[Intel-gfx] [PATCH v6] drm/i915/edp: Allow alternate fixed mode for eDP if available.
Rodrigo Vivi
rodrigo.vivi at gmail.com
Tue Aug 15 23:46:15 UTC 2017
On Thu, Aug 10, 2017 at 10:01 AM, Vivi, Rodrigo <rodrigo.vivi at intel.com> wrote:
> On Thu, 2017-08-10 at 09:37 -0700, Jim Bride wrote:
>> On Thu, Aug 10, 2017 at 04:13:44PM +0300, Jani Nikula wrote:
>> > On Wed, 09 Aug 2017, Jim Bride <jim.bride at linux.intel.com> wrote:
>> > > Some fixed resolution panels actually support more than one mode,
>> > > with the only thing different being the refresh rate. Having this
>> > > alternate mode available to us is desirable, because it allows us to
>> > > test PSR on panels whose setup time at the preferred mode is too long.
>> > > With this patch we allow the use of the alternate mode if it's
>> > > available and it was specifically requested.
>> > >
>> > > v2 and v3: Rebase
>> > > v4: * Fix up some leaky mode stuff (Chris)
>> > > * Rebase
>> > > v5: * Fix a NULL pointer derefrence (David Weinehall)
>> > > v6: * Whitespace / spelling / checkpatch clean-up; no functional
>> > > change. (David)
>> > > * Rebase
>> > >
>> > > Cc: David Weinehall <david.weinehall at linux.intel.com>
>> > > Cc: Rodrigo Vivi <rodrigo.vivi at intel.com>
>> > > Cc: Paulo Zanoni <paulo.r.zanoni at intel.com>
>> > > Cc: Jani Nikula <jani.nikula at intel.com>
>> > > Cc: Chris Wilson <chris at chris-wilson.co.uk>
>> > > Reviewed-by: David Weinehall <david.weinehall at linux.intel.com>
>> > > Signed-off-by: Jim Bride <jim.bride at linux.intel.com>
>> > > ---
>> > > drivers/gpu/drm/i915/intel_dp.c | 38 +++++++++++++++++++++++++++++++++-----
>> > > drivers/gpu/drm/i915/intel_drv.h | 2 ++
>> > > drivers/gpu/drm/i915/intel_dsi.c | 2 +-
>> > > drivers/gpu/drm/i915/intel_dvo.c | 2 +-
>> > > drivers/gpu/drm/i915/intel_lvds.c | 3 ++-
>> > > drivers/gpu/drm/i915/intel_panel.c | 6 ++++++
>> > > 6 files changed, 45 insertions(+), 8 deletions(-)
>> > >
>> > > diff --git a/drivers/gpu/drm/i915/intel_dp.c b/drivers/gpu/drm/i915/intel_dp.c
>> > > index 76c8a0b..576b5af 100644
>> > > --- a/drivers/gpu/drm/i915/intel_dp.c
>> > > +++ b/drivers/gpu/drm/i915/intel_dp.c
>> > > @@ -1606,6 +1606,23 @@ static int intel_dp_compute_bpp(struct intel_dp *intel_dp,
>> > > return bpp;
>> > > }
>> > >
>> > > +static bool intel_edp_compare_alt_mode(struct drm_display_mode *m1,
>> > > + struct drm_display_mode *m2)
>> > > +{
>> > > + bool bres = false;
>> >
>> > What is bres?
>>
>> boolean result :)
>
> maybe something less mysterious and more meaningful would be better like
> bool mode_match;
>
>>
>> > > +
>> > > + if (m1 && m2)
>> > > + bres = (m1->hdisplay == m2->hdisplay &&
>> > > + m1->hsync_start == m2->hsync_start &&
>> > > + m1->hsync_end == m2->hsync_end &&
>> > > + m1->htotal == m2->htotal &&
>> > > + m1->vdisplay == m2->vdisplay &&
>> > > + m1->vsync_start == m2->vsync_start &&
>> > > + m1->vsync_end == m2->vsync_end &&
>> > > + m1->vtotal == m2->vtotal);
>> > > + return bres;
>> >
>> > You know you could just do
>> >
>> > return m1 && m2 && m1->hdisplay == m2->hdisplay && ...
>>
>> Yeah, but I think the above is a bit more readable, and also makes
>> it easier to add debug instrumentation at some point if needed.
>
> ... anyways I believe the direct return is easier to read than "bres"
> and also if some debug instrumentation is needed later it can be
> modified later.
>
>>
>> Jim
>>
>> > But I'm nitpicking.
>
> me too...
>
> so if this is the final version and nobody complains deeply and it is
> already reviewed I intend to merge soon... please advise otherwise...
patch merged to dinq. thanks for patches, reviews and tests.
>
>> >
>> > BR,
>> > Jani.
>> >
>> >
>> > > +}
>> > > +
>> > > bool
>> > > intel_dp_compute_config(struct intel_encoder *encoder,
>> > > struct intel_crtc_state *pipe_config,
>> > > @@ -1652,8 +1669,16 @@ intel_dp_compute_config(struct intel_encoder *encoder,
>> > > pipe_config->has_audio = intel_conn_state->force_audio == HDMI_AUDIO_ON;
>> > >
>> > > if (is_edp(intel_dp) && intel_connector->panel.fixed_mode) {
>> > > - intel_fixed_panel_mode(intel_connector->panel.fixed_mode,
>> > > - adjusted_mode);
>> > > + struct drm_display_mode *panel_mode =
>> > > + intel_connector->panel.alt_fixed_mode;
>> > > + struct drm_display_mode *req_mode = &pipe_config->base.mode;
>> > > +
>> > > + if (!intel_edp_compare_alt_mode(req_mode, panel_mode))
>> > > + panel_mode = intel_connector->panel.fixed_mode;
>> > > +
>> > > + drm_mode_debug_printmodeline(panel_mode);
>> > > +
>> > > + intel_fixed_panel_mode(panel_mode, adjusted_mode);
>> > >
>> > > if (INTEL_GEN(dev_priv) >= 9) {
>> > > int ret;
>> > > @@ -5780,6 +5805,7 @@ static bool intel_edp_init_connector(struct intel_dp *intel_dp,
>> > > struct drm_device *dev = intel_encoder->base.dev;
>> > > struct drm_i915_private *dev_priv = to_i915(dev);
>> > > struct drm_display_mode *fixed_mode = NULL;
>> > > + struct drm_display_mode *alt_fixed_mode = NULL;
>> > > struct drm_display_mode *downclock_mode = NULL;
>> > > bool has_dpcd;
>> > > struct drm_display_mode *scan;
>> > > @@ -5835,13 +5861,14 @@ static bool intel_edp_init_connector(struct intel_dp *intel_dp,
>> > > }
>> > > intel_connector->edid = edid;
>> > >
>> > > - /* prefer fixed mode from EDID if available */
>> > > + /* prefer fixed mode from EDID if available, save an alt mode also */
>> > > list_for_each_entry(scan, &connector->probed_modes, head) {
>> > > if ((scan->type & DRM_MODE_TYPE_PREFERRED)) {
>> > > fixed_mode = drm_mode_duplicate(dev, scan);
>> > > downclock_mode = intel_dp_drrs_init(
>> > > intel_connector, fixed_mode);
>> > > - break;
>> > > + } else if (!alt_fixed_mode) {
>> > > + alt_fixed_mode = drm_mode_duplicate(dev, scan);
>> > > }
>> > > }
>> > >
>> > > @@ -5878,7 +5905,8 @@ static bool intel_edp_init_connector(struct intel_dp *intel_dp,
>> > > pipe_name(pipe));
>> > > }
>> > >
>> > > - intel_panel_init(&intel_connector->panel, fixed_mode, downclock_mode);
>> > > + intel_panel_init(&intel_connector->panel, fixed_mode, alt_fixed_mode,
>> > > + downclock_mode);
>> > > intel_connector->panel.backlight.power = intel_edp_backlight_power;
>> > > intel_panel_setup_backlight(connector, pipe);
>> > >
>> > > diff --git a/drivers/gpu/drm/i915/intel_drv.h b/drivers/gpu/drm/i915/intel_drv.h
>> > > index f91de9c..b3fcbb9 100644
>> > > --- a/drivers/gpu/drm/i915/intel_drv.h
>> > > +++ b/drivers/gpu/drm/i915/intel_drv.h
>> > > @@ -265,6 +265,7 @@ struct intel_encoder {
>> > >
>> > > struct intel_panel {
>> > > struct drm_display_mode *fixed_mode;
>> > > + struct drm_display_mode *alt_fixed_mode;
>> > > struct drm_display_mode *downclock_mode;
>> > >
>> > > /* backlight */
>> > > @@ -1679,6 +1680,7 @@ void intel_overlay_reset(struct drm_i915_private *dev_priv);
>> > > /* intel_panel.c */
>> > > int intel_panel_init(struct intel_panel *panel,
>> > > struct drm_display_mode *fixed_mode,
>> > > + struct drm_display_mode *alt_fixed_mode,
>> > > struct drm_display_mode *downclock_mode);
>> > > void intel_panel_fini(struct intel_panel *panel);
>> > > void intel_fixed_panel_mode(const struct drm_display_mode *fixed_mode,
>> > > diff --git a/drivers/gpu/drm/i915/intel_dsi.c b/drivers/gpu/drm/i915/intel_dsi.c
>> > > index b0b3adf..f0c11ae 100644
>> > > --- a/drivers/gpu/drm/i915/intel_dsi.c
>> > > +++ b/drivers/gpu/drm/i915/intel_dsi.c
>> > > @@ -1849,7 +1849,7 @@ void intel_dsi_init(struct drm_i915_private *dev_priv)
>> > > connector->display_info.width_mm = fixed_mode->width_mm;
>> > > connector->display_info.height_mm = fixed_mode->height_mm;
>> > >
>> > > - intel_panel_init(&intel_connector->panel, fixed_mode, NULL);
>> > > + intel_panel_init(&intel_connector->panel, fixed_mode, NULL, NULL);
>> > > intel_panel_setup_backlight(connector, INVALID_PIPE);
>> > >
>> > > intel_dsi_add_properties(intel_connector);
>> > > diff --git a/drivers/gpu/drm/i915/intel_dvo.c b/drivers/gpu/drm/i915/intel_dvo.c
>> > > index baf369d..c0a0272 100644
>> > > --- a/drivers/gpu/drm/i915/intel_dvo.c
>> > > +++ b/drivers/gpu/drm/i915/intel_dvo.c
>> > > @@ -552,7 +552,7 @@ void intel_dvo_init(struct drm_i915_private *dev_priv)
>> > > */
>> > > intel_panel_init(&intel_connector->panel,
>> > > intel_dvo_get_current_mode(connector),
>> > > - NULL);
>> > > + NULL, NULL);
>> > > intel_dvo->panel_wants_dither = true;
>> > > }
>> > >
>> > > diff --git a/drivers/gpu/drm/i915/intel_lvds.c b/drivers/gpu/drm/i915/intel_lvds.c
>> > > index 61d5579..8e21577 100644
>> > > --- a/drivers/gpu/drm/i915/intel_lvds.c
>> > > +++ b/drivers/gpu/drm/i915/intel_lvds.c
>> > > @@ -1138,7 +1138,8 @@ void intel_lvds_init(struct drm_i915_private *dev_priv)
>> > > out:
>> > > mutex_unlock(&dev->mode_config.mutex);
>> > >
>> > > - intel_panel_init(&intel_connector->panel, fixed_mode, downclock_mode);
>> > > + intel_panel_init(&intel_connector->panel, fixed_mode, NULL,
>> > > + downclock_mode);
>> > > intel_panel_setup_backlight(connector, INVALID_PIPE);
>> > >
>> > > lvds_encoder->is_dual_link = compute_is_dual_link_lvds(lvds_encoder);
>> > > diff --git a/drivers/gpu/drm/i915/intel_panel.c b/drivers/gpu/drm/i915/intel_panel.c
>> > > index 88018fc..a17b1de 100644
>> > > --- a/drivers/gpu/drm/i915/intel_panel.c
>> > > +++ b/drivers/gpu/drm/i915/intel_panel.c
>> > > @@ -1920,11 +1920,13 @@ intel_panel_init_backlight_funcs(struct intel_panel *panel)
>> > >
>> > > int intel_panel_init(struct intel_panel *panel,
>> > > struct drm_display_mode *fixed_mode,
>> > > + struct drm_display_mode *alt_fixed_mode,
>> > > struct drm_display_mode *downclock_mode)
>> > > {
>> > > intel_panel_init_backlight_funcs(panel);
>> > >
>> > > panel->fixed_mode = fixed_mode;
>> > > + panel->alt_fixed_mode = alt_fixed_mode;
>> > > panel->downclock_mode = downclock_mode;
>> > >
>> > > return 0;
>> > > @@ -1938,6 +1940,10 @@ void intel_panel_fini(struct intel_panel *panel)
>> > > if (panel->fixed_mode)
>> > > drm_mode_destroy(intel_connector->base.dev, panel->fixed_mode);
>> > >
>> > > + if (panel->alt_fixed_mode)
>> > > + drm_mode_destroy(intel_connector->base.dev,
>> > > + panel->alt_fixed_mode);
>> > > +
>> > > if (panel->downclock_mode)
>> > > drm_mode_destroy(intel_connector->base.dev,
>> > > panel->downclock_mode);
>> >
>> > --
>> > Jani Nikula, Intel Open Source Technology Center
>
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--
Rodrigo Vivi
Blog: http://blog.vivi.eng.br
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