projects / people / ms / u-boot.git / blame
| Commit | Line | Data |
|---|---|---|
| 033167c4 NK |
1 | /* |
| 2 | * Simplefb device tree support | |
| 3 | * | |
| 4 | * (C) Copyright 2015 | |
| 5 | * Stephen Warren <swarren@wwwdotorg.org> | |
| 6 | * | |
| 7 | * SPDX-License-Identifier: GPL-2.0+ | |
| 8 | */ | |
| 9 | ||
| 10 | #include <common.h> | |
| d08e42a8 | 11 | #include <dm.h> |
| 033167c4 NK |
12 | #include <lcd.h> |
| 13 | #include <fdt_support.h> | |
| 14 | #include <libfdt.h> | |
| d08e42a8 | 15 | #include <video.h> |
| 033167c4 NK |
16 | |
| 17 | DECLARE_GLOBAL_DATA_PTR; | |
| 18 | ||
| 19 | static int lcd_dt_simplefb_configure_node(void *blob, int off) | |
| 20 | { | |
| 45261455 SG |
21 | int xsize, ysize; |
| 22 | int bpix; /* log2 of bits per pixel */ | |
| 23 | const char *name; | |
| 24 | ulong fb_base; | |
| d08e42a8 SG |
25 | #ifdef CONFIG_DM_VIDEO |
| 26 | struct video_uc_platdata *plat; | |
| 27 | struct video_priv *uc_priv; | |
| 28 | struct udevice *dev; | |
| 29 | int ret; | |
| 45261455 | 30 | |
| d08e42a8 SG |
31 | ret = uclass_first_device_err(UCLASS_VIDEO, &dev); |
| 32 | if (ret) | |
| 33 | return ret; | |
| 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; | |
| 38 | bpix = uc_priv->bpix; | |
| 39 | fb_base = plat->base; | |
| 40 | #else | |
| 45261455 SG |
41 | xsize = lcd_get_pixel_width(); |
| 42 | ysize = lcd_get_pixel_height(); | |
| 43 | bpix = LCD_BPP; | |
| 44 | fb_base = gd->fb_base; | |
| d08e42a8 | 45 | #endif |
| 45261455 SG |
46 | switch (bpix) { |
| 47 | case 4: /* VIDEO_BPP16 */ | |
| 48 | name = "r5g6b5"; | |
| 49 | break; | |
| 50 | case 5: /* VIDEO_BPP32 */ | |
| 51 | name = "a8r8g8b8"; | |
| 52 | break; | |
| 53 | default: | |
| 54 | return -EINVAL; | |
| 55 | } | |
| 56 | ||
| 57 | return fdt_setup_simplefb_node(blob, off, fb_base, xsize, ysize, | |
| 58 | xsize * (1 << bpix) / 8, name); | |
| 033167c4 NK |
59 | } |
| 60 | ||
| 61 | int lcd_dt_simplefb_add_node(void *blob) | |
| 62 | { | |
| 63 | static const char compat[] = "simple-framebuffer"; | |
| 64 | static const char disabled[] = "disabled"; | |
| 65 | int off, ret; | |
| 66 | ||
| 67 | off = fdt_add_subnode(blob, 0, "framebuffer"); | |
| 68 | if (off < 0) | |
| 69 | return -1; | |
| 70 | ||
| 71 | ret = fdt_setprop(blob, off, "status", disabled, sizeof(disabled)); | |
| 72 | if (ret < 0) | |
| 73 | return -1; | |
| 74 | ||
| 75 | ret = fdt_setprop(blob, off, "compatible", compat, sizeof(compat)); | |
| 76 | if (ret < 0) | |
| 77 | return -1; | |
| 78 | ||
| 79 | return lcd_dt_simplefb_configure_node(blob, off); | |
| 80 | } | |
| 81 | ||
| 82 | int lcd_dt_simplefb_enable_existing_node(void *blob) | |
| 83 | { | |
| 84 | int off; | |
| 85 | ||
| 86 | off = fdt_node_offset_by_compatible(blob, -1, "simple-framebuffer"); | |
| 87 | if (off < 0) | |
| 88 | return -1; | |
| 89 | ||
| 90 | return lcd_dt_simplefb_configure_node(blob, off); | |
| 91 | } |