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drm/i915/display: allow to skip certain power wells

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This allows us to skip power wells on a platform allowing it to re-use
the table from another one instead of having to create a new table from
scratch that is basically a copy with a few removals.

Cc: Imre Deak <imre.deak@intel.com>
Suggested-by: Matt Roper <matthew.d.roper@intel.com>
Signed-off-by: Aditya Swarup <aditya.swarup@intel.com>
[ Adapt ignore logic to be based on pw id rather than adding a new
  field, as suggested by Imre ]
Signed-off-by: Lucas De Marchi <lucas.demarchi@intel.com>
Reviewed-by: Matt Roper <matthew.d.roper@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20201014191937.1266226-1-lucas.demarchi@intel.com
This commit is contained in:
Aditya Swarup 2020-10-14 12:19:27 -07:00 committed by Lucas De Marchi
parent 24ea098b7c
commit 9ccd24e9b0
1 changed files with 18 additions and 6 deletions
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24
drivers/gpu/drm/i915/display/intel_display_power.c
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@ -4554,13 +4554,18 @@ static u32 get_allowed_dc_mask(const struct drm_i915_private *dev_priv,
static int
__set_power_wells(struct i915_power_domains *power_domains,
const struct i915_power_well_desc *power_well_descs,
int power_well_count)
int power_well_descs_sz, u64 skip_mask)
{
struct drm_i915_private *i915 = container_of(power_domains,
struct drm_i915_private,
power_domains);
u64 power_well_ids = 0;
int i;
int power_well_count = 0;
int i, plt_idx = 0;
for (i = 0; i < power_well_descs_sz; i++)
if (!(BIT_ULL(power_well_descs[i].id) & skip_mask))
power_well_count++;
power_domains->power_well_count = power_well_count;
power_domains->power_wells =
@ -4570,10 +4575,14 @@ __set_power_wells(struct i915_power_domains *power_domains,
if (!power_domains->power_wells)
return -ENOMEM;
for (i = 0; i < power_well_count; i++) {
for (i = 0; i < power_well_descs_sz; i++) {
enum i915_power_well_id id = power_well_descs[i].id;
power_domains->power_wells[i].desc = &power_well_descs[i];
if (BIT_ULL(id) & skip_mask)
continue;
power_domains->power_wells[plt_idx++].desc =
&power_well_descs[i];
if (id == DISP_PW_ID_NONE)
continue;
@ -4586,9 +4595,12 @@ __set_power_wells(struct i915_power_domains *power_domains,
return 0;
}
#define set_power_wells(power_domains, __power_well_descs) \
#define set_power_wells_mask(power_domains, __power_well_descs, skip_mask) \
__set_power_wells(power_domains, __power_well_descs, \
ARRAY_SIZE(__power_well_descs))
ARRAY_SIZE(__power_well_descs), skip_mask)
#define set_power_wells(power_domains, __power_well_descs) \
set_power_wells_mask(power_domains, __power_well_descs, 0)
/**
* intel_power_domains_init - initializes the power domain structures