[Intel-gfx] [PATCH 1/3] drm/i915: Add enum aux_ch and clean up the aux init to use it
Pandiyan, Dhinakaran
dhinakaran.pandiyan at intel.com
Thu Feb 22 07:25:22 UTC 2018
On Tue, 2018-02-20 at 11:31 -0800, Rodrigo Vivi wrote:
> On Tue, Feb 20, 2018 at 07:05:22PM +0200, Ville Syrjala wrote:
> > From: Ville Syrjälä <ville.syrjala at linux.intel.com>
> >
> > Since we no longer have a 1:1 correspondence between ports and AUX
> > channels, let's give AUX channels their own enum. Makes it easier
> > to tell the apples from the oranges, and we get rid of the
> > port E AUX power domain FIXME since we now derive the power domain
> > from the actual AUX CH.
>
>
> Beautiful clean-up. I had this in a todo list years ago and
> after staying on the bottom for so long I had removed it from there...
> >
> > v2: Rebase due to AUX F
>
> sorry and thanks! :)
>
> >
> > Signed-off-by: Ville Syrjälä <ville.syrjala at linux.intel.com>
>
> I wondered if at least aux_power_domain part could be in a
> separated patch because by the end I was a bit confused...
> But in the end I could put all pieces together and it made sense
> again. So one patch for easy back porting seems better.
>
> Reviewed-by: Rodrigo Vivi <rodrigo.vivi at intel.com>
>
> > ---
> > drivers/gpu/drm/i915/i915_reg.h | 8 +-
> > drivers/gpu/drm/i915/intel_display.h | 11 ++
> > drivers/gpu/drm/i915/intel_dp.c | 240 +++++++++++++++++------------------
> > drivers/gpu/drm/i915/intel_drv.h | 1 +
> > 4 files changed, 131 insertions(+), 129 deletions(-)
> >
> > diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h
> > index 1412abcb27d4..39d624083a17 100644
> > --- a/drivers/gpu/drm/i915/i915_reg.h
> > +++ b/drivers/gpu/drm/i915/i915_reg.h
> > @@ -5347,8 +5347,8 @@ enum {
> > #define _DPF_AUX_CH_DATA4 (dev_priv->info.display_mmio_offset + 0x64520)
> > #define _DPF_AUX_CH_DATA5 (dev_priv->info.display_mmio_offset + 0x64524)
> >
> > -#define DP_AUX_CH_CTL(port) _MMIO_PORT(port, _DPA_AUX_CH_CTL, _DPB_AUX_CH_CTL)
> > -#define DP_AUX_CH_DATA(port, i) _MMIO(_PORT(port, _DPA_AUX_CH_DATA1, _DPB_AUX_CH_DATA1) + (i) * 4) /* 5 registers */
> > +#define DP_AUX_CH_CTL(aux_ch) _MMIO_PORT(aux_ch, _DPA_AUX_CH_CTL, _DPB_AUX_CH_CTL)
> > +#define DP_AUX_CH_DATA(aux_ch, i) _MMIO(_PORT(aux_ch, _DPA_AUX_CH_DATA1, _DPB_AUX_CH_DATA1) + (i) * 4) /* 5 registers */
> >
> > #define DP_AUX_CH_CTL_SEND_BUSY (1 << 31)
> > #define DP_AUX_CH_CTL_DONE (1 << 30)
> > @@ -7875,8 +7875,8 @@ enum {
> > #define _PCH_DPD_AUX_CH_DATA4 0xe4320
> > #define _PCH_DPD_AUX_CH_DATA5 0xe4324
> >
> > -#define PCH_DP_AUX_CH_CTL(port) _MMIO_PORT((port) - PORT_B, _PCH_DPB_AUX_CH_CTL, _PCH_DPC_AUX_CH_CTL)
> > -#define PCH_DP_AUX_CH_DATA(port, i) _MMIO(_PORT((port) - PORT_B, _PCH_DPB_AUX_CH_DATA1, _PCH_DPC_AUX_CH_DATA1) + (i) * 4) /* 5 registers */
> > +#define PCH_DP_AUX_CH_CTL(aux_ch) _MMIO_PORT((aux_ch) - AUX_CH_B, _PCH_DPB_AUX_CH_CTL, _PCH_DPC_AUX_CH_CTL)
> > +#define PCH_DP_AUX_CH_DATA(aux_ch, i) _MMIO(_PORT((aux_ch) - AUX_CH_B, _PCH_DPB_AUX_CH_DATA1, _PCH_DPC_AUX_CH_DATA1) + (i) * 4) /* 5 registers */
> >
> > /* CPT */
> > #define PORT_TRANS_A_SEL_CPT 0
> > diff --git a/drivers/gpu/drm/i915/intel_display.h b/drivers/gpu/drm/i915/intel_display.h
> > index c4042e342f50..f5733a2576e7 100644
> > --- a/drivers/gpu/drm/i915/intel_display.h
> > +++ b/drivers/gpu/drm/i915/intel_display.h
> > @@ -139,6 +139,17 @@ enum dpio_phy {
> >
> > #define I915_NUM_PHYS_VLV 2
> >
> > +enum aux_ch {
> > + AUX_CH_A,
> > + AUX_CH_B,
> > + AUX_CH_C,
> > + AUX_CH_D,
> > + _AUX_CH_E, /* does not exist */
> > + AUX_CH_F,
> > +};
> > +
> > +#define aux_ch_name(a) ((a) + 'A')
> > +
> > enum intel_display_power_domain {
> > POWER_DOMAIN_PIPE_A,
> > POWER_DOMAIN_PIPE_B,
> > diff --git a/drivers/gpu/drm/i915/intel_dp.c b/drivers/gpu/drm/i915/intel_dp.c
> > index f20b25f98e5a..eeb8a026fd08 100644
> > --- a/drivers/gpu/drm/i915/intel_dp.c
> > +++ b/drivers/gpu/drm/i915/intel_dp.c
> > @@ -1331,171 +1331,194 @@ intel_dp_aux_transfer(struct drm_dp_aux *aux, struct drm_dp_aux_msg *msg)
> > return ret;
> > }
> >
> > -static enum port intel_aux_port(struct drm_i915_private *dev_priv,
> > - enum port port)
> > +static enum aux_ch intel_aux_ch(struct intel_dp *intel_dp)
> > {
> > + struct intel_encoder *encoder = &dp_to_dig_port(intel_dp)->base;
> > + struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
> > + enum port port = encoder->port;
> > const struct ddi_vbt_port_info *info =
> > &dev_priv->vbt.ddi_port_info[port];
> > - enum port aux_port;
> > + enum aux_ch aux_ch;
> >
> > if (!info->alternate_aux_channel) {
> > + aux_ch = (enum aux_ch) port;
> > +
> > DRM_DEBUG_KMS("using AUX %c for port %c (platform default)\n",
> > - port_name(port), port_name(port));
> > - return port;
> > + aux_ch_name(aux_ch), port_name(port));
> > + return aux_ch;
> > }
> >
> > switch (info->alternate_aux_channel) {
> > case DP_AUX_A:
> > - aux_port = PORT_A;
> > + aux_ch = AUX_CH_A;
> > break;
> > case DP_AUX_B:
> > - aux_port = PORT_B;
> > + aux_ch = AUX_CH_B;
> > break;
> > case DP_AUX_C:
> > - aux_port = PORT_C;
> > + aux_ch = AUX_CH_C;
> > break;
> > case DP_AUX_D:
> > - aux_port = PORT_D;
> > + aux_ch = AUX_CH_D;
> > break;
> > case DP_AUX_F:
> > - aux_port = PORT_F;
> > + aux_ch = AUX_CH_F;
> > break;
> > default:
> > MISSING_CASE(info->alternate_aux_channel);
> > - aux_port = PORT_A;
> > + aux_ch = AUX_CH_A;
> > break;
> > }
> >
> > DRM_DEBUG_KMS("using AUX %c for port %c (VBT)\n",
> > - port_name(aux_port), port_name(port));
> > + aux_ch_name(aux_ch), port_name(port));
> >
> > - return aux_port;
> > + return aux_ch;
> > +}
> > +
> > +static enum intel_display_power_domain
> > +intel_aux_power_domain(struct intel_dp *intel_dp)
> > +{
> > + switch (intel_dp->aux_ch) {
> > + case AUX_CH_A:
> > + return POWER_DOMAIN_AUX_A;
> > + case AUX_CH_B:
> > + return POWER_DOMAIN_AUX_B;
> > + case AUX_CH_C:
> > + return POWER_DOMAIN_AUX_C;
> > + case AUX_CH_D:
> > + return POWER_DOMAIN_AUX_D;
> > + case AUX_CH_F:
> > + return POWER_DOMAIN_AUX_F;
> > + default:
> > + MISSING_CASE(intel_dp->aux_ch);
> > + return POWER_DOMAIN_AUX_A;
> > + }
> > }
> >
> > static i915_reg_t g4x_aux_ctl_reg(struct drm_i915_private *dev_priv,
> > - enum port port)
> > + enum aux_ch aux_ch)
> > {
> > - switch (port) {
> > - case PORT_B:
> > - case PORT_C:
> > - case PORT_D:
> > - return DP_AUX_CH_CTL(port);
> > + switch (aux_ch) {
> > + case AUX_CH_B:
> > + case AUX_CH_C:
> > + case AUX_CH_D:
> > + return DP_AUX_CH_CTL(aux_ch);
> > default:
> > - MISSING_CASE(port);
> > - return DP_AUX_CH_CTL(PORT_B);
> > + MISSING_CASE(aux_ch);
> > + return DP_AUX_CH_CTL(AUX_CH_B);
Shouldn't intel_dp->aux_ch change too if we are switching to fallback
default registers?
Patch 3/3 assigns intel_dp->aux_ch and then assigns control and data
registers.
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