static ssize_t hdcp_enable_write(struct device *device,
struct device_attribute *attr, const char *buf, size_t count)
{
int enable;
if(hdcp == NULL)
return -EINVAL;
sscanf(buf, "%d", &enable);
if(hdcp->enable != enable)
{
/* Post event to workqueue */
if(enable) {
if (hdcp_submit_work(HDCP_ENABLE_CTL, 0) == 0)
return -EFAULT;
}
else {
hdcp_cancel_work(&hdcp->pending_start);
hdcp_cancel_work(&hdcp->pending_wq_event);
/* Post event to workqueue */
if (hdcp_submit_work(HDCP_DISABLE_CTL, 0) == 0)
return -EFAULT;
}
hdcp->enable = enable;
}
return count;
}
/*-----------------------------------------------------------------------------
* Function: hdcp_start_frame_cb
*-----------------------------------------------------------------------------
*/
static void hdcp_start_frame_cb(void)
{
DBG("hdcp_start_frame_cb()");
/* Cancel any pending work */
if (hdcp->pending_start)
hdcp_cancel_work(&hdcp->pending_start);
if (hdcp->pending_wq_event)
hdcp_cancel_work(&hdcp->pending_wq_event);
hdcp->pending_start = hdcp_submit_work(HDCP_START_FRAME_EVENT,
HDCP_ENABLE_DELAY);
}
/*-----------------------------------------------------------------------------
* Function: hdcp_disable_ctl
*-----------------------------------------------------------------------------
*/
static long hdcp_disable_ctl(void)
{
DBG("hdcp_ioctl() - DISABLE %u", jiffies_to_msecs(jiffies));
hdcp_cancel_work(&hdcp.pending_start);
hdcp_cancel_work(&hdcp.pending_wq_event);
hdcp.pending_disable = 1;
/* Post event to workqueue */
if (hdcp_submit_work(HDCP_DISABLE_CTL, 0) == 0)
return -EFAULT;
return 0;
}
/*-----------------------------------------------------------------------------
* Function: hdcp_power_off_cb
*-----------------------------------------------------------------------------
*/
static void hdcp_power_off_cb(void)
{
DBG("%s", __FUNCTION__);
if(!hdcp->enable)
return;
hdcp_cancel_work(&hdcp->pending_start);
hdcp_cancel_work(&hdcp->pending_wq_event);
init_completion(&hdcp->complete);
/* Post event to workqueue */
if (hdcp_submit_work(HDCP_STOP_FRAME_EVENT, 0))
wait_for_completion_interruptible_timeout(&hdcp->complete,
msecs_to_jiffies(2000));
}
/*-----------------------------------------------------------------------------
* Function: hdcp_wq_step2_authentication
*-----------------------------------------------------------------------------
*/
static void hdcp_wq_step2_authentication(void)
{
int status = HDCP_OK;
/* KSV list timeout is running and should be canceled */
hdcp_cancel_work(&hdcp.pending_wq_event);
status = hdcp_lib_step2();
if (status == -HDCP_CANCELLED_AUTH) {
DBG("Authentication step 2 cancelled.");
return;
} else if (status < 0)
hdcp_wq_authentication_failure();
else {
printk(KERN_INFO "HDCP: (Repeater) authentication step 2 "
"successful\n");
hdcp.hdcp_state = HDCP_LINK_INTEGRITY_CHECK;
hdcp.auth_state = HDCP_STATE_AUTH_3RD_STEP;
/* Restore retry counter */
if (hdcp.en_ctrl->nb_retry == 0)
hdcp.retry_cnt = HDCP_INFINITE_REAUTH;
else
hdcp.retry_cnt = hdcp.en_ctrl->nb_retry;
}
}
/*-----------------------------------------------------------------------------
* Function: hdcp_wq_authentication_failure
*-----------------------------------------------------------------------------
*/
static void hdcp_wq_authentication_failure(void)
{
if (hdcp->hdmi_state == HDMI_STOPPED) {
return;
}
rk30_hdcp_disable(hdcp);
rk30_hdmi_control_output(hdcp->hdmi, HDMI_VIDEO_MUTE | HDMI_AUDIO_MUTE);
hdcp_cancel_work(&hdcp->pending_wq_event);
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->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;
}
}
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_start_frame_cb
*-----------------------------------------------------------------------------
*/
static void hdcp_start_frame_cb(void)
{
DBG("hdcp_start_frame_cb() %u", jiffies_to_msecs(jiffies));
if (!hdcp.hdcp_keys_loaded) {
DBG("%s: hdcp_keys not loaded = %d",
__func__, hdcp.hdcp_keys_loaded);
return;
}
/* Cancel any pending work */
if (hdcp.pending_start)
hdcp_cancel_work(&hdcp.pending_start);
if (hdcp.pending_wq_event)
hdcp_cancel_work(&hdcp.pending_wq_event);
hdcp.hpd_low = 0;
hdcp.pending_disable = 0;
hdcp.retry_cnt = HDCP_INFINITE_REAUTH;
hdcp.pending_start = hdcp_submit_work(HDCP_START_FRAME_EVENT,
HDCP_ENABLE_DELAY);
}
/*-----------------------------------------------------------------------------
* Function: hdcp_wq_disable
*-----------------------------------------------------------------------------
*/
static void hdcp_wq_disable(int event)
{
printk(KERN_INFO "HDCP: disabled");
hdcp_cancel_work(&hdcp->pending_wq_event);
rk30_hdcp_disable(hdcp);
if(event == HDCP_DISABLE_CTL) {
hdcp->hdcp_state = HDCP_DISABLED;
if(hdcp->hdmi_state == HDMI_STARTED)
rk30_hdmi_control_output(hdcp->hdmi, HDMI_AV_UNMUTE);
}
else if(event == HDCP_STOP_FRAME_EVENT)
hdcp->hdcp_state = HDCP_ENABLE_PENDING;
}
/*-----------------------------------------------------------------------------
* 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;
}
}
static void omap4_hdcp_irq_cb(int status)
{
HDCP_DBG("hdcp_irq_cb() status=%x", status);
if (!hdcp.hdcp_keys_loaded) {
HDCP_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 */
if (hdcp.pending_start) {
pr_err("cancelling work for pending start\n");
hdcp_cancel_work(&hdcp.pending_start);
}
hdcp_wq_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;
}
}