From patchwork Wed Oct 31 09:28:04 2012 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Steffen Trumtrar X-Patchwork-Id: 1676971 Return-Path: X-Original-To: patchwork-linux-fbdev@patchwork.kernel.org Delivered-To: patchwork-process-083081@patchwork2.kernel.org Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by patchwork2.kernel.org (Postfix) with ESMTP id 1CF2CDF2F6 for ; Wed, 31 Oct 2012 09:29:17 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S935207Ab2JaJ3O (ORCPT ); Wed, 31 Oct 2012 05:29:14 -0400 Received: from metis.ext.pengutronix.de ([92.198.50.35]:39257 "EHLO metis.ext.pengutronix.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932755Ab2JaJ3L (ORCPT ); Wed, 31 Oct 2012 05:29:11 -0400 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 1TTUbg-00040j-IV; Wed, 31 Oct 2012 10:29:04 +0100 Received: from str by dude.hi.pengutronix.de with local (Exim 4.80) (envelope-from ) id 1TTUbg-0000d8-Fj; Wed, 31 Oct 2012 10:29:04 +0100 From: Steffen Trumtrar To: devicetree-discuss@lists.ozlabs.org Cc: Steffen Trumtrar , "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 Subject: [PATCH v7 4/8] video: add videomode helpers Date: Wed, 31 Oct 2012 10:28:04 +0100 Message-Id: <1351675689-26814-5-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: 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 functions to convert from display timings to a generic videomode structure. This videomode can then be converted to the corresponding subsystem mode representation (e.g. fb_videomode). Signed-off-by: Steffen Trumtrar --- drivers/video/Kconfig | 6 ++++++ drivers/video/Makefile | 1 + drivers/video/videomode.c | 44 ++++++++++++++++++++++++++++++++++++++++++++ include/linux/videomode.h | 36 ++++++++++++++++++++++++++++++++++++ 4 files changed, 87 insertions(+) create mode 100644 drivers/video/videomode.c create mode 100644 include/linux/videomode.h diff --git a/drivers/video/Kconfig b/drivers/video/Kconfig index 1421fc8..45dd393 100644 --- a/drivers/video/Kconfig +++ b/drivers/video/Kconfig @@ -38,6 +38,12 @@ config DISPLAY_TIMING help Say Y here, to use the display timing helpers. +config VIDEOMODE + bool "Enable videomode helpers" + help + Say Y here, to use the generic videomode helpers. This allows + converting from display timings to fb_videomode and drm_display_mode + menuconfig FB tristate "Support for frame buffer devices" ---help--- diff --git a/drivers/video/Makefile b/drivers/video/Makefile index 552c045..fc30439 100644 --- a/drivers/video/Makefile +++ b/drivers/video/Makefile @@ -168,3 +168,4 @@ obj-$(CONFIG_FB_VIRTUAL) += vfb.o #video output switch sysfs driver obj-$(CONFIG_VIDEO_OUTPUT_CONTROL) += output.o obj-$(CONFIG_DISPLAY_TIMING) += display_timing.o +obj-$(CONFIG_VIDEOMODE) += videomode.o diff --git a/drivers/video/videomode.c b/drivers/video/videomode.c new file mode 100644 index 0000000..a9fe010 --- /dev/null +++ b/drivers/video/videomode.c @@ -0,0 +1,44 @@ +/* + * generic display timing functions + * + * Copyright (c) 2012 Steffen Trumtrar , Pengutronix + * + * This file is released under the GPLv2 + */ + +#include +#include +#include +#include +#include + +int videomode_from_timing(struct display_timings *disp, struct videomode *vm, + int index) +{ + struct display_timing *dt = NULL; + + dt = display_timings_get(disp, index); + if (!dt) { + pr_err("%s: no signal timings found\n", __func__); + return -EINVAL; + } + + vm->pixelclock = display_timing_get_value(&dt->pixelclock, 0); + vm->hactive = display_timing_get_value(&dt->hactive, 0); + vm->hfront_porch = display_timing_get_value(&dt->hfront_porch, 0); + vm->hback_porch = display_timing_get_value(&dt->hback_porch, 0); + vm->hsync_len = display_timing_get_value(&dt->hsync_len, 0); + + vm->vactive = display_timing_get_value(&dt->vactive, 0); + vm->vfront_porch = display_timing_get_value(&dt->vfront_porch, 0); + vm->vback_porch = display_timing_get_value(&dt->vback_porch, 0); + vm->vsync_len = display_timing_get_value(&dt->vsync_len, 0); + + vm->vah = dt->vsync_pol_active; + vm->hah = dt->hsync_pol_active; + vm->interlaced = dt->interlaced; + vm->doublescan = dt->doublescan; + + return 0; +} +EXPORT_SYMBOL_GPL(videomode_from_timing); diff --git a/include/linux/videomode.h b/include/linux/videomode.h new file mode 100644 index 0000000..f932147 --- /dev/null +++ b/include/linux/videomode.h @@ -0,0 +1,36 @@ +/* + * Copyright 2012 Steffen Trumtrar + * + * generic videomode description + * + * This file is released under the GPLv2 + */ + +#ifndef __LINUX_VIDEOMODE_H +#define __LINUX_VIDEOMODE_H + +#include + +struct videomode { + u32 pixelclock; + u32 refreshrate; + + u32 hactive; + u32 hfront_porch; + u32 hback_porch; + u32 hsync_len; + + u32 vactive; + u32 vfront_porch; + u32 vback_porch; + u32 vsync_len; + + u32 hah; + u32 vah; + bool interlaced; + bool doublescan; +}; + +int videomode_from_timing(struct display_timings *disp, struct videomode *vm, + int index); +#endif