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// SPDX-License-Identifier: GPL-2.0-only
/*
* Copyright (C) 2006-2007 PA Semi, Inc
*
* SMBus host driver for PA Semi PWRficient
*/
#include <linux/module.h>
#include <linux/pci.h>
#include <linux/kernel.h>
#include <linux/stddef.h>
#include <linux/sched.h>
#include <linux/i2c.h>
#include <linux/delay.h>
#include <linux/slab.h>
#include <linux/io.h>
#include "i2c-pasemi-core.h"
#define CLK_100K_DIV 84
#define CLK_400K_DIV 21
static struct pci_driver pasemi_smb_pci_driver;
static int pasemi_smb_pci_probe(struct pci_dev *dev,
const struct pci_device_id *id)
{
struct pasemi_smbus *smbus;
unsigned long base;
int size;
int error;
if (!(pci_resource_flags(dev, 0) & IORESOURCE_IO))
return -ENODEV;
smbus = devm_kzalloc(&dev->dev, sizeof(*smbus), GFP_KERNEL);
if (!smbus)
return -ENOMEM;
smbus->dev = &dev->dev;
base = pci_resource_start(dev, 0);
size = pci_resource_len(dev, 0);
smbus->clk_div = CLK_100K_DIV;
/*
* The original PASemi PCI controllers don't have a register for
* their HW revision.
*/
smbus->hw_rev = PASEMI_HW_REV_PCI;
if (!devm_request_region(&dev->dev, base, size,
pasemi_smb_pci_driver.name))
return -EBUSY;
smbus->ioaddr = pcim_iomap(dev, 0, 0);
if (!smbus->ioaddr)
return -EBUSY;
error = pasemi_i2c_common_probe(smbus);
if (error)
return error;
pci_set_drvdata(dev, smbus);
return 0;
}
static const struct pci_device_id pasemi_smb_pci_ids[] = {
{ PCI_DEVICE(0x1959, 0xa003) },
{ 0, }
};
MODULE_DEVICE_TABLE(pci, pasemi_smb_pci_ids);
static struct pci_driver pasemi_smb_pci_driver = {
.name = "i2c-pasemi",
.id_table = pasemi_smb_pci_ids,
.probe = pasemi_smb_pci_probe,
};
module_pci_driver(pasemi_smb_pci_driver);
MODULE_LICENSE("GPL");
MODULE_AUTHOR("Olof Johansson <olof@lixom.net>");
MODULE_DESCRIPTION("PA Semi PWRficient SMBus driver");
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