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Diffstat (limited to 'drivers/hwmon/lm90.c')
-rw-r--r--drivers/hwmon/lm90.c65
1 files changed, 44 insertions, 21 deletions
diff --git a/drivers/hwmon/lm90.c b/drivers/hwmon/lm90.c
index 2f94f9504804..90ddb8774210 100644
--- a/drivers/hwmon/lm90.c
+++ b/drivers/hwmon/lm90.c
@@ -54,6 +54,9 @@
* and extended mode. They are mostly compatible with LM90 except for a data
* format difference for the temperature value registers.
*
+ * This driver also supports the SA56004 from Philips. This device is
+ * pin-compatible with the LM86, the ED/EDP parts are also address-compatible.
+ *
* Since the LM90 was the first chipset supported by this driver, most
* comments will refer to this chipset, but are actually general and
* concern all supported chipsets, unless mentioned otherwise.
@@ -96,13 +99,15 @@
* MAX6659 can have address 0x4c, 0x4d or 0x4e.
* MAX6680 and MAX6681 can have address 0x18, 0x19, 0x1a, 0x29, 0x2a, 0x2b,
* 0x4c, 0x4d or 0x4e.
+ * SA56004 can have address 0x48 through 0x4F.
*/
static const unsigned short normal_i2c[] = {
- 0x18, 0x19, 0x1a, 0x29, 0x2a, 0x2b, 0x4c, 0x4d, 0x4e, I2C_CLIENT_END };
+ 0x18, 0x19, 0x1a, 0x29, 0x2a, 0x2b, 0x48, 0x49, 0x4a, 0x4b, 0x4c,
+ 0x4d, 0x4e, 0x4f, I2C_CLIENT_END };
enum chips { lm90, adm1032, lm99, lm86, max6657, max6659, adt7461, max6680,
- max6646, w83l771, max6696 };
+ max6646, w83l771, max6696, sa56004 };
/*
* The LM90 registers
@@ -152,6 +157,10 @@ enum chips { lm90, adm1032, lm99, lm86, max6657, max6659, adt7461, max6680,
#define MAX6659_REG_R_LOCAL_EMERG 0x17
#define MAX6659_REG_W_LOCAL_EMERG 0x17
+/* SA56004 registers */
+
+#define SA56004_REG_R_LOCAL_TEMPL 0x22
+
#define LM90_DEF_CONVRATE_RVAL 6 /* Def conversion rate register value */
#define LM90_MAX_CONVRATE_MS 16000 /* Maximum conversion rate in ms */
@@ -161,7 +170,6 @@ enum chips { lm90, adm1032, lm99, lm86, max6657, max6659, adt7461, max6680,
#define LM90_FLAG_ADT7461_EXT (1 << 0) /* ADT7461 extended mode */
/* Device features */
#define LM90_HAVE_OFFSET (1 << 1) /* temperature offset register */
-#define LM90_HAVE_LOCAL_EXT (1 << 2) /* extended local temperature */
#define LM90_HAVE_REM_LIMIT_EXT (1 << 3) /* extended remote limit */
#define LM90_HAVE_EMERGENCY (1 << 4) /* 3rd upper (emergency) limit */
#define LM90_HAVE_EMERGENCY_ALARM (1 << 5)/* emergency alarm */
@@ -192,6 +200,7 @@ static const struct i2c_device_id lm90_id[] = {
{ "max6696", max6696 },
{ "nct1008", adt7461 },
{ "w83l771", w83l771 },
+ { "sa56004", sa56004 },
{ }
};
MODULE_DEVICE_TABLE(i2c, lm90_id);
@@ -204,6 +213,7 @@ struct lm90_params {
u16 alert_alarms; /* Which alarm bits trigger ALERT# */
/* Upper 8 bits for max6695/96 */
u8 max_convrate; /* Maximum conversion rate register value */
+ u8 reg_local_ext; /* Extended local temp register (optional) */
};
static const struct lm90_params lm90_params[] = {
@@ -235,19 +245,20 @@ static const struct lm90_params lm90_params[] = {
.max_convrate = 9,
},
[max6646] = {
- .flags = LM90_HAVE_LOCAL_EXT,
.alert_alarms = 0x7c,
.max_convrate = 6,
+ .reg_local_ext = MAX6657_REG_R_LOCAL_TEMPL,
},
[max6657] = {
- .flags = LM90_HAVE_LOCAL_EXT,
.alert_alarms = 0x7c,
.max_convrate = 8,
+ .reg_local_ext = MAX6657_REG_R_LOCAL_TEMPL,
},
[max6659] = {
- .flags = LM90_HAVE_LOCAL_EXT | LM90_HAVE_EMERGENCY,
+ .flags = LM90_HAVE_EMERGENCY,
.alert_alarms = 0x7c,
.max_convrate = 8,
+ .reg_local_ext = MAX6657_REG_R_LOCAL_TEMPL,
},
[max6680] = {
.flags = LM90_HAVE_OFFSET,
@@ -255,16 +266,23 @@ static const struct lm90_params lm90_params[] = {
.max_convrate = 7,
},
[max6696] = {
- .flags = LM90_HAVE_LOCAL_EXT | LM90_HAVE_EMERGENCY
+ .flags = LM90_HAVE_EMERGENCY
| LM90_HAVE_EMERGENCY_ALARM | LM90_HAVE_TEMP3,
.alert_alarms = 0x187c,
.max_convrate = 6,
+ .reg_local_ext = MAX6657_REG_R_LOCAL_TEMPL,
},
[w83l771] = {
.flags = LM90_HAVE_OFFSET | LM90_HAVE_REM_LIMIT_EXT,
.alert_alarms = 0x7c,
.max_convrate = 8,
},
+ [sa56004] = {
+ .flags = LM90_HAVE_OFFSET | LM90_HAVE_REM_LIMIT_EXT,
+ .alert_alarms = 0x7b,
+ .max_convrate = 9,
+ .reg_local_ext = SA56004_REG_R_LOCAL_TEMPL,
+ },
};
/*
@@ -286,6 +304,7 @@ struct lm90_data {
u16 alert_alarms; /* Which alarm bits trigger ALERT# */
/* Upper 8 bits for max6695/96 */
u8 max_convrate; /* Maximum conversion rate */
+ u8 reg_local_ext; /* local extension register offset */
/* registers values */
s8 temp8[8]; /* 0: local low limit
@@ -452,9 +471,9 @@ static struct lm90_data *lm90_update_device(struct device *dev)
lm90_read_reg(client, LM90_REG_R_REMOTE_CRIT, &data->temp8[3]);
lm90_read_reg(client, LM90_REG_R_TCRIT_HYST, &data->temp_hyst);
- if (data->flags & LM90_HAVE_LOCAL_EXT) {
+ if (data->reg_local_ext) {
lm90_read16(client, LM90_REG_R_LOCAL_TEMP,
- MAX6657_REG_R_LOCAL_TEMPL,
+ data->reg_local_ext,
&data->temp11[4]);
} else {
if (lm90_read_reg(client, LM90_REG_R_LOCAL_TEMP,
@@ -1092,7 +1111,7 @@ static int lm90_detect(struct i2c_client *new_client,
struct i2c_adapter *adapter = new_client->adapter;
int address = new_client->addr;
const char *name = NULL;
- int man_id, chip_id, reg_config1, reg_convrate;
+ int man_id, chip_id, reg_config1, reg_config2, reg_convrate;
if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA))
return -ENODEV;
@@ -1108,15 +1127,16 @@ static int lm90_detect(struct i2c_client *new_client,
LM90_REG_R_CONVRATE)) < 0)
return -ENODEV;
- if ((address == 0x4C || address == 0x4D)
- && man_id == 0x01) { /* National Semiconductor */
- int reg_config2;
-
+ if (man_id == 0x01 || man_id == 0x5C || man_id == 0x41) {
reg_config2 = i2c_smbus_read_byte_data(new_client,
LM90_REG_R_CONFIG2);
if (reg_config2 < 0)
return -ENODEV;
+ } else
+ reg_config2 = 0; /* Make compiler happy */
+ if ((address == 0x4C || address == 0x4D)
+ && man_id == 0x01) { /* National Semiconductor */
if ((reg_config1 & 0x2A) == 0x00
&& (reg_config2 & 0xF8) == 0x00
&& reg_convrate <= 0x09) {
@@ -1245,13 +1265,6 @@ static int lm90_detect(struct i2c_client *new_client,
} else
if (address == 0x4C
&& man_id == 0x5C) { /* Winbond/Nuvoton */
- int reg_config2;
-
- reg_config2 = i2c_smbus_read_byte_data(new_client,
- LM90_REG_R_CONFIG2);
- if (reg_config2 < 0)
- return -ENODEV;
-
if ((reg_config1 & 0x2A) == 0x00
&& (reg_config2 & 0xF8) == 0x00) {
if (chip_id == 0x01 /* W83L771W/G */
@@ -1263,6 +1276,15 @@ static int lm90_detect(struct i2c_client *new_client,
name = "w83l771";
}
}
+ } else
+ if (address >= 0x48 && address <= 0x4F
+ && man_id == 0xA1) { /* NXP Semiconductor/Philips */
+ if (chip_id == 0x00
+ && (reg_config1 & 0x2A) == 0x00
+ && (reg_config2 & 0xFE) == 0x00
+ && reg_convrate <= 0x09) {
+ name = "sa56004";
+ }
}
if (!name) { /* identification failed */
@@ -1368,6 +1390,7 @@ static int lm90_probe(struct i2c_client *new_client,
/* Set chip capabilities */
data->flags = lm90_params[data->kind].flags;
+ data->reg_local_ext = lm90_params[data->kind].reg_local_ext;
/* Set maximum conversion rate */
data->max_convrate = lm90_params[data->kind].max_convrate;
generated by cgit v1.2.3 (git 2.25.1) at 2024-07-19 12:34:28 +0000