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MIPS: PMC MSP71XX gpio drivers

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This new gpio driver for PMC-Sierra's MSP71xx SoC allows
standard api calls for access to the general and extended
gpio's.

Signed-off-by: Patrick Glass <patrickglass@gmail.com>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

 create mode 100755 arch/mips/pmc-sierra/msp71xx/gpio.c
 create mode 100755 arch/mips/pmc-sierra/msp71xx/gpio_extended.c
 create mode 100755 include/asm-mips/pmc-sierra/msp71xx/gpio.h
This commit is contained in:
Patrick Glass 2008-08-18 14:41:30 -07:00 • committed by Ralf Baechle
commit 9fa32c6b02
4 changed files with 413 additions and 0 deletions
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include/asm-mips/pmc-sierra/msp71xx/gpio.h Normal file
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/*
* include/asm-mips/pmc-sierra/msp71xx/gpio.h
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*
* @author Patrick Glass <patrickglass@gmail.com>
*/
#ifndef __PMC_MSP71XX_GPIO_H
#define __PMC_MSP71XX_GPIO_H
/* Max number of gpio's is 28 on chip plus 3 banks of I2C IO Expanders */
#define ARCH_NR_GPIOS (28 + (3 * 8))
/* new generic GPIO API - see Documentation/gpio.txt */
#include <asm-generic/gpio.h>
#define gpio_get_value __gpio_get_value
#define gpio_set_value __gpio_set_value
#define gpio_cansleep __gpio_cansleep
/* Setup calls for the gpio and gpio extended */
extern void msp71xx_init_gpio(void);
extern void msp71xx_init_gpio_extended(void);
extern int msp71xx_set_output_drive(unsigned gpio, int value);
/* Custom output drive functionss */
static inline int gpio_set_output_drive(unsigned gpio, int value)
{
return msp71xx_set_output_drive(gpio, value);
}
/* IRQ's are not supported for gpio lines */
static inline int gpio_to_irq(unsigned gpio)
{
return -EINVAL;
}
static inline int irq_to_gpio(unsigned irq)
{
return -EINVAL;
}
#endif /* __PMC_MSP71XX_GPIO_H */