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drm/vc4: Implement atomic_print_state for HVS channel state 

The HVS state configuration is useful when debugging what's going on in
the vc4 hardware pipeline. Add an implementation of .atomic_print_state.

Acked-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Maxime Ripard <maxime@cerno.tech>
Link: https://lore.kernel.org/r/20220328124304.2309418-5-maxime@cerno.tech
This commit is contained in:
Maxime Ripard 2022-03-28 14:43:04 +02:00
parent 220f125cd5
commit 66bfe59dd3
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1 changed files with 17 additions and 0 deletions
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17
drivers/gpu/drm/vc4/vc4_kms.c
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@ -701,9 +701,26 @@ static void vc4_hvs_channels_destroy_state(struct drm_private_obj *obj,
kfree(hvs_state);
}
static void vc4_hvs_channels_print_state(struct drm_printer *p,
const struct drm_private_state *state)
{
struct vc4_hvs_state *hvs_state = to_vc4_hvs_state(state);
unsigned int i;
drm_printf(p, "HVS State\n");
drm_printf(p, "\tCore Clock Rate: %lu\n", hvs_state->core_clock_rate);
for (i = 0; i < HVS_NUM_CHANNELS; i++) {
drm_printf(p, "\tChannel %d\n", i);
drm_printf(p, "\t\tin use=%d\n", hvs_state->fifo_state[i].in_use);
drm_printf(p, "\t\tload=%lu\n", hvs_state->fifo_state[i].fifo_load);
}
}
static const struct drm_private_state_funcs vc4_hvs_state_funcs = {
.atomic_duplicate_state = vc4_hvs_channels_duplicate_state,
.atomic_destroy_state = vc4_hvs_channels_destroy_state,
.atomic_print_state = vc4_hvs_channels_print_state,
};
static void vc4_hvs_channels_obj_fini(struct drm_device *dev, void *unused)