0f8d2a2b9f
i915_{save,restore}_state() are actually all about the display.
Currently they are split into display part + SWF part. But since
the SWF part is also related to the display let's just move that
part into its own thing and flip the roles around so that the
current display part is the main function.
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20201005171441.26612-1-ville.syrjala@linux.intel.com
Reviewed-by: Jani Nikula <jani.nikula@intel.com>
121 lines
3.7 KiB
C
121 lines
3.7 KiB
C
/*
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*
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* Copyright 2008 (c) Intel Corporation
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* Jesse Barnes <jbarnes@virtuousgeek.org>
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the
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* "Software"), to deal in the Software without restriction, including
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* without limitation the rights to use, copy, modify, merge, publish,
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* distribute, sub license, and/or sell copies of the Software, and to
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* permit persons to whom the Software is furnished to do so, subject to
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* the following conditions:
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*
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* The above copyright notice and this permission notice (including the
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* next paragraph) shall be included in all copies or substantial portions
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* of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
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* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
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* IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR
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* ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
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* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
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* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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*/
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#include "display/intel_fbc.h"
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#include "display/intel_gmbus.h"
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#include "display/intel_vga.h"
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#include "i915_drv.h"
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#include "i915_reg.h"
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#include "i915_suspend.h"
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static void intel_save_swf(struct drm_i915_private *dev_priv)
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{
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int i;
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/* Scratch space */
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if (IS_GEN(dev_priv, 2) && IS_MOBILE(dev_priv)) {
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for (i = 0; i < 7; i++) {
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dev_priv->regfile.saveSWF0[i] = I915_READ(SWF0(i));
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dev_priv->regfile.saveSWF1[i] = I915_READ(SWF1(i));
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}
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for (i = 0; i < 3; i++)
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dev_priv->regfile.saveSWF3[i] = I915_READ(SWF3(i));
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} else if (IS_GEN(dev_priv, 2)) {
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for (i = 0; i < 7; i++)
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dev_priv->regfile.saveSWF1[i] = I915_READ(SWF1(i));
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} else if (HAS_GMCH(dev_priv)) {
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for (i = 0; i < 16; i++) {
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dev_priv->regfile.saveSWF0[i] = I915_READ(SWF0(i));
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dev_priv->regfile.saveSWF1[i] = I915_READ(SWF1(i));
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}
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for (i = 0; i < 3; i++)
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dev_priv->regfile.saveSWF3[i] = I915_READ(SWF3(i));
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}
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}
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static void intel_restore_swf(struct drm_i915_private *dev_priv)
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{
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int i;
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/* Scratch space */
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if (IS_GEN(dev_priv, 2) && IS_MOBILE(dev_priv)) {
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for (i = 0; i < 7; i++) {
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I915_WRITE(SWF0(i), dev_priv->regfile.saveSWF0[i]);
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I915_WRITE(SWF1(i), dev_priv->regfile.saveSWF1[i]);
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}
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for (i = 0; i < 3; i++)
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I915_WRITE(SWF3(i), dev_priv->regfile.saveSWF3[i]);
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} else if (IS_GEN(dev_priv, 2)) {
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for (i = 0; i < 7; i++)
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I915_WRITE(SWF1(i), dev_priv->regfile.saveSWF1[i]);
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} else if (HAS_GMCH(dev_priv)) {
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for (i = 0; i < 16; i++) {
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I915_WRITE(SWF0(i), dev_priv->regfile.saveSWF0[i]);
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I915_WRITE(SWF1(i), dev_priv->regfile.saveSWF1[i]);
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}
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for (i = 0; i < 3; i++)
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I915_WRITE(SWF3(i), dev_priv->regfile.saveSWF3[i]);
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}
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}
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void i915_save_display(struct drm_i915_private *dev_priv)
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{
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struct pci_dev *pdev = dev_priv->drm.pdev;
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/* Display arbitration control */
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if (INTEL_GEN(dev_priv) <= 4)
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dev_priv->regfile.saveDSPARB = I915_READ(DSPARB);
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if (IS_GEN(dev_priv, 4))
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pci_read_config_word(pdev, GCDGMBUS,
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&dev_priv->regfile.saveGCDGMBUS);
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intel_save_swf(dev_priv);
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}
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void i915_restore_display(struct drm_i915_private *dev_priv)
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{
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struct pci_dev *pdev = dev_priv->drm.pdev;
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intel_restore_swf(dev_priv);
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if (IS_GEN(dev_priv, 4))
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pci_write_config_word(pdev, GCDGMBUS,
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dev_priv->regfile.saveGCDGMBUS);
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/* Display arbitration */
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if (INTEL_GEN(dev_priv) <= 4)
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I915_WRITE(DSPARB, dev_priv->regfile.saveDSPARB);
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/* only restore FBC info on the platform that supports FBC*/
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intel_fbc_global_disable(dev_priv);
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intel_vga_redisable(dev_priv);
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intel_gmbus_reset(dev_priv);
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}
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