diff options
Diffstat (limited to 'drivers/gpu/drm/vc4/vc4_txp.c')
| -rw-r--r-- | drivers/gpu/drm/vc4/vc4_txp.c | 11 |
1 files changed, 9 insertions, 2 deletions
diff --git a/drivers/gpu/drm/vc4/vc4_txp.c b/drivers/gpu/drm/vc4/vc4_txp.c index 9809ca3e2945..3579d487402e 100644 --- a/drivers/gpu/drm/vc4/vc4_txp.c +++ b/drivers/gpu/drm/vc4/vc4_txp.c @@ -298,12 +298,18 @@ static void vc4_txp_connector_atomic_commit(struct drm_connector *conn, if (WARN_ON(i == ARRAY_SIZE(drm_fmts))) return; - ctrl = TXP_GO | TXP_VSTART_AT_EOF | TXP_EI | + ctrl = TXP_GO | TXP_EI | VC4_SET_FIELD(0xf, TXP_BYTE_ENABLE) | VC4_SET_FIELD(txp_fmts[i], TXP_FORMAT); if (fb->format->has_alpha) ctrl |= TXP_ALPHA_ENABLE; + else + /* + * If TXP_ALPHA_ENABLE isn't set and TXP_ALPHA_INVERT is, the + * hardware will force the output padding to be 0xff. + */ + ctrl |= TXP_ALPHA_INVERT; gem = drm_fb_cma_get_gem_obj(fb, 0); TXP_WRITE(TXP_DST_PTR, gem->paddr + fb->offsets[0]); @@ -497,7 +503,8 @@ static int vc4_txp_bind(struct device *dev, struct device *master, void *data) ret = drm_writeback_connector_init(drm, &txp->connector, &vc4_txp_connector_funcs, &vc4_txp_encoder_helper_funcs, - drm_fmts, ARRAY_SIZE(drm_fmts)); + drm_fmts, ARRAY_SIZE(drm_fmts), + 0); if (ret) return ret; |