From: James Hogan <james@xxxxxxxxxxxxx>
Add the s_wakeup_filter callback to the rc-loopback driver, which instead of
setting the filter just feeds the scancode back through the input device
so that it can be verified.
Signed-off-by: James Hogan <james@xxxxxxxxxxxxx>
Signed-off-by: Antti Seppälä <a.seppala@xxxxxxxxx>
Cc: David Härdeman <david@xxxxxxxxxxx>
---
Notes:
Changes in v3:
- Ported to apply against latest media-tree
- Checkpatch.pl fixes
Changes in v2:
- Move img-ir-raw test code to rc-loopback.
- Handle new encode API, specifically -ENOBUFS when the buffer isn't
long enough.
- Set encode_wakeup so that the set of allowed wakeup protocols matches
the set of raw IR encoders.
drivers/media/rc/rc-loopback.c | 36 ++++++++++++++++++++++++++++++++++++
1 file changed, 36 insertions(+)
diff --git a/drivers/media/rc/rc-loopback.c b/drivers/media/rc/rc-loopback.c
index 63dace8..d8bdf63 100644
--- a/drivers/media/rc/rc-loopback.c
+++ b/drivers/media/rc/rc-loopback.c
@@ -26,6 +26,7 @@
#include <linux/device.h>
#include <linux/module.h>
#include <linux/sched.h>
+#include <linux/slab.h>
#include <media/rc-core.h>
#define DRIVER_NAME "rc-loopback"
@@ -176,6 +177,39 @@ static int loop_set_carrier_report(struct rc_dev *dev, int enable)
return 0;
}
+static int loop_set_wakeup_filter(struct rc_dev *dev,
+ struct rc_scancode_filter *sc_filter)
+{
+ static const unsigned int max = 512;
+ struct ir_raw_event *raw;
+ int ret;
+ int i;
+
+ /* fine to disable filter */
+ if (!sc_filter->mask)
+ return 0;
+
+ /* encode the specified filter and loop it back */
+ raw = kmalloc_array(max, sizeof(*raw), GFP_KERNEL);
+ ret = ir_raw_encode_scancode(dev->enabled_wakeup_protocols, sc_filter,
+ raw, max);
+ /* still loop back the partial raw IR even if it's incomplete */
+ if (ret == -ENOBUFS)
+ ret = max;
+ if (ret >= 0) {
+ /* do the loopback */
+ for (i = 0; i < ret; ++i)
+ ir_raw_event_store(dev, &raw[i]);
+ ir_raw_event_handle(dev);
+
+ ret = 0;
+ }
+
+ kfree(raw);
+
+ return ret;
+}
+
static int __init loop_init(void)
{
struct rc_dev *rc;
@@ -195,6 +229,7 @@ static int __init loop_init(void)
rc->map_name = RC_MAP_EMPTY;
rc->priv = &loopdev;
rc->driver_type = RC_DRIVER_IR_RAW;
+ rc->encode_wakeup = true;
rc->allowed_protocols = RC_BIT_ALL;
rc->timeout = 100 * 1000 * 1000; /* 100 ms */
rc->min_timeout = 1;
@@ -209,6 +244,7 @@ static int __init loop_init(void)
rc->s_idle = loop_set_idle;
rc->s_learning_mode = loop_set_learning_mode;
rc->s_carrier_report = loop_set_carrier_report;
+ rc->s_wakeup_filter = loop_set_wakeup_filter;
loopdev.txmask = RXMASK_REGULAR;
loopdev.txcarrier = 36000;
--
2.0.5
--
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