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/tuners/tda18218.c | 343 ++++++++++++++++++++++++++++++++++++++++ 1 file changed, 343 insertions(+) create mode 100644 drivers/media/tuners/tda18218.c (limited to 'drivers/media/tuners/tda18218.c') diff --git a/drivers/media/tuners/tda18218.c b/drivers/media/tuners/tda18218.c new file mode 100644 index 000000000..4ed946461 --- /dev/null +++ b/drivers/media/tuners/tda18218.c @@ -0,0 +1,343 @@ +// SPDX-License-Identifier: GPL-2.0-or-later +/* + * NXP TDA18218HN silicon tuner driver + * + * Copyright (C) 2010 Antti Palosaari + */ + +#include "tda18218_priv.h" + +/* Max transfer size done by I2C transfer functions */ +#define MAX_XFER_SIZE 64 + +/* write multiple registers */ +static int tda18218_wr_regs(struct tda18218_priv *priv, u8 reg, u8 *val, u8 len) +{ + int ret = 0, len2, remaining; + u8 buf[MAX_XFER_SIZE]; + struct i2c_msg msg[1] = { + { + .addr = priv->cfg->i2c_address, + .flags = 0, + .buf = buf, + } + }; + + if (1 + len > sizeof(buf)) { + dev_warn(&priv->i2c->dev, + "%s: i2c wr reg=%04x: len=%d is too big!\n", + KBUILD_MODNAME, reg, len); + return -EINVAL; + } + + for (remaining = len; remaining > 0; + remaining -= (priv->cfg->i2c_wr_max - 1)) { + len2 = remaining; + if (len2 > (priv->cfg->i2c_wr_max - 1)) + len2 = (priv->cfg->i2c_wr_max - 1); + + msg[0].len = 1 + len2; + buf[0] = reg + len - remaining; + memcpy(&buf[1], &val[len - remaining], len2); + + ret = i2c_transfer(priv->i2c, msg, 1); + if (ret != 1) + break; + } + + if (ret == 1) { + ret = 0; + } else { + dev_warn(&priv->i2c->dev, "%s: i2c wr failed=%d reg=%02x " \ + "len=%d\n", KBUILD_MODNAME, ret, reg, len); + ret = -EREMOTEIO; + } + + return ret; +} + +/* read multiple registers */ +static int tda18218_rd_regs(struct tda18218_priv *priv, u8 reg, u8 *val, u8 len) +{ + int ret; + u8 buf[MAX_XFER_SIZE]; /* we must start read always from reg 0x00 */ + struct i2c_msg msg[2] = { + { + .addr = priv->cfg->i2c_address, + .flags = 0, + .len = 1, + .buf = "\x00", + }, { + .addr = priv->cfg->i2c_address, + .flags = I2C_M_RD, + .len = reg + len, + .buf = buf, + } + }; + + if (reg + len > sizeof(buf)) { + dev_warn(&priv->i2c->dev, + "%s: i2c wr reg=%04x: len=%d is too big!\n", + KBUILD_MODNAME, reg, len); + return -EINVAL; + } + + ret = i2c_transfer(priv->i2c, msg, 2); + if (ret == 2) { + memcpy(val, &buf[reg], len); + ret = 0; + } else { + dev_warn(&priv->i2c->dev, "%s: i2c rd failed=%d reg=%02x " \ + "len=%d\n", KBUILD_MODNAME, ret, reg, len); + ret = -EREMOTEIO; + } + + return ret; +} + +/* write single register */ +static int tda18218_wr_reg(struct tda18218_priv *priv, u8 reg, u8 val) +{ + return tda18218_wr_regs(priv, reg, &val, 1); +} + +/* read single register */ + +static int tda18218_rd_reg(struct tda18218_priv *priv, u8 reg, u8 *val) +{ + return tda18218_rd_regs(priv, reg, val, 1); +} + +static int tda18218_set_params(struct dvb_frontend *fe) +{ + struct tda18218_priv *priv = fe->tuner_priv; + struct dtv_frontend_properties *c = &fe->dtv_property_cache; + u32 bw = c->bandwidth_hz; + int ret; + u8 buf[3], i, BP_Filter, LP_Fc; + u32 LO_Frac; + /* TODO: find out correct AGC algorithm */ + u8 agc[][2] = { + { R20_AGC11, 0x60 }, + { R23_AGC21, 0x02 }, + { R20_AGC11, 0xa0 }, + { R23_AGC21, 0x09 }, + { R20_AGC11, 0xe0 }, + { R23_AGC21, 0x0c }, + { R20_AGC11, 0x40 }, + { R23_AGC21, 0x01 }, + { R20_AGC11, 0x80 }, + { R23_AGC21, 0x08 }, + { R20_AGC11, 0xc0 }, + { R23_AGC21, 0x0b }, + { R24_AGC22, 0x1c }, + { R24_AGC22, 0x0c }, + }; + + if (fe->ops.i2c_gate_ctrl) + fe->ops.i2c_gate_ctrl(fe, 1); /* open I2C-gate */ + + /* low-pass filter cut-off frequency */ + if (bw <= 6000000) { + LP_Fc = 0; + priv->if_frequency = 3000000; + } else if (bw <= 7000000) { + LP_Fc = 1; + priv->if_frequency = 3500000; + } else { + LP_Fc = 2; + priv->if_frequency = 4000000; + } + + LO_Frac = c->frequency + priv->if_frequency; + + /* band-pass filter */ + if (LO_Frac < 188000000) + BP_Filter = 3; + else if (LO_Frac < 253000000) + BP_Filter = 4; + else if (LO_Frac < 343000000) + BP_Filter = 5; + else + BP_Filter = 6; + + buf[0] = (priv->regs[R1A_IF1] & ~7) | BP_Filter; /* BP_Filter */ + buf[1] = (priv->regs[R1B_IF2] & ~3) | LP_Fc; /* LP_Fc */ + buf[2] = priv->regs[R1C_AGC2B]; + ret = tda18218_wr_regs(priv, R1A_IF1, buf, 3); + if (ret) + goto error; + + buf[0] = (LO_Frac / 1000) >> 12; /* LO_Frac_0 */ + buf[1] = (LO_Frac / 1000) >> 4; /* LO_Frac_1 */ + buf[2] = (LO_Frac / 1000) << 4 | + (priv->regs[R0C_MD5] & 0x0f); /* LO_Frac_2 */ + ret = tda18218_wr_regs(priv, R0A_MD3, buf, 3); + if (ret) + goto error; + + buf[0] = priv->regs[R0F_MD8] | (1 << 6); /* Freq_prog_Start */ + ret = tda18218_wr_regs(priv, R0F_MD8, buf, 1); + if (ret) + goto error; + + buf[0] = priv->regs[R0F_MD8] & ~(1 << 6); /* Freq_prog_Start */ + ret = tda18218_wr_regs(priv, R0F_MD8, buf, 1); + if (ret) + goto error; + + /* trigger AGC */ + for (i = 0; i < ARRAY_SIZE(agc); i++) { + ret = tda18218_wr_reg(priv, agc[i][0], agc[i][1]); + if (ret) + goto error; + } + +error: + if (fe->ops.i2c_gate_ctrl) + fe->ops.i2c_gate_ctrl(fe, 0); /* close I2C-gate */ + + if (ret) + dev_dbg(&priv->i2c->dev, "%s: failed=%d\n", __func__, ret); + + return ret; +} + +static int tda18218_get_if_frequency(struct dvb_frontend *fe, u32 *frequency) +{ + struct tda18218_priv *priv = fe->tuner_priv; + *frequency = priv->if_frequency; + dev_dbg(&priv->i2c->dev, "%s: if_frequency=%d\n", __func__, *frequency); + return 0; +} + +static int tda18218_sleep(struct dvb_frontend *fe) +{ + struct tda18218_priv *priv = fe->tuner_priv; + int ret; + + if (fe->ops.i2c_gate_ctrl) + fe->ops.i2c_gate_ctrl(fe, 1); /* open I2C-gate */ + + /* standby */ + ret = tda18218_wr_reg(priv, R17_PD1, priv->regs[R17_PD1] | (1 << 0)); + + if (fe->ops.i2c_gate_ctrl) + fe->ops.i2c_gate_ctrl(fe, 0); /* close I2C-gate */ + + if (ret) + dev_dbg(&priv->i2c->dev, "%s: failed=%d\n", __func__, ret); + + return ret; +} + +static int tda18218_init(struct dvb_frontend *fe) +{ + struct tda18218_priv *priv = fe->tuner_priv; + int ret; + + /* TODO: calibrations */ + + if (fe->ops.i2c_gate_ctrl) + fe->ops.i2c_gate_ctrl(fe, 1); /* open I2C-gate */ + + ret = tda18218_wr_regs(priv, R00_ID, priv->regs, TDA18218_NUM_REGS); + + if (fe->ops.i2c_gate_ctrl) + fe->ops.i2c_gate_ctrl(fe, 0); /* close I2C-gate */ + + if (ret) + dev_dbg(&priv->i2c->dev, "%s: failed=%d\n", __func__, ret); + + return ret; +} + +static void tda18218_release(struct dvb_frontend *fe) +{ + kfree(fe->tuner_priv); + fe->tuner_priv = NULL; +} + +static const struct dvb_tuner_ops tda18218_tuner_ops = { + .info = { + .name = "NXP TDA18218", + + .frequency_min_hz = 174 * MHz, + .frequency_max_hz = 864 * MHz, + .frequency_step_hz = 1 * kHz, + }, + + .release = tda18218_release, + .init = tda18218_init, + .sleep = tda18218_sleep, + + .set_params = tda18218_set_params, + + .get_if_frequency = tda18218_get_if_frequency, +}; + +struct dvb_frontend *tda18218_attach(struct dvb_frontend *fe, + struct i2c_adapter *i2c, struct tda18218_config *cfg) +{ + struct tda18218_priv *priv = NULL; + u8 val; + int ret; + /* chip default registers values */ + static u8 def_regs[] = { + 0xc0, 0x88, 0x00, 0x8e, 0x03, 0x00, 0x00, 0xd0, 0x00, 0x40, + 0x00, 0x00, 0x07, 0xff, 0x84, 0x09, 0x00, 0x13, 0x00, 0x00, + 0x01, 0x84, 0x09, 0xf0, 0x19, 0x0a, 0x8e, 0x69, 0x98, 0x01, + 0x00, 0x58, 0x10, 0x40, 0x8c, 0x00, 0x0c, 0x48, 0x85, 0xc9, + 0xa7, 0x00, 0x00, 0x00, 0x30, 0x81, 0x80, 0x00, 0x39, 0x00, + 0x8a, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xf6, 0xf6 + }; + + priv = kzalloc(sizeof(struct tda18218_priv), GFP_KERNEL); + if (priv == NULL) + return NULL; + + priv->cfg = cfg; + priv->i2c = i2c; + fe->tuner_priv = priv; + + if (fe->ops.i2c_gate_ctrl) + fe->ops.i2c_gate_ctrl(fe, 1); /* open I2C-gate */ + + /* check if the tuner is there */ + ret = tda18218_rd_reg(priv, R00_ID, &val); + if (!ret) + dev_dbg(&priv->i2c->dev, "%s: chip id=%02x\n", __func__, val); + if (ret || val != def_regs[R00_ID]) { + kfree(priv); + return NULL; + } + + dev_info(&priv->i2c->dev, + "%s: NXP TDA18218HN successfully identified\n", + KBUILD_MODNAME); + + memcpy(&fe->ops.tuner_ops, &tda18218_tuner_ops, + sizeof(struct dvb_tuner_ops)); + memcpy(priv->regs, def_regs, sizeof(def_regs)); + + /* loop-through enabled chip default register values */ + if (priv->cfg->loop_through) { + priv->regs[R17_PD1] = 0xb0; + priv->regs[R18_PD2] = 0x59; + } + + /* standby */ + ret = tda18218_wr_reg(priv, R17_PD1, priv->regs[R17_PD1] | (1 << 0)); + if (ret) + dev_dbg(&priv->i2c->dev, "%s: failed=%d\n", __func__, ret); + + if (fe->ops.i2c_gate_ctrl) + fe->ops.i2c_gate_ctrl(fe, 0); /* close I2C-gate */ + + return fe; +} +EXPORT_SYMBOL(tda18218_attach); + +MODULE_DESCRIPTION("NXP TDA18218HN silicon tuner driver"); +MODULE_AUTHOR("Antti Palosaari "); +MODULE_LICENSE("GPL"); -- cgit v1.2.3