Blackfin arch: Merge GPIO/Peripheral Resource Allocation back into a single file

Signed-off-by: Michael Hennerich <michale.hennerich@analog.com>
Signed-off-by: Bryan Wu <bryan.wu@analog.com>

2 files changed, 1 insertions, 393 deletions

diff --git a/arch/blackfin/mach-bf548/Makefile b/arch/blackfin/mach-bf548/Makefile
index 060ad78ebf1..7e7c9c8ac5b 100644
--- a/arch/blackfin/mach-bf548/Makefile
+++ b/arch/blackfin/mach-bf548/Makefile
@@ -4,6 +4,6 @@
 
 extra-y := head.o
 
-obj-y := ints-priority.o dma.o gpio.o
+obj-y := ints-priority.o dma.o
 
 obj-$(CONFIG_CPU_FREQ)   += cpu.o
diff --git a/arch/blackfin/mach-bf548/gpio.c b/arch/blackfin/mach-bf548/gpio.c
deleted file mode 100644
index 390dd8c1243..00000000000
--- a/arch/blackfin/mach-bf548/gpio.c
+++ /dev/null
@@ -1,392 +0,0 @@
-/*
- * File:         arch/blackfin/mach-bf548/gpio.c
- * Based on:
- * Author:       Michael Hennerich (hennerich@blackfin.uclinux.org)
- *
- * Created:
- * Description:  GPIO Abstraction Layer
- *
- * Modified:
- *               Copyright 2007 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
- */
-
-#include <linux/module.h>
-#include <linux/err.h>
-#include <asm/blackfin.h>
-#include <asm/gpio.h>
-#include <asm/portmux.h>
-#include <linux/irq.h>
-
-static struct gpio_port_t *gpio_array[gpio_bank(MAX_BLACKFIN_GPIOS)] = {
-	(struct gpio_port_t *)PORTA_FER,
-	(struct gpio_port_t *)PORTB_FER,
-	(struct gpio_port_t *)PORTC_FER,
-	(struct gpio_port_t *)PORTD_FER,
-	(struct gpio_port_t *)PORTE_FER,
-	(struct gpio_port_t *)PORTF_FER,
-	(struct gpio_port_t *)PORTG_FER,
-	(struct gpio_port_t *)PORTH_FER,
-	(struct gpio_port_t *)PORTI_FER,
-	(struct gpio_port_t *)PORTJ_FER,
-};
-
-static unsigned short reserved_gpio_map[gpio_bank(MAX_BLACKFIN_GPIOS)];
-static unsigned short reserved_peri_map[gpio_bank(MAX_BLACKFIN_GPIOS)];
-
-#define MAX_RESOURCES 		256
-#define RESOURCE_LABEL_SIZE 	16
-
-struct str_ident {
-	char name[RESOURCE_LABEL_SIZE];
-} *str_ident;
-
-inline int check_gpio(unsigned short gpio)
-{
-	if (gpio == GPIO_PB15 || gpio == GPIO_PC14 || gpio == GPIO_PC15
-	    || gpio == GPIO_PH14 || gpio == GPIO_PH15
-	    || gpio == GPIO_PJ14 || gpio == GPIO_PJ15
-	    || gpio > MAX_BLACKFIN_GPIOS)
-		return -EINVAL;
-	return 0;
-}
-
-inline void portmux_setup(unsigned short portno, unsigned short function)
-{
-	u32 pmux;
-
-	pmux = gpio_array[gpio_bank(portno)]->port_mux;
-
-	pmux &= ~(0x3 << (2 * gpio_sub_n(portno)));
-	pmux |= (function & 0x3) << (2 * gpio_sub_n(portno));
-
-	gpio_array[gpio_bank(portno)]->port_mux = pmux;
-}
-
-inline u16 get_portmux(unsigned short portno)
-{
-	u32 pmux;
-
-	pmux = gpio_array[gpio_bank(portno)]->port_mux;
-
-	return (pmux >> (2 * gpio_sub_n(portno)) & 0x3);
-}
-
-static void port_setup(unsigned short gpio, unsigned short usage)
-{
-	if (usage == GPIO_USAGE) {
-		gpio_array[gpio_bank(gpio)]->port_fer &= ~gpio_bit(gpio);
-	} else
-		gpio_array[gpio_bank(gpio)]->port_fer |= gpio_bit(gpio);
-	SSYNC();
-}
-
-static int __init bfin_gpio_init(void)
-{
-
-	str_ident = kcalloc(MAX_RESOURCES,
-				 sizeof(struct str_ident), GFP_KERNEL);
-	if (str_ident == NULL)
-		return -ENOMEM;
-
-	memset(str_ident, 0, MAX_RESOURCES * sizeof(struct str_ident));
-
-	printk(KERN_INFO "Blackfin GPIO Controller\n");
-
-	return 0;
-}
-
-arch_initcall(bfin_gpio_init);
-
-static void set_label(unsigned short ident, const char *label)
-{
-
-	if (label && str_ident) {
-		strncpy(str_ident[ident].name, label,
-			 RESOURCE_LABEL_SIZE);
-		str_ident[ident].name[RESOURCE_LABEL_SIZE - 1] = 0;
-	}
-}
-
-static char *get_label(unsigned short ident)
-{
-	if (!str_ident)
-		return "UNKNOWN";
-
-	return (*str_ident[ident].name ? str_ident[ident].name : "UNKNOWN");
-}
-
-static int cmp_label(unsigned short ident, const char *label)
-{
-	if (label && str_ident)
-		return strncmp(str_ident[ident].name,
-				 label, strlen(label));
-	else
-		return -EINVAL;
-}
-
-int peripheral_request(unsigned short per, const char *label)
-{
-	unsigned long flags;
-	unsigned short ident = P_IDENT(per);
-
-	/*
-	 * Don't cares are pins with only one dedicated function
-	 */
-
-	if (per & P_DONTCARE)
-		return 0;
-
-	if (!(per & P_DEFINED))
-		return -ENODEV;
-
-	if (check_gpio(ident) < 0)
-		return -EINVAL;
-
-	local_irq_save(flags);
-
-	if (unlikely(reserved_gpio_map[gpio_bank(ident)] & gpio_bit(ident))) {
-		printk(KERN_ERR
-		       "%s: Peripheral %d is already reserved as GPIO by %s !\n",
-		       __FUNCTION__, ident, get_label(ident));
-		dump_stack();
-		local_irq_restore(flags);
-		return -EBUSY;
-	}
-
-	if (unlikely(reserved_peri_map[gpio_bank(ident)] & gpio_bit(ident))) {
-
-		u16 funct = get_portmux(ident);
-
-	/*
-	 * Pin functions like AMC address strobes my
-	 * be requested and used by several drivers
-	 */
-
-		if (!((per & P_MAYSHARE) && (funct == P_FUNCT2MUX(per)))) {
-
-		/*
-		 * Allow that the identical pin function can
-		 * be requested from the same driver twice
-		 */
-
-		if (cmp_label(ident, label) == 0)
-			goto anyway;
-
-			printk(KERN_ERR
-			       "%s: Peripheral %d function %d is already reserved by %s !\n",
-			       __FUNCTION__, ident, P_FUNCT2MUX(per), get_label(ident));
-			dump_stack();
-			local_irq_restore(flags);
-			return -EBUSY;
-		}
-	}
-
-anyway:
-	reserved_peri_map[gpio_bank(ident)] |= gpio_bit(ident);
-
-	portmux_setup(ident, P_FUNCT2MUX(per));
-	port_setup(ident, PERIPHERAL_USAGE);
-
-	local_irq_restore(flags);
-	set_label(ident, label);
-
-	return 0;
-}
-EXPORT_SYMBOL(peripheral_request);
-
-int peripheral_request_list(unsigned short per[], const char *label)
-{
-	u16 cnt;
-	int ret;
-
-	for (cnt = 0; per[cnt] != 0; cnt++) {
-
-		ret = peripheral_request(per[cnt], label);
-
-		if (ret < 0) {
-			for ( ; cnt > 0; cnt--) {
-				peripheral_free(per[cnt - 1]);
-			}
-		return ret;
-		}
-	}
-
-
-	return 0;
-}
-EXPORT_SYMBOL(peripheral_request_list);
-
-void peripheral_free(unsigned short per)
-{
-	unsigned long flags;
-	unsigned short ident = P_IDENT(per);
-
-	if (per & P_DONTCARE)
-		return;
-
-	if (!(per & P_DEFINED))
-		return;
-
-	if (check_gpio(ident) < 0)
-		return;
-
-	local_irq_save(flags);
-
-	if (unlikely(!(reserved_peri_map[gpio_bank(ident)] & gpio_bit(ident)))) {
-		local_irq_restore(flags);
-		return;
-	}
-
-	if (!(per & P_MAYSHARE)) {
-		port_setup(ident, GPIO_USAGE);
-	}
-
-	reserved_peri_map[gpio_bank(ident)] &= ~gpio_bit(ident);
-
-	local_irq_restore(flags);
-}
-EXPORT_SYMBOL(peripheral_free);
-
-void peripheral_free_list(unsigned short per[])
-{
-	u16 cnt;
-
-	for (cnt = 0; per[cnt] != 0; cnt++) {
-		peripheral_free(per[cnt]);
-	}
-
-}
-EXPORT_SYMBOL(peripheral_free_list);
-
-/***********************************************************
-*
-* FUNCTIONS: Blackfin GPIO Driver
-*
-* INPUTS/OUTPUTS:
-* gpio - GPIO Number between 0 and MAX_BLACKFIN_GPIOS
-*
-*
-* DESCRIPTION: Blackfin GPIO Driver API
-*
-* CAUTION:
-*************************************************************
-* MODIFICATION HISTORY :
-**************************************************************/
-
-int gpio_request(unsigned short gpio, const char *label)
-{
-	unsigned long flags;
-
-	if (check_gpio(gpio) < 0)
-		return -EINVAL;
-
-	local_irq_save(flags);
-
-	if (unlikely(reserved_gpio_map[gpio_bank(gpio)] & gpio_bit(gpio))) {
-		printk(KERN_ERR "bfin-gpio: GPIO %d is already reserved by %s !\n",
-			 gpio, get_label(gpio));
-		dump_stack();
-		local_irq_restore(flags);
-		return -EBUSY;
-	}
-
-	if (unlikely(reserved_peri_map[gpio_bank(gpio)] & gpio_bit(gpio))) {
-		printk(KERN_ERR
-		       "bfin-gpio: GPIO %d is already reserved as Peripheral by %s !\n",
-		       gpio, get_label(gpio));
-		dump_stack();
-		local_irq_restore(flags);
-		return -EBUSY;
-	}
-
-	reserved_gpio_map[gpio_bank(gpio)] |= gpio_bit(gpio);
-
-	local_irq_restore(flags);
-
-	port_setup(gpio, GPIO_USAGE);
-	set_label(gpio, label);
-
-	return 0;
-}
-EXPORT_SYMBOL(gpio_request);
-
-void gpio_free(unsigned short gpio)
-{
-	unsigned long flags;
-
-	if (check_gpio(gpio) < 0)
-		return;
-
-	local_irq_save(flags);
-
-	if (unlikely(!(reserved_gpio_map[gpio_bank(gpio)] & gpio_bit(gpio)))) {
-		printk(KERN_ERR "bfin-gpio: GPIO %d wasn't reserved!\n", gpio);
-		dump_stack();
-		local_irq_restore(flags);
-		return;
-	}
-
-	reserved_gpio_map[gpio_bank(gpio)] &= ~gpio_bit(gpio);
-
-	local_irq_restore(flags);
-}
-EXPORT_SYMBOL(gpio_free);
-
-void gpio_direction_input(unsigned short gpio)
-{
-	unsigned long flags;
-
-	BUG_ON(!(reserved_gpio_map[gpio_bank(gpio)] & gpio_bit(gpio)));
-
-	local_irq_save(flags);
-	gpio_array[gpio_bank(gpio)]->port_dir_clear = gpio_bit(gpio);
-	gpio_array[gpio_bank(gpio)]->port_inen |= gpio_bit(gpio);
-	local_irq_restore(flags);
-}
-EXPORT_SYMBOL(gpio_direction_input);
-
-void gpio_direction_output(unsigned short gpio)
-{
-	unsigned long flags;
-
-	BUG_ON(!(reserved_gpio_map[gpio_bank(gpio)] & gpio_bit(gpio)));
-
-	local_irq_save(flags);
-	gpio_array[gpio_bank(gpio)]->port_inen &= ~gpio_bit(gpio);
-	gpio_array[gpio_bank(gpio)]->port_dir_set = gpio_bit(gpio);
-	local_irq_restore(flags);
-}
-EXPORT_SYMBOL(gpio_direction_output);
-
-void gpio_set_value(unsigned short gpio, unsigned short arg)
-{
-	if (arg)
-		gpio_array[gpio_bank(gpio)]->port_set = gpio_bit(gpio);
-	else
-		gpio_array[gpio_bank(gpio)]->port_clear = gpio_bit(gpio);
-
-}
-EXPORT_SYMBOL(gpio_set_value);
-
-unsigned short gpio_get_value(unsigned short gpio)
-{
-	return (1 & (gpio_array[gpio_bank(gpio)]->port_data >> gpio_sub_n(gpio)));
-}
-EXPORT_SYMBOL(gpio_get_value);