[Intel-gfx] [PATCH 4/4] drm/i915: Changed the return type from 'void', so as to return an error
Akash Goel
akash.goel at intel.com
Sun May 4 11:24:45 CEST 2014
On Tue, 2014-04-29 at 16:33 +0300, Ville Syrjälä wrote:
> On Sun, Apr 20, 2014 at 04:22:48PM +0530, akash.goel at intel.com wrote:
> > From: Akash Goel <akash.goel at intel.com>
> >
> > This patch changes the return type of panel fitter configuration
> > functions from 'void', so that an error could be returned back to
> > User space, either during the modeset time or when the 'border' property
> > is being set, if the configuation is not valid.
> > This addresses the review comment from Ville, given on the previous patch.
> >
> > Signed-off-by: Akash Goel <akash.goel at intel.com>
>
> Please reorder the patches so that this patch comes before you add the
> manual panel fitting stuff. Otherwise it's hard to evaluate the error
> paths in the new code.
>
Fine, will reorder the patch sequence so that this first comes first.
Best Regards
Akash
> > ---
> > drivers/gpu/drm/i915/intel_display.c | 5 +++--
> > drivers/gpu/drm/i915/intel_dp.c | 15 +++++++++------
> > drivers/gpu/drm/i915/intel_drv.h | 6 +++---
> > drivers/gpu/drm/i915/intel_lvds.c | 11 ++++++-----
> > drivers/gpu/drm/i915/intel_panel.c | 28 ++++++++++++++++------------
> > 5 files changed, 37 insertions(+), 28 deletions(-)
> >
> > diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c
> > index 8ff99bf..d7303be 100644
> > --- a/drivers/gpu/drm/i915/intel_display.c
> > +++ b/drivers/gpu/drm/i915/intel_display.c
> > @@ -10018,9 +10018,10 @@ static int intel_set_mode(struct drm_crtc *crtc,
> > return ret;
> > }
> >
> > -void intel_crtc_restore_mode(struct drm_crtc *crtc)
> > +int intel_crtc_restore_mode(struct drm_crtc *crtc)
> > {
> > - intel_set_mode(crtc, &crtc->mode, crtc->x, crtc->y, crtc->primary->fb);
> > + return intel_set_mode(crtc, &crtc->mode, crtc->x, crtc->y,
> > + crtc->primary->fb);
> > }
> >
> > #undef for_each_intel_crtc_masked
> > diff --git a/drivers/gpu/drm/i915/intel_dp.c b/drivers/gpu/drm/i915/intel_dp.c
> > index b50b170..ad108e2 100644
> > --- a/drivers/gpu/drm/i915/intel_dp.c
> > +++ b/drivers/gpu/drm/i915/intel_dp.c
> > @@ -778,12 +778,15 @@ intel_dp_compute_config(struct intel_encoder *encoder,
> > if (is_edp(intel_dp) && intel_connector->panel.fixed_mode) {
> > intel_fixed_panel_mode(intel_connector->panel.fixed_mode,
> > adjusted_mode);
> > - if (!HAS_PCH_SPLIT(dev))
> > - intel_gmch_panel_fitting(intel_crtc, pipe_config,
> > - intel_connector->panel.fitting_mode);
> > - else
> > - intel_pch_panel_fitting(intel_crtc, pipe_config,
> > - intel_connector->panel.fitting_mode);
> > + if (!HAS_PCH_SPLIT(dev)) {
> > + if (!intel_gmch_panel_fitting(intel_crtc, pipe_config,
> > + intel_connector->panel.fitting_mode))
> > + return false;
> > + } else {
> > + if (!intel_pch_panel_fitting(intel_crtc, pipe_config,
> > + intel_connector->panel.fitting_mode))
> > + return false;
> > + }
> > }
> >
> > if (adjusted_mode->flags & DRM_MODE_FLAG_DBLCLK)
> > diff --git a/drivers/gpu/drm/i915/intel_drv.h b/drivers/gpu/drm/i915/intel_drv.h
> > index f00d075..bed4941 100644
> > --- a/drivers/gpu/drm/i915/intel_drv.h
> > +++ b/drivers/gpu/drm/i915/intel_drv.h
> > @@ -704,7 +704,7 @@ void intel_mark_busy(struct drm_device *dev);
> > void intel_mark_fb_busy(struct drm_i915_gem_object *obj,
> > struct intel_ring_buffer *ring);
> > void intel_mark_idle(struct drm_device *dev);
> > -void intel_crtc_restore_mode(struct drm_crtc *crtc);
> > +int intel_crtc_restore_mode(struct drm_crtc *crtc);
> > void intel_crtc_update_dpms(struct drm_crtc *crtc);
> > void intel_encoder_destroy(struct drm_encoder *encoder);
> > void intel_connector_dpms(struct drm_connector *, int mode);
> > @@ -888,10 +888,10 @@ int intel_panel_init(struct intel_panel *panel,
> > void intel_panel_fini(struct intel_panel *panel);
> > void intel_fixed_panel_mode(const struct drm_display_mode *fixed_mode,
> > struct drm_display_mode *adjusted_mode);
> > -void intel_pch_panel_fitting(struct intel_crtc *crtc,
> > +bool intel_pch_panel_fitting(struct intel_crtc *crtc,
> > struct intel_crtc_config *pipe_config,
> > int fitting_mode);
> > -void intel_gmch_panel_fitting(struct intel_crtc *crtc,
> > +bool intel_gmch_panel_fitting(struct intel_crtc *crtc,
> > struct intel_crtc_config *pipe_config,
> > int fitting_mode);
> > void intel_panel_set_backlight(struct intel_connector *connector, u32 level,
> > diff --git a/drivers/gpu/drm/i915/intel_lvds.c b/drivers/gpu/drm/i915/intel_lvds.c
> > index 1b1541d..e0ef79d 100644
> > --- a/drivers/gpu/drm/i915/intel_lvds.c
> > +++ b/drivers/gpu/drm/i915/intel_lvds.c
> > @@ -307,12 +307,13 @@ static bool intel_lvds_compute_config(struct intel_encoder *intel_encoder,
> > if (HAS_PCH_SPLIT(dev)) {
> > pipe_config->has_pch_encoder = true;
> >
> > - intel_pch_panel_fitting(intel_crtc, pipe_config,
> > - intel_connector->panel.fitting_mode);
> > + if (!intel_pch_panel_fitting(intel_crtc, pipe_config,
> > + intel_connector->panel.fitting_mode))
> > + return false;
> > } else {
> > - intel_gmch_panel_fitting(intel_crtc, pipe_config,
> > - intel_connector->panel.fitting_mode);
> > -
> > + if (!intel_gmch_panel_fitting(intel_crtc, pipe_config,
> > + intel_connector->panel.fitting_mode))
> > + return false;
> > }
> >
> > /*
> > diff --git a/drivers/gpu/drm/i915/intel_panel.c b/drivers/gpu/drm/i915/intel_panel.c
> > index 3dbb774..748c98c 100644
> > --- a/drivers/gpu/drm/i915/intel_panel.c
> > +++ b/drivers/gpu/drm/i915/intel_panel.c
> > @@ -57,7 +57,7 @@ intel_fixed_panel_mode(const struct drm_display_mode *fixed_mode,
> > drm_mode_set_crtcinfo(adjusted_mode, 0);
> > }
> >
> > -void
> > +bool
> > intel_pch_manual_panel_fitting(struct intel_crtc *intel_crtc,
> > struct intel_crtc_config *pipe_config)
> > {
> > @@ -89,7 +89,7 @@ intel_pch_manual_panel_fitting(struct intel_crtc *intel_crtc,
> >
> > if ((dst_width == 0) || (dst_height == 0)) {
> > DRM_ERROR("Invalid border size input\n");
> > - return;
> > + return false;
> > }
> >
> > pf_horizontal_ratio = panel_fitter_scaling(src_width, dst_width);
> > @@ -97,10 +97,10 @@ intel_pch_manual_panel_fitting(struct intel_crtc *intel_crtc,
> >
> > if (pf_horizontal_ratio > MAX_DOWNSCALE_RATIO) {
> > DRM_ERROR("width is too small\n");
> > - return;
> > + return false;
> > } else if (pf_vertical_ratio > MAX_DOWNSCALE_RATIO) {
> > DRM_ERROR("height is too small\n");
> > - return;
> > + return false;
> > }
> >
> > x = intel_crtc->border[PANEL_BORDER_LEFT];
> > @@ -109,10 +109,11 @@ intel_pch_manual_panel_fitting(struct intel_crtc *intel_crtc,
> > pipe_config->pch_pfit.pos = (x << 16) | y;
> > pipe_config->pch_pfit.size = (dst_width << 16) | dst_height;
> > pipe_config->pch_pfit.enabled = pipe_config->pch_pfit.size != 0;
> > + return true;
> > }
> >
> > /* adjusted_mode has been preset to be the panel's fixed mode */
> > -void
> > +bool
> > intel_pch_panel_fitting(struct intel_crtc *intel_crtc,
> > struct intel_crtc_config *pipe_config,
> > int fitting_mode)
> > @@ -180,13 +181,14 @@ intel_pch_panel_fitting(struct intel_crtc *intel_crtc,
> >
> > default:
> > WARN(1, "bad panel fit mode: %d\n", fitting_mode);
> > - return;
> > + return false;
> > }
> >
> > done:
> > pipe_config->pch_pfit.pos = (x << 16) | y;
> > pipe_config->pch_pfit.size = (width << 16) | height;
> > pipe_config->pch_pfit.enabled = pipe_config->pch_pfit.size != 0;
> > + return true;
> > }
> >
> > static void
> > @@ -353,7 +355,7 @@ static void i9xx_scale_aspect(struct intel_crtc_config *pipe_config,
> > }
> > }
> >
> > -void intel_gmch_manual_panel_fitting(struct intel_crtc *intel_crtc,
> > +bool intel_gmch_manual_panel_fitting(struct intel_crtc *intel_crtc,
> > struct intel_crtc_config *pipe_config)
> > {
> > struct drm_device *dev = intel_crtc->base.dev;
> > @@ -385,7 +387,7 @@ void intel_gmch_manual_panel_fitting(struct intel_crtc *intel_crtc,
> >
> > if ((dst_width == 0) || (dst_height == 0)) {
> > DRM_ERROR("Invalid border size input\n");
> > - return;
> > + return false;
> > }
> >
> > pf_horizontal_ratio = panel_fitter_scaling(src_width, dst_width);
> > @@ -393,10 +395,10 @@ void intel_gmch_manual_panel_fitting(struct intel_crtc *intel_crtc,
> >
> > if (pf_horizontal_ratio > MAX_DOWNSCALE_RATIO) {
> > DRM_ERROR("width is too small\n");
> > - return;
> > + return false;
> > } else if (pf_vertical_ratio > MAX_DOWNSCALE_RATIO) {
> > DRM_ERROR("height is too small\n");
> > - return;
> > + return false;
> > }
> >
> > if (dst_width != tot_width)
> > @@ -430,9 +432,10 @@ void intel_gmch_manual_panel_fitting(struct intel_crtc *intel_crtc,
> >
> > pipe_config->gmch_pfit.control = pfit_control;
> > pipe_config->gmch_pfit.lvds_border_bits = border;
> > + return true;
> > }
> >
> > -void intel_gmch_panel_fitting(struct intel_crtc *intel_crtc,
> > +bool intel_gmch_panel_fitting(struct intel_crtc *intel_crtc,
> > struct intel_crtc_config *pipe_config,
> > int fitting_mode)
> > {
> > @@ -490,7 +493,7 @@ void intel_gmch_panel_fitting(struct intel_crtc *intel_crtc,
> > break;
> > default:
> > WARN(1, "bad panel fit mode: %d\n", fitting_mode);
> > - return;
> > + return false;
> > }
> >
> > /* 965+ wants fuzzy fitting */
> > @@ -512,6 +515,7 @@ out:
> > pipe_config->gmch_pfit.control = pfit_control;
> > pipe_config->gmch_pfit.pgm_ratios = pfit_pgm_ratios;
> > pipe_config->gmch_pfit.lvds_border_bits = border;
> > + return true;
> > }
> >
> > static u32 intel_panel_compute_brightness(struct intel_connector *connector,
> > --
> > 1.9.2
> >
> > _______________________________________________
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> > Intel-gfx at lists.freedesktop.org
> > http://lists.freedesktop.org/mailman/listinfo/intel-gfx
>
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