Re: [PATCH v2] drm/i915: Consistently use enum pipe for PCH transcoders

From: Matthias Kaehlcke
Date: Tue Jul 18 2017 - 16:49:03 EST

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Hi Daniel,

El Tue, Jul 18, 2017 at 08:39:50AM +0200 Daniel Vetter ha dit:

> On Mon, Jul 17, 2017 at 11:14:03AM -0700, Matthias Kaehlcke wrote:
> > The current code uses in some instances enum transcoder for PCH
> > transcoders and enum pipe in others. This is error prone and clang
> > raises warnings like this:
> >
> > drivers/gpu/drm/i915/intel_dp.c:3546:51: warning: implicit conversion
> > from enumeration type 'enum pipe' to different enumeration type
> > 'enum transcoder' [-Wenum-conversion]
> > intel_set_pch_fifo_underrun_reporting(dev_priv, PIPE_A, false);
> >
> > Consistently use the type enum pipe for PCH transcoders.
> >
> > Signed-off-by: Matthias Kaehlcke <mka@xxxxxxxxxxxx>
>
> Somehow git apply-mbox could parse it, but manually applying using patch
> worked. Not sure what's going on, maybe double-check it's all right.

Not sure what happened, one of the patch fragments only has one '@'
instead of two, with that fixed the patch applies.

Unfortunately the manual application missed some fragments:

drivers/gpu/drm/i915/intel_display.c:5350:51: warning: implicit
conversion from enumeration type 'enum transcoder' to different
enumeration type 'enum pipe' [-Wenum-conversion]
intel_set_pch_fifo_underrun_reporting(dev_priv, TRANSCODER_A,
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ^~~~~~~~~~~~
drivers/gpu/drm/i915/intel_display.c:5436:51: warning: implicit
conversion from enumeration type 'enum transcoder' to different
enumeration type 'enum pipe' [-Wenum-conversion]
intel_set_pch_fifo_underrun_reporting(dev_priv, TRANSCODER_A,
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ^~~~~~~~~~~~
drivers/gpu/drm/i915/intel_display.c:5534:51: warning: implicit
conversion from enumeration type 'enum transcoder' to different
enumeration type 'enum pipe' [-Wenum-conversion]
intel_set_pch_fifo_underrun_reporting(dev_priv, TRANSCODER_A,
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ^~~~~~~~~~~~
drivers/gpu/drm/i915/intel_display.c:5563:51: warning: implicit
conversion from enumeration type 'enum transcoder' to different
enumeration type 'enum pipe' [-Wenum-conversion]
intel_set_pch_fifo_underrun_reporting(dev_priv, TRANSCODER_A,

What would be the best way forward from here? Revert the manual
application and apply again, or a fixup patch?

Matthias

> > ---
> > Changes in v2:
> > - rebased on drm-intel/drm-intel-next-queued
> >
> > drivers/gpu/drm/i915/i915_irq.c | 10 +++++-----
> > drivers/gpu/drm/i915/intel_display.c | 24 ++++++++++--------------
> > drivers/gpu/drm/i915/intel_drv.h | 6 +++---
> > drivers/gpu/drm/i915/intel_fifo_underrun.c | 6 +++---
> > 4 files changed, 21 insertions(+), 25 deletions(-)
> >
> > diff --git a/drivers/gpu/drm/i915/i915_irq.c b/drivers/gpu/drm/i915/i915_irq.c
> > index 1d33cea01a1b..0b6f310101ee 100644
> > --- a/drivers/gpu/drm/i915/i915_irq.c
> > +++ b/drivers/gpu/drm/i915/i915_irq.c
> > @@ -2086,10 +2086,10 @@ static void ibx_irq_handler(struct drm_i915_private *dev_priv, u32 pch_iir)
> > DRM_DEBUG_DRIVER("PCH transcoder CRC error interrupt\n");
> >
> > if (pch_iir & SDE_TRANSA_FIFO_UNDER)
> > - intel_pch_fifo_underrun_irq_handler(dev_priv, TRANSCODER_A);
> > + intel_pch_fifo_underrun_irq_handler(dev_priv, PIPE_A);
> >
> > if (pch_iir & SDE_TRANSB_FIFO_UNDER)
> > - intel_pch_fifo_underrun_irq_handler(dev_priv, TRANSCODER_B);
> > + intel_pch_fifo_underrun_irq_handler(dev_priv, PIPE_B);
> > }
> >
> > static void ivb_err_int_handler(struct drm_i915_private *dev_priv)
> > @@ -2123,13 +2123,13 @@ static void cpt_serr_int_handler(struct drm_i915_private *dev_priv)
> > DRM_ERROR("PCH poison interrupt\n");
> >
> > if (serr_int & SERR_INT_TRANS_A_FIFO_UNDERRUN)
> > - intel_pch_fifo_underrun_irq_handler(dev_priv, TRANSCODER_A);
> > + intel_pch_fifo_underrun_irq_handler(dev_priv, PIPE_A);
> >
> > if (serr_int & SERR_INT_TRANS_B_FIFO_UNDERRUN)
> > - intel_pch_fifo_underrun_irq_handler(dev_priv, TRANSCODER_B);
> > + intel_pch_fifo_underrun_irq_handler(dev_priv, PIPE_B);
> >
> > if (serr_int & SERR_INT_TRANS_C_FIFO_UNDERRUN)
> > - intel_pch_fifo_underrun_irq_handler(dev_priv, TRANSCODER_C);
> > + intel_pch_fifo_underrun_irq_handler(dev_priv, PIPE_C);
> >
> > I915_WRITE(SERR_INT, serr_int);
> > }
> > diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c
> > index bb9c9c3c391f..5c7054c3be0e 100644
> > --- a/drivers/gpu/drm/i915/intel_display.c
> > +++ b/drivers/gpu/drm/i915/intel_display.c
> > @@ -1777,7 +1777,7 @@ static void lpt_enable_pch_transcoder(struct drm_i915_private *dev_priv,
> >
> > /* FDI must be feeding us bits for PCH ports */
> > assert_fdi_tx_enabled(dev_priv, (enum pipe) cpu_transcoder);
> > - assert_fdi_rx_enabled(dev_priv, TRANSCODER_A);
> > + assert_fdi_rx_enabled(dev_priv, PIPE_A);
> >
> > /* Workaround: set timing override bit. */
> > val = I915_READ(TRANS_CHICKEN2(PIPE_A));
> > @@ -1853,16 +1853,16 @@ void lpt_disable_pch_transcoder(struct drm_i915_private *dev_priv)
> > I915_WRITE(TRANS_CHICKEN2(PIPE_A), val);
> > }
> >
> > -enum transcoder intel_crtc_pch_transcoder(struct intel_crtc *crtc)
> > +enum pipe intel_crtc_pch_transcoder(struct intel_crtc *crtc)
> > {
> > struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
> >
> > WARN_ON(!crtc->config->has_pch_encoder);
> >
> > if (HAS_PCH_LPT(dev_priv))
> > - return TRANSCODER_A;
> > + return PIPE_A;
> > else
> > - return (enum transcoder) crtc->pipe;
> > + return crtc->pipe;
> > }
> >
> > /**
> > @@ -1901,7 +1901,7 @@ static void intel_enable_pipe(struct intel_crtc *crtc)
> > if (crtc->config->has_pch_encoder) {
> > /* if driving the PCH, we need FDI enabled */
> > assert_fdi_rx_pll_enabled(dev_priv,
> > - (enum pipe) intel_crtc_pch_transcoder(crtc));
> > + intel_crtc_pch_transcoder(crtc));
> > assert_fdi_tx_pll_enabled(dev_priv,
> > (enum pipe) cpu_transcoder);
> > }
> > @@ -4579,7 +4579,7 @@ static void lpt_pch_enable(const struct intel_crtc_state *crtc_state)
> > struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
> > enum transcoder cpu_transcoder = crtc_state->cpu_transcoder;
> >
> > - assert_pch_transcoder_disabled(dev_priv, TRANSCODER_A);
> > + assert_pch_transcoder_disabled(dev_priv, PIPE_A);
> >
> > lpt_program_iclkip(crtc);
> >
> > @ -5347,8 +5347,7 @@ static void haswell_crtc_enable(struct intel_crtc_state *pipe_config,
> > return;
> >
> > if (intel_crtc->config->has_pch_encoder)
> > - intel_set_pch_fifo_underrun_reporting(dev_priv, TRANSCODER_A,
> > - false);
> > + intel_set_pch_fifo_underrun_reporting(dev_priv, PIPE_A, false);
> >
> > intel_encoders_pre_pll_enable(crtc, pipe_config, old_state);
> >
> > @@ -5433,8 +5432,7 @@ static void haswell_crtc_enable(struct intel_crtc_state *pipe_config,
> > intel_wait_for_vblank(dev_priv, pipe);
> > intel_wait_for_vblank(dev_priv, pipe);
> > intel_set_cpu_fifo_underrun_reporting(dev_priv, pipe, true);
> > - intel_set_pch_fifo_underrun_reporting(dev_priv, TRANSCODER_A,
> > - true);
> > + intel_set_pch_fifo_underrun_reporting(dev_priv, PIPE_A, true);
> > }
> >
> > /* If we change the relative order between pipe/planes enabling, we need
> > @@ -5531,8 +5529,7 @@ static void haswell_crtc_disable(struct intel_crtc_state *old_crtc_state,
> > enum transcoder cpu_transcoder = intel_crtc->config->cpu_transcoder;
> >
> > if (intel_crtc->config->has_pch_encoder)
> > - intel_set_pch_fifo_underrun_reporting(dev_priv, TRANSCODER_A,
> > - false);
> > + intel_set_pch_fifo_underrun_reporting(dev_priv, PIPE_A, false);
> >
> > intel_encoders_disable(crtc, old_crtc_state, old_state);
> >
> > @@ -5560,8 +5557,7 @@ static void haswell_crtc_disable(struct intel_crtc_state *old_crtc_state,
> > intel_encoders_post_disable(crtc, old_crtc_state, old_state);
> >
> > if (old_crtc_state->has_pch_encoder)
> > - intel_set_pch_fifo_underrun_reporting(dev_priv, TRANSCODER_A,
> > - true);
> > + intel_set_pch_fifo_underrun_reporting(dev_priv, PIPE_A, true);
> > }
> >
> > static void i9xx_pfit_enable(struct intel_crtc *crtc)
> > diff --git a/drivers/gpu/drm/i915/intel_drv.h b/drivers/gpu/drm/i915/intel_drv.h
> > index d17a32437f07..0902d7cb48d9 100644
> > --- a/drivers/gpu/drm/i915/intel_drv.h
> > +++ b/drivers/gpu/drm/i915/intel_drv.h
> > @@ -1211,12 +1211,12 @@ hdmi_to_dig_port(struct intel_hdmi *intel_hdmi)
> > bool intel_set_cpu_fifo_underrun_reporting(struct drm_i915_private *dev_priv,
> > enum pipe pipe, bool enable);
> > bool intel_set_pch_fifo_underrun_reporting(struct drm_i915_private *dev_priv,
> > - enum transcoder pch_transcoder,
> > + enum pipe pch_transcoder,
> > bool enable);
> > void intel_cpu_fifo_underrun_irq_handler(struct drm_i915_private *dev_priv,
> > enum pipe pipe);
> > void intel_pch_fifo_underrun_irq_handler(struct drm_i915_private *dev_priv,
> > - enum transcoder pch_transcoder);
> > + enum pipe pch_transcoder);
> > void intel_check_cpu_fifo_underruns(struct drm_i915_private *dev_priv);
> > void intel_check_pch_fifo_underruns(struct drm_i915_private *dev_priv);
> >
> > @@ -1326,7 +1326,7 @@ void intel_set_cdclk(struct drm_i915_private *dev_priv,
> > /* intel_display.c */
> > void i830_enable_pipe(struct drm_i915_private *dev_priv, enum pipe pipe);
> > void i830_disable_pipe(struct drm_i915_private *dev_priv, enum pipe pipe);
> > -enum transcoder intel_crtc_pch_transcoder(struct intel_crtc *crtc);
> > +enum pipe intel_crtc_pch_transcoder(struct intel_crtc *crtc);
> > void intel_update_rawclk(struct drm_i915_private *dev_priv);
> > int vlv_get_hpll_vco(struct drm_i915_private *dev_priv);
> > int vlv_get_cck_clock(struct drm_i915_private *dev_priv,
> > diff --git a/drivers/gpu/drm/i915/intel_fifo_underrun.c b/drivers/gpu/drm/i915/intel_fifo_underrun.c
> > index d484862cc7df..5a7cca32c0fa 100644
> > --- a/drivers/gpu/drm/i915/intel_fifo_underrun.c
> > +++ b/drivers/gpu/drm/i915/intel_fifo_underrun.c
> > @@ -313,11 +313,11 @@ bool intel_set_cpu_fifo_underrun_reporting(struct drm_i915_private *dev_priv,
> > * Returns the previous state of underrun reporting.
> > */
> > bool intel_set_pch_fifo_underrun_reporting(struct drm_i915_private *dev_priv,
> > - enum transcoder pch_transcoder,
> > + enum pipe pch_transcoder,
> > bool enable)
> > {
> > struct intel_crtc *crtc =
> > - intel_get_crtc_for_pipe(dev_priv, (enum pipe) pch_transcoder);
> > + intel_get_crtc_for_pipe(dev_priv, pch_transcoder);
> > unsigned long flags;
> > bool old;
> >
> > @@ -390,7 +390,7 @@ void intel_cpu_fifo_underrun_irq_handler(struct drm_i915_private *dev_priv,
> > * interrupt to avoid an irq storm.
> > */
> > void intel_pch_fifo_underrun_irq_handler(struct drm_i915_private *dev_priv,
> > - enum transcoder pch_transcoder)
> > + enum pipe pch_transcoder)
> > {
> > if (intel_set_pch_fifo_underrun_reporting(dev_priv, pch_transcoder,
> > false)) {
>

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