From 1f403d9cca359531e16bc685ed5d619c77762004 Mon Sep 17 00:00:00 2001
From: Ben Skeggs <bskeggs@redhat.com>
Date: Tue, 6 Jul 2010 11:20:17 +1000
Subject: [PATCH] drm/nv50: set DP display power state during DPMS
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
---
drivers/gpu/drm/nouveau/nv50_sor.c | 18 ++++++++++++++++--
1 file changed, 16 insertions(+), 2 deletions(-)
diff --git a/drivers/gpu/drm/nouveau/nv50_sor.c b/drivers/gpu/drm/nouveau/nv50_sor.c
index 45a617df6e39..bcd4cf84a7e6 100644
--- a/drivers/gpu/drm/nouveau/nv50_sor.c
+++ b/drivers/gpu/drm/nouveau/nv50_sor.c
@@ -115,8 +115,22 @@ nv50_sor_dpms(struct drm_encoder *encoder, int mode)
nv_rd32(dev, NV50_PDISPLAY_SOR_DPMS_STATE(or)));
}
- if (nv_encoder->dcb->type == OUTPUT_DP && mode == DRM_MODE_DPMS_ON)
- nouveau_dp_link_train(encoder);
+ if (nv_encoder->dcb->type == OUTPUT_DP) {
+ struct nouveau_i2c_chan *auxch;
+
+ auxch = nouveau_i2c_find(dev, nv_encoder->dcb->i2c_index);
+ if (!auxch)
+ return;
+
+ if (mode == DRM_MODE_DPMS_ON) {
+ u8 status = DP_SET_POWER_D0;
+ nouveau_dp_auxch(auxch, 8, DP_SET_POWER, &status, 1);
+ nouveau_dp_link_train(encoder);
+ } else {
+ u8 status = DP_SET_POWER_D3;
+ nouveau_dp_auxch(auxch, 8, DP_SET_POWER, &status, 1);
+ }
+ }
}
static void
--
GitLab