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/amd/raven/acp3x-pcm-dma.c | 526 ++++++++++++++++++++++++++++++++++++ 1 file changed, 526 insertions(+) create mode 100644 sound/soc/amd/raven/acp3x-pcm-dma.c (limited to 'sound/soc/amd/raven/acp3x-pcm-dma.c') diff --git a/sound/soc/amd/raven/acp3x-pcm-dma.c b/sound/soc/amd/raven/acp3x-pcm-dma.c new file mode 100644 index 000000000..6aec11cf0 --- /dev/null +++ b/sound/soc/amd/raven/acp3x-pcm-dma.c @@ -0,0 +1,526 @@ +// SPDX-License-Identifier: GPL-2.0+ +// +// AMD ALSA SoC PCM Driver +// +//Copyright 2016 Advanced Micro Devices, Inc. + +#include +#include +#include +#include +#include +#include +#include +#include + +#include "acp3x.h" + +#define DRV_NAME "acp3x_rv_i2s_dma" + +static const struct snd_pcm_hardware acp3x_pcm_hardware_playback = { + .info = SNDRV_PCM_INFO_INTERLEAVED | + SNDRV_PCM_INFO_BLOCK_TRANSFER | + SNDRV_PCM_INFO_BATCH | + SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_MMAP_VALID | + SNDRV_PCM_INFO_PAUSE | SNDRV_PCM_INFO_RESUME, + .formats = SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S8 | + SNDRV_PCM_FMTBIT_U8 | SNDRV_PCM_FMTBIT_S32_LE, + .channels_min = 2, + .channels_max = 8, + .rates = SNDRV_PCM_RATE_8000_96000, + .rate_min = 8000, + .rate_max = 96000, + .buffer_bytes_max = PLAYBACK_MAX_NUM_PERIODS * PLAYBACK_MAX_PERIOD_SIZE, + .period_bytes_min = PLAYBACK_MIN_PERIOD_SIZE, + .period_bytes_max = PLAYBACK_MAX_PERIOD_SIZE, + .periods_min = PLAYBACK_MIN_NUM_PERIODS, + .periods_max = PLAYBACK_MAX_NUM_PERIODS, +}; + +static const struct snd_pcm_hardware acp3x_pcm_hardware_capture = { + .info = SNDRV_PCM_INFO_INTERLEAVED | + SNDRV_PCM_INFO_BLOCK_TRANSFER | + SNDRV_PCM_INFO_BATCH | + SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_MMAP_VALID | + SNDRV_PCM_INFO_PAUSE | SNDRV_PCM_INFO_RESUME, + .formats = SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S8 | + SNDRV_PCM_FMTBIT_U8 | SNDRV_PCM_FMTBIT_S32_LE, + .channels_min = 2, + .channels_max = 2, + .rates = SNDRV_PCM_RATE_8000_48000, + .rate_min = 8000, + .rate_max = 48000, + .buffer_bytes_max = CAPTURE_MAX_NUM_PERIODS * CAPTURE_MAX_PERIOD_SIZE, + .period_bytes_min = CAPTURE_MIN_PERIOD_SIZE, + .period_bytes_max = CAPTURE_MAX_PERIOD_SIZE, + .periods_min = CAPTURE_MIN_NUM_PERIODS, + .periods_max = CAPTURE_MAX_NUM_PERIODS, +}; + +static irqreturn_t i2s_irq_handler(int irq, void *dev_id) +{ + struct i2s_dev_data *rv_i2s_data; + u16 play_flag, cap_flag; + u32 val; + + rv_i2s_data = dev_id; + if (!rv_i2s_data) + return IRQ_NONE; + + play_flag = 0; + cap_flag = 0; + val = rv_readl(rv_i2s_data->acp3x_base + mmACP_EXTERNAL_INTR_STAT); + if ((val & BIT(BT_TX_THRESHOLD)) && rv_i2s_data->play_stream) { + rv_writel(BIT(BT_TX_THRESHOLD), rv_i2s_data->acp3x_base + + mmACP_EXTERNAL_INTR_STAT); + snd_pcm_period_elapsed(rv_i2s_data->play_stream); + play_flag = 1; + } + if ((val & BIT(I2S_TX_THRESHOLD)) && + rv_i2s_data->i2ssp_play_stream) { + rv_writel(BIT(I2S_TX_THRESHOLD), + rv_i2s_data->acp3x_base + mmACP_EXTERNAL_INTR_STAT); + snd_pcm_period_elapsed(rv_i2s_data->i2ssp_play_stream); + play_flag = 1; + } + + if ((val & BIT(BT_RX_THRESHOLD)) && rv_i2s_data->capture_stream) { + rv_writel(BIT(BT_RX_THRESHOLD), rv_i2s_data->acp3x_base + + mmACP_EXTERNAL_INTR_STAT); + snd_pcm_period_elapsed(rv_i2s_data->capture_stream); + cap_flag = 1; + } + if ((val & BIT(I2S_RX_THRESHOLD)) && + rv_i2s_data->i2ssp_capture_stream) { + rv_writel(BIT(I2S_RX_THRESHOLD), + rv_i2s_data->acp3x_base + mmACP_EXTERNAL_INTR_STAT); + snd_pcm_period_elapsed(rv_i2s_data->i2ssp_capture_stream); + cap_flag = 1; + } + + if (play_flag | cap_flag) + return IRQ_HANDLED; + else + return IRQ_NONE; +} + +static void config_acp3x_dma(struct i2s_stream_instance *rtd, int direction) +{ + u16 page_idx; + u32 low, high, val, acp_fifo_addr, reg_fifo_addr; + u32 reg_dma_size, reg_fifo_size; + dma_addr_t addr; + + addr = rtd->dma_addr; + + if (direction == SNDRV_PCM_STREAM_PLAYBACK) { + switch (rtd->i2s_instance) { + case I2S_BT_INSTANCE: + val = ACP_SRAM_BT_PB_PTE_OFFSET; + break; + case I2S_SP_INSTANCE: + default: + val = ACP_SRAM_SP_PB_PTE_OFFSET; + } + } else { + switch (rtd->i2s_instance) { + case I2S_BT_INSTANCE: + val = ACP_SRAM_BT_CP_PTE_OFFSET; + break; + case I2S_SP_INSTANCE: + default: + val = ACP_SRAM_SP_CP_PTE_OFFSET; + } + } + /* Group Enable */ + rv_writel(ACP_SRAM_PTE_OFFSET | BIT(31), rtd->acp3x_base + + mmACPAXI2AXI_ATU_BASE_ADDR_GRP_1); + rv_writel(PAGE_SIZE_4K_ENABLE, rtd->acp3x_base + + mmACPAXI2AXI_ATU_PAGE_SIZE_GRP_1); + + for (page_idx = 0; page_idx < rtd->num_pages; page_idx++) { + /* Load the low address of page int ACP SRAM through SRBM */ + low = lower_32_bits(addr); + high = upper_32_bits(addr); + + rv_writel(low, rtd->acp3x_base + mmACP_SCRATCH_REG_0 + val); + high |= BIT(31); + rv_writel(high, rtd->acp3x_base + mmACP_SCRATCH_REG_0 + val + + 4); + /* Move to next physically contiguous page */ + val += 8; + addr += PAGE_SIZE; + } + + if (direction == SNDRV_PCM_STREAM_PLAYBACK) { + switch (rtd->i2s_instance) { + case I2S_BT_INSTANCE: + reg_dma_size = mmACP_BT_TX_DMA_SIZE; + acp_fifo_addr = ACP_SRAM_PTE_OFFSET + + BT_PB_FIFO_ADDR_OFFSET; + reg_fifo_addr = mmACP_BT_TX_FIFOADDR; + reg_fifo_size = mmACP_BT_TX_FIFOSIZE; + rv_writel(I2S_BT_TX_MEM_WINDOW_START, + rtd->acp3x_base + mmACP_BT_TX_RINGBUFADDR); + break; + + case I2S_SP_INSTANCE: + default: + reg_dma_size = mmACP_I2S_TX_DMA_SIZE; + acp_fifo_addr = ACP_SRAM_PTE_OFFSET + + SP_PB_FIFO_ADDR_OFFSET; + reg_fifo_addr = mmACP_I2S_TX_FIFOADDR; + reg_fifo_size = mmACP_I2S_TX_FIFOSIZE; + rv_writel(I2S_SP_TX_MEM_WINDOW_START, + rtd->acp3x_base + mmACP_I2S_TX_RINGBUFADDR); + } + } else { + switch (rtd->i2s_instance) { + case I2S_BT_INSTANCE: + reg_dma_size = mmACP_BT_RX_DMA_SIZE; + acp_fifo_addr = ACP_SRAM_PTE_OFFSET + + BT_CAPT_FIFO_ADDR_OFFSET; + reg_fifo_addr = mmACP_BT_RX_FIFOADDR; + reg_fifo_size = mmACP_BT_RX_FIFOSIZE; + rv_writel(I2S_BT_RX_MEM_WINDOW_START, + rtd->acp3x_base + mmACP_BT_RX_RINGBUFADDR); + break; + + case I2S_SP_INSTANCE: + default: + reg_dma_size = mmACP_I2S_RX_DMA_SIZE; + acp_fifo_addr = ACP_SRAM_PTE_OFFSET + + SP_CAPT_FIFO_ADDR_OFFSET; + reg_fifo_addr = mmACP_I2S_RX_FIFOADDR; + reg_fifo_size = mmACP_I2S_RX_FIFOSIZE; + rv_writel(I2S_SP_RX_MEM_WINDOW_START, + rtd->acp3x_base + mmACP_I2S_RX_RINGBUFADDR); + } + } + rv_writel(DMA_SIZE, rtd->acp3x_base + reg_dma_size); + rv_writel(acp_fifo_addr, rtd->acp3x_base + reg_fifo_addr); + rv_writel(FIFO_SIZE, rtd->acp3x_base + reg_fifo_size); + rv_writel(BIT(I2S_RX_THRESHOLD) | BIT(BT_RX_THRESHOLD) + | BIT(I2S_TX_THRESHOLD) | BIT(BT_TX_THRESHOLD), + rtd->acp3x_base + mmACP_EXTERNAL_INTR_CNTL); +} + +static int acp3x_dma_open(struct snd_soc_component *component, + struct snd_pcm_substream *substream) +{ + struct snd_pcm_runtime *runtime; + struct snd_soc_pcm_runtime *prtd; + struct i2s_dev_data *adata; + struct i2s_stream_instance *i2s_data; + int ret; + + runtime = substream->runtime; + prtd = asoc_substream_to_rtd(substream); + component = snd_soc_rtdcom_lookup(prtd, DRV_NAME); + adata = dev_get_drvdata(component->dev); + i2s_data = kzalloc(sizeof(*i2s_data), GFP_KERNEL); + if (!i2s_data) + return -EINVAL; + + if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) + runtime->hw = acp3x_pcm_hardware_playback; + else + runtime->hw = acp3x_pcm_hardware_capture; + + ret = snd_pcm_hw_constraint_integer(runtime, + SNDRV_PCM_HW_PARAM_PERIODS); + if (ret < 0) { + dev_err(component->dev, "set integer constraint failed\n"); + kfree(i2s_data); + return ret; + } + + i2s_data->acp3x_base = adata->acp3x_base; + runtime->private_data = i2s_data; + return ret; +} + + +static int acp3x_dma_hw_params(struct snd_soc_component *component, + struct snd_pcm_substream *substream, + struct snd_pcm_hw_params *params) +{ + struct i2s_stream_instance *rtd; + struct snd_soc_pcm_runtime *prtd; + struct snd_soc_card *card; + struct acp3x_platform_info *pinfo; + struct i2s_dev_data *adata; + u64 size; + + prtd = asoc_substream_to_rtd(substream); + card = prtd->card; + pinfo = snd_soc_card_get_drvdata(card); + adata = dev_get_drvdata(component->dev); + rtd = substream->runtime->private_data; + if (!rtd) + return -EINVAL; + + if (pinfo) { + if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) { + rtd->i2s_instance = pinfo->play_i2s_instance; + switch (rtd->i2s_instance) { + case I2S_BT_INSTANCE: + adata->play_stream = substream; + break; + case I2S_SP_INSTANCE: + default: + adata->i2ssp_play_stream = substream; + } + } else { + rtd->i2s_instance = pinfo->cap_i2s_instance; + switch (rtd->i2s_instance) { + case I2S_BT_INSTANCE: + adata->capture_stream = substream; + break; + case I2S_SP_INSTANCE: + default: + adata->i2ssp_capture_stream = substream; + } + } + } else { + pr_err("pinfo failed\n"); + } + size = params_buffer_bytes(params); + rtd->dma_addr = substream->runtime->dma_addr; + rtd->num_pages = (PAGE_ALIGN(size) >> PAGE_SHIFT); + config_acp3x_dma(rtd, substream->stream); + return 0; +} + +static snd_pcm_uframes_t acp3x_dma_pointer(struct snd_soc_component *component, + struct snd_pcm_substream *substream) +{ + struct i2s_stream_instance *rtd; + u32 pos; + u32 buffersize; + u64 bytescount; + + rtd = substream->runtime->private_data; + + buffersize = frames_to_bytes(substream->runtime, + substream->runtime->buffer_size); + bytescount = acp_get_byte_count(rtd, substream->stream); + if (bytescount > rtd->bytescount) + bytescount -= rtd->bytescount; + pos = do_div(bytescount, buffersize); + return bytes_to_frames(substream->runtime, pos); +} + +static int acp3x_dma_new(struct snd_soc_component *component, + struct snd_soc_pcm_runtime *rtd) +{ + struct device *parent = component->dev->parent; + snd_pcm_set_managed_buffer_all(rtd->pcm, SNDRV_DMA_TYPE_DEV, + parent, MIN_BUFFER, MAX_BUFFER); + return 0; +} + +static int acp3x_dma_close(struct snd_soc_component *component, + struct snd_pcm_substream *substream) +{ + struct snd_soc_pcm_runtime *prtd; + struct i2s_dev_data *adata; + struct i2s_stream_instance *ins; + + prtd = asoc_substream_to_rtd(substream); + component = snd_soc_rtdcom_lookup(prtd, DRV_NAME); + adata = dev_get_drvdata(component->dev); + ins = substream->runtime->private_data; + if (!ins) + return -EINVAL; + + if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) { + switch (ins->i2s_instance) { + case I2S_BT_INSTANCE: + adata->play_stream = NULL; + break; + case I2S_SP_INSTANCE: + default: + adata->i2ssp_play_stream = NULL; + } + } else { + switch (ins->i2s_instance) { + case I2S_BT_INSTANCE: + adata->capture_stream = NULL; + break; + case I2S_SP_INSTANCE: + default: + adata->i2ssp_capture_stream = NULL; + } + } + + return 0; +} + +static const struct snd_soc_component_driver acp3x_i2s_component = { + .name = DRV_NAME, + .open = acp3x_dma_open, + .close = acp3x_dma_close, + .hw_params = acp3x_dma_hw_params, + .pointer = acp3x_dma_pointer, + .pcm_construct = acp3x_dma_new, +}; + +static int acp3x_audio_probe(struct platform_device *pdev) +{ + struct resource *res; + struct i2s_dev_data *adata; + unsigned int irqflags; + int status; + + if (!pdev->dev.platform_data) { + dev_err(&pdev->dev, "platform_data not retrieved\n"); + return -ENODEV; + } + irqflags = *((unsigned int *)(pdev->dev.platform_data)); + + res = platform_get_resource(pdev, IORESOURCE_MEM, 0); + if (!res) { + dev_err(&pdev->dev, "IORESOURCE_MEM FAILED\n"); + return -ENODEV; + } + + adata = devm_kzalloc(&pdev->dev, sizeof(*adata), GFP_KERNEL); + if (!adata) + return -ENOMEM; + + adata->acp3x_base = devm_ioremap(&pdev->dev, res->start, + resource_size(res)); + if (!adata->acp3x_base) + return -ENOMEM; + + status = platform_get_irq(pdev, 0); + if (status < 0) + return status; + adata->i2s_irq = status; + + dev_set_drvdata(&pdev->dev, adata); + status = devm_snd_soc_register_component(&pdev->dev, + &acp3x_i2s_component, + NULL, 0); + if (status) { + dev_err(&pdev->dev, "Fail to register acp i2s component\n"); + return -ENODEV; + } + status = devm_request_irq(&pdev->dev, adata->i2s_irq, i2s_irq_handler, + irqflags, "ACP3x_I2S_IRQ", adata); + if (status) { + dev_err(&pdev->dev, "ACP3x I2S IRQ request failed\n"); + return -ENODEV; + } + + pm_runtime_set_autosuspend_delay(&pdev->dev, 2000); + pm_runtime_use_autosuspend(&pdev->dev); + pm_runtime_enable(&pdev->dev); + pm_runtime_allow(&pdev->dev); + return 0; +} + +static int acp3x_audio_remove(struct platform_device *pdev) +{ + pm_runtime_disable(&pdev->dev); + return 0; +} + +static int acp3x_resume(struct device *dev) +{ + struct i2s_dev_data *adata; + u32 val, reg_val, frmt_val; + + reg_val = 0; + frmt_val = 0; + adata = dev_get_drvdata(dev); + + if (adata->play_stream && adata->play_stream->runtime) { + struct i2s_stream_instance *rtd = + adata->play_stream->runtime->private_data; + config_acp3x_dma(rtd, SNDRV_PCM_STREAM_PLAYBACK); + switch (rtd->i2s_instance) { + case I2S_BT_INSTANCE: + reg_val = mmACP_BTTDM_ITER; + frmt_val = mmACP_BTTDM_TXFRMT; + break; + case I2S_SP_INSTANCE: + default: + reg_val = mmACP_I2STDM_ITER; + frmt_val = mmACP_I2STDM_TXFRMT; + } + rv_writel((rtd->xfer_resolution << 3), + rtd->acp3x_base + reg_val); + } + if (adata->capture_stream && adata->capture_stream->runtime) { + struct i2s_stream_instance *rtd = + adata->capture_stream->runtime->private_data; + config_acp3x_dma(rtd, SNDRV_PCM_STREAM_CAPTURE); + switch (rtd->i2s_instance) { + case I2S_BT_INSTANCE: + reg_val = mmACP_BTTDM_IRER; + frmt_val = mmACP_BTTDM_RXFRMT; + break; + case I2S_SP_INSTANCE: + default: + reg_val = mmACP_I2STDM_IRER; + frmt_val = mmACP_I2STDM_RXFRMT; + } + rv_writel((rtd->xfer_resolution << 3), + rtd->acp3x_base + reg_val); + } + if (adata->tdm_mode == TDM_ENABLE) { + rv_writel(adata->tdm_fmt, adata->acp3x_base + frmt_val); + val = rv_readl(adata->acp3x_base + reg_val); + rv_writel(val | 0x2, adata->acp3x_base + reg_val); + } + rv_writel(1, adata->acp3x_base + mmACP_EXTERNAL_INTR_ENB); + return 0; +} + + +static int acp3x_pcm_runtime_suspend(struct device *dev) +{ + struct i2s_dev_data *adata; + + adata = dev_get_drvdata(dev); + + rv_writel(0, adata->acp3x_base + mmACP_EXTERNAL_INTR_ENB); + + return 0; +} + +static int acp3x_pcm_runtime_resume(struct device *dev) +{ + struct i2s_dev_data *adata; + + adata = dev_get_drvdata(dev); + + rv_writel(1, adata->acp3x_base + mmACP_EXTERNAL_INTR_ENB); + return 0; +} + +static const struct dev_pm_ops acp3x_pm_ops = { + .runtime_suspend = acp3x_pcm_runtime_suspend, + .runtime_resume = acp3x_pcm_runtime_resume, + .resume = acp3x_resume, +}; + +static struct platform_driver acp3x_dma_driver = { + .probe = acp3x_audio_probe, + .remove = acp3x_audio_remove, + .driver = { + .name = "acp3x_rv_i2s_dma", + .pm = &acp3x_pm_ops, + }, +}; + +module_platform_driver(acp3x_dma_driver); + +MODULE_AUTHOR("Vishnuvardhanrao.Ravulapati@amd.com"); +MODULE_AUTHOR("Maruthi.Bayyavarapu@amd.com"); +MODULE_AUTHOR("Vijendar.Mukunda@amd.com"); +MODULE_DESCRIPTION("AMD ACP 3.x PCM Driver"); +MODULE_LICENSE("GPL v2"); +MODULE_ALIAS("platform:"DRV_NAME); -- cgit v1.2.3