From patchwork Thu Nov 22 16:00:15 2012 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Steffen Trumtrar X-Patchwork-Id: 1791221 Return-Path: X-Original-To: patchwork-linux-fbdev@patchwork.kernel.org Delivered-To: patchwork-process-083081@patchwork1.kernel.org Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by patchwork1.kernel.org (Postfix) with ESMTP id A720A3FD1A for ; Thu, 22 Nov 2012 22:11:57 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1757822Ab2KVWLV (ORCPT ); Thu, 22 Nov 2012 17:11:21 -0500 Received: from metis.ext.pengutronix.de ([92.198.50.35]:56938 "EHLO metis.ext.pengutronix.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754624Ab2KVSkE (ORCPT ); Thu, 22 Nov 2012 13:40:04 -0500 Received: from dude.hi.pengutronix.de ([2001:6f8:1178:2:21e:67ff:fe11:9c5c]) by metis.ext.pengutronix.de with esmtp (Exim 4.72) (envelope-from ) id 1TbZCf-0006Lh-AM; Thu, 22 Nov 2012 17:00:37 +0100 Received: from str by dude.hi.pengutronix.de with local (Exim 4.80) (envelope-from ) id 1TbZCb-0002OF-9u; Thu, 22 Nov 2012 17:00:33 +0100 From: Steffen Trumtrar To: devicetree-discuss@lists.ozlabs.org Cc: "Rob Herring" , linux-fbdev@vger.kernel.org, dri-devel@lists.freedesktop.org, "Laurent Pinchart" , "Thierry Reding" , "Guennady Liakhovetski" , linux-media@vger.kernel.org, "Tomi Valkeinen" , "Stephen Warren" , kernel@pengutronix.de, "Florian Tobias Schandinat" , "David Airlie" Subject: [PATCHv13 7/7] drm_modes: add of_videomode helpers Date: Thu, 22 Nov 2012 17:00:15 +0100 Message-Id: <1353600015-6974-8-git-send-email-s.trumtrar@pengutronix.de> X-Mailer: git-send-email 1.7.10.4 In-Reply-To: <1353600015-6974-1-git-send-email-s.trumtrar@pengutronix.de> References: <1353600015-6974-1-git-send-email-s.trumtrar@pengutronix.de> X-SA-Exim-Connect-IP: 2001:6f8:1178:2:21e:67ff:fe11:9c5c X-SA-Exim-Mail-From: str@pengutronix.de X-SA-Exim-Scanned: No (on metis.ext.pengutronix.de); SAEximRunCond expanded to false X-PTX-Original-Recipient: linux-fbdev@vger.kernel.org Sender: linux-fbdev-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-fbdev@vger.kernel.org Add helper to get drm_display_mode from devicetree. Signed-off-by: Steffen Trumtrar Reviewed-by: Thierry Reding Acked-by: Thierry Reding Tested-by: Thierry Reding Tested-by: Philipp Zabel Reviewed-by: Laurent Pinchart Acked-by: Laurent Pinchart --- drivers/gpu/drm/drm_modes.c | 34 +++++++++++++++++++++++++++++++++- include/drm/drmP.h | 6 ++++++ 2 files changed, 39 insertions(+), 1 deletion(-) diff --git a/drivers/gpu/drm/drm_modes.c b/drivers/gpu/drm/drm_modes.c index 0073b27..2d6edfa 100644 --- a/drivers/gpu/drm/drm_modes.c +++ b/drivers/gpu/drm/drm_modes.c @@ -35,7 +35,7 @@ #include #include #include -#include +#include /** * drm_mode_debug_printmodeline - debug print a mode @@ -541,6 +541,38 @@ int drm_display_mode_from_videomode(const struct videomode *vm, EXPORT_SYMBOL_GPL(drm_display_mode_from_videomode); #endif +#if IS_ENABLED(CONFIG_OF_VIDEOMODE) +/** + * of_get_drm_display_mode - get a drm_display_mode from devicetree + * @np: device_node with the timing specification + * @dmode: will be set to the return value + * @index: index into the list of display timings in devicetree + * + * This function is expensive and should only be used, if only one mode is to be + * read from DT. To get multiple modes start with of_get_display_timings and + * work with that instead. + */ +int of_get_drm_display_mode(struct device_node *np, + struct drm_display_mode *dmode, unsigned int index) +{ + struct videomode vm; + int ret; + + ret = of_get_videomode(np, &vm, index); + if (ret) + return ret; + + drm_display_mode_from_videomode(&vm, dmode); + + pr_info("%s: got %dx%d display mode from %s\n", __func__, vm.hactive, + vm.vactive, np->name); + drm_mode_debug_printmodeline(dmode); + + return 0; +} +EXPORT_SYMBOL_GPL(of_get_drm_display_mode); +#endif + /** * drm_mode_set_name - set the name on a mode * @mode: name will be set in this mode diff --git a/include/drm/drmP.h b/include/drm/drmP.h index 3d0ccaa..84ecabd 100644 --- a/include/drm/drmP.h +++ b/include/drm/drmP.h @@ -86,6 +86,7 @@ struct drm_file; struct drm_device; struct videomode; +struct device_node; #include #include #include @@ -1459,6 +1460,11 @@ drm_mode_create_from_cmdline_mode(struct drm_device *dev, extern int drm_display_mode_from_videomode(const struct videomode *vm, struct drm_display_mode *dmode); #endif +#if IS_ENABLED(CONFIG_OF_VIDEOMODE) +extern int of_get_drm_display_mode(struct device_node *np, + struct drm_display_mode *dmode, + unsigned int index); +#endif /* Modesetting support */ extern void drm_vblank_pre_modeset(struct drm_device *dev, int crtc);