drivers/fsi/i2cr-scom.c

1 // SPDX-License-Identifier: GPL-2.0
7 #include <linux/fsi.h>
11 #include "fsi-master-i2cr.h"
12 #include "fsi-slave.h"
17 	struct fsi_master_i2cr *i2cr;  member
26 		file->f_pos = offset;  in i2cr_scom_llseek()
29 		return -EINVAL;  in i2cr_scom_llseek()
37 	struct i2cr_scom *scom = filep->private_data;  in i2cr_scom_read()
42 		return -EINVAL;  in i2cr_scom_read()
44 	ret = fsi_master_i2cr_read(scom->i2cr, (u32)*offset, &data);  in i2cr_scom_read()
58 	struct i2cr_scom *scom = filep->private_data;  in i2cr_scom_write()
63 		return -EINVAL;  in i2cr_scom_write()
69 	ret = fsi_master_i2cr_write(scom->i2cr, (u32)*offset, data);  in i2cr_scom_write()
91 	if (!is_fsi_master_i2cr(fsi_dev->slave->master))  in i2cr_scom_probe()
92 		return -ENODEV;  in i2cr_scom_probe()
96 		return -ENOMEM;  in i2cr_scom_probe()
98 	scom->i2cr = to_fsi_master_i2cr(fsi_dev->slave->master);  in i2cr_scom_probe()
101 	scom->dev.type = &fsi_cdev_type;  in i2cr_scom_probe()
102 	scom->dev.parent = dev;  in i2cr_scom_probe()
103 	device_initialize(&scom->dev);  in i2cr_scom_probe()
105 	ret = fsi_get_new_minor(fsi_dev, fsi_dev_scom, &scom->dev.devt, &didx);  in i2cr_scom_probe()
109 	dev_set_name(&scom->dev, "scom%d", didx);  in i2cr_scom_probe()
110 	cdev_init(&scom->cdev, &i2cr_scom_fops);  in i2cr_scom_probe()
111 	ret = cdev_device_add(&scom->cdev, &scom->dev);  in i2cr_scom_probe()
113 		fsi_free_minor(scom->dev.devt);  in i2cr_scom_probe()
122 	cdev_device_del(&scom->cdev, &scom->dev);  in i2cr_scom_remove()
123 	fsi_free_minor(scom->dev.devt);  in i2cr_scom_remove()
129 	{ .compatible = "ibm,i2cr-scom" },