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-rw-r--r--hw/display/jazz_led.c304
1 files changed, 304 insertions, 0 deletions
diff --git a/hw/display/jazz_led.c b/hw/display/jazz_led.c
new file mode 100644
index 0000000000..05528c7c81
--- /dev/null
+++ b/hw/display/jazz_led.c
@@ -0,0 +1,304 @@
+/*
+ * QEMU JAZZ LED emulator.
+ *
+ * Copyright (c) 2007-2012 Herve Poussineau
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+
+#include "qemu-common.h"
+#include "ui/console.h"
+#include "ui/pixel_ops.h"
+#include "trace.h"
+#include "hw/sysbus.h"
+
+typedef enum {
+ REDRAW_NONE = 0, REDRAW_SEGMENTS = 1, REDRAW_BACKGROUND = 2,
+} screen_state_t;
+
+typedef struct LedState {
+ SysBusDevice busdev;
+ MemoryRegion iomem;
+ uint8_t segments;
+ QemuConsole *con;
+ screen_state_t state;
+} LedState;
+
+static uint64_t jazz_led_read(void *opaque, hwaddr addr,
+ unsigned int size)
+{
+ LedState *s = opaque;
+ uint8_t val;
+
+ val = s->segments;
+ trace_jazz_led_read(addr, val);
+
+ return val;
+}
+
+static void jazz_led_write(void *opaque, hwaddr addr,
+ uint64_t val, unsigned int size)
+{
+ LedState *s = opaque;
+ uint8_t new_val = val & 0xff;
+
+ trace_jazz_led_write(addr, new_val);
+
+ s->segments = new_val;
+ s->state |= REDRAW_SEGMENTS;
+}
+
+static const MemoryRegionOps led_ops = {
+ .read = jazz_led_read,
+ .write = jazz_led_write,
+ .endianness = DEVICE_NATIVE_ENDIAN,
+ .impl.min_access_size = 1,
+ .impl.max_access_size = 1,
+};
+
+/***********************************************************/
+/* jazz_led display */
+
+static void draw_horizontal_line(DisplaySurface *ds,
+ int posy, int posx1, int posx2,
+ uint32_t color)
+{
+ uint8_t *d;
+ int x, bpp;
+
+ bpp = (surface_bits_per_pixel(ds) + 7) >> 3;
+ d = surface_data(ds) + surface_stride(ds) * posy + bpp * posx1;
+ switch(bpp) {
+ case 1:
+ for (x = posx1; x <= posx2; x++) {
+ *((uint8_t *)d) = color;
+ d++;
+ }
+ break;
+ case 2:
+ for (x = posx1; x <= posx2; x++) {
+ *((uint16_t *)d) = color;
+ d += 2;
+ }
+ break;
+ case 4:
+ for (x = posx1; x <= posx2; x++) {
+ *((uint32_t *)d) = color;
+ d += 4;
+ }
+ break;
+ }
+}
+
+static void draw_vertical_line(DisplaySurface *ds,
+ int posx, int posy1, int posy2,
+ uint32_t color)
+{
+ uint8_t *d;
+ int y, bpp;
+
+ bpp = (surface_bits_per_pixel(ds) + 7) >> 3;
+ d = surface_data(ds) + surface_stride(ds) * posy1 + bpp * posx;
+ switch(bpp) {
+ case 1:
+ for (y = posy1; y <= posy2; y++) {
+ *((uint8_t *)d) = color;
+ d += surface_stride(ds);
+ }
+ break;
+ case 2:
+ for (y = posy1; y <= posy2; y++) {
+ *((uint16_t *)d) = color;
+ d += surface_stride(ds);
+ }
+ break;
+ case 4:
+ for (y = posy1; y <= posy2; y++) {
+ *((uint32_t *)d) = color;
+ d += surface_stride(ds);
+ }
+ break;
+ }
+}
+
+static void jazz_led_update_display(void *opaque)
+{
+ LedState *s = opaque;
+ DisplaySurface *surface = qemu_console_surface(s->con);
+ uint8_t *d1;
+ uint32_t color_segment, color_led;
+ int y, bpp;
+
+ if (s->state & REDRAW_BACKGROUND) {
+ /* clear screen */
+ bpp = (surface_bits_per_pixel(surface) + 7) >> 3;
+ d1 = surface_data(surface);
+ for (y = 0; y < surface_height(surface); y++) {
+ memset(d1, 0x00, surface_width(surface) * bpp);
+ d1 += surface_stride(surface);
+ }
+ }
+
+ if (s->state & REDRAW_SEGMENTS) {
+ /* set colors according to bpp */
+ switch (surface_bits_per_pixel(surface)) {
+ case 8:
+ color_segment = rgb_to_pixel8(0xaa, 0xaa, 0xaa);
+ color_led = rgb_to_pixel8(0x00, 0xff, 0x00);
+ break;
+ case 15:
+ color_segment = rgb_to_pixel15(0xaa, 0xaa, 0xaa);
+ color_led = rgb_to_pixel15(0x00, 0xff, 0x00);
+ break;
+ case 16:
+ color_segment = rgb_to_pixel16(0xaa, 0xaa, 0xaa);
+ color_led = rgb_to_pixel16(0x00, 0xff, 0x00);
+ case 24:
+ color_segment = rgb_to_pixel24(0xaa, 0xaa, 0xaa);
+ color_led = rgb_to_pixel24(0x00, 0xff, 0x00);
+ break;
+ case 32:
+ color_segment = rgb_to_pixel32(0xaa, 0xaa, 0xaa);
+ color_led = rgb_to_pixel32(0x00, 0xff, 0x00);
+ break;
+ default:
+ return;
+ }
+
+ /* display segments */
+ draw_horizontal_line(surface, 40, 10, 40,
+ (s->segments & 0x02) ? color_segment : 0);
+ draw_vertical_line(surface, 10, 10, 40,
+ (s->segments & 0x04) ? color_segment : 0);
+ draw_vertical_line(surface, 10, 40, 70,
+ (s->segments & 0x08) ? color_segment : 0);
+ draw_horizontal_line(surface, 70, 10, 40,
+ (s->segments & 0x10) ? color_segment : 0);
+ draw_vertical_line(surface, 40, 40, 70,
+ (s->segments & 0x20) ? color_segment : 0);
+ draw_vertical_line(surface, 40, 10, 40,
+ (s->segments & 0x40) ? color_segment : 0);
+ draw_horizontal_line(surface, 10, 10, 40,
+ (s->segments & 0x80) ? color_segment : 0);
+
+ /* display led */
+ if (!(s->segments & 0x01))
+ color_led = 0; /* black */
+ draw_horizontal_line(surface, 68, 50, 50, color_led);
+ draw_horizontal_line(surface, 69, 49, 51, color_led);
+ draw_horizontal_line(surface, 70, 48, 52, color_led);
+ draw_horizontal_line(surface, 71, 49, 51, color_led);
+ draw_horizontal_line(surface, 72, 50, 50, color_led);
+ }
+
+ s->state = REDRAW_NONE;
+ dpy_gfx_update(s->con, 0, 0,
+ surface_width(surface), surface_height(surface));
+}
+
+static void jazz_led_invalidate_display(void *opaque)
+{
+ LedState *s = opaque;
+ s->state |= REDRAW_SEGMENTS | REDRAW_BACKGROUND;
+}
+
+static void jazz_led_text_update(void *opaque, console_ch_t *chardata)
+{
+ LedState *s = opaque;
+ char buf[2];
+
+ dpy_text_cursor(s->con, -1, -1);
+ qemu_console_resize(s->con, 2, 1);
+
+ /* TODO: draw the segments */
+ snprintf(buf, 2, "%02hhx\n", s->segments);
+ console_write_ch(chardata++, 0x00200100 | buf[0]);
+ console_write_ch(chardata++, 0x00200100 | buf[1]);
+
+ dpy_text_update(s->con, 0, 0, 2, 1);
+}
+
+static int jazz_led_post_load(void *opaque, int version_id)
+{
+ /* force refresh */
+ jazz_led_invalidate_display(opaque);
+
+ return 0;
+}
+
+static const VMStateDescription vmstate_jazz_led = {
+ .name = "jazz-led",
+ .version_id = 0,
+ .minimum_version_id = 0,
+ .minimum_version_id_old = 0,
+ .post_load = jazz_led_post_load,
+ .fields = (VMStateField[]) {
+ VMSTATE_UINT8(segments, LedState),
+ VMSTATE_END_OF_LIST()
+ }
+};
+
+static int jazz_led_init(SysBusDevice *dev)
+{
+ LedState *s = FROM_SYSBUS(LedState, dev);
+
+ memory_region_init_io(&s->iomem, &led_ops, s, "led", 1);
+ sysbus_init_mmio(dev, &s->iomem);
+
+ s->con = graphic_console_init(jazz_led_update_display,
+ jazz_led_invalidate_display,
+ NULL,
+ jazz_led_text_update, s);
+
+ return 0;
+}
+
+static void jazz_led_reset(DeviceState *d)
+{
+ LedState *s = DO_UPCAST(LedState, busdev.qdev, d);
+
+ s->segments = 0;
+ s->state = REDRAW_SEGMENTS | REDRAW_BACKGROUND;
+ qemu_console_resize(s->con, 60, 80);
+}
+
+static void jazz_led_class_init(ObjectClass *klass, void *data)
+{
+ DeviceClass *dc = DEVICE_CLASS(klass);
+ SysBusDeviceClass *k = SYS_BUS_DEVICE_CLASS(klass);
+
+ k->init = jazz_led_init;
+ dc->desc = "Jazz LED display",
+ dc->vmsd = &vmstate_jazz_led;
+ dc->reset = jazz_led_reset;
+}
+
+static const TypeInfo jazz_led_info = {
+ .name = "jazz-led",
+ .parent = TYPE_SYS_BUS_DEVICE,
+ .instance_size = sizeof(LedState),
+ .class_init = jazz_led_class_init,
+};
+
+static void jazz_led_register(void)
+{
+ type_register_static(&jazz_led_info);
+}
+
+type_init(jazz_led_register);
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