[Intel-gfx] [PATCH 08/19] drm/i915: Convert the ddi cdclk code to get_display_clock_speed
Daniel Vetter
daniel at ffwll.ch
Tue Mar 31 06:48:52 PDT 2015
On Tue, Mar 31, 2015 at 02:15:56PM +0100, Damien Lespiau wrote:
> On Tue, Mar 31, 2015 at 02:12:01PM +0300, Mika Kahola wrote:
> > Unify the HSW/BDW/SKL cdclk extraction code to conform to the same
> > .get_display_clock_speed() mold that all the other platforms
> > use.
> >
> > v2: Update due to SKL code getting added
>
> Having done the same rebase last week, I'm fairly sure there were some
> work needed (intel_audio.c didn't exist in the v2 of this patch).
> Usually that's enough a v3 comment:
>
> v3: Rebase on top of -nightly (introduction of intel_audio.c) (Mika Kahola)
>
> or something.
Added and merged all the reviewed patches, thanks.
-Daniel
>
> Reviewed-by: Damien Lespiau <damien.lespiau at intel.com>
>
> > Signed-off-by: Ville Syrjälä <ville.syrjala at linux.intel.com>
> > Signed-off-by: Mika Kahola <mika.kahola at intel.com>
> > ---
> > drivers/gpu/drm/i915/intel_audio.c | 3 +-
> > drivers/gpu/drm/i915/intel_ddi.c | 101 +----------------------------------
> > drivers/gpu/drm/i915/intel_display.c | 98 ++++++++++++++++++++++++++++++++-
> > drivers/gpu/drm/i915/intel_dp.c | 2 +-
> > drivers/gpu/drm/i915/intel_drv.h | 1 -
> > drivers/gpu/drm/i915/intel_pm.c | 2 +-
> > 6 files changed, 102 insertions(+), 105 deletions(-)
> >
> > diff --git a/drivers/gpu/drm/i915/intel_audio.c b/drivers/gpu/drm/i915/intel_audio.c
> > index 2396cc7..0d5b1ce 100644
> > --- a/drivers/gpu/drm/i915/intel_audio.c
> > +++ b/drivers/gpu/drm/i915/intel_audio.c
> > @@ -485,7 +485,8 @@ static int i915_audio_component_get_cdclk_freq(struct device *dev)
> > return -ENODEV;
> >
> > intel_display_power_get(dev_priv, POWER_DOMAIN_AUDIO);
> > - ret = intel_ddi_get_cdclk_freq(dev_priv);
> > + ret = dev_priv->display.get_display_clock_speed(dev_priv->dev);
> > +
> > intel_display_power_put(dev_priv, POWER_DOMAIN_AUDIO);
> >
> > return ret;
> > diff --git a/drivers/gpu/drm/i915/intel_ddi.c b/drivers/gpu/drm/i915/intel_ddi.c
> > index 47b9307..8c692d8 100644
> > --- a/drivers/gpu/drm/i915/intel_ddi.c
> > +++ b/drivers/gpu/drm/i915/intel_ddi.c
> > @@ -1689,105 +1689,6 @@ static void intel_disable_ddi(struct intel_encoder *intel_encoder)
> > }
> > }
> >
> > -static int skl_get_cdclk_freq(struct drm_i915_private *dev_priv)
> > -{
> > - uint32_t lcpll1 = I915_READ(LCPLL1_CTL);
> > - uint32_t cdctl = I915_READ(CDCLK_CTL);
> > - uint32_t linkrate;
> > -
> > - if (!(lcpll1 & LCPLL_PLL_ENABLE)) {
> > - WARN(1, "LCPLL1 not enabled\n");
> > - return 24000; /* 24MHz is the cd freq with NSSC ref */
> > - }
> > -
> > - if ((cdctl & CDCLK_FREQ_SEL_MASK) == CDCLK_FREQ_540)
> > - return 540000;
> > -
> > - linkrate = (I915_READ(DPLL_CTRL1) &
> > - DPLL_CRTL1_LINK_RATE_MASK(SKL_DPLL0)) >> 1;
> > -
> > - if (linkrate == DPLL_CRTL1_LINK_RATE_2160 ||
> > - linkrate == DPLL_CRTL1_LINK_RATE_1080) {
> > - /* vco 8640 */
> > - switch (cdctl & CDCLK_FREQ_SEL_MASK) {
> > - case CDCLK_FREQ_450_432:
> > - return 432000;
> > - case CDCLK_FREQ_337_308:
> > - return 308570;
> > - case CDCLK_FREQ_675_617:
> > - return 617140;
> > - default:
> > - WARN(1, "Unknown cd freq selection\n");
> > - }
> > - } else {
> > - /* vco 8100 */
> > - switch (cdctl & CDCLK_FREQ_SEL_MASK) {
> > - case CDCLK_FREQ_450_432:
> > - return 450000;
> > - case CDCLK_FREQ_337_308:
> > - return 337500;
> > - case CDCLK_FREQ_675_617:
> > - return 675000;
> > - default:
> > - WARN(1, "Unknown cd freq selection\n");
> > - }
> > - }
> > -
> > - /* error case, do as if DPLL0 isn't enabled */
> > - return 24000;
> > -}
> > -
> > -static int bdw_get_cdclk_freq(struct drm_i915_private *dev_priv)
> > -{
> > - uint32_t lcpll = I915_READ(LCPLL_CTL);
> > - uint32_t freq = lcpll & LCPLL_CLK_FREQ_MASK;
> > -
> > - if (lcpll & LCPLL_CD_SOURCE_FCLK)
> > - return 800000;
> > - else if (I915_READ(FUSE_STRAP) & HSW_CDCLK_LIMIT)
> > - return 450000;
> > - else if (freq == LCPLL_CLK_FREQ_450)
> > - return 450000;
> > - else if (freq == LCPLL_CLK_FREQ_54O_BDW)
> > - return 540000;
> > - else if (freq == LCPLL_CLK_FREQ_337_5_BDW)
> > - return 337500;
> > - else
> > - return 675000;
> > -}
> > -
> > -static int hsw_get_cdclk_freq(struct drm_i915_private *dev_priv)
> > -{
> > - struct drm_device *dev = dev_priv->dev;
> > - uint32_t lcpll = I915_READ(LCPLL_CTL);
> > - uint32_t freq = lcpll & LCPLL_CLK_FREQ_MASK;
> > -
> > - if (lcpll & LCPLL_CD_SOURCE_FCLK)
> > - return 800000;
> > - else if (I915_READ(FUSE_STRAP) & HSW_CDCLK_LIMIT)
> > - return 450000;
> > - else if (freq == LCPLL_CLK_FREQ_450)
> > - return 450000;
> > - else if (IS_HSW_ULT(dev))
> > - return 337500;
> > - else
> > - return 540000;
> > -}
> > -
> > -int intel_ddi_get_cdclk_freq(struct drm_i915_private *dev_priv)
> > -{
> > - struct drm_device *dev = dev_priv->dev;
> > -
> > - if (IS_SKYLAKE(dev))
> > - return skl_get_cdclk_freq(dev_priv);
> > -
> > - if (IS_BROADWELL(dev))
> > - return bdw_get_cdclk_freq(dev_priv);
> > -
> > - /* Haswell */
> > - return hsw_get_cdclk_freq(dev_priv);
> > -}
> > -
> > static void hsw_ddi_pll_enable(struct drm_i915_private *dev_priv,
> > struct intel_shared_dpll *pll)
> > {
> > @@ -1974,7 +1875,7 @@ void intel_ddi_pll_init(struct drm_device *dev)
> > hsw_shared_dplls_init(dev_priv);
> >
> > DRM_DEBUG_KMS("CDCLK running at %dKHz\n",
> > - intel_ddi_get_cdclk_freq(dev_priv));
> > + dev_priv->display.get_display_clock_speed(dev));
> >
> > if (IS_SKYLAKE(dev)) {
> > if (!(I915_READ(LCPLL1_CTL) & LCPLL_PLL_ENABLE))
> > diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c
> > index 4a4fdb0..6e33258 100644
> > --- a/drivers/gpu/drm/i915/intel_display.c
> > +++ b/drivers/gpu/drm/i915/intel_display.c
> > @@ -5864,6 +5864,93 @@ static int intel_crtc_compute_config(struct intel_crtc *crtc,
> > return 0;
> > }
> >
> > +static int skylake_get_display_clock_speed(struct drm_device *dev)
> > +{
> > + struct drm_i915_private *dev_priv = to_i915(dev);
> > + uint32_t lcpll1 = I915_READ(LCPLL1_CTL);
> > + uint32_t cdctl = I915_READ(CDCLK_CTL);
> > + uint32_t linkrate;
> > +
> > + if (!(lcpll1 & LCPLL_PLL_ENABLE)) {
> > + WARN(1, "LCPLL1 not enabled\n");
> > + return 24000; /* 24MHz is the cd freq with NSSC ref */
> > + }
> > +
> > + if ((cdctl & CDCLK_FREQ_SEL_MASK) == CDCLK_FREQ_540)
> > + return 540000;
> > +
> > + linkrate = (I915_READ(DPLL_CTRL1) &
> > + DPLL_CRTL1_LINK_RATE_MASK(SKL_DPLL0)) >> 1;
> > +
> > + if (linkrate == DPLL_CRTL1_LINK_RATE_2160 ||
> > + linkrate == DPLL_CRTL1_LINK_RATE_1080) {
> > + /* vco 8640 */
> > + switch (cdctl & CDCLK_FREQ_SEL_MASK) {
> > + case CDCLK_FREQ_450_432:
> > + return 432000;
> > + case CDCLK_FREQ_337_308:
> > + return 308570;
> > + case CDCLK_FREQ_675_617:
> > + return 617140;
> > + default:
> > + WARN(1, "Unknown cd freq selection\n");
> > + }
> > + } else {
> > + /* vco 8100 */
> > + switch (cdctl & CDCLK_FREQ_SEL_MASK) {
> > + case CDCLK_FREQ_450_432:
> > + return 450000;
> > + case CDCLK_FREQ_337_308:
> > + return 337500;
> > + case CDCLK_FREQ_675_617:
> > + return 675000;
> > + default:
> > + WARN(1, "Unknown cd freq selection\n");
> > + }
> > + }
> > +
> > + /* error case, do as if DPLL0 isn't enabled */
> > + return 24000;
> > +}
> > +
> > +static int broadwell_get_display_clock_speed(struct drm_device *dev)
> > +{
> > + struct drm_i915_private *dev_priv = dev->dev_private;
> > + uint32_t lcpll = I915_READ(LCPLL_CTL);
> > + uint32_t freq = lcpll & LCPLL_CLK_FREQ_MASK;
> > +
> > + if (lcpll & LCPLL_CD_SOURCE_FCLK)
> > + return 800000;
> > + else if (I915_READ(FUSE_STRAP) & HSW_CDCLK_LIMIT)
> > + return 450000;
> > + else if (freq == LCPLL_CLK_FREQ_450)
> > + return 450000;
> > + else if (freq == LCPLL_CLK_FREQ_54O_BDW)
> > + return 540000;
> > + else if (freq == LCPLL_CLK_FREQ_337_5_BDW)
> > + return 337500;
> > + else
> > + return 675000;
> > +}
> > +
> > +static int haswell_get_display_clock_speed(struct drm_device *dev)
> > +{
> > + struct drm_i915_private *dev_priv = dev->dev_private;
> > + uint32_t lcpll = I915_READ(LCPLL_CTL);
> > + uint32_t freq = lcpll & LCPLL_CLK_FREQ_MASK;
> > +
> > + if (lcpll & LCPLL_CD_SOURCE_FCLK)
> > + return 800000;
> > + else if (I915_READ(FUSE_STRAP) & HSW_CDCLK_LIMIT)
> > + return 450000;
> > + else if (freq == LCPLL_CLK_FREQ_450)
> > + return 450000;
> > + else if (IS_HSW_ULT(dev))
> > + return 337500;
> > + else
> > + return 540000;
> > +}
> > +
> > static int valleyview_get_display_clock_speed(struct drm_device *dev)
> > {
> > struct drm_i915_private *dev_priv = dev->dev_private;
> > @@ -13687,7 +13774,16 @@ static void intel_init_display(struct drm_device *dev)
> > }
> >
> > /* Returns the core display clock speed */
> > - if (IS_VALLEYVIEW(dev))
> > + if (IS_SKYLAKE(dev))
> > + dev_priv->display.get_display_clock_speed =
> > + skylake_get_display_clock_speed;
> > + else if (IS_BROADWELL(dev))
> > + dev_priv->display.get_display_clock_speed =
> > + broadwell_get_display_clock_speed;
> > + else if (IS_HASWELL(dev))
> > + dev_priv->display.get_display_clock_speed =
> > + haswell_get_display_clock_speed;
> > + else if (IS_VALLEYVIEW(dev))
> > dev_priv->display.get_display_clock_speed =
> > valleyview_get_display_clock_speed;
> > else if (IS_GEN5(dev))
> > diff --git a/drivers/gpu/drm/i915/intel_dp.c b/drivers/gpu/drm/i915/intel_dp.c
> > index e38dbd5..047a52e 100644
> > --- a/drivers/gpu/drm/i915/intel_dp.c
> > +++ b/drivers/gpu/drm/i915/intel_dp.c
> > @@ -717,7 +717,7 @@ static uint32_t hsw_get_aux_clock_divider(struct intel_dp *intel_dp, int index)
> > if (intel_dig_port->port == PORT_A) {
> > if (index)
> > return 0;
> > - return DIV_ROUND_CLOSEST(intel_ddi_get_cdclk_freq(dev_priv), 2000);
> > + return DIV_ROUND_CLOSEST(dev_priv->display.get_display_clock_speed(dev), 2000);
> > } else if (dev_priv->pch_id == INTEL_PCH_LPT_DEVICE_ID_TYPE) {
> > /* Workaround for non-ULT HSW */
> > switch (index) {
> > diff --git a/drivers/gpu/drm/i915/intel_drv.h b/drivers/gpu/drm/i915/intel_drv.h
> > index fca7b9f..4f2ed95 100644
> > --- a/drivers/gpu/drm/i915/intel_drv.h
> > +++ b/drivers/gpu/drm/i915/intel_drv.h
> > @@ -856,7 +856,6 @@ void hsw_fdi_link_train(struct drm_crtc *crtc);
> > void intel_ddi_init(struct drm_device *dev, enum port port);
> > enum port intel_ddi_get_encoder_port(struct intel_encoder *intel_encoder);
> > bool intel_ddi_get_hw_state(struct intel_encoder *encoder, enum pipe *pipe);
> > -int intel_ddi_get_cdclk_freq(struct drm_i915_private *dev_priv);
> > void intel_ddi_pll_init(struct drm_device *dev);
> > void intel_ddi_enable_transcoder_func(struct drm_crtc *crtc);
> > void intel_ddi_disable_transcoder_func(struct drm_i915_private *dev_priv,
> > diff --git a/drivers/gpu/drm/i915/intel_pm.c b/drivers/gpu/drm/i915/intel_pm.c
> > index fa4ccb3..e1392e7 100644
> > --- a/drivers/gpu/drm/i915/intel_pm.c
> > +++ b/drivers/gpu/drm/i915/intel_pm.c
> > @@ -1792,7 +1792,7 @@ hsw_compute_linetime_wm(struct drm_device *dev, struct drm_crtc *crtc)
> > linetime = DIV_ROUND_CLOSEST(mode->crtc_htotal * 1000 * 8,
> > mode->crtc_clock);
> > ips_linetime = DIV_ROUND_CLOSEST(mode->crtc_htotal * 1000 * 8,
> > - intel_ddi_get_cdclk_freq(dev_priv));
> > + dev_priv->display.get_display_clock_speed(dev_priv->dev));
> >
> > return PIPE_WM_LINETIME_IPS_LINETIME(ips_linetime) |
> > PIPE_WM_LINETIME_TIME(linetime);
> > --
> > 1.9.1
> >
> > _______________________________________________
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--
Daniel Vetter
Software Engineer, Intel Corporation
http://blog.ffwll.ch
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