3     SMBus driver for nVidia nForce2 MCP
9     SMBus 2.0 driver for AMD-8111 IO-Hub
35 /* Note: we assume there can only be one nForce2, with two SMBus interfaces */
51 MODULE_DESCRIPTION("nForce2/3/4/5xx SMBus driver");
64  * nVidia nForce2 SMBus control register definitions
72  * ACPI 2.0 chapter 13 SMBus 2.0 EC register model
74 #define NVIDIA_SMB_PRTCL	(smbus->base + 0x00)	/* protocol, PEC */
75 #define NVIDIA_SMB_STS		(smbus->base + 0x01)	/* status */
76 #define NVIDIA_SMB_ADDR		(smbus->base + 0x02)	/* address */
77 #define NVIDIA_SMB_CMD		(smbus->base + 0x03)	/* command */
78 #define NVIDIA_SMB_DATA		(smbus->base + 0x04)	/* 32 data registers */
79 #define NVIDIA_SMB_BCNT		(smbus->base + 0x24)	/* number of data
81 #define NVIDIA_SMB_STATUS_ABRT	(smbus->base + 0x3c)	/* register used to
84 #define NVIDIA_SMB_CTRL		(smbus->base + 0x3e)	/* control register */
106 /* We disable the second SMBus channel on these boards */
121    SMBus channel */
136 	struct nforce2_smbus *smbus = adap->algo_data;  in nforce2_abort()  local
149 		dev_err(&adap->dev, "Can't reset the smbus\n");  in nforce2_abort()
155 	struct nforce2_smbus *smbus = adap->algo_data;  in nforce2_check_status()  local
165 		dev_dbg(&adap->dev, "SMBus Timeout!\n");  in nforce2_check_status()
166 		if (smbus->can_abort)  in nforce2_check_status()
182 	struct nforce2_smbus *smbus = adap->algo_data;  in nforce2_access()  local
319 			     struct nforce2_smbus *smbus, const char *name)  in nforce2_probe_smb()  argument
323 	smbus->base = pci_resource_start(dev, bar);  in nforce2_probe_smb()
324 	if (smbus->base) {  in nforce2_probe_smb()
325 		smbus->size = pci_resource_len(dev, bar);  in nforce2_probe_smb()
337 		smbus->base = iobase & PCI_BASE_ADDRESS_IO_MASK;  in nforce2_probe_smb()
338 		smbus->size = 64;  in nforce2_probe_smb()
341 	error = acpi_check_region(smbus->base, smbus->size,  in nforce2_probe_smb()
346 	if (!request_region(smbus->base, smbus->size, nforce2_driver.name)) {  in nforce2_probe_smb()
347 		dev_err(&smbus->adapter.dev, "Error requesting region %02x .. %02X for %s\n",  in nforce2_probe_smb()
348 			smbus->base, smbus->base+smbus->size-1, name);  in nforce2_probe_smb()
351 	smbus->adapter.owner = THIS_MODULE;  in nforce2_probe_smb()
352 	smbus->adapter.class = I2C_CLASS_HWMON;  in nforce2_probe_smb()
353 	smbus->adapter.algo = &smbus_algorithm;  in nforce2_probe_smb()
354 	smbus->adapter.algo_data = smbus;  in nforce2_probe_smb()
355 	smbus->adapter.dev.parent = &dev->dev;  in nforce2_probe_smb()
356 	snprintf(smbus->adapter.name, sizeof(smbus->adapter.name),  in nforce2_probe_smb()
357 		"SMBus nForce2 adapter at %04x", smbus->base);  in nforce2_probe_smb()
359 	error = i2c_add_adapter(&smbus->adapter);  in nforce2_probe_smb()
361 		release_region(smbus->base, smbus->size);  in nforce2_probe_smb()
364 	dev_info(&smbus->adapter.dev, "nForce2 SMBus adapter at %#x\n",  in nforce2_probe_smb()
365 		smbus->base);  in nforce2_probe_smb()
375 	/* we support 2 SMBus adapters */  in nforce2_probe()
391 	/* SMBus adapter 1 */  in nforce2_probe()
396 	/* SMBus adapter 2 */  in nforce2_probe()