};
#endif
+#ifdef BFIN_SPECIAL_GPIO_BANKS
+void bfin_special_gpio_free(unsigned gpio);
+int bfin_special_gpio_request(unsigned gpio, const char *label);
+#endif
+
#ifdef CONFIG_PM
unsigned int bfin_pm_standby_setup(void);
};
# endif
+#elif defined(BF538_FAMILY)
+static unsigned short * const port_fer[] = {
+ (unsigned short *) PORTCIO_FER,
+ (unsigned short *) PORTDIO_FER,
+ (unsigned short *) PORTEIO_FER,
+};
#endif
static unsigned short reserved_gpio_map[GPIO_BANK_NUM];
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;
}
EXPORT_SYMBOL(bfin_gpio_free);
+#ifdef BFIN_SPECIAL_GPIO_BANKS
+static unsigned short reserved_special_gpio_map[gpio_bank(MAX_RESOURCES)];
+
+int bfin_special_gpio_request(unsigned gpio, const char *label)
+{
+ unsigned long flags;
+
+ local_irq_save_hw(flags);
+
+ /*
+ * Allow that the identical GPIO can
+ * be requested from the same driver twice
+ * Do nothing and return -
+ */
+
+ if (cmp_label(gpio, label) == 0) {
+ local_irq_restore_hw(flags);
+ return 0;
+ }
+
+ if (unlikely(reserved_special_gpio_map[gpio_bank(gpio)] & gpio_bit(gpio))) {
+ local_irq_restore_hw(flags);
+ printk(KERN_ERR "bfin-gpio: GPIO %d is already reserved by %s !\n",
+ gpio, get_label(gpio));
+
+ return -EBUSY;
+ }
+ if (unlikely(reserved_peri_map[gpio_bank(gpio)] & gpio_bit(gpio))) {
+ local_irq_restore_hw(flags);
+ printk(KERN_ERR
+ "bfin-gpio: GPIO %d is already reserved as Peripheral by %s !\n",
+ gpio, get_label(gpio));
+
+ return -EBUSY;
+ }
+
+ reserved_special_gpio_map[gpio_bank(gpio)] |= gpio_bit(gpio);
+ reserved_peri_map[gpio_bank(gpio)] |= gpio_bit(gpio);
+
+ set_label(gpio, label);
+ local_irq_restore_hw(flags);
+ port_setup(gpio, GPIO_USAGE);
+
+ return 0;
+}
+EXPORT_SYMBOL(bfin_special_gpio_request);
+
+void bfin_special_gpio_free(unsigned gpio)
+{
+ unsigned long flags;
+
+ might_sleep();
+
+ local_irq_save_hw(flags);
+
+ if (unlikely(!(reserved_special_gpio_map[gpio_bank(gpio)] & gpio_bit(gpio)))) {
+ gpio_error(gpio);
+ local_irq_restore_hw(flags);
+ return;
+ }
+
+ reserved_special_gpio_map[gpio_bank(gpio)] &= ~gpio_bit(gpio);
+ reserved_peri_map[gpio_bank(gpio)] &= ~gpio_bit(gpio);
+ set_label(gpio, "free");
+ local_irq_restore_hw(flags);
+}
+EXPORT_SYMBOL(bfin_special_gpio_free);
+#endif
+
+
int bfin_gpio_irq_request(unsigned gpio, const char *label)
{
unsigned long flags;
#
obj-y := ints-priority.o dma.o
+obj-$(CONFIG_GPIOLIB) += ext-gpio.o
--- /dev/null
+/*
+ * GPIOLIB interface for BF538/9 PORT C, D, and E GPIOs
+ *
+ * Copyright 2009 Analog Devices Inc.
+ *
+ * Licensed under the GPL-2 or later.
+ */
+
+#include <linux/module.h>
+#include <linux/err.h>
+#include <asm/blackfin.h>
+#include <asm/gpio.h>
+#include <asm/portmux.h>
+
+#define DEFINE_REG(reg, off) \
+static inline u16 read_##reg(void __iomem *port) \
+ { return bfin_read16(port + off); } \
+static inline void write_##reg(void __iomem *port, u16 v) \
+ { bfin_write16(port + off, v); }
+
+DEFINE_REG(PORTIO, 0x00)
+DEFINE_REG(PORTIO_CLEAR, 0x10)
+DEFINE_REG(PORTIO_SET, 0x20)
+DEFINE_REG(PORTIO_DIR, 0x40)
+DEFINE_REG(PORTIO_INEN, 0x50)
+
+static void __iomem *gpio_chip_to_mmr(struct gpio_chip *chip)
+{
+ switch (chip->base) {
+ default: /* not really needed, but keeps gcc happy */
+ case GPIO_PC0: return (void __iomem *)PORTCIO;
+ case GPIO_PD0: return (void __iomem *)PORTDIO;
+ case GPIO_PE0: return (void __iomem *)PORTEIO;
+ }
+}
+
+static int bf538_gpio_get_value(struct gpio_chip *chip, unsigned gpio)
+{
+ void __iomem *port = gpio_chip_to_mmr(chip);
+ return !!(read_PORTIO(port) & (1u << gpio));
+}
+
+static void bf538_gpio_set_value(struct gpio_chip *chip, unsigned gpio, int value)
+{
+ void __iomem *port = gpio_chip_to_mmr(chip);
+ if (value)
+ write_PORTIO_SET(port, (1u << gpio));
+ else
+ write_PORTIO_CLEAR(port, (1u << gpio));
+}
+
+static int bf538_gpio_direction_input(struct gpio_chip *chip, unsigned gpio)
+{
+ void __iomem *port = gpio_chip_to_mmr(chip);
+ write_PORTIO_DIR(port, read_PORTIO_DIR(port) & ~(1u << gpio));
+ write_PORTIO_INEN(port, read_PORTIO_INEN(port) | (1u << gpio));
+ return 0;
+}
+
+static int bf538_gpio_direction_output(struct gpio_chip *chip, unsigned gpio, int value)
+{
+ void __iomem *port = gpio_chip_to_mmr(chip);
+ write_PORTIO_INEN(port, read_PORTIO_INEN(port) & ~(1u << gpio));
+ bf538_gpio_set_value(port, gpio, value);
+ write_PORTIO_DIR(port, read_PORTIO_DIR(port) | (1u << gpio));
+ return 0;
+}
+
+static int bf538_gpio_request(struct gpio_chip *chip, unsigned gpio)
+{
+ return bfin_special_gpio_request(chip->base + gpio, chip->label);
+}
+
+static void bf538_gpio_free(struct gpio_chip *chip, unsigned gpio)
+{
+ return bfin_special_gpio_free(chip->base + gpio);
+}
+
+/* We don't set the irq fields as these banks cannot generate interrupts */
+
+static struct gpio_chip bf538_portc_chip = {
+ .label = "GPIO-PC",
+ .direction_input = bf538_gpio_direction_input,
+ .get = bf538_gpio_get_value,
+ .direction_output = bf538_gpio_direction_output,
+ .set = bf538_gpio_set_value,
+ .request = bf538_gpio_request,
+ .free = bf538_gpio_free,
+ .base = GPIO_PC0,
+ .ngpio = GPIO_PC9 - GPIO_PC0 + 1,
+};
+
+static struct gpio_chip bf538_portd_chip = {
+ .label = "GPIO-PD",
+ .direction_input = bf538_gpio_direction_input,
+ .get = bf538_gpio_get_value,
+ .direction_output = bf538_gpio_direction_output,
+ .set = bf538_gpio_set_value,
+ .request = bf538_gpio_request,
+ .free = bf538_gpio_free,
+ .base = GPIO_PD0,
+ .ngpio = GPIO_PD13 - GPIO_PD0 + 1,
+};
+
+static struct gpio_chip bf538_porte_chip = {
+ .label = "GPIO-PE",
+ .direction_input = bf538_gpio_direction_input,
+ .get = bf538_gpio_get_value,
+ .direction_output = bf538_gpio_direction_output,
+ .set = bf538_gpio_set_value,
+ .request = bf538_gpio_request,
+ .free = bf538_gpio_free,
+ .base = GPIO_PE0,
+ .ngpio = GPIO_PE15 - GPIO_PE0 + 1,
+};
+
+static int __init bf538_extgpio_setup(void)
+{
+ return gpiochip_add(&bf538_portc_chip) |
+ gpiochip_add(&bf538_portd_chip) |
+ gpiochip_add(&bf538_porte_chip);
+}
+arch_initcall(bf538_extgpio_setup);
/* General-Purpose Ports (0xFFC01500 - 0xFFC015FF) */
/* GPIO Port C Register Names */
-#define GPIO_C_CNFG 0xFFC01500 /* GPIO Pin Port C Configuration Register */
-#define GPIO_C_D 0xFFC01510 /* GPIO Pin Port C Data Register */
-#define GPIO_C_C 0xFFC01520 /* Clear GPIO Pin Port C Register */
-#define GPIO_C_S 0xFFC01530 /* Set GPIO Pin Port C Register */
-#define GPIO_C_T 0xFFC01540 /* Toggle GPIO Pin Port C Register */
-#define GPIO_C_DIR 0xFFC01550 /* GPIO Pin Port C Direction Register */
-#define GPIO_C_INEN 0xFFC01560 /* GPIO Pin Port C Input Enable Register */
+#define PORTCIO_FER 0xFFC01500 /* GPIO Pin Port C Configuration Register */
+#define PORTCIO 0xFFC01510 /* GPIO Pin Port C Data Register */
+#define PORTCIO_CLEAR 0xFFC01520 /* Clear GPIO Pin Port C Register */
+#define PORTCIO_SET 0xFFC01530 /* Set GPIO Pin Port C Register */
+#define PORTCIO_TOGGLE 0xFFC01540 /* Toggle GPIO Pin Port C Register */
+#define PORTCIO_DIR 0xFFC01550 /* GPIO Pin Port C Direction Register */
+#define PORTCIO_INEN 0xFFC01560 /* GPIO Pin Port C Input Enable Register */
/* GPIO Port D Register Names */
-#define GPIO_D_CNFG 0xFFC01504 /* GPIO Pin Port D Configuration Register */
-#define GPIO_D_D 0xFFC01514 /* GPIO Pin Port D Data Register */
-#define GPIO_D_C 0xFFC01524 /* Clear GPIO Pin Port D Register */
-#define GPIO_D_S 0xFFC01534 /* Set GPIO Pin Port D Register */
-#define GPIO_D_T 0xFFC01544 /* Toggle GPIO Pin Port D Register */
-#define GPIO_D_DIR 0xFFC01554 /* GPIO Pin Port D Direction Register */
-#define GPIO_D_INEN 0xFFC01564 /* GPIO Pin Port D Input Enable Register */
+#define PORTDIO_FER 0xFFC01504 /* GPIO Pin Port D Configuration Register */
+#define PORTDIO 0xFFC01514 /* GPIO Pin Port D Data Register */
+#define PORTDIO_CLEAR 0xFFC01524 /* Clear GPIO Pin Port D Register */
+#define PORTDIO_SET 0xFFC01534 /* Set GPIO Pin Port D Register */
+#define PORTDIO_TOGGLE 0xFFC01544 /* Toggle GPIO Pin Port D Register */
+#define PORTDIO_DIR 0xFFC01554 /* GPIO Pin Port D Direction Register */
+#define PORTDIO_INEN 0xFFC01564 /* GPIO Pin Port D Input Enable Register */
/* GPIO Port E Register Names */
-#define GPIO_E_CNFG 0xFFC01508 /* GPIO Pin Port E Configuration Register */
-#define GPIO_E_D 0xFFC01518 /* GPIO Pin Port E Data Register */
-#define GPIO_E_C 0xFFC01528 /* Clear GPIO Pin Port E Register */
-#define GPIO_E_S 0xFFC01538 /* Set GPIO Pin Port E Register */
-#define GPIO_E_T 0xFFC01548 /* Toggle GPIO Pin Port E Register */
-#define GPIO_E_DIR 0xFFC01558 /* GPIO Pin Port E Direction Register */
-#define GPIO_E_INEN 0xFFC01568 /* GPIO Pin Port E Input Enable Register */
+#define PORTEIO_FER 0xFFC01508 /* GPIO Pin Port E Configuration Register */
+#define PORTEIO 0xFFC01518 /* GPIO Pin Port E Data Register */
+#define PORTEIO_CLEAR 0xFFC01528 /* Clear GPIO Pin Port E Register */
+#define PORTEIO_SET 0xFFC01538 /* Set GPIO Pin Port E Register */
+#define PORTEIO_TOGGLE 0xFFC01548 /* Toggle GPIO Pin Port E Register */
+#define PORTEIO_DIR 0xFFC01558 /* GPIO Pin Port E Direction Register */
+#define PORTEIO_INEN 0xFFC01568 /* GPIO Pin Port E Input Enable Register */
/* DMA Controller 1 Traffic Control Registers (0xFFC01B00 - 0xFFC01BFF) */
/*
- * Copyright (C) 2008 Analog Devices Inc.
+ * Copyright (C) 2008-2009 Analog Devices Inc.
* Licensed under the GPL-2 or later.
*/
#ifndef _MACH_GPIO_H_
#define _MACH_GPIO_H_
- /* FIXME:
- * For now only support PORTF GPIOs.
- * PORT C,D and E are for peripheral usage only
- */
#define MAX_BLACKFIN_GPIOS 16
+#define BFIN_SPECIAL_GPIO_BANKS 3
#define GPIO_PF0 0 /* PF */
#define GPIO_PF1 1
#ifndef _MACH_PORTMUX_H_
#define _MACH_PORTMUX_H_
-#define MAX_RESOURCES MAX_BLACKFIN_GPIOS
+#define MAX_RESOURCES 64
#define P_TMR2 (P_DONTCARE)
#define P_TMR1 (P_DONTCARE)
PM_SYS_PUSH(EBIU_FCTL)
#endif
+#ifdef PORTCIO_FER
+ PM_SYS_PUSH16(PORTCIO_DIR)
+ PM_SYS_PUSH16(PORTCIO_INEN)
+ PM_SYS_PUSH16(PORTCIO)
+ PM_SYS_PUSH16(PORTCIO_FER)
+ PM_SYS_PUSH16(PORTDIO_DIR)
+ PM_SYS_PUSH16(PORTDIO_INEN)
+ PM_SYS_PUSH16(PORTDIO)
+ PM_SYS_PUSH16(PORTDIO_FER)
+ PM_SYS_PUSH16(PORTEIO_DIR)
+ PM_SYS_PUSH16(PORTEIO_INEN)
+ PM_SYS_PUSH16(PORTEIO)
+ PM_SYS_PUSH16(PORTEIO_FER)
+#endif
+
PM_SYS_PUSH16(SYSCR)
/* Save Core MMRs */
P0.L = lo(PLL_CTL);
PM_SYS_POP16(SYSCR)
+#ifdef PORTCIO_FER
+ PM_SYS_POP16(PORTEIO_FER)
+ PM_SYS_POP16(PORTEIO)
+ PM_SYS_POP16(PORTEIO_INEN)
+ PM_SYS_POP16(PORTEIO_DIR)
+ PM_SYS_POP16(PORTDIO_FER)
+ PM_SYS_POP16(PORTDIO)
+ PM_SYS_POP16(PORTDIO_INEN)
+ PM_SYS_POP16(PORTDIO_DIR)
+ PM_SYS_POP16(PORTCIO_FER)
+ PM_SYS_POP16(PORTCIO)
+ PM_SYS_POP16(PORTCIO_INEN)
+ PM_SYS_POP16(PORTCIO_DIR)
+#endif
+
#ifdef EBIU_FCTL
PM_SYS_POP(EBIU_FCTL)
PM_SYS_POP(EBIU_MODE)
git.openpandora.org / pandora-kernel.git / commitdiff