From: Jani Nikula Date: Wed, 25 Aug 2021 15:47:50 +0000 (+0300) Subject: drm/i915/fdi: move more FDI stuff to FDI link train hooks X-Git-Tag: v6.1-rc5~176^2~17^2~1227 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=12b2c3016d68b649e5d67530655c505bed7948aa;p=platform%2Fkernel%2Flinux-starfive.git drm/i915/fdi: move more FDI stuff to FDI link train hooks Accept slight duplication in the fdi link train hooks in exchange for simplification in ilk_pch_enable(). This lets us make ivb_update_fdi_bc_bifurcation() static again, now in intel_fdi.c. Reviewed-by: Rodrigo Vivi Signed-off-by: Jani Nikula Link: https://patchwork.freedesktop.org/patch/msgid/7984e670c6bb092d213d90f838d526d594d4a690.1629906431.git.jani.nikula@intel.com --- diff --git a/drivers/gpu/drm/i915/display/intel_display.c b/drivers/gpu/drm/i915/display/intel_display.c index c6552d9..b907c43 100644 --- a/drivers/gpu/drm/i915/display/intel_display.c +++ b/drivers/gpu/drm/i915/display/intel_display.c @@ -2059,14 +2059,6 @@ static void ilk_pch_enable(const struct intel_atomic_state *state, assert_pch_transcoder_disabled(dev_priv, pipe); - if (IS_IVYBRIDGE(dev_priv)) - ivb_update_fdi_bc_bifurcation(crtc_state); - - /* Write the TU size bits before fdi link training, so that error - * detection works. */ - intel_de_write(dev_priv, FDI_RX_TUSIZE1(pipe), - intel_de_read(dev_priv, PIPE_DATA_M1(pipe)) & TU_SIZE_MASK); - /* For PCH output, training FDI link */ dev_priv->display.fdi_link_train(crtc, crtc_state); diff --git a/drivers/gpu/drm/i915/display/intel_fdi.c b/drivers/gpu/drm/i915/display/intel_fdi.c index f8ffd5c..f5e4298 100644 --- a/drivers/gpu/drm/i915/display/intel_fdi.c +++ b/drivers/gpu/drm/i915/display/intel_fdi.c @@ -195,7 +195,7 @@ static void cpt_set_fdi_bc_bifurcation(struct drm_i915_private *dev_priv, bool e intel_de_posting_read(dev_priv, SOUTH_CHICKEN1); } -void ivb_update_fdi_bc_bifurcation(const struct intel_crtc_state *crtc_state) +static void ivb_update_fdi_bc_bifurcation(const struct intel_crtc_state *crtc_state) { struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc); struct drm_i915_private *dev_priv = to_i915(crtc->base.dev); @@ -270,6 +270,13 @@ static void ilk_fdi_link_train(struct intel_crtc *crtc, i915_reg_t reg; u32 temp, tries; + /* + * Write the TU size bits before fdi link training, so that error + * detection works. + */ + intel_de_write(dev_priv, FDI_RX_TUSIZE1(pipe), + intel_de_read(dev_priv, PIPE_DATA_M1(pipe)) & TU_SIZE_MASK); + /* FDI needs bits from pipe first */ assert_pipe_enabled(dev_priv, crtc_state->cpu_transcoder); @@ -373,6 +380,13 @@ static void gen6_fdi_link_train(struct intel_crtc *crtc, i915_reg_t reg; u32 temp, i, retry; + /* + * Write the TU size bits before fdi link training, so that error + * detection works. + */ + intel_de_write(dev_priv, FDI_RX_TUSIZE1(pipe), + intel_de_read(dev_priv, PIPE_DATA_M1(pipe)) & TU_SIZE_MASK); + /* Train 1: umask FDI RX Interrupt symbol_lock and bit_lock bit for train result */ reg = FDI_RX_IMR(pipe); @@ -510,6 +524,15 @@ static void ivb_manual_fdi_link_train(struct intel_crtc *crtc, i915_reg_t reg; u32 temp, i, j; + ivb_update_fdi_bc_bifurcation(crtc_state); + + /* + * Write the TU size bits before fdi link training, so that error + * detection works. + */ + intel_de_write(dev_priv, FDI_RX_TUSIZE1(pipe), + intel_de_read(dev_priv, PIPE_DATA_M1(pipe)) & TU_SIZE_MASK); + /* Train 1: umask FDI RX Interrupt symbol_lock and bit_lock bit for train result */ reg = FDI_RX_IMR(pipe); diff --git a/drivers/gpu/drm/i915/display/intel_fdi.h b/drivers/gpu/drm/i915/display/intel_fdi.h index 135802e..cda9a32 100644 --- a/drivers/gpu/drm/i915/display/intel_fdi.h +++ b/drivers/gpu/drm/i915/display/intel_fdi.h @@ -16,7 +16,6 @@ int intel_fdi_link_freq(struct drm_i915_private *i915, const struct intel_crtc_state *pipe_config); int ilk_fdi_compute_config(struct intel_crtc *intel_crtc, struct intel_crtc_state *pipe_config); -void ivb_update_fdi_bc_bifurcation(const struct intel_crtc_state *crtc_state); void intel_fdi_normal_train(struct intel_crtc *crtc); void ilk_fdi_disable(struct intel_crtc *crtc); void ilk_fdi_pll_disable(struct intel_crtc *intel_crtc);