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| author | Jani Nikula <jani.nikula@intel.com> | 2021-08-25 18:47:50 +0300 |
|---|---|---|
| committer | Jani Nikula <jani.nikula@intel.com> | 2021-08-27 11:43:51 +0300 |
| commit | 12b2c3016d68b649e5d67530655c505bed7948aa (patch) | |
| tree | aa5da850c188f0681dac44016b710de009963f42 /drivers/gpu/drm/i915/display/intel_fdi.c | |
| parent | f18362cd280d1343fafc1a08df7a4ecfbad0760d (diff) | |
| download | linux-12b2c3016d68b649e5d67530655c505bed7948aa.tar.gz linux-12b2c3016d68b649e5d67530655c505bed7948aa.tar.bz2 linux-12b2c3016d68b649e5d67530655c505bed7948aa.zip | |
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 <rodrigo.vivi@intel.com>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/7984e670c6bb092d213d90f838d526d594d4a690.1629906431.git.jani.nikula@intel.com
Diffstat (limited to 'drivers/gpu/drm/i915/display/intel_fdi.c')
| -rw-r--r-- | drivers/gpu/drm/i915/display/intel_fdi.c | 25 |
1 files changed, 24 insertions, 1 deletions
diff --git a/drivers/gpu/drm/i915/display/intel_fdi.c b/drivers/gpu/drm/i915/display/intel_fdi.c index f8ffd5c032ae..f5e42985084a 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); |