[PATCH v6 02/51] drm/connector: Add helper to get a connector type name

[Daniel Vetter]

On Sun, Feb 16, 2020 at 11:02:19PM +0200, Laurent Pinchart wrote:
> drm_connector.c contains a map of connector types (DRM_MODE_CONNECTOR_*)
> to name strings, but doesn't expose it. This leads to drivers having to
> store a similar map.

Maybe also a todo if there's many of these?
-Daniel

> 
> Add a new drm_get_connector_type_name() helper function that return a
> name string for a connector type.
> 
> Signed-off-by: Laurent Pinchart <laurent.pinchart at ideasonboard.com>
> Reviewed-by: Boris Brezillon <boris.brezillon at collabora.com>
> Reviewed-by: Sam Ravnborg <sam at ravnborg.org>
> ---
>  drivers/gpu/drm/drm_connector.c | 15 +++++++++++++++
>  include/drm/drm_connector.h     |  1 +
>  2 files changed, 16 insertions(+)
> 
> diff --git a/drivers/gpu/drm/drm_connector.c b/drivers/gpu/drm/drm_connector.c
> index f632ca05960e..644f0ad10671 100644
> --- a/drivers/gpu/drm/drm_connector.c
> +++ b/drivers/gpu/drm/drm_connector.c
> @@ -111,6 +111,21 @@ void drm_connector_ida_destroy(void)
>  		ida_destroy(&drm_connector_enum_list[i].ida);
>  }
>  
> +/**
> + * drm_get_connector_type_name - return a string for connector type
> + * @type: The connector type (DRM_MODE_CONNECTOR_*)
> + *
> + * Returns: the name of the connector type, or NULL if the type is not valid.
> + */
> +const char *drm_get_connector_type_name(unsigned int type)
> +{
> +	if (type < ARRAY_SIZE(drm_connector_enum_list))
> +		return drm_connector_enum_list[type].name;
> +
> +	return NULL;
> +}
> +EXPORT_SYMBOL(drm_get_connector_type_name);
> +
>  /**
>   * drm_connector_get_cmdline_mode - reads the user's cmdline mode
>   * @connector: connector to quwery
> diff --git a/include/drm/drm_connector.h b/include/drm/drm_connector.h
> index b3815371c271..c3bd5262db9c 100644
> --- a/include/drm/drm_connector.h
> +++ b/include/drm/drm_connector.h
> @@ -1518,6 +1518,7 @@ drm_connector_is_unregistered(struct drm_connector *connector)
>  		DRM_CONNECTOR_UNREGISTERED;
>  }
>  
> +const char *drm_get_connector_type_name(unsigned int connector_type);
>  const char *drm_get_connector_status_name(enum drm_connector_status status);
>  const char *drm_get_subpixel_order_name(enum subpixel_order order);
>  const char *drm_get_dpms_name(int val);
> -- 
> Regards,
> 
> Laurent Pinchart
> 
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> dri-devel at lists.freedesktop.org
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-- 
Daniel Vetter
Software Engineer, Intel Corporation
http://blog.ffwll.ch