cregit-Linux how code gets into the kernel

Release 4.18 drivers/gpu/drm/nouveau/dispnv50/headc37d.c

/*
 * Copyright 2018 Red Hat Inc.
 *
 * Permission is hereby granted, free of charge, to any person obtaining a
 * copy of this software and associated documentation files (the "Software"),
 * to deal in the Software without restriction, including without limitation
 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
 * and/or sell copies of the Software, and to permit persons to whom the
 * Software is furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
 * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
 * OTHER DEALINGS IN THE SOFTWARE.
 */
#include "head.h"
#include "atom.h"
#include "core.h"


static void headc37d_or(struct nv50_head *head, struct nv50_head_atom *asyh) { struct nv50_dmac *core = &nv50_disp(head->base.base.dev)->core->chan; u32 *push; if ((push = evo_wait(core, 2))) { /*XXX: This is a dirty hack until OR depth handling is * improved later for deep colour etc. */ switch (asyh->or.depth) { case 6: asyh->or.depth = 5; break; case 5: asyh->or.depth = 4; break; case 2: asyh->or.depth = 1; break; case 0: asyh->or.depth = 4; break; default: WARN_ON(1); break; } evo_mthd(push, 0x2004 + (head->base.index * 0x400), 1); evo_data(push, 0x00000001 | asyh->or.depth << 4 | asyh->or.nvsync << 3 | asyh->or.nhsync << 2); evo_kick(push, core); } }

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static void headc37d_procamp(struct nv50_head *head, struct nv50_head_atom *asyh) { struct nv50_dmac *core = &nv50_disp(head->base.base.dev)->core->chan; u32 *push; if ((push = evo_wait(core, 2))) { evo_mthd(push, 0x2000 + (head->base.index * 0x400), 1); evo_data(push, 0x80000000 | asyh->procamp.sat.sin << 16 | asyh->procamp.sat.cos << 4); evo_kick(push, core); } }

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static void headc37d_dither(struct nv50_head *head, struct nv50_head_atom *asyh) { struct nv50_dmac *core = &nv50_disp(head->base.base.dev)->core->chan; u32 *push; if ((push = evo_wait(core, 2))) { evo_mthd(push, 0x2018 + (head->base.index * 0x0400), 1); evo_data(push, asyh->dither.mode << 8 | asyh->dither.bits << 4 | asyh->dither.enable); evo_kick(push, core); } }

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static void headc37d_curs_clr(struct nv50_head *head) { struct nv50_dmac *core = &nv50_disp(head->base.base.dev)->core->chan; u32 *push; if ((push = evo_wait(core, 4))) { evo_mthd(push, 0x209c + head->base.index * 0x400, 1); evo_data(push, 0x000000cf); evo_mthd(push, 0x2088 + head->base.index * 0x400, 1); evo_data(push, 0x00000000); evo_kick(push, core); } }

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static void headc37d_curs_set(struct nv50_head *head, struct nv50_head_atom *asyh) { struct nv50_dmac *core = &nv50_disp(head->base.base.dev)->core->chan; u32 *push; if ((push = evo_wait(core, 7))) { evo_mthd(push, 0x209c + head->base.index * 0x400, 2); evo_data(push, 0x80000000 | asyh->curs.layout << 8 | asyh->curs.format << 0); evo_data(push, 0x000072ff); evo_mthd(push, 0x2088 + head->base.index * 0x400, 1); evo_data(push, asyh->curs.handle); evo_mthd(push, 0x2090 + head->base.index * 0x400, 1); evo_data(push, asyh->curs.offset >> 8); evo_kick(push, core); } }

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static int headc37d_curs_format(struct nv50_head *head, struct nv50_wndw_atom *asyw, struct nv50_head_atom *asyh) { asyh->curs.format = asyw->image.format; return 0; }

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static void headc37d_olut_clr(struct nv50_head *head) { struct nv50_dmac *core = &nv50_disp(head->base.base.dev)->core->chan; u32 *push; if ((push = evo_wait(core, 2))) { evo_mthd(push, 0x20ac + (head->base.index * 0x400), 1); evo_data(push, 0x00000000); evo_kick(push, core); } }

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static void headc37d_olut_set(struct nv50_head *head, struct nv50_head_atom *asyh) { struct nv50_dmac *core = &nv50_disp(head->base.base.dev)->core->chan; u32 *push; if ((push = evo_wait(core, 4))) { evo_mthd(push, 0x20a4 + (head->base.index * 0x400), 3); evo_data(push, asyh->olut.output_mode << 8 | asyh->olut.range << 4 | asyh->olut.size); evo_data(push, asyh->olut.offset >> 8); evo_data(push, asyh->olut.handle); evo_kick(push, core); } }

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static void headc37d_olut(struct nv50_head *head, struct nv50_head_atom *asyh) { asyh->olut.mode = 2; asyh->olut.size = 0; asyh->olut.range = 0; asyh->olut.output_mode = 1; }

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static void headc37d_mode(struct nv50_head *head, struct nv50_head_atom *asyh) { struct nv50_dmac *core = &nv50_disp(head->base.base.dev)->core->chan; struct nv50_head_mode *m = &asyh->mode; u32 *push; if ((push = evo_wait(core, 12))) { evo_mthd(push, 0x2064 + (head->base.index * 0x400), 5); evo_data(push, (m->v.active << 16) | m->h.active ); evo_data(push, (m->v.synce << 16) | m->h.synce ); evo_data(push, (m->v.blanke << 16) | m->h.blanke ); evo_data(push, (m->v.blanks << 16) | m->h.blanks ); evo_data(push, (m->v.blank2e << 16) | m->v.blank2s); evo_mthd(push, 0x200c + (head->base.index * 0x400), 1); evo_data(push, m->clock * 1000); evo_mthd(push, 0x2028 + (head->base.index * 0x400), 1); evo_data(push, m->clock * 1000); /*XXX: HEAD_USAGE_BOUNDS, doesn't belong here. */ evo_mthd(push, 0x2030 + (head->base.index * 0x400), 1); evo_data(push, 0x00000124); evo_kick(push, core); } }

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static void headc37d_view(struct nv50_head *head, struct nv50_head_atom *asyh) { struct nv50_dmac *core = &nv50_disp(head->base.base.dev)->core->chan; u32 *push; if ((push = evo_wait(core, 4))) { evo_mthd(push, 0x204c + (head->base.index * 0x400), 1); evo_data(push, (asyh->view.iH << 16) | asyh->view.iW); evo_mthd(push, 0x2058 + (head->base.index * 0x400), 1); evo_data(push, (asyh->view.oH << 16) | asyh->view.oW); evo_kick(push, core); } }

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const struct nv50_head_func headc37d = { .view = headc37d_view, .mode = headc37d_mode, .olut = headc37d_olut, .olut_set = headc37d_olut_set, .olut_clr = headc37d_olut_clr, .curs_layout = head917d_curs_layout, .curs_format = headc37d_curs_format, .curs_set = headc37d_curs_set, .curs_clr = headc37d_curs_clr, .dither = headc37d_dither, .procamp = headc37d_procamp, .or = headc37d_or, };

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