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From: sidraya.bj@pathpartnertech.com
To: gregkh@linuxfoundation.org, linux-staging@lists.linux.dev,
	linux-kernel@vger.kernel.org
Cc: prashanth.ka@pathpartnertech.com, praneeth@ti.com,
	mchehab@kernel.org, linux-media@vger.kernel.org,
	praveen.ap@pathpartnertech.com,
	Sidraya <sidraya.bj@pathpartnertech.com>
Subject: [PATCH 04/30] v4l: vxd-dec: Add vxd helper library
Date: Wed, 18 Aug 2021 19:40:11 +0530	[thread overview]
Message-ID: <20210818141037.19990-5-sidraya.bj@pathpartnertech.com> (raw)
In-Reply-To: <20210818141037.19990-1-sidraya.bj@pathpartnertech.com>

From: Sidraya <sidraya.bj@pathpartnertech.com>

The vxd helper provides the functionality for firmware blob preparation
and loading, power management (core reset, etc.), firmware messaging,
interrupt handling, managing the hardware status, and error handling.

The vxd helper also interacts with the memory manager helper to create
a context for each stream and associate it with the mmu context. The
common mappings are done during this creation for the firmware and
rendec buffers.

Signed-off-by: Buddy Liong <buddy.liong@ti.com>
Signed-off-by: Angela Stegmaier <angelabaker@ti.com>
Signed-off-by: Sidraya <sidraya.bj@pathpartnertech.com>
---
 MAINTAINERS                                   |    4 +
 .../media/vxd/decoder/img_dec_common.h        |  278 +++
 drivers/staging/media/vxd/decoder/vxd_pvdec.c | 1745 +++++++++++++++++
 .../media/vxd/decoder/vxd_pvdec_priv.h        |  126 ++
 .../media/vxd/decoder/vxd_pvdec_regs.h        |  779 ++++++++
 5 files changed, 2932 insertions(+)
 create mode 100644 drivers/staging/media/vxd/decoder/img_dec_common.h
 create mode 100644 drivers/staging/media/vxd/decoder/vxd_pvdec.c
 create mode 100644 drivers/staging/media/vxd/decoder/vxd_pvdec_priv.h
 create mode 100644 drivers/staging/media/vxd/decoder/vxd_pvdec_regs.h

diff --git a/MAINTAINERS b/MAINTAINERS
index 150272927839..0f8154b69a91 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -19542,6 +19542,10 @@ F:	drivers/staging/media/vxd/common/img_mem_man.h
 F:	drivers/staging/media/vxd/common/img_mem_unified.c
 F:	drivers/staging/media/vxd/common/imgmmu.c
 F:	drivers/staging/media/vxd/common/imgmmu.h
+F:	drivers/staging/media/vxd/decoder/img_dec_common.h
+F:	drivers/staging/media/vxd/decoder/vxd_pvdec.c
+F:	drivers/staging/media/vxd/decoder/vxd_pvdec_priv.h
+F:	drivers/staging/media/vxd/decoder/vxd_pvdec_regs.h
 
 VIDEO I2C POLLING DRIVER
 M:	Matt Ranostay <matt.ranostay@konsulko.com>
diff --git a/drivers/staging/media/vxd/decoder/img_dec_common.h b/drivers/staging/media/vxd/decoder/img_dec_common.h
new file mode 100644
index 000000000000..7bb3bd6d6e78
--- /dev/null
+++ b/drivers/staging/media/vxd/decoder/img_dec_common.h
@@ -0,0 +1,278 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * IMG DEC common header
+ *
+ * Copyright (c) Imagination Technologies Ltd.
+ * Copyright (c) 2021 exas Instruments Incorporated - http://www.ti.com/
+ *
+ * Authors:
+ *	Amit Makani <amit.makani@ti.com>
+ *
+ * Re-written for upstreamimg
+ *	Sidraya Jayagond <sidraya.bj@pathpartnertech.com>
+ *	Prashanth Kumar Amai <prashanth.ka@pathpartnertech.com>
+ */
+
+#ifndef _IMG_DEC_COMMON_H
+#define _IMG_DEC_COMMON_H
+
+#include <linux/types.h>
+
+#define VXD_MAX_PIPES 2
+#define MAX_DST_BUFFERS 32
+
+/* Helpers for parsing core properties. Based on HW registers layout. */
+#define VXD_GET_BITS(v, lb, rb, type) \
+	({                                \
+		type __rb = (rb);                                       \
+		(((v) >> (__rb)) & ((1 << ((lb) - __rb + 1)) - 1)); })
+#define VXD_GET_BIT(v, b) (((v) >> (b)) & 1)
+
+/* Get major core revision. */
+#define VXD_MAJ_REV(props) (VXD_GET_BITS((props).core_rev, 23, 16, unsigned int))
+/* Get minor core revision. */
+#define VXD_MIN_REV(props) (VXD_GET_BITS((props).core_rev, 15, 8, unsigned int))
+/* Get maint core revision. */
+#define VXD_MAINT_REV(props) (VXD_GET_BITS((props).core_rev, 7, 0, unsigned int))
+/* Get number of entropy pipes available (HEVC). */
+#define VXD_NUM_ENT_PIPES(props) ((props).pvdec_core_id & 0xF)
+/* Get number of pixel pipes available (other standards). */
+#define VXD_NUM_PIX_PIPES(props) (((props).pvdec_core_id & 0xF0) >> 4)
+/* Get number of bits used by external memory interface. */
+#define VXD_EXTRN_ADDR_WIDTH(props) ((((props).mmu_config0 & 0xF0) >> 4) + 32)
+
+/* Check whether specific standard is supported by the pixel pipe. */
+#define VXD_HAS_MPEG2(props, pipe) VXD_GET_BIT(props.pixel_pipe_cfg[pipe], 0)
+#define VXD_HAS_MPEG4(props, pipe) VXD_GET_BIT(props.pixel_pipe_cfg[pipe], 1)
+#define VXD_HAS_H264(props, pipe) VXD_GET_BIT(props.pixel_pipe_cfg[pipe], 2)
+#define VXD_HAS_VC1(props, pipe) VXD_GET_BIT(props.pixel_pipe_cfg[pipe], 3)
+#define VXD_HAS_WMV9(props, pipe) VXD_GET_BIT(props.pixel_pipe_cfg[pipe], 4)
+#define VXD_HAS_JPEG(props, pipe) VXD_GET_BIT(props.pixel_pipe_cfg[pipe], 5)
+#define VXD_HAS_MPEG4_DATA_PART(props, pipe) \
+	VXD_GET_BIT(props.pixel_pipe_cfg[pipe], 6)
+#define VXD_HAS_AVS(props, pipe) VXD_GET_BIT(props.pixel_pipe_cfg[pipe], 7)
+#define VXD_HAS_REAL(props, pipe) VXD_GET_BIT(props.pixel_pipe_cfg[pipe], 8)
+#define VXD_HAS_VP6(props, pipe) VXD_GET_BIT(props.pixel_pipe_cfg[pipe], 9)
+#define VXD_HAS_VP8(props, pipe) VXD_GET_BIT(props.pixel_pipe_cfg[pipe], 10)
+#define VXD_HAS_SORENSON(props, pipe) \
+	VXD_GET_BIT(props.pixel_pipe_cfg[pipe], 11)
+#define VXD_HAS_HEVC(props, pipe) VXD_GET_BIT(props.pixel_pipe_cfg[pipe], 22)
+
+/* Check whether specific feature is supported by the pixel pipe */
+
+/*
+ * Max picture size for HEVC still picture profile is 64k wide and/or 64k
+ * high.
+ */
+#define VXD_HAS_HEVC_64K_STILL(props, pipe) \
+	(VXD_GET_BIT((props).pixel_misc_cfg[pipe], 24))
+
+/* Pixel processing pipe index. */
+#define VXD_PIX_PIPE_ID(props, pipe) \
+	(VXD_GET_BITS((props).pixel_misc_cfg[pipe], 18, 16, unsigned int))
+
+/* Number of stream supported by the pixel pipe DMAC and shift register. */
+#define VXD_PIX_NUM_STRS(props, pipe) \
+	(VXD_GET_BITS((props).pixel_misc_cfg[pipe], 13, 12, unsigned int) + 1)
+
+/* Is scaling supported. */
+#define VXD_HAS_SCALING(props, pipe) \
+	(VXD_GET_BIT((props).pixel_misc_cfg[pipe], 9))
+
+/* Is rotation supported. */
+#define VXD_HAS_ROTATION(props, pipe) \
+	(VXD_GET_BIT((props).pixel_misc_cfg[pipe], 8))
+
+/* Are HEVC range extensions supported. */
+#define VXD_HAS_HEVC_REXT(props, pipe) \
+	(VXD_GET_BIT((props).pixel_misc_cfg[pipe], 7))
+
+/* Maximum bit depth supported by the pipe. */
+#define VXD_MAX_BIT_DEPTH(props, pipe) \
+	(VXD_GET_BITS((props).pixel_misc_cfg[pipe], 6, 4, unsigned int) + 8)
+
+/*
+ * Maximum chroma fomar supported by the pipe in HEVC mode.
+ * 0x1 - 4:2:0
+ * 0x2 - 4:2:2
+ * 0x3 - 4:4:4
+ */
+#define VXD_MAX_HEVC_CHROMA_FMT(props, pipe) \
+	(VXD_GET_BITS((props).pixel_misc_cfg[pipe], 3, 2, unsigned int))
+
+/*
+ * Maximum chroma format supported by the pipe in H264 mode.
+ * 0x1 - 4:2:0
+ * 0x2 - 4:2:2
+ * 0x3 - 4:4:4
+ */
+#define VXD_MAX_H264_CHROMA_FMT(props, pipe) \
+	(VXD_GET_BITS((props).pixel_misc_cfg[pipe], 1, 0, unsigned int))
+
+/*
+ * Maximum frame width and height supported in MSVDX pipeline.
+ */
+#define VXD_MAX_WIDTH_MSVDX(props) \
+	(2 << (VXD_GET_BITS((props).pixel_max_frame_cfg, 4, 0, unsigned int)))
+#define VXD_MAX_HEIGHT_MSVDX(props) \
+	(2 << (VXD_GET_BITS((props).pixel_max_frame_cfg, 12, 8, unsigned int)))
+
+/*
+ * Maximum frame width and height supported in PVDEC pipeline.
+ */
+#define VXD_MAX_WIDTH_PVDEC(props) \
+	(2 << (VXD_GET_BITS((props).pixel_max_frame_cfg, 20, 16, unsigned int)))
+#define VXD_MAX_HEIGHT_PVDEC(props) \
+	(2 << (VXD_GET_BITS((props).pixel_max_frame_cfg, 28, 24, unsigned int)))
+
+#define PVDEC_COMMS_RAM_OFFSET      0x00002000
+#define PVDEC_COMMS_RAM_SIZE        0x00001000
+#define PVDEC_ENTROPY_OFFSET        0x00003000
+#define PVDEC_ENTROPY_SIZE          0x1FF
+#define PVDEC_VEC_BE_OFFSET         0x00005000
+#define PVDEC_VEC_BE_SIZE           0x3FF
+#define PVDEC_VEC_BE_CODEC_OFFSET   0x00005400
+#define MSVDX_VEC_OFFSET            0x00006000
+#define MSVDX_VEC_SIZE              0x7FF
+#define MSVDX_CMD_OFFSET            0x00007000
+
+/*
+ * Virtual memory heap address ranges for tiled
+ * and non-tiled buffers. Addresses within each
+ * range should be assigned to the appropriate
+ * buffers by the UM driver and mapped into the
+ * device using the corresponding KM driver ioctl.
+ */
+#define PVDEC_HEAP_UNTILED_START    0x00400000ul
+#define PVDEC_HEAP_UNTILED_SIZE     0x3FC00000ul
+#define PVDEC_HEAP_TILE512_START    0x40000000ul
+#define PVDEC_HEAP_TILE512_SIZE     0x10000000ul
+#define PVDEC_HEAP_TILE1024_START   0x50000000ul
+#define PVDEC_HEAP_TILE1024_SIZE    0x20000000ul
+#define PVDEC_HEAP_TILE2048_START   0x70000000ul
+#define PVDEC_HEAP_TILE2048_SIZE    0x30000000ul
+#define PVDEC_HEAP_TILE4096_START   0xA0000000ul
+#define PVDEC_HEAP_TILE4096_SIZE    0x30000000ul
+#define PVDEC_HEAP_BITSTREAM_START  0xD2000000ul
+#define PVDEC_HEAP_BITSTREAM_SIZE   0x0A000000ul
+#define PVDEC_HEAP_STREAM_START     0xE4000000ul
+#define PVDEC_HEAP_STREAM_SIZE      0x1C000000ul
+
+/*
+ * Max size of the message payload, in bytes. There are 7 bits used to encode
+ * the message size in the firmware interface.
+ */
+#define VXD_MAX_PAYLOAD_SIZE (127 * sizeof(unsigned int))
+/* Max size of the input message in bytes. */
+#define VXD_MAX_INPUT_SIZE (VXD_MAX_PAYLOAD_SIZE + sizeof(struct vxd_fw_msg))
+/*
+ * Min size of the input message. Two words needed for message header and
+ * stream PTD
+ */
+#define VXD_MIN_INPUT_SIZE 2
+/*
+ * Offset of the stream PTD within message. This word has to be left null in
+ * submitted message, driver will fill it in with an appropriate value.
+ */
+#define VXD_PTD_MSG_OFFSET 1
+
+/* Read flags */
+#define VXD_FW_MSG_RD_FLAGS_MASK 0xffff
+/* Driver watchdog interrupted processing of the message. */
+#define VXD_FW_MSG_FLAG_DWR 0x1
+/* VXD MMU fault occurred when the message was processed. */
+#define VXD_FW_MSG_FLAG_MMU_FAULT 0x2
+/* Invalid input message, e.g. the message was too large. */
+#define VXD_FW_MSG_FLAG_INV 0x4
+/* I/O error occurred when the message was processed. */
+#define VXD_FW_MSG_FLAG_DEV_ERR 0x8
+/*
+ * Driver error occurred when the message was processed, e.g. failed to
+ * allocate memory.
+ */
+#define VXD_FW_MSG_FLAG_DRV_ERR 0x10
+/*
+ * Item was canceled, without being fully processed
+ * i.e. corresponding stream was destroyed.
+ */
+#define VXD_FW_MSG_FLAG_CANCELED 0x20
+/* Firmware internal error occurred when the message was processed */
+#define VXD_FW_MSG_FLAG_FATAL 0x40
+
+/* Write flags */
+#define VXD_FW_MSG_WR_FLAGS_MASK 0xffff0000
+/* Indicates that message shall be dropped after sending it to the firmware. */
+#define VXD_FW_MSG_FLAG_DROP 0x10000
+/*
+ * Indicates that message shall be exclusively handled by
+ * the firmware/hardware. Any other pending messages are
+ * blocked until such message is handled.
+ */
+#define VXD_FW_MSG_FLAG_EXCL 0x20000
+
+#define VXD_MSG_SIZE(msg) (sizeof(struct vxd_fw_msg) + ((msg).payload_size))
+
+/* Header included at the beginning of firmware binary */
+struct vxd_fw_hdr {
+	unsigned int core_size;
+	unsigned int blob_size;
+	unsigned int firmware_id;
+	unsigned int timestamp;
+};
+
+/*
+ * struct vxd_dev_fw - Core component will allocate a buffer for firmware.
+ *                     This structure holds the information about the firmware
+ *                     binary.
+ * @buf_id: The buffer id allocation
+ * @hdr: firmware header information
+ * @fw_size: The size of the fw. Set after successful firmware request.
+ */
+struct vxd_dev_fw {
+	int buf_id;
+	struct vxd_fw_hdr *hdr;
+	unsigned int fw_size;
+	unsigned char ready;
+};
+
+/*
+ * struct vxd_core_props - contains HW core properties
+ * @core_rev: Core revision based on register CR_PVDEC_CORE_REV
+ * @pvdec_core_id: PVDEC Core id based on register CR_PVDEC_CORE_ID
+ * @mmu_config0: MMU configuration 0 based on register MMU_CONFIG0
+ * @mmu_config1: MMU configuration 1 based on register MMU_CONFIG1
+ * @mtx_ram_size: size of the MTX RAM based on register CR_PROC_DEBUG
+ * @pixel_max_frame_cfg: indicates the max frame height and width for
+ *                       PVDEC pipeline and MSVDX pipeline based on register
+ *                       MAX_FRAME_CONFIG
+ * @pixel_pipe_cfg: pipe configuration which codecs are supported in a
+ *                  Pixel Processing Pipe, based on register
+ *                  PIXEL_PIPE_CONFIG
+ * @pixel_misc_cfg: Additional pipe configuration eg. supported scaling
+ *                  or rotation, based on register PIXEL_MISC_CONFIG
+ * @dbg_fifo_size: contains the depth of the Debug FIFO, based on
+ *                 register CR_PROC_DEBUG_FIFO_SIZE
+ */
+struct vxd_core_props {
+	unsigned int core_rev;
+	unsigned int pvdec_core_id;
+	unsigned int mmu_config0;
+	unsigned int mmu_config1;
+	unsigned int mtx_ram_size;
+	unsigned int pixel_max_frame_cfg;
+	unsigned int pixel_pipe_cfg[VXD_MAX_PIPES];
+	unsigned int pixel_misc_cfg[VXD_MAX_PIPES];
+	unsigned int dbg_fifo_size;
+};
+
+struct vxd_alloc_data {
+	unsigned int heap_id;       /* [IN] Heap ID of allocator                */
+	unsigned int size;          /* [IN] Size of device memory (in bytes)    */
+	unsigned int attributes;    /* [IN] Attributes of buffer */
+	unsigned int buf_id;        /* [OUT] Generated buffer ID                */
+};
+
+struct vxd_free_data {
+	unsigned int buf_id;        /* [IN] ID of device buffer to free */
+};
+#endif /* _IMG_DEC_COMMON_H */
diff --git a/drivers/staging/media/vxd/decoder/vxd_pvdec.c b/drivers/staging/media/vxd/decoder/vxd_pvdec.c
new file mode 100644
index 000000000000..c2b59c3dd164
--- /dev/null
+++ b/drivers/staging/media/vxd/decoder/vxd_pvdec.c
@@ -0,0 +1,1745 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * IMG DEC PVDEC function implementations
+ *
+ * Copyright (c) Imagination Technologies Ltd.
+ * Copyright (c) 2021 Texas Instruments Incorporated - http://www.ti.com/
+ *
+ * Authors:
+ *	Amit Makani <amit.makani@ti.com>
+ *
+ * Re-written for upstreamimg
+ *	Sidraya Jayagond <sidraya.bj@pathpartnertech.com>
+ *	Prashanth Kumar Amai <prashanth.ka@pathpartnertech.com>
+ */
+
+#include <linux/interrupt.h>
+#include <linux/time64.h>
+#include <linux/slab.h>
+#include <linux/delay.h>
+#include <linux/jiffies.h>
+#include <linux/dma-mapping.h>
+#include <media/v4l2-ctrls.h>
+#include <media/v4l2-device.h>
+#include <media/v4l2-mem2mem.h>
+
+#include "img_dec_common.h"
+#include "img_pvdec_test_regs.h"
+#include "img_video_bus4_mmu_regs.h"
+#include "vxd_pvdec_priv.h"
+#include "vxd_pvdec_regs.h"
+
+#ifdef PVDEC_SINGLETHREADED_IO
+static DEFINE_SPINLOCK(pvdec_irq_lock);
+static ulong pvdec_irq_flags;
+#endif
+
+static const ulong vxd_plat_poll_udelay = 100;
+
+/* This function will return reminder and quotient */
+static inline unsigned int do_divide(unsigned long long *n, unsigned int base)
+{
+	unsigned int remainder = *n % base;
+	*n = *n / base;
+	return remainder;
+}
+
+/*
+ * Reads PROC_DEBUG register and provides number of MTX RAM banks
+ * and their size
+ */
+static int pvdec_get_mtx_ram_info(void __iomem *reg_base, int *bank_cnt,
+				  unsigned long *bank_size,
+				  unsigned long *last_bank_size)
+{
+	unsigned int ram_bank_count, reg;
+
+	reg = VXD_RD_REG(reg_base, PVDEC_CORE, PROC_DEBUG);
+	ram_bank_count = VXD_RD_REG_FIELD(reg, PVDEC_CORE, PROC_DEBUG, MTX_RAM_BANKS);
+	if (!ram_bank_count)
+		return -EIO;
+
+	if (bank_cnt)
+		*bank_cnt = ram_bank_count;
+
+	if (bank_size) {
+		unsigned int ram_bank_size = VXD_RD_REG_FIELD(reg, PVDEC_CORE,
+				PROC_DEBUG, MTX_RAM_BANK_SIZE);
+		*bank_size = 1 << (ram_bank_size + 2);
+	}
+
+	if (last_bank_size) {
+		unsigned int last_bank = VXD_RD_REG_FIELD(reg, PVDEC_CORE, PROC_DEBUG,
+				MTX_LAST_RAM_BANK_SIZE);
+		unsigned char new_representation = VXD_RD_REG_FIELD(reg,
+				PVDEC_CORE, PROC_DEBUG, MTX_RAM_NEW_REPRESENTATION);
+		if (new_representation) {
+			*last_bank_size = 1024 * last_bank;
+		} else {
+			*last_bank_size = 1 << (last_bank + 2);
+			if (bank_cnt && last_bank == 13 && *bank_cnt == 4) {
+				/*
+				 * VXD hardware ambiguity:
+				 * old cores confuse 120k and 128k
+				 * So assume worst case.
+				 */
+				*last_bank_size -= 0x2000;
+			}
+		}
+	}
+
+	return 0;
+}
+
+/* Provides size of MTX RAM in bytes */
+static int pvdec_get_mtx_ram_size(void __iomem *reg_base, unsigned int *ram_size)
+{
+	int bank_cnt, ret;
+	unsigned long bank_size, last_bank_size;
+
+	ret = pvdec_get_mtx_ram_info(reg_base, &bank_cnt, &bank_size, &last_bank_size);
+	if (ret)
+		return ret;
+
+	*ram_size = (bank_cnt - 1) * bank_size + last_bank_size;
+
+	return 0;
+}
+
+/* Poll for single register-based transfer to/from MTX to complete */
+static unsigned int pvdec_wait_mtx_reg_access(void __iomem *reg_base, unsigned int *mtx_fault)
+{
+	unsigned int pvdec_timeout = PVDEC_TIMEOUT_COUNTER, reg;
+
+	do {
+		/* Check MTX is OK */
+		reg = VXD_RD_REG(reg_base, MTX_CORE, MTX_FAULT0);
+		if (reg != 0) {
+			*mtx_fault = reg;
+			return -EIO;
+		}
+
+		pvdec_timeout--;
+		reg = VXD_RD_REG(reg_base, MTX_CORE, MTX_REG_READ_WRITE_REQUEST);
+	} while ((VXD_RD_REG_FIELD(reg, MTX_CORE,
+		MTX_REG_READ_WRITE_REQUEST,
+		MTX_DREADY) == 0) &&
+		(pvdec_timeout != 0));
+
+	if (pvdec_timeout == 0)
+		return -EIO;
+
+	return 0;
+}
+
+static void pvdec_mtx_status_dump(void __iomem *reg_base, unsigned int *status)
+{
+	unsigned int reg;
+
+	pr_debug("%s: *** dumping status ***\n", __func__);
+
+#define READ_MTX_REG(_NAME_) \
+	do { \
+		unsigned int val; \
+		VXD_WR_REG(reg_base, MTX_CORE, \
+			MTX_REG_READ_WRITE_REQUEST, reg); \
+		if (pvdec_wait_mtx_reg_access(reg_base, &reg)) { \
+			pr_debug("%s: " \
+				"MTX REG RD fault: 0x%08x\n", __func__, reg); \
+			break; \
+		} \
+		val = VXD_RD_REG(reg_base, MTX_CORE, MTX_REG_READ_WRITE_DATA); \
+		if (status) \
+			*status++ = val; \
+		pr_debug("%s: " _NAME_ ": 0x%08x\n", __func__, val); \
+	} while (0)
+
+	reg = 0;
+	reg = VXD_WR_REG_FIELD(reg, MTX_CORE, /* Read */
+			       MTX_REG_READ_WRITE_REQUEST, MTX_RNW, 1);
+	reg = VXD_WR_REG_FIELD(reg, MTX_CORE, /* PC or PCX */
+			       MTX_REG_READ_WRITE_REQUEST, MTX_USPECIFIER, 5);
+	reg = VXD_WR_REG_FIELD(reg, MTX_CORE, /* PC */
+			       MTX_REG_READ_WRITE_REQUEST, MTX_RSPECIFIER, 0);
+	READ_MTX_REG("MTX PC");
+
+	reg = 0;
+	reg = VXD_WR_REG_FIELD(reg, MTX_CORE, /* Read */
+			       MTX_REG_READ_WRITE_REQUEST, MTX_RNW, 1);
+	reg = VXD_WR_REG_FIELD(reg, MTX_CORE, /* PC or PCX */
+			       MTX_REG_READ_WRITE_REQUEST, MTX_USPECIFIER, 5);
+	reg = VXD_WR_REG_FIELD(reg, MTX_CORE, /* PCX */
+			       MTX_REG_READ_WRITE_REQUEST, MTX_RSPECIFIER, 1);
+	READ_MTX_REG("MTX PCX");
+
+	reg = 0;
+	reg = VXD_WR_REG_FIELD(reg, MTX_CORE, /* Read */
+			       MTX_REG_READ_WRITE_REQUEST, MTX_RNW, 1);
+	reg = VXD_WR_REG_FIELD(reg, MTX_CORE, /* A0StP */
+			       MTX_REG_READ_WRITE_REQUEST, MTX_USPECIFIER, 3);
+	reg = VXD_WR_REG_FIELD(reg, MTX_CORE,
+			       MTX_REG_READ_WRITE_REQUEST, MTX_RSPECIFIER, 0);
+	READ_MTX_REG("MTX A0STP");
+
+	reg = 0;
+	reg = VXD_WR_REG_FIELD(reg, MTX_CORE, /* Read */
+			       MTX_REG_READ_WRITE_REQUEST, MTX_RNW, 1);
+	reg = VXD_WR_REG_FIELD(reg, MTX_CORE, /* A0FrP */
+			       MTX_REG_READ_WRITE_REQUEST, MTX_USPECIFIER, 3);
+	reg = VXD_WR_REG_FIELD(reg, MTX_CORE, MTX_REG_READ_WRITE_REQUEST, MTX_RSPECIFIER, 1);
+	READ_MTX_REG("MTX A0FRP");
+#undef PRINT_MTX_REG
+
+	pr_debug("%s: *** status dump done ***\n", __func__);
+}
+
+static void pvdec_prep_fw_upload(const void *dev,
+				 void __iomem *reg_base,
+				 struct vxd_ena_params *ena_params,
+				 unsigned char dma_channel)
+{
+	unsigned int fw_vxd_virt_addr = ena_params->fw_buf_virt_addr;
+	unsigned int vxd_ptd_addr = ena_params->ptd;
+	unsigned int reg = 0;
+	int i;
+	unsigned int flags = PVDEC_FWFLAG_FORCE_FS_FLOW |
+		PVDEC_FWFLAG_DISABLE_GENC_FLUSHING |
+		PVDEC_FWFLAG_DISABLE_AUTONOMOUS_RESET |
+		PVDEC_FWFLAG_DISABLE_IDLE_GPIO |
+		PVDEC_FWFLAG_ENABLE_ERROR_CONCEALMENT;
+
+	if (ena_params->secure)
+		flags |= PVDEC_FWFLAG_BIG_TO_HOST_BUFFER;
+
+#ifdef DEBUG_DECODER_DRIVER
+	dev_dbg(dev, "%s: fw_virt: 0x%x, ptd: 0x%x, dma ch: %u, flags: 0x%x\n",
+		__func__, fw_vxd_virt_addr, vxd_ptd_addr, dma_channel, flags);
+#endif
+
+	/* Reset MTX */
+	reg = VXD_WR_REG_FIELD(reg, MTX_CORE, MTX_SOFT_RESET, MTX_RESET, 1);
+	VXD_WR_REG(reg_base, MTX_CORE, MTX_SOFT_RESET, reg);
+	/*
+	 * NOTE: The MTX reset bit is WRITE ONLY, so we cannot
+	 * check the reset procedure has finished, thus BEWARE to put
+	 * any MTX_CORE* access just after this line
+	 */
+
+	/* Clear COMMS RAM header */
+	for (i = 0; i < PVDEC_FW_COMMS_HDR_SIZE; i++)
+		VXD_WR_REG_ABS(reg_base, VLR_OFFSET + i * sizeof(unsigned int), 0);
+
+	VXD_WR_REG_ABS(reg_base, VLR_OFFSET + PVDEC_FW_FLAGS_OFFSET, flags);
+	/* Do not wait for debug FIFO flag - set it only when requested */
+	VXD_WR_REG_ABS(reg_base, VLR_OFFSET + PVDEC_FW_SIGNATURE_OFFSET,
+		       !ena_params->wait_dbg_fifo);
+
+	/*
+	 * Clear the bypass bits and enable extended addressing in MMU.
+	 * Firmware depends on this configuration, so we have to set it,
+	 * even if firmware is being uploaded via registers.
+	 */
+	reg = 0;
+	reg = VXD_WR_REG_FIELD(reg, IMG_VIDEO_BUS4_MMU, MMU_ADDRESS_CONTROL, UPPER_ADDR_FIXED, 0);
+	reg = VXD_WR_REG_FIELD(reg, IMG_VIDEO_BUS4_MMU, MMU_ADDRESS_CONTROL, MMU_ENA_EXT_ADDR, 1);
+	reg = VXD_WR_REG_FIELD(reg, IMG_VIDEO_BUS4_MMU, MMU_ADDRESS_CONTROL, MMU_BYPASS, 0);
+	VXD_WR_REG(reg_base, IMG_VIDEO_BUS4_MMU, MMU_ADDRESS_CONTROL, reg);
+
+	/*
+	 * Buffer device virtual address.
+	 * This is an address of a firmware blob, firmware reads this base
+	 * address from DMAC_SETUP register and uses to load the modules, so it
+	 * has to be set even when uploading the FW via registers.
+	 */
+	VXD_WR_RPT_REG(reg_base, DMAC, DMAC_SETUP, fw_vxd_virt_addr, dma_channel);
+
+	/*
+	 * Set base address of PTD. Same as before, has to be configured even
+	 * when uploading the firmware via regs, FW uses it to execute DMA
+	 * before switching to stream MMU context.
+	 */
+	VXD_WR_REG(reg_base, IMG_VIDEO_BUS4_MMU, MMU_DIR_BASE_ADDR, vxd_ptd_addr);
+
+	/* Configure MMU bank index - Use bank 0 */
+	VXD_WR_REG(reg_base, IMG_VIDEO_BUS4_MMU, MMU_BANK_INDEX, 0);
+
+	/* Set the MTX timer divider register */
+	reg = 0;
+	reg = VXD_WR_REG_FIELD(reg, MTX_CORE, MTX_SYSC_TIMERDIV, TIMER_EN, 1);
+	/*
+	 * Setting max freq - divide by 1 for better measurement accuracy
+	 * during fw upload stage
+	 */
+	reg = VXD_WR_REG_FIELD(reg, MTX_CORE, MTX_SYSC_TIMERDIV, TIMER_DIV, 0);
+	VXD_WR_REG(reg_base, MTX_CORE, MTX_SYSC_TIMERDIV, reg);
+}
+
+static int pvdec_check_fw_sig(void __iomem *reg_base)
+{
+	unsigned int fw_sig = VXD_RD_REG_ABS(reg_base, VLR_OFFSET +
+			PVDEC_FW_SIGNATURE_OFFSET);
+
+	if (fw_sig != PVDEC_FW_READY_SIG)
+		return -EIO;
+
+	return 0;
+}
+
+static void pvdec_kick_mtx(void __iomem *reg_base)
+{
+	unsigned int reg = 0;
+
+	reg = VXD_WR_REG_FIELD(reg, MTX_CORE, MTX_KICKI, MTX_KICKI, 1);
+	VXD_WR_REG(reg_base, MTX_CORE, MTX_KICKI, reg);
+}
+
+static int pvdec_write_vlr(void __iomem *reg_base, const unsigned int *buf,
+			   unsigned long size_dwrds, int off_dwrds)
+{
+	unsigned int i;
+
+	if (((off_dwrds + size_dwrds) * sizeof(unsigned int)) > VLR_SIZE)
+		return -EINVAL;
+
+	for (i = 0; i < size_dwrds; i++) {
+		int off = (off_dwrds + i) * sizeof(unsigned int);
+
+		VXD_WR_REG_ABS(reg_base, (VLR_OFFSET + off), *buf);
+		buf++;
+	}
+
+	return 0;
+}
+
+static int pvdec_poll_fw_boot(void __iomem *reg_base, struct vxd_boot_poll_params *poll_params)
+{
+	unsigned int i;
+
+	for (i = 0; i < 25; i++) {
+		if (!pvdec_check_fw_sig(reg_base))
+			return 0;
+		usleep_range(100, 110);
+	}
+	for (i = 0; i < poll_params->msleep_cycles; i++) {
+		if (!pvdec_check_fw_sig(reg_base))
+			return 0;
+		msleep(100);
+	}
+	return -EIO;
+}
+
+static int pvdec_read_vlr(void __iomem *reg_base, unsigned int *buf,
+			  unsigned long size_dwrds, int off_dwrds)
+{
+	unsigned int i;
+
+	if (((off_dwrds + size_dwrds) * sizeof(unsigned int)) > VLR_SIZE)
+		return -EINVAL;
+
+	for (i = 0; i < size_dwrds; i++) {
+		int off = (off_dwrds + i) * sizeof(unsigned int);
+		*buf++ = VXD_RD_REG_ABS(reg_base, (VLR_OFFSET + off));
+	}
+
+	return 0;
+}
+
+/* Get configuration of a ring buffer used to send messages to the MTX */
+static int pvdec_get_to_mtx_cfg(void __iomem *reg_base, unsigned long *size, int *off,
+				unsigned int *wr_idx, unsigned int *rd_idx)
+{
+	unsigned int to_mtx_cfg;
+	int to_mtx_off, ret;
+
+	ret = pvdec_check_fw_sig(reg_base);
+	if (ret)
+		return ret;
+
+	to_mtx_cfg = VXD_RD_REG_ABS(reg_base, VLR_OFFSET + PVDEC_FW_TO_MTX_BUF_CONF_OFFSET);
+
+	*size = PVDEC_FW_COM_BUF_SIZE(to_mtx_cfg);
+	to_mtx_off = PVDEC_FW_COM_BUF_OFF(to_mtx_cfg);
+
+	if (to_mtx_off % 4)
+		return -EIO;
+
+	to_mtx_off /= sizeof(unsigned int);
+	*off = to_mtx_off;
+
+	*wr_idx = VXD_RD_REG_ABS(reg_base, VLR_OFFSET + PVDEC_FW_TO_MTX_WR_IDX_OFFSET);
+	*rd_idx = VXD_RD_REG_ABS(reg_base, VLR_OFFSET + PVDEC_FW_TO_MTX_RD_IDX_OFFSET);
+
+	if ((*rd_idx >= *size) || (*wr_idx >= *size))
+		return -EIO;
+
+	return 0;
+}
+
+/* Submit a padding message to the host->MTX ring buffer */
+static int pvdec_send_pad_msg(void __iomem *reg_base)
+{
+	int ret, pad_size, to_mtx_off; /* offset in dwords */
+	unsigned int wr_idx, rd_idx; /* indicies in dwords */
+	unsigned long pad_msg_size = 1, to_mtx_size; /* size in dwords */
+	const unsigned long max_msg_size = VXD_MAX_PAYLOAD_SIZE / sizeof(unsigned int);
+	unsigned int pad_msg;
+
+	ret = pvdec_get_to_mtx_cfg(reg_base, &to_mtx_size, &to_mtx_off, &wr_idx, &rd_idx);
+	if (ret)
+		return ret;
+
+	pad_size = to_mtx_size - wr_idx; /* size in dwords */
+
+	if (pad_size <= 0) {
+		VXD_WR_REG_ABS(reg_base, VLR_OFFSET + PVDEC_FW_TO_MTX_WR_IDX_OFFSET, 0);
+		return 0;
+	}
+
+	while (pad_size > 0) {
+		int cur_pad_size = pad_size > max_msg_size ?
+			max_msg_size : pad_size;
+
+		pad_msg = 0;
+		pad_msg = VXD_WR_REG_FIELD(pad_msg, PVDEC_FW, DEVA_GENMSG, MSG_SIZE, cur_pad_size);
+		pad_msg = VXD_WR_REG_FIELD(pad_msg, PVDEC_FW, DEVA_GENMSG,
+					   MSG_TYPE, PVDEC_FW_MSG_TYPE_PADDING);
+
+		ret = pvdec_write_vlr(reg_base, &pad_msg, pad_msg_size, to_mtx_off + wr_idx);
+		if (ret)
+			return ret;
+
+		wr_idx += cur_pad_size;
+
+		VXD_WR_REG_ABS(reg_base, VLR_OFFSET + PVDEC_FW_TO_MTX_WR_IDX_OFFSET, wr_idx);
+
+		pad_size -= cur_pad_size;
+
+		pvdec_kick_mtx(reg_base);
+	}
+
+	wr_idx = 0;
+	VXD_WR_REG_ABS(reg_base, VLR_OFFSET + PVDEC_FW_TO_MTX_WR_IDX_OFFSET, wr_idx);
+
+	return 0;
+}
+
+/*
+ * Check if there is enough space in comms RAM to submit a <msg_size>
+ * dwords long message. Submit a padding message if necessary and requested.
+ *
+ * Returns 0 if there is space for a message.
+ * Returns -EINVAL when msg is too big or empty.
+ * Returns -EIO when there was a problem accessing the HW.
+ * Returns -EBUSY when there is not ennough space.
+ */
+static int pvdec_check_comms_space(void __iomem *reg_base, unsigned long msg_size,
+				   unsigned char send_padding)
+{
+	int ret, to_mtx_off; /* offset in dwords */
+	unsigned int wr_idx, rd_idx; /* indicies in dwords */
+	unsigned long to_mtx_size; /* size in dwords */
+
+	ret = pvdec_get_to_mtx_cfg(reg_base, &to_mtx_size, &to_mtx_off, &wr_idx, &rd_idx);
+	if (ret)
+		return ret;
+
+	/* Enormous or empty message, won't fit */
+	if (msg_size >= to_mtx_size || !msg_size)
+		return -EINVAL;
+
+	/* Buffer does not wrap */
+	if (wr_idx >= rd_idx) {
+		/* Is there enough space to put the message? */
+		if (wr_idx + msg_size < to_mtx_size)
+			return 0;
+
+		if (!send_padding)
+			return -EBUSY;
+
+		/* Check if it's ok to send a padding message */
+		if (rd_idx == 0)
+			return -EBUSY;
+
+		/* Send a padding message */
+		ret = pvdec_send_pad_msg(reg_base);
+		if (ret)
+			return ret;
+
+		/*
+		 * And check if there's enough space at the beginning
+		 * of a buffer
+		 */
+		if (msg_size >= rd_idx)
+			return -EBUSY; /* Not enough space at the beginning */
+
+	} else { /* Buffer wraps */
+		if (wr_idx + msg_size >= rd_idx)
+			return -EBUSY; /* Not enough space! */
+	}
+
+	return 0;
+}
+
+/* Get configuration of a ring buffer used to receive messages from the MTX */
+static int pvdec_get_to_host_cfg(void __iomem *reg_base, unsigned long *size, int *off,
+				 unsigned int *wr_idx, unsigned int *rd_idx)
+{
+	unsigned int to_host_cfg;
+	int to_host_off, ret;
+
+	ret = pvdec_check_fw_sig(reg_base);
+	if (ret)
+		return ret;
+
+	to_host_cfg = VXD_RD_REG_ABS(reg_base, VLR_OFFSET + PVDEC_FW_TO_HOST_BUF_CONF_OFFSET);
+
+	*size = PVDEC_FW_COM_BUF_SIZE(to_host_cfg);
+	to_host_off = PVDEC_FW_COM_BUF_OFF(to_host_cfg);
+
+	if (to_host_off % 4)
+		return -EIO;
+
+	to_host_off /= sizeof(unsigned int);
+	*off = to_host_off;
+
+	*wr_idx = VXD_RD_REG_ABS(reg_base, VLR_OFFSET + PVDEC_FW_TO_HOST_WR_IDX_OFFSET);
+	*rd_idx = VXD_RD_REG_ABS(reg_base, VLR_OFFSET + PVDEC_FW_TO_HOST_RD_IDX_OFFSET);
+
+	if ((*rd_idx >= *size) || (*wr_idx >= *size))
+		return -EIO;
+
+	return 0;
+}
+
+static void pvdec_select_pipe(void __iomem *reg_base, unsigned char pipe)
+{
+	unsigned int reg = 0;
+
+	reg = VXD_WR_REG_FIELD(reg, PVDEC_CORE, PVDEC_HOST_PIPE_SELECT, PIPE_SEL, pipe);
+	VXD_WR_REG(reg_base, PVDEC_CORE, PVDEC_HOST_PIPE_SELECT, reg);
+}
+
+static void pvdec_pre_boot_setup(const void *dev,
+				 void __iomem *reg_base,
+				 struct vxd_ena_params *ena_params)
+{
+	/* Memory staller pre boot settings */
+	if (ena_params->mem_staller.data) {
+		unsigned char size = ena_params->mem_staller.size;
+
+		if (size == PVDEC_CORE_MEMSTALLER_ELEMENTS) {
+			unsigned int *data = ena_params->mem_staller.data;
+
+#ifdef DEBUG_DECODER_DRIVER
+			dev_dbg(dev, "%s: Setting up memory staller", __func__);
+#endif
+			/*
+			 * Data structure represents PVDEC_TEST memory staller
+			 * registers according to TRM 5.25 section
+			 */
+			VXD_WR_REG(reg_base, PVDEC_TEST, MEM_READ_LATENCY, data[0]);
+			VXD_WR_REG(reg_base, PVDEC_TEST, MEM_WRITE_RESPONSE_LATENCY, data[1]);
+			VXD_WR_REG(reg_base, PVDEC_TEST, MEM_CTRL, data[2]);
+			VXD_WR_REG(reg_base, PVDEC_TEST, RAND_STL_MEM_CMD_CONFIG, data[3]);
+			VXD_WR_REG(reg_base, PVDEC_TEST, RAND_STL_MEM_WDATA_CONFIG, data[4]);
+			VXD_WR_REG(reg_base, PVDEC_TEST, RAND_STL_MEM_WRESP_CONFIG, data[5]);
+			VXD_WR_REG(reg_base, PVDEC_TEST, RAND_STL_MEM_RDATA_CONFIG, data[6]);
+		} else {
+			dev_warn(dev, "%s: Wrong layout of mem staller config (%u)!",
+				 __func__, size);
+		}
+	}
+}
+
+static void pvdec_post_boot_setup(const void *dev,
+				  void __iomem *reg_base,
+				  unsigned int freq_khz)
+{
+	int reg;
+
+	/*
+	 * Configure VXD MMU to use video tiles (256x16) and unique
+	 * strides per context as default. There is currently no
+	 * override mechanism.
+	 */
+	reg = VXD_RD_REG(reg_base, IMG_VIDEO_BUS4_MMU, MMU_CONTROL0);
+	reg = VXD_WR_REG_FIELD(reg, IMG_VIDEO_BUS4_MMU, MMU_CONTROL0,
+			       MMU_TILING_SCHEME, 0);
+	reg = VXD_WR_REG_FIELD(reg, IMG_VIDEO_BUS4_MMU, MMU_CONTROL0,
+			       USE_TILE_STRIDE_PER_CTX, 1);
+	VXD_WR_REG(reg_base, IMG_VIDEO_BUS4_MMU, MMU_CONTROL0, reg);
+
+	/*
+	 * Setup VXD MMU with the tile heap device virtual address
+	 * ranges.
+	 */
+	VXD_WR_RPT_REG(reg_base, IMG_VIDEO_BUS4_MMU, MMU_TILE_MIN_ADDR,
+		       PVDEC_HEAP_TILE512_START, 0);
+	VXD_WR_RPT_REG(reg_base, IMG_VIDEO_BUS4_MMU, MMU_TILE_MAX_ADDR,
+		       PVDEC_HEAP_TILE512_START + PVDEC_HEAP_TILE512_SIZE - 1, 0);
+	VXD_WR_RPT_REG(reg_base, IMG_VIDEO_BUS4_MMU, MMU_TILE_MIN_ADDR,
+		       PVDEC_HEAP_TILE1024_START, 1);
+	VXD_WR_RPT_REG(reg_base, IMG_VIDEO_BUS4_MMU, MMU_TILE_MAX_ADDR,
+		       PVDEC_HEAP_TILE1024_START + PVDEC_HEAP_TILE1024_SIZE - 1, 1);
+	VXD_WR_RPT_REG(reg_base, IMG_VIDEO_BUS4_MMU, MMU_TILE_MIN_ADDR,
+		       PVDEC_HEAP_TILE2048_START, 2);
+	VXD_WR_RPT_REG(reg_base, IMG_VIDEO_BUS4_MMU, MMU_TILE_MAX_ADDR,
+		       PVDEC_HEAP_TILE2048_START + PVDEC_HEAP_TILE2048_SIZE - 1, 2);
+	VXD_WR_RPT_REG(reg_base, IMG_VIDEO_BUS4_MMU, MMU_TILE_MIN_ADDR,
+		       PVDEC_HEAP_TILE4096_START, 3);
+	VXD_WR_RPT_REG(reg_base, IMG_VIDEO_BUS4_MMU, MMU_TILE_MAX_ADDR,
+		       PVDEC_HEAP_TILE4096_START + PVDEC_HEAP_TILE4096_SIZE - 1, 3);
+
+	/* Disable timer */
+	VXD_WR_REG(reg_base, MTX_CORE, MTX_SYSC_TIMERDIV, 0);
+
+	reg = 0;
+	if (freq_khz)
+		reg = VXD_WR_REG_FIELD(reg, MTX_CORE, MTX_SYSC_TIMERDIV, TIMER_DIV,
+				       PVDEC_CALC_TIMER_DIV(freq_khz / 1000));
+	else
+		reg = VXD_WR_REG_FIELD(reg, MTX_CORE, MTX_SYSC_TIMERDIV,
+				       TIMER_DIV, PVDEC_CLK_MHZ_DEFAULT - 1);
+
+	/* Enable the MTX timer with final settings */
+	reg = VXD_WR_REG_FIELD(reg, MTX_CORE, MTX_SYSC_TIMERDIV, TIMER_EN, 1);
+	VXD_WR_REG(reg_base, MTX_CORE, MTX_SYSC_TIMERDIV, reg);
+}
+
+static void pvdec_clock_measure(void __iomem *reg_base,
+				struct timespec64 *start_time,
+				unsigned int *start_ticks)
+{
+	local_irq_disable();
+	ktime_get_real_ts64(start_time);
+	*start_ticks = VXD_RD_REG(reg_base, MTX_CORE, MTX_SYSC_TXTIMER);
+	local_irq_enable();
+}
+
+static int pvdec_clock_calculate(const void *dev,
+				 void __iomem *reg_base,
+				 struct timespec64 *start_time,
+				 unsigned int start_ticks,
+				 unsigned int *freq_khz)
+{
+	struct timespec64 end_time, dif_time;
+	long long span_nsec = 0;
+	unsigned int stop_ticks, tot_ticks;
+
+	local_irq_disable();
+	ktime_get_real_ts64(&end_time);
+
+	stop_ticks = VXD_RD_REG(reg_base, MTX_CORE, MTX_SYSC_TXTIMER);
+	local_irq_enable();
+
+	*(struct timespec64 *)(&dif_time) = timespec64_sub(*((struct timespec64 *)(&end_time)),
+							  *((struct timespec64 *)(&start_time)));
+
+	span_nsec = timespec64_to_ns((const struct timespec64 *)&dif_time);
+
+	/* Sanity check for mtx timer */
+	if (!stop_ticks || stop_ticks < start_ticks) {
+		dev_err(dev, "%s: invalid ticks (0x%x -> 0x%x)\n",
+			__func__, start_ticks, stop_ticks);
+		return -EIO;
+	}
+	tot_ticks = stop_ticks - start_ticks;
+
+	if (span_nsec) {
+		unsigned long long res = (unsigned long long)tot_ticks * 1000000UL;
+
+		do_divide(&res, span_nsec);
+		*freq_khz = (unsigned int)res;
+		if (*freq_khz < 1000)
+			*freq_khz = 1000;   /* 1MHz */
+	} else {
+		dev_err(dev, "%s: generic failure!\n", __func__);
+		*freq_khz = 0;
+		return -ERANGE;
+	}
+
+	return 0;
+}
+
+static int pvdec_wait_dma_done(const void *dev,
+			       void __iomem *reg_base,
+			       unsigned long size,
+			       unsigned char dma_channel)
+{
+	unsigned int reg, timeout = PVDEC_TIMEOUT_COUNTER, prev_count, count = size;
+
+	do {
+		usleep_range(300, 310);
+		prev_count = count;
+		reg = VXD_RD_RPT_REG(reg_base, DMAC, DMAC_COUNT, dma_channel);
+		count = VXD_RD_REG_FIELD(reg, DMAC, DMAC_COUNT, CNT);
+		/* Check for dma progress */
+		if (count == prev_count) {
+			/* There could be a bus lag, protect against that */
+			timeout--;
+			if (timeout == 0) {
+				dev_err(dev, "%s FW DMA failed! (0x%x)\n", __func__, count);
+				return -EIO;
+			}
+		} else {
+			/* Reset timeout counter */
+			timeout = PVDEC_TIMEOUT_COUNTER;
+		}
+	} while (count > 0);
+
+	return 0;
+}
+
+static int pvdec_start_fw_dma(const void *dev,
+			      void __iomem *reg_base,
+			      unsigned char dma_channel,
+			      unsigned long fw_buf_size,
+			      unsigned int *freq_khz)
+{
+	unsigned int reg = 0;
+	int ret = 0;
+
+	fw_buf_size = fw_buf_size / sizeof(unsigned int);
+#ifdef DEBUG_DECODER_DRIVER
+	dev_dbg(dev, "%s: dma FW upload, fw_buf_size: %zu (dwords)\n", __func__, fw_buf_size);
+#endif
+
+	pvdec_select_pipe(reg_base, 1);
+
+	reg = VXD_RD_REG(reg_base, PVDEC_PIXEL, PIXEL_MAN_CLK_ENA);
+	reg = VXD_WR_REG_FIELD(reg, PVDEC_PIXEL, PIXEL_MAN_CLK_ENA, PIXEL_DMAC_MAN_CLK_ENA, 1);
+	reg = VXD_WR_REG_FIELD(reg, PVDEC_PIXEL, PIXEL_MAN_CLK_ENA, PIXEL_REG_MAN_CLK_ENA, 1);
+	VXD_WR_REG(reg_base, PVDEC_PIXEL, PIXEL_MAN_CLK_ENA, reg);
+
+	/*
+	 * Setup MTX to receive DMA
+	 * DMA transfers to/from the MTX have to be 32-bit aligned and
+	 * in multiples of 32 bits
+	 */
+	VXD_WR_REG(reg_base, MTX_CORE, MTX_SYSC_CDMAA, 0); /* MTX: 0x80900000 */
+
+	reg = 0;
+	/* Burst size in multiples of 64 bits (allowed values are 2 or 4) */
+	reg = VXD_WR_REG_FIELD(reg, MTX_CORE, MTX_SYSC_CDMAC, BURSTSIZE, 0);
+	/* 0 - write to MTX memory */
+	reg = VXD_WR_REG_FIELD(reg, MTX_CORE, MTX_SYSC_CDMAC, RNW, 0);
+	/* Begin transfer */
+	reg = VXD_WR_REG_FIELD(reg, MTX_CORE, MTX_SYSC_CDMAC, ENABLE, 1);
+	/* Transfer size */
+	reg = VXD_WR_REG_FIELD(reg, MTX_CORE, MTX_SYSC_CDMAC, LENGTH,
+			       ((fw_buf_size + 7) & (~7)) + 8);
+	VXD_WR_REG(reg_base, MTX_CORE, MTX_SYSC_CDMAC, reg);
+
+	/* Boot MTX once transfer is done */
+	reg = 0;
+	reg = VXD_WR_REG_FIELD(reg, PVDEC_CORE, PROC_DMAC_CONTROL,
+			       BOOT_ON_DMA_CH0, 1);
+	VXD_WR_REG(reg_base, PVDEC_CORE, PROC_DMAC_CONTROL, reg);
+
+	/* Toggle channel 0 usage between MTX and other PVDEC peripherals */
+	reg = 0;
+	reg = VXD_WR_REG_FIELD(reg, PVDEC_PIXEL, PIXEL_CONTROL_0,
+			       DMAC_CH_SEL_FOR_MTX, 0);
+	VXD_WR_REG(reg_base, PVDEC_PIXEL, PIXEL_CONTROL_0, reg);
+
+	/* Reset DMA channel first */
+	reg = 0;
+	reg = VXD_WR_REG_FIELD(reg, DMAC, DMAC_COUNT, SRST, 1);
+	VXD_WR_RPT_REG(reg_base, DMAC, DMAC_COUNT, reg, dma_channel);
+
+	reg = VXD_WR_REG_FIELD(reg, DMAC, DMAC_COUNT, LIST_EN, 0);
+	reg = VXD_WR_REG_FIELD(reg, DMAC, DMAC_COUNT, CNT, 0);
+	reg = VXD_WR_REG_FIELD(reg, DMAC, DMAC_COUNT, EN, 0);
+	VXD_WR_RPT_REG(reg_base, DMAC, DMAC_COUNT, reg, dma_channel);
+
+	reg = VXD_WR_REG_FIELD(reg, DMAC, DMAC_COUNT, SRST, 0);
+	VXD_WR_RPT_REG(reg_base, DMAC, DMAC_COUNT, reg, dma_channel);
+
+	/*
+	 * Setup a Simple DMA for Ch0
+	 * Specify the holdover period to use for the channel
+	 */
+	reg = 0;
+	reg = VXD_WR_REG_FIELD(reg, DMAC, DMAC_PER_HOLD, PER_HOLD, 7);
+	VXD_WR_RPT_REG(reg_base, DMAC, DMAC_PER_HOLD, reg, dma_channel);
+
+	/* Clear the DMAC Stats */
+	VXD_WR_RPT_REG(reg_base, DMAC, DMAC_IRQ_STAT, 0, dma_channel);
+
+	reg = 0;
+	reg = VXD_WR_REG_FIELD(reg, DMAC, DMAC_PERIPH_ADDR, ADDR,
+			       MTX_CORE_MTX_SYSC_CDMAT_OFFSET);
+	VXD_WR_RPT_REG(reg_base, DMAC, DMAC_PERIPH_ADDR, reg, dma_channel);
+
+	/* Clear peripheral register address */
+	reg = 0;
+	reg = VXD_WR_REG_FIELD(reg, DMAC, DMAC_PERIPH, ACC_DEL, 0);
+	reg = VXD_WR_REG_FIELD(reg, DMAC, DMAC_PERIPH, INCR, DMAC_INCR_OFF);
+	reg = VXD_WR_REG_FIELD(reg, DMAC, DMAC_PERIPH, BURST, DMAC_BURST_1);
+	reg = VXD_WR_REG_FIELD(reg, DMAC, DMAC_PERIPH, EXT_BURST, DMAC_EXT_BURST_0);
+	reg = VXD_WR_REG_FIELD(reg, DMAC, DMAC_PERIPH, EXT_SA, 0);
+	VXD_WR_RPT_REG(reg_base, DMAC, DMAC_PERIPH, reg, dma_channel);
+
+	/*
+	 * Now start the transfer by setting the list enable bit in
+	 * the count register
+	 */
+	reg = 0;
+	reg = VXD_WR_REG_FIELD(reg, DMAC, DMAC_COUNT, TRANSFER_IEN, 1);
+	reg = VXD_WR_REG_FIELD(reg, DMAC, DMAC_COUNT, PW, DMAC_PWIDTH_32_BIT);
+	reg = VXD_WR_REG_FIELD(reg, DMAC, DMAC_COUNT, DIR, DMAC_MEM_TO_VXD);
+	reg = VXD_WR_REG_FIELD(reg, DMAC, DMAC_COUNT, PI, DMAC_INCR_ON);
+	reg = VXD_WR_REG_FIELD(reg, DMAC, DMAC_COUNT, LIST_FIN_CTL, 0);
+	reg = VXD_WR_REG_FIELD(reg, DMAC, DMAC_COUNT, LIST_EN, 0);
+	reg = VXD_WR_REG_FIELD(reg, DMAC, DMAC_COUNT, ENABLE_2D_MODE, 0);
+	reg = VXD_WR_REG_FIELD(reg, DMAC, DMAC_COUNT, CNT, fw_buf_size);
+	VXD_WR_RPT_REG(reg_base, DMAC, DMAC_COUNT, reg, dma_channel);
+
+	reg = VXD_WR_REG_FIELD(reg, DMAC, DMAC_COUNT, EN, 1);
+	VXD_WR_RPT_REG(reg_base, DMAC, DMAC_COUNT, reg, dma_channel);
+
+	/* NOTE: The MTX timer starts once DMA boot is triggered */
+	{
+		struct timespec64 host_time;
+		unsigned int mtx_time;
+
+		pvdec_clock_measure(reg_base, &host_time, &mtx_time);
+
+		ret = pvdec_wait_dma_done(dev, reg_base, fw_buf_size, dma_channel);
+		if (!ret) {
+			if (pvdec_clock_calculate(dev, reg_base, &host_time, mtx_time,
+						  freq_khz) < 0)
+				dev_dbg(dev, "%s: measure info not available!\n", __func__);
+		}
+	}
+
+	return ret;
+}
+
+static int pvdec_set_clocks(void __iomem *reg_base, unsigned int req_clocks)
+{
+	unsigned int clocks = 0, reg;
+	unsigned int pvdec_timeout;
+
+	/* Turn on core clocks only */
+	clocks = VXD_WR_REG_FIELD(clocks, PVDEC_CORE, PVDEC_MAN_CLK_ENA,
+				  PVDEC_REG_MAN_CLK_ENA, 1);
+	clocks = VXD_WR_REG_FIELD(clocks, PVDEC_CORE, PVDEC_MAN_CLK_ENA, CORE_MAN_CLK_ENA, 1);
+
+	/* Wait until core clocks set */
+	pvdec_timeout = PVDEC_TIMEOUT_COUNTER;
+	do {
+		VXD_WR_REG(reg_base, PVDEC_CORE, PVDEC_MAN_CLK_ENA, clocks);
+		udelay(vxd_plat_poll_udelay);
+		reg = VXD_RD_REG(reg_base, PVDEC_CORE, PVDEC_MAN_CLK_ENA);
+		pvdec_timeout--;
+	} while (reg != clocks && pvdec_timeout != 0);
+
+	if (pvdec_timeout == 0)
+		return -EIO;
+
+	/* Write requested clocks */
+	VXD_WR_REG(reg_base, PVDEC_CORE, PVDEC_MAN_CLK_ENA, req_clocks);
+
+	return 0;
+}
+
+static int pvdec_enable_clocks(void __iomem *reg_base)
+{
+	unsigned int clocks = 0;
+
+	clocks = VXD_WR_REG_FIELD(clocks, PVDEC_CORE, PVDEC_MAN_CLK_ENA,
+				  PVDEC_REG_MAN_CLK_ENA, 1);
+	clocks = VXD_WR_REG_FIELD(clocks, PVDEC_CORE, PVDEC_MAN_CLK_ENA,
+				  CORE_MAN_CLK_ENA, 1);
+	clocks = VXD_WR_REG_FIELD(clocks, PVDEC_CORE, PVDEC_MAN_CLK_ENA,
+				  MEM_MAN_CLK_ENA, 1);
+	clocks = VXD_WR_REG_FIELD(clocks, PVDEC_CORE, PVDEC_MAN_CLK_ENA,
+				  PROC_MAN_CLK_ENA, 1);
+	clocks = VXD_WR_REG_FIELD(clocks, PVDEC_CORE, PVDEC_MAN_CLK_ENA,
+				  PIXEL_PROC_MAN_CLK_ENA, 1);
+
+	return pvdec_set_clocks(reg_base, clocks);
+}
+
+static int pvdec_disable_clocks(void __iomem *reg_base)
+{
+	return pvdec_set_clocks(reg_base, 0);
+}
+
+static void pvdec_ena_mtx_int(void __iomem *reg_base)
+{
+	unsigned int reg = VXD_RD_REG(reg_base, PVDEC_CORE, PVDEC_HOST_INT_ENA);
+
+	reg = VXD_WR_REG_FIELD(reg, PVDEC_CORE, PVDEC_INT_STAT, HOST_PROC_IRQ, 1);
+	reg = VXD_WR_REG_FIELD(reg, PVDEC_CORE, PVDEC_INT_STAT, HOST_MMU_FAULT_IRQ, 1);
+	VXD_WR_REG(reg_base, PVDEC_CORE, PVDEC_HOST_INT_ENA, reg);
+}
+
+static void pvdec_check_mmu_requests(void __iomem *reg_base,
+				     unsigned int mmu_checks,
+				     unsigned int max_attempts)
+{
+	unsigned int reg, i, checks = 0;
+
+	for (i = 0; i < max_attempts; i++) {
+		reg = VXD_RD_REG(reg_base,
+				 IMG_VIDEO_BUS4_MMU, MMU_MEM_REQ);
+		reg = VXD_RD_REG_FIELD(reg, IMG_VIDEO_BUS4_MMU, MMU_MEM_REQ, TAG_OUTSTANDING);
+		if (reg) {
+			udelay(vxd_plat_poll_udelay);
+			continue;
+		}
+
+		/* Read READ_WORDS_OUTSTANDING */
+		reg = VXD_RD_REG(reg_base, IMG_VIDEO_BUS4_MMU, MMU_MEM_EXT_OUTSTANDING);
+		reg = VXD_RD_REG_FIELD(reg, IMG_VIDEO_BUS4_MMU, MMU_MEM_EXT_OUTSTANDING,
+				       READ_WORDS);
+		if (!reg) {
+			checks++;
+			if (checks == mmu_checks)
+				break;
+		} else { /* Reset the counter and continue */
+			checks = 0;
+		}
+	}
+
+	if (checks != mmu_checks)
+		pr_warn("Checking for MMU outstanding requests failed!\n");
+}
+
+static int pvdec_reset(void __iomem *reg_base, unsigned char skip_pipe_clocks)
+{
+	unsigned int reg = 0;
+	unsigned char pipe, num_ent_pipes, num_pix_pipes;
+	unsigned int core_id, pvdec_timeout;
+
+	core_id = VXD_RD_REG(reg_base, PVDEC_CORE, PVDEC_CORE_ID);
+
+	num_ent_pipes = VXD_RD_REG_FIELD(core_id, PVDEC_CORE, PVDEC_CORE_ID, ENT_PIPES);
+	num_pix_pipes = VXD_RD_REG_FIELD(core_id, PVDEC_CORE, PVDEC_CORE_ID, PIX_PIPES);
+
+	if (num_pix_pipes == 0 || num_pix_pipes > VXD_MAX_PIPES)
+		return -EINVAL;
+
+	/* Clear interrupt enabled flag */
+	VXD_WR_REG(reg_base, PVDEC_CORE, PVDEC_HOST_INT_ENA, 0);
+
+	/* Clear any pending interrupt flags */
+	reg = 0;
+	reg = VXD_WR_REG_FIELD(reg, PVDEC_CORE, PVDEC_INT_CLEAR, IRQ_CLEAR, 0xFFFF);
+	VXD_WR_REG(reg_base, PVDEC_CORE, PVDEC_INT_CLEAR, reg);
+
+	/* Turn all clocks on - don't touch reserved bits! */
+	pvdec_set_clocks(reg_base, 0xFFFF0113);
+
+	if (!skip_pipe_clocks) {
+		for (pipe = 1; pipe <= num_pix_pipes; pipe++) {
+			pvdec_select_pipe(reg_base, pipe);
+			/* Turn all available clocks on - skip reserved bits! */
+			VXD_WR_REG(reg_base, PVDEC_PIXEL, PIXEL_MAN_CLK_ENA, 0xFFBF0FFF);
+		}
+
+		for (pipe = 1; pipe <= num_ent_pipes; pipe++) {
+			pvdec_select_pipe(reg_base, pipe);
+			/* Turn all available clocks on - skip reserved bits! */
+			VXD_WR_REG(reg_base, PVDEC_ENTROPY, ENTROPY_MAN_CLK_ENA, 0x5);
+		}
+	}
+
+	/* 1st MMU outstanding requests check */
+	pvdec_check_mmu_requests(reg_base, 1000, 2000);
+
+	/* Make sure MMU is not under reset MMU_SOFT_RESET -> 0 */
+	pvdec_timeout = PVDEC_TIMEOUT_COUNTER;
+	do {
+		reg = VXD_RD_REG(reg_base, IMG_VIDEO_BUS4_MMU, MMU_CONTROL1);
+		reg = VXD_RD_REG_FIELD(reg, IMG_VIDEO_BUS4_MMU, MMU_CONTROL1, MMU_SOFT_RESET);
+		udelay(vxd_plat_poll_udelay);
+		pvdec_timeout--;
+	} while (reg != 0 && pvdec_timeout != 0);
+
+	if (pvdec_timeout == 0) {
+		pr_err("Waiting for MMU soft reset(1) timed out!\n");
+		pvdec_mtx_status_dump(reg_base, NULL);
+	}
+
+	/* Write 1 to MMU_PAUSE_SET */
+	reg = 0;
+	reg = VXD_WR_REG_FIELD(reg, IMG_VIDEO_BUS4_MMU, MMU_CONTROL1, MMU_PAUSE_SET, 1);
+	VXD_WR_REG(reg_base, IMG_VIDEO_BUS4_MMU, MMU_CONTROL1, reg);
+
+	/* 2nd MMU outstanding requests check */
+	pvdec_check_mmu_requests(reg_base, 100, 1000);
+
+	/* Issue software reset for all but MMU/core */
+	reg = 0;
+	reg = VXD_WR_REG_FIELD(reg, PVDEC_CORE, PVDEC_SOFT_RST, PVDEC_PIXEL_PROC_SOFT_RST, 0xFF);
+	reg = VXD_WR_REG_FIELD(reg, PVDEC_CORE, PVDEC_SOFT_RST, PVDEC_ENTROPY_SOFT_RST, 0xFF);
+	VXD_WR_REG(reg_base, PVDEC_CORE, PVDEC_SOFT_RST, reg);
+
+	VXD_RD_REG(reg_base, PVDEC_CORE, PVDEC_SOFT_RST);
+	VXD_WR_REG(reg_base, PVDEC_CORE, PVDEC_SOFT_RST, 0);
+
+	/* Write 1 to MMU_PAUSE_CLEAR in MMU_CONTROL1 reg */
+	reg = 0;
+	reg = VXD_WR_REG_FIELD(reg, IMG_VIDEO_BUS4_MMU, MMU_CONTROL1, MMU_PAUSE_CLEAR, 1);
+	VXD_WR_REG(reg_base, IMG_VIDEO_BUS4_MMU, MMU_CONTROL1, reg);
+
+	/* Confirm MMU_PAUSE_SET is cleared */
+	pvdec_timeout = PVDEC_TIMEOUT_COUNTER;
+	do {
+		reg = VXD_RD_REG(reg_base, IMG_VIDEO_BUS4_MMU, MMU_CONTROL1);
+		reg = VXD_RD_REG_FIELD(reg, IMG_VIDEO_BUS4_MMU, MMU_CONTROL1, MMU_PAUSE_SET);
+		udelay(vxd_plat_poll_udelay);
+		pvdec_timeout--;
+	} while (reg != 0 && pvdec_timeout != 0);
+
+	if (pvdec_timeout == 0) {
+		pr_err("Waiting for MMU pause clear timed out!\n");
+		pvdec_mtx_status_dump(reg_base, NULL);
+		return -EIO;
+	}
+
+	/* Issue software reset for MMU */
+	reg = 0;
+	reg = VXD_WR_REG_FIELD(reg, IMG_VIDEO_BUS4_MMU, MMU_CONTROL1, MMU_SOFT_RESET, 1);
+	VXD_WR_REG(reg_base, IMG_VIDEO_BUS4_MMU, MMU_CONTROL1, reg);
+
+	/* Wait until MMU_SOFT_RESET -> 0 */
+	pvdec_timeout = PVDEC_TIMEOUT_COUNTER;
+	do {
+		reg = VXD_RD_REG(reg_base, IMG_VIDEO_BUS4_MMU, MMU_CONTROL1);
+		reg = VXD_RD_REG_FIELD(reg, IMG_VIDEO_BUS4_MMU, MMU_CONTROL1, MMU_SOFT_RESET);
+		udelay(vxd_plat_poll_udelay);
+		pvdec_timeout--;
+	} while (reg != 0 && pvdec_timeout != 0);
+
+	if (pvdec_timeout == 0) {
+		pr_err("Waiting for MMU soft reset(2) timed out!\n");
+		pvdec_mtx_status_dump(reg_base, NULL);
+	}
+
+	/* Issue software reset for entire PVDEC */
+	reg = 0;
+	reg = VXD_WR_REG_FIELD(reg, PVDEC_CORE, PVDEC_SOFT_RST, PVDEC_SOFT_RST, 0x1);
+	VXD_WR_REG(reg_base, PVDEC_CORE, PVDEC_SOFT_RST, reg);
+
+	/* Waiting for reset bit to be cleared */
+	pvdec_timeout = PVDEC_TIMEOUT_COUNTER;
+	do {
+		reg = VXD_RD_REG(reg_base, PVDEC_CORE, PVDEC_SOFT_RST);
+		reg = VXD_RD_REG_FIELD(reg, PVDEC_CORE, PVDEC_SOFT_RST, PVDEC_SOFT_RST);
+		udelay(vxd_plat_poll_udelay);
+		pvdec_timeout--;
+	} while (reg != 0 && pvdec_timeout != 0);
+
+	if (pvdec_timeout == 0) {
+		pr_err("Waiting for PVDEC soft reset timed out!\n");
+		pvdec_mtx_status_dump(reg_base, NULL);
+		return -EIO;
+	}
+
+	/* Clear interrupt enabled flag */
+	VXD_WR_REG(reg_base, PVDEC_CORE, PVDEC_HOST_INT_ENA, 0);
+
+	/* Clear any pending interrupt flags */
+	reg = 0;
+	reg = VXD_WR_REG_FIELD(reg, PVDEC_CORE, PVDEC_INT_CLEAR, IRQ_CLEAR, 0xFFFF);
+	VXD_WR_REG(reg_base, PVDEC_CORE, PVDEC_INT_CLEAR, reg);
+	return 0;
+}
+
+static int pvdec_get_properties(void __iomem *reg_base,
+				struct vxd_core_props *props)
+{
+	unsigned int major, minor, maint, group_id, core_id;
+	unsigned char num_pix_pipes, pipe;
+
+	if (!props)
+		return -EINVAL;
+
+	/* PVDEC Core Revision Information */
+	props->core_rev = VXD_RD_REG(reg_base, PVDEC_CORE, PVDEC_CORE_REV);
+	major = VXD_RD_REG_FIELD(props->core_rev, PVDEC_CORE, PVDEC_CORE_REV, PVDEC_MAJOR_REV);
+	minor = VXD_RD_REG_FIELD(props->core_rev, PVDEC_CORE, PVDEC_CORE_REV, PVDEC_MINOR_REV);
+	maint = VXD_RD_REG_FIELD(props->core_rev, PVDEC_CORE, PVDEC_CORE_REV, PVDEC_MAINT_REV);
+
+	/* Core ID */
+	props->pvdec_core_id = VXD_RD_REG(reg_base, PVDEC_CORE, PVDEC_CORE_ID);
+	group_id = VXD_RD_REG_FIELD(props->pvdec_core_id, PVDEC_CORE, PVDEC_CORE_ID, GROUP_ID);
+	core_id = VXD_RD_REG_FIELD(props->pvdec_core_id, PVDEC_CORE, PVDEC_CORE_ID, CORE_ID);
+
+	/* Ensure that the core is IMG Video Decoder (PVDEC). */
+	if (group_id != 3 || core_id != 3) {
+		pr_err("Wrong core revision %d.%d.%d !!!\n", major, minor, maint);
+		return -EIO;
+	}
+
+	props->mmu_config0 = VXD_RD_REG(reg_base, IMG_VIDEO_BUS4_MMU, MMU_CONFIG0);
+	props->mmu_config1 = VXD_RD_REG(reg_base, IMG_VIDEO_BUS4_MMU, MMU_CONFIG1);
+
+	num_pix_pipes = VXD_NUM_PIX_PIPES(*props);
+
+	if (unlikely(num_pix_pipes > VXD_MAX_PIPES)) {
+		pr_warn("Too many pipes detected!\n");
+		num_pix_pipes = VXD_MAX_PIPES;
+	}
+
+	for (pipe = 1; pipe <= num_pix_pipes; ++pipe) {
+		pvdec_select_pipe(reg_base, pipe);
+		if (pipe < VXD_MAX_PIPES) {
+			props->pixel_pipe_cfg[pipe - 1] =
+				VXD_RD_REG(reg_base, PVDEC_PIXEL, PIXEL_PIPE_CONFIG);
+			props->pixel_misc_cfg[pipe - 1] =
+				VXD_RD_REG(reg_base, PVDEC_PIXEL, PIXEL_MISC_CONFIG);
+			/*
+			 * Detect pipe access problems.
+			 * Pipe config shall always indicate
+			 * a non zero value (at least one standard supported)!
+			 */
+			if (!props->pixel_pipe_cfg[pipe - 1])
+				pr_warn("Pipe config info is wrong!\n");
+		}
+	}
+
+	pvdec_select_pipe(reg_base, 1);
+	props->pixel_max_frame_cfg = VXD_RD_REG(reg_base, PVDEC_PIXEL, MAX_FRAME_CONFIG);
+
+	{
+		unsigned int fifo_ctrl = VXD_RD_REG(reg_base, PVDEC_CORE, PROC_DBG_FIFO_CTRL0);
+
+		props->dbg_fifo_size = VXD_RD_REG_FIELD(fifo_ctrl,
+							PVDEC_CORE,
+							PROC_DBG_FIFO_CTRL0,
+							PROC_DBG_FIFO_SIZE);
+	}
+
+	return 0;
+}
+
+int vxd_pvdec_init(const void *dev, void __iomem *reg_base)
+{
+	int ret;
+
+#ifdef DEBUG_DECODER_DRIVER
+	dev_dbg(dev, "%s: trying to reset VXD, reg base: %p\n", __func__, reg_base);
+#endif
+
+	ret = pvdec_enable_clocks(reg_base);
+	if (ret) {
+		dev_err(dev, "%s: failed to enable clocks!\n", __func__);
+		return ret;
+	}
+
+	ret = pvdec_reset(reg_base, FALSE);
+	if (ret) {
+		dev_err(dev, "%s: VXD reset failed!\n", __func__);
+		return ret;
+	}
+
+	pvdec_ena_mtx_int(reg_base);
+
+	return 0;
+}
+
+/* Send <msg_size> dwords long message */
+int vxd_pvdec_send_msg(const void *dev,
+		       void __iomem *reg_base,
+		       unsigned int *msg,
+		       unsigned long msg_size,
+		       unsigned short msg_id,
+		       struct vxd_dev *ctx)
+{
+	int ret, to_mtx_off; /* offset in dwords */
+	unsigned int wr_idx, rd_idx; /* indicies in dwords */
+	unsigned long to_mtx_size; /* size in dwords */
+	unsigned int msg_wrd;
+	struct timespec64 time;
+	static int cnt;
+
+	ktime_get_real_ts64(&time);
+
+	ctx->time_fw[cnt].start_time = timespec64_to_ns((const struct timespec64 *)&time);
+	ctx->time_fw[cnt].id = msg_id;
+	cnt++;
+
+	if (cnt >= ARRAY_SIZE(ctx->time_fw))
+		cnt = 0;
+
+	ret = pvdec_get_to_mtx_cfg(reg_base, &to_mtx_size, &to_mtx_off, &wr_idx, &rd_idx);
+	if (ret) {
+		dev_err(dev, "%s: failed to obtain mtx ring buffer config!\n", __func__);
+		return ret;
+	}
+
+	/* populate the size and id fields in the message header */
+	msg_wrd = VXD_RD_MSG_WRD(msg, PVDEC_FW, DEVA_GENMSG);
+	msg_wrd = VXD_WR_REG_FIELD(msg_wrd, PVDEC_FW, DEVA_GENMSG, MSG_SIZE, msg_size);
+	msg_wrd = VXD_WR_REG_FIELD(msg_wrd, PVDEC_FW, DEVA_GENMSG, MSG_ID, msg_id);
+	VXD_WR_MSG_WRD(msg, PVDEC_FW, DEVA_GENMSG, msg_wrd);
+
+#ifdef DEBUG_DECODER_DRIVER
+	dev_dbg(dev, "%s: [msg out] size: %zu, id: 0x%x, type: 0x%x\n", __func__, msg_size, msg_id,
+		VXD_RD_REG_FIELD(msg_wrd, PVDEC_FW, DEVA_GENMSG, MSG_TYPE));
+	dev_dbg(dev, "%s: to_mtx: (%zu @ %d), wr_idx: %d, rd_idx: %d\n",
+		__func__, to_mtx_size, to_mtx_off, wr_idx, rd_idx);
+#endif
+
+	ret = pvdec_check_comms_space(reg_base, msg_size, FALSE);
+	if (ret) {
+		dev_err(dev, "%s: invalid message or not enough space (%d)!\n", __func__, ret);
+		return ret;
+	}
+
+	ret = pvdec_write_vlr(reg_base, msg, msg_size, to_mtx_off + wr_idx);
+	if (ret) {
+		dev_err(dev, "%s: failed to write msg to vlr!\n", __func__);
+		return ret;
+	}
+
+	wr_idx += msg_size;
+	if (wr_idx == to_mtx_size)
+		wr_idx = 0;
+	VXD_WR_REG_ABS(reg_base, VLR_OFFSET +
+		PVDEC_FW_TO_MTX_WR_IDX_OFFSET, wr_idx);
+
+	pvdec_kick_mtx(reg_base);
+
+	return 0;
+}
+
+/* Fetch size (in dwords) of message pending from MTX */
+int vxd_pvdec_pend_msg_info(const void *dev, void __iomem *reg_base,
+			    unsigned long *size,
+			    unsigned short *msg_id,
+			    unsigned char *not_last_msg)
+{
+	int ret, to_host_off; /* offset in dwords */
+	unsigned int wr_idx, rd_idx; /* indicies in dwords */
+	unsigned long to_host_size; /* size in dwords */
+	unsigned int val = 0;
+
+	ret = pvdec_get_to_host_cfg(reg_base, &to_host_size, &to_host_off, &wr_idx, &rd_idx);
+	if (ret) {
+		dev_err(dev, "%s: failed to obtain host ring buffer config!\n", __func__);
+		return ret;
+	}
+
+#ifdef DEBUG_DECODER_DRIVER
+	dev_dbg(dev, "%s: to host: (%zu @ %d), wr: %u, rd: %u\n", __func__,
+		to_host_size, to_host_off, wr_idx, rd_idx);
+#endif
+
+	if (wr_idx == rd_idx) {
+		*size = 0;
+		*msg_id = 0;
+		return 0;
+	}
+
+	ret = pvdec_read_vlr(reg_base, &val, 1, to_host_off + rd_idx);
+	if (ret) {
+		dev_err(dev, "%s: failed to read first word!\n", __func__);
+		return ret;
+	}
+
+	*size = VXD_RD_REG_FIELD(val, PVDEC_FW, DEVA_GENMSG, MSG_SIZE);
+	*msg_id = VXD_RD_REG_FIELD(val, PVDEC_FW, DEVA_GENMSG, MSG_ID);
+	*not_last_msg = VXD_RD_REG_FIELD(val, PVDEC_FW, DEVA_GENMSG, NOT_LAST_MSG);
+
+#ifdef DEBUG_DECODER_DRIVER
+	dev_dbg(dev, "%s: [msg in] rd_idx: %d, size: %zu, id: 0x%04x, type: 0x%x\n",
+		__func__, rd_idx, *size, *msg_id,
+		VXD_RD_REG_FIELD(val, PVDEC_FW, DEVA_GENMSG, MSG_TYPE));
+#endif
+
+	return 0;
+}
+
+/*
+ * Receive message from the MTX and place it in a <buf_size> dwords long
+ * buffer. If the provided buffer is too small to hold the message, only part
+ * of it will be placed in a buffer, but the ring buffer read index will be
+ * moved so that message is no longer available.
+ */
+int vxd_pvdec_recv_msg(const void *dev, void __iomem *reg_base,
+		       unsigned int *buf,
+		       unsigned long buf_size,
+		       struct vxd_dev *vxd)
+{
+	int ret, to_host_off; /* offset in dwords */
+	unsigned int wr_idx, rd_idx; /* indicies in dwords */
+	unsigned long to_host_size, msg_size, to_read; /* sizes in dwords */
+	unsigned int val = 0;
+	struct timespec64 time;
+	unsigned short msg_id;
+	int loop;
+
+	ret = pvdec_get_to_host_cfg(reg_base, &to_host_size,
+				    &to_host_off, &wr_idx, &rd_idx);
+	if (ret) {
+		dev_err(dev, "%s: failed to obtain host ring buffer config!\n", __func__);
+		return ret;
+	}
+
+#ifdef DEBUG_DECODER_DRIVER
+	dev_dbg(dev, "%s: to host: (%zu @ %d), wr: %u, rd: %u\n", __func__,
+		to_host_size, to_host_off, wr_idx, rd_idx);
+#endif
+
+	/* Obtain the message size */
+	ret = pvdec_read_vlr(reg_base, &val, 1, to_host_off + rd_idx);
+	if (ret) {
+		dev_err(dev, "%s: failed to read first word!\n", __func__);
+		return ret;
+	}
+	msg_size = VXD_RD_REG_FIELD(val, PVDEC_FW, DEVA_GENMSG, MSG_SIZE);
+
+	to_read = (msg_size > buf_size) ? buf_size : msg_size;
+
+	/* Does the message wrap? */
+	if (to_read + rd_idx > to_host_size) {
+		unsigned long chunk_size = to_host_size - rd_idx;
+
+		ret = pvdec_read_vlr(reg_base, buf, chunk_size, to_host_off + rd_idx);
+		if (ret) {
+			dev_err(dev, "%s: failed to read chunk before wrap!\n", __func__);
+			return ret;
+		}
+		to_read -= chunk_size;
+		buf += chunk_size;
+		rd_idx = 0;
+		msg_size -= chunk_size;
+	}
+
+	/*
+	 * If the message wrapped, read the second chunk.
+	 * If it didn't, read first and only chunk
+	 */
+	ret = pvdec_read_vlr(reg_base, buf, to_read, to_host_off + rd_idx);
+	if (ret) {
+		dev_err(dev, "%s: failed to read message from vlr!\n", __func__);
+		return ret;
+	}
+
+	/* Update read index in the ring buffer */
+	rd_idx = (rd_idx + msg_size) % to_host_size;
+	VXD_WR_REG_ABS(reg_base, VLR_OFFSET +
+		PVDEC_FW_TO_HOST_RD_IDX_OFFSET, rd_idx);
+
+	msg_id = VXD_RD_REG_FIELD(val, PVDEC_FW, DEVA_GENMSG, MSG_ID);
+
+	ktime_get_real_ts64(&time);
+	for (loop = 0; loop < ARRAY_SIZE(vxd->time_fw); loop++) {
+		if (vxd->time_fw[loop].id == msg_id) {
+			vxd->time_fw[loop].end_time =
+				timespec64_to_ns((const struct timespec64 *)&time);
+#ifdef DEBUG_DECODER_DRIVER
+			dev_info(dev, "fw decode time is %llu us for msg_id x%0x\n",
+				 div_s64(vxd->time_fw[loop].end_time -
+				 vxd->time_fw[loop].start_time, 1000), msg_id);
+#endif
+					break;
+		}
+	}
+
+	if (loop == ARRAY_SIZE(vxd->time_fw))
+		dev_err(dev, "fw decode time for msg_id x%0x is not measured\n", msg_id);
+
+	return 0;
+}
+
+int vxd_pvdec_check_fw_status(const void *dev, void __iomem *reg_base)
+{
+	int ret;
+	unsigned int val = 0;
+
+	/* Obtain current fw status */
+	ret = pvdec_read_vlr(reg_base, &val, 1, PVDEC_FW_STATUS_OFFSET);
+	if (ret) {
+		dev_err(dev, "%s: failed to read fw status!\n", __func__);
+		return ret;
+	}
+
+	/* Check for fatal condition */
+	if (val == PVDEC_FW_STATUS_PANIC  || val == PVDEC_FW_STATUS_ASSERT ||
+	    val == PVDEC_FW_STATUS_SO)
+		return -1;
+
+	return 0;
+}
+
+static int pvdec_send_init_msg(const void *dev,
+			       void __iomem *reg_base,
+			       struct vxd_ena_params *ena_params)
+{
+	unsigned short msg_id = 0;
+	unsigned int msg[PVDEC_FW_DEVA_INIT_MSG_WRDS] = { 0 }, msg_wrd = 0;
+	struct vxd_dev *vxd;
+	int ret;
+
+#ifdef DEBUG_DECODER_DRIVER
+	dev_dbg(dev, "%s: rendec: %d@0x%x, crc: 0x%x\n", __func__,
+		ena_params->rendec_size, ena_params->rendec_addr, ena_params->crc);
+#endif
+
+	vxd = kzalloc(sizeof(*vxd), GFP_KERNEL);
+	if (!vxd)
+		return -1;
+
+	/* message type */
+	msg_wrd = VXD_WR_REG_FIELD(msg_wrd, PVDEC_FW, DEVA_GENMSG, MSG_TYPE,
+				   PVDEC_FW_MSG_TYPE_INIT);
+	VXD_WR_MSG_WRD(msg, PVDEC_FW, DEVA_GENMSG, msg_wrd);
+
+	/* rendec address */
+	VXD_WR_MSG_WRD(msg, PVDEC_FW_DEVA_INIT, RENDEC_ADDR0, ena_params->rendec_addr);
+
+	/* rendec size */
+	msg_wrd = 0;
+	msg_wrd = VXD_WR_REG_FIELD(msg_wrd, PVDEC_FW, DEVA_INIT, RENDEC_SIZE0,
+				   ena_params->rendec_size);
+	VXD_WR_MSG_WRD(msg, PVDEC_FW_DEVA_INIT, RENDEC_SIZE0, msg_wrd);
+
+	/* HEVC configuration */
+	msg_wrd = 0;
+	msg_wrd = VXD_WR_REG_FIELD(msg_wrd, PVDEC_FW, DEVA_INIT,
+				   HEVC_CFG_MAX_H_FOR_PIPE_WAIT, 0xFFFF);
+	VXD_WR_MSG_WRD(msg, PVDEC_FW_DEVA_INIT, HEVC_CFG, msg_wrd);
+
+	/* signature select */
+	VXD_WR_MSG_WRD(msg, PVDEC_FW_DEVA_INIT, SIG_SELECT, ena_params->crc);
+
+	/* partial frame notification timer divider */
+	msg_wrd = 0;
+	msg_wrd = VXD_WR_REG_FIELD(msg_wrd, PVDEC_FW, DEVA_INIT, PFNT_DIV, PVDEC_PFNT_DIV);
+	VXD_WR_MSG_WRD(msg, PVDEC_FW_DEVA_INIT, PFNT_DIV, msg_wrd);
+
+	/* firmware watchdog timeout value */
+	msg_wrd = VXD_WR_REG_FIELD(msg_wrd, PVDEC_FW, DEVA_INIT, FWWDT_MS, ena_params->fwwdt_ms);
+	VXD_WR_MSG_WRD(msg, PVDEC_FW_DEVA_INIT, FWWDT_MS, msg_wrd);
+
+	ret = vxd_pvdec_send_msg(dev, reg_base, msg, ARRAY_SIZE(msg), msg_id, vxd);
+	kfree(vxd);
+
+	return ret;
+}
+
+int vxd_pvdec_ena(const void *dev, void __iomem *reg_base,
+		  struct vxd_ena_params *ena_params,
+		  struct vxd_fw_hdr *fw_hdr,
+		  unsigned int *freq_khz)
+{
+	int ret;
+	unsigned int mtx_ram_size = 0;
+	unsigned char dma_channel = 0;
+
+	ret = vxd_pvdec_init(dev, reg_base);
+	if (ret) {
+		dev_err(dev, "%s: PVDEC init failed!\n", __func__);
+		return ret;
+	}
+
+	ret = pvdec_get_mtx_ram_size(reg_base, &mtx_ram_size);
+	if (ret) {
+		dev_err(dev, "%s: failed to get MTX RAM size!\n", __func__);
+		return ret;
+	}
+
+	if (mtx_ram_size < fw_hdr->core_size) {
+		dev_err(dev, "%s: FW larger than MTX RAM size (%u < %d)!\n",
+			__func__, mtx_ram_size, fw_hdr->core_size);
+		return -EINVAL;
+	}
+
+	/* Apply pre boot settings - if any */
+	pvdec_pre_boot_setup(dev, reg_base, ena_params);
+
+	pvdec_prep_fw_upload(dev, reg_base, ena_params, dma_channel);
+
+	ret = pvdec_start_fw_dma(dev, reg_base, dma_channel, fw_hdr->core_size, freq_khz);
+
+	if (ret) {
+		dev_err(dev, "%s: failed to load FW! (%d)", __func__, ret);
+		pvdec_mtx_status_dump(reg_base, NULL);
+		return ret;
+	}
+
+	/* Apply final settings - if any */
+	pvdec_post_boot_setup(dev, reg_base, *freq_khz);
+
+	ret = pvdec_poll_fw_boot(reg_base, &ena_params->boot_poll);
+	if (ret) {
+		dev_err(dev, "%s: FW failed to boot! (%d)!\n", __func__, ret);
+		return ret;
+	}
+
+	ret = pvdec_send_init_msg(dev, reg_base, ena_params);
+	if (ret) {
+		dev_err(dev, "%s: failed to send init message! (%d)!\n", __func__, ret);
+		return ret;
+	}
+
+	return 0;
+}
+
+int vxd_pvdec_dis(const void *dev, void __iomem *reg_base)
+{
+	int ret = pvdec_enable_clocks(reg_base);
+
+	if (ret) {
+		dev_err(dev, "%s: failed to enable clocks! (%d)\n", __func__, ret);
+		return ret;
+	}
+
+	ret = pvdec_reset(reg_base, TRUE);
+	if (ret) {
+		dev_err(dev, "%s: VXD reset failed! (%d)\n", __func__, ret);
+		return ret;
+	}
+
+	ret = pvdec_disable_clocks(reg_base);
+	if (ret) {
+		dev_err(dev, "%s: VXD disable clocks failed! (%d)\n", __func__, ret);
+		return ret;
+	}
+
+	return 0;
+}
+
+/*
+ * Invalidate VXD's MMU cache.
+ */
+int vxd_pvdec_mmu_flush(const void *dev, void __iomem *reg_base)
+{
+	unsigned int reg = VXD_RD_REG(reg_base, IMG_VIDEO_BUS4_MMU, MMU_CONTROL1);
+
+	if (reg == PVDEC_INVALID_HW_STATE) {
+		dev_err(dev, "%s: invalid HW state!\n", __func__);
+		return -EIO;
+	}
+
+	reg = VXD_WR_REG_FIELD(reg, IMG_VIDEO_BUS4_MMU, MMU_CONTROL1, MMU_INVALDC, 0xF);
+	VXD_WR_REG(reg_base, IMG_VIDEO_BUS4_MMU, MMU_CONTROL1, reg);
+
+#ifdef DEBUG_DECODER_DRIVER
+	dev_dbg(dev, "%s: device MMU cache invalidated!\n", __func__);
+#endif
+
+	return 0;
+}
+
+irqreturn_t vxd_pvdec_clear_int(void __iomem *reg_base, unsigned int *irq_status)
+{
+	irqreturn_t ret = IRQ_NONE;
+	unsigned int enabled;
+	unsigned int status = VXD_RD_REG(reg_base, PVDEC_CORE, PVDEC_INT_STAT);
+
+	enabled = VXD_RD_REG(reg_base, PVDEC_CORE, PVDEC_HOST_INT_ENA);
+
+	status &= enabled;
+	/* Store the last irq status */
+	*irq_status |= status;
+
+	if (status & (PVDEC_CORE_PVDEC_INT_STAT_HOST_MMU_FAULT_IRQ_MASK |
+		PVDEC_CORE_PVDEC_INT_STAT_HOST_PROC_IRQ_MASK))
+		ret = IRQ_WAKE_THREAD;
+
+	/* Disable MMU interrupts - clearing is not enough */
+	if (status & PVDEC_CORE_PVDEC_INT_STAT_HOST_MMU_FAULT_IRQ_MASK) {
+		enabled &= ~PVDEC_CORE_PVDEC_INT_STAT_HOST_MMU_FAULT_IRQ_MASK;
+		VXD_WR_REG(reg_base, PVDEC_CORE, PVDEC_HOST_INT_ENA, enabled);
+	}
+
+	VXD_WR_REG(reg_base, PVDEC_CORE, PVDEC_INT_CLEAR, status);
+
+	return ret;
+}
+
+/*
+ * Check if there's enough space in comms RAM to submit <msg_size> dwords long
+ * message. This function also submits a padding message if it will be
+ * necessary for this particular message.
+ *
+ * return 0 if there is enough space,
+ * return -EBUSY if there is not enough space,
+ * return another fault code in case of an error.
+ */
+int vxd_pvdec_msg_fit(const void *dev, void __iomem *reg_base, unsigned long msg_size)
+{
+	int ret = pvdec_check_comms_space(reg_base, msg_size, TRUE);
+
+	/*
+	 * In specific environment, when to_mtx buffer is small, and messages
+	 * the userspace is submitting are large (e.g. FWBSP flow), it's
+	 * possible that firmware will consume the padding message sent by
+	 * vxd_pvdec_msg_fit() immediately. Retry the check.
+	 */
+	if (ret == -EBUSY) {
+		unsigned int flags = VXD_RD_REG_ABS(reg_base,
+				VLR_OFFSET + PVDEC_FW_FLAGS_OFFSET) |
+			PVDEC_FWFLAG_FAKE_COMPLETION;
+
+#ifdef DEBUG_DECODER_DRIVER
+		dev_dbg(dev, "comms space full, asking fw to send empty msg when space is available");
+#endif
+
+		VXD_WR_REG_ABS(reg_base, VLR_OFFSET + PVDEC_FW_FLAGS_OFFSET, flags);
+		ret = pvdec_check_comms_space(reg_base, msg_size, FALSE);
+	}
+
+	return ret;
+}
+
+void vxd_pvdec_get_state(const void *dev, void __iomem *reg_base,
+			 unsigned int num_pipes,
+			 struct vxd_hw_state *state)
+{
+	unsigned char pipe;
+#ifdef DEBUG_DECODER_DRIVER
+	unsigned int state_cfg = VXD_RD_REG_ABS(reg_base, (VLR_OFFSET +
+			PVDEC_FW_STATE_BUF_CFG_OFFSET));
+
+	unsigned short state_size = PVDEC_FW_COM_BUF_SIZE(state_cfg);
+	unsigned short state_off = PVDEC_FW_COM_BUF_OFF(state_cfg);
+
+	/*
+	 * The generic fw progress counter
+	 * is the first element in the fw state
+	 */
+	dev_dbg(dev, "%s: state off: 0x%x, size: 0x%x\n", __func__, state_off, state_size);
+	state->fw_counter = VXD_RD_REG_ABS(reg_base, (VLR_OFFSET + state_off));
+	dev_dbg(dev, "%s: fw_counter: 0x%x\n", __func__, state->fw_counter);
+#endif
+
+	/* We just combine the macroblocks being processed by the HW */
+	for (pipe = 0; pipe < num_pipes; pipe++) {
+		unsigned int p_off = VXD_GET_PIPE_OFF(num_pipes, pipe + 1);
+		unsigned int reg_val;
+
+		/* Front-end */
+		unsigned int reg_off = VXD_GET_REG_OFF(PVDEC_ENTROPY, ENTROPY_LAST_MB);
+
+		state->fe_status[pipe] = VXD_RD_REG_ABS(reg_base, reg_off + p_off);
+
+		reg_off = VXD_GET_REG_OFF(MSVDX_VEC, VEC_ENTDEC_INFORMATION);
+		state->fe_status[pipe] |= VXD_RD_REG_ABS(reg_base, reg_off + p_off);
+
+		/* Back-end */
+		reg_off = VXD_GET_REG_OFF(PVDEC_VEC_BE, VEC_BE_STATUS);
+		state->be_status[pipe] = VXD_RD_REG_ABS(reg_base, reg_off + p_off);
+		reg_off = VXD_GET_REG_OFF(MSVDX_VDMC, VDMC_MACROBLOCK_NUMBER);
+		state->be_status[pipe] |= VXD_RD_REG_ABS(reg_base, reg_off + p_off);
+
+		/*
+		 * Take DMAC channels 2/3 into consideration to cover
+		 * parser progress on SR1/2
+		 */
+		reg_off = VXD_GET_RPT_REG_OFF(DMAC, DMAC_COUNT, 2);
+		reg_val = VXD_RD_REG_ABS(reg_base, reg_off + p_off);
+		state->dmac_status[pipe][0] = VXD_RD_REG_FIELD(reg_val, DMAC, DMAC_COUNT, CNT);
+		reg_off = VXD_GET_RPT_REG_OFF(DMAC, DMAC_COUNT, 3);
+		reg_val = VXD_RD_REG_ABS(reg_base, reg_off + p_off);
+		state->dmac_status[pipe][1] = VXD_RD_REG_FIELD(reg_val, DMAC, DMAC_COUNT, CNT);
+	}
+}
+
+/*
+ * Check for the source of the last interrupt.
+ *
+ * return 0 if nothing serious happened,
+ * return -EFAULT if there was a critical interrupt detected.
+ */
+int vxd_pvdec_check_irq(const void *dev, void __iomem *reg_base, unsigned int irq_status)
+{
+	if (irq_status & PVDEC_CORE_PVDEC_INT_STAT_HOST_MMU_FAULT_IRQ_MASK) {
+		unsigned int status0 =
+			VXD_RD_REG(reg_base, IMG_VIDEO_BUS4_MMU, MMU_STATUS0);
+		unsigned int status1 =
+			VXD_RD_REG(reg_base, IMG_VIDEO_BUS4_MMU, MMU_STATUS1);
+
+		unsigned int addr = VXD_RD_REG_FIELD(status0, IMG_VIDEO_BUS4_MMU,
+				MMU_STATUS0, MMU_FAULT_ADDR) << 12;
+		unsigned char reason = VXD_RD_REG_FIELD(status0, IMG_VIDEO_BUS4_MMU,
+				MMU_STATUS0, MMU_PF_N_RW);
+		unsigned char requestor = VXD_RD_REG_FIELD(status1, IMG_VIDEO_BUS4_MMU,
+				MMU_STATUS1, MMU_FAULT_REQ_ID);
+		unsigned char type = VXD_RD_REG_FIELD(status1, IMG_VIDEO_BUS4_MMU,
+				MMU_STATUS1, MMU_FAULT_RNW);
+		unsigned char secure = VXD_RD_REG_FIELD(status0, IMG_VIDEO_BUS4_MMU,
+				MMU_STATUS0, MMU_SECURE_FAULT);
+
+#ifdef DEBUG_DECODER_DRIVER
+		dev_dbg(dev, "%s: MMU Page Fault s0:%08x s1:%08x", __func__, status0, status1);
+#endif
+
+		dev_err(dev, "%s: MMU %s fault from %s while %s @ 0x%08X", __func__,
+			(reason) ? "Page" : "Protection",
+			(requestor & (0x1)) ? "dmac" :
+			(requestor & (0x2)) ? "vec"  :
+			(requestor & (0x4)) ? "vdmc" :
+			(requestor & (0x8)) ? "vdeb" : "unknown source",
+			(type) ? "reading" : "writing", addr);
+
+		if (secure)
+			dev_err(dev, "%s: MMU security policy violation detected!", __func__);
+
+		return -EFAULT;
+	}
+
+	return 0;
+}
+
+/*
+ * This functions enables the clocks, fetches the core properties, stores them
+ * in the <props> structure and DISABLES the clocks. Do not call when hardware
+ * is busy!
+ */
+int vxd_pvdec_get_props(const void *dev, void __iomem *reg_base, struct vxd_core_props *props)
+{
+#ifdef DEBUG_DECODER_DRIVER
+	unsigned char num_pix_pipes, pipe;
+#endif
+	int ret = pvdec_enable_clocks(reg_base);
+
+	if (ret) {
+		dev_err(dev, "%s: failed to enable clocks!\n", __func__);
+		return ret;
+	}
+
+	ret = pvdec_get_mtx_ram_size(reg_base, &props->mtx_ram_size);
+	if (ret) {
+		dev_err(dev, "%s: failed to get MTX ram size!\n", __func__);
+		return ret;
+	}
+
+	ret = pvdec_get_properties(reg_base, props);
+	if (ret) {
+		dev_err(dev, "%s: failed to get VXD props!\n", __func__);
+		return ret;
+	}
+
+	if (pvdec_disable_clocks(reg_base))
+		dev_err(dev, "%s: failed to disable clocks!\n", __func__);
+
+#ifdef DEBUG_DECODER_DRIVER
+	num_pix_pipes = VXD_NUM_PIX_PIPES(*props);
+
+	/* Warning already raised in pvdec_get_properties() */
+	if (unlikely(num_pix_pipes > VXD_MAX_PIPES))
+		num_pix_pipes = VXD_MAX_PIPES;
+	dev_dbg(dev, "%s: core_rev: 0x%08x\n", __func__, props->core_rev);
+	dev_dbg(dev, "%s: pvdec_core_id: 0x%08x\n", __func__, props->pvdec_core_id);
+	dev_dbg(dev, "%s: mmu_config0: 0x%08x\n", __func__, props->mmu_config0);
+	dev_dbg(dev, "%s: mmu_config1: 0x%08x\n", __func__, props->mmu_config1);
+	dev_dbg(dev, "%s: mtx_ram_size: %u\n", __func__, props->mtx_ram_size);
+	dev_dbg(dev, "%s: pix max frame: 0x%08x\n", __func__, props->pixel_max_frame_cfg);
+
+	for (pipe = 1; pipe <= num_pix_pipes; ++pipe)
+		dev_dbg(dev, "%s:  pipe %u, 0x%08x, misc 0x%08x\n",
+			__func__, pipe, props->pixel_pipe_cfg[pipe - 1],
+			props->pixel_misc_cfg[pipe - 1]);
+	dev_dbg(dev, "%s: dbg fifo size: %u\n", __func__, props->dbg_fifo_size);
+#endif
+	return 0;
+}
diff --git a/drivers/staging/media/vxd/decoder/vxd_pvdec_priv.h b/drivers/staging/media/vxd/decoder/vxd_pvdec_priv.h
new file mode 100644
index 000000000000..6cc9aef45904
--- /dev/null
+++ b/drivers/staging/media/vxd/decoder/vxd_pvdec_priv.h
@@ -0,0 +1,126 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * VXD PVDEC Private header file
+ *
+ * Copyright (c) Imagination Technologies Ltd.
+ * Copyright (c) 2021 Texas Instruments Incorporated - http://www.ti.com/
+ *
+ * Authors:
+ *	Amit Makani <amit.makani@ti.com>
+ *
+ * Re-written for upstreamimg
+ *	Sidraya Jayagond <sidraya.bj@pathpartnertech.com>
+ *	Prashanth Kumar Amai <prashanth.ka@pathpartnertech.com>
+ */
+
+#ifndef _VXD_PVDEC_PRIV_H
+#define _VXD_PVDEC_PRIV_H
+#include <linux/interrupt.h>
+
+#include "img_dec_common.h"
+#include "vxd_pvdec_regs.h"
+#include "vxd_dec.h"
+
+#ifdef ERROR_RECOVERY_SIMULATION
+/* kernel object used to debug. Declared in v4l2_int.c */
+extern struct kobject *vxd_dec_kobject;
+extern int disable_fw_irq_value;
+extern int g_module_irq;
+#endif
+
+struct vxd_boot_poll_params {
+	unsigned int msleep_cycles;
+};
+
+struct vxd_ena_params {
+	struct vxd_boot_poll_params boot_poll;
+
+	unsigned long fw_buf_size;
+	unsigned int fw_buf_virt_addr;
+	/*
+	 * VXD's MMU virtual address of a firmware
+	 * buffer.
+	 */
+	unsigned int ptd; /* Shifted physical address of PTD */
+
+	/* Required for firmware upload via registers. */
+	struct {
+		const unsigned char *buf; /* Firmware blob buffer */
+
+	} regs_data;
+
+	struct {
+		unsigned secure : 1;        /* Secure flow indicator. */
+		unsigned wait_dbg_fifo : 1; /*
+					     * Indicates that fw shall use
+					     * blocking mode when putting logs
+					     * into debug fifo
+					     */
+	};
+
+	/* Structure containing memory staller configuration */
+	struct {
+		unsigned int *data;          /* Configuration data array */
+		unsigned char size;            /* Configuration size in dwords */
+
+	} mem_staller;
+
+	unsigned int fwwdt_ms;    /* Firmware software watchdog timeout value */
+
+	unsigned int crc;         /* HW signatures to be enabled by firmware */
+	unsigned int rendec_addr; /* VXD's virtual address of a rendec buffer */
+	unsigned short rendec_size; /* Size of a rendec buffer in 4K pages */
+};
+
+int vxd_pvdec_init(const void *dev, void __iomem *reg_base);
+
+int vxd_pvdec_ena(const void *dev, void __iomem *reg_base,
+		  struct vxd_ena_params *ena_params, struct vxd_fw_hdr *hdr,
+		  unsigned int *freq_khz);
+
+int vxd_pvdec_dis(const void *dev, void __iomem *reg_base);
+
+int vxd_pvdec_mmu_flush(const void *dev, void __iomem *reg_base);
+
+int vxd_pvdec_send_msg(const void *dev, void __iomem *reg_base,
+		       unsigned int *msg, unsigned long msg_size, unsigned short msg_id,
+		       struct vxd_dev *ctx);
+
+int vxd_pvdec_pend_msg_info(const void *dev, void __iomem *reg_base,
+			    unsigned long *size, unsigned short *msg_id,
+			    unsigned char *not_last_msg);
+
+int vxd_pvdec_recv_msg(const void *dev, void __iomem *reg_base,
+		       unsigned int *buf, unsigned long buf_size, struct vxd_dev *ctx);
+
+int vxd_pvdec_check_fw_status(const void *dev, void __iomem *reg_base);
+
+unsigned long vxd_pvdec_peek_mtx_fifo(const void *dev,
+				      void __iomem *reg_base);
+
+unsigned long vxd_pvdec_read_mtx_fifo(const void *dev, void __iomem *reg_base,
+				      unsigned int *buf, unsigned long size);
+
+irqreturn_t vxd_pvdec_clear_int(void __iomem *reg_base, unsigned int *irq_status);
+
+int vxd_pvdec_check_irq(const void *dev, void __iomem *reg_base,
+			unsigned int irq_status);
+
+int vxd_pvdec_msg_fit(const void *dev, void __iomem *reg_base,
+		      unsigned long msg_size);
+
+void vxd_pvdec_get_state(const void *dev, void __iomem *reg_base,
+			 unsigned int num_pipes, struct vxd_hw_state *state);
+
+int vxd_pvdec_get_props(const void *dev, void __iomem *reg_base,
+			struct vxd_core_props *props);
+
+unsigned long vxd_pvdec_get_dbg_fifo_size(void __iomem *reg_base);
+
+int vxd_pvdec_dump_mtx_ram(const void *dev, void __iomem *reg_base,
+			   unsigned int addr, unsigned int count, unsigned int *buf);
+
+int vxd_pvdec_dump_mtx_status(const void *dev, void __iomem *reg_base,
+			      unsigned int *array, unsigned int array_size);
+
+#endif /* _VXD_PVDEC_PRIV_H */
diff --git a/drivers/staging/media/vxd/decoder/vxd_pvdec_regs.h b/drivers/staging/media/vxd/decoder/vxd_pvdec_regs.h
new file mode 100644
index 000000000000..2d8cf9ef8df7
--- /dev/null
+++ b/drivers/staging/media/vxd/decoder/vxd_pvdec_regs.h
@@ -0,0 +1,779 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * VXD PVDEC registers header file
+ *
+ * Copyright (c) Imagination Technologies Ltd.
+ * Copyright (c) 2021 Texas Instruments Incorporated - http://www.ti.com/
+ *
+ * Authors:
+ *	Angela Stegmaier <angelabaker@ti.com>
+ *
+ * Re-written for upstreamimg
+ *	Sidraya Jayagond <sidraya.bj@pathpartnertech.com>
+ *	Prashanth Kumar Amai <prashanth.ka@pathpartnertech.com>
+ */
+
+#ifndef VXD_PVDEC_REGS_H
+#define VXD_PVDEC_REGS_H
+
+/* ************************* VXD-specific values *************************** */
+/* 0x10 for code, 0x18 for data. */
+#define PVDEC_MTX_CORE_MEM 0x18
+/* Iteration time out counter for MTX I/0. */
+#define PVDEC_TIMEOUT_COUNTER 1000
+/* Partial frame notification timer divider. */
+#define PVDEC_PFNT_DIV 0
+/* Value returned by register reads when HW enters invalid state (FPGA) */
+#define PVDEC_INVALID_HW_STATE 0x000dead1
+
+/* Default core clock for pvdec */
+#define PVDEC_CLK_MHZ_DEFAULT 200
+
+/* Offsets of registers groups within VXD. */
+#define PVDEC_PROC_OFFSET 0x0000
+/* 0x34c: Skip DMA registers when running against CSIM (vritual platform) */
+#define PVDEC_PROC_SIZE 0x34C  /* 0x3FF */
+
+#define PVDEC_CORE_OFFSET 0x0400
+#define PVDEC_CORE_SIZE 0x3FF
+
+#define MTX_CORE_OFFSET PVDEC_PROC_OFFSET
+#define MTX_CORE_SIZE PVDEC_PROC_SIZE
+
+#define VIDEO_BUS4_MMU_OFFSET 0x1000
+#define VIDEO_BUS4_MMU_SIZE 0x1FF
+
+#define IMG_VIDEO_BUS4_MMU_OFFSET VIDEO_BUS4_MMU_OFFSET
+#define IMG_VIDEO_BUS4_MMU_SIZE VIDEO_BUS4_MMU_SIZE
+
+#define VLR_OFFSET 0x2000
+#define VLR_SIZE 0x1000
+
+/* PVDEC_ENTROPY defined in uapi/vxd_pvdec.h */
+
+#define PVDEC_PIXEL_OFFSET 0x4000
+#define PVDEC_PIXEL_SIZE 0x1FF
+
+/* PVDEC_VEC_BE defined in uapi/vxd_pvdec.h */
+
+/* MSVDX_VEC defined in uapi/vxd_pvdec.h */
+
+#define MSVDX_VDMC_OFFSET 0x6800
+#define MSVDX_VDMC_SIZE 0x7F
+
+#define DMAC_OFFSET 0x6A00
+#define DMAC_SIZE 0x1FF
+
+#define PVDEC_TEST_OFFSET 0xFF00
+#define PVDEC_TEST_SIZE 0xFF
+
+/* *********************** firmware specific values ************************* */
+
+/* layout of COMMS RAM */
+
+#define PVDEC_FW_COMMS_HDR_SIZE 0x38
+
+#define PVDEC_FW_STATUS_OFFSET 0x00
+#define PVDEC_FW_TASK_STATUS_OFFSET 0x04
+#define PVDEC_FW_ID_OFFSET 0x08
+#define PVDEC_FW_MTXPC_OFFSET 0x0c
+#define PVDEC_FW_MSG_COUNTER_OFFSET 0x10
+#define PVDEC_FW_SIGNATURE_OFFSET 0x14
+#define PVDEC_FW_TO_HOST_BUF_CONF_OFFSET 0x18
+#define PVDEC_FW_TO_HOST_RD_IDX_OFFSET 0x1c
+#define PVDEC_FW_TO_HOST_WR_IDX_OFFSET 0x20
+#define PVDEC_FW_TO_MTX_BUF_CONF_OFFSET 0x24
+#define PVDEC_FW_TO_MTX_RD_IDX_OFFSET 0x28
+#define PVDEC_FW_FLAGS_OFFSET 0x2c
+#define PVDEC_FW_TO_MTX_WR_IDX_OFFSET 0x30
+#define PVDEC_FW_STATE_BUF_CFG_OFFSET 0x34
+
+/* firmware status */
+
+#define PVDEC_FW_STATUS_PANIC  0x2
+#define PVDEC_FW_STATUS_ASSERT 0x3
+#define PVDEC_FW_STATUS_SO     0x8
+
+/* firmware flags */
+
+#define PVDEC_FWFLAG_BIG_TO_HOST_BUFFER 0x00000002
+#define PVDEC_FWFLAG_FORCE_FS_FLOW 0x00000004
+#define PVDEC_FWFLAG_DISABLE_WATCHDOGS 0x00000008
+#define PVDEC_FWFLAG_DISABLE_AUTONOMOUS_RESET 0x00000040
+#define PVDEC_FWFLAG_DISABLE_IDLE_GPIO 0x00002000
+#define PVDEC_FWFLAG_ENABLE_ERROR_CONCEALMENT 0x00100000
+#define PVDEC_FWFLAG_DISABLE_GENC_FLUSHING 0x00800000
+#define PVDEC_FWFLAG_FAKE_COMPLETION 0x20000000
+#define PVDEC_FWFLAG_DISABLE_COREWDT_TIMERS 0x01000000
+
+/* firmware message header */
+
+#define PVDEC_FW_DEVA_GENMSG_OFFSET 0
+
+#define PVDEC_FW_DEVA_GENMSG_MSG_ID_MASK 0xFFFF0000
+#define PVDEC_FW_DEVA_GENMSG_MSG_ID_SHIFT 16
+
+#define PVDEC_FW_DEVA_GENMSG_MSG_TYPE_MASK 0xFF00
+#define PVDEC_FW_DEVA_GENMSG_MSG_TYPE_SHIFT 8
+
+#define PVDEC_FW_DEVA_GENMSG_NOT_LAST_MSG_MASK 0x80
+#define PVDEC_FW_DEVA_GENMSG_NOT_LAST_MSG_SHIFT 7
+
+#define PVDEC_FW_DEVA_GENMSG_MSG_SIZE_MASK 0x7F
+#define PVDEC_FW_DEVA_GENMSG_MSG_SIZE_SHIFT 0
+
+/* firmware init message */
+
+#define PVDEC_FW_DEVA_INIT_MSG_WRDS 9
+
+#define PVDEC_FW_DEVA_INIT_RENDEC_ADDR0_OFFSET 0xC
+
+#define PVDEC_FW_DEVA_INIT_RENDEC_SIZE0_OFFSET 0x10
+#define PVDEC_FW_DEVA_INIT_RENDEC_SIZE0_MASK 0xFFFF
+#define PVDEC_FW_DEVA_INIT_RENDEC_SIZE0_SHIFT 0
+
+#define PVDEC_FW_DEVA_INIT_HEVC_CFG_OFFSET 0x14
+#define PVDEC_FW_DEVA_INIT_HEVC_CFG_MAX_H_FOR_PIPE_WAIT_MASK 0xFFFF0000
+#define PVDEC_FW_DEVA_INIT_HEVC_CFG_MAX_H_FOR_PIPE_WAIT_SHIFT 16
+#define PVDEC_FW_DEVA_INIT_HEVC_CFG_MIN_H_FOR_DUAL_PIPE_MASK 0xFFFF
+#define PVDEC_FW_DEVA_INIT_HEVC_CFG_MIN_H_FOR_DUAL_PIPE_SHIFT 0
+
+#define PVDEC_FW_DEVA_INIT_SIG_SELECT_OFFSET 0x18
+
+#define PVDEC_FW_DEVA_INIT_DBG_DELAYS_OFFSET 0x1C
+
+#define PVDEC_FW_DEVA_INIT_PFNT_DIV_OFFSET 0x20
+#define PVDEC_FW_DEVA_INIT_PFNT_DIV_MASK 0xFFFF0000
+#define PVDEC_FW_DEVA_INIT_PFNT_DIV_SHIFT 16
+
+#define PVDEC_FW_DEVA_INIT_FWWDT_MS_OFFSET 0x20
+#define PVDEC_FW_DEVA_INIT_FWWDT_MS_MASK 0xFFFF
+#define PVDEC_FW_DEVA_INIT_FWWDT_MS_SHIFT 0
+
+/* firmware message types */
+#define PVDEC_FW_MSG_TYPE_PADDING 0
+#define PVDEC_FW_MSG_TYPE_INIT 0x80
+
+/* miscellaneous */
+
+#define PVDEC_FW_READY_SIG 0xa5a5a5a5
+
+#define PVDEC_FW_COM_BUF_SIZE(cfg) ((cfg) & 0x0000ffff)
+#define PVDEC_FW_COM_BUF_OFF(cfg) (((cfg) & 0xffff0000) >> 16)
+
+/*
+ * Timer divider calculation macro.
+ * NOTE: The Timer divider is only 8bit field
+ * so we set it for 2MHz timer base to cover wider
+ * range of core frequencies on real platforms (freq > 255MHz)
+ */
+#define PVDEC_CALC_TIMER_DIV(val) (((val) - 1) / 2)
+
+#define MTX_CORE_STATUS_ELEMENTS 4
+
+#define PVDEC_CORE_MEMSTALLER_ELEMENTS 7
+
+/* ********************** PVDEC_CORE registers group ************************ */
+
+/* register PVDEC_SOFT_RESET */
+#define PVDEC_CORE_PVDEC_SOFT_RST_OFFSET 0x0000
+
+#define PVDEC_CORE_PVDEC_SOFT_RST_PVDEC_PIXEL_PROC_SOFT_RST_MASK 0xFF000000
+#define PVDEC_CORE_PVDEC_SOFT_RST_PVDEC_PIXEL_PROC_SOFT_RST_SHIFT 24
+
+#define PVDEC_CORE_PVDEC_SOFT_RST_PVDEC_ENTROPY_SOFT_RST_MASK 0x00FF0000
+#define PVDEC_CORE_PVDEC_SOFT_RST_PVDEC_ENTROPY_SOFT_RST_SHIFT 16
+
+#define PVDEC_CORE_PVDEC_SOFT_RST_PVDEC_MMU_SOFT_RST_MASK 0x00000002
+#define PVDEC_CORE_PVDEC_SOFT_RST_PVDEC_MMU_SOFT_RST_SHIFT 1
+
+#define PVDEC_CORE_PVDEC_SOFT_RST_PVDEC_SOFT_RST_MASK 0x00000001
+#define PVDEC_CORE_PVDEC_SOFT_RST_PVDEC_SOFT_RST_SHIFT 0
+
+/* register PVDEC_HOST_INTERRUPT_STATUS */
+#define PVDEC_CORE_PVDEC_INT_STAT_OFFSET 0x0010
+
+#define PVDEC_CORE_PVDEC_INT_STAT_HOST_SYS_WDT_MASK 0x10000000
+#define PVDEC_CORE_PVDEC_INT_STAT_HOST_SYS_WDT_SHIFT 28
+
+#define PVDEC_CORE_PVDEC_INT_STAT_HOST_READ_TIMEOUT_PROC_IRQ_MASK 0x08000000
+#define PVDEC_CORE_PVDEC_INT_STAT_HOST_READ_TIMEOUT_PROC_IRQ_SHIFT 27
+
+#define PVDEC_CORE_PVDEC_INT_STAT_HOST_COMMAND_TIMEOUT_PROC_IRQ_MASK 0x04000000
+#define PVDEC_CORE_PVDEC_INT_STAT_HOST_COMMAND_TIMEOUT_PROC_IRQ_SHIFT 26
+
+#define PVDEC_CORE_PVDEC_INT_STAT_HOST_READ_TIMEOUT_HOST_IRQ_MASK 0x02000000
+#define PVDEC_CORE_PVDEC_INT_STAT_HOST_READ_TIMEOUT_HOST_IRQ_SHIFT 25
+
+#define PVDEC_CORE_PVDEC_INT_STAT_HOST_COMMAND_TIMEOUT_HOST_IRQ_MASK 0x01000000
+#define PVDEC_CORE_PVDEC_INT_STAT_HOST_COMMAND_TIMEOUT_HOST_IRQ_SHIFT 24
+
+#define PVDEC_CORE_PVDEC_INT_STAT_HOST_PROC_GPIO_IRQ_MASK 0x00200000
+#define PVDEC_CORE_PVDEC_INT_STAT_HOST_PROC_GPIO_IRQ_SHIFT 21
+
+#define PVDEC_CORE_PVDEC_INT_STAT_HOST_PROC_IRQ_MASK 0x00100000
+#define PVDEC_CORE_PVDEC_INT_STAT_HOST_PROC_IRQ_SHIFT 20
+
+#define PVDEC_CORE_PVDEC_INT_STAT_HOST_MMU_FAULT_IRQ_MASK 0x00010000
+#define PVDEC_CORE_PVDEC_INT_STAT_HOST_MMU_FAULT_IRQ_SHIFT 16
+
+#define PVDEC_CORE_PVDEC_INT_STAT_HOST_PIXEL_PROCESSING_IRQ_MASK 0x0000FF00
+#define PVDEC_CORE_PVDEC_INT_STAT_HOST_PIXEL_PROCESSING_IRQ_SHIFT 8
+
+#define PVDEC_CORE_PVDEC_INT_STAT_HOST_ENTROPY_PIPE_IRQ_MASK 0x000000FF
+#define PVDEC_CORE_PVDEC_INT_STAT_HOST_ENTROPY_PIPE_IRQ_SHIFT 0
+
+/* register PVDEC_INTERRUPT_CLEAR */
+#define PVDEC_CORE_PVDEC_INT_CLEAR_OFFSET 0x0014
+
+#define PVDEC_CORE_PVDEC_INT_CLEAR_IRQ_CLEAR_MASK 0xFFFF0000
+#define PVDEC_CORE_PVDEC_INT_CLEAR_IRQ_CLEAR_SHIFT 16
+
+/* register PVDEC_HOST_INTERRUPT_ENABLE */
+#define PVDEC_CORE_PVDEC_HOST_INT_ENA_OFFSET 0x0018
+
+#define PVDEC_CORE_PVDEC_HOST_INT_ENA_HOST_IRQ_ENABLE_MASK 0xFFFF0000
+#define PVDEC_CORE_PVDEC_HOST_INT_ENA_HOST_IRQ_ENABLE_SHIFT 16
+
+/* Register PVDEC_MAN_CLK_ENABLE */
+#define PVDEC_CORE_PVDEC_MAN_CLK_ENA_OFFSET 0x0040
+
+#define PVDEC_CORE_PVDEC_MAN_CLK_ENA_PIXEL_PROC_MAN_CLK_ENA_MASK 0xFF000000
+#define PVDEC_CORE_PVDEC_MAN_CLK_ENA_PIXEL_PROC_MAN_CLK_ENA_SHIFT 24
+
+#define PVDEC_CORE_PVDEC_MAN_CLK_ENA_ENTROPY_PIPE_MAN_CLK_ENA_MASK 0x00FF0000
+#define PVDEC_CORE_PVDEC_MAN_CLK_ENA_ENTROPY_PIPE_MAN_CLK_ENA_SHIFT 16
+
+#define PVDEC_CORE_PVDEC_MAN_CLK_ENA_MEM_MAN_CLK_ENA_MASK 0x00000100
+#define PVDEC_CORE_PVDEC_MAN_CLK_ENA_MEM_MAN_CLK_ENA_SHIFT 8
+
+#define PVDEC_CORE_PVDEC_MAN_CLK_ENA_PVDEC_REG_MAN_CLK_ENA_MASK 0x00000010
+#define PVDEC_CORE_PVDEC_MAN_CLK_ENA_PVDEC_REG_MAN_CLK_ENA_SHIFT 4
+
+#define PVDEC_CORE_PVDEC_MAN_CLK_ENA_PROC_MAN_CLK_ENA_MASK 0x00000002
+#define PVDEC_CORE_PVDEC_MAN_CLK_ENA_PROC_MAN_CLK_ENA_SHIFT 1
+
+#define PVDEC_CORE_PVDEC_MAN_CLK_ENA_CORE_MAN_CLK_ENA_MASK 0x00000001
+#define PVDEC_CORE_PVDEC_MAN_CLK_ENA_CORE_MAN_CLK_ENA_SHIFT 0
+
+/* register PVDEC_HOST_PIPE_SELECT */
+#define PVDEC_CORE_PVDEC_HOST_PIPE_SELECT_OFFSET 0x0060
+
+#define PVDEC_CORE_PVDEC_HOST_PIPE_SELECT_PIPE_SEL_MASK 0x0000000F
+#define PVDEC_CORE_PVDEC_HOST_PIPE_SELECT_PIPE_SEL_SHIFT 0
+
+/* register PROC_DEBUG */
+#define PVDEC_CORE_PROC_DEBUG_OFFSET 0x0100
+
+#define PVDEC_CORE_PROC_DEBUG_MTX_LAST_RAM_BANK_SIZE_MASK 0xFF000000
+#define PVDEC_CORE_PROC_DEBUG_MTX_LAST_RAM_BANK_SIZE_SHIFT 24
+
+#define PVDEC_CORE_PROC_DEBUG_MTX_RAM_BANK_SIZE_MASK 0x000F0000
+#define PVDEC_CORE_PROC_DEBUG_MTX_RAM_BANK_SIZE_SHIFT 16
+
+#define PVDEC_CORE_PROC_DEBUG_MTX_RAM_BANKS_MASK 0x00000F00
+#define PVDEC_CORE_PROC_DEBUG_MTX_RAM_BANKS_SHIFT 8
+
+#define PVDEC_CORE_PROC_DEBUG_MTX_RAM_NEW_REPRESENTATION_MASK 0x00000080
+#define PVDEC_CORE_PROC_DEBUG_MTX_RAM_NEW_REPRESENTATION_SHIFT 7
+
+#define PVDEC_CORE_PROC_DEBUG_PROC_DBG_GPIO_OUT_MASK 0x00000018
+#define PVDEC_CORE_PROC_DEBUG_PROC_DBG_GPIO_OUT_SHIFT 3
+
+#define PVDEC_CORE_PROC_DEBUG_PROC_DBG_IS_SLAVE_MASK 0x00000004
+#define PVDEC_CORE_PROC_DEBUG_PROC_DBG_IS_SLAVE_SHIFT 2
+
+#define PVDEC_CORE_PROC_DEBUG_PROC_DBG_GPIO_IN_MASK 0x00000003
+#define PVDEC_CORE_PROC_DEBUG_PROC_DBG_GPIO_IN_SHIFT 0
+
+/* register PROC_DMAC_CONTROL */
+#define PVDEC_CORE_PROC_DMAC_CONTROL_OFFSET 0x0104
+
+#define PVDEC_CORE_PROC_DMAC_CONTROL_BOOT_ON_DMA_CH0_MASK 0x80000000
+#define PVDEC_CORE_PROC_DMAC_CONTROL_BOOT_ON_DMA_CH0_SHIFT 31
+
+/* register PROC_DEBUG_FIFO */
+#define PVDEC_CORE_PROC_DBG_FIFO_OFFSET 0x0108
+
+#define PVDEC_CORE_PROC_DBG_FIFO_PROC_DBG_FIFO_MASK 0xFFFFFFFF
+#define PVDEC_CORE_PROC_DBG_FIFO_PROC_DBG_FIFO_SHIFT 0
+
+/* register PROC_DEBUG_FIFO_CTRL_0 */
+#define PVDEC_CORE_PROC_DBG_FIFO_CTRL0_OFFSET 0x010C
+
+#define PVDEC_CORE_PROC_DBG_FIFO_CTRL0_PROC_DBG_FIFO_COUNT_MASK 0xFFFF0000
+#define PVDEC_CORE_PROC_DBG_FIFO_CTRL0_PROC_DBG_FIFO_COUNT_SHIFT 16
+
+#define PVDEC_CORE_PROC_DBG_FIFO_CTRL0_PROC_DBG_FIFO_SIZE_MASK 0x0000FFFF
+#define PVDEC_CORE_PROC_DBG_FIFO_CTRL0_PROC_DBG_FIFO_SIZE_SHIFT 0
+
+/* register PVDEC_CORE_ID */
+#define PVDEC_CORE_PVDEC_CORE_ID_OFFSET 0x0230
+
+#define PVDEC_CORE_PVDEC_CORE_ID_GROUP_ID_MASK 0xFF000000
+#define PVDEC_CORE_PVDEC_CORE_ID_GROUP_ID_SHIFT 24
+
+#define PVDEC_CORE_PVDEC_CORE_ID_CORE_ID_MASK 0x00FF0000
+#define PVDEC_CORE_PVDEC_CORE_ID_CORE_ID_SHIFT 16
+
+#define PVDEC_CORE_PVDEC_CORE_ID_PVDEC_CORE_CONFIG_MASK 0x0000FFFF
+#define PVDEC_CORE_PVDEC_CORE_ID_PVDEC_CORE_CONFIG_SHIFT 0
+
+#define PVDEC_CORE_PVDEC_CORE_ID_ENT_PIPES_MASK 0x0000000F
+#define PVDEC_CORE_PVDEC_CORE_ID_ENT_PIPES_SHIFT 0
+
+#define PVDEC_CORE_PVDEC_CORE_ID_PIX_PIPES_MASK 0x000000F0
+#define PVDEC_CORE_PVDEC_CORE_ID_PIX_PIPES_SHIFT 4
+
+/* register PVDEC_CORE_REV */
+#define PVDEC_CORE_PVDEC_CORE_REV_OFFSET 0x0240
+
+#define PVDEC_CORE_PVDEC_CORE_REV_PVDEC_DESIGNER_MASK 0xFF000000
+#define PVDEC_CORE_PVDEC_CORE_REV_PVDEC_DESIGNER_SHIFT 24
+
+#define PVDEC_CORE_PVDEC_CORE_REV_PVDEC_MAJOR_REV_MASK 0x00FF0000
+#define PVDEC_CORE_PVDEC_CORE_REV_PVDEC_MAJOR_REV_SHIFT 16
+
+#define PVDEC_CORE_PVDEC_CORE_REV_PVDEC_MINOR_REV_MASK 0x0000FF00
+#define PVDEC_CORE_PVDEC_CORE_REV_PVDEC_MINOR_REV_SHIFT 8
+
+#define PVDEC_CORE_PVDEC_CORE_REV_PVDEC_MAINT_REV_MASK 0x000000FF
+#define PVDEC_CORE_PVDEC_CORE_REV_PVDEC_MAINT_REV_SHIFT 0
+
+/* *********************** MTX_CORE registers group ************************* */
+
+/* register MTX_ENABLE  */
+#define MTX_CORE_MTX_ENABLE_OFFSET 0x0000
+
+/* register MTX_SYSC_TXTIMER. Note: it's not defined in PVDEC TRM. */
+#define MTX_CORE_MTX_SYSC_TXTIMER_OFFSET 0x0010
+
+/* register MTX_KICKI */
+#define MTX_CORE_MTX_KICKI_OFFSET 0x0088
+
+#define MTX_CORE_MTX_KICKI_MTX_KICKI_MASK 0x0000FFFF
+#define MTX_CORE_MTX_KICKI_MTX_KICKI_SHIFT 0
+
+/* register MTX_FAULT0 */
+#define MTX_CORE_MTX_FAULT0_OFFSET 0x0090
+
+/* register MTX_REGISTER_READ_WRITE_DATA */
+#define MTX_CORE_MTX_REG_READ_WRITE_DATA_OFFSET 0x00F8
+
+/* register MTX_REGISTER_READ_WRITE_REQUEST */
+#define MTX_CORE_MTX_REG_READ_WRITE_REQUEST_OFFSET 0x00FC
+
+#define MTX_CORE_MTX_REG_READ_WRITE_REQUEST_MTX_DREADY_MASK 0x80000000
+#define MTX_CORE_MTX_REG_READ_WRITE_REQUEST_MTX_DREADY_SHIFT 31
+
+#define MTX_CORE_MTX_REG_READ_WRITE_REQUEST_MTX_RNW_MASK 0x00010000
+#define MTX_CORE_MTX_REG_READ_WRITE_REQUEST_MTX_RNW_SHIFT 16
+
+#define MTX_CORE_MTX_REG_READ_WRITE_REQUEST_MTX_RSPECIFIER_MASK 0x00000070
+#define MTX_CORE_MTX_REG_READ_WRITE_REQUEST_MTX_RSPECIFIER_SHIFT 4
+
+#define MTX_CORE_MTX_REG_READ_WRITE_REQUEST_MTX_USPECIFIER_MASK 0x0000000F
+#define MTX_CORE_MTX_REG_READ_WRITE_REQUEST_MTX_USPECIFIER_SHIFT 0
+
+/* register MTX_RAM_ACCESS_DATA_EXCHANGE */
+#define MTX_CORE_MTX_RAM_ACCESS_DATA_EXCHANGE_OFFSET 0x0100
+
+/* register MTX_RAM_ACCESS_DATA_TRANSFER */
+#define MTX_CORE_MTX_RAM_ACCESS_DATA_TRANSFER_OFFSET 0x0104
+
+/* register MTX_RAM_ACCESS_CONTROL */
+#define MTX_CORE_MTX_RAM_ACCESS_CONTROL_OFFSET 0x0108
+
+#define MTX_CORE_MTX_RAM_ACCESS_CONTROL_MTX_MCMID_MASK 0x0FF00000
+#define MTX_CORE_MTX_RAM_ACCESS_CONTROL_MTX_MCMID_SHIFT 20
+
+#define MTX_CORE_MTX_RAM_ACCESS_CONTROL_MTX_MCM_ADDR_MASK 0x000FFFFC
+#define MTX_CORE_MTX_RAM_ACCESS_CONTROL_MTX_MCM_ADDR_SHIFT 2
+
+#define MTX_CORE_MTX_RAM_ACCESS_CONTROL_MTX_MCMAI_MASK 0x00000002
+#define MTX_CORE_MTX_RAM_ACCESS_CONTROL_MTX_MCMAI_SHIFT 1
+
+#define MTX_CORE_MTX_RAM_ACCESS_CONTROL_MTX_MCMR_MASK 0x00000001
+#define MTX_CORE_MTX_RAM_ACCESS_CONTROL_MTX_MCMR_SHIFT 0
+
+/* register MTX_RAM_ACCESS_STATUS */
+#define MTX_CORE_MTX_RAM_ACCESS_STATUS_OFFSET 0x010C
+
+#define MTX_CORE_MTX_RAM_ACCESS_STATUS_MTX_MTX_MCM_STAT_MASK 0x00000001
+#define MTX_CORE_MTX_RAM_ACCESS_STATUS_MTX_MTX_MCM_STAT_SHIFT 0
+
+/* register MTX_SOFT_RESET */
+#define MTX_CORE_MTX_SOFT_RESET_OFFSET 0x0200
+
+#define MTX_CORE_MTX_SOFT_RESET_MTX_RESET_MASK 0x00000001
+#define MTX_CORE_MTX_SOFT_RESET_MTX_RESET_SHIFT 0
+
+/* register MTX_SYSC_TIMERDIV */
+#define MTX_CORE_MTX_SYSC_TIMERDIV_OFFSET 0x0208
+
+#define MTX_CORE_MTX_SYSC_TIMERDIV_TIMER_EN_MASK 0x00010000
+#define MTX_CORE_MTX_SYSC_TIMERDIV_TIMER_EN_SHIFT 16
+
+#define MTX_CORE_MTX_SYSC_TIMERDIV_TIMER_DIV_MASK 0x000000FF
+#define MTX_CORE_MTX_SYSC_TIMERDIV_TIMER_DIV_SHIFT 0
+
+/* register MTX_SYSC_CDMAA */
+#define MTX_CORE_MTX_SYSC_CDMAA_OFFSET 0x0344
+
+#define MTX_CORE_MTX_SYSC_CDMAA_CDMAA_ADDRESS_MASK 0x03FFFFFC
+#define MTX_CORE_MTX_SYSC_CDMAA_CDMAA_ADDRESS_SHIFT 2
+
+/* register MTX_SYSC_CDMAC */
+#define MTX_CORE_MTX_SYSC_CDMAC_OFFSET 0x0340
+
+#define MTX_CORE_MTX_SYSC_CDMAC_BURSTSIZE_MASK 0x07000000
+#define MTX_CORE_MTX_SYSC_CDMAC_BURSTSIZE_SHIFT 24
+
+#define MTX_CORE_MTX_SYSC_CDMAC_RNW_MASK 0x00020000
+#define MTX_CORE_MTX_SYSC_CDMAC_RNW_SHIFT 17
+
+#define MTX_CORE_MTX_SYSC_CDMAC_ENABLE_MASK 0x00010000
+#define MTX_CORE_MTX_SYSC_CDMAC_ENABLE_SHIFT 16
+
+#define MTX_CORE_MTX_SYSC_CDMAC_LENGTH_MASK 0x0000FFFF
+#define MTX_CORE_MTX_SYSC_CDMAC_LENGTH_SHIFT 0
+
+/* register MTX_SYSC_CDMAT */
+#define MTX_CORE_MTX_SYSC_CDMAT_OFFSET 0x0350
+
+/* ****************** IMG_VIDEO_BUS4_MMU registers group ******************** */
+
+/* register MMU_CONTROL0_ */
+#define IMG_VIDEO_BUS4_MMU_MMU_CONTROL0_USE_TILE_STRIDE_PER_CTX_MASK 0x00010000
+#define IMG_VIDEO_BUS4_MMU_MMU_CONTROL0_USE_TILE_STRIDE_PER_CTX_SHIFT 16
+
+#define IMG_VIDEO_BUS4_MMU_MMU_ADDRESS_CONTROL_MMU_ENA_EXT_ADDR_MASK 0x00000010
+#define IMG_VIDEO_BUS4_MMU_MMU_ADDRESS_CONTROL_MMU_ENA_EXT_ADDR_SHIFT 4
+
+#define IMG_VIDEO_BUS4_MMU_MMU_ADDRESS_CONTROL_UPPER_ADDR_FIXED_MASK 0x00FF0000
+#define IMG_VIDEO_BUS4_MMU_MMU_ADDRESS_CONTROL_UPPER_ADDR_FIXED_SHIFT 16
+
+#define IMG_VIDEO_BUS4_MMU_MMU_MEM_EXT_OUTSTANDING_READ_WORDS_MASK 0x0000FFFF
+#define IMG_VIDEO_BUS4_MMU_MMU_MEM_EXT_OUTSTANDING_READ_WORDS_SHIFT 0
+
+/* *************************** MMU-related values ************************** */
+
+/* MMU page size */
+
+enum {
+	VXD_MMU_SOFT_PAGE_SIZE_PAGE_64K    = 0x4,
+	VXD_MMU_SOFT_PAGE_SIZE_PAGE_16K    = 0x2,
+	VXD_MMU_SOFT_PAGE_SIZE_PAGE_4K     = 0x0,
+	VXD_MMU_SOFT_PAGE_SIZE_FORCE32BITS = 0x7FFFFFFFU
+};
+
+/* MMU PTD entry flags */
+enum {
+	VXD_MMU_PTD_FLAG_NONE            = 0x0,
+	VXD_MMU_PTD_FLAG_VALID           = 0x1,
+	VXD_MMU_PTD_FLAG_WRITE_ONLY      = 0x2,
+	VXD_MMU_PTD_FLAG_READ_ONLY       = 0x4,
+	VXD_MMU_PTD_FLAG_CACHE_COHERENCY = 0x8,
+	VXD_MMU_PTD_FLAG_FORCE32BITS     = 0x7FFFFFFFU
+};
+
+/* ********************* PVDEC_PIXEL registers group *********************** */
+
+/* register PVDEC_PIXEL_PIXEL_CONTROL_0 */
+#define PVDEC_PIXEL_PIXEL_CONTROL_0_OFFSET 0x0004
+
+#define PVDEC_PIXEL_PIXEL_CONTROL_0_DMAC_CH_SEL_FOR_MTX_MASK 0x0000000E
+#define PVDEC_PIXEL_PIXEL_CONTROL_0_DMAC_CH_SEL_FOR_MTX_SHIFT 1
+
+#define PVDEC_PIXEL_PIXEL_CONTROL_0_PROC_DMAC_CH0_SEL_MASK 0x00000001
+#define PVDEC_PIXEL_PIXEL_CONTROL_0_PROC_DMAC_CH0_SEL_SHIFT 0
+
+/* register PVDEC_PIXEL_MAN_CLK_ENABLE */
+#define PVDEC_PIXEL_PIXEL_MAN_CLK_ENA_OFFSET 0x0020
+
+#define PVDEC_PIXEL_PIXEL_MAN_CLK_ENA_PIXEL_REG_MAN_CLK_ENA_MASK 0x00020000
+#define PVDEC_PIXEL_PIXEL_MAN_CLK_ENA_PIXEL_REG_MAN_CLK_ENA_SHIFT 17
+
+#define PVDEC_PIXEL_PIXEL_MAN_CLK_ENA_PIXEL_DMAC_MAN_CLK_ENA_MASK 0x00010000
+#define PVDEC_PIXEL_PIXEL_MAN_CLK_ENA_PIXEL_DMAC_MAN_CLK_ENA_SHIFT 16
+
+/* register PIXEL_PIPE_CONFIG */
+#define PVDEC_PIXEL_PIXEL_PIPE_CONFIG_OFFSET 0x00C0
+
+/* register PIXEL_MISC_CONFIG */
+#define PVDEC_PIXEL_PIXEL_MISC_CONFIG_OFFSET 0x00C4
+
+/* register MAX_FRAME_CONFIG */
+#define PVDEC_PIXEL_MAX_FRAME_CONFIG_OFFSET 0x00C8
+
+/* ********************* PVDEC_ENTROPY registers group ********************* */
+
+/* Register PVDEC_ENTROPY_MAN_CLK_ENABLE */
+#define PVDEC_ENTROPY_ENTROPY_MAN_CLK_ENA_OFFSET 0x0020
+
+/* Register PVDEC_ENTROPY_LAST_LAST_MB */
+#define PVDEC_ENTROPY_ENTROPY_LAST_MB_OFFSET 0x00BC
+
+/* ********************* PVDEC_VEC_BE registers group ********************** */
+
+/* Register PVDEC_VEC_BE_VEC_BE_STATUS */
+#define PVDEC_VEC_BE_VEC_BE_STATUS_OFFSET 0x0018
+
+/* ********************* MSVDX_VEC registers group ************************* */
+
+/* Register MSVDX_VEC_VEC_ENTDEC_INFORMATION */
+#define MSVDX_VEC_VEC_ENTDEC_INFORMATION_OFFSET 0x00AC
+
+/* ********************* MSVDX_VDMC registers group ************************ */
+
+/* Register MSVDX_VDMC_VDMC_MACROBLOCK_NUMBER */
+#define MSVDX_VDMC_VDMC_MACROBLOCK_NUMBER_OFFSET 0x0048
+
+/* ************************** DMAC registers group ************************* */
+
+/* register DMAC_SETUP */
+#define DMAC_DMAC_SETUP_OFFSET 0x0000
+#define DMAC_DMAC_SETUP_STRIDE 32
+#define DMAC_DMAC_SETUP_NO_ENTRIES 6
+
+/* register DMAC_COUNT */
+#define DMAC_DMAC_COUNT_OFFSET 0x0004
+#define DMAC_DMAC_COUNT_STRIDE 32
+#define DMAC_DMAC_COUNT_NO_ENTRIES 6
+
+#define DMAC_DMAC_COUNT_LIST_IEN_MASK 0x80000000
+#define DMAC_DMAC_COUNT_LIST_IEN_SHIFT 31
+
+#define DMAC_DMAC_COUNT_BSWAP_MASK 0x40000000
+#define DMAC_DMAC_COUNT_BSWAP_SHIFT 30
+
+#define DMAC_DMAC_COUNT_TRANSFER_IEN_MASK 0x20000000
+#define DMAC_DMAC_COUNT_TRANSFER_IEN_SHIFT 29
+
+#define DMAC_DMAC_COUNT_PW_MASK 0x18000000
+#define DMAC_DMAC_COUNT_PW_SHIFT 27
+
+#define DMAC_DMAC_COUNT_DIR_MASK 0x04000000
+#define DMAC_DMAC_COUNT_DIR_SHIFT 26
+
+#define DMAC_DMAC_COUNT_PI_MASK 0x03000000
+#define DMAC_DMAC_COUNT_PI_SHIFT 24
+
+#define DMAC_DMAC_COUNT_LIST_FIN_CTL_MASK 0x00400000
+#define DMAC_DMAC_COUNT_LIST_FIN_CTL_SHIFT 22
+
+#define DMAC_DMAC_COUNT_DREQ_MASK 0x00100000
+#define DMAC_DMAC_COUNT_DREQ_SHIFT 20
+
+#define DMAC_DMAC_COUNT_SRST_MASK 0x00080000
+#define DMAC_DMAC_COUNT_SRST_SHIFT 19
+
+#define DMAC_DMAC_COUNT_LIST_EN_MASK 0x00040000
+#define DMAC_DMAC_COUNT_LIST_EN_SHIFT 18
+
+#define DMAC_DMAC_COUNT_ENABLE_2D_MODE_MASK 0x00020000
+#define DMAC_DMAC_COUNT_ENABLE_2D_MODE_SHIFT 17
+
+#define DMAC_DMAC_COUNT_EN_MASK 0x00010000
+#define DMAC_DMAC_COUNT_EN_SHIFT 16
+
+#define DMAC_DMAC_COUNT_CNT_MASK 0x0000FFFF
+#define DMAC_DMAC_COUNT_CNT_SHIFT 0
+
+/* register DMAC_PERIPH */
+#define DMAC_DMAC_PERIPH_OFFSET 0x0008
+#define DMAC_DMAC_PERIPH_STRIDE 32
+#define DMAC_DMAC_PERIPH_NO_ENTRIES 6
+
+#define DMAC_DMAC_PERIPH_ACC_DEL_MASK 0xE0000000
+#define DMAC_DMAC_PERIPH_ACC_DEL_SHIFT 29
+
+#define DMAC_DMAC_PERIPH_INCR_MASK 0x08000000
+#define DMAC_DMAC_PERIPH_INCR_SHIFT 27
+
+#define DMAC_DMAC_PERIPH_BURST_MASK 0x07000000
+#define DMAC_DMAC_PERIPH_BURST_SHIFT 24
+
+#define DMAC_DMAC_PERIPH_EXT_BURST_MASK 0x000F0000
+#define DMAC_DMAC_PERIPH_EXT_BURST_SHIFT 16
+
+#define DMAC_DMAC_PERIPH_EXT_SA_MASK 0x0000000F
+#define DMAC_DMAC_PERIPH_EXT_SA_SHIFT 0
+
+/* register DMAC_IRQ_STAT */
+#define DMAC_DMAC_IRQ_STAT_OFFSET 0x000C
+#define DMAC_DMAC_IRQ_STAT_STRIDE 32
+#define DMAC_DMAC_IRQ_STAT_NO_ENTRIES 6
+
+/* register DMAC_PERIPHERAL_ADDR */
+#define DMAC_DMAC_PERIPH_ADDR_OFFSET 0x0014
+#define DMAC_DMAC_PERIPH_ADDR_STRIDE 32
+#define DMAC_DMAC_PERIPH_ADDR_NO_ENTRIES 6
+
+#define DMAC_DMAC_PERIPH_ADDR_ADDR_MASK 0x007FFFFF
+#define DMAC_DMAC_PERIPH_ADDR_ADDR_SHIFT 0
+
+/* register DMAC_PER_HOLD */
+#define DMAC_DMAC_PER_HOLD_OFFSET 0x0018
+#define DMAC_DMAC_PER_HOLD_STRIDE 32
+#define DMAC_DMAC_PER_HOLD_NO_ENTRIES 6
+
+#define DMAC_DMAC_PER_HOLD_PER_HOLD_MASK 0x0000001F
+#define DMAC_DMAC_PER_HOLD_PER_HOLD_SHIFT 0
+
+#define DMAC_DMAC_SOFT_RESET_OFFSET 0x00C0
+
+/* ************************** DMAC-related values *************************** */
+
+/*
+ * This type defines whether the peripheral address is static or
+ * auto-incremented. (see the TRM "Transfer Sequence Linked-list - INCR")
+ */
+enum {
+	DMAC_INCR_OFF         = 0, /* No action, no increment. */
+	DMAC_INCR_ON          = 1, /* Generate address increment. */
+	DMAC_INCR_FORCE32BITS = 0x7FFFFFFFU
+};
+
+/* Burst size settings (see the TRM "Transfer Sequence Linked-list - BURST"). */
+enum {
+	DMAC_BURST_0           = 0x0, /* burst size of 0 */
+	DMAC_BURST_1           = 0x1, /* burst size of 1 */
+	DMAC_BURST_2           = 0x2, /* burst size of 2 */
+	DMAC_BURST_3           = 0x3, /* burst size of 3 */
+	DMAC_BURST_4           = 0x4, /* burst size of 4 */
+	DMAC_BURST_5           = 0x5, /* burst size of 5 */
+	DMAC_BURST_6           = 0x6, /* burst size of 6 */
+	DMAC_BURST_7           = 0x7, /* burst size of 7 */
+	DMAC_BURST_8           = 0x8, /* burst size of 8 */
+	DMAC_BURST_FORCE32BITS = 0x7FFFFFFFU
+};
+
+/*
+ * Extended burst size settings (see TRM "Transfer Sequence Linked-list -
+ * EXT_BURST").
+ */
+enum {
+	DMAC_EXT_BURST_0           = 0x0, /* no extension */
+	DMAC_EXT_BURST_1           = 0x1, /* extension of 8 */
+	DMAC_EXT_BURST_2           = 0x2, /* extension of 16 */
+	DMAC_EXT_BURST_3           = 0x3, /* extension of 24 */
+	DMAC_EXT_BURST_4           = 0x4, /* extension of 32 */
+	DMAC_EXT_BURST_5           = 0x5, /* extension of 40 */
+	DMAC_EXT_BURST_6           = 0x6, /* extension of 48 */
+	DMAC_EXT_BURST_7           = 0x7, /* extension of 56 */
+	DMAC_EXT_BURST_8           = 0x8, /* extension of 64 */
+	DMAC_EXT_BURST_9           = 0x9, /* extension of 72 */
+	DMAC_EXT_BURST_10          = 0xa, /* extension of 80 */
+	DMAC_EXT_BURST_11          = 0xb, /* extension of 88 */
+	DMAC_EXT_BURST_12          = 0xc, /* extension of 96 */
+	DMAC_EXT_BURST_13          = 0xd, /* extension of 104 */
+	DMAC_EXT_BURST_14          = 0xe, /* extension of 112 */
+	DMAC_EXT_BURST_15          = 0xf, /* extension of 120 */
+	DMAC_EXT_BURST_FORCE32BITS = 0x7FFFFFFFU
+};
+
+/* Transfer direction. */
+enum {
+	DMAC_MEM_TO_VXD         = 0x0,
+	DMAC_VXD_TO_MEM         = 0x1,
+	DMAC_VXD_TO_FORCE32BITS = 0x7FFFFFFFU
+};
+
+/* How much to increment the peripheral address. */
+enum {
+	DMAC_PI_1           = 0x2, /* increment by 1 */
+	DMAC_PI_2           = 0x1, /* increment by 2 */
+	DMAC_PI_4           = 0x0, /* increment by 4 */
+	DMAC_PI_FORCE32BITS = 0x7FFFFFFFU
+};
+
+/* Peripheral width settings (see TRM "Transfer Sequence Linked-list - PW"). */
+enum {
+	DMAC_PWIDTH_32_BIT      = 0x0, /* Peripheral width 32-bit. */
+	DMAC_PWIDTH_16_BIT      = 0x1, /* Peripheral width 16-bit. */
+	DMAC_PWIDTH_8_BIT       = 0x2, /* Peripheral width 8-bit. */
+	DMAC_PWIDTH_FORCE32BITS = 0x7FFFFFFFU
+};
+
+/* ******************************* macros ********************************** */
+
+#ifdef PVDEC_SINGLETHREADED_IO
+/* Write to the register */
+#define VXD_WR_REG_ABS(base, addr, val) \
+	({ spin_lock_irqsave(&pvdec_irq_lock, pvdec_irq_flags); \
+	   iowrite32((val), (addr) + (base)); \
+	   spin_unlock_irqrestore(&pvdec_irq_lock, (unsigned long)pvdec_irq_flags); })
+
+/* Read the register */
+#define VXD_RD_REG_ABS(base, addr) \
+	({ unsigned int reg; \
+	   spin_lock_irqsave(&pvdec_irq_lock, pvdec_irq_flags); \
+	   reg = ioread32((addr) + (base)); \
+	   spin_unlock_irqrestore(&pvdec_irq_lock, (unsigned long)pvdec_irq_flags); \
+	   reg; })
+#else /* ndef PVDEC_SINGLETHREADED_IO */
+
+/* Write to the register */
+#define VXD_WR_REG_ABS(base, addr, val) \
+	(iowrite32((val), (addr) + (base)))
+
+/* Read the register */
+#define VXD_RD_REG_ABS(base, addr) \
+	(ioread32((addr) + (base)))
+
+#endif
+
+/* Get offset of a register */
+#define VXD_GET_REG_OFF(group, reg) \
+	(group ## _OFFSET + group ## _ ## reg ## _OFFSET)
+
+/* Get offset of a repated register */
+#define VXD_GET_RPT_REG_OFF(group, reg, index) \
+	(VXD_GET_REG_OFF(group, reg) + ((index) * group ## _ ## reg ## _STRIDE))
+
+/* Extract field from a register */
+#define VXD_RD_REG_FIELD(val, group, reg, field) \
+	(((val) & group ## _ ## reg ## _ ## field ## _MASK) >> \
+	 group ## _ ## reg ## _ ## field ## _SHIFT)
+
+/* Shift provided value by number of bits relevant to register specification */
+#define VXD_ENC_REG_FIELD(group, reg, field, val) \
+	((unsigned int)(val) << (group ## _ ## reg ## _ ## field ## _SHIFT))
+
+/* Update the field in a register */
+#define VXD_WR_REG_FIELD(reg_val, group, reg, field, val) \
+	(((reg_val) & ~(group ## _ ## reg ## _ ## field ## _MASK)) | \
+	 (VXD_ENC_REG_FIELD(group, reg, field, val) & \
+	  (group ## _ ## reg ## _ ## field ## _MASK)))
+
+/* Write to a register */
+#define VXD_WR_REG(base, group, reg, val) \
+	VXD_WR_REG_ABS(base, VXD_GET_REG_OFF(group, reg), val)
+
+/* Write to a repeated register */
+#define VXD_WR_RPT_REG(base, group, reg, val, index) \
+	VXD_WR_REG_ABS(base, VXD_GET_RPT_REG_OFF(group, reg, index), val)
+
+/* Read a register */
+#define VXD_RD_REG(base, group, reg) \
+	VXD_RD_REG_ABS(base, VXD_GET_REG_OFF(group, reg))
+
+/* Read a repeated register */
+#define VXD_RD_RPT_REG(base, group, reg, index) \
+	VXD_RD_REG_ABS(base, VXD_GET_RPT_REG_OFF(group, reg, index))
+
+/* Insert word into the message buffer */
+#define VXD_WR_MSG_WRD(buf, msg_type, wrd, val) \
+	(((unsigned int *)buf)[(msg_type ## _ ## wrd ## _OFFSET) / sizeof(unsigned int)] = \
+		 val)
+
+/* Get a word from the message buffer */
+#define VXD_RD_MSG_WRD(buf, msg_type, wrd) \
+	(((unsigned int *)buf)[(msg_type ## _ ## wrd ## _OFFSET) / sizeof(unsigned int)])
+
+/* Get offset for pipe register */
+#define VXD_GET_PIPE_OFF(num_pipes, pipe) \
+	((num_pipes) > 1 ? ((pipe) << 16) : 0)
+
+#endif /* VXD_PVDEC_REGS_H */
-- 
2.17.1


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  parent reply	other threads:[~2021-08-18 14:12 UTC|newest]

Thread overview: 48+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-08-18 14:10 [PATCH 00/30] TI Video Decoder driver upstreaming to v5.14-rc6 kernel sidraya.bj
2021-08-18 14:10 ` [PATCH 01/30] dt-bindings: Add binding for img,d5500-vxd for DRA8x sidraya.bj
2021-08-18 14:10 ` [PATCH 02/30] v4l: vxd-dec: Create mmu programming helper library sidraya.bj
2021-08-18 14:37   ` Greg KH
2021-08-18 14:10 ` [PATCH 03/30] v4l: vxd-dec: Create vxd_dec Mem Manager " sidraya.bj
2021-08-24 13:34   ` Dan Carpenter
2021-09-14  3:40     ` Sidraya Jayagond
2021-09-14  4:35       ` Greg KH
2021-09-20 18:07         ` Sidraya Jayagond
2021-08-18 14:10 ` sidraya.bj [this message]
2021-08-18 14:10 ` [PATCH 05/30] v4l: vxd-dec: Add IMG VXD Video Decoder mem to mem drive sidraya.bj
2021-08-18 14:10 ` [PATCH 06/30] v4l: vxd-dec: Add hardware control modules sidraya.bj
2021-08-18 14:10 ` [PATCH 07/30] v4l: vxd-dec: Add vxd core module sidraya.bj
2021-08-18 14:10 ` [PATCH 08/30] v4l: vxd-dec: Add translation control modules sidraya.bj
2021-08-18 14:10 ` [PATCH 09/30] v4l: vxd-dec: Add idgen api modules sidraya.bj
2021-08-24 14:00   ` Dan Carpenter
2021-09-14  4:24     ` Sidraya Jayagond
2021-08-18 14:10 ` [PATCH 10/30] v4l: vxd-dec: Add utility modules sidraya.bj
2021-08-18 14:10 ` [PATCH 11/30] v4l: vxd-dec: Add TALMMU module sidraya.bj
2021-08-18 14:10 ` [PATCH 12/30] v4l: vxd-dec: Add VDEC MMU wrapper sidraya.bj
2021-08-18 14:10 ` [PATCH 13/30] v4l: vxd-dec: Add Bistream Preparser (BSPP) module sidraya.bj
2021-08-18 14:10 ` [PATCH 14/30] v4l: vxd-dec: Add common headers sidraya.bj
2021-08-18 14:10 ` [PATCH 15/30] v4l: vxd-dec: Add firmware interface headers sidraya.bj
2021-08-18 14:10 ` [PATCH 16/30] v4l: vxd-dec: Add pool api modules sidraya.bj
2021-08-18 14:10 ` [PATCH 17/30] v4l: vxd-dec: This patch implements resource manage component sidraya.bj
2021-08-18 14:10 ` [PATCH 18/30] v4l: vxd-dec: This patch implements pixel processing library sidraya.bj
2021-08-18 14:10 ` [PATCH 19/30] v4l:vxd-dec:vdecdd utility library sidraya.bj
2021-08-18 14:10 ` [PATCH 20/30] v4l:vxd-dec:Decoder resource component sidraya.bj
2021-08-18 14:10 ` [PATCH 21/30] v4l:vxd-dec:Decoder Core Component sidraya.bj
2021-08-18 14:10 ` [PATCH 22/30] v4l:vxd-dec:vdecdd headers added sidraya.bj
2021-08-18 14:10 ` [PATCH 23/30] v4l:vxd-dec:Decoder Component sidraya.bj
2021-08-18 14:10 ` [PATCH 24/30] v4l:vxd-dec: Add resource manager sidraya.bj
2021-08-18 14:38   ` Greg KH
2021-08-18 14:10 ` [PATCH 25/30] v4l: videodev2: Add 10bit definitions for NV12 and NV16 color formats sidraya.bj
2021-08-24 16:14   ` Nicolas Dufresne
2021-08-18 14:10 ` [PATCH 26/30] media: Kconfig: Add Video decoder kconfig and Makefile entries sidraya.bj
2021-08-18 14:10 ` [PATCH 27/30] media: platform: vxd: Kconfig: Add Video decoder Kconfig and Makefile sidraya.bj
2021-08-18 18:24   ` kernel test robot
2021-08-19  5:59   ` kernel test robot
2021-08-18 14:10 ` [PATCH 28/30] IMG DEC V4L2 Interface function implementations sidraya.bj
2021-08-18 19:22   ` kernel test robot
2021-08-18 14:10 ` [PATCH 29/30] arm64: dts: dra82: Add v4l2 vxd_dec device node sidraya.bj
2021-08-18 16:44   ` Nishanth Menon
2021-08-18 14:10 ` [PATCH 30/30] ARM64: ti_sdk_arm64_release_defconfig: Enable d5520 video decoder driver sidraya.bj
2021-08-18 14:25   ` Bajjuri, Praneeth
2021-08-18 16:35   ` Nishanth Menon
2021-08-24 13:06 ` [PATCH 00/30] TI Video Decoder driver upstreaming to v5.14-rc6 kernel Hans Verkuil
2021-08-24 13:36 ` Dan Carpenter

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