ast2050.c

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/* SPDX-License-Identifier: GPL-2.0-only */
 
#include <arch/io.h>
#include <edid.h>
#include <console/console.h>
#include <device/device.h>
#include <device/pci.h>
#include <device/pci_ids.h>
#include <pc80/vga.h>
 
#include "../common/aspeed_coreboot.h"
#include "../common/ast_drv.h"
 
static void aspeed_ast2050_read_resources(struct device *dev)
{
        /* Reserve VGA regions */
        mmio_resource(dev, 3, 0xa0000 >> 10, 0x1ffff >> 10);
 
        /* Run standard resource read routine */
        pci_dev_read_resources(dev);
}
 
static void aspeed_ast2050_init(struct device *dev)
{
        struct drm_device drm_dev;
 
        drm_dev.pdev = dev;
 
        printk(BIOS_INFO, "ASpeed AST2050: initializing video device\n");
        ast_driver_load(&drm_dev, 0);
 
        /* Unlock extended configuration registers */
        outb(0x80, 0x3d4); outb(0xa8, 0x3d5);
 
        /* Set CRT Request Threshold */
        outb(0xa6, 0x3d4); outb(0x2f, 0x3d5);
        outb(0xa7, 0x3d4); outb(0x3f, 0x3d5);
 
        if (CONFIG(VGA_TEXT_FRAMEBUFFER)) {
                /* Initialize standard VGA text mode */
                vga_io_init();
 
                vga_textmode_init();
                printk(BIOS_INFO, "ASpeed VGA text mode initialized\n");
 
                /* if we don't have console, at least print something... */
                vga_line_write(0, "ASpeed VGA text mode initialized");
        } else if (CONFIG(GENERIC_LINEAR_FRAMEBUFFER)) {
                ast_driver_framebuffer_init(&drm_dev, 0);
                printk(BIOS_INFO, "ASpeed high resolution framebuffer initialized\n");
        }
}
 
static struct device_operations aspeed_ast2050_ops  = {
        .read_resources   = aspeed_ast2050_read_resources,
        .set_resources    = pci_dev_set_resources,
        .enable_resources = pci_dev_enable_resources,
        .init             = aspeed_ast2050_init,
};
 
static const struct pci_driver aspeed_ast2050_driver __pci_driver = {
        .ops    = &aspeed_ast2050_ops,
        .vendor = PCI_VID_ASPEED,
        .device = PCI_DID_ASPEED_AST2050_VGA,
};