1/* $NetBSD: nouveau_nvkm_subdev_gpio_gf119.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_gpio_gf119.c,v 1.3 2021/12/18 23:45:39 riastradh Exp $"); 28 29#include "priv.h" 30 31void 32gf119_gpio_reset(struct nvkm_gpio *gpio, u8 match) 33{ 34 struct nvkm_device *device = gpio->subdev.device; 35 struct nvkm_bios *bios = device->bios; 36 u8 ver, len; 37 u16 entry; 38 int ent = -1; 39 40 while ((entry = dcb_gpio_entry(bios, 0, ++ent, &ver, &len))) { 41 u32 data = nvbios_rd32(bios, entry); 42 u8 line = (data & 0x0000003f); 43 u8 defs = !!(data & 0x00000080); 44 u8 func = (data & 0x0000ff00) >> 8; 45 u8 unk0 = (data & 0x00ff0000) >> 16; 46 u8 unk1 = (data & 0x1f000000) >> 24; 47 48 if ( func == DCB_GPIO_UNUSED || 49 (match != DCB_GPIO_UNUSED && match != func)) 50 continue; 51 52 nvkm_gpio_set(gpio, 0, func, line, defs); 53 54 nvkm_mask(device, 0x00d610 + (line * 4), 0xff, unk0); 55 if (unk1--) 56 nvkm_mask(device, 0x00d740 + (unk1 * 4), 0xff, line); 57 } 58} 59 60int 61gf119_gpio_drive(struct nvkm_gpio *gpio, int line, int dir, int out) 62{ 63 struct nvkm_device *device = gpio->subdev.device; 64 u32 data = ((dir ^ 1) << 13) | (out << 12); 65 nvkm_mask(device, 0x00d610 + (line * 4), 0x00003000, data); 66 nvkm_mask(device, 0x00d604, 0x00000001, 0x00000001); /* update? */ 67 return 0; 68} 69 70int 71gf119_gpio_sense(struct nvkm_gpio *gpio, int line) 72{ 73 struct nvkm_device *device = gpio->subdev.device; 74 return !!(nvkm_rd32(device, 0x00d610 + (line * 4)) & 0x00004000); 75} 76 77static const struct nvkm_gpio_func 78gf119_gpio = { 79 .lines = 32, 80 .intr_stat = g94_gpio_intr_stat, 81 .intr_mask = g94_gpio_intr_mask, 82 .drive = gf119_gpio_drive, 83 .sense = gf119_gpio_sense, 84 .reset = gf119_gpio_reset, 85}; 86 87int 88gf119_gpio_new(struct nvkm_device *device, int index, struct nvkm_gpio **pgpio) 89{ 90 return nvkm_gpio_new_(&gf119_gpio, device, index, pgpio); 91} 92