1 | // SPDX-License-Identifier: GPL-2.0-or-later |
2 | /* |
3 | * vt1211.c - driver for the VIA VT1211 Super-I/O chip integrated hardware |
4 | * monitoring features |
5 | * Copyright (C) 2006 Juerg Haefliger <juergh@gmail.com> |
6 | * |
7 | * This driver is based on the driver for kernel 2.4 by Mark D. Studebaker |
8 | * and its port to kernel 2.6 by Lars Ekman. |
9 | */ |
10 | |
11 | #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt |
12 | |
13 | #include <linux/module.h> |
14 | #include <linux/init.h> |
15 | #include <linux/slab.h> |
16 | #include <linux/jiffies.h> |
17 | #include <linux/platform_device.h> |
18 | #include <linux/hwmon.h> |
19 | #include <linux/hwmon-sysfs.h> |
20 | #include <linux/hwmon-vid.h> |
21 | #include <linux/err.h> |
22 | #include <linux/mutex.h> |
23 | #include <linux/ioport.h> |
24 | #include <linux/acpi.h> |
25 | #include <linux/io.h> |
26 | |
27 | static int uch_config = -1; |
28 | module_param(uch_config, int, 0); |
29 | MODULE_PARM_DESC(uch_config, "Initialize the universal channel configuration" ); |
30 | |
31 | static int int_mode = -1; |
32 | module_param(int_mode, int, 0); |
33 | MODULE_PARM_DESC(int_mode, "Force the temperature interrupt mode" ); |
34 | |
35 | static unsigned short force_id; |
36 | module_param(force_id, ushort, 0); |
37 | MODULE_PARM_DESC(force_id, "Override the detected device ID" ); |
38 | |
39 | static struct platform_device *pdev; |
40 | |
41 | #define DRVNAME "vt1211" |
42 | |
43 | /* --------------------------------------------------------------------- |
44 | * Registers |
45 | * |
46 | * The sensors are defined as follows. |
47 | * |
48 | * Sensor Voltage Mode Temp Mode Notes (from the datasheet) |
49 | * -------- ------------ --------- -------------------------- |
50 | * Reading 1 temp1 Intel thermal diode |
51 | * Reading 3 temp2 Internal thermal diode |
52 | * UCH1/Reading2 in0 temp3 NTC type thermistor |
53 | * UCH2 in1 temp4 +2.5V |
54 | * UCH3 in2 temp5 VccP |
55 | * UCH4 in3 temp6 +5V |
56 | * UCH5 in4 temp7 +12V |
57 | * 3.3V in5 Internal VDD (+3.3V) |
58 | * |
59 | * --------------------------------------------------------------------- */ |
60 | |
61 | /* Voltages (in) numbered 0-5 (ix) */ |
62 | #define VT1211_REG_IN(ix) (0x21 + (ix)) |
63 | #define VT1211_REG_IN_MIN(ix) ((ix) == 0 ? 0x3e : 0x2a + 2 * (ix)) |
64 | #define VT1211_REG_IN_MAX(ix) ((ix) == 0 ? 0x3d : 0x29 + 2 * (ix)) |
65 | |
66 | /* Temperatures (temp) numbered 0-6 (ix) */ |
67 | static u8 regtemp[] = {0x1f, 0x20, 0x21, 0x22, 0x23, 0x24, 0x25}; |
68 | static u8 regtempmax[] = {0x39, 0x1d, 0x3d, 0x2b, 0x2d, 0x2f, 0x31}; |
69 | static u8 regtemphyst[] = {0x3a, 0x1e, 0x3e, 0x2c, 0x2e, 0x30, 0x32}; |
70 | |
71 | /* Fans numbered 0-1 (ix) */ |
72 | #define VT1211_REG_FAN(ix) (0x29 + (ix)) |
73 | #define VT1211_REG_FAN_MIN(ix) (0x3b + (ix)) |
74 | #define VT1211_REG_FAN_DIV 0x47 |
75 | |
76 | /* PWMs numbered 0-1 (ix) */ |
77 | /* Auto points numbered 0-3 (ap) */ |
78 | #define VT1211_REG_PWM(ix) (0x60 + (ix)) |
79 | #define VT1211_REG_PWM_CLK 0x50 |
80 | #define VT1211_REG_PWM_CTL 0x51 |
81 | #define VT1211_REG_PWM_AUTO_TEMP(ap) (0x55 - (ap)) |
82 | #define VT1211_REG_PWM_AUTO_PWM(ix, ap) (0x58 + 2 * (ix) - (ap)) |
83 | |
84 | /* Miscellaneous registers */ |
85 | #define VT1211_REG_CONFIG 0x40 |
86 | #define VT1211_REG_ALARM1 0x41 |
87 | #define VT1211_REG_ALARM2 0x42 |
88 | #define VT1211_REG_VID 0x45 |
89 | #define VT1211_REG_UCH_CONFIG 0x4a |
90 | #define VT1211_REG_TEMP1_CONFIG 0x4b |
91 | #define VT1211_REG_TEMP2_CONFIG 0x4c |
92 | |
93 | /* In, temp & fan alarm bits */ |
94 | static const u8 bitalarmin[] = {11, 0, 1, 3, 8, 2, 9}; |
95 | static const u8 bitalarmtemp[] = {4, 15, 11, 0, 1, 3, 8}; |
96 | static const u8 bitalarmfan[] = {6, 7}; |
97 | |
98 | /* --------------------------------------------------------------------- |
99 | * Data structures and manipulation thereof |
100 | * --------------------------------------------------------------------- */ |
101 | |
102 | struct vt1211_data { |
103 | unsigned short addr; |
104 | const char *name; |
105 | struct device *hwmon_dev; |
106 | |
107 | struct mutex update_lock; |
108 | bool valid; /* true if following fields are valid */ |
109 | unsigned long last_updated; /* In jiffies */ |
110 | |
111 | /* Register values */ |
112 | u8 in[6]; |
113 | u8 in_max[6]; |
114 | u8 in_min[6]; |
115 | u8 temp[7]; |
116 | u8 temp_max[7]; |
117 | u8 temp_hyst[7]; |
118 | u8 fan[2]; |
119 | u8 fan_min[2]; |
120 | u8 fan_div[2]; |
121 | u8 fan_ctl; |
122 | u8 pwm[2]; |
123 | u8 pwm_ctl[2]; |
124 | u8 pwm_clk; |
125 | u8 pwm_auto_temp[4]; |
126 | u8 pwm_auto_pwm[2][4]; |
127 | u8 vid; /* Read once at init time */ |
128 | u8 vrm; |
129 | u8 uch_config; /* Read once at init time */ |
130 | u16 alarms; |
131 | }; |
132 | |
133 | /* ix = [0-5] */ |
134 | #define ISVOLT(ix, uch_config) ((ix) > 4 ? 1 : \ |
135 | !(((uch_config) >> ((ix) + 2)) & 1)) |
136 | |
137 | /* ix = [0-6] */ |
138 | #define ISTEMP(ix, uch_config) ((ix) < 2 ? 1 : \ |
139 | ((uch_config) >> (ix)) & 1) |
140 | |
141 | /* |
142 | * in5 (ix = 5) is special. It's the internal 3.3V so it's scaled in the |
143 | * driver according to the VT1211 BIOS porting guide |
144 | */ |
145 | #define IN_FROM_REG(ix, reg) ((reg) < 3 ? 0 : (ix) == 5 ? \ |
146 | (((reg) - 3) * 15882 + 479) / 958 : \ |
147 | (((reg) - 3) * 10000 + 479) / 958) |
148 | #define IN_TO_REG(ix, val) (clamp_val((ix) == 5 ? \ |
149 | ((val) * 958 + 7941) / 15882 + 3 : \ |
150 | ((val) * 958 + 5000) / 10000 + 3, 0, 255)) |
151 | |
152 | /* |
153 | * temp1 (ix = 0) is an intel thermal diode which is scaled in user space. |
154 | * temp2 (ix = 1) is the internal temp diode so it's scaled in the driver |
155 | * according to some measurements that I took on an EPIA M10000. |
156 | * temp3-7 are thermistor based so the driver returns the voltage measured at |
157 | * the pin (range 0V - 2.2V). |
158 | */ |
159 | #define TEMP_FROM_REG(ix, reg) ((ix) == 0 ? (reg) * 1000 : \ |
160 | (ix) == 1 ? (reg) < 51 ? 0 : \ |
161 | ((reg) - 51) * 1000 : \ |
162 | ((253 - (reg)) * 2200 + 105) / 210) |
163 | #define TEMP_TO_REG(ix, val) clamp_val( \ |
164 | ((ix) == 0 ? ((val) + 500) / 1000 : \ |
165 | (ix) == 1 ? ((val) + 500) / 1000 + 51 : \ |
166 | 253 - ((val) * 210 + 1100) / 2200), 0, 255) |
167 | |
168 | #define DIV_FROM_REG(reg) (1 << (reg)) |
169 | |
170 | #define RPM_FROM_REG(reg, div) (((reg) == 0) || ((reg) == 255) ? 0 : \ |
171 | 1310720 / (reg) / DIV_FROM_REG(div)) |
172 | #define RPM_TO_REG(val, div) ((val) == 0 ? 255 : \ |
173 | clamp_val((1310720 / (val) / \ |
174 | DIV_FROM_REG(div)), 1, 254)) |
175 | |
176 | /* --------------------------------------------------------------------- |
177 | * Super-I/O constants and functions |
178 | * --------------------------------------------------------------------- */ |
179 | |
180 | /* |
181 | * Configuration index port registers |
182 | * The vt1211 can live at 2 different addresses so we need to probe both |
183 | */ |
184 | #define SIO_REG_CIP1 0x2e |
185 | #define SIO_REG_CIP2 0x4e |
186 | |
187 | /* Configuration registers */ |
188 | #define SIO_VT1211_LDN 0x07 /* logical device number */ |
189 | #define SIO_VT1211_DEVID 0x20 /* device ID */ |
190 | #define SIO_VT1211_DEVREV 0x21 /* device revision */ |
191 | #define SIO_VT1211_ACTIVE 0x30 /* HW monitor active */ |
192 | #define SIO_VT1211_BADDR 0x60 /* base I/O address */ |
193 | #define SIO_VT1211_ID 0x3c /* VT1211 device ID */ |
194 | |
195 | /* VT1211 logical device numbers */ |
196 | #define SIO_VT1211_LDN_HWMON 0x0b /* HW monitor */ |
197 | |
198 | static inline int superio_inb(int sio_cip, int reg) |
199 | { |
200 | outb(value: reg, port: sio_cip); |
201 | return inb(port: sio_cip + 1); |
202 | } |
203 | |
204 | static inline void superio_select(int sio_cip, int ldn) |
205 | { |
206 | outb(SIO_VT1211_LDN, port: sio_cip); |
207 | outb(value: ldn, port: sio_cip + 1); |
208 | } |
209 | |
210 | static inline int superio_enter(int sio_cip) |
211 | { |
212 | if (!request_muxed_region(sio_cip, 2, DRVNAME)) |
213 | return -EBUSY; |
214 | |
215 | outb(value: 0x87, port: sio_cip); |
216 | outb(value: 0x87, port: sio_cip); |
217 | |
218 | return 0; |
219 | } |
220 | |
221 | static inline void superio_exit(int sio_cip) |
222 | { |
223 | outb(value: 0xaa, port: sio_cip); |
224 | release_region(sio_cip, 2); |
225 | } |
226 | |
227 | /* --------------------------------------------------------------------- |
228 | * Device I/O access |
229 | * --------------------------------------------------------------------- */ |
230 | |
231 | static inline u8 vt1211_read8(struct vt1211_data *data, u8 reg) |
232 | { |
233 | return inb(port: data->addr + reg); |
234 | } |
235 | |
236 | static inline void vt1211_write8(struct vt1211_data *data, u8 reg, u8 val) |
237 | { |
238 | outb(value: val, port: data->addr + reg); |
239 | } |
240 | |
241 | static struct vt1211_data *vt1211_update_device(struct device *dev) |
242 | { |
243 | struct vt1211_data *data = dev_get_drvdata(dev); |
244 | int ix, val; |
245 | |
246 | mutex_lock(&data->update_lock); |
247 | |
248 | /* registers cache is refreshed after 1 second */ |
249 | if (time_after(jiffies, data->last_updated + HZ) || !data->valid) { |
250 | /* read VID */ |
251 | data->vid = vt1211_read8(data, VT1211_REG_VID) & 0x1f; |
252 | |
253 | /* voltage (in) registers */ |
254 | for (ix = 0; ix < ARRAY_SIZE(data->in); ix++) { |
255 | if (ISVOLT(ix, data->uch_config)) { |
256 | data->in[ix] = vt1211_read8(data, |
257 | VT1211_REG_IN(ix)); |
258 | data->in_min[ix] = vt1211_read8(data, |
259 | VT1211_REG_IN_MIN(ix)); |
260 | data->in_max[ix] = vt1211_read8(data, |
261 | VT1211_REG_IN_MAX(ix)); |
262 | } |
263 | } |
264 | |
265 | /* temp registers */ |
266 | for (ix = 0; ix < ARRAY_SIZE(data->temp); ix++) { |
267 | if (ISTEMP(ix, data->uch_config)) { |
268 | data->temp[ix] = vt1211_read8(data, |
269 | reg: regtemp[ix]); |
270 | data->temp_max[ix] = vt1211_read8(data, |
271 | reg: regtempmax[ix]); |
272 | data->temp_hyst[ix] = vt1211_read8(data, |
273 | reg: regtemphyst[ix]); |
274 | } |
275 | } |
276 | |
277 | /* fan & pwm registers */ |
278 | for (ix = 0; ix < ARRAY_SIZE(data->fan); ix++) { |
279 | data->fan[ix] = vt1211_read8(data, |
280 | VT1211_REG_FAN(ix)); |
281 | data->fan_min[ix] = vt1211_read8(data, |
282 | VT1211_REG_FAN_MIN(ix)); |
283 | data->pwm[ix] = vt1211_read8(data, |
284 | VT1211_REG_PWM(ix)); |
285 | } |
286 | val = vt1211_read8(data, VT1211_REG_FAN_DIV); |
287 | data->fan_div[0] = (val >> 4) & 3; |
288 | data->fan_div[1] = (val >> 6) & 3; |
289 | data->fan_ctl = val & 0xf; |
290 | |
291 | val = vt1211_read8(data, VT1211_REG_PWM_CTL); |
292 | data->pwm_ctl[0] = val & 0xf; |
293 | data->pwm_ctl[1] = (val >> 4) & 0xf; |
294 | |
295 | data->pwm_clk = vt1211_read8(data, VT1211_REG_PWM_CLK); |
296 | |
297 | /* pwm & temp auto point registers */ |
298 | data->pwm_auto_pwm[0][1] = vt1211_read8(data, |
299 | VT1211_REG_PWM_AUTO_PWM(0, 1)); |
300 | data->pwm_auto_pwm[0][2] = vt1211_read8(data, |
301 | VT1211_REG_PWM_AUTO_PWM(0, 2)); |
302 | data->pwm_auto_pwm[1][1] = vt1211_read8(data, |
303 | VT1211_REG_PWM_AUTO_PWM(1, 1)); |
304 | data->pwm_auto_pwm[1][2] = vt1211_read8(data, |
305 | VT1211_REG_PWM_AUTO_PWM(1, 2)); |
306 | for (ix = 0; ix < ARRAY_SIZE(data->pwm_auto_temp); ix++) { |
307 | data->pwm_auto_temp[ix] = vt1211_read8(data, |
308 | VT1211_REG_PWM_AUTO_TEMP(ix)); |
309 | } |
310 | |
311 | /* alarm registers */ |
312 | data->alarms = (vt1211_read8(data, VT1211_REG_ALARM2) << 8) | |
313 | vt1211_read8(data, VT1211_REG_ALARM1); |
314 | |
315 | data->last_updated = jiffies; |
316 | data->valid = true; |
317 | } |
318 | |
319 | mutex_unlock(lock: &data->update_lock); |
320 | |
321 | return data; |
322 | } |
323 | |
324 | /* --------------------------------------------------------------------- |
325 | * Voltage sysfs interfaces |
326 | * ix = [0-5] |
327 | * --------------------------------------------------------------------- */ |
328 | |
329 | #define SHOW_IN_INPUT 0 |
330 | #define SHOW_SET_IN_MIN 1 |
331 | #define SHOW_SET_IN_MAX 2 |
332 | #define SHOW_IN_ALARM 3 |
333 | |
334 | static ssize_t show_in(struct device *dev, struct device_attribute *attr, |
335 | char *buf) |
336 | { |
337 | struct vt1211_data *data = vt1211_update_device(dev); |
338 | struct sensor_device_attribute_2 *sensor_attr_2 = |
339 | to_sensor_dev_attr_2(attr); |
340 | int ix = sensor_attr_2->index; |
341 | int fn = sensor_attr_2->nr; |
342 | int res; |
343 | |
344 | switch (fn) { |
345 | case SHOW_IN_INPUT: |
346 | res = IN_FROM_REG(ix, data->in[ix]); |
347 | break; |
348 | case SHOW_SET_IN_MIN: |
349 | res = IN_FROM_REG(ix, data->in_min[ix]); |
350 | break; |
351 | case SHOW_SET_IN_MAX: |
352 | res = IN_FROM_REG(ix, data->in_max[ix]); |
353 | break; |
354 | case SHOW_IN_ALARM: |
355 | res = (data->alarms >> bitalarmin[ix]) & 1; |
356 | break; |
357 | default: |
358 | res = 0; |
359 | dev_dbg(dev, "Unknown attr fetch (%d)\n" , fn); |
360 | } |
361 | |
362 | return sprintf(buf, fmt: "%d\n" , res); |
363 | } |
364 | |
365 | static ssize_t set_in(struct device *dev, struct device_attribute *attr, |
366 | const char *buf, size_t count) |
367 | { |
368 | struct vt1211_data *data = dev_get_drvdata(dev); |
369 | struct sensor_device_attribute_2 *sensor_attr_2 = |
370 | to_sensor_dev_attr_2(attr); |
371 | int ix = sensor_attr_2->index; |
372 | int fn = sensor_attr_2->nr; |
373 | long val; |
374 | int err; |
375 | |
376 | err = kstrtol(s: buf, base: 10, res: &val); |
377 | if (err) |
378 | return err; |
379 | |
380 | mutex_lock(&data->update_lock); |
381 | switch (fn) { |
382 | case SHOW_SET_IN_MIN: |
383 | data->in_min[ix] = IN_TO_REG(ix, val); |
384 | vt1211_write8(data, VT1211_REG_IN_MIN(ix), val: data->in_min[ix]); |
385 | break; |
386 | case SHOW_SET_IN_MAX: |
387 | data->in_max[ix] = IN_TO_REG(ix, val); |
388 | vt1211_write8(data, VT1211_REG_IN_MAX(ix), val: data->in_max[ix]); |
389 | break; |
390 | default: |
391 | dev_dbg(dev, "Unknown attr fetch (%d)\n" , fn); |
392 | } |
393 | mutex_unlock(lock: &data->update_lock); |
394 | |
395 | return count; |
396 | } |
397 | |
398 | /* --------------------------------------------------------------------- |
399 | * Temperature sysfs interfaces |
400 | * ix = [0-6] |
401 | * --------------------------------------------------------------------- */ |
402 | |
403 | #define SHOW_TEMP_INPUT 0 |
404 | #define SHOW_SET_TEMP_MAX 1 |
405 | #define SHOW_SET_TEMP_MAX_HYST 2 |
406 | #define SHOW_TEMP_ALARM 3 |
407 | |
408 | static ssize_t show_temp(struct device *dev, struct device_attribute *attr, |
409 | char *buf) |
410 | { |
411 | struct vt1211_data *data = vt1211_update_device(dev); |
412 | struct sensor_device_attribute_2 *sensor_attr_2 = |
413 | to_sensor_dev_attr_2(attr); |
414 | int ix = sensor_attr_2->index; |
415 | int fn = sensor_attr_2->nr; |
416 | int res; |
417 | |
418 | switch (fn) { |
419 | case SHOW_TEMP_INPUT: |
420 | res = TEMP_FROM_REG(ix, data->temp[ix]); |
421 | break; |
422 | case SHOW_SET_TEMP_MAX: |
423 | res = TEMP_FROM_REG(ix, data->temp_max[ix]); |
424 | break; |
425 | case SHOW_SET_TEMP_MAX_HYST: |
426 | res = TEMP_FROM_REG(ix, data->temp_hyst[ix]); |
427 | break; |
428 | case SHOW_TEMP_ALARM: |
429 | res = (data->alarms >> bitalarmtemp[ix]) & 1; |
430 | break; |
431 | default: |
432 | res = 0; |
433 | dev_dbg(dev, "Unknown attr fetch (%d)\n" , fn); |
434 | } |
435 | |
436 | return sprintf(buf, fmt: "%d\n" , res); |
437 | } |
438 | |
439 | static ssize_t set_temp(struct device *dev, struct device_attribute *attr, |
440 | const char *buf, size_t count) |
441 | { |
442 | struct vt1211_data *data = dev_get_drvdata(dev); |
443 | struct sensor_device_attribute_2 *sensor_attr_2 = |
444 | to_sensor_dev_attr_2(attr); |
445 | int ix = sensor_attr_2->index; |
446 | int fn = sensor_attr_2->nr; |
447 | long val; |
448 | int err; |
449 | |
450 | err = kstrtol(s: buf, base: 10, res: &val); |
451 | if (err) |
452 | return err; |
453 | |
454 | mutex_lock(&data->update_lock); |
455 | switch (fn) { |
456 | case SHOW_SET_TEMP_MAX: |
457 | data->temp_max[ix] = TEMP_TO_REG(ix, val); |
458 | vt1211_write8(data, reg: regtempmax[ix], |
459 | val: data->temp_max[ix]); |
460 | break; |
461 | case SHOW_SET_TEMP_MAX_HYST: |
462 | data->temp_hyst[ix] = TEMP_TO_REG(ix, val); |
463 | vt1211_write8(data, reg: regtemphyst[ix], |
464 | val: data->temp_hyst[ix]); |
465 | break; |
466 | default: |
467 | dev_dbg(dev, "Unknown attr fetch (%d)\n" , fn); |
468 | } |
469 | mutex_unlock(lock: &data->update_lock); |
470 | |
471 | return count; |
472 | } |
473 | |
474 | /* --------------------------------------------------------------------- |
475 | * Fan sysfs interfaces |
476 | * ix = [0-1] |
477 | * --------------------------------------------------------------------- */ |
478 | |
479 | #define SHOW_FAN_INPUT 0 |
480 | #define SHOW_SET_FAN_MIN 1 |
481 | #define SHOW_SET_FAN_DIV 2 |
482 | #define SHOW_FAN_ALARM 3 |
483 | |
484 | static ssize_t show_fan(struct device *dev, struct device_attribute *attr, |
485 | char *buf) |
486 | { |
487 | struct vt1211_data *data = vt1211_update_device(dev); |
488 | struct sensor_device_attribute_2 *sensor_attr_2 = |
489 | to_sensor_dev_attr_2(attr); |
490 | int ix = sensor_attr_2->index; |
491 | int fn = sensor_attr_2->nr; |
492 | int res; |
493 | |
494 | switch (fn) { |
495 | case SHOW_FAN_INPUT: |
496 | res = RPM_FROM_REG(data->fan[ix], data->fan_div[ix]); |
497 | break; |
498 | case SHOW_SET_FAN_MIN: |
499 | res = RPM_FROM_REG(data->fan_min[ix], data->fan_div[ix]); |
500 | break; |
501 | case SHOW_SET_FAN_DIV: |
502 | res = DIV_FROM_REG(data->fan_div[ix]); |
503 | break; |
504 | case SHOW_FAN_ALARM: |
505 | res = (data->alarms >> bitalarmfan[ix]) & 1; |
506 | break; |
507 | default: |
508 | res = 0; |
509 | dev_dbg(dev, "Unknown attr fetch (%d)\n" , fn); |
510 | } |
511 | |
512 | return sprintf(buf, fmt: "%d\n" , res); |
513 | } |
514 | |
515 | static ssize_t set_fan(struct device *dev, struct device_attribute *attr, |
516 | const char *buf, size_t count) |
517 | { |
518 | struct vt1211_data *data = dev_get_drvdata(dev); |
519 | struct sensor_device_attribute_2 *sensor_attr_2 = |
520 | to_sensor_dev_attr_2(attr); |
521 | int ix = sensor_attr_2->index; |
522 | int fn = sensor_attr_2->nr; |
523 | int reg; |
524 | unsigned long val; |
525 | int err; |
526 | |
527 | err = kstrtoul(s: buf, base: 10, res: &val); |
528 | if (err) |
529 | return err; |
530 | |
531 | mutex_lock(&data->update_lock); |
532 | |
533 | /* sync the data cache */ |
534 | reg = vt1211_read8(data, VT1211_REG_FAN_DIV); |
535 | data->fan_div[0] = (reg >> 4) & 3; |
536 | data->fan_div[1] = (reg >> 6) & 3; |
537 | data->fan_ctl = reg & 0xf; |
538 | |
539 | switch (fn) { |
540 | case SHOW_SET_FAN_MIN: |
541 | data->fan_min[ix] = RPM_TO_REG(val, data->fan_div[ix]); |
542 | vt1211_write8(data, VT1211_REG_FAN_MIN(ix), |
543 | val: data->fan_min[ix]); |
544 | break; |
545 | case SHOW_SET_FAN_DIV: |
546 | switch (val) { |
547 | case 1: |
548 | data->fan_div[ix] = 0; |
549 | break; |
550 | case 2: |
551 | data->fan_div[ix] = 1; |
552 | break; |
553 | case 4: |
554 | data->fan_div[ix] = 2; |
555 | break; |
556 | case 8: |
557 | data->fan_div[ix] = 3; |
558 | break; |
559 | default: |
560 | count = -EINVAL; |
561 | dev_warn(dev, |
562 | "fan div value %ld not supported. Choose one of 1, 2, 4, or 8.\n" , |
563 | val); |
564 | goto EXIT; |
565 | } |
566 | vt1211_write8(data, VT1211_REG_FAN_DIV, |
567 | val: ((data->fan_div[1] << 6) | |
568 | (data->fan_div[0] << 4) | |
569 | data->fan_ctl)); |
570 | break; |
571 | default: |
572 | dev_dbg(dev, "Unknown attr fetch (%d)\n" , fn); |
573 | } |
574 | |
575 | EXIT: |
576 | mutex_unlock(lock: &data->update_lock); |
577 | return count; |
578 | } |
579 | |
580 | /* --------------------------------------------------------------------- |
581 | * PWM sysfs interfaces |
582 | * ix = [0-1] |
583 | * --------------------------------------------------------------------- */ |
584 | |
585 | #define SHOW_PWM 0 |
586 | #define SHOW_SET_PWM_ENABLE 1 |
587 | #define SHOW_SET_PWM_FREQ 2 |
588 | #define SHOW_SET_PWM_AUTO_CHANNELS_TEMP 3 |
589 | |
590 | static ssize_t show_pwm(struct device *dev, struct device_attribute *attr, |
591 | char *buf) |
592 | { |
593 | struct vt1211_data *data = vt1211_update_device(dev); |
594 | struct sensor_device_attribute_2 *sensor_attr_2 = |
595 | to_sensor_dev_attr_2(attr); |
596 | int ix = sensor_attr_2->index; |
597 | int fn = sensor_attr_2->nr; |
598 | int res; |
599 | |
600 | switch (fn) { |
601 | case SHOW_PWM: |
602 | res = data->pwm[ix]; |
603 | break; |
604 | case SHOW_SET_PWM_ENABLE: |
605 | res = ((data->pwm_ctl[ix] >> 3) & 1) ? 2 : 0; |
606 | break; |
607 | case SHOW_SET_PWM_FREQ: |
608 | res = 90000 >> (data->pwm_clk & 7); |
609 | break; |
610 | case SHOW_SET_PWM_AUTO_CHANNELS_TEMP: |
611 | res = (data->pwm_ctl[ix] & 7) + 1; |
612 | break; |
613 | default: |
614 | res = 0; |
615 | dev_dbg(dev, "Unknown attr fetch (%d)\n" , fn); |
616 | } |
617 | |
618 | return sprintf(buf, fmt: "%d\n" , res); |
619 | } |
620 | |
621 | static ssize_t set_pwm(struct device *dev, struct device_attribute *attr, |
622 | const char *buf, size_t count) |
623 | { |
624 | struct vt1211_data *data = dev_get_drvdata(dev); |
625 | struct sensor_device_attribute_2 *sensor_attr_2 = |
626 | to_sensor_dev_attr_2(attr); |
627 | int ix = sensor_attr_2->index; |
628 | int fn = sensor_attr_2->nr; |
629 | int tmp, reg; |
630 | unsigned long val; |
631 | int err; |
632 | |
633 | err = kstrtoul(s: buf, base: 10, res: &val); |
634 | if (err) |
635 | return err; |
636 | |
637 | mutex_lock(&data->update_lock); |
638 | |
639 | switch (fn) { |
640 | case SHOW_SET_PWM_ENABLE: |
641 | /* sync the data cache */ |
642 | reg = vt1211_read8(data, VT1211_REG_FAN_DIV); |
643 | data->fan_div[0] = (reg >> 4) & 3; |
644 | data->fan_div[1] = (reg >> 6) & 3; |
645 | data->fan_ctl = reg & 0xf; |
646 | reg = vt1211_read8(data, VT1211_REG_PWM_CTL); |
647 | data->pwm_ctl[0] = reg & 0xf; |
648 | data->pwm_ctl[1] = (reg >> 4) & 0xf; |
649 | switch (val) { |
650 | case 0: |
651 | data->pwm_ctl[ix] &= 7; |
652 | /* |
653 | * disable SmartGuardian if both PWM outputs are |
654 | * disabled |
655 | */ |
656 | if ((data->pwm_ctl[ix ^ 1] & 1) == 0) |
657 | data->fan_ctl &= 0xe; |
658 | break; |
659 | case 2: |
660 | data->pwm_ctl[ix] |= 8; |
661 | data->fan_ctl |= 1; |
662 | break; |
663 | default: |
664 | count = -EINVAL; |
665 | dev_warn(dev, |
666 | "pwm mode %ld not supported. Choose one of 0 or 2.\n" , |
667 | val); |
668 | goto EXIT; |
669 | } |
670 | vt1211_write8(data, VT1211_REG_PWM_CTL, |
671 | val: ((data->pwm_ctl[1] << 4) | |
672 | data->pwm_ctl[0])); |
673 | vt1211_write8(data, VT1211_REG_FAN_DIV, |
674 | val: ((data->fan_div[1] << 6) | |
675 | (data->fan_div[0] << 4) | |
676 | data->fan_ctl)); |
677 | break; |
678 | case SHOW_SET_PWM_FREQ: |
679 | val = 135000 / clamp_val(val, 135000 >> 7, 135000); |
680 | /* calculate tmp = log2(val) */ |
681 | tmp = 0; |
682 | for (val >>= 1; val > 0; val >>= 1) |
683 | tmp++; |
684 | /* sync the data cache */ |
685 | reg = vt1211_read8(data, VT1211_REG_PWM_CLK); |
686 | data->pwm_clk = (reg & 0xf8) | tmp; |
687 | vt1211_write8(data, VT1211_REG_PWM_CLK, val: data->pwm_clk); |
688 | break; |
689 | case SHOW_SET_PWM_AUTO_CHANNELS_TEMP: |
690 | if (val < 1 || val > 7) { |
691 | count = -EINVAL; |
692 | dev_warn(dev, |
693 | "temp channel %ld not supported. Choose a value between 1 and 7.\n" , |
694 | val); |
695 | goto EXIT; |
696 | } |
697 | if (!ISTEMP(val - 1, data->uch_config)) { |
698 | count = -EINVAL; |
699 | dev_warn(dev, "temp channel %ld is not available.\n" , |
700 | val); |
701 | goto EXIT; |
702 | } |
703 | /* sync the data cache */ |
704 | reg = vt1211_read8(data, VT1211_REG_PWM_CTL); |
705 | data->pwm_ctl[0] = reg & 0xf; |
706 | data->pwm_ctl[1] = (reg >> 4) & 0xf; |
707 | data->pwm_ctl[ix] = (data->pwm_ctl[ix] & 8) | (val - 1); |
708 | vt1211_write8(data, VT1211_REG_PWM_CTL, |
709 | val: ((data->pwm_ctl[1] << 4) | data->pwm_ctl[0])); |
710 | break; |
711 | default: |
712 | dev_dbg(dev, "Unknown attr fetch (%d)\n" , fn); |
713 | } |
714 | |
715 | EXIT: |
716 | mutex_unlock(lock: &data->update_lock); |
717 | return count; |
718 | } |
719 | |
720 | /* --------------------------------------------------------------------- |
721 | * PWM auto point definitions |
722 | * ix = [0-1] |
723 | * ap = [0-3] |
724 | * --------------------------------------------------------------------- */ |
725 | |
726 | /* |
727 | * pwm[ix+1]_auto_point[ap+1]_temp mapping table: |
728 | * Note that there is only a single set of temp auto points that controls both |
729 | * PWM controllers. We still create 2 sets of sysfs files to make it look |
730 | * more consistent even though they map to the same registers. |
731 | * |
732 | * ix ap : description |
733 | * ------------------- |
734 | * 0 0 : pwm1/2 off temperature (pwm_auto_temp[0]) |
735 | * 0 1 : pwm1/2 low speed temperature (pwm_auto_temp[1]) |
736 | * 0 2 : pwm1/2 high speed temperature (pwm_auto_temp[2]) |
737 | * 0 3 : pwm1/2 full speed temperature (pwm_auto_temp[3]) |
738 | * 1 0 : pwm1/2 off temperature (pwm_auto_temp[0]) |
739 | * 1 1 : pwm1/2 low speed temperature (pwm_auto_temp[1]) |
740 | * 1 2 : pwm1/2 high speed temperature (pwm_auto_temp[2]) |
741 | * 1 3 : pwm1/2 full speed temperature (pwm_auto_temp[3]) |
742 | */ |
743 | |
744 | static ssize_t show_pwm_auto_point_temp(struct device *dev, |
745 | struct device_attribute *attr, |
746 | char *buf) |
747 | { |
748 | struct vt1211_data *data = vt1211_update_device(dev); |
749 | struct sensor_device_attribute_2 *sensor_attr_2 = |
750 | to_sensor_dev_attr_2(attr); |
751 | int ix = sensor_attr_2->index; |
752 | int ap = sensor_attr_2->nr; |
753 | |
754 | return sprintf(buf, fmt: "%d\n" , TEMP_FROM_REG(data->pwm_ctl[ix] & 7, |
755 | data->pwm_auto_temp[ap])); |
756 | } |
757 | |
758 | static ssize_t set_pwm_auto_point_temp(struct device *dev, |
759 | struct device_attribute *attr, |
760 | const char *buf, size_t count) |
761 | { |
762 | struct vt1211_data *data = dev_get_drvdata(dev); |
763 | struct sensor_device_attribute_2 *sensor_attr_2 = |
764 | to_sensor_dev_attr_2(attr); |
765 | int ix = sensor_attr_2->index; |
766 | int ap = sensor_attr_2->nr; |
767 | int reg; |
768 | long val; |
769 | int err; |
770 | |
771 | err = kstrtol(s: buf, base: 10, res: &val); |
772 | if (err) |
773 | return err; |
774 | |
775 | |
776 | mutex_lock(&data->update_lock); |
777 | |
778 | /* sync the data cache */ |
779 | reg = vt1211_read8(data, VT1211_REG_PWM_CTL); |
780 | data->pwm_ctl[0] = reg & 0xf; |
781 | data->pwm_ctl[1] = (reg >> 4) & 0xf; |
782 | |
783 | data->pwm_auto_temp[ap] = TEMP_TO_REG(data->pwm_ctl[ix] & 7, val); |
784 | vt1211_write8(data, VT1211_REG_PWM_AUTO_TEMP(ap), |
785 | val: data->pwm_auto_temp[ap]); |
786 | mutex_unlock(lock: &data->update_lock); |
787 | |
788 | return count; |
789 | } |
790 | |
791 | /* |
792 | * pwm[ix+1]_auto_point[ap+1]_pwm mapping table: |
793 | * Note that the PWM auto points 0 & 3 are hard-wired in the VT1211 and can't |
794 | * be changed. |
795 | * |
796 | * ix ap : description |
797 | * ------------------- |
798 | * 0 0 : pwm1 off (pwm_auto_pwm[0][0], hard-wired to 0) |
799 | * 0 1 : pwm1 low speed duty cycle (pwm_auto_pwm[0][1]) |
800 | * 0 2 : pwm1 high speed duty cycle (pwm_auto_pwm[0][2]) |
801 | * 0 3 : pwm1 full speed (pwm_auto_pwm[0][3], hard-wired to 255) |
802 | * 1 0 : pwm2 off (pwm_auto_pwm[1][0], hard-wired to 0) |
803 | * 1 1 : pwm2 low speed duty cycle (pwm_auto_pwm[1][1]) |
804 | * 1 2 : pwm2 high speed duty cycle (pwm_auto_pwm[1][2]) |
805 | * 1 3 : pwm2 full speed (pwm_auto_pwm[1][3], hard-wired to 255) |
806 | */ |
807 | |
808 | static ssize_t show_pwm_auto_point_pwm(struct device *dev, |
809 | struct device_attribute *attr, |
810 | char *buf) |
811 | { |
812 | struct vt1211_data *data = vt1211_update_device(dev); |
813 | struct sensor_device_attribute_2 *sensor_attr_2 = |
814 | to_sensor_dev_attr_2(attr); |
815 | int ix = sensor_attr_2->index; |
816 | int ap = sensor_attr_2->nr; |
817 | |
818 | return sprintf(buf, fmt: "%d\n" , data->pwm_auto_pwm[ix][ap]); |
819 | } |
820 | |
821 | static ssize_t set_pwm_auto_point_pwm(struct device *dev, |
822 | struct device_attribute *attr, |
823 | const char *buf, size_t count) |
824 | { |
825 | struct vt1211_data *data = dev_get_drvdata(dev); |
826 | struct sensor_device_attribute_2 *sensor_attr_2 = |
827 | to_sensor_dev_attr_2(attr); |
828 | int ix = sensor_attr_2->index; |
829 | int ap = sensor_attr_2->nr; |
830 | unsigned long val; |
831 | int err; |
832 | |
833 | err = kstrtoul(s: buf, base: 10, res: &val); |
834 | if (err) |
835 | return err; |
836 | |
837 | mutex_lock(&data->update_lock); |
838 | data->pwm_auto_pwm[ix][ap] = clamp_val(val, 0, 255); |
839 | vt1211_write8(data, VT1211_REG_PWM_AUTO_PWM(ix, ap), |
840 | val: data->pwm_auto_pwm[ix][ap]); |
841 | mutex_unlock(lock: &data->update_lock); |
842 | |
843 | return count; |
844 | } |
845 | |
846 | /* --------------------------------------------------------------------- |
847 | * Miscellaneous sysfs interfaces (VRM, VID, name, and (legacy) alarms) |
848 | * --------------------------------------------------------------------- */ |
849 | |
850 | static ssize_t show_vrm(struct device *dev, struct device_attribute *attr, |
851 | char *buf) |
852 | { |
853 | struct vt1211_data *data = dev_get_drvdata(dev); |
854 | |
855 | return sprintf(buf, fmt: "%d\n" , data->vrm); |
856 | } |
857 | |
858 | static ssize_t set_vrm(struct device *dev, struct device_attribute *attr, |
859 | const char *buf, size_t count) |
860 | { |
861 | struct vt1211_data *data = dev_get_drvdata(dev); |
862 | unsigned long val; |
863 | int err; |
864 | |
865 | err = kstrtoul(s: buf, base: 10, res: &val); |
866 | if (err) |
867 | return err; |
868 | |
869 | if (val > 255) |
870 | return -EINVAL; |
871 | |
872 | data->vrm = val; |
873 | |
874 | return count; |
875 | } |
876 | |
877 | static ssize_t show_vid(struct device *dev, struct device_attribute *attr, |
878 | char *buf) |
879 | { |
880 | struct vt1211_data *data = dev_get_drvdata(dev); |
881 | |
882 | return sprintf(buf, fmt: "%d\n" , vid_from_reg(val: data->vid, vrm: data->vrm)); |
883 | } |
884 | |
885 | static ssize_t show_name(struct device *dev, |
886 | struct device_attribute *attr, char *buf) |
887 | { |
888 | struct vt1211_data *data = dev_get_drvdata(dev); |
889 | |
890 | return sprintf(buf, fmt: "%s\n" , data->name); |
891 | } |
892 | |
893 | static ssize_t show_alarms(struct device *dev, |
894 | struct device_attribute *attr, char *buf) |
895 | { |
896 | struct vt1211_data *data = vt1211_update_device(dev); |
897 | |
898 | return sprintf(buf, fmt: "%d\n" , data->alarms); |
899 | } |
900 | |
901 | /* --------------------------------------------------------------------- |
902 | * Device attribute structs |
903 | * --------------------------------------------------------------------- */ |
904 | |
905 | #define SENSOR_ATTR_IN(ix) \ |
906 | { SENSOR_ATTR_2(in##ix##_input, S_IRUGO, \ |
907 | show_in, NULL, SHOW_IN_INPUT, ix), \ |
908 | SENSOR_ATTR_2(in##ix##_min, S_IRUGO | S_IWUSR, \ |
909 | show_in, set_in, SHOW_SET_IN_MIN, ix), \ |
910 | SENSOR_ATTR_2(in##ix##_max, S_IRUGO | S_IWUSR, \ |
911 | show_in, set_in, SHOW_SET_IN_MAX, ix), \ |
912 | SENSOR_ATTR_2(in##ix##_alarm, S_IRUGO, \ |
913 | show_in, NULL, SHOW_IN_ALARM, ix) \ |
914 | } |
915 | |
916 | static struct sensor_device_attribute_2 vt1211_sysfs_in[][4] = { |
917 | SENSOR_ATTR_IN(0), |
918 | SENSOR_ATTR_IN(1), |
919 | SENSOR_ATTR_IN(2), |
920 | SENSOR_ATTR_IN(3), |
921 | SENSOR_ATTR_IN(4), |
922 | SENSOR_ATTR_IN(5) |
923 | }; |
924 | |
925 | #define IN_UNIT_ATTRS(X) \ |
926 | { &vt1211_sysfs_in[X][0].dev_attr.attr, \ |
927 | &vt1211_sysfs_in[X][1].dev_attr.attr, \ |
928 | &vt1211_sysfs_in[X][2].dev_attr.attr, \ |
929 | &vt1211_sysfs_in[X][3].dev_attr.attr, \ |
930 | NULL \ |
931 | } |
932 | |
933 | static struct attribute *vt1211_in_attr[][5] = { |
934 | IN_UNIT_ATTRS(0), |
935 | IN_UNIT_ATTRS(1), |
936 | IN_UNIT_ATTRS(2), |
937 | IN_UNIT_ATTRS(3), |
938 | IN_UNIT_ATTRS(4), |
939 | IN_UNIT_ATTRS(5) |
940 | }; |
941 | |
942 | static const struct attribute_group vt1211_in_attr_group[] = { |
943 | { .attrs = vt1211_in_attr[0] }, |
944 | { .attrs = vt1211_in_attr[1] }, |
945 | { .attrs = vt1211_in_attr[2] }, |
946 | { .attrs = vt1211_in_attr[3] }, |
947 | { .attrs = vt1211_in_attr[4] }, |
948 | { .attrs = vt1211_in_attr[5] } |
949 | }; |
950 | |
951 | #define SENSOR_ATTR_TEMP(ix) \ |
952 | { SENSOR_ATTR_2(temp##ix##_input, S_IRUGO, \ |
953 | show_temp, NULL, SHOW_TEMP_INPUT, ix-1), \ |
954 | SENSOR_ATTR_2(temp##ix##_max, S_IRUGO | S_IWUSR, \ |
955 | show_temp, set_temp, SHOW_SET_TEMP_MAX, ix-1), \ |
956 | SENSOR_ATTR_2(temp##ix##_max_hyst, S_IRUGO | S_IWUSR, \ |
957 | show_temp, set_temp, SHOW_SET_TEMP_MAX_HYST, ix-1), \ |
958 | SENSOR_ATTR_2(temp##ix##_alarm, S_IRUGO, \ |
959 | show_temp, NULL, SHOW_TEMP_ALARM, ix-1) \ |
960 | } |
961 | |
962 | static struct sensor_device_attribute_2 vt1211_sysfs_temp[][4] = { |
963 | SENSOR_ATTR_TEMP(1), |
964 | SENSOR_ATTR_TEMP(2), |
965 | SENSOR_ATTR_TEMP(3), |
966 | SENSOR_ATTR_TEMP(4), |
967 | SENSOR_ATTR_TEMP(5), |
968 | SENSOR_ATTR_TEMP(6), |
969 | SENSOR_ATTR_TEMP(7), |
970 | }; |
971 | |
972 | #define TEMP_UNIT_ATTRS(X) \ |
973 | { &vt1211_sysfs_temp[X][0].dev_attr.attr, \ |
974 | &vt1211_sysfs_temp[X][1].dev_attr.attr, \ |
975 | &vt1211_sysfs_temp[X][2].dev_attr.attr, \ |
976 | &vt1211_sysfs_temp[X][3].dev_attr.attr, \ |
977 | NULL \ |
978 | } |
979 | |
980 | static struct attribute *vt1211_temp_attr[][5] = { |
981 | TEMP_UNIT_ATTRS(0), |
982 | TEMP_UNIT_ATTRS(1), |
983 | TEMP_UNIT_ATTRS(2), |
984 | TEMP_UNIT_ATTRS(3), |
985 | TEMP_UNIT_ATTRS(4), |
986 | TEMP_UNIT_ATTRS(5), |
987 | TEMP_UNIT_ATTRS(6) |
988 | }; |
989 | |
990 | static const struct attribute_group vt1211_temp_attr_group[] = { |
991 | { .attrs = vt1211_temp_attr[0] }, |
992 | { .attrs = vt1211_temp_attr[1] }, |
993 | { .attrs = vt1211_temp_attr[2] }, |
994 | { .attrs = vt1211_temp_attr[3] }, |
995 | { .attrs = vt1211_temp_attr[4] }, |
996 | { .attrs = vt1211_temp_attr[5] }, |
997 | { .attrs = vt1211_temp_attr[6] } |
998 | }; |
999 | |
1000 | #define SENSOR_ATTR_FAN(ix) \ |
1001 | SENSOR_ATTR_2(fan##ix##_input, S_IRUGO, \ |
1002 | show_fan, NULL, SHOW_FAN_INPUT, ix-1), \ |
1003 | SENSOR_ATTR_2(fan##ix##_min, S_IRUGO | S_IWUSR, \ |
1004 | show_fan, set_fan, SHOW_SET_FAN_MIN, ix-1), \ |
1005 | SENSOR_ATTR_2(fan##ix##_div, S_IRUGO | S_IWUSR, \ |
1006 | show_fan, set_fan, SHOW_SET_FAN_DIV, ix-1), \ |
1007 | SENSOR_ATTR_2(fan##ix##_alarm, S_IRUGO, \ |
1008 | show_fan, NULL, SHOW_FAN_ALARM, ix-1) |
1009 | |
1010 | #define SENSOR_ATTR_PWM(ix) \ |
1011 | SENSOR_ATTR_2(pwm##ix, S_IRUGO, \ |
1012 | show_pwm, NULL, SHOW_PWM, ix-1), \ |
1013 | SENSOR_ATTR_2(pwm##ix##_enable, S_IRUGO | S_IWUSR, \ |
1014 | show_pwm, set_pwm, SHOW_SET_PWM_ENABLE, ix-1), \ |
1015 | SENSOR_ATTR_2(pwm##ix##_auto_channels_temp, S_IRUGO | S_IWUSR, \ |
1016 | show_pwm, set_pwm, SHOW_SET_PWM_AUTO_CHANNELS_TEMP, ix-1) |
1017 | |
1018 | #define SENSOR_ATTR_PWM_FREQ(ix) \ |
1019 | SENSOR_ATTR_2(pwm##ix##_freq, S_IRUGO | S_IWUSR, \ |
1020 | show_pwm, set_pwm, SHOW_SET_PWM_FREQ, ix-1) |
1021 | |
1022 | #define SENSOR_ATTR_PWM_FREQ_RO(ix) \ |
1023 | SENSOR_ATTR_2(pwm##ix##_freq, S_IRUGO, \ |
1024 | show_pwm, NULL, SHOW_SET_PWM_FREQ, ix-1) |
1025 | |
1026 | #define SENSOR_ATTR_PWM_AUTO_POINT_TEMP(ix, ap) \ |
1027 | SENSOR_ATTR_2(pwm##ix##_auto_point##ap##_temp, S_IRUGO | S_IWUSR, \ |
1028 | show_pwm_auto_point_temp, set_pwm_auto_point_temp, \ |
1029 | ap-1, ix-1) |
1030 | |
1031 | #define SENSOR_ATTR_PWM_AUTO_POINT_TEMP_RO(ix, ap) \ |
1032 | SENSOR_ATTR_2(pwm##ix##_auto_point##ap##_temp, S_IRUGO, \ |
1033 | show_pwm_auto_point_temp, NULL, \ |
1034 | ap-1, ix-1) |
1035 | |
1036 | #define SENSOR_ATTR_PWM_AUTO_POINT_PWM(ix, ap) \ |
1037 | SENSOR_ATTR_2(pwm##ix##_auto_point##ap##_pwm, S_IRUGO | S_IWUSR, \ |
1038 | show_pwm_auto_point_pwm, set_pwm_auto_point_pwm, \ |
1039 | ap-1, ix-1) |
1040 | |
1041 | #define SENSOR_ATTR_PWM_AUTO_POINT_PWM_RO(ix, ap) \ |
1042 | SENSOR_ATTR_2(pwm##ix##_auto_point##ap##_pwm, S_IRUGO, \ |
1043 | show_pwm_auto_point_pwm, NULL, \ |
1044 | ap-1, ix-1) |
1045 | |
1046 | static struct sensor_device_attribute_2 vt1211_sysfs_fan_pwm[] = { |
1047 | SENSOR_ATTR_FAN(1), |
1048 | SENSOR_ATTR_FAN(2), |
1049 | SENSOR_ATTR_PWM(1), |
1050 | SENSOR_ATTR_PWM(2), |
1051 | SENSOR_ATTR_PWM_FREQ(1), |
1052 | SENSOR_ATTR_PWM_FREQ_RO(2), |
1053 | SENSOR_ATTR_PWM_AUTO_POINT_TEMP(1, 1), |
1054 | SENSOR_ATTR_PWM_AUTO_POINT_TEMP(1, 2), |
1055 | SENSOR_ATTR_PWM_AUTO_POINT_TEMP(1, 3), |
1056 | SENSOR_ATTR_PWM_AUTO_POINT_TEMP(1, 4), |
1057 | SENSOR_ATTR_PWM_AUTO_POINT_TEMP_RO(2, 1), |
1058 | SENSOR_ATTR_PWM_AUTO_POINT_TEMP_RO(2, 2), |
1059 | SENSOR_ATTR_PWM_AUTO_POINT_TEMP_RO(2, 3), |
1060 | SENSOR_ATTR_PWM_AUTO_POINT_TEMP_RO(2, 4), |
1061 | SENSOR_ATTR_PWM_AUTO_POINT_PWM_RO(1, 1), |
1062 | SENSOR_ATTR_PWM_AUTO_POINT_PWM(1, 2), |
1063 | SENSOR_ATTR_PWM_AUTO_POINT_PWM(1, 3), |
1064 | SENSOR_ATTR_PWM_AUTO_POINT_PWM_RO(1, 4), |
1065 | SENSOR_ATTR_PWM_AUTO_POINT_PWM_RO(2, 1), |
1066 | SENSOR_ATTR_PWM_AUTO_POINT_PWM(2, 2), |
1067 | SENSOR_ATTR_PWM_AUTO_POINT_PWM(2, 3), |
1068 | SENSOR_ATTR_PWM_AUTO_POINT_PWM_RO(2, 4), |
1069 | }; |
1070 | |
1071 | static struct device_attribute vt1211_sysfs_misc[] = { |
1072 | __ATTR(vrm, S_IRUGO | S_IWUSR, show_vrm, set_vrm), |
1073 | __ATTR(cpu0_vid, S_IRUGO, show_vid, NULL), |
1074 | __ATTR(name, S_IRUGO, show_name, NULL), |
1075 | __ATTR(alarms, S_IRUGO, show_alarms, NULL), |
1076 | }; |
1077 | |
1078 | /* --------------------------------------------------------------------- |
1079 | * Device registration and initialization |
1080 | * --------------------------------------------------------------------- */ |
1081 | |
1082 | static void vt1211_init_device(struct vt1211_data *data) |
1083 | { |
1084 | /* set VRM */ |
1085 | data->vrm = vid_which_vrm(); |
1086 | |
1087 | /* Read (and initialize) UCH config */ |
1088 | data->uch_config = vt1211_read8(data, VT1211_REG_UCH_CONFIG); |
1089 | if (uch_config > -1) { |
1090 | data->uch_config = (data->uch_config & 0x83) | |
1091 | (uch_config << 2); |
1092 | vt1211_write8(data, VT1211_REG_UCH_CONFIG, val: data->uch_config); |
1093 | } |
1094 | |
1095 | /* |
1096 | * Initialize the interrupt mode (if request at module load time). |
1097 | * The VT1211 implements 3 different modes for clearing interrupts: |
1098 | * 0: Clear INT when status register is read. Regenerate INT as long |
1099 | * as temp stays above hysteresis limit. |
1100 | * 1: Clear INT when status register is read. DON'T regenerate INT |
1101 | * until temp falls below hysteresis limit and exceeds hot limit |
1102 | * again. |
1103 | * 2: Clear INT when temp falls below max limit. |
1104 | * |
1105 | * The driver only allows to force mode 0 since that's the only one |
1106 | * that makes sense for 'sensors' |
1107 | */ |
1108 | if (int_mode == 0) { |
1109 | vt1211_write8(data, VT1211_REG_TEMP1_CONFIG, val: 0); |
1110 | vt1211_write8(data, VT1211_REG_TEMP2_CONFIG, val: 0); |
1111 | } |
1112 | |
1113 | /* Fill in some hard wired values into our data struct */ |
1114 | data->pwm_auto_pwm[0][3] = 255; |
1115 | data->pwm_auto_pwm[1][3] = 255; |
1116 | } |
1117 | |
1118 | static void vt1211_remove_sysfs(struct platform_device *pdev) |
1119 | { |
1120 | struct device *dev = &pdev->dev; |
1121 | int i; |
1122 | |
1123 | for (i = 0; i < ARRAY_SIZE(vt1211_in_attr_group); i++) |
1124 | sysfs_remove_group(kobj: &dev->kobj, grp: &vt1211_in_attr_group[i]); |
1125 | |
1126 | for (i = 0; i < ARRAY_SIZE(vt1211_temp_attr_group); i++) |
1127 | sysfs_remove_group(kobj: &dev->kobj, grp: &vt1211_temp_attr_group[i]); |
1128 | |
1129 | for (i = 0; i < ARRAY_SIZE(vt1211_sysfs_fan_pwm); i++) { |
1130 | device_remove_file(dev, |
1131 | attr: &vt1211_sysfs_fan_pwm[i].dev_attr); |
1132 | } |
1133 | for (i = 0; i < ARRAY_SIZE(vt1211_sysfs_misc); i++) |
1134 | device_remove_file(dev, attr: &vt1211_sysfs_misc[i]); |
1135 | } |
1136 | |
1137 | static int vt1211_probe(struct platform_device *pdev) |
1138 | { |
1139 | struct device *dev = &pdev->dev; |
1140 | struct vt1211_data *data; |
1141 | struct resource *res; |
1142 | int i, err; |
1143 | |
1144 | data = devm_kzalloc(dev, size: sizeof(struct vt1211_data), GFP_KERNEL); |
1145 | if (!data) |
1146 | return -ENOMEM; |
1147 | |
1148 | res = platform_get_resource(pdev, IORESOURCE_IO, 0); |
1149 | if (!devm_request_region(dev, res->start, resource_size(res), |
1150 | DRVNAME)) { |
1151 | dev_err(dev, "Failed to request region 0x%lx-0x%lx\n" , |
1152 | (unsigned long)res->start, (unsigned long)res->end); |
1153 | return -EBUSY; |
1154 | } |
1155 | data->addr = res->start; |
1156 | data->name = DRVNAME; |
1157 | mutex_init(&data->update_lock); |
1158 | |
1159 | platform_set_drvdata(pdev, data); |
1160 | |
1161 | /* Initialize the VT1211 chip */ |
1162 | vt1211_init_device(data); |
1163 | |
1164 | /* Create sysfs interface files */ |
1165 | for (i = 0; i < ARRAY_SIZE(vt1211_in_attr_group); i++) { |
1166 | if (ISVOLT(i, data->uch_config)) { |
1167 | err = sysfs_create_group(kobj: &dev->kobj, |
1168 | grp: &vt1211_in_attr_group[i]); |
1169 | if (err) |
1170 | goto EXIT_DEV_REMOVE; |
1171 | } |
1172 | } |
1173 | for (i = 0; i < ARRAY_SIZE(vt1211_temp_attr_group); i++) { |
1174 | if (ISTEMP(i, data->uch_config)) { |
1175 | err = sysfs_create_group(kobj: &dev->kobj, |
1176 | grp: &vt1211_temp_attr_group[i]); |
1177 | if (err) |
1178 | goto EXIT_DEV_REMOVE; |
1179 | } |
1180 | } |
1181 | for (i = 0; i < ARRAY_SIZE(vt1211_sysfs_fan_pwm); i++) { |
1182 | err = device_create_file(device: dev, |
1183 | entry: &vt1211_sysfs_fan_pwm[i].dev_attr); |
1184 | if (err) |
1185 | goto EXIT_DEV_REMOVE; |
1186 | } |
1187 | for (i = 0; i < ARRAY_SIZE(vt1211_sysfs_misc); i++) { |
1188 | err = device_create_file(device: dev, |
1189 | entry: &vt1211_sysfs_misc[i]); |
1190 | if (err) |
1191 | goto EXIT_DEV_REMOVE; |
1192 | } |
1193 | |
1194 | /* Register device */ |
1195 | data->hwmon_dev = hwmon_device_register(dev); |
1196 | if (IS_ERR(ptr: data->hwmon_dev)) { |
1197 | err = PTR_ERR(ptr: data->hwmon_dev); |
1198 | dev_err(dev, "Class registration failed (%d)\n" , err); |
1199 | goto EXIT_DEV_REMOVE_SILENT; |
1200 | } |
1201 | |
1202 | return 0; |
1203 | |
1204 | EXIT_DEV_REMOVE: |
1205 | dev_err(dev, "Sysfs interface creation failed (%d)\n" , err); |
1206 | EXIT_DEV_REMOVE_SILENT: |
1207 | vt1211_remove_sysfs(pdev); |
1208 | return err; |
1209 | } |
1210 | |
1211 | static void vt1211_remove(struct platform_device *pdev) |
1212 | { |
1213 | struct vt1211_data *data = platform_get_drvdata(pdev); |
1214 | |
1215 | hwmon_device_unregister(dev: data->hwmon_dev); |
1216 | vt1211_remove_sysfs(pdev); |
1217 | } |
1218 | |
1219 | static struct platform_driver vt1211_driver = { |
1220 | .driver = { |
1221 | .name = DRVNAME, |
1222 | }, |
1223 | .probe = vt1211_probe, |
1224 | .remove_new = vt1211_remove, |
1225 | }; |
1226 | |
1227 | static int __init vt1211_device_add(unsigned short address) |
1228 | { |
1229 | struct resource res = { |
1230 | .start = address, |
1231 | .end = address + 0x7f, |
1232 | .flags = IORESOURCE_IO, |
1233 | }; |
1234 | int err; |
1235 | |
1236 | pdev = platform_device_alloc(DRVNAME, id: address); |
1237 | if (!pdev) { |
1238 | err = -ENOMEM; |
1239 | pr_err("Device allocation failed (%d)\n" , err); |
1240 | goto EXIT; |
1241 | } |
1242 | |
1243 | res.name = pdev->name; |
1244 | err = acpi_check_resource_conflict(res: &res); |
1245 | if (err) |
1246 | goto EXIT_DEV_PUT; |
1247 | |
1248 | err = platform_device_add_resources(pdev, res: &res, num: 1); |
1249 | if (err) { |
1250 | pr_err("Device resource addition failed (%d)\n" , err); |
1251 | goto EXIT_DEV_PUT; |
1252 | } |
1253 | |
1254 | err = platform_device_add(pdev); |
1255 | if (err) { |
1256 | pr_err("Device addition failed (%d)\n" , err); |
1257 | goto EXIT_DEV_PUT; |
1258 | } |
1259 | |
1260 | return 0; |
1261 | |
1262 | EXIT_DEV_PUT: |
1263 | platform_device_put(pdev); |
1264 | EXIT: |
1265 | return err; |
1266 | } |
1267 | |
1268 | static int __init vt1211_find(int sio_cip, unsigned short *address) |
1269 | { |
1270 | int err; |
1271 | int devid; |
1272 | |
1273 | err = superio_enter(sio_cip); |
1274 | if (err) |
1275 | return err; |
1276 | |
1277 | err = -ENODEV; |
1278 | devid = force_id ? force_id : superio_inb(sio_cip, SIO_VT1211_DEVID); |
1279 | if (devid != SIO_VT1211_ID) |
1280 | goto EXIT; |
1281 | |
1282 | superio_select(sio_cip, SIO_VT1211_LDN_HWMON); |
1283 | |
1284 | if ((superio_inb(sio_cip, SIO_VT1211_ACTIVE) & 1) == 0) { |
1285 | pr_warn("HW monitor is disabled, skipping\n" ); |
1286 | goto EXIT; |
1287 | } |
1288 | |
1289 | *address = ((superio_inb(sio_cip, SIO_VT1211_BADDR) << 8) | |
1290 | (superio_inb(sio_cip, SIO_VT1211_BADDR + 1))) & 0xff00; |
1291 | if (*address == 0) { |
1292 | pr_warn("Base address is not set, skipping\n" ); |
1293 | goto EXIT; |
1294 | } |
1295 | |
1296 | err = 0; |
1297 | pr_info("Found VT1211 chip at 0x%04x, revision %u\n" , |
1298 | *address, superio_inb(sio_cip, SIO_VT1211_DEVREV)); |
1299 | |
1300 | EXIT: |
1301 | superio_exit(sio_cip); |
1302 | return err; |
1303 | } |
1304 | |
1305 | static int __init vt1211_init(void) |
1306 | { |
1307 | int err; |
1308 | unsigned short address = 0; |
1309 | |
1310 | err = vt1211_find(SIO_REG_CIP1, address: &address); |
1311 | if (err) { |
1312 | err = vt1211_find(SIO_REG_CIP2, address: &address); |
1313 | if (err) |
1314 | goto EXIT; |
1315 | } |
1316 | |
1317 | if ((uch_config < -1) || (uch_config > 31)) { |
1318 | err = -EINVAL; |
1319 | pr_warn("Invalid UCH configuration %d. Choose a value between 0 and 31.\n" , |
1320 | uch_config); |
1321 | goto EXIT; |
1322 | } |
1323 | |
1324 | if ((int_mode < -1) || (int_mode > 0)) { |
1325 | err = -EINVAL; |
1326 | pr_warn("Invalid interrupt mode %d. Only mode 0 is supported.\n" , |
1327 | int_mode); |
1328 | goto EXIT; |
1329 | } |
1330 | |
1331 | err = platform_driver_register(&vt1211_driver); |
1332 | if (err) |
1333 | goto EXIT; |
1334 | |
1335 | /* Sets global pdev as a side effect */ |
1336 | err = vt1211_device_add(address); |
1337 | if (err) |
1338 | goto EXIT_DRV_UNREGISTER; |
1339 | |
1340 | return 0; |
1341 | |
1342 | EXIT_DRV_UNREGISTER: |
1343 | platform_driver_unregister(&vt1211_driver); |
1344 | EXIT: |
1345 | return err; |
1346 | } |
1347 | |
1348 | static void __exit vt1211_exit(void) |
1349 | { |
1350 | platform_device_unregister(pdev); |
1351 | platform_driver_unregister(&vt1211_driver); |
1352 | } |
1353 | |
1354 | MODULE_AUTHOR("Juerg Haefliger <juergh@gmail.com>" ); |
1355 | MODULE_DESCRIPTION("VT1211 sensors" ); |
1356 | MODULE_LICENSE("GPL" ); |
1357 | |
1358 | module_init(vt1211_init); |
1359 | module_exit(vt1211_exit); |
1360 | |