u-boot/common/lcd.c
Andreas Neubacher e32951b525 lcd: fix the color testpattern in 16bit mode
The testpattern of the lcd was only working in 8bit mode(2x3 tiles in
different colors). With this patch now 8bit and 16bit is supported.
In 16bit mode there are 2x4 tiles in different colors.
The number of LCD-colors is defined in the include/configs/<boardfile>.h

Signed-off-by: Andreas Neubacher <neubacher.andreas@gmail.com>
Signed-off-by: Anatolij Gustschin <agust@denx.de>
2016-01-24 00:38:40 +01:00

786 lines
18 KiB
C

/*
* Common LCD routines
*
* (C) Copyright 2001-2002
* Wolfgang Denk, DENX Software Engineering -- wd@denx.de
*
* SPDX-License-Identifier: GPL-2.0+
*/
/* #define DEBUG */
#include <config.h>
#include <common.h>
#include <command.h>
#include <env_callback.h>
#include <linux/types.h>
#include <stdio_dev.h>
#include <lcd.h>
#include <mapmem.h>
#include <watchdog.h>
#include <asm/unaligned.h>
#include <splash.h>
#include <asm/io.h>
#include <asm/unaligned.h>
#include <video_font.h>
#ifdef CONFIG_LCD_LOGO
#include <bmp_logo.h>
#include <bmp_logo_data.h>
#if (CONSOLE_COLOR_WHITE >= BMP_LOGO_OFFSET) && (LCD_BPP != LCD_COLOR16)
#error Default Color Map overlaps with Logo Color Map
#endif
#endif
#ifndef CONFIG_LCD_ALIGNMENT
#define CONFIG_LCD_ALIGNMENT PAGE_SIZE
#endif
#if (LCD_BPP != LCD_COLOR8) && (LCD_BPP != LCD_COLOR16) && \
(LCD_BPP != LCD_COLOR32)
#error Unsupported LCD BPP.
#endif
DECLARE_GLOBAL_DATA_PTR;
static int lcd_init(void *lcdbase);
static void lcd_logo(void);
static void lcd_setfgcolor(int color);
static void lcd_setbgcolor(int color);
static int lcd_color_fg;
static int lcd_color_bg;
int lcd_line_length;
char lcd_is_enabled = 0;
static void *lcd_base; /* Start of framebuffer memory */
static char lcd_flush_dcache; /* 1 to flush dcache after each lcd update */
/* Flush LCD activity to the caches */
void lcd_sync(void)
{
/*
* flush_dcache_range() is declared in common.h but it seems that some
* architectures do not actually implement it. Is there a way to find
* out whether it exists? For now, ARM is safe.
*/
#if defined(CONFIG_ARM) && !defined(CONFIG_SYS_DCACHE_OFF)
int line_length;
if (lcd_flush_dcache)
flush_dcache_range((u32)lcd_base,
(u32)(lcd_base + lcd_get_size(&line_length)));
#endif
}
void lcd_set_flush_dcache(int flush)
{
lcd_flush_dcache = (flush != 0);
}
static void lcd_stub_putc(struct stdio_dev *dev, const char c)
{
lcd_putc(c);
}
static void lcd_stub_puts(struct stdio_dev *dev, const char *s)
{
lcd_puts(s);
}
/* Small utility to check that you got the colours right */
#ifdef LCD_TEST_PATTERN
#if LCD_BPP == LCD_COLOR8
#define N_BLK_VERT 2
#define N_BLK_HOR 3
static int test_colors[N_BLK_HOR * N_BLK_VERT] = {
CONSOLE_COLOR_RED, CONSOLE_COLOR_GREEN, CONSOLE_COLOR_YELLOW,
CONSOLE_COLOR_BLUE, CONSOLE_COLOR_MAGENTA, CONSOLE_COLOR_CYAN,
}; /*LCD_BPP == LCD_COLOR8 */
#elif LCD_BPP == LCD_COLOR16
#define N_BLK_VERT 2
#define N_BLK_HOR 4
static int test_colors[N_BLK_HOR * N_BLK_VERT] = {
CONSOLE_COLOR_RED, CONSOLE_COLOR_GREEN, CONSOLE_COLOR_YELLOW, CONSOLE_COLOR_BLUE,
CONSOLE_COLOR_MAGENTA, CONSOLE_COLOR_CYAN, CONSOLE_COLOR_GREY, CONSOLE_COLOR_WHITE,
};
#endif /*LCD_BPP == LCD_COLOR16 */
static void test_pattern(void)
{
ushort v_max = panel_info.vl_row;
ushort h_max = panel_info.vl_col;
ushort v_step = (v_max + N_BLK_VERT - 1) / N_BLK_VERT;
ushort h_step = (h_max + N_BLK_HOR - 1) / N_BLK_HOR;
ushort v, h;
#if LCD_BPP == LCD_COLOR8
uchar *pix = (uchar *)lcd_base;
#elif LCD_BPP == LCD_COLOR16
ushort *pix = (ushort *)lcd_base;
#endif
printf("[LCD] Test Pattern: %d x %d [%d x %d]\n",
h_max, v_max, h_step, v_step);
for (v = 0; v < v_max; ++v) {
uchar iy = v / v_step;
for (h = 0; h < h_max; ++h) {
uchar ix = N_BLK_HOR * iy + h / h_step;
*pix++ = test_colors[ix];
}
}
}
#endif /* LCD_TEST_PATTERN */
/*
* With most lcd drivers the line length is set up
* by calculating it from panel_info parameters. Some
* drivers need to calculate the line length differently,
* so make the function weak to allow overriding it.
*/
__weak int lcd_get_size(int *line_length)
{
*line_length = (panel_info.vl_col * NBITS(panel_info.vl_bpix)) / 8;
return *line_length * panel_info.vl_row;
}
int drv_lcd_init(void)
{
struct stdio_dev lcddev;
int rc;
lcd_base = map_sysmem(gd->fb_base, 0);
lcd_init(lcd_base);
/* Device initialization */
memset(&lcddev, 0, sizeof(lcddev));
strcpy(lcddev.name, "lcd");
lcddev.ext = 0; /* No extensions */
lcddev.flags = DEV_FLAGS_OUTPUT; /* Output only */
lcddev.putc = lcd_stub_putc; /* 'putc' function */
lcddev.puts = lcd_stub_puts; /* 'puts' function */
rc = stdio_register(&lcddev);
return (rc == 0) ? 1 : rc;
}
void lcd_clear(void)
{
int bg_color;
char *s;
ulong addr;
static int do_splash = 1;
#if LCD_BPP == LCD_COLOR8
/* Setting the palette */
lcd_setcolreg(CONSOLE_COLOR_BLACK, 0, 0, 0);
lcd_setcolreg(CONSOLE_COLOR_RED, 0xFF, 0, 0);
lcd_setcolreg(CONSOLE_COLOR_GREEN, 0, 0xFF, 0);
lcd_setcolreg(CONSOLE_COLOR_YELLOW, 0xFF, 0xFF, 0);
lcd_setcolreg(CONSOLE_COLOR_BLUE, 0, 0, 0xFF);
lcd_setcolreg(CONSOLE_COLOR_MAGENTA, 0xFF, 0, 0xFF);
lcd_setcolreg(CONSOLE_COLOR_CYAN, 0, 0xFF, 0xFF);
lcd_setcolreg(CONSOLE_COLOR_GREY, 0xAA, 0xAA, 0xAA);
lcd_setcolreg(CONSOLE_COLOR_WHITE, 0xFF, 0xFF, 0xFF);
#endif
#ifndef CONFIG_SYS_WHITE_ON_BLACK
lcd_setfgcolor(CONSOLE_COLOR_BLACK);
lcd_setbgcolor(CONSOLE_COLOR_WHITE);
bg_color = CONSOLE_COLOR_WHITE;
#else
lcd_setfgcolor(CONSOLE_COLOR_WHITE);
lcd_setbgcolor(CONSOLE_COLOR_BLACK);
bg_color = CONSOLE_COLOR_BLACK;
#endif /* CONFIG_SYS_WHITE_ON_BLACK */
#ifdef LCD_TEST_PATTERN
test_pattern();
#else
/* set framebuffer to background color */
#if (LCD_BPP != LCD_COLOR32)
memset((char *)lcd_base, bg_color, lcd_line_length * panel_info.vl_row);
#else
u32 *ppix = lcd_base;
u32 i;
for (i = 0;
i < (lcd_line_length * panel_info.vl_row)/NBYTES(panel_info.vl_bpix);
i++) {
*ppix++ = bg_color;
}
#endif
#endif
/* setup text-console */
debug("[LCD] setting up console...\n");
lcd_init_console(lcd_base,
panel_info.vl_col,
panel_info.vl_row,
panel_info.vl_rot);
/* Paint the logo and retrieve LCD base address */
debug("[LCD] Drawing the logo...\n");
if (do_splash) {
s = getenv("splashimage");
if (s) {
do_splash = 0;
addr = simple_strtoul(s, NULL, 16);
if (lcd_splash(addr) == 0) {
lcd_sync();
return;
}
}
}
lcd_logo();
#if defined(CONFIG_LCD_LOGO) && !defined(CONFIG_LCD_INFO_BELOW_LOGO)
addr = (ulong)lcd_base + BMP_LOGO_HEIGHT * lcd_line_length;
lcd_init_console((void *)addr, panel_info.vl_col,
panel_info.vl_row, panel_info.vl_rot);
#endif
lcd_sync();
}
static int do_lcd_clear(cmd_tbl_t *cmdtp, int flag, int argc,
char *const argv[])
{
lcd_clear();
return 0;
}
U_BOOT_CMD(cls, 1, 1, do_lcd_clear, "clear screen", "");
static int lcd_init(void *lcdbase)
{
debug("[LCD] Initializing LCD frambuffer at %p\n", lcdbase);
lcd_ctrl_init(lcdbase);
/*
* lcd_ctrl_init() of some drivers (i.e. bcm2835 on rpi) ignores
* the 'lcdbase' argument and uses custom lcd base address
* by setting up gd->fb_base. Check for this condition and fixup
* 'lcd_base' address.
*/
if (map_to_sysmem(lcdbase) != gd->fb_base)
lcd_base = map_sysmem(gd->fb_base, 0);
debug("[LCD] Using LCD frambuffer at %p\n", lcd_base);
lcd_get_size(&lcd_line_length);
lcd_is_enabled = 1;
lcd_clear();
lcd_enable();
/* Initialize the console */
lcd_set_col(0);
#ifdef CONFIG_LCD_INFO_BELOW_LOGO
lcd_set_row(7 + BMP_LOGO_HEIGHT / VIDEO_FONT_HEIGHT);
#else
lcd_set_row(1); /* leave 1 blank line below logo */
#endif
return 0;
}
/*
* This is called early in the system initialization to grab memory
* for the LCD controller.
* Returns new address for monitor, after reserving LCD buffer memory
*
* Note that this is running from ROM, so no write access to global data.
*/
ulong lcd_setmem(ulong addr)
{
ulong size;
int line_length;
debug("LCD panel info: %d x %d, %d bit/pix\n", panel_info.vl_col,
panel_info.vl_row, NBITS(panel_info.vl_bpix));
size = lcd_get_size(&line_length);
/* Round up to nearest full page, or MMU section if defined */
size = ALIGN(size, CONFIG_LCD_ALIGNMENT);
addr = ALIGN(addr - CONFIG_LCD_ALIGNMENT + 1, CONFIG_LCD_ALIGNMENT);
/* Allocate pages for the frame buffer. */
addr -= size;
debug("Reserving %ldk for LCD Framebuffer at: %08lx\n",
size >> 10, addr);
return addr;
}
static void lcd_setfgcolor(int color)
{
lcd_color_fg = color;
}
int lcd_getfgcolor(void)
{
return lcd_color_fg;
}
static void lcd_setbgcolor(int color)
{
lcd_color_bg = color;
}
int lcd_getbgcolor(void)
{
return lcd_color_bg;
}
#ifdef CONFIG_LCD_LOGO
__weak void lcd_logo_set_cmap(void)
{
int i;
ushort *cmap = configuration_get_cmap();
for (i = 0; i < ARRAY_SIZE(bmp_logo_palette); ++i)
*cmap++ = bmp_logo_palette[i];
}
void lcd_logo_plot(int x, int y)
{
ushort i, j;
uchar *bmap = &bmp_logo_bitmap[0];
unsigned bpix = NBITS(panel_info.vl_bpix);
uchar *fb = (uchar *)(lcd_base + y * lcd_line_length + x * bpix / 8);
ushort *fb16;
debug("Logo: width %d height %d colors %d\n",
BMP_LOGO_WIDTH, BMP_LOGO_HEIGHT, BMP_LOGO_COLORS);
if (bpix < 12) {
WATCHDOG_RESET();
lcd_logo_set_cmap();
WATCHDOG_RESET();
for (i = 0; i < BMP_LOGO_HEIGHT; ++i) {
memcpy(fb, bmap, BMP_LOGO_WIDTH);
bmap += BMP_LOGO_WIDTH;
fb += panel_info.vl_col;
}
}
else { /* true color mode */
u16 col16;
fb16 = (ushort *)fb;
for (i = 0; i < BMP_LOGO_HEIGHT; ++i) {
for (j = 0; j < BMP_LOGO_WIDTH; j++) {
col16 = bmp_logo_palette[(bmap[j]-16)];
fb16[j] =
((col16 & 0x000F) << 1) |
((col16 & 0x00F0) << 3) |
((col16 & 0x0F00) << 4);
}
bmap += BMP_LOGO_WIDTH;
fb16 += panel_info.vl_col;
}
}
WATCHDOG_RESET();
lcd_sync();
}
#else
static inline void lcd_logo_plot(int x, int y) {}
#endif /* CONFIG_LCD_LOGO */
#if defined(CONFIG_CMD_BMP) || defined(CONFIG_SPLASH_SCREEN)
#ifdef CONFIG_SPLASH_SCREEN_ALIGN
#define BMP_ALIGN_CENTER 0x7FFF
static void splash_align_axis(int *axis, unsigned long panel_size,
unsigned long picture_size)
{
unsigned long panel_picture_delta = panel_size - picture_size;
unsigned long axis_alignment;
if (*axis == BMP_ALIGN_CENTER)
axis_alignment = panel_picture_delta / 2;
else if (*axis < 0)
axis_alignment = panel_picture_delta + *axis + 1;
else
return;
*axis = max(0, (int)axis_alignment);
}
#endif
#ifdef CONFIG_LCD_BMP_RLE8
#define BMP_RLE8_ESCAPE 0
#define BMP_RLE8_EOL 0
#define BMP_RLE8_EOBMP 1
#define BMP_RLE8_DELTA 2
static void draw_unencoded_bitmap(ushort **fbp, uchar *bmap, ushort *cmap,
int cnt)
{
while (cnt > 0) {
*(*fbp)++ = cmap[*bmap++];
cnt--;
}
}
static void draw_encoded_bitmap(ushort **fbp, ushort c, int cnt)
{
ushort *fb = *fbp;
int cnt_8copy = cnt >> 3;
cnt -= cnt_8copy << 3;
while (cnt_8copy > 0) {
*fb++ = c;
*fb++ = c;
*fb++ = c;
*fb++ = c;
*fb++ = c;
*fb++ = c;
*fb++ = c;
*fb++ = c;
cnt_8copy--;
}
while (cnt > 0) {
*fb++ = c;
cnt--;
}
*fbp = fb;
}
/*
* Do not call this function directly, must be called from lcd_display_bitmap.
*/
static void lcd_display_rle8_bitmap(struct bmp_image *bmp, ushort *cmap,
uchar *fb, int x_off, int y_off)
{
uchar *bmap;
ulong width, height;
ulong cnt, runlen;
int x, y;
int decode = 1;
width = get_unaligned_le32(&bmp->header.width);
height = get_unaligned_le32(&bmp->header.height);
bmap = (uchar *)bmp + get_unaligned_le32(&bmp->header.data_offset);
x = 0;
y = height - 1;
while (decode) {
if (bmap[0] == BMP_RLE8_ESCAPE) {
switch (bmap[1]) {
case BMP_RLE8_EOL:
/* end of line */
bmap += 2;
x = 0;
y--;
/* 16bpix, 2-byte per pixel, width should *2 */
fb -= (width * 2 + lcd_line_length);
break;
case BMP_RLE8_EOBMP:
/* end of bitmap */
decode = 0;
break;
case BMP_RLE8_DELTA:
/* delta run */
x += bmap[2];
y -= bmap[3];
/* 16bpix, 2-byte per pixel, x should *2 */
fb = (uchar *) (lcd_base + (y + y_off - 1)
* lcd_line_length + (x + x_off) * 2);
bmap += 4;
break;
default:
/* unencoded run */
runlen = bmap[1];
bmap += 2;
if (y < height) {
if (x < width) {
if (x + runlen > width)
cnt = width - x;
else
cnt = runlen;
draw_unencoded_bitmap(
(ushort **)&fb,
bmap, cmap, cnt);
}
x += runlen;
}
bmap += runlen;
if (runlen & 1)
bmap++;
}
} else {
/* encoded run */
if (y < height) {
runlen = bmap[0];
if (x < width) {
/* aggregate the same code */
while (bmap[0] == 0xff &&
bmap[2] != BMP_RLE8_ESCAPE &&
bmap[1] == bmap[3]) {
runlen += bmap[2];
bmap += 2;
}
if (x + runlen > width)
cnt = width - x;
else
cnt = runlen;
draw_encoded_bitmap((ushort **)&fb,
cmap[bmap[1]], cnt);
}
x += runlen;
}
bmap += 2;
}
}
}
#endif
__weak void fb_put_byte(uchar **fb, uchar **from)
{
*(*fb)++ = *(*from)++;
}
#if defined(CONFIG_BMP_16BPP)
__weak void fb_put_word(uchar **fb, uchar **from)
{
*(*fb)++ = *(*from)++;
*(*fb)++ = *(*from)++;
}
#endif /* CONFIG_BMP_16BPP */
__weak void lcd_set_cmap(struct bmp_image *bmp, unsigned colors)
{
int i;
struct bmp_color_table_entry cte;
ushort *cmap = configuration_get_cmap();
for (i = 0; i < colors; ++i) {
cte = bmp->color_table[i];
*cmap = (((cte.red) << 8) & 0xf800) |
(((cte.green) << 3) & 0x07e0) |
(((cte.blue) >> 3) & 0x001f);
#if defined(CONFIG_MPC823)
cmap--;
#else
cmap++;
#endif
}
}
int lcd_display_bitmap(ulong bmp_image, int x, int y)
{
ushort *cmap_base = NULL;
ushort i, j;
uchar *fb;
struct bmp_image *bmp = (struct bmp_image *)map_sysmem(bmp_image, 0);
uchar *bmap;
ushort padded_width;
unsigned long width, height, byte_width;
unsigned long pwidth = panel_info.vl_col;
unsigned colors, bpix, bmp_bpix;
int hdr_size;
struct bmp_color_table_entry *palette = bmp->color_table;
if (!bmp || !(bmp->header.signature[0] == 'B' &&
bmp->header.signature[1] == 'M')) {
printf("Error: no valid bmp image at %lx\n", bmp_image);
return 1;
}
width = get_unaligned_le32(&bmp->header.width);
height = get_unaligned_le32(&bmp->header.height);
bmp_bpix = get_unaligned_le16(&bmp->header.bit_count);
hdr_size = get_unaligned_le16(&bmp->header.size);
debug("hdr_size=%d, bmp_bpix=%d\n", hdr_size, bmp_bpix);
colors = 1 << bmp_bpix;
bpix = NBITS(panel_info.vl_bpix);
if (bpix != 1 && bpix != 8 && bpix != 16 && bpix != 32) {
printf ("Error: %d bit/pixel mode, but BMP has %d bit/pixel\n",
bpix, bmp_bpix);
return 1;
}
/*
* We support displaying 8bpp BMPs on 16bpp LCDs
* and displaying 24bpp BMPs on 32bpp LCDs
* */
if (bpix != bmp_bpix &&
!(bmp_bpix == 8 && bpix == 16) &&
!(bmp_bpix == 24 && bpix == 32)) {
printf ("Error: %d bit/pixel mode, but BMP has %d bit/pixel\n",
bpix, get_unaligned_le16(&bmp->header.bit_count));
return 1;
}
debug("Display-bmp: %d x %d with %d colors, display %d\n",
(int)width, (int)height, (int)colors, 1 << bpix);
if (bmp_bpix == 8)
lcd_set_cmap(bmp, colors);
padded_width = (width & 0x3 ? (width & ~0x3) + 4 : width);
#ifdef CONFIG_SPLASH_SCREEN_ALIGN
splash_align_axis(&x, pwidth, width);
splash_align_axis(&y, panel_info.vl_row, height);
#endif /* CONFIG_SPLASH_SCREEN_ALIGN */
if ((x + width) > pwidth)
width = pwidth - x;
if ((y + height) > panel_info.vl_row)
height = panel_info.vl_row - y;
bmap = (uchar *)bmp + get_unaligned_le32(&bmp->header.data_offset);
fb = (uchar *)(lcd_base +
(y + height - 1) * lcd_line_length + x * bpix / 8);
switch (bmp_bpix) {
case 1:
case 8: {
cmap_base = configuration_get_cmap();
#ifdef CONFIG_LCD_BMP_RLE8
u32 compression = get_unaligned_le32(&bmp->header.compression);
debug("compressed %d %d\n", compression, BMP_BI_RLE8);
if (compression == BMP_BI_RLE8) {
if (bpix != 16) {
/* TODO implement render code for bpix != 16 */
printf("Error: only support 16 bpix");
return 1;
}
lcd_display_rle8_bitmap(bmp, cmap_base, fb, x, y);
break;
}
#endif
if (bpix != 16)
byte_width = width;
else
byte_width = width * 2;
for (i = 0; i < height; ++i) {
WATCHDOG_RESET();
for (j = 0; j < width; j++) {
if (bpix != 16) {
fb_put_byte(&fb, &bmap);
} else {
struct bmp_color_table_entry *entry;
uint val;
if (cmap_base) {
val = cmap_base[*bmap];
} else {
entry = &palette[*bmap];
val = entry->blue >> 3 |
entry->green >> 2 << 5 |
entry->red >> 3 << 11;
}
*(uint16_t *)fb = val;
bmap++;
fb += sizeof(uint16_t) / sizeof(*fb);
}
}
bmap += (padded_width - width);
fb -= byte_width + lcd_line_length;
}
break;
}
#if defined(CONFIG_BMP_16BPP)
case 16:
for (i = 0; i < height; ++i) {
WATCHDOG_RESET();
for (j = 0; j < width; j++)
fb_put_word(&fb, &bmap);
bmap += (padded_width - width) * 2;
fb -= width * 2 + lcd_line_length;
}
break;
#endif /* CONFIG_BMP_16BPP */
#if defined(CONFIG_BMP_24BMP)
case 24:
for (i = 0; i < height; ++i) {
for (j = 0; j < width; j++) {
*(fb++) = *(bmap++);
*(fb++) = *(bmap++);
*(fb++) = *(bmap++);
*(fb++) = 0;
}
fb -= lcd_line_length + width * (bpix / 8);
}
break;
#endif /* CONFIG_BMP_24BMP */
#if defined(CONFIG_BMP_32BPP)
case 32:
for (i = 0; i < height; ++i) {
for (j = 0; j < width; j++) {
*(fb++) = *(bmap++);
*(fb++) = *(bmap++);
*(fb++) = *(bmap++);
*(fb++) = *(bmap++);
}
fb -= lcd_line_length + width * (bpix / 8);
}
break;
#endif /* CONFIG_BMP_32BPP */
default:
break;
};
lcd_sync();
return 0;
}
#endif
static void lcd_logo(void)
{
lcd_logo_plot(0, 0);
#ifdef CONFIG_LCD_INFO
lcd_set_col(LCD_INFO_X / VIDEO_FONT_WIDTH);
lcd_set_row(LCD_INFO_Y / VIDEO_FONT_HEIGHT);
lcd_show_board_info();
#endif /* CONFIG_LCD_INFO */
}
#ifdef CONFIG_SPLASHIMAGE_GUARD
static int on_splashimage(const char *name, const char *value, enum env_op op,
int flags)
{
ulong addr;
int aligned;
if (op == env_op_delete)
return 0;
addr = simple_strtoul(value, NULL, 16);
/* See README.displaying-bmps */
aligned = (addr % 4 == 2);
if (!aligned) {
printf("Invalid splashimage value. Value must be 16 bit aligned, but not 32 bit aligned\n");
return -1;
}
return 0;
}
U_BOOT_ENV_CALLBACK(splashimage, on_splashimage);
#endif
int lcd_get_pixel_width(void)
{
return panel_info.vl_col;
}
int lcd_get_pixel_height(void)
{
return panel_info.vl_row;
}