Add a helper to get the EDID property for sysfs property show. This
hides all the edid_blob_ptr usage within drm_edid.c.
Signed-off-by: Jani Nikula <jani.nikula@xxxxxxxxx>
---
drivers/gpu/drm/drm_crtc_internal.h | 2 ++
drivers/gpu/drm/drm_edid.c | 33 +++++++++++++++++++++++++++++
drivers/gpu/drm/drm_sysfs.c | 24 ++-------------------
3 files changed, 37 insertions(+), 22 deletions(-)
diff --git a/drivers/gpu/drm/drm_crtc_internal.h b/drivers/gpu/drm/drm_crtc_internal.h
index 25aaae937ceb..20e9d7b206a2 100644
--- a/drivers/gpu/drm/drm_crtc_internal.h
+++ b/drivers/gpu/drm/drm_crtc_internal.h
@@ -303,6 +303,8 @@ const u8 *drm_edid_find_extension(const struct drm_edid *drm_edid,
int ext_id, int *ext_index);
void drm_edid_cta_sad_get(const struct cea_sad *cta_sad, u8 *sad);
void drm_edid_cta_sad_set(struct cea_sad *cta_sad, const u8 *sad);
+ssize_t drm_edid_connector_property_show(struct drm_connector *connector,
+ char *buf, loff_t off, size_t count);
/* drm_edid_load.c */
#ifdef CONFIG_DRM_LOAD_EDID_FIRMWARE
diff --git a/drivers/gpu/drm/drm_edid.c b/drivers/gpu/drm/drm_edid.c
index 4f54c91b31b2..97362dd2330b 100644
--- a/drivers/gpu/drm/drm_edid.c
+++ b/drivers/gpu/drm/drm_edid.c
@@ -6969,6 +6969,39 @@ static int _drm_edid_connector_property_update(struct drm_connector *connector,
return ret;
}
+/* For sysfs edid show implementation */
+ssize_t drm_edid_connector_property_show(struct drm_connector *connector,
+ char *buf, loff_t off, size_t count)
+{
+ const void *edid;
+ size_t size;
+ ssize_t ret = 0;
+
+ mutex_lock(&connector->dev->mode_config.mutex);
+
+ if (!connector->edid_blob_ptr)
+ goto unlock;
+
+ edid = connector->edid_blob_ptr->data;
+ size = connector->edid_blob_ptr->length;
+ if (!edid)
+ goto unlock;
+
+ if (off >= size)
+ goto unlock;
+
+ if (off + count > size)
+ count = size - off;
+
+ memcpy(buf, edid + off, count);
+
+ ret = count;
+unlock:
+ mutex_unlock(&connector->dev->mode_config.mutex);
+
+ return ret;
+}
+
/**
* drm_edid_connector_update - Update connector information from EDID
* @connector: Connector
diff --git a/drivers/gpu/drm/drm_sysfs.c b/drivers/gpu/drm/drm_sysfs.c
index bd9b8ab4f82b..fb3bbb6adcd1 100644
--- a/drivers/gpu/drm/drm_sysfs.c
+++ b/drivers/gpu/drm/drm_sysfs.c
@@ -266,29 +266,9 @@ static ssize_t edid_show(struct file *filp, struct kobject *kobj,
{
struct device *connector_dev = kobj_to_dev(kobj);
struct drm_connector *connector = to_drm_connector(connector_dev);
- unsigned char *edid;
- size_t size;
- ssize_t ret = 0;
+ ssize_t ret;
- mutex_lock(&connector->dev->mode_config.mutex);
- if (!connector->edid_blob_ptr)
- goto unlock;
-
- edid = connector->edid_blob_ptr->data;
- size = connector->edid_blob_ptr->length;
- if (!edid)
- goto unlock;
-
- if (off >= size)
- goto unlock;
-
- if (off + count > size)
- count = size - off;
- memcpy(buf, edid + off, count);
-
- ret = count;
-unlock:
- mutex_unlock(&connector->dev->mode_config.mutex);
+ ret = drm_edid_connector_property_show(connector, buf, off, count);
return ret;
}
--
2.39.2
