[Intel-gfx] [PATCH 2/8] drm/i915: move dp_m_n computation to dp_encoder->compute_config
Jesse Barnes
jbarnes at virtuousgeek.org
Tue Apr 2 22:51:29 CEST 2013
On Thu, 28 Mar 2013 10:41:57 +0100
Daniel Vetter <daniel.vetter at ffwll.ch> wrote:
> We need a flag to designate dp encoders and the dp link m_n parameters
> in the pipe config for that. And now that the pipe bpp computations
> have been moved up and stored in the pipe config, too, we can do this
> without losing our sanity.
>
> v2: Rebased on top of Takashi Iwai's fix to (again) fix the target
> clock handling for eDP. Luckily the new code is sane enough and just
> does the right thing!
>
> Signed-off-by: Daniel Vetter <daniel.vetter at ffwll.ch>
> ---
> drivers/gpu/drm/i915/intel_display.c | 30 +++++++++---------
> drivers/gpu/drm/i915/intel_dp.c | 59 ++++++------------------------------
> drivers/gpu/drm/i915/intel_drv.h | 3 --
> 3 files changed, 25 insertions(+), 67 deletions(-)
>
> diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c
> index a53a02c..dfa8919 100644
> --- a/drivers/gpu/drm/i915/intel_display.c
> +++ b/drivers/gpu/drm/i915/intel_display.c
> @@ -4182,6 +4182,14 @@ static void i9xx_update_pll_dividers(struct drm_crtc *crtc,
> }
> }
>
> +static void intel_dp_set_m_n(struct intel_crtc *crtc)
> +{
> + if (crtc->config.has_pch_encoder)
> + intel_pch_transcoder_set_m_n(crtc, &crtc->config.dp_m_n);
> + else
> + intel_cpu_transcoder_set_m_n(crtc, &crtc->config.dp_m_n);
> +}
> +
> static void vlv_update_pll(struct drm_crtc *crtc,
> intel_clock_t *clock, intel_clock_t *reduced_clock,
> int num_connectors)
> @@ -4189,9 +4197,6 @@ static void vlv_update_pll(struct drm_crtc *crtc,
> struct drm_device *dev = crtc->dev;
> struct drm_i915_private *dev_priv = dev->dev_private;
> struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
> - struct drm_display_mode *adjusted_mode =
> - &intel_crtc->config.adjusted_mode;
> - struct drm_display_mode *mode = &intel_crtc->config.requested_mode;
> int pipe = intel_crtc->pipe;
> u32 dpll, mdiv, pdiv;
> u32 bestn, bestm1, bestm2, bestp1, bestp2;
> @@ -4247,8 +4252,8 @@ static void vlv_update_pll(struct drm_crtc *crtc,
>
> intel_dpio_write(dev_priv, DPIO_FASTCLK_DISABLE, 0x620);
>
> - if (intel_pipe_has_type(crtc, INTEL_OUTPUT_DISPLAYPORT))
> - intel_dp_set_m_n(crtc, mode, adjusted_mode);
> + if (intel_crtc->config.has_dp_encoder)
> + intel_dp_set_m_n(intel_crtc);
>
> I915_WRITE(DPLL(pipe), dpll);
>
> @@ -4294,9 +4299,6 @@ static void i9xx_update_pll(struct drm_crtc *crtc,
> struct drm_device *dev = crtc->dev;
> struct drm_i915_private *dev_priv = dev->dev_private;
> struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
> - struct drm_display_mode *adjusted_mode =
> - &intel_crtc->config.adjusted_mode;
> - struct drm_display_mode *mode = &intel_crtc->config.requested_mode;
> struct intel_encoder *encoder;
> int pipe = intel_crtc->pipe;
> u32 dpll;
> @@ -4371,8 +4373,8 @@ static void i9xx_update_pll(struct drm_crtc *crtc,
> if (encoder->pre_pll_enable)
> encoder->pre_pll_enable(encoder);
>
> - if (intel_pipe_has_type(crtc, INTEL_OUTPUT_DISPLAYPORT))
> - intel_dp_set_m_n(crtc, mode, adjusted_mode);
> + if (intel_crtc->config.has_dp_encoder)
> + intel_dp_set_m_n(intel_crtc);
>
> I915_WRITE(DPLL(pipe), dpll);
>
> @@ -5588,8 +5590,8 @@ static int ironlake_crtc_mode_set(struct drm_crtc *crtc,
> } else
> intel_put_pch_pll(intel_crtc);
>
> - if (is_dp)
> - intel_dp_set_m_n(crtc, mode, adjusted_mode);
> + if (intel_crtc->config.has_dp_encoder)
> + intel_dp_set_m_n(intel_crtc);
>
> for_each_encoder_on_crtc(dev, crtc, encoder)
> if (encoder->pre_pll_enable)
> @@ -5738,8 +5740,8 @@ static int haswell_crtc_mode_set(struct drm_crtc *crtc,
> DRM_DEBUG_KMS("Mode for pipe %d:\n", pipe);
> drm_mode_debug_printmodeline(mode);
>
> - if (is_dp)
> - intel_dp_set_m_n(crtc, mode, adjusted_mode);
> + if (intel_crtc->config.has_dp_encoder)
> + intel_dp_set_m_n(intel_crtc);
>
> intel_crtc->lowfreq_avail = false;
>
> diff --git a/drivers/gpu/drm/i915/intel_dp.c b/drivers/gpu/drm/i915/intel_dp.c
> index 6b8a279..ef680d5 100644
> --- a/drivers/gpu/drm/i915/intel_dp.c
> +++ b/drivers/gpu/drm/i915/intel_dp.c
> @@ -193,6 +193,8 @@ intel_dp_mode_valid(struct drm_connector *connector,
>
> if (mode->vdisplay > fixed_mode->vdisplay)
> return MODE_PANEL;
> +
> + target_clock = fixed_mode->clock;
> }
>
> max_link_clock = drm_dp_bw_code_to_link_rate(intel_dp_max_link_bw(intel_dp));
> @@ -688,6 +690,8 @@ intel_dp_compute_config(struct intel_encoder *encoder,
> if (HAS_PCH_SPLIT(dev) && !HAS_DDI(dev) && !is_cpu_edp(intel_dp))
> pipe_config->has_pch_encoder = true;
>
> + pipe_config->has_dp_encoder = true;
> +
> if (is_edp(intel_dp) && intel_connector->panel.fixed_mode) {
> intel_fixed_panel_mode(intel_connector->panel.fixed_mode,
> adjusted_mode);
> @@ -707,7 +711,7 @@ intel_dp_compute_config(struct intel_encoder *encoder,
>
> /* Walk through all bpp values. Luckily they're all nicely spaced with 2
> * bpc in between. */
> - bpp = 8*3;
> + bpp = min_t(int, 8*3, pipe_config->pipe_bpp);
> if (is_edp(intel_dp) && dev_priv->edp.bpp)
> bpp = min_t(int, bpp, dev_priv->edp.bpp);
>
> @@ -756,56 +760,11 @@ found:
> DRM_DEBUG_KMS("DP link bw required %i available %i\n",
> mode_rate, link_avail);
>
> - return true;
> -}
> -
> -void
> -intel_dp_set_m_n(struct drm_crtc *crtc, struct drm_display_mode *mode,
> - struct drm_display_mode *adjusted_mode)
> -{
> - struct drm_device *dev = crtc->dev;
> - struct intel_encoder *intel_encoder;
> - struct intel_dp *intel_dp;
> - struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
> - int lane_count = 4;
> - struct intel_link_m_n m_n;
> - int target_clock;
> -
> - /*
> - * Find the lane count in the intel_encoder private
> - */
> - for_each_encoder_on_crtc(dev, crtc, intel_encoder) {
> - intel_dp = enc_to_intel_dp(&intel_encoder->base);
> -
> - if (intel_encoder->type == INTEL_OUTPUT_DISPLAYPORT ||
> - intel_encoder->type == INTEL_OUTPUT_EDP)
> - {
> - lane_count = intel_dp->lane_count;
> - break;
> - }
> - }
> -
> - target_clock = mode->clock;
> - for_each_encoder_on_crtc(dev, crtc, intel_encoder) {
> - if (intel_encoder->type == INTEL_OUTPUT_EDP) {
> - target_clock = intel_edp_target_clock(intel_encoder,
> - mode);
> - break;
> - }
> - }
> -
> - /*
> - * Compute the GMCH and Link ratios. The '3' here is
> - * the number of bytes_per_pixel post-LUT, which we always
> - * set up for 8-bits of R/G/B, or 3 bytes total.
> - */
> - intel_link_compute_m_n(intel_crtc->config.pipe_bpp, lane_count,
> - target_clock, adjusted_mode->clock, &m_n);
> + intel_link_compute_m_n(bpp, lane_count,
> + target_clock, adjusted_mode->clock,
> + &pipe_config->dp_m_n);
>
> - if (intel_crtc->config.has_pch_encoder)
> - intel_pch_transcoder_set_m_n(intel_crtc, &m_n);
> - else
> - intel_cpu_transcoder_set_m_n(intel_crtc, &m_n);
> + return true;
> }
>
> void intel_dp_init_link_config(struct intel_dp *intel_dp)
> diff --git a/drivers/gpu/drm/i915/intel_drv.h b/drivers/gpu/drm/i915/intel_drv.h
> index 3a9b7be..41fabcb 100644
> --- a/drivers/gpu/drm/i915/intel_drv.h
> +++ b/drivers/gpu/drm/i915/intel_drv.h
> @@ -473,9 +473,6 @@ extern void intel_dp_init(struct drm_device *dev, int output_reg,
> enum port port);
> extern void intel_dp_init_connector(struct intel_digital_port *intel_dig_port,
> struct intel_connector *intel_connector);
> -void
> -intel_dp_set_m_n(struct drm_crtc *crtc, struct drm_display_mode *mode,
> - struct drm_display_mode *adjusted_mode);
> extern void intel_dp_init_link_config(struct intel_dp *intel_dp);
> extern void intel_dp_start_link_train(struct intel_dp *intel_dp);
> extern void intel_dp_complete_link_train(struct intel_dp *intel_dp);
Looks good.
with the field from 1/8 moved to this patch:
Reviewed-by: Jesse Barnes <jbarnes at virtuousgeek.org>
--
Jesse Barnes, Intel Open Source Technology Center
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