From patchwork Wed Jul 18 13:54:00 2012 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Laurent Pinchart X-Patchwork-Id: 1211131 Return-Path: X-Original-To: patchwork-linux-media@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 CEF5740075 for ; Wed, 18 Jul 2012 13:54:24 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754617Ab2GRNyW (ORCPT ); Wed, 18 Jul 2012 09:54:22 -0400 Received: from perceval.ideasonboard.com ([95.142.166.194]:52875 "EHLO perceval.ideasonboard.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754576Ab2GRNyE (ORCPT ); Wed, 18 Jul 2012 09:54:04 -0400 Received: from avalon.ideasonboard.com (unknown [91.178.171.146]) by perceval.ideasonboard.com (Postfix) with ESMTPSA id 28E6535A8B; Wed, 18 Jul 2012 15:54:01 +0200 (CEST) From: Laurent Pinchart To: Guennadi Liakhovetski Cc: linux-media@vger.kernel.org Subject: [PATCH v3 5/9] tw9910: Don't access the device in the g_mbus_fmt operation Date: Wed, 18 Jul 2012 15:54:00 +0200 Message-Id: <1342619644-5712-6-git-send-email-laurent.pinchart@ideasonboard.com> X-Mailer: git-send-email 1.7.8.6 In-Reply-To: <1342619644-5712-1-git-send-email-laurent.pinchart@ideasonboard.com> References: <1342619644-5712-1-git-send-email-laurent.pinchart@ideasonboard.com> Sender: linux-media-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-media@vger.kernel.org The g_mbus_fmt operation only needs to return the current mbus frame format and doesn't need to configure the hardware to do so. Fix it to avoid requiring the chip to be powered on when calling the operation. Signed-off-by: Laurent Pinchart --- drivers/media/video/tw9910.c | 8 +++----- 1 files changed, 3 insertions(+), 5 deletions(-) diff --git a/drivers/media/video/tw9910.c b/drivers/media/video/tw9910.c index 8768efb..9f53eac 100644 --- a/drivers/media/video/tw9910.c +++ b/drivers/media/video/tw9910.c @@ -699,11 +699,9 @@ static int tw9910_g_fmt(struct v4l2_subdev *sd, struct tw9910_priv *priv = to_tw9910(client); if (!priv->scale) { - int ret; - u32 width = 640, height = 480; - ret = tw9910_set_frame(sd, &width, &height); - if (ret < 0) - return ret; + priv->scale = tw9910_select_norm(priv->norm, 640, 480); + if (!priv->scale) + return -EINVAL; } mf->width = priv->scale->width;