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drm/radeon/kms: add new radeon_info ioctl query for clock crystal freq

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Needed for timer queries in the 3D driver.

Signed-off-by: Alex Deucher <alexdeucher@gmail.com>
Signed-off-by: Dave Airlie <airlied@gmail.com>
This commit is contained in:
Alex Deucher 2011-01-24 17:14:26 -05:00 committed by Dave Airlie
parent b526ce2264
commit 58bbf018a7
3 changed files with 6 additions and 1 deletions
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2
drivers/gpu/drm/radeon/radeon_drv.c
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@ -48,7 +48,7 @@
* - 2.5.0 - add get accel 2 to work around ddx breakage for evergreen
* - 2.6.0 - add tiling config query (r6xx+), add initial HiZ support (r300->r500)
* 2.7.0 - fixups for r600 2D tiling support. (no external ABI change), add eg dyn gpr regs
* 2.8.0 - pageflip support, r500 US_FORMAT regs. r500 ARGB2101010 colorbuf, r300->r500 CMASK
* 2.8.0 - pageflip support, r500 US_FORMAT regs. r500 ARGB2101010 colorbuf, r300->r500 CMASK, clock crystal query
*/
#define KMS_DRIVER_MAJOR 2
#define KMS_DRIVER_MINOR 8

4
drivers/gpu/drm/radeon/radeon_kms.c
View File

@ -201,6 +201,10 @@ int radeon_info_ioctl(struct drm_device *dev, void *data, struct drm_file *filp)
}
radeon_set_filp_rights(dev, &rdev->cmask_filp, filp, &value);
break;
case RADEON_INFO_CLOCK_CRYSTAL_FREQ:
/* return clock value in KHz */
value = rdev->clock.spll.reference_freq * 10;
break;
default:
DRM_DEBUG_KMS("Invalid request %d\n", info->request);
return -EINVAL;

1
include/drm/radeon_drm.h
View File

@ -907,6 +907,7 @@ struct drm_radeon_cs {
#define RADEON_INFO_TILING_CONFIG 0x06
#define RADEON_INFO_WANT_HYPERZ 0x07
#define RADEON_INFO_WANT_CMASK 0x08 /* get access to CMASK on r300 */
#define RADEON_INFO_CLOCK_CRYSTAL_FREQ 0x09 /* clock crystal frequency */
struct drm_radeon_info {
uint32_t request;