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Date: Tue, 18 Jul 2017 08:39:50 +0200
From: Daniel Vetter <daniel@...ll.ch>
To: Matthias Kaehlcke <mka@...omium.org>
Cc: Daniel Vetter <daniel@...ll.ch>,
Jani Nikula <jani.nikula@...ux.intel.com>,
Daniel Vetter <daniel.vetter@...el.com>,
intel-gfx <intel-gfx@...ts.freedesktop.org>,
Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
dri-devel@...ts.freedesktop.org,
Stéphane Marchesin
<stephane.marchesin@...il.com>,
Grant Grundler <grundler@...omium.org>
Subject: Re: [PATCH v2] drm/i915: Consistently use enum pipe for PCH
transcoders
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@...omium.org>
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.
Thanks, Daniel
> ---
> 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)) {
> --
> 2.13.2.932.g7449e964c-goog
>
--
Daniel Vetter
Software Engineer, Intel Corporation
http://blog.ffwll.ch
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