diff options
Diffstat (limited to 'drivers/gpu/drm/i915/display/intel_hdcp.c')
| -rw-r--r-- | drivers/gpu/drm/i915/display/intel_hdcp.c | 27 |
1 files changed, 26 insertions, 1 deletions
diff --git a/drivers/gpu/drm/i915/display/intel_hdcp.c b/drivers/gpu/drm/i915/display/intel_hdcp.c index d5ed4c7dfbc0..3ebe035f382e 100644 --- a/drivers/gpu/drm/i915/display/intel_hdcp.c +++ b/drivers/gpu/drm/i915/display/intel_hdcp.c @@ -13,7 +13,7 @@ #include <linux/random.h> #include <drm/display/drm_hdcp_helper.h> -#include <drm/i915_component.h> +#include <drm/intel/i915_component.h> #include "i915_drv.h" #include "i915_reg.h" @@ -30,6 +30,29 @@ #define KEY_LOAD_TRIES 5 #define HDCP2_LC_RETRY_CNT 3 +/* WA: 16022217614 */ +static void +intel_hdcp_disable_hdcp_line_rekeying(struct intel_encoder *encoder, + struct intel_hdcp *hdcp) +{ + struct drm_i915_private *dev_priv = to_i915(encoder->base.dev); + + /* Here we assume HDMI is in TMDS mode of operation */ + if (encoder->type != INTEL_OUTPUT_HDMI) + return; + + if (DISPLAY_VER(dev_priv) >= 14) { + if (IS_DISPLAY_IP_STEP(dev_priv, IP_VER(14, 0), STEP_D0, STEP_FOREVER)) + intel_de_rmw(dev_priv, MTL_CHICKEN_TRANS(hdcp->cpu_transcoder), + 0, HDCP_LINE_REKEY_DISABLE); + else if (IS_DISPLAY_IP_STEP(dev_priv, IP_VER(14, 1), STEP_B0, STEP_FOREVER) || + IS_DISPLAY_IP_STEP(dev_priv, IP_VER(20, 0), STEP_B0, STEP_FOREVER)) + intel_de_rmw(dev_priv, + TRANS_DDI_FUNC_CTL(dev_priv, hdcp->cpu_transcoder), + 0, TRANS_DDI_HDCP_LINE_REKEY_DISABLE); + } +} + static int intel_conn_to_vcpi(struct intel_atomic_state *state, struct intel_connector *connector) { @@ -2005,6 +2028,8 @@ static int _intel_hdcp2_enable(struct intel_atomic_state *state, connector->base.base.id, connector->base.name, hdcp->content_type); + intel_hdcp_disable_hdcp_line_rekeying(connector->encoder, hdcp); + ret = hdcp2_authenticate_and_encrypt(state, connector); if (ret) { drm_dbg_kms(&i915->drm, "HDCP2 Type%d Enabling Failed. (%d)\n", |