Loading...
1// SPDX-License-Identifier: GPL-2.0+
2/* Copyright (C) 2016 National Instruments Corp. */
3#include <linux/leds.h>
4#include <linux/phy.h>
5#include <linux/phy_led_triggers.h>
6#include <linux/netdevice.h>
7
8static struct phy_led_trigger *phy_speed_to_led_trigger(struct phy_device *phy,
9 unsigned int speed)
10{
11 unsigned int i;
12
13 for (i = 0; i < phy->phy_num_led_triggers; i++) {
14 if (phy->phy_led_triggers[i].speed == speed)
15 return &phy->phy_led_triggers[i];
16 }
17 return NULL;
18}
19
20static void phy_led_trigger_no_link(struct phy_device *phy)
21{
22 if (phy->last_triggered) {
23 led_trigger_event(&phy->last_triggered->trigger, LED_OFF);
24 led_trigger_event(&phy->led_link_trigger->trigger, LED_OFF);
25 phy->last_triggered = NULL;
26 }
27}
28
29void phy_led_trigger_change_speed(struct phy_device *phy)
30{
31 struct phy_led_trigger *plt;
32
33 if (!phy->link)
34 return phy_led_trigger_no_link(phy);
35
36 if (phy->speed == 0)
37 return;
38
39 plt = phy_speed_to_led_trigger(phy, phy->speed);
40 if (!plt) {
41 netdev_alert(phy->attached_dev,
42 "No phy led trigger registered for speed(%d)\n",
43 phy->speed);
44 return phy_led_trigger_no_link(phy);
45 }
46
47 if (plt != phy->last_triggered) {
48 if (!phy->last_triggered)
49 led_trigger_event(&phy->led_link_trigger->trigger,
50 LED_FULL);
51 else
52 led_trigger_event(&phy->last_triggered->trigger, LED_OFF);
53
54 led_trigger_event(&plt->trigger, LED_FULL);
55 phy->last_triggered = plt;
56 }
57}
58EXPORT_SYMBOL_GPL(phy_led_trigger_change_speed);
59
60static void phy_led_trigger_format_name(struct phy_device *phy, char *buf,
61 size_t size, const char *suffix)
62{
63 snprintf(buf, size, PHY_ID_FMT ":%s",
64 phy->mdio.bus->id, phy->mdio.addr, suffix);
65}
66
67static int phy_led_trigger_register(struct phy_device *phy,
68 struct phy_led_trigger *plt,
69 unsigned int speed,
70 const char *suffix)
71{
72 plt->speed = speed;
73 phy_led_trigger_format_name(phy, plt->name, sizeof(plt->name), suffix);
74 plt->trigger.name = plt->name;
75
76 return led_trigger_register(&plt->trigger);
77}
78
79static void phy_led_trigger_unregister(struct phy_led_trigger *plt)
80{
81 led_trigger_unregister(&plt->trigger);
82}
83
84int phy_led_triggers_register(struct phy_device *phy)
85{
86 int i, err;
87 unsigned int speeds[50];
88
89 phy->phy_num_led_triggers = phy_supported_speeds(phy, speeds,
90 ARRAY_SIZE(speeds));
91 if (!phy->phy_num_led_triggers)
92 return 0;
93
94 phy->led_link_trigger = devm_kzalloc(&phy->mdio.dev,
95 sizeof(*phy->led_link_trigger),
96 GFP_KERNEL);
97 if (!phy->led_link_trigger) {
98 err = -ENOMEM;
99 goto out_clear;
100 }
101
102 err = phy_led_trigger_register(phy, phy->led_link_trigger, 0, "link");
103 if (err)
104 goto out_free_link;
105
106 phy->phy_led_triggers = devm_kcalloc(&phy->mdio.dev,
107 phy->phy_num_led_triggers,
108 sizeof(struct phy_led_trigger),
109 GFP_KERNEL);
110 if (!phy->phy_led_triggers) {
111 err = -ENOMEM;
112 goto out_unreg_link;
113 }
114
115 for (i = 0; i < phy->phy_num_led_triggers; i++) {
116 err = phy_led_trigger_register(phy, &phy->phy_led_triggers[i],
117 speeds[i],
118 phy_speed_to_str(speeds[i]));
119 if (err)
120 goto out_unreg;
121 }
122
123 phy->last_triggered = NULL;
124 phy_led_trigger_change_speed(phy);
125
126 return 0;
127out_unreg:
128 while (i--)
129 phy_led_trigger_unregister(&phy->phy_led_triggers[i]);
130 devm_kfree(&phy->mdio.dev, phy->phy_led_triggers);
131out_unreg_link:
132 phy_led_trigger_unregister(phy->led_link_trigger);
133out_free_link:
134 devm_kfree(&phy->mdio.dev, phy->led_link_trigger);
135 phy->led_link_trigger = NULL;
136out_clear:
137 phy->phy_num_led_triggers = 0;
138 return err;
139}
140EXPORT_SYMBOL_GPL(phy_led_triggers_register);
141
142void phy_led_triggers_unregister(struct phy_device *phy)
143{
144 int i;
145
146 for (i = 0; i < phy->phy_num_led_triggers; i++)
147 phy_led_trigger_unregister(&phy->phy_led_triggers[i]);
148
149 if (phy->led_link_trigger)
150 phy_led_trigger_unregister(phy->led_link_trigger);
151}
152EXPORT_SYMBOL_GPL(phy_led_triggers_unregister);
1// SPDX-License-Identifier: GPL-2.0+
2/* Copyright (C) 2016 National Instruments Corp. */
3#include <linux/leds.h>
4#include <linux/phy.h>
5#include <linux/phy_led_triggers.h>
6#include <linux/netdevice.h>
7
8static struct phy_led_trigger *phy_speed_to_led_trigger(struct phy_device *phy,
9 unsigned int speed)
10{
11 unsigned int i;
12
13 for (i = 0; i < phy->phy_num_led_triggers; i++) {
14 if (phy->phy_led_triggers[i].speed == speed)
15 return &phy->phy_led_triggers[i];
16 }
17 return NULL;
18}
19
20static void phy_led_trigger_no_link(struct phy_device *phy)
21{
22 if (phy->last_triggered) {
23 led_trigger_event(&phy->last_triggered->trigger, LED_OFF);
24 led_trigger_event(&phy->led_link_trigger->trigger, LED_OFF);
25 phy->last_triggered = NULL;
26 }
27}
28
29void phy_led_trigger_change_speed(struct phy_device *phy)
30{
31 struct phy_led_trigger *plt;
32
33 if (!phy->link)
34 return phy_led_trigger_no_link(phy);
35
36 if (phy->speed == 0)
37 return;
38
39 plt = phy_speed_to_led_trigger(phy, phy->speed);
40 if (!plt) {
41 netdev_alert(phy->attached_dev,
42 "No phy led trigger registered for speed(%d)\n",
43 phy->speed);
44 return phy_led_trigger_no_link(phy);
45 }
46
47 if (plt != phy->last_triggered) {
48 if (!phy->last_triggered)
49 led_trigger_event(&phy->led_link_trigger->trigger,
50 LED_FULL);
51 else
52 led_trigger_event(&phy->last_triggered->trigger, LED_OFF);
53
54 led_trigger_event(&plt->trigger, LED_FULL);
55 phy->last_triggered = plt;
56 }
57}
58EXPORT_SYMBOL_GPL(phy_led_trigger_change_speed);
59
60static void phy_led_trigger_format_name(struct phy_device *phy, char *buf,
61 size_t size, const char *suffix)
62{
63 snprintf(buf, size, PHY_ID_FMT ":%s",
64 phy->mdio.bus->id, phy->mdio.addr, suffix);
65}
66
67static int phy_led_trigger_register(struct phy_device *phy,
68 struct phy_led_trigger *plt,
69 unsigned int speed,
70 const char *suffix)
71{
72 plt->speed = speed;
73 phy_led_trigger_format_name(phy, plt->name, sizeof(plt->name), suffix);
74 plt->trigger.name = plt->name;
75
76 return led_trigger_register(&plt->trigger);
77}
78
79static void phy_led_trigger_unregister(struct phy_led_trigger *plt)
80{
81 led_trigger_unregister(&plt->trigger);
82}
83
84int phy_led_triggers_register(struct phy_device *phy)
85{
86 int i, err;
87 unsigned int speeds[50];
88
89 phy->phy_num_led_triggers = phy_supported_speeds(phy, speeds,
90 ARRAY_SIZE(speeds));
91 if (!phy->phy_num_led_triggers)
92 return 0;
93
94 phy->led_link_trigger = devm_kzalloc(&phy->mdio.dev,
95 sizeof(*phy->led_link_trigger),
96 GFP_KERNEL);
97 if (!phy->led_link_trigger) {
98 err = -ENOMEM;
99 goto out_clear;
100 }
101
102 err = phy_led_trigger_register(phy, phy->led_link_trigger, 0, "link");
103 if (err)
104 goto out_free_link;
105
106 phy->phy_led_triggers = devm_kcalloc(&phy->mdio.dev,
107 phy->phy_num_led_triggers,
108 sizeof(struct phy_led_trigger),
109 GFP_KERNEL);
110 if (!phy->phy_led_triggers) {
111 err = -ENOMEM;
112 goto out_unreg_link;
113 }
114
115 for (i = 0; i < phy->phy_num_led_triggers; i++) {
116 err = phy_led_trigger_register(phy, &phy->phy_led_triggers[i],
117 speeds[i],
118 phy_speed_to_str(speeds[i]));
119 if (err)
120 goto out_unreg;
121 }
122
123 phy->last_triggered = NULL;
124 phy_led_trigger_change_speed(phy);
125
126 return 0;
127out_unreg:
128 while (i--)
129 phy_led_trigger_unregister(&phy->phy_led_triggers[i]);
130 devm_kfree(&phy->mdio.dev, phy->phy_led_triggers);
131out_unreg_link:
132 phy_led_trigger_unregister(phy->led_link_trigger);
133out_free_link:
134 devm_kfree(&phy->mdio.dev, phy->led_link_trigger);
135 phy->led_link_trigger = NULL;
136out_clear:
137 phy->phy_num_led_triggers = 0;
138 return err;
139}
140EXPORT_SYMBOL_GPL(phy_led_triggers_register);
141
142void phy_led_triggers_unregister(struct phy_device *phy)
143{
144 int i;
145
146 for (i = 0; i < phy->phy_num_led_triggers; i++)
147 phy_led_trigger_unregister(&phy->phy_led_triggers[i]);
148
149 if (phy->led_link_trigger)
150 phy_led_trigger_unregister(phy->led_link_trigger);
151}
152EXPORT_SYMBOL_GPL(phy_led_triggers_unregister);