search for: drm_dp_send_real_edid_checksum

...es changed, 37 insertions(+), 12 deletions(-) > > diff --git a/drivers/gpu/drm/drm_dp_helper.c b/drivers/gpu/drm/drm_dp_helper.c > index 4c21cf69dad5a..9703b33599c3b 100644 > --- a/drivers/gpu/drm/drm_dp_helper.c > +++ b/drivers/gpu/drm/drm_dp_helper.c > @@ -423,6 +423,38 @@ bool drm_dp_send_real_edid_checksum(struct drm_dp_aux *aux, > } > EXPORT_SYMBOL(drm_dp_send_real_edid_checksum); > > +/** > + * drm_dp_downstream_read_info() - read DPCD downstream port info if available > + * @aux: DisplayPort AUX channel > + * @dpcd: A cached copy of the port's DPCD > + * @downstream...

...r.h | 3 ++ 3 files changed, 65 insertions(+), 14 deletions(-) diff --git a/drivers/gpu/drm/drm_dp_helper.c b/drivers/gpu/drm/drm_dp_helper.c index 4c21cf69dad5a..f3643894ad951 100644 --- a/drivers/gpu/drm/drm_dp_helper.c +++ b/drivers/gpu/drm/drm_dp_helper.c @@ -423,6 +423,56 @@ bool drm_dp_send_real_edid_checksum(struct drm_dp_aux *aux, } EXPORT_SYMBOL(drm_dp_send_real_edid_checksum); +static u8 drm_dp_downstream_port_count(const u8 dpcd[DP_RECEIVER_CAP_SIZE]) +{ + u8 port_count = dpcd[DP_DOWN_STREAM_PORT_COUNT] & DP_PORT_COUNT_MASK; + + if (dpcd[DP_DOWNSTREAMPORT_PRESENT] & DP_DETAILED_CAP_INFO...

....h | 3 +++ 3 files changed, 37 insertions(+), 12 deletions(-) diff --git a/drivers/gpu/drm/drm_dp_helper.c b/drivers/gpu/drm/drm_dp_helper.c index 4c21cf69dad5a..9703b33599c3b 100644 --- a/drivers/gpu/drm/drm_dp_helper.c +++ b/drivers/gpu/drm/drm_dp_helper.c @@ -423,6 +423,38 @@ bool drm_dp_send_real_edid_checksum(struct drm_dp_aux *aux, } EXPORT_SYMBOL(drm_dp_send_real_edid_checksum); +/** + * drm_dp_downstream_read_info() - read DPCD downstream port info if available + * @aux: DisplayPort AUX channel + * @dpcd: A cached copy of the port's DPCD + * @downstream_ports: buffer to store the downstream p...

...r.h | 3 ++ 3 files changed, 51 insertions(+), 12 deletions(-) diff --git a/drivers/gpu/drm/drm_dp_helper.c b/drivers/gpu/drm/drm_dp_helper.c index 4c21cf69dad5a..4f845995f1f66 100644 --- a/drivers/gpu/drm/drm_dp_helper.c +++ b/drivers/gpu/drm/drm_dp_helper.c @@ -423,6 +423,52 @@ bool drm_dp_send_real_edid_checksum(struct drm_dp_aux *aux, } EXPORT_SYMBOL(drm_dp_send_real_edid_checksum); +static u8 drm_dp_downstream_port_count(const u8 dpcd[DP_RECEIVER_CAP_SIZE]) +{ + u8 port_count = dpcd[DP_DOWN_STREAM_PORT_COUNT] & DP_PORT_COUNT_MASK; + + if (dpcd[DP_DOWNSTREAMPORT_PRESENT] & DP_DETAILED_CAP_INFO...

...; diff --git a/drivers/gpu/drm/drm_dp_helper.c > > > b/drivers/gpu/drm/drm_dp_helper.c > > > index 4c21cf69dad5a..9703b33599c3b 100644 > > > --- a/drivers/gpu/drm/drm_dp_helper.c > > > +++ b/drivers/gpu/drm/drm_dp_helper.c > > > @@ -423,6 +423,38 @@ bool drm_dp_send_real_edid_checksum(struct drm_dp_aux > > > *aux, > > > } > > > EXPORT_SYMBOL(drm_dp_send_real_edid_checksum); > > > > > > +/** > > > + * drm_dp_downstream_read_info() - read DPCD downstream port info if > > > available > > > + * @aux: Display...

...ns(-) > > > > diff --git a/drivers/gpu/drm/drm_dp_helper.c > > b/drivers/gpu/drm/drm_dp_helper.c > > index 4c21cf69dad5a..9703b33599c3b 100644 > > --- a/drivers/gpu/drm/drm_dp_helper.c > > +++ b/drivers/gpu/drm/drm_dp_helper.c > > @@ -423,6 +423,38 @@ bool drm_dp_send_real_edid_checksum(struct drm_dp_aux > > *aux, > > } > > EXPORT_SYMBOL(drm_dp_send_real_edid_checksum); > > > > +/** > > + * drm_dp_downstream_read_info() - read DPCD downstream port info if > > available > > + * @aux: DisplayPort AUX channel > > + * @dpcd: A...

...u/drm/drm_dp_helper.c > > > > b/drivers/gpu/drm/drm_dp_helper.c > > > > index 4c21cf69dad5a..9703b33599c3b 100644 > > > > --- a/drivers/gpu/drm/drm_dp_helper.c > > > > +++ b/drivers/gpu/drm/drm_dp_helper.c > > > > @@ -423,6 +423,38 @@ bool drm_dp_send_real_edid_checksum(struct > > > > drm_dp_aux > > > > *aux, > > > > } > > > > EXPORT_SYMBOL(drm_dp_send_real_edid_checksum); > > > > > > > > +/** > > > > + * drm_dp_downstream_read_info() - read DPCD downstream port info if > &g...

...es changed, 82 insertions(+), 60 deletions(-) > > diff --git a/drivers/gpu/drm/drm_dp_helper.c b/drivers/gpu/drm/drm_dp_helper.c > index 0ff2959c8f8e8..f9445915c6c26 100644 > --- a/drivers/gpu/drm/drm_dp_helper.c > +++ b/drivers/gpu/drm/drm_dp_helper.c > @@ -423,6 +423,82 @@ bool drm_dp_send_real_edid_checksum(struct drm_dp_aux *aux, > } > EXPORT_SYMBOL(drm_dp_send_real_edid_checksum); > > +static int drm_dp_read_extended_dpcd_caps(struct drm_dp_aux *aux, > + u8 dpcd[DP_RECEIVER_CAP_SIZE]) > +{ > + u8 dpcd_ext[6]; > + int ret; > + > + /* > + * Prior to DP1.3 th...

...| 3 + 5 files changed, 82 insertions(+), 60 deletions(-) diff --git a/drivers/gpu/drm/drm_dp_helper.c b/drivers/gpu/drm/drm_dp_helper.c index 0ff2959c8f8e8..f9445915c6c26 100644 --- a/drivers/gpu/drm/drm_dp_helper.c +++ b/drivers/gpu/drm/drm_dp_helper.c @@ -423,6 +423,82 @@ bool drm_dp_send_real_edid_checksum(struct drm_dp_aux *aux, } EXPORT_SYMBOL(drm_dp_send_real_edid_checksum); +static int drm_dp_read_extended_dpcd_caps(struct drm_dp_aux *aux, + u8 dpcd[DP_RECEIVER_CAP_SIZE]) +{ + u8 dpcd_ext[6]; + int ret; + + /* + * Prior to DP1.3 the bit represented by + * DP_EXTENDED_RECEIVER_CAP_FIEL...

To start off: this patch series is less work to review then it looks - most (but not all) of the nouveau related work has already been reviewed elsewhere. Most of the reason I'm asking for an RFC here is because this code pulls a lot of code out of i915 and into shared DP helpers. Anyway-nouveau's HPD related code has been collecting dust for a while. Other then the occasional runtime PM

Most of the reason I'm asking for an RFC here is because this code pulls a lot of code out of i915 and into shared DP helpers. Anyway-nouveau's HPD related code has been collecting dust for a while. Other then the occasional runtime PM related and MST related fixes, we're missing a lot of nice things that have been added to DRM since this was originally written. Additionally, the code

To start off: this patch series is less work to review then it looks - most (but not all) of the nouveau related work has already been reviewed elsewhere. Most of the reason I'm asking for an RFC here is because this code pulls a lot of code out of i915 and into shared DP helpers. Anyway-nouveau's HPD related code has been collecting dust for a while. Other then the occasional runtime PM

Most of the reason I'm asking for an RFC here is because this code pulls a lot of code out of i915 and into shared DP helpers. Anyway-nouveau's HPD related code has been collecting dust for a while. Other then the occasional runtime PM related and MST related fixes, we're missing a lot of nice things that have been added to DRM since this was originally written. Additionally, the code