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25#include "qemu-common.h"
26#include "ui/console.h"
27#include "ui/pixel_ops.h"
28#include "trace.h"
29#include "sysbus.h"
30
31typedef enum {
32 REDRAW_NONE = 0, REDRAW_SEGMENTS = 1, REDRAW_BACKGROUND = 2,
33} screen_state_t;
34
35typedef struct LedState {
36 SysBusDevice busdev;
37 MemoryRegion iomem;
38 uint8_t segments;
39 DisplayState *ds;
40 screen_state_t state;
41} LedState;
42
43static uint64_t jazz_led_read(void *opaque, hwaddr addr,
44 unsigned int size)
45{
46 LedState *s = opaque;
47 uint8_t val;
48
49 val = s->segments;
50 trace_jazz_led_read(addr, val);
51
52 return val;
53}
54
55static void jazz_led_write(void *opaque, hwaddr addr,
56 uint64_t val, unsigned int size)
57{
58 LedState *s = opaque;
59 uint8_t new_val = val & 0xff;
60
61 trace_jazz_led_write(addr, new_val);
62
63 s->segments = new_val;
64 s->state |= REDRAW_SEGMENTS;
65}
66
67static const MemoryRegionOps led_ops = {
68 .read = jazz_led_read,
69 .write = jazz_led_write,
70 .endianness = DEVICE_NATIVE_ENDIAN,
71 .impl.min_access_size = 1,
72 .impl.max_access_size = 1,
73};
74
75
76
77
78static void draw_horizontal_line(DisplayState *ds, int posy, int posx1, int posx2, uint32_t color)
79{
80 uint8_t *d;
81 int x, bpp;
82
83 bpp = (ds_get_bits_per_pixel(ds) + 7) >> 3;
84 d = ds_get_data(ds) + ds_get_linesize(ds) * posy + bpp * posx1;
85 switch(bpp) {
86 case 1:
87 for (x = posx1; x <= posx2; x++) {
88 *((uint8_t *)d) = color;
89 d++;
90 }
91 break;
92 case 2:
93 for (x = posx1; x <= posx2; x++) {
94 *((uint16_t *)d) = color;
95 d += 2;
96 }
97 break;
98 case 4:
99 for (x = posx1; x <= posx2; x++) {
100 *((uint32_t *)d) = color;
101 d += 4;
102 }
103 break;
104 }
105}
106
107static void draw_vertical_line(DisplayState *ds, int posx, int posy1, int posy2, uint32_t color)
108{
109 uint8_t *d;
110 int y, bpp;
111
112 bpp = (ds_get_bits_per_pixel(ds) + 7) >> 3;
113 d = ds_get_data(ds) + ds_get_linesize(ds) * posy1 + bpp * posx;
114 switch(bpp) {
115 case 1:
116 for (y = posy1; y <= posy2; y++) {
117 *((uint8_t *)d) = color;
118 d += ds_get_linesize(ds);
119 }
120 break;
121 case 2:
122 for (y = posy1; y <= posy2; y++) {
123 *((uint16_t *)d) = color;
124 d += ds_get_linesize(ds);
125 }
126 break;
127 case 4:
128 for (y = posy1; y <= posy2; y++) {
129 *((uint32_t *)d) = color;
130 d += ds_get_linesize(ds);
131 }
132 break;
133 }
134}
135
136static void jazz_led_update_display(void *opaque)
137{
138 LedState *s = opaque;
139 DisplayState *ds = s->ds;
140 uint8_t *d1;
141 uint32_t color_segment, color_led;
142 int y, bpp;
143
144 if (s->state & REDRAW_BACKGROUND) {
145
146 bpp = (ds_get_bits_per_pixel(ds) + 7) >> 3;
147 d1 = ds_get_data(ds);
148 for (y = 0; y < ds_get_height(ds); y++) {
149 memset(d1, 0x00, ds_get_width(ds) * bpp);
150 d1 += ds_get_linesize(ds);
151 }
152 }
153
154 if (s->state & REDRAW_SEGMENTS) {
155
156 switch (ds_get_bits_per_pixel(ds)) {
157 case 8:
158 color_segment = rgb_to_pixel8(0xaa, 0xaa, 0xaa);
159 color_led = rgb_to_pixel8(0x00, 0xff, 0x00);
160 break;
161 case 15:
162 color_segment = rgb_to_pixel15(0xaa, 0xaa, 0xaa);
163 color_led = rgb_to_pixel15(0x00, 0xff, 0x00);
164 break;
165 case 16:
166 color_segment = rgb_to_pixel16(0xaa, 0xaa, 0xaa);
167 color_led = rgb_to_pixel16(0x00, 0xff, 0x00);
168 case 24:
169 color_segment = rgb_to_pixel24(0xaa, 0xaa, 0xaa);
170 color_led = rgb_to_pixel24(0x00, 0xff, 0x00);
171 break;
172 case 32:
173 color_segment = rgb_to_pixel32(0xaa, 0xaa, 0xaa);
174 color_led = rgb_to_pixel32(0x00, 0xff, 0x00);
175 break;
176 default:
177 return;
178 }
179
180
181 draw_horizontal_line(ds, 40, 10, 40, (s->segments & 0x02) ? color_segment : 0);
182 draw_vertical_line(ds, 10, 10, 40, (s->segments & 0x04) ? color_segment : 0);
183 draw_vertical_line(ds, 10, 40, 70, (s->segments & 0x08) ? color_segment : 0);
184 draw_horizontal_line(ds, 70, 10, 40, (s->segments & 0x10) ? color_segment : 0);
185 draw_vertical_line(ds, 40, 40, 70, (s->segments & 0x20) ? color_segment : 0);
186 draw_vertical_line(ds, 40, 10, 40, (s->segments & 0x40) ? color_segment : 0);
187 draw_horizontal_line(ds, 10, 10, 40, (s->segments & 0x80) ? color_segment : 0);
188
189
190 if (!(s->segments & 0x01))
191 color_led = 0;
192 draw_horizontal_line(ds, 68, 50, 50, color_led);
193 draw_horizontal_line(ds, 69, 49, 51, color_led);
194 draw_horizontal_line(ds, 70, 48, 52, color_led);
195 draw_horizontal_line(ds, 71, 49, 51, color_led);
196 draw_horizontal_line(ds, 72, 50, 50, color_led);
197 }
198
199 s->state = REDRAW_NONE;
200 dpy_gfx_update(ds, 0, 0, ds_get_width(ds), ds_get_height(ds));
201}
202
203static void jazz_led_invalidate_display(void *opaque)
204{
205 LedState *s = opaque;
206 s->state |= REDRAW_SEGMENTS | REDRAW_BACKGROUND;
207}
208
209static void jazz_led_text_update(void *opaque, console_ch_t *chardata)
210{
211 LedState *s = opaque;
212 char buf[2];
213
214 dpy_text_cursor(s->ds, -1, -1);
215 qemu_console_resize(s->ds, 2, 1);
216
217
218 snprintf(buf, 2, "%02hhx\n", s->segments);
219 console_write_ch(chardata++, 0x00200100 | buf[0]);
220 console_write_ch(chardata++, 0x00200100 | buf[1]);
221
222 dpy_text_update(s->ds, 0, 0, 2, 1);
223}
224
225static int jazz_led_post_load(void *opaque, int version_id)
226{
227
228 jazz_led_invalidate_display(opaque);
229
230 return 0;
231}
232
233static const VMStateDescription vmstate_jazz_led = {
234 .name = "jazz-led",
235 .version_id = 0,
236 .minimum_version_id = 0,
237 .minimum_version_id_old = 0,
238 .post_load = jazz_led_post_load,
239 .fields = (VMStateField[]) {
240 VMSTATE_UINT8(segments, LedState),
241 VMSTATE_END_OF_LIST()
242 }
243};
244
245static int jazz_led_init(SysBusDevice *dev)
246{
247 LedState *s = FROM_SYSBUS(LedState, dev);
248
249 memory_region_init_io(&s->iomem, &led_ops, s, "led", 1);
250 sysbus_init_mmio(dev, &s->iomem);
251
252 s->ds = graphic_console_init(jazz_led_update_display,
253 jazz_led_invalidate_display,
254 NULL,
255 jazz_led_text_update, s);
256
257 return 0;
258}
259
260static void jazz_led_reset(DeviceState *d)
261{
262 LedState *s = DO_UPCAST(LedState, busdev.qdev, d);
263
264 s->segments = 0;
265 s->state = REDRAW_SEGMENTS | REDRAW_BACKGROUND;
266 qemu_console_resize(s->ds, 60, 80);
267}
268
269static void jazz_led_class_init(ObjectClass *klass, void *data)
270{
271 DeviceClass *dc = DEVICE_CLASS(klass);
272 SysBusDeviceClass *k = SYS_BUS_DEVICE_CLASS(klass);
273
274 k->init = jazz_led_init;
275 dc->desc = "Jazz LED display",
276 dc->vmsd = &vmstate_jazz_led;
277 dc->reset = jazz_led_reset;
278}
279
280static const TypeInfo jazz_led_info = {
281 .name = "jazz-led",
282 .parent = TYPE_SYS_BUS_DEVICE,
283 .instance_size = sizeof(LedState),
284 .class_init = jazz_led_class_init,
285};
286
287static void jazz_led_register(void)
288{
289 type_register_static(&jazz_led_info);
290}
291
292type_init(jazz_led_register);
293
