diff options
Diffstat (limited to 'drivers/gpu/drm/i915/display/intel_dpll.c')
| -rw-r--r-- | drivers/gpu/drm/i915/display/intel_dpll.c | 47 |
1 files changed, 46 insertions, 1 deletions
diff --git a/drivers/gpu/drm/i915/display/intel_dpll.c b/drivers/gpu/drm/i915/display/intel_dpll.c index bc59efe18e89..6eef0b8a91eb 100644 --- a/drivers/gpu/drm/i915/display/intel_dpll.c +++ b/drivers/gpu/drm/i915/display/intel_dpll.c @@ -20,6 +20,8 @@ struct intel_dpll_funcs { int (*crtc_compute_clock)(struct intel_atomic_state *state, struct intel_crtc *crtc); + int (*crtc_get_shared_dpll)(struct intel_atomic_state *state, + struct intel_crtc *crtc); }; struct intel_limit { @@ -931,6 +933,12 @@ static void i8xx_compute_dpll(struct intel_crtc_state *crtc_state, static int hsw_crtc_compute_clock(struct intel_atomic_state *state, struct intel_crtc *crtc) { + return 0; +} + +static int hsw_crtc_get_shared_dpll(struct intel_atomic_state *state, + struct intel_crtc *crtc) +{ struct drm_i915_private *dev_priv = to_i915(state->base.dev); struct intel_crtc_state *crtc_state = intel_atomic_get_new_crtc_state(state, crtc); @@ -1087,7 +1095,6 @@ static int ilk_crtc_compute_clock(struct intel_atomic_state *state, intel_atomic_get_new_crtc_state(state, crtc); const struct intel_limit *limit; int refclk = 120000; - int ret; /* CPU eDP is the only output that doesn't need a PCH PLL of its own. */ if (!crtc_state->has_pch_encoder) @@ -1127,6 +1134,21 @@ static int ilk_crtc_compute_clock(struct intel_atomic_state *state, ilk_compute_dpll(crtc_state, &crtc_state->dpll, &crtc_state->dpll); + return 0; +} + +static int ilk_crtc_get_shared_dpll(struct intel_atomic_state *state, + struct intel_crtc *crtc) +{ + struct drm_i915_private *dev_priv = to_i915(state->base.dev); + struct intel_crtc_state *crtc_state = + intel_atomic_get_new_crtc_state(state, crtc); + int ret; + + /* CPU eDP is the only output that doesn't need a PCH PLL of its own. */ + if (!crtc_state->has_pch_encoder) + return 0; + ret = intel_reserve_shared_dplls(state, crtc, NULL); if (ret) { drm_dbg_kms(&dev_priv->drm, @@ -1376,10 +1398,12 @@ static const struct intel_dpll_funcs dg2_dpll_funcs = { static const struct intel_dpll_funcs hsw_dpll_funcs = { .crtc_compute_clock = hsw_crtc_compute_clock, + .crtc_get_shared_dpll = hsw_crtc_get_shared_dpll, }; static const struct intel_dpll_funcs ilk_dpll_funcs = { .crtc_compute_clock = ilk_crtc_compute_clock, + .crtc_get_shared_dpll = ilk_crtc_get_shared_dpll, }; static const struct intel_dpll_funcs chv_dpll_funcs = { @@ -1427,6 +1451,27 @@ int intel_dpll_crtc_compute_clock(struct intel_atomic_state *state, return i915->dpll_funcs->crtc_compute_clock(state, crtc); } +int intel_dpll_crtc_get_shared_dpll(struct intel_atomic_state *state, + struct intel_crtc *crtc) +{ + struct drm_i915_private *i915 = to_i915(state->base.dev); + struct intel_crtc_state *crtc_state = + intel_atomic_get_new_crtc_state(state, crtc); + + drm_WARN_ON(&i915->drm, !intel_crtc_needs_modeset(crtc_state)); + + if (drm_WARN_ON(&i915->drm, crtc_state->shared_dpll)) + return 0; + + if (!crtc_state->hw.enable) + return 0; + + if (!i915->dpll_funcs->crtc_get_shared_dpll) + return 0; + + return i915->dpll_funcs->crtc_get_shared_dpll(state, crtc); +} + void intel_dpll_init_clock_hook(struct drm_i915_private *dev_priv) { |