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drm/doc: Document drm_add_modes_noedid() usage 

And fix a spelling mistake.

Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
This commit is contained in:
Laurent Pinchart 2014-12-10 21:11:31 +02:00 committed by Dave Airlie
parent da9df2f410
commit f41c2581bc
1 changed files with 19 additions and 5 deletions
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24
Documentation/DocBook/drm.tmpl
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@ -1947,10 +1947,16 @@ void intel_crt_init(struct drm_device *dev)
and then retrieves a list of modes by calling the connector and then retrieves a list of modes by calling the connector
<methodname>get_modes</methodname> helper operation. <methodname>get_modes</methodname> helper operation.
</para> </para>
<para>
If the helper operation returns no mode, and if the connector status
is connector_status_connected, standard VESA DMT modes up to
1024x768 are automatically added to the modes list by a call to
<function>drm_add_modes_noedid</function>.
</para>
<para> <para>
The function filters out modes larger than The function then filters out modes larger than
<parameter>max_width</parameter> and <parameter>max_height</parameter> <parameter>max_width</parameter> and <parameter>max_height</parameter>
if specified. It then calls the optional connector if specified. It finally calls the optional connector
<methodname>mode_valid</methodname> helper operation for each mode in <methodname>mode_valid</methodname> helper operation for each mode in
the probed list to check whether the mode is valid for the connector. the probed list to check whether the mode is valid for the connector.
</para> </para>
@ -2090,11 +2096,19 @@ void intel_crt_init(struct drm_device *dev)
<synopsis>int (*get_modes)(struct drm_connector *connector);</synopsis> <synopsis>int (*get_modes)(struct drm_connector *connector);</synopsis>
<para> <para>
Fill the connector's <structfield>probed_modes</structfield> list Fill the connector's <structfield>probed_modes</structfield> list
by parsing EDID data with <function>drm_add_edid_modes</function> or by parsing EDID data with <function>drm_add_edid_modes</function>,
calling <function>drm_mode_probed_add</function> directly for every adding standard VESA DMT modes with <function>drm_add_modes_noedid</function>,
or calling <function>drm_mode_probed_add</function> directly for every
supported mode and return the number of modes it has detected. This supported mode and return the number of modes it has detected. This
operation is mandatory. operation is mandatory.
</para> </para>
<para>
Note that the caller function will automatically add standard VESA
DMT modes up to 1024x768 if the <methodname>get_modes</methodname>
helper operation returns no mode and if the connector status is
connector_status_connected. There is no need to call
<function>drm_add_edid_modes</function> manually in that case.
</para>
<para> <para>
When adding modes manually the driver creates each mode with a call to When adding modes manually the driver creates each mode with a call to
<function>drm_mode_create</function> and must fill the following fields. <function>drm_mode_create</function> and must fill the following fields.
@ -2292,7 +2306,7 @@ void intel_crt_init(struct drm_device *dev)
<function>drm_helper_probe_single_connector_modes</function>. <function>drm_helper_probe_single_connector_modes</function>.
</para> </para>
<para> <para>
When parsing EDID data, <function>drm_add_edid_modes</function> fill the When parsing EDID data, <function>drm_add_edid_modes</function> fills the
connector <structfield>display_info</structfield> connector <structfield>display_info</structfield>
<structfield>width_mm</structfield> and <structfield>width_mm</structfield> and
<structfield>height_mm</structfield> fields. When creating modes <structfield>height_mm</structfield> fields. When creating modes