/*
- * File: arch/blackfin/kernel/bfin_gpio.c
- * Based on:
- * Author: Michael Hennerich (hennerich@blackfin.uclinux.org)
+ * GPIO Abstraction Layer
*
- * Created:
- * Description: GPIO Abstraction Layer
+ * Copyright 2006-2009 Analog Devices Inc.
*
- * Modified:
- * Copyright 2008 Analog Devices Inc.
- *
- * Bugs: Enter bugs at http://blackfin.uclinux.org/
- *
- * 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, see the file COPYING, or write
- * to the Free Software Foundation, Inc.,
- * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+ * Licensed under the GPL-2 or later
*/
#include <linux/delay.h>
static struct gpio_port_t * const gpio_array[] = {
#if defined(BF533_FAMILY) || defined(BF538_FAMILY)
(struct gpio_port_t *) FIO_FLAG_D,
-#elif defined(BF527_FAMILY) || defined(BF537_FAMILY) || defined(BF518_FAMILY)
+#elif defined(CONFIG_BF52x) || defined(BF537_FAMILY) || defined(CONFIG_BF51x)
(struct gpio_port_t *) PORTFIO,
(struct gpio_port_t *) PORTGIO,
(struct gpio_port_t *) PORTHIO,
(struct gpio_port_t *) FIO0_FLAG_D,
(struct gpio_port_t *) FIO1_FLAG_D,
(struct gpio_port_t *) FIO2_FLAG_D,
-#elif defined(BF548_FAMILY)
+#elif defined(CONFIG_BF54x)
(struct gpio_port_t *)PORTA_FER,
(struct gpio_port_t *)PORTB_FER,
(struct gpio_port_t *)PORTC_FER,
#endif
};
-#if defined(BF527_FAMILY) || defined(BF537_FAMILY) || defined(BF518_FAMILY)
+#if defined(CONFIG_BF52x) || defined(BF537_FAMILY) || defined(CONFIG_BF51x)
static unsigned short * const port_fer[] = {
(unsigned short *) PORTF_FER,
(unsigned short *) PORTG_FER,
static const
u8 pmux_offset[][16] = {
-# if defined(BF527_FAMILY)
+# if defined(CONFIG_BF52x)
{ 0, 0, 0, 0, 0, 0, 0, 0, 2, 2, 4, 6, 8, 8, 10, 10 }, /* PORTF */
{ 0, 0, 0, 0, 0, 2, 2, 4, 4, 6, 8, 10, 10, 10, 12, 12 }, /* PORTG */
{ 0, 0, 0, 0, 0, 0, 0, 0, 2, 4, 4, 4, 4, 4, 4, 4 }, /* PORTH */
-# elif defined(BF518_FAMILY)
+# elif defined(CONFIG_BF51x)
{ 0, 2, 2, 2, 2, 2, 2, 4, 6, 6, 6, 8, 8, 8, 8, 10 }, /* PORTF */
{ 0, 0, 0, 2, 4, 6, 6, 6, 8, 10, 10, 12, 14, 14, 14, 14 }, /* PORTG */
{ 0, 0, 0, 0, 2, 2, 4, 6, 10, 10, 10, 10, 10, 10, 10, 10 }, /* PORTH */
inline int check_gpio(unsigned gpio)
{
-#if defined(BF548_FAMILY)
+#if defined(CONFIG_BF54x)
if (gpio == GPIO_PB15 || gpio == GPIO_PC14 || gpio == GPIO_PC15
|| gpio == GPIO_PH14 || gpio == GPIO_PH15
|| gpio == GPIO_PJ14 || gpio == GPIO_PJ15)
if (check_gpio(gpio))
return;
-#if defined(BF527_FAMILY) || defined(BF537_FAMILY) || defined(BF518_FAMILY)
+#if defined(CONFIG_BF52x) || defined(BF537_FAMILY) || defined(CONFIG_BF51x)
if (usage == GPIO_USAGE)
*port_fer[gpio_bank(gpio)] &= ~gpio_bit(gpio);
else
*port_fer[gpio_bank(gpio)] |= gpio_bit(gpio);
SSYNC();
-#elif defined(BF548_FAMILY)
+#elif defined(CONFIG_BF54x)
if (usage == GPIO_USAGE)
gpio_array[gpio_bank(gpio)]->port_fer &= ~gpio_bit(gpio);
else
}
}
}
-#elif defined(BF548_FAMILY)
+#elif defined(CONFIG_BF54x)
inline void portmux_setup(unsigned short per)
{
u32 pmux;
return (pmux >> (2 * gpio_sub_n(ident)) & 0x3);
}
-#elif defined(BF527_FAMILY) || defined(BF518_FAMILY)
+#elif defined(CONFIG_BF52x) || defined(CONFIG_BF51x)
inline void portmux_setup(unsigned short per)
{
u16 pmux, ident = P_IDENT(per), function = P_FUNCT2MUX(per);
# define portmux_setup(...) do { } while (0)
#endif
-static int __init bfin_gpio_init(void)
-{
- printk(KERN_INFO "Blackfin GPIO Controller\n");
-
- return 0;
-}
-arch_initcall(bfin_gpio_init);
-
-
-#ifndef BF548_FAMILY
+#ifndef CONFIG_BF54x
/***********************************************************
*
* FUNCTIONS: Blackfin General Purpose Ports Access Functions
IRQ_PROG_INTB, IRQ_PORTG_INTB, IRQ_MAC_TX
#elif defined(BF538_FAMILY)
IRQ_PORTF_INTB
-#elif defined(BF527_FAMILY) || defined(BF518_FAMILY)
+#elif defined(CONFIG_BF52x) || defined(CONFIG_BF51x)
IRQ_PORTF_INTB, IRQ_PORTG_INTB, IRQ_PORTH_INTB
#elif defined(BF561_FAMILY)
IRQ_PROG0_INTB, IRQ_PROG1_INTB, IRQ_PROG2_INTB
gpio_array[bank]->maskb = 0;
if (mask) {
-#if defined(BF527_FAMILY) || defined(BF537_FAMILY) || defined(BF518_FAMILY)
+#if defined(CONFIG_BF52x) || defined(BF537_FAMILY) || defined(CONFIG_BF51x)
gpio_bank_saved[bank].fer = *port_fer[bank];
#endif
gpio_bank_saved[bank].inen = gpio_array[bank]->inen;
bank = gpio_bank(i);
if (mask) {
-#if defined(BF527_FAMILY) || defined(BF537_FAMILY) || defined(BF518_FAMILY)
+#if defined(CONFIG_BF52x) || defined(BF537_FAMILY) || defined(CONFIG_BF51x)
*port_fer[bank] = gpio_bank_saved[bank].fer;
#endif
gpio_array[bank]->inen = gpio_bank_saved[bank].inen;
for (i = 0; i < MAX_BLACKFIN_GPIOS; i += GPIO_BANKSIZE) {
bank = gpio_bank(i);
-#if defined(BF527_FAMILY) || defined(BF537_FAMILY) || defined(BF518_FAMILY)
+#if defined(CONFIG_BF52x) || defined(BF537_FAMILY) || defined(CONFIG_BF51x)
gpio_bank_saved[bank].fer = *port_fer[bank];
-#if defined(BF527_FAMILY) || defined(BF518_FAMILY)
+#if defined(CONFIG_BF52x) || defined(CONFIG_BF51x)
gpio_bank_saved[bank].mux = *port_mux[bank];
#else
if (bank == 0)
for (i = 0; i < MAX_BLACKFIN_GPIOS; i += GPIO_BANKSIZE) {
bank = gpio_bank(i);
-#if defined(BF527_FAMILY) || defined(BF537_FAMILY) || defined(BF518_FAMILY)
-#if defined(BF527_FAMILY) || defined(BF518_FAMILY)
+#if defined(CONFIG_BF52x) || defined(BF537_FAMILY) || defined(CONFIG_BF51x)
+#if defined(CONFIG_BF52x) || defined(CONFIG_BF51x)
*port_mux[bank] = gpio_bank_saved[bank].mux;
#else
if (bank == 0)
*port_fer[bank] = gpio_bank_saved[bank].fer;
#endif
gpio_array[bank]->inen = gpio_bank_saved[bank].inen;
+ gpio_array[bank]->data_set = gpio_bank_saved[bank].data
+ & gpio_bank_saved[bank].dir;
gpio_array[bank]->dir = gpio_bank_saved[bank].dir;
gpio_array[bank]->polar = gpio_bank_saved[bank].polar;
gpio_array[bank]->edge = gpio_bank_saved[bank].edge;
gpio_array[bank]->both = gpio_bank_saved[bank].both;
-
- gpio_array[bank]->data_set = gpio_bank_saved[bank].data
- | gpio_bank_saved[bank].dir;
-
gpio_array[bank]->maska = gpio_bank_saved[bank].maska;
}
AWA_DUMMY_READ(maska);
#endif
-#else /* BF548_FAMILY */
+#else /* CONFIG_BF54x */
#ifdef CONFIG_PM
u32 bfin_pm_standby_setup(void)
gpio_bank_saved[bank].fer = gpio_array[bank]->port_fer;
gpio_bank_saved[bank].mux = gpio_array[bank]->port_mux;
gpio_bank_saved[bank].data = gpio_array[bank]->data;
- gpio_bank_saved[bank].data = gpio_array[bank]->data;
gpio_bank_saved[bank].inen = gpio_array[bank]->inen;
gpio_bank_saved[bank].dir = gpio_array[bank]->dir_set;
}
}
EXPORT_SYMBOL(get_gpio_dir);
-#endif /* BF548_FAMILY */
+#endif /* CONFIG_BF54x */
/***********************************************************
*
*/
if (unlikely(!check_gpio(ident) &&
reserved_gpio_map[gpio_bank(ident)] & gpio_bit(ident))) {
- dump_stack();
+ if (system_state == SYSTEM_BOOTING)
+ dump_stack();
printk(KERN_ERR
"%s: Peripheral %d is already reserved as GPIO by %s !\n",
__func__, ident, get_label(ident));
* be requested and used by several drivers
*/
-#ifdef BF548_FAMILY
+#ifdef CONFIG_BF54x
if (!((per & P_MAYSHARE) && get_portmux(per) == P_FUNCT2MUX(per))) {
#else
if (!(per & P_MAYSHARE)) {
if (cmp_label(ident, label) == 0)
goto anyway;
- dump_stack();
+ if (system_state == SYSTEM_BOOTING)
+ dump_stack();
printk(KERN_ERR
"%s: Peripheral %d function %d is already reserved by %s !\n",
__func__, ident, P_FUNCT2MUX(per), get_label(ident));
}
if (unlikely(reserved_gpio_map[gpio_bank(gpio)] & gpio_bit(gpio))) {
- dump_stack();
+ if (system_state == SYSTEM_BOOTING)
+ dump_stack();
printk(KERN_ERR "bfin-gpio: GPIO %d is already reserved by %s !\n",
gpio, get_label(gpio));
local_irq_restore_hw(flags);
return -EBUSY;
}
if (unlikely(reserved_peri_map[gpio_bank(gpio)] & gpio_bit(gpio))) {
- dump_stack();
+ if (system_state == SYSTEM_BOOTING)
+ dump_stack();
printk(KERN_ERR
"bfin-gpio: GPIO %d is already reserved as Peripheral by %s !\n",
gpio, get_label(gpio));
printk(KERN_NOTICE "bfin-gpio: GPIO %d is already reserved as gpio-irq!"
" (Documentation/blackfin/bfin-gpio-notes.txt)\n", gpio);
}
-#ifndef BF548_FAMILY
+#ifndef CONFIG_BF54x
else { /* Reset POLAR setting when acquiring a gpio for the first time */
set_gpio_polar(gpio, 0);
}
local_irq_save_hw(flags);
if (unlikely(!(reserved_gpio_map[gpio_bank(gpio)] & gpio_bit(gpio)))) {
- dump_stack();
+ if (system_state == SYSTEM_BOOTING)
+ dump_stack();
gpio_error(gpio);
local_irq_restore_hw(flags);
return;
local_irq_save_hw(flags);
- if (unlikely(reserved_gpio_irq_map[gpio_bank(gpio)] & gpio_bit(gpio))) {
- dump_stack();
- printk(KERN_ERR
- "bfin-gpio: GPIO %d is already reserved as gpio-irq !\n",
- gpio);
- local_irq_restore_hw(flags);
- return -EBUSY;
- }
if (unlikely(reserved_peri_map[gpio_bank(gpio)] & gpio_bit(gpio))) {
- dump_stack();
+ if (system_state == SYSTEM_BOOTING)
+ dump_stack();
printk(KERN_ERR
"bfin-gpio: GPIO %d is already reserved as Peripheral by %s !\n",
gpio, get_label(gpio));
local_irq_save_hw(flags);
if (unlikely(!(reserved_gpio_irq_map[gpio_bank(gpio)] & gpio_bit(gpio)))) {
- dump_stack();
+ if (system_state == SYSTEM_BOOTING)
+ dump_stack();
gpio_error(gpio);
local_irq_restore_hw(flags);
return;
static inline void __bfin_gpio_direction_input(unsigned gpio)
{
-#ifdef BF548_FAMILY
+#ifdef CONFIG_BF54x
gpio_array[gpio_bank(gpio)]->dir_clear = gpio_bit(gpio);
#else
gpio_array[gpio_bank(gpio)]->dir &= ~gpio_bit(gpio);
void bfin_gpio_irq_prepare(unsigned gpio)
{
-#ifdef BF548_FAMILY
+#ifdef CONFIG_BF54x
unsigned long flags;
#endif
port_setup(gpio, GPIO_USAGE);
-#ifdef BF548_FAMILY
+#ifdef CONFIG_BF54x
local_irq_save_hw(flags);
__bfin_gpio_direction_input(gpio);
local_irq_restore_hw(flags);
gpio_array[gpio_bank(gpio)]->inen &= ~gpio_bit(gpio);
gpio_set_value(gpio, value);
-#ifdef BF548_FAMILY
+#ifdef CONFIG_BF54x
gpio_array[gpio_bank(gpio)]->dir_set = gpio_bit(gpio);
#else
gpio_array[gpio_bank(gpio)]->dir |= gpio_bit(gpio);
int bfin_gpio_get_value(unsigned gpio)
{
-#ifdef BF548_FAMILY
+#ifdef CONFIG_BF54x
return (1 & (gpio_array[gpio_bank(gpio)]->data >> gpio_sub_n(gpio)));
#else
unsigned long flags;