f81f335a56
This is one of the hackiest Alpha machines, and the only one without PCI support. Removing this allows cleaning up code in eise and tty drivers in addition to the architecture code. Acked-by: Paul E. McKenney <paulmck@kernel.org> Acked-by: Matt Turner <mattst88@gmail.com> Signed-off-by: Arnd Bergmann <arnd@arndb.de>
87 lines
1.6 KiB
C
87 lines
1.6 KiB
C
/* SPDX-License-Identifier: GPL-2.0-only */
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#ifndef _I8042_IO_H
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#define _I8042_IO_H
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/*
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* Names.
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*/
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#define I8042_KBD_PHYS_DESC "isa0060/serio0"
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#define I8042_AUX_PHYS_DESC "isa0060/serio1"
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#define I8042_MUX_PHYS_DESC "isa0060/serio%d"
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/*
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* IRQs.
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*/
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#if defined(__arm__)
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/* defined in include/asm-arm/arch-xxx/irqs.h */
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#include <asm/irq.h>
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#elif defined(CONFIG_PPC)
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extern int of_i8042_kbd_irq;
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extern int of_i8042_aux_irq;
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# define I8042_KBD_IRQ of_i8042_kbd_irq
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# define I8042_AUX_IRQ of_i8042_aux_irq
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#else
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# define I8042_KBD_IRQ 1
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# define I8042_AUX_IRQ 12
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#endif
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/*
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* Register numbers.
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*/
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#define I8042_COMMAND_REG 0x64
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#define I8042_STATUS_REG 0x64
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#define I8042_DATA_REG 0x60
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static inline int i8042_read_data(void)
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{
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return inb(I8042_DATA_REG);
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}
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static inline int i8042_read_status(void)
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{
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return inb(I8042_STATUS_REG);
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}
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static inline void i8042_write_data(int val)
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{
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outb(val, I8042_DATA_REG);
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}
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static inline void i8042_write_command(int val)
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{
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outb(val, I8042_COMMAND_REG);
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}
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static inline int i8042_platform_init(void)
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{
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/*
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* On some platforms touching the i8042 data register region can do really
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* bad things. Because of this the region is always reserved on such boxes.
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*/
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#if defined(CONFIG_PPC)
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if (check_legacy_ioport(I8042_DATA_REG))
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return -ENODEV;
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#endif
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#if !defined(__sh__) && !defined(__alpha__)
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if (!request_region(I8042_DATA_REG, 16, "i8042"))
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return -EBUSY;
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#endif
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i8042_reset = I8042_RESET_ALWAYS;
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return 0;
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}
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static inline void i8042_platform_exit(void)
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{
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#if !defined(__sh__) && !defined(__alpha__)
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release_region(I8042_DATA_REG, 16);
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#endif
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}
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#endif /* _I8042_IO_H */
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