mainboard.c

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/* SPDX-License-Identifier: GPL-2.0-only */
 
#include <console/console.h>
#include <device/device.h>
#include <arch/io.h>
#include <drivers/intel/gma/int15.h>
#include <ec/acpi/ec.h>
 
#include "m3885.h"
 
#define DUMP_RUNTIME_REGISTERS 0
 
static void backlight_enable(void)
{
        printk(BIOS_DEBUG, "Display I/O: 0x%02x\n", inb(0x60f));
}
 
#if DUMP_RUNTIME_REGISTERS
static void dump_runtime_registers(void)
{
        int i;
 
        printk(BIOS_DEBUG, "SuperIO runtime register block:\n");
        for (i = 0; i < 0x10; i++)
                printk(BIOS_DEBUG, "%02x ", i);
        printk(BIOS_DEBUG, "\n");
        for (i = 0; i < 0x10; i++)
                printk(BIOS_DEBUG, "%02x ", inb(0x600 +i));
        printk(BIOS_DEBUG, "\n");
}
#endif
 
static void mainboard_final(struct device *dev)
{
        /* Enable Dummy DCC ON# for DVI */
        printk(BIOS_DEBUG, "Laptop handling...\n");
        outb(inb(0x60f) & ~(1 << 5), 0x60f);
}
 
static void mainboard_enable(struct device *dev)
{
        /* Configure the MultiKey controller */
 
        /* Enable LCD Backlight */
        backlight_enable();
 
        /* Disable Dummy DCC -> GP45 = 1 */
        outb(inb(0x60f) | (1 << 5), 0x60f);
 
        /* LCD panel type is SIO GPIO40-43 */
        install_intel_vga_int15_handler(GMA_INT15_ACTIVE_LFP_INT_LVDS, GMA_INT15_PANEL_FIT_DEFAULT, GMA_INT15_BOOT_DISPLAY_DEFAULT, 3);
 
#if DUMP_RUNTIME_REGISTERS
        dump_runtime_registers();
#endif
 
        dev->ops->final = mainboard_final;
}
 
struct chip_operations mainboard_ops = {
        .enable_dev = mainboard_enable,
};