[Intel-gfx] [PATCH 3/7] drm/i915/tgl+: Enable display DC power states on all eDP ports
Imre Deak
imre.deak at intel.com
Wed Nov 2 18:34:48 UTC 2022
On Wed, Nov 02, 2022 at 07:35:17PM +0200, Ville Syrjälä wrote:
> On Wed, Nov 02, 2022 at 07:15:26PM +0200, Imre Deak wrote:
> > Starting with TGL eDP is supported on ports B+ (besides port A), so make
> > sure DC states are not blocked on any such ports. For this add an
> > AUX_IO_<port> power domain for each port with eDP support. These domains
> > similarly to AUX_IO_A enable only the AUX_IO_<port> power well for an
> > enabled port, whereas the existing AUX_<port> domains enable both the
> > AUX_IO_<port> and the DC_OFF power wells as required by DP AUX transfers.
> >
> > Signed-off-by: Imre Deak <imre.deak at intel.com>
> > ---
> > drivers/gpu/drm/i915/display/intel_ddi.c | 8 ++-
> > .../drm/i915/display/intel_display_power.c | 30 +++++++++++
> > .../drm/i915/display/intel_display_power.h | 7 +++
> > .../i915/display/intel_display_power_map.c | 53 +++++++++++++++++--
> > 4 files changed, 91 insertions(+), 7 deletions(-)
> >
> > diff --git a/drivers/gpu/drm/i915/display/intel_ddi.c b/drivers/gpu/drm/i915/display/intel_ddi.c
> > index e95bde5cf060e..00b577a5b9a76 100644
> > --- a/drivers/gpu/drm/i915/display/intel_ddi.c
> > +++ b/drivers/gpu/drm/i915/display/intel_ddi.c
> > @@ -848,6 +848,8 @@ bool intel_ddi_get_hw_state(struct intel_encoder *encoder,
> > static enum intel_display_power_domain
> > intel_ddi_main_link_aux_domain(struct intel_digital_port *dig_port)
> > {
> > + struct drm_i915_private *i915 = to_i915(dig_port->base.base.dev);
> > +
> > /* ICL+ HW requires corresponding AUX IOs to be powered up for PSR with
> > * DC states enabled at the same time, while for driver initiated AUX
> > * transfers we need the same AUX IOs to be powered but with DC states
> > @@ -860,8 +862,10 @@ intel_ddi_main_link_aux_domain(struct intel_digital_port *dig_port)
> > * Note that PSR is enabled only on Port A even though this function
> > * returns the correct domain for other ports too.
> > */
> > - return dig_port->aux_ch == AUX_CH_A ? POWER_DOMAIN_AUX_IO_A :
> > - intel_aux_power_domain(dig_port);
> > + if (intel_dp_is_edp(&dig_port->dp))
> > + return intel_display_power_aux_io_domain(i915, dig_port->aux_ch);
> > + else
> > + return intel_aux_power_domain(dig_port);
>
> This seems to have two distinct changes in it:
> 1) define more AUX_IO domains
> 2) don't use AUX_IO for external DP and instead use the full AUX domain
By 2) you mean on port A full AUX is used for external DP, then yes.
> So seems like this needs to be split.
Ok, can add a patch with only a
if (is_edp(port) && port == A)
return AUX_IO_A;
else
return AUX_A;
change followed by this one, if that's what you meant.
> Also why do we need 2)?
The DC5/6 states only make sense with PSR enabled. Even though we enable
these atm for external outputs enabled on port A as well (for instance
DG2), the firmware will not actually enter the DC power states in this
case. Since for TypeC ports the AUX domain/power well also depends on
the TBT vs. non-TBT mode, the easiest way to select between the AUX_IO
vs. AUX domain was eDP vs. non-eDP (see also below).
>
> > }
> >
> > static void intel_ddi_get_power_domains(struct intel_encoder *encoder,
> > diff --git a/drivers/gpu/drm/i915/display/intel_display_power.c b/drivers/gpu/drm/i915/display/intel_display_power.c
> > index da0047359446e..ca453518e7fd7 100644
> > --- a/drivers/gpu/drm/i915/display/intel_display_power.c
> > +++ b/drivers/gpu/drm/i915/display/intel_display_power.c
> > @@ -131,6 +131,16 @@ intel_display_power_domain_str(enum intel_display_power_domain domain)
> > return "AUDIO_PLAYBACK";
> > case POWER_DOMAIN_AUX_IO_A:
> > return "AUX_IO_A";
> > + case POWER_DOMAIN_AUX_IO_B:
> > + return "AUX_IO_B";
> > + case POWER_DOMAIN_AUX_IO_C:
> > + return "AUX_IO_C";
> > + case POWER_DOMAIN_AUX_IO_D:
> > + return "AUX_IO_D";
> > + case POWER_DOMAIN_AUX_IO_E:
> > + return "AUX_IO_E";
> > + case POWER_DOMAIN_AUX_IO_F:
> > + return "AUX_IO_F";
> > case POWER_DOMAIN_AUX_A:
> > return "AUX_A";
> > case POWER_DOMAIN_AUX_B:
> > @@ -2332,6 +2342,7 @@ struct intel_ddi_port_domains {
> >
> > enum intel_display_power_domain ddi_lanes;
> > enum intel_display_power_domain ddi_io;
> > + enum intel_display_power_domain aux_io;
> > enum intel_display_power_domain aux_legacy_usbc;
> > enum intel_display_power_domain aux_tbt;
> > };
> > @@ -2346,6 +2357,7 @@ i9xx_port_domains[] = {
> >
> > .ddi_lanes = POWER_DOMAIN_PORT_DDI_LANES_A,
> > .ddi_io = POWER_DOMAIN_PORT_DDI_IO_A,
> > + .aux_io = POWER_DOMAIN_AUX_IO_A,
> > .aux_legacy_usbc = POWER_DOMAIN_AUX_A,
> > .aux_tbt = POWER_DOMAIN_INVALID,
> > },
> > @@ -2361,6 +2373,7 @@ d11_port_domains[] = {
> >
> > .ddi_lanes = POWER_DOMAIN_PORT_DDI_LANES_A,
> > .ddi_io = POWER_DOMAIN_PORT_DDI_IO_A,
> > + .aux_io = POWER_DOMAIN_AUX_IO_A,
> > .aux_legacy_usbc = POWER_DOMAIN_AUX_A,
> > .aux_tbt = POWER_DOMAIN_INVALID,
> > }, {
> > @@ -2371,6 +2384,7 @@ d11_port_domains[] = {
> >
> > .ddi_lanes = POWER_DOMAIN_PORT_DDI_LANES_C,
> > .ddi_io = POWER_DOMAIN_PORT_DDI_IO_C,
> > + .aux_io = POWER_DOMAIN_AUX_IO_C,
> > .aux_legacy_usbc = POWER_DOMAIN_AUX_C,
> > .aux_tbt = POWER_DOMAIN_AUX_TBT1,
> > },
> > @@ -2386,6 +2400,7 @@ d12_port_domains[] = {
> >
> > .ddi_lanes = POWER_DOMAIN_PORT_DDI_LANES_A,
> > .ddi_io = POWER_DOMAIN_PORT_DDI_IO_A,
> > + .aux_io = POWER_DOMAIN_AUX_IO_A,
> > .aux_legacy_usbc = POWER_DOMAIN_AUX_A,
> > .aux_tbt = POWER_DOMAIN_INVALID,
> > }, {
> > @@ -2396,6 +2411,7 @@ d12_port_domains[] = {
> >
> > .ddi_lanes = POWER_DOMAIN_PORT_DDI_LANES_TC1,
> > .ddi_io = POWER_DOMAIN_PORT_DDI_IO_TC1,
> > + .aux_io = POWER_DOMAIN_INVALID,
> > .aux_legacy_usbc = POWER_DOMAIN_AUX_USBC1,
> > .aux_tbt = POWER_DOMAIN_AUX_TBT1,
> > },
> > @@ -2411,6 +2427,7 @@ d13_port_domains[] = {
> >
> > .ddi_lanes = POWER_DOMAIN_PORT_DDI_LANES_A,
> > .ddi_io = POWER_DOMAIN_PORT_DDI_IO_A,
> > + .aux_io = POWER_DOMAIN_AUX_IO_A,
> > .aux_legacy_usbc = POWER_DOMAIN_AUX_A,
> > .aux_tbt = POWER_DOMAIN_INVALID,
> > }, {
> > @@ -2421,6 +2438,7 @@ d13_port_domains[] = {
> >
> > .ddi_lanes = POWER_DOMAIN_PORT_DDI_LANES_TC1,
> > .ddi_io = POWER_DOMAIN_PORT_DDI_IO_TC1,
> > + .aux_io = POWER_DOMAIN_INVALID,
> > .aux_legacy_usbc = POWER_DOMAIN_AUX_USBC1,
> > .aux_tbt = POWER_DOMAIN_AUX_TBT1,
> > }, {
> > @@ -2431,6 +2449,7 @@ d13_port_domains[] = {
> >
> > .ddi_lanes = POWER_DOMAIN_PORT_DDI_LANES_D,
> > .ddi_io = POWER_DOMAIN_PORT_DDI_IO_D,
> > + .aux_io = POWER_DOMAIN_AUX_IO_D,
> > .aux_legacy_usbc = POWER_DOMAIN_AUX_D,
> > .aux_tbt = POWER_DOMAIN_INVALID,
> > },
> > @@ -2508,6 +2527,17 @@ intel_port_domains_for_aux_ch(struct drm_i915_private *i915, enum aux_ch aux_ch)
> > return NULL;
> > }
> >
> > +enum intel_display_power_domain
> > +intel_display_power_aux_io_domain(struct drm_i915_private *i915, enum aux_ch aux_ch)
> > +{
> > + const struct intel_ddi_port_domains *domains = intel_port_domains_for_aux_ch(i915, aux_ch);
> > +
> > + if (drm_WARN_ON(&i915->drm, !domains) || domains->aux_io == POWER_DOMAIN_INVALID)
> > + return POWER_DOMAIN_AUX_IO_A;
>
> The POWER_DOMAIN_INVALID things is for TC ports I guess?
Yes.
> Shouldn't this return the full AUX domain for the specific port for those?
At this level it's not well-defined, as that depends on the TBT vs.
non-TBT mode as well and as you point out they shouldn't be used.
> Not that you should ever have eDP on them I suppose, so given
> what you had in that earlier function I guess this should never
> happen.
Right.
I guess we could assume that the AUX_IO domain will be not required in
TBT mode (vs. the full AUX domain) and also define/return from here new
AUX_IO_USBC[1-6] domains which wouldn't explicitly disable DC states.
Right now only non-TC ports support eDP, so these domains wouldn't be
used, hence I opted for not defining them.
> > +
> > + return domains->aux_io + (int)(aux_ch - domains->aux_ch_start);
> > +}
> > +
> > enum intel_display_power_domain
> > intel_display_power_legacy_aux_domain(struct drm_i915_private *i915, enum aux_ch aux_ch)
> > {
> > diff --git a/drivers/gpu/drm/i915/display/intel_display_power.h b/drivers/gpu/drm/i915/display/intel_display_power.h
> > index fd68d43bfe322..54737e0aec21e 100644
> > --- a/drivers/gpu/drm/i915/display/intel_display_power.h
> > +++ b/drivers/gpu/drm/i915/display/intel_display_power.h
> > @@ -78,6 +78,11 @@ enum intel_display_power_domain {
> > POWER_DOMAIN_AUDIO_PLAYBACK,
> >
> > POWER_DOMAIN_AUX_IO_A,
> > + POWER_DOMAIN_AUX_IO_B,
> > + POWER_DOMAIN_AUX_IO_C,
> > + POWER_DOMAIN_AUX_IO_D,
> > + POWER_DOMAIN_AUX_IO_E,
> > + POWER_DOMAIN_AUX_IO_F,
> >
> > POWER_DOMAIN_AUX_A,
> > POWER_DOMAIN_AUX_B,
> > @@ -250,6 +255,8 @@ intel_display_power_ddi_lanes_domain(struct drm_i915_private *i915, enum port po
> > enum intel_display_power_domain
> > intel_display_power_ddi_io_domain(struct drm_i915_private *i915, enum port port);
> > enum intel_display_power_domain
> > +intel_display_power_aux_io_domain(struct drm_i915_private *i915, enum aux_ch aux_ch);
> > +enum intel_display_power_domain
> > intel_display_power_legacy_aux_domain(struct drm_i915_private *i915, enum aux_ch aux_ch);
> > enum intel_display_power_domain
> > intel_display_power_tbt_aux_domain(struct drm_i915_private *i915, enum aux_ch aux_ch);
> > diff --git a/drivers/gpu/drm/i915/display/intel_display_power_map.c b/drivers/gpu/drm/i915/display/intel_display_power_map.c
> > index 43454022e6a66..b82c0d0a80c5f 100644
> > --- a/drivers/gpu/drm/i915/display/intel_display_power_map.c
> > +++ b/drivers/gpu/drm/i915/display/intel_display_power_map.c
> > @@ -170,6 +170,8 @@ I915_DECL_PW_DOMAINS(vlv_pwdoms_display,
> > POWER_DOMAIN_VGA,
> > POWER_DOMAIN_AUDIO_MMIO,
> > POWER_DOMAIN_AUDIO_PLAYBACK,
> > + POWER_DOMAIN_AUX_IO_B,
> > + POWER_DOMAIN_AUX_IO_C,
> > POWER_DOMAIN_AUX_B,
> > POWER_DOMAIN_AUX_C,
> > POWER_DOMAIN_GMBUS,
> > @@ -179,6 +181,8 @@ I915_DECL_PW_DOMAINS(vlv_pwdoms_dpio_cmn_bc,
> > POWER_DOMAIN_PORT_DDI_LANES_B,
> > POWER_DOMAIN_PORT_DDI_LANES_C,
> > POWER_DOMAIN_PORT_CRT,
> > + POWER_DOMAIN_AUX_IO_B,
> > + POWER_DOMAIN_AUX_IO_C,
> > POWER_DOMAIN_AUX_B,
> > POWER_DOMAIN_AUX_C,
> > POWER_DOMAIN_INIT);
> > @@ -186,6 +190,8 @@ I915_DECL_PW_DOMAINS(vlv_pwdoms_dpio_cmn_bc,
> > I915_DECL_PW_DOMAINS(vlv_pwdoms_dpio_tx_bc_lanes,
> > POWER_DOMAIN_PORT_DDI_LANES_B,
> > POWER_DOMAIN_PORT_DDI_LANES_C,
> > + POWER_DOMAIN_AUX_IO_B,
> > + POWER_DOMAIN_AUX_IO_C,
> > POWER_DOMAIN_AUX_B,
> > POWER_DOMAIN_AUX_C,
> > POWER_DOMAIN_INIT);
> > @@ -243,6 +249,9 @@ I915_DECL_PW_DOMAINS(chv_pwdoms_display,
> > POWER_DOMAIN_VGA,
> > POWER_DOMAIN_AUDIO_MMIO,
> > POWER_DOMAIN_AUDIO_PLAYBACK,
> > + POWER_DOMAIN_AUX_IO_B,
> > + POWER_DOMAIN_AUX_IO_C,
> > + POWER_DOMAIN_AUX_IO_D,
> > POWER_DOMAIN_AUX_B,
> > POWER_DOMAIN_AUX_C,
> > POWER_DOMAIN_AUX_D,
> > @@ -252,12 +261,15 @@ I915_DECL_PW_DOMAINS(chv_pwdoms_display,
> > I915_DECL_PW_DOMAINS(chv_pwdoms_dpio_cmn_bc,
> > POWER_DOMAIN_PORT_DDI_LANES_B,
> > POWER_DOMAIN_PORT_DDI_LANES_C,
> > + POWER_DOMAIN_AUX_IO_B,
> > + POWER_DOMAIN_AUX_IO_C,
> > POWER_DOMAIN_AUX_B,
> > POWER_DOMAIN_AUX_C,
> > POWER_DOMAIN_INIT);
> >
> > I915_DECL_PW_DOMAINS(chv_pwdoms_dpio_cmn_d,
> > POWER_DOMAIN_PORT_DDI_LANES_D,
> > + POWER_DOMAIN_AUX_IO_D,
> > POWER_DOMAIN_AUX_D,
> > POWER_DOMAIN_INIT);
> >
> > @@ -305,6 +317,9 @@ static const struct i915_power_well_desc_list chv_power_wells[] = {
> > POWER_DOMAIN_VGA, \
> > POWER_DOMAIN_AUDIO_MMIO, \
> > POWER_DOMAIN_AUDIO_PLAYBACK, \
> > + POWER_DOMAIN_AUX_IO_B, \
> > + POWER_DOMAIN_AUX_IO_C, \
> > + POWER_DOMAIN_AUX_IO_D, \
> > POWER_DOMAIN_AUX_B, \
> > POWER_DOMAIN_AUX_C, \
> > POWER_DOMAIN_AUX_D
> > @@ -407,6 +422,8 @@ static const struct i915_power_well_desc_list skl_power_wells[] = {
> > POWER_DOMAIN_VGA, \
> > POWER_DOMAIN_AUDIO_MMIO, \
> > POWER_DOMAIN_AUDIO_PLAYBACK, \
> > + POWER_DOMAIN_AUX_IO_B, \
> > + POWER_DOMAIN_AUX_IO_C, \
> > POWER_DOMAIN_AUX_B, \
> > POWER_DOMAIN_AUX_C
> >
> > @@ -430,6 +447,8 @@ I915_DECL_PW_DOMAINS(bxt_pwdoms_dpio_cmn_a,
> > I915_DECL_PW_DOMAINS(bxt_pwdoms_dpio_cmn_bc,
> > POWER_DOMAIN_PORT_DDI_LANES_B,
> > POWER_DOMAIN_PORT_DDI_LANES_C,
> > + POWER_DOMAIN_AUX_IO_B,
> > + POWER_DOMAIN_AUX_IO_C,
> > POWER_DOMAIN_AUX_B,
> > POWER_DOMAIN_AUX_C,
> > POWER_DOMAIN_INIT);
> > @@ -483,6 +502,8 @@ static const struct i915_power_well_desc_list bxt_power_wells[] = {
> > POWER_DOMAIN_VGA, \
> > POWER_DOMAIN_AUDIO_MMIO, \
> > POWER_DOMAIN_AUDIO_PLAYBACK, \
> > + POWER_DOMAIN_AUX_IO_B, \
> > + POWER_DOMAIN_AUX_IO_C, \
> > POWER_DOMAIN_AUX_B, \
> > POWER_DOMAIN_AUX_C
> >
> > @@ -509,11 +530,13 @@ I915_DECL_PW_DOMAINS(glk_pwdoms_dpio_cmn_a,
> >
> > I915_DECL_PW_DOMAINS(glk_pwdoms_dpio_cmn_b,
> > POWER_DOMAIN_PORT_DDI_LANES_B,
> > + POWER_DOMAIN_AUX_IO_B,
> > POWER_DOMAIN_AUX_B,
> > POWER_DOMAIN_INIT);
> >
> > I915_DECL_PW_DOMAINS(glk_pwdoms_dpio_cmn_c,
> > POWER_DOMAIN_PORT_DDI_LANES_C,
> > + POWER_DOMAIN_AUX_IO_C,
> > POWER_DOMAIN_AUX_C,
> > POWER_DOMAIN_INIT);
> >
> > @@ -523,10 +546,12 @@ I915_DECL_PW_DOMAINS(glk_pwdoms_aux_a,
> > POWER_DOMAIN_INIT);
> >
> > I915_DECL_PW_DOMAINS(glk_pwdoms_aux_b,
> > + POWER_DOMAIN_AUX_IO_B,
> > POWER_DOMAIN_AUX_B,
> > POWER_DOMAIN_INIT);
> >
> > I915_DECL_PW_DOMAINS(glk_pwdoms_aux_c,
> > + POWER_DOMAIN_AUX_IO_C,
> > POWER_DOMAIN_AUX_C,
> > POWER_DOMAIN_INIT);
> >
> > @@ -617,6 +642,11 @@ I915_DECL_PW_DOMAINS(icl_pwdoms_pw_4,
> > POWER_DOMAIN_VGA, \
> > POWER_DOMAIN_AUDIO_MMIO, \
> > POWER_DOMAIN_AUDIO_PLAYBACK, \
> > + POWER_DOMAIN_AUX_IO_B, \
> > + POWER_DOMAIN_AUX_IO_C, \
> > + POWER_DOMAIN_AUX_IO_D, \
> > + POWER_DOMAIN_AUX_IO_E, \
> > + POWER_DOMAIN_AUX_IO_F, \
> > POWER_DOMAIN_AUX_B, \
> > POWER_DOMAIN_AUX_C, \
> > POWER_DOMAIN_AUX_D, \
> > @@ -660,11 +690,21 @@ I915_DECL_PW_DOMAINS(icl_pwdoms_ddi_io_f, POWER_DOMAIN_PORT_DDI_IO_F);
> > I915_DECL_PW_DOMAINS(icl_pwdoms_aux_a,
> > POWER_DOMAIN_AUX_IO_A,
> > POWER_DOMAIN_AUX_A);
> > -I915_DECL_PW_DOMAINS(icl_pwdoms_aux_b, POWER_DOMAIN_AUX_B);
> > -I915_DECL_PW_DOMAINS(icl_pwdoms_aux_c, POWER_DOMAIN_AUX_C);
> > -I915_DECL_PW_DOMAINS(icl_pwdoms_aux_d, POWER_DOMAIN_AUX_D);
> > -I915_DECL_PW_DOMAINS(icl_pwdoms_aux_e, POWER_DOMAIN_AUX_E);
> > -I915_DECL_PW_DOMAINS(icl_pwdoms_aux_f, POWER_DOMAIN_AUX_F);
> > +I915_DECL_PW_DOMAINS(icl_pwdoms_aux_b,
> > + POWER_DOMAIN_AUX_IO_B,
> > + POWER_DOMAIN_AUX_B);
> > +I915_DECL_PW_DOMAINS(icl_pwdoms_aux_c,
> > + POWER_DOMAIN_AUX_IO_C,
> > + POWER_DOMAIN_AUX_C);
> > +I915_DECL_PW_DOMAINS(icl_pwdoms_aux_d,
> > + POWER_DOMAIN_AUX_IO_D,
> > + POWER_DOMAIN_AUX_D);
> > +I915_DECL_PW_DOMAINS(icl_pwdoms_aux_e,
> > + POWER_DOMAIN_AUX_IO_E,
> > + POWER_DOMAIN_AUX_E);
> > +I915_DECL_PW_DOMAINS(icl_pwdoms_aux_f,
> > + POWER_DOMAIN_AUX_IO_F,
> > + POWER_DOMAIN_AUX_F);
> > I915_DECL_PW_DOMAINS(icl_pwdoms_aux_tbt1, POWER_DOMAIN_AUX_TBT1);
> > I915_DECL_PW_DOMAINS(icl_pwdoms_aux_tbt2, POWER_DOMAIN_AUX_TBT2);
> > I915_DECL_PW_DOMAINS(icl_pwdoms_aux_tbt3, POWER_DOMAIN_AUX_TBT3);
> > @@ -1215,6 +1255,9 @@ I915_DECL_PW_DOMAINS(xelpd_pwdoms_pw_a,
> > POWER_DOMAIN_PORT_DDI_LANES_TC4, \
> > POWER_DOMAIN_VGA, \
> > POWER_DOMAIN_AUDIO_PLAYBACK, \
> > + POWER_DOMAIN_AUX_IO_C, \
> > + POWER_DOMAIN_AUX_IO_D, \
> > + POWER_DOMAIN_AUX_IO_E, \
> > POWER_DOMAIN_AUX_C, \
> > POWER_DOMAIN_AUX_D, \
> > POWER_DOMAIN_AUX_E, \
> > --
> > 2.37.1
>
> --
> Ville Syrjälä
> Intel
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