[PATCH v2 02/50] drm/connector: Add helper to get a connector type name

[Boris Brezillon]

On Tue, 20 Aug 2019 04:16:33 +0300
Laurent Pinchart <laurent.pinchart at ideasonboard.com> 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.
> 
> 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>

> ---
>  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 4c766624b20d..3f93633a9ff2 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 681cb590f952..b91e369cfb11 100644
> --- a/include/drm/drm_connector.h
> +++ b/include/drm/drm_connector.h
> @@ -1500,6 +1500,7 @@ 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);