Commit | Line | Data |
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2874c5fd | 1 | // SPDX-License-Identifier: GPL-2.0-or-later |
e41f6432 AJ |
2 | /* |
3 | * HWMON Driver for Dialog DA9052 | |
4 | * | |
5 | * Copyright(c) 2012 Dialog Semiconductor Ltd. | |
6 | * | |
7 | * Author: David Dajun Chen <dchen@diasemi.com> | |
e41f6432 AJ |
8 | */ |
9 | ||
e41f6432 AJ |
10 | #include <linux/err.h> |
11 | #include <linux/hwmon.h> | |
12 | #include <linux/hwmon-sysfs.h> | |
13 | #include <linux/init.h> | |
14 | #include <linux/kernel.h> | |
15 | #include <linux/module.h> | |
16 | #include <linux/slab.h> | |
17 | #include <linux/platform_device.h> | |
4f16cab1 | 18 | #include <linux/property.h> |
e41f6432 AJ |
19 | |
20 | #include <linux/mfd/da9052/da9052.h> | |
21 | #include <linux/mfd/da9052/reg.h> | |
4f16cab1 | 22 | #include <linux/regulator/consumer.h> |
e41f6432 AJ |
23 | |
24 | struct da9052_hwmon { | |
4f16cab1 SR |
25 | struct da9052 *da9052; |
26 | struct mutex hwmon_lock; | |
27 | bool tsi_as_adc; | |
28 | int tsiref_mv; | |
29 | struct regulator *tsiref; | |
30 | struct completion tsidone; | |
e41f6432 AJ |
31 | }; |
32 | ||
33 | static const char * const input_names[] = { | |
34 | [DA9052_ADC_VDDOUT] = "VDDOUT", | |
35 | [DA9052_ADC_ICH] = "CHARGING CURRENT", | |
36 | [DA9052_ADC_TBAT] = "BATTERY TEMP", | |
37 | [DA9052_ADC_VBAT] = "BATTERY VOLTAGE", | |
38 | [DA9052_ADC_IN4] = "ADC IN4", | |
39 | [DA9052_ADC_IN5] = "ADC IN5", | |
40 | [DA9052_ADC_IN6] = "ADC IN6", | |
4f16cab1 SR |
41 | [DA9052_ADC_TSI_XP] = "ADC TS X+", |
42 | [DA9052_ADC_TSI_YP] = "ADC TS Y+", | |
43 | [DA9052_ADC_TSI_XN] = "ADC TS X-", | |
44 | [DA9052_ADC_TSI_YN] = "ADC TS Y-", | |
e41f6432 AJ |
45 | [DA9052_ADC_TJUNC] = "BATTERY JUNCTION TEMP", |
46 | [DA9052_ADC_VBBAT] = "BACK-UP BATTERY VOLTAGE", | |
47 | }; | |
48 | ||
49 | /* Conversion function for VDDOUT and VBAT */ | |
088ce2ac | 50 | static inline int volt_reg_to_mv(int value) |
e41f6432 | 51 | { |
c09088d9 | 52 | return DIV_ROUND_CLOSEST(value * 2000, 1023) + 2500; |
e41f6432 AJ |
53 | } |
54 | ||
55 | /* Conversion function for ADC channels 4, 5 and 6 */ | |
088ce2ac | 56 | static inline int input_reg_to_mv(int value) |
e41f6432 AJ |
57 | { |
58 | return DIV_ROUND_CLOSEST(value * 2500, 1023); | |
59 | } | |
60 | ||
61 | /* Conversion function for VBBAT */ | |
088ce2ac | 62 | static inline int vbbat_reg_to_mv(int value) |
e41f6432 | 63 | { |
c09088d9 | 64 | return DIV_ROUND_CLOSEST(value * 5000, 1023); |
e41f6432 AJ |
65 | } |
66 | ||
4f16cab1 SR |
67 | static inline int input_tsireg_to_mv(struct da9052_hwmon *hwmon, int value) |
68 | { | |
69 | return DIV_ROUND_CLOSEST(value * hwmon->tsiref_mv, 1023); | |
70 | } | |
71 | ||
d9b24e37 | 72 | static inline int da9052_enable_vddout_channel(struct da9052 *da9052) |
e41f6432 | 73 | { |
d9b24e37 AL |
74 | return da9052_reg_update(da9052, DA9052_ADC_CONT_REG, |
75 | DA9052_ADCCONT_AUTOVDDEN, | |
76 | DA9052_ADCCONT_AUTOVDDEN); | |
e41f6432 AJ |
77 | } |
78 | ||
d9b24e37 | 79 | static inline int da9052_disable_vddout_channel(struct da9052 *da9052) |
e41f6432 | 80 | { |
d9b24e37 AL |
81 | return da9052_reg_update(da9052, DA9052_ADC_CONT_REG, |
82 | DA9052_ADCCONT_AUTOVDDEN, 0); | |
e41f6432 AJ |
83 | } |
84 | ||
6db587b7 | 85 | static ssize_t da9052_vddout_show(struct device *dev, |
e41f6432 AJ |
86 | struct device_attribute *devattr, char *buf) |
87 | { | |
88 | struct da9052_hwmon *hwmon = dev_get_drvdata(dev); | |
89 | int ret, vdd; | |
90 | ||
91 | mutex_lock(&hwmon->hwmon_lock); | |
92 | ||
93 | ret = da9052_enable_vddout_channel(hwmon->da9052); | |
94 | if (ret < 0) | |
95 | goto hwmon_err; | |
96 | ||
97 | vdd = da9052_reg_read(hwmon->da9052, DA9052_VDD_RES_REG); | |
98 | if (vdd < 0) { | |
99 | ret = vdd; | |
100 | goto hwmon_err_release; | |
101 | } | |
102 | ||
103 | ret = da9052_disable_vddout_channel(hwmon->da9052); | |
104 | if (ret < 0) | |
105 | goto hwmon_err; | |
106 | ||
107 | mutex_unlock(&hwmon->hwmon_lock); | |
088ce2ac | 108 | return sprintf(buf, "%d\n", volt_reg_to_mv(vdd)); |
e41f6432 AJ |
109 | |
110 | hwmon_err_release: | |
111 | da9052_disable_vddout_channel(hwmon->da9052); | |
112 | hwmon_err: | |
113 | mutex_unlock(&hwmon->hwmon_lock); | |
114 | return ret; | |
115 | } | |
116 | ||
6db587b7 | 117 | static ssize_t da9052_ich_show(struct device *dev, |
e41f6432 AJ |
118 | struct device_attribute *devattr, char *buf) |
119 | { | |
120 | struct da9052_hwmon *hwmon = dev_get_drvdata(dev); | |
121 | int ret; | |
122 | ||
123 | ret = da9052_reg_read(hwmon->da9052, DA9052_ICHG_AV_REG); | |
124 | if (ret < 0) | |
125 | return ret; | |
126 | ||
127 | /* Equivalent to 3.9mA/bit in register ICHG_AV */ | |
128 | return sprintf(buf, "%d\n", DIV_ROUND_CLOSEST(ret * 39, 10)); | |
129 | } | |
130 | ||
6db587b7 | 131 | static ssize_t da9052_tbat_show(struct device *dev, |
e41f6432 AJ |
132 | struct device_attribute *devattr, char *buf) |
133 | { | |
134 | struct da9052_hwmon *hwmon = dev_get_drvdata(dev); | |
135 | ||
136 | return sprintf(buf, "%d\n", da9052_adc_read_temp(hwmon->da9052)); | |
137 | } | |
138 | ||
6db587b7 | 139 | static ssize_t da9052_vbat_show(struct device *dev, |
e41f6432 AJ |
140 | struct device_attribute *devattr, char *buf) |
141 | { | |
142 | struct da9052_hwmon *hwmon = dev_get_drvdata(dev); | |
143 | int ret; | |
144 | ||
145 | ret = da9052_adc_manual_read(hwmon->da9052, DA9052_ADC_VBAT); | |
146 | if (ret < 0) | |
147 | return ret; | |
148 | ||
088ce2ac | 149 | return sprintf(buf, "%d\n", volt_reg_to_mv(ret)); |
e41f6432 AJ |
150 | } |
151 | ||
6db587b7 | 152 | static ssize_t da9052_misc_channel_show(struct device *dev, |
e41f6432 AJ |
153 | struct device_attribute *devattr, |
154 | char *buf) | |
155 | { | |
156 | struct da9052_hwmon *hwmon = dev_get_drvdata(dev); | |
157 | int channel = to_sensor_dev_attr(devattr)->index; | |
158 | int ret; | |
159 | ||
160 | ret = da9052_adc_manual_read(hwmon->da9052, channel); | |
161 | if (ret < 0) | |
162 | return ret; | |
163 | ||
088ce2ac | 164 | return sprintf(buf, "%d\n", input_reg_to_mv(ret)); |
e41f6432 AJ |
165 | } |
166 | ||
4f16cab1 SR |
167 | static int da9052_request_tsi_read(struct da9052_hwmon *hwmon, int channel) |
168 | { | |
169 | u8 val = DA9052_TSICONTB_TSIMAN; | |
170 | ||
171 | switch (channel) { | |
172 | case DA9052_ADC_TSI_XP: | |
173 | val |= DA9052_TSICONTB_TSIMUX_XP; | |
174 | break; | |
175 | case DA9052_ADC_TSI_YP: | |
176 | val |= DA9052_TSICONTB_TSIMUX_YP; | |
177 | break; | |
178 | case DA9052_ADC_TSI_XN: | |
179 | val |= DA9052_TSICONTB_TSIMUX_XN; | |
180 | break; | |
181 | case DA9052_ADC_TSI_YN: | |
182 | val |= DA9052_TSICONTB_TSIMUX_YN; | |
183 | break; | |
184 | } | |
185 | ||
186 | return da9052_reg_write(hwmon->da9052, DA9052_TSI_CONT_B_REG, val); | |
187 | } | |
188 | ||
189 | static int da9052_get_tsi_result(struct da9052_hwmon *hwmon, int channel) | |
190 | { | |
191 | u8 regs[3]; | |
192 | int msb, lsb, err; | |
193 | ||
194 | /* block read to avoid separation of MSB and LSB */ | |
195 | err = da9052_group_read(hwmon->da9052, DA9052_TSI_X_MSB_REG, | |
196 | ARRAY_SIZE(regs), regs); | |
197 | if (err) | |
198 | return err; | |
199 | ||
200 | switch (channel) { | |
201 | case DA9052_ADC_TSI_XP: | |
202 | case DA9052_ADC_TSI_XN: | |
203 | msb = regs[0] << DA9052_TSILSB_TSIXL_BITS; | |
204 | lsb = regs[2] & DA9052_TSILSB_TSIXL; | |
205 | lsb >>= DA9052_TSILSB_TSIXL_SHIFT; | |
206 | break; | |
207 | case DA9052_ADC_TSI_YP: | |
208 | case DA9052_ADC_TSI_YN: | |
209 | msb = regs[1] << DA9052_TSILSB_TSIYL_BITS; | |
210 | lsb = regs[2] & DA9052_TSILSB_TSIYL; | |
211 | lsb >>= DA9052_TSILSB_TSIYL_SHIFT; | |
212 | break; | |
213 | default: | |
214 | return -EINVAL; | |
215 | } | |
216 | ||
217 | return msb | lsb; | |
218 | } | |
219 | ||
220 | ||
221 | static ssize_t __da9052_read_tsi(struct device *dev, int channel) | |
222 | { | |
223 | struct da9052_hwmon *hwmon = dev_get_drvdata(dev); | |
224 | int ret; | |
225 | ||
226 | reinit_completion(&hwmon->tsidone); | |
227 | ||
228 | ret = da9052_request_tsi_read(hwmon, channel); | |
229 | if (ret < 0) | |
230 | return ret; | |
231 | ||
232 | /* Wait for an conversion done interrupt */ | |
233 | if (!wait_for_completion_timeout(&hwmon->tsidone, | |
234 | msecs_to_jiffies(500))) | |
235 | return -ETIMEDOUT; | |
236 | ||
237 | return da9052_get_tsi_result(hwmon, channel); | |
238 | } | |
239 | ||
6db587b7 GR |
240 | static ssize_t da9052_tsi_show(struct device *dev, |
241 | struct device_attribute *devattr, char *buf) | |
4f16cab1 SR |
242 | { |
243 | struct da9052_hwmon *hwmon = dev_get_drvdata(dev); | |
244 | int channel = to_sensor_dev_attr(devattr)->index; | |
245 | int ret; | |
246 | ||
247 | mutex_lock(&hwmon->hwmon_lock); | |
248 | ret = __da9052_read_tsi(dev, channel); | |
249 | mutex_unlock(&hwmon->hwmon_lock); | |
250 | ||
251 | if (ret < 0) | |
252 | return ret; | |
253 | else | |
254 | return sprintf(buf, "%d\n", input_tsireg_to_mv(hwmon, ret)); | |
255 | } | |
256 | ||
6db587b7 | 257 | static ssize_t da9052_tjunc_show(struct device *dev, |
e41f6432 AJ |
258 | struct device_attribute *devattr, char *buf) |
259 | { | |
260 | struct da9052_hwmon *hwmon = dev_get_drvdata(dev); | |
261 | int tjunc; | |
262 | int toffset; | |
263 | ||
264 | tjunc = da9052_reg_read(hwmon->da9052, DA9052_TJUNC_RES_REG); | |
265 | if (tjunc < 0) | |
266 | return tjunc; | |
267 | ||
268 | toffset = da9052_reg_read(hwmon->da9052, DA9052_T_OFFSET_REG); | |
269 | if (toffset < 0) | |
270 | return toffset; | |
271 | ||
272 | /* | |
273 | * Degrees celsius = 1.708 * (TJUNC_RES - T_OFFSET) - 108.8 | |
274 | * T_OFFSET is a trim value used to improve accuracy of the result | |
275 | */ | |
276 | return sprintf(buf, "%d\n", 1708 * (tjunc - toffset) - 108800); | |
277 | } | |
278 | ||
6db587b7 | 279 | static ssize_t da9052_vbbat_show(struct device *dev, |
e41f6432 AJ |
280 | struct device_attribute *devattr, char *buf) |
281 | { | |
282 | struct da9052_hwmon *hwmon = dev_get_drvdata(dev); | |
283 | int ret; | |
284 | ||
285 | ret = da9052_adc_manual_read(hwmon->da9052, DA9052_ADC_VBBAT); | |
286 | if (ret < 0) | |
287 | return ret; | |
288 | ||
088ce2ac | 289 | return sprintf(buf, "%d\n", vbbat_reg_to_mv(ret)); |
e41f6432 AJ |
290 | } |
291 | ||
6db587b7 | 292 | static ssize_t label_show(struct device *dev, |
e41f6432 AJ |
293 | struct device_attribute *devattr, char *buf) |
294 | { | |
295 | return sprintf(buf, "%s\n", | |
296 | input_names[to_sensor_dev_attr(devattr)->index]); | |
297 | } | |
298 | ||
4f16cab1 SR |
299 | static umode_t da9052_channel_is_visible(struct kobject *kobj, |
300 | struct attribute *attr, int index) | |
301 | { | |
302 | struct device *dev = container_of(kobj, struct device, kobj); | |
303 | struct da9052_hwmon *hwmon = dev_get_drvdata(dev); | |
304 | struct device_attribute *dattr = container_of(attr, | |
305 | struct device_attribute, attr); | |
306 | struct sensor_device_attribute *sattr = to_sensor_dev_attr(dattr); | |
307 | ||
308 | if (!hwmon->tsi_as_adc) { | |
309 | switch (sattr->index) { | |
310 | case DA9052_ADC_TSI_XP: | |
311 | case DA9052_ADC_TSI_YP: | |
312 | case DA9052_ADC_TSI_XN: | |
313 | case DA9052_ADC_TSI_YN: | |
314 | return 0; | |
315 | } | |
316 | } | |
317 | ||
318 | return attr->mode; | |
319 | } | |
320 | ||
6db587b7 GR |
321 | static SENSOR_DEVICE_ATTR_RO(in0_input, da9052_vddout, DA9052_ADC_VDDOUT); |
322 | static SENSOR_DEVICE_ATTR_RO(in0_label, label, DA9052_ADC_VDDOUT); | |
323 | static SENSOR_DEVICE_ATTR_RO(in3_input, da9052_vbat, DA9052_ADC_VBAT); | |
324 | static SENSOR_DEVICE_ATTR_RO(in3_label, label, DA9052_ADC_VBAT); | |
325 | static SENSOR_DEVICE_ATTR_RO(in4_input, da9052_misc_channel, DA9052_ADC_IN4); | |
326 | static SENSOR_DEVICE_ATTR_RO(in4_label, label, DA9052_ADC_IN4); | |
327 | static SENSOR_DEVICE_ATTR_RO(in5_input, da9052_misc_channel, DA9052_ADC_IN5); | |
328 | static SENSOR_DEVICE_ATTR_RO(in5_label, label, DA9052_ADC_IN5); | |
329 | static SENSOR_DEVICE_ATTR_RO(in6_input, da9052_misc_channel, DA9052_ADC_IN6); | |
330 | static SENSOR_DEVICE_ATTR_RO(in6_label, label, DA9052_ADC_IN6); | |
331 | static SENSOR_DEVICE_ATTR_RO(in9_input, da9052_vbbat, DA9052_ADC_VBBAT); | |
332 | static SENSOR_DEVICE_ATTR_RO(in9_label, label, DA9052_ADC_VBBAT); | |
333 | ||
334 | static SENSOR_DEVICE_ATTR_RO(in70_input, da9052_tsi, DA9052_ADC_TSI_XP); | |
335 | static SENSOR_DEVICE_ATTR_RO(in70_label, label, DA9052_ADC_TSI_XP); | |
336 | static SENSOR_DEVICE_ATTR_RO(in71_input, da9052_tsi, DA9052_ADC_TSI_XN); | |
337 | static SENSOR_DEVICE_ATTR_RO(in71_label, label, DA9052_ADC_TSI_XN); | |
338 | static SENSOR_DEVICE_ATTR_RO(in72_input, da9052_tsi, DA9052_ADC_TSI_YP); | |
339 | static SENSOR_DEVICE_ATTR_RO(in72_label, label, DA9052_ADC_TSI_YP); | |
340 | static SENSOR_DEVICE_ATTR_RO(in73_input, da9052_tsi, DA9052_ADC_TSI_YN); | |
341 | static SENSOR_DEVICE_ATTR_RO(in73_label, label, DA9052_ADC_TSI_YN); | |
342 | ||
343 | static SENSOR_DEVICE_ATTR_RO(curr1_input, da9052_ich, DA9052_ADC_ICH); | |
344 | static SENSOR_DEVICE_ATTR_RO(curr1_label, label, DA9052_ADC_ICH); | |
345 | ||
346 | static SENSOR_DEVICE_ATTR_RO(temp2_input, da9052_tbat, DA9052_ADC_TBAT); | |
347 | static SENSOR_DEVICE_ATTR_RO(temp2_label, label, DA9052_ADC_TBAT); | |
348 | static SENSOR_DEVICE_ATTR_RO(temp8_input, da9052_tjunc, DA9052_ADC_TJUNC); | |
349 | static SENSOR_DEVICE_ATTR_RO(temp8_label, label, DA9052_ADC_TJUNC); | |
e41f6432 | 350 | |
4222eb5f | 351 | static struct attribute *da9052_attrs[] = { |
e41f6432 AJ |
352 | &sensor_dev_attr_in0_input.dev_attr.attr, |
353 | &sensor_dev_attr_in0_label.dev_attr.attr, | |
354 | &sensor_dev_attr_in3_input.dev_attr.attr, | |
355 | &sensor_dev_attr_in3_label.dev_attr.attr, | |
356 | &sensor_dev_attr_in4_input.dev_attr.attr, | |
357 | &sensor_dev_attr_in4_label.dev_attr.attr, | |
358 | &sensor_dev_attr_in5_input.dev_attr.attr, | |
359 | &sensor_dev_attr_in5_label.dev_attr.attr, | |
360 | &sensor_dev_attr_in6_input.dev_attr.attr, | |
361 | &sensor_dev_attr_in6_label.dev_attr.attr, | |
4f16cab1 SR |
362 | &sensor_dev_attr_in70_input.dev_attr.attr, |
363 | &sensor_dev_attr_in70_label.dev_attr.attr, | |
364 | &sensor_dev_attr_in71_input.dev_attr.attr, | |
365 | &sensor_dev_attr_in71_label.dev_attr.attr, | |
366 | &sensor_dev_attr_in72_input.dev_attr.attr, | |
367 | &sensor_dev_attr_in72_label.dev_attr.attr, | |
368 | &sensor_dev_attr_in73_input.dev_attr.attr, | |
369 | &sensor_dev_attr_in73_label.dev_attr.attr, | |
e41f6432 AJ |
370 | &sensor_dev_attr_in9_input.dev_attr.attr, |
371 | &sensor_dev_attr_in9_label.dev_attr.attr, | |
372 | &sensor_dev_attr_curr1_input.dev_attr.attr, | |
373 | &sensor_dev_attr_curr1_label.dev_attr.attr, | |
374 | &sensor_dev_attr_temp2_input.dev_attr.attr, | |
375 | &sensor_dev_attr_temp2_label.dev_attr.attr, | |
376 | &sensor_dev_attr_temp8_input.dev_attr.attr, | |
377 | &sensor_dev_attr_temp8_label.dev_attr.attr, | |
378 | NULL | |
379 | }; | |
380 | ||
4f16cab1 SR |
381 | static const struct attribute_group da9052_group = { |
382 | .attrs = da9052_attrs, | |
383 | .is_visible = da9052_channel_is_visible, | |
384 | }; | |
385 | __ATTRIBUTE_GROUPS(da9052); | |
386 | ||
387 | static irqreturn_t da9052_tsi_datardy_irq(int irq, void *data) | |
388 | { | |
389 | struct da9052_hwmon *hwmon = data; | |
390 | ||
391 | complete(&hwmon->tsidone); | |
392 | return IRQ_HANDLED; | |
393 | } | |
e41f6432 | 394 | |
6c931ae1 | 395 | static int da9052_hwmon_probe(struct platform_device *pdev) |
e41f6432 | 396 | { |
4222eb5f | 397 | struct device *dev = &pdev->dev; |
e41f6432 | 398 | struct da9052_hwmon *hwmon; |
4222eb5f | 399 | struct device *hwmon_dev; |
4f16cab1 | 400 | int err; |
e41f6432 | 401 | |
4222eb5f | 402 | hwmon = devm_kzalloc(dev, sizeof(struct da9052_hwmon), GFP_KERNEL); |
e41f6432 AJ |
403 | if (!hwmon) |
404 | return -ENOMEM; | |
405 | ||
4f16cab1 SR |
406 | platform_set_drvdata(pdev, hwmon); |
407 | ||
e41f6432 AJ |
408 | mutex_init(&hwmon->hwmon_lock); |
409 | hwmon->da9052 = dev_get_drvdata(pdev->dev.parent); | |
410 | ||
4f16cab1 SR |
411 | init_completion(&hwmon->tsidone); |
412 | ||
413 | hwmon->tsi_as_adc = | |
414 | device_property_read_bool(pdev->dev.parent, "dlg,tsi-as-adc"); | |
415 | ||
416 | if (hwmon->tsi_as_adc) { | |
417 | hwmon->tsiref = devm_regulator_get(pdev->dev.parent, "tsiref"); | |
418 | if (IS_ERR(hwmon->tsiref)) { | |
419 | err = PTR_ERR(hwmon->tsiref); | |
420 | dev_err(&pdev->dev, "failed to get tsiref: %d", err); | |
421 | return err; | |
422 | } | |
423 | ||
424 | err = regulator_enable(hwmon->tsiref); | |
425 | if (err) | |
426 | return err; | |
427 | ||
428 | hwmon->tsiref_mv = regulator_get_voltage(hwmon->tsiref); | |
429 | if (hwmon->tsiref_mv < 0) { | |
430 | err = hwmon->tsiref_mv; | |
431 | goto exit_regulator; | |
432 | } | |
433 | ||
434 | /* convert from microvolt (DT) to millivolt (hwmon) */ | |
435 | hwmon->tsiref_mv /= 1000; | |
436 | ||
437 | /* TSIREF limits from datasheet */ | |
438 | if (hwmon->tsiref_mv < 1800 || hwmon->tsiref_mv > 2600) { | |
439 | dev_err(hwmon->da9052->dev, "invalid TSIREF voltage: %d", | |
440 | hwmon->tsiref_mv); | |
441 | err = -ENXIO; | |
442 | goto exit_regulator; | |
443 | } | |
444 | ||
445 | /* disable touchscreen features */ | |
446 | da9052_reg_write(hwmon->da9052, DA9052_TSI_CONT_A_REG, 0x00); | |
447 | ||
b16918a5 MW |
448 | /* Sample every 1ms */ |
449 | da9052_reg_update(hwmon->da9052, DA9052_ADC_CONT_REG, | |
450 | DA9052_ADCCONT_ADCMODE, | |
451 | DA9052_ADCCONT_ADCMODE); | |
452 | ||
4f16cab1 SR |
453 | err = da9052_request_irq(hwmon->da9052, DA9052_IRQ_TSIREADY, |
454 | "tsiready-irq", da9052_tsi_datardy_irq, | |
455 | hwmon); | |
456 | if (err) { | |
457 | dev_err(&pdev->dev, "Failed to register TSIRDY IRQ: %d", | |
458 | err); | |
459 | goto exit_regulator; | |
460 | } | |
461 | } | |
462 | ||
4222eb5f AL |
463 | hwmon_dev = devm_hwmon_device_register_with_groups(dev, "da9052", |
464 | hwmon, | |
465 | da9052_groups); | |
4f16cab1 SR |
466 | err = PTR_ERR_OR_ZERO(hwmon_dev); |
467 | if (err) | |
468 | goto exit_irq; | |
469 | ||
470 | return 0; | |
471 | ||
472 | exit_irq: | |
473 | if (hwmon->tsi_as_adc) | |
474 | da9052_free_irq(hwmon->da9052, DA9052_IRQ_TSIREADY, hwmon); | |
475 | exit_regulator: | |
476 | if (hwmon->tsiref) | |
477 | regulator_disable(hwmon->tsiref); | |
478 | ||
479 | return err; | |
480 | } | |
481 | ||
482 | static int da9052_hwmon_remove(struct platform_device *pdev) | |
483 | { | |
484 | struct da9052_hwmon *hwmon = platform_get_drvdata(pdev); | |
485 | ||
486 | if (hwmon->tsi_as_adc) { | |
487 | da9052_free_irq(hwmon->da9052, DA9052_IRQ_TSIREADY, hwmon); | |
488 | regulator_disable(hwmon->tsiref); | |
489 | } | |
490 | ||
491 | return 0; | |
e41f6432 AJ |
492 | } |
493 | ||
494 | static struct platform_driver da9052_hwmon_driver = { | |
495 | .probe = da9052_hwmon_probe, | |
4f16cab1 | 496 | .remove = da9052_hwmon_remove, |
e41f6432 AJ |
497 | .driver = { |
498 | .name = "da9052-hwmon", | |
e41f6432 AJ |
499 | }, |
500 | }; | |
501 | ||
502 | module_platform_driver(da9052_hwmon_driver); | |
503 | ||
504 | MODULE_AUTHOR("David Dajun Chen <dchen@diasemi.com>"); | |
505 | MODULE_DESCRIPTION("DA9052 HWMON driver"); | |
506 | MODULE_LICENSE("GPL"); | |
507 | MODULE_ALIAS("platform:da9052-hwmon"); |