diff options
| author | Dave Airlie <airlied@redhat.com> | 2012-09-17 14:40:31 +1000 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2013-11-01 12:43:14 -0400 |
| commit | 10ebc0bc09344ab6310309169efc73dfe6c23d72 (patch) | |
| tree | 9d93730a567190aa7b57d91999565273bc002dc0 /drivers/gpu/drm/radeon/radeon_kms.c | |
| parent | 7473e830c400b2ebf54937a4f075279f7713a2b7 (diff) | |
drm/radeon: add runtime PM support (v2)
This hooks radeon up to the runtime PM system to enable
dynamic power management for secondary GPUs in switchable
and powerxpress laptops.
v2: agd5f: clean up, add module parameter
Signed-off-by: Dave Airlie <airlied@redhat.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'drivers/gpu/drm/radeon/radeon_kms.c')
| -rw-r--r-- | drivers/gpu/drm/radeon/radeon_kms.c | 26 |
1 files changed, 25 insertions, 1 deletions
diff --git a/drivers/gpu/drm/radeon/radeon_kms.c b/drivers/gpu/drm/radeon/radeon_kms.c index d6b36766e8c..bb8710531a1 100644 --- a/drivers/gpu/drm/radeon/radeon_kms.c +++ b/drivers/gpu/drm/radeon/radeon_kms.c @@ -32,7 +32,7 @@ #include <linux/vga_switcheroo.h> #include <linux/slab.h> - +#include <linux/pm_runtime.h> /** * radeon_driver_unload_kms - Main unload function for KMS. * @@ -50,9 +50,14 @@ int radeon_driver_unload_kms(struct drm_device *dev) if (rdev == NULL) return 0; + if (rdev->rmmio == NULL) goto done_free; + + pm_runtime_get_sync(dev->dev); + radeon_acpi_fini(rdev); + radeon_modeset_fini(rdev); radeon_device_fini(rdev); @@ -125,9 +130,20 @@ int radeon_driver_load_kms(struct drm_device *dev, unsigned long flags) "Error during ACPI methods call\n"); } + if (radeon_runtime_pm != 0) { + pm_runtime_use_autosuspend(dev->dev); + pm_runtime_set_autosuspend_delay(dev->dev, 5000); + pm_runtime_set_active(dev->dev); + pm_runtime_allow(dev->dev); + pm_runtime_mark_last_busy(dev->dev); + pm_runtime_put_autosuspend(dev->dev); + } + out: if (r) radeon_driver_unload_kms(dev); + + return r; } @@ -475,9 +491,14 @@ void radeon_driver_lastclose_kms(struct drm_device *dev) int radeon_driver_open_kms(struct drm_device *dev, struct drm_file *file_priv) { struct radeon_device *rdev = dev->dev_private; + int r; file_priv->driver_priv = NULL; + r = pm_runtime_get_sync(dev->dev); + if (r < 0) + return r; + /* new gpu have virtual address space support */ if (rdev->family >= CHIP_CAYMAN) { struct radeon_fpriv *fpriv; @@ -506,6 +527,9 @@ int radeon_driver_open_kms(struct drm_device *dev, struct drm_file *file_priv) file_priv->driver_priv = fpriv; } + + pm_runtime_mark_last_busy(dev->dev); + pm_runtime_put_autosuspend(dev->dev); return 0; } |