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1/*2 * Copyright 2012 Red Hat Inc.3 *4 * Permission is hereby granted, free of charge, to any person obtaining a5 * copy of this software and associated documentation files (the "Software"),6 * to deal in the Software without restriction, including without limitation7 * the rights to use, copy, modify, merge, publish, distribute, sublicense,8 * and/or sell copies of the Software, and to permit persons to whom the9 * Software is furnished to do so, subject to the following conditions:10 *11 * The above copyright notice and this permission notice shall be included in12 * all copies or substantial portions of the Software.13 *14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR15 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,16 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL17 * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR18 * 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 OR20 * OTHER DEALINGS IN THE SOFTWARE.21 *22 * Authors: Ben Skeggs23 */24#include "priv.h"25 26void27gf119_gpio_reset(struct nvkm_gpio *gpio, u8 match)28{29 struct nvkm_device *device = gpio->subdev.device;30 struct nvkm_bios *bios = device->bios;31 u8 ver, len;32 u16 entry;33 int ent = -1;34 35 while ((entry = dcb_gpio_entry(bios, 0, ++ent, &ver, &len))) {36 u32 data = nvbios_rd32(bios, entry);37 u8 line = (data & 0x0000003f);38 u8 defs = !!(data & 0x00000080);39 u8 func = (data & 0x0000ff00) >> 8;40 u8 unk0 = (data & 0x00ff0000) >> 16;41 u8 unk1 = (data & 0x1f000000) >> 24;42 43 if ( func == DCB_GPIO_UNUSED ||44 (match != DCB_GPIO_UNUSED && match != func))45 continue;46 47 nvkm_gpio_set(gpio, 0, func, line, defs);48 49 nvkm_mask(device, 0x00d610 + (line * 4), 0xff, unk0);50 if (unk1--)51 nvkm_mask(device, 0x00d740 + (unk1 * 4), 0xff, line);52 }53}54 55int56gf119_gpio_drive(struct nvkm_gpio *gpio, int line, int dir, int out)57{58 struct nvkm_device *device = gpio->subdev.device;59 u32 data = ((dir ^ 1) << 13) | (out << 12);60 nvkm_mask(device, 0x00d610 + (line * 4), 0x00003000, data);61 nvkm_mask(device, 0x00d604, 0x00000001, 0x00000001); /* update? */62 return 0;63}64 65int66gf119_gpio_sense(struct nvkm_gpio *gpio, int line)67{68 struct nvkm_device *device = gpio->subdev.device;69 return !!(nvkm_rd32(device, 0x00d610 + (line * 4)) & 0x00004000);70}71 72static const struct nvkm_gpio_func73gf119_gpio = {74 .lines = 32,75 .intr_stat = g94_gpio_intr_stat,76 .intr_mask = g94_gpio_intr_mask,77 .drive = gf119_gpio_drive,78 .sense = gf119_gpio_sense,79 .reset = gf119_gpio_reset,80};81 82int83gf119_gpio_new(struct nvkm_device *device, enum nvkm_subdev_type type, int inst,84 struct nvkm_gpio **pgpio)85{86 return nvkm_gpio_new_(&gf119_gpio, device, type, inst, pgpio);87}88