Re: [PATCH v2 4/9] drm/i915: Add reverse mapping between port and intel_encoder

Daniel Vetter
2015-12-04T15:02:33Z

On Fri, Dec 04, 2015 at 03:40:03PM +0100, Takashi Iwai wrote:
> On Tue, 01 Dec 2015 17:09:53 +0100,
> Takashi Iwai wrote:
> >
> > This patch adds a reverse mapping from a digital port number to
> > intel_encoder object containing the corresponding intel_digital_port.
> > It simplifies the query of the encoder a lot.
>
> While this is good for a code reduction, I guess it's better to leave
> away for now, as there will be more changes there for MST support.
> It may put yet another loop, and the mapping implemented here might
> not be the best way. So I'm going to drop this from the next
> patchset.
>
> If anyone still thinks this is worth to include, let me know. I'll
> re-add this.

Yeah I think this looks good. Fixing up conflicts with MST shouldn't be
that much trouble really.
-Daniel

>
>
> thanks,
>
> Takashi
>
> >
> > Signed-off-by: Takashi Iwai <tiwai@suse.de>
> > ---
> > drivers/gpu/drm/i915/i915_drv.h | 2 ++
> > drivers/gpu/drm/i915/intel_audio.c | 22 ++--------------------
> > drivers/gpu/drm/i915/intel_ddi.c | 1 +
> > drivers/gpu/drm/i915/intel_dp.c | 1 +
> > drivers/gpu/drm/i915/intel_hdmi.c | 2 ++
> > 5 files changed, 8 insertions(+), 20 deletions(-)
> >
> > diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h
> > index 95bb27de774f..3483d8125eac 100644
> > --- a/drivers/gpu/drm/i915/i915_drv.h
> > +++ b/drivers/gpu/drm/i915/i915_drv.h
> > @@ -1955,6 +1955,8 @@ struct drm_i915_private {
> > /* perform PHY state sanity checks? */
> > bool chv_phy_assert[2];
> >
> > + struct intel_encoder *dig_port_map[I915_MAX_PORTS];
> > +
> > /*
> > * NOTE: This is the dri1/ums dungeon, don't add stuff here. Your patch
> > * will be rejected. Instead look for a better place.
> > diff --git a/drivers/gpu/drm/i915/intel_audio.c b/drivers/gpu/drm/i915/intel_audio.c
> > index 19958bdb9bd0..67ee99f00ddd 100644
> > --- a/drivers/gpu/drm/i915/intel_audio.c
> > +++ b/drivers/gpu/drm/i915/intel_audio.c
> > @@ -630,28 +630,10 @@ static int i915_audio_component_get_cdclk_freq(struct device *dev)
> > return ret;
> > }
> >
> > -static struct intel_encoder *audio_port_to_encoder(struct drm_device *drm_dev,
> > - int port)
> > -{
> > - struct intel_encoder *intel_encoder;
> > - struct intel_digital_port *intel_dig_port;
> > -
> > - for_each_intel_encoder(drm_dev, intel_encoder) {
> > - if (intel_encoder->type != INTEL_OUTPUT_HDMI &&
> > - intel_encoder->type != INTEL_OUTPUT_DISPLAYPORT)
> > - continue;
> > - intel_dig_port = enc_to_dig_port(&intel_encoder->base);
> > - if (port == intel_dig_port->port)
> > - return intel_encoder;
> > - }
> > - return NULL;
> > -}
> > -
> > static int i915_audio_component_sync_audio_rate(struct device *dev,
> > int port, int rate)
> > {
> > struct drm_i915_private *dev_priv = dev_to_i915(dev);
> > - struct drm_device *drm_dev = dev_priv->dev;
> > struct intel_encoder *intel_encoder;
> > struct intel_crtc *crtc;
> > struct drm_display_mode *mode;
> > @@ -668,7 +650,7 @@ static int i915_audio_component_sync_audio_rate(struct device *dev,
> >
> > mutex_lock(&dev_priv->av_mutex);
> > /* 1. get the pipe */
> > - intel_encoder = audio_port_to_encoder(drm_dev, port);
> > + intel_encoder = dev_priv->dig_port_map[port];
> > if (!intel_encoder || intel_encoder->type != INTEL_OUTPUT_HDMI) {
> > DRM_DEBUG_KMS("no pipe for the port %c\n", port_name(port));
> > mutex_unlock(&dev_priv->av_mutex);
> > @@ -725,7 +707,7 @@ static int i915_audio_component_get_eld(struct device *dev, int port,
> > int ret = -EINVAL;
> >
> > drm_modeset_lock_all(drm_dev);
> > - intel_encoder = audio_port_to_encoder(drm_dev, port);
> > + intel_encoder = dev_priv->dig_port_map[port];
> > if (intel_encoder) {
> > ret = 0;
> > intel_dig_port = enc_to_dig_port(&intel_encoder->base);
> > diff --git a/drivers/gpu/drm/i915/intel_ddi.c b/drivers/gpu/drm/i915/intel_ddi.c
> > index a6752a61d99f..6770110a4075 100644
> > --- a/drivers/gpu/drm/i915/intel_ddi.c
> > +++ b/drivers/gpu/drm/i915/intel_ddi.c
> > @@ -3285,6 +3285,7 @@ void intel_ddi_init(struct drm_device *dev, enum port port)
> > intel_encoder->get_config = intel_ddi_get_config;
> >
> > intel_dig_port->port = port;
> > + dev_priv->dig_port_map[port] = intel_encoder;
> > intel_dig_port->saved_port_bits = I915_READ(DDI_BUF_CTL(port)) &
> > (DDI_BUF_PORT_REVERSAL |
> > DDI_A_4_LANES);
> > diff --git a/drivers/gpu/drm/i915/intel_dp.c b/drivers/gpu/drm/i915/intel_dp.c
> > index 09bdd94ca3ba..1c02c6466f30 100644
> > --- a/drivers/gpu/drm/i915/intel_dp.c
> > +++ b/drivers/gpu/drm/i915/intel_dp.c
> > @@ -6201,6 +6201,7 @@ intel_dp_init(struct drm_device *dev, int output_reg, enum port port)
> > }
> >
> > intel_dig_port->port = port;
> > + dev_priv->dig_port_map[port] = intel_encoder;
> > intel_dig_port->dp.output_reg = output_reg;
> >
> > intel_encoder->type = INTEL_OUTPUT_DISPLAYPORT;
> > diff --git a/drivers/gpu/drm/i915/intel_hdmi.c b/drivers/gpu/drm/i915/intel_hdmi.c
> > index 9eafa191cee2..1d9f522a6679 100644
> > --- a/drivers/gpu/drm/i915/intel_hdmi.c
> > +++ b/drivers/gpu/drm/i915/intel_hdmi.c
> > @@ -2133,6 +2133,7 @@ void intel_hdmi_init_connector(struct intel_digital_port *intel_dig_port,
> >
> > void intel_hdmi_init(struct drm_device *dev, int hdmi_reg, enum port port)
> > {
> > + struct drm_i915_private *dev_priv = dev->dev_private;
> > struct intel_digital_port *intel_dig_port;
> > struct intel_encoder *intel_encoder;
> > struct intel_connector *intel_connector;
> > @@ -2201,6 +2202,7 @@ void intel_hdmi_init(struct drm_device *dev, int hdmi_reg, enum port port)
> > intel_encoder->cloneable |= 1 << INTEL_OUTPUT_HDMI;
> >
> > intel_dig_port->port = port;
> > + dev_priv->dig_port_map[port] = intel_encoder;
> > intel_dig_port->hdmi.hdmi_reg = hdmi_reg;
> > intel_dig_port->dp.output_reg = 0;
> >
> > --
> > 2.6.3
> >
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--
Daniel Vetter
Software Engineer, Intel Corporation