diff options
Diffstat (limited to 'common/lcd.c')
| -rw-r--r-- | common/lcd.c | 89 |
1 files changed, 72 insertions, 17 deletions
diff --git a/common/lcd.c b/common/lcd.c index b6be8002d2..3017604734 100644 --- a/common/lcd.c +++ b/common/lcd.c @@ -72,6 +72,15 @@ # endif #endif +#ifndef CONFIG_LCD_ALIGNMENT +#define CONFIG_LCD_ALIGNMENT PAGE_SIZE +#endif + +/* By default we scroll by a single line */ +#ifndef CONFIG_CONSOLE_SCROLL_LINES +#define CONFIG_CONSOLE_SCROLL_LINES 1 +#endif + DECLARE_GLOBAL_DATA_PTR; ulong lcd_setmem (ulong addr); @@ -90,6 +99,9 @@ static void lcd_setbgcolor(int color); char lcd_is_enabled = 0; +static char lcd_flush_dcache; /* 1 to flush dcache after each lcd update */ + + #ifdef NOT_USED_SO_FAR static void lcd_getcolreg(ushort regno, ushort *red, ushort *green, ushort *blue); @@ -98,15 +110,46 @@ static int lcd_getfgcolor(void); /************************************************************************/ +/* 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 console_scrollup(void) { - /* Copy up rows ignoring the first one */ - memcpy(CONSOLE_ROW_FIRST, CONSOLE_ROW_SECOND, CONSOLE_SCROLL_SIZE); + const int rows = CONFIG_CONSOLE_SCROLL_LINES; - /* Clear the last one */ - memset(CONSOLE_ROW_LAST, COLOR_MASK(lcd_color_bg), CONSOLE_ROW_SIZE); + /* Copy up rows ignoring those that will be overwritten */ + memcpy(CONSOLE_ROW_FIRST, + lcd_console_address + CONSOLE_ROW_SIZE * rows, + CONSOLE_SIZE - CONSOLE_ROW_SIZE * rows); + + /* Clear the last rows */ + memset(lcd_console_address + CONSOLE_SIZE - CONSOLE_ROW_SIZE * rows, + COLOR_MASK(lcd_color_bg), + CONSOLE_ROW_SIZE * rows); + + lcd_sync(); + console_row -= rows; } /*----------------------------------------------------------------------*/ @@ -135,7 +178,8 @@ static inline void console_newline(void) if (console_row >= CONSOLE_ROWS) { /* Scroll everything up */ console_scrollup(); - --console_row; + } else { + lcd_sync(); } } @@ -191,6 +235,7 @@ void lcd_puts(const char *s) while (*s) { lcd_putc(*s++); } + lcd_sync(); } /*----------------------------------------------------------------------*/ @@ -326,6 +371,12 @@ static void test_pattern(void) /* ** GENERIC Initialization Routines */ /************************************************************************/ +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; @@ -333,7 +384,7 @@ int drv_lcd_init (void) lcd_base = (void *)(gd->fb_base); - lcd_line_length = (panel_info.vl_col * NBITS (panel_info.vl_bpix)) / 8; + lcd_get_size(&lcd_line_length); lcd_init(lcd_base); /* LCD initialization */ @@ -352,13 +403,6 @@ int drv_lcd_init (void) } /*----------------------------------------------------------------------*/ -static -int do_lcd_clear(cmd_tbl_t *cmdtp, int flag, int argc, char *const argv[]) -{ - lcd_clear(); - return 0; -} - void lcd_clear(void) { #if LCD_BPP == LCD_MONOCHROME @@ -400,6 +444,14 @@ void lcd_clear(void) console_col = 0; console_row = 0; + 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( @@ -445,15 +497,16 @@ static int lcd_init(void *lcdbase) ulong lcd_setmem(ulong addr) { ulong size; - int line_length = (panel_info.vl_col * NBITS(panel_info.vl_bpix)) / 8; + 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 = line_length * panel_info.vl_row; + size = lcd_get_size(&line_length); - /* Round up to nearest full page */ - size = (size + (PAGE_SIZE - 1)) & ~(PAGE_SIZE - 1); + /* 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; @@ -610,6 +663,7 @@ void bitmap_plot(int x, int y) } WATCHDOG_RESET(); + lcd_sync(); } #else static inline void bitmap_plot(int x, int y) {} @@ -831,6 +885,7 @@ int lcd_display_bitmap(ulong bmp_image, int x, int y) break; }; + lcd_sync(); return 0; } #endif |