From afa3b4c37772f21b69980c155515927fdecd3a27 Mon Sep 17 00:00:00 2001
From: Ben Skeggs <bskeggs@redhat.com>
Date: Fri, 23 Apr 2010 08:21:48 +1000
Subject: [PATCH] drm/nv50: fix suspend/resume with DP outputs
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
---
drivers/gpu/drm/nouveau/nouveau_encoder.h | 2 ++
drivers/gpu/drm/nouveau/nouveau_reg.h | 1 +
drivers/gpu/drm/nouveau/nv50_display.c | 33 +++++++++++++++++++++++
drivers/gpu/drm/nouveau/nv50_sor.c | 15 +++++++----
4 files changed, 46 insertions(+), 5 deletions(-)
diff --git a/drivers/gpu/drm/nouveau/nouveau_encoder.h b/drivers/gpu/drm/nouveau/nouveau_encoder.h
index 9f28b94e479bd..e1df8209cd0f5 100644
--- a/drivers/gpu/drm/nouveau/nouveau_encoder.h
+++ b/drivers/gpu/drm/nouveau/nouveau_encoder.h
@@ -48,6 +48,8 @@ struct nouveau_encoder {
union {
struct {
int mc_unknown;
+ uint32_t unk0;
+ uint32_t unk1;
int dpcd_version;
int link_nr;
int link_bw;
diff --git a/drivers/gpu/drm/nouveau/nouveau_reg.h b/drivers/gpu/drm/nouveau/nouveau_reg.h
index aa9b310e41be0..6ca80a3fe70db 100644
--- a/drivers/gpu/drm/nouveau/nouveau_reg.h
+++ b/drivers/gpu/drm/nouveau/nouveau_reg.h
@@ -826,6 +826,7 @@
#define NV50_SOR_DP_CTRL_TRAINING_PATTERN_2 0x02000000
#define NV50_SOR_DP_UNK118(i,l) (0x0061c118 + (i) * 0x800 + (l) * 0x80)
#define NV50_SOR_DP_UNK120(i,l) (0x0061c120 + (i) * 0x800 + (l) * 0x80)
+#define NV50_SOR_DP_UNK128(i,l) (0x0061c128 + (i) * 0x800 + (l) * 0x80)
#define NV50_SOR_DP_UNK130(i,l) (0x0061c130 + (i) * 0x800 + (l) * 0x80)
#define NV50_PDISPLAY_USER(i) ((i) * 0x1000 + 0x00640000)
diff --git a/drivers/gpu/drm/nouveau/nv50_display.c b/drivers/gpu/drm/nouveau/nv50_display.c
index 34156b69594f7..580a5d10be932 100644
--- a/drivers/gpu/drm/nouveau/nv50_display.c
+++ b/drivers/gpu/drm/nouveau/nv50_display.c
@@ -783,6 +783,37 @@ nv50_display_unk10_handler(struct drm_device *dev)
nv_wr32(dev, 0x610030, 0x80000000);
}
+static void
+nv50_display_unk20_dp_hack(struct drm_device *dev, struct dcb_entry *dcb)
+{
+ int or = ffs(dcb->or) - 1, link = !(dcb->dpconf.sor.link & 1);
+ struct drm_encoder *encoder;
+ uint32_t tmp, unk0 = 0, unk1 = 0;
+
+ if (dcb->type != OUTPUT_DP)
+ return;
+
+ list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) {
+ struct nouveau_encoder *nv_encoder = nouveau_encoder(encoder);
+
+ if (nv_encoder->dcb == dcb) {
+ unk0 = nv_encoder->dp.unk0;
+ unk1 = nv_encoder->dp.unk1;
+ break;
+ }
+ }
+
+ if (unk0 || unk1) {
+ tmp = nv_rd32(dev, NV50_SOR_DP_CTRL(or, link));
+ tmp &= 0xfffffe03;
+ nv_wr32(dev, NV50_SOR_DP_CTRL(or, link), tmp | unk0);
+
+ tmp = nv_rd32(dev, NV50_SOR_DP_UNK128(or, link));
+ tmp &= 0xfef080c0;
+ nv_wr32(dev, NV50_SOR_DP_UNK128(or, link), tmp | unk1);
+ }
+}
+
static void
nv50_display_unk20_handler(struct drm_device *dev)
{
@@ -806,6 +837,8 @@ nv50_display_unk20_handler(struct drm_device *dev)
nouveau_bios_run_display_table(dev, dcbent, script, pclk);
+ nv50_display_unk20_dp_hack(dev, dcbent);
+
tmp = nv_rd32(dev, NV50_PDISPLAY_CRTC_CLK_CTRL2(head));
tmp &= ~0x000000f;
nv_wr32(dev, NV50_PDISPLAY_CRTC_CLK_CTRL2(head), tmp);
diff --git a/drivers/gpu/drm/nouveau/nv50_sor.c b/drivers/gpu/drm/nouveau/nv50_sor.c
index 0c68698f23df7..b11eaf9c5c7cd 100644
--- a/drivers/gpu/drm/nouveau/nv50_sor.c
+++ b/drivers/gpu/drm/nouveau/nv50_sor.c
@@ -321,18 +321,23 @@ nv50_sor_create(struct drm_device *dev, struct dcb_entry *entry)
encoder->possible_clones = 0;
if (nv_encoder->dcb->type == OUTPUT_DP) {
- uint32_t mc, or = nv_encoder->or;
+ int or = nv_encoder->or, link = !(entry->dpconf.sor.link & 1);
+ uint32_t tmp;
if (dev_priv->chipset < 0x90 ||
dev_priv->chipset == 0x92 || dev_priv->chipset == 0xa0)
- mc = nv_rd32(dev, NV50_PDISPLAY_SOR_MODE_CTRL_C(or));
+ tmp = nv_rd32(dev, NV50_PDISPLAY_SOR_MODE_CTRL_C(or));
else
- mc = nv_rd32(dev, NV90_PDISPLAY_SOR_MODE_CTRL_C(or));
+ tmp = nv_rd32(dev, NV90_PDISPLAY_SOR_MODE_CTRL_C(or));
- switch ((mc & 0x00000f00) >> 8) {
+ switch ((tmp & 0x00000f00) >> 8) {
case 8:
case 9:
- nv_encoder->dp.mc_unknown = (mc & 0x000f0000) >> 16;
+ nv_encoder->dp.mc_unknown = (tmp & 0x000f0000) >> 16;
+ tmp = nv_rd32(dev, NV50_SOR_DP_CTRL(or, link));
+ nv_encoder->dp.unk0 = tmp & 0x000001fc;
+ tmp = nv_rd32(dev, NV50_SOR_DP_UNK128(or, link));
+ nv_encoder->dp.unk1 = tmp & 0x010f7f3f;
break;
default:
break;
--
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