[Intel-gfx] [PATCH 4/9] drm/i915/display: start description-based ddi initialization
Lucas De Marchi
lucas.de.marchi at gmail.com
Thu Jan 2 07:19:17 UTC 2020
On Tue, Dec 31, 2019 at 1:58 AM Jani Nikula <jani.nikula at linux.intel.com> wrote:
>
> On Mon, 23 Dec 2019, Lucas De Marchi <lucas.demarchi at intel.com> wrote:
> > For the latest platforms we can share the logic to initialize the the
> > ddi, so start moving the most trivial ones to a new setup_outputs_desc()
> > function that will be responsible for initialization according to a
> > static const table.
> >
> > Signed-off-by: Lucas De Marchi <lucas.demarchi at intel.com>
> > ---
> > drivers/gpu/drm/i915/display/intel_display.c | 96 +++++++++++++------
> > .../drm/i915/display/intel_display_types.h | 4 +
> > 2 files changed, 73 insertions(+), 27 deletions(-)
> >
> > diff --git a/drivers/gpu/drm/i915/display/intel_display.c b/drivers/gpu/drm/i915/display/intel_display.c
> > index 04819b0bd494..b3fb1e03cb0b 100644
> > --- a/drivers/gpu/drm/i915/display/intel_display.c
> > +++ b/drivers/gpu/drm/i915/display/intel_display.c
> > @@ -16221,6 +16221,72 @@ static void intel_pps_init(struct drm_i915_private *dev_priv)
> > intel_pps_unlock_regs_wa(dev_priv);
> > }
> >
> > +struct intel_output {
> > + /* Initialize DSI if present */
> > + void (*dsi_init)(struct drm_i915_private *i915);
>
> We'll need to be able to initialize DSI on multiple ports too. I've
> already drafted a series to do so, maybe I've even sent it to the
> list. Basically you'd pass the port to icl_dsi_init() too.
>
> I don't want that development to get any more complicated than it
> already is.
Right now this is just working with what is there. I don't see a problem
to update this series with the additional port argument, but let's
keep the series
independent from each other.
Lucas De Marchi
>
> BR,
> Jani.
>
>
> > + struct intel_ddi_port_info ddi_ports[];
> > +};
> > +
> > +static const struct intel_output tgl_output = {
> > + .dsi_init = icl_dsi_init,
> > + .ddi_ports = {
> > + { .port = PORT_A },
> > + { .port = PORT_B },
> > + { .port = PORT_D },
> > + { .port = PORT_E },
> > + { .port = PORT_F },
> > + { .port = PORT_G },
> > + { .port = PORT_H },
> > + { .port = PORT_I },
> > + { .port = PORT_NONE }
> > + }
> > +};
> > +
> > +static const struct intel_output ehl_output = {
> > + .dsi_init = icl_dsi_init,
> > + .ddi_ports = {
> > + { .port = PORT_A },
> > + { .port = PORT_B },
> > + { .port = PORT_C },
> > + { .port = PORT_D },
> > + { .port = PORT_NONE }
> > + }
> > +};
> > +
> > +static const struct intel_output gen9lp_output = {
> > + .dsi_init = vlv_dsi_init,
> > + .ddi_ports = {
> > + { .port = PORT_A },
> > + { .port = PORT_B },
> > + { .port = PORT_C },
> > + { .port = PORT_NONE }
> > + },
> > +};
> > +
> > +/*
> > + * Use a description-based approach for platforms that can be supported with a
> > + * static table
> > + */
> > +static void setup_ddi_outputs_desc(struct drm_i915_private *i915)
> > +{
> > + const struct intel_output *output;
> > + const struct intel_ddi_port_info *port_info;
> > +
> > + if (INTEL_GEN(i915) >= 12)
> > + output = &tgl_output;
> > + else if (IS_ELKHARTLAKE(i915))
> > + output = &ehl_output;
> > + else if (IS_GEN9_LP(i915))
> > + output = &gen9lp_output;
> > +
> > + for (port_info = output->ddi_ports;
> > + port_info->port != PORT_NONE; port_info++)
> > + intel_ddi_init(i915, port_info->port);
> > +
> > + if (output->dsi_init)
> > + output->dsi_init(i915);
> > +}
> > +
> > static void intel_setup_outputs(struct drm_i915_private *dev_priv)
> > {
> > struct intel_encoder *encoder;
> > @@ -16231,22 +16297,9 @@ static void intel_setup_outputs(struct drm_i915_private *dev_priv)
> > if (!HAS_DISPLAY(dev_priv) || !INTEL_DISPLAY_ENABLED(dev_priv))
> > return;
> >
> > - if (INTEL_GEN(dev_priv) >= 12) {
> > - intel_ddi_init(dev_priv, PORT_A);
> > - intel_ddi_init(dev_priv, PORT_B);
> > - intel_ddi_init(dev_priv, PORT_D);
> > - intel_ddi_init(dev_priv, PORT_E);
> > - intel_ddi_init(dev_priv, PORT_F);
> > - intel_ddi_init(dev_priv, PORT_G);
> > - intel_ddi_init(dev_priv, PORT_H);
> > - intel_ddi_init(dev_priv, PORT_I);
> > - icl_dsi_init(dev_priv);
> > - } else if (IS_ELKHARTLAKE(dev_priv)) {
> > - intel_ddi_init(dev_priv, PORT_A);
> > - intel_ddi_init(dev_priv, PORT_B);
> > - intel_ddi_init(dev_priv, PORT_C);
> > - intel_ddi_init(dev_priv, PORT_D);
> > - icl_dsi_init(dev_priv);
> > + if (INTEL_GEN(dev_priv) >= 12 || IS_ELKHARTLAKE(dev_priv) ||
> > + IS_GEN9_LP(dev_priv)) {
> > + setup_ddi_outputs_desc(dev_priv);
> > } else if (IS_GEN(dev_priv, 11)) {
> > intel_ddi_init(dev_priv, PORT_A);
> > intel_ddi_init(dev_priv, PORT_B);
> > @@ -16263,17 +16316,6 @@ static void intel_setup_outputs(struct drm_i915_private *dev_priv)
> > intel_ddi_init(dev_priv, PORT_F);
> >
> > icl_dsi_init(dev_priv);
> > - } else if (IS_GEN9_LP(dev_priv)) {
> > - /*
> > - * FIXME: Broxton doesn't support port detection via the
> > - * DDI_BUF_CTL_A or SFUSE_STRAP registers, find another way to
> > - * detect the ports.
> > - */
> > - intel_ddi_init(dev_priv, PORT_A);
> > - intel_ddi_init(dev_priv, PORT_B);
> > - intel_ddi_init(dev_priv, PORT_C);
> > -
> > - vlv_dsi_init(dev_priv);
> > } else if (HAS_DDI(dev_priv)) {
> > int found;
> >
> > diff --git a/drivers/gpu/drm/i915/display/intel_display_types.h b/drivers/gpu/drm/i915/display/intel_display_types.h
> > index a3a067dacf84..4d2f4ee35812 100644
> > --- a/drivers/gpu/drm/i915/display/intel_display_types.h
> > +++ b/drivers/gpu/drm/i915/display/intel_display_types.h
> > @@ -1376,6 +1376,10 @@ struct intel_dp_mst_encoder {
> > struct intel_connector *connector;
> > };
> >
> > +struct intel_ddi_port_info {
> > + enum port port;
> > +};
> > +
> > static inline enum dpio_channel
> > vlv_dig_port_to_channel(struct intel_digital_port *dig_port)
> > {
>
> --
> Jani Nikula, Intel Open Source Graphics Center
> _______________________________________________
> Intel-gfx mailing list
> Intel-gfx at lists.freedesktop.org
> https://lists.freedesktop.org/mailman/listinfo/intel-gfx
--
Lucas De Marchi
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