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;
}
}