Commit | Line | Data |
---|---|---|
2e727f17 GI |
1 | /* |
2 | * TWL4030/TPS65950 BCI (Battery Charger Interface) driver | |
3 | * | |
4 | * Copyright (C) 2010 Gražvydas Ignotas <notasas@gmail.com> | |
5 | * | |
6 | * based on twl4030_bci_battery.c by TI | |
7 | * Copyright (C) 2008 Texas Instruments, Inc. | |
8 | * | |
9 | * This program is free software; you can redistribute it and/or modify | |
10 | * it under the terms of the GNU General Public License as published by | |
11 | * the Free Software Foundation; either version 2 of the License, or | |
12 | * (at your option) any later version. | |
13 | */ | |
14 | ||
15 | #include <linux/init.h> | |
16 | #include <linux/module.h> | |
17 | #include <linux/slab.h> | |
ded017ee | 18 | #include <linux/err.h> |
2e727f17 GI |
19 | #include <linux/platform_device.h> |
20 | #include <linux/interrupt.h> | |
21 | #include <linux/i2c/twl.h> | |
22 | #include <linux/power_supply.h> | |
23 | #include <linux/notifier.h> | |
24 | #include <linux/usb/otg.h> | |
e4ae537e | 25 | #include <linux/i2c/twl4030-madc.h> |
2e727f17 | 26 | |
7f4a633d N |
27 | #define TWL4030_BCIMDEN 0x00 |
28 | #define TWL4030_BCIMDKEY 0x01 | |
2e727f17 GI |
29 | #define TWL4030_BCIMSTATEC 0x02 |
30 | #define TWL4030_BCIICHG 0x08 | |
31 | #define TWL4030_BCIVAC 0x0a | |
32 | #define TWL4030_BCIVBUS 0x0c | |
61a7784e | 33 | #define TWL4030_BCIMFSTS3 0x0F |
2e727f17 GI |
34 | #define TWL4030_BCIMFSTS4 0x10 |
35 | #define TWL4030_BCICTL1 0x23 | |
210d4bc8 | 36 | #define TWL4030_BB_CFG 0x12 |
1098cb58 N |
37 | #define TWL4030_BCIIREF1 0x27 |
38 | #define TWL4030_BCIIREF2 0x28 | |
39 | #define TWL4030_BCIMFKEY 0x11 | |
7f4a633d | 40 | #define TWL4030_BCIMFEN3 0x14 |
1098cb58 N |
41 | #define TWL4030_BCIMFTH8 0x1d |
42 | #define TWL4030_BCIMFTH9 0x1e | |
7f4a633d | 43 | #define TWL4030_BCIWDKEY 0x21 |
2e727f17 | 44 | |
61a7784e NM |
45 | #define TWL4030_BCIMFSTS1 0x01 |
46 | ||
2e727f17 GI |
47 | #define TWL4030_BCIAUTOWEN BIT(5) |
48 | #define TWL4030_CONFIG_DONE BIT(4) | |
7f4a633d | 49 | #define TWL4030_CVENAC BIT(2) |
2e727f17 GI |
50 | #define TWL4030_BCIAUTOUSB BIT(1) |
51 | #define TWL4030_BCIAUTOAC BIT(0) | |
52 | #define TWL4030_CGAIN BIT(5) | |
53 | #define TWL4030_USBFASTMCHG BIT(2) | |
54 | #define TWL4030_STS_VBUS BIT(7) | |
55 | #define TWL4030_STS_USB_ID BIT(2) | |
210d4bc8 | 56 | #define TWL4030_BBCHEN BIT(4) |
94b05cab IH |
57 | #define TWL4030_BBSEL_MASK 0x0c |
58 | #define TWL4030_BBSEL_2V5 0x00 | |
59 | #define TWL4030_BBSEL_3V0 0x04 | |
60 | #define TWL4030_BBSEL_3V1 0x08 | |
61 | #define TWL4030_BBSEL_3V2 0x0c | |
62 | #define TWL4030_BBISEL_MASK 0x03 | |
63 | #define TWL4030_BBISEL_25uA 0x00 | |
64 | #define TWL4030_BBISEL_150uA 0x01 | |
65 | #define TWL4030_BBISEL_500uA 0x02 | |
66 | #define TWL4030_BBISEL_1000uA 0x03 | |
2e727f17 | 67 | |
61a7784e NM |
68 | #define TWL4030_BATSTSPCHG BIT(2) |
69 | #define TWL4030_BATSTSMCHG BIT(6) | |
70 | ||
2e727f17 GI |
71 | /* BCI interrupts */ |
72 | #define TWL4030_WOVF BIT(0) /* Watchdog overflow */ | |
73 | #define TWL4030_TMOVF BIT(1) /* Timer overflow */ | |
74 | #define TWL4030_ICHGHIGH BIT(2) /* Battery charge current high */ | |
75 | #define TWL4030_ICHGLOW BIT(3) /* Battery cc. low / FSM state change */ | |
76 | #define TWL4030_ICHGEOC BIT(4) /* Battery current end-of-charge */ | |
77 | #define TWL4030_TBATOR2 BIT(5) /* Battery temperature out of range 2 */ | |
78 | #define TWL4030_TBATOR1 BIT(6) /* Battery temperature out of range 1 */ | |
79 | #define TWL4030_BATSTS BIT(7) /* Battery status */ | |
80 | ||
81 | #define TWL4030_VBATLVL BIT(0) /* VBAT level */ | |
82 | #define TWL4030_VBATOV BIT(1) /* VBAT overvoltage */ | |
83 | #define TWL4030_VBUSOV BIT(2) /* VBUS overvoltage */ | |
84 | #define TWL4030_ACCHGOV BIT(3) /* Ac charger overvoltage */ | |
85 | ||
86 | #define TWL4030_MSTATEC_USB BIT(4) | |
87 | #define TWL4030_MSTATEC_AC BIT(5) | |
88 | #define TWL4030_MSTATEC_MASK 0x0f | |
89 | #define TWL4030_MSTATEC_QUICK1 0x02 | |
90 | #define TWL4030_MSTATEC_QUICK7 0x07 | |
91 | #define TWL4030_MSTATEC_COMPLETE1 0x0b | |
92 | #define TWL4030_MSTATEC_COMPLETE4 0x0e | |
93 | ||
94 | static bool allow_usb; | |
28d48f04 | 95 | module_param(allow_usb, bool, 0644); |
2e727f17 GI |
96 | MODULE_PARM_DESC(allow_usb, "Allow USB charge drawing default current"); |
97 | ||
98 | struct twl4030_bci { | |
99 | struct device *dev; | |
297d716f KK |
100 | struct power_supply *ac; |
101 | struct power_supply *usb; | |
86753811 | 102 | struct usb_phy *transceiver; |
fcc8ebc9 | 103 | struct notifier_block usb_nb; |
d6ccc442 | 104 | struct work_struct work; |
2e727f17 GI |
105 | int irq_chg; |
106 | int irq_bci; | |
ab37813f | 107 | int usb_enabled; |
d6ccc442 | 108 | |
1098cb58 | 109 | /* |
e4ae537e N |
110 | * ichg_* and *_cur values in uA. If any are 'large', we set |
111 | * CGAIN to '1' which doubles the range for half the | |
112 | * precision. | |
1098cb58 | 113 | */ |
e4ae537e N |
114 | unsigned int ichg_eoc, ichg_lo, ichg_hi; |
115 | unsigned int usb_cur, ac_cur; | |
116 | bool ac_is_active; | |
b04b908d | 117 | int usb_mode, ac_mode; /* charging mode requested */ |
22d4c33f N |
118 | #define CHARGE_OFF 0 |
119 | #define CHARGE_AUTO 1 | |
7f4a633d | 120 | #define CHARGE_LINEAR 2 |
1098cb58 | 121 | |
d6ccc442 | 122 | unsigned long event; |
2e727f17 GI |
123 | }; |
124 | ||
22d4c33f | 125 | /* strings for 'usb_mode' values */ |
7f4a633d | 126 | static char *modes[] = { "off", "auto", "continuous" }; |
22d4c33f | 127 | |
2e727f17 GI |
128 | /* |
129 | * clear and set bits on an given register on a given module | |
130 | */ | |
131 | static int twl4030_clear_set(u8 mod_no, u8 clear, u8 set, u8 reg) | |
132 | { | |
133 | u8 val = 0; | |
134 | int ret; | |
135 | ||
136 | ret = twl_i2c_read_u8(mod_no, &val, reg); | |
137 | if (ret) | |
138 | return ret; | |
139 | ||
140 | val &= ~clear; | |
141 | val |= set; | |
142 | ||
143 | return twl_i2c_write_u8(mod_no, val, reg); | |
144 | } | |
145 | ||
146 | static int twl4030_bci_read(u8 reg, u8 *val) | |
147 | { | |
e9f14c18 | 148 | return twl_i2c_read_u8(TWL_MODULE_MAIN_CHARGE, val, reg); |
2e727f17 GI |
149 | } |
150 | ||
151 | static int twl4030_clear_set_boot_bci(u8 clear, u8 set) | |
152 | { | |
e9f14c18 | 153 | return twl4030_clear_set(TWL_MODULE_PM_MASTER, clear, |
2e727f17 GI |
154 | TWL4030_CONFIG_DONE | TWL4030_BCIAUTOWEN | set, |
155 | TWL4030_PM_MASTER_BOOT_BCI); | |
156 | } | |
157 | ||
158 | static int twl4030bci_read_adc_val(u8 reg) | |
159 | { | |
160 | int ret, temp; | |
161 | u8 val; | |
162 | ||
163 | /* read MSB */ | |
164 | ret = twl4030_bci_read(reg + 1, &val); | |
165 | if (ret) | |
166 | return ret; | |
167 | ||
168 | temp = (int)(val & 0x03) << 8; | |
169 | ||
170 | /* read LSB */ | |
171 | ret = twl4030_bci_read(reg, &val); | |
172 | if (ret) | |
173 | return ret; | |
174 | ||
175 | return temp | val; | |
176 | } | |
177 | ||
61a7784e NM |
178 | /* |
179 | * Check if Battery Pack was present | |
180 | */ | |
181 | static int twl4030_is_battery_present(struct twl4030_bci *bci) | |
182 | { | |
183 | int ret; | |
184 | u8 val = 0; | |
185 | ||
186 | /* Battery presence in Main charge? */ | |
187 | ret = twl_i2c_read_u8(TWL_MODULE_MAIN_CHARGE, &val, TWL4030_BCIMFSTS3); | |
188 | if (ret) | |
189 | return ret; | |
190 | if (val & TWL4030_BATSTSMCHG) | |
191 | return 0; | |
192 | ||
193 | /* | |
194 | * OK, It could be that bootloader did not enable main charger, | |
195 | * pre-charge is h/w auto. So, Battery presence in Pre-charge? | |
196 | */ | |
197 | ret = twl_i2c_read_u8(TWL4030_MODULE_PRECHARGE, &val, | |
198 | TWL4030_BCIMFSTS1); | |
199 | if (ret) | |
200 | return ret; | |
201 | if (val & TWL4030_BATSTSPCHG) | |
202 | return 0; | |
203 | ||
204 | return -ENODEV; | |
205 | } | |
206 | ||
3b542f08 N |
207 | /* |
208 | * TI provided formulas: | |
209 | * CGAIN == 0: ICHG = (BCIICHG * 1.7) / (2^10 - 1) - 0.85 | |
210 | * CGAIN == 1: ICHG = (BCIICHG * 3.4) / (2^10 - 1) - 1.7 | |
211 | * Here we use integer approximation of: | |
212 | * CGAIN == 0: val * 1.6618 - 0.85 * 1000 | |
213 | * CGAIN == 1: (val * 1.6618 - 0.85 * 1000) * 2 | |
214 | */ | |
215 | /* | |
216 | * convert twl register value for currents into uA | |
217 | */ | |
218 | static int regval2ua(int regval, bool cgain) | |
219 | { | |
220 | if (cgain) | |
221 | return (regval * 16618 - 8500 * 1000) / 5; | |
222 | else | |
223 | return (regval * 16618 - 8500 * 1000) / 10; | |
224 | } | |
225 | ||
226 | /* | |
227 | * convert uA currents into twl register value | |
228 | */ | |
229 | static int ua2regval(int ua, bool cgain) | |
230 | { | |
231 | int ret; | |
232 | if (cgain) | |
233 | ua /= 2; | |
234 | ret = (ua * 10 + 8500 * 1000) / 16618; | |
235 | /* rounding problems */ | |
236 | if (ret < 512) | |
237 | ret = 512; | |
238 | return ret; | |
239 | } | |
240 | ||
1098cb58 N |
241 | static int twl4030_charger_update_current(struct twl4030_bci *bci) |
242 | { | |
243 | int status; | |
e4ae537e | 244 | int cur; |
1098cb58 N |
245 | unsigned reg, cur_reg; |
246 | u8 bcictl1, oldreg, fullreg; | |
247 | bool cgain = false; | |
248 | u8 boot_bci; | |
249 | ||
e4ae537e N |
250 | /* |
251 | * If AC (Accessory Charger) voltage exceeds 4.5V (MADC 11) | |
252 | * and AC is enabled, set current for 'ac' | |
253 | */ | |
254 | if (twl4030_get_madc_conversion(11) > 4500) { | |
255 | cur = bci->ac_cur; | |
256 | bci->ac_is_active = true; | |
257 | } else { | |
258 | cur = bci->usb_cur; | |
259 | bci->ac_is_active = false; | |
260 | } | |
261 | ||
1098cb58 N |
262 | /* First, check thresholds and see if cgain is needed */ |
263 | if (bci->ichg_eoc >= 200000) | |
264 | cgain = true; | |
265 | if (bci->ichg_lo >= 400000) | |
266 | cgain = true; | |
267 | if (bci->ichg_hi >= 820000) | |
268 | cgain = true; | |
e4ae537e | 269 | if (cur > 852000) |
1098cb58 N |
270 | cgain = true; |
271 | ||
272 | status = twl4030_bci_read(TWL4030_BCICTL1, &bcictl1); | |
273 | if (status < 0) | |
274 | return status; | |
275 | if (twl_i2c_read_u8(TWL_MODULE_PM_MASTER, &boot_bci, | |
276 | TWL4030_PM_MASTER_BOOT_BCI) < 0) | |
277 | boot_bci = 0; | |
278 | boot_bci &= 7; | |
279 | ||
280 | if ((!!cgain) != !!(bcictl1 & TWL4030_CGAIN)) | |
281 | /* Need to turn for charging while we change the | |
282 | * CGAIN bit. Leave it off while everything is | |
283 | * updated. | |
284 | */ | |
285 | twl4030_clear_set_boot_bci(boot_bci, 0); | |
286 | ||
287 | /* | |
288 | * For ichg_eoc, the hardware only supports reg values matching | |
289 | * 100XXXX000, and requires the XXXX be stored in the high nibble | |
290 | * of TWL4030_BCIMFTH8. | |
291 | */ | |
292 | reg = ua2regval(bci->ichg_eoc, cgain); | |
293 | if (reg > 0x278) | |
294 | reg = 0x278; | |
295 | if (reg < 0x200) | |
296 | reg = 0x200; | |
297 | reg = (reg >> 3) & 0xf; | |
298 | fullreg = reg << 4; | |
299 | ||
300 | /* | |
301 | * For ichg_lo, reg value must match 10XXXX0000. | |
302 | * XXXX is stored in low nibble of TWL4030_BCIMFTH8. | |
303 | */ | |
304 | reg = ua2regval(bci->ichg_lo, cgain); | |
305 | if (reg > 0x2F0) | |
306 | reg = 0x2F0; | |
307 | if (reg < 0x200) | |
308 | reg = 0x200; | |
309 | reg = (reg >> 4) & 0xf; | |
310 | fullreg |= reg; | |
311 | ||
312 | /* ichg_eoc and ichg_lo live in same register */ | |
313 | status = twl4030_bci_read(TWL4030_BCIMFTH8, &oldreg); | |
314 | if (status < 0) | |
315 | return status; | |
316 | if (oldreg != fullreg) { | |
317 | status = twl_i2c_write_u8(TWL_MODULE_MAIN_CHARGE, 0xF4, | |
318 | TWL4030_BCIMFKEY); | |
319 | if (status < 0) | |
320 | return status; | |
321 | twl_i2c_write_u8(TWL_MODULE_MAIN_CHARGE, | |
322 | fullreg, TWL4030_BCIMFTH8); | |
323 | } | |
324 | ||
325 | /* ichg_hi threshold must be 1XXXX01100 (I think) */ | |
326 | reg = ua2regval(bci->ichg_hi, cgain); | |
327 | if (reg > 0x3E0) | |
328 | reg = 0x3E0; | |
329 | if (reg < 0x200) | |
330 | reg = 0x200; | |
331 | fullreg = (reg >> 5) & 0xF; | |
332 | fullreg <<= 4; | |
333 | status = twl4030_bci_read(TWL4030_BCIMFTH9, &oldreg); | |
334 | if (status < 0) | |
335 | return status; | |
336 | if ((oldreg & 0xF0) != fullreg) { | |
337 | fullreg |= (oldreg & 0x0F); | |
338 | status = twl_i2c_write_u8(TWL_MODULE_MAIN_CHARGE, 0xE7, | |
339 | TWL4030_BCIMFKEY); | |
340 | if (status < 0) | |
341 | return status; | |
342 | twl_i2c_write_u8(TWL_MODULE_MAIN_CHARGE, | |
343 | fullreg, TWL4030_BCIMFTH9); | |
344 | } | |
345 | ||
346 | /* | |
347 | * And finally, set the current. This is stored in | |
348 | * two registers. | |
349 | */ | |
e4ae537e | 350 | reg = ua2regval(cur, cgain); |
1098cb58 N |
351 | /* we have only 10 bits */ |
352 | if (reg > 0x3ff) | |
353 | reg = 0x3ff; | |
354 | status = twl4030_bci_read(TWL4030_BCIIREF1, &oldreg); | |
355 | if (status < 0) | |
356 | return status; | |
357 | cur_reg = oldreg; | |
358 | status = twl4030_bci_read(TWL4030_BCIIREF2, &oldreg); | |
359 | if (status < 0) | |
360 | return status; | |
361 | cur_reg |= oldreg << 8; | |
362 | if (reg != oldreg) { | |
363 | /* disable write protection for one write access for | |
364 | * BCIIREF */ | |
365 | status = twl_i2c_write_u8(TWL_MODULE_MAIN_CHARGE, 0xE7, | |
366 | TWL4030_BCIMFKEY); | |
367 | if (status < 0) | |
368 | return status; | |
369 | status = twl_i2c_write_u8(TWL_MODULE_MAIN_CHARGE, | |
370 | (reg & 0x100) ? 3 : 2, | |
371 | TWL4030_BCIIREF2); | |
372 | if (status < 0) | |
373 | return status; | |
374 | /* disable write protection for one write access for | |
375 | * BCIIREF */ | |
376 | status = twl_i2c_write_u8(TWL_MODULE_MAIN_CHARGE, 0xE7, | |
377 | TWL4030_BCIMFKEY); | |
378 | if (status < 0) | |
379 | return status; | |
380 | status = twl_i2c_write_u8(TWL_MODULE_MAIN_CHARGE, | |
381 | reg & 0xff, | |
382 | TWL4030_BCIIREF1); | |
383 | } | |
384 | if ((!!cgain) != !!(bcictl1 & TWL4030_CGAIN)) { | |
385 | /* Flip CGAIN and re-enable charging */ | |
386 | bcictl1 ^= TWL4030_CGAIN; | |
387 | twl_i2c_write_u8(TWL_MODULE_MAIN_CHARGE, | |
388 | bcictl1, TWL4030_BCICTL1); | |
389 | twl4030_clear_set_boot_bci(0, boot_bci); | |
390 | } | |
391 | return 0; | |
392 | } | |
393 | ||
2e727f17 | 394 | /* |
9c645d2f | 395 | * Enable/Disable USB Charge functionality. |
2e727f17 GI |
396 | */ |
397 | static int twl4030_charger_enable_usb(struct twl4030_bci *bci, bool enable) | |
398 | { | |
399 | int ret; | |
400 | ||
22d4c33f N |
401 | if (bci->usb_mode == CHARGE_OFF) |
402 | enable = false; | |
e57c4a67 | 403 | if (enable && !IS_ERR_OR_NULL(bci->transceiver)) { |
2e727f17 | 404 | |
e4ae537e N |
405 | twl4030_charger_update_current(bci); |
406 | ||
e57c4a67 | 407 | /* Need to keep phy powered */ |
ab37813f | 408 | if (!bci->usb_enabled) { |
e57c4a67 | 409 | pm_runtime_get_sync(bci->transceiver->dev); |
ab37813f N |
410 | bci->usb_enabled = 1; |
411 | } | |
412 | ||
7f4a633d N |
413 | if (bci->usb_mode == CHARGE_AUTO) |
414 | /* forcing the field BCIAUTOUSB (BOOT_BCI[1]) to 1 */ | |
415 | ret = twl4030_clear_set_boot_bci(0, TWL4030_BCIAUTOUSB); | |
2e727f17 GI |
416 | |
417 | /* forcing USBFASTMCHG(BCIMFSTS4[2]) to 1 */ | |
e9f14c18 | 418 | ret = twl4030_clear_set(TWL_MODULE_MAIN_CHARGE, 0, |
2e727f17 | 419 | TWL4030_USBFASTMCHG, TWL4030_BCIMFSTS4); |
7f4a633d N |
420 | if (bci->usb_mode == CHARGE_LINEAR) { |
421 | twl4030_clear_set_boot_bci(TWL4030_BCIAUTOAC|TWL4030_CVENAC, 0); | |
422 | /* Watch dog key: WOVF acknowledge */ | |
423 | ret = twl_i2c_write_u8(TWL_MODULE_MAIN_CHARGE, 0x33, | |
424 | TWL4030_BCIWDKEY); | |
425 | /* 0x24 + EKEY6: off mode */ | |
426 | ret = twl_i2c_write_u8(TWL_MODULE_MAIN_CHARGE, 0x2a, | |
427 | TWL4030_BCIMDKEY); | |
428 | /* EKEY2: Linear charge: USB path */ | |
429 | ret = twl_i2c_write_u8(TWL_MODULE_MAIN_CHARGE, 0x26, | |
430 | TWL4030_BCIMDKEY); | |
431 | /* WDKEY5: stop watchdog count */ | |
432 | ret = twl_i2c_write_u8(TWL_MODULE_MAIN_CHARGE, 0xf3, | |
433 | TWL4030_BCIWDKEY); | |
434 | /* enable MFEN3 access */ | |
435 | ret = twl_i2c_write_u8(TWL_MODULE_MAIN_CHARGE, 0x9c, | |
436 | TWL4030_BCIMFKEY); | |
437 | /* ICHGEOCEN - end-of-charge monitor (current < 80mA) | |
438 | * (charging continues) | |
439 | * ICHGLOWEN - current level monitor (charge continues) | |
440 | * don't monitor over-current or heat save | |
441 | */ | |
442 | ret = twl_i2c_write_u8(TWL_MODULE_MAIN_CHARGE, 0xf0, | |
443 | TWL4030_BCIMFEN3); | |
444 | } | |
2e727f17 GI |
445 | } else { |
446 | ret = twl4030_clear_set_boot_bci(TWL4030_BCIAUTOUSB, 0); | |
7f4a633d N |
447 | ret |= twl_i2c_write_u8(TWL_MODULE_MAIN_CHARGE, 0x2a, |
448 | TWL4030_BCIMDKEY); | |
ab37813f | 449 | if (bci->usb_enabled) { |
e57c4a67 N |
450 | pm_runtime_mark_last_busy(bci->transceiver->dev); |
451 | pm_runtime_put_autosuspend(bci->transceiver->dev); | |
ab37813f N |
452 | bci->usb_enabled = 0; |
453 | } | |
2e727f17 GI |
454 | } |
455 | ||
456 | return ret; | |
457 | } | |
458 | ||
459 | /* | |
460 | * Enable/Disable AC Charge funtionality. | |
461 | */ | |
b04b908d | 462 | static int twl4030_charger_enable_ac(struct twl4030_bci *bci, bool enable) |
2e727f17 GI |
463 | { |
464 | int ret; | |
465 | ||
b04b908d N |
466 | if (bci->ac_mode == CHARGE_OFF) |
467 | enable = false; | |
468 | ||
2e727f17 GI |
469 | if (enable) |
470 | ret = twl4030_clear_set_boot_bci(0, TWL4030_BCIAUTOAC); | |
471 | else | |
472 | ret = twl4030_clear_set_boot_bci(TWL4030_BCIAUTOAC, 0); | |
473 | ||
474 | return ret; | |
475 | } | |
476 | ||
210d4bc8 N |
477 | /* |
478 | * Enable/Disable charging of Backup Battery. | |
479 | */ | |
480 | static int twl4030_charger_enable_backup(int uvolt, int uamp) | |
481 | { | |
482 | int ret; | |
483 | u8 flags; | |
484 | ||
485 | if (uvolt < 2500000 || | |
486 | uamp < 25) { | |
487 | /* disable charging of backup battery */ | |
e9f14c18 | 488 | ret = twl4030_clear_set(TWL_MODULE_PM_RECEIVER, |
210d4bc8 N |
489 | TWL4030_BBCHEN, 0, TWL4030_BB_CFG); |
490 | return ret; | |
491 | } | |
492 | ||
493 | flags = TWL4030_BBCHEN; | |
494 | if (uvolt >= 3200000) | |
495 | flags |= TWL4030_BBSEL_3V2; | |
496 | else if (uvolt >= 3100000) | |
497 | flags |= TWL4030_BBSEL_3V1; | |
498 | else if (uvolt >= 3000000) | |
499 | flags |= TWL4030_BBSEL_3V0; | |
500 | else | |
501 | flags |= TWL4030_BBSEL_2V5; | |
502 | ||
503 | if (uamp >= 1000) | |
504 | flags |= TWL4030_BBISEL_1000uA; | |
505 | else if (uamp >= 500) | |
506 | flags |= TWL4030_BBISEL_500uA; | |
507 | else if (uamp >= 150) | |
508 | flags |= TWL4030_BBISEL_150uA; | |
509 | else | |
510 | flags |= TWL4030_BBISEL_25uA; | |
511 | ||
e9f14c18 | 512 | ret = twl4030_clear_set(TWL_MODULE_PM_RECEIVER, |
210d4bc8 N |
513 | TWL4030_BBSEL_MASK | TWL4030_BBISEL_MASK, |
514 | flags, | |
515 | TWL4030_BB_CFG); | |
516 | ||
517 | return ret; | |
518 | } | |
519 | ||
2e727f17 GI |
520 | /* |
521 | * TWL4030 CHG_PRES (AC charger presence) events | |
522 | */ | |
523 | static irqreturn_t twl4030_charger_interrupt(int irq, void *arg) | |
524 | { | |
525 | struct twl4030_bci *bci = arg; | |
526 | ||
527 | dev_dbg(bci->dev, "CHG_PRES irq\n"); | |
aca3c354 N |
528 | /* reset current on each 'plug' event */ |
529 | bci->ac_cur = 500000; | |
e4ae537e | 530 | twl4030_charger_update_current(bci); |
297d716f KK |
531 | power_supply_changed(bci->ac); |
532 | power_supply_changed(bci->usb); | |
2e727f17 GI |
533 | |
534 | return IRQ_HANDLED; | |
535 | } | |
536 | ||
537 | /* | |
538 | * TWL4030 BCI monitoring events | |
539 | */ | |
540 | static irqreturn_t twl4030_bci_interrupt(int irq, void *arg) | |
541 | { | |
542 | struct twl4030_bci *bci = arg; | |
543 | u8 irqs1, irqs2; | |
544 | int ret; | |
545 | ||
546 | ret = twl_i2c_read_u8(TWL4030_MODULE_INTERRUPTS, &irqs1, | |
547 | TWL4030_INTERRUPTS_BCIISR1A); | |
548 | if (ret < 0) | |
549 | return IRQ_HANDLED; | |
550 | ||
551 | ret = twl_i2c_read_u8(TWL4030_MODULE_INTERRUPTS, &irqs2, | |
552 | TWL4030_INTERRUPTS_BCIISR2A); | |
553 | if (ret < 0) | |
554 | return IRQ_HANDLED; | |
555 | ||
556 | dev_dbg(bci->dev, "BCI irq %02x %02x\n", irqs2, irqs1); | |
557 | ||
558 | if (irqs1 & (TWL4030_ICHGLOW | TWL4030_ICHGEOC)) { | |
559 | /* charger state change, inform the core */ | |
297d716f KK |
560 | power_supply_changed(bci->ac); |
561 | power_supply_changed(bci->usb); | |
2e727f17 | 562 | } |
e4ae537e | 563 | twl4030_charger_update_current(bci); |
2e727f17 GI |
564 | |
565 | /* various monitoring events, for now we just log them here */ | |
566 | if (irqs1 & (TWL4030_TBATOR2 | TWL4030_TBATOR1)) | |
567 | dev_warn(bci->dev, "battery temperature out of range\n"); | |
568 | ||
569 | if (irqs1 & TWL4030_BATSTS) | |
570 | dev_crit(bci->dev, "battery disconnected\n"); | |
571 | ||
572 | if (irqs2 & TWL4030_VBATOV) | |
573 | dev_crit(bci->dev, "VBAT overvoltage\n"); | |
574 | ||
575 | if (irqs2 & TWL4030_VBUSOV) | |
576 | dev_crit(bci->dev, "VBUS overvoltage\n"); | |
577 | ||
578 | if (irqs2 & TWL4030_ACCHGOV) | |
579 | dev_crit(bci->dev, "Ac charger overvoltage\n"); | |
580 | ||
581 | return IRQ_HANDLED; | |
582 | } | |
583 | ||
aca3c354 N |
584 | /* |
585 | * Provide "max_current" attribute in sysfs. | |
586 | */ | |
587 | static ssize_t | |
588 | twl4030_bci_max_current_store(struct device *dev, struct device_attribute *attr, | |
589 | const char *buf, size_t n) | |
590 | { | |
591 | struct twl4030_bci *bci = dev_get_drvdata(dev->parent); | |
592 | int cur = 0; | |
593 | int status = 0; | |
594 | status = kstrtoint(buf, 10, &cur); | |
595 | if (status) | |
596 | return status; | |
597 | if (cur < 0) | |
598 | return -EINVAL; | |
599 | if (dev == &bci->ac->dev) | |
600 | bci->ac_cur = cur; | |
601 | else | |
602 | bci->usb_cur = cur; | |
603 | ||
604 | twl4030_charger_update_current(bci); | |
605 | return n; | |
606 | } | |
607 | ||
608 | /* | |
609 | * sysfs max_current show | |
610 | */ | |
611 | static ssize_t twl4030_bci_max_current_show(struct device *dev, | |
612 | struct device_attribute *attr, char *buf) | |
613 | { | |
614 | int status = 0; | |
615 | int cur = -1; | |
616 | u8 bcictl1; | |
617 | struct twl4030_bci *bci = dev_get_drvdata(dev->parent); | |
618 | ||
619 | if (dev == &bci->ac->dev) { | |
620 | if (!bci->ac_is_active) | |
621 | cur = bci->ac_cur; | |
622 | } else { | |
623 | if (bci->ac_is_active) | |
624 | cur = bci->usb_cur; | |
625 | } | |
626 | if (cur < 0) { | |
627 | cur = twl4030bci_read_adc_val(TWL4030_BCIIREF1); | |
628 | if (cur < 0) | |
629 | return cur; | |
630 | status = twl4030_bci_read(TWL4030_BCICTL1, &bcictl1); | |
631 | if (status < 0) | |
632 | return status; | |
633 | cur = regval2ua(cur, bcictl1 & TWL4030_CGAIN); | |
634 | } | |
635 | return scnprintf(buf, PAGE_SIZE, "%u\n", cur); | |
636 | } | |
637 | ||
638 | static DEVICE_ATTR(max_current, 0644, twl4030_bci_max_current_show, | |
639 | twl4030_bci_max_current_store); | |
640 | ||
d6ccc442 | 641 | static void twl4030_bci_usb_work(struct work_struct *data) |
2e727f17 | 642 | { |
d6ccc442 | 643 | struct twl4030_bci *bci = container_of(data, struct twl4030_bci, work); |
2e727f17 | 644 | |
d6ccc442 | 645 | switch (bci->event) { |
2e727f17 GI |
646 | case USB_EVENT_VBUS: |
647 | case USB_EVENT_CHARGER: | |
648 | twl4030_charger_enable_usb(bci, true); | |
649 | break; | |
650 | case USB_EVENT_NONE: | |
651 | twl4030_charger_enable_usb(bci, false); | |
652 | break; | |
653 | } | |
d6ccc442 HK |
654 | } |
655 | ||
656 | static int twl4030_bci_usb_ncb(struct notifier_block *nb, unsigned long val, | |
657 | void *priv) | |
658 | { | |
fcc8ebc9 | 659 | struct twl4030_bci *bci = container_of(nb, struct twl4030_bci, usb_nb); |
d6ccc442 HK |
660 | |
661 | dev_dbg(bci->dev, "OTG notify %lu\n", val); | |
662 | ||
aca3c354 N |
663 | /* reset current on each 'plug' event */ |
664 | if (allow_usb) | |
665 | bci->usb_cur = 500000; | |
666 | else | |
667 | bci->usb_cur = 100000; | |
668 | ||
d6ccc442 HK |
669 | bci->event = val; |
670 | schedule_work(&bci->work); | |
2e727f17 GI |
671 | |
672 | return NOTIFY_OK; | |
673 | } | |
674 | ||
22d4c33f N |
675 | /* |
676 | * sysfs charger enabled store | |
677 | */ | |
678 | static ssize_t | |
679 | twl4030_bci_mode_store(struct device *dev, struct device_attribute *attr, | |
680 | const char *buf, size_t n) | |
681 | { | |
682 | struct twl4030_bci *bci = dev_get_drvdata(dev->parent); | |
683 | int mode; | |
684 | int status; | |
685 | ||
686 | if (sysfs_streq(buf, modes[0])) | |
687 | mode = 0; | |
688 | else if (sysfs_streq(buf, modes[1])) | |
689 | mode = 1; | |
7f4a633d N |
690 | else if (sysfs_streq(buf, modes[2])) |
691 | mode = 2; | |
22d4c33f N |
692 | else |
693 | return -EINVAL; | |
b04b908d N |
694 | if (dev == &bci->ac->dev) { |
695 | if (mode == 2) | |
696 | return -EINVAL; | |
697 | twl4030_charger_enable_ac(bci, false); | |
698 | bci->ac_mode = mode; | |
699 | status = twl4030_charger_enable_ac(bci, true); | |
700 | } else { | |
701 | twl4030_charger_enable_usb(bci, false); | |
702 | bci->usb_mode = mode; | |
703 | status = twl4030_charger_enable_usb(bci, true); | |
704 | } | |
22d4c33f N |
705 | return (status == 0) ? n : status; |
706 | } | |
707 | ||
708 | /* | |
709 | * sysfs charger enabled show | |
710 | */ | |
711 | static ssize_t | |
712 | twl4030_bci_mode_show(struct device *dev, | |
713 | struct device_attribute *attr, char *buf) | |
714 | { | |
715 | struct twl4030_bci *bci = dev_get_drvdata(dev->parent); | |
716 | int len = 0; | |
717 | int i; | |
b04b908d N |
718 | int mode = bci->usb_mode; |
719 | ||
720 | if (dev == &bci->ac->dev) | |
721 | mode = bci->ac_mode; | |
22d4c33f N |
722 | |
723 | for (i = 0; i < ARRAY_SIZE(modes); i++) | |
b04b908d | 724 | if (mode == i) |
22d4c33f N |
725 | len += snprintf(buf+len, PAGE_SIZE-len, |
726 | "[%s] ", modes[i]); | |
727 | else | |
728 | len += snprintf(buf+len, PAGE_SIZE-len, | |
729 | "%s ", modes[i]); | |
730 | buf[len-1] = '\n'; | |
731 | return len; | |
732 | } | |
733 | static DEVICE_ATTR(mode, 0644, twl4030_bci_mode_show, | |
734 | twl4030_bci_mode_store); | |
735 | ||
2e727f17 GI |
736 | static int twl4030_charger_get_current(void) |
737 | { | |
738 | int curr; | |
739 | int ret; | |
740 | u8 bcictl1; | |
741 | ||
742 | curr = twl4030bci_read_adc_val(TWL4030_BCIICHG); | |
743 | if (curr < 0) | |
744 | return curr; | |
745 | ||
746 | ret = twl4030_bci_read(TWL4030_BCICTL1, &bcictl1); | |
747 | if (ret) | |
748 | return ret; | |
749 | ||
3b542f08 | 750 | return regval2ua(curr, bcictl1 & TWL4030_CGAIN); |
2e727f17 GI |
751 | } |
752 | ||
753 | /* | |
754 | * Returns the main charge FSM state | |
755 | * Or < 0 on failure. | |
756 | */ | |
757 | static int twl4030bci_state(struct twl4030_bci *bci) | |
758 | { | |
759 | int ret; | |
760 | u8 state; | |
761 | ||
762 | ret = twl4030_bci_read(TWL4030_BCIMSTATEC, &state); | |
763 | if (ret) { | |
764 | pr_err("twl4030_bci: error reading BCIMSTATEC\n"); | |
765 | return ret; | |
766 | } | |
767 | ||
768 | dev_dbg(bci->dev, "state: %02x\n", state); | |
769 | ||
770 | return state; | |
771 | } | |
772 | ||
773 | static int twl4030_bci_state_to_status(int state) | |
774 | { | |
775 | state &= TWL4030_MSTATEC_MASK; | |
776 | if (TWL4030_MSTATEC_QUICK1 <= state && state <= TWL4030_MSTATEC_QUICK7) | |
777 | return POWER_SUPPLY_STATUS_CHARGING; | |
778 | else if (TWL4030_MSTATEC_COMPLETE1 <= state && | |
779 | state <= TWL4030_MSTATEC_COMPLETE4) | |
780 | return POWER_SUPPLY_STATUS_FULL; | |
781 | else | |
782 | return POWER_SUPPLY_STATUS_NOT_CHARGING; | |
783 | } | |
784 | ||
785 | static int twl4030_bci_get_property(struct power_supply *psy, | |
786 | enum power_supply_property psp, | |
787 | union power_supply_propval *val) | |
788 | { | |
297d716f | 789 | struct twl4030_bci *bci = dev_get_drvdata(psy->dev.parent); |
2e727f17 GI |
790 | int is_charging; |
791 | int state; | |
792 | int ret; | |
793 | ||
794 | state = twl4030bci_state(bci); | |
795 | if (state < 0) | |
796 | return state; | |
797 | ||
297d716f | 798 | if (psy->desc->type == POWER_SUPPLY_TYPE_USB) |
2e727f17 GI |
799 | is_charging = state & TWL4030_MSTATEC_USB; |
800 | else | |
801 | is_charging = state & TWL4030_MSTATEC_AC; | |
7f4a633d N |
802 | if (!is_charging) { |
803 | u8 s; | |
804 | twl4030_bci_read(TWL4030_BCIMDEN, &s); | |
805 | if (psy->desc->type == POWER_SUPPLY_TYPE_USB) | |
806 | is_charging = s & 1; | |
807 | else | |
808 | is_charging = s & 2; | |
809 | if (is_charging) | |
810 | /* A little white lie */ | |
811 | state = TWL4030_MSTATEC_QUICK1; | |
812 | } | |
2e727f17 GI |
813 | |
814 | switch (psp) { | |
815 | case POWER_SUPPLY_PROP_STATUS: | |
816 | if (is_charging) | |
817 | val->intval = twl4030_bci_state_to_status(state); | |
818 | else | |
819 | val->intval = POWER_SUPPLY_STATUS_NOT_CHARGING; | |
820 | break; | |
821 | case POWER_SUPPLY_PROP_VOLTAGE_NOW: | |
822 | /* charging must be active for meaningful result */ | |
823 | if (!is_charging) | |
824 | return -ENODATA; | |
297d716f | 825 | if (psy->desc->type == POWER_SUPPLY_TYPE_USB) { |
2e727f17 GI |
826 | ret = twl4030bci_read_adc_val(TWL4030_BCIVBUS); |
827 | if (ret < 0) | |
828 | return ret; | |
829 | /* BCIVBUS uses ADCIN8, 7/1023 V/step */ | |
830 | val->intval = ret * 6843; | |
831 | } else { | |
832 | ret = twl4030bci_read_adc_val(TWL4030_BCIVAC); | |
833 | if (ret < 0) | |
834 | return ret; | |
835 | /* BCIVAC uses ADCIN11, 10/1023 V/step */ | |
836 | val->intval = ret * 9775; | |
837 | } | |
838 | break; | |
839 | case POWER_SUPPLY_PROP_CURRENT_NOW: | |
840 | if (!is_charging) | |
841 | return -ENODATA; | |
842 | /* current measurement is shared between AC and USB */ | |
843 | ret = twl4030_charger_get_current(); | |
844 | if (ret < 0) | |
845 | return ret; | |
846 | val->intval = ret; | |
847 | break; | |
848 | case POWER_SUPPLY_PROP_ONLINE: | |
849 | val->intval = is_charging && | |
850 | twl4030_bci_state_to_status(state) != | |
851 | POWER_SUPPLY_STATUS_NOT_CHARGING; | |
852 | break; | |
853 | default: | |
854 | return -EINVAL; | |
855 | } | |
856 | ||
857 | return 0; | |
858 | } | |
859 | ||
860 | static enum power_supply_property twl4030_charger_props[] = { | |
861 | POWER_SUPPLY_PROP_STATUS, | |
862 | POWER_SUPPLY_PROP_ONLINE, | |
863 | POWER_SUPPLY_PROP_VOLTAGE_NOW, | |
864 | POWER_SUPPLY_PROP_CURRENT_NOW, | |
865 | }; | |
866 | ||
ec0b3802 N |
867 | #ifdef CONFIG_OF |
868 | static const struct twl4030_bci_platform_data * | |
869 | twl4030_bci_parse_dt(struct device *dev) | |
870 | { | |
871 | struct device_node *np = dev->of_node; | |
872 | struct twl4030_bci_platform_data *pdata; | |
873 | u32 num; | |
874 | ||
875 | if (!np) | |
876 | return NULL; | |
877 | pdata = devm_kzalloc(dev, sizeof(*pdata), GFP_KERNEL); | |
878 | if (!pdata) | |
879 | return pdata; | |
880 | ||
881 | if (of_property_read_u32(np, "ti,bb-uvolt", &num) == 0) | |
882 | pdata->bb_uvolt = num; | |
883 | if (of_property_read_u32(np, "ti,bb-uamp", &num) == 0) | |
884 | pdata->bb_uamp = num; | |
885 | return pdata; | |
886 | } | |
887 | #else | |
888 | static inline const struct twl4030_bci_platform_data * | |
889 | twl4030_bci_parse_dt(struct device *dev) | |
890 | { | |
891 | return NULL; | |
892 | } | |
893 | #endif | |
894 | ||
297d716f KK |
895 | static const struct power_supply_desc twl4030_bci_ac_desc = { |
896 | .name = "twl4030_ac", | |
897 | .type = POWER_SUPPLY_TYPE_MAINS, | |
898 | .properties = twl4030_charger_props, | |
899 | .num_properties = ARRAY_SIZE(twl4030_charger_props), | |
900 | .get_property = twl4030_bci_get_property, | |
901 | }; | |
902 | ||
903 | static const struct power_supply_desc twl4030_bci_usb_desc = { | |
904 | .name = "twl4030_usb", | |
905 | .type = POWER_SUPPLY_TYPE_USB, | |
906 | .properties = twl4030_charger_props, | |
907 | .num_properties = ARRAY_SIZE(twl4030_charger_props), | |
908 | .get_property = twl4030_bci_get_property, | |
909 | }; | |
910 | ||
7396f708 | 911 | static int twl4030_bci_probe(struct platform_device *pdev) |
2e727f17 GI |
912 | { |
913 | struct twl4030_bci *bci; | |
ec0b3802 | 914 | const struct twl4030_bci_platform_data *pdata = pdev->dev.platform_data; |
2e727f17 | 915 | int ret; |
28d48f04 | 916 | u32 reg; |
2e727f17 | 917 | |
325b50aa | 918 | bci = devm_kzalloc(&pdev->dev, sizeof(*bci), GFP_KERNEL); |
2e727f17 GI |
919 | if (bci == NULL) |
920 | return -ENOMEM; | |
921 | ||
ec0b3802 N |
922 | if (!pdata) |
923 | pdata = twl4030_bci_parse_dt(&pdev->dev); | |
924 | ||
1098cb58 N |
925 | bci->ichg_eoc = 80100; /* Stop charging when current drops to here */ |
926 | bci->ichg_lo = 241000; /* Low threshold */ | |
927 | bci->ichg_hi = 500000; /* High threshold */ | |
e4ae537e | 928 | bci->ac_cur = 500000; /* 500mA */ |
1098cb58 | 929 | if (allow_usb) |
e4ae537e | 930 | bci->usb_cur = 500000; /* 500mA */ |
1098cb58 | 931 | else |
e4ae537e | 932 | bci->usb_cur = 100000; /* 100mA */ |
22d4c33f | 933 | bci->usb_mode = CHARGE_AUTO; |
b04b908d | 934 | bci->ac_mode = CHARGE_AUTO; |
1098cb58 | 935 | |
2e727f17 GI |
936 | bci->dev = &pdev->dev; |
937 | bci->irq_chg = platform_get_irq(pdev, 0); | |
938 | bci->irq_bci = platform_get_irq(pdev, 1); | |
939 | ||
61a7784e NM |
940 | /* Only proceed further *IF* battery is physically present */ |
941 | ret = twl4030_is_battery_present(bci); | |
942 | if (ret) { | |
943 | dev_crit(&pdev->dev, "Battery was not detected:%d\n", ret); | |
325b50aa | 944 | return ret; |
61a7784e | 945 | } |
2e727f17 | 946 | |
61a7784e | 947 | platform_set_drvdata(pdev, bci); |
2e727f17 | 948 | |
325b50aa N |
949 | bci->ac = devm_power_supply_register(&pdev->dev, &twl4030_bci_ac_desc, |
950 | NULL); | |
297d716f KK |
951 | if (IS_ERR(bci->ac)) { |
952 | ret = PTR_ERR(bci->ac); | |
2e727f17 | 953 | dev_err(&pdev->dev, "failed to register ac: %d\n", ret); |
325b50aa | 954 | return ret; |
2e727f17 GI |
955 | } |
956 | ||
325b50aa N |
957 | bci->usb = devm_power_supply_register(&pdev->dev, &twl4030_bci_usb_desc, |
958 | NULL); | |
297d716f KK |
959 | if (IS_ERR(bci->usb)) { |
960 | ret = PTR_ERR(bci->usb); | |
2e727f17 | 961 | dev_err(&pdev->dev, "failed to register usb: %d\n", ret); |
325b50aa | 962 | return ret; |
2e727f17 GI |
963 | } |
964 | ||
1b7cac23 | 965 | ret = devm_request_threaded_irq(&pdev->dev, bci->irq_chg, NULL, |
a2778b0f FW |
966 | twl4030_charger_interrupt, IRQF_ONESHOT, pdev->name, |
967 | bci); | |
2e727f17 GI |
968 | if (ret < 0) { |
969 | dev_err(&pdev->dev, "could not request irq %d, status %d\n", | |
970 | bci->irq_chg, ret); | |
325b50aa | 971 | return ret; |
2e727f17 GI |
972 | } |
973 | ||
1b7cac23 | 974 | ret = devm_request_threaded_irq(&pdev->dev, bci->irq_bci, NULL, |
a2778b0f | 975 | twl4030_bci_interrupt, IRQF_ONESHOT, pdev->name, bci); |
2e727f17 GI |
976 | if (ret < 0) { |
977 | dev_err(&pdev->dev, "could not request irq %d, status %d\n", | |
978 | bci->irq_bci, ret); | |
325b50aa | 979 | return ret; |
2e727f17 GI |
980 | } |
981 | ||
d6ccc442 HK |
982 | INIT_WORK(&bci->work, twl4030_bci_usb_work); |
983 | ||
f5e4edb8 N |
984 | bci->usb_nb.notifier_call = twl4030_bci_usb_ncb; |
985 | if (bci->dev->of_node) { | |
986 | struct device_node *phynode; | |
987 | ||
988 | phynode = of_find_compatible_node(bci->dev->of_node->parent, | |
989 | NULL, "ti,twl4030-usb"); | |
3fc3895e | 990 | if (phynode) { |
f5e4edb8 N |
991 | bci->transceiver = devm_usb_get_phy_by_node( |
992 | bci->dev, phynode, &bci->usb_nb); | |
3fc3895e N |
993 | if (IS_ERR(bci->transceiver) && |
994 | PTR_ERR(bci->transceiver) == -EPROBE_DEFER) | |
995 | return -EPROBE_DEFER; | |
996 | } | |
2e727f17 GI |
997 | } |
998 | ||
999 | /* Enable interrupts now. */ | |
28d48f04 | 1000 | reg = ~(u32)(TWL4030_ICHGLOW | TWL4030_ICHGEOC | TWL4030_TBATOR2 | |
2e727f17 GI |
1001 | TWL4030_TBATOR1 | TWL4030_BATSTS); |
1002 | ret = twl_i2c_write_u8(TWL4030_MODULE_INTERRUPTS, reg, | |
1003 | TWL4030_INTERRUPTS_BCIIMR1A); | |
1004 | if (ret < 0) { | |
1005 | dev_err(&pdev->dev, "failed to unmask interrupts: %d\n", ret); | |
325b50aa | 1006 | return ret; |
2e727f17 GI |
1007 | } |
1008 | ||
28d48f04 | 1009 | reg = ~(u32)(TWL4030_VBATOV | TWL4030_VBUSOV | TWL4030_ACCHGOV); |
2e727f17 GI |
1010 | ret = twl_i2c_write_u8(TWL4030_MODULE_INTERRUPTS, reg, |
1011 | TWL4030_INTERRUPTS_BCIIMR2A); | |
1012 | if (ret < 0) | |
1013 | dev_warn(&pdev->dev, "failed to unmask interrupts: %d\n", ret); | |
1014 | ||
1098cb58 | 1015 | twl4030_charger_update_current(bci); |
aca3c354 N |
1016 | if (device_create_file(&bci->usb->dev, &dev_attr_max_current)) |
1017 | dev_warn(&pdev->dev, "could not create sysfs file\n"); | |
22d4c33f N |
1018 | if (device_create_file(&bci->usb->dev, &dev_attr_mode)) |
1019 | dev_warn(&pdev->dev, "could not create sysfs file\n"); | |
b04b908d N |
1020 | if (device_create_file(&bci->ac->dev, &dev_attr_mode)) |
1021 | dev_warn(&pdev->dev, "could not create sysfs file\n"); | |
aca3c354 N |
1022 | if (device_create_file(&bci->ac->dev, &dev_attr_max_current)) |
1023 | dev_warn(&pdev->dev, "could not create sysfs file\n"); | |
1024 | ||
b04b908d | 1025 | twl4030_charger_enable_ac(bci, true); |
6e37ec8c N |
1026 | if (!IS_ERR_OR_NULL(bci->transceiver)) |
1027 | twl4030_bci_usb_ncb(&bci->usb_nb, | |
1028 | bci->transceiver->last_event, | |
1029 | NULL); | |
1030 | else | |
1031 | twl4030_charger_enable_usb(bci, false); | |
ec0b3802 N |
1032 | if (pdata) |
1033 | twl4030_charger_enable_backup(pdata->bb_uvolt, | |
1034 | pdata->bb_uamp); | |
1035 | else | |
1036 | twl4030_charger_enable_backup(0, 0); | |
2e727f17 GI |
1037 | |
1038 | return 0; | |
2e727f17 GI |
1039 | } |
1040 | ||
1041 | static int __exit twl4030_bci_remove(struct platform_device *pdev) | |
1042 | { | |
1043 | struct twl4030_bci *bci = platform_get_drvdata(pdev); | |
1044 | ||
b04b908d | 1045 | twl4030_charger_enable_ac(bci, false); |
2e727f17 | 1046 | twl4030_charger_enable_usb(bci, false); |
210d4bc8 | 1047 | twl4030_charger_enable_backup(0, 0); |
2e727f17 | 1048 | |
aca3c354 | 1049 | device_remove_file(&bci->usb->dev, &dev_attr_max_current); |
22d4c33f | 1050 | device_remove_file(&bci->usb->dev, &dev_attr_mode); |
aca3c354 | 1051 | device_remove_file(&bci->ac->dev, &dev_attr_max_current); |
b04b908d | 1052 | device_remove_file(&bci->ac->dev, &dev_attr_mode); |
2e727f17 GI |
1053 | /* mask interrupts */ |
1054 | twl_i2c_write_u8(TWL4030_MODULE_INTERRUPTS, 0xff, | |
1055 | TWL4030_INTERRUPTS_BCIIMR1A); | |
1056 | twl_i2c_write_u8(TWL4030_MODULE_INTERRUPTS, 0xff, | |
1057 | TWL4030_INTERRUPTS_BCIIMR2A); | |
1058 | ||
2e727f17 GI |
1059 | return 0; |
1060 | } | |
1061 | ||
ec0b3802 N |
1062 | static const struct of_device_id twl_bci_of_match[] = { |
1063 | {.compatible = "ti,twl4030-bci", }, | |
1064 | { } | |
1065 | }; | |
1066 | MODULE_DEVICE_TABLE(of, twl_bci_of_match); | |
1067 | ||
2e727f17 | 1068 | static struct platform_driver twl4030_bci_driver = { |
7396f708 | 1069 | .probe = twl4030_bci_probe, |
2e727f17 GI |
1070 | .driver = { |
1071 | .name = "twl4030_bci", | |
ec0b3802 | 1072 | .of_match_table = of_match_ptr(twl_bci_of_match), |
2e727f17 GI |
1073 | }, |
1074 | .remove = __exit_p(twl4030_bci_remove), | |
1075 | }; | |
7396f708 | 1076 | module_platform_driver(twl4030_bci_driver); |
2e727f17 | 1077 | |
28d48f04 | 1078 | MODULE_AUTHOR("Gražvydas Ignotas"); |
2e727f17 GI |
1079 | MODULE_DESCRIPTION("TWL4030 Battery Charger Interface driver"); |
1080 | MODULE_LICENSE("GPL"); | |
1081 | MODULE_ALIAS("platform:twl4030_bci"); |