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
17 //#define DEBUG_SSD0323 1
20 #define DPRINTF(fmt, args...) \
21 do { printf("ssd0323: " fmt , ##args); } while (0)
22 #define BADF(fmt, args...) \
23 do { fprintf(stderr, "ssd0323: error: " fmt , ##args); exit(1);} while (0)
25 #define DPRINTF(fmt, args...) do {} while(0)
26 #define BADF(fmt, args...) \
27 do { fprintf(stderr, "ssd0323: error: " fmt , ##args);} while (0)
30 /* Scaling factor for pixels. */
52 enum ssd0323_mode mode;
53 uint8_t framebuffer[128 * 80 / 2];
56 int ssd0323_xfer_ssi(void *opaque, int data)
58 ssd0323_state *s = (ssd0323_state *)opaque;
61 DPRINTF("data 0x%02x\n", data);
62 s->framebuffer[s->col + s->row * 64] = data;
64 if (s->col > s->col_end) {
66 s->col = s->col_start;
68 if (s->row > s->row_end) {
69 s->row = s->row_start;
74 DPRINTF("cmd 0x%02x\n", data);
75 if (s->cmd_len == 0) {
78 s->cmd_data[s->cmd_len - 1] = data;
82 #define DATA(x) if (s->cmd_len <= (x)) return 0
83 case 0x15: /* Set column. */
85 s->col_start = s->cmd_data[0] % 64;
86 s->col_end = s->cmd_data[1] % 64;
88 case 0x75: /* Set row. */
90 s->row_start = s->cmd_data[0] % 80;
91 s->row_end = s->cmd_data[1] % 80;
93 case 0x81: /* Set contrast */
96 case 0x84: case 0x85: case 0x86: /* Max current. */
99 case 0xa0: /* Set remapping. */
100 /* FIXME: Implement this. */
103 case 0xa1: /* Set display start line. */
104 case 0xa2: /* Set display offset. */
105 /* FIXME: Implement these. */
108 case 0xa4: /* Normal mode. */
109 case 0xa5: /* All on. */
110 case 0xa6: /* All off. */
111 case 0xa7: /* Inverse. */
112 /* FIXME: Implement these. */
115 case 0xa8: /* Set multiplex ratio. */
116 case 0xad: /* Set DC-DC converter. */
118 /* Ignored. Don't care. */
120 case 0xae: /* Display off. */
121 case 0xaf: /* Display on. */
123 /* TODO: Implement power control. */
125 case 0xb1: /* Set phase length. */
126 case 0xb2: /* Set row period. */
127 case 0xb3: /* Set clock rate. */
128 case 0xbc: /* Set precharge. */
129 case 0xbe: /* Set VCOMH. */
130 case 0xbf: /* Set segment low. */
132 /* Ignored. Don't care. */
134 case 0xb8: /* Set grey scale table. */
135 /* FIXME: Implement this. */
138 case 0xe3: /* NOP. */
142 BADF("Unknown command: 0x%x\n", data);
150 static void ssd0323_update_display(void *opaque)
152 ssd0323_state *s = (ssd0323_state *)opaque;
160 char colortab[MAGNIFY * 64];
165 switch (s->ds->depth) {
181 BADF("Bad color depth\n");
185 for (i = 0; i < 16; i++) {
188 switch (s->ds->depth) {
190 n = i * 2 + (i >> 3);
192 p[1] = (n << 2) | (n >> 3);
195 n = i * 2 + (i >> 3);
196 p[0] = n | (n << 6) | ((n << 1) & 0x20);
197 p[1] = (n << 3) | (n >> 2);
202 p[0] = p[1] = p[2] = n;
205 BADF("Bad color depth\n");
211 for (y = 0; y < 64; y++) {
213 src = s->framebuffer + 64 * line;
214 for (x = 0; x < 64; x++) {
217 for (i = 0; i < MAGNIFY; i++) {
218 memcpy(dest, colors[val], dest_width);
222 for (i = 0; i < MAGNIFY; i++) {
223 memcpy(dest, colors[val], dest_width);
228 for (i = 1; i < MAGNIFY; i++) {
229 memcpy(dest, dest - dest_width * MAGNIFY * 128,
230 dest_width * 128 * MAGNIFY);
231 dest += dest_width * 128 * MAGNIFY;
235 dpy_update(s->ds, 0, 0, 128 * MAGNIFY, 64 * MAGNIFY);
238 static void ssd0323_invalidate_display(void * opaque)
240 ssd0323_state *s = (ssd0323_state *)opaque;
244 /* Command/data input. */
245 static void ssd0323_cd(void *opaque, int n, int level)
247 ssd0323_state *s = (ssd0323_state *)opaque;
248 DPRINTF("%s mode\n", level ? "Data" : "Command");
249 s->mode = level ? SSD0323_DATA : SSD0323_CMD;
252 void *ssd0323_init(DisplayState *ds, qemu_irq *cmd_p)
257 s = (ssd0323_state *)qemu_mallocz(sizeof(ssd0323_state));
259 graphic_console_init(ds, ssd0323_update_display, ssd0323_invalidate_display,
261 dpy_resize(s->ds, 128 * MAGNIFY, 64 * MAGNIFY);
265 cmd = qemu_allocate_irqs(ssd0323_cd, s, 1);