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[media] media: rc: reduce size of struct ir_raw_event 

struct ir_raw_event currently has a size of 12 bytes on most (all?)
architectures. This can be reduced to 8 bytes whilst maintaining
full backwards compatibility.
This saves 2KB in size of struct ir_raw_event_ctrl (as element
kfifo is reduced by 512 * 4 bytes) and it allows to copy the
full struct ir_raw_event with a single 64 bit operation.

Successfully tested with the Nuvoton driver and successfully
compile-tested with the ene_ir driver (as it uses the carrier /
duty_cycle elements).

Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
This commit is contained in:
Heiner Kallweit 2016-03-17 16:39:13 -03:00 committed by Mauro Carvalho Chehab
parent 1869384387
commit 5f61ff8611
1 changed files with 4 additions and 14 deletions
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18
include/media/rc-core.h
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@ -215,12 +215,9 @@ enum raw_event_type {
struct ir_raw_event {
union {
u32 duration;
struct {
u32 carrier;
u8 duty_cycle;
};
u32 carrier;
};
u8 duty_cycle;
unsigned pulse:1;
unsigned reset:1;
@ -228,13 +225,7 @@ struct ir_raw_event {
unsigned carrier_report:1;
};
#define DEFINE_IR_RAW_EVENT(event) \
struct ir_raw_event event = { \
{ .duration = 0 } , \
.pulse = 0, \
.reset = 0, \
.timeout = 0, \
.carrier_report = 0 }
#define DEFINE_IR_RAW_EVENT(event) struct ir_raw_event event = {}
static inline void init_ir_raw_event(struct ir_raw_event *ev)
{
@ -256,8 +247,7 @@ void ir_raw_event_set_idle(struct rc_dev *dev, bool idle);
static inline void ir_raw_event_reset(struct rc_dev *dev)
{
DEFINE_IR_RAW_EVENT(ev);
ev.reset = true;
struct ir_raw_event ev = { .reset = true };
ir_raw_event_store(dev, &ev);
ir_raw_event_handle(dev);