2 * QEMU JAZZ LED emulator.
4 * Copyright (c) 2007-2012 Herve Poussineau
6 * Permission is hereby granted, free of charge, to any person obtaining a copy
7 * of this software and associated documentation files (the "Software"), to deal
8 * in the Software without restriction, including without limitation the rights
9 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
10 * copies of the Software, and to permit persons to whom the Software is
11 * furnished to do so, subject to the following conditions:
13 * The above copyright notice and this permission notice shall be included in
14 * all copies or substantial portions of the Software.
16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
19 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
20 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
21 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
25 #include "qemu-common.h"
26 #include "ui/console.h"
27 #include "ui/pixel_ops.h"
29 #include "hw/sysbus.h"
32 REDRAW_NONE = 0, REDRAW_SEGMENTS = 1, REDRAW_BACKGROUND = 2,
35 typedef struct LedState {
43 static uint64_t jazz_led_read(void *opaque, hwaddr addr,
50 trace_jazz_led_read(addr, val);
55 static void jazz_led_write(void *opaque, hwaddr addr,
56 uint64_t val, unsigned int size)
59 uint8_t new_val = val & 0xff;
61 trace_jazz_led_write(addr, new_val);
63 s->segments = new_val;
64 s->state |= REDRAW_SEGMENTS;
67 static 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,
75 /***********************************************************/
76 /* jazz_led display */
78 static void draw_horizontal_line(DisplaySurface *ds,
79 int posy, int posx1, int posx2,
85 bpp = (surface_bits_per_pixel(ds) + 7) >> 3;
86 d = surface_data(ds) + surface_stride(ds) * posy + bpp * posx1;
89 for (x = posx1; x <= posx2; x++) {
90 *((uint8_t *)d) = color;
95 for (x = posx1; x <= posx2; x++) {
96 *((uint16_t *)d) = color;
101 for (x = posx1; x <= posx2; x++) {
102 *((uint32_t *)d) = color;
109 static void draw_vertical_line(DisplaySurface *ds,
110 int posx, int posy1, int posy2,
116 bpp = (surface_bits_per_pixel(ds) + 7) >> 3;
117 d = surface_data(ds) + surface_stride(ds) * posy1 + bpp * posx;
120 for (y = posy1; y <= posy2; y++) {
121 *((uint8_t *)d) = color;
122 d += surface_stride(ds);
126 for (y = posy1; y <= posy2; y++) {
127 *((uint16_t *)d) = color;
128 d += surface_stride(ds);
132 for (y = posy1; y <= posy2; y++) {
133 *((uint32_t *)d) = color;
134 d += surface_stride(ds);
140 static void jazz_led_update_display(void *opaque)
142 LedState *s = opaque;
143 DisplaySurface *surface = qemu_console_surface(s->con);
145 uint32_t color_segment, color_led;
148 if (s->state & REDRAW_BACKGROUND) {
150 bpp = (surface_bits_per_pixel(surface) + 7) >> 3;
151 d1 = surface_data(surface);
152 for (y = 0; y < surface_height(surface); y++) {
153 memset(d1, 0x00, surface_width(surface) * bpp);
154 d1 += surface_stride(surface);
158 if (s->state & REDRAW_SEGMENTS) {
159 /* set colors according to bpp */
160 switch (surface_bits_per_pixel(surface)) {
162 color_segment = rgb_to_pixel8(0xaa, 0xaa, 0xaa);
163 color_led = rgb_to_pixel8(0x00, 0xff, 0x00);
166 color_segment = rgb_to_pixel15(0xaa, 0xaa, 0xaa);
167 color_led = rgb_to_pixel15(0x00, 0xff, 0x00);
170 color_segment = rgb_to_pixel16(0xaa, 0xaa, 0xaa);
171 color_led = rgb_to_pixel16(0x00, 0xff, 0x00);
173 color_segment = rgb_to_pixel24(0xaa, 0xaa, 0xaa);
174 color_led = rgb_to_pixel24(0x00, 0xff, 0x00);
177 color_segment = rgb_to_pixel32(0xaa, 0xaa, 0xaa);
178 color_led = rgb_to_pixel32(0x00, 0xff, 0x00);
184 /* display segments */
185 draw_horizontal_line(surface, 40, 10, 40,
186 (s->segments & 0x02) ? color_segment : 0);
187 draw_vertical_line(surface, 10, 10, 40,
188 (s->segments & 0x04) ? color_segment : 0);
189 draw_vertical_line(surface, 10, 40, 70,
190 (s->segments & 0x08) ? color_segment : 0);
191 draw_horizontal_line(surface, 70, 10, 40,
192 (s->segments & 0x10) ? color_segment : 0);
193 draw_vertical_line(surface, 40, 40, 70,
194 (s->segments & 0x20) ? color_segment : 0);
195 draw_vertical_line(surface, 40, 10, 40,
196 (s->segments & 0x40) ? color_segment : 0);
197 draw_horizontal_line(surface, 10, 10, 40,
198 (s->segments & 0x80) ? color_segment : 0);
201 if (!(s->segments & 0x01))
202 color_led = 0; /* black */
203 draw_horizontal_line(surface, 68, 50, 50, color_led);
204 draw_horizontal_line(surface, 69, 49, 51, color_led);
205 draw_horizontal_line(surface, 70, 48, 52, color_led);
206 draw_horizontal_line(surface, 71, 49, 51, color_led);
207 draw_horizontal_line(surface, 72, 50, 50, color_led);
210 s->state = REDRAW_NONE;
211 dpy_gfx_update(s->con, 0, 0,
212 surface_width(surface), surface_height(surface));
215 static void jazz_led_invalidate_display(void *opaque)
217 LedState *s = opaque;
218 s->state |= REDRAW_SEGMENTS | REDRAW_BACKGROUND;
221 static void jazz_led_text_update(void *opaque, console_ch_t *chardata)
223 LedState *s = opaque;
226 dpy_text_cursor(s->con, -1, -1);
227 qemu_console_resize(s->con, 2, 1);
229 /* TODO: draw the segments */
230 snprintf(buf, 2, "%02hhx\n", s->segments);
231 console_write_ch(chardata++, 0x00200100 | buf[0]);
232 console_write_ch(chardata++, 0x00200100 | buf[1]);
234 dpy_text_update(s->con, 0, 0, 2, 1);
237 static int jazz_led_post_load(void *opaque, int version_id)
240 jazz_led_invalidate_display(opaque);
245 static const VMStateDescription vmstate_jazz_led = {
248 .minimum_version_id = 0,
249 .minimum_version_id_old = 0,
250 .post_load = jazz_led_post_load,
251 .fields = (VMStateField[]) {
252 VMSTATE_UINT8(segments, LedState),
253 VMSTATE_END_OF_LIST()
257 static const GraphicHwOps jazz_led_ops = {
258 .invalidate = jazz_led_invalidate_display,
259 .gfx_update = jazz_led_update_display,
260 .text_update = jazz_led_text_update,
263 static int jazz_led_init(SysBusDevice *dev)
265 LedState *s = FROM_SYSBUS(LedState, dev);
267 memory_region_init_io(&s->iomem, OBJECT(s), &led_ops, s, "led", 1);
268 sysbus_init_mmio(dev, &s->iomem);
270 s->con = graphic_console_init(DEVICE(dev), &jazz_led_ops, s);
275 static void jazz_led_reset(DeviceState *d)
277 LedState *s = DO_UPCAST(LedState, busdev.qdev, d);
280 s->state = REDRAW_SEGMENTS | REDRAW_BACKGROUND;
281 qemu_console_resize(s->con, 60, 80);
284 static void jazz_led_class_init(ObjectClass *klass, void *data)
286 DeviceClass *dc = DEVICE_CLASS(klass);
287 SysBusDeviceClass *k = SYS_BUS_DEVICE_CLASS(klass);
289 k->init = jazz_led_init;
290 dc->desc = "Jazz LED display",
291 dc->vmsd = &vmstate_jazz_led;
292 dc->reset = jazz_led_reset;
295 static const TypeInfo jazz_led_info = {
297 .parent = TYPE_SYS_BUS_DEVICE,
298 .instance_size = sizeof(LedState),
299 .class_init = jazz_led_class_init,
302 static void jazz_led_register(void)
304 type_register_static(&jazz_led_info);
307 type_init(jazz_led_register);