[linux-block.git] / drivers / gpu / drm / i915 / i915_suspend.c

/*
 *
 * Copyright 2008 (c) Intel Corporation
 *   Jesse Barnes <jbarnes@virtuousgeek.org>
 *
 * 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, sub license, 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 (including the
 * next paragraph) 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 NON-INFRINGEMENT.
 * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS 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 "display/intel_de.h"
#include "display/intel_gmbus.h"
#include "display/intel_vga.h"

#include "i915_drv.h"
#include "i915_reg.h"
#include "i915_suspend.h"
#include "intel_pci_config.h"

static void intel_save_swf(struct drm_i915_private *dev_priv)
{
	int i;

	/* Scratch space */
	if (GRAPHICS_VER(dev_priv) == 2 && IS_MOBILE(dev_priv)) {
		for (i = 0; i < 7; i++) {
			dev_priv->regfile.saveSWF0[i] = intel_de_read(dev_priv,
								      SWF0(dev_priv, i));
			dev_priv->regfile.saveSWF1[i] = intel_de_read(dev_priv,
								      SWF1(dev_priv, i));
		}
		for (i = 0; i < 3; i++)
			dev_priv->regfile.saveSWF3[i] = intel_de_read(dev_priv,
								      SWF3(dev_priv, i));
	} else if (GRAPHICS_VER(dev_priv) == 2) {
		for (i = 0; i < 7; i++)
			dev_priv->regfile.saveSWF1[i] = intel_de_read(dev_priv,
								      SWF1(dev_priv, i));
	} else if (HAS_GMCH(dev_priv)) {
		for (i = 0; i < 16; i++) {
			dev_priv->regfile.saveSWF0[i] = intel_de_read(dev_priv,
								      SWF0(dev_priv, i));
			dev_priv->regfile.saveSWF1[i] = intel_de_read(dev_priv,
								      SWF1(dev_priv, i));
		}
		for (i = 0; i < 3; i++)
			dev_priv->regfile.saveSWF3[i] = intel_de_read(dev_priv,
								      SWF3(dev_priv, i));
	}
}

static void intel_restore_swf(struct drm_i915_private *dev_priv)
{
	int i;

	/* Scratch space */
	if (GRAPHICS_VER(dev_priv) == 2 && IS_MOBILE(dev_priv)) {
		for (i = 0; i < 7; i++) {
			intel_de_write(dev_priv, SWF0(dev_priv, i),
				       dev_priv->regfile.saveSWF0[i]);
			intel_de_write(dev_priv, SWF1(dev_priv, i),
				       dev_priv->regfile.saveSWF1[i]);
		}
		for (i = 0; i < 3; i++)
			intel_de_write(dev_priv, SWF3(dev_priv, i),
				       dev_priv->regfile.saveSWF3[i]);
	} else if (GRAPHICS_VER(dev_priv) == 2) {
		for (i = 0; i < 7; i++)
			intel_de_write(dev_priv, SWF1(dev_priv, i),
				       dev_priv->regfile.saveSWF1[i]);
	} else if (HAS_GMCH(dev_priv)) {
		for (i = 0; i < 16; i++) {
			intel_de_write(dev_priv, SWF0(dev_priv, i),
				       dev_priv->regfile.saveSWF0[i]);
			intel_de_write(dev_priv, SWF1(dev_priv, i),
				       dev_priv->regfile.saveSWF1[i]);
		}
		for (i = 0; i < 3; i++)
			intel_de_write(dev_priv, SWF3(dev_priv, i),
				       dev_priv->regfile.saveSWF3[i]);
	}
}

void i915_save_display(struct drm_i915_private *dev_priv)
{
	struct pci_dev *pdev = to_pci_dev(dev_priv->drm.dev);

	if (!HAS_DISPLAY(dev_priv))
		return;

	/* Display arbitration control */
	if (GRAPHICS_VER(dev_priv) <= 4)
		dev_priv->regfile.saveDSPARB = intel_de_read(dev_priv,
							     DSPARB(dev_priv));

	if (GRAPHICS_VER(dev_priv) == 4)
		pci_read_config_word(pdev, GCDGMBUS,
				     &dev_priv->regfile.saveGCDGMBUS);

	intel_save_swf(dev_priv);
}

void i915_restore_display(struct drm_i915_private *dev_priv)
{
	struct pci_dev *pdev = to_pci_dev(dev_priv->drm.dev);

	if (!HAS_DISPLAY(dev_priv))
		return;

	intel_restore_swf(dev_priv);

	if (GRAPHICS_VER(dev_priv) == 4)
		pci_write_config_word(pdev, GCDGMBUS,
				      dev_priv->regfile.saveGCDGMBUS);

	/* Display arbitration */
	if (GRAPHICS_VER(dev_priv) <= 4)
		intel_de_write(dev_priv, DSPARB(dev_priv),
			       dev_priv->regfile.saveDSPARB);

	intel_vga_redisable(dev_priv);

	intel_gmbus_reset(dev_priv);
}
Commit	Line	Data
317c35d1 JB	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
77895af2	27	#include "display/intel_de.h"
379bc100	28	#include "display/intel_gmbus.h"
4fb87831	29	#include "display/intel_vga.h"
379bc100	30
6da4a2c4	31	#include "i915_drv.h"
5e5b7fa2	32	#include "i915_reg.h"
bdd1510c	33	#include "i915_suspend.h"
7e470f10	34	#include "intel_pci_config.h"
317c35d1	35
0f8d2a2b	36	static void intel_save_swf(struct drm_i915_private *dev_priv)
1341d655	37	{
1341d655 BG	38	int i;
1341d655 BG	39
1341d655	40	/* Scratch space */
651e7d48	41	if (GRAPHICS_VER(dev_priv) == 2 && IS_MOBILE(dev_priv)) {
85fa792b	42	for (i = 0; i < 7; i++) {
3b24925e JN	43	dev_priv->regfile.saveSWF0[i] = intel_de_read(dev_priv,
3b24925e JN	44	SWF0(dev_priv, i));
eefd93d8 JN	45	dev_priv->regfile.saveSWF1[i] = intel_de_read(dev_priv,
eefd93d8 JN	46	SWF1(dev_priv, i));
85fa792b VS	47	}
85fa792b VS	48	for (i = 0; i < 3; i++)
b9089184 JN	49	dev_priv->regfile.saveSWF3[i] = intel_de_read(dev_priv,
b9089184 JN	50	SWF3(dev_priv, i));
651e7d48	51	} else if (GRAPHICS_VER(dev_priv) == 2) {
85fa792b	52	for (i = 0; i < 7; i++)
eefd93d8 JN	53	dev_priv->regfile.saveSWF1[i] = intel_de_read(dev_priv,
eefd93d8 JN	54	SWF1(dev_priv, i));
b2ae318a	55	} else if (HAS_GMCH(dev_priv)) {
85fa792b	56	for (i = 0; i < 16; i++) {
3b24925e JN	57	dev_priv->regfile.saveSWF0[i] = intel_de_read(dev_priv,
3b24925e JN	58	SWF0(dev_priv, i));
eefd93d8 JN	59	dev_priv->regfile.saveSWF1[i] = intel_de_read(dev_priv,
eefd93d8 JN	60	SWF1(dev_priv, i));
85fa792b VS	61	}
85fa792b VS	62	for (i = 0; i < 3; i++)
b9089184 JN	63	dev_priv->regfile.saveSWF3[i] = intel_de_read(dev_priv,
b9089184 JN	64	SWF3(dev_priv, i));
1341d655	65	}
1341d655 BG	66	}
1341d655 BG	67
0f8d2a2b	68	static void intel_restore_swf(struct drm_i915_private *dev_priv)
1341d655	69	{
1341d655 BG	70	int i;
1341d655 BG	71
85fa792b	72	/* Scratch space */
651e7d48	73	if (GRAPHICS_VER(dev_priv) == 2 && IS_MOBILE(dev_priv)) {
85fa792b	74	for (i = 0; i < 7; i++) {
3b24925e JN	75	intel_de_write(dev_priv, SWF0(dev_priv, i),
3b24925e JN	76	dev_priv->regfile.saveSWF0[i]);
eefd93d8 JN	77	intel_de_write(dev_priv, SWF1(dev_priv, i),
eefd93d8 JN	78	dev_priv->regfile.saveSWF1[i]);
85fa792b VS	79	}
85fa792b VS	80	for (i = 0; i < 3; i++)
b9089184 JN	81	intel_de_write(dev_priv, SWF3(dev_priv, i),
b9089184 JN	82	dev_priv->regfile.saveSWF3[i]);
651e7d48	83	} else if (GRAPHICS_VER(dev_priv) == 2) {
85fa792b	84	for (i = 0; i < 7; i++)
eefd93d8 JN	85	intel_de_write(dev_priv, SWF1(dev_priv, i),
eefd93d8 JN	86	dev_priv->regfile.saveSWF1[i]);
b2ae318a	87	} else if (HAS_GMCH(dev_priv)) {
85fa792b	88	for (i = 0; i < 16; i++) {
3b24925e JN	89	intel_de_write(dev_priv, SWF0(dev_priv, i),
3b24925e JN	90	dev_priv->regfile.saveSWF0[i]);
eefd93d8 JN	91	intel_de_write(dev_priv, SWF1(dev_priv, i),
eefd93d8 JN	92	dev_priv->regfile.saveSWF1[i]);
85fa792b VS	93	}
85fa792b VS	94	for (i = 0; i < 3; i++)
b9089184 JN	95	intel_de_write(dev_priv, SWF3(dev_priv, i),
b9089184 JN	96	dev_priv->regfile.saveSWF3[i]);
317c35d1	97	}
0f8d2a2b VS	98	}
	99
	100	void i915_save_display(struct drm_i915_private *dev_priv)
	101	{
8ff5446a	102	struct pci_dev *pdev = to_pci_dev(dev_priv->drm.dev);
0f8d2a2b	103
5df7bd13 JRS	104	if (!HAS_DISPLAY(dev_priv))
	105	return;
	106
0f8d2a2b	107	/* Display arbitration control */
651e7d48	108	if (GRAPHICS_VER(dev_priv) <= 4)
f0fea981 JN	109	dev_priv->regfile.saveDSPARB = intel_de_read(dev_priv,
f0fea981 JN	110	DSPARB(dev_priv));
317c35d1	111
651e7d48	112	if (GRAPHICS_VER(dev_priv) == 4)
0f8d2a2b VS	113	pci_read_config_word(pdev, GCDGMBUS,
	114	&dev_priv->regfile.saveGCDGMBUS);
	115
	116	intel_save_swf(dev_priv);
	117	}
	118
	119	void i915_restore_display(struct drm_i915_private *dev_priv)
	120	{
8ff5446a	121	struct pci_dev *pdev = to_pci_dev(dev_priv->drm.dev);
0f8d2a2b	122
5df7bd13 JRS	123	if (!HAS_DISPLAY(dev_priv))
	124	return;
	125
0f8d2a2b VS	126	intel_restore_swf(dev_priv);
0f8d2a2b VS	127
651e7d48	128	if (GRAPHICS_VER(dev_priv) == 4)
0f8d2a2b VS	129	pci_write_config_word(pdev, GCDGMBUS,
	130	dev_priv->regfile.saveGCDGMBUS);
	131
	132	/* Display arbitration */
651e7d48	133	if (GRAPHICS_VER(dev_priv) <= 4)
f0fea981 JN	134	intel_de_write(dev_priv, DSPARB(dev_priv),
f0fea981 JN	135	dev_priv->regfile.saveDSPARB);
0f8d2a2b	136
0f8d2a2b VS	137	intel_vga_redisable(dev_priv);
	138
	139	intel_gmbus_reset(dev_priv);
317c35d1	140	}