// SPDX-License-Identifier: GPL-2.0-or-later /* Copyright (c) 2003 Mark M. Hoffman <[email protected]> */ /* This module must be considered BETA unless and until the chipset manufacturer releases a datasheet. The register definitions are based on the SiS630. This module relies on quirk_sis_96x_smbus (drivers/pci/quirks.c) for just about every machine for which users have reported. If this module isn't detecting your 96x south bridge, have a look there. We assume there can only be one SiS96x with one SMBus interface. */ #include <linux/module.h> #include <linux/pci.h> #include <linux/kernel.h> #include <linux/delay.h> #include <linux/stddef.h> #include <linux/ioport.h> #include <linux/i2c.h> #include <linux/acpi.h> #include <linux/io.h> /* base address register in PCI config space */ #define SIS96x_BAR … /* SiS96x SMBus registers */ #define SMB_STS … #define SMB_EN … #define SMB_CNT … #define SMB_HOST_CNT … #define SMB_ADDR … #define SMB_CMD … #define SMB_PCOUNT … #define SMB_COUNT … #define SMB_BYTE … #define SMB_DEV_ADDR … #define SMB_DB0 … #define SMB_DB1 … #define SMB_SAA … /* register count for request_region */ #define SMB_IOSIZE … /* Other settings */ #define MAX_TIMEOUT … /* SiS96x SMBus constants */ #define SIS96x_QUICK … #define SIS96x_BYTE … #define SIS96x_BYTE_DATA … #define SIS96x_WORD_DATA … #define SIS96x_PROC_CALL … #define SIS96x_BLOCK_DATA … static struct pci_driver sis96x_driver; static struct i2c_adapter sis96x_adapter; static u16 sis96x_smbus_base; static inline u8 sis96x_read(u8 reg) { … } static inline void sis96x_write(u8 reg, u8 data) { … } /* Execute a SMBus transaction. int size is from SIS96x_QUICK to SIS96x_BLOCK_DATA */ static int sis96x_transaction(int size) { … } /* Return negative errno on error. */ static s32 sis96x_access(struct i2c_adapter * adap, u16 addr, unsigned short flags, char read_write, u8 command, int size, union i2c_smbus_data * data) { … } static u32 sis96x_func(struct i2c_adapter *adapter) { … } static const struct i2c_algorithm smbus_algorithm = …; static struct i2c_adapter sis96x_adapter = …; static const struct pci_device_id sis96x_ids[] = …; MODULE_DEVICE_TABLE (pci, sis96x_ids); static int sis96x_probe(struct pci_dev *dev, const struct pci_device_id *id) { … } static void sis96x_remove(struct pci_dev *dev) { … } static struct pci_driver sis96x_driver = …; module_pci_driver(…) …; MODULE_AUTHOR(…) …; MODULE_DESCRIPTION(…) …; MODULE_LICENSE(…) …;
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