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193 lines
6.4 KiB
193 lines
6.4 KiB
From 99f198703d9ba6c286ca936850a12e6ca3f6b78b Mon Sep 17 00:00:00 2001
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From: Dave Stevenson <6by9@users.noreply.github.com>
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Date: Sat, 16 Apr 2016 23:09:54 +0100
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Subject: [PATCH 300/423] V4L2: Request maximum resolution from GPU
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Get resolution information about the sensors from the GPU
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and advertise it correctly.
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Signed-off-by: Dave Stevenson <6by9@users.noreply.github.com>
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---
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drivers/media/platform/bcm2835/bcm2835-camera.c | 59 +++++++++++++++++--------
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drivers/media/platform/bcm2835/bcm2835-camera.h | 3 +-
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2 files changed, 43 insertions(+), 19 deletions(-)
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--- a/drivers/media/platform/bcm2835/bcm2835-camera.c
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+++ b/drivers/media/platform/bcm2835/bcm2835-camera.c
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@@ -38,8 +38,6 @@
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#define BM2835_MMAL_MODULE_NAME "bcm2835-v4l2"
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#define MIN_WIDTH 16
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#define MIN_HEIGHT 16
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-#define MAX_WIDTH 2592
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-#define MAX_HEIGHT 1944
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#define MIN_BUFFER_SIZE (80*1024)
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#define MAX_VIDEO_MODE_WIDTH 1280
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@@ -729,11 +727,11 @@ static int vidioc_try_fmt_vid_overlay(st
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f->fmt.win.clipcount = 0;
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f->fmt.win.bitmap = NULL;
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- v4l_bound_align_image(&f->fmt.win.w.width, MIN_WIDTH, MAX_WIDTH, 1,
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- &f->fmt.win.w.height, MIN_HEIGHT, MAX_HEIGHT,
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+ v4l_bound_align_image(&f->fmt.win.w.width, MIN_WIDTH, dev->max_width, 1,
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+ &f->fmt.win.w.height, MIN_HEIGHT, dev->max_height,
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1, 0);
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- v4l_bound_align_image(&f->fmt.win.w.left, MIN_WIDTH, MAX_WIDTH, 1,
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- &f->fmt.win.w.top, MIN_HEIGHT, MAX_HEIGHT,
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+ v4l_bound_align_image(&f->fmt.win.w.left, MIN_WIDTH, dev->max_width, 1,
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+ &f->fmt.win.w.top, MIN_HEIGHT, dev->max_height,
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1, 0);
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v4l2_dbg(1, bcm2835_v4l2_debug, &dev->v4l2_dev,
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@@ -961,8 +959,9 @@ static int vidioc_try_fmt_vid_cap(struct
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"Clipping/aligning %dx%d format %08X\n",
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f->fmt.pix.width, f->fmt.pix.height, f->fmt.pix.pixelformat);
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- v4l_bound_align_image(&f->fmt.pix.width, MIN_WIDTH, MAX_WIDTH, 1,
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- &f->fmt.pix.height, MIN_HEIGHT, MAX_HEIGHT, 1, 0);
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+ v4l_bound_align_image(&f->fmt.pix.width, MIN_WIDTH, dev->max_width, 1,
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+ &f->fmt.pix.height, MIN_HEIGHT, dev->max_height,
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+ 1, 0);
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f->fmt.pix.bytesperline = f->fmt.pix.width * mfmt->ybbp;
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/* Image buffer has to be padded to allow for alignment, even though
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@@ -1301,9 +1300,10 @@ static int vidioc_s_fmt_vid_cap(struct f
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int vidioc_enum_framesizes(struct file *file, void *fh,
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struct v4l2_frmsizeenum *fsize)
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{
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+ struct bm2835_mmal_dev *dev = video_drvdata(file);
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static const struct v4l2_frmsize_stepwise sizes = {
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- MIN_WIDTH, MAX_WIDTH, 2,
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- MIN_HEIGHT, MAX_HEIGHT, 2
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+ MIN_WIDTH, 0, 2,
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+ MIN_HEIGHT, 0, 2
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};
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int i;
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@@ -1316,6 +1316,8 @@ int vidioc_enum_framesizes(struct file *
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return -EINVAL;
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fsize->type = V4L2_FRMSIZE_TYPE_STEPWISE;
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fsize->stepwise = sizes;
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+ fsize->stepwise.max_width = dev->max_width;
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+ fsize->stepwise.max_height = dev->max_height;
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return 0;
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}
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@@ -1323,6 +1325,7 @@ int vidioc_enum_framesizes(struct file *
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static int vidioc_enum_frameintervals(struct file *file, void *priv,
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struct v4l2_frmivalenum *fival)
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{
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+ struct bm2835_mmal_dev *dev = video_drvdata(file);
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int i;
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if (fival->index)
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@@ -1335,8 +1338,8 @@ static int vidioc_enum_frameintervals(st
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return -EINVAL;
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/* regarding width & height - we support any within range */
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- if (fival->width < MIN_WIDTH || fival->width > MAX_WIDTH ||
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- fival->height < MIN_HEIGHT || fival->height > MAX_HEIGHT)
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+ if (fival->width < MIN_WIDTH || fival->width > dev->max_width ||
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+ fival->height < MIN_HEIGHT || fival->height > dev->max_height)
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return -EINVAL;
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fival->type = V4L2_FRMIVAL_TYPE_CONTINUOUS;
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@@ -1499,12 +1502,17 @@ static struct video_device vdev_template
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.release = video_device_release_empty,
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};
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-static int get_num_cameras(struct vchiq_mmal_instance *instance)
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+/* Returns the number of cameras, and also the max resolution supported
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+ * by those cameras.
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+ */
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+static int get_num_cameras(struct vchiq_mmal_instance *instance,
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+ unsigned int resolutions[][2], int num_resolutions)
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{
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int ret;
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struct vchiq_mmal_component *cam_info_component;
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struct mmal_parameter_camera_info_t cam_info = {0};
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int param_size = sizeof(cam_info);
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+ int i;
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/* create a camera_info component */
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ret = vchiq_mmal_component_init(instance, "camera_info",
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@@ -1520,6 +1528,14 @@ static int get_num_cameras(struct vchiq_
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¶m_size)) {
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pr_info("Failed to get camera info\n");
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}
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+ for (i = 0;
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+ i < (cam_info.num_cameras > num_resolutions ?
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+ cam_info.num_cameras :
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+ num_resolutions);
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+ i++) {
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+ resolutions[i][0] = cam_info.cameras[i].max_width;
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+ resolutions[i][1] = cam_info.cameras[i].max_height;
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+ }
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vchiq_mmal_component_finalise(instance,
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cam_info_component);
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@@ -1528,12 +1544,13 @@ static int get_num_cameras(struct vchiq_
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}
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static int set_camera_parameters(struct vchiq_mmal_instance *instance,
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- struct vchiq_mmal_component *camera)
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+ struct vchiq_mmal_component *camera,
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+ struct bm2835_mmal_dev *dev)
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{
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int ret;
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struct mmal_parameter_camera_config cam_config = {
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- .max_stills_w = MAX_WIDTH,
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- .max_stills_h = MAX_HEIGHT,
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+ .max_stills_w = dev->max_width,
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+ .max_stills_h = dev->max_height,
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.stills_yuv422 = 1,
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.one_shot_stills = 1,
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.max_preview_video_w = (max_video_width > 1920) ?
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@@ -1576,7 +1593,8 @@ static int __init mmal_init(struct bm283
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}
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ret = set_camera_parameters(dev->instance,
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- dev->component[MMAL_COMPONENT_CAMERA]);
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+ dev->component[MMAL_COMPONENT_CAMERA],
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+ dev);
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if (ret < 0)
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goto unreg_camera;
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@@ -1838,12 +1856,15 @@ static int __init bm2835_mmal_init(void)
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int camera;
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unsigned int num_cameras;
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struct vchiq_mmal_instance *instance;
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+ unsigned int resolutions[MAX_BCM2835_CAMERAS][2];
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ret = vchiq_mmal_init(&instance);
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if (ret < 0)
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return ret;
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- num_cameras = get_num_cameras(instance);
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+ num_cameras = get_num_cameras(instance,
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+ resolutions,
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+ MAX_BCM2835_CAMERAS);
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if (num_cameras > MAX_BCM2835_CAMERAS)
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num_cameras = MAX_BCM2835_CAMERAS;
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@@ -1853,6 +1874,8 @@ static int __init bm2835_mmal_init(void)
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return -ENOMEM;
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dev->camera_num = camera;
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+ dev->max_width = resolutions[camera][0];
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+ dev->max_height = resolutions[camera][1];
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/* setup device defaults */
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dev->overlay.w.left = 150;
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--- a/drivers/media/platform/bcm2835/bcm2835-camera.h
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+++ b/drivers/media/platform/bcm2835/bcm2835-camera.h
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@@ -107,7 +107,8 @@ struct bm2835_mmal_dev {
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} capture;
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unsigned int camera_num;
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-
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+ unsigned int max_width;
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+ unsigned int max_height;
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};
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int bm2835_mmal_init_controls(
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