From patchwork Wed Oct 31 09:28:08 2012 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Steffen Trumtrar X-Patchwork-Id: 1677301 Return-Path: X-Original-To: patchwork-dri-devel@patchwork.kernel.org Delivered-To: patchwork-process-083081@patchwork2.kernel.org Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) by patchwork2.kernel.org (Postfix) with ESMTP id 13BFFDF2F6 for ; Wed, 31 Oct 2012 09:36:43 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id DA18DA0AC2 for ; Wed, 31 Oct 2012 02:36:42 -0700 (PDT) X-Original-To: dri-devel@lists.freedesktop.org Delivered-To: dri-devel@lists.freedesktop.org Received: from metis.ext.pengutronix.de (metis.ext.pengutronix.de [92.198.50.35]) by gabe.freedesktop.org (Postfix) with ESMTP id 0FB519F373 for ; Wed, 31 Oct 2012 02:29:15 -0700 (PDT) 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 1TTUbm-000453-JG; Wed, 31 Oct 2012 10:29:10 +0100 Received: from str by dude.hi.pengutronix.de with local (Exim 4.80) (envelope-from ) id 1TTUbm-0000df-GY; Wed, 31 Oct 2012 10:29:10 +0100 From: Steffen Trumtrar To: devicetree-discuss@lists.ozlabs.org Subject: [PATCH v7 8/8] drm_modes: add of_videomode helpers Date: Wed, 31 Oct 2012 10:28:08 +0100 Message-Id: <1351675689-26814-9-git-send-email-s.trumtrar@pengutronix.de> X-Mailer: git-send-email 1.7.10.4 In-Reply-To: <1351675689-26814-1-git-send-email-s.trumtrar@pengutronix.de> References: <1351675689-26814-1-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: dri-devel@lists.freedesktop.org Cc: linux-fbdev@vger.kernel.org, Stephen Warren , dri-devel@lists.freedesktop.org, Tomi Valkeinen , Rob Herring , Laurent Pinchart , kernel@pengutronix.de, Steffen Trumtrar , Guennady Liakhovetski , linux-media@vger.kernel.org X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.13 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , MIME-Version: 1.0 Sender: dri-devel-bounces+patchwork-dri-devel=patchwork.kernel.org@lists.freedesktop.org Errors-To: dri-devel-bounces+patchwork-dri-devel=patchwork.kernel.org@lists.freedesktop.org Add helper to get drm_display_mode from devicetree. Signed-off-by: Steffen Trumtrar --- drivers/gpu/drm/drm_modes.c | 42 ++++++++++++++++++++++++++++++++++++++++++ include/drm/drmP.h | 5 +++++ 2 files changed, 47 insertions(+) diff --git a/drivers/gpu/drm/drm_modes.c b/drivers/gpu/drm/drm_modes.c index 049624d..d51afe6 100644 --- a/drivers/gpu/drm/drm_modes.c +++ b/drivers/gpu/drm/drm_modes.c @@ -35,6 +35,7 @@ #include #include #include +#include #include /** @@ -540,6 +541,47 @@ int videomode_to_display_mode(struct videomode *vm, struct drm_display_mode *dmo EXPORT_SYMBOL_GPL(videomode_to_display_mode); #endif +#if IS_ENABLED(CONFIG_OF_VIDEOMODE) +static void dump_drm_displaymode(struct drm_display_mode *m) +{ + pr_debug("drm_displaymode = %d %d %d %d %d %d %d %d %d\n", + m->hdisplay, m->hsync_start, m->hsync_end, m->htotal, + m->vdisplay, m->vsync_start, m->vsync_end, m->vtotal, + m->clock); +} + +/** + * 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 + * + * DESCRIPTION: + * 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_timing_list ond + * work with that instead. + */ +int of_get_drm_display_mode(struct device_node *np, struct drm_display_mode *dmode, + int index) +{ + struct videomode vm; + int ret; + + ret = of_get_videomode(np, &vm, index); + if (ret) + return ret; + + videomode_to_display_mode(&vm, dmode); + + pr_info("%s: got %dx%d display mode from %s\n", __func__, vm.hactive, + vm.vactive, np->name); + dump_drm_displaymode(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 e9fa1e3..4f9c44e 100644 --- a/include/drm/drmP.h +++ b/include/drm/drmP.h @@ -56,6 +56,7 @@ #include #include #include +#include #include #if defined(__alpha__) || defined(__powerpc__) #include /* For pte_wrprotect */ @@ -1457,6 +1458,10 @@ drm_mode_create_from_cmdline_mode(struct drm_device *dev, extern int videomode_to_display_mode(struct videomode *vm, struct drm_display_mode *dmode); +extern int of_get_drm_display_mode(struct device_node *np, + struct drm_display_mode *dmode, + int index); + /* Modesetting support */ extern void drm_vblank_pre_modeset(struct drm_device *dev, int crtc); extern void drm_vblank_post_modeset(struct drm_device *dev, int crtc);