1 /* 2 * Copyright 2018 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 #include "wndw.h" 23 #include "atom.h" 24 25 #include <drm/drm_atomic_helper.h> 26 #include <drm/drm_plane_helper.h> 27 #include <nouveau_bo.h> 28 29 #include <nvif/clc37e.h> 30 31 static void 32 wndwc57e_ilut_clr(struct nv50_wndw *wndw) 33 { 34 u32 *push; 35 if ((push = evo_wait(&wndw->wndw, 2))) { 36 evo_mthd(push, 0x0444, 1); 37 evo_data(push, 0x00000000); 38 evo_kick(push, &wndw->wndw); 39 } 40 } 41 42 static void 43 wndwc57e_ilut_set(struct nv50_wndw *wndw, struct nv50_wndw_atom *asyw) 44 { 45 u32 *push; 46 if ((push = evo_wait(&wndw->wndw, 4))) { 47 evo_mthd(push, 0x0440, 3); 48 evo_data(push, asyw->xlut.i.size << 8 | 49 asyw->xlut.i.mode << 2 | 50 asyw->xlut.i.output_mode); 51 evo_data(push, asyw->xlut.handle); 52 evo_data(push, asyw->xlut.i.offset >> 8); 53 evo_kick(push, &wndw->wndw); 54 } 55 } 56 57 static u16 58 fixedU0_16_FP16(u16 fixed) 59 { 60 int sign = 0, exp = 0, man = 0; 61 if (fixed) { 62 while (--exp && !(fixed & 0x8000)) 63 fixed <<= 1; 64 man = ((fixed << 1) & 0xffc0) >> 6; 65 exp += 15; 66 } 67 return (sign << 15) | (exp << 10) | man; 68 } 69 70 static void 71 wndwc57e_ilut_load(struct drm_color_lut *in, int size, void __iomem *mem) 72 { 73 memset_io(mem, 0x00, 0x20); /* VSS header. */ 74 mem += 0x20; 75 76 for (; size--; in++, mem += 0x08) { 77 u16 r = fixedU0_16_FP16(drm_color_lut_extract(in-> red, 16)); 78 u16 g = fixedU0_16_FP16(drm_color_lut_extract(in->green, 16)); 79 u16 b = fixedU0_16_FP16(drm_color_lut_extract(in-> blue, 16)); 80 writew(r, mem + 0); 81 writew(g, mem + 2); 82 writew(b, mem + 4); 83 } 84 85 /* INTERPOLATE modes require a "next" entry to interpolate with, 86 * so we replicate the last entry to deal with this for now. 87 */ 88 writew(readw(mem - 8), mem + 0); 89 writew(readw(mem - 6), mem + 2); 90 writew(readw(mem - 4), mem + 4); 91 } 92 93 static void 94 wndwc57e_ilut(struct nv50_wndw *wndw, struct nv50_wndw_atom *asyw) 95 { 96 u16 size = asyw->ilut->length / sizeof(struct drm_color_lut); 97 if (size == 256) { 98 asyw->xlut.i.mode = 1; /* DIRECT8. */ 99 } else { 100 asyw->xlut.i.mode = 2; /* DIRECT10. */ 101 size = 1024; 102 } 103 asyw->xlut.i.size = 4 /* VSS header. */ + size + 1 /* Entries. */; 104 asyw->xlut.i.output_mode = 0; /* INTERPOLATE_DISABLE. */ 105 asyw->xlut.i.load = wndwc57e_ilut_load; 106 } 107 108 static const struct nv50_wndw_func 109 wndwc57e = { 110 .acquire = wndwc37e_acquire, 111 .release = wndwc37e_release, 112 .sema_set = wndwc37e_sema_set, 113 .sema_clr = wndwc37e_sema_clr, 114 .ntfy_set = wndwc37e_ntfy_set, 115 .ntfy_clr = wndwc37e_ntfy_clr, 116 .ntfy_reset = corec37d_ntfy_init, 117 .ntfy_wait_begun = base507c_ntfy_wait_begun, 118 .ilut = wndwc57e_ilut, 119 .ilut_identity = true, 120 .xlut_set = wndwc57e_ilut_set, 121 .xlut_clr = wndwc57e_ilut_clr, 122 .image_set = wndwc37e_image_set, 123 .image_clr = wndwc37e_image_clr, 124 .update = wndwc37e_update, 125 }; 126 127 int 128 wndwc57e_new(struct nouveau_drm *drm, enum drm_plane_type type, int index, 129 s32 oclass, struct nv50_wndw **pwndw) 130 { 131 return wndwc37e_new_(&wndwc57e, drm, type, index, oclass, 132 BIT(index >> 1), pwndw); 133 } 134