Create overscan profiles reducing the displayed zone.
For each TV standard (PAL and NTSC so far), we create 4 more reduced modes
by steps of 5% that the user will be able to select.
Signed-off-by: Maxime Ripard <maxime.ripard at free-electrons.com>
---
drivers/gpu/drm/sun4i/sun4i_tv.c | 60 +++++++++++++++++++--------------
1 file changed, 36 insertions(+), 24 deletions(-)
diff --git a/drivers/gpu/drm/sun4i/sun4i_tv.c b/drivers/gpu/drm/sun4i/sun4i_tv.c
index f99886462cb8..9ee03ba086b6 100644
--- a/drivers/gpu/drm/sun4i/sun4i_tv.c
+++ b/drivers/gpu/drm/sun4i/sun4i_tv.c
@@ -301,27 +301,33 @@ static const struct tv_mode
*sun4i_tv_find_tv_by_mode(const struct drm_display_m
DRM_DEBUG_DRIVER("Comparing mode %s vs %s",
mode->name, tv_mode->name);
- if (!strcmp(mode->name, tv_mode->name))
+ if (!strncmp(mode->name, tv_mode->name, strlen(tv_mode->name)))
return tv_mode;
}
/* Then by number of lines */
for (i = 0; i < ARRAY_SIZE(tv_modes); i++) {
const struct tv_mode *tv_mode = &tv_modes[i];
+ int j;
- DRM_DEBUG_DRIVER("Comparing mode %s vs %s (X: %d vs %d)",
- mode->name, tv_mode->name,
- mode->vdisplay, tv_mode->vdisplay);
+ for (j = 0; j < 20; j += 5) {
+ u32 vdisplay = tv_mode->vdisplay * (100 - j) / 100;
- if (mode->vdisplay == tv_mode->vdisplay)
- return tv_mode;
+ DRM_DEBUG_DRIVER("Comparing mode with %s (%d) (X: %d vs
%d)",
+ tv_mode->name, j,
+ vdisplay, tv_mode->vdisplay);
+
+ if (vdisplay == tv_mode->vdisplay)
+ return tv_mode;
+ }
}
return NULL;
}
static void sun4i_tv_mode_to_drm_mode(const struct tv_mode *tv_mode,
- struct drm_display_mode *mode)
+ struct drm_display_mode *mode,
+ int overscan)
{
DRM_DEBUG_DRIVER("Creating mode %s\n", mode->name);
@@ -329,12 +335,12 @@ static void sun4i_tv_mode_to_drm_mode(const struct
tv_mode *tv_mode,
mode->clock = 13500;
mode->flags = DRM_MODE_FLAG_INTERLACE;
- mode->hdisplay = tv_mode->hdisplay;
+ mode->hdisplay = tv_mode->hdisplay * (100 - overscan) / 100;
mode->hsync_start = mode->hdisplay + tv_mode->hfront_porch;
mode->hsync_end = mode->hsync_start + tv_mode->hsync_len;
mode->htotal = mode->hsync_end + tv_mode->hback_porch;
- mode->vdisplay = tv_mode->vdisplay;
+ mode->vdisplay = tv_mode->vdisplay * (100 - overscan) / 100;
mode->vsync_start = mode->vdisplay + tv_mode->vfront_porch;
mode->vsync_end = mode->vsync_start + tv_mode->vsync_len;
mode->vtotal = mode->vsync_end + tv_mode->vback_porch;
@@ -352,10 +358,10 @@ static int sun4i_tv_atomic_check(struct drm_encoder
*encoder,
return -EINVAL;
state->display_x_size = tv_mode->hdisplay;
- state->plane_x_offset = 0;
+ state->plane_x_offset = (tv_mode->hdisplay - mode->hdisplay) / 2;
state->display_y_size = tv_mode->vdisplay;
- state->plane_y_offset = 0;
+ state->plane_y_offset = (tv_mode->vdisplay - mode->vdisplay) / 2;
return 0;
}
@@ -404,7 +410,7 @@ static void sun4i_tv_mode_set(struct drm_encoder *encoder,
struct drm_display_mode tv_drm_mode = { 0 };
strcpy(tv_drm_mode.name, "TV");
- sun4i_tv_mode_to_drm_mode(tv_mode, &tv_drm_mode);
+ sun4i_tv_mode_to_drm_mode(tv_mode, &tv_drm_mode, 0);
drm_mode_set_crtcinfo(&tv_drm_mode, CRTC_INTERLACE_HALVE_V);
sun4i_tcon1_mode_set(tcon, &tv_drm_mode);
@@ -526,22 +532,28 @@ static int sun4i_tv_comp_get_modes(struct drm_connector
*connector)
int i;
for (i = 0; i < ARRAY_SIZE(tv_modes); i++) {
- struct drm_display_mode *mode;
const struct tv_mode *tv_mode = &tv_modes[i];
-
- mode = drm_mode_create(connector->dev);
- if (!mode) {
- DRM_ERROR("Failed to create a new display mode\n");
- return 0;
+ int j;
+
+ for (j = 0; j < 20; j += 5) {
+ struct drm_display_mode *mode =
drm_mode_create(connector->dev);
+ if (!mode) {
+ DRM_ERROR("Failed to create a new display
mode\n");
+ return 0;
+ }
+
+ if (j)
+ sprintf(mode->name, "%s%d", tv_mode->name,
+ j);
+ else
+ strcpy(mode->name, tv_mode->name);
+
+ sun4i_tv_mode_to_drm_mode(tv_mode, mode, j);
+ drm_mode_probed_add(connector, mode);
}
-
- strcpy(mode->name, tv_mode->name);
-
- sun4i_tv_mode_to_drm_mode(tv_mode, mode);
- drm_mode_probed_add(connector, mode);
}
- return i;
+ return i * 4;
}
static int sun4i_tv_comp_mode_valid(struct drm_connector *connector,
--
git-series 0.8.10
