From c04c5b1da18ec73eaabc7b8a8757545865426fc2 Mon Sep 17 00:00:00 2001 From: Francisco Jerez Date: Sat, 24 Jul 2010 17:42:20 +0200 Subject: [PATCH] drm/nouveau: Fix TV-out detection on unposted cards lacking a usable DCB table. Signed-off-by: Francisco Jerez Signed-off-by: Ben Skeggs --- drivers/gpu/drm/nouveau/nv04_display.c | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/drivers/gpu/drm/nouveau/nv04_display.c b/drivers/gpu/drm/nouveau/nv04_display.c index cd70bd827614..9e28cf772e3c 100644 --- a/drivers/gpu/drm/nouveau/nv04_display.c +++ b/drivers/gpu/drm/nouveau/nv04_display.c @@ -78,6 +78,14 @@ nv04_display_store_initial_head_owner(struct drm_device *dev) int nv04_display_early_init(struct drm_device *dev) { + /* Make the I2C buses accessible. */ + if (!nv_gf4_disp_arch(dev)) { + uint32_t pmc_enable = nv_rd32(dev, NV03_PMC_ENABLE); + + if (!(pmc_enable & 1)) + nv_wr32(dev, NV03_PMC_ENABLE, pmc_enable | 1); + } + /* Unlock the VGA CRTCs. */ NVLockVgaCrtcs(dev, false); -- 2.11.0