tu102.c

  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 "nv50.h"
 23
 24#include <subdev/bios.h>
 25#include <subdev/bios/pll.h>
 26#include <subdev/clk/pll.h>
 27#include <subdev/gsp.h>
 28
 29static int
 30tu102_devinit_pll_set(struct nvkm_devinit *init, u32 type, u32 freq)
 31{
 32	struct nvkm_subdev *subdev = &init->subdev;
 33	struct nvkm_device *device = subdev->device;
 34	struct nvbios_pll info;
 35	int head = type - PLL_VPLL0;
 36	int N, fN, M, P;
 37	int ret;
 38
 39	ret = nvbios_pll_parse(device->bios, type, &info);
 40	if (ret)
 41		return ret;
 42
 43	ret = gt215_pll_calc(subdev, &info, freq, &N, &fN, &M, &P);
 44	if (ret < 0)
 45		return ret;
 46
 47	switch (info.type) {
 48	case PLL_VPLL0:
 49	case PLL_VPLL1:
 50	case PLL_VPLL2:
 51	case PLL_VPLL3:
 52		nvkm_wr32(device, 0x00ef10 + (head * 0x40), fN << 16);
 53		nvkm_wr32(device, 0x00ef04 + (head * 0x40), (P << 16) |
 54							    (N <<  8) |
 55							    (M <<  0));
 56		/*XXX*/
 57		nvkm_wr32(device, 0x00ef0c + (head * 0x40), 0x00000900);
 58		nvkm_wr32(device, 0x00ef00 + (head * 0x40), 0x02000014);
 59		break;
 60	default:
 61		nvkm_warn(subdev, "%08x/%dKhz unimplemented\n", type, freq);
 62		ret = -EINVAL;
 63		break;
 64	}
 65
 66	return ret;
 67}
 68
 69static int
 70tu102_devinit_wait(struct nvkm_device *device)
 71{
 72	unsigned timeout = 50 + 2000;
 73
 74	do {
 75		if (nvkm_rd32(device, 0x118128) & 0x00000001) {
 76			if ((nvkm_rd32(device, 0x118234) & 0x000000ff) == 0xff)
 77				return 0;
 78		}
 79
 80		usleep_range(1000, 2000);
 81	} while (timeout--);
 82
 83	return -ETIMEDOUT;
 84}
 85
 86int
 87tu102_devinit_post(struct nvkm_devinit *init, bool post)
 88{
 89	return tu102_devinit_wait(init->subdev.device);
 90}
 91
 92static const struct nvkm_devinit_func
 93tu102_devinit = {
 94	.init = nv50_devinit_init,
 95	.post = tu102_devinit_post,
 96	.pll_set = tu102_devinit_pll_set,
 97	.disable = gm107_devinit_disable,
 98};
 99
100int
101tu102_devinit_new(struct nvkm_device *device, enum nvkm_subdev_type type, int inst,
102		  struct nvkm_devinit **pinit)
103{
104	if (nvkm_gsp_rm(device->gsp))
105		return r535_devinit_new(&tu102_devinit, device, type, inst, pinit);
106
107	return nv50_devinit_new_(&tu102_devinit, device, type, inst, pinit);
108}