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-rw-r--r--arch/blackfin/cpu/gpio.c841
1 files changed, 0 insertions, 841 deletions
diff --git a/arch/blackfin/cpu/gpio.c b/arch/blackfin/cpu/gpio.c
deleted file mode 100644
index 81b709028f..0000000000
--- a/arch/blackfin/cpu/gpio.c
+++ /dev/null
@@ -1,841 +0,0 @@
-/*
- * ADI GPIO1 Abstraction Layer
- * Support BF50x, BF51x, BF52x, BF53x and BF561 only.
- *
- * Copyright 2006-2010 Analog Devices Inc.
- *
- * Licensed under the GPL-2 or later
- */
-
-#include <common.h>
-#include <linux/errno.h>
-#include <asm/gpio.h>
-#include <asm/portmux.h>
-
-#ifndef CONFIG_ADI_GPIO2
-#if ANOMALY_05000311 || ANOMALY_05000323
-enum {
- AWA_data = SYSCR,
- AWA_data_clear = SYSCR,
- AWA_data_set = SYSCR,
- AWA_toggle = SYSCR,
- AWA_maska = UART_SCR,
- AWA_maska_clear = UART_SCR,
- AWA_maska_set = UART_SCR,
- AWA_maska_toggle = UART_SCR,
- AWA_maskb = UART_GCTL,
- AWA_maskb_clear = UART_GCTL,
- AWA_maskb_set = UART_GCTL,
- AWA_maskb_toggle = UART_GCTL,
- AWA_dir = SPORT1_STAT,
- AWA_polar = SPORT1_STAT,
- AWA_edge = SPORT1_STAT,
- AWA_both = SPORT1_STAT,
-#if ANOMALY_05000311
- AWA_inen = TIMER_ENABLE,
-#elif ANOMALY_05000323
- AWA_inen = DMA1_1_CONFIG,
-#endif
-};
- /* Anomaly Workaround */
-#define AWA_DUMMY_READ(name) bfin_read16(AWA_ ## name)
-#else
-#define AWA_DUMMY_READ(...) do { } while (0)
-#endif
-
-static struct gpio_port_t * const gpio_array[] = {
-#if defined(BF533_FAMILY)
- (struct gpio_port_t *) FIO_FLAG_D,
-#elif defined(CONFIG_BF52x) || defined(BF537_FAMILY) || defined(CONFIG_BF51x) \
- || defined(BF538_FAMILY) || defined(CONFIG_BF50x)
- (struct gpio_port_t *) PORTFIO,
-# if !defined(BF538_FAMILY)
- (struct gpio_port_t *) PORTGIO,
- (struct gpio_port_t *) PORTHIO,
-# endif
-#elif defined(BF561_FAMILY)
- (struct gpio_port_t *) FIO0_FLAG_D,
- (struct gpio_port_t *) FIO1_FLAG_D,
- (struct gpio_port_t *) FIO2_FLAG_D,
-#else
-# error no gpio arrays defined
-#endif
-};
-
-#if defined(CONFIG_BF52x) || defined(BF537_FAMILY) || defined(CONFIG_BF51x) || \
- defined(CONFIG_BF50x)
-static unsigned short * const port_fer[] = {
- (unsigned short *) PORTF_FER,
- (unsigned short *) PORTG_FER,
- (unsigned short *) PORTH_FER,
-};
-
-# if !defined(BF537_FAMILY)
-static unsigned short * const port_mux[] = {
- (unsigned short *) PORTF_MUX,
- (unsigned short *) PORTG_MUX,
- (unsigned short *) PORTH_MUX,
-};
-
-static const
-u8 pmux_offset[][16] = {
-# 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(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 */
-# endif
-};
-# endif
-
-#elif defined(BF538_FAMILY)
-static unsigned short * const port_fer[] = {
- (unsigned short *) PORTCIO_FER,
- (unsigned short *) PORTDIO_FER,
- (unsigned short *) PORTEIO_FER,
-};
-#endif
-
-#ifdef CONFIG_BFIN_GPIO_TRACK
-#define RESOURCE_LABEL_SIZE 16
-
-static struct str_ident {
- char name[RESOURCE_LABEL_SIZE];
-} str_ident[MAX_RESOURCES];
-
-static void gpio_error(unsigned gpio)
-{
- printf("bfin-gpio: GPIO %d wasn't requested!\n", gpio);
-}
-
-static void set_label(unsigned short ident, const char *label)
-{
- if (label) {
- 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)
-{
- return (*str_ident[ident].name ? str_ident[ident].name : "UNKNOWN");
-}
-
-static int cmp_label(unsigned short ident, const char *label)
-{
- if (label == NULL)
- printf("bfin-gpio: please provide none-null label\n");
-
- if (label)
- return strcmp(str_ident[ident].name, label);
- else
- return -EINVAL;
-}
-
-#define map_entry(m, i) reserved_##m##_map[gpio_bank(i)]
-#define is_reserved(m, i, e) (map_entry(m, i) & gpio_bit(i))
-#define reserve(m, i) (map_entry(m, i) |= gpio_bit(i))
-#define unreserve(m, i) (map_entry(m, i) &= ~gpio_bit(i))
-#define DECLARE_RESERVED_MAP(m, c) static unsigned short reserved_##m##_map[c]
-#else
-#define is_reserved(m, i, e) (!(e))
-#define reserve(m, i)
-#define unreserve(m, i)
-#define DECLARE_RESERVED_MAP(m, c)
-#define gpio_error(gpio)
-#define set_label(...)
-#define get_label(...) ""
-#define cmp_label(...) 1
-#endif
-
-DECLARE_RESERVED_MAP(gpio, GPIO_BANK_NUM);
-DECLARE_RESERVED_MAP(peri, gpio_bank(MAX_RESOURCES));
-
-inline int check_gpio(unsigned gpio)
-{
- if (gpio >= MAX_BLACKFIN_GPIOS)
- return -EINVAL;
- return 0;
-}
-
-static void port_setup(unsigned gpio, unsigned short usage)
-{
-#if defined(BF538_FAMILY)
- /*
- * BF538/9 Port C,D and E are special.
- * Inverted PORT_FER polarity on CDE and no PORF_FER on F
- * Regular PORT F GPIOs are handled here, CDE are exclusively
- * managed by GPIOLIB
- */
-
- if (gpio < MAX_BLACKFIN_GPIOS || gpio >= MAX_RESOURCES)
- return;
-
- gpio -= MAX_BLACKFIN_GPIOS;
-
- if (usage == GPIO_USAGE)
- *port_fer[gpio_bank(gpio)] |= gpio_bit(gpio);
- else
- *port_fer[gpio_bank(gpio)] &= ~gpio_bit(gpio);
- SSYNC();
- return;
-#endif
-
- if (check_gpio(gpio))
- return;
-
-#if defined(CONFIG_BF52x) || defined(BF537_FAMILY) || defined(CONFIG_BF51x) || \
- defined(CONFIG_BF50x)
- if (usage == GPIO_USAGE)
- *port_fer[gpio_bank(gpio)] &= ~gpio_bit(gpio);
- else
- *port_fer[gpio_bank(gpio)] |= gpio_bit(gpio);
- SSYNC();
-#endif
-}
-
-#ifdef BF537_FAMILY
-static struct {
- unsigned short res;
- unsigned short offset;
-} port_mux_lut[] = {
- {.res = P_PPI0_D13, .offset = 11},
- {.res = P_PPI0_D14, .offset = 11},
- {.res = P_PPI0_D15, .offset = 11},
- {.res = P_SPORT1_TFS, .offset = 11},
- {.res = P_SPORT1_TSCLK, .offset = 11},
- {.res = P_SPORT1_DTPRI, .offset = 11},
- {.res = P_PPI0_D10, .offset = 10},
- {.res = P_PPI0_D11, .offset = 10},
- {.res = P_PPI0_D12, .offset = 10},
- {.res = P_SPORT1_RSCLK, .offset = 10},
- {.res = P_SPORT1_RFS, .offset = 10},
- {.res = P_SPORT1_DRPRI, .offset = 10},
- {.res = P_PPI0_D8, .offset = 9},
- {.res = P_PPI0_D9, .offset = 9},
- {.res = P_SPORT1_DRSEC, .offset = 9},
- {.res = P_SPORT1_DTSEC, .offset = 9},
- {.res = P_TMR2, .offset = 8},
- {.res = P_PPI0_FS3, .offset = 8},
- {.res = P_TMR3, .offset = 7},
- {.res = P_SPI0_SSEL4, .offset = 7},
- {.res = P_TMR4, .offset = 6},
- {.res = P_SPI0_SSEL5, .offset = 6},
- {.res = P_TMR5, .offset = 5},
- {.res = P_SPI0_SSEL6, .offset = 5},
- {.res = P_UART1_RX, .offset = 4},
- {.res = P_UART1_TX, .offset = 4},
- {.res = P_TMR6, .offset = 4},
- {.res = P_TMR7, .offset = 4},
- {.res = P_UART0_RX, .offset = 3},
- {.res = P_UART0_TX, .offset = 3},
- {.res = P_DMAR0, .offset = 3},
- {.res = P_DMAR1, .offset = 3},
- {.res = P_SPORT0_DTSEC, .offset = 1},
- {.res = P_SPORT0_DRSEC, .offset = 1},
- {.res = P_CAN0_RX, .offset = 1},
- {.res = P_CAN0_TX, .offset = 1},
- {.res = P_SPI0_SSEL7, .offset = 1},
- {.res = P_SPORT0_TFS, .offset = 0},
- {.res = P_SPORT0_DTPRI, .offset = 0},
- {.res = P_SPI0_SSEL2, .offset = 0},
- {.res = P_SPI0_SSEL3, .offset = 0},
-};
-
-static void portmux_setup(unsigned short per)
-{
- u16 y, offset, muxreg, mask;
- u16 function = P_FUNCT2MUX(per);
-
- for (y = 0; y < ARRAY_SIZE(port_mux_lut); y++) {
- if (port_mux_lut[y].res == per) {
-
- /* SET PORTMUX REG */
-
- offset = port_mux_lut[y].offset;
- muxreg = bfin_read_PORT_MUX();
-
- if (offset == 1)
- mask = 3;
- else
- mask = 1;
-
- muxreg &= ~(mask << offset);
- muxreg |= ((function & mask) << offset);
- bfin_write_PORT_MUX(muxreg);
- }
- }
-}
-#elif defined(CONFIG_BF52x) || defined(CONFIG_BF51x)
-inline void portmux_setup(unsigned short per)
-{
- u16 pmux, ident = P_IDENT(per), function = P_FUNCT2MUX(per);
- u8 offset = pmux_offset[gpio_bank(ident)][gpio_sub_n(ident)];
-
- pmux = *port_mux[gpio_bank(ident)];
- pmux &= ~(3 << offset);
- pmux |= (function & 3) << offset;
- *port_mux[gpio_bank(ident)] = pmux;
- SSYNC();
-}
-#else
-# define portmux_setup(...) do { } while (0)
-#endif
-
-/***********************************************************
-*
-* FUNCTIONS: Blackfin General Purpose Ports Access Functions
-*
-* INPUTS/OUTPUTS:
-* gpio - GPIO Number between 0 and MAX_BLACKFIN_GPIOS
-*
-*
-* DESCRIPTION: These functions abstract direct register access
-* to Blackfin processor General Purpose
-* Ports Regsiters
-*
-* CAUTION: These functions do not belong to the GPIO Driver API
-*************************************************************
-* MODIFICATION HISTORY :
-**************************************************************/
-
-/* Set a specific bit */
-
-#define SET_GPIO(name) \
-void set_gpio_ ## name(unsigned gpio, unsigned short arg) \
-{ \
- unsigned long flags; \
- local_irq_save(flags); \
- if (arg) \
- gpio_array[gpio_bank(gpio)]->name |= gpio_bit(gpio); \
- else \
- gpio_array[gpio_bank(gpio)]->name &= ~gpio_bit(gpio); \
- AWA_DUMMY_READ(name); \
- local_irq_restore(flags); \
-}
-
-SET_GPIO(dir) /* set_gpio_dir() */
-SET_GPIO(inen) /* set_gpio_inen() */
-SET_GPIO(polar) /* set_gpio_polar() */
-SET_GPIO(edge) /* set_gpio_edge() */
-SET_GPIO(both) /* set_gpio_both() */
-
-
-#define SET_GPIO_SC(name) \
-void set_gpio_ ## name(unsigned gpio, unsigned short arg) \
-{ \
- unsigned long flags; \
- if (ANOMALY_05000311 || ANOMALY_05000323) \
- local_irq_save(flags); \
- if (arg) \
- gpio_array[gpio_bank(gpio)]->name ## _set = gpio_bit(gpio); \
- else \
- gpio_array[gpio_bank(gpio)]->name ## _clear = gpio_bit(gpio); \
- if (ANOMALY_05000311 || ANOMALY_05000323) { \
- AWA_DUMMY_READ(name); \
- local_irq_restore(flags); \
- } \
-}
-
-SET_GPIO_SC(maska)
-SET_GPIO_SC(maskb)
-SET_GPIO_SC(data)
-
-void set_gpio_toggle(unsigned gpio)
-{
- unsigned long flags;
- if (ANOMALY_05000311 || ANOMALY_05000323)
- local_irq_save(flags);
- gpio_array[gpio_bank(gpio)]->toggle = gpio_bit(gpio);
- if (ANOMALY_05000311 || ANOMALY_05000323) {
- AWA_DUMMY_READ(toggle);
- local_irq_restore(flags);
- }
-}
-
-/* Set current PORT date (16-bit word) */
-
-#define SET_GPIO_P(name) \
-void set_gpiop_ ## name(unsigned gpio, unsigned short arg) \
-{ \
- unsigned long flags; \
- if (ANOMALY_05000311 || ANOMALY_05000323) \
- local_irq_save(flags); \
- gpio_array[gpio_bank(gpio)]->name = arg; \
- if (ANOMALY_05000311 || ANOMALY_05000323) { \
- AWA_DUMMY_READ(name); \
- local_irq_restore(flags); \
- } \
-}
-
-SET_GPIO_P(data)
-SET_GPIO_P(dir)
-SET_GPIO_P(inen)
-SET_GPIO_P(polar)
-SET_GPIO_P(edge)
-SET_GPIO_P(both)
-SET_GPIO_P(maska)
-SET_GPIO_P(maskb)
-
-/* Get a specific bit */
-#define GET_GPIO(name) \
-unsigned short get_gpio_ ## name(unsigned gpio) \
-{ \
- unsigned long flags; \
- unsigned short ret; \
- if (ANOMALY_05000311 || ANOMALY_05000323) \
- local_irq_save(flags); \
- ret = 0x01 & (gpio_array[gpio_bank(gpio)]->name >> gpio_sub_n(gpio)); \
- if (ANOMALY_05000311 || ANOMALY_05000323) { \
- AWA_DUMMY_READ(name); \
- local_irq_restore(flags); \
- } \
- return ret; \
-}
-
-GET_GPIO(data)
-GET_GPIO(dir)
-GET_GPIO(inen)
-GET_GPIO(polar)
-GET_GPIO(edge)
-GET_GPIO(both)
-GET_GPIO(maska)
-GET_GPIO(maskb)
-
-/* Get current PORT date (16-bit word) */
-
-#define GET_GPIO_P(name) \
-unsigned short get_gpiop_ ## name(unsigned gpio) \
-{ \
- unsigned long flags; \
- unsigned short ret; \
- if (ANOMALY_05000311 || ANOMALY_05000323) \
- local_irq_save(flags); \
- ret = (gpio_array[gpio_bank(gpio)]->name); \
- if (ANOMALY_05000311 || ANOMALY_05000323) { \
- AWA_DUMMY_READ(name); \
- local_irq_restore(flags); \
- } \
- return ret; \
-}
-
-GET_GPIO_P(data)
-GET_GPIO_P(dir)
-GET_GPIO_P(inen)
-GET_GPIO_P(polar)
-GET_GPIO_P(edge)
-GET_GPIO_P(both)
-GET_GPIO_P(maska)
-GET_GPIO_P(maskb)
-
-/***********************************************************
-*
-* 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 :
-**************************************************************/
-
-int peripheral_request(unsigned short per, const char *label)
-{
- 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;
-
- BUG_ON(ident >= MAX_RESOURCES);
-
- /* If a pin can be muxed as either GPIO or peripheral, make
- * sure it is not already a GPIO pin when we request it.
- */
- if (unlikely(!check_gpio(ident) && is_reserved(gpio, ident, 1))) {
- printf("%s: Peripheral %d is already reserved as GPIO by %s !\n",
- __func__, ident, get_label(ident));
- return -EBUSY;
- }
-
- if (unlikely(is_reserved(peri, ident, 1))) {
-
- /*
- * Pin functions like AMC address strobes my
- * be requested and used by several drivers
- */
-
- if (!(per & P_MAYSHARE)) {
- /*
- * Allow that the identical pin function can
- * be requested from the same driver twice
- */
-
- if (cmp_label(ident, label) == 0)
- goto anyway;
-
- printf("%s: Peripheral %d function %d is already reserved by %s !\n",
- __func__, ident, P_FUNCT2MUX(per), get_label(ident));
- return -EBUSY;
- }
- }
-
- anyway:
- reserve(peri, ident);
-
- portmux_setup(per);
- port_setup(ident, PERIPHERAL_USAGE);
-
- set_label(ident, label);
-
- return 0;
-}
-
-int peripheral_request_list(const 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;
-}
-
-void peripheral_free(unsigned short per)
-{
- unsigned short ident = P_IDENT(per);
-
- if (per & P_DONTCARE)
- return;
-
- if (!(per & P_DEFINED))
- return;
-
- if (unlikely(!is_reserved(peri, ident, 0)))
- return;
-
- if (!(per & P_MAYSHARE))
- port_setup(ident, GPIO_USAGE);
-
- unreserve(peri, ident);
-
- set_label(ident, "free");
-}
-
-void peripheral_free_list(const unsigned short per[])
-{
- u16 cnt;
- for (cnt = 0; per[cnt] != 0; cnt++)
- peripheral_free(per[cnt]);
-}
-
-/***********************************************************
-*
-* FUNCTIONS: Blackfin GPIO Driver
-*
-* INPUTS/OUTPUTS:
-* gpio PIO Number between 0 and MAX_BLACKFIN_GPIOS
-* label String
-*
-* DESCRIPTION: Blackfin GPIO Driver API
-*
-* CAUTION:
-*************************************************************
-* MODIFICATION HISTORY :
-**************************************************************/
-
-int gpio_request(unsigned gpio, const char *label)
-{
- if (check_gpio(gpio) < 0)
- return -EINVAL;
-
- /*
- * Allow that the identical GPIO can
- * be requested from the same driver twice
- * Do nothing and return -
- */
-
- if (cmp_label(gpio, label) == 0)
- return 0;
-
- if (unlikely(is_reserved(gpio, gpio, 1))) {
- printf("bfin-gpio: GPIO %d is already reserved by %s !\n",
- gpio, get_label(gpio));
- return -EBUSY;
- }
- if (unlikely(is_reserved(peri, gpio, 1))) {
- printf("bfin-gpio: GPIO %d is already reserved as Peripheral by %s !\n",
- gpio, get_label(gpio));
- return -EBUSY;
- }
- else { /* Reset POLAR setting when acquiring a gpio for the first time */
- set_gpio_polar(gpio, 0);
- }
-
- reserve(gpio, gpio);
- set_label(gpio, label);
-
- port_setup(gpio, GPIO_USAGE);
-
- return 0;
-}
-
-int gpio_free(unsigned gpio)
-{
- if (check_gpio(gpio) < 0)
- return -1;
-
- if (unlikely(!is_reserved(gpio, gpio, 0))) {
- gpio_error(gpio);
- return -1;
- }
-
- unreserve(gpio, gpio);
-
- set_label(gpio, "free");
-
- return 0;
-}
-
-#ifdef ADI_SPECIAL_GPIO_BANKS
-DECLARE_RESERVED_MAP(special_gpio, gpio_bank(MAX_RESOURCES));
-
-int special_gpio_request(unsigned gpio, const char *label)
-{
- /*
- * Allow that the identical GPIO can
- * be requested from the same driver twice
- * Do nothing and return -
- */
-
- if (cmp_label(gpio, label) == 0)
- return 0;
-
- if (unlikely(is_reserved(special_gpio, gpio, 1))) {
- printf("bfin-gpio: GPIO %d is already reserved by %s !\n",
- gpio, get_label(gpio));
- return -EBUSY;
- }
- if (unlikely(is_reserved(peri, gpio, 1))) {
- printf("bfin-gpio: GPIO %d is already reserved as Peripheral by %s !\n",
- gpio, get_label(gpio));
-
- return -EBUSY;
- }
-
- reserve(special_gpio, gpio);
- reserve(peri, gpio);
-
- set_label(gpio, label);
- port_setup(gpio, GPIO_USAGE);
-
- return 0;
-}
-
-void special_gpio_free(unsigned gpio)
-{
- if (unlikely(!is_reserved(special_gpio, gpio, 0))) {
- gpio_error(gpio);
- return;
- }
-
- unreserve(special_gpio, gpio);
- unreserve(peri, gpio);
- set_label(gpio, "free");
-}
-#endif
-
-static inline void __gpio_direction_input(unsigned gpio)
-{
- gpio_array[gpio_bank(gpio)]->dir &= ~gpio_bit(gpio);
- gpio_array[gpio_bank(gpio)]->inen |= gpio_bit(gpio);
-}
-
-int gpio_direction_input(unsigned gpio)
-{
- unsigned long flags;
-
- if (!is_reserved(gpio, gpio, 0)) {
- gpio_error(gpio);
- return -EINVAL;
- }
-
- local_irq_save(flags);
- __gpio_direction_input(gpio);
- AWA_DUMMY_READ(inen);
- local_irq_restore(flags);
-
- return 0;
-}
-
-int gpio_set_value(unsigned gpio, int arg)
-{
- if (arg)
- gpio_array[gpio_bank(gpio)]->data_set = gpio_bit(gpio);
- else
- gpio_array[gpio_bank(gpio)]->data_clear = gpio_bit(gpio);
-
- return 0;
-}
-
-int gpio_direction_output(unsigned gpio, int value)
-{
- unsigned long flags;
-
- if (!is_reserved(gpio, gpio, 0)) {
- gpio_error(gpio);
- return -EINVAL;
- }
-
- local_irq_save(flags);
-
- gpio_array[gpio_bank(gpio)]->inen &= ~gpio_bit(gpio);
- gpio_set_value(gpio, value);
- gpio_array[gpio_bank(gpio)]->dir |= gpio_bit(gpio);
-
- AWA_DUMMY_READ(dir);
- local_irq_restore(flags);
-
- return 0;
-}
-
-int gpio_get_value(unsigned gpio)
-{
- unsigned long flags;
-
- if (unlikely(get_gpio_edge(gpio))) {
- int ret;
- local_irq_save(flags);
- set_gpio_edge(gpio, 0);
- ret = get_gpio_data(gpio);
- set_gpio_edge(gpio, 1);
- local_irq_restore(flags);
- return ret;
- } else
- return get_gpio_data(gpio);
-}
-
-/* If we are booting from SPI and our board lacks a strong enough pull up,
- * the core can reset and execute the bootrom faster than the resistor can
- * pull the signal logically high. To work around this (common) error in
- * board design, we explicitly set the pin back to GPIO mode, force /CS
- * high, and wait for the electrons to do their thing.
- *
- * This function only makes sense to be called from reset code, but it
- * lives here as we need to force all the GPIO states w/out going through
- * BUG() checks and such.
- */
-void bfin_reset_boot_spi_cs(unsigned short pin)
-{
- unsigned short gpio = P_IDENT(pin);
- port_setup(gpio, GPIO_USAGE);
- gpio_array[gpio_bank(gpio)]->data_set = gpio_bit(gpio);
- AWA_DUMMY_READ(data_set);
- udelay(1);
-}
-
-int name_to_gpio(const char *name)
-{
- int port_base;
-
- if (tolower(*name) == 'p') {
- ++name;
-
- switch (tolower(*name)) {
-#ifdef GPIO_PA0
- case 'a': port_base = GPIO_PA0; break;
-#endif
-#ifdef GPIO_PB0
- case 'b': port_base = GPIO_PB0; break;
-#endif
-#ifdef GPIO_PC0
- case 'c': port_base = GPIO_PC0; break;
-#endif
-#ifdef GPIO_PD0
- case 'd': port_base = GPIO_PD0; break;
-#endif
-#ifdef GPIO_PE0
- case 'e': port_base = GPIO_PE0; break;
-#endif
-#ifdef GPIO_PF0
- case 'f': port_base = GPIO_PF0; break;
-#endif
-#ifdef GPIO_PG0
- case 'g': port_base = GPIO_PG0; break;
-#endif
-#ifdef GPIO_PH0
- case 'h': port_base = GPIO_PH0; break;
-#endif
-#ifdef GPIO_PI0
- case 'i': port_base = GPIO_PI0; break;
-#endif
-#ifdef GPIO_PJ
- case 'j': port_base = GPIO_PJ0; break;
-#endif
- default: return -1;
- }
-
- ++name;
- } else
- port_base = 0;
-
- return port_base + simple_strtoul(name, NULL, 10);
-}
-
-void gpio_labels(void)
-{
- int c, gpio;
-
- for (c = 0; c < MAX_RESOURCES; c++) {
- gpio = is_reserved(gpio, c, 1);
- if (!check_gpio(c) && gpio)
- printf("GPIO_%d:\t%s\tGPIO %s\n", c,
- get_label(c),
- get_gpio_dir(c) ? "OUTPUT" : "INPUT");
- else if (is_reserved(peri, c, 1))
- printf("GPIO_%d:\t%s\tPeripheral\n", c, get_label(c));
- else
- continue;
- }
-}
-#else
-struct gpio_port_t * const gpio_array[] = {
- (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,
-#if defined(CONFIG_BF54x)
- (struct gpio_port_t *)PORTH_FER,
- (struct gpio_port_t *)PORTI_FER,
- (struct gpio_port_t *)PORTJ_FER,
-#endif
-};
-#endif