From patchwork Mon May 24 11:08:46 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Tomi Valkeinen X-Patchwork-Id: 447645 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-18.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID, DKIM_VALID_AU, HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_CR_TRAILER, INCLUDES_PATCH, MAILING_LIST_MULTI, SPF_HELO_NONE, SPF_PASS, USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 722C2C47085 for ; Mon, 24 May 2021 11:09:39 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 56DA6611CE for ; Mon, 24 May 2021 11:09:39 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232714AbhEXLLG (ORCPT ); Mon, 24 May 2021 07:11:06 -0400 Received: from perceval.ideasonboard.com ([213.167.242.64]:33754 "EHLO perceval.ideasonboard.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232685AbhEXLK5 (ORCPT ); Mon, 24 May 2021 07:10:57 -0400 Received: from deskari.lan (91-157-208-71.elisa-laajakaista.fi [91.157.208.71]) by perceval.ideasonboard.com (Postfix) with ESMTPSA id 5BB2D140C; Mon, 24 May 2021 13:09:24 +0200 (CEST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=ideasonboard.com; s=mail; t=1621854564; bh=HqrhDruHAh04ay7WEMWsGhq+NT2/TcOOjBaQ2rD61zA=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=XQrBmasr7nAZKXFk/U4IGZdSpKDyXrRa0MOBs59YcCPl2ubYc3BFO3+bM2/SOBPIy ig3SbIoNxkRG61ykXVscsIHbeLIxnswCXCWdedn6l2oZLZt8K1sCXTk6yW7ddrVWD8 SgT7afM3QrVlvXaDrIjMC8ss5ycAn1byPc0nL7gg= From: Tomi Valkeinen To: Laurent Pinchart , Pratyush Yadav , Lokesh Vutla , linux-media@vger.kernel.org Cc: Tomi Valkeinen Subject: [PATCH v3 15/38] media: ti-vpe: cal: remove wait when stopping camerarx Date: Mon, 24 May 2021 14:08:46 +0300 Message-Id: <20210524110909.672432-16-tomi.valkeinen@ideasonboard.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20210524110909.672432-1-tomi.valkeinen@ideasonboard.com> References: <20210524110909.672432-1-tomi.valkeinen@ideasonboard.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-media@vger.kernel.org Asserting ComplexIO reset seems to affect the HW (ie. asserting reset will break an active capture), but the RESET_DONE bit never changes to "reset is ongoing" state. Thus we always get a timeout. Drop the wait, as it seems to achieve nothing. Signed-off-by: Tomi Valkeinen Reviewed-by: Laurent Pinchart --- drivers/media/platform/ti-vpe/cal-camerarx.c | 15 ++------------- 1 file changed, 2 insertions(+), 13 deletions(-) diff --git a/drivers/media/platform/ti-vpe/cal-camerarx.c b/drivers/media/platform/ti-vpe/cal-camerarx.c index b36e55b63718..a8cca30f3f51 100644 --- a/drivers/media/platform/ti-vpe/cal-camerarx.c +++ b/drivers/media/platform/ti-vpe/cal-camerarx.c @@ -407,7 +407,6 @@ static int cal_camerarx_start(struct cal_camerarx *phy) static void cal_camerarx_stop(struct cal_camerarx *phy) { - unsigned int i; int ret; cal_camerarx_ppi_disable(phy); @@ -421,19 +420,9 @@ static void cal_camerarx_stop(struct cal_camerarx *phy) CAL_CSI2_COMPLEXIO_CFG_RESET_CTRL, CAL_CSI2_COMPLEXIO_CFG_RESET_CTRL_MASK); - /* Wait for power down completion */ - for (i = 0; i < 10; i++) { - if (cal_read_field(phy->cal, - CAL_CSI2_COMPLEXIO_CFG(phy->instance), - CAL_CSI2_COMPLEXIO_CFG_RESET_DONE_MASK) == - CAL_CSI2_COMPLEXIO_CFG_RESET_DONE_RESETONGOING) - break; - usleep_range(1000, 1100); - } - phy_dbg(3, phy, "CAL_CSI2_COMPLEXIO_CFG(%d) = 0x%08x Complex IO in Reset (%d) %s\n", + phy_dbg(3, phy, "CAL_CSI2_COMPLEXIO_CFG(%d) = 0x%08x Complex IO in Reset\n", phy->instance, - cal_read(phy->cal, CAL_CSI2_COMPLEXIO_CFG(phy->instance)), i, - (i >= 10) ? "(timeout)" : ""); + cal_read(phy->cal, CAL_CSI2_COMPLEXIO_CFG(phy->instance))); /* Disable the phy */ cal_camerarx_disable(phy);