From patchwork Mon Feb 10 16:17:02 2014 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Antti Palosaari X-Patchwork-Id: 3620311 Return-Path: X-Original-To: patchwork-linux-media@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork2.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.19.201]) by patchwork2.web.kernel.org (Postfix) with ESMTP id DDF2FBF418 for ; Mon, 10 Feb 2014 16:17:35 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id A9313201D3 for ; Mon, 10 Feb 2014 16:17:34 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 7F4FE201B6 for ; Mon, 10 Feb 2014 16:17:33 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752739AbaBJQRa (ORCPT ); Mon, 10 Feb 2014 11:17:30 -0500 Received: from mail.kapsi.fi ([217.30.184.167]:34737 "EHLO mail.kapsi.fi" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752410AbaBJQRT (ORCPT ); Mon, 10 Feb 2014 11:17:19 -0500 Received: from [82.128.187.60] (helo=localhost.localdomain) by mail.kapsi.fi with esmtpsa (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.72) (envelope-from ) id 1WCtXq-0007qe-JK; Mon, 10 Feb 2014 18:17:18 +0200 From: Antti Palosaari To: linux-media@vger.kernel.org Cc: Hans Verkuil , Antti Palosaari Subject: [REVIEW PATCH 2/6] v4l: add RF tuner channel bandwidth control Date: Mon, 10 Feb 2014 18:17:02 +0200 Message-Id: <1392049026-13398-3-git-send-email-crope@iki.fi> X-Mailer: git-send-email 1.8.5.3 In-Reply-To: <1392049026-13398-1-git-send-email-crope@iki.fi> References: <1392049026-13398-1-git-send-email-crope@iki.fi> X-SA-Exim-Connect-IP: 82.128.187.60 X-SA-Exim-Mail-From: crope@iki.fi X-SA-Exim-Scanned: No (on mail.kapsi.fi); SAEximRunCond expanded to false Sender: linux-media-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-media@vger.kernel.org X-Spam-Status: No, score=-7.5 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_HI, RP_MATCHES_RCVD, UNPARSEABLE_RELAY autolearn=ham version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP Modern silicon RF tuners has one or more adjustable filters on signal path, in order to filter noise from desired radio channel. Add channel bandwidth control to tell the driver which is radio channel width we want receive. Filters could be then adjusted by the driver or hardware, using RF frequency and channel bandwidth as a base of filter calculations. On automatic mode (normal mode), bandwidth is calculated from sampling rate or tuning info got from userspace. That new control gives possibility to set manual mode and let user have more control for filters. Cc: Hans Verkuil Signed-off-by: Antti Palosaari --- drivers/media/v4l2-core/v4l2-ctrls.c | 4 ++++ include/uapi/linux/v4l2-controls.h | 2 ++ 2 files changed, 6 insertions(+) diff --git a/drivers/media/v4l2-core/v4l2-ctrls.c b/drivers/media/v4l2-core/v4l2-ctrls.c index d201f61..e44722b 100644 --- a/drivers/media/v4l2-core/v4l2-ctrls.c +++ b/drivers/media/v4l2-core/v4l2-ctrls.c @@ -865,6 +865,8 @@ const char *v4l2_ctrl_get_name(u32 id) case V4L2_CID_MIXER_GAIN: return "Mixer Gain"; case V4L2_CID_IF_GAIN_AUTO: return "IF Gain, Auto"; case V4L2_CID_IF_GAIN: return "IF Gain"; + case V4L2_CID_BANDWIDTH_AUTO: return "Channel Bandwidth, Auto"; + case V4L2_CID_BANDWIDTH: return "Channel Bandwidth"; default: return NULL; } @@ -917,6 +919,7 @@ void v4l2_ctrl_fill(u32 id, const char **name, enum v4l2_ctrl_type *type, case V4L2_CID_LNA_GAIN_AUTO: case V4L2_CID_MIXER_GAIN_AUTO: case V4L2_CID_IF_GAIN_AUTO: + case V4L2_CID_BANDWIDTH_AUTO: *type = V4L2_CTRL_TYPE_BOOLEAN; *min = 0; *max = *step = 1; @@ -1078,6 +1081,7 @@ void v4l2_ctrl_fill(u32 id, const char **name, enum v4l2_ctrl_type *type, case V4L2_CID_LNA_GAIN: case V4L2_CID_MIXER_GAIN: case V4L2_CID_IF_GAIN: + case V4L2_CID_BANDWIDTH: *flags |= V4L2_CTRL_FLAG_SLIDER; break; case V4L2_CID_PAN_RELATIVE: diff --git a/include/uapi/linux/v4l2-controls.h b/include/uapi/linux/v4l2-controls.h index 076fa34..3cf68a6 100644 --- a/include/uapi/linux/v4l2-controls.h +++ b/include/uapi/linux/v4l2-controls.h @@ -905,5 +905,7 @@ enum v4l2_deemphasis { #define V4L2_CID_MIXER_GAIN (V4L2_CID_RF_TUNER_CLASS_BASE + 4) #define V4L2_CID_IF_GAIN_AUTO (V4L2_CID_RF_TUNER_CLASS_BASE + 5) #define V4L2_CID_IF_GAIN (V4L2_CID_RF_TUNER_CLASS_BASE + 6) +#define V4L2_CID_BANDWIDTH_AUTO (V4L2_CID_RF_TUNER_CLASS_BASE + 7) +#define V4L2_CID_BANDWIDTH (V4L2_CID_RF_TUNER_CLASS_BASE + 8) #endif