From ace9429bb58fd418f0c81d4c2835699bddf6bde6 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Thu, 11 Apr 2024 10:27:49 +0200 Subject: Adding upstream version 6.6.15. Signed-off-by: Daniel Baumann --- drivers/input/serio/i8042-io.h | 89 ++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 89 insertions(+) create mode 100644 drivers/input/serio/i8042-io.h (limited to 'drivers/input/serio/i8042-io.h') diff --git a/drivers/input/serio/i8042-io.h b/drivers/input/serio/i8042-io.h new file mode 100644 index 0000000000..64590b86eb --- /dev/null +++ b/drivers/input/serio/i8042-io.h @@ -0,0 +1,89 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ +#ifndef _I8042_IO_H +#define _I8042_IO_H + + +/* + * Names. + */ + +#define I8042_KBD_PHYS_DESC "isa0060/serio0" +#define I8042_AUX_PHYS_DESC "isa0060/serio1" +#define I8042_MUX_PHYS_DESC "isa0060/serio%d" + +/* + * IRQs. + */ + +#ifdef __alpha__ +# define I8042_KBD_IRQ 1 +# define I8042_AUX_IRQ (RTC_PORT(0) == 0x170 ? 9 : 12) /* Jensen is special */ +#elif defined(__arm__) +/* defined in include/asm-arm/arch-xxx/irqs.h */ +#include +#elif defined(CONFIG_PPC) +extern int of_i8042_kbd_irq; +extern int of_i8042_aux_irq; +# define I8042_KBD_IRQ of_i8042_kbd_irq +# define I8042_AUX_IRQ of_i8042_aux_irq +#else +# define I8042_KBD_IRQ 1 +# define I8042_AUX_IRQ 12 +#endif + + +/* + * Register numbers. + */ + +#define I8042_COMMAND_REG 0x64 +#define I8042_STATUS_REG 0x64 +#define I8042_DATA_REG 0x60 + +static inline int i8042_read_data(void) +{ + return inb(I8042_DATA_REG); +} + +static inline int i8042_read_status(void) +{ + return inb(I8042_STATUS_REG); +} + +static inline void i8042_write_data(int val) +{ + outb(val, I8042_DATA_REG); +} + +static inline void i8042_write_command(int val) +{ + outb(val, I8042_COMMAND_REG); +} + +static inline int i8042_platform_init(void) +{ +/* + * On some platforms touching the i8042 data register region can do really + * bad things. Because of this the region is always reserved on such boxes. + */ +#if defined(CONFIG_PPC) + if (check_legacy_ioport(I8042_DATA_REG)) + return -ENODEV; +#endif +#if !defined(__sh__) && !defined(__alpha__) + if (!request_region(I8042_DATA_REG, 16, "i8042")) + return -EBUSY; +#endif + + i8042_reset = I8042_RESET_ALWAYS; + return 0; +} + +static inline void i8042_platform_exit(void) +{ +#if !defined(__sh__) && !defined(__alpha__) + release_region(I8042_DATA_REG, 16); +#endif +} + +#endif /* _I8042_IO_H */ -- cgit v1.2.3