Signed-off-by: BALATON Zoltan <bala...@eik.bme.hu>
Reviewed-by: Peter Maydell <peter.mayd...@linaro.org>
---
v2: Split off renaming a variable to separate clean up patch
hw/display/sm501.c | 63 +++++++++++++++++++++++++++---------------------------
1 file changed, 32 insertions(+), 31 deletions(-)
diff --git a/hw/display/sm501.c b/hw/display/sm501.c
index 2385f59..8abac8f 100644
--- a/hw/display/sm501.c
+++ b/hw/display/sm501.c
@@ -2,6 +2,7 @@
* QEMU SM501 Device
*
* Copyright (c) 2008 Shin-ichiro KAWASAKI
+ * Copyright (c) 2016 BALATON Zoltan
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to
deal
@@ -42,8 +43,11 @@
* - Minimum implementation for Linux console : mmio regs and CRT layer.
* - 2D graphics acceleration partially supported : only fill rectangle.
*
- * TODO:
+ * Status: 2016/12/04
+ * - Misc fixes: endianness, hardware cursor
* - Panel support
+ *
+ * TODO:
* - Touch panel support
* - USB support
* - UART support
@@ -1301,18 +1305,16 @@ static inline int get_depth_index(DisplaySurface
*surface)
}
}
-static void sm501_draw_crt(SM501State *s)
+static void sm501_update_display(void *opaque)
{
+ SM501State *s = (SM501State *)opaque;
DisplaySurface *surface = qemu_console_surface(s->con);
int y, c_x, c_y;
- uint8_t *hwc_src, *src = s->local_mem;
- int width = get_width(s, 1);
- int height = get_height(s, 1);
- int src_bpp = get_bpp(s, 1);
+ int crt = (s->dc_crt_control & SM501_DC_CRT_CONTROL_SEL) ? 1 : 0;
+ int width = get_width(s, crt);
+ int height = get_height(s, crt);
+ int src_bpp = get_bpp(s, crt);
int dst_bpp = surface_bytes_per_pixel(surface);
- uint32_t *palette = (uint32_t *)&s->dc_palette[SM501_DC_CRT_PALETTE -
- SM501_DC_PANEL_PALETTE];
- uint8_t hwc_palette[3 * 3];
int dst_depth_index = get_depth_index(surface);
draw_line_func *draw_line = NULL;
draw_hwc_line_func *draw_hwc_line = NULL;
@@ -1320,7 +1322,19 @@ static void sm501_draw_crt(SM501State *s)
int y_start = -1;
ram_addr_t page_min = ~0l;
ram_addr_t page_max = 0l;
- ram_addr_t offset = 0;
+ ram_addr_t offset;
+ uint32_t *palette;
+ uint8_t hwc_palette[3 * 3];
+ uint8_t *hwc_src;
+
+ if (!((crt ? s->dc_crt_control : s->dc_panel_control)
+ & SM501_DC_CRT_CONTROL_ENABLE)) {
+ return;
+ }
+
+ palette = (uint32_t *)(crt ? &s->dc_palette[SM501_DC_CRT_PALETTE -
+ SM501_DC_PANEL_PALETTE]
+ : &s->dc_palette[0]);
/* choose draw_line function */
switch (src_bpp) {
@@ -1334,20 +1348,19 @@ static void sm501_draw_crt(SM501State *s)
draw_line = draw_line32_funcs[dst_depth_index];
break;
default:
- printf("sm501 draw crt : invalid DC_CRT_CONTROL=%x.\n",
- s->dc_crt_control);
+ printf("sm501 update display : invalid control register value.\n");
abort();
break;
}
/* set up to draw hardware cursor */
- if (is_hwc_enabled(s, 1)) {
+ if (is_hwc_enabled(s, crt)) {
/* choose cursor draw line function */
draw_hwc_line = draw_hwc_line_funcs[dst_depth_index];
- hwc_src = get_hwc_address(s, 1);
- c_x = get_hwc_x(s, 1);
- c_y = get_hwc_y(s, 1);
- get_hwc_palette(s, 1, hwc_palette);
+ hwc_src = get_hwc_address(s, crt);
+ c_x = get_hwc_x(s, crt);
+ c_y = get_hwc_y(s, crt);
+ get_hwc_palette(s, crt, hwc_palette);
}
/* adjust console size */
@@ -1361,7 +1374,7 @@ static void sm501_draw_crt(SM501State *s)
/* draw each line according to conditions */
memory_region_sync_dirty_bitmap(&s->local_mem_region);
- for (y = 0; y < height; y++) {
+ for (y = 0, offset = 0; y < height; y++, offset += width * src_bpp) {
int update, update_hwc;
ram_addr_t page0 = offset;
ram_addr_t page1 = offset + width * src_bpp - 1;
@@ -1379,7 +1392,7 @@ static void sm501_draw_crt(SM501State *s)
d += y * width * dst_bpp;
/* draw graphics layer */
- draw_line(d, src, width, palette);
+ draw_line(d, s->local_mem + offset, width, palette);
/* draw hardware cursor */
if (update_hwc) {
@@ -1402,9 +1415,6 @@ static void sm501_draw_crt(SM501State *s)
y_start = -1;
}
}
-
- src += width * src_bpp;
- offset += width * src_bpp;
}
/* complete flush to display */
@@ -1420,15 +1430,6 @@ static void sm501_draw_crt(SM501State *s)
}
}
-static void sm501_update_display(void *opaque)
-{
- SM501State *s = (SM501State *)opaque;
-
- if (s->dc_crt_control & SM501_DC_CRT_CONTROL_ENABLE) {
- sm501_draw_crt(s);
- }
-}
-
static const GraphicHwOps sm501_ops = {
.gfx_update = sm501_update_display,
};
--
2.7.4
