From e75182f68b7b3a073e33b89ee4c1688160755930 Mon Sep 17 00:00:00 2001 From: Ilia Mirkin Date: Sat, 30 Dec 2017 23:35:28 -0500 Subject: [PATCH] drm/nouveau/kms/nv50: use "low res" lut for indexed mode This is what was done prior to the big refactor in kernel 3.8, and what was done by xf86-video-nv. Experimentally, it seems like there's some sort of issue with the high-res lut to be used there. Tested on G92. This ends up mattering because fbcon/fbdev chooses the C8 fb format for low-vram systems, which can occur with some IGP-based configurations with little "stolen" vram. Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=80675 Signed-off-by: Ilia Mirkin Signed-off-by: Ben Skeggs --- drivers/gpu/drm/nouveau/nv50_display.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) diff --git a/drivers/gpu/drm/nouveau/nv50_display.c b/drivers/gpu/drm/nouveau/nv50_display.c index 2293b8ff56c6..f4daf8c55de1 100644 --- a/drivers/gpu/drm/nouveau/nv50_display.c +++ b/drivers/gpu/drm/nouveau/nv50_display.c @@ -1805,12 +1805,14 @@ nv50_head_lut_set(struct nv50_head *head, struct nv50_head_atom *asyh) if ((push = evo_wait(core, 7))) { if (core->base.user.oclass < G82_DISP_CORE_CHANNEL_DMA) { evo_mthd(push, 0x0840 + (head->base.index * 0x400), 2); - evo_data(push, 0xc0000000); + evo_data(push, asyh->base.depth == 8 ? + 0x80000000 : 0xc0000000); evo_data(push, asyh->lut.offset >> 8); } else if (core->base.user.oclass < GF110_DISP_CORE_CHANNEL_DMA) { evo_mthd(push, 0x0840 + (head->base.index * 0x400), 2); - evo_data(push, 0xc0000000); + evo_data(push, asyh->base.depth == 8 ? + 0x80000000 : 0xc0000000); evo_data(push, asyh->lut.offset >> 8); evo_mthd(push, 0x085c + (head->base.index * 0x400), 1); evo_data(push, asyh->lut.handle);