From patchwork Wed Nov 17 10:43:46 2010 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Sekhar Nori X-Patchwork-Id: 331581 Received: from devils.ext.ti.com (devils.ext.ti.com [198.47.26.153]) by demeter1.kernel.org (8.14.4/8.14.3) with ESMTP id oAHAnBru009123 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=OK) for ; Wed, 17 Nov 2010 10:49:32 GMT Received: from dlep36.itg.ti.com ([157.170.170.91]) by devils.ext.ti.com (8.13.7/8.13.7) with ESMTP id oAHAnBJN006448 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=NO) for ; Wed, 17 Nov 2010 04:49:11 -0600 Received: from linux.omap.com (localhost [127.0.0.1]) by dlep36.itg.ti.com (8.13.8/8.13.8) with ESMTP id oAHAnBap027657 for ; Wed, 17 Nov 2010 04:49:11 -0600 (CST) Received: from linux.omap.com (localhost [127.0.0.1]) by linux.omap.com (Postfix) with ESMTP id F326A80627 for ; Wed, 17 Nov 2010 04:49:10 -0600 (CST) X-Original-To: davinci-linux-open-source@linux.davincidsp.com Delivered-To: davinci-linux-open-source@linux.davincidsp.com Received: from dbdp31.itg.ti.com (dbdp31.itg.ti.com [172.24.170.98]) by linux.omap.com (Postfix) with ESMTP id B987F80635 for ; Wed, 17 Nov 2010 04:44:30 -0600 (CST) Received: from psplinux051.india.ti.com (localhost [127.0.0.1]) by dbdp31.itg.ti.com (8.13.8/8.13.8) with ESMTP id oAHAiR5M021852; Wed, 17 Nov 2010 16:14:28 +0530 (IST) Received: from psplinux051.india.ti.com (localhost [127.0.0.1]) by psplinux051.india.ti.com (8.13.1/8.13.1) with ESMTP id oAHAiOSb030370; Wed, 17 Nov 2010 16:14:24 +0530 Received: (from a0875516@localhost) by psplinux051.india.ti.com (8.13.1/8.13.1/Submit) id oAHAiORM030367; Wed, 17 Nov 2010 16:14:24 +0530 From: Sekhar Nori To: spi-devel-general@lists.sourceforge.net Subject: [PATCH 14/49] spi: davinci: setup chip-select timers values only if timer enabled Date: Wed, 17 Nov 2010 16:13:46 +0530 Message-Id: <1289990661-30126-15-git-send-email-nsekhar@ti.com> X-Mailer: git-send-email 1.6.2.4 In-Reply-To: <1289990661-30126-14-git-send-email-nsekhar@ti.com> References: <1289990661-30126-1-git-send-email-nsekhar@ti.com> <1289990661-30126-2-git-send-email-nsekhar@ti.com> <1289990661-30126-3-git-send-email-nsekhar@ti.com> <1289990661-30126-4-git-send-email-nsekhar@ti.com> <1289990661-30126-5-git-send-email-nsekhar@ti.com> <1289990661-30126-6-git-send-email-nsekhar@ti.com> <1289990661-30126-7-git-send-email-nsekhar@ti.com> <1289990661-30126-8-git-send-email-nsekhar@ti.com> <1289990661-30126-9-git-send-email-nsekhar@ti.com> <1289990661-30126-10-git-send-email-nsekhar@ti.com> <1289990661-30126-11-git-send-email-nsekhar@ti.com> <1289990661-30126-12-git-send-email-nsekhar@ti.com> <1289990661-30126-13-git-send-email-nsekhar@ti.com> <1289990661-30126-14-git-send-email-nsekhar@ti.com> Cc: Grant Likely , davinci-linux-open-source@linux.davincidsp.com, David Brownell X-BeenThere: davinci-linux-open-source@linux.davincidsp.com X-Mailman-Version: 2.1.12 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , MIME-Version: 1.0 Sender: davinci-linux-open-source-bounces+patchwork-davinci=patchwork.kernel.org@linux.davincidsp.com Errors-To: davinci-linux-open-source-bounces+patchwork-davinci=patchwork.kernel.org@linux.davincidsp.com X-Greylist: Sender succeeded STARTTLS authentication, not delayed by milter-greylist-4.2.3 (demeter1.kernel.org [140.211.167.41]); Wed, 17 Nov 2010 10:49:32 +0000 (UTC) diff --git a/drivers/spi/davinci_spi.c b/drivers/spi/davinci_spi.c index 34b28fe..d09b63c 100644 --- a/drivers/spi/davinci_spi.c +++ b/drivers/spi/davinci_spi.c @@ -374,6 +374,10 @@ static int davinci_spi_setup_transfer(struct spi_device *spi, if (spicfg->timer_disable) spifmt |= SPIFMT_DISTIMER_MASK; + else + iowrite32((spicfg->c2tdelay << SPI_C2TDELAY_SHIFT) | + (spicfg->t2cdelay << SPI_T2CDELAY_SHIFT), + davinci_spi->base + SPIDELAY); if (spi->mode & SPI_READY) spifmt |= SPIFMT_WAITENA_MASK; @@ -607,13 +611,9 @@ static int davinci_spi_bufs_pio(struct spi_device *spi, struct spi_transfer *t) u32 tx_data, data1_reg_val; u32 buf_val, flg_val; struct davinci_spi_platform_data *pdata; - struct davinci_spi_config *spicfg; davinci_spi = spi_master_get_devdata(spi->master); pdata = davinci_spi->pdata; - spicfg = (struct davinci_spi_config *)spi->controller_data; - if (!spicfg) - spicfg = &davinci_spi_default_cfg; davinci_spi->tx = t->tx_buf; davinci_spi->rx = t->rx_buf; @@ -633,10 +633,6 @@ static int davinci_spi_bufs_pio(struct spi_device *spi, struct spi_transfer *t) /* Enable SPI */ set_io_bits(davinci_spi->base + SPIGCR1, SPIGCR1_SPIENA_MASK); - iowrite32((spicfg->c2tdelay << SPI_C2TDELAY_SHIFT) | - (spicfg->t2cdelay << SPI_T2CDELAY_SHIFT), - davinci_spi->base + SPIDELAY); - count = davinci_spi->count; /* Determine the command to execute READ or WRITE */ @@ -741,14 +737,10 @@ static int davinci_spi_bufs_dma(struct spi_device *spi, struct spi_transfer *t) struct davinci_spi_dma *davinci_spi_dma; int word_len, data_type, ret; unsigned long tx_reg, rx_reg; - struct davinci_spi_config *spicfg; struct device *sdev; davinci_spi = spi_master_get_devdata(spi->master); sdev = davinci_spi->bitbang.master->dev.parent; - spicfg = (struct davinci_spi_config *)spi->controller_data; - if (!spicfg) - spicfg = &davinci_spi_default_cfg; davinci_spi_dma = &davinci_spi->dma_channels[spi->chip_select]; @@ -784,11 +776,6 @@ static int davinci_spi_bufs_dma(struct spi_device *spi, struct spi_transfer *t) if (ret) return ret; - /* Put delay val if required */ - iowrite32((spicfg->c2tdelay << SPI_C2TDELAY_SHIFT) | - (spicfg->t2cdelay << SPI_T2CDELAY_SHIFT), - davinci_spi->base + SPIDELAY); - count = davinci_spi->count; /* the number of elements */ /* disable all interrupts for dma transfers */