hwmon: (adt7475) Handle alternative pin functions

[safe/jmp/linux-2.6] / drivers / hwmon / i5k_amb.c

diff --git a/drivers/hwmon/i5k_amb.c b/drivers/hwmon/i5k_amb.c
index 6ac5c6f..27d7f72 100644 (file)
--- a/drivers/hwmon/i5k_amb.c
+++ b/drivers/hwmon/i5k_amb.c
@@ -81,6 +81,8 @@ static unsigned long amb_reg_temp(unsigned int amb)
 #define MAX_AMBS_PER_CHANNEL           16
 #define MAX_AMBS                       (MAX_MEM_CHANNELS * \
                                         MAX_AMBS_PER_CHANNEL)
+#define CHANNEL_SHIFT                  4
+#define DIMM_MASK                      0xF
 /*
  * Ugly hack: For some reason the highest bit is set if there
  * are _any_ DIMMs in the channel.  Attempting to read from
@@ -89,7 +91,7 @@ static unsigned long amb_reg_temp(unsigned int amb)
  * might prevent us from seeing the 16th DIMM in the channel.
  */
 #define REAL_MAX_AMBS_PER_CHANNEL      15
-#define KNOBS_PER_AMB                  5
+#define KNOBS_PER_AMB                  6
 
 static unsigned long amb_num_from_reg(unsigned int byte_num, unsigned int bit)
 {
@@ -111,6 +113,7 @@ struct i5k_amb_data {
        void __iomem *amb_mmio;
        struct i5k_device_attribute *attrs;
        unsigned int num_attrs;
+       unsigned long chipset_id;
 };
 
 static ssize_t show_name(struct device *dev, struct device_attribute *devattr,
@@ -237,6 +240,16 @@ static ssize_t show_amb_temp(struct device *dev,
                500 * amb_read_byte(data, amb_reg_temp(attr->index)));
 }
 
+static ssize_t show_label(struct device *dev,
+                         struct device_attribute *devattr,
+                         char *buf)
+{
+       struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
+
+       return sprintf(buf, "Ch. %d DIMM %d\n", attr->index >> CHANNEL_SHIFT,
+                      attr->index & DIMM_MASK);
+}
+
 static int __devinit i5k_amb_hwmon_init(struct platform_device *pdev)
 {
        int i, j, k, d = 0;
@@ -267,6 +280,20 @@ static int __devinit i5k_amb_hwmon_init(struct platform_device *pdev)
                                continue;
                        d++;
 
+                       /* sysfs label */
+                       iattr = data->attrs + data->num_attrs;
+                       snprintf(iattr->name, AMB_SYSFS_NAME_LEN,
+                                "temp%d_label", d);
+                       iattr->s_attr.dev_attr.attr.name = iattr->name;
+                       iattr->s_attr.dev_attr.attr.mode = S_IRUGO;
+                       iattr->s_attr.dev_attr.show = show_label;
+                       iattr->s_attr.index = k;
+                       res = device_create_file(&pdev->dev,
+                                                &iattr->s_attr.dev_attr);
+                       if (res)
+                               goto exit_remove;
+                       data->num_attrs++;
+
                        /* Temperature sysfs knob */
                        iattr = data->attrs + data->num_attrs;
                        snprintf(iattr->name, AMB_SYSFS_NAME_LEN,
@@ -382,7 +409,8 @@ err:
        return res;
 }
 
-static int __devinit i5k_find_amb_registers(struct i5k_amb_data *data)
+static int __devinit i5k_find_amb_registers(struct i5k_amb_data *data,
+                                           unsigned long devid)
 {
        struct pci_dev *pcidev;
        u32 val32;
@@ -390,7 +418,7 @@ static int __devinit i5k_find_amb_registers(struct i5k_amb_data *data)
 
        /* Find AMB register memory space */
        pcidev = pci_get_device(PCI_VENDOR_ID_INTEL,
-                               PCI_DEVICE_ID_INTEL_5000_ERR,
+                               devid,
                                NULL);
        if (!pcidev)
                return -ENODEV;
@@ -409,6 +437,8 @@ static int __devinit i5k_find_amb_registers(struct i5k_amb_data *data)
                goto out;
        }
 
+       data->chipset_id = devid;
+
        res = 0;
 out:
        pci_dev_put(pcidev);
@@ -441,10 +471,37 @@ out:
        return res;
 }
 
+static unsigned long i5k_channel_pci_id(struct i5k_amb_data *data,
+                                       unsigned long channel)
+{
+       switch (data->chipset_id) {
+       case PCI_DEVICE_ID_INTEL_5000_ERR:
+               return PCI_DEVICE_ID_INTEL_5000_FBD0 + channel;
+       case PCI_DEVICE_ID_INTEL_5400_ERR:
+               return PCI_DEVICE_ID_INTEL_5400_FBD0 + channel;
+       default:
+               BUG();
+       }
+}
+
+static unsigned long chipset_ids[] = {
+       PCI_DEVICE_ID_INTEL_5000_ERR,
+       PCI_DEVICE_ID_INTEL_5400_ERR,
+       0
+};
+
+static struct pci_device_id i5k_amb_ids[] __devinitdata = {
+       { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_5000_ERR) },
+       { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_5400_ERR) },
+       { 0, }
+};
+MODULE_DEVICE_TABLE(pci, i5k_amb_ids);
+
 static int __devinit i5k_amb_probe(struct platform_device *pdev)
 {
        struct i5k_amb_data *data;
        struct resource *reso;
+       int i;
        int res = -ENODEV;
 
        data = kzalloc(sizeof(*data), GFP_KERNEL);
@@ -452,19 +509,24 @@ static int __devinit i5k_amb_probe(struct platform_device *pdev)
                return -ENOMEM;
 
        /* Figure out where the AMB registers live */
-       res = i5k_find_amb_registers(data);
+       i = 0;
+       do {
+               res = i5k_find_amb_registers(data, chipset_ids[i]);
+               i++;
+       } while (res && chipset_ids[i]);
+
        if (res)
                goto err;
 
        /* Copy the DIMM presence map for the first two channels */
        res = i5k_channel_probe(&data->amb_present[0],
-                               PCI_DEVICE_ID_INTEL_5000_FBD0);
+                               i5k_channel_pci_id(data, 0));
        if (res)
                goto err;
 
        /* Copy the DIMM presence map for the optional second two channels */
        i5k_channel_probe(&data->amb_present[2],
-                         PCI_DEVICE_ID_INTEL_5000_FBD1);
+                         i5k_channel_pci_id(data, 1));
 
        /* Set up resource regions */
        reso = request_mem_region(data->amb_base, data->amb_len, DRVNAME);