From mboxrd@z Thu Jan 1 00:00:00 1970 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=-9.8 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY,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 9B704C3276D for ; Thu, 2 Jan 2020 14:04:57 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 7269C21835 for ; Thu, 2 Jan 2020 14:04:57 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728533AbgABOEz (ORCPT ); Thu, 2 Jan 2020 09:04:55 -0500 Received: from xavier.telenet-ops.be ([195.130.132.52]:59764 "EHLO xavier.telenet-ops.be" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728408AbgABOEn (ORCPT ); Thu, 2 Jan 2020 09:04:43 -0500 Received: from ramsan ([84.195.182.253]) by xavier.telenet-ops.be with bizsmtp id lS4g2100N5USYZQ01S4gmy; Thu, 02 Jan 2020 15:04:41 +0100 Received: from rox.of.borg ([192.168.97.57]) by ramsan with esmtp (Exim 4.90_1) (envelope-from ) id 1in15c-0006GP-GR; Thu, 02 Jan 2020 15:04:40 +0100 Received: from geert by rox.of.borg with local (Exim 4.90_1) (envelope-from ) id 1in0gG-0007eX-I8; Thu, 02 Jan 2020 14:38:28 +0100 From: Geert Uytterhoeven To: Mark Brown Cc: Chris Brandt , =?UTF-8?q?Jan=20Kundr=C3=A1t?= , linux-spi@vger.kernel.org, linux-kernel@vger.kernel.org, Geert Uytterhoeven Subject: [PATCH 5/6] spi: rspi: Add support for multiple native chip selects Date: Thu, 2 Jan 2020 14:38:21 +0100 Message-Id: <20200102133822.29346-6-geert+renesas@glider.be> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20200102133822.29346-1-geert+renesas@glider.be> References: <20200102133822.29346-1-geert+renesas@glider.be> Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org RSPI variants on some SuperH or R-Mobile SoCs support multiple native chip selects. Add support for this by configuring the SSL Assert Signal Setting. Signed-off-by: Geert Uytterhoeven --- drivers/spi/spi-rspi.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/drivers/spi/spi-rspi.c b/drivers/spi/spi-rspi.c index 9eabef3d6cc478ff..2f5a856a93192702 100644 --- a/drivers/spi/spi-rspi.c +++ b/drivers/spi/spi-rspi.c @@ -159,7 +159,7 @@ #define SPCMD_SPIMOD_DUAL SPCMD_SPIMOD0 #define SPCMD_SPIMOD_QUAD SPCMD_SPIMOD1 #define SPCMD_SPRW 0x0010 /* SPI Read/Write Access (Dual/Quad) */ -#define SPCMD_SSLA_MASK 0x0030 /* SSL Assert Signal Setting (RSPI) */ +#define SPCMD_SSLA(i) ((i) << 4) /* SSL Assert Signal Setting */ #define SPCMD_BRDV_MASK 0x000c /* Bit Rate Division Setting */ #define SPCMD_CPOL 0x0002 /* Clock Polarity Setting */ #define SPCMD_CPHA 0x0001 /* Clock Phase Setting */ @@ -933,6 +933,9 @@ static int rspi_prepare_message(struct spi_controller *ctlr, if (spi->mode & SPI_CPHA) rspi->spcmd |= SPCMD_CPHA; + /* Configure slave signal to assert */ + rspi->spcmd |= SPCMD_SSLA(spi->chip_select); + /* CMOS output mode and MOSI signal from previous transfer */ rspi->sppcr = 0; if (spi->mode & SPI_LOOP) -- 2.17.1