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Commit | Line | Data |
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9ee6e8bb PB |
1 | /* |
2 | * SSD0323 OLED controller with OSRAM Pictiva 128x64 display. | |
3 | * | |
4 | * Copyright (c) 2006-2007 CodeSourcery. | |
5 | * Written by Paul Brook | |
6 | * | |
8e31bf38 | 7 | * This code is licensed under the GPL. |
9ee6e8bb PB |
8 | */ |
9 | ||
10 | /* The controller can support a variety of different displays, but we only | |
11 | implement one. Most of the commends relating to brightness and geometry | |
12 | setup are ignored. */ | |
5493e33f | 13 | #include "ssi.h" |
87ecb68b | 14 | #include "console.h" |
9ee6e8bb PB |
15 | |
16 | //#define DEBUG_SSD0323 1 | |
17 | ||
18 | #ifdef DEBUG_SSD0323 | |
001faf32 BS |
19 | #define DPRINTF(fmt, ...) \ |
20 | do { printf("ssd0323: " fmt , ## __VA_ARGS__); } while (0) | |
21 | #define BADF(fmt, ...) \ | |
b1c26542 PC |
22 | do { \ |
23 | fprintf(stderr, "ssd0323: error: " fmt , ## __VA_ARGS__); abort(); \ | |
24 | } while (0) | |
9ee6e8bb | 25 | #else |
001faf32 BS |
26 | #define DPRINTF(fmt, ...) do {} while(0) |
27 | #define BADF(fmt, ...) \ | |
28 | do { fprintf(stderr, "ssd0323: error: " fmt , ## __VA_ARGS__);} while (0) | |
9ee6e8bb PB |
29 | #endif |
30 | ||
31 | /* Scaling factor for pixels. */ | |
32 | #define MAGNIFY 4 | |
33 | ||
7ac56ff0 PB |
34 | #define REMAP_SWAP_COLUMN 0x01 |
35 | #define REMAP_SWAP_NYBBLE 0x02 | |
36 | #define REMAP_VERTICAL 0x04 | |
37 | #define REMAP_SWAP_COM 0x10 | |
38 | #define REMAP_SPLIT_COM 0x40 | |
39 | ||
9ee6e8bb PB |
40 | enum ssd0323_mode |
41 | { | |
42 | SSD0323_CMD, | |
43 | SSD0323_DATA | |
44 | }; | |
45 | ||
46 | typedef struct { | |
5493e33f | 47 | SSISlave ssidev; |
9ee6e8bb PB |
48 | DisplayState *ds; |
49 | ||
50 | int cmd_len; | |
51 | int cmd; | |
52 | int cmd_data[8]; | |
53 | int row; | |
54 | int row_start; | |
55 | int row_end; | |
56 | int col; | |
57 | int col_start; | |
58 | int col_end; | |
59 | int redraw; | |
7ac56ff0 | 60 | int remap; |
9ee6e8bb PB |
61 | enum ssd0323_mode mode; |
62 | uint8_t framebuffer[128 * 80 / 2]; | |
63 | } ssd0323_state; | |
64 | ||
5493e33f | 65 | static uint32_t ssd0323_transfer(SSISlave *dev, uint32_t data) |
9ee6e8bb | 66 | { |
5493e33f PB |
67 | ssd0323_state *s = FROM_SSI_SLAVE(ssd0323_state, dev); |
68 | ||
9ee6e8bb PB |
69 | switch (s->mode) { |
70 | case SSD0323_DATA: | |
71 | DPRINTF("data 0x%02x\n", data); | |
72 | s->framebuffer[s->col + s->row * 64] = data; | |
7ac56ff0 | 73 | if (s->remap & REMAP_VERTICAL) { |
9ee6e8bb | 74 | s->row++; |
7ac56ff0 PB |
75 | if (s->row > s->row_end) { |
76 | s->row = s->row_start; | |
77 | s->col++; | |
78 | } | |
79 | if (s->col > s->col_end) { | |
80 | s->col = s->col_start; | |
81 | } | |
82 | } else { | |
83 | s->col++; | |
84 | if (s->col > s->col_end) { | |
85 | s->row++; | |
86 | s->col = s->col_start; | |
87 | } | |
88 | if (s->row > s->row_end) { | |
89 | s->row = s->row_start; | |
90 | } | |
9ee6e8bb PB |
91 | } |
92 | s->redraw = 1; | |
93 | break; | |
94 | case SSD0323_CMD: | |
95 | DPRINTF("cmd 0x%02x\n", data); | |
96 | if (s->cmd_len == 0) { | |
97 | s->cmd = data; | |
98 | } else { | |
99 | s->cmd_data[s->cmd_len - 1] = data; | |
100 | } | |
101 | s->cmd_len++; | |
102 | switch (s->cmd) { | |
103 | #define DATA(x) if (s->cmd_len <= (x)) return 0 | |
104 | case 0x15: /* Set column. */ | |
105 | DATA(2); | |
7ac56ff0 | 106 | s->col = s->col_start = s->cmd_data[0] % 64; |
9ee6e8bb PB |
107 | s->col_end = s->cmd_data[1] % 64; |
108 | break; | |
109 | case 0x75: /* Set row. */ | |
110 | DATA(2); | |
7ac56ff0 | 111 | s->row = s->row_start = s->cmd_data[0] % 80; |
9ee6e8bb PB |
112 | s->row_end = s->cmd_data[1] % 80; |
113 | break; | |
114 | case 0x81: /* Set contrast */ | |
115 | DATA(1); | |
116 | break; | |
117 | case 0x84: case 0x85: case 0x86: /* Max current. */ | |
118 | DATA(0); | |
119 | break; | |
120 | case 0xa0: /* Set remapping. */ | |
121 | /* FIXME: Implement this. */ | |
122 | DATA(1); | |
7ac56ff0 | 123 | s->remap = s->cmd_data[0]; |
9ee6e8bb PB |
124 | break; |
125 | case 0xa1: /* Set display start line. */ | |
126 | case 0xa2: /* Set display offset. */ | |
127 | /* FIXME: Implement these. */ | |
128 | DATA(1); | |
129 | break; | |
130 | case 0xa4: /* Normal mode. */ | |
131 | case 0xa5: /* All on. */ | |
132 | case 0xa6: /* All off. */ | |
133 | case 0xa7: /* Inverse. */ | |
134 | /* FIXME: Implement these. */ | |
135 | DATA(0); | |
136 | break; | |
137 | case 0xa8: /* Set multiplex ratio. */ | |
138 | case 0xad: /* Set DC-DC converter. */ | |
139 | DATA(1); | |
140 | /* Ignored. Don't care. */ | |
141 | break; | |
142 | case 0xae: /* Display off. */ | |
143 | case 0xaf: /* Display on. */ | |
144 | DATA(0); | |
145 | /* TODO: Implement power control. */ | |
146 | break; | |
147 | case 0xb1: /* Set phase length. */ | |
148 | case 0xb2: /* Set row period. */ | |
149 | case 0xb3: /* Set clock rate. */ | |
150 | case 0xbc: /* Set precharge. */ | |
151 | case 0xbe: /* Set VCOMH. */ | |
152 | case 0xbf: /* Set segment low. */ | |
153 | DATA(1); | |
154 | /* Ignored. Don't care. */ | |
155 | break; | |
156 | case 0xb8: /* Set grey scale table. */ | |
157 | /* FIXME: Implement this. */ | |
158 | DATA(8); | |
159 | break; | |
160 | case 0xe3: /* NOP. */ | |
161 | DATA(0); | |
162 | break; | |
775616c3 PB |
163 | case 0xff: /* Nasty hack because we don't handle chip selects |
164 | properly. */ | |
165 | break; | |
9ee6e8bb PB |
166 | default: |
167 | BADF("Unknown command: 0x%x\n", data); | |
168 | } | |
169 | s->cmd_len = 0; | |
170 | return 0; | |
171 | } | |
172 | return 0; | |
173 | } | |
174 | ||
175 | static void ssd0323_update_display(void *opaque) | |
176 | { | |
177 | ssd0323_state *s = (ssd0323_state *)opaque; | |
178 | uint8_t *dest; | |
179 | uint8_t *src; | |
180 | int x; | |
181 | int y; | |
182 | int i; | |
183 | int line; | |
184 | char *colors[16]; | |
185 | char colortab[MAGNIFY * 64]; | |
186 | char *p; | |
187 | int dest_width; | |
188 | ||
b115bb3f PB |
189 | if (!s->redraw) |
190 | return; | |
191 | ||
0e1f5a0c | 192 | switch (ds_get_bits_per_pixel(s->ds)) { |
b115bb3f PB |
193 | case 0: |
194 | return; | |
195 | case 15: | |
196 | dest_width = 2; | |
197 | break; | |
198 | case 16: | |
199 | dest_width = 2; | |
200 | break; | |
201 | case 24: | |
202 | dest_width = 3; | |
203 | break; | |
204 | case 32: | |
205 | dest_width = 4; | |
206 | break; | |
207 | default: | |
208 | BADF("Bad color depth\n"); | |
209 | return; | |
210 | } | |
211 | p = colortab; | |
212 | for (i = 0; i < 16; i++) { | |
213 | int n; | |
214 | colors[i] = p; | |
0e1f5a0c | 215 | switch (ds_get_bits_per_pixel(s->ds)) { |
9ee6e8bb | 216 | case 15: |
b115bb3f PB |
217 | n = i * 2 + (i >> 3); |
218 | p[0] = n | (n << 5); | |
219 | p[1] = (n << 2) | (n >> 3); | |
9ee6e8bb PB |
220 | break; |
221 | case 16: | |
b115bb3f PB |
222 | n = i * 2 + (i >> 3); |
223 | p[0] = n | (n << 6) | ((n << 1) & 0x20); | |
224 | p[1] = (n << 3) | (n >> 2); | |
9ee6e8bb PB |
225 | break; |
226 | case 24: | |
9ee6e8bb | 227 | case 32: |
b115bb3f PB |
228 | n = (i << 4) | i; |
229 | p[0] = p[1] = p[2] = n; | |
9ee6e8bb PB |
230 | break; |
231 | default: | |
232 | BADF("Bad color depth\n"); | |
233 | return; | |
234 | } | |
b115bb3f PB |
235 | p += dest_width; |
236 | } | |
237 | /* TODO: Implement row/column remapping. */ | |
0e1f5a0c | 238 | dest = ds_get_data(s->ds); |
b115bb3f PB |
239 | for (y = 0; y < 64; y++) { |
240 | line = y; | |
241 | src = s->framebuffer + 64 * line; | |
242 | for (x = 0; x < 64; x++) { | |
243 | int val; | |
244 | val = *src >> 4; | |
245 | for (i = 0; i < MAGNIFY; i++) { | |
246 | memcpy(dest, colors[val], dest_width); | |
247 | dest += dest_width; | |
9ee6e8bb | 248 | } |
b115bb3f PB |
249 | val = *src & 0xf; |
250 | for (i = 0; i < MAGNIFY; i++) { | |
251 | memcpy(dest, colors[val], dest_width); | |
252 | dest += dest_width; | |
9ee6e8bb | 253 | } |
b115bb3f PB |
254 | src++; |
255 | } | |
256 | for (i = 1; i < MAGNIFY; i++) { | |
257 | memcpy(dest, dest - dest_width * MAGNIFY * 128, | |
258 | dest_width * 128 * MAGNIFY); | |
259 | dest += dest_width * 128 * MAGNIFY; | |
9ee6e8bb PB |
260 | } |
261 | } | |
b115bb3f | 262 | s->redraw = 0; |
9ee6e8bb PB |
263 | dpy_update(s->ds, 0, 0, 128 * MAGNIFY, 64 * MAGNIFY); |
264 | } | |
265 | ||
266 | static void ssd0323_invalidate_display(void * opaque) | |
267 | { | |
268 | ssd0323_state *s = (ssd0323_state *)opaque; | |
269 | s->redraw = 1; | |
270 | } | |
271 | ||
272 | /* Command/data input. */ | |
273 | static void ssd0323_cd(void *opaque, int n, int level) | |
274 | { | |
275 | ssd0323_state *s = (ssd0323_state *)opaque; | |
276 | DPRINTF("%s mode\n", level ? "Data" : "Command"); | |
277 | s->mode = level ? SSD0323_DATA : SSD0323_CMD; | |
278 | } | |
279 | ||
23e39294 PB |
280 | static void ssd0323_save(QEMUFile *f, void *opaque) |
281 | { | |
66530953 | 282 | SSISlave *ss = SSI_SLAVE(opaque); |
23e39294 PB |
283 | ssd0323_state *s = (ssd0323_state *)opaque; |
284 | int i; | |
285 | ||
286 | qemu_put_be32(f, s->cmd_len); | |
287 | qemu_put_be32(f, s->cmd); | |
288 | for (i = 0; i < 8; i++) | |
289 | qemu_put_be32(f, s->cmd_data[i]); | |
290 | qemu_put_be32(f, s->row); | |
291 | qemu_put_be32(f, s->row_start); | |
292 | qemu_put_be32(f, s->row_end); | |
293 | qemu_put_be32(f, s->col); | |
294 | qemu_put_be32(f, s->col_start); | |
295 | qemu_put_be32(f, s->col_end); | |
296 | qemu_put_be32(f, s->redraw); | |
297 | qemu_put_be32(f, s->remap); | |
298 | qemu_put_be32(f, s->mode); | |
299 | qemu_put_buffer(f, s->framebuffer, sizeof(s->framebuffer)); | |
66530953 PC |
300 | |
301 | qemu_put_be32(f, ss->cs); | |
23e39294 PB |
302 | } |
303 | ||
304 | static int ssd0323_load(QEMUFile *f, void *opaque, int version_id) | |
305 | { | |
66530953 | 306 | SSISlave *ss = SSI_SLAVE(opaque); |
23e39294 PB |
307 | ssd0323_state *s = (ssd0323_state *)opaque; |
308 | int i; | |
309 | ||
310 | if (version_id != 1) | |
311 | return -EINVAL; | |
312 | ||
313 | s->cmd_len = qemu_get_be32(f); | |
314 | s->cmd = qemu_get_be32(f); | |
315 | for (i = 0; i < 8; i++) | |
316 | s->cmd_data[i] = qemu_get_be32(f); | |
317 | s->row = qemu_get_be32(f); | |
318 | s->row_start = qemu_get_be32(f); | |
319 | s->row_end = qemu_get_be32(f); | |
320 | s->col = qemu_get_be32(f); | |
321 | s->col_start = qemu_get_be32(f); | |
322 | s->col_end = qemu_get_be32(f); | |
323 | s->redraw = qemu_get_be32(f); | |
324 | s->remap = qemu_get_be32(f); | |
325 | s->mode = qemu_get_be32(f); | |
326 | qemu_get_buffer(f, s->framebuffer, sizeof(s->framebuffer)); | |
327 | ||
66530953 PC |
328 | ss->cs = qemu_get_be32(f); |
329 | ||
23e39294 PB |
330 | return 0; |
331 | } | |
332 | ||
81a322d4 | 333 | static int ssd0323_init(SSISlave *dev) |
9ee6e8bb | 334 | { |
5493e33f | 335 | ssd0323_state *s = FROM_SSI_SLAVE(ssd0323_state, dev); |
9ee6e8bb | 336 | |
9ee6e8bb PB |
337 | s->col_end = 63; |
338 | s->row_end = 79; | |
3023f332 AL |
339 | s->ds = graphic_console_init(ssd0323_update_display, |
340 | ssd0323_invalidate_display, | |
341 | NULL, NULL, s); | |
342 | qemu_console_resize(s->ds, 128 * MAGNIFY, 64 * MAGNIFY); | |
9ee6e8bb | 343 | |
5493e33f | 344 | qdev_init_gpio_in(&dev->qdev, ssd0323_cd, 1); |
9ee6e8bb | 345 | |
0be71e32 AW |
346 | register_savevm(&dev->qdev, "ssd0323_oled", -1, 1, |
347 | ssd0323_save, ssd0323_load, s); | |
81a322d4 | 348 | return 0; |
5493e33f | 349 | } |
23e39294 | 350 | |
cd6c4cf2 AL |
351 | static void ssd0323_class_init(ObjectClass *klass, void *data) |
352 | { | |
353 | SSISlaveClass *k = SSI_SLAVE_CLASS(klass); | |
354 | ||
355 | k->init = ssd0323_init; | |
356 | k->transfer = ssd0323_transfer; | |
8120e714 | 357 | k->cs_polarity = SSI_CS_HIGH; |
cd6c4cf2 AL |
358 | } |
359 | ||
39bffca2 AL |
360 | static TypeInfo ssd0323_info = { |
361 | .name = "ssd0323", | |
362 | .parent = TYPE_SSI_SLAVE, | |
363 | .instance_size = sizeof(ssd0323_state), | |
364 | .class_init = ssd0323_class_init, | |
5493e33f PB |
365 | }; |
366 | ||
83f7d43a | 367 | static void ssd03232_register_types(void) |
5493e33f | 368 | { |
39bffca2 | 369 | type_register_static(&ssd0323_info); |
9ee6e8bb | 370 | } |
5493e33f | 371 | |
83f7d43a | 372 | type_init(ssd03232_register_types) |