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path: root/drivers/gpu/drm/nouveau/nv50_sor.c
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Diffstat (limited to 'drivers/gpu/drm/nouveau/nv50_sor.c')
-rw-r--r--drivers/gpu/drm/nouveau/nv50_sor.c213
1 files changed, 195 insertions, 18 deletions
diff --git a/drivers/gpu/drm/nouveau/nv50_sor.c b/drivers/gpu/drm/nouveau/nv50_sor.c
index c4423ba9c9b..27464021247 100644
--- a/drivers/gpu/drm/nouveau/nv50_sor.c
+++ b/drivers/gpu/drm/nouveau/nv50_sor.c
@@ -36,6 +36,193 @@
#include "nouveau_crtc.h"
#include "nv50_display.h"
+static u32
+nv50_sor_dp_lane_map(struct drm_device *dev, struct dcb_entry *dcb, u8 lane)
+{
+ struct drm_nouveau_private *dev_priv = dev->dev_private;
+ static const u8 nvaf[] = { 24, 16, 8, 0 }; /* thanks, apple.. */
+ static const u8 nv50[] = { 16, 8, 0, 24 };
+ if (dev_priv->chipset == 0xaf)
+ return nvaf[lane];
+ return nv50[lane];
+}
+
+static void
+nv50_sor_dp_train_set(struct drm_device *dev, struct dcb_entry *dcb, u8 pattern)
+{
+ u32 or = ffs(dcb->or) - 1, link = !(dcb->sorconf.link & 1);
+ nv_mask(dev, NV50_SOR_DP_CTRL(or, link), 0x0f000000, pattern << 24);
+}
+
+static void
+nv50_sor_dp_train_adj(struct drm_device *dev, struct dcb_entry *dcb,
+ u8 lane, u8 swing, u8 preem)
+{
+ u32 or = ffs(dcb->or) - 1, link = !(dcb->sorconf.link & 1);
+ u32 shift = nv50_sor_dp_lane_map(dev, dcb, lane);
+ u32 mask = 0x000000ff << shift;
+ u8 *table, *entry, *config;
+
+ table = nouveau_dp_bios_data(dev, dcb, &entry);
+ if (!table || (table[0] != 0x20 && table[0] != 0x21)) {
+ NV_ERROR(dev, "PDISP: unsupported DP table for chipset\n");
+ return;
+ }
+
+ config = entry + table[4];
+ while (config[0] != swing || config[1] != preem) {
+ config += table[5];
+ if (config >= entry + table[4] + entry[4] * table[5])
+ return;
+ }
+
+ nv_mask(dev, NV50_SOR_DP_UNK118(or, link), mask, config[2] << shift);
+ nv_mask(dev, NV50_SOR_DP_UNK120(or, link), mask, config[3] << shift);
+ nv_mask(dev, NV50_SOR_DP_UNK130(or, link), 0x0000ff00, config[4] << 8);
+}
+
+static void
+nv50_sor_dp_link_set(struct drm_device *dev, struct dcb_entry *dcb, int crtc,
+ int link_nr, u32 link_bw, bool enhframe)
+{
+ u32 or = ffs(dcb->or) - 1, link = !(dcb->sorconf.link & 1);
+ u32 dpctrl = nv_rd32(dev, NV50_SOR_DP_CTRL(or, link)) & ~0x001f4000;
+ u32 clksor = nv_rd32(dev, 0x614300 + (or * 0x800)) & ~0x000c0000;
+ u8 *table, *entry, mask;
+ int i;
+
+ table = nouveau_dp_bios_data(dev, dcb, &entry);
+ if (!table || (table[0] != 0x20 && table[0] != 0x21)) {
+ NV_ERROR(dev, "PDISP: unsupported DP table for chipset\n");
+ return;
+ }
+
+ entry = ROMPTR(dev, entry[10]);
+ if (entry) {
+ while (link_bw < ROM16(entry[0]) * 10)
+ entry += 4;
+
+ nouveau_bios_run_init_table(dev, ROM16(entry[2]), dcb, crtc);
+ }
+
+ dpctrl |= ((1 << link_nr) - 1) << 16;
+ if (enhframe)
+ dpctrl |= 0x00004000;
+
+ if (link_bw > 162000)
+ clksor |= 0x00040000;
+
+ nv_wr32(dev, 0x614300 + (or * 0x800), clksor);
+ nv_wr32(dev, NV50_SOR_DP_CTRL(or, link), dpctrl);
+
+ mask = 0;
+ for (i = 0; i < link_nr; i++)
+ mask |= 1 << (nv50_sor_dp_lane_map(dev, dcb, i) >> 3);
+ nv_mask(dev, NV50_SOR_DP_UNK130(or, link), 0x0000000f, mask);
+}
+
+static void
+nv50_sor_dp_link_get(struct drm_device *dev, u32 or, u32 link, u32 *nr, u32 *bw)
+{
+ u32 dpctrl = nv_rd32(dev, NV50_SOR_DP_CTRL(or, link)) & 0x000f0000;
+ u32 clksor = nv_rd32(dev, 0x614300 + (or * 0x800));
+ if (clksor & 0x000c0000)
+ *bw = 270000;
+ else
+ *bw = 162000;
+
+ if (dpctrl > 0x00030000) *nr = 4;
+ else if (dpctrl > 0x00010000) *nr = 2;
+ else *nr = 1;
+}
+
+void
+nv50_sor_dp_calc_tu(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 */
+ nv50_sor_dp_link_get(dev, or, link, &link_nr, &link_bw);
+ link_data_rate = (clk * bpp / 8) / link_nr;
+
+ /* calculate ratio of packed data rate to link symbol rate */
+ 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 void
nv50_sor_disconnect(struct drm_encoder *encoder)
{
@@ -117,20 +304,13 @@ nv50_sor_dpms(struct drm_encoder *encoder, int mode)
}
if (nv_encoder->dcb->type == OUTPUT_DP) {
- struct nouveau_i2c_chan *auxch;
-
- auxch = nouveau_i2c_find(dev, nv_encoder->dcb->i2c_index);
- if (!auxch)
- return;
+ struct dp_train_func func = {
+ .link_set = nv50_sor_dp_link_set,
+ .train_set = nv50_sor_dp_train_set,
+ .train_adj = nv50_sor_dp_train_adj
+ };
- if (mode == DRM_MODE_DPMS_ON) {
- u8 status = DP_SET_POWER_D0;
- nouveau_dp_auxch(auxch, 8, DP_SET_POWER, &status, 1);
- nouveau_dp_link_train(encoder, nv_encoder->dp.datarate);
- } else {
- u8 status = DP_SET_POWER_D3;
- nouveau_dp_auxch(auxch, 8, DP_SET_POWER, &status, 1);
- }
+ nouveau_dp_dpms(encoder, mode, nv_encoder->dp.datarate, &func);
}
}
@@ -162,11 +342,8 @@ nv50_sor_mode_fixup(struct drm_encoder *encoder, struct drm_display_mode *mode,
}
if (connector->scaling_mode != DRM_MODE_SCALE_NONE &&
- connector->native_mode) {
- int id = adjusted_mode->base.id;
- *adjusted_mode = *connector->native_mode;
- adjusted_mode->base.id = id;
- }
+ connector->native_mode)
+ drm_mode_copy(adjusted_mode, connector->native_mode);
return true;
}
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2024-11-28 11:40:24 +0000