drivers/gpu/drm/nouveau/nvkm/engine/disp/sorg94.c

   1 /*
   2  * Copyright 2012 Red Hat Inc.
   3  *
   4  * Permission is hereby granted, free of charge, to any person obtaining a
   5  * copy of this software and associated documentation files (the "Software"),
   6  * to deal in the Software without restriction, including without limitation
   7  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
   8  * and/or sell copies of the Software, and to permit persons to whom the
   9  * Software is furnished to do so, subject to the following conditions:
  10  *
  11  * The above copyright notice and this permission notice shall be included in
  12  * all copies or substantial portions of the Software.
  13  *
  14  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  15  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  16  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  17  * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
  18  * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
  19  * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
  20  * OTHER DEALINGS IN THE SOFTWARE.
  21  *
  22  * Authors: Ben Skeggs
  23  */
  24 #include "nv50.h"
  25 #include "outpdp.h"
  26
  27 #include <subdev/timer.h>
  28
  29 static inline u32
  30 g94_sor_soff(struct nvkm_output_dp *outp)
  31 {
  32         return (ffs(outp->base.info.or) - 1) * 0x800;
  33 }
  34
  35 static inline u32
  36 g94_sor_loff(struct nvkm_output_dp *outp)
  37 {
  38         return g94_sor_soff(outp) + !(outp->base.info.sorconf.link & 1) * 0x80;
  39 }
  40
  41 /*******************************************************************************
  42  * DisplayPort
  43  ******************************************************************************/
  44 u32
  45 g94_sor_dp_lane_map(struct nvkm_device *device, u8 lane)
  46 {
  47         static const u8 gm100[] = { 0, 8, 16, 24 };
  48         static const u8 mcp89[] = { 24, 16, 8, 0 }; /* thanks, apple.. */
  49         static const u8   g94[] = { 16, 8, 0, 24 };
  50         if (device->chipset >= 0x110)
  51                 return gm100[lane];
  52         if (device->chipset == 0xaf)
  53                 return mcp89[lane];
  54         return g94[lane];
  55 }
  56
  57 static int
  58 g94_sor_dp_pattern(struct nvkm_output_dp *outp, int pattern)
  59 {
  60         struct nvkm_device *device = outp->base.disp->engine.subdev.device;
  61         const u32 loff = g94_sor_loff(outp);
  62         nvkm_mask(device, 0x61c10c + loff, 0x0f000000, pattern << 24);
  63         return 0;
  64 }
  65
  66 int
  67 g94_sor_dp_lnk_pwr(struct nvkm_output_dp *outp, int nr)
  68 {
  69         struct nvkm_device *device = outp->base.disp->engine.subdev.device;
  70         const u32 soff = g94_sor_soff(outp);
  71         const u32 loff = g94_sor_loff(outp);
  72         u32 mask = 0, i;
  73
  74         for (i = 0; i < nr; i++)
  75                 mask |= 1 << (g94_sor_dp_lane_map(device, i) >> 3);
  76
  77         nvkm_mask(device, 0x61c130 + loff, 0x0000000f, mask);
  78         nvkm_mask(device, 0x61c034 + soff, 0x80000000, 0x80000000);
  79         nvkm_msec(device, 2000,
  80                 if (!(nvkm_rd32(device, 0x61c034 + soff) & 0x80000000))
  81                         break;
  82         );
  83         return 0;
  84 }
  85
  86 static int
  87 g94_sor_dp_lnk_ctl(struct nvkm_output_dp *outp, int nr, int bw, bool ef)
  88 {
  89         struct nvkm_device *device = outp->base.disp->engine.subdev.device;
  90         const u32 soff = g94_sor_soff(outp);
  91         const u32 loff = g94_sor_loff(outp);
  92         u32 dpctrl = 0x00000000;
  93         u32 clksor = 0x00000000;
  94
  95         dpctrl |= ((1 << nr) - 1) << 16;
  96         if (ef)
  97                 dpctrl |= 0x00004000;
  98         if (bw > 0x06)
  99                 clksor |= 0x00040000;
 100
 101         nvkm_mask(device, 0x614300 + soff, 0x000c0000, clksor);
 102         nvkm_mask(device, 0x61c10c + loff, 0x001f4000, dpctrl);
 103         return 0;
 104 }
 105
 106 static int
 107 g94_sor_dp_drv_ctl(struct nvkm_output_dp *outp, int ln, int vs, int pe, int pc)
 108 {
 109         struct nvkm_device *device = outp->base.disp->engine.subdev.device;
 110         struct nvkm_bios *bios = device->bios;
 111         const u32 shift = g94_sor_dp_lane_map(device, ln);
 112         const u32 loff = g94_sor_loff(outp);
 113         u32 addr, data[3];
 114         u8  ver, hdr, cnt, len;
 115         struct nvbios_dpout info;
 116         struct nvbios_dpcfg ocfg;
 117
 118         addr = nvbios_dpout_match(bios, outp->base.info.hasht,
 119                                         outp->base.info.hashm,
 120                                   &ver, &hdr, &cnt, &len, &info);
 121         if (!addr)
 122                 return -ENODEV;
 123
 124         addr = nvbios_dpcfg_match(bios, addr, 0, vs, pe,
 125                                   &ver, &hdr, &cnt, &len, &ocfg);
 126         if (!addr)
 127                 return -EINVAL;
 128
 129         data[0] = nvkm_rd32(device, 0x61c118 + loff) & ~(0x000000ff << shift);
 130         data[1] = nvkm_rd32(device, 0x61c120 + loff) & ~(0x000000ff << shift);
 131         data[2] = nvkm_rd32(device, 0x61c130 + loff);
 132         if ((data[2] & 0x0000ff00) < (ocfg.tx_pu << 8) || ln == 0)
 133                 data[2] = (data[2] & ~0x0000ff00) | (ocfg.tx_pu << 8);
 134         nvkm_wr32(device, 0x61c118 + loff, data[0] | (ocfg.dc << shift));
 135         nvkm_wr32(device, 0x61c120 + loff, data[1] | (ocfg.pe << shift));
 136         nvkm_wr32(device, 0x61c130 + loff, data[2]);
 137         return 0;
 138 }
 139
 140 static const struct nvkm_output_dp_func
 141 g94_sor_dp_func = {
 142         .pattern = g94_sor_dp_pattern,
 143         .lnk_pwr = g94_sor_dp_lnk_pwr,
 144         .lnk_ctl = g94_sor_dp_lnk_ctl,
 145         .drv_ctl = g94_sor_dp_drv_ctl,
 146 };
 147
 148 int
 149 g94_sor_dp_new(struct nvkm_disp *disp, int index, struct dcb_output *dcbE,
 150                struct nvkm_output **poutp)
 151 {
 152         return nvkm_output_dp_new_(&g94_sor_dp_func, disp, index, dcbE, poutp);
 153 }