Commit | Line | Data |
---|---|---|
2945fbc2 GG |
1 | /* |
2 | * TI Palmas MFD Driver | |
3 | * | |
4 | * Copyright 2011-2012 Texas Instruments Inc. | |
5 | * | |
6 | * Author: Graeme Gregory <gg@slimlogic.co.uk> | |
7 | * | |
8 | * This program is free software; you can redistribute it and/or modify it | |
9 | * under the terms of the GNU General Public License as published by the | |
10 | * Free Software Foundation; either version 2 of the License, or (at your | |
11 | * option) any later version. | |
12 | * | |
13 | */ | |
14 | ||
15 | #include <linux/module.h> | |
16 | #include <linux/moduleparam.h> | |
17 | #include <linux/init.h> | |
18 | #include <linux/slab.h> | |
19 | #include <linux/i2c.h> | |
20 | #include <linux/interrupt.h> | |
21 | #include <linux/irq.h> | |
22 | #include <linux/regmap.h> | |
23 | #include <linux/err.h> | |
24 | #include <linux/mfd/core.h> | |
25 | #include <linux/mfd/palmas.h> | |
26 | ||
2945fbc2 GG |
27 | enum palmas_ids { |
28 | PALMAS_PMIC_ID, | |
29 | PALMAS_GPIO_ID, | |
30 | PALMAS_LEDS_ID, | |
31 | PALMAS_WDT_ID, | |
32 | PALMAS_RTC_ID, | |
33 | PALMAS_PWRBUTTON_ID, | |
34 | PALMAS_GPADC_ID, | |
35 | PALMAS_RESOURCE_ID, | |
36 | PALMAS_CLK_ID, | |
37 | PALMAS_PWM_ID, | |
38 | PALMAS_USB_ID, | |
39 | }; | |
40 | ||
41 | static const struct mfd_cell palmas_children[] = { | |
42 | { | |
43 | .name = "palmas-pmic", | |
44 | .id = PALMAS_PMIC_ID, | |
45 | }, | |
46 | { | |
47 | .name = "palmas-gpio", | |
48 | .id = PALMAS_GPIO_ID, | |
49 | }, | |
50 | { | |
51 | .name = "palmas-leds", | |
52 | .id = PALMAS_LEDS_ID, | |
53 | }, | |
54 | { | |
55 | .name = "palmas-wdt", | |
56 | .id = PALMAS_WDT_ID, | |
57 | }, | |
58 | { | |
59 | .name = "palmas-rtc", | |
2945fbc2 GG |
60 | .id = PALMAS_RTC_ID, |
61 | }, | |
62 | { | |
63 | .name = "palmas-pwrbutton", | |
2945fbc2 GG |
64 | .id = PALMAS_PWRBUTTON_ID, |
65 | }, | |
66 | { | |
67 | .name = "palmas-gpadc", | |
2945fbc2 GG |
68 | .id = PALMAS_GPADC_ID, |
69 | }, | |
70 | { | |
71 | .name = "palmas-resource", | |
72 | .id = PALMAS_RESOURCE_ID, | |
73 | }, | |
74 | { | |
75 | .name = "palmas-clk", | |
76 | .id = PALMAS_CLK_ID, | |
77 | }, | |
78 | { | |
79 | .name = "palmas-pwm", | |
80 | .id = PALMAS_PWM_ID, | |
81 | }, | |
82 | { | |
83 | .name = "palmas-usb", | |
2945fbc2 GG |
84 | .id = PALMAS_USB_ID, |
85 | } | |
86 | }; | |
87 | ||
88 | static const struct regmap_config palmas_regmap_config[PALMAS_NUM_CLIENTS] = { | |
89 | { | |
90 | .reg_bits = 8, | |
91 | .val_bits = 8, | |
92 | .max_register = PALMAS_BASE_TO_REG(PALMAS_PU_PD_OD_BASE, | |
93 | PALMAS_PRIMARY_SECONDARY_PAD3), | |
94 | }, | |
95 | { | |
96 | .reg_bits = 8, | |
97 | .val_bits = 8, | |
98 | .max_register = PALMAS_BASE_TO_REG(PALMAS_GPADC_BASE, | |
99 | PALMAS_GPADC_SMPS_VSEL_MONITORING), | |
100 | }, | |
101 | { | |
102 | .reg_bits = 8, | |
103 | .val_bits = 8, | |
104 | .max_register = PALMAS_BASE_TO_REG(PALMAS_TRIM_GPADC_BASE, | |
105 | PALMAS_GPADC_TRIM16), | |
106 | }, | |
107 | }; | |
108 | ||
109 | static const struct regmap_irq palmas_irqs[] = { | |
110 | /* INT1 IRQs */ | |
111 | [PALMAS_CHARG_DET_N_VBUS_OVV_IRQ] = { | |
112 | .mask = PALMAS_INT1_STATUS_CHARG_DET_N_VBUS_OVV, | |
113 | }, | |
114 | [PALMAS_PWRON_IRQ] = { | |
115 | .mask = PALMAS_INT1_STATUS_PWRON, | |
116 | }, | |
117 | [PALMAS_LONG_PRESS_KEY_IRQ] = { | |
118 | .mask = PALMAS_INT1_STATUS_LONG_PRESS_KEY, | |
119 | }, | |
120 | [PALMAS_RPWRON_IRQ] = { | |
121 | .mask = PALMAS_INT1_STATUS_RPWRON, | |
122 | }, | |
123 | [PALMAS_PWRDOWN_IRQ] = { | |
124 | .mask = PALMAS_INT1_STATUS_PWRDOWN, | |
125 | }, | |
126 | [PALMAS_HOTDIE_IRQ] = { | |
127 | .mask = PALMAS_INT1_STATUS_HOTDIE, | |
128 | }, | |
129 | [PALMAS_VSYS_MON_IRQ] = { | |
130 | .mask = PALMAS_INT1_STATUS_VSYS_MON, | |
131 | }, | |
132 | [PALMAS_VBAT_MON_IRQ] = { | |
133 | .mask = PALMAS_INT1_STATUS_VBAT_MON, | |
134 | }, | |
135 | /* INT2 IRQs*/ | |
136 | [PALMAS_RTC_ALARM_IRQ] = { | |
137 | .mask = PALMAS_INT2_STATUS_RTC_ALARM, | |
138 | .reg_offset = 1, | |
139 | }, | |
140 | [PALMAS_RTC_TIMER_IRQ] = { | |
141 | .mask = PALMAS_INT2_STATUS_RTC_TIMER, | |
142 | .reg_offset = 1, | |
143 | }, | |
144 | [PALMAS_WDT_IRQ] = { | |
145 | .mask = PALMAS_INT2_STATUS_WDT, | |
146 | .reg_offset = 1, | |
147 | }, | |
148 | [PALMAS_BATREMOVAL_IRQ] = { | |
149 | .mask = PALMAS_INT2_STATUS_BATREMOVAL, | |
150 | .reg_offset = 1, | |
151 | }, | |
152 | [PALMAS_RESET_IN_IRQ] = { | |
153 | .mask = PALMAS_INT2_STATUS_RESET_IN, | |
154 | .reg_offset = 1, | |
155 | }, | |
156 | [PALMAS_FBI_BB_IRQ] = { | |
157 | .mask = PALMAS_INT2_STATUS_FBI_BB, | |
158 | .reg_offset = 1, | |
159 | }, | |
160 | [PALMAS_SHORT_IRQ] = { | |
161 | .mask = PALMAS_INT2_STATUS_SHORT, | |
162 | .reg_offset = 1, | |
163 | }, | |
164 | [PALMAS_VAC_ACOK_IRQ] = { | |
165 | .mask = PALMAS_INT2_STATUS_VAC_ACOK, | |
166 | .reg_offset = 1, | |
167 | }, | |
168 | /* INT3 IRQs */ | |
169 | [PALMAS_GPADC_AUTO_0_IRQ] = { | |
170 | .mask = PALMAS_INT3_STATUS_GPADC_AUTO_0, | |
171 | .reg_offset = 2, | |
172 | }, | |
173 | [PALMAS_GPADC_AUTO_1_IRQ] = { | |
174 | .mask = PALMAS_INT3_STATUS_GPADC_AUTO_1, | |
175 | .reg_offset = 2, | |
176 | }, | |
177 | [PALMAS_GPADC_EOC_SW_IRQ] = { | |
178 | .mask = PALMAS_INT3_STATUS_GPADC_EOC_SW, | |
179 | .reg_offset = 2, | |
180 | }, | |
181 | [PALMAS_GPADC_EOC_RT_IRQ] = { | |
182 | .mask = PALMAS_INT3_STATUS_GPADC_EOC_RT, | |
183 | .reg_offset = 2, | |
184 | }, | |
185 | [PALMAS_ID_OTG_IRQ] = { | |
186 | .mask = PALMAS_INT3_STATUS_ID_OTG, | |
187 | .reg_offset = 2, | |
188 | }, | |
189 | [PALMAS_ID_IRQ] = { | |
190 | .mask = PALMAS_INT3_STATUS_ID, | |
191 | .reg_offset = 2, | |
192 | }, | |
193 | [PALMAS_VBUS_OTG_IRQ] = { | |
194 | .mask = PALMAS_INT3_STATUS_VBUS_OTG, | |
195 | .reg_offset = 2, | |
196 | }, | |
197 | [PALMAS_VBUS_IRQ] = { | |
198 | .mask = PALMAS_INT3_STATUS_VBUS, | |
199 | .reg_offset = 2, | |
200 | }, | |
201 | /* INT4 IRQs */ | |
202 | [PALMAS_GPIO_0_IRQ] = { | |
203 | .mask = PALMAS_INT4_STATUS_GPIO_0, | |
204 | .reg_offset = 3, | |
205 | }, | |
206 | [PALMAS_GPIO_1_IRQ] = { | |
207 | .mask = PALMAS_INT4_STATUS_GPIO_1, | |
208 | .reg_offset = 3, | |
209 | }, | |
210 | [PALMAS_GPIO_2_IRQ] = { | |
211 | .mask = PALMAS_INT4_STATUS_GPIO_2, | |
212 | .reg_offset = 3, | |
213 | }, | |
214 | [PALMAS_GPIO_3_IRQ] = { | |
215 | .mask = PALMAS_INT4_STATUS_GPIO_3, | |
216 | .reg_offset = 3, | |
217 | }, | |
218 | [PALMAS_GPIO_4_IRQ] = { | |
219 | .mask = PALMAS_INT4_STATUS_GPIO_4, | |
220 | .reg_offset = 3, | |
221 | }, | |
222 | [PALMAS_GPIO_5_IRQ] = { | |
223 | .mask = PALMAS_INT4_STATUS_GPIO_5, | |
224 | .reg_offset = 3, | |
225 | }, | |
226 | [PALMAS_GPIO_6_IRQ] = { | |
227 | .mask = PALMAS_INT4_STATUS_GPIO_6, | |
228 | .reg_offset = 3, | |
229 | }, | |
230 | [PALMAS_GPIO_7_IRQ] = { | |
231 | .mask = PALMAS_INT4_STATUS_GPIO_7, | |
232 | .reg_offset = 3, | |
233 | }, | |
234 | }; | |
235 | ||
236 | static struct regmap_irq_chip palmas_irq_chip = { | |
237 | .name = "palmas", | |
238 | .irqs = palmas_irqs, | |
239 | .num_irqs = ARRAY_SIZE(palmas_irqs), | |
240 | ||
241 | .num_regs = 4, | |
242 | .irq_reg_stride = 5, | |
243 | .status_base = PALMAS_BASE_TO_REG(PALMAS_INTERRUPT_BASE, | |
244 | PALMAS_INT1_STATUS), | |
245 | .mask_base = PALMAS_BASE_TO_REG(PALMAS_INTERRUPT_BASE, | |
246 | PALMAS_INT1_MASK), | |
247 | }; | |
248 | ||
249 | static int __devinit palmas_i2c_probe(struct i2c_client *i2c, | |
250 | const struct i2c_device_id *id) | |
251 | { | |
252 | struct palmas *palmas; | |
253 | struct palmas_platform_data *pdata; | |
254 | int ret = 0, i; | |
255 | unsigned int reg, addr; | |
256 | int slave; | |
257 | struct mfd_cell *children; | |
258 | ||
259 | pdata = dev_get_platdata(&i2c->dev); | |
260 | if (!pdata) | |
261 | return -EINVAL; | |
262 | ||
263 | palmas = devm_kzalloc(&i2c->dev, sizeof(struct palmas), GFP_KERNEL); | |
264 | if (palmas == NULL) | |
265 | return -ENOMEM; | |
266 | ||
267 | i2c_set_clientdata(i2c, palmas); | |
268 | palmas->dev = &i2c->dev; | |
269 | palmas->id = id->driver_data; | |
270 | palmas->irq = i2c->irq; | |
271 | ||
272 | for (i = 0; i < PALMAS_NUM_CLIENTS; i++) { | |
273 | if (i == 0) | |
274 | palmas->i2c_clients[i] = i2c; | |
275 | else { | |
276 | palmas->i2c_clients[i] = | |
277 | i2c_new_dummy(i2c->adapter, | |
278 | i2c->addr + i); | |
279 | if (!palmas->i2c_clients[i]) { | |
280 | dev_err(palmas->dev, | |
281 | "can't attach client %d\n", i); | |
282 | ret = -ENOMEM; | |
283 | goto err; | |
284 | } | |
285 | } | |
286 | palmas->regmap[i] = devm_regmap_init_i2c(palmas->i2c_clients[i], | |
287 | &palmas_regmap_config[i]); | |
288 | if (IS_ERR(palmas->regmap[i])) { | |
289 | ret = PTR_ERR(palmas->regmap[i]); | |
290 | dev_err(palmas->dev, | |
291 | "Failed to allocate regmap %d, err: %d\n", | |
292 | i, ret); | |
293 | goto err; | |
294 | } | |
295 | } | |
296 | ||
b330f85d GG |
297 | /* Change IRQ into clear on read mode for efficiency */ |
298 | slave = PALMAS_BASE_TO_SLAVE(PALMAS_INTERRUPT_BASE); | |
299 | addr = PALMAS_BASE_TO_REG(PALMAS_INTERRUPT_BASE, PALMAS_INT_CTRL); | |
300 | reg = PALMAS_INT_CTRL_INT_CLEAR; | |
301 | ||
302 | regmap_write(palmas->regmap[slave], addr, reg); | |
303 | ||
304 | ret = regmap_add_irq_chip(palmas->regmap[slave], palmas->irq, | |
8664fade | 305 | IRQF_ONESHOT | IRQF_TRIGGER_LOW, 0, &palmas_irq_chip, |
2945fbc2 GG |
306 | &palmas->irq_data); |
307 | if (ret < 0) | |
308 | goto err; | |
309 | ||
310 | slave = PALMAS_BASE_TO_SLAVE(PALMAS_PU_PD_OD_BASE); | |
311 | addr = PALMAS_BASE_TO_REG(PALMAS_PU_PD_OD_BASE, | |
312 | PALMAS_PRIMARY_SECONDARY_PAD1); | |
313 | ||
314 | if (pdata->mux_from_pdata) { | |
315 | reg = pdata->pad1; | |
316 | ret = regmap_write(palmas->regmap[slave], addr, reg); | |
317 | if (ret) | |
3f78decc | 318 | goto err_irq; |
2945fbc2 GG |
319 | } else { |
320 | ret = regmap_read(palmas->regmap[slave], addr, ®); | |
321 | if (ret) | |
3f78decc | 322 | goto err_irq; |
2945fbc2 GG |
323 | } |
324 | ||
325 | if (!(reg & PALMAS_PRIMARY_SECONDARY_PAD1_GPIO_0)) | |
326 | palmas->gpio_muxed |= PALMAS_GPIO_0_MUXED; | |
327 | if (!(reg & PALMAS_PRIMARY_SECONDARY_PAD1_GPIO_1_MASK)) | |
328 | palmas->gpio_muxed |= PALMAS_GPIO_1_MUXED; | |
329 | else if ((reg & PALMAS_PRIMARY_SECONDARY_PAD1_GPIO_1_MASK) == | |
330 | (2 << PALMAS_PRIMARY_SECONDARY_PAD1_GPIO_1_SHIFT)) | |
331 | palmas->led_muxed |= PALMAS_LED1_MUXED; | |
332 | else if ((reg & PALMAS_PRIMARY_SECONDARY_PAD1_GPIO_1_MASK) == | |
333 | (3 << PALMAS_PRIMARY_SECONDARY_PAD1_GPIO_1_SHIFT)) | |
334 | palmas->pwm_muxed |= PALMAS_PWM1_MUXED; | |
335 | if (!(reg & PALMAS_PRIMARY_SECONDARY_PAD1_GPIO_2_MASK)) | |
336 | palmas->gpio_muxed |= PALMAS_GPIO_2_MUXED; | |
337 | else if ((reg & PALMAS_PRIMARY_SECONDARY_PAD1_GPIO_2_MASK) == | |
338 | (2 << PALMAS_PRIMARY_SECONDARY_PAD1_GPIO_2_SHIFT)) | |
339 | palmas->led_muxed |= PALMAS_LED2_MUXED; | |
340 | else if ((reg & PALMAS_PRIMARY_SECONDARY_PAD1_GPIO_2_MASK) == | |
341 | (3 << PALMAS_PRIMARY_SECONDARY_PAD1_GPIO_2_SHIFT)) | |
342 | palmas->pwm_muxed |= PALMAS_PWM2_MUXED; | |
343 | if (!(reg & PALMAS_PRIMARY_SECONDARY_PAD1_GPIO_3)) | |
344 | palmas->gpio_muxed |= PALMAS_GPIO_3_MUXED; | |
345 | ||
346 | addr = PALMAS_BASE_TO_REG(PALMAS_PU_PD_OD_BASE, | |
347 | PALMAS_PRIMARY_SECONDARY_PAD2); | |
348 | ||
349 | if (pdata->mux_from_pdata) { | |
350 | reg = pdata->pad2; | |
351 | ret = regmap_write(palmas->regmap[slave], addr, reg); | |
352 | if (ret) | |
3f78decc | 353 | goto err_irq; |
2945fbc2 GG |
354 | } else { |
355 | ret = regmap_read(palmas->regmap[slave], addr, ®); | |
356 | if (ret) | |
3f78decc | 357 | goto err_irq; |
2945fbc2 GG |
358 | } |
359 | ||
360 | if (!(reg & PALMAS_PRIMARY_SECONDARY_PAD2_GPIO_4)) | |
361 | palmas->gpio_muxed |= PALMAS_GPIO_4_MUXED; | |
362 | if (!(reg & PALMAS_PRIMARY_SECONDARY_PAD2_GPIO_5_MASK)) | |
363 | palmas->gpio_muxed |= PALMAS_GPIO_5_MUXED; | |
364 | if (!(reg & PALMAS_PRIMARY_SECONDARY_PAD2_GPIO_6)) | |
365 | palmas->gpio_muxed |= PALMAS_GPIO_6_MUXED; | |
366 | if (!(reg & PALMAS_PRIMARY_SECONDARY_PAD2_GPIO_7_MASK)) | |
367 | palmas->gpio_muxed |= PALMAS_GPIO_7_MUXED; | |
368 | ||
369 | dev_info(palmas->dev, "Muxing GPIO %x, PWM %x, LED %x\n", | |
370 | palmas->gpio_muxed, palmas->pwm_muxed, | |
371 | palmas->led_muxed); | |
372 | ||
373 | reg = pdata->power_ctrl; | |
374 | ||
375 | slave = PALMAS_BASE_TO_SLAVE(PALMAS_PMU_CONTROL_BASE); | |
376 | addr = PALMAS_BASE_TO_REG(PALMAS_PMU_CONTROL_BASE, PALMAS_POWER_CTRL); | |
377 | ||
378 | ret = regmap_write(palmas->regmap[slave], addr, reg); | |
379 | if (ret) | |
3f78decc | 380 | goto err_irq; |
2945fbc2 GG |
381 | |
382 | children = kmemdup(palmas_children, sizeof(palmas_children), | |
383 | GFP_KERNEL); | |
384 | if (!children) { | |
385 | ret = -ENOMEM; | |
3f78decc | 386 | goto err_irq; |
2945fbc2 GG |
387 | } |
388 | ||
adc20e02 GG |
389 | children[PALMAS_PMIC_ID].platform_data = pdata->pmic_pdata; |
390 | children[PALMAS_PMIC_ID].pdata_size = sizeof(*pdata->pmic_pdata); | |
391 | ||
190ef1a6 GG |
392 | children[PALMAS_GPADC_ID].platform_data = pdata->gpadc_pdata; |
393 | children[PALMAS_GPADC_ID].pdata_size = sizeof(*pdata->gpadc_pdata); | |
394 | ||
395 | children[PALMAS_RESOURCE_ID].platform_data = pdata->resource_pdata; | |
396 | children[PALMAS_RESOURCE_ID].pdata_size = | |
397 | sizeof(*pdata->resource_pdata); | |
398 | ||
399 | children[PALMAS_USB_ID].platform_data = pdata->usb_pdata; | |
400 | children[PALMAS_USB_ID].pdata_size = sizeof(*pdata->usb_pdata); | |
401 | ||
402 | children[PALMAS_CLK_ID].platform_data = pdata->clk_pdata; | |
403 | children[PALMAS_CLK_ID].pdata_size = sizeof(*pdata->clk_pdata); | |
404 | ||
2945fbc2 GG |
405 | ret = mfd_add_devices(palmas->dev, -1, |
406 | children, ARRAY_SIZE(palmas_children), | |
55692af5 MB |
407 | NULL, regmap_irq_chip_get_base(palmas->irq_data), |
408 | NULL); | |
2945fbc2 GG |
409 | kfree(children); |
410 | ||
411 | if (ret < 0) | |
3f78decc | 412 | goto err_devices; |
2945fbc2 GG |
413 | |
414 | return ret; | |
415 | ||
3f78decc | 416 | err_devices: |
2945fbc2 | 417 | mfd_remove_devices(palmas->dev); |
3f78decc GG |
418 | err_irq: |
419 | regmap_del_irq_chip(palmas->irq, palmas->irq_data); | |
420 | err: | |
2945fbc2 GG |
421 | return ret; |
422 | } | |
423 | ||
424 | static int palmas_i2c_remove(struct i2c_client *i2c) | |
425 | { | |
426 | struct palmas *palmas = i2c_get_clientdata(i2c); | |
427 | ||
428 | mfd_remove_devices(palmas->dev); | |
429 | regmap_del_irq_chip(palmas->irq, palmas->irq_data); | |
430 | ||
431 | return 0; | |
432 | } | |
433 | ||
434 | static const struct i2c_device_id palmas_i2c_id[] = { | |
435 | { "palmas", }, | |
436 | { "twl6035", }, | |
437 | { "twl6037", }, | |
438 | { "tps65913", }, | |
00ba81c1 | 439 | { /* end */ } |
2945fbc2 GG |
440 | }; |
441 | MODULE_DEVICE_TABLE(i2c, palmas_i2c_id); | |
442 | ||
443 | static struct of_device_id __devinitdata of_palmas_match_tbl[] = { | |
444 | { .compatible = "ti,palmas", }, | |
445 | { /* end */ } | |
446 | }; | |
447 | ||
448 | static struct i2c_driver palmas_i2c_driver = { | |
449 | .driver = { | |
450 | .name = "palmas", | |
451 | .of_match_table = of_palmas_match_tbl, | |
452 | .owner = THIS_MODULE, | |
453 | }, | |
454 | .probe = palmas_i2c_probe, | |
455 | .remove = palmas_i2c_remove, | |
456 | .id_table = palmas_i2c_id, | |
457 | }; | |
458 | ||
459 | static int __init palmas_i2c_init(void) | |
460 | { | |
461 | return i2c_add_driver(&palmas_i2c_driver); | |
462 | } | |
463 | /* init early so consumer devices can complete system boot */ | |
464 | subsys_initcall(palmas_i2c_init); | |
465 | ||
466 | static void __exit palmas_i2c_exit(void) | |
467 | { | |
468 | i2c_del_driver(&palmas_i2c_driver); | |
469 | } | |
470 | module_exit(palmas_i2c_exit); | |
471 | ||
472 | MODULE_AUTHOR("Graeme Gregory <gg@slimlogic.co.uk>"); | |
473 | MODULE_DESCRIPTION("Palmas chip family multi-function driver"); | |
474 | MODULE_LICENSE("GPL"); |