This patch adds support for port names for the SB800 chipset.
Since the chipset supports a multiplexed main SMBus controller, adding
the channel name to the adapter name is necessary to differentiate the
ports better (for example in sensors output).
Signed-off-by: Christian Fetzer <fetzer.ch@xxxxxxxxx>
---
drivers/i2c/busses/i2c-piix4.c | 14 ++++++++++----
1 file changed, 10 insertions(+), 4 deletions(-)
diff --git a/drivers/i2c/busses/i2c-piix4.c b/drivers/i2c/busses/i2c-piix4.c
index 54f8af5..18ea5d7 100644
--- a/drivers/i2c/busses/i2c-piix4.c
+++ b/drivers/i2c/busses/i2c-piix4.c
@@ -132,6 +132,10 @@ static const struct dmi_system_id piix4_dmi_ibm[] = {
/* SB800 globals */
DEFINE_MUTEX(piix4_mutex_sb800);
static unsigned short piix4_smb_idx_sb800;
+static const char *piix4_main_port_names_sb800[4] = {
+ "SDA0", "SDA2", "SDA3", "SDA4"
+};
+static const char *piix4_aux_port_name_sb800 = "SDA1";
struct i2c_piix4_adapdata {
unsigned short smba;
@@ -613,7 +617,7 @@ static struct i2c_adapter *piix4_main_adapters[PIIX4_MAX_ADAPTERS];
static struct i2c_adapter *piix4_aux_adapter;
static int piix4_add_adapter(struct pci_dev *dev, unsigned short smba,
- struct i2c_adapter **padap)
+ const char *name, struct i2c_adapter **padap)
{
struct i2c_adapter *adap;
struct i2c_piix4_adapdata *adapdata;
@@ -642,7 +646,7 @@ static int piix4_add_adapter(struct pci_dev *dev, unsigned short smba,
adap->dev.parent = &dev->dev;
snprintf(adap->name, sizeof(adap->name),
- "SMBus PIIX4 adapter at %04x", smba);
+ "SMBus PIIX4 adapter %s at %04x", name, smba);
i2c_set_adapdata(adap, adapdata);
@@ -667,6 +671,7 @@ static int piix4_add_adapters_sb800(struct pci_dev *dev, unsigned short smba)
for (port = 0; port < PIIX4_MAX_ADAPTERS; port++) {
retval = piix4_add_adapter(dev, smba,
+ piix4_main_port_names_sb800[port],
&piix4_main_adapters[port]);
if (retval < 0)
goto error;
@@ -726,7 +731,7 @@ static int piix4_probe(struct pci_dev *dev, const struct pci_device_id *id)
return retval;
/* Try to register main SMBus adapter, give up if we can't */
- retval = piix4_add_adapter(dev, retval,
+ retval = piix4_add_adapter(dev, retval, "",
&piix4_main_adapters[0]);
}
@@ -755,7 +760,8 @@ static int piix4_probe(struct pci_dev *dev, const struct pci_device_id *id)
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);
+ piix4_add_adapter(dev, retval, piix4_aux_port_name_sb800,
+ &piix4_aux_adapter);
}
return 0;
--
1.9.1
--
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