From patchwork Wed Jan 28 12:23:47 2015 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Ricardo Ribalda Delgado X-Patchwork-Id: 5728071 Return-Path: X-Original-To: patchwork-linux-arm@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork1.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.29.136]) by patchwork1.web.kernel.org (Postfix) with ESMTP id 3C0EB9F1C5 for ; Wed, 28 Jan 2015 12:28:32 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 5618E2025A for ; Wed, 28 Jan 2015 12:28:31 +0000 (UTC) Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.9]) (using TLSv1.2 with cipher DHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 83B6120251 for ; Wed, 28 Jan 2015 12:28:30 +0000 (UTC) Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.80.1 #2 (Red Hat Linux)) id 1YGRhS-0007ry-Ov; Wed, 28 Jan 2015 12:26:26 +0000 Received: from mail-la0-x236.google.com ([2a00:1450:4010:c03::236]) by bombadil.infradead.org with esmtps (Exim 4.80.1 #2 (Red Hat Linux)) id 1YGRfZ-00054Q-KU for linux-arm-kernel@lists.infradead.org; Wed, 28 Jan 2015 12:24:30 +0000 Received: by mail-la0-f54.google.com with SMTP id hv19so18548980lab.13 for ; Wed, 28 Jan 2015 04:24:07 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=from:to:cc:subject:date:message-id:in-reply-to:references; bh=Xj5NVsBlC6bmwvLEMJK/qw3feQYAx2kDJb8fmLLhhho=; b=HhEq8a6vw+DqWBoA+vIUdDSXx1mt9llMJ1y8zhCw+IxxxpXvon12R9Q/FDuWabSFRP CKU6/ZmoKOP1bPi/7mLCT1zy47OzDcwpGx8KFy+tTGZ8N1evy9Vv7o6ocFIgrh/BsDmU O85SBzw7mpAAqCA9EEo60G9vBQQnFXxrlbxOWXd0Wu5iP86dOlYNJrZtgV7hmPM4aVwq +i6IrE3MR88vNVCXbHEToG+JVadkVrgKb7pFCFR/T3+52GfFsisJUQ5h5tgq8MhOMmSO +RDoNCmGGhFtbxgxk9sMEGaR2vJsyiyA4/9/VfYs2qXlbH+ryN+JSPlNjifJW5enJT2T BUEA== X-Received: by 10.152.19.194 with SMTP id h2mr4235376lae.77.1422447847301; Wed, 28 Jan 2015 04:24:07 -0800 (PST) Received: from neopili.qtec.com (cpe.xe-3-0-1-778.vbrnqe10.dk.customer.tdc.net. [80.197.57.18]) by mx.google.com with ESMTPSA id xh7sm1293741lbb.17.2015.01.28.04.24.06 (version=TLSv1.2 cipher=ECDHE-RSA-AES128-SHA bits=128/128); Wed, 28 Jan 2015 04:24:06 -0800 (PST) From: Ricardo Ribalda Delgado To: Mark Brown , Michal Simek , =?UTF-8?q?S=C3=B6ren=20Brinkmann?= , linux-spi@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org Subject: [PATCH v2 08/15] spi/xilinx: Remove rx_fn and tx_fn pointer Date: Wed, 28 Jan 2015 13:23:47 +0100 Message-Id: <1422447834-23116-9-git-send-email-ricardo.ribalda@gmail.com> X-Mailer: git-send-email 2.1.4 In-Reply-To: <1422447834-23116-1-git-send-email-ricardo.ribalda@gmail.com> References: <1422447834-23116-1-git-send-email-ricardo.ribalda@gmail.com> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20150128_042429_883478_E49F631C X-CRM114-Status: GOOD ( 13.94 ) X-Spam-Score: -0.8 (/) Cc: Ricardo Ribalda Delgado X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.18-1 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , MIME-Version: 1.0 Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org X-Spam-Status: No, score=-4.1 required=5.0 tests=BAYES_00, DKIM_ADSP_CUSTOM_MED, DKIM_SIGNED, FREEMAIL_FROM, RCVD_IN_DNSWL_MED, T_DKIM_INVALID, T_RP_MATCHES_RCVD, UNPARSEABLE_RELAY autolearn=unavailable version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP Simplify the code by removing the tx and and rx function pointers and substitute them by a single function. Signed-off-by: Ricardo Ribalda Delgado --- v2: Changes Requested by Mark Brown Code style a / 8 instead of a/8 drivers/spi/spi-xilinx.c | 69 +++++++++++++----------------------------------- 1 file changed, 18 insertions(+), 51 deletions(-) diff --git a/drivers/spi/spi-xilinx.c b/drivers/spi/spi-xilinx.c index 523da73..ac94e54 100644 --- a/drivers/spi/spi-xilinx.c +++ b/drivers/spi/spi-xilinx.c @@ -92,8 +92,6 @@ struct xilinx_spi { u32 cs_inactive; /* Level of the CS pins when inactive*/ unsigned int (*read_fn)(void __iomem *); void (*write_fn)(u32, void __iomem *); - void (*tx_fn)(struct xilinx_spi *); - void (*rx_fn)(struct xilinx_spi *); }; static void xspi_write32(u32 val, void __iomem *addr) @@ -116,49 +114,32 @@ static unsigned int xspi_read32_be(void __iomem *addr) return ioread32be(addr); } -static void xspi_tx8(struct xilinx_spi *xspi) -{ - xspi->write_fn(*xspi->tx_ptr, xspi->regs + XSPI_TXD_OFFSET); - xspi->tx_ptr++; -} - -static void xspi_tx16(struct xilinx_spi *xspi) -{ - xspi->write_fn(*(u16 *)(xspi->tx_ptr), xspi->regs + XSPI_TXD_OFFSET); - xspi->tx_ptr += 2; -} - -static void xspi_tx32(struct xilinx_spi *xspi) +static void xilinx_spi_tx(struct xilinx_spi *xspi) { xspi->write_fn(*(u32 *)(xspi->tx_ptr), xspi->regs + XSPI_TXD_OFFSET); - xspi->tx_ptr += 4; + xspi->tx_ptr += xspi->bits_per_word / 8; } -static void xspi_rx8(struct xilinx_spi *xspi) +static void xilinx_spi_rx(struct xilinx_spi *xspi) { u32 data = xspi->read_fn(xspi->regs + XSPI_RXD_OFFSET); - if (xspi->rx_ptr) { - *xspi->rx_ptr = data & 0xff; - xspi->rx_ptr++; - } -} -static void xspi_rx16(struct xilinx_spi *xspi) -{ - u32 data = xspi->read_fn(xspi->regs + XSPI_RXD_OFFSET); - if (xspi->rx_ptr) { - *(u16 *)(xspi->rx_ptr) = data & 0xffff; - xspi->rx_ptr += 2; - } -} + if (!xspi->rx_ptr) + return; -static void xspi_rx32(struct xilinx_spi *xspi) -{ - u32 data = xspi->read_fn(xspi->regs + XSPI_RXD_OFFSET); - if (xspi->rx_ptr) { + switch (xspi->bits_per_word) { + case 8: + *(u8 *)(xspi->rx_ptr) = data; + break; + case 16: + *(u16 *)(xspi->rx_ptr) = data; + break; + case 32: *(u32 *)(xspi->rx_ptr) = data; - xspi->rx_ptr += 4; + break; } + + xspi->rx_ptr += xspi->bits_per_word / 8; } static void xspi_init_hw(struct xilinx_spi *xspi) @@ -250,7 +231,7 @@ static void xilinx_spi_fill_tx_fifo(struct xilinx_spi *xspi, int n_words) while (n_words--) if (xspi->tx_ptr) - xspi->tx_fn(xspi); + xilinx_spi_tx(xspi); else xspi->write_fn(0, xspi->regs + XSPI_TXD_OFFSET); return; @@ -301,7 +282,7 @@ static int xilinx_spi_txrx_bufs(struct spi_device *spi, struct spi_transfer *t) /* Read out all the data from the Rx FIFO */ while (n_words--) - xspi->rx_fn(xspi); + xilinx_spi_rx(xspi); } return t->len - xspi->remaining_bytes; @@ -430,20 +411,6 @@ static int xilinx_spi_probe(struct platform_device *pdev) master->bits_per_word_mask = SPI_BPW_MASK(bits_per_word); xspi->bits_per_word = bits_per_word; - if (xspi->bits_per_word == 8) { - xspi->tx_fn = xspi_tx8; - xspi->rx_fn = xspi_rx8; - } else if (xspi->bits_per_word == 16) { - xspi->tx_fn = xspi_tx16; - xspi->rx_fn = xspi_rx16; - } else if (xspi->bits_per_word == 32) { - xspi->tx_fn = xspi_tx32; - xspi->rx_fn = xspi_rx32; - } else { - ret = -EINVAL; - goto put_master; - } - xspi->buffer_size = xilinx_spi_find_buffer_size(xspi); xspi->irq = platform_get_irq(pdev, 0);