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authorMauro Carvalho Chehab <mchehab+samsung@kernel.org>2019-02-27 00:03:45 +0300
committerMauro Carvalho Chehab <mchehab+samsung@kernel.org>2019-03-01 19:05:23 +0300
commit9c9c396ce6c7f32a411bfe2fbce848d2045769c5 (patch)
tree2f89f8d4955f1d73c45def40af578d420f2be28d /drivers/media
parent77e05ef7d464b319577b072aa6728200d0cdf787 (diff)
downloadlinux-9c9c396ce6c7f32a411bfe2fbce848d2045769c5.tar.xz
media: vim2m: add support for VIDIOC_ENUM_FRAMESIZES
As we do alignments for width, expose it via V4L2 API. Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
Diffstat (limited to 'drivers/media')
-rw-r--r--drivers/media/platform/vim2m.c38
1 files changed, 29 insertions, 9 deletions
diff --git a/drivers/media/platform/vim2m.c b/drivers/media/platform/vim2m.c
index 6bd30ffb0c4a..620f064ff12a 100644
--- a/drivers/media/platform/vim2m.c
+++ b/drivers/media/platform/vim2m.c
@@ -50,7 +50,7 @@ MODULE_PARM_DESC(default_transtime, "default transaction time in ms");
#define MIN_H 32
#define MAX_W 640
#define MAX_H 480
-#define DIM_ALIGN_MASK 1 /* 2-byte alignment */
+#define WIDTH_ALIGN 2 /* 2-byte alignment */
/* Flags that indicate a format can be used for capture/output */
#define MEM2MEM_CAPTURE (1 << 0)
@@ -145,14 +145,14 @@ enum {
#define V4L2_CID_TRANS_TIME_MSEC (V4L2_CID_USER_BASE + 0x1000)
#define V4L2_CID_TRANS_NUM_BUFS (V4L2_CID_USER_BASE + 0x1001)
-static struct vim2m_fmt *find_format(struct v4l2_format *f)
+static struct vim2m_fmt *find_format(u32 fourcc)
{
struct vim2m_fmt *fmt;
unsigned int k;
for (k = 0; k < NUM_FORMATS; k++) {
fmt = &formats[k];
- if (fmt->fourcc == f->fmt.pix.pixelformat)
+ if (fmt->fourcc == fourcc)
break;
}
@@ -677,6 +677,25 @@ static int vidioc_enum_fmt_vid_out(struct file *file, void *priv,
return enum_fmt(f, MEM2MEM_OUTPUT);
}
+static int vidioc_enum_framesizes(struct file *file, void *priv,
+ struct v4l2_frmsizeenum *fsize)
+{
+ if (fsize->index != 0)
+ return -EINVAL;
+
+ if (!find_format(fsize->pixel_format))
+ return -EINVAL;
+
+ fsize->type = V4L2_FRMSIZE_TYPE_STEPWISE;
+ fsize->stepwise.min_width = MIN_W;
+ fsize->stepwise.min_height = MIN_H;
+ fsize->stepwise.max_width = MAX_W;
+ fsize->stepwise.max_height = MAX_H;
+ fsize->stepwise.step_width = WIDTH_ALIGN;
+ fsize->stepwise.step_height = 1;
+ return 0;
+}
+
static int vidioc_g_fmt(struct vim2m_ctx *ctx, struct v4l2_format *f)
{
struct vb2_queue *vq;
@@ -728,7 +747,7 @@ static int vidioc_try_fmt(struct v4l2_format *f, struct vim2m_fmt *fmt)
else if (f->fmt.pix.width > MAX_W)
f->fmt.pix.width = MAX_W;
- f->fmt.pix.width &= ~DIM_ALIGN_MASK;
+ f->fmt.pix.width &= ~(WIDTH_ALIGN - 1);
f->fmt.pix.bytesperline = (f->fmt.pix.width * fmt->depth) >> 3;
f->fmt.pix.sizeimage = f->fmt.pix.height * f->fmt.pix.bytesperline;
f->fmt.pix.field = V4L2_FIELD_NONE;
@@ -742,10 +761,10 @@ static int vidioc_try_fmt_vid_cap(struct file *file, void *priv,
struct vim2m_fmt *fmt;
struct vim2m_ctx *ctx = file2ctx(file);
- fmt = find_format(f);
+ fmt = find_format(f->fmt.pix.pixelformat);
if (!fmt) {
f->fmt.pix.pixelformat = formats[0].fourcc;
- fmt = find_format(f);
+ fmt = find_format(f->fmt.pix.pixelformat);
}
if (!(fmt->types & MEM2MEM_CAPTURE)) {
v4l2_err(&ctx->dev->v4l2_dev,
@@ -767,10 +786,10 @@ static int vidioc_try_fmt_vid_out(struct file *file, void *priv,
struct vim2m_fmt *fmt;
struct vim2m_ctx *ctx = file2ctx(file);
- fmt = find_format(f);
+ fmt = find_format(f->fmt.pix.pixelformat);
if (!fmt) {
f->fmt.pix.pixelformat = formats[0].fourcc;
- fmt = find_format(f);
+ fmt = find_format(f->fmt.pix.pixelformat);
}
if (!(fmt->types & MEM2MEM_OUTPUT)) {
v4l2_err(&ctx->dev->v4l2_dev,
@@ -802,7 +821,7 @@ static int vidioc_s_fmt(struct vim2m_ctx *ctx, struct v4l2_format *f)
return -EBUSY;
}
- q_data->fmt = find_format(f);
+ q_data->fmt = find_format(f->fmt.pix.pixelformat);
q_data->width = f->fmt.pix.width;
q_data->height = f->fmt.pix.height;
q_data->sizeimage = q_data->width * q_data->height
@@ -899,6 +918,7 @@ static const struct v4l2_ioctl_ops vim2m_ioctl_ops = {
.vidioc_querycap = vidioc_querycap,
.vidioc_enum_fmt_vid_cap = vidioc_enum_fmt_vid_cap,
+ .vidioc_enum_framesizes = vidioc_enum_framesizes,
.vidioc_g_fmt_vid_cap = vidioc_g_fmt_vid_cap,
.vidioc_try_fmt_vid_cap = vidioc_try_fmt_vid_cap,
.vidioc_s_fmt_vid_cap = vidioc_s_fmt_vid_cap,