---

yaml
---
r: 177256
b: refs/heads/master
c: 621dd24
h: refs/heads/master
v: v3

[refs]

@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 46fe23ac39a0cdc4272946c1e3f9ff4fd5765a5b
+refs/heads/master: 621dd2474399237ca556a54037c3b8557e80d021

trunk/arch/blackfin/include/asm/gpio.h

@@ -159,6 +159,11 @@ struct gpio_port_t {
 };
 #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);

trunk/arch/blackfin/kernel/bfin_gpio.c

@@ -100,6 +100,12 @@ u8 pmux_offset[][16] = {
 };
 # 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];
@@ -163,6 +169,27 @@ static int cmp_label(unsigned short ident, const char *label)
 
 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;
 
@@ -981,6 +1008,76 @@ void bfin_gpio_free(unsigned gpio)
 }
 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;

trunk/arch/blackfin/mach-bf538/Makefile

@@ -3,3 +3,4 @@
 #
 
 obj-y := ints-priority.o dma.o
+obj-$(CONFIG_GPIOLIB)	+= ext-gpio.o

trunk/arch/blackfin/mach-bf538/ext-gpio.c

@@ -0,0 +1,123 @@
+/*
+ * 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);

trunk/arch/blackfin/mach-bf538/include/mach/defBF539.h

@@ -468,31 +468,31 @@
 /* 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) */
 

trunk/arch/blackfin/mach-bf538/include/mach/gpio.h

@@ -1,17 +1,14 @@
 /*
- * 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

trunk/arch/blackfin/mach-bf538/include/mach/portmux.h

@@ -7,7 +7,7 @@
 #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)

trunk/arch/blackfin/mach-common/dpmc_modes.S

@@ -404,6 +404,21 @@ ENTRY(_do_hibernate)
 	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 */
@@ -716,6 +731,21 @@ ENTRY(_do_hibernate)
 	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)