static int isp_open(struct inode *inode, struct file *filp)
{
int ret = 0;
isp_t *dev = kmalloc(sizeof(isp_t), GFP_KERNEL);
if (!dev)
return -ENOMEM;
filp->private_data = dev;
dev->lock = __SPIN_LOCK_UNLOCKED();
dev->isp_status.status = 0;
sema_init(&dev->irq_sem, 0);
enable_isp_clock();
ret =
request_irq(IRQ_ISP, isp_isr, IRQF_DISABLED | IRQF_SHARED,
ISP_DEV_NAME, dev);
if (ret) {
err_print("request_irq failed ret = %d\n", ret);
goto err;
}
disable_irq(IRQ_ISP);
return 0;
err:
if (dev)
kfree(dev);
return ret;
}
static int isp_open(struct inode *inode, struct file *filp)
{
int ret = 0;
struct isp_t *dev = kmalloc(sizeof(struct isp_t), GFP_KERNEL);
if (!dev)
return -ENOMEM;
filp->private_data = dev;
spin_lock_init(&dev->lock);
dev->isp_status.status = 0;
init_completion(&dev->irq_sem);
ret =
pi_mgr_dfs_add_request(&isp_dfs_node, "isp", PI_MGR_PI_ID_MM,
PI_MGR_DFS_MIN_VALUE);
if (ret) {
printk(KERN_ERR "%s: failed to register PI DFS request\n",
__func__);
goto err;
}
ret = pi_mgr_qos_add_request(&isp_qos_node, "isp",
PI_MGR_PI_ID_ARM_CORE,
PI_MGR_QOS_DEFAULT_VALUE);
if (ret) {
printk(KERN_ERR "%s: failed to register PI QOS request\n",
__func__);
ret = -EIO;
goto qos_request_fail;
}
enable_isp_clock();
pi_mgr_qos_request_update(&isp_qos_node, 0);
scu_standby(0);
ret =
request_irq(IRQ_ISP, isp_isr, IRQF_DISABLED | IRQF_SHARED,
ISP_DEV_NAME, dev);
if (ret) {
err_print("request_irq failed ret = %d\n", ret);
goto err;
}
/* Ensure that only one CORE handles interrupt for the MM block. */
irq_set_affinity(IRQ_ISP, cpumask_of(0));
disable_irq(IRQ_ISP);
return 0;
qos_request_fail:
pi_mgr_dfs_request_remove(&isp_dfs_node);
err:
kfree(dev);
return ret;
}