From patchwork Wed Nov 17 10:44:01 2010 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Sekhar Nori X-Patchwork-Id: 331911 Received: from lists.sourceforge.net (lists.sourceforge.net [216.34.181.88]) by demeter1.kernel.org (8.14.4/8.14.3) with ESMTP id oAHAuqOH013231 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=NO) for ; Wed, 17 Nov 2010 10:57:13 GMT Received: from localhost ([127.0.0.1] helo=sfs-ml-4.v29.ch3.sourceforge.com) by sfs-ml-4.v29.ch3.sourceforge.com with esmtp (Exim 4.69) (envelope-from ) id 1PIfh6-0001jd-NJ; Wed, 17 Nov 2010 10:56:52 +0000 Received: from sog-mx-1.v43.ch3.sourceforge.com ([172.29.43.191] helo=mx.sourceforge.net) by sfs-ml-4.v29.ch3.sourceforge.com with esmtp (Exim 4.69) (envelope-from ) id 1PIfh5-0001jQ-6Q for spi-devel-general@lists.sourceforge.net; Wed, 17 Nov 2010 10:56:51 +0000 Received-SPF: pass (sog-mx-1.v43.ch3.sourceforge.com: domain of india.ti.com designates 198.47.26.153 as permitted sender) client-ip=198.47.26.153; envelope-from=a0875516@india.ti.com; helo=devils.ext.ti.com; Received: from devils.ext.ti.com ([198.47.26.153]) by sog-mx-1.v43.ch3.sourceforge.com with esmtps (TLSv1:AES256-SHA:256) (Exim 4.69) id 1PIfh3-0002q0-W1; Wed, 17 Nov 2010 10:56:51 +0000 Received: from dbdp31.itg.ti.com ([172.24.170.98]) by devils.ext.ti.com (8.13.7/8.13.7) with ESMTP id oAHAiYL9003605 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=NO); Wed, 17 Nov 2010 04:44:37 -0600 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 oAHAiTuF021895; Wed, 17 Nov 2010 16:14:30 +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 oAHAiPZA030468; Wed, 17 Nov 2010 16:14:25 +0530 Received: (from a0875516@localhost) by psplinux051.india.ti.com (8.13.1/8.13.1/Submit) id oAHAiPYl030465; Wed, 17 Nov 2010 16:14:25 +0530 From: Sekhar Nori To: spi-devel-general@lists.sourceforge.net Subject: [PATCH 29/49] spi: davinci: remove unnecessary function davinci_spi_bufs_prep() Date: Wed, 17 Nov 2010 16:14:01 +0530 Message-Id: <1289990661-30126-30-git-send-email-nsekhar@ti.com> X-Mailer: git-send-email 1.6.2.4 In-Reply-To: <1289990661-30126-29-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> <1289990661-30126-15-git-send-email-nsekhar@ti.com> <1289990661-30126-16-git-send-email-nsekhar@ti.com> <1289990661-30126-17-git-send-email-nsekhar@ti.com> <1289990661-30126-18-git-send-email-nsekhar@ti.com> <1289990661-30126-19-git-send-email-nsekhar@ti.com> <1289990661-30126-20-git-send-email-nsekhar@ti.com> <1289990661-30126-21-git-send-email-nsekhar@ti.com> <1289990661-30126-22-git-send-email-nsekhar@ti.com> <1289990661-30126-23-git-send-email-nsekhar@ti.com> <1289990661-30126-24-git-send-email-nsekhar@ti.com> <1289990661-30126-25-git-send-email-nsekhar@ti.com> <1289990661-30126-26-git-send-email-nsekhar@ti.com> <1289990661-30126-27-git-send-email-nsekhar@ti.com> <1289990661-30126-28-git-send-email-nsekhar@ti.com> <1289990661-30126-29-git-send-email-nsekhar@ti.com> X-Spam-Score: -1.3 (-) X-Spam-Report: Spam Filtering performed by mx.sourceforge.net. See http://spamassassin.org/tag/ for more details. -1.5 SPF_CHECK_PASS SPF reports sender host as permitted sender for sender-domain -0.0 T_RP_MATCHES_RCVD Envelope sender domain matches handover relay domain -0.0 SPF_PASS SPF: sender matches SPF record 0.2 AWL AWL: From: address is in the auto white-list X-Headers-End: 1PIfh3-0002q0-W1 Cc: davinci-linux-open-source@linux.davincidsp.com, David Brownell , Sekhar Nori X-BeenThere: spi-devel-general@lists.sourceforge.net X-Mailman-Version: 2.1.9 Precedence: list List-Id: Linux SPI core/device drivers discussion List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , MIME-Version: 1.0 Errors-To: spi-devel-general-bounces@lists.sourceforge.net X-Greylist: IP, sender and recipient auto-whitelisted, not delayed by milter-greylist-4.2.3 (demeter1.kernel.org [140.211.167.41]); Wed, 17 Nov 2010 10:57:14 +0000 (UTC) diff --git a/drivers/spi/davinci_spi.c b/drivers/spi/davinci_spi.c index 6f279c5..05b6145 100644 --- a/drivers/spi/davinci_spi.c +++ b/drivers/spi/davinci_spi.c @@ -482,13 +482,33 @@ static int davinci_spi_setup(struct spi_device *spi) int retval; struct davinci_spi *davinci_spi; struct davinci_spi_dma *davinci_spi_dma; + struct davinci_spi_platform_data *pdata; davinci_spi = spi_master_get_devdata(spi->master); + pdata = davinci_spi->pdata; /* if bits per word length is zero then set it default 8 */ if (!spi->bits_per_word) spi->bits_per_word = 8; + if (!(spi->mode & SPI_NO_CS)) { + if ((pdata->chip_sel == NULL) || + (pdata->chip_sel[spi->chip_select] == SPI_INTERN_CS)) + set_io_bits(davinci_spi->base + SPIPC0, + 1 << spi->chip_select); + + } + + if (spi->mode & SPI_READY) + set_io_bits(davinci_spi->base + SPIPC0, SPIPC0_SPIENA_MASK); + + if (spi->mode & SPI_LOOP) + set_io_bits(davinci_spi->base + SPIGCR1, + SPIGCR1_LOOPBACK_MASK); + else + clear_io_bits(davinci_spi->base + SPIGCR1, + SPIGCR1_LOOPBACK_MASK); + if (use_dma && davinci_spi->dma_channels) { davinci_spi_dma = &davinci_spi->dma_channels[spi->chip_select]; @@ -523,40 +543,6 @@ static void davinci_spi_cleanup(struct spi_device *spi) } } -static int davinci_spi_bufs_prep(struct spi_device *spi, - struct davinci_spi *davinci_spi) -{ - struct davinci_spi_platform_data *pdata; - int op_mode = 0; - - /* - * REVISIT unless devices disagree about SPI_LOOP or - * SPI_READY (SPI_NO_CS only allows one device!), this - * should not need to be done before each message... - * optimize for both flags staying cleared. - */ - - if (!(spi->mode & SPI_NO_CS)) { - pdata = davinci_spi->pdata; - if (!pdata->chip_sel || - pdata->chip_sel[spi->chip_select] == SPI_INTERN_CS) - op_mode |= 1 << spi->chip_select; - } - if (spi->mode & SPI_READY) - op_mode |= SPIPC0_SPIENA_MASK; - - iowrite32(op_mode, davinci_spi->base + SPIPC0); - - if (spi->mode & SPI_LOOP) - set_io_bits(davinci_spi->base + SPIGCR1, - SPIGCR1_LOOPBACK_MASK); - else - clear_io_bits(davinci_spi->base + SPIGCR1, - SPIGCR1_LOOPBACK_MASK); - - return 0; -} - static int davinci_spi_check_error(struct davinci_spi *davinci_spi, int int_status) { @@ -664,10 +650,6 @@ static int davinci_spi_bufs_pio(struct spi_device *spi, struct spi_transfer *t) davinci_spi->bytes_per_word[spi->chip_select]; davinci_spi->rcount = davinci_spi->wcount; - ret = davinci_spi_bufs_prep(spi, davinci_spi); - if (ret) - return ret; - data1_reg_val = ioread32(davinci_spi->base + SPIDAT1); /* Enable SPI */ @@ -769,10 +751,6 @@ static int davinci_spi_bufs_dma(struct spi_device *spi, struct spi_transfer *t) init_completion(&davinci_spi_dma->dma_rx_completion); init_completion(&davinci_spi_dma->dma_tx_completion); - ret = davinci_spi_bufs_prep(spi, davinci_spi); - if (ret) - return ret; - count = t->len / data_type; /* the number of elements */ /* disable all interrupts for dma transfers */ @@ -1026,7 +1004,7 @@ static int davinci_spi_probe(struct platform_device *pdev) udelay(100); iowrite32(1, davinci_spi->base + SPIGCR0); - /* Set up SPIPC0. CS and ENA init is done in davinci_spi_bufs_prep */ + /* Set up SPIPC0. CS and ENA init is done in davinci_spi_setup */ spipc0 = SPIPC0_DIFUN_MASK | SPIPC0_DOFUN_MASK | SPIPC0_CLKFUN_MASK; iowrite32(spipc0, davinci_spi->base + SPIPC0);