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      1 /*	$NetBSD: nouveau_nvkm_subdev_devinit_base.c,v 1.3 2021/12/18 23:45:39 riastradh Exp $	*/
      2 
      3 /*
      4  * Copyright 2012 Red Hat Inc.
      5  *
      6  * Permission is hereby granted, free of charge, to any person obtaining a
      7  * copy of this software and associated documentation files (the "Software"),
      8  * to deal in the Software without restriction, including without limitation
      9  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
     10  * and/or sell copies of the Software, and to permit persons to whom the
     11  * Software is furnished to do so, subject to the following conditions:
     12  *
     13  * The above copyright notice and this permission notice shall be included in
     14  * all copies or substantial portions of the Software.
     15  *
     16  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
     17  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
     18  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
     19  * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
     20  * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
     21  * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
     22  * OTHER DEALINGS IN THE SOFTWARE.
     23  *
     24  * Authors: Ben Skeggs
     25  */
     26 #include <sys/cdefs.h>
     27 __KERNEL_RCSID(0, "$NetBSD: nouveau_nvkm_subdev_devinit_base.c,v 1.3 2021/12/18 23:45:39 riastradh Exp $");
     28 
     29 #include "priv.h"
     30 
     31 #include <core/option.h>
     32 #include <subdev/vga.h>
     33 
     34 u32
     35 nvkm_devinit_mmio(struct nvkm_devinit *init, u32 addr)
     36 {
     37 	if (init->func->mmio)
     38 		addr = init->func->mmio(init, addr);
     39 	return addr;
     40 }
     41 
     42 int
     43 nvkm_devinit_pll_set(struct nvkm_devinit *init, u32 type, u32 khz)
     44 {
     45 	return init->func->pll_set(init, type, khz);
     46 }
     47 
     48 void
     49 nvkm_devinit_meminit(struct nvkm_devinit *init)
     50 {
     51 	if (init->func->meminit)
     52 		init->func->meminit(init);
     53 }
     54 
     55 u64
     56 nvkm_devinit_disable(struct nvkm_devinit *init)
     57 {
     58 	if (init && init->func->disable)
     59 		return init->func->disable(init);
     60 	return 0;
     61 }
     62 
     63 int
     64 nvkm_devinit_post(struct nvkm_devinit *init, u64 *disable)
     65 {
     66 	int ret = 0;
     67 	if (init && init->func->post)
     68 		ret = init->func->post(init, init->post);
     69 	*disable = nvkm_devinit_disable(init);
     70 	return ret;
     71 }
     72 
     73 static int
     74 nvkm_devinit_fini(struct nvkm_subdev *subdev, bool suspend)
     75 {
     76 	struct nvkm_devinit *init = nvkm_devinit(subdev);
     77 	/* force full reinit on resume */
     78 	if (suspend)
     79 		init->post = true;
     80 	return 0;
     81 }
     82 
     83 static int
     84 nvkm_devinit_preinit(struct nvkm_subdev *subdev)
     85 {
     86 	struct nvkm_devinit *init = nvkm_devinit(subdev);
     87 
     88 	if (init->func->preinit)
     89 		init->func->preinit(init);
     90 
     91 	/* Override the post flag during the first call if NvForcePost is set */
     92 	if (init->force_post) {
     93 		init->post = init->force_post;
     94 		init->force_post = false;
     95 	}
     96 
     97 	/* unlock the extended vga crtc regs */
     98 	nvkm_lockvgac(subdev->device, false);
     99 	return 0;
    100 }
    101 
    102 static int
    103 nvkm_devinit_init(struct nvkm_subdev *subdev)
    104 {
    105 	struct nvkm_devinit *init = nvkm_devinit(subdev);
    106 	if (init->func->init)
    107 		init->func->init(init);
    108 	return 0;
    109 }
    110 
    111 static void *
    112 nvkm_devinit_dtor(struct nvkm_subdev *subdev)
    113 {
    114 	struct nvkm_devinit *init = nvkm_devinit(subdev);
    115 	void *data = init;
    116 
    117 	if (init->func->dtor)
    118 		data = init->func->dtor(init);
    119 
    120 	/* lock crtc regs */
    121 	nvkm_lockvgac(subdev->device, true);
    122 	return data;
    123 }
    124 
    125 static const struct nvkm_subdev_func
    126 nvkm_devinit = {
    127 	.dtor = nvkm_devinit_dtor,
    128 	.preinit = nvkm_devinit_preinit,
    129 	.init = nvkm_devinit_init,
    130 	.fini = nvkm_devinit_fini,
    131 };
    132 
    133 void
    134 nvkm_devinit_ctor(const struct nvkm_devinit_func *func,
    135 		  struct nvkm_device *device, int index,
    136 		  struct nvkm_devinit *init)
    137 {
    138 	nvkm_subdev_ctor(&nvkm_devinit, device, index, &init->subdev);
    139 	init->func = func;
    140 	init->force_post = nvkm_boolopt(device->cfgopt, "NvForcePost", false);
    141 }
    142