From patchwork Sat Jul 9 17:16:40 2011 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Shawn Guo X-Patchwork-Id: 2635 Return-Path: X-Original-To: patchwork@peony.canonical.com Delivered-To: patchwork@peony.canonical.com Received: from fiordland.canonical.com (fiordland.canonical.com [91.189.94.145]) by peony.canonical.com (Postfix) with ESMTP id D290623F57 for ; Sat, 9 Jul 2011 17:06:37 +0000 (UTC) Received: from mail-qy0-f173.google.com (mail-qy0-f173.google.com [209.85.216.173]) by fiordland.canonical.com (Postfix) with ESMTP id A3A8DA1857D for ; Sat, 9 Jul 2011 17:06:37 +0000 (UTC) Received: by qyk10 with SMTP id 10so922825qyk.11 for ; Sat, 09 Jul 2011 10:06:37 -0700 (PDT) Received: by 10.229.1.140 with SMTP id 12mr2453132qcf.118.1310231197107; Sat, 09 Jul 2011 10:06:37 -0700 (PDT) X-Forwarded-To: linaro-patchwork@canonical.com X-Forwarded-For: patch@linaro.org linaro-patchwork@canonical.com Delivered-To: patches@linaro.org Received: by 10.229.48.135 with SMTP id r7cs161032qcf; Sat, 9 Jul 2011 10:06:36 -0700 (PDT) Received: by 10.42.168.5 with SMTP id u5mr3405919icy.510.1310231196398; Sat, 09 Jul 2011 10:06:36 -0700 (PDT) Received: from mail-iy0-f178.google.com (mail-iy0-f178.google.com [209.85.210.178]) by mx.google.com with ESMTPS id bt10si37480404icb.38.2011.07.09.10.06.36 (version=TLSv1/SSLv3 cipher=OTHER); Sat, 09 Jul 2011 10:06:36 -0700 (PDT) Received-SPF: neutral (google.com: 209.85.210.178 is neither permitted nor denied by best guess record for domain of shawn.guo@linaro.org) client-ip=209.85.210.178; Authentication-Results: mx.google.com; spf=neutral (google.com: 209.85.210.178 is neither permitted nor denied by best guess record for domain of shawn.guo@linaro.org) smtp.mail=shawn.guo@linaro.org Received: by mail-iy0-f178.google.com with SMTP id 26so3125088iyb.37 for ; Sat, 09 Jul 2011 10:06:36 -0700 (PDT) Received: by 10.231.161.148 with SMTP id r20mr1219273ibx.146.1310231195976; Sat, 09 Jul 2011 10:06:35 -0700 (PDT) Received: from localhost.localdomain ([114.216.146.213]) by mx.google.com with ESMTPS id y3sm1839319iba.4.2011.07.09.10.06.18 (version=TLSv1/SSLv3 cipher=OTHER); Sat, 09 Jul 2011 10:06:35 -0700 (PDT) From: Shawn Guo To: spi-devel-general@lists.sourceforge.net Cc: devicetree-discuss@lists.ozlabs.org, linux-arm-kernel@lists.infradead.org, patches@linaro.org, Shawn Guo , =?UTF-8?q?Uwe=20Kleine-K=C3=B6nig?= , Sascha Hauer , Grant Likely Subject: [PATCH v2 6/7] spi/imx: copy gpio number passed by platform data into driver private data Date: Sun, 10 Jul 2011 01:16:40 +0800 Message-Id: <1310231801-18761-7-git-send-email-shawn.guo@linaro.org> X-Mailer: git-send-email 1.7.4.1 In-Reply-To: <1310231801-18761-1-git-send-email-shawn.guo@linaro.org> References: <1310231801-18761-1-git-send-email-shawn.guo@linaro.org> MIME-Version: 1.0 It copies gpio number passed via platform data embedded pointer into driver private data, so that we do not need to refer to this embedded pointer passed by platform data after probe function exits. Signed-off-by: Shawn Guo Cc: Uwe Kleine-König Cc: Sascha Hauer Cc: Grant Likely --- drivers/spi/spi-imx.c | 12 +++++++----- 1 files changed, 7 insertions(+), 5 deletions(-) diff --git a/drivers/spi/spi-imx.c b/drivers/spi/spi-imx.c index 2ed9c32..ad61828 100644 --- a/drivers/spi/spi-imx.c +++ b/drivers/spi/spi-imx.c @@ -84,7 +84,6 @@ struct spi_imx_data { int irq; struct clk *clk; unsigned long spi_clk; - int *chipselect; unsigned int count; void (*tx)(struct spi_imx_data *); @@ -94,6 +93,7 @@ struct spi_imx_data { unsigned int txfifo; /* number of words pushed in tx FIFO */ struct spi_imx_devtype_data *devtype_data; + int chipselect[0]; }; static inline int is_imx27_cspi(struct spi_imx_data *d) @@ -743,7 +743,7 @@ static int __devinit spi_imx_probe(struct platform_device *pdev) struct spi_master *master; struct spi_imx_data *spi_imx; struct resource *res; - int i, ret; + int i, ret, num_cs; mxc_platform_info = dev_get_platdata(&pdev->dev); if (!mxc_platform_info) { @@ -751,20 +751,22 @@ static int __devinit spi_imx_probe(struct platform_device *pdev) return -EINVAL; } - master = spi_alloc_master(&pdev->dev, sizeof(struct spi_imx_data)); + num_cs = mxc_platform_info->num_chipselect; + master = spi_alloc_master(&pdev->dev, + sizeof(struct spi_imx_data) + sizeof(int) * num_cs); if (!master) return -ENOMEM; platform_set_drvdata(pdev, master); master->bus_num = pdev->id; - master->num_chipselect = mxc_platform_info->num_chipselect; + master->num_chipselect = num_cs; spi_imx = spi_master_get_devdata(master); spi_imx->bitbang.master = spi_master_get(master); - spi_imx->chipselect = mxc_platform_info->chipselect; for (i = 0; i < master->num_chipselect; i++) { + spi_imx->chipselect[i] = mxc_platform_info->chipselect[i]; if (spi_imx->chipselect[i] < 0) continue; ret = gpio_request(spi_imx->chipselect[i], DRIVER_NAME);