diff options
Diffstat (limited to 'drivers/hwmon/lm90.c')
-rw-r--r-- | drivers/hwmon/lm90.c | 54 |
1 files changed, 39 insertions, 15 deletions
diff --git a/drivers/hwmon/lm90.c b/drivers/hwmon/lm90.c index 1a1d7bfcb30b..618052c6cdb6 100644 --- a/drivers/hwmon/lm90.c +++ b/drivers/hwmon/lm90.c @@ -69,10 +69,10 @@ * This driver also supports the G781 from GMT. This device is compatible * with the ADM1032. * - * This driver also supports TMP451 from Texas Instruments. This device is - * supported in both compatibility and extended mode. It's mostly compatible - * with ADT7461 except for local temperature low byte register and max - * conversion rate. + * This driver also supports TMP451 and TMP461 from Texas Instruments. + * Those devices are supported in both compatibility and extended mode. + * They are mostly compatible with ADT7461 except for local temperature + * low byte register and max conversion rate. * * Since the LM90 was the first chipset supported by this driver, most * comments will refer to this chipset, but are actually general and @@ -112,7 +112,7 @@ static const unsigned short normal_i2c[] = { 0x4d, 0x4e, 0x4f, I2C_CLIENT_END }; enum chips { lm90, adm1032, lm99, lm86, max6657, max6659, adt7461, max6680, - max6646, w83l771, max6696, sa56004, g781, tmp451, max6654 }; + max6646, w83l771, max6696, sa56004, g781, tmp451, tmp461, max6654 }; /* * The LM90 registers @@ -168,8 +168,12 @@ enum chips { lm90, adm1032, lm99, lm86, max6657, max6659, adt7461, max6680, #define LM90_MAX_CONVRATE_MS 16000 /* Maximum conversion rate in ms */ -/* TMP451 registers */ +/* TMP451/TMP461 registers */ #define TMP451_REG_R_LOCAL_TEMPL 0x15 +#define TMP451_REG_CONALERT 0x22 + +#define TMP461_REG_CHEN 0x16 +#define TMP461_REG_DFC 0x24 /* * Device flags @@ -230,6 +234,7 @@ static const struct i2c_device_id lm90_id[] = { { "w83l771", w83l771 }, { "sa56004", sa56004 }, { "tmp451", tmp451 }, + { "tmp461", tmp461 }, { } }; MODULE_DEVICE_TABLE(i2c, lm90_id); @@ -327,6 +332,10 @@ static const struct of_device_id __maybe_unused lm90_of_match[] = { .compatible = "ti,tmp451", .data = (void *)tmp451 }, + { + .compatible = "ti,tmp461", + .data = (void *)tmp461 + }, { }, }; MODULE_DEVICE_TABLE(of, lm90_of_match); @@ -428,6 +437,13 @@ static const struct lm90_params lm90_params[] = { .max_convrate = 9, .reg_local_ext = TMP451_REG_R_LOCAL_TEMPL, }, + [tmp461] = { + .flags = LM90_HAVE_OFFSET | LM90_HAVE_REM_LIMIT_EXT + | LM90_HAVE_BROKEN_ALERT | LM90_HAVE_EXTENDED_TEMP, + .alert_alarms = 0x7c, + .max_convrate = 9, + .reg_local_ext = TMP451_REG_R_LOCAL_TEMPL, + }, }; /* @@ -1628,18 +1644,26 @@ static int lm90_detect(struct i2c_client *client, && convrate <= 0x08) name = "g781"; } else - if (address == 0x4C - && man_id == 0x55) { /* Texas Instruments */ - int local_ext; + if (man_id == 0x55 && chip_id == 0x00 && + (config1 & 0x1B) == 0x00 && convrate <= 0x09) { + int local_ext, conalert, chen, dfc; local_ext = i2c_smbus_read_byte_data(client, TMP451_REG_R_LOCAL_TEMPL); - - if (chip_id == 0x00 /* TMP451 */ - && (config1 & 0x1B) == 0x00 - && convrate <= 0x09 - && (local_ext & 0x0F) == 0x00) - name = "tmp451"; + conalert = i2c_smbus_read_byte_data(client, + TMP451_REG_CONALERT); + chen = i2c_smbus_read_byte_data(client, TMP461_REG_CHEN); + dfc = i2c_smbus_read_byte_data(client, TMP461_REG_DFC); + + if ((local_ext & 0x0F) == 0x00 && + (conalert & 0xf1) == 0x01 && + (chen & 0xfc) == 0x00 && + (dfc & 0xfc) == 0x00) { + if (address == 0x4c && !(chen & 0x03)) + name = "tmp451"; + else if (address >= 0x48 && address <= 0x4f) + name = "tmp461"; + } } if (!name) { /* identification failed */ |