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/* SPDX-License-Identifier: GPL-2.0-or-later */
/* This file is part of the coreboot project. */
#include <device/device.h>
#include <device/pnp.h>
#include <superio/conf_mode.h>
#include <pc80/keyboard.h>
#include <superio/common/ssdt.h>
#include <acpi/acpi.h>
#include "ast2400.h"
#include "chip.h"
static void ast2400_init(struct device *dev)
{
struct superio_aspeed_ast2400_config *conf = dev->chip_info;
if (!dev->enabled)
return;
if (conf && conf->use_espi) {
pnp_enter_conf_mode(dev);
pnp_set_logical_device(dev);
/* In ESPI mode must write 0 to IRQ level on every LDN */
pnp_write_config(dev, 0x71, 0);
pnp_exit_conf_mode(dev);
}
switch (dev->path.pnp.device) {
case AST2400_KBC:
pc_keyboard_init(NO_AUX_DEVICE);
break;
}
}
#if CONFIG(HAVE_ACPI_TABLES)
/* Provide ACPI HIDs for generic Super I/O SSDT */
static const char *ast2400_acpi_hid(const struct device *dev)
{
/* Sanity checks */
if (dev->path.type != DEVICE_PATH_PNP)
return NULL;
if (dev->path.pnp.port == 0)
return NULL;
if ((dev->path.pnp.device & 0xff) > AST2400_MAILBOX)
return NULL;
switch (dev->path.pnp.device & 0xff) {
case AST2400_SUART1: /* fallthrough */
case AST2400_SUART2: /* fallthrough */
case AST2400_SUART3: /* fallthrough */
case AST2400_SUART4:
return ACPI_HID_COM;
case AST2400_KBC:
return ACPI_HID_KEYBOARD;
default:
return ACPI_HID_PNP;
}
}
#endif
static struct device_operations ops = {
.read_resources = pnp_read_resources,
.set_resources = pnp_set_resources,
.enable_resources = pnp_enable_resources,
.enable = pnp_enable,
.init = ast2400_init,
.ops_pnp_mode = &pnp_conf_mode_a5a5_aa,
#if CONFIG(HAVE_ACPI_TABLES)
.acpi_fill_ssdt = superio_common_fill_ssdt_generator,
.acpi_name = superio_common_ldn_acpi_name,
.acpi_hid = ast2400_acpi_hid,
#endif
};
static struct pnp_info pnp_dev_info[] = {
{ NULL, AST2400_SUART1, PNP_IO0 | PNP_IRQ0 | PNP_MSC0, 0xfff8, },
{ NULL, AST2400_SUART2, PNP_IO0 | PNP_IRQ0 | PNP_MSC0, 0xfff8, },
{ NULL, AST2400_SWC, PNP_IO0 | PNP_IO1 | PNP_IO2 | PNP_IO3
| PNP_IRQ0, 0xfff8, 0xfff8, 0xfff8, 0xfff8, },
{ NULL, AST2400_KBC, PNP_IO0 | PNP_IO1 | PNP_IRQ0 | PNP_IRQ1
| PNP_MSC0, 0xffff, 0xffff, },
{ NULL, AST2400_GPIO, PNP_IRQ0, }, // GPIO LDN has no IO Region
{ NULL, AST2400_SUART3, PNP_IO0 | PNP_IRQ0 | PNP_MSC0, 0xfff8, },
{ NULL, AST2400_SUART4, PNP_IO0 | PNP_IRQ0 | PNP_MSC0, 0xfff8, },
{ NULL, AST2400_ILPC2AHB, PNP_IRQ0 },
{ NULL, AST2400_MAILBOX, PNP_IO0 | PNP_IRQ0, 0xfffe, },
};
static void enable_dev(struct device *dev)
{
struct superio_aspeed_ast2400_config *conf = dev->chip_info;
if (conf && conf->use_espi) {
/* UART3 and UART4 are not usable in ESPI mode */
for (size_t i = 0; i < ARRAY_SIZE(pnp_dev_info); i++) {
if ((pnp_dev_info[i].function == AST2400_SUART3) ||
(pnp_dev_info[i].function == AST2400_SUART4))
pnp_dev_info[i].function = PNP_SKIP_FUNCTION;
}
}
pnp_enable_devices(dev, &ops, ARRAY_SIZE(pnp_dev_info),
pnp_dev_info);
}
struct chip_operations superio_aspeed_ast2400_ops = {
CHIP_NAME("ASpeed AST2400/AST2500 Super I/O")
.enable_dev = enable_dev,
};
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