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/max2165.c | 417 +++++++++++++++++++++++++++++++++++++++++ 1 file changed, 417 insertions(+) create mode 100644 drivers/media/tuners/max2165.c (limited to 'drivers/media/tuners/max2165.c') diff --git a/drivers/media/tuners/max2165.c b/drivers/media/tuners/max2165.c new file mode 100644 index 000000000..1c746bed5 --- /dev/null +++ b/drivers/media/tuners/max2165.c @@ -0,0 +1,417 @@ +// SPDX-License-Identifier: GPL-2.0-or-later +/* + * Driver for Maxim MAX2165 silicon tuner + * + * Copyright (c) 2009 David T. L. Wong + */ + +#include +#include +#include +#include +#include +#include +#include + +#include + +#include "max2165.h" +#include "max2165_priv.h" +#include "tuner-i2c.h" + +#define dprintk(args...) \ + do { \ + if (debug) \ + printk(KERN_DEBUG "max2165: " args); \ + } while (0) + +static int debug; +module_param(debug, int, 0644); +MODULE_PARM_DESC(debug, "Turn on/off debugging (default:off)."); + +static int max2165_write_reg(struct max2165_priv *priv, u8 reg, u8 data) +{ + int ret; + u8 buf[] = { reg, data }; + struct i2c_msg msg = { .flags = 0, .buf = buf, .len = 2 }; + + msg.addr = priv->config->i2c_address; + + if (debug >= 2) + dprintk("%s: reg=0x%02X, data=0x%02X\n", __func__, reg, data); + + ret = i2c_transfer(priv->i2c, &msg, 1); + + if (ret != 1) + dprintk("%s: error reg=0x%x, data=0x%x, ret=%i\n", + __func__, reg, data, ret); + + return (ret != 1) ? -EIO : 0; +} + +static int max2165_read_reg(struct max2165_priv *priv, u8 reg, u8 *p_data) +{ + int ret; + u8 dev_addr = priv->config->i2c_address; + + u8 b0[] = { reg }; + u8 b1[] = { 0 }; + struct i2c_msg msg[] = { + { .addr = dev_addr, .flags = 0, .buf = b0, .len = 1 }, + { .addr = dev_addr, .flags = I2C_M_RD, .buf = b1, .len = 1 }, + }; + + ret = i2c_transfer(priv->i2c, msg, 2); + if (ret != 2) { + dprintk("%s: error reg=0x%x, ret=%i\n", __func__, reg, ret); + return -EIO; + } + + *p_data = b1[0]; + if (debug >= 2) + dprintk("%s: reg=0x%02X, data=0x%02X\n", + __func__, reg, b1[0]); + return 0; +} + +static int max2165_mask_write_reg(struct max2165_priv *priv, u8 reg, + u8 mask, u8 data) +{ + int ret; + u8 v; + + data &= mask; + ret = max2165_read_reg(priv, reg, &v); + if (ret != 0) + return ret; + v &= ~mask; + v |= data; + ret = max2165_write_reg(priv, reg, v); + + return ret; +} + +static int max2165_read_rom_table(struct max2165_priv *priv) +{ + u8 dat[3]; + int i; + + for (i = 0; i < 3; i++) { + max2165_write_reg(priv, REG_ROM_TABLE_ADDR, i + 1); + max2165_read_reg(priv, REG_ROM_TABLE_DATA, &dat[i]); + } + + priv->tf_ntch_low_cfg = dat[0] >> 4; + priv->tf_ntch_hi_cfg = dat[0] & 0x0F; + priv->tf_balun_low_ref = dat[1] & 0x0F; + priv->tf_balun_hi_ref = dat[1] >> 4; + priv->bb_filter_7mhz_cfg = dat[2] & 0x0F; + priv->bb_filter_8mhz_cfg = dat[2] >> 4; + + dprintk("tf_ntch_low_cfg = 0x%X\n", priv->tf_ntch_low_cfg); + dprintk("tf_ntch_hi_cfg = 0x%X\n", priv->tf_ntch_hi_cfg); + dprintk("tf_balun_low_ref = 0x%X\n", priv->tf_balun_low_ref); + dprintk("tf_balun_hi_ref = 0x%X\n", priv->tf_balun_hi_ref); + dprintk("bb_filter_7mhz_cfg = 0x%X\n", priv->bb_filter_7mhz_cfg); + dprintk("bb_filter_8mhz_cfg = 0x%X\n", priv->bb_filter_8mhz_cfg); + + return 0; +} + +static int max2165_set_osc(struct max2165_priv *priv, u8 osc /*MHz*/) +{ + u8 v; + + v = (osc / 2); + if (v == 2) + v = 0x7; + else + v -= 8; + + max2165_mask_write_reg(priv, REG_PLL_CFG, 0x07, v); + + return 0; +} + +static int max2165_set_bandwidth(struct max2165_priv *priv, u32 bw) +{ + u8 val; + + if (bw == 8000000) + val = priv->bb_filter_8mhz_cfg; + else + val = priv->bb_filter_7mhz_cfg; + + max2165_mask_write_reg(priv, REG_BASEBAND_CTRL, 0xF0, val << 4); + + return 0; +} + +static int fixpt_div32(u32 dividend, u32 divisor, u32 *quotient, u32 *fraction) +{ + u32 remainder; + u32 q, f = 0; + int i; + + if (0 == divisor) + return -EINVAL; + + q = dividend / divisor; + remainder = dividend - q * divisor; + + for (i = 0; i < 31; i++) { + remainder <<= 1; + if (remainder >= divisor) { + f += 1; + remainder -= divisor; + } + f <<= 1; + } + + *quotient = q; + *fraction = f; + + return 0; +} + +static int max2165_set_rf(struct max2165_priv *priv, u32 freq) +{ + u8 tf; + u8 tf_ntch; + u32 t; + u32 quotient, fraction; + int ret; + + /* Set PLL divider according to RF frequency */ + ret = fixpt_div32(freq / 1000, priv->config->osc_clk * 1000, + "ient, &fraction); + if (ret != 0) + return ret; + + /* 20-bit fraction */ + fraction >>= 12; + + max2165_write_reg(priv, REG_NDIV_INT, quotient); + max2165_mask_write_reg(priv, REG_NDIV_FRAC2, 0x0F, fraction >> 16); + max2165_write_reg(priv, REG_NDIV_FRAC1, fraction >> 8); + max2165_write_reg(priv, REG_NDIV_FRAC0, fraction); + + /* Norch Filter */ + tf_ntch = (freq < 725000000) ? + priv->tf_ntch_low_cfg : priv->tf_ntch_hi_cfg; + + /* Tracking filter balun */ + t = priv->tf_balun_low_ref; + t += (priv->tf_balun_hi_ref - priv->tf_balun_low_ref) + * (freq / 1000 - 470000) / (780000 - 470000); + + tf = t; + dprintk("tf = %X\n", tf); + tf |= tf_ntch << 4; + + max2165_write_reg(priv, REG_TRACK_FILTER, tf); + + return 0; +} + +static void max2165_debug_status(struct max2165_priv *priv) +{ + u8 status, autotune; + u8 auto_vco_success, auto_vco_active; + u8 pll_locked; + u8 dc_offset_low, dc_offset_hi; + u8 signal_lv_over_threshold; + u8 vco, vco_sub_band, adc; + + max2165_read_reg(priv, REG_STATUS, &status); + max2165_read_reg(priv, REG_AUTOTUNE, &autotune); + + auto_vco_success = (status >> 6) & 0x01; + auto_vco_active = (status >> 5) & 0x01; + pll_locked = (status >> 4) & 0x01; + dc_offset_low = (status >> 3) & 0x01; + dc_offset_hi = (status >> 2) & 0x01; + signal_lv_over_threshold = status & 0x01; + + vco = autotune >> 6; + vco_sub_band = (autotune >> 3) & 0x7; + adc = autotune & 0x7; + + dprintk("auto VCO active: %d, auto VCO success: %d\n", + auto_vco_active, auto_vco_success); + dprintk("PLL locked: %d\n", pll_locked); + dprintk("DC offset low: %d, DC offset high: %d\n", + dc_offset_low, dc_offset_hi); + dprintk("Signal lvl over threshold: %d\n", signal_lv_over_threshold); + dprintk("VCO: %d, VCO Sub-band: %d, ADC: %d\n", vco, vco_sub_band, adc); +} + +static int max2165_set_params(struct dvb_frontend *fe) +{ + struct max2165_priv *priv = fe->tuner_priv; + struct dtv_frontend_properties *c = &fe->dtv_property_cache; + int ret; + + switch (c->bandwidth_hz) { + case 7000000: + case 8000000: + priv->frequency = c->frequency; + break; + default: + printk(KERN_INFO "MAX2165: bandwidth %d Hz not supported.\n", + c->bandwidth_hz); + return -EINVAL; + } + + dprintk("%s() frequency=%d\n", __func__, c->frequency); + + if (fe->ops.i2c_gate_ctrl) + fe->ops.i2c_gate_ctrl(fe, 1); + max2165_set_bandwidth(priv, c->bandwidth_hz); + ret = max2165_set_rf(priv, priv->frequency); + mdelay(50); + max2165_debug_status(priv); + if (fe->ops.i2c_gate_ctrl) + fe->ops.i2c_gate_ctrl(fe, 0); + + if (ret != 0) + return -EREMOTEIO; + + return 0; +} + +static int max2165_get_frequency(struct dvb_frontend *fe, u32 *freq) +{ + struct max2165_priv *priv = fe->tuner_priv; + dprintk("%s()\n", __func__); + *freq = priv->frequency; + return 0; +} + +static int max2165_get_bandwidth(struct dvb_frontend *fe, u32 *bw) +{ + struct max2165_priv *priv = fe->tuner_priv; + dprintk("%s()\n", __func__); + + *bw = priv->bandwidth; + return 0; +} + +static int max2165_get_status(struct dvb_frontend *fe, u32 *status) +{ + struct max2165_priv *priv = fe->tuner_priv; + u16 lock_status = 0; + + dprintk("%s()\n", __func__); + + if (fe->ops.i2c_gate_ctrl) + fe->ops.i2c_gate_ctrl(fe, 1); + + max2165_debug_status(priv); + *status = lock_status; + + if (fe->ops.i2c_gate_ctrl) + fe->ops.i2c_gate_ctrl(fe, 0); + + return 0; +} + +static int max2165_sleep(struct dvb_frontend *fe) +{ + dprintk("%s()\n", __func__); + return 0; +} + +static int max2165_init(struct dvb_frontend *fe) +{ + struct max2165_priv *priv = fe->tuner_priv; + dprintk("%s()\n", __func__); + + if (fe->ops.i2c_gate_ctrl) + fe->ops.i2c_gate_ctrl(fe, 1); + + /* Setup initial values */ + /* Fractional Mode on */ + max2165_write_reg(priv, REG_NDIV_FRAC2, 0x18); + /* LNA on */ + max2165_write_reg(priv, REG_LNA, 0x01); + max2165_write_reg(priv, REG_PLL_CFG, 0x7A); + max2165_write_reg(priv, REG_TEST, 0x08); + max2165_write_reg(priv, REG_SHUTDOWN, 0x40); + max2165_write_reg(priv, REG_VCO_CTRL, 0x84); + max2165_write_reg(priv, REG_BASEBAND_CTRL, 0xC3); + max2165_write_reg(priv, REG_DC_OFFSET_CTRL, 0x75); + max2165_write_reg(priv, REG_DC_OFFSET_DAC, 0x00); + max2165_write_reg(priv, REG_ROM_TABLE_ADDR, 0x00); + + max2165_set_osc(priv, priv->config->osc_clk); + + max2165_read_rom_table(priv); + + max2165_set_bandwidth(priv, 8000000); + + if (fe->ops.i2c_gate_ctrl) + fe->ops.i2c_gate_ctrl(fe, 0); + + return 0; +} + +static void max2165_release(struct dvb_frontend *fe) +{ + struct max2165_priv *priv = fe->tuner_priv; + dprintk("%s()\n", __func__); + + kfree(priv); + fe->tuner_priv = NULL; +} + +static const struct dvb_tuner_ops max2165_tuner_ops = { + .info = { + .name = "Maxim MAX2165", + .frequency_min_hz = 470 * MHz, + .frequency_max_hz = 862 * MHz, + .frequency_step_hz = 50 * kHz, + }, + + .release = max2165_release, + .init = max2165_init, + .sleep = max2165_sleep, + + .set_params = max2165_set_params, + .set_analog_params = NULL, + .get_frequency = max2165_get_frequency, + .get_bandwidth = max2165_get_bandwidth, + .get_status = max2165_get_status +}; + +struct dvb_frontend *max2165_attach(struct dvb_frontend *fe, + struct i2c_adapter *i2c, + struct max2165_config *cfg) +{ + struct max2165_priv *priv = NULL; + + dprintk("%s(%d-%04x)\n", __func__, + i2c ? i2c_adapter_id(i2c) : -1, + cfg ? cfg->i2c_address : -1); + + priv = kzalloc(sizeof(struct max2165_priv), GFP_KERNEL); + if (priv == NULL) + return NULL; + + memcpy(&fe->ops.tuner_ops, &max2165_tuner_ops, + sizeof(struct dvb_tuner_ops)); + + priv->config = cfg; + priv->i2c = i2c; + fe->tuner_priv = priv; + + max2165_init(fe); + max2165_debug_status(priv); + + return fe; +} +EXPORT_SYMBOL(max2165_attach); + +MODULE_AUTHOR("David T. L. Wong "); +MODULE_DESCRIPTION("Maxim MAX2165 silicon tuner driver"); +MODULE_LICENSE("GPL"); -- cgit v1.2.3