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| author | Rahul Sharma <rahul.sharma@samsung.com> | 2014-06-23 11:02:24 +0530 |
|---|---|---|
| committer | Inki Dae <daeinki@gmail.com> | 2014-06-24 23:44:49 +0900 |
| commit | d74ed93784ca3af005b0f5f1c44d972175bba4ad (patch) | |
| tree | 5a778d1563362a3917219eb4f8f23ab80877757b | |
| parent | 5c0f4829e187f4d43f5ea5cd72cec343ddcdf594 (diff) | |
| download | linux-d74ed93784ca3af005b0f5f1c44d972175bba4ad.tar.gz | |
drm/exynos: soft reset mixer before reconfigure after power-on
Mixer soft reset is a recommended step before reconfiguring
the mixer after power on. Mixer looses the previous state of
DMAs if soft reset. This is the recommendation from the
hardware team.
Signed-off-by: Rahul Sharma <rahul.sharma@samsung.com>
Signed-off-by: Inki Dae <inki.dae@samsung.com>
| -rw-r--r-- | drivers/gpu/drm/exynos/exynos_mixer.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/gpu/drm/exynos/exynos_mixer.c b/drivers/gpu/drm/exynos/exynos_mixer.c index 6773b03fd92108..6f1858187e28e0 100644 --- a/drivers/gpu/drm/exynos/exynos_mixer.c +++ b/drivers/gpu/drm/exynos/exynos_mixer.c @@ -1085,6 +1085,8 @@ static void mixer_poweron(struct exynos_drm_manager *mgr) ctx->powered = true; mutex_unlock(&ctx->mixer_mutex); + mixer_reg_writemask(res, MXR_STATUS, ~0, MXR_STATUS_SOFT_RESET); + mixer_reg_write(res, MXR_INT_EN, ctx->int_en); mixer_win_reset(ctx); |