[media] v4l: add G2D driver for s5p device family
authorKamil Debski <k.debski@samsung.com>
Thu, 6 Oct 2011 14:32:12 +0000 (11:32 -0300)
committerMauro Carvalho Chehab <mchehab@redhat.com>
Tue, 8 Nov 2011 12:11:16 +0000 (10:11 -0200)
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@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
drivers/media/video/Kconfig
drivers/media/video/Makefile
drivers/media/video/s5p-g2d/Makefile [new file with mode: 0644]
drivers/media/video/s5p-g2d/g2d-hw.c [new file with mode: 0644]
drivers/media/video/s5p-g2d/g2d-regs.h [new file with mode: 0644]
drivers/media/video/s5p-g2d/g2d.c [new file with mode: 0644]
drivers/media/video/s5p-g2d/g2d.h [new file with mode: 0644]

index b303a3f..d960656 100644 (file)
@@ -1098,6 +1098,15 @@ 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"
index 117f9c4..ddeaa6c 100644 (file)
@@ -180,6 +180,8 @@ 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-$(CONFIG_VIDEO_SH_VOU)             += sh_vou.o
diff --git a/drivers/media/video/s5p-g2d/Makefile b/drivers/media/video/s5p-g2d/Makefile
new file mode 100644 (file)
index 0000000..2c48c41
--- /dev/null
@@ -0,0 +1,3 @@
+s5p-g2d-objs := g2d.o g2d-hw.o
+
+obj-$(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 (file)
index 0000000..e5249f3
--- /dev/null
@@ -0,0 +1,106 @@
+/*
+ * Samsung S5P G2D - 2D Graphics Accelerator Driver
+ *
+ * Copyright (c) 2011 Samsung Electronics Co., Ltd.
+ * Kamil Debski, <k.debski@samsung.com>
+ *
+ * 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/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);
+}
+
+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);
+}
+
+void g2d_set_src_addr(struct g2d_dev *d, dma_addr_t a)
+{
+       w(a, SRC_BASE_ADDR_REG);
+}
+
+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);
+}
+
+void g2d_set_dst_addr(struct g2d_dev *d, dma_addr_t a)
+{
+       w(a, DST_BASE_ADDR_REG);
+}
+
+void g2d_set_rop4(struct g2d_dev *d, u32 r)
+{
+       w(r, ROP4_REG);
+}
+
+u32 g2d_cmd_stretch(u32 e)
+{
+       e &= 1;
+       return e << 4;
+}
+
+void g2d_set_cmd(struct g2d_dev *d, u32 c)
+{
+       w(c, BITBLT_COMMAND_REG);
+}
+
+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);
+}
+
+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 (file)
index 0000000..02e1cf5
--- /dev/null
@@ -0,0 +1,115 @@
+/*
+ * Samsung S5P G2D - 2D Graphics Accelerator Driver
+ *
+ * Copyright (c) 2011 Samsung Electronics Co., Ltd.
+ * Kamil Debski, <k.debski@samsung.com>
+ *
+ * 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  /* Dest 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 (Dest) */
+#define DST_SELECT_REG         0x0400  /* Dest Image Selection reg */
+#define DST_BASE_ADDR_REG      0x0404  /* Dest Image Base Address reg */
+#define DST_STRIDE_REG         0x0408  /* Dest Stride reg */
+#define DST_COLOR_MODE_REG     0x040C  /* Dest Image Color Mode reg */
+#define DST_LEFT_TOP_REG       0x0410  /* Dest Left Top Coordinate reg */
+#define DST_RIGHT_BOTTOM_REG   0x0414  /* Dest 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 Colorkey control reg */
+#define SRC_COLORKEY_DR_MIN_REG        0x0714  /* Src Colorkey Decision Reference
+                                                               Min reg */
+#define SRC_COLORKEY_DR_MAX_REG        0x0718  /* Src Colorkey Decision Reference
+                                                               Max reg */
+#define DST_COLORKEY_CTRL_REG  0x071C  /* Dest Colorkey control reg */
+#define DST_COLORKEY_DR_MIN_REG        0x0720  /* Dest Colorkey Decision Reference
+                                                               Min reg */
+#define DST_COLORKEY_DR_MAX_REG        0x0724  /* Dest Colorkey Decision Reference
+                                                               Max reg */
+
+/* Color mode values */
+
+#define ORDER_XRGB             0
+#define ORDER_RGBX             1
+#define ORDER_XBGR             2
+#define ORDER_BGRX             3
+
+#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
+
+#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
+
+#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 (file)
index 0000000..1f156c8
--- /dev/null
@@ -0,0 +1,824 @@
+/*
+ * Samsung S5P G2D - 2D Graphics Accelerator Driver
+ *
+ * Copyright (c) 2011 Samsung Electronics Co., Ltd.
+ * Kamil Debski, <k.debski@samsung.com>
+ *
+ * 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   = "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   = "XRGB_4444",
+               .fourcc = V4L2_PIX_FMT_RGB444,
+               .depth  = 16,
+               .hw     = COLOR_MODE(ORDER_XRGB, MODE_XRGB_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)
+
+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,
+};
+
+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;
+}
+
+
+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, const struct v4l2_format *fmt,
+                          unsigned int *nbuffers, unsigned int *nplanes,
+                          unsigned int 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);
+}
+
+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 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);
+
+       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);
+
+       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_dma_addr(src, 0));
+
+       g2d_set_dst_size(dev, &ctx->out);
+       g2d_set_dst_addr(dev, vb2_dma_contig_plane_dma_addr(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 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;
+       spin_lock_init(&dev->irqlock);
+       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;
+
+       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@samsung.com>");
+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 (file)
index 0000000..5eae901
--- /dev/null
@@ -0,0 +1,83 @@
+/*
+ * Samsung S5P G2D - 2D Graphics Accelerator Driver
+ *
+ * Copyright (c) 2011 Samsung Electronics Co., Ltd.
+ * Kamil Debski, <k.debski@samsung.com>
+ *
+ * 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 {
+       struct v4l2_device      v4l2_dev;
+       struct v4l2_m2m_dev     *m2m_dev;
+       struct video_device     *vfd;
+       struct mutex            mutex;
+       spinlock_t              irqlock;
+       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 {
+       /* 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;
+       /* Variables that can calculated once and reused */
+       u32     stride;
+       u32     bottom;
+       u32     right;
+       u32     size;
+};
+
+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 {
+       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);
+
+