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b2745697 AL |
1 | // SPDX-License-Identifier: GPL-2.0 |
2 | // | |
3 | // Linear Technology LTC3589,LTC3589-1 regulator support | |
4 | // | |
5 | // Copyright (c) 2014 Philipp Zabel <p.zabel@pengutronix.de>, Pengutronix | |
6 | ||
3eb2c7ec PZ |
7 | #include <linux/i2c.h> |
8 | #include <linux/init.h> | |
9 | #include <linux/interrupt.h> | |
10 | #include <linux/module.h> | |
11 | #include <linux/kernel.h> | |
12 | #include <linux/of.h> | |
45a86172 | 13 | #include <linux/of_device.h> |
3eb2c7ec PZ |
14 | #include <linux/regmap.h> |
15 | #include <linux/regulator/driver.h> | |
16 | #include <linux/regulator/of_regulator.h> | |
17 | ||
18 | #define DRIVER_NAME "ltc3589" | |
19 | ||
20 | #define LTC3589_IRQSTAT 0x02 | |
21 | #define LTC3589_SCR1 0x07 | |
22 | #define LTC3589_OVEN 0x10 | |
23 | #define LTC3589_SCR2 0x12 | |
24 | #define LTC3589_PGSTAT 0x13 | |
25 | #define LTC3589_VCCR 0x20 | |
26 | #define LTC3589_CLIRQ 0x21 | |
27 | #define LTC3589_B1DTV1 0x23 | |
28 | #define LTC3589_B1DTV2 0x24 | |
29 | #define LTC3589_VRRCR 0x25 | |
30 | #define LTC3589_B2DTV1 0x26 | |
31 | #define LTC3589_B2DTV2 0x27 | |
32 | #define LTC3589_B3DTV1 0x29 | |
33 | #define LTC3589_B3DTV2 0x2a | |
34 | #define LTC3589_L2DTV1 0x32 | |
35 | #define LTC3589_L2DTV2 0x33 | |
36 | ||
37 | #define LTC3589_IRQSTAT_PGOOD_TIMEOUT BIT(3) | |
38 | #define LTC3589_IRQSTAT_UNDERVOLT_WARN BIT(4) | |
39 | #define LTC3589_IRQSTAT_UNDERVOLT_FAULT BIT(5) | |
40 | #define LTC3589_IRQSTAT_THERMAL_WARN BIT(6) | |
41 | #define LTC3589_IRQSTAT_THERMAL_FAULT BIT(7) | |
42 | ||
43 | #define LTC3589_OVEN_SW1 BIT(0) | |
44 | #define LTC3589_OVEN_SW2 BIT(1) | |
45 | #define LTC3589_OVEN_SW3 BIT(2) | |
46 | #define LTC3589_OVEN_BB_OUT BIT(3) | |
47 | #define LTC3589_OVEN_LDO2 BIT(4) | |
48 | #define LTC3589_OVEN_LDO3 BIT(5) | |
49 | #define LTC3589_OVEN_LDO4 BIT(6) | |
50 | #define LTC3589_OVEN_SW_CTRL BIT(7) | |
51 | ||
52 | #define LTC3589_VCCR_SW1_GO BIT(0) | |
53 | #define LTC3589_VCCR_SW2_GO BIT(2) | |
54 | #define LTC3589_VCCR_SW3_GO BIT(4) | |
55 | #define LTC3589_VCCR_LDO2_GO BIT(6) | |
56 | ||
ba6622c4 AL |
57 | #define LTC3589_VRRCR_SW1_RAMP_MASK GENMASK(1, 0) |
58 | #define LTC3589_VRRCR_SW2_RAMP_MASK GENMASK(3, 2) | |
59 | #define LTC3589_VRRCR_SW3_RAMP_MASK GENMASK(5, 4) | |
60 | #define LTC3589_VRRCR_LDO2_RAMP_MASK GENMASK(7, 6) | |
61 | ||
3eb2c7ec PZ |
62 | enum ltc3589_variant { |
63 | LTC3589, | |
64 | LTC3589_1, | |
65 | LTC3589_2, | |
66 | }; | |
67 | ||
68 | enum ltc3589_reg { | |
69 | LTC3589_SW1, | |
70 | LTC3589_SW2, | |
71 | LTC3589_SW3, | |
72 | LTC3589_BB_OUT, | |
73 | LTC3589_LDO1, | |
74 | LTC3589_LDO2, | |
75 | LTC3589_LDO3, | |
76 | LTC3589_LDO4, | |
77 | LTC3589_NUM_REGULATORS, | |
78 | }; | |
79 | ||
3eb2c7ec PZ |
80 | struct ltc3589 { |
81 | struct regmap *regmap; | |
82 | struct device *dev; | |
83 | enum ltc3589_variant variant; | |
63c7c296 | 84 | struct regulator_desc regulator_descs[LTC3589_NUM_REGULATORS]; |
3eb2c7ec PZ |
85 | struct regulator_dev *regulators[LTC3589_NUM_REGULATORS]; |
86 | }; | |
87 | ||
88 | static const int ltc3589_ldo4[] = { | |
89 | 2800000, 2500000, 1800000, 3300000, | |
90 | }; | |
91 | ||
92 | static const int ltc3589_12_ldo4[] = { | |
93 | 1200000, 1800000, 2500000, 3200000, | |
94 | }; | |
95 | ||
ba6622c4 AL |
96 | static const unsigned int ltc3589_ramp_table[] = { |
97 | 880, 1750, 3500, 7000 | |
98 | }; | |
3eb2c7ec PZ |
99 | |
100 | static int ltc3589_set_suspend_voltage(struct regulator_dev *rdev, int uV) | |
101 | { | |
102 | struct ltc3589 *ltc3589 = rdev_get_drvdata(rdev); | |
103 | int sel; | |
104 | ||
105 | sel = regulator_map_voltage_linear(rdev, uV, uV); | |
106 | if (sel < 0) | |
107 | return sel; | |
108 | ||
109 | /* DTV2 register follows right after the corresponding DTV1 register */ | |
110 | return regmap_update_bits(ltc3589->regmap, rdev->desc->vsel_reg + 1, | |
111 | rdev->desc->vsel_mask, sel); | |
112 | } | |
113 | ||
114 | static int ltc3589_set_suspend_mode(struct regulator_dev *rdev, | |
115 | unsigned int mode) | |
116 | { | |
117 | struct ltc3589 *ltc3589 = rdev_get_drvdata(rdev); | |
118 | int mask, bit = 0; | |
119 | ||
120 | /* VCCR reference selects are right next to the VCCR go bits */ | |
121 | mask = rdev->desc->apply_bit << 1; | |
122 | ||
123 | if (mode == REGULATOR_MODE_STANDBY) | |
124 | bit = mask; /* Select DTV2 */ | |
125 | ||
126 | mask |= rdev->desc->apply_bit; | |
127 | bit |= rdev->desc->apply_bit; | |
128 | return regmap_update_bits(ltc3589->regmap, LTC3589_VCCR, mask, bit); | |
129 | } | |
130 | ||
3eb2c7ec | 131 | /* SW1, SW2, SW3, LDO2 */ |
c093c3a3 | 132 | static const struct regulator_ops ltc3589_linear_regulator_ops = { |
3eb2c7ec PZ |
133 | .enable = regulator_enable_regmap, |
134 | .disable = regulator_disable_regmap, | |
135 | .is_enabled = regulator_is_enabled_regmap, | |
136 | .list_voltage = regulator_list_voltage_linear, | |
137 | .set_voltage_sel = regulator_set_voltage_sel_regmap, | |
138 | .get_voltage_sel = regulator_get_voltage_sel_regmap, | |
ba6622c4 | 139 | .set_ramp_delay = regulator_set_ramp_delay_regmap, |
3eb2c7ec PZ |
140 | .set_voltage_time_sel = regulator_set_voltage_time_sel, |
141 | .set_suspend_voltage = ltc3589_set_suspend_voltage, | |
142 | .set_suspend_mode = ltc3589_set_suspend_mode, | |
143 | }; | |
144 | ||
145 | /* BB_OUT, LDO3 */ | |
c093c3a3 | 146 | static const struct regulator_ops ltc3589_fixed_regulator_ops = { |
3eb2c7ec PZ |
147 | .enable = regulator_enable_regmap, |
148 | .disable = regulator_disable_regmap, | |
149 | .is_enabled = regulator_is_enabled_regmap, | |
3eb2c7ec PZ |
150 | }; |
151 | ||
152 | /* LDO1 */ | |
c093c3a3 | 153 | static const struct regulator_ops ltc3589_fixed_standby_regulator_ops = { |
3eb2c7ec PZ |
154 | }; |
155 | ||
156 | /* LDO4 */ | |
c093c3a3 | 157 | static const struct regulator_ops ltc3589_table_regulator_ops = { |
3eb2c7ec PZ |
158 | .enable = regulator_enable_regmap, |
159 | .disable = regulator_disable_regmap, | |
160 | .is_enabled = regulator_is_enabled_regmap, | |
161 | .list_voltage = regulator_list_voltage_table, | |
162 | .set_voltage_sel = regulator_set_voltage_sel_regmap, | |
163 | .get_voltage_sel = regulator_get_voltage_sel_regmap, | |
164 | }; | |
165 | ||
ce62ba3a AL |
166 | static inline unsigned int ltc3589_scale(unsigned int uV, u32 r1, u32 r2) |
167 | { | |
168 | uint64_t tmp; | |
169 | ||
170 | if (uV == 0) | |
171 | return 0; | |
172 | ||
173 | tmp = (uint64_t)uV * r1; | |
174 | do_div(tmp, r2); | |
175 | return uV + (unsigned int)tmp; | |
176 | } | |
177 | ||
178 | static int ltc3589_of_parse_cb(struct device_node *np, | |
179 | const struct regulator_desc *desc, | |
180 | struct regulator_config *config) | |
181 | { | |
182 | struct ltc3589 *ltc3589 = config->driver_data; | |
63c7c296 | 183 | struct regulator_desc *rdesc = <c3589->regulator_descs[desc->id]; |
ce62ba3a AL |
184 | u32 r[2]; |
185 | int ret; | |
186 | ||
187 | /* Parse feedback voltage dividers. LDO3 and LDO4 don't have them */ | |
188 | if (desc->id >= LTC3589_LDO3) | |
189 | return 0; | |
3eb2c7ec | 190 | |
ce62ba3a AL |
191 | ret = of_property_read_u32_array(np, "lltc,fb-voltage-divider", r, 2); |
192 | if (ret) { | |
193 | dev_err(ltc3589->dev, "Failed to parse voltage divider: %d\n", | |
194 | ret); | |
195 | return ret; | |
196 | } | |
197 | ||
198 | if (!r[0] || !r[1]) | |
199 | return 0; | |
200 | ||
63c7c296 AL |
201 | rdesc->min_uV = ltc3589_scale(desc->min_uV, r[0], r[1]); |
202 | rdesc->uV_step = ltc3589_scale(desc->uV_step, r[0], r[1]); | |
203 | rdesc->fixed_uV = ltc3589_scale(desc->fixed_uV, r[0], r[1]); | |
ce62ba3a AL |
204 | |
205 | return 0; | |
206 | } | |
207 | ||
ba6622c4 | 208 | #define LTC3589_REG(_name, _of_name, _ops, en_bit, dtv1_reg, dtv_mask) \ |
3eb2c7ec | 209 | [LTC3589_ ## _name] = { \ |
63c7c296 AL |
210 | .name = #_name, \ |
211 | .of_match = of_match_ptr(#_of_name), \ | |
212 | .regulators_node = of_match_ptr("regulators"), \ | |
213 | .of_parse_cb = ltc3589_of_parse_cb, \ | |
214 | .n_voltages = (dtv_mask) + 1, \ | |
63c7c296 AL |
215 | .fixed_uV = (dtv_mask) ? 0 : 800000, \ |
216 | .ops = <c3589_ ## _ops ## _regulator_ops, \ | |
217 | .type = REGULATOR_VOLTAGE, \ | |
218 | .id = LTC3589_ ## _name, \ | |
219 | .owner = THIS_MODULE, \ | |
220 | .vsel_reg = (dtv1_reg), \ | |
221 | .vsel_mask = (dtv_mask), \ | |
63c7c296 AL |
222 | .enable_reg = (en_bit) ? LTC3589_OVEN : 0, \ |
223 | .enable_mask = (en_bit), \ | |
3eb2c7ec PZ |
224 | } |
225 | ||
ce62ba3a | 226 | #define LTC3589_LINEAR_REG(_name, _of_name, _dtv1) \ |
ba6622c4 AL |
227 | [LTC3589_ ## _name] = { \ |
228 | .name = #_name, \ | |
229 | .of_match = of_match_ptr(#_of_name), \ | |
230 | .regulators_node = of_match_ptr("regulators"), \ | |
231 | .of_parse_cb = ltc3589_of_parse_cb, \ | |
232 | .n_voltages = 32, \ | |
233 | .min_uV = 362500, \ | |
234 | .uV_step = 12500, \ | |
235 | .ramp_delay = 1750, \ | |
236 | .ops = <c3589_linear_regulator_ops, \ | |
237 | .type = REGULATOR_VOLTAGE, \ | |
238 | .id = LTC3589_ ## _name, \ | |
239 | .owner = THIS_MODULE, \ | |
240 | .vsel_reg = LTC3589_ ## _dtv1, \ | |
241 | .vsel_mask = 0x1f, \ | |
242 | .apply_reg = LTC3589_VCCR, \ | |
243 | .apply_bit = LTC3589_VCCR_ ## _name ## _GO, \ | |
244 | .enable_reg = LTC3589_OVEN, \ | |
245 | .enable_mask = (LTC3589_OVEN_ ## _name), \ | |
246 | .ramp_reg = LTC3589_VRRCR, \ | |
247 | .ramp_mask = LTC3589_VRRCR_ ## _name ## _RAMP_MASK, \ | |
248 | .ramp_delay_table = ltc3589_ramp_table, \ | |
249 | .n_ramp_values = ARRAY_SIZE(ltc3589_ramp_table), \ | |
250 | } | |
251 | ||
3eb2c7ec | 252 | |
ce62ba3a | 253 | #define LTC3589_FIXED_REG(_name, _of_name) \ |
ba6622c4 | 254 | LTC3589_REG(_name, _of_name, fixed, LTC3589_OVEN_ ## _name, 0, 0) |
3eb2c7ec | 255 | |
63c7c296 | 256 | static const struct regulator_desc ltc3589_regulators[] = { |
ce62ba3a AL |
257 | LTC3589_LINEAR_REG(SW1, sw1, B1DTV1), |
258 | LTC3589_LINEAR_REG(SW2, sw2, B2DTV1), | |
259 | LTC3589_LINEAR_REG(SW3, sw3, B3DTV1), | |
260 | LTC3589_FIXED_REG(BB_OUT, bb-out), | |
ba6622c4 | 261 | LTC3589_REG(LDO1, ldo1, fixed_standby, 0, 0, 0), |
ce62ba3a AL |
262 | LTC3589_LINEAR_REG(LDO2, ldo2, L2DTV1), |
263 | LTC3589_FIXED_REG(LDO3, ldo3), | |
ba6622c4 | 264 | LTC3589_REG(LDO4, ldo4, table, LTC3589_OVEN_LDO4, LTC3589_L2DTV2, 0x60), |
3eb2c7ec PZ |
265 | }; |
266 | ||
3eb2c7ec PZ |
267 | static bool ltc3589_writeable_reg(struct device *dev, unsigned int reg) |
268 | { | |
269 | switch (reg) { | |
270 | case LTC3589_IRQSTAT: | |
271 | case LTC3589_SCR1: | |
272 | case LTC3589_OVEN: | |
273 | case LTC3589_SCR2: | |
274 | case LTC3589_VCCR: | |
275 | case LTC3589_CLIRQ: | |
276 | case LTC3589_B1DTV1: | |
277 | case LTC3589_B1DTV2: | |
278 | case LTC3589_VRRCR: | |
279 | case LTC3589_B2DTV1: | |
280 | case LTC3589_B2DTV2: | |
281 | case LTC3589_B3DTV1: | |
282 | case LTC3589_B3DTV2: | |
283 | case LTC3589_L2DTV1: | |
284 | case LTC3589_L2DTV2: | |
285 | return true; | |
286 | } | |
287 | return false; | |
288 | } | |
289 | ||
290 | static bool ltc3589_readable_reg(struct device *dev, unsigned int reg) | |
291 | { | |
292 | switch (reg) { | |
293 | case LTC3589_IRQSTAT: | |
294 | case LTC3589_SCR1: | |
295 | case LTC3589_OVEN: | |
296 | case LTC3589_SCR2: | |
297 | case LTC3589_PGSTAT: | |
298 | case LTC3589_VCCR: | |
299 | case LTC3589_B1DTV1: | |
300 | case LTC3589_B1DTV2: | |
301 | case LTC3589_VRRCR: | |
302 | case LTC3589_B2DTV1: | |
303 | case LTC3589_B2DTV2: | |
304 | case LTC3589_B3DTV1: | |
305 | case LTC3589_B3DTV2: | |
306 | case LTC3589_L2DTV1: | |
307 | case LTC3589_L2DTV2: | |
308 | return true; | |
309 | } | |
310 | return false; | |
311 | } | |
312 | ||
313 | static bool ltc3589_volatile_reg(struct device *dev, unsigned int reg) | |
314 | { | |
315 | switch (reg) { | |
316 | case LTC3589_IRQSTAT: | |
317 | case LTC3589_PGSTAT: | |
c5bb725a | 318 | case LTC3589_VCCR: |
3eb2c7ec PZ |
319 | return true; |
320 | } | |
321 | return false; | |
322 | } | |
323 | ||
ec867726 | 324 | static const struct reg_default ltc3589_reg_defaults[] = { |
3eb2c7ec PZ |
325 | { LTC3589_SCR1, 0x00 }, |
326 | { LTC3589_OVEN, 0x00 }, | |
327 | { LTC3589_SCR2, 0x00 }, | |
328 | { LTC3589_VCCR, 0x00 }, | |
329 | { LTC3589_B1DTV1, 0x19 }, | |
330 | { LTC3589_B1DTV2, 0x19 }, | |
331 | { LTC3589_VRRCR, 0xff }, | |
332 | { LTC3589_B2DTV1, 0x19 }, | |
333 | { LTC3589_B2DTV2, 0x19 }, | |
334 | { LTC3589_B3DTV1, 0x19 }, | |
335 | { LTC3589_B3DTV2, 0x19 }, | |
336 | { LTC3589_L2DTV1, 0x19 }, | |
337 | { LTC3589_L2DTV2, 0x19 }, | |
338 | }; | |
339 | ||
340 | static const struct regmap_config ltc3589_regmap_config = { | |
341 | .reg_bits = 8, | |
342 | .val_bits = 8, | |
343 | .writeable_reg = ltc3589_writeable_reg, | |
344 | .readable_reg = ltc3589_readable_reg, | |
345 | .volatile_reg = ltc3589_volatile_reg, | |
346 | .max_register = LTC3589_L2DTV2, | |
347 | .reg_defaults = ltc3589_reg_defaults, | |
348 | .num_reg_defaults = ARRAY_SIZE(ltc3589_reg_defaults), | |
1c96a2f6 DF |
349 | .use_single_read = true, |
350 | .use_single_write = true, | |
3eb2c7ec PZ |
351 | .cache_type = REGCACHE_RBTREE, |
352 | }; | |
353 | ||
3eb2c7ec PZ |
354 | static irqreturn_t ltc3589_isr(int irq, void *dev_id) |
355 | { | |
356 | struct ltc3589 *ltc3589 = dev_id; | |
357 | unsigned int i, irqstat, event; | |
358 | ||
359 | regmap_read(ltc3589->regmap, LTC3589_IRQSTAT, &irqstat); | |
360 | ||
361 | if (irqstat & LTC3589_IRQSTAT_THERMAL_WARN) { | |
362 | event = REGULATOR_EVENT_OVER_TEMP; | |
e9c142b0 | 363 | for (i = 0; i < LTC3589_NUM_REGULATORS; i++) |
3eb2c7ec PZ |
364 | regulator_notifier_call_chain(ltc3589->regulators[i], |
365 | event, NULL); | |
366 | } | |
367 | ||
368 | if (irqstat & LTC3589_IRQSTAT_UNDERVOLT_WARN) { | |
369 | event = REGULATOR_EVENT_UNDER_VOLTAGE; | |
e9c142b0 | 370 | for (i = 0; i < LTC3589_NUM_REGULATORS; i++) |
3eb2c7ec PZ |
371 | regulator_notifier_call_chain(ltc3589->regulators[i], |
372 | event, NULL); | |
373 | } | |
374 | ||
375 | /* Clear warning condition */ | |
376 | regmap_write(ltc3589->regmap, LTC3589_CLIRQ, 0); | |
377 | ||
378 | return IRQ_HANDLED; | |
379 | } | |
380 | ||
78c8f6cd | 381 | static int ltc3589_probe(struct i2c_client *client) |
3eb2c7ec | 382 | { |
78c8f6cd | 383 | const struct i2c_device_id *id = i2c_client_get_device_id(client); |
3eb2c7ec | 384 | struct device *dev = &client->dev; |
63c7c296 | 385 | struct regulator_desc *descs; |
3eb2c7ec PZ |
386 | struct ltc3589 *ltc3589; |
387 | int i, ret; | |
388 | ||
389 | ltc3589 = devm_kzalloc(dev, sizeof(*ltc3589), GFP_KERNEL); | |
390 | if (!ltc3589) | |
391 | return -ENOMEM; | |
392 | ||
393 | i2c_set_clientdata(client, ltc3589); | |
45a86172 JMC |
394 | if (client->dev.of_node) |
395 | ltc3589->variant = (enum ltc3589_variant) | |
396 | of_device_get_match_data(&client->dev); | |
397 | else | |
398 | ltc3589->variant = id->driver_data; | |
3eb2c7ec PZ |
399 | ltc3589->dev = dev; |
400 | ||
401 | descs = ltc3589->regulator_descs; | |
402 | memcpy(descs, ltc3589_regulators, sizeof(ltc3589_regulators)); | |
403 | if (ltc3589->variant == LTC3589) { | |
63c7c296 AL |
404 | descs[LTC3589_LDO3].fixed_uV = 1800000; |
405 | descs[LTC3589_LDO4].volt_table = ltc3589_ldo4; | |
3eb2c7ec | 406 | } else { |
63c7c296 AL |
407 | descs[LTC3589_LDO3].fixed_uV = 2800000; |
408 | descs[LTC3589_LDO4].volt_table = ltc3589_12_ldo4; | |
3eb2c7ec PZ |
409 | } |
410 | ||
411 | ltc3589->regmap = devm_regmap_init_i2c(client, <c3589_regmap_config); | |
412 | if (IS_ERR(ltc3589->regmap)) { | |
413 | ret = PTR_ERR(ltc3589->regmap); | |
414 | dev_err(dev, "failed to initialize regmap: %d\n", ret); | |
415 | return ret; | |
416 | } | |
417 | ||
3eb2c7ec | 418 | for (i = 0; i < LTC3589_NUM_REGULATORS; i++) { |
63c7c296 | 419 | struct regulator_desc *desc = <c3589->regulator_descs[i]; |
3eb2c7ec PZ |
420 | struct regulator_config config = { }; |
421 | ||
3eb2c7ec | 422 | config.dev = dev; |
3eb2c7ec | 423 | config.driver_data = ltc3589; |
3eb2c7ec PZ |
424 | |
425 | ltc3589->regulators[i] = devm_regulator_register(dev, desc, | |
426 | &config); | |
427 | if (IS_ERR(ltc3589->regulators[i])) { | |
428 | ret = PTR_ERR(ltc3589->regulators[i]); | |
429 | dev_err(dev, "failed to register regulator %s: %d\n", | |
430 | desc->name, ret); | |
431 | return ret; | |
432 | } | |
433 | } | |
434 | ||
d4930cf0 BW |
435 | if (client->irq) { |
436 | ret = devm_request_threaded_irq(dev, client->irq, NULL, | |
437 | ltc3589_isr, | |
438 | IRQF_TRIGGER_LOW | IRQF_ONESHOT, | |
439 | client->name, ltc3589); | |
440 | if (ret) { | |
441 | dev_err(dev, "Failed to request IRQ: %d\n", ret); | |
442 | return ret; | |
443 | } | |
3eb2c7ec PZ |
444 | } |
445 | ||
446 | return 0; | |
447 | } | |
448 | ||
6d284bb1 | 449 | static const struct i2c_device_id ltc3589_i2c_id[] = { |
3eb2c7ec PZ |
450 | { "ltc3589", LTC3589 }, |
451 | { "ltc3589-1", LTC3589_1 }, | |
452 | { "ltc3589-2", LTC3589_2 }, | |
453 | { } | |
454 | }; | |
455 | MODULE_DEVICE_TABLE(i2c, ltc3589_i2c_id); | |
456 | ||
8ece3156 | 457 | static const struct of_device_id __maybe_unused ltc3589_of_match[] = { |
45a86172 JMC |
458 | { |
459 | .compatible = "lltc,ltc3589", | |
460 | .data = (void *)LTC3589, | |
461 | }, | |
462 | { | |
463 | .compatible = "lltc,ltc3589-1", | |
464 | .data = (void *)LTC3589_1, | |
465 | }, | |
466 | { | |
467 | .compatible = "lltc,ltc3589-2", | |
468 | .data = (void *)LTC3589_2, | |
469 | }, | |
470 | { }, | |
471 | }; | |
472 | MODULE_DEVICE_TABLE(of, ltc3589_of_match); | |
473 | ||
3eb2c7ec PZ |
474 | static struct i2c_driver ltc3589_driver = { |
475 | .driver = { | |
476 | .name = DRIVER_NAME, | |
45a86172 | 477 | .of_match_table = of_match_ptr(ltc3589_of_match), |
3eb2c7ec | 478 | }, |
78c8f6cd | 479 | .probe_new = ltc3589_probe, |
3eb2c7ec PZ |
480 | .id_table = ltc3589_i2c_id, |
481 | }; | |
482 | module_i2c_driver(ltc3589_driver); | |
483 | ||
484 | MODULE_AUTHOR("Philipp Zabel <p.zabel@pengutronix.de>"); | |
485 | MODULE_DESCRIPTION("Regulator driver for Linear Technology LTC3589(-1,2)"); | |
486 | MODULE_LICENSE("GPL v2"); |