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authorBen Skeggs <bskeggs@redhat.com>2012-03-11 01:28:48 +1000
committerBen Skeggs <bskeggs@redhat.com>2012-03-13 17:15:04 +1000
commit6e83fda2c055f17780b2feef404f06803a49a261 (patch)
treed736720740ef69addd8911060629d987d1822705 /drivers/gpu/drm/nouveau
parentf14d9a4dda65439d74326694db727c6d2a5df0ce (diff)
drm/nvd0/disp: initial implementation of displayport
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
Diffstat (limited to 'drivers/gpu/drm/nouveau')
-rw-r--r--drivers/gpu/drm/nouveau/nouveau_dp.c6
-rw-r--r--drivers/gpu/drm/nouveau/nvd0_display.c169
2 files changed, 171 insertions, 4 deletions
diff --git a/drivers/gpu/drm/nouveau/nouveau_dp.c b/drivers/gpu/drm/nouveau/nouveau_dp.c
index 7be4e06e8438..b3644651d89b 100644
--- a/drivers/gpu/drm/nouveau/nouveau_dp.c
+++ b/drivers/gpu/drm/nouveau/nouveau_dp.c
@@ -364,10 +364,8 @@ dp_set_downspread(struct drm_device *dev, struct dp_state *dp, bool enable)
u8 *entry, *table = nouveau_dp_bios_data(dev, dp->dcb, &entry);
if (table) {
if (table[0] >= 0x20 && table[0] <= 0x30) {
- if (enable)
- script = ROM16(entry[12]);
- else
- script = ROM16(entry[14]);
+ if (enable) script = ROM16(entry[12]);
+ else script = ROM16(entry[14]);
}
}
diff --git a/drivers/gpu/drm/nouveau/nvd0_display.c b/drivers/gpu/drm/nouveau/nvd0_display.c
index 296f205249fc..1723733ad9fa 100644
--- a/drivers/gpu/drm/nouveau/nvd0_display.c
+++ b/drivers/gpu/drm/nouveau/nvd0_display.c
@@ -1183,6 +1183,143 @@ nvd0_hdmi_disconnect(struct drm_encoder *encoder)
/******************************************************************************
* SOR
*****************************************************************************/
+static inline u32
+nvd0_sor_dp_lane_map(struct drm_device *dev, struct dcb_entry *dcb, u8 lane)
+{
+ static const u8 nvd0[] = { 16, 8, 0, 24 };
+ return nvd0[lane];
+}
+
+static void
+nvd0_sor_dp_train_set(struct drm_device *dev, struct dcb_entry *dcb, u8 pattern)
+{
+ const u32 or = ffs(dcb->or) - 1, link = !(dcb->sorconf.link & 1);
+ const u32 loff = (or * 0x800) + (link * 0x80);
+ nv_mask(dev, 0x61c110 + loff, 0x0f0f0f0f, 0x01010101 * pattern);
+}
+
+static void
+nvd0_sor_dp_train_adj(struct drm_device *dev, struct dcb_entry *dcb,
+ u8 lane, u8 swing, u8 preem)
+{
+ const u32 or = ffs(dcb->or) - 1, link = !(dcb->sorconf.link & 1);
+ const u32 loff = (or * 0x800) + (link * 0x80);
+ u32 shift = nvd0_sor_dp_lane_map(dev, dcb, lane);
+ u32 mask = 0x000000ff << shift;
+ u8 *table, *entry, *config = NULL;
+
+ switch (swing) {
+ case 0: preem += 0; break;
+ case 1: preem += 4; break;
+ case 2: preem += 7; break;
+ case 3: preem += 9; break;
+ }
+
+ table = nouveau_dp_bios_data(dev, dcb, &entry);
+ if (table) {
+ if (table[0] == 0x30) {
+ config = entry + table[4];
+ config += table[5] * preem;
+ }
+ }
+
+ if (!config) {
+ NV_ERROR(dev, "PDISP: unsupported DP table for chipset\n");
+ return;
+ }
+
+ nv_mask(dev, 0x61c118 + loff, mask, config[1] << shift);
+ nv_mask(dev, 0x61c120 + loff, mask, config[2] << shift);
+ nv_mask(dev, 0x61c130 + loff, 0x0000ff00, config[3] << 8);
+ nv_mask(dev, 0x61c13c + loff, 0x00000000, 0x00000000);
+}
+
+static void
+nvd0_sor_dp_link_set(struct drm_device *dev, struct dcb_entry *dcb, int crtc,
+ int link_nr, u32 link_bw, bool enhframe)
+{
+ const u32 or = ffs(dcb->or) - 1, link = !(dcb->sorconf.link & 1);
+ const u32 loff = (or * 0x800) + (link * 0x80);
+ const u32 soff = (or * 0x800);
+ u32 dpctrl = nv_rd32(dev, 0x61c10c + loff) & ~0x001f4000;
+ u32 clksor = nv_rd32(dev, 0x612300 + soff) & ~0x007c0000;
+ u32 script = 0x0000, lane_mask = 0;
+ u8 *table, *entry;
+ int i;
+
+ link_bw /= 27000;
+
+ table = nouveau_dp_bios_data(dev, dcb, &entry);
+ if (table) {
+ if (table[0] == 0x30) entry = ROMPTR(dev, entry[10]);
+ else entry = NULL;
+
+ while (entry) {
+ if (entry[0] >= link_bw)
+ break;
+ entry += 3;
+ }
+
+ nouveau_bios_run_init_table(dev, script, dcb, crtc);
+ }
+
+ clksor |= link_bw << 18;
+ dpctrl |= ((1 << link_nr) - 1) << 16;
+ if (enhframe)
+ dpctrl |= 0x00004000;
+
+ for (i = 0; i < link_nr; i++)
+ lane_mask |= 1 << (nvd0_sor_dp_lane_map(dev, dcb, i) >> 3);
+
+ nv_wr32(dev, 0x612300 + soff, clksor);
+ nv_wr32(dev, 0x61c10c + loff, dpctrl);
+ nv_mask(dev, 0x61c130 + loff, 0x0000000f, lane_mask);
+}
+
+static void
+nvd0_sor_dp_link_get(struct drm_device *dev, struct dcb_entry *dcb,
+ u32 *link_nr, u32 *link_bw)
+{
+ const u32 or = ffs(dcb->or) - 1, link = !(dcb->sorconf.link & 1);
+ const u32 loff = (or * 0x800) + (link * 0x80);
+ const u32 soff = (or * 0x800);
+ u32 dpctrl = nv_rd32(dev, 0x61c10c + loff) & 0x000f0000;
+ u32 clksor = nv_rd32(dev, 0x612300 + soff);
+
+ if (dpctrl > 0x00030000) *link_nr = 4;
+ else if (dpctrl > 0x00010000) *link_nr = 2;
+ else *link_nr = 1;
+
+ *link_bw = (clksor & 0x007c0000) >> 18;
+ *link_bw *= 27000;
+}
+
+static void
+nvd0_sor_dp_calc_tu(struct drm_device *dev, struct dcb_entry *dcb,
+ u32 crtc, u32 datarate)
+{
+ const u32 symbol = 100000;
+ const u32 TU = 64;
+ u32 link_nr, link_bw;
+ u64 ratio, value;
+
+ nvd0_sor_dp_link_get(dev, dcb, &link_nr, &link_bw);
+
+ ratio = datarate;
+ ratio *= symbol;
+ do_div(ratio, link_nr * link_bw);
+
+ value = (symbol - ratio) * TU;
+ value *= ratio;
+ do_div(value, symbol);
+ do_div(value, symbol);
+
+ value += 5;
+ value |= 0x08000000;
+
+ nv_wr32(dev, 0x616610 + (crtc * 0x800), value);
+}
+
static void
nvd0_sor_dpms(struct drm_encoder *encoder, int mode)
{
@@ -1215,6 +1352,16 @@ nvd0_sor_dpms(struct drm_encoder *encoder, int mode)
nv_mask(dev, 0x61c004 + (or * 0x0800), 0x80000001, dpms_ctrl);
nv_wait(dev, 0x61c004 + (or * 0x0800), 0x80000000, 0x00000000);
nv_wait(dev, 0x61c030 + (or * 0x0800), 0x10000000, 0x00000000);
+
+ if (nv_encoder->dcb->type == OUTPUT_DP) {
+ struct dp_train_func func = {
+ .link_set = nvd0_sor_dp_link_set,
+ .train_set = nvd0_sor_dp_train_set,
+ .train_adj = nvd0_sor_dp_train_adj
+ };
+
+ nouveau_dp_dpms(encoder, mode, nv_encoder->dp.datarate, &func);
+ }
}
static bool
@@ -1306,6 +1453,19 @@ nvd0_sor_mode_set(struct drm_encoder *encoder, struct drm_display_mode *umode,
}
break;
+ case OUTPUT_DP:
+ if (nv_connector->base.display_info.bpc == 6)
+ nv_encoder->dp.datarate = mode->clock * 18 / 8;
+ else
+ nv_encoder->dp.datarate = mode->clock * 24 / 8;
+
+ if (nv_encoder->dcb->sorconf.link & 1)
+ mode_ctrl |= 0x00000800;
+ else
+ mode_ctrl |= 0x00000900;
+
+ or_config = (mode_ctrl & 0x00000f00) >> 8;
+ break;
default:
BUG_ON(1);
break;
@@ -1313,6 +1473,11 @@ nvd0_sor_mode_set(struct drm_encoder *encoder, struct drm_display_mode *umode,
nvd0_sor_dpms(encoder, DRM_MODE_DPMS_ON);
+ if (nv_encoder->dcb->type == OUTPUT_DP) {
+ nvd0_sor_dp_calc_tu(dev, nv_encoder->dcb, nv_crtc->index,
+ nv_encoder->dp.datarate);
+ }
+
push = evo_wait(dev, EVO_MASTER, 4);
if (push) {
evo_mthd(push, 0x0200 + (nv_encoder->or * 0x20), 2);
@@ -1413,6 +1578,8 @@ lookup_dcb(struct drm_device *dev, int id, u32 mc)
case 0x00000100: type = OUTPUT_TMDS; break;
case 0x00000200: type = OUTPUT_TMDS; break;
case 0x00000500: type = OUTPUT_TMDS; break;
+ case 0x00000800: type = OUTPUT_DP; break;
+ case 0x00000900: type = OUTPUT_DP; break;
default:
NV_ERROR(dev, "PDISP: unknown SOR mc 0x%08x\n", mc);
return NULL;
@@ -1498,6 +1665,7 @@ nvd0_display_unk2_handler(struct drm_device *dev, u32 crtc, u32 mask)
break;
case OUTPUT_TMDS:
case OUTPUT_LVDS:
+ case OUTPUT_DP:
if (cfg & 0x00000100)
tmp = 0x00000101;
else
@@ -1798,6 +1966,7 @@ nvd0_display_create(struct drm_device *dev)
switch (dcbe->type) {
case OUTPUT_TMDS:
case OUTPUT_LVDS:
+ case OUTPUT_DP:
nvd0_sor_create(connector, dcbe);
break;
case OUTPUT_ANALOG: