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/misc/atmel-ssc.c | 282 +++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 282 insertions(+) create mode 100644 drivers/misc/atmel-ssc.c (limited to 'drivers/misc/atmel-ssc.c') diff --git a/drivers/misc/atmel-ssc.c b/drivers/misc/atmel-ssc.c new file mode 100644 index 000000000..7f9f562d6 --- /dev/null +++ b/drivers/misc/atmel-ssc.c @@ -0,0 +1,282 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * Atmel SSC driver + * + * Copyright (C) 2007 Atmel Corporation + */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#include + +#include "../../sound/soc/atmel/atmel_ssc_dai.h" + +/* Serialize access to ssc_list and user count */ +static DEFINE_MUTEX(user_lock); +static LIST_HEAD(ssc_list); + +struct ssc_device *ssc_request(unsigned int ssc_num) +{ + int ssc_valid = 0; + struct ssc_device *ssc; + + mutex_lock(&user_lock); + list_for_each_entry(ssc, &ssc_list, list) { + if (ssc->pdev->dev.of_node) { + if (of_alias_get_id(ssc->pdev->dev.of_node, "ssc") + == ssc_num) { + ssc->pdev->id = ssc_num; + ssc_valid = 1; + break; + } + } else if (ssc->pdev->id == ssc_num) { + ssc_valid = 1; + break; + } + } + + if (!ssc_valid) { + mutex_unlock(&user_lock); + pr_err("ssc: ssc%d platform device is missing\n", ssc_num); + return ERR_PTR(-ENODEV); + } + + if (ssc->user) { + mutex_unlock(&user_lock); + dev_dbg(&ssc->pdev->dev, "module busy\n"); + return ERR_PTR(-EBUSY); + } + ssc->user++; + mutex_unlock(&user_lock); + + clk_prepare(ssc->clk); + + return ssc; +} +EXPORT_SYMBOL(ssc_request); + +void ssc_free(struct ssc_device *ssc) +{ + bool disable_clk = true; + + mutex_lock(&user_lock); + if (ssc->user) + ssc->user--; + else { + disable_clk = false; + dev_dbg(&ssc->pdev->dev, "device already free\n"); + } + mutex_unlock(&user_lock); + + if (disable_clk) + clk_unprepare(ssc->clk); +} +EXPORT_SYMBOL(ssc_free); + +static struct atmel_ssc_platform_data at91rm9200_config = { + .use_dma = 0, + .has_fslen_ext = 0, +}; + +static struct atmel_ssc_platform_data at91sam9rl_config = { + .use_dma = 0, + .has_fslen_ext = 1, +}; + +static struct atmel_ssc_platform_data at91sam9g45_config = { + .use_dma = 1, + .has_fslen_ext = 1, +}; + +static const struct platform_device_id atmel_ssc_devtypes[] = { + { + .name = "at91rm9200_ssc", + .driver_data = (unsigned long) &at91rm9200_config, + }, { + .name = "at91sam9rl_ssc", + .driver_data = (unsigned long) &at91sam9rl_config, + }, { + .name = "at91sam9g45_ssc", + .driver_data = (unsigned long) &at91sam9g45_config, + }, { + /* sentinel */ + } +}; + +#ifdef CONFIG_OF +static const struct of_device_id atmel_ssc_dt_ids[] = { + { + .compatible = "atmel,at91rm9200-ssc", + .data = &at91rm9200_config, + }, { + .compatible = "atmel,at91sam9rl-ssc", + .data = &at91sam9rl_config, + }, { + .compatible = "atmel,at91sam9g45-ssc", + .data = &at91sam9g45_config, + }, { + /* sentinel */ + } +}; +MODULE_DEVICE_TABLE(of, atmel_ssc_dt_ids); +#endif + +static inline const struct atmel_ssc_platform_data * + atmel_ssc_get_driver_data(struct platform_device *pdev) +{ + if (pdev->dev.of_node) { + const struct of_device_id *match; + match = of_match_node(atmel_ssc_dt_ids, pdev->dev.of_node); + if (match == NULL) + return NULL; + return match->data; + } + + return (struct atmel_ssc_platform_data *) + platform_get_device_id(pdev)->driver_data; +} + +#ifdef CONFIG_SND_ATMEL_SOC_SSC +static int ssc_sound_dai_probe(struct ssc_device *ssc) +{ + struct device_node *np = ssc->pdev->dev.of_node; + int ret; + int id; + + ssc->sound_dai = false; + + if (!of_property_read_bool(np, "#sound-dai-cells")) + return 0; + + id = of_alias_get_id(np, "ssc"); + if (id < 0) + return id; + + ret = atmel_ssc_set_audio(id); + ssc->sound_dai = !ret; + + return ret; +} + +static void ssc_sound_dai_remove(struct ssc_device *ssc) +{ + if (!ssc->sound_dai) + return; + + atmel_ssc_put_audio(of_alias_get_id(ssc->pdev->dev.of_node, "ssc")); +} +#else +static inline int ssc_sound_dai_probe(struct ssc_device *ssc) +{ + if (of_property_read_bool(ssc->pdev->dev.of_node, "#sound-dai-cells")) + return -ENOTSUPP; + + return 0; +} + +static inline void ssc_sound_dai_remove(struct ssc_device *ssc) +{ +} +#endif + +static int ssc_probe(struct platform_device *pdev) +{ + struct resource *regs; + struct ssc_device *ssc; + const struct atmel_ssc_platform_data *plat_dat; + + ssc = devm_kzalloc(&pdev->dev, sizeof(struct ssc_device), GFP_KERNEL); + if (!ssc) { + dev_dbg(&pdev->dev, "out of memory\n"); + return -ENOMEM; + } + + ssc->pdev = pdev; + + plat_dat = atmel_ssc_get_driver_data(pdev); + if (!plat_dat) + return -ENODEV; + ssc->pdata = (struct atmel_ssc_platform_data *)plat_dat; + + if (pdev->dev.of_node) { + struct device_node *np = pdev->dev.of_node; + ssc->clk_from_rk_pin = + of_property_read_bool(np, "atmel,clk-from-rk-pin"); + } + + regs = platform_get_resource(pdev, IORESOURCE_MEM, 0); + ssc->regs = devm_ioremap_resource(&pdev->dev, regs); + if (IS_ERR(ssc->regs)) + return PTR_ERR(ssc->regs); + + ssc->phybase = regs->start; + + ssc->clk = devm_clk_get(&pdev->dev, "pclk"); + if (IS_ERR(ssc->clk)) { + dev_dbg(&pdev->dev, "no pclk clock defined\n"); + return -ENXIO; + } + + /* disable all interrupts */ + clk_prepare_enable(ssc->clk); + ssc_writel(ssc->regs, IDR, -1); + ssc_readl(ssc->regs, SR); + clk_disable_unprepare(ssc->clk); + + ssc->irq = platform_get_irq(pdev, 0); + if (ssc->irq < 0) { + dev_dbg(&pdev->dev, "could not get irq\n"); + return ssc->irq; + } + + mutex_lock(&user_lock); + list_add_tail(&ssc->list, &ssc_list); + mutex_unlock(&user_lock); + + platform_set_drvdata(pdev, ssc); + + dev_info(&pdev->dev, "Atmel SSC device at 0x%p (irq %d)\n", + ssc->regs, ssc->irq); + + if (ssc_sound_dai_probe(ssc)) + dev_err(&pdev->dev, "failed to auto-setup ssc for audio\n"); + + return 0; +} + +static int ssc_remove(struct platform_device *pdev) +{ + struct ssc_device *ssc = platform_get_drvdata(pdev); + + ssc_sound_dai_remove(ssc); + + mutex_lock(&user_lock); + list_del(&ssc->list); + mutex_unlock(&user_lock); + + return 0; +} + +static struct platform_driver ssc_driver = { + .driver = { + .name = "ssc", + .of_match_table = of_match_ptr(atmel_ssc_dt_ids), + }, + .id_table = atmel_ssc_devtypes, + .probe = ssc_probe, + .remove = ssc_remove, +}; +module_platform_driver(ssc_driver); + +MODULE_AUTHOR("Hans-Christian Noren Egtvedt "); +MODULE_DESCRIPTION("SSC driver for Atmel AT91"); +MODULE_LICENSE("GPL"); +MODULE_ALIAS("platform:ssc"); -- cgit v1.2.3