[PATCH v3 2/5] [media]: rockchip/rga: v4l2 m2m support
Jacob Chen
jacobchen110 at gmail.com
Mon Jul 31 07:25:23 PDT 2017
Hi Hans,
2017-07-31 16:38 GMT+08:00 Hans Verkuil <hverkuil at xs4all.nl>:
> Hi Jacob,
>
> A quick review below:
>
> On 07/31/2017 05:07 AM, Jacob Chen wrote:
>> 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
>
> drvier -> driver
>
>> And supports various operations from the rendering pipeline.
>> - copy
>> - fast solid color fill
>> - rotation
>> - flip
>> - alpha blending
>
> What other operations are supported by the HW but not (yet?) in this
> driver?
>
All of them are supported in this driver.
V4L2_CID_ROTATE - rotation
V4L2_CID_VFLIP - flip
V4L2_CID_BG_COLOR - color fill
V4L2_CID_PORTER_DUFF_MODE - copy/alpha blending
>>
>> The code in rga-hw.c is used to configure regs accroding to operations
>
> accroding -> according
>
>> The code in rga-buf.c is used to create (1-Level)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 at iotwrt.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 | 141 ++++
>> drivers/media/platform/rockchip-rga/rga-hw.c | 650 +++++++++++++++++
>> drivers/media/platform/rockchip-rga/rga-hw.h | 437 ++++++++++++
>> drivers/media/platform/rockchip-rga/rga.c | 987 ++++++++++++++++++++++++++
>> drivers/media/platform/rockchip-rga/rga.h | 110 +++
>> 8 files changed, 2341 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..b4d28e3
>> --- /dev/null
>> +++ b/drivers/media/platform/rockchip-rga/rga-buf.c
>> @@ -0,0 +1,141 @@
>> +/*
>> + * Copyright (C) Fuzhou Rockchip Electronics Co.Ltd
>
> I think the copyright statement should include a year.
>
>> + * Author: Jacob Chen <jacob-chen at 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);
>> +
>
> Since you are supporting VIDIOC_CREATE_BUFS you need to add this check:
>
> if (*nplanes)
> return sizes[0] < f->size ? -EINVAL : 0;
>
>> + sizes[0] = f->size;
>> + *nplanes = 1;
>> +
>> + if (*nbuffers == 0)
>> + *nbuffers = 1;
>
> No need, *nbuffers is never 0.
>
>> +
>> + 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;
>> +
>> + ret = pm_runtime_get_sync(rga->dev);
>> + return ret > 0 ? 0 : ret;
>
> If ret != 0 then you need to return all queued buffers back to vb2 (vb2_buffer_done)
> with state VB2_BUF_STATE_QUEUED. Similar to what you do in stop_streaming, but with
> state QUEUED instead of ERROR.
>
ok, but i think it can't be done in stop_streaming.
>> +}
>> +
>> +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)
>> + return;
>> + 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,
>> + .start_streaming = rga_buf_start_streaming,
>> + .stop_streaming = rga_buf_stop_streaming,
>
> I'm pretty sure you need to add:
>
> .wait_prepare = vb2_ops_wait_prepare,
> .wait_finish = vb2_ops_wait_finish,
>
> otherwise you'll have potential locking problems.
>
>> +};
>> +
>> +/* 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);
>> +}
>> 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..2261c01
>> --- /dev/null
>> +++ b/drivers/media/platform/rockchip-rga/rga-hw.c
>> @@ -0,0 +1,650 @@
>> +/*
>> + * Copyright (C) Fuzhou Rockchip Electronics Co.Ltd
>> + * Author: Jacob Chen <jacob-chen at 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 "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)
>> +{
>> + struct rockchip_rga *rga = ctx->rga;
>> + u32 *dest = rga->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)
>> +{
>> + struct rockchip_rga *rga = ctx->rga;
>> + u32 *dest = rga->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)
>> +{
>> + struct rockchip_rga *rga = ctx->rga;
>> + u32 *dest = rga->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)
>> +{
>> + struct rockchip_rga *rga = ctx->rga;
>> + u32 *dest = rga->cmdbuf_virt;
>> + 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 == V4L2_PORTER_DUFF_CLEAR) {
>> +
>> + /*
>> + * 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)
>> +{
>> + struct rockchip_rga *rga = ctx->rga;
>> + u32 *dest = rga->cmdbuf_virt;
>> + union rga_mode_ctrl mode;
>> + union rga_alpha_ctrl0 alpha_ctrl0;
>> + union rga_alpha_ctrl1 alpha_ctrl1;
>> +
>> + mode.val = 0;
>> + alpha_ctrl0.val = 0;
>> + alpha_ctrl1.val = 0;
>> +
>> + switch (ctx->op) {
>> + case V4L2_PORTER_DUFF_CLEAR:
>> + 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;
>> + case V4L2_PORTER_DUFF_DST:
>> + case V4L2_PORTER_DUFF_DSTATOP:
>> + case V4L2_PORTER_DUFF_DSTIN:
>> + case V4L2_PORTER_DUFF_DSTOUT:
>> + case V4L2_PORTER_DUFF_DSTOVER:
>> + case V4L2_PORTER_DUFF_SRCATOP:
>> + case V4L2_PORTER_DUFF_SRCIN:
>> + case V4L2_PORTER_DUFF_SRCOUT:
>> + case V4L2_PORTER_DUFF_SRCOVER:
>> + mode.data.gradient_sat = 1;
>> + mode.data.render = RGA_MODE_RENDER_BITBLT;
>> + mode.data.bitblt = RGA_MODE_BITBLT_MODE_SRC_TO_DST;
>> +
>> + alpha_ctrl0.data.rop_en = 1;
>> + alpha_ctrl0.data.rop_mode = RGA_ALPHA_ROP_MODE_3;
>> + alpha_ctrl0.data.rop_select = RGA_ALPHA_SELECT_ALPHA;
>> +
>> + alpha_ctrl1.data.dst_alpha_cal_m0 = RGA_ALPHA_CAL_NORMAL;
>> + alpha_ctrl1.data.src_alpha_cal_m0 = RGA_ALPHA_CAL_NORMAL;
>> + alpha_ctrl1.data.dst_alpha_cal_m1 = RGA_ALPHA_CAL_NORMAL;
>> + alpha_ctrl1.data.src_alpha_cal_m1 = RGA_ALPHA_CAL_NORMAL;
>> + break;
>> + default:
>> + mode.data.gradient_sat = 1;
>> + mode.data.render = RGA_MODE_RENDER_BITBLT;
>> + mode.data.bitblt = RGA_MODE_BITBLT_MODE_SRC_TO_DST;
>> + break;
>> + }
>> +
>> + switch (ctx->op) {
>> + case V4L2_PORTER_DUFF_DST:
>> + /* A=Dst.a */
>> + alpha_ctrl1.data.src_factor_m1 = RGA_ALPHA_FACTOR_ZERO;
>> +
>> + alpha_ctrl1.data.dst_alpha_m1 = RGA_ALPHA_NORMAL;
>> + alpha_ctrl1.data.dst_blend_m1 = RGA_ALPHA_BLEND_NORMAL;
>> + alpha_ctrl1.data.dst_factor_m1 = RGA_ALPHA_FACTOR_ONE;
>> +
>> + /* C=Dst.c */
>> + alpha_ctrl1.data.src_factor_m0 = RGA_ALPHA_FACTOR_ZERO;
>> +
>> + alpha_ctrl1.data.dst_color_m0 = RGA_ALPHA_COLOR_NORMAL;
>> + alpha_ctrl1.data.dst_alpha_m0 = RGA_ALPHA_NORMAL;
>> + alpha_ctrl1.data.dst_blend_m0 = RGA_ALPHA_BLEND_NORMAL;
>> + alpha_ctrl1.data.dst_factor_m0 = RGA_ALPHA_FACTOR_ONE;
>> + break;
>> + case V4L2_PORTER_DUFF_DSTATOP:
>> + /* A=Src.a */
>> + alpha_ctrl1.data.src_alpha_m1 = RGA_ALPHA_NORMAL;
>> + alpha_ctrl1.data.src_blend_m1 = RGA_ALPHA_BLEND_NORMAL;
>> + alpha_ctrl1.data.src_factor_m1 = RGA_ALPHA_FACTOR_ONE;
>> +
>> + alpha_ctrl1.data.dst_factor_m1 = RGA_ALPHA_FACTOR_ZERO;
>> +
>> + /* C=Src.a*Dst.c+Src.c*(1.0-Dst.a) */
>> + alpha_ctrl1.data.src_color_m0 = RGA_ALPHA_COLOR_NORMAL;
>> + alpha_ctrl1.data.src_alpha_m0 = RGA_ALPHA_NORMAL;
>> + alpha_ctrl1.data.src_blend_m0 = RGA_ALPHA_BLEND_NORMAL;
>> + alpha_ctrl1.data.src_factor_m0 = RGA_ALPHA_FACTOR_OTHER_REVERSE;
>> +
>> + alpha_ctrl1.data.dst_color_m0 = RGA_ALPHA_COLOR_NORMAL;
>> + alpha_ctrl1.data.dst_alpha_m0 = RGA_ALPHA_NORMAL;
>> + alpha_ctrl1.data.dst_blend_m0 = RGA_ALPHA_BLEND_NORMAL;
>> + alpha_ctrl1.data.dst_factor_m0 = RGA_ALPHA_FACTOR_OTHER;
>> + break;
>> + case V4L2_PORTER_DUFF_DSTIN:
>> + /* A=Dst.a*Src.a */
>> + alpha_ctrl1.data.src_alpha_m1 = RGA_ALPHA_NORMAL;
>> + alpha_ctrl1.data.src_blend_m1 = RGA_ALPHA_BLEND_NORMAL;
>> + alpha_ctrl1.data.src_factor_m1 = RGA_ALPHA_FACTOR_ZERO;
>> +
>> + alpha_ctrl1.data.dst_alpha_m1 = RGA_ALPHA_NORMAL;
>> + alpha_ctrl1.data.dst_blend_m1 = RGA_ALPHA_BLEND_NORMAL;
>> + alpha_ctrl1.data.dst_factor_m1 = RGA_ALPHA_FACTOR_OTHER;
>> +
>> + /* C=Dst.c*Src.a */
>> + alpha_ctrl1.data.src_color_m0 = RGA_ALPHA_COLOR_NORMAL;
>> + alpha_ctrl1.data.src_alpha_m0 = RGA_ALPHA_NORMAL;
>> + alpha_ctrl1.data.src_blend_m0 = RGA_ALPHA_BLEND_NORMAL;
>> + alpha_ctrl1.data.src_factor_m0 = RGA_ALPHA_FACTOR_ZERO;
>> +
>> + alpha_ctrl1.data.dst_color_m0 = RGA_ALPHA_COLOR_NORMAL;
>> + alpha_ctrl1.data.dst_alpha_m0 = RGA_ALPHA_NORMAL;
>> + alpha_ctrl1.data.dst_blend_m0 = RGA_ALPHA_BLEND_NORMAL;
>> + alpha_ctrl1.data.dst_factor_m0 = RGA_ALPHA_FACTOR_OTHER;
>> + break;
>> + case V4L2_PORTER_DUFF_DSTOUT:
>> + /* A=Dst.a*(1.0-Src.a) */
>> + alpha_ctrl1.data.src_alpha_m1 = RGA_ALPHA_NORMAL;
>> + alpha_ctrl1.data.src_blend_m1 = RGA_ALPHA_BLEND_NORMAL;
>> + alpha_ctrl1.data.src_factor_m1 = RGA_ALPHA_FACTOR_ZERO;
>> +
>> + alpha_ctrl1.data.dst_alpha_m1 = RGA_ALPHA_NORMAL;
>> + alpha_ctrl1.data.dst_blend_m1 = RGA_ALPHA_BLEND_NORMAL;
>> + alpha_ctrl1.data.dst_factor_m1 = RGA_ALPHA_FACTOR_OTHER_REVERSE;
>> +
>> + /* C=Dst.c*(1.0-Src.a) */
>> + alpha_ctrl1.data.src_color_m0 = RGA_ALPHA_COLOR_NORMAL;
>> + alpha_ctrl1.data.src_alpha_m0 = RGA_ALPHA_NORMAL;
>> + alpha_ctrl1.data.src_blend_m0 = RGA_ALPHA_BLEND_NORMAL;
>> + alpha_ctrl1.data.src_factor_m0 = RGA_ALPHA_FACTOR_ZERO;
>> +
>> + alpha_ctrl1.data.dst_color_m0 = RGA_ALPHA_COLOR_NORMAL;
>> + alpha_ctrl1.data.dst_alpha_m0 = RGA_ALPHA_NORMAL;
>> + alpha_ctrl1.data.dst_blend_m0 = RGA_ALPHA_BLEND_NORMAL;
>> + alpha_ctrl1.data.dst_factor_m0 = RGA_ALPHA_FACTOR_OTHER_REVERSE;
>> + break;
>> + case V4L2_PORTER_DUFF_DSTOVER:
>> + /* A=Src.a+Dst.a*(1.0-Src.a) */
>> + alpha_ctrl1.data.src_alpha_m1 = RGA_ALPHA_NORMAL;
>> + alpha_ctrl1.data.src_blend_m1 = RGA_ALPHA_BLEND_NORMAL;
>> + alpha_ctrl1.data.src_factor_m1 = RGA_ALPHA_FACTOR_ONE;
>> +
>> + alpha_ctrl1.data.dst_alpha_m1 = RGA_ALPHA_NORMAL;
>> + alpha_ctrl1.data.dst_blend_m1 = RGA_ALPHA_BLEND_NORMAL;
>> + alpha_ctrl1.data.dst_factor_m1 = RGA_ALPHA_FACTOR_OTHER_REVERSE;
>> +
>> + /* C=Dst.c+Src.c*(1.0-Dst.a) */
>> + alpha_ctrl1.data.src_color_m0 = RGA_ALPHA_COLOR_NORMAL;
>> + alpha_ctrl1.data.src_alpha_m0 = RGA_ALPHA_NORMAL;
>> + alpha_ctrl1.data.src_blend_m0 = RGA_ALPHA_BLEND_NORMAL;
>> + alpha_ctrl1.data.src_factor_m0 = RGA_ALPHA_FACTOR_OTHER_REVERSE;
>> +
>> + alpha_ctrl1.data.dst_color_m0 = RGA_ALPHA_COLOR_NORMAL;
>> + alpha_ctrl1.data.dst_alpha_m0 = RGA_ALPHA_NORMAL;
>> + alpha_ctrl1.data.dst_blend_m0 = RGA_ALPHA_BLEND_NORMAL;
>> + alpha_ctrl1.data.dst_factor_m0 = RGA_ALPHA_FACTOR_ONE;
>> + break;
>> + case V4L2_PORTER_DUFF_SRCATOP:
>> + /* A=Dst.a */
>> + alpha_ctrl1.data.src_factor_m1 = RGA_ALPHA_FACTOR_ZERO;
>> +
>> + alpha_ctrl1.data.dst_alpha_m1 = RGA_ALPHA_NORMAL;
>> + alpha_ctrl1.data.dst_blend_m1 = RGA_ALPHA_BLEND_NORMAL;
>> + alpha_ctrl1.data.dst_factor_m1 = RGA_ALPHA_FACTOR_ONE;
>> +
>> + /* C=Dst.a*Src.c+Dst.c*(1.0-Src.a) */
>> + alpha_ctrl1.data.src_color_m0 = RGA_ALPHA_COLOR_NORMAL;
>> + alpha_ctrl1.data.src_alpha_m0 = RGA_ALPHA_NORMAL;
>> + alpha_ctrl1.data.src_blend_m0 = RGA_ALPHA_BLEND_NORMAL;
>> + alpha_ctrl1.data.src_factor_m0 = RGA_ALPHA_FACTOR_OTHER;
>> +
>> + alpha_ctrl1.data.dst_color_m0 = RGA_ALPHA_COLOR_NORMAL;
>> + alpha_ctrl1.data.dst_alpha_m0 = RGA_ALPHA_NORMAL;
>> + alpha_ctrl1.data.dst_blend_m0 = RGA_ALPHA_BLEND_NORMAL;
>> + alpha_ctrl1.data.dst_factor_m0 = RGA_ALPHA_FACTOR_OTHER_REVERSE;
>> + break;
>> + case V4L2_PORTER_DUFF_SRCIN:
>> + /* A=Src.a*Dst.a */
>> + alpha_ctrl1.data.src_alpha_m1 = RGA_ALPHA_NORMAL;
>> + alpha_ctrl1.data.src_blend_m1 = RGA_ALPHA_BLEND_NORMAL;
>> + alpha_ctrl1.data.src_factor_m1 = RGA_ALPHA_FACTOR_ZERO;
>> +
>> + alpha_ctrl1.data.dst_alpha_m1 = RGA_ALPHA_NORMAL;
>> + alpha_ctrl1.data.dst_blend_m1 = RGA_ALPHA_BLEND_NORMAL;
>> + alpha_ctrl1.data.dst_factor_m1 = RGA_ALPHA_FACTOR_OTHER;
>> +
>> + /* C=Src.c*Dst.a */
>> + alpha_ctrl1.data.src_color_m0 = RGA_ALPHA_COLOR_NORMAL;
>> + alpha_ctrl1.data.src_alpha_m0 = RGA_ALPHA_NORMAL;
>> + alpha_ctrl1.data.src_blend_m0 = RGA_ALPHA_BLEND_NORMAL;
>> + alpha_ctrl1.data.src_factor_m0 = RGA_ALPHA_FACTOR_OTHER;
>> +
>> + alpha_ctrl1.data.dst_color_m0 = RGA_ALPHA_COLOR_NORMAL;
>> + alpha_ctrl1.data.dst_alpha_m0 = RGA_ALPHA_NORMAL;
>> + alpha_ctrl1.data.dst_blend_m0 = RGA_ALPHA_BLEND_NORMAL;
>> + alpha_ctrl1.data.dst_factor_m0 = RGA_ALPHA_FACTOR_ZERO;
>> + break;
>> + case V4L2_PORTER_DUFF_SRCOUT:
>> + /* A=Src.a*(1.0-Dst.a) */
>> + alpha_ctrl1.data.src_alpha_m1 = RGA_ALPHA_NORMAL;
>> + alpha_ctrl1.data.src_blend_m1 = RGA_ALPHA_BLEND_NORMAL;
>> + alpha_ctrl1.data.src_factor_m1 = RGA_ALPHA_FACTOR_OTHER_REVERSE;
>> +
>> + alpha_ctrl1.data.dst_alpha_m1 = RGA_ALPHA_NORMAL;
>> + alpha_ctrl1.data.dst_blend_m1 = RGA_ALPHA_BLEND_NORMAL;
>> + alpha_ctrl1.data.dst_factor_m1 = RGA_ALPHA_FACTOR_ZERO;
>> +
>> + /* C=Src.c*(1.0-Dst.a) */
>> + alpha_ctrl1.data.src_color_m0 = RGA_ALPHA_COLOR_NORMAL;
>> + alpha_ctrl1.data.src_alpha_m0 = RGA_ALPHA_NORMAL;
>> + alpha_ctrl1.data.src_blend_m0 = RGA_ALPHA_BLEND_NORMAL;
>> + alpha_ctrl1.data.src_factor_m0 = RGA_ALPHA_FACTOR_OTHER_REVERSE;
>> +
>> + alpha_ctrl1.data.dst_color_m0 = RGA_ALPHA_COLOR_NORMAL;
>> + alpha_ctrl1.data.dst_alpha_m0 = RGA_ALPHA_NORMAL;
>> + alpha_ctrl1.data.dst_blend_m0 = RGA_ALPHA_BLEND_NORMAL;
>> + alpha_ctrl1.data.dst_factor_m0 = RGA_ALPHA_FACTOR_ZERO;
>> + break;
>> + case V4L2_PORTER_DUFF_SRCOVER:
>> + /* A=Src.a+Dst.a*(1.0-Src.a) */
>> + alpha_ctrl1.data.src_alpha_m1 = RGA_ALPHA_NORMAL;
>> + alpha_ctrl1.data.src_blend_m1 = RGA_ALPHA_BLEND_NORMAL;
>> + alpha_ctrl1.data.src_factor_m1 = RGA_ALPHA_FACTOR_ONE;
>> +
>> + alpha_ctrl1.data.dst_alpha_m1 = RGA_ALPHA_NORMAL;
>> + alpha_ctrl1.data.dst_blend_m1 = RGA_ALPHA_BLEND_NORMAL;
>> + alpha_ctrl1.data.dst_factor_m1 = RGA_ALPHA_FACTOR_OTHER_REVERSE;
>> +
>> + /* C=Src.c+Dst.c*(1.0-Src.a) */
>> + alpha_ctrl1.data.src_color_m0 = RGA_ALPHA_COLOR_NORMAL;
>> + alpha_ctrl1.data.src_alpha_m0 = RGA_ALPHA_NORMAL;
>> + alpha_ctrl1.data.src_blend_m0 = RGA_ALPHA_BLEND_NORMAL;
>> + alpha_ctrl1.data.src_factor_m0 = RGA_ALPHA_FACTOR_ONE;
>> +
>> + alpha_ctrl1.data.dst_color_m0 = RGA_ALPHA_COLOR_NORMAL;
>> + alpha_ctrl1.data.dst_alpha_m0 = RGA_ALPHA_NORMAL;
>> + alpha_ctrl1.data.dst_blend_m0 = RGA_ALPHA_BLEND_NORMAL;
>> + alpha_ctrl1.data.dst_factor_m0 = RGA_ALPHA_FACTOR_OTHER_REVERSE;
>> + break;
>> + default:
>> + break;
>> + }
>> +
>> + dest[(RGA_ALPHA_CTRL0 - RGA_MODE_BASE_REG) >> 2] = alpha_ctrl0.val;
>> + dest[(RGA_ALPHA_CTRL1 - RGA_MODE_BASE_REG) >> 2] = alpha_ctrl1.val;
>> +
>> + dest[(RGA_MODE_CTRL - RGA_MODE_BASE_REG) >> 2] = mode.val;
>> +}
>> +
>> +void rga_cmd_set(struct rga_ctx *ctx)
>> +{
>> + struct rockchip_rga *rga = ctx->rga;
>> +
>> + memset(rga->cmdbuf_virt, 0, RGA_CMDBUF_SIZE * 4);
>> +
>> + if (ctx->op != V4L2_PORTER_DUFF_CLEAR) {
>> + rga_cmd_set_src_addr(ctx, rga->src_mmu_pages);
>> + /*
>> + * Due to hardware bug,
>> + * src1 mmu also should be configured when using alpha blending.
>> + */
>> + rga_cmd_set_src1_addr(ctx, rga->dst_mmu_pages);
>> + }
>> + rga_cmd_set_dst_addr(ctx, rga->dst_mmu_pages);
>> + rga_cmd_set_mode(ctx);
>> +
>> + rga_cmd_set_trans_info(ctx);
>> +
>> + rga_write(rga, RGA_CMD_BASE, rga->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)
>> +{
>> + /* sync CMD buf for RGA */
>> + dma_sync_single_for_device(rga->dev, rga->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..5c6569c
>> --- /dev/null
>> +++ b/drivers/media/platform/rockchip-rga/rga-hw.h
>> @@ -0,0 +1,437 @@
>> +/*
>> + * Copyright (C) Fuzhou Rockchip Electronics Co.Ltd
>> + * Author: Jacob Chen <jacob-chen at 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_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 0
>> +#define RGA_ALPHA_SELECT_ROP 1
>> +
>> +#define RGA_ALPHA_MASK_BIG_ENDIAN 0
>> +#define RGA_ALPHA_MASK_LITTLE_ENDIAN 1
>> +
>> +#define RGA_ALPHA_NORMAL 0
>> +#define RGA_ALPHA_REVERSE 1
>> +
>> +#define RGA_ALPHA_BLEND_GLOBAL 0
>> +#define RGA_ALPHA_BLEND_NORMAL 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_ONE 1
>> +#define RGA_ALPHA_FACTOR_OTHER 2
>> +#define RGA_ALPHA_FACTOR_OTHER_REVERSE 3
>> +#define RGA_ALPHA_FACTOR_SELF 4
>> +
>> +#define RGA_ALPHA_COLOR_NORMAL 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..738e649
>> --- /dev/null
>> +++ b/drivers/media/platform/rockchip-rga/rga.c
>> @@ -0,0 +1,987 @@
>> +/*
>> + * Copyright (C) Fuzhou Rockchip Electronics Co.Ltd
>> + * Author: Jacob Chen <jacob-chen at 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/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_buf_map(src);
>> + rga_buf_map(dst);
>> +
>> + rga_cmd_set(ctx);
>> +
>> + 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;
>
> VB2_USERPTR should only be used if the DMA is able to handle partial
> pages. I.e. the memory allocated by malloc() will start at a 8 byte
> aligned address in the middle of a page, and ditto for the last page.
>
> If the DMA cannot handle this, then you shouldn't set this streaming
> mode. Same for the capture queue below.
>
>> + 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_PORTER_DUFF_MODE:
>> + 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;
>> + }
>> + 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 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_menu(&ctx->ctrl_handler, &rga_ctrl_ops,
>> + V4L2_CID_PORTER_DUFF_MODE,
>> + V4L2_PORTER_DUFF_CLEAR, 0,
>> + V4L2_PORTER_DUFF_SRC);
>> +
>> + 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);
>> +
>> + 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",
>
> Don't set the name. This is supplied by the v4l2-core (see v4l2-ioctl.c) to ensure
> consistent naming between drivers.
>
>> + .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,
>> + },
>> + {
>> + .name = "YVU_420",
>> + .fourcc = V4L2_PIX_FMT_YVU420,
>> + .color_swap = RGA_COLOR_UV_SWAP,
>> + .hw_format = RGA_COLOR_FMT_YUV420P,
>> + .depth = 12,
>> + .uv_factor = 4,
>> + .y_div = 2,
>> + .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);
>> +
>> + v4l2_info(&rga->v4l2_dev, "instance opened\n");
>
> Drop this, no need to spam the kernel log.
>
>> + 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);
>> +
>> + v4l2_m2m_ctx_release(ctx->fh.m2m_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");
>
> Ditto.
>
>> + 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;
>
> This should be something like: "platform:rga"
>
>> + cap->device_caps = V4L2_CAP_VIDEO_M2M | V4L2_CAP_STREAMING;
>> + cap->capabilities = cap->device_caps | V4L2_CAP_DEVICE_CAPS;
>
> Drop these two lines. Instead set the device_caps of struct video_device and
> the v4l2 core will fill in these two fields for you.
>
>> + 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);
>
> Drop this, the description is filled in by the v4l2 core.
>
>> + 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;
>
> Just set field to FIELD_NONE directly:
>
> f->fmt.pix.field = FIELD_NONE;
>
>> +
>> + 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;
>> +}
>
> Nack. Implement the selection API instead. The crop API is deprecated and must
> not be used in new drivers. And it almost certainly doesn't do what you expect
> for a m2m device.
>
> Look at existing m2m drivers that support g/s_selection and see how it is done
> there.
>
>> +
>> +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 void rga_disable_clocks(struct rockchip_rga *rga)
>> +{
>> + clk_disable_unprepare(rga->sclk);
>> + clk_disable_unprepare(rga->hclk);
>> + clk_disable_unprepare(rga->aclk);
>> +}
>> +
>> +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 0;
>> +}
>> +
>> +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;
>> + }
>> +
>> + 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);
>
> Use -1 instead of 0. You also need to move this to the end of this function:
> as soon as the video node is created it can be used, so you better do that
> when everything has been initialized.
>
>> + 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);
>
> Use video_device_node_name() to get the name.
>
>> + 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;
>> + }
>> +
>> + 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;
>
> Is this the HW version number? If so, then that would be useful to log here.
>
>> +
>> + pm_runtime_put(rga->dev);
>> +
>> + /* Create CMD buffer */
>> + rga->cmdbuf_virt = dma_alloc_attrs(rga->dev, RGA_CMDBUF_SIZE,
>> + &rga->cmdbuf_phy, GFP_KERNEL,
>> + DMA_ATTR_WRITE_COMBINE);
>> +
>> + rga->src_mmu_pages =
>> + (unsigned int *)__get_free_pages(GFP_KERNEL | __GFP_ZERO, 3);
>> + rga->dst_mmu_pages =
>> + (unsigned int *)__get_free_pages(GFP_KERNEL | __GFP_ZERO, 3);
>> +
>> + 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);
>> +
>> + dma_free_attrs(rga->dev, RGA_CMDBUF_SIZE, &rga->cmdbuf_virt,
>> + rga->cmdbuf_phy, DMA_ATTR_WRITE_COMBINE);
>> +
>> + free_pages((unsigned long)rga->src_mmu_pages, 3);
>> + free_pages((unsigned long)rga->dst_mmu_pages, 3);
>> +
>> + 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;
>> +}
>> +
>> +#ifdef CONFIG_PM
>> +static int rga_runtime_suspend(struct device *dev)
>> +{
>> + struct rockchip_rga *rga = dev_get_drvdata(dev);
>> +
>> + rga_disable_clocks(rga);
>> +
>> + return 0;
>> +}
>> +
>> +static int rga_runtime_resume(struct device *dev)
>> +{
>> + struct rockchip_rga *rga = dev_get_drvdata(dev);
>> +
>> + return rga_enable_clocks(rga);
>> +}
>> +#endif
>> +
>> +static const struct dev_pm_ops rga_pm = {
>> + SET_RUNTIME_PM_OPS(rga_runtime_suspend,
>> + rga_runtime_resume, NULL)
>> +};
>> +
>> +static const struct of_device_id rockchip_rga_match[] = {
>> + {
>> + .compatible = "rockchip,rk3288-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",
>> + .pm = &rga_pm,
>> + .of_match_table = rockchip_rga_match,
>> + },
>> +};
>> +
>> +module_platform_driver(rga_pdrv);
>> +
>> +MODULE_AUTHOR("Jacob Chen <jacob-chen at iotwrt.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..9d30b41
>> --- /dev/null
>> +++ b/drivers/media/platform/rockchip-rga/rga.h
>> @@ -0,0 +1,110 @@
>> +/*
>> + * Copyright (C) Fuzhou Rockchip Electronics Co.Ltd
>> + * Author: Jacob Chen <jacob-chen at 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 {
>> + 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_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;
>> +
>> + struct mutex mutex;
>> + 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 Part */
>> +extern const struct vb2_ops rga_qops;
>> +void rga_buf_map(struct vb2_buffer *vb);
>> +
>> +/* 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);
>> +
>> +#endif
>>
>
> Regards,
>
> Hans
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