Orange Pi5 kernel

^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  1) // SPDX-License-Identifier: GPL-2.0-only
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  2) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  3)  * Intel Wireless WiMAX Connection 2400m
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  4)  * Sysfs interfaces to show driver and device information
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  5)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  6)  * Copyright (C) 2007 Intel Corporation <linux-wimax@intel.com>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  7)  * Inaky Perez-Gonzalez <inaky.perez-gonzalez@intel.com>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  8)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  9) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) #include <linux/netdevice.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) #include <linux/etherdevice.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) #include <linux/spinlock.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) #include <linux/device.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) #include "i2400m.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) #define D_SUBMODULE sysfs
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) #include "debug-levels.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22)  * Set the idle timeout (msecs)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24)  * FIXME: eventually this should be a common WiMAX stack method, but
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25)  * would like to wait to see how other devices manage it.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) static
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) ssize_t i2400m_idle_timeout_store(struct device *dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) 				  struct device_attribute *attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) 				  const char *buf, size_t size)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) 	ssize_t result;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) 	struct i2400m *i2400m = net_dev_to_i2400m(to_net_dev(dev));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) 	unsigned val;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) 	result = -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) 	if (sscanf(buf, "%u\n", &val) != 1)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) 		goto error_no_unsigned;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) 	if (val != 0 && (val < 100 || val > 300000 || val % 100 != 0)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) 		dev_err(dev, "idle_timeout: %u: invalid msecs specification; "
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) 			"valid values are 0, 100-300000 in 100 increments\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) 			val);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) 		goto error_bad_value;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) 	result = i2400m_set_idle_timeout(i2400m, val);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) 	if (result >= 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) 		result = size;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) error_no_unsigned:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) error_bad_value:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) 	return result;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) static
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) DEVICE_ATTR_WO(i2400m_idle_timeout);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) static
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) struct attribute *i2400m_dev_attrs[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) 	&dev_attr_i2400m_idle_timeout.attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) 	NULL,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) struct attribute_group i2400m_dev_attr_group = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) 	.name = NULL,		/* we want them in the same directory */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) 	.attrs = i2400m_dev_attrs,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) };