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1/*
2 *
3 * Copyright 2008 (c) Intel Corporation
4 * Jesse Barnes <jbarnes@virtuousgeek.org>
5 *
6 * Permission is hereby granted, free of charge, to any person obtaining a
7 * copy of this software and associated documentation files (the
8 * "Software"), to deal in the Software without restriction, including
9 * without limitation the rights to use, copy, modify, merge, publish,
10 * distribute, sub license, and/or sell copies of the Software, and to
11 * permit persons to whom the Software is furnished to do so, subject to
12 * the following conditions:
13 *
14 * The above copyright notice and this permission notice (including the
15 * next paragraph) shall be included in all copies or substantial portions
16 * of the Software.
17 *
18 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
19 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
20 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
21 * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR
22 * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
23 * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
24 * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
25 */
26
27#include <drm/drmP.h>
28#include <drm/i915_drm.h>
29#include "intel_drv.h"
30#include "i915_reg.h"
31
32static void i915_save_display(struct drm_device *dev)
33{
34 struct drm_i915_private *dev_priv = dev->dev_private;
35
36 /* Display arbitration control */
37 if (INTEL_INFO(dev)->gen <= 4)
38 dev_priv->regfile.saveDSPARB = I915_READ(DSPARB);
39
40 /* LVDS state */
41 if (HAS_PCH_IBX(dev) || HAS_PCH_CPT(dev))
42 dev_priv->regfile.saveLVDS = I915_READ(PCH_LVDS);
43 else if (INTEL_INFO(dev)->gen <= 4 && IS_MOBILE(dev) && !IS_I830(dev))
44 dev_priv->regfile.saveLVDS = I915_READ(LVDS);
45
46 /* Panel power sequencer */
47 if (HAS_PCH_SPLIT(dev)) {
48 dev_priv->regfile.savePP_CONTROL = I915_READ(PCH_PP_CONTROL);
49 dev_priv->regfile.savePP_ON_DELAYS = I915_READ(PCH_PP_ON_DELAYS);
50 dev_priv->regfile.savePP_OFF_DELAYS = I915_READ(PCH_PP_OFF_DELAYS);
51 dev_priv->regfile.savePP_DIVISOR = I915_READ(PCH_PP_DIVISOR);
52 } else if (INTEL_INFO(dev)->gen <= 4) {
53 dev_priv->regfile.savePP_CONTROL = I915_READ(PP_CONTROL);
54 dev_priv->regfile.savePP_ON_DELAYS = I915_READ(PP_ON_DELAYS);
55 dev_priv->regfile.savePP_OFF_DELAYS = I915_READ(PP_OFF_DELAYS);
56 dev_priv->regfile.savePP_DIVISOR = I915_READ(PP_DIVISOR);
57 }
58
59 /* save FBC interval */
60 if (HAS_FBC(dev) && INTEL_INFO(dev)->gen <= 4 && !IS_G4X(dev))
61 dev_priv->regfile.saveFBC_CONTROL = I915_READ(FBC_CONTROL);
62}
63
64static void i915_restore_display(struct drm_device *dev)
65{
66 struct drm_i915_private *dev_priv = dev->dev_private;
67 u32 mask = 0xffffffff;
68
69 /* Display arbitration */
70 if (INTEL_INFO(dev)->gen <= 4)
71 I915_WRITE(DSPARB, dev_priv->regfile.saveDSPARB);
72
73 mask = ~LVDS_PORT_EN;
74
75 /* LVDS state */
76 if (HAS_PCH_IBX(dev) || HAS_PCH_CPT(dev))
77 I915_WRITE(PCH_LVDS, dev_priv->regfile.saveLVDS & mask);
78 else if (INTEL_INFO(dev)->gen <= 4 && IS_MOBILE(dev) && !IS_I830(dev))
79 I915_WRITE(LVDS, dev_priv->regfile.saveLVDS & mask);
80
81 /* Panel power sequencer */
82 if (HAS_PCH_SPLIT(dev)) {
83 I915_WRITE(PCH_PP_ON_DELAYS, dev_priv->regfile.savePP_ON_DELAYS);
84 I915_WRITE(PCH_PP_OFF_DELAYS, dev_priv->regfile.savePP_OFF_DELAYS);
85 I915_WRITE(PCH_PP_DIVISOR, dev_priv->regfile.savePP_DIVISOR);
86 I915_WRITE(PCH_PP_CONTROL, dev_priv->regfile.savePP_CONTROL);
87 } else if (INTEL_INFO(dev)->gen <= 4) {
88 I915_WRITE(PP_ON_DELAYS, dev_priv->regfile.savePP_ON_DELAYS);
89 I915_WRITE(PP_OFF_DELAYS, dev_priv->regfile.savePP_OFF_DELAYS);
90 I915_WRITE(PP_DIVISOR, dev_priv->regfile.savePP_DIVISOR);
91 I915_WRITE(PP_CONTROL, dev_priv->regfile.savePP_CONTROL);
92 }
93
94 /* only restore FBC info on the platform that supports FBC*/
95 intel_fbc_global_disable(dev_priv);
96
97 /* restore FBC interval */
98 if (HAS_FBC(dev) && INTEL_INFO(dev)->gen <= 4 && !IS_G4X(dev))
99 I915_WRITE(FBC_CONTROL, dev_priv->regfile.saveFBC_CONTROL);
100
101 i915_redisable_vga(dev);
102}
103
104int i915_save_state(struct drm_device *dev)
105{
106 struct drm_i915_private *dev_priv = dev->dev_private;
107 int i;
108
109 mutex_lock(&dev->struct_mutex);
110
111 i915_save_display(dev);
112
113 if (IS_GEN4(dev))
114 pci_read_config_word(dev->pdev, GCDGMBUS,
115 &dev_priv->regfile.saveGCDGMBUS);
116
117 /* Cache mode state */
118 if (INTEL_INFO(dev)->gen < 7)
119 dev_priv->regfile.saveCACHE_MODE_0 = I915_READ(CACHE_MODE_0);
120
121 /* Memory Arbitration state */
122 dev_priv->regfile.saveMI_ARB_STATE = I915_READ(MI_ARB_STATE);
123
124 /* Scratch space */
125 if (IS_GEN2(dev_priv) && IS_MOBILE(dev_priv)) {
126 for (i = 0; i < 7; i++) {
127 dev_priv->regfile.saveSWF0[i] = I915_READ(SWF0(i));
128 dev_priv->regfile.saveSWF1[i] = I915_READ(SWF1(i));
129 }
130 for (i = 0; i < 3; i++)
131 dev_priv->regfile.saveSWF3[i] = I915_READ(SWF3(i));
132 } else if (IS_GEN2(dev_priv)) {
133 for (i = 0; i < 7; i++)
134 dev_priv->regfile.saveSWF1[i] = I915_READ(SWF1(i));
135 } else if (HAS_GMCH_DISPLAY(dev_priv)) {
136 for (i = 0; i < 16; i++) {
137 dev_priv->regfile.saveSWF0[i] = I915_READ(SWF0(i));
138 dev_priv->regfile.saveSWF1[i] = I915_READ(SWF1(i));
139 }
140 for (i = 0; i < 3; i++)
141 dev_priv->regfile.saveSWF3[i] = I915_READ(SWF3(i));
142 }
143
144 mutex_unlock(&dev->struct_mutex);
145
146 return 0;
147}
148
149int i915_restore_state(struct drm_device *dev)
150{
151 struct drm_i915_private *dev_priv = dev->dev_private;
152 int i;
153
154 mutex_lock(&dev->struct_mutex);
155
156 i915_gem_restore_fences(dev);
157
158 if (IS_GEN4(dev))
159 pci_write_config_word(dev->pdev, GCDGMBUS,
160 dev_priv->regfile.saveGCDGMBUS);
161 i915_restore_display(dev);
162
163 /* Cache mode state */
164 if (INTEL_INFO(dev)->gen < 7)
165 I915_WRITE(CACHE_MODE_0, dev_priv->regfile.saveCACHE_MODE_0 |
166 0xffff0000);
167
168 /* Memory arbitration state */
169 I915_WRITE(MI_ARB_STATE, dev_priv->regfile.saveMI_ARB_STATE | 0xffff0000);
170
171 /* Scratch space */
172 if (IS_GEN2(dev_priv) && IS_MOBILE(dev_priv)) {
173 for (i = 0; i < 7; i++) {
174 I915_WRITE(SWF0(i), dev_priv->regfile.saveSWF0[i]);
175 I915_WRITE(SWF1(i), dev_priv->regfile.saveSWF1[i]);
176 }
177 for (i = 0; i < 3; i++)
178 I915_WRITE(SWF3(i), dev_priv->regfile.saveSWF3[i]);
179 } else if (IS_GEN2(dev_priv)) {
180 for (i = 0; i < 7; i++)
181 I915_WRITE(SWF1(i), dev_priv->regfile.saveSWF1[i]);
182 } else if (HAS_GMCH_DISPLAY(dev_priv)) {
183 for (i = 0; i < 16; i++) {
184 I915_WRITE(SWF0(i), dev_priv->regfile.saveSWF0[i]);
185 I915_WRITE(SWF1(i), dev_priv->regfile.saveSWF1[i]);
186 }
187 for (i = 0; i < 3; i++)
188 I915_WRITE(SWF3(i), dev_priv->regfile.saveSWF3[i]);
189 }
190
191 mutex_unlock(&dev->struct_mutex);
192
193 intel_i2c_reset(dev);
194
195 return 0;
196}
1/*
2 *
3 * Copyright 2008 (c) Intel Corporation
4 * Jesse Barnes <jbarnes@virtuousgeek.org>
5 *
6 * Permission is hereby granted, free of charge, to any person obtaining a
7 * copy of this software and associated documentation files (the
8 * "Software"), to deal in the Software without restriction, including
9 * without limitation the rights to use, copy, modify, merge, publish,
10 * distribute, sub license, and/or sell copies of the Software, and to
11 * permit persons to whom the Software is furnished to do so, subject to
12 * the following conditions:
13 *
14 * The above copyright notice and this permission notice (including the
15 * next paragraph) shall be included in all copies or substantial portions
16 * of the Software.
17 *
18 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
19 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
20 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
21 * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR
22 * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
23 * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
24 * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
25 */
26
27#include <drm/i915_drm.h>
28
29#include "display/intel_fbc.h"
30#include "display/intel_gmbus.h"
31
32#include "i915_drv.h"
33#include "i915_reg.h"
34#include "i915_suspend.h"
35
36static void i915_save_display(struct drm_i915_private *dev_priv)
37{
38 /* Display arbitration control */
39 if (INTEL_GEN(dev_priv) <= 4)
40 dev_priv->regfile.saveDSPARB = I915_READ(DSPARB);
41
42 /* save FBC interval */
43 if (HAS_FBC(dev_priv) && INTEL_GEN(dev_priv) <= 4 && !IS_G4X(dev_priv))
44 dev_priv->regfile.saveFBC_CONTROL = I915_READ(FBC_CONTROL);
45}
46
47static void i915_restore_display(struct drm_i915_private *dev_priv)
48{
49 /* Display arbitration */
50 if (INTEL_GEN(dev_priv) <= 4)
51 I915_WRITE(DSPARB, dev_priv->regfile.saveDSPARB);
52
53 /* only restore FBC info on the platform that supports FBC*/
54 intel_fbc_global_disable(dev_priv);
55
56 /* restore FBC interval */
57 if (HAS_FBC(dev_priv) && INTEL_GEN(dev_priv) <= 4 && !IS_G4X(dev_priv))
58 I915_WRITE(FBC_CONTROL, dev_priv->regfile.saveFBC_CONTROL);
59
60 i915_redisable_vga(dev_priv);
61}
62
63int i915_save_state(struct drm_i915_private *dev_priv)
64{
65 struct pci_dev *pdev = dev_priv->drm.pdev;
66 int i;
67
68 mutex_lock(&dev_priv->drm.struct_mutex);
69
70 i915_save_display(dev_priv);
71
72 if (IS_GEN(dev_priv, 4))
73 pci_read_config_word(pdev, GCDGMBUS,
74 &dev_priv->regfile.saveGCDGMBUS);
75
76 /* Cache mode state */
77 if (INTEL_GEN(dev_priv) < 7)
78 dev_priv->regfile.saveCACHE_MODE_0 = I915_READ(CACHE_MODE_0);
79
80 /* Memory Arbitration state */
81 dev_priv->regfile.saveMI_ARB_STATE = I915_READ(MI_ARB_STATE);
82
83 /* Scratch space */
84 if (IS_GEN(dev_priv, 2) && IS_MOBILE(dev_priv)) {
85 for (i = 0; i < 7; i++) {
86 dev_priv->regfile.saveSWF0[i] = I915_READ(SWF0(i));
87 dev_priv->regfile.saveSWF1[i] = I915_READ(SWF1(i));
88 }
89 for (i = 0; i < 3; i++)
90 dev_priv->regfile.saveSWF3[i] = I915_READ(SWF3(i));
91 } else if (IS_GEN(dev_priv, 2)) {
92 for (i = 0; i < 7; i++)
93 dev_priv->regfile.saveSWF1[i] = I915_READ(SWF1(i));
94 } else if (HAS_GMCH(dev_priv)) {
95 for (i = 0; i < 16; i++) {
96 dev_priv->regfile.saveSWF0[i] = I915_READ(SWF0(i));
97 dev_priv->regfile.saveSWF1[i] = I915_READ(SWF1(i));
98 }
99 for (i = 0; i < 3; i++)
100 dev_priv->regfile.saveSWF3[i] = I915_READ(SWF3(i));
101 }
102
103 mutex_unlock(&dev_priv->drm.struct_mutex);
104
105 return 0;
106}
107
108int i915_restore_state(struct drm_i915_private *dev_priv)
109{
110 struct pci_dev *pdev = dev_priv->drm.pdev;
111 int i;
112
113 mutex_lock(&dev_priv->drm.struct_mutex);
114
115 if (IS_GEN(dev_priv, 4))
116 pci_write_config_word(pdev, GCDGMBUS,
117 dev_priv->regfile.saveGCDGMBUS);
118 i915_restore_display(dev_priv);
119
120 /* Cache mode state */
121 if (INTEL_GEN(dev_priv) < 7)
122 I915_WRITE(CACHE_MODE_0, dev_priv->regfile.saveCACHE_MODE_0 |
123 0xffff0000);
124
125 /* Memory arbitration state */
126 I915_WRITE(MI_ARB_STATE, dev_priv->regfile.saveMI_ARB_STATE | 0xffff0000);
127
128 /* Scratch space */
129 if (IS_GEN(dev_priv, 2) && IS_MOBILE(dev_priv)) {
130 for (i = 0; i < 7; i++) {
131 I915_WRITE(SWF0(i), dev_priv->regfile.saveSWF0[i]);
132 I915_WRITE(SWF1(i), dev_priv->regfile.saveSWF1[i]);
133 }
134 for (i = 0; i < 3; i++)
135 I915_WRITE(SWF3(i), dev_priv->regfile.saveSWF3[i]);
136 } else if (IS_GEN(dev_priv, 2)) {
137 for (i = 0; i < 7; i++)
138 I915_WRITE(SWF1(i), dev_priv->regfile.saveSWF1[i]);
139 } else if (HAS_GMCH(dev_priv)) {
140 for (i = 0; i < 16; i++) {
141 I915_WRITE(SWF0(i), dev_priv->regfile.saveSWF0[i]);
142 I915_WRITE(SWF1(i), dev_priv->regfile.saveSWF1[i]);
143 }
144 for (i = 0; i < 3; i++)
145 I915_WRITE(SWF3(i), dev_priv->regfile.saveSWF3[i]);
146 }
147
148 mutex_unlock(&dev_priv->drm.struct_mutex);
149
150 intel_gmbus_reset(dev_priv);
151
152 return 0;
153}