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Message-ID: <1498492189.3710.4.camel@ndufresne.ca>
Date: Mon, 26 Jun 2017 11:49:49 -0400
From: Nicolas Dufresne <nicolas@...fresne.ca>
To: Jacob Chen <jacob-chen@...wrt.com>, linux-kernel@...r.kernel.org
Cc: linux-rockchip@...ts.infradead.org,
linux-arm-kernel@...ts.infradead.org, heiko@...ech.de,
linux-media@...r.kernel.org, mchehab@...nel.org,
hans.verkuil@...co.com
Subject: Re: [PATCH 1/5] [media] rockchip/rga: v4l2 m2m support
Le lundi 26 juin 2017 à 22:51 +0800, Jacob Chen a écrit :
> Rockchip RGA is a separate 2D raster graphic acceleration unit. It
> accelerates 2D graphics operations, such as point/line drawing, image
> scaling, rotation, BitBLT, alpha blending and image blur/sharpness.
>
> The drvier is mostly based on s5p-g2d v4l2 m2m driver.
> And supports various operations from the rendering pipeline.
> - copy
> - fast solid color fill
> - rotation
> - flip
> - alpha blending
>
> The code in rga-hw.c is used to configure regs accroding to
> operations.
>
> The code in rga-buf.c is used to create private mmu table for RGA.
> The tables is stored in a list, and be removed when buffer is
> cleanup.
>
> Signed-off-by: Jacob Chen <jacob-chen@...wrt.com>
> ---
> drivers/media/platform/Kconfig | 11 +
> drivers/media/platform/Makefile | 2 +
> drivers/media/platform/rockchip-rga/Makefile | 3 +
> drivers/media/platform/rockchip-rga/rga-buf.c | 176 +++++
> drivers/media/platform/rockchip-rga/rga-hw.c | 456 ++++++++++++
> drivers/media/platform/rockchip-rga/rga-hw.h | 434 ++++++++++++
> drivers/media/platform/rockchip-rga/rga.c | 979
> ++++++++++++++++++++++++++
> drivers/media/platform/rockchip-rga/rga.h | 133 ++++
> 8 files changed, 2194 insertions(+)
> create mode 100644 drivers/media/platform/rockchip-rga/Makefile
> create mode 100644 drivers/media/platform/rockchip-rga/rga-buf.c
> create mode 100644 drivers/media/platform/rockchip-rga/rga-hw.c
> create mode 100644 drivers/media/platform/rockchip-rga/rga-hw.h
> create mode 100644 drivers/media/platform/rockchip-rga/rga.c
> create mode 100644 drivers/media/platform/rockchip-rga/rga.h
>
> diff --git a/drivers/media/platform/Kconfig
> b/drivers/media/platform/Kconfig
> index c9106e1..8199bcf 100644
> --- a/drivers/media/platform/Kconfig
> +++ b/drivers/media/platform/Kconfig
> @@ -411,6 +411,17 @@ config VIDEO_RENESAS_VSP1
> To compile this driver as a module, choose M here: the
> module
> will be called vsp1.
>
> +config VIDEO_ROCKCHIP_RGA
> + tristate "Rockchip Raster 2d Grapphic Acceleration Unit"
> + depends on VIDEO_DEV && VIDEO_V4L2 && HAS_DMA
> + depends on ARCH_ROCKCHIP || COMPILE_TEST
> + select VIDEOBUF2_DMA_SG
> + select V4L2_MEM2MEM_DEV
> + default n
> + ---help---
> + This is a v4l2 driver for Rockchip SOC RGA2
> + 2d graphics accelerator.
> +
> config VIDEO_TI_VPE
> tristate "TI VPE (Video Processing Engine) driver"
> depends on VIDEO_DEV && VIDEO_V4L2
> diff --git a/drivers/media/platform/Makefile
> b/drivers/media/platform/Makefile
> index 349ddf6..3bf096f 100644
> --- a/drivers/media/platform/Makefile
> +++ b/drivers/media/platform/Makefile
> @@ -54,6 +54,8 @@ obj-$(CONFIG_VIDEO_RENESAS_FDP1) +=
> rcar_fdp1.o
> obj-$(CONFIG_VIDEO_RENESAS_JPU) += rcar_jpu.o
> obj-$(CONFIG_VIDEO_RENESAS_VSP1) += vsp1/
>
> +obj-$(CONFIG_VIDEO_ROCKCHIP_RGA) += rockchip-rga/
> +
> obj-y += omap/
>
> obj-$(CONFIG_VIDEO_AM437X_VPFE) += am437x/
> diff --git a/drivers/media/platform/rockchip-rga/Makefile
> b/drivers/media/platform/rockchip-rga/Makefile
> new file mode 100644
> index 0000000..92fe254
> --- /dev/null
> +++ b/drivers/media/platform/rockchip-rga/Makefile
> @@ -0,0 +1,3 @@
> +rockchip-rga-objs := rga.o rga-hw.o rga-buf.o
> +
> +obj-$(CONFIG_VIDEO_ROCKCHIP_RGA) += rockchip-rga.o
> diff --git a/drivers/media/platform/rockchip-rga/rga-buf.c
> b/drivers/media/platform/rockchip-rga/rga-buf.c
> new file mode 100644
> index 0000000..8582092
> --- /dev/null
> +++ b/drivers/media/platform/rockchip-rga/rga-buf.c
> @@ -0,0 +1,176 @@
> +/*
> + * Copyright (C) Fuzhou Rockchip Electronics Co.Ltd
> + * Author: Jacob Chen <jacob-chen@...wrt.com>
> + *
> + * This software is licensed under the terms of the GNU General
> Public
> + * License version 2, as published by the Free Software Foundation,
> and
> + * may be copied, distributed, and modified under those terms.
> + *
> + * This program is distributed in the hope that it will be useful,
> + * but WITHOUT ANY WARRANTY; without even the implied warranty of
> + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
> + * GNU General Public License for more details.
> + */
> +
> +#include <linux/pm_runtime.h>
> +
> +#include <media/v4l2-device.h>
> +#include <media/v4l2-ioctl.h>
> +#include <media/v4l2-mem2mem.h>
> +#include <media/videobuf2-dma-sg.h>
> +#include <media/videobuf2-v4l2.h>
> +
> +#include "rga-hw.h"
> +#include "rga.h"
> +
> +static int
> +rga_queue_setup(struct vb2_queue *vq,
> + unsigned int *nbuffers, unsigned int *nplanes,
> + unsigned int sizes[], struct device *alloc_devs[])
> +{
> + struct rga_ctx *ctx = vb2_get_drv_priv(vq);
> + struct rga_frame *f = rga_get_frame(ctx, vq->type);
> +
> + if (IS_ERR(f))
> + return PTR_ERR(f);
> +
> + sizes[0] = f->size;
> + *nplanes = 1;
> +
> + if (*nbuffers == 0)
> + *nbuffers = 1;
> +
> + return 0;
> +}
> +
> +static int rga_buf_prepare(struct vb2_buffer *vb)
> +{
> + struct rga_ctx *ctx = vb2_get_drv_priv(vb->vb2_queue);
> + struct rga_frame *f = rga_get_frame(ctx, vb->vb2_queue-
> >type);
> +
> + if (IS_ERR(f))
> + return PTR_ERR(f);
> +
> + vb2_set_plane_payload(vb, 0, f->size);
> +
> + return 0;
> +}
> +
> +static void rga_buf_queue(struct vb2_buffer *vb)
> +{
> + struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
> + struct rga_ctx *ctx = vb2_get_drv_priv(vb->vb2_queue);
> + v4l2_m2m_buf_queue(ctx->fh.m2m_ctx, vbuf);
> +}
> +
> +static int rga_buf_init(struct vb2_buffer *vb)
> +{
> + struct rga_ctx *ctx = vb2_get_drv_priv(vb->vb2_queue);
> + struct rockchip_rga *rga = ctx->rga;
> + struct sg_table *sgt;
> + struct scatterlist *sgl;
> + unsigned int *pages;
> + struct rga_buf *buf;
> + unsigned int address, len, i, p;
> + unsigned int mapped_size = 0;
> +
> + /* Create local MMU table for RGA */
> + sgt = vb2_plane_cookie(vb, 0);
> +
> + /*
> + * Alloc (2^3 * 4K) = 32K byte for storing pages, those
> space could
> + * cover 32K * 4K = 128M ram address.
> + */
> + pages = (unsigned int *)__get_free_pages(GFP_KERNEL |
> __GFP_ZERO, 3);
> +
> + for_each_sg(sgt->sgl, sgl, sgt->nents, i) {
> + len = sg_dma_len(sgl) >> PAGE_SHIFT;
> + address = sg_phys(sgl);
> +
> + for (p = 0; p < len; p++) {
> + dma_addr_t phys = address + (p <<
> PAGE_SHIFT);
> + pages[mapped_size + p] = phys;
> + }
> +
> + mapped_size += len;
> + }
> +
> + /* sync local MMU table for RGA */
> + dma_sync_single_for_device(rga->dev, virt_to_phys(pages),
> + 8 * PAGE_SIZE,
> DMA_BIDIRECTIONAL);
> +
> + /* Store the buffer to the RGA private buffers list */
> + buf = kmalloc(sizeof(struct rga_buf), GFP_KERNEL);
> + buf->index = vb->index;
> + buf->type = vb->type;
> + buf->mmu_pages = pages;
> +
> + list_add_tail(&buf->entry, &ctx->buffers_list);
> +
> + return 0;
> +}
> +
> +static void rga_buf_cleanup(struct vb2_buffer *vb)
> +{
> + struct rga_ctx *ctx = vb2_get_drv_priv(vb->vb2_queue);
> + struct rga_buf *buf, *tmp;
> +
> + /* Release the RGA private buffers */
> + list_for_each_entry_safe(buf, tmp, &ctx->buffers_list,
> entry) {
> + if (buf->index == vb->index && buf->type == vb-
> >type) {
> + free_pages((unsigned long)buf->mmu_pages,
> 3);
> + list_del(&buf->entry);
> + kfree(buf);
> + }
> + }
> +}
> +
> +static void rga_buf_stop_streaming(struct vb2_queue *q)
> +{
> + struct rga_ctx *ctx = vb2_get_drv_priv(q);
> + struct vb2_v4l2_buffer *vbuf;
> +
> + for (;;) {
> + 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 == NULL)
> + return;
> + v4l2_m2m_buf_done(vbuf, VB2_BUF_STATE_ERROR);
> + }
> +}
> +
> +const struct vb2_ops rga_qops = {
> + .queue_setup = rga_queue_setup,
> + .buf_prepare = rga_buf_prepare,
> + .buf_queue = rga_buf_queue,
> + .buf_init = rga_buf_init,
> + .buf_cleanup = rga_buf_cleanup,
> + .stop_streaming = rga_buf_stop_streaming,
> +};
> +
> +void *rga_buf_find_page(struct vb2_buffer *vb)
> +{
> + struct rga_ctx *ctx = vb2_get_drv_priv(vb->vb2_queue);
> + struct rga_buf *buf;
> +
> + list_for_each_entry(buf, &ctx->buffers_list, entry) {
> + if (buf->index == vb->index && buf->type == vb-
> >type) {
> + return buf->mmu_pages;
> + }
> + }
> +
> + return NULL;
> +}
> +
> +void rga_buf_clean(struct rga_ctx *ctx)
> +{
> + struct rga_buf *buf, *tmp;
> +
> + list_for_each_entry_safe(buf, tmp, &ctx->buffers_list,
> entry) {
> + free_pages((unsigned long)buf->mmu_pages, 3);
> + list_del(&buf->entry);
> + kfree(buf);
> + }
> +}
> diff --git a/drivers/media/platform/rockchip-rga/rga-hw.c
> b/drivers/media/platform/rockchip-rga/rga-hw.c
> new file mode 100644
> index 0000000..5c20fc8
> --- /dev/null
> +++ b/drivers/media/platform/rockchip-rga/rga-hw.c
> @@ -0,0 +1,456 @@
> +/*
> + * Copyright (C) Fuzhou Rockchip Electronics Co.Ltd
> + * Author: Jacob Chen <jacob-chen@...wrt.com>
> + *
> + * This software is licensed under the terms of the GNU General
> Public
> + * License version 2, as published by the Free Software Foundation,
> and
> + * may be copied, distributed, and modified under those terms.
> + *
> + * This program is distributed in the hope that it will be useful,
> + * but WITHOUT ANY WARRANTY; without even the implied warranty of
> + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
> + * GNU General Public License for more details.
> + */
> +
> +#include <linux/pm_runtime.h>
> +
> +#include "rga-hw.h"
> +#include "rga.h"
> +
> +enum e_rga_start_pos {
> + LT = 0,
> + LB = 1,
> + RT = 2,
> + RB = 3,
> +};
> +
> +struct rga_addr_offset {
> + unsigned int y_off;
> + unsigned int u_off;
> + unsigned int v_off;
> +};
> +
> +struct rga_corners_addr_offset {
> + struct rga_addr_offset left_top;
> + struct rga_addr_offset right_top;
> + struct rga_addr_offset left_bottom;
> + struct rga_addr_offset right_bottom;
> +};
> +
> +static unsigned int rga_get_scaling(unsigned int src, unsigned int
> dst)
> +{
> + /*
> + * The rga hw scaling factor is a normalized inverse of the
> scaling factor.
> + * For example: When source width is 100 and destination
> width is 200
> + * (scaling of 2x), then the hw factor is NC * 100 / 200.
> + * The normalization factor (NC) is 2^16 = 0x10000.
> + */
> +
> + return (src > dst) ? ((dst << 16) / src) : ((src << 16) /
> dst);
> +}
> +
> +static struct rga_corners_addr_offset
> +rga_get_addr_offset(struct rga_frame *frm, unsigned int x, unsigned
> int y,
> + unsigned int w, unsigned int h)
> +{
> + struct rga_corners_addr_offset offsets;
> + struct rga_addr_offset *lt, *lb, *rt, *rb;
> + unsigned int x_div = 0,
> + y_div = 0, uv_stride = 0, pixel_width = 0,
> uv_factor = 0;
> +
> + lt = &offsets.left_top;
> + lb = &offsets.left_bottom;
> + rt = &offsets.right_top;
> + rb = &offsets.right_bottom;
> +
> + x_div = frm->fmt->x_div;
> + y_div = frm->fmt->y_div;
> + uv_factor = frm->fmt->uv_factor;
> + uv_stride = frm->stride / x_div;
> + pixel_width = frm->stride / frm->width;
> +
> + lt->y_off = y * frm->stride + x * pixel_width;
> + lt->u_off =
> + frm->width * frm->height + (y / y_div) * uv_stride + x /
> x_div;
> + lt->v_off = lt->u_off + frm->width * frm->height /
> uv_factor;
> +
> + lb->y_off = lt->y_off + (h - 1) * frm->stride;
> + lb->u_off = lt->u_off + (h / y_div - 1) * uv_stride;
> + lb->v_off = lt->v_off + (h / y_div - 1) * uv_stride;
> +
> + rt->y_off = lt->y_off + (w - 1) * pixel_width;
> + rt->u_off = lt->u_off + w / x_div - 1;
> + rt->v_off = lt->v_off + w / x_div - 1;
> +
> + rb->y_off = lb->y_off + (w - 1) * pixel_width;
> + rb->u_off = lb->u_off + w / x_div - 1;
> + rb->v_off = lb->v_off + w / x_div - 1;
> +
> + return offsets;
> +}
> +
> +static struct rga_addr_offset *rga_lookup_draw_pos(struct
> + rga_corners_addr_offset
> + *offsets, u32 rotate_mode,
> + u32 mirr_mode)
> +{
> + static enum e_rga_start_pos rot_mir_point_matrix[4][4] = {
> + {
> + LT, RT, LB, RB,
> + },
> + {
> + RT, LT, RB, LB,
> + },
> + {
> + RB, LB, RT, LT,
> + },
> + {
> + LB, RB, LT, RT,
> + },
> + };
> +
> + if (offsets == NULL)
> + return NULL;
> +
> + switch (rot_mir_point_matrix[rotate_mode][mirr_mode]) {
> + case LT:
> + return &offsets->left_top;
> + case LB:
> + return &offsets->left_bottom;
> + case RT:
> + return &offsets->right_top;
> + case RB:
> + return &offsets->right_bottom;
> + };
> +
> + return NULL;
> +}
> +
> +static void rga_cmd_set_src_addr(struct rga_ctx *ctx, void
> *mmu_pages)
> +{
> + u32 *dest = ctx->cmdbuf_virt;
> + unsigned int reg;
> +
> + reg = RGA_MMU_SRC_BASE - RGA_MODE_BASE_REG;
> + dest[reg >> 2] = virt_to_phys(mmu_pages) >> 4;
> +
> + reg = RGA_MMU_CTRL1 - RGA_MODE_BASE_REG;
> + dest[reg >> 2] |= 0x7;
> +}
> +
> +static void rga_cmd_set_src1_addr(struct rga_ctx *ctx, void
> *mmu_pages)
> +{
> + u32 *dest = ctx->cmdbuf_virt;
> + unsigned int reg;
> +
> + reg = RGA_MMU_SRC1_BASE - RGA_MODE_BASE_REG;
> + dest[reg >> 2] = virt_to_phys(mmu_pages) >> 4;
> +
> + reg = RGA_MMU_CTRL1 - RGA_MODE_BASE_REG;
> + dest[reg >> 2] |= 0x7 << 4;
> +}
> +
> +static void rga_cmd_set_dst_addr(struct rga_ctx *ctx, void
> *mmu_pages)
> +{
> + u32 *dest = ctx->cmdbuf_virt;
> + unsigned int reg;
> +
> + reg = RGA_MMU_DST_BASE - RGA_MODE_BASE_REG;
> + dest[reg >> 2] = virt_to_phys(mmu_pages) >> 4;
> +
> + reg = RGA_MMU_CTRL1 - RGA_MODE_BASE_REG;
> + dest[reg >> 2] |= 0x7 << 8;
> +}
> +
> +static void rga_cmd_set_trans_info(struct rga_ctx *ctx)
> +{
> + u32 *dest = ctx->cmdbuf_virt;
> + struct rockchip_rga *rga = ctx->rga;
> + unsigned int scale_dst_w, scale_dst_h;
> + unsigned int src_h, src_w, src_x, src_y, dst_h, dst_w,
> dst_x, dst_y;
> + union rga_src_info src_info;
> + union rga_dst_info dst_info;
> + union rga_src_x_factor x_factor;
> + union rga_src_y_factor y_factor;
> + union rga_src_vir_info src_vir_info;
> + union rga_src_act_info src_act_info;
> + union rga_dst_vir_info dst_vir_info;
> + union rga_dst_act_info dst_act_info;
> +
> + struct rga_addr_offset *dst_offset;
> + struct rga_corners_addr_offset offsets;
> + struct rga_corners_addr_offset src_offsets;
> +
> + src_h = ctx->in.crop.height;
> + src_w = ctx->in.crop.width;
> + src_x = ctx->in.crop.left;
> + src_y = ctx->in.crop.top;
> + dst_h = ctx->out.crop.height;
> + dst_w = ctx->out.crop.width;
> + dst_x = ctx->out.crop.left;
> + dst_y = ctx->out.crop.top;
> +
> + src_info.val = dest[(RGA_SRC_INFO - RGA_MODE_BASE_REG) >>
> 2];
> + dst_info.val = dest[(RGA_DST_INFO - RGA_MODE_BASE_REG) >>
> 2];
> + x_factor.val = dest[(RGA_SRC_X_FACTOR - RGA_MODE_BASE_REG)
> >> 2];
> + y_factor.val = dest[(RGA_SRC_Y_FACTOR - RGA_MODE_BASE_REG)
> >> 2];
> + src_vir_info.val = dest[(RGA_SRC_VIR_INFO -
> RGA_MODE_BASE_REG) >> 2];
> + src_act_info.val = dest[(RGA_SRC_ACT_INFO -
> RGA_MODE_BASE_REG) >> 2];
> + dst_vir_info.val = dest[(RGA_DST_VIR_INFO -
> RGA_MODE_BASE_REG) >> 2];
> + dst_act_info.val = dest[(RGA_DST_ACT_INFO -
> RGA_MODE_BASE_REG) >> 2];
> +
> + src_info.data.format = ctx->in.fmt->hw_format;
> + src_info.data.swap = ctx->in.fmt->color_swap;
> + dst_info.data.format = ctx->out.fmt->hw_format;
> + dst_info.data.swap = ctx->out.fmt->color_swap;
> +
> + if (ctx->in.fmt->hw_format >= RGA_COLOR_FMT_YUV422SP) {
> + if (ctx->out.fmt->hw_format <
> RGA_COLOR_FMT_YUV422SP)
> + src_info.data.csc_mode =
> RGA_SRC_CSC_MODE_BT601_R0;
> + }
> + if (ctx->out.fmt->hw_format >= RGA_COLOR_FMT_YUV422SP)
> + dst_info.data.csc_mode = RGA_DST_CSC_MODE_BT601_R0;
> +
> + if (ctx->op == OP_SOLID_FILL) {
> +
> + /*
> + * Configure the target color to foreground color.
> + */
> + dest[(RGA_SRC_FG_COLOR - RGA_MODE_BASE_REG) >> 2] =
> + ctx->fill_color;
> + dst_vir_info.data.vir_stride = ctx->out.stride >> 2;
> + dst_act_info.data.act_height = dst_h - 1;
> + dst_act_info.data.act_width = dst_w - 1;
> +
> + offsets =
> + rga_get_addr_offset(&ctx->out, dst_x, dst_y,
> dst_w, dst_h);
> + dst_offset = &offsets.left_top;
> +
> + goto write_dst;
> + }
> +
> + if (ctx->vflip) {
> + src_info.data.mir_mode |= RGA_SRC_MIRR_MODE_X;
> + }
> +
> + if (ctx->hflip) {
> + src_info.data.mir_mode |= RGA_SRC_MIRR_MODE_Y;
> + }
> +
> + switch (ctx->rotate) {
> + case 90:
> + src_info.data.rot_mode = RGA_SRC_ROT_MODE_90_DEGREE;
> + break;
> + case 180:
> + src_info.data.rot_mode =
> RGA_SRC_ROT_MODE_180_DEGREE;
> + break;
> + case 270:
> + src_info.data.rot_mode =
> RGA_SRC_ROT_MODE_270_DEGREE;
> + break;
> + default:
> + src_info.data.rot_mode = RGA_SRC_ROT_MODE_0_DEGREE;
> + break;
> + }
> +
> + /*
> + * Cacluate the up/down scaling mode/factor.
> + *
> + * RGA used to scale the picture first, and then rotate
> second,
> + * so we need to swap the w/h when rotate degree is 90/270.
> + */
> + if (src_info.data.rot_mode == RGA_SRC_ROT_MODE_90_DEGREE
> + || src_info.data.rot_mode ==
> RGA_SRC_ROT_MODE_270_DEGREE) {
> + if (rga->version.major == 0 || rga->version.minor ==
> 0) {
> + if (dst_w == src_h)
> + src_h -= 8;
> + if (abs(src_w - dst_h) < 16)
> + src_w -= 16;
> + }
> +
> + scale_dst_h = dst_w;
> + scale_dst_w = dst_h;
> + } else {
> + scale_dst_w = dst_w;
> + scale_dst_h = dst_h;
> + }
> +
> + if (src_w == scale_dst_w) {
> + src_info.data.hscl_mode = RGA_SRC_HSCL_MODE_NO;
> + x_factor.val = 0;
> + } else if (src_w > scale_dst_w) {
> + src_info.data.hscl_mode = RGA_SRC_HSCL_MODE_DOWN;
> + x_factor.data.down_scale_factor =
> + rga_get_scaling(src_w, scale_dst_w) + 1;
> + } else {
> + src_info.data.hscl_mode = RGA_SRC_HSCL_MODE_UP;
> + x_factor.data.up_scale_factor =
> + rga_get_scaling(src_w - 1, scale_dst_w - 1);
> + }
> +
> + if (src_h == scale_dst_h) {
> + src_info.data.vscl_mode = RGA_SRC_VSCL_MODE_NO;
> + y_factor.val = 0;
> + } else if (src_h > scale_dst_h) {
> + src_info.data.vscl_mode = RGA_SRC_VSCL_MODE_DOWN;
> + y_factor.data.down_scale_factor =
> + rga_get_scaling(src_h, scale_dst_h) + 1;
> + } else {
> + src_info.data.vscl_mode = RGA_SRC_VSCL_MODE_UP;
> + y_factor.data.up_scale_factor =
> + rga_get_scaling(src_h - 1, scale_dst_h - 1);
> + }
> +
> + /*
> + * Cacluate the framebuffer virtual strides and active size,
> + * note that the step of vir_stride / vir_width is 4 byte
> words
> + */
> + src_vir_info.data.vir_stride = ctx->in.stride >> 2;
> + src_vir_info.data.vir_width = ctx->in.stride >> 2;
> +
> + src_act_info.data.act_height = src_h - 1;
> + src_act_info.data.act_width = src_w - 1;
> +
> + dst_vir_info.data.vir_stride = ctx->out.stride >> 2;
> + dst_act_info.data.act_height = dst_h - 1;
> + dst_act_info.data.act_width = dst_w - 1;
> +
> + /*
> + * Cacluate the source framebuffer base address with offset
> pixel.
> + */
> + src_offsets = rga_get_addr_offset(&ctx->in, src_x, src_y,
> src_w, src_h);
> +
> + /*
> + * Configure the dest framebuffer base address with pixel
> offset.
> + */
> + offsets = rga_get_addr_offset(&ctx->out, dst_x, dst_y,
> dst_w, dst_h);
> + dst_offset = rga_lookup_draw_pos(&offsets,
> src_info.data.rot_mode,
> + src_info.data.mir_mode);
> +
> + dest[(RGA_SRC_Y_RGB_BASE_ADDR - RGA_MODE_BASE_REG) >> 2] =
> + src_offsets.left_top.y_off;
> + dest[(RGA_SRC_CB_BASE_ADDR - RGA_MODE_BASE_REG) >> 2] =
> + src_offsets.left_top.u_off;
> + dest[(RGA_SRC_CR_BASE_ADDR - RGA_MODE_BASE_REG) >> 2] =
> + src_offsets.left_top.v_off;
> +
> + dest[(RGA_SRC_X_FACTOR - RGA_MODE_BASE_REG) >> 2] =
> x_factor.val;
> + dest[(RGA_SRC_Y_FACTOR - RGA_MODE_BASE_REG) >> 2] =
> y_factor.val;
> + dest[(RGA_SRC_VIR_INFO - RGA_MODE_BASE_REG) >> 2] =
> src_vir_info.val;
> + dest[(RGA_SRC_ACT_INFO - RGA_MODE_BASE_REG) >> 2] =
> src_act_info.val;
> +
> + dest[(RGA_SRC_INFO - RGA_MODE_BASE_REG) >> 2] =
> src_info.val;
> +
> +write_dst:
> + dest[(RGA_DST_Y_RGB_BASE_ADDR - RGA_MODE_BASE_REG) >> 2] =
> + dst_offset->y_off;
> + dest[(RGA_DST_CB_BASE_ADDR - RGA_MODE_BASE_REG) >> 2] =
> + dst_offset->u_off;
> + dest[(RGA_DST_CR_BASE_ADDR - RGA_MODE_BASE_REG) >> 2] =
> + dst_offset->v_off;
> +
> + dest[(RGA_DST_VIR_INFO - RGA_MODE_BASE_REG) >> 2] =
> dst_vir_info.val;
> + dest[(RGA_DST_ACT_INFO - RGA_MODE_BASE_REG) >> 2] =
> dst_act_info.val;
> +
> + dest[(RGA_DST_INFO - RGA_MODE_BASE_REG) >> 2] =
> dst_info.val;
> +}
> +
> +static void rga_cmd_set_mode(struct rga_ctx *ctx)
> +{
> + u32 *dest = ctx->cmdbuf_virt;
> + union rga_mode_ctrl mode;
> +
> + mode.val = 0;
> +
> + switch (ctx->op) {
> + case OP_ALPHA_BLEND:
> + case OP_COPY:
> + mode.data.gradient_sat = 1;
> + mode.data.render = RGA_MODE_RENDER_BITBLT;
> + mode.data.bitblt = RGA_MODE_BITBLT_MODE_SRC_TO_DST;
> + break;
> + case OP_SOLID_FILL:
> + mode.data.gradient_sat = 1;
> + mode.data.render = RGA_MODE_RENDER_RECTANGLE_FILL;
> + mode.data.cf_rop4_pat = RGA_MODE_CF_ROP4_SOLID;
> + mode.data.bitblt = RGA_MODE_BITBLT_MODE_SRC_TO_DST;
> +
> + break;
> + }
> +
> + dest[(RGA_MODE_CTRL - RGA_MODE_BASE_REG) >> 2] = mode.val;
> +}
> +
> +static void rga_cmd_set_alpha_blend(struct rga_ctx *ctx)
> +{
> + u32 *dest = ctx->cmdbuf_virt;
> + union rga_alpha_ctrl0 alpha_ctrl0;
> + union rga_alpha_ctrl1 alpha_ctrl1;
> +
> + /* just expose reg to userspace */
> + alpha_ctrl0.val = ctx->alpha0;
> + alpha_ctrl1.val = ctx->alpha1;
> +
> + dest[(RGA_ALPHA_CTRL0 - RGA_MODE_BASE_REG) >> 2] =
> alpha_ctrl0.val;
> + dest[(RGA_ALPHA_CTRL1 - RGA_MODE_BASE_REG) >> 2] =
> alpha_ctrl1.val;
> +}
> +
> +void rga_cmd_set(struct rga_ctx *ctx, void *src_mmu_pages, void
> *dst_mmu_pages)
> +{
> + struct rockchip_rga *rga = ctx->rga;
> +
> + memset(ctx->cmdbuf_virt, 0, RGA_CMDBUF_SIZE * 4);
> +
> + if (ctx->op != OP_SOLID_FILL) {
> + rga_cmd_set_src_addr(ctx, src_mmu_pages);
> + }
> + rga_cmd_set_dst_addr(ctx, dst_mmu_pages);
> + rga_cmd_set_mode(ctx);
> +
> + if (ctx->op == OP_ALPHA_BLEND) {
> + /*
> + * Due to hardware bug,
> + * src1 mmu also should be configured when use alpha
> blending.
> + */
> + rga_cmd_set_src1_addr(ctx, src_mmu_pages);
> + rga_cmd_set_alpha_blend(ctx);
> + }
> +
> + rga_cmd_set_trans_info(ctx);
> +
> + rga_write(rga, RGA_CMD_BASE, ctx->cmdbuf_phy);
> +}
> +
> +void rga_write(struct rockchip_rga *rga, u32 reg, u32 value)
> +{
> + writel(value, rga->regs + reg);
> +}
> +
> +u32 rga_read(struct rockchip_rga *rga, u32 reg)
> +{
> + return readl(rga->regs + reg);
> +}
> +
> +void rga_mod(struct rockchip_rga *rga, u32 reg, u32 val, u32 mask)
> +{
> + u32 temp = rga_read(rga, reg) & ~(mask);
> +
> + temp |= val & mask;
> + rga_write(rga, reg, temp);
> +}
> +
> +void rga_start(struct rockchip_rga *rga)
> +{
> + struct rga_ctx *ctx = rga->curr;
> +
> + /* sync CMD buf for RGA */
> + dma_sync_single_for_device(rga->dev, ctx->cmdbuf_phy,
> + PAGE_SIZE, DMA_BIDIRECTIONAL);
> +
> + rga_write(rga, RGA_SYS_CTRL, 0x00);
> +
> + rga_write(rga, RGA_SYS_CTRL, 0x22);
> +
> + rga_write(rga, RGA_INT, 0x600);
> +
> + rga_write(rga, RGA_CMD_CTRL, 0x1);
> +}
> diff --git a/drivers/media/platform/rockchip-rga/rga-hw.h
> b/drivers/media/platform/rockchip-rga/rga-hw.h
> new file mode 100644
> index 0000000..783ea64e
> --- /dev/null
> +++ b/drivers/media/platform/rockchip-rga/rga-hw.h
> @@ -0,0 +1,434 @@
> +/*
> + * Copyright (C) Fuzhou Rockchip Electronics Co.Ltd
> + * Author: Jacob Chen <jacob-chen@...wrt.com>
> + *
> + * This software is licensed under the terms of the GNU General
> Public
> + * License version 2, as published by the Free Software Foundation,
> and
> + * may be copied, distributed, and modified under those terms.
> + *
> + * This program is distributed in the hope that it will be useful,
> + * but WITHOUT ANY WARRANTY; without even the implied warranty of
> + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
> + * GNU General Public License for more details.
> + */
> +#ifndef __RGA_HW_H__
> +#define __RGA_HW_H__
> +
> +#define RGA_CMDBUF_SIZE 0x20
> +
> +/* Hardware limits */
> +#define MAX_WIDTH 8192
> +#define MAX_HEIGHT 8192
> +
> +#define MIN_WIDTH 34
> +#define MIN_HEIGHT 34
> +
> +#define DEFAULT_WIDTH 100
> +#define DEFAULT_HEIGHT 100
> +
> +#define RGA_TIMEOUT 500
> +
> +/* Registers adress */
> +#define RGA_SYS_CTRL 0x0000
> +#define RGA_CMD_CTRL 0x0004
> +#define RGA_CMD_BASE 0x0008
> +#define RGA_INT 0x0010
> +#define RGA_MMU_CTRL0 0x0014
> +#define RGA_VERSION_INFO 0x0028
> +
> +#define RGA_MODE_BASE_REG 0x0100
> +#define RGA_MODE_MAX_REG 0x017C
> +
> +#define RGA_MODE_CTRL 0x0100
> +#define RGA_SRC_INFO 0x0104
> +#define RGA_SRC_Y_RGB_BASE_ADDR 0x0108
> +#define RGA_SRC_CB_BASE_ADDR 0x010c
> +#define RGA_SRC_CR_BASE_ADDR 0x0110
> +#define RGA_SRC1_RGB_BASE_ADDR 0x0114
> +#define RGA_SRC_VIR_INFO 0x0118
> +#define RGA_SRC_ACT_INFO 0x011c
> +#define RGA_SRC_X_FACTOR 0x0120
> +#define RGA_SRC_Y_FACTOR 0x0124
> +#define RGA_SRC_BG_COLOR 0x0128
> +#define RGA_SRC_FG_COLOR 0x012c
> +#define RGA_SRC_TR_COLOR0 0x0130
> +#define RGA_SRC_TR_COLOR1 0x0134
> +
> +#define RGA_DST_INFO 0x0138
> +#define RGA_DST_Y_RGB_BASE_ADDR 0x013c
> +#define RGA_DST_CB_BASE_ADDR 0x0140
> +#define RGA_DST_CR_BASE_ADDR 0x0144
> +#define RGA_DST_VIR_INFO 0x0148
> +#define RGA_DST_ACT_INFO 0x014c
> +
> +#define RGA_ALPHA_CTRL0 0x0150
> +#define RGA_ALPHA_CTRL1 0x0154
> +#define RGA_FADING_CTRL 0x0158
> +#define RGA_PAT_CON 0x015c
> +#define RGA_ROP_CON0 0x0160
> +#define RGA_ROP_CON1 0x0164
> +#define RGA_MASK_BASE 0x0168
> +
> +#define RGA_MMU_CTRL1 0x016C
> +#define RGA_MMU_SRC_BASE 0x0170
> +#define RGA_MMU_SRC1_BASE 0x0174
> +#define RGA_MMU_DST_BASE 0x0178
> +
> +/* Registers value */
> +#define RGA_MODE_RENDER_BITBLT 0
> +#define RGA_MODE_RENDER_COLOR_PALETTE 1
> +#define RGA_MODE_RENDER_RECTANGLE_FILL 2
> +#define RGA_MODE_RENDER_UPDATE_PALETTE_LUT_RAM 3
> +
> +#define RGA_MODE_BITBLT_MODE_SRC_TO_DST 0
> +#define RGA_MODE_BITBLT_MODE_SRC_SRC1_TO_DST 1
> +
> +#define RGA_MODE_CF_ROP4_SOLID 0
> +#define RGA_MODE_CF_ROP4_PATTERN 1
> +
> +#define RGA_COLOR_FMT_ABGR8888 0
> +#define RGA_COLOR_FMT_XBGR8888 1
> +#define RGA_COLOR_FMT_BGR888 2
> +#define RGA_COLOR_FMT_BGR565 4
> +#define RGA_COLOR_FMT_ABGR1555 5
> +#define RGA_COLOR_FMT_ABGR4444 6
> +#define RGA_COLOR_FMT_YUV422SP 8
> +#define RGA_COLOR_FMT_YUV422P 9
> +#define RGA_COLOR_FMT_YUV420SP 10
> +#define RGA_COLOR_FMT_YUV420P 11
> +/* SRC_COLOR Palette */
> +#define RGA_COLOR_FMT_CP_1BPP 12
> +#define RGA_COLOR_FMT_CP_2BPP 13
> +#define RGA_COLOR_FMT_CP_4BPP 14
> +#define RGA_COLOR_FMT_CP_8BPP 15
> +#define RGA_COLOR_FMT_MASK 15
> +
> +#define RGA_COLOR_NONE_SWAP 0
> +#define RGA_COLOR_RB_SWAP 1
> +#define RGA_COLOR_ALPHA_SWAP 2
> +#define RGA_COLOR_UV_SWAP 4
> +
> +#define RGA_SRC_CSC_MODE_BYPASS 0
> +#define RGA_SRC_CSC_MODE_BT601_R0 1
> +#define RGA_SRC_CSC_MODE_BT601_R1 2
> +#define RGA_SRC_CSC_MODE_BT709_R0 3
> +#define RGA_SRC_CSC_MODE_BT709_R1 4
> +
> +#define RGA_SRC_ROT_MODE_0_DEGREE 0
> +#define RGA_SRC_ROT_MODE_90_DEGREE 1
> +#define RGA_SRC_ROT_MODE_180_DEGREE 2
> +#define RGA_SRC_ROT_MODE_270_DEGREE 3
> +
> +#define RGA_SRC_MIRR_MODE_NO 0
> +#define RGA_SRC_MIRR_MODE_X 1
> +#define RGA_SRC_MIRR_MODE_Y 2
> +#define RGA_SRC_MIRR_MODE_X_Y 3
> +
> +#define RGA_SRC_HSCL_MODE_NO 0
> +#define RGA_SRC_HSCL_MODE_DOWN 1
> +#define RGA_SRC_HSCL_MODE_UP 2
> +
> +#define RGA_SRC_VSCL_MODE_NO 0
> +#define RGA_SRC_VSCL_MODE_DOWN 1
> +#define RGA_SRC_VSCL_MODE_UP 2
> +
> +#define RGA_SRC_TRANS_ENABLE_R 1
> +#define RGA_SRC_TRANS_ENABLE_G 2
> +#define RGA_SRC_TRANS_ENABLE_B 4
> +#define RGA_SRC_TRANS_ENABLE_A 8
> +
> +#define RGA_SRC_BIC_COE_SELEC_CATROM 0
> +#define RGA_SRC_BIC_COE_SELEC_MITCHELL 1
> +#define RGA_SRC_BIC_COE_SELEC_HERMITE 2
> +#define RGA_SRC_BIC_COE_SELEC_BSPLINE 3
> +
> +#define RGA_DST_DITHER_MODE_888_TO_666 0
> +#define RGA_DST_DITHER_MODE_888_TO_565 1
> +#define RGA_DST_DITHER_MODE_888_TO_555 2
> +#define RGA_DST_DITHER_MODE_888_TO_444 3
> +
> +#define RGA_DST_CSC_MODE_BYPASS 0
> +#define RGA_DST_CSC_MODE_BT601_R0 1
> +#define RGA_DST_CSC_MODE_BT601_R1 2
> +#define RGA_DST_CSC_MODE_BT709_R0 3
> +
> +#define RGA_ALPHA_ROP_MODE_2 0
> +#define RGA_ALPHA_ROP_MODE_3 1
> +#define RGA_ALPHA_ROP_MODE_4 2
> +
> +#define RGA_ALPHA_SELECT_ALPHA 1
> +#define RGA_ALPHA_SELECT_ROP 2
> +
> +#define RGA_ALPHA_NORMAL 0
> +#define RGA_ALPHA_REVERSE 1
> +
> +#define RGA_ALPHA_BLEND_GLOBAL 0
> +#define RGA_ALPHA_BLEND_PIXEL 1
> +#define RGA_ALPHA_BLEND_MULTIPLY 2
> +
> +#define RGA_ALPHA_CAL_CUT 0
> +#define RGA_ALPHA_CAL_NORMAL 1
> +
> +#define RGA_ALPHA_FACTOR_ZERO 0
> +#define RGA_ALPHA_FACTOR_MAX 1
> +#define RGA_ALPHA_FACTOR_NORMAL 2
> +#define RGA_ALPHA_FACTOR_REVERSE 3
> +#define RGA_ALPHA_FACTOR_OTHER 4
> +
> +#define RGA_ALPHA_COLOR_PIXEL 0
> +#define RGA_ALPHA_COLOR_MULTIPLY_CAL 1
> +
> +/* Registers union */
> +union rga_mode_ctrl {
> + unsigned int val;
> + struct {
> + /* [0:2] */
> + unsigned int render:3;
> + /* [3:6] */
> + unsigned int bitblt:1;
> + unsigned int cf_rop4_pat:1;
> + unsigned int alpha_zero_key:1;
> + unsigned int gradient_sat:1;
> + /* [7:31] */
> + unsigned int reserved:25;
> + } data;
> +};
> +
> +union rga_src_info {
> + unsigned int val;
> + struct {
> + /* [0:3] */
> + unsigned int format:4;
> + /* [4:7] */
> + unsigned int swap:3;
> + unsigned int cp_endian:1;
> + /* [8:17] */
> + unsigned int csc_mode:2;
> + unsigned int rot_mode:2;
> + unsigned int mir_mode:2;
> + unsigned int hscl_mode:2;
> + unsigned int vscl_mode:2;
> + /* [18:22] */
> + unsigned int trans_mode:1;
> + unsigned int trans_enable:4;
> + /* [23:25] */
> + unsigned int dither_up_en:1;
> + unsigned int bic_coe_sel:2;
> + /* [26:31] */
> + unsigned int reserved:6;
> + } data;
> +};
> +
> +union rga_src_vir_info {
> + unsigned int val;
> + struct {
> + /* [0:15] */
> + unsigned int vir_width:15;
> + unsigned int reserved:1;
> + /* [16:25] */
> + unsigned int vir_stride:10;
> + /* [26:31] */
> + unsigned int reserved1:6;
> + } data;
> +};
> +
> +union rga_src_act_info {
> + unsigned int val;
> + struct {
> + /* [0:15] */
> + unsigned int act_width:13;
> + unsigned int reserved:3;
> + /* [16:31] */
> + unsigned int act_height:13;
> + unsigned int reserved1:3;
> + } data;
> +};
> +
> +union rga_src_x_factor {
> + unsigned int val;
> + struct {
> + /* [0:15] */
> + unsigned int down_scale_factor:16;
> + /* [16:31] */
> + unsigned int up_scale_factor:16;
> + } data;
> +};
> +
> +union rga_src_y_factor {
> + unsigned int val;
> + struct {
> + /* [0:15] */
> + unsigned int down_scale_factor:16;
> + /* [16:31] */
> + unsigned int up_scale_factor:16;
> + } data;
> +};
> +
> +/* Alpha / Red / Green / Blue */
> +union rga_src_cp_gr_color {
> + unsigned int val;
> + struct {
> + /* [0:15] */
> + unsigned int gradient_x:16;
> + /* [16:31] */
> + unsigned int gradient_y:16;
> + } data;
> +};
> +
> +union rga_src_transparency_color0 {
> + unsigned int val;
> + struct {
> + /* [0:7] */
> + unsigned int trans_rmin:8;
> + /* [8:15] */
> + unsigned int trans_gmin:8;
> + /* [16:23] */
> + unsigned int trans_bmin:8;
> + /* [24:31] */
> + unsigned int trans_amin:8;
> + } data;
> +};
> +
> +union rga_src_transparency_color1 {
> + unsigned int val;
> + struct {
> + /* [0:7] */
> + unsigned int trans_rmax:8;
> + /* [8:15] */
> + unsigned int trans_gmax:8;
> + /* [16:23] */
> + unsigned int trans_bmax:8;
> + /* [24:31] */
> + unsigned int trans_amax:8;
> + } data;
> +};
> +
> +union rga_dst_info {
> + unsigned int val;
> + struct {
> + /* [0:3] */
> + unsigned int format:4;
> + /* [4:6] */
> + unsigned int swap:3;
> + /* [7:9] */
> + unsigned int src1_format:3;
> + /* [10:11] */
> + unsigned int src1_swap:2;
> + /* [12:15] */
> + unsigned int dither_up_en:1;
> + unsigned int dither_down_en:1;
> + unsigned int dither_down_mode:2;
> + /* [16:18] */
> + unsigned int csc_mode:2;
> + unsigned int csc_clip:1;
> + /* [19:31] */
> + unsigned int reserved:13;
> + } data;
> +};
> +
> +union rga_dst_vir_info {
> + unsigned int val;
> + struct {
> + /* [0:15] */
> + unsigned int vir_stride:15;
> + unsigned int reserved:1;
> + /* [16:31] */
> + unsigned int src1_vir_stride:15;
> + unsigned int reserved1:1;
> + } data;
> +};
> +
> +union rga_dst_act_info {
> + unsigned int val;
> + struct {
> + /* [0:15] */
> + unsigned int act_width:12;
> + unsigned int reserved:4;
> + /* [16:31] */
> + unsigned int act_height:12;
> + unsigned int reserved1:4;
> + } data;
> +};
> +
> +union rga_alpha_ctrl0 {
> + unsigned int val;
> + struct {
> + /* [0:3] */
> + unsigned int rop_en:1;
> + unsigned int rop_select:1;
> + unsigned int rop_mode:2;
> + /* [4:11] */
> + unsigned int src_fading_val:8;
> + /* [12:20] */
> + unsigned int dst_fading_val:8;
> + unsigned int mask_endian:1;
> + /* [21:31] */
> + unsigned int reserved:11;
> + } data;
> +};
> +
> +union rga_alpha_ctrl1 {
> + unsigned int val;
> + struct {
> + /* [0:1] */
> + unsigned int dst_color_m0:1;
> + unsigned int src_color_m0:1;
> + /* [2:7] */
> + unsigned int dst_factor_m0:3;
> + unsigned int src_factor_m0:3;
> + /* [8:9] */
> + unsigned int dst_alpha_cal_m0:1;
> + unsigned int src_alpha_cal_m0:1;
> + /* [10:13] */
> + unsigned int dst_blend_m0:2;
> + unsigned int src_blend_m0:2;
> + /* [14:15] */
> + unsigned int dst_alpha_m0:1;
> + unsigned int src_alpha_m0:1;
> + /* [16:21] */
> + unsigned int dst_factor_m1:3;
> + unsigned int src_factor_m1:3;
> + /* [22:23] */
> + unsigned int dst_alpha_cal_m1:1;
> + unsigned int src_alpha_cal_m1:1;
> + /* [24:27] */
> + unsigned int dst_blend_m1:2;
> + unsigned int src_blend_m1:2;
> + /* [28:29] */
> + unsigned int dst_alpha_m1:1;
> + unsigned int src_alpha_m1:1;
> + /* [30:31] */
> + unsigned int reserved:2;
> + } data;
> +};
> +
> +union rga_fading_ctrl {
> + unsigned int val;
> + struct {
> + /* [0:7] */
> + unsigned int fading_offset_r:8;
> + /* [8:15] */
> + unsigned int fading_offset_g:8;
> + /* [16:23] */
> + unsigned int fading_offset_b:8;
> + /* [24:31] */
> + unsigned int fading_en:1;
> + unsigned int reserved:7;
> + } data;
> +};
> +
> +union rga_pat_con {
> + unsigned int val;
> + struct {
> + /* [0:7] */
> + unsigned int width:8;
> + /* [8:15] */
> + unsigned int height:8;
> + /* [16:23] */
> + unsigned int offset_x:8;
> + /* [24:31] */
> + unsigned int offset_y:8;
> + } data;
> +};
> +
> +#endif
> diff --git a/drivers/media/platform/rockchip-rga/rga.c
> b/drivers/media/platform/rockchip-rga/rga.c
> new file mode 100644
> index 0000000..7292007
> --- /dev/null
> +++ b/drivers/media/platform/rockchip-rga/rga.c
> @@ -0,0 +1,979 @@
> +/*
> + * Copyright (C) Fuzhou Rockchip Electronics Co.Ltd
> + * Author: Jacob Chen <jacob-chen@...wrt.com>
> + *
> + * This software is licensed under the terms of the GNU General
> Public
> + * License version 2, as published by the Free Software Foundation,
> and
> + * may be copied, distributed, and modified under those terms.
> + *
> + * This program is distributed in the hope that it will be useful,
> + * but WITHOUT ANY WARRANTY; without even the implied warranty of
> + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
> + * GNU General Public License for more details.
> + */
> +
> +#include <linux/clk.h>
> +#include <linux/debugfs.h>
> +#include <linux/delay.h>
> +#include <linux/fs.h>
> +#include <linux/interrupt.h>
> +#include <linux/module.h>
> +#include <linux/of.h>
> +#include <linux/pm_runtime.h>
> +#include <linux/reset.h>
> +#include <linux/sched.h>
> +#include <linux/slab.h>
> +#include <linux/timer.h>
> +
> +#include <linux/platform_device.h>
> +#include <media/v4l2-device.h>
> +#include <media/v4l2-ioctl.h>
> +#include <media/v4l2-mem2mem.h>
> +#include <media/videobuf2-dma-sg.h>
> +#include <media/videobuf2-v4l2.h>
> +
> +#include "rga-hw.h"
> +#include "rga.h"
> +
> +static void job_abort(void *prv)
> +{
> + struct rga_ctx *ctx = prv;
> + struct rockchip_rga *rga = ctx->rga;
> +
> + if (rga->curr == NULL) /* No job currently running */
> + return;
> +
> + wait_event_timeout(rga->irq_queue,
> + rga->curr == NULL,
> msecs_to_jiffies(RGA_TIMEOUT));
> +}
> +
> +static void device_run(void *prv)
> +{
> + struct rga_ctx *ctx = prv;
> + struct rockchip_rga *rga = ctx->rga;
> + struct vb2_buffer *src, *dst;
> + unsigned long flags;
> +
> + spin_lock_irqsave(&rga->ctrl_lock, flags);
> +
> + rga->curr = ctx;
> +
> + src = v4l2_m2m_next_src_buf(ctx->fh.m2m_ctx);
> + dst = v4l2_m2m_next_dst_buf(ctx->fh.m2m_ctx);
> +
> + rga_cmd_set(ctx, rga_buf_find_page(src),
> rga_buf_find_page(dst));
> +
> + rga_start(rga);
> +
> + spin_unlock_irqrestore(&rga->ctrl_lock, flags);
> +}
> +
> +static irqreturn_t rga_isr(int irq, void *prv)
> +{
> + struct rockchip_rga *rga = prv;
> + int intr;
> +
> + intr = rga_read(rga, RGA_INT) & 0xf;
> +
> + rga_mod(rga, RGA_INT, intr << 4, 0xf << 4);
> +
> + if (intr & 0x04) {
> + struct vb2_v4l2_buffer *src, *dst;
> + struct rga_ctx *ctx = rga->curr;
> +
> + BUG_ON(ctx == NULL);
> +
> + rga->curr = NULL;
> +
> + src = v4l2_m2m_src_buf_remove(ctx->fh.m2m_ctx);
> + dst = v4l2_m2m_dst_buf_remove(ctx->fh.m2m_ctx);
> +
> + BUG_ON(src == NULL);
> + BUG_ON(dst == NULL);
> +
> + 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;
> +
> + v4l2_m2m_buf_done(src, VB2_BUF_STATE_DONE);
> + v4l2_m2m_buf_done(dst, VB2_BUF_STATE_DONE);
> + v4l2_m2m_job_finish(rga->m2m_dev, ctx->fh.m2m_ctx);
> +
> + wake_up(&rga->irq_queue);
> + }
> +
> + return IRQ_HANDLED;
> +}
> +
> +static struct v4l2_m2m_ops rga_m2m_ops = {
> + .device_run = device_run,
> + .job_abort = job_abort,
> +};
> +
> +static int
> +queue_init(void *priv, struct vb2_queue *src_vq, struct vb2_queue
> *dst_vq)
> +{
> + struct rga_ctx *ctx = priv;
> + int ret;
> +
> + src_vq->type = V4L2_BUF_TYPE_VIDEO_OUTPUT;
> + src_vq->io_modes = VB2_MMAP | VB2_USERPTR | VB2_DMABUF;
> + src_vq->drv_priv = ctx;
> + src_vq->ops = &rga_qops;
> + src_vq->mem_ops = &vb2_dma_sg_memops;
> + src_vq->buf_struct_size = sizeof(struct v4l2_m2m_buffer);
> + src_vq->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_COPY;
> + src_vq->lock = &ctx->rga->mutex;
> + src_vq->dev = ctx->rga->v4l2_dev.dev;
> +
> + ret = vb2_queue_init(src_vq);
> + if (ret)
> + return ret;
> +
> + dst_vq->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
> + dst_vq->io_modes = VB2_MMAP | VB2_USERPTR | VB2_DMABUF;
> + dst_vq->drv_priv = ctx;
> + dst_vq->ops = &rga_qops;
> + dst_vq->mem_ops = &vb2_dma_sg_memops;
> + dst_vq->buf_struct_size = sizeof(struct v4l2_m2m_buffer);
> + dst_vq->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_COPY;
> + dst_vq->lock = &ctx->rga->mutex;
> + dst_vq->dev = ctx->rga->v4l2_dev.dev;
> +
> + return vb2_queue_init(dst_vq);
> +}
> +
> +static int rga_s_ctrl(struct v4l2_ctrl *ctrl)
> +{
> + struct rga_ctx *ctx = container_of(ctrl->handler, struct
> rga_ctx,
> + ctrl_handler);
> + unsigned long flags;
> +
> + spin_lock_irqsave(&ctx->rga->ctrl_lock, flags);
> + switch (ctrl->id) {
> + case V4L2_CID_RGA_OP:
> + ctx->op = ctrl->val;
> + break;
> + case V4L2_CID_HFLIP:
> + ctx->hflip = ctrl->val;
> + break;
> + case V4L2_CID_VFLIP:
> + ctx->vflip = ctrl->val;
> + break;
> + case V4L2_CID_ROTATE:
> + ctx->rotate = ctrl->val;
> + break;
> + case V4L2_CID_BG_COLOR:
> + ctx->fill_color = ctrl->val;
> + break;
> + case V4L2_CID_RGA_ALHPA_REG0:
> + ctx->alpha0 = ctrl->val;
> + break;
> + case V4L2_CID_RGA_ALHPA_REG1:
> + ctx->alpha1 = ctrl->val;
> + break;
> + }
> + spin_unlock_irqrestore(&ctx->rga->ctrl_lock, flags);
> + return 0;
> +}
> +
> +static const struct v4l2_ctrl_ops rga_ctrl_ops = {
> + .s_ctrl = rga_s_ctrl,
> +};
> +
> +static const struct v4l2_ctrl_config op_control = {
> + .ops = &rga_ctrl_ops,
> + .id = V4L2_CID_RGA_OP,
> + .name = "Transform operation",
> + .type = V4L2_CTRL_TYPE_INTEGER,
> + .min = 0x0,
> + .max = 0xf,
> + .step = 1,
> + .def = 0,
> +};
> +
> +static const struct v4l2_ctrl_config alpha0_control = {
> + .ops = &rga_ctrl_ops,
> + .id = V4L2_CID_RGA_ALHPA_REG0,
> + .name = "Exposed alpha blending register 0",
> + .type = V4L2_CTRL_TYPE_INTEGER,
> + .min = 0x0,
> + .max = 0xffffffff,
> + .step = 1,
> + .def = 0,
> +};
> +
> +static const struct v4l2_ctrl_config alpha1_control = {
> + .ops = &rga_ctrl_ops,
> + .id = V4L2_CID_RGA_ALHPA_REG1,
> + .name = "Exposed alpha blending register 1",
> + .type = V4L2_CTRL_TYPE_INTEGER,
> + .min = 0x0,
> + .max = 0xffffffff,
> + .step = 1,
> + .def = 0,
> +};
> +
> +static int rga_setup_ctrls(struct rga_ctx *ctx)
> +{
> + struct rockchip_rga *rga = ctx->rga;
> +
> + v4l2_ctrl_handler_init(&ctx->ctrl_handler, 7);
> +
> + v4l2_ctrl_new_std(&ctx->ctrl_handler, &rga_ctrl_ops,
> + V4L2_CID_HFLIP, 0, 1, 1, 0);
> +
> + v4l2_ctrl_new_std(&ctx->ctrl_handler, &rga_ctrl_ops,
> + V4L2_CID_VFLIP, 0, 1, 1, 0);
> +
> + v4l2_ctrl_new_std(&ctx->ctrl_handler, &rga_ctrl_ops,
> + V4L2_CID_ROTATE, 0, 270, 90, 0);
> +
> + v4l2_ctrl_new_std(&ctx->ctrl_handler, &rga_ctrl_ops,
> + V4L2_CID_BG_COLOR, 0, 0xffffffff, 1, 0);
> +
> + v4l2_ctrl_new_custom(&ctx->ctrl_handler, &op_control, NULL);
> + v4l2_ctrl_new_custom(&ctx->ctrl_handler, &alpha0_control,
> NULL);
> + v4l2_ctrl_new_custom(&ctx->ctrl_handler, &alpha1_control,
> NULL);
> +
> + if (ctx->ctrl_handler.error) {
> + int err = ctx->ctrl_handler.error;
> + v4l2_err(&rga->v4l2_dev, "%s failed\n", __func__);
> + v4l2_ctrl_handler_free(&ctx->ctrl_handler);
> + return err;
> + }
> +
> + return 0;
> +}
> +
> +struct rga_fmt formats[] = {
> + {
> + .name = "ARGB_8888",
> + .fourcc = V4L2_PIX_FMT_ARGB32,
> + .color_swap = RGA_COLOR_RB_SWAP,
> + .hw_format = RGA_COLOR_FMT_ABGR8888,
> + .depth = 32,
> + .uv_factor = 1,
> + .y_div = 1,
> + .x_div = 1,
> + },
> + {
> + .name = "XRGB_8888",
> + .fourcc = V4L2_PIX_FMT_XRGB32,
> + .color_swap = RGA_COLOR_RB_SWAP,
> + .hw_format = RGA_COLOR_FMT_XBGR8888,
> + .depth = 32,
> + .uv_factor = 1,
> + .y_div = 1,
> + .x_div = 1,
> + },
> + {
> + .name = "BGRA_8888",
> + .fourcc = V4L2_PIX_FMT_ABGR32,
> + .color_swap = RGA_COLOR_ALPHA_SWAP,
> + .hw_format = RGA_COLOR_FMT_ABGR8888,
> + .depth = 32,
> + .uv_factor = 1,
> + .y_div = 1,
> + .x_div = 1,
> + },
> + {
> + .name = "BGRX_8888",
> + .fourcc = V4L2_PIX_FMT_XBGR32,
> + .color_swap = RGA_COLOR_ALPHA_SWAP,
> + .hw_format = RGA_COLOR_FMT_XBGR8888,
> + .depth = 32,
> + .uv_factor = 1,
> + .y_div = 1,
> + .x_div = 1,
> + },
> + {
> + .name = "RGB_888",
> + .fourcc = V4L2_PIX_FMT_RGB24,
> + .color_swap = RGA_COLOR_RB_SWAP,
> + .hw_format = RGA_COLOR_FMT_BGR888,
> + .depth = 24,
> + .uv_factor = 1,
> + .y_div = 1,
> + .x_div = 1,
> + },
> + {
> + .name = "ARGB_444",
> + .fourcc = V4L2_PIX_FMT_ARGB444,
> + .color_swap = RGA_COLOR_RB_SWAP,
> + .hw_format = RGA_COLOR_FMT_ABGR4444,
> + .depth = 16,
> + .uv_factor = 1,
> + .y_div = 1,
> + .x_div = 1,
> + },
> + {
> + .name = "ARGB_1555",
> + .fourcc = V4L2_PIX_FMT_ARGB555,
> + .color_swap = RGA_COLOR_RB_SWAP,
> + .hw_format = RGA_COLOR_FMT_ABGR1555,
> + .depth = 16,
> + .uv_factor = 1,
> + .y_div = 1,
> + .x_div = 1,
> + },
> + {
> + .name = "RGB_565",
> + .fourcc = V4L2_PIX_FMT_RGB565,
> + .color_swap = RGA_COLOR_RB_SWAP,
> + .hw_format = RGA_COLOR_FMT_BGR565,
> + .depth = 16,
> + .uv_factor = 1,
> + .y_div = 1,
> + .x_div = 1,
> + },
> + {
> + .name = "NV_21",
> + .fourcc = V4L2_PIX_FMT_NV21,
> + .color_swap = RGA_COLOR_UV_SWAP,
> + .hw_format = RGA_COLOR_FMT_YUV420SP,
> + .depth = 12,
> + .uv_factor = 4,
> + .y_div = 2,
> + .x_div = 1,
> + },
> + {
> + .name = "NV_61",
> + .fourcc = V4L2_PIX_FMT_NV61,
> + .color_swap = RGA_COLOR_UV_SWAP,
> + .hw_format = RGA_COLOR_FMT_YUV422SP,
> + .depth = 16,
> + .uv_factor = 2,
> + .y_div = 1,
> + .x_div = 1,
> + },
> + {
> + .name = "NV_12",
> + .fourcc = V4L2_PIX_FMT_NV12,
> + .color_swap = RGA_COLOR_NONE_SWAP,
> + .hw_format = RGA_COLOR_FMT_YUV420SP,
> + .depth = 12,
> + .uv_factor = 4,
> + .y_div = 2,
> + .x_div = 1,
> + },
> + {
> + .name = "NV_16",
> + .fourcc = V4L2_PIX_FMT_NV16,
> + .color_swap = RGA_COLOR_NONE_SWAP,
> + .hw_format = RGA_COLOR_FMT_YUV422SP,
> + .depth = 16,
> + .uv_factor = 2,
> + .y_div = 1,
> + .x_div = 1,
> + },
> + {
> + .name = "YUV_420",
> + .fourcc = V4L2_PIX_FMT_YUV420,
> + .color_swap = RGA_COLOR_NONE_SWAP,
> + .hw_format = RGA_COLOR_FMT_YUV420P,
> + .depth = 12,
> + .uv_factor = 4,
> + .y_div = 2,
> + .x_div = 2,
> + },
> + {
> + .name = "YUV_422",
> + .fourcc = V4L2_PIX_FMT_YUV422P,
> + .color_swap = RGA_COLOR_NONE_SWAP,
> + .hw_format = RGA_COLOR_FMT_YUV422P,
> + .depth = 16,
> + .uv_factor = 2,
> + .y_div = 1,
> + .x_div = 2,
> + },
> +};
> +
> +#define NUM_FORMATS ARRAY_SIZE(formats)
> +
> +struct rga_fmt *rga_fmt_find(struct v4l2_format *f)
> +{
> + unsigned int i;
> + for (i = 0; i < NUM_FORMATS; i++) {
> + if (formats[i].fourcc == f->fmt.pix.pixelformat)
> + return &formats[i];
> + }
> + return NULL;
> +}
> +
> +static struct rga_frame def_frame = {
> + .width = DEFAULT_WIDTH,
> + .height = DEFAULT_HEIGHT,
> + .crop.left = 0,
> + .crop.top = 0,
> + .crop.width = DEFAULT_WIDTH,
> + .crop.height = DEFAULT_HEIGHT,
> + .fmt = &formats[0],
> +};
> +
> +struct rga_frame *rga_get_frame(struct rga_ctx *ctx, enum
> v4l2_buf_type type)
> +{
> + switch (type) {
> + case V4L2_BUF_TYPE_VIDEO_OUTPUT:
> + return &ctx->in;
> + case V4L2_BUF_TYPE_VIDEO_CAPTURE:
> + return &ctx->out;
> + default:
> + return ERR_PTR(-EINVAL);
> + }
> +}
> +
> +static int rga_open(struct file *file)
> +{
> + struct rockchip_rga *rga = video_drvdata(file);
> + struct rga_ctx *ctx = NULL;
> + int ret = 0;
> +
> + ctx = kzalloc(sizeof(*ctx), GFP_KERNEL);
> + if (!ctx)
> + return -ENOMEM;
> + ctx->rga = rga;
> + /* Set default formats */
> + ctx->in = def_frame;
> + ctx->out = def_frame;
> +
> + if (mutex_lock_interruptible(&rga->mutex)) {
> + kfree(ctx);
> + return -ERESTARTSYS;
> + }
> + ctx->fh.m2m_ctx = v4l2_m2m_ctx_init(rga->m2m_dev, ctx,
> &queue_init);
> + if (IS_ERR(ctx->fh.m2m_ctx)) {
> + ret = PTR_ERR(ctx->fh.m2m_ctx);
> + mutex_unlock(&rga->mutex);
> + kfree(ctx);
> + return ret;
> + }
> + v4l2_fh_init(&ctx->fh, video_devdata(file));
> + file->private_data = &ctx->fh;
> + v4l2_fh_add(&ctx->fh);
> +
> + rga_setup_ctrls(ctx);
> +
> + /* Write the default values to the ctx struct */
> + v4l2_ctrl_handler_setup(&ctx->ctrl_handler);
> +
> + ctx->fh.ctrl_handler = &ctx->ctrl_handler;
> + mutex_unlock(&rga->mutex);
> +
> + /* Create CMD buffer */
> + ctx->cmdbuf_virt = dma_alloc_attrs(rga->dev,
> RGA_CMDBUF_SIZE,
> + &ctx->cmdbuf_phy,
> GFP_KERNEL,
> + DMA_ATTR_WRITE_COMBINE);
> +
> + /* Init RGA private buffer list */
> + INIT_LIST_HEAD(&ctx->buffers_list);
> +
> + pm_runtime_get_sync(rga->dev);
> +
> + v4l2_info(&rga->v4l2_dev, "instance opened\n");
> + return 0;
> +}
> +
> +static int rga_release(struct file *file)
> +{
> + struct rockchip_rga *rga = video_drvdata(file);
> + struct rga_ctx *ctx =
> + container_of(file->private_data, struct rga_ctx, fh);
> +
> + pm_runtime_put(rga->dev);
> + v4l2_m2m_ctx_release(ctx->fh.m2m_ctx);
> + if (!list_empty(&ctx->buffers_list)) {
> + v4l2_info(&rga->v4l2_dev, "close with unreleased
> buffers\n");
> + rga_buf_clean(ctx);
> + }
> + v4l2_ctrl_handler_free(&ctx->ctrl_handler);
> + v4l2_fh_del(&ctx->fh);
> + v4l2_fh_exit(&ctx->fh);
> + kfree(ctx);
> + v4l2_info(&rga->v4l2_dev, "instance closed\n");
> + return 0;
> +}
> +
> +static const struct v4l2_file_operations rga_fops = {
> + .owner = THIS_MODULE,
> + .open = rga_open,
> + .release = rga_release,
> + .poll = v4l2_m2m_fop_poll,
> + .unlocked_ioctl = video_ioctl2,
> + .mmap = v4l2_m2m_fop_mmap,
> +};
> +
> +static int
> +vidioc_querycap(struct file *file, void *priv, struct
> v4l2_capability *cap)
> +{
> + strncpy(cap->driver, RGA_NAME, sizeof(cap->driver) - 1);
> + strncpy(cap->card, RGA_NAME, sizeof(cap->card) - 1);
> + cap->bus_info[0] = 0;
> + cap->device_caps = V4L2_CAP_VIDEO_M2M | V4L2_CAP_STREAMING;
> + cap->capabilities = cap->device_caps | V4L2_CAP_DEVICE_CAPS;
> + return 0;
> +}
> +
> +static int vidioc_enum_fmt(struct file *file, void *prv, struct
> v4l2_fmtdesc *f)
> +{
> + struct rga_fmt *fmt;
> + if (f->index >= NUM_FORMATS)
> + return -EINVAL;
> + fmt = &formats[f->index];
> + f->pixelformat = fmt->fourcc;
> + strncpy(f->description, fmt->name, sizeof(f->description) -
> 1);
> + return 0;
> +}
> +
> +static int vidioc_g_fmt(struct file *file, void *prv, struct
> v4l2_format *f)
> +{
> + struct rga_ctx *ctx = prv;
> + struct vb2_queue *vq;
> + struct rga_frame *frm;
> +
> + vq = v4l2_m2m_get_vq(ctx->fh.m2m_ctx, f->type);
> + if (!vq)
> + return -EINVAL;
> + frm = rga_get_frame(ctx, f->type);
> + if (IS_ERR(frm))
> + return PTR_ERR(frm);
> +
> + f->fmt.pix.width = frm->width;
> + f->fmt.pix.height = frm->height;
> + f->fmt.pix.field = V4L2_FIELD_NONE;
> + f->fmt.pix.pixelformat = frm->fmt->fourcc;
> + f->fmt.pix.bytesperline = frm->stride;
> + f->fmt.pix.sizeimage = frm->size;
> +
> + return 0;
> +}
> +
> +static int vidioc_try_fmt(struct file *file, void *prv, struct
> v4l2_format *f)
> +{
> + struct rga_fmt *fmt;
> + enum v4l2_field *field;
> +
> + fmt = rga_fmt_find(f);
> + if (!fmt)
> + return -EINVAL;
> +
> + field = &f->fmt.pix.field;
> + if (*field == V4L2_FIELD_ANY)
> + *field = V4L2_FIELD_NONE;
> + else if (*field != V4L2_FIELD_NONE)
> + return -EINVAL;
> +
> + if (f->fmt.pix.width > MAX_WIDTH)
> + f->fmt.pix.width = MAX_WIDTH;
> + if (f->fmt.pix.height > MAX_HEIGHT)
> + f->fmt.pix.height = MAX_HEIGHT;
> +
> + if (f->fmt.pix.width < MIN_WIDTH)
> + f->fmt.pix.width = MIN_WIDTH;
> + if (f->fmt.pix.height < MIN_HEIGHT)
> + f->fmt.pix.height = MIN_HEIGHT;
> +
> + if (fmt->hw_format >= RGA_COLOR_FMT_YUV422SP)
> + f->fmt.pix.bytesperline = f->fmt.pix.width;
> + else
> + f->fmt.pix.bytesperline = (f->fmt.pix.width * fmt-
> >depth) >> 3;
> +
> + f->fmt.pix.sizeimage =
> + f->fmt.pix.height * (f->fmt.pix.width * fmt->depth) >>
> 3;
> +
> + return 0;
> +}
> +
> +static int vidioc_s_fmt(struct file *file, void *prv, struct
> v4l2_format *f)
> +{
> + struct rga_ctx *ctx = prv;
> + struct rockchip_rga *rga = ctx->rga;
> + struct vb2_queue *vq;
> + struct rga_frame *frm;
> + struct rga_fmt *fmt;
> + int ret = 0;
> +
> + /* Adjust all values accordingly to the hardware
> capabilities
> + * and chosen format. */
> + ret = vidioc_try_fmt(file, prv, f);
> + if (ret)
> + return ret;
> + vq = v4l2_m2m_get_vq(ctx->fh.m2m_ctx, f->type);
> + if (vb2_is_busy(vq)) {
> + v4l2_err(&rga->v4l2_dev, "queue (%d) bust\n", f-
> >type);
> + return -EBUSY;
> + }
> + frm = rga_get_frame(ctx, f->type);
> + if (IS_ERR(frm))
> + return PTR_ERR(frm);
> + fmt = rga_fmt_find(f);
> + if (!fmt)
> + return -EINVAL;
> + frm->width = f->fmt.pix.width;
> + frm->height = f->fmt.pix.height;
> + frm->size = f->fmt.pix.sizeimage;
> + frm->fmt = fmt;
> + frm->stride = f->fmt.pix.bytesperline;
> +
> + /* Reset crop settings */
> + frm->crop.left = 0;
> + frm->crop.top = 0;
> + frm->crop.width = frm->width;
> + frm->crop.height = frm->height;
> + return 0;
> +}
> +
> +static int
> +vidioc_cropcap(struct file *file, void *priv, struct v4l2_cropcap
> *cr)
> +{
> + struct rga_ctx *ctx = priv;
> + struct rga_frame *f;
> +
> + f = rga_get_frame(ctx, cr->type);
> + if (IS_ERR(f))
> + return PTR_ERR(f);
> +
> + cr->bounds.left = 0;
> + cr->bounds.top = 0;
> + cr->bounds.width = f->width;
> + cr->bounds.height = f->height;
> + cr->defrect = cr->bounds;
> + return 0;
> +}
> +
> +static int vidioc_g_crop(struct file *file, void *prv, struct
> v4l2_crop *cr)
> +{
> + struct rga_ctx *ctx = prv;
> + struct rga_frame *f;
> +
> + f = rga_get_frame(ctx, cr->type);
> + if (IS_ERR(f))
> + return PTR_ERR(f);
> +
> + cr->c = f->crop;
> +
> + return 0;
> +}
> +
> +static int
> +vidioc_try_crop(struct file *file, void *prv, const struct v4l2_crop
> *cr)
> +{
> + struct rga_ctx *ctx = prv;
> + struct rockchip_rga *rga = ctx->rga;
> + struct rga_frame *f;
> +
> + f = rga_get_frame(ctx, cr->type);
> + if (IS_ERR(f))
> + return PTR_ERR(f);
> +
> + if (cr->c.top < 0 || cr->c.left < 0) {
> + v4l2_err(&rga->v4l2_dev,
> + "doesn't support negative values for top &
> left. \n");
> + return -EINVAL;
> + }
> +
> + if (cr->c.left + cr->c.width > f->width ||
> + cr->c.top + cr->c.height > f->height ||
> + cr->c.width < MIN_WIDTH || cr->c.height < MIN_HEIGHT) {
> + v4l2_err(&rga->v4l2_dev, "unsupport crop value.
> \n");
> + return -EINVAL;
> + }
> +
> + return 0;
> +}
> +
> +static int
> +vidioc_s_crop(struct file *file, void *prv, const struct v4l2_crop
> *cr)
> +{
> + struct rga_ctx *ctx = prv;
> + struct rga_frame *f;
> + int ret;
> +
> + ret = vidioc_try_crop(file, prv, cr);
> + if (ret)
> + return ret;
> + f = rga_get_frame(ctx, cr->type);
> + if (IS_ERR(f))
> + return PTR_ERR(f);
> +
> + f->crop = cr->c;
> +
> + return 0;
> +}
> +
> +static const struct v4l2_ioctl_ops rga_ioctl_ops = {
> + .vidioc_querycap = vidioc_querycap,
> +
> + .vidioc_enum_fmt_vid_cap = vidioc_enum_fmt,
> + .vidioc_g_fmt_vid_cap = vidioc_g_fmt,
> + .vidioc_try_fmt_vid_cap = vidioc_try_fmt,
> + .vidioc_s_fmt_vid_cap = vidioc_s_fmt,
> +
> + .vidioc_enum_fmt_vid_out = vidioc_enum_fmt,
> + .vidioc_g_fmt_vid_out = vidioc_g_fmt,
> + .vidioc_try_fmt_vid_out = vidioc_try_fmt,
> + .vidioc_s_fmt_vid_out = vidioc_s_fmt,
> +
> + .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_streamon = v4l2_m2m_ioctl_streamon,
> + .vidioc_streamoff = v4l2_m2m_ioctl_streamoff,
> +
> + .vidioc_g_crop = vidioc_g_crop,
> + .vidioc_s_crop = vidioc_s_crop,
> + .vidioc_cropcap = vidioc_cropcap,
> +};
> +
> +static struct video_device rga_videodev = {
> + .name = "rockchip-rga",
> + .fops = &rga_fops,
> + .ioctl_ops = &rga_ioctl_ops,
> + .minor = -1,
> + .release = video_device_release,
> + .vfl_dir = VFL_DIR_M2M,
> +};
> +
> +static int rga_enable_clocks(struct rockchip_rga *rga)
> +{
> + int ret;
> +
> + ret = clk_prepare_enable(rga->sclk);
> + if (ret) {
> + dev_err(rga->dev, "Cannot enable rga sclk: %d\n",
> ret);
> + return ret;
> + }
> +
> + ret = clk_prepare_enable(rga->aclk);
> + if (ret) {
> + dev_err(rga->dev, "Cannot enable rga aclk: %d\n",
> ret);
> + goto err_disable_sclk;
> + }
> +
> + ret = clk_prepare_enable(rga->hclk);
> + if (ret) {
> + dev_err(rga->dev, "Cannot enable rga hclk: %d\n",
> ret);
> + goto err_disable_aclk;
> + }
> +
> + return 0;
> +
> +err_disable_sclk:
> + clk_disable_unprepare(rga->sclk);
> +err_disable_aclk:
> + clk_disable_unprepare(rga->aclk);
> +
> + return ret;
> +}
> +
> +static int rga_parse_dt(struct rockchip_rga *rga)
> +{
> + struct reset_control *core_rst, *axi_rst, *ahb_rst;
> +
> + core_rst = devm_reset_control_get(rga->dev, "core");
> + if (IS_ERR(core_rst)) {
> + dev_err(rga->dev, "failed to get core reset
> controller\n");
> + return PTR_ERR(core_rst);
> + }
> +
> + axi_rst = devm_reset_control_get(rga->dev, "axi");
> + if (IS_ERR(axi_rst)) {
> + dev_err(rga->dev, "failed to get axi reset
> controller\n");
> + return PTR_ERR(axi_rst);
> + }
> +
> + ahb_rst = devm_reset_control_get(rga->dev, "ahb");
> + if (IS_ERR(ahb_rst)) {
> + dev_err(rga->dev, "failed to get ahb reset
> controller\n");
> + return PTR_ERR(ahb_rst);
> + }
> +
> + reset_control_assert(core_rst);
> + udelay(1);
> + reset_control_deassert(core_rst);
> +
> + reset_control_assert(axi_rst);
> + udelay(1);
> + reset_control_deassert(axi_rst);
> +
> + reset_control_assert(ahb_rst);
> + udelay(1);
> + reset_control_deassert(ahb_rst);
> +
> + rga->sclk = devm_clk_get(rga->dev, "sclk");
> + if (IS_ERR(rga->sclk)) {
> + dev_err(rga->dev, "failed to get sclk clock\n");
> + return PTR_ERR(rga->sclk);
> + }
> +
> + rga->aclk = devm_clk_get(rga->dev, "aclk");
> + if (IS_ERR(rga->aclk)) {
> + dev_err(rga->dev, "failed to get aclk clock\n");
> + return PTR_ERR(rga->aclk);
> + }
> +
> + rga->hclk = devm_clk_get(rga->dev, "hclk");
> + if (IS_ERR(rga->hclk)) {
> + dev_err(rga->dev, "failed to get hclk clock\n");
> + return PTR_ERR(rga->hclk);
> + }
> +
> + return rga_enable_clocks(rga);
> +}
> +
> +static int rga_probe(struct platform_device *pdev)
> +{
> + struct rockchip_rga *rga;
> + struct video_device *vfd;
> + struct resource *res;
> + int ret = 0;
> + int irq;
> +
> + if (!pdev->dev.of_node)
> + return -ENODEV;
> +
> + rga = devm_kzalloc(&pdev->dev, sizeof(*rga), GFP_KERNEL);
> + if (!rga)
> + return -ENOMEM;
> +
> + rga->dev = &pdev->dev;
> + spin_lock_init(&rga->ctrl_lock);
> + mutex_init(&rga->mutex);
> +
> + init_waitqueue_head(&rga->irq_queue);
> +
> + ret = rga_parse_dt(rga);
> + if (ret) {
> + dev_err(&pdev->dev, "Unable to parse OF data\n");
> + }
> +
> + pm_runtime_enable(rga->dev);
> +
> + res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
> +
> + rga->regs = devm_ioremap_resource(rga->dev, res);
> + if (IS_ERR(rga->regs)) {
> + ret = PTR_ERR(rga->regs);
> + goto err_put_clk;
> + }
> +
> + irq = platform_get_irq(pdev, 0);
> + if (irq < 0) {
> + dev_err(rga->dev, "failed to get irq\n");
> + ret = irq;
> + goto err_put_clk;
> + }
> +
> + ret = devm_request_irq(rga->dev, irq, rga_isr, 0,
> + dev_name(rga->dev), rga);
> + if (ret < 0) {
> + dev_err(rga->dev, "failed to request irq\n");
> + goto err_put_clk;
> + }
> +
> + pm_runtime_get_sync(rga->dev);
> +
> + rga->version.major = (rga_read(rga, RGA_VERSION_INFO) >> 24)
> & 0xFF;
> + rga->version.minor = (rga_read(rga, RGA_VERSION_INFO) >> 20)
> & 0x0F;
> +
> + pm_runtime_put(rga->dev);
> +
> + ret = v4l2_device_register(&pdev->dev, &rga->v4l2_dev);
> + if (ret)
> + goto err_put_clk;
> + vfd = video_device_alloc();
> + if (!vfd) {
> + v4l2_err(&rga->v4l2_dev, "Failed to allocate video
> device\n");
> + ret = -ENOMEM;
> + goto unreg_v4l2_dev;
> + }
> + *vfd = rga_videodev;
> + vfd->lock = &rga->mutex;
> + vfd->v4l2_dev = &rga->v4l2_dev;
> + ret = video_register_device(vfd, VFL_TYPE_GRABBER, 0);
> + if (ret) {
> + v4l2_err(&rga->v4l2_dev, "Failed to register video
> device\n");
> + goto rel_vdev;
> + }
> +
> + video_set_drvdata(vfd, rga);
> + snprintf(vfd->name, sizeof(vfd->name), "%s",
> rga_videodev.name);
> + rga->vfd = vfd;
> + v4l2_info(&rga->v4l2_dev, "device registered as
> /dev/video%d\n",
> + vfd->num);
> + platform_set_drvdata(pdev, rga);
> + rga->m2m_dev = v4l2_m2m_init(&rga_m2m_ops);
> + if (IS_ERR(rga->m2m_dev)) {
> + v4l2_err(&rga->v4l2_dev, "Failed to init mem2mem
> device\n");
> + ret = PTR_ERR(rga->m2m_dev);
> + goto unreg_video_dev;
> + }
> +
> + def_frame.stride = (def_frame.width * def_frame.fmt->depth)
> >> 3;
> +
> + return 0;
> +
> +unreg_video_dev:
> + video_unregister_device(rga->vfd);
> +rel_vdev:
> + video_device_release(vfd);
> +unreg_v4l2_dev:
> + v4l2_device_unregister(&rga->v4l2_dev);
> +err_put_clk:
> + pm_runtime_disable(rga->dev);
> +
> + return ret;
> +}
> +
> +static int rga_remove(struct platform_device *pdev)
> +{
> + struct rockchip_rga *rga = platform_get_drvdata(pdev);
> +
> + v4l2_info(&rga->v4l2_dev, "Removing \n");
> + v4l2_m2m_release(rga->m2m_dev);
> + video_unregister_device(rga->vfd);
> + v4l2_device_unregister(&rga->v4l2_dev);
> +
> + pm_runtime_disable(rga->dev);
> +
> + return 0;
> +}
> +
> +static const struct of_device_id rockchip_rga_match[] = {
> + {
> + .compatible = "rockchip,rk3288-rga",
> + },
> + {
> + .compatible = "rockchip,rk3228-rga",
> + },
> + {
> + .compatible = "rockchip,rk3328-rga",
> + },
> + {
> + .compatible = "rockchip,rk3399-rga",
> + },
> + {},
> +};
> +
> +MODULE_DEVICE_TABLE(of, rockchip_rga_match);
> +
> +static struct platform_driver rga_pdrv = {
> + .probe = rga_probe,
> + .remove = rga_remove,
> + .driver = {
> + .name = "rockchip-rga",
> + .of_match_table = rockchip_rga_match,
> + },
> +};
> +
> +module_platform_driver(rga_pdrv);
> +
> +MODULE_AUTHOR("Jacob Chen <jacob-chen@...wrt.com>");
> +MODULE_DESCRIPTION("Rockchip Raster 2d Grapphic Acceleration Unit");
> +MODULE_LICENSE("GPL");
> diff --git a/drivers/media/platform/rockchip-rga/rga.h
> b/drivers/media/platform/rockchip-rga/rga.h
> new file mode 100644
> index 0000000..272c4d82
> --- /dev/null
> +++ b/drivers/media/platform/rockchip-rga/rga.h
> @@ -0,0 +1,133 @@
> +/*
> + * Copyright (C) Fuzhou Rockchip Electronics Co.Ltd
> + * Author: Jacob Chen <jacob-chen@...wrt.com>
> + *
> + * This software is licensed under the terms of the GNU General
> Public
> + * License version 2, as published by the Free Software Foundation,
> and
> + * may be copied, distributed, and modified under those terms.
> + *
> + * This program is distributed in the hope that it will be useful,
> + * but WITHOUT ANY WARRANTY; without even the implied warranty of
> + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
> + * GNU General Public License for more details.
> + */
> +#ifndef __RGA_H__
> +#define __RGA_H__
> +
> +#include <linux/platform_device.h>
> +#include <media/videobuf2-v4l2.h>
> +#include <media/v4l2-ctrls.h>
> +#include <media/v4l2-device.h>
> +
> +#define RGA_NAME "rockchip-rga"
> +
> +struct rga_fmt {
> + char *name;
> + u32 fourcc;
> + int depth;
> + u8 uv_factor;
> + u8 y_div;
> + u8 x_div;
> + u8 color_swap;
> + u8 hw_format;
> +};
> +
> +struct rga_frame {
> + /* Original dimensions */
> + u32 width;
> + u32 height;
> +
> + /* Crop */
> + struct v4l2_rect crop;
> +
> + /* Image format */
> + struct rga_fmt *fmt;
> +
> + /* Variables that can calculated once and reused */
> + u32 stride;
> + u32 size;
> +};
> +
> +struct rockchip_rga_version {
> + u32 major;
> + u32 minor;
> +};
> +
> +struct rga_buf {
> + u32 index;
> + u32 type;
> + void *mmu_pages;
> + struct list_head entry;
> +};
> +
> +struct rga_ctx {
> + struct v4l2_fh fh;
> + struct rockchip_rga *rga;
> + struct rga_frame in;
> + struct rga_frame out;
> + struct v4l2_ctrl_handler ctrl_handler;
> +
> + /* Control values */
> + u32 op;
> + u32 hflip;
> + u32 vflip;
> + u32 rotate;
> + u32 fill_color;
> + u32 alpha0;
> + u32 alpha1;
> +
> + /* CMD Buffers for RGA reading */
> + dma_addr_t cmdbuf_phy;
> + void *cmdbuf_virt;
> +
> + /* Buffers queued for RGA */
> + struct list_head buffers_list;
> +};
> +
> +struct rockchip_rga {
> + struct v4l2_device v4l2_dev;
> + struct v4l2_m2m_dev *m2m_dev;
> + struct video_device *vfd;
> +
> + struct device *dev;
> + struct regmap *grf;
> + void __iomem *regs;
> + struct clk *sclk;
> + struct clk *aclk;
> + struct clk *hclk;
> + struct rockchip_rga_version version;
> +
> + struct mutex mutex;
> + spinlock_t ctrl_lock;
> +
> + wait_queue_head_t irq_queue;
> +
> + struct rga_ctx *curr;
> +};
> +
> +/* Controls */
> +
> +#define V4L2_CID_RGA_OP (V4L2_CID_USER_BASE | 0x1001)
Could be nice to generalize. We could setup a control and fill the
values base on porter duff operations, then drivers can implement a
subset. Right now, there is no generic way for userspace to know if a
driver is just doing copies with some transformations, or if it can
actually do alpha blending hence used for composting streams. Note that
I haven't looked at all possibilities, Freescale IMX.6 seems to have a
similar driver, which has been wrapped in GStreamer with this proposed
elements:
https://bugzilla.gnome.org/show_bug.cgi?id=772766
> +#define V4L2_CID_RGA_ALHPA_REG0 (V4L2_CID_USER_BASE | 0x1002)
> +#define V4L2_CID_RGA_ALHPA_REG1 (V4L2_CID_USER_BASE | 0x1003)
It's not obvious why there is two CID, and how this differ from
existing V4L2_CID_ALPHA (the global alpha control).
> +
> +/* Operation values */
> +#define OP_COPY 0
> +#define OP_SOLID_FILL 1
> +#define OP_ALPHA_BLEND 2
> +
> +struct rga_frame *rga_get_frame(struct rga_ctx *ctx, enum
> v4l2_buf_type type);
> +
> +/* RGA Buffers Manage Part */
> +extern const struct vb2_ops rga_qops;
> +void *rga_buf_find_page(struct vb2_buffer *vb);
> +void rga_buf_clean(struct rga_ctx *ctx);
> +
> +/* RGA Hardware Part */
> +void rga_write(struct rockchip_rga *rga, u32 reg, u32 value);
> +u32 rga_read(struct rockchip_rga *rga, u32 reg);
> +void rga_mod(struct rockchip_rga *rga, u32 reg, u32 val, u32 mask);
> +void rga_start(struct rockchip_rga *rga);
> +void rga_cmd_set(struct rga_ctx *ctx, void *src_mmu_pages, void
> *dst_mmu_pages);
> +
> +#endif
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