EXPORT_SYMBOL(adm5120_gpio_free);
EXPORT_SYMBOL(adm5120_gpio_to_irq);
EXPORT_SYMBOL(adm5120_irq_to_gpio);
-/*
- * $Id$
- *
- * ADM5120 GPIO support
- *
- * Copyright (C) 2007 OpenWrt.org
- * Copyright (C) 2007 Gabor Juhos <juhosg@freemail.hu>
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the
- * Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
- * Boston, MA 02110-1301, USA.
- *
- */
-
-#include <linux/autoconf.h>
-#include <linux/init.h>
-#include <linux/types.h>
-#include <linux/module.h>
-#include <linux/delay.h>
-#include <linux/platform_device.h>
-
-#include <asm/addrspace.h>
-#include <asm/io.h>
-#include <asm/gpio.h>
-
-#include <asm/mach-adm5120/adm5120_defs.h>
-#include <asm/mach-adm5120/adm5120_info.h>
-#include <asm/mach-adm5120/adm5120_switch.h>
-
-typedef void __iomem * gpio_reg_t;
-#define GPIO_READ(r) readl((r))
-#define GPIO_WRITE(v,r) writel((v),(r))
-#define GPIO_REG(r) (gpio_reg_t)(KSEG1ADDR(ADM5120_SWITCH_BASE)+r)
-
-struct adm5120_gpio_line {
- u32 flags;
- const char *label;
-};
-
-#define GPIO_FLAG_VALID 0x01
-#define GPIO_FLAG_USED 0x02
-
-struct led_desc {
- gpio_reg_t reg; /* LED register address */
- u8 iv_shift; /* shift amount for input bit */
- u8 mode_shift; /* shift amount for mode bits */
-};
-
-#define LED_DESC(_port,_led) { \
- .reg = GPIO_REG(SWITCH_REG_PORT0_LED+_port*4), \
- .iv_shift = LED0_IV_SHIFT+_led, \
- .mode_shift = _led*4 \
- }
-
-static struct led_desc led_table[15] = {
- LED_DESC(0, 0), LED_DESC(0, 1), LED_DESC(0, 2),
- LED_DESC(1, 0), LED_DESC(1, 1), LED_DESC(1, 2),
- LED_DESC(2, 0), LED_DESC(2, 1), LED_DESC(2, 2),
- LED_DESC(3, 0), LED_DESC(3, 1), LED_DESC(3, 2),
- LED_DESC(4, 0), LED_DESC(4, 1), LED_DESC(4, 2)
-};
-
-static struct adm5120_gpio_line adm5120_gpio_map[ADM5120_GPIO_COUNT] = {
- [ADM5120_GPIO_PIN0] = {.flags = GPIO_FLAG_VALID},
- [ADM5120_GPIO_PIN1] = {.flags = GPIO_FLAG_VALID},
- [ADM5120_GPIO_PIN2] = {.flags = GPIO_FLAG_VALID},
- [ADM5120_GPIO_PIN3] = {.flags = GPIO_FLAG_VALID},
- [ADM5120_GPIO_PIN4] = {.flags = GPIO_FLAG_VALID},
- [ADM5120_GPIO_PIN5] = {.flags = GPIO_FLAG_VALID},
- [ADM5120_GPIO_PIN6] = {.flags = GPIO_FLAG_VALID},
- [ADM5120_GPIO_PIN7] = {.flags = GPIO_FLAG_VALID},
- [ADM5120_GPIO_P0L0] = {.flags = GPIO_FLAG_VALID},
- [ADM5120_GPIO_P0L1] = {.flags = GPIO_FLAG_VALID},
- [ADM5120_GPIO_P0L2] = {.flags = GPIO_FLAG_VALID},
- [ADM5120_GPIO_P1L0] = {.flags = GPIO_FLAG_VALID},
- [ADM5120_GPIO_P1L1] = {.flags = GPIO_FLAG_VALID},
- [ADM5120_GPIO_P1L2] = {.flags = GPIO_FLAG_VALID},
- [ADM5120_GPIO_P2L0] = {.flags = GPIO_FLAG_VALID},
- [ADM5120_GPIO_P2L1] = {.flags = GPIO_FLAG_VALID},
- [ADM5120_GPIO_P2L2] = {.flags = GPIO_FLAG_VALID},
- [ADM5120_GPIO_P3L0] = {.flags = GPIO_FLAG_VALID},
- [ADM5120_GPIO_P3L1] = {.flags = GPIO_FLAG_VALID},
- [ADM5120_GPIO_P3L2] = {.flags = GPIO_FLAG_VALID},
- [ADM5120_GPIO_P4L0] = {.flags = GPIO_FLAG_VALID},
- [ADM5120_GPIO_P4L1] = {.flags = GPIO_FLAG_VALID},
- [ADM5120_GPIO_P4L2] = {.flags = GPIO_FLAG_VALID}
-};
-
-#define gpio_is_invalid(g) ( \
- (g) > ADM5120_GPIO_MAX || \
- ((adm5120_gpio_map[(g)].flags & GPIO_FLAG_VALID) == 0) \
- )
-
-#define gpio_is_used(g) ((adm5120_gpio_map[(g)].flags & GPIO_FLAG_USED) != 0)
-
-/*
- * Helpers for GPIO lines in GPIO_CONF0 register
- */
-#define PIN_IM(p) ((1 << GPIO_CONF0_IM_SHIFT) << p)
-#define PIN_IV(p) ((1 << GPIO_CONF0_IV_SHIFT) << p)
-#define PIN_OE(p) ((1 << GPIO_CONF0_OE_SHIFT) << p)
-#define PIN_OV(p) ((1 << GPIO_CONF0_OV_SHIFT) << p)
-
-static inline int pins_direction_input(unsigned pin)
-{
- gpio_reg_t *reg;
- u32 t;
-
- reg = GPIO_REG(SWITCH_REG_GPIO_CONF0);
-
- t = GPIO_READ(reg);
- t &= ~(PIN_OE(pin));
- t |= PIN_IM(pin);
- GPIO_WRITE(t,reg);
-
- return 0;
-}
-
-static inline int pins_direction_output(unsigned pin, int value)
-{
- gpio_reg_t *reg;
- u32 t;
-
- reg = GPIO_REG(SWITCH_REG_GPIO_CONF0);
-
- t = GPIO_READ(reg);
- t &= ~(PIN_IM(pin) | PIN_OV(pin));
- t |= PIN_OE(pin);
-
- if (value)
- t |= PIN_OV(pin);
-
- GPIO_WRITE(t,reg);
-
- return 0;
-}
-
-static inline int pins_get_value(unsigned pin)
-{
- gpio_reg_t *reg;
- u32 t;
-
- reg = GPIO_REG(SWITCH_REG_GPIO_CONF0);
-
- t = GPIO_READ(reg);
- if ((t & PIN_IM(pin)) != 0)
- t &= PIN_IV(pin);
- else
- t &= PIN_OV(pin);
-
- return (t) ? 1 : 0;
-}
-
-static inline void pins_set_value(unsigned pin, int value)
-{
- gpio_reg_t *reg;
- u32 t;
-
- reg = GPIO_REG(SWITCH_REG_GPIO_CONF0);
-
- t = GPIO_READ(reg);
- if (value == 0)
- t &= ~(PIN_OV(pin));
- else
- t |= PIN_OV(pin);
-
- GPIO_WRITE(t,reg);
-}
-
-/*
- * Helpers for GPIO lines in PORTx_LED registers
- */
-static inline int leds_direction_input(unsigned led)
-{
- gpio_reg_t *reg;
- u32 t;
-
- reg = led_table[led].reg;
- t = GPIO_READ(reg);
- t &= ~(LED_MODE_MASK << led_table[led].mode_shift);
- GPIO_WRITE(t,reg);
-
- return 0;
-}
-
-static inline int leds_direction_output(unsigned led, int value)
-{
- gpio_reg_t *reg;
- u32 t, s;
-
- reg = led_table[led].reg;
- s = led_table[led].mode_shift;
-
- t = GPIO_READ(reg);
- t &= ~(LED_MODE_MASK << s);
- if (value)
- t |= (LED_MODE_OUT_HIGH << s);
- else
- t |= (LED_MODE_OUT_LOW << s);
-
- GPIO_WRITE(t,reg);
-
- return 0;
-}
-
-static inline int leds_get_value(unsigned led)
-{
- gpio_reg_t *reg;
- u32 t, m;
-
- reg = led_table[led].reg;
-
- t = GPIO_READ(reg);
- m = (t >> led_table[led].mode_shift) & LED_MODE_MASK;
- if (m == LED_MODE_INPUT)
- return (t >> led_table[led].iv_shift) & 1;
-
- if (m == LED_MODE_OUT_LOW)
- return 0;
-
- return 1;
-}
-
-static inline void leds_set_value(unsigned led, int value)
-{
- gpio_reg_t *reg;
- u32 s,t;
-
- reg = led_table[led].reg;
- s = led_table[led].mode_shift;
-
- t = GPIO_READ(reg);
- t &= ~(LED_MODE_MASK << s);
- if (value)
- t |= (LED_MODE_OUT_HIGH << s);
- else
- t |= (LED_MODE_OUT_LOW << s);
-
- GPIO_WRITE(t,reg);
-}
-
-/*
- * Main GPIO support routines
- */
-int adm5120_gpio_direction_input(unsigned gpio)
-{
- if (gpio_is_invalid(gpio))
- return -EINVAL;
-
- if (gpio < ADM5120_GPIO_P0L0)
- return pins_direction_input(gpio);
-
- gpio -= ADM5120_GPIO_P0L0;
- return leds_direction_input(gpio);
-}
-
-int adm5120_gpio_direction_output(unsigned gpio, int value)
-{
- if (gpio_is_invalid(gpio))
- return -EINVAL;
-
- if (gpio < ADM5120_GPIO_P0L0)
- return pins_direction_output(gpio, value);
-
- gpio -= ADM5120_GPIO_P0L0;
- return leds_direction_output(gpio, value);
-}
-
-int adm5120_gpio_get_value(unsigned gpio)
-{
- if (gpio < ADM5120_GPIO_P0L0)
- return pins_get_value(gpio);
-
- gpio -= ADM5120_GPIO_P0L0;
- return leds_get_value(gpio);
-}
-
-void adm5120_gpio_set_value(unsigned gpio, int value)
-{
- if (gpio < ADM5120_GPIO_P0L0) {
- pins_set_value(gpio, value);
- return;
- }
-
- gpio -= ADM5120_GPIO_P0L0;
- leds_set_value(gpio, value);
-}
-
-int adm5120_gpio_request(unsigned gpio, const char *label)
-{
- if (gpio_is_invalid(gpio))
- return -EINVAL;
-
- if (gpio_is_used(gpio))
- return -EBUSY;
-
- adm5120_gpio_map[gpio].flags |= GPIO_FLAG_USED;
- adm5120_gpio_map[gpio].label = label;
-
- return 0;
-}
-
-void adm5120_gpio_free(unsigned gpio)
-{
- if (gpio_is_invalid(gpio))
- return;
-
- adm5120_gpio_map[gpio].flags &= ~GPIO_FLAG_USED;
- adm5120_gpio_map[gpio].label = NULL;
-}
-
-int adm5120_gpio_to_irq(unsigned gpio)
-{
- /* FIXME: not yet implemented */
- return -EINVAL;
-}
-
-int adm5120_irq_to_gpio(unsigned irq)
-{
- /* FIXME: not yet implemented */
- return -EINVAL;
-}
-
-static int __init adm5120_gpio_init(void)
-{
- int i;
-
- if (adm5120_package_pqfp()) {
- /* GPIO pins 4-7 are unavailable in ADM5120P */
- for (i=ADM5120_GPIO_PIN4; i<=ADM5120_GPIO_PIN7; i++)
- adm5120_gpio_map[i].flags &= ~GPIO_FLAG_VALID;
- }
-
- return 0;
-}
-
-subsys_initcall(adm5120_gpio_init);
-
-EXPORT_SYMBOL(adm5120_gpio_direction_output);
-EXPORT_SYMBOL(adm5120_gpio_direction_input);
-EXPORT_SYMBOL(adm5120_gpio_get_value);
-EXPORT_SYMBOL(adm5120_gpio_set_value);
-EXPORT_SYMBOL(adm5120_gpio_request);
-EXPORT_SYMBOL(adm5120_gpio_free);
-EXPORT_SYMBOL(adm5120_gpio_to_irq);
-EXPORT_SYMBOL(adm5120_irq_to_gpio);
#include <asm-generic/gpio.h> /* cansleep wrappers */
-#endif /* _ADM5120_GPIO_H_ */
-/*
- * $Id$
- *
- * ADM5120 GPIO wrappers for arch-neutral GPIO calls
- *
- * Copyright (C) 2007 OpenWrt.org
- * Copyright (C) 2007 Gabor Juhos <juhosg@freemail.hu>
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the
- * Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
- * Boston, MA 02110-1301, USA.
- *
- */
-
-#ifndef _ADM5120_GPIO_H_
-#define _ADM5120_GPIO_H_
-
-#define ADM5120_GPIO_PIN0 0
-#define ADM5120_GPIO_PIN1 1
-#define ADM5120_GPIO_PIN2 2
-#define ADM5120_GPIO_PIN3 3
-#define ADM5120_GPIO_PIN4 4
-#define ADM5120_GPIO_PIN5 5
-#define ADM5120_GPIO_PIN6 6
-#define ADM5120_GPIO_PIN7 7
-#define ADM5120_GPIO_P0L0 8
-#define ADM5120_GPIO_P0L1 9
-#define ADM5120_GPIO_P0L2 10
-#define ADM5120_GPIO_P1L0 11
-#define ADM5120_GPIO_P1L1 12
-#define ADM5120_GPIO_P1L2 13
-#define ADM5120_GPIO_P2L0 14
-#define ADM5120_GPIO_P2L1 15
-#define ADM5120_GPIO_P2L2 16
-#define ADM5120_GPIO_P3L0 17
-#define ADM5120_GPIO_P3L1 18
-#define ADM5120_GPIO_P3L2 19
-#define ADM5120_GPIO_P4L0 20
-#define ADM5120_GPIO_P4L1 21
-#define ADM5120_GPIO_P4L2 22
-#define ADM5120_GPIO_MAX 22
-#define ADM5120_GPIO_COUNT ADM5120_GPIO_MAX+1
-
-extern int adm5120_gpio_direction_input(unsigned gpio);
-extern int adm5120_gpio_direction_output(unsigned gpio, int value);
-extern int adm5120_gpio_get_value(unsigned gpio);
-extern void adm5120_gpio_set_value(unsigned gpio, int value);
-extern int adm5120_gpio_request(unsigned gpio, const char *label);
-extern void adm5120_gpio_free(unsigned gpio);
-extern int adm5120_gpio_to_irq(unsigned gpio);
-extern int adm5120_irq_to_gpio(unsigned irq);
-
-/*
- * Wrappers for the generic GPIO layer
- */
-static inline int gpio_direction_input(unsigned gpio)
-{
- return adm5120_gpio_direction_input(gpio);
-}
-
-static inline int gpio_direction_output(unsigned gpio, int value)
-{
- return adm5120_gpio_direction_output(gpio,value);
-}
-
-static inline int gpio_get_value(unsigned gpio)
-{
- return adm5120_gpio_get_value(gpio);
-}
-
-static inline void gpio_set_value(unsigned gpio, int value)
-{
- adm5120_gpio_set_value(gpio, value);
-}
-
-static inline int gpio_request(unsigned gpio, const char *label)
-{
- return adm5120_gpio_request(gpio, label);
-}
-
-static inline void gpio_free(unsigned gpio)
-{
- adm5120_gpio_free(gpio);
-}
-
-static inline int gpio_to_irq(unsigned gpio)
-{
- return adm5120_gpio_to_irq(gpio);
-}
-
-static inline int irq_to_gpio(unsigned irq)
-{
- return adm5120_irq_to_gpio(irq);
-}
-
-#include <asm-generic/gpio.h> /* cansleep wrappers */
-
-#endif /* _ADM5120_GPIO_H_ */
+#endif
projects / openwrt / svn-archive / archive.git / commitdiff