From d25654b3fad9906ca80912701fd4bd6e2419f54d Mon Sep 17 00:00:00 2001 From: Thomas Zimmermann Date: Mon, 5 Sep 2022 16:16:45 +0200 Subject: drm/probe-helper: Add drm_connector_helper_get_modes_fixed() Add drm_connector_helper_get_modes_fixed(), which duplicates a single display mode for a connector. Convert drivers. v2: * rename 'static' and 'hw' to 'fixed' everywhere * fix typo 'there' to 'their' (Sam) Signed-off-by: Thomas Zimmermann Reviewed-by: Sam Ravnborg Link: https://patchwork.freedesktop.org/patch/msgid/20220905141648.22013-2-tzimmermann@suse.de --- drivers/gpu/drm/drm_probe_helper.c | 40 ++++++++++++++++++++++++++++++++++++++ 1 file changed, 40 insertions(+) (limited to 'drivers/gpu/drm/drm_probe_helper.c') diff --git a/drivers/gpu/drm/drm_probe_helper.c b/drivers/gpu/drm/drm_probe_helper.c index bb427c5a4f1f..818150a1b3b0 100644 --- a/drivers/gpu/drm/drm_probe_helper.c +++ b/drivers/gpu/drm/drm_probe_helper.c @@ -1050,6 +1050,46 @@ int drm_connector_helper_get_modes_from_ddc(struct drm_connector *connector) } EXPORT_SYMBOL(drm_connector_helper_get_modes_from_ddc); +/** + * drm_connector_helper_get_modes_fixed - Duplicates a display mode for a connector + * @connector: the connector + * @fixed_mode: the display hardware's mode + * + * This function duplicates a display modes for a connector. Drivers for hardware + * that only supports a single fixed mode can use this function in their connector's + * get_modes helper. + * + * Returns: + * The number of created modes. + */ +int drm_connector_helper_get_modes_fixed(struct drm_connector *connector, + const struct drm_display_mode *fixed_mode) +{ + struct drm_device *dev = connector->dev; + struct drm_display_mode *mode; + + mode = drm_mode_duplicate(dev, fixed_mode); + if (!mode) { + drm_err(dev, "Failed to duplicate mode " DRM_MODE_FMT "\n", + DRM_MODE_ARG(fixed_mode)); + return 0; + } + + if (mode->name[0] == '\0') + drm_mode_set_name(mode); + + mode->type |= DRM_MODE_TYPE_PREFERRED; + drm_mode_probed_add(connector, mode); + + if (mode->width_mm) + connector->display_info.width_mm = mode->width_mm; + if (mode->height_mm) + connector->display_info.height_mm = mode->height_mm; + + return 1; +} +EXPORT_SYMBOL(drm_connector_helper_get_modes_fixed); + /** * drm_connector_helper_get_modes - Read EDID and update connector. * @connector: The connector -- cgit v1.2.3-59-g8ed1b