[Intel-gfx] [PATCH v2 1/3] drm/i915: Add function to return port from an encoder
Pandiyan, Dhinakaran
dhinakaran.pandiyan at intel.com
Fri Aug 19 16:57:32 UTC 2016
On Thu, 2016-08-18 at 21:39 -0700, Rodrigo Vivi wrote:
> On Mon, Aug 15, 2016 at 05:00:53PM -0700, Dhinakaran Pandiyan wrote:
> > There are places in the driver where we just need the 'port' associated
> > with an encoder and not 'struct intel_digital_port' that contains it.
> > This basically is a generic implementation of intel_ddi_get_encoder_port()
> > handling both DDI and Non-DDI encoders. The handling of the analog encoder
> > is delegated to the DDI specific function.
> >
> > The idea to have a generic implementation that returned the 'enum port'
> > from 'struct intel_encoder' came from Ville.
> >
> > Signed-off-by: Dhinakaran Pandiyan <dhinakaran.pandiyan at intel.com>
> > ---
> > drivers/gpu/drm/i915/intel_ddi.c | 42 ++++++++++-------------------------
> > drivers/gpu/drm/i915/intel_display.c | 18 +++++++++++++++
> > drivers/gpu/drm/i915/intel_drv.h | 8 ++++++-
> > drivers/gpu/drm/i915/intel_opregion.c | 2 +-
> > 4 files changed, 38 insertions(+), 32 deletions(-)
> >
> > diff --git a/drivers/gpu/drm/i915/intel_ddi.c b/drivers/gpu/drm/i915/intel_ddi.c
> > index c2df4e4..13ceef4 100644
> > --- a/drivers/gpu/drm/i915/intel_ddi.c
> > +++ b/drivers/gpu/drm/i915/intel_ddi.c
> > @@ -301,24 +301,6 @@ static const struct bxt_ddi_buf_trans bxt_ddi_translations_hdmi[] = {
> > { 154, 0x9A, 1, 128, true }, /* 9: 1200 0 */
> > };
> >
> > -enum port intel_ddi_get_encoder_port(struct intel_encoder *encoder)
> > -{
> > - switch (encoder->type) {
> > - case INTEL_OUTPUT_DP_MST:
> > - return enc_to_mst(&encoder->base)->primary->port;
> > - case INTEL_OUTPUT_DP:
> > - case INTEL_OUTPUT_EDP:
> > - case INTEL_OUTPUT_HDMI:
> > - case INTEL_OUTPUT_UNKNOWN:
> > - return enc_to_dig_port(&encoder->base)->port;
> > - case INTEL_OUTPUT_ANALOG:
> > - return PORT_E;
> > - default:
> > - MISSING_CASE(encoder->type);
> > - return PORT_A;
> > - }
> > -}
> > -
> > static const struct ddi_buf_trans *
> > bdw_get_buf_trans_edp(struct drm_i915_private *dev_priv, int *n_entries)
> > {
> > @@ -421,7 +403,7 @@ void intel_prepare_dp_ddi_buffers(struct intel_encoder *encoder)
> > struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
> > u32 iboost_bit = 0;
> > int i, n_dp_entries, n_edp_entries, size;
> > - enum port port = intel_ddi_get_encoder_port(encoder);
> > + enum port port = intel_get_encoder_port(encoder);
> > const struct ddi_buf_trans *ddi_translations_fdi;
> > const struct ddi_buf_trans *ddi_translations_dp;
> > const struct ddi_buf_trans *ddi_translations_edp;
> > @@ -499,7 +481,7 @@ static void intel_prepare_hdmi_ddi_buffers(struct intel_encoder *encoder)
> > struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
> > u32 iboost_bit = 0;
> > int n_hdmi_entries, hdmi_level;
> > - enum port port = intel_ddi_get_encoder_port(encoder);
> > + enum port port = intel_get_encoder_port(encoder);
> > const struct ddi_buf_trans *ddi_translations_hdmi;
> >
> > if (IS_BROXTON(dev_priv))
> > @@ -987,7 +969,7 @@ static void bxt_ddi_clock_get(struct intel_encoder *encoder,
> > struct intel_crtc_state *pipe_config)
> > {
> > struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
> > - enum port port = intel_ddi_get_encoder_port(encoder);
> > + enum port port = intel_get_encoder_port(encoder);
> > uint32_t dpll = port;
> >
> > pipe_config->port_clock = bxt_calc_pll_link(dev_priv, dpll);
> > @@ -1130,7 +1112,7 @@ void intel_ddi_enable_transcoder_func(struct drm_crtc *crtc)
> > struct drm_i915_private *dev_priv = to_i915(dev);
> > enum pipe pipe = intel_crtc->pipe;
> > enum transcoder cpu_transcoder = intel_crtc->config->cpu_transcoder;
> > - enum port port = intel_ddi_get_encoder_port(intel_encoder);
> > + enum port port = intel_get_encoder_port(intel_encoder);
> > int type = intel_encoder->type;
> > uint32_t temp;
> >
> > @@ -1226,7 +1208,7 @@ bool intel_ddi_connector_get_hw_state(struct intel_connector *intel_connector)
> > struct drm_i915_private *dev_priv = to_i915(dev);
> > struct intel_encoder *intel_encoder = intel_connector->encoder;
> > int type = intel_connector->base.connector_type;
> > - enum port port = intel_ddi_get_encoder_port(intel_encoder);
> > + enum port port = intel_get_encoder_port(intel_encoder);
> > enum pipe pipe = 0;
> > enum transcoder cpu_transcoder;
> > enum intel_display_power_domain power_domain;
> > @@ -1286,7 +1268,7 @@ bool intel_ddi_get_hw_state(struct intel_encoder *encoder,
> > {
> > struct drm_device *dev = encoder->base.dev;
> > struct drm_i915_private *dev_priv = to_i915(dev);
> > - enum port port = intel_ddi_get_encoder_port(encoder);
> > + enum port port = intel_get_encoder_port(encoder);
> > enum intel_display_power_domain power_domain;
> > u32 tmp;
> > int i;
> > @@ -1361,7 +1343,7 @@ void intel_ddi_enable_pipe_clock(struct intel_crtc *intel_crtc)
> > struct drm_device *dev = crtc->dev;
> > struct drm_i915_private *dev_priv = to_i915(dev);
> > struct intel_encoder *intel_encoder = intel_ddi_get_crtc_encoder(crtc);
> > - enum port port = intel_ddi_get_encoder_port(intel_encoder);
> > + enum port port = intel_get_encoder_port(intel_encoder);
> > enum transcoder cpu_transcoder = intel_crtc->config->cpu_transcoder;
> >
> > if (cpu_transcoder != TRANSCODER_EDP)
> > @@ -1589,7 +1571,7 @@ void intel_ddi_clk_select(struct intel_encoder *encoder,
> > const struct intel_crtc_state *pipe_config)
> > {
> > struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
> > - enum port port = intel_ddi_get_encoder_port(encoder);
> > + enum port port = intel_get_encoder_port(encoder);
> >
> > if (IS_SKYLAKE(dev_priv) || IS_KABYLAKE(dev_priv)) {
> > uint32_t dpll = pipe_config->ddi_pll_sel;
> > @@ -1616,7 +1598,7 @@ static void intel_ddi_pre_enable(struct intel_encoder *intel_encoder)
> > struct drm_encoder *encoder = &intel_encoder->base;
> > struct drm_i915_private *dev_priv = to_i915(encoder->dev);
> > struct intel_crtc *crtc = to_intel_crtc(encoder->crtc);
> > - enum port port = intel_ddi_get_encoder_port(intel_encoder);
> > + enum port port = intel_get_encoder_port(intel_encoder);
> > int type = intel_encoder->type;
> >
> > if (type == INTEL_OUTPUT_HDMI) {
> > @@ -1668,7 +1650,7 @@ static void intel_ddi_post_disable(struct intel_encoder *intel_encoder)
> > struct drm_encoder *encoder = &intel_encoder->base;
> > struct drm_device *dev = encoder->dev;
> > struct drm_i915_private *dev_priv = to_i915(dev);
> > - enum port port = intel_ddi_get_encoder_port(intel_encoder);
> > + enum port port = intel_get_encoder_port(intel_encoder);
> > int type = intel_encoder->type;
> > uint32_t val;
> > bool wait = false;
> > @@ -1715,7 +1697,7 @@ static void intel_enable_ddi(struct intel_encoder *intel_encoder)
> > struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
> > struct drm_device *dev = encoder->dev;
> > struct drm_i915_private *dev_priv = to_i915(dev);
> > - enum port port = intel_ddi_get_encoder_port(intel_encoder);
> > + enum port port = intel_get_encoder_port(intel_encoder);
> > int type = intel_encoder->type;
> >
> > if (type == INTEL_OUTPUT_HDMI) {
> > @@ -2276,7 +2258,7 @@ static bool intel_ddi_compute_config(struct intel_encoder *encoder,
> > {
> > struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
> > int type = encoder->type;
> > - int port = intel_ddi_get_encoder_port(encoder);
> > + int port = intel_get_encoder_port(encoder);
> > int ret;
> >
> > WARN(type == INTEL_OUTPUT_UNKNOWN, "compute_config() on unknown output!\n");
> > diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c
> > index 9cbf543..44d20bd 100644
> > --- a/drivers/gpu/drm/i915/intel_display.c
> > +++ b/drivers/gpu/drm/i915/intel_display.c
> > @@ -16277,6 +16277,24 @@ err:
> > return ret;
> > }
> >
> > +enum port intel_get_encoder_port(struct intel_encoder *encoder)
> > +{
> > + switch (encoder->type) {
> > + case INTEL_OUTPUT_DP_MST:
> > + return enc_to_mst(&encoder->base)->primary->port;
> > + case INTEL_OUTPUT_DP:
> > + case INTEL_OUTPUT_EDP:
> > + case INTEL_OUTPUT_HDMI:
> > + case INTEL_OUTPUT_UNKNOWN:
> > + return enc_to_dig_port(&encoder->base)->port;
> > + case INTEL_OUTPUT_ANALOG:
> > + return intel_ddi_get_analog_port();
> > + default:
> > + MISSING_CASE(encoder->type);
> > + return PORT_A;
> > + }
> > +}
>
> I don't see the difference here. For me this patch looks more a rename and
> re-positioning than a change on the enum port x intel_digital_port as advertised.
> What am I missing?
>
>
The original implementation was to append MST handling to
enc_to_dig_port(). But, we decided not to mess with that function as we
only cared about the member intel_digital_port.port.This solution is to
re-use intel_ddi_get_encoder_port() functionality by making it generic.
> > +
> > void intel_connector_unregister(struct drm_connector *connector)
> > {
> > struct intel_connector *intel_connector = to_intel_connector(connector);
> > diff --git a/drivers/gpu/drm/i915/intel_drv.h b/drivers/gpu/drm/i915/intel_drv.h
> > index b1fc67e..19aab7b 100644
> > --- a/drivers/gpu/drm/i915/intel_drv.h
> > +++ b/drivers/gpu/drm/i915/intel_drv.h
> > @@ -1111,7 +1111,12 @@ void intel_ddi_clk_select(struct intel_encoder *encoder,
> > void intel_prepare_dp_ddi_buffers(struct intel_encoder *encoder);
> > void hsw_fdi_link_train(struct drm_crtc *crtc);
> > void intel_ddi_init(struct drm_device *dev, enum port port);
> > -enum port intel_ddi_get_encoder_port(struct intel_encoder *intel_encoder);
> > +
> > +static inline enum port intel_ddi_get_analog_port(void)
> > +{
> > + return PORT_A;
>
> PORT_E?
Thanks for spotting, I have to fix this.
>
> Anyway unless this is used in more places I think I prefer the old way.
Several functions in intel_audio.c, where we need the port from encoder,
will make use of this. We need a generic conversion function for all
encoder output types and not tied to DDI platforms.
>
> > +}
> > +
> > bool intel_ddi_get_hw_state(struct intel_encoder *encoder, enum pipe *pipe);
> > void intel_ddi_enable_transcoder_func(struct drm_crtc *crtc);
> > void intel_ddi_disable_transcoder_func(struct drm_i915_private *dev_priv,
> > @@ -1189,6 +1194,7 @@ intel_crtc_has_dp_encoder(const struct intel_crtc_state *crtc_state)
> > (1 << INTEL_OUTPUT_DP_MST) |
> > (1 << INTEL_OUTPUT_EDP));
> > }
> > +enum port intel_get_encoder_port(struct intel_encoder *encoder);
> > static inline void
> > intel_wait_for_vblank(struct drm_device *dev, int pipe)
> > {
> > diff --git a/drivers/gpu/drm/i915/intel_opregion.c b/drivers/gpu/drm/i915/intel_opregion.c
> > index adca262..9c0043e 100644
> > --- a/drivers/gpu/drm/i915/intel_opregion.c
> > +++ b/drivers/gpu/drm/i915/intel_opregion.c
> > @@ -366,7 +366,7 @@ int intel_opregion_notify_encoder(struct intel_encoder *intel_encoder,
> > if (intel_encoder->type == INTEL_OUTPUT_DSI)
> > port = 0;
> > else
> > - port = intel_ddi_get_encoder_port(intel_encoder);
> > + port = intel_get_encoder_port(intel_encoder);
> >
> > if (port == PORT_E) {
> > port = 0;
> > --
> > 2.5.0
> >
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