]>
Commit | Line | Data |
---|---|---|
1 | // SPDX-License-Identifier: GPL-2.0-only | |
2 | /* | |
3 | * drivers/mb862xx/mb862xxfb_accel.c | |
4 | * | |
5 | * Fujitsu Carmine/Coral-P(A)/Lime framebuffer driver acceleration support | |
6 | * | |
7 | * (C) 2007 Alexander Shishkin <virtuoso@slind.org> | |
8 | * (C) 2009 Valentin Sitdikov <v.sitdikov@gmail.com> | |
9 | * (C) 2009 Siemens AG | |
10 | */ | |
11 | #include <linux/fb.h> | |
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> | |
20 | #endif | |
21 | #include "mb862xxfb.h" | |
22 | #include "mb862xx_reg.h" | |
23 | #include "mb862xxfb_accel.h" | |
24 | ||
25 | static void mb862xxfb_write_fifo(u32 count, u32 *data, struct fb_info *info) | |
26 | { | |
27 | struct mb862xxfb_par *par = info->par; | |
28 | static u32 free; | |
29 | ||
30 | u32 total = 0; | |
31 | while (total < count) { | |
32 | if (free) { | |
33 | outreg(geo, GDC_GEO_REG_INPUT_FIFO, data[total]); | |
34 | total++; | |
35 | free--; | |
36 | } else { | |
37 | free = (u32) inreg(draw, GDC_REG_FIFO_COUNT); | |
38 | } | |
39 | } | |
40 | } | |
41 | ||
42 | static void mb86290fb_copyarea(struct fb_info *info, | |
43 | const struct fb_copyarea *area) | |
44 | { | |
45 | __u32 cmd[6]; | |
46 | ||
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; | |
51 | ||
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; | |
58 | else | |
59 | cmd[2] |= GDC_CMD_BLTCOPY_BOTTOM_RIGHT << 16; | |
60 | ||
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); | |
65 | } | |
66 | ||
67 | /* | |
68 | * Fill in the cmd array /GDC FIFO commands/ to draw a 1bit image. | |
69 | * Make sure cmd has enough room! | |
70 | */ | |
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, | |
74 | struct fb_info *info) | |
75 | { | |
76 | int i; | |
77 | unsigned const char *line; | |
78 | u16 bytes; | |
79 | ||
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); | |
84 | cmd[2] = | |
85 | (GDC_TYPE_SETCOLORREGISTER << 24) | (GDC_CMD_BODY_FORE_COLOR << 16); | |
86 | cmd[3] = fgcolor; | |
87 | cmd[4] = | |
88 | (GDC_TYPE_SETCOLORREGISTER << 24) | (GDC_CMD_BODY_BACK_COLOR << 16); | |
89 | cmd[5] = bgcolor; | |
90 | ||
91 | i = 0; | |
92 | line = image->data; | |
93 | bytes = (image->width + 7) >> 3; | |
94 | ||
95 | /* and the image */ | |
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; | |
100 | ||
101 | while (i < height) { | |
102 | memcpy(&cmd[9 + i * step], line, step << 2); | |
103 | #ifdef __LITTLE_ENDIAN | |
104 | { | |
105 | int k = 0; | |
106 | for (k = 0; k < step; k++) | |
107 | cmd[9 + i * step + k] = | |
108 | cpu_to_be32(cmd[9 + i * step + k]); | |
109 | } | |
110 | #endif | |
111 | line += bytes; | |
112 | i++; | |
113 | } | |
114 | } | |
115 | ||
116 | /* | |
117 | * Fill in the cmd array /GDC FIFO commands/ to draw a 8bit image. | |
118 | * Make sure cmd has enough room! | |
119 | */ | |
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) | |
124 | { | |
125 | int i, j; | |
126 | unsigned const char *line, *ptr; | |
127 | u16 bytes; | |
128 | ||
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; | |
133 | ||
134 | i = 0; | |
135 | line = ptr = image->data; | |
136 | bytes = image->width; | |
137 | ||
138 | while (i < height) { | |
139 | ptr = line; | |
140 | for (j = 0; j < step; j++) { | |
141 | cmd[3 + i * step + j] = | |
142 | (((u32 *) (info->pseudo_palette))[*ptr]) & 0xffff; | |
143 | ptr++; | |
144 | cmd[3 + i * step + j] |= | |
145 | ((((u32 *) (info-> | |
146 | pseudo_palette))[*ptr]) & 0xffff) << 16; | |
147 | ptr++; | |
148 | } | |
149 | ||
150 | line += bytes; | |
151 | i++; | |
152 | } | |
153 | } | |
154 | ||
155 | /* | |
156 | * Fill in the cmd array /GDC FIFO commands/ to draw a 16bit image. | |
157 | * Make sure cmd has enough room! | |
158 | */ | |
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) | |
163 | { | |
164 | int i; | |
165 | unsigned const char *line; | |
166 | u16 bytes; | |
167 | ||
168 | i = 0; | |
169 | line = image->data; | |
170 | bytes = image->width << 1; | |
171 | ||
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; | |
176 | ||
177 | while (i < height) { | |
178 | memcpy(&cmd[3 + i * step], line, step); | |
179 | line += bytes; | |
180 | i++; | |
181 | } | |
182 | } | |
183 | ||
184 | static void mb86290fb_imageblit(struct fb_info *info, | |
185 | const struct fb_image *image) | |
186 | { | |
187 | int mdr; | |
188 | u32 *cmd = NULL; | |
189 | void (*cmdfn) (u32 *, u16, u16, u16, u16, u16, u32, u32, | |
190 | const struct fb_image *, struct fb_info *) = NULL; | |
191 | u32 cmdlen; | |
192 | u32 fgcolor = 0, bgcolor = 0; | |
193 | u16 step; | |
194 | ||
195 | u16 width = image->width, height = image->height; | |
196 | u16 dx = image->dx, dy = image->dy; | |
197 | int x2, y2, vxres, vyres; | |
198 | ||
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; | |
204 | x2 = min(x2, vxres); | |
205 | y2 = min(y2, vyres); | |
206 | width = x2 - dx; | |
207 | height = y2 - dy; | |
208 | ||
209 | switch (image->depth) { | |
210 | case 1: | |
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) { | |
216 | fgcolor = | |
217 | ((u32 *) (info->pseudo_palette))[image->fg_color]; | |
218 | bgcolor = | |
219 | ((u32 *) (info->pseudo_palette))[image->bg_color]; | |
220 | } else { | |
221 | fgcolor = image->fg_color; | |
222 | bgcolor = image->bg_color; | |
223 | } | |
224 | ||
225 | break; | |
226 | ||
227 | case 8: | |
228 | step = (width + 1) >> 1; | |
229 | cmdlen = 3 + height * step; | |
230 | cmdfn = mb86290fb_imageblit8; | |
231 | break; | |
232 | ||
233 | case 16: | |
234 | step = (width + 1) >> 1; | |
235 | cmdlen = 3 + height * step; | |
236 | cmdfn = mb86290fb_imageblit16; | |
237 | break; | |
238 | ||
239 | default: | |
240 | cfb_imageblit(info, image); | |
241 | return; | |
242 | } | |
243 | ||
244 | cmd = kmalloc_array(cmdlen, 4, GFP_DMA); | |
245 | if (!cmd) | |
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); | |
249 | kfree(cmd); | |
250 | } | |
251 | ||
252 | static void mb86290fb_fillrect(struct fb_info *info, | |
253 | const struct fb_fillrect *rect) | |
254 | { | |
255 | ||
256 | u32 x2, y2, vxres, vyres, height, width, fg; | |
257 | u32 cmd[7]; | |
258 | ||
259 | vxres = info->var.xres_virtual; | |
260 | vyres = info->var.yres_virtual; | |
261 | ||
262 | if (!rect->width || !rect->height || rect->dx > vxres | |
263 | || rect->dy > vyres) | |
264 | return; | |
265 | ||
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; | |
270 | x2 = min(x2, vxres); | |
271 | y2 = min(y2, vyres); | |
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]; | |
277 | else | |
278 | fg = rect->color; | |
279 | ||
280 | switch (rect->rop) { | |
281 | ||
282 | case ROP_XOR: | |
283 | /* Set raster operation */ | |
284 | cmd[1] = (2 << 7) | (GDC_ROP_XOR << 9); | |
285 | break; | |
286 | ||
287 | case ROP_COPY: | |
288 | /* Set raster operation */ | |
289 | cmd[1] = (2 << 7) | (GDC_ROP_COPY << 9); | |
290 | break; | |
291 | ||
292 | } | |
293 | ||
294 | cmd[0] = (GDC_TYPE_SETREGISTER << 24) | (1 << 16) | GDC_REG_MODE_BITMAP; | |
295 | /* cmd[1] set earlier */ | |
296 | cmd[2] = | |
297 | (GDC_TYPE_SETCOLORREGISTER << 24) | (GDC_CMD_BODY_FORE_COLOR << 16); | |
298 | cmd[3] = fg; | |
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; | |
302 | ||
303 | mb862xxfb_write_fifo(7, cmd, info); | |
304 | } | |
305 | ||
306 | void mb862xxfb_init_accel(struct fb_info *info, int xres) | |
307 | { | |
308 | struct mb862xxfb_par *par = info->par; | |
309 | ||
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; | |
314 | } else { | |
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; | |
319 | } | |
320 | outreg(draw, GDC_REG_DRAW_BASE, 0); | |
321 | outreg(draw, GDC_REG_MODE_MISC, 0x8000); | |
322 | outreg(draw, GDC_REG_X_RESOLUTION, xres); | |
323 | ||
324 | info->flags |= | |
325 | FBINFO_HWACCEL_COPYAREA | FBINFO_HWACCEL_FILLRECT | | |
326 | FBINFO_HWACCEL_IMAGEBLIT; | |
327 | info->fix.accel = 0xff; /*FIXME: add right define */ | |
328 | } | |
329 | EXPORT_SYMBOL(mb862xxfb_init_accel); | |
330 | ||
331 | MODULE_LICENSE("GPL v2"); |