cardbus.c

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/* SPDX-License-Identifier: GPL-2.0-or-later */
 
#include <device/device.h>
#include <device/pci.h>
#include <device/pci_ops.h>
#include <console/console.h>
#include <device/cardbus.h>
#include "pci7420.h"
#include "chip.h"
 
static void pci7420_cardbus_init(struct device *dev)
{
        u8 reg8;
        u16 reg16;
        u32 reg32;
 
        struct southbridge_ti_pci7420_config *config = dev->chip_info;
        int smartcard_enabled = 0;
 
        printk(BIOS_DEBUG, "TI PCI7420/7620 init\n");
 
        if (!config) {
                printk(BIOS_DEBUG, "PCI7420: No configuration found.\n");
        } else {
                smartcard_enabled = config->smartcard_enabled;
        }
 
        reg32 = pci_read_config32(dev, SYSCTL);
        reg32 |= RIMUX;
        pci_write_config32(dev, SYSCTL, reg32);
 
        /* Enable SPKROUT */
        reg8 = pci_read_config8(dev, CARDCTL);
        reg8 |= SPKROUTEN;
        pci_write_config8(dev, CARDCTL, reg8);
 
        /* Power switch select and FM disable */
        reg16 = pci_read_config16(dev, GENCTL);
        reg16 |= P12V_SW_SEL; // 12V capable power switch
        if (smartcard_enabled == 0)
                reg16 |= DISABLE_FM;
        pci_write_config16(dev, GENCTL, reg16);
 
        /* Multifunction routing status */
        pci_write_config32(dev, MFUNC, 0x018a1b22);
}
 
static void pci7420_cardbus_read_resources(struct device *dev)
{
        cardbus_read_resources(dev);
}
 
static void pci7420_cardbus_set_resources(struct device *dev)
{
        printk(BIOS_DEBUG, "%s In set resources\n",dev_path(dev));
 
        pci_dev_set_resources(dev);
 
        printk(BIOS_DEBUG, "%s done set resources\n",dev_path(dev));
}
 
static struct device_operations ti_pci7420_ops = {
        .read_resources   = pci7420_cardbus_read_resources,
        .set_resources    = pci7420_cardbus_set_resources,
        .enable_resources = cardbus_enable_resources,
        .init             = pci7420_cardbus_init,
        .scan_bus         = pci_scan_bridge,
};
 
static const struct pci_driver ti_pci7420_driver __pci_driver = {
        .ops    = &ti_pci7420_ops,
        .vendor = 0x104c,
        .device = 0xac8e,
};
 
static const struct pci_driver ti_pci7620_driver __pci_driver = {
        .ops    = &ti_pci7420_ops,
        .vendor = 0x104c,
        .device = 0xac8d,
};
 
struct chip_operations southbridge_ti_pci7420_ops = {
        CHIP_NAME("Texas Instruments PCI7420/7620 Cardbus Controller")
};