Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932099AbaBVAus (ORCPT ); Fri, 21 Feb 2014 19:50:48 -0500 Received: from qmta06.emeryville.ca.mail.comcast.net ([76.96.30.56]:52517 "EHLO qmta06.emeryville.ca.mail.comcast.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754517AbaBVAup (ORCPT ); Fri, 21 Feb 2014 19:50:45 -0500 From: Shuah Khan To: m.chehab@samsung.com Cc: Shuah Khan , linux-media@vger.kernel.org, linux-kernel@vger.kernel.org, shuahkhan@gmail.com Subject: [RFC] [PATCH 2/6] media: em28xx-audio - implement em28xx_ops: suspend/resume hooks Date: Fri, 21 Feb 2014 17:50:14 -0700 Message-Id: <38a429856e5ef8a93a4e2b29066f3f36cceeec8a.1393027856.git.shuah.kh@samsung.com> X-Mailer: git-send-email 1.8.3.2 In-Reply-To: References: In-Reply-To: References: Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Implement em28xx_ops: suspend/resume hooks. em28xx usb driver will invoke em28xx_ops: suspend and resume hooks for all its extensions from its suspend() and resume() interfaces. Signed-off-by: Shuah Khan --- drivers/media/usb/em28xx/em28xx-audio.c | 30 ++++++++++++++++++++++++++++++ 1 file changed, 30 insertions(+) diff --git a/drivers/media/usb/em28xx/em28xx-audio.c b/drivers/media/usb/em28xx/em28xx-audio.c index 05e9bd1..a4d159d 100644 --- a/drivers/media/usb/em28xx/em28xx-audio.c +++ b/drivers/media/usb/em28xx/em28xx-audio.c @@ -989,11 +989,41 @@ static int em28xx_audio_fini(struct em28xx *dev) return 0; } +static int em28xx_audio_suspend(struct em28xx *dev) +{ + if (dev == NULL) + return 0; + + if (!dev->has_alsa_audio) + return 0; + + em28xx_info("Suspending audio extension"); + em28xx_deinit_isoc_audio(dev); + atomic_set(&dev->stream_started, 0); + return 0; +} + +static int em28xx_audio_resume(struct em28xx *dev) +{ + if (dev == NULL) + return 0; + + if (!dev->has_alsa_audio) + return 0; + + em28xx_info("Resuming audio extension"); + /* Nothing to do other than schedule_work() ?? */ + schedule_work(&dev->wq_trigger); + return 0; +} + static struct em28xx_ops audio_ops = { .id = EM28XX_AUDIO, .name = "Em28xx Audio Extension", .init = em28xx_audio_init, .fini = em28xx_audio_fini, + .suspend = em28xx_audio_suspend, + .resume = em28xx_audio_resume, }; static int __init em28xx_alsa_register(void) -- 1.8.3.2 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/