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/a8293.c | 278 ++++++++++++++++++++++++++++++++++++ 1 file changed, 278 insertions(+) create mode 100644 drivers/media/dvb-frontends/a8293.c (limited to 'drivers/media/dvb-frontends/a8293.c') diff --git a/drivers/media/dvb-frontends/a8293.c b/drivers/media/dvb-frontends/a8293.c new file mode 100644 index 000000000..cca7cbdd4 --- /dev/null +++ b/drivers/media/dvb-frontends/a8293.c @@ -0,0 +1,278 @@ +// SPDX-License-Identifier: GPL-2.0-or-later +/* + * Allegro A8293 SEC driver + * + * Copyright (C) 2011 Antti Palosaari + */ + +#include "a8293.h" + +#define A8293_FLAG_ODT 0x10 + +struct a8293_dev { + struct i2c_client *client; + u8 reg[2]; + int volt_slew_nanos_per_mv; +}; + +/* + * When increasing voltage, do so in minimal steps over time, minimizing + * risk of vIN undervoltage. + */ + +static int a8293_set_voltage_slew(struct a8293_dev *dev, + struct i2c_client *client, + enum fe_sec_voltage fe_sec_voltage, + int min_nanos_per_mv) +{ + int ret; + u8 reg0, reg1; + int new_volt_idx; + const int idx_to_mv[] = { + 0, 12709, 13042, 13375, 14042, 15042, 18042, 18709, 19042 + }; + const u8 idx_to_reg[] = { + 0x00, 0x20, 0x21, 0x22, 0x24, 0x27, 0x28, 0x2A, 0x2B + }; + int this_volt_idx; + u8 status; + int prev_volt_idx; + + dev_dbg(&client->dev, "set_voltage_slew fe_sec_voltage=%d\n", + fe_sec_voltage); + + /* Read status register to clear any stale faults. */ + ret = i2c_master_recv(client, &status, 1); + if (ret < 0) + goto err; + + /* Determine previous voltage */ + switch (dev->reg[0] & 0x2F) { + case 0x00: + prev_volt_idx = 0; + break; + case 0x20: + prev_volt_idx = 1; + break; + case 0x21: + prev_volt_idx = 2; + break; + case 0x22: + prev_volt_idx = 3; + break; + case 0x24: + prev_volt_idx = 4; + break; + case 0x27: + prev_volt_idx = 5; + break; + case 0x28: + prev_volt_idx = 6; + break; + case 0x2A: + prev_volt_idx = 7; + break; + case 0x2B: + prev_volt_idx = 8; + break; + default: + prev_volt_idx = 0; + } + + /* Determine new voltage */ + switch (fe_sec_voltage) { + case SEC_VOLTAGE_OFF: + new_volt_idx = 0; + break; + case SEC_VOLTAGE_13: + new_volt_idx = 2; + break; + case SEC_VOLTAGE_18: + new_volt_idx = 6; + break; + default: + ret = -EINVAL; + goto err; + } + + /* Slew to new voltage if new voltage is greater than current voltage */ + this_volt_idx = prev_volt_idx; + if (this_volt_idx < new_volt_idx) { + while (this_volt_idx < new_volt_idx) { + int delta_mv = idx_to_mv[this_volt_idx+1] - idx_to_mv[this_volt_idx]; + int min_wait_time = delta_mv * min_nanos_per_mv; + + reg0 = idx_to_reg[this_volt_idx+1]; + reg0 |= A8293_FLAG_ODT; + + ret = i2c_master_send(client, ®0, 1); + if (ret < 0) + goto err; + dev->reg[0] = reg0; + this_volt_idx++; + usleep_range(min_wait_time, min_wait_time * 2); + } + } else { /* Else just set the voltage */ + reg0 = idx_to_reg[new_volt_idx]; + reg0 |= A8293_FLAG_ODT; + ret = i2c_master_send(client, ®0, 1); + if (ret < 0) + goto err; + dev->reg[0] = reg0; + } + + /* TMODE=0, TGATE=1 */ + reg1 = 0x82; + if (reg1 != dev->reg[1]) { + ret = i2c_master_send(client, ®1, 1); + if (ret < 0) + goto err; + dev->reg[1] = reg1; + } + + usleep_range(1500, 5000); + + return 0; +err: + dev_dbg(&client->dev, "failed=%d\n", ret); + return ret; +} + + +static int a8293_set_voltage_noslew(struct dvb_frontend *fe, + enum fe_sec_voltage fe_sec_voltage) +{ + struct a8293_dev *dev = fe->sec_priv; + struct i2c_client *client = dev->client; + int ret; + u8 reg0, reg1; + + dev_dbg(&client->dev, "set_voltage_noslew fe_sec_voltage=%d\n", + fe_sec_voltage); + + switch (fe_sec_voltage) { + case SEC_VOLTAGE_OFF: + /* ENB=0 */ + reg0 = 0x10; + break; + case SEC_VOLTAGE_13: + /* VSEL0=1, VSEL1=0, VSEL2=0, VSEL3=0, ENB=1*/ + reg0 = 0x31; + break; + case SEC_VOLTAGE_18: + /* VSEL0=0, VSEL1=0, VSEL2=0, VSEL3=1, ENB=1*/ + reg0 = 0x38; + break; + default: + ret = -EINVAL; + goto err; + } + if (reg0 != dev->reg[0]) { + ret = i2c_master_send(client, ®0, 1); + if (ret < 0) + goto err; + dev->reg[0] = reg0; + } + + /* TMODE=0, TGATE=1 */ + reg1 = 0x82; + if (reg1 != dev->reg[1]) { + ret = i2c_master_send(client, ®1, 1); + if (ret < 0) + goto err; + dev->reg[1] = reg1; + } + + usleep_range(1500, 50000); + return 0; +err: + dev_dbg(&client->dev, "failed=%d\n", ret); + return ret; +} + +static int a8293_set_voltage(struct dvb_frontend *fe, + enum fe_sec_voltage fe_sec_voltage) +{ + struct a8293_dev *dev = fe->sec_priv; + struct i2c_client *client = dev->client; + int volt_slew_nanos_per_mv = dev->volt_slew_nanos_per_mv; + + dev_dbg(&client->dev, "set_voltage volt_slew_nanos_per_mv=%d\n", + volt_slew_nanos_per_mv); + + /* Use slew version if slew rate is set to a sane value */ + if (volt_slew_nanos_per_mv > 0 && volt_slew_nanos_per_mv < 1600) + a8293_set_voltage_slew(dev, client, fe_sec_voltage, + volt_slew_nanos_per_mv); + else + a8293_set_voltage_noslew(fe, fe_sec_voltage); + + return 0; +} + +static int a8293_probe(struct i2c_client *client) +{ + struct a8293_dev *dev; + struct a8293_platform_data *pdata = client->dev.platform_data; + struct dvb_frontend *fe = pdata->dvb_frontend; + int ret; + u8 buf[2]; + + dev = kzalloc(sizeof(*dev), GFP_KERNEL); + if (!dev) { + ret = -ENOMEM; + goto err; + } + + dev->client = client; + dev->volt_slew_nanos_per_mv = pdata->volt_slew_nanos_per_mv; + + /* check if the SEC is there */ + ret = i2c_master_recv(client, buf, 2); + if (ret < 0) + goto err_kfree; + + /* override frontend ops */ + fe->ops.set_voltage = a8293_set_voltage; + fe->sec_priv = dev; + i2c_set_clientdata(client, dev); + + dev_info(&client->dev, "Allegro A8293 SEC successfully attached\n"); + return 0; +err_kfree: + kfree(dev); +err: + dev_dbg(&client->dev, "failed=%d\n", ret); + return ret; +} + +static void a8293_remove(struct i2c_client *client) +{ + struct a8293_dev *dev = i2c_get_clientdata(client); + + dev_dbg(&client->dev, "\n"); + + kfree(dev); +} + +static const struct i2c_device_id a8293_id_table[] = { + {"a8293", 0}, + {} +}; +MODULE_DEVICE_TABLE(i2c, a8293_id_table); + +static struct i2c_driver a8293_driver = { + .driver = { + .name = "a8293", + .suppress_bind_attrs = true, + }, + .probe_new = a8293_probe, + .remove = a8293_remove, + .id_table = a8293_id_table, +}; + +module_i2c_driver(a8293_driver); + +MODULE_AUTHOR("Antti Palosaari "); +MODULE_DESCRIPTION("Allegro A8293 SEC driver"); +MODULE_LICENSE("GPL"); -- cgit v1.2.3