From bf2c886a857dcf61f2354796a8858a230f2737fa Mon Sep 17 00:00:00 2001
From: Ben Skeggs <bskeggs@redhat.com>
Date: Wed, 21 Nov 2012 14:49:54 +1000
Subject: [PATCH] drm/nouveau/disp: add support for 10bpc over DisplayPort
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
---
drivers/gpu/drm/nouveau/core/engine/disp/nv50.c | 7 +++++--
drivers/gpu/drm/nouveau/core/engine/disp/nvd0.c | 9 ++++++---
drivers/gpu/drm/nouveau/nv50_display.c | 6 +++++-
3 files changed, 16 insertions(+), 6 deletions(-)
diff --git a/drivers/gpu/drm/nouveau/core/engine/disp/nv50.c b/drivers/gpu/drm/nouveau/core/engine/disp/nv50.c
index c9cfd02f94abe..c6f80055e988a 100644
--- a/drivers/gpu/drm/nouveau/core/engine/disp/nv50.c
+++ b/drivers/gpu/drm/nouveau/core/engine/disp/nv50.c
@@ -973,7 +973,6 @@ nv50_disp_intr_unk20_dp(struct nv50_disp_priv *priv,
const u32 soff = ( or * 0x800);
const u32 loff = (link * 0x080) + soff;
const u32 ctrl = nv_rd32(priv, 0x610794 + (or * 8));
- const u32 bits = ((ctrl & 0x000f0000) == 0x00020000) ? 18 : 24;
const u32 symbol = 100000;
u32 dpctrl = nv_rd32(priv, 0x61c10c + loff) & 0x0000f0000;
u32 clksor = nv_rd32(priv, 0x614300 + soff);
@@ -981,7 +980,7 @@ nv50_disp_intr_unk20_dp(struct nv50_disp_priv *priv,
int TU, VTUi, VTUf, VTUa;
u64 link_data_rate, link_ratio, unk;
u32 best_diff = 64 * symbol;
- u32 link_nr, link_bw, r;
+ u32 link_nr, link_bw, bits, r;
/* calculate packed data rate for each lane */
if (dpctrl > 0x00030000) link_nr = 4;
@@ -993,6 +992,10 @@ nv50_disp_intr_unk20_dp(struct nv50_disp_priv *priv,
else
link_bw = 162000;
+ if ((ctrl & 0xf0000) == 0x60000) bits = 30;
+ else if ((ctrl & 0xf0000) == 0x50000) bits = 24;
+ else bits = 18;
+
link_data_rate = (pclk * bits / 8) / link_nr;
/* calculate ratio of packed data rate to link symbol rate */
diff --git a/drivers/gpu/drm/nouveau/core/engine/disp/nvd0.c b/drivers/gpu/drm/nouveau/core/engine/disp/nvd0.c
index 24bcbc6a88bb2..9e38ebff5fb3f 100644
--- a/drivers/gpu/drm/nouveau/core/engine/disp/nvd0.c
+++ b/drivers/gpu/drm/nouveau/core/engine/disp/nvd0.c
@@ -711,7 +711,6 @@ nvd0_display_unk2_calc_tu(struct nv50_disp_priv *priv, int head, int or)
const u32 ctrl = nv_rd32(priv, 0x660200 + (or * 0x020));
const u32 conf = nv_rd32(priv, 0x660404 + (head * 0x300));
const u32 pclk = nv_rd32(priv, 0x660450 + (head * 0x300)) / 1000;
- const u32 bits = ((conf & 0x3c0) == 0x080) ? 18 : 24;
const u32 link = ((ctrl & 0xf00) == 0x800) ? 0 : 1;
const u32 hoff = (head * 0x800);
const u32 soff = ( or * 0x800);
@@ -720,10 +719,14 @@ nvd0_display_unk2_calc_tu(struct nv50_disp_priv *priv, int head, int or)
const u32 TU = 64;
u32 dpctrl = nv_rd32(priv, 0x61c10c + loff) & 0x000f0000;
u32 clksor = nv_rd32(priv, 0x612300 + soff);
- u32 datarate = (pclk * bits) / 8;
- u32 link_nr, link_bw;
+ u32 datarate, link_nr, link_bw, bits;
u64 ratio, value;
+ if ((conf & 0x3c0) == 0x180) bits = 30;
+ else if ((conf & 0x3c0) == 0x140) bits = 24;
+ else bits = 18;
+ datarate = (pclk * bits) / 8;
+
if (dpctrl > 0x00030000) link_nr = 4;
else if (dpctrl > 0x00010000) link_nr = 2;
else link_nr = 1;
diff --git a/drivers/gpu/drm/nouveau/nv50_display.c b/drivers/gpu/drm/nouveau/nv50_display.c
index 7c77b282d816c..b252dbe0f4e05 100644
--- a/drivers/gpu/drm/nouveau/nv50_display.c
+++ b/drivers/gpu/drm/nouveau/nv50_display.c
@@ -1791,9 +1791,13 @@ nv50_sor_mode_set(struct drm_encoder *encoder, struct drm_display_mode *umode,
if (nv_connector->base.display_info.bpc == 6) {
nv_encoder->dp.datarate = mode->clock * 18 / 8;
depth = 0x2;
- } else {
+ } else
+ if (nv_connector->base.display_info.bpc == 8) {
nv_encoder->dp.datarate = mode->clock * 24 / 8;
depth = 0x5;
+ } else {
+ nv_encoder->dp.datarate = mode->clock * 30 / 8;
+ depth = 0x6;
}
if (nv_encoder->dcb->sorconf.link & 1)
--
2.30.2