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-rw-r--r--drivers/media/i2c/adv7604.c4
-rw-r--r--drivers/media/i2c/adv7842.c4
-rw-r--r--drivers/media/platform/vivid/vivid-vid-cap.c5
-rw-r--r--drivers/media/v4l2-core/v4l2-dv-timings.c53
4 files changed, 54 insertions, 12 deletions
diff --git a/drivers/media/i2c/adv7604.c b/drivers/media/i2c/adv7604.c
index daf9386a5031..808360fd6539 100644
--- a/drivers/media/i2c/adv7604.c
+++ b/drivers/media/i2c/adv7604.c
@@ -1331,12 +1331,12 @@ static int stdi2dv_timings(struct v4l2_subdev *sd,
if (v4l2_detect_cvt(stdi->lcf + 1, hfreq, stdi->lcvs,
(stdi->hs_pol == '+' ? V4L2_DV_HSYNC_POS_POL : 0) |
(stdi->vs_pol == '+' ? V4L2_DV_VSYNC_POS_POL : 0),
- timings))
+ false, timings))
return 0;
if (v4l2_detect_gtf(stdi->lcf + 1, hfreq, stdi->lcvs,
(stdi->hs_pol == '+' ? V4L2_DV_HSYNC_POS_POL : 0) |
(stdi->vs_pol == '+' ? V4L2_DV_VSYNC_POS_POL : 0),
- state->aspect_ratio, timings))
+ false, state->aspect_ratio, timings))
return 0;
v4l2_dbg(2, debug, sd,
diff --git a/drivers/media/i2c/adv7842.c b/drivers/media/i2c/adv7842.c
index f14ea78a7c9c..4cf79b2422d4 100644
--- a/drivers/media/i2c/adv7842.c
+++ b/drivers/media/i2c/adv7842.c
@@ -1445,12 +1445,12 @@ static int stdi2dv_timings(struct v4l2_subdev *sd,
if (v4l2_detect_cvt(stdi->lcf + 1, hfreq, stdi->lcvs,
(stdi->hs_pol == '+' ? V4L2_DV_HSYNC_POS_POL : 0) |
(stdi->vs_pol == '+' ? V4L2_DV_VSYNC_POS_POL : 0),
- timings))
+ false, timings))
return 0;
if (v4l2_detect_gtf(stdi->lcf + 1, hfreq, stdi->lcvs,
(stdi->hs_pol == '+' ? V4L2_DV_HSYNC_POS_POL : 0) |
(stdi->vs_pol == '+' ? V4L2_DV_VSYNC_POS_POL : 0),
- state->aspect_ratio, timings))
+ false, state->aspect_ratio, timings))
return 0;
v4l2_dbg(2, debug, sd,
diff --git a/drivers/media/platform/vivid/vivid-vid-cap.c b/drivers/media/platform/vivid/vivid-vid-cap.c
index 7b80bda4c34c..d83bdf7df194 100644
--- a/drivers/media/platform/vivid/vivid-vid-cap.c
+++ b/drivers/media/platform/vivid/vivid-vid-cap.c
@@ -1628,7 +1628,7 @@ static bool valid_cvt_gtf_timings(struct v4l2_dv_timings *timings)
if (bt->standards == 0 || (bt->standards & V4L2_DV_BT_STD_CVT)) {
if (v4l2_detect_cvt(total_v_lines, h_freq, bt->vsync,
- bt->polarities, timings))
+ bt->polarities, false, timings))
return true;
}
@@ -1639,7 +1639,8 @@ static bool valid_cvt_gtf_timings(struct v4l2_dv_timings *timings)
&aspect_ratio.numerator,
&aspect_ratio.denominator);
if (v4l2_detect_gtf(total_v_lines, h_freq, bt->vsync,
- bt->polarities, aspect_ratio, timings))
+ bt->polarities, false,
+ aspect_ratio, timings))
return true;
}
return false;
diff --git a/drivers/media/v4l2-core/v4l2-dv-timings.c b/drivers/media/v4l2-core/v4l2-dv-timings.c
index 903140591269..04dc71e3ebf0 100644
--- a/drivers/media/v4l2-core/v4l2-dv-timings.c
+++ b/drivers/media/v4l2-core/v4l2-dv-timings.c
@@ -346,6 +346,7 @@ EXPORT_SYMBOL_GPL(v4l2_print_dv_timings);
* @vsync - the height of the vertical sync in lines.
* @polarities - the horizontal and vertical polarities (same as struct
* v4l2_bt_timings polarities).
+ * @interlaced - if this flag is true, it indicates interlaced format
* @fmt - the resulting timings.
*
* This function will attempt to detect if the given values correspond to a
@@ -357,7 +358,7 @@ EXPORT_SYMBOL_GPL(v4l2_print_dv_timings);
* detection function.
*/
bool v4l2_detect_cvt(unsigned frame_height, unsigned hfreq, unsigned vsync,
- u32 polarities, struct v4l2_dv_timings *fmt)
+ u32 polarities, bool interlaced, struct v4l2_dv_timings *fmt)
{
int v_fp, v_bp, h_fp, h_bp, hsync;
int frame_width, image_height, image_width;
@@ -392,7 +393,11 @@ bool v4l2_detect_cvt(unsigned frame_height, unsigned hfreq, unsigned vsync,
if (v_bp < CVT_MIN_V_BPORCH)
v_bp = CVT_MIN_V_BPORCH;
}
- image_height = (frame_height - v_fp - vsync - v_bp + 1) & ~0x1;
+
+ if (interlaced)
+ image_height = (frame_height - 2 * v_fp - 2 * vsync - 2 * v_bp) & ~0x1;
+ else
+ image_height = (frame_height - v_fp - vsync - v_bp + 1) & ~0x1;
if (image_height < 0)
return false;
@@ -465,11 +470,27 @@ bool v4l2_detect_cvt(unsigned frame_height, unsigned hfreq, unsigned vsync,
fmt->bt.hsync = hsync;
fmt->bt.vsync = vsync;
fmt->bt.hbackporch = frame_width - image_width - h_fp - hsync;
- fmt->bt.vbackporch = frame_height - image_height - v_fp - vsync;
+
+ if (!interlaced) {
+ fmt->bt.vbackporch = frame_height - image_height - v_fp - vsync;
+ fmt->bt.interlaced = V4L2_DV_PROGRESSIVE;
+ } else {
+ fmt->bt.vbackporch = (frame_height - image_height - 2 * v_fp -
+ 2 * vsync) / 2;
+ fmt->bt.il_vbackporch = frame_height - image_height - 2 * v_fp -
+ 2 * vsync - fmt->bt.vbackporch;
+ fmt->bt.il_vfrontporch = v_fp;
+ fmt->bt.il_vsync = vsync;
+ fmt->bt.flags |= V4L2_DV_FL_HALF_LINE;
+ fmt->bt.interlaced = V4L2_DV_INTERLACED;
+ }
+
fmt->bt.pixelclock = pix_clk;
fmt->bt.standards = V4L2_DV_BT_STD_CVT;
+
if (reduced_blanking)
fmt->bt.flags |= V4L2_DV_FL_REDUCED_BLANKING;
+
return true;
}
EXPORT_SYMBOL_GPL(v4l2_detect_cvt);
@@ -508,6 +529,7 @@ EXPORT_SYMBOL_GPL(v4l2_detect_cvt);
* @vsync - the height of the vertical sync in lines.
* @polarities - the horizontal and vertical polarities (same as struct
* v4l2_bt_timings polarities).
+ * @interlaced - if this flag is true, it indicates interlaced format
* @aspect - preferred aspect ratio. GTF has no method of determining the
* aspect ratio in order to derive the image width from the
* image height, so it has to be passed explicitly. Usually
@@ -523,6 +545,7 @@ bool v4l2_detect_gtf(unsigned frame_height,
unsigned hfreq,
unsigned vsync,
u32 polarities,
+ bool interlaced,
struct v4l2_fract aspect,
struct v4l2_dv_timings *fmt)
{
@@ -547,9 +570,11 @@ bool v4l2_detect_gtf(unsigned frame_height,
/* Vertical */
v_fp = GTF_V_FP;
-
v_bp = (GTF_MIN_VSYNC_BP * hfreq + 500000) / 1000000 - vsync;
- image_height = (frame_height - v_fp - vsync - v_bp + 1) & ~0x1;
+ if (interlaced)
+ image_height = (frame_height - 2 * v_fp - 2 * vsync - 2 * v_bp) & ~0x1;
+ else
+ image_height = (frame_height - v_fp - vsync - v_bp + 1) & ~0x1;
if (image_height < 0)
return false;
@@ -603,11 +628,27 @@ bool v4l2_detect_gtf(unsigned frame_height,
fmt->bt.hsync = hsync;
fmt->bt.vsync = vsync;
fmt->bt.hbackporch = frame_width - image_width - h_fp - hsync;
- fmt->bt.vbackporch = frame_height - image_height - v_fp - vsync;
+
+ if (!interlaced) {
+ fmt->bt.vbackporch = frame_height - image_height - v_fp - vsync;
+ fmt->bt.interlaced = V4L2_DV_PROGRESSIVE;
+ } else {
+ fmt->bt.vbackporch = (frame_height - image_height - 2 * v_fp -
+ 2 * vsync) / 2;
+ fmt->bt.il_vbackporch = frame_height - image_height - 2 * v_fp -
+ 2 * vsync - fmt->bt.vbackporch;
+ fmt->bt.il_vfrontporch = v_fp;
+ fmt->bt.il_vsync = vsync;
+ fmt->bt.flags |= V4L2_DV_FL_HALF_LINE;
+ fmt->bt.interlaced = V4L2_DV_INTERLACED;
+ }
+
fmt->bt.pixelclock = pix_clk;
fmt->bt.standards = V4L2_DV_BT_STD_GTF;
+
if (!default_gtf)
fmt->bt.flags |= V4L2_DV_FL_REDUCED_BLANKING;
+
return true;
}
EXPORT_SYMBOL_GPL(v4l2_detect_gtf);
generated by cgit v1.2.3 (git 2.39.0) at 2024-12-24 01:19:45 +0300