summaryrefslogtreecommitdiff
path: root/common/lcd_simplefb.c
diff options
context:
space:
mode:
authorNikita Kiryanov <nikita@compulab.co.il>2015-02-03 13:32:31 +0200
committerAnatolij Gustschin <agust@denx.de>2015-02-10 13:31:26 +0100
commit033167c4c5a9a31768f690353ce26be021ad9c36 (patch)
tree7d0db9262a447cf9fe137385dad1631bf8867cae /common/lcd_simplefb.c
parentbf21a5deb9614898b1f9f12292950ee55f72bedf (diff)
lcd: dt: extract simplefb support
We now have api functions that can support compiling simplefb code as its own module. Since this code is not part of the display functionality, extract it to its own file. Raspberry Pi is updated to accommodate the changes. Signed-off-by: Nikita Kiryanov <nikita@compulab.co.il> Acked-by: Stephen Warren <swarren@wwwdotorg.org> Reviewed-by: Simon Glass <sjg@chromium.org> Tested-by: Bo Shen <voice.shen@atmel.com> Tested-by: Josh Wu <josh.wu@atmel.com> Cc: Simon Glass <sjg@chromium.org> Cc: Anatolij Gustschin <agust@denx.de> Cc: Stephen Warren <swarren@wwwdotorg.org>
Diffstat (limited to 'common/lcd_simplefb.c')
-rw-r--r--common/lcd_simplefb.c59
1 files changed, 59 insertions, 0 deletions
diff --git a/common/lcd_simplefb.c b/common/lcd_simplefb.c
new file mode 100644
index 00000000000..8db2adde016
--- /dev/null
+++ b/common/lcd_simplefb.c
@@ -0,0 +1,59 @@
+/*
+ * Simplefb device tree support
+ *
+ * (C) Copyright 2015
+ * Stephen Warren <swarren@wwwdotorg.org>
+ *
+ * SPDX-License-Identifier: GPL-2.0+
+ */
+
+#include <common.h>
+#include <lcd.h>
+#include <fdt_support.h>
+#include <libfdt.h>
+
+DECLARE_GLOBAL_DATA_PTR;
+
+static int lcd_dt_simplefb_configure_node(void *blob, int off)
+{
+#if LCD_BPP == LCD_COLOR16
+ int vl_col = lcd_get_pixel_width();
+ int vl_row = lcd_get_pixel_height();
+ return fdt_setup_simplefb_node(blob, off, gd->fb_base, vl_col, vl_row,
+ vl_col * 2, "r5g6b5");
+#else
+ return -1;
+#endif
+}
+
+int lcd_dt_simplefb_add_node(void *blob)
+{
+ static const char compat[] = "simple-framebuffer";
+ static 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);
+}