Messages in this thread Patch in this message | | | From | Daniel Matyas <> | Subject | [PATCH v5 3/4] hwmon: max31827: Update bits with shutdown_write() | Date | Thu, 26 Oct 2023 17:44:03 +0300 |
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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(-)
diff --git a/drivers/hwmon/max31827.c b/drivers/hwmon/max31827.c index 446232fa1710..8ba387b51157 100644 --- a/drivers/hwmon/max31827.c +++ b/drivers/hwmon/max31827.c @@ -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, -- 2.34.1
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