diff options
| author | Alex Deucher <alexander.deucher@amd.com> | 2016-03-02 11:47:29 -0500 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2016-03-09 13:03:19 -0500 |
| commit | e64c952efb8e0c15ae82cec8e455ab4910690ef1 (patch) | |
| tree | 02c5e48e7925e0cf8ff6e307279ef56d756a820f /drivers/gpu/drm/radeon/radeon_device.c | |
| parent | 92821c261d1f0ca250b7cff4e4bbcc58d8530f90 (diff) | |
| download | linux-e64c952efb8e0c15ae82cec8e455ab4910690ef1.tar.bz2 | |
drm/radeon: disable runtime pm on PX laptops without dGPU power control
Some PX laptops don't provide an ACPI method to control dGPU power. On
those systems, the driver is responsible for handling the dGPU power
state. Disable runtime PM on them until support for this is implemented.
Reviewed-by: Michel Dänzer <michel.daenzer@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org
Diffstat (limited to 'drivers/gpu/drm/radeon/radeon_device.c')
| -rw-r--r-- | drivers/gpu/drm/radeon/radeon_device.c | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/drivers/gpu/drm/radeon/radeon_device.c b/drivers/gpu/drm/radeon/radeon_device.c index 902b59cebac5..4de23ae3a64b 100644 --- a/drivers/gpu/drm/radeon/radeon_device.c +++ b/drivers/gpu/drm/radeon/radeon_device.c @@ -103,6 +103,12 @@ static const char radeon_family_name[][16] = { "LAST", }; +#if defined(CONFIG_VGA_SWITCHEROO) +bool radeon_has_atpx_dgpu_power_cntl(void); +#else +static inline bool radeon_has_atpx_dgpu_power_cntl(void) { return false; } +#endif + #define RADEON_PX_QUIRK_DISABLE_PX (1 << 0) #define RADEON_PX_QUIRK_LONG_WAKEUP (1 << 1) @@ -1433,7 +1439,7 @@ int radeon_device_init(struct radeon_device *rdev, * ignore it */ vga_client_register(rdev->pdev, rdev, NULL, radeon_vga_set_decode); - if (rdev->flags & RADEON_IS_PX) + if ((rdev->flags & RADEON_IS_PX) && radeon_has_atpx_dgpu_power_cntl()) runtime = true; vga_switcheroo_register_client(rdev->pdev, &radeon_switcheroo_ops, runtime); if (runtime) |