From patchwork Tue Feb 18 10:58:09 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Geert Uytterhoeven X-Patchwork-Id: 11388219 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 A64781892 for ; Tue, 18 Feb 2020 10:58:15 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 87CC6206E2 for ; Tue, 18 Feb 2020 10:58:15 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726363AbgBRK6O (ORCPT ); Tue, 18 Feb 2020 05:58:14 -0500 Received: from laurent.telenet-ops.be ([195.130.137.89]:58222 "EHLO laurent.telenet-ops.be" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726411AbgBRK6O (ORCPT ); Tue, 18 Feb 2020 05:58:14 -0500 Received: from ramsan ([84.195.182.253]) by laurent.telenet-ops.be with bizsmtp id 4AyD2200R5USYZQ01AyDzD; Tue, 18 Feb 2020 11:58:13 +0100 Received: from rox.of.borg ([192.168.97.57]) by ramsan with esmtp (Exim 4.90_1) (envelope-from ) id 1j40Zx-0003jP-1O; Tue, 18 Feb 2020 11:58:13 +0100 Received: from geert by rox.of.borg with local (Exim 4.90_1) (envelope-from ) id 1j40Zx-0000Fg-0L; Tue, 18 Feb 2020 11:58:13 +0100 From: Geert Uytterhoeven To: Mark Brown Cc: Hoan Nguyen An , linux-spi@vger.kernel.org, linux-renesas-soc@vger.kernel.org, Geert Uytterhoeven Subject: [PATCH 2/2] spi: rspi: Add support for LSB-first word order Date: Tue, 18 Feb 2020 11:58:09 +0100 Message-Id: <20200218105810.902-3-geert+renesas@glider.be> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20200218105810.902-1-geert+renesas@glider.be> References: <20200218105810.902-1-geert+renesas@glider.be> Sender: linux-spi-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-spi@vger.kernel.org All RSPI variants support selecting the word order. Advertize support for LSB-first order, and act upon the flag being set. 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 7a1e6d524f34a416..aef05f2ac749c21d 100644 --- a/drivers/spi/spi-rspi.c +++ b/drivers/spi/spi-rspi.c @@ -933,6 +933,8 @@ static int rspi_prepare_message(struct spi_controller *ctlr, rspi->spcmd |= SPCMD_CPOL; if (spi->mode & SPI_CPHA) rspi->spcmd |= SPCMD_CPHA; + if (spi->mode & SPI_LSB_FIRST) + rspi->spcmd |= SPCMD_LSBF; /* Configure slave signal to assert */ rspi->spcmd |= SPCMD_SSLA(spi->cs_gpiod ? rspi->ctlr->unused_native_cs @@ -1255,7 +1257,8 @@ static int rspi_probe(struct platform_device *pdev) ctlr->transfer_one = ops->transfer_one; ctlr->prepare_message = rspi_prepare_message; ctlr->unprepare_message = rspi_unprepare_message; - ctlr->mode_bits = SPI_CPHA | SPI_CPOL | SPI_LOOP | ops->extra_mode_bits; + ctlr->mode_bits = SPI_CPHA | SPI_CPOL | SPI_LSB_FIRST | SPI_LOOP | + ops->extra_mode_bits; ctlr->flags = ops->flags; ctlr->dev.of_node = pdev->dev.of_node; ctlr->use_gpio_descriptors = true;