From patchwork Thu Jul 14 22:09:49 2011 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jarod Wilson X-Patchwork-Id: 976712 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by demeter2.kernel.org (8.14.4/8.14.4) with ESMTP id p6EMAMK5007024 for ; Thu, 14 Jul 2011 22:10:22 GMT Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932307Ab1GNWKE (ORCPT ); Thu, 14 Jul 2011 18:10:04 -0400 Received: from mx1.redhat.com ([209.132.183.28]:34983 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932187Ab1GNWKB (ORCPT ); Thu, 14 Jul 2011 18:10:01 -0400 Received: from int-mx01.intmail.prod.int.phx2.redhat.com (int-mx01.intmail.prod.int.phx2.redhat.com [10.5.11.11]) by mx1.redhat.com (8.14.4/8.14.4) with ESMTP id p6EMA1tm010322 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=OK) for ; Thu, 14 Jul 2011 18:10:01 -0400 Received: from xavier.bos.redhat.com (xavier.bos.redhat.com [10.16.16.50]) by int-mx01.intmail.prod.int.phx2.redhat.com (8.13.8/8.13.8) with ESMTP id p6EM9u6J011180; Thu, 14 Jul 2011 18:10:00 -0400 From: Jarod Wilson To: linux-media@vger.kernel.org Cc: Jarod Wilson Subject: [PATCH 4/9] [media] mceusb: issue device resume cmd when needed Date: Thu, 14 Jul 2011 18:09:49 -0400 Message-Id: <1310681394-3530-5-git-send-email-jarod@redhat.com> In-Reply-To: <1310681394-3530-1-git-send-email-jarod@redhat.com> References: <1310681394-3530-1-git-send-email-jarod@redhat.com> X-Scanned-By: MIMEDefang 2.67 on 10.5.11.11 Sender: linux-media-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-media@vger.kernel.org X-Greylist: IP, sender and recipient auto-whitelisted, not delayed by milter-greylist-4.2.6 (demeter2.kernel.org [140.211.167.43]); Thu, 14 Jul 2011 22:10:22 +0000 (UTC) According to MS docs, the device firmware may halt after receiving an unknown instruction, but that it should be possible to tell the firmware to continue running by simply sending a device resume command. So lets do that. Signed-off-by: Jarod Wilson --- drivers/media/rc/mceusb.c | 13 +++++++++++++ 1 files changed, 13 insertions(+), 0 deletions(-) diff --git a/drivers/media/rc/mceusb.c b/drivers/media/rc/mceusb.c index 7ff755f..a777623 100644 --- a/drivers/media/rc/mceusb.c +++ b/drivers/media/rc/mceusb.c @@ -437,6 +437,8 @@ struct mceusb_dev { char name[128]; char phys[64]; enum mceusb_model_type model; + + bool need_reset; /* flag to issue a device resume cmd */ }; /* MCE Device Command Strings, generally a port and command pair */ @@ -736,6 +738,14 @@ static void mce_request_packet(struct mceusb_dev *ir, unsigned char *data, static void mce_async_out(struct mceusb_dev *ir, unsigned char *data, int size) { + int rsize = sizeof(DEVICE_RESUME); + + if (ir->need_reset) { + ir->need_reset = false; + mce_request_packet(ir, DEVICE_RESUME, rsize, MCEUSB_TX); + mdelay(10); + } + mce_request_packet(ir, data, size, MCEUSB_TX); mdelay(10); } @@ -912,6 +922,9 @@ static void mceusb_handle_command(struct mceusb_dev *ir, int index) case MCE_RSP_EQIRRXPORTEN: ir->learning_enabled = ((hi & 0x02) == 0x02); break; + case MCE_RSP_CMD_ILLEGAL: + ir->need_reset = true; + break; default: break; }