superio.c

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/* SPDX-License-Identifier: GPL-2.0-or-later */
 
#include <console/console.h>
#include <device/device.h>
#include <device/pnp.h>
#include <pc80/keyboard.h>
#include <option.h>
#include <superio/conf_mode.h>
 
#include "nct5572d.h"
 
#define MAINBOARD_POWER_OFF     0
#define MAINBOARD_POWER_ON      1
#define MAINBOARD_POWER_KEEP    2
 
static void nct5572d_init(struct device *dev)
{
        uint8_t byte;
        uint8_t power_status;
        uint8_t mouse_detected;
 
        if (!dev->enabled)
                return;
 
        switch (dev->path.pnp.device) {
        /* TODO: Might potentially need code for HWM or FDC etc. */
        case NCT5572D_KBC:
                /* Enable mouse controller */
                pnp_enter_conf_mode(dev);
                byte = pnp_read_config(dev, 0x2a);
                byte &= ~(0x1 << 1);
                pnp_write_config(dev, 0x2a, byte);
                pnp_exit_conf_mode(dev);
 
                mouse_detected = pc_keyboard_init(PROBE_AUX_DEVICE);
 
                if (!mouse_detected) {
                        printk(BIOS_INFO, "%s: Disable mouse controller.\n",
                                        __func__);
                        pnp_enter_conf_mode(dev);
                        byte = pnp_read_config(dev, 0x2a);
                        byte |= 0x1 << 1;
                        pnp_write_config(dev, 0x2a, byte);
                        pnp_exit_conf_mode(dev);
                }
                break;
        case NCT5572D_ACPI:
                /* Set power state after power fail */
                power_status = get_uint_option("power_on_after_fail",
                                CONFIG_MAINBOARD_POWER_FAILURE_STATE);
                pnp_enter_conf_mode(dev);
                pnp_set_logical_device(dev);
                byte = pnp_read_config(dev, 0xe4);
                byte &= ~0x60;
                if (power_status == MAINBOARD_POWER_ON)
                        byte |= (0x1 << 5);
                else if (power_status == MAINBOARD_POWER_KEEP)
                        byte |= (0x2 << 5);
                pnp_write_config(dev, 0xe4, byte);
                pnp_exit_conf_mode(dev);
                printk(BIOS_INFO, "set power %s after power fail\n", power_status ? "on" : "off");
                break;
        }
}
 
static struct device_operations ops = {
        .read_resources   = pnp_read_resources,
        .set_resources    = pnp_set_resources,
        .enable_resources = pnp_enable_resources,
        .enable           = pnp_alt_enable,
        .init             = nct5572d_init,
        .ops_pnp_mode     = &pnp_conf_mode_8787_aa,
};
 
static struct pnp_info pnp_dev_info[] = {
        { NULL, NCT5572D_FDC}, /* no pins, removed from datasheet */
        { NULL, NCT5572D_PP}, /* no pins, removed from datasheet */
        { NULL, NCT5572D_SP1, PNP_IO0 | PNP_IRQ0, 0x0FF8, },
        { NULL, NCT5572D_IR, PNP_IO0 | PNP_IRQ0, 0x0FF8, },
        { NULL, NCT5572D_KBC, PNP_IO0 | PNP_IO1 | PNP_IRQ0 | PNP_IRQ1,
                0x0FFF, 0x0FFF, },
        { NULL, NCT5572D_CIR, PNP_IO0 | PNP_IRQ0, 0x0FF8, },
        { NULL, NCT5572D_WDT1},
        { NULL, NCT5572D_ACPI},
        { NULL, NCT5572D_HWM_TSI_FPLED, PNP_IO0 | PNP_IO1 | PNP_IRQ0,
                0x0FFE, 0x0FFE, },
        { NULL, NCT5572D_PECI},
        { NULL, NCT5572D_SUSLED},
        { NULL, NCT5572D_CIRWKUP, PNP_IO0 | PNP_IRQ0, 0x0FF8, },
        { NULL, NCT5572D_GPIO_PP_OD},
        { NULL, NCT5572D_GPIO2},
        { NULL, NCT5572D_GPIO3},
        { NULL, NCT5572D_GPIO4}, /* no pins, removed from datasheet */
        { NULL, NCT5572D_GPIO5},
        { NULL, NCT5572D_GPIO6},
        { NULL, NCT5572D_GPIO7}, /* no pins, removed from datasheet */
        { NULL, NCT5572D_GPIO8},
        { NULL, NCT5572D_GPIO9},
};
 
static void enable_dev(struct device *dev)
{
        pnp_enable_devices(dev, &ops, ARRAY_SIZE(pnp_dev_info), pnp_dev_info);
}
 
struct chip_operations superio_nuvoton_nct5572d_ops = {
        CHIP_NAME("NUVOTON NCT5572D Super I/O")
        .enable_dev = enable_dev,
};