i2c/busses/i2c-piix4.c

230 static bool piix4_sb800_use_mmio(struct pci_dev *PIIX4_dev)  in piix4_sb800_use_mmio()  argument
237 	return (PIIX4_dev->vendor == PCI_VENDOR_ID_AMD &&  in piix4_sb800_use_mmio()
238 		PIIX4_dev->device == PCI_DEVICE_ID_AMD_KERNCZ_SMBUS &&  in piix4_sb800_use_mmio()
239 		PIIX4_dev->revision >= 0x51);  in piix4_sb800_use_mmio()
242 static int piix4_setup(struct pci_dev *PIIX4_dev,  in piix4_setup()  argument
248 	if ((PIIX4_dev->vendor == PCI_VENDOR_ID_SERVERWORKS) &&  in piix4_setup()
249 	    (PIIX4_dev->device == PCI_DEVICE_ID_SERVERWORKS_CSB5))  in piix4_setup()
255 		dev_err(&PIIX4_dev->dev,  in piix4_setup()
262 			PIIX4_dev->vendor == PCI_VENDOR_ID_INTEL) {  in piix4_setup()
263 		dev_err(&PIIX4_dev->dev, "IBM system detected; this module "  in piix4_setup()
274 		pci_read_config_word(PIIX4_dev, SMBBA, &piix4_smba);  in piix4_setup()
277 			dev_err(&PIIX4_dev->dev, "SMBus base address "  in piix4_setup()
288 		dev_err(&PIIX4_dev->dev, "SMBus region 0x%x already in use!\n",  in piix4_setup()
293 	pci_read_config_byte(PIIX4_dev, SMBHSTCFG, &temp);  in piix4_setup()
298 		pci_write_config_byte(PIIX4_dev, SMBHSTCFG, temp & 0xfe);  in piix4_setup()
299 		pci_write_config_word(PIIX4_dev, SMBBA, piix4_smba);  in piix4_setup()
300 		pci_write_config_byte(PIIX4_dev, SMBHSTCFG, temp | 0x01);  in piix4_setup()
301 		dev_info(&PIIX4_dev->dev, "WARNING: SMBus interface set to "  in piix4_setup()
313 			pci_write_config_byte(PIIX4_dev, SMBHSTCFG,  in piix4_setup()
315 			dev_notice(&PIIX4_dev->dev,  in piix4_setup()
318 			dev_err(&PIIX4_dev->dev,  in piix4_setup()
326 		dev_dbg(&PIIX4_dev->dev, "Using IRQ for SMBus\n");  in piix4_setup()
328 		dev_dbg(&PIIX4_dev->dev, "Using SMI# for SMBus\n");  in piix4_setup()
330 		dev_err(&PIIX4_dev->dev, "Illegal Interrupt configuration "  in piix4_setup()
333 	pci_read_config_byte(PIIX4_dev, SMBREV, &temp);  in piix4_setup()
334 	dev_info(&PIIX4_dev->dev,  in piix4_setup()
341 static int piix4_setup_sb800_smba(struct pci_dev *PIIX4_dev,  in piix4_setup_sb800_smba()  argument
352 	mmio_cfg.use_mmio = piix4_sb800_use_mmio(PIIX4_dev);  in piix4_setup_sb800_smba()
353 	retval = piix4_sb800_region_request(&PIIX4_dev->dev, &mmio_cfg);  in piix4_setup_sb800_smba()
367 	piix4_sb800_region_release(&PIIX4_dev->dev, &mmio_cfg);  in piix4_setup_sb800_smba()
380 		dev_err(&PIIX4_dev->dev,  in piix4_setup_sb800_smba()
388 static int piix4_setup_sb800(struct pci_dev *PIIX4_dev,  in piix4_setup_sb800()  argument
399 		dev_err(&PIIX4_dev->dev, "SMBus does not support "  in piix4_setup_sb800()
405 	if ((PIIX4_dev->vendor == PCI_VENDOR_ID_AMD &&  in piix4_setup_sb800()
406 	     PIIX4_dev->device == PCI_DEVICE_ID_AMD_HUDSON2_SMBUS &&  in piix4_setup_sb800()
407 	     PIIX4_dev->revision >= 0x41) ||  in piix4_setup_sb800()
408 	    (PIIX4_dev->vendor == PCI_VENDOR_ID_AMD &&  in piix4_setup_sb800()
409 	     PIIX4_dev->device == PCI_DEVICE_ID_AMD_KERNCZ_SMBUS &&  in piix4_setup_sb800()
410 	     PIIX4_dev->revision >= 0x49) ||  in piix4_setup_sb800()
411 	    (PIIX4_dev->vendor == PCI_VENDOR_ID_HYGON &&  in piix4_setup_sb800()
412 	     PIIX4_dev->device == PCI_DEVICE_ID_AMD_KERNCZ_SMBUS))  in piix4_setup_sb800()
417 	retval = piix4_setup_sb800_smba(PIIX4_dev, smb_en, aux, &smb_en_status,  in piix4_setup_sb800()
427 		dev_err(&PIIX4_dev->dev, "SMBus region 0x%x already in use!\n",  in piix4_setup_sb800()
434 		dev_info(&PIIX4_dev->dev,  in piix4_setup_sb800()
442 		dev_err(&PIIX4_dev->dev, "SMBus I2C bus config region "  in piix4_setup_sb800()
451 		dev_dbg(&PIIX4_dev->dev, "Using IRQ for SMBus\n");  in piix4_setup_sb800()
453 		dev_dbg(&PIIX4_dev->dev, "Using SMI# for SMBus\n");  in piix4_setup_sb800()
455 	dev_info(&PIIX4_dev->dev,  in piix4_setup_sb800()
460 	if (PIIX4_dev->vendor == PCI_VENDOR_ID_AMD ||  in piix4_setup_sb800()
461 	    PIIX4_dev->vendor == PCI_VENDOR_ID_HYGON) {  in piix4_setup_sb800()
462 		if (PIIX4_dev->device == PCI_DEVICE_ID_AMD_KERNCZ_SMBUS ||  in piix4_setup_sb800()
463 		    (PIIX4_dev->device == PCI_DEVICE_ID_AMD_HUDSON2_SMBUS &&  in piix4_setup_sb800()
464 		     PIIX4_dev->revision >= 0x1F)) {  in piix4_setup_sb800()
474 		mmio_cfg.use_mmio = piix4_sb800_use_mmio(PIIX4_dev);  in piix4_setup_sb800()
475 		retval = piix4_sb800_region_request(&PIIX4_dev->dev, &mmio_cfg);  in piix4_setup_sb800()
488 		piix4_sb800_region_release(&PIIX4_dev->dev, &mmio_cfg);  in piix4_setup_sb800()
491 	dev_info(&PIIX4_dev->dev,  in piix4_setup_sb800()
498 static int piix4_setup_aux(struct pci_dev *PIIX4_dev,  in piix4_setup_aux()  argument
508 	pci_read_config_word(PIIX4_dev, base_reg_addr, &piix4_smba);  in piix4_setup_aux()
510 		dev_dbg(&PIIX4_dev->dev,  in piix4_setup_aux()
517 		dev_dbg(&PIIX4_dev->dev,  in piix4_setup_aux()
526 		dev_err(&PIIX4_dev->dev, "Auxiliary SMBus region 0x%x "  in piix4_setup_aux()
531 	dev_info(&PIIX4_dev->dev,  in piix4_setup_aux()