diff options
author | Gustavo Padovan <gustavo.padovan@collabora.co.uk> | 2013-09-27 11:56:14 -0300 |
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committer | Gustavo Padovan <gustavo.padovan@collabora.co.uk> | 2013-09-27 11:56:14 -0300 |
commit | 1025c04cecd19882e28f16c4004034b475c372c5 (patch) | |
tree | 2b7402887e86d54bff5a123228c9059eae5e32bd /drivers/i2c/busses/i2c-piix4.c | |
parent | 4375f1037d52602413142e290608d0d84671ad36 (diff) | |
parent | 5bcecf325378218a8e248bb6bcae96ec7362f8ef (diff) |
Merge git://git.kernel.org/pub/scm/linux/kernel/git/bluetooth/bluetooth
Conflicts:
net/bluetooth/hci_core.c
Diffstat (limited to 'drivers/i2c/busses/i2c-piix4.c')
-rw-r--r-- | drivers/i2c/busses/i2c-piix4.c | 41 |
1 files changed, 31 insertions, 10 deletions
diff --git a/drivers/i2c/busses/i2c-piix4.c b/drivers/i2c/busses/i2c-piix4.c index d05ad590af2..a028617b8f1 100644 --- a/drivers/i2c/busses/i2c-piix4.c +++ b/drivers/i2c/busses/i2c-piix4.c @@ -231,11 +231,11 @@ static int piix4_setup(struct pci_dev *PIIX4_dev, } static int piix4_setup_sb800(struct pci_dev *PIIX4_dev, - const struct pci_device_id *id) + const struct pci_device_id *id, u8 aux) { unsigned short piix4_smba; unsigned short smba_idx = 0xcd6; - u8 smba_en_lo, smba_en_hi, i2ccfg, i2ccfg_offset = 0x10, smb_en = 0x2c; + u8 smba_en_lo, smba_en_hi, i2ccfg, i2ccfg_offset = 0x10, smb_en; /* SB800 and later SMBus does not support forcing address */ if (force || force_addr) { @@ -245,6 +245,8 @@ static int piix4_setup_sb800(struct pci_dev *PIIX4_dev, } /* Determine the address of the SMBus areas */ + smb_en = (aux) ? 0x28 : 0x2c; + if (!request_region(smba_idx, 2, "smba_idx")) { dev_err(&PIIX4_dev->dev, "SMBus base address index region " "0x%x already in use!\n", smba_idx); @@ -272,6 +274,13 @@ static int piix4_setup_sb800(struct pci_dev *PIIX4_dev, return -EBUSY; } + /* Aux SMBus does not support IRQ information */ + if (aux) { + dev_info(&PIIX4_dev->dev, + "SMBus Host Controller at 0x%x\n", piix4_smba); + return piix4_smba; + } + /* Request the SMBus I2C bus config region */ if (!request_region(piix4_smba + i2ccfg_offset, 1, "i2ccfg")) { dev_err(&PIIX4_dev->dev, "SMBus I2C bus config region " @@ -597,7 +606,7 @@ static int piix4_probe(struct pci_dev *dev, const struct pci_device_id *id) dev->revision >= 0x40) || dev->vendor == PCI_VENDOR_ID_AMD) /* base address location etc changed in SB800 */ - retval = piix4_setup_sb800(dev, id); + retval = piix4_setup_sb800(dev, id, 0); else retval = piix4_setup(dev, id); @@ -611,17 +620,29 @@ static int piix4_probe(struct pci_dev *dev, const struct pci_device_id *id) return retval; /* Check for auxiliary SMBus on some AMD chipsets */ + retval = -ENODEV; + if (dev->vendor == PCI_VENDOR_ID_ATI && - dev->device == PCI_DEVICE_ID_ATI_SBX00_SMBUS && - dev->revision < 0x40) { - retval = piix4_setup_aux(dev, id, 0x58); - if (retval > 0) { - /* Try to add the aux adapter if it exists, - * piix4_add_adapter will clean up if this fails */ - piix4_add_adapter(dev, retval, &piix4_aux_adapter); + dev->device == PCI_DEVICE_ID_ATI_SBX00_SMBUS) { + if (dev->revision < 0x40) { + retval = piix4_setup_aux(dev, id, 0x58); + } else { + /* SB800 added aux bus too */ + retval = piix4_setup_sb800(dev, id, 1); } } + if (dev->vendor == PCI_VENDOR_ID_AMD && + dev->device == PCI_DEVICE_ID_AMD_HUDSON2_SMBUS) { + retval = piix4_setup_sb800(dev, id, 1); + } + + if (retval > 0) { + /* Try to add the aux adapter if it exists, + * piix4_add_adapter will clean up if this fails */ + piix4_add_adapter(dev, retval, &piix4_aux_adapter); + } + return 0; } |