From patchwork Mon Nov 5 12:06:38 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Mark Brown X-Patchwork-Id: 10668059 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 2935A15A6 for ; Mon, 5 Nov 2018 12:07:20 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 13C8729753 for ; Mon, 5 Nov 2018 12:07:20 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 083042975C; Mon, 5 Nov 2018 12:07:20 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-7.7 required=2.0 tests=BAYES_00,DKIM_INVALID, DKIM_SIGNED,MAILING_LIST_MULTI,RCVD_IN_DNSWL_HI autolearn=ham version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 4548829753 for ; Mon, 5 Nov 2018 12:07:19 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727820AbeKEV0P (ORCPT ); Mon, 5 Nov 2018 16:26:15 -0500 Received: from heliosphere.sirena.org.uk ([172.104.155.198]:53512 "EHLO heliosphere.sirena.org.uk" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728094AbeKEV0O (ORCPT ); Mon, 5 Nov 2018 16:26:14 -0500 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=sirena.org.uk; s=20170815-heliosphere; h=Date:Message-Id:In-Reply-To: Subject:Cc:To:From:Sender:Reply-To:MIME-Version:Content-Type: Content-Transfer-Encoding:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:References: List-Id:List-Help:List-Unsubscribe:List-Subscribe:List-Post:List-Owner: List-Archive; bh=4sxaFDv5aquQXjqRzUyZAJOPGQhGTUdSwPoRu5j/bhY=; b=j8uRUougK1ee bntU0AdtoU76q+04Gmz97mRhbkFUa5Yn43a0aDXFsjfqJUsll1VnPFY4jFirVv2C0xAyWVJBzWAgW BJ2PRpSiiHxkx6G1x4Gs7Mtn2cxl4pd2gSYtCh4YKLxyY12nCC3TR/5CjeSA8T6qzgurL0TOAB8SR 4yNdA=; Received: from cpc102320-sgyl38-2-0-cust46.18-2.cable.virginm.net ([82.37.168.47] helo=debutante.sirena.org.uk) by heliosphere.sirena.org.uk with esmtpa (Exim 4.89) (envelope-from ) id 1gJdeV-0008Nx-W9; Mon, 05 Nov 2018 12:06:44 +0000 Received: by debutante.sirena.org.uk (Postfix, from userid 1000) id A80121124D98; Mon, 5 Nov 2018 12:06:38 +0000 (GMT) From: Mark Brown To: Emil Renner Berthing Cc: Heiko Stuebner , Mark Brown , linux-spi@vger.kernel.org, Addy Ke , Mark Brown , Heiko Stuebner , linux-arm-kernel@lists.infradead.org, linux-rockchip@lists.infradead.org, linux-kernel@vger.kernel.org, linux-spi@vger.kernel.org Subject: Applied "spi: rockchip: read transfer info directly" to the spi tree In-Reply-To: <20181031105711.19575-7-esmil@mailme.dk> Message-Id: <20181105120638.A80121124D98@debutante.sirena.org.uk> Date: Mon, 5 Nov 2018 12:06:38 +0000 (GMT) Sender: linux-spi-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-spi@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP The patch spi: rockchip: read transfer info directly has been applied to the spi tree at https://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi.git All being well this means that it will be integrated into the linux-next tree (usually sometime in the next 24 hours) and sent to Linus during the next merge window (or sooner if it is a bug fix), however if problems are discovered then the patch may be dropped or reverted. You may get further e-mails resulting from automated or manual testing and review of the tree, please engage with people reporting problems and send followup patches addressing any issues that are reported if needed. If any updates are required or you are submitting further changes they should be sent as incremental updates against current git, existing patches will not be replaced. Please add any relevant lists and maintainers to the CCs when replying to this mail. Thanks, Mark From fc1ad8ee33480bdf0493b54907b74538bf9b75b8 Mon Sep 17 00:00:00 2001 From: Emil Renner Berthing Date: Wed, 31 Oct 2018 11:57:03 +0100 Subject: [PATCH] spi: rockchip: read transfer info directly Just read transfer info directly from the spi device and transfer structures rather than storing it in driver data first. Signed-off-by: Emil Renner Berthing Tested-by: Heiko Stuebner Signed-off-by: Mark Brown --- drivers/spi/spi-rockchip.c | 70 +++++++++++++------------------------- 1 file changed, 24 insertions(+), 46 deletions(-) diff --git a/drivers/spi/spi-rockchip.c b/drivers/spi/spi-rockchip.c index 5729e6071729..5edc51820d35 100644 --- a/drivers/spi/spi-rockchip.c +++ b/drivers/spi/spi-rockchip.c @@ -178,12 +178,8 @@ struct rockchip_spi { /* max bus freq supported */ u32 max_freq; - u16 mode; - u8 tmode; - u8 bpw; u8 n_bytes; u32 rsd_nsecs; - unsigned len; u32 speed; const void *tx; @@ -194,8 +190,6 @@ struct rockchip_spi { bool cs_asserted[ROCKCHIP_SPI_MAX_CS_NUM]; bool use_dma; - struct sg_table tx_sg; - struct sg_table rx_sg; struct rockchip_spi_dma_data dma_rx; struct rockchip_spi_dma_data dma_tx; }; @@ -282,17 +276,6 @@ static void rockchip_spi_set_cs(struct spi_device *spi, bool enable) rs->cs_asserted[spi->chip_select] = cs_asserted; } -static int rockchip_spi_prepare_message(struct spi_master *master, - struct spi_message *msg) -{ - struct rockchip_spi *rs = spi_master_get_devdata(master); - struct spi_device *spi = msg->spi; - - rs->mode = spi->mode; - - return 0; -} - static void rockchip_spi_handle_err(struct spi_master *master, struct spi_message *msg) { @@ -397,14 +380,15 @@ static void rockchip_spi_dma_txcb(void *data) spi_finalize_current_transfer(rs->master); } -static int rockchip_spi_prepare_dma(struct rockchip_spi *rs) +static int rockchip_spi_prepare_dma(struct rockchip_spi *rs, + struct spi_transfer *xfer) { struct dma_async_tx_descriptor *rxdesc, *txdesc; atomic_set(&rs->state, 0); rxdesc = NULL; - if (rs->rx) { + if (xfer->rx_buf) { struct dma_slave_config rxconf = { .direction = DMA_DEV_TO_MEM, .src_addr = rs->dma_rx.addr, @@ -416,7 +400,7 @@ static int rockchip_spi_prepare_dma(struct rockchip_spi *rs) rxdesc = dmaengine_prep_slave_sg( rs->dma_rx.ch, - rs->rx_sg.sgl, rs->rx_sg.nents, + xfer->rx_sg.sgl, xfer->rx_sg.nents, DMA_DEV_TO_MEM, DMA_PREP_INTERRUPT); if (!rxdesc) return -EINVAL; @@ -426,7 +410,7 @@ static int rockchip_spi_prepare_dma(struct rockchip_spi *rs) } txdesc = NULL; - if (rs->tx) { + if (xfer->tx_buf) { struct dma_slave_config txconf = { .direction = DMA_MEM_TO_DEV, .dst_addr = rs->dma_tx.addr, @@ -438,7 +422,7 @@ static int rockchip_spi_prepare_dma(struct rockchip_spi *rs) txdesc = dmaengine_prep_slave_sg( rs->dma_tx.ch, - rs->tx_sg.sgl, rs->tx_sg.nents, + xfer->tx_sg.sgl, xfer->tx_sg.nents, DMA_MEM_TO_DEV, DMA_PREP_INTERRUPT); if (!txdesc) { if (rxdesc) @@ -469,7 +453,8 @@ static int rockchip_spi_prepare_dma(struct rockchip_spi *rs) return 1; } -static void rockchip_spi_config(struct rockchip_spi *rs) +static void rockchip_spi_config(struct rockchip_spi *rs, + struct spi_device *spi, struct spi_transfer *xfer) { u32 div = 0; u32 dmacr = 0; @@ -481,13 +466,19 @@ static void rockchip_spi_config(struct rockchip_spi *rs) | CR0_EM_BIG << CR0_EM_OFFSET; cr0 |= (rs->n_bytes << CR0_DFS_OFFSET); - cr0 |= ((rs->mode & 0x3) << CR0_SCPH_OFFSET); - cr0 |= (rs->tmode << CR0_XFM_OFFSET); + cr0 |= (spi->mode & 0x3U) << CR0_SCPH_OFFSET; + + if (xfer->rx_buf && xfer->tx_buf) + cr0 |= CR0_XFM_TR << CR0_XFM_OFFSET; + else if (xfer->rx_buf) + cr0 |= CR0_XFM_RO << CR0_XFM_OFFSET; + else + cr0 |= CR0_XFM_TO << CR0_XFM_OFFSET; if (rs->use_dma) { - if (rs->tx) + if (xfer->tx_buf) dmacr |= TF_DMA_EN; - if (rs->rx) + if (xfer->rx_buf) dmacr |= RF_DMA_EN; } @@ -521,11 +512,11 @@ static void rockchip_spi_config(struct rockchip_spi *rs) writel_relaxed(cr0, rs->regs + ROCKCHIP_SPI_CTRLR0); if (rs->n_bytes == 1) - writel_relaxed(rs->len - 1, rs->regs + ROCKCHIP_SPI_CTRLR1); + writel_relaxed(xfer->len - 1, rs->regs + ROCKCHIP_SPI_CTRLR1); else if (rs->n_bytes == 2) - writel_relaxed((rs->len / 2) - 1, rs->regs + ROCKCHIP_SPI_CTRLR1); + writel_relaxed((xfer->len / 2) - 1, rs->regs + ROCKCHIP_SPI_CTRLR1); else - writel_relaxed((rs->len * 2) - 1, rs->regs + ROCKCHIP_SPI_CTRLR1); + writel_relaxed((xfer->len * 2) - 1, rs->regs + ROCKCHIP_SPI_CTRLR1); writel_relaxed(rs->fifo_len / 2 - 1, rs->regs + ROCKCHIP_SPI_TXFTLR); writel_relaxed(rs->fifo_len / 2 - 1, rs->regs + ROCKCHIP_SPI_RXFTLR); @@ -565,24 +556,12 @@ static int rockchip_spi_transfer_one( } rs->speed = xfer->speed_hz; - rs->bpw = xfer->bits_per_word; - rs->n_bytes = rs->bpw >> 3; + rs->n_bytes = xfer->bits_per_word >> 3; rs->tx = xfer->tx_buf; rs->tx_end = rs->tx + xfer->len; rs->rx = xfer->rx_buf; rs->rx_end = rs->rx + xfer->len; - rs->len = xfer->len; - - rs->tx_sg = xfer->tx_sg; - rs->rx_sg = xfer->rx_sg; - - if (rs->tx && rs->rx) - rs->tmode = CR0_XFM_TR; - else if (rs->tx) - rs->tmode = CR0_XFM_TO; - else if (rs->rx) - rs->tmode = CR0_XFM_RO; /* we need prepare dma before spi was enabled */ if (master->can_dma && master->can_dma(master, spi, xfer)) @@ -590,10 +569,10 @@ static int rockchip_spi_transfer_one( else rs->use_dma = false; - rockchip_spi_config(rs); + rockchip_spi_config(rs, spi, xfer); if (rs->use_dma) - return rockchip_spi_prepare_dma(rs); + return rockchip_spi_prepare_dma(rs, xfer); return rockchip_spi_pio_transfer(rs); } @@ -685,7 +664,6 @@ static int rockchip_spi_probe(struct platform_device *pdev) master->bits_per_word_mask = SPI_BPW_MASK(16) | SPI_BPW_MASK(8); master->set_cs = rockchip_spi_set_cs; - master->prepare_message = rockchip_spi_prepare_message; master->transfer_one = rockchip_spi_transfer_one; master->max_transfer_size = rockchip_spi_max_transfer_size; master->handle_err = rockchip_spi_handle_err;