diff options
| author | Christian Fetzer <fetzer.ch@gmail.com> | 2015-11-19 20:13:49 +0100 |
|---|---|---|
| committer | Wolfram Sang <wsa@the-dreams.de> | 2015-11-30 14:36:30 +0100 |
| commit | 725d2e3facfb51f8925da3cadce5380b5ea85d09 (patch) | |
| tree | 0f5f65c47c0dff6615a8294359126404af4ed539 /drivers/i2c/busses/i2c-piix4.c | |
| parent | i2c: piix4: Add support for multiplexed main adapter in SB800 (diff) | |
| download | linux-725d2e3facfb51f8925da3cadce5380b5ea85d09.tar.xz linux-725d2e3facfb51f8925da3cadce5380b5ea85d09.zip | |
i2c: piix4: Add adapter port name support for SB800 chipset
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@gmail.com>
Reviewed-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
Diffstat (limited to 'drivers/i2c/busses/i2c-piix4.c')
| -rw-r--r-- | drivers/i2c/busses/i2c-piix4.c | 16 |
1 files changed, 12 insertions, 4 deletions
diff --git a/drivers/i2c/busses/i2c-piix4.c b/drivers/i2c/busses/i2c-piix4.c index 6b4231d406d5..af4e606f8886 100644 --- a/drivers/i2c/busses/i2c-piix4.c +++ b/drivers/i2c/busses/i2c-piix4.c @@ -136,6 +136,12 @@ static const struct dmi_system_id piix4_dmi_ibm[] = { { }, }; +/* SB800 globals */ +static const char *piix4_main_port_names_sb800[PIIX4_MAX_ADAPTERS] = { + "SDA0", "SDA2", "SDA3", "SDA4" +}; +static const char *piix4_aux_port_name_sb800 = "SDA1"; + struct i2c_piix4_adapdata { unsigned short smba; @@ -619,7 +625,7 @@ 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; @@ -648,7 +654,7 @@ 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); @@ -680,6 +686,7 @@ 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; @@ -749,7 +756,7 @@ 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, "main", &piix4_main_adapters[0]); if (retval < 0) return retval; @@ -776,7 +783,8 @@ 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; |