diff options
Diffstat (limited to 'nvkm/engine/disp/nv50.c')
| -rw-r--r-- | nvkm/engine/disp/nv50.c | 40 |
1 files changed, 26 insertions, 14 deletions
diff --git a/nvkm/engine/disp/nv50.c b/nvkm/engine/disp/nv50.c index 938dc42b7..2df3a9370 100644 --- a/nvkm/engine/disp/nv50.c +++ b/nvkm/engine/disp/nv50.c @@ -1630,7 +1630,7 @@ nv50_disp_intr_unk20_1(struct nv50_disp_priv *priv, int head) } static void -nv50_disp_intr_unk20_2_dp(struct nv50_disp_priv *priv, +nv50_disp_intr_unk20_2_dp(struct nv50_disp_priv *priv, int head, struct dcb_output *outp, u32 pclk) { const int link = !(outp->sorconf.link & 1); @@ -1639,24 +1639,36 @@ nv50_disp_intr_unk20_2_dp(struct nv50_disp_priv *priv, const u32 loff = (link * 0x080) + soff; const u32 ctrl = nv_rd32(priv, 0x610794 + (or * 8)); const u32 symbol = 100000; - u32 dpctrl = nv_rd32(priv, 0x61c10c + loff) & 0x0000f0000; + const s32 vactive = nv_rd32(priv, 0x610af8 + (head * 0x540)) & 0xffff; + const s32 vblanke = nv_rd32(priv, 0x610ae8 + (head * 0x540)) & 0xffff; + const s32 vblanks = nv_rd32(priv, 0x610af0 + (head * 0x540)) & 0xffff; + u32 dpctrl = nv_rd32(priv, 0x61c10c + loff); u32 clksor = nv_rd32(priv, 0x614300 + soff); 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, bits; - - /* calculate packed data rate for each lane */ - if (dpctrl > 0x00030000) link_nr = 4; - else if (dpctrl > 0x00010000) link_nr = 2; - else link_nr = 1; - - if (clksor & 0x000c0000) - link_bw = 270000; - else - link_bw = 162000; - + u64 value; + + link_bw = (clksor & 0x000c0000) ? 270000 : 162000; + link_nr = hweight32(dpctrl & 0x000f0000); + + /* symbols/hblank - algorithm taken from comments in tegra driver */ + value = vblanke + vactive - vblanks - 7; + value = value * link_bw; + do_div(value, pclk); + value = value - (3 * !!(dpctrl & 0x00004000)) - (12 / link_nr); + nv_mask(priv, 0x61c1e8 + soff, 0x0000ffff, value); + + /* symbols/vblank - algorithm taken from comments in tegra driver */ + value = vblanks - vblanke - 25; + value = value * link_bw; + do_div(value, pclk); + value = value - ((36 / link_nr) + 3) - 1; + nv_mask(priv, 0x61c1ec + soff, 0x00ffffff, value); + + /* watermark / activesym */ if ((ctrl & 0xf0000) == 0x60000) bits = 30; else if ((ctrl & 0xf0000) == 0x50000) bits = 24; else bits = 18; @@ -1802,7 +1814,7 @@ nv50_disp_intr_unk20_2(struct nv50_disp_priv *priv, int head) } else if (!outp->info.location) { if (outp->info.type == DCB_OUTPUT_DP) - nv50_disp_intr_unk20_2_dp(priv, &outp->info, pclk); + nv50_disp_intr_unk20_2_dp(priv, head, &outp->info, pclk); oreg = 0x614300 + (ffs(outp->info.or) - 1) * 0x800; oval = (conf & 0x0100) ? 0x00000101 : 0x00000000; hval = 0x00000000; |