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drm/i915: Introduce ilk_pch_disable() and ilk_pch_post_disable()

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Hoover the remaining open coded PCH modeset sequence bits
out from ilk_crtc_disable(). Somewhat annoyingly the
enable vs. disable is a bit asymmetric so we need two
functions for the disable case.

Cc: Dave Airlie <airlied@redhat.com>
Cc: Jani Nikula <jani.nikula@intel.com>
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20211015071625.593-8-ville.syrjala@linux.intel.com
Reviewed-by: Dave Airlie <airlied@redhat.com>
This commit is contained in:
Ville Syrjälä
2021-10-15 10:16:23 +03:00
parent 9e68fa88b8
commit 976c68f46d
3 changed files with 43 additions and 26 deletions
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27
drivers/gpu/drm/i915/display/intel_display.c
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@@ -2287,33 +2287,12 @@ static void ilk_crtc_disable(struct intel_atomic_state *state,
ilk_pfit_disable(old_crtc_state);
if (old_crtc_state->has_pch_encoder)
ilk_fdi_disable(crtc);
ilk_pch_disable(state, crtc);
intel_encoders_post_disable(state, crtc);
if (old_crtc_state->has_pch_encoder) {
ilk_disable_pch_transcoder(crtc);
if (HAS_PCH_CPT(dev_priv)) {
i915_reg_t reg;
u32 temp;
/* disable TRANS_DP_CTL */
reg = TRANS_DP_CTL(pipe);
temp = intel_de_read(dev_priv, reg);
temp &= ~(TRANS_DP_OUTPUT_ENABLE |
TRANS_DP_PORT_SEL_MASK);
temp |= TRANS_DP_PORT_SEL_NONE;
intel_de_write(dev_priv, reg, temp);
/* disable DPLL_SEL */
temp = intel_de_read(dev_priv, PCH_DPLL_SEL);
temp &= ~(TRANS_DPLL_ENABLE(pipe) | TRANS_DPLLB_SEL(pipe));
intel_de_write(dev_priv, PCH_DPLL_SEL, temp);
}
ilk_fdi_pll_disable(crtc);
}
if (old_crtc_state->has_pch_encoder)
ilk_pch_post_disable(state, crtc);
intel_set_cpu_fifo_underrun_reporting(dev_priv, pipe, true);
intel_set_pch_fifo_underrun_reporting(dev_priv, pipe, true);