49 		((struct timeriomem_rng_private_data *)rng->priv)
56 	struct timeriomem_rng_private_data *priv = to_rng_priv(rng);  in timeriomem_rng_data_present()  local
58 	if (!wait || priv->present)  in timeriomem_rng_data_present()
59 		return priv->present;  in timeriomem_rng_data_present()
61 	wait_for_completion(&priv->completion);  in timeriomem_rng_data_present()
68 	struct timeriomem_rng_private_data *priv = to_rng_priv(rng);  in timeriomem_rng_data_read()  local
72 	*data = readl(priv->io_base);  in timeriomem_rng_data_read()
76 	delay = cur - priv->expires;  in timeriomem_rng_data_read()
77 	delay = priv->period - (delay % priv->period);  in timeriomem_rng_data_read()
79 	priv->expires = cur + delay;  in timeriomem_rng_data_read()
80 	priv->present = 0;  in timeriomem_rng_data_read()
82 	reinit_completion(&priv->completion);  in timeriomem_rng_data_read()
83 	mod_timer(&priv->timer, priv->expires);  in timeriomem_rng_data_read()
90 	struct timeriomem_rng_private_data *priv  in timeriomem_rng_trigger()  local
93 	priv->present = 1;  in timeriomem_rng_trigger()
94 	complete(&priv->completion);  in timeriomem_rng_trigger()
100 	struct timeriomem_rng_private_data *priv;  in timeriomem_rng_probe()  local
121 	priv = devm_kzalloc(&pdev->dev,  in timeriomem_rng_probe()
123 	if (!priv)  in timeriomem_rng_probe()
126 	platform_set_drvdata(pdev, priv);  in timeriomem_rng_probe()
142 	priv->period = usecs_to_jiffies(period);  in timeriomem_rng_probe()
143 	if (priv->period < 1) {  in timeriomem_rng_probe()
148 	priv->expires	= jiffies;  in timeriomem_rng_probe()
149 	priv->present	= 1;  in timeriomem_rng_probe()
151 	init_completion(&priv->completion);  in timeriomem_rng_probe()
152 	complete(&priv->completion);  in timeriomem_rng_probe()
154 	setup_timer(&priv->timer, timeriomem_rng_trigger, (unsigned long)priv);  in timeriomem_rng_probe()
156 	priv->timeriomem_rng_ops.name		= dev_name(&pdev->dev);  in timeriomem_rng_probe()
157 	priv->timeriomem_rng_ops.data_present	= timeriomem_rng_data_present;  in timeriomem_rng_probe()
158 	priv->timeriomem_rng_ops.data_read	= timeriomem_rng_data_read;  in timeriomem_rng_probe()
159 	priv->timeriomem_rng_ops.priv		= (unsigned long)priv;  in timeriomem_rng_probe()
161 	priv->io_base = devm_ioremap_resource(&pdev->dev, res);  in timeriomem_rng_probe()
162 	if (IS_ERR(priv->io_base)) {  in timeriomem_rng_probe()
163 		err = PTR_ERR(priv->io_base);  in timeriomem_rng_probe()
167 	err = hwrng_register(&priv->timeriomem_rng_ops);  in timeriomem_rng_probe()
174 			priv->io_base, period);  in timeriomem_rng_probe()
179 	del_timer_sync(&priv->timer);  in timeriomem_rng_probe()
185 	struct timeriomem_rng_private_data *priv = platform_get_drvdata(pdev);  in timeriomem_rng_remove()  local
187 	hwrng_unregister(&priv->timeriomem_rng_ops);  in timeriomem_rng_remove()
189 	del_timer_sync(&priv->timer);  in timeriomem_rng_remove()