diff options
Diffstat (limited to 'exynos/exynos_fimg2d.c')
| -rw-r--r-- | exynos/exynos_fimg2d.c | 1010 |
1 files changed, 1010 insertions, 0 deletions
diff --git a/exynos/exynos_fimg2d.c b/exynos/exynos_fimg2d.c new file mode 100644 index 0000000..ac6fa68 --- /dev/null +++ b/exynos/exynos_fimg2d.c @@ -0,0 +1,1010 @@ +/* + * Copyright (C) 2013 Samsung Electronics Co.Ltd + * Authors: + * Inki Dae <inki.dae@samsung.com> + * + * Permission is hereby granted, free of charge, to any person obtaining a + * copy of this software and associated documentation files (the "Software"), + * to deal in the Software without restriction, including without limitation + * the rights to use, copy, modify, merge, publish, distribute, sublicense, + * and/or sell copies of the Software, and to permit persons to whom the + * Software is furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice (including the next + * paragraph) shall be included in all copies or substantial portions of the + * Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL + * VA LINUX SYSTEMS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR + * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, + * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR + * OTHER DEALINGS IN THE SOFTWARE. + */ + +#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_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. + */ +drm_public 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; +} + +drm_public 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 + */ +drm_public 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. + */ +drm_public 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. + */ +drm_public 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. + */ +drm_public 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. + */ +drm_public 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. + */ +drm_public 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. + */ +drm_public 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. + */ +drm_public 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); +} |