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drm/i915: Extract the HSW DDI selection code into its own function 

Future platform will slightly change that.

Signed-off-by: Damien Lespiau <damien.lespiau@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
This commit is contained in:
Damien Lespiau 2014-07-29 18:06:18 +01:00 committed by Daniel Vetter
parent 74dd69280b
commit 7d2c81751c
1 changed files with 17 additions and 10 deletions
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27
drivers/gpu/drm/i915/intel_display.c
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@ -7607,6 +7607,22 @@ static int haswell_crtc_mode_set(struct drm_crtc *crtc,
return 0;
}
static void haswell_get_ddi_pll(struct drm_i915_private *dev_priv,
enum port port,
struct intel_crtc_config *pipe_config)
{
pipe_config->ddi_pll_sel = I915_READ(PORT_CLK_SEL(port));
switch (pipe_config->ddi_pll_sel) {
case PORT_CLK_SEL_WRPLL1:
pipe_config->shared_dpll = DPLL_ID_WRPLL1;
break;
case PORT_CLK_SEL_WRPLL2:
pipe_config->shared_dpll = DPLL_ID_WRPLL2;
break;
}
}
static void haswell_get_ddi_port_state(struct intel_crtc *crtc,
struct intel_crtc_config *pipe_config)
{
@ -7620,16 +7636,7 @@ static void haswell_get_ddi_port_state(struct intel_crtc *crtc,
port = (tmp & TRANS_DDI_PORT_MASK) >> TRANS_DDI_PORT_SHIFT;
pipe_config->ddi_pll_sel = I915_READ(PORT_CLK_SEL(port));
switch (pipe_config->ddi_pll_sel) {
case PORT_CLK_SEL_WRPLL1:
pipe_config->shared_dpll = DPLL_ID_WRPLL1;
break;
case PORT_CLK_SEL_WRPLL2:
pipe_config->shared_dpll = DPLL_ID_WRPLL2;
break;
}
haswell_get_ddi_pll(dev_priv, port, pipe_config);
if (pipe_config->shared_dpll >= 0) {
pll = &dev_priv->shared_dplls[pipe_config->shared_dpll];