| /* |
| * Copyright 2021 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 "priv.h" |
| |
| #include <subdev/gsp.h> |
| |
| static void |
| ga102_gpio_reset(struct nvkm_gpio *gpio, u8 match) |
| { |
| struct nvkm_device *device = gpio->subdev.device; |
| struct nvkm_bios *bios = device->bios; |
| u8 ver, len; |
| u16 entry; |
| int ent = -1; |
| |
| while ((entry = dcb_gpio_entry(bios, 0, ++ent, &ver, &len))) { |
| u32 data = nvbios_rd32(bios, entry); |
| u8 line = (data & 0x0000003f); |
| u8 defs = !!(data & 0x00000080); |
| u8 func = (data & 0x0000ff00) >> 8; |
| u8 unk0 = (data & 0x00ff0000) >> 16; |
| u8 unk1 = (data & 0x1f000000) >> 24; |
| |
| if ( func == DCB_GPIO_UNUSED || |
| (match != DCB_GPIO_UNUSED && match != func)) |
| continue; |
| |
| nvkm_gpio_set(gpio, 0, func, line, defs); |
| |
| nvkm_mask(device, 0x021200 + (line * 4), 0xff, unk0); |
| if (unk1--) |
| nvkm_mask(device, 0x00d740 + (unk1 * 4), 0xff, line); |
| } |
| } |
| |
| static int |
| ga102_gpio_drive(struct nvkm_gpio *gpio, int line, int dir, int out) |
| { |
| struct nvkm_device *device = gpio->subdev.device; |
| u32 data = ((dir ^ 1) << 13) | (out << 12); |
| nvkm_mask(device, 0x021200 + (line * 4), 0x00003000, data); |
| nvkm_mask(device, 0x00d604, 0x00000001, 0x00000001); /* update? */ |
| return 0; |
| } |
| |
| static int |
| ga102_gpio_sense(struct nvkm_gpio *gpio, int line) |
| { |
| struct nvkm_device *device = gpio->subdev.device; |
| return !!(nvkm_rd32(device, 0x021200 + (line * 4)) & 0x00004000); |
| } |
| |
| static void |
| ga102_gpio_intr_stat(struct nvkm_gpio *gpio, u32 *hi, u32 *lo) |
| { |
| struct nvkm_device *device = gpio->subdev.device; |
| u32 intr0 = nvkm_rd32(device, 0x021640); |
| u32 intr1 = nvkm_rd32(device, 0x02164c); |
| u32 stat0 = nvkm_rd32(device, 0x021648) & intr0; |
| u32 stat1 = nvkm_rd32(device, 0x021654) & intr1; |
| *lo = (stat1 & 0xffff0000) | (stat0 >> 16); |
| *hi = (stat1 << 16) | (stat0 & 0x0000ffff); |
| nvkm_wr32(device, 0x021640, intr0); |
| nvkm_wr32(device, 0x02164c, intr1); |
| } |
| |
| static void |
| ga102_gpio_intr_mask(struct nvkm_gpio *gpio, u32 type, u32 mask, u32 data) |
| { |
| struct nvkm_device *device = gpio->subdev.device; |
| u32 inte0 = nvkm_rd32(device, 0x021648); |
| u32 inte1 = nvkm_rd32(device, 0x021654); |
| if (type & NVKM_GPIO_LO) |
| inte0 = (inte0 & ~(mask << 16)) | (data << 16); |
| if (type & NVKM_GPIO_HI) |
| inte0 = (inte0 & ~(mask & 0xffff)) | (data & 0xffff); |
| mask >>= 16; |
| data >>= 16; |
| if (type & NVKM_GPIO_LO) |
| inte1 = (inte1 & ~(mask << 16)) | (data << 16); |
| if (type & NVKM_GPIO_HI) |
| inte1 = (inte1 & ~mask) | data; |
| nvkm_wr32(device, 0x021648, inte0); |
| nvkm_wr32(device, 0x021654, inte1); |
| } |
| |
| static const struct nvkm_gpio_func |
| ga102_gpio = { |
| .lines = 32, |
| .intr_stat = ga102_gpio_intr_stat, |
| .intr_mask = ga102_gpio_intr_mask, |
| .drive = ga102_gpio_drive, |
| .sense = ga102_gpio_sense, |
| .reset = ga102_gpio_reset, |
| }; |
| |
| int |
| ga102_gpio_new(struct nvkm_device *device, enum nvkm_subdev_type type, int inst, |
| struct nvkm_gpio **pgpio) |
| { |
| if (nvkm_gsp_rm(device->gsp)) |
| return -ENODEV; |
| |
| return nvkm_gpio_new_(&ga102_gpio, device, type, inst, pgpio); |
| } |