diff options
Diffstat (limited to 'drivers/video/omap2/dss/dispc.c')
| -rw-r--r-- | drivers/video/omap2/dss/dispc.c | 40 |
1 files changed, 40 insertions, 0 deletions
diff --git a/drivers/video/omap2/dss/dispc.c b/drivers/video/omap2/dss/dispc.c index 80314bd3427d..67548839ff51 100644 --- a/drivers/video/omap2/dss/dispc.c +++ b/drivers/video/omap2/dss/dispc.c @@ -2320,6 +2320,46 @@ static int dispc_ovl_calc_scaling(unsigned long pclk, unsigned long lclk, return 0; } +int dispc_ovl_check(enum omap_plane plane, enum omap_channel channel, + const struct omap_overlay_info *oi, + const struct omap_video_timings *timings, + int *x_predecim, int *y_predecim) +{ + enum omap_overlay_caps caps = dss_feat_get_overlay_caps(plane); + bool five_taps = true; + bool fieldmode = 0; + u16 in_height = oi->height; + u16 in_width = oi->width; + bool ilace = timings->interlace; + u16 out_width, out_height; + int pos_x = oi->pos_x; + unsigned long pclk = dispc_mgr_pclk_rate(channel); + unsigned long lclk = dispc_mgr_lclk_rate(channel); + + out_width = oi->out_width == 0 ? oi->width : oi->out_width; + out_height = oi->out_height == 0 ? oi->height : oi->out_height; + + if (ilace && oi->height == out_height) + fieldmode = 1; + + if (ilace) { + if (fieldmode) + in_height /= 2; + out_height /= 2; + + DSSDBG("adjusting for ilace: height %d, out_height %d\n", + in_height, out_height); + } + + if (!dss_feat_color_mode_supported(plane, oi->color_mode)) + return -EINVAL; + + return dispc_ovl_calc_scaling(pclk, lclk, caps, timings, in_width, + in_height, out_width, out_height, oi->color_mode, + &five_taps, x_predecim, y_predecim, pos_x, + oi->rotation_type, false); +} + static int dispc_ovl_setup_common(enum omap_plane plane, enum omap_overlay_caps caps, u32 paddr, u32 p_uv_addr, u16 screen_width, int pos_x, int pos_y, u16 width, u16 height, |