3  * SMBus 2.0 driver for AMD-8111 IO-Hub.
21 MODULE_DESCRIPTION("AMD8111 SMBus 2.0 driver");
68 static int amd_ec_wait_write(struct amd_smbus *smbus)  in amd_ec_wait_write()  argument
72 	while ((inb(smbus->base + AMD_EC_SC) & AMD_EC_SC_IBF) && --timeout)  in amd_ec_wait_write()
76 		dev_warn(&smbus->dev->dev,  in amd_ec_wait_write()
84 static int amd_ec_wait_read(struct amd_smbus *smbus)  in amd_ec_wait_read()  argument
88 	while ((~inb(smbus->base + AMD_EC_SC) & AMD_EC_SC_OBF) && --timeout)  in amd_ec_wait_read()
92 		dev_warn(&smbus->dev->dev,  in amd_ec_wait_read()
100 static int amd_ec_read(struct amd_smbus *smbus, unsigned char address,  in amd_ec_read()  argument
105 	status = amd_ec_wait_write(smbus);  in amd_ec_read()
108 	outb(AMD_EC_CMD_RD, smbus->base + AMD_EC_CMD);  in amd_ec_read()
110 	status = amd_ec_wait_write(smbus);  in amd_ec_read()
113 	outb(address, smbus->base + AMD_EC_DATA);  in amd_ec_read()
115 	status = amd_ec_wait_read(smbus);  in amd_ec_read()
118 	*data = inb(smbus->base + AMD_EC_DATA);  in amd_ec_read()
123 static int amd_ec_write(struct amd_smbus *smbus, unsigned char address,  in amd_ec_write()  argument
128 	status = amd_ec_wait_write(smbus);  in amd_ec_write()
131 	outb(AMD_EC_CMD_WR, smbus->base + AMD_EC_CMD);  in amd_ec_write()
133 	status = amd_ec_wait_write(smbus);  in amd_ec_write()
136 	outb(address, smbus->base + AMD_EC_DATA);  in amd_ec_write()
138 	status = amd_ec_wait_write(smbus);  in amd_ec_write()
141 	outb(data, smbus->base + AMD_EC_DATA);  in amd_ec_write()
147  * ACPI 2.0 chapter 13 SMBus 2.0 EC register model
193 	struct amd_smbus *smbus = adap->algo_data;  in amd8111_access()  local
209 			status = amd_ec_write(smbus, AMD_SMB_CMD,  in amd8111_access()
218 		status = amd_ec_write(smbus, AMD_SMB_CMD, command);  in amd8111_access()
222 			status = amd_ec_write(smbus, AMD_SMB_DATA,  in amd8111_access()
231 		status = amd_ec_write(smbus, AMD_SMB_CMD, command);  in amd8111_access()
235 			status = amd_ec_write(smbus, AMD_SMB_DATA,  in amd8111_access()
239 			status = amd_ec_write(smbus, AMD_SMB_DATA + 1,  in amd8111_access()
248 		status = amd_ec_write(smbus, AMD_SMB_CMD, command);  in amd8111_access()
254 			status = amd_ec_write(smbus, AMD_SMB_BCNT, len);  in amd8111_access()
259 					amd_ec_write(smbus, AMD_SMB_DATA + i,  in amd8111_access()
271 		status = amd_ec_write(smbus, AMD_SMB_CMD, command);  in amd8111_access()
274 		status = amd_ec_write(smbus, AMD_SMB_BCNT, len);  in amd8111_access()
280 					amd_ec_write(smbus, AMD_SMB_DATA + i,  in amd8111_access()
289 		status = amd_ec_write(smbus, AMD_SMB_CMD, command);  in amd8111_access()
292 		status = amd_ec_write(smbus, AMD_SMB_DATA,  in amd8111_access()
296 		status = amd_ec_write(smbus, AMD_SMB_DATA + 1,  in amd8111_access()
307 		status = amd_ec_write(smbus, AMD_SMB_CMD, command);  in amd8111_access()
310 		status = amd_ec_write(smbus, AMD_SMB_BCNT, len);  in amd8111_access()
314 			status = amd_ec_write(smbus, AMD_SMB_DATA + i,  in amd8111_access()
328 	status = amd_ec_write(smbus, AMD_SMB_ADDR, addr << 1);  in amd8111_access()
331 	status = amd_ec_write(smbus, AMD_SMB_PRTCL, protocol);  in amd8111_access()
335 	status = amd_ec_read(smbus, AMD_SMB_STS, temp + 0);  in amd8111_access()
341 		status = amd_ec_read(smbus, AMD_SMB_STS, temp + 0);  in amd8111_access()
348 		status = amd_ec_read(smbus, AMD_SMB_STS, temp + 0);  in amd8111_access()
362 		status = amd_ec_read(smbus, AMD_SMB_DATA, &data->byte);  in amd8111_access()
369 		status = amd_ec_read(smbus, AMD_SMB_DATA, temp + 0);  in amd8111_access()
372 		status = amd_ec_read(smbus, AMD_SMB_DATA + 1, temp + 1);  in amd8111_access()
380 		status = amd_ec_read(smbus, AMD_SMB_BCNT, &len);  in amd8111_access()
387 			status = amd_ec_read(smbus, AMD_SMB_DATA + i,  in amd8111_access()
424 	struct amd_smbus *smbus;  in amd8111_probe()  local
430 	smbus = kzalloc(sizeof(struct amd_smbus), GFP_KERNEL);  in amd8111_probe()
431 	if (!smbus)  in amd8111_probe()
434 	smbus->dev = dev;  in amd8111_probe()
435 	smbus->base = pci_resource_start(dev, 0);  in amd8111_probe()
436 	smbus->size = pci_resource_len(dev, 0);  in amd8111_probe()
444 	if (!request_region(smbus->base, smbus->size, amd8111_driver.name)) {  in amd8111_probe()
449 	smbus->adapter.owner = THIS_MODULE;  in amd8111_probe()
450 	snprintf(smbus->adapter.name, sizeof(smbus->adapter.name),  in amd8111_probe()
451 		"SMBus2 AMD8111 adapter at %04x", smbus->base);  in amd8111_probe()
452 	smbus->adapter.class = I2C_CLASS_HWMON;  in amd8111_probe()
453 	smbus->adapter.algo = &smbus_algorithm;  in amd8111_probe()
454 	smbus->adapter.algo_data = smbus;  in amd8111_probe()
457 	smbus->adapter.dev.parent = &dev->dev;  in amd8111_probe()
459 	pci_write_config_dword(smbus->dev, AMD_PCI_MISC, 0);  in amd8111_probe()
460 	error = i2c_add_adapter(&smbus->adapter);  in amd8111_probe()
464 	pci_set_drvdata(dev, smbus);  in amd8111_probe()
468 	release_region(smbus->base, smbus->size);  in amd8111_probe()
470 	kfree(smbus);  in amd8111_probe()
476 	struct amd_smbus *smbus = pci_get_drvdata(dev);  in amd8111_remove()  local
478 	i2c_del_adapter(&smbus->adapter);  in amd8111_remove()
479 	release_region(smbus->base, smbus->size);  in amd8111_remove()
480 	kfree(smbus);  in amd8111_remove()