From patchwork Tue Apr 10 22:44:39 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Boris Brezillon X-Patchwork-Id: 896971 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=none (mailfrom) smtp.mailfrom=lists.infradead.org (client-ip=2607:7c80:54:e::133; helo=bombadil.infradead.org; envelope-from=linux-mtd-bounces+incoming=patchwork.ozlabs.org@lists.infradead.org; receiver=) Authentication-Results: ozlabs.org; dmarc=none (p=none dis=none) header.from=bootlin.com Authentication-Results: ozlabs.org; dkim=pass (2048-bit key; unprotected) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="tR03LWIm"; dkim-atps=neutral Received: from bombadil.infradead.org (bombadil.infradead.org [IPv6:2607:7c80:54:e::133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ozlabs.org (Postfix) with ESMTPS id 40LMnP3s0Gz9s0t for ; Wed, 11 Apr 2018 08:50:01 +1000 (AEST) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20170209; h=Sender: Content-Transfer-Encoding:Content-Type:MIME-Version:Cc:List-Subscribe: List-Help:List-Post:List-Archive:List-Unsubscribe:List-Id:References: In-Reply-To:Message-Id:Date:Subject:To:From:Reply-To:Content-ID: Content-Description:Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc :Resent-Message-ID:List-Owner; bh=k/DeN/4rcHRFWJMs40EiH5ntg84TndtX3idj24eVvMM=; b=tR03LWImgqWvUU5mnxB4f0xrCo pJB3ZoG+3U2xTUFktWr1Sw1hZw28lkhmDn9RVz4gbG5GoCBKXGaRwqCGa/KWeeuVn/Zby+IXYHMeW Y0xn6IkfdjcHAEzpbJXBqJU31W0ursiWuIYsQU2123ooqgNzSFcd2QrGkeFv3nCCQu5hByZiEVkuN t92yf7OItQYtJS0EXtBgHSgNyAtD+iPyrqxXRpzkuHVpXZUDDGJ+pvd+/8GG/Q1unaoEY/RYZ8g1z NEJZbsGGcea+3XZoyWZi278gDqx2loGeU/Sw44xoyEwcCfX1kmyzstiXk1COejhr9izGREGf/fewk zu0SUbLA==; Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.90_1 #2 (Red Hat Linux)) id 1f625E-0001YV-7v; Tue, 10 Apr 2018 22:49:48 +0000 Received: from mail.bootlin.com ([62.4.15.54]) by bombadil.infradead.org with esmtp (Exim 4.90_1 #2 (Red Hat Linux)) id 1f620j-0006Ho-Mq for linux-mtd@lists.infradead.org; Tue, 10 Apr 2018 22:45:17 +0000 Received: by mail.bootlin.com (Postfix, from userid 110) id DEACB20DC8; Wed, 11 Apr 2018 00:44:47 +0200 (CEST) X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on mail.bootlin.com X-Spam-Level: X-Spam-Status: No, score=-1.0 required=5.0 tests=ALL_TRUSTED,SHORTCIRCUIT shortcircuit=ham autolearn=disabled version=3.4.0 Received: from localhost.localdomain (unknown [91.160.177.164]) by mail.bootlin.com (Postfix) with ESMTPSA id 74EAE20DC1; Wed, 11 Apr 2018 00:44:47 +0200 (CEST) From: Boris Brezillon To: David Woodhouse , Brian Norris , Boris Brezillon , Marek Vasut , Richard Weinberger , Cyrille Pitchen , linux-mtd@lists.infradead.org, Miquel Raynal , Mark Brown , linux-spi@vger.kernel.org Subject: [PATCH v2 10/10] spi: Get rid of the spi_flash_read() API Date: Wed, 11 Apr 2018 00:44:39 +0200 Message-Id: <20180410224439.9260-11-boris.brezillon@bootlin.com> X-Mailer: git-send-email 2.14.1 In-Reply-To: <20180410224439.9260-1-boris.brezillon@bootlin.com> References: <20180410224439.9260-1-boris.brezillon@bootlin.com> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20180410_154510_127059_B6B3C401 X-CRM114-Status: GOOD ( 24.47 ) X-Spam-Score: -0.0 (/) X-Spam-Report: SpamAssassin version 3.4.1 on bombadil.infradead.org summary: Content analysis details: (-0.0 points) pts rule name description ---- ---------------------- -------------------------------------------------- -0.0 RCVD_IN_DNSWL_NONE RBL: Sender listed at http://www.dnswl.org/, no trust [62.4.15.54 listed in list.dnswl.org] -0.0 SPF_PASS SPF: sender matches SPF record X-BeenThere: linux-mtd@lists.infradead.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: Linux MTD discussion mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Yogesh Gaur , Vignesh R , Kamal Dasu , Maxime Chevallier , Peter Pan , Frieder Schrempf , =?utf-8?b?UmFmYcWCIE1pxYJlY2tp?= , Sourav Poddar MIME-Version: 1.0 Sender: "linux-mtd" Errors-To: linux-mtd-bounces+incoming=patchwork.ozlabs.org@lists.infradead.org This API has been replaced by the spi_mem_xx() one, its only user (spi-nor) has been converted to spi_mem_xx() and all SPI controller drivers that were implementing the ->spi_flash_xxx() hooks are also implementing the spi_mem ones. So we can safely get rid of this API. Signed-off-by: Boris Brezillon --- drivers/spi/spi-bcm-qspi.c | 34 +++------------------------ drivers/spi/spi-bcm53xx.c | 20 +--------------- drivers/spi/spi-ti-qspi.c | 41 --------------------------------- drivers/spi/spi.c | 57 ---------------------------------------------- include/linux/spi/spi.h | 53 ------------------------------------------ 5 files changed, 4 insertions(+), 201 deletions(-) diff --git a/drivers/spi/spi-bcm-qspi.c b/drivers/spi/spi-bcm-qspi.c index 9f94268a68b5..57ceec6c6301 100644 --- a/drivers/spi/spi-bcm-qspi.c +++ b/drivers/spi/spi-bcm-qspi.c @@ -944,9 +944,10 @@ static int bcm_qspi_mspi_exec_mem_op(struct spi_device *spi, return ret; } -static int bcm_qspi_exec_mem_op(struct spi_device *spi, +static int bcm_qspi_exec_mem_op(struct spi_mem *mem, const struct spi_mem_op *op) { + struct spi_device *spi = mem->spi; struct bcm_qspi *qspi = spi_master_get_devdata(spi->master); int ret = 0; bool mspi_read = false; @@ -991,34 +992,6 @@ static int bcm_qspi_exec_mem_op(struct spi_device *spi, return ret; } -static int bcm_qspi_exec_mem_op_wrapper(struct spi_mem *mem, - const struct spi_mem_op *op) -{ - return bcm_qspi_exec_mem_op(mem->spi, op); -} - -static int bcm_qspi_flash_read_wrapper(struct spi_device *spi, - struct spi_flash_read_message *msg) -{ - int ret; - struct spi_mem_op op = SPI_MEM_OP(SPI_MEM_OP_CMD(msg->read_opcode, 1), - SPI_MEM_OP_ADDR(msg->addr_width, - msg->from, - msg->addr_nbits), - SPI_MEM_OP_DUMMY(msg->dummy_bytes, - msg->addr_nbits), - SPI_MEM_OP_DATA_IN(msg->len, - msg->buf, - msg->data_nbits)); - - msg->retlen = 0; - ret = bcm_qspi_exec_mem_op(spi, &op); - if (!ret) - msg->retlen = msg->len; - - return ret; -} - static void bcm_qspi_cleanup(struct spi_device *spi) { struct bcm_qspi_parms *xp = spi_get_ctldata(spi); @@ -1214,7 +1187,7 @@ static void bcm_qspi_hw_uninit(struct bcm_qspi *qspi) } static const struct spi_controller_mem_ops bcm_qspi_mem_ops = { - .exec_op = bcm_qspi_exec_mem_op_wrapper, + .exec_op = bcm_qspi_exec_mem_op, }; static const struct of_device_id bcm_qspi_of_match[] = { @@ -1259,7 +1232,6 @@ int bcm_qspi_probe(struct platform_device *pdev, master->mode_bits = SPI_CPHA | SPI_CPOL | SPI_RX_DUAL | SPI_RX_QUAD; master->setup = bcm_qspi_setup; master->transfer_one = bcm_qspi_transfer_one; - master->spi_flash_read = bcm_qspi_flash_read_wrapper; master->mem_ops = &bcm_qspi_mem_ops; master->cleanup = bcm_qspi_cleanup; master->dev.of_node = dev->of_node; diff --git a/drivers/spi/spi-bcm53xx.c b/drivers/spi/spi-bcm53xx.c index 016059d3160b..a5fcd186dad8 100644 --- a/drivers/spi/spi-bcm53xx.c +++ b/drivers/spi/spi-bcm53xx.c @@ -289,22 +289,6 @@ static const struct spi_controller_mem_ops bcm53xxspi_mem_ops = { .exec_op = bcm53xxspi_exec_mem_op, }; -static int bcm53xxspi_flash_read(struct spi_device *spi, - struct spi_flash_read_message *msg) -{ - struct bcm53xxspi *b53spi = spi_master_get_devdata(spi->master); - int ret = 0; - - if (msg->from + msg->len > BCM53XXSPI_FLASH_WINDOW) - return -EINVAL; - - bcm53xxspi_enable_bspi(b53spi); - memcpy_fromio(msg->buf, b53spi->mmio_base + msg->from, msg->len); - msg->retlen = msg->len; - - return ret; -} - /************************************************** * BCMA **************************************************/ @@ -343,10 +327,8 @@ static int bcm53xxspi_bcma_probe(struct bcma_device *core) master->dev.of_node = dev->of_node; master->transfer_one = bcm53xxspi_transfer_one; - if (b53spi->mmio_base) { + if (b53spi->mmio_base) master->mem_ops = &bcm53xxspi_mem_ops; - master->spi_flash_read = bcm53xxspi_flash_read; - } bcma_set_drvdata(core, b53spi); diff --git a/drivers/spi/spi-ti-qspi.c b/drivers/spi/spi-ti-qspi.c index a37db01447a7..694902dd6f70 100644 --- a/drivers/spi/spi-ti-qspi.c +++ b/drivers/spi/spi-ti-qspi.c @@ -531,44 +531,6 @@ static void ti_qspi_setup_mmap_read(struct spi_device *spi, u8 opcode, QSPI_SPI_SETUP_REG(spi->chip_select)); } -static bool ti_qspi_spi_flash_can_dma(struct spi_device *spi, - struct spi_flash_read_message *msg) -{ - return virt_addr_valid(msg->buf); -} - -static int ti_qspi_spi_flash_read(struct spi_device *spi, - struct spi_flash_read_message *msg) -{ - struct ti_qspi *qspi = spi_master_get_devdata(spi->master); - int ret = 0; - - mutex_lock(&qspi->list_lock); - - if (!qspi->mmap_enabled) - ti_qspi_enable_memory_map(spi); - ti_qspi_setup_mmap_read(spi, msg->read_opcode, msg->data_nbits, - msg->addr_width, msg->dummy_bytes); - - if (qspi->rx_chan) { - if (msg->cur_msg_mapped) - ret = ti_qspi_dma_xfer_sg(qspi, msg->rx_sg, msg->from); - else - ret = ti_qspi_dma_bounce_buffer(qspi, msg->from, - msg->buf, msg->len); - if (ret) - goto err_unlock; - } else { - memcpy_fromio(msg->buf, qspi->mmap_base + msg->from, msg->len); - } - msg->retlen = msg->len; - -err_unlock: - mutex_unlock(&qspi->list_lock); - - return ret; -} - static int ti_qspi_exec_mem_op(struct spi_mem *mem, const struct spi_mem_op *op) { @@ -727,7 +689,6 @@ static int ti_qspi_probe(struct platform_device *pdev) master->dev.of_node = pdev->dev.of_node; master->bits_per_word_mask = SPI_BPW_MASK(32) | SPI_BPW_MASK(16) | SPI_BPW_MASK(8); - master->spi_flash_read = ti_qspi_spi_flash_read; master->mem_ops = &ti_qspi_mem_ops; if (!of_property_read_u32(np, "num-cs", &num_cs)) @@ -826,7 +787,6 @@ static int ti_qspi_probe(struct platform_device *pdev) dma_release_channel(qspi->rx_chan); goto no_dma; } - master->spi_flash_can_dma = ti_qspi_spi_flash_can_dma; master->dma_rx = qspi->rx_chan; init_completion(&qspi->transfer_complete); if (res_mmap) @@ -841,7 +801,6 @@ static int ti_qspi_probe(struct platform_device *pdev) "mmap failed with error %ld using PIO mode\n", PTR_ERR(qspi->mmap_base)); qspi->mmap_base = NULL; - master->spi_flash_read = NULL; master->mem_ops = NULL; } } diff --git a/drivers/spi/spi.c b/drivers/spi/spi.c index 4961a5e91941..6a5a8f1bcc83 100644 --- a/drivers/spi/spi.c +++ b/drivers/spi/spi.c @@ -3053,63 +3053,6 @@ int spi_async_locked(struct spi_device *spi, struct spi_message *message) } EXPORT_SYMBOL_GPL(spi_async_locked); - -int spi_flash_read(struct spi_device *spi, - struct spi_flash_read_message *msg) - -{ - struct spi_controller *master = spi->controller; - struct device *rx_dev = NULL; - int ret; - - if ((msg->opcode_nbits == SPI_NBITS_DUAL || - msg->addr_nbits == SPI_NBITS_DUAL) && - !(spi->mode & (SPI_TX_DUAL | SPI_TX_QUAD))) - return -EINVAL; - if ((msg->opcode_nbits == SPI_NBITS_QUAD || - msg->addr_nbits == SPI_NBITS_QUAD) && - !(spi->mode & SPI_TX_QUAD)) - return -EINVAL; - if (msg->data_nbits == SPI_NBITS_DUAL && - !(spi->mode & (SPI_RX_DUAL | SPI_RX_QUAD))) - return -EINVAL; - if (msg->data_nbits == SPI_NBITS_QUAD && - !(spi->mode & SPI_RX_QUAD)) - return -EINVAL; - - if (master->auto_runtime_pm) { - ret = pm_runtime_get_sync(master->dev.parent); - if (ret < 0) { - dev_err(&master->dev, "Failed to power device: %d\n", - ret); - return ret; - } - } - - mutex_lock(&master->bus_lock_mutex); - mutex_lock(&master->io_mutex); - if (master->dma_rx && master->spi_flash_can_dma(spi, msg)) { - rx_dev = master->dma_rx->device->dev; - ret = spi_map_buf(master, rx_dev, &msg->rx_sg, - msg->buf, msg->len, - DMA_FROM_DEVICE); - if (!ret) - msg->cur_msg_mapped = true; - } - ret = master->spi_flash_read(spi, msg); - if (msg->cur_msg_mapped) - spi_unmap_buf(master, rx_dev, &msg->rx_sg, - DMA_FROM_DEVICE); - mutex_unlock(&master->io_mutex); - mutex_unlock(&master->bus_lock_mutex); - - if (master->auto_runtime_pm) - pm_runtime_put(master->dev.parent); - - return ret; -} -EXPORT_SYMBOL_GPL(spi_flash_read); - /*-------------------------------------------------------------------------*/ /* Utility methods for SPI protocol drivers, layered on diff --git a/include/linux/spi/spi.h b/include/linux/spi/spi.h index fb247a26fed9..9e96de7a2096 100644 --- a/include/linux/spi/spi.h +++ b/include/linux/spi/spi.h @@ -27,7 +27,6 @@ struct dma_chan; struct property_entry; struct spi_controller; struct spi_transfer; -struct spi_flash_read_message; struct spi_controller_mem_ops; /* @@ -383,11 +382,6 @@ static inline void spi_unregister_driver(struct spi_driver *sdrv) * controller has native support for memory like operations. * @unprepare_message: undo any work done by prepare_message(). * @slave_abort: abort the ongoing transfer request on an SPI slave controller - * @spi_flash_read: to support spi-controller hardwares that provide - * accelerated interface to read from flash devices. - * @spi_flash_can_dma: analogous to can_dma() interface, but for - * controllers implementing spi_flash_read. - * @flash_read_supported: spi device supports flash read * @cs_gpios: Array of GPIOs to use as chip select lines; one per CS * number. Any individual value may be -ENOENT for CS lines that * are not GPIOs (driven by the SPI controller itself). @@ -553,11 +547,6 @@ struct spi_controller { int (*unprepare_message)(struct spi_controller *ctlr, struct spi_message *message); int (*slave_abort)(struct spi_controller *ctlr); - int (*spi_flash_read)(struct spi_device *spi, - struct spi_flash_read_message *msg); - bool (*spi_flash_can_dma)(struct spi_device *spi, - struct spi_flash_read_message *msg); - bool (*flash_read_supported)(struct spi_device *spi); /* * These hooks are for drivers that use a generic implementation @@ -1218,48 +1207,6 @@ static inline ssize_t spi_w8r16be(struct spi_device *spi, u8 cmd) return be16_to_cpu(result); } -/** - * struct spi_flash_read_message - flash specific information for - * spi-masters that provide accelerated flash read interfaces - * @buf: buffer to read data - * @from: offset within the flash from where data is to be read - * @len: length of data to be read - * @retlen: actual length of data read - * @read_opcode: read_opcode to be used to communicate with flash - * @addr_width: number of address bytes - * @dummy_bytes: number of dummy bytes - * @opcode_nbits: number of lines to send opcode - * @addr_nbits: number of lines to send address - * @data_nbits: number of lines for data - * @rx_sg: Scatterlist for receive data read from flash - * @cur_msg_mapped: message has been mapped for DMA - */ -struct spi_flash_read_message { - void *buf; - loff_t from; - size_t len; - size_t retlen; - u8 read_opcode; - u8 addr_width; - u8 dummy_bytes; - u8 opcode_nbits; - u8 addr_nbits; - u8 data_nbits; - struct sg_table rx_sg; - bool cur_msg_mapped; -}; - -/* SPI core interface for flash read support */ -static inline bool spi_flash_read_supported(struct spi_device *spi) -{ - return spi->controller->spi_flash_read && - (!spi->controller->flash_read_supported || - spi->controller->flash_read_supported(spi)); -} - -int spi_flash_read(struct spi_device *spi, - struct spi_flash_read_message *msg); - /*---------------------------------------------------------------------------*/ /*