diff options
Diffstat (limited to 'drivers/video/tegra/dc/window.c')
| -rw-r--r-- | drivers/video/tegra/dc/window.c | 20 |
1 files changed, 17 insertions, 3 deletions
diff --git a/drivers/video/tegra/dc/window.c b/drivers/video/tegra/dc/window.c index 0b4350d49418..cd91fab428ed 100644 --- a/drivers/video/tegra/dc/window.c +++ b/drivers/video/tegra/dc/window.c @@ -24,6 +24,7 @@ #include "dc_priv.h" static int no_vsync; +static atomic_t frame_end_ref = ATOMIC_INIT(0); module_param_named(no_vsync, no_vsync, int, S_IRUGO | S_IWUSR); @@ -40,6 +41,17 @@ static bool tegra_dc_windows_are_clean(struct tegra_dc_win *windows[], return true; } +int tegra_dc_config_frame_end_intr(struct tegra_dc *dc, bool enable) +{ + tegra_dc_writel(dc, FRAME_END_INT, DC_CMD_INT_STATUS); + if (enable) { + atomic_inc(&frame_end_ref); + tegra_dc_unmask_interrupt(dc, FRAME_END_INT); + } else if (!atomic_dec_return(&frame_end_ref)) + tegra_dc_mask_interrupt(dc, FRAME_END_INT); + return 0; +} + static int get_topmost_window(u32 *depths, unsigned long *wins) { int idx, best = -1; @@ -406,8 +418,9 @@ int tegra_dc_update_windows(struct tegra_dc_win *windows[], int n) FRAME_END_INT | V_BLANK_INT | ALL_UF_INT); } else { clear_bit(V_BLANK_FLIP, &dc->vblank_ref_count); - tegra_dc_mask_interrupt(dc, - FRAME_END_INT | V_BLANK_INT | ALL_UF_INT); + tegra_dc_mask_interrupt(dc, V_BLANK_INT | ALL_UF_INT); + if (!atomic_read(&frame_end_ref)) + tegra_dc_mask_interrupt(dc, FRAME_END_INT); } if (dc->out->flags & TEGRA_DC_OUT_ONE_SHOT_MODE) @@ -456,7 +469,8 @@ void tegra_dc_trigger_windows(struct tegra_dc *dc) } if (!dirty) { - if (!(dc->out->flags & TEGRA_DC_OUT_ONE_SHOT_MODE)) + if (!(dc->out->flags & TEGRA_DC_OUT_ONE_SHOT_MODE) + && !atomic_read(&frame_end_ref)) tegra_dc_mask_interrupt(dc, FRAME_END_INT); } |