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/samsung/pcm.c | 607 ++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 607 insertions(+) create mode 100644 sound/soc/samsung/pcm.c (limited to 'sound/soc/samsung/pcm.c') diff --git a/sound/soc/samsung/pcm.c b/sound/soc/samsung/pcm.c new file mode 100644 index 000000000..e859252ae --- /dev/null +++ b/sound/soc/samsung/pcm.c @@ -0,0 +1,607 @@ +// SPDX-License-Identifier: GPL-2.0 +// +// ALSA SoC Audio Layer - S3C PCM-Controller driver +// +// Copyright (c) 2009 Samsung Electronics Co. Ltd +// Author: Jaswinder Singh +// based upon I2S drivers by Ben Dooks. + +#include +#include +#include +#include + +#include +#include + +#include + +#include "dma.h" +#include "pcm.h" + +/*Register Offsets */ +#define S3C_PCM_CTL 0x00 +#define S3C_PCM_CLKCTL 0x04 +#define S3C_PCM_TXFIFO 0x08 +#define S3C_PCM_RXFIFO 0x0C +#define S3C_PCM_IRQCTL 0x10 +#define S3C_PCM_IRQSTAT 0x14 +#define S3C_PCM_FIFOSTAT 0x18 +#define S3C_PCM_CLRINT 0x20 + +/* PCM_CTL Bit-Fields */ +#define S3C_PCM_CTL_TXDIPSTICK_MASK 0x3f +#define S3C_PCM_CTL_TXDIPSTICK_SHIFT 13 +#define S3C_PCM_CTL_RXDIPSTICK_MASK 0x3f +#define S3C_PCM_CTL_RXDIPSTICK_SHIFT 7 +#define S3C_PCM_CTL_TXDMA_EN (0x1 << 6) +#define S3C_PCM_CTL_RXDMA_EN (0x1 << 5) +#define S3C_PCM_CTL_TXMSB_AFTER_FSYNC (0x1 << 4) +#define S3C_PCM_CTL_RXMSB_AFTER_FSYNC (0x1 << 3) +#define S3C_PCM_CTL_TXFIFO_EN (0x1 << 2) +#define S3C_PCM_CTL_RXFIFO_EN (0x1 << 1) +#define S3C_PCM_CTL_ENABLE (0x1 << 0) + +/* PCM_CLKCTL Bit-Fields */ +#define S3C_PCM_CLKCTL_SERCLK_EN (0x1 << 19) +#define S3C_PCM_CLKCTL_SERCLKSEL_PCLK (0x1 << 18) +#define S3C_PCM_CLKCTL_SCLKDIV_MASK 0x1ff +#define S3C_PCM_CLKCTL_SYNCDIV_MASK 0x1ff +#define S3C_PCM_CLKCTL_SCLKDIV_SHIFT 9 +#define S3C_PCM_CLKCTL_SYNCDIV_SHIFT 0 + +/* PCM_TXFIFO Bit-Fields */ +#define S3C_PCM_TXFIFO_DVALID (0x1 << 16) +#define S3C_PCM_TXFIFO_DATA_MSK (0xffff << 0) + +/* PCM_RXFIFO Bit-Fields */ +#define S3C_PCM_RXFIFO_DVALID (0x1 << 16) +#define S3C_PCM_RXFIFO_DATA_MSK (0xffff << 0) + +/* PCM_IRQCTL Bit-Fields */ +#define S3C_PCM_IRQCTL_IRQEN (0x1 << 14) +#define S3C_PCM_IRQCTL_WRDEN (0x1 << 12) +#define S3C_PCM_IRQCTL_TXEMPTYEN (0x1 << 11) +#define S3C_PCM_IRQCTL_TXALMSTEMPTYEN (0x1 << 10) +#define S3C_PCM_IRQCTL_TXFULLEN (0x1 << 9) +#define S3C_PCM_IRQCTL_TXALMSTFULLEN (0x1 << 8) +#define S3C_PCM_IRQCTL_TXSTARVEN (0x1 << 7) +#define S3C_PCM_IRQCTL_TXERROVRFLEN (0x1 << 6) +#define S3C_PCM_IRQCTL_RXEMPTEN (0x1 << 5) +#define S3C_PCM_IRQCTL_RXALMSTEMPTEN (0x1 << 4) +#define S3C_PCM_IRQCTL_RXFULLEN (0x1 << 3) +#define S3C_PCM_IRQCTL_RXALMSTFULLEN (0x1 << 2) +#define S3C_PCM_IRQCTL_RXSTARVEN (0x1 << 1) +#define S3C_PCM_IRQCTL_RXERROVRFLEN (0x1 << 0) + +/* PCM_IRQSTAT Bit-Fields */ +#define S3C_PCM_IRQSTAT_IRQPND (0x1 << 13) +#define S3C_PCM_IRQSTAT_WRD_XFER (0x1 << 12) +#define S3C_PCM_IRQSTAT_TXEMPTY (0x1 << 11) +#define S3C_PCM_IRQSTAT_TXALMSTEMPTY (0x1 << 10) +#define S3C_PCM_IRQSTAT_TXFULL (0x1 << 9) +#define S3C_PCM_IRQSTAT_TXALMSTFULL (0x1 << 8) +#define S3C_PCM_IRQSTAT_TXSTARV (0x1 << 7) +#define S3C_PCM_IRQSTAT_TXERROVRFL (0x1 << 6) +#define S3C_PCM_IRQSTAT_RXEMPT (0x1 << 5) +#define S3C_PCM_IRQSTAT_RXALMSTEMPT (0x1 << 4) +#define S3C_PCM_IRQSTAT_RXFULL (0x1 << 3) +#define S3C_PCM_IRQSTAT_RXALMSTFULL (0x1 << 2) +#define S3C_PCM_IRQSTAT_RXSTARV (0x1 << 1) +#define S3C_PCM_IRQSTAT_RXERROVRFL (0x1 << 0) + +/* PCM_FIFOSTAT Bit-Fields */ +#define S3C_PCM_FIFOSTAT_TXCNT_MSK (0x3f << 14) +#define S3C_PCM_FIFOSTAT_TXFIFOEMPTY (0x1 << 13) +#define S3C_PCM_FIFOSTAT_TXFIFOALMSTEMPTY (0x1 << 12) +#define S3C_PCM_FIFOSTAT_TXFIFOFULL (0x1 << 11) +#define S3C_PCM_FIFOSTAT_TXFIFOALMSTFULL (0x1 << 10) +#define S3C_PCM_FIFOSTAT_RXCNT_MSK (0x3f << 4) +#define S3C_PCM_FIFOSTAT_RXFIFOEMPTY (0x1 << 3) +#define S3C_PCM_FIFOSTAT_RXFIFOALMSTEMPTY (0x1 << 2) +#define S3C_PCM_FIFOSTAT_RXFIFOFULL (0x1 << 1) +#define S3C_PCM_FIFOSTAT_RXFIFOALMSTFULL (0x1 << 0) + +/** + * struct s3c_pcm_info - S3C PCM Controller information + * @lock: Spin lock + * @dev: The parent device passed to use from the probe. + * @regs: The pointer to the device register block. + * @sclk_per_fs: number of sclk per frame sync + * @idleclk: Whether to keep PCMSCLK enabled even when idle (no active xfer) + * @pclk: the PCLK_PCM (pcm) clock pointer + * @cclk: the SCLK_AUDIO (audio-bus) clock pointer + * @dma_playback: DMA information for playback channel. + * @dma_capture: DMA information for capture channel. + */ +struct s3c_pcm_info { + spinlock_t lock; + struct device *dev; + void __iomem *regs; + + unsigned int sclk_per_fs; + + /* Whether to keep PCMSCLK enabled even when idle(no active xfer) */ + unsigned int idleclk; + + struct clk *pclk; + struct clk *cclk; + + struct snd_dmaengine_dai_dma_data *dma_playback; + struct snd_dmaengine_dai_dma_data *dma_capture; +}; + +static struct snd_dmaengine_dai_dma_data s3c_pcm_stereo_out[] = { + [0] = { + .addr_width = 4, + }, + [1] = { + .addr_width = 4, + }, +}; + +static struct snd_dmaengine_dai_dma_data s3c_pcm_stereo_in[] = { + [0] = { + .addr_width = 4, + }, + [1] = { + .addr_width = 4, + }, +}; + +static struct s3c_pcm_info s3c_pcm[2]; + +static void s3c_pcm_snd_txctrl(struct s3c_pcm_info *pcm, int on) +{ + void __iomem *regs = pcm->regs; + u32 ctl, clkctl; + + clkctl = readl(regs + S3C_PCM_CLKCTL); + ctl = readl(regs + S3C_PCM_CTL); + ctl &= ~(S3C_PCM_CTL_TXDIPSTICK_MASK + << S3C_PCM_CTL_TXDIPSTICK_SHIFT); + + if (on) { + ctl |= S3C_PCM_CTL_TXDMA_EN; + ctl |= S3C_PCM_CTL_TXFIFO_EN; + ctl |= S3C_PCM_CTL_ENABLE; + ctl |= (0x4<idleclk) + clkctl |= S3C_PCM_CLKCTL_SERCLK_EN; + } + } + + writel(clkctl, regs + S3C_PCM_CLKCTL); + writel(ctl, regs + S3C_PCM_CTL); +} + +static void s3c_pcm_snd_rxctrl(struct s3c_pcm_info *pcm, int on) +{ + void __iomem *regs = pcm->regs; + u32 ctl, clkctl; + + ctl = readl(regs + S3C_PCM_CTL); + clkctl = readl(regs + S3C_PCM_CLKCTL); + ctl &= ~(S3C_PCM_CTL_RXDIPSTICK_MASK + << S3C_PCM_CTL_RXDIPSTICK_SHIFT); + + if (on) { + ctl |= S3C_PCM_CTL_RXDMA_EN; + ctl |= S3C_PCM_CTL_RXFIFO_EN; + ctl |= S3C_PCM_CTL_ENABLE; + ctl |= (0x20<idleclk) + clkctl |= S3C_PCM_CLKCTL_SERCLK_EN; + } + } + + writel(clkctl, regs + S3C_PCM_CLKCTL); + writel(ctl, regs + S3C_PCM_CTL); +} + +static int s3c_pcm_trigger(struct snd_pcm_substream *substream, int cmd, + struct snd_soc_dai *dai) +{ + struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream); + struct s3c_pcm_info *pcm = snd_soc_dai_get_drvdata(asoc_rtd_to_cpu(rtd, 0)); + unsigned long flags; + + dev_dbg(pcm->dev, "Entered %s\n", __func__); + + switch (cmd) { + case SNDRV_PCM_TRIGGER_START: + case SNDRV_PCM_TRIGGER_RESUME: + case SNDRV_PCM_TRIGGER_PAUSE_RELEASE: + spin_lock_irqsave(&pcm->lock, flags); + + if (substream->stream == SNDRV_PCM_STREAM_CAPTURE) + s3c_pcm_snd_rxctrl(pcm, 1); + else + s3c_pcm_snd_txctrl(pcm, 1); + + spin_unlock_irqrestore(&pcm->lock, flags); + break; + + case SNDRV_PCM_TRIGGER_STOP: + case SNDRV_PCM_TRIGGER_SUSPEND: + case SNDRV_PCM_TRIGGER_PAUSE_PUSH: + spin_lock_irqsave(&pcm->lock, flags); + + if (substream->stream == SNDRV_PCM_STREAM_CAPTURE) + s3c_pcm_snd_rxctrl(pcm, 0); + else + s3c_pcm_snd_txctrl(pcm, 0); + + spin_unlock_irqrestore(&pcm->lock, flags); + break; + + default: + return -EINVAL; + } + + return 0; +} + +static int s3c_pcm_hw_params(struct snd_pcm_substream *substream, + struct snd_pcm_hw_params *params, + struct snd_soc_dai *socdai) +{ + struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream); + struct s3c_pcm_info *pcm = snd_soc_dai_get_drvdata(asoc_rtd_to_cpu(rtd, 0)); + void __iomem *regs = pcm->regs; + struct clk *clk; + int sclk_div, sync_div; + unsigned long flags; + u32 clkctl; + + dev_dbg(pcm->dev, "Entered %s\n", __func__); + + /* Strictly check for sample size */ + switch (params_width(params)) { + case 16: + break; + default: + return -EINVAL; + } + + spin_lock_irqsave(&pcm->lock, flags); + + /* Get hold of the PCMSOURCE_CLK */ + clkctl = readl(regs + S3C_PCM_CLKCTL); + if (clkctl & S3C_PCM_CLKCTL_SERCLKSEL_PCLK) + clk = pcm->pclk; + else + clk = pcm->cclk; + + /* Set the SCLK divider */ + sclk_div = clk_get_rate(clk) / pcm->sclk_per_fs / + params_rate(params) / 2 - 1; + + clkctl &= ~(S3C_PCM_CLKCTL_SCLKDIV_MASK + << S3C_PCM_CLKCTL_SCLKDIV_SHIFT); + clkctl |= ((sclk_div & S3C_PCM_CLKCTL_SCLKDIV_MASK) + << S3C_PCM_CLKCTL_SCLKDIV_SHIFT); + + /* Set the SYNC divider */ + sync_div = pcm->sclk_per_fs - 1; + + clkctl &= ~(S3C_PCM_CLKCTL_SYNCDIV_MASK + << S3C_PCM_CLKCTL_SYNCDIV_SHIFT); + clkctl |= ((sync_div & S3C_PCM_CLKCTL_SYNCDIV_MASK) + << S3C_PCM_CLKCTL_SYNCDIV_SHIFT); + + writel(clkctl, regs + S3C_PCM_CLKCTL); + + spin_unlock_irqrestore(&pcm->lock, flags); + + dev_dbg(pcm->dev, "PCMSOURCE_CLK-%lu SCLK=%ufs SCLK_DIV=%d SYNC_DIV=%d\n", + clk_get_rate(clk), pcm->sclk_per_fs, + sclk_div, sync_div); + + return 0; +} + +static int s3c_pcm_set_fmt(struct snd_soc_dai *cpu_dai, + unsigned int fmt) +{ + struct s3c_pcm_info *pcm = snd_soc_dai_get_drvdata(cpu_dai); + void __iomem *regs = pcm->regs; + unsigned long flags; + int ret = 0; + u32 ctl; + + dev_dbg(pcm->dev, "Entered %s\n", __func__); + + spin_lock_irqsave(&pcm->lock, flags); + + ctl = readl(regs + S3C_PCM_CTL); + + switch (fmt & SND_SOC_DAIFMT_INV_MASK) { + case SND_SOC_DAIFMT_IB_NF: + /* Nothing to do, IB_NF by default */ + break; + default: + dev_err(pcm->dev, "Unsupported clock inversion!\n"); + ret = -EINVAL; + goto exit; + } + + switch (fmt & SND_SOC_DAIFMT_CLOCK_PROVIDER_MASK) { + case SND_SOC_DAIFMT_BP_FP: + /* Nothing to do, Master by default */ + break; + default: + dev_err(pcm->dev, "Unsupported master/slave format!\n"); + ret = -EINVAL; + goto exit; + } + + switch (fmt & SND_SOC_DAIFMT_CLOCK_MASK) { + case SND_SOC_DAIFMT_CONT: + pcm->idleclk = 1; + break; + case SND_SOC_DAIFMT_GATED: + pcm->idleclk = 0; + break; + default: + dev_err(pcm->dev, "Invalid Clock gating request!\n"); + ret = -EINVAL; + goto exit; + } + + switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) { + case SND_SOC_DAIFMT_DSP_A: + ctl |= S3C_PCM_CTL_TXMSB_AFTER_FSYNC; + ctl |= S3C_PCM_CTL_RXMSB_AFTER_FSYNC; + break; + case SND_SOC_DAIFMT_DSP_B: + ctl &= ~S3C_PCM_CTL_TXMSB_AFTER_FSYNC; + ctl &= ~S3C_PCM_CTL_RXMSB_AFTER_FSYNC; + break; + default: + dev_err(pcm->dev, "Unsupported data format!\n"); + ret = -EINVAL; + goto exit; + } + + writel(ctl, regs + S3C_PCM_CTL); + +exit: + spin_unlock_irqrestore(&pcm->lock, flags); + + return ret; +} + +static int s3c_pcm_set_clkdiv(struct snd_soc_dai *cpu_dai, + int div_id, int div) +{ + struct s3c_pcm_info *pcm = snd_soc_dai_get_drvdata(cpu_dai); + + switch (div_id) { + case S3C_PCM_SCLK_PER_FS: + pcm->sclk_per_fs = div; + break; + + default: + return -EINVAL; + } + + return 0; +} + +static int s3c_pcm_set_sysclk(struct snd_soc_dai *cpu_dai, + int clk_id, unsigned int freq, int dir) +{ + struct s3c_pcm_info *pcm = snd_soc_dai_get_drvdata(cpu_dai); + void __iomem *regs = pcm->regs; + u32 clkctl = readl(regs + S3C_PCM_CLKCTL); + + switch (clk_id) { + case S3C_PCM_CLKSRC_PCLK: + clkctl |= S3C_PCM_CLKCTL_SERCLKSEL_PCLK; + break; + + case S3C_PCM_CLKSRC_MUX: + clkctl &= ~S3C_PCM_CLKCTL_SERCLKSEL_PCLK; + + if (clk_get_rate(pcm->cclk) != freq) + clk_set_rate(pcm->cclk, freq); + + break; + + default: + return -EINVAL; + } + + writel(clkctl, regs + S3C_PCM_CLKCTL); + + return 0; +} + +static const struct snd_soc_dai_ops s3c_pcm_dai_ops = { + .set_sysclk = s3c_pcm_set_sysclk, + .set_clkdiv = s3c_pcm_set_clkdiv, + .trigger = s3c_pcm_trigger, + .hw_params = s3c_pcm_hw_params, + .set_fmt = s3c_pcm_set_fmt, +}; + +static int s3c_pcm_dai_probe(struct snd_soc_dai *dai) +{ + struct s3c_pcm_info *pcm = snd_soc_dai_get_drvdata(dai); + + snd_soc_dai_init_dma_data(dai, pcm->dma_playback, pcm->dma_capture); + + return 0; +} + +#define S3C_PCM_RATES SNDRV_PCM_RATE_8000_96000 + +#define S3C_PCM_DAI_DECLARE \ + .symmetric_rate = 1, \ + .probe = s3c_pcm_dai_probe, \ + .ops = &s3c_pcm_dai_ops, \ + .playback = { \ + .channels_min = 2, \ + .channels_max = 2, \ + .rates = S3C_PCM_RATES, \ + .formats = SNDRV_PCM_FMTBIT_S16_LE, \ + }, \ + .capture = { \ + .channels_min = 2, \ + .channels_max = 2, \ + .rates = S3C_PCM_RATES, \ + .formats = SNDRV_PCM_FMTBIT_S16_LE, \ + } + +static struct snd_soc_dai_driver s3c_pcm_dai[] = { + [0] = { + .name = "samsung-pcm.0", + S3C_PCM_DAI_DECLARE, + }, + [1] = { + .name = "samsung-pcm.1", + S3C_PCM_DAI_DECLARE, + }, +}; + +static const struct snd_soc_component_driver s3c_pcm_component = { + .name = "s3c-pcm", + .legacy_dai_naming = 1, +}; + +static int s3c_pcm_dev_probe(struct platform_device *pdev) +{ + struct s3c_pcm_info *pcm; + struct resource *mem_res; + struct s3c_audio_pdata *pcm_pdata; + dma_filter_fn filter; + int ret; + + /* Check for valid device index */ + if ((pdev->id < 0) || pdev->id >= ARRAY_SIZE(s3c_pcm)) { + dev_err(&pdev->dev, "id %d out of range\n", pdev->id); + return -EINVAL; + } + + pcm_pdata = pdev->dev.platform_data; + + if (pcm_pdata && pcm_pdata->cfg_gpio && pcm_pdata->cfg_gpio(pdev)) { + dev_err(&pdev->dev, "Unable to configure gpio\n"); + return -EINVAL; + } + + pcm = &s3c_pcm[pdev->id]; + pcm->dev = &pdev->dev; + + spin_lock_init(&pcm->lock); + + /* Default is 128fs */ + pcm->sclk_per_fs = 128; + + pcm->regs = devm_platform_get_and_ioremap_resource(pdev, 0, &mem_res); + if (IS_ERR(pcm->regs)) + return PTR_ERR(pcm->regs); + + pcm->cclk = devm_clk_get(&pdev->dev, "audio-bus"); + if (IS_ERR(pcm->cclk)) { + dev_err(&pdev->dev, "failed to get audio-bus clock\n"); + return PTR_ERR(pcm->cclk); + } + ret = clk_prepare_enable(pcm->cclk); + if (ret) + return ret; + + /* record our pcm structure for later use in the callbacks */ + dev_set_drvdata(&pdev->dev, pcm); + + pcm->pclk = devm_clk_get(&pdev->dev, "pcm"); + if (IS_ERR(pcm->pclk)) { + dev_err(&pdev->dev, "failed to get pcm clock\n"); + ret = PTR_ERR(pcm->pclk); + goto err_dis_cclk; + } + ret = clk_prepare_enable(pcm->pclk); + if (ret) + goto err_dis_cclk; + + s3c_pcm_stereo_in[pdev->id].addr = mem_res->start + S3C_PCM_RXFIFO; + s3c_pcm_stereo_out[pdev->id].addr = mem_res->start + S3C_PCM_TXFIFO; + + filter = NULL; + if (pcm_pdata) { + s3c_pcm_stereo_in[pdev->id].filter_data = pcm_pdata->dma_capture; + s3c_pcm_stereo_out[pdev->id].filter_data = pcm_pdata->dma_playback; + filter = pcm_pdata->dma_filter; + } + + pcm->dma_capture = &s3c_pcm_stereo_in[pdev->id]; + pcm->dma_playback = &s3c_pcm_stereo_out[pdev->id]; + + ret = samsung_asoc_dma_platform_register(&pdev->dev, filter, + NULL, NULL, NULL); + if (ret) { + dev_err(&pdev->dev, "failed to get register DMA: %d\n", ret); + goto err_dis_pclk; + } + + pm_runtime_enable(&pdev->dev); + + ret = devm_snd_soc_register_component(&pdev->dev, &s3c_pcm_component, + &s3c_pcm_dai[pdev->id], 1); + if (ret != 0) { + dev_err(&pdev->dev, "failed to get register DAI: %d\n", ret); + goto err_dis_pm; + } + + return 0; + +err_dis_pm: + pm_runtime_disable(&pdev->dev); +err_dis_pclk: + clk_disable_unprepare(pcm->pclk); +err_dis_cclk: + clk_disable_unprepare(pcm->cclk); + return ret; +} + +static int s3c_pcm_dev_remove(struct platform_device *pdev) +{ + struct s3c_pcm_info *pcm = &s3c_pcm[pdev->id]; + + pm_runtime_disable(&pdev->dev); + clk_disable_unprepare(pcm->cclk); + clk_disable_unprepare(pcm->pclk); + + return 0; +} + +static struct platform_driver s3c_pcm_driver = { + .probe = s3c_pcm_dev_probe, + .remove = s3c_pcm_dev_remove, + .driver = { + .name = "samsung-pcm", + }, +}; + +module_platform_driver(s3c_pcm_driver); + +/* Module information */ +MODULE_AUTHOR("Jaswinder Singh, "); +MODULE_DESCRIPTION("S3C PCM Controller Driver"); +MODULE_LICENSE("GPL"); +MODULE_ALIAS("platform:samsung-pcm"); -- cgit v1.2.3