Ben Skeggs | 4528416 | 2010-04-07 12:57:35 +1000 | [diff] [blame] | 1 | /* |
| 2 | * Copyright 2010 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 | */ |
| 24 | |
| 25 | #include "drmP.h" |
| 26 | #include "nouveau_drv.h" |
| 27 | #include "nouveau_hw.h" |
Ben Skeggs | a0b2563 | 2011-11-21 16:41:48 +1000 | [diff] [blame] | 28 | #include "nouveau_gpio.h" |
Ben Skeggs | 4528416 | 2010-04-07 12:57:35 +1000 | [diff] [blame] | 29 | |
Ben Skeggs | 19b7fc7 | 2010-11-03 10:27:27 +1000 | [diff] [blame] | 30 | #include "nv50_display.h" |
| 31 | |
Ben Skeggs | 4528416 | 2010-04-07 12:57:35 +1000 | [diff] [blame] | 32 | static int |
Ben Skeggs | a0b2563 | 2011-11-21 16:41:48 +1000 | [diff] [blame] | 33 | nv50_gpio_location(int line, u32 *reg, u32 *shift) |
Ben Skeggs | 4528416 | 2010-04-07 12:57:35 +1000 | [diff] [blame] | 34 | { |
| 35 | const uint32_t nv50_gpio_reg[4] = { 0xe104, 0xe108, 0xe280, 0xe284 }; |
| 36 | |
Ben Skeggs | a0b2563 | 2011-11-21 16:41:48 +1000 | [diff] [blame] | 37 | if (line >= 32) |
Ben Skeggs | 4528416 | 2010-04-07 12:57:35 +1000 | [diff] [blame] | 38 | return -EINVAL; |
| 39 | |
Ben Skeggs | a0b2563 | 2011-11-21 16:41:48 +1000 | [diff] [blame] | 40 | *reg = nv50_gpio_reg[line >> 3]; |
| 41 | *shift = (line & 7) << 2; |
Ben Skeggs | 4528416 | 2010-04-07 12:57:35 +1000 | [diff] [blame] | 42 | return 0; |
| 43 | } |
| 44 | |
| 45 | int |
Ben Skeggs | a0b2563 | 2011-11-21 16:41:48 +1000 | [diff] [blame] | 46 | nv50_gpio_drive(struct drm_device *dev, int line, int dir, int out) |
Ben Skeggs | 4528416 | 2010-04-07 12:57:35 +1000 | [diff] [blame] | 47 | { |
Ben Skeggs | a0b2563 | 2011-11-21 16:41:48 +1000 | [diff] [blame] | 48 | u32 reg, shift; |
Ben Skeggs | 4528416 | 2010-04-07 12:57:35 +1000 | [diff] [blame] | 49 | |
Ben Skeggs | a0b2563 | 2011-11-21 16:41:48 +1000 | [diff] [blame] | 50 | if (nv50_gpio_location(line, ®, &shift)) |
Ben Skeggs | 4528416 | 2010-04-07 12:57:35 +1000 | [diff] [blame] | 51 | return -EINVAL; |
| 52 | |
Ben Skeggs | a0b2563 | 2011-11-21 16:41:48 +1000 | [diff] [blame] | 53 | nv_mask(dev, reg, 7 << shift, (((dir ^ 1) << 1) | out) << shift); |
| 54 | return 0; |
Ben Skeggs | 4528416 | 2010-04-07 12:57:35 +1000 | [diff] [blame] | 55 | } |
| 56 | |
| 57 | int |
Ben Skeggs | a0b2563 | 2011-11-21 16:41:48 +1000 | [diff] [blame] | 58 | nv50_gpio_sense(struct drm_device *dev, int line) |
Ben Skeggs | 4528416 | 2010-04-07 12:57:35 +1000 | [diff] [blame] | 59 | { |
Ben Skeggs | a0b2563 | 2011-11-21 16:41:48 +1000 | [diff] [blame] | 60 | u32 reg, shift; |
Ben Skeggs | 4528416 | 2010-04-07 12:57:35 +1000 | [diff] [blame] | 61 | |
Ben Skeggs | a0b2563 | 2011-11-21 16:41:48 +1000 | [diff] [blame] | 62 | if (nv50_gpio_location(line, ®, &shift)) |
Ben Skeggs | 4528416 | 2010-04-07 12:57:35 +1000 | [diff] [blame] | 63 | return -EINVAL; |
| 64 | |
Ben Skeggs | a0b2563 | 2011-11-21 16:41:48 +1000 | [diff] [blame] | 65 | return !!(nv_rd32(dev, reg) & (4 << shift)); |
Ben Skeggs | fce2bad | 2010-11-11 16:14:56 +1000 | [diff] [blame] | 66 | } |
| 67 | |
Ben Skeggs | d0875ed | 2010-07-23 11:31:08 +1000 | [diff] [blame] | 68 | void |
Ben Skeggs | a0b2563 | 2011-11-21 16:41:48 +1000 | [diff] [blame] | 69 | nv50_gpio_irq_enable(struct drm_device *dev, int line, bool on) |
Ben Skeggs | fce2bad | 2010-11-11 16:14:56 +1000 | [diff] [blame] | 70 | { |
Ben Skeggs | a0b2563 | 2011-11-21 16:41:48 +1000 | [diff] [blame] | 71 | u32 reg = line < 16 ? 0xe050 : 0xe070; |
| 72 | u32 mask = 0x00010001 << (line & 0xf); |
Ben Skeggs | d0875ed | 2010-07-23 11:31:08 +1000 | [diff] [blame] | 73 | |
| 74 | nv_wr32(dev, reg + 4, mask); |
Ben Skeggs | a0b2563 | 2011-11-21 16:41:48 +1000 | [diff] [blame] | 75 | nv_mask(dev, reg + 0, mask, on ? mask : 0); |
Ben Skeggs | fce2bad | 2010-11-11 16:14:56 +1000 | [diff] [blame] | 76 | } |
| 77 | |
Ben Skeggs | a0b2563 | 2011-11-21 16:41:48 +1000 | [diff] [blame] | 78 | int |
| 79 | nvd0_gpio_drive(struct drm_device *dev, int line, int dir, int out) |
Ben Skeggs | fce2bad | 2010-11-11 16:14:56 +1000 | [diff] [blame] | 80 | { |
Ben Skeggs | a0b2563 | 2011-11-21 16:41:48 +1000 | [diff] [blame] | 81 | u32 data = ((dir ^ 1) << 13) | (out << 12); |
| 82 | nv_mask(dev, 0x00d610 + (line * 4), 0x00003000, data); |
| 83 | nv_mask(dev, 0x00d604, 0x00000001, 0x00000001); /* update? */ |
Ben Skeggs | fce2bad | 2010-11-11 16:14:56 +1000 | [diff] [blame] | 84 | return 0; |
| 85 | } |
| 86 | |
Ben Skeggs | a0b2563 | 2011-11-21 16:41:48 +1000 | [diff] [blame] | 87 | int |
| 88 | nvd0_gpio_sense(struct drm_device *dev, int line) |
| 89 | { |
| 90 | return !!(nv_rd32(dev, 0x00d610 + (line * 4)) & 0x00004000); |
| 91 | } |
| 92 | |
Ben Skeggs | fce2bad | 2010-11-11 16:14:56 +1000 | [diff] [blame] | 93 | static void |
Ben Skeggs | a0b2563 | 2011-11-21 16:41:48 +1000 | [diff] [blame] | 94 | nv50_gpio_isr(struct drm_device *dev) |
Ben Skeggs | fce2bad | 2010-11-11 16:14:56 +1000 | [diff] [blame] | 95 | { |
| 96 | struct drm_nouveau_private *dev_priv = dev->dev_private; |
Ben Skeggs | a0b2563 | 2011-11-21 16:41:48 +1000 | [diff] [blame] | 97 | u32 intr0, intr1 = 0; |
| 98 | u32 hi, lo; |
Ben Skeggs | fce2bad | 2010-11-11 16:14:56 +1000 | [diff] [blame] | 99 | |
Ben Skeggs | a0b2563 | 2011-11-21 16:41:48 +1000 | [diff] [blame] | 100 | intr0 = nv_rd32(dev, 0xe054) & nv_rd32(dev, 0xe050); |
| 101 | if (dev_priv->chipset >= 0x90) |
| 102 | intr1 = nv_rd32(dev, 0xe074) & nv_rd32(dev, 0xe070); |
| 103 | |
| 104 | hi = (intr0 & 0x0000ffff) | (intr1 << 16); |
| 105 | lo = (intr0 >> 16) | (intr1 & 0xffff0000); |
| 106 | nouveau_gpio_isr(dev, 0, hi | lo); |
| 107 | |
| 108 | nv_wr32(dev, 0xe054, intr0); |
| 109 | if (dev_priv->chipset >= 0x90) |
| 110 | nv_wr32(dev, 0xe074, intr1); |
Ben Skeggs | d0875ed | 2010-07-23 11:31:08 +1000 | [diff] [blame] | 111 | } |
Ben Skeggs | ee2e013 | 2010-07-26 09:28:25 +1000 | [diff] [blame] | 112 | |
| 113 | int |
| 114 | nv50_gpio_init(struct drm_device *dev) |
| 115 | { |
| 116 | struct drm_nouveau_private *dev_priv = dev->dev_private; |
| 117 | |
| 118 | /* disable, and ack any pending gpio interrupts */ |
| 119 | nv_wr32(dev, 0xe050, 0x00000000); |
| 120 | nv_wr32(dev, 0xe054, 0xffffffff); |
| 121 | if (dev_priv->chipset >= 0x90) { |
| 122 | nv_wr32(dev, 0xe070, 0x00000000); |
| 123 | nv_wr32(dev, 0xe074, 0xffffffff); |
| 124 | } |
| 125 | |
Ben Skeggs | 2cbd4c8 | 2010-11-03 10:18:04 +1000 | [diff] [blame] | 126 | nouveau_irq_register(dev, 21, nv50_gpio_isr); |
Ben Skeggs | ee2e013 | 2010-07-26 09:28:25 +1000 | [diff] [blame] | 127 | return 0; |
| 128 | } |
Ben Skeggs | 2cbd4c8 | 2010-11-03 10:18:04 +1000 | [diff] [blame] | 129 | |
| 130 | void |
| 131 | nv50_gpio_fini(struct drm_device *dev) |
| 132 | { |
| 133 | struct drm_nouveau_private *dev_priv = dev->dev_private; |
| 134 | |
| 135 | nv_wr32(dev, 0xe050, 0x00000000); |
| 136 | if (dev_priv->chipset >= 0x90) |
| 137 | nv_wr32(dev, 0xe070, 0x00000000); |
| 138 | nouveau_irq_unregister(dev, 21); |
Ben Skeggs | 2cbd4c8 | 2010-11-03 10:18:04 +1000 | [diff] [blame] | 139 | } |