Add explicit support for ZL2005. Functionality is almost the same as with other
Zilker Labs / Intersil chips, but limit register detection does not work reliably.
Signed-off-by: Guenter Roeck <guenter.roeck@xxxxxxxxxxxx>
---
Documentation/hwmon/zl6100 | 4 ++++
drivers/hwmon/pmbus/Kconfig | 4 ++--
drivers/hwmon/pmbus/zl6100.c | 19 +++++++++++++++++--
3 files changed, 23 insertions(+), 4 deletions(-)
diff --git a/Documentation/hwmon/zl6100 b/Documentation/hwmon/zl6100
index 7617798..d3bca06 100644
--- a/Documentation/hwmon/zl6100
+++ b/Documentation/hwmon/zl6100
@@ -6,6 +6,10 @@ Supported chips:
Prefix: 'zl2004'
Addresses scanned: -
Datasheet: http://www.intersil.com/data/fn/fn6847.pdf
+ * Intersil / Zilker Labs ZL2005
+ Prefix: 'zl2005'
+ Addresses scanned: -
+ Datasheet: http://www.intersil.com/data/fn/fn6848.pdf
* Intersil / Zilker Labs ZL2006
Prefix: 'zl2006'
Addresses scanned: -
diff --git a/drivers/hwmon/pmbus/Kconfig b/drivers/hwmon/pmbus/Kconfig
index 4b26f51..d357ab2 100644
--- a/drivers/hwmon/pmbus/Kconfig
+++ b/drivers/hwmon/pmbus/Kconfig
@@ -113,8 +113,8 @@ config SENSORS_ZL6100
default n
help
If you say yes here you get hardware monitoring support for Intersil
- ZL2004, ZL2006, ZL2008, ZL2105, ZL2106, ZL6100, and ZL6105 Digital
- DC/DC Controllers.
+ ZL2004, ZL2005, ZL2006, ZL2008, ZL2105, ZL2106, ZL6100, and ZL6105
+ Digital DC/DC Controllers.
This driver can also be built as a module. If so, the module will
be called zl6100.
diff --git a/drivers/hwmon/pmbus/zl6100.c b/drivers/hwmon/pmbus/zl6100.c
index 2bc9800..d78bdcf 100644
--- a/drivers/hwmon/pmbus/zl6100.c
+++ b/drivers/hwmon/pmbus/zl6100.c
@@ -28,7 +28,7 @@
#include <linux/delay.h>
#include "pmbus.h"
-enum chips { zl2004, zl2006, zl2008, zl2105, zl2106, zl6100, zl6105 };
+enum chips { zl2004, zl2005, zl2006, zl2008, zl2105, zl2106, zl6100, zl6105 };
struct zl6100_data {
int id;
@@ -65,6 +65,19 @@ static int zl6100_read_word_data(struct i2c_client *client, int page, int reg)
if (page || reg >= PMBUS_VIRT_BASE)
return -ENXIO;
+ if (data->id == zl2005) {
+ /*
+ * Limit register detection is not reliable on ZL2005.
+ * Make sure registers are not erroneously detected.
+ */
+ switch (reg) {
+ case PMBUS_VOUT_OV_WARN_LIMIT:
+ case PMBUS_VOUT_UV_WARN_LIMIT:
+ case PMBUS_IOUT_OC_WARN_LIMIT:
+ return -ENXIO;
+ }
+ }
+
zl6100_wait(data);
ret = pmbus_read_word_data(client, page, reg);
data->access = ktime_get();
@@ -123,6 +136,7 @@ static int zl6100_write_byte(struct i2c_client *client, int page, u8 value)
static const struct i2c_device_id zl6100_id[] = {
{"zl2004", zl2004},
+ {"zl2005", zl2005},
{"zl2006", zl2006},
{"zl2008", zl2008},
{"zl2105", zl2105},
@@ -177,8 +191,9 @@ static int zl6100_probe(struct i2c_client *client,
data->id = mid->driver_data;
/*
- * ZL2008, ZL2105, and ZL6100 are known to require a wait time
+ * ZL2005, ZL2008, ZL2105, and ZL6100 are known to require a wait time
* between I2C accesses. ZL2004 and ZL6105 are known to be safe.
+ * Other chips have not yet been tested.
*
* Only clear the wait time for chips known to be safe. The wait time
* can be cleared later for additional chips if tests show that it
--
1.7.3.1
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