From patchwork Wed Apr 29 22:00:03 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Sowjanya Komatineni X-Patchwork-Id: 11518787 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id A336881 for ; Wed, 29 Apr 2020 22:01:49 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 70EA021927 for ; Wed, 29 Apr 2020 22:01:49 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=nvidia.com header.i=@nvidia.com header.b="R7OyUwq3" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728077AbgD2WBk (ORCPT ); Wed, 29 Apr 2020 18:01:40 -0400 Received: from hqnvemgate24.nvidia.com ([216.228.121.143]:6506 "EHLO hqnvemgate24.nvidia.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727955AbgD2WBe (ORCPT ); Wed, 29 Apr 2020 18:01:34 -0400 Received: from hqpgpgate102.nvidia.com (Not Verified[216.228.121.13]) by hqnvemgate24.nvidia.com (using TLS: TLSv1.2, DES-CBC3-SHA) id ; Wed, 29 Apr 2020 14:59:28 -0700 Received: from hqmail.nvidia.com ([172.20.161.6]) by hqpgpgate102.nvidia.com (PGP Universal service); Wed, 29 Apr 2020 15:01:31 -0700 X-PGP-Universal: processed; by hqpgpgate102.nvidia.com on Wed, 29 Apr 2020 15:01:31 -0700 Received: from HQMAIL109.nvidia.com (172.20.187.15) by HQMAIL107.nvidia.com (172.20.187.13) with Microsoft SMTP Server (TLS) id 15.0.1473.3; Wed, 29 Apr 2020 22:01:30 +0000 Received: from rnnvemgw01.nvidia.com (10.128.109.123) by HQMAIL109.nvidia.com (172.20.187.15) with Microsoft SMTP Server (TLS) id 15.0.1473.3 via Frontend Transport; Wed, 29 Apr 2020 22:01:30 +0000 Received: from skomatineni-linux.nvidia.com (Not Verified[10.2.165.152]) by rnnvemgw01.nvidia.com with Trustwave SEG (v7,5,8,10121) id ; Wed, 29 Apr 2020 15:01:29 -0700 From: Sowjanya Komatineni To: , , , , , , CC: , , , , , , Subject: [RFC PATCH v11 6/9] media: tegra: Add Tegra210 Video input driver Date: Wed, 29 Apr 2020 15:00:03 -0700 Message-ID: <1588197606-32124-7-git-send-email-skomatineni@nvidia.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1588197606-32124-1-git-send-email-skomatineni@nvidia.com> References: <1588197606-32124-1-git-send-email-skomatineni@nvidia.com> X-NVConfidentiality: public MIME-Version: 1.0 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=nvidia.com; s=n1; t=1588197568; bh=Mksae8E9/xsRfvkKncyUJYEvYejB3iaw9BcrQPJ0LXs=; h=X-PGP-Universal:From:To:CC:Subject:Date:Message-ID:X-Mailer: In-Reply-To:References:X-NVConfidentiality:MIME-Version: Content-Type; b=R7OyUwq3Bcd5tAioft/uRtXsJz6jchs7WOAW/YBcrSXjHLRXb2jqhbr/FVPPCubC6 uGgnI4cU4c9Lu4QGUQMihfFeZi4XkEa6slLR5FuPX/2IOf86YVc7Y0y77dW6R3h0zC jeU6+y6wVHHgib432FYUUqEeCQnJGixskMMe713UM+yd/2JKf9hAq+UXz6IRWAyyID IILf4DVIswki59jB0FCQ6RQMTv7n2xOhaye7r4x46OvW43RFm1XsOFsHnsKa5LuHJB 9TGH568MfnkvLgNqKhht+6J1pR08aylufG2FtVFES8B15tDXJL/g30X8P0LyZwhzHu BsipV4puOcB2A== Sender: linux-clk-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-clk@vger.kernel.org Tegra210 contains a powerful Video Input (VI) hardware controller which can support up to 6 MIPI CSI camera sensors. Each Tegra CSI port can be one-to-one mapped to VI channel and can capture from an external camera sensor connected to CSI or from built-in test pattern generator. Tegra210 supports built-in test pattern generator from CSI to VI. This patch adds a v4l2 capture driver with media interface for Tegra210 built-in CSI to VI test pattern generator. This patch includes TPG support only and all the video pipeline configuration happens through the video device node. Acked-by: Thierry Reding Signed-off-by: Sowjanya Komatineni --- drivers/staging/media/Kconfig | 2 + drivers/staging/media/Makefile | 1 + drivers/staging/media/tegra-video/Kconfig | 12 + drivers/staging/media/tegra-video/Makefile | 8 + drivers/staging/media/tegra-video/TODO | 10 + drivers/staging/media/tegra-video/csi.c | 535 +++++++++++++ drivers/staging/media/tegra-video/csi.h | 144 ++++ drivers/staging/media/tegra-video/tegra210.c | 1007 ++++++++++++++++++++++++ drivers/staging/media/tegra-video/vi.c | 1078 ++++++++++++++++++++++++++ drivers/staging/media/tegra-video/vi.h | 256 ++++++ drivers/staging/media/tegra-video/video.c | 155 ++++ drivers/staging/media/tegra-video/video.h | 29 + 12 files changed, 3237 insertions(+) create mode 100644 drivers/staging/media/tegra-video/Kconfig create mode 100644 drivers/staging/media/tegra-video/Makefile create mode 100644 drivers/staging/media/tegra-video/TODO create mode 100644 drivers/staging/media/tegra-video/csi.c create mode 100644 drivers/staging/media/tegra-video/csi.h create mode 100644 drivers/staging/media/tegra-video/tegra210.c create mode 100644 drivers/staging/media/tegra-video/vi.c create mode 100644 drivers/staging/media/tegra-video/vi.h create mode 100644 drivers/staging/media/tegra-video/video.c create mode 100644 drivers/staging/media/tegra-video/video.h diff --git a/drivers/staging/media/Kconfig b/drivers/staging/media/Kconfig index c6b4fb5..6e54ba1 100644 --- a/drivers/staging/media/Kconfig +++ b/drivers/staging/media/Kconfig @@ -36,6 +36,8 @@ source "drivers/staging/media/sunxi/Kconfig" source "drivers/staging/media/tegra-vde/Kconfig" +source "drivers/staging/media/tegra-video/Kconfig" + source "drivers/staging/media/ipu3/Kconfig" source "drivers/staging/media/soc_camera/Kconfig" diff --git a/drivers/staging/media/Makefile b/drivers/staging/media/Makefile index 8b24be1..c38b83b 100644 --- a/drivers/staging/media/Makefile +++ b/drivers/staging/media/Makefile @@ -5,6 +5,7 @@ obj-$(CONFIG_VIDEO_MESON_VDEC) += meson/vdec/ obj-$(CONFIG_VIDEO_OMAP4) += omap4iss/ obj-$(CONFIG_VIDEO_ROCKCHIP_VDEC) += rkvdec/ obj-$(CONFIG_VIDEO_SUNXI) += sunxi/ +obj-$(CONFIG_VIDEO_TEGRA) += tegra-video/ obj-$(CONFIG_TEGRA_VDE) += tegra-vde/ obj-$(CONFIG_VIDEO_HANTRO) += hantro/ obj-$(CONFIG_VIDEO_IPU3_IMGU) += ipu3/ diff --git a/drivers/staging/media/tegra-video/Kconfig b/drivers/staging/media/tegra-video/Kconfig new file mode 100644 index 0000000..6cee329 --- /dev/null +++ b/drivers/staging/media/tegra-video/Kconfig @@ -0,0 +1,12 @@ +# SPDX-License-Identifier: GPL-2.0-only +config VIDEO_TEGRA + tristate "NVIDIA Tegra VI driver" + depends on TEGRA_HOST1X || COMPILE_TEST + select VIDEO_V4L2 + select MEDIA_CONTROLLER + select VIDEOBUF2_DMA_CONTIG + help + Choose this option if you have an NVIDIA Tegra SoC. + + To compile this driver as a module, choose M here: the module + will be called tegra-video. diff --git a/drivers/staging/media/tegra-video/Makefile b/drivers/staging/media/tegra-video/Makefile new file mode 100644 index 0000000..dfa2ef8 --- /dev/null +++ b/drivers/staging/media/tegra-video/Makefile @@ -0,0 +1,8 @@ +# SPDX-License-Identifier: GPL-2.0 +tegra-video-objs := \ + video.o \ + vi.o \ + csi.o + +tegra-video-$(CONFIG_ARCH_TEGRA_210_SOC) += tegra210.o +obj-$(CONFIG_VIDEO_TEGRA) += tegra-video.o diff --git a/drivers/staging/media/tegra-video/TODO b/drivers/staging/media/tegra-video/TODO new file mode 100644 index 0000000..5dcb7a8 --- /dev/null +++ b/drivers/staging/media/tegra-video/TODO @@ -0,0 +1,10 @@ +TODO list +* Currently driver supports Tegra build-in TPG only with direct media links + from CSI to VI. Update the driver to do TPG Vs Sensor media links based on + the kernel config CONFIG_VIDEO_TEGRA_TPG. +* Add real camera sensor capture support +* Add RAW10 packed video format support to Tegra210 video formats +* Add Tegra CSI MIPI pads calibration +* Add MIPI clock Settle time computation based on the data rate +* Add support for Ganged mode +* Make sure v4l2-compliance tests pass with all of the above implementations. diff --git a/drivers/staging/media/tegra-video/csi.c b/drivers/staging/media/tegra-video/csi.c new file mode 100644 index 0000000..729bfae --- /dev/null +++ b/drivers/staging/media/tegra-video/csi.c @@ -0,0 +1,535 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * Copyright (C) 2020 NVIDIA CORPORATION. All rights reserved. + */ + +#include +#include +#include +#include +#include +#include +#include +#include + +#include "csi.h" +#include "video.h" + +static inline struct tegra_csi * +host1x_client_to_csi(struct host1x_client *client) +{ + return container_of(client, struct tegra_csi, client); +} + +static inline struct tegra_csi_channel *to_csi_chan(struct v4l2_subdev *subdev) +{ + return container_of(subdev, struct tegra_csi_channel, subdev); +} + +/* + * CSI is a separate subdevice which has 6 source pads to generate + * test pattern. CSI subdevice pad ops are used only for TPG and + * allows below TPG formats. + */ +static const struct v4l2_mbus_framefmt tegra_csi_tpg_fmts[] = { + { + TEGRA_DEF_WIDTH, + TEGRA_DEF_HEIGHT, + MEDIA_BUS_FMT_SRGGB10_1X10, + V4L2_FIELD_NONE, + V4L2_COLORSPACE_SRGB + }, + { + TEGRA_DEF_WIDTH, + TEGRA_DEF_HEIGHT, + MEDIA_BUS_FMT_RGB888_1X32_PADHI, + V4L2_FIELD_NONE, + V4L2_COLORSPACE_SRGB + }, +}; + +static const struct v4l2_frmsize_discrete tegra_csi_tpg_sizes[] = { + { 1280, 720 }, + { 1920, 1080 }, + { 3840, 2160 }, +}; + +/* + * V4L2 Subdevice Pad Operations + */ + +static int csi_enum_bus_code(struct v4l2_subdev *subdev, + struct v4l2_subdev_pad_config *cfg, + struct v4l2_subdev_mbus_code_enum *code) +{ + if (code->index >= ARRAY_SIZE(tegra_csi_tpg_fmts)) + return -EINVAL; + + code->code = tegra_csi_tpg_fmts[code->index].code; + + return 0; +} + +static int csi_get_format(struct v4l2_subdev *subdev, + struct v4l2_subdev_pad_config *cfg, + struct v4l2_subdev_format *fmt) +{ + struct tegra_csi_channel *csi_chan = to_csi_chan(subdev); + + fmt->format = csi_chan->format; + + return 0; +} + +static int csi_get_frmrate_table_index(struct tegra_csi *csi, u32 code, + u32 width, u32 height) +{ + const struct tpg_framerate *frmrate; + unsigned int i; + + frmrate = csi->soc->tpg_frmrate_table; + for (i = 0; i < csi->soc->tpg_frmrate_table_size; i++) { + if (frmrate[i].code == code && + frmrate[i].frmsize.width == width && + frmrate[i].frmsize.height == height) { + return i; + } + } + + return -EINVAL; +} + +static void csi_chan_update_blank_intervals(struct tegra_csi_channel *csi_chan, + u32 code, u32 width, u32 height) +{ + struct tegra_csi *csi = csi_chan->csi; + const struct tpg_framerate *frmrate = csi->soc->tpg_frmrate_table; + int index; + + index = csi_get_frmrate_table_index(csi_chan->csi, code, + width, height); + if (index >= 0) { + csi_chan->h_blank = frmrate[index].h_blank; + csi_chan->v_blank = frmrate[index].v_blank; + csi_chan->framerate = frmrate[index].framerate; + } +} + +static int csi_enum_framesizes(struct v4l2_subdev *subdev, + struct v4l2_subdev_pad_config *cfg, + struct v4l2_subdev_frame_size_enum *fse) +{ + unsigned int i; + + if (fse->index >= ARRAY_SIZE(tegra_csi_tpg_sizes)) + return -EINVAL; + + for (i = 0; i < ARRAY_SIZE(tegra_csi_tpg_fmts); i++) + if (fse->code == tegra_csi_tpg_fmts[i].code) + break; + + if (i == ARRAY_SIZE(tegra_csi_tpg_fmts)) + return -EINVAL; + + fse->min_width = tegra_csi_tpg_sizes[fse->index].width; + fse->max_width = tegra_csi_tpg_sizes[fse->index].width; + fse->min_height = tegra_csi_tpg_sizes[fse->index].height; + fse->max_height = tegra_csi_tpg_sizes[fse->index].height; + + return 0; +} + +static int csi_enum_frameintervals(struct v4l2_subdev *subdev, + struct v4l2_subdev_pad_config *cfg, + struct v4l2_subdev_frame_interval_enum *fie) +{ + struct tegra_csi_channel *csi_chan = to_csi_chan(subdev); + struct tegra_csi *csi = csi_chan->csi; + const struct tpg_framerate *frmrate = csi->soc->tpg_frmrate_table; + int index; + + /* one framerate per format and resolution */ + if (fie->index > 0) + return -EINVAL; + + index = csi_get_frmrate_table_index(csi_chan->csi, fie->code, + fie->width, fie->height); + if (index < 0) + return -EINVAL; + + fie->interval.numerator = 1; + fie->interval.denominator = frmrate[index].framerate; + + return 0; +} + +static int csi_set_format(struct v4l2_subdev *subdev, + struct v4l2_subdev_pad_config *cfg, + struct v4l2_subdev_format *fmt) +{ + struct tegra_csi_channel *csi_chan = to_csi_chan(subdev); + struct v4l2_mbus_framefmt *format = &fmt->format; + const struct v4l2_frmsize_discrete *sizes; + unsigned int i; + + sizes = v4l2_find_nearest_size(tegra_csi_tpg_sizes, + ARRAY_SIZE(tegra_csi_tpg_sizes), + width, height, + format->width, format->width); + format->width = sizes->width; + format->height = sizes->height; + + for (i = 0; i < ARRAY_SIZE(tegra_csi_tpg_fmts); i++) + if (format->code == tegra_csi_tpg_fmts[i].code) + break; + + if (i == ARRAY_SIZE(tegra_csi_tpg_fmts)) + i = 0; + + format->code = tegra_csi_tpg_fmts[i].code; + format->field = V4L2_FIELD_NONE; + + if (fmt->which == V4L2_SUBDEV_FORMAT_TRY) + return 0; + + /* update blanking intervals from frame rate table and format */ + csi_chan_update_blank_intervals(csi_chan, format->code, + format->width, format->height); + csi_chan->format = *format; + + return 0; +} + +/* + * V4L2 Subdevice Video Operations + */ +static int tegra_csi_g_frame_interval(struct v4l2_subdev *subdev, + struct v4l2_subdev_frame_interval *vfi) +{ + struct tegra_csi_channel *csi_chan = to_csi_chan(subdev); + + vfi->interval.numerator = 1; + vfi->interval.denominator = csi_chan->framerate; + + return 0; +} + +static int tegra_csi_s_stream(struct v4l2_subdev *subdev, int enable) +{ + struct tegra_vi_channel *chan = v4l2_get_subdev_hostdata(subdev); + struct tegra_csi_channel *csi_chan = to_csi_chan(subdev); + struct tegra_csi *csi = csi_chan->csi; + int ret; + + if (enable) { + ret = pm_runtime_get_sync(csi->dev); + if (ret < 0) { + dev_err(csi->dev, + "failed to get runtime PM: %d\n", ret); + pm_runtime_put_noidle(csi->dev); + return ret; + } + } + + ret = csi->ops->csi_streaming(csi_chan, chan->pg_mode, enable); + + if (ret < 0 || !enable) + pm_runtime_put(csi->dev); + + return ret; +} + +/* + * V4L2 Subdevice Operations + */ +static const struct v4l2_subdev_video_ops tegra_csi_video_ops = { + .s_stream = tegra_csi_s_stream, + .g_frame_interval = tegra_csi_g_frame_interval, + .s_frame_interval = tegra_csi_g_frame_interval, +}; + +static const struct v4l2_subdev_pad_ops tegra_csi_pad_ops = { + .enum_mbus_code = csi_enum_bus_code, + .enum_frame_size = csi_enum_framesizes, + .enum_frame_interval = csi_enum_frameintervals, + .get_fmt = csi_get_format, + .set_fmt = csi_set_format, +}; + +static const struct v4l2_subdev_ops tegra_csi_ops = { + .video = &tegra_csi_video_ops, + .pad = &tegra_csi_pad_ops, +}; + +static int tegra_csi_tpg_channels_alloc(struct tegra_csi *csi) +{ + struct device_node *node = csi->dev->of_node; + unsigned int port_num; + struct tegra_csi_channel *chan; + unsigned int tpg_channels = csi->soc->csi_max_channels; + + /* allocate CSI channel for each CSI x2 ports */ + for (port_num = 0; port_num < tpg_channels; port_num++) { + chan = kzalloc(sizeof(*chan), GFP_KERNEL); + if (!chan) + return -ENOMEM; + + list_add_tail(&chan->list, &csi->csi_chans); + chan->csi = csi; + chan->csi_port_num = port_num; + chan->numlanes = 2; + chan->of_node = node; + chan->numpads = 1; + chan->pads[0].flags = MEDIA_PAD_FL_SOURCE; + } + + return 0; +} + +static int tegra_csi_channel_init(struct tegra_csi_channel *chan) +{ + struct tegra_csi *csi = chan->csi; + struct v4l2_subdev *subdev; + int ret; + + /* initialize the default format */ + chan->format.code = MEDIA_BUS_FMT_SRGGB10_1X10; + chan->format.field = V4L2_FIELD_NONE; + chan->format.colorspace = V4L2_COLORSPACE_SRGB; + chan->format.width = TEGRA_DEF_WIDTH; + chan->format.height = TEGRA_DEF_HEIGHT; + csi_chan_update_blank_intervals(chan, chan->format.code, + chan->format.width, + chan->format.height); + /* initialize V4L2 subdevice and media entity */ + subdev = &chan->subdev; + v4l2_subdev_init(subdev, &tegra_csi_ops); + subdev->dev = csi->dev; + snprintf(subdev->name, V4L2_SUBDEV_NAME_SIZE, "%s-%d", "tpg", + chan->csi_port_num); + + v4l2_set_subdevdata(subdev, chan); + subdev->fwnode = of_fwnode_handle(chan->of_node); + subdev->entity.function = MEDIA_ENT_F_VID_IF_BRIDGE; + + /* initialize media entity pads */ + ret = media_entity_pads_init(&subdev->entity, chan->numpads, + chan->pads); + if (ret < 0) { + dev_err(csi->dev, + "failed to initialize media entity: %d\n", ret); + subdev->dev = NULL; + return ret; + } + + return 0; +} + +void tegra_csi_error_recover(struct v4l2_subdev *sd) +{ + struct tegra_vi_channel *chan = v4l2_get_subdev_hostdata(sd); + struct tegra_csi_channel *csi_chan = to_csi_chan(sd); + struct tegra_csi *csi = csi_chan->csi; + + /* stop streaming during error recovery */ + csi->ops->csi_streaming(csi_chan, chan->pg_mode, false); + csi->ops->csi_err_recover(csi_chan); + csi->ops->csi_streaming(csi_chan, chan->pg_mode, true); +} + +static int tegra_csi_channels_init(struct tegra_csi *csi) +{ + struct tegra_csi_channel *chan; + int ret; + + list_for_each_entry(chan, &csi->csi_chans, list) { + ret = tegra_csi_channel_init(chan); + if (ret) { + dev_err(csi->dev, + "failed to initialize channel-%d: %d\n", + chan->csi_port_num, ret); + return ret; + } + } + + return 0; +} + +static void tegra_csi_channels_cleanup(struct tegra_csi *csi) +{ + struct v4l2_subdev *subdev; + struct tegra_csi_channel *chan, *tmp; + + list_for_each_entry_safe(chan, tmp, &csi->csi_chans, list) { + subdev = &chan->subdev; + if (subdev->dev) + media_entity_cleanup(&subdev->entity); + list_del(&chan->list); + kfree(chan); + } +} + +static int __maybe_unused csi_runtime_suspend(struct device *dev) +{ + struct tegra_csi *csi = dev_get_drvdata(dev); + + clk_bulk_disable_unprepare(csi->soc->num_clks, csi->clks); + + return 0; +} + +static int __maybe_unused csi_runtime_resume(struct device *dev) +{ + struct tegra_csi *csi = dev_get_drvdata(dev); + int ret; + + ret = clk_bulk_prepare_enable(csi->soc->num_clks, csi->clks); + if (ret < 0) { + dev_err(csi->dev, "failed to enable clocks: %d\n", ret); + return ret; + } + + return 0; +} + +static int tegra_csi_init(struct host1x_client *client) +{ + struct tegra_csi *csi = host1x_client_to_csi(client); + struct tegra_video_device *vid = dev_get_drvdata(client->host); + int ret; + + INIT_LIST_HEAD(&csi->csi_chans); + + ret = tegra_csi_tpg_channels_alloc(csi); + if (ret < 0) { + dev_err(csi->dev, + "failed to allocate tpg channels: %d\n", ret); + goto cleanup; + } + + ret = tegra_csi_channels_init(csi); + if (ret < 0) + goto cleanup; + + vid->csi = csi; + + return 0; + +cleanup: + tegra_csi_channels_cleanup(csi); + pm_runtime_put_sync(csi->dev); + return ret; +} + +static int tegra_csi_exit(struct host1x_client *client) +{ + struct tegra_csi *csi = host1x_client_to_csi(client); + + tegra_csi_channels_cleanup(csi); + + return 0; +} + +static const struct host1x_client_ops csi_client_ops = { + .init = tegra_csi_init, + .exit = tegra_csi_exit, +}; + +static int tegra_csi_probe(struct platform_device *pdev) +{ + struct tegra_csi *csi; + unsigned int i; + int ret; + + csi = devm_kzalloc(&pdev->dev, sizeof(*csi), GFP_KERNEL); + if (!csi) + return -ENOMEM; + + csi->iomem = devm_platform_ioremap_resource(pdev, 0); + if (IS_ERR(csi->iomem)) + return PTR_ERR(csi->iomem); + + csi->soc = of_device_get_match_data(&pdev->dev); + + csi->clks = devm_kcalloc(&pdev->dev, csi->soc->num_clks, + sizeof(*csi->clks), GFP_KERNEL); + if (!csi->clks) + return -ENOMEM; + + for (i = 0; i < csi->soc->num_clks; i++) + csi->clks[i].id = csi->soc->clk_names[i]; + + ret = devm_clk_bulk_get(&pdev->dev, csi->soc->num_clks, csi->clks); + if (ret) { + dev_err(&pdev->dev, "failed to get the clocks: %d\n", ret); + return ret; + } + + if (!pdev->dev.pm_domain) { + ret = -ENOENT; + dev_warn(&pdev->dev, "PM domain is not attached: %d\n", ret); + return ret; + } + + csi->dev = &pdev->dev; + csi->ops = csi->soc->ops; + platform_set_drvdata(pdev, csi); + pm_runtime_enable(&pdev->dev); + + /* initialize host1x interface */ + INIT_LIST_HEAD(&csi->client.list); + csi->client.ops = &csi_client_ops; + csi->client.dev = &pdev->dev; + + ret = host1x_client_register(&csi->client); + if (ret < 0) { + dev_err(&pdev->dev, + "failed to register host1x client: %d\n", ret); + goto rpm_disable; + } + + return 0; + +rpm_disable: + pm_runtime_disable(&pdev->dev); + return ret; +} + +static int tegra_csi_remove(struct platform_device *pdev) +{ + struct tegra_csi *csi = platform_get_drvdata(pdev); + int err; + + err = host1x_client_unregister(&csi->client); + if (err < 0) { + dev_err(&pdev->dev, + "failed to unregister host1x client: %d\n", err); + return err; + } + + pm_runtime_disable(&pdev->dev); + + return 0; +} + +static const struct of_device_id tegra_csi_of_id_table[] = { +#if defined(CONFIG_ARCH_TEGRA_210_SOC) + { .compatible = "nvidia,tegra210-csi", .data = &tegra210_csi_soc }, +#endif + { } +}; +MODULE_DEVICE_TABLE(of, tegra_csi_of_id_table); + +static const struct dev_pm_ops tegra_csi_pm_ops = { + SET_RUNTIME_PM_OPS(csi_runtime_suspend, csi_runtime_resume, NULL) +}; + +struct platform_driver tegra_csi_driver = { + .driver = { + .name = "tegra-csi", + .of_match_table = tegra_csi_of_id_table, + .pm = &tegra_csi_pm_ops, + }, + .probe = tegra_csi_probe, + .remove = tegra_csi_remove, +}; diff --git a/drivers/staging/media/tegra-video/csi.h b/drivers/staging/media/tegra-video/csi.h new file mode 100644 index 0000000..fa71fec --- /dev/null +++ b/drivers/staging/media/tegra-video/csi.h @@ -0,0 +1,144 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ +/* + * Copyright (C) 2020 NVIDIA CORPORATION. All rights reserved. + */ + +#ifndef __TEGRA_CSI_H__ +#define __TEGRA_CSI_H__ + +#include +#include + +/* + * Each CSI brick supports max of 4 lanes that can be used as either + * one x4 port using both CILA and CILB partitions of a CSI brick or can + * be used as two x2 ports with one x2 from CILA and the other x2 from + * CILB. + */ +#define CSI_PORTS_PER_BRICK 2 + +/* each CSI channel can have one sink and one source pads */ +#define TEGRA_CSI_PADS_NUM 2 + +enum tegra_csi_cil_port { + PORT_A = 0, + PORT_B, +}; + +enum tegra_csi_block { + CSI_CIL_AB = 0, + CSI_CIL_CD, + CSI_CIL_EF, +}; + +struct tegra_csi; + +/** + * struct tegra_csi_channel - Tegra CSI channel + * + * @list: list head for this entry + * @subdev: V4L2 subdevice associated with this channel + * @pads: media pads for the subdevice entity + * @numpads: number of pads. + * @csi: Tegra CSI device structure + * @of_node: csi device tree node + * @numlanes: number of lanes used per port/channel + * @csi_port_num: CSI channel port number + * @format: active format of the channel + * @framerate: active framerate for TPG + * @h_blank: horizontal blanking for TPG active format + * @v_blank: vertical blanking for TPG active format + */ +struct tegra_csi_channel { + struct list_head list; + struct v4l2_subdev subdev; + struct media_pad pads[TEGRA_CSI_PADS_NUM]; + unsigned int numpads; + struct tegra_csi *csi; + struct device_node *of_node; + unsigned int numlanes; + u8 csi_port_num; + struct v4l2_mbus_framefmt format; + unsigned int framerate; + unsigned int h_blank; + unsigned int v_blank; +}; + +/** + * struct tpg_framerate - Tegra CSI TPG framerate configuration + * + * @frmsize: frame resolution + * @code: media bus format code + * @h_blank: horizontal blanking used for TPG + * @v_blank: vertical blanking interval used for TPG + * @framerate: framerate achieved with the corresponding blanking intervals, + * format and resolution. + */ +struct tpg_framerate { + struct v4l2_frmsize_discrete frmsize; + u32 code; + unsigned int h_blank; + unsigned int v_blank; + unsigned int framerate; +}; + +/** + * struct tegra_csi_ops - Tegra CSI operations + * + * @csi_streaming: programs csi hardware to enable or disable streaming. + * @csi_err_recover: csi hardware block recovery in case of any capture errors + * due to missing source stream or due to improper csi input from + * the external source. + */ +struct tegra_csi_ops { + int (*csi_streaming)(struct tegra_csi_channel *csi_chan, u8 pg_mode, + int enable); + void (*csi_err_recover)(struct tegra_csi_channel *csi_chan); +}; + +/** + * struct tegra_csi_soc - NVIDIA Tegra CSI SoC structure + * + * @ops: csi hardware operations + * @csi_max_channels: supported max streaming channels + * @clk_names: csi and cil clock names + * @num_clks: total clocks count + * @tpg_frmrate_table: csi tpg frame rate table with blanking intervals + * @tpg_frmrate_table_size: size of frame rate table + */ +struct tegra_csi_soc { + const struct tegra_csi_ops *ops; + unsigned int csi_max_channels; + const char * const *clk_names; + unsigned int num_clks; + const struct tpg_framerate *tpg_frmrate_table; + unsigned int tpg_frmrate_table_size; +}; + +/** + * struct tegra_csi - NVIDIA Tegra CSI device structure + * + * @dev: device struct + * @client: host1x_client struct + * @iomem: register base + * @clks: clock for CSI and CIL + * @soc: pointer to SoC data structure + * @ops: csi operations + * @channels: list head for CSI channels + */ +struct tegra_csi { + struct device *dev; + struct host1x_client client; + void __iomem *iomem; + struct clk_bulk_data *clks; + const struct tegra_csi_soc *soc; + const struct tegra_csi_ops *ops; + struct list_head csi_chans; +}; + +#if defined(CONFIG_ARCH_TEGRA_210_SOC) +extern const struct tegra_csi_soc tegra210_csi_soc; +#endif + +void tegra_csi_error_recover(struct v4l2_subdev *subdev); +#endif diff --git a/drivers/staging/media/tegra-video/tegra210.c b/drivers/staging/media/tegra-video/tegra210.c new file mode 100644 index 0000000..42f85d9 --- /dev/null +++ b/drivers/staging/media/tegra-video/tegra210.c @@ -0,0 +1,1007 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * Copyright (C) 2020 NVIDIA CORPORATION. All rights reserved. + */ + +/* + * This source file contains Tegra210 supported video formats, + * VI and CSI SoC specific data, operations and registers accessors. + */ +#include +#include +#include +#include +#include +#include + +#include "csi.h" +#include "vi.h" + +#define TEGRA_VI_SYNCPT_WAIT_TIMEOUT msecs_to_jiffies(200) + +/* Tegra210 VI registers */ +#define TEGRA_VI_CFG_VI_INCR_SYNCPT 0x000 +#define VI_CFG_VI_INCR_SYNCPT_COND(x) (((x) & 0xff) << 8) +#define VI_CSI_PP_FRAME_START(port) (5 + (port) * 4) +#define VI_CSI_MW_ACK_DONE(port) (7 + (port) * 4) +#define TEGRA_VI_CFG_VI_INCR_SYNCPT_CNTRL 0x004 +#define VI_INCR_SYNCPT_NO_STALL BIT(8) +#define TEGRA_VI_CFG_VI_INCR_SYNCPT_ERROR 0x008 +#define TEGRA_VI_CFG_CG_CTRL 0x0b8 +#define VI_CG_2ND_LEVEL_EN 0x1 + +/* Tegra210 VI CSI registers */ +#define TEGRA_VI_CSI_SW_RESET 0x000 +#define TEGRA_VI_CSI_SINGLE_SHOT 0x004 +#define SINGLE_SHOT_CAPTURE 0x1 +#define TEGRA_VI_CSI_IMAGE_DEF 0x00c +#define BYPASS_PXL_TRANSFORM_OFFSET 24 +#define IMAGE_DEF_FORMAT_OFFSET 16 +#define IMAGE_DEF_DEST_MEM 0x1 +#define TEGRA_VI_CSI_IMAGE_SIZE 0x018 +#define IMAGE_SIZE_HEIGHT_OFFSET 16 +#define TEGRA_VI_CSI_IMAGE_SIZE_WC 0x01c +#define TEGRA_VI_CSI_IMAGE_DT 0x020 +#define TEGRA_VI_CSI_SURFACE0_OFFSET_MSB 0x024 +#define TEGRA_VI_CSI_SURFACE0_OFFSET_LSB 0x028 +#define TEGRA_VI_CSI_SURFACE1_OFFSET_MSB 0x02c +#define TEGRA_VI_CSI_SURFACE1_OFFSET_LSB 0x030 +#define TEGRA_VI_CSI_SURFACE2_OFFSET_MSB 0x034 +#define TEGRA_VI_CSI_SURFACE2_OFFSET_LSB 0x038 +#define TEGRA_VI_CSI_SURFACE0_STRIDE 0x054 +#define TEGRA_VI_CSI_SURFACE1_STRIDE 0x058 +#define TEGRA_VI_CSI_SURFACE2_STRIDE 0x05c +#define TEGRA_VI_CSI_SURFACE_HEIGHT0 0x060 +#define TEGRA_VI_CSI_ERROR_STATUS 0x084 + +/* Tegra210 CSI Pixel Parser registers: Starts from 0x838, offset 0x0 */ +#define TEGRA_CSI_INPUT_STREAM_CONTROL 0x000 +#define CSI_SKIP_PACKET_THRESHOLD_OFFSET 16 +#define TEGRA_CSI_PIXEL_STREAM_CONTROL0 0x004 +#define CSI_PP_PACKET_HEADER_SENT BIT(4) +#define CSI_PP_DATA_IDENTIFIER_ENABLE BIT(5) +#define CSI_PP_WORD_COUNT_SELECT_HEADER BIT(6) +#define CSI_PP_CRC_CHECK_ENABLE BIT(7) +#define CSI_PP_WC_CHECK BIT(8) +#define CSI_PP_OUTPUT_FORMAT_STORE (0x3 << 16) +#define CSI_PPA_PAD_LINE_NOPAD (0x2 << 24) +#define CSI_PP_HEADER_EC_DISABLE (0x1 << 27) +#define CSI_PPA_PAD_FRAME_NOPAD (0x2 << 28) +#define TEGRA_CSI_PIXEL_STREAM_CONTROL1 0x008 +#define CSI_PP_TOP_FIELD_FRAME_OFFSET 0 +#define CSI_PP_TOP_FIELD_FRAME_MASK_OFFSET 4 +#define TEGRA_CSI_PIXEL_STREAM_GAP 0x00c +#define PP_FRAME_MIN_GAP_OFFSET 16 +#define TEGRA_CSI_PIXEL_STREAM_PP_COMMAND 0x010 +#define CSI_PP_ENABLE 0x1 +#define CSI_PP_DISABLE 0x2 +#define CSI_PP_RST 0x3 +#define CSI_PP_SINGLE_SHOT_ENABLE (0x1 << 2) +#define CSI_PP_START_MARKER_FRAME_MAX_OFFSET 12 +#define TEGRA_CSI_PIXEL_STREAM_EXPECTED_FRAME 0x014 +#define TEGRA_CSI_PIXEL_PARSER_INTERRUPT_MASK 0x018 +#define TEGRA_CSI_PIXEL_PARSER_STATUS 0x01c + +/* Tegra210 CSI PHY registers */ +/* CSI_PHY_CIL_COMMAND_0 offset 0x0d0 from TEGRA_CSI_PIXEL_PARSER_0_BASE */ +#define TEGRA_CSI_PHY_CIL_COMMAND 0x0d0 +#define CSI_A_PHY_CIL_NOP 0x0 +#define CSI_A_PHY_CIL_ENABLE 0x1 +#define CSI_A_PHY_CIL_DISABLE 0x2 +#define CSI_A_PHY_CIL_ENABLE_MASK 0x3 +#define CSI_B_PHY_CIL_NOP (0x0 << 8) +#define CSI_B_PHY_CIL_ENABLE (0x1 << 8) +#define CSI_B_PHY_CIL_DISABLE (0x2 << 8) +#define CSI_B_PHY_CIL_ENABLE_MASK (0x3 << 8) + +#define TEGRA_CSI_CIL_PAD_CONFIG0 0x000 +#define BRICK_CLOCK_A_4X (0x1 << 16) +#define BRICK_CLOCK_B_4X (0x2 << 16) +#define TEGRA_CSI_CIL_PAD_CONFIG1 0x004 +#define TEGRA_CSI_CIL_PHY_CONTROL 0x008 +#define TEGRA_CSI_CIL_INTERRUPT_MASK 0x00c +#define TEGRA_CSI_CIL_STATUS 0x010 +#define TEGRA_CSI_CILX_STATUS 0x014 +#define TEGRA_CSI_CIL_SW_SENSOR_RESET 0x020 + +#define TEGRA_CSI_PATTERN_GENERATOR_CTRL 0x000 +#define PG_MODE_OFFSET 2 +#define PG_ENABLE 0x1 +#define PG_DISABLE 0x0 +#define TEGRA_CSI_PG_BLANK 0x004 +#define PG_VBLANK_OFFSET 16 +#define TEGRA_CSI_PG_PHASE 0x008 +#define TEGRA_CSI_PG_RED_FREQ 0x00c +#define PG_RED_VERT_INIT_FREQ_OFFSET 16 +#define PG_RED_HOR_INIT_FREQ_OFFSET 0 +#define TEGRA_CSI_PG_RED_FREQ_RATE 0x010 +#define TEGRA_CSI_PG_GREEN_FREQ 0x014 +#define PG_GREEN_VERT_INIT_FREQ_OFFSET 16 +#define PG_GREEN_HOR_INIT_FREQ_OFFSET 0 +#define TEGRA_CSI_PG_GREEN_FREQ_RATE 0x018 +#define TEGRA_CSI_PG_BLUE_FREQ 0x01c +#define PG_BLUE_VERT_INIT_FREQ_OFFSET 16 +#define PG_BLUE_HOR_INIT_FREQ_OFFSET 0 +#define TEGRA_CSI_PG_BLUE_FREQ_RATE 0x020 +#define TEGRA_CSI_PG_AOHDR 0x024 +#define TEGRA_CSI_CSI_SW_STATUS_RESET 0x214 +#define TEGRA_CSI_CLKEN_OVERRIDE 0x218 + +#define TEGRA210_CSI_PORT_OFFSET 0x34 +#define TEGRA210_CSI_CIL_OFFSET 0x0f4 +#define TEGRA210_CSI_TPG_OFFSET 0x18c + +#define CSI_PP_OFFSET(block) ((block) * 0x800) +#define TEGRA210_VI_CSI_BASE(x) (0x100 + (x) * 0x100) + +/* -------------------------------------------------------------------- */ + +/* Tegra210 VI registers accessors */ +static void tegra_vi_write(struct tegra_vi_channel *chan, unsigned int addr, + u32 val) +{ + writel_relaxed(val, chan->vi->iomem + addr); +} + +static u32 tegra_vi_read(struct tegra_vi_channel *chan, unsigned int addr) +{ + return readl_relaxed(chan->vi->iomem + addr); +} + +/* Tegra210 VI_CSI registers accessors */ +static void vi_csi_write(struct tegra_vi_channel *chan, unsigned int addr, + u32 val) +{ + void __iomem *vi_csi_base; + + vi_csi_base = chan->vi->iomem + TEGRA210_VI_CSI_BASE(chan->portno); + + writel_relaxed(val, vi_csi_base + addr); +} + +static u32 vi_csi_read(struct tegra_vi_channel *chan, unsigned int addr) +{ + void __iomem *vi_csi_base; + + vi_csi_base = chan->vi->iomem + TEGRA210_VI_CSI_BASE(chan->portno); + + return readl_relaxed(vi_csi_base + addr); +} + +/* + * Tegra210 VI channel capture operations + */ +static int tegra_channel_capture_setup(struct tegra_vi_channel *chan) +{ + u32 height = chan->format.height; + u32 width = chan->format.width; + u32 format = chan->fmtinfo->img_fmt; + u32 data_type = chan->fmtinfo->img_dt; + u32 word_count = (width * chan->fmtinfo->bit_width) / 8; + + vi_csi_write(chan, TEGRA_VI_CSI_ERROR_STATUS, 0xffffffff); + vi_csi_write(chan, TEGRA_VI_CSI_IMAGE_DEF, + ((chan->pg_mode ? 0 : 1) << BYPASS_PXL_TRANSFORM_OFFSET) | + (format << IMAGE_DEF_FORMAT_OFFSET) | + IMAGE_DEF_DEST_MEM); + vi_csi_write(chan, TEGRA_VI_CSI_IMAGE_DT, data_type); + vi_csi_write(chan, TEGRA_VI_CSI_IMAGE_SIZE_WC, word_count); + vi_csi_write(chan, TEGRA_VI_CSI_IMAGE_SIZE, + (height << IMAGE_SIZE_HEIGHT_OFFSET) | width); + return 0; +} + +static void tegra_channel_vi_soft_reset(struct tegra_vi_channel *chan) +{ + /* disable clock gating to enable continuous clock */ + tegra_vi_write(chan, TEGRA_VI_CFG_CG_CTRL, 0); + /* + * Soft reset memory client interface, pixel format logic, sensor + * control logic, and a shadow copy logic to bring VI to clean state. + */ + vi_csi_write(chan, TEGRA_VI_CSI_SW_RESET, 0xf); + usleep_range(100, 200); + vi_csi_write(chan, TEGRA_VI_CSI_SW_RESET, 0x0); + + /* enable back VI clock gating */ + tegra_vi_write(chan, TEGRA_VI_CFG_CG_CTRL, VI_CG_2ND_LEVEL_EN); +} + +static void tegra_channel_capture_error_recover(struct tegra_vi_channel *chan) +{ + struct v4l2_subdev *subdev; + u32 val; + + /* + * Recover VI and CSI hardware blocks in case of missing frame start + * events due to source not streaming or noisy csi inputs from the + * external source or many outstanding frame start or MW_ACK_DONE + * events which can cause CSI and VI hardware hang. + * This helps to have a clean capture for next frame. + */ + val = vi_csi_read(chan, TEGRA_VI_CSI_ERROR_STATUS); + dev_dbg(&chan->video.dev, "TEGRA_VI_CSI_ERROR_STATUS 0x%08x\n", val); + vi_csi_write(chan, TEGRA_VI_CSI_ERROR_STATUS, val); + + val = tegra_vi_read(chan, TEGRA_VI_CFG_VI_INCR_SYNCPT_ERROR); + dev_dbg(&chan->video.dev, + "TEGRA_VI_CFG_VI_INCR_SYNCPT_ERROR 0x%08x\n", val); + tegra_vi_write(chan, TEGRA_VI_CFG_VI_INCR_SYNCPT_ERROR, val); + + /* recover VI by issuing software reset and re-setup for capture */ + tegra_channel_vi_soft_reset(chan); + tegra_channel_capture_setup(chan); + + /* recover CSI block */ + subdev = tegra_channel_get_remote_subdev(chan); + tegra_csi_error_recover(subdev); +} + +static struct tegra_channel_buffer * +dequeue_buf_done(struct tegra_vi_channel *chan) +{ + struct tegra_channel_buffer *buf = NULL; + + spin_lock(&chan->done_lock); + if (list_empty(&chan->done)) { + spin_unlock(&chan->done_lock); + return NULL; + } + + buf = list_first_entry(&chan->done, + struct tegra_channel_buffer, queue); + if (buf) + list_del_init(&buf->queue); + + spin_unlock(&chan->done_lock); + + return buf; +} + +static void release_buffer(struct tegra_vi_channel *chan, + struct tegra_channel_buffer *buf, + enum vb2_buffer_state state) +{ + struct vb2_v4l2_buffer *vb = &buf->buf; + + vb->sequence = chan->sequence++; + vb->field = V4L2_FIELD_NONE; + vb->vb2_buf.timestamp = ktime_get_ns(); + vb2_buffer_done(&vb->vb2_buf, state); +} + +static int tegra_channel_capture_frame(struct tegra_vi_channel *chan, + struct tegra_channel_buffer *buf) +{ + int err = 0; + u32 thresh, value, frame_start, mw_ack_done; + int bytes_per_line = chan->format.bytesperline; + + /* program buffer address by using surface 0 */ + vi_csi_write(chan, TEGRA_VI_CSI_SURFACE0_OFFSET_MSB, + (u64)buf->addr >> 32); + vi_csi_write(chan, TEGRA_VI_CSI_SURFACE0_OFFSET_LSB, buf->addr); + vi_csi_write(chan, TEGRA_VI_CSI_SURFACE0_STRIDE, bytes_per_line); + + /* + * Tegra VI block interacts with host1x syncpt for synchronizing + * programmed condition of capture state and hardware operation. + * Frame start and Memory write acknowledge syncpts has their own + * FIFO of depth 2. + * + * Syncpoint trigger conditions set through VI_INCR_SYNCPT register + * are added to HW syncpt FIFO and when the HW triggers, syncpt + * condition is removed from the FIFO and counter at syncpoint index + * will be incremented by the hardware and software can wait for + * counter to reach threshold to synchronize capturing frame with the + * hardware capture events. + */ + + /* increase channel syncpoint threshold for FRAME_START */ + thresh = host1x_syncpt_incr_max(chan->frame_start_sp, 1); + + /* Program FRAME_START trigger condition syncpt request */ + frame_start = VI_CSI_PP_FRAME_START(chan->portno); + value = VI_CFG_VI_INCR_SYNCPT_COND(frame_start) | + host1x_syncpt_id(chan->frame_start_sp); + tegra_vi_write(chan, TEGRA_VI_CFG_VI_INCR_SYNCPT, value); + + /* increase channel syncpoint threshold for MW_ACK_DONE */ + buf->mw_ack_sp_thresh = host1x_syncpt_incr_max(chan->mw_ack_sp, 1); + + /* Program MW_ACK_DONE trigger condition syncpt request */ + mw_ack_done = VI_CSI_MW_ACK_DONE(chan->portno); + value = VI_CFG_VI_INCR_SYNCPT_COND(mw_ack_done) | + host1x_syncpt_id(chan->mw_ack_sp); + tegra_vi_write(chan, TEGRA_VI_CFG_VI_INCR_SYNCPT, value); + + /* enable single shot capture */ + vi_csi_write(chan, TEGRA_VI_CSI_SINGLE_SHOT, SINGLE_SHOT_CAPTURE); + + /* wait for syncpt counter to reach frame start event threshold */ + err = host1x_syncpt_wait(chan->frame_start_sp, thresh, + TEGRA_VI_SYNCPT_WAIT_TIMEOUT, &value); + if (err) { + dev_err_ratelimited(&chan->video.dev, + "frame start syncpt timeout: %d\n", err); + /* increment syncpoint counter for timedout events */ + host1x_syncpt_incr(chan->frame_start_sp); + spin_lock(&chan->sp_incr_lock); + host1x_syncpt_incr(chan->mw_ack_sp); + spin_unlock(&chan->sp_incr_lock); + /* clear errors and recover */ + tegra_channel_capture_error_recover(chan); + release_buffer(chan, buf, VB2_BUF_STATE_ERROR); + return err; + } + + /* move buffer to capture done queue */ + spin_lock(&chan->done_lock); + list_add_tail(&buf->queue, &chan->done); + spin_unlock(&chan->done_lock); + + /* wait up kthread for capture done */ + wake_up_interruptible(&chan->done_wait); + + return 0; +} + +static void tegra_channel_capture_done(struct tegra_vi_channel *chan, + struct tegra_channel_buffer *buf) +{ + enum vb2_buffer_state state = VB2_BUF_STATE_DONE; + u32 value; + int ret; + + /* wait for syncpt counter to reach MW_ACK_DONE event threshold */ + ret = host1x_syncpt_wait(chan->mw_ack_sp, buf->mw_ack_sp_thresh, + TEGRA_VI_SYNCPT_WAIT_TIMEOUT, &value); + if (ret) { + dev_err_ratelimited(&chan->video.dev, + "MW_ACK_DONE syncpt timeout: %d\n", ret); + state = VB2_BUF_STATE_ERROR; + /* increment syncpoint counter for timedout event */ + spin_lock(&chan->sp_incr_lock); + host1x_syncpt_incr(chan->mw_ack_sp); + spin_unlock(&chan->sp_incr_lock); + } + + release_buffer(chan, buf, state); +} + +static int chan_capture_kthread_start(void *data) +{ + struct tegra_vi_channel *chan = data; + struct tegra_channel_buffer *buf; + int err = 0; + + set_freezable(); + + while (1) { + try_to_freeze(); + + /* + * Source is not streaming if error is non-zero. + * So, do not dequeue buffers on error and let the thread sleep + * till kthread stop signal is received. + */ + wait_event_interruptible(chan->start_wait, + kthread_should_stop() || + (!list_empty(&chan->capture) && + !err)); + + if (kthread_should_stop()) + break; + + /* dequeue the buffer and start capture */ + spin_lock(&chan->start_lock); + if (list_empty(&chan->capture)) { + spin_unlock(&chan->start_lock); + continue; + } + + buf = list_first_entry(&chan->capture, + struct tegra_channel_buffer, queue); + list_del_init(&buf->queue); + spin_unlock(&chan->start_lock); + + err = tegra_channel_capture_frame(chan, buf); + if (err) + vb2_queue_error(&chan->queue); + } + + return 0; +} + +static int chan_capture_kthread_finish(void *data) +{ + struct tegra_vi_channel *chan = data; + struct tegra_channel_buffer *buf; + + set_freezable(); + + while (1) { + try_to_freeze(); + + wait_event_interruptible(chan->done_wait, + !list_empty(&chan->done) || + kthread_should_stop()); + + /* dequeue buffers and finish capture */ + buf = dequeue_buf_done(chan); + while (buf) { + tegra_channel_capture_done(chan, buf); + buf = dequeue_buf_done(chan); + } + + if (kthread_should_stop()) + break; + } + + return 0; +} + +static int tegra210_vi_start_streaming(struct vb2_queue *vq, u32 count) +{ + struct tegra_vi_channel *chan = vb2_get_drv_priv(vq); + struct media_pipeline *pipe = &chan->video.pipe; + u32 val; + int ret; + + tegra_vi_write(chan, TEGRA_VI_CFG_CG_CTRL, VI_CG_2ND_LEVEL_EN); + + /* clear errors */ + val = vi_csi_read(chan, TEGRA_VI_CSI_ERROR_STATUS); + vi_csi_write(chan, TEGRA_VI_CSI_ERROR_STATUS, val); + + val = tegra_vi_read(chan, TEGRA_VI_CFG_VI_INCR_SYNCPT_ERROR); + tegra_vi_write(chan, TEGRA_VI_CFG_VI_INCR_SYNCPT_ERROR, val); + + /* + * Sync point FIFO full stalls the host interface. + * Setting NO_STALL will drop INCR_SYNCPT methods when fifos are + * full and the corresponding condition bits in INCR_SYNCPT_ERROR + * register will be set. + * This allows SW to process error recovery. + */ + tegra_vi_write(chan, TEGRA_VI_CFG_VI_INCR_SYNCPT_CNTRL, + VI_INCR_SYNCPT_NO_STALL); + + /* start the pipeline */ + ret = media_pipeline_start(&chan->video.entity, pipe); + if (ret < 0) + goto error_pipeline_start; + + tegra_channel_capture_setup(chan); + ret = tegra_channel_set_stream(chan, true); + if (ret < 0) + goto error_set_stream; + + chan->sequence = 0; + + /* start kthreads to capture data to buffer and return them */ + chan->kthread_start_capture = kthread_run(chan_capture_kthread_start, + chan, "%s:0", + chan->video.name); + if (IS_ERR(chan->kthread_start_capture)) { + ret = PTR_ERR(chan->kthread_start_capture); + chan->kthread_start_capture = NULL; + dev_err(&chan->video.dev, + "failed to run capture start kthread: %d\n", ret); + goto error_kthread_start; + } + + chan->kthread_finish_capture = kthread_run(chan_capture_kthread_finish, + chan, "%s:1", + chan->video.name); + if (IS_ERR(chan->kthread_finish_capture)) { + ret = PTR_ERR(chan->kthread_finish_capture); + chan->kthread_finish_capture = NULL; + dev_err(&chan->video.dev, + "failed to run capture finish kthread: %d\n", ret); + goto error_kthread_done; + } + + return 0; + +error_kthread_done: + kthread_stop(chan->kthread_start_capture); +error_kthread_start: + tegra_channel_set_stream(chan, false); +error_set_stream: + media_pipeline_stop(&chan->video.entity); +error_pipeline_start: + tegra_channel_release_buffers(chan, VB2_BUF_STATE_QUEUED); + return ret; +} + +static void tegra210_vi_stop_streaming(struct vb2_queue *vq) +{ + struct tegra_vi_channel *chan = vb2_get_drv_priv(vq); + + if (chan->kthread_start_capture) { + kthread_stop(chan->kthread_start_capture); + chan->kthread_start_capture = NULL; + } + + if (chan->kthread_finish_capture) { + kthread_stop(chan->kthread_finish_capture); + chan->kthread_finish_capture = NULL; + } + + tegra_channel_release_buffers(chan, VB2_BUF_STATE_ERROR); + tegra_channel_set_stream(chan, false); + media_pipeline_stop(&chan->video.entity); +} + +/* + * Tegra210 VI Pixel memory format enum. + * These format enum value gets programmed into corresponding Tegra VI + * channel register bits. + */ +enum tegra210_image_format { + TEGRA210_IMAGE_FORMAT_T_L8 = 16, + + TEGRA210_IMAGE_FORMAT_T_R16_I = 32, + TEGRA210_IMAGE_FORMAT_T_B5G6R5, + TEGRA210_IMAGE_FORMAT_T_R5G6B5, + TEGRA210_IMAGE_FORMAT_T_A1B5G5R5, + TEGRA210_IMAGE_FORMAT_T_A1R5G5B5, + TEGRA210_IMAGE_FORMAT_T_B5G5R5A1, + TEGRA210_IMAGE_FORMAT_T_R5G5B5A1, + TEGRA210_IMAGE_FORMAT_T_A4B4G4R4, + TEGRA210_IMAGE_FORMAT_T_A4R4G4B4, + TEGRA210_IMAGE_FORMAT_T_B4G4R4A4, + TEGRA210_IMAGE_FORMAT_T_R4G4B4A4, + + TEGRA210_IMAGE_FORMAT_T_A8B8G8R8 = 64, + TEGRA210_IMAGE_FORMAT_T_A8R8G8B8, + TEGRA210_IMAGE_FORMAT_T_B8G8R8A8, + TEGRA210_IMAGE_FORMAT_T_R8G8B8A8, + TEGRA210_IMAGE_FORMAT_T_A2B10G10R10, + TEGRA210_IMAGE_FORMAT_T_A2R10G10B10, + TEGRA210_IMAGE_FORMAT_T_B10G10R10A2, + TEGRA210_IMAGE_FORMAT_T_R10G10B10A2, + + TEGRA210_IMAGE_FORMAT_T_A8Y8U8V8 = 193, + TEGRA210_IMAGE_FORMAT_T_V8U8Y8A8, + + TEGRA210_IMAGE_FORMAT_T_A2Y10U10V10 = 197, + TEGRA210_IMAGE_FORMAT_T_V10U10Y10A2, + TEGRA210_IMAGE_FORMAT_T_Y8_U8__Y8_V8, + TEGRA210_IMAGE_FORMAT_T_Y8_V8__Y8_U8, + TEGRA210_IMAGE_FORMAT_T_U8_Y8__V8_Y8, + TEGRA210_IMAGE_FORMAT_T_V8_Y8__U8_Y8, + + TEGRA210_IMAGE_FORMAT_T_Y8__U8__V8_N444 = 224, + TEGRA210_IMAGE_FORMAT_T_Y8__U8V8_N444, + TEGRA210_IMAGE_FORMAT_T_Y8__V8U8_N444, + TEGRA210_IMAGE_FORMAT_T_Y8__U8__V8_N422, + TEGRA210_IMAGE_FORMAT_T_Y8__U8V8_N422, + TEGRA210_IMAGE_FORMAT_T_Y8__V8U8_N422, + TEGRA210_IMAGE_FORMAT_T_Y8__U8__V8_N420, + TEGRA210_IMAGE_FORMAT_T_Y8__U8V8_N420, + TEGRA210_IMAGE_FORMAT_T_Y8__V8U8_N420, + TEGRA210_IMAGE_FORMAT_T_X2LC10LB10LA10, + TEGRA210_IMAGE_FORMAT_T_A2R6R6R6R6R6, +}; + +#define TEGRA210_VIDEO_FMT(DATA_TYPE, BIT_WIDTH, MBUS_CODE, BPP, \ + FORMAT, FOURCC) \ +{ \ + TEGRA_IMAGE_DT_##DATA_TYPE, \ + BIT_WIDTH, \ + MEDIA_BUS_FMT_##MBUS_CODE, \ + BPP, \ + TEGRA210_IMAGE_FORMAT_##FORMAT, \ + V4L2_PIX_FMT_##FOURCC, \ +} + +/* Tegra210 supported video formats */ +const struct tegra_video_format tegra210_video_formats[] = { + /* RAW 8 */ + TEGRA210_VIDEO_FMT(RAW8, 8, SRGGB8_1X8, 1, T_L8, SRGGB8), + TEGRA210_VIDEO_FMT(RAW8, 8, SGRBG8_1X8, 1, T_L8, SGRBG8), + TEGRA210_VIDEO_FMT(RAW8, 8, SGBRG8_1X8, 1, T_L8, SGBRG8), + TEGRA210_VIDEO_FMT(RAW8, 8, SBGGR8_1X8, 1, T_L8, SBGGR8), + /* RAW 10 */ + TEGRA210_VIDEO_FMT(RAW10, 10, SRGGB10_1X10, 2, T_R16_I, SRGGB10), + TEGRA210_VIDEO_FMT(RAW10, 10, SGRBG10_1X10, 2, T_R16_I, SGRBG10), + TEGRA210_VIDEO_FMT(RAW10, 10, SGBRG10_1X10, 2, T_R16_I, SGBRG10), + TEGRA210_VIDEO_FMT(RAW10, 10, SBGGR10_1X10, 2, T_R16_I, SBGGR10), + /* RAW 12 */ + TEGRA210_VIDEO_FMT(RAW12, 12, SRGGB12_1X12, 2, T_R16_I, SRGGB12), + TEGRA210_VIDEO_FMT(RAW12, 12, SGRBG12_1X12, 2, T_R16_I, SGRBG12), + TEGRA210_VIDEO_FMT(RAW12, 12, SGBRG12_1X12, 2, T_R16_I, SGBRG12), + TEGRA210_VIDEO_FMT(RAW12, 12, SBGGR12_1X12, 2, T_R16_I, SBGGR12), + /* RGB888 */ + TEGRA210_VIDEO_FMT(RGB888, 24, RGB888_1X24, 4, T_A8R8G8B8, RGB24), + TEGRA210_VIDEO_FMT(RGB888, 24, RGB888_1X32_PADHI, 4, T_A8B8G8R8, + XBGR32), + /* YUV422 */ + TEGRA210_VIDEO_FMT(YUV422_8, 16, UYVY8_1X16, 2, T_U8_Y8__V8_Y8, UYVY), + TEGRA210_VIDEO_FMT(YUV422_8, 16, VYUY8_1X16, 2, T_V8_Y8__U8_Y8, VYUY), + TEGRA210_VIDEO_FMT(YUV422_8, 16, YUYV8_1X16, 2, T_Y8_U8__Y8_V8, YUYV), + TEGRA210_VIDEO_FMT(YUV422_8, 16, YVYU8_1X16, 2, T_Y8_V8__Y8_U8, YVYU), + TEGRA210_VIDEO_FMT(YUV422_8, 16, UYVY8_1X16, 1, T_Y8__V8U8_N422, NV16), + TEGRA210_VIDEO_FMT(YUV422_8, 16, UYVY8_2X8, 2, T_U8_Y8__V8_Y8, UYVY), + TEGRA210_VIDEO_FMT(YUV422_8, 16, VYUY8_2X8, 2, T_V8_Y8__U8_Y8, VYUY), + TEGRA210_VIDEO_FMT(YUV422_8, 16, YUYV8_2X8, 2, T_Y8_U8__Y8_V8, YUYV), + TEGRA210_VIDEO_FMT(YUV422_8, 16, YVYU8_2X8, 2, T_Y8_V8__Y8_U8, YVYU), +}; + +/* Tegra210 VI operations */ +static const struct tegra_vi_ops tegra210_vi_ops = { + .vi_start_streaming = tegra210_vi_start_streaming, + .vi_stop_streaming = tegra210_vi_stop_streaming, +}; + +/* Tegra210 VI SoC data */ +const struct tegra_vi_soc tegra210_vi_soc = { + .video_formats = tegra210_video_formats, + .nformats = ARRAY_SIZE(tegra210_video_formats), + .ops = &tegra210_vi_ops, + .hw_revision = 3, + .vi_max_channels = 6, + .vi_max_clk_hz = 499200000, +}; + +/* -------------------------------------------------------------------- */ + +/* Tegra210 CSI PHY registers accessors */ +static void csi_write(struct tegra_csi *csi, u8 portno, unsigned int addr, + u32 val) +{ + void __iomem *csi_pp_base; + + csi_pp_base = csi->iomem + CSI_PP_OFFSET(portno >> 1); + + writel_relaxed(val, csi_pp_base + addr); +} + +/* Tegra210 CSI Pixel parser registers accessors */ +static void pp_write(struct tegra_csi *csi, u8 portno, u32 addr, u32 val) +{ + void __iomem *csi_pp_base; + unsigned int offset; + + csi_pp_base = csi->iomem + CSI_PP_OFFSET(portno >> 1); + offset = (portno % CSI_PORTS_PER_BRICK) * TEGRA210_CSI_PORT_OFFSET; + + writel_relaxed(val, csi_pp_base + offset + addr); +} + +static u32 pp_read(struct tegra_csi *csi, u8 portno, u32 addr) +{ + void __iomem *csi_pp_base; + unsigned int offset; + + csi_pp_base = csi->iomem + CSI_PP_OFFSET(portno >> 1); + offset = (portno % CSI_PORTS_PER_BRICK) * TEGRA210_CSI_PORT_OFFSET; + + return readl_relaxed(csi_pp_base + offset + addr); +} + +/* Tegra210 CSI CIL A/B port registers accessors */ +static void cil_write(struct tegra_csi *csi, u8 portno, u32 addr, u32 val) +{ + void __iomem *csi_cil_base; + unsigned int offset; + + csi_cil_base = csi->iomem + CSI_PP_OFFSET(portno >> 1) + + TEGRA210_CSI_CIL_OFFSET; + offset = (portno % CSI_PORTS_PER_BRICK) * TEGRA210_CSI_PORT_OFFSET; + + writel_relaxed(val, csi_cil_base + offset + addr); +} + +static u32 cil_read(struct tegra_csi *csi, u8 portno, u32 addr) +{ + void __iomem *csi_cil_base; + unsigned int offset; + + csi_cil_base = csi->iomem + CSI_PP_OFFSET(portno >> 1) + + TEGRA210_CSI_CIL_OFFSET; + offset = (portno % CSI_PORTS_PER_BRICK) * TEGRA210_CSI_PORT_OFFSET; + + return readl_relaxed(csi_cil_base + offset + addr); +} + +/* Tegra210 CSI Test pattern generator registers accessor */ +static void tpg_write(struct tegra_csi *csi, u8 portno, unsigned int addr, + u32 val) +{ + void __iomem *csi_pp_base; + unsigned int offset; + + csi_pp_base = csi->iomem + CSI_PP_OFFSET(portno >> 1); + offset = (portno % CSI_PORTS_PER_BRICK) * TEGRA210_CSI_PORT_OFFSET + + TEGRA210_CSI_TPG_OFFSET; + + writel_relaxed(val, csi_pp_base + offset + addr); +} + +/* + * Tegra210 CSI operations + */ +static void tegra210_csi_error_recover(struct tegra_csi_channel *csi_chan) +{ + struct tegra_csi *csi = csi_chan->csi; + unsigned int port_num = csi_chan->csi_port_num; + u32 val; + + /* + * Recover CSI hardware in case of capture errors by issuing + * software reset to CSICIL sensor, pixel parser, and clear errors + * to have clean capture on next streaming. + */ + val = pp_read(csi, port_num, TEGRA_CSI_PIXEL_PARSER_STATUS); + dev_dbg(csi->dev, "TEGRA_CSI_PIXEL_PARSER_STATUS 0x%08x\n", val); + + val = cil_read(csi, port_num, TEGRA_CSI_CIL_STATUS); + dev_dbg(csi->dev, "TEGRA_CSI_CIL_STATUS 0x%08x\n", val); + + val = cil_read(csi, port_num, TEGRA_CSI_CILX_STATUS); + dev_dbg(csi->dev, "TEGRA_CSI_CILX_STATUS 0x%08x\n", val); + + if (csi_chan->numlanes == 4) { + /* reset CSI CIL sensor */ + cil_write(csi, port_num, TEGRA_CSI_CIL_SW_SENSOR_RESET, 0x1); + cil_write(csi, port_num + 1, + TEGRA_CSI_CIL_SW_SENSOR_RESET, 0x1); + /* + * SW_STATUS_RESET resets all status bits of PPA, PPB, CILA, + * CILB status registers and debug counters. + * So, SW_STATUS_RESET can be used only when CSI Brick is in + * x4 mode. + */ + csi_write(csi, port_num, TEGRA_CSI_CSI_SW_STATUS_RESET, 0x1); + + /* sleep for 20 clock cycles to drain the FIFO */ + usleep_range(10, 20); + + cil_write(csi, port_num + 1, + TEGRA_CSI_CIL_SW_SENSOR_RESET, 0x0); + cil_write(csi, port_num, TEGRA_CSI_CIL_SW_SENSOR_RESET, 0x0); + csi_write(csi, port_num, TEGRA_CSI_CSI_SW_STATUS_RESET, 0x0); + } else { + /* reset CSICIL sensor */ + cil_write(csi, port_num, TEGRA_CSI_CIL_SW_SENSOR_RESET, 0x1); + usleep_range(10, 20); + cil_write(csi, port_num, TEGRA_CSI_CIL_SW_SENSOR_RESET, 0x0); + + /* clear the errors */ + pp_write(csi, port_num, TEGRA_CSI_PIXEL_PARSER_STATUS, + 0xffffffff); + cil_write(csi, port_num, TEGRA_CSI_CIL_STATUS, 0xffffffff); + cil_write(csi, port_num, TEGRA_CSI_CILX_STATUS, 0xffffffff); + } +} + +static int tegra210_csi_streaming(struct tegra_csi_channel *csi_chan, + u8 pg_mode, int enable) +{ + struct tegra_csi *csi = csi_chan->csi; + unsigned int port_num = csi_chan->csi_port_num; + u32 val; + + if (enable) { + csi_write(csi, port_num, TEGRA_CSI_CLKEN_OVERRIDE, 0); + + /* clean up status */ + pp_write(csi, port_num, TEGRA_CSI_PIXEL_PARSER_STATUS, + 0xffffffff); + cil_write(csi, port_num, TEGRA_CSI_CIL_STATUS, 0xffffffff); + cil_write(csi, port_num, TEGRA_CSI_CILX_STATUS, 0xffffffff); + cil_write(csi, port_num, TEGRA_CSI_CIL_INTERRUPT_MASK, 0x0); + + /* CIL PHY registers setup */ + cil_write(csi, port_num, TEGRA_CSI_CIL_PAD_CONFIG0, 0x0); + cil_write(csi, port_num, TEGRA_CSI_CIL_PHY_CONTROL, 0xa); + + /* + * The CSI unit provides for connection of up to six cameras in + * the system and is organized as three identical instances of + * two MIPI support blocks, each with a separate 4-lane + * interface that can be configured as a single camera with 4 + * lanes or as a dual camera with 2 lanes available for each + * camera. + */ + if (csi_chan->numlanes == 4) { + cil_write(csi, port_num + 1, + TEGRA_CSI_CIL_STATUS, 0xffffffff); + cil_write(csi, port_num + 1, + TEGRA_CSI_CILX_STATUS, 0xffffffff); + cil_write(csi, port_num + 1, + TEGRA_CSI_CIL_INTERRUPT_MASK, 0x0); + + cil_write(csi, port_num, + TEGRA_CSI_CIL_PAD_CONFIG0, BRICK_CLOCK_A_4X); + cil_write(csi, port_num + 1, + TEGRA_CSI_CIL_PAD_CONFIG0, 0x0); + cil_write(csi, port_num + 1, + TEGRA_CSI_CIL_INTERRUPT_MASK, 0x0); + cil_write(csi, port_num + 1, + TEGRA_CSI_CIL_PHY_CONTROL, 0xa); + csi_write(csi, port_num, TEGRA_CSI_PHY_CIL_COMMAND, + CSI_A_PHY_CIL_ENABLE | CSI_B_PHY_CIL_ENABLE); + } else { + val = ((port_num & 1) == PORT_A) ? + CSI_A_PHY_CIL_ENABLE | CSI_B_PHY_CIL_NOP : + CSI_B_PHY_CIL_ENABLE | CSI_A_PHY_CIL_NOP; + csi_write(csi, port_num, TEGRA_CSI_PHY_CIL_COMMAND, + val); + } + + /* CSI pixel parser registers setup */ + pp_write(csi, port_num, TEGRA_CSI_PIXEL_STREAM_PP_COMMAND, + (0xf << CSI_PP_START_MARKER_FRAME_MAX_OFFSET) | + CSI_PP_SINGLE_SHOT_ENABLE | CSI_PP_RST); + pp_write(csi, port_num, TEGRA_CSI_PIXEL_PARSER_INTERRUPT_MASK, + 0x0); + pp_write(csi, port_num, TEGRA_CSI_PIXEL_STREAM_CONTROL0, + CSI_PP_PACKET_HEADER_SENT | + CSI_PP_DATA_IDENTIFIER_ENABLE | + CSI_PP_WORD_COUNT_SELECT_HEADER | + CSI_PP_CRC_CHECK_ENABLE | CSI_PP_WC_CHECK | + CSI_PP_OUTPUT_FORMAT_STORE | CSI_PPA_PAD_LINE_NOPAD | + CSI_PP_HEADER_EC_DISABLE | CSI_PPA_PAD_FRAME_NOPAD | + (port_num & 1)); + pp_write(csi, port_num, TEGRA_CSI_PIXEL_STREAM_CONTROL1, + (0x1 << CSI_PP_TOP_FIELD_FRAME_OFFSET) | + (0x1 << CSI_PP_TOP_FIELD_FRAME_MASK_OFFSET)); + pp_write(csi, port_num, TEGRA_CSI_PIXEL_STREAM_GAP, + 0x14 << PP_FRAME_MIN_GAP_OFFSET); + pp_write(csi, port_num, TEGRA_CSI_PIXEL_STREAM_EXPECTED_FRAME, + 0x0); + pp_write(csi, port_num, TEGRA_CSI_INPUT_STREAM_CONTROL, + (0x3f << CSI_SKIP_PACKET_THRESHOLD_OFFSET) | + (csi_chan->numlanes - 1)); + + /* TPG setup */ + if (pg_mode) { + tpg_write(csi, port_num, + TEGRA_CSI_PATTERN_GENERATOR_CTRL, + ((pg_mode - 1) << PG_MODE_OFFSET) | + PG_ENABLE); + tpg_write(csi, port_num, TEGRA_CSI_PG_BLANK, + csi_chan->v_blank << PG_VBLANK_OFFSET | + csi_chan->h_blank); + tpg_write(csi, port_num, TEGRA_CSI_PG_PHASE, 0x0); + tpg_write(csi, port_num, TEGRA_CSI_PG_RED_FREQ, + (0x10 << PG_RED_VERT_INIT_FREQ_OFFSET) | + (0x10 << PG_RED_HOR_INIT_FREQ_OFFSET)); + tpg_write(csi, port_num, TEGRA_CSI_PG_RED_FREQ_RATE, + 0x0); + tpg_write(csi, port_num, TEGRA_CSI_PG_GREEN_FREQ, + (0x10 << PG_GREEN_VERT_INIT_FREQ_OFFSET) | + (0x10 << PG_GREEN_HOR_INIT_FREQ_OFFSET)); + tpg_write(csi, port_num, TEGRA_CSI_PG_GREEN_FREQ_RATE, + 0x0); + tpg_write(csi, port_num, TEGRA_CSI_PG_BLUE_FREQ, + (0x10 << PG_BLUE_VERT_INIT_FREQ_OFFSET) | + (0x10 << PG_BLUE_HOR_INIT_FREQ_OFFSET)); + tpg_write(csi, port_num, TEGRA_CSI_PG_BLUE_FREQ_RATE, + 0x0); + } + + pp_write(csi, port_num, TEGRA_CSI_PIXEL_STREAM_PP_COMMAND, + (0xf << CSI_PP_START_MARKER_FRAME_MAX_OFFSET) | + CSI_PP_SINGLE_SHOT_ENABLE | CSI_PP_ENABLE); + } else { + val = pp_read(csi, port_num, TEGRA_CSI_PIXEL_PARSER_STATUS); + + dev_dbg(csi->dev, + "TEGRA_CSI_PIXEL_PARSER_STATUS 0x%08x\n", val); + pp_write(csi, port_num, TEGRA_CSI_PIXEL_PARSER_STATUS, val); + + val = cil_read(csi, port_num, TEGRA_CSI_CIL_STATUS); + dev_dbg(csi->dev, "TEGRA_CSI_CIL_STATUS 0x%08x\n", val); + cil_write(csi, port_num, TEGRA_CSI_CIL_STATUS, val); + + val = cil_read(csi, port_num, TEGRA_CSI_CILX_STATUS); + dev_dbg(csi->dev, "TEGRA_CSI_CILX_STATUS 0x%08x\n", val); + cil_write(csi, port_num, TEGRA_CSI_CILX_STATUS, val); + + pp_write(csi, port_num, TEGRA_CSI_PIXEL_STREAM_PP_COMMAND, + (0xf << CSI_PP_START_MARKER_FRAME_MAX_OFFSET) | + CSI_PP_DISABLE); + + if (pg_mode) { + tpg_write(csi, port_num, + TEGRA_CSI_PATTERN_GENERATOR_CTRL, + PG_DISABLE); + return 0; + } + + if (csi_chan->numlanes == 4) { + csi_write(csi, port_num, TEGRA_CSI_PHY_CIL_COMMAND, + CSI_A_PHY_CIL_DISABLE | + CSI_B_PHY_CIL_DISABLE); + + } else { + val = ((port_num & 1) == PORT_A) ? + CSI_A_PHY_CIL_DISABLE | CSI_B_PHY_CIL_NOP : + CSI_B_PHY_CIL_DISABLE | CSI_A_PHY_CIL_NOP; + csi_write(csi, port_num, TEGRA_CSI_PHY_CIL_COMMAND, + val); + } + } + + return 0; +} + +/* + * Tegra210 CSI TPG frame rate table with horizontal and vertical + * blanking intervals for corresponding format and resolution. + * Blanking intervals are tuned values from design team for max TPG + * clock rate. + */ +static const struct tpg_framerate tegra210_tpg_frmrate_table[] = { + { + .frmsize = { 1280, 720 }, + .code = MEDIA_BUS_FMT_SRGGB10_1X10, + .framerate = 120, + .h_blank = 512, + .v_blank = 8, + }, + { + .frmsize = { 1920, 1080 }, + .code = MEDIA_BUS_FMT_SRGGB10_1X10, + .framerate = 60, + .h_blank = 512, + .v_blank = 8, + }, + { + .frmsize = { 3840, 2160 }, + .code = MEDIA_BUS_FMT_SRGGB10_1X10, + .framerate = 20, + .h_blank = 8, + .v_blank = 8, + }, + { + .frmsize = { 1280, 720 }, + .code = MEDIA_BUS_FMT_RGB888_1X32_PADHI, + .framerate = 60, + .h_blank = 512, + .v_blank = 8, + }, + { + .frmsize = { 1920, 1080 }, + .code = MEDIA_BUS_FMT_RGB888_1X32_PADHI, + .framerate = 30, + .h_blank = 512, + .v_blank = 8, + }, + { + .frmsize = { 3840, 2160 }, + .code = MEDIA_BUS_FMT_RGB888_1X32_PADHI, + .framerate = 8, + .h_blank = 8, + .v_blank = 8, + }, +}; + +static const char * const tegra210_csi_cil_clks[] = { + "csi", + "cilab", + "cilcd", + "cile", + "csi_tpg", +}; + +/* Tegra210 CSI operations */ +static const struct tegra_csi_ops tegra210_csi_ops = { + .csi_streaming = tegra210_csi_streaming, + .csi_err_recover = tegra210_csi_error_recover, +}; + +/* Tegra210 CSI SoC data */ +const struct tegra_csi_soc tegra210_csi_soc = { + .ops = &tegra210_csi_ops, + .csi_max_channels = 6, + .clk_names = tegra210_csi_cil_clks, + .num_clks = ARRAY_SIZE(tegra210_csi_cil_clks), + .tpg_frmrate_table = tegra210_tpg_frmrate_table, + .tpg_frmrate_table_size = ARRAY_SIZE(tegra210_tpg_frmrate_table), +}; diff --git a/drivers/staging/media/tegra-video/vi.c b/drivers/staging/media/tegra-video/vi.c new file mode 100644 index 0000000..f4caf25 --- /dev/null +++ b/drivers/staging/media/tegra-video/vi.c @@ -0,0 +1,1078 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * Copyright (C) 2020 NVIDIA CORPORATION. All rights reserved. + */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#include +#include +#include +#include +#include + +#include + +#include "vi.h" +#include "video.h" + +#define SURFACE_ALIGN_BYTES 64 +#define MAX_CID_CONTROLS 1 + +static const struct tegra_video_format tegra_default_format = { + .img_dt = TEGRA_IMAGE_DT_RAW10, + .bit_width = 10, + .code = MEDIA_BUS_FMT_SRGGB10_1X10, + .bpp = 2, + .img_fmt = TEGRA_IMAGE_FORMAT_DEF, + .fourcc = V4L2_PIX_FMT_SRGGB10, +}; + +static inline struct tegra_vi * +host1x_client_to_vi(struct host1x_client *client) +{ + return container_of(client, struct tegra_vi, client); +} + +static inline struct tegra_channel_buffer * +to_tegra_channel_buffer(struct vb2_v4l2_buffer *vb) +{ + return container_of(vb, struct tegra_channel_buffer, buf); +} + +static int tegra_get_format_idx_by_code(struct tegra_vi *vi, + unsigned int code) +{ + unsigned int i; + + for (i = 0; i < vi->soc->nformats; ++i) { + if (vi->soc->video_formats[i].code == code) + return i; + } + + return -1; +} + +static u32 tegra_get_format_fourcc_by_idx(struct tegra_vi *vi, + unsigned int index) +{ + if (index >= vi->soc->nformats) + return -EINVAL; + + return vi->soc->video_formats[index].fourcc; +} + +static const struct tegra_video_format * +tegra_get_format_by_fourcc(struct tegra_vi *vi, u32 fourcc) +{ + unsigned int i; + + for (i = 0; i < vi->soc->nformats; ++i) { + if (vi->soc->video_formats[i].fourcc == fourcc) + return &vi->soc->video_formats[i]; + } + + return NULL; +} + +/* + * videobuf2 queue operations + */ +static int tegra_channel_queue_setup(struct vb2_queue *vq, + unsigned int *nbuffers, + unsigned int *nplanes, + unsigned int sizes[], + struct device *alloc_devs[]) +{ + struct tegra_vi_channel *chan = vb2_get_drv_priv(vq); + + if (*nplanes) + return sizes[0] < chan->format.sizeimage ? -EINVAL : 0; + + *nplanes = 1; + sizes[0] = chan->format.sizeimage; + alloc_devs[0] = chan->vi->dev; + + return 0; +} + +static int tegra_channel_buffer_prepare(struct vb2_buffer *vb) +{ + struct tegra_vi_channel *chan = vb2_get_drv_priv(vb->vb2_queue); + struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb); + struct tegra_channel_buffer *buf = to_tegra_channel_buffer(vbuf); + unsigned long size = chan->format.sizeimage; + + if (vb2_plane_size(vb, 0) < size) { + v4l2_err(chan->video.v4l2_dev, + "buffer too small (%lu < %lu)\n", + vb2_plane_size(vb, 0), size); + return -EINVAL; + } + + vb2_set_plane_payload(vb, 0, size); + buf->chan = chan; + buf->addr = vb2_dma_contig_plane_dma_addr(vb, 0); + + return 0; +} + +static void tegra_channel_buffer_queue(struct vb2_buffer *vb) +{ + struct tegra_vi_channel *chan = vb2_get_drv_priv(vb->vb2_queue); + struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb); + struct tegra_channel_buffer *buf = to_tegra_channel_buffer(vbuf); + + /* put buffer into the capture queue */ + spin_lock(&chan->start_lock); + list_add_tail(&buf->queue, &chan->capture); + spin_unlock(&chan->start_lock); + + /* wait up kthread for capture */ + wake_up_interruptible(&chan->start_wait); +} + +struct v4l2_subdev * +tegra_channel_get_remote_subdev(struct tegra_vi_channel *chan) +{ + struct media_pad *pad; + struct v4l2_subdev *subdev; + struct media_entity *entity; + + pad = media_entity_remote_pad(&chan->pad); + entity = pad->entity; + subdev = media_entity_to_v4l2_subdev(entity); + + return subdev; +} + +int tegra_channel_set_stream(struct tegra_vi_channel *chan, bool on) +{ + struct v4l2_subdev *subdev; + int ret; + + /* stream CSI */ + subdev = tegra_channel_get_remote_subdev(chan); + ret = v4l2_subdev_call(subdev, video, s_stream, on); + if (on && ret < 0 && ret != -ENOIOCTLCMD) + return ret; + + return 0; +} + +void tegra_channel_release_buffers(struct tegra_vi_channel *chan, + enum vb2_buffer_state state) +{ + struct tegra_channel_buffer *buf, *nbuf; + + spin_lock(&chan->start_lock); + list_for_each_entry_safe(buf, nbuf, &chan->capture, queue) { + vb2_buffer_done(&buf->buf.vb2_buf, state); + list_del(&buf->queue); + } + + spin_unlock(&chan->start_lock); + + spin_lock(&chan->done_lock); + list_for_each_entry_safe(buf, nbuf, &chan->done, queue) { + vb2_buffer_done(&buf->buf.vb2_buf, state); + list_del(&buf->queue); + } + + spin_unlock(&chan->done_lock); +} + +static int tegra_channel_start_streaming(struct vb2_queue *vq, u32 count) +{ + struct tegra_vi_channel *chan = vb2_get_drv_priv(vq); + int ret; + + ret = pm_runtime_get_sync(chan->vi->dev); + if (ret < 0) { + dev_err(chan->vi->dev, "failed to get runtime PM: %d\n", ret); + pm_runtime_put_noidle(chan->vi->dev); + return ret; + } + + ret = chan->vi->ops->vi_start_streaming(vq, count); + if (ret < 0) + pm_runtime_put(chan->vi->dev); + + return ret; +} + +static void tegra_channel_stop_streaming(struct vb2_queue *vq) +{ + struct tegra_vi_channel *chan = vb2_get_drv_priv(vq); + + chan->vi->ops->vi_stop_streaming(vq); + pm_runtime_put(chan->vi->dev); +} + +static const struct vb2_ops tegra_channel_queue_qops = { + .queue_setup = tegra_channel_queue_setup, + .buf_prepare = tegra_channel_buffer_prepare, + .buf_queue = tegra_channel_buffer_queue, + .wait_prepare = vb2_ops_wait_prepare, + .wait_finish = vb2_ops_wait_finish, + .start_streaming = tegra_channel_start_streaming, + .stop_streaming = tegra_channel_stop_streaming, +}; + +/* + * V4L2 ioctl operations + */ +static int tegra_channel_querycap(struct file *file, void *fh, + struct v4l2_capability *cap) +{ + struct tegra_vi_channel *chan = video_drvdata(file); + + strscpy(cap->driver, "tegra-video", sizeof(cap->driver)); + strscpy(cap->card, chan->video.name, sizeof(cap->card)); + snprintf(cap->bus_info, sizeof(cap->bus_info), "platform:%s", + dev_name(chan->vi->dev)); + + return 0; +} + +static int tegra_channel_g_parm(struct file *file, void *fh, + struct v4l2_streamparm *a) +{ + struct tegra_vi_channel *chan = video_drvdata(file); + struct v4l2_subdev *subdev; + + subdev = tegra_channel_get_remote_subdev(chan); + return v4l2_g_parm_cap(&chan->video, subdev, a); +} + +static int tegra_channel_s_parm(struct file *file, void *fh, + struct v4l2_streamparm *a) +{ + struct tegra_vi_channel *chan = video_drvdata(file); + struct v4l2_subdev *subdev; + + subdev = tegra_channel_get_remote_subdev(chan); + return v4l2_s_parm_cap(&chan->video, subdev, a); +} + +static int tegra_channel_enum_framesizes(struct file *file, void *fh, + struct v4l2_frmsizeenum *sizes) +{ + int ret; + struct tegra_vi_channel *chan = video_drvdata(file); + struct v4l2_subdev *subdev; + const struct tegra_video_format *fmtinfo; + struct v4l2_subdev_frame_size_enum fse = { + .index = sizes->index, + .which = V4L2_SUBDEV_FORMAT_ACTIVE, + }; + + fmtinfo = tegra_get_format_by_fourcc(chan->vi, sizes->pixel_format); + if (!fmtinfo) + return -EINVAL; + + fse.code = fmtinfo->code; + + subdev = tegra_channel_get_remote_subdev(chan); + ret = v4l2_subdev_call(subdev, pad, enum_frame_size, NULL, &fse); + if (ret) + return ret; + + sizes->type = V4L2_FRMSIZE_TYPE_DISCRETE; + sizes->discrete.width = fse.max_width; + sizes->discrete.height = fse.max_height; + + return 0; +} + +static int tegra_channel_enum_frameintervals(struct file *file, void *fh, + struct v4l2_frmivalenum *ivals) +{ + int ret; + struct tegra_vi_channel *chan = video_drvdata(file); + struct v4l2_subdev *subdev; + const struct tegra_video_format *fmtinfo; + struct v4l2_subdev_frame_interval_enum fie = { + .index = ivals->index, + .width = ivals->width, + .height = ivals->height, + .which = V4L2_SUBDEV_FORMAT_ACTIVE, + }; + + fmtinfo = tegra_get_format_by_fourcc(chan->vi, ivals->pixel_format); + if (!fmtinfo) + return -EINVAL; + + fie.code = fmtinfo->code; + + subdev = tegra_channel_get_remote_subdev(chan); + ret = v4l2_subdev_call(subdev, pad, enum_frame_interval, NULL, &fie); + if (ret) + return ret; + + ivals->type = V4L2_FRMIVAL_TYPE_DISCRETE; + ivals->discrete.numerator = fie.interval.numerator; + ivals->discrete.denominator = fie.interval.denominator; + + return 0; +} + +static int tegra_channel_enum_format(struct file *file, void *fh, + struct v4l2_fmtdesc *f) +{ + struct tegra_vi_channel *chan = video_drvdata(file); + unsigned int index = 0, i; + unsigned long *fmts_bitmap = chan->tpg_fmts_bitmap; + + if (f->index >= bitmap_weight(fmts_bitmap, MAX_FORMAT_NUM)) + return -EINVAL; + + for (i = 0; i < f->index + 1; i++, index++) + index = find_next_bit(fmts_bitmap, MAX_FORMAT_NUM, index); + + f->pixelformat = tegra_get_format_fourcc_by_idx(chan->vi, index - 1); + + return 0; +} + +static int tegra_channel_get_format(struct file *file, void *fh, + struct v4l2_format *format) +{ + struct tegra_vi_channel *chan = video_drvdata(file); + + format->fmt.pix = chan->format; + + return 0; +} + +static void tegra_channel_fmt_align(struct tegra_vi_channel *chan, + struct v4l2_pix_format *pix, + unsigned int bpp) +{ + unsigned int align; + unsigned int min_width; + unsigned int max_width; + unsigned int width; + unsigned int min_bpl; + unsigned int max_bpl; + unsigned int bpl; + + /* + * The transfer alignment requirements are expressed in bytes. Compute + * minimum and maximum values, clamp the requested width and convert + * it back to pixels. Use bytesperline to adjust the width. + */ + align = lcm(SURFACE_ALIGN_BYTES, bpp); + min_width = roundup(TEGRA_MIN_WIDTH, align); + max_width = rounddown(TEGRA_MAX_WIDTH, align); + width = roundup(pix->width * bpp, align); + + pix->width = clamp(width, min_width, max_width) / bpp; + pix->height = clamp(pix->height, TEGRA_MIN_HEIGHT, TEGRA_MAX_HEIGHT); + + /* Clamp the requested bytes per line value. If the maximum bytes per + * line value is zero, the module doesn't support user configurable + * line sizes. Override the requested value with the minimum in that + * case. + */ + min_bpl = pix->width * bpp; + max_bpl = rounddown(TEGRA_MAX_WIDTH, SURFACE_ALIGN_BYTES); + bpl = roundup(pix->bytesperline, SURFACE_ALIGN_BYTES); + + pix->bytesperline = clamp(bpl, min_bpl, max_bpl); + pix->sizeimage = pix->bytesperline * pix->height; +} + +static int __tegra_channel_try_format(struct tegra_vi_channel *chan, + struct v4l2_pix_format *pix) +{ + const struct tegra_video_format *fmtinfo; + struct v4l2_subdev *subdev; + struct v4l2_subdev_format fmt; + struct v4l2_subdev_pad_config *pad_cfg; + + subdev = tegra_channel_get_remote_subdev(chan); + pad_cfg = v4l2_subdev_alloc_pad_config(subdev); + if (!pad_cfg) + return -ENOMEM; + /* + * Retrieve the format information and if requested format isn't + * supported, keep the current format. + */ + fmtinfo = tegra_get_format_by_fourcc(chan->vi, pix->pixelformat); + if (!fmtinfo) { + pix->pixelformat = chan->format.pixelformat; + pix->colorspace = chan->format.colorspace; + fmtinfo = tegra_get_format_by_fourcc(chan->vi, + pix->pixelformat); + } + + pix->field = V4L2_FIELD_NONE; + fmt.which = V4L2_SUBDEV_FORMAT_TRY; + fmt.pad = 0; + v4l2_fill_mbus_format(&fmt.format, pix, fmtinfo->code); + v4l2_subdev_call(subdev, pad, set_fmt, pad_cfg, &fmt); + v4l2_fill_pix_format(pix, &fmt.format); + tegra_channel_fmt_align(chan, pix, fmtinfo->bpp); + + v4l2_subdev_free_pad_config(pad_cfg); + + return 0; +} + +static int tegra_channel_try_format(struct file *file, void *fh, + struct v4l2_format *format) +{ + struct tegra_vi_channel *chan = video_drvdata(file); + + return __tegra_channel_try_format(chan, &format->fmt.pix); +} + +static int tegra_channel_set_format(struct file *file, void *fh, + struct v4l2_format *format) +{ + struct tegra_vi_channel *chan = video_drvdata(file); + const struct tegra_video_format *fmtinfo; + struct v4l2_subdev_format fmt; + struct v4l2_subdev *subdev; + struct v4l2_pix_format *pix = &format->fmt.pix; + int ret; + + if (vb2_is_busy(&chan->queue)) + return -EBUSY; + + /* get supported format by try_fmt */ + ret = __tegra_channel_try_format(chan, pix); + if (ret) + return ret; + + fmtinfo = tegra_get_format_by_fourcc(chan->vi, pix->pixelformat); + + fmt.which = V4L2_SUBDEV_FORMAT_ACTIVE; + fmt.pad = 0; + v4l2_fill_mbus_format(&fmt.format, pix, fmtinfo->code); + subdev = tegra_channel_get_remote_subdev(chan); + v4l2_subdev_call(subdev, pad, set_fmt, NULL, &fmt); + v4l2_fill_pix_format(pix, &fmt.format); + tegra_channel_fmt_align(chan, pix, fmtinfo->bpp); + + chan->format = *pix; + chan->fmtinfo = fmtinfo; + + return 0; +} + +static int tegra_channel_enum_input(struct file *file, void *fh, + struct v4l2_input *inp) +{ + /* currently driver supports internal TPG only */ + if (inp->index) + return -EINVAL; + + inp->type = V4L2_INPUT_TYPE_CAMERA; + strscpy(inp->name, "Tegra TPG", sizeof(inp->name)); + + return 0; +} + +static int tegra_channel_g_input(struct file *file, void *priv, + unsigned int *i) +{ + *i = 0; + + return 0; +} + +static int tegra_channel_s_input(struct file *file, void *priv, + unsigned int input) +{ + if (input > 0) + return -EINVAL; + + return 0; +} + +static const struct v4l2_ioctl_ops tegra_channel_ioctl_ops = { + .vidioc_querycap = tegra_channel_querycap, + .vidioc_g_parm = tegra_channel_g_parm, + .vidioc_s_parm = tegra_channel_s_parm, + .vidioc_enum_framesizes = tegra_channel_enum_framesizes, + .vidioc_enum_frameintervals = tegra_channel_enum_frameintervals, + .vidioc_enum_fmt_vid_cap = tegra_channel_enum_format, + .vidioc_g_fmt_vid_cap = tegra_channel_get_format, + .vidioc_s_fmt_vid_cap = tegra_channel_set_format, + .vidioc_try_fmt_vid_cap = tegra_channel_try_format, + .vidioc_enum_input = tegra_channel_enum_input, + .vidioc_g_input = tegra_channel_g_input, + .vidioc_s_input = tegra_channel_s_input, + .vidioc_reqbufs = vb2_ioctl_reqbufs, + .vidioc_prepare_buf = vb2_ioctl_prepare_buf, + .vidioc_querybuf = vb2_ioctl_querybuf, + .vidioc_qbuf = vb2_ioctl_qbuf, + .vidioc_dqbuf = vb2_ioctl_dqbuf, + .vidioc_create_bufs = vb2_ioctl_create_bufs, + .vidioc_expbuf = vb2_ioctl_expbuf, + .vidioc_streamon = vb2_ioctl_streamon, + .vidioc_streamoff = vb2_ioctl_streamoff, + .vidioc_subscribe_event = v4l2_ctrl_subscribe_event, + .vidioc_unsubscribe_event = v4l2_event_unsubscribe, +}; + +/* + * V4L2 file operations + */ +static const struct v4l2_file_operations tegra_channel_fops = { + .owner = THIS_MODULE, + .unlocked_ioctl = video_ioctl2, + .open = v4l2_fh_open, + .release = vb2_fop_release, + .read = vb2_fop_read, + .poll = vb2_fop_poll, + .mmap = vb2_fop_mmap, +}; + +/* + * V4L2 control operations + */ +static int vi_s_ctrl(struct v4l2_ctrl *ctrl) +{ + struct tegra_vi_channel *chan = container_of(ctrl->handler, + struct tegra_vi_channel, + ctrl_handler); + + switch (ctrl->id) { + case V4L2_CID_TEST_PATTERN: + /* pattern change takes effect on next stream */ + chan->pg_mode = ctrl->val + 1; + break; + default: + return -EINVAL; + } + + return 0; +} + +static const struct v4l2_ctrl_ops vi_ctrl_ops = { + .s_ctrl = vi_s_ctrl, +}; + +static const char *const vi_pattern_strings[] = { + "Black/White Direct Mode", + "Color Patch Mode", +}; + +static int tegra_channel_setup_ctrl_handler(struct tegra_vi_channel *chan) +{ + int ret; + + /* add test pattern control handler to v4l2 device */ + v4l2_ctrl_new_std_menu_items(&chan->ctrl_handler, &vi_ctrl_ops, + V4L2_CID_TEST_PATTERN, + ARRAY_SIZE(vi_pattern_strings) - 1, + 0, 0, vi_pattern_strings); + if (chan->ctrl_handler.error) { + dev_err(chan->vi->dev, "failed to add TPG ctrl handler: %d\n", + chan->ctrl_handler.error); + v4l2_ctrl_handler_free(&chan->ctrl_handler); + return chan->ctrl_handler.error; + } + + /* setup the controls */ + ret = v4l2_ctrl_handler_setup(&chan->ctrl_handler); + if (ret < 0) { + dev_err(chan->vi->dev, + "failed to setup v4l2 ctrl handler: %d\n", ret); + return ret; + } + + return 0; +} + +/* VI only support 2 formats in TPG mode */ +static void vi_tpg_fmts_bitmap_init(struct tegra_vi_channel *chan) +{ + int index; + + bitmap_zero(chan->tpg_fmts_bitmap, MAX_FORMAT_NUM); + + index = tegra_get_format_idx_by_code(chan->vi, + MEDIA_BUS_FMT_SRGGB10_1X10); + bitmap_set(chan->tpg_fmts_bitmap, index, 1); + + index = tegra_get_format_idx_by_code(chan->vi, + MEDIA_BUS_FMT_RGB888_1X32_PADHI); + bitmap_set(chan->tpg_fmts_bitmap, index, 1); +} + +static void tegra_channel_cleanup(struct tegra_vi_channel *chan) +{ + v4l2_ctrl_handler_free(&chan->ctrl_handler); + media_entity_cleanup(&chan->video.entity); + host1x_syncpt_free(chan->mw_ack_sp); + host1x_syncpt_free(chan->frame_start_sp); + mutex_destroy(&chan->video_lock); +} + +void tegra_channels_cleanup(struct tegra_vi *vi) +{ + struct tegra_vi_channel *chan, *tmp; + + if (!vi) + return; + + list_for_each_entry_safe(chan, tmp, &vi->vi_chans, list) { + tegra_channel_cleanup(chan); + list_del(&chan->list); + kfree(chan); + } +} + +static int tegra_channel_init(struct tegra_vi_channel *chan) +{ + struct tegra_vi *vi = chan->vi; + struct tegra_video_device *vid = dev_get_drvdata(vi->client.host); + unsigned long flags = HOST1X_SYNCPT_CLIENT_MANAGED; + int ret; + + mutex_init(&chan->video_lock); + INIT_LIST_HEAD(&chan->capture); + INIT_LIST_HEAD(&chan->done); + spin_lock_init(&chan->start_lock); + spin_lock_init(&chan->done_lock); + spin_lock_init(&chan->sp_incr_lock); + init_waitqueue_head(&chan->start_wait); + init_waitqueue_head(&chan->done_wait); + + /* initialize the video format */ + chan->fmtinfo = &tegra_default_format; + chan->format.pixelformat = chan->fmtinfo->fourcc; + chan->format.colorspace = V4L2_COLORSPACE_SRGB; + chan->format.field = V4L2_FIELD_NONE; + chan->format.width = TEGRA_DEF_WIDTH; + chan->format.height = TEGRA_DEF_HEIGHT; + chan->format.bytesperline = TEGRA_DEF_WIDTH * chan->fmtinfo->bpp; + chan->format.sizeimage = chan->format.bytesperline * TEGRA_DEF_HEIGHT; + tegra_channel_fmt_align(chan, &chan->format, chan->fmtinfo->bpp); + + chan->frame_start_sp = host1x_syncpt_request(&vi->client, flags); + if (!chan->frame_start_sp) { + dev_err(vi->dev, "failed to request frame start syncpoint\n"); + return -ENOMEM; + } + + chan->mw_ack_sp = host1x_syncpt_request(&vi->client, flags); + if (!chan->mw_ack_sp) { + dev_err(vi->dev, "failed to request memory ack syncpoint\n"); + ret = -ENOMEM; + goto free_fs_syncpt; + } + + /* initialize the media entity */ + chan->pad.flags = MEDIA_PAD_FL_SINK; + ret = media_entity_pads_init(&chan->video.entity, 1, &chan->pad); + if (ret < 0) { + dev_err(vi->dev, + "failed to initialize media entity: %d\n", ret); + goto free_mw_ack_syncpt; + } + + ret = v4l2_ctrl_handler_init(&chan->ctrl_handler, MAX_CID_CONTROLS); + if (chan->ctrl_handler.error) { + dev_err(vi->dev, + "failed to initialize v4l2 ctrl handler: %d\n", ret); + goto cleanup_media; + } + + /* initialize the video_device */ + chan->video.fops = &tegra_channel_fops; + chan->video.v4l2_dev = &vid->v4l2_dev; + chan->video.release = video_device_release_empty; + chan->video.queue = &chan->queue; + snprintf(chan->video.name, sizeof(chan->video.name), "%s-%s-%u", + dev_name(vi->dev), "output", chan->portno); + chan->video.vfl_type = VFL_TYPE_VIDEO; + chan->video.vfl_dir = VFL_DIR_RX; + chan->video.ioctl_ops = &tegra_channel_ioctl_ops; + chan->video.ctrl_handler = &chan->ctrl_handler; + chan->video.lock = &chan->video_lock; + chan->video.device_caps = V4L2_CAP_VIDEO_CAPTURE | + V4L2_CAP_STREAMING | + V4L2_CAP_READWRITE; + video_set_drvdata(&chan->video, chan); + + chan->queue.type = V4L2_BUF_TYPE_VIDEO_CAPTURE; + chan->queue.io_modes = VB2_MMAP | VB2_DMABUF | VB2_READ; + chan->queue.lock = &chan->video_lock; + chan->queue.drv_priv = chan; + chan->queue.buf_struct_size = sizeof(struct tegra_channel_buffer); + chan->queue.ops = &tegra_channel_queue_qops; + chan->queue.mem_ops = &vb2_dma_contig_memops; + chan->queue.timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC; + chan->queue.min_buffers_needed = 2; + chan->queue.dev = vi->dev; + ret = vb2_queue_init(&chan->queue); + if (ret < 0) { + dev_err(vi->dev, "failed to initialize vb2 queue: %d\n", ret); + goto free_v4l2_ctrl_hdl; + } + + return 0; + +free_v4l2_ctrl_hdl: + v4l2_ctrl_handler_free(&chan->ctrl_handler); +cleanup_media: + media_entity_cleanup(&chan->video.entity); +free_mw_ack_syncpt: + host1x_syncpt_free(chan->mw_ack_sp); +free_fs_syncpt: + host1x_syncpt_free(chan->frame_start_sp); + return ret; +} + +static int tegra_vi_tpg_channels_alloc(struct tegra_vi *vi) +{ + struct tegra_vi_channel *chan; + unsigned int port_num; + unsigned int nchannels = vi->soc->vi_max_channels; + int ret = 0; + + for (port_num = 0; port_num < nchannels; port_num++) { + /* + * Do not use devm_kzalloc as memory is freed immediately + * when device instance is unbound but application might still + * be holding the device node open. Channel memory allocated + * with kzalloc is freed during video device release callback. + */ + chan = kzalloc(sizeof(*chan), GFP_KERNEL); + if (!chan) { + ret = -ENOMEM; + return ret; + } + + chan->vi = vi; + chan->portno = port_num; + list_add_tail(&chan->list, &vi->vi_chans); + } + + return 0; +} + +static int tegra_vi_channels_init(struct tegra_vi *vi) +{ + struct tegra_vi_channel *chan; + int ret; + + list_for_each_entry(chan, &vi->vi_chans, list) { + ret = tegra_channel_init(chan); + if (ret < 0) { + dev_err(vi->dev, + "failed to initialize channel-%d: %d\n", + chan->portno, ret); + goto cleanup; + } + } + + return 0; + +cleanup: + list_for_each_entry_continue_reverse(chan, &vi->vi_chans, list) + tegra_channel_cleanup(chan); + + return ret; +} + +void tegra_v4l2_nodes_cleanup_tpg(struct tegra_video_device *vid) +{ + struct tegra_vi *vi = vid->vi; + struct tegra_csi *csi = vid->csi; + struct tegra_csi_channel *csi_chan; + struct tegra_vi_channel *chan; + + list_for_each_entry(chan, &vi->vi_chans, list) { + video_unregister_device(&chan->video); + mutex_lock(&chan->video_lock); + vb2_queue_release(&chan->queue); + mutex_unlock(&chan->video_lock); + } + + list_for_each_entry(csi_chan, &csi->csi_chans, list) + v4l2_device_unregister_subdev(&csi_chan->subdev); +} + +int tegra_v4l2_nodes_setup_tpg(struct tegra_video_device *vid) +{ + struct tegra_vi *vi = vid->vi; + struct tegra_csi *csi = vid->csi; + struct tegra_vi_channel *vi_chan; + struct tegra_csi_channel *csi_chan; + u32 link_flags = MEDIA_LNK_FL_ENABLED; + int ret = 0; + + if (!vi || !csi) + return -ENODEV; + + csi_chan = list_first_entry(&csi->csi_chans, + struct tegra_csi_channel, list); + + list_for_each_entry(vi_chan, &vi->vi_chans, list) { + struct media_entity *source = &csi_chan->subdev.entity; + struct media_entity *sink = &vi_chan->video.entity; + struct media_pad *source_pad = csi_chan->pads; + struct media_pad *sink_pad = &vi_chan->pad; + + ret = v4l2_device_register_subdev(&vid->v4l2_dev, + &csi_chan->subdev); + if (ret) { + dev_err(vi->dev, + "failed to register subdev: %d\n", ret); + goto cleanup; + } + + ret = video_register_device(&vi_chan->video, + VFL_TYPE_VIDEO, -1); + if (ret < 0) { + dev_err(vi->dev, + "failed to register video device: %d\n", ret); + goto cleanup; + } + + dev_dbg(vi->dev, "creating %s:%u -> %s:%u link\n", + source->name, source_pad->index, + sink->name, sink_pad->index); + + ret = media_create_pad_link(source, source_pad->index, + sink, sink_pad->index, + link_flags); + if (ret < 0) { + dev_err(vi->dev, + "failed to create %s:%u -> %s:%u link: %d\n", + source->name, source_pad->index, + sink->name, sink_pad->index, ret); + goto cleanup; + } + + ret = tegra_channel_setup_ctrl_handler(vi_chan); + if (ret < 0) + goto cleanup; + + v4l2_set_subdev_hostdata(&csi_chan->subdev, vi_chan); + vi_tpg_fmts_bitmap_init(vi_chan); + csi_chan = list_next_entry(csi_chan, list); + } + + return 0; + +cleanup: + tegra_v4l2_nodes_cleanup_tpg(vid); + return ret; +} + +static int __maybe_unused vi_runtime_resume(struct device *dev) +{ + struct tegra_vi *vi = dev_get_drvdata(dev); + int ret; + + ret = regulator_enable(vi->vdd); + if (ret) { + dev_err(dev, "failed to enable VDD supply: %d\n", ret); + return ret; + } + + ret = clk_set_rate(vi->clk, vi->soc->vi_max_clk_hz); + if (ret) { + dev_err(dev, "failed to set vi clock rate: %d\n", ret); + goto disable_vdd; + } + + ret = clk_prepare_enable(vi->clk); + if (ret) { + dev_err(dev, "failed to enable vi clock: %d\n", ret); + goto disable_vdd; + } + + return 0; + +disable_vdd: + regulator_disable(vi->vdd); + return ret; +} + +static int __maybe_unused vi_runtime_suspend(struct device *dev) +{ + struct tegra_vi *vi = dev_get_drvdata(dev); + + clk_disable_unprepare(vi->clk); + + regulator_disable(vi->vdd); + + return 0; +} + +static int tegra_vi_init(struct host1x_client *client) +{ + struct tegra_video_device *vid = dev_get_drvdata(client->host); + struct tegra_vi *vi = host1x_client_to_vi(client); + struct tegra_vi_channel *chan, *tmp; + int ret; + + vid->media_dev.hw_revision = vi->soc->hw_revision; + snprintf(vid->media_dev.bus_info, sizeof(vid->media_dev.bus_info), + "platform:%s", dev_name(vi->dev)); + + INIT_LIST_HEAD(&vi->vi_chans); + + ret = tegra_vi_tpg_channels_alloc(vi); + if (ret < 0) { + dev_err(vi->dev, "failed to allocate tpg channels: %d\n", ret); + goto free_chans; + } + + ret = tegra_vi_channels_init(vi); + if (ret < 0) + goto free_chans; + + vid->vi = vi; + + return 0; + +free_chans: + list_for_each_entry_safe(chan, tmp, &vi->vi_chans, list) { + list_del(&chan->list); + kfree(chan); + } + + return ret; +} + +static int tegra_vi_exit(struct host1x_client *client) +{ + /* + * Do not cleanup the channels here as application might still be + * holding video device nodes. Channels cleanup will happen during + * v4l2_device release callback which gets called after all video + * device nodes are released. + */ + + return 0; +} + +static const struct host1x_client_ops vi_client_ops = { + .init = tegra_vi_init, + .exit = tegra_vi_exit, +}; + +static int tegra_vi_probe(struct platform_device *pdev) +{ + struct tegra_vi *vi; + int ret; + + vi = devm_kzalloc(&pdev->dev, sizeof(*vi), GFP_KERNEL); + if (!vi) + return -ENOMEM; + + vi->iomem = devm_platform_ioremap_resource(pdev, 0); + if (IS_ERR(vi->iomem)) + return PTR_ERR(vi->iomem); + + vi->soc = of_device_get_match_data(&pdev->dev); + + vi->clk = devm_clk_get(&pdev->dev, NULL); + if (IS_ERR(vi->clk)) { + ret = PTR_ERR(vi->clk); + dev_err(&pdev->dev, "failed to get vi clock: %d\n", ret); + return ret; + } + + vi->vdd = devm_regulator_get(&pdev->dev, "avdd-dsi-csi"); + if (IS_ERR(vi->vdd)) { + ret = PTR_ERR(vi->vdd); + dev_err(&pdev->dev, "failed to get VDD supply: %d\n", ret); + return ret; + } + + if (!pdev->dev.pm_domain) { + ret = -ENOENT; + dev_warn(&pdev->dev, "PM domain is not attached: %d\n", ret); + return ret; + } + + ret = devm_of_platform_populate(&pdev->dev); + if (ret < 0) { + dev_err(&pdev->dev, + "failed to populate vi child device: %d\n", ret); + return ret; + } + + vi->dev = &pdev->dev; + vi->ops = vi->soc->ops; + platform_set_drvdata(pdev, vi); + pm_runtime_enable(&pdev->dev); + + /* initialize host1x interface */ + INIT_LIST_HEAD(&vi->client.list); + vi->client.ops = &vi_client_ops; + vi->client.dev = &pdev->dev; + + ret = host1x_client_register(&vi->client); + if (ret < 0) { + dev_err(&pdev->dev, + "failed to register host1x client: %d\n", ret); + goto rpm_disable; + } + + return 0; + +rpm_disable: + pm_runtime_disable(&pdev->dev); + return ret; +} + +static int tegra_vi_remove(struct platform_device *pdev) +{ + struct tegra_vi *vi = platform_get_drvdata(pdev); + int err; + + err = host1x_client_unregister(&vi->client); + if (err < 0) { + dev_err(&pdev->dev, + "failed to unregister host1x client: %d\n", err); + return err; + } + + pm_runtime_disable(&pdev->dev); + + return 0; +} + +static const struct of_device_id tegra_vi_of_id_table[] = { +#if defined(CONFIG_ARCH_TEGRA_210_SOC) + { .compatible = "nvidia,tegra210-vi", .data = &tegra210_vi_soc }, +#endif + { } +}; +MODULE_DEVICE_TABLE(of, tegra_vi_of_id_table); + +static const struct dev_pm_ops tegra_vi_pm_ops = { + SET_RUNTIME_PM_OPS(vi_runtime_suspend, vi_runtime_resume, NULL) +}; + +struct platform_driver tegra_vi_driver = { + .driver = { + .name = "tegra-vi", + .of_match_table = tegra_vi_of_id_table, + .pm = &tegra_vi_pm_ops, + }, + .probe = tegra_vi_probe, + .remove = tegra_vi_remove, +}; diff --git a/drivers/staging/media/tegra-video/vi.h b/drivers/staging/media/tegra-video/vi.h new file mode 100644 index 0000000..20059c9 --- /dev/null +++ b/drivers/staging/media/tegra-video/vi.h @@ -0,0 +1,256 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ +/* + * Copyright (C) 2020 NVIDIA CORPORATION. All rights reserved. + */ + +#ifndef __TEGRA_VI_H__ +#define __TEGRA_VI_H__ + +#include +#include + +#include +#include + +#include +#include +#include +#include +#include +#include + +#define TEGRA_MIN_WIDTH 32U +#define TEGRA_MAX_WIDTH 32768U +#define TEGRA_MIN_HEIGHT 32U +#define TEGRA_MAX_HEIGHT 32768U + +#define TEGRA_DEF_WIDTH 1920 +#define TEGRA_DEF_HEIGHT 1080 +#define TEGRA_IMAGE_FORMAT_DEF 32 + +#define MAX_FORMAT_NUM 64 + +enum tegra_vi_pg_mode { + TEGRA_VI_PG_DISABLED = 0, + TEGRA_VI_PG_DIRECT, + TEGRA_VI_PG_PATCH, +}; + +/** + * struct tegra_vi_ops - Tegra VI operations + * @vi_start_streaming: starts media pipeline, subdevice streaming, sets up + * VI for capture and runs capture start and capture finish + * kthreads for capturing frames to buffer and returns them back. + * @vi_stop_streaming: stops media pipeline and subdevice streaming and returns + * back any queued buffers. + */ +struct tegra_vi_ops { + int (*vi_start_streaming)(struct vb2_queue *vq, u32 count); + void (*vi_stop_streaming)(struct vb2_queue *vq); +}; + +/** + * struct tegra_vi_soc - NVIDIA Tegra Video Input SoC structure + * + * @video_formats: supported video formats + * @nformats: total video formats + * @ops: vi operations + * @hw_revision: VI hw_revision + * @vi_max_channels: supported max streaming channels + * @vi_max_clk_hz: VI clock max frequency + */ +struct tegra_vi_soc { + const struct tegra_video_format *video_formats; + const unsigned int nformats; + const struct tegra_vi_ops *ops; + u32 hw_revision; + unsigned int vi_max_channels; + unsigned int vi_max_clk_hz; +}; + +/** + * struct tegra_vi - NVIDIA Tegra Video Input device structure + * + * @dev: device struct + * @client: host1x_client struct + * @iomem: register base + * @clk: main clock for VI block + * @vdd: vdd regulator for VI hardware, normally it is avdd_dsi_csi + * @soc: pointer to SoC data structure + * @ops: vi operations + * @vi_chans: list head for VI channels + */ +struct tegra_vi { + struct device *dev; + struct host1x_client client; + void __iomem *iomem; + struct clk *clk; + struct regulator *vdd; + const struct tegra_vi_soc *soc; + const struct tegra_vi_ops *ops; + struct list_head vi_chans; +}; + +/** + * struct tegra_vi_channel - Tegra video channel + * + * @list: list head for this entry + * @video: V4L2 video device associated with the video channel + * @video_lock: protects the @format and @queue fields + * @pad: media pad for the video device entity + * + * @vi: Tegra video input device structure + * @frame_start_sp: host1x syncpoint pointer to synchronize programmed capture + * start condition with hardware frame start events through host1x + * syncpoint counters. + * @mw_ack_sp: host1x syncpoint pointer to synchronize programmed memory write + * ack trigger condition with hardware memory write done at end of + * frame through host1x syncpoint counters. + * @sp_incr_lock: protects cpu syncpoint increment. + * + * @kthread_start_capture: kthread to start capture of single frame when + * vb buffer is available. This thread programs VI CSI hardware + * for single frame capture and waits for frame start event from + * the hardware. On receiving frame start event, it wakes up + * kthread_finish_capture thread to wait for finishing frame data + * write to the memory. In case of missing frame start event, this + * thread returns buffer back to vb with VB2_BUF_STATE_ERROR. + * @start_wait: waitqueue for starting frame capture when buffer is available. + * @kthread_finish_capture: kthread to finish the buffer capture and return to. + * This thread is woken up by kthread_start_capture on receiving + * frame start event from the hardware and this thread waits for + * MW_ACK_DONE event which indicates completion of writing frame + * data to the memory. On receiving MW_ACK_DONE event, buffer is + * returned back to vb with VB2_BUF_STATE_DONE and in case of + * missing MW_ACK_DONE event, buffer is returned back to vb with + * VB2_BUF_STATE_ERROR. + * @done_wait: waitqueue for finishing capture data writes to memory. + * + * @format: active V4L2 pixel format + * @fmtinfo: format information corresponding to the active @format + * @queue: vb2 buffers queue + * @sequence: V4L2 buffers sequence number + * + * @capture: list of queued buffers for capture + * @start_lock: protects the capture queued list + * @done: list of capture done queued buffers + * @done_lock: protects the capture done queue list + * + * @portno: VI channel port number + * + * @ctrl_handler: V4L2 control handler of this video channel + * @tpg_fmts_bitmap: a bitmap for supported TPG formats + * @pg_mode: test pattern generator mode (disabled/direct/patch) + */ +struct tegra_vi_channel { + struct list_head list; + struct video_device video; + /* protects the @format and @queue fields */ + struct mutex video_lock; + struct media_pad pad; + + struct tegra_vi *vi; + struct host1x_syncpt *frame_start_sp; + struct host1x_syncpt *mw_ack_sp; + /* protects the cpu syncpoint increment */ + spinlock_t sp_incr_lock; + + struct task_struct *kthread_start_capture; + wait_queue_head_t start_wait; + struct task_struct *kthread_finish_capture; + wait_queue_head_t done_wait; + + struct v4l2_pix_format format; + const struct tegra_video_format *fmtinfo; + struct vb2_queue queue; + u32 sequence; + + struct list_head capture; + /* protects the capture queued list */ + spinlock_t start_lock; + struct list_head done; + /* protects the capture done queue list */ + spinlock_t done_lock; + + unsigned char portno; + + struct v4l2_ctrl_handler ctrl_handler; + DECLARE_BITMAP(tpg_fmts_bitmap, MAX_FORMAT_NUM); + enum tegra_vi_pg_mode pg_mode; +}; + +/** + * struct tegra_channel_buffer - video channel buffer + * + * @buf: vb2 buffer base object + * @queue: buffer list entry in the channel queued buffers list + * @chan: channel that uses the buffer + * @addr: Tegra IOVA buffer address for VI output + * @mw_ack_sp_thresh: MW_ACK_DONE syncpoint threshold corresponding + * to the capture buffer. + */ +struct tegra_channel_buffer { + struct vb2_v4l2_buffer buf; + struct list_head queue; + struct tegra_vi_channel *chan; + dma_addr_t addr; + u32 mw_ack_sp_thresh; +}; + +/* + * VI channel input data type enum. + * These data type enum value gets programmed into corresponding Tegra VI + * channel register bits. + */ +enum tegra_image_dt { + TEGRA_IMAGE_DT_YUV420_8 = 24, + TEGRA_IMAGE_DT_YUV420_10, + + TEGRA_IMAGE_DT_YUV420CSPS_8 = 28, + TEGRA_IMAGE_DT_YUV420CSPS_10, + TEGRA_IMAGE_DT_YUV422_8, + TEGRA_IMAGE_DT_YUV422_10, + TEGRA_IMAGE_DT_RGB444, + TEGRA_IMAGE_DT_RGB555, + TEGRA_IMAGE_DT_RGB565, + TEGRA_IMAGE_DT_RGB666, + TEGRA_IMAGE_DT_RGB888, + + TEGRA_IMAGE_DT_RAW6 = 40, + TEGRA_IMAGE_DT_RAW7, + TEGRA_IMAGE_DT_RAW8, + TEGRA_IMAGE_DT_RAW10, + TEGRA_IMAGE_DT_RAW12, + TEGRA_IMAGE_DT_RAW14, +}; + +/** + * struct tegra_video_format - Tegra video format description + * + * @img_dt: image data type + * @bit_width: format width in bits per component + * @code: media bus format code + * @bpp: bytes per pixel (when stored in memory) + * @img_fmt: image format + * @fourcc: V4L2 pixel format FCC identifier + */ +struct tegra_video_format { + enum tegra_image_dt img_dt; + unsigned int bit_width; + unsigned int code; + unsigned int bpp; + u32 img_fmt; + u32 fourcc; +}; + +#if defined(CONFIG_ARCH_TEGRA_210_SOC) +extern const struct tegra_vi_soc tegra210_vi_soc; +#endif + +struct v4l2_subdev * +tegra_channel_get_remote_subdev(struct tegra_vi_channel *chan); +int tegra_channel_set_stream(struct tegra_vi_channel *chan, bool on); +void tegra_channel_release_buffers(struct tegra_vi_channel *chan, + enum vb2_buffer_state state); +void tegra_channels_cleanup(struct tegra_vi *vi); +#endif diff --git a/drivers/staging/media/tegra-video/video.c b/drivers/staging/media/tegra-video/video.c new file mode 100644 index 0000000..30816aa --- /dev/null +++ b/drivers/staging/media/tegra-video/video.c @@ -0,0 +1,155 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * Copyright (C) 2020 NVIDIA CORPORATION. All rights reserved. + */ + +#include +#include +#include + +#include "video.h" + +static void tegra_v4l2_dev_release(struct v4l2_device *v4l2_dev) +{ + struct tegra_video_device *vid; + + vid = container_of(v4l2_dev, struct tegra_video_device, v4l2_dev); + + /* cleanup channels here as all video device nodes are released */ + tegra_channels_cleanup(vid->vi); + + v4l2_device_unregister(v4l2_dev); + media_device_unregister(&vid->media_dev); + media_device_cleanup(&vid->media_dev); + kfree(vid); +} + +static int host1x_video_probe(struct host1x_device *dev) +{ + struct tegra_video_device *vid; + int ret; + + vid = kzalloc(sizeof(*vid), GFP_KERNEL); + if (!vid) + return -ENOMEM; + + dev_set_drvdata(&dev->dev, vid); + + vid->media_dev.dev = &dev->dev; + strscpy(vid->media_dev.model, "NVIDIA Tegra Video Input Device", + sizeof(vid->media_dev.model)); + + media_device_init(&vid->media_dev); + ret = media_device_register(&vid->media_dev); + if (ret < 0) { + dev_err(&dev->dev, + "failed to register media device: %d\n", ret); + goto cleanup; + } + + vid->v4l2_dev.mdev = &vid->media_dev; + vid->v4l2_dev.release = tegra_v4l2_dev_release; + ret = v4l2_device_register(&dev->dev, &vid->v4l2_dev); + if (ret < 0) { + dev_err(&dev->dev, + "V4L2 device registration failed: %d\n", ret); + goto unregister_media; + } + + ret = host1x_device_init(dev); + if (ret < 0) + goto unregister_v4l2; + + /* + * Both vi and csi channels are available now. + * Register v4l2 nodes and create media links for TPG. + */ + ret = tegra_v4l2_nodes_setup_tpg(vid); + if (ret < 0) { + dev_err(&dev->dev, + "failed to setup tpg graph: %d\n", ret); + goto device_exit; + } + + return 0; + +device_exit: + host1x_device_exit(dev); + /* vi exit ops does not clean channels, so clean them here */ + tegra_channels_cleanup(vid->vi); +unregister_v4l2: + v4l2_device_unregister(&vid->v4l2_dev); +unregister_media: + media_device_unregister(&vid->media_dev); +cleanup: + media_device_cleanup(&vid->media_dev); + kfree(vid); + return ret; +} + +static int host1x_video_remove(struct host1x_device *dev) +{ + struct tegra_video_device *vid = dev_get_drvdata(&dev->dev); + + tegra_v4l2_nodes_cleanup_tpg(vid); + + host1x_device_exit(dev); + + /* This calls v4l2_dev release callback on last reference */ + v4l2_device_put(&vid->v4l2_dev); + + return 0; +} + +static const struct of_device_id host1x_video_subdevs[] = { +#if defined(CONFIG_ARCH_TEGRA_210_SOC) + { .compatible = "nvidia,tegra210-csi", }, + { .compatible = "nvidia,tegra210-vi", }, +#endif + { } +}; + +static struct host1x_driver host1x_video_driver = { + .driver = { + .name = "tegra-video", + }, + .probe = host1x_video_probe, + .remove = host1x_video_remove, + .subdevs = host1x_video_subdevs, +}; + +static struct platform_driver * const drivers[] = { + &tegra_csi_driver, + &tegra_vi_driver, +}; + +static int __init host1x_video_init(void) +{ + int err; + + err = host1x_driver_register(&host1x_video_driver); + if (err < 0) + return err; + + err = platform_register_drivers(drivers, ARRAY_SIZE(drivers)); + if (err < 0) + goto unregister_host1x; + + return 0; + +unregister_host1x: + host1x_driver_unregister(&host1x_video_driver); + return err; +} +module_init(host1x_video_init); + +static void __exit host1x_video_exit(void) +{ + platform_unregister_drivers(drivers, ARRAY_SIZE(drivers)); + host1x_driver_unregister(&host1x_video_driver); +} +module_exit(host1x_video_exit); + +MODULE_AUTHOR("Sowjanya Komatineni "); +MODULE_DESCRIPTION("NVIDIA Tegra Host1x Video driver"); +MODULE_LICENSE("GPL v2"); diff --git a/drivers/staging/media/tegra-video/video.h b/drivers/staging/media/tegra-video/video.h new file mode 100644 index 0000000..fadaf21 --- /dev/null +++ b/drivers/staging/media/tegra-video/video.h @@ -0,0 +1,29 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ +/* + * Copyright (C) 2020 NVIDIA CORPORATION. All rights reserved. + */ + +#ifndef __TEGRA_VIDEO_H__ +#define __TEGRA_VIDEO_H__ + +#include + +#include +#include + +#include "vi.h" +#include "csi.h" + +struct tegra_video_device { + struct v4l2_device v4l2_dev; + struct media_device media_dev; + struct tegra_vi *vi; + struct tegra_csi *csi; +}; + +int tegra_v4l2_nodes_setup_tpg(struct tegra_video_device *vid); +void tegra_v4l2_nodes_cleanup_tpg(struct tegra_video_device *vid); + +extern struct platform_driver tegra_vi_driver; +extern struct platform_driver tegra_csi_driver; +#endif