[Intel-gfx] [PATCH v2 05/12] drm/i915: Use the cpu_transcoder in intel_hdcp to toggle HDCP signalling
Ramalingam C
ramalingam.c at intel.com
Fri Dec 13 10:43:53 UTC 2019
On 2019-12-12 at 14:02:23 -0500, Sean Paul wrote:
> From: Sean Paul <seanpaul at chromium.org>
>
> Instead of using intel_dig_port's encoder pipe to determine which
> transcoder to toggle signalling on, use the cpu_transcoder field already
> stored in intel_hdmi.
you mean intel_hdcp
LGTM.
Reviewed-by: Ramalingam C <ramalingam.c at intel.com>
>
> This is particularly important for MST.
>
> Suggested-by: Ville Syrjälä <ville.syrjala at linux.intel.com>
> Signed-off-by: Sean Paul <seanpaul at chromium.org>
>
> Changes in v2:
> - Added to the set
> ---
> drivers/gpu/drm/i915/display/intel_ddi.c | 13 ++++---------
> drivers/gpu/drm/i915/display/intel_ddi.h | 2 ++
> .../gpu/drm/i915/display/intel_display_types.h | 1 +
> drivers/gpu/drm/i915/display/intel_dp.c | 1 +
> drivers/gpu/drm/i915/display/intel_hdcp.c | 11 +++++++----
> drivers/gpu/drm/i915/display/intel_hdmi.c | 16 +++++++++++-----
> 6 files changed, 26 insertions(+), 18 deletions(-)
>
> diff --git a/drivers/gpu/drm/i915/display/intel_ddi.c b/drivers/gpu/drm/i915/display/intel_ddi.c
> index 4a5bdf3ef51d..bbdaa6d1deec 100644
> --- a/drivers/gpu/drm/i915/display/intel_ddi.c
> +++ b/drivers/gpu/drm/i915/display/intel_ddi.c
> @@ -1971,12 +1971,12 @@ void intel_ddi_disable_transcoder_func(const struct intel_crtc_state *crtc_state
> }
>
> int intel_ddi_toggle_hdcp_signalling(struct intel_encoder *intel_encoder,
> + enum transcoder cpu_transcoder,
> bool enable)
> {
> struct drm_device *dev = intel_encoder->base.dev;
> struct drm_i915_private *dev_priv = to_i915(dev);
> intel_wakeref_t wakeref;
> - enum pipe pipe = 0;
> int ret = 0;
> u32 tmp;
>
> @@ -1985,18 +1985,13 @@ int intel_ddi_toggle_hdcp_signalling(struct intel_encoder *intel_encoder,
> if (WARN_ON(!wakeref))
> return -ENXIO;
>
> - if (WARN_ON(!intel_encoder->get_hw_state(intel_encoder, &pipe))) {
> - ret = -EIO;
> - goto out;
> - }
> -
> - tmp = I915_READ(TRANS_DDI_FUNC_CTL(pipe));
> + tmp = I915_READ(TRANS_DDI_FUNC_CTL(cpu_transcoder));
> if (enable)
> tmp |= TRANS_DDI_HDCP_SIGNALLING;
> else
> tmp &= ~TRANS_DDI_HDCP_SIGNALLING;
> - I915_WRITE(TRANS_DDI_FUNC_CTL(pipe), tmp);
> -out:
> + I915_WRITE(TRANS_DDI_FUNC_CTL(cpu_transcoder), tmp);
> +
> intel_display_power_put(dev_priv, intel_encoder->power_domain, wakeref);
> return ret;
> }
> diff --git a/drivers/gpu/drm/i915/display/intel_ddi.h b/drivers/gpu/drm/i915/display/intel_ddi.h
> index 19aeab1246ee..0644edaa7542 100644
> --- a/drivers/gpu/drm/i915/display/intel_ddi.h
> +++ b/drivers/gpu/drm/i915/display/intel_ddi.h
> @@ -18,6 +18,7 @@ struct intel_crtc_state;
> struct intel_dp;
> struct intel_dpll_hw_state;
> struct intel_encoder;
> +enum transcoder;
>
> void intel_ddi_fdi_post_disable(struct intel_encoder *intel_encoder,
> const struct intel_crtc_state *old_crtc_state,
> @@ -45,6 +46,7 @@ u8 intel_ddi_dp_voltage_max(struct intel_encoder *encoder);
> u8 intel_ddi_dp_pre_emphasis_max(struct intel_encoder *encoder,
> u8 voltage_swing);
> int intel_ddi_toggle_hdcp_signalling(struct intel_encoder *intel_encoder,
> + enum transcoder cpu_transcoder,
> bool enable);
> void icl_sanitize_encoder_pll_mapping(struct intel_encoder *encoder);
> int cnl_calc_wrpll_link(struct drm_i915_private *dev_priv,
> diff --git a/drivers/gpu/drm/i915/display/intel_display_types.h b/drivers/gpu/drm/i915/display/intel_display_types.h
> index 83ea04149b77..687768a913f6 100644
> --- a/drivers/gpu/drm/i915/display/intel_display_types.h
> +++ b/drivers/gpu/drm/i915/display/intel_display_types.h
> @@ -301,6 +301,7 @@ struct intel_hdcp_shim {
>
> /* Enables HDCP signalling on the port */
> int (*toggle_signalling)(struct intel_digital_port *intel_dig_port,
> + enum transcoder cpu_transcoder,
> bool enable);
>
> /* Ensures the link is still protected */
> diff --git a/drivers/gpu/drm/i915/display/intel_dp.c b/drivers/gpu/drm/i915/display/intel_dp.c
> index 5576193b4fed..c1a228b5f879 100644
> --- a/drivers/gpu/drm/i915/display/intel_dp.c
> +++ b/drivers/gpu/drm/i915/display/intel_dp.c
> @@ -6083,6 +6083,7 @@ int intel_dp_hdcp_read_v_prime_part(struct intel_digital_port *intel_dig_port,
>
> static
> int intel_dp_hdcp_toggle_signalling(struct intel_digital_port *intel_dig_port,
> + enum transcoder cpu_transcoder,
> bool enable)
> {
> /* Not used for single stream DisplayPort setups */
> diff --git a/drivers/gpu/drm/i915/display/intel_hdcp.c b/drivers/gpu/drm/i915/display/intel_hdcp.c
> index c4394c8e10eb..f8d56d3b2ddb 100644
> --- a/drivers/gpu/drm/i915/display/intel_hdcp.c
> +++ b/drivers/gpu/drm/i915/display/intel_hdcp.c
> @@ -693,7 +693,7 @@ static int intel_hdcp_auth(struct intel_connector *connector)
> intel_hdcp_get_repeater_ctl(dev_priv, cpu_transcoder,
> port));
>
> - ret = shim->toggle_signalling(intel_dig_port, true);
> + ret = shim->toggle_signalling(intel_dig_port, cpu_transcoder, true);
> if (ret)
> return ret;
>
> @@ -792,7 +792,8 @@ static int _intel_hdcp_disable(struct intel_connector *connector)
> port);
> I915_WRITE(HDCP_REP_CTL, I915_READ(HDCP_REP_CTL) & ~repeater_ctl);
>
> - ret = hdcp->shim->toggle_signalling(intel_dig_port, false);
> + ret = hdcp->shim->toggle_signalling(intel_dig_port, cpu_transcoder,
> + false);
> if (ret) {
> DRM_ERROR("Failed to disable HDCP signalling\n");
> return ret;
> @@ -1552,7 +1553,8 @@ static int hdcp2_enable_encryption(struct intel_connector *connector)
> WARN_ON(I915_READ(HDCP2_STATUS(dev_priv, cpu_transcoder, port)) &
> LINK_ENCRYPTION_STATUS);
> if (hdcp->shim->toggle_signalling) {
> - ret = hdcp->shim->toggle_signalling(intel_dig_port, true);
> + ret = hdcp->shim->toggle_signalling(intel_dig_port,
> + cpu_transcoder, true);
> if (ret) {
> DRM_ERROR("Failed to enable HDCP signalling. %d\n",
> ret);
> @@ -1603,7 +1605,8 @@ static int hdcp2_disable_encryption(struct intel_connector *connector)
> DRM_DEBUG_KMS("Disable Encryption Timedout");
>
> if (hdcp->shim->toggle_signalling) {
> - ret = hdcp->shim->toggle_signalling(intel_dig_port, false);
> + ret = hdcp->shim->toggle_signalling(intel_dig_port,
> + cpu_transcoder, false);
> if (ret) {
> DRM_ERROR("Failed to disable HDCP signalling. %d\n",
> ret);
> diff --git a/drivers/gpu/drm/i915/display/intel_hdmi.c b/drivers/gpu/drm/i915/display/intel_hdmi.c
> index a89a09b25260..5066efadca85 100644
> --- a/drivers/gpu/drm/i915/display/intel_hdmi.c
> +++ b/drivers/gpu/drm/i915/display/intel_hdmi.c
> @@ -1443,7 +1443,8 @@ int intel_hdmi_hdcp_read_v_prime_part(struct intel_digital_port *intel_dig_port,
> return ret;
> }
>
> -static int kbl_repositioning_enc_en_signal(struct intel_connector *connector)
> +static int kbl_repositioning_enc_en_signal(struct intel_connector *connector,
> + enum transcoder cpu_transcoder)
> {
> struct drm_i915_private *dev_priv = to_i915(connector->base.dev);
> struct intel_digital_port *intel_dig_port = conn_to_dig_port(connector);
> @@ -1460,12 +1461,14 @@ static int kbl_repositioning_enc_en_signal(struct intel_connector *connector)
> usleep_range(25, 50);
> }
>
> - ret = intel_ddi_toggle_hdcp_signalling(&intel_dig_port->base, false);
> + ret = intel_ddi_toggle_hdcp_signalling(&intel_dig_port->base,
> + cpu_transcoder, false);
> if (ret) {
> DRM_ERROR("Disable HDCP signalling failed (%d)\n", ret);
> return ret;
> }
> - ret = intel_ddi_toggle_hdcp_signalling(&intel_dig_port->base, true);
> + ret = intel_ddi_toggle_hdcp_signalling(&intel_dig_port->base,
> + cpu_transcoder, true);
> if (ret) {
> DRM_ERROR("Enable HDCP signalling failed (%d)\n", ret);
> return ret;
> @@ -1476,6 +1479,7 @@ static int kbl_repositioning_enc_en_signal(struct intel_connector *connector)
>
> static
> int intel_hdmi_hdcp_toggle_signalling(struct intel_digital_port *intel_dig_port,
> + enum transcoder cpu_transcoder,
> bool enable)
> {
> struct intel_hdmi *hdmi = &intel_dig_port->hdmi;
> @@ -1486,7 +1490,8 @@ int intel_hdmi_hdcp_toggle_signalling(struct intel_digital_port *intel_dig_port,
> if (!enable)
> usleep_range(6, 60); /* Bspec says >= 6us */
>
> - ret = intel_ddi_toggle_hdcp_signalling(&intel_dig_port->base, enable);
> + ret = intel_ddi_toggle_hdcp_signalling(&intel_dig_port->base,
> + cpu_transcoder, enable);
> if (ret) {
> DRM_ERROR("%s HDCP signalling failed (%d)\n",
> enable ? "Enable" : "Disable", ret);
> @@ -1498,7 +1503,8 @@ int intel_hdmi_hdcp_toggle_signalling(struct intel_digital_port *intel_dig_port,
> * opportunity and enc_en signalling in KABYLAKE.
> */
> if (IS_KABYLAKE(dev_priv) && enable)
> - return kbl_repositioning_enc_en_signal(connector);
> + return kbl_repositioning_enc_en_signal(connector,
> + cpu_transcoder);
>
> return 0;
> }
> --
> Sean Paul, Software Engineer, Google / Chromium OS
>
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