This source file includes following definitions.
- occ_sysfs_show
- occ_error_show
- occ_sysfs_poll_done
- occ_setup_sysfs
- occ_shutdown
1
2
3
4 #include <linux/bitops.h>
5 #include <linux/device.h>
6 #include <linux/export.h>
7 #include <linux/hwmon-sysfs.h>
8 #include <linux/kernel.h>
9 #include <linux/sysfs.h>
10
11 #include "common.h"
12
13
14 #define OCC_STAT_MASTER BIT(7)
15 #define OCC_STAT_ACTIVE BIT(0)
16
17
18 #define OCC_EXT_STAT_DVFS_OT BIT(7)
19 #define OCC_EXT_STAT_DVFS_POWER BIT(6)
20 #define OCC_EXT_STAT_MEM_THROTTLE BIT(5)
21 #define OCC_EXT_STAT_QUICK_DROP BIT(4)
22
23 static ssize_t occ_sysfs_show(struct device *dev,
24 struct device_attribute *attr, char *buf)
25 {
26 int rc;
27 int val = 0;
28 struct occ *occ = dev_get_drvdata(dev);
29 struct occ_poll_response_header *header;
30 struct sensor_device_attribute *sattr = to_sensor_dev_attr(attr);
31
32 rc = occ_update_response(occ);
33 if (rc)
34 return rc;
35
36 header = (struct occ_poll_response_header *)occ->resp.data;
37
38 switch (sattr->index) {
39 case 0:
40 val = !!(header->status & OCC_STAT_MASTER);
41 break;
42 case 1:
43 val = !!(header->status & OCC_STAT_ACTIVE);
44 break;
45 case 2:
46 val = !!(header->ext_status & OCC_EXT_STAT_DVFS_OT);
47 break;
48 case 3:
49 val = !!(header->ext_status & OCC_EXT_STAT_DVFS_POWER);
50 break;
51 case 4:
52 val = !!(header->ext_status & OCC_EXT_STAT_MEM_THROTTLE);
53 break;
54 case 5:
55 val = !!(header->ext_status & OCC_EXT_STAT_QUICK_DROP);
56 break;
57 case 6:
58 val = header->occ_state;
59 break;
60 case 7:
61 if (header->status & OCC_STAT_MASTER)
62 val = hweight8(header->occs_present);
63 else
64 val = 1;
65 break;
66 default:
67 return -EINVAL;
68 }
69
70 return snprintf(buf, PAGE_SIZE - 1, "%d\n", val);
71 }
72
73 static ssize_t occ_error_show(struct device *dev,
74 struct device_attribute *attr, char *buf)
75 {
76 struct occ *occ = dev_get_drvdata(dev);
77
78 occ_update_response(occ);
79
80 return snprintf(buf, PAGE_SIZE - 1, "%d\n", occ->error);
81 }
82
83 static SENSOR_DEVICE_ATTR(occ_master, 0444, occ_sysfs_show, NULL, 0);
84 static SENSOR_DEVICE_ATTR(occ_active, 0444, occ_sysfs_show, NULL, 1);
85 static SENSOR_DEVICE_ATTR(occ_dvfs_overtemp, 0444, occ_sysfs_show, NULL, 2);
86 static SENSOR_DEVICE_ATTR(occ_dvfs_power, 0444, occ_sysfs_show, NULL, 3);
87 static SENSOR_DEVICE_ATTR(occ_mem_throttle, 0444, occ_sysfs_show, NULL, 4);
88 static SENSOR_DEVICE_ATTR(occ_quick_pwr_drop, 0444, occ_sysfs_show, NULL, 5);
89 static SENSOR_DEVICE_ATTR(occ_state, 0444, occ_sysfs_show, NULL, 6);
90 static SENSOR_DEVICE_ATTR(occs_present, 0444, occ_sysfs_show, NULL, 7);
91 static DEVICE_ATTR_RO(occ_error);
92
93 static struct attribute *occ_attributes[] = {
94 &sensor_dev_attr_occ_master.dev_attr.attr,
95 &sensor_dev_attr_occ_active.dev_attr.attr,
96 &sensor_dev_attr_occ_dvfs_overtemp.dev_attr.attr,
97 &sensor_dev_attr_occ_dvfs_power.dev_attr.attr,
98 &sensor_dev_attr_occ_mem_throttle.dev_attr.attr,
99 &sensor_dev_attr_occ_quick_pwr_drop.dev_attr.attr,
100 &sensor_dev_attr_occ_state.dev_attr.attr,
101 &sensor_dev_attr_occs_present.dev_attr.attr,
102 &dev_attr_occ_error.attr,
103 NULL
104 };
105
106 static const struct attribute_group occ_sysfs = {
107 .attrs = occ_attributes,
108 };
109
110 void occ_sysfs_poll_done(struct occ *occ)
111 {
112 const char *name;
113 struct occ_poll_response_header *header =
114 (struct occ_poll_response_header *)occ->resp.data;
115
116
117
118
119
120 if (!occ->hwmon)
121 goto done;
122
123 if ((header->status & OCC_STAT_MASTER) !=
124 (occ->prev_stat & OCC_STAT_MASTER)) {
125 name = sensor_dev_attr_occ_master.dev_attr.attr.name;
126 sysfs_notify(&occ->bus_dev->kobj, NULL, name);
127 }
128
129 if ((header->status & OCC_STAT_ACTIVE) !=
130 (occ->prev_stat & OCC_STAT_ACTIVE)) {
131 name = sensor_dev_attr_occ_active.dev_attr.attr.name;
132 sysfs_notify(&occ->bus_dev->kobj, NULL, name);
133 }
134
135 if ((header->ext_status & OCC_EXT_STAT_DVFS_OT) !=
136 (occ->prev_ext_stat & OCC_EXT_STAT_DVFS_OT)) {
137 name = sensor_dev_attr_occ_dvfs_overtemp.dev_attr.attr.name;
138 sysfs_notify(&occ->bus_dev->kobj, NULL, name);
139 }
140
141 if ((header->ext_status & OCC_EXT_STAT_DVFS_POWER) !=
142 (occ->prev_ext_stat & OCC_EXT_STAT_DVFS_POWER)) {
143 name = sensor_dev_attr_occ_dvfs_power.dev_attr.attr.name;
144 sysfs_notify(&occ->bus_dev->kobj, NULL, name);
145 }
146
147 if ((header->ext_status & OCC_EXT_STAT_MEM_THROTTLE) !=
148 (occ->prev_ext_stat & OCC_EXT_STAT_MEM_THROTTLE)) {
149 name = sensor_dev_attr_occ_mem_throttle.dev_attr.attr.name;
150 sysfs_notify(&occ->bus_dev->kobj, NULL, name);
151 }
152
153 if ((header->ext_status & OCC_EXT_STAT_QUICK_DROP) !=
154 (occ->prev_ext_stat & OCC_EXT_STAT_QUICK_DROP)) {
155 name = sensor_dev_attr_occ_quick_pwr_drop.dev_attr.attr.name;
156 sysfs_notify(&occ->bus_dev->kobj, NULL, name);
157 }
158
159 if ((header->status & OCC_STAT_MASTER) &&
160 header->occs_present != occ->prev_occs_present) {
161 name = sensor_dev_attr_occs_present.dev_attr.attr.name;
162 sysfs_notify(&occ->bus_dev->kobj, NULL, name);
163 }
164
165 if (occ->error && occ->error != occ->prev_error) {
166 name = dev_attr_occ_error.attr.name;
167 sysfs_notify(&occ->bus_dev->kobj, NULL, name);
168 }
169
170
171
172 done:
173 occ->prev_error = occ->error;
174 occ->prev_stat = header->status;
175 occ->prev_ext_stat = header->ext_status;
176 occ->prev_occs_present = header->occs_present;
177 }
178
179 int occ_setup_sysfs(struct occ *occ)
180 {
181 return sysfs_create_group(&occ->bus_dev->kobj, &occ_sysfs);
182 }
183
184 void occ_shutdown(struct occ *occ)
185 {
186 sysfs_remove_group(&occ->bus_dev->kobj, &occ_sysfs);
187 }
188 EXPORT_SYMBOL_GPL(occ_shutdown);