diff options
Diffstat (limited to 'drivers/gpu/drm/i915/display/hsw_ips.c')
| -rw-r--r-- | drivers/gpu/drm/i915/display/hsw_ips.c | 20 |
1 files changed, 18 insertions, 2 deletions
diff --git a/drivers/gpu/drm/i915/display/hsw_ips.c b/drivers/gpu/drm/i915/display/hsw_ips.c index 34c5d28fc866..d02c328bf902 100644 --- a/drivers/gpu/drm/i915/display/hsw_ips.c +++ b/drivers/gpu/drm/i915/display/hsw_ips.c @@ -185,10 +185,12 @@ void hsw_ips_post_update(struct intel_atomic_state *state, /* IPS only exists on ULT machines and is tied to pipe A. */ bool hsw_crtc_supports_ips(struct intel_crtc *crtc) { - return HAS_IPS(to_i915(crtc->base.dev)) && crtc->pipe == PIPE_A; + struct intel_display *display = to_intel_display(crtc); + + return HAS_IPS(display) && crtc->pipe == PIPE_A; } -bool hsw_crtc_state_ips_capable(const struct intel_crtc_state *crtc_state) +static bool hsw_crtc_state_ips_capable(const struct intel_crtc_state *crtc_state) { struct intel_display *display = to_intel_display(crtc_state); struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc); @@ -218,6 +220,20 @@ bool hsw_crtc_state_ips_capable(const struct intel_crtc_state *crtc_state) return true; } +int hsw_ips_min_cdclk(const struct intel_crtc_state *crtc_state) +{ + struct drm_i915_private *i915 = to_i915(crtc_state->uapi.crtc->dev); + + if (!IS_BROADWELL(i915)) + return 0; + + if (!hsw_crtc_state_ips_capable(crtc_state)) + return 0; + + /* pixel rate mustn't exceed 95% of cdclk with IPS on BDW */ + return DIV_ROUND_UP(crtc_state->pixel_rate * 100, 95); +} + int hsw_ips_compute_config(struct intel_atomic_state *state, struct intel_crtc *crtc) { |