@@ -84,7 +84,7 @@ static const struct regmap_config max31827_regmap = {
};
static int shutdown_write(struct max31827_state *st, unsigned int reg,
- unsigned int val)
+ unsigned int mask, unsigned int val)
{
unsigned int cfg;
unsigned int cnv_rate;
@@ -101,7 +101,10 @@ static int shutdown_write(struct max31827_state *st, unsigned int reg,
mutex_lock(&st->lock);
if (!st->enable) {
- ret = regmap_write(st->regmap, reg, val);
+ if (!mask)
+ ret = regmap_write(st->regmap, reg, val);
+ else
+ ret = regmap_update_bits(st->regmap, reg, mask, val);
goto unlock;
}
@@ -116,7 +119,11 @@ static int shutdown_write(struct max31827_state *st, unsigned int reg,
if (ret)
goto unlock;
- ret = regmap_write(st->regmap, reg, val);
+ if (!mask)
+ ret = regmap_write(st->regmap, reg, val);
+ else
+ ret = regmap_update_bits(st->regmap, reg, mask, val);
+
if (ret)
goto unlock;
@@ -134,7 +141,7 @@ static int write_alarm_val(struct max31827_state *st, unsigned int reg,
{
val = MAX31827_M_DGR_TO_16_BIT(val);
- return shutdown_write(st, reg, val);
+ return shutdown_write(st, reg, 0, val);
}
static umode_t max31827_is_visible(const void *state,
Added 'mask' parameter to the shutdown_write() function. Now it can either write or update bits, depending on the value of mask. This is needed, because for alarms a write is necessary, but for resolution only the resolution bits should be updated. Signed-off-by: Daniel Matyas <daniel.matyas@analog.com> --- v4 -> v5: No change. v4: Added patch. drivers/hwmon/max31827.c | 15 +++++++++++---- 1 file changed, 11 insertions(+), 4 deletions(-)