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drm/i915: simplify config->pixel_multiplier handling 

We only ever check whether it's strictly bigger than one, so all the
is_sdvo/is_hdmi checks are redundant. Flatten the code a bit.

Also, s/temp/dpll_md/

Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
This commit is contained in:
Daniel Vetter 2013-04-19 11:14:37 +02:00
parent 9566e9af52
commit 198a037f02
1 changed files with 27 additions and 31 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

58
drivers/gpu/drm/i915/intel_display.c
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@ -4235,7 +4235,7 @@ static void vlv_update_pll(struct intel_crtc *crtc)
u32 dpll, mdiv;
u32 bestn, bestm1, bestm2, bestp1, bestp2;
bool is_hdmi;
u32 coreclk, reg_val, temp;
u32 coreclk, reg_val, dpll_md;
mutex_lock(&dev_priv->dpio_lock);
@ -4333,16 +4333,13 @@ static void vlv_update_pll(struct intel_crtc *crtc)
if (wait_for(((I915_READ(DPLL(pipe)) & DPLL_LOCK_VLV) == DPLL_LOCK_VLV), 1))
DRM_ERROR("DPLL %d failed to lock\n", pipe);
if (is_hdmi) {
temp = 0;
if (crtc->config.pixel_multiplier > 1) {
temp = (crtc->config.pixel_multiplier - 1)
<< DPLL_MD_UDI_MULTIPLIER_SHIFT;
}
I915_WRITE(DPLL_MD(pipe), temp);
POSTING_READ(DPLL_MD(pipe));
dpll_md = 0;
if (crtc->config.pixel_multiplier > 1) {
dpll_md = (crtc->config.pixel_multiplier - 1)
<< DPLL_MD_UDI_MULTIPLIER_SHIFT;
}
I915_WRITE(DPLL_MD(pipe), dpll_md);
POSTING_READ(DPLL_MD(pipe));
if (crtc->config.has_dp_encoder)
intel_dp_set_m_n(crtc);
@ -4374,14 +4371,15 @@ static void i9xx_update_pll(struct intel_crtc *crtc,
else
dpll |= DPLLB_MODE_DAC_SERIAL;
if (is_sdvo) {
if ((crtc->config.pixel_multiplier > 1) &&
(IS_I945G(dev) || IS_I945GM(dev) || IS_G33(dev))) {
dpll |= (crtc->config.pixel_multiplier - 1)
<< SDVO_MULTIPLIER_SHIFT_HIRES;
}
dpll |= DPLL_DVO_HIGH_SPEED;
if ((crtc->config.pixel_multiplier > 1) &&
(IS_I945G(dev) || IS_I945GM(dev) || IS_G33(dev))) {
dpll |= (crtc->config.pixel_multiplier - 1)
<< SDVO_MULTIPLIER_SHIFT_HIRES;
}
if (is_sdvo)
dpll |= DPLL_DVO_HIGH_SPEED;
if (intel_pipe_has_type(&crtc->base, INTEL_OUTPUT_DISPLAYPORT))
dpll |= DPLL_DVO_HIGH_SPEED;
@ -4441,15 +4439,12 @@ static void i9xx_update_pll(struct intel_crtc *crtc,
udelay(150);
if (INTEL_INFO(dev)->gen >= 4) {
u32 temp = 0;
if (is_sdvo) {
temp = 0;
if (crtc->config.pixel_multiplier > 1) {
temp = (crtc->config.pixel_multiplier - 1)
<< DPLL_MD_UDI_MULTIPLIER_SHIFT;
}
u32 dpll_md = 0;
if (crtc->config.pixel_multiplier > 1) {
dpll_md = (crtc->config.pixel_multiplier - 1)
<< DPLL_MD_UDI_MULTIPLIER_SHIFT;
}
I915_WRITE(DPLL_MD(pipe), temp);
I915_WRITE(DPLL_MD(pipe), dpll_md);
} else {
/* The pixel multiplier can only be updated once the
* DPLL is enabled and the clocks are stable.
@ -5562,13 +5557,14 @@ static uint32_t ironlake_compute_dpll(struct intel_crtc *intel_crtc,
dpll |= DPLLB_MODE_LVDS;
else
dpll |= DPLLB_MODE_DAC_SERIAL;
if (is_sdvo) {
if (intel_crtc->config.pixel_multiplier > 1) {
dpll |= (intel_crtc->config.pixel_multiplier - 1)
<< PLL_REF_SDVO_HDMI_MULTIPLIER_SHIFT;
}
dpll |= DPLL_DVO_HIGH_SPEED;
if (intel_crtc->config.pixel_multiplier > 1) {
dpll |= (intel_crtc->config.pixel_multiplier - 1)
<< PLL_REF_SDVO_HDMI_MULTIPLIER_SHIFT;
}
if (is_sdvo)
dpll |= DPLL_DVO_HIGH_SPEED;
if (intel_crtc->config.has_dp_encoder)
dpll |= DPLL_DVO_HIGH_SPEED;