[PATCH] IR: only initially enable protocol that matches loaded keymap

[Jarod Wilson <jarod@redhat.com>]

Rather than loading all IR protocol decoders as enabled when bringing
up a new device, only enable the IR protocol decoder that matches the
keymap being loaded. Additional decoders can be enabled on the fly by
those that need to, either by twiddling sysfs bits or by using the
ir-keytable util from v4l-utils.

Functional testing done with the mceusb driver, and it behaves as expected,
only the rc6 decoder is enabled, keys are all handled properly, etc.

Signed-off-by: Jarod Wilson <jarod@redhat.com>
---
 drivers/media/IR/ir-jvc-decoder.c  |    4 +++-
 drivers/media/IR/ir-nec-decoder.c  |    4 +++-
 drivers/media/IR/ir-rc5-decoder.c  |    4 +++-
 drivers/media/IR/ir-rc6-decoder.c  |    4 +++-
 drivers/media/IR/ir-sony-decoder.c |    4 +++-
 5 files changed, 15 insertions(+), 5 deletions(-)

diff --git a/drivers/media/IR/ir-jvc-decoder.c b/drivers/media/IR/ir-jvc-decoder.c
index 0b80494..b02e801 100644
--- a/drivers/media/IR/ir-jvc-decoder.c
+++ b/drivers/media/IR/ir-jvc-decoder.c
@@ -253,6 +253,7 @@ static int ir_jvc_register(struct input_dev *input_dev)
 {
 	struct ir_input_dev *ir_dev = input_get_drvdata(input_dev);
 	struct decoder_data *data;
+	u64 ir_type = ir_dev->rc_tab.ir_type;
 	int rc;
 
 	rc = sysfs_create_group(&ir_dev->dev.kobj, &decoder_attribute_group);
@@ -266,7 +267,8 @@ static int ir_jvc_register(struct input_dev *input_dev)
 	}
 
 	data->ir_dev = ir_dev;
-	data->enabled = 1;
+	if (ir_type == IR_TYPE_JVC || ir_type == IR_TYPE_UNKNOWN)
+		data->enabled = 1;
 
 	spin_lock(&decoder_lock);
 	list_add_tail(&data->list, &decoder_list);
diff --git a/drivers/media/IR/ir-nec-decoder.c b/drivers/media/IR/ir-nec-decoder.c
index ba79233..6059a1f 100644
--- a/drivers/media/IR/ir-nec-decoder.c
+++ b/drivers/media/IR/ir-nec-decoder.c
@@ -260,6 +260,7 @@ static int ir_nec_register(struct input_dev *input_dev)
 {
 	struct ir_input_dev *ir_dev = input_get_drvdata(input_dev);
 	struct decoder_data *data;
+	u64 ir_type = ir_dev->rc_tab.ir_type;
 	int rc;
 
 	rc = sysfs_create_group(&ir_dev->dev.kobj, &decoder_attribute_group);
@@ -273,7 +274,8 @@ static int ir_nec_register(struct input_dev *input_dev)
 	}
 
 	data->ir_dev = ir_dev;
-	data->enabled = 1;
+	if (ir_type == IR_TYPE_NEC || ir_type == IR_TYPE_UNKNOWN)
+		data->enabled = 1;
 
 	spin_lock(&decoder_lock);
 	list_add_tail(&data->list, &decoder_list);
diff --git a/drivers/media/IR/ir-rc5-decoder.c b/drivers/media/IR/ir-rc5-decoder.c
index 23cdb1b..4aa797b 100644
--- a/drivers/media/IR/ir-rc5-decoder.c
+++ b/drivers/media/IR/ir-rc5-decoder.c
@@ -256,6 +256,7 @@ static int ir_rc5_register(struct input_dev *input_dev)
 {
 	struct ir_input_dev *ir_dev = input_get_drvdata(input_dev);
 	struct decoder_data *data;
+	u64 ir_type = ir_dev->rc_tab.ir_type;
 	int rc;
 
 	rc = sysfs_create_group(&ir_dev->dev.kobj, &decoder_attribute_group);
@@ -269,7 +270,8 @@ static int ir_rc5_register(struct input_dev *input_dev)
 	}
 
 	data->ir_dev = ir_dev;
-	data->enabled = 1;
+	if (ir_type == IR_TYPE_RC5 || ir_type == IR_TYPE_UNKNOWN)
+		data->enabled = 1;
 
 	spin_lock(&decoder_lock);
 	list_add_tail(&data->list, &decoder_list);
diff --git a/drivers/media/IR/ir-rc6-decoder.c b/drivers/media/IR/ir-rc6-decoder.c
index 2bf479f..9f61da2 100644
--- a/drivers/media/IR/ir-rc6-decoder.c
+++ b/drivers/media/IR/ir-rc6-decoder.c
@@ -352,6 +352,7 @@ static int ir_rc6_register(struct input_dev *input_dev)
 {
 	struct ir_input_dev *ir_dev = input_get_drvdata(input_dev);
 	struct decoder_data *data;
+	u64 ir_type = ir_dev->rc_tab.ir_type;
 	int rc;
 
 	rc = sysfs_create_group(&ir_dev->dev.kobj, &decoder_attribute_group);
@@ -365,7 +366,8 @@ static int ir_rc6_register(struct input_dev *input_dev)
 	}
 
 	data->ir_dev = ir_dev;
-	data->enabled = 1;
+	if (ir_type == IR_TYPE_RC6 || ir_type == IR_TYPE_UNKNOWN)
+		data->enabled = 1;
 
 	spin_lock(&decoder_lock);
 	list_add_tail(&data->list, &decoder_list);
diff --git a/drivers/media/IR/ir-sony-decoder.c b/drivers/media/IR/ir-sony-decoder.c
index 9f440c5..219075f 100644
--- a/drivers/media/IR/ir-sony-decoder.c
+++ b/drivers/media/IR/ir-sony-decoder.c
@@ -245,6 +245,7 @@ static int ir_sony_register(struct input_dev *input_dev)
 {
 	struct ir_input_dev *ir_dev = input_get_drvdata(input_dev);
 	struct decoder_data *data;
+	u64 ir_type = ir_dev->rc_tab.ir_type;
 	int rc;
 
 	rc = sysfs_create_group(&ir_dev->dev.kobj, &decoder_attribute_group);
@@ -258,7 +259,8 @@ static int ir_sony_register(struct input_dev *input_dev)
 	}
 
 	data->ir_dev = ir_dev;
-	data->enabled = 1;
+	if (ir_type == IR_TYPE_SONY || ir_type == IR_TYPE_UNKNOWN)
+		data->enabled = 1;
 
 	spin_lock(&decoder_lock);
 	list_add_tail(&data->list, &decoder_list);
-- 
1.6.5.2

-- 
Jarod Wilson
jarod@redhat.com