[PATCH v9 06/13] media: amphion: add vpu v4l2 m2m support
From: Ming Qian
Date: Mon Sep 13 2021 - 05:12:30 EST
vpu_v4l2.c implements the v4l2 m2m driver methods.
vpu_helpers.c implements the common helper functions
vpu_color.c converts the v4l2 colorspace with iso
Signed-off-by: Ming Qian <ming.qian@xxxxxxx>
Signed-off-by: Shijie Qin <shijie.qin@xxxxxxx>
Signed-off-by: Zhou Peng <eagle.zhou@xxxxxxx>
Reported-by: kernel test robot <lkp@xxxxxxxxx>
---
drivers/media/platform/amphion/vpu_color.c | 192 ++++++
drivers/media/platform/amphion/vpu_helpers.c | 453 ++++++++++++++
drivers/media/platform/amphion/vpu_helpers.h | 72 +++
drivers/media/platform/amphion/vpu_v4l2.c | 625 +++++++++++++++++++
drivers/media/platform/amphion/vpu_v4l2.h | 53 ++
5 files changed, 1395 insertions(+)
create mode 100644 drivers/media/platform/amphion/vpu_color.c
create mode 100644 drivers/media/platform/amphion/vpu_helpers.c
create mode 100644 drivers/media/platform/amphion/vpu_helpers.h
create mode 100644 drivers/media/platform/amphion/vpu_v4l2.c
create mode 100644 drivers/media/platform/amphion/vpu_v4l2.h
diff --git a/drivers/media/platform/amphion/vpu_color.c b/drivers/media/platform/amphion/vpu_color.c
new file mode 100644
index 000000000000..29d1d5edc901
--- /dev/null
+++ b/drivers/media/platform/amphion/vpu_color.c
@@ -0,0 +1,192 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright 2020-2021 NXP
+ */
+
+#define TAG "COLOR"
+
+#include <linux/init.h>
+#include <linux/device.h>
+#include <linux/ioctl.h>
+#include <linux/list.h>
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/slab.h>
+#include <linux/delay.h>
+#include <linux/types.h>
+#include <media/v4l2-device.h>
+#include "vpu.h"
+#include "vpu_helpers.h"
+
+static const u8 colorprimaries[] = {
+ 0,
+ V4L2_COLORSPACE_REC709, /*Rec. ITU-R BT.709-6*/
+ 0,
+ 0,
+ V4L2_COLORSPACE_470_SYSTEM_M, /*Rec. ITU-R BT.470-6 System M*/
+ V4L2_COLORSPACE_470_SYSTEM_BG,/*Rec. ITU-R BT.470-6 System B, G*/
+ V4L2_COLORSPACE_SMPTE170M, /*SMPTE170M*/
+ V4L2_COLORSPACE_SMPTE240M, /*SMPTE240M*/
+ 0, /*Generic film*/
+ V4L2_COLORSPACE_BT2020, /*Rec. ITU-R BT.2020-2*/
+ 0, /*SMPTE ST 428-1*/
+};
+
+static const u8 colortransfers[] = {
+ 0,
+ V4L2_XFER_FUNC_709, /*Rec. ITU-R BT.709-6*/
+ 0,
+ 0,
+ 0, /*Rec. ITU-R BT.470-6 System M*/
+ 0, /*Rec. ITU-R BT.470-6 System B, G*/
+ V4L2_XFER_FUNC_709, /*SMPTE170M*/
+ V4L2_XFER_FUNC_SMPTE240M,/*SMPTE240M*/
+ V4L2_XFER_FUNC_NONE, /*Linear transfer characteristics*/
+ 0,
+ 0,
+ 0, /*IEC 61966-2-4*/
+ 0, /*Rec. ITU-R BT.1361-0 extended colour gamut*/
+ V4L2_XFER_FUNC_SRGB, /*IEC 61966-2-1 sRGB or sYCC*/
+ V4L2_XFER_FUNC_709, /*Rec. ITU-R BT.2020-2 (10 bit system)*/
+ V4L2_XFER_FUNC_709, /*Rec. ITU-R BT.2020-2 (12 bit system)*/
+ V4L2_XFER_FUNC_SMPTE2084,/*SMPTE ST 2084*/
+ 0, /*SMPTE ST 428-1*/
+ 0 /*Rec. ITU-R BT.2100-0 hybrid log-gamma (HLG)*/
+};
+
+static const u8 colormatrixcoefs[] = {
+ 0,
+ V4L2_YCBCR_ENC_709, /*Rec. ITU-R BT.709-6*/
+ 0,
+ 0,
+ 0, /*Title 47 Code of Federal Regulations*/
+ V4L2_YCBCR_ENC_601, /*Rec. ITU-R BT.601-7 625*/
+ V4L2_YCBCR_ENC_601, /*Rec. ITU-R BT.601-7 525*/
+ V4L2_YCBCR_ENC_SMPTE240M, /*SMPTE240M*/
+ 0,
+ V4L2_YCBCR_ENC_BT2020, /*Rec. ITU-R BT.2020-2*/
+ V4L2_YCBCR_ENC_BT2020_CONST_LUM /*Rec. ITU-R BT.2020-2 constant*/
+};
+
+u32 vpu_color_cvrt_primaries_v2i(u32 primaries)
+{
+ return VPU_ARRAY_FIND(colorprimaries, primaries);
+}
+
+u32 vpu_color_cvrt_primaries_i2v(u32 primaries)
+{
+ return VPU_ARRAY_AT(colorprimaries, primaries);
+}
+
+u32 vpu_color_cvrt_transfers_v2i(u32 transfers)
+{
+ return VPU_ARRAY_FIND(colortransfers, transfers);
+}
+
+u32 vpu_color_cvrt_transfers_i2v(u32 transfers)
+{
+ return VPU_ARRAY_AT(colortransfers, transfers);
+}
+
+u32 vpu_color_cvrt_matrix_v2i(u32 matrix)
+{
+ return VPU_ARRAY_FIND(colormatrixcoefs, matrix);
+}
+
+u32 vpu_color_cvrt_matrix_i2v(u32 matrix)
+{
+ return VPU_ARRAY_AT(colormatrixcoefs, matrix);
+}
+
+u32 vpu_color_cvrt_full_range_v2i(u32 full_range)
+{
+ return (full_range == V4L2_QUANTIZATION_FULL_RANGE);
+}
+
+u32 vpu_color_cvrt_full_range_i2v(u32 full_range)
+{
+ if (full_range)
+ return V4L2_QUANTIZATION_FULL_RANGE;
+
+ return V4L2_QUANTIZATION_LIM_RANGE;
+}
+
+int vpu_color_check_primaries(u32 primaries)
+{
+ return vpu_color_cvrt_primaries_v2i(primaries) ? 0 : -EINVAL;
+}
+
+int vpu_color_check_transfers(u32 transfers)
+{
+ return vpu_color_cvrt_transfers_v2i(transfers) ? 0 : -EINVAL;
+}
+
+int vpu_color_check_matrix(u32 matrix)
+{
+ return vpu_color_cvrt_matrix_v2i(matrix) ? 0 : -EINVAL;
+}
+
+int vpu_color_check_full_range(u32 full_range)
+{
+ int ret = -EINVAL;
+
+ switch (full_range) {
+ case V4L2_QUANTIZATION_FULL_RANGE:
+ case V4L2_QUANTIZATION_LIM_RANGE:
+ ret = 0;
+ break;
+ default:
+ break;
+
+ }
+
+ return ret;
+}
+
+int vpu_color_get_default(u32 primaries,
+ u32 *ptransfers, u32 *pmatrix, u32 *pfull_range)
+{
+ u32 transfers;
+ u32 matrix;
+ u32 full_range;
+
+ switch (primaries) {
+ case V4L2_COLORSPACE_REC709:
+ transfers = V4L2_XFER_FUNC_709;
+ matrix = V4L2_YCBCR_ENC_709;
+ full_range = V4L2_QUANTIZATION_LIM_RANGE;
+ break;
+ case V4L2_COLORSPACE_470_SYSTEM_M:
+ case V4L2_COLORSPACE_470_SYSTEM_BG:
+ case V4L2_COLORSPACE_SMPTE170M:
+ transfers = V4L2_XFER_FUNC_709;
+ matrix = V4L2_YCBCR_ENC_601;
+ full_range = V4L2_QUANTIZATION_LIM_RANGE;
+ break;
+ case V4L2_COLORSPACE_SMPTE240M:
+ transfers = V4L2_XFER_FUNC_SMPTE240M;
+ matrix = V4L2_YCBCR_ENC_SMPTE240M;
+ full_range = V4L2_QUANTIZATION_LIM_RANGE;
+ break;
+ case V4L2_COLORSPACE_BT2020:
+ transfers = V4L2_XFER_FUNC_709;
+ matrix = V4L2_YCBCR_ENC_BT2020;
+ full_range = V4L2_QUANTIZATION_LIM_RANGE;
+ break;
+ default:
+ transfers = V4L2_XFER_FUNC_709;
+ matrix = V4L2_YCBCR_ENC_709;
+ full_range = V4L2_QUANTIZATION_LIM_RANGE;
+ break;
+ }
+
+ if (ptransfers)
+ *ptransfers = transfers;
+ if (pmatrix)
+ *pmatrix = matrix;
+ if (pfull_range)
+ *pfull_range = full_range;
+
+
+ return 0;
+}
diff --git a/drivers/media/platform/amphion/vpu_helpers.c b/drivers/media/platform/amphion/vpu_helpers.c
new file mode 100644
index 000000000000..484575d2975e
--- /dev/null
+++ b/drivers/media/platform/amphion/vpu_helpers.c
@@ -0,0 +1,453 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright 2020-2021 NXP
+ */
+
+#define TAG "HELPER"
+#include <linux/init.h>
+#include <linux/interconnect.h>
+#include <linux/ioctl.h>
+#include <linux/list.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/platform_device.h>
+#include "vpu.h"
+#include "vpu_core.h"
+#include "vpu_rpc.h"
+#include "vpu_helpers.h"
+#include "vpu_log.h"
+
+int vpu_helper_find_in_array_u8(const u8 *array, u32 size, u32 x)
+{
+ int i;
+
+ for (i = 0; i < size; i++) {
+ if (array[i] == x)
+ return i;
+ }
+
+ return 0;
+}
+
+bool vpu_helper_check_type(struct vpu_inst *inst, u32 type)
+{
+ const struct vpu_format *pfmt;
+
+ for (pfmt = inst->formats; pfmt->pixfmt; pfmt++) {
+ if (vpu_core_check_fmt(inst->core, pfmt->pixfmt))
+ continue;
+ if (pfmt->type == type)
+ return true;
+ }
+
+ return false;
+}
+
+const struct vpu_format *vpu_helper_find_format(struct vpu_inst *inst, u32 type, u32 pixelfmt)
+{
+ const struct vpu_format *pfmt;
+
+ if (!inst || !inst->formats)
+ return NULL;
+
+ if (vpu_core_check_fmt(inst->core, pixelfmt))
+ return NULL;
+
+ for (pfmt = inst->formats; pfmt->pixfmt; pfmt++) {
+ if (vpu_core_check_fmt(inst->core, pfmt->pixfmt))
+ continue;
+
+ if (pfmt->pixfmt == pixelfmt && (!type || type == pfmt->type))
+ return pfmt;
+ }
+
+ return NULL;
+}
+
+const struct vpu_format *vpu_helper_enum_format(struct vpu_inst *inst, u32 type, int index)
+{
+ const struct vpu_format *pfmt;
+ int i = 0;
+
+ if (!inst || !inst->formats)
+ return NULL;
+
+ for (pfmt = inst->formats; pfmt->pixfmt; pfmt++) {
+ if (vpu_core_check_fmt(inst->core, pfmt->pixfmt))
+ continue;
+
+ if (pfmt->type == type) {
+ if (index == i)
+ return pfmt;
+ i++;
+ }
+ }
+
+ return NULL;
+}
+
+u32 vpu_helper_valid_frame_width(struct vpu_inst *inst, u32 width)
+{
+ const struct vpu_core_resources *res;
+
+ if (!inst || !inst->core || !inst->core->res)
+ return width;
+
+ res = inst->core->res;
+ if (res->max_width)
+ width = clamp(width, res->min_width, res->max_width);
+ if (res->step_width)
+ width = ALIGN(width, res->step_width);
+
+ return width;
+}
+
+u32 vpu_helper_valid_frame_height(struct vpu_inst *inst, u32 height)
+{
+ const struct vpu_core_resources *res;
+
+ if (!inst || !inst->core || !inst->core->res)
+ return height;
+
+ res = inst->core->res;
+ if (res->max_height)
+ height = clamp(height, res->min_height, res->max_height);
+ if (res->step_height)
+ height = ALIGN(height, res->step_height);
+
+ return height;
+}
+
+u32 vpu_helper_get_frame_size(u32 fmt, u32 width, u32 height)
+{
+ switch (fmt) {
+ case V4L2_PIX_FMT_NV12:
+ return ((width * 3) >> 1) * height;
+ default:
+ return width * height;
+ }
+}
+
+static u32 get_nv12_plane_size(u32 width, u32 height, int plane_no,
+ u32 stride, u32 interlaced, u32 *pbl)
+{
+ u32 bytesperline;
+ u32 size = 0;
+
+ bytesperline = ALIGN(width, stride);
+ height = ALIGN(height, 2);
+ if (plane_no == 0)
+ size = bytesperline * height;
+ else
+ size = bytesperline * height >> 1;
+
+ if (pbl)
+ *pbl = bytesperline;
+
+ return size;
+}
+
+static u32 get_tiled_8l128_plane_size(u32 fmt, u32 width, u32 height, int plane_no,
+ u32 stride, u32 interlaced, u32 *pbl)
+{
+ u32 ws = 3;
+ u32 hs = 7;
+ u32 bitdepth = 8;
+ u32 bytesperline;
+ u32 size = 0;
+
+ if (interlaced)
+ hs++;
+ if (fmt == V4L2_PIX_FMT_NV12_10BE_8L128)
+ bitdepth = 10;
+ bytesperline = DIV_ROUND_UP(width * bitdepth, BITS_PER_BYTE);
+ bytesperline = ALIGN(bytesperline, 1 << ws);
+ bytesperline = ALIGN(bytesperline, stride);
+ height = ALIGN(height, 1 << hs);
+ if (plane_no == 0)
+ size = bytesperline * height;
+ else if (plane_no == 1)
+ size = (bytesperline * ALIGN(height, 1 << (hs + 1))) >> 1;
+
+ if (pbl)
+ *pbl = bytesperline;
+
+ return size;
+}
+
+static u32 get_default_plane_size(u32 width, u32 height, int plane_no,
+ u32 stride, u32 interlaced, u32 *pbl)
+{
+ u32 bytesperline;
+ u32 size = 0;
+
+ bytesperline = ALIGN(width, stride);
+ if (plane_no == 0)
+ size = bytesperline * height;
+
+ if (pbl)
+ *pbl = bytesperline;
+
+ return size;
+}
+
+u32 vpu_helper_get_plane_size(u32 fmt, u32 w, u32 h, int plane_no,
+ u32 stride, u32 interlaced, u32 *pbl)
+{
+ switch (fmt) {
+ case V4L2_PIX_FMT_NV12:
+ return get_nv12_plane_size(w, h, plane_no, stride, interlaced, pbl);
+ case V4L2_PIX_FMT_NV12_8L128:
+ case V4L2_PIX_FMT_NV12_10BE_8L128:
+ return get_tiled_8l128_plane_size(fmt, w, h, plane_no, stride, interlaced, pbl);
+ default:
+ return get_default_plane_size(w, h, plane_no, stride, interlaced, pbl);
+ }
+}
+
+u32 vpu_helper_copy_from_stream_buffer(struct vpu_buffer *stream_buffer,
+ u32 *rptr, u32 size, void *dst)
+{
+ u32 offset;
+ u32 start;
+ u32 end;
+ void *virt;
+
+ if (!stream_buffer || !rptr || !dst)
+ return -EINVAL;
+
+ if (!size)
+ return 0;
+
+ offset = *rptr;
+ start = stream_buffer->phys;
+ end = start + stream_buffer->length;
+ virt = stream_buffer->virt;
+
+ if (offset < start || offset > end) {
+ vpu_err("rptr 0x%x is out of range [0x%x, 0x%x]\n",
+ offset, start, end);
+ return -EINVAL;
+ }
+
+ if (offset + size <= end) {
+ memcpy(dst, virt + (offset - start), size);
+ } else {
+ memcpy(dst, virt + (offset - start), end - offset);
+ memcpy(dst + end - offset, virt, size + offset - end);
+ }
+
+ *rptr = vpu_helper_step_walk(stream_buffer, offset, size);
+ return size;
+}
+
+u32 vpu_helper_copy_to_stream_buffer(struct vpu_buffer *stream_buffer,
+ u32 *wptr, u32 size, void *src)
+{
+ u32 offset;
+ u32 start;
+ u32 end;
+ void *virt;
+
+ if (!stream_buffer || !wptr || !src)
+ return -EINVAL;
+
+ if (!size)
+ return 0;
+
+ offset = *wptr;
+ start = stream_buffer->phys;
+ end = start + stream_buffer->length;
+ virt = stream_buffer->virt;
+ if (offset < start || offset > end) {
+ vpu_err("wptr 0x%x is out of range [0x%x, 0x%x]\n",
+ offset, start, end);
+ return -EINVAL;
+ }
+
+ if (offset + size <= end) {
+ memcpy(virt + (offset - start), src, size);
+ } else {
+ memcpy(virt + (offset - start), src, end - offset);
+ memcpy(virt, src + end - offset, size + offset - end);
+ }
+
+ *wptr = vpu_helper_step_walk(stream_buffer, offset, size);
+
+ return size;
+}
+
+u32 vpu_helper_memset_stream_buffer(struct vpu_buffer *stream_buffer,
+ u32 *wptr, u8 val, u32 size)
+{
+ u32 offset;
+ u32 start;
+ u32 end;
+ void *virt;
+
+ if (!stream_buffer || !wptr)
+ return -EINVAL;
+
+ if (!size)
+ return 0;
+
+ offset = *wptr;
+ start = stream_buffer->phys;
+ end = start + stream_buffer->length;
+ virt = stream_buffer->virt;
+ if (offset < start || offset > end) {
+ vpu_err("wptr 0x%x is out of range [0x%x, 0x%x]\n",
+ offset, start, end);
+ return -EINVAL;
+ }
+
+ if (offset + size <= end) {
+ memset(virt + (offset - start), val, size);
+ } else {
+ memset(virt + (offset - start), val, end - offset);
+ memset(virt, val, size + offset - end);
+ }
+
+ offset += size;
+ if (offset >= end)
+ offset -= stream_buffer->length;
+
+ *wptr = offset;
+
+ return size;
+}
+
+u32 vpu_helper_get_free_space(struct vpu_inst *inst)
+{
+ struct vpu_rpc_buffer_desc desc;
+
+ if (vpu_iface_get_stream_buffer_desc(inst, &desc))
+ return 0;
+
+ if (desc.rptr > desc.wptr)
+ return desc.rptr - desc.wptr;
+ else if (desc.rptr < desc.wptr)
+ return (desc.end - desc.start + desc.rptr - desc.wptr);
+ else
+ return desc.end - desc.start;
+}
+
+u32 vpu_helper_get_used_space(struct vpu_inst *inst)
+{
+ struct vpu_rpc_buffer_desc desc;
+
+ if (vpu_iface_get_stream_buffer_desc(inst, &desc))
+ return 0;
+
+ if (desc.wptr > desc.rptr)
+ return desc.wptr - desc.rptr;
+ else if (desc.wptr < desc.rptr)
+ return (desc.end - desc.start + desc.wptr - desc.rptr);
+ else
+ return 0;
+}
+
+int vpu_helper_g_volatile_ctrl(struct v4l2_ctrl *ctrl)
+{
+ struct vpu_inst *inst = ctrl_to_inst(ctrl);
+
+ switch (ctrl->id) {
+ case V4L2_CID_MIN_BUFFERS_FOR_CAPTURE:
+ ctrl->val = inst->min_buffer_cap;
+ break;
+ case V4L2_CID_MIN_BUFFERS_FOR_OUTPUT:
+ ctrl->val = inst->min_buffer_out;
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ return 0;
+}
+
+u32 vpu_helper_calc_coprime(u32 *a, u32 *b)
+{
+ int m = *a;
+ int n = *b;
+
+ if (m == 0)
+ return n;
+ if (n == 0)
+ return m;
+
+ while (n != 0) {
+ int tmp = m % n;
+
+ m = n;
+ n = tmp;
+ }
+ *a = (*a) / m;
+ *b = (*b) / m;
+
+ return m;
+}
+
+#define READ_BYTE(buffer, pos) (*(u8 *)((buffer)->virt + ((pos) % buffer->length)))
+int vpu_helper_find_startcode(struct vpu_buffer *stream_buffer,
+ u32 pixelformat, u32 offset, u32 bytesused)
+{
+ u32 start_code;
+ int start_code_size;
+ u32 val = 0;
+ int i;
+ int ret = -EINVAL;
+
+ if (!stream_buffer || !stream_buffer->virt)
+ return -EINVAL;
+
+ switch (pixelformat) {
+ case V4L2_PIX_FMT_H264:
+ start_code_size = 4;
+ start_code = 0x00000001;
+ break;
+ default:
+ return 0;
+ }
+
+ for (i = 0; i < bytesused; i++) {
+ val = (val << 8) | READ_BYTE(stream_buffer, offset + i);
+ if (i < start_code_size - 1)
+ continue;
+ if (val == start_code) {
+ ret = i + 1 - start_code_size;
+ break;
+ }
+ }
+
+ return ret;
+}
+
+int vpu_find_dst_by_src(struct vpu_pair *pairs, u32 cnt, u32 src)
+{
+ u32 i;
+
+ if (!pairs || !cnt)
+ return -EINVAL;
+
+ for (i = 0; i < cnt; i++) {
+ if (pairs[i].src == src)
+ return pairs[i].dst;
+ }
+
+ return -EINVAL;
+}
+
+int vpu_find_src_by_dst(struct vpu_pair *pairs, u32 cnt, u32 dst)
+{
+ u32 i;
+
+ if (!pairs || !cnt)
+ return -EINVAL;
+
+ for (i = 0; i < cnt; i++) {
+ if (pairs[i].dst == dst)
+ return pairs[i].src;
+ }
+
+ return -EINVAL;
+}
diff --git a/drivers/media/platform/amphion/vpu_helpers.h b/drivers/media/platform/amphion/vpu_helpers.h
new file mode 100644
index 000000000000..22029eab7b56
--- /dev/null
+++ b/drivers/media/platform/amphion/vpu_helpers.h
@@ -0,0 +1,72 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * Copyright 2020-2021 NXP
+ */
+
+#ifndef _AMPHION_VPU_HELPERS_H
+#define _AMPHION_VPU_HELPERS_H
+
+struct vpu_pair {
+ u32 src;
+ u32 dst;
+};
+
+#define MAKE_TIMESTAMP(s, ns) (((s32)(s) * NSEC_PER_SEC) + (ns))
+#define VPU_INVALID_TIMESTAMP MAKE_TIMESTAMP(-1, 0)
+#define VPU_ARRAY_AT(array, i) (((i) < ARRAY_SIZE(array)) ? array[i] : 0)
+#define VPU_ARRAY_FIND(array, x) vpu_helper_find_in_array_u8(array, ARRAY_SIZE(array), x)
+
+int vpu_helper_find_in_array_u8(const u8 *array, u32 size, u32 x);
+bool vpu_helper_check_type(struct vpu_inst *inst, u32 type);
+const struct vpu_format *vpu_helper_find_format(struct vpu_inst *inst, u32 type, u32 pixelfmt);
+const struct vpu_format *vpu_helper_enum_format(struct vpu_inst *inst, u32 type, int index);
+u32 vpu_helper_valid_frame_width(struct vpu_inst *inst, u32 width);
+u32 vpu_helper_valid_frame_height(struct vpu_inst *inst, u32 height);
+u32 vpu_helper_get_frame_size(u32 fmt, u32 width, u32 height);
+u32 vpu_helper_get_plane_size(u32 fmt, u32 width, u32 height, int plane_no,
+ u32 stride, u32 interlaced, u32 *pbl);
+u32 vpu_helper_copy_from_stream_buffer(struct vpu_buffer *stream_buffer,
+ u32 *rptr, u32 size, void *dst);
+u32 vpu_helper_copy_to_stream_buffer(struct vpu_buffer *stream_buffer,
+ u32 *wptr, u32 size, void *src);
+u32 vpu_helper_memset_stream_buffer(struct vpu_buffer *stream_buffer,
+ u32 *wptr, u8 val, u32 size);
+u32 vpu_helper_get_free_space(struct vpu_inst *inst);
+u32 vpu_helper_get_used_space(struct vpu_inst *inst);
+int vpu_helper_g_volatile_ctrl(struct v4l2_ctrl *ctrl);
+u32 vpu_helper_calc_coprime(u32 *a, u32 *b);
+void vpu_helper_get_kmp_next(const u8 *pattern, int *next, int size);
+int vpu_helper_kmp_search(u8 *s, int s_len, const u8 *p, int p_len, int *next);
+int vpu_helper_kmp_search_in_stream_buffer(struct vpu_buffer *stream_buffer,
+ u32 offset, int bytesused,
+ const u8 *p, int p_len, int *next);
+int vpu_helper_find_startcode(struct vpu_buffer *stream_buffer,
+ u32 pixelformat, u32 offset, u32 bytesused);
+
+static inline u32 vpu_helper_step_walk(struct vpu_buffer *stream_buffer, u32 pos, u32 step)
+{
+ pos += step;
+ if (pos > stream_buffer->phys + stream_buffer->length)
+ pos -= stream_buffer->length;
+
+ return pos;
+}
+
+int vpu_color_check_primaries(u32 primaries);
+int vpu_color_check_transfers(u32 transfers);
+int vpu_color_check_matrix(u32 matrix);
+int vpu_color_check_full_range(u32 full_range);
+u32 vpu_color_cvrt_primaries_v2i(u32 primaries);
+u32 vpu_color_cvrt_primaries_i2v(u32 primaries);
+u32 vpu_color_cvrt_transfers_v2i(u32 transfers);
+u32 vpu_color_cvrt_transfers_i2v(u32 transfers);
+u32 vpu_color_cvrt_matrix_v2i(u32 matrix);
+u32 vpu_color_cvrt_matrix_i2v(u32 matrix);
+u32 vpu_color_cvrt_full_range_v2i(u32 full_range);
+u32 vpu_color_cvrt_full_range_i2v(u32 full_range);
+int vpu_color_get_default(u32 primaries,
+ u32 *ptransfers, u32 *pmatrix, u32 *pfull_range);
+
+int vpu_find_dst_by_src(struct vpu_pair *pairs, u32 cnt, u32 src);
+int vpu_find_src_by_dst(struct vpu_pair *pairs, u32 cnt, u32 dst);
+#endif
diff --git a/drivers/media/platform/amphion/vpu_v4l2.c b/drivers/media/platform/amphion/vpu_v4l2.c
new file mode 100644
index 000000000000..eb764c5d48e5
--- /dev/null
+++ b/drivers/media/platform/amphion/vpu_v4l2.c
@@ -0,0 +1,625 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright 2020-2021 NXP
+ */
+
+#define TAG "V4L2"
+#include <linux/init.h>
+#include <linux/interconnect.h>
+#include <linux/ioctl.h>
+#include <linux/list.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/pm_runtime.h>
+#include <linux/videodev2.h>
+#include <media/v4l2-device.h>
+#include <media/v4l2-event.h>
+#include <media/v4l2-mem2mem.h>
+#include <media/v4l2-ioctl.h>
+#include <media/videobuf2-v4l2.h>
+#include <media/videobuf2-dma-contig.h>
+#include <media/videobuf2-vmalloc.h>
+#include "vpu.h"
+#include "vpu_core.h"
+#include "vpu_v4l2.h"
+#include "vpu_msgs.h"
+#include "vpu_helpers.h"
+#include "vpu_log.h"
+
+void vpu_inst_lock(struct vpu_inst *inst)
+{
+ mutex_lock(&inst->lock);
+}
+
+void vpu_inst_unlock(struct vpu_inst *inst)
+{
+ mutex_unlock(&inst->lock);
+}
+
+dma_addr_t vpu_get_vb_phy_addr(struct vb2_buffer *vb, u32 plane_no)
+{
+ return vb2_dma_contig_plane_dma_addr(vb, plane_no) +
+ vb->planes[plane_no].data_offset;
+}
+
+unsigned int vpu_get_vb_length(struct vb2_buffer *vb, u32 plane_no)
+{
+ if (plane_no >= vb->num_planes)
+ return 0;
+ return vb2_plane_size(vb, plane_no) - vb->planes[plane_no].data_offset;
+}
+
+void vpu_v4l2_set_error(struct vpu_inst *inst)
+{
+ struct vb2_queue *src_q = v4l2_m2m_get_src_vq(inst->m2m_ctx);
+ struct vb2_queue *dst_q = v4l2_m2m_get_dst_vq(inst->m2m_ctx);
+
+ if (src_q)
+ src_q->error = 1;
+ if (dst_q)
+ dst_q->error = 1;
+}
+
+int vpu_notify_eos(struct vpu_inst *inst)
+{
+ const struct v4l2_event ev = {
+ .id = 0,
+ .type = V4L2_EVENT_EOS
+ };
+
+ inst_dbg(inst, LVL_FLOW, "notify eos event\n");
+ v4l2_event_queue_fh(&inst->fh, &ev);
+
+ return 0;
+}
+
+int vpu_notify_source_change(struct vpu_inst *inst)
+{
+ const struct v4l2_event ev = {
+ .id = 0,
+ .type = V4L2_EVENT_SOURCE_CHANGE,
+ .u.src_change.changes = V4L2_EVENT_SRC_CH_RESOLUTION
+ };
+
+ inst_dbg(inst, LVL_FLOW, "notify source change event\n");
+ v4l2_event_queue_fh(&inst->fh, &ev);
+ return 0;
+}
+
+const struct vpu_format *vpu_try_fmt_common(struct vpu_inst *inst,
+ struct v4l2_format *f)
+{
+ struct v4l2_pix_format_mplane *pixmp = &f->fmt.pix_mp;
+ u32 type = f->type;
+ u32 stride;
+ u32 bytesperline;
+ u32 sizeimage;
+ const struct vpu_format *fmt;
+ int i;
+
+ fmt = vpu_helper_find_format(inst, type, pixmp->pixelformat);
+ if (!fmt) {
+ fmt = vpu_helper_enum_format(inst, type, 0);
+ if (!fmt)
+ return NULL;
+ pixmp->pixelformat = fmt->pixfmt;
+ }
+
+ stride = inst->core->res->stride;
+ pixmp->width = vpu_helper_valid_frame_width(inst, pixmp->width);
+ pixmp->height = vpu_helper_valid_frame_height(inst, pixmp->height);
+ pixmp->flags = fmt->flags;
+ pixmp->num_planes = fmt->num_planes;
+ if (pixmp->field == V4L2_FIELD_ANY)
+ pixmp->field = V4L2_FIELD_NONE;
+ for (i = 0; i < pixmp->num_planes; i++) {
+ sizeimage = vpu_helper_get_plane_size(pixmp->pixelformat,
+ pixmp->width, pixmp->height, i, stride,
+ pixmp->field == V4L2_FIELD_INTERLACED ? 1 : 0,
+ &bytesperline);
+ if ((s32)(pixmp->plane_fmt[i].bytesperline) <= 0)
+ pixmp->plane_fmt[i].bytesperline = bytesperline;
+ if ((s32)(pixmp->plane_fmt[i].sizeimage) <= 0)
+ pixmp->plane_fmt[i].sizeimage = sizeimage;
+ if (pixmp->plane_fmt[i].bytesperline < bytesperline)
+ pixmp->plane_fmt[i].bytesperline = bytesperline;
+ if (pixmp->plane_fmt[i].sizeimage <= sizeimage)
+ pixmp->plane_fmt[i].sizeimage = sizeimage;
+ }
+
+ return fmt;
+}
+
+static bool vpu_check_ready(struct vpu_inst *inst, u32 type)
+{
+ if (!inst)
+ return false;
+ if (inst->state == VPU_CODEC_STATE_DEINIT || inst->id < 0)
+ return false;
+ if (!inst->ops->check_ready)
+ return true;
+ return call_vop(inst, check_ready, type);
+}
+
+int vpu_process_output_buffer(struct vpu_inst *inst)
+{
+ struct v4l2_m2m_buffer *buf = NULL;
+ struct vpu_vb2_buffer *vpu_buf = NULL;
+
+ if (!inst)
+ return -EINVAL;
+
+ if (!vpu_check_ready(inst, inst->out_format.type))
+ return -EINVAL;
+
+ v4l2_m2m_for_each_src_buf(inst->m2m_ctx, buf) {
+ vpu_buf = container_of(buf, struct vpu_vb2_buffer, m2m_buf);
+ if (vpu_buf->state == VPU_BUF_STATE_IDLE)
+ break;
+ vpu_buf = NULL;
+ }
+
+ if (!vpu_buf)
+ return -EINVAL;
+
+ inst_dbg(inst, LVL_DEBUG, "frame id = %d / %d\n",
+ vpu_buf->m2m_buf.vb.sequence, inst->sequence);
+ return call_vop(inst, process_output, &vpu_buf->m2m_buf.vb.vb2_buf);
+}
+
+int vpu_process_capture_buffer(struct vpu_inst *inst)
+{
+ struct v4l2_m2m_buffer *buf = NULL;
+ struct vpu_vb2_buffer *vpu_buf = NULL;
+
+ if (!inst)
+ return -EINVAL;
+
+ if (!vpu_check_ready(inst, inst->cap_format.type))
+ return -EINVAL;
+
+ v4l2_m2m_for_each_dst_buf(inst->m2m_ctx, buf) {
+ vpu_buf = container_of(buf, struct vpu_vb2_buffer, m2m_buf);
+ if (vpu_buf->state == VPU_BUF_STATE_IDLE)
+ break;
+ vpu_buf = NULL;
+ }
+ if (!vpu_buf)
+ return -EINVAL;
+
+ return call_vop(inst, process_capture, &vpu_buf->m2m_buf.vb.vb2_buf);
+}
+
+struct vb2_v4l2_buffer *vpu_find_buf_by_sequence(struct vpu_inst *inst,
+ u32 type, u32 sequence)
+{
+ struct v4l2_m2m_buffer *buf = NULL;
+ struct vb2_v4l2_buffer *vbuf = NULL;
+
+ if (V4L2_TYPE_IS_OUTPUT(type)) {
+ v4l2_m2m_for_each_src_buf(inst->m2m_ctx, buf) {
+ vbuf = &buf->vb;
+ if (vbuf->sequence == sequence)
+ break;
+ vbuf = NULL;
+ }
+ } else {
+ v4l2_m2m_for_each_dst_buf(inst->m2m_ctx, buf) {
+ vbuf = &buf->vb;
+ if (vbuf->sequence == sequence)
+ break;
+ vbuf = NULL;
+ }
+ }
+
+ return vbuf;
+}
+
+struct vb2_v4l2_buffer *vpu_find_buf_by_idx(struct vpu_inst *inst,
+ u32 type, u32 idx)
+{
+ struct v4l2_m2m_buffer *buf = NULL;
+ struct vb2_v4l2_buffer *vbuf = NULL;
+
+ if (V4L2_TYPE_IS_OUTPUT(type)) {
+ v4l2_m2m_for_each_src_buf(inst->m2m_ctx, buf) {
+ vbuf = &buf->vb;
+ if (vbuf->vb2_buf.index == idx)
+ break;
+ vbuf = NULL;
+ }
+ } else {
+ v4l2_m2m_for_each_dst_buf(inst->m2m_ctx, buf) {
+ vbuf = &buf->vb;
+ if (vbuf->vb2_buf.index == idx)
+ break;
+ vbuf = NULL;
+ }
+ }
+
+ return vbuf;
+}
+
+int vpu_get_num_buffers(struct vpu_inst *inst, u32 type)
+{
+ struct vb2_queue *q;
+
+ if (!inst || !inst->m2m_ctx)
+ return -EINVAL;
+ if (V4L2_TYPE_IS_OUTPUT(type))
+ q = v4l2_m2m_get_src_vq(inst->m2m_ctx);
+ else
+ q = v4l2_m2m_get_dst_vq(inst->m2m_ctx);
+
+ return q->num_buffers;
+}
+
+static void vpu_m2m_device_run(void *priv)
+{
+}
+
+static void vpu_m2m_job_abort(void *priv)
+{
+ struct vpu_inst *inst = priv;
+
+ v4l2_m2m_job_finish(inst->m2m_dev, inst->m2m_ctx);
+}
+
+static const struct v4l2_m2m_ops vpu_m2m_ops = {
+ .device_run = vpu_m2m_device_run,
+ .job_abort = vpu_m2m_job_abort
+};
+
+static int vpu_vb2_queue_setup(struct vb2_queue *vq,
+ unsigned int *buf_count,
+ unsigned int *plane_count,
+ unsigned int psize[],
+ struct device *allocators[])
+{
+ struct vpu_inst *inst = vb2_get_drv_priv(vq);
+ struct vpu_format *cur_fmt;
+ int i;
+
+ cur_fmt = vpu_get_format(inst, vq->type);
+
+ if (*plane_count) {
+ if (*plane_count != cur_fmt->num_planes)
+ return -EINVAL;
+ for (i = 0; i < cur_fmt->num_planes; i++) {
+ if (psize[i] < cur_fmt->sizeimage[i])
+ return -EINVAL;
+ }
+ }
+
+ *plane_count = cur_fmt->num_planes;
+ for (i = 0; i < cur_fmt->num_planes; i++)
+ psize[i] = cur_fmt->sizeimage[i];
+
+ inst_dbg(inst, LVL_FLOW, "%s queue setup : %u; %u, %u\n",
+ vpu_type_name(vq->type),
+ *buf_count,
+ psize[0], psize[1]);
+
+ return 0;
+}
+
+static int vpu_vb2_buf_init(struct vb2_buffer *vb)
+{
+ struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
+ struct vpu_vb2_buffer *vpu_buf = to_vpu_vb2_buffer(vbuf);
+
+ vpu_buf->state = VPU_BUF_STATE_IDLE;
+
+ return 0;
+}
+
+static void vpu_vb2_buf_cleanup(struct vb2_buffer *vb)
+{
+}
+
+static int vpu_vb2_buf_prepare(struct vb2_buffer *vb)
+{
+ struct vpu_inst *inst = vb2_get_drv_priv(vb->vb2_queue);
+ struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
+ struct vpu_vb2_buffer *vpu_buf = to_vpu_vb2_buffer(vbuf);
+ struct vpu_format *cur_fmt;
+ u32 i;
+
+ cur_fmt = vpu_get_format(inst, vb->type);
+ if (vb->num_planes != cur_fmt->num_planes)
+ return -EINVAL;
+ for (i = 0; i < cur_fmt->num_planes; i++) {
+ if (vpu_get_vb_length(vb, i) < cur_fmt->sizeimage[i]) {
+ inst_err(inst, "%s buf[%d] is invalid\n",
+ vpu_type_name(vb->type),
+ vb->index);
+ vpu_buf->state = VPU_BUF_STATE_ERROR;
+ }
+ }
+
+ return 0;
+}
+
+static void vpu_vb2_buf_finish(struct vb2_buffer *vb)
+{
+ struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
+ struct vpu_inst *inst = vb2_get_drv_priv(vb->vb2_queue);
+ struct vb2_queue *q = vb->vb2_queue;
+
+ if (vbuf->flags & V4L2_BUF_FLAG_LAST)
+ vpu_notify_eos(inst);
+
+ if (list_empty(&q->done_list))
+ call_vop(inst, on_queue_empty, q->type);
+}
+
+void vpu_vb2_buffers_return(struct vpu_inst *inst,
+ unsigned int type, enum vb2_buffer_state state)
+{
+ struct vb2_v4l2_buffer *buf;
+
+ if (!inst || !inst->m2m_ctx)
+ return;
+
+ if (V4L2_TYPE_IS_OUTPUT(type)) {
+ while ((buf = v4l2_m2m_src_buf_remove(inst->m2m_ctx)))
+ v4l2_m2m_buf_done(buf, state);
+ } else {
+ while ((buf = v4l2_m2m_dst_buf_remove(inst->m2m_ctx)))
+ v4l2_m2m_buf_done(buf, state);
+ }
+}
+
+static int vpu_vb2_start_streaming(struct vb2_queue *q, unsigned int count)
+{
+ struct vpu_inst *inst = vb2_get_drv_priv(q);
+ int ret;
+
+ vpu_inst_unlock(inst);
+ ret = vpu_inst_register(inst);
+ vpu_inst_lock(inst);
+ if (ret)
+ return ret;
+
+ vpu_inst_get(inst);
+ inst_dbg(inst, LVL_FLOW, "%s start streaming : %d\n",
+ vpu_type_name(q->type), q->num_buffers);
+ call_vop(inst, start, q->type);
+ vb2_clear_last_buffer_dequeued(q);
+
+ return 0;
+}
+
+static void vpu_vb2_stop_streaming(struct vb2_queue *q)
+{
+ struct vpu_inst *inst = vb2_get_drv_priv(q);
+
+ inst_dbg(inst, LVL_FLOW, "%s stop streaming\n", vpu_type_name(q->type));
+
+ call_vop(inst, stop, q->type);
+ vpu_vb2_buffers_return(inst, q->type, VB2_BUF_STATE_ERROR);
+ if (V4L2_TYPE_IS_OUTPUT(q->type))
+ inst->sequence = 0;
+
+ vpu_inst_put(inst);
+}
+
+static void vpu_vb2_buf_queue(struct vb2_buffer *vb)
+{
+ struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
+ struct vpu_inst *inst = vb2_get_drv_priv(vb->vb2_queue);
+
+ inst_dbg(inst, LVL_DEBUG, "%s buf queue\n", vpu_type_name(vb->type));
+
+ if (V4L2_TYPE_IS_OUTPUT(vb->type)) {
+ vbuf->sequence = inst->sequence++;
+ if ((s64)vb->timestamp < 0)
+ vb->timestamp = VPU_INVALID_TIMESTAMP;
+ }
+
+ v4l2_m2m_buf_queue(inst->m2m_ctx, vbuf);
+ vpu_process_output_buffer(inst);
+ vpu_process_capture_buffer(inst);
+}
+
+static struct vb2_ops vpu_vb2_ops = {
+ .queue_setup = vpu_vb2_queue_setup,
+ .buf_init = vpu_vb2_buf_init,
+ .buf_cleanup = vpu_vb2_buf_cleanup,
+ .buf_prepare = vpu_vb2_buf_prepare,
+ .buf_finish = vpu_vb2_buf_finish,
+ .start_streaming = vpu_vb2_start_streaming,
+ .stop_streaming = vpu_vb2_stop_streaming,
+ .buf_queue = vpu_vb2_buf_queue,
+ .wait_prepare = vb2_ops_wait_prepare,
+ .wait_finish = vb2_ops_wait_finish,
+};
+
+static int vpu_m2m_queue_init(void *priv, struct vb2_queue *src_vq,
+ struct vb2_queue *dst_vq)
+{
+ struct vpu_inst *inst = priv;
+ int ret;
+
+ src_vq->type = V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE;
+ src_vq->io_modes = VB2_MMAP | VB2_USERPTR | VB2_DMABUF;
+ src_vq->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_COPY;
+ src_vq->ops = &vpu_vb2_ops;
+ src_vq->mem_ops = &vb2_dma_contig_memops;
+ if (inst->type == VPU_CORE_TYPE_DEC && inst->use_stream_buffer)
+ src_vq->mem_ops = &vb2_vmalloc_memops;
+ src_vq->drv_priv = inst;
+ src_vq->buf_struct_size = sizeof(struct vpu_vb2_buffer);
+ src_vq->allow_zero_bytesused = 1;
+ src_vq->min_buffers_needed = 1;
+ src_vq->dev = inst->core->dev;
+ src_vq->lock = &inst->lock;
+ ret = vb2_queue_init(src_vq);
+ if (ret)
+ return ret;
+
+ dst_vq->type = V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE;
+ dst_vq->io_modes = VB2_MMAP | VB2_USERPTR | VB2_DMABUF;
+ dst_vq->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_COPY;
+ dst_vq->ops = &vpu_vb2_ops;
+ dst_vq->mem_ops = &vb2_dma_contig_memops;
+ if (inst->type == VPU_CORE_TYPE_ENC && inst->use_stream_buffer)
+ dst_vq->mem_ops = &vb2_vmalloc_memops;
+ dst_vq->drv_priv = inst;
+ dst_vq->buf_struct_size = sizeof(struct vpu_vb2_buffer);
+ dst_vq->allow_zero_bytesused = 1;
+ dst_vq->min_buffers_needed = 1;
+ dst_vq->dev = inst->core->dev;
+ dst_vq->lock = &inst->lock;
+ ret = vb2_queue_init(dst_vq);
+ if (ret) {
+ vb2_queue_release(src_vq);
+ return ret;
+ }
+
+ return 0;
+}
+
+static int vpu_v4l2_release(struct vpu_inst *inst)
+{
+ struct vpu_core *core = inst->core;
+
+ inst_dbg(inst, LVL_FLOW, "%s\n", __func__);
+
+ vpu_release_core(core);
+
+ if (inst->workqueue) {
+ cancel_work_sync(&inst->msg_work);
+ destroy_workqueue(inst->workqueue);
+ inst->workqueue = NULL;
+ }
+ if (inst->m2m_ctx) {
+ v4l2_m2m_ctx_release(inst->m2m_ctx);
+ inst->m2m_ctx = NULL;
+ }
+ if (inst->m2m_dev) {
+ v4l2_m2m_release(inst->m2m_dev);
+ inst->m2m_dev = NULL;
+ }
+
+ v4l2_ctrl_handler_free(&inst->ctrl_handler);
+ mutex_destroy(&inst->lock);
+ v4l2_fh_del(&inst->fh);
+ v4l2_fh_exit(&inst->fh);
+
+ call_vop(inst, cleanup);
+
+ return 0;
+}
+
+int vpu_v4l2_open(struct file *file, struct vpu_inst *inst)
+{
+ struct vpu_dev *vpu = video_drvdata(file);
+ struct video_device *vdev;
+ struct vpu_core *core = NULL;
+ int ret = 0;
+
+ WARN_ON(!file || !inst || !inst->ops);
+
+ if (inst->type == VPU_CORE_TYPE_ENC)
+ vdev = vpu->vdev_enc;
+ else
+ vdev = vpu->vdev_dec;
+
+ mutex_init(&inst->lock);
+ INIT_LIST_HEAD(&inst->cmd_q);
+
+ inst->id = VPU_INST_NULL_ID;
+ inst->release = vpu_v4l2_release;
+ inst->core = vpu_request_core(vpu, inst->type);
+ inst->pid = current->pid;
+ inst->tgid = current->tgid;
+
+ core = inst->core;
+ if (!core) {
+ vpu_err("there is no core for %s\n",
+ vpu_core_type_desc(inst->type));
+ return -EINVAL;
+ }
+
+ inst->min_buffer_cap = 2;
+ inst->min_buffer_out = 2;
+
+ ret = call_vop(inst, ctrl_init);
+ if (ret)
+ goto error;
+
+ inst->m2m_dev = v4l2_m2m_init(&vpu_m2m_ops);
+ if (IS_ERR(inst->m2m_dev)) {
+ vpu_err("v4l2_m2m_init fail\n");
+ ret = PTR_ERR(inst->m2m_dev);
+ goto error;
+ }
+
+ inst->m2m_ctx = v4l2_m2m_ctx_init(inst->m2m_dev,
+ inst, vpu_m2m_queue_init);
+ if (IS_ERR(inst->m2m_ctx)) {
+ vpu_err("v4l2_m2m_ctx_init fail\n");
+ ret = PTR_ERR(inst->m2m_dev);
+ goto error;
+ }
+
+ v4l2_fh_init(&inst->fh, vdev);
+ v4l2_fh_add(&inst->fh);
+ inst->fh.ctrl_handler = &inst->ctrl_handler;
+ inst->fh.m2m_ctx = inst->m2m_ctx;
+ file->private_data = &inst->fh;
+ inst->state = VPU_CODEC_STATE_DEINIT;
+ inst->workqueue = alloc_workqueue("vpu_inst", WQ_UNBOUND | WQ_MEM_RECLAIM, 1);
+ if (inst->workqueue) {
+ INIT_WORK(&inst->msg_work, vpu_inst_run_work);
+ ret = kfifo_init(&inst->msg_fifo,
+ inst->msg_buffer,
+ roundup_pow_of_two(sizeof(inst->msg_buffer)));
+ if (ret) {
+ destroy_workqueue(inst->workqueue);
+ inst->workqueue = NULL;
+ }
+ }
+ atomic_set(&inst->ref_count, 0);
+ vpu_inst_get(inst);
+ vpu_dbg(LVL_FLOW, "open, tgid = %d, pid = %d\n", inst->tgid, inst->pid);
+
+ return 0;
+error:
+ if (inst->m2m_ctx) {
+ v4l2_m2m_ctx_release(inst->m2m_ctx);
+ inst->m2m_ctx = NULL;
+ }
+ if (inst->m2m_dev) {
+ v4l2_m2m_release(inst->m2m_dev);
+ inst->m2m_dev = NULL;
+ }
+ v4l2_ctrl_handler_free(&inst->ctrl_handler);
+ vpu_release_core(inst->core);
+
+ return ret;
+}
+
+int vpu_v4l2_close(struct file *file)
+{
+ struct vpu_inst *inst = to_inst(file);
+ struct vb2_queue *src_q;
+ struct vb2_queue *dst_q;
+
+ inst_dbg(inst, LVL_FLOW, "close\n");
+ src_q = v4l2_m2m_get_src_vq(inst->m2m_ctx);
+ dst_q = v4l2_m2m_get_dst_vq(inst->m2m_ctx);
+ vpu_inst_lock(inst);
+ if (vb2_is_streaming(src_q))
+ v4l2_m2m_streamoff(file, inst->m2m_ctx, src_q->type);
+ if (vb2_is_streaming(dst_q))
+ v4l2_m2m_streamoff(file, inst->m2m_ctx, dst_q->type);
+ vpu_inst_unlock(inst);
+
+ call_vop(inst, release);
+ vpu_inst_unregister(inst);
+ vpu_inst_put(inst);
+
+ return 0;
+}
diff --git a/drivers/media/platform/amphion/vpu_v4l2.h b/drivers/media/platform/amphion/vpu_v4l2.h
new file mode 100644
index 000000000000..8873e1f66072
--- /dev/null
+++ b/drivers/media/platform/amphion/vpu_v4l2.h
@@ -0,0 +1,53 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * Copyright 2020-2021 NXP
+ */
+
+#ifndef _AMPHION_VPU_V4L2_H
+#define _AMPHION_VPU_V4L2_H
+
+#include <linux/videodev2.h>
+
+void vpu_inst_lock(struct vpu_inst *inst);
+void vpu_inst_unlock(struct vpu_inst *inst);
+
+int vpu_v4l2_open(struct file *file, struct vpu_inst *inst);
+int vpu_v4l2_close(struct file *file);
+
+const struct vpu_format *vpu_try_fmt_common(struct vpu_inst *inst, struct v4l2_format *f);
+int vpu_process_output_buffer(struct vpu_inst *inst);
+int vpu_process_capture_buffer(struct vpu_inst *inst);
+struct vb2_v4l2_buffer *vpu_find_buf_by_sequence(struct vpu_inst *inst, u32 type, u32 sequence);
+struct vb2_v4l2_buffer *vpu_find_buf_by_idx(struct vpu_inst *inst, u32 type, u32 idx);
+void vpu_v4l2_set_error(struct vpu_inst *inst);
+int vpu_notify_eos(struct vpu_inst *inst);
+int vpu_notify_source_change(struct vpu_inst *inst);
+void vpu_vb2_buffers_return(struct vpu_inst *inst,
+ unsigned int type, enum vb2_buffer_state state);
+int vpu_get_num_buffers(struct vpu_inst *inst, u32 type);
+
+dma_addr_t vpu_get_vb_phy_addr(struct vb2_buffer *vb, u32 plane_no);
+unsigned int vpu_get_vb_length(struct vb2_buffer *vb, u32 plane_no);
+static inline struct vpu_format *vpu_get_format(struct vpu_inst *inst, u32 type)
+{
+ if (V4L2_TYPE_IS_OUTPUT(type))
+ return &inst->out_format;
+ else
+ return &inst->cap_format;
+}
+
+static inline char *vpu_type_name(u32 type)
+{
+ return V4L2_TYPE_IS_OUTPUT(type) ? "output" : "capture";
+}
+
+static inline int vpu_vb_is_codecconfig(struct vb2_v4l2_buffer *vbuf)
+{
+#ifdef V4L2_BUF_FLAG_CODECCONFIG
+ return (vbuf->flags & V4L2_BUF_FLAG_CODECCONFIG) ? 1 : 0;
+#else
+ return 0;
+#endif
+}
+
+#endif
--
2.32.0