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[media] cec: integrate CEC notifier support 

Support the CEC notifier framework, simplifying drivers that
depend on this.

Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Tested-by: Marek Szyprowski <m.szyprowski@samsung.com>
Tested-by: Benjamin Gaignard <benjamin.gaignard@linaro.org>
Acked-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
This commit is contained in:
Hans Verkuil 2016-12-13 12:15:57 -02:00 committed by Mauro Carvalho Chehab
parent 6917a7b774
commit e3a93adcc4
2 changed files with 32 additions and 0 deletions
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22
drivers/media/cec/cec-core.c
View File

@ -195,6 +195,24 @@ static void cec_devnode_unregister(struct cec_devnode *devnode)
put_device(&devnode->dev);
}
#ifdef CONFIG_MEDIA_CEC_NOTIFIER
static void cec_cec_notify(struct cec_adapter *adap, u16 pa)
{
cec_s_phys_addr(adap, pa, false);
}
void cec_register_cec_notifier(struct cec_adapter *adap,
struct cec_notifier *notifier)
{
if (WARN_ON(!adap->devnode.registered))
return;
adap->notifier = notifier;
cec_notifier_register(adap->notifier, adap, cec_cec_notify);
}
EXPORT_SYMBOL_GPL(cec_register_cec_notifier);
#endif
struct cec_adapter *cec_allocate_adapter(const struct cec_adap_ops *ops,
void *priv, const char *name, u32 caps,
u8 available_las)
@ -343,6 +361,10 @@ void cec_unregister_adapter(struct cec_adapter *adap)
adap->rc = NULL;
#endif
debugfs_remove_recursive(adap->cec_dir);
#ifdef CONFIG_MEDIA_CEC_NOTIFIER
if (adap->notifier)
cec_notifier_unregister(adap->notifier);
#endif
cec_devnode_unregister(&adap->devnode);
}
EXPORT_SYMBOL_GPL(cec_unregister_adapter);

10
include/media/cec.h
View File

@ -30,6 +30,7 @@
#include <linux/cec-funcs.h>
#include <media/rc-core.h>
#include <media/cec-edid.h>
#include <media/cec-notifier.h>
/**
* struct cec_devnode - cec device node
@ -173,6 +174,10 @@ struct cec_adapter {
bool passthrough;
struct cec_log_addrs log_addrs;
#ifdef CONFIG_MEDIA_CEC_NOTIFIER
struct cec_notifier *notifier;
#endif
struct dentry *cec_dir;
struct dentry *status_file;
@ -218,6 +223,11 @@ void cec_transmit_done(struct cec_adapter *adap, u8 status, u8 arb_lost_cnt,
u8 nack_cnt, u8 low_drive_cnt, u8 error_cnt);
void cec_received_msg(struct cec_adapter *adap, struct cec_msg *msg);
#ifdef CONFIG_MEDIA_CEC_NOTIFIER
void cec_register_cec_notifier(struct cec_adapter *adap,
struct cec_notifier *notifier);
#endif
#else
static inline int cec_register_adapter(struct cec_adapter *adap,