From patchwork Fri May 22 10:12:45 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Pratyush Yadav X-Patchwork-Id: 11565179 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 94C7113B1 for ; Fri, 22 May 2020 10:13:48 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 7F33E2067B for ; Fri, 22 May 2020 10:13:48 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=ti.com header.i=@ti.com header.b="wbMBdYoZ" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728716AbgEVKNs (ORCPT ); Fri, 22 May 2020 06:13:48 -0400 Received: from fllv0016.ext.ti.com ([198.47.19.142]:59800 "EHLO fllv0016.ext.ti.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728592AbgEVKNr (ORCPT ); Fri, 22 May 2020 06:13:47 -0400 Received: from fllv0034.itg.ti.com ([10.64.40.246]) by fllv0016.ext.ti.com (8.15.2/8.15.2) with ESMTP id 04MADS9b037933; Fri, 22 May 2020 05:13:28 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=ti.com; s=ti-com-17Q1; t=1590142408; bh=b9DtW6d5P+gAUcIciHVQpoA5TMdqp4wWmcYARHLpJ0E=; h=From:To:CC:Subject:Date:In-Reply-To:References; b=wbMBdYoZS2KhqlYH9bzoNY5H9NplPsUaCBi+W4hVQIF/MI3DBwN1zgoEQmebNZ1Qk esfRZnJRuoWR62EvA5o9HGsydmk3slqsrPeLrgcMN7KiNBmi7Rs7xZAO8MOs2Wgqzi bTKs/TqmEisQTie+v2B7UYSqflTrrDmYphU0Wxrs= Received: from DFLE115.ent.ti.com (dfle115.ent.ti.com [10.64.6.36]) by fllv0034.itg.ti.com (8.15.2/8.15.2) with ESMTPS id 04MADSKR032568 (version=TLSv1.2 cipher=AES256-GCM-SHA384 bits=256 verify=FAIL); Fri, 22 May 2020 05:13:28 -0500 Received: from DFLE111.ent.ti.com (10.64.6.32) by DFLE115.ent.ti.com (10.64.6.36) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256_P256) id 15.1.1979.3; Fri, 22 May 2020 05:13:28 -0500 Received: from fllv0040.itg.ti.com (10.64.41.20) by DFLE111.ent.ti.com (10.64.6.32) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256_P256) id 15.1.1979.3 via Frontend Transport; Fri, 22 May 2020 05:13:28 -0500 Received: from pratyush-OptiPlex-790.dhcp.ti.com (ileax41-snat.itg.ti.com [10.172.224.153]) by fllv0040.itg.ti.com (8.15.2/8.15.2) with ESMTP id 04MAD1a5041179; Fri, 22 May 2020 05:13:23 -0500 From: Pratyush Yadav To: Tudor Ambarus , Miquel Raynal , Richard Weinberger , Vignesh Raghavendra , Mark Brown , Nicolas Ferre , Alexandre Belloni , Ludovic Desroches , Matthias Brugger , , , , , CC: Pratyush Yadav , Sekhar Nori , Boris Brezillon , Mason Yang Subject: [PATCH v7 04/20] spi: spi-mtk-nor: reject DTR ops Date: Fri, 22 May 2020 15:42:45 +0530 Message-ID: <20200522101301.26909-5-p.yadav@ti.com> X-Mailer: git-send-email 2.25.0 In-Reply-To: <20200522101301.26909-1-p.yadav@ti.com> References: <20200522101301.26909-1-p.yadav@ti.com> MIME-Version: 1.0 X-EXCLAIMER-MD-CONFIG: e1e8a2fd-e40a-4ac6-ac9b-f7e9cc9ee180 Sender: linux-spi-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-spi@vger.kernel.org Double Transfer Rate (DTR) ops are added in spi-mem. But this controller doesn't support DTR transactions. Since we don't use the default supports_op(), which rejects all DTR ops, do that explicitly in our supports_op(). Signed-off-by: Pratyush Yadav --- drivers/spi/spi-mtk-nor.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/drivers/spi/spi-mtk-nor.c b/drivers/spi/spi-mtk-nor.c index 7bc302b50396..d715cf6372fe 100644 --- a/drivers/spi/spi-mtk-nor.c +++ b/drivers/spi/spi-mtk-nor.c @@ -211,6 +211,12 @@ static bool mtk_nor_supports_op(struct spi_mem *mem, if (op->cmd.buswidth != 1) return false; + /* DTR ops not supported. */ + if (op->cmd.dtr || op->addr.dtr || op->dummy.dtr || op->data.dtr) + return false; + if (op->cmd.nbytes != 1) + return false; + if ((op->addr.nbytes == 3) || (op->addr.nbytes == 4)) { if ((op->data.dir == SPI_MEM_DATA_IN) && mtk_nor_match_read(op)) return true;