From: Ville Syrjälä <ville.syrjala@xxxxxxxxxxxxxxx>
No idea if we might want these. Perhaps there is a "keep your paws off
my GPU" bit in there somewhere to avoid BIOS crap?
Signed-off-by: Ville Syrjälä <ville.syrjala@xxxxxxxxxxxxxxx>
---
drivers/gpu/drm/i915/i915_drv.h | 13 ++++++++++---
drivers/gpu/drm/i915/i915_reg.h | 1 +
drivers/gpu/drm/i915/i915_suspend.c | 6 ++++++
3 files changed, 17 insertions(+), 3 deletions(-)
diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h
index cfac5c3..88ab00b 100644
--- a/drivers/gpu/drm/i915/i915_drv.h
+++ b/drivers/gpu/drm/i915/i915_drv.h
@@ -1016,9 +1016,16 @@ struct i915_suspend_saved_registers {
u32 saveFBC_CONTROL;
u32 saveCACHE_MODE_0;
u32 saveMI_ARB_STATE;
- u32 saveSWF0[16];
- u32 saveSWF1[16];
- u32 saveSWF3[3];
+ union {
+ struct {
+ u32 saveSWF0[16];
+ u32 saveSWF1[16];
+ u32 saveSWF3[3];
+ };
+ struct {
+ u32 saveSWF_ILK[36];
+ };
+ };
uint64_t saveFENCE[I915_MAX_NUM_FENCES];
u32 savePCH_PORT_HOTPLUG;
u16 saveGCDGMBUS;
diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h
index 2478267..96fd0f5 100644
--- a/drivers/gpu/drm/i915/i915_reg.h
+++ b/drivers/gpu/drm/i915/i915_reg.h
@@ -5030,6 +5030,7 @@ enum skl_disp_power_wells {
#define SWF0(i) (dev_priv->info.display_mmio_offset + 0x70410 + (i) * 4)
#define SWF1(i) (dev_priv->info.display_mmio_offset + 0x71410 + (i) * 4)
#define SWF3(i) (dev_priv->info.display_mmio_offset + 0x72414 + (i) * 4)
+#define SWF_ILK(i) (0x4F000 + (i) * 4)
/* Pipe B */
#define _PIPEBDSL (dev_priv->info.display_mmio_offset + 0x71000)
diff --git a/drivers/gpu/drm/i915/i915_suspend.c b/drivers/gpu/drm/i915/i915_suspend.c
index 2d91821..297afe9 100644
--- a/drivers/gpu/drm/i915/i915_suspend.c
+++ b/drivers/gpu/drm/i915/i915_suspend.c
@@ -139,6 +139,9 @@ int i915_save_state(struct drm_device *dev)
}
for (i = 0; i < 3; i++)
dev_priv->regfile.saveSWF3[i] = I915_READ(SWF3(i));
+ } else {
+ for (i = 0; i < 36; i++)
+ dev_priv->regfile.saveSWF_ILK[i] = I915_READ(SWF_ILK(i));
}
mutex_unlock(&dev->struct_mutex);
@@ -186,6 +189,9 @@ int i915_restore_state(struct drm_device *dev)
}
for (i = 0; i < 3; i++)
I915_WRITE(SWF3(i), dev_priv->regfile.saveSWF3[i]);
+ } else {
+ for (i = 0; i < 36; i++)
+ I915_WRITE(SWF_ILK(i), dev_priv->regfile.saveSWF_ILK[i]);
}
mutex_unlock(&dev->struct_mutex);
--
2.4.10
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