[Intel-gfx] [PATCH 01/14] drm/i915: Extract intel_{get,set}_m_n()

Ville Syrjala
2022-01-27T09:33:15Z

Make the M/N setup/readout a bit less repitive by extracting
a few small helpers.

Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
---
drivers/gpu/drm/i915/display/intel_display.c | 109 ++++++++-----------
1 file changed, 47 insertions(+), 62 deletions(-)

diff --git a/drivers/gpu/drm/i915/display/intel_display.c b/drivers/gpu/drm/i915/display/intel_display.c
index 91add3d85151..f76faa195cb9 100644
--- a/drivers/gpu/drm/i915/display/intel_display.c
+++ b/drivers/gpu/drm/i915/display/intel_display.c
@@ -3113,6 +3113,17 @@ static void intel_panel_sanitize_ssc(struct drm_i915_private *dev_priv)
}
}

+static void intel_set_m_n(struct drm_i915_private *i915,
+ const struct intel_link_m_n *m_n,
+ i915_reg_t data_m_reg, i915_reg_t data_n_reg,
+ i915_reg_t link_m_reg, i915_reg_t link_n_reg)
+{
+ intel_de_write(i915, data_m_reg, TU_SIZE(m_n->tu) | m_n->gmch_m);
+ intel_de_write(i915, data_n_reg, m_n->gmch_n);
+ intel_de_write(i915, link_m_reg, m_n->link_m);
+ intel_de_write(i915, link_n_reg, m_n->link_n);
+}
+
static void intel_pch_transcoder_set_m_n(const struct intel_crtc_state *crtc_state,
const struct intel_link_m_n *m_n)
{
@@ -3120,11 +3131,9 @@ static void intel_pch_transcoder_set_m_n(const struct intel_crtc_state *crtc_sta
struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
enum pipe pipe = crtc->pipe;

- intel_de_write(dev_priv, PCH_TRANS_DATA_M1(pipe),
- TU_SIZE(m_n->tu) | m_n->gmch_m);
- intel_de_write(dev_priv, PCH_TRANS_DATA_N1(pipe), m_n->gmch_n);
- intel_de_write(dev_priv, PCH_TRANS_LINK_M1(pipe), m_n->link_m);
- intel_de_write(dev_priv, PCH_TRANS_LINK_N1(pipe), m_n->link_n);
+ intel_set_m_n(dev_priv, m_n,
+ PCH_TRANS_DATA_M1(pipe), PCH_TRANS_DATA_N1(pipe),
+ PCH_TRANS_LINK_M1(pipe), PCH_TRANS_LINK_N1(pipe));
}

static bool transcoder_has_m2_n2(struct drm_i915_private *dev_priv,
@@ -3150,35 +3159,23 @@ static void intel_cpu_transcoder_set_m_n(const struct intel_crtc_state *crtc_sta
enum transcoder transcoder = crtc_state->cpu_transcoder;

if (DISPLAY_VER(dev_priv) >= 5) {
- intel_de_write(dev_priv, PIPE_DATA_M1(transcoder),
- TU_SIZE(m_n->tu) | m_n->gmch_m);
- intel_de_write(dev_priv, PIPE_DATA_N1(transcoder),
- m_n->gmch_n);
- intel_de_write(dev_priv, PIPE_LINK_M1(transcoder),
- m_n->link_m);
- intel_de_write(dev_priv, PIPE_LINK_N1(transcoder),
- m_n->link_n);
+ intel_set_m_n(dev_priv, m_n,
+ PIPE_DATA_M1(transcoder), PIPE_DATA_N1(transcoder),
+ PIPE_LINK_M1(transcoder), PIPE_LINK_N1(transcoder));
/*
* M2_N2 registers are set only if DRRS is supported
* (to make sure the registers are not unnecessarily accessed).
*/
if (m2_n2 && crtc_state->has_drrs &&
transcoder_has_m2_n2(dev_priv, transcoder)) {
- intel_de_write(dev_priv, PIPE_DATA_M2(transcoder),
- TU_SIZE(m2_n2->tu) | m2_n2->gmch_m);
- intel_de_write(dev_priv, PIPE_DATA_N2(transcoder),
- m2_n2->gmch_n);
- intel_de_write(dev_priv, PIPE_LINK_M2(transcoder),
- m2_n2->link_m);
- intel_de_write(dev_priv, PIPE_LINK_N2(transcoder),
- m2_n2->link_n);
+ intel_set_m_n(dev_priv, m2_n2,
+ PIPE_DATA_M2(transcoder), PIPE_DATA_N2(transcoder),
+ PIPE_LINK_M2(transcoder), PIPE_LINK_N2(transcoder));
}
} else {
- intel_de_write(dev_priv, PIPE_DATA_M_G4X(pipe),
- TU_SIZE(m_n->tu) | m_n->gmch_m);
- intel_de_write(dev_priv, PIPE_DATA_N_G4X(pipe), m_n->gmch_n);
- intel_de_write(dev_priv, PIPE_LINK_M_G4X(pipe), m_n->link_m);
- intel_de_write(dev_priv, PIPE_LINK_N_G4X(pipe), m_n->link_n);
+ intel_set_m_n(dev_priv, m_n,
+ PIPE_DATA_M_G4X(pipe), PIPE_DATA_N_G4X(pipe),
+ PIPE_LINK_M_G4X(pipe), PIPE_LINK_N_G4X(pipe));
}
}

@@ -3863,6 +3860,18 @@ int ilk_get_lanes_required(int target_clock, int link_bw, int bpp)
return DIV_ROUND_UP(bps, link_bw * 8);
}

+static void intel_get_m_n(struct drm_i915_private *i915,
+ struct intel_link_m_n *m_n,
+ i915_reg_t data_m_reg, i915_reg_t data_n_reg,
+ i915_reg_t link_m_reg, i915_reg_t link_n_reg)
+{
+ m_n->link_m = intel_de_read(i915, link_m_reg);
+ m_n->link_n = intel_de_read(i915, link_n_reg);
+ m_n->gmch_m = intel_de_read(i915, data_m_reg) & ~TU_SIZE_MASK;
+ m_n->gmch_n = intel_de_read(i915, data_n_reg);
+ m_n->tu = ((intel_de_read(i915, data_m_reg) & TU_SIZE_MASK) >> TU_SIZE_SHIFT) + 1;
+}
+
static void intel_pch_transcoder_get_m_n(struct intel_crtc *crtc,
struct intel_link_m_n *m_n)
{
@@ -3870,13 +3879,9 @@ static void intel_pch_transcoder_get_m_n(struct intel_crtc *crtc,
struct drm_i915_private *dev_priv = to_i915(dev);
enum pipe pipe = crtc->pipe;

- m_n->link_m = intel_de_read(dev_priv, PCH_TRANS_LINK_M1(pipe));
- m_n->link_n = intel_de_read(dev_priv, PCH_TRANS_LINK_N1(pipe));
- m_n->gmch_m = intel_de_read(dev_priv, PCH_TRANS_DATA_M1(pipe))
- & ~TU_SIZE_MASK;
- m_n->gmch_n = intel_de_read(dev_priv, PCH_TRANS_DATA_N1(pipe));
- m_n->tu = ((intel_de_read(dev_priv, PCH_TRANS_DATA_M1(pipe))
- & TU_SIZE_MASK) >> TU_SIZE_SHIFT) + 1;
+ intel_get_m_n(dev_priv, m_n,
+ PCH_TRANS_DATA_M1(pipe), PCH_TRANS_DATA_N1(pipe),
+ PCH_TRANS_LINK_M1(pipe), PCH_TRANS_LINK_N1(pipe));
}

static void intel_cpu_transcoder_get_m_n(struct intel_crtc *crtc,
@@ -3888,39 +3893,19 @@ static void intel_cpu_transcoder_get_m_n(struct intel_crtc *crtc,
enum pipe pipe = crtc->pipe;

if (DISPLAY_VER(dev_priv) >= 5) {
- m_n->link_m = intel_de_read(dev_priv,
- PIPE_LINK_M1(transcoder));
- m_n->link_n = intel_de_read(dev_priv,
- PIPE_LINK_N1(transcoder));
- m_n->gmch_m = intel_de_read(dev_priv,
- PIPE_DATA_M1(transcoder))
- & ~TU_SIZE_MASK;
- m_n->gmch_n = intel_de_read(dev_priv,
- PIPE_DATA_N1(transcoder));
- m_n->tu = ((intel_de_read(dev_priv, PIPE_DATA_M1(transcoder))
- & TU_SIZE_MASK) >> TU_SIZE_SHIFT) + 1;
+ intel_get_m_n(dev_priv, m_n,
+ PIPE_DATA_M1(transcoder), PIPE_DATA_N1(transcoder),
+ PIPE_LINK_M1(transcoder), PIPE_LINK_N1(transcoder));

if (m2_n2 && transcoder_has_m2_n2(dev_priv, transcoder)) {
- m2_n2->link_m = intel_de_read(dev_priv,
- PIPE_LINK_M2(transcoder));
- m2_n2->link_n = intel_de_read(dev_priv,
- PIPE_LINK_N2(transcoder));
- m2_n2->gmch_m = intel_de_read(dev_priv,
- PIPE_DATA_M2(transcoder))
- & ~TU_SIZE_MASK;
- m2_n2->gmch_n = intel_de_read(dev_priv,
- PIPE_DATA_N2(transcoder));
- m2_n2->tu = ((intel_de_read(dev_priv, PIPE_DATA_M2(transcoder))
- & TU_SIZE_MASK) >> TU_SIZE_SHIFT) + 1;
+ intel_get_m_n(dev_priv, m2_n2,
+ PIPE_DATA_M2(transcoder), PIPE_DATA_N2(transcoder),
+ PIPE_LINK_M2(transcoder), PIPE_LINK_N2(transcoder));
}
} else {
- m_n->link_m = intel_de_read(dev_priv, PIPE_LINK_M_G4X(pipe));
- m_n->link_n = intel_de_read(dev_priv, PIPE_LINK_N_G4X(pipe));
- m_n->gmch_m = intel_de_read(dev_priv, PIPE_DATA_M_G4X(pipe))
- & ~TU_SIZE_MASK;
- m_n->gmch_n = intel_de_read(dev_priv, PIPE_DATA_N_G4X(pipe));
- m_n->tu = ((intel_de_read(dev_priv, PIPE_DATA_M_G4X(pipe))
- & TU_SIZE_MASK) >> TU_SIZE_SHIFT) + 1;
+ intel_get_m_n(dev_priv, m_n,
+ PIPE_DATA_M_G4X(pipe), PIPE_DATA_N_G4X(pipe),
+ PIPE_LINK_M_G4X(pipe), PIPE_LINK_N_G4X(pipe));
}
}

--
2.34.1