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/soc-ac97.c | 421 +++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 421 insertions(+) create mode 100644 sound/soc/soc-ac97.c (limited to 'sound/soc/soc-ac97.c') diff --git a/sound/soc/soc-ac97.c b/sound/soc/soc-ac97.c new file mode 100644 index 000000000..32c5be61e --- /dev/null +++ b/sound/soc/soc-ac97.c @@ -0,0 +1,421 @@ +// SPDX-License-Identifier: GPL-2.0+ +// +// soc-ac97.c -- ALSA SoC Audio Layer AC97 support +// +// Copyright 2005 Wolfson Microelectronics PLC. +// Copyright 2005 Openedhand Ltd. +// Copyright (C) 2010 Slimlogic Ltd. +// Copyright (C) 2010 Texas Instruments Inc. +// +// Author: Liam Girdwood +// with code, comments and ideas from :- +// Richard Purdie + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +struct snd_ac97_reset_cfg { + struct pinctrl *pctl; + struct pinctrl_state *pstate_reset; + struct pinctrl_state *pstate_warm_reset; + struct pinctrl_state *pstate_run; + int gpio_sdata; + int gpio_sync; + int gpio_reset; +}; + +static struct snd_ac97_bus soc_ac97_bus = { + .ops = NULL, /* Gets initialized in snd_soc_set_ac97_ops() */ +}; + +static void soc_ac97_device_release(struct device *dev) +{ + kfree(to_ac97_t(dev)); +} + +#ifdef CONFIG_GPIOLIB +struct snd_ac97_gpio_priv { + struct gpio_chip gpio_chip; + unsigned int gpios_set; + struct snd_soc_component *component; +}; + +static inline struct snd_soc_component *gpio_to_component(struct gpio_chip *chip) +{ + struct snd_ac97_gpio_priv *gpio_priv = gpiochip_get_data(chip); + + return gpio_priv->component; +} + +static int snd_soc_ac97_gpio_request(struct gpio_chip *chip, unsigned int offset) +{ + if (offset >= AC97_NUM_GPIOS) + return -EINVAL; + + return 0; +} + +static int snd_soc_ac97_gpio_direction_in(struct gpio_chip *chip, + unsigned int offset) +{ + struct snd_soc_component *component = gpio_to_component(chip); + + dev_dbg(component->dev, "set gpio %d to output\n", offset); + return snd_soc_component_update_bits(component, AC97_GPIO_CFG, + 1 << offset, 1 << offset); +} + +static int snd_soc_ac97_gpio_get(struct gpio_chip *chip, unsigned int offset) +{ + struct snd_soc_component *component = gpio_to_component(chip); + int ret; + + ret = snd_soc_component_read(component, AC97_GPIO_STATUS); + + dev_dbg(component->dev, "get gpio %d : %d\n", offset, + ret & (1 << offset)); + + return !!(ret & (1 << offset)); +} + +static void snd_soc_ac97_gpio_set(struct gpio_chip *chip, unsigned int offset, + int value) +{ + struct snd_ac97_gpio_priv *gpio_priv = gpiochip_get_data(chip); + struct snd_soc_component *component = gpio_to_component(chip); + + gpio_priv->gpios_set &= ~(1 << offset); + gpio_priv->gpios_set |= (!!value) << offset; + snd_soc_component_write(component, AC97_GPIO_STATUS, + gpio_priv->gpios_set); + dev_dbg(component->dev, "set gpio %d to %d\n", offset, !!value); +} + +static int snd_soc_ac97_gpio_direction_out(struct gpio_chip *chip, + unsigned offset, int value) +{ + struct snd_soc_component *component = gpio_to_component(chip); + + dev_dbg(component->dev, "set gpio %d to output\n", offset); + snd_soc_ac97_gpio_set(chip, offset, value); + return snd_soc_component_update_bits(component, AC97_GPIO_CFG, + 1 << offset, 0); +} + +static const struct gpio_chip snd_soc_ac97_gpio_chip = { + .label = "snd_soc_ac97", + .owner = THIS_MODULE, + .request = snd_soc_ac97_gpio_request, + .direction_input = snd_soc_ac97_gpio_direction_in, + .get = snd_soc_ac97_gpio_get, + .direction_output = snd_soc_ac97_gpio_direction_out, + .set = snd_soc_ac97_gpio_set, + .can_sleep = 1, +}; + +static int snd_soc_ac97_init_gpio(struct snd_ac97 *ac97, + struct snd_soc_component *component) +{ + struct snd_ac97_gpio_priv *gpio_priv; + int ret; + + gpio_priv = devm_kzalloc(component->dev, sizeof(*gpio_priv), GFP_KERNEL); + if (!gpio_priv) + return -ENOMEM; + ac97->gpio_priv = gpio_priv; + gpio_priv->component = component; + gpio_priv->gpio_chip = snd_soc_ac97_gpio_chip; + gpio_priv->gpio_chip.ngpio = AC97_NUM_GPIOS; + gpio_priv->gpio_chip.parent = component->dev; + gpio_priv->gpio_chip.base = -1; + + ret = gpiochip_add_data(&gpio_priv->gpio_chip, gpio_priv); + if (ret != 0) + dev_err(component->dev, "Failed to add GPIOs: %d\n", ret); + return ret; +} + +static void snd_soc_ac97_free_gpio(struct snd_ac97 *ac97) +{ + gpiochip_remove(&ac97->gpio_priv->gpio_chip); +} +#else +static int snd_soc_ac97_init_gpio(struct snd_ac97 *ac97, + struct snd_soc_component *component) +{ + return 0; +} + +static void snd_soc_ac97_free_gpio(struct snd_ac97 *ac97) +{ +} +#endif + +/** + * snd_soc_alloc_ac97_component() - Allocate new a AC'97 device + * @component: The COMPONENT for which to create the AC'97 device + * + * Allocated a new snd_ac97 device and intializes it, but does not yet register + * it. The caller is responsible to either call device_add(&ac97->dev) to + * register the device, or to call put_device(&ac97->dev) to free the device. + * + * Returns: A snd_ac97 device or a PTR_ERR in case of an error. + */ +struct snd_ac97 *snd_soc_alloc_ac97_component(struct snd_soc_component *component) +{ + struct snd_ac97 *ac97; + + ac97 = kzalloc(sizeof(struct snd_ac97), GFP_KERNEL); + if (ac97 == NULL) + return ERR_PTR(-ENOMEM); + + ac97->bus = &soc_ac97_bus; + ac97->num = 0; + + ac97->dev.bus = &ac97_bus_type; + ac97->dev.parent = component->card->dev; + ac97->dev.release = soc_ac97_device_release; + + dev_set_name(&ac97->dev, "%d-%d:%s", + component->card->snd_card->number, 0, + component->name); + + device_initialize(&ac97->dev); + + return ac97; +} +EXPORT_SYMBOL(snd_soc_alloc_ac97_component); + +/** + * snd_soc_new_ac97_component - initailise AC97 device + * @component: audio component + * @id: The expected device ID + * @id_mask: Mask that is applied to the device ID before comparing with @id + * + * Initialises AC97 component resources for use by ad-hoc devices only. + * + * If @id is not 0 this function will reset the device, then read the ID from + * the device and check if it matches the expected ID. If it doesn't match an + * error will be returned and device will not be registered. + * + * Returns: A PTR_ERR() on failure or a valid snd_ac97 struct on success. + */ +struct snd_ac97 *snd_soc_new_ac97_component(struct snd_soc_component *component, + unsigned int id, unsigned int id_mask) +{ + struct snd_ac97 *ac97; + int ret; + + ac97 = snd_soc_alloc_ac97_component(component); + if (IS_ERR(ac97)) + return ac97; + + if (id) { + ret = snd_ac97_reset(ac97, false, id, id_mask); + if (ret < 0) { + dev_err(component->dev, "Failed to reset AC97 device: %d\n", + ret); + goto err_put_device; + } + } + + ret = device_add(&ac97->dev); + if (ret) + goto err_put_device; + + ret = snd_soc_ac97_init_gpio(ac97, component); + if (ret) + goto err_put_device; + + return ac97; + +err_put_device: + put_device(&ac97->dev); + return ERR_PTR(ret); +} +EXPORT_SYMBOL_GPL(snd_soc_new_ac97_component); + +/** + * snd_soc_free_ac97_component - free AC97 component device + * @ac97: snd_ac97 device to be freed + * + * Frees AC97 component device resources. + */ +void snd_soc_free_ac97_component(struct snd_ac97 *ac97) +{ + snd_soc_ac97_free_gpio(ac97); + device_del(&ac97->dev); + ac97->bus = NULL; + put_device(&ac97->dev); +} +EXPORT_SYMBOL_GPL(snd_soc_free_ac97_component); + +static struct snd_ac97_reset_cfg snd_ac97_rst_cfg; + +static void snd_soc_ac97_warm_reset(struct snd_ac97 *ac97) +{ + struct pinctrl *pctl = snd_ac97_rst_cfg.pctl; + + pinctrl_select_state(pctl, snd_ac97_rst_cfg.pstate_warm_reset); + + gpio_direction_output(snd_ac97_rst_cfg.gpio_sync, 1); + + udelay(10); + + gpio_direction_output(snd_ac97_rst_cfg.gpio_sync, 0); + + pinctrl_select_state(pctl, snd_ac97_rst_cfg.pstate_run); + msleep(2); +} + +static void snd_soc_ac97_reset(struct snd_ac97 *ac97) +{ + struct pinctrl *pctl = snd_ac97_rst_cfg.pctl; + + pinctrl_select_state(pctl, snd_ac97_rst_cfg.pstate_reset); + + gpio_direction_output(snd_ac97_rst_cfg.gpio_sync, 0); + gpio_direction_output(snd_ac97_rst_cfg.gpio_sdata, 0); + gpio_direction_output(snd_ac97_rst_cfg.gpio_reset, 0); + + udelay(10); + + gpio_direction_output(snd_ac97_rst_cfg.gpio_reset, 1); + + pinctrl_select_state(pctl, snd_ac97_rst_cfg.pstate_run); + msleep(2); +} + +static int snd_soc_ac97_parse_pinctl(struct device *dev, + struct snd_ac97_reset_cfg *cfg) +{ + struct pinctrl *p; + struct pinctrl_state *state; + int gpio; + int ret; + + p = devm_pinctrl_get(dev); + if (IS_ERR(p)) { + dev_err(dev, "Failed to get pinctrl\n"); + return PTR_ERR(p); + } + cfg->pctl = p; + + state = pinctrl_lookup_state(p, "ac97-reset"); + if (IS_ERR(state)) { + dev_err(dev, "Can't find pinctrl state ac97-reset\n"); + return PTR_ERR(state); + } + cfg->pstate_reset = state; + + state = pinctrl_lookup_state(p, "ac97-warm-reset"); + if (IS_ERR(state)) { + dev_err(dev, "Can't find pinctrl state ac97-warm-reset\n"); + return PTR_ERR(state); + } + cfg->pstate_warm_reset = state; + + state = pinctrl_lookup_state(p, "ac97-running"); + if (IS_ERR(state)) { + dev_err(dev, "Can't find pinctrl state ac97-running\n"); + return PTR_ERR(state); + } + cfg->pstate_run = state; + + gpio = of_get_named_gpio(dev->of_node, "ac97-gpios", 0); + if (gpio < 0) { + dev_err(dev, "Can't find ac97-sync gpio\n"); + return gpio; + } + ret = devm_gpio_request(dev, gpio, "AC97 link sync"); + if (ret) { + dev_err(dev, "Failed requesting ac97-sync gpio\n"); + return ret; + } + cfg->gpio_sync = gpio; + + gpio = of_get_named_gpio(dev->of_node, "ac97-gpios", 1); + if (gpio < 0) { + dev_err(dev, "Can't find ac97-sdata gpio %d\n", gpio); + return gpio; + } + ret = devm_gpio_request(dev, gpio, "AC97 link sdata"); + if (ret) { + dev_err(dev, "Failed requesting ac97-sdata gpio\n"); + return ret; + } + cfg->gpio_sdata = gpio; + + gpio = of_get_named_gpio(dev->of_node, "ac97-gpios", 2); + if (gpio < 0) { + dev_err(dev, "Can't find ac97-reset gpio\n"); + return gpio; + } + ret = devm_gpio_request(dev, gpio, "AC97 link reset"); + if (ret) { + dev_err(dev, "Failed requesting ac97-reset gpio\n"); + return ret; + } + cfg->gpio_reset = gpio; + + return 0; +} + +struct snd_ac97_bus_ops *soc_ac97_ops; +EXPORT_SYMBOL_GPL(soc_ac97_ops); + +int snd_soc_set_ac97_ops(struct snd_ac97_bus_ops *ops) +{ + if (ops == soc_ac97_ops) + return 0; + + if (soc_ac97_ops && ops) + return -EBUSY; + + soc_ac97_ops = ops; + soc_ac97_bus.ops = ops; + + return 0; +} +EXPORT_SYMBOL_GPL(snd_soc_set_ac97_ops); + +/** + * snd_soc_set_ac97_ops_of_reset - Set ac97 ops with generic ac97 reset functions + * @ops: bus ops + * @pdev: platform device + * + * This function sets the reset and warm_reset properties of ops and parses + * the device node of pdev to get pinctrl states and gpio numbers to use. + */ +int snd_soc_set_ac97_ops_of_reset(struct snd_ac97_bus_ops *ops, + struct platform_device *pdev) +{ + struct device *dev = &pdev->dev; + struct snd_ac97_reset_cfg cfg; + int ret; + + ret = snd_soc_ac97_parse_pinctl(dev, &cfg); + if (ret) + return ret; + + ret = snd_soc_set_ac97_ops(ops); + if (ret) + return ret; + + ops->warm_reset = snd_soc_ac97_warm_reset; + ops->reset = snd_soc_ac97_reset; + + snd_ac97_rst_cfg = cfg; + return 0; +} +EXPORT_SYMBOL_GPL(snd_soc_set_ac97_ops_of_reset); -- cgit v1.2.3