lcd-24bit: Introduce a 24-bit mid-level LCD driver

With LCD driver all calculation will be performed on RGB888 and the hardware/OS
can display from our 24bit framebuffer.

It is not yet as performance optimized as the existing drivers but should be
good enough.The vast number of small changes is due to the fact that
fb_data can be a struct type now, while most of the code expected a scalar type.

lcd-as-memframe ASM code does not work with 24bit currently so the with 24bit
it enforces the generic C code.

All plugins are ported over. Except for rockpaint. It uses so much memory that
it wouldnt fit into the 512k plugin buffer anymore (patches welcome).

Change-Id: Ibb1964545028ce0d8ff9833ccc3ab66be3ee0754

1 files changed, 14 insertions, 0 deletions

diff --git a/firmware/screendump.c b/firmware/screendump.c
index 28c37610af..2916cc1c9f 100644
--- a/firmware/screendump.c
+++ b/firmware/screendump.c
@@ -118,6 +118,9 @@ void screen_dump(void)
 #elif LCD_DEPTH <= 16
     unsigned short *dst, *dst_end;
     unsigned short linebuf[DUMP_BMP_LINESIZE/2];
+#else /* 24bit */
+    unsigned char *dst, *dst_end;
+    unsigned char linebuf[DUMP_BMP_LINESIZE * 3];
 #endif
 
 #if CONFIG_RTC
@@ -227,6 +230,17 @@ void screen_dump(void)
 #endif
             }
             while (dst < dst_end);
+#elif LCD_DEPTH == 24
+            dst_end = dst + LCD_WIDTH*3;
+            src = FBADDR(0, y);
+            do
+            {
+                *dst++ = src->b;
+                *dst++ = src->g;
+                *dst++ = src->r;
+                ++src;
+            }
+            while (dst < dst_end);
 
 #endif /* LCD_DEPTH */
             write(fd, linebuf, DUMP_BMP_LINESIZE);