[Intel-gfx] [PATCH 4/9] drm/i915/display: start description-based ddi initialization
Jani Nikula
jani.nikula at linux.intel.com
Fri Jul 3 13:22:57 UTC 2020
On Mon, 22 Jun 2020, Lucas De Marchi <lucas.de.marchi at gmail.com> wrote:
> On Wed, Jan 1, 2020 at 11:19 PM Lucas De Marchi
> <lucas.de.marchi at gmail.com> wrote:
>>
>> 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.
>
> Did you make progress on that series? Anywhere for me to look at?
> I'd like to respin this series.
Alas I didn't, but the gist of it was [1]. There were VLV/CHV DSI
related issues I didn't take into account that Ville pointed out to me.
There's been some subsequent changes since then.
Anyway, I was hoping to make faster progress, and it's not fair to hold
anyone's work back based on what could be.
BR,
Jani.
[1] https://patchwork.freedesktop.org/series/68729/
>
> Lucas De Marchi
>
>>
>> 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
--
Jani Nikula, Intel Open Source Graphics Center
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