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-rw-r--r--drivers/gpu/drm/nouveau/nouveau_dp.c111
-rw-r--r--drivers/gpu/drm/nouveau/nouveau_drv.h1
-rw-r--r--drivers/gpu/drm/nouveau/nouveau_encoder.h3
-rw-r--r--drivers/gpu/drm/nouveau/nouveau_reg.h2
-rw-r--r--drivers/gpu/drm/nouveau/nv50_display.c39
-rw-r--r--drivers/gpu/drm/nouveau/nv50_sor.c33
6 files changed, 126 insertions, 63 deletions
diff --git a/drivers/gpu/drm/nouveau/nouveau_dp.c b/drivers/gpu/drm/nouveau/nouveau_dp.c
index f8ebd09ee3a..ae1b6e00bd9 100644
--- a/drivers/gpu/drm/nouveau/nouveau_dp.c
+++ b/drivers/gpu/drm/nouveau/nouveau_dp.c
@@ -194,6 +194,116 @@ auxch_wr(struct drm_encoder *encoder, int address, uint8_t *buf, int size)
return ret;
}
+static u32
+dp_link_bw_get(struct drm_device *dev, int or, int link)
+{
+ u32 ctrl = nv_rd32(dev, 0x614300 + (or * 0x800));
+ if (!(ctrl & 0x000c0000))
+ return 162000;
+ return 270000;
+}
+
+static int
+dp_lane_count_get(struct drm_device *dev, int or, int link)
+{
+ u32 ctrl = nv_rd32(dev, NV50_SOR_DP_CTRL(or, link));
+ switch (ctrl & 0x000f0000) {
+ case 0x00010000: return 1;
+ case 0x00030000: return 2;
+ default:
+ return 4;
+ }
+}
+
+void
+nouveau_dp_tu_update(struct drm_device *dev, int or, int link, u32 clk, u32 bpp)
+{
+ const u32 symbol = 100000;
+ int bestTU = 0, bestVTUi = 0, bestVTUf = 0, bestVTUa = 0;
+ int TU, VTUi, VTUf, VTUa;
+ u64 link_data_rate, link_ratio, unk;
+ u32 best_diff = 64 * symbol;
+ u32 link_nr, link_bw, r;
+
+ /* calculate packed data rate for each lane */
+ link_nr = dp_lane_count_get(dev, or, link);
+ link_data_rate = (clk * bpp / 8) / link_nr;
+
+ /* calculate ratio of packed data rate to link symbol rate */
+ link_bw = dp_link_bw_get(dev, or, link);
+ link_ratio = link_data_rate * symbol;
+ r = do_div(link_ratio, link_bw);
+
+ for (TU = 64; TU >= 32; TU--) {
+ /* calculate average number of valid symbols in each TU */
+ u32 tu_valid = link_ratio * TU;
+ u32 calc, diff;
+
+ /* find a hw representation for the fraction.. */
+ VTUi = tu_valid / symbol;
+ calc = VTUi * symbol;
+ diff = tu_valid - calc;
+ if (diff) {
+ if (diff >= (symbol / 2)) {
+ VTUf = symbol / (symbol - diff);
+ if (symbol - (VTUf * diff))
+ VTUf++;
+
+ if (VTUf <= 15) {
+ VTUa = 1;
+ calc += symbol - (symbol / VTUf);
+ } else {
+ VTUa = 0;
+ VTUf = 1;
+ calc += symbol;
+ }
+ } else {
+ VTUa = 0;
+ VTUf = min((int)(symbol / diff), 15);
+ calc += symbol / VTUf;
+ }
+
+ diff = calc - tu_valid;
+ } else {
+ /* no remainder, but the hw doesn't like the fractional
+ * part to be zero. decrement the integer part and
+ * have the fraction add a whole symbol back
+ */
+ VTUa = 0;
+ VTUf = 1;
+ VTUi--;
+ }
+
+ if (diff < best_diff) {
+ best_diff = diff;
+ bestTU = TU;
+ bestVTUa = VTUa;
+ bestVTUf = VTUf;
+ bestVTUi = VTUi;
+ if (diff == 0)
+ break;
+ }
+ }
+
+ if (!bestTU) {
+ NV_ERROR(dev, "DP: unable to find suitable config\n");
+ return;
+ }
+
+ /* XXX close to vbios numbers, but not right */
+ unk = (symbol - link_ratio) * bestTU;
+ unk *= link_ratio;
+ r = do_div(unk, symbol);
+ r = do_div(unk, symbol);
+ unk += 6;
+
+ nv_mask(dev, NV50_SOR_DP_CTRL(or, link), 0x000001fc, bestTU << 2);
+ nv_mask(dev, NV50_SOR_DP_SCFG(or, link), 0x010f7f3f, bestVTUa << 24 |
+ bestVTUf << 16 |
+ bestVTUi << 8 |
+ unk);
+}
+
static int
nouveau_dp_lane_count_set(struct drm_encoder *encoder, uint8_t cmd)
{
@@ -617,7 +727,6 @@ static int
nouveau_dp_i2c_xfer(struct i2c_adapter *adap, struct i2c_msg *msgs, int num)
{
struct nouveau_i2c_chan *auxch = (struct nouveau_i2c_chan *)adap;
- struct drm_device *dev = auxch->dev;
struct i2c_msg *msg = msgs;
int ret, mcnt = num;
diff --git a/drivers/gpu/drm/nouveau/nouveau_drv.h b/drivers/gpu/drm/nouveau/nouveau_drv.h
index bc035c4f42a..ee0f0d129d3 100644
--- a/drivers/gpu/drm/nouveau/nouveau_drv.h
+++ b/drivers/gpu/drm/nouveau/nouveau_drv.h
@@ -1101,6 +1101,7 @@ 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 *);
+void nouveau_dp_tu_update(struct drm_device *, int, int, u32, u32);
/* nv04_fb.c */
extern int nv04_fb_init(struct drm_device *);
diff --git a/drivers/gpu/drm/nouveau/nouveau_encoder.h b/drivers/gpu/drm/nouveau/nouveau_encoder.h
index ae69b61d93d..2bb316d2421 100644
--- a/drivers/gpu/drm/nouveau/nouveau_encoder.h
+++ b/drivers/gpu/drm/nouveau/nouveau_encoder.h
@@ -49,9 +49,6 @@ 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 f18cdfc3400..d9632ae38c6 100644
--- a/drivers/gpu/drm/nouveau/nouveau_reg.h
+++ b/drivers/gpu/drm/nouveau/nouveau_reg.h
@@ -843,7 +843,7 @@
#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_SCFG(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 8260303c2fc..d23ca00e7d6 100644
--- a/drivers/gpu/drm/nouveau/nv50_display.c
+++ b/drivers/gpu/drm/nouveau/nv50_display.c
@@ -702,37 +702,6 @@ 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 drm_nouveau_private *dev_priv = dev->dev_private;
@@ -830,7 +799,13 @@ nv50_display_unk20_handler(struct drm_device *dev)
script = nv50_display_script_select(dev, dcb, mc, pclk);
nouveau_bios_run_display_table(dev, script, pclk, dcb, -1);
- nv50_display_unk20_dp_hack(dev, dcb);
+ if (type == OUTPUT_DP) {
+ int link = !(dcb->dpconf.sor.link & 1);
+ if ((mc & 0x000f0000) == 0x00020000)
+ nouveau_dp_tu_update(dev, or, link, pclk, 18);
+ else
+ nouveau_dp_tu_update(dev, or, link, pclk, 24);
+ }
if (dcb->type != OUTPUT_ANALOG) {
tmp = nv_rd32(dev, NV50_PDISPLAY_SOR_CLK_CTRL2(or));
diff --git a/drivers/gpu/drm/nouveau/nv50_sor.c b/drivers/gpu/drm/nouveau/nv50_sor.c
index ffe8b483b7b..f359f94626c 100644
--- a/drivers/gpu/drm/nouveau/nv50_sor.c
+++ b/drivers/gpu/drm/nouveau/nv50_sor.c
@@ -187,6 +187,7 @@ nv50_sor_mode_set(struct drm_encoder *encoder, struct drm_display_mode *mode,
struct nouveau_encoder *nv_encoder = nouveau_encoder(encoder);
struct drm_device *dev = encoder->dev;
struct nouveau_crtc *crtc = nouveau_crtc(encoder->crtc);
+ struct nouveau_connector *nv_connector;
uint32_t mode_ctl = 0;
int ret;
@@ -206,7 +207,12 @@ nv50_sor_mode_set(struct drm_encoder *encoder, struct drm_display_mode *mode,
mode_ctl = 0x0200;
break;
case OUTPUT_DP:
- mode_ctl |= (nv_encoder->dp.mc_unknown << 16);
+ nv_connector = nouveau_encoder_connector_get(nv_encoder);
+ if (nv_connector && nv_connector->base.display_info.bpc == 6)
+ mode_ctl |= 0x00020000;
+ else
+ mode_ctl |= 0x00050000;
+
if (nv_encoder->dcb->sorconf.link & 1)
mode_ctl |= 0x00000800;
else
@@ -313,31 +319,6 @@ nv50_sor_create(struct drm_connector *connector, struct dcb_entry *entry)
encoder->possible_crtcs = entry->heads;
encoder->possible_clones = 0;
- if (nv_encoder->dcb->type == OUTPUT_DP) {
- int or = nv_encoder->or, link = !(entry->dpconf.sor.link & 1);
- uint32_t tmp;
-
- tmp = nv_rd32(dev, 0x61c700 + (or * 0x800));
- if (!tmp)
- tmp = nv_rd32(dev, 0x610798 + (or * 8));
-
- switch ((tmp & 0x00000f00) >> 8) {
- case 8:
- case 9:
- 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;
- }
-
- if (!nv_encoder->dp.mc_unknown)
- nv_encoder->dp.mc_unknown = 5;
- }
-
drm_mode_connector_attach_encoder(connector, encoder);
return 0;
}
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2024-11-29 02:32:40 +0000