diff options
Diffstat (limited to 'src/soc/nvidia/tegra132/padconfig.c')
| -rw-r--r-- | src/soc/nvidia/tegra132/padconfig.c | 133 |
1 files changed, 0 insertions, 133 deletions
diff --git a/src/soc/nvidia/tegra132/padconfig.c b/src/soc/nvidia/tegra132/padconfig.c deleted file mode 100644 index 40927d1cc2..0000000000 --- a/src/soc/nvidia/tegra132/padconfig.c +++ /dev/null @@ -1,133 +0,0 @@ -/* - * This file is part of the coreboot project. - * - * Copyright 2014 Google Inc. - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; version 2 of the License. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - */ - -#include <arch/io.h> -#include <soc/addressmap.h> -#include <soc/padconfig.h> - -static uint32_t * const pinmux_regs = (void *)(uintptr_t)TEGRA_APB_PINMUX_BASE; -static struct gpio_bank * const gpio_regs = (void *)(uintptr_t)TEGRA_GPIO_BASE; - -static inline struct gpio_bank * const get_gpio_bank_regs(int index) -{ - return &gpio_regs[gpio_index_to_bank(index)]; -} - -static inline uint32_t pad_get_pinmux(int index) -{ - return read32(&pinmux_regs[index]); -} - -static inline void pad_set_pinmux(int index, uint32_t reg) -{ - return write32(&pinmux_regs[index], reg); -} - -static inline void pad_set_gpio_out(int gpio_index, int val) -{ - struct gpio_bank * const regs = get_gpio_bank_regs(gpio_index); - int port = gpio_index_to_port(gpio_index); - int bit = gpio_to_bit(gpio_index); - - write32(®s->out_value_mask[port], - (1 << (bit + GPIO_GPIOS_PER_PORT)) | (val << bit)); - write32(®s->out_enable_mask[port], - (1 << (bit + GPIO_GPIOS_PER_PORT)) | (1 << bit)); -} - -static inline void pad_set_mode(int gpio_index, int sfio_or_gpio) -{ - struct gpio_bank * const regs = get_gpio_bank_regs(gpio_index); - int port = gpio_index_to_port(gpio_index); - int bit = gpio_to_bit(gpio_index); - - write32(®s->config_mask[port], - (1 << (bit + GPIO_GPIOS_PER_PORT)) | (sfio_or_gpio << bit)); -} - -static inline void pad_set_gpio_mode(int gpio_index) -{ - pad_set_mode(gpio_index, 1); -} - -static inline void pad_set_sfio_mode(int gpio_index) -{ - pad_set_mode(gpio_index, 0); -} - -static void configure_unused_pad(const struct pad_config * const entry) -{ - uint32_t reg; - - /* - * Tristate the pad and disable input. If power-on-reset state is a - * pullup maintain that. Otherwise enable pulldown. - */ - reg = pad_get_pinmux(entry->pinmux_index); - reg &= ~PINMUX_INPUT_ENABLE; - reg |= PINMUX_TRISTATE; - reg &= ~PINMUX_PULL_MASK; - if (entry->por_pullup) - reg |= PINMUX_PULL_UP; - else - reg |= PINMUX_PULL_DOWN; - pad_set_pinmux(entry->pinmux_index, reg); - - /* - * Set to GPIO mode if GPIO available to bypass collisions of - * controller signals going to more than one pad. - */ - if (entry->pad_has_gpio) - pad_set_gpio_mode(entry->gpio_index); -} - -static void configure_sfio_pad(const struct pad_config * const entry) -{ - pad_set_pinmux(entry->pinmux_index, entry->pinmux_flags); - pad_set_sfio_mode(entry->gpio_index); -} - -static void configure_gpio_pad(const struct pad_config * const entry) -{ - uint32_t reg; - - if (entry->gpio_out0 || entry->gpio_out1) - pad_set_gpio_out(entry->gpio_index, entry->gpio_out1 ? 1 : 0); - - /* Keep the original SFIO selection. */ - reg = pinmux_get_config(entry->pinmux_index); - reg &= PINMUX_FUNC_MASK; - reg |= entry->pinmux_flags; - - pad_set_pinmux(entry->pinmux_index, reg); - pad_set_gpio_mode(entry->gpio_index); -} - -void soc_configure_pads(const struct pad_config * const entries, size_t num) -{ - size_t i; - - for (i = 0; i < num; i++) { - const struct pad_config * const entry = &entries[i]; - - if (entry->unused) { - configure_unused_pad(entry); - } else if (entry->sfio) { - configure_sfio_pad(entry); - } else { - configure_gpio_pad(entry); - } - } -} |