From patchwork Wed Jul 13 04:22:22 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Srikandan, Nandhini" X-Patchwork-Id: 590262 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 69796C43334 for ; Wed, 13 Jul 2022 04:29:29 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S234107AbiGME32 (ORCPT ); Wed, 13 Jul 2022 00:29:28 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:60826 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S234102AbiGME3B (ORCPT ); Wed, 13 Jul 2022 00:29:01 -0400 Received: from mga12.intel.com (mga12.intel.com [192.55.52.136]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id AEC336B26A; Tue, 12 Jul 2022 21:28:54 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1657686534; x=1689222534; h=from:to:cc:subject:date:message-id:in-reply-to: references; bh=l+ZqLrpVFlkrQ2zO4adzOFv+jVRMntH8EJhMK/ZmKL4=; b=XyQ+GGtCRy6K3U/XdN24rto4cBQ4d2lIMHVHicDb9v6kOy6/66xVQEXB T9QF0W9i8h6jSbIILUd7fcXEMVI4y0hOGRMiFQZrhBSWq4XbOg7rqe3P0 J03GboYFB4YFj4/MZnZKUoomolbzsd5nkDTHwbSkEOpSbmMGEgKZ7VtLm 7TUtIHcAvoTGvGgv1O8sxHkEq0rKphLFNfiPVZalMCoKUdC0EYfz5HTTK +GzSe3pJKjvw2xitzulPLoAL+GD7T0H/C/TXfmIiTGVVNn8NaYMif8/0R CEqmq0HTtml9tsj346/bams4MCmpgD1hXNJoTeksEWdsfbnOHb71T64vE A==; X-IronPort-AV: E=McAfee;i="6400,9594,10406"; a="264894389" X-IronPort-AV: E=Sophos;i="5.92,267,1650956400"; d="scan'208";a="264894389" Received: from orsmga006.jf.intel.com ([10.7.209.51]) by fmsmga106.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 12 Jul 2022 21:28:54 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.92,267,1650956400"; d="scan'208";a="570463277" Received: from srikandan-ilbpg12.png.intel.com ([10.88.229.69]) by orsmga006.jf.intel.com with ESMTP; 12 Jul 2022 21:28:51 -0700 From: nandhini.srikandan@intel.com To: fancer.lancer@gmail.com, broonie@kernel.org, robh+dt@kernel.org, linux-spi@vger.kernel.org, linux-kernel@vger.kernel.org Cc: devicetree@vger.kernel.org, mgross@linux.intel.com, kris.pan@intel.com, kenchappa.demakkanavar@intel.com, furong.zhou@intel.com, mallikarjunappa.sangannavar@intel.com, mahesh.r.vaidya@intel.com, nandhini.srikandan@intel.com, rashmi.a@intel.com Subject: [PATCH v6 3/4] spi: dw: Add support for master mode selection for DWC SSI controller Date: Wed, 13 Jul 2022 12:22:22 +0800 Message-Id: <20220713042223.1458-4-nandhini.srikandan@intel.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20220713042223.1458-1-nandhini.srikandan@intel.com> References: <20220713042223.1458-1-nandhini.srikandan@intel.com> Precedence: bulk List-ID: X-Mailing-List: linux-spi@vger.kernel.org From: Nandhini Srikandan Add support to select the controller mode as master mode by setting Bit 31 of CTRLR0 register. This feature is supported for controller versions above v1.02. Signed-off-by: Nandhini Srikandan Acked-by: Serge Semin --- drivers/spi/spi-dw-core.c | 5 +++-- drivers/spi/spi-dw.h | 8 +------- 2 files changed, 4 insertions(+), 9 deletions(-) diff --git a/drivers/spi/spi-dw-core.c b/drivers/spi/spi-dw-core.c index ecea471ff42c..41ae21e1b879 100644 --- a/drivers/spi/spi-dw-core.c +++ b/drivers/spi/spi-dw-core.c @@ -307,8 +307,9 @@ static u32 dw_spi_prepare_cr0(struct dw_spi *dws, struct spi_device *spi) if (spi->mode & SPI_LOOP) cr0 |= DW_HSSI_CTRLR0_SRL; - if (dws->caps & DW_SPI_CAP_KEEMBAY_MST) - cr0 |= DW_HSSI_CTRLR0_KEEMBAY_MST; + /* CTRLR0[31] MST */ + if (dw_spi_ver_is_ge(dws, HSSI, 102A)) + cr0 |= DW_HSSI_CTRLR0_MST; } return cr0; diff --git a/drivers/spi/spi-dw.h b/drivers/spi/spi-dw.h index 79d853f6d192..8b8f924ac410 100644 --- a/drivers/spi/spi-dw.h +++ b/drivers/spi/spi-dw.h @@ -94,13 +94,7 @@ #define DW_HSSI_CTRLR0_SCPOL BIT(9) #define DW_HSSI_CTRLR0_TMOD_MASK GENMASK(11, 10) #define DW_HSSI_CTRLR0_SRL BIT(13) - -/* - * For Keem Bay, CTRLR0[31] is used to select controller mode. - * 0: SSI is slave - * 1: SSI is master - */ -#define DW_HSSI_CTRLR0_KEEMBAY_MST BIT(31) +#define DW_HSSI_CTRLR0_MST BIT(31) /* Bit fields in CTRLR1 */ #define DW_SPI_NDF_MASK GENMASK(15, 0)