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u-boot/arch/x86/include/asm/pnp_def.h

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SPDX: Convert all of our single license tags to Linux Kernel style When U-Boot started using SPDX tags we were among the early adopters and there weren't a lot of other examples to borrow from. So we picked the area of the file that usually had a full license text and replaced it with an appropriate SPDX-License-Identifier: entry. Since then, the Linux Kernel has adopted SPDX tags and they place it as the very first line in a file (except where shebangs are used, then it's second line) and with slightly different comment styles than us. In part due to community overlap, in part due to better tag visibility and in part for other minor reasons, switch over to that style. This commit changes all instances where we have a single declared license in the tag as both the before and after are identical in tag contents. There's also a few places where I found we did not have a tag and have introduced one. Signed-off-by: Tom Rini <trini@konsulko.com>
2018-05-06 21:58:06 +00:00
/* SPDX-License-Identifier: GPL-2.0+ */
x86: Add a simple superio driver for SMSC LPC47M On most x86 boards, the legacy serial ports (io address 0x3f8/0x2f8) are provided by a superio chip connected to the LPC bus. We must program the superio chip so that serial ports are available for us. Signed-off-by: Bin Meng <bmeng.cn@gmail.com> Acked-by: Simon Glass <sjg@chromium.org>
2014-12-12 13:05:25 +00:00
/*
* Copyright (C) 2014, Bin Meng <bmeng.cn@gmail.com>
*
* Adapted from coreboot src/include/device/pnp_def.h
* and arch/x86/include/arch/io.h
*/
#ifndef _ASM_PNP_DEF_H_
#define _ASM_PNP_DEF_H_
#include <asm/io.h>
#define PNP_IDX_EN 0x30
#define PNP_IDX_IO0 0x60
#define PNP_IDX_IO1 0x62
#define PNP_IDX_IO2 0x64
#define PNP_IDX_IO3 0x66
#define PNP_IDX_IRQ0 0x70
#define PNP_IDX_IRQ1 0x72
#define PNP_IDX_DRQ0 0x74
#define PNP_IDX_DRQ1 0x75
#define PNP_IDX_MSC0 0xf0
#define PNP_IDX_MSC1 0xf1
/* Generic functions for pnp devices */
/*
* pnp device is a 16-bit integer composed of its i/o port address at high byte
* and logic function number at low byte.
*/
#define PNP_DEV(PORT, FUNC) (((PORT) << 8) | (FUNC))
static inline void pnp_write_config(uint16_t dev, uint8_t reg, uint8_t value)
{
uint8_t port = dev >> 8;
outb(reg, port);
outb(value, port + 1);
}
static inline uint8_t pnp_read_config(uint16_t dev, uint8_t reg)
{
uint8_t port = dev >> 8;
outb(reg, port);
return inb(port + 1);
}
static inline void pnp_set_logical_device(uint16_t dev)
{
uint8_t device = dev & 0xff;
pnp_write_config(dev, 0x07, device);
}
static inline void pnp_set_enable(uint16_t dev, int enable)
{
pnp_write_config(dev, PNP_IDX_EN, enable ? 1 : 0);
}
static inline int pnp_read_enable(uint16_t dev)
{
return !!pnp_read_config(dev, PNP_IDX_EN);
}
static inline void pnp_set_iobase(uint16_t dev, uint8_t index, uint16_t iobase)
{
pnp_write_config(dev, index + 0, (iobase >> 8) & 0xff);
pnp_write_config(dev, index + 1, iobase & 0xff);
}
static inline uint16_t pnp_read_iobase(uint16_t dev, uint8_t index)
{
return ((uint16_t)(pnp_read_config(dev, index)) << 8) |
pnp_read_config(dev, index + 1);
}
static inline void pnp_set_irq(uint16_t dev, uint8_t index, unsigned irq)
{
pnp_write_config(dev, index, irq);
}
static inline void pnp_set_drq(uint16_t dev, uint8_t index, unsigned drq)
{
pnp_write_config(dev, index, drq & 0xff);
}
#endif /* _ASM_PNP_DEF_H_ */
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