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/img/img-spdif-in.c | 889 +++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 889 insertions(+) create mode 100644 sound/soc/img/img-spdif-in.c (limited to 'sound/soc/img/img-spdif-in.c') diff --git a/sound/soc/img/img-spdif-in.c b/sound/soc/img/img-spdif-in.c new file mode 100644 index 000000000..3f1d1a7e8 --- /dev/null +++ b/sound/soc/img/img-spdif-in.c @@ -0,0 +1,889 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * IMG SPDIF input controller driver + * + * Copyright (C) 2015 Imagination Technologies Ltd. + * + * Author: Damien Horsley + */ + +#include +#include +#include +#include +#include +#include +#include +#include + +#include +#include +#include +#include +#include +#include + +#define IMG_SPDIF_IN_RX_FIFO_OFFSET 0 + +#define IMG_SPDIF_IN_CTL 0x4 +#define IMG_SPDIF_IN_CTL_LOCKLO_MASK 0xff +#define IMG_SPDIF_IN_CTL_LOCKLO_SHIFT 0 +#define IMG_SPDIF_IN_CTL_LOCKHI_MASK 0xff00 +#define IMG_SPDIF_IN_CTL_LOCKHI_SHIFT 8 +#define IMG_SPDIF_IN_CTL_TRK_MASK 0xff0000 +#define IMG_SPDIF_IN_CTL_TRK_SHIFT 16 +#define IMG_SPDIF_IN_CTL_SRD_MASK 0x70000000 +#define IMG_SPDIF_IN_CTL_SRD_SHIFT 28 +#define IMG_SPDIF_IN_CTL_SRT_MASK BIT(31) + +#define IMG_SPDIF_IN_STATUS 0x8 +#define IMG_SPDIF_IN_STATUS_SAM_MASK 0x7000 +#define IMG_SPDIF_IN_STATUS_SAM_SHIFT 12 +#define IMG_SPDIF_IN_STATUS_LOCK_MASK BIT(15) +#define IMG_SPDIF_IN_STATUS_LOCK_SHIFT 15 + +#define IMG_SPDIF_IN_CLKGEN 0x1c +#define IMG_SPDIF_IN_CLKGEN_NOM_MASK 0x3ff +#define IMG_SPDIF_IN_CLKGEN_NOM_SHIFT 0 +#define IMG_SPDIF_IN_CLKGEN_HLD_MASK 0x3ff0000 +#define IMG_SPDIF_IN_CLKGEN_HLD_SHIFT 16 + +#define IMG_SPDIF_IN_CSL 0x20 + +#define IMG_SPDIF_IN_CSH 0x24 +#define IMG_SPDIF_IN_CSH_MASK 0xff +#define IMG_SPDIF_IN_CSH_SHIFT 0 + +#define IMG_SPDIF_IN_SOFT_RESET 0x28 +#define IMG_SPDIF_IN_SOFT_RESET_MASK BIT(0) + +#define IMG_SPDIF_IN_ACLKGEN_START 0x2c +#define IMG_SPDIF_IN_ACLKGEN_NOM_MASK 0x3ff +#define IMG_SPDIF_IN_ACLKGEN_NOM_SHIFT 0 +#define IMG_SPDIF_IN_ACLKGEN_HLD_MASK 0xffc00 +#define IMG_SPDIF_IN_ACLKGEN_HLD_SHIFT 10 +#define IMG_SPDIF_IN_ACLKGEN_TRK_MASK 0xff00000 +#define IMG_SPDIF_IN_ACLKGEN_TRK_SHIFT 20 + +#define IMG_SPDIF_IN_NUM_ACLKGEN 4 + +struct img_spdif_in { + spinlock_t lock; + void __iomem *base; + struct clk *clk_sys; + struct snd_dmaengine_dai_dma_data dma_data; + struct device *dev; + unsigned int trk; + bool multi_freq; + int lock_acquire; + int lock_release; + unsigned int single_freq; + unsigned int multi_freqs[IMG_SPDIF_IN_NUM_ACLKGEN]; + bool active; + u32 suspend_clkgen; + u32 suspend_ctl; + + /* Write-only registers */ + unsigned int aclkgen_regs[IMG_SPDIF_IN_NUM_ACLKGEN]; +}; + +static int img_spdif_in_runtime_suspend(struct device *dev) +{ + struct img_spdif_in *spdif = dev_get_drvdata(dev); + + clk_disable_unprepare(spdif->clk_sys); + + return 0; +} + +static int img_spdif_in_runtime_resume(struct device *dev) +{ + struct img_spdif_in *spdif = dev_get_drvdata(dev); + int ret; + + ret = clk_prepare_enable(spdif->clk_sys); + if (ret) { + dev_err(dev, "Unable to enable sys clock\n"); + return ret; + } + + return 0; +} + +static inline void img_spdif_in_writel(struct img_spdif_in *spdif, + u32 val, u32 reg) +{ + writel(val, spdif->base + reg); +} + +static inline u32 img_spdif_in_readl(struct img_spdif_in *spdif, u32 reg) +{ + return readl(spdif->base + reg); +} + +static inline void img_spdif_in_aclkgen_writel(struct img_spdif_in *spdif, + u32 index) +{ + img_spdif_in_writel(spdif, spdif->aclkgen_regs[index], + IMG_SPDIF_IN_ACLKGEN_START + (index * 0x4)); +} + +static int img_spdif_in_check_max_rate(struct img_spdif_in *spdif, + unsigned int sample_rate, unsigned long *actual_freq) +{ + unsigned long min_freq, freq_t; + + /* Clock rate must be at least 24x the bit rate */ + min_freq = sample_rate * 2 * 32 * 24; + + freq_t = clk_get_rate(spdif->clk_sys); + + if (freq_t < min_freq) + return -EINVAL; + + *actual_freq = freq_t; + + return 0; +} + +static int img_spdif_in_do_clkgen_calc(unsigned int rate, unsigned int *pnom, + unsigned int *phld, unsigned long clk_rate) +{ + unsigned int ori, nom, hld; + + /* + * Calculate oversampling ratio, nominal phase increment and hold + * increment for the given rate / frequency + */ + + if (!rate) + return -EINVAL; + + ori = clk_rate / (rate * 64); + + if (!ori) + return -EINVAL; + + nom = (4096 / ori) + 1; + do + hld = 4096 - (--nom * (ori - 1)); + while (hld < 120); + + *pnom = nom; + *phld = hld; + + return 0; +} + +static int img_spdif_in_do_clkgen_single(struct img_spdif_in *spdif, + unsigned int rate) +{ + unsigned int nom, hld; + unsigned long flags, clk_rate; + int ret = 0; + u32 reg; + + ret = img_spdif_in_check_max_rate(spdif, rate, &clk_rate); + if (ret) + return ret; + + ret = img_spdif_in_do_clkgen_calc(rate, &nom, &hld, clk_rate); + if (ret) + return ret; + + reg = (nom << IMG_SPDIF_IN_CLKGEN_NOM_SHIFT) & + IMG_SPDIF_IN_CLKGEN_NOM_MASK; + reg |= (hld << IMG_SPDIF_IN_CLKGEN_HLD_SHIFT) & + IMG_SPDIF_IN_CLKGEN_HLD_MASK; + + spin_lock_irqsave(&spdif->lock, flags); + + if (spdif->active) { + spin_unlock_irqrestore(&spdif->lock, flags); + return -EBUSY; + } + + img_spdif_in_writel(spdif, reg, IMG_SPDIF_IN_CLKGEN); + + spdif->single_freq = rate; + + spin_unlock_irqrestore(&spdif->lock, flags); + + return 0; +} + +static int img_spdif_in_do_clkgen_multi(struct img_spdif_in *spdif, + unsigned int multi_freqs[]) +{ + unsigned int nom, hld, rate, max_rate = 0; + unsigned long flags, clk_rate; + int i, ret = 0; + u32 reg, trk_reg, temp_regs[IMG_SPDIF_IN_NUM_ACLKGEN]; + + for (i = 0; i < IMG_SPDIF_IN_NUM_ACLKGEN; i++) + if (multi_freqs[i] > max_rate) + max_rate = multi_freqs[i]; + + ret = img_spdif_in_check_max_rate(spdif, max_rate, &clk_rate); + if (ret) + return ret; + + for (i = 0; i < IMG_SPDIF_IN_NUM_ACLKGEN; i++) { + rate = multi_freqs[i]; + + ret = img_spdif_in_do_clkgen_calc(rate, &nom, &hld, clk_rate); + if (ret) + return ret; + + reg = (nom << IMG_SPDIF_IN_ACLKGEN_NOM_SHIFT) & + IMG_SPDIF_IN_ACLKGEN_NOM_MASK; + reg |= (hld << IMG_SPDIF_IN_ACLKGEN_HLD_SHIFT) & + IMG_SPDIF_IN_ACLKGEN_HLD_MASK; + temp_regs[i] = reg; + } + + spin_lock_irqsave(&spdif->lock, flags); + + if (spdif->active) { + spin_unlock_irqrestore(&spdif->lock, flags); + return -EBUSY; + } + + trk_reg = spdif->trk << IMG_SPDIF_IN_ACLKGEN_TRK_SHIFT; + + for (i = 0; i < IMG_SPDIF_IN_NUM_ACLKGEN; i++) { + spdif->aclkgen_regs[i] = temp_regs[i] | trk_reg; + img_spdif_in_aclkgen_writel(spdif, i); + } + + spdif->multi_freq = true; + spdif->multi_freqs[0] = multi_freqs[0]; + spdif->multi_freqs[1] = multi_freqs[1]; + spdif->multi_freqs[2] = multi_freqs[2]; + spdif->multi_freqs[3] = multi_freqs[3]; + + spin_unlock_irqrestore(&spdif->lock, flags); + + return 0; +} + +static int img_spdif_in_iec958_info(struct snd_kcontrol *kcontrol, + struct snd_ctl_elem_info *uinfo) +{ + uinfo->type = SNDRV_CTL_ELEM_TYPE_IEC958; + uinfo->count = 1; + + return 0; +} + +static int img_spdif_in_get_status_mask(struct snd_kcontrol *kcontrol, + struct snd_ctl_elem_value *ucontrol) +{ + ucontrol->value.iec958.status[0] = 0xff; + ucontrol->value.iec958.status[1] = 0xff; + ucontrol->value.iec958.status[2] = 0xff; + ucontrol->value.iec958.status[3] = 0xff; + ucontrol->value.iec958.status[4] = 0xff; + + return 0; +} + +static int img_spdif_in_get_status(struct snd_kcontrol *kcontrol, + struct snd_ctl_elem_value *ucontrol) +{ + struct snd_soc_dai *cpu_dai = snd_kcontrol_chip(kcontrol); + struct img_spdif_in *spdif = snd_soc_dai_get_drvdata(cpu_dai); + u32 reg; + + reg = img_spdif_in_readl(spdif, IMG_SPDIF_IN_CSL); + ucontrol->value.iec958.status[0] = reg & 0xff; + ucontrol->value.iec958.status[1] = (reg >> 8) & 0xff; + ucontrol->value.iec958.status[2] = (reg >> 16) & 0xff; + ucontrol->value.iec958.status[3] = (reg >> 24) & 0xff; + reg = img_spdif_in_readl(spdif, IMG_SPDIF_IN_CSH); + ucontrol->value.iec958.status[4] = (reg & IMG_SPDIF_IN_CSH_MASK) + >> IMG_SPDIF_IN_CSH_SHIFT; + + return 0; +} + +static int img_spdif_in_info_multi_freq(struct snd_kcontrol *kcontrol, + struct snd_ctl_elem_info *uinfo) +{ + uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER; + uinfo->count = IMG_SPDIF_IN_NUM_ACLKGEN; + uinfo->value.integer.min = 0; + uinfo->value.integer.max = LONG_MAX; + + return 0; +} + +static int img_spdif_in_get_multi_freq(struct snd_kcontrol *kcontrol, + struct snd_ctl_elem_value *ucontrol) +{ + struct snd_soc_dai *cpu_dai = snd_kcontrol_chip(kcontrol); + struct img_spdif_in *spdif = snd_soc_dai_get_drvdata(cpu_dai); + unsigned long flags; + + spin_lock_irqsave(&spdif->lock, flags); + if (spdif->multi_freq) { + ucontrol->value.integer.value[0] = spdif->multi_freqs[0]; + ucontrol->value.integer.value[1] = spdif->multi_freqs[1]; + ucontrol->value.integer.value[2] = spdif->multi_freqs[2]; + ucontrol->value.integer.value[3] = spdif->multi_freqs[3]; + } else { + ucontrol->value.integer.value[0] = 0; + ucontrol->value.integer.value[1] = 0; + ucontrol->value.integer.value[2] = 0; + ucontrol->value.integer.value[3] = 0; + } + spin_unlock_irqrestore(&spdif->lock, flags); + + return 0; +} + +static int img_spdif_in_set_multi_freq(struct snd_kcontrol *kcontrol, + struct snd_ctl_elem_value *ucontrol) +{ + struct snd_soc_dai *cpu_dai = snd_kcontrol_chip(kcontrol); + struct img_spdif_in *spdif = snd_soc_dai_get_drvdata(cpu_dai); + unsigned int multi_freqs[IMG_SPDIF_IN_NUM_ACLKGEN]; + bool multi_freq; + unsigned long flags; + + if ((ucontrol->value.integer.value[0] == 0) && + (ucontrol->value.integer.value[1] == 0) && + (ucontrol->value.integer.value[2] == 0) && + (ucontrol->value.integer.value[3] == 0)) { + multi_freq = false; + } else { + multi_freqs[0] = ucontrol->value.integer.value[0]; + multi_freqs[1] = ucontrol->value.integer.value[1]; + multi_freqs[2] = ucontrol->value.integer.value[2]; + multi_freqs[3] = ucontrol->value.integer.value[3]; + multi_freq = true; + } + + if (multi_freq) + return img_spdif_in_do_clkgen_multi(spdif, multi_freqs); + + spin_lock_irqsave(&spdif->lock, flags); + + if (spdif->active) { + spin_unlock_irqrestore(&spdif->lock, flags); + return -EBUSY; + } + + spdif->multi_freq = false; + + spin_unlock_irqrestore(&spdif->lock, flags); + + return 0; +} + +static int img_spdif_in_info_lock_freq(struct snd_kcontrol *kcontrol, + struct snd_ctl_elem_info *uinfo) +{ + uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER; + uinfo->count = 1; + uinfo->value.integer.min = 0; + uinfo->value.integer.max = LONG_MAX; + + return 0; +} + +static int img_spdif_in_get_lock_freq(struct snd_kcontrol *kcontrol, + struct snd_ctl_elem_value *uc) +{ + struct snd_soc_dai *cpu_dai = snd_kcontrol_chip(kcontrol); + struct img_spdif_in *spdif = snd_soc_dai_get_drvdata(cpu_dai); + u32 reg; + int i; + unsigned long flags; + + spin_lock_irqsave(&spdif->lock, flags); + + reg = img_spdif_in_readl(spdif, IMG_SPDIF_IN_STATUS); + if (reg & IMG_SPDIF_IN_STATUS_LOCK_MASK) { + if (spdif->multi_freq) { + i = ((reg & IMG_SPDIF_IN_STATUS_SAM_MASK) >> + IMG_SPDIF_IN_STATUS_SAM_SHIFT) - 1; + uc->value.integer.value[0] = spdif->multi_freqs[i]; + } else { + uc->value.integer.value[0] = spdif->single_freq; + } + } else { + uc->value.integer.value[0] = 0; + } + + spin_unlock_irqrestore(&spdif->lock, flags); + + return 0; +} + +static int img_spdif_in_info_trk(struct snd_kcontrol *kcontrol, + struct snd_ctl_elem_info *uinfo) +{ + uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER; + uinfo->count = 1; + uinfo->value.integer.min = 0; + uinfo->value.integer.max = 255; + + return 0; +} + +static int img_spdif_in_get_trk(struct snd_kcontrol *kcontrol, + struct snd_ctl_elem_value *ucontrol) +{ + struct snd_soc_dai *cpu_dai = snd_kcontrol_chip(kcontrol); + struct img_spdif_in *spdif = snd_soc_dai_get_drvdata(cpu_dai); + + ucontrol->value.integer.value[0] = spdif->trk; + + return 0; +} + +static int img_spdif_in_set_trk(struct snd_kcontrol *kcontrol, + struct snd_ctl_elem_value *ucontrol) +{ + struct snd_soc_dai *cpu_dai = snd_kcontrol_chip(kcontrol); + struct img_spdif_in *spdif = snd_soc_dai_get_drvdata(cpu_dai); + unsigned long flags; + int i; + u32 reg; + + spin_lock_irqsave(&spdif->lock, flags); + + if (spdif->active) { + spin_unlock_irqrestore(&spdif->lock, flags); + return -EBUSY; + } + + spdif->trk = ucontrol->value.integer.value[0]; + + reg = img_spdif_in_readl(spdif, IMG_SPDIF_IN_CTL); + reg &= ~IMG_SPDIF_IN_CTL_TRK_MASK; + reg |= spdif->trk << IMG_SPDIF_IN_CTL_TRK_SHIFT; + img_spdif_in_writel(spdif, reg, IMG_SPDIF_IN_CTL); + + for (i = 0; i < IMG_SPDIF_IN_NUM_ACLKGEN; i++) { + spdif->aclkgen_regs[i] = (spdif->aclkgen_regs[i] & + ~IMG_SPDIF_IN_ACLKGEN_TRK_MASK) | + (spdif->trk << IMG_SPDIF_IN_ACLKGEN_TRK_SHIFT); + + img_spdif_in_aclkgen_writel(spdif, i); + } + + spin_unlock_irqrestore(&spdif->lock, flags); + + return 0; +} + +static int img_spdif_in_info_lock(struct snd_kcontrol *kcontrol, + struct snd_ctl_elem_info *uinfo) +{ + uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER; + uinfo->count = 1; + uinfo->value.integer.min = -128; + uinfo->value.integer.max = 127; + + return 0; +} + +static int img_spdif_in_get_lock_acquire(struct snd_kcontrol *kcontrol, + struct snd_ctl_elem_value *ucontrol) +{ + struct snd_soc_dai *cpu_dai = snd_kcontrol_chip(kcontrol); + struct img_spdif_in *spdif = snd_soc_dai_get_drvdata(cpu_dai); + + ucontrol->value.integer.value[0] = spdif->lock_acquire; + + return 0; +} + +static int img_spdif_in_set_lock_acquire(struct snd_kcontrol *kcontrol, + struct snd_ctl_elem_value *ucontrol) +{ + struct snd_soc_dai *cpu_dai = snd_kcontrol_chip(kcontrol); + struct img_spdif_in *spdif = snd_soc_dai_get_drvdata(cpu_dai); + unsigned long flags; + u32 reg; + + spin_lock_irqsave(&spdif->lock, flags); + + if (spdif->active) { + spin_unlock_irqrestore(&spdif->lock, flags); + return -EBUSY; + } + + spdif->lock_acquire = ucontrol->value.integer.value[0]; + + reg = img_spdif_in_readl(spdif, IMG_SPDIF_IN_CTL); + reg &= ~IMG_SPDIF_IN_CTL_LOCKHI_MASK; + reg |= (spdif->lock_acquire << IMG_SPDIF_IN_CTL_LOCKHI_SHIFT) & + IMG_SPDIF_IN_CTL_LOCKHI_MASK; + img_spdif_in_writel(spdif, reg, IMG_SPDIF_IN_CTL); + + spin_unlock_irqrestore(&spdif->lock, flags); + + return 0; +} + +static int img_spdif_in_get_lock_release(struct snd_kcontrol *kcontrol, + struct snd_ctl_elem_value *ucontrol) +{ + struct snd_soc_dai *cpu_dai = snd_kcontrol_chip(kcontrol); + struct img_spdif_in *spdif = snd_soc_dai_get_drvdata(cpu_dai); + + ucontrol->value.integer.value[0] = spdif->lock_release; + + return 0; +} + +static int img_spdif_in_set_lock_release(struct snd_kcontrol *kcontrol, + struct snd_ctl_elem_value *ucontrol) +{ + struct snd_soc_dai *cpu_dai = snd_kcontrol_chip(kcontrol); + struct img_spdif_in *spdif = snd_soc_dai_get_drvdata(cpu_dai); + unsigned long flags; + u32 reg; + + spin_lock_irqsave(&spdif->lock, flags); + + if (spdif->active) { + spin_unlock_irqrestore(&spdif->lock, flags); + return -EBUSY; + } + + spdif->lock_release = ucontrol->value.integer.value[0]; + + reg = img_spdif_in_readl(spdif, IMG_SPDIF_IN_CTL); + reg &= ~IMG_SPDIF_IN_CTL_LOCKLO_MASK; + reg |= (spdif->lock_release << IMG_SPDIF_IN_CTL_LOCKLO_SHIFT) & + IMG_SPDIF_IN_CTL_LOCKLO_MASK; + img_spdif_in_writel(spdif, reg, IMG_SPDIF_IN_CTL); + + spin_unlock_irqrestore(&spdif->lock, flags); + + return 0; +} + +static struct snd_kcontrol_new img_spdif_in_controls[] = { + { + .access = SNDRV_CTL_ELEM_ACCESS_READ, + .iface = SNDRV_CTL_ELEM_IFACE_PCM, + .name = SNDRV_CTL_NAME_IEC958("", CAPTURE, MASK), + .info = img_spdif_in_iec958_info, + .get = img_spdif_in_get_status_mask + }, + { + .access = SNDRV_CTL_ELEM_ACCESS_READ | + SNDRV_CTL_ELEM_ACCESS_VOLATILE, + .iface = SNDRV_CTL_ELEM_IFACE_PCM, + .name = SNDRV_CTL_NAME_IEC958("", CAPTURE, DEFAULT), + .info = img_spdif_in_iec958_info, + .get = img_spdif_in_get_status + }, + { + .iface = SNDRV_CTL_ELEM_IFACE_PCM, + .name = "SPDIF In Multi Frequency Acquire", + .info = img_spdif_in_info_multi_freq, + .get = img_spdif_in_get_multi_freq, + .put = img_spdif_in_set_multi_freq + }, + { + .access = SNDRV_CTL_ELEM_ACCESS_READ | + SNDRV_CTL_ELEM_ACCESS_VOLATILE, + .iface = SNDRV_CTL_ELEM_IFACE_PCM, + .name = "SPDIF In Lock Frequency", + .info = img_spdif_in_info_lock_freq, + .get = img_spdif_in_get_lock_freq + }, + { + .iface = SNDRV_CTL_ELEM_IFACE_PCM, + .name = "SPDIF In Lock TRK", + .info = img_spdif_in_info_trk, + .get = img_spdif_in_get_trk, + .put = img_spdif_in_set_trk + }, + { + .iface = SNDRV_CTL_ELEM_IFACE_PCM, + .name = "SPDIF In Lock Acquire Threshold", + .info = img_spdif_in_info_lock, + .get = img_spdif_in_get_lock_acquire, + .put = img_spdif_in_set_lock_acquire + }, + { + .iface = SNDRV_CTL_ELEM_IFACE_PCM, + .name = "SPDIF In Lock Release Threshold", + .info = img_spdif_in_info_lock, + .get = img_spdif_in_get_lock_release, + .put = img_spdif_in_set_lock_release + } +}; + +static int img_spdif_in_trigger(struct snd_pcm_substream *substream, int cmd, + struct snd_soc_dai *dai) +{ + unsigned long flags; + struct img_spdif_in *spdif = snd_soc_dai_get_drvdata(dai); + int ret = 0; + u32 reg; + + spin_lock_irqsave(&spdif->lock, flags); + + switch (cmd) { + case SNDRV_PCM_TRIGGER_START: + case SNDRV_PCM_TRIGGER_RESUME: + case SNDRV_PCM_TRIGGER_PAUSE_RELEASE: + reg = img_spdif_in_readl(spdif, IMG_SPDIF_IN_CTL); + if (spdif->multi_freq) + reg &= ~IMG_SPDIF_IN_CTL_SRD_MASK; + else + reg |= (1UL << IMG_SPDIF_IN_CTL_SRD_SHIFT); + reg |= IMG_SPDIF_IN_CTL_SRT_MASK; + img_spdif_in_writel(spdif, reg, IMG_SPDIF_IN_CTL); + spdif->active = true; + break; + case SNDRV_PCM_TRIGGER_STOP: + case SNDRV_PCM_TRIGGER_SUSPEND: + case SNDRV_PCM_TRIGGER_PAUSE_PUSH: + reg = img_spdif_in_readl(spdif, IMG_SPDIF_IN_CTL); + reg &= ~IMG_SPDIF_IN_CTL_SRT_MASK; + img_spdif_in_writel(spdif, reg, IMG_SPDIF_IN_CTL); + spdif->active = false; + break; + default: + ret = -EINVAL; + } + + spin_unlock_irqrestore(&spdif->lock, flags); + + return ret; +} + +static int img_spdif_in_hw_params(struct snd_pcm_substream *substream, + struct snd_pcm_hw_params *params, struct snd_soc_dai *dai) +{ + struct img_spdif_in *spdif = snd_soc_dai_get_drvdata(dai); + unsigned int rate, channels; + snd_pcm_format_t format; + + rate = params_rate(params); + channels = params_channels(params); + format = params_format(params); + + if (format != SNDRV_PCM_FORMAT_S32_LE) + return -EINVAL; + + if (channels != 2) + return -EINVAL; + + return img_spdif_in_do_clkgen_single(spdif, rate); +} + +static const struct snd_soc_dai_ops img_spdif_in_dai_ops = { + .trigger = img_spdif_in_trigger, + .hw_params = img_spdif_in_hw_params +}; + +static int img_spdif_in_dai_probe(struct snd_soc_dai *dai) +{ + struct img_spdif_in *spdif = snd_soc_dai_get_drvdata(dai); + + snd_soc_dai_init_dma_data(dai, NULL, &spdif->dma_data); + + snd_soc_add_dai_controls(dai, img_spdif_in_controls, + ARRAY_SIZE(img_spdif_in_controls)); + + return 0; +} + +static struct snd_soc_dai_driver img_spdif_in_dai = { + .probe = img_spdif_in_dai_probe, + .capture = { + .channels_min = 2, + .channels_max = 2, + .rates = SNDRV_PCM_RATE_8000_192000, + .formats = SNDRV_PCM_FMTBIT_S32_LE + }, + .ops = &img_spdif_in_dai_ops +}; + +static const struct snd_soc_component_driver img_spdif_in_component = { + .name = "img-spdif-in", + .legacy_dai_naming = 1, +}; + +static int img_spdif_in_probe(struct platform_device *pdev) +{ + struct img_spdif_in *spdif; + struct resource *res; + void __iomem *base; + int ret; + struct reset_control *rst; + u32 reg; + struct device *dev = &pdev->dev; + + spdif = devm_kzalloc(&pdev->dev, sizeof(*spdif), GFP_KERNEL); + if (!spdif) + return -ENOMEM; + + platform_set_drvdata(pdev, spdif); + + spdif->dev = &pdev->dev; + + base = devm_platform_get_and_ioremap_resource(pdev, 0, &res); + if (IS_ERR(base)) + return PTR_ERR(base); + + spdif->base = base; + + spdif->clk_sys = devm_clk_get(dev, "sys"); + if (IS_ERR(spdif->clk_sys)) + return dev_err_probe(dev, PTR_ERR(spdif->clk_sys), + "Failed to acquire clock 'sys'\n"); + + pm_runtime_enable(&pdev->dev); + if (!pm_runtime_enabled(&pdev->dev)) { + ret = img_spdif_in_runtime_resume(&pdev->dev); + if (ret) + goto err_pm_disable; + } + ret = pm_runtime_resume_and_get(&pdev->dev); + if (ret < 0) + goto err_suspend; + + rst = devm_reset_control_get_exclusive(&pdev->dev, "rst"); + if (IS_ERR(rst)) { + if (PTR_ERR(rst) == -EPROBE_DEFER) { + ret = -EPROBE_DEFER; + goto err_pm_put; + } + dev_dbg(dev, "No top level reset found\n"); + img_spdif_in_writel(spdif, IMG_SPDIF_IN_SOFT_RESET_MASK, + IMG_SPDIF_IN_SOFT_RESET); + img_spdif_in_writel(spdif, 0, IMG_SPDIF_IN_SOFT_RESET); + } else { + reset_control_assert(rst); + reset_control_deassert(rst); + } + + spin_lock_init(&spdif->lock); + + spdif->dma_data.addr = res->start + IMG_SPDIF_IN_RX_FIFO_OFFSET; + spdif->dma_data.addr_width = 4; + spdif->dma_data.maxburst = 4; + spdif->trk = 0x80; + spdif->lock_acquire = 4; + spdif->lock_release = -128; + + reg = (spdif->lock_acquire << IMG_SPDIF_IN_CTL_LOCKHI_SHIFT) & + IMG_SPDIF_IN_CTL_LOCKHI_MASK; + reg |= (spdif->lock_release << IMG_SPDIF_IN_CTL_LOCKLO_SHIFT) & + IMG_SPDIF_IN_CTL_LOCKLO_MASK; + reg |= (spdif->trk << IMG_SPDIF_IN_CTL_TRK_SHIFT) & + IMG_SPDIF_IN_CTL_TRK_MASK; + img_spdif_in_writel(spdif, reg, IMG_SPDIF_IN_CTL); + + pm_runtime_put(&pdev->dev); + + ret = devm_snd_soc_register_component(&pdev->dev, + &img_spdif_in_component, &img_spdif_in_dai, 1); + if (ret) + goto err_suspend; + + ret = devm_snd_dmaengine_pcm_register(&pdev->dev, NULL, 0); + if (ret) + goto err_suspend; + + return 0; + +err_pm_put: + pm_runtime_put(&pdev->dev); +err_suspend: + if (!pm_runtime_enabled(&pdev->dev)) + img_spdif_in_runtime_suspend(&pdev->dev); +err_pm_disable: + pm_runtime_disable(&pdev->dev); + + return ret; +} + +static int img_spdif_in_dev_remove(struct platform_device *pdev) +{ + pm_runtime_disable(&pdev->dev); + if (!pm_runtime_status_suspended(&pdev->dev)) + img_spdif_in_runtime_suspend(&pdev->dev); + + return 0; +} + +#ifdef CONFIG_PM_SLEEP +static int img_spdif_in_suspend(struct device *dev) +{ + struct img_spdif_in *spdif = dev_get_drvdata(dev); + int ret; + + if (pm_runtime_status_suspended(dev)) { + ret = img_spdif_in_runtime_resume(dev); + if (ret) + return ret; + } + + spdif->suspend_clkgen = img_spdif_in_readl(spdif, IMG_SPDIF_IN_CLKGEN); + spdif->suspend_ctl = img_spdif_in_readl(spdif, IMG_SPDIF_IN_CTL); + + img_spdif_in_runtime_suspend(dev); + + return 0; +} + +static int img_spdif_in_resume(struct device *dev) +{ + struct img_spdif_in *spdif = dev_get_drvdata(dev); + int i, ret; + + ret = img_spdif_in_runtime_resume(dev); + if (ret) + return ret; + + for (i = 0; i < IMG_SPDIF_IN_NUM_ACLKGEN; i++) + img_spdif_in_aclkgen_writel(spdif, i); + + img_spdif_in_writel(spdif, spdif->suspend_clkgen, IMG_SPDIF_IN_CLKGEN); + img_spdif_in_writel(spdif, spdif->suspend_ctl, IMG_SPDIF_IN_CTL); + + if (pm_runtime_status_suspended(dev)) + img_spdif_in_runtime_suspend(dev); + + return 0; +} +#endif + +static const struct of_device_id img_spdif_in_of_match[] = { + { .compatible = "img,spdif-in" }, + {} +}; +MODULE_DEVICE_TABLE(of, img_spdif_in_of_match); + +static const struct dev_pm_ops img_spdif_in_pm_ops = { + SET_RUNTIME_PM_OPS(img_spdif_in_runtime_suspend, + img_spdif_in_runtime_resume, NULL) + SET_SYSTEM_SLEEP_PM_OPS(img_spdif_in_suspend, img_spdif_in_resume) +}; + +static struct platform_driver img_spdif_in_driver = { + .driver = { + .name = "img-spdif-in", + .of_match_table = img_spdif_in_of_match, + .pm = &img_spdif_in_pm_ops + }, + .probe = img_spdif_in_probe, + .remove = img_spdif_in_dev_remove +}; +module_platform_driver(img_spdif_in_driver); + +MODULE_AUTHOR("Damien Horsley "); +MODULE_DESCRIPTION("IMG SPDIF Input driver"); +MODULE_LICENSE("GPL v2"); -- cgit v1.2.3