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media: cec: add struct cec_connector_info support 

Define struct cec_connector_info in media/cec.h and define
CEC_CAP_CONNECTOR_INFO. In a later patch this will be moved to
uapi/linux/cec.h.

The CEC_CAP_CONNECTOR_INFO capability can be set by drivers, but
cec_allocate_adapter() will remove it again until the public API
for this can be enabled once all drm drivers wire this up correctly.

Also add the cec_fill_conn_info_from_drm and cec_s_conn_info functions,
which are needed by drm drivers to fill in the cec_connector info
based on a drm_connector.

The cec_notifier_(un)register and cec_register_cec_notifier
prototypes were moved from cec-notifier.h to cec.h since cec.h no longer
includes cec-notifier.h. These headers included each other before,
which caused various problems.

Due to these changes the seco-cec driver was changed as well: it
should include cec-notifier.h, not cec.h.

Signed-off-by: Dariusz Marcinkiewicz <darekm@google.com>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
This commit is contained in:
Dariusz Marcinkiewicz 2019-06-20 05:17:18 -04:00 committed by Mauro Carvalho Chehab
parent 3d51dc03a4
commit 32a847f9fa
5 changed files with 132 additions and 41 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

29
drivers/media/cec/cec-adap.c
View File

@ -16,7 +16,10 @@
#include <linux/string.h>
#include <linux/types.h>
#include <drm/drm_connector.h>
#include <drm/drm_device.h>
#include <drm/drm_edid.h>
#include <drm/drm_file.h>
#include "cec-priv.h"
@ -75,6 +78,16 @@ u16 cec_get_edid_phys_addr(const u8 *edid, unsigned int size,
}
EXPORT_SYMBOL_GPL(cec_get_edid_phys_addr);
void cec_fill_conn_info_from_drm(struct cec_connector_info *conn_info,
const struct drm_connector *connector)
{
memset(conn_info, 0, sizeof(*conn_info));
conn_info->type = CEC_CONNECTOR_TYPE_DRM;
conn_info->drm.card_no = connector->dev->primary->index;
conn_info->drm.connector_id = connector->base.id;
}
EXPORT_SYMBOL_GPL(cec_fill_conn_info_from_drm);
/*
* Queue a new event for this filehandle. If ts == 0, then set it
* to the current time.
@ -1598,6 +1611,22 @@ void cec_s_phys_addr_from_edid(struct cec_adapter *adap,
}
EXPORT_SYMBOL_GPL(cec_s_phys_addr_from_edid);
void cec_s_conn_info(struct cec_adapter *adap,
const struct cec_connector_info *conn_info)
{
if (!(adap->capabilities & CEC_CAP_CONNECTOR_INFO))
return;
mutex_lock(&adap->lock);
if (conn_info)
adap->conn_info = *conn_info;
else
memset(&adap->conn_info, 0, sizeof(adap->conn_info));
cec_post_state_event(adap);
mutex_unlock(&adap->lock);
}
EXPORT_SYMBOL_GPL(cec_s_conn_info);
/*
* Called from either the ioctl or a driver to set the logical addresses.
*

5
drivers/media/cec/cec-core.c
View File

@ -257,6 +257,11 @@ struct cec_adapter *cec_allocate_adapter(const struct cec_adap_ops *ops,
struct cec_adapter *adap;
int res;
/*
* Disable this capability until the connector info public API
* is ready.
*/
caps &= ~CEC_CAP_CONNECTOR_INFO;
#ifndef CONFIG_MEDIA_CEC_RC
caps &= ~CEC_CAP_RC;
#endif

2
drivers/media/platform/seco-cec/seco-cec.c
View File

@ -18,7 +18,7 @@
#include <linux/platform_device.h>
/* CEC Framework */
#include <media/cec.h>
#include <media/cec-notifier.h>
#include "seco-cec.h"

39
include/media/cec-notifier.h
View File

@ -63,30 +63,6 @@ void cec_notifier_set_phys_addr(struct cec_notifier *n, u16 pa);
void cec_notifier_set_phys_addr_from_edid(struct cec_notifier *n,
const struct edid *edid);
/**
* cec_notifier_register - register a callback with the notifier
* @n: the CEC notifier
* @adap: the CEC adapter, passed as argument to the callback function
* @callback: the callback function
*/
void cec_notifier_register(struct cec_notifier *n,
struct cec_adapter *adap,
void (*callback)(struct cec_adapter *adap, u16 pa));
/**
* cec_notifier_unregister - unregister the callback from the notifier.
* @n: the CEC notifier
*/
void cec_notifier_unregister(struct cec_notifier *n);
/**
* cec_register_cec_notifier - register the notifier with the cec adapter.
* @adap: the CEC adapter
* @notifier: the CEC notifier
*/
void cec_register_cec_notifier(struct cec_adapter *adap,
struct cec_notifier *notifier);
/**
* cec_notifier_parse_hdmi_phandle - find the hdmi device from "hdmi-phandle"
* @dev: the device with the "hdmi-phandle" device tree property
@ -119,21 +95,6 @@ static inline void cec_notifier_set_phys_addr_from_edid(struct cec_notifier *n,
{
}
static inline void cec_notifier_register(struct cec_notifier *n,
struct cec_adapter *adap,
void (*callback)(struct cec_adapter *adap, u16 pa))
{
}
static inline void cec_notifier_unregister(struct cec_notifier *n)
{
}
static inline void cec_register_cec_notifier(struct cec_adapter *adap,
struct cec_notifier *notifier)
{
}
static inline struct device *cec_notifier_parse_hdmi_phandle(struct device *dev)
{
return ERR_PTR(-ENODEV);

98
include/media/cec.h
View File

@ -17,7 +17,9 @@
#include <linux/timer.h>
#include <linux/cec-funcs.h>
#include <media/rc-core.h>
#include <media/cec-notifier.h>
/* CEC_ADAP_G_CONNECTOR_INFO is available */
#define CEC_CAP_CONNECTOR_INFO (1 << 8)
#define CEC_CAP_DEFAULTS (CEC_CAP_LOG_ADDRS | CEC_CAP_TRANSMIT | \
CEC_CAP_PASSTHROUGH | CEC_CAP_RC)
@ -53,6 +55,7 @@ struct cec_devnode {
struct cec_adapter;
struct cec_data;
struct cec_pin;
struct cec_notifier;
struct cec_data {
struct list_head list;
@ -144,6 +147,34 @@ struct cec_adap_ops {
*/
#define CEC_MAX_MSG_TX_QUEUE_SZ (18 * 1)
/**
* struct cec_drm_connector_info - tells which drm connector is
* associated with the CEC adapter.
* @card_no: drm card number
* @connector_id: drm connector ID
*/
struct cec_drm_connector_info {
__u32 card_no;
__u32 connector_id;
};
#define CEC_CONNECTOR_TYPE_NO_CONNECTOR 0
#define CEC_CONNECTOR_TYPE_DRM 1
/**
* struct cec_connector_info - tells if and which connector is
* associated with the CEC adapter.
* @type: connector type (if any)
* @drm: drm connector info
*/
struct cec_connector_info {
__u32 type;
union {
struct cec_drm_connector_info drm;
__u32 raw[16];
};
};
struct cec_adapter {
struct module *owner;
char name[32];
@ -182,6 +213,7 @@ struct cec_adapter {
struct cec_fh *cec_initiator;
bool passthrough;
struct cec_log_addrs log_addrs;
struct cec_connector_info conn_info;
u32 tx_timeouts;
@ -233,6 +265,7 @@ static inline bool cec_is_registered(const struct cec_adapter *adap)
((pa) >> 12), ((pa) >> 8) & 0xf, ((pa) >> 4) & 0xf, (pa) & 0xf
struct edid;
struct drm_connector;
#if IS_REACHABLE(CONFIG_CEC_CORE)
struct cec_adapter *cec_allocate_adapter(const struct cec_adap_ops *ops,
@ -247,6 +280,8 @@ void cec_s_phys_addr(struct cec_adapter *adap, u16 phys_addr,
bool block);
void cec_s_phys_addr_from_edid(struct cec_adapter *adap,
const struct edid *edid);
void cec_s_conn_info(struct cec_adapter *adap,
const struct cec_connector_info *conn_info);
int cec_transmit_msg(struct cec_adapter *adap, struct cec_msg *msg,
bool block);
@ -331,6 +366,9 @@ void cec_queue_pin_5v_event(struct cec_adapter *adap, bool is_high, ktime_t ts);
u16 cec_get_edid_phys_addr(const u8 *edid, unsigned int size,
unsigned int *offset);
void cec_fill_conn_info_from_drm(struct cec_connector_info *conn_info,
const struct drm_connector *connector);
#else
static inline int cec_register_adapter(struct cec_adapter *adap,
@ -365,6 +403,64 @@ static inline u16 cec_get_edid_phys_addr(const u8 *edid, unsigned int size,
return CEC_PHYS_ADDR_INVALID;
}
static inline void cec_s_conn_info(struct cec_adapter *adap,
const struct cec_connector_info *conn_info)
{
}
static inline void
cec_fill_conn_info_from_drm(struct cec_connector_info *conn_info,
const struct drm_connector *connector)
{
memset(conn_info, 0, sizeof(*conn_info));
}
#endif
#if IS_REACHABLE(CONFIG_CEC_CORE) && IS_ENABLED(CONFIG_CEC_NOTIFIER)
/**
* cec_notifier_register - register a callback with the notifier
* @n: the CEC notifier
* @adap: the CEC adapter, passed as argument to the callback function
* @callback: the callback function
*/
void cec_notifier_register(struct cec_notifier *n,
struct cec_adapter *adap,
void (*callback)(struct cec_adapter *adap, u16 pa));
/**
* cec_notifier_unregister - unregister the callback from the notifier.
* @n: the CEC notifier
*/
void cec_notifier_unregister(struct cec_notifier *n);
/**
* cec_register_cec_notifier - register the notifier with the cec adapter.
* @adap: the CEC adapter
* @notifier: the CEC notifier
*/
void cec_register_cec_notifier(struct cec_adapter *adap,
struct cec_notifier *notifier);
#else
static inline void
cec_notifier_register(struct cec_notifier *n,
struct cec_adapter *adap,
void (*callback)(struct cec_adapter *adap, u16 pa))
{
}
static inline void cec_notifier_unregister(struct cec_notifier *n)
{
}
static inline void cec_register_cec_notifier(struct cec_adapter *adap,
struct cec_notifier *notifier)
{
}
#endif
/**