diff options
Diffstat (limited to 'drivers/video/omap2/dss/dispc.c')
| -rw-r--r-- | drivers/video/omap2/dss/dispc.c | 22 |
1 files changed, 20 insertions, 2 deletions
diff --git a/drivers/video/omap2/dss/dispc.c b/drivers/video/omap2/dss/dispc.c index ba907bd60099..a75972250a20 100644 --- a/drivers/video/omap2/dss/dispc.c +++ b/drivers/video/omap2/dss/dispc.c @@ -909,7 +909,7 @@ static void dispc_configure_burst_sizes(void) dispc_ovl_set_burst_size(i, burst_size); } -u32 dispc_ovl_get_burst_size(enum omap_plane plane) +static u32 dispc_ovl_get_burst_size(enum omap_plane plane) { unsigned unit = dss_feat_get_burst_size_unit(); /* burst multiplier is always x8 (see dispc_configure_burst_sizes()) */ @@ -1018,7 +1018,7 @@ static void dispc_read_plane_fifo_sizes(void) } } -u32 dispc_ovl_get_fifo_size(enum omap_plane plane) +static u32 dispc_ovl_get_fifo_size(enum omap_plane plane) { return dispc.fifo_size[plane]; } @@ -1063,6 +1063,24 @@ void dispc_enable_fifomerge(bool enable) REG_FLD_MOD(DISPC_CONFIG, enable ? 1 : 0, 14, 14); } +void dispc_ovl_compute_fifo_thresholds(enum omap_plane plane, + u32 *fifo_low, u32 *fifo_high, bool use_fifomerge) +{ + /* + * All sizes are in bytes. Both the buffer and burst are made of + * buffer_units, and the fifo thresholds must be buffer_unit aligned. + */ + + unsigned buf_unit = dss_feat_get_buffer_size_unit(); + unsigned fifo_size, burst_size; + + burst_size = dispc_ovl_get_burst_size(plane); + fifo_size = dispc_ovl_get_fifo_size(plane); + + *fifo_low = fifo_size - burst_size; + *fifo_high = fifo_size - buf_unit; +} + static void dispc_ovl_set_fir(enum omap_plane plane, int hinc, int vinc, enum omap_color_component color_comp) |