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drm/i915/hdcp: update current transcoder into intel_hdcp

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On gen12+ platforms, HDCP HW is associated to the transcoder.
Hence on every modeset update associated transcoder into the
intel_hdcp of the port.

v2:
  s/trans/cpu_transcoder [Jani]
v3:
  comment is added for fw_ddi init for gen12+ [Shashank]
  only hdcp capable transcoder is translated into fw_tc [Shashank]
v4:
  fw_tc initialization is kept for modeset. [Tomas]
  few extra doc is added at port_data init [Tomas]
v5:
  Few comments are improvised [Tomas]

Signed-off-by: Ramalingam C <ramalingam.c@intel.com>
Acked-by: Jani Nikula <jani.nikula@intel.com>
Reviewed-by: Shashank Sharma <shashank.sharma@intel.com>
Signed-off-by: Uma Shankar <uma.shankar@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190828164216.405-6-ramalingam.c@intel.com
This commit is contained in:
Ramalingam C 2019-08-28 22:12:15 +05:30 committed by Uma Shankar
parent 2d15cf1b9a
commit 39e2df090c
5 changed files with 62 additions and 1 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

7
drivers/gpu/drm/i915/display/intel_display_types.h
View file

@ -388,6 +388,13 @@ struct intel_hdcp {
wait_queue_head_t cp_irq_queue;
atomic_t cp_irq_count;
int cp_irq_count_cached;
/*
* HDCP register access for gen12+ need the transcoder associated.
* Transcoder attached to the connector could be changed at modeset.
* Hence caching the transcoder here.
*/
enum transcoder cpu_transcoder;
};
struct intel_connector {

3
drivers/gpu/drm/i915/display/intel_dp.c
View file

@ -2261,6 +2261,9 @@ intel_dp_compute_config(struct intel_encoder *encoder,
intel_psr_compute_config(intel_dp, pipe_config);
intel_hdcp_transcoder_config(intel_connector,
pipe_config->cpu_transcoder);
return 0;
}

47
drivers/gpu/drm/i915/display/intel_hdcp.c
View file

@ -1764,13 +1764,58 @@ enum mei_fw_ddi intel_get_mei_fw_ddi_index(enum port port)
}
}
static inline
enum mei_fw_tc intel_get_mei_fw_tc(enum transcoder cpu_transcoder)
{
switch (cpu_transcoder) {
case TRANSCODER_A ... TRANSCODER_D:
return (enum mei_fw_tc)(cpu_transcoder | 0x10);
default: /* eDP, DSI TRANSCODERS are non HDCP capable */
return MEI_INVALID_TRANSCODER;
}
}
void intel_hdcp_transcoder_config(struct intel_connector *connector,
enum transcoder cpu_transcoder)
{
struct drm_i915_private *dev_priv = to_i915(connector->base.dev);
struct intel_hdcp *hdcp = &connector->hdcp;
if (!hdcp->shim)
return;
if (INTEL_GEN(dev_priv) >= 12) {
mutex_lock(&hdcp->mutex);
hdcp->cpu_transcoder = cpu_transcoder;
hdcp->port_data.fw_tc = intel_get_mei_fw_tc(cpu_transcoder);
mutex_unlock(&hdcp->mutex);
}
}
static inline int initialize_hdcp_port_data(struct intel_connector *connector,
const struct intel_hdcp_shim *shim)
{
struct drm_i915_private *dev_priv = to_i915(connector->base.dev);
struct intel_hdcp *hdcp = &connector->hdcp;
struct hdcp_port_data *data = &hdcp->port_data;
data->fw_ddi = intel_get_mei_fw_ddi_index(connector->encoder->port);
if (INTEL_GEN(dev_priv) < 12)
data->fw_ddi =
intel_get_mei_fw_ddi_index(connector->encoder->port);
else
/*
* As per ME FW API expectation, for GEN 12+, fw_ddi is filled
* with zero(INVALID PORT index).
*/
data->fw_ddi = MEI_DDI_INVALID_PORT;
/*
* As associated transcoder is set and modified at modeset, here fw_tc
* is initialized to zero (invalid transcoder index). This will be
* retained for <Gen12 forever.
*/
data->fw_tc = MEI_INVALID_TRANSCODER;
data->port_type = (u8)HDCP_PORT_TYPE_INTEGRATED;
data->protocol = (u8)shim->protocol;

3
drivers/gpu/drm/i915/display/intel_hdcp.h
View file

@ -16,10 +16,13 @@ struct drm_i915_private;
struct intel_connector;
struct intel_hdcp_shim;
enum port;
enum transcoder;
void intel_hdcp_atomic_check(struct drm_connector *connector,
struct drm_connector_state *old_state,
struct drm_connector_state *new_state);
void intel_hdcp_transcoder_config(struct intel_connector *connector,
enum transcoder cpu_transcoder);
int intel_hdcp_init(struct intel_connector *connector,
const struct intel_hdcp_shim *hdcp_shim);
int intel_hdcp_enable(struct intel_connector *connector, u8 content_type);

3
drivers/gpu/drm/i915/display/intel_hdmi.c
View file

@ -2431,6 +2431,9 @@ int intel_hdmi_compute_config(struct intel_encoder *encoder,
return -EINVAL;
}
intel_hdcp_transcoder_config(intel_hdmi->attached_connector,
pipe_config->cpu_transcoder);
return 0;
}