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superio: Replace the indexed I/O functions

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Replace the multiple indexed I/O read and write
functions with common functions.

Change-Id: Idfe7a8784c28d51b3fbcb2f4e26beaa0b91741a8
Signed-off-by: Dave Frodin <dave.frodin@se-eng.com>
Reviewed-on: http://review.coreboot.org/10145
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
Tested-by: build bot (Jenkins)
This commit is contained in:
Dave Frodin
2015-05-12 06:53:11 -06:00
parent d3b194e6fe
commit 2d3964ec29
7 changed files with 39 additions and 59 deletions
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39
src/include/device/pnp.h
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@ -5,6 +5,7 @@
#include <rules.h>
#include <device/device.h>
#include <device/pnp_def.h>
#include <arch/io.h>
#ifndef __SIMPLE_DEVICE__
@ -63,5 +64,43 @@ struct pnp_mode_ops {
void pnp_enter_conf_mode(device_t dev);
void pnp_exit_conf_mode(device_t dev);
/* PNP indexed I/O operations */
/*
* u8 pnp_read_index(u16 port, u8 reg)
* Description:
* This routine reads indexed I/O registers. The reg byte is written
* to the index register at I/O address = port. The result is then
* read from the data register at I/O address = port + 1.
*
* Parameters:
* @param[in] u16 port = The I/O address of the port index register.
* @param[in] u8 reg = The offset within the indexed space.
* @param[out] u8 result = The value read back from the data register.
*/
static inline u8 pnp_read_index(u16 port, u8 reg)
{
outb(reg, port);
return inb(port + 1);
}
/*
* void pnp_write_index(u16 port, u8 reg, u8 value)
* Description:
* This routine writes indexed I/O registers. The reg byte is written
* to the index register at I/O address = port. The value byte is then
* written to the data register at I/O address = port + 1.
*
* Parameters:
* @param[in] u16 port = The address of the port index register.
* @param[in] u8 reg = The offset within the indexed space.
* @param[in] u8 value = The value to be written to the data register.
*/
static inline void pnp_write_index(u16 port, u8 reg, u8 value)
{
outb(reg, port);
outb(value, port + 1);
}
#endif /* ! __SIMPLE_DEVICE__ */
#endif /* DEVICE_PNP_H */