platform/x86: intel_scu_ipcutil: Convert to use new SCU IPC API (663cc188) · Commits · 戴 / test

drivers/platform/x86/intel_scu_ipcutil.c

+39 −4

Original line number	Diff line number	Diff line
		@@ -22,6 +22,9 @@

		static int major;

		struct intel_scu_ipc_dev *scu;
		static DEFINE_MUTEX(scu_lock);

		/* IOCTL commands */
		#define INTE_SCU_IPC_REGISTER_READ 0
		#define INTE_SCU_IPC_REGISTER_WRITE 1
		@@ -52,12 +55,12 @@ static int scu_reg_access(u32 cmd, struct scu_ipc_data *data)

		switch (cmd) {
		case INTE_SCU_IPC_REGISTER_READ:
		return intel_scu_ipc_readv(data->addr, data->data, count);
		return intel_scu_ipc_dev_readv(scu, data->addr, data->data, count);
		case INTE_SCU_IPC_REGISTER_WRITE:
		return intel_scu_ipc_writev(data->addr, data->data, count);
		return intel_scu_ipc_dev_writev(scu, data->addr, data->data, count);
		case INTE_SCU_IPC_REGISTER_UPDATE:
		return intel_scu_ipc_update_register(data->addr[0],
		data->data[0], data->mask);
		return intel_scu_ipc_dev_update(scu, data->addr[0], data->data[0],
		data->mask);
		default:
		return -ENOTTY;
		}
		@@ -91,8 +94,40 @@ static long scu_ipc_ioctl(struct file *fp, unsigned int cmd,
		return 0;
		}

		static int scu_ipc_open(struct inode inode, struct file file)
		{
		int ret = 0;

		/* Only single open at the time */
		mutex_lock(&scu_lock);
		if (scu) {
		ret = -EBUSY;
		goto unlock;
		}

		scu = intel_scu_ipc_dev_get();
		if (!scu)
		ret = -ENODEV;

		unlock:
		mutex_unlock(&scu_lock);
		return ret;
		}

		static int scu_ipc_release(struct inode inode, struct file file)
		{
		mutex_lock(&scu_lock);
		intel_scu_ipc_dev_put(scu);
		scu = NULL;
		mutex_unlock(&scu_lock);

		return 0;
		}

		static const struct file_operations scu_ipc_fops = {
		.unlocked_ioctl = scu_ipc_ioctl,
		.open = scu_ipc_open,
		.release = scu_ipc_release,
		};

		static int __init ipc_module_init(void)

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