G2D is a 2D graphics accelerator engine present in the s5p family
of Samsung SoCs. It is capable of bitblt and raster operations on
images having dimensions of up to 8000x8000.
Signed-off-by: Kamil Debski <k.debski@xxxxxxxxxxx>
Signed-off-by: Kyungmin Park <kyungmin.park@xxxxxxxxxxx>
---
Hi,
This patch adds the G2D 2D graphics accelerator driver for the S5PC110
and Exynos4 Samsung SoCs. It has been written within the mem2mem framework.
It can be regarded as an example driver that uses the m2m framework.
Currently the driver supports bitblt with nearest neighbour resizing.
Also it is possible to apply the negative effect to the processed image.
In the future support for more processing features can be added.
Necessary platform modification will be posted to the linux.samsung-soc
mailing list.
Best wishes,
Kamil Debski
---
drivers/media/video/Kconfig | 9 +
drivers/media/video/Makefile | 2 +
drivers/media/video/s5p-g2d/Makefile | 3 +
drivers/media/video/s5p-g2d/g2d-hw.c | 115 +++++
drivers/media/video/s5p-g2d/g2d-regs.h | 119 +++++
drivers/media/video/s5p-g2d/g2d.c | 854 ++++++++++++++++++++++++++++++++
drivers/media/video/s5p-g2d/g2d.h | 132 +++++
7 files changed, 1234 insertions(+), 0 deletions(-)
create mode 100644 drivers/media/video/s5p-g2d/Makefile
create mode 100644 drivers/media/video/s5p-g2d/g2d-hw.c
create mode 100644 drivers/media/video/s5p-g2d/g2d-regs.h
create mode 100644 drivers/media/video/s5p-g2d/g2d.c
create mode 100644 drivers/media/video/s5p-g2d/g2d.h
diff --git a/drivers/media/video/Kconfig b/drivers/media/video/Kconfig
index 176ac49..7bc6e8e 100644
--- a/drivers/media/video/Kconfig
+++ b/drivers/media/video/Kconfig
@@ -1067,6 +1067,15 @@ config VIDEO_MEM2MEM_TESTDEV
This is a virtual test device for the memory-to-memory driver
framework.
+config VIDEO_SAMSUNG_S5P_G2D
+ tristate "Samsung S5P and EXYNOS4 G2D 2d graphics accelerator driver"
+ depends on VIDEO_DEV && VIDEO_V4L2 && PLAT_S5P
+ select VIDEOBUF2_DMA_CONTIG
+ select V4L2_MEM2MEM_DEV
+ default n
+ ---help---
+ This is a v4l2 driver for Samsung S5P and EXYNOS4 G2D
+ 2d graphics accelerator.
config VIDEO_SAMSUNG_S5P_MFC
tristate "Samsung S5P MFC 5.1 Video Codec"
diff --git a/drivers/media/video/Makefile b/drivers/media/video/Makefile
index 6cca52a..41be6e6 100644
--- a/drivers/media/video/Makefile
+++ b/drivers/media/video/Makefile
@@ -174,6 +174,8 @@ obj-$(CONFIG_VIDEO_SAMSUNG_S5P_FIMC) += s5p-fimc/
obj-$(CONFIG_VIDEO_SAMSUNG_S5P_MFC) += s5p-mfc/
obj-$(CONFIG_VIDEO_SAMSUNG_S5P_TV) += s5p-tv/
+obj-$(CONFIG_VIDEO_SAMSUNG_S5P_G2D) += s5p-g2d/
+
obj-$(CONFIG_ARCH_DAVINCI) += davinci/
obj-$(CONFIG_VIDEO_SH_VOU) += sh_vou.o
diff --git a/drivers/media/video/s5p-g2d/Makefile b/drivers/media/video/s5p-g2d/Makefile
new file mode 100644
index 0000000..2c48c41
--- /dev/null
+++ b/drivers/media/video/s5p-g2d/Makefile
@@ -0,0 +1,3 @@
+s5p-g2d-objs := g2d.o g2d-hw.o
+
+obj-$(CONFIG_VIDEO_SAMSUNG_S5P_G2D) += s5p-g2d.o
diff --git a/drivers/media/video/s5p-g2d/g2d-hw.c b/drivers/media/video/s5p-g2d/g2d-hw.c
new file mode 100644
index 0000000..cc7eb8e
--- /dev/null
+++ b/drivers/media/video/s5p-g2d/g2d-hw.c
@@ -0,0 +1,115 @@
+/*
+ * Samsung S5P G2D - 2D Graphics Accelerator Driver
+ *
+ * Copyright (c) 20011 Samsung Electronics Co., Ltd.
+ * Kamil Debski, <k.debski@xxxxxxxxxxx>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the
+ * License, or (at your option) any later version
+ */
+
+#include <asm/io.h>
+
+#include "g2d.h"
+#include "g2d-regs.h"
+
+#define w(x, a) writel((x), d->regs + (a))
+#define r(a) readl(d->regs + (a))
+
+/* g2d_reset clears all g2d registers */
+void g2d_reset(struct g2d_dev *d)
+{
+ w(1, SOFT_RESET_REG);
+}
+
+/* set parameters of the source image */
+void g2d_set_src_size(struct g2d_dev *d, struct g2d_frame *f)
+{
+ u32 n;
+ u32 stride;
+
+ w(f->stride & 0xFFFF, SRC_STRIDE_REG);
+
+ n = f->o_height & 0xFFF;
+ n <<= 16;
+ n |= f->o_width & 0xFFF;
+ w(n, SRC_LEFT_TOP_REG);
+
+ n = f->bottom & 0xFFF;
+ n <<= 16;
+ n |= f->right & 0xFFF;
+ w(n, SRC_RIGHT_BOTTOM_REG);
+
+ w(f->fmt->hw, SRC_COLOR_MODE_REG);
+}
+
+/* set address of the source buffer */
+void g2d_set_src_addr(struct g2d_dev *d, dma_addr_t a)
+{
+ w(a, SRC_BASE_ADDR_REG);
+}
+
+/* set parameters of the destination image */
+void g2d_set_dst_size(struct g2d_dev *d, struct g2d_frame *f)
+{
+ u32 n;
+ u32 stride;
+
+ w(f->stride & 0xFFFF, DST_STRIDE_REG);
+
+ n = f->o_height & 0xFFF;
+ n <<= 16;
+ n |= f->o_width & 0xFFF;
+ w(n, DST_LEFT_TOP_REG);
+
+ n = f->bottom & 0xFFF;
+ n <<= 16;
+ n |= f->right & 0xFFF;
+ w(n, DST_RIGHT_BOTTOM_REG);
+
+ w(f->fmt->hw, DST_COLOR_MODE_REG);
+}
+
+/* set address of the destination buffer */
+void g2d_set_dst_addr(struct g2d_dev *d, dma_addr_t a)
+{
+ w(a, DST_BASE_ADDR_REG);
+}
+
+/* set the ROP4 register - this determines the bit operations */
+void g2d_set_rop4(struct g2d_dev *d, u32 r)
+{
+ w(r, ROP4_REG);
+}
+
+/* enable image resize during copying */
+u32 g2d_cmd_stretch(u32 e)
+{
+ e &= 1;
+ return (e << 4);
+}
+
+/* set the command register */
+void g2d_set_cmd(struct g2d_dev *d, u32 c)
+{
+ w(c, BITBLT_COMMAND_REG);
+}
+
+/* start processing */
+void g2d_start(struct g2d_dev *d)
+{
+ /* Clear cache */
+ w(0x7, CACHECTL_REG);
+ /* Enable interrupt */
+ w(1, INTEN_REG);
+ /* Start G2D engine */
+ w(1, BITBLT_START_REG);
+}
+
+/* clear pending interrupt */
+void g2d_clear_int(struct g2d_dev *d)
+{
+ w(1, INTC_PEND_REG);
+}
diff --git a/drivers/media/video/s5p-g2d/g2d-regs.h b/drivers/media/video/s5p-g2d/g2d-regs.h
new file mode 100644
index 0000000..ce9b912
--- /dev/null
+++ b/drivers/media/video/s5p-g2d/g2d-regs.h
@@ -0,0 +1,119 @@
+/*
+ * Samsung S5P G2D - 2D Graphics Accelerator Driver
+ *
+ * Copyright (c) 20011 Samsung Electronics Co., Ltd.
+ * Kamil Debski, <k.debski@xxxxxxxxxxx>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the
+ * License, or (at your option) any later version
+ */
+
+/* General Registers */
+#define SOFT_RESET_REG 0x0000 /* Software reset reg */
+#define INTEN_REG 0x0004 /* Interrupt Enable reg */
+#define INTC_PEND_REG 0x000C /* Interrupt Control Pending reg */
+#define FIFO_STAT_REG 0x0010 /* Command FIFO Status reg */
+#define AXI_ID_MODE_REG 0x0014 /* AXI Read ID Mode reg */
+#define CACHECTL_REG 0x0018 /* Cache & Buffer clear reg */
+#define AXI_MODE_REG 0x001C /* AXI Mode reg */
+
+/* Command Registers */
+#define BITBLT_START_REG 0x0100 /* BitBLT Start reg */
+#define BITBLT_COMMAND_REG 0x0104 /* Command reg for BitBLT */
+
+/* Parameter Setting Registers (Rotate & Direction) */
+#define ROTATE_REG 0x0200 /* Rotation reg */
+#define SRC_MSK_DIRECT_REG 0x0204 /* Src and Mask Direction reg */
+#define DST_PAT_DIRECT_REG 0x0208 /* Dst and Pattern Direction reg */
+
+/* Parameter Setting Registers (Src) */
+#define SRC_SELECT_REG 0x0300 /* Src Image Selection reg */
+#define SRC_BASE_ADDR_REG 0x0304 /* Src Image Base Address reg */
+#define SRC_STRIDE_REG 0x0308 /* Src Stride reg */
+#define SRC_COLOR_MODE_REG 0x030C /* Src Image Color Mode reg */
+#define SRC_LEFT_TOP_REG 0x0310 /* Src Left Top Coordinate reg */
+#define SRC_RIGHT_BOTTOM_REG 0x0314 /* Src Right Bottom Coordinate reg */
+
+/* Parameter Setting Registers (Dst) */
+#define DST_SELECT_REG 0x0400 /* Dst Image Selection reg */
+#define DST_BASE_ADDR_REG 0x0404 /* Dst Image Base Address reg */
+#define DST_STRIDE_REG 0x0408 /* Dst Stride reg */
+#define DST_COLOR_MODE_REG 0x040C /* Dst Image Color Mode reg */
+#define DST_LEFT_TOP_REG 0x0410 /* Dst Left Top Coordinate reg */
+#define DST_RIGHT_BOTTOM_REG 0x0414 /* Dst Right Bottom Coordinate reg */
+
+/* Parameter Setting Registers (Pattern) */
+#define PAT_BASE_ADDR_REG 0x0500 /* Pattern Image Base Address reg */
+#define PAT_SIZE_REG 0x0504 /* Pattern Image Size reg */
+#define PAT_COLOR_MODE_REG 0x0508 /* Pattern Image Color Mode reg */
+#define PAT_OFFSET_REG 0x050C /* Pattern Left Top Coordinate reg */
+#define PAT_STRIDE_REG 0x0510 /* Pattern Stride reg */
+
+/* Parameter Setting Registers (Mask) */
+#define MASK_BASE_ADDR_REG 0x0520 /* Mask Base Address reg */
+#define MASK_STRIDE_REG 0x0524 /* Mask Stride reg */
+
+/* Parameter Setting Registers (Clipping Window) */
+#define CW_LT_REG 0x0600 /* LeftTop coordinates of Clip Window */
+#define CW_RB_REG 0x0604 /* RightBottom coordinates of Clip
+ Window */
+
+/* Parameter Setting Registers (ROP & Alpha Setting) */
+#define THIRD_OPERAND_REG 0x0610 /* Third Operand Selection reg */
+#define ROP4_REG 0x0614 /* Raster Operation reg */
+#define ALPHA_REG 0x0618 /* Alpha value, Fading offset value */
+
+/* Parameter Setting Registers (Color) */
+#define FG_COLOR_REG 0x0700 /* Foreground Color reg */
+#define BG_COLOR_REG 0x0704 /* Background Color reg */
+#define BS_COLOR_REG 0x0708 /* Blue Screen Color reg */
+
+/* Parameter Setting Registers (Color Key) */
+#define SRC_COLORKEY_CTRL_REG 0x0710 /* Src Color key control reg */
+#define SRC_COLORKEY_DR_MIN_REG 0x0714 /* Src Color key Decision Reference
+ Min reg */
+#define SRC_COLORKEY_DR_MAX_REG 0x0718 /* Src Color key Decision Reference
+ Max reg */
+#define DST_COLORKEY_CTRL_REG 0x071C /* Dst Color key control reg */
+#define DST_COLORKEY_DR_MIN_REG 0x0720 /* Dst Color key Decision Reference
+ Min reg */
+#define DST_COLORKEY_DR_MAX_REG 0x0724 /* Dst Color key Decision Reference
+ Max reg */
+
+/* Order of color values in memory */
+#define ORDER_XRGB 0
+#define ORDER_RGBX 1
+#define ORDER_XBGR 2
+#define ORDER_BGRX 3
+
+/* Color mode types */
+/* Please that color values order can be changed by a separate parameter. */
+/* Have a look at the COLOR_MODE macro definition */
+#define MODE_XRGB_8888 0
+#define MODE_ARGB_8888 1
+#define MODE_RGB_565 2
+#define MODE_XRGB_1555 3
+#define MODE_ARGB_1555 4
+#define MODE_XRGB_4444 5
+#define MODE_ARGB_4444 6
+#define MODE_PACKED_RGB_888 7
+
+/* Combines mode with the order of colors */
+#define COLOR_MODE(o, m) (((o) << 4) | (m))
+
+/* ROP4 operation values */
+#define ROP4_COPY 0xCCCC
+#define ROP4_INVERT 0x3333
+
+/* Hardware limits */
+#define MAX_WIDTH 8000
+#define MAX_HEIGHT 8000
+
+#define G2D_TIMEOUT 500
+
+/* Default format dimensions */
+#define DEFAULT_WIDTH 100
+#define DEFAULT_HEIGHT 100
+
diff --git a/drivers/media/video/s5p-g2d/g2d.c b/drivers/media/video/s5p-g2d/g2d.c
new file mode 100644
index 0000000..025a911
--- /dev/null
+++ b/drivers/media/video/s5p-g2d/g2d.c
@@ -0,0 +1,854 @@
+/*
+ * Samsung S5P G2D - 2D Graphics Accelerator Driver
+ *
+ * Copyright (c) 20011 Samsung Electronics Co., Ltd.
+ * Kamil Debski, <k.debski@xxxxxxxxxxx>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the
+ * License, or (at your option) any later version
+ */
+#include <linux/module.h>
+#include <linux/fs.h>
+#include <linux/version.h>
+#include <linux/timer.h>
+#include <linux/sched.h>
+#include <linux/slab.h>
+#include <linux/clk.h>
+#include <linux/interrupt.h>
+
+#include <linux/platform_device.h>
+#include <media/v4l2-mem2mem.h>
+#include <media/v4l2-device.h>
+#include <media/v4l2-ioctl.h>
+#include <media/videobuf2-core.h>
+#include <media/videobuf2-dma-contig.h>
+
+#include "g2d.h"
+#include "g2d-regs.h"
+
+#define fh2ctx(__fh) container_of(__fh, struct g2d_ctx, fh)
+
+static struct g2d_fmt formats[] = {
+ {
+ .name = "XRGB_8888",
+ .fourcc = V4L2_PIX_FMT_RGB32,
+ .depth = 32,
+ .hw = COLOR_MODE(ORDER_XRGB, MODE_XRGB_8888),
+ },
+ {
+ .name = "ARGB_8888",
+ /* TODO Find a better fourcc */
+ .fourcc = V4L2_PIX_FMT_RGB32,
+ .depth = 32,
+ .hw = COLOR_MODE(ORDER_XRGB, MODE_ARGB_8888),
+ },
+ {
+ .name = "RGB_565",
+ .fourcc = V4L2_PIX_FMT_RGB565X,
+ .depth = 16,
+ .hw = COLOR_MODE(ORDER_XRGB, MODE_RGB_565),
+ },
+ {
+ .name = "XRGB_1555",
+ .fourcc = V4L2_PIX_FMT_RGB555X,
+ .depth = 16,
+ .hw = COLOR_MODE(ORDER_XRGB, MODE_XRGB_1555),
+ },
+ {
+ .name = "ARGB_1555",
+ /* TODO find a better fourcc */
+ .fourcc = V4L2_PIX_FMT_RGB555X,
+ .depth = 16,
+ .hw = COLOR_MODE(ORDER_XRGB, MODE_ARGB_1555),
+ },
+ {
+ .name = "XRGB_4444",
+ .fourcc = V4L2_PIX_FMT_RGB444,
+ .depth = 16,
+ .hw = COLOR_MODE(ORDER_XRGB, MODE_XRGB_4444),
+ },
+ {
+ .name = "ARGB_4444",
+ /* TODO find a better fourcc */
+ .fourcc = V4L2_PIX_FMT_RGB444,
+ .depth = 16,
+ .hw = COLOR_MODE(ORDER_XRGB, MODE_ARGB_4444),
+ },
+ {
+ .name = "PACKED_RGB_888",
+ .fourcc = V4L2_PIX_FMT_RGB24,
+ .depth = 24,
+ .hw = COLOR_MODE(ORDER_XRGB, MODE_PACKED_RGB_888),
+ },
+};
+#define NUM_FORMATS ARRAY_SIZE(formats)
+
+/* Default frame */
+struct g2d_frame def_frame = {
+ .width = DEFAULT_WIDTH,
+ .height = DEFAULT_HEIGHT,
+ .c_width = DEFAULT_WIDTH,
+ .c_height = DEFAULT_HEIGHT,
+ .o_width = 0,
+ .o_height = 0,
+ .fmt = &formats[0],
+ .right = DEFAULT_WIDTH,
+ .bottom = DEFAULT_HEIGHT,
+};
+
+/* Find the structure describing the format basing on the data in the
+ * v4l2_format struct. */
+struct g2d_fmt *find_fmt(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;
+}
+
+/* Get frame description according to the supplied type */
+static struct g2d_frame *get_frame(struct g2d_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 g2d_queue_setup(struct vb2_queue *vq, unsigned int *nbuffers,
+ unsigned int *nplanes, unsigned long sizes[],
+ void *alloc_ctxs[])
+{
+ struct g2d_ctx *ctx = vb2_get_drv_priv(vq);
+ struct g2d_frame *f = get_frame(ctx, vq->type);
+
+ if (IS_ERR(f))
+ return PTR_ERR(f);
+
+ sizes[0] = f->size;
+ *nplanes = 1;
+ alloc_ctxs[0] = ctx->dev->alloc_ctx;
+
+ if (*nbuffers == 0)
+ *nbuffers = 1;
+
+ return 0;
+}
+
+static int g2d_buf_prepare(struct vb2_buffer *vb)
+{
+ struct g2d_ctx *ctx = vb2_get_drv_priv(vb->vb2_queue);
+ struct g2d_frame *f = 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 g2d_buf_queue(struct vb2_buffer *vb)
+{
+ struct g2d_ctx *ctx = vb2_get_drv_priv(vb->vb2_queue);
+ v4l2_m2m_buf_queue(ctx->m2m_ctx, vb);
+}
+
+
+static struct vb2_ops g2d_qops = {
+ .queue_setup = g2d_queue_setup,
+ .buf_prepare = g2d_buf_prepare,
+ .buf_queue = g2d_buf_queue,
+};
+
+static int queue_init(void *priv, struct vb2_queue *src_vq,
+ struct vb2_queue *dst_vq)
+{
+ struct g2d_ctx *ctx = priv;
+ int ret;
+
+ memset(src_vq, 0, sizeof(*src_vq));
+ src_vq->type = V4L2_BUF_TYPE_VIDEO_OUTPUT;
+ src_vq->io_modes = VB2_MMAP | VB2_USERPTR;
+ src_vq->drv_priv = ctx;
+ src_vq->ops = &g2d_qops;
+ src_vq->mem_ops = &vb2_dma_contig_memops;
+ src_vq->buf_struct_size = sizeof(struct v4l2_m2m_buffer);
+
+ ret = vb2_queue_init(src_vq);
+ if (ret)
+ return ret;
+
+ memset(dst_vq, 0, sizeof(*dst_vq));
+ dst_vq->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
+ dst_vq->io_modes = VB2_MMAP | VB2_USERPTR;
+ dst_vq->drv_priv = ctx;
+ dst_vq->ops = &g2d_qops;
+ dst_vq->mem_ops = &vb2_dma_contig_memops;
+ dst_vq->buf_struct_size = sizeof(struct v4l2_m2m_buffer);
+
+ return vb2_queue_init(dst_vq);
+}
+
+int g2d_setup_ctrls(struct g2d_ctx *ctx);
+
+static int g2d_open(struct file *file)
+{
+ struct g2d_dev *dev = video_drvdata(file);
+ struct g2d_ctx *ctx = NULL;
+ int ret = 0;
+
+ ctx = kzalloc(sizeof(*ctx), GFP_KERNEL);
+ if (!ctx)
+ return -ENOMEM;
+ ctx->dev = dev;
+ /* Set default formats */
+ ctx->in = def_frame;
+ ctx->out = def_frame;
+
+ ctx->m2m_ctx = v4l2_m2m_ctx_init(dev->m2m_dev, ctx, &queue_init);
+ if (IS_ERR(ctx->m2m_ctx)) {
+ ret = PTR_ERR(ctx->m2m_ctx);
+ kfree(ctx);
+ return ret;
+ }
+ v4l2_fh_init(&ctx->fh, video_devdata(file));
+ file->private_data = &ctx->fh;
+ v4l2_fh_add(&ctx->fh);
+
+ if (atomic_inc_return(&dev->num_inst) == 1) {
+ /* TODO init hw: power domain ? */
+ }
+
+ g2d_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;
+ v4l2_info(&dev->v4l2_dev, "instance opened\n");
+ return 0;
+}
+
+static int g2d_release(struct file *file)
+{
+ struct g2d_dev *dev = video_drvdata(file);
+ struct g2d_ctx *ctx = fh2ctx(file->private_data);
+
+ if (atomic_dec_and_test(&dev->num_inst) == 0) {
+ /* TODO deinit hw: power domain ? */
+ }
+ v4l2_ctrl_handler_free(&ctx->ctrl_handler);
+ v4l2_fh_del(&ctx->fh);
+ v4l2_fh_exit(&ctx->fh);
+ kfree(ctx);
+ v4l2_info(&dev->v4l2_dev, "instance closed\n");
+ return 0;
+}
+
+
+static int vidioc_querycap(struct file *file, void *priv,
+ struct v4l2_capability *cap)
+{
+ strncpy(cap->driver, G2D_NAME, sizeof(cap->driver) - 1);
+ strncpy(cap->card, G2D_NAME, sizeof(cap->card) - 1);
+ cap->bus_info[0] = 0;
+ cap->version = KERNEL_VERSION(1, 0, 0);
+ cap->capabilities = V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_VIDEO_OUTPUT
+ | V4L2_CAP_STREAMING;
+ return 0;
+}
+
+static int vidioc_enum_fmt(struct file *file, void *prv, struct v4l2_fmtdesc *f)
+{
+ struct g2d_fmt *fmt;
+ if (f->index >= NUM_FORMATS)
+ return -EINVAL;
+ fmt = &formats[f->index];
+ f->pixelformat = fmt->fourcc;
+ strncpy(f->description, fmt->name, sizeof(f->description) - 1);
+ return 0;
+}
+
+static int vidioc_g_fmt(struct file *file, void *prv, struct v4l2_format *f)
+{
+ struct g2d_ctx *ctx = prv;
+ struct vb2_queue *vq;
+ struct g2d_frame *frm;
+
+ vq = v4l2_m2m_get_vq(ctx->m2m_ctx, f->type);
+ if (!vq)
+ return -EINVAL;
+ frm = 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->width * frm->fmt->depth) >> 3;
+ f->fmt.pix.sizeimage = frm->size;
+ return 0;
+}
+
+static int vidioc_try_fmt(struct file *file, void *prv, struct v4l2_format *f)
+{
+ struct g2d_fmt *fmt;
+ enum v4l2_field *field;
+
+ fmt = find_fmt(f);
+ if (!fmt)
+ return -EINVAL;
+
+ field = &f->fmt.pix.field;
+ if (*field == V4L2_FIELD_ANY)
+ *field = V4L2_FIELD_NONE;
+ else if (*field != V4L2_FIELD_NONE)
+ return -EINVAL;
+
+ if (f->fmt.pix.width > MAX_WIDTH)
+ f->fmt.pix.width = MAX_WIDTH;
+ if (f->fmt.pix.height > MAX_HEIGHT)
+ f->fmt.pix.height = MAX_HEIGHT;
+
+ if (f->fmt.pix.width < 1)
+ f->fmt.pix.width = 1;
+ if (f->fmt.pix.height < 1)
+ f->fmt.pix.height = 1;
+
+ f->fmt.pix.bytesperline = (f->fmt.pix.width * fmt->depth) >> 3;
+ f->fmt.pix.sizeimage = f->fmt.pix.height * f->fmt.pix.bytesperline;
+ return 0;
+}
+
+static int vidioc_s_fmt(struct file *file, void *prv, struct v4l2_format *f)
+{
+ struct g2d_ctx *ctx = prv;
+ struct g2d_dev *dev = ctx->dev;
+ struct vb2_queue *vq;
+ struct g2d_frame *frm;
+ struct g2d_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->m2m_ctx, f->type);
+ if (vb2_is_busy(vq)) {
+ v4l2_err(&dev->v4l2_dev, "queue (%d) bust\n", f->type);
+ return -EBUSY;
+ }
+ frm = get_frame(ctx, f->type);
+ if (IS_ERR(frm))
+ return PTR_ERR(frm);
+ fmt = find_fmt(f);
+ if (!fmt)
+ return -EINVAL;
+ frm->width = f->fmt.pix.width;
+ frm->height = f->fmt.pix.height;
+ frm->size = f->fmt.pix.sizeimage;
+ /* Reset crop settings */
+ frm->o_width = 0;
+ frm->o_height = 0;
+ frm->c_width = frm->width;
+ frm->c_height = frm->height;
+ frm->right = frm->width;
+ frm->bottom = frm->height;
+ frm->fmt = fmt;
+ frm->stride = f->fmt.pix.bytesperline;
+ return 0;
+}
+
+static unsigned int g2d_poll(struct file *file, struct poll_table_struct *wait)
+{
+ struct g2d_ctx *ctx = fh2ctx(file->private_data);
+ return v4l2_m2m_poll(file, ctx->m2m_ctx, wait);
+}
+
+static int g2d_mmap(struct file *file, struct vm_area_struct *vma)
+{
+ struct g2d_ctx *ctx = fh2ctx(file->private_data);
+ return v4l2_m2m_mmap(file, ctx->m2m_ctx, vma);
+}
+
+static int vidioc_reqbufs(struct file *file, void *priv,
+ struct v4l2_requestbuffers *reqbufs)
+{
+ struct g2d_ctx *ctx = priv;
+ return v4l2_m2m_reqbufs(file, ctx->m2m_ctx, reqbufs);
+}
+
+static int vidioc_querybuf(struct file *file, void *priv,
+ struct v4l2_buffer *buf)
+{
+ struct g2d_ctx *ctx = priv;
+ return v4l2_m2m_querybuf(file, ctx->m2m_ctx, buf);
+}
+
+static int vidioc_qbuf(struct file *file, void *priv, struct v4l2_buffer *buf)
+{
+ struct g2d_ctx *ctx = priv;
+ return v4l2_m2m_qbuf(file, ctx->m2m_ctx, buf);
+}
+
+static int vidioc_dqbuf(struct file *file, void *priv, struct v4l2_buffer *buf)
+{
+ struct g2d_ctx *ctx = priv;
+ return v4l2_m2m_dqbuf(file, ctx->m2m_ctx, buf);
+}
+
+
+static int vidioc_streamon(struct file *file, void *priv,
+ enum v4l2_buf_type type)
+{
+ struct g2d_ctx *ctx = priv;
+ return v4l2_m2m_streamon(file, ctx->m2m_ctx, type);
+}
+
+static int vidioc_streamoff(struct file *file, void *priv,
+ enum v4l2_buf_type type)
+{
+ struct g2d_ctx *ctx = priv;
+ return v4l2_m2m_streamoff(file, ctx->m2m_ctx, type);
+}
+
+static int vidioc_cropcap(struct file *file, void *priv,
+ struct v4l2_cropcap *cr)
+{
+ struct g2d_ctx *ctx = priv;
+ struct g2d_frame *f;
+
+ f = 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 g2d_ctx *ctx = prv;
+ struct g2d_frame *f;
+
+ f = get_frame(ctx, cr->type);
+ if (IS_ERR(f))
+ return PTR_ERR(f);
+
+ cr->c.left = f->o_height;
+ cr->c.top = f->o_width;
+ cr->c.width = f->c_width;
+ cr->c.height = f->c_height;
+ return 0;
+}
+
+static int vidioc_try_crop(struct file *file, void *prv, struct v4l2_crop *cr)
+{
+ struct g2d_ctx *ctx = prv;
+ struct g2d_dev *dev = ctx->dev;
+ struct g2d_frame *f;
+
+ f = get_frame(ctx, cr->type);
+ if (IS_ERR(f))
+ return PTR_ERR(f);
+
+ if (cr->c.top < 0 || cr->c.left < 0) {
+ v4l2_err(&dev->v4l2_dev,
+ "doesn't support negative values for top & left\n");
+ return -EINVAL;
+ }
+
+ return 0;
+}
+
+static int vidioc_s_crop(struct file *file, void *prv, struct v4l2_crop *cr)
+{
+ struct g2d_ctx *ctx = prv;
+ struct g2d_frame *f;
+ int ret;
+
+ ret = vidioc_try_crop(file, prv, cr);
+ if (ret)
+ return ret;
+ f = get_frame(ctx, cr->type);
+ if (IS_ERR(f))
+ return PTR_ERR(f);
+
+ f->c_width = cr->c.width;
+ f->c_height = cr->c.height;
+ f->o_width = cr->c.left;
+ f->o_height = cr->c.top;
+ f->bottom = f->o_height + f->c_height;
+ f->right = f->o_width + f->c_width;
+ return 0;
+}
+
+static void g2d_lock(void *prv)
+{
+ struct g2d_ctx *ctx = prv;
+ struct g2d_dev *dev = ctx->dev;
+ mutex_lock(&dev->mutex);
+}
+
+static void g2d_unlock(void *prv)
+{
+ struct g2d_ctx *ctx = prv;
+ struct g2d_dev *dev = ctx->dev;
+ mutex_unlock(&dev->mutex);
+}
+
+static void job_abort(void *prv)
+{
+ struct g2d_ctx *ctx = prv;
+ struct g2d_dev *dev = ctx->dev;
+ int ret;
+
+ if (dev->curr == 0) /* No job currently running */
+ return;
+
+ ret = wait_event_timeout(dev->irq_queue,
+ dev->curr == 0,
+ msecs_to_jiffies(G2D_TIMEOUT));
+}
+
+static void device_run(void *prv)
+{
+ struct g2d_ctx *ctx = prv;
+ struct g2d_dev *dev = ctx->dev;
+ struct vb2_buffer *src, *dst;
+ u32 cmd = 0;
+
+ dev->curr = ctx;
+
+ src = v4l2_m2m_next_src_buf(ctx->m2m_ctx);
+ dst = v4l2_m2m_next_dst_buf(ctx->m2m_ctx);
+
+ clk_enable(dev->gate);
+ g2d_reset(dev);
+
+ g2d_set_src_size(dev, &ctx->in);
+ g2d_set_src_addr(dev, vb2_dma_contig_plane_paddr(src, 0));
+
+ g2d_set_dst_size(dev, &ctx->out);
+ g2d_set_dst_addr(dev, vb2_dma_contig_plane_paddr(dst, 0));
+
+ g2d_set_rop4(dev, ctx->rop);
+ if (ctx->in.c_width != ctx->out.c_width ||
+ ctx->in.c_height != ctx->out.c_height)
+ cmd |= g2d_cmd_stretch(1);
+ g2d_set_cmd(dev, cmd);
+ g2d_start(dev);
+}
+
+static int g2d_s_ctrl(struct v4l2_ctrl *ctrl)
+{
+ struct g2d_ctx *ctx = container_of(ctrl->handler, struct g2d_ctx,
+ ctrl_handler);
+ switch(ctrl->id) {
+ case V4L2_CID_COLORFX:
+ if (ctrl->val == V4L2_COLORFX_NEGATIVE)
+ ctx->rop = ROP4_INVERT;
+ else
+ ctx->rop = ROP4_COPY;
+ default:
+ v4l2_err(&ctx->dev->v4l2_dev, "unknown control\n");
+ return -EINVAL;
+ }
+ return 0;
+}
+
+static const struct v4l2_ctrl_ops g2d_ctrl_ops = {
+ .s_ctrl = g2d_s_ctrl,
+};
+
+
+int g2d_setup_ctrls(struct g2d_ctx *ctx)
+{
+ struct g2d_dev *dev = ctx->dev;
+
+ v4l2_ctrl_handler_init(&ctx->ctrl_handler, 1);
+ if (ctx->ctrl_handler.error) {
+ v4l2_err(&dev->v4l2_dev, "v4l2_ctrl_handler_init failed\n");
+ return ctx->ctrl_handler.error;
+ }
+
+ v4l2_ctrl_new_std_menu(
+ &ctx->ctrl_handler,
+ &g2d_ctrl_ops,
+ V4L2_CID_COLORFX,
+ V4L2_COLORFX_NEGATIVE,
+ ~((1 << V4L2_COLORFX_NONE) | (1 << V4L2_COLORFX_NEGATIVE)),
+ V4L2_COLORFX_NONE);
+
+ if (ctx->ctrl_handler.error) {
+ v4l2_err(&dev->v4l2_dev, "v4l2_ctrl_handler_init failed\n");
+ return ctx->ctrl_handler.error;
+ }
+
+ return 0;
+}
+
+static irqreturn_t g2d_isr(int irq, void *prv)
+{
+ struct g2d_dev *dev = prv;
+ struct g2d_ctx *ctx = dev->curr;
+ struct vb2_buffer *src, *dst;
+
+ g2d_clear_int(dev);
+ clk_disable(dev->gate);
+
+ BUG_ON(ctx == 0);
+
+ src = v4l2_m2m_src_buf_remove(ctx->m2m_ctx);
+ dst = v4l2_m2m_dst_buf_remove(ctx->m2m_ctx);
+
+ BUG_ON(src == 0);
+ BUG_ON(dst == 0);
+
+ v4l2_m2m_buf_done(src, VB2_BUF_STATE_DONE);
+ v4l2_m2m_buf_done(dst, VB2_BUF_STATE_DONE);
+ v4l2_m2m_job_finish(dev->m2m_dev, ctx->m2m_ctx);
+
+ dev->curr = 0;
+ wake_up(&dev->irq_queue);
+ return IRQ_HANDLED;
+}
+
+static const struct v4l2_file_operations g2d_fops = {
+ .owner = THIS_MODULE,
+ .open = g2d_open,
+ .release = g2d_release,
+ .poll = g2d_poll,
+ .unlocked_ioctl = video_ioctl2,
+ .mmap = g2d_mmap,
+};
+
+static const struct v4l2_ioctl_ops g2d_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 = vidioc_reqbufs,
+ .vidioc_querybuf = vidioc_querybuf,
+
+ .vidioc_qbuf = vidioc_qbuf,
+ .vidioc_dqbuf = vidioc_dqbuf,
+
+ .vidioc_streamon = vidioc_streamon,
+ .vidioc_streamoff = vidioc_streamoff,
+
+ .vidioc_g_crop = vidioc_g_crop,
+ .vidioc_s_crop = vidioc_s_crop,
+ .vidioc_cropcap = vidioc_cropcap,
+};
+
+static struct video_device g2d_videodev = {
+ .name = G2D_NAME,
+ .fops = &g2d_fops,
+ .ioctl_ops = &g2d_ioctl_ops,
+ .minor = -1,
+ .release = video_device_release,
+};
+
+static struct v4l2_m2m_ops g2d_m2m_ops = {
+ .device_run = device_run,
+ .job_abort = job_abort,
+ .lock = g2d_lock,
+ .unlock = g2d_unlock,
+};
+
+static int g2d_probe(struct platform_device *pdev)
+{
+ struct g2d_dev *dev;
+ struct video_device *vfd;
+ struct resource *res;
+ int ret = 0;
+
+ dev = kzalloc(sizeof(*dev), GFP_KERNEL);
+ if (!dev)
+ return -ENOMEM;
+ mutex_init(&dev->mutex);
+ atomic_set(&dev->num_inst, 0);
+ init_waitqueue_head(&dev->irq_queue);
+
+ res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+ if (!res) {
+ dev_err(&pdev->dev, "failed to find registers\n");
+ ret = -ENOENT;
+ goto free_dev;
+ }
+
+ dev->res_regs = request_mem_region(res->start, resource_size(res),
+ dev_name(&pdev->dev));
+
+ if (!dev->res_regs) {
+ dev_err(&pdev->dev, "failed to obtain register region\n");
+ ret = -ENOENT;
+ goto free_dev;
+ }
+
+ dev->regs = ioremap(res->start, resource_size(res));
+ if (!dev->regs) {
+ dev_err(&pdev->dev, "failed to map registers\n");
+ ret = -ENOENT;
+ goto rel_res_regs;
+ }
+
+ dev->clk = clk_get(&pdev->dev, "sclk_fimg2d");
+ if (IS_ERR_OR_NULL(dev->clk)) {
+ dev_err(&pdev->dev, "failed to get g2d clock\n");
+ ret = -ENXIO;
+ goto unmap_regs;
+ }
+
+ dev->gate = clk_get(&pdev->dev, "fimg2d");
+ if (IS_ERR_OR_NULL(dev->gate)) {
+ dev_err(&pdev->dev, "failed to get g2d clock gate\n");
+ ret = -ENXIO;
+ goto put_clk;
+ }
+
+ res = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
+ if (!res) {
+ dev_err(&pdev->dev, "failed to find IRQ\n");
+ ret = -ENXIO;
+ goto put_clk_gate;
+ }
+
+ dev->irq = res->start;
+
+ ret = request_irq(dev->irq, g2d_isr, 0, pdev->name, dev);
+ if (ret) {
+ dev_err(&pdev->dev, "failed to install IRQ\n");
+ goto put_clk_gate;
+ }
+
+ dev->alloc_ctx = vb2_dma_contig_init_ctx(&pdev->dev);
+ if (IS_ERR(dev->alloc_ctx)) {
+ ret = PTR_ERR(dev->alloc_ctx);
+ goto rel_irq;
+ }
+
+ ret = v4l2_device_register(&pdev->dev, &dev->v4l2_dev);
+ if (ret)
+ goto alloc_ctx_cleanup;
+ vfd = video_device_alloc();
+ if (!vfd) {
+ v4l2_err(&dev->v4l2_dev, "Failed to allocate video device\n");
+ ret = -ENOMEM;
+ goto unreg_v4l2_dev;
+ }
+ *vfd = g2d_videodev;
+ vfd->lock = &dev->mutex;
+ ret = video_register_device(vfd, VFL_TYPE_GRABBER, 0);
+ if (ret) {
+ v4l2_err(&dev->v4l2_dev, "Failed to register video device\n");
+ goto rel_vdev;
+ }
+ video_set_drvdata(vfd, dev);
+ snprintf(vfd->name, sizeof(vfd->name), "%s", g2d_videodev.name);
+ dev->vfd = vfd;
+ v4l2_info(&dev->v4l2_dev, "device registered as /dev/video%d\n",
+ vfd->num);
+ platform_set_drvdata(pdev, dev);
+ dev->m2m_dev = v4l2_m2m_init(&g2d_m2m_ops);
+ if (IS_ERR(dev->m2m_dev)) {
+ v4l2_err(&dev->v4l2_dev, "Failed to init mem2mem device\n");
+ ret = PTR_ERR(dev->m2m_dev);
+ goto unreg_video_dev;
+ }
+
+ def_frame.stride = (def_frame.width * def_frame.fmt->depth) >> 3;
+ def_frame.size = def_frame.stride * def_frame.height;
+
+ return 0;
+
+unreg_video_dev:
+ video_unregister_device(dev->vfd);
+rel_vdev:
+ video_device_release(vfd);
+unreg_v4l2_dev:
+ v4l2_device_unregister(&dev->v4l2_dev);
+alloc_ctx_cleanup:
+ vb2_dma_contig_cleanup_ctx(dev->alloc_ctx);
+rel_irq:
+ free_irq(dev->irq, dev);
+put_clk_gate:
+ clk_put(dev->gate);
+put_clk:
+ clk_put(dev->clk);
+unmap_regs:
+ iounmap(dev->regs);
+rel_res_regs:
+ release_resource(dev->res_regs);
+free_dev:
+ kfree(dev);
+ return ret;
+}
+
+static int g2d_remove(struct platform_device *pdev)
+{
+ struct g2d_dev *dev = (struct g2d_dev *)platform_get_drvdata(pdev);
+
+ v4l2_info(&dev->v4l2_dev, "Removing " G2D_NAME);
+ v4l2_m2m_release(dev->m2m_dev);
+ video_unregister_device(dev->vfd);
+ v4l2_device_unregister(&dev->v4l2_dev);
+ vb2_dma_contig_cleanup_ctx(dev->alloc_ctx);
+ free_irq(dev->irq, dev);
+ clk_put(dev->gate);
+ clk_put(dev->clk);
+ iounmap(dev->regs);
+ release_resource(dev->res_regs);
+ kfree(dev);
+ return 0;
+}
+
+static struct platform_driver g2d_pdrv = {
+ .probe = g2d_probe,
+ .remove = g2d_remove,
+ .driver = {
+ .name = G2D_NAME,
+ .owner = THIS_MODULE,
+ },
+};
+
+static void __exit g2d_exit(void)
+{
+ platform_driver_unregister(&g2d_pdrv);
+};
+
+static int __init g2d_init(void)
+{
+ int ret = 0;
+
+ ret = platform_driver_register(&g2d_pdrv);
+ return ret;
+};
+
+module_init(g2d_init);
+module_exit(g2d_exit);
+
+MODULE_AUTHOR("Kamil Debski <k.debski@xxxxxxxxxxx>");
+MODULE_DESCRIPTION("S5P G2D 2d graphics accelerator driver");
+MODULE_LICENSE("GPL");
diff --git a/drivers/media/video/s5p-g2d/g2d.h b/drivers/media/video/s5p-g2d/g2d.h
new file mode 100644
index 0000000..54d755a
--- /dev/null
+++ b/drivers/media/video/s5p-g2d/g2d.h
@@ -0,0 +1,132 @@
+/*
+ * Samsung S5P G2D - 2D Graphics Accelerator Driver
+ *
+ * Copyright (c) 20011 Samsung Electronics Co., Ltd.
+ * Kamil Debski, <k.debski@xxxxxxxxxxx>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the
+ * License, or (at your option) any later version
+ */
+
+#include <media/v4l2-device.h>
+#include <media/v4l2-ctrls.h>
+
+#define G2D_NAME "s5p-g2d"
+
+/**
+ * struct g2d_dev - contains device level parameters
+ *
+ * @v4l2_dev: v4l2_device
+ * @m2m_dev: m2m_device
+ * @vfd: video device
+ * @mutex: mutex used by the driver
+ * @num_inst: number of opened instances
+ * @alloc_ctx: alloc_ctx used by the allocator
+ * @res_regs: resource used to access the device registers
+ * @regs: address of the device registers
+ * @clk: device clock
+ * @gate: device clok gate
+ * @curr: address of the context currently processed
+ * @irq: interrupt resource
+ * @irq_queue: interrupt queue
+ */
+struct g2d_dev {
+ struct v4l2_device v4l2_dev;
+ struct v4l2_m2m_dev *m2m_dev;
+ struct video_device *vfd;
+ struct mutex mutex;
+ atomic_t num_inst;
+ struct vb2_alloc_ctx *alloc_ctx;
+ struct resource *res_regs;
+ void __iomem *regs;
+ struct clk *clk;
+ struct clk *gate;
+ struct g2d_ctx *curr;
+ int irq;
+ wait_queue_head_t irq_queue;
+};
+
+/**
+ * struct g2d_frame - parameters of the image to be processed
+ *
+ * @width: width
+ * @height: height
+ * @c_width: crop width
+ * @c_height: crop height
+ * @o_width: crop vertical offset
+ * @o_height: crop horizontal offset
+ * @fmt: format of the image
+ * @stride: calculated stride
+ * @bottom: bottom row of the crop
+ * @right: right column of the crop
+ * @size: size of the image
+ */
+struct g2d_frame {
+ /* Original dimensions */
+ u32 width;
+ u32 height;
+ /* Crop size */
+ u32 c_width;
+ u32 c_height;
+ /* Offset */
+ u32 o_width;
+ u32 o_height;
+ /* Image format */
+ struct g2d_fmt *fmt;
+ /* Parameters that can be calculated once and reused */
+ u32 stride;
+ u32 bottom;
+ u32 right;
+ u32 size;
+};
+
+/**
+ * struct g2d_ctx - contains context level parameters
+ *
+ * @fh: v4l2 file handle of the open context
+ * @dev: address of the g2d_dev structure used by the device
+ * @m2m_ctx: m2m context
+ * @in: input frame parameters
+ * @out: output frame parameters
+ * @ctrl_handler: control framework handler for this context
+ * @rop: value of the desired ROP4 operation
+*/
+struct g2d_ctx {
+ struct v4l2_fh fh;
+ struct g2d_dev *dev;
+ struct v4l2_m2m_ctx *m2m_ctx;
+ struct g2d_frame in;
+ struct g2d_frame out;
+ struct v4l2_ctrl_handler ctrl_handler;
+ u32 rop;
+};
+
+/**
+ * struct g2d_fmt - description of the image format
+ *
+ * @name: name of the format
+ * @fourcc: fourcc identifier
+ * @depth: size in bytes of each pixel
+ * @hw: value that describes the format in the hardware
+ */
+struct g2d_fmt {
+ char *name;
+ u32 fourcc;
+ int depth;
+ u32 hw;
+};
+
+
+void g2d_reset(struct g2d_dev *d);
+void g2d_set_src_size(struct g2d_dev *d, struct g2d_frame *f);
+void g2d_set_src_addr(struct g2d_dev *d, dma_addr_t a);
+void g2d_set_dst_size(struct g2d_dev *d, struct g2d_frame *f);
+void g2d_set_dst_addr(struct g2d_dev *d, dma_addr_t a);
+void g2d_start(struct g2d_dev *d);
+void g2d_clear_int(struct g2d_dev *d);
+void g2d_set_rop4(struct g2d_dev *d, u32 r);
+u32 g2d_cmd_stretch(u32 e);
+void g2d_set_cmd(struct g2d_dev *d, u32 c);
+
--
1.6.3.3
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