From patchwork Mon Jun 25 11:07:32 2012 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Manjunath Hadli X-Patchwork-Id: 1130141 Return-Path: X-Original-To: patchwork-davinci@patchwork.kernel.org Delivered-To: patchwork-davinci@patchwork.kernel.org Received: from comal.ext.ti.com (comal.ext.ti.com [198.47.26.152]) by patchwork2.kernel.org (Postfix) with ESMTP id CA985DFFEA for ; Thu, 28 Jun 2012 23:27:28 +0000 (UTC) Received: from dlelxv30.itg.ti.com ([172.17.2.17]) by comal.ext.ti.com (8.13.7/8.13.7) with ESMTP id q5PBD6Bn017218; Mon, 25 Jun 2012 06:13:06 -0500 Received: from DFLE70.ent.ti.com (dfle70.ent.ti.com [128.247.5.40]) by dlelxv30.itg.ti.com (8.13.8/8.13.8) with ESMTP id q5PBD6no031079; Mon, 25 Jun 2012 06:13:06 -0500 Received: from dlelxv23.itg.ti.com (172.17.1.198) by dfle70.ent.ti.com (128.247.5.40) with Microsoft SMTP Server id 14.1.323.3; Mon, 25 Jun 2012 06:13:05 -0500 Received: from linux.omap.com (dlelxs01.itg.ti.com [157.170.227.31]) by dlelxv23.itg.ti.com (8.13.8/8.13.8) with ESMTP id q5PBD5St000796; Mon, 25 Jun 2012 06:13:05 -0500 Received: from linux.omap.com (localhost [127.0.0.1]) by linux.omap.com (Postfix) with ESMTP id 422BF80631; Mon, 25 Jun 2012 06:13:05 -0500 (CDT) X-Original-To: davinci-linux-open-source@linux.davincidsp.com Delivered-To: davinci-linux-open-source@linux.davincidsp.com Received: from dbdp20.itg.ti.com (dbdp20.itg.ti.com [172.24.170.38]) by linux.omap.com (Postfix) with ESMTP id C774080626 for ; Mon, 25 Jun 2012 06:08:18 -0500 (CDT) Received: from DBDE70.ent.ti.com (localhost [127.0.0.1]) by dbdp20.itg.ti.com (8.13.8/8.13.8) with ESMTP id q5PB8HqE025275; Mon, 25 Jun 2012 16:38:17 +0530 (IST) Received: from dbdp33.itg.ti.com (172.24.170.252) by dbde70.ent.ti.com (172.24.170.148) with Microsoft SMTP Server id 14.1.323.3; Mon, 25 Jun 2012 16:38:17 +0530 Received: from psplinux051 (smtpvbd.itg.ti.com [172.24.170.250]) by dbdp33.itg.ti.com (8.13.8/8.13.8) with ESMTP id q5PB8HxH012162; Mon, 25 Jun 2012 16:38:17 +0530 Received: from x0144960 by psplinux051 with local (Exim 4.74) (envelope-from ) id 1Sj79V-0002k8-9H; Mon, 25 Jun 2012 16:38:17 +0530 From: Manjunath Hadli To: LMML Subject: [PATCH v3 10/13] davinci: vpif capture:Add power management support Date: Mon, 25 Jun 2012 16:37:32 +0530 Message-ID: <1340622455-10419-11-git-send-email-manjunath.hadli@ti.com> X-Mailer: git-send-email 1.7.4.1 In-Reply-To: <1340622455-10419-1-git-send-email-manjunath.hadli@ti.com> References: <1340622455-10419-1-git-send-email-manjunath.hadli@ti.com> MIME-Version: 1.0 CC: dlos X-BeenThere: davinci-linux-open-source@linux.davincidsp.com X-Mailman-Version: 2.1.12 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: Errors-To: davinci-linux-open-source-bounces@linux.davincidsp.com Implement power management operations - suspend and resume as part of dev_pm_ops for VPIF capture driver. Signed-off-by: Manjunath Hadli Signed-off-by: Lad, Prabhakar --- drivers/media/video/davinci/vpif_capture.c | 77 +++++++++++++++++++++++---- 1 files changed, 65 insertions(+), 12 deletions(-) diff --git a/drivers/media/video/davinci/vpif_capture.c b/drivers/media/video/davinci/vpif_capture.c index 097e136..f1ee137 100644 --- a/drivers/media/video/davinci/vpif_capture.c +++ b/drivers/media/video/davinci/vpif_capture.c @@ -2300,26 +2300,74 @@ static int vpif_remove(struct platform_device *device) return 0; } +#ifdef CONFIG_PM /** * vpif_suspend: vpif device suspend - * - * TODO: Add suspend code here */ -static int -vpif_suspend(struct device *dev) +static int vpif_suspend(struct device *dev) { - return -1; + + struct common_obj *common; + struct channel_obj *ch; + int i; + + for (i = 0; i < VPIF_CAPTURE_MAX_DEVICES; i++) { + /* Get the pointer to the channel object */ + ch = vpif_obj.dev[i]; + common = &ch->common[VPIF_VIDEO_INDEX]; + if (mutex_lock_interruptible(&common->lock)) + return -ERESTARTSYS; + + if (ch->usrs && common->io_usrs) { + /* Disable channel */ + if (ch->channel_id == VPIF_CHANNEL0_VIDEO) { + enable_channel0(0); + channel0_intr_enable(0); + } + if (ch->channel_id == VPIF_CHANNEL1_VIDEO || + common->started == 2) { + enable_channel1(0); + channel1_intr_enable(0); + } + } + mutex_unlock(&common->lock); + } + + return 0; } -/** +/* * vpif_resume: vpif device suspend - * - * TODO: Add resume code here */ -static int -vpif_resume(struct device *dev) +static int vpif_resume(struct device *dev) { - return -1; + struct common_obj *common; + struct channel_obj *ch; + int i; + + for (i = 0; i < VPIF_CAPTURE_MAX_DEVICES; i++) { + /* Get the pointer to the channel object */ + ch = vpif_obj.dev[i]; + common = &ch->common[VPIF_VIDEO_INDEX]; + if (mutex_lock_interruptible(&common->lock)) + return -ERESTARTSYS; + + if (ch->usrs && common->io_usrs) { + /* Disable channel */ + if (ch->channel_id == VPIF_CHANNEL0_VIDEO) { + enable_channel0(1); + channel0_intr_enable(1); + } + if (ch->channel_id == VPIF_CHANNEL1_VIDEO || + common->started == 2) { + enable_channel1(1); + channel1_intr_enable(1); + } + } + mutex_unlock(&common->lock); + } + + return 0; } static const struct dev_pm_ops vpif_dev_pm_ops = { @@ -2327,11 +2375,16 @@ static const struct dev_pm_ops vpif_dev_pm_ops = { .resume = vpif_resume, }; +#define vpif_pm_ops (&vpif_dev_pm_ops) +#else +#define vpif_pm_ops NULL +#endif + static __refdata struct platform_driver vpif_driver = { .driver = { .name = "vpif_capture", .owner = THIS_MODULE, - .pm = &vpif_dev_pm_ops, + .pm = vpif_pm_ops, }, .probe = vpif_probe, .remove = vpif_remove,