static void hdcp_wq_disable(void) { printk(KERN_INFO "HDCP: disabled\n"); hdcp_cancel_work(&hdcp.pending_wq_event); hdcp_lib_disable(); hdcp.pending_disable = 0; }
/*----------------------------------------------------------------------------- * Function: hdcp_irq_cb *----------------------------------------------------------------------------- */ static void hdcp_irq_cb(int status) { DBG("hdcp_irq_cb() status=%x", status); if (!hdcp.hdcp_keys_loaded) { DBG("%s: hdcp_keys not loaded = %d", __func__, hdcp.hdcp_keys_loaded); return; } /* Disable auto Ri/BCAPS immediately */ if (((status & HDMI_RI_ERR) || (status & HDMI_BCAP) || (status & HDMI_HPD_LOW)) && (hdcp.hdcp_state != HDCP_ENABLE_PENDING)) { hdcp_lib_auto_ri_check(false); hdcp_lib_auto_bcaps_rdy_check(false); } /* Work queue execution not required if HDCP is disabled */ /* TODO: ignore interrupts if they are masked (cannnot access UMASK * here so should use global variable */ if ((hdcp.hdcp_state != HDCP_DISABLED) && (hdcp.hdcp_state != HDCP_ENABLE_PENDING)) { if (status & HDMI_HPD_LOW) { hdcp_lib_set_encryption(HDCP_ENC_OFF); hdcp_ddc_abort(); } if (status & HDMI_RI_ERR) { hdcp_lib_set_av_mute(AV_MUTE_SET); hdcp_lib_set_encryption(HDCP_ENC_OFF); hdcp_submit_work(HDCP_RI_FAIL_EVENT, 0); } /* RI error takes precedence over BCAP */ else if (status & HDMI_BCAP) hdcp_submit_work(HDCP_KSV_LIST_RDY_EVENT, 0); } if (status & HDMI_HPD_LOW) { hdcp.pending_disable = 1; /* Used to exit on-going HDCP * work */ hdcp.hpd_low = 0; /* Used to cancel HDCP works */ hdcp_lib_disable(); /* In case of HDCP_STOP_FRAME_EVENT, HDCP stop * frame callback is blocked and waiting for * HDCP driver to finish accessing the HW * before returning * Reason is to avoid HDMI driver to shutdown * DSS/HDMI power before HDCP work is finished */ hdcp.hdmi_state = HDMI_STOPPED; hdcp.hdcp_state = HDCP_ENABLE_PENDING; hdcp.auth_state = HDCP_STATE_DISABLED; } }
/*----------------------------------------------------------------------------- * Function: hdcp_wq_authentication_failure *----------------------------------------------------------------------------- */ static void hdcp_wq_authentication_failure(void) { if (hdcp.hdmi_state == HDMI_STOPPED) { hdcp.auth_state = HDCP_STATE_AUTH_FAILURE; return; } hdcp_lib_auto_ri_check(false); hdcp_lib_auto_bcaps_rdy_check(false); hdcp_lib_set_av_mute(AV_MUTE_SET); hdcp_lib_set_encryption(HDCP_ENC_OFF); hdcp_cancel_work(&hdcp.pending_wq_event); hdcp_lib_disable(); hdcp.pending_disable = 0; if (hdcp.retry_cnt && (hdcp.hdmi_state != HDMI_STOPPED)) { if (hdcp.retry_cnt < HDCP_INFINITE_REAUTH) { hdcp.retry_cnt--; printk(KERN_INFO "HDCP: authentication failed - " "retrying, attempts=%d\n", hdcp.retry_cnt); } else printk(KERN_INFO "HDCP: authentication failed - " "retrying\n"); hdcp.hdcp_state = HDCP_AUTHENTICATION_START; hdcp.auth_state = HDCP_STATE_AUTH_FAIL_RESTARTING; hdcp.pending_wq_event = hdcp_submit_work(HDCP_AUTH_REATT_EVENT, HDCP_REAUTH_DELAY); } else { printk(KERN_INFO "HDCP: authentication failed - " "HDCP disabled\n"); hdcp.hdcp_state = HDCP_ENABLE_PENDING; hdcp.auth_state = HDCP_STATE_AUTH_FAILURE; } }