1 | // SPDX-License-Identifier: GPL-2.0-or-later |
2 | /* |
3 | * Hardware monitoring driver for Maxim MAX34440/MAX34441 |
4 | * |
5 | * Copyright (c) 2011 Ericsson AB. |
6 | * Copyright (c) 2012 Guenter Roeck |
7 | */ |
8 | |
9 | #include <linux/bitops.h> |
10 | #include <linux/kernel.h> |
11 | #include <linux/module.h> |
12 | #include <linux/init.h> |
13 | #include <linux/err.h> |
14 | #include <linux/i2c.h> |
15 | #include "pmbus.h" |
16 | |
17 | enum chips { max34440, max34441, max34446, max34451, max34460, max34461 }; |
18 | |
19 | #define MAX34440_MFR_VOUT_PEAK 0xd4 |
20 | #define MAX34440_MFR_IOUT_PEAK 0xd5 |
21 | #define MAX34440_MFR_TEMPERATURE_PEAK 0xd6 |
22 | #define MAX34440_MFR_VOUT_MIN 0xd7 |
23 | |
24 | #define MAX34446_MFR_POUT_PEAK 0xe0 |
25 | #define MAX34446_MFR_POUT_AVG 0xe1 |
26 | #define MAX34446_MFR_IOUT_AVG 0xe2 |
27 | #define MAX34446_MFR_TEMPERATURE_AVG 0xe3 |
28 | |
29 | #define MAX34440_STATUS_OC_WARN BIT(0) |
30 | #define MAX34440_STATUS_OC_FAULT BIT(1) |
31 | #define MAX34440_STATUS_OT_FAULT BIT(5) |
32 | #define MAX34440_STATUS_OT_WARN BIT(6) |
33 | |
34 | /* |
35 | * The whole max344* family have IOUT_OC_WARN_LIMIT and IOUT_OC_FAULT_LIMIT |
36 | * swapped from the standard pmbus spec addresses. |
37 | */ |
38 | #define MAX34440_IOUT_OC_WARN_LIMIT 0x46 |
39 | #define MAX34440_IOUT_OC_FAULT_LIMIT 0x4A |
40 | |
41 | #define MAX34451_MFR_CHANNEL_CONFIG 0xe4 |
42 | #define MAX34451_MFR_CHANNEL_CONFIG_SEL_MASK 0x3f |
43 | |
44 | struct max34440_data { |
45 | int id; |
46 | struct pmbus_driver_info info; |
47 | }; |
48 | |
49 | #define to_max34440_data(x) container_of(x, struct max34440_data, info) |
50 | |
51 | static const struct i2c_device_id max34440_id[]; |
52 | |
53 | static int max34440_read_word_data(struct i2c_client *client, int page, |
54 | int phase, int reg) |
55 | { |
56 | int ret; |
57 | const struct pmbus_driver_info *info = pmbus_get_driver_info(client); |
58 | const struct max34440_data *data = to_max34440_data(info); |
59 | |
60 | switch (reg) { |
61 | case PMBUS_IOUT_OC_FAULT_LIMIT: |
62 | ret = pmbus_read_word_data(client, page, phase, |
63 | MAX34440_IOUT_OC_FAULT_LIMIT); |
64 | break; |
65 | case PMBUS_IOUT_OC_WARN_LIMIT: |
66 | ret = pmbus_read_word_data(client, page, phase, |
67 | MAX34440_IOUT_OC_WARN_LIMIT); |
68 | break; |
69 | case PMBUS_VIRT_READ_VOUT_MIN: |
70 | ret = pmbus_read_word_data(client, page, phase, |
71 | MAX34440_MFR_VOUT_MIN); |
72 | break; |
73 | case PMBUS_VIRT_READ_VOUT_MAX: |
74 | ret = pmbus_read_word_data(client, page, phase, |
75 | MAX34440_MFR_VOUT_PEAK); |
76 | break; |
77 | case PMBUS_VIRT_READ_IOUT_AVG: |
78 | if (data->id != max34446 && data->id != max34451) |
79 | return -ENXIO; |
80 | ret = pmbus_read_word_data(client, page, phase, |
81 | MAX34446_MFR_IOUT_AVG); |
82 | break; |
83 | case PMBUS_VIRT_READ_IOUT_MAX: |
84 | ret = pmbus_read_word_data(client, page, phase, |
85 | MAX34440_MFR_IOUT_PEAK); |
86 | break; |
87 | case PMBUS_VIRT_READ_POUT_AVG: |
88 | if (data->id != max34446) |
89 | return -ENXIO; |
90 | ret = pmbus_read_word_data(client, page, phase, |
91 | MAX34446_MFR_POUT_AVG); |
92 | break; |
93 | case PMBUS_VIRT_READ_POUT_MAX: |
94 | if (data->id != max34446) |
95 | return -ENXIO; |
96 | ret = pmbus_read_word_data(client, page, phase, |
97 | MAX34446_MFR_POUT_PEAK); |
98 | break; |
99 | case PMBUS_VIRT_READ_TEMP_AVG: |
100 | if (data->id != max34446 && data->id != max34460 && |
101 | data->id != max34461) |
102 | return -ENXIO; |
103 | ret = pmbus_read_word_data(client, page, phase, |
104 | MAX34446_MFR_TEMPERATURE_AVG); |
105 | break; |
106 | case PMBUS_VIRT_READ_TEMP_MAX: |
107 | ret = pmbus_read_word_data(client, page, phase, |
108 | MAX34440_MFR_TEMPERATURE_PEAK); |
109 | break; |
110 | case PMBUS_VIRT_RESET_POUT_HISTORY: |
111 | if (data->id != max34446) |
112 | return -ENXIO; |
113 | ret = 0; |
114 | break; |
115 | case PMBUS_VIRT_RESET_VOUT_HISTORY: |
116 | case PMBUS_VIRT_RESET_IOUT_HISTORY: |
117 | case PMBUS_VIRT_RESET_TEMP_HISTORY: |
118 | ret = 0; |
119 | break; |
120 | default: |
121 | ret = -ENODATA; |
122 | break; |
123 | } |
124 | return ret; |
125 | } |
126 | |
127 | static int max34440_write_word_data(struct i2c_client *client, int page, |
128 | int reg, u16 word) |
129 | { |
130 | const struct pmbus_driver_info *info = pmbus_get_driver_info(client); |
131 | const struct max34440_data *data = to_max34440_data(info); |
132 | int ret; |
133 | |
134 | switch (reg) { |
135 | case PMBUS_IOUT_OC_FAULT_LIMIT: |
136 | ret = pmbus_write_word_data(client, page, MAX34440_IOUT_OC_FAULT_LIMIT, |
137 | word); |
138 | break; |
139 | case PMBUS_IOUT_OC_WARN_LIMIT: |
140 | ret = pmbus_write_word_data(client, page, MAX34440_IOUT_OC_WARN_LIMIT, |
141 | word); |
142 | break; |
143 | case PMBUS_VIRT_RESET_POUT_HISTORY: |
144 | ret = pmbus_write_word_data(client, page, |
145 | MAX34446_MFR_POUT_PEAK, word: 0); |
146 | if (ret) |
147 | break; |
148 | ret = pmbus_write_word_data(client, page, |
149 | MAX34446_MFR_POUT_AVG, word: 0); |
150 | break; |
151 | case PMBUS_VIRT_RESET_VOUT_HISTORY: |
152 | ret = pmbus_write_word_data(client, page, |
153 | MAX34440_MFR_VOUT_MIN, word: 0x7fff); |
154 | if (ret) |
155 | break; |
156 | ret = pmbus_write_word_data(client, page, |
157 | MAX34440_MFR_VOUT_PEAK, word: 0); |
158 | break; |
159 | case PMBUS_VIRT_RESET_IOUT_HISTORY: |
160 | ret = pmbus_write_word_data(client, page, |
161 | MAX34440_MFR_IOUT_PEAK, word: 0); |
162 | if (!ret && (data->id == max34446 || data->id == max34451)) |
163 | ret = pmbus_write_word_data(client, page, |
164 | MAX34446_MFR_IOUT_AVG, word: 0); |
165 | |
166 | break; |
167 | case PMBUS_VIRT_RESET_TEMP_HISTORY: |
168 | ret = pmbus_write_word_data(client, page, |
169 | MAX34440_MFR_TEMPERATURE_PEAK, |
170 | word: 0x8000); |
171 | if (!ret && data->id == max34446) |
172 | ret = pmbus_write_word_data(client, page, |
173 | MAX34446_MFR_TEMPERATURE_AVG, word: 0); |
174 | break; |
175 | default: |
176 | ret = -ENODATA; |
177 | break; |
178 | } |
179 | return ret; |
180 | } |
181 | |
182 | static int max34440_read_byte_data(struct i2c_client *client, int page, int reg) |
183 | { |
184 | int ret = 0; |
185 | int mfg_status; |
186 | |
187 | if (page >= 0) { |
188 | ret = pmbus_set_page(client, page, phase: 0xff); |
189 | if (ret < 0) |
190 | return ret; |
191 | } |
192 | |
193 | switch (reg) { |
194 | case PMBUS_STATUS_IOUT: |
195 | mfg_status = pmbus_read_word_data(client, page: 0, phase: 0xff, |
196 | reg: PMBUS_STATUS_MFR_SPECIFIC); |
197 | if (mfg_status < 0) |
198 | return mfg_status; |
199 | if (mfg_status & MAX34440_STATUS_OC_WARN) |
200 | ret |= PB_IOUT_OC_WARNING; |
201 | if (mfg_status & MAX34440_STATUS_OC_FAULT) |
202 | ret |= PB_IOUT_OC_FAULT; |
203 | break; |
204 | case PMBUS_STATUS_TEMPERATURE: |
205 | mfg_status = pmbus_read_word_data(client, page: 0, phase: 0xff, |
206 | reg: PMBUS_STATUS_MFR_SPECIFIC); |
207 | if (mfg_status < 0) |
208 | return mfg_status; |
209 | if (mfg_status & MAX34440_STATUS_OT_WARN) |
210 | ret |= PB_TEMP_OT_WARNING; |
211 | if (mfg_status & MAX34440_STATUS_OT_FAULT) |
212 | ret |= PB_TEMP_OT_FAULT; |
213 | break; |
214 | default: |
215 | ret = -ENODATA; |
216 | break; |
217 | } |
218 | return ret; |
219 | } |
220 | |
221 | static int max34451_set_supported_funcs(struct i2c_client *client, |
222 | struct max34440_data *data) |
223 | { |
224 | /* |
225 | * Each of the channel 0-15 can be configured to monitor the following |
226 | * functions based on MFR_CHANNEL_CONFIG[5:0] |
227 | * 0x10: Sequencing + voltage monitoring (only valid for PAGES 0–11) |
228 | * 0x20: Voltage monitoring (no sequencing) |
229 | * 0x21: Voltage read only |
230 | * 0x22: Current monitoring |
231 | * 0x23: Current read only |
232 | * 0x30: General-purpose input active low |
233 | * 0x34: General-purpose input active high |
234 | * 0x00: Disabled |
235 | */ |
236 | |
237 | int page, rv; |
238 | |
239 | for (page = 0; page < 16; page++) { |
240 | rv = i2c_smbus_write_byte_data(client, command: PMBUS_PAGE, value: page); |
241 | if (rv < 0) |
242 | return rv; |
243 | |
244 | rv = i2c_smbus_read_word_data(client, |
245 | MAX34451_MFR_CHANNEL_CONFIG); |
246 | if (rv < 0) |
247 | return rv; |
248 | |
249 | switch (rv & MAX34451_MFR_CHANNEL_CONFIG_SEL_MASK) { |
250 | case 0x10: |
251 | case 0x20: |
252 | data->info.func[page] = PMBUS_HAVE_VOUT | |
253 | PMBUS_HAVE_STATUS_VOUT; |
254 | break; |
255 | case 0x21: |
256 | data->info.func[page] = PMBUS_HAVE_VOUT; |
257 | break; |
258 | case 0x22: |
259 | data->info.func[page] = PMBUS_HAVE_IOUT | |
260 | PMBUS_HAVE_STATUS_IOUT; |
261 | break; |
262 | case 0x23: |
263 | data->info.func[page] = PMBUS_HAVE_IOUT; |
264 | break; |
265 | default: |
266 | break; |
267 | } |
268 | } |
269 | |
270 | return 0; |
271 | } |
272 | |
273 | static struct pmbus_driver_info max34440_info[] = { |
274 | [max34440] = { |
275 | .pages = 14, |
276 | .format[PSC_VOLTAGE_IN] = direct, |
277 | .format[PSC_VOLTAGE_OUT] = direct, |
278 | .format[PSC_TEMPERATURE] = direct, |
279 | .format[PSC_CURRENT_OUT] = direct, |
280 | .m[PSC_VOLTAGE_IN] = 1, |
281 | .b[PSC_VOLTAGE_IN] = 0, |
282 | .R[PSC_VOLTAGE_IN] = 3, /* R = 0 in datasheet reflects mV */ |
283 | .m[PSC_VOLTAGE_OUT] = 1, |
284 | .b[PSC_VOLTAGE_OUT] = 0, |
285 | .R[PSC_VOLTAGE_OUT] = 3, /* R = 0 in datasheet reflects mV */ |
286 | .m[PSC_CURRENT_OUT] = 1, |
287 | .b[PSC_CURRENT_OUT] = 0, |
288 | .R[PSC_CURRENT_OUT] = 3, /* R = 0 in datasheet reflects mA */ |
289 | .m[PSC_TEMPERATURE] = 1, |
290 | .b[PSC_TEMPERATURE] = 0, |
291 | .R[PSC_TEMPERATURE] = 2, |
292 | .func[0] = PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT |
293 | | PMBUS_HAVE_IOUT | PMBUS_HAVE_STATUS_IOUT, |
294 | .func[1] = PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT |
295 | | PMBUS_HAVE_IOUT | PMBUS_HAVE_STATUS_IOUT, |
296 | .func[2] = PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT |
297 | | PMBUS_HAVE_IOUT | PMBUS_HAVE_STATUS_IOUT, |
298 | .func[3] = PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT |
299 | | PMBUS_HAVE_IOUT | PMBUS_HAVE_STATUS_IOUT, |
300 | .func[4] = PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT |
301 | | PMBUS_HAVE_IOUT | PMBUS_HAVE_STATUS_IOUT, |
302 | .func[5] = PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT |
303 | | PMBUS_HAVE_IOUT | PMBUS_HAVE_STATUS_IOUT, |
304 | .func[6] = PMBUS_HAVE_TEMP | PMBUS_HAVE_STATUS_TEMP, |
305 | .func[7] = PMBUS_HAVE_TEMP | PMBUS_HAVE_STATUS_TEMP, |
306 | .func[8] = PMBUS_HAVE_TEMP | PMBUS_HAVE_STATUS_TEMP, |
307 | .func[9] = PMBUS_HAVE_TEMP | PMBUS_HAVE_STATUS_TEMP, |
308 | .func[10] = PMBUS_HAVE_TEMP | PMBUS_HAVE_STATUS_TEMP, |
309 | .func[11] = PMBUS_HAVE_TEMP | PMBUS_HAVE_STATUS_TEMP, |
310 | .func[12] = PMBUS_HAVE_TEMP | PMBUS_HAVE_STATUS_TEMP, |
311 | .func[13] = PMBUS_HAVE_TEMP | PMBUS_HAVE_STATUS_TEMP, |
312 | .read_byte_data = max34440_read_byte_data, |
313 | .read_word_data = max34440_read_word_data, |
314 | .write_word_data = max34440_write_word_data, |
315 | }, |
316 | [max34441] = { |
317 | .pages = 12, |
318 | .format[PSC_VOLTAGE_IN] = direct, |
319 | .format[PSC_VOLTAGE_OUT] = direct, |
320 | .format[PSC_TEMPERATURE] = direct, |
321 | .format[PSC_CURRENT_OUT] = direct, |
322 | .format[PSC_FAN] = direct, |
323 | .m[PSC_VOLTAGE_IN] = 1, |
324 | .b[PSC_VOLTAGE_IN] = 0, |
325 | .R[PSC_VOLTAGE_IN] = 3, |
326 | .m[PSC_VOLTAGE_OUT] = 1, |
327 | .b[PSC_VOLTAGE_OUT] = 0, |
328 | .R[PSC_VOLTAGE_OUT] = 3, |
329 | .m[PSC_CURRENT_OUT] = 1, |
330 | .b[PSC_CURRENT_OUT] = 0, |
331 | .R[PSC_CURRENT_OUT] = 3, |
332 | .m[PSC_TEMPERATURE] = 1, |
333 | .b[PSC_TEMPERATURE] = 0, |
334 | .R[PSC_TEMPERATURE] = 2, |
335 | .m[PSC_FAN] = 1, |
336 | .b[PSC_FAN] = 0, |
337 | .R[PSC_FAN] = 0, |
338 | .func[0] = PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT |
339 | | PMBUS_HAVE_IOUT | PMBUS_HAVE_STATUS_IOUT, |
340 | .func[1] = PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT |
341 | | PMBUS_HAVE_IOUT | PMBUS_HAVE_STATUS_IOUT, |
342 | .func[2] = PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT |
343 | | PMBUS_HAVE_IOUT | PMBUS_HAVE_STATUS_IOUT, |
344 | .func[3] = PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT |
345 | | PMBUS_HAVE_IOUT | PMBUS_HAVE_STATUS_IOUT, |
346 | .func[4] = PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT |
347 | | PMBUS_HAVE_IOUT | PMBUS_HAVE_STATUS_IOUT, |
348 | .func[5] = PMBUS_HAVE_FAN12 | PMBUS_HAVE_STATUS_FAN12, |
349 | .func[6] = PMBUS_HAVE_TEMP | PMBUS_HAVE_STATUS_TEMP, |
350 | .func[7] = PMBUS_HAVE_TEMP | PMBUS_HAVE_STATUS_TEMP, |
351 | .func[8] = PMBUS_HAVE_TEMP | PMBUS_HAVE_STATUS_TEMP, |
352 | .func[9] = PMBUS_HAVE_TEMP | PMBUS_HAVE_STATUS_TEMP, |
353 | .func[10] = PMBUS_HAVE_TEMP | PMBUS_HAVE_STATUS_TEMP, |
354 | .func[11] = PMBUS_HAVE_TEMP | PMBUS_HAVE_STATUS_TEMP, |
355 | .read_byte_data = max34440_read_byte_data, |
356 | .read_word_data = max34440_read_word_data, |
357 | .write_word_data = max34440_write_word_data, |
358 | }, |
359 | [max34446] = { |
360 | .pages = 7, |
361 | .format[PSC_VOLTAGE_IN] = direct, |
362 | .format[PSC_VOLTAGE_OUT] = direct, |
363 | .format[PSC_TEMPERATURE] = direct, |
364 | .format[PSC_CURRENT_OUT] = direct, |
365 | .format[PSC_POWER] = direct, |
366 | .m[PSC_VOLTAGE_IN] = 1, |
367 | .b[PSC_VOLTAGE_IN] = 0, |
368 | .R[PSC_VOLTAGE_IN] = 3, |
369 | .m[PSC_VOLTAGE_OUT] = 1, |
370 | .b[PSC_VOLTAGE_OUT] = 0, |
371 | .R[PSC_VOLTAGE_OUT] = 3, |
372 | .m[PSC_CURRENT_OUT] = 1, |
373 | .b[PSC_CURRENT_OUT] = 0, |
374 | .R[PSC_CURRENT_OUT] = 3, |
375 | .m[PSC_POWER] = 1, |
376 | .b[PSC_POWER] = 0, |
377 | .R[PSC_POWER] = 3, |
378 | .m[PSC_TEMPERATURE] = 1, |
379 | .b[PSC_TEMPERATURE] = 0, |
380 | .R[PSC_TEMPERATURE] = 2, |
381 | .func[0] = PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT |
382 | | PMBUS_HAVE_IOUT | PMBUS_HAVE_STATUS_IOUT | PMBUS_HAVE_POUT, |
383 | .func[1] = PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT |
384 | | PMBUS_HAVE_IOUT | PMBUS_HAVE_STATUS_IOUT, |
385 | .func[2] = PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT |
386 | | PMBUS_HAVE_IOUT | PMBUS_HAVE_STATUS_IOUT | PMBUS_HAVE_POUT, |
387 | .func[3] = PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT |
388 | | PMBUS_HAVE_IOUT | PMBUS_HAVE_STATUS_IOUT, |
389 | .func[4] = PMBUS_HAVE_TEMP | PMBUS_HAVE_STATUS_TEMP, |
390 | .func[5] = PMBUS_HAVE_TEMP | PMBUS_HAVE_STATUS_TEMP, |
391 | .func[6] = PMBUS_HAVE_TEMP | PMBUS_HAVE_STATUS_TEMP, |
392 | .read_byte_data = max34440_read_byte_data, |
393 | .read_word_data = max34440_read_word_data, |
394 | .write_word_data = max34440_write_word_data, |
395 | }, |
396 | [max34451] = { |
397 | .pages = 21, |
398 | .format[PSC_VOLTAGE_OUT] = direct, |
399 | .format[PSC_TEMPERATURE] = direct, |
400 | .format[PSC_CURRENT_OUT] = direct, |
401 | .m[PSC_VOLTAGE_OUT] = 1, |
402 | .b[PSC_VOLTAGE_OUT] = 0, |
403 | .R[PSC_VOLTAGE_OUT] = 3, |
404 | .m[PSC_CURRENT_OUT] = 1, |
405 | .b[PSC_CURRENT_OUT] = 0, |
406 | .R[PSC_CURRENT_OUT] = 2, |
407 | .m[PSC_TEMPERATURE] = 1, |
408 | .b[PSC_TEMPERATURE] = 0, |
409 | .R[PSC_TEMPERATURE] = 2, |
410 | /* func 0-15 is set dynamically before probing */ |
411 | .func[16] = PMBUS_HAVE_TEMP | PMBUS_HAVE_STATUS_TEMP, |
412 | .func[17] = PMBUS_HAVE_TEMP | PMBUS_HAVE_STATUS_TEMP, |
413 | .func[18] = PMBUS_HAVE_TEMP | PMBUS_HAVE_STATUS_TEMP, |
414 | .func[19] = PMBUS_HAVE_TEMP | PMBUS_HAVE_STATUS_TEMP, |
415 | .func[20] = PMBUS_HAVE_TEMP | PMBUS_HAVE_STATUS_TEMP, |
416 | .read_word_data = max34440_read_word_data, |
417 | .write_word_data = max34440_write_word_data, |
418 | }, |
419 | [max34460] = { |
420 | .pages = 18, |
421 | .format[PSC_VOLTAGE_OUT] = direct, |
422 | .format[PSC_TEMPERATURE] = direct, |
423 | .m[PSC_VOLTAGE_OUT] = 1, |
424 | .b[PSC_VOLTAGE_OUT] = 0, |
425 | .R[PSC_VOLTAGE_OUT] = 3, |
426 | .m[PSC_TEMPERATURE] = 1, |
427 | .b[PSC_TEMPERATURE] = 0, |
428 | .R[PSC_TEMPERATURE] = 2, |
429 | .func[0] = PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT, |
430 | .func[1] = PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT, |
431 | .func[2] = PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT, |
432 | .func[3] = PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT, |
433 | .func[4] = PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT, |
434 | .func[5] = PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT, |
435 | .func[6] = PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT, |
436 | .func[7] = PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT, |
437 | .func[8] = PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT, |
438 | .func[9] = PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT, |
439 | .func[10] = PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT, |
440 | .func[11] = PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT, |
441 | .func[13] = PMBUS_HAVE_TEMP | PMBUS_HAVE_STATUS_TEMP, |
442 | .func[14] = PMBUS_HAVE_TEMP | PMBUS_HAVE_STATUS_TEMP, |
443 | .func[15] = PMBUS_HAVE_TEMP | PMBUS_HAVE_STATUS_TEMP, |
444 | .func[16] = PMBUS_HAVE_TEMP | PMBUS_HAVE_STATUS_TEMP, |
445 | .func[17] = PMBUS_HAVE_TEMP | PMBUS_HAVE_STATUS_TEMP, |
446 | .read_word_data = max34440_read_word_data, |
447 | .write_word_data = max34440_write_word_data, |
448 | }, |
449 | [max34461] = { |
450 | .pages = 23, |
451 | .format[PSC_VOLTAGE_OUT] = direct, |
452 | .format[PSC_TEMPERATURE] = direct, |
453 | .m[PSC_VOLTAGE_OUT] = 1, |
454 | .b[PSC_VOLTAGE_OUT] = 0, |
455 | .R[PSC_VOLTAGE_OUT] = 3, |
456 | .m[PSC_TEMPERATURE] = 1, |
457 | .b[PSC_TEMPERATURE] = 0, |
458 | .R[PSC_TEMPERATURE] = 2, |
459 | .func[0] = PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT, |
460 | .func[1] = PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT, |
461 | .func[2] = PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT, |
462 | .func[3] = PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT, |
463 | .func[4] = PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT, |
464 | .func[5] = PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT, |
465 | .func[6] = PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT, |
466 | .func[7] = PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT, |
467 | .func[8] = PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT, |
468 | .func[9] = PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT, |
469 | .func[10] = PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT, |
470 | .func[11] = PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT, |
471 | .func[12] = PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT, |
472 | .func[13] = PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT, |
473 | .func[14] = PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT, |
474 | .func[15] = PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT, |
475 | /* page 16 is reserved */ |
476 | .func[17] = PMBUS_HAVE_TEMP | PMBUS_HAVE_STATUS_TEMP, |
477 | .func[18] = PMBUS_HAVE_TEMP | PMBUS_HAVE_STATUS_TEMP, |
478 | .func[19] = PMBUS_HAVE_TEMP | PMBUS_HAVE_STATUS_TEMP, |
479 | .func[20] = PMBUS_HAVE_TEMP | PMBUS_HAVE_STATUS_TEMP, |
480 | .func[21] = PMBUS_HAVE_TEMP | PMBUS_HAVE_STATUS_TEMP, |
481 | .read_word_data = max34440_read_word_data, |
482 | .write_word_data = max34440_write_word_data, |
483 | }, |
484 | }; |
485 | |
486 | static int max34440_probe(struct i2c_client *client) |
487 | { |
488 | struct max34440_data *data; |
489 | int rv; |
490 | |
491 | data = devm_kzalloc(dev: &client->dev, size: sizeof(struct max34440_data), |
492 | GFP_KERNEL); |
493 | if (!data) |
494 | return -ENOMEM; |
495 | data->id = i2c_match_id(id: max34440_id, client)->driver_data; |
496 | data->info = max34440_info[data->id]; |
497 | |
498 | if (data->id == max34451) { |
499 | rv = max34451_set_supported_funcs(client, data); |
500 | if (rv) |
501 | return rv; |
502 | } |
503 | |
504 | return pmbus_do_probe(client, info: &data->info); |
505 | } |
506 | |
507 | static const struct i2c_device_id max34440_id[] = { |
508 | {"max34440" , max34440}, |
509 | {"max34441" , max34441}, |
510 | {"max34446" , max34446}, |
511 | {"max34451" , max34451}, |
512 | {"max34460" , max34460}, |
513 | {"max34461" , max34461}, |
514 | {} |
515 | }; |
516 | MODULE_DEVICE_TABLE(i2c, max34440_id); |
517 | |
518 | /* This is the driver that will be inserted */ |
519 | static struct i2c_driver max34440_driver = { |
520 | .driver = { |
521 | .name = "max34440" , |
522 | }, |
523 | .probe = max34440_probe, |
524 | .id_table = max34440_id, |
525 | }; |
526 | |
527 | module_i2c_driver(max34440_driver); |
528 | |
529 | MODULE_AUTHOR("Guenter Roeck" ); |
530 | MODULE_DESCRIPTION("PMBus driver for Maxim MAX34440/MAX34441" ); |
531 | MODULE_LICENSE("GPL" ); |
532 | MODULE_IMPORT_NS(PMBUS); |
533 | |