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[209.132.180.67]) by mx.google.com with ESMTP id t8si594166plo.436.2019.06.11.01.18.11; Tue, 11 Jun 2019 01:18:25 -0700 (PDT) Received-SPF: pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) client-ip=209.132.180.67; Authentication-Results: mx.google.com; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2404725AbfFKIQz (ORCPT + 99 others); Tue, 11 Jun 2019 04:16:55 -0400 Received: from 8.mo178.mail-out.ovh.net ([46.105.74.227]:50087 "EHLO 8.mo178.mail-out.ovh.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2404618AbfFKIQy (ORCPT ); Tue, 11 Jun 2019 04:16:54 -0400 Received: from player718.ha.ovh.net (unknown [10.108.35.158]) by mo178.mail-out.ovh.net (Postfix) with ESMTP id EA2B26C6BF for ; Tue, 11 Jun 2019 10:16:51 +0200 (CEST) Received: from armadeus.com (lfbn-1-7591-179.w90-126.abo.wanadoo.fr [90.126.248.179]) (Authenticated sender: sebastien.szymanski@armadeus.com) by player718.ha.ovh.net (Postfix) with ESMTPSA id D1BE369E1F92; Tue, 11 Jun 2019 08:16:33 +0000 (UTC) Subject: Re: [PATCH v2 2/3] media: imx7-media-csi: add i.MX6UL support To: Rui Miguel Silva Cc: devel@driverdev.osuosl.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, devicetree@vger.kernel.org, linux-media@vger.kernel.org, Shawn Guo , Mauro Carvalho Chehab , Greg Kroah-Hartman , Philipp Zabel , Steve Longerbeam , NXP Linux Team , Fabio Estevam , Pengutronix Kernel Team , Sascha Hauer , Mark Rutland , Rob Herring References: <20190606153825.8183-1-sebastien.szymanski@armadeus.com> <20190606153825.8183-2-sebastien.szymanski@armadeus.com> From: =?UTF-8?Q?S=c3=a9bastien_Szymanski?= Openpgp: preference=signencrypt Message-ID: <722336d1-c7f7-1796-95d5-7bba1fac7968@armadeus.com> Date: Tue, 11 Jun 2019 10:16:37 +0200 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:60.0) Gecko/20100101 Thunderbird/60.7.0 MIME-Version: 1.0 In-Reply-To: Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 8bit X-Ovh-Tracer-Id: 7166071435811902533 X-VR-SPAMSTATE: OK X-VR-SPAMSCORE: -100 X-VR-SPAMCAUSE: gggruggvucftvghtrhhoucdtuddrgeduuddrudehgedgtdduucetufdoteggodetrfdotffvucfrrhhofhhilhgvmecuqfggjfdpvefjgfevmfevgfenuceurghilhhouhhtmecuhedttdenucesvcftvggtihhpihgvnhhtshculddquddttddm Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hi Rui, thanks for the review! On 6/10/19 12:28 PM, Rui Miguel Silva wrote: > Hi Sebastien, > Thanks for the patch. > > On Thu 06 Jun 2019 at 16:38, Sébastien Szymanski wrote: >> i.MX7 and i.MX6UL/L have the same CSI controller. So add i.MX6UL/L support >> to imx7-media-csi driver. >> >> Signed-off-by: Sébastien Szymanski >> --- >> >> Changes for v2: >> - rebase on top of linuxtv/master >> - mention i.MX6UL/L in header and Kconfig help text >> - rename csi_type to csi_soc_id >> >> drivers/staging/media/imx/Kconfig | 4 +- >> drivers/staging/media/imx/imx7-media-csi.c | 62 ++++++++++++++++------ >> 2 files changed, 49 insertions(+), 17 deletions(-) >> >> diff --git a/drivers/staging/media/imx/Kconfig b/drivers/staging/media/imx/Kconfig >> index ad3d7df6bb3c..8b6dc42c39e0 100644 >> --- a/drivers/staging/media/imx/Kconfig >> +++ b/drivers/staging/media/imx/Kconfig >> @@ -22,11 +22,11 @@ config VIDEO_IMX_CSI >> A video4linux camera sensor interface driver for i.MX5/6. >> >> config VIDEO_IMX7_CSI >> - tristate "i.MX7 Camera Sensor Interface driver" >> + tristate "i.MX6UL/L / i.MX7 Camera Sensor Interface driver" >> depends on VIDEO_IMX_MEDIA && VIDEO_DEV && I2C >> default y >> help >> Enable support for video4linux camera sensor interface driver for >> - i.MX7. >> + i.MX6UL/L or i.MX7. >> endmenu >> endif >> diff --git a/drivers/staging/media/imx/imx7-media-csi.c b/drivers/staging/media/imx/imx7-media-csi.c >> index 9101566f3f67..902bdce594cf 100644 >> --- a/drivers/staging/media/imx/imx7-media-csi.c >> +++ b/drivers/staging/media/imx/imx7-media-csi.c >> @@ -1,6 +1,6 @@ >> // SPDX-License-Identifier: GPL-2.0 >> /* >> - * V4L2 Capture CSI Subdev for Freescale i.MX7 SOC >> + * V4L2 Capture CSI Subdev for Freescale i.MX6UL/L / i.MX7 SOC >> * >> * Copyright (c) 2019 Linaro Ltd >> * >> @@ -152,6 +152,11 @@ >> #define CSI_CSICR18 0x48 >> #define CSI_CSICR19 0x4c >> >> +enum csi_soc_id { >> + IMX7, >> + IMX6UL >> +}; >> + >> struct imx7_csi { >> struct device *dev; >> struct v4l2_subdev sd; >> @@ -191,6 +196,7 @@ struct imx7_csi { >> bool is_init; >> bool is_streaming; >> bool is_csi2; >> + enum csi_soc_id soc_id; >> >> struct completion last_eof_completion; >> }; >> @@ -548,6 +554,14 @@ static int imx7_csi_pad_link_validate(struct v4l2_subdev *sd, >> if (ret) >> return ret; >> >> + if (csi->soc_id == IMX6UL) { >> + mutex_lock(&csi->lock); >> + csi->is_csi2 = false; >> + mutex_unlock(&csi->lock); >> + >> + return 0; >> + } >> + >> ret = imx7_csi_get_upstream_endpoint(csi, &upstream_ep, true); >> if (ret) { >> v4l2_err(&csi->sd, "failed to find upstream endpoint\n"); >> @@ -757,6 +771,7 @@ static int imx7_csi_configure(struct imx7_csi *csi) >> struct v4l2_pix_format *out_pix = &vdev->fmt.fmt.pix; >> __u32 in_code = csi->format_mbus[IMX7_CSI_PAD_SINK].code; >> u32 cr1, cr18; >> + int width = out_pix->width; >> >> if (out_pix->field == V4L2_FIELD_INTERLACED) { >> imx7_csi_deinterlace_enable(csi, true); >> @@ -766,15 +781,27 @@ static int imx7_csi_configure(struct imx7_csi *csi) >> imx7_csi_buf_stride_set(csi, 0); >> } >> >> - imx7_csi_set_imagpara(csi, out_pix->width, out_pix->height); >> + cr18 = imx7_csi_reg_read(csi, CSI_CSICR18); >> + >> + if (!csi->is_csi2) { >> + if (out_pix->pixelformat == V4L2_PIX_FMT_UYVY || >> + out_pix->pixelformat == V4L2_PIX_FMT_YUYV) >> + width *= 2; >> + >> + imx7_csi_set_imagpara(csi, width, out_pix->height); >> + >> + cr18 |= (BIT_BASEADDR_SWITCH_EN | BIT_BASEADDR_SWITCH_SEL | >> + BIT_BASEADDR_CHG_ERR_EN); >> + imx7_csi_reg_write(csi, cr18, CSI_CSICR18); >> >> - if (!csi->is_csi2) >> return 0; >> + } >> + >> + imx7_csi_set_imagpara(csi, width, out_pix->height); >> >> cr1 = imx7_csi_reg_read(csi, CSI_CSICR1); >> cr1 &= ~BIT_GCLK_MODE; >> >> - cr18 = imx7_csi_reg_read(csi, CSI_CSICR18); >> cr18 &= BIT_MIPI_DATA_FORMAT_MASK; >> cr18 |= BIT_DATA_FROM_MIPI; >> >> @@ -809,11 +836,9 @@ static void imx7_csi_enable(struct imx7_csi *csi) >> { >> imx7_csi_sw_reset(csi); >> >> - if (csi->is_csi2) { >> - imx7_csi_dmareq_rff_enable(csi); >> - imx7_csi_hw_enable_irq(csi); >> - imx7_csi_hw_enable(csi); >> - } >> + imx7_csi_dmareq_rff_enable(csi); >> + imx7_csi_hw_enable_irq(csi); >> + imx7_csi_hw_enable(csi); >> } >> >> static void imx7_csi_disable(struct imx7_csi *csi) >> @@ -1166,19 +1191,32 @@ static int imx7_csi_parse_endpoint(struct device *dev, >> return fwnode_device_is_available(asd->match.fwnode) ? 0 : -EINVAL; >> } >> >> +static const struct of_device_id imx7_csi_of_match[] = { >> + { .compatible = "fsl,imx7-csi", .data = (void *)IMX7 }, >> + { .compatible = "fsl,imx6ul-csi", .data = (void *)IMX6UL }, > > looking at this again I think we can do this is a different way. > Instead data being the soc_id, just set here if it is_csi2 or not. > > This would avoid to add a soc_id to the struct that it really it > is used only to setup the is_csi2 var. I think this will make this > patch a lot simpler. Well, I have added this soc_id because imx7_csi_get_upstream_endpoint in imx7_csi_pad_link_validate fails: [ 366.549768] csi: failed to find upstream endpoint [ 366.556274] csi: pipeline start failed with -19 My pipeline is: Device topology - entity 1: csi (2 pads, 2 links) type V4L2 subdev subtype Unknown flags 0 device node name /dev/v4l-subdev0 pad0: Sink [fmt:UYVY8_2X8/640x480 field:none colorspace:srgb xfer:srgb ycbcr:601 quantization:full-range] <- "ov5640 1-003c":0 [ENABLED] pad1: Source [fmt:UYVY8_2X8/640x480 field:none colorspace:srgb xfer:srgb ycbcr:601 quantization:full-range] -> "csi capture":0 [ENABLED] - entity 4: csi capture (1 pad, 1 link) type Node subtype V4L flags 0 device node name /dev/video1 pad0: Sink <- "csi":1 [ENABLED] - entity 10: ov5640 1-003c (1 pad, 1 link) type V4L2 subdev subtype Sensor flags 0 device node name /dev/v4l-subdev1 pad0: Source [fmt:UYVY8_2X8/640x480@1/30 field:none colorspace:srgb xfer:srgb ycbcr:601 quantization:full-range] -> "csi":0 [ENABLED] Maybe we should fix this ? Regards, > >> + { }, >> +}; >> +MODULE_DEVICE_TABLE(of, imx7_csi_of_match); >> + >> static int imx7_csi_probe(struct platform_device *pdev) >> { >> struct device *dev = &pdev->dev; >> struct device_node *node = dev->of_node; >> struct imx_media_dev *imxmd; >> struct imx7_csi *csi; >> + const struct of_device_id *of_id; >> int ret; >> >> + of_id = of_match_node(imx7_csi_of_match, node); > > With the above said, here I think we can use the of_match_device? > > hope this makes sense also to you. > > Once again thanks for the patches. > > --- > Cheers, > Rui > >> + if (!of_id) >> + return -ENODEV; >> + >> csi = devm_kzalloc(&pdev->dev, sizeof(*csi), GFP_KERNEL); >> if (!csi) >> return -ENOMEM; >> >> csi->dev = dev; >> + csi->soc_id = (enum csi_soc_id)of_id->data; >> >> csi->mclk = devm_clk_get(&pdev->dev, "mclk"); >> if (IS_ERR(csi->mclk)) { >> @@ -1294,12 +1332,6 @@ static int imx7_csi_remove(struct platform_device *pdev) >> return 0; >> } >> >> -static const struct of_device_id imx7_csi_of_match[] = { >> - { .compatible = "fsl,imx7-csi" }, >> - { }, >> -}; >> -MODULE_DEVICE_TABLE(of, imx7_csi_of_match); >> - >> static struct platform_driver imx7_csi_driver = { >> .probe = imx7_csi_probe, >> .remove = imx7_csi_remove, > -- Sébastien Szymanski Software engineer, Armadeus Systems Tel: +33 (0)9 72 29 41 44 Fax: +33 (0)9 72 28 79 26