hwmon: (lm85) extend to support EMC6D103 chips

The interface is identical EMC6D102, so all that needs to be added are
some definitions and their uses.

Registers apparently missing in EMC6D103S/EMC6D103:A2 compared to EMC6D103:A0,
EMC6D103:A1, and EMC6D102 (according to the data sheets), but used
unconditionally in the driver: 62[5:7], 6D[0:7], and 6E[0:7]. For that
reason, EMC6D103S chips don't get enabled for the time being.

Signed-off-by: Jan Beulich <jbeulich@novell.com>
(Guenter Roeck: Replaced EMC6D103_A2 with EMC6D103S per EMC6D103S datasheet)
Signed-off-by: Guenter Roeck <guenter.roeck@ericsson.com>
Cc: stable@kernel.org

diff --git a/drivers/hwmon/Kconfig b/drivers/hwmon/Kconfig
index 5eadb00..297bc9a 100644 (file)
--- a/drivers/hwmon/Kconfig
+++ b/drivers/hwmon/Kconfig
@@ -575,7 +575,7 @@ config SENSORS_LM85
        help
          If you say yes here you get support for National Semiconductor LM85
          sensor chips and clones: ADM1027, ADT7463, ADT7468, EMC6D100,
-         EMC6D101 and EMC6D102.
+         EMC6D101, EMC6D102, and EMC6D103.
 
          This driver can also be built as a module.  If so, the module
          will be called lm85.

diff --git a/drivers/hwmon/lm85.c b/drivers/hwmon/lm85.c
index 1e22984..d2cc286 100644 (file)
--- a/drivers/hwmon/lm85.c
+++ b/drivers/hwmon/lm85.c
@@ -41,7 +41,7 @@ static const unsigned short normal_i2c[] = { 0x2c, 0x2d, 0x2e, I2C_CLIENT_END };
 enum chips {
        any_chip, lm85b, lm85c,
        adm1027, adt7463, adt7468,
-       emc6d100, emc6d102
+       emc6d100, emc6d102, emc6d103
 };
 
 /* The LM85 registers */
@@ -90,6 +90,9 @@ enum chips {
 #define        LM85_VERSTEP_EMC6D100_A0        0x60
 #define        LM85_VERSTEP_EMC6D100_A1        0x61
 #define        LM85_VERSTEP_EMC6D102           0x65
+#define        LM85_VERSTEP_EMC6D103_A0        0x68
+#define        LM85_VERSTEP_EMC6D103_A1        0x69
+#define        LM85_VERSTEP_EMC6D103S          0x6A    /* Also known as EMC6D103:A2 */
 
 #define        LM85_REG_CONFIG                 0x40
 
@@ -348,6 +351,7 @@ static const struct i2c_device_id lm85_id[] = {
        { "emc6d100", emc6d100 },
        { "emc6d101", emc6d100 },
        { "emc6d102", emc6d102 },
+       { "emc6d103", emc6d103 },
        { }
 };
 MODULE_DEVICE_TABLE(i2c, lm85_id);
@@ -1250,6 +1254,20 @@ static int lm85_detect(struct i2c_client *client, struct i2c_board_info *info)
                case LM85_VERSTEP_EMC6D102:
                        type_name = "emc6d102";
                        break;
+               case LM85_VERSTEP_EMC6D103_A0:
+               case LM85_VERSTEP_EMC6D103_A1:
+                       type_name = "emc6d103";
+                       break;
+               /*
+                * Registers apparently missing in EMC6D103S/EMC6D103:A2
+                * compared to EMC6D103:A0, EMC6D103:A1, and EMC6D102
+                * (according to the data sheets), but used unconditionally
+                * in the driver: 62[5:7], 6D[0:7], and 6E[0:7].
+                * So skip EMC6D103S for now.
+               case LM85_VERSTEP_EMC6D103S:
+                       type_name = "emc6d103s";
+                       break;
+                */
                }
        } else {
                dev_dbg(&adapter->dev,
@@ -1283,6 +1301,7 @@ static int lm85_probe(struct i2c_client *client,
        case adt7468:
        case emc6d100:
        case emc6d102:
+       case emc6d103:
                data->freq_map = adm1027_freq_map;
                break;
        default:
@@ -1468,7 +1487,7 @@ static struct lm85_data *lm85_update_device(struct device *dev)
                        /* More alarm bits */
                        data->alarms |= lm85_read_value(client,
                                                EMC6D100_REG_ALARM3) << 16;
-               } else if (data->type == emc6d102) {
+               } else if (data->type == emc6d102 || data->type == emc6d103) {
                        /* Have to read LSB bits after the MSB ones because
                           the reading of the MSB bits has frozen the
                           LSBs (backward from the ADM1027).