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drm/i915: split refclk code out of ironlake_crtc_mode_set 

Just a cleanup to make the mode_set function more manageable.

Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Tested-By: Eugeni Dodonov <eugeni.dodonov@intel.com>
Reviewed-By: Eugeni Dodonov <eugeni.dodonov@intel.com>
Signed-off-by: Keith Packard <keithp@keithp.com>
This commit is contained in:
Jesse Barnes 2011-09-02 13:03:05 -07:00 committed by Keith Packard
parent 27f8227b1e
commit d9d444cbc5
1 changed files with 35 additions and 4 deletions
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39
drivers/gpu/drm/i915/intel_display.c
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@ -5241,6 +5241,40 @@ void ironlake_init_pch_refclk(struct drm_device *dev)
}
}
static int ironlake_get_refclk(struct drm_crtc *crtc)
{
struct drm_device *dev = crtc->dev;
struct drm_i915_private *dev_priv = dev->dev_private;
struct intel_encoder *encoder;
struct drm_mode_config *mode_config = &dev->mode_config;
struct intel_encoder *edp_encoder = NULL;
int num_connectors = 0;
bool is_lvds = false;
list_for_each_entry(encoder, &mode_config->encoder_list, base.head) {
if (encoder->base.crtc != crtc)
continue;
switch (encoder->type) {
case INTEL_OUTPUT_LVDS:
is_lvds = true;
break;
case INTEL_OUTPUT_EDP:
edp_encoder = encoder;
break;
}
num_connectors++;
}
if (is_lvds && intel_panel_use_ssc(dev_priv) && num_connectors < 2) {
DRM_DEBUG_KMS("using SSC reference clock of %d MHz\n",
dev_priv->lvds_ssc_freq);
return dev_priv->lvds_ssc_freq * 1000;
}
return 120000;
}
static int ironlake_crtc_mode_set(struct drm_crtc *crtc,
struct drm_display_mode *mode,
struct drm_display_mode *adjusted_mode,
@ -5300,10 +5334,7 @@ static int ironlake_crtc_mode_set(struct drm_crtc *crtc,
num_connectors++;
}
/*
* Every reference clock in a PCH system is 120MHz
*/
refclk = 120000;
refclk = ironlake_get_refclk(crtc);
/*
* Returns a set of divisors for the desired target clock with the given