Am 02.10.2014 um 15:06 schrieb Alex Deucher:
On Thu, Oct 2, 2014 at 8:26 AM, Christian König <deathsimple@xxxxxxxxxxx> wrote:
Might be a good idea to make that a bit more generic, e.g. add a
get_current_clk callback and and a type (sclk, mclk, vclk, dclk, etc..)
enum. But I can live with this approach as well.
Yeah, I thought about that, but I'm not sure if there is a good way to
query that for certain clocks when dynamic clocking is enabled. E.g.,
UVD on newer asics.
That's why I always favored using the PLL test registers. It can
actually measure the clocks quite precisely if the reference clock
(usually the PCI clock) is stable enough. And as far as I know can
access any clock signal in the system, even the memory clock is
measurable for each memory interface separately.
Christian.
Alex
Christian.
Am 01.10.2014 um 17:38 schrieb Alex Deucher:
Needed to to expose the current clocks via the INFO ioctl.
Signed-off-by: Alex Deucher <alexander.deucher@xxxxxxx>
---
drivers/gpu/drm/radeon/radeon.h | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/drivers/gpu/drm/radeon/radeon.h
b/drivers/gpu/drm/radeon/radeon.h
index 510fe96..9e3dc82 100644
--- a/drivers/gpu/drm/radeon/radeon.h
+++ b/drivers/gpu/drm/radeon/radeon.h
@@ -1935,6 +1935,8 @@ struct radeon_asic {
bool (*vblank_too_short)(struct radeon_device *rdev);
void (*powergate_uvd)(struct radeon_device *rdev, bool
gate);
void (*enable_bapm)(struct radeon_device *rdev, bool
enable);
+ u32 (*get_current_sclk)(struct radeon_device *rdev);
+ u32 (*get_current_mclk)(struct radeon_device *rdev);
} dpm;
/* pageflipping */
struct {
@@ -2893,6 +2895,8 @@ static inline void radeon_ring_write(struct
radeon_ring *ring, uint32_t v)
#define radeon_dpm_vblank_too_short(rdev)
rdev->asic->dpm.vblank_too_short((rdev))
#define radeon_dpm_powergate_uvd(rdev, g)
rdev->asic->dpm.powergate_uvd((rdev), (g))
#define radeon_dpm_enable_bapm(rdev, e)
rdev->asic->dpm.enable_bapm((rdev), (e))
+#define radeon_dpm_get_current_sclk(rdev)
rdev->asic->dpm.get_current_sclk((rdev))
+#define radeon_dpm_get_current_mclk(rdev)
rdev->asic->dpm.get_current_mclk((rdev))
/* Common functions */
/* AGP */
_______________________________________________
dri-devel mailing list
dri-devel@xxxxxxxxxxxxxxxxxxxxx
http://lists.freedesktop.org/mailman/listinfo/dri-devel
