This allows drivers to draw the pixel, and handle tiling, or specific
color formats.
Signed-off-by: Jocelyn Falempe <jfalempe@xxxxxxxxxx>
---
drivers/gpu/drm/drm_panic.c | 120 +++++++++++++++++++++++-------------
include/drm/drm_panic.h | 9 +++
2 files changed, 85 insertions(+), 44 deletions(-)
diff --git a/drivers/gpu/drm/drm_panic.c b/drivers/gpu/drm/drm_panic.c
index 09d7d45f80c2..94558087bba3 100644
--- a/drivers/gpu/drm/drm_panic.c
+++ b/drivers/gpu/drm/drm_panic.c
@@ -251,40 +251,54 @@ static void drm_panic_blit32(struct iosys_map *dmap, unsigned int dpitch,
iosys_map_wr(dmap, y * dpitch + x * sizeof(u32), u32, color);
}
+static void drm_panic_blit_pixel(struct drm_scanout_buffer *sb, struct drm_rect *clip,
+ const u8 *sbuf8, unsigned int spitch, u32 color)
+{
+ unsigned int y, x;
+
+ for (y = 0; y < drm_rect_height(clip); y++)
+ for (x = 0; x < drm_rect_width(clip); x++)
+ if (sbuf8[(y * spitch) + x / 8] & (0x80 >> (x % 8)))
+ sb->set_pixel(sb, clip->x1 + x, clip->y1 + y, color);
+}
+
/*
* drm_panic_blit - convert a monochrome image to a linear framebuffer
- * @dmap: destination iosys_map
- * @dpitch: destination pitch in bytes
+ * @sb: destination scanout buffer
+ * @clip: destination rectangle
* @sbuf8: source buffer, in monochrome format, 8 pixels per byte.
* @spitch: source pitch in bytes
- * @height: height of the image to copy, in pixels
- * @width: width of the image to copy, in pixels
* @color: foreground color, in destination format
- * @pixel_width: pixel width in bytes.
*
* This can be used to draw a font character, which is a monochrome image, to a
* framebuffer in other supported format.
*/
-static void drm_panic_blit(struct iosys_map *dmap, unsigned int dpitch,
- const u8 *sbuf8, unsigned int spitch,
- unsigned int height, unsigned int width,
- u32 color, unsigned int pixel_width)
+static void drm_panic_blit(struct drm_scanout_buffer *sb, struct drm_rect *clip,
+ const u8 *sbuf8, unsigned int spitch, u32 color)
{
- switch (pixel_width) {
+ struct iosys_map map;
+
+ if (sb->set_pixel)
+ return drm_panic_blit_pixel(sb, clip, sbuf8, spitch, color);
+
+ map = sb->map[0];
+ iosys_map_incr(&map, clip->y1 * sb->pitch[0] + clip->x1 * sb->format->cpp[0]);
+
+ switch (sb->format->cpp[0]) {
case 2:
- drm_panic_blit16(dmap, dpitch, sbuf8, spitch,
- height, width, color);
+ drm_panic_blit16(&map, sb->pitch[0], sbuf8, spitch,
+ drm_rect_height(clip), drm_rect_width(clip), color);
break;
case 3:
- drm_panic_blit24(dmap, dpitch, sbuf8, spitch,
- height, width, color);
+ drm_panic_blit24(&map, sb->pitch[0], sbuf8, spitch,
+ drm_rect_height(clip), drm_rect_width(clip), color);
break;
case 4:
- drm_panic_blit32(dmap, dpitch, sbuf8, spitch,
- height, width, color);
+ drm_panic_blit32(&map, sb->pitch[0], sbuf8, spitch,
+ drm_rect_height(clip), drm_rect_width(clip), color);
break;
default:
- WARN_ONCE(1, "Can't blit with pixel width %d\n", pixel_width);
+ WARN_ONCE(1, "Can't blit with pixel width %d\n", sb->format->cpp[0]);
}
}
@@ -328,33 +342,51 @@ static void drm_panic_fill32(struct iosys_map *dmap, unsigned int dpitch,
iosys_map_wr(dmap, y * dpitch + x * sizeof(u32), u32, color);
}
+static void drm_panic_fill_pixel(struct drm_scanout_buffer *sb,
+ struct drm_rect *clip,
+ u32 color)
+{
+ unsigned int y, x;
+
+ for (y = 0; y < drm_rect_height(clip); y++)
+ for (x = 0; x < drm_rect_width(clip); x++)
+ sb->set_pixel(sb, clip->x1 + x, clip->y1 + y, color);
+}
+
/*
* drm_panic_fill - Fill a rectangle with a color
- * @dmap: destination iosys_map, pointing to the top left corner of the rectangle
- * @dpitch: destination pitch in bytes
- * @height: height of the rectangle, in pixels
- * @width: width of the rectangle, in pixels
- * @color: color to fill the rectangle.
- * @pixel_width: pixel width in bytes
+ * @sb: destination scanout buffer
+ * @clip: destination rectangle
+ * @color: foreground color, in destination format
*
* Fill a rectangle with a color, in a linear framebuffer.
*/
-static void drm_panic_fill(struct iosys_map *dmap, unsigned int dpitch,
- unsigned int height, unsigned int width,
- u32 color, unsigned int pixel_width)
+static void drm_panic_fill(struct drm_scanout_buffer *sb, struct drm_rect *clip,
+ u32 color)
{
- switch (pixel_width) {
+ struct iosys_map map;
+
+ if (sb->set_pixel)
+ return drm_panic_fill_pixel(sb, clip, color);
+
+ map = sb->map[0];
+ iosys_map_incr(&map, clip->y1 * sb->pitch[0] + clip->x1 * sb->format->cpp[0]);
+
+ switch (sb->format->cpp[0]) {
case 2:
- drm_panic_fill16(dmap, dpitch, height, width, color);
+ drm_panic_fill16(&map, sb->pitch[0], drm_rect_height(clip),
+ drm_rect_width(clip), color);
break;
case 3:
- drm_panic_fill24(dmap, dpitch, height, width, color);
+ drm_panic_fill24(&map, sb->pitch[0], drm_rect_height(clip),
+ drm_rect_width(clip), color);
break;
case 4:
- drm_panic_fill32(dmap, dpitch, height, width, color);
+ drm_panic_fill32(&map, sb->pitch[0], drm_rect_height(clip),
+ drm_rect_width(clip), color);
break;
default:
- WARN_ONCE(1, "Can't fill with pixel width %d\n", pixel_width);
+ WARN_ONCE(1, "Can't fill with pixel width %d\n", sb->format->cpp[0]);
}
}
@@ -387,25 +419,24 @@ static void draw_txt_rectangle(struct drm_scanout_buffer *sb,
int i, j;
const u8 *src;
size_t font_pitch = DIV_ROUND_UP(font->width, 8);
- struct iosys_map dst;
- unsigned int px_width = sb->format->cpp[0];
- int left = 0;
+ struct drm_rect rec;
msg_lines = min(msg_lines, drm_rect_height(clip) / font->height);
for (i = 0; i < msg_lines; i++) {
size_t line_len = min(msg[i].len, drm_rect_width(clip) / font->width);
+ rec.y1 = clip->y1 + i * font->height;
+ rec.y2 = rec.y1 + font->height;
+ rec.x1 = clip->x1;
+
if (centered)
- left = (drm_rect_width(clip) - (line_len * font->width)) / 2;
+ rec.x1 += (drm_rect_width(clip) - (line_len * font->width)) / 2;
- dst = sb->map[0];
- iosys_map_incr(&dst, (clip->y1 + i * font->height) * sb->pitch[0] +
- (clip->x1 + left) * px_width);
for (j = 0; j < line_len; j++) {
src = get_char_bitmap(font, msg[i].txt[j], font_pitch);
- drm_panic_blit(&dst, sb->pitch[0], src, font_pitch,
- font->height, font->width, color, px_width);
- iosys_map_incr(&dst, font->width * px_width);
+ rec.x2 = rec.x1 + font->width;
+ drm_panic_blit(sb, &rec, src, font_pitch, color);
+ rec.x1 += font->width;
}
}
}
@@ -420,7 +451,7 @@ static void draw_panic_static(struct drm_scanout_buffer *sb)
u32 fg_color = CONFIG_DRM_PANIC_FOREGROUND_COLOR;
u32 bg_color = CONFIG_DRM_PANIC_BACKGROUND_COLOR;
const struct font_desc *font = get_default_font(sb->width, sb->height, NULL, NULL);
- struct drm_rect r_logo, r_msg;
+ struct drm_rect r_screen, r_logo, r_msg;
if (!font)
return;
@@ -428,6 +459,8 @@ static void draw_panic_static(struct drm_scanout_buffer *sb)
fg_color = convert_from_xrgb8888(fg_color, sb->format->format);
bg_color = convert_from_xrgb8888(bg_color, sb->format->format);
+ r_screen = DRM_RECT_INIT(0, 0, sb->width, sb->height);
+
r_logo = DRM_RECT_INIT(0, 0,
get_max_line_len(logo, logo_lines) * font->width,
logo_lines * font->height);
@@ -439,8 +472,7 @@ static void draw_panic_static(struct drm_scanout_buffer *sb)
drm_rect_translate(&r_msg, (sb->width - r_msg.x2) / 2, (sb->height - r_msg.y2) / 2);
/* Fill with the background color, and draw text on top */
- drm_panic_fill(&sb->map[0], sb->pitch[0], sb->height, sb->width,
- bg_color, sb->format->cpp[0]);
+ drm_panic_fill(sb, &r_screen, bg_color);
if ((r_msg.x1 >= drm_rect_width(&r_logo) || r_msg.y1 >= drm_rect_height(&r_logo)) &&
drm_rect_width(&r_logo) < sb->width && drm_rect_height(&r_logo) < sb->height) {
diff --git a/include/drm/drm_panic.h b/include/drm/drm_panic.h
index 822dbb1aa9d6..73bb3f3d9ed9 100644
--- a/include/drm/drm_panic.h
+++ b/include/drm/drm_panic.h
@@ -50,6 +50,15 @@ struct drm_scanout_buffer {
* @pitch: Length in bytes between the start of two consecutive lines.
*/
unsigned int pitch[DRM_FORMAT_MAX_PLANES];
+
+ /**
+ * @set_pixel: Optional function, to set a pixel color on the
+ * framebuffer. It allows to handle special tiling format inside the
+ * driver.
+ */
+ void (*set_pixel)(struct drm_scanout_buffer *sb, unsigned int x,
+ unsigned int y, u32 color);
+
};
/**
--
2.45.0
