diff options
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/blackfin/kernel/Makefile | 4 | ||||
| -rw-r--r-- | arch/blackfin/kernel/bfin_gpio.c | 225 | ||||
| -rw-r--r-- | arch/blackfin/mach-bf548/Makefile | 2 | ||||
| -rw-r--r-- | arch/blackfin/mach-bf548/gpio.c | 392 |
4 files changed, 216 insertions, 407 deletions
diff --git a/arch/blackfin/kernel/Makefile b/arch/blackfin/kernel/Makefile index ae0a2203c3da..243883ec6de1 100644 --- a/arch/blackfin/kernel/Makefile +++ b/arch/blackfin/kernel/Makefile @@ -7,10 +7,8 @@ extra-y := init_task.o vmlinux.lds obj-y := \ entry.o process.o bfin_ksyms.o ptrace.o setup.o signal.o \ sys_bfin.o time.o traps.o irqchip.o dma-mapping.o flat.o \ - fixed_code.o cplbinit.o cacheinit.o reboot.o + fixed_code.o cplbinit.o cacheinit.o reboot.o bfin_gpio.o -obj-$(CONFIG_BF53x) += bfin_gpio.o -obj-$(CONFIG_BF561) += bfin_gpio.o obj-$(CONFIG_MODULES) += module.o obj-$(CONFIG_BFIN_DMA_5XX) += bfin_dma_5xx.o obj-$(CONFIG_DUAL_CORE_TEST_MODULE) += dualcore_test.o diff --git a/arch/blackfin/kernel/bfin_gpio.c b/arch/blackfin/kernel/bfin_gpio.c index 0d1e87b9c93d..78438d88d22a 100644 --- a/arch/blackfin/kernel/bfin_gpio.c +++ b/arch/blackfin/kernel/bfin_gpio.c @@ -7,7 +7,7 @@ * Description: GPIO Abstraction Layer * * Modified: - * Copyright 2006 Analog Devices Inc. + * Copyright 2007 Analog Devices Inc. * * Bugs: Enter bugs at http://blackfin.uclinux.org/ * @@ -28,9 +28,9 @@ */ /* -* Number BF537/6/4 BF561 BF533/2/1 +* Number BF537/6/4 BF561 BF533/2/1 BF549/8/4/2 * -* GPIO_0 PF0 PF0 PF0 +* GPIO_0 PF0 PF0 PF0 PA0...PJ13 * GPIO_1 PF1 PF1 PF1 * GPIO_2 PF2 PF2 PF2 * GPIO_3 PF3 PF3 PF3 @@ -117,6 +117,21 @@ static struct gpio_port_t *gpio_bankb[gpio_bank(MAX_BLACKFIN_GPIOS)] = { }; #endif +#ifdef BF548_FAMILY +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, +}; +#endif + static unsigned short reserved_gpio_map[gpio_bank(MAX_BLACKFIN_GPIOS)]; static unsigned short reserved_peri_map[gpio_bank(MAX_BLACKFIN_GPIOS + 16)]; @@ -147,12 +162,24 @@ static unsigned int sic_iwr_irqs[gpio_bank(MAX_BLACKFIN_GPIOS)] = {IRQ_PROG0_INT #endif /* CONFIG_PM */ +#if defined(BF548_FAMILY) +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; +} +#else inline int check_gpio(unsigned short gpio) { if (gpio >= MAX_BLACKFIN_GPIOS) return -EINVAL; return 0; } +#endif static void set_label(unsigned short ident, const char *label) { @@ -185,19 +212,27 @@ static int cmp_label(unsigned short ident, const char *label) static void port_setup(unsigned short gpio, unsigned short usage) { if (!check_gpio(gpio)) { - if (usage == GPIO_USAGE) { + if (usage == GPIO_USAGE) *port_fer[gpio_bank(gpio)] &= ~gpio_bit(gpio); - } else + else *port_fer[gpio_bank(gpio)] |= gpio_bit(gpio); SSYNC(); } } +#elif defined(BF548_FAMILY) +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(); +} #else # define port_setup(...) do { } while (0) #endif #ifdef BF537_FAMILY - static struct { unsigned short res; unsigned short offset; @@ -268,11 +303,32 @@ static void portmux_setup(unsigned short per, unsigned short function) } } } +#elif defined(BF548_FAMILY) +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); +} #else # define portmux_setup(...) do { } while (0) #endif +#ifndef BF548_FAMILY static void default_gpio(unsigned short gpio) { unsigned short bank, bitmask; @@ -289,6 +345,9 @@ static void default_gpio(unsigned short gpio) gpio_bankb[bank]->both &= ~bitmask; gpio_bankb[bank]->edge &= ~bitmask; } +#else +# define default_gpio(...) do { } while (0) +#endif static int __init bfin_gpio_init(void) { @@ -307,6 +366,7 @@ static int __init bfin_gpio_init(void) arch_initcall(bfin_gpio_init); +#ifndef BF548_FAMILY /*********************************************************** * * FUNCTIONS: Blackfin General Purpose Ports Access Functions @@ -658,9 +718,95 @@ void gpio_pm_restore(void) } #endif +#endif /* BF548_FAMILY */ +/*********************************************************** +* +* FUNCTIONS: Blackfin Peripheral Resource Allocation +* and PortMux Setup +* +* INPUTS/OUTPUTS: +* per Peripheral Identifier +* label String +* +* DESCRIPTION: Blackfin Peripheral Resource Allocation and Setup API +* +* CAUTION: +************************************************************* +* MODIFICATION HISTORY : +**************************************************************/ + +#ifdef BF548_FAMILY +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); +#else int peripheral_request(unsigned short per, const char *label) { @@ -722,8 +868,6 @@ int peripheral_request(unsigned short per, const char *label) } anyway: - - portmux_setup(per, P_FUNCT2MUX(per)); port_setup(ident, PERIPHERAL_USAGE); @@ -735,6 +879,7 @@ anyway: return 0; } EXPORT_SYMBOL(peripheral_request); +#endif int peripheral_request_list(unsigned short per[], const char *label) { @@ -805,8 +950,8 @@ EXPORT_SYMBOL(peripheral_free_list); * FUNCTIONS: Blackfin GPIO Driver * * INPUTS/OUTPUTS: -* gpio - GPIO Number between 0 and MAX_BLACKFIN_GPIOS -* +* gpio PIO Number between 0 and MAX_BLACKFIN_GPIOS +* label String * * DESCRIPTION: Blackfin GPIO Driver API * @@ -825,16 +970,27 @@ int gpio_request(unsigned short gpio, const char *label) 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!\n", 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; } @@ -864,6 +1020,51 @@ void gpio_free(unsigned short gpio) } EXPORT_SYMBOL(gpio_free); +#ifdef BF548_FAMILY +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); + +#else + void gpio_direction_input(unsigned short gpio) { unsigned long flags; @@ -908,3 +1109,5 @@ void bfin_gpio_reset_spi0_ssel1(void) gpio_bankb[gpio_bank(gpio)]->data_set = gpio_bit(gpio); udelay(1); } + +#endif /*BF548_FAMILY */ diff --git a/arch/blackfin/mach-bf548/Makefile b/arch/blackfin/mach-bf548/Makefile index 060ad78ebf1d..7e7c9c8ac5b2 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 390dd8c12430..000000000000 --- 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); |