On Fri, May 18, 2018 at 03:05:01PM +0200, Neil Armstrong wrote: > This patchs adds the cec_notifier feature to the intel_hdmi part > of the i915 DRM driver. It uses the HDMI DRM connector name to differentiate > between each HDMI ports. > The changes will allow the i915 HDMI code to notify EDID and HPD changes > to an eventual CEC adapter. > > Signed-off-by: Neil Armstrong <narmstrong@xxxxxxxxxxxx> > --- > drivers/gpu/drm/i915/Kconfig | 1 + > drivers/gpu/drm/i915/intel_display.h | 20 ++++++++++++++++++++ > drivers/gpu/drm/i915/intel_drv.h | 2 ++ > drivers/gpu/drm/i915/intel_hdmi.c | 13 +++++++++++++ > 4 files changed, 36 insertions(+) > > diff --git a/drivers/gpu/drm/i915/Kconfig b/drivers/gpu/drm/i915/Kconfig > index dfd9588..2d65d56 100644 > --- a/drivers/gpu/drm/i915/Kconfig > +++ b/drivers/gpu/drm/i915/Kconfig > @@ -23,6 +23,7 @@ config DRM_I915 > select SYNC_FILE > select IOSF_MBI > select CRC32 > + select CEC_CORE if CEC_NOTIFIER > help > Choose this option if you have a system that has "Intel Graphics > Media Accelerator" or "HD Graphics" integrated graphics, > diff --git a/drivers/gpu/drm/i915/intel_display.h b/drivers/gpu/drm/i915/intel_display.h > index 4e7418b..c68d1c8 100644 > --- a/drivers/gpu/drm/i915/intel_display.h > +++ b/drivers/gpu/drm/i915/intel_display.h > @@ -126,6 +126,26 @@ enum port { > > #define port_name(p) ((p) + 'A') > > +static inline const char *port_identifier(enum port port) > +{ > + switch (port) { > + case PORT_A: > + return "Port A"; > + case PORT_B: > + return "Port B"; > + case PORT_C: > + return "Port C"; > + case PORT_D: > + return "Port D"; > + case PORT_E: > + return "Port E"; > + case PORT_F: > + return "Port F"; > + default: > + return "<invalid>"; > + } > +} I don't think we need this in the header. A static function will do. And I was actually thinking something a bit fancier like: snprintf("%s/port-%s", dev_name(dev), port_id(port)); Oh, I see you already pass the device in so I guess we don't need that in the port id? > + > enum dpio_channel { > DPIO_CH0, > DPIO_CH1 > diff --git a/drivers/gpu/drm/i915/intel_drv.h b/drivers/gpu/drm/i915/intel_drv.h > index d436858..b50e51b 100644 > --- a/drivers/gpu/drm/i915/intel_drv.h > +++ b/drivers/gpu/drm/i915/intel_drv.h > @@ -39,6 +39,7 @@ > #include <drm/drm_dp_mst_helper.h> > #include <drm/drm_rect.h> > #include <drm/drm_atomic.h> > +#include <media/cec-notifier.h> > > /** > * __wait_for - magic wait macro > @@ -1001,6 +1002,7 @@ struct intel_hdmi { > bool has_audio; > bool rgb_quant_range_selectable; > struct intel_connector *attached_connector; > + struct cec_notifier *notifier; I was wondering if we need any ifdefs around this stuff, but I guess not since it's just a pointer and all the functions seem to have empty static inlines for the CEC=n case. > }; > > struct intel_dp_mst_encoder; > diff --git a/drivers/gpu/drm/i915/intel_hdmi.c b/drivers/gpu/drm/i915/intel_hdmi.c > index 1baef4a..d522b5b 100644 > --- a/drivers/gpu/drm/i915/intel_hdmi.c > +++ b/drivers/gpu/drm/i915/intel_hdmi.c > @@ -1868,6 +1868,8 @@ intel_hdmi_set_edid(struct drm_connector *connector) > connected = true; > } > > + cec_notifier_set_phys_addr_from_edid(intel_hdmi->notifier, edid); > + > return connected; > } > > @@ -1876,6 +1878,7 @@ intel_hdmi_detect(struct drm_connector *connector, bool force) > { > enum drm_connector_status status; > struct drm_i915_private *dev_priv = to_i915(connector->dev); > + struct intel_hdmi *intel_hdmi = intel_attached_hdmi(connector); > > DRM_DEBUG_KMS("[CONNECTOR:%d:%s]\n", > connector->base.id, connector->name); > @@ -1891,6 +1894,9 @@ intel_hdmi_detect(struct drm_connector *connector, bool force) > > intel_display_power_put(dev_priv, POWER_DOMAIN_GMBUS); > > + if (status != connector_status_connected) > + cec_notifier_phys_addr_invalidate(intel_hdmi->notifier); > + > return status; > } > > @@ -2031,6 +2037,8 @@ static void chv_hdmi_pre_enable(struct intel_encoder *encoder, > > static void intel_hdmi_destroy(struct drm_connector *connector) > { > + if (intel_attached_hdmi(connector)->notifier) > + cec_notifier_put(intel_attached_hdmi(connector)->notifier); > kfree(to_intel_connector(connector)->detect_edid); > drm_connector_cleanup(connector); > kfree(connector); > @@ -2358,6 +2366,11 @@ void intel_hdmi_init_connector(struct intel_digital_port *intel_dig_port, > u32 temp = I915_READ(PEG_BAND_GAP_DATA); > I915_WRITE(PEG_BAND_GAP_DATA, (temp & ~0xf) | 0xd); > } > + > + intel_hdmi->notifier = cec_notifier_get_conn(dev->dev, > + port_identifier(port)); > + if (!intel_hdmi->notifier) > + DRM_DEBUG_KMS("CEC notifier get failed\n"); > } > > void intel_hdmi_init(struct drm_i915_private *dev_priv, > -- > 2.7.4 > > _______________________________________________ > dri-devel mailing list > dri-devel@xxxxxxxxxxxxxxxxxxxxx > https://lists.freedesktop.org/mailman/listinfo/dri-devel -- Ville Syrjälä Intel _______________________________________________ dri-devel mailing list dri-devel@xxxxxxxxxxxxxxxxxxxxx https://lists.freedesktop.org/mailman/listinfo/dri-devel