diff options
Diffstat (limited to 'plat/mediatek/mt8173/drivers/gpio/gpio.c')
| -rw-r--r-- | plat/mediatek/mt8173/drivers/gpio/gpio.c | 198 |
1 files changed, 0 insertions, 198 deletions
diff --git a/plat/mediatek/mt8173/drivers/gpio/gpio.c b/plat/mediatek/mt8173/drivers/gpio/gpio.c deleted file mode 100644 index f19c9315..00000000 --- a/plat/mediatek/mt8173/drivers/gpio/gpio.c +++ /dev/null @@ -1,198 +0,0 @@ -/* - * Copyright (c) 2015, ARM Limited and Contributors. All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions are met: - * - * Redistributions of source code must retain the above copyright notice, this - * list of conditions and the following disclaimer. - * - * Redistributions in binary form must reproduce the above copyright notice, - * this list of conditions and the following disclaimer in the documentation - * and/or other materials provided with the distribution. - * - * Neither the name of ARM nor the names of its contributors may be used - * to endorse or promote products derived from this software without specific - * prior written permission. - * - * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" - * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE - * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE - * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE - * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR - * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF - * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS - * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN - * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) - * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE - * POSSIBILITY OF SUCH DAMAGE. - */ -#include <debug.h> -#include <mmio.h> -#include <mt8173_def.h> -#include <pmic_wrap_init.h> -#include "gpio.h" - -enum { - MAX_GPIO_REG_BITS = 16, -}; - -struct mt_gpio_obj { - struct gpio_regs *reg; -}; - -static struct mt_gpio_obj gpio_dat = { - .reg = (struct gpio_regs *)(GPIO_BASE), -}; - -static struct mt_gpio_obj *gpio_obj = &gpio_dat; - -struct mt_gpioext_obj { - struct gpioext_regs *reg; -}; - -static struct mt_gpioext_obj gpioext_dat = { - .reg = (struct gpioext_regs *)(GPIOEXT_BASE), -}; - -static struct mt_gpioext_obj *gpioext_obj = &gpioext_dat; - -static inline struct mt_gpio_obj *mt_get_gpio_obj(void) -{ - return gpio_obj; -} - -static inline struct mt_gpioext_obj *mt_get_gpioext_obj(void) -{ - return gpioext_obj; -} - -enum { - GPIO_PRO_DIR = 0, - GPIO_PRO_DOUT, - GPIO_PRO_DIN, - GPIO_PRO_PULLEN, - GPIO_PRO_PULLSEL, - GPIO_PRO_MODE, - GPIO_PRO_MAX, -}; - -static inline int32_t gpioext_write(uint16_t *addr, int64_t data) -{ - return pwrap_write((uint32_t)(uintptr_t)addr, data); -} - -static inline int32_t gpioext_set_bits(uint32_t bit, uint16_t *reg) -{ - return gpioext_write(reg, bit); -} - -static int32_t mt_set_gpio_chip(uint32_t pin, uint32_t property, uint32_t val) -{ - uint32_t pos = 0; - uint32_t bit = 0; - struct mt_gpio_obj *obj = mt_get_gpio_obj(); - uint16_t *reg; - uint32_t data = 0; - - if (!obj) - return -ERACCESS; - - if (pin >= GPIO_EXTEND_START) - return -ERINVAL; - - if (property >= GPIO_PRO_MAX) - return -ERINVAL; - - pos = pin / MAX_GPIO_REG_BITS; - bit = pin % MAX_GPIO_REG_BITS; - data = 1L << bit; - - switch (property) { - case GPIO_PRO_DIR: - if (val == GPIO_DIR_IN) - reg = &obj->reg->dir[pos].rst; - else - reg = &obj->reg->dir[pos].set; - break; - case GPIO_PRO_DOUT: - if (val == GPIO_OUT_ZERO) - reg = &obj->reg->dout[pos].rst; - else - reg = &obj->reg->dout[pos].set; - break; - default: - return -ERINVAL; - } - - mmio_write_16((uintptr_t)reg, data); - - return RSUCCESS; -} - -static int32_t mt_set_gpio_ext(uint32_t pin, uint32_t property, uint32_t val) -{ - uint32_t pos = 0; - uint32_t bit = 0; - struct mt_gpioext_obj *obj = mt_get_gpioext_obj(); - uint16_t *reg; - uint32_t data = 0; - int ret = 0; - - if (!obj) - return -ERACCESS; - - if (pin >= MAX_GPIO_PIN) - return -ERINVAL; - - if (property >= GPIO_PRO_MAX) - return -ERINVAL; - - pin -= GPIO_EXTEND_START; - pos = pin / MAX_GPIO_REG_BITS; - bit = pin % MAX_GPIO_REG_BITS; - - switch (property) { - case GPIO_PRO_DIR: - if (val == GPIO_DIR_IN) - reg = &obj->reg->dir[pos].rst; - else - reg = &obj->reg->dir[pos].set; - break; - case GPIO_PRO_DOUT: - if (val == GPIO_OUT_ZERO) - reg = &obj->reg->dout[pos].rst; - else - reg = &obj->reg->dout[pos].set; - break; - default: - return -ERINVAL; - } - data = (1L << bit); - ret = gpioext_set_bits(data, reg); - - return ret ? -ERWRAPPER : RSUCCESS; -} - -static void mt_gpio_pin_decrypt(uint32_t *cipher) -{ - if ((*cipher & (0x80000000)) == 0) - INFO("Pin %u decrypt warning!\n", *cipher); - *cipher &= ~(0x80000000); -} - -int32_t mt_set_gpio_out(uint32_t pin, uint32_t output) -{ - uint32_t gp = GPIO_PRO_DOUT; - - mt_gpio_pin_decrypt(&pin); - - return (pin >= GPIO_EXTEND_START) ? - mt_set_gpio_ext(pin, gp, output) : - mt_set_gpio_chip(pin, gp, output); -} - -void gpio_set(uint32_t gpio, int32_t value) -{ - mt_set_gpio_out(gpio, value); -} |