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drm/panthor: Enable timestamp propagation

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Set the GLB_COUNTER_EN bit to enable coherent propagation of GPU
timestamp values to shader cores. This is a prerequisite for exposing
device-coherent timestamp queries.

Bump the version to 1.6 so userspace can detect support.

v2:
- GLB_COUNTER_EN is not a toggle bit move to panthor_fw_update_reqs

Signed-off-by: Ashley Smith <ashley.smith@collabora.com>
Reviewed-by: Steven Price <steven.price@arm.com>
Link: https://patch.msgid.link/20251127115019.2113040-1-ashley.smith@collabora.com
Signed-off-by: Boris Brezillon <boris.brezillon@collabora.com>
This commit is contained in:
Ashley Smith 2025-11-27 11:44:02 +00:00 committed by Boris Brezillon
parent 88e721ab97
commit d8f94cb02a
2 changed files with 4 additions and 2 deletions
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3
drivers/gpu/drm/panthor/panthor_drv.c
View File

@ -1604,6 +1604,7 @@ static void panthor_debugfs_init(struct drm_minor *minor)
* - 1.3 - adds DRM_PANTHOR_GROUP_STATE_INNOCENT flag
* - 1.4 - adds DRM_IOCTL_PANTHOR_BO_SET_LABEL ioctl
* - 1.5 - adds DRM_PANTHOR_SET_USER_MMIO_OFFSET ioctl
* - 1.6 - enables GLB_COUNTER_EN
*/
static const struct drm_driver panthor_drm_driver = {
.driver_features = DRIVER_RENDER | DRIVER_GEM | DRIVER_SYNCOBJ |
@ -1617,7 +1618,7 @@ static const struct drm_driver panthor_drm_driver = {
.name = "panthor",
.desc = "Panthor DRM driver",
.major = 1,
.minor = 5,
.minor = 6,
.gem_create_object = panthor_gem_create_object,
.gem_prime_import_sg_table = drm_gem_shmem_prime_import_sg_table,

3
drivers/gpu/drm/panthor/panthor_fw.c
View File

@ -1044,7 +1044,8 @@ static void panthor_fw_init_global_iface(struct panthor_device *ptdev)
if (panthor_fw_has_glb_state(ptdev))
glb_iface->input->ack_irq_mask |= GLB_STATE_MASK;
panthor_fw_update_reqs(glb_iface, req, GLB_IDLE_EN, GLB_IDLE_EN);
panthor_fw_update_reqs(glb_iface, req, GLB_IDLE_EN | GLB_COUNTER_EN,
GLB_IDLE_EN | GLB_COUNTER_EN);
panthor_fw_toggle_reqs(glb_iface, req, ack,
GLB_CFG_ALLOC_EN |
GLB_CFG_POWEROFF_TIMER |