From: Daniel Vetter Date: Wed, 25 Jun 2014 19:01:47 +0000 (+0300) Subject: drm/i915: Remove spll_refcount for hsw X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=7ca1ac135bc4d566e460230133ff959bb1bfcf88;p=GitHub%2Fexynos8895%2Fandroid_kernel_samsung_universal8895.git drm/i915: Remove spll_refcount for hsw SPLL would be a reference clock we could potentially share, especially if we want to use the SSC mode. But currently we don't, so let's rip out this complexity for a simpler conversion to the new display pll framework. Reviewed-by: Paulo Zanoni Signed-off-by: Daniel Vetter --- diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h index 41191f11af60..a1650d0ba6af 100644 --- a/drivers/gpu/drm/i915/i915_drv.h +++ b/drivers/gpu/drm/i915/i915_drv.h @@ -229,7 +229,6 @@ void intel_link_compute_m_n(int bpp, int nlanes, struct intel_link_m_n *m_n); struct intel_ddi_plls { - int spll_refcount; int wrpll1_refcount; int wrpll2_refcount; }; diff --git a/drivers/gpu/drm/i915/intel_ddi.c b/drivers/gpu/drm/i915/intel_ddi.c index 6cc79c83772c..bd8b1ebe8fa2 100644 --- a/drivers/gpu/drm/i915/intel_ddi.c +++ b/drivers/gpu/drm/i915/intel_ddi.c @@ -394,14 +394,11 @@ void intel_ddi_put_crtc_pll(struct drm_crtc *crtc) switch (intel_crtc->ddi_pll_sel) { case PORT_CLK_SEL_SPLL: - plls->spll_refcount--; - if (plls->spll_refcount == 0) { - DRM_DEBUG_KMS("Disabling SPLL\n"); - val = I915_READ(SPLL_CTL); - WARN_ON(!(val & SPLL_PLL_ENABLE)); - I915_WRITE(SPLL_CTL, val & ~SPLL_PLL_ENABLE); - POSTING_READ(SPLL_CTL); - } + DRM_DEBUG_KMS("Disabling SPLL\n"); + val = I915_READ(SPLL_CTL); + WARN_ON(!(val & SPLL_PLL_ENABLE)); + I915_WRITE(SPLL_CTL, val & ~SPLL_PLL_ENABLE); + POSTING_READ(SPLL_CTL); break; case PORT_CLK_SEL_WRPLL1: plls->wrpll1_refcount--; @@ -425,7 +422,6 @@ void intel_ddi_put_crtc_pll(struct drm_crtc *crtc) break; } - WARN(plls->spll_refcount < 0, "Invalid SPLL refcount\n"); WARN(plls->wrpll1_refcount < 0, "Invalid WRPLL1 refcount\n"); WARN(plls->wrpll2_refcount < 0, "Invalid WRPLL2 refcount\n"); @@ -821,16 +817,9 @@ bool intel_ddi_pll_select(struct intel_crtc *intel_crtc) } } else if (type == INTEL_OUTPUT_ANALOG) { - if (plls->spll_refcount == 0) { - DRM_DEBUG_KMS("Using SPLL on pipe %c\n", - pipe_name(pipe)); - plls->spll_refcount++; - intel_crtc->ddi_pll_sel = PORT_CLK_SEL_SPLL; - } else { - DRM_ERROR("SPLL already in use\n"); - return false; - } - + DRM_DEBUG_KMS("Using SPLL on pipe %c\n", + pipe_name(pipe)); + intel_crtc->ddi_pll_sel = PORT_CLK_SEL_SPLL; } else { WARN(1, "Invalid DDI encoder type %d\n", type); return false; @@ -869,13 +858,13 @@ void intel_ddi_pll_enable(struct intel_crtc *crtc) return; case PORT_CLK_SEL_SPLL: - pll_name = "SPLL"; - reg = SPLL_CTL; - refcount = plls->spll_refcount; new_val = SPLL_PLL_ENABLE | SPLL_PLL_FREQ_1350MHz | SPLL_PLL_SSC; - break; - + WARN(I915_READ(SPLL_CTL) & enable_bit, "SPLL already enabled\n"); + I915_WRITE(SPLL_CTL, new_val); + POSTING_READ(SPLL_CTL); + udelay(20); + return; case PORT_CLK_SEL_WRPLL1: case PORT_CLK_SEL_WRPLL2: if (crtc->ddi_pll_sel == PORT_CLK_SEL_WRPLL1) { @@ -1188,7 +1177,6 @@ void intel_ddi_setup_hw_pll_state(struct drm_device *dev) enum pipe pipe; struct intel_crtc *intel_crtc; - dev_priv->ddi_plls.spll_refcount = 0; dev_priv->ddi_plls.wrpll1_refcount = 0; dev_priv->ddi_plls.wrpll2_refcount = 0; @@ -1205,9 +1193,6 @@ void intel_ddi_setup_hw_pll_state(struct drm_device *dev) pipe); switch (intel_crtc->ddi_pll_sel) { - case PORT_CLK_SEL_SPLL: - dev_priv->ddi_plls.spll_refcount++; - break; case PORT_CLK_SEL_WRPLL1: dev_priv->ddi_plls.wrpll1_refcount++; break;