The 104-quad-8 driver provides support for Index signal polarity modes
via the "index_polarity" Signal component. This patch exposes the same
functionality through the more standard "polarity" Signal component.
Signed-off-by: William Breathitt Gray <william.gray@xxxxxxxxxx>
---
drivers/counter/104-quad-8.c | 35 +++++++++++++++++++++++++++++++++++
1 file changed, 35 insertions(+)
diff --git a/drivers/counter/104-quad-8.c b/drivers/counter/104-quad-8.c
index 1323edfbe40c..2a9d8259ed4b 100644
--- a/drivers/counter/104-quad-8.c
+++ b/drivers/counter/104-quad-8.c
@@ -549,6 +549,32 @@ static int quad8_index_polarity_set(struct counter_device *counter,
return 0;
}
+static int quad8_polarity_read(struct counter_device *counter,
+ struct counter_signal *signal,
+ enum counter_signal_polarity *polarity)
+{
+ int err;
+ u32 index_polarity;
+
+ err = quad8_index_polarity_get(counter, signal, &index_polarity);
+ if (err)
+ return err;
+
+ *polarity = (index_polarity) ? COUNTER_SIGNAL_POLARITY_POSITIVE :
+ COUNTER_SIGNAL_POLARITY_NEGATIVE;
+
+ return 0;
+}
+
+static int quad8_polarity_write(struct counter_device *counter,
+ struct counter_signal *signal,
+ enum counter_signal_polarity polarity)
+{
+ const u32 pol = (polarity == COUNTER_SIGNAL_POLARITY_POSITIVE) ? 1 : 0;
+
+ return quad8_index_polarity_set(counter, signal, pol);
+}
+
static const char *const quad8_synchronous_modes[] = {
"non-synchronous",
"synchronous"
@@ -977,6 +1003,13 @@ static struct counter_comp quad8_signal_ext[] = {
quad8_signal_fck_prescaler_write)
};
+static const enum counter_signal_polarity quad8_polarities[] = {
+ COUNTER_SIGNAL_POLARITY_POSITIVE,
+ COUNTER_SIGNAL_POLARITY_NEGATIVE,
+};
+
+static DEFINE_COUNTER_AVAILABLE(quad8_polarity_available, quad8_polarities);
+
static DEFINE_COUNTER_ENUM(quad8_index_pol_enum, quad8_index_polarity_modes);
static DEFINE_COUNTER_ENUM(quad8_synch_mode_enum, quad8_synchronous_modes);
@@ -984,6 +1017,8 @@ static struct counter_comp quad8_index_ext[] = {
COUNTER_COMP_SIGNAL_ENUM("index_polarity", quad8_index_polarity_get,
quad8_index_polarity_set,
quad8_index_pol_enum),
+ COUNTER_COMP_POLARITY(quad8_polarity_read, quad8_polarity_write,
+ quad8_polarity_available),
COUNTER_COMP_SIGNAL_ENUM("synchronous_mode", quad8_synchronous_mode_get,
quad8_synchronous_mode_set,
quad8_synch_mode_enum),
--
2.37.3
