrl_new_std(&state->hdl, &tw2804_ctrl_ops, + V4L2_CID_COLOR_KILLER, 0, 1, 1, 0); + v4l2_ctrl_new_std(&state->hdl, &tw2804_ctrl_ops, + V4L2_CID_AUTOGAIN, 0, 1, 1, 0); + ctrl = v4l2_ctrl_new_std(&state->hdl, &tw2804_ctrl_ops, + V4L2_CID_GAIN, 0, 255, 1, 128); + if (ctrl) + ctrl->flags |= V4L2_CTRL_FLAG_VOLATILE; + ctrl = v4l2_ctrl_new_std(&state->hdl, &tw2804_ctrl_ops, + V4L2_CID_CHROMA_GAIN, 0, 255, 1, 128); + if (ctrl) + ctrl->flags |= V4L2_CTRL_FLAG_VOLATILE; + ctrl = v4l2_ctrl_new_std(&state->hdl, &tw2804_ctrl_ops, + V4L2_CID_BLUE_BALANCE, 0, 255, 1, 122); + if (ctrl) + ctrl->flags |= V4L2_CTRL_FLAG_VOLATILE; + ctrl = v4l2_ctrl_new_std(&state->hdl, &tw2804_ctrl_ops, + V4L2_CID_RED_BALANCE, 0, 255, 1, 122); + if (ctrl) + ctrl->flags |= V4L2_CTRL_FLAG_VOLATILE; + sd->ctrl_handler = &state->hdl; + err = state->hdl.error; + if (err) { + v4l2_ctrl_handler_free(&state->hdl); + return err; + } + + v4l_info(client, "chip found @ 0x%02x (%s)\n", + client->addr << 1, client->adapter->name); + + return 0; +} + +static void tw2804_remove(struct i2c_client *client) +{ + struct v4l2_subdev *sd = i2c_get_clientdata(client); + struct tw2804 *state = to_state(sd); + + v4l2_device_unregister_subdev(sd); + v4l2_ctrl_handler_free(&state->hdl); +} + +static const struct i2c_device_id tw2804_id[] = { + { "tw2804", 0 }, + { } +}; +MODULE_DEVICE_TABLE(i2c, tw2804_id); + +static struct i2c_driver tw2804_driver = { + .driver = { + .name = "tw2804", + }, + .probe_new = tw2804_probe, + .remove = tw2804_remove, + .id_table = tw2804_id, +}; + +module_i2c_driver(tw2804_driver); + +MODULE_LICENSE("GPL v2"); +MODULE_DESCRIPTION("TW2804/TW2802 V4L2 i2c driver"); +MODULE_AUTHOR("Micronas USA Inc"); -- cgit v1.2.3