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author | Maxim Levitsky <maximlevitsky@gmail.com> | 2010-07-31 11:59:22 -0300 |
---|---|---|
committer | Mauro Carvalho Chehab <mchehab@redhat.com> | 2010-08-08 23:43:00 -0300 |
commit | 4a702ebf61120906696f8366dd2be0653b1643e3 (patch) | |
tree | d83d2662edcf538ebcb6bac103bdcadbed430426 /include/media | |
parent | b378f43fe9466e7712a8b16be64795ffca3a937e (diff) | |
download | kernel_samsung_smdk4412-4a702ebf61120906696f8366dd2be0653b1643e3.zip kernel_samsung_smdk4412-4a702ebf61120906696f8366dd2be0653b1643e3.tar.gz kernel_samsung_smdk4412-4a702ebf61120906696f8366dd2be0653b1643e3.tar.bz2 |
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.h | 23 |
1 files changed, 20 insertions, 3 deletions
diff --git a/include/media/ir-core.h b/include/media/ir-core.h index 197d05a..a781045 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 }; |