From patchwork Wed Mar 25 12:14:53 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Tomi Valkeinen X-Patchwork-Id: 11457613 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 2CD151668 for ; Wed, 25 Mar 2020 12:15:58 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 0D0CA207FC for ; Wed, 25 Mar 2020 12:15:58 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=ti.com header.i=@ti.com header.b="CPyoaLq6" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727407AbgCYMP5 (ORCPT ); Wed, 25 Mar 2020 08:15:57 -0400 Received: from fllv0016.ext.ti.com ([198.47.19.142]:60924 "EHLO fllv0016.ext.ti.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727286AbgCYMP5 (ORCPT ); Wed, 25 Mar 2020 08:15:57 -0400 Received: from fllv0035.itg.ti.com ([10.64.41.0]) by fllv0016.ext.ti.com (8.15.2/8.15.2) with ESMTP id 02PCFsuh012925; Wed, 25 Mar 2020 07:15:54 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=ti.com; s=ti-com-17Q1; t=1585138554; bh=lhjymImtcxDm3rrUfirnOqRd7jyctB19OtqGzZ8XPAM=; h=From:To:CC:Subject:Date:In-Reply-To:References; b=CPyoaLq6eWt1nzhTsaykYKShsv+fLcG1mqhVmz6241xiKNYvib2MsAcMkkG7jD5pP xbmoOvqSUSAb8w0ipAo0+hIY64dTOitZ0o1knzltFNUhDOVT21mndZtGZWrT+e+dme qbcAvu6hKEzZZvfVHAKkDfcwBl4J+Fu4VMhJ3NNc= Received: from DLEE113.ent.ti.com (dlee113.ent.ti.com [157.170.170.24]) by fllv0035.itg.ti.com (8.15.2/8.15.2) with ESMTP id 02PCFstO003119; Wed, 25 Mar 2020 07:15:54 -0500 Received: from DLEE106.ent.ti.com (157.170.170.36) by DLEE113.ent.ti.com (157.170.170.24) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256_P256) id 15.1.1847.3; Wed, 25 Mar 2020 07:15:54 -0500 Received: from lelv0327.itg.ti.com (10.180.67.183) by DLEE106.ent.ti.com (157.170.170.36) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256_P256) id 15.1.1847.3 via Frontend Transport; Wed, 25 Mar 2020 07:15:54 -0500 Received: from deskari.ti.com (ileax41-snat.itg.ti.com [10.172.224.153]) by lelv0327.itg.ti.com (8.15.2/8.15.2) with ESMTP id 02PCFm51085323; Wed, 25 Mar 2020 07:15:52 -0500 From: Tomi Valkeinen To: , Benoit Parrot , Laurent Pinchart , Hans Verkuil CC: Mauro Carvalho Chehab , Tomi Valkeinen Subject: [PATCH v3 02/19] media: ti-vpe: cal: improve enable_irqs Date: Wed, 25 Mar 2020 14:14:53 +0200 Message-ID: <20200325121510.25923-3-tomi.valkeinen@ti.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20200325121510.25923-1-tomi.valkeinen@ti.com> References: <20200325121510.25923-1-tomi.valkeinen@ti.com> MIME-Version: 1.0 X-EXCLAIMER-MD-CONFIG: e1e8a2fd-e40a-4ac6-ac9b-f7e9cc9ee180 Sender: linux-media-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-media@vger.kernel.org IRQENABLE_SET registers are (usually) not meant to be read, only written to. The current driver needlessly uses read-modify-write cycle to enable IRQ bits. The read-modify-write has no bad side effects here, but it's still better to clean this up by only using write. Signed-off-by: Tomi Valkeinen Tested-by: Tomi Valkeinen Reviewed-by: Benoit Parrot --- drivers/media/platform/ti-vpe/cal.c | 16 ++++++++-------- 1 file changed, 8 insertions(+), 8 deletions(-) diff --git a/drivers/media/platform/ti-vpe/cal.c b/drivers/media/platform/ti-vpe/cal.c index 9dd6de14189b..76d55c76d938 100644 --- a/drivers/media/platform/ti-vpe/cal.c +++ b/drivers/media/platform/ti-vpe/cal.c @@ -706,16 +706,16 @@ static void cal_quickdump_regs(struct cal_dev *dev) */ static void enable_irqs(struct cal_ctx *ctx) { + u32 val; + /* Enable IRQ_WDMA_END 0/1 */ - reg_write_field(ctx->dev, - CAL_HL_IRQENABLE_SET(2), - CAL_HL_IRQ_ENABLE, - CAL_HL_IRQ_MASK(ctx->csi2_port)); + val = 0; + set_field(&val, CAL_HL_IRQ_ENABLE, CAL_HL_IRQ_MASK(ctx->csi2_port)); + reg_write(ctx->dev, CAL_HL_IRQENABLE_SET(2), val); /* Enable IRQ_WDMA_START 0/1 */ - reg_write_field(ctx->dev, - CAL_HL_IRQENABLE_SET(3), - CAL_HL_IRQ_ENABLE, - CAL_HL_IRQ_MASK(ctx->csi2_port)); + val = 0; + set_field(&val, CAL_HL_IRQ_ENABLE, CAL_HL_IRQ_MASK(ctx->csi2_port)); + reg_write(ctx->dev, CAL_HL_IRQENABLE_SET(3), val); /* Todo: Add VC_IRQ and CSI2_COMPLEXIO_IRQ handling */ reg_write(ctx->dev, CAL_CSI2_VC_IRQENABLE(1), 0xFF000000); }