rce822.c

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/* SPDX-License-Identifier: GPL-2.0-only */
 
#include <device/device.h>
#include <device/pci.h>
#include <device/pci_ids.h>
#include <device/pci_ops.h>
#include "chip.h"
 
static void rce822_enable(struct device *dev)
{
        struct drivers_ricoh_rce822_config *config = dev->chip_info;
 
        pci_write_config8(dev, 0xca, 0x57);
        pci_write_config8(dev, 0xcb, config->disable_mask);
        pci_write_config8(dev, 0xca, 0x00);
}
 
static void rce822_init(struct device *dev)
{
        struct drivers_ricoh_rce822_config *config = dev->chip_info;
 
        pci_write_config8(dev, 0xf9, 0xfc);
        pci_write_config8(dev, 0xfb, config->sdwppol << 1);
        pci_write_config8(dev, 0xf9, 0x00);
}
 
static void rce822_set_subsystem(struct device *dev, unsigned int vendor,
                                 unsigned int device)
{
        if (!vendor || !device) {
                pci_write_config32(dev, 0xac,
                                pci_read_config32(dev, PCI_VENDOR_ID));
        } else {
                pci_write_config32(dev, 0xac,
                                ((device & 0xffff) << 16) | (vendor & 0xffff));
        }
}
 
static struct pci_operations lops_pci = {
        .set_subsystem  = rce822_set_subsystem,
};
 
static struct device_operations rce822_ops = {
        .read_resources         = pci_dev_read_resources,
        .set_resources          = pci_dev_set_resources,
        .enable_resources       = pci_dev_enable_resources,
        .init                   = rce822_init,
        .enable                 = rce822_enable,
        .ops_pci                = &lops_pci,
};
 
static const unsigned short pci_device_ids[] = { 0xe822, 0xe823, 0 };
 
static const struct pci_driver rce822 __pci_driver = {
        .ops     = &rce822_ops,
        .vendor  = PCI_VID_RICOH,
        .devices = pci_device_ids,
};
 
struct chip_operations drivers_ricoh_rce822_ops = {
        CHIP_NAME("RICOH RCE822")
};