| /* |
| * This file is part of the coreboot project. |
| * |
| * Copyright (C) 2015 Intel Corp. |
| * (Written by Alexandru Gagniuc <alexandrux.gagniuc@intel.com> for Intel Corp.) |
| * |
| * 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; either version 2 of the License, or |
| * (at your option) any later version. |
| */ |
| |
| #include <assert.h> |
| #include <soc/gpio.h> |
| #include <soc/iosf.h> |
| |
| /* This list must be in order, from highest pad numbers, to lowest pad numbers*/ |
| static const struct pad_community { |
| uint16_t first_pad; |
| uint8_t port; |
| } gpio_communities[] = { |
| { |
| .port = GPIO_SOUTHWEST, |
| .first_pad = SW_OFFSET, |
| }, { |
| .port = GPIO_WEST, |
| .first_pad = W_OFFSET, |
| }, { |
| .port = GPIO_NORTHWEST, |
| .first_pad = NW_OFFSET, |
| }, { |
| .port = GPIO_NORTH, |
| .first_pad = N_OFFSET, |
| } |
| }; |
| |
| static const struct pad_community *gpio_get_community(uint16_t pad) |
| { |
| const struct pad_community *map = gpio_communities; |
| |
| assert(pad < TOTAL_PADS); |
| |
| while (map->first_pad > pad) |
| map++; |
| |
| return map; |
| } |
| |
| void gpio_configure_pad(const struct pad_config *cfg) |
| { |
| const struct pad_community *comm = gpio_get_community(cfg->pad); |
| uint16_t config_offset = PAD_CFG_OFFSET(cfg->pad - comm->first_pad); |
| iosf_write(comm->port, config_offset, cfg->config0); |
| iosf_write(comm->port, config_offset + sizeof(uint32_t), cfg->config1); |
| } |
| |
| void gpio_configure_pads(const struct pad_config *cfg, size_t num_pads) |
| { |
| uint32_t i; |
| |
| for (i = 0; i < num_pads; i++) |
| gpio_configure_pad(cfg + i); |
| } |