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/clk/axs10x/i2s_pll_clock.c | 225 +++++++++++++++++++++++++++++++++++++ 1 file changed, 225 insertions(+) create mode 100644 drivers/clk/axs10x/i2s_pll_clock.c (limited to 'drivers/clk/axs10x/i2s_pll_clock.c') diff --git a/drivers/clk/axs10x/i2s_pll_clock.c b/drivers/clk/axs10x/i2s_pll_clock.c new file mode 100644 index 000000000..e1fda6ad5 --- /dev/null +++ b/drivers/clk/axs10x/i2s_pll_clock.c @@ -0,0 +1,225 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * Synopsys AXS10X SDP I2S PLL clock driver + * + * Copyright (C) 2016 Synopsys + */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include + +/* PLL registers addresses */ +#define PLL_IDIV_REG 0x0 +#define PLL_FBDIV_REG 0x4 +#define PLL_ODIV0_REG 0x8 +#define PLL_ODIV1_REG 0xC + +struct i2s_pll_cfg { + unsigned int rate; + unsigned int idiv; + unsigned int fbdiv; + unsigned int odiv0; + unsigned int odiv1; +}; + +static const struct i2s_pll_cfg i2s_pll_cfg_27m[] = { + /* 27 Mhz */ + { 1024000, 0x104, 0x451, 0x10E38, 0x2000 }, + { 1411200, 0x104, 0x596, 0x10D35, 0x2000 }, + { 1536000, 0x208, 0xA28, 0x10B2C, 0x2000 }, + { 2048000, 0x82, 0x451, 0x10E38, 0x2000 }, + { 2822400, 0x82, 0x596, 0x10D35, 0x2000 }, + { 3072000, 0x104, 0xA28, 0x10B2C, 0x2000 }, + { 2116800, 0x82, 0x3CF, 0x10C30, 0x2000 }, + { 2304000, 0x104, 0x79E, 0x10B2C, 0x2000 }, + { 0, 0, 0, 0, 0 }, +}; + +static const struct i2s_pll_cfg i2s_pll_cfg_28m[] = { + /* 28.224 Mhz */ + { 1024000, 0x82, 0x105, 0x107DF, 0x2000 }, + { 1411200, 0x28A, 0x1, 0x10001, 0x2000 }, + { 1536000, 0xA28, 0x187, 0x10042, 0x2000 }, + { 2048000, 0x41, 0x105, 0x107DF, 0x2000 }, + { 2822400, 0x145, 0x1, 0x10001, 0x2000 }, + { 3072000, 0x514, 0x187, 0x10042, 0x2000 }, + { 2116800, 0x514, 0x42, 0x10001, 0x2000 }, + { 2304000, 0x619, 0x82, 0x10001, 0x2000 }, + { 0, 0, 0, 0, 0 }, +}; + +struct i2s_pll_clk { + void __iomem *base; + struct clk_hw hw; + struct device *dev; +}; + +static inline void i2s_pll_write(struct i2s_pll_clk *clk, unsigned int reg, + unsigned int val) +{ + writel_relaxed(val, clk->base + reg); +} + +static inline unsigned int i2s_pll_read(struct i2s_pll_clk *clk, + unsigned int reg) +{ + return readl_relaxed(clk->base + reg); +} + +static inline struct i2s_pll_clk *to_i2s_pll_clk(struct clk_hw *hw) +{ + return container_of(hw, struct i2s_pll_clk, hw); +} + +static inline unsigned int i2s_pll_get_value(unsigned int val) +{ + return (val & 0x3F) + ((val >> 6) & 0x3F); +} + +static const struct i2s_pll_cfg *i2s_pll_get_cfg(unsigned long prate) +{ + switch (prate) { + case 27000000: + return i2s_pll_cfg_27m; + case 28224000: + return i2s_pll_cfg_28m; + default: + return NULL; + } +} + +static unsigned long i2s_pll_recalc_rate(struct clk_hw *hw, + unsigned long parent_rate) +{ + struct i2s_pll_clk *clk = to_i2s_pll_clk(hw); + unsigned int idiv, fbdiv, odiv; + + idiv = i2s_pll_get_value(i2s_pll_read(clk, PLL_IDIV_REG)); + fbdiv = i2s_pll_get_value(i2s_pll_read(clk, PLL_FBDIV_REG)); + odiv = i2s_pll_get_value(i2s_pll_read(clk, PLL_ODIV0_REG)); + + return ((parent_rate / idiv) * fbdiv) / odiv; +} + +static long i2s_pll_round_rate(struct clk_hw *hw, unsigned long rate, + unsigned long *prate) +{ + struct i2s_pll_clk *clk = to_i2s_pll_clk(hw); + const struct i2s_pll_cfg *pll_cfg = i2s_pll_get_cfg(*prate); + int i; + + if (!pll_cfg) { + dev_err(clk->dev, "invalid parent rate=%ld\n", *prate); + return -EINVAL; + } + + for (i = 0; pll_cfg[i].rate != 0; i++) + if (pll_cfg[i].rate == rate) + return rate; + + return -EINVAL; +} + +static int i2s_pll_set_rate(struct clk_hw *hw, unsigned long rate, + unsigned long parent_rate) +{ + struct i2s_pll_clk *clk = to_i2s_pll_clk(hw); + const struct i2s_pll_cfg *pll_cfg = i2s_pll_get_cfg(parent_rate); + int i; + + if (!pll_cfg) { + dev_err(clk->dev, "invalid parent rate=%ld\n", parent_rate); + return -EINVAL; + } + + for (i = 0; pll_cfg[i].rate != 0; i++) { + if (pll_cfg[i].rate == rate) { + i2s_pll_write(clk, PLL_IDIV_REG, pll_cfg[i].idiv); + i2s_pll_write(clk, PLL_FBDIV_REG, pll_cfg[i].fbdiv); + i2s_pll_write(clk, PLL_ODIV0_REG, pll_cfg[i].odiv0); + i2s_pll_write(clk, PLL_ODIV1_REG, pll_cfg[i].odiv1); + return 0; + } + } + + dev_err(clk->dev, "invalid rate=%ld, parent_rate=%ld\n", rate, + parent_rate); + return -EINVAL; +} + +static const struct clk_ops i2s_pll_ops = { + .recalc_rate = i2s_pll_recalc_rate, + .round_rate = i2s_pll_round_rate, + .set_rate = i2s_pll_set_rate, +}; + +static int i2s_pll_clk_probe(struct platform_device *pdev) +{ + struct device *dev = &pdev->dev; + struct device_node *node = dev->of_node; + const char *clk_name; + const char *parent_name; + struct clk *clk; + struct i2s_pll_clk *pll_clk; + struct clk_init_data init; + + pll_clk = devm_kzalloc(dev, sizeof(*pll_clk), GFP_KERNEL); + if (!pll_clk) + return -ENOMEM; + + pll_clk->base = devm_platform_ioremap_resource(pdev, 0); + if (IS_ERR(pll_clk->base)) + return PTR_ERR(pll_clk->base); + + memset(&init, 0, sizeof(init)); + clk_name = node->name; + init.name = clk_name; + init.ops = &i2s_pll_ops; + parent_name = of_clk_get_parent_name(node, 0); + init.parent_names = &parent_name; + init.num_parents = 1; + pll_clk->hw.init = &init; + pll_clk->dev = dev; + + clk = devm_clk_register(dev, &pll_clk->hw); + if (IS_ERR(clk)) { + dev_err(dev, "failed to register %s clock (%ld)\n", + clk_name, PTR_ERR(clk)); + return PTR_ERR(clk); + } + + return of_clk_add_provider(node, of_clk_src_simple_get, clk); +} + +static int i2s_pll_clk_remove(struct platform_device *pdev) +{ + of_clk_del_provider(pdev->dev.of_node); + return 0; +} + +static const struct of_device_id i2s_pll_clk_id[] = { + { .compatible = "snps,axs10x-i2s-pll-clock", }, + { }, +}; +MODULE_DEVICE_TABLE(of, i2s_pll_clk_id); + +static struct platform_driver i2s_pll_clk_driver = { + .driver = { + .name = "axs10x-i2s-pll-clock", + .of_match_table = i2s_pll_clk_id, + }, + .probe = i2s_pll_clk_probe, + .remove = i2s_pll_clk_remove, +}; +module_platform_driver(i2s_pll_clk_driver); + +MODULE_AUTHOR("Jose Abreu "); +MODULE_DESCRIPTION("Synopsys AXS10X SDP I2S PLL Clock Driver"); +MODULE_LICENSE("GPL v2"); -- cgit v1.2.3