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drm/i915: Extract intel_crtc_pch_transcoder()

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Extract the code to determine which PCH transcoder we're using to a
small helper.

Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/1476464574-32230-2-git-send-email-ville.syrjala@linux.intel.com
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
This commit is contained in:
Ville Syrjälä 2016-10-14 20:02:53 +03:00
parent 862372bc8f
commit 65f2130cbd
2 changed files with 15 additions and 7 deletions
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21
drivers/gpu/drm/i915/intel_display.c
View File

@ -1926,6 +1926,18 @@ void lpt_disable_pch_transcoder(struct drm_i915_private *dev_priv)
I915_WRITE(TRANS_CHICKEN2(PIPE_A), val);
}
enum transcoder intel_crtc_pch_transcoder(struct intel_crtc *crtc)
{
struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
WARN_ON(!crtc->config->has_pch_encoder);
if (HAS_PCH_LPT(dev_priv))
return TRANSCODER_A;
else
return (enum transcoder) crtc->pipe;
}
/**
* intel_enable_pipe - enable a pipe, asserting requirements
* @crtc: crtc responsible for the pipe
@ -1939,7 +1951,6 @@ static void intel_enable_pipe(struct intel_crtc *crtc)
struct drm_i915_private *dev_priv = to_i915(dev);
enum pipe pipe = crtc->pipe;
enum transcoder cpu_transcoder = crtc->config->cpu_transcoder;
enum pipe pch_transcoder;
i915_reg_t reg;
u32 val;
@ -1949,11 +1960,6 @@ static void intel_enable_pipe(struct intel_crtc *crtc)
assert_cursor_disabled(dev_priv, pipe);
assert_sprites_disabled(dev_priv, pipe);
if (HAS_PCH_LPT(dev_priv))
pch_transcoder = TRANSCODER_A;
else
pch_transcoder = pipe;
/*
* A pipe without a PLL won't actually be able to drive bits from
* a plane. On ILK+ the pipe PLLs are integrated, so we don't
@ -1967,7 +1973,8 @@ static void intel_enable_pipe(struct intel_crtc *crtc)
} else {
if (crtc->config->has_pch_encoder) {
/* if driving the PCH, we need FDI enabled */
assert_fdi_rx_pll_enabled(dev_priv, pch_transcoder);
assert_fdi_rx_pll_enabled(dev_priv,
(enum pipe) intel_crtc_pch_transcoder(crtc));
assert_fdi_tx_pll_enabled(dev_priv,
(enum pipe) cpu_transcoder);
}

1
drivers/gpu/drm/i915/intel_drv.h
View File

@ -1191,6 +1191,7 @@ void i915_audio_component_init(struct drm_i915_private *dev_priv);
void i915_audio_component_cleanup(struct drm_i915_private *dev_priv);
/* intel_display.c */
enum transcoder intel_crtc_pch_transcoder(struct intel_crtc *crtc);
void skl_set_preferred_cdclk_vco(struct drm_i915_private *dev_priv, int vco);
void intel_update_rawclk(struct drm_i915_private *dev_priv);
int vlv_get_cck_clock(struct drm_i915_private *dev_priv,