diff options
Diffstat (limited to 'drivers/gpu/drm/i915/display/intel_cx0_phy.c')
| -rw-r--r-- | drivers/gpu/drm/i915/display/intel_cx0_phy.c | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/drivers/gpu/drm/i915/display/intel_cx0_phy.c b/drivers/gpu/drm/i915/display/intel_cx0_phy.c index 7f7b63ae7651..d94127e7448b 100644 --- a/drivers/gpu/drm/i915/display/intel_cx0_phy.c +++ b/drivers/gpu/drm/i915/display/intel_cx0_phy.c @@ -2893,6 +2893,25 @@ void intel_mtl_pll_disable(struct intel_encoder *encoder) intel_cx0pll_disable(encoder); } +enum icl_port_dpll_id +intel_mtl_port_pll_type(struct intel_encoder *encoder, + const struct intel_crtc_state *crtc_state) +{ + struct drm_i915_private *i915 = to_i915(encoder->base.dev); + /* + * TODO: Determine the PLL type from the SW state, once MTL PLL + * handling is done via the standard shared DPLL framework. + */ + u32 val = intel_de_read(i915, XELPDP_PORT_CLOCK_CTL(encoder->port)); + u32 clock = REG_FIELD_GET(XELPDP_DDI_CLOCK_SELECT_MASK, val); + + if (clock == XELPDP_DDI_CLOCK_SELECT_MAXPCLK || + clock == XELPDP_DDI_CLOCK_SELECT_DIV18CLK) + return ICL_PORT_DPLL_MG_PHY; + else + return ICL_PORT_DPLL_DEFAULT; +} + void intel_c10pll_state_verify(struct intel_atomic_state *state, struct intel_crtc_state *new_crtc_state) { |