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-rw-r--r--drivers/gpu/drm/i915/i915_dma.c6
-rw-r--r--drivers/gpu/drm/i915/i915_drv.c36
-rw-r--r--drivers/gpu/drm/i915/i915_drv.h7
-rw-r--r--drivers/gpu/drm/i915/intel_drv.h4
-rw-r--r--drivers/gpu/drm/i915/intel_pm.c55
-rw-r--r--drivers/gpu/drm/i915/intel_uncore.c9
6 files changed, 117 insertions, 0 deletions
diff --git a/drivers/gpu/drm/i915/i915_dma.c b/drivers/gpu/drm/i915/i915_dma.c
index a5d010c86368..b49571df555f 100644
--- a/drivers/gpu/drm/i915/i915_dma.c
+++ b/drivers/gpu/drm/i915/i915_dma.c
@@ -42,6 +42,8 @@
#include <linux/vga_switcheroo.h>
#include <linux/slab.h>
#include <acpi/video.h>
+#include <linux/pm.h>
+#include <linux/pm_runtime.h>
#define LP_RING(d) (&((struct drm_i915_private *)(d))->ring[RCS])
@@ -1663,6 +1665,8 @@ int i915_driver_load(struct drm_device *dev, unsigned long flags)
if (IS_GEN5(dev))
intel_gpu_ips_init(dev_priv);
+ intel_init_runtime_pm(dev_priv);
+
return 0;
out_power_well:
@@ -1708,6 +1712,8 @@ int i915_driver_unload(struct drm_device *dev)
return ret;
}
+ intel_fini_runtime_pm(dev_priv);
+
intel_gpu_ips_teardown();
/* The i915.ko module is still not prepared to be loaded when
diff --git a/drivers/gpu/drm/i915/i915_drv.c b/drivers/gpu/drm/i915/i915_drv.c
index 13076db65eb9..7d2136170293 100644
--- a/drivers/gpu/drm/i915/i915_drv.c
+++ b/drivers/gpu/drm/i915/i915_drv.c
@@ -502,6 +502,8 @@ static int i915_drm_freeze(struct drm_device *dev)
struct drm_i915_private *dev_priv = dev->dev_private;
struct drm_crtc *crtc;
+ intel_runtime_pm_get(dev_priv);
+
/* ignore lid events during suspend */
mutex_lock(&dev_priv->modeset_restore_lock);
dev_priv->modeset_restore = MODESET_SUSPENDED;
@@ -686,6 +688,8 @@ static int __i915_drm_thaw(struct drm_device *dev, bool restore_gtt_mappings)
mutex_lock(&dev_priv->modeset_restore_lock);
dev_priv->modeset_restore = MODESET_DONE;
mutex_unlock(&dev_priv->modeset_restore_lock);
+
+ intel_runtime_pm_put(dev_priv);
return error;
}
@@ -900,6 +904,36 @@ static int i915_pm_poweroff(struct device *dev)
return i915_drm_freeze(drm_dev);
}
+static int i915_runtime_suspend(struct device *device)
+{
+ struct pci_dev *pdev = to_pci_dev(device);
+ struct drm_device *dev = pci_get_drvdata(pdev);
+ struct drm_i915_private *dev_priv = dev->dev_private;
+
+ WARN_ON(!HAS_RUNTIME_PM(dev));
+
+ DRM_DEBUG_KMS("Suspending device\n");
+
+ dev_priv->pm.suspended = true;
+
+ return 0;
+}
+
+static int i915_runtime_resume(struct device *device)
+{
+ struct pci_dev *pdev = to_pci_dev(device);
+ struct drm_device *dev = pci_get_drvdata(pdev);
+ struct drm_i915_private *dev_priv = dev->dev_private;
+
+ WARN_ON(!HAS_RUNTIME_PM(dev));
+
+ DRM_DEBUG_KMS("Resuming device\n");
+
+ dev_priv->pm.suspended = false;
+
+ return 0;
+}
+
static const struct dev_pm_ops i915_pm_ops = {
.suspend = i915_pm_suspend,
.resume = i915_pm_resume,
@@ -907,6 +941,8 @@ static const struct dev_pm_ops i915_pm_ops = {
.thaw = i915_pm_thaw,
.poweroff = i915_pm_poweroff,
.restore = i915_pm_resume,
+ .runtime_suspend = i915_runtime_suspend,
+ .runtime_resume = i915_runtime_resume,
};
static const struct vm_operations_struct i915_gem_vm_ops = {
diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h
index 780f815b6c9f..98fd1c043777 100644
--- a/drivers/gpu/drm/i915/i915_drv.h
+++ b/drivers/gpu/drm/i915/i915_drv.h
@@ -1289,6 +1289,10 @@ struct i915_package_c8 {
} regsave;
};
+struct i915_runtime_pm {
+ bool suspended;
+};
+
enum intel_pipe_crc_source {
INTEL_PIPE_CRC_SOURCE_NONE,
INTEL_PIPE_CRC_SOURCE_PLANE1,
@@ -1519,6 +1523,8 @@ typedef struct drm_i915_private {
struct i915_package_c8 pc8;
+ struct i915_runtime_pm pm;
+
/* Old dri1 support infrastructure, beware the dragons ya fools entering
* here! */
struct i915_dri1_state dri1;
@@ -1843,6 +1849,7 @@ struct drm_i915_file_private {
#define HAS_FPGA_DBG_UNCLAIMED(dev) (INTEL_INFO(dev)->has_fpga_dbg)
#define HAS_PSR(dev) (IS_HASWELL(dev) || IS_BROADWELL(dev))
#define HAS_PC8(dev) (IS_HASWELL(dev)) /* XXX HSW:ULX */
+#define HAS_RUNTIME_PM(dev) false
#define INTEL_PCH_DEVICE_ID_MASK 0xff00
#define INTEL_PCH_IBX_DEVICE_ID_TYPE 0x3b00
diff --git a/drivers/gpu/drm/i915/intel_drv.h b/drivers/gpu/drm/i915/intel_drv.h
index 79585cddc2cd..4a4effba134b 100644
--- a/drivers/gpu/drm/i915/intel_drv.h
+++ b/drivers/gpu/drm/i915/intel_drv.h
@@ -862,6 +862,10 @@ void gen6_rps_idle(struct drm_i915_private *dev_priv);
void gen6_rps_boost(struct drm_i915_private *dev_priv);
void intel_aux_display_runtime_get(struct drm_i915_private *dev_priv);
void intel_aux_display_runtime_put(struct drm_i915_private *dev_priv);
+void intel_runtime_pm_get(struct drm_i915_private *dev_priv);
+void intel_runtime_pm_put(struct drm_i915_private *dev_priv);
+void intel_init_runtime_pm(struct drm_i915_private *dev_priv);
+void intel_fini_runtime_pm(struct drm_i915_private *dev_priv);
void ilk_wm_get_hw_state(struct drm_device *dev);
diff --git a/drivers/gpu/drm/i915/intel_pm.c b/drivers/gpu/drm/i915/intel_pm.c
index cd3f511847ec..2590a5c90725 100644
--- a/drivers/gpu/drm/i915/intel_pm.c
+++ b/drivers/gpu/drm/i915/intel_pm.c
@@ -31,6 +31,7 @@
#include "../../../platform/x86/intel_ips.h"
#include <linux/module.h>
#include <drm/i915_powerwell.h>
+#include <linux/pm_runtime.h>
/**
* RC6 is a special power stage which allows the GPU to enter an very
@@ -5961,6 +5962,60 @@ void intel_aux_display_runtime_put(struct drm_i915_private *dev_priv)
hsw_enable_package_c8(dev_priv);
}
+void intel_runtime_pm_get(struct drm_i915_private *dev_priv)
+{
+ struct drm_device *dev = dev_priv->dev;
+ struct device *device = &dev->pdev->dev;
+
+ if (!HAS_RUNTIME_PM(dev))
+ return;
+
+ pm_runtime_get_sync(device);
+ WARN(dev_priv->pm.suspended, "Device still suspended.\n");
+}
+
+void intel_runtime_pm_put(struct drm_i915_private *dev_priv)
+{
+ struct drm_device *dev = dev_priv->dev;
+ struct device *device = &dev->pdev->dev;
+
+ if (!HAS_RUNTIME_PM(dev))
+ return;
+
+ pm_runtime_mark_last_busy(device);
+ pm_runtime_put_autosuspend(device);
+}
+
+void intel_init_runtime_pm(struct drm_i915_private *dev_priv)
+{
+ struct drm_device *dev = dev_priv->dev;
+ struct device *device = &dev->pdev->dev;
+
+ dev_priv->pm.suspended = false;
+
+ if (!HAS_RUNTIME_PM(dev))
+ return;
+
+ pm_runtime_set_active(device);
+
+ pm_runtime_set_autosuspend_delay(device, 10000); /* 10s */
+ pm_runtime_mark_last_busy(device);
+ pm_runtime_use_autosuspend(device);
+}
+
+void intel_fini_runtime_pm(struct drm_i915_private *dev_priv)
+{
+ struct drm_device *dev = dev_priv->dev;
+ struct device *device = &dev->pdev->dev;
+
+ if (!HAS_RUNTIME_PM(dev))
+ return;
+
+ /* Make sure we're not suspended first. */
+ pm_runtime_get_sync(device);
+ pm_runtime_disable(device);
+}
+
/* Set up chip specific power management-related functions */
void intel_init_pm(struct drm_device *dev)
{
diff --git a/drivers/gpu/drm/i915/intel_uncore.c b/drivers/gpu/drm/i915/intel_uncore.c
index e63658e0cfd3..0c4c302aa38c 100644
--- a/drivers/gpu/drm/i915/intel_uncore.c
+++ b/drivers/gpu/drm/i915/intel_uncore.c
@@ -437,6 +437,13 @@ hsw_unclaimed_reg_check(struct drm_i915_private *dev_priv, u32 reg)
}
}
+static void
+assert_device_not_suspended(struct drm_i915_private *dev_priv)
+{
+ WARN(HAS_RUNTIME_PM(dev_priv->dev) && dev_priv->pm.suspended,
+ "Device suspended\n");
+}
+
#define REG_READ_HEADER(x) \
unsigned long irqflags; \
u##x val = 0; \
@@ -568,6 +575,7 @@ gen6_write##x(struct drm_i915_private *dev_priv, off_t reg, u##x val, bool trace
if (NEEDS_FORCE_WAKE((dev_priv), (reg))) { \
__fifo_ret = __gen6_gt_wait_for_fifo(dev_priv); \
} \
+ assert_device_not_suspended(dev_priv); \
__raw_i915_write##x(dev_priv, reg, val); \
if (unlikely(__fifo_ret)) { \
gen6_gt_check_fifodbg(dev_priv); \
@@ -583,6 +591,7 @@ hsw_write##x(struct drm_i915_private *dev_priv, off_t reg, u##x val, bool trace)
if (NEEDS_FORCE_WAKE((dev_priv), (reg))) { \
__fifo_ret = __gen6_gt_wait_for_fifo(dev_priv); \
} \
+ assert_device_not_suspended(dev_priv); \
hsw_unclaimed_reg_clear(dev_priv, reg); \
__raw_i915_write##x(dev_priv, reg, val); \
if (unlikely(__fifo_ret)) { \
generated by cgit v1.2.3 (git 2.0.4) at 2025-01-11 12:48:20 +0000