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i2c-i801: Don't probe for slaves on IDF channels 

I don't know if Fujitsu is ever going to produce Patsburg-based
machines, but if they do, I'd rather not probe the secondary (IDF)
SMBus channels. At least not until we have a good reason for doing so.

On a side note, I'm not even sure if it is right to enable detection
of HWMON and DDC devices on the IDF channels. Time will tell...

Signed-off-by: Jean Delvare <khali@linux-fr.org>
Acked-by: Hans de Goede <hdegoede@redhat.com>
Acked-by: David Woodhouse <David.Woodhouse@intel.com>
hifive-unleashed-5.1
Jean Delvare 2011-05-24 20:58:49 +02:00 committed by Jean Delvare
parent 6e2a851e71
commit e7198fbf50
1 changed files with 31 additions and 15 deletions
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46
drivers/i2c/busses/i2c-i801.c
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@ -160,6 +160,8 @@ static struct pci_driver i801_driver;
#define FEATURE_BLOCK_BUFFER (1 << 1)
#define FEATURE_BLOCK_PROC (1 << 2)
#define FEATURE_I2C_BLOCK_READ (1 << 3)
/* Not really a feature, but it's convenient to handle it as such */
#define FEATURE_IDF (1 << 15)
static const char *i801_feature_names[] = {
"SMBus PEC",
@ -738,6 +740,29 @@ static void __devinit dmi_check_onboard_devices(const struct dmi_header *dm,
}
#endif
/* Register optional slaves */
static void __devinit i801_probe_optional_slaves(struct i801_priv *priv)
{
/* Only register slaves on main SMBus channel */
if (priv->features & FEATURE_IDF)
return;
#if defined CONFIG_INPUT_APANEL || defined CONFIG_INPUT_APANEL_MODULE
if (apanel_addr) {
struct i2c_board_info info;
memset(&info, 0, sizeof(struct i2c_board_info));
info.addr = apanel_addr;
strlcpy(info.type, "fujitsu_apanel", I2C_NAME_SIZE);
i2c_new_device(&priv->adapter, &info);
}
#endif
#if defined CONFIG_SENSORS_FSCHMD || defined CONFIG_SENSORS_FSCHMD_MODULE
if (dmi_name_in_vendors("FUJITSU"))
dmi_walk(dmi_check_onboard_devices, &priv->adapter);
#endif
}
static int __devinit i801_probe(struct pci_dev *dev,
const struct pci_device_id *id)
{
@ -756,6 +781,11 @@ static int __devinit i801_probe(struct pci_dev *dev,
priv->pci_dev = dev;
switch (dev->device) {
case PCI_DEVICE_ID_INTEL_PATSBURG_SMBUS_IDF0:
case PCI_DEVICE_ID_INTEL_PATSBURG_SMBUS_IDF1:
case PCI_DEVICE_ID_INTEL_PATSBURG_SMBUS_IDF2:
priv->features |= FEATURE_IDF;
/* fall through */
default:
priv->features |= FEATURE_I2C_BLOCK_READ;
/* fall through */
@ -841,21 +871,7 @@ static int __devinit i801_probe(struct pci_dev *dev,
goto exit_release;
}
/* Register optional slaves */
#if defined CONFIG_INPUT_APANEL || defined CONFIG_INPUT_APANEL_MODULE
if (apanel_addr) {
struct i2c_board_info info;
memset(&info, 0, sizeof(struct i2c_board_info));
info.addr = apanel_addr;
strlcpy(info.type, "fujitsu_apanel", I2C_NAME_SIZE);
i2c_new_device(&priv->adapter, &info);
}
#endif
#if defined CONFIG_SENSORS_FSCHMD || defined CONFIG_SENSORS_FSCHMD_MODULE
if (dmi_name_in_vendors("FUJITSU"))
dmi_walk(dmi_check_onboard_devices, &priv->adapter);
#endif
i801_probe_optional_slaves(priv);
pci_set_drvdata(dev, priv);
return 0;