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path: root/drivers/w1/slaves/w1_ds2408.c
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Diffstat (limited to 'drivers/w1/slaves/w1_ds2408.c')
-rw-r--r--drivers/w1/slaves/w1_ds2408.c174
1 files changed, 52 insertions, 122 deletions
diff --git a/drivers/w1/slaves/w1_ds2408.c b/drivers/w1/slaves/w1_ds2408.c
index cb8a8e5d9573..7dfa0e11688a 100644
--- a/drivers/w1/slaves/w1_ds2408.c
+++ b/drivers/w1/slaves/w1_ds2408.c
@@ -72,10 +72,9 @@ static int _read_reg(struct w1_slave *sl, u8 address, unsigned char* buf)
72 return 1; 72 return 1;
73} 73}
74 74
75static ssize_t w1_f29_read_state( 75static ssize_t state_read(struct file *filp, struct kobject *kobj,
76 struct file *filp, struct kobject *kobj, 76 struct bin_attribute *bin_attr, char *buf, loff_t off,
77 struct bin_attribute *bin_attr, 77 size_t count)
78 char *buf, loff_t off, size_t count)
79{ 78{
80 dev_dbg(&kobj_to_w1_slave(kobj)->dev, 79 dev_dbg(&kobj_to_w1_slave(kobj)->dev,
81 "Reading %s kobj: %p, off: %0#10x, count: %zu, buff addr: %p", 80 "Reading %s kobj: %p, off: %0#10x, count: %zu, buff addr: %p",
@@ -85,10 +84,9 @@ static ssize_t w1_f29_read_state(
85 return _read_reg(kobj_to_w1_slave(kobj), W1_F29_REG_LOGIG_STATE, buf); 84 return _read_reg(kobj_to_w1_slave(kobj), W1_F29_REG_LOGIG_STATE, buf);
86} 85}
87 86
88static ssize_t w1_f29_read_output( 87static ssize_t output_read(struct file *filp, struct kobject *kobj,
89 struct file *filp, struct kobject *kobj, 88 struct bin_attribute *bin_attr, char *buf,
90 struct bin_attribute *bin_attr, 89 loff_t off, size_t count)
91 char *buf, loff_t off, size_t count)
92{ 90{
93 dev_dbg(&kobj_to_w1_slave(kobj)->dev, 91 dev_dbg(&kobj_to_w1_slave(kobj)->dev,
94 "Reading %s kobj: %p, off: %0#10x, count: %zu, buff addr: %p", 92 "Reading %s kobj: %p, off: %0#10x, count: %zu, buff addr: %p",
@@ -99,10 +97,9 @@ static ssize_t w1_f29_read_output(
99 W1_F29_REG_OUTPUT_LATCH_STATE, buf); 97 W1_F29_REG_OUTPUT_LATCH_STATE, buf);
100} 98}
101 99
102static ssize_t w1_f29_read_activity( 100static ssize_t activity_read(struct file *filp, struct kobject *kobj,
103 struct file *filp, struct kobject *kobj, 101 struct bin_attribute *bin_attr, char *buf,
104 struct bin_attribute *bin_attr, 102 loff_t off, size_t count)
105 char *buf, loff_t off, size_t count)
106{ 103{
107 dev_dbg(&kobj_to_w1_slave(kobj)->dev, 104 dev_dbg(&kobj_to_w1_slave(kobj)->dev,
108 "Reading %s kobj: %p, off: %0#10x, count: %zu, buff addr: %p", 105 "Reading %s kobj: %p, off: %0#10x, count: %zu, buff addr: %p",
@@ -113,10 +110,9 @@ static ssize_t w1_f29_read_activity(
113 W1_F29_REG_ACTIVITY_LATCH_STATE, buf); 110 W1_F29_REG_ACTIVITY_LATCH_STATE, buf);
114} 111}
115 112
116static ssize_t w1_f29_read_cond_search_mask( 113static ssize_t cond_search_mask_read(struct file *filp, struct kobject *kobj,
117 struct file *filp, struct kobject *kobj, 114 struct bin_attribute *bin_attr, char *buf,
118 struct bin_attribute *bin_attr, 115 loff_t off, size_t count)
119 char *buf, loff_t off, size_t count)
120{ 116{
121 dev_dbg(&kobj_to_w1_slave(kobj)->dev, 117 dev_dbg(&kobj_to_w1_slave(kobj)->dev,
122 "Reading %s kobj: %p, off: %0#10x, count: %zu, buff addr: %p", 118 "Reading %s kobj: %p, off: %0#10x, count: %zu, buff addr: %p",
@@ -127,10 +123,10 @@ static ssize_t w1_f29_read_cond_search_mask(
127 W1_F29_REG_COND_SEARCH_SELECT_MASK, buf); 123 W1_F29_REG_COND_SEARCH_SELECT_MASK, buf);
128} 124}
129 125
130static ssize_t w1_f29_read_cond_search_polarity( 126static ssize_t cond_search_polarity_read(struct file *filp,
131 struct file *filp, struct kobject *kobj, 127 struct kobject *kobj,
132 struct bin_attribute *bin_attr, 128 struct bin_attribute *bin_attr,
133 char *buf, loff_t off, size_t count) 129 char *buf, loff_t off, size_t count)
134{ 130{
135 if (count != 1 || off != 0) 131 if (count != 1 || off != 0)
136 return -EFAULT; 132 return -EFAULT;
@@ -138,10 +134,9 @@ static ssize_t w1_f29_read_cond_search_polarity(
138 W1_F29_REG_COND_SEARCH_POL_SELECT, buf); 134 W1_F29_REG_COND_SEARCH_POL_SELECT, buf);
139} 135}
140 136
141static ssize_t w1_f29_read_status_control( 137static ssize_t status_control_read(struct file *filp, struct kobject *kobj,
142 struct file *filp, struct kobject *kobj, 138 struct bin_attribute *bin_attr, char *buf,
143 struct bin_attribute *bin_attr, 139 loff_t off, size_t count)
144 char *buf, loff_t off, size_t count)
145{ 140{
146 if (count != 1 || off != 0) 141 if (count != 1 || off != 0)
147 return -EFAULT; 142 return -EFAULT;
@@ -149,13 +144,9 @@ static ssize_t w1_f29_read_status_control(
149 W1_F29_REG_CONTROL_AND_STATUS, buf); 144 W1_F29_REG_CONTROL_AND_STATUS, buf);
150} 145}
151 146
152 147static ssize_t output_write(struct file *filp, struct kobject *kobj,
153 148 struct bin_attribute *bin_attr, char *buf,
154 149 loff_t off, size_t count)
155static ssize_t w1_f29_write_output(
156 struct file *filp, struct kobject *kobj,
157 struct bin_attribute *bin_attr,
158 char *buf, loff_t off, size_t count)
159{ 150{
160 struct w1_slave *sl = kobj_to_w1_slave(kobj); 151 struct w1_slave *sl = kobj_to_w1_slave(kobj);
161 u8 w1_buf[3]; 152 u8 w1_buf[3];
@@ -224,10 +215,9 @@ error:
224/** 215/**
225 * Writing to the activity file resets the activity latches. 216 * Writing to the activity file resets the activity latches.
226 */ 217 */
227static ssize_t w1_f29_write_activity( 218static ssize_t activity_write(struct file *filp, struct kobject *kobj,
228 struct file *filp, struct kobject *kobj, 219 struct bin_attribute *bin_attr, char *buf,
229 struct bin_attribute *bin_attr, 220 loff_t off, size_t count)
230 char *buf, loff_t off, size_t count)
231{ 221{
232 struct w1_slave *sl = kobj_to_w1_slave(kobj); 222 struct w1_slave *sl = kobj_to_w1_slave(kobj);
233 unsigned int retries = W1_F29_RETRIES; 223 unsigned int retries = W1_F29_RETRIES;
@@ -255,13 +245,9 @@ error:
255 return -EIO; 245 return -EIO;
256} 246}
257 247
258static ssize_t w1_f29_write_status_control( 248static ssize_t status_control_write(struct file *filp, struct kobject *kobj,
259 struct file *filp, 249 struct bin_attribute *bin_attr, char *buf,
260 struct kobject *kobj, 250 loff_t off, size_t count)
261 struct bin_attribute *bin_attr,
262 char *buf,
263 loff_t off,
264 size_t count)
265{ 251{
266 struct w1_slave *sl = kobj_to_w1_slave(kobj); 252 struct w1_slave *sl = kobj_to_w1_slave(kobj);
267 u8 w1_buf[4]; 253 u8 w1_buf[4];
@@ -330,91 +316,35 @@ out:
330 return res; 316 return res;
331} 317}
332 318
333static struct bin_attribute w1_f29_sysfs_bin_files[] = { 319static BIN_ATTR_RO(state, 1);
334 { 320static BIN_ATTR_RW(output, 1);
335 .attr = { 321static BIN_ATTR_RW(activity, 1);
336 .name = "state", 322static BIN_ATTR_RO(cond_search_mask, 1);
337 .mode = S_IRUGO, 323static BIN_ATTR_RO(cond_search_polarity, 1);
338 }, 324static BIN_ATTR_RW(status_control, 1);
339 .size = 1, 325
340 .read = w1_f29_read_state, 326static struct bin_attribute *w1_f29_bin_attrs[] = {
341 }, 327 &bin_attr_state,
342 { 328 &bin_attr_output,
343 .attr = { 329 &bin_attr_activity,
344 .name = "output", 330 &bin_attr_cond_search_mask,
345 .mode = S_IRUGO | S_IWUSR | S_IWGRP, 331 &bin_attr_cond_search_polarity,
346 }, 332 &bin_attr_status_control,
347 .size = 1, 333 NULL,
348 .read = w1_f29_read_output,
349 .write = w1_f29_write_output,
350 },
351 {
352 .attr = {
353 .name = "activity",
354 .mode = S_IRUGO,
355 },
356 .size = 1,
357 .read = w1_f29_read_activity,
358 .write = w1_f29_write_activity,
359 },
360 {
361 .attr = {
362 .name = "cond_search_mask",
363 .mode = S_IRUGO,
364 },
365 .size = 1,
366 .read = w1_f29_read_cond_search_mask,
367 },
368 {
369 .attr = {
370 .name = "cond_search_polarity",
371 .mode = S_IRUGO,
372 },
373 .size = 1,
374 .read = w1_f29_read_cond_search_polarity,
375 },
376 {
377 .attr = {
378 .name = "status_control",
379 .mode = S_IRUGO | S_IWUSR | S_IWGRP,
380 },
381 .size = 1,
382 .read = w1_f29_read_status_control,
383 .write = w1_f29_write_status_control,
384 }
385}; 334};
386 335
387static int w1_f29_add_slave(struct w1_slave *sl) 336static const struct attribute_group w1_f29_group = {
388{ 337 .bin_attrs = w1_f29_bin_attrs,
389 int err = 0; 338};
390 int i;
391
392 err = w1_f29_disable_test_mode(sl);
393 if (err)
394 return err;
395
396 for (i = 0; i < ARRAY_SIZE(w1_f29_sysfs_bin_files) && !err; ++i)
397 err = sysfs_create_bin_file(
398 &sl->dev.kobj,
399 &(w1_f29_sysfs_bin_files[i]));
400 if (err)
401 while (--i >= 0)
402 sysfs_remove_bin_file(&sl->dev.kobj,
403 &(w1_f29_sysfs_bin_files[i]));
404 return err;
405}
406 339
407static void w1_f29_remove_slave(struct w1_slave *sl) 340static const struct attribute_group *w1_f29_groups[] = {
408{ 341 &w1_f29_group,
409 int i; 342 NULL,
410 for (i = ARRAY_SIZE(w1_f29_sysfs_bin_files) - 1; i >= 0; --i) 343};
411 sysfs_remove_bin_file(&sl->dev.kobj,
412 &(w1_f29_sysfs_bin_files[i]));
413}
414 344
415static struct w1_family_ops w1_f29_fops = { 345static struct w1_family_ops w1_f29_fops = {
416 .add_slave = w1_f29_add_slave, 346 .add_slave = w1_f29_disable_test_mode,
417 .remove_slave = w1_f29_remove_slave, 347 .groups = w1_f29_groups,
418}; 348};
419 349
420static struct w1_family w1_family_29 = { 350static struct w1_family w1_family_29 = {