From patchwork Fri Aug 17 02:03:41 2012 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Antti Palosaari X-Patchwork-Id: 1336091 Return-Path: X-Original-To: patchwork-linux-media@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 11DF6DFB34 for ; Fri, 17 Aug 2012 02:05:09 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932472Ab2HQCFD (ORCPT ); Thu, 16 Aug 2012 22:05:03 -0400 Received: from mail.kapsi.fi ([217.30.184.167]:44285 "EHLO mail.kapsi.fi" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932403Ab2HQCFA (ORCPT ); Thu, 16 Aug 2012 22:05:00 -0400 Received: from dyn3-82-128-186-179.psoas.suomi.net ([82.128.186.179] helo=localhost.localdomain) by mail.kapsi.fi with esmtpsa (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.72) (envelope-from ) id 1T2Bvn-0000t3-Eu; Fri, 17 Aug 2012 05:04:59 +0300 From: Antti Palosaari To: linux-media@vger.kernel.org Cc: Hin-Tak Leung , Antti Palosaari Subject: [PATCH 3/4] dvb_frontend: add routine for DVB-C annex A parameter validation Date: Fri, 17 Aug 2012 05:03:41 +0300 Message-Id: <1345169022-10221-4-git-send-email-crope@iki.fi> X-Mailer: git-send-email 1.7.11.2 In-Reply-To: <1345169022-10221-1-git-send-email-crope@iki.fi> References: <1345169022-10221-1-git-send-email-crope@iki.fi> X-SA-Exim-Connect-IP: 82.128.186.179 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 Common routine for use of dvb-core, demodulator and tuner for check given DVB-C annex A parameters correctness. Signed-off-by: Antti Palosaari --- drivers/media/dvb-core/dvb_frontend.c | 54 +++++++++++++++++++++++++++++++++++ drivers/media/dvb-core/dvb_frontend.h | 1 + 2 files changed, 55 insertions(+) diff --git a/drivers/media/dvb-core/dvb_frontend.c b/drivers/media/dvb-core/dvb_frontend.c index 6413c74..6a19c87 100644 --- a/drivers/media/dvb-core/dvb_frontend.c +++ b/drivers/media/dvb-core/dvb_frontend.c @@ -2759,6 +2759,60 @@ int dvb_validate_params_dvbt2(struct dvb_frontend *fe) } EXPORT_SYMBOL(dvb_validate_params_dvbt2); +int dvb_validate_params_dvbc_annex_a(struct dvb_frontend *fe) +{ + struct dtv_frontend_properties *c = &fe->dtv_property_cache; + + dev_dbg(fe->dvb->device, "%s:\n", __func__); + + switch (c->delivery_system) { + case SYS_DVBC_ANNEX_A: + break; + default: + dev_dbg(fe->dvb->device, "%s: delivery_system=%d\n", __func__, + c->delivery_system); + return -EINVAL; + } + + /* + * TODO: NorDig Unified 2.2 specifies input frequency range + * 110 - 862 MHz. Do not limit it now as w_scan seems to start from + * 73 MHz until reason is clear. + */ + if (c->frequency >= 0 && c->frequency <= 862000000) { + ; + } else { + dev_dbg(fe->dvb->device, "%s: frequency=%d\n", __func__, + c->frequency); + return -EINVAL; + } + + if (c->symbol_rate >= 1000000 && c->symbol_rate <= 7000000) { + ; + } else { + dev_dbg(fe->dvb->device, "%s: symbol_rate=%d\n", __func__, + c->symbol_rate); + return -EINVAL; + } + + switch (c->modulation) { + case QAM_AUTO: + case QAM_16: + case QAM_32: + case QAM_64: + case QAM_128: + case QAM_256: + break; + default: + dev_dbg(fe->dvb->device, "%s: modulation=%d\n", __func__, + c->modulation); + return -EINVAL; + } + + return 0; +} +EXPORT_SYMBOL(dvb_validate_params_dvbc_annex_a); + int dvb_register_frontend(struct dvb_adapter* dvb, struct dvb_frontend* fe) { diff --git a/drivers/media/dvb-core/dvb_frontend.h b/drivers/media/dvb-core/dvb_frontend.h index bcd572d..e6e6fe1 100644 --- a/drivers/media/dvb-core/dvb_frontend.h +++ b/drivers/media/dvb-core/dvb_frontend.h @@ -427,5 +427,6 @@ extern s32 timeval_usec_diff(struct timeval lasttime, struct timeval curtime); extern int dvb_validate_params_dvbt(struct dvb_frontend *fe); extern int dvb_validate_params_dvbt2(struct dvb_frontend *fe); +extern int dvb_validate_params_dvbc_annex_a(struct dvb_frontend *fe); #endif