bfin: Move gpio support for bf54x and bf60x into the generic driver folder.

The gpio spec for bf54x and bf60x differ a lot from the old gpio driver for bf5xx.
A lot of machine macros are used to accomodate both code in one gpio driver.
This patch split the old gpio driver and move new gpio2 support to the generic
gpio driver folder.

- To enable gpio2 driver, macro CONFIG_ADI_GPIO2 should be defined in the board's
config header file.
- The gpio2 driver supports bf54x, bf60x and future ADI processors, while the
older gpio driver supports bf50x, bf51x, bf52x, bf53x and bf561.
- All blackfin specific gpio function names are replaced by the generic gpio APIs.

Signed-off-by: Sonic Zhang <sonic.zhang@analog.com>
This commit is contained in:
Sonic Zhang 2013-05-02 13:46:21 +08:00
parent e6c5ab28c7
commit da34aae5fb
9 changed files with 480 additions and 185 deletions

View File

@ -18,7 +18,7 @@ CEXTRA := initcode.o
SEXTRA := start.o
SOBJS := interrupt.o cache.o
COBJS-y += cpu.o
COBJS-y += gpio.o
COBJS-$(CONFIG_ADI_GPIO1) += gpio.o
COBJS-y += interrupts.o
COBJS-$(CONFIG_JTAG_CONSOLE) += jtag-console.o
COBJS-y += os_log.o

View File

@ -1,5 +1,6 @@
/*
* GPIO Abstraction Layer
* ADI GPIO1 Abstraction Layer
* Support BF50x, BF51x, BF52x, BF53x and BF561 only.
*
* Copyright 2006-2010 Analog Devices Inc.
*
@ -55,25 +56,6 @@ static struct gpio_port_t * const gpio_array[] = {
(struct gpio_port_t *) FIO0_FLAG_D,
(struct gpio_port_t *) FIO1_FLAG_D,
(struct gpio_port_t *) FIO2_FLAG_D,
#elif defined(CONFIG_BF54x)
(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,
#elif defined(CONFIG_BF60x)
(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,
#else
# error no gpio arrays defined
#endif
@ -174,12 +156,6 @@ DECLARE_RESERVED_MAP(peri, gpio_bank(MAX_RESOURCES));
inline int check_gpio(unsigned gpio)
{
#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)
return -EINVAL;
#endif
if (gpio >= MAX_BLACKFIN_GPIOS)
return -EINVAL;
return 0;
@ -218,18 +194,6 @@ static void port_setup(unsigned gpio, unsigned short usage)
else
*port_fer[gpio_bank(gpio)] |= gpio_bit(gpio);
SSYNC();
#elif defined(CONFIG_BF54x)
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();
#elif defined(CONFIG_BF60x)
if (usage == GPIO_USAGE)
gpio_array[gpio_bank(gpio)]->port_fer_clear = gpio_bit(gpio);
else
gpio_array[gpio_bank(gpio)]->port_fer_set = gpio_bit(gpio);
SSYNC();
#endif
}
@ -304,30 +268,6 @@ static void portmux_setup(unsigned short per)
}
}
}
#elif defined(CONFIG_BF54x) || defined(CONFIG_BF60x)
inline void portmux_setup(unsigned short per)
{
u32 pmux;
u16 ident = P_IDENT(per);
u16 function = P_FUNCT2MUX(per);
pmux = gpio_array[gpio_bank(ident)]->port_mux;
pmux &= ~(0x3 << (2 * gpio_sub_n(ident)));
pmux |= (function & 0x3) << (2 * gpio_sub_n(ident));
gpio_array[gpio_bank(ident)]->port_mux = pmux;
}
inline u16 get_portmux(unsigned short per)
{
u32 pmux;
u16 ident = P_IDENT(per);
pmux = gpio_array[gpio_bank(ident)]->port_mux;
return (pmux >> (2 * gpio_sub_n(ident)) & 0x3);
}
#elif defined(CONFIG_BF52x) || defined(CONFIG_BF51x)
inline void portmux_setup(unsigned short per)
{
@ -344,7 +284,6 @@ inline void portmux_setup(unsigned short per)
# define portmux_setup(...) do { } while (0)
#endif
#if !defined(CONFIG_BF54x) && !defined(CONFIG_BF60x)
/***********************************************************
*
* FUNCTIONS: Blackfin General Purpose Ports Access Functions
@ -491,15 +430,6 @@ GET_GPIO_P(both)
GET_GPIO_P(maska)
GET_GPIO_P(maskb)
#else /* CONFIG_BF54x */
unsigned short get_gpio_dir(unsigned gpio)
{
return (0x01 & (gpio_array[gpio_bank(gpio)]->dir_clear >> gpio_sub_n(gpio)));
}
#endif /* CONFIG_BF54x */
/***********************************************************
*
* FUNCTIONS: Blackfin Peripheral Resource Allocation
@ -548,11 +478,7 @@ int peripheral_request(unsigned short per, const char *label)
* be requested and used by several drivers
*/
#if defined(CONFIG_BF54x) || defined(CONFIG_BF60x)
if (!((per & P_MAYSHARE) && get_portmux(per) == P_FUNCT2MUX(per))) {
#else
if (!(per & P_MAYSHARE)) {
#endif
/*
* Allow that the identical pin function can
* be requested from the same driver twice
@ -641,7 +567,7 @@ void peripheral_free_list(const unsigned short per[])
* MODIFICATION HISTORY :
**************************************************************/
int bfin_gpio_request(unsigned gpio, const char *label)
int gpio_request(unsigned gpio, const char *label)
{
if (check_gpio(gpio) < 0)
return -EINVAL;
@ -665,11 +591,9 @@ int bfin_gpio_request(unsigned gpio, const char *label)
gpio, get_label(gpio));
return -EBUSY;
}
#if !defined(CONFIG_BF54x) && !defined(CONFIG_BF60x)
else { /* Reset POLAR setting when acquiring a gpio for the first time */
set_gpio_polar(gpio, 0);
}
#endif
reserve(gpio, gpio);
set_label(gpio, label);
@ -679,27 +603,27 @@ int bfin_gpio_request(unsigned gpio, const char *label)
return 0;
}
#ifdef CONFIG_BFIN_GPIO_TRACK
void bfin_gpio_free(unsigned gpio)
int gpio_free(unsigned gpio)
{
if (check_gpio(gpio) < 0)
return;
return -1;
if (unlikely(!is_reserved(gpio, gpio, 0))) {
gpio_error(gpio);
return;
return -1;
}
unreserve(gpio, gpio);
set_label(gpio, "free");
}
#endif
#ifdef BFIN_SPECIAL_GPIO_BANKS
return 0;
}
#ifdef ADI_SPECIAL_GPIO_BANKS
DECLARE_RESERVED_MAP(special_gpio, gpio_bank(MAX_RESOURCES));
int bfin_special_gpio_request(unsigned gpio, const char *label)
int special_gpio_request(unsigned gpio, const char *label)
{
/*
* Allow that the identical GPIO can
@ -731,7 +655,7 @@ int bfin_special_gpio_request(unsigned gpio, const char *label)
return 0;
}
void bfin_special_gpio_free(unsigned gpio)
void special_gpio_free(unsigned gpio)
{
if (unlikely(!is_reserved(special_gpio, gpio, 0))) {
gpio_error(gpio);
@ -744,21 +668,13 @@ void bfin_special_gpio_free(unsigned gpio)
}
#endif
static inline void __bfin_gpio_direction_input(unsigned gpio)
static inline void __gpio_direction_input(unsigned gpio)
{
#if defined(CONFIG_BF54x) || defined(CONFIG_BF60x)
gpio_array[gpio_bank(gpio)]->dir_clear = gpio_bit(gpio);
#else
gpio_array[gpio_bank(gpio)]->dir &= ~gpio_bit(gpio);
#endif
#if defined(CONFIG_BF60x)
gpio_array[gpio_bank(gpio)]->inen_set = gpio_bit(gpio);
#else
gpio_array[gpio_bank(gpio)]->inen |= gpio_bit(gpio);
#endif
}
int bfin_gpio_direction_input(unsigned gpio)
int gpio_direction_input(unsigned gpio)
{
unsigned long flags;
@ -768,31 +684,24 @@ int bfin_gpio_direction_input(unsigned gpio)
}
local_irq_save(flags);
__bfin_gpio_direction_input(gpio);
__gpio_direction_input(gpio);
AWA_DUMMY_READ(inen);
local_irq_restore(flags);
return 0;
}
void bfin_gpio_toggle_value(unsigned gpio)
{
#ifdef CONFIG_BF54x
gpio_set_value(gpio, !gpio_get_value(gpio));
#else
gpio_array[gpio_bank(gpio)]->toggle = gpio_bit(gpio);
#endif
}
void bfin_gpio_set_value(unsigned gpio, int arg)
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 bfin_gpio_direction_output(unsigned gpio, int value)
int gpio_direction_output(unsigned gpio, int value)
{
unsigned long flags;
@ -803,17 +712,9 @@ int bfin_gpio_direction_output(unsigned gpio, int value)
local_irq_save(flags);
#if defined(CONFIG_BF60x)
gpio_array[gpio_bank(gpio)]->inen_clear = gpio_bit(gpio);
#else
gpio_array[gpio_bank(gpio)]->inen &= ~gpio_bit(gpio);
#endif
gpio_set_value(gpio, value);
#if defined(CONFIG_BF54x) || defined(CONFIG_BF60x)
gpio_array[gpio_bank(gpio)]->dir_set = gpio_bit(gpio);
#else
gpio_array[gpio_bank(gpio)]->dir |= gpio_bit(gpio);
#endif
AWA_DUMMY_READ(dir);
local_irq_restore(flags);
@ -821,11 +722,8 @@ int bfin_gpio_direction_output(unsigned gpio, int value)
return 0;
}
int bfin_gpio_get_value(unsigned gpio)
int gpio_get_value(unsigned gpio)
{
#if defined(CONFIG_BF54x) || defined(CONFIG_BF60x)
return (1 & (gpio_array[gpio_bank(gpio)]->data >> gpio_sub_n(gpio)));
#else
unsigned long flags;
if (unlikely(get_gpio_edge(gpio))) {
@ -838,7 +736,6 @@ int bfin_gpio_get_value(unsigned gpio)
return ret;
} else
return get_gpio_data(gpio);
#endif
}
/* If we are booting from SPI and our board lacks a strong enough pull up,
@ -860,8 +757,7 @@ void bfin_reset_boot_spi_cs(unsigned short pin)
udelay(1);
}
#ifdef CONFIG_BFIN_GPIO_TRACK
void bfin_gpio_labels(void)
void gpio_labels(void)
{
int c, gpio;
@ -877,4 +773,3 @@ void bfin_gpio_labels(void)
continue;
}
}
#endif

View File

@ -7,6 +7,8 @@
#ifndef __ARCH_BLACKFIN_GPIO_H__
#define __ARCH_BLACKFIN_GPIO_H__
#include <asm-generic/gpio.h>
#define gpio_bank(x) ((x) >> 4)
#define gpio_bit(x) (1<<((x) & 0xF))
#define gpio_sub_n(x) ((x) & 0xF)
@ -65,10 +67,11 @@
#define PERIPHERAL_USAGE 1
#define GPIO_USAGE 0
#define MAX_GPIOS MAX_BLACKFIN_GPIOS
#ifndef __ASSEMBLY__
#if !defined(CONFIG_BF54x) && !defined(CONFIG_BF60x)
#ifdef CONFIG_ADI_GPIO1
void set_gpio_dir(unsigned, unsigned short);
void set_gpio_inen(unsigned, unsigned short);
void set_gpio_polar(unsigned, unsigned short);
@ -140,61 +143,16 @@ struct gpio_port_t {
};
#endif
#ifdef CONFIG_BFIN_GPIO_TRACK
void bfin_gpio_labels(void);
void bfin_gpio_free(unsigned gpio);
#else
#define bfin_gpio_labels()
#define bfin_gpio_free(gpio)
#define bfin_gpio_request(gpio, label) bfin_gpio_request(gpio)
#define bfin_special_gpio_request(gpio, label) bfin_special_gpio_request(gpio)
#ifdef ADI_SPECIAL_GPIO_BANKS
void special_gpio_free(unsigned gpio);
int special_gpio_request(unsigned gpio, const char *label);
#endif
#ifdef BFIN_SPECIAL_GPIO_BANKS
void bfin_special_gpio_free(unsigned gpio);
int bfin_special_gpio_request(unsigned gpio, const char *label);
#endif
int bfin_gpio_request(unsigned gpio, const char *label);
int bfin_gpio_direction_input(unsigned gpio);
int bfin_gpio_direction_output(unsigned gpio, int value);
int bfin_gpio_get_value(unsigned gpio);
void bfin_gpio_set_value(unsigned gpio, int value);
void bfin_gpio_toggle_value(unsigned gpio);
static inline int gpio_request(unsigned gpio, const char *label)
{
return bfin_gpio_request(gpio, label);
}
static inline void gpio_free(unsigned gpio)
{
return bfin_gpio_free(gpio);
}
static inline int gpio_direction_input(unsigned gpio)
{
return bfin_gpio_direction_input(gpio);
}
static inline int gpio_direction_output(unsigned gpio, int value)
{
return bfin_gpio_direction_output(gpio, value);
}
static inline int gpio_get_value(unsigned gpio)
{
return bfin_gpio_get_value(gpio);
}
static inline void gpio_set_value(unsigned gpio, int value)
{
return bfin_gpio_set_value(gpio, value);
}
void gpio_labels(void);
static inline int gpio_is_valid(int number)
{
return number >= 0 && number < MAX_BLACKFIN_GPIOS;
return number >= 0 && number < MAX_GPIOS;
}
#include <linux/ctype.h>
@ -248,7 +206,7 @@ static inline int name_to_gpio(const char *name)
}
#define name_to_gpio(n) name_to_gpio(n)
#define gpio_status() bfin_gpio_labels()
#define gpio_status() gpio_labels()
#endif /* __ASSEMBLY__ */

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@ -17,11 +17,6 @@
#define P_MAYSHARE 0x2000
#define P_DONTCARE 0x1000
#ifndef CONFIG_BFIN_GPIO_TRACK
#define peripheral_request(per, label) peripheral_request(per)
#define peripheral_request_list(per, label) peripheral_request_list(per)
#endif
#ifndef __ASSEMBLY__
int peripheral_request(unsigned short per, const char *label);

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@ -48,6 +48,7 @@ COBJS-$(CONFIG_DB8500_GPIO) += db8500_gpio.o
COBJS-$(CONFIG_BCM2835_GPIO) += bcm2835_gpio.o
COBJS-$(CONFIG_S3C2440_GPIO) += s3c2440_gpio.o
COBJS-$(CONFIG_XILINX_GPIO) += xilinx_gpio.o
COBJS-$(CONFIG_ADI_GPIO2) += adi_gpio2.o
COBJS := $(COBJS-y)
SRCS := $(COBJS:.o=.c)

440
drivers/gpio/adi_gpio2.c Normal file
View File

@ -0,0 +1,440 @@
/*
* ADI GPIO2 Abstraction Layer
* Support BF54x, BF60x and future processors.
*
* Copyright 2008-2013 Analog Devices Inc.
*
* Licensed under the GPL-2 or later
*/
#include <common.h>
#include <asm/errno.h>
#include <asm/gpio.h>
#include <asm/portmux.h>
static 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
};
#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("adi_gpio2: 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("adi_gpio2: 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) unsigned short reserved_##m##_map[c]
static DECLARE_RESERVED_MAP(gpio, GPIO_BANK_NUM);
static DECLARE_RESERVED_MAP(peri, gpio_bank(MAX_RESOURCES));
inline int check_gpio(unsigned gpio)
{
#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)
return -EINVAL;
#endif
if (gpio >= MAX_GPIOS)
return -EINVAL;
return 0;
}
static void port_setup(unsigned gpio, unsigned short usage)
{
#if defined(CONFIG_BF54x)
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);
#else
if (usage == GPIO_USAGE)
gpio_array[gpio_bank(gpio)]->port_fer_clear = gpio_bit(gpio);
else
gpio_array[gpio_bank(gpio)]->port_fer_set = gpio_bit(gpio);
#endif
SSYNC();
}
inline void portmux_setup(unsigned short per)
{
u32 pmux;
u16 ident = P_IDENT(per);
u16 function = P_FUNCT2MUX(per);
pmux = gpio_array[gpio_bank(ident)]->port_mux;
pmux &= ~(0x3 << (2 * gpio_sub_n(ident)));
pmux |= (function & 0x3) << (2 * gpio_sub_n(ident));
gpio_array[gpio_bank(ident)]->port_mux = pmux;
}
inline u16 get_portmux(unsigned short per)
{
u32 pmux;
u16 ident = P_IDENT(per);
pmux = gpio_array[gpio_bank(ident)]->port_mux;
return pmux >> (2 * gpio_sub_n(ident)) & 0x3;
}
unsigned short get_gpio_dir(unsigned gpio)
{
return 0x01 &
(gpio_array[gpio_bank(gpio)]->dir_clear >> gpio_sub_n(gpio));
}
/***********************************************************
*
* FUNCTIONS: Peripheral Resource Allocation
* and PortMux Setup
*
* INPUTS/OUTPUTS:
* per Peripheral Identifier
* label String
*
* DESCRIPTION: Peripheral Resource Allocation and Setup API
**************************************************************/
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) &&
get_portmux(per) == 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;
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: GPIO Driver
*
* INPUTS/OUTPUTS:
* gpio PIO Number between 0 and MAX_GPIOS
* label String
*
* DESCRIPTION: GPIO Driver API
**************************************************************/
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("adi_gpio2: GPIO %d is already reserved by %s!\n",
gpio, get_label(gpio));
return -EBUSY;
}
if (unlikely(is_reserved(peri, gpio, 1))) {
printf("adi_gpio2: GPIO %d is already reserved as Peripheral "
"by %s!\n", gpio, get_label(gpio));
return -EBUSY;
}
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
static 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("adi_gpio2: GPIO %d is already reserved by %s!\n",
gpio, get_label(gpio));
return -EBUSY;
}
if (unlikely(is_reserved(peri, gpio, 1))) {
printf("adi_gpio2: 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;
}
reserve(special_gpio, gpio);
reserve(peri, gpio);
set_label(gpio, "free");
}
#endif
static inline void __gpio_direction_input(unsigned gpio)
{
gpio_array[gpio_bank(gpio)]->dir_clear = gpio_bit(gpio);
#if defined(CONFIG_BF54x)
gpio_array[gpio_bank(gpio)]->inen |= gpio_bit(gpio);
#else
gpio_array[gpio_bank(gpio)]->inen_set = gpio_bit(gpio);
#endif
}
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);
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);
#if defined(CONFIG_BF54x)
gpio_array[gpio_bank(gpio)]->inen &= ~gpio_bit(gpio);
#else
gpio_array[gpio_bank(gpio)]->inen_clear = gpio_bit(gpio);
#endif
gpio_set_value(gpio, value);
gpio_array[gpio_bank(gpio)]->dir_set = gpio_bit(gpio);
local_irq_restore(flags);
return 0;
}
int gpio_get_value(unsigned gpio)
{
return 1 & (gpio_array[gpio_bank(gpio)]->data >> gpio_sub_n(gpio));
}
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;
}
}

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@ -182,6 +182,8 @@
#define CONFIG_UART_CONSOLE 1
#define CONFIG_BFIN_SPI_IMG_SIZE 0x50000
#define CONFIG_ADI_GPIO2
#undef CONFIG_VIDEO
#ifdef CONFIG_VIDEO
#define EASYLOGO_HEADER < asm/bfin_logo_230x230_gzip.h >

View File

@ -149,6 +149,8 @@
#define CONFIG_SYS_MEMTEST_END (CONFIG_STACKBASE - 20*1024*1024 + 4)
#define CONFIG_BFIN_SOFT_SWITCH
#define CONFIG_ADI_GPIO2
#if 0
#define CONFIG_UART_MEM 1024
#undef CONFIG_UART_CONSOLE

View File

@ -323,5 +323,7 @@
# define CONFIG_WATCHDOG_TIMEOUT_MSECS 5000
# endif
#endif
#ifndef CONFIG_ADI_GPIO2
# define CONFIG_ADI_GPIO1
#endif
#endif