+++ /dev/null
-From 4f0614de030f2a75be22a8f7ebc298e8260021cf Mon Sep 17 00:00:00 2001
-From: Dave Stevenson <6by9@users.noreply.github.com>
-Date: Sat, 16 Apr 2016 23:09:54 +0100
-Subject: [PATCH] V4L2: Request maximum resolution from GPU
-
-Get resolution information about the sensors from the GPU
-and advertise it correctly.
-
-Signed-off-by: Dave Stevenson <6by9@users.noreply.github.com>
----
- drivers/media/platform/bcm2835/bcm2835-camera.c | 59 +++++++++++++++++--------
- drivers/media/platform/bcm2835/bcm2835-camera.h | 3 +-
- 2 files changed, 43 insertions(+), 19 deletions(-)
-
---- a/drivers/media/platform/bcm2835/bcm2835-camera.c
-+++ b/drivers/media/platform/bcm2835/bcm2835-camera.c
-@@ -38,8 +38,6 @@
- #define BM2835_MMAL_MODULE_NAME "bcm2835-v4l2"
- #define MIN_WIDTH 16
- #define MIN_HEIGHT 16
--#define MAX_WIDTH 2592
--#define MAX_HEIGHT 1944
- #define MIN_BUFFER_SIZE (80*1024)
-
- #define MAX_VIDEO_MODE_WIDTH 1280
-@@ -729,11 +727,11 @@ static int vidioc_try_fmt_vid_overlay(st
- f->fmt.win.clipcount = 0;
- f->fmt.win.bitmap = NULL;
-
-- v4l_bound_align_image(&f->fmt.win.w.width, MIN_WIDTH, MAX_WIDTH, 1,
-- &f->fmt.win.w.height, MIN_HEIGHT, MAX_HEIGHT,
-+ v4l_bound_align_image(&f->fmt.win.w.width, MIN_WIDTH, dev->max_width, 1,
-+ &f->fmt.win.w.height, MIN_HEIGHT, dev->max_height,
- 1, 0);
-- v4l_bound_align_image(&f->fmt.win.w.left, MIN_WIDTH, MAX_WIDTH, 1,
-- &f->fmt.win.w.top, MIN_HEIGHT, MAX_HEIGHT,
-+ v4l_bound_align_image(&f->fmt.win.w.left, MIN_WIDTH, dev->max_width, 1,
-+ &f->fmt.win.w.top, MIN_HEIGHT, dev->max_height,
- 1, 0);
-
- v4l2_dbg(1, bcm2835_v4l2_debug, &dev->v4l2_dev,
-@@ -961,8 +959,9 @@ static int vidioc_try_fmt_vid_cap(struct
- "Clipping/aligning %dx%d format %08X\n",
- f->fmt.pix.width, f->fmt.pix.height, f->fmt.pix.pixelformat);
-
-- v4l_bound_align_image(&f->fmt.pix.width, MIN_WIDTH, MAX_WIDTH, 1,
-- &f->fmt.pix.height, MIN_HEIGHT, MAX_HEIGHT, 1, 0);
-+ v4l_bound_align_image(&f->fmt.pix.width, MIN_WIDTH, dev->max_width, 1,
-+ &f->fmt.pix.height, MIN_HEIGHT, dev->max_height,
-+ 1, 0);
- f->fmt.pix.bytesperline = f->fmt.pix.width * mfmt->ybbp;
-
- /* Image buffer has to be padded to allow for alignment, even though
-@@ -1301,9 +1300,10 @@ static int vidioc_s_fmt_vid_cap(struct f
- int vidioc_enum_framesizes(struct file *file, void *fh,
- struct v4l2_frmsizeenum *fsize)
- {
-+ struct bm2835_mmal_dev *dev = video_drvdata(file);
- static const struct v4l2_frmsize_stepwise sizes = {
-- MIN_WIDTH, MAX_WIDTH, 2,
-- MIN_HEIGHT, MAX_HEIGHT, 2
-+ MIN_WIDTH, 0, 2,
-+ MIN_HEIGHT, 0, 2
- };
- int i;
-
-@@ -1316,6 +1316,8 @@ int vidioc_enum_framesizes(struct file *
- return -EINVAL;
- fsize->type = V4L2_FRMSIZE_TYPE_STEPWISE;
- fsize->stepwise = sizes;
-+ fsize->stepwise.max_width = dev->max_width;
-+ fsize->stepwise.max_height = dev->max_height;
- return 0;
- }
-
-@@ -1323,6 +1325,7 @@ int vidioc_enum_framesizes(struct file *
- static int vidioc_enum_frameintervals(struct file *file, void *priv,
- struct v4l2_frmivalenum *fival)
- {
-+ struct bm2835_mmal_dev *dev = video_drvdata(file);
- int i;
-
- if (fival->index)
-@@ -1335,8 +1338,8 @@ static int vidioc_enum_frameintervals(st
- return -EINVAL;
-
- /* regarding width & height - we support any within range */
-- if (fival->width < MIN_WIDTH || fival->width > MAX_WIDTH ||
-- fival->height < MIN_HEIGHT || fival->height > MAX_HEIGHT)
-+ if (fival->width < MIN_WIDTH || fival->width > dev->max_width ||
-+ fival->height < MIN_HEIGHT || fival->height > dev->max_height)
- return -EINVAL;
-
- fival->type = V4L2_FRMIVAL_TYPE_CONTINUOUS;
-@@ -1499,12 +1502,17 @@ static struct video_device vdev_template
- .release = video_device_release_empty,
- };
-
--static int get_num_cameras(struct vchiq_mmal_instance *instance)
-+/* Returns the number of cameras, and also the max resolution supported
-+ * by those cameras.
-+ */
-+static int get_num_cameras(struct vchiq_mmal_instance *instance,
-+ unsigned int resolutions[][2], int num_resolutions)
- {
- int ret;
- struct vchiq_mmal_component *cam_info_component;
- struct mmal_parameter_camera_info_t cam_info = {0};
- int param_size = sizeof(cam_info);
-+ int i;
-
- /* create a camera_info component */
- ret = vchiq_mmal_component_init(instance, "camera_info",
-@@ -1520,6 +1528,14 @@ static int get_num_cameras(struct vchiq_
- ¶m_size)) {
- pr_info("Failed to get camera info\n");
- }
-+ for (i = 0;
-+ i < (cam_info.num_cameras > num_resolutions ?
-+ cam_info.num_cameras :
-+ num_resolutions);
-+ i++) {
-+ resolutions[i][0] = cam_info.cameras[i].max_width;
-+ resolutions[i][1] = cam_info.cameras[i].max_height;
-+ }
-
- vchiq_mmal_component_finalise(instance,
- cam_info_component);
-@@ -1528,12 +1544,13 @@ static int get_num_cameras(struct vchiq_
- }
-
- static int set_camera_parameters(struct vchiq_mmal_instance *instance,
-- struct vchiq_mmal_component *camera)
-+ struct vchiq_mmal_component *camera,
-+ struct bm2835_mmal_dev *dev)
- {
- int ret;
- struct mmal_parameter_camera_config cam_config = {
-- .max_stills_w = MAX_WIDTH,
-- .max_stills_h = MAX_HEIGHT,
-+ .max_stills_w = dev->max_width,
-+ .max_stills_h = dev->max_height,
- .stills_yuv422 = 1,
- .one_shot_stills = 1,
- .max_preview_video_w = (max_video_width > 1920) ?
-@@ -1576,7 +1593,8 @@ static int __init mmal_init(struct bm283
- }
-
- ret = set_camera_parameters(dev->instance,
-- dev->component[MMAL_COMPONENT_CAMERA]);
-+ dev->component[MMAL_COMPONENT_CAMERA],
-+ dev);
- if (ret < 0)
- goto unreg_camera;
-
-@@ -1838,12 +1856,15 @@ static int __init bm2835_mmal_init(void)
- int camera;
- unsigned int num_cameras;
- struct vchiq_mmal_instance *instance;
-+ unsigned int resolutions[MAX_BCM2835_CAMERAS][2];
-
- ret = vchiq_mmal_init(&instance);
- if (ret < 0)
- return ret;
-
-- num_cameras = get_num_cameras(instance);
-+ num_cameras = get_num_cameras(instance,
-+ resolutions,
-+ MAX_BCM2835_CAMERAS);
- if (num_cameras > MAX_BCM2835_CAMERAS)
- num_cameras = MAX_BCM2835_CAMERAS;
-
-@@ -1853,6 +1874,8 @@ static int __init bm2835_mmal_init(void)
- return -ENOMEM;
-
- dev->camera_num = camera;
-+ dev->max_width = resolutions[camera][0];
-+ dev->max_height = resolutions[camera][1];
-
- /* setup device defaults */
- dev->overlay.w.left = 150;
---- a/drivers/media/platform/bcm2835/bcm2835-camera.h
-+++ b/drivers/media/platform/bcm2835/bcm2835-camera.h
-@@ -107,7 +107,8 @@ struct bm2835_mmal_dev {
- } capture;
-
- unsigned int camera_num;
--
-+ unsigned int max_width;
-+ unsigned int max_height;
- };
-
- int bm2835_mmal_init_controls(
projects / openwrt / staging / chunkeey.git / blobdiff