hwmon: (lm90) Add support for Philips SA56004
Add support for Philips SA56004, an LM86 compatible temperature sensor.
Signed-off-by: Stijn Devriendt <sdevrien@cisco.com>
Signed-off-by: Guenter Roeck <guenter.roeck@ericsson.com>
diff --git a/drivers/hwmon/lm90.c b/drivers/hwmon/lm90.c
index 2f94f95..708bf0e 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 @@
#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 */
@@ -192,6 +201,7 @@
{ "max6696", max6696 },
{ "nct1008", adt7461 },
{ "w83l771", w83l771 },
+ { "sa56004", sa56004 },
{ }
};
MODULE_DEVICE_TABLE(i2c, lm90_id);
@@ -204,6 +214,8 @@
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; /* Local extension register if
+ LM90_HAVE_LOCAL_EXT is set*/
};
static const struct lm90_params lm90_params[] = {
@@ -238,16 +250,19 @@
.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,
.alert_alarms = 0x7c,
.max_convrate = 8,
+ .reg_local_ext = MAX6657_REG_R_LOCAL_TEMPL,
},
[max6680] = {
.flags = LM90_HAVE_OFFSET,
@@ -259,12 +274,20 @@
| 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
+ | LM90_HAVE_LOCAL_EXT,
+ .alert_alarms = 0x7b,
+ .max_convrate = 9,
+ .reg_local_ext = SA56004_REG_R_LOCAL_TEMPL,
+ },
};
/*
@@ -286,6 +309,7 @@
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
@@ -454,7 +478,7 @@
if (data->flags & LM90_HAVE_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,
@@ -1263,6 +1287,11 @@
name = "w83l771";
}
}
+ } else
+ if (man_id == 0xA1) { /* NXP Semiconductor/Philips */
+ if (chip_id == 0x00 && address >= 0x48 && address <= 0x4F) {
+ name = "sa56004";
+ }
}
if (!name) { /* identification failed */
@@ -1372,6 +1401,11 @@
/* Set maximum conversion rate */
data->max_convrate = lm90_params[data->kind].max_convrate;
+ if (data->flags & LM90_HAVE_LOCAL_EXT) {
+ data->reg_local_ext = lm90_params[data->kind].reg_local_ext;
+ WARN_ON(data->reg_local_ext == 0);
+ }
+
/* Initialize the LM90 chip */
lm90_init_client(new_client);