2 * Simplefb device tree support
5 * Stephen Warren <swarren@wwwdotorg.org>
7 * SPDX-License-Identifier: GPL-2.0+
13 #include <fdt_support.h>
17 DECLARE_GLOBAL_DATA_PTR;
19 static int lcd_dt_simplefb_configure_node(void *blob, int off)
22 int bpix; /* log2 of bits per pixel */
25 #ifdef CONFIG_DM_VIDEO
26 struct video_uc_platdata *plat;
27 struct video_priv *uc_priv;
31 ret = uclass_first_device_err(UCLASS_VIDEO, &dev);
34 uc_priv = dev_get_uclass_priv(dev);
35 plat = dev_get_uclass_platdata(dev);
36 xsize = uc_priv->xsize;
37 ysize = uc_priv->ysize;
41 xsize = lcd_get_pixel_width();
42 ysize = lcd_get_pixel_height();
44 fb_base = gd->fb_base;
47 case 4: /* VIDEO_BPP16 */
50 case 5: /* VIDEO_BPP32 */
57 return fdt_setup_simplefb_node(blob, off, fb_base, xsize, ysize,
58 xsize * (1 << bpix) / 8, name);
61 int lcd_dt_simplefb_add_node(void *blob)
63 static const char compat[] = "simple-framebuffer";
64 static const char disabled[] = "disabled";
67 off = fdt_add_subnode(blob, 0, "framebuffer");
71 ret = fdt_setprop(blob, off, "status", disabled, sizeof(disabled));
75 ret = fdt_setprop(blob, off, "compatible", compat, sizeof(compat));
79 return lcd_dt_simplefb_configure_node(blob, off);
82 int lcd_dt_simplefb_enable_existing_node(void *blob)
86 off = fdt_node_offset_by_compatible(blob, -1, "simple-framebuffer");
90 return lcd_dt_simplefb_configure_node(blob, off);