From patchwork Sun Mar 15 22:57:51 2015 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Benjamin Larsson X-Patchwork-Id: 6014211 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 [198.145.29.136]) by patchwork2.web.kernel.org (Postfix) with ESMTP id 2A140BF90F for ; Sun, 15 Mar 2015 22:58:23 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 5CE5620303 for ; Sun, 15 Mar 2015 22:58:22 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 549E0202E6 for ; Sun, 15 Mar 2015 22:58:21 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752445AbbCOW6T (ORCPT ); Sun, 15 Mar 2015 18:58:19 -0400 Received: from smtp.bredband2.com ([83.219.192.166]:56491 "EHLO smtp.bredband2.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752084AbbCOW6G (ORCPT ); Sun, 15 Mar 2015 18:58:06 -0400 Received: from localhost.localdomain (92-244-23-216.customers.ownit.se [92.244.23.216]) (Authenticated sender: ed8153) by smtp.bredband2.com (Postfix) with ESMTPA id 06D8A11F636; Sun, 15 Mar 2015 23:57:56 +0100 (CET) From: Benjamin Larsson To: crope@iki.fi, mchehab@osg.samsung.com Cc: Linux Media Mailing List Subject: [PATCH 06/10] mn88472: implement firmware parity check Date: Sun, 15 Mar 2015 23:57:51 +0100 Message-Id: <1426460275-3766-6-git-send-email-benjamin@southpole.se> X-Mailer: git-send-email 2.1.0 In-Reply-To: <1426460275-3766-1-git-send-email-benjamin@southpole.se> References: <1426460275-3766-1-git-send-email-benjamin@southpole.se> Sender: linux-media-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-media@vger.kernel.org X-Spam-Status: No, score=-6.9 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_HI, T_RP_MATCHES_RCVD, UNPARSEABLE_RELAY autolearn=unavailable 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 Signed-off-by: Benjamin Larsson Reviewed-by: Antti Palosaari Signed-off-by: Antti Palosaari --- drivers/staging/media/mn88472/mn88472.c | 15 +++++++++++++++ 1 file changed, 15 insertions(+) diff --git a/drivers/staging/media/mn88472/mn88472.c b/drivers/staging/media/mn88472/mn88472.c index 5070c37..4a00a4d 100644 --- a/drivers/staging/media/mn88472/mn88472.c +++ b/drivers/staging/media/mn88472/mn88472.c @@ -258,6 +258,7 @@ static int mn88472_init(struct dvb_frontend *fe) int ret, len, remaining; const struct firmware *fw = NULL; u8 *fw_file = MN88472_FIRMWARE; + unsigned int csum; dev_dbg(&client->dev, "\n"); @@ -303,6 +304,20 @@ static int mn88472_init(struct dvb_frontend *fe) } } + /* parity check of firmware */ + ret = regmap_read(dev->regmap[0], 0xf8, &csum); + if (ret) { + dev_err(&client->dev, + "parity reg read failed=%d\n", ret); + goto err; + } + if (csum & 0x10) { + dev_err(&client->dev, + "firmware parity check failed=0x%x\n", csum); + goto err; + } + dev_err(&client->dev, "firmware parity check succeeded=0x%x\n", csum); + ret = regmap_write(dev->regmap[0], 0xf5, 0x00); if (ret) goto err;