[Intel-gfx] [PATCH 6/8] drm/i915: Split intel_ddi_compute_min_voltage_level() into platform variants

[Gustavo Sousa]

Quoting Ville Syrjala (2023-11-28 08:51:36-03:00)
>From: Ville Syrjälä <ville.syrjala at linux.intel.com>
>
>The mess inside intel_ddi_compute_min_voltage_level() is illegible.
>Clean it up a bit by splitting the internals into per-platform
>functions.
>
>TODO: make it a vfunc?
>
>Signed-off-by: Ville Syrjälä <ville.syrjala at linux.intel.com>

Reviewed-by: Gustavo Sousa <gustavo.sousa at intel.com>

>---
> drivers/gpu/drm/i915/display/intel_ddi.c | 37 +++++++++++++++++++-----
> 1 file changed, 30 insertions(+), 7 deletions(-)
>
>diff --git a/drivers/gpu/drm/i915/display/intel_ddi.c b/drivers/gpu/drm/i915/display/intel_ddi.c
>index 38f28c480b38..bcfcd7e789f0 100644
>--- a/drivers/gpu/drm/i915/display/intel_ddi.c
>+++ b/drivers/gpu/drm/i915/display/intel_ddi.c
>@@ -3672,16 +3672,39 @@ static bool intel_ddi_is_audio_enabled(struct drm_i915_private *dev_priv,
>                 AUDIO_OUTPUT_ENABLE(cpu_transcoder);
> }
> 
>+static int tgl_ddi_min_voltage_level(const struct intel_crtc_state *crtc_state)
>+{
>+        if (crtc_state->port_clock > 594000)
>+                return 2;
>+        else
>+                return 0;
>+}
>+
>+static int jsl_ddi_min_voltage_level(const struct intel_crtc_state *crtc_state)
>+{
>+        if (crtc_state->port_clock > 594000)
>+                return 3;
>+        else
>+                return 0;
>+}
>+
>+static int icl_ddi_min_voltage_level(const struct intel_crtc_state *crtc_state)
>+{
>+        if (crtc_state->port_clock > 594000)
>+                return 1;
>+        else
>+                return 0;
>+}
>+
> void intel_ddi_compute_min_voltage_level(struct drm_i915_private *dev_priv,
>                                          struct intel_crtc_state *crtc_state)
> {
>-        if (DISPLAY_VER(dev_priv) >= 12 && crtc_state->port_clock > 594000)
>-                crtc_state->min_voltage_level = 2;
>-        else if ((IS_JASPERLAKE(dev_priv) || IS_ELKHARTLAKE(dev_priv)) &&
>-                 crtc_state->port_clock > 594000)
>-                crtc_state->min_voltage_level = 3;
>-        else if (DISPLAY_VER(dev_priv) >= 11 && crtc_state->port_clock > 594000)
>-                crtc_state->min_voltage_level = 1;
>+        if (DISPLAY_VER(dev_priv) >= 12)
>+                crtc_state->min_voltage_level = tgl_ddi_min_voltage_level(crtc_state);
>+        else if (IS_JASPERLAKE(dev_priv) || IS_ELKHARTLAKE(dev_priv))
>+                crtc_state->min_voltage_level = jsl_ddi_min_voltage_level(crtc_state);
>+        else if (DISPLAY_VER(dev_priv) >= 11)
>+                crtc_state->min_voltage_level = icl_ddi_min_voltage_level(crtc_state);
> }
> 
> static enum transcoder bdw_transcoder_master_readout(struct drm_i915_private *dev_priv,
>-- 
>2.41.0
>