diff options
Diffstat (limited to 'target/linux/adm5120/files-3.8/arch/mips/adm5120/common/gpio.c')
| -rw-r--r-- | target/linux/adm5120/files-3.8/arch/mips/adm5120/common/gpio.c | 330 |
1 files changed, 0 insertions, 330 deletions
diff --git a/target/linux/adm5120/files-3.8/arch/mips/adm5120/common/gpio.c b/target/linux/adm5120/files-3.8/arch/mips/adm5120/common/gpio.c deleted file mode 100644 index e60ed7ad01..0000000000 --- a/target/linux/adm5120/files-3.8/arch/mips/adm5120/common/gpio.c +++ /dev/null @@ -1,330 +0,0 @@ -/* - * ADM5120 generic GPIO API support via GPIOLIB - * - * Copyright (C) 2007-2008 Gabor Juhos <juhosg@openwrt.org> - * - * This program is free software; you can redistribute it and/or modify it - * under the terms of the GNU General Public License version 2 as published - * by the Free Software Foundation. - * - */ - -#include <linux/init.h> -#include <linux/types.h> -#include <linux/module.h> -#include <linux/irq.h> -#include <linux/delay.h> -#include <linux/platform_device.h> -#include <linux/io.h> -#include <linux/gpio.h> - -#include <asm/addrspace.h> - -#include <asm/mach-adm5120/adm5120_defs.h> -#include <asm/mach-adm5120/adm5120_info.h> -#include <asm/mach-adm5120/adm5120_switch.h> - -#define GPIO_REG(r) (void __iomem *)(KSEG1ADDR(ADM5120_SWITCH_BASE) + r) - -struct gpio1_desc { - void __iomem *reg; /* register address */ - u8 iv_shift; /* shift amount for input bit */ - u8 mode_shift; /* shift amount for mode bits */ -}; - -#define GPIO1_DESC(p, l) { \ - .reg = GPIO_REG(SWITCH_REG_PORT0_LED + ((p) * 4)), \ - .iv_shift = LED0_IV_SHIFT + (l), \ - .mode_shift = (l) * 4 \ - } - -static struct gpio1_desc gpio1_table[15] = { - GPIO1_DESC(0, 0), GPIO1_DESC(0, 1), GPIO1_DESC(0, 2), - GPIO1_DESC(1, 0), GPIO1_DESC(1, 1), GPIO1_DESC(1, 2), - GPIO1_DESC(2, 0), GPIO1_DESC(2, 1), GPIO1_DESC(2, 2), - GPIO1_DESC(3, 0), GPIO1_DESC(3, 1), GPIO1_DESC(3, 2), - GPIO1_DESC(4, 0), GPIO1_DESC(4, 1), GPIO1_DESC(4, 2) -}; - -static u32 gpio_conf2; - -int adm5120_gpio_to_irq(unsigned gpio) -{ - int ret; - - switch (gpio) { - case ADM5120_GPIO_PIN2: - ret = ADM5120_IRQ_GPIO2; - break; - case ADM5120_GPIO_PIN4: - ret = ADM5120_IRQ_GPIO4; - break; - default: - ret = -EINVAL; - break; - } - - return ret; -} -EXPORT_SYMBOL(adm5120_gpio_to_irq); - -int adm5120_irq_to_gpio(unsigned irq) -{ - int ret; - - switch (irq) { - case ADM5120_IRQ_GPIO2: - ret = ADM5120_GPIO_PIN2; - break; - case ADM5120_IRQ_GPIO4: - ret = ADM5120_GPIO_PIN4; - break; - default: - ret = -EINVAL; - break; - } - - return ret; -} -EXPORT_SYMBOL(adm5120_irq_to_gpio); - -/* - * Helpers for GPIO lines in GPIO_CONF0 register - */ -#define PIN_IM(p) ((1 << GPIO_CONF0_IM_SHIFT) << p) -#define PIN_IV(p) ((1 << GPIO_CONF0_IV_SHIFT) << p) -#define PIN_OE(p) ((1 << GPIO_CONF0_OE_SHIFT) << p) -#define PIN_OV(p) ((1 << GPIO_CONF0_OV_SHIFT) << p) - -int __adm5120_gpio0_get_value(unsigned offset) -{ - void __iomem **reg; - u32 t; - - reg = GPIO_REG(SWITCH_REG_GPIO_CONF0); - - t = __raw_readl(reg); - if ((t & PIN_IM(offset)) != 0) - t &= PIN_IV(offset); - else - t &= PIN_OV(offset); - - return (t) ? 1 : 0; -} -EXPORT_SYMBOL(__adm5120_gpio0_get_value); - -void __adm5120_gpio0_set_value(unsigned offset, int value) -{ - void __iomem **reg; - u32 t; - - reg = GPIO_REG(SWITCH_REG_GPIO_CONF0); - - t = __raw_readl(reg); - if (value == 0) - t &= ~(PIN_OV(offset)); - else - t |= PIN_OV(offset); - - __raw_writel(t, reg); -} -EXPORT_SYMBOL(__adm5120_gpio0_set_value); - -static int adm5120_gpio0_get_value(struct gpio_chip *chip, unsigned offset) -{ - return __adm5120_gpio0_get_value(offset); -} - -static void adm5120_gpio0_set_value(struct gpio_chip *chip, - unsigned offset, int value) -{ - __adm5120_gpio0_set_value(offset, value); -} - -static int adm5120_gpio0_direction_input(struct gpio_chip *chip, - unsigned offset) -{ - void __iomem **reg; - u32 t; - - reg = GPIO_REG(SWITCH_REG_GPIO_CONF0); - - t = __raw_readl(reg); - t &= ~(PIN_OE(offset)); - t |= PIN_IM(offset); - __raw_writel(t, reg); - - return 0; -} - -static int adm5120_gpio0_direction_output(struct gpio_chip *chip, - unsigned offset, int value) -{ - void __iomem **reg; - u32 t; - - reg = GPIO_REG(SWITCH_REG_GPIO_CONF0); - - t = __raw_readl(reg); - t &= ~(PIN_IM(offset) | PIN_OV(offset)); - t |= PIN_OE(offset); - - if (value) - t |= PIN_OV(offset); - - __raw_writel(t, reg); - - return 0; -} - -static struct gpio_chip adm5120_gpio0_chip = { - .label = "adm5120 gpio0", - .get = adm5120_gpio0_get_value, - .set = adm5120_gpio0_set_value, - .direction_input = adm5120_gpio0_direction_input, - .direction_output = adm5120_gpio0_direction_output, - .base = ADM5120_GPIO_PIN0, - .ngpio = ADM5120_GPIO_PIN7 - ADM5120_GPIO_PIN0 + 1, -}; - -int __adm5120_gpio1_get_value(unsigned offset) -{ - void __iomem **reg; - u32 t, m; - - reg = gpio1_table[offset].reg; - - t = __raw_readl(reg); - m = (t >> gpio1_table[offset].mode_shift) & LED_MODE_MASK; - if (m == LED_MODE_INPUT) - return (t >> gpio1_table[offset].iv_shift) & 1; - - if (m == LED_MODE_OUT_LOW) - return 0; - - return 1; -} -EXPORT_SYMBOL(__adm5120_gpio1_get_value); - -void __adm5120_gpio1_set_value(unsigned offset, int value) -{ - void __iomem **reg; - u32 t, s; - - reg = gpio1_table[offset].reg; - s = gpio1_table[offset].mode_shift; - - t = __raw_readl(reg); - t &= ~(LED_MODE_MASK << s); - - switch (value) { - case ADM5120_GPIO_LOW: - t |= (LED_MODE_OUT_LOW << s); - break; - case ADM5120_GPIO_FLASH: - case ADM5120_GPIO_LINK: - case ADM5120_GPIO_SPEED: - case ADM5120_GPIO_DUPLEX: - case ADM5120_GPIO_ACT: - case ADM5120_GPIO_COLL: - case ADM5120_GPIO_LINK_ACT: - case ADM5120_GPIO_DUPLEX_COLL: - case ADM5120_GPIO_10M_ACT: - case ADM5120_GPIO_100M_ACT: - t |= ((value & LED_MODE_MASK) << s); - break; - default: - t |= (LED_MODE_OUT_HIGH << s); - break; - } - - __raw_writel(t, reg); -} -EXPORT_SYMBOL(__adm5120_gpio1_set_value); - -static int adm5120_gpio1_get_value(struct gpio_chip *chip, unsigned offset) -{ - return __adm5120_gpio1_get_value(offset); -} - -static void adm5120_gpio1_set_value(struct gpio_chip *chip, - unsigned offset, int value) -{ - __adm5120_gpio1_set_value(offset, value); -} - -static int adm5120_gpio1_direction_input(struct gpio_chip *chip, - unsigned offset) -{ - void __iomem **reg; - u32 t; - - reg = gpio1_table[offset].reg; - t = __raw_readl(reg); - t &= ~(LED_MODE_MASK << gpio1_table[offset].mode_shift); - __raw_writel(t, reg); - - return 0; -} - -static int adm5120_gpio1_direction_output(struct gpio_chip *chip, - unsigned offset, int value) -{ - __adm5120_gpio1_set_value(offset, value); - return 0; -} - -static struct gpio_chip adm5120_gpio1_chip = { - .label = "adm5120 gpio1", - .get = adm5120_gpio1_get_value, - .set = adm5120_gpio1_set_value, - .direction_input = adm5120_gpio1_direction_input, - .direction_output = adm5120_gpio1_direction_output, - .base = ADM5120_GPIO_P0L0, - .ngpio = ADM5120_GPIO_P4L2 - ADM5120_GPIO_P0L0 + 1, -}; - -void __init adm5120_gpio_csx0_enable(void) -{ - gpio_conf2 |= GPIO_CONF2_CSX0; - SW_WRITE_REG(SWITCH_REG_GPIO_CONF2, gpio_conf2); - - gpio_request(ADM5120_GPIO_PIN1, "CSX0"); -} - -void __init adm5120_gpio_csx1_enable(void) -{ - gpio_conf2 |= GPIO_CONF2_CSX1; - SW_WRITE_REG(SWITCH_REG_GPIO_CONF2, gpio_conf2); - - gpio_request(ADM5120_GPIO_PIN3, "CSX1"); -} - -void __init adm5120_gpio_ew_enable(void) -{ - gpio_conf2 |= GPIO_CONF2_EW; - SW_WRITE_REG(SWITCH_REG_GPIO_CONF2, gpio_conf2); - - gpio_request(ADM5120_GPIO_PIN0, "EW"); -} - -void __init adm5120_gpio_init(void) -{ - int err; - - SW_WRITE_REG(SWITCH_REG_GPIO_CONF2, gpio_conf2); - - if (adm5120_package_pqfp()) { - gpiochip_reserve(ADM5120_GPIO_PIN4, 4); - adm5120_gpio0_chip.ngpio = 4; - } - - err = gpiochip_add(&adm5120_gpio0_chip); - if (err) - panic("cannot add ADM5120 GPIO0 chip, error=%d", err); - - err = gpiochip_add(&adm5120_gpio1_chip); - if (err) - panic("cannot add ADM5120 GPIO1 chip, error=%d", err); - -} |