Merge tag 'net-next-6.3' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-nextgrafted

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().
  ...

1 files changed, 526 insertions, 0 deletions

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 <linux/platform_device.h>
+#include <linux/module.h>
+#include <linux/err.h>
+#include <linux/io.h>
+#include <linux/pm_runtime.h>
+#include <sound/pcm_params.h>
+#include <sound/soc.h>
+#include <sound/soc-dai.h>
+
+#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);