From patchwork Wed Apr 24 15:35:37 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Laurent Pinchart X-Patchwork-Id: 791731 Received: from perceval.ideasonboard.com (perceval.ideasonboard.com [213.167.242.64]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 5139515B97E for ; Wed, 24 Apr 2024 15:35:51 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=213.167.242.64 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1713972952; cv=none; b=MzmDndmkKQmsvpU5EXFZCf+ZduvgMGeTYZNjPOljUZHcCFKnMw84BOyPgIq/2rq8hV6Eq3CRODChbNe3aC1CkcnkDvIRT1c2cs2UA9/MvR565ZgS81j60iYOxgU/MgBIPUmMDYBdvvrEWd5gycT+vBQGp29kOGN/OjEsZf22lCQ= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1713972952; c=relaxed/simple; bh=qNl1P6OxFeoDiUEFv8kzqwEdEB6g8PB6OAlrAdG4lsg=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=I8L1ga9lR91xNBK8cO9Jc+of4PviO3U0NZuXYLYbQMAt9w7MXgJHjfr7rDNISfG7BoK+mB9huzxApInh3Y0nTDphZI1GJw+nyX4vzgg/j4IW1NkgbQ8riYr8E+2Chm+2kum2Mw0SpQqVs5Ke/xbqaKGJ3GEkpH0xjpbhQ78IopQ= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=ideasonboard.com; spf=pass smtp.mailfrom=ideasonboard.com; dkim=pass (1024-bit key) header.d=ideasonboard.com header.i=@ideasonboard.com header.b=bFFfJyy+; arc=none smtp.client-ip=213.167.242.64 Authentication-Results: smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=ideasonboard.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=ideasonboard.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=ideasonboard.com header.i=@ideasonboard.com header.b="bFFfJyy+" Received: from pendragon.ideasonboard.com (117.145-247-81.adsl-dyn.isp.belgacom.be [81.247.145.117]) by perceval.ideasonboard.com (Postfix) with ESMTPSA id E07AE82A; Wed, 24 Apr 2024 17:34:57 +0200 (CEST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=ideasonboard.com; s=mail; t=1713972898; bh=qNl1P6OxFeoDiUEFv8kzqwEdEB6g8PB6OAlrAdG4lsg=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=bFFfJyy+qn3Z6rybC/IyzPkpmlxyWujIGK36+DZec/imZk24qTwocNoZUcTygnqWa DU2JJHxeoBPxAQX9QSvBHL8i/K3K2XpxeZvgpE0lLnSgyiGACcSv9aINbfPMBSEYuP i6LW9xWLlSluLvPBc1DLTzMhVrrzdlWDhuyy2u8M= From: Laurent Pinchart To: linux-media@vger.kernel.org Cc: Dave Stevenson , David Plowman , Jean-Michel Hautbois , Hans Verkuil , Naushir Patuck , Sakari Ailus , kernel-list@raspberrypi.com, linux-rpi-kernel@lists.infradead.org, Florian Fainelli , Ray Jui , Scott Branden , bcm-kernel-feedback-list@broadcom.com Subject: [PATCH v11 1/5] media: v4l: Add V4L2-PIX-FMT-Y12P format Date: Wed, 24 Apr 2024 18:35:37 +0300 Message-ID: <20240424153542.32503-2-laurent.pinchart@ideasonboard.com> X-Mailer: git-send-email 2.43.2 In-Reply-To: <20240424153542.32503-1-laurent.pinchart@ideasonboard.com> References: <20240424153542.32503-1-laurent.pinchart@ideasonboard.com> Precedence: bulk X-Mailing-List: linux-media@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 From: Jean-Michel Hautbois This is a packed grey-scale image format with a depth of 12 bits per pixel. Two consecutive pixels are packed into 3 bytes. The first 2 bytes contain the 8 high order bits of the pixels, and the 3rd byte contains the 4 least significants bits of each pixel, in the same order. Add the entry in userspace API, and document it. Signed-off-by: Jean-Michel Hautbois Reviewed-by: Laurent Pinchart Signed-off-by: Laurent Pinchart --- .../userspace-api/media/v4l/pixfmt-yuv-luma.rst | 11 +++++++++++ drivers/media/v4l2-core/v4l2-ioctl.c | 1 + include/uapi/linux/videodev2.h | 1 + 3 files changed, 13 insertions(+) diff --git a/Documentation/userspace-api/media/v4l/pixfmt-yuv-luma.rst b/Documentation/userspace-api/media/v4l/pixfmt-yuv-luma.rst index cf8e4dfbfbd4..a650ceda7cdb 100644 --- a/Documentation/userspace-api/media/v4l/pixfmt-yuv-luma.rst +++ b/Documentation/userspace-api/media/v4l/pixfmt-yuv-luma.rst @@ -114,6 +114,17 @@ are often referred to as greyscale formats. - ... - ... + * .. _V4L2-PIX-FMT-Y12P: + + - ``V4L2_PIX_FMT_Y12P`` + - 'Y12P' + + - Y'\ :sub:`0`\ [11:4] + - Y'\ :sub:`1`\ [11:4] + - Y'\ :sub:`1`\ [3:0] Y'\ :sub:`0`\ [3:0] + - ... + - ... + * .. _V4L2-PIX-FMT-Y14: - ``V4L2_PIX_FMT_Y14`` diff --git a/drivers/media/v4l2-core/v4l2-ioctl.c b/drivers/media/v4l2-core/v4l2-ioctl.c index aab671fae45b..94fe2a1d13cd 100644 --- a/drivers/media/v4l2-core/v4l2-ioctl.c +++ b/drivers/media/v4l2-core/v4l2-ioctl.c @@ -1321,6 +1321,7 @@ static void v4l_fill_fmtdesc(struct v4l2_fmtdesc *fmt) case V4L2_PIX_FMT_Y10BPACK: descr = "10-bit Greyscale (Packed)"; break; case V4L2_PIX_FMT_Y10P: descr = "10-bit Greyscale (MIPI Packed)"; break; case V4L2_PIX_FMT_IPU3_Y10: descr = "10-bit greyscale (IPU3 Packed)"; break; + case V4L2_PIX_FMT_Y12P: descr = "12-bit Greyscale (MIPI Packed)"; break; case V4L2_PIX_FMT_Y8I: descr = "Interleaved 8-bit Greyscale"; break; case V4L2_PIX_FMT_Y12I: descr = "Interleaved 12-bit Greyscale"; break; case V4L2_PIX_FMT_Z16: descr = "16-bit Depth"; break; diff --git a/include/uapi/linux/videodev2.h b/include/uapi/linux/videodev2.h index d944db7ae1ed..760fb8ed7f69 100644 --- a/include/uapi/linux/videodev2.h +++ b/include/uapi/linux/videodev2.h @@ -599,6 +599,7 @@ struct v4l2_pix_format { #define V4L2_PIX_FMT_Y10BPACK v4l2_fourcc('Y', '1', '0', 'B') /* 10 Greyscale bit-packed */ #define V4L2_PIX_FMT_Y10P v4l2_fourcc('Y', '1', '0', 'P') /* 10 Greyscale, MIPI RAW10 packed */ #define V4L2_PIX_FMT_IPU3_Y10 v4l2_fourcc('i', 'p', '3', 'y') /* IPU3 packed 10-bit greyscale */ +#define V4L2_PIX_FMT_Y12P v4l2_fourcc('Y', '1', '2', 'P') /* 12 Greyscale, MIPI RAW12 packed */ /* Palette formats */ #define V4L2_PIX_FMT_PAL8 v4l2_fourcc('P', 'A', 'L', '8') /* 8 8-bit palette */ From patchwork Wed Apr 24 15:35:38 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Laurent Pinchart X-Patchwork-Id: 791730 Received: from perceval.ideasonboard.com (perceval.ideasonboard.com [213.167.242.64]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 463BF15FA81 for ; Wed, 24 Apr 2024 15:35:54 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=213.167.242.64 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1713972955; cv=none; b=KX328AguW6pgfj+kH3X1xq4vfvFjR8EvzrjRso2X0Ii2L7JuWWV035QFfwJtQCP6kFrlGhOXdSXhc0qL+UAt5/ItTlTuwVdB+LvMfxg86G5zkv0tEGIAlkf4L9jb0/5Kyufx3hUvJ9AwgKVRO0FX2f6Ch1shq+jVacG2WgpnoEE= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1713972955; c=relaxed/simple; bh=BhmCEp+phA+WcOcPyZT5lfZdvLiFa77vntb4/D3rREo=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; 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a=rsa-sha256; c=relaxed/simple; d=ideasonboard.com; s=mail; t=1713972898; bh=BhmCEp+phA+WcOcPyZT5lfZdvLiFa77vntb4/D3rREo=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=k5IBeJBK/aSOeUHeHFmo5JY3mn4xH0iq5n5QzYqCnb60pmkwv2nnw/t04LWHIl3tb yW2Iu0bET5QJUdTYV95Vm+S1/W1q1US71VS5q0vJ0Y9Y+Tpa5lRcFvqJxA+RMA4JYJ BhfeoDl186EdtMc2zLgMX7VL1hIXIACKde7dnZhI= From: Laurent Pinchart To: linux-media@vger.kernel.org Cc: Dave Stevenson , David Plowman , Jean-Michel Hautbois , Hans Verkuil , Naushir Patuck , Sakari Ailus , kernel-list@raspberrypi.com, linux-rpi-kernel@lists.infradead.org, Florian Fainelli , Ray Jui , Scott Branden , bcm-kernel-feedback-list@broadcom.com Subject: [PATCH v11 2/5] media: v4l: Add V4L2-PIX-FMT-Y14P format Date: Wed, 24 Apr 2024 18:35:38 +0300 Message-ID: <20240424153542.32503-3-laurent.pinchart@ideasonboard.com> X-Mailer: git-send-email 2.43.2 In-Reply-To: <20240424153542.32503-1-laurent.pinchart@ideasonboard.com> References: <20240424153542.32503-1-laurent.pinchart@ideasonboard.com> Precedence: bulk X-Mailing-List: linux-media@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 From: Jean-Michel Hautbois This is a packed grey-scale image format with a depth of 14 bits per pixel. Every four consecutive samples are packed into seven bytes. Each of the first four bytes contain the eight high order bits of the pixels, and the three following bytes contains the six least significants bits of each pixel, in the same order. As the other formats only needed 5 bytes before, append two bytes in the documentation array. Signed-off-by: Jean-Michel Hautbois Reviewed-by: Laurent Pinchart Signed-off-by: Laurent Pinchart --- .../media/v4l/pixfmt-yuv-luma.rst | 37 +++++++++++++++++++ drivers/media/v4l2-core/v4l2-ioctl.c | 1 + include/uapi/linux/videodev2.h | 1 + 3 files changed, 39 insertions(+) diff --git a/Documentation/userspace-api/media/v4l/pixfmt-yuv-luma.rst b/Documentation/userspace-api/media/v4l/pixfmt-yuv-luma.rst index a650ceda7cdb..b3c5779521d8 100644 --- a/Documentation/userspace-api/media/v4l/pixfmt-yuv-luma.rst +++ b/Documentation/userspace-api/media/v4l/pixfmt-yuv-luma.rst @@ -36,6 +36,8 @@ are often referred to as greyscale formats. - Byte 2 - Byte 3 - Byte 4 + - Byte 5 + - Byte 6 * .. _V4L2-PIX-FMT-GREY: @@ -47,6 +49,8 @@ are often referred to as greyscale formats. - ... - ... - ... + - ... + - ... * .. _V4L2-PIX-FMT-IPU3-Y10: @@ -58,6 +62,8 @@ are often referred to as greyscale formats. - Y'\ :sub:`2`\ [3:0] Y'\ :sub:`1`\ [9:6] - Y'\ :sub:`3`\ [1:0] Y'\ :sub:`2`\ [9:4] - Y'\ :sub:`3`\ [9:2] + - ... + - ... * .. _V4L2-PIX-FMT-Y10: @@ -69,6 +75,8 @@ are often referred to as greyscale formats. - ... - ... - ... + - ... + - ... * .. _V4L2-PIX-FMT-Y10BPACK: @@ -80,6 +88,8 @@ are often referred to as greyscale formats. - Y'\ :sub:`1`\ [3:0] Y'\ :sub:`2`\ [9:6] - Y'\ :sub:`2`\ [5:0] Y'\ :sub:`3`\ [9:8] - Y'\ :sub:`3`\ [7:0] + - ... + - ... * .. _V4L2-PIX-FMT-Y10P: @@ -91,6 +101,8 @@ are often referred to as greyscale formats. - Y'\ :sub:`2`\ [9:2] - Y'\ :sub:`3`\ [9:2] - Y'\ :sub:`3`\ [1:0] Y'\ :sub:`2`\ [1:0] Y'\ :sub:`1`\ [1:0] Y'\ :sub:`0`\ [1:0] + - ... + - ... * .. _V4L2-PIX-FMT-Y12: @@ -102,6 +114,8 @@ are often referred to as greyscale formats. - ... - ... - ... + - ... + - ... * .. _V4L2-PIX-FMT-Y012: @@ -113,6 +127,8 @@ are often referred to as greyscale formats. - ... - ... - ... + - ... + - ... * .. _V4L2-PIX-FMT-Y12P: @@ -124,6 +140,8 @@ are often referred to as greyscale formats. - Y'\ :sub:`1`\ [3:0] Y'\ :sub:`0`\ [3:0] - ... - ... + - ... + - ... * .. _V4L2-PIX-FMT-Y14: @@ -135,6 +153,21 @@ are often referred to as greyscale formats. - ... - ... - ... + - ... + - ... + + * .. _V4L2-PIX-FMT-Y14P: + + - ``V4L2_PIX_FMT_Y14P`` + - 'Y14P' + + - Y'\ :sub:`0`\ [13:6] + - Y'\ :sub:`1`\ [13:6] + - Y'\ :sub:`2`\ [13:6] + - Y'\ :sub:`3`\ [13:6] + - Y'\ :sub:`1`\ [1:0] Y'\ :sub:`0`\ [5:0] + - Y'\ :sub:`2`\ [3:0] Y'\ :sub:`1`\ [5:2] + - Y'\ :sub:`3`\ [5:0] Y'\ :sub:`2`\ [5:4] * .. _V4L2-PIX-FMT-Y16: @@ -146,6 +179,8 @@ are often referred to as greyscale formats. - ... - ... - ... + - ... + - ... * .. _V4L2-PIX-FMT-Y16-BE: @@ -157,6 +192,8 @@ are often referred to as greyscale formats. - ... - ... - ... + - ... + - ... .. raw:: latex diff --git a/drivers/media/v4l2-core/v4l2-ioctl.c b/drivers/media/v4l2-core/v4l2-ioctl.c index 94fe2a1d13cd..4c76d17b4629 100644 --- a/drivers/media/v4l2-core/v4l2-ioctl.c +++ b/drivers/media/v4l2-core/v4l2-ioctl.c @@ -1322,6 +1322,7 @@ static void v4l_fill_fmtdesc(struct v4l2_fmtdesc *fmt) case V4L2_PIX_FMT_Y10P: descr = "10-bit Greyscale (MIPI Packed)"; break; case V4L2_PIX_FMT_IPU3_Y10: descr = "10-bit greyscale (IPU3 Packed)"; break; case V4L2_PIX_FMT_Y12P: descr = "12-bit Greyscale (MIPI Packed)"; break; + case V4L2_PIX_FMT_Y14P: descr = "14-bit Greyscale (MIPI Packed)"; break; case V4L2_PIX_FMT_Y8I: descr = "Interleaved 8-bit Greyscale"; break; case V4L2_PIX_FMT_Y12I: descr = "Interleaved 12-bit Greyscale"; break; case V4L2_PIX_FMT_Z16: descr = "16-bit Depth"; break; diff --git a/include/uapi/linux/videodev2.h b/include/uapi/linux/videodev2.h index 760fb8ed7f69..2f9762842313 100644 --- a/include/uapi/linux/videodev2.h +++ b/include/uapi/linux/videodev2.h @@ -600,6 +600,7 @@ struct v4l2_pix_format { #define V4L2_PIX_FMT_Y10P v4l2_fourcc('Y', '1', '0', 'P') /* 10 Greyscale, MIPI RAW10 packed */ #define V4L2_PIX_FMT_IPU3_Y10 v4l2_fourcc('i', 'p', '3', 'y') /* IPU3 packed 10-bit greyscale */ #define V4L2_PIX_FMT_Y12P v4l2_fourcc('Y', '1', '2', 'P') /* 12 Greyscale, MIPI RAW12 packed */ +#define V4L2_PIX_FMT_Y14P v4l2_fourcc('Y', '1', '4', 'P') /* 14 Greyscale, MIPI RAW14 packed */ /* Palette formats */ #define V4L2_PIX_FMT_PAL8 v4l2_fourcc('P', 'A', 'L', '8') /* 8 8-bit palette */ From patchwork Wed Apr 24 15:35:39 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Laurent Pinchart X-Patchwork-Id: 792196 Received: from perceval.ideasonboard.com (perceval.ideasonboard.com [213.167.242.64]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 4637515EFDB; Wed, 24 Apr 2024 15:35:54 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=213.167.242.64 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1713972957; cv=none; b=PVAbt9+NYK87vy/vA2Vf6S1mOXYoPLoC1DbQmbmp3+rhwpyS/mqmfbEjAfpH+4+Kjh97pYtyNgRC0OYHoVwVo+z9vj9hbD9moCBLfQGgPBtEHGFo7i1KvqRbE4i8v/2K7tVkfPeu12cTHEuFwRpy4yxmdDtIUh78FkZn8Ein7m0= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1713972957; c=relaxed/simple; bh=+F2nEVe+L21L4TExpThK5RdU79sa68HcoJ3nXSjYZo4=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; 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a=rsa-sha256; c=relaxed/simple; d=ideasonboard.com; s=mail; t=1713972899; bh=+F2nEVe+L21L4TExpThK5RdU79sa68HcoJ3nXSjYZo4=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=ejXonQAKp4hnsmS00ZnhwGXqlAvW8aLlGLQdAt60lpa7Hsii9ISMKukfp41v+xXSP 3vf69l736x9rjmgh6izuenxdpAG9JBaGLdiXF9IgPgLhjGtgHiAChSkCS5or7f1Ij6 mTLEdbbUcLOHeaE46tgbWoO7t158PsnVeAaXPzY4= From: Laurent Pinchart To: linux-media@vger.kernel.org Cc: Dave Stevenson , David Plowman , Jean-Michel Hautbois , Hans Verkuil , Naushir Patuck , Sakari Ailus , kernel-list@raspberrypi.com, linux-rpi-kernel@lists.infradead.org, Florian Fainelli , Ray Jui , Scott Branden , bcm-kernel-feedback-list@broadcom.com, Conor Dooley , Krzysztof Kozlowski , Rob Herring , devicetree@vger.kernel.org Subject: [PATCH v11 3/5] dt-bindings: media: Add bindings for bcm2835-unicam Date: Wed, 24 Apr 2024 18:35:39 +0300 Message-ID: <20240424153542.32503-4-laurent.pinchart@ideasonboard.com> X-Mailer: git-send-email 2.43.2 In-Reply-To: <20240424153542.32503-1-laurent.pinchart@ideasonboard.com> References: <20240424153542.32503-1-laurent.pinchart@ideasonboard.com> Precedence: bulk X-Mailing-List: linux-media@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 From: Dave Stevenson Introduce the dt-bindings documentation for bcm2835 CCP2/CSI2 Unicam camera interface. Signed-off-by: Dave Stevenson Co-developed-by: Naushir Patuck Signed-off-by: Naushir Patuck Co-developed-by: Jean-Michel Hautbois Signed-off-by: Jean-Michel Hautbois Reviewed-by: Laurent Pinchart Reviewed-by: Rob Herring Signed-off-by: Laurent Pinchart --- Changes since v7: - Make bus-type mandatory - Refuse additional properties for endpoint Changes since v5: - Squash MAINTAINERS changes in Changes since v3: - Make MAINTAINERS its own patch - Describe the reg and clocks correctly - Use a vendor entry for the number of data lanes --- .../bindings/media/brcm,bcm2835-unicam.yaml | 127 ++++++++++++++++++ MAINTAINERS | 6 + 2 files changed, 133 insertions(+) create mode 100644 Documentation/devicetree/bindings/media/brcm,bcm2835-unicam.yaml diff --git a/Documentation/devicetree/bindings/media/brcm,bcm2835-unicam.yaml b/Documentation/devicetree/bindings/media/brcm,bcm2835-unicam.yaml new file mode 100644 index 000000000000..5fb5d60f069a --- /dev/null +++ b/Documentation/devicetree/bindings/media/brcm,bcm2835-unicam.yaml @@ -0,0 +1,127 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/media/brcm,bcm2835-unicam.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Broadcom BCM283x Camera Interface (Unicam) + +maintainers: + - Raspberry Pi Kernel Maintenance + +description: |- + The Unicam block on BCM283x SoCs is the receiver for either + CSI-2 or CCP2 data from image sensors or similar devices. + + The main platform using this SoC is the Raspberry Pi family of boards. On + the Pi the VideoCore firmware can also control this hardware block, and + driving it from two different processors will cause issues. To avoid this, + the firmware checks the device tree configuration during boot. If it finds + device tree nodes whose name starts with 'csi' then it will stop the firmware + accessing the block, and it can then safely be used via the device tree + binding. + +properties: + compatible: + const: brcm,bcm2835-unicam + + reg: + items: + - description: Unicam block. + - description: Clock Manager Image (CMI) block. + + reg-names: + items: + - const: unicam + - const: cmi + + interrupts: + maxItems: 1 + + clocks: + items: + - description: Clock to drive the LP state machine of Unicam. + - description: Clock for the VPU (core clock). + + clock-names: + items: + - const: lp + - const: vpu + + power-domains: + items: + - description: Unicam power domain + + brcm,num-data-lanes: + $ref: /schemas/types.yaml#/definitions/uint32 + enum: [ 2, 4 ] + description: | + Number of CSI-2 data lanes supported by this Unicam instance. The number + of data lanes actively used is specified with the data-lanes endpoint + property. + + port: + $ref: /schemas/graph.yaml#/$defs/port-base + unevaluatedProperties: false + + properties: + endpoint: + $ref: /schemas/media/video-interfaces.yaml# + additionalProperties: false + + properties: + bus-type: + enum: [ 3, 4 ] + + clock-noncontinuous: true + data-lanes: true + remote-endpoint: true + + required: + - bus-type + - data-lanes + - remote-endpoint + + required: + - endpoint + +required: + - compatible + - reg + - reg-names + - interrupts + - clocks + - clock-names + - power-domains + - brcm,num-data-lanes + - port + +additionalProperties: False + +examples: + - | + #include + #include + #include + #include + + csi1: csi@7e801000 { + compatible = "brcm,bcm2835-unicam"; + reg = <0x7e801000 0x800>, + <0x7e802004 0x4>; + reg-names = "unicam", "cmi"; + interrupts = ; + clocks = <&clocks BCM2835_CLOCK_CAM1>, + <&firmware_clocks 4>; + clock-names = "lp", "vpu"; + power-domains = <&power RPI_POWER_DOMAIN_UNICAM1>; + brcm,num-data-lanes = <2>; + port { + csi1_ep: endpoint { + remote-endpoint = <&imx219_0>; + bus-type = ; + data-lanes = <1 2>; + }; + }; + }; +... diff --git a/MAINTAINERS b/MAINTAINERS index 7c121493f43d..91420f602eb9 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -4034,6 +4034,12 @@ N: bcm113* N: bcm216* N: kona +BROADCOM BCM2835 CAMERA DRIVERS +M: Raspberry Pi Kernel Maintenance +L: linux-media@vger.kernel.org +S: Maintained +F: Documentation/devicetree/bindings/media/brcm,bcm2835-unicam.yaml + BROADCOM BCM47XX MIPS ARCHITECTURE M: Hauke Mehrtens M: Rafał Miłecki From patchwork Wed Apr 24 15:35:40 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Laurent Pinchart X-Patchwork-Id: 792195 Received: from perceval.ideasonboard.com (perceval.ideasonboard.com [213.167.242.64]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 4B5D8161924; 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arc=none smtp.client-ip=213.167.242.64 Authentication-Results: smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=ideasonboard.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=ideasonboard.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=ideasonboard.com header.i=@ideasonboard.com header.b="pp8TrZDV" Received: from pendragon.ideasonboard.com (117.145-247-81.adsl-dyn.isp.belgacom.be [81.247.145.117]) by perceval.ideasonboard.com (Postfix) with ESMTPSA id 6454E114D; Wed, 24 Apr 2024 17:35:00 +0200 (CEST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=ideasonboard.com; s=mail; t=1713972900; bh=nINwy4nNneEUgbl/hpdwOFmLyLpPfQTOs5iOcdaaD+Y=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=pp8TrZDVJpu11zXsBptlY9T3+IfsaPOdFnQozOPVCXHxV15TzxwRJGsbdxG9pB6QC 7xKZbUkAM6gKKgho1KNDRluA/kRMNL+adZZGHPDVI0uPTKTUiXFxt8m7NnDZGqLc2V sN5JdJLOnjGl/SzNkPJx6VBWoOdWSWCorEY9ApUo= From: Laurent Pinchart To: linux-media@vger.kernel.org Cc: Dave Stevenson , David Plowman , Jean-Michel Hautbois , Hans Verkuil , Naushir Patuck , Sakari Ailus , kernel-list@raspberrypi.com, linux-rpi-kernel@lists.infradead.org, Florian Fainelli , Ray Jui , Scott Branden , bcm-kernel-feedback-list@broadcom.com, Conor Dooley , Krzysztof Kozlowski , Rob Herring , devicetree@vger.kernel.org Subject: [PATCH v11 4/5] media: bcm2835-unicam: Add support for CCP2/CSI2 camera interface Date: Wed, 24 Apr 2024 18:35:40 +0300 Message-ID: <20240424153542.32503-5-laurent.pinchart@ideasonboard.com> X-Mailer: git-send-email 2.43.2 In-Reply-To: <20240424153542.32503-1-laurent.pinchart@ideasonboard.com> References: <20240424153542.32503-1-laurent.pinchart@ideasonboard.com> Precedence: bulk X-Mailing-List: linux-media@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 From: Dave Stevenson Add a driver for the Unicam camera receiver block on BCM283x processors. It is represented as two video device nodes: unicam-image and unicam-embedded which are connected to an internal subdev (named unicam-subdev) in order to manage streams routing. Signed-off-by: Dave Stevenson Co-developed-by: Naushir Patuck Signed-off-by: Naushir Patuck Co-developed-by: Jean-Michel Hautbois Signed-off-by: Jean-Michel Hautbois Co-developed-by: Laurent Pinchart Signed-off-by: Laurent Pinchart --- Changes since v8: - Use MIPI_CSI2_DT_* macros - Disable image stream on start error - Move hardware configuration to unicam_sd_enable_streams() - Get VC and DT from frame descriptor - Don't cache fmtinfo in unicam_node - Calculate line_int_freq based on subdev format - Fix try_fmt_meta regression from v5 - Replace streaming flag with vb2_start_streaming_called() - Use vb2_video_unregister_device() Changes since v7: - Indentation, line wrap and white space fixes - Add copyright notice for Ideas on Board - Use unsigned values for shifts in macro - Replace condition and assignment with max() - Don't set the serial to an empty string manually - Don't use loop for lane clocks setting - Store PUM value in struct unicam_format_info Changes since v6: - Fix typos in comments - Drop outdated comment - Indentation fixes - Turn UNICAM_SD_PAD_* into an enum - Drop unicam_format_info.metadata_fmt - Remove unneeded dev_dbg() - Report meta frame sizes as V4L2_FRMSIZE_TYPE_STEPWISE - Drop stray semicolons - Set V4L2_FMT_FLAG_META_LINE_BASED for metadata format - Rename error label - Use .get_mbus_config() to get number of data lanes - Drop minimum of 3 buffers in .queue_setup() - Merge locks for the two video nodes - Rework start/stop to avoid race conditions Changes since v5: - Move to drivers/media/platform/broadcom/ - Port to the upstream V4L2 streams API - Rebase on latest metadata API proposal - Add missing error message - Drop unneeded documentation block for unicam_isr() - Drop unneeded dev_dbg() and dev_err() messages - Drop unneeded streams_mask and fmt checks - Drop unused unicam_sd_pad_is_sink() - Drop unneeded includes - Drop v4l2_ctrl_subscribe_event() call - Use pm_runtime_resume_and_get() - Indentation and line wrap fixes - Let the framework set bus_info - Use v4l2_fwnode_endpoint_parse() - Fix media device cleanup - Drop lane reordering checks - Fix subdev state locking - Drop extra debug messages - Move clock handling to runtime PM handlers - Reorder functions - Rename init functions for more clarity - Initialize runtime PM earlier - Clarify error messages - Simplify subdev init with local variable - Fix subdev cleanup - Fix typos and indentation - Don't initialize local variables needlessly - Simplify num lanes check - Fix metadata handling in subdev set_fmt - Drop manual fallback to .s_stream() - Pass v4l2_pix_format to unicam_calc_format_size_bpl() - Simplify unicam_set_default_format() - Fix default format settings - Add busy check in unicam_s_fmt_meta() - Add missing \n at end of format strings - Fix metadata handling in subdev set_fmt - Fix locking when starting streaming - Return buffers from start streaming fails - Fix format validation for metadata node - Use video_device_pipeline_{start,stop}() helpers - Simplify format enumeration - Drop unset variable - Update MAINTAINERS entry - Update to the upstream v4l2_async_nf API - Update to the latest subdev routing API - Update to the latest subdev state API - Move from subdev .init_cfg() to .init_state() - Update to the latest videobuf2 API - Fix v4l2_subdev_enable_streams() error check - Use correct pad for the connected subdev - Return buffers to vb2 when start streaming fails - Improve debugging in start streaming handler - Simplify DMA address management - Drop comment about bcm2835-camera driver - Clarify comments that explain min/max sizes - Pass v4l2_pix_format to unicam_try_fmt() - Drop unneeded local variables - Rename image-related constants and functions - Turn unicam_fmt.metadata_fmt into bool - Rename unicam_fmt to unicam_format_info - Rename unicam_format_info variables to fmtinfo - Rename unicam_node.v_fmt to fmt - Add metadata formats for RAW10, RAW12 and RAW14 - Make metadata formats line-based - Validate format on metadata video device - Add Co-devlopped-by tags Changes since v3: - Add the vendor prefix for DT name - Use the reg-names in DT parsing - Remove MAINTAINERS entry Changes since v2: - Change code organization - Remove unused variables - Correct the fmt_meta functions - Rewrite the start/stop streaming - You can now start the image node alone, but not the metadata one - The buffers are allocated per-node - only the required stream is started, if the route exists and is enabled - Prefix the macros with UNICAM_ to not have too generic names - Drop colorspace support Changes since v1: - Replace the unicam_{info,debug,error} macros with dev_*() --- MAINTAINERS | 1 + drivers/media/platform/Kconfig | 1 + drivers/media/platform/Makefile | 1 + drivers/media/platform/broadcom/Kconfig | 23 + drivers/media/platform/broadcom/Makefile | 3 + .../platform/broadcom/bcm2835-unicam-regs.h | 246 ++ .../media/platform/broadcom/bcm2835-unicam.c | 2741 +++++++++++++++++ 7 files changed, 3016 insertions(+) create mode 100644 drivers/media/platform/broadcom/Kconfig create mode 100644 drivers/media/platform/broadcom/Makefile create mode 100644 drivers/media/platform/broadcom/bcm2835-unicam-regs.h create mode 100644 drivers/media/platform/broadcom/bcm2835-unicam.c diff --git a/MAINTAINERS b/MAINTAINERS index 91420f602eb9..037d065fb8bb 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -4039,6 +4039,7 @@ M: Raspberry Pi Kernel Maintenance L: linux-media@vger.kernel.org S: Maintained F: Documentation/devicetree/bindings/media/brcm,bcm2835-unicam.yaml +F: drivers/media/platform/bcm2835/ BROADCOM BCM47XX MIPS ARCHITECTURE M: Hauke Mehrtens diff --git a/drivers/media/platform/Kconfig b/drivers/media/platform/Kconfig index 91e54215de3a..2d79bfc68c15 100644 --- a/drivers/media/platform/Kconfig +++ b/drivers/media/platform/Kconfig @@ -67,6 +67,7 @@ source "drivers/media/platform/amlogic/Kconfig" source "drivers/media/platform/amphion/Kconfig" source "drivers/media/platform/aspeed/Kconfig" source "drivers/media/platform/atmel/Kconfig" +source "drivers/media/platform/broadcom/Kconfig" source "drivers/media/platform/cadence/Kconfig" source "drivers/media/platform/chips-media/Kconfig" source "drivers/media/platform/intel/Kconfig" diff --git a/drivers/media/platform/Makefile b/drivers/media/platform/Makefile index 3296ec1ebe16..da17301f7439 100644 --- a/drivers/media/platform/Makefile +++ b/drivers/media/platform/Makefile @@ -10,6 +10,7 @@ obj-y += amlogic/ obj-y += amphion/ obj-y += aspeed/ obj-y += atmel/ +obj-y += broadcom/ obj-y += cadence/ obj-y += chips-media/ obj-y += intel/ diff --git a/drivers/media/platform/broadcom/Kconfig b/drivers/media/platform/broadcom/Kconfig new file mode 100644 index 000000000000..cc2c9afcc948 --- /dev/null +++ b/drivers/media/platform/broadcom/Kconfig @@ -0,0 +1,23 @@ +# SPDX-License-Identifier: GPL-2.0 + +config VIDEO_BCM2835_UNICAM + tristate "Broadcom BCM283x/BCM271x Unicam video capture driver" + depends on ARCH_BCM2835 || COMPILE_TEST + depends on PM + depends on VIDEO_DEV + select MEDIA_CONTROLLER + select V4L2_FWNODE + select VIDEO_V4L2_SUBDEV_API + select VIDEOBUF2_DMA_CONTIG + help + Say Y here to enable support for the BCM283x/BCM271x CSI-2 receiver. + This is a V4L2 driver that controls the CSI-2 receiver directly, + independently from the VC4 firmware. + + This driver is mutually exclusive with the use of bcm2835-camera. The + firmware will disable all access to the peripheral from within the + firmware if it finds a DT node using it, and bcm2835-camera will + therefore fail to probe. + + To compile this driver as a module, choose M here. The module will be + called bcm2835-unicam. diff --git a/drivers/media/platform/broadcom/Makefile b/drivers/media/platform/broadcom/Makefile new file mode 100644 index 000000000000..03d2045aba2e --- /dev/null +++ b/drivers/media/platform/broadcom/Makefile @@ -0,0 +1,3 @@ +# SPDX-License-Identifier: GPL-2.0 + +obj-$(CONFIG_VIDEO_BCM2835_UNICAM) += bcm2835-unicam.o diff --git a/drivers/media/platform/broadcom/bcm2835-unicam-regs.h b/drivers/media/platform/broadcom/bcm2835-unicam-regs.h new file mode 100644 index 000000000000..fce6fa92707c --- /dev/null +++ b/drivers/media/platform/broadcom/bcm2835-unicam-regs.h @@ -0,0 +1,246 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ + +/* + * Copyright (C) 2017-2020 Raspberry Pi Trading. + * Dave Stevenson + */ + +#ifndef VC4_REGS_UNICAM_H +#define VC4_REGS_UNICAM_H + +#include + +/* + * The following values are taken from files found within the code drop + * made by Broadcom for the BCM21553 Graphics Driver, predominantly in + * brcm_usrlib/dag/vmcsx/vcinclude/hardware_vc4.h. + * They have been modified to be only the register offset. + */ +#define UNICAM_CTRL 0x000 +#define UNICAM_STA 0x004 +#define UNICAM_ANA 0x008 +#define UNICAM_PRI 0x00c +#define UNICAM_CLK 0x010 +#define UNICAM_CLT 0x014 +#define UNICAM_DAT0 0x018 +#define UNICAM_DAT1 0x01c +#define UNICAM_DAT2 0x020 +#define UNICAM_DAT3 0x024 +#define UNICAM_DLT 0x028 +#define UNICAM_CMP0 0x02c +#define UNICAM_CMP1 0x030 +#define UNICAM_CAP0 0x034 +#define UNICAM_CAP1 0x038 +#define UNICAM_ICTL 0x100 +#define UNICAM_ISTA 0x104 +#define UNICAM_IDI0 0x108 +#define UNICAM_IPIPE 0x10c +#define UNICAM_IBSA0 0x110 +#define UNICAM_IBEA0 0x114 +#define UNICAM_IBLS 0x118 +#define UNICAM_IBWP 0x11c +#define UNICAM_IHWIN 0x120 +#define UNICAM_IHSTA 0x124 +#define UNICAM_IVWIN 0x128 +#define UNICAM_IVSTA 0x12c +#define UNICAM_ICC 0x130 +#define UNICAM_ICS 0x134 +#define UNICAM_IDC 0x138 +#define UNICAM_IDPO 0x13c +#define UNICAM_IDCA 0x140 +#define UNICAM_IDCD 0x144 +#define UNICAM_IDS 0x148 +#define UNICAM_DCS 0x200 +#define UNICAM_DBSA0 0x204 +#define UNICAM_DBEA0 0x208 +#define UNICAM_DBWP 0x20c +#define UNICAM_DBCTL 0x300 +#define UNICAM_IBSA1 0x304 +#define UNICAM_IBEA1 0x308 +#define UNICAM_IDI1 0x30c +#define UNICAM_DBSA1 0x310 +#define UNICAM_DBEA1 0x314 +#define UNICAM_MISC 0x400 + +/* + * The following bitmasks are from the kernel released by Broadcom + * for Android - https://android.googlesource.com/kernel/bcm/ + * The Rhea, Hawaii, and Java chips all contain the same VideoCore4 + * Unicam block as BCM2835, as defined in eg + * arch/arm/mach-rhea/include/mach/rdb_A0/brcm_rdb_cam.h and similar. + * Values reworked to use the kernel BIT and GENMASK macros. + * + * Some of the bit mnenomics have been amended to match the datasheet. + */ +/* UNICAM_CTRL Register */ +#define UNICAM_CPE BIT(0) +#define UNICAM_MEM BIT(1) +#define UNICAM_CPR BIT(2) +#define UNICAM_CPM_MASK GENMASK(3, 3) +#define UNICAM_CPM_CSI2 0 +#define UNICAM_CPM_CCP2 1 +#define UNICAM_SOE BIT(4) +#define UNICAM_DCM_MASK GENMASK(5, 5) +#define UNICAM_DCM_STROBE 0 +#define UNICAM_DCM_DATA 1 +#define UNICAM_SLS BIT(6) +#define UNICAM_PFT_MASK GENMASK(11, 8) +#define UNICAM_OET_MASK GENMASK(20, 12) + +/* UNICAM_STA Register */ +#define UNICAM_SYN BIT(0) +#define UNICAM_CS BIT(1) +#define UNICAM_SBE BIT(2) +#define UNICAM_PBE BIT(3) +#define UNICAM_HOE BIT(4) +#define UNICAM_PLE BIT(5) +#define UNICAM_SSC BIT(6) +#define UNICAM_CRCE BIT(7) +#define UNICAM_OES BIT(8) +#define UNICAM_IFO BIT(9) +#define UNICAM_OFO BIT(10) +#define UNICAM_BFO BIT(11) +#define UNICAM_DL BIT(12) +#define UNICAM_PS BIT(13) +#define UNICAM_IS BIT(14) +#define UNICAM_PI0 BIT(15) +#define UNICAM_PI1 BIT(16) +#define UNICAM_FSI_S BIT(17) +#define UNICAM_FEI_S BIT(18) +#define UNICAM_LCI_S BIT(19) +#define UNICAM_BUF0_RDY BIT(20) +#define UNICAM_BUF0_NO BIT(21) +#define UNICAM_BUF1_RDY BIT(22) +#define UNICAM_BUF1_NO BIT(23) +#define UNICAM_DI BIT(24) + +#define UNICAM_STA_MASK_ALL \ + (UNICAM_SBE | UNICAM_PBE | UNICAM_HOE | UNICAM_PLE | UNICAM_SSC | \ + UNICAM_CRCE | UNICAM_IFO | UNICAM_OFO | UNICAM_DL | UNICAM_PS | \ + UNICAM_PI0 | UNICAM_PI1) + +/* UNICAM_ANA Register */ +#define UNICAM_APD BIT(0) +#define UNICAM_BPD BIT(1) +#define UNICAM_AR BIT(2) +#define UNICAM_DDL BIT(3) +#define UNICAM_CTATADJ_MASK GENMASK(7, 4) +#define UNICAM_PTATADJ_MASK GENMASK(11, 8) + +/* UNICAM_PRI Register */ +#define UNICAM_PE BIT(0) +#define UNICAM_PT_MASK GENMASK(2, 1) +#define UNICAM_NP_MASK GENMASK(7, 4) +#define UNICAM_PP_MASK GENMASK(11, 8) +#define UNICAM_BS_MASK GENMASK(15, 12) +#define UNICAM_BL_MASK GENMASK(17, 16) + +/* UNICAM_CLK Register */ +#define UNICAM_CLE BIT(0) +#define UNICAM_CLPD BIT(1) +#define UNICAM_CLLPE BIT(2) +#define UNICAM_CLHSE BIT(3) +#define UNICAM_CLTRE BIT(4) +#define UNICAM_CLAC_MASK GENMASK(8, 5) +#define UNICAM_CLSTE BIT(29) + +/* UNICAM_CLT Register */ +#define UNICAM_CLT1_MASK GENMASK(7, 0) +#define UNICAM_CLT2_MASK GENMASK(15, 8) + +/* UNICAM_DATn Registers */ +#define UNICAM_DLE BIT(0) +#define UNICAM_DLPD BIT(1) +#define UNICAM_DLLPE BIT(2) +#define UNICAM_DLHSE BIT(3) +#define UNICAM_DLTRE BIT(4) +#define UNICAM_DLSM BIT(5) +#define UNICAM_DLFO BIT(28) +#define UNICAM_DLSTE BIT(29) + +#define UNICAM_DAT_MASK_ALL (UNICAM_DLSTE | UNICAM_DLFO) + +/* UNICAM_DLT Register */ +#define UNICAM_DLT1_MASK GENMASK(7, 0) +#define UNICAM_DLT2_MASK GENMASK(15, 8) +#define UNICAM_DLT3_MASK GENMASK(23, 16) + +/* UNICAM_ICTL Register */ +#define UNICAM_FSIE BIT(0) +#define UNICAM_FEIE BIT(1) +#define UNICAM_IBOB BIT(2) +#define UNICAM_FCM BIT(3) +#define UNICAM_TFC BIT(4) +#define UNICAM_LIP_MASK GENMASK(6, 5) +#define UNICAM_LCIE_MASK GENMASK(28, 16) + +/* UNICAM_IDI0/1 Register */ +#define UNICAM_ID0_MASK GENMASK(7, 0) +#define UNICAM_ID1_MASK GENMASK(15, 8) +#define UNICAM_ID2_MASK GENMASK(23, 16) +#define UNICAM_ID3_MASK GENMASK(31, 24) + +/* UNICAM_ISTA Register */ +#define UNICAM_FSI BIT(0) +#define UNICAM_FEI BIT(1) +#define UNICAM_LCI BIT(2) + +#define UNICAM_ISTA_MASK_ALL (UNICAM_FSI | UNICAM_FEI | UNICAM_LCI) + +/* UNICAM_IPIPE Register */ +#define UNICAM_PUM_MASK GENMASK(2, 0) +/* Unpacking modes */ +#define UNICAM_PUM_NONE 0 +#define UNICAM_PUM_UNPACK6 1 +#define UNICAM_PUM_UNPACK7 2 +#define UNICAM_PUM_UNPACK8 3 +#define UNICAM_PUM_UNPACK10 4 +#define UNICAM_PUM_UNPACK12 5 +#define UNICAM_PUM_UNPACK14 6 +#define UNICAM_PUM_UNPACK16 7 +#define UNICAM_DDM_MASK GENMASK(6, 3) +#define UNICAM_PPM_MASK GENMASK(9, 7) +/* Packing modes */ +#define UNICAM_PPM_NONE 0 +#define UNICAM_PPM_PACK8 1 +#define UNICAM_PPM_PACK10 2 +#define UNICAM_PPM_PACK12 3 +#define UNICAM_PPM_PACK14 4 +#define UNICAM_PPM_PACK16 5 +#define UNICAM_DEM_MASK GENMASK(11, 10) +#define UNICAM_DEBL_MASK GENMASK(14, 12) +#define UNICAM_ICM_MASK GENMASK(16, 15) +#define UNICAM_IDM_MASK GENMASK(17, 17) + +/* UNICAM_ICC Register */ +#define UNICAM_ICFL_MASK GENMASK(4, 0) +#define UNICAM_ICFH_MASK GENMASK(9, 5) +#define UNICAM_ICST_MASK GENMASK(12, 10) +#define UNICAM_ICLT_MASK GENMASK(15, 13) +#define UNICAM_ICLL_MASK GENMASK(31, 16) + +/* UNICAM_DCS Register */ +#define UNICAM_DIE BIT(0) +#define UNICAM_DIM BIT(1) +#define UNICAM_DBOB BIT(3) +#define UNICAM_FDE BIT(4) +#define UNICAM_LDP BIT(5) +#define UNICAM_EDL_MASK GENMASK(15, 8) + +/* UNICAM_DBCTL Register */ +#define UNICAM_DBEN BIT(0) +#define UNICAM_BUF0_IE BIT(1) +#define UNICAM_BUF1_IE BIT(2) + +/* UNICAM_CMP[0,1] register */ +#define UNICAM_PCE BIT(31) +#define UNICAM_GI BIT(9) +#define UNICAM_CPH BIT(8) +#define UNICAM_PCVC_MASK GENMASK(7, 6) +#define UNICAM_PCDT_MASK GENMASK(5, 0) + +/* UNICAM_MISC register */ +#define UNICAM_FL0 BIT(6) +#define UNICAM_FL1 BIT(9) + +#endif diff --git a/drivers/media/platform/broadcom/bcm2835-unicam.c b/drivers/media/platform/broadcom/bcm2835-unicam.c new file mode 100644 index 000000000000..e91d02a64770 --- /dev/null +++ b/drivers/media/platform/broadcom/bcm2835-unicam.c @@ -0,0 +1,2741 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * BCM283x / BCM271x Unicam Capture Driver + * + * Copyright (C) 2017-2020 - Raspberry Pi (Trading) Ltd. + * Copyright (C) 2024 - Ideas on Board + * + * Dave Stevenson + * + * Based on TI am437x driver by + * Benoit Parrot + * Lad, Prabhakar + * + * and TI CAL camera interface driver by + * Benoit Parrot + * + * + * There are two camera drivers in the kernel for BCM283x - this one and + * bcm2835-camera (currently in staging). + * + * This driver directly controls the Unicam peripheral - there is no + * involvement with the VideoCore firmware. Unicam receives CSI-2 or CCP2 data + * and writes it into SDRAM. The only potential processing options are to + * repack Bayer data into an alternate format, and applying windowing. The + * repacking does not shift the data, so can repack V4L2_PIX_FMT_Sxxxx10P to + * V4L2_PIX_FMT_Sxxxx10, or V4L2_PIX_FMT_Sxxxx12P to V4L2_PIX_FMT_Sxxxx12, but + * not generically up to V4L2_PIX_FMT_Sxxxx16. Support for windowing may be + * added later. + * + * It should be possible to connect this driver to any sensor with a suitable + * output interface and V4L2 subdevice driver. + */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#include "bcm2835-unicam-regs.h" + +#define UNICAM_MODULE_NAME "unicam" + +/* + * Unicam must request a minimum of 250Mhz from the VPU clock. + * Otherwise the input FIFOs overrun and cause image corruption. + */ +#define UNICAM_MIN_VPU_CLOCK_RATE (250 * 1000 * 1000) + +/* Unicam has an internal DMA alignment constraint of 16 bytes for each line. */ +#define UNICAM_DMA_BPL_ALIGNMENT 16 + +/* + * The image stride is stored in a 16 bit register, and needs to be aligned to + * the DMA constraint. As the ISP in the same SoC has a 32 bytes alignment + * constraint on its input, set the image stride alignment to 32 bytes here as + * well to avoid incompatible configurations. + */ +#define UNICAM_IMAGE_BPL_ALIGNMENT 32 +#define UNICAM_IMAGE_MAX_BPL ((1U << 16) - UNICAM_IMAGE_BPL_ALIGNMENT) + +/* + * Max width is therefore determined by the max stride divided by the number of + * bits per pixel. Take 32bpp as a worst case. No imposed limit on the height, + * so adopt a square image for want of anything better. + */ +#define UNICAM_IMAGE_MIN_WIDTH 16 +#define UNICAM_IMAGE_MIN_HEIGHT 16 +#define UNICAM_IMAGE_MAX_WIDTH (UNICAM_IMAGE_MAX_BPL / 4) +#define UNICAM_IMAGE_MAX_HEIGHT UNICAM_IMAGE_MAX_WIDTH + +/* + * There's no intrinsic limits on the width and height for embedded data. Use + * the same maximum values as for the image, to avoid overflows in the image + * size computation. + */ +#define UNICAM_META_MIN_WIDTH 1 +#define UNICAM_META_MIN_HEIGHT 1 +#define UNICAM_META_MAX_WIDTH UNICAM_IMAGE_MAX_WIDTH +#define UNICAM_META_MAX_HEIGHT UNICAM_IMAGE_MAX_HEIGHT + +/* + * Size of the dummy buffer. Can be any size really, but the DMA + * allocation works in units of page sizes. + */ +#define UNICAM_DUMMY_BUF_SIZE PAGE_SIZE + +enum unicam_pad { + UNICAM_SD_PAD_SINK, + UNICAM_SD_PAD_SOURCE_IMAGE, + UNICAM_SD_PAD_SOURCE_METADATA, + UNICAM_SD_NUM_PADS +}; + +enum unicam_node_type { + UNICAM_IMAGE_NODE, + UNICAM_METADATA_NODE, + UNICAM_MAX_NODES +}; + +/* + * struct unicam_format_info - Unicam media bus format information + * @fourcc: V4L2 pixel format FCC identifier. 0 if n/a. + * @unpacked_fourcc: V4L2 pixel format FCC identifier if the data is expanded + * out to 16bpp. 0 if n/a. + * @code: V4L2 media bus format code. + * @depth: Bits per pixel as delivered from the source. + * @csi_dt: CSI data type. + * @unpack: PUM value when unpacking to @unpacked_fourcc + */ +struct unicam_format_info { + u32 fourcc; + u32 unpacked_fourcc; + u32 code; + u8 depth; + u8 csi_dt; + u8 unpack; +}; + +struct unicam_buffer { + struct vb2_v4l2_buffer vb; + struct list_head list; + dma_addr_t dma_addr; + unsigned int size; +}; + +static inline struct unicam_buffer *to_unicam_buffer(struct vb2_buffer *vb) +{ + return container_of(vb, struct unicam_buffer, vb.vb2_buf); +} + +struct unicam_node { + bool registered; + unsigned int id; + + /* Pointer to the current v4l2_buffer */ + struct unicam_buffer *cur_frm; + /* Pointer to the next v4l2_buffer */ + struct unicam_buffer *next_frm; + /* Used to store current pixel format */ + struct v4l2_format fmt; + /* Buffer queue used in video-buf */ + struct vb2_queue buffer_queue; + /* Queue of filled frames */ + struct list_head dma_queue; + /* IRQ lock for DMA queue */ + spinlock_t dma_queue_lock; + /* Identifies video device for this channel */ + struct video_device video_dev; + /* Pointer to the parent handle */ + struct unicam_device *dev; + struct media_pad pad; + /* + * Dummy buffer intended to be used by unicam + * if we have no other queued buffers to swap to. + */ + struct unicam_buffer dummy_buf; + void *dummy_buf_cpu_addr; +}; + +struct unicam_device { + struct kref kref; + + /* peripheral base address */ + void __iomem *base; + /* clock gating base address */ + void __iomem *clk_gate_base; + /* lp clock handle */ + struct clk *clock; + /* vpu clock handle */ + struct clk *vpu_clock; + /* V4l2 device */ + struct v4l2_device v4l2_dev; + struct media_device mdev; + + /* parent device */ + struct device *dev; + /* subdevice async notifier */ + struct v4l2_async_notifier notifier; + unsigned int sequence; + + /* Sensor node */ + struct { + struct v4l2_subdev *subdev; + struct media_pad *pad; + } sensor; + + /* Internal subdev */ + struct { + struct v4l2_subdev sd; + struct media_pad pads[UNICAM_SD_NUM_PADS]; + unsigned int enabled_streams; + } subdev; + + enum v4l2_mbus_type bus_type; + /* + * Stores bus.mipi_csi2.flags for CSI2 sensors, or + * bus.mipi_csi1.strobe for CCP2. + */ + unsigned int bus_flags; + unsigned int max_data_lanes; + + struct { + struct media_pipeline pipe; + unsigned int num_data_lanes; + unsigned int nodes; + } pipe; + + /* Lock used for the video devices of both nodes */ + struct mutex lock; + struct unicam_node node[UNICAM_MAX_NODES]; +}; + +static inline struct unicam_device * +notifier_to_unicam_device(struct v4l2_async_notifier *notifier) +{ + return container_of(notifier, struct unicam_device, notifier); +} + +static inline struct unicam_device * +sd_to_unicam_device(struct v4l2_subdev *sd) +{ + return container_of(sd, struct unicam_device, subdev.sd); +} + +static void unicam_release(struct kref *kref) +{ + struct unicam_device *unicam = + container_of(kref, struct unicam_device, kref); + + if (unicam->mdev.dev) + media_device_cleanup(&unicam->mdev); + + mutex_destroy(&unicam->lock); + kfree(unicam); +} + +static struct unicam_device *unicam_get(struct unicam_device *unicam) +{ + kref_get(&unicam->kref); + + return unicam; +} + +static void unicam_put(struct unicam_device *unicam) +{ + kref_put(&unicam->kref, unicam_release); +} + +/* ----------------------------------------------------------------------------- + * Misc helper functions + */ + +static inline bool unicam_sd_pad_is_source(u32 pad) +{ + /* Camera RX has 1 sink pad, and N source pads */ + return pad != UNICAM_SD_PAD_SINK; +} + +static inline bool is_metadata_node(struct unicam_node *node) +{ + return node->video_dev.device_caps & V4L2_CAP_META_CAPTURE; +} + +static inline bool is_image_node(struct unicam_node *node) +{ + return node->video_dev.device_caps & V4L2_CAP_VIDEO_CAPTURE; +} + +/* ----------------------------------------------------------------------------- + * Format data table and helper functions + */ + +static const struct v4l2_mbus_framefmt unicam_default_image_format = { + .width = 640, + .height = 480, + .code = MEDIA_BUS_FMT_UYVY8_1X16, + .field = V4L2_FIELD_NONE, + .colorspace = V4L2_COLORSPACE_SRGB, + .ycbcr_enc = V4L2_YCBCR_ENC_601, + .quantization = V4L2_QUANTIZATION_LIM_RANGE, + .xfer_func = V4L2_XFER_FUNC_SRGB, + .flags = 0, +}; + +static const struct v4l2_mbus_framefmt unicam_default_meta_format = { + .width = 640, + .height = 2, + .code = MEDIA_BUS_FMT_META_8, + .field = V4L2_FIELD_NONE, +}; + +static const struct unicam_format_info unicam_image_formats[] = { + /* YUV Formats */ + { + .fourcc = V4L2_PIX_FMT_YUYV, + .code = MEDIA_BUS_FMT_YUYV8_1X16, + .depth = 16, + .csi_dt = MIPI_CSI2_DT_YUV422_8B, + }, { + .fourcc = V4L2_PIX_FMT_UYVY, + .code = MEDIA_BUS_FMT_UYVY8_1X16, + .depth = 16, + .csi_dt = MIPI_CSI2_DT_YUV422_8B, + }, { + .fourcc = V4L2_PIX_FMT_YVYU, + .code = MEDIA_BUS_FMT_YVYU8_1X16, + .depth = 16, + .csi_dt = MIPI_CSI2_DT_YUV422_8B, + }, { + .fourcc = V4L2_PIX_FMT_VYUY, + .code = MEDIA_BUS_FMT_VYUY8_1X16, + .depth = 16, + .csi_dt = MIPI_CSI2_DT_YUV422_8B, + }, { + /* RGB Formats */ + .fourcc = V4L2_PIX_FMT_RGB565, /* gggbbbbb rrrrrggg */ + .code = MEDIA_BUS_FMT_RGB565_1X16, + .depth = 16, + .csi_dt = MIPI_CSI2_DT_RGB565, + }, { + .fourcc = V4L2_PIX_FMT_RGB24, /* rgb */ + .code = MEDIA_BUS_FMT_RGB888_1X24, + .depth = 24, + .csi_dt = MIPI_CSI2_DT_RGB888, + }, { + .fourcc = V4L2_PIX_FMT_BGR24, /* bgr */ + .code = MEDIA_BUS_FMT_BGR888_1X24, + .depth = 24, + .csi_dt = MIPI_CSI2_DT_RGB888, + }, { + /* Bayer Formats */ + .fourcc = V4L2_PIX_FMT_SBGGR8, + .code = MEDIA_BUS_FMT_SBGGR8_1X8, + .depth = 8, + .csi_dt = MIPI_CSI2_DT_RAW8, + }, { + .fourcc = V4L2_PIX_FMT_SGBRG8, + .code = MEDIA_BUS_FMT_SGBRG8_1X8, + .depth = 8, + .csi_dt = MIPI_CSI2_DT_RAW8, + }, { + .fourcc = V4L2_PIX_FMT_SGRBG8, + .code = MEDIA_BUS_FMT_SGRBG8_1X8, + .depth = 8, + .csi_dt = MIPI_CSI2_DT_RAW8, + }, { + .fourcc = V4L2_PIX_FMT_SRGGB8, + .code = MEDIA_BUS_FMT_SRGGB8_1X8, + .depth = 8, + .csi_dt = MIPI_CSI2_DT_RAW8, + }, { + .fourcc = V4L2_PIX_FMT_SBGGR10P, + .unpacked_fourcc = V4L2_PIX_FMT_SBGGR10, + .code = MEDIA_BUS_FMT_SBGGR10_1X10, + .depth = 10, + .csi_dt = MIPI_CSI2_DT_RAW10, + .unpack = UNICAM_PUM_UNPACK10, + }, { + .fourcc = V4L2_PIX_FMT_SGBRG10P, + .unpacked_fourcc = V4L2_PIX_FMT_SGBRG10, + .code = MEDIA_BUS_FMT_SGBRG10_1X10, + .depth = 10, + .csi_dt = MIPI_CSI2_DT_RAW10, + .unpack = UNICAM_PUM_UNPACK10, + }, { + .fourcc = V4L2_PIX_FMT_SGRBG10P, + .unpacked_fourcc = V4L2_PIX_FMT_SGRBG10, + .code = MEDIA_BUS_FMT_SGRBG10_1X10, + .depth = 10, + .csi_dt = MIPI_CSI2_DT_RAW10, + .unpack = UNICAM_PUM_UNPACK10, + }, { + .fourcc = V4L2_PIX_FMT_SRGGB10P, + .unpacked_fourcc = V4L2_PIX_FMT_SRGGB10, + .code = MEDIA_BUS_FMT_SRGGB10_1X10, + .depth = 10, + .csi_dt = MIPI_CSI2_DT_RAW10, + .unpack = UNICAM_PUM_UNPACK10, + }, { + .fourcc = V4L2_PIX_FMT_SBGGR12P, + .unpacked_fourcc = V4L2_PIX_FMT_SBGGR12, + .code = MEDIA_BUS_FMT_SBGGR12_1X12, + .depth = 12, + .csi_dt = MIPI_CSI2_DT_RAW12, + .unpack = UNICAM_PUM_UNPACK12, + }, { + .fourcc = V4L2_PIX_FMT_SGBRG12P, + .unpacked_fourcc = V4L2_PIX_FMT_SGBRG12, + .code = MEDIA_BUS_FMT_SGBRG12_1X12, + .depth = 12, + .csi_dt = MIPI_CSI2_DT_RAW12, + .unpack = UNICAM_PUM_UNPACK12, + }, { + .fourcc = V4L2_PIX_FMT_SGRBG12P, + .unpacked_fourcc = V4L2_PIX_FMT_SGRBG12, + .code = MEDIA_BUS_FMT_SGRBG12_1X12, + .depth = 12, + .csi_dt = MIPI_CSI2_DT_RAW12, + .unpack = UNICAM_PUM_UNPACK12, + }, { + .fourcc = V4L2_PIX_FMT_SRGGB12P, + .unpacked_fourcc = V4L2_PIX_FMT_SRGGB12, + .code = MEDIA_BUS_FMT_SRGGB12_1X12, + .depth = 12, + .csi_dt = MIPI_CSI2_DT_RAW12, + .unpack = UNICAM_PUM_UNPACK12, + }, { + .fourcc = V4L2_PIX_FMT_SBGGR14P, + .unpacked_fourcc = V4L2_PIX_FMT_SBGGR14, + .code = MEDIA_BUS_FMT_SBGGR14_1X14, + .depth = 14, + .csi_dt = MIPI_CSI2_DT_RAW14, + .unpack = UNICAM_PUM_UNPACK14, + }, { + .fourcc = V4L2_PIX_FMT_SGBRG14P, + .unpacked_fourcc = V4L2_PIX_FMT_SGBRG14, + .code = MEDIA_BUS_FMT_SGBRG14_1X14, + .depth = 14, + .csi_dt = MIPI_CSI2_DT_RAW14, + .unpack = UNICAM_PUM_UNPACK14, + }, { + .fourcc = V4L2_PIX_FMT_SGRBG14P, + .unpacked_fourcc = V4L2_PIX_FMT_SGRBG14, + .code = MEDIA_BUS_FMT_SGRBG14_1X14, + .depth = 14, + .csi_dt = MIPI_CSI2_DT_RAW14, + .unpack = UNICAM_PUM_UNPACK14, + }, { + .fourcc = V4L2_PIX_FMT_SRGGB14P, + .unpacked_fourcc = V4L2_PIX_FMT_SRGGB14, + .code = MEDIA_BUS_FMT_SRGGB14_1X14, + .depth = 14, + .csi_dt = MIPI_CSI2_DT_RAW14, + .unpack = UNICAM_PUM_UNPACK14, + }, { + /* 16 bit Bayer formats could be supported. */ + + /* Greyscale formats */ + .fourcc = V4L2_PIX_FMT_GREY, + .code = MEDIA_BUS_FMT_Y8_1X8, + .depth = 8, + .csi_dt = MIPI_CSI2_DT_RAW8, + }, { + .fourcc = V4L2_PIX_FMT_Y10P, + .unpacked_fourcc = V4L2_PIX_FMT_Y10, + .code = MEDIA_BUS_FMT_Y10_1X10, + .depth = 10, + .csi_dt = MIPI_CSI2_DT_RAW10, + .unpack = UNICAM_PUM_UNPACK10, + }, { + .fourcc = V4L2_PIX_FMT_Y12P, + .unpacked_fourcc = V4L2_PIX_FMT_Y12, + .code = MEDIA_BUS_FMT_Y12_1X12, + .depth = 12, + .csi_dt = MIPI_CSI2_DT_RAW12, + .unpack = UNICAM_PUM_UNPACK12, + }, { + .fourcc = V4L2_PIX_FMT_Y14P, + .unpacked_fourcc = V4L2_PIX_FMT_Y14, + .code = MEDIA_BUS_FMT_Y14_1X14, + .depth = 14, + .csi_dt = MIPI_CSI2_DT_RAW14, + .unpack = UNICAM_PUM_UNPACK14, + }, +}; + +static const struct unicam_format_info unicam_meta_formats[] = { + { + .fourcc = V4L2_META_FMT_GENERIC_8, + .code = MEDIA_BUS_FMT_META_8, + .depth = 8, + }, { + .fourcc = V4L2_META_FMT_GENERIC_CSI2_10, + .code = MEDIA_BUS_FMT_META_10, + .depth = 10, + }, { + .fourcc = V4L2_META_FMT_GENERIC_CSI2_12, + .code = MEDIA_BUS_FMT_META_12, + .depth = 12, + }, { + .fourcc = V4L2_META_FMT_GENERIC_CSI2_14, + .code = MEDIA_BUS_FMT_META_14, + .depth = 14, + }, +}; + +/* Format setup functions */ +static const struct unicam_format_info * +unicam_find_format_by_code(u32 code, u32 pad) +{ + const struct unicam_format_info *formats; + unsigned int num_formats; + unsigned int i; + + if (pad == UNICAM_SD_PAD_SOURCE_IMAGE) { + formats = unicam_image_formats; + num_formats = ARRAY_SIZE(unicam_image_formats); + } else { + formats = unicam_meta_formats; + num_formats = ARRAY_SIZE(unicam_meta_formats); + } + + for (i = 0; i < num_formats; i++) { + if (formats[i].code == code) + return &formats[i]; + } + + return NULL; +} + +static const struct unicam_format_info * +unicam_find_format_by_fourcc(u32 fourcc, u32 pad) +{ + const struct unicam_format_info *formats; + unsigned int num_formats; + unsigned int i; + + if (pad == UNICAM_SD_PAD_SOURCE_IMAGE) { + formats = unicam_image_formats; + num_formats = ARRAY_SIZE(unicam_image_formats); + } else { + formats = unicam_meta_formats; + num_formats = ARRAY_SIZE(unicam_meta_formats); + } + + for (i = 0; i < num_formats; ++i) { + if (formats[i].fourcc == fourcc) + return &formats[i]; + } + + return NULL; +} + +static void unicam_calc_image_size_bpl(struct unicam_device *unicam, + const struct unicam_format_info *fmtinfo, + struct v4l2_pix_format *pix) +{ + u32 min_bpl; + + v4l_bound_align_image(&pix->width, UNICAM_IMAGE_MIN_WIDTH, + UNICAM_IMAGE_MAX_WIDTH, 2, + &pix->height, UNICAM_IMAGE_MIN_HEIGHT, + UNICAM_IMAGE_MAX_HEIGHT, 0, 0); + + /* Unpacking always goes to 16bpp */ + if (pix->pixelformat == fmtinfo->unpacked_fourcc) + min_bpl = pix->width * 2; + else + min_bpl = pix->width * fmtinfo->depth / 8; + min_bpl = ALIGN(min_bpl, UNICAM_IMAGE_BPL_ALIGNMENT); + + pix->bytesperline = ALIGN(pix->bytesperline, UNICAM_IMAGE_BPL_ALIGNMENT); + pix->bytesperline = clamp_t(unsigned int, pix->bytesperline, min_bpl, + UNICAM_IMAGE_MAX_BPL); + + pix->sizeimage = pix->height * pix->bytesperline; +} + +static void unicam_calc_meta_size_bpl(struct unicam_device *unicam, + const struct unicam_format_info *fmtinfo, + struct v4l2_meta_format *meta) +{ + v4l_bound_align_image(&meta->width, UNICAM_META_MIN_WIDTH, + UNICAM_META_MAX_WIDTH, 0, + &meta->height, UNICAM_META_MIN_HEIGHT, + UNICAM_META_MAX_HEIGHT, 0, 0); + + meta->bytesperline = ALIGN(meta->width * fmtinfo->depth / 8, + UNICAM_DMA_BPL_ALIGNMENT); + meta->buffersize = meta->height * meta->bytesperline; +} + +/* ----------------------------------------------------------------------------- + * Hardware handling + */ + +static inline void unicam_clk_write(struct unicam_device *unicam, u32 val) +{ + /* Pass the CM_PASSWORD along with the value. */ + writel(val | 0x5a000000, unicam->clk_gate_base); +} + +static inline u32 unicam_reg_read(struct unicam_device *unicam, u32 offset) +{ + return readl(unicam->base + offset); +} + +static inline void unicam_reg_write(struct unicam_device *unicam, u32 offset, u32 val) +{ + writel(val, unicam->base + offset); +} + +static inline int unicam_get_field(u32 value, u32 mask) +{ + return (value & mask) >> __ffs(mask); +} + +static inline void unicam_set_field(u32 *valp, u32 field, u32 mask) +{ + u32 val = *valp; + + val &= ~mask; + val |= (field << __ffs(mask)) & mask; + *valp = val; +} + +static inline void unicam_reg_write_field(struct unicam_device *unicam, u32 offset, + u32 field, u32 mask) +{ + u32 val = unicam_reg_read(unicam, offset); + + unicam_set_field(&val, field, mask); + unicam_reg_write(unicam, offset, val); +} + +static void unicam_wr_dma_addr(struct unicam_node *node, + struct unicam_buffer *buf) +{ + dma_addr_t endaddr = buf->dma_addr + buf->size; + + if (node->id == UNICAM_IMAGE_NODE) { + unicam_reg_write(node->dev, UNICAM_IBSA0, buf->dma_addr); + unicam_reg_write(node->dev, UNICAM_IBEA0, endaddr); + } else { + unicam_reg_write(node->dev, UNICAM_DBSA0, buf->dma_addr); + unicam_reg_write(node->dev, UNICAM_DBEA0, endaddr); + } +} + +static unsigned int unicam_get_lines_done(struct unicam_device *unicam) +{ + struct unicam_node *node = &unicam->node[UNICAM_IMAGE_NODE]; + unsigned int stride = node->fmt.fmt.pix.bytesperline; + struct unicam_buffer *frm = node->cur_frm; + dma_addr_t cur_addr; + + if (!frm) + return 0; + + cur_addr = unicam_reg_read(unicam, UNICAM_IBWP); + return (unsigned int)(cur_addr - frm->dma_addr) / stride; +} + +static void unicam_schedule_next_buffer(struct unicam_node *node) +{ + struct unicam_buffer *buf; + + buf = list_first_entry(&node->dma_queue, struct unicam_buffer, list); + node->next_frm = buf; + list_del(&buf->list); + + unicam_wr_dma_addr(node, buf); +} + +static void unicam_schedule_dummy_buffer(struct unicam_node *node) +{ + int node_id = is_image_node(node) ? UNICAM_IMAGE_NODE : UNICAM_METADATA_NODE; + + dev_dbg(node->dev->dev, "Scheduling dummy buffer for node %d\n", node_id); + + unicam_wr_dma_addr(node, &node->dummy_buf); + + node->next_frm = NULL; +} + +static void unicam_process_buffer_complete(struct unicam_node *node, + unsigned int sequence) +{ + node->cur_frm->vb.field = node->fmt.fmt.pix.field; + node->cur_frm->vb.sequence = sequence; + + vb2_buffer_done(&node->cur_frm->vb.vb2_buf, VB2_BUF_STATE_DONE); +} + +static void unicam_queue_event_sof(struct unicam_device *unicam) +{ + struct unicam_node *node = &unicam->node[UNICAM_IMAGE_NODE]; + struct v4l2_event event = { + .type = V4L2_EVENT_FRAME_SYNC, + .u.frame_sync.frame_sequence = unicam->sequence, + }; + + v4l2_event_queue(&node->video_dev, &event); +} + +static irqreturn_t unicam_isr(int irq, void *dev) +{ + struct unicam_device *unicam = dev; + unsigned int lines_done = unicam_get_lines_done(dev); + unsigned int sequence = unicam->sequence; + unsigned int i; + u32 ista, sta; + bool fe; + u64 ts; + + sta = unicam_reg_read(unicam, UNICAM_STA); + /* Write value back to clear the interrupts */ + unicam_reg_write(unicam, UNICAM_STA, sta); + + ista = unicam_reg_read(unicam, UNICAM_ISTA); + /* Write value back to clear the interrupts */ + unicam_reg_write(unicam, UNICAM_ISTA, ista); + + dev_dbg(unicam->dev, "ISR: ISTA: 0x%X, STA: 0x%X, sequence %d, lines done %d\n", + ista, sta, sequence, lines_done); + + if (!(sta & (UNICAM_IS | UNICAM_PI0))) + return IRQ_HANDLED; + + /* + * Look for either the Frame End interrupt or the Packet Capture status + * to signal a frame end. + */ + fe = ista & UNICAM_FEI || sta & UNICAM_PI0; + + /* + * We must run the frame end handler first. If we have a valid next_frm + * and we get a simultaneout FE + FS interrupt, running the FS handler + * first would null out the next_frm ptr and we would have lost the + * buffer forever. + */ + if (fe) { + /* + * Ensure we have swapped buffers already as we can't + * stop the peripheral. If no buffer is available, use a + * dummy buffer to dump out frames until we get a new buffer + * to use. + */ + for (i = 0; i < ARRAY_SIZE(unicam->node); i++) { + struct unicam_node *node = &unicam->node[i]; + + if (!vb2_start_streaming_called(&node->buffer_queue)) + continue; + + /* + * If cur_frm == next_frm, it means we have not had + * a chance to swap buffers, likely due to having + * multiple interrupts occurring simultaneously (like FE + * + FS + LS). In this case, we cannot signal the buffer + * as complete, as the HW will reuse that buffer. + */ + if (node->cur_frm && node->cur_frm != node->next_frm) + unicam_process_buffer_complete(node, sequence); + node->cur_frm = node->next_frm; + } + unicam->sequence++; + } + + if (ista & UNICAM_FSI) { + /* + * Timestamp is to be when the first data byte was captured, + * aka frame start. + */ + ts = ktime_get_ns(); + for (i = 0; i < ARRAY_SIZE(unicam->node); i++) { + struct unicam_node *node = &unicam->node[i]; + + if (!vb2_start_streaming_called(&node->buffer_queue)) + continue; + + if (node->cur_frm) + node->cur_frm->vb.vb2_buf.timestamp = ts; + else + dev_dbg(unicam->v4l2_dev.dev, + "ISR: [%d] Dropping frame, buffer not available at FS\n", + i); + /* + * Set the next frame output to go to a dummy frame + * if we have not managed to obtain another frame + * from the queue. + */ + unicam_schedule_dummy_buffer(node); + } + + unicam_queue_event_sof(unicam); + } + + /* + * Cannot swap buffer at frame end, there may be a race condition + * where the HW does not actually swap it if the new frame has + * already started. + */ + if (ista & (UNICAM_FSI | UNICAM_LCI) && !fe) { + for (i = 0; i < ARRAY_SIZE(unicam->node); i++) { + struct unicam_node *node = &unicam->node[i]; + + if (!vb2_start_streaming_called(&node->buffer_queue)) + continue; + + spin_lock(&node->dma_queue_lock); + if (!list_empty(&node->dma_queue) && !node->next_frm) + unicam_schedule_next_buffer(node); + spin_unlock(&node->dma_queue_lock); + } + } + + if (unicam_reg_read(unicam, UNICAM_ICTL) & UNICAM_FCM) { + /* Switch out of trigger mode if selected */ + unicam_reg_write_field(unicam, UNICAM_ICTL, 1, UNICAM_TFC); + unicam_reg_write_field(unicam, UNICAM_ICTL, 0, UNICAM_FCM); + } + return IRQ_HANDLED; +} + +static void unicam_set_packing_config(struct unicam_device *unicam, + const struct unicam_format_info *fmtinfo) +{ + struct unicam_node *node = &unicam->node[UNICAM_IMAGE_NODE]; + u32 pack, unpack; + u32 val; + + if (node->fmt.fmt.pix.pixelformat == fmtinfo->fourcc) { + unpack = UNICAM_PUM_NONE; + pack = UNICAM_PPM_NONE; + } else { + unpack = fmtinfo->unpack; + /* Repacking is always to 16bpp */ + pack = UNICAM_PPM_PACK16; + } + + val = 0; + unicam_set_field(&val, unpack, UNICAM_PUM_MASK); + unicam_set_field(&val, pack, UNICAM_PPM_MASK); + unicam_reg_write(unicam, UNICAM_IPIPE, val); +} + +static void unicam_cfg_image_id(struct unicam_device *unicam, u8 vc, u8 dt) +{ + if (unicam->bus_type == V4L2_MBUS_CSI2_DPHY) { + /* CSI2 mode */ + unicam_reg_write(unicam, UNICAM_IDI0, (vc << 6) | dt); + } else { + /* CCP2 mode */ + unicam_reg_write(unicam, UNICAM_IDI0, 0x80 | dt); + } +} + +static void unicam_enable_ed(struct unicam_device *unicam) +{ + u32 val = unicam_reg_read(unicam, UNICAM_DCS); + + unicam_set_field(&val, 2, UNICAM_EDL_MASK); + /* Do not wrap at the end of the embedded data buffer */ + unicam_set_field(&val, 0, UNICAM_DBOB); + + unicam_reg_write(unicam, UNICAM_DCS, val); +} + +static int unicam_get_image_vc_dt(struct unicam_device *unicam, + struct v4l2_subdev_state *state, + u8 *vc, u8 *dt) +{ + struct v4l2_mbus_frame_desc fd; + u32 stream; + int ret; + + ret = v4l2_subdev_routing_find_opposite_end(&state->routing, + UNICAM_SD_PAD_SOURCE_IMAGE, + 0, NULL, &stream); + if (ret) + return ret; + + ret = v4l2_subdev_call(unicam->sensor.subdev, pad, get_frame_desc, + unicam->sensor.pad->index, &fd); + if (ret) + return ret; + + /* Only CSI-2 supports DTs. */ + if (fd.type != V4L2_MBUS_FRAME_DESC_TYPE_CSI2) + return -EINVAL; + + for (unsigned int i = 0; i < fd.num_entries; ++i) { + const struct v4l2_mbus_frame_desc_entry *fde = &fd.entry[i]; + + if (fde->stream == stream) { + *vc = fde->bus.csi2.vc; + *dt = fde->bus.csi2.dt; + return 0; + } + } + + return -EINVAL; +} + +static void unicam_start_rx(struct unicam_device *unicam, + struct v4l2_subdev_state *state) +{ + struct unicam_node *node = &unicam->node[UNICAM_IMAGE_NODE]; + const struct unicam_format_info *fmtinfo; + const struct v4l2_mbus_framefmt *fmt; + unsigned int line_int_freq; + u8 vc, dt; + u32 val; + int ret; + + fmt = v4l2_subdev_state_get_format(state, UNICAM_SD_PAD_SOURCE_IMAGE, 0); + fmtinfo = unicam_find_format_by_code(fmt->code, + UNICAM_SD_PAD_SOURCE_IMAGE); + if (WARN_ON(!fmtinfo)) + return; + + /* + * Enable lane clocks. The register is structured as follows: + * + * [9:8] - DAT3 + * [7:6] - DAT2 + * [5:4] - DAT1 + * [3:2] - DAT0 + * [1:0] - CLK + * + * Enabled lane must be set to b01, and disabled lanes to b00. The clock + * lane is always enabled. + */ + val = 0x155 & GENMASK(unicam->pipe.num_data_lanes * 2 + 1, 0); + unicam_clk_write(unicam, val); + + /* Basic init */ + unicam_reg_write(unicam, UNICAM_CTRL, UNICAM_MEM); + + /* Enable analogue control, and leave in reset. */ + val = UNICAM_AR; + unicam_set_field(&val, 7, UNICAM_CTATADJ_MASK); + unicam_set_field(&val, 7, UNICAM_PTATADJ_MASK); + unicam_reg_write(unicam, UNICAM_ANA, val); + usleep_range(1000, 2000); + + /* Come out of reset */ + unicam_reg_write_field(unicam, UNICAM_ANA, 0, UNICAM_AR); + + /* Peripheral reset */ + unicam_reg_write_field(unicam, UNICAM_CTRL, 1, UNICAM_CPR); + unicam_reg_write_field(unicam, UNICAM_CTRL, 0, UNICAM_CPR); + + unicam_reg_write_field(unicam, UNICAM_CTRL, 0, UNICAM_CPE); + + /* Enable Rx control. */ + val = unicam_reg_read(unicam, UNICAM_CTRL); + if (unicam->bus_type == V4L2_MBUS_CSI2_DPHY) { + unicam_set_field(&val, UNICAM_CPM_CSI2, UNICAM_CPM_MASK); + unicam_set_field(&val, UNICAM_DCM_STROBE, UNICAM_DCM_MASK); + } else { + unicam_set_field(&val, UNICAM_CPM_CCP2, UNICAM_CPM_MASK); + unicam_set_field(&val, unicam->bus_flags, UNICAM_DCM_MASK); + } + /* Packet framer timeout */ + unicam_set_field(&val, 0xf, UNICAM_PFT_MASK); + unicam_set_field(&val, 128, UNICAM_OET_MASK); + unicam_reg_write(unicam, UNICAM_CTRL, val); + + unicam_reg_write(unicam, UNICAM_IHWIN, 0); + unicam_reg_write(unicam, UNICAM_IVWIN, 0); + + /* AXI bus access QoS setup */ + val = unicam_reg_read(unicam, UNICAM_PRI); + unicam_set_field(&val, 0, UNICAM_BL_MASK); + unicam_set_field(&val, 0, UNICAM_BS_MASK); + unicam_set_field(&val, 0xe, UNICAM_PP_MASK); + unicam_set_field(&val, 8, UNICAM_NP_MASK); + unicam_set_field(&val, 2, UNICAM_PT_MASK); + unicam_set_field(&val, 1, UNICAM_PE); + unicam_reg_write(unicam, UNICAM_PRI, val); + + unicam_reg_write_field(unicam, UNICAM_ANA, 0, UNICAM_DDL); + + /* Always start in trigger frame capture mode (UNICAM_FCM set) */ + val = UNICAM_FSIE | UNICAM_FEIE | UNICAM_FCM | UNICAM_IBOB; + line_int_freq = max(fmt->height >> 2, 128); + unicam_set_field(&val, line_int_freq, UNICAM_LCIE_MASK); + unicam_reg_write(unicam, UNICAM_ICTL, val); + unicam_reg_write(unicam, UNICAM_STA, UNICAM_STA_MASK_ALL); + unicam_reg_write(unicam, UNICAM_ISTA, UNICAM_ISTA_MASK_ALL); + + /* tclk_term_en */ + unicam_reg_write_field(unicam, UNICAM_CLT, 2, UNICAM_CLT1_MASK); + /* tclk_settle */ + unicam_reg_write_field(unicam, UNICAM_CLT, 6, UNICAM_CLT2_MASK); + /* td_term_en */ + unicam_reg_write_field(unicam, UNICAM_DLT, 2, UNICAM_DLT1_MASK); + /* ths_settle */ + unicam_reg_write_field(unicam, UNICAM_DLT, 6, UNICAM_DLT2_MASK); + /* trx_enable */ + unicam_reg_write_field(unicam, UNICAM_DLT, 0, UNICAM_DLT3_MASK); + + unicam_reg_write_field(unicam, UNICAM_CTRL, 0, UNICAM_SOE); + + /* Packet compare setup - required to avoid missing frame ends */ + val = 0; + unicam_set_field(&val, 1, UNICAM_PCE); + unicam_set_field(&val, 1, UNICAM_GI); + unicam_set_field(&val, 1, UNICAM_CPH); + unicam_set_field(&val, 0, UNICAM_PCVC_MASK); + unicam_set_field(&val, 1, UNICAM_PCDT_MASK); + unicam_reg_write(unicam, UNICAM_CMP0, val); + + /* Enable clock lane and set up terminations */ + val = 0; + if (unicam->bus_type == V4L2_MBUS_CSI2_DPHY) { + /* CSI2 */ + unicam_set_field(&val, 1, UNICAM_CLE); + unicam_set_field(&val, 1, UNICAM_CLLPE); + if (!(unicam->bus_flags & V4L2_MBUS_CSI2_NONCONTINUOUS_CLOCK)) { + unicam_set_field(&val, 1, UNICAM_CLTRE); + unicam_set_field(&val, 1, UNICAM_CLHSE); + } + } else { + /* CCP2 */ + unicam_set_field(&val, 1, UNICAM_CLE); + unicam_set_field(&val, 1, UNICAM_CLHSE); + unicam_set_field(&val, 1, UNICAM_CLTRE); + } + unicam_reg_write(unicam, UNICAM_CLK, val); + + /* + * Enable required data lanes with appropriate terminations. + * The same value needs to be written to UNICAM_DATn registers for + * the active lanes, and 0 for inactive ones. + */ + val = 0; + if (unicam->bus_type == V4L2_MBUS_CSI2_DPHY) { + /* CSI2 */ + unicam_set_field(&val, 1, UNICAM_DLE); + unicam_set_field(&val, 1, UNICAM_DLLPE); + if (!(unicam->bus_flags & V4L2_MBUS_CSI2_NONCONTINUOUS_CLOCK)) { + unicam_set_field(&val, 1, UNICAM_DLTRE); + unicam_set_field(&val, 1, UNICAM_DLHSE); + } + } else { + /* CCP2 */ + unicam_set_field(&val, 1, UNICAM_DLE); + unicam_set_field(&val, 1, UNICAM_DLHSE); + unicam_set_field(&val, 1, UNICAM_DLTRE); + } + unicam_reg_write(unicam, UNICAM_DAT0, val); + + if (unicam->pipe.num_data_lanes == 1) + val = 0; + unicam_reg_write(unicam, UNICAM_DAT1, val); + + if (unicam->max_data_lanes > 2) { + /* + * Registers UNICAM_DAT2 and UNICAM_DAT3 only valid if the + * instance supports more than 2 data lanes. + */ + if (unicam->pipe.num_data_lanes == 2) + val = 0; + unicam_reg_write(unicam, UNICAM_DAT2, val); + + if (unicam->pipe.num_data_lanes == 3) + val = 0; + unicam_reg_write(unicam, UNICAM_DAT3, val); + } + + unicam_reg_write(unicam, UNICAM_IBLS, + node->fmt.fmt.pix.bytesperline); + unicam_wr_dma_addr(node, node->cur_frm); + unicam_set_packing_config(unicam, fmtinfo); + + ret = unicam_get_image_vc_dt(unicam, state, &vc, &dt); + if (ret) { + /* + * If the source doesn't support frame descriptors, default to + * VC 0 and use the DT corresponding to the format. + */ + vc = 0; + dt = fmtinfo->csi_dt; + } + + unicam_cfg_image_id(unicam, vc, dt); + + val = unicam_reg_read(unicam, UNICAM_MISC); + unicam_set_field(&val, 1, UNICAM_FL0); + unicam_set_field(&val, 1, UNICAM_FL1); + unicam_reg_write(unicam, UNICAM_MISC, val); + + /* Enable peripheral */ + unicam_reg_write_field(unicam, UNICAM_CTRL, 1, UNICAM_CPE); + + /* Load image pointers */ + unicam_reg_write_field(unicam, UNICAM_ICTL, 1, UNICAM_LIP_MASK); + + /* + * Enable trigger only for the first frame to + * sync correctly to the FS from the source. + */ + unicam_reg_write_field(unicam, UNICAM_ICTL, 1, UNICAM_TFC); +} + +static void unicam_start_metadata(struct unicam_device *unicam) +{ + struct unicam_node *node = &unicam->node[UNICAM_METADATA_NODE]; + + unicam_enable_ed(unicam); + unicam_wr_dma_addr(node, node->cur_frm); + unicam_reg_write_field(unicam, UNICAM_DCS, 1, UNICAM_LDP); +} + +static void unicam_disable(struct unicam_device *unicam) +{ + /* Analogue lane control disable */ + unicam_reg_write_field(unicam, UNICAM_ANA, 1, UNICAM_DDL); + + /* Stop the output engine */ + unicam_reg_write_field(unicam, UNICAM_CTRL, 1, UNICAM_SOE); + + /* Disable the data lanes. */ + unicam_reg_write(unicam, UNICAM_DAT0, 0); + unicam_reg_write(unicam, UNICAM_DAT1, 0); + + if (unicam->max_data_lanes > 2) { + unicam_reg_write(unicam, UNICAM_DAT2, 0); + unicam_reg_write(unicam, UNICAM_DAT3, 0); + } + + /* Peripheral reset */ + unicam_reg_write_field(unicam, UNICAM_CTRL, 1, UNICAM_CPR); + usleep_range(50, 100); + unicam_reg_write_field(unicam, UNICAM_CTRL, 0, UNICAM_CPR); + + /* Disable peripheral */ + unicam_reg_write_field(unicam, UNICAM_CTRL, 0, UNICAM_CPE); + + /* Clear ED setup */ + unicam_reg_write(unicam, UNICAM_DCS, 0); + + /* Disable all lane clocks */ + unicam_clk_write(unicam, 0); +} + +/* ----------------------------------------------------------------------------- + * V4L2 subdev operations + */ + +static int __unicam_subdev_set_routing(struct v4l2_subdev *sd, + struct v4l2_subdev_state *state, + struct v4l2_subdev_krouting *routing) +{ + struct v4l2_subdev_route *route; + int ret; + + ret = v4l2_subdev_routing_validate(sd, routing, + V4L2_SUBDEV_ROUTING_ONLY_1_TO_1); + if (ret) + return ret; + + ret = v4l2_subdev_set_routing(sd, state, routing); + if (ret) + return ret; + + for_each_active_route(&state->routing, route) { + const struct v4l2_mbus_framefmt *def_fmt; + struct v4l2_mbus_framefmt *fmt; + + if (route->source_pad == UNICAM_SD_PAD_SOURCE_IMAGE) + def_fmt = &unicam_default_image_format; + else + def_fmt = &unicam_default_meta_format; + + fmt = v4l2_subdev_state_get_format(state, route->sink_pad, + route->sink_stream); + *fmt = *def_fmt; + fmt = v4l2_subdev_state_get_format(state, route->source_pad, + route->source_stream); + *fmt = *def_fmt; + } + + return 0; +} + +static int unicam_subdev_init_state(struct v4l2_subdev *sd, + struct v4l2_subdev_state *state) +{ + struct v4l2_subdev_route routes[] = { + { + .sink_pad = UNICAM_SD_PAD_SINK, + .sink_stream = 0, + .source_pad = UNICAM_SD_PAD_SOURCE_IMAGE, + .source_stream = 0, + .flags = V4L2_SUBDEV_ROUTE_FL_ACTIVE, + }, + }; + + struct v4l2_subdev_krouting routing = { + .len_routes = ARRAY_SIZE(routes), + .num_routes = ARRAY_SIZE(routes), + .routes = routes, + }; + + /* Initialize routing to single route to the fist source pad. */ + return __unicam_subdev_set_routing(sd, state, &routing); +} + +static int unicam_subdev_enum_mbus_code(struct v4l2_subdev *sd, + struct v4l2_subdev_state *state, + struct v4l2_subdev_mbus_code_enum *code) +{ + u32 pad, stream; + int ret; + + ret = v4l2_subdev_routing_find_opposite_end(&state->routing, + code->pad, code->stream, + &pad, &stream); + if (ret) + return ret; + + if (unicam_sd_pad_is_source(code->pad)) { + /* No transcoding, source and sink codes must match. */ + const struct v4l2_mbus_framefmt *fmt; + + fmt = v4l2_subdev_state_get_format(state, pad, stream); + if (!fmt) + return -EINVAL; + + if (code->index > 0) + return -EINVAL; + + code->code = fmt->code; + } else { + const struct unicam_format_info *formats; + unsigned int num_formats; + + if (pad == UNICAM_SD_PAD_SOURCE_IMAGE) { + formats = unicam_image_formats; + num_formats = ARRAY_SIZE(unicam_image_formats); + } else { + formats = unicam_meta_formats; + num_formats = ARRAY_SIZE(unicam_meta_formats); + } + + if (code->index >= num_formats) + return -EINVAL; + + code->code = formats[code->index].code; + } + + return 0; +} + +static int unicam_subdev_enum_frame_size(struct v4l2_subdev *sd, + struct v4l2_subdev_state *state, + struct v4l2_subdev_frame_size_enum *fse) +{ + u32 pad, stream; + int ret; + + if (fse->index > 0) + return -EINVAL; + + ret = v4l2_subdev_routing_find_opposite_end(&state->routing, fse->pad, + fse->stream, &pad, + &stream); + if (ret) + return ret; + + if (unicam_sd_pad_is_source(fse->pad)) { + /* No transcoding, source and sink formats must match. */ + const struct v4l2_mbus_framefmt *fmt; + + fmt = v4l2_subdev_state_get_format(state, pad, stream); + if (!fmt) + return -EINVAL; + + if (fse->code != fmt->code) + return -EINVAL; + + fse->min_width = fmt->width; + fse->max_width = fmt->width; + fse->min_height = fmt->height; + fse->max_height = fmt->height; + } else { + const struct unicam_format_info *fmtinfo; + + fmtinfo = unicam_find_format_by_code(fse->code, pad); + if (!fmtinfo) + return -EINVAL; + + if (pad == UNICAM_SD_PAD_SOURCE_IMAGE) { + fse->min_width = UNICAM_IMAGE_MIN_WIDTH; + fse->max_width = UNICAM_IMAGE_MAX_WIDTH; + fse->min_height = UNICAM_IMAGE_MIN_HEIGHT; + fse->max_height = UNICAM_IMAGE_MAX_HEIGHT; + } else { + fse->min_width = UNICAM_META_MIN_WIDTH; + fse->max_width = UNICAM_META_MAX_WIDTH; + fse->min_height = UNICAM_META_MIN_HEIGHT; + fse->max_height = UNICAM_META_MAX_HEIGHT; + } + } + + return 0; +} + +static int unicam_subdev_set_format(struct v4l2_subdev *sd, + struct v4l2_subdev_state *state, + struct v4l2_subdev_format *format) +{ + struct unicam_device *unicam = sd_to_unicam_device(sd); + struct v4l2_mbus_framefmt *sink_format, *source_format; + const struct unicam_format_info *fmtinfo; + u32 source_pad, source_stream; + int ret; + + if (format->which == V4L2_SUBDEV_FORMAT_ACTIVE && + unicam->subdev.enabled_streams) + return -EBUSY; + + /* No transcoding, source and sink formats must match. */ + if (unicam_sd_pad_is_source(format->pad)) + return v4l2_subdev_get_fmt(sd, state, format); + + /* + * Allowed formats for the stream on the sink pad depend on what source + * pad the stream is routed to. Find the corresponding source pad and + * use it to validate the media bus code. + */ + ret = v4l2_subdev_routing_find_opposite_end(&state->routing, + format->pad, format->stream, + &source_pad, &source_stream); + if (ret) + return ret; + + fmtinfo = unicam_find_format_by_code(format->format.code, source_pad); + if (!fmtinfo) { + fmtinfo = source_pad == UNICAM_SD_PAD_SOURCE_IMAGE + ? &unicam_image_formats[0] : &unicam_meta_formats[0]; + format->format.code = fmtinfo->code; + } + + if (source_pad == UNICAM_SD_PAD_SOURCE_IMAGE) { + format->format.width = clamp_t(unsigned int, + format->format.width, + UNICAM_IMAGE_MIN_WIDTH, + UNICAM_IMAGE_MAX_WIDTH); + format->format.height = clamp_t(unsigned int, + format->format.height, + UNICAM_IMAGE_MIN_HEIGHT, + UNICAM_IMAGE_MAX_HEIGHT); + format->format.field = V4L2_FIELD_NONE; + } else { + format->format.width = clamp_t(unsigned int, + format->format.width, + UNICAM_META_MIN_WIDTH, + UNICAM_META_MAX_WIDTH); + format->format.height = clamp_t(unsigned int, + format->format.height, + UNICAM_META_MIN_HEIGHT, + UNICAM_META_MAX_HEIGHT); + format->format.field = V4L2_FIELD_NONE; + + /* Colorspace don't apply to metadata. */ + format->format.colorspace = 0; + format->format.ycbcr_enc = 0; + format->format.quantization = 0; + format->format.xfer_func = 0; + } + + sink_format = v4l2_subdev_state_get_format(state, format->pad, + format->stream); + source_format = v4l2_subdev_state_get_format(state, source_pad, + source_stream); + *sink_format = format->format; + *source_format = format->format; + + return 0; +} + +static int unicam_subdev_set_routing(struct v4l2_subdev *sd, + struct v4l2_subdev_state *state, + enum v4l2_subdev_format_whence which, + struct v4l2_subdev_krouting *routing) +{ + struct unicam_device *unicam = sd_to_unicam_device(sd); + + if (which == V4L2_SUBDEV_FORMAT_ACTIVE && unicam->subdev.enabled_streams) + return -EBUSY; + + return __unicam_subdev_set_routing(sd, state, routing); +} + +static int unicam_sd_enable_streams(struct v4l2_subdev *sd, + struct v4l2_subdev_state *state, u32 pad, + u64 streams_mask) +{ + struct unicam_device *unicam = sd_to_unicam_device(sd); + u32 other_pad, other_stream; + int ret; + + if (!unicam->subdev.enabled_streams) { + /* Configure and start Unicam. */ + unicam->sequence = 0; + + if (unicam->pipe.nodes & BIT(UNICAM_METADATA_NODE)) + unicam_start_metadata(unicam); + + unicam_start_rx(unicam, state); + } + + ret = v4l2_subdev_routing_find_opposite_end(&state->routing, pad, 0, + &other_pad, &other_stream); + if (ret) + return ret; + + ret = v4l2_subdev_enable_streams(unicam->sensor.subdev, + unicam->sensor.pad->index, + BIT(other_stream)); + if (ret) { + dev_err(unicam->dev, "stream on failed in subdev\n"); + return ret; + } + + unicam->subdev.enabled_streams |= BIT(other_stream); + + return 0; +} + +static int unicam_sd_disable_streams(struct v4l2_subdev *sd, + struct v4l2_subdev_state *state, u32 pad, + u64 streams_mask) +{ + struct unicam_device *unicam = sd_to_unicam_device(sd); + u32 other_pad, other_stream; + int ret; + + ret = v4l2_subdev_routing_find_opposite_end(&state->routing, pad, 0, + &other_pad, &other_stream); + if (ret) + return ret; + + v4l2_subdev_disable_streams(unicam->sensor.subdev, + unicam->sensor.pad->index, + BIT(other_stream)); + + unicam->subdev.enabled_streams &= ~BIT(other_stream); + + if (!unicam->subdev.enabled_streams) + unicam_disable(unicam); + + return 0; +} + +static const struct v4l2_subdev_pad_ops unicam_subdev_pad_ops = { + .enum_mbus_code = unicam_subdev_enum_mbus_code, + .enum_frame_size = unicam_subdev_enum_frame_size, + .get_fmt = v4l2_subdev_get_fmt, + .set_fmt = unicam_subdev_set_format, + .set_routing = unicam_subdev_set_routing, + .enable_streams = unicam_sd_enable_streams, + .disable_streams = unicam_sd_disable_streams, +}; + +static const struct v4l2_subdev_ops unicam_subdev_ops = { + .pad = &unicam_subdev_pad_ops, +}; + +static const struct v4l2_subdev_internal_ops unicam_subdev_internal_ops = { + .init_state = unicam_subdev_init_state, +}; + +static const struct media_entity_operations unicam_subdev_media_ops = { + .link_validate = v4l2_subdev_link_validate, + .has_pad_interdep = v4l2_subdev_has_pad_interdep, +}; + +static int unicam_subdev_init(struct unicam_device *unicam) +{ + struct v4l2_subdev *sd = &unicam->subdev.sd; + int ret; + + v4l2_subdev_init(sd, &unicam_subdev_ops); + sd->internal_ops = &unicam_subdev_internal_ops; + v4l2_set_subdevdata(sd, unicam); + + sd->entity.function = MEDIA_ENT_F_VID_IF_BRIDGE; + sd->entity.ops = &unicam_subdev_media_ops; + sd->dev = unicam->dev; + sd->owner = THIS_MODULE; + sd->flags = V4L2_SUBDEV_FL_HAS_DEVNODE | V4L2_SUBDEV_FL_STREAMS; + + strscpy(sd->name, "unicam", sizeof(sd->name)); + + unicam->subdev.pads[UNICAM_SD_PAD_SINK].flags = MEDIA_PAD_FL_SINK; + unicam->subdev.pads[UNICAM_SD_PAD_SOURCE_IMAGE].flags = MEDIA_PAD_FL_SOURCE; + unicam->subdev.pads[UNICAM_SD_PAD_SOURCE_METADATA].flags = MEDIA_PAD_FL_SOURCE; + + ret = media_entity_pads_init(&sd->entity, ARRAY_SIZE(unicam->subdev.pads), + unicam->subdev.pads); + if (ret) { + dev_err(unicam->dev, "Failed to initialize media entity: %d\n", + ret); + return ret; + } + + ret = v4l2_subdev_init_finalize(sd); + if (ret) { + dev_err(unicam->dev, "Failed to initialize subdev: %d\n", ret); + goto err_entity; + } + + ret = v4l2_device_register_subdev(&unicam->v4l2_dev, sd); + if (ret) { + dev_err(unicam->dev, "Failed to register subdev: %d\n", ret); + goto err_subdev; + } + + return 0; + +err_subdev: + v4l2_subdev_cleanup(sd); +err_entity: + media_entity_cleanup(&sd->entity); + return ret; +} + +static void unicam_subdev_cleanup(struct unicam_device *unicam) +{ + v4l2_subdev_cleanup(&unicam->subdev.sd); + media_entity_cleanup(&unicam->subdev.sd.entity); +} + +/* ----------------------------------------------------------------------------- + * Videobuf2 queue operations + */ + +static int unicam_queue_setup(struct vb2_queue *vq, unsigned int *nbuffers, + unsigned int *nplanes, unsigned int sizes[], + struct device *alloc_devs[]) +{ + struct unicam_node *node = vb2_get_drv_priv(vq); + u32 size = is_image_node(node) ? node->fmt.fmt.pix.sizeimage + : node->fmt.fmt.meta.buffersize; + + if (*nplanes) { + if (sizes[0] < size) { + dev_dbg(node->dev->dev, "sizes[0] %i < size %u\n", + sizes[0], size); + return -EINVAL; + } + size = sizes[0]; + } + + *nplanes = 1; + sizes[0] = size; + + return 0; +} + +static int unicam_buffer_prepare(struct vb2_buffer *vb) +{ + struct unicam_node *node = vb2_get_drv_priv(vb->vb2_queue); + struct unicam_buffer *buf = to_unicam_buffer(vb); + u32 size = is_image_node(node) ? node->fmt.fmt.pix.sizeimage + : node->fmt.fmt.meta.buffersize; + + if (vb2_plane_size(vb, 0) < size) { + dev_dbg(node->dev->dev, + "data will not fit into plane (%lu < %u)\n", + vb2_plane_size(vb, 0), size); + return -EINVAL; + } + + buf->dma_addr = vb2_dma_contig_plane_dma_addr(&buf->vb.vb2_buf, 0); + buf->size = size; + + vb2_set_plane_payload(&buf->vb.vb2_buf, 0, size); + + return 0; +} + +static void unicam_return_buffers(struct unicam_node *node, + enum vb2_buffer_state state) +{ + struct unicam_buffer *buf, *tmp; + + list_for_each_entry_safe(buf, tmp, &node->dma_queue, list) { + list_del(&buf->list); + vb2_buffer_done(&buf->vb.vb2_buf, state); + } + + if (node->cur_frm) + vb2_buffer_done(&node->cur_frm->vb.vb2_buf, + state); + if (node->next_frm && node->cur_frm != node->next_frm) + vb2_buffer_done(&node->next_frm->vb.vb2_buf, + state); + + node->cur_frm = NULL; + node->next_frm = NULL; +} + +static int unicam_num_data_lanes(struct unicam_device *unicam) +{ + struct v4l2_mbus_config mbus_config = { 0 }; + unsigned int num_data_lanes; + int ret; + + if (unicam->bus_type != V4L2_MBUS_CSI2_DPHY) + return unicam->max_data_lanes; + + ret = v4l2_subdev_call(unicam->sensor.subdev, pad, get_mbus_config, + unicam->sensor.pad->index, &mbus_config); + if (ret == -ENOIOCTLCMD) + return unicam->max_data_lanes; + + if (ret < 0) { + dev_err(unicam->dev, "Failed to get mbus config: %d\n", ret); + return ret; + } + + num_data_lanes = mbus_config.bus.mipi_csi2.num_data_lanes; + + if (num_data_lanes != 1 && num_data_lanes != 2 && num_data_lanes != 4) { + dev_err(unicam->dev, + "Device %s has requested %u data lanes, invalid\n", + unicam->sensor.subdev->name, num_data_lanes); + return -EINVAL; + } + + if (num_data_lanes > unicam->max_data_lanes) { + dev_err(unicam->dev, + "Device %s has requested %u data lanes, >%u configured in DT\n", + unicam->sensor.subdev->name, num_data_lanes, + unicam->max_data_lanes); + return -EINVAL; + } + + return num_data_lanes; +} + +static int unicam_start_streaming(struct vb2_queue *vq, unsigned int count) +{ + struct unicam_node *node = vb2_get_drv_priv(vq); + struct unicam_device *unicam = node->dev; + struct unicam_buffer *buf; + struct media_pipeline_pad_iter iter; + struct media_pad *pad; + unsigned long flags; + int ret; + + dev_dbg(unicam->dev, "Starting stream on %s device\n", + is_metadata_node(node) ? "metadata" : "image"); + + /* + * Start the pipeline. This validates all links, and populates the + * pipeline structure. + */ + ret = video_device_pipeline_start(&node->video_dev, &unicam->pipe.pipe); + if (ret < 0) { + dev_dbg(unicam->dev, "Failed to start media pipeline: %d\n", ret); + goto err_buffers; + } + + /* + * Determine which video nodes are included in the pipeline, and get the + * number of data lanes. + */ + if (unicam->pipe.pipe.start_count == 1) { + unicam->pipe.nodes = 0; + + media_pipeline_for_each_pad(&unicam->pipe.pipe, &iter, pad) { + if (pad->entity != &unicam->subdev.sd.entity) + continue; + + if (pad->index == UNICAM_SD_PAD_SOURCE_IMAGE) + unicam->pipe.nodes |= BIT(UNICAM_IMAGE_NODE); + else if (pad->index == UNICAM_SD_PAD_SOURCE_METADATA) + unicam->pipe.nodes |= BIT(UNICAM_METADATA_NODE); + } + + if (!(unicam->pipe.nodes & BIT(UNICAM_IMAGE_NODE))) { + dev_dbg(unicam->dev, + "Pipeline does not include image node\n"); + ret = -EPIPE; + goto err_pipeline; + } + + ret = unicam_num_data_lanes(unicam); + if (ret < 0) + goto err_pipeline; + + unicam->pipe.num_data_lanes = ret; + + dev_dbg(unicam->dev, "Running with %u data lanes, nodes %u\n", + unicam->pipe.num_data_lanes, unicam->pipe.nodes); + } + + /* Arm the node with the first buffer from the DMA queue. */ + spin_lock_irqsave(&node->dma_queue_lock, flags); + buf = list_first_entry(&node->dma_queue, struct unicam_buffer, list); + node->cur_frm = buf; + node->next_frm = buf; + list_del(&buf->list); + spin_unlock_irqrestore(&node->dma_queue_lock, flags); + + /* + * Wait for all the video devices in the pipeline to have been started + * before starting the hardware. In the general case, this would + * prevent capturing multiple streams independently. However, the + * Unicam DMA engines are not generic, they have been designed to + * capture image data and embedded data from the same camera sensor. + * Not only does the main use case not benefit from independent + * capture, it requires proper synchronization of the streams at start + * time. + */ + if (unicam->pipe.pipe.start_count < hweight32(unicam->pipe.nodes)) + return 0; + + ret = pm_runtime_resume_and_get(unicam->dev); + if (ret < 0) { + dev_err(unicam->dev, "PM runtime resume failed: %d\n", ret); + goto err_pipeline; + } + + /* Enable the streams on the source. */ + ret = v4l2_subdev_enable_streams(&unicam->subdev.sd, + UNICAM_SD_PAD_SOURCE_IMAGE, + BIT(0)); + if (ret < 0) { + dev_err(unicam->dev, "stream on failed in subdev\n"); + goto err_pm_put; + } + + if (unicam->pipe.nodes & BIT(UNICAM_METADATA_NODE)) { + ret = v4l2_subdev_enable_streams(&unicam->subdev.sd, + UNICAM_SD_PAD_SOURCE_METADATA, + BIT(0)); + if (ret < 0) { + dev_err(unicam->dev, "stream on failed in subdev\n"); + goto err_disable_streams; + } + } + + return 0; + +err_disable_streams: + v4l2_subdev_disable_streams(&unicam->subdev.sd, + UNICAM_SD_PAD_SOURCE_IMAGE, BIT(0)); +err_pm_put: + pm_runtime_put_sync(unicam->dev); +err_pipeline: + video_device_pipeline_stop(&node->video_dev); +err_buffers: + unicam_return_buffers(node, VB2_BUF_STATE_QUEUED); + return ret; +} + +static void unicam_stop_streaming(struct vb2_queue *vq) +{ + struct unicam_node *node = vb2_get_drv_priv(vq); + struct unicam_device *unicam = node->dev; + + /* Stop the hardware when the first video device gets stopped. */ + if (unicam->pipe.pipe.start_count == hweight32(unicam->pipe.nodes)) { + if (unicam->pipe.nodes & BIT(UNICAM_METADATA_NODE)) + v4l2_subdev_disable_streams(&unicam->subdev.sd, + UNICAM_SD_PAD_SOURCE_METADATA, + BIT(0)); + + v4l2_subdev_disable_streams(&unicam->subdev.sd, + UNICAM_SD_PAD_SOURCE_IMAGE, + BIT(0)); + + pm_runtime_put(unicam->dev); + } + + video_device_pipeline_stop(&node->video_dev); + + /* Clear all queued buffers for the node */ + unicam_return_buffers(node, VB2_BUF_STATE_ERROR); +} + +static void unicam_buffer_queue(struct vb2_buffer *vb) +{ + struct unicam_node *node = vb2_get_drv_priv(vb->vb2_queue); + struct unicam_buffer *buf = to_unicam_buffer(vb); + + spin_lock_irq(&node->dma_queue_lock); + list_add_tail(&buf->list, &node->dma_queue); + spin_unlock_irq(&node->dma_queue_lock); +} + +static const struct vb2_ops unicam_video_qops = { + .queue_setup = unicam_queue_setup, + .wait_prepare = vb2_ops_wait_prepare, + .wait_finish = vb2_ops_wait_finish, + .buf_prepare = unicam_buffer_prepare, + .start_streaming = unicam_start_streaming, + .stop_streaming = unicam_stop_streaming, + .buf_queue = unicam_buffer_queue, +}; + +/* ----------------------------------------------------------------------------- + * V4L2 video device operations + */ + +static int unicam_querycap(struct file *file, void *priv, + struct v4l2_capability *cap) +{ + strscpy(cap->driver, UNICAM_MODULE_NAME, sizeof(cap->driver)); + strscpy(cap->card, UNICAM_MODULE_NAME, sizeof(cap->card)); + + cap->capabilities |= V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_META_CAPTURE; + + return 0; +} + +static int unicam_enum_fmt_vid(struct file *file, void *priv, + struct v4l2_fmtdesc *f) +{ + unsigned int index; + unsigned int i; + + for (i = 0, index = 0; i < ARRAY_SIZE(unicam_image_formats); i++) { + if (f->mbus_code && unicam_image_formats[i].code != f->mbus_code) + continue; + + if (index == f->index) { + f->pixelformat = unicam_image_formats[i].fourcc; + return 0; + } + + index++; + + if (!unicam_image_formats[i].unpacked_fourcc) + continue; + + if (index == f->index) { + f->pixelformat = unicam_image_formats[i].unpacked_fourcc; + return 0; + } + + index++; + } + + return -EINVAL; +} + +static int unicam_g_fmt_vid(struct file *file, void *priv, + struct v4l2_format *f) +{ + struct unicam_node *node = video_drvdata(file); + + *f = node->fmt; + + return 0; +} + +static void __unicam_try_fmt_vid(struct unicam_node *node, + struct v4l2_pix_format *pix) +{ + const struct unicam_format_info *fmtinfo; + + /* + * Default to the first format if the requested pixel format code isn't + * supported. + */ + fmtinfo = unicam_find_format_by_fourcc(pix->pixelformat, + UNICAM_SD_PAD_SOURCE_IMAGE); + if (!fmtinfo) { + fmtinfo = &unicam_image_formats[0]; + pix->pixelformat = fmtinfo->fourcc; + } + + unicam_calc_image_size_bpl(node->dev, fmtinfo, pix); + + if (pix->field == V4L2_FIELD_ANY) + pix->field = V4L2_FIELD_NONE; +} + +static int unicam_try_fmt_vid(struct file *file, void *priv, + struct v4l2_format *f) +{ + struct unicam_node *node = video_drvdata(file); + + __unicam_try_fmt_vid(node, &f->fmt.pix); + return 0; +} + +static int unicam_s_fmt_vid(struct file *file, void *priv, + struct v4l2_format *f) +{ + struct unicam_node *node = video_drvdata(file); + + if (vb2_is_busy(&node->buffer_queue)) + return -EBUSY; + + __unicam_try_fmt_vid(node, &f->fmt.pix); + node->fmt = *f; + + return 0; +} + +static int unicam_enum_fmt_meta(struct file *file, void *priv, + struct v4l2_fmtdesc *f) +{ + unsigned int i, index; + + for (i = 0, index = 0; i < ARRAY_SIZE(unicam_meta_formats); i++) { + if (f->mbus_code && unicam_meta_formats[i].code != f->mbus_code) + continue; + + if (index == f->index) { + f->pixelformat = unicam_meta_formats[i].fourcc; + f->type = V4L2_BUF_TYPE_META_CAPTURE; + f->flags = V4L2_FMT_FLAG_META_LINE_BASED; + return 0; + } + + index++; + } + + return -EINVAL; +} + +static int unicam_g_fmt_meta(struct file *file, void *priv, + struct v4l2_format *f) +{ + struct unicam_node *node = video_drvdata(file); + + f->fmt.meta = node->fmt.fmt.meta; + + return 0; +} + +static const struct unicam_format_info * +__unicam_try_fmt_meta(struct unicam_node *node, struct v4l2_meta_format *meta) +{ + const struct unicam_format_info *fmtinfo; + + /* + * Default to the first format if the requested pixel format code isn't + * supported. + */ + fmtinfo = unicam_find_format_by_fourcc(meta->dataformat, + UNICAM_SD_PAD_SOURCE_METADATA); + if (!fmtinfo) { + fmtinfo = &unicam_meta_formats[0]; + meta->dataformat = fmtinfo->fourcc; + } + + unicam_calc_meta_size_bpl(node->dev, fmtinfo, meta); + + return fmtinfo; +} + +static int unicam_try_fmt_meta(struct file *file, void *priv, + struct v4l2_format *f) +{ + struct unicam_node *node = video_drvdata(file); + + __unicam_try_fmt_meta(node, &f->fmt.meta); + return 0; +} + +static int unicam_s_fmt_meta(struct file *file, void *priv, + struct v4l2_format *f) +{ + struct unicam_node *node = video_drvdata(file); + + if (vb2_is_busy(&node->buffer_queue)) + return -EBUSY; + + __unicam_try_fmt_meta(node, &f->fmt.meta); + node->fmt = *f; + + return 0; +} + +static int unicam_enum_framesizes(struct file *file, void *fh, + struct v4l2_frmsizeenum *fsize) +{ + struct unicam_node *node = video_drvdata(file); + int ret = -EINVAL; + + if (fsize->index > 0) + return ret; + + if (is_image_node(node)) { + if (!unicam_find_format_by_fourcc(fsize->pixel_format, + UNICAM_SD_PAD_SOURCE_IMAGE)) + return ret; + + fsize->type = V4L2_FRMSIZE_TYPE_STEPWISE; + fsize->stepwise.min_width = UNICAM_IMAGE_MIN_WIDTH; + fsize->stepwise.max_width = UNICAM_IMAGE_MAX_WIDTH; + fsize->stepwise.step_width = 1; + fsize->stepwise.min_height = UNICAM_IMAGE_MIN_HEIGHT; + fsize->stepwise.max_height = UNICAM_IMAGE_MAX_HEIGHT; + fsize->stepwise.step_height = 1; + } else { + if (!unicam_find_format_by_fourcc(fsize->pixel_format, + UNICAM_SD_PAD_SOURCE_METADATA)) + return ret; + + fsize->type = V4L2_FRMSIZE_TYPE_STEPWISE; + fsize->stepwise.min_width = UNICAM_META_MIN_WIDTH; + fsize->stepwise.max_width = UNICAM_META_MAX_WIDTH; + fsize->stepwise.step_width = 1; + fsize->stepwise.min_height = UNICAM_META_MIN_HEIGHT; + fsize->stepwise.max_height = UNICAM_META_MAX_HEIGHT; + fsize->stepwise.step_height = 1; + } + + return 0; +} + +static int unicam_log_status(struct file *file, void *fh) +{ + struct unicam_node *node = video_drvdata(file); + struct unicam_device *unicam = node->dev; + u32 reg; + + /* status for sub devices */ + v4l2_device_call_all(&unicam->v4l2_dev, 0, core, log_status); + + dev_info(unicam->dev, "-----Receiver status-----\n"); + dev_info(unicam->dev, "V4L2 width/height: %ux%u\n", + node->fmt.fmt.pix.width, node->fmt.fmt.pix.height); + dev_info(unicam->dev, "V4L2 format: %08x\n", + node->fmt.fmt.pix.pixelformat); + reg = unicam_reg_read(unicam, UNICAM_IPIPE); + dev_info(unicam->dev, "Unpacking/packing: %u / %u\n", + unicam_get_field(reg, UNICAM_PUM_MASK), + unicam_get_field(reg, UNICAM_PPM_MASK)); + dev_info(unicam->dev, "----Live data----\n"); + dev_info(unicam->dev, "Programmed stride: %4u\n", + unicam_reg_read(unicam, UNICAM_IBLS)); + dev_info(unicam->dev, "Detected resolution: %ux%u\n", + unicam_reg_read(unicam, UNICAM_IHSTA), + unicam_reg_read(unicam, UNICAM_IVSTA)); + dev_info(unicam->dev, "Write pointer: %08x\n", + unicam_reg_read(unicam, UNICAM_IBWP)); + + return 0; +} + +static int unicam_subscribe_event(struct v4l2_fh *fh, + const struct v4l2_event_subscription *sub) +{ + switch (sub->type) { + case V4L2_EVENT_FRAME_SYNC: + return v4l2_event_subscribe(fh, sub, 2, NULL); + default: + return -EINVAL; + } +} + +static const struct v4l2_ioctl_ops unicam_ioctl_ops = { + .vidioc_querycap = unicam_querycap, + + .vidioc_enum_fmt_vid_cap = unicam_enum_fmt_vid, + .vidioc_g_fmt_vid_cap = unicam_g_fmt_vid, + .vidioc_try_fmt_vid_cap = unicam_try_fmt_vid, + .vidioc_s_fmt_vid_cap = unicam_s_fmt_vid, + + .vidioc_enum_fmt_meta_cap = unicam_enum_fmt_meta, + .vidioc_g_fmt_meta_cap = unicam_g_fmt_meta, + .vidioc_try_fmt_meta_cap = unicam_try_fmt_meta, + .vidioc_s_fmt_meta_cap = unicam_s_fmt_meta, + + .vidioc_enum_framesizes = unicam_enum_framesizes, + + .vidioc_reqbufs = vb2_ioctl_reqbufs, + .vidioc_create_bufs = vb2_ioctl_create_bufs, + .vidioc_prepare_buf = vb2_ioctl_prepare_buf, + .vidioc_querybuf = vb2_ioctl_querybuf, + .vidioc_qbuf = vb2_ioctl_qbuf, + .vidioc_dqbuf = vb2_ioctl_dqbuf, + .vidioc_expbuf = vb2_ioctl_expbuf, + .vidioc_streamon = vb2_ioctl_streamon, + .vidioc_streamoff = vb2_ioctl_streamoff, + + .vidioc_log_status = unicam_log_status, + .vidioc_subscribe_event = unicam_subscribe_event, + .vidioc_unsubscribe_event = v4l2_event_unsubscribe, +}; + +/* unicam capture driver file operations */ +static const struct v4l2_file_operations unicam_fops = { + .owner = THIS_MODULE, + .open = v4l2_fh_open, + .release = vb2_fop_release, + .poll = vb2_fop_poll, + .unlocked_ioctl = video_ioctl2, + .mmap = vb2_fop_mmap, +}; + +static int unicam_video_link_validate(struct media_link *link) +{ + struct video_device *vdev = + media_entity_to_video_device(link->sink->entity); + struct v4l2_subdev *sd = + media_entity_to_v4l2_subdev(link->source->entity); + struct unicam_node *node = video_get_drvdata(vdev); + const u32 pad = is_image_node(node) ? UNICAM_SD_PAD_SOURCE_IMAGE + : UNICAM_SD_PAD_SOURCE_METADATA; + const struct v4l2_mbus_framefmt *format; + struct v4l2_subdev_state *state; + int ret = 0; + + state = v4l2_subdev_lock_and_get_active_state(sd); + + format = v4l2_subdev_state_get_format(state, pad, 0); + if (!format) { + ret = -EINVAL; + goto out; + } + + if (is_image_node(node)) { + const struct v4l2_pix_format *fmt = &node->fmt.fmt.pix; + const struct unicam_format_info *fmtinfo; + + fmtinfo = unicam_find_format_by_fourcc(fmt->pixelformat, + UNICAM_SD_PAD_SOURCE_IMAGE); + if (WARN_ON(!fmtinfo)) { + ret = -EPIPE; + goto out; + } + + if (fmtinfo->code != format->code || + fmt->height != format->height || + fmt->width != format->width || + fmt->field != format->field) { + dev_dbg(node->dev->dev, + "image: (%u x %u) 0x%08x %s != (%u x %u) 0x%08x %s\n", + fmt->width, fmt->height, fmtinfo->code, + v4l2_field_names[fmt->field], + format->width, format->height, format->code, + v4l2_field_names[format->field]); + ret = -EPIPE; + } + } else { + const struct v4l2_meta_format *fmt = &node->fmt.fmt.meta; + + const struct unicam_format_info *fmtinfo; + + fmtinfo = unicam_find_format_by_fourcc(fmt->dataformat, + UNICAM_SD_PAD_SOURCE_METADATA); + if (WARN_ON(!fmtinfo)) { + ret = -EPIPE; + goto out; + } + + if (fmtinfo->code != format->code || + fmt->height != format->height || + fmt->width != format->width) { + dev_dbg(node->dev->dev, + "meta: (%u x %u) 0x%04x != (%u x %u) 0x%04x\n", + fmt->width, fmt->height, fmtinfo->code, + format->width, format->height, format->code); + ret = -EPIPE; + } + } + +out: + v4l2_subdev_unlock_state(state); + return ret; +} + +static const struct media_entity_operations unicam_video_media_ops = { + .link_validate = unicam_video_link_validate, +}; + +static void unicam_node_release(struct video_device *vdev) +{ + struct unicam_node *node = video_get_drvdata(vdev); + + unicam_put(node->dev); +} + +static void unicam_set_default_format(struct unicam_node *node) +{ + if (is_image_node(node)) { + struct v4l2_pix_format *fmt = &node->fmt.fmt.pix; + const struct unicam_format_info *fmtinfo = + &unicam_image_formats[0]; + + node->fmt.type = V4L2_BUF_TYPE_VIDEO_CAPTURE; + + v4l2_fill_pix_format(fmt, &unicam_default_image_format); + fmt->pixelformat = fmtinfo->fourcc; + unicam_calc_image_size_bpl(node->dev, fmtinfo, fmt); + } else { + struct v4l2_meta_format *fmt = &node->fmt.fmt.meta; + const struct unicam_format_info *fmtinfo = + &unicam_meta_formats[0]; + + node->fmt.type = V4L2_BUF_TYPE_META_CAPTURE; + + fmt->dataformat = fmtinfo->fourcc; + fmt->width = unicam_default_meta_format.width; + fmt->height = unicam_default_meta_format.height; + unicam_calc_meta_size_bpl(node->dev, fmtinfo, fmt); + } +} + +static int unicam_register_node(struct unicam_device *unicam, + enum unicam_node_type type) +{ + const u32 pad_index = type == UNICAM_IMAGE_NODE + ? UNICAM_SD_PAD_SOURCE_IMAGE + : UNICAM_SD_PAD_SOURCE_METADATA; + struct unicam_node *node = &unicam->node[type]; + struct video_device *vdev = &node->video_dev; + struct vb2_queue *q = &node->buffer_queue; + int ret; + + node->dev = unicam_get(unicam); + node->id = type; + + spin_lock_init(&node->dma_queue_lock); + + INIT_LIST_HEAD(&node->dma_queue); + + /* Initialize the videobuf2 queue. */ + q->type = type == UNICAM_IMAGE_NODE ? V4L2_BUF_TYPE_VIDEO_CAPTURE + : V4L2_BUF_TYPE_META_CAPTURE; + q->io_modes = VB2_MMAP | VB2_DMABUF; + q->drv_priv = node; + q->ops = &unicam_video_qops; + q->mem_ops = &vb2_dma_contig_memops; + q->buf_struct_size = sizeof(struct unicam_buffer); + q->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC; + q->lock = &unicam->lock; + q->min_queued_buffers = 1; + q->dev = unicam->dev; + + ret = vb2_queue_init(q); + if (ret) { + dev_err(unicam->dev, "vb2_queue_init() failed\n"); + goto err_unicam_put; + } + + /* Initialize the video device. */ + vdev->release = unicam_node_release; + vdev->fops = &unicam_fops; + vdev->ioctl_ops = &unicam_ioctl_ops; + vdev->v4l2_dev = &unicam->v4l2_dev; + vdev->vfl_dir = VFL_DIR_RX; + vdev->queue = q; + vdev->lock = &unicam->lock; + vdev->device_caps = type == UNICAM_IMAGE_NODE + ? V4L2_CAP_VIDEO_CAPTURE : V4L2_CAP_META_CAPTURE; + vdev->device_caps |= V4L2_CAP_STREAMING | V4L2_CAP_IO_MC; + vdev->entity.ops = &unicam_video_media_ops; + + snprintf(vdev->name, sizeof(vdev->name), "%s-%s", UNICAM_MODULE_NAME, + type == UNICAM_IMAGE_NODE ? "image" : "embedded"); + + video_set_drvdata(vdev, node); + + if (type == UNICAM_IMAGE_NODE) + vdev->entity.flags |= MEDIA_ENT_FL_DEFAULT; + + node->pad.flags = MEDIA_PAD_FL_SINK; + + ret = media_entity_pads_init(&vdev->entity, 1, &node->pad); + if (ret) + goto err_unicam_put; + + node->dummy_buf.size = UNICAM_DUMMY_BUF_SIZE; + node->dummy_buf_cpu_addr = dma_alloc_coherent(unicam->dev, + node->dummy_buf.size, + &node->dummy_buf.dma_addr, + GFP_KERNEL); + if (!node->dummy_buf_cpu_addr) { + dev_err(unicam->dev, "Unable to allocate dummy buffer.\n"); + ret = -ENOMEM; + goto err_entity_cleanup; + } + + unicam_set_default_format(node); + + ret = video_register_device(vdev, VFL_TYPE_VIDEO, -1); + if (ret) { + dev_err(unicam->dev, "Unable to register video device %s\n", + vdev->name); + goto err_dma_free; + } + + node->registered = true; + + ret = media_create_pad_link(&unicam->subdev.sd.entity, + pad_index, + &node->video_dev.entity, + 0, + MEDIA_LNK_FL_ENABLED | + MEDIA_LNK_FL_IMMUTABLE); + if (ret) { + /* + * No need for cleanup, the caller will unregister the + * video device, which will drop the reference on the + * device and trigger the cleanup. + */ + dev_err(unicam->dev, "Unable to create pad link for %s\n", + unicam->sensor.subdev->name); + return ret; + } + + return 0; + +err_dma_free: + dma_free_coherent(unicam->dev, node->dummy_buf.size, + node->dummy_buf_cpu_addr, + node->dummy_buf.dma_addr); +err_entity_cleanup: + media_entity_cleanup(&vdev->entity); +err_unicam_put: + unicam_put(unicam); + return ret; +} + +static void unicam_unregister_nodes(struct unicam_device *unicam) +{ + unsigned int i; + + for (i = 0; i < ARRAY_SIZE(unicam->node); i++) { + struct unicam_node *node = &unicam->node[i]; + + if (node->registered) { + vb2_video_unregister_device(&node->video_dev); + node->registered = false; + } + + if (node->dummy_buf_cpu_addr) + dma_free_coherent(unicam->dev, node->dummy_buf.size, + node->dummy_buf_cpu_addr, + node->dummy_buf.dma_addr); + } +} + +/* ----------------------------------------------------------------------------- + * Power management + */ + +static int unicam_runtime_resume(struct device *dev) +{ + struct unicam_device *unicam = dev_get_drvdata(dev); + int ret; + + ret = clk_set_min_rate(unicam->vpu_clock, UNICAM_MIN_VPU_CLOCK_RATE); + if (ret) { + dev_err(unicam->dev, "failed to set up VPU clock\n"); + return ret; + } + + ret = clk_prepare_enable(unicam->vpu_clock); + if (ret) { + dev_err(unicam->dev, "Failed to enable VPU clock: %d\n", ret); + goto err_vpu_clock; + } + + ret = clk_set_rate(unicam->clock, 100 * 1000 * 1000); + if (ret) { + dev_err(unicam->dev, "failed to set up CSI clock\n"); + goto err_vpu_prepare; + } + + ret = clk_prepare_enable(unicam->clock); + if (ret) { + dev_err(unicam->dev, "Failed to enable CSI clock: %d\n", ret); + goto err_vpu_prepare; + } + + return 0; + +err_vpu_prepare: + clk_disable_unprepare(unicam->vpu_clock); +err_vpu_clock: + if (clk_set_min_rate(unicam->vpu_clock, 0)) + dev_err(unicam->dev, "failed to reset the VPU clock\n"); + + return ret; +} + +static int unicam_runtime_suspend(struct device *dev) +{ + struct unicam_device *unicam = dev_get_drvdata(dev); + + clk_disable_unprepare(unicam->clock); + + if (clk_set_min_rate(unicam->vpu_clock, 0)) + dev_err(unicam->dev, "failed to reset the VPU clock\n"); + + clk_disable_unprepare(unicam->vpu_clock); + + return 0; +} + +static const struct dev_pm_ops unicam_pm_ops = { + RUNTIME_PM_OPS(unicam_runtime_suspend, unicam_runtime_resume, NULL) +}; + +/* ----------------------------------------------------------------------------- + * V4L2 async notifier + */ + +static int unicam_async_bound(struct v4l2_async_notifier *notifier, + struct v4l2_subdev *subdev, + struct v4l2_async_connection *asc) +{ + struct unicam_device *unicam = notifier_to_unicam_device(notifier); + struct media_pad *sink = &unicam->subdev.pads[UNICAM_SD_PAD_SINK]; + struct media_pad *source; + int ret; + + dev_dbg(unicam->dev, "Using sensor %s for capture\n", + subdev->name); + + ret = v4l2_create_fwnode_links_to_pad(subdev, sink, MEDIA_LNK_FL_ENABLED | + MEDIA_LNK_FL_IMMUTABLE); + if (ret) + return ret; + + source = media_pad_remote_pad_unique(sink); + if (!source) { + dev_err(unicam->dev, "No connected sensor pad\n"); + return -ENOTCONN; + } + + unicam->sensor.subdev = subdev; + unicam->sensor.pad = source; + + return 0; +} + +static int unicam_async_complete(struct v4l2_async_notifier *notifier) +{ + struct unicam_device *unicam = notifier_to_unicam_device(notifier); + int ret; + + ret = unicam_register_node(unicam, UNICAM_IMAGE_NODE); + if (ret) { + dev_err(unicam->dev, "Unable to register image video device.\n"); + goto unregister; + } + + ret = unicam_register_node(unicam, UNICAM_METADATA_NODE); + if (ret) { + dev_err(unicam->dev, "Unable to register metadata video device.\n"); + goto unregister; + } + + ret = v4l2_device_register_subdev_nodes(&unicam->v4l2_dev); + if (ret) { + dev_err(unicam->dev, "Unable to register subdev nodes.\n"); + goto unregister; + } + + return 0; + +unregister: + unicam_unregister_nodes(unicam); + unicam_put(unicam); + + return ret; +} + +static const struct v4l2_async_notifier_operations unicam_async_ops = { + .bound = unicam_async_bound, + .complete = unicam_async_complete, +}; + +static int unicam_async_nf_init(struct unicam_device *unicam) +{ + struct v4l2_fwnode_endpoint ep = { }; + struct fwnode_handle *ep_handle; + struct v4l2_async_connection *asc; + int ret; + + ret = of_property_read_u32(unicam->dev->of_node, "brcm,num-data-lanes", + &unicam->max_data_lanes); + if (ret < 0) { + dev_err(unicam->dev, "Missing %s DT property\n", + "brcm,num-data-lanes"); + return -EINVAL; + } + + /* Get and parse the local endpoint. */ + ep_handle = fwnode_graph_get_endpoint_by_id(dev_fwnode(unicam->dev), 0, 0, + FWNODE_GRAPH_ENDPOINT_NEXT); + if (!ep_handle) { + dev_err(unicam->dev, "No endpoint found\n"); + return -ENODEV; + } + + ret = v4l2_fwnode_endpoint_parse(ep_handle, &ep); + if (ret) { + dev_err(unicam->dev, "Failed to parse endpoint: %d\n", ret); + goto error; + } + + unicam->bus_type = ep.bus_type; + + switch (ep.bus_type) { + case V4L2_MBUS_CSI2_DPHY: { + unsigned int num_data_lanes = ep.bus.mipi_csi2.num_data_lanes; + + if (num_data_lanes != 1 && num_data_lanes != 2 && + num_data_lanes != 4) { + dev_err(unicam->dev, "%u data lanes not supported\n", + num_data_lanes); + goto error; + } + + if (num_data_lanes > unicam->max_data_lanes) { + dev_err(unicam->dev, + "Endpoint uses %u data lanes when %u are supported\n", + num_data_lanes, unicam->max_data_lanes); + goto error; + } + + unicam->max_data_lanes = num_data_lanes; + unicam->bus_flags = ep.bus.mipi_csi2.flags; + break; + } + + case V4L2_MBUS_CCP2: + unicam->max_data_lanes = 1; + unicam->bus_flags = ep.bus.mipi_csi1.strobe; + break; + + default: + /* Unsupported bus type */ + dev_err(unicam->dev, "Unsupported bus type %u\n", ep.bus_type); + goto error; + } + + /* Initialize and register the async notifier. */ + v4l2_async_nf_init(&unicam->notifier, &unicam->v4l2_dev); + + asc = v4l2_async_nf_add_fwnode_remote(&unicam->notifier, ep_handle, + struct v4l2_async_connection); + fwnode_handle_put(ep_handle); + ep_handle = NULL; + + if (IS_ERR(asc)) { + ret = PTR_ERR(asc); + dev_err(unicam->dev, "Failed to add entry to notifier: %d\n", + ret); + goto error; + } + + unicam->notifier.ops = &unicam_async_ops; + + ret = v4l2_async_nf_register(&unicam->notifier); + if (ret) { + dev_err(unicam->dev, "Error registering device notifier: %d\n", + ret); + goto error; + } + + return 0; + +error: + fwnode_handle_put(ep_handle); + return ret; +} + +/* ----------------------------------------------------------------------------- + * Probe & remove + */ + +static int unicam_media_init(struct unicam_device *unicam) +{ + int ret; + + unicam->mdev.dev = unicam->dev; + strscpy(unicam->mdev.model, UNICAM_MODULE_NAME, + sizeof(unicam->mdev.model)); + unicam->mdev.hw_revision = 0; + + media_device_init(&unicam->mdev); + + unicam->v4l2_dev.mdev = &unicam->mdev; + + ret = v4l2_device_register(unicam->dev, &unicam->v4l2_dev); + if (ret < 0) { + dev_err(unicam->dev, "Unable to register v4l2 device\n"); + goto err_media_cleanup; + } + + ret = media_device_register(&unicam->mdev); + if (ret < 0) { + dev_err(unicam->dev, + "Unable to register media-controller device\n"); + goto err_v4l2_unregister; + } + + return 0; + +err_v4l2_unregister: + v4l2_device_unregister(&unicam->v4l2_dev); +err_media_cleanup: + media_device_cleanup(&unicam->mdev); + return ret; +} + +static int unicam_probe(struct platform_device *pdev) +{ + struct unicam_device *unicam; + int ret; + + unicam = kzalloc(sizeof(*unicam), GFP_KERNEL); + if (!unicam) + return -ENOMEM; + + kref_init(&unicam->kref); + mutex_init(&unicam->lock); + + unicam->dev = &pdev->dev; + platform_set_drvdata(pdev, unicam); + + unicam->base = devm_platform_ioremap_resource_byname(pdev, "unicam"); + if (IS_ERR(unicam->base)) { + ret = PTR_ERR(unicam->base); + goto err_unicam_put; + } + + unicam->clk_gate_base = devm_platform_ioremap_resource_byname(pdev, "cmi"); + if (IS_ERR(unicam->clk_gate_base)) { + ret = PTR_ERR(unicam->clk_gate_base); + goto err_unicam_put; + } + + unicam->clock = devm_clk_get(&pdev->dev, "lp"); + if (IS_ERR(unicam->clock)) { + dev_err(unicam->dev, "Failed to get lp clock\n"); + ret = PTR_ERR(unicam->clock); + goto err_unicam_put; + } + + unicam->vpu_clock = devm_clk_get(&pdev->dev, "vpu"); + if (IS_ERR(unicam->vpu_clock)) { + dev_err(unicam->dev, "Failed to get vpu clock\n"); + ret = PTR_ERR(unicam->vpu_clock); + goto err_unicam_put; + } + + ret = platform_get_irq(pdev, 0); + if (ret <= 0) { + dev_err(&pdev->dev, "No IRQ resource\n"); + ret = -EINVAL; + goto err_unicam_put; + } + + ret = devm_request_irq(&pdev->dev, ret, unicam_isr, 0, + "unicam_capture0", unicam); + if (ret) { + dev_err(&pdev->dev, "Unable to request interrupt\n"); + ret = -EINVAL; + goto err_unicam_put; + } + + /* Enable the block power domain. */ + pm_runtime_enable(&pdev->dev); + + ret = unicam_media_init(unicam); + if (ret) + goto err_pm_runtime; + + ret = unicam_subdev_init(unicam); + if (ret) + goto err_media_unregister; + + ret = unicam_async_nf_init(unicam); + if (ret) + goto err_subdev_unregister; + + return 0; + +err_subdev_unregister: + unicam_subdev_cleanup(unicam); +err_media_unregister: + media_device_unregister(&unicam->mdev); +err_pm_runtime: + pm_runtime_disable(&pdev->dev); +err_unicam_put: + unicam_put(unicam); + + return ret; +} + +static int unicam_remove(struct platform_device *pdev) +{ + struct unicam_device *unicam = platform_get_drvdata(pdev); + + unicam_unregister_nodes(unicam); + v4l2_device_unregister(&unicam->v4l2_dev); + media_device_unregister(&unicam->mdev); + v4l2_async_nf_unregister(&unicam->notifier); + + unicam_subdev_cleanup(unicam); + + unicam_put(unicam); + + pm_runtime_disable(&pdev->dev); + + return 0; +} + +static const struct of_device_id unicam_of_match[] = { + { .compatible = "brcm,bcm2835-unicam", }, + { /* sentinel */ }, +}; +MODULE_DEVICE_TABLE(of, unicam_of_match); + +static struct platform_driver unicam_driver = { + .probe = unicam_probe, + .remove = unicam_remove, + .driver = { + .name = UNICAM_MODULE_NAME, + .pm = pm_ptr(&unicam_pm_ops), + .of_match_table = of_match_ptr(unicam_of_match), + }, +}; + +module_platform_driver(unicam_driver); + +MODULE_AUTHOR("Dave Stevenson "); +MODULE_DESCRIPTION("BCM2835 Unicam driver"); +MODULE_LICENSE("GPL"); From patchwork Wed Apr 24 15:35:41 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Laurent Pinchart X-Patchwork-Id: 791729 Received: from perceval.ideasonboard.com (perceval.ideasonboard.com [213.167.242.64]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 83C331635C0; Wed, 24 Apr 2024 15:35:58 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=213.167.242.64 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1713972959; cv=none; b=mkycMsVpJnm5r/XrhoHZB2/hfuBmqYLHF8dLOeK+7P6NhYcJBpLQwyhGjv860ako9/9/M3UqBt+0CApvKqxJcUNY0X5Gy0zANggd1kTljuYFAUj1dpcHFaFk1amPjUC364aT0gcAqcEpvrzrTA+nqmZIO/Jgr6Uq+9XO8j6SafU= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1713972959; c=relaxed/simple; bh=Xy6PMb0DzidrhaAriE7z1I98IIIOfbHE55qePyomcZg=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; 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a=rsa-sha256; c=relaxed/simple; d=ideasonboard.com; s=mail; t=1713972901; bh=Xy6PMb0DzidrhaAriE7z1I98IIIOfbHE55qePyomcZg=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=CAtg5duCGId3uVnkjibgs1npdxGSFhrMACoFLdG7uzjg7Zxc9MgXL71hVIwMQs01b rA1ucfuyCx2axD8VPT5yLRaV8C6RtyD+eoGZxaYyR+80Xhy+pcw0jRRJiGA8z4c8nk G2gM353Mlqhhn4k2T41ZyJEwr1zL6ntGQW36ut2s= From: Laurent Pinchart To: linux-media@vger.kernel.org Cc: Dave Stevenson , David Plowman , Jean-Michel Hautbois , Hans Verkuil , Naushir Patuck , Sakari Ailus , kernel-list@raspberrypi.com, linux-rpi-kernel@lists.infradead.org, Florian Fainelli , Ray Jui , Scott Branden , bcm-kernel-feedback-list@broadcom.com, Conor Dooley , Krzysztof Kozlowski , Rob Herring , devicetree@vger.kernel.org Subject: [PATCH v11 5/5] ARM: dts: bcm2835: Add Unicam CSI nodes Date: Wed, 24 Apr 2024 18:35:41 +0300 Message-ID: <20240424153542.32503-6-laurent.pinchart@ideasonboard.com> X-Mailer: git-send-email 2.43.2 In-Reply-To: <20240424153542.32503-1-laurent.pinchart@ideasonboard.com> References: <20240424153542.32503-1-laurent.pinchart@ideasonboard.com> Precedence: bulk X-Mailing-List: linux-media@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 From: Jean-Michel Hautbois Add both MIPI CSI-2 nodes in the bcm283x tree and take care of the Raspberry Pi / BCM2711 specific in the related files. Signed-off-by: Jean-Michel Hautbois Reviewed-by: Laurent Pinchart Signed-off-by: Stefan Wahren --- arch/arm/boot/dts/broadcom/bcm2711.dtsi | 8 +++++++ arch/arm/boot/dts/broadcom/bcm2835-rpi.dtsi | 14 ++++++++++++ arch/arm/boot/dts/broadcom/bcm283x.dtsi | 24 +++++++++++++++++++++ 3 files changed, 46 insertions(+) diff --git a/arch/arm/boot/dts/broadcom/bcm2711.dtsi b/arch/arm/boot/dts/broadcom/bcm2711.dtsi index 22c7f1561344..1d8f9f80f935 100644 --- a/arch/arm/boot/dts/broadcom/bcm2711.dtsi +++ b/arch/arm/boot/dts/broadcom/bcm2711.dtsi @@ -1114,6 +1114,14 @@ &rmem { #address-cells = <2>; }; +&csi0 { + interrupts = ; +}; + +&csi1 { + interrupts = ; +}; + &cma { /* * arm64 reserves the CMA by default somewhere in ZONE_DMA32, diff --git a/arch/arm/boot/dts/broadcom/bcm2835-rpi.dtsi b/arch/arm/boot/dts/broadcom/bcm2835-rpi.dtsi index f0acc9390f31..9972782429b1 100644 --- a/arch/arm/boot/dts/broadcom/bcm2835-rpi.dtsi +++ b/arch/arm/boot/dts/broadcom/bcm2835-rpi.dtsi @@ -25,6 +25,20 @@ vchiq: mailbox@7e00b840 { }; }; +&csi0 { + clocks = <&clocks BCM2835_CLOCK_CAM0>, + <&firmware_clocks 4>; + clock-names = "lp", "vpu"; + power-domains = <&power RPI_POWER_DOMAIN_UNICAM0>; +}; + +&csi1 { + clocks = <&clocks BCM2835_CLOCK_CAM1>, + <&firmware_clocks 4>; + clock-names = "lp", "vpu"; + power-domains = <&power RPI_POWER_DOMAIN_UNICAM1>; +}; + &gpio { gpioout: gpioout { brcm,pins = <6>; diff --git a/arch/arm/boot/dts/broadcom/bcm283x.dtsi b/arch/arm/boot/dts/broadcom/bcm283x.dtsi index 2ca8a2505a4d..69b0919f1324 100644 --- a/arch/arm/boot/dts/broadcom/bcm283x.dtsi +++ b/arch/arm/boot/dts/broadcom/bcm283x.dtsi @@ -454,6 +454,30 @@ dsi1: dsi@7e700000 { status = "disabled"; }; + csi0: csi@7e800000 { + compatible = "brcm,bcm2835-unicam"; + reg = <0x7e800000 0x800>, + <0x7e802000 0x4>; + reg-names = "unicam", "cmi"; + interrupts = <2 6>; + brcm,num-data-lanes = <2>; + status = "disabled"; + port { + }; + }; + + csi1: csi@7e801000 { + compatible = "brcm,bcm2835-unicam"; + reg = <0x7e801000 0x800>, + <0x7e802004 0x4>; + reg-names = "unicam", "cmi"; + interrupts = <2 7>; + brcm,num-data-lanes = <4>; + status = "disabled"; + port { + }; + }; + i2c1: i2c@7e804000 { compatible = "brcm,bcm2835-i2c"; reg = <0x7e804000 0x1000>; From patchwork Fri Apr 26 13:34:32 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Laurent Pinchart X-Patchwork-Id: 792500 Received: from perceval.ideasonboard.com (perceval.ideasonboard.com [213.167.242.64]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 9482B147C61; Fri, 26 Apr 2024 13:34:47 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=213.167.242.64 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1714138489; cv=none; b=fzu3Z/odg6hlKZvhkjuPbDLpEmrTK6XofgIEfX9DkORAjP9zVqlWFSse+cccwJs5gjQtg/KWAyNA8g+nxoeq5N1cmC1ZvGp/oBcgvt1jRH8c4Yl4q4ZxiwYnJYs8qZN4AsNnpW8fAMZhfo+erLym62C8+v1k6YFE94l59wtiq2I= ARC-Message-Signature: i=1; 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Fri, 26 Apr 2024 15:33:46 +0200 (CEST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=ideasonboard.com; s=mail; t=1714138426; bh=JzDiz1wz5pOiVASJ7ZgXZfkdAo2gKWQG4JoogGb+QgI=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=J8zugdgu622Co+nJAhrQQOA7WRmoxeHelyT+TRwoJ66igvRIyRdjHORQWWM35h6el tCRXe//8Ye2IzLTsXu06HUtKBl1V4O1MNjLHS4wVQ7W9AnuPChIUd+kD1GjHEG2fAx 07ex5ey4tM/6QGEuY3mPQOVIAj0BiEqEpPiGxzqM= From: Laurent Pinchart To: linux-media@vger.kernel.org Cc: Dave Stevenson , David Plowman , Jean-Michel Hautbois , Hans Verkuil , Naushir Patuck , Sakari Ailus , kernel-list@raspberrypi.com, linux-rpi-kernel@lists.infradead.org, Florian Fainelli , Ray Jui , Scott Branden , bcm-kernel-feedback-list@broadcom.com, Conor Dooley , Krzysztof Kozlowski , Rob Herring , devicetree@vger.kernel.org Subject: [PATCH v11 6/5] media: bcm2835-unicam: Return error code when DT parsing fails Date: Fri, 26 Apr 2024 16:34:32 +0300 Message-ID: <20240426133432.13266-1-laurent.pinchart@ideasonboard.com> X-Mailer: git-send-email 2.43.2 In-Reply-To: <20240424153542.32503-1-laurent.pinchart@ideasonboard.com> References: <20240424153542.32503-1-laurent.pinchart@ideasonboard.com> Precedence: bulk X-Mailing-List: linux-media@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Two of the error paths in unicam_async_nf_init() when DT parsing fails are not setting the ret variable, resulting in the function returning 0 on error. Fix it. Signed-off-by: Laurent Pinchart --- This patch should be squashed with "[PATCH v11 4/5] media: bcm2835-unicam: Add support for CCP2/CSI2 camera interface". --- drivers/media/platform/broadcom/bcm2835-unicam.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/media/platform/broadcom/bcm2835-unicam.c b/drivers/media/platform/broadcom/bcm2835-unicam.c index e91d02a64770..6ac4ea8efb1a 100644 --- a/drivers/media/platform/broadcom/bcm2835-unicam.c +++ b/drivers/media/platform/broadcom/bcm2835-unicam.c @@ -2519,6 +2519,7 @@ static int unicam_async_nf_init(struct unicam_device *unicam) num_data_lanes != 4) { dev_err(unicam->dev, "%u data lanes not supported\n", num_data_lanes); + ret = -EINVAL; goto error; } @@ -2526,6 +2527,7 @@ static int unicam_async_nf_init(struct unicam_device *unicam) dev_err(unicam->dev, "Endpoint uses %u data lanes when %u are supported\n", num_data_lanes, unicam->max_data_lanes); + ret = -EINVAL; goto error; }