mirror of
https://github.com/AsahiLinux/u-boot
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709ea543b9
At present stdio device functions do not get any clue as to which stdio
device is being acted on. Some implementations go to great lengths to work
around this, such as defining a whole separate set of functions for each
possible device.
For driver model we need to associate a stdio_dev with a device. It doesn't
seem possible to continue with this work-around approach.
Instead, add a stdio_dev pointer to each of the stdio member functions.
Note: The serial drivers have the same problem, but it is not strictly
necessary to fix that to get driver model running. Also, if we convert
serial over to driver model the problem will go away.
Code size increases by 244 bytes for Thumb2 and 428 for PowerPC.
22: stdio: Pass device pointer to stdio methods
arm: (for 2/2 boards) all +244.0 bss -4.0 text +248.0
powerpc: (for 1/1 boards) all +428.0 text +428.0
Signed-off-by: Simon Glass <sjg@chromium.org>
Acked-by: Marek Vasut <marex@denx.de>
Reviewed-by: Marek Vasut <marex@denx.de>
81 lines
2.5 KiB
C
81 lines
2.5 KiB
C
/*
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* (C) Copyright 2002 ELTEC Elektronik AG
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* Frank Gottschling <fgottschling@eltec.de>
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*
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* SPDX-License-Identifier: GPL-2.0+
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*/
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/* i8042.h - Intel 8042 keyboard driver header */
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#ifndef _I8042_H_
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#define _I8042_H_
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#ifdef __I386__
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#include <common.h>
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#include <asm/io.h>
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#define in8(p) inb(p)
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#define out8(p,v) outb(v,p)
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#endif
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/* defines */
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#define I8042_DATA_REG (CONFIG_SYS_ISA_IO + 0x0060) /* keyboard i/o buffer */
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#define I8042_STATUS_REG (CONFIG_SYS_ISA_IO + 0x0064) /* keyboard status read */
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#define I8042_COMMAND_REG (CONFIG_SYS_ISA_IO + 0x0064) /* keyboard ctrl write */
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enum {
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/* Output register (I8042_DATA_REG) has data for system */
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I8042_STATUS_OUT_DATA = 1 << 0,
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I8042_STATUS_IN_DATA = 1 << 1,
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};
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#define KBD_US 0 /* default US layout */
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#define KBD_GER 1 /* german layout */
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#define KBD_TIMEOUT 1000 /* 1 sec */
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#define KBD_RESET_TRIES 3
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#define AS 0 /* normal character index */
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#define SH 1 /* shift index */
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#define CN 2 /* control index */
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#define NM 3 /* numeric lock index */
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#define AK 4 /* right alt key */
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#define CP 5 /* capslock index */
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#define ST 6 /* stop output index */
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#define EX 7 /* extended code index */
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#define ES 8 /* escape and extended code index */
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#define NORMAL 0x0000 /* normal key */
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#define STP 0x0001 /* scroll lock stop output*/
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#define NUM 0x0002 /* numeric lock */
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#define CAPS 0x0004 /* capslock */
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#define SHIFT 0x0008 /* shift */
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#define CTRL 0x0010 /* control*/
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#define EXT 0x0020 /* extended scan code 0xe0 */
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#define ESC 0x0040 /* escape key press */
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#define E1 0x0080 /* extended scan code 0xe1 */
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#define BRK 0x0100 /* make break flag for keyboard */
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#define ALT 0x0200 /* right alt */
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/* exports */
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/**
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* Flush all buffer from keyboard controller to host.
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*/
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void i8042_flush(void);
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/**
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* Disables the keyboard so that key strokes no longer generate scancodes to
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* the host.
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*
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* @return 0 if ok, -1 if keyboard input was found while disabling
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*/
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int i8042_disable(void);
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struct stdio_dev;
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int i8042_kbd_init(void);
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int i8042_tstc(struct stdio_dev *dev);
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int i8042_getc(struct stdio_dev *dev);
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#endif /* _I8042_H_ */
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