diff options
Diffstat (limited to 'src/superio/smsc/sch4037/superio.c')
| -rw-r--r-- | src/superio/smsc/sch4037/superio.c | 123 |
1 files changed, 123 insertions, 0 deletions
diff --git a/src/superio/smsc/sch4037/superio.c b/src/superio/smsc/sch4037/superio.c new file mode 100644 index 0000000000..eebcacd60e --- /dev/null +++ b/src/superio/smsc/sch4037/superio.c @@ -0,0 +1,123 @@ +/* + * This file is part of the coreboot project. + * + * Copyright (C) 2012 Advanced Micro Devices, 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. + * + * 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 + */ + +/* RAM driver for the SMSC KBC1100 Super I/O chip */ + +#include <arch/io.h> +#include <device/device.h> +#include <device/pnp.h> +#include <console/console.h> +#include <device/smbus.h> +#include <string.h> +#include <bitops.h> +#include <uart8250.h> +#include <pc80/keyboard.h> +#include <stdlib.h> +#include "chip.h" +#include "sch4037.h" + +/* Forward declarations */ +static void enable_dev(device_t dev); +static void sch4037_pnp_set_resources(device_t dev); +static void sch4037_pnp_enable_resources(device_t dev); +static void sch4037_pnp_enable(device_t dev); +static void sch4037_init(device_t dev); + +static void pnp_enter_conf_state(device_t dev); +static void pnp_exit_conf_state(device_t dev); + +struct chip_operations superio_smsc_sch4037_ops = { + CHIP_NAME("SMSC SCH4037 Super I/O") + .enable_dev = enable_dev, +}; + +static struct device_operations ops = { + .read_resources = pnp_read_resources, + .set_resources = sch4037_pnp_set_resources, + .enable_resources = sch4037_pnp_enable_resources, + .enable = sch4037_pnp_enable, + .init = sch4037_init, +}; + +static struct pnp_info pnp_dev_info[] = { + { &ops, SCH4037_KBC, PNP_IO0 | PNP_IO1 | PNP_IRQ0 | PNP_IRQ1, { 0x7ff, 0 }, { 0x7ff, 0x4}, }, +}; + +static void enable_dev(device_t dev) +{ + printk(BIOS_SPEW, "file '%s',line %d, %s()\n", __FILE__, __LINE__, __func__); + pnp_enable_devices(dev, &pnp_ops, ARRAY_SIZE(pnp_dev_info), pnp_dev_info); +} + +static void sch4037_pnp_set_resources(device_t dev) +{ + pnp_enter_conf_state(dev); + pnp_set_resources(dev); + pnp_exit_conf_state(dev); +} + +static void sch4037_pnp_enable_resources(device_t dev) +{ + pnp_enter_conf_state(dev); + pnp_enable_resources(dev); + pnp_exit_conf_state(dev); +} + +static void sch4037_pnp_enable(device_t dev) +{ + pnp_enter_conf_state(dev); + pnp_set_logical_device(dev); + + if(dev->enabled) { + pnp_set_enable(dev, 1); + } + else { + pnp_set_enable(dev, 0); + } + pnp_exit_conf_state(dev); +} + +static void sch4037_init(device_t dev) +{ + struct superio_smsc_sch4037_config *conf = dev->chip_info; + struct resource *res0, *res1; + + if (!dev->enabled) { + return; + } + + switch(dev->path.pnp.device) { + + case SCH4037_KBC: + res0 = find_resource(dev, PNP_IDX_IO0); + res1 = find_resource(dev, PNP_IDX_IO1); + pc_keyboard_init(&conf->keyboard); + break; + } +} + +static void pnp_enter_conf_state(device_t dev) +{ + outb(0x55, dev->path.pnp.port); +} + +static void pnp_exit_conf_state(device_t dev) +{ + outb(0xaa, dev->path.pnp.port); +} |