From a002feceb7852964af579ece784b0123869f1e3f Mon Sep 17 00:00:00 2001
From: Ben Skeggs <bskeggs@redhat.com>
Date: Thu, 4 Aug 2011 11:04:47 +1000
Subject: [PATCH] drm/nouveau/dp: pass in required datarate to link training
Not used currently, but it will be used in preference to pre-determined
lane/bandwidth numbers at a later point.
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
---
drivers/gpu/drm/nouveau/nouveau_dp.c | 2 +-
drivers/gpu/drm/nouveau/nouveau_drv.h | 2 +-
drivers/gpu/drm/nouveau/nouveau_encoder.h | 1 +
drivers/gpu/drm/nouveau/nv50_sor.c | 13 ++++++++-----
4 files changed, 11 insertions(+), 7 deletions(-)
diff --git a/drivers/gpu/drm/nouveau/nouveau_dp.c b/drivers/gpu/drm/nouveau/nouveau_dp.c
index ae1b6e00bd96..6a756a00d007 100644
--- a/drivers/gpu/drm/nouveau/nouveau_dp.c
+++ b/drivers/gpu/drm/nouveau/nouveau_dp.c
@@ -507,7 +507,7 @@ nouveau_dp_link_train_commit(struct drm_encoder *encoder, uint8_t *config)
}
bool
-nouveau_dp_link_train(struct drm_encoder *encoder)
+nouveau_dp_link_train(struct drm_encoder *encoder, u32 datarate)
{
struct drm_device *dev = encoder->dev;
struct drm_nouveau_private *dev_priv = dev->dev_private;
diff --git a/drivers/gpu/drm/nouveau/nouveau_drv.h b/drivers/gpu/drm/nouveau/nouveau_drv.h
index 3e9e7cc09a7d..8cca5ff3add9 100644
--- a/drivers/gpu/drm/nouveau/nouveau_drv.h
+++ b/drivers/gpu/drm/nouveau/nouveau_drv.h
@@ -1100,7 +1100,7 @@ int nouveau_ttm_mmap(struct file *, struct vm_area_struct *);
int nouveau_dp_auxch(struct nouveau_i2c_chan *auxch, int cmd, int addr,
uint8_t *data, int data_nr);
bool nouveau_dp_detect(struct drm_encoder *);
-bool nouveau_dp_link_train(struct drm_encoder *);
+bool nouveau_dp_link_train(struct drm_encoder *, u32 datarate);
void nouveau_dp_tu_update(struct drm_device *, int, int, u32, u32);
/* nv04_fb.c */
diff --git a/drivers/gpu/drm/nouveau/nouveau_encoder.h b/drivers/gpu/drm/nouveau/nouveau_encoder.h
index 70f0232558ff..fc5ee0d68573 100644
--- a/drivers/gpu/drm/nouveau/nouveau_encoder.h
+++ b/drivers/gpu/drm/nouveau/nouveau_encoder.h
@@ -53,6 +53,7 @@ struct nouveau_encoder {
int link_nr;
int link_bw;
bool enhanced_frame;
+ u32 datarate;
} dp;
};
};
diff --git a/drivers/gpu/drm/nouveau/nv50_sor.c b/drivers/gpu/drm/nouveau/nv50_sor.c
index f359f94626c2..2633aa8554eb 100644
--- a/drivers/gpu/drm/nouveau/nv50_sor.c
+++ b/drivers/gpu/drm/nouveau/nv50_sor.c
@@ -124,7 +124,7 @@ nv50_sor_dpms(struct drm_encoder *encoder, int mode)
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);
+ nouveau_dp_link_train(encoder, nv_encoder->dp.datarate);
} else {
u8 status = DP_SET_POWER_D3;
nouveau_dp_auxch(auxch, 8, DP_SET_POWER, &status, 1);
@@ -194,8 +194,6 @@ nv50_sor_mode_set(struct drm_encoder *encoder, struct drm_display_mode *mode,
NV_DEBUG_KMS(dev, "or %d type %d -> crtc %d\n",
nv_encoder->or, nv_encoder->dcb->type, crtc->index);
- nv50_sor_dpms(encoder, DRM_MODE_DPMS_ON);
-
switch (nv_encoder->dcb->type) {
case OUTPUT_TMDS:
if (nv_encoder->dcb->sorconf.link & 1) {
@@ -208,10 +206,13 @@ nv50_sor_mode_set(struct drm_encoder *encoder, struct drm_display_mode *mode,
break;
case OUTPUT_DP:
nv_connector = nouveau_encoder_connector_get(nv_encoder);
- if (nv_connector && nv_connector->base.display_info.bpc == 6)
+ if (nv_connector && nv_connector->base.display_info.bpc == 6) {
+ nv_encoder->dp.datarate = crtc->mode->clock * 18 / 8;
mode_ctl |= 0x00020000;
- else
+ } else {
+ nv_encoder->dp.datarate = crtc->mode->clock * 24 / 8;
mode_ctl |= 0x00050000;
+ }
if (nv_encoder->dcb->sorconf.link & 1)
mode_ctl |= 0x00000800;
@@ -233,6 +234,8 @@ nv50_sor_mode_set(struct drm_encoder *encoder, struct drm_display_mode *mode,
if (adjusted_mode->flags & DRM_MODE_FLAG_NVSYNC)
mode_ctl |= NV50_EVO_SOR_MODE_CTRL_NVSYNC;
+ nv50_sor_dpms(encoder, DRM_MODE_DPMS_ON);
+
ret = RING_SPACE(evo, 2);
if (ret) {
NV_ERROR(dev, "no space while connecting SOR\n");
--
2.34.1