diff options
author | Lennert Buytenhek <buytenh@wantstofly.org> | 2008-03-27 14:51:41 -0400 |
---|---|---|
committer | Nicolas Pitre <nico@marvell.com> | 2008-03-27 14:51:41 -0400 |
commit | 9dd0b194bf6804b1998f0fe261b2606ec7b58d72 (patch) | |
tree | c9fd5ab51dc256818c24a8a771dc068d021039e2 /arch/arm/mach-orion/gpio.c | |
parent | 159ffb3a04f6bc619643af680df406faafd0199d (diff) |
Orion: orion -> orion5x rename
Do a global s/orion/orion5x/ of the Orion 5x-specific bits (i.e.
not the plat-orion bits.)
Signed-off-by: Lennert Buytenhek <buytenh@marvell.com>
Reviewed-by: Tzachi Perelstein <tzachi@marvell.com>
Acked-by: Saeed Bishara <saeed@marvell.com>
Acked-by: Russell King <rmk+kernel@arm.linux.org.uk>
Signed-off-by: Nicolas Pitre <nico@marvell.com>
Diffstat (limited to 'arch/arm/mach-orion/gpio.c')
-rw-r--r-- | arch/arm/mach-orion/gpio.c | 226 |
1 files changed, 0 insertions, 226 deletions
diff --git a/arch/arm/mach-orion/gpio.c b/arch/arm/mach-orion/gpio.c deleted file mode 100644 index afc7be08b30..00000000000 --- a/arch/arm/mach-orion/gpio.c +++ /dev/null @@ -1,226 +0,0 @@ -/* - * arch/arm/mach-orion/gpio.c - * - * GPIO functions for Marvell Orion System On Chip - * - * Maintainer: Tzachi Perelstein <tzachi@marvell.com> - * - * This file is licensed under the terms of the GNU General Public - * License version 2. This program is licensed "as is" without any - * warranty of any kind, whether express or implied. - */ - -#include <linux/kernel.h> -#include <linux/init.h> -#include <linux/module.h> -#include <linux/spinlock.h> -#include <linux/bitops.h> -#include <asm/gpio.h> -#include <asm/io.h> -#include <asm/arch/orion.h> -#include "common.h" - -static DEFINE_SPINLOCK(gpio_lock); -static unsigned long gpio_valid[BITS_TO_LONGS(GPIO_MAX)]; -static const char *gpio_label[GPIO_MAX]; /* non null for allocated GPIOs */ - -void __init orion_gpio_set_valid_pins(u32 pins) -{ - gpio_valid[0] = pins; -} - -/* - * GENERIC_GPIO primitives - */ -int gpio_direction_input(unsigned pin) -{ - unsigned long flags; - - if (pin >= GPIO_MAX || !test_bit(pin, gpio_valid)) { - pr_debug("%s: invalid GPIO %d\n", __func__, pin); - return -EINVAL; - } - - spin_lock_irqsave(&gpio_lock, flags); - - /* - * Some callers might have not used the gpio_request(), - * so flag this pin as requested now. - */ - if (!gpio_label[pin]) - gpio_label[pin] = "?"; - - orion_setbits(GPIO_IO_CONF, 1 << pin); - - spin_unlock_irqrestore(&gpio_lock, flags); - return 0; -} -EXPORT_SYMBOL(gpio_direction_input); - -int gpio_direction_output(unsigned pin, int value) -{ - unsigned long flags; - int mask; - - if (pin >= GPIO_MAX || !test_bit(pin, gpio_valid)) { - pr_debug("%s: invalid GPIO %d\n", __func__, pin); - return -EINVAL; - } - - spin_lock_irqsave(&gpio_lock, flags); - - /* - * Some callers might have not used the gpio_request(), - * so flag this pin as requested now. - */ - if (!gpio_label[pin]) - gpio_label[pin] = "?"; - - mask = 1 << pin; - orion_clrbits(GPIO_BLINK_EN, mask); - if (value) - orion_setbits(GPIO_OUT, mask); - else - orion_clrbits(GPIO_OUT, mask); - orion_clrbits(GPIO_IO_CONF, mask); - - spin_unlock_irqrestore(&gpio_lock, flags); - return 0; -} -EXPORT_SYMBOL(gpio_direction_output); - -int gpio_get_value(unsigned pin) -{ - int val, mask = 1 << pin; - - if (orion_read(GPIO_IO_CONF) & mask) - val = orion_read(GPIO_DATA_IN) ^ orion_read(GPIO_IN_POL); - else - val = orion_read(GPIO_OUT); - - return val & mask; -} -EXPORT_SYMBOL(gpio_get_value); - -void gpio_set_value(unsigned pin, int value) -{ - unsigned long flags; - int mask = 1 << pin; - - spin_lock_irqsave(&gpio_lock, flags); - - orion_clrbits(GPIO_BLINK_EN, mask); - if (value) - orion_setbits(GPIO_OUT, mask); - else - orion_clrbits(GPIO_OUT, mask); - - spin_unlock_irqrestore(&gpio_lock, flags); -} -EXPORT_SYMBOL(gpio_set_value); - -void orion_gpio_set_blink(unsigned pin, int blink) -{ - unsigned long flags; - int mask = 1 << pin; - - spin_lock_irqsave(&gpio_lock, flags); - - orion_clrbits(GPIO_OUT, mask); - if (blink) - orion_setbits(GPIO_BLINK_EN, mask); - else - orion_clrbits(GPIO_BLINK_EN, mask); - - spin_unlock_irqrestore(&gpio_lock, flags); -} -EXPORT_SYMBOL(orion_gpio_set_blink); - -int gpio_request(unsigned pin, const char *label) -{ - int ret = 0; - unsigned long flags; - - if (pin >= GPIO_MAX || !test_bit(pin, gpio_valid)) { - pr_debug("%s: invalid GPIO %d\n", __func__, pin); - return -EINVAL; - } - - spin_lock_irqsave(&gpio_lock, flags); - - if (gpio_label[pin]) { - pr_debug("%s: GPIO %d already used as %s\n", - __func__, pin, gpio_label[pin]); - ret = -EBUSY; - } else - gpio_label[pin] = label ? label : "?"; - - spin_unlock_irqrestore(&gpio_lock, flags); - return ret; -} -EXPORT_SYMBOL(gpio_request); - -void gpio_free(unsigned pin) -{ - if (pin >= GPIO_MAX || !test_bit(pin, gpio_valid)) { - pr_debug("%s: invalid GPIO %d\n", __func__, pin); - return; - } - - if (!gpio_label[pin]) - pr_warning("%s: GPIO %d already freed\n", __func__, pin); - else - gpio_label[pin] = NULL; -} -EXPORT_SYMBOL(gpio_free); - -/* Debug helper */ -void gpio_display(void) -{ - int i; - - for (i = 0; i < GPIO_MAX; i++) { - printk(KERN_DEBUG "Pin-%d: ", i); - - if (!test_bit(i, gpio_valid)) { - printk("non-GPIO\n"); - } else if (!gpio_label[i]) { - printk("GPIO, free\n"); - } else { - printk("GPIO, used by %s, ", gpio_label[i]); - if (orion_read(GPIO_IO_CONF) & (1 << i)) { - printk("input, active %s, level %s, edge %s\n", - ((orion_read(GPIO_IN_POL) >> i) & 1) ? "low" : "high", - ((orion_read(GPIO_LEVEL_MASK) >> i) & 1) ? "enabled" : "masked", - ((orion_read(GPIO_EDGE_MASK) >> i) & 1) ? "enabled" : "masked"); - } else { - printk("output, val=%d\n", (orion_read(GPIO_OUT) >> i) & 1); - } - } - } - - printk(KERN_DEBUG "MPP_0_7_CTRL (0x%08x) = 0x%08x\n", - MPP_0_7_CTRL, orion_read(MPP_0_7_CTRL)); - printk(KERN_DEBUG "MPP_8_15_CTRL (0x%08x) = 0x%08x\n", - MPP_8_15_CTRL, orion_read(MPP_8_15_CTRL)); - printk(KERN_DEBUG "MPP_16_19_CTRL (0x%08x) = 0x%08x\n", - MPP_16_19_CTRL, orion_read(MPP_16_19_CTRL)); - printk(KERN_DEBUG "MPP_DEV_CTRL (0x%08x) = 0x%08x\n", - MPP_DEV_CTRL, orion_read(MPP_DEV_CTRL)); - printk(KERN_DEBUG "GPIO_OUT (0x%08x) = 0x%08x\n", - GPIO_OUT, orion_read(GPIO_OUT)); - printk(KERN_DEBUG "GPIO_IO_CONF (0x%08x) = 0x%08x\n", - GPIO_IO_CONF, orion_read(GPIO_IO_CONF)); - printk(KERN_DEBUG "GPIO_BLINK_EN (0x%08x) = 0x%08x\n", - GPIO_BLINK_EN, orion_read(GPIO_BLINK_EN)); - printk(KERN_DEBUG "GPIO_IN_POL (0x%08x) = 0x%08x\n", - GPIO_IN_POL, orion_read(GPIO_IN_POL)); - printk(KERN_DEBUG "GPIO_DATA_IN (0x%08x) = 0x%08x\n", - GPIO_DATA_IN, orion_read(GPIO_DATA_IN)); - printk(KERN_DEBUG "GPIO_LEVEL_MASK (0x%08x) = 0x%08x\n", - GPIO_LEVEL_MASK, orion_read(GPIO_LEVEL_MASK)); - printk(KERN_DEBUG "GPIO_EDGE_CAUSE (0x%08x) = 0x%08x\n", - GPIO_EDGE_CAUSE, orion_read(GPIO_EDGE_CAUSE)); - printk(KERN_DEBUG "GPIO_EDGE_MASK (0x%08x) = 0x%08x\n", - GPIO_EDGE_MASK, orion_read(GPIO_EDGE_MASK)); -} |