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path: root/drivers/gpu/drm/nouveau/nv50_display.c
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Diffstat (limited to 'drivers/gpu/drm/nouveau/nv50_display.c')
-rw-r--r--drivers/gpu/drm/nouveau/nv50_display.c36
1 files changed, 36 insertions, 0 deletions
diff --git a/drivers/gpu/drm/nouveau/nv50_display.c b/drivers/gpu/drm/nouveau/nv50_display.c
index 649db4c1b69..580a5d10be9 100644
--- a/drivers/gpu/drm/nouveau/nv50_display.c
+++ b/drivers/gpu/drm/nouveau/nv50_display.c
@@ -29,6 +29,7 @@
#include "nouveau_encoder.h"
#include "nouveau_connector.h"
#include "nouveau_fb.h"
+#include "nouveau_fbcon.h"
#include "drm_crtc_helper.h"
static void
@@ -783,6 +784,37 @@ ack:
}
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)
{
struct dcb_entry *dcbent;
@@ -805,6 +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);
@@ -945,6 +979,8 @@ nv50_display_irq_hotplug_bh(struct work_struct *work)
nv_wr32(dev, 0xe054, nv_rd32(dev, 0xe054));
if (dev_priv->chipset >= 0x90)
nv_wr32(dev, 0xe074, nv_rd32(dev, 0xe074));
+
+ drm_helper_hpd_irq_event(dev);
}
void