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drm/exynos/exynos_fimg2d.c

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/*
* Copyright (C) 2013 Samsung Electronics Co.Ltd
* Authors:
* Inki Dae <inki.dae@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.
*
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <errno.h>
#include <assert.h>
#include <sys/mman.h>
#include <linux/stddef.h>
#include <xf86drm.h>
#include "libdrm_macros.h"
#include "exynos_drm.h"
#include "fimg2d_reg.h"
#include "exynos_fimg2d.h"
#define SET_BF(val, sc, si, scsa, scda, dc, di, dcsa, dcda) \
val.data.src_coeff = sc; \
val.data.inv_src_color_coeff = si; \
val.data.src_coeff_src_a = scsa; \
val.data.src_coeff_dst_a = scda; \
val.data.dst_coeff = dc; \
val.data.inv_dst_color_coeff = di; \
val.data.dst_coeff_src_a = dcsa; \
val.data.dst_coeff_dst_a = dcda;
#define MIN(a, b) ((a) < (b) ? (a) : (b))
#define MSG_PREFIX "exynos/fimg2d: "
#define G2D_MAX_CMD_NR 64
#define G2D_MAX_GEM_CMD_NR 64
#define G2D_MAX_CMD_LIST_NR 64
struct g2d_context {
int fd;
unsigned int major;
unsigned int minor;
struct drm_exynos_g2d_cmd cmd[G2D_MAX_CMD_NR];
struct drm_exynos_g2d_cmd cmd_buf[G2D_MAX_GEM_CMD_NR];
unsigned int cmd_nr;
unsigned int cmd_buf_nr;
unsigned int cmdlist_nr;
void *event_userdata;
};
enum g2d_base_addr_reg {
g2d_dst = 0,
g2d_src
};
enum e_g2d_dir_mode {
G2D_DIR_MODE_POSITIVE = 0,
G2D_DIR_MODE_NEGATIVE = 1
};
union g2d_direction_val {
unsigned int val[2];
struct {
/* SRC_MSK_DIRECT_REG [0:1] (source) */
enum e_g2d_dir_mode src_x_direction:1;
enum e_g2d_dir_mode src_y_direction:1;
/* SRC_MSK_DIRECT_REG [2:3] */
unsigned int reversed1:2;
/* SRC_MSK_DIRECT_REG [4:5] (mask) */
enum e_g2d_dir_mode mask_x_direction:1;
enum e_g2d_dir_mode mask_y_direction:1;
/* SRC_MSK_DIRECT_REG [6:31] */
unsigned int padding1:26;
/* DST_PAT_DIRECT_REG [0:1] (destination) */
enum e_g2d_dir_mode dst_x_direction:1;
enum e_g2d_dir_mode dst_y_direction:1;
/* DST_PAT_DIRECT_REG [2:3] */
unsigned int reversed2:2;
/* DST_PAT_DIRECT_REG [4:5] (pattern) */
enum e_g2d_dir_mode pat_x_direction:1;
enum e_g2d_dir_mode pat_y_direction:1;
/* DST_PAT_DIRECT_REG [6:31] */
unsigned int padding2:26;
} data;
};
static unsigned int g2d_get_scaling(unsigned int src, unsigned int dst)
{
/*
* The G2D 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 << 16) / dst);
}
static unsigned int g2d_get_blend_op(enum e_g2d_op op)
{
union g2d_blend_func_val val;
val.val = 0;
/*
* The switch statement is missing the default branch since
* we assume that the caller checks the blending operation
* via g2d_validate_blending_op() first.
*/
switch (op) {
case G2D_OP_CLEAR:
case G2D_OP_DISJOINT_CLEAR:
case G2D_OP_CONJOINT_CLEAR:
SET_BF(val, G2D_COEFF_MODE_ZERO, 0, 0, 0, G2D_COEFF_MODE_ZERO,
0, 0, 0);
break;
case G2D_OP_SRC:
case G2D_OP_DISJOINT_SRC:
case G2D_OP_CONJOINT_SRC:
SET_BF(val, G2D_COEFF_MODE_ONE, 0, 0, 0, G2D_COEFF_MODE_ZERO,
0, 0, 0);
break;
case G2D_OP_DST:
case G2D_OP_DISJOINT_DST:
case G2D_OP_CONJOINT_DST:
SET_BF(val, G2D_COEFF_MODE_ZERO, 0, 0, 0, G2D_COEFF_MODE_ONE,
0, 0, 0);
break;
case G2D_OP_OVER:
SET_BF(val, G2D_COEFF_MODE_ONE, 0, 0, 0,
G2D_COEFF_MODE_SRC_ALPHA, 1, 0, 0);
break;
case G2D_OP_INTERPOLATE:
SET_BF(val, G2D_COEFF_MODE_SRC_ALPHA, 0, 0, 0,
G2D_COEFF_MODE_SRC_ALPHA, 1, 0, 0);
break;
}
return val.val;
}
/*
* g2d_check_space - check if command buffers have enough space left.
*
* @ctx: a pointer to g2d_context structure.
* @num_cmds: number of (regular) commands.
* @num_gem_cmds: number of GEM commands.
*/
static unsigned int g2d_check_space(const struct g2d_context *ctx,
unsigned int num_cmds, unsigned int num_gem_cmds)
{
if (ctx->cmd_nr + num_cmds >= G2D_MAX_CMD_NR ||
ctx->cmd_buf_nr + num_gem_cmds >= G2D_MAX_GEM_CMD_NR)
return 1;
else
return 0;
}
/*
* g2d_validate_select_mode - validate select mode.
*
* @mode: the mode to validate
*
* Returns zero for an invalid mode and one otherwise.
*/
static int g2d_validate_select_mode(
enum e_g2d_select_mode mode)
{
switch (mode) {
case G2D_SELECT_MODE_NORMAL:
case G2D_SELECT_MODE_FGCOLOR:
case G2D_SELECT_MODE_BGCOLOR:
return 1;
}
return 0;
}
/*
* g2d_validate_blending_op - validate blending operation.
*
* @operation: the operation to validate
*
* Returns zero for an invalid mode and one otherwise.
*/
static int g2d_validate_blending_op(
enum e_g2d_op operation)
{
switch (operation) {
case G2D_OP_CLEAR:
case G2D_OP_SRC:
case G2D_OP_DST:
case G2D_OP_OVER:
case G2D_OP_INTERPOLATE:
case G2D_OP_DISJOINT_CLEAR:
case G2D_OP_DISJOINT_SRC:
case G2D_OP_DISJOINT_DST:
case G2D_OP_CONJOINT_CLEAR:
case G2D_OP_CONJOINT_SRC:
case G2D_OP_CONJOINT_DST:
return 1;
}
return 0;
}
/*
* g2d_add_cmd - set given command and value to user side command buffer.
*
* @ctx: a pointer to g2d_context structure.
* @cmd: command data.
* @value: value data.
*
* The caller has to make sure that the commands buffers have enough space
* left to hold the command. Use g2d_check_space() to ensure this.
*/
static void g2d_add_cmd(struct g2d_context *ctx, unsigned long cmd,
unsigned long value)
{
switch (cmd & ~(G2D_BUF_USERPTR)) {
case SRC_BASE_ADDR_REG:
case SRC_PLANE2_BASE_ADDR_REG:
case DST_BASE_ADDR_REG:
case DST_PLANE2_BASE_ADDR_REG:
case PAT_BASE_ADDR_REG:
case MASK_BASE_ADDR_REG:
assert(ctx->cmd_buf_nr < G2D_MAX_GEM_CMD_NR);
ctx->cmd_buf[ctx->cmd_buf_nr].offset = cmd;
ctx->cmd_buf[ctx->cmd_buf_nr].data = value;
ctx->cmd_buf_nr++;
break;
default:
assert(ctx->cmd_nr < G2D_MAX_CMD_NR);
ctx->cmd[ctx->cmd_nr].offset = cmd;
ctx->cmd[ctx->cmd_nr].data = value;
ctx->cmd_nr++;
break;
}
}
/*
* g2d_add_base_addr - helper function to set dst/src base address register.
*
* @ctx: a pointer to g2d_context structure.
* @img: a pointer to the dst/src g2d_image structure.
* @reg: the register that should be set.
*/
static void g2d_add_base_addr(struct g2d_context *ctx, struct g2d_image *img,
enum g2d_base_addr_reg reg)
{
const unsigned long cmd = (reg == g2d_dst) ?
DST_BASE_ADDR_REG : SRC_BASE_ADDR_REG;
if (img->buf_type == G2D_IMGBUF_USERPTR)
g2d_add_cmd(ctx, cmd | G2D_BUF_USERPTR,
(unsigned long)&img->user_ptr[0]);
else
g2d_add_cmd(ctx, cmd, img->bo[0]);
}
/*
* g2d_set_direction - setup direction register (useful for overlapping blits).
*
* @ctx: a pointer to g2d_context structure.
* @dir: a pointer to the g2d_direction_val structure.
*/
static void g2d_set_direction(struct g2d_context *ctx,
const union g2d_direction_val *dir)
{
g2d_add_cmd(ctx, SRC_MASK_DIRECT_REG, dir->val[0]);
g2d_add_cmd(ctx, DST_PAT_DIRECT_REG, dir->val[1]);
}
/*
* g2d_reset - reset fimg2d hardware.
*
* @ctx: a pointer to g2d_context structure.
*
*/
static void g2d_reset(struct g2d_context *ctx)
{
ctx->cmd_nr = 0;
ctx->cmd_buf_nr = 0;
g2d_add_cmd(ctx, SOFT_RESET_REG, 0x01);
}
/*
* g2d_flush - submit all commands and values in user side command buffer
* to command queue aware of fimg2d dma.
*
* @ctx: a pointer to g2d_context structure.
*
* This function should be called after all commands and values to user
* side command buffer are set. It submits that buffer to the kernel side driver.
*/
static int g2d_flush(struct g2d_context *ctx)
{
int ret;
struct drm_exynos_g2d_set_cmdlist cmdlist = {0};
if (ctx->cmd_nr == 0 && ctx->cmd_buf_nr == 0)
return 0;
if (ctx->cmdlist_nr >= G2D_MAX_CMD_LIST_NR) {
fprintf(stderr, MSG_PREFIX "command list overflow.\n");
return -EINVAL;
}
cmdlist.cmd = (uint64_t)(uintptr_t)&ctx->cmd[0];
cmdlist.cmd_buf = (uint64_t)(uintptr_t)&ctx->cmd_buf[0];
cmdlist.cmd_nr = ctx->cmd_nr;
cmdlist.cmd_buf_nr = ctx->cmd_buf_nr;
if (ctx->event_userdata) {
cmdlist.event_type = G2D_EVENT_NONSTOP;
cmdlist.user_data = (uint64_t)(uintptr_t)(ctx->event_userdata);
ctx->event_userdata = NULL;
} else {
cmdlist.event_type = G2D_EVENT_NOT;
cmdlist.user_data = 0;
}
ctx->cmd_nr = 0;
ctx->cmd_buf_nr = 0;
ret = drmIoctl(ctx->fd, DRM_IOCTL_EXYNOS_G2D_SET_CMDLIST, &cmdlist);
if (ret < 0) {
fprintf(stderr, MSG_PREFIX "failed to set cmdlist.\n");
return ret;
}
ctx->cmdlist_nr++;
return ret;
}
/**
* g2d_init - create a new g2d context and get hardware version.
*
* fd: a file descriptor to an opened drm device.
*/
struct g2d_context *g2d_init(int fd)
{
struct drm_exynos_g2d_get_ver ver;
struct g2d_context *ctx;
int ret;
ctx = calloc(1, sizeof(*ctx));
if (!ctx) {
fprintf(stderr, MSG_PREFIX "failed to allocate context.\n");
return NULL;
}
ctx->fd = fd;
ret = drmIoctl(fd, DRM_IOCTL_EXYNOS_G2D_GET_VER, &ver);
if (ret < 0) {
fprintf(stderr, MSG_PREFIX "failed to get version.\n");
free(ctx);
return NULL;
}
ctx->major = ver.major;
ctx->minor = ver.minor;
printf(MSG_PREFIX "G2D version (%d.%d).\n", ctx->major, ctx->minor);
return ctx;
}
void g2d_fini(struct g2d_context *ctx)
{
free(ctx);
}
/**
* g2d_config_event - setup userdata configuration for a g2d event.
* The next invocation of a g2d call (e.g. g2d_solid_fill) is
* then going to flag the command buffer as 'nonstop'.
* Completion of the command buffer execution can then be
* determined by using drmHandleEvent on the DRM fd.
* The userdata is 'consumed' in the process.
*
* @ctx: a pointer to g2d_context structure.
* @userdata: a pointer to the user data
*/
void g2d_config_event(struct g2d_context *ctx, void *userdata)
{
ctx->event_userdata = userdata;
}
/**
* g2d_exec - start the dma to process all commands summited by g2d_flush().
*
* @ctx: a pointer to g2d_context structure.
*/
int g2d_exec(struct g2d_context *ctx)
{
struct drm_exynos_g2d_exec exec;
int ret;
if (ctx->cmdlist_nr == 0)
return -EINVAL;
exec.async = 0;
ret = drmIoctl(ctx->fd, DRM_IOCTL_EXYNOS_G2D_EXEC, &exec);
if (ret < 0) {
fprintf(stderr, MSG_PREFIX "failed to execute.\n");
return ret;
}
ctx->cmdlist_nr = 0;
return ret;
}
/**
* g2d_solid_fill - fill given buffer with given color data.
*
* @ctx: a pointer to g2d_context structure.
* @img: a pointer to g2d_image structure including image and buffer
* information.
* @x: x start position to buffer filled with given color data.
* @y: y start position to buffer filled with given color data.
* @w: width value to buffer filled with given color data.
* @h: height value to buffer filled with given color data.
*/
int
g2d_solid_fill(struct g2d_context *ctx, struct g2d_image *img,
unsigned int x, unsigned int y, unsigned int w,
unsigned int h)
{
union g2d_bitblt_cmd_val bitblt;
union g2d_point_val pt;
if (g2d_check_space(ctx, 7, 1))
return -ENOSPC;
g2d_add_cmd(ctx, DST_SELECT_REG, G2D_SELECT_MODE_NORMAL);
g2d_add_cmd(ctx, DST_COLOR_MODE_REG, img->color_mode);
g2d_add_base_addr(ctx, img, g2d_dst);
g2d_add_cmd(ctx, DST_STRIDE_REG, img->stride);
if (x + w > img->width)
w = img->width - x;
if (y + h > img->height)
h = img->height - y;
pt.data.x = x;
pt.data.y = y;
g2d_add_cmd(ctx, DST_LEFT_TOP_REG, pt.val);
pt.data.x = x + w;
pt.data.y = y + h;
g2d_add_cmd(ctx, DST_RIGHT_BOTTOM_REG, pt.val);
g2d_add_cmd(ctx, SF_COLOR_REG, img->color);
bitblt.val = 0;
bitblt.data.fast_solid_color_fill_en = 1;
g2d_add_cmd(ctx, BITBLT_COMMAND_REG, bitblt.val);
return g2d_flush(ctx);
}
/**
* g2d_copy - copy contents in source buffer to destination buffer.
*
* @ctx: a pointer to g2d_context structure.
* @src: a pointer to g2d_image structure including image and buffer
* information to source.
* @dst: a pointer to g2d_image structure including image and buffer
* information to destination.
* @src_x: x start position to source buffer.
* @src_y: y start position to source buffer.
* @dst_x: x start position to destination buffer.
* @dst_y: y start position to destination buffer.
* @w: width value to source and destination buffers.
* @h: height value to source and destination buffers.
*/
int
g2d_copy(struct g2d_context *ctx, struct g2d_image *src,
struct g2d_image *dst, unsigned int src_x, unsigned int src_y,
unsigned int dst_x, unsigned dst_y, unsigned int w,
unsigned int h)
{
union g2d_rop4_val rop4;
union g2d_point_val pt;
unsigned int src_w, src_h, dst_w, dst_h;
src_w = w;
src_h = h;
if (src_x + src->width > w)
src_w = src->width - src_x;
if (src_y + src->height > h)
src_h = src->height - src_y;
dst_w = w;
dst_h = w;
if (dst_x + dst->width > w)
dst_w = dst->width - dst_x;
if (dst_y + dst->height > h)
dst_h = dst->height - dst_y;
w = MIN(src_w, dst_w);
h = MIN(src_h, dst_h);
if (w <= 0 || h <= 0) {
fprintf(stderr, MSG_PREFIX "invalid width or height.\n");
return -EINVAL;
}
if (g2d_check_space(ctx, 11, 2))
return -ENOSPC;
g2d_add_cmd(ctx, DST_SELECT_REG, G2D_SELECT_MODE_BGCOLOR);
g2d_add_cmd(ctx, DST_COLOR_MODE_REG, dst->color_mode);
g2d_add_base_addr(ctx, dst, g2d_dst);
g2d_add_cmd(ctx, DST_STRIDE_REG, dst->stride);
g2d_add_cmd(ctx, SRC_SELECT_REG, G2D_SELECT_MODE_NORMAL);
g2d_add_cmd(ctx, SRC_COLOR_MODE_REG, src->color_mode);
g2d_add_base_addr(ctx, src, g2d_src);
g2d_add_cmd(ctx, SRC_STRIDE_REG, src->stride);
pt.data.x = src_x;
pt.data.y = src_y;
g2d_add_cmd(ctx, SRC_LEFT_TOP_REG, pt.val);
pt.data.x = src_x + w;
pt.data.y = src_y + h;
g2d_add_cmd(ctx, SRC_RIGHT_BOTTOM_REG, pt.val);
pt.data.x = dst_x;
pt.data.y = dst_y;
g2d_add_cmd(ctx, DST_LEFT_TOP_REG, pt.val);
pt.data.x = dst_x + w;
pt.data.y = dst_y + h;
g2d_add_cmd(ctx, DST_RIGHT_BOTTOM_REG, pt.val);
rop4.val = 0;
rop4.data.unmasked_rop3 = G2D_ROP3_SRC;
g2d_add_cmd(ctx, ROP4_REG, rop4.val);
return g2d_flush(ctx);
}
/**
* g2d_move - copy content inside single buffer.
* Similar to libc's memmove() this copies a rectangular
* region of the provided buffer to another location, while
* properly handling the situation where source and
* destination rectangle overlap.
*
* @ctx: a pointer to g2d_context structure.
* @img: a pointer to g2d_image structure providing
* buffer information.
* @src_x: x position of source rectangle.
* @src_y: y position of source rectangle.
* @dst_x: x position of destination rectangle.
* @dst_y: y position of destination rectangle.
* @w: width of rectangle to move.
* @h: height of rectangle to move.
*/
int
g2d_move(struct g2d_context *ctx, struct g2d_image *img,
unsigned int src_x, unsigned int src_y,
unsigned int dst_x, unsigned dst_y, unsigned int w,
unsigned int h)
{
union g2d_rop4_val rop4;
union g2d_point_val pt;
union g2d_direction_val dir;
unsigned int src_w, src_h, dst_w, dst_h;
src_w = w;
src_h = h;
if (src_x + img->width > w)
src_w = img->width - src_x;
if (src_y + img->height > h)
src_h = img->height - src_y;
dst_w = w;
dst_h = w;
if (dst_x + img->width > w)
dst_w = img->width - dst_x;
if (dst_y + img->height > h)
dst_h = img->height - dst_y;
w = MIN(src_w, dst_w);
h = MIN(src_h, dst_h);
if (w == 0 || h == 0) {
fprintf(stderr, MSG_PREFIX "invalid width or height.\n");
return -EINVAL;
}
if (g2d_check_space(ctx, 13, 2))
return -ENOSPC;
g2d_add_cmd(ctx, DST_SELECT_REG, G2D_SELECT_MODE_BGCOLOR);
g2d_add_cmd(ctx, SRC_SELECT_REG, G2D_SELECT_MODE_NORMAL);
g2d_add_cmd(ctx, DST_COLOR_MODE_REG, img->color_mode);
g2d_add_cmd(ctx, SRC_COLOR_MODE_REG, img->color_mode);
g2d_add_base_addr(ctx, img, g2d_dst);
g2d_add_base_addr(ctx, img, g2d_src);
g2d_add_cmd(ctx, DST_STRIDE_REG, img->stride);
g2d_add_cmd(ctx, SRC_STRIDE_REG, img->stride);
dir.val[0] = dir.val[1] = 0;
if (dst_x >= src_x)
dir.data.src_x_direction = dir.data.dst_x_direction = 1;
if (dst_y >= src_y)
dir.data.src_y_direction = dir.data.dst_y_direction = 1;
g2d_set_direction(ctx, &dir);
pt.data.x = src_x;
pt.data.y = src_y;
g2d_add_cmd(ctx, SRC_LEFT_TOP_REG, pt.val);
pt.data.x = src_x + w;
pt.data.y = src_y + h;
g2d_add_cmd(ctx, SRC_RIGHT_BOTTOM_REG, pt.val);
pt.data.x = dst_x;
pt.data.y = dst_y;
g2d_add_cmd(ctx, DST_LEFT_TOP_REG, pt.val);
pt.data.x = dst_x + w;
pt.data.y = dst_y + h;
g2d_add_cmd(ctx, DST_RIGHT_BOTTOM_REG, pt.val);
rop4.val = 0;
rop4.data.unmasked_rop3 = G2D_ROP3_SRC;
g2d_add_cmd(ctx, ROP4_REG, rop4.val);
return g2d_flush(ctx);
}
/**
* g2d_copy_with_scale - copy contents in source buffer to destination buffer
* scaling up or down properly.
*
* @ctx: a pointer to g2d_context structure.
* @src: a pointer to g2d_image structure including image and buffer
* information to source.
* @dst: a pointer to g2d_image structure including image and buffer
* information to destination.
* @src_x: x start position to source buffer.
* @src_y: y start position to source buffer.
* @src_w: width value to source buffer.
* @src_h: height value to source buffer.
* @dst_x: x start position to destination buffer.
* @dst_y: y start position to destination buffer.
* @dst_w: width value to destination buffer.
* @dst_h: height value to destination buffer.
* @negative: indicate that it uses color negative to source and
* destination buffers.
*/
int
g2d_copy_with_scale(struct g2d_context *ctx, struct g2d_image *src,
struct g2d_image *dst, unsigned int src_x,
unsigned int src_y, unsigned int src_w,
unsigned int src_h, unsigned int dst_x,
unsigned int dst_y, unsigned int dst_w,
unsigned int dst_h, unsigned int negative)
{
union g2d_rop4_val rop4;
union g2d_point_val pt;
unsigned int scale, repeat_pad;
unsigned int scale_x, scale_y;
/* Sanitize this parameter to facilitate space computation below. */
if (negative)
negative = 1;
if (src_w == dst_w && src_h == dst_h)
scale = 0;
else {
scale = 1;
scale_x = g2d_get_scaling(src_w, dst_w);
scale_y = g2d_get_scaling(src_h, dst_h);
}
repeat_pad = src->repeat_mode == G2D_REPEAT_MODE_PAD ? 1 : 0;
if (src_x + src_w > src->width)
src_w = src->width - src_x;
if (src_y + src_h > src->height)
src_h = src->height - src_y;
if (dst_x + dst_w > dst->width)
dst_w = dst->width - dst_x;
if (dst_y + dst_h > dst->height)
dst_h = dst->height - dst_y;
if (src_w <= 0 || src_h <= 0 || dst_w <= 0 || dst_h <= 0) {
fprintf(stderr, MSG_PREFIX "invalid width or height.\n");
return -EINVAL;
}
if (g2d_check_space(ctx, 12 + scale * 3 + negative + repeat_pad, 2))
return -ENOSPC;
g2d_add_cmd(ctx, DST_SELECT_REG, G2D_SELECT_MODE_BGCOLOR);
g2d_add_cmd(ctx, DST_COLOR_MODE_REG, dst->color_mode);
g2d_add_base_addr(ctx, dst, g2d_dst);
g2d_add_cmd(ctx, DST_STRIDE_REG, dst->stride);
g2d_add_cmd(ctx, SRC_SELECT_REG, G2D_SELECT_MODE_NORMAL);
g2d_add_cmd(ctx, SRC_COLOR_MODE_REG, src->color_mode);
g2d_add_cmd(ctx, SRC_REPEAT_MODE_REG, src->repeat_mode);
if (repeat_pad)
g2d_add_cmd(ctx, SRC_PAD_VALUE_REG, dst->color);
g2d_add_base_addr(ctx, src, g2d_src);
g2d_add_cmd(ctx, SRC_STRIDE_REG, src->stride);
rop4.val = 0;
rop4.data.unmasked_rop3 = G2D_ROP3_SRC;
if (negative) {
g2d_add_cmd(ctx, BG_COLOR_REG, 0x00FFFFFF);
rop4.data.unmasked_rop3 ^= G2D_ROP3_DST;
}
g2d_add_cmd(ctx, ROP4_REG, rop4.val);
if (scale) {
g2d_add_cmd(ctx, SRC_SCALE_CTRL_REG, G2D_SCALE_MODE_BILINEAR);
g2d_add_cmd(ctx, SRC_XSCALE_REG, scale_x);
g2d_add_cmd(ctx, SRC_YSCALE_REG, scale_y);
}
pt.data.x = src_x;
pt.data.y = src_y;
g2d_add_cmd(ctx, SRC_LEFT_TOP_REG, pt.val);
pt.data.x = src_x + src_w;
pt.data.y = src_y + src_h;
g2d_add_cmd(ctx, SRC_RIGHT_BOTTOM_REG, pt.val);
pt.data.x = dst_x;
pt.data.y = dst_y;
g2d_add_cmd(ctx, DST_LEFT_TOP_REG, pt.val);
pt.data.x = dst_x + dst_w;
pt.data.y = dst_y + dst_h;
g2d_add_cmd(ctx, DST_RIGHT_BOTTOM_REG, pt.val);
return g2d_flush(ctx);
}
/**
* g2d_blend - blend image data in source and destination buffers.
*
* @ctx: a pointer to g2d_context structure.
* @src: a pointer to g2d_image structure including image and buffer
* information to source.
* @dst: a pointer to g2d_image structure including image and buffer
* information to destination.
* @src_x: x start position to source buffer.
* @src_y: y start position to source buffer.
* @dst_x: x start position to destination buffer.
* @dst_y: y start position to destination buffer.
* @w: width value to source and destination buffer.
* @h: height value to source and destination buffer.
* @op: blend operation type.
*/
int
g2d_blend(struct g2d_context *ctx, struct g2d_image *src,
struct g2d_image *dst, unsigned int src_x,
unsigned int src_y, unsigned int dst_x, unsigned int dst_y,
unsigned int w, unsigned int h, enum e_g2d_op op)
{
union g2d_point_val pt;
union g2d_bitblt_cmd_val bitblt;
union g2d_blend_func_val blend;
unsigned int gem_space;
unsigned int src_w, src_h, dst_w, dst_h;
src_w = w;
src_h = h;
if (src_x + w > src->width)
src_w = src->width - src_x;
if (src_y + h > src->height)
src_h = src->height - src_y;
dst_w = w;
dst_h = h;
if (dst_x + w > dst->width)
dst_w = dst->width - dst_x;
if (dst_y + h > dst->height)
dst_h = dst->height - dst_y;
w = MIN(src_w, dst_w);
h = MIN(src_h, dst_h);
if (w <= 0 || h <= 0) {
fprintf(stderr, MSG_PREFIX "invalid width or height.\n");
return -EINVAL;
}
if (!g2d_validate_select_mode(src->select_mode)) {
fprintf(stderr , MSG_PREFIX "invalid select mode for source.\n");
return -EINVAL;
}
if (!g2d_validate_blending_op(op)) {
fprintf(stderr , MSG_PREFIX "unsupported blending operation.\n");
return -EINVAL;
}
gem_space = src->select_mode == G2D_SELECT_MODE_NORMAL ? 2 : 1;
if (g2d_check_space(ctx, 12, gem_space))
return -ENOSPC;
bitblt.val = 0;
blend.val = 0;
if (op == G2D_OP_SRC || op == G2D_OP_CLEAR)
g2d_add_cmd(ctx, DST_SELECT_REG, G2D_SELECT_MODE_BGCOLOR);
else
g2d_add_cmd(ctx, DST_SELECT_REG, G2D_SELECT_MODE_NORMAL);
g2d_add_cmd(ctx, DST_COLOR_MODE_REG, dst->color_mode);
g2d_add_base_addr(ctx, dst, g2d_dst);
g2d_add_cmd(ctx, DST_STRIDE_REG, dst->stride);
g2d_add_cmd(ctx, SRC_SELECT_REG, src->select_mode);
g2d_add_cmd(ctx, SRC_COLOR_MODE_REG, src->color_mode);
switch (src->select_mode) {
case G2D_SELECT_MODE_NORMAL:
g2d_add_base_addr(ctx, src, g2d_src);
g2d_add_cmd(ctx, SRC_STRIDE_REG, src->stride);
break;
case G2D_SELECT_MODE_FGCOLOR:
g2d_add_cmd(ctx, FG_COLOR_REG, src->color);
break;
case G2D_SELECT_MODE_BGCOLOR:
g2d_add_cmd(ctx, BG_COLOR_REG, src->color);
break;
}
bitblt.data.alpha_blend_mode = G2D_ALPHA_BLEND_MODE_ENABLE;
blend.val = g2d_get_blend_op(op);
g2d_add_cmd(ctx, BITBLT_COMMAND_REG, bitblt.val);
g2d_add_cmd(ctx, BLEND_FUNCTION_REG, blend.val);
pt.data.x = src_x;
pt.data.y = src_y;
g2d_add_cmd(ctx, SRC_LEFT_TOP_REG, pt.val);
pt.data.x = src_x + w;
pt.data.y = src_y + h;
g2d_add_cmd(ctx, SRC_RIGHT_BOTTOM_REG, pt.val);
pt.data.x = dst_x;
pt.data.y = dst_y;
g2d_add_cmd(ctx, DST_LEFT_TOP_REG, pt.val);
pt.data.x = dst_x + w;
pt.data.y = dst_y + h;
g2d_add_cmd(ctx, DST_RIGHT_BOTTOM_REG, pt.val);
return g2d_flush(ctx);
}
/**
* g2d_scale_and_blend - apply scaling to source buffer and then blend to destination buffer
*
* @ctx: a pointer to g2d_context structure.
* @src: a pointer to g2d_image structure including image and buffer
* information to source.
* @dst: a pointer to g2d_image structure including image and buffer
* information to destination.
* @src_x: x start position to source buffer.
* @src_y: y start position to source buffer.
* @src_w: width value to source buffer.
* @src_h: height value to source buffer.
* @dst_x: x start position to destination buffer.
* @dst_y: y start position to destination buffer.
* @dst_w: width value to destination buffer.
* @dst_h: height value to destination buffer.
* @op: blend operation type.
*/
int
g2d_scale_and_blend(struct g2d_context *ctx, struct g2d_image *src,
struct g2d_image *dst, unsigned int src_x, unsigned int src_y,
unsigned int src_w, unsigned int src_h, unsigned int dst_x,
unsigned int dst_y, unsigned int dst_w, unsigned int dst_h,
enum e_g2d_op op)
{
union g2d_point_val pt;
union g2d_bitblt_cmd_val bitblt;
union g2d_blend_func_val blend;
unsigned int scale, gem_space;
unsigned int scale_x, scale_y;
if (src_w == dst_w && src_h == dst_h)
scale = 0;
else {
scale = 1;
scale_x = g2d_get_scaling(src_w, dst_w);
scale_y = g2d_get_scaling(src_h, dst_h);
}
if (src_x + src_w > src->width)
src_w = src->width - src_x;
if (src_y + src_h > src->height)
src_h = src->height - src_y;
if (dst_x + dst_w > dst->width)
dst_w = dst->width - dst_x;
if (dst_y + dst_h > dst->height)
dst_h = dst->height - dst_y;
if (src_w <= 0 || src_h <= 0 || dst_w <= 0 || dst_h <= 0) {
fprintf(stderr, MSG_PREFIX "invalid width or height.\n");
return -EINVAL;
}
if (!g2d_validate_select_mode(src->select_mode)) {
fprintf(stderr , MSG_PREFIX "invalid select mode for source.\n");
return -EINVAL;
}
if (!g2d_validate_blending_op(op)) {
fprintf(stderr , MSG_PREFIX "unsupported blending operation.\n");
return -EINVAL;
}
gem_space = src->select_mode == G2D_SELECT_MODE_NORMAL ? 2 : 1;
if (g2d_check_space(ctx, 12 + scale * 3, gem_space))
return -ENOSPC;
bitblt.val = 0;
blend.val = 0;
if (op == G2D_OP_SRC || op == G2D_OP_CLEAR)
g2d_add_cmd(ctx, DST_SELECT_REG, G2D_SELECT_MODE_BGCOLOR);
else
g2d_add_cmd(ctx, DST_SELECT_REG, G2D_SELECT_MODE_NORMAL);
g2d_add_cmd(ctx, DST_COLOR_MODE_REG, dst->color_mode);
g2d_add_base_addr(ctx, dst, g2d_dst);
g2d_add_cmd(ctx, DST_STRIDE_REG, dst->stride);
g2d_add_cmd(ctx, SRC_SELECT_REG, src->select_mode);
g2d_add_cmd(ctx, SRC_COLOR_MODE_REG, src->color_mode);
switch (src->select_mode) {
case G2D_SELECT_MODE_NORMAL:
g2d_add_base_addr(ctx, src, g2d_src);
g2d_add_cmd(ctx, SRC_STRIDE_REG, src->stride);
break;
case G2D_SELECT_MODE_FGCOLOR:
g2d_add_cmd(ctx, FG_COLOR_REG, src->color);
break;
case G2D_SELECT_MODE_BGCOLOR:
g2d_add_cmd(ctx, BG_COLOR_REG, src->color);
break;
}
if (scale) {
g2d_add_cmd(ctx, SRC_SCALE_CTRL_REG, G2D_SCALE_MODE_BILINEAR);
g2d_add_cmd(ctx, SRC_XSCALE_REG, scale_x);
g2d_add_cmd(ctx, SRC_YSCALE_REG, scale_y);
}
bitblt.data.alpha_blend_mode = G2D_ALPHA_BLEND_MODE_ENABLE;
blend.val = g2d_get_blend_op(op);
g2d_add_cmd(ctx, BITBLT_COMMAND_REG, bitblt.val);
g2d_add_cmd(ctx, BLEND_FUNCTION_REG, blend.val);
pt.data.x = src_x;
pt.data.y = src_y;
g2d_add_cmd(ctx, SRC_LEFT_TOP_REG, pt.val);
pt.data.x = src_x + src_w;
pt.data.y = src_y + src_h;
g2d_add_cmd(ctx, SRC_RIGHT_BOTTOM_REG, pt.val);
pt.data.x = dst_x;
pt.data.y = dst_y;
g2d_add_cmd(ctx, DST_LEFT_TOP_REG, pt.val);
pt.data.x = dst_x + dst_w;
pt.data.y = dst_y + dst_h;
g2d_add_cmd(ctx, DST_RIGHT_BOTTOM_REG, pt.val);
return g2d_flush(ctx);
}
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