Merge branch 'master' of git://git.denx.de/u-boot-video

board/raspberrypi/rpi_b/rpi_b.c

 /*
- * (C) Copyright 2012 Stephen Warren
+ * (C) Copyright 2012-2013 Stephen Warren
  *
  * See file CREDITS for list of people who contributed to this
  * project.
@@ -15,6 +15,8 @@
  */
 
 #include <common.h>
+#include <config.h>
+#include <lcd.h>
 #include <asm/arch/mbox.h>
 #include <asm/arch/sdhci.h>
 #include <asm/global_data.h>
@@ -77,3 +79,13 @@ int board_mmc_init(void)
 	return bcm2835_sdhci_init(BCM2835_SDHCI_BASE,
 				  msg_clk->get_clock_rate.body.resp.rate_hz);
 }
+
+void ft_board_setup(void *blob, bd_t *bd)
+{
+	/*
+	 * For now, we simply always add the simplefb DT node. Later, we
+	 * should be more intelligent, and e.g. only do this if no enabled DT
+	 * node exists for the "real" graphics driver.
+	 */
+	lcd_dt_simplefb_add_node(blob);
+}

common/lcd.c

@@ -57,6 +57,10 @@
 #include <atmel_lcdc.h>
 #endif
 
+#if defined(CONFIG_LCD_DT_SIMPLEFB)
+#include <libfdt.h>
+#endif
+
 /************************************************************************/
 /* ** FONT DATA								*/
 /************************************************************************/
@@ -1182,3 +1186,86 @@ int lcd_get_screen_columns(void)
 {
 	return CONSOLE_COLS;
 }
+
+#if defined(CONFIG_LCD_DT_SIMPLEFB)
+static int lcd_dt_simplefb_configure_node(void *blob, int off)
+{
+	u32 stride;
+	fdt32_t cells[2];
+	int ret;
+	const char format[] =
+#if LCD_BPP == LCD_COLOR16
+		"r5g6b5";
+#else
+		"";
+#endif
+
+	if (!format[0])
+		return -1;
+
+	stride = panel_info.vl_col * 2;
+
+	cells[0] = cpu_to_fdt32(gd->fb_base);
+	cells[1] = cpu_to_fdt32(stride * panel_info.vl_row);
+	ret = fdt_setprop(blob, off, "reg", cells, sizeof(cells[0]) * 2);
+	if (ret < 0)
+		return -1;
+
+	cells[0] = cpu_to_fdt32(panel_info.vl_col);
+	ret = fdt_setprop(blob, off, "width", cells, sizeof(cells[0]));
+	if (ret < 0)
+		return -1;
+
+	cells[0] = cpu_to_fdt32(panel_info.vl_row);
+	ret = fdt_setprop(blob, off, "height", cells, sizeof(cells[0]));
+	if (ret < 0)
+		return -1;
+
+	cells[0] = cpu_to_fdt32(stride);
+	ret = fdt_setprop(blob, off, "stride", cells, sizeof(cells[0]));
+	if (ret < 0)
+		return -1;
+
+	ret = fdt_setprop(blob, off, "format", format, strlen(format) + 1);
+	if (ret < 0)
+		return -1;
+
+	ret = fdt_delprop(blob, off, "status");
+	if (ret < 0)
+		return -1;
+
+	return 0;
+}
+
+int lcd_dt_simplefb_add_node(void *blob)
+{
+	const char compat[] = "simple-framebuffer";
+	const char disabled[] = "disabled";
+	int off, ret;
+
+	off = fdt_add_subnode(blob, 0, "framebuffer");
+	if (off < 0)
+		return -1;
+
+	ret = fdt_setprop(blob, off, "status", disabled, sizeof(disabled));
+	if (ret < 0)
+		return -1;
+
+	ret = fdt_setprop(blob, off, "compatible", compat, sizeof(compat));
+	if (ret < 0)
+		return -1;
+
+	return lcd_dt_simplefb_configure_node(blob, off);
+}
+
+int lcd_dt_simplefb_enable_existing_node(void *blob)
+{
+	int off;
+
+	off = fdt_node_offset_by_compatible(blob, -1, "simple-framebuffer");
+	if (off < 0)
+		return -1;
+
+	return lcd_dt_simplefb_configure_node(blob, off);
+}
+#endif

doc/device-tree-bindings/video/simple-framebuffer.txt

+Simple Framebuffer
+
+A simple frame-buffer describes a raw memory region that may be rendered to,
+with the assumption that the display hardware has already been set up to scan
+out from that buffer.
+
+Required properties:
+- compatible: "simple-framebuffer"
+- reg: Should contain the location and size of the framebuffer memory.
+- width: The width of the framebuffer in pixels.
+- height: The height of the framebuffer in pixels.
+- stride: The number of bytes in each line of the framebuffer.
+- format: The format of the framebuffer surface. Valid values are:
+  - r5g6b5 (16-bit pixels, d[15:11]=r, d[10:5]=g, d[4:0]=b).
+
+Example:
+
+	framebuffer {
+		compatible = "simple-framebuffer";
+		reg = <0x1d385000 (1600 * 1200 * 2)>;
+		width = <1600>;
+		height = <1200>;
+		stride = <(1600 * 2)>;
+		format = "r5g6b5";
+	};

drivers/video/cfb_console.c

@@ -572,8 +572,6 @@ static void video_drawchars(int xx, int yy, unsigned char *s, int count)
 					SWAP32((video_font_draw_table32
 						[bits & 15][3] & eorx) ^ bgx);
 			}
-			if (cfb_do_flush_cache)
-				flush_cache((ulong)dest0, 32);
 			dest0 += VIDEO_FONT_WIDTH * VIDEO_PIXEL_SIZE;
 			s++;
 		}
@@ -642,8 +640,6 @@ static void video_invertchar(int xx, int yy)
 		for (x = firstx; x < lastx; x++) {
 			u8 *dest = (u8 *)(video_fb_address) + x + y;
 			*dest = ~*dest;
-			if (cfb_do_flush_cache)
-				flush_cache((ulong)dest, 4);
 		}
 	}
 }
@@ -687,6 +683,8 @@ void console_cursor(int state)
 		}
 		cursor_state = state;
 	}
+	if (cfb_do_flush_cache)
+		flush_cache(VIDEO_FB_ADRS, VIDEO_SIZE);
 }
 #endif
 
@@ -739,8 +737,6 @@ static void console_clear_line(int line, int begin, int end)
 			memsetl(offset + i * VIDEO_LINE_LEN, size, bgx);
 	}
 #endif
-	if (cfb_do_flush_cache)
-		flush_cache((ulong)CONSOLE_ROW_FIRST, CONSOLE_SIZE);
 }
 
 static void console_scrollup(void)
@@ -1146,6 +1142,8 @@ void video_putc(const char c)
 #else
 	parse_putc(c);
 #endif
+	if (cfb_do_flush_cache)
+		flush_cache(VIDEO_FB_ADRS, VIDEO_SIZE);
 }
 
 void video_puts(const char *s)
@@ -1799,6 +1797,8 @@ int video_display_bitmap(ulong bmp_image, int x, int y)
 	}
 #endif
 
+	if (cfb_do_flush_cache)
+		flush_cache(VIDEO_FB_ADRS, VIDEO_SIZE);
 	return (0);
 }
 #endif
@@ -2209,6 +2209,9 @@ static int video_init(void)
 	console_col = 0;
 	console_row = 0;
 
+	if (cfb_do_flush_cache)
+		flush_cache(VIDEO_FB_ADRS, VIDEO_SIZE);
+
 	return 0;
 }
 

include/configs/rpi_b.h

@@ -61,6 +61,7 @@
 #define CONFIG_BCM2835_GPIO
 /* LCD */
 #define CONFIG_LCD
+#define CONFIG_LCD_DT_SIMPLEFB
 #define LCD_BPP				LCD_COLOR16
 /*
  * Prevent allocation of RAM for FB; the real FB address is queried
@@ -175,6 +176,7 @@
 
 /* Device tree support for bootm/bootz */
 #define CONFIG_OF_LIBFDT
+#define CONFIG_OF_BOARD_SETUP
 /* ATAGs support for bootm/bootz */
 #define CONFIG_SETUP_MEMORY_TAGS
 #define CONFIG_CMDLINE_TAG

include/lcd.h

@@ -324,6 +324,9 @@ void lcd_show_board_info(void);
 /* Return the size of the LCD frame buffer, and the line length */
 int lcd_get_size(int *line_length);
 
+int lcd_dt_simplefb_add_node(void *blob);
+int lcd_dt_simplefb_enable_existing_node(void *blob);
+
 /************************************************************************/
 /* ** BITMAP DISPLAY SUPPORT						*/
 /************************************************************************/