1 files changed, 32 insertions, 144 deletions

diff --git a/drivers/media/IR/ir-nec-decoder.c b/drivers/media/IR/ir-nec-decoder.c
index ba79233112ef..d597421d6547 100644
--- a/drivers/media/IR/ir-nec-decoder.c
+++ b/drivers/media/IR/ir-nec-decoder.c
@@ -20,16 +20,13 @@
 #define NEC_HEADER_PULSE	(16 * NEC_UNIT)
 #define NECX_HEADER_PULSE	(8  * NEC_UNIT) /* Less common NEC variant */
 #define NEC_HEADER_SPACE	(8  * NEC_UNIT)
-#define NEC_REPEAT_SPACE	(8  * NEC_UNIT)
+#define NEC_REPEAT_SPACE	(4  * NEC_UNIT)
 #define NEC_BIT_PULSE		(1  * NEC_UNIT)
 #define NEC_BIT_0_SPACE		(1  * NEC_UNIT)
 #define NEC_BIT_1_SPACE		(3  * NEC_UNIT)
 #define	NEC_TRAILER_PULSE	(1  * NEC_UNIT)
 #define	NEC_TRAILER_SPACE	(10 * NEC_UNIT) /* even longer in reality */
-
-/* Used to register nec_decoder clients */
-static LIST_HEAD(decoder_list);
-static DEFINE_SPINLOCK(decoder_lock);
+#define NECX_REPEAT_BITS	1
 
 enum nec_state {
 	STATE_INACTIVE,
@@ -40,84 +37,6 @@ enum nec_state {
 	STATE_TRAILER_SPACE,
 };
 
-struct decoder_data {
-	struct list_head	list;
-	struct ir_input_dev	*ir_dev;
-	int			enabled:1;
-
-	/* State machine control */
-	enum nec_state		state;
-	u32			nec_bits;
-	unsigned		count;
-};
-
-
-/**
- * get_decoder_data()	- gets decoder data
- * @input_dev:	input device
- *
- * Returns the struct decoder_data that corresponds to a device
- */
-static struct decoder_data *get_decoder_data(struct  ir_input_dev *ir_dev)
-{
-	struct decoder_data *data = NULL;
-
-	spin_lock(&decoder_lock);
-	list_for_each_entry(data, &decoder_list, list) {
-		if (data->ir_dev == ir_dev)
-			break;
-	}
-	spin_unlock(&decoder_lock);
-	return data;
-}
-
-static ssize_t store_enabled(struct device *d,
-			     struct device_attribute *mattr,
-			     const char *buf,
-			     size_t len)
-{
-	unsigned long value;
-	struct ir_input_dev *ir_dev = dev_get_drvdata(d);
-	struct decoder_data *data = get_decoder_data(ir_dev);
-
-	if (!data)
-		return -EINVAL;
-
-	if (strict_strtoul(buf, 10, &value) || value > 1)
-		return -EINVAL;
-
-	data->enabled = value;
-
-	return len;
-}
-
-static ssize_t show_enabled(struct device *d,
-			     struct device_attribute *mattr, char *buf)
-{
-	struct ir_input_dev *ir_dev = dev_get_drvdata(d);
-	struct decoder_data *data = get_decoder_data(ir_dev);
-
-	if (!data)
-		return -EINVAL;
-
-	if (data->enabled)
-		return sprintf(buf, "1\n");
-	else
-	return sprintf(buf, "0\n");
-}
-
-static DEVICE_ATTR(enabled, S_IRUGO | S_IWUSR, show_enabled, store_enabled);
-
-static struct attribute *decoder_attributes[] = {
-	&dev_attr_enabled.attr,
-	NULL
-};
-
-static struct attribute_group decoder_attribute_group = {
-	.name	= "nec_decoder",
-	.attrs	= decoder_attributes,
-};
-
 /**
  * ir_nec_decode() - Decode one NEC pulse or space
  * @input_dev:	the struct input_dev descriptor of the device
@@ -127,16 +46,12 @@ static struct attribute_group decoder_attribute_group = {
  */
 static int ir_nec_decode(struct input_dev *input_dev, struct ir_raw_event ev)
 {
-	struct decoder_data *data;
 	struct ir_input_dev *ir_dev = input_get_drvdata(input_dev);
+	struct nec_dec *data = &ir_dev->raw->nec;
 	u32 scancode;
 	u8 address, not_address, command, not_command;
 
-	data = get_decoder_data(ir_dev);
-	if (!data)
-		return -EINVAL;
-
-	if (!data->enabled)
+	if (!(ir_dev->raw->enabled_protocols & IR_TYPE_NEC))
 		return 0;
 
 	if (IS_RESET(ev)) {
@@ -153,8 +68,12 @@ static int ir_nec_decode(struct input_dev *input_dev, struct ir_raw_event ev)
 		if (!ev.pulse)
 			break;
 
-		if (!eq_margin(ev.duration, NEC_HEADER_PULSE, NEC_UNIT / 2) &&
-		    !eq_margin(ev.duration, NECX_HEADER_PULSE, NEC_UNIT / 2))
+		if (eq_margin(ev.duration, NEC_HEADER_PULSE, NEC_UNIT / 2)) {
+			data->is_nec_x = false;
+			data->necx_repeat = false;
+		} else if (eq_margin(ev.duration, NECX_HEADER_PULSE, NEC_UNIT / 2))
+			data->is_nec_x = true;
+		else
 			break;
 
 		data->count = 0;
@@ -191,9 +110,20 @@ static int ir_nec_decode(struct input_dev *input_dev, struct ir_raw_event ev)
 		if (ev.pulse)
 			break;
 
-		data->nec_bits <<= 1;
+		if (data->necx_repeat && data->count == NECX_REPEAT_BITS &&
+			geq_margin(ev.duration,
+			NEC_TRAILER_SPACE, NEC_UNIT / 2)) {
+				IR_dprintk(1, "Repeat last key\n");
+				ir_repeat(input_dev);
+				data->state = STATE_INACTIVE;
+				return 0;
+
+		} else if (data->count > NECX_REPEAT_BITS)
+			data->necx_repeat = false;
+
+		data->bits <<= 1;
 		if (eq_margin(ev.duration, NEC_BIT_1_SPACE, NEC_UNIT / 2))
-			data->nec_bits |= 1;
+			data->bits |= 1;
 		else if (!eq_margin(ev.duration, NEC_BIT_0_SPACE, NEC_UNIT / 2))
 			break;
 		data->count++;
@@ -222,14 +152,14 @@ static int ir_nec_decode(struct input_dev *input_dev, struct ir_raw_event ev)
 		if (!geq_margin(ev.duration, NEC_TRAILER_SPACE, NEC_UNIT / 2))
 			break;
 
-		address     = bitrev8((data->nec_bits >> 24) & 0xff);
-		not_address = bitrev8((data->nec_bits >> 16) & 0xff);
-		command	    = bitrev8((data->nec_bits >>  8) & 0xff);
-		not_command = bitrev8((data->nec_bits >>  0) & 0xff);
+		address     = bitrev8((data->bits >> 24) & 0xff);
+		not_address = bitrev8((data->bits >> 16) & 0xff);
+		command	    = bitrev8((data->bits >>  8) & 0xff);
+		not_command = bitrev8((data->bits >>  0) & 0xff);
 
 		if ((command ^ not_command) != 0xff) {
 			IR_dprintk(1, "NEC checksum error: received 0x%08x\n",
-				   data->nec_bits);
+				   data->bits);
 			break;
 		}
 
@@ -245,6 +175,9 @@ static int ir_nec_decode(struct input_dev *input_dev, struct ir_raw_event ev)
 			IR_dprintk(1, "NEC scancode 0x%04x\n", scancode);
 		}
 
+		if (data->is_nec_x)
+			data->necx_repeat = true;
+
 		ir_keydown(input_dev, scancode, 0);
 		data->state = STATE_INACTIVE;
 		return 0;
@@ -256,54 +189,9 @@ static int ir_nec_decode(struct input_dev *input_dev, struct ir_raw_event ev)
 	return -EINVAL;
 }
 
-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;
-	int rc;
-
-	rc = sysfs_create_group(&ir_dev->dev.kobj, &decoder_attribute_group);
-	if (rc < 0)
-		return rc;
-
-	data = kzalloc(sizeof(*data), GFP_KERNEL);
-	if (!data) {
-		sysfs_remove_group(&ir_dev->dev.kobj, &decoder_attribute_group);
-		return -ENOMEM;
-	}
-
-	data->ir_dev = ir_dev;
-	data->enabled = 1;
-
-	spin_lock(&decoder_lock);
-	list_add_tail(&data->list, &decoder_list);
-	spin_unlock(&decoder_lock);
-
-	return 0;
-}
-
-static int ir_nec_unregister(struct input_dev *input_dev)
-{
-	struct ir_input_dev *ir_dev = input_get_drvdata(input_dev);
-	static struct decoder_data *data;
-
-	data = get_decoder_data(ir_dev);
-	if (!data)
-		return 0;
-
-	sysfs_remove_group(&ir_dev->dev.kobj, &decoder_attribute_group);
-
-	spin_lock(&decoder_lock);
-	list_del(&data->list);
-	spin_unlock(&decoder_lock);
-
-	return 0;
-}
-
 static struct ir_raw_handler nec_handler = {
+	.protocols	= IR_TYPE_NEC,
 	.decode		= ir_nec_decode,
-	.raw_register	= ir_nec_register,
-	.raw_unregister	= ir_nec_unregister,
 };
 
 static int __init ir_nec_decode_init(void)