1 // SPDX-License-Identifier: GPL-2.0-only
3 * drivers/mb862xx/mb862xxfb_accel.c
5 * Fujitsu Carmine/Coral-P(A)/Lime framebuffer driver acceleration support
7 * (C) 2007 Alexander Shishkin <virtuoso@slind.org>
8 * (C) 2009 Valentin Sitdikov <v.sitdikov@gmail.com>
12 #include <linux/delay.h>
13 #include <linux/init.h>
14 #include <linux/interrupt.h>
15 #include <linux/module.h>
16 #include <linux/pci.h>
17 #include <linux/slab.h>
18 #if defined(CONFIG_OF)
19 #include <linux/of_platform.h>
21 #include "mb862xxfb.h"
22 #include "mb862xx_reg.h"
23 #include "mb862xxfb_accel.h"
25 static void mb862xxfb_write_fifo(u32 count, u32 *data, struct fb_info *info)
27 struct mb862xxfb_par *par = info->par;
31 while (total < count) {
33 outreg(geo, GDC_GEO_REG_INPUT_FIFO, data[total]);
37 free = (u32) inreg(draw, GDC_REG_FIFO_COUNT);
42 static void mb86290fb_copyarea(struct fb_info *info,
43 const struct fb_copyarea *area)
47 cmd[0] = (GDC_TYPE_SETREGISTER << 24) | (1 << 16) | GDC_REG_MODE_BITMAP;
48 /* Set raster operation */
49 cmd[1] = (2 << 7) | (GDC_ROP_COPY << 9);
50 cmd[2] = GDC_TYPE_BLTCOPYP << 24;
52 if (area->sx >= area->dx && area->sy >= area->dy)
53 cmd[2] |= GDC_CMD_BLTCOPY_TOP_LEFT << 16;
54 else if (area->sx >= area->dx && area->sy <= area->dy)
55 cmd[2] |= GDC_CMD_BLTCOPY_BOTTOM_LEFT << 16;
56 else if (area->sx <= area->dx && area->sy >= area->dy)
57 cmd[2] |= GDC_CMD_BLTCOPY_TOP_RIGHT << 16;
59 cmd[2] |= GDC_CMD_BLTCOPY_BOTTOM_RIGHT << 16;
61 cmd[3] = (area->sy << 16) | area->sx;
62 cmd[4] = (area->dy << 16) | area->dx;
63 cmd[5] = (area->height << 16) | area->width;
64 mb862xxfb_write_fifo(6, cmd, info);
68 * Fill in the cmd array /GDC FIFO commands/ to draw a 1bit image.
69 * Make sure cmd has enough room!
71 static void mb86290fb_imageblit1(u32 *cmd, u16 step, u16 dx, u16 dy,
72 u16 width, u16 height, u32 fgcolor,
73 u32 bgcolor, const struct fb_image *image,
77 unsigned const char *line;
80 /* set colors and raster operation regs */
81 cmd[0] = (GDC_TYPE_SETREGISTER << 24) | (1 << 16) | GDC_REG_MODE_BITMAP;
82 /* Set raster operation */
83 cmd[1] = (2 << 7) | (GDC_ROP_COPY << 9);
85 (GDC_TYPE_SETCOLORREGISTER << 24) | (GDC_CMD_BODY_FORE_COLOR << 16);
88 (GDC_TYPE_SETCOLORREGISTER << 24) | (GDC_CMD_BODY_BACK_COLOR << 16);
93 bytes = (image->width + 7) >> 3;
96 cmd[6] = (GDC_TYPE_DRAWBITMAPP << 24) |
97 (GDC_CMD_BITMAP << 16) | (2 + (step * height));
98 cmd[7] = (dy << 16) | dx;
99 cmd[8] = (height << 16) | width;
102 memcpy(&cmd[9 + i * step], line, step << 2);
103 #ifdef __LITTLE_ENDIAN
106 for (k = 0; k < step; k++)
107 cmd[9 + i * step + k] =
108 cpu_to_be32(cmd[9 + i * step + k]);
117 * Fill in the cmd array /GDC FIFO commands/ to draw a 8bit image.
118 * Make sure cmd has enough room!
120 static void mb86290fb_imageblit8(u32 *cmd, u16 step, u16 dx, u16 dy,
121 u16 width, u16 height, u32 fgcolor,
122 u32 bgcolor, const struct fb_image *image,
123 struct fb_info *info)
126 unsigned const char *line, *ptr;
129 cmd[0] = (GDC_TYPE_DRAWBITMAPP << 24) |
130 (GDC_CMD_BLT_DRAW << 16) | (2 + (height * step));
131 cmd[1] = (dy << 16) | dx;
132 cmd[2] = (height << 16) | width;
135 line = ptr = image->data;
136 bytes = image->width;
140 for (j = 0; j < step; j++) {
141 cmd[3 + i * step + j] =
142 (((u32 *) (info->pseudo_palette))[*ptr]) & 0xffff;
144 cmd[3 + i * step + j] |=
146 pseudo_palette))[*ptr]) & 0xffff) << 16;
156 * Fill in the cmd array /GDC FIFO commands/ to draw a 16bit image.
157 * Make sure cmd has enough room!
159 static void mb86290fb_imageblit16(u32 *cmd, u16 step, u16 dx, u16 dy,
160 u16 width, u16 height, u32 fgcolor,
161 u32 bgcolor, const struct fb_image *image,
162 struct fb_info *info)
165 unsigned const char *line;
170 bytes = image->width << 1;
172 cmd[0] = (GDC_TYPE_DRAWBITMAPP << 24) |
173 (GDC_CMD_BLT_DRAW << 16) | (2 + step * height);
174 cmd[1] = (dy << 16) | dx;
175 cmd[2] = (height << 16) | width;
178 memcpy(&cmd[3 + i * step], line, step);
184 static void mb86290fb_imageblit(struct fb_info *info,
185 const struct fb_image *image)
189 void (*cmdfn) (u32 *, u16, u16, u16, u16, u16, u32, u32,
190 const struct fb_image *, struct fb_info *) = NULL;
192 u32 fgcolor = 0, bgcolor = 0;
195 u16 width = image->width, height = image->height;
196 u16 dx = image->dx, dy = image->dy;
197 int x2, y2, vxres, vyres;
199 mdr = (GDC_ROP_COPY << 9);
200 x2 = image->dx + image->width;
201 y2 = image->dy + image->height;
202 vxres = info->var.xres_virtual;
203 vyres = info->var.yres_virtual;
209 switch (image->depth) {
211 step = (width + 31) >> 5;
212 cmdlen = 9 + height * step;
213 cmdfn = mb86290fb_imageblit1;
214 if (info->fix.visual == FB_VISUAL_TRUECOLOR ||
215 info->fix.visual == FB_VISUAL_DIRECTCOLOR) {
217 ((u32 *) (info->pseudo_palette))[image->fg_color];
219 ((u32 *) (info->pseudo_palette))[image->bg_color];
221 fgcolor = image->fg_color;
222 bgcolor = image->bg_color;
228 step = (width + 1) >> 1;
229 cmdlen = 3 + height * step;
230 cmdfn = mb86290fb_imageblit8;
234 step = (width + 1) >> 1;
235 cmdlen = 3 + height * step;
236 cmdfn = mb86290fb_imageblit16;
240 cfb_imageblit(info, image);
244 cmd = kmalloc_array(cmdlen, 4, GFP_DMA);
246 return cfb_imageblit(info, image);
247 cmdfn(cmd, step, dx, dy, width, height, fgcolor, bgcolor, image, info);
248 mb862xxfb_write_fifo(cmdlen, cmd, info);
252 static void mb86290fb_fillrect(struct fb_info *info,
253 const struct fb_fillrect *rect)
256 u32 x2, y2, vxres, vyres, height, width, fg;
259 vxres = info->var.xres_virtual;
260 vyres = info->var.yres_virtual;
262 if (!rect->width || !rect->height || rect->dx > vxres
266 /* We could use hardware clipping but on many cards you get around
267 * hardware clipping by writing to framebuffer directly. */
268 x2 = rect->dx + rect->width;
269 y2 = rect->dy + rect->height;
272 width = x2 - rect->dx;
273 height = y2 - rect->dy;
274 if (info->fix.visual == FB_VISUAL_TRUECOLOR ||
275 info->fix.visual == FB_VISUAL_DIRECTCOLOR)
276 fg = ((u32 *) (info->pseudo_palette))[rect->color];
283 /* Set raster operation */
284 cmd[1] = (2 << 7) | (GDC_ROP_XOR << 9);
288 /* Set raster operation */
289 cmd[1] = (2 << 7) | (GDC_ROP_COPY << 9);
294 cmd[0] = (GDC_TYPE_SETREGISTER << 24) | (1 << 16) | GDC_REG_MODE_BITMAP;
295 /* cmd[1] set earlier */
297 (GDC_TYPE_SETCOLORREGISTER << 24) | (GDC_CMD_BODY_FORE_COLOR << 16);
299 cmd[4] = (GDC_TYPE_DRAWRECTP << 24) | (GDC_CMD_BLT_FILL << 16);
300 cmd[5] = (rect->dy << 16) | (rect->dx);
301 cmd[6] = (height << 16) | width;
303 mb862xxfb_write_fifo(7, cmd, info);
306 void mb862xxfb_init_accel(struct fb_info *info, int xres)
308 struct mb862xxfb_par *par = info->par;
310 if (info->var.bits_per_pixel == 32) {
311 info->fbops->fb_fillrect = cfb_fillrect;
312 info->fbops->fb_copyarea = cfb_copyarea;
313 info->fbops->fb_imageblit = cfb_imageblit;
315 outreg(disp, GC_L0EM, 3);
316 info->fbops->fb_fillrect = mb86290fb_fillrect;
317 info->fbops->fb_copyarea = mb86290fb_copyarea;
318 info->fbops->fb_imageblit = mb86290fb_imageblit;
320 outreg(draw, GDC_REG_DRAW_BASE, 0);
321 outreg(draw, GDC_REG_MODE_MISC, 0x8000);
322 outreg(draw, GDC_REG_X_RESOLUTION, xres);
325 FBINFO_HWACCEL_COPYAREA | FBINFO_HWACCEL_FILLRECT |
326 FBINFO_HWACCEL_IMAGEBLIT;
327 info->fix.accel = 0xff; /*FIXME: add right define */
329 EXPORT_SYMBOL(mb862xxfb_init_accel);
331 MODULE_LICENSE("GPL v2");