From: Ville Syrjälä <ville.syrj...@linux.intel.com>
Extract the code to determine the DG2 pipe power well count
into a small helper. I'll have other uses for this later.
TODO: need to move this power well stuff out from the cdclk code...
v2: Don't lose the early return from intel_cdclk_pcode_pre_notify()
(kernel test robot)
Signed-off-by: Ville Syrjälä <ville.syrj...@linux.intel.com>
---
drivers/gpu/drm/i915/display/intel_cdclk.c | 33 +++++++++++++---------
1 file changed, 19 insertions(+), 14 deletions(-)
diff --git a/drivers/gpu/drm/i915/display/intel_cdclk.c
b/drivers/gpu/drm/i915/display/intel_cdclk.c
index 05d9f488895e..f190cfb85a34 100644
--- a/drivers/gpu/drm/i915/display/intel_cdclk.c
+++ b/drivers/gpu/drm/i915/display/intel_cdclk.c
@@ -2591,6 +2591,12 @@ static void intel_set_cdclk(struct intel_display
*display,
}
}
+static bool dg2_power_well_count(struct intel_display *display,
+ const struct intel_cdclk_state *cdclk_state)
+{
+ return display->platform.dg2 ? hweight8(cdclk_state->active_pipes) : 0;
+}
+
static void intel_cdclk_pcode_pre_notify(struct intel_atomic_state *state)
{
struct intel_display *display = to_intel_display(state);
@@ -2603,16 +2609,16 @@ static void intel_cdclk_pcode_pre_notify(struct
intel_atomic_state *state)
if (!intel_cdclk_changed(&old_cdclk_state->actual,
&new_cdclk_state->actual) &&
- new_cdclk_state->active_pipes ==
- old_cdclk_state->active_pipes)
+ dg2_power_well_count(display, old_cdclk_state) ==
+ dg2_power_well_count(display, old_cdclk_state))
return;
/* According to "Sequence Before Frequency Change", voltage level set
to 0x3 */
voltage_level = DISPLAY_TO_PCODE_VOLTAGE_MAX;
change_cdclk = new_cdclk_state->actual.cdclk !=
old_cdclk_state->actual.cdclk;
- update_pipe_count = hweight8(new_cdclk_state->active_pipes) >
- hweight8(old_cdclk_state->active_pipes);
+ update_pipe_count = dg2_power_well_count(display, new_cdclk_state) >
+ dg2_power_well_count(display, old_cdclk_state);
/*
* According to "Sequence Before Frequency Change",
@@ -2630,7 +2636,7 @@ static void intel_cdclk_pcode_pre_notify(struct
intel_atomic_state *state)
* no action if it is decreasing, before the change
*/
if (update_pipe_count)
- num_active_pipes = hweight8(new_cdclk_state->active_pipes);
+ num_active_pipes = dg2_power_well_count(display,
new_cdclk_state);
intel_pcode_notify(display, voltage_level, num_active_pipes, cdclk,
change_cdclk, update_pipe_count);
@@ -2650,8 +2656,8 @@ static void intel_cdclk_pcode_post_notify(struct
intel_atomic_state *state)
voltage_level = new_cdclk_state->actual.voltage_level;
update_cdclk = new_cdclk_state->actual.cdclk !=
old_cdclk_state->actual.cdclk;
- update_pipe_count = hweight8(new_cdclk_state->active_pipes) <
- hweight8(old_cdclk_state->active_pipes);
+ update_pipe_count = dg2_power_well_count(display, new_cdclk_state) <
+ dg2_power_well_count(display, old_cdclk_state);
/*
* According to "Sequence After Frequency Change",
@@ -2667,7 +2673,7 @@ static void intel_cdclk_pcode_post_notify(struct
intel_atomic_state *state)
* no action if it is increasing, after the change
*/
if (update_pipe_count)
- num_active_pipes = hweight8(new_cdclk_state->active_pipes);
+ num_active_pipes = dg2_power_well_count(display,
new_cdclk_state);
intel_pcode_notify(display, voltage_level, num_active_pipes, cdclk,
update_cdclk, update_pipe_count);
@@ -3248,15 +3254,14 @@ static bool intel_cdclk_need_serialize(struct
intel_display *display,
const struct intel_cdclk_state
*old_cdclk_state,
const struct intel_cdclk_state
*new_cdclk_state)
{
- bool power_well_cnt_changed = hweight8(old_cdclk_state->active_pipes) !=
- hweight8(new_cdclk_state->active_pipes);
- bool cdclk_changed = intel_cdclk_changed(&old_cdclk_state->actual,
- &new_cdclk_state->actual);
/*
- * We need to poke hw for gen >= 12, because we notify PCode if
+ * We need to poke hw for DG2, because we notify PCode if
* pipe power well count changes.
*/
- return cdclk_changed || (display->platform.dg2 &&
power_well_cnt_changed);
+ return intel_cdclk_changed(&old_cdclk_state->actual,
+ &new_cdclk_state->actual) ||
+ dg2_power_well_count(display, old_cdclk_state) !=
+ dg2_power_well_count(display, new_cdclk_state);
}
int intel_modeset_calc_cdclk(struct intel_atomic_state *state)
--
2.49.1
