80 lines
1.8 KiB
C
80 lines
1.8 KiB
C
/*
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* Copyright (c) 2013 Google, Inc
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*
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* SPDX-License-Identifier: GPL-2.0+
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*/
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#include <common.h>
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#include <fdtdec.h>
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#include <lcd.h>
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#include <malloc.h>
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#include <asm/sdl.h>
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#include <asm/u-boot-sandbox.h>
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DECLARE_GLOBAL_DATA_PTR;
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enum {
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/* Maximum LCD size we support */
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LCD_MAX_WIDTH = 1366,
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LCD_MAX_HEIGHT = 768,
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LCD_MAX_LOG2_BPP = 4, /* 2^4 = 16 bpp */
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};
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vidinfo_t panel_info;
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void lcd_setcolreg(ushort regno, ushort red, ushort green, ushort blue)
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{
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}
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void lcd_ctrl_init(void *lcdbase)
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{
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/*
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* Allocate memory to keep BMP color conversion map. This is required
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* for 8 bit BMPs only (hence 256 colors). If malloc fails - keep
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* going, it is not even clear if displyaing the bitmap will be
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* required on the way up.
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*/
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panel_info.cmap = malloc(256 * NBITS(panel_info.vl_bpix) / 8);
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}
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void lcd_enable(void)
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{
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if (sandbox_sdl_init_display(panel_info.vl_col, panel_info.vl_row,
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panel_info.vl_bpix))
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puts("LCD init failed\n");
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}
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int sandbox_lcd_sdl_early_init(void)
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{
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const void *blob = gd->fdt_blob;
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int xres = LCD_MAX_WIDTH, yres = LCD_MAX_HEIGHT;
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int node;
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int ret = 0;
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/*
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* The code in common/lcd.c does not cope with not being able to
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* set up a frame buffer. It will just happily keep writing to
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* invalid memory. So here we make sure that at least some buffer
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* is available even if it actually won't be displayed.
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*/
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node = fdtdec_next_compatible(blob, 0, COMPAT_SANDBOX_LCD_SDL);
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if (node >= 0) {
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xres = fdtdec_get_int(blob, node, "xres", LCD_MAX_WIDTH);
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yres = fdtdec_get_int(blob, node, "yres", LCD_MAX_HEIGHT);
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if (xres < 0 || xres > LCD_MAX_WIDTH) {
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xres = LCD_MAX_WIDTH;
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ret = -EINVAL;
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}
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if (yres < 0 || yres > LCD_MAX_HEIGHT) {
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yres = LCD_MAX_HEIGHT;
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ret = -EINVAL;
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}
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}
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panel_info.vl_col = xres;
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panel_info.vl_row = yres;
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panel_info.vl_bpix = LCD_COLOR16;
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return ret;
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}
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