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(). ... --- sound/soc/xilinx/xlnx_spdif.c | 335 ++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 335 insertions(+) create mode 100644 sound/soc/xilinx/xlnx_spdif.c (limited to 'sound/soc/xilinx/xlnx_spdif.c') diff --git a/sound/soc/xilinx/xlnx_spdif.c b/sound/soc/xilinx/xlnx_spdif.c new file mode 100644 index 000000000..7342048e9 --- /dev/null +++ b/sound/soc/xilinx/xlnx_spdif.c @@ -0,0 +1,335 @@ +// SPDX-License-Identifier: GPL-2.0 +// +// Xilinx ASoC SPDIF audio support +// +// Copyright (C) 2018 Xilinx, Inc. +// +// Author: Maruthi Srinivas Bayyavarapu +// + +#include +#include +#include +#include +#include +#include +#include +#include + +#define XLNX_SPDIF_RATES \ + (SNDRV_PCM_RATE_32000 | SNDRV_PCM_RATE_44100 | SNDRV_PCM_RATE_48000 | \ + SNDRV_PCM_RATE_88200 | SNDRV_PCM_RATE_96000 | SNDRV_PCM_RATE_176400 | \ + SNDRV_PCM_RATE_192000) + +#define XLNX_SPDIF_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S24_LE) + +#define XSPDIF_IRQ_STS_REG 0x20 +#define XSPDIF_IRQ_ENABLE_REG 0x28 +#define XSPDIF_SOFT_RESET_REG 0x40 +#define XSPDIF_CONTROL_REG 0x44 +#define XSPDIF_CHAN_0_STS_REG 0x4C +#define XSPDIF_GLOBAL_IRQ_ENABLE_REG 0x1C +#define XSPDIF_CH_A_USER_DATA_REG_0 0x64 + +#define XSPDIF_CORE_ENABLE_MASK BIT(0) +#define XSPDIF_FIFO_FLUSH_MASK BIT(1) +#define XSPDIF_CH_STS_MASK BIT(5) +#define XSPDIF_GLOBAL_IRQ_ENABLE BIT(31) +#define XSPDIF_CLOCK_CONFIG_BITS_MASK GENMASK(5, 2) +#define XSPDIF_CLOCK_CONFIG_BITS_SHIFT 2 +#define XSPDIF_SOFT_RESET_VALUE 0xA + +#define MAX_CHANNELS 2 +#define AES_SAMPLE_WIDTH 32 +#define CH_STATUS_UPDATE_TIMEOUT 40 + +struct spdif_dev_data { + u32 mode; + u32 aclk; + bool rx_chsts_updated; + void __iomem *base; + struct clk *axi_clk; + wait_queue_head_t chsts_q; +}; + +static irqreturn_t xlnx_spdifrx_irq_handler(int irq, void *arg) +{ + u32 val; + struct spdif_dev_data *ctx = arg; + + val = readl(ctx->base + XSPDIF_IRQ_STS_REG); + if (val & XSPDIF_CH_STS_MASK) { + writel(val & XSPDIF_CH_STS_MASK, + ctx->base + XSPDIF_IRQ_STS_REG); + val = readl(ctx->base + + XSPDIF_IRQ_ENABLE_REG); + writel(val & ~XSPDIF_CH_STS_MASK, + ctx->base + XSPDIF_IRQ_ENABLE_REG); + + ctx->rx_chsts_updated = true; + wake_up_interruptible(&ctx->chsts_q); + return IRQ_HANDLED; + } + + return IRQ_NONE; +} + +static int xlnx_spdif_startup(struct snd_pcm_substream *substream, + struct snd_soc_dai *dai) +{ + u32 val; + struct spdif_dev_data *ctx = dev_get_drvdata(dai->dev); + + val = readl(ctx->base + XSPDIF_CONTROL_REG); + val |= XSPDIF_FIFO_FLUSH_MASK; + writel(val, ctx->base + XSPDIF_CONTROL_REG); + + if (substream->stream == SNDRV_PCM_STREAM_CAPTURE) { + writel(XSPDIF_CH_STS_MASK, + ctx->base + XSPDIF_IRQ_ENABLE_REG); + writel(XSPDIF_GLOBAL_IRQ_ENABLE, + ctx->base + XSPDIF_GLOBAL_IRQ_ENABLE_REG); + } + + return 0; +} + +static void xlnx_spdif_shutdown(struct snd_pcm_substream *substream, + struct snd_soc_dai *dai) +{ + struct spdif_dev_data *ctx = dev_get_drvdata(dai->dev); + + writel(XSPDIF_SOFT_RESET_VALUE, ctx->base + XSPDIF_SOFT_RESET_REG); +} + +static int xlnx_spdif_hw_params(struct snd_pcm_substream *substream, + struct snd_pcm_hw_params *params, + struct snd_soc_dai *dai) +{ + u32 val, clk_div, clk_cfg; + struct spdif_dev_data *ctx = dev_get_drvdata(dai->dev); + + clk_div = DIV_ROUND_CLOSEST(ctx->aclk, MAX_CHANNELS * AES_SAMPLE_WIDTH * + params_rate(params)); + + switch (clk_div) { + case 4: + clk_cfg = 0; + break; + case 8: + clk_cfg = 1; + break; + case 16: + clk_cfg = 2; + break; + case 24: + clk_cfg = 3; + break; + case 32: + clk_cfg = 4; + break; + case 48: + clk_cfg = 5; + break; + case 64: + clk_cfg = 6; + break; + default: + return -EINVAL; + } + + val = readl(ctx->base + XSPDIF_CONTROL_REG); + val &= ~XSPDIF_CLOCK_CONFIG_BITS_MASK; + val |= clk_cfg << XSPDIF_CLOCK_CONFIG_BITS_SHIFT; + writel(val, ctx->base + XSPDIF_CONTROL_REG); + + return 0; +} + +static int rx_stream_detect(struct snd_soc_dai *dai) +{ + int err; + struct spdif_dev_data *ctx = dev_get_drvdata(dai->dev); + unsigned long jiffies = msecs_to_jiffies(CH_STATUS_UPDATE_TIMEOUT); + + /* start capture only if stream is detected within 40ms timeout */ + err = wait_event_interruptible_timeout(ctx->chsts_q, + ctx->rx_chsts_updated, + jiffies); + if (!err) { + dev_err(dai->dev, "No streaming audio detected!\n"); + return -EINVAL; + } + ctx->rx_chsts_updated = false; + + return 0; +} + +static int xlnx_spdif_trigger(struct snd_pcm_substream *substream, int cmd, + struct snd_soc_dai *dai) +{ + u32 val; + int ret = 0; + struct spdif_dev_data *ctx = dev_get_drvdata(dai->dev); + + val = readl(ctx->base + XSPDIF_CONTROL_REG); + switch (cmd) { + case SNDRV_PCM_TRIGGER_START: + case SNDRV_PCM_TRIGGER_RESUME: + case SNDRV_PCM_TRIGGER_PAUSE_RELEASE: + val |= XSPDIF_CORE_ENABLE_MASK; + writel(val, ctx->base + XSPDIF_CONTROL_REG); + if (substream->stream == SNDRV_PCM_STREAM_CAPTURE) + ret = rx_stream_detect(dai); + break; + case SNDRV_PCM_TRIGGER_STOP: + case SNDRV_PCM_TRIGGER_SUSPEND: + case SNDRV_PCM_TRIGGER_PAUSE_PUSH: + val &= ~XSPDIF_CORE_ENABLE_MASK; + writel(val, ctx->base + XSPDIF_CONTROL_REG); + break; + default: + ret = -EINVAL; + } + + return ret; +} + +static const struct snd_soc_dai_ops xlnx_spdif_dai_ops = { + .startup = xlnx_spdif_startup, + .shutdown = xlnx_spdif_shutdown, + .trigger = xlnx_spdif_trigger, + .hw_params = xlnx_spdif_hw_params, +}; + +static struct snd_soc_dai_driver xlnx_spdif_tx_dai = { + .name = "xlnx_spdif_tx", + .playback = { + .channels_min = 2, + .channels_max = 2, + .rates = XLNX_SPDIF_RATES, + .formats = XLNX_SPDIF_FORMATS, + }, + .ops = &xlnx_spdif_dai_ops, +}; + +static struct snd_soc_dai_driver xlnx_spdif_rx_dai = { + .name = "xlnx_spdif_rx", + .capture = { + .channels_min = 2, + .channels_max = 2, + .rates = XLNX_SPDIF_RATES, + .formats = XLNX_SPDIF_FORMATS, + }, + .ops = &xlnx_spdif_dai_ops, +}; + +static const struct snd_soc_component_driver xlnx_spdif_component = { + .name = "xlnx-spdif", + .legacy_dai_naming = 1, +}; + +static const struct of_device_id xlnx_spdif_of_match[] = { + { .compatible = "xlnx,spdif-2.0", }, + {}, +}; +MODULE_DEVICE_TABLE(of, xlnx_spdif_of_match); + +static int xlnx_spdif_probe(struct platform_device *pdev) +{ + int ret; + struct snd_soc_dai_driver *dai_drv; + struct spdif_dev_data *ctx; + + struct device *dev = &pdev->dev; + struct device_node *node = dev->of_node; + + ctx = devm_kzalloc(dev, sizeof(*ctx), GFP_KERNEL); + if (!ctx) + return -ENOMEM; + + ctx->axi_clk = devm_clk_get(dev, "s_axi_aclk"); + if (IS_ERR(ctx->axi_clk)) { + ret = PTR_ERR(ctx->axi_clk); + dev_err(dev, "failed to get s_axi_aclk(%d)\n", ret); + return ret; + } + ret = clk_prepare_enable(ctx->axi_clk); + if (ret) { + dev_err(dev, "failed to enable s_axi_aclk(%d)\n", ret); + return ret; + } + + ctx->base = devm_platform_ioremap_resource(pdev, 0); + if (IS_ERR(ctx->base)) { + ret = PTR_ERR(ctx->base); + goto clk_err; + } + ret = of_property_read_u32(node, "xlnx,spdif-mode", &ctx->mode); + if (ret < 0) { + dev_err(dev, "cannot get SPDIF mode\n"); + goto clk_err; + } + if (ctx->mode) { + dai_drv = &xlnx_spdif_tx_dai; + } else { + ret = platform_get_irq(pdev, 0); + if (ret < 0) + goto clk_err; + ret = devm_request_irq(dev, ret, + xlnx_spdifrx_irq_handler, + 0, "XLNX_SPDIF_RX", ctx); + if (ret) { + dev_err(dev, "spdif rx irq request failed\n"); + ret = -ENODEV; + goto clk_err; + } + + init_waitqueue_head(&ctx->chsts_q); + dai_drv = &xlnx_spdif_rx_dai; + } + + ret = of_property_read_u32(node, "xlnx,aud_clk_i", &ctx->aclk); + if (ret < 0) { + dev_err(dev, "cannot get aud_clk_i value\n"); + goto clk_err; + } + + dev_set_drvdata(dev, ctx); + + ret = devm_snd_soc_register_component(dev, &xlnx_spdif_component, + dai_drv, 1); + if (ret) { + dev_err(dev, "SPDIF component registration failed\n"); + goto clk_err; + } + + writel(XSPDIF_SOFT_RESET_VALUE, ctx->base + XSPDIF_SOFT_RESET_REG); + dev_info(dev, "%s DAI registered\n", dai_drv->name); + +clk_err: + clk_disable_unprepare(ctx->axi_clk); + return ret; +} + +static int xlnx_spdif_remove(struct platform_device *pdev) +{ + struct spdif_dev_data *ctx = dev_get_drvdata(&pdev->dev); + + clk_disable_unprepare(ctx->axi_clk); + return 0; +} + +static struct platform_driver xlnx_spdif_driver = { + .driver = { + .name = "xlnx-spdif", + .of_match_table = xlnx_spdif_of_match, + }, + .probe = xlnx_spdif_probe, + .remove = xlnx_spdif_remove, +}; +module_platform_driver(xlnx_spdif_driver); + +MODULE_AUTHOR("Maruthi Srinivas Bayyavarapu "); +MODULE_DESCRIPTION("XILINX SPDIF driver"); +MODULE_LICENSE("GPL v2"); -- cgit v1.2.3