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drm/i915/display: Split out DG2 MPLLB enable helper

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Refactor the DG2 MPLLB enable path by splitting out a helper that
programs the PHY directly from an intel_mpllb_state.

This is preparatory work for moving DG2 MPLLB handling under the DPLL
framework, where callbacks operate on dpll_hw_state rather than the
full crtc_state.

Assisted-by: Copilot:claude-sonnet-4-6
Signed-off-by: Mika Kahola <mika.kahola@intel.com>
Reviewed-by: Michał Grzelak <michal.grzelak@intel.com>
Link: https://patch.msgid.link/20260630115336.1059976-2-mika.kahola@intel.com
This commit is contained in:
Mika Kahola 2026-06-30 11:53:33 +00:00
parent 533b8c78f1
commit 75eef2123c
2 changed files with 10 additions and 3 deletions
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11
drivers/gpu/drm/i915/display/intel_snps_phy.c
View File

@ -1816,11 +1816,10 @@ int intel_mpllb_calc_state(struct intel_crtc_state *crtc_state,
return -EINVAL;
}
void intel_mpllb_enable(struct intel_encoder *encoder,
const struct intel_crtc_state *crtc_state)
void intel_mpllb_enable_phy(struct intel_encoder *encoder,
const struct intel_mpllb_state *pll_state)
{
struct intel_display *display = to_intel_display(encoder);
const struct intel_mpllb_state *pll_state = &crtc_state->dpll_hw_state.mpllb;
enum phy phy = intel_encoder_to_phy(encoder);
intel_reg_t enable_reg = (phy <= PHY_D ?
DG2_PLL_ENABLE(phy) : MG_PLL_ENABLE(0));
@ -1875,6 +1874,12 @@ void intel_mpllb_enable(struct intel_encoder *encoder,
*/
}
void intel_mpllb_enable(struct intel_encoder *encoder,
const struct intel_crtc_state *crtc_state)
{
intel_mpllb_enable_phy(encoder, &crtc_state->dpll_hw_state.mpllb);
}
void intel_mpllb_disable(struct intel_encoder *encoder)
{
struct intel_display *display = to_intel_display(encoder);

2
drivers/gpu/drm/i915/display/intel_snps_phy.h
View File

@ -22,6 +22,8 @@ void intel_snps_phy_update_psr_power_state(struct intel_encoder *encoder,
int intel_mpllb_calc_state(struct intel_crtc_state *crtc_state,
struct intel_encoder *encoder);
void intel_mpllb_enable_phy(struct intel_encoder *encoder,
const struct intel_mpllb_state *pll_state);
void intel_mpllb_enable(struct intel_encoder *encoder,
const struct intel_crtc_state *crtc_state);
void intel_mpllb_disable(struct intel_encoder *encoder);