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authorMaxim Levitsky <maximlevitsky@gmail.com>2010-07-31 11:59:22 -0300
committerMauro Carvalho Chehab <mchehab@redhat.com>2010-08-08 23:43:00 -0300
commit4a702ebf61120906696f8366dd2be0653b1643e3 (patch)
treed83d2662edcf538ebcb6bac103bdcadbed430426 /include/media
parentb378f43fe9466e7712a8b16be64795ffca3a937e (diff)
V4L/DVB: IR: add helper function for hardware with small o/b buffer
Some ir input devices have small buffer, and interrupt the host each time it is full (or half full) Add a helper that automaticly handles timeouts, and also automaticly merges samples of same time (space-space) Such samples might be placed by hardware because size of sample in the buffer is small (a byte for example). Also remove constness from ir_dev_props, because it now contains timeout settings that driver might want to change Signed-off-by: Maxim Levitsky <maximlevitsky@gmail.com> Acked-by: Jarod Wilson <jarod@redhat.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Diffstat (limited to 'include/media')
-rw-r--r--include/media/ir-core.h23
1 files changed, 20 insertions, 3 deletions
diff --git a/include/media/ir-core.h b/include/media/ir-core.h
index 197d05aa83dc..a781045aeed5 100644
--- a/include/media/ir-core.h
+++ b/include/media/ir-core.h
@@ -41,6 +41,9 @@ enum rc_driver_type {
* anything with it. Yet, as the same keycode table can be used with other
* devices, a mask is provided to allow its usage. Drivers should generally
* leave this field in blank
+ * @timeout: optional time after which device stops sending data
+ * @min_timeout: minimum timeout supported by device
+ * @max_timeout: maximum timeout supported by device
* @priv: driver-specific data, to be used on the callbacks
* @change_protocol: allow changing the protocol used on hardware decoders
* @open: callback to allow drivers to enable polling/irq when IR input device
@@ -50,11 +53,19 @@ enum rc_driver_type {
* @s_tx_mask: set transmitter mask (for devices with multiple tx outputs)
* @s_tx_carrier: set transmit carrier frequency
* @tx_ir: transmit IR
+ * @s_idle: optional: enable/disable hardware idle mode, upon which,
+ * device doesn't interrupt host untill it sees IR data
*/
struct ir_dev_props {
enum rc_driver_type driver_type;
unsigned long allowed_protos;
u32 scanmask;
+
+ u32 timeout;
+ u32 min_timeout;
+ u32 max_timeout;
+
+
void *priv;
int (*change_protocol)(void *priv, u64 ir_type);
int (*open)(void *priv);
@@ -62,6 +73,7 @@ struct ir_dev_props {
int (*s_tx_mask)(void *priv, u32 mask);
int (*s_tx_carrier)(void *priv, u32 carrier);
int (*tx_ir)(void *priv, int *txbuf, u32 n);
+ void (*s_idle)(void *priv, int enable);
};
struct ir_input_dev {
@@ -69,9 +81,10 @@ struct ir_input_dev {
char *driver_name; /* Name of the driver module */
struct ir_scancode_table rc_tab; /* scan/key table */
unsigned long devno; /* device number */
- const struct ir_dev_props *props; /* Device properties */
+ struct ir_dev_props *props; /* Device properties */
struct ir_raw_event_ctrl *raw; /* for raw pulse/space events */
struct input_dev *input_dev; /* the input device associated with this device */
+ bool idle;
/* key info - needed by IR keycode handlers */
spinlock_t keylock; /* protects the below members */
@@ -95,12 +108,12 @@ enum raw_event_type {
/* From ir-keytable.c */
int __ir_input_register(struct input_dev *dev,
const struct ir_scancode_table *ir_codes,
- const struct ir_dev_props *props,
+ struct ir_dev_props *props,
const char *driver_name);
static inline int ir_input_register(struct input_dev *dev,
const char *map_name,
- const struct ir_dev_props *props,
+ struct ir_dev_props *props,
const char *driver_name) {
struct ir_scancode_table *ir_codes;
struct ir_input_dev *ir_dev;
@@ -148,6 +161,10 @@ struct ir_raw_event {
void ir_raw_event_handle(struct input_dev *input_dev);
int ir_raw_event_store(struct input_dev *input_dev, struct ir_raw_event *ev);
int ir_raw_event_store_edge(struct input_dev *input_dev, enum raw_event_type type);
+int ir_raw_event_store_with_filter(struct input_dev *input_dev,
+ struct ir_raw_event *ev);
+void ir_raw_event_set_idle(struct input_dev *input_dev, int idle);
+
static inline void ir_raw_event_reset(struct input_dev *input_dev)
{
struct ir_raw_event ev = { .pulse = false, .duration = 0 };