From patchwork Fri Sep 25 17:57:11 2015 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Anton Bondarenko X-Patchwork-Id: 7266991 Return-Path: X-Original-To: patchwork-linux-arm@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork2.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.29.136]) by patchwork2.web.kernel.org (Postfix) with ESMTP id 39E5DBEEC1 for ; Fri, 25 Sep 2015 18:00:17 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 269A520879 for ; Fri, 25 Sep 2015 18:00:16 +0000 (UTC) Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.9]) (using TLSv1.2 with cipher AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 3043B2086E for ; Fri, 25 Sep 2015 18:00:15 +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 1ZfXGU-0006JK-GQ; Fri, 25 Sep 2015 17:58:34 +0000 Received: from relay1.mentorg.com ([192.94.38.131]) by bombadil.infradead.org with esmtp (Exim 4.80.1 #2 (Red Hat Linux)) id 1ZfXFq-0005ik-Bc for linux-arm-kernel@lists.infradead.org; Fri, 25 Sep 2015 17:57:55 +0000 Received: from svr-orw-fem-05.mgc.mentorg.com ([147.34.97.43]) by relay1.mentorg.com with esmtp id 1ZfXFX-0006kn-Qy from Anton_Bondarenko@mentor.com ; Fri, 25 Sep 2015 10:57:35 -0700 Received: from antonb-msi.world.mentorg.com (147.34.91.1) by svr-orw-fem-05.mgc.mentorg.com (147.34.97.43) with Microsoft SMTP Server (TLS) id 14.3.224.2; Fri, 25 Sep 2015 10:57:34 -0700 From: Anton Bondarenko To: Subject: [PATCH v2 4/8] spi: imx: add selection for iMX53 and iMX6 controller type Date: Fri, 25 Sep 2015 19:57:11 +0200 Message-ID: <7bd3057a58125575154fe7d8642a887efe27b469.1442923630.git.anton_bondarenko@mentor.com> X-Mailer: git-send-email 2.5.3 In-Reply-To: References: MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20150925_105754_507387_6B9E7CC3 X-CRM114-Status: GOOD ( 14.75 ) X-Spam-Score: -2.6 (--) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.20 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: muzaffar_mahmood@relay1.mentorg.com, jiada_wang@mentor.com, b38343@freescale.com, linux-kernel@vger.kernel.org, linux-spi@vger.kernel.org, linux-arm-kernel@lists.infradead.org, vladimir_zapolskiy@mentor.com Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org X-Spam-Status: No, score=-4.2 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_MED, 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 ECSPI contorller for iMX53 and iMX6 has few hardware issues in slave mode and (32*n+1) SPI word size handling comparing to iMX51. The change add possibility to detect the SPI controller is use and apply workarounds/limitations. Documentation for device tree bindings updated Signed-off-by: Anton Bondarenko --- .../devicetree/bindings/spi/fsl-imx-cspi.txt | 2 ++ drivers/spi/spi-imx.c | 36 ++++++++++++++++++++-- 2 files changed, 35 insertions(+), 3 deletions(-) diff --git a/Documentation/devicetree/bindings/spi/fsl-imx-cspi.txt b/Documentation/devicetree/bindings/spi/fsl-imx-cspi.txt index 523341a..425485f 100644 --- a/Documentation/devicetree/bindings/spi/fsl-imx-cspi.txt +++ b/Documentation/devicetree/bindings/spi/fsl-imx-cspi.txt @@ -9,6 +9,8 @@ Required properties: - "fsl,imx31-cspi" for SPI compatible with the one integrated on i.MX31 - "fsl,imx35-cspi" for SPI compatible with the one integrated on i.MX35 - "fsl,imx51-ecspi" for SPI compatible with the one integrated on i.MX51 + - "fsl,imx53-ecspi" for SPI compatible with the one integrated on i.MX53 + - "fsl,imx6q-ecspi" for SPI compatible with the one integrated on i.MX6 family - reg : Offset and length of the register set for the device - interrupts : Should contain CSPI/eCSPI interrupt - fsl,spi-num-chipselects : Contains the number of the chipselect diff --git a/drivers/spi/spi-imx.c b/drivers/spi/spi-imx.c index d9b730d..41c9cef 100644 --- a/drivers/spi/spi-imx.c +++ b/drivers/spi/spi-imx.c @@ -72,7 +72,8 @@ enum spi_imx_devtype { IMX27_CSPI, IMX31_CSPI, IMX35_CSPI, /* CSPI on all i.mx except above */ - IMX51_ECSPI, /* ECSPI on i.mx51 and later */ + IMX51_ECSPI, /* ECSPI on i.mx51 */ + IMX53_ECSPI, /* ECSPI on i.mx53 and later */ }; struct spi_imx_data; @@ -129,9 +130,20 @@ static inline int is_imx35_cspi(struct spi_imx_data *d) return d->devtype_data->devtype == IMX35_CSPI; } +static inline int is_imx53_ecspi(struct spi_imx_data *d) +{ + return d->devtype_data->devtype == IMX53_ECSPI; +} + +static inline int is_imx5x_ecspi(struct spi_imx_data *d) +{ + return d->devtype_data->devtype == IMX51_ECSPI || + d->devtype_data->devtype == IMX53_ECSPI; +} + static inline unsigned spi_imx_get_fifosize(struct spi_imx_data *d) { - return (d->devtype_data->devtype == IMX51_ECSPI) ? 64 : 8; + return is_imx5x_ecspi(d) ? 64 : 8; } #define MXC_SPI_BUF_RX(type) \ @@ -680,6 +692,16 @@ static struct spi_imx_devtype_data imx51_ecspi_devtype_data = { .devtype = IMX51_ECSPI, }; +static struct spi_imx_devtype_data imx53_ecspi_devtype_data = { + /* i.mx53 and later ecspi shares the functions with i.mx51 one */ + .intctrl = mx51_ecspi_intctrl, + .config = mx51_ecspi_config, + .trigger = mx51_ecspi_trigger, + .rx_available = mx51_ecspi_rx_available, + .reset = mx51_ecspi_reset, + .devtype = IMX53_ECSPI, +}; + static const struct platform_device_id spi_imx_devtype[] = { { .name = "imx1-cspi", @@ -697,6 +719,12 @@ static const struct platform_device_id spi_imx_devtype[] = { .name = "imx35-cspi", .driver_data = (kernel_ulong_t) &imx35_cspi_devtype_data, }, { + .name = "imx53-ecspi", + .driver_data = (kernel_ulong_t)&imx53_ecspi_devtype_data, + }, { + .name = "imx6q-ecspi", + .driver_data = (kernel_ulong_t)&imx53_ecspi_devtype_data, + }, { .name = "imx51-ecspi", .driver_data = (kernel_ulong_t) &imx51_ecspi_devtype_data, }, { @@ -710,6 +738,8 @@ static const struct of_device_id spi_imx_dt_ids[] = { { .compatible = "fsl,imx27-cspi", .data = &imx27_cspi_devtype_data, }, { .compatible = "fsl,imx31-cspi", .data = &imx31_cspi_devtype_data, }, { .compatible = "fsl,imx35-cspi", .data = &imx35_cspi_devtype_data, }, + { .compatible = "fsl,imx53-ecspi", .data = &imx53_ecspi_devtype_data, }, + { .compatible = "fsl,imx6q-ecspi", .data = &imx53_ecspi_devtype_data, }, { .compatible = "fsl,imx51-ecspi", .data = &imx51_ecspi_devtype_data, }, { /* sentinel */ } }; @@ -1299,7 +1329,7 @@ static int spi_imx_probe(struct platform_device *pdev) * Only validated on i.mx6 now, can remove the constrain if validated on * other chips. */ - if (spi_imx->devtype_data == &imx51_ecspi_devtype_data && + if (is_imx5x_ecspi(spi_imx) && spi_imx_sdma_init(&pdev->dev, spi_imx, master)) dev_err(&pdev->dev, "dma setup error,use pio instead\n");