On 11/19/2018 04:29 PM, Ezequiel Garcia wrote:
> Add a mem2mem driver for the VPU available on Rockchip SoCs.
> Currently only JPEG encoding is supported, for RK3399 and RK3288
> platforms.
>
> Signed-off-by: Ezequiel Garcia <ezequiel@xxxxxxxxxxxxx>
> ---
> MAINTAINERS | 7 +
> drivers/staging/media/Kconfig | 2 +
> drivers/staging/media/Makefile | 1 +
> drivers/staging/media/rockchip/vpu/Kconfig | 14 +
> drivers/staging/media/rockchip/vpu/Makefile | 10 +
> drivers/staging/media/rockchip/vpu/TODO | 9 +
> .../media/rockchip/vpu/rk3288_vpu_hw.c | 118 +++
> .../rockchip/vpu/rk3288_vpu_hw_jpeg_enc.c | 133 ++++
> .../media/rockchip/vpu/rk3288_vpu_regs.h | 442 +++++++++++
> .../media/rockchip/vpu/rk3399_vpu_hw.c | 118 +++
> .../rockchip/vpu/rk3399_vpu_hw_jpeg_enc.c | 160 ++++
> .../media/rockchip/vpu/rk3399_vpu_regs.h | 600 +++++++++++++++
> .../staging/media/rockchip/vpu/rockchip_vpu.h | 237 ++++++
> .../media/rockchip/vpu/rockchip_vpu_common.h | 29 +
> .../media/rockchip/vpu/rockchip_vpu_drv.c | 535 +++++++++++++
> .../media/rockchip/vpu/rockchip_vpu_enc.c | 701 ++++++++++++++++++
> .../media/rockchip/vpu/rockchip_vpu_hw.h | 58 ++
> .../media/rockchip/vpu/rockchip_vpu_jpeg.c | 289 ++++++++
> .../media/rockchip/vpu/rockchip_vpu_jpeg.h | 12 +
> 19 files changed, 3475 insertions(+)
> create mode 100644 drivers/staging/media/rockchip/vpu/Kconfig
> create mode 100644 drivers/staging/media/rockchip/vpu/Makefile
> create mode 100644 drivers/staging/media/rockchip/vpu/TODO
> create mode 100644 drivers/staging/media/rockchip/vpu/rk3288_vpu_hw.c
> create mode 100644 drivers/staging/media/rockchip/vpu/rk3288_vpu_hw_jpeg_enc.c
> create mode 100644 drivers/staging/media/rockchip/vpu/rk3288_vpu_regs.h
> create mode 100644 drivers/staging/media/rockchip/vpu/rk3399_vpu_hw.c
> create mode 100644 drivers/staging/media/rockchip/vpu/rk3399_vpu_hw_jpeg_enc.c
> create mode 100644 drivers/staging/media/rockchip/vpu/rk3399_vpu_regs.h
> create mode 100644 drivers/staging/media/rockchip/vpu/rockchip_vpu.h
> create mode 100644 drivers/staging/media/rockchip/vpu/rockchip_vpu_common.h
> create mode 100644 drivers/staging/media/rockchip/vpu/rockchip_vpu_drv.c
> create mode 100644 drivers/staging/media/rockchip/vpu/rockchip_vpu_enc.c
> create mode 100644 drivers/staging/media/rockchip/vpu/rockchip_vpu_hw.h
> create mode 100644 drivers/staging/media/rockchip/vpu/rockchip_vpu_jpeg.c
> create mode 100644 drivers/staging/media/rockchip/vpu/rockchip_vpu_jpeg.h
>
> diff --git a/MAINTAINERS b/MAINTAINERS
> index a8588dedc683..e5a294453393 100644
> --- a/MAINTAINERS
> +++ b/MAINTAINERS
> @@ -12742,6 +12742,13 @@ S: Maintained
> F: drivers/media/platform/rockchip/rga/
> F: Documentation/devicetree/bindings/media/rockchip-rga.txt
>
> +ROCKCHIP VPU CODEC DRIVER
> +M: Ezequiel Garcia <ezequiel@xxxxxxxxxxxxx>
> +L: linux-media@xxxxxxxxxxxxxxx
> +S: Maintained
> +F: drivers/staging/media/platform/rockchip/vpu/
> +F: Documentation/devicetree/bindings/media/rockchip-vpu.txt
> +
> ROCKER DRIVER
> M: Jiri Pirko <jiri@xxxxxxxxxxx>
> L: netdev@xxxxxxxxxxxxxxx
> diff --git a/drivers/staging/media/Kconfig b/drivers/staging/media/Kconfig
> index b3620a8f2d9f..c6f3404dea43 100644
> --- a/drivers/staging/media/Kconfig
> +++ b/drivers/staging/media/Kconfig
> @@ -31,6 +31,8 @@ source "drivers/staging/media/mt9t031/Kconfig"
>
> source "drivers/staging/media/omap4iss/Kconfig"
>
> +source "drivers/staging/media/rockchip/vpu/Kconfig"
> +
> source "drivers/staging/media/sunxi/Kconfig"
>
> source "drivers/staging/media/tegra-vde/Kconfig"
> diff --git a/drivers/staging/media/Makefile b/drivers/staging/media/Makefile
> index 42948f805548..43c7bee1fc8c 100644
> --- a/drivers/staging/media/Makefile
> +++ b/drivers/staging/media/Makefile
> @@ -8,3 +8,4 @@ obj-$(CONFIG_VIDEO_OMAP4) += omap4iss/
> obj-$(CONFIG_VIDEO_SUNXI) += sunxi/
> obj-$(CONFIG_TEGRA_VDE) += tegra-vde/
> obj-$(CONFIG_VIDEO_ZORAN) += zoran/
> +obj-$(CONFIG_VIDEO_ROCKCHIP_VPU) += rockchip/vpu/
> diff --git a/drivers/staging/media/rockchip/vpu/Kconfig b/drivers/staging/media/rockchip/vpu/Kconfig
> new file mode 100644
> index 000000000000..fa65c03d65bf
> --- /dev/null
> +++ b/drivers/staging/media/rockchip/vpu/Kconfig
> @@ -0,0 +1,14 @@
> +config VIDEO_ROCKCHIP_VPU
> + tristate "Rockchip VPU driver"
> + depends on ARCH_ROCKCHIP || COMPILE_TEST
> + depends on VIDEO_DEV && VIDEO_V4L2 && MEDIA_CONTROLLER
> + select VIDEOBUF2_DMA_CONTIG
> + select VIDEOBUF2_VMALLOC
> + select V4L2_MEM2MEM_DEV
> + default n
> + help
> + Support for the Video Processing Unit present on Rockchip SoC,
> + which accelerates video and image encoding and decoding.
> + To compile this driver as a module, choose M here: the module
> + will be called rockchip-vpu.
> +
> diff --git a/drivers/staging/media/rockchip/vpu/Makefile b/drivers/staging/media/rockchip/vpu/Makefile
> new file mode 100644
> index 000000000000..e9d733bb7632
> --- /dev/null
> +++ b/drivers/staging/media/rockchip/vpu/Makefile
> @@ -0,0 +1,10 @@
> +obj-$(CONFIG_VIDEO_ROCKCHIP_VPU) += rockchip-vpu.o
> +
> +rockchip-vpu-y += \
> + rockchip_vpu_drv.o \
> + rockchip_vpu_enc.o \
> + rk3288_vpu_hw.o \
> + rk3288_vpu_hw_jpeg_enc.o \
> + rk3399_vpu_hw.o \
> + rk3399_vpu_hw_jpeg_enc.o \
> + rockchip_vpu_jpeg.o
> diff --git a/drivers/staging/media/rockchip/vpu/TODO b/drivers/staging/media/rockchip/vpu/TODO
> new file mode 100644
> index 000000000000..2b11ab5545e2
> --- /dev/null
> +++ b/drivers/staging/media/rockchip/vpu/TODO
> @@ -0,0 +1,9 @@
> +This driver is in staging until the V4L controls stabilize.
> +
> +Given the V4L controls are part of the uABI, it's better
> +to have the driver in staging, so users are aware of this
> +driver having an unstable interface.
> +
> +Having proper userspace support for drivers like this that
> +use JPEG_RAW and similar formats is also a requirement
> +for moving out of staging.
This TODO is now out of date: there are no new controls and no new JPEG_RAW
format.
There is in principle no reason for this driver to be in staging anymore. But
it is my understanding that it is the intention to add the Rockchip stateless
codecs to this driver as well, and those need to be in staging (at least for
now). So I gather that's the real reason why this is in staging, and that
should be documented in the TODO file.
> diff --git a/drivers/staging/media/rockchip/vpu/rk3288_vpu_hw.c b/drivers/staging/media/rockchip/vpu/rk3288_vpu_hw.c
> new file mode 100644
> index 000000000000..75b7abbd3aca
> --- /dev/null
> +++ b/drivers/staging/media/rockchip/vpu/rk3288_vpu_hw.c
> @@ -0,0 +1,118 @@
> +// SPDX-License-Identifier: GPL-2.0
> +/*
> + * Rockchip VPU codec driver
> + *
> + * Copyright (C) 2018 Rockchip Electronics Co., Ltd.
> + * Jeffy Chen <jeffy.chen@xxxxxxxxxxxxxx>
> + */
> +
> +#include <linux/clk.h>
> +
> +#include "rockchip_vpu.h"
> +#include "rockchip_vpu_jpeg.h"
> +#include "rk3288_vpu_regs.h"
> +
> +#define RK3288_ACLK_MAX_FREQ (400 * 1000 * 1000)
> +
> +/*
> + * Supported formats.
> + */
> +
> +static const struct rockchip_vpu_fmt rk3288_vpu_enc_fmts[] = {
> + {
> + .fourcc = V4L2_PIX_FMT_YUV420M,
> + .codec_mode = RK_VPU_MODE_NONE,
> + .enc_fmt = RK3288_VPU_ENC_FMT_YUV420P,
> + },
> + {
> + .fourcc = V4L2_PIX_FMT_NV12M,
> + .codec_mode = RK_VPU_MODE_NONE,
> + .enc_fmt = RK3288_VPU_ENC_FMT_YUV420SP,
> + },
> + {
> + .fourcc = V4L2_PIX_FMT_YUYV,
> + .codec_mode = RK_VPU_MODE_NONE,
> + .enc_fmt = RK3288_VPU_ENC_FMT_YUYV422,
> + },
> + {
> + .fourcc = V4L2_PIX_FMT_UYVY,
> + .codec_mode = RK_VPU_MODE_NONE,
> + .enc_fmt = RK3288_VPU_ENC_FMT_UYVY422,
> + },
> + {
> + .fourcc = V4L2_PIX_FMT_JPEG,
> + .codec_mode = RK_VPU_MODE_JPEG_ENC,
> + .max_depth = 2,
> + .header_size = JPEG_HEADER_SIZE,
> + .frmsize = {
> + .min_width = 96,
> + .max_width = 8192,
> + .step_width = MB_DIM,
> + .min_height = 32,
> + .max_height = 8192,
> + .step_height = MB_DIM,
The hardware has no support for padding the image up to the next MB_DIM
alignment? Just curious. If that's the case, then I suggest adding a
comment here. If not, then perhaps adding support for this should be
added to do TODO file?
> + },
> + },
> +};
> +
> +static irqreturn_t rk3288_vepu_irq(int irq, void *dev_id)
> +{
> + struct rockchip_vpu_dev *vpu = dev_id;
> + enum vb2_buffer_state state;
> + u32 status, bytesused;
> +
> + status = vepu_read(vpu, VEPU_REG_INTERRUPT);
> + bytesused = vepu_read(vpu, VEPU_REG_STR_BUF_LIMIT) / 8;
> + state = (status & VEPU_REG_INTERRUPT_FRAME_RDY) ?
> + VB2_BUF_STATE_DONE : VB2_BUF_STATE_ERROR;
> +
> + vepu_write(vpu, 0, VEPU_REG_INTERRUPT);
> + vepu_write(vpu, 0, VEPU_REG_AXI_CTRL);
> +
> + rockchip_vpu_irq_done(vpu, bytesused, state);
> +
> + return IRQ_HANDLED;
> +}
> +
> +static int rk3288_vpu_hw_init(struct rockchip_vpu_dev *vpu)
> +{
> + /* Bump ACLK to max. possible freq. to improve performance. */
> + clk_set_rate(vpu->clocks[0].clk, RK3288_ACLK_MAX_FREQ);
> + return 0;
> +}
> +
> +static void rk3288_vpu_enc_reset(struct rockchip_vpu_ctx *ctx)
> +{
> + struct rockchip_vpu_dev *vpu = ctx->dev;
> +
> + vepu_write(vpu, VEPU_REG_INTERRUPT_DIS_BIT, VEPU_REG_INTERRUPT);
> + vepu_write(vpu, 0, VEPU_REG_ENC_CTRL);
> + vepu_write(vpu, 0, VEPU_REG_AXI_CTRL);
> +}
> +
> +/*
> + * Supported codec ops.
> + */
> +
> +static const struct rockchip_vpu_codec_ops rk3288_vpu_codec_ops[] = {
> + [RK_VPU_MODE_JPEG_ENC] = {
> + .run = rk3288_vpu_jpeg_enc_run,
> + .reset = rk3288_vpu_enc_reset,
> + },
> +};
> +
> +/*
> + * VPU variant.
> + */
> +
> +const struct rockchip_vpu_variant rk3288_vpu_variant = {
> + .enc_offset = 0x0,
> + .enc_fmts = rk3288_vpu_enc_fmts,
> + .num_enc_fmts = ARRAY_SIZE(rk3288_vpu_enc_fmts),
> + .codec_ops = rk3288_vpu_codec_ops,
> + .codec = RK_VPU_CODEC_JPEG,
> + .vepu_irq = rk3288_vepu_irq,
> + .init = rk3288_vpu_hw_init,
> + .clk_names = {"aclk", "hclk"},
> + .num_clocks = 2
> +};
<snip>
> diff --git a/drivers/staging/media/rockchip/vpu/rockchip_vpu_drv.c b/drivers/staging/media/rockchip/vpu/rockchip_vpu_drv.c
> new file mode 100644
> index 000000000000..a355ccb678e8
> --- /dev/null
> +++ b/drivers/staging/media/rockchip/vpu/rockchip_vpu_drv.c
> @@ -0,0 +1,535 @@
> +// SPDX-License-Identifier: GPL-2.0
> +/*
> + * Rockchip VPU codec driver
> + *
> + * Copyright (C) 2018 Collabora, Ltd.
> + * Copyright (C) 2014 Google, Inc.
> + * Tomasz Figa <tfiga@xxxxxxxxxxxx>
> + *
> + * Based on s5p-mfc driver by Samsung Electronics Co., Ltd.
> + * Copyright (C) 2011 Samsung Electronics Co., Ltd.
> + */
> +
> +#include <linux/clk.h>
> +#include <linux/module.h>
> +#include <linux/of.h>
> +#include <linux/platform_device.h>
> +#include <linux/pm.h>
> +#include <linux/pm_runtime.h>
> +#include <linux/slab.h>
> +#include <linux/videodev2.h>
> +#include <linux/workqueue.h>
> +#include <media/v4l2-event.h>
> +#include <media/v4l2-mem2mem.h>
> +#include <media/videobuf2-core.h>
> +#include <media/videobuf2-core.h>
> +#include <media/videobuf2-vmalloc.h>
> +
> +#include "rockchip_vpu_common.h"
> +#include "rockchip_vpu.h"
> +#include "rockchip_vpu_hw.h"
> +
> +#define DRIVER_NAME "rockchip-vpu"
> +
> +int rockchip_vpu_debug;
> +module_param_named(debug, rockchip_vpu_debug, int, 0644);
> +MODULE_PARM_DESC(debug,
> + "Debug level - higher value produces more verbose messages");
> +
> +static void rockchip_vpu_job_finish(struct rockchip_vpu_dev *vpu,
> + struct rockchip_vpu_ctx *ctx,
> + unsigned int bytesused,
> + enum vb2_buffer_state result)
> +{
> + struct vb2_v4l2_buffer *src, *dst;
> +
> + pm_runtime_mark_last_busy(vpu->dev);
> + pm_runtime_put_autosuspend(vpu->dev);
> +
> + src = v4l2_m2m_src_buf_remove(ctx->fh.m2m_ctx);
> + dst = v4l2_m2m_dst_buf_remove(ctx->fh.m2m_ctx);
> +
> + if (WARN_ON(!src))
> + return;
> + if (WARN_ON(!dst))
> + return;
> +
> + src->sequence = ctx->sequence_out++;
> + dst->sequence = ctx->sequence_cap++;
> +
> + dst->field = src->field;
> + dst->timecode = src->timecode;
> + dst->vb2_buf.timestamp = src->vb2_buf.timestamp;
> + dst->flags &= ~V4L2_BUF_FLAG_TSTAMP_SRC_MASK;
> + dst->flags |= src->flags & V4L2_BUF_FLAG_TSTAMP_SRC_MASK;
> +
> + if (bytesused) {
> + if (ctx->bounce_buf) {
> + memcpy(vb2_plane_vaddr(&dst->vb2_buf, 0) +
> + ctx->vpu_dst_fmt->header_size,
> + ctx->bounce_buf, bytesused);
> + }
> + dst->vb2_buf.planes[0].bytesused =
> + ctx->vpu_dst_fmt->header_size + bytesused;
> + }
> +
> + v4l2_m2m_buf_done(src, result);
> + v4l2_m2m_buf_done(dst, result);
> +
> + v4l2_m2m_job_finish(vpu->m2m_dev, ctx->fh.m2m_ctx);
> +}
> +
> +void rockchip_vpu_irq_done(struct rockchip_vpu_dev *vpu,
> + unsigned int bytesused,
> + enum vb2_buffer_state result)
> +{
> + struct rockchip_vpu_ctx *ctx =
> + (struct rockchip_vpu_ctx *)v4l2_m2m_get_curr_priv(vpu->m2m_dev);
> +
> + /* Atomic watchdog cancel. The worker may still be
> + * running after calling this.
> + */
> + cancel_delayed_work(&vpu->watchdog_work);
> + if (ctx)
> + rockchip_vpu_job_finish(vpu, ctx, bytesused, result);
> +}
> +
> +void rockchip_vpu_watchdog(struct work_struct *work)
> +{
> + struct rockchip_vpu_dev *vpu;
> + struct rockchip_vpu_ctx *ctx;
> +
> + vpu = container_of(to_delayed_work(work),
> + struct rockchip_vpu_dev, watchdog_work);
> + ctx = (struct rockchip_vpu_ctx *)v4l2_m2m_get_curr_priv(vpu->m2m_dev);
> + if (ctx) {
> + vpu_err("frame processing timed out!\n");
> + ctx->codec_ops->reset(ctx);
> + rockchip_vpu_job_finish(vpu, ctx, 0, VB2_BUF_STATE_ERROR);
> + }
> +}
> +
> +static void device_run(void *priv)
> +{
> + struct rockchip_vpu_ctx *ctx = priv;
> +
> + pm_runtime_get_sync(ctx->dev->dev);
> +
> + ctx->codec_ops->run(ctx);
> +}
> +
> +static struct v4l2_m2m_ops vpu_m2m_ops = {
> + .device_run = device_run,
> +};
> +
> +static int
> +enc_queue_init(void *priv, struct vb2_queue *src_vq, struct vb2_queue *dst_vq)
> +{
> + struct rockchip_vpu_ctx *ctx = priv;
> + int ret;
> +
> + src_vq->type = V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE;
> + src_vq->io_modes = VB2_MMAP | VB2_DMABUF;
> + src_vq->drv_priv = ctx;
> + src_vq->ops = &rockchip_vpu_enc_queue_ops;
> + src_vq->mem_ops = &vb2_dma_contig_memops;
> + src_vq->dma_attrs = DMA_ATTR_ALLOC_SINGLE_PAGES |
> + DMA_ATTR_NO_KERNEL_MAPPING;
> + src_vq->buf_struct_size = sizeof(struct v4l2_m2m_buffer);
> + src_vq->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_COPY;
> + src_vq->lock = &ctx->dev->vpu_mutex;
> + src_vq->dev = ctx->dev->v4l2_dev.dev;
> +
> + ret = vb2_queue_init(src_vq);
> + if (ret)
> + return ret;
> +
> + /* The CAPTURE queue doesn't need dma memory,
> + * as the CPU needs to create the JPEG frames,
> + * from the hardware-produced JPEG payload.
> + *
> + * For the DMA destination buffer, we use
> + * a bounce buffer.
> + */
> + dst_vq->type = V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE;
> + dst_vq->io_modes = VB2_MMAP | VB2_DMABUF;
> + dst_vq->drv_priv = ctx;
> + dst_vq->ops = &rockchip_vpu_enc_queue_ops;
> + dst_vq->mem_ops = &vb2_vmalloc_memops;
> + dst_vq->buf_struct_size = sizeof(struct v4l2_m2m_buffer);
> + dst_vq->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_COPY;
> + dst_vq->lock = &ctx->dev->vpu_mutex;
> + dst_vq->dev = ctx->dev->v4l2_dev.dev;
> +
> + return vb2_queue_init(dst_vq);
> +}
> +
> +static int rockchip_vpu_s_ctrl(struct v4l2_ctrl *ctrl)
> +{
> + struct rockchip_vpu_ctx *ctx;
> +
> + ctx = container_of(ctrl->handler,
> + struct rockchip_vpu_ctx, ctrl_handler);
> +
> + vpu_debug(1, "s_ctrl: id = %d, val = %d\n", ctrl->id, ctrl->val);
> +
> + switch (ctrl->id) {
> + case V4L2_CID_JPEG_COMPRESSION_QUALITY:
> + ctx->jpeg_quality = ctrl->val;
> + break;
> + default:
> + vpu_err("Invalid control id = %d, val = %d\n",
> + ctrl->id, ctrl->val);
> + return -EINVAL;
> + }
> +
> + return 0;
> +}
> +
> +static const struct v4l2_ctrl_ops rockchip_vpu_ctrl_ops = {
> + .s_ctrl = rockchip_vpu_s_ctrl,
> +};
> +
> +static int rockchip_vpu_ctrls_setup(struct rockchip_vpu_dev *vpu,
> + struct rockchip_vpu_ctx *ctx)
> +{
> + v4l2_ctrl_handler_init(&ctx->ctrl_handler, 1);
> + if (ctx->ctrl_handler.error) {
> + vpu_err("v4l2_ctrl_handler_init failed (%d)\n",
> + ctx->ctrl_handler.error);
> + return ctx->ctrl_handler.error;
> + }
> +
> + if (vpu->variant->codec & RK_VPU_CODEC_JPEG) {
> + v4l2_ctrl_new_std(&ctx->ctrl_handler, &rockchip_vpu_ctrl_ops,
> + V4L2_CID_JPEG_COMPRESSION_QUALITY,
> + 5, 100, 1, 50);
> + if (ctx->ctrl_handler.error) {
> + vpu_err("Adding JPEG control failed %d\n",
> + ctx->ctrl_handler.error);
> + v4l2_ctrl_handler_free(&ctx->ctrl_handler);
> + return ctx->ctrl_handler.error;
> + }
> + }
> +
> + return v4l2_ctrl_handler_setup(&ctx->ctrl_handler);
> +}
> +
> +/*
> + * V4L2 file operations.
> + */
> +
> +static int rockchip_vpu_open(struct file *filp)
> +{
> + struct rockchip_vpu_dev *vpu = video_drvdata(filp);
> + struct video_device *vdev = video_devdata(filp);
> + struct rockchip_vpu_ctx *ctx;
> + int ret;
> +
> + /*
> + * We do not need any extra locking here, because we operate only
> + * on local data here, except reading few fields from dev, which
> + * do not change through device's lifetime (which is guaranteed by
> + * reference on module from open()) and V4L2 internal objects (such
> + * as vdev and ctx->fh), which have proper locking done in respective
> + * helper functions used here.
> + */
> +
> + ctx = kzalloc(sizeof(*ctx), GFP_KERNEL);
> + if (!ctx)
> + return -ENOMEM;
> +
> + ctx->dev = vpu;
> + if (vdev == vpu->vfd_enc)
> + ctx->fh.m2m_ctx = v4l2_m2m_ctx_init(vpu->m2m_dev, ctx,
> + &enc_queue_init);
> + else
> + ctx->fh.m2m_ctx = ERR_PTR(-ENODEV);
> + if (IS_ERR(ctx->fh.m2m_ctx)) {
> + ret = PTR_ERR(ctx->fh.m2m_ctx);
> + kfree(ctx);
> + return ret;
> + }
> +
> + v4l2_fh_init(&ctx->fh, vdev);
> + filp->private_data = &ctx->fh;
> + v4l2_fh_add(&ctx->fh);
> +
> + if (vdev == vpu->vfd_enc) {
> + rockchip_vpu_enc_reset_dst_fmt(vpu, ctx);
> + rockchip_vpu_enc_reset_src_fmt(vpu, ctx);
> + }
> +
> + ret = rockchip_vpu_ctrls_setup(vpu, ctx);
> + if (ret) {
> + vpu_err("Failed to set up controls\n");
> + goto err_fh_free;
> + }
> + ctx->fh.ctrl_handler = &ctx->ctrl_handler;
> +
> + return 0;
> +
> +err_fh_free:
> + v4l2_fh_del(&ctx->fh);
> + v4l2_fh_exit(&ctx->fh);
> + kfree(ctx);
> + return ret;
> +}
> +
> +static int rockchip_vpu_release(struct file *filp)
> +{
> + struct rockchip_vpu_ctx *ctx =
> + container_of(filp->private_data, struct rockchip_vpu_ctx, fh);
> +
> + /*
> + * No need for extra locking because this was the last reference
> + * to this file.
> + */
> + v4l2_m2m_ctx_release(ctx->fh.m2m_ctx);
> + v4l2_fh_del(&ctx->fh);
> + v4l2_fh_exit(&ctx->fh);
> + v4l2_ctrl_handler_free(&ctx->ctrl_handler);
> + kfree(ctx);
> +
> + return 0;
> +}
> +
> +static const struct v4l2_file_operations rockchip_vpu_fops = {
> + .owner = THIS_MODULE,
If I am not mistaken, then setting owner is no longer necessary.
> + .open = rockchip_vpu_open,
> + .release = rockchip_vpu_release,
> + .poll = v4l2_m2m_fop_poll,
> + .unlocked_ioctl = video_ioctl2,
> + .mmap = v4l2_m2m_fop_mmap,
> +};
> +
> +static const struct of_device_id of_rockchip_vpu_match[] = {
> + { .compatible = "rockchip,rk3399-vpu", .data = &rk3399_vpu_variant, },
> + { .compatible = "rockchip,rk3288-vpu", .data = &rk3288_vpu_variant, },
> + { /* sentinel */ }
> +};
> +MODULE_DEVICE_TABLE(of, of_rockchip_vpu_match);
> +
> +static int rockchip_vpu_video_device_register(struct rockchip_vpu_dev *vpu)
> +{
> + const struct of_device_id *match;
> + struct video_device *vfd;
> + int function, ret;
> +
> + match = of_match_node(of_rockchip_vpu_match, vpu->dev->of_node);
> + vfd = video_device_alloc();
> + if (!vfd) {
> + v4l2_err(&vpu->v4l2_dev, "Failed to allocate video device\n");
> + return -ENOMEM;
> + }
> +
> + vfd->fops = &rockchip_vpu_fops;
> + vfd->release = video_device_release;
> + vfd->lock = &vpu->vpu_mutex;
> + vfd->v4l2_dev = &vpu->v4l2_dev;
> + vfd->vfl_dir = VFL_DIR_M2M;
> + vfd->device_caps = V4L2_CAP_STREAMING | V4L2_CAP_VIDEO_M2M_MPLANE;
> + vfd->ioctl_ops = &rockchip_vpu_enc_ioctl_ops;
> + snprintf(vfd->name, sizeof(vfd->name), "%s-enc", match->compatible);
> + vpu->vfd_enc = vfd;
> + video_set_drvdata(vfd, vpu);
> +
> + ret = video_register_device(vfd, VFL_TYPE_GRABBER, 0);
> + if (ret) {
> + v4l2_err(&vpu->v4l2_dev, "Failed to register video device\n");
> + goto err_free_dev;
> + }
> + v4l2_info(&vpu->v4l2_dev, "registered as /dev/video%d\n", vfd->num);
> +
> + function = MEDIA_ENT_F_PROC_VIDEO_ENCODER;
> + ret = v4l2_m2m_register_media_controller(vpu->m2m_dev, vfd, function);
> + if (ret) {
> + v4l2_err(&vpu->v4l2_dev, "Failed to init mem2mem media controller\n");
> + goto err_unreg_video;
> + }
> + return 0;
> +
> +err_unreg_video:
> + video_unregister_device(vfd);
> +err_free_dev:
> + video_device_release(vfd);
> + return ret;
> +}
> +
> +static int rockchip_vpu_probe(struct platform_device *pdev)
> +{
> + const struct of_device_id *match;
> + struct rockchip_vpu_dev *vpu;
> + struct resource *res;
> + int i, ret;
> +
> + vpu = devm_kzalloc(&pdev->dev, sizeof(*vpu), GFP_KERNEL);
> + if (!vpu)
> + return -ENOMEM;
> +
> + vpu->dev = &pdev->dev;
> + vpu->pdev = pdev;
> + mutex_init(&vpu->vpu_mutex);
> + spin_lock_init(&vpu->irqlock);
> +
> + match = of_match_node(of_rockchip_vpu_match, pdev->dev.of_node);
> + vpu->variant = match->data;
> +
> + INIT_DELAYED_WORK(&vpu->watchdog_work, rockchip_vpu_watchdog);
> +
> + for (i = 0; i < vpu->variant->num_clocks; i++)
> + vpu->clocks[i].id = vpu->variant->clk_names[i];
> + ret = devm_clk_bulk_get(&pdev->dev, vpu->variant->num_clocks,
> + vpu->clocks);
> + if (ret)
> + return ret;
> +
> + res = platform_get_resource(vpu->pdev, IORESOURCE_MEM, 0);
> + vpu->base = devm_ioremap_resource(vpu->dev, res);
> + if (IS_ERR(vpu->base))
> + return PTR_ERR(vpu->base);
> + vpu->enc_base = vpu->base + vpu->variant->enc_offset;
> +
> + ret = dma_set_coherent_mask(vpu->dev, DMA_BIT_MASK(32));
> + if (ret) {
> + dev_err(vpu->dev, "Could not set DMA coherent mask.\n");
> + return ret;
> + }
> +
> + if (vpu->variant->vepu_irq) {
> + int irq;
> +
> + irq = platform_get_irq_byname(vpu->pdev, "vepu");
> + if (irq <= 0) {
> + dev_err(vpu->dev, "Could not get vepu IRQ.\n");
> + return -ENXIO;
> + }
> +
> + ret = devm_request_irq(vpu->dev, irq, vpu->variant->vepu_irq,
> + 0, dev_name(vpu->dev), vpu);
> + if (ret) {
> + dev_err(vpu->dev, "Could not request vepu IRQ.\n");
> + return ret;
> + }
> + }
> +
> + ret = vpu->variant->init(vpu);
> + if (ret) {
> + dev_err(&pdev->dev, "Failed to init VPU hardware\n");
> + return ret;
> + }
> +
> + pm_runtime_set_autosuspend_delay(vpu->dev, 100);
> + pm_runtime_use_autosuspend(vpu->dev);
> + pm_runtime_enable(vpu->dev);
> +
> + ret = clk_bulk_prepare(vpu->variant->num_clocks, vpu->clocks);
> + if (ret) {
> + dev_err(&pdev->dev, "Failed to prepare clocks\n");
> + return ret;
> + }
> +
> + ret = v4l2_device_register(&pdev->dev, &vpu->v4l2_dev);
> + if (ret) {
> + dev_err(&pdev->dev, "Failed to register v4l2 device\n");
> + goto err_clk_unprepare;
> + }
> + platform_set_drvdata(pdev, vpu);
> +
> + vpu->m2m_dev = v4l2_m2m_init(&vpu_m2m_ops);
> + if (IS_ERR(vpu->m2m_dev)) {
> + v4l2_err(&vpu->v4l2_dev, "Failed to init mem2mem device\n");
> + ret = PTR_ERR(vpu->m2m_dev);
> + goto err_v4l2_unreg;
> + }
> +
> + vpu->mdev.dev = vpu->dev;
> + strlcpy(vpu->mdev.model, DRIVER_NAME, sizeof(vpu->mdev.model));
> + media_device_init(&vpu->mdev);
> + vpu->v4l2_dev.mdev = &vpu->mdev;
> +
> + ret = rockchip_vpu_video_device_register(vpu);
> + if (ret) {
> + dev_err(&pdev->dev, "Failed to register encoder\n");
> + goto err_m2m_rel;
> + }
> +
> + ret = media_device_register(&vpu->mdev);
> + if (ret) {
> + v4l2_err(&vpu->v4l2_dev, "Failed to register mem2mem media device\n");
> + goto err_video_dev_unreg;
> + }
> + return 0;
> +err_video_dev_unreg:
> + if (vpu->vfd_enc) {
> + video_unregister_device(vpu->vfd_enc);
> + video_device_release(vpu->vfd_enc);
> + }
> +err_m2m_rel:
> + v4l2_m2m_release(vpu->m2m_dev);
> +err_v4l2_unreg:
> + v4l2_device_unregister(&vpu->v4l2_dev);
> +err_clk_unprepare:
> + clk_bulk_unprepare(vpu->variant->num_clocks, vpu->clocks);
> + pm_runtime_disable(vpu->dev);
> + return ret;
> +}
> +
> +static int rockchip_vpu_remove(struct platform_device *pdev)
> +{
> + struct rockchip_vpu_dev *vpu = platform_get_drvdata(pdev);
> +
> + v4l2_info(&vpu->v4l2_dev, "Removing %s\n", pdev->name);
> +
> + media_device_unregister(&vpu->mdev);
> + v4l2_m2m_unregister_media_controller(vpu->m2m_dev);
> + v4l2_m2m_release(vpu->m2m_dev);
> + media_device_cleanup(&vpu->mdev);
> + if (vpu->vfd_enc) {
> + video_unregister_device(vpu->vfd_enc);
> + video_device_release(vpu->vfd_enc);
> + }
> + v4l2_device_unregister(&vpu->v4l2_dev);
> + clk_bulk_unprepare(vpu->variant->num_clocks, vpu->clocks);
> + pm_runtime_disable(vpu->dev);
> + return 0;
> +}
> +
> +static int __maybe_unused rockchip_vpu_runtime_suspend(struct device *dev)
> +{
> + struct rockchip_vpu_dev *vpu = dev_get_drvdata(dev);
> +
> + clk_bulk_disable(vpu->variant->num_clocks, vpu->clocks);
> + return 0;
> +}
> +
> +static int __maybe_unused rockchip_vpu_runtime_resume(struct device *dev)
> +{
> + struct rockchip_vpu_dev *vpu = dev_get_drvdata(dev);
> +
> + return clk_bulk_enable(vpu->variant->num_clocks, vpu->clocks);
> +}
> +
> +static const struct dev_pm_ops rockchip_vpu_pm_ops = {
> + SET_SYSTEM_SLEEP_PM_OPS(pm_runtime_force_suspend,
> + pm_runtime_force_resume)
> + SET_RUNTIME_PM_OPS(rockchip_vpu_runtime_suspend,
> + rockchip_vpu_runtime_resume, NULL)
> +};
> +
> +static struct platform_driver rockchip_vpu_driver = {
> + .probe = rockchip_vpu_probe,
> + .remove = rockchip_vpu_remove,
> + .driver = {
> + .name = DRIVER_NAME,
> + .of_match_table = of_match_ptr(of_rockchip_vpu_match),
> + .pm = &rockchip_vpu_pm_ops,
> + },
> +};
> +module_platform_driver(rockchip_vpu_driver);
> +
> +MODULE_LICENSE("GPL v2");
> +MODULE_AUTHOR("Alpha Lin <Alpha.Lin@xxxxxxxxxxxxxx>");
> +MODULE_AUTHOR("Tomasz Figa <tfiga@xxxxxxxxxxxx>");
> +MODULE_AUTHOR("Ezequiel Garcia <ezequiel@xxxxxxxxxxxxx>");
> +MODULE_DESCRIPTION("Rockchip VPU codec driver");
> diff --git a/drivers/staging/media/rockchip/vpu/rockchip_vpu_enc.c b/drivers/staging/media/rockchip/vpu/rockchip_vpu_enc.c
> new file mode 100644
> index 000000000000..a041e8622ce5
> --- /dev/null
> +++ b/drivers/staging/media/rockchip/vpu/rockchip_vpu_enc.c
> @@ -0,0 +1,701 @@
> +// SPDX-License-Identifier: GPL-2.0
> +/*
> + * Rockchip VPU codec driver
> + *
> + * Copyright (C) 2018 Collabora, Ltd.
> + * Copyright (C) 2018 Rockchip Electronics Co., Ltd.
> + * Alpha Lin <Alpha.Lin@xxxxxxxxxxxxxx>
> + * Jeffy Chen <jeffy.chen@xxxxxxxxxxxxxx>
> + *
> + * Copyright (C) 2018 Google, Inc.
> + * Tomasz Figa <tfiga@xxxxxxxxxxxx>
> + *
> + * Based on s5p-mfc driver by Samsung Electronics Co., Ltd.
> + * Copyright (C) 2010-2011 Samsung Electronics Co., Ltd.
> + */
> +
> +#include <linux/interrupt.h>
> +#include <linux/io.h>
> +#include <linux/module.h>
> +#include <linux/pm_runtime.h>
> +#include <linux/videodev2.h>
> +#include <linux/workqueue.h>
> +#include <media/v4l2-ctrls.h>
> +#include <media/v4l2-event.h>
> +#include <media/v4l2-mem2mem.h>
> +#include <media/videobuf2-core.h>
> +#include <media/videobuf2-dma-sg.h>
> +
> +#include "rockchip_vpu.h"
> +#include "rockchip_vpu_hw.h"
> +#include "rockchip_vpu_common.h"
> +
> +/**
> + * struct v4l2_format_info - information about a V4L2 format
> + * @format: 4CC format identifier (V4L2_PIX_FMT_*)
> + * @header_size: Size of header, optional and used by compressed formats
> + * @num_planes: Number of planes (1 to 3)
> + * @cpp: Number of bytes per pixel (per plane)
> + * @hsub: Horizontal chroma subsampling factor
> + * @vsub: Vertical chroma subsampling factor
> + * @is_compressed: Is it a compressed format?
'multiplanar' is not documented.
Is it needed? Doesn't num_planes > 1 do the same?
> + */
> +struct v4l2_format_info {
> + u32 format;
> + u32 header_size;
> + u8 num_planes;
> + u8 cpp[3];
> + u8 hsub;
> + u8 vsub;
> + bool is_compressed;
> + bool multiplanar;
> +};
> +
> +static const struct v4l2_format_info *
> +v4l2_format_info(u32 format)
> +{
> + static const struct v4l2_format_info formats[] = {
> + { .format = V4L2_PIX_FMT_YUV420M, .num_planes = 3, .cpp = { 1, 1, 1 }, .hsub = 2, .vsub = 2, .multiplanar = 1 },
> + { .format = V4L2_PIX_FMT_NV12M, .num_planes = 2, .cpp = { 1, 2, 0 }, .hsub = 2, .vsub = 2, .multiplanar = 1 },
> + { .format = V4L2_PIX_FMT_YUYV, .num_planes = 1, .cpp = { 2, 0, 0 }, .hsub = 2, .vsub = 1 },
> + { .format = V4L2_PIX_FMT_UYVY, .num_planes = 1, .cpp = { 2, 0, 0 }, .hsub = 2, .vsub = 1 },
> + };
> + unsigned int i;
> +
> + for (i = 0; i < ARRAY_SIZE(formats); ++i) {
> + if (formats[i].format == format)
> + return &formats[i];
> + }
> +
> + vpu_err("Unsupported V4L 4CC format (%08x)\n", format);
> + return NULL;
> +}
> +
> +static void
> +fill_pixfmt_mp(struct v4l2_pix_format_mplane *pixfmt,
> + int pixelformat, int width, int height)
> +{
> + const struct v4l2_format_info *info;
> + struct v4l2_plane_pix_format *plane;
> + int i;
> +
> + info = v4l2_format_info(pixelformat);
> + if (!info)
> + return;
> +
> + pixfmt->width = width;
> + pixfmt->height = height;
> + pixfmt->pixelformat = pixelformat;
> +
> + if (!info->multiplanar) {
> + pixfmt->num_planes = 1;
> + plane = &pixfmt->plane_fmt[0];
> + plane->bytesperline = info->is_compressed ?
> + 0 : width * info->cpp[0];
> + plane->sizeimage = info->header_size;
> + for (i = 0; i < info->num_planes; i++) {
> + unsigned int hsub = (i == 0) ? 1 : info->hsub;
> + unsigned int vsub = (i == 0) ? 1 : info->vsub;
> +
> + plane->sizeimage +=
> + width * height * info->cpp[i] / (hsub * vsub);
> + }
> + } else {
> + pixfmt->num_planes = info->num_planes;
> + for (i = 0; i < info->num_planes; i++) {
> + unsigned int hsub = (i == 0) ? 1 : info->hsub;
> + unsigned int vsub = (i == 0) ? 1 : info->vsub;
> +
> + plane = &pixfmt->plane_fmt[i];
> + plane->bytesperline = width * info->cpp[i] / hsub;
> + plane->sizeimage =
> + width * height * info->cpp[i] / (hsub * vsub);
> + }
> + }
> +}
> +
> +static const struct rockchip_vpu_fmt *
> +rockchip_vpu_find_format(struct rockchip_vpu_ctx *ctx, u32 fourcc)
> +{
> + struct rockchip_vpu_dev *dev = ctx->dev;
> + const struct rockchip_vpu_fmt *formats;
> + unsigned int num_fmts, i;
> +
> + formats = dev->variant->enc_fmts;
> + num_fmts = dev->variant->num_enc_fmts;
> + for (i = 0; i < num_fmts; i++)
> + if (formats[i].fourcc == fourcc)
> + return &formats[i];
> + return NULL;
> +}
> +
> +static const struct rockchip_vpu_fmt *
> +rockchip_vpu_get_default_fmt(struct rockchip_vpu_ctx *ctx, bool bitstream)
> +{
> + struct rockchip_vpu_dev *dev = ctx->dev;
> + const struct rockchip_vpu_fmt *formats;
> + unsigned int num_fmts, i;
> +
> + formats = dev->variant->enc_fmts;
> + num_fmts = dev->variant->num_enc_fmts;
> + for (i = 0; i < num_fmts; i++) {
> + if (bitstream == (formats[i].codec_mode != RK_VPU_MODE_NONE))
> + return &formats[i];
> + }
> + return NULL;
> +}
> +
> +static int vidioc_querycap(struct file *file, void *priv,
> + struct v4l2_capability *cap)
> +{
> + struct rockchip_vpu_dev *vpu = video_drvdata(file);
> +
> + strlcpy(cap->driver, vpu->dev->driver->name, sizeof(cap->driver));
> + strlcpy(cap->card, vpu->vfd_enc->name, sizeof(cap->card));
Use strscpy instead of strcpy, strlcpy or strncpy.
Please check the driver code for this.
> + snprintf(cap->bus_info, sizeof(cap->bus_info), "platform: %s",
> + vpu->dev->driver->name);
> + return 0;
> +}
> +
> +static int vidioc_enum_framesizes(struct file *file, void *priv,
> + struct v4l2_frmsizeenum *fsize)
> +{
> + struct rockchip_vpu_ctx *ctx = fh_to_ctx(priv);
> + const struct rockchip_vpu_fmt *fmt;
> +
> + if (fsize->index != 0) {
> + vpu_debug(0, "invalid frame size index (expected 0, got %d)\n",
> + fsize->index);
> + return -EINVAL;
> + }
> +
> + fmt = rockchip_vpu_find_format(ctx, fsize->pixel_format);
> + if (!fmt) {
> + vpu_debug(0, "unsupported bitstream format (%08x)\n",
> + fsize->pixel_format);
> + return -EINVAL;
> + }
> +
> + /* This only makes sense for codec formats */
> + if (fmt->codec_mode == RK_VPU_MODE_NONE)
> + return -EINVAL;
> +
> + fsize->type = V4L2_FRMSIZE_TYPE_STEPWISE;
> + fsize->stepwise = fmt->frmsize;
> +
> + return 0;
> +}
> +
> +static int vidioc_enum_fmt_vid_cap_mplane(struct file *file, void *priv,
> + struct v4l2_fmtdesc *f)
> +{
> + struct rockchip_vpu_dev *dev = video_drvdata(file);
> + const struct rockchip_vpu_fmt *fmt;
> + const struct rockchip_vpu_fmt *formats;
> + int num_fmts, i, j = 0;
> +
> + formats = dev->variant->enc_fmts;
> + num_fmts = dev->variant->num_enc_fmts;
> + for (i = 0; i < num_fmts; i++) {
> + /* Skip uncompressed formats */
> + if (formats[i].codec_mode == RK_VPU_MODE_NONE)
> + continue;
> + if (j == f->index) {
> + fmt = &formats[i];
> + f->pixelformat = fmt->fourcc;
> + return 0;
> + }
> + ++j;
> + }
> + return -EINVAL;
> +}
> +
> +static int vidioc_enum_fmt_vid_out_mplane(struct file *file, void *priv,
> + struct v4l2_fmtdesc *f)
> +{
> + struct rockchip_vpu_dev *dev = video_drvdata(file);
> + const struct rockchip_vpu_fmt *formats;
> + const struct rockchip_vpu_fmt *fmt;
> + int num_fmts, i, j = 0;
> +
> + formats = dev->variant->enc_fmts;
> + num_fmts = dev->variant->num_enc_fmts;
> + for (i = 0; i < num_fmts; i++) {
> + if (formats[i].codec_mode != RK_VPU_MODE_NONE)
> + continue;
> + if (j == f->index) {
> + fmt = &formats[i];
> + f->pixelformat = fmt->fourcc;
> + return 0;
> + }
> + ++j;
> + }
> + return -EINVAL;
> +}
> +
> +static int vidioc_g_fmt_out(struct file *file, void *priv,
Please add the _mplane suffix to all these vidioc_*_fmt functions.
It's confusing otherwise.
> + struct v4l2_format *f)
> +{
> + struct v4l2_pix_format_mplane *pix_mp = &f->fmt.pix_mp;
> + struct rockchip_vpu_ctx *ctx = fh_to_ctx(priv);
> +
> + vpu_debug(4, "f->type = %d\n", f->type);
> +
> + *pix_mp = ctx->src_fmt;
> + pix_mp->colorspace = ctx->colorspace;
> + pix_mp->ycbcr_enc = ctx->ycbcr_enc;
> + pix_mp->xfer_func = ctx->xfer_func;
> + pix_mp->quantization = ctx->quantization;
> +
> + return 0;
> +}
> +
> +static int vidioc_g_fmt_cap(struct file *file, void *priv,
> + struct v4l2_format *f)
> +{
> + struct v4l2_pix_format_mplane *pix_mp = &f->fmt.pix_mp;
> + struct rockchip_vpu_ctx *ctx = fh_to_ctx(priv);
> +
> + vpu_debug(4, "f->type = %d\n", f->type);
> +
> + *pix_mp = ctx->dst_fmt;
> + pix_mp->colorspace = ctx->colorspace;
> + pix_mp->ycbcr_enc = ctx->ycbcr_enc;
> + pix_mp->xfer_func = ctx->xfer_func;
> + pix_mp->quantization = ctx->quantization;
> +
> + return 0;
> +}
> +
> +static int
> +vidioc_try_fmt_cap(struct file *file, void *priv, struct v4l2_format *f)
> +{
> + struct rockchip_vpu_ctx *ctx = fh_to_ctx(priv);
> + struct v4l2_pix_format_mplane *pix_mp = &f->fmt.pix_mp;
> + const struct rockchip_vpu_fmt *fmt;
> +
> + vpu_debug(4, "%c%c%c%c\n",
> + (pix_mp->pixelformat & 0x7f),
> + (pix_mp->pixelformat >> 8) & 0x7f,
> + (pix_mp->pixelformat >> 16) & 0x7f,
> + (pix_mp->pixelformat >> 24) & 0x7f);
> +
> + fmt = rockchip_vpu_find_format(ctx, pix_mp->pixelformat);
> + if (!fmt) {
> + fmt = rockchip_vpu_get_default_fmt(ctx, true);
> + f->fmt.pix.pixelformat = fmt->fourcc;
> + }
> +
> + pix_mp->num_planes = 1;
> + pix_mp->field = V4L2_FIELD_NONE;
> + pix_mp->width = clamp(pix_mp->width,
> + fmt->frmsize.min_width,
> + fmt->frmsize.max_width);
> + pix_mp->height = clamp(pix_mp->height,
> + fmt->frmsize.min_height,
> + fmt->frmsize.max_height);
> + pix_mp->plane_fmt[0].sizeimage = fmt->header_size +
> + pix_mp->width * pix_mp->height * fmt->max_depth;
> + memset(pix_mp->plane_fmt[0].reserved, 0,
> + sizeof(pix_mp->plane_fmt[0].reserved));
> + return 0;
> +}
> +
> +static int
> +vidioc_try_fmt_out(struct file *file, void *priv, struct v4l2_format *f)
> +{
> + struct rockchip_vpu_ctx *ctx = fh_to_ctx(priv);
> + struct v4l2_pix_format_mplane *pix_mp = &f->fmt.pix_mp;
> + const struct rockchip_vpu_fmt *fmt;
> + unsigned int width, height;
> + unsigned long dma_align;
> + bool need_alignment;
> + int i;
> +
> + vpu_debug(4, "%c%c%c%c\n",
> + (pix_mp->pixelformat & 0x7f),
> + (pix_mp->pixelformat >> 8) & 0x7f,
> + (pix_mp->pixelformat >> 16) & 0x7f,
> + (pix_mp->pixelformat >> 24) & 0x7f);
> +
> + fmt = rockchip_vpu_find_format(ctx, pix_mp->pixelformat);
> + if (!fmt) {
> + fmt = rockchip_vpu_get_default_fmt(ctx, false);
> + f->fmt.pix.pixelformat = fmt->fourcc;
> + }
> +
> + pix_mp->field = V4L2_FIELD_NONE;
> + width = clamp(pix_mp->width,
> + ctx->vpu_dst_fmt->frmsize.min_width,
> + ctx->vpu_dst_fmt->frmsize.max_width);
> + height = clamp(pix_mp->height,
> + ctx->vpu_dst_fmt->frmsize.min_height,
> + ctx->vpu_dst_fmt->frmsize.max_height);
> + /* Round up to macroblocks. */
> + width = round_up(width, MB_DIM);
> + height = round_up(height, MB_DIM);
> +
> + /* Fill remaining fields */
> + fill_pixfmt_mp(pix_mp, fmt->fourcc, width, height);
> +
> + for (i = 0; i < pix_mp->num_planes; i++) {
> + memset(pix_mp->plane_fmt[i].reserved, 0,
> + sizeof(pix_mp->plane_fmt[i].reserved));
> + }
> +
> + dma_align = dma_get_cache_alignment();
> + need_alignment = false;
> + for (i = 0; i < pix_mp->num_planes; i++) {
> + if (!IS_ALIGNED(pix_mp->plane_fmt[i].sizeimage,
> + dma_align)) {
> + need_alignment = true;
> + break;
> + }
> + }
> + if (!need_alignment)
> + return 0;
> +
> + pix_mp->height = round_up(pix_mp->height, dma_align * 4 / MB_DIM);
> + if (pix_mp->height > ctx->vpu_dst_fmt->frmsize.max_height) {
> + vpu_err("Aligned height higher than maximum.\n");
> + return -EINVAL;
> + }
> + /* Fill in remaining fields, again */
> + fill_pixfmt_mp(pix_mp, fmt->fourcc, pix_mp->width, pix_mp->height);
> + return 0;
> +}
> +
> +void rockchip_vpu_enc_reset_dst_fmt(struct rockchip_vpu_dev *vpu,
> + struct rockchip_vpu_ctx *ctx)
> +{
> + struct v4l2_pix_format_mplane *fmt = &ctx->dst_fmt;
> +
> + ctx->vpu_dst_fmt = rockchip_vpu_get_default_fmt(ctx, true);
> +
> + memset(fmt, 0, sizeof(*fmt));
> +
> + fmt->num_planes = 1;
> + fmt->width = clamp(fmt->width, ctx->vpu_dst_fmt->frmsize.min_width,
> + ctx->vpu_dst_fmt->frmsize.max_width);
> + fmt->height = clamp(fmt->height, ctx->vpu_dst_fmt->frmsize.min_height,
> + ctx->vpu_dst_fmt->frmsize.max_height);
> + fmt->pixelformat = ctx->vpu_dst_fmt->fourcc;
> + fmt->field = V4L2_FIELD_NONE;
> + fmt->colorspace = ctx->colorspace;
> + fmt->ycbcr_enc = ctx->ycbcr_enc;
> + fmt->xfer_func = ctx->xfer_func;
> + fmt->quantization = ctx->quantization;
> +
> + fmt->plane_fmt[0].sizeimage = ctx->vpu_dst_fmt->header_size +
> + fmt->width * fmt->height * ctx->vpu_dst_fmt->max_depth;
> +}
> +
> +void rockchip_vpu_enc_reset_src_fmt(struct rockchip_vpu_dev *vpu,
> + struct rockchip_vpu_ctx *ctx)
> +{
> + struct v4l2_pix_format_mplane *fmt = &ctx->src_fmt;
> + unsigned int width, height;
> +
> + ctx->vpu_src_fmt = rockchip_vpu_get_default_fmt(ctx, false);
> +
> + memset(fmt, 0, sizeof(*fmt));
> +
> + width = clamp(fmt->width, ctx->vpu_dst_fmt->frmsize.min_width,
> + ctx->vpu_dst_fmt->frmsize.max_width);
> + height = clamp(fmt->height, ctx->vpu_dst_fmt->frmsize.min_height,
> + ctx->vpu_dst_fmt->frmsize.max_height);
> + fmt->field = V4L2_FIELD_NONE;
> + fmt->colorspace = ctx->colorspace;
> + fmt->ycbcr_enc = ctx->ycbcr_enc;
> + fmt->xfer_func = ctx->xfer_func;
> + fmt->quantization = ctx->quantization;
> +
> + fill_pixfmt_mp(fmt, ctx->vpu_src_fmt->fourcc, width, height);
> +}
> +
> +static int
> +vidioc_s_fmt_out(struct file *file, void *priv, struct v4l2_format *f)
> +{
> + struct v4l2_pix_format_mplane *pix_mp = &f->fmt.pix_mp;
> + struct rockchip_vpu_ctx *ctx = fh_to_ctx(priv);
> + struct vb2_queue *vq, *peer_vq;
> + int ret;
> +
> + /* Change not allowed if queue is streaming. */
> + vq = v4l2_m2m_get_vq(ctx->fh.m2m_ctx, f->type);
> + if (vb2_is_streaming(vq))
> + return -EBUSY;
> +
> + ctx->colorspace = pix_mp->colorspace;
> + ctx->ycbcr_enc = pix_mp->ycbcr_enc;
> + ctx->xfer_func = pix_mp->xfer_func;
> + ctx->quantization = pix_mp->quantization;
> +
> + /*
> + * Pixel format change is not allowed when the other queue has
> + * buffers allocated.
> + */
> + peer_vq = v4l2_m2m_get_vq(ctx->fh.m2m_ctx,
> + V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE);
> + if (vb2_is_busy(peer_vq) &&
> + pix_mp->pixelformat != ctx->src_fmt.pixelformat)
> + return -EBUSY;
> +
> + ret = vidioc_try_fmt_out(file, priv, f);
> + if (ret)
> + return ret;
> +
> + ctx->vpu_src_fmt = rockchip_vpu_find_format(ctx, pix_mp->pixelformat);
> + ctx->src_fmt = *pix_mp;
> +
> + vpu_debug(0, "OUTPUT codec mode: %d\n", ctx->vpu_src_fmt->codec_mode);
> + vpu_debug(0, "fmt - w: %d, h: %d, mb - w: %d, h: %d\n",
> + pix_mp->width, pix_mp->height,
> + MB_WIDTH(pix_mp->width),
> + MB_HEIGHT(pix_mp->height));
> + return 0;
> +}
> +
> +static int
> +vidioc_s_fmt_cap(struct file *file, void *priv, struct v4l2_format *f)
> +{
> + struct v4l2_pix_format_mplane *pix_mp = &f->fmt.pix_mp;
> + struct rockchip_vpu_ctx *ctx = fh_to_ctx(priv);
> + struct rockchip_vpu_dev *vpu = ctx->dev;
> + struct vb2_queue *vq, *peer_vq;
> + int ret;
> +
> + /* Change not allowed if queue is streaming. */
> + vq = v4l2_m2m_get_vq(ctx->fh.m2m_ctx, f->type);
> + if (vb2_is_streaming(vq))
> + return -EBUSY;
> +
> + ctx->colorspace = pix_mp->colorspace;
> + ctx->ycbcr_enc = pix_mp->ycbcr_enc;
> + ctx->xfer_func = pix_mp->xfer_func;
> + ctx->quantization = pix_mp->quantization;
> +
> + /*
> + * Pixel format change is not allowed when the other queue has
> + * buffers allocated.
> + */
> + peer_vq = v4l2_m2m_get_vq(ctx->fh.m2m_ctx,
> + V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE);
> + if (vb2_is_busy(peer_vq) &&
> + pix_mp->pixelformat != ctx->dst_fmt.pixelformat)
> + return -EBUSY;
> +
> + ret = vidioc_try_fmt_cap(file, priv, f);
> + if (ret)
> + return ret;
> +
> + ctx->vpu_dst_fmt = rockchip_vpu_find_format(ctx, pix_mp->pixelformat);
> + ctx->dst_fmt = *pix_mp;
> +
> + vpu_debug(0, "CAPTURE codec mode: %d\n", ctx->vpu_dst_fmt->codec_mode);
> + vpu_debug(0, "fmt - w: %d, h: %d, mb - w: %d, h: %d\n",
> + pix_mp->width, pix_mp->height,
> + MB_WIDTH(pix_mp->width),
> + MB_HEIGHT(pix_mp->height));
> +
> + /*
> + * Current raw format might have become invalid with newly
> + * selected codec, so reset it to default just to be safe and
> + * keep internal driver state sane. User is mandated to set
> + * the raw format again after we return, so we don't need
> + * anything smarter.
> + */
> + rockchip_vpu_enc_reset_src_fmt(vpu, ctx);
> + return 0;
> +}
> +
> +const struct v4l2_ioctl_ops rockchip_vpu_enc_ioctl_ops = {
> + .vidioc_querycap = vidioc_querycap,
> + .vidioc_enum_framesizes = vidioc_enum_framesizes,
> +
> + .vidioc_try_fmt_vid_cap_mplane = vidioc_try_fmt_cap,
> + .vidioc_try_fmt_vid_out_mplane = vidioc_try_fmt_out,
> + .vidioc_s_fmt_vid_out_mplane = vidioc_s_fmt_out,
> + .vidioc_s_fmt_vid_cap_mplane = vidioc_s_fmt_cap,
> + .vidioc_g_fmt_vid_out_mplane = vidioc_g_fmt_out,
> + .vidioc_g_fmt_vid_cap_mplane = vidioc_g_fmt_cap,
> + .vidioc_enum_fmt_vid_out_mplane = vidioc_enum_fmt_vid_out_mplane,
> + .vidioc_enum_fmt_vid_cap_mplane = vidioc_enum_fmt_vid_cap_mplane,
> +
> + .vidioc_reqbufs = v4l2_m2m_ioctl_reqbufs,
> + .vidioc_querybuf = v4l2_m2m_ioctl_querybuf,
> + .vidioc_qbuf = v4l2_m2m_ioctl_qbuf,
> + .vidioc_dqbuf = v4l2_m2m_ioctl_dqbuf,
> + .vidioc_prepare_buf = v4l2_m2m_ioctl_prepare_buf,
> + .vidioc_create_bufs = v4l2_m2m_ioctl_create_bufs,
> + .vidioc_expbuf = v4l2_m2m_ioctl_expbuf,
> +
> + .vidioc_subscribe_event = v4l2_ctrl_subscribe_event,
> + .vidioc_unsubscribe_event = v4l2_event_unsubscribe,
> +
> + .vidioc_streamon = v4l2_m2m_ioctl_streamon,
> + .vidioc_streamoff = v4l2_m2m_ioctl_streamoff,
> +};
> +
> +static int
> +rockchip_vpu_queue_setup(struct vb2_queue *vq,
> + unsigned int *num_buffers,
> + unsigned int *num_planes,
> + unsigned int sizes[],
> + struct device *alloc_devs[])
> +{
> + struct rockchip_vpu_ctx *ctx = vb2_get_drv_priv(vq);
> + const struct rockchip_vpu_fmt *vpu_fmt;
> + struct v4l2_pix_format_mplane *pixfmt;
> + int i;
> +
> + switch (vq->type) {
> + case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE:
> + vpu_fmt = ctx->vpu_dst_fmt;
> + pixfmt = &ctx->dst_fmt;
> + break;
> + case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE:
> + vpu_fmt = ctx->vpu_src_fmt;
> + pixfmt = &ctx->src_fmt;
> + break;
> + default:
> + vpu_err("invalid queue type: %d\n", vq->type);
> + return -EINVAL;
> + }
> +
> + if (*num_planes) {
> + if (*num_planes != pixfmt->num_planes)
> + return -EINVAL;
> + for (i = 0; i < pixfmt->num_planes; ++i)
> + if (sizes[i] < pixfmt->plane_fmt[i].sizeimage)
> + return -EINVAL;
> + return 0;
> + }
> +
> + *num_planes = pixfmt->num_planes;
> + for (i = 0; i < pixfmt->num_planes; ++i)
> + sizes[i] = pixfmt->plane_fmt[i].sizeimage;
> + return 0;
> +}
> +
> +static int rockchip_vpu_buf_prepare(struct vb2_buffer *vb)
> +{
> + struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
> + struct vb2_queue *vq = vb->vb2_queue;
> + struct rockchip_vpu_ctx *ctx = vb2_get_drv_priv(vq);
> + const struct rockchip_vpu_fmt *vpu_fmt;
> + struct v4l2_pix_format_mplane *pixfmt;
> + unsigned int sz;
> + int ret = 0;
> + int i;
> +
> + switch (vq->type) {
> + case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE:
> + vpu_fmt = ctx->vpu_dst_fmt;
> + pixfmt = &ctx->dst_fmt;
> + break;
> + case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE:
> + vpu_fmt = ctx->vpu_src_fmt;
> + pixfmt = &ctx->src_fmt;
> +
> + if (vbuf->field == V4L2_FIELD_ANY)
> + vbuf->field = V4L2_FIELD_NONE;
> + if (vbuf->field != V4L2_FIELD_NONE) {
> + vpu_debug(4, "field %d not supported\n",
> + vbuf->field);
> + return -EINVAL;
> + }
> + break;
> + default:
> + vpu_err("invalid queue type: %d\n", vq->type);
> + return -EINVAL;
> + }
> +
> + for (i = 0; i < pixfmt->num_planes; ++i) {
> + sz = pixfmt->plane_fmt[i].sizeimage;
> + vpu_debug(4, "plane %d size: %ld, sizeimage: %u\n",
> + i, vb2_plane_size(vb, i), sz);
> + if (vb2_plane_size(vb, i) < sz) {
> + vpu_err("plane %d is too small\n", i);
> + ret = -EINVAL;
> + break;
> + }
> + }
> +
> + return ret;
> +}
> +
> +static void rockchip_vpu_buf_queue(struct vb2_buffer *vb)
> +{
> + struct rockchip_vpu_ctx *ctx = vb2_get_drv_priv(vb->vb2_queue);
> + struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
> +
> + v4l2_m2m_buf_queue(ctx->fh.m2m_ctx, vbuf);
> +}
> +
> +static int rockchip_vpu_start_streaming(struct vb2_queue *q, unsigned int count)
> +{
> + struct rockchip_vpu_ctx *ctx = vb2_get_drv_priv(q);
> + enum rockchip_vpu_codec_mode codec_mode;
> +
> + if (V4L2_TYPE_IS_OUTPUT(q->type))
> + ctx->sequence_out = 0;
> + else
> + ctx->sequence_cap = 0;
> +
> + /* Set codec_ops for the chosen destination format */
> + codec_mode = ctx->vpu_dst_fmt->codec_mode;
> +
> + vpu_debug(4, "Codec mode = %d\n", codec_mode);
> + ctx->codec_ops = &ctx->dev->variant->codec_ops[codec_mode];
> +
> + /* A bounce buffer is needed for the JPEG payload */
Why exactly is it needed? I assume it is because the DMA engine expects
that the JPEG data starts at a specific alignment? And that alignment
doesn't work with the header in front?
If that's the case, then there are ways around it: you would have to
add a APPn block to align to the right boundary, and you would need to
copy the header in the buf_prepare op (i.e. before the buffer is
synced for DMA).
Not saying you should do that now, but if this is the reason for the
bounce buffer, then this may be a future optimization.
> + if (!V4L2_TYPE_IS_OUTPUT(q->type)) {
> + ctx->bounce_size = ctx->dst_fmt.plane_fmt[0].sizeimage -
> + ctx->vpu_dst_fmt->header_size;
> + ctx->bounce_buf = dma_alloc_attrs(ctx->dev->dev,
> + ctx->bounce_size,
> + &ctx->bounce_dma_addr,
> + GFP_KERNEL,
> + DMA_ATTR_ALLOC_SINGLE_PAGES);
> + }
> + return 0;
> +}
> +
> +static void rockchip_vpu_stop_streaming(struct vb2_queue *q)
> +{
> + struct rockchip_vpu_ctx *ctx = vb2_get_drv_priv(q);
> +
> + if (!V4L2_TYPE_IS_OUTPUT(q->type))
> + dma_free_attrs(ctx->dev->dev,
> + ctx->bounce_size,
> + ctx->bounce_buf,
> + ctx->bounce_dma_addr,
> + DMA_ATTR_ALLOC_SINGLE_PAGES);
> +
> + /* The mem2mem framework calls v4l2_m2m_cancel_job before
> + * .stop_streaming, so there isn't any job running and
> + * it is safe to return all the buffers.
> + */
> + for (;;) {
> + struct vb2_v4l2_buffer *vbuf;
> +
> + if (V4L2_TYPE_IS_OUTPUT(q->type))
> + vbuf = v4l2_m2m_src_buf_remove(ctx->fh.m2m_ctx);
> + else
> + vbuf = v4l2_m2m_dst_buf_remove(ctx->fh.m2m_ctx);
> + if (!vbuf)
> + break;
> + v4l2_m2m_buf_done(vbuf, VB2_BUF_STATE_ERROR);
> + }
> +}
> +
> +const struct vb2_ops rockchip_vpu_enc_queue_ops = {
> + .queue_setup = rockchip_vpu_queue_setup,
> + .buf_prepare = rockchip_vpu_buf_prepare,
> + .buf_queue = rockchip_vpu_buf_queue,
> + .start_streaming = rockchip_vpu_start_streaming,
> + .stop_streaming = rockchip_vpu_stop_streaming,
> + .wait_prepare = vb2_ops_wait_prepare,
> + .wait_finish = vb2_ops_wait_finish,
> +};
> diff --git a/drivers/staging/media/rockchip/vpu/rockchip_vpu_hw.h b/drivers/staging/media/rockchip/vpu/rockchip_vpu_hw.h
> new file mode 100644
> index 000000000000..305362fd9584
> --- /dev/null
> +++ b/drivers/staging/media/rockchip/vpu/rockchip_vpu_hw.h
> @@ -0,0 +1,58 @@
> +// SPDX-License-Identifier: GPL-2.0
> +/*
> + * Rockchip VPU codec driver
> + *
> + * Copyright (C) 2018 Google, Inc.
> + * Tomasz Figa <tfiga@xxxxxxxxxxxx>
> + */
> +
> +#ifndef ROCKCHIP_VPU_HW_H_
> +#define ROCKCHIP_VPU_HW_H_
> +
> +#include <linux/interrupt.h>
> +#include <linux/v4l2-controls.h>
> +#include <media/videobuf2-core.h>
> +
> +struct rockchip_vpu_dev;
> +struct rockchip_vpu_ctx;
> +struct rockchip_vpu_buf;
> +struct rockchip_vpu_variant;
> +
> +/**
> + * struct rockchip_vpu_codec_ops - codec mode specific operations
> + *
> + * @run: Start single {en,de)coding job. Called from atomic context
> + * to indicate that a pair of buffers is ready and the hardware
> + * should be programmed and started.
> + * @done: Read back processing results and additional data from hardware.
> + * @reset: Reset the hardware in case of a timeout.
> + */
> +struct rockchip_vpu_codec_ops {
> + void (*run)(struct rockchip_vpu_ctx *ctx);
> + void (*done)(struct rockchip_vpu_ctx *ctx, enum vb2_buffer_state);
> + void (*reset)(struct rockchip_vpu_ctx *ctx);
> +};
> +
> +/**
> + * enum rockchip_vpu_enc_fmt - source format ID for hardware registers.
> + */
> +enum rockchip_vpu_enc_fmt {
> + RK3288_VPU_ENC_FMT_YUV420P = 0,
> + RK3288_VPU_ENC_FMT_YUV420SP = 1,
> + RK3288_VPU_ENC_FMT_YUYV422 = 2,
> + RK3288_VPU_ENC_FMT_UYVY422 = 3,
> +};
> +
> +extern const struct rockchip_vpu_variant rk3399_vpu_variant;
> +extern const struct rockchip_vpu_variant rk3288_vpu_variant;
> +
> +void rockchip_vpu_watchdog(struct work_struct *work);
> +void rockchip_vpu_run(struct rockchip_vpu_ctx *ctx);
> +void rockchip_vpu_irq_done(struct rockchip_vpu_dev *vpu,
> + unsigned int bytesused,
> + enum vb2_buffer_state result);
> +
> +void rk3288_vpu_jpeg_enc_run(struct rockchip_vpu_ctx *ctx);
> +void rk3399_vpu_jpeg_enc_run(struct rockchip_vpu_ctx *ctx);
> +
> +#endif /* ROCKCHIP_VPU_HW_H_ */
> diff --git a/drivers/staging/media/rockchip/vpu/rockchip_vpu_jpeg.c b/drivers/staging/media/rockchip/vpu/rockchip_vpu_jpeg.c
> new file mode 100644
> index 000000000000..678d53f3c2c2
> --- /dev/null
> +++ b/drivers/staging/media/rockchip/vpu/rockchip_vpu_jpeg.c
> @@ -0,0 +1,289 @@
> +/*
> + * Copyright (C) Collabora, Ltd.
> + *
> + * Based on GSPCA and CODA drivers:
> + * Copyright (C) Jean-Francois Moine (http://moinejf.free.fr)
> + * Copyright (C) 2014 Philipp Zabel, Pengutronix
> + */
> +#include <linux/kernel.h>
> +#include <linux/string.h>
> +#include "rockchip_vpu_jpeg.h"
> +
> +#define LUMA_QUANT_OFF 7
> +#define CHROMA_QUANT_OFF 72
> +#define HEIGHT_OFF 141
> +#define WIDTH_OFF 143
> +
> +#define HUFF_LUMA_DC_OFF 160
> +#define HUFF_LUMA_AC_OFF 193
> +#define HUFF_CHROMA_DC_OFF 376
> +#define HUFF_CHROMA_AC_OFF 409
> +
> +/* Default tables from JPEG ITU-T.81
> + * (ISO/IEC 10918-1) Annex K.3, I
> + */
> +static const unsigned char luma_q_table[] = {
> + 0x10, 0x0b, 0x0a, 0x10, 0x7c, 0x8c, 0x97, 0xa1,
> + 0x0c, 0x0c, 0x0e, 0x13, 0x7e, 0x9e, 0xa0, 0x9b,
> + 0x0e, 0x0d, 0x10, 0x18, 0x8c, 0x9d, 0xa9, 0x9c,
> + 0x0e, 0x11, 0x16, 0x1d, 0x97, 0xbb, 0xb4, 0xa2,
> + 0x12, 0x16, 0x25, 0x38, 0xa8, 0x6d, 0x67, 0xb1,
> + 0x18, 0x23, 0x37, 0x40, 0xb5, 0x68, 0x71, 0xc0,
> + 0x31, 0x40, 0x4e, 0x57, 0x67, 0x79, 0x78, 0x65,
> + 0x48, 0x5c, 0x5f, 0x62, 0x70, 0x64, 0x67, 0xc7,
> +};
> +
> +static const unsigned char chroma_q_table[] = {
> + 0x11, 0x12, 0x18, 0x2f, 0x63, 0x63, 0x63, 0x63,
> + 0x12, 0x15, 0x1a, 0x42, 0x63, 0x63, 0x63, 0x63,
> + 0x18, 0x1a, 0x38, 0x63, 0x63, 0x63, 0x63, 0x63,
> + 0x2f, 0x42, 0x63, 0x63, 0x63, 0x63, 0x63, 0x63,
> + 0x63, 0x63, 0x63, 0x63, 0x63, 0x63, 0x63, 0x63,
> + 0x63, 0x63, 0x63, 0x63, 0x63, 0x63, 0x63, 0x63,
> + 0x63, 0x63, 0x63, 0x63, 0x63, 0x63, 0x63, 0x63,
> + 0x63, 0x63, 0x63, 0x63, 0x63, 0x63, 0x63, 0x63
> +};
> +
> +/* Huffman tables are shared with CODA */
> +static const unsigned char luma_dc_table[] = {
> + 0x00, 0x01, 0x05, 0x01, 0x01, 0x01, 0x01, 0x01,
> + 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
> + 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07,
> + 0x08, 0x09, 0x0a, 0x0b,
> +};
> +
> +static const unsigned char chroma_dc_table[] = {
> + 0x00, 0x03, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01,
> + 0x01, 0x01, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00,
> + 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07,
> + 0x08, 0x09, 0x0a, 0x0b,
> +};
> +
> +static const unsigned char luma_ac_table[] = {
> + 0x00, 0x02, 0x01, 0x03, 0x03, 0x02, 0x04, 0x03,
> + 0x05, 0x05, 0x04, 0x04, 0x00, 0x00, 0x01, 0x7d,
> + 0x01, 0x02, 0x03, 0x00, 0x04, 0x11, 0x05, 0x12,
> + 0x21, 0x31, 0x41, 0x06, 0x13, 0x51, 0x61, 0x07,
> + 0x22, 0x71, 0x14, 0x32, 0x81, 0x91, 0xa1, 0x08,
> + 0x23, 0x42, 0xb1, 0xc1, 0x15, 0x52, 0xd1, 0xf0,
> + 0x24, 0x33, 0x62, 0x72, 0x82, 0x09, 0x0a, 0x16,
> + 0x17, 0x18, 0x19, 0x1a, 0x25, 0x26, 0x27, 0x28,
> + 0x29, 0x2a, 0x34, 0x35, 0x36, 0x37, 0x38, 0x39,
> + 0x3a, 0x43, 0x44, 0x45, 0x46, 0x47, 0x48, 0x49,
> + 0x4a, 0x53, 0x54, 0x55, 0x56, 0x57, 0x58, 0x59,
> + 0x5a, 0x63, 0x64, 0x65, 0x66, 0x67, 0x68, 0x69,
> + 0x6a, 0x73, 0x74, 0x75, 0x76, 0x77, 0x78, 0x79,
> + 0x7a, 0x83, 0x84, 0x85, 0x86, 0x87, 0x88, 0x89,
> + 0x8a, 0x92, 0x93, 0x94, 0x95, 0x96, 0x97, 0x98,
> + 0x99, 0x9a, 0xa2, 0xa3, 0xa4, 0xa5, 0xa6, 0xa7,
> + 0xa8, 0xa9, 0xaa, 0xb2, 0xb3, 0xb4, 0xb5, 0xb6,
> + 0xb7, 0xb8, 0xb9, 0xba, 0xc2, 0xc3, 0xc4, 0xc5,
> + 0xc6, 0xc7, 0xc8, 0xc9, 0xca, 0xd2, 0xd3, 0xd4,
> + 0xd5, 0xd6, 0xd7, 0xd8, 0xd9, 0xda, 0xe1, 0xe2,
> + 0xe3, 0xe4, 0xe5, 0xe6, 0xe7, 0xe8, 0xe9, 0xea,
> + 0xf1, 0xf2, 0xf3, 0xf4, 0xf5, 0xf6, 0xf7, 0xf8,
> + 0xf9, 0xfa,
> +};
> +
> +static const unsigned char chroma_ac_table[] = {
> + 0x00, 0x02, 0x01, 0x02, 0x04, 0x04, 0x03, 0x04,
> + 0x07, 0x05, 0x04, 0x04, 0x00, 0x01, 0x02, 0x77,
> + 0x00, 0x01, 0x02, 0x03, 0x11, 0x04, 0x05, 0x21,
> + 0x31, 0x06, 0x12, 0x41, 0x51, 0x07, 0x61, 0x71,
> + 0x13, 0x22, 0x32, 0x81, 0x08, 0x14, 0x42, 0x91,
> + 0xa1, 0xb1, 0xc1, 0x09, 0x23, 0x33, 0x52, 0xf0,
> + 0x15, 0x62, 0x72, 0xd1, 0x0a, 0x16, 0x24, 0x34,
> + 0xe1, 0x25, 0xf1, 0x17, 0x18, 0x19, 0x1a, 0x26,
> + 0x27, 0x28, 0x29, 0x2a, 0x35, 0x36, 0x37, 0x38,
> + 0x39, 0x3a, 0x43, 0x44, 0x45, 0x46, 0x47, 0x48,
> + 0x49, 0x4a, 0x53, 0x54, 0x55, 0x56, 0x57, 0x58,
> + 0x59, 0x5a, 0x63, 0x64, 0x65, 0x66, 0x67, 0x68,
> + 0x69, 0x6a, 0x73, 0x74, 0x75, 0x76, 0x77, 0x78,
> + 0x79, 0x7a, 0x82, 0x83, 0x84, 0x85, 0x86, 0x87,
> + 0x88, 0x89, 0x8a, 0x92, 0x93, 0x94, 0x95, 0x96,
> + 0x97, 0x98, 0x99, 0x9a, 0xa2, 0xa3, 0xa4, 0xa5,
> + 0xa6, 0xa7, 0xa8, 0xa9, 0xaa, 0xb2, 0xb3, 0xb4,
> + 0xb5, 0xb6, 0xb7, 0xb8, 0xb9, 0xba, 0xc2, 0xc3,
> + 0xc4, 0xc5, 0xc6, 0xc7, 0xc8, 0xc9, 0xca, 0xd2,
> + 0xd3, 0xd4, 0xd5, 0xd6, 0xd7, 0xd8, 0xd9, 0xda,
> + 0xe2, 0xe3, 0xe4, 0xe5, 0xe6, 0xe7, 0xe8, 0xe9,
> + 0xea, 0xf2, 0xf3, 0xf4, 0xf5, 0xf6, 0xf7, 0xf8,
> + 0xf9, 0xfa,
> +};
> +
> +/* For simplicity, we keep a pre-formatted JPEG header,
> + * and we'll use fixed offsets to change the width, height
> + * quantization tables, etc.
> + */
> +static const unsigned char rockchip_vpu_jpeg_header[JPEG_HEADER_SIZE] = {
> + /* SOI */
> + 0xff, 0xd8,
> +
> + /* DQT */
> + 0xff, 0xdb, 0x00, 0x84,
> +
> + 0x00,
> + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
> + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
> + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
> + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
> + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
> + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
> + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
> + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
> +
> + 0x01,
> + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
> + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
> + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
> + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
> + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
> + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
> + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
> + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
> +
> + /* SOF */
> + 0xff, 0xc0, 0x00, 0x11, 0x08, 0x00, 0xf0, 0x01,
> + 0x40, 0x03, 0x01, 0x22, 0x00, 0x02, 0x11, 0x01,
> + 0x03, 0x11, 0x01,
> +
> + /* DHT */
> + 0xff, 0xc4, 0x00, 0x1f, 0x00,
> +
> + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
> + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
> + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
> + 0x00, 0x00, 0x00, 0x00,
> +
> + /* DHT */
> + 0xff, 0xc4, 0x00, 0xb5, 0x10,
> +
> + 0x00, 0x00,
> + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
> + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
> + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
> + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
> + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
> + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
> + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
> + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
> + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
> + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
> + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
> + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
> + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
> + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
> + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
> + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
> + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
> + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
> + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
> + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
> + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
> + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
> +
> + /* DHT */
> + 0xff, 0xc4, 0x00, 0x1f, 0x01,
> +
> + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
> + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
> + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
> + 0x00, 0x00, 0x00, 0x00,
> +
> + /* DHT */
> + 0xff, 0xc4, 0x00, 0xb5, 0x11,
> +
> + 0x00, 0x00,
> + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
> + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
> + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
> + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
> + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
> + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
> + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
> + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
> + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
> + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
> + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
> + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
> + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
> + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
> + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
> + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
> + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
> + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
> + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
> + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
> + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
> + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
> +
> + /* SOS */
> + 0xff, 0xda, 0x00, 0x0c, 0x03, 0x01, 0x00, 0x02,
> + 0x11, 0x03, 0x11, 0x00, 0x3f, 0x00,
> +};
> +
> +static void
> +jpeg_scale_quant_table(unsigned char *q_tab,
> + const unsigned char *tab, int scale)
> +{
> + unsigned int temp;
> + int i;
> +
> + for (i = 0; i < 64; i++) {
> + temp = DIV_ROUND_CLOSEST((unsigned int)tab[i] * scale, 100);
> + if (temp <= 0)
> + temp = 1;
> + if (temp > 255)
> + temp = 255;
> + q_tab[i] = (unsigned char)temp;
> + }
> +}
> +
> +static void jpeg_set_quality(unsigned char *buffer, int quality)
> +{
> + int scale;
> +
> + /*
> + * Non-linear scaling factor:
> + * [5,50] -> [1000..100], [51,100] -> [98..0]
> + */
> + if (quality < 50)
> + scale = 5000 / quality;
> + else
> + scale = 200 - 2 * quality;
> +
> + jpeg_scale_quant_table(buffer + LUMA_QUANT_OFF,
> + luma_q_table, scale);
> + jpeg_scale_quant_table(buffer + CHROMA_QUANT_OFF,
> + chroma_q_table, scale);
> +}
> +
> +unsigned char *
> +rockchip_vpu_jpeg_get_qtable(struct rockchip_vpu_jpeg_ctx *ctx, int index)
> +{
> + if (index == 0)
> + return ctx->buffer + LUMA_QUANT_OFF;
> + return ctx->buffer + CHROMA_QUANT_OFF;
> +}
> +
> +void rockchip_vpu_jpeg_render(struct rockchip_vpu_jpeg_ctx *ctx)
> +{
> + char *buf = ctx->buffer;
> +
> + memcpy(buf, rockchip_vpu_jpeg_header,
> + sizeof(rockchip_vpu_jpeg_header));
> +
> + buf[HEIGHT_OFF + 0] = ctx->height >> 8;
> + buf[HEIGHT_OFF + 1] = ctx->height;
> + buf[WIDTH_OFF + 0] = ctx->width >> 8;
> + buf[WIDTH_OFF + 1] = ctx->width;
> +
> + memcpy(buf + HUFF_LUMA_DC_OFF, luma_dc_table, sizeof(luma_dc_table));
> + memcpy(buf + HUFF_LUMA_AC_OFF, luma_ac_table, sizeof(luma_ac_table));
> + memcpy(buf + HUFF_CHROMA_DC_OFF, chroma_dc_table,
> + sizeof(chroma_dc_table));
> + memcpy(buf + HUFF_CHROMA_AC_OFF, chroma_ac_table,
> + sizeof(chroma_ac_table));
> +
> + jpeg_set_quality(buf, ctx->quality);
> +}
> diff --git a/drivers/staging/media/rockchip/vpu/rockchip_vpu_jpeg.h b/drivers/staging/media/rockchip/vpu/rockchip_vpu_jpeg.h
> new file mode 100644
> index 000000000000..a616d85359e8
> --- /dev/null
> +++ b/drivers/staging/media/rockchip/vpu/rockchip_vpu_jpeg.h
> @@ -0,0 +1,12 @@
> +#define JPEG_HEADER_SIZE 601
> +
> +struct rockchip_vpu_jpeg_ctx {
> + int width;
> + int height;
> + int quality;
> + unsigned char *buffer;
> +};
> +
> +unsigned char *
> +rockchip_vpu_jpeg_get_qtable(struct rockchip_vpu_jpeg_ctx *ctx, int index);
> +void rockchip_vpu_jpeg_render(struct rockchip_vpu_jpeg_ctx *ctx);
>
Regards,
Hans
