2 * SSD0323 OLED controller with OSRAM Pictiva 128x64 display.
4 * Copyright (c) 2006-2007 CodeSourcery.
5 * Written by Paul Brook
7 * This code is licenced under the GPL.
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
15 //#define DEBUG_SSD0323 1
18 #define DPRINTF(fmt, args...) \
19 do { printf("ssd0323: " fmt , ##args); } while (0)
20 #define BADF(fmt, args...) \
21 do { fprintf(stderr, "ssd0323: error: " fmt , ##args); exit(1);} while (0)
23 #define DPRINTF(fmt, args...) do {} while(0)
24 #define BADF(fmt, args...) \
25 do { fprintf(stderr, "ssd0323: error: " fmt , ##args);} while (0)
28 /* Scaling factor for pixels. */
50 enum ssd0323_mode mode;
51 uint8_t framebuffer[128 * 80 / 2];
54 int ssd0323_xfer_ssi(void *opaque, int data)
56 ssd0323_state *s = (ssd0323_state *)opaque;
59 DPRINTF("data 0x%02x\n", data);
60 s->framebuffer[s->col + s->row * 64] = data;
62 if (s->col > s->col_end) {
64 s->col = s->col_start;
66 if (s->row > s->row_end) {
67 s->row = s->row_start;
72 DPRINTF("cmd 0x%02x\n", data);
73 if (s->cmd_len == 0) {
76 s->cmd_data[s->cmd_len - 1] = data;
80 #define DATA(x) if (s->cmd_len <= (x)) return 0
81 case 0x15: /* Set column. */
83 s->col_start = s->cmd_data[0] % 64;
84 s->col_end = s->cmd_data[1] % 64;
86 case 0x75: /* Set row. */
88 s->row_start = s->cmd_data[0] % 80;
89 s->row_end = s->cmd_data[1] % 80;
91 case 0x81: /* Set contrast */
94 case 0x84: case 0x85: case 0x86: /* Max current. */
97 case 0xa0: /* Set remapping. */
98 /* FIXME: Implement this. */
101 case 0xa1: /* Set display start line. */
102 case 0xa2: /* Set display offset. */
103 /* FIXME: Implement these. */
106 case 0xa4: /* Normal mode. */
107 case 0xa5: /* All on. */
108 case 0xa6: /* All off. */
109 case 0xa7: /* Inverse. */
110 /* FIXME: Implement these. */
113 case 0xa8: /* Set multiplex ratio. */
114 case 0xad: /* Set DC-DC converter. */
116 /* Ignored. Don't care. */
118 case 0xae: /* Display off. */
119 case 0xaf: /* Display on. */
121 /* TODO: Implement power control. */
123 case 0xb1: /* Set phase length. */
124 case 0xb2: /* Set row period. */
125 case 0xb3: /* Set clock rate. */
126 case 0xbc: /* Set precharge. */
127 case 0xbe: /* Set VCOMH. */
128 case 0xbf: /* Set segment low. */
130 /* Ignored. Don't care. */
132 case 0xb8: /* Set grey scale table. */
133 /* FIXME: Implement this. */
136 case 0xe3: /* NOP. */
140 BADF("Unknown command: 0x%x\n", data);
148 static void ssd0323_update_display(void *opaque)
150 ssd0323_state *s = (ssd0323_state *)opaque;
158 char colortab[MAGNIFY * 64];
163 switch (s->ds->depth) {
179 BADF("Bad color depth\n");
183 for (i = 0; i < 16; i++) {
186 switch (s->ds->depth) {
188 n = i * 2 + (i >> 3);
190 p[1] = (n << 2) | (n >> 3);
193 n = i * 2 + (i >> 3);
194 p[0] = n | (n << 6) | ((n << 1) & 0x20);
195 p[1] = (n << 3) | (n >> 2);
200 p[0] = p[1] = p[2] = n;
203 BADF("Bad color depth\n");
209 for (y = 0; y < 64; y++) {
211 src = s->framebuffer + 64 * line;
212 for (x = 0; x < 64; x++) {
215 for (i = 0; i < MAGNIFY; i++) {
216 memcpy(dest, colors[val], dest_width);
220 for (i = 0; i < MAGNIFY; i++) {
221 memcpy(dest, colors[val], dest_width);
226 for (i = 1; i < MAGNIFY; i++) {
227 memcpy(dest, dest - dest_width * MAGNIFY * 128,
228 dest_width * 128 * MAGNIFY);
229 dest += dest_width * 128 * MAGNIFY;
233 dpy_update(s->ds, 0, 0, 128 * MAGNIFY, 64 * MAGNIFY);
236 static void ssd0323_invalidate_display(void * opaque)
238 ssd0323_state *s = (ssd0323_state *)opaque;
242 /* Command/data input. */
243 static void ssd0323_cd(void *opaque, int n, int level)
245 ssd0323_state *s = (ssd0323_state *)opaque;
246 DPRINTF("%s mode\n", level ? "Data" : "Command");
247 s->mode = level ? SSD0323_DATA : SSD0323_CMD;
250 void *ssd0323_init(DisplayState *ds, qemu_irq *cmd_p)
255 s = (ssd0323_state *)qemu_mallocz(sizeof(ssd0323_state));
257 graphic_console_init(ds, ssd0323_update_display, ssd0323_invalidate_display,
259 dpy_resize(s->ds, 128 * MAGNIFY, 64 * MAGNIFY);
263 cmd = qemu_allocate_irqs(ssd0323_cd, s, 1);