Ejemplo n.º 1
0
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;
}
Ejemplo n.º 2
0
/*-----------------------------------------------------------------------------
 * 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);
}
Ejemplo n.º 3
0
/*-----------------------------------------------------------------------------
 * 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;
}
Ejemplo n.º 4
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));
}
Ejemplo n.º 5
0
/*-----------------------------------------------------------------------------
 * 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;
	}
}
Ejemplo n.º 6
0
/*-----------------------------------------------------------------------------
 * 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;
	}

}
Ejemplo n.º 7
0
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;
}
Ejemplo n.º 8
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);
}
Ejemplo n.º 9
0
/*-----------------------------------------------------------------------------
 * 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;
}
Ejemplo n.º 10
0
/*-----------------------------------------------------------------------------
 * 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;
	}

}
Ejemplo n.º 11
0
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;
        }
}