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/* linux/drivers/media/video/samsung/fimc/fimc_overlay.c
*
* Copyright (c) 2010 Samsung Electronics Co., Ltd.
* http://www.samsung.com/
*
* V4L2 Overlay device support file for Samsung Camera Interface (FIMC) driver
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*/
#include <linux/slab.h>
#include <linux/bootmem.h>
#include <linux/string.h>
#include <linux/platform_device.h>
#include <linux/io.h>
#include <linux/uaccess.h>
#include <plat/media.h>
#include "fimc.h"
int fimc_try_fmt_overlay(struct file *filp, void *fh, struct v4l2_format *f)
{
struct fimc_control *ctrl = ((struct fimc_prv_data *)fh)->ctrl;
int ctx_id = ((struct fimc_prv_data *)fh)->ctx_id;
struct fimc_ctx *ctx;
u32 is_rotate = 0;
ctx = &ctrl->out->ctx[ctx_id];
fimc_info1("%s: top(%d) left(%d) width(%d) height(%d)\n", __func__,
f->fmt.win.w.top, f->fmt.win.w.left,
f->fmt.win.w.width, f->fmt.win.w.height);
if (ctx->overlay.mode == FIMC_OVLY_NONE_SINGLE_BUF ||
(ctx->overlay.mode == FIMC_OVLY_NONE_MULTI_BUF))
return 0;
/* Check Overlay Size : Overlay size must be smaller than LCD size. */
is_rotate = fimc_mapping_rot_flip(ctx->rotate, ctx->flip);
if (is_rotate & FIMC_ROT) { /* Landscape mode */
if (f->fmt.win.w.width > ctrl->fb.lcd_vres) {
fimc_warn("The width is changed %d -> %d\n",
f->fmt.win.w.width, ctrl->fb.lcd_vres);
f->fmt.win.w.width = ctrl->fb.lcd_vres;
}
if (f->fmt.win.w.height > ctrl->fb.lcd_hres) {
fimc_warn("The height is changed %d -> %d\n",
f->fmt.win.w.height, ctrl->fb.lcd_hres);
f->fmt.win.w.height = ctrl->fb.lcd_hres;
}
} else { /* Portrait mode */
if (f->fmt.win.w.width > ctrl->fb.lcd_hres) {
fimc_warn("The width is changed %d -> %d\n",
f->fmt.win.w.width, ctrl->fb.lcd_hres);
f->fmt.win.w.width = ctrl->fb.lcd_hres;
}
if (f->fmt.win.w.height > ctrl->fb.lcd_vres) {
fimc_warn("The height is changed %d -> %d\n",
f->fmt.win.w.height, ctrl->fb.lcd_vres);
f->fmt.win.w.height = ctrl->fb.lcd_vres;
}
}
return 0;
}
int fimc_g_fmt_vid_overlay(struct file *filp, void *fh, struct v4l2_format *f)
{
struct fimc_control *ctrl = ((struct fimc_prv_data *)fh)->ctrl;
int ctx_id = ((struct fimc_prv_data *)fh)->ctx_id;
struct fimc_ctx *ctx;
ctx = &ctrl->out->ctx[ctx_id];
fimc_info1("%s: called\n", __func__);
f->fmt.win = ctx->win;
return 0;
}
static int fimc_check_pos(struct fimc_control *ctrl,
struct fimc_ctx *ctx,
struct v4l2_format *f)
{
if (ctx->win.w.width != f->fmt.win.w.width) {
fimc_err("%s: cannot change width(%d,%d)\n", __func__,
ctx->win.w.width, f->fmt.win.w.width);
return -EINVAL;
} else if (ctx->win.w.height != f->fmt.win.w.height) {
fimc_err("%s: cannot change height(%d,%d)\n", __func__,
ctx->win.w.height, f->fmt.win.w.height);
return -EINVAL;
}
return 0;
}
static int fimc_change_fifo_position(struct fimc_control *ctrl,
struct fimc_ctx *ctx) {
struct v4l2_rect fimd_rect;
struct s3cfb_user_window window;
int ret = -1;
memset(&fimd_rect, 0, sizeof(struct v4l2_rect));
ret = fimc_fimd_rect(ctrl, ctx, &fimd_rect);
if (ret < 0) {
fimc_err("fimc_fimd_rect fail\n");
return -EINVAL;
}
/* Update WIN position */
window.x = fimd_rect.left;
window.y = fimd_rect.top;
ret = s3cfb_direct_ioctl(ctrl->id, S3CFB_WIN_POSITION,
(unsigned long)&window);
if (ret < 0) {
fimc_err("direct_ioctl(S3CFB_WIN_POSITION) fail\n");
return -EINVAL;
}
return 0;
}
int fimc_s_fmt_vid_overlay(struct file *filp, void *fh, struct v4l2_format *f)
{
struct fimc_control *ctrl = ((struct fimc_prv_data *)fh)->ctrl;
int ctx_id = ((struct fimc_prv_data *)fh)->ctx_id;
struct fimc_ctx *ctx;
int ret = -1;
ctx = &ctrl->out->ctx[ctx_id];
fimc_info1("%s: called\n", __func__);
switch (ctx->status) {
case FIMC_STREAMON:
ret = fimc_check_pos(ctrl, ctx, f);
if (ret < 0) {
fimc_err("When FIMC is running, "
"you can only move the position.\n");
return -EBUSY;
}
ret = fimc_try_fmt_overlay(filp, fh, f);
if (ret < 0)
return ret;
ctx->win = f->fmt.win;
fimc_change_fifo_position(ctrl, ctx);
break;
case FIMC_STREAMOFF:
ret = fimc_try_fmt_overlay(filp, fh, f);
if (ret < 0)
return ret;
ctx->win = f->fmt.win;
break;
default:
fimc_err("FIMC is running\n");
fimc_err("%s::FIMC is running(%d)\n", __func__, ctx->status);
return -EBUSY;
}
return ret;
}
int fimc_g_fbuf(struct file *filp, void *fh, struct v4l2_framebuffer *fb)
{
struct fimc_control *ctrl = ((struct fimc_prv_data *)fh)->ctrl;
int ctx_id = ((struct fimc_prv_data *)fh)->ctx_id;
struct fimc_ctx *ctx;
u32 bpp = 1, format;
ctx = &ctrl->out->ctx[ctx_id];
fimc_info1("%s: called\n", __func__);
fb->capability = ctx->fbuf.capability;
fb->flags = 0;
fb->base = ctx->fbuf.base;
fb->fmt.width = ctx->fbuf.fmt.width;
fb->fmt.height = ctx->fbuf.fmt.height;
fb->fmt.pixelformat = ctx->fbuf.fmt.pixelformat;
format = ctx->fbuf.fmt.pixelformat;
switch (format) {
case V4L2_PIX_FMT_YUV420: /* fall through */
case V4L2_PIX_FMT_YVU420: /* fall through */
case V4L2_PIX_FMT_NV12:
bpp = 1;
break;
case V4L2_PIX_FMT_RGB565:
bpp = 2;
break;
case V4L2_PIX_FMT_RGB32:
bpp = 4;
break;
}
ctx->fbuf.fmt.bytesperline = fb->fmt.width * bpp;
fb->fmt.bytesperline = ctx->fbuf.fmt.bytesperline;
fb->fmt.sizeimage = ctx->fbuf.fmt.sizeimage;
fb->fmt.colorspace = V4L2_COLORSPACE_SMPTE170M;
fb->fmt.priv = 0;
return 0;
}
int fimc_s_fbuf(struct file *filp, void *fh, struct v4l2_framebuffer *fb)
{
struct fimc_control *ctrl = ((struct fimc_prv_data *)fh)->ctrl;
int ctx_id = ((struct fimc_prv_data *)fh)->ctx_id;
struct fimc_ctx *ctx;
u32 bpp = 1;
u32 format = fb->fmt.pixelformat;
ctx = &ctrl->out->ctx[ctx_id];
fimc_info1("%s: called. width(%d), height(%d)\n",
__func__, fb->fmt.width, fb->fmt.height);
ctx->fbuf.capability = V4L2_FBUF_CAP_EXTERNOVERLAY;
ctx->fbuf.flags = 0;
ctx->fbuf.base = fb->base;
if (ctx->overlay.mode == FIMC_OVLY_NONE_MULTI_BUF) {
ctx->fbuf.fmt.width = fb->fmt.width;
ctx->fbuf.fmt.height = fb->fmt.height;
ctx->fbuf.fmt.pixelformat = fb->fmt.pixelformat;
switch (format) {
case V4L2_PIX_FMT_NV21: /* fall through */
case V4L2_PIX_FMT_YUV420: /* fall through */
case V4L2_PIX_FMT_NV12:
bpp = 1;
break;
case V4L2_PIX_FMT_RGB565:
bpp = 2;
break;
case V4L2_PIX_FMT_RGB32:
bpp = 4;
break;
}
ctx->fbuf.fmt.bytesperline = fb->fmt.width * bpp;
ctx->fbuf.fmt.sizeimage = fb->fmt.sizeimage;
ctx->fbuf.fmt.colorspace = V4L2_COLORSPACE_SMPTE170M;
ctx->fbuf.fmt.priv = 0;
} else if (fb->base) {
ctx->fbuf.fmt.width = fb->fmt.width;
ctx->fbuf.fmt.height = fb->fmt.height;
ctx->fbuf.fmt.pixelformat = fb->fmt.pixelformat;
switch (format) {
case V4L2_PIX_FMT_NV21: /* fall through */
case V4L2_PIX_FMT_YUV420: /* fall through */
case V4L2_PIX_FMT_YVU420: /* fall through */
case V4L2_PIX_FMT_NV12:
bpp = 1;
break;
case V4L2_PIX_FMT_RGB565:
bpp = 2;
break;
case V4L2_PIX_FMT_RGB32:
bpp = 4;
break;
}
ctx->fbuf.fmt.bytesperline = fb->fmt.width * bpp;
ctx->fbuf.fmt.sizeimage = fb->fmt.sizeimage;
ctx->fbuf.fmt.colorspace = V4L2_COLORSPACE_SMPTE170M;
ctx->fbuf.fmt.priv = 0;
ctx->overlay.mode = FIMC_OVLY_NONE_SINGLE_BUF;
} else {
ctx->overlay.mode = FIMC_OVLY_NOT_FIXED;
}
return 0;
}
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