From: Ville Syrjälä <[email protected]> Use kHz units in vlv cdclk code since that's more customary.
Also replace the precomputed 90% values with *9/10 computation for extra clarity. Signed-off-by: Ville Syrjälä <[email protected]> --- drivers/gpu/drm/i915/intel_display.c | 27 ++++++++++++++------------- drivers/gpu/drm/i915/intel_i2c.c | 2 +- drivers/gpu/drm/i915/intel_pm.c | 2 +- 3 files changed, 16 insertions(+), 15 deletions(-) diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c index 5762726..5f66dc8 100644 --- a/drivers/gpu/drm/i915/intel_display.c +++ b/drivers/gpu/drm/i915/intel_display.c @@ -4429,6 +4429,7 @@ static void modeset_update_crtc_power_domains(struct drm_device *dev) intel_display_set_init_power(dev_priv, false); } +/* returns HPLL frequency in kHz */ int valleyview_get_vco(struct drm_i915_private *dev_priv) { int hpll_freq, vco_freq[] = { 800, 1600, 2000, 2400 }; @@ -4439,7 +4440,7 @@ int valleyview_get_vco(struct drm_i915_private *dev_priv) CCK_FUSE_HPLL_FREQ_MASK; mutex_unlock(&dev_priv->dpio_lock); - return vco_freq[hpll_freq]; + return vco_freq[hpll_freq] * 1000; } /* Adjust CDclk dividers to allow high res or save power if possible */ @@ -4451,9 +4452,9 @@ static void valleyview_set_cdclk(struct drm_device *dev, int cdclk) WARN_ON(valleyview_cur_cdclk(dev_priv) != dev_priv->vlv_cdclk_freq); dev_priv->vlv_cdclk_freq = cdclk; - if (cdclk >= 320) /* jump to highest voltage for 400MHz too */ + if (cdclk >= 320000) /* jump to highest voltage for 400MHz too */ cmd = 2; - else if (cdclk == 266) + else if (cdclk == 266667) cmd = 1; else cmd = 0; @@ -4470,11 +4471,11 @@ static void valleyview_set_cdclk(struct drm_device *dev, int cdclk) } mutex_unlock(&dev_priv->rps.hw_lock); - if (cdclk == 400) { + if (cdclk == 400000) { u32 divider, vco; vco = valleyview_get_vco(dev_priv); - divider = ((vco << 1) / cdclk) - 1; + divider = DIV_ROUND_CLOSEST(vco << 1, cdclk) - 1; mutex_lock(&dev_priv->dpio_lock); /* adjust cdclk divider */ @@ -4494,7 +4495,7 @@ static void valleyview_set_cdclk(struct drm_device *dev, int cdclk) * For high bandwidth configs, we set a higher latency in the bunit * so that the core display fetch happens in time to avoid underruns. */ - if (cdclk == 400) + if (cdclk == 400000) val |= 4500 / 250; /* 4.5 usec */ else val |= 3000 / 250; /* 3.0 usec */ @@ -4518,7 +4519,7 @@ int valleyview_cur_cdclk(struct drm_i915_private *dev_priv) divider &= 0xf; - cur_cdclk = (vco << 1) / (divider + 1); + cur_cdclk = DIV_ROUND_CLOSEST(vco << 1, divider + 1); return cur_cdclk; } @@ -4535,12 +4536,12 @@ static int valleyview_calc_cdclk(struct drm_i915_private *dev_priv, * So we check to see whether we're above 90% of the lower bin and * adjust if needed. */ - if (max_pixclk > 288000) { - return 400; - } else if (max_pixclk > 240000) { - return 320; - } else - return 266; + if (max_pixclk > 320000*9/10) + return 400000; + else if (max_pixclk > 266667*9/10) + return 320000; + else + return 266667; /* Looks like the 200MHz CDclk freq doesn't work on some configs */ } diff --git a/drivers/gpu/drm/i915/intel_i2c.c b/drivers/gpu/drm/i915/intel_i2c.c index d33b61d..9ce4f09 100644 --- a/drivers/gpu/drm/i915/intel_i2c.c +++ b/drivers/gpu/drm/i915/intel_i2c.c @@ -86,7 +86,7 @@ static void gmbus_set_freq(struct drm_i915_private *dev_priv) BUG_ON(!IS_VALLEYVIEW(dev_priv->dev)); - vco = valleyview_get_vco(dev_priv); + vco = valleyview_get_vco(dev_priv) / 1000; /* Get the CDCLK divide ratio */ cdclk_div = get_disp_clk_div(dev_priv, CDCLK); diff --git a/drivers/gpu/drm/i915/intel_pm.c b/drivers/gpu/drm/i915/intel_pm.c index 5024bc8..a9ddf74 100644 --- a/drivers/gpu/drm/i915/intel_pm.c +++ b/drivers/gpu/drm/i915/intel_pm.c @@ -5536,7 +5536,7 @@ static void valleyview_init_clock_gating(struct drm_device *dev) DRM_DEBUG_DRIVER("DDR speed: %d MHz", dev_priv->mem_freq); dev_priv->vlv_cdclk_freq = valleyview_cur_cdclk(dev_priv); - DRM_DEBUG_DRIVER("Current CD clock rate: %d MHz", + DRM_DEBUG_DRIVER("Current CD clock rate: %d kHz", dev_priv->vlv_cdclk_freq); I915_WRITE(DSPCLK_GATE_D, VRHUNIT_CLOCK_GATE_DISABLE); -- 1.8.5.5 _______________________________________________ Intel-gfx mailing list [email protected] http://lists.freedesktop.org/mailman/listinfo/intel-gfx
