Commit f7e7b48e authored by Jacob Chen's avatar Jacob Chen Committed by Mauro Carvalho Chehab

[media] rockchip/rga: v4l2 m2m support

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 driver 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 according to operations
The code in rga-buf.c is used to create private mmu table for RGA.
Signed-off-by: default avatarJacob Chen <jacob-chen@iotwrt.com>
Signed-off-by: default avatarHans Verkuil <hansverk@cisco.com>
Signed-off-by: default avatarMauro Carvalho Chehab <mchehab@osg.samsung.com>
parent 7ef3b44c
...@@ -458,6 +458,21 @@ config VIDEO_RENESAS_VSP1 ...@@ -458,6 +458,21 @@ config VIDEO_RENESAS_VSP1
To compile this driver as a module, choose M here: the module To compile this driver as a module, choose M here: the module
will be called vsp1. will be called vsp1.
config VIDEO_ROCKCHIP_RGA
tristate "Rockchip Raster 2d Graphic 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 RGA 2d graphics accelerator.
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.
To compile this driver as a module choose m here.
config VIDEO_TI_VPE config VIDEO_TI_VPE
tristate "TI VPE (Video Processing Engine) driver" tristate "TI VPE (Video Processing Engine) driver"
depends on VIDEO_DEV && VIDEO_V4L2 depends on VIDEO_DEV && VIDEO_V4L2
......
...@@ -64,6 +64,8 @@ obj-$(CONFIG_VIDEO_RENESAS_FDP1) += rcar_fdp1.o ...@@ -64,6 +64,8 @@ obj-$(CONFIG_VIDEO_RENESAS_FDP1) += rcar_fdp1.o
obj-$(CONFIG_VIDEO_RENESAS_JPU) += rcar_jpu.o obj-$(CONFIG_VIDEO_RENESAS_JPU) += rcar_jpu.o
obj-$(CONFIG_VIDEO_RENESAS_VSP1) += vsp1/ obj-$(CONFIG_VIDEO_RENESAS_VSP1) += vsp1/
obj-$(CONFIG_VIDEO_ROCKCHIP_RGA) += rockchip/rga/
obj-y += omap/ obj-y += omap/
obj-$(CONFIG_VIDEO_AM437X_VPFE) += am437x/ obj-$(CONFIG_VIDEO_AM437X_VPFE) += am437x/
......
rockchip-rga-objs := rga.o rga-hw.o rga-buf.o
obj-$(CONFIG_VIDEO_ROCKCHIP_RGA) += rockchip-rga.o
/*
* Copyright (C) 2017 Fuzhou Rockchip Electronics Co.Ltd
* Author: Jacob Chen <jacob-chen@iotwrt.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);
if (*nplanes)
return sizes[0] < f->size ? -EINVAL : 0;
sizes[0] = f->size;
*nplanes = 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_start_streaming(struct vb2_queue *q, unsigned int count)
{
struct rga_ctx *ctx = vb2_get_drv_priv(q);
struct rockchip_rga *rga = ctx->rga;
int ret, i;
ret = pm_runtime_get_sync(rga->dev);
if (!ret)
return 0;
for (i = 0; i < q->num_buffers; ++i) {
if (q->bufs[i]->state == VB2_BUF_STATE_ACTIVE) {
v4l2_m2m_buf_done(to_vb2_v4l2_buffer(q->bufs[i]),
VB2_BUF_STATE_QUEUED);
}
}
return ret;
}
static void rga_buf_stop_streaming(struct vb2_queue *q)
{
struct rga_ctx *ctx = vb2_get_drv_priv(q);
struct rockchip_rga *rga = ctx->rga;
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)
break;
v4l2_m2m_buf_done(vbuf, VB2_BUF_STATE_ERROR);
}
pm_runtime_put(rga->dev);
}
const struct vb2_ops rga_qops = {
.queue_setup = rga_queue_setup,
.buf_prepare = rga_buf_prepare,
.buf_queue = rga_buf_queue,
.wait_prepare = vb2_ops_wait_prepare,
.wait_finish = vb2_ops_wait_finish,
.start_streaming = rga_buf_start_streaming,
.stop_streaming = rga_buf_stop_streaming,
};
/* RGA MMU is a 1-Level MMU, so it can't be used through the IOMMU API.
* We use it more like a scatter-gather list.
*/
void rga_buf_map(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;
unsigned int address, len, i, p;
unsigned int mapped_size = 0;
if (vb->type == V4L2_BUF_TYPE_VIDEO_OUTPUT)
pages = rga->src_mmu_pages;
else
pages = rga->dst_mmu_pages;
/* Create local MMU table for RGA */
sgt = vb2_plane_cookie(vb, 0);
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);
}
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/*
* Copyright (C) Fuzhou Rockchip Electronics Co.Ltd
* Author: Jacob Chen <jacob-chen@iotwrt.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 {
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;
u32 colorspace;
/* 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_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;
};
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;
/* vfd lock */
struct mutex mutex;
/* ctrl parm lock */
spinlock_t ctrl_lock;
wait_queue_head_t irq_queue;
struct rga_ctx *curr;
dma_addr_t cmdbuf_phy;
void *cmdbuf_virt;
unsigned int *src_mmu_pages;
unsigned int *dst_mmu_pages;
};
struct rga_frame *rga_get_frame(struct rga_ctx *ctx, enum v4l2_buf_type type);
/* RGA Buffers Manage */
extern const struct vb2_ops rga_qops;
void rga_buf_map(struct vb2_buffer *vb);
/* RGA Hardware */
static inline void rga_write(struct rockchip_rga *rga, u32 reg, u32 value)
{
writel(value, rga->regs + reg);
};
static inline u32 rga_read(struct rockchip_rga *rga, u32 reg)
{
return readl(rga->regs + reg);
};
static inline 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_hw_start(struct rockchip_rga *rga);
#endif
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