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/dvb-frontends/ec100.c | 331 ++++++++++++++++++++++++++++++++++++ 1 file changed, 331 insertions(+) create mode 100644 drivers/media/dvb-frontends/ec100.c (limited to 'drivers/media/dvb-frontends/ec100.c') diff --git a/drivers/media/dvb-frontends/ec100.c b/drivers/media/dvb-frontends/ec100.c new file mode 100644 index 000000000..03bd80666 --- /dev/null +++ b/drivers/media/dvb-frontends/ec100.c @@ -0,0 +1,331 @@ +// SPDX-License-Identifier: GPL-2.0-or-later +/* + * E3C EC100 demodulator driver + * + * Copyright (C) 2009 Antti Palosaari + */ + +#include +#include "ec100.h" + +struct ec100_state { + struct i2c_adapter *i2c; + struct dvb_frontend frontend; + struct ec100_config config; + + u16 ber; +}; + +/* write single register */ +static int ec100_write_reg(struct ec100_state *state, u8 reg, u8 val) +{ + int ret; + u8 buf[2] = {reg, val}; + struct i2c_msg msg[1] = { + { + .addr = state->config.demod_address, + .flags = 0, + .len = sizeof(buf), + .buf = buf, + } + }; + + ret = i2c_transfer(state->i2c, msg, 1); + if (ret == 1) { + ret = 0; + } else { + dev_warn(&state->i2c->dev, "%s: i2c wr failed=%d reg=%02x\n", + KBUILD_MODNAME, ret, reg); + ret = -EREMOTEIO; + } + + return ret; +} + +/* read single register */ +static int ec100_read_reg(struct ec100_state *state, u8 reg, u8 *val) +{ + int ret; + struct i2c_msg msg[2] = { + { + .addr = state->config.demod_address, + .flags = 0, + .len = 1, + .buf = ® + }, { + .addr = state->config.demod_address, + .flags = I2C_M_RD, + .len = 1, + .buf = val + } + }; + + ret = i2c_transfer(state->i2c, msg, 2); + if (ret == 2) { + ret = 0; + } else { + dev_warn(&state->i2c->dev, "%s: i2c rd failed=%d reg=%02x\n", + KBUILD_MODNAME, ret, reg); + ret = -EREMOTEIO; + } + + return ret; +} + +static int ec100_set_frontend(struct dvb_frontend *fe) +{ + struct dtv_frontend_properties *c = &fe->dtv_property_cache; + struct ec100_state *state = fe->demodulator_priv; + int ret; + u8 tmp, tmp2; + + dev_dbg(&state->i2c->dev, "%s: frequency=%d bandwidth_hz=%d\n", + __func__, c->frequency, c->bandwidth_hz); + + /* program tuner */ + if (fe->ops.tuner_ops.set_params) + fe->ops.tuner_ops.set_params(fe); + + ret = ec100_write_reg(state, 0x04, 0x06); + if (ret) + goto error; + ret = ec100_write_reg(state, 0x67, 0x58); + if (ret) + goto error; + ret = ec100_write_reg(state, 0x05, 0x18); + if (ret) + goto error; + + /* reg/bw | 6 | 7 | 8 + -------+------+------+------ + A 0x1b | 0xa1 | 0xe7 | 0x2c + A 0x1c | 0x55 | 0x63 | 0x72 + -------+------+------+------ + B 0x1b | 0xb7 | 0x00 | 0x49 + B 0x1c | 0x55 | 0x64 | 0x72 */ + + switch (c->bandwidth_hz) { + case 6000000: + tmp = 0xb7; + tmp2 = 0x55; + break; + case 7000000: + tmp = 0x00; + tmp2 = 0x64; + break; + case 8000000: + default: + tmp = 0x49; + tmp2 = 0x72; + } + + ret = ec100_write_reg(state, 0x1b, tmp); + if (ret) + goto error; + ret = ec100_write_reg(state, 0x1c, tmp2); + if (ret) + goto error; + + ret = ec100_write_reg(state, 0x0c, 0xbb); /* if freq */ + if (ret) + goto error; + ret = ec100_write_reg(state, 0x0d, 0x31); /* if freq */ + if (ret) + goto error; + + ret = ec100_write_reg(state, 0x08, 0x24); + if (ret) + goto error; + + ret = ec100_write_reg(state, 0x00, 0x00); /* go */ + if (ret) + goto error; + ret = ec100_write_reg(state, 0x00, 0x20); /* go */ + if (ret) + goto error; + + return ret; +error: + dev_dbg(&state->i2c->dev, "%s: failed=%d\n", __func__, ret); + return ret; +} + +static int ec100_get_tune_settings(struct dvb_frontend *fe, + struct dvb_frontend_tune_settings *fesettings) +{ + fesettings->min_delay_ms = 300; + fesettings->step_size = 0; + fesettings->max_drift = 0; + + return 0; +} + +static int ec100_read_status(struct dvb_frontend *fe, enum fe_status *status) +{ + struct ec100_state *state = fe->demodulator_priv; + int ret; + u8 tmp; + *status = 0; + + ret = ec100_read_reg(state, 0x42, &tmp); + if (ret) + goto error; + + if (tmp & 0x80) { + /* bit7 set - have lock */ + *status |= FE_HAS_SIGNAL | FE_HAS_CARRIER | FE_HAS_VITERBI | + FE_HAS_SYNC | FE_HAS_LOCK; + } else { + ret = ec100_read_reg(state, 0x01, &tmp); + if (ret) + goto error; + + if (tmp & 0x10) { + /* bit4 set - have signal */ + *status |= FE_HAS_SIGNAL; + if (!(tmp & 0x01)) { + /* bit0 clear - have ~valid signal */ + *status |= FE_HAS_CARRIER | FE_HAS_VITERBI; + } + } + } + + return ret; +error: + dev_dbg(&state->i2c->dev, "%s: failed=%d\n", __func__, ret); + return ret; +} + +static int ec100_read_ber(struct dvb_frontend *fe, u32 *ber) +{ + struct ec100_state *state = fe->demodulator_priv; + int ret; + u8 tmp, tmp2; + u16 ber2; + + *ber = 0; + + ret = ec100_read_reg(state, 0x65, &tmp); + if (ret) + goto error; + ret = ec100_read_reg(state, 0x66, &tmp2); + if (ret) + goto error; + + ber2 = (tmp2 << 8) | tmp; + + /* if counter overflow or clear */ + if (ber2 < state->ber) + *ber = ber2; + else + *ber = ber2 - state->ber; + + state->ber = ber2; + + return ret; +error: + dev_dbg(&state->i2c->dev, "%s: failed=%d\n", __func__, ret); + return ret; +} + +static int ec100_read_signal_strength(struct dvb_frontend *fe, u16 *strength) +{ + struct ec100_state *state = fe->demodulator_priv; + int ret; + u8 tmp; + + ret = ec100_read_reg(state, 0x24, &tmp); + if (ret) { + *strength = 0; + goto error; + } + + *strength = ((tmp << 8) | tmp); + + return ret; +error: + dev_dbg(&state->i2c->dev, "%s: failed=%d\n", __func__, ret); + return ret; +} + +static int ec100_read_snr(struct dvb_frontend *fe, u16 *snr) +{ + *snr = 0; + return 0; +} + +static int ec100_read_ucblocks(struct dvb_frontend *fe, u32 *ucblocks) +{ + *ucblocks = 0; + return 0; +} + +static void ec100_release(struct dvb_frontend *fe) +{ + struct ec100_state *state = fe->demodulator_priv; + kfree(state); +} + +static const struct dvb_frontend_ops ec100_ops; + +struct dvb_frontend *ec100_attach(const struct ec100_config *config, + struct i2c_adapter *i2c) +{ + int ret; + struct ec100_state *state = NULL; + u8 tmp; + + /* allocate memory for the internal state */ + state = kzalloc(sizeof(struct ec100_state), GFP_KERNEL); + if (state == NULL) + goto error; + + /* setup the state */ + state->i2c = i2c; + memcpy(&state->config, config, sizeof(struct ec100_config)); + + /* check if the demod is there */ + ret = ec100_read_reg(state, 0x33, &tmp); + if (ret || tmp != 0x0b) + goto error; + + /* create dvb_frontend */ + memcpy(&state->frontend.ops, &ec100_ops, + sizeof(struct dvb_frontend_ops)); + state->frontend.demodulator_priv = state; + + return &state->frontend; +error: + kfree(state); + return NULL; +} +EXPORT_SYMBOL(ec100_attach); + +static const struct dvb_frontend_ops ec100_ops = { + .delsys = { SYS_DVBT }, + .info = { + .name = "E3C EC100 DVB-T", + .caps = + FE_CAN_FEC_1_2 | FE_CAN_FEC_2_3 | FE_CAN_FEC_3_4 | + FE_CAN_FEC_5_6 | FE_CAN_FEC_7_8 | FE_CAN_FEC_AUTO | + FE_CAN_QPSK | FE_CAN_QAM_16 | + FE_CAN_QAM_64 | FE_CAN_QAM_AUTO | + FE_CAN_TRANSMISSION_MODE_AUTO | + FE_CAN_GUARD_INTERVAL_AUTO | + FE_CAN_HIERARCHY_AUTO | + FE_CAN_MUTE_TS + }, + + .release = ec100_release, + .set_frontend = ec100_set_frontend, + .get_tune_settings = ec100_get_tune_settings, + .read_status = ec100_read_status, + .read_ber = ec100_read_ber, + .read_signal_strength = ec100_read_signal_strength, + .read_snr = ec100_read_snr, + .read_ucblocks = ec100_read_ucblocks, +}; + +MODULE_AUTHOR("Antti Palosaari "); +MODULE_DESCRIPTION("E3C EC100 DVB-T demodulator driver"); +MODULE_LICENSE("GPL"); -- cgit v1.2.3