From patchwork Thu Nov 18 06:33:46 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Martin Kepplinger X-Patchwork-Id: 78598 Received: from vger.kernel.org ([23.128.96.18]) by www.linuxtv.org with esmtp (Exim 4.92) (envelope-from ) id 1mnb08-000aVA-VG; Thu, 18 Nov 2021 06:34:29 +0000 Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S243398AbhKRGhY (ORCPT + 1 other); Thu, 18 Nov 2021 01:37:24 -0500 Received: from comms.puri.sm ([159.203.221.185]:44162 "EHLO comms.puri.sm" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S242471AbhKRGhX (ORCPT ); Thu, 18 Nov 2021 01:37:23 -0500 Received: from localhost (localhost [127.0.0.1]) by comms.puri.sm (Postfix) with ESMTP id 8FE9ADF90B; Wed, 17 Nov 2021 22:34:23 -0800 (PST) Received: from comms.puri.sm ([127.0.0.1]) by localhost (comms.puri.sm [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id IPlzYpn1Qo5L; Wed, 17 Nov 2021 22:34:22 -0800 (PST) From: Martin Kepplinger To: martin.kepplinger@puri.sm, laurent.pinchart@ideasonboard.com, mchehab@kernel.org Cc: devicetree@vger.kernel.org, kernel@pengutronix.de, kernel@puri.sm, linux-arm-kernel@lists.infradead.org, linux-imx@nxp.com, linux-kernel@vger.kernel.org, linux-media@vger.kernel.org, rmfrfs@gmail.com, robh@kernel.org, shawnguo@kernel.org Subject: [PATCH v2 1/2] media: imx: imx7-media-csi: add support for imx8mq Date: Thu, 18 Nov 2021 07:33:46 +0100 Message-Id: <20211118063347.3370678-1-martin.kepplinger@puri.sm> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-media@vger.kernel.org X-LSpam-Score: -2.4 (--) X-LSpam-Report: No, score=-2.4 required=5.0 tests=BAYES_00=-1.9,HEADER_FROM_DIFFERENT_DOMAINS=0.5,MAILING_LIST_MULTI=-1 autolearn=ham autolearn_force=no Modeled after the NXP driver mx6s_capture.c that this driver is based on, imx8mq needs different settings for the baseaddr_switch mechanism. Define the needed bits and set that for imx8mq. Without these settings, the system will "sometimes" hang completely when starting to stream (the interrupt will never be called). Signed-off-by: Martin Kepplinger Acked-by: Rui Miguel Silva Reported-by: kernel test robot --- revision history ---------------- v2: (thank you Rui and Laurent) * rename function and enum * remove unrealted newline * add Laurents reviewed tag to the bindings patch v1: https://lore.kernel.org/linux-media/20211117092710.3084034-1-martin.kepplinger@puri.sm/T/#t drivers/staging/media/imx/imx7-media-csi.c | 32 ++++++++++++++++++++-- 1 file changed, 30 insertions(+), 2 deletions(-) diff --git a/drivers/staging/media/imx/imx7-media-csi.c b/drivers/staging/media/imx/imx7-media-csi.c index 2288dadb2683..1f3d9e27270d 100644 --- a/drivers/staging/media/imx/imx7-media-csi.c +++ b/drivers/staging/media/imx/imx7-media-csi.c @@ -12,6 +12,7 @@ #include #include #include +#include #include #include #include @@ -122,6 +123,10 @@ #define BIT_DATA_FROM_MIPI BIT(22) #define BIT_MIPI_YU_SWAP BIT(21) #define BIT_MIPI_DOUBLE_CMPNT BIT(20) +#define BIT_MASK_OPTION_FIRST_FRAME (0 << 18) +#define BIT_MASK_OPTION_CSI_EN (1 << 18) +#define BIT_MASK_OPTION_SECOND_FRAME (2 << 18) +#define BIT_MASK_OPTION_ON_DATA (3 << 18) #define BIT_BASEADDR_CHG_ERR_EN BIT(9) #define BIT_BASEADDR_SWITCH_SEL BIT(5) #define BIT_BASEADDR_SWITCH_EN BIT(4) @@ -154,6 +159,11 @@ #define CSI_CSICR18 0x48 #define CSI_CSICR19 0x4c +enum imx_csi_model { + IMX7_CSI_IMX7 = 0, + IMX7_CSI_IMX8MQ, +}; + struct imx7_csi { struct device *dev; struct v4l2_subdev sd; @@ -189,6 +199,8 @@ struct imx7_csi { bool is_csi2; struct completion last_eof_completion; + + enum imx_csi_model model; }; static struct imx7_csi * @@ -537,6 +549,16 @@ static void imx7_csi_deinit(struct imx7_csi *csi, clk_disable_unprepare(csi->mclk); } +static void imx7_csi_baseaddr_switch_on_second_frame(struct imx7_csi *csi) +{ + u32 cr18 = imx7_csi_reg_read(csi, CSI_CSICR18); + + cr18 |= BIT_BASEADDR_SWITCH_EN | BIT_BASEADDR_SWITCH_SEL | + BIT_BASEADDR_CHG_ERR_EN; + cr18 |= BIT_MASK_OPTION_SECOND_FRAME; + imx7_csi_reg_write(csi, cr18, CSI_CSICR18); +} + static void imx7_csi_enable(struct imx7_csi *csi) { /* Clear the Rx FIFO and reflash the DMA controller. */ @@ -552,6 +574,9 @@ static void imx7_csi_enable(struct imx7_csi *csi) /* Enable the RxFIFO DMA and the CSI. */ imx7_csi_dmareq_rff_enable(csi); imx7_csi_hw_enable(csi); + + if (csi->model == IMX7_CSI_IMX8MQ) + imx7_csi_baseaddr_switch_on_second_frame(csi); } static void imx7_csi_disable(struct imx7_csi *csi) @@ -1155,6 +1180,8 @@ static int imx7_csi_probe(struct platform_device *pdev) if (IS_ERR(csi->regbase)) return PTR_ERR(csi->regbase); + csi->model = (enum imx_csi_model)of_device_get_match_data(&pdev->dev); + spin_lock_init(&csi->irqlock); mutex_init(&csi->lock); @@ -1249,8 +1276,9 @@ static int imx7_csi_remove(struct platform_device *pdev) } static const struct of_device_id imx7_csi_of_match[] = { - { .compatible = "fsl,imx7-csi" }, - { .compatible = "fsl,imx6ul-csi" }, + { .compatible = "fsl,imx8mq-csi", .data = (void *)IMX7_CSI_IMX8MQ }, + { .compatible = "fsl,imx7-csi", .data = (void *)IMX7_CSI_IMX7 }, + { .compatible = "fsl,imx6ul-csi", .data = (void *)IMX7_CSI_IMX7 }, { }, }; MODULE_DEVICE_TABLE(of, imx7_csi_of_match); From patchwork Thu Nov 18 06:33:47 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Martin Kepplinger X-Patchwork-Id: 78599 Received: from vger.kernel.org ([23.128.96.18]) by www.linuxtv.org with esmtp (Exim 4.92) (envelope-from ) id 1mnb0d-000aVy-Mp; Thu, 18 Nov 2021 06:34:59 +0000 Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S243407AbhKRGh5 (ORCPT + 1 other); Thu, 18 Nov 2021 01:37:57 -0500 Received: from comms.puri.sm ([159.203.221.185]:44238 "EHLO comms.puri.sm" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S242471AbhKRGh4 (ORCPT ); Thu, 18 Nov 2021 01:37:56 -0500 Received: from localhost (localhost [127.0.0.1]) by comms.puri.sm (Postfix) with ESMTP id AE80ADF722; Wed, 17 Nov 2021 22:34:26 -0800 (PST) Received: from comms.puri.sm ([127.0.0.1]) by localhost (comms.puri.sm [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id lI4L4XnOkeEm; Wed, 17 Nov 2021 22:34:26 -0800 (PST) From: Martin Kepplinger To: martin.kepplinger@puri.sm, laurent.pinchart@ideasonboard.com, mchehab@kernel.org Cc: devicetree@vger.kernel.org, kernel@pengutronix.de, kernel@puri.sm, linux-arm-kernel@lists.infradead.org, linux-imx@nxp.com, linux-kernel@vger.kernel.org, linux-media@vger.kernel.org, rmfrfs@gmail.com, robh@kernel.org, shawnguo@kernel.org Subject: [PATCH v2 2/2] dt-bindings: media: document imx8mq support for imx7-csi Date: Thu, 18 Nov 2021 07:33:47 +0100 Message-Id: <20211118063347.3370678-2-martin.kepplinger@puri.sm> In-Reply-To: <20211118063347.3370678-1-martin.kepplinger@puri.sm> References: <20211118063347.3370678-1-martin.kepplinger@puri.sm> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-media@vger.kernel.org X-LSpam-Score: -2.4 (--) X-LSpam-Report: No, score=-2.4 required=5.0 tests=BAYES_00=-1.9,HEADER_FROM_DIFFERENT_DOMAINS=0.5,MAILING_LIST_MULTI=-1 autolearn=ham autolearn_force=no Add the fsl,imx8mq-csi compatible string to the bindings for nxp,imx7-csi. The i.MX8MQ SoC contains the same CSI bridge controller as the i.MX7. Signed-off-by: Martin Kepplinger Reviewed-by: Laurent Pinchart --- Documentation/devicetree/bindings/media/nxp,imx7-csi.yaml | 1 + 1 file changed, 1 insertion(+) diff --git a/Documentation/devicetree/bindings/media/nxp,imx7-csi.yaml b/Documentation/devicetree/bindings/media/nxp,imx7-csi.yaml index 5922a2795167..4f7b78265336 100644 --- a/Documentation/devicetree/bindings/media/nxp,imx7-csi.yaml +++ b/Documentation/devicetree/bindings/media/nxp,imx7-csi.yaml @@ -17,6 +17,7 @@ properties: compatible: oneOf: - enum: + - fsl,imx8mq-csi - fsl,imx7-csi - fsl,imx6ul-csi - items: