From: "Edward A. James" <eajames@xxxxxxxxxx> Higher byte of the status register wasn't available for boolean alarms. Store the STATUS_WORD register if it's available, and read it out when queried by boolean attributes. The method of storing and retrieving the status reg is a bit hacky but I couldn't work out another way without doubling the storage requirement of every pmbus device or tearing up more of the pmbus core code. Signed-off-by: Edward A. James <eajames@xxxxxxxxxx> --- drivers/hwmon/pmbus/pmbus_core.c | 37 +++++++++++++++++++++++++++---------- 1 file changed, 27 insertions(+), 10 deletions(-) diff --git a/drivers/hwmon/pmbus/pmbus_core.c b/drivers/hwmon/pmbus/pmbus_core.c index 8511aba..3b53fa7 100644 --- a/drivers/hwmon/pmbus/pmbus_core.c +++ b/drivers/hwmon/pmbus/pmbus_core.c @@ -43,7 +43,7 @@ * Index into status register array, per status register group */ #define PB_STATUS_BASE 0 -#define PB_STATUS_VOUT_BASE (PB_STATUS_BASE + PMBUS_PAGES) +#define PB_STATUS_VOUT_BASE (PB_STATUS_BASE + (PMBUS_PAGES * 2)) #define PB_STATUS_IOUT_BASE (PB_STATUS_VOUT_BASE + PMBUS_PAGES) #define PB_STATUS_FAN_BASE (PB_STATUS_IOUT_BASE + PMBUS_PAGES) #define PB_STATUS_FAN34_BASE (PB_STATUS_FAN_BASE + PMBUS_PAGES) @@ -421,11 +421,14 @@ static struct pmbus_data *pmbus_update_device(struct device *dev) mutex_lock(&data->update_lock); if (time_after(jiffies, data->last_updated + HZ) || !data->valid) { - int i, j; + int i, j, status; for (i = 0; i < info->pages; i++) { - data->status[PB_STATUS_BASE + i] = - data->read_status(client, i); + status = data->read_status(client, i); + data->status[PB_STATUS_BASE + (i * 2)] = status; + data->status[PB_STATUS_BASE + (i * 2) + 1] = + status >> 8; + for (j = 0; j < ARRAY_SIZE(pmbus_status); j++) { struct _pmbus_status *s = &pmbus_status[j]; @@ -718,6 +721,18 @@ static u16 pmbus_data2reg(struct pmbus_data *data, return regval; } +static int pmbus_get_status(struct pmbus_data *data, int reg) +{ + int ret; + + if (reg < PB_STATUS_BASE + PMBUS_PAGES) + ret = data->status[reg * 2] | (data->status[(reg * 2) + 1] << 8); + else + ret = data->status[reg]; + + return ret; +} + /* * Return boolean calculated from converted data. * <index> defines a status register index and mask. @@ -746,12 +761,12 @@ static int pmbus_get_boolean(struct pmbus_data *data, struct pmbus_boolean *b, { struct pmbus_sensor *s1 = b->s1; struct pmbus_sensor *s2 = b->s2; - u16 reg = (index >> 8) & 0xffff; - u8 mask = index & 0xff; + u16 reg = index >> 16; + u16 mask = index & 0xffff; int ret, status; u8 regval; - status = data->status[reg]; + status = pmbus_get_status(data, reg); if (status < 0) return status; @@ -890,7 +905,7 @@ static int pmbus_add_boolean(struct pmbus_data *data, const char *name, const char *type, int seq, struct pmbus_sensor *s1, struct pmbus_sensor *s2, - u16 reg, u8 mask) + u16 reg, u16 mask) { struct pmbus_boolean *boolean; struct sensor_device_attribute *a; @@ -906,7 +921,7 @@ static int pmbus_add_boolean(struct pmbus_data *data, boolean->s1 = s1; boolean->s2 = s2; pmbus_attr_init(a, boolean->name, S_IRUGO, pmbus_show_boolean, NULL, - (reg << 8) | mask); + (reg << 16) | mask); return pmbus_add_attribute(data, &a->dev_attr.attr); } @@ -992,7 +1007,7 @@ struct pmbus_limit_attr { */ struct pmbus_sensor_attr { u16 reg; /* sensor register */ - u8 gbit; /* generic status bit */ + u16 gbit; /* generic status bit */ u8 nlimit; /* # of limit registers */ enum pmbus_sensor_classes class;/* sensor class */ const char *label; /* sensor label */ @@ -1337,6 +1352,7 @@ static int pmbus_add_sensor_attrs(struct i2c_client *client, .func = PMBUS_HAVE_IIN, .sfunc = PMBUS_HAVE_STATUS_INPUT, .sbase = PB_STATUS_INPUT_BASE, + .gbit = PB_STATUS_INPUT, .limit = iin_limit_attrs, .nlimit = ARRAY_SIZE(iin_limit_attrs), }, { @@ -1421,6 +1437,7 @@ static int pmbus_add_sensor_attrs(struct i2c_client *client, .func = PMBUS_HAVE_PIN, .sfunc = PMBUS_HAVE_STATUS_INPUT, .sbase = PB_STATUS_INPUT_BASE, + .gbit = PB_STATUS_INPUT, .limit = pin_limit_attrs, .nlimit = ARRAY_SIZE(pin_limit_attrs), }, { -- 1.8.3.1 -- To unsubscribe from this list: send the line "unsubscribe linux-hwmon" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html