Ben Skeggs | e0996ae | 2012-07-10 12:20:17 +1000 | [diff] [blame] | 1 | /* |
| 2 | * Copyright 2012 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 | * Authors: Ben Skeggs |
| 23 | */ |
Ben Skeggs | fa531bc | 2013-02-13 13:34:39 +1000 | [diff] [blame] | 24 | #include "priv.h" |
Ben Skeggs | e0996ae | 2012-07-10 12:20:17 +1000 | [diff] [blame] | 25 | |
Ben Skeggs | fa531bc | 2013-02-13 13:34:39 +1000 | [diff] [blame] | 26 | void |
Ben Skeggs | 4e7659f | 2015-01-14 15:02:59 +1000 | [diff] [blame^] | 27 | gf110_gpio_reset(struct nvkm_gpio *gpio, u8 match) |
Ben Skeggs | e0996ae | 2012-07-10 12:20:17 +1000 | [diff] [blame] | 28 | { |
Ben Skeggs | 4e7659f | 2015-01-14 15:02:59 +1000 | [diff] [blame^] | 29 | struct nvkm_bios *bios = nvkm_bios(gpio); |
Ben Skeggs | d2bcea6 | 2012-12-07 10:09:17 +1000 | [diff] [blame] | 30 | u8 ver, len; |
Ben Skeggs | e0996ae | 2012-07-10 12:20:17 +1000 | [diff] [blame] | 31 | u16 entry; |
Ben Skeggs | e0996ae | 2012-07-10 12:20:17 +1000 | [diff] [blame] | 32 | int ent = -1; |
| 33 | |
Ben Skeggs | d2bcea6 | 2012-12-07 10:09:17 +1000 | [diff] [blame] | 34 | while ((entry = dcb_gpio_entry(bios, 0, ++ent, &ver, &len))) { |
Ben Skeggs | e0996ae | 2012-07-10 12:20:17 +1000 | [diff] [blame] | 35 | u32 data = nv_ro32(bios, entry); |
| 36 | u8 line = (data & 0x0000003f); |
| 37 | u8 defs = !!(data & 0x00000080); |
| 38 | u8 func = (data & 0x0000ff00) >> 8; |
| 39 | u8 unk0 = (data & 0x00ff0000) >> 16; |
| 40 | u8 unk1 = (data & 0x1f000000) >> 24; |
| 41 | |
Ben Skeggs | 1ed7316 | 2012-12-07 13:46:52 +1000 | [diff] [blame] | 42 | if ( func == DCB_GPIO_UNUSED || |
| 43 | (match != DCB_GPIO_UNUSED && match != func)) |
Ben Skeggs | e0996ae | 2012-07-10 12:20:17 +1000 | [diff] [blame] | 44 | continue; |
| 45 | |
| 46 | gpio->set(gpio, 0, func, line, defs); |
| 47 | |
Ben Skeggs | bc3b0c4 | 2014-05-13 10:33:23 +1000 | [diff] [blame] | 48 | nv_mask(gpio, 0x00d610 + (line * 4), 0xff, unk0); |
Ben Skeggs | e0996ae | 2012-07-10 12:20:17 +1000 | [diff] [blame] | 49 | if (unk1--) |
Ben Skeggs | bc3b0c4 | 2014-05-13 10:33:23 +1000 | [diff] [blame] | 50 | nv_mask(gpio, 0x00d740 + (unk1 * 4), 0xff, line); |
Ben Skeggs | e0996ae | 2012-07-10 12:20:17 +1000 | [diff] [blame] | 51 | } |
| 52 | } |
| 53 | |
Ben Skeggs | fa531bc | 2013-02-13 13:34:39 +1000 | [diff] [blame] | 54 | int |
Ben Skeggs | 4e7659f | 2015-01-14 15:02:59 +1000 | [diff] [blame^] | 55 | gf110_gpio_drive(struct nvkm_gpio *gpio, int line, int dir, int out) |
Ben Skeggs | e0996ae | 2012-07-10 12:20:17 +1000 | [diff] [blame] | 56 | { |
| 57 | u32 data = ((dir ^ 1) << 13) | (out << 12); |
| 58 | nv_mask(gpio, 0x00d610 + (line * 4), 0x00003000, data); |
| 59 | nv_mask(gpio, 0x00d604, 0x00000001, 0x00000001); /* update? */ |
| 60 | return 0; |
| 61 | } |
| 62 | |
Ben Skeggs | fa531bc | 2013-02-13 13:34:39 +1000 | [diff] [blame] | 63 | int |
Ben Skeggs | 4e7659f | 2015-01-14 15:02:59 +1000 | [diff] [blame^] | 64 | gf110_gpio_sense(struct nvkm_gpio *gpio, int line) |
Ben Skeggs | e0996ae | 2012-07-10 12:20:17 +1000 | [diff] [blame] | 65 | { |
| 66 | return !!(nv_rd32(gpio, 0x00d610 + (line * 4)) & 0x00004000); |
| 67 | } |
| 68 | |
Ben Skeggs | 4e7659f | 2015-01-14 15:02:59 +1000 | [diff] [blame^] | 69 | struct nvkm_oclass * |
| 70 | gf110_gpio_oclass = &(struct nvkm_gpio_impl) { |
Ben Skeggs | 7356859 | 2014-05-12 15:22:42 +1000 | [diff] [blame] | 71 | .base.handle = NV_SUBDEV(GPIO, 0xd0), |
Ben Skeggs | 4e7659f | 2015-01-14 15:02:59 +1000 | [diff] [blame^] | 72 | .base.ofuncs = &(struct nvkm_ofuncs) { |
| 73 | .ctor = _nvkm_gpio_ctor, |
| 74 | .dtor = _nvkm_gpio_dtor, |
| 75 | .init = _nvkm_gpio_init, |
| 76 | .fini = _nvkm_gpio_fini, |
Ben Skeggs | e0996ae | 2012-07-10 12:20:17 +1000 | [diff] [blame] | 77 | }, |
Ben Skeggs | 7356859 | 2014-05-12 15:22:42 +1000 | [diff] [blame] | 78 | .lines = 32, |
Ben Skeggs | 4e7659f | 2015-01-14 15:02:59 +1000 | [diff] [blame^] | 79 | .intr_stat = g94_gpio_intr_stat, |
| 80 | .intr_mask = g94_gpio_intr_mask, |
| 81 | .drive = gf110_gpio_drive, |
| 82 | .sense = gf110_gpio_sense, |
| 83 | .reset = gf110_gpio_reset, |
Ben Skeggs | 7356859 | 2014-05-12 15:22:42 +1000 | [diff] [blame] | 84 | }.base; |