diff options
| author |   Yang Zhang <yang.z.zhang@intel.com> | 2015-08-28 09:58:54 +0800 |
|---|---|---|
| committer | Yang Zhang <yang.z.zhang@intel.com> | 2015-09-01 12:44:00 +0800 |
| commit | e44e3482bdb4d0ebde2d8b41830ac2cdb07948fb (patch) | |
| tree | 66b09f592c55df2878107a468a91d21506104d3f /qemu/roms/u-boot/drivers/misc/pdsp188x.c | |
| parent | 9ca8dbcc65cfc63d6f5ef3312a33184e1d726e00 (diff) | |
Add qemu 2.4.0
Change-Id: Ic99cbad4b61f8b127b7dc74d04576c0bcbaaf4f5
Signed-off-by: Yang Zhang <yang.z.zhang@intel.com>
Diffstat (limited to 'qemu/roms/u-boot/drivers/misc/pdsp188x.c')
| -rw-r--r-- | qemu/roms/u-boot/drivers/misc/pdsp188x.c | 45 |
1 files changed, 45 insertions, 0 deletions
diff --git a/qemu/roms/u-boot/drivers/misc/pdsp188x.c b/qemu/roms/u-boot/drivers/misc/pdsp188x.c new file mode 100644 index 000000000..aa4351a0a --- /dev/null +++ b/qemu/roms/u-boot/drivers/misc/pdsp188x.c @@ -0,0 +1,45 @@ +/* + * Copyright 2010 Sergey Poselenov, Emcraft Systems, <sposelenov@emcraft.com> + * Copyright 2010 Ilya Yanok, Emcraft Systems, <yanok@emcraft.com> + * + * SPDX-License-Identifier: GPL-2.0+ + */ + +#include <common.h> +#include <led-display.h> +#include <asm/io.h> + +#ifdef CONFIG_CMD_DISPLAY +#define CWORD_CLEAR 0x80 +#define CLEAR_DELAY (110 * 2) +#define DISPLAY_SIZE 8 + +static int pos; /* Current display position */ + +/* Handle different display commands */ +void display_set(int cmd) +{ + if (cmd & DISPLAY_CLEAR) { + out_8((unsigned char *)CONFIG_SYS_DISP_CWORD, CWORD_CLEAR); + udelay(1000 * CLEAR_DELAY); + } + + if (cmd & DISPLAY_HOME) { + pos = 0; + } +} + +/* + * Display a character at the current display position. + * Characters beyond the display size are ignored. + */ +int display_putc(char c) +{ + if (pos >= DISPLAY_SIZE) + return -1; + + out_8((unsigned char *)CONFIG_SYS_DISP_CHR_RAM + pos++, c); + + return c; +} +#endif |