diff options
Diffstat (limited to 'drivers/gpu/drm/nouveau/nv50_sor.c')
| -rw-r--r-- | drivers/gpu/drm/nouveau/nv50_sor.c | 213 |
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 c4423ba9c9bf..a7844ab6a50c 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->card_type == 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; } |