static struct mcuio_soft_hc *__setup_shc(const struct mcuio_soft_hc_ops *ops,
void *priv)
{
struct mcuio_soft_hc *shc = kzalloc(sizeof(*shc), GFP_KERNEL);
if (!shc)
return ERR_PTR(-ENOMEM);
init_kthread_worker(&shc->irq_kworker);
shc->irq_kworker_task = kthread_run(kthread_worker_fn,
&shc->irq_kworker,
"shc_irq");
if (IS_ERR(shc->irq_kworker_task)) {
pr_err("failed to create irq tsk for shc\n");
return ERR_PTR(PTR_ERR(shc->irq_kworker_task));
}
init_kthread_work(&shc->do_irq, __do_irq);
shc->ops = ops;
shc->priv = priv;
shc->rx_circ_buf.head = shc->rx_circ_buf.tail = 0;
shc->rx_circ_buf.buf = shc->rx_buf;
shc->chip.name = "MCUIO-SHC";
shc->chip.irq_mask = mcuio_soft_hc_irq_mask;
shc->chip.irq_unmask = mcuio_soft_hc_irq_unmask;
shc->irqno = irq_alloc_desc(0);
irq_set_chip(shc->irqno, &shc->chip);
irq_set_handler(shc->irqno, &handle_simple_irq);
irq_modify_status(shc->irqno,
IRQ_NOREQUEST | IRQ_NOAUTOEN,
IRQ_NOPROBE);
return shc;
}
int create_irq(void)
{
int irq = irq_alloc_desc(numa_node_id());
if (irq >= 0)
activate_irq(irq);
return irq;
}
static int lpe_audio_setup(struct drm_i915_private *dev_priv)
{
int ret;
dev_priv->lpe_audio.irq = irq_alloc_desc(0);
if (dev_priv->lpe_audio.irq < 0) {
DRM_ERROR("Failed to allocate IRQ desc: %d\n",
dev_priv->lpe_audio.irq);
ret = dev_priv->lpe_audio.irq;
goto err;
}
DRM_DEBUG("irq = %d\n", dev_priv->lpe_audio.irq);
ret = lpe_audio_irq_init(dev_priv);
if (ret) {
DRM_ERROR("Failed to initialize irqchip for lpe audio: %d\n",
ret);
goto err_free_irq;
}
dev_priv->lpe_audio.platdev = lpe_audio_platdev_create(dev_priv);
if (IS_ERR(dev_priv->lpe_audio.platdev)) {
ret = PTR_ERR(dev_priv->lpe_audio.platdev);
DRM_ERROR("Failed to create lpe audio platform device: %d\n",
ret);
goto err_free_irq;
}
/* enable chicken bit; at least this is required for Dell Wyse 3040
* with DP outputs (but only sometimes by some reason!)
*/
I915_WRITE(VLV_AUD_CHICKEN_BIT_REG, VLV_CHICKEN_BIT_DBG_ENABLE);
return 0;
err_free_irq:
irq_free_desc(dev_priv->lpe_audio.irq);
err:
dev_priv->lpe_audio.irq = -1;
dev_priv->lpe_audio.platdev = NULL;
return ret;
}
