diff options
Diffstat (limited to 'src/southbridge/intel/fsp_rangeley/gpio.c')
-rw-r--r-- | src/southbridge/intel/fsp_rangeley/gpio.c | 108 |
1 files changed, 108 insertions, 0 deletions
diff --git a/src/southbridge/intel/fsp_rangeley/gpio.c b/src/southbridge/intel/fsp_rangeley/gpio.c new file mode 100644 index 0000000000..8569b967d4 --- /dev/null +++ b/src/southbridge/intel/fsp_rangeley/gpio.c @@ -0,0 +1,108 @@ +/* + * This file is part of the coreboot project. + * + * Copyright (C) 2011 The Chromium OS Authors. All rights reserved. + * Copyright (C) 2013 Sage Electronic Engineering, LLC. + * + * 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. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA + */ + +#include <stdint.h> +#include <string.h> +#include <arch/io.h> + +#include "soc.h" +#include "gpio.h" + +#define MAX_GPIO_NUMBER 31 /* zero based */ + +void setup_soc_gpios(const struct soc_gpio_map *gpio) +{ + u16 gpiobase = pci_read_config16(SOC_LPC_DEV, GBASE) & ~0xf; + u32 cfiobase = pci_read_config32(SOC_LPC_DEV, IOBASE) & ~0xf; + u32 cfio_cnt = 0; + + + /* GPIO */ + if (gpio->core.level) + outl(*((u32*)gpio->core.level), gpiobase + GPIO_SC_GP_LVL); + if (gpio->core.mode) + outl(*((u32*)gpio->core.mode), gpiobase + GPIO_SC_USE_SEL); + if (gpio->core.direction) + outl(*((u32*)gpio->core.direction), gpiobase + GPIO_SC_IO_SEL); + if (gpio->core.tpe) + outl(*((u32*)gpio->core.tpe), gpiobase + GPIO_SC_TPE); + if (gpio->core.tne) + outl(*((u32*)gpio->core.tne), gpiobase + GPIO_SC_TNE); + if (gpio->core.ts) + outl(*((u32*)gpio->core.ts), gpiobase + GPIO_SC_TS); + + /* GPIO SUS Well Set 1 */ + if (gpio->sus.level) + outl(*((u32*)gpio->sus.level), gpiobase + GPIO_SUS_GP_LVL); + if (gpio->sus.mode) + outl(*((u32*)gpio->sus.mode), gpiobase + GPIO_SUS_USE_SEL); + if (gpio->sus.direction) + outl(*((u32*)gpio->sus.direction), gpiobase + GPIO_SUS_IO_SEL); + if (gpio->sus.tpe) + outl(*((u32*)gpio->sus.tpe), gpiobase + GPIO_SUS_TPE); + if (gpio->sus.tne) + outl(*((u32*)gpio->sus.tne), gpiobase + GPIO_SUS_TNE); + if (gpio->sus.ts) + outl(*((u32*)gpio->sus.ts), gpiobase + GPIO_SUS_TS); + if (gpio->sus.we) + outl(*((u32*)gpio->sus.we), gpiobase + GPIO_SUS_WE); + + /* GPIO PAD settings */ + /* CFIO Core Well Set 1 */ + if ((gpio->core.cfio_init != NULL) || (gpio->core.cfio_entrynum != 0)) { + write32(cfiobase + 0x0700, (u32)0x01001002); + for(cfio_cnt = 0; cfio_cnt < gpio->core.cfio_entrynum; cfio_cnt++) { + if (!((u32)gpio->core.cfio_init[cfio_cnt].pad_conf_0)) + continue; + write32(cfiobase + CFIO_PAD_CONF0 + (16*cfio_cnt), (u32)gpio->core.cfio_init[cfio_cnt].pad_conf_0); + write32(cfiobase + CFIO_PAD_CONF1 + (16*cfio_cnt), (u32)gpio->core.cfio_init[cfio_cnt].pad_conf_1); + write32(cfiobase + CFIO_PAD_VAL + (16*cfio_cnt), (u32)gpio->core.cfio_init[cfio_cnt].pad_val); + write32(cfiobase + CFIO_PAD_DFT + (16*cfio_cnt), (u32)gpio->core.cfio_init[cfio_cnt].pad_dft); + } + write32(cfiobase + 0x0700, (u32)0x01041002); + } + + /* CFIO SUS Well Set 1 */ + if ((gpio->sus.cfio_init != NULL) || (gpio->sus.cfio_entrynum != 0)) { + write32(cfiobase + 0x1700, (u32)0x01001002); + for(cfio_cnt = 0; cfio_cnt < gpio->sus.cfio_entrynum; cfio_cnt++) { + if (!((u32)gpio->sus.cfio_init[cfio_cnt].pad_conf_0)) + continue; + write32(cfiobase + CFIO_PAD_CONF0 + 0x1000 + (16*cfio_cnt), (u32)gpio->sus.cfio_init[cfio_cnt].pad_conf_0); + write32(cfiobase + CFIO_PAD_CONF1 + 0x1000 + (16*cfio_cnt), (u32)gpio->sus.cfio_init[cfio_cnt].pad_conf_1); + write32(cfiobase + CFIO_PAD_VAL + 0x1000 + (16*cfio_cnt), (u32)gpio->sus.cfio_init[cfio_cnt].pad_val); + write32(cfiobase + CFIO_PAD_DFT + 0x1000 + (16*cfio_cnt), (u32)gpio->sus.cfio_init[cfio_cnt].pad_dft); + } + write32(cfiobase + 0x1700, (u32)0x01041002); + } +} + +int get_gpio(int gpio_num) +{ + u16 gpio_base = pci_read_config16(SOC_LPC_DEV, GBASE) & ~0xf; + int bit; + + if (gpio_num > MAX_GPIO_NUMBER) + return 0; /* Ignore wrong gpio numbers. */ + + bit = gpio_num % 32; + + return (inl(gpio_base + GPIO_SC_USE_SEL) >> bit) & 1; +} |