@@ -458,6 +458,21 @@ 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 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
tristate "TI VPE (Video Processing Engine) driver"
depends on VIDEO_DEV && VIDEO_V4L2
@@ -62,6 +62,8 @@ 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-$(CONFIG_VIDEO_AM437X_VPFE) += am437x/
new file mode 100644
@@ -0,0 +1,3 @@
+rockchip-rga-objs := rga.o rga-hw.o rga-buf.o
+
+obj-$(CONFIG_VIDEO_ROCKCHIP_RGA) += rockchip-rga.o
new file mode 100644
@@ -0,0 +1,154 @@
+/*
+ * 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);
+}
new file mode 100644
@@ -0,0 +1,421 @@
+/*
+ * 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.
+ */
+
+#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)
+ 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) {
+ switch (ctx->in.colorspace) {
+ case V4L2_COLORSPACE_REC709:
+ src_info.data.csc_mode =
+ RGA_SRC_CSC_MODE_BT709_R0;
+ break;
+ default:
+ src_info.data.csc_mode =
+ RGA_SRC_CSC_MODE_BT601_R0;
+ break;
+ }
+ }
+ }
+
+ if (ctx->out.fmt->hw_format >= RGA_COLOR_FMT_YUV422SP) {
+ switch (ctx->out.colorspace) {
+ case V4L2_COLORSPACE_REC709:
+ dst_info.data.csc_mode = RGA_SRC_CSC_MODE_BT709_R0;
+ break;
+ default:
+ dst_info.data.csc_mode = RGA_DST_CSC_MODE_BT601_R0;
+ break;
+ }
+ }
+
+ 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;
+
+ 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;
+
+ mode.data.gradient_sat = 1;
+ mode.data.render = RGA_MODE_RENDER_BITBLT;
+ mode.data.bitblt = RGA_MODE_BITBLT_MODE_SRC_TO_DST;
+
+ /* disable alpha blending */
+ 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);
+
+ 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);
+
+ /* sync CMD buf for RGA */
+ dma_sync_single_for_device(rga->dev, rga->cmdbuf_phy,
+ PAGE_SIZE, DMA_BIDIRECTIONAL);
+}
+
+void rga_hw_start(struct rockchip_rga *rga)
+{
+ struct rga_ctx *ctx = rga->curr;
+
+ rga_cmd_set(ctx);
+
+ 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);
+}
new file mode 100644
@@ -0,0 +1,437 @@
+/*
+ * 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_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 address */
+#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_RGB888 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
new file mode 100644
@@ -0,0 +1,1012 @@
+/*
+ * 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.
+ */
+
+#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-event.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 debug;
+module_param(debug, int, 0644);
+
+static void job_abort(void *prv)
+{
+ struct rga_ctx *ctx = prv;
+ struct rockchip_rga *rga = ctx->rga;
+
+ if (!rga->curr) /* No job currently running */
+ return;
+
+ wait_event_timeout(rga->irq_queue,
+ !rga->curr, 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_hw_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);
+
+ 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);
+ BUG_ON(!dst);
+
+ 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_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_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_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, 4);
+
+ 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[] = {
+ {
+ .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,
+ },
+ {
+ .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,
+ },
+ {
+ .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,
+ },
+ {
+ .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,
+ },
+ {
+ .fourcc = V4L2_PIX_FMT_RGB24,
+ .color_swap = RGA_COLOR_NONE_SWAP,
+ .hw_format = RGA_COLOR_FMT_RGB888,
+ .depth = 24,
+ .uv_factor = 1,
+ .y_div = 1,
+ .x_div = 1,
+ },
+ {
+ .fourcc = V4L2_PIX_FMT_BGR24,
+ .color_swap = RGA_COLOR_RB_SWAP,
+ .hw_format = RGA_COLOR_FMT_RGB888,
+ .depth = 24,
+ .uv_factor = 1,
+ .y_div = 1,
+ .x_div = 1,
+ },
+ {
+ .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,
+ },
+ {
+ .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,
+ },
+ {
+ .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,
+ },
+ {
+ .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,
+ },
+ {
+ .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,
+ },
+ {
+ .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,
+ },
+ {
+ .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,
+ },
+ {
+ .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,
+ },
+ {
+ .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,
+ },
+ {
+ .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,
+ .colorspace = V4L2_COLORSPACE_DEFAULT,
+ .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);
+
+ return 0;
+}
+
+static int rga_release(struct file *file)
+{
+ struct rga_ctx *ctx =
+ container_of(file->private_data, struct rga_ctx, fh);
+ struct rockchip_rga *rga = ctx->rga;
+
+ mutex_lock(&rga->mutex);
+
+ 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);
+
+ mutex_unlock(&rga->mutex);
+
+ 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)
+{
+ strlcpy(cap->driver, RGA_NAME, sizeof(cap->driver));
+ strlcpy(cap->card, "rockchip-rga", sizeof(cap->card));
+ strlcpy(cap->bus_info, "platform:rga", sizeof(cap->bus_info));
+
+ 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;
+
+ 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;
+ f->fmt.pix.colorspace = frm->colorspace;
+
+ return 0;
+}
+
+static int vidioc_try_fmt(struct file *file, void *prv, struct v4l2_format *f)
+{
+ struct rga_fmt *fmt;
+
+ fmt = rga_fmt_find(f);
+ if (!fmt) {
+ fmt = &formats[0];
+ f->fmt.pix.pixelformat = fmt->fourcc;
+ }
+
+ f->fmt.pix.field = V4L2_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;
+ frm->colorspace = f->fmt.pix.colorspace;
+
+ /* 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_g_selection(struct file *file, void *prv,
+ struct v4l2_selection *s)
+{
+ struct rga_ctx *ctx = prv;
+ struct rga_frame *f;
+ bool use_frame = false;
+
+ f = rga_get_frame(ctx, s->type);
+ if (IS_ERR(f))
+ return PTR_ERR(f);
+
+ switch (s->target) {
+ case V4L2_SEL_TGT_COMPOSE_DEFAULT:
+ case V4L2_SEL_TGT_COMPOSE_BOUNDS:
+ if (s->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
+ return -EINVAL;
+ break;
+ case V4L2_SEL_TGT_CROP_DEFAULT:
+ case V4L2_SEL_TGT_CROP_BOUNDS:
+ if (s->type != V4L2_BUF_TYPE_VIDEO_OUTPUT)
+ return -EINVAL;
+ break;
+ case V4L2_SEL_TGT_COMPOSE:
+ if (s->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
+ return -EINVAL;
+ use_frame = true;
+ break;
+ case V4L2_SEL_TGT_CROP:
+ if (s->type != V4L2_BUF_TYPE_VIDEO_OUTPUT)
+ return -EINVAL;
+ use_frame = true;
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ if (use_frame) {
+ s->r = f->crop;
+ } else {
+ s->r.left = 0;
+ s->r.top = 0;
+ s->r.width = f->width;
+ s->r.height = f->height;
+ }
+
+ return 0;
+}
+
+static int vidioc_s_selection(struct file *file, void *prv,
+ struct v4l2_selection *s)
+{
+ struct rga_ctx *ctx = prv;
+ struct rockchip_rga *rga = ctx->rga;
+ struct rga_frame *f;
+ int ret = 0;
+
+ switch (s->target) {
+ case V4L2_SEL_TGT_COMPOSE:
+ /*
+ * COMPOSE target is only valid for capture buffer type, return
+ * error for output buffer type
+ */
+ if (s->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
+ return -EINVAL;
+ break;
+ case V4L2_SEL_TGT_CROP:
+ /*
+ * CROP target is only valid for output buffer type, return
+ * error for capture buffer type
+ */
+ if (s->type != V4L2_BUF_TYPE_VIDEO_OUTPUT)
+ return -EINVAL;
+ break;
+ /*
+ * bound and default crop/compose targets are invalid targets to
+ * try/set
+ */
+ default:
+ return -EINVAL;
+ }
+
+ if (s->r.top < 0 || s->r.left < 0) {
+ v4l2_dbg(debug, 1, &rga->v4l2_dev,
+ "doesn't support negative values for top & left.\n");
+ return -EINVAL;
+ }
+
+ if (s->r.left + s->r.width > f->width ||
+ s->r.top + s->r.height > f->height ||
+ s->r.width < MIN_WIDTH || s->r.height < MIN_HEIGHT) {
+ v4l2_dbg(debug, 1, &rga->v4l2_dev, "unsupported crop value.\n");
+ return -EINVAL;
+ }
+
+ f = rga_get_frame(ctx, s->type);
+ if (IS_ERR(f))
+ return PTR_ERR(f);
+
+ f->crop = s->r;
+
+ return ret;
+}
+
+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_subscribe_event = v4l2_ctrl_subscribe_event,
+ .vidioc_unsubscribe_event = v4l2_event_unsubscribe,
+
+ .vidioc_streamon = v4l2_m2m_ioctl_streamon,
+ .vidioc_streamoff = v4l2_m2m_ioctl_streamoff,
+
+ .vidioc_g_selection = vidioc_g_selection,
+ .vidioc_s_selection = vidioc_s_selection,
+};
+
+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,
+ .device_caps = V4L2_CAP_VIDEO_M2M | V4L2_CAP_STREAMING,
+};
+
+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;
+
+ video_set_drvdata(vfd, rga);
+ snprintf(vfd->name, sizeof(vfd->name), "%s", rga_videodev.name);
+ rga->vfd = vfd;
+
+ 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;
+
+ v4l2_info(&rga->v4l2_dev, "HW Version: 0x%02x.%02x\n",
+ rga->version.major, rga->version.minor);
+
+ 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;
+ def_frame.size = def_frame.stride * def_frame.height;
+
+ ret = video_register_device(vfd, VFL_TYPE_GRABBER, -1);
+ if (ret) {
+ v4l2_err(&rga->v4l2_dev, "Failed to register video device\n");
+ goto rel_vdev;
+ }
+
+ v4l2_info(&rga->v4l2_dev, "Registered %s as /dev/%s\n",
+ vfd->name, video_device_node_name(vfd));
+
+ return 0;
+
+rel_vdev:
+ video_device_release(vfd);
+unreg_video_dev:
+ video_unregister_device(rga->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 = RGA_NAME,
+ .pm = &rga_pm,
+ .of_match_table = rockchip_rga_match,
+ },
+};
+
+module_platform_driver(rga_pdrv);
+
+MODULE_AUTHOR("Jacob Chen <jacob-chen@iotwrt.com>");
+MODULE_DESCRIPTION("Rockchip Raster 2d Graphic Acceleration Unit");
+MODULE_LICENSE("GPL");
new file mode 100644
@@ -0,0 +1,123 @@
+/*
+ * 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;
+
+ 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 */
+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
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: Jacob Chen <jacob-chen@iotwrt.com> --- drivers/media/platform/Kconfig | 15 + drivers/media/platform/Makefile | 2 + drivers/media/platform/rockchip/rga/Makefile | 3 + drivers/media/platform/rockchip/rga/rga-buf.c | 154 ++++ drivers/media/platform/rockchip/rga/rga-hw.c | 421 ++++++++++ drivers/media/platform/rockchip/rga/rga-hw.h | 437 +++++++++++ drivers/media/platform/rockchip/rga/rga.c | 1012 +++++++++++++++++++++++++ drivers/media/platform/rockchip/rga/rga.h | 123 +++ 8 files changed, 2167 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