adt7475.c 52 KB

123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144145146147148149150151152153154155156157158159160161162163164165166167168169170171172173174175176177178179180181182183184185186187188189190191192193194195196197198199200201202203204205206207208209210211212213214215216217218219220221222223224225226227228229230231232233234235236237238239240241242243244245246247248249250251252253254255256257258259260261262263264265266267268269270271272273274275276277278279280281282283284285286287288289290291292293294295296297298299300301302303304305306307308309310311312313314315316317318319320321322323324325326327328329330331332333334335336337338339340341342343344345346347348349350351352353354355356357358359360361362363364365366367368369370371372373374375376377378379380381382383384385386387388389390391392393394395396397398399400401402403404405406407408409410411412413414415416417418419420421422423424425426427428429430431432433434435436437438439440441442443444445446447448449450451452453454455456457458459460461462463464465466467468469470471472473474475476477478479480481482483484485486487488489490491492493494495496497498499500501502503504505506507508509510511512513514515516517518519520521522523524525526527528529530531532533534535536537538539540541542543544545546547548549550551552553554555556557558559560561562563564565566567568569570571572573574575576577578579580581582583584585586587588589590591592593594595596597598599600601602603604605606607608609610611612613614615616617618619620621622623624625626627628629630631632633634635636637638639640641642643644645646647648649650651652653654655656657658659660661662663664665666667668669670671672673674675676677678679680681682683684685686687688689690691692693694695696697698699700701702703704705706707708709710711712713714715716717718719720721722723724725726727728729730731732733734735736737738739740741742743744745746747748749750751752753754755756757758759760761762763764765766767768769770771772773774775776777778779780781782783784785786787788789790791792793794795796797798799800801802803804805806807808809810811812813814815816817818819820821822823824825826827828829830831832833834835836837838839840841842843844845846847848849850851852853854855856857858859860861862863864865866867868869870871872873874875876877878879880881882883884885886887888889890891892893894895896897898899900901902903904905906907908909910911912913914915916917918919920921922923924925926927928929930931932933934935936937938939940941942943944945946947948949950951952953954955956957958959960961962963964965966967968969970971972973974975976977978979980981982983984985986987988989990991992993994995996997998999100010011002100310041005100610071008100910101011101210131014101510161017101810191020102110221023102410251026102710281029103010311032103310341035103610371038103910401041104210431044104510461047104810491050105110521053105410551056105710581059106010611062106310641065106610671068106910701071107210731074107510761077107810791080108110821083108410851086108710881089109010911092109310941095109610971098109911001101110211031104110511061107110811091110111111121113111411151116111711181119112011211122112311241125112611271128112911301131113211331134113511361137113811391140114111421143114411451146114711481149115011511152115311541155115611571158115911601161116211631164116511661167116811691170117111721173117411751176117711781179118011811182118311841185118611871188118911901191119211931194119511961197119811991200120112021203120412051206120712081209121012111212121312141215121612171218121912201221122212231224122512261227122812291230123112321233123412351236123712381239124012411242124312441245124612471248124912501251125212531254125512561257125812591260126112621263126412651266126712681269127012711272127312741275127612771278127912801281128212831284128512861287128812891290129112921293129412951296129712981299130013011302130313041305130613071308130913101311131213131314131513161317131813191320132113221323132413251326132713281329133013311332133313341335133613371338133913401341134213431344134513461347134813491350135113521353135413551356135713581359136013611362136313641365136613671368136913701371137213731374137513761377137813791380138113821383138413851386138713881389139013911392139313941395139613971398139914001401140214031404140514061407140814091410141114121413141414151416141714181419142014211422142314241425142614271428142914301431143214331434143514361437143814391440144114421443144414451446144714481449145014511452145314541455145614571458145914601461146214631464146514661467146814691470147114721473147414751476147714781479148014811482148314841485148614871488148914901491149214931494149514961497149814991500150115021503150415051506150715081509151015111512151315141515151615171518151915201521152215231524152515261527152815291530153115321533153415351536153715381539154015411542154315441545154615471548154915501551155215531554155515561557155815591560156115621563156415651566156715681569157015711572157315741575157615771578157915801581158215831584158515861587158815891590159115921593159415951596159715981599160016011602160316041605160616071608160916101611161216131614161516161617161816191620162116221623162416251626162716281629163016311632163316341635163616371638163916401641164216431644164516461647164816491650165116521653165416551656165716581659166016611662166316641665166616671668166916701671167216731674167516761677167816791680168116821683168416851686168716881689169016911692169316941695169616971698169917001701170217031704170517061707170817091710171117121713171417151716171717181719172017211722172317241725172617271728172917301731173217331734173517361737173817391740174117421743174417451746174717481749175017511752175317541755175617571758175917601761176217631764176517661767176817691770177117721773177417751776177717781779178017811782178317841785178617871788178917901791179217931794179517961797179817991800180118021803180418051806180718081809181018111812181318141815181618171818181918201821182218231824182518261827182818291830183118321833183418351836183718381839184018411842184318441845184618471848184918501851185218531854185518561857185818591860186118621863186418651866186718681869187018711872187318741875187618771878187918801881188218831884188518861887188818891890189118921893189418951896189718981899190019011902190319041905190619071908190919101911191219131914191519161917191819191920192119221923192419251926192719281929193019311932193319341935193619371938193919401941194219431944194519461947194819491950195119521953195419551956195719581959196019611962196319641965196619671968196919701971197219731974197519761977197819791980198119821983198419851986198719881989199019911992199319941995199619971998199920002001200220032004200520062007200820092010201120122013201420152016201720182019202020212022
  1. // SPDX-License-Identifier: GPL-2.0-only
  2. /*
  3. * adt7475 - Thermal sensor driver for the ADT7475 chip and derivatives
  4. * Copyright (C) 2007-2008, Advanced Micro Devices, Inc.
  5. * Copyright (C) 2008 Jordan Crouse <[email protected]>
  6. * Copyright (C) 2008 Hans de Goede <[email protected]>
  7. * Copyright (C) 2009 Jean Delvare <[email protected]>
  8. *
  9. * Derived from the lm83 driver by Jean Delvare
  10. */
  11. #include <linux/module.h>
  12. #include <linux/of_device.h>
  13. #include <linux/init.h>
  14. #include <linux/slab.h>
  15. #include <linux/i2c.h>
  16. #include <linux/hwmon.h>
  17. #include <linux/hwmon-sysfs.h>
  18. #include <linux/hwmon-vid.h>
  19. #include <linux/err.h>
  20. #include <linux/jiffies.h>
  21. #include <linux/of.h>
  22. #include <linux/util_macros.h>
  23. /* Indexes for the sysfs hooks */
  24. #define INPUT 0
  25. #define MIN 1
  26. #define MAX 2
  27. #define CONTROL 3
  28. #define OFFSET 3
  29. #define AUTOMIN 4
  30. #define THERM 5
  31. #define HYSTERSIS 6
  32. /*
  33. * These are unique identifiers for the sysfs functions - unlike the
  34. * numbers above, these are not also indexes into an array
  35. */
  36. #define ALARM 9
  37. #define FAULT 10
  38. /* 7475 Common Registers */
  39. #define REG_DEVREV2 0x12 /* ADT7490 only */
  40. #define REG_VTT 0x1E /* ADT7490 only */
  41. #define REG_EXTEND3 0x1F /* ADT7490 only */
  42. #define REG_VOLTAGE_BASE 0x20
  43. #define REG_TEMP_BASE 0x25
  44. #define REG_TACH_BASE 0x28
  45. #define REG_PWM_BASE 0x30
  46. #define REG_PWM_MAX_BASE 0x38
  47. #define REG_DEVID 0x3D
  48. #define REG_VENDID 0x3E
  49. #define REG_DEVID2 0x3F
  50. #define REG_CONFIG1 0x40
  51. #define REG_STATUS1 0x41
  52. #define REG_STATUS2 0x42
  53. #define REG_VID 0x43 /* ADT7476 only */
  54. #define REG_VOLTAGE_MIN_BASE 0x44
  55. #define REG_VOLTAGE_MAX_BASE 0x45
  56. #define REG_TEMP_MIN_BASE 0x4E
  57. #define REG_TEMP_MAX_BASE 0x4F
  58. #define REG_TACH_MIN_BASE 0x54
  59. #define REG_PWM_CONFIG_BASE 0x5C
  60. #define REG_TEMP_TRANGE_BASE 0x5F
  61. #define REG_ENHANCE_ACOUSTICS1 0x62
  62. #define REG_ENHANCE_ACOUSTICS2 0x63
  63. #define REG_PWM_MIN_BASE 0x64
  64. #define REG_TEMP_TMIN_BASE 0x67
  65. #define REG_TEMP_THERM_BASE 0x6A
  66. #define REG_REMOTE1_HYSTERSIS 0x6D
  67. #define REG_REMOTE2_HYSTERSIS 0x6E
  68. #define REG_TEMP_OFFSET_BASE 0x70
  69. #define REG_CONFIG2 0x73
  70. #define REG_EXTEND1 0x76
  71. #define REG_EXTEND2 0x77
  72. #define REG_CONFIG3 0x78
  73. #define REG_CONFIG5 0x7C
  74. #define REG_CONFIG4 0x7D
  75. #define REG_STATUS4 0x81 /* ADT7490 only */
  76. #define REG_VTT_MIN 0x84 /* ADT7490 only */
  77. #define REG_VTT_MAX 0x86 /* ADT7490 only */
  78. #define VID_VIDSEL 0x80 /* ADT7476 only */
  79. #define CONFIG2_ATTN 0x20
  80. #define CONFIG3_SMBALERT 0x01
  81. #define CONFIG3_THERM 0x02
  82. #define CONFIG4_PINFUNC 0x03
  83. #define CONFIG4_THERM 0x01
  84. #define CONFIG4_SMBALERT 0x02
  85. #define CONFIG4_MAXDUTY 0x08
  86. #define CONFIG4_ATTN_IN10 0x30
  87. #define CONFIG4_ATTN_IN43 0xC0
  88. #define CONFIG5_TWOSCOMP 0x01
  89. #define CONFIG5_TEMPOFFSET 0x02
  90. #define CONFIG5_VIDGPIO 0x10 /* ADT7476 only */
  91. /* ADT7475 Settings */
  92. #define ADT7475_VOLTAGE_COUNT 5 /* Not counting Vtt */
  93. #define ADT7475_TEMP_COUNT 3
  94. #define ADT7475_TACH_COUNT 4
  95. #define ADT7475_PWM_COUNT 3
  96. /* Macro to read the registers */
  97. #define adt7475_read(reg) i2c_smbus_read_byte_data(client, (reg))
  98. /* Macros to easily index the registers */
  99. #define TACH_REG(idx) (REG_TACH_BASE + ((idx) * 2))
  100. #define TACH_MIN_REG(idx) (REG_TACH_MIN_BASE + ((idx) * 2))
  101. #define PWM_REG(idx) (REG_PWM_BASE + (idx))
  102. #define PWM_MAX_REG(idx) (REG_PWM_MAX_BASE + (idx))
  103. #define PWM_MIN_REG(idx) (REG_PWM_MIN_BASE + (idx))
  104. #define PWM_CONFIG_REG(idx) (REG_PWM_CONFIG_BASE + (idx))
  105. #define VOLTAGE_REG(idx) (REG_VOLTAGE_BASE + (idx))
  106. #define VOLTAGE_MIN_REG(idx) (REG_VOLTAGE_MIN_BASE + ((idx) * 2))
  107. #define VOLTAGE_MAX_REG(idx) (REG_VOLTAGE_MAX_BASE + ((idx) * 2))
  108. #define TEMP_REG(idx) (REG_TEMP_BASE + (idx))
  109. #define TEMP_MIN_REG(idx) (REG_TEMP_MIN_BASE + ((idx) * 2))
  110. #define TEMP_MAX_REG(idx) (REG_TEMP_MAX_BASE + ((idx) * 2))
  111. #define TEMP_TMIN_REG(idx) (REG_TEMP_TMIN_BASE + (idx))
  112. #define TEMP_THERM_REG(idx) (REG_TEMP_THERM_BASE + (idx))
  113. #define TEMP_OFFSET_REG(idx) (REG_TEMP_OFFSET_BASE + (idx))
  114. #define TEMP_TRANGE_REG(idx) (REG_TEMP_TRANGE_BASE + (idx))
  115. static const unsigned short normal_i2c[] = { 0x2c, 0x2d, 0x2e, I2C_CLIENT_END };
  116. enum chips { adt7473, adt7475, adt7476, adt7490 };
  117. static const struct i2c_device_id adt7475_id[] = {
  118. { "adt7473", adt7473 },
  119. { "adt7475", adt7475 },
  120. { "adt7476", adt7476 },
  121. { "adt7490", adt7490 },
  122. { }
  123. };
  124. MODULE_DEVICE_TABLE(i2c, adt7475_id);
  125. static const struct of_device_id __maybe_unused adt7475_of_match[] = {
  126. {
  127. .compatible = "adi,adt7473",
  128. .data = (void *)adt7473
  129. },
  130. {
  131. .compatible = "adi,adt7475",
  132. .data = (void *)adt7475
  133. },
  134. {
  135. .compatible = "adi,adt7476",
  136. .data = (void *)adt7476
  137. },
  138. {
  139. .compatible = "adi,adt7490",
  140. .data = (void *)adt7490
  141. },
  142. { },
  143. };
  144. MODULE_DEVICE_TABLE(of, adt7475_of_match);
  145. struct adt7475_data {
  146. struct i2c_client *client;
  147. struct mutex lock;
  148. unsigned long measure_updated;
  149. bool valid;
  150. u8 config2;
  151. u8 config4;
  152. u8 config5;
  153. u8 has_voltage;
  154. u8 bypass_attn; /* Bypass voltage attenuator */
  155. u8 has_pwm2:1;
  156. u8 has_fan4:1;
  157. u8 has_vid:1;
  158. u32 alarms;
  159. u16 voltage[3][6];
  160. u16 temp[7][3];
  161. u16 tach[2][4];
  162. u8 pwm[4][3];
  163. u8 range[3];
  164. u8 pwmctl[3];
  165. u8 pwmchan[3];
  166. u8 enh_acoustics[2];
  167. u8 vid;
  168. u8 vrm;
  169. const struct attribute_group *groups[9];
  170. };
  171. static struct i2c_driver adt7475_driver;
  172. static struct adt7475_data *adt7475_update_device(struct device *dev);
  173. static void adt7475_read_hystersis(struct i2c_client *client);
  174. static void adt7475_read_pwm(struct i2c_client *client, int index);
  175. /* Given a temp value, convert it to register value */
  176. static inline u16 temp2reg(struct adt7475_data *data, long val)
  177. {
  178. u16 ret;
  179. if (!(data->config5 & CONFIG5_TWOSCOMP)) {
  180. val = clamp_val(val, -64000, 191000);
  181. ret = (val + 64500) / 1000;
  182. } else {
  183. val = clamp_val(val, -128000, 127000);
  184. if (val < -500)
  185. ret = (256500 + val) / 1000;
  186. else
  187. ret = (val + 500) / 1000;
  188. }
  189. return ret << 2;
  190. }
  191. /* Given a register value, convert it to a real temp value */
  192. static inline int reg2temp(struct adt7475_data *data, u16 reg)
  193. {
  194. if (data->config5 & CONFIG5_TWOSCOMP) {
  195. if (reg >= 512)
  196. return (reg - 1024) * 250;
  197. else
  198. return reg * 250;
  199. } else
  200. return (reg - 256) * 250;
  201. }
  202. static inline int tach2rpm(u16 tach)
  203. {
  204. if (tach == 0 || tach == 0xFFFF)
  205. return 0;
  206. return (90000 * 60) / tach;
  207. }
  208. static inline u16 rpm2tach(unsigned long rpm)
  209. {
  210. if (rpm == 0)
  211. return 0;
  212. return clamp_val((90000 * 60) / rpm, 1, 0xFFFF);
  213. }
  214. /* Scaling factors for voltage inputs, taken from the ADT7490 datasheet */
  215. static const int adt7473_in_scaling[ADT7475_VOLTAGE_COUNT + 1][2] = {
  216. { 45, 94 }, /* +2.5V */
  217. { 175, 525 }, /* Vccp */
  218. { 68, 71 }, /* Vcc */
  219. { 93, 47 }, /* +5V */
  220. { 120, 20 }, /* +12V */
  221. { 45, 45 }, /* Vtt */
  222. };
  223. static inline int reg2volt(int channel, u16 reg, u8 bypass_attn)
  224. {
  225. const int *r = adt7473_in_scaling[channel];
  226. if (bypass_attn & (1 << channel))
  227. return DIV_ROUND_CLOSEST(reg * 2250, 1024);
  228. return DIV_ROUND_CLOSEST(reg * (r[0] + r[1]) * 2250, r[1] * 1024);
  229. }
  230. static inline u16 volt2reg(int channel, long volt, u8 bypass_attn)
  231. {
  232. const int *r = adt7473_in_scaling[channel];
  233. long reg;
  234. if (bypass_attn & (1 << channel))
  235. reg = DIV_ROUND_CLOSEST(volt * 1024, 2250);
  236. else
  237. reg = DIV_ROUND_CLOSEST(volt * r[1] * 1024,
  238. (r[0] + r[1]) * 2250);
  239. return clamp_val(reg, 0, 1023) & (0xff << 2);
  240. }
  241. static int adt7475_read_word(struct i2c_client *client, int reg)
  242. {
  243. int val1, val2;
  244. val1 = i2c_smbus_read_byte_data(client, reg);
  245. if (val1 < 0)
  246. return val1;
  247. val2 = i2c_smbus_read_byte_data(client, reg + 1);
  248. if (val2 < 0)
  249. return val2;
  250. return val1 | (val2 << 8);
  251. }
  252. static void adt7475_write_word(struct i2c_client *client, int reg, u16 val)
  253. {
  254. i2c_smbus_write_byte_data(client, reg + 1, val >> 8);
  255. i2c_smbus_write_byte_data(client, reg, val & 0xFF);
  256. }
  257. static ssize_t voltage_show(struct device *dev, struct device_attribute *attr,
  258. char *buf)
  259. {
  260. struct adt7475_data *data = adt7475_update_device(dev);
  261. struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
  262. unsigned short val;
  263. if (IS_ERR(data))
  264. return PTR_ERR(data);
  265. switch (sattr->nr) {
  266. case ALARM:
  267. return sprintf(buf, "%d\n",
  268. (data->alarms >> sattr->index) & 1);
  269. default:
  270. val = data->voltage[sattr->nr][sattr->index];
  271. return sprintf(buf, "%d\n",
  272. reg2volt(sattr->index, val, data->bypass_attn));
  273. }
  274. }
  275. static ssize_t voltage_store(struct device *dev,
  276. struct device_attribute *attr, const char *buf,
  277. size_t count)
  278. {
  279. struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
  280. struct adt7475_data *data = dev_get_drvdata(dev);
  281. struct i2c_client *client = data->client;
  282. unsigned char reg;
  283. long val;
  284. if (kstrtol(buf, 10, &val))
  285. return -EINVAL;
  286. mutex_lock(&data->lock);
  287. data->voltage[sattr->nr][sattr->index] =
  288. volt2reg(sattr->index, val, data->bypass_attn);
  289. if (sattr->index < ADT7475_VOLTAGE_COUNT) {
  290. if (sattr->nr == MIN)
  291. reg = VOLTAGE_MIN_REG(sattr->index);
  292. else
  293. reg = VOLTAGE_MAX_REG(sattr->index);
  294. } else {
  295. if (sattr->nr == MIN)
  296. reg = REG_VTT_MIN;
  297. else
  298. reg = REG_VTT_MAX;
  299. }
  300. i2c_smbus_write_byte_data(client, reg,
  301. data->voltage[sattr->nr][sattr->index] >> 2);
  302. mutex_unlock(&data->lock);
  303. return count;
  304. }
  305. static ssize_t temp_show(struct device *dev, struct device_attribute *attr,
  306. char *buf)
  307. {
  308. struct adt7475_data *data = adt7475_update_device(dev);
  309. struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
  310. int out;
  311. if (IS_ERR(data))
  312. return PTR_ERR(data);
  313. switch (sattr->nr) {
  314. case HYSTERSIS:
  315. mutex_lock(&data->lock);
  316. out = data->temp[sattr->nr][sattr->index];
  317. if (sattr->index != 1)
  318. out = (out >> 4) & 0xF;
  319. else
  320. out = (out & 0xF);
  321. /*
  322. * Show the value as an absolute number tied to
  323. * THERM
  324. */
  325. out = reg2temp(data, data->temp[THERM][sattr->index]) -
  326. out * 1000;
  327. mutex_unlock(&data->lock);
  328. break;
  329. case OFFSET:
  330. /*
  331. * Offset is always 2's complement, regardless of the
  332. * setting in CONFIG5
  333. */
  334. mutex_lock(&data->lock);
  335. out = (s8)data->temp[sattr->nr][sattr->index];
  336. if (data->config5 & CONFIG5_TEMPOFFSET)
  337. out *= 1000;
  338. else
  339. out *= 500;
  340. mutex_unlock(&data->lock);
  341. break;
  342. case ALARM:
  343. out = (data->alarms >> (sattr->index + 4)) & 1;
  344. break;
  345. case FAULT:
  346. /* Note - only for remote1 and remote2 */
  347. out = !!(data->alarms & (sattr->index ? 0x8000 : 0x4000));
  348. break;
  349. default:
  350. /* All other temp values are in the configured format */
  351. out = reg2temp(data, data->temp[sattr->nr][sattr->index]);
  352. }
  353. return sprintf(buf, "%d\n", out);
  354. }
  355. static ssize_t temp_store(struct device *dev, struct device_attribute *attr,
  356. const char *buf, size_t count)
  357. {
  358. struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
  359. struct adt7475_data *data = dev_get_drvdata(dev);
  360. struct i2c_client *client = data->client;
  361. unsigned char reg = 0;
  362. u8 out;
  363. int temp;
  364. long val;
  365. if (kstrtol(buf, 10, &val))
  366. return -EINVAL;
  367. mutex_lock(&data->lock);
  368. /* We need the config register in all cases for temp <-> reg conv. */
  369. data->config5 = adt7475_read(REG_CONFIG5);
  370. switch (sattr->nr) {
  371. case OFFSET:
  372. if (data->config5 & CONFIG5_TEMPOFFSET) {
  373. val = clamp_val(val, -63000, 127000);
  374. out = data->temp[OFFSET][sattr->index] = val / 1000;
  375. } else {
  376. val = clamp_val(val, -63000, 64000);
  377. out = data->temp[OFFSET][sattr->index] = val / 500;
  378. }
  379. break;
  380. case HYSTERSIS:
  381. /*
  382. * The value will be given as an absolute value, turn it
  383. * into an offset based on THERM
  384. */
  385. /* Read fresh THERM and HYSTERSIS values from the chip */
  386. data->temp[THERM][sattr->index] =
  387. adt7475_read(TEMP_THERM_REG(sattr->index)) << 2;
  388. adt7475_read_hystersis(client);
  389. temp = reg2temp(data, data->temp[THERM][sattr->index]);
  390. val = clamp_val(val, temp - 15000, temp);
  391. val = (temp - val) / 1000;
  392. if (sattr->index != 1) {
  393. data->temp[HYSTERSIS][sattr->index] &= 0x0F;
  394. data->temp[HYSTERSIS][sattr->index] |= (val & 0xF) << 4;
  395. } else {
  396. data->temp[HYSTERSIS][sattr->index] &= 0xF0;
  397. data->temp[HYSTERSIS][sattr->index] |= (val & 0xF);
  398. }
  399. out = data->temp[HYSTERSIS][sattr->index];
  400. break;
  401. default:
  402. data->temp[sattr->nr][sattr->index] = temp2reg(data, val);
  403. /*
  404. * We maintain an extra 2 digits of precision for simplicity
  405. * - shift those back off before writing the value
  406. */
  407. out = (u8) (data->temp[sattr->nr][sattr->index] >> 2);
  408. }
  409. switch (sattr->nr) {
  410. case MIN:
  411. reg = TEMP_MIN_REG(sattr->index);
  412. break;
  413. case MAX:
  414. reg = TEMP_MAX_REG(sattr->index);
  415. break;
  416. case OFFSET:
  417. reg = TEMP_OFFSET_REG(sattr->index);
  418. break;
  419. case AUTOMIN:
  420. reg = TEMP_TMIN_REG(sattr->index);
  421. break;
  422. case THERM:
  423. reg = TEMP_THERM_REG(sattr->index);
  424. break;
  425. case HYSTERSIS:
  426. if (sattr->index != 2)
  427. reg = REG_REMOTE1_HYSTERSIS;
  428. else
  429. reg = REG_REMOTE2_HYSTERSIS;
  430. break;
  431. }
  432. i2c_smbus_write_byte_data(client, reg, out);
  433. mutex_unlock(&data->lock);
  434. return count;
  435. }
  436. /* Assuming CONFIG6[SLOW] is 0 */
  437. static const int ad7475_st_map[] = {
  438. 37500, 18800, 12500, 7500, 4700, 3100, 1600, 800,
  439. };
  440. static ssize_t temp_st_show(struct device *dev, struct device_attribute *attr,
  441. char *buf)
  442. {
  443. struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
  444. struct adt7475_data *data = dev_get_drvdata(dev);
  445. long val;
  446. switch (sattr->index) {
  447. case 0:
  448. val = data->enh_acoustics[0] & 0xf;
  449. break;
  450. case 1:
  451. val = data->enh_acoustics[1] & 0xf;
  452. break;
  453. case 2:
  454. default:
  455. val = (data->enh_acoustics[1] >> 4) & 0xf;
  456. break;
  457. }
  458. if (val & 0x8)
  459. return sprintf(buf, "%d\n", ad7475_st_map[val & 0x7]);
  460. else
  461. return sprintf(buf, "0\n");
  462. }
  463. static ssize_t temp_st_store(struct device *dev,
  464. struct device_attribute *attr, const char *buf,
  465. size_t count)
  466. {
  467. struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
  468. struct adt7475_data *data = dev_get_drvdata(dev);
  469. struct i2c_client *client = data->client;
  470. unsigned char reg;
  471. int shift, idx;
  472. ulong val;
  473. if (kstrtoul(buf, 10, &val))
  474. return -EINVAL;
  475. switch (sattr->index) {
  476. case 0:
  477. reg = REG_ENHANCE_ACOUSTICS1;
  478. shift = 0;
  479. idx = 0;
  480. break;
  481. case 1:
  482. reg = REG_ENHANCE_ACOUSTICS2;
  483. shift = 0;
  484. idx = 1;
  485. break;
  486. case 2:
  487. default:
  488. reg = REG_ENHANCE_ACOUSTICS2;
  489. shift = 4;
  490. idx = 1;
  491. break;
  492. }
  493. if (val > 0) {
  494. val = find_closest_descending(val, ad7475_st_map,
  495. ARRAY_SIZE(ad7475_st_map));
  496. val |= 0x8;
  497. }
  498. mutex_lock(&data->lock);
  499. data->enh_acoustics[idx] &= ~(0xf << shift);
  500. data->enh_acoustics[idx] |= (val << shift);
  501. i2c_smbus_write_byte_data(client, reg, data->enh_acoustics[idx]);
  502. mutex_unlock(&data->lock);
  503. return count;
  504. }
  505. /*
  506. * Table of autorange values - the user will write the value in millidegrees,
  507. * and we'll convert it
  508. */
  509. static const int autorange_table[] = {
  510. 2000, 2500, 3330, 4000, 5000, 6670, 8000,
  511. 10000, 13330, 16000, 20000, 26670, 32000, 40000,
  512. 53330, 80000
  513. };
  514. static ssize_t point2_show(struct device *dev, struct device_attribute *attr,
  515. char *buf)
  516. {
  517. struct adt7475_data *data = adt7475_update_device(dev);
  518. struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
  519. int out, val;
  520. if (IS_ERR(data))
  521. return PTR_ERR(data);
  522. mutex_lock(&data->lock);
  523. out = (data->range[sattr->index] >> 4) & 0x0F;
  524. val = reg2temp(data, data->temp[AUTOMIN][sattr->index]);
  525. mutex_unlock(&data->lock);
  526. return sprintf(buf, "%d\n", val + autorange_table[out]);
  527. }
  528. static ssize_t point2_store(struct device *dev, struct device_attribute *attr,
  529. const char *buf, size_t count)
  530. {
  531. struct adt7475_data *data = dev_get_drvdata(dev);
  532. struct i2c_client *client = data->client;
  533. struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
  534. int temp;
  535. long val;
  536. if (kstrtol(buf, 10, &val))
  537. return -EINVAL;
  538. mutex_lock(&data->lock);
  539. /* Get a fresh copy of the needed registers */
  540. data->config5 = adt7475_read(REG_CONFIG5);
  541. data->temp[AUTOMIN][sattr->index] =
  542. adt7475_read(TEMP_TMIN_REG(sattr->index)) << 2;
  543. data->range[sattr->index] =
  544. adt7475_read(TEMP_TRANGE_REG(sattr->index));
  545. /*
  546. * The user will write an absolute value, so subtract the start point
  547. * to figure the range
  548. */
  549. temp = reg2temp(data, data->temp[AUTOMIN][sattr->index]);
  550. val = clamp_val(val, temp + autorange_table[0],
  551. temp + autorange_table[ARRAY_SIZE(autorange_table) - 1]);
  552. val -= temp;
  553. /* Find the nearest table entry to what the user wrote */
  554. val = find_closest(val, autorange_table, ARRAY_SIZE(autorange_table));
  555. data->range[sattr->index] &= ~0xF0;
  556. data->range[sattr->index] |= val << 4;
  557. i2c_smbus_write_byte_data(client, TEMP_TRANGE_REG(sattr->index),
  558. data->range[sattr->index]);
  559. mutex_unlock(&data->lock);
  560. return count;
  561. }
  562. static ssize_t tach_show(struct device *dev, struct device_attribute *attr,
  563. char *buf)
  564. {
  565. struct adt7475_data *data = adt7475_update_device(dev);
  566. struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
  567. int out;
  568. if (IS_ERR(data))
  569. return PTR_ERR(data);
  570. if (sattr->nr == ALARM)
  571. out = (data->alarms >> (sattr->index + 10)) & 1;
  572. else
  573. out = tach2rpm(data->tach[sattr->nr][sattr->index]);
  574. return sprintf(buf, "%d\n", out);
  575. }
  576. static ssize_t tach_store(struct device *dev, struct device_attribute *attr,
  577. const char *buf, size_t count)
  578. {
  579. struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
  580. struct adt7475_data *data = dev_get_drvdata(dev);
  581. struct i2c_client *client = data->client;
  582. unsigned long val;
  583. if (kstrtoul(buf, 10, &val))
  584. return -EINVAL;
  585. mutex_lock(&data->lock);
  586. data->tach[MIN][sattr->index] = rpm2tach(val);
  587. adt7475_write_word(client, TACH_MIN_REG(sattr->index),
  588. data->tach[MIN][sattr->index]);
  589. mutex_unlock(&data->lock);
  590. return count;
  591. }
  592. static ssize_t pwm_show(struct device *dev, struct device_attribute *attr,
  593. char *buf)
  594. {
  595. struct adt7475_data *data = adt7475_update_device(dev);
  596. struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
  597. if (IS_ERR(data))
  598. return PTR_ERR(data);
  599. return sprintf(buf, "%d\n", data->pwm[sattr->nr][sattr->index]);
  600. }
  601. static ssize_t pwmchan_show(struct device *dev, struct device_attribute *attr,
  602. char *buf)
  603. {
  604. struct adt7475_data *data = adt7475_update_device(dev);
  605. struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
  606. if (IS_ERR(data))
  607. return PTR_ERR(data);
  608. return sprintf(buf, "%d\n", data->pwmchan[sattr->index]);
  609. }
  610. static ssize_t pwmctrl_show(struct device *dev, struct device_attribute *attr,
  611. char *buf)
  612. {
  613. struct adt7475_data *data = adt7475_update_device(dev);
  614. struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
  615. if (IS_ERR(data))
  616. return PTR_ERR(data);
  617. return sprintf(buf, "%d\n", data->pwmctl[sattr->index]);
  618. }
  619. static ssize_t pwm_store(struct device *dev, struct device_attribute *attr,
  620. const char *buf, size_t count)
  621. {
  622. struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
  623. struct adt7475_data *data = dev_get_drvdata(dev);
  624. struct i2c_client *client = data->client;
  625. unsigned char reg = 0;
  626. long val;
  627. if (kstrtol(buf, 10, &val))
  628. return -EINVAL;
  629. mutex_lock(&data->lock);
  630. switch (sattr->nr) {
  631. case INPUT:
  632. /* Get a fresh value for CONTROL */
  633. data->pwm[CONTROL][sattr->index] =
  634. adt7475_read(PWM_CONFIG_REG(sattr->index));
  635. /*
  636. * If we are not in manual mode, then we shouldn't allow
  637. * the user to set the pwm speed
  638. */
  639. if (((data->pwm[CONTROL][sattr->index] >> 5) & 7) != 7) {
  640. mutex_unlock(&data->lock);
  641. return count;
  642. }
  643. reg = PWM_REG(sattr->index);
  644. break;
  645. case MIN:
  646. reg = PWM_MIN_REG(sattr->index);
  647. break;
  648. case MAX:
  649. reg = PWM_MAX_REG(sattr->index);
  650. break;
  651. }
  652. data->pwm[sattr->nr][sattr->index] = clamp_val(val, 0, 0xFF);
  653. i2c_smbus_write_byte_data(client, reg,
  654. data->pwm[sattr->nr][sattr->index]);
  655. mutex_unlock(&data->lock);
  656. return count;
  657. }
  658. static ssize_t stall_disable_show(struct device *dev,
  659. struct device_attribute *attr, char *buf)
  660. {
  661. struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
  662. struct adt7475_data *data = dev_get_drvdata(dev);
  663. u8 mask = BIT(5 + sattr->index);
  664. return sprintf(buf, "%d\n", !!(data->enh_acoustics[0] & mask));
  665. }
  666. static ssize_t stall_disable_store(struct device *dev,
  667. struct device_attribute *attr,
  668. const char *buf, size_t count)
  669. {
  670. struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
  671. struct adt7475_data *data = dev_get_drvdata(dev);
  672. struct i2c_client *client = data->client;
  673. long val;
  674. u8 mask = BIT(5 + sattr->index);
  675. if (kstrtol(buf, 10, &val))
  676. return -EINVAL;
  677. mutex_lock(&data->lock);
  678. data->enh_acoustics[0] &= ~mask;
  679. if (val)
  680. data->enh_acoustics[0] |= mask;
  681. i2c_smbus_write_byte_data(client, REG_ENHANCE_ACOUSTICS1,
  682. data->enh_acoustics[0]);
  683. mutex_unlock(&data->lock);
  684. return count;
  685. }
  686. /* Called by set_pwmctrl and set_pwmchan */
  687. static int hw_set_pwm(struct i2c_client *client, int index,
  688. unsigned int pwmctl, unsigned int pwmchan)
  689. {
  690. struct adt7475_data *data = i2c_get_clientdata(client);
  691. long val = 0;
  692. switch (pwmctl) {
  693. case 0:
  694. val = 0x03; /* Run at full speed */
  695. break;
  696. case 1:
  697. val = 0x07; /* Manual mode */
  698. break;
  699. case 2:
  700. switch (pwmchan) {
  701. case 1:
  702. /* Remote1 controls PWM */
  703. val = 0x00;
  704. break;
  705. case 2:
  706. /* local controls PWM */
  707. val = 0x01;
  708. break;
  709. case 4:
  710. /* remote2 controls PWM */
  711. val = 0x02;
  712. break;
  713. case 6:
  714. /* local/remote2 control PWM */
  715. val = 0x05;
  716. break;
  717. case 7:
  718. /* All three control PWM */
  719. val = 0x06;
  720. break;
  721. default:
  722. return -EINVAL;
  723. }
  724. break;
  725. default:
  726. return -EINVAL;
  727. }
  728. data->pwmctl[index] = pwmctl;
  729. data->pwmchan[index] = pwmchan;
  730. data->pwm[CONTROL][index] &= ~0xE0;
  731. data->pwm[CONTROL][index] |= (val & 7) << 5;
  732. i2c_smbus_write_byte_data(client, PWM_CONFIG_REG(index),
  733. data->pwm[CONTROL][index]);
  734. return 0;
  735. }
  736. static ssize_t pwmchan_store(struct device *dev,
  737. struct device_attribute *attr, const char *buf,
  738. size_t count)
  739. {
  740. struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
  741. struct adt7475_data *data = dev_get_drvdata(dev);
  742. struct i2c_client *client = data->client;
  743. int r;
  744. long val;
  745. if (kstrtol(buf, 10, &val))
  746. return -EINVAL;
  747. mutex_lock(&data->lock);
  748. /* Read Modify Write PWM values */
  749. adt7475_read_pwm(client, sattr->index);
  750. r = hw_set_pwm(client, sattr->index, data->pwmctl[sattr->index], val);
  751. if (r)
  752. count = r;
  753. mutex_unlock(&data->lock);
  754. return count;
  755. }
  756. static ssize_t pwmctrl_store(struct device *dev,
  757. struct device_attribute *attr, const char *buf,
  758. size_t count)
  759. {
  760. struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
  761. struct adt7475_data *data = dev_get_drvdata(dev);
  762. struct i2c_client *client = data->client;
  763. int r;
  764. long val;
  765. if (kstrtol(buf, 10, &val))
  766. return -EINVAL;
  767. mutex_lock(&data->lock);
  768. /* Read Modify Write PWM values */
  769. adt7475_read_pwm(client, sattr->index);
  770. r = hw_set_pwm(client, sattr->index, val, data->pwmchan[sattr->index]);
  771. if (r)
  772. count = r;
  773. mutex_unlock(&data->lock);
  774. return count;
  775. }
  776. /* List of frequencies for the PWM */
  777. static const int pwmfreq_table[] = {
  778. 11, 14, 22, 29, 35, 44, 58, 88, 22500
  779. };
  780. static ssize_t pwmfreq_show(struct device *dev, struct device_attribute *attr,
  781. char *buf)
  782. {
  783. struct adt7475_data *data = adt7475_update_device(dev);
  784. struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
  785. int idx;
  786. if (IS_ERR(data))
  787. return PTR_ERR(data);
  788. idx = clamp_val(data->range[sattr->index] & 0xf, 0,
  789. ARRAY_SIZE(pwmfreq_table) - 1);
  790. return sprintf(buf, "%d\n", pwmfreq_table[idx]);
  791. }
  792. static ssize_t pwmfreq_store(struct device *dev,
  793. struct device_attribute *attr, const char *buf,
  794. size_t count)
  795. {
  796. struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
  797. struct adt7475_data *data = dev_get_drvdata(dev);
  798. struct i2c_client *client = data->client;
  799. int out;
  800. long val;
  801. if (kstrtol(buf, 10, &val))
  802. return -EINVAL;
  803. out = find_closest(val, pwmfreq_table, ARRAY_SIZE(pwmfreq_table));
  804. mutex_lock(&data->lock);
  805. data->range[sattr->index] =
  806. adt7475_read(TEMP_TRANGE_REG(sattr->index));
  807. data->range[sattr->index] &= ~0xf;
  808. data->range[sattr->index] |= out;
  809. i2c_smbus_write_byte_data(client, TEMP_TRANGE_REG(sattr->index),
  810. data->range[sattr->index]);
  811. mutex_unlock(&data->lock);
  812. return count;
  813. }
  814. static ssize_t pwm_use_point2_pwm_at_crit_show(struct device *dev,
  815. struct device_attribute *devattr,
  816. char *buf)
  817. {
  818. struct adt7475_data *data = adt7475_update_device(dev);
  819. if (IS_ERR(data))
  820. return PTR_ERR(data);
  821. return sprintf(buf, "%d\n", !!(data->config4 & CONFIG4_MAXDUTY));
  822. }
  823. static ssize_t pwm_use_point2_pwm_at_crit_store(struct device *dev,
  824. struct device_attribute *devattr,
  825. const char *buf, size_t count)
  826. {
  827. struct adt7475_data *data = dev_get_drvdata(dev);
  828. struct i2c_client *client = data->client;
  829. long val;
  830. if (kstrtol(buf, 10, &val))
  831. return -EINVAL;
  832. if (val != 0 && val != 1)
  833. return -EINVAL;
  834. mutex_lock(&data->lock);
  835. data->config4 = i2c_smbus_read_byte_data(client, REG_CONFIG4);
  836. if (val)
  837. data->config4 |= CONFIG4_MAXDUTY;
  838. else
  839. data->config4 &= ~CONFIG4_MAXDUTY;
  840. i2c_smbus_write_byte_data(client, REG_CONFIG4, data->config4);
  841. mutex_unlock(&data->lock);
  842. return count;
  843. }
  844. static ssize_t vrm_show(struct device *dev, struct device_attribute *devattr,
  845. char *buf)
  846. {
  847. struct adt7475_data *data = dev_get_drvdata(dev);
  848. return sprintf(buf, "%d\n", (int)data->vrm);
  849. }
  850. static ssize_t vrm_store(struct device *dev, struct device_attribute *devattr,
  851. const char *buf, size_t count)
  852. {
  853. struct adt7475_data *data = dev_get_drvdata(dev);
  854. long val;
  855. if (kstrtol(buf, 10, &val))
  856. return -EINVAL;
  857. if (val < 0 || val > 255)
  858. return -EINVAL;
  859. data->vrm = val;
  860. return count;
  861. }
  862. static ssize_t cpu0_vid_show(struct device *dev,
  863. struct device_attribute *devattr, char *buf)
  864. {
  865. struct adt7475_data *data = adt7475_update_device(dev);
  866. if (IS_ERR(data))
  867. return PTR_ERR(data);
  868. return sprintf(buf, "%d\n", vid_from_reg(data->vid, data->vrm));
  869. }
  870. static SENSOR_DEVICE_ATTR_2_RO(in0_input, voltage, INPUT, 0);
  871. static SENSOR_DEVICE_ATTR_2_RW(in0_max, voltage, MAX, 0);
  872. static SENSOR_DEVICE_ATTR_2_RW(in0_min, voltage, MIN, 0);
  873. static SENSOR_DEVICE_ATTR_2_RO(in0_alarm, voltage, ALARM, 0);
  874. static SENSOR_DEVICE_ATTR_2_RO(in1_input, voltage, INPUT, 1);
  875. static SENSOR_DEVICE_ATTR_2_RW(in1_max, voltage, MAX, 1);
  876. static SENSOR_DEVICE_ATTR_2_RW(in1_min, voltage, MIN, 1);
  877. static SENSOR_DEVICE_ATTR_2_RO(in1_alarm, voltage, ALARM, 1);
  878. static SENSOR_DEVICE_ATTR_2_RO(in2_input, voltage, INPUT, 2);
  879. static SENSOR_DEVICE_ATTR_2_RW(in2_max, voltage, MAX, 2);
  880. static SENSOR_DEVICE_ATTR_2_RW(in2_min, voltage, MIN, 2);
  881. static SENSOR_DEVICE_ATTR_2_RO(in2_alarm, voltage, ALARM, 2);
  882. static SENSOR_DEVICE_ATTR_2_RO(in3_input, voltage, INPUT, 3);
  883. static SENSOR_DEVICE_ATTR_2_RW(in3_max, voltage, MAX, 3);
  884. static SENSOR_DEVICE_ATTR_2_RW(in3_min, voltage, MIN, 3);
  885. static SENSOR_DEVICE_ATTR_2_RO(in3_alarm, voltage, ALARM, 3);
  886. static SENSOR_DEVICE_ATTR_2_RO(in4_input, voltage, INPUT, 4);
  887. static SENSOR_DEVICE_ATTR_2_RW(in4_max, voltage, MAX, 4);
  888. static SENSOR_DEVICE_ATTR_2_RW(in4_min, voltage, MIN, 4);
  889. static SENSOR_DEVICE_ATTR_2_RO(in4_alarm, voltage, ALARM, 8);
  890. static SENSOR_DEVICE_ATTR_2_RO(in5_input, voltage, INPUT, 5);
  891. static SENSOR_DEVICE_ATTR_2_RW(in5_max, voltage, MAX, 5);
  892. static SENSOR_DEVICE_ATTR_2_RW(in5_min, voltage, MIN, 5);
  893. static SENSOR_DEVICE_ATTR_2_RO(in5_alarm, voltage, ALARM, 31);
  894. static SENSOR_DEVICE_ATTR_2_RO(temp1_input, temp, INPUT, 0);
  895. static SENSOR_DEVICE_ATTR_2_RO(temp1_alarm, temp, ALARM, 0);
  896. static SENSOR_DEVICE_ATTR_2_RO(temp1_fault, temp, FAULT, 0);
  897. static SENSOR_DEVICE_ATTR_2_RW(temp1_max, temp, MAX, 0);
  898. static SENSOR_DEVICE_ATTR_2_RW(temp1_min, temp, MIN, 0);
  899. static SENSOR_DEVICE_ATTR_2_RW(temp1_offset, temp, OFFSET, 0);
  900. static SENSOR_DEVICE_ATTR_2_RW(temp1_auto_point1_temp, temp, AUTOMIN, 0);
  901. static SENSOR_DEVICE_ATTR_2_RW(temp1_auto_point2_temp, point2, 0, 0);
  902. static SENSOR_DEVICE_ATTR_2_RW(temp1_crit, temp, THERM, 0);
  903. static SENSOR_DEVICE_ATTR_2_RW(temp1_crit_hyst, temp, HYSTERSIS, 0);
  904. static SENSOR_DEVICE_ATTR_2_RW(temp1_smoothing, temp_st, 0, 0);
  905. static SENSOR_DEVICE_ATTR_2_RO(temp2_input, temp, INPUT, 1);
  906. static SENSOR_DEVICE_ATTR_2_RO(temp2_alarm, temp, ALARM, 1);
  907. static SENSOR_DEVICE_ATTR_2_RW(temp2_max, temp, MAX, 1);
  908. static SENSOR_DEVICE_ATTR_2_RW(temp2_min, temp, MIN, 1);
  909. static SENSOR_DEVICE_ATTR_2_RW(temp2_offset, temp, OFFSET, 1);
  910. static SENSOR_DEVICE_ATTR_2_RW(temp2_auto_point1_temp, temp, AUTOMIN, 1);
  911. static SENSOR_DEVICE_ATTR_2_RW(temp2_auto_point2_temp, point2, 0, 1);
  912. static SENSOR_DEVICE_ATTR_2_RW(temp2_crit, temp, THERM, 1);
  913. static SENSOR_DEVICE_ATTR_2_RW(temp2_crit_hyst, temp, HYSTERSIS, 1);
  914. static SENSOR_DEVICE_ATTR_2_RW(temp2_smoothing, temp_st, 0, 1);
  915. static SENSOR_DEVICE_ATTR_2_RO(temp3_input, temp, INPUT, 2);
  916. static SENSOR_DEVICE_ATTR_2_RO(temp3_alarm, temp, ALARM, 2);
  917. static SENSOR_DEVICE_ATTR_2_RO(temp3_fault, temp, FAULT, 2);
  918. static SENSOR_DEVICE_ATTR_2_RW(temp3_max, temp, MAX, 2);
  919. static SENSOR_DEVICE_ATTR_2_RW(temp3_min, temp, MIN, 2);
  920. static SENSOR_DEVICE_ATTR_2_RW(temp3_offset, temp, OFFSET, 2);
  921. static SENSOR_DEVICE_ATTR_2_RW(temp3_auto_point1_temp, temp, AUTOMIN, 2);
  922. static SENSOR_DEVICE_ATTR_2_RW(temp3_auto_point2_temp, point2, 0, 2);
  923. static SENSOR_DEVICE_ATTR_2_RW(temp3_crit, temp, THERM, 2);
  924. static SENSOR_DEVICE_ATTR_2_RW(temp3_crit_hyst, temp, HYSTERSIS, 2);
  925. static SENSOR_DEVICE_ATTR_2_RW(temp3_smoothing, temp_st, 0, 2);
  926. static SENSOR_DEVICE_ATTR_2_RO(fan1_input, tach, INPUT, 0);
  927. static SENSOR_DEVICE_ATTR_2_RW(fan1_min, tach, MIN, 0);
  928. static SENSOR_DEVICE_ATTR_2_RO(fan1_alarm, tach, ALARM, 0);
  929. static SENSOR_DEVICE_ATTR_2_RO(fan2_input, tach, INPUT, 1);
  930. static SENSOR_DEVICE_ATTR_2_RW(fan2_min, tach, MIN, 1);
  931. static SENSOR_DEVICE_ATTR_2_RO(fan2_alarm, tach, ALARM, 1);
  932. static SENSOR_DEVICE_ATTR_2_RO(fan3_input, tach, INPUT, 2);
  933. static SENSOR_DEVICE_ATTR_2_RW(fan3_min, tach, MIN, 2);
  934. static SENSOR_DEVICE_ATTR_2_RO(fan3_alarm, tach, ALARM, 2);
  935. static SENSOR_DEVICE_ATTR_2_RO(fan4_input, tach, INPUT, 3);
  936. static SENSOR_DEVICE_ATTR_2_RW(fan4_min, tach, MIN, 3);
  937. static SENSOR_DEVICE_ATTR_2_RO(fan4_alarm, tach, ALARM, 3);
  938. static SENSOR_DEVICE_ATTR_2_RW(pwm1, pwm, INPUT, 0);
  939. static SENSOR_DEVICE_ATTR_2_RW(pwm1_freq, pwmfreq, INPUT, 0);
  940. static SENSOR_DEVICE_ATTR_2_RW(pwm1_enable, pwmctrl, INPUT, 0);
  941. static SENSOR_DEVICE_ATTR_2_RW(pwm1_auto_channels_temp, pwmchan, INPUT, 0);
  942. static SENSOR_DEVICE_ATTR_2_RW(pwm1_auto_point1_pwm, pwm, MIN, 0);
  943. static SENSOR_DEVICE_ATTR_2_RW(pwm1_auto_point2_pwm, pwm, MAX, 0);
  944. static SENSOR_DEVICE_ATTR_2_RW(pwm1_stall_disable, stall_disable, 0, 0);
  945. static SENSOR_DEVICE_ATTR_2_RW(pwm2, pwm, INPUT, 1);
  946. static SENSOR_DEVICE_ATTR_2_RW(pwm2_freq, pwmfreq, INPUT, 1);
  947. static SENSOR_DEVICE_ATTR_2_RW(pwm2_enable, pwmctrl, INPUT, 1);
  948. static SENSOR_DEVICE_ATTR_2_RW(pwm2_auto_channels_temp, pwmchan, INPUT, 1);
  949. static SENSOR_DEVICE_ATTR_2_RW(pwm2_auto_point1_pwm, pwm, MIN, 1);
  950. static SENSOR_DEVICE_ATTR_2_RW(pwm2_auto_point2_pwm, pwm, MAX, 1);
  951. static SENSOR_DEVICE_ATTR_2_RW(pwm2_stall_disable, stall_disable, 0, 1);
  952. static SENSOR_DEVICE_ATTR_2_RW(pwm3, pwm, INPUT, 2);
  953. static SENSOR_DEVICE_ATTR_2_RW(pwm3_freq, pwmfreq, INPUT, 2);
  954. static SENSOR_DEVICE_ATTR_2_RW(pwm3_enable, pwmctrl, INPUT, 2);
  955. static SENSOR_DEVICE_ATTR_2_RW(pwm3_auto_channels_temp, pwmchan, INPUT, 2);
  956. static SENSOR_DEVICE_ATTR_2_RW(pwm3_auto_point1_pwm, pwm, MIN, 2);
  957. static SENSOR_DEVICE_ATTR_2_RW(pwm3_auto_point2_pwm, pwm, MAX, 2);
  958. static SENSOR_DEVICE_ATTR_2_RW(pwm3_stall_disable, stall_disable, 0, 2);
  959. /* Non-standard name, might need revisiting */
  960. static DEVICE_ATTR_RW(pwm_use_point2_pwm_at_crit);
  961. static DEVICE_ATTR_RW(vrm);
  962. static DEVICE_ATTR_RO(cpu0_vid);
  963. static struct attribute *adt7475_attrs[] = {
  964. &sensor_dev_attr_in1_input.dev_attr.attr,
  965. &sensor_dev_attr_in1_max.dev_attr.attr,
  966. &sensor_dev_attr_in1_min.dev_attr.attr,
  967. &sensor_dev_attr_in1_alarm.dev_attr.attr,
  968. &sensor_dev_attr_in2_input.dev_attr.attr,
  969. &sensor_dev_attr_in2_max.dev_attr.attr,
  970. &sensor_dev_attr_in2_min.dev_attr.attr,
  971. &sensor_dev_attr_in2_alarm.dev_attr.attr,
  972. &sensor_dev_attr_temp1_input.dev_attr.attr,
  973. &sensor_dev_attr_temp1_alarm.dev_attr.attr,
  974. &sensor_dev_attr_temp1_fault.dev_attr.attr,
  975. &sensor_dev_attr_temp1_max.dev_attr.attr,
  976. &sensor_dev_attr_temp1_min.dev_attr.attr,
  977. &sensor_dev_attr_temp1_offset.dev_attr.attr,
  978. &sensor_dev_attr_temp1_auto_point1_temp.dev_attr.attr,
  979. &sensor_dev_attr_temp1_auto_point2_temp.dev_attr.attr,
  980. &sensor_dev_attr_temp1_crit.dev_attr.attr,
  981. &sensor_dev_attr_temp1_crit_hyst.dev_attr.attr,
  982. &sensor_dev_attr_temp1_smoothing.dev_attr.attr,
  983. &sensor_dev_attr_temp2_input.dev_attr.attr,
  984. &sensor_dev_attr_temp2_alarm.dev_attr.attr,
  985. &sensor_dev_attr_temp2_max.dev_attr.attr,
  986. &sensor_dev_attr_temp2_min.dev_attr.attr,
  987. &sensor_dev_attr_temp2_offset.dev_attr.attr,
  988. &sensor_dev_attr_temp2_auto_point1_temp.dev_attr.attr,
  989. &sensor_dev_attr_temp2_auto_point2_temp.dev_attr.attr,
  990. &sensor_dev_attr_temp2_crit.dev_attr.attr,
  991. &sensor_dev_attr_temp2_crit_hyst.dev_attr.attr,
  992. &sensor_dev_attr_temp2_smoothing.dev_attr.attr,
  993. &sensor_dev_attr_temp3_input.dev_attr.attr,
  994. &sensor_dev_attr_temp3_fault.dev_attr.attr,
  995. &sensor_dev_attr_temp3_alarm.dev_attr.attr,
  996. &sensor_dev_attr_temp3_max.dev_attr.attr,
  997. &sensor_dev_attr_temp3_min.dev_attr.attr,
  998. &sensor_dev_attr_temp3_offset.dev_attr.attr,
  999. &sensor_dev_attr_temp3_auto_point1_temp.dev_attr.attr,
  1000. &sensor_dev_attr_temp3_auto_point2_temp.dev_attr.attr,
  1001. &sensor_dev_attr_temp3_crit.dev_attr.attr,
  1002. &sensor_dev_attr_temp3_crit_hyst.dev_attr.attr,
  1003. &sensor_dev_attr_temp3_smoothing.dev_attr.attr,
  1004. &sensor_dev_attr_fan1_input.dev_attr.attr,
  1005. &sensor_dev_attr_fan1_min.dev_attr.attr,
  1006. &sensor_dev_attr_fan1_alarm.dev_attr.attr,
  1007. &sensor_dev_attr_fan2_input.dev_attr.attr,
  1008. &sensor_dev_attr_fan2_min.dev_attr.attr,
  1009. &sensor_dev_attr_fan2_alarm.dev_attr.attr,
  1010. &sensor_dev_attr_fan3_input.dev_attr.attr,
  1011. &sensor_dev_attr_fan3_min.dev_attr.attr,
  1012. &sensor_dev_attr_fan3_alarm.dev_attr.attr,
  1013. &sensor_dev_attr_pwm1.dev_attr.attr,
  1014. &sensor_dev_attr_pwm1_freq.dev_attr.attr,
  1015. &sensor_dev_attr_pwm1_enable.dev_attr.attr,
  1016. &sensor_dev_attr_pwm1_auto_channels_temp.dev_attr.attr,
  1017. &sensor_dev_attr_pwm1_auto_point1_pwm.dev_attr.attr,
  1018. &sensor_dev_attr_pwm1_auto_point2_pwm.dev_attr.attr,
  1019. &sensor_dev_attr_pwm1_stall_disable.dev_attr.attr,
  1020. &sensor_dev_attr_pwm3.dev_attr.attr,
  1021. &sensor_dev_attr_pwm3_freq.dev_attr.attr,
  1022. &sensor_dev_attr_pwm3_enable.dev_attr.attr,
  1023. &sensor_dev_attr_pwm3_auto_channels_temp.dev_attr.attr,
  1024. &sensor_dev_attr_pwm3_auto_point1_pwm.dev_attr.attr,
  1025. &sensor_dev_attr_pwm3_auto_point2_pwm.dev_attr.attr,
  1026. &sensor_dev_attr_pwm3_stall_disable.dev_attr.attr,
  1027. &dev_attr_pwm_use_point2_pwm_at_crit.attr,
  1028. NULL,
  1029. };
  1030. static struct attribute *fan4_attrs[] = {
  1031. &sensor_dev_attr_fan4_input.dev_attr.attr,
  1032. &sensor_dev_attr_fan4_min.dev_attr.attr,
  1033. &sensor_dev_attr_fan4_alarm.dev_attr.attr,
  1034. NULL
  1035. };
  1036. static struct attribute *pwm2_attrs[] = {
  1037. &sensor_dev_attr_pwm2.dev_attr.attr,
  1038. &sensor_dev_attr_pwm2_freq.dev_attr.attr,
  1039. &sensor_dev_attr_pwm2_enable.dev_attr.attr,
  1040. &sensor_dev_attr_pwm2_auto_channels_temp.dev_attr.attr,
  1041. &sensor_dev_attr_pwm2_auto_point1_pwm.dev_attr.attr,
  1042. &sensor_dev_attr_pwm2_auto_point2_pwm.dev_attr.attr,
  1043. &sensor_dev_attr_pwm2_stall_disable.dev_attr.attr,
  1044. NULL
  1045. };
  1046. static struct attribute *in0_attrs[] = {
  1047. &sensor_dev_attr_in0_input.dev_attr.attr,
  1048. &sensor_dev_attr_in0_max.dev_attr.attr,
  1049. &sensor_dev_attr_in0_min.dev_attr.attr,
  1050. &sensor_dev_attr_in0_alarm.dev_attr.attr,
  1051. NULL
  1052. };
  1053. static struct attribute *in3_attrs[] = {
  1054. &sensor_dev_attr_in3_input.dev_attr.attr,
  1055. &sensor_dev_attr_in3_max.dev_attr.attr,
  1056. &sensor_dev_attr_in3_min.dev_attr.attr,
  1057. &sensor_dev_attr_in3_alarm.dev_attr.attr,
  1058. NULL
  1059. };
  1060. static struct attribute *in4_attrs[] = {
  1061. &sensor_dev_attr_in4_input.dev_attr.attr,
  1062. &sensor_dev_attr_in4_max.dev_attr.attr,
  1063. &sensor_dev_attr_in4_min.dev_attr.attr,
  1064. &sensor_dev_attr_in4_alarm.dev_attr.attr,
  1065. NULL
  1066. };
  1067. static struct attribute *in5_attrs[] = {
  1068. &sensor_dev_attr_in5_input.dev_attr.attr,
  1069. &sensor_dev_attr_in5_max.dev_attr.attr,
  1070. &sensor_dev_attr_in5_min.dev_attr.attr,
  1071. &sensor_dev_attr_in5_alarm.dev_attr.attr,
  1072. NULL
  1073. };
  1074. static struct attribute *vid_attrs[] = {
  1075. &dev_attr_cpu0_vid.attr,
  1076. &dev_attr_vrm.attr,
  1077. NULL
  1078. };
  1079. static const struct attribute_group adt7475_attr_group = { .attrs = adt7475_attrs };
  1080. static const struct attribute_group fan4_attr_group = { .attrs = fan4_attrs };
  1081. static const struct attribute_group pwm2_attr_group = { .attrs = pwm2_attrs };
  1082. static const struct attribute_group in0_attr_group = { .attrs = in0_attrs };
  1083. static const struct attribute_group in3_attr_group = { .attrs = in3_attrs };
  1084. static const struct attribute_group in4_attr_group = { .attrs = in4_attrs };
  1085. static const struct attribute_group in5_attr_group = { .attrs = in5_attrs };
  1086. static const struct attribute_group vid_attr_group = { .attrs = vid_attrs };
  1087. static int adt7475_detect(struct i2c_client *client,
  1088. struct i2c_board_info *info)
  1089. {
  1090. struct i2c_adapter *adapter = client->adapter;
  1091. int vendid, devid, devid2;
  1092. const char *name;
  1093. if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA))
  1094. return -ENODEV;
  1095. vendid = adt7475_read(REG_VENDID);
  1096. devid2 = adt7475_read(REG_DEVID2);
  1097. if (vendid != 0x41 || /* Analog Devices */
  1098. (devid2 & 0xf8) != 0x68)
  1099. return -ENODEV;
  1100. devid = adt7475_read(REG_DEVID);
  1101. if (devid == 0x73)
  1102. name = "adt7473";
  1103. else if (devid == 0x75 && client->addr == 0x2e)
  1104. name = "adt7475";
  1105. else if (devid == 0x76)
  1106. name = "adt7476";
  1107. else if ((devid2 & 0xfc) == 0x6c)
  1108. name = "adt7490";
  1109. else {
  1110. dev_dbg(&adapter->dev,
  1111. "Couldn't detect an ADT7473/75/76/90 part at "
  1112. "0x%02x\n", (unsigned int)client->addr);
  1113. return -ENODEV;
  1114. }
  1115. strscpy(info->type, name, I2C_NAME_SIZE);
  1116. return 0;
  1117. }
  1118. static int adt7475_update_limits(struct i2c_client *client)
  1119. {
  1120. struct adt7475_data *data = i2c_get_clientdata(client);
  1121. int i;
  1122. int ret;
  1123. ret = adt7475_read(REG_CONFIG4);
  1124. if (ret < 0)
  1125. return ret;
  1126. data->config4 = ret;
  1127. ret = adt7475_read(REG_CONFIG5);
  1128. if (ret < 0)
  1129. return ret;
  1130. data->config5 = ret;
  1131. for (i = 0; i < ADT7475_VOLTAGE_COUNT; i++) {
  1132. if (!(data->has_voltage & (1 << i)))
  1133. continue;
  1134. /* Adjust values so they match the input precision */
  1135. ret = adt7475_read(VOLTAGE_MIN_REG(i));
  1136. if (ret < 0)
  1137. return ret;
  1138. data->voltage[MIN][i] = ret << 2;
  1139. ret = adt7475_read(VOLTAGE_MAX_REG(i));
  1140. if (ret < 0)
  1141. return ret;
  1142. data->voltage[MAX][i] = ret << 2;
  1143. }
  1144. if (data->has_voltage & (1 << 5)) {
  1145. ret = adt7475_read(REG_VTT_MIN);
  1146. if (ret < 0)
  1147. return ret;
  1148. data->voltage[MIN][5] = ret << 2;
  1149. ret = adt7475_read(REG_VTT_MAX);
  1150. if (ret < 0)
  1151. return ret;
  1152. data->voltage[MAX][5] = ret << 2;
  1153. }
  1154. for (i = 0; i < ADT7475_TEMP_COUNT; i++) {
  1155. /* Adjust values so they match the input precision */
  1156. ret = adt7475_read(TEMP_MIN_REG(i));
  1157. if (ret < 0)
  1158. return ret;
  1159. data->temp[MIN][i] = ret << 2;
  1160. ret = adt7475_read(TEMP_MAX_REG(i));
  1161. if (ret < 0)
  1162. return ret;
  1163. data->temp[MAX][i] = ret << 2;
  1164. ret = adt7475_read(TEMP_TMIN_REG(i));
  1165. if (ret < 0)
  1166. return ret;
  1167. data->temp[AUTOMIN][i] = ret << 2;
  1168. ret = adt7475_read(TEMP_THERM_REG(i));
  1169. if (ret < 0)
  1170. return ret;
  1171. data->temp[THERM][i] = ret << 2;
  1172. ret = adt7475_read(TEMP_OFFSET_REG(i));
  1173. if (ret < 0)
  1174. return ret;
  1175. data->temp[OFFSET][i] = ret;
  1176. }
  1177. adt7475_read_hystersis(client);
  1178. for (i = 0; i < ADT7475_TACH_COUNT; i++) {
  1179. if (i == 3 && !data->has_fan4)
  1180. continue;
  1181. ret = adt7475_read_word(client, TACH_MIN_REG(i));
  1182. if (ret < 0)
  1183. return ret;
  1184. data->tach[MIN][i] = ret;
  1185. }
  1186. for (i = 0; i < ADT7475_PWM_COUNT; i++) {
  1187. if (i == 1 && !data->has_pwm2)
  1188. continue;
  1189. ret = adt7475_read(PWM_MAX_REG(i));
  1190. if (ret < 0)
  1191. return ret;
  1192. data->pwm[MAX][i] = ret;
  1193. ret = adt7475_read(PWM_MIN_REG(i));
  1194. if (ret < 0)
  1195. return ret;
  1196. data->pwm[MIN][i] = ret;
  1197. /* Set the channel and control information */
  1198. adt7475_read_pwm(client, i);
  1199. }
  1200. ret = adt7475_read(TEMP_TRANGE_REG(0));
  1201. if (ret < 0)
  1202. return ret;
  1203. data->range[0] = ret;
  1204. ret = adt7475_read(TEMP_TRANGE_REG(1));
  1205. if (ret < 0)
  1206. return ret;
  1207. data->range[1] = ret;
  1208. ret = adt7475_read(TEMP_TRANGE_REG(2));
  1209. if (ret < 0)
  1210. return ret;
  1211. data->range[2] = ret;
  1212. return 0;
  1213. }
  1214. static int load_config3(const struct i2c_client *client, const char *propname)
  1215. {
  1216. const char *function;
  1217. u8 config3;
  1218. int ret;
  1219. ret = of_property_read_string(client->dev.of_node, propname, &function);
  1220. if (!ret) {
  1221. ret = adt7475_read(REG_CONFIG3);
  1222. if (ret < 0)
  1223. return ret;
  1224. config3 = ret & ~CONFIG3_SMBALERT;
  1225. if (!strcmp("pwm2", function))
  1226. ;
  1227. else if (!strcmp("smbalert#", function))
  1228. config3 |= CONFIG3_SMBALERT;
  1229. else
  1230. return -EINVAL;
  1231. return i2c_smbus_write_byte_data(client, REG_CONFIG3, config3);
  1232. }
  1233. return 0;
  1234. }
  1235. static int load_config4(const struct i2c_client *client, const char *propname)
  1236. {
  1237. const char *function;
  1238. u8 config4;
  1239. int ret;
  1240. ret = of_property_read_string(client->dev.of_node, propname, &function);
  1241. if (!ret) {
  1242. ret = adt7475_read(REG_CONFIG4);
  1243. if (ret < 0)
  1244. return ret;
  1245. config4 = ret & ~CONFIG4_PINFUNC;
  1246. if (!strcmp("tach4", function))
  1247. ;
  1248. else if (!strcmp("therm#", function))
  1249. config4 |= CONFIG4_THERM;
  1250. else if (!strcmp("smbalert#", function))
  1251. config4 |= CONFIG4_SMBALERT;
  1252. else if (!strcmp("gpio", function))
  1253. config4 |= CONFIG4_PINFUNC;
  1254. else
  1255. return -EINVAL;
  1256. return i2c_smbus_write_byte_data(client, REG_CONFIG4, config4);
  1257. }
  1258. return 0;
  1259. }
  1260. static int load_config(const struct i2c_client *client, enum chips chip)
  1261. {
  1262. int err;
  1263. const char *prop1, *prop2;
  1264. switch (chip) {
  1265. case adt7473:
  1266. case adt7475:
  1267. prop1 = "adi,pin5-function";
  1268. prop2 = "adi,pin9-function";
  1269. break;
  1270. case adt7476:
  1271. case adt7490:
  1272. prop1 = "adi,pin10-function";
  1273. prop2 = "adi,pin14-function";
  1274. break;
  1275. }
  1276. err = load_config3(client, prop1);
  1277. if (err) {
  1278. dev_err(&client->dev, "failed to configure %s\n", prop1);
  1279. return err;
  1280. }
  1281. err = load_config4(client, prop2);
  1282. if (err) {
  1283. dev_err(&client->dev, "failed to configure %s\n", prop2);
  1284. return err;
  1285. }
  1286. return 0;
  1287. }
  1288. static int set_property_bit(const struct i2c_client *client, char *property,
  1289. u8 *config, u8 bit_index)
  1290. {
  1291. u32 prop_value = 0;
  1292. int ret = of_property_read_u32(client->dev.of_node, property,
  1293. &prop_value);
  1294. if (!ret) {
  1295. if (prop_value)
  1296. *config |= (1 << bit_index);
  1297. else
  1298. *config &= ~(1 << bit_index);
  1299. }
  1300. return ret;
  1301. }
  1302. static int load_attenuators(const struct i2c_client *client, enum chips chip,
  1303. struct adt7475_data *data)
  1304. {
  1305. switch (chip) {
  1306. case adt7476:
  1307. case adt7490:
  1308. set_property_bit(client, "adi,bypass-attenuator-in0",
  1309. &data->config4, 4);
  1310. set_property_bit(client, "adi,bypass-attenuator-in1",
  1311. &data->config4, 5);
  1312. set_property_bit(client, "adi,bypass-attenuator-in3",
  1313. &data->config4, 6);
  1314. set_property_bit(client, "adi,bypass-attenuator-in4",
  1315. &data->config4, 7);
  1316. return i2c_smbus_write_byte_data(client, REG_CONFIG4,
  1317. data->config4);
  1318. case adt7473:
  1319. case adt7475:
  1320. set_property_bit(client, "adi,bypass-attenuator-in1",
  1321. &data->config2, 5);
  1322. return i2c_smbus_write_byte_data(client, REG_CONFIG2,
  1323. data->config2);
  1324. }
  1325. return 0;
  1326. }
  1327. static int adt7475_set_pwm_polarity(struct i2c_client *client)
  1328. {
  1329. u32 states[ADT7475_PWM_COUNT];
  1330. int ret, i;
  1331. u8 val;
  1332. ret = device_property_read_u32_array(&client->dev,
  1333. "adi,pwm-active-state", states,
  1334. ARRAY_SIZE(states));
  1335. if (ret)
  1336. return ret;
  1337. for (i = 0; i < ADT7475_PWM_COUNT; i++) {
  1338. ret = adt7475_read(PWM_CONFIG_REG(i));
  1339. if (ret < 0)
  1340. return ret;
  1341. val = ret;
  1342. if (states[i])
  1343. val &= ~BIT(4);
  1344. else
  1345. val |= BIT(4);
  1346. ret = i2c_smbus_write_byte_data(client, PWM_CONFIG_REG(i), val);
  1347. if (ret)
  1348. return ret;
  1349. }
  1350. return 0;
  1351. }
  1352. static int adt7475_probe(struct i2c_client *client)
  1353. {
  1354. enum chips chip;
  1355. static const char * const names[] = {
  1356. [adt7473] = "ADT7473",
  1357. [adt7475] = "ADT7475",
  1358. [adt7476] = "ADT7476",
  1359. [adt7490] = "ADT7490",
  1360. };
  1361. struct adt7475_data *data;
  1362. struct device *hwmon_dev;
  1363. int i, ret = 0, revision, group_num = 0;
  1364. u8 config3;
  1365. const struct i2c_device_id *id = i2c_match_id(adt7475_id, client);
  1366. data = devm_kzalloc(&client->dev, sizeof(*data), GFP_KERNEL);
  1367. if (data == NULL)
  1368. return -ENOMEM;
  1369. mutex_init(&data->lock);
  1370. data->client = client;
  1371. i2c_set_clientdata(client, data);
  1372. if (client->dev.of_node)
  1373. chip = (enum chips)of_device_get_match_data(&client->dev);
  1374. else
  1375. chip = id->driver_data;
  1376. /* Initialize device-specific values */
  1377. switch (chip) {
  1378. case adt7476:
  1379. data->has_voltage = 0x0e; /* in1 to in3 */
  1380. revision = adt7475_read(REG_DEVID2) & 0x07;
  1381. break;
  1382. case adt7490:
  1383. data->has_voltage = 0x3e; /* in1 to in5 */
  1384. revision = adt7475_read(REG_DEVID2) & 0x03;
  1385. if (revision == 0x03)
  1386. revision += adt7475_read(REG_DEVREV2);
  1387. break;
  1388. default:
  1389. data->has_voltage = 0x06; /* in1, in2 */
  1390. revision = adt7475_read(REG_DEVID2) & 0x07;
  1391. }
  1392. ret = load_config(client, chip);
  1393. if (ret)
  1394. return ret;
  1395. config3 = adt7475_read(REG_CONFIG3);
  1396. /* Pin PWM2 may alternatively be used for ALERT output */
  1397. if (!(config3 & CONFIG3_SMBALERT))
  1398. data->has_pwm2 = 1;
  1399. /* Meaning of this bit is inverted for the ADT7473-1 */
  1400. if (id->driver_data == adt7473 && revision >= 1)
  1401. data->has_pwm2 = !data->has_pwm2;
  1402. data->config4 = adt7475_read(REG_CONFIG4);
  1403. /* Pin TACH4 may alternatively be used for THERM */
  1404. if ((data->config4 & CONFIG4_PINFUNC) == 0x0)
  1405. data->has_fan4 = 1;
  1406. /*
  1407. * THERM configuration is more complex on the ADT7476 and ADT7490,
  1408. * because 2 different pins (TACH4 and +2.5 Vin) can be used for
  1409. * this function
  1410. */
  1411. if (id->driver_data == adt7490) {
  1412. if ((data->config4 & CONFIG4_PINFUNC) == 0x1 &&
  1413. !(config3 & CONFIG3_THERM))
  1414. data->has_fan4 = 1;
  1415. }
  1416. if (id->driver_data == adt7476 || id->driver_data == adt7490) {
  1417. if (!(config3 & CONFIG3_THERM) ||
  1418. (data->config4 & CONFIG4_PINFUNC) == 0x1)
  1419. data->has_voltage |= (1 << 0); /* in0 */
  1420. }
  1421. /*
  1422. * On the ADT7476, the +12V input pin may instead be used as VID5,
  1423. * and VID pins may alternatively be used as GPIO
  1424. */
  1425. if (id->driver_data == adt7476) {
  1426. u8 vid = adt7475_read(REG_VID);
  1427. if (!(vid & VID_VIDSEL))
  1428. data->has_voltage |= (1 << 4); /* in4 */
  1429. data->has_vid = !(adt7475_read(REG_CONFIG5) & CONFIG5_VIDGPIO);
  1430. }
  1431. /* Voltage attenuators can be bypassed, globally or individually */
  1432. data->config2 = adt7475_read(REG_CONFIG2);
  1433. ret = load_attenuators(client, chip, data);
  1434. if (ret)
  1435. dev_warn(&client->dev, "Error configuring attenuator bypass\n");
  1436. if (data->config2 & CONFIG2_ATTN) {
  1437. data->bypass_attn = (0x3 << 3) | 0x3;
  1438. } else {
  1439. data->bypass_attn = ((data->config4 & CONFIG4_ATTN_IN10) >> 4) |
  1440. ((data->config4 & CONFIG4_ATTN_IN43) >> 3);
  1441. }
  1442. data->bypass_attn &= data->has_voltage;
  1443. /*
  1444. * Call adt7475_read_pwm for all pwm's as this will reprogram any
  1445. * pwm's which are disabled to manual mode with 0% duty cycle
  1446. */
  1447. for (i = 0; i < ADT7475_PWM_COUNT; i++)
  1448. adt7475_read_pwm(client, i);
  1449. ret = adt7475_set_pwm_polarity(client);
  1450. if (ret && ret != -EINVAL)
  1451. dev_warn(&client->dev, "Error configuring pwm polarity\n");
  1452. /* Start monitoring */
  1453. switch (chip) {
  1454. case adt7475:
  1455. case adt7476:
  1456. i2c_smbus_write_byte_data(client, REG_CONFIG1,
  1457. adt7475_read(REG_CONFIG1) | 0x01);
  1458. break;
  1459. default:
  1460. break;
  1461. }
  1462. data->groups[group_num++] = &adt7475_attr_group;
  1463. /* Features that can be disabled individually */
  1464. if (data->has_fan4) {
  1465. data->groups[group_num++] = &fan4_attr_group;
  1466. }
  1467. if (data->has_pwm2) {
  1468. data->groups[group_num++] = &pwm2_attr_group;
  1469. }
  1470. if (data->has_voltage & (1 << 0)) {
  1471. data->groups[group_num++] = &in0_attr_group;
  1472. }
  1473. if (data->has_voltage & (1 << 3)) {
  1474. data->groups[group_num++] = &in3_attr_group;
  1475. }
  1476. if (data->has_voltage & (1 << 4)) {
  1477. data->groups[group_num++] = &in4_attr_group;
  1478. }
  1479. if (data->has_voltage & (1 << 5)) {
  1480. data->groups[group_num++] = &in5_attr_group;
  1481. }
  1482. if (data->has_vid) {
  1483. data->vrm = vid_which_vrm();
  1484. data->groups[group_num] = &vid_attr_group;
  1485. }
  1486. /* register device with all the acquired attributes */
  1487. hwmon_dev = devm_hwmon_device_register_with_groups(&client->dev,
  1488. client->name, data,
  1489. data->groups);
  1490. if (IS_ERR(hwmon_dev)) {
  1491. ret = PTR_ERR(hwmon_dev);
  1492. return ret;
  1493. }
  1494. dev_info(&client->dev, "%s device, revision %d\n",
  1495. names[id->driver_data], revision);
  1496. if ((data->has_voltage & 0x11) || data->has_fan4 || data->has_pwm2)
  1497. dev_info(&client->dev, "Optional features:%s%s%s%s%s\n",
  1498. (data->has_voltage & (1 << 0)) ? " in0" : "",
  1499. (data->has_voltage & (1 << 4)) ? " in4" : "",
  1500. data->has_fan4 ? " fan4" : "",
  1501. data->has_pwm2 ? " pwm2" : "",
  1502. data->has_vid ? " vid" : "");
  1503. if (data->bypass_attn)
  1504. dev_info(&client->dev, "Bypassing attenuators on:%s%s%s%s\n",
  1505. (data->bypass_attn & (1 << 0)) ? " in0" : "",
  1506. (data->bypass_attn & (1 << 1)) ? " in1" : "",
  1507. (data->bypass_attn & (1 << 3)) ? " in3" : "",
  1508. (data->bypass_attn & (1 << 4)) ? " in4" : "");
  1509. /* Limits and settings, should never change update more than once */
  1510. ret = adt7475_update_limits(client);
  1511. if (ret)
  1512. return ret;
  1513. return 0;
  1514. }
  1515. static struct i2c_driver adt7475_driver = {
  1516. .class = I2C_CLASS_HWMON,
  1517. .driver = {
  1518. .name = "adt7475",
  1519. .of_match_table = of_match_ptr(adt7475_of_match),
  1520. },
  1521. .probe_new = adt7475_probe,
  1522. .id_table = adt7475_id,
  1523. .detect = adt7475_detect,
  1524. .address_list = normal_i2c,
  1525. };
  1526. static void adt7475_read_hystersis(struct i2c_client *client)
  1527. {
  1528. struct adt7475_data *data = i2c_get_clientdata(client);
  1529. data->temp[HYSTERSIS][0] = (u16) adt7475_read(REG_REMOTE1_HYSTERSIS);
  1530. data->temp[HYSTERSIS][1] = data->temp[HYSTERSIS][0];
  1531. data->temp[HYSTERSIS][2] = (u16) adt7475_read(REG_REMOTE2_HYSTERSIS);
  1532. }
  1533. static void adt7475_read_pwm(struct i2c_client *client, int index)
  1534. {
  1535. struct adt7475_data *data = i2c_get_clientdata(client);
  1536. unsigned int v;
  1537. data->pwm[CONTROL][index] = adt7475_read(PWM_CONFIG_REG(index));
  1538. /*
  1539. * Figure out the internal value for pwmctrl and pwmchan
  1540. * based on the current settings
  1541. */
  1542. v = (data->pwm[CONTROL][index] >> 5) & 7;
  1543. if (v == 3)
  1544. data->pwmctl[index] = 0;
  1545. else if (v == 7)
  1546. data->pwmctl[index] = 1;
  1547. else if (v == 4) {
  1548. /*
  1549. * The fan is disabled - we don't want to
  1550. * support that, so change to manual mode and
  1551. * set the duty cycle to 0 instead
  1552. */
  1553. data->pwm[INPUT][index] = 0;
  1554. data->pwm[CONTROL][index] &= ~0xE0;
  1555. data->pwm[CONTROL][index] |= (7 << 5);
  1556. i2c_smbus_write_byte_data(client, PWM_CONFIG_REG(index),
  1557. data->pwm[INPUT][index]);
  1558. i2c_smbus_write_byte_data(client, PWM_CONFIG_REG(index),
  1559. data->pwm[CONTROL][index]);
  1560. data->pwmctl[index] = 1;
  1561. } else {
  1562. data->pwmctl[index] = 2;
  1563. switch (v) {
  1564. case 0:
  1565. data->pwmchan[index] = 1;
  1566. break;
  1567. case 1:
  1568. data->pwmchan[index] = 2;
  1569. break;
  1570. case 2:
  1571. data->pwmchan[index] = 4;
  1572. break;
  1573. case 5:
  1574. data->pwmchan[index] = 6;
  1575. break;
  1576. case 6:
  1577. data->pwmchan[index] = 7;
  1578. break;
  1579. }
  1580. }
  1581. }
  1582. static int adt7475_update_measure(struct device *dev)
  1583. {
  1584. struct adt7475_data *data = dev_get_drvdata(dev);
  1585. struct i2c_client *client = data->client;
  1586. u16 ext;
  1587. int i;
  1588. int ret;
  1589. ret = adt7475_read(REG_STATUS2);
  1590. if (ret < 0)
  1591. return ret;
  1592. data->alarms = ret << 8;
  1593. ret = adt7475_read(REG_STATUS1);
  1594. if (ret < 0)
  1595. return ret;
  1596. data->alarms |= ret;
  1597. ret = adt7475_read(REG_EXTEND2);
  1598. if (ret < 0)
  1599. return ret;
  1600. ext = (ret << 8);
  1601. ret = adt7475_read(REG_EXTEND1);
  1602. if (ret < 0)
  1603. return ret;
  1604. ext |= ret;
  1605. for (i = 0; i < ADT7475_VOLTAGE_COUNT; i++) {
  1606. if (!(data->has_voltage & (1 << i)))
  1607. continue;
  1608. ret = adt7475_read(VOLTAGE_REG(i));
  1609. if (ret < 0)
  1610. return ret;
  1611. data->voltage[INPUT][i] =
  1612. (ret << 2) |
  1613. ((ext >> (i * 2)) & 3);
  1614. }
  1615. for (i = 0; i < ADT7475_TEMP_COUNT; i++) {
  1616. ret = adt7475_read(TEMP_REG(i));
  1617. if (ret < 0)
  1618. return ret;
  1619. data->temp[INPUT][i] =
  1620. (ret << 2) |
  1621. ((ext >> ((i + 5) * 2)) & 3);
  1622. }
  1623. if (data->has_voltage & (1 << 5)) {
  1624. ret = adt7475_read(REG_STATUS4);
  1625. if (ret < 0)
  1626. return ret;
  1627. data->alarms |= ret << 24;
  1628. ret = adt7475_read(REG_EXTEND3);
  1629. if (ret < 0)
  1630. return ret;
  1631. ext = ret;
  1632. ret = adt7475_read(REG_VTT);
  1633. if (ret < 0)
  1634. return ret;
  1635. data->voltage[INPUT][5] = ret << 2 |
  1636. ((ext >> 4) & 3);
  1637. }
  1638. for (i = 0; i < ADT7475_TACH_COUNT; i++) {
  1639. if (i == 3 && !data->has_fan4)
  1640. continue;
  1641. ret = adt7475_read_word(client, TACH_REG(i));
  1642. if (ret < 0)
  1643. return ret;
  1644. data->tach[INPUT][i] = ret;
  1645. }
  1646. /* Updated by hw when in auto mode */
  1647. for (i = 0; i < ADT7475_PWM_COUNT; i++) {
  1648. if (i == 1 && !data->has_pwm2)
  1649. continue;
  1650. ret = adt7475_read(PWM_REG(i));
  1651. if (ret < 0)
  1652. return ret;
  1653. data->pwm[INPUT][i] = ret;
  1654. }
  1655. if (data->has_vid) {
  1656. ret = adt7475_read(REG_VID);
  1657. if (ret < 0)
  1658. return ret;
  1659. data->vid = ret & 0x3f;
  1660. }
  1661. return 0;
  1662. }
  1663. static struct adt7475_data *adt7475_update_device(struct device *dev)
  1664. {
  1665. struct adt7475_data *data = dev_get_drvdata(dev);
  1666. int ret;
  1667. mutex_lock(&data->lock);
  1668. /* Measurement values update every 2 seconds */
  1669. if (time_after(jiffies, data->measure_updated + HZ * 2) ||
  1670. !data->valid) {
  1671. ret = adt7475_update_measure(dev);
  1672. if (ret) {
  1673. data->valid = false;
  1674. mutex_unlock(&data->lock);
  1675. return ERR_PTR(ret);
  1676. }
  1677. data->measure_updated = jiffies;
  1678. data->valid = true;
  1679. }
  1680. mutex_unlock(&data->lock);
  1681. return data;
  1682. }
  1683. module_i2c_driver(adt7475_driver);
  1684. MODULE_AUTHOR("Advanced Micro Devices, Inc");
  1685. MODULE_DESCRIPTION("adt7475 driver");
  1686. MODULE_LICENSE("GPL");