There are two functions used for the 'get_enable' callback, s626_get_enable_a()
function is used for the channel 0-2 encoders and s626_get_enable_b() is used
for the channel 3-5 encoders.
Refactor the two callbacks into a single s626_get_enable() function and use the
encoder channel number to handle the differenced.
Remove the then unnecessary 'get_enable' member and just call s626_set_enable()
directly.
The 'get_enable' callbacks were not being used by the driver. For now block the
s626_get_enable() function with '#ifdef unused' to prevent a compiler warning.
Signed-off-by: H Hartley Sweeten <hsweeten@xxxxxxxxxxxxxxxxxxx>
Cc: Ian Abbott <abbotti@xxxxxxxxx>
Cc: Greg Kroah-Hartman <gregk@xxxxxxxxxxxxxxxxxxx>
---
drivers/staging/comedi/drivers/s626.c | 28 +++++++++-------------------
1 file changed, 9 insertions(+), 19 deletions(-)
diff --git a/drivers/staging/comedi/drivers/s626.c b/drivers/staging/comedi/drivers/s626.c
index 55ac04b..4f93d6c 100644
--- a/drivers/staging/comedi/drivers/s626.c
+++ b/drivers/staging/comedi/drivers/s626.c
@@ -107,9 +107,6 @@ struct s626_enc_info {
int chan;
/* Pointers to functions that differ for A and B counters: */
- /* Return clock enable. */
- uint16_t (*get_enable)(struct comedi_device *dev,
- const struct s626_enc_info *k);
/* Return interrupt source. */
uint16_t (*get_int_src)(struct comedi_device *dev,
const struct s626_enc_info *k);
@@ -1085,19 +1082,18 @@ static void s626_set_enable(struct comedi_device *dev,
s626_debi_replace(dev, S626_LP_CRB(k->chan), ~mask, set);
}
-static uint16_t s626_get_enable_a(struct comedi_device *dev,
- const struct s626_enc_info *k)
+#ifdef unused
+static uint16_t s626_get_enable(struct comedi_device *dev,
+ const struct s626_enc_info *k)
{
- return S626_GET_CRB_CLKENAB_A(s626_debi_read(dev,
- S626_LP_CRB(k->chan)));
-}
+ uint16_t crb = s626_debi_read(dev, S626_LP_CRB(k->chan));
-static uint16_t s626_get_enable_b(struct comedi_device *dev,
- const struct s626_enc_info *k)
-{
- return S626_GET_CRB_CLKENAB_B(s626_debi_read(dev,
- S626_LP_CRB(k->chan)));
+ if (k->chan < 3)
+ return S626_GET_CRB_CLKENAB_A(crb);
+ else
+ return S626_GET_CRB_CLKENAB_B(crb);
}
+#endif
#ifdef unused
static uint16_t s626_get_latch_source(struct comedi_device *dev,
@@ -1320,7 +1316,6 @@ static void s626_pulse_index_b(struct comedi_device *dev,
static const struct s626_enc_info s626_enc_chan_info[] = {
{
.chan = 0,
- .get_enable = s626_get_enable_a,
.get_int_src = s626_get_int_src_a,
.get_load_trig = s626_get_load_trig_a,
.get_mode = s626_get_mode_a,
@@ -1332,7 +1327,6 @@ static const struct s626_enc_info s626_enc_chan_info[] = {
.my_event_bits = S626_EVBITS(0),
}, {
.chan = 1,
- .get_enable = s626_get_enable_a,
.get_int_src = s626_get_int_src_a,
.get_load_trig = s626_get_load_trig_a,
.get_mode = s626_get_mode_a,
@@ -1344,7 +1338,6 @@ static const struct s626_enc_info s626_enc_chan_info[] = {
.my_event_bits = S626_EVBITS(1),
}, {
.chan = 2,
- .get_enable = s626_get_enable_a,
.get_int_src = s626_get_int_src_a,
.get_load_trig = s626_get_load_trig_a,
.get_mode = s626_get_mode_a,
@@ -1356,7 +1349,6 @@ static const struct s626_enc_info s626_enc_chan_info[] = {
.my_event_bits = S626_EVBITS(2),
}, {
.chan = 3,
- .get_enable = s626_get_enable_b,
.get_int_src = s626_get_int_src_b,
.get_load_trig = s626_get_load_trig_b,
.get_mode = s626_get_mode_b,
@@ -1368,7 +1360,6 @@ static const struct s626_enc_info s626_enc_chan_info[] = {
.my_event_bits = S626_EVBITS(3),
}, {
.chan = 4,
- .get_enable = s626_get_enable_b,
.get_int_src = s626_get_int_src_b,
.get_load_trig = s626_get_load_trig_b,
.get_mode = s626_get_mode_b,
@@ -1380,7 +1371,6 @@ static const struct s626_enc_info s626_enc_chan_info[] = {
.my_event_bits = S626_EVBITS(4),
}, {
.chan = 5,
- .get_enable = s626_get_enable_b,
.get_int_src = s626_get_int_src_b,
.get_load_trig = s626_get_load_trig_b,
.get_mode = s626_get_mode_b,
--
1.9.3
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