From patchwork Fri Mar 22 15:10:03 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: =?utf-8?q?Martin_T=C5=AFma?= X-Patchwork-Id: 13600187 Received: from mx.gpxsee.org (mx.gpxsee.org [37.205.14.76]) by smtp.subspace.kernel.org (Postfix) with ESMTP id E281346453; Fri, 22 Mar 2024 14:10:29 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=37.205.14.76 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1711116632; cv=none; b=W3jEIfhR1BVk1PclGx6hhXtAvW6WDMjLs9vJZfHJLmp17hNUg1ccjaw5IozRPh785ttNqBAO6u2xQpJv7st6jK9WuIJg5fTI3i6sbgYYi6hHBbtrRjHgQezTgWIO5q/yk2+sWK2Ux+GrsvZWbkGbdCKbDSxFOUMLH482xS+btY8= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1711116632; c=relaxed/simple; bh=z7uHi44jazTy+1QLYDTQDu8HlqDYjCoKrSPOoXI9JVk=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=S+CFIlfhNpdpqJY+wr0zLktHpdA1KN5MmJXx7a7WDChjc7xpKMAEvnm9gcyJAWgXQO+ZnNqla20pDLeKNZuLL1EJQV0QArDm8lMgs2uvYmtUUgeHgBZw1hLu1EmUK9SPVbFwhVrXXGytSf2BvHIGjXP61kaFRTrJZ+KgfVZaCRo= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=gpxsee.org; spf=pass smtp.mailfrom=gpxsee.org; arc=none smtp.client-ip=37.205.14.76 Authentication-Results: smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=gpxsee.org Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=gpxsee.org Received: from mgb4.. (unknown [62.77.71.229]) by mx.gpxsee.org (Postfix) with ESMTPSA id 5BB4A664E2; Fri, 22 Mar 2024 15:10:22 +0100 (CET) From: tumic@gpxsee.org To: Mauro Carvalho Chehab , Hans Verkuil Cc: linux-media@vger.kernel.org, linux-kernel@vger.kernel.org, =?utf-8?q?Mar?= =?utf-8?q?tin_T=C5=AFma?= Subject: [PATCH v4 1/3] media: mgb4: Add support for YUV image formats Date: Fri, 22 Mar 2024 16:10:03 +0100 Message-ID: <20240322151005.3499-2-tumic@gpxsee.org> X-Mailer: git-send-email 2.44.0 In-Reply-To: <20240322151005.3499-1-tumic@gpxsee.org> References: <20240322151005.3499-1-tumic@gpxsee.org> Precedence: bulk X-Mailing-List: linux-media@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 From: Martin Tůma Recent mgb4 firmwares support YUV in addition to the RGB image format. Enable YUV in the driver when the FW supports it. Signed-off-by: Martin Tůma --- drivers/media/pci/mgb4/mgb4_io.h | 7 ++ drivers/media/pci/mgb4/mgb4_vin.c | 116 ++++++++++++++++++++++++----- drivers/media/pci/mgb4/mgb4_vout.c | 116 ++++++++++++++++++++++++----- 3 files changed, 203 insertions(+), 36 deletions(-) diff --git a/drivers/media/pci/mgb4/mgb4_io.h b/drivers/media/pci/mgb4/mgb4_io.h index 8698db1be4a9..204613a6685c 100644 --- a/drivers/media/pci/mgb4/mgb4_io.h +++ b/drivers/media/pci/mgb4/mgb4_io.h @@ -30,4 +30,11 @@ static inline struct mgb4_frame_buffer *to_frame_buffer(struct vb2_v4l2_buffer * return container_of(vbuf, struct mgb4_frame_buffer, vb); } +static inline bool has_yuv(struct mgb4_regs *video) +{ + u32 status = mgb4_read_reg(video, 0xD0); + + return (status & (1U << 8)); +} + #endif diff --git a/drivers/media/pci/mgb4/mgb4_vin.c b/drivers/media/pci/mgb4/mgb4_vin.c index 2cd78c539889..19692e4dfb59 100644 --- a/drivers/media/pci/mgb4/mgb4_vin.c +++ b/drivers/media/pci/mgb4/mgb4_vin.c @@ -186,8 +186,11 @@ static int queue_setup(struct vb2_queue *q, unsigned int *nbuffers, struct device *alloc_devs[]) { struct mgb4_vin_dev *vindev = vb2_get_drv_priv(q); + struct mgb4_regs *video = &vindev->mgbdev->video; + u32 config = mgb4_read_reg(video, vindev->config->regs.config); + u32 pixelsize = (config & (1U << 16)) ? 2 : 4; unsigned int size = (vindev->timings.bt.width + vindev->padding) - * vindev->timings.bt.height * 4; + * vindev->timings.bt.height * pixelsize; /* * If I/O reconfiguration is in process, do not allow to start @@ -220,9 +223,12 @@ static int buffer_init(struct vb2_buffer *vb) static int buffer_prepare(struct vb2_buffer *vb) { struct mgb4_vin_dev *vindev = vb2_get_drv_priv(vb->vb2_queue); + struct mgb4_regs *video = &vindev->mgbdev->video; struct device *dev = &vindev->mgbdev->pdev->dev; + u32 config = mgb4_read_reg(video, vindev->config->regs.config); + u32 pixelsize = (config & (1U << 16)) ? 2 : 4; unsigned int size = (vindev->timings.bt.width + vindev->padding) - * vindev->timings.bt.height * 4; + * vindev->timings.bt.height * pixelsize; if (vb2_plane_size(vb, 0) < size) { dev_err(dev, "buffer too small (%lu < %u)\n", @@ -359,22 +365,33 @@ static int vidioc_querycap(struct file *file, void *priv, static int vidioc_enum_fmt(struct file *file, void *priv, struct v4l2_fmtdesc *f) { - if (f->index != 0) - return -EINVAL; + struct mgb4_vin_dev *vindev = video_drvdata(file); + struct mgb4_regs *video = &vindev->mgbdev->video; - f->pixelformat = V4L2_PIX_FMT_ABGR32; + if (f->type != V4L2_BUF_TYPE_VIDEO_CAPTURE) + return -EINVAL; - return 0; + if (f->index == 0) { + f->pixelformat = V4L2_PIX_FMT_ABGR32; + return 0; + } else if (f->index == 1 && has_yuv(video)) { + f->pixelformat = V4L2_PIX_FMT_YUYV; + return 0; + } else { + return -EINVAL; + } } static int vidioc_enum_frameintervals(struct file *file, void *priv, struct v4l2_frmivalenum *ival) { struct mgb4_vin_dev *vindev = video_drvdata(file); + struct mgb4_regs *video = &vindev->mgbdev->video; if (ival->index != 0) return -EINVAL; - if (ival->pixel_format != V4L2_PIX_FMT_ABGR32) + if (!(ival->pixel_format == V4L2_PIX_FMT_ABGR32 || + ((has_yuv(video) && ival->pixel_format == V4L2_PIX_FMT_YUYV)))) return -EINVAL; if (ival->width != vindev->timings.bt.width || ival->height != vindev->timings.bt.height) @@ -393,13 +410,32 @@ static int vidioc_enum_frameintervals(struct file *file, void *priv, static int vidioc_g_fmt(struct file *file, void *priv, struct v4l2_format *f) { struct mgb4_vin_dev *vindev = video_drvdata(file); + struct mgb4_regs *video = &vindev->mgbdev->video; + u32 config = mgb4_read_reg(video, vindev->config->regs.config); + + if (f->type != V4L2_BUF_TYPE_VIDEO_CAPTURE) + return -EINVAL; - f->fmt.pix.pixelformat = V4L2_PIX_FMT_ABGR32; f->fmt.pix.width = vindev->timings.bt.width; f->fmt.pix.height = vindev->timings.bt.height; f->fmt.pix.field = V4L2_FIELD_NONE; - f->fmt.pix.colorspace = V4L2_COLORSPACE_RAW; - f->fmt.pix.bytesperline = (f->fmt.pix.width + vindev->padding) * 4; + + if (config & (1U << 16)) { + f->fmt.pix.pixelformat = V4L2_PIX_FMT_YUYV; + if (config & (1U << 20)) { + f->fmt.pix.colorspace = V4L2_COLORSPACE_REC709; + } else { + if (config & (1U << 19)) + f->fmt.pix.colorspace = V4L2_COLORSPACE_SMPTE170M; + else + f->fmt.pix.colorspace = V4L2_COLORSPACE_SRGB; + } + f->fmt.pix.bytesperline = (f->fmt.pix.width + vindev->padding) * 2; + } else { + f->fmt.pix.pixelformat = V4L2_PIX_FMT_ABGR32; + f->fmt.pix.colorspace = V4L2_COLORSPACE_RAW; + f->fmt.pix.bytesperline = (f->fmt.pix.width + vindev->padding) * 4; + } f->fmt.pix.sizeimage = f->fmt.pix.bytesperline * f->fmt.pix.height; return 0; @@ -408,14 +444,33 @@ static int vidioc_g_fmt(struct file *file, void *priv, struct v4l2_format *f) static int vidioc_try_fmt(struct file *file, void *priv, struct v4l2_format *f) { struct mgb4_vin_dev *vindev = video_drvdata(file); + struct mgb4_regs *video = &vindev->mgbdev->video; + u32 pixelsize; + + if (f->type != V4L2_BUF_TYPE_VIDEO_CAPTURE) + return -EINVAL; - f->fmt.pix.pixelformat = V4L2_PIX_FMT_ABGR32; f->fmt.pix.width = vindev->timings.bt.width; f->fmt.pix.height = vindev->timings.bt.height; f->fmt.pix.field = V4L2_FIELD_NONE; - f->fmt.pix.colorspace = V4L2_COLORSPACE_RAW; - f->fmt.pix.bytesperline = max(f->fmt.pix.width * 4, - ALIGN_DOWN(f->fmt.pix.bytesperline, 4)); + + if (has_yuv(video) && f->fmt.pix.pixelformat == V4L2_PIX_FMT_YUYV) { + pixelsize = 2; + if (!(f->fmt.pix.colorspace == V4L2_COLORSPACE_REC709 || + f->fmt.pix.colorspace == V4L2_COLORSPACE_SMPTE170M)) + f->fmt.pix.colorspace = V4L2_COLORSPACE_SRGB; + } else { + pixelsize = 4; + f->fmt.pix.pixelformat = V4L2_PIX_FMT_ABGR32; + f->fmt.pix.colorspace = V4L2_COLORSPACE_RAW; + } + + if (f->fmt.pix.bytesperline > f->fmt.pix.width * pixelsize + && f->fmt.pix.bytesperline < f->fmt.pix.width * pixelsize * 2) + f->fmt.pix.bytesperline = ALIGN(f->fmt.pix.bytesperline, + pixelsize); + else + f->fmt.pix.bytesperline = f->fmt.pix.width * pixelsize; f->fmt.pix.sizeimage = f->fmt.pix.bytesperline * f->fmt.pix.height; return 0; @@ -425,13 +480,39 @@ static int vidioc_s_fmt(struct file *file, void *priv, struct v4l2_format *f) { struct mgb4_vin_dev *vindev = video_drvdata(file); struct mgb4_regs *video = &vindev->mgbdev->video; + u32 config, pixelsize; + int ret; if (vb2_is_busy(&vindev->queue)) return -EBUSY; - vidioc_try_fmt(file, priv, f); + ret = vidioc_try_fmt(file, priv, f); + if (ret < 0) + return ret; + + config = mgb4_read_reg(video, vindev->config->regs.config); + if (f->fmt.pix.pixelformat == V4L2_PIX_FMT_YUYV) { + pixelsize = 2; + config |= 1U << 16; + + if (f->fmt.pix.colorspace == V4L2_COLORSPACE_REC709) { + config |= 1U << 20; + config |= 1U << 19; + } else if (f->fmt.pix.colorspace == V4L2_COLORSPACE_SMPTE170M) { + config &= ~(1U << 20); + config |= 1U << 19; + } else { + config &= ~(1U << 20); + config &= ~(1U << 19); + } + } else { + pixelsize = 4; + config &= ~(1U << 16); + } + mgb4_write_reg(video, vindev->config->regs.config, config); - vindev->padding = (f->fmt.pix.bytesperline - (f->fmt.pix.width * 4)) / 4; + vindev->padding = (f->fmt.pix.bytesperline - (f->fmt.pix.width + * pixelsize)) / pixelsize; mgb4_write_reg(video, vindev->config->regs.padding, vindev->padding); set_loopback_padding(vindev, vindev->padding); @@ -467,7 +548,8 @@ static int vidioc_enum_framesizes(struct file *file, void *fh, { struct mgb4_vin_dev *vindev = video_drvdata(file); - if (fsize->index != 0 || fsize->pixel_format != V4L2_PIX_FMT_ABGR32) + if (fsize->index != 0 || !(fsize->pixel_format == V4L2_PIX_FMT_ABGR32 || + fsize->pixel_format == V4L2_PIX_FMT_YUYV)) return -EINVAL; fsize->discrete.width = vindev->timings.bt.width; diff --git a/drivers/media/pci/mgb4/mgb4_vout.c b/drivers/media/pci/mgb4/mgb4_vout.c index 241353ee77a5..243fbeaaceb9 100644 --- a/drivers/media/pci/mgb4/mgb4_vout.c +++ b/drivers/media/pci/mgb4/mgb4_vout.c @@ -59,7 +59,11 @@ static int queue_setup(struct vb2_queue *q, unsigned int *nbuffers, struct device *alloc_devs[]) { struct mgb4_vout_dev *voutdev = vb2_get_drv_priv(q); - unsigned int size; + struct mgb4_regs *video = &voutdev->mgbdev->video; + u32 config = mgb4_read_reg(video, voutdev->config->regs.config); + u32 pixelsize = (config & (1U << 16)) ? 2 : 4; + unsigned int size = (voutdev->width + voutdev->padding) * voutdev->height + * pixelsize; /* * If I/O reconfiguration is in process, do not allow to start @@ -69,8 +73,6 @@ static int queue_setup(struct vb2_queue *q, unsigned int *nbuffers, if (test_bit(0, &voutdev->mgbdev->io_reconfig)) return -EBUSY; - size = (voutdev->width + voutdev->padding) * voutdev->height * 4; - if (*nplanes) return sizes[0] < size ? -EINVAL : 0; *nplanes = 1; @@ -93,9 +95,11 @@ static int buffer_prepare(struct vb2_buffer *vb) { struct mgb4_vout_dev *voutdev = vb2_get_drv_priv(vb->vb2_queue); struct device *dev = &voutdev->mgbdev->pdev->dev; - unsigned int size; - - size = (voutdev->width + voutdev->padding) * voutdev->height * 4; + struct mgb4_regs *video = &voutdev->mgbdev->video; + u32 config = mgb4_read_reg(video, voutdev->config->regs.config); + u32 pixelsize = (config & (1U << 16)) ? 2 : 4; + unsigned int size = (voutdev->width + voutdev->padding) * voutdev->height + * pixelsize; if (vb2_plane_size(vb, 0) < size) { dev_err(dev, "buffer too small (%lu < %u)\n", @@ -194,24 +198,53 @@ static int vidioc_querycap(struct file *file, void *priv, static int vidioc_enum_fmt(struct file *file, void *priv, struct v4l2_fmtdesc *f) { - if (f->index != 0) - return -EINVAL; + struct mgb4_vin_dev *voutdev = video_drvdata(file); + struct mgb4_regs *video = &voutdev->mgbdev->video; - f->pixelformat = V4L2_PIX_FMT_ABGR32; + if (f->type != V4L2_BUF_TYPE_VIDEO_OUTPUT) + return -EINVAL; - return 0; + if (f->index == 0) { + f->pixelformat = V4L2_PIX_FMT_ABGR32; + return 0; + } else if (f->index == 1 && has_yuv(video)) { + f->pixelformat = V4L2_PIX_FMT_YUYV; + return 0; + } else { + return -EINVAL; + } } static int vidioc_g_fmt(struct file *file, void *priv, struct v4l2_format *f) { struct mgb4_vout_dev *voutdev = video_drvdata(file); + struct mgb4_regs *video = &voutdev->mgbdev->video; + u32 config = mgb4_read_reg(video, voutdev->config->regs.config); + + if (f->type != V4L2_BUF_TYPE_VIDEO_OUTPUT) + return -EINVAL; - f->fmt.pix.pixelformat = V4L2_PIX_FMT_ABGR32; f->fmt.pix.width = voutdev->width; f->fmt.pix.height = voutdev->height; f->fmt.pix.field = V4L2_FIELD_NONE; - f->fmt.pix.colorspace = V4L2_COLORSPACE_RAW; - f->fmt.pix.bytesperline = (f->fmt.pix.width + voutdev->padding) * 4; + + if (config & (1U << 16)) { + f->fmt.pix.pixelformat = V4L2_PIX_FMT_YUYV; + if (config & (1U << 20)) { + f->fmt.pix.colorspace = V4L2_COLORSPACE_REC709; + } else { + if (config & (1U << 19)) + f->fmt.pix.colorspace = V4L2_COLORSPACE_SMPTE170M; + else + f->fmt.pix.colorspace = V4L2_COLORSPACE_SRGB; + } + f->fmt.pix.bytesperline = (f->fmt.pix.width + voutdev->padding) * 2; + } else { + f->fmt.pix.pixelformat = V4L2_PIX_FMT_ABGR32; + f->fmt.pix.colorspace = V4L2_COLORSPACE_RAW; + f->fmt.pix.bytesperline = (f->fmt.pix.width + voutdev->padding) * 4; + } + f->fmt.pix.sizeimage = f->fmt.pix.bytesperline * f->fmt.pix.height; return 0; @@ -220,14 +253,33 @@ static int vidioc_g_fmt(struct file *file, void *priv, struct v4l2_format *f) static int vidioc_try_fmt(struct file *file, void *priv, struct v4l2_format *f) { struct mgb4_vout_dev *voutdev = video_drvdata(file); + struct mgb4_regs *video = &voutdev->mgbdev->video; + u32 pixelsize; + + if (f->type != V4L2_BUF_TYPE_VIDEO_OUTPUT) + return -EINVAL; - f->fmt.pix.pixelformat = V4L2_PIX_FMT_ABGR32; f->fmt.pix.width = voutdev->width; f->fmt.pix.height = voutdev->height; f->fmt.pix.field = V4L2_FIELD_NONE; - f->fmt.pix.colorspace = V4L2_COLORSPACE_RAW; - f->fmt.pix.bytesperline = max(f->fmt.pix.width * 4, - ALIGN_DOWN(f->fmt.pix.bytesperline, 4)); + + if (has_yuv(video) && f->fmt.pix.pixelformat == V4L2_PIX_FMT_YUYV) { + pixelsize = 2; + if (!(f->fmt.pix.colorspace == V4L2_COLORSPACE_REC709 || + f->fmt.pix.colorspace == V4L2_COLORSPACE_SMPTE170M)) + f->fmt.pix.colorspace = V4L2_COLORSPACE_SRGB; + } else { + pixelsize = 4; + f->fmt.pix.pixelformat = V4L2_PIX_FMT_ABGR32; + f->fmt.pix.colorspace = V4L2_COLORSPACE_RAW; + } + + if (f->fmt.pix.bytesperline > f->fmt.pix.width * pixelsize + && f->fmt.pix.bytesperline < f->fmt.pix.width * pixelsize * 2) + f->fmt.pix.bytesperline = ALIGN(f->fmt.pix.bytesperline, + pixelsize); + else + f->fmt.pix.bytesperline = f->fmt.pix.width * pixelsize; f->fmt.pix.sizeimage = f->fmt.pix.bytesperline * f->fmt.pix.height; return 0; @@ -237,13 +289,39 @@ static int vidioc_s_fmt(struct file *file, void *priv, struct v4l2_format *f) { struct mgb4_vout_dev *voutdev = video_drvdata(file); struct mgb4_regs *video = &voutdev->mgbdev->video; + u32 config, pixelsize; + int ret; if (vb2_is_busy(&voutdev->queue)) return -EBUSY; - vidioc_try_fmt(file, priv, f); + ret = vidioc_try_fmt(file, priv, f); + if (ret < 0) + return ret; + + config = mgb4_read_reg(video, voutdev->config->regs.config); + if (f->fmt.pix.pixelformat == V4L2_PIX_FMT_YUYV) { + pixelsize = 2; + config |= 1U << 16; + + if (f->fmt.pix.colorspace == V4L2_COLORSPACE_REC709) { + config |= 1U << 20; + config |= 1U << 19; + } else if (f->fmt.pix.colorspace == V4L2_COLORSPACE_SMPTE170M) { + config &= ~(1U << 20); + config |= 1U << 19; + } else { + config &= ~(1U << 20); + config &= ~(1U << 19); + } + } else { + pixelsize = 4; + config &= ~(1U << 16); + } + mgb4_write_reg(video, voutdev->config->regs.config, config); - voutdev->padding = (f->fmt.pix.bytesperline - (f->fmt.pix.width * 4)) / 4; + voutdev->padding = (f->fmt.pix.bytesperline - (f->fmt.pix.width + * pixelsize)) / pixelsize; mgb4_write_reg(video, voutdev->config->regs.padding, voutdev->padding); return 0; From patchwork Fri Mar 22 15:10:04 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: =?utf-8?q?Martin_T=C5=AFma?= X-Patchwork-Id: 13600189 Received: from mx.gpxsee.org (mx.gpxsee.org [37.205.14.76]) by smtp.subspace.kernel.org (Postfix) with ESMTP id E285346542; 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(unknown [62.77.71.229]) by mx.gpxsee.org (Postfix) with ESMTPSA id 742EE664E3; Fri, 22 Mar 2024 15:10:22 +0100 (CET) From: tumic@gpxsee.org To: Mauro Carvalho Chehab , Hans Verkuil Cc: linux-media@vger.kernel.org, linux-kernel@vger.kernel.org, =?utf-8?q?Mar?= =?utf-8?q?tin_T=C5=AFma?= Subject: [PATCH v4 2/3] media: mgb4: Add support for V4L2_CAP_TIMEPERFRAME Date: Fri, 22 Mar 2024 16:10:04 +0100 Message-ID: <20240322151005.3499-3-tumic@gpxsee.org> X-Mailer: git-send-email 2.44.0 In-Reply-To: <20240322151005.3499-1-tumic@gpxsee.org> References: <20240322151005.3499-1-tumic@gpxsee.org> Precedence: bulk X-Mailing-List: linux-media@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 From: Martin Tůma Recent mgb4 firmwares have support for setting a variable framerate independent of the signal framerate. Add/fix (the mgb4 driver already did promote V4L2_CAP_TIMEPERFRAME, but it didn't work) support for V4L2_CAP_TIMEPERFRAME to the driver to enable this feature. Signed-off-by: Martin Tůma --- drivers/media/pci/mgb4/mgb4_core.c | 2 +- drivers/media/pci/mgb4/mgb4_core.h | 2 + drivers/media/pci/mgb4/mgb4_io.h | 24 ++- drivers/media/pci/mgb4/mgb4_sysfs_out.c | 4 +- drivers/media/pci/mgb4/mgb4_vin.c | 89 ++++++++--- drivers/media/pci/mgb4/mgb4_vin.h | 3 +- drivers/media/pci/mgb4/mgb4_vout.c | 196 +++++++++++++++++++++++- drivers/media/pci/mgb4/mgb4_vout.h | 3 +- 8 files changed, 287 insertions(+), 36 deletions(-) diff --git a/drivers/media/pci/mgb4/mgb4_core.c b/drivers/media/pci/mgb4/mgb4_core.c index 5bfb8a06202e..9c6294009069 100644 --- a/drivers/media/pci/mgb4/mgb4_core.c +++ b/drivers/media/pci/mgb4/mgb4_core.c @@ -302,7 +302,7 @@ static int init_i2c(struct mgb4_dev *mgbdev) /* create dummy clock required by the xiic-i2c adapter */ snprintf(clk_name, sizeof(clk_name), "xiic-i2c.%d", id); mgbdev->i2c_clk = clk_hw_register_fixed_rate(NULL, clk_name, NULL, - 0, 125000000); + 0, MGB4_HW_FREQ); if (IS_ERR(mgbdev->i2c_clk)) { dev_err(dev, "failed to register I2C clock\n"); return PTR_ERR(mgbdev->i2c_clk); diff --git a/drivers/media/pci/mgb4/mgb4_core.h b/drivers/media/pci/mgb4/mgb4_core.h index 2a946e46aec1..b52cd67270b5 100644 --- a/drivers/media/pci/mgb4/mgb4_core.h +++ b/drivers/media/pci/mgb4/mgb4_core.h @@ -13,6 +13,8 @@ #include #include "mgb4_regs.h" +#define MGB4_HW_FREQ 125000000 + #define MGB4_VIN_DEVICES 2 #define MGB4_VOUT_DEVICES 2 diff --git a/drivers/media/pci/mgb4/mgb4_io.h b/drivers/media/pci/mgb4/mgb4_io.h index 204613a6685c..dd8696d7df31 100644 --- a/drivers/media/pci/mgb4/mgb4_io.h +++ b/drivers/media/pci/mgb4/mgb4_io.h @@ -7,11 +7,9 @@ #ifndef __MGB4_IO_H__ #define __MGB4_IO_H__ +#include #include - -#define MGB4_DEFAULT_WIDTH 1280 -#define MGB4_DEFAULT_HEIGHT 640 -#define MGB4_DEFAULT_PERIOD (125000000 / 60) +#include "mgb4_core.h" /* Register access error indication */ #define MGB4_ERR_NO_REG 0xFFFFFFFE @@ -20,6 +18,9 @@ #define MGB4_ERR_QUEUE_EMPTY 0xFFFFFFFC #define MGB4_ERR_QUEUE_FULL 0xFFFFFFFB +#define MGB4_PERIOD(numerator, denominator) \ + ((u32)div_u64((MGB4_HW_FREQ * (u64)(numerator)), (denominator))) + struct mgb4_frame_buffer { struct vb2_v4l2_buffer vb; struct list_head list; @@ -30,11 +31,24 @@ static inline struct mgb4_frame_buffer *to_frame_buffer(struct vb2_v4l2_buffer * return container_of(vbuf, struct mgb4_frame_buffer, vb); } -static inline bool has_yuv(struct mgb4_regs *video) +static inline bool has_yuv_and_timeperframe(struct mgb4_regs *video) { u32 status = mgb4_read_reg(video, 0xD0); return (status & (1U << 8)); } +#define has_yuv(video) has_yuv_and_timeperframe(video) +#define has_timeperframe(video) has_yuv_and_timeperframe(video) + +static inline u32 pixel_size(struct v4l2_dv_timings *timings) +{ + struct v4l2_bt_timings *bt = &timings->bt; + + u32 height = bt->height + bt->vfrontporch + bt->vsync + bt->vbackporch; + u32 width = bt->width + bt->hfrontporch + bt->hsync + bt->hbackporch; + + return width * height; +} + #endif diff --git a/drivers/media/pci/mgb4/mgb4_sysfs_out.c b/drivers/media/pci/mgb4/mgb4_sysfs_out.c index 9f6e81c57726..f67ff2a48329 100644 --- a/drivers/media/pci/mgb4/mgb4_sysfs_out.c +++ b/drivers/media/pci/mgb4/mgb4_sysfs_out.c @@ -231,7 +231,7 @@ static ssize_t frame_rate_show(struct device *dev, u32 period = mgb4_read_reg(&voutdev->mgbdev->video, voutdev->config->regs.frame_period); - return sprintf(buf, "%u\n", 125000000 / period); + return sprintf(buf, "%u\n", MGB4_HW_FREQ / period); } /* @@ -252,7 +252,7 @@ static ssize_t frame_rate_store(struct device *dev, return ret; mgb4_write_reg(&voutdev->mgbdev->video, - voutdev->config->regs.frame_period, 125000000 / val); + voutdev->config->regs.frame_period, MGB4_HW_FREQ / val); return count; } diff --git a/drivers/media/pci/mgb4/mgb4_vin.c b/drivers/media/pci/mgb4/mgb4_vin.c index 19692e4dfb59..560c94d21924 100644 --- a/drivers/media/pci/mgb4/mgb4_vin.c +++ b/drivers/media/pci/mgb4/mgb4_vin.c @@ -34,8 +34,8 @@ ATTRIBUTE_GROUPS(mgb4_fpdl3_in); ATTRIBUTE_GROUPS(mgb4_gmsl_in); static const struct mgb4_vin_config vin_cfg[] = { - {0, 0, 0, 6, {0x10, 0x00, 0x04, 0x08, 0x1C, 0x14, 0x18, 0x20, 0x24, 0x28}}, - {1, 1, 1, 7, {0x40, 0x30, 0x34, 0x38, 0x4C, 0x44, 0x48, 0x50, 0x54, 0x58}} + {0, 0, 0, 6, {0x10, 0x00, 0x04, 0x08, 0x1C, 0x14, 0x18, 0x20, 0x24, 0x28, 0xE8}}, + {1, 1, 1, 7, {0x40, 0x30, 0x34, 0x38, 0x4C, 0x44, 0x48, 0x50, 0x54, 0x58, 0xEC}} }; static const struct i2c_board_info fpdl3_deser_info[] = { @@ -387,6 +387,7 @@ static int vidioc_enum_frameintervals(struct file *file, void *priv, { struct mgb4_vin_dev *vindev = video_drvdata(file); struct mgb4_regs *video = &vindev->mgbdev->video; + struct v4l2_dv_timings timings; if (ival->index != 0) return -EINVAL; @@ -397,12 +398,15 @@ static int vidioc_enum_frameintervals(struct file *file, void *priv, ival->height != vindev->timings.bt.height) return -EINVAL; - ival->type = V4L2_FRMIVAL_TYPE_CONTINUOUS; - ival->stepwise.min.denominator = 60; - ival->stepwise.min.numerator = 1; - ival->stepwise.max.denominator = 1; - ival->stepwise.max.numerator = 1; - ival->stepwise.step = ival->stepwise.max; + get_timings(vindev, &timings); + + ival->type = V4L2_FRMIVAL_TYPE_STEPWISE; + ival->stepwise.max.denominator = MGB4_HW_FREQ; + ival->stepwise.max.numerator = 0xFFFFFFFF; + ival->stepwise.min.denominator = timings.bt.pixelclock; + ival->stepwise.min.numerator = pixel_size(&timings); + ival->stepwise.step.denominator = MGB4_HW_FREQ; + ival->stepwise.step.numerator = 1; return 0; } @@ -570,27 +574,66 @@ static int vidioc_g_input(struct file *file, void *priv, unsigned int *i) return 0; } -static int vidioc_parm(struct file *file, void *priv, - struct v4l2_streamparm *parm) +static int vidioc_g_parm(struct file *file, void *priv, + struct v4l2_streamparm *parm) { struct mgb4_vin_dev *vindev = video_drvdata(file); struct mgb4_regs *video = &vindev->mgbdev->video; - const struct mgb4_vin_regs *regs = &vindev->config->regs; - struct v4l2_fract timeperframe = { - .numerator = mgb4_read_reg(video, regs->frame_period), - .denominator = 125000000, - }; + struct v4l2_fract *tpf = &parm->parm.output.timeperframe; + struct v4l2_dv_timings timings; + u32 timer; if (parm->type != V4L2_BUF_TYPE_VIDEO_CAPTURE) return -EINVAL; parm->parm.capture.readbuffers = 2; - parm->parm.capture.capability = V4L2_CAP_TIMEPERFRAME; - parm->parm.capture.timeperframe = timeperframe; + + if (has_timeperframe(video)) { + timer = mgb4_read_reg(video, vindev->config->regs.timer); + if (timer < 0xFFFF) { + get_timings(vindev, &timings); + tpf->numerator = pixel_size(&timings); + tpf->denominator = timings.bt.pixelclock; + } else { + tpf->numerator = timer; + tpf->denominator = MGB4_HW_FREQ; + } + + parm->parm.output.capability = V4L2_CAP_TIMEPERFRAME; + } return 0; } +static int vidioc_s_parm(struct file *file, void *priv, + struct v4l2_streamparm *parm) +{ + struct mgb4_vin_dev *vindev = video_drvdata(file); + struct mgb4_regs *video = &vindev->mgbdev->video; + struct v4l2_fract *tpf = &parm->parm.output.timeperframe; + struct v4l2_dv_timings timings; + u32 period, timer; + + if (parm->type != V4L2_BUF_TYPE_VIDEO_CAPTURE) + return -EINVAL; + + if (has_timeperframe(video)) { + timer = tpf->denominator ? + MGB4_PERIOD(tpf->numerator, tpf->denominator) : 0; + if (timer) { + get_timings(vindev, &timings); + period = MGB4_PERIOD(pixel_size(&timings), + timings.bt.pixelclock); + if (timer < period) + timer = 0; + } + + mgb4_write_reg(video, vindev->config->regs.timer, timer); + } + + return vidioc_g_parm(file, priv, parm); +} + static int vidioc_s_dv_timings(struct file *file, void *fh, struct v4l2_dv_timings *timings) { @@ -674,8 +717,8 @@ static const struct v4l2_ioctl_ops video_ioctl_ops = { .vidioc_expbuf = vb2_ioctl_expbuf, .vidioc_streamon = vb2_ioctl_streamon, .vidioc_streamoff = vb2_ioctl_streamoff, - .vidioc_g_parm = vidioc_parm, - .vidioc_s_parm = vidioc_parm, + .vidioc_g_parm = vidioc_g_parm, + .vidioc_s_parm = vidioc_s_parm, .vidioc_dv_timings_cap = vidioc_dv_timings_cap, .vidioc_enum_dv_timings = vidioc_enum_dv_timings, .vidioc_g_dv_timings = vidioc_g_dv_timings, @@ -858,10 +901,16 @@ static void debugfs_init(struct mgb4_vin_dev *vindev) vindev->regs[7].offset = vindev->config->regs.signal2; vindev->regs[8].name = "PADDING_PIXELS"; vindev->regs[8].offset = vindev->config->regs.padding; + if (has_timeperframe(video)) { + vindev->regs[9].name = "TIMER"; + vindev->regs[9].offset = vindev->config->regs.timer; + vindev->regset.nregs = 10; + } else { + vindev->regset.nregs = 9; + } vindev->regset.base = video->membase; vindev->regset.regs = vindev->regs; - vindev->regset.nregs = ARRAY_SIZE(vindev->regs); debugfs_create_regset32("registers", 0444, vindev->debugfs, &vindev->regset); diff --git a/drivers/media/pci/mgb4/mgb4_vin.h b/drivers/media/pci/mgb4/mgb4_vin.h index 0249b400ad4d..9693bd0ce180 100644 --- a/drivers/media/pci/mgb4/mgb4_vin.h +++ b/drivers/media/pci/mgb4/mgb4_vin.h @@ -25,6 +25,7 @@ struct mgb4_vin_regs { u32 signal; u32 signal2; u32 padding; + u32 timer; }; struct mgb4_vin_config { @@ -59,7 +60,7 @@ struct mgb4_vin_dev { #ifdef CONFIG_DEBUG_FS struct dentry *debugfs; struct debugfs_regset32 regset; - struct debugfs_reg32 regs[9]; + struct debugfs_reg32 regs[sizeof(struct mgb4_vin_regs) / 4]; #endif }; diff --git a/drivers/media/pci/mgb4/mgb4_vout.c b/drivers/media/pci/mgb4/mgb4_vout.c index 243fbeaaceb9..a6b55669f0a8 100644 --- a/drivers/media/pci/mgb4/mgb4_vout.c +++ b/drivers/media/pci/mgb4/mgb4_vout.c @@ -16,6 +16,7 @@ #include #include #include +#include #include "mgb4_core.h" #include "mgb4_dma.h" #include "mgb4_sysfs.h" @@ -23,12 +24,16 @@ #include "mgb4_cmt.h" #include "mgb4_vout.h" +#define DEFAULT_WIDTH 1280 +#define DEFAULT_HEIGHT 640 +#define DEFAULT_PERIOD (MGB4_HW_FREQ / 60) + ATTRIBUTE_GROUPS(mgb4_fpdl3_out); ATTRIBUTE_GROUPS(mgb4_gmsl_out); static const struct mgb4_vout_config vout_cfg[] = { - {0, 0, 8, {0x78, 0x60, 0x64, 0x68, 0x74, 0x6C, 0x70, 0x7c}}, - {1, 1, 9, {0x98, 0x80, 0x84, 0x88, 0x94, 0x8c, 0x90, 0x9c}} + {0, 0, 8, {0x78, 0x60, 0x64, 0x68, 0x74, 0x6C, 0x70, 0x7C, 0xE0}}, + {1, 1, 9, {0x98, 0x80, 0x84, 0x88, 0x94, 0x8C, 0x90, 0x9C, 0xE4}} }; static const struct i2c_board_info fpdl3_ser_info[] = { @@ -40,6 +45,49 @@ static const struct mgb4_i2c_kv fpdl3_i2c[] = { {0x05, 0xFF, 0x04}, {0x06, 0xFF, 0x01}, {0xC2, 0xFF, 0x80} }; +static const struct v4l2_dv_timings_cap video_timings_cap = { + .type = V4L2_DV_BT_656_1120, + .bt = { + .min_width = 320, + .max_width = 4096, + .min_height = 240, + .max_height = 2160, + .min_pixelclock = 1843200, /* 320 x 240 x 24Hz */ + .max_pixelclock = 530841600, /* 4096 x 2160 x 60Hz */ + .standards = V4L2_DV_BT_STD_CEA861 | V4L2_DV_BT_STD_DMT | + V4L2_DV_BT_STD_CVT | V4L2_DV_BT_STD_GTF, + .capabilities = V4L2_DV_BT_CAP_PROGRESSIVE | + V4L2_DV_BT_CAP_CUSTOM, + }, +}; + +static void get_timings(struct mgb4_vout_dev *voutdev, + struct v4l2_dv_timings *timings) +{ + struct mgb4_regs *video = &voutdev->mgbdev->video; + const struct mgb4_vout_regs *regs = &voutdev->config->regs; + + u32 hsync = mgb4_read_reg(video, regs->hsync); + u32 vsync = mgb4_read_reg(video, regs->vsync); + u32 resolution = mgb4_read_reg(video, regs->resolution); + + memset(timings, 0, sizeof(*timings)); + timings->type = V4L2_DV_BT_656_1120; + timings->bt.width = resolution >> 16; + timings->bt.height = resolution & 0xFFFF; + if (hsync & (1U << 31)) + timings->bt.polarities |= V4L2_DV_HSYNC_POS_POL; + if (vsync & (1U << 31)) + timings->bt.polarities |= V4L2_DV_VSYNC_POS_POL; + timings->bt.pixelclock = voutdev->freq * 1000; + timings->bt.hsync = (hsync & 0x00FF0000) >> 16; + timings->bt.vsync = (vsync & 0x00FF0000) >> 16; + timings->bt.hbackporch = (hsync & 0x0000FF00) >> 8; + timings->bt.hfrontporch = hsync & 0x000000FF; + timings->bt.vbackporch = (vsync & 0x0000FF00) >> 8; + timings->bt.vfrontporch = vsync & 0x000000FF; +} + static void return_all_buffers(struct mgb4_vout_dev *voutdev, enum vb2_buffer_state state) { @@ -345,11 +393,134 @@ static int vidioc_enum_output(struct file *file, void *priv, return -EINVAL; out->type = V4L2_OUTPUT_TYPE_ANALOG; + out->capabilities = V4L2_OUT_CAP_DV_TIMINGS; strscpy(out->name, "MGB4", sizeof(out->name)); return 0; } +static int vidioc_enum_frameintervals(struct file *file, void *priv, + struct v4l2_frmivalenum *ival) +{ + struct mgb4_vout_dev *voutdev = video_drvdata(file); + struct mgb4_regs *video = &voutdev->mgbdev->video; + struct v4l2_dv_timings timings; + + if (ival->index != 0) + return -EINVAL; + if (!(ival->pixel_format == V4L2_PIX_FMT_ABGR32 || + ((has_yuv(video) && ival->pixel_format == V4L2_PIX_FMT_YUYV)))) + return -EINVAL; + if (ival->width != voutdev->width || ival->height != voutdev->height) + return -EINVAL; + + get_timings(voutdev, &timings); + + ival->type = V4L2_FRMIVAL_TYPE_STEPWISE; + ival->stepwise.max.denominator = MGB4_HW_FREQ; + ival->stepwise.max.numerator = 0xFFFFFFFF; + ival->stepwise.min.denominator = timings.bt.pixelclock; + ival->stepwise.min.numerator = pixel_size(&timings); + ival->stepwise.step.denominator = MGB4_HW_FREQ; + ival->stepwise.step.numerator = 1; + + return 0; +} + +static int vidioc_g_parm(struct file *file, void *priv, + struct v4l2_streamparm *parm) +{ + struct mgb4_vout_dev *voutdev = video_drvdata(file); + struct mgb4_regs *video = &voutdev->mgbdev->video; + struct v4l2_fract *tpf = &parm->parm.output.timeperframe; + struct v4l2_dv_timings timings; + u32 timer; + + if (parm->type != V4L2_BUF_TYPE_VIDEO_OUTPUT) + return -EINVAL; + + parm->parm.output.writebuffers = 2; + + if (has_timeperframe(video)) { + timer = mgb4_read_reg(video, voutdev->config->regs.timer); + if (timer < 0xFFFF) { + get_timings(voutdev, &timings); + tpf->numerator = pixel_size(&timings); + tpf->denominator = timings.bt.pixelclock; + } else { + tpf->numerator = timer; + tpf->denominator = MGB4_HW_FREQ; + } + + parm->parm.output.capability = V4L2_CAP_TIMEPERFRAME; + } + + return 0; +} + +static int vidioc_s_parm(struct file *file, void *priv, + struct v4l2_streamparm *parm) +{ + struct mgb4_vout_dev *voutdev = video_drvdata(file); + struct mgb4_regs *video = &voutdev->mgbdev->video; + struct v4l2_fract *tpf = &parm->parm.output.timeperframe; + struct v4l2_dv_timings timings; + u32 timer, period; + + if (parm->type != V4L2_BUF_TYPE_VIDEO_OUTPUT) + return -EINVAL; + + if (has_timeperframe(video)) { + timer = tpf->denominator ? + MGB4_PERIOD(tpf->numerator, tpf->denominator) : 0; + if (timer) { + get_timings(voutdev, &timings); + period = MGB4_PERIOD(pixel_size(&timings), + timings.bt.pixelclock); + if (timer < period) + timer = 0; + } + + mgb4_write_reg(video, voutdev->config->regs.timer, timer); + } + + return vidioc_g_parm(file, priv, parm); +} + +static int vidioc_g_dv_timings(struct file *file, void *fh, + struct v4l2_dv_timings *timings) +{ + struct mgb4_vout_dev *voutdev = video_drvdata(file); + + get_timings(voutdev, timings); + + return 0; +} + +static int vidioc_s_dv_timings(struct file *file, void *fh, + struct v4l2_dv_timings *timings) +{ + struct mgb4_vout_dev *voutdev = video_drvdata(file); + + get_timings(voutdev, timings); + + return 0; +} + +static int vidioc_enum_dv_timings(struct file *file, void *fh, + struct v4l2_enum_dv_timings *timings) +{ + return v4l2_enum_dv_timings_cap(timings, &video_timings_cap, NULL, NULL); +} + +static int vidioc_dv_timings_cap(struct file *file, void *fh, + struct v4l2_dv_timings_cap *cap) +{ + *cap = video_timings_cap; + + return 0; +} + static const struct v4l2_ioctl_ops video_ioctl_ops = { .vidioc_querycap = vidioc_querycap, .vidioc_enum_fmt_vid_out = vidioc_enum_fmt, @@ -357,8 +528,15 @@ static const struct v4l2_ioctl_ops video_ioctl_ops = { .vidioc_s_fmt_vid_out = vidioc_s_fmt, .vidioc_g_fmt_vid_out = vidioc_g_fmt, .vidioc_enum_output = vidioc_enum_output, + .vidioc_enum_frameintervals = vidioc_enum_frameintervals, .vidioc_g_output = vidioc_g_output, .vidioc_s_output = vidioc_s_output, + .vidioc_g_parm = vidioc_g_parm, + .vidioc_s_parm = vidioc_s_parm, + .vidioc_dv_timings_cap = vidioc_dv_timings_cap, + .vidioc_enum_dv_timings = vidioc_enum_dv_timings, + .vidioc_g_dv_timings = vidioc_g_dv_timings, + .vidioc_s_dv_timings = vidioc_s_dv_timings, .vidioc_reqbufs = vb2_ioctl_reqbufs, .vidioc_create_bufs = vb2_ioctl_create_bufs, .vidioc_prepare_buf = vb2_ioctl_prepare_buf, @@ -501,10 +679,10 @@ static void fpga_init(struct mgb4_vout_dev *voutdev) mgb4_write_reg(video, regs->config, 0x00000011); mgb4_write_reg(video, regs->resolution, - (MGB4_DEFAULT_WIDTH << 16) | MGB4_DEFAULT_HEIGHT); + (DEFAULT_WIDTH << 16) | DEFAULT_HEIGHT); mgb4_write_reg(video, regs->hsync, 0x00102020); mgb4_write_reg(video, regs->vsync, 0x40020202); - mgb4_write_reg(video, regs->frame_period, MGB4_DEFAULT_PERIOD); + mgb4_write_reg(video, regs->frame_period, DEFAULT_PERIOD); mgb4_write_reg(video, regs->padding, 0x00000000); voutdev->freq = mgb4_cmt_set_vout_freq(voutdev, 70000 >> 1) << 1; @@ -535,12 +713,18 @@ static void debugfs_init(struct mgb4_vout_dev *voutdev) voutdev->regs[4].offset = voutdev->config->regs.vsync; voutdev->regs[5].name = "FRAME_PERIOD"; voutdev->regs[5].offset = voutdev->config->regs.frame_period; - voutdev->regs[6].name = "PADDING"; + voutdev->regs[6].name = "PADDING_PIXELS"; voutdev->regs[6].offset = voutdev->config->regs.padding; + if (has_timeperframe(video)) { + voutdev->regs[7].name = "TIMER"; + voutdev->regs[7].offset = voutdev->config->regs.timer; + voutdev->regset.nregs = 8; + } else { + voutdev->regset.nregs = 7; + } voutdev->regset.base = video->membase; voutdev->regset.regs = voutdev->regs; - voutdev->regset.nregs = ARRAY_SIZE(voutdev->regs); debugfs_create_regset32("registers", 0444, voutdev->debugfs, &voutdev->regset); diff --git a/drivers/media/pci/mgb4/mgb4_vout.h b/drivers/media/pci/mgb4/mgb4_vout.h index b163dee711fd..ab9b58b1deb7 100644 --- a/drivers/media/pci/mgb4/mgb4_vout.h +++ b/drivers/media/pci/mgb4/mgb4_vout.h @@ -23,6 +23,7 @@ struct mgb4_vout_regs { u32 hsync; u32 vsync; u32 padding; + u32 timer; }; struct mgb4_vout_config { @@ -55,7 +56,7 @@ struct mgb4_vout_dev { #ifdef CONFIG_DEBUG_FS struct dentry *debugfs; struct debugfs_regset32 regset; - struct debugfs_reg32 regs[7]; + struct debugfs_reg32 regs[sizeof(struct mgb4_vout_regs) / 4]; #endif }; From patchwork Fri Mar 22 15:10:05 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: =?utf-8?q?Martin_T=C5=AFma?= X-Patchwork-Id: 13600188 Received: from mx.gpxsee.org (mx.gpxsee.org [37.205.14.76]) by smtp.subspace.kernel.org (Postfix) with ESMTP id E27C81CA80; 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(unknown [62.77.71.229]) by mx.gpxsee.org (Postfix) with ESMTPSA id 8E6A367184; Fri, 22 Mar 2024 15:10:22 +0100 (CET) From: tumic@gpxsee.org To: Mauro Carvalho Chehab , Hans Verkuil Cc: linux-media@vger.kernel.org, linux-kernel@vger.kernel.org, =?utf-8?q?Mar?= =?utf-8?q?tin_T=C5=AFma?= Subject: [PATCH v4 3/3] media: mgb4: Fixed signal frame rate limit handling Date: Fri, 22 Mar 2024 16:10:05 +0100 Message-ID: <20240322151005.3499-4-tumic@gpxsee.org> X-Mailer: git-send-email 2.44.0 In-Reply-To: <20240322151005.3499-1-tumic@gpxsee.org> References: <20240322151005.3499-1-tumic@gpxsee.org> Precedence: bulk X-Mailing-List: linux-media@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 From: Martin Tůma Properly document the function of the mgb4 output frame_rate sysfs parameter and fix the corner case when the frame rate is set to zero causing a "divide by zero" kernel panic. Signed-off-by: Martin Tůma --- Documentation/admin-guide/media/mgb4.rst | 8 ++++++-- drivers/media/pci/mgb4/mgb4_sysfs_out.c | 9 +++++---- drivers/media/pci/mgb4/mgb4_vout.c | 12 ++++++------ drivers/media/pci/mgb4/mgb4_vout.h | 2 +- 4 files changed, 18 insertions(+), 13 deletions(-) diff --git a/Documentation/admin-guide/media/mgb4.rst b/Documentation/admin-guide/media/mgb4.rst index 2977f74d7e26..6fff886003e2 100644 --- a/Documentation/admin-guide/media/mgb4.rst +++ b/Documentation/admin-guide/media/mgb4.rst @@ -228,8 +228,12 @@ Common FPDL3/GMSL output parameters open.* **frame_rate** (RW): - Output video frame rate in frames per second. The default frame rate is - 60Hz. + Output video signal frame rate limit in frames per second. Due to + the limited output pixel clock steps, the card can not always generate + a frame rate perfectly matching the value required by the connected display. + Using this parameter one can limit the frame rate by "crippling" the signal + so that the lines are not equal but the signal appears like having the exact + frame rate to the connected display. The default frame rate limit is 60Hz. **hsync_polarity** (RW): HSYNC signal polarity. diff --git a/drivers/media/pci/mgb4/mgb4_sysfs_out.c b/drivers/media/pci/mgb4/mgb4_sysfs_out.c index f67ff2a48329..573aa61c69d4 100644 --- a/drivers/media/pci/mgb4/mgb4_sysfs_out.c +++ b/drivers/media/pci/mgb4/mgb4_sysfs_out.c @@ -229,9 +229,9 @@ static ssize_t frame_rate_show(struct device *dev, struct video_device *vdev = to_video_device(dev); struct mgb4_vout_dev *voutdev = video_get_drvdata(vdev); u32 period = mgb4_read_reg(&voutdev->mgbdev->video, - voutdev->config->regs.frame_period); + voutdev->config->regs.frame_limit); - return sprintf(buf, "%u\n", MGB4_HW_FREQ / period); + return sprintf(buf, "%u\n", period ? MGB4_HW_FREQ / period : 0); } /* @@ -245,14 +245,15 @@ static ssize_t frame_rate_store(struct device *dev, struct video_device *vdev = to_video_device(dev); struct mgb4_vout_dev *voutdev = video_get_drvdata(vdev); unsigned long val; - int ret; + int limit, ret; ret = kstrtoul(buf, 10, &val); if (ret) return ret; + limit = val ? MGB4_HW_FREQ / val : 0; mgb4_write_reg(&voutdev->mgbdev->video, - voutdev->config->regs.frame_period, MGB4_HW_FREQ / val); + voutdev->config->regs.frame_limit, limit); return count; } diff --git a/drivers/media/pci/mgb4/mgb4_vout.c b/drivers/media/pci/mgb4/mgb4_vout.c index a6b55669f0a8..cd001ceaae63 100644 --- a/drivers/media/pci/mgb4/mgb4_vout.c +++ b/drivers/media/pci/mgb4/mgb4_vout.c @@ -680,12 +680,12 @@ static void fpga_init(struct mgb4_vout_dev *voutdev) mgb4_write_reg(video, regs->config, 0x00000011); mgb4_write_reg(video, regs->resolution, (DEFAULT_WIDTH << 16) | DEFAULT_HEIGHT); - mgb4_write_reg(video, regs->hsync, 0x00102020); - mgb4_write_reg(video, regs->vsync, 0x40020202); - mgb4_write_reg(video, regs->frame_period, DEFAULT_PERIOD); + mgb4_write_reg(video, regs->hsync, 0x00283232); + mgb4_write_reg(video, regs->vsync, 0x40141F1E); + mgb4_write_reg(video, regs->frame_limit, DEFAULT_PERIOD); mgb4_write_reg(video, regs->padding, 0x00000000); - voutdev->freq = mgb4_cmt_set_vout_freq(voutdev, 70000 >> 1) << 1; + voutdev->freq = mgb4_cmt_set_vout_freq(voutdev, 61150 >> 1) << 1; mgb4_write_reg(video, regs->config, (voutdev->config->id + MGB4_VIN_DEVICES) << 2 | 1 << 4); @@ -711,8 +711,8 @@ static void debugfs_init(struct mgb4_vout_dev *voutdev) voutdev->regs[3].offset = voutdev->config->regs.hsync; voutdev->regs[4].name = "VIDEO_PARAMS_2"; voutdev->regs[4].offset = voutdev->config->regs.vsync; - voutdev->regs[5].name = "FRAME_PERIOD"; - voutdev->regs[5].offset = voutdev->config->regs.frame_period; + voutdev->regs[5].name = "FRAME_LIMIT"; + voutdev->regs[5].offset = voutdev->config->regs.frame_limit; voutdev->regs[6].name = "PADDING_PIXELS"; voutdev->regs[6].offset = voutdev->config->regs.padding; if (has_timeperframe(video)) { diff --git a/drivers/media/pci/mgb4/mgb4_vout.h b/drivers/media/pci/mgb4/mgb4_vout.h index ab9b58b1deb7..adc8fe1e7ae6 100644 --- a/drivers/media/pci/mgb4/mgb4_vout.h +++ b/drivers/media/pci/mgb4/mgb4_vout.h @@ -19,7 +19,7 @@ struct mgb4_vout_regs { u32 config; u32 status; u32 resolution; - u32 frame_period; + u32 frame_limit; u32 hsync; u32 vsync; u32 padding;