Commit | Line | Data |
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84edbeea AM |
1 | /* |
2 | * Copyright (C) ST-Ericsson SA 2012 | |
3 | * | |
4 | * Charger driver for AB8500 | |
5 | * | |
6 | * License Terms: GNU General Public License v2 | |
7 | * Author: | |
8 | * Johan Palsson <johan.palsson@stericsson.com> | |
9 | * Karl Komierowski <karl.komierowski@stericsson.com> | |
10 | * Arun R Murthy <arun.murthy@stericsson.com> | |
11 | */ | |
12 | ||
13 | #include <linux/init.h> | |
14 | #include <linux/module.h> | |
15 | #include <linux/device.h> | |
16 | #include <linux/interrupt.h> | |
17 | #include <linux/delay.h> | |
18 | #include <linux/slab.h> | |
19 | #include <linux/platform_device.h> | |
20 | #include <linux/power_supply.h> | |
21 | #include <linux/completion.h> | |
22 | #include <linux/regulator/consumer.h> | |
23 | #include <linux/err.h> | |
24 | #include <linux/workqueue.h> | |
25 | #include <linux/kobject.h> | |
4aef72db R |
26 | #include <linux/of.h> |
27 | #include <linux/mfd/core.h> | |
84edbeea AM |
28 | #include <linux/mfd/abx500/ab8500.h> |
29 | #include <linux/mfd/abx500.h> | |
30 | #include <linux/mfd/abx500/ab8500-bm.h> | |
31 | #include <linux/mfd/abx500/ab8500-gpadc.h> | |
32 | #include <linux/mfd/abx500/ux500_chargalg.h> | |
33 | #include <linux/usb/otg.h> | |
b269fff4 | 34 | #include <linux/mutex.h> |
84edbeea AM |
35 | |
36 | /* Charger constants */ | |
37 | #define NO_PW_CONN 0 | |
38 | #define AC_PW_CONN 1 | |
39 | #define USB_PW_CONN 2 | |
40 | ||
41 | #define MAIN_WDOG_ENA 0x01 | |
42 | #define MAIN_WDOG_KICK 0x02 | |
43 | #define MAIN_WDOG_DIS 0x00 | |
44 | #define CHARG_WD_KICK 0x01 | |
45 | #define MAIN_CH_ENA 0x01 | |
46 | #define MAIN_CH_NO_OVERSHOOT_ENA_N 0x02 | |
47 | #define USB_CH_ENA 0x01 | |
48 | #define USB_CHG_NO_OVERSHOOT_ENA_N 0x02 | |
49 | #define MAIN_CH_DET 0x01 | |
50 | #define MAIN_CH_CV_ON 0x04 | |
51 | #define USB_CH_CV_ON 0x08 | |
52 | #define VBUS_DET_DBNC100 0x02 | |
53 | #define VBUS_DET_DBNC1 0x01 | |
54 | #define OTP_ENABLE_WD 0x01 | |
4dcdf577 | 55 | #define DROP_COUNT_RESET 0x01 |
84edbeea AM |
56 | |
57 | #define MAIN_CH_INPUT_CURR_SHIFT 4 | |
58 | #define VBUS_IN_CURR_LIM_SHIFT 4 | |
34c11a70 | 59 | #define AUTO_VBUS_IN_CURR_LIM_SHIFT 4 |
84edbeea AM |
60 | |
61 | #define LED_INDICATOR_PWM_ENA 0x01 | |
62 | #define LED_INDICATOR_PWM_DIS 0x00 | |
63 | #define LED_IND_CUR_5MA 0x04 | |
64 | #define LED_INDICATOR_PWM_DUTY_252_256 0xBF | |
65 | ||
66 | /* HW failure constants */ | |
67 | #define MAIN_CH_TH_PROT 0x02 | |
68 | #define VBUS_CH_NOK 0x08 | |
69 | #define USB_CH_TH_PROT 0x02 | |
70 | #define VBUS_OVV_TH 0x01 | |
71 | #define MAIN_CH_NOK 0x01 | |
72 | #define VBUS_DET 0x80 | |
73 | ||
b269fff4 LJ |
74 | #define MAIN_CH_STATUS2_MAINCHGDROP 0x80 |
75 | #define MAIN_CH_STATUS2_MAINCHARGERDETDBNC 0x40 | |
76 | #define USB_CH_VBUSDROP 0x40 | |
77 | #define USB_CH_VBUSDETDBNC 0x01 | |
78 | ||
84edbeea AM |
79 | /* UsbLineStatus register bit masks */ |
80 | #define AB8500_USB_LINK_STATUS 0x78 | |
81 | #define AB8500_STD_HOST_SUSP 0x18 | |
82 | ||
83 | /* Watchdog timeout constant */ | |
84 | #define WD_TIMER 0x30 /* 4min */ | |
85 | #define WD_KICK_INTERVAL (60 * HZ) | |
86 | ||
87 | /* Lowest charger voltage is 3.39V -> 0x4E */ | |
88 | #define LOW_VOLT_REG 0x4E | |
89 | ||
f8e96dff JB |
90 | /* Step up/down delay in us */ |
91 | #define STEP_UDELAY 1000 | |
92 | ||
b269fff4 LJ |
93 | #define CHARGER_STATUS_POLL 10 /* in ms */ |
94 | ||
e07a5645 LP |
95 | #define CHG_WD_INTERVAL (60 * HZ) |
96 | ||
b0163222 | 97 | #define AB8500_SW_CONTROL_FALLBACK 0x03 |
34c11a70 POH |
98 | /* Wait for enumeration before charing in us */ |
99 | #define WAIT_ACA_RID_ENUMERATION (5 * 1000) | |
b0163222 | 100 | |
84edbeea AM |
101 | /* UsbLineStatus register - usb types */ |
102 | enum ab8500_charger_link_status { | |
103 | USB_STAT_NOT_CONFIGURED, | |
104 | USB_STAT_STD_HOST_NC, | |
105 | USB_STAT_STD_HOST_C_NS, | |
106 | USB_STAT_STD_HOST_C_S, | |
107 | USB_STAT_HOST_CHG_NM, | |
108 | USB_STAT_HOST_CHG_HS, | |
109 | USB_STAT_HOST_CHG_HS_CHIRP, | |
110 | USB_STAT_DEDICATED_CHG, | |
111 | USB_STAT_ACA_RID_A, | |
112 | USB_STAT_ACA_RID_B, | |
113 | USB_STAT_ACA_RID_C_NM, | |
114 | USB_STAT_ACA_RID_C_HS, | |
115 | USB_STAT_ACA_RID_C_HS_CHIRP, | |
116 | USB_STAT_HM_IDGND, | |
117 | USB_STAT_RESERVED, | |
118 | USB_STAT_NOT_VALID_LINK, | |
74a8e349 HB |
119 | USB_STAT_PHY_EN, |
120 | USB_STAT_SUP_NO_IDGND_VBUS, | |
121 | USB_STAT_SUP_IDGND_VBUS, | |
122 | USB_STAT_CHARGER_LINE_1, | |
123 | USB_STAT_CARKIT_1, | |
124 | USB_STAT_CARKIT_2, | |
125 | USB_STAT_ACA_DOCK_CHARGER, | |
84edbeea AM |
126 | }; |
127 | ||
128 | enum ab8500_usb_state { | |
129 | AB8500_BM_USB_STATE_RESET_HS, /* HighSpeed Reset */ | |
130 | AB8500_BM_USB_STATE_RESET_FS, /* FullSpeed/LowSpeed Reset */ | |
131 | AB8500_BM_USB_STATE_CONFIGURED, | |
132 | AB8500_BM_USB_STATE_SUSPEND, | |
133 | AB8500_BM_USB_STATE_RESUME, | |
134 | AB8500_BM_USB_STATE_MAX, | |
135 | }; | |
136 | ||
137 | /* VBUS input current limits supported in AB8500 in mA */ | |
138 | #define USB_CH_IP_CUR_LVL_0P05 50 | |
139 | #define USB_CH_IP_CUR_LVL_0P09 98 | |
140 | #define USB_CH_IP_CUR_LVL_0P19 193 | |
141 | #define USB_CH_IP_CUR_LVL_0P29 290 | |
142 | #define USB_CH_IP_CUR_LVL_0P38 380 | |
143 | #define USB_CH_IP_CUR_LVL_0P45 450 | |
144 | #define USB_CH_IP_CUR_LVL_0P5 500 | |
145 | #define USB_CH_IP_CUR_LVL_0P6 600 | |
146 | #define USB_CH_IP_CUR_LVL_0P7 700 | |
147 | #define USB_CH_IP_CUR_LVL_0P8 800 | |
148 | #define USB_CH_IP_CUR_LVL_0P9 900 | |
149 | #define USB_CH_IP_CUR_LVL_1P0 1000 | |
150 | #define USB_CH_IP_CUR_LVL_1P1 1100 | |
151 | #define USB_CH_IP_CUR_LVL_1P3 1300 | |
152 | #define USB_CH_IP_CUR_LVL_1P4 1400 | |
153 | #define USB_CH_IP_CUR_LVL_1P5 1500 | |
154 | ||
155 | #define VBAT_TRESH_IP_CUR_RED 3800 | |
156 | ||
157 | #define to_ab8500_charger_usb_device_info(x) container_of((x), \ | |
158 | struct ab8500_charger, usb_chg) | |
159 | #define to_ab8500_charger_ac_device_info(x) container_of((x), \ | |
160 | struct ab8500_charger, ac_chg) | |
161 | ||
162 | /** | |
163 | * struct ab8500_charger_interrupts - ab8500 interupts | |
164 | * @name: name of the interrupt | |
165 | * @isr function pointer to the isr | |
166 | */ | |
167 | struct ab8500_charger_interrupts { | |
168 | char *name; | |
169 | irqreturn_t (*isr)(int irq, void *data); | |
170 | }; | |
171 | ||
172 | struct ab8500_charger_info { | |
173 | int charger_connected; | |
174 | int charger_online; | |
175 | int charger_voltage; | |
176 | int cv_active; | |
177 | bool wd_expired; | |
a864c5a8 | 178 | int charger_current; |
84edbeea AM |
179 | }; |
180 | ||
181 | struct ab8500_charger_event_flags { | |
182 | bool mainextchnotok; | |
183 | bool main_thermal_prot; | |
184 | bool usb_thermal_prot; | |
185 | bool vbus_ovv; | |
186 | bool usbchargernotok; | |
187 | bool chgwdexp; | |
188 | bool vbus_collapse; | |
34c11a70 | 189 | bool vbus_drop_end; |
84edbeea AM |
190 | }; |
191 | ||
192 | struct ab8500_charger_usb_state { | |
84edbeea | 193 | int usb_current; |
34c11a70 | 194 | int usb_current_tmp; |
84edbeea | 195 | enum ab8500_usb_state state; |
34c11a70 | 196 | enum ab8500_usb_state state_tmp; |
84edbeea AM |
197 | spinlock_t usb_lock; |
198 | }; | |
199 | ||
200 | /** | |
201 | * struct ab8500_charger - ab8500 Charger device information | |
202 | * @dev: Pointer to the structure device | |
203 | * @max_usb_in_curr: Max USB charger input current | |
204 | * @vbus_detected: VBUS detected | |
205 | * @vbus_detected_start: | |
206 | * VBUS detected during startup | |
207 | * @ac_conn: This will be true when the AC charger has been plugged | |
208 | * @vddadc_en_ac: Indicate if VDD ADC supply is enabled because AC | |
209 | * charger is enabled | |
210 | * @vddadc_en_usb: Indicate if VDD ADC supply is enabled because USB | |
211 | * charger is enabled | |
212 | * @vbat Battery voltage | |
213 | * @old_vbat Previously measured battery voltage | |
4b45f4a9 | 214 | * @usb_device_is_unrecognised USB device is unrecognised by the hardware |
84edbeea | 215 | * @autopower Indicate if we should have automatic pwron after pwrloss |
4aef72db | 216 | * @autopower_cfg platform specific power config support for "pwron after pwrloss" |
ff38090a | 217 | * @invalid_charger_detect_state State when forcing AB to use invalid charger |
34c11a70 POH |
218 | * @is_usb_host: Indicate if last detected USB type is host |
219 | * @is_aca_rid: Incicate if accessory is ACA type | |
220 | * @current_stepping_sessions: | |
221 | * Counter for current stepping sessions | |
84edbeea AM |
222 | * @parent: Pointer to the struct ab8500 |
223 | * @gpadc: Pointer to the struct gpadc | |
b0284de0 | 224 | * @bm: Platform specific battery management information |
84edbeea AM |
225 | * @flags: Structure for information about events triggered |
226 | * @usb_state: Structure for usb stack information | |
227 | * @ac_chg: AC charger power supply | |
228 | * @usb_chg: USB charger power supply | |
229 | * @ac: Structure that holds the AC charger properties | |
230 | * @usb: Structure that holds the USB charger properties | |
231 | * @regu: Pointer to the struct regulator | |
232 | * @charger_wq: Work queue for the IRQs and checking HW state | |
34c11a70 POH |
233 | * @usb_ipt_crnt_lock: Lock to protect VBUS input current setting from mutuals |
234 | * @pm_lock: Lock to prevent system to suspend | |
84edbeea AM |
235 | * @check_vbat_work Work for checking vbat threshold to adjust vbus current |
236 | * @check_hw_failure_work: Work for checking HW state | |
237 | * @check_usbchgnotok_work: Work for checking USB charger not ok status | |
238 | * @kick_wd_work: Work for kicking the charger watchdog in case | |
239 | * of ABB rev 1.* due to the watchog logic bug | |
b269fff4 LJ |
240 | * @ac_charger_attached_work: Work for checking if AC charger is still |
241 | * connected | |
242 | * @usb_charger_attached_work: Work for checking if USB charger is still | |
243 | * connected | |
84edbeea AM |
244 | * @ac_work: Work for checking AC charger connection |
245 | * @detect_usb_type_work: Work for detecting the USB type connected | |
246 | * @usb_link_status_work: Work for checking the new USB link status | |
247 | * @usb_state_changed_work: Work for checking USB state | |
34c11a70 POH |
248 | * @attach_work: Work for detecting USB type |
249 | * @vbus_drop_end_work: Work for detecting VBUS drop end | |
84edbeea AM |
250 | * @check_main_thermal_prot_work: |
251 | * Work for checking Main thermal status | |
252 | * @check_usb_thermal_prot_work: | |
253 | * Work for checking USB thermal status | |
b269fff4 | 254 | * @charger_attached_mutex: For controlling the wakelock |
84edbeea AM |
255 | */ |
256 | struct ab8500_charger { | |
257 | struct device *dev; | |
258 | int max_usb_in_curr; | |
259 | bool vbus_detected; | |
260 | bool vbus_detected_start; | |
261 | bool ac_conn; | |
262 | bool vddadc_en_ac; | |
263 | bool vddadc_en_usb; | |
264 | int vbat; | |
265 | int old_vbat; | |
4b45f4a9 | 266 | bool usb_device_is_unrecognised; |
84edbeea | 267 | bool autopower; |
4aef72db | 268 | bool autopower_cfg; |
ff38090a | 269 | int invalid_charger_detect_state; |
34c11a70 POH |
270 | bool is_usb_host; |
271 | int is_aca_rid; | |
272 | atomic_t current_stepping_sessions; | |
84edbeea AM |
273 | struct ab8500 *parent; |
274 | struct ab8500_gpadc *gpadc; | |
b0284de0 | 275 | struct abx500_bm_data *bm; |
84edbeea AM |
276 | struct ab8500_charger_event_flags flags; |
277 | struct ab8500_charger_usb_state usb_state; | |
278 | struct ux500_charger ac_chg; | |
279 | struct ux500_charger usb_chg; | |
280 | struct ab8500_charger_info ac; | |
281 | struct ab8500_charger_info usb; | |
282 | struct regulator *regu; | |
283 | struct workqueue_struct *charger_wq; | |
34c11a70 | 284 | struct mutex usb_ipt_crnt_lock; |
84edbeea AM |
285 | struct delayed_work check_vbat_work; |
286 | struct delayed_work check_hw_failure_work; | |
287 | struct delayed_work check_usbchgnotok_work; | |
288 | struct delayed_work kick_wd_work; | |
34c11a70 | 289 | struct delayed_work usb_state_changed_work; |
4b45f4a9 | 290 | struct delayed_work attach_work; |
b269fff4 LJ |
291 | struct delayed_work ac_charger_attached_work; |
292 | struct delayed_work usb_charger_attached_work; | |
34c11a70 | 293 | struct delayed_work vbus_drop_end_work; |
84edbeea AM |
294 | struct work_struct ac_work; |
295 | struct work_struct detect_usb_type_work; | |
296 | struct work_struct usb_link_status_work; | |
84edbeea AM |
297 | struct work_struct check_main_thermal_prot_work; |
298 | struct work_struct check_usb_thermal_prot_work; | |
efd71c89 | 299 | struct usb_phy *usb_phy; |
84edbeea | 300 | struct notifier_block nb; |
b269fff4 | 301 | struct mutex charger_attached_mutex; |
84edbeea AM |
302 | }; |
303 | ||
304 | /* AC properties */ | |
305 | static enum power_supply_property ab8500_charger_ac_props[] = { | |
306 | POWER_SUPPLY_PROP_HEALTH, | |
307 | POWER_SUPPLY_PROP_PRESENT, | |
308 | POWER_SUPPLY_PROP_ONLINE, | |
309 | POWER_SUPPLY_PROP_VOLTAGE_NOW, | |
310 | POWER_SUPPLY_PROP_VOLTAGE_AVG, | |
311 | POWER_SUPPLY_PROP_CURRENT_NOW, | |
312 | }; | |
313 | ||
314 | /* USB properties */ | |
315 | static enum power_supply_property ab8500_charger_usb_props[] = { | |
316 | POWER_SUPPLY_PROP_HEALTH, | |
317 | POWER_SUPPLY_PROP_CURRENT_AVG, | |
318 | POWER_SUPPLY_PROP_PRESENT, | |
319 | POWER_SUPPLY_PROP_ONLINE, | |
320 | POWER_SUPPLY_PROP_VOLTAGE_NOW, | |
321 | POWER_SUPPLY_PROP_VOLTAGE_AVG, | |
322 | POWER_SUPPLY_PROP_CURRENT_NOW, | |
323 | }; | |
324 | ||
defbfa9c POH |
325 | /* |
326 | * Function for enabling and disabling sw fallback mode | |
327 | * should always be disabled when no charger is connected. | |
84edbeea | 328 | */ |
defbfa9c POH |
329 | static void ab8500_enable_disable_sw_fallback(struct ab8500_charger *di, |
330 | bool fallback) | |
84edbeea | 331 | { |
b0163222 | 332 | u8 val; |
84edbeea | 333 | u8 reg; |
b0163222 NG |
334 | u8 bank; |
335 | u8 bit; | |
84edbeea AM |
336 | int ret; |
337 | ||
defbfa9c | 338 | dev_dbg(di->dev, "SW Fallback: %d\n", fallback); |
84edbeea | 339 | |
b0163222 NG |
340 | if (is_ab8500(di->parent)) { |
341 | bank = 0x15; | |
342 | reg = 0x0; | |
343 | bit = 3; | |
344 | } else { | |
345 | bank = AB8500_SYS_CTRL1_BLOCK; | |
346 | reg = AB8500_SW_CONTROL_FALLBACK; | |
347 | bit = 0; | |
348 | } | |
349 | ||
defbfa9c | 350 | /* read the register containing fallback bit */ |
b0163222 NG |
351 | ret = abx500_get_register_interruptible(di->dev, bank, reg, &val); |
352 | if (ret < 0) { | |
353 | dev_err(di->dev, "%d read failed\n", __LINE__); | |
84edbeea AM |
354 | return; |
355 | } | |
356 | ||
b0163222 NG |
357 | if (is_ab8500(di->parent)) { |
358 | /* enable the OPT emulation registers */ | |
359 | ret = abx500_set_register_interruptible(di->dev, 0x11, 0x00, 0x2); | |
360 | if (ret) { | |
361 | dev_err(di->dev, "%d write failed\n", __LINE__); | |
362 | goto disable_otp; | |
363 | } | |
84edbeea AM |
364 | } |
365 | ||
defbfa9c | 366 | if (fallback) |
b0163222 | 367 | val |= (1 << bit); |
84edbeea | 368 | else |
b0163222 | 369 | val &= ~(1 << bit); |
84edbeea | 370 | |
defbfa9c | 371 | /* write back the changed fallback bit value to register */ |
b0163222 | 372 | ret = abx500_set_register_interruptible(di->dev, bank, reg, val); |
84edbeea AM |
373 | if (ret) { |
374 | dev_err(di->dev, "%d write failed\n", __LINE__); | |
84edbeea AM |
375 | } |
376 | ||
b0163222 NG |
377 | disable_otp: |
378 | if (is_ab8500(di->parent)) { | |
379 | /* disable the set OTP registers again */ | |
380 | ret = abx500_set_register_interruptible(di->dev, 0x11, 0x00, 0x0); | |
381 | if (ret) { | |
382 | dev_err(di->dev, "%d write failed\n", __LINE__); | |
383 | } | |
84edbeea AM |
384 | } |
385 | } | |
386 | ||
387 | /** | |
388 | * ab8500_power_supply_changed - a wrapper with local extentions for | |
389 | * power_supply_changed | |
390 | * @di: pointer to the ab8500_charger structure | |
391 | * @psy: pointer to power_supply_that have changed. | |
392 | * | |
393 | */ | |
394 | static void ab8500_power_supply_changed(struct ab8500_charger *di, | |
395 | struct power_supply *psy) | |
396 | { | |
4aef72db | 397 | if (di->autopower_cfg) { |
84edbeea AM |
398 | if (!di->usb.charger_connected && |
399 | !di->ac.charger_connected && | |
400 | di->autopower) { | |
401 | di->autopower = false; | |
defbfa9c | 402 | ab8500_enable_disable_sw_fallback(di, false); |
84edbeea AM |
403 | } else if (!di->autopower && |
404 | (di->ac.charger_connected || | |
405 | di->usb.charger_connected)) { | |
406 | di->autopower = true; | |
defbfa9c | 407 | ab8500_enable_disable_sw_fallback(di, true); |
84edbeea AM |
408 | } |
409 | } | |
410 | power_supply_changed(psy); | |
411 | } | |
412 | ||
413 | static void ab8500_charger_set_usb_connected(struct ab8500_charger *di, | |
414 | bool connected) | |
415 | { | |
416 | if (connected != di->usb.charger_connected) { | |
417 | dev_dbg(di->dev, "USB connected:%i\n", connected); | |
418 | di->usb.charger_connected = connected; | |
419 | sysfs_notify(&di->usb_chg.psy.dev->kobj, NULL, "present"); | |
b269fff4 LJ |
420 | |
421 | if (connected) { | |
422 | mutex_lock(&di->charger_attached_mutex); | |
423 | mutex_unlock(&di->charger_attached_mutex); | |
424 | ||
425 | queue_delayed_work(di->charger_wq, | |
426 | &di->usb_charger_attached_work, | |
427 | HZ); | |
428 | } else { | |
429 | cancel_delayed_work_sync(&di->usb_charger_attached_work); | |
430 | mutex_lock(&di->charger_attached_mutex); | |
431 | mutex_unlock(&di->charger_attached_mutex); | |
432 | } | |
84edbeea AM |
433 | } |
434 | } | |
435 | ||
436 | /** | |
437 | * ab8500_charger_get_ac_voltage() - get ac charger voltage | |
438 | * @di: pointer to the ab8500_charger structure | |
439 | * | |
440 | * Returns ac charger voltage (on success) | |
441 | */ | |
442 | static int ab8500_charger_get_ac_voltage(struct ab8500_charger *di) | |
443 | { | |
444 | int vch; | |
445 | ||
446 | /* Only measure voltage if the charger is connected */ | |
447 | if (di->ac.charger_connected) { | |
448 | vch = ab8500_gpadc_convert(di->gpadc, MAIN_CHARGER_V); | |
449 | if (vch < 0) | |
450 | dev_err(di->dev, "%s gpadc conv failed,\n", __func__); | |
451 | } else { | |
452 | vch = 0; | |
453 | } | |
454 | return vch; | |
455 | } | |
456 | ||
457 | /** | |
458 | * ab8500_charger_ac_cv() - check if the main charger is in CV mode | |
459 | * @di: pointer to the ab8500_charger structure | |
460 | * | |
461 | * Returns ac charger CV mode (on success) else error code | |
462 | */ | |
463 | static int ab8500_charger_ac_cv(struct ab8500_charger *di) | |
464 | { | |
465 | u8 val; | |
466 | int ret = 0; | |
467 | ||
468 | /* Only check CV mode if the charger is online */ | |
469 | if (di->ac.charger_online) { | |
470 | ret = abx500_get_register_interruptible(di->dev, AB8500_CHARGER, | |
471 | AB8500_CH_STATUS1_REG, &val); | |
472 | if (ret < 0) { | |
473 | dev_err(di->dev, "%s ab8500 read failed\n", __func__); | |
474 | return 0; | |
475 | } | |
476 | ||
477 | if (val & MAIN_CH_CV_ON) | |
478 | ret = 1; | |
479 | else | |
480 | ret = 0; | |
481 | } | |
482 | ||
483 | return ret; | |
484 | } | |
485 | ||
486 | /** | |
487 | * ab8500_charger_get_vbus_voltage() - get vbus voltage | |
488 | * @di: pointer to the ab8500_charger structure | |
489 | * | |
490 | * This function returns the vbus voltage. | |
491 | * Returns vbus voltage (on success) | |
492 | */ | |
493 | static int ab8500_charger_get_vbus_voltage(struct ab8500_charger *di) | |
494 | { | |
495 | int vch; | |
496 | ||
497 | /* Only measure voltage if the charger is connected */ | |
498 | if (di->usb.charger_connected) { | |
499 | vch = ab8500_gpadc_convert(di->gpadc, VBUS_V); | |
500 | if (vch < 0) | |
501 | dev_err(di->dev, "%s gpadc conv failed\n", __func__); | |
502 | } else { | |
503 | vch = 0; | |
504 | } | |
505 | return vch; | |
506 | } | |
507 | ||
508 | /** | |
509 | * ab8500_charger_get_usb_current() - get usb charger current | |
510 | * @di: pointer to the ab8500_charger structure | |
511 | * | |
512 | * This function returns the usb charger current. | |
513 | * Returns usb current (on success) and error code on failure | |
514 | */ | |
515 | static int ab8500_charger_get_usb_current(struct ab8500_charger *di) | |
516 | { | |
517 | int ich; | |
518 | ||
519 | /* Only measure current if the charger is online */ | |
520 | if (di->usb.charger_online) { | |
521 | ich = ab8500_gpadc_convert(di->gpadc, USB_CHARGER_C); | |
522 | if (ich < 0) | |
523 | dev_err(di->dev, "%s gpadc conv failed\n", __func__); | |
524 | } else { | |
525 | ich = 0; | |
526 | } | |
527 | return ich; | |
528 | } | |
529 | ||
530 | /** | |
531 | * ab8500_charger_get_ac_current() - get ac charger current | |
532 | * @di: pointer to the ab8500_charger structure | |
533 | * | |
534 | * This function returns the ac charger current. | |
535 | * Returns ac current (on success) and error code on failure. | |
536 | */ | |
537 | static int ab8500_charger_get_ac_current(struct ab8500_charger *di) | |
538 | { | |
539 | int ich; | |
540 | ||
541 | /* Only measure current if the charger is online */ | |
542 | if (di->ac.charger_online) { | |
543 | ich = ab8500_gpadc_convert(di->gpadc, MAIN_CHARGER_C); | |
544 | if (ich < 0) | |
545 | dev_err(di->dev, "%s gpadc conv failed\n", __func__); | |
546 | } else { | |
547 | ich = 0; | |
548 | } | |
549 | return ich; | |
550 | } | |
551 | ||
552 | /** | |
553 | * ab8500_charger_usb_cv() - check if the usb charger is in CV mode | |
554 | * @di: pointer to the ab8500_charger structure | |
555 | * | |
556 | * Returns ac charger CV mode (on success) else error code | |
557 | */ | |
558 | static int ab8500_charger_usb_cv(struct ab8500_charger *di) | |
559 | { | |
560 | int ret; | |
561 | u8 val; | |
562 | ||
563 | /* Only check CV mode if the charger is online */ | |
564 | if (di->usb.charger_online) { | |
565 | ret = abx500_get_register_interruptible(di->dev, AB8500_CHARGER, | |
566 | AB8500_CH_USBCH_STAT1_REG, &val); | |
567 | if (ret < 0) { | |
568 | dev_err(di->dev, "%s ab8500 read failed\n", __func__); | |
569 | return 0; | |
570 | } | |
571 | ||
572 | if (val & USB_CH_CV_ON) | |
573 | ret = 1; | |
574 | else | |
575 | ret = 0; | |
576 | } else { | |
577 | ret = 0; | |
578 | } | |
579 | ||
580 | return ret; | |
581 | } | |
582 | ||
583 | /** | |
584 | * ab8500_charger_detect_chargers() - Detect the connected chargers | |
585 | * @di: pointer to the ab8500_charger structure | |
34c11a70 | 586 | * @probe: if probe, don't delay and wait for HW |
84edbeea AM |
587 | * |
588 | * Returns the type of charger connected. | |
589 | * For USB it will not mean we can actually charge from it | |
590 | * but that there is a USB cable connected that we have to | |
591 | * identify. This is used during startup when we don't get | |
592 | * interrupts of the charger detection | |
593 | * | |
594 | * Returns an integer value, that means, | |
595 | * NO_PW_CONN no power supply is connected | |
596 | * AC_PW_CONN if the AC power supply is connected | |
597 | * USB_PW_CONN if the USB power supply is connected | |
598 | * AC_PW_CONN + USB_PW_CONN if USB and AC power supplies are both connected | |
599 | */ | |
34c11a70 | 600 | static int ab8500_charger_detect_chargers(struct ab8500_charger *di, bool probe) |
84edbeea AM |
601 | { |
602 | int result = NO_PW_CONN; | |
603 | int ret; | |
604 | u8 val; | |
605 | ||
606 | /* Check for AC charger */ | |
607 | ret = abx500_get_register_interruptible(di->dev, AB8500_CHARGER, | |
608 | AB8500_CH_STATUS1_REG, &val); | |
609 | if (ret < 0) { | |
610 | dev_err(di->dev, "%s ab8500 read failed\n", __func__); | |
611 | return ret; | |
612 | } | |
613 | ||
614 | if (val & MAIN_CH_DET) | |
615 | result = AC_PW_CONN; | |
616 | ||
617 | /* Check for USB charger */ | |
34c11a70 POH |
618 | |
619 | if (!probe) { | |
620 | /* | |
621 | * AB8500 says VBUS_DET_DBNC1 & VBUS_DET_DBNC100 | |
622 | * when disconnecting ACA even though no | |
623 | * charger was connected. Try waiting a little | |
624 | * longer than the 100 ms of VBUS_DET_DBNC100... | |
625 | */ | |
626 | msleep(110); | |
627 | } | |
84edbeea AM |
628 | ret = abx500_get_register_interruptible(di->dev, AB8500_CHARGER, |
629 | AB8500_CH_USBCH_STAT1_REG, &val); | |
630 | if (ret < 0) { | |
631 | dev_err(di->dev, "%s ab8500 read failed\n", __func__); | |
632 | return ret; | |
633 | } | |
34c11a70 POH |
634 | dev_dbg(di->dev, |
635 | "%s AB8500_CH_USBCH_STAT1_REG %x\n", __func__, | |
636 | val); | |
84edbeea AM |
637 | if ((val & VBUS_DET_DBNC1) && (val & VBUS_DET_DBNC100)) |
638 | result |= USB_PW_CONN; | |
639 | ||
640 | return result; | |
641 | } | |
642 | ||
643 | /** | |
644 | * ab8500_charger_max_usb_curr() - get the max curr for the USB type | |
645 | * @di: pointer to the ab8500_charger structure | |
646 | * @link_status: the identified USB type | |
647 | * | |
648 | * Get the maximum current that is allowed to be drawn from the host | |
649 | * based on the USB type. | |
650 | * Returns error code in case of failure else 0 on success | |
651 | */ | |
652 | static int ab8500_charger_max_usb_curr(struct ab8500_charger *di, | |
74a8e349 | 653 | enum ab8500_charger_link_status link_status) |
84edbeea AM |
654 | { |
655 | int ret = 0; | |
656 | ||
4b45f4a9 MC |
657 | di->usb_device_is_unrecognised = false; |
658 | ||
34c11a70 POH |
659 | /* |
660 | * Platform only supports USB 2.0. | |
661 | * This means that charging current from USB source | |
662 | * is maximum 500 mA. Every occurence of USB_STAT_*_HOST_* | |
663 | * should set USB_CH_IP_CUR_LVL_0P5. | |
664 | */ | |
665 | ||
84edbeea AM |
666 | switch (link_status) { |
667 | case USB_STAT_STD_HOST_NC: | |
668 | case USB_STAT_STD_HOST_C_NS: | |
669 | case USB_STAT_STD_HOST_C_S: | |
670 | dev_dbg(di->dev, "USB Type - Standard host is " | |
34c11a70 POH |
671 | "detected through USB driver\n"); |
672 | di->max_usb_in_curr = USB_CH_IP_CUR_LVL_0P5; | |
673 | di->is_usb_host = true; | |
674 | di->is_aca_rid = 0; | |
84edbeea AM |
675 | break; |
676 | case USB_STAT_HOST_CHG_HS_CHIRP: | |
677 | di->max_usb_in_curr = USB_CH_IP_CUR_LVL_0P5; | |
34c11a70 POH |
678 | di->is_usb_host = true; |
679 | di->is_aca_rid = 0; | |
84edbeea AM |
680 | break; |
681 | case USB_STAT_HOST_CHG_HS: | |
34c11a70 POH |
682 | di->max_usb_in_curr = USB_CH_IP_CUR_LVL_0P5; |
683 | di->is_usb_host = true; | |
684 | di->is_aca_rid = 0; | |
685 | break; | |
84edbeea AM |
686 | case USB_STAT_ACA_RID_C_HS: |
687 | di->max_usb_in_curr = USB_CH_IP_CUR_LVL_0P9; | |
34c11a70 POH |
688 | di->is_usb_host = false; |
689 | di->is_aca_rid = 0; | |
84edbeea AM |
690 | break; |
691 | case USB_STAT_ACA_RID_A: | |
692 | /* | |
693 | * Dedicated charger level minus maximum current accessory | |
34c11a70 | 694 | * can consume (900mA). Closest level is 500mA |
84edbeea | 695 | */ |
34c11a70 POH |
696 | dev_dbg(di->dev, "USB_STAT_ACA_RID_A detected\n"); |
697 | di->max_usb_in_curr = USB_CH_IP_CUR_LVL_0P5; | |
698 | di->is_usb_host = false; | |
699 | di->is_aca_rid = 1; | |
84edbeea AM |
700 | break; |
701 | case USB_STAT_ACA_RID_B: | |
702 | /* | |
703 | * Dedicated charger level minus 120mA (20mA for ACA and | |
704 | * 100mA for potential accessory). Closest level is 1300mA | |
705 | */ | |
706 | di->max_usb_in_curr = USB_CH_IP_CUR_LVL_1P3; | |
74a8e349 HB |
707 | dev_dbg(di->dev, "USB Type - 0x%02x MaxCurr: %d", link_status, |
708 | di->max_usb_in_curr); | |
34c11a70 POH |
709 | di->is_usb_host = false; |
710 | di->is_aca_rid = 1; | |
84edbeea | 711 | break; |
84edbeea | 712 | case USB_STAT_HOST_CHG_NM: |
34c11a70 POH |
713 | di->max_usb_in_curr = USB_CH_IP_CUR_LVL_0P5; |
714 | di->is_usb_host = true; | |
715 | di->is_aca_rid = 0; | |
716 | break; | |
74a8e349 | 717 | case USB_STAT_DEDICATED_CHG: |
34c11a70 POH |
718 | di->max_usb_in_curr = USB_CH_IP_CUR_LVL_1P5; |
719 | di->is_usb_host = false; | |
720 | di->is_aca_rid = 0; | |
721 | break; | |
74a8e349 | 722 | case USB_STAT_ACA_RID_C_HS_CHIRP: |
34c11a70 | 723 | case USB_STAT_ACA_RID_C_NM: |
84edbeea | 724 | di->max_usb_in_curr = USB_CH_IP_CUR_LVL_1P5; |
34c11a70 POH |
725 | di->is_usb_host = false; |
726 | di->is_aca_rid = 1; | |
84edbeea | 727 | break; |
4b45f4a9 MC |
728 | case USB_STAT_NOT_CONFIGURED: |
729 | if (di->vbus_detected) { | |
730 | di->usb_device_is_unrecognised = true; | |
731 | dev_dbg(di->dev, "USB Type - Legacy charger.\n"); | |
732 | di->max_usb_in_curr = USB_CH_IP_CUR_LVL_1P5; | |
733 | break; | |
734 | } | |
84edbeea | 735 | case USB_STAT_HM_IDGND: |
84edbeea AM |
736 | dev_err(di->dev, "USB Type - Charging not allowed\n"); |
737 | di->max_usb_in_curr = USB_CH_IP_CUR_LVL_0P05; | |
738 | ret = -ENXIO; | |
739 | break; | |
74a8e349 HB |
740 | case USB_STAT_RESERVED: |
741 | if (is_ab8500(di->parent)) { | |
742 | di->flags.vbus_collapse = true; | |
743 | dev_err(di->dev, "USB Type - USB_STAT_RESERVED " | |
744 | "VBUS has collapsed\n"); | |
745 | ret = -ENXIO; | |
746 | break; | |
747 | } | |
748 | if (is_ab9540(di->parent) || is_ab8505(di->parent)) { | |
749 | dev_dbg(di->dev, "USB Type - Charging not allowed\n"); | |
750 | di->max_usb_in_curr = USB_CH_IP_CUR_LVL_0P05; | |
751 | dev_dbg(di->dev, "USB Type - 0x%02x MaxCurr: %d", | |
752 | link_status, di->max_usb_in_curr); | |
753 | ret = -ENXIO; | |
754 | break; | |
755 | } | |
756 | break; | |
757 | case USB_STAT_CARKIT_1: | |
758 | case USB_STAT_CARKIT_2: | |
759 | case USB_STAT_ACA_DOCK_CHARGER: | |
760 | case USB_STAT_CHARGER_LINE_1: | |
761 | di->max_usb_in_curr = USB_CH_IP_CUR_LVL_0P5; | |
762 | dev_dbg(di->dev, "USB Type - 0x%02x MaxCurr: %d", link_status, | |
763 | di->max_usb_in_curr); | |
ff38090a HS |
764 | case USB_STAT_NOT_VALID_LINK: |
765 | dev_err(di->dev, "USB Type invalid - try charging anyway\n"); | |
766 | di->max_usb_in_curr = USB_CH_IP_CUR_LVL_0P5; | |
74a8e349 HB |
767 | break; |
768 | ||
84edbeea AM |
769 | default: |
770 | dev_err(di->dev, "USB Type - Unknown\n"); | |
771 | di->max_usb_in_curr = USB_CH_IP_CUR_LVL_0P05; | |
772 | ret = -ENXIO; | |
773 | break; | |
774 | }; | |
775 | ||
776 | dev_dbg(di->dev, "USB Type - 0x%02x MaxCurr: %d", | |
777 | link_status, di->max_usb_in_curr); | |
778 | ||
779 | return ret; | |
780 | } | |
781 | ||
782 | /** | |
783 | * ab8500_charger_read_usb_type() - read the type of usb connected | |
784 | * @di: pointer to the ab8500_charger structure | |
785 | * | |
786 | * Detect the type of the plugged USB | |
787 | * Returns error code in case of failure else 0 on success | |
788 | */ | |
789 | static int ab8500_charger_read_usb_type(struct ab8500_charger *di) | |
790 | { | |
791 | int ret; | |
792 | u8 val; | |
793 | ||
794 | ret = abx500_get_register_interruptible(di->dev, | |
795 | AB8500_INTERRUPT, AB8500_IT_SOURCE21_REG, &val); | |
796 | if (ret < 0) { | |
797 | dev_err(di->dev, "%s ab8500 read failed\n", __func__); | |
798 | return ret; | |
799 | } | |
74a8e349 HB |
800 | if (is_ab8500(di->parent)) { |
801 | ret = abx500_get_register_interruptible(di->dev, AB8500_USB, | |
802 | AB8500_USB_LINE_STAT_REG, &val); | |
803 | } else { | |
804 | if (is_ab9540(di->parent) || is_ab8505(di->parent)) | |
805 | ret = abx500_get_register_interruptible(di->dev, | |
806 | AB8500_USB, AB8500_USB_LINK1_STAT_REG, &val); | |
807 | } | |
84edbeea AM |
808 | if (ret < 0) { |
809 | dev_err(di->dev, "%s ab8500 read failed\n", __func__); | |
810 | return ret; | |
811 | } | |
812 | ||
813 | /* get the USB type */ | |
814 | val = (val & AB8500_USB_LINK_STATUS) >> 3; | |
815 | ret = ab8500_charger_max_usb_curr(di, | |
816 | (enum ab8500_charger_link_status) val); | |
817 | ||
818 | return ret; | |
819 | } | |
820 | ||
821 | /** | |
822 | * ab8500_charger_detect_usb_type() - get the type of usb connected | |
823 | * @di: pointer to the ab8500_charger structure | |
824 | * | |
825 | * Detect the type of the plugged USB | |
826 | * Returns error code in case of failure else 0 on success | |
827 | */ | |
828 | static int ab8500_charger_detect_usb_type(struct ab8500_charger *di) | |
829 | { | |
830 | int i, ret; | |
831 | u8 val; | |
832 | ||
833 | /* | |
834 | * On getting the VBUS rising edge detect interrupt there | |
835 | * is a 250ms delay after which the register UsbLineStatus | |
836 | * is filled with valid data. | |
837 | */ | |
838 | for (i = 0; i < 10; i++) { | |
839 | msleep(250); | |
840 | ret = abx500_get_register_interruptible(di->dev, | |
841 | AB8500_INTERRUPT, AB8500_IT_SOURCE21_REG, | |
842 | &val); | |
34c11a70 POH |
843 | dev_dbg(di->dev, "%s AB8500_IT_SOURCE21_REG %x\n", |
844 | __func__, val); | |
84edbeea AM |
845 | if (ret < 0) { |
846 | dev_err(di->dev, "%s ab8500 read failed\n", __func__); | |
847 | return ret; | |
848 | } | |
74a8e349 HB |
849 | |
850 | if (is_ab8500(di->parent)) | |
851 | ret = abx500_get_register_interruptible(di->dev, | |
852 | AB8500_USB, AB8500_USB_LINE_STAT_REG, &val); | |
853 | else | |
854 | ret = abx500_get_register_interruptible(di->dev, | |
855 | AB8500_USB, AB8500_USB_LINK1_STAT_REG, &val); | |
84edbeea AM |
856 | if (ret < 0) { |
857 | dev_err(di->dev, "%s ab8500 read failed\n", __func__); | |
858 | return ret; | |
859 | } | |
34c11a70 POH |
860 | dev_dbg(di->dev, "%s AB8500_USB_LINE_STAT_REG %x\n", __func__, |
861 | val); | |
84edbeea AM |
862 | /* |
863 | * Until the IT source register is read the UsbLineStatus | |
864 | * register is not updated, hence doing the same | |
865 | * Revisit this: | |
866 | */ | |
867 | ||
868 | /* get the USB type */ | |
869 | val = (val & AB8500_USB_LINK_STATUS) >> 3; | |
870 | if (val) | |
871 | break; | |
872 | } | |
873 | ret = ab8500_charger_max_usb_curr(di, | |
874 | (enum ab8500_charger_link_status) val); | |
875 | ||
876 | return ret; | |
877 | } | |
878 | ||
879 | /* | |
880 | * This array maps the raw hex value to charger voltage used by the AB8500 | |
881 | * Values taken from the UM0836 | |
882 | */ | |
883 | static int ab8500_charger_voltage_map[] = { | |
884 | 3500 , | |
885 | 3525 , | |
886 | 3550 , | |
887 | 3575 , | |
888 | 3600 , | |
889 | 3625 , | |
890 | 3650 , | |
891 | 3675 , | |
892 | 3700 , | |
893 | 3725 , | |
894 | 3750 , | |
895 | 3775 , | |
896 | 3800 , | |
897 | 3825 , | |
898 | 3850 , | |
899 | 3875 , | |
900 | 3900 , | |
901 | 3925 , | |
902 | 3950 , | |
903 | 3975 , | |
904 | 4000 , | |
905 | 4025 , | |
906 | 4050 , | |
907 | 4060 , | |
908 | 4070 , | |
909 | 4080 , | |
910 | 4090 , | |
911 | 4100 , | |
912 | 4110 , | |
913 | 4120 , | |
914 | 4130 , | |
915 | 4140 , | |
916 | 4150 , | |
917 | 4160 , | |
918 | 4170 , | |
919 | 4180 , | |
920 | 4190 , | |
921 | 4200 , | |
922 | 4210 , | |
923 | 4220 , | |
924 | 4230 , | |
925 | 4240 , | |
926 | 4250 , | |
927 | 4260 , | |
928 | 4270 , | |
929 | 4280 , | |
930 | 4290 , | |
931 | 4300 , | |
932 | 4310 , | |
933 | 4320 , | |
934 | 4330 , | |
935 | 4340 , | |
936 | 4350 , | |
937 | 4360 , | |
938 | 4370 , | |
939 | 4380 , | |
940 | 4390 , | |
941 | 4400 , | |
942 | 4410 , | |
943 | 4420 , | |
944 | 4430 , | |
945 | 4440 , | |
946 | 4450 , | |
947 | 4460 , | |
948 | 4470 , | |
949 | 4480 , | |
950 | 4490 , | |
951 | 4500 , | |
952 | 4510 , | |
953 | 4520 , | |
954 | 4530 , | |
955 | 4540 , | |
956 | 4550 , | |
957 | 4560 , | |
958 | 4570 , | |
959 | 4580 , | |
960 | 4590 , | |
961 | 4600 , | |
962 | }; | |
963 | ||
964 | /* | |
965 | * This array maps the raw hex value to charger current used by the AB8500 | |
966 | * Values taken from the UM0836 | |
967 | */ | |
968 | static int ab8500_charger_current_map[] = { | |
969 | 100 , | |
970 | 200 , | |
971 | 300 , | |
972 | 400 , | |
973 | 500 , | |
974 | 600 , | |
975 | 700 , | |
976 | 800 , | |
977 | 900 , | |
978 | 1000 , | |
979 | 1100 , | |
980 | 1200 , | |
981 | 1300 , | |
982 | 1400 , | |
983 | 1500 , | |
984 | }; | |
985 | ||
986 | /* | |
987 | * This array maps the raw hex value to VBUS input current used by the AB8500 | |
988 | * Values taken from the UM0836 | |
989 | */ | |
990 | static int ab8500_charger_vbus_in_curr_map[] = { | |
991 | USB_CH_IP_CUR_LVL_0P05, | |
992 | USB_CH_IP_CUR_LVL_0P09, | |
993 | USB_CH_IP_CUR_LVL_0P19, | |
994 | USB_CH_IP_CUR_LVL_0P29, | |
995 | USB_CH_IP_CUR_LVL_0P38, | |
996 | USB_CH_IP_CUR_LVL_0P45, | |
997 | USB_CH_IP_CUR_LVL_0P5, | |
998 | USB_CH_IP_CUR_LVL_0P6, | |
999 | USB_CH_IP_CUR_LVL_0P7, | |
1000 | USB_CH_IP_CUR_LVL_0P8, | |
1001 | USB_CH_IP_CUR_LVL_0P9, | |
1002 | USB_CH_IP_CUR_LVL_1P0, | |
1003 | USB_CH_IP_CUR_LVL_1P1, | |
1004 | USB_CH_IP_CUR_LVL_1P3, | |
1005 | USB_CH_IP_CUR_LVL_1P4, | |
1006 | USB_CH_IP_CUR_LVL_1P5, | |
1007 | }; | |
1008 | ||
1009 | static int ab8500_voltage_to_regval(int voltage) | |
1010 | { | |
1011 | int i; | |
1012 | ||
1013 | /* Special case for voltage below 3.5V */ | |
1014 | if (voltage < ab8500_charger_voltage_map[0]) | |
1015 | return LOW_VOLT_REG; | |
1016 | ||
1017 | for (i = 1; i < ARRAY_SIZE(ab8500_charger_voltage_map); i++) { | |
1018 | if (voltage < ab8500_charger_voltage_map[i]) | |
1019 | return i - 1; | |
1020 | } | |
1021 | ||
1022 | /* If not last element, return error */ | |
1023 | i = ARRAY_SIZE(ab8500_charger_voltage_map) - 1; | |
1024 | if (voltage == ab8500_charger_voltage_map[i]) | |
1025 | return i; | |
1026 | else | |
1027 | return -1; | |
1028 | } | |
1029 | ||
1030 | static int ab8500_current_to_regval(int curr) | |
1031 | { | |
1032 | int i; | |
1033 | ||
1034 | if (curr < ab8500_charger_current_map[0]) | |
1035 | return 0; | |
1036 | ||
1037 | for (i = 0; i < ARRAY_SIZE(ab8500_charger_current_map); i++) { | |
1038 | if (curr < ab8500_charger_current_map[i]) | |
1039 | return i - 1; | |
1040 | } | |
1041 | ||
1042 | /* If not last element, return error */ | |
1043 | i = ARRAY_SIZE(ab8500_charger_current_map) - 1; | |
1044 | if (curr == ab8500_charger_current_map[i]) | |
1045 | return i; | |
1046 | else | |
1047 | return -1; | |
1048 | } | |
1049 | ||
1050 | static int ab8500_vbus_in_curr_to_regval(int curr) | |
1051 | { | |
1052 | int i; | |
1053 | ||
1054 | if (curr < ab8500_charger_vbus_in_curr_map[0]) | |
1055 | return 0; | |
1056 | ||
1057 | for (i = 0; i < ARRAY_SIZE(ab8500_charger_vbus_in_curr_map); i++) { | |
1058 | if (curr < ab8500_charger_vbus_in_curr_map[i]) | |
1059 | return i - 1; | |
1060 | } | |
1061 | ||
1062 | /* If not last element, return error */ | |
1063 | i = ARRAY_SIZE(ab8500_charger_vbus_in_curr_map) - 1; | |
1064 | if (curr == ab8500_charger_vbus_in_curr_map[i]) | |
1065 | return i; | |
1066 | else | |
1067 | return -1; | |
1068 | } | |
1069 | ||
1070 | /** | |
1071 | * ab8500_charger_get_usb_cur() - get usb current | |
1072 | * @di: pointer to the ab8500_charger structre | |
1073 | * | |
1074 | * The usb stack provides the maximum current that can be drawn from | |
1075 | * the standard usb host. This will be in mA. | |
1076 | * This function converts current in mA to a value that can be written | |
1077 | * to the register. Returns -1 if charging is not allowed | |
1078 | */ | |
1079 | static int ab8500_charger_get_usb_cur(struct ab8500_charger *di) | |
1080 | { | |
1081 | switch (di->usb_state.usb_current) { | |
1082 | case 100: | |
1083 | di->max_usb_in_curr = USB_CH_IP_CUR_LVL_0P09; | |
1084 | break; | |
1085 | case 200: | |
1086 | di->max_usb_in_curr = USB_CH_IP_CUR_LVL_0P19; | |
1087 | break; | |
1088 | case 300: | |
1089 | di->max_usb_in_curr = USB_CH_IP_CUR_LVL_0P29; | |
1090 | break; | |
1091 | case 400: | |
1092 | di->max_usb_in_curr = USB_CH_IP_CUR_LVL_0P38; | |
1093 | break; | |
1094 | case 500: | |
1095 | di->max_usb_in_curr = USB_CH_IP_CUR_LVL_0P5; | |
1096 | break; | |
1097 | default: | |
1098 | di->max_usb_in_curr = USB_CH_IP_CUR_LVL_0P05; | |
1099 | return -1; | |
1100 | break; | |
1101 | }; | |
1102 | return 0; | |
1103 | } | |
1104 | ||
f8e96dff JB |
1105 | /** |
1106 | * ab8500_charger_set_current() - set charger current | |
1107 | * @di: pointer to the ab8500_charger structure | |
1108 | * @ich: charger current, in mA | |
1109 | * @reg: select what charger register to set | |
1110 | * | |
1111 | * Set charger current. | |
1112 | * There is no state machine in the AB to step up/down the charger | |
1113 | * current to avoid dips and spikes on MAIN, VBUS and VBAT when | |
1114 | * charging is started. Instead we need to implement | |
1115 | * this charger current step-up/down here. | |
1116 | * Returns error code in case of failure else 0(on success) | |
1117 | */ | |
1118 | static int ab8500_charger_set_current(struct ab8500_charger *di, | |
1119 | int ich, int reg) | |
1120 | { | |
34c11a70 POH |
1121 | int ret = 0; |
1122 | int auto_curr_index, curr_index, prev_curr_index, shift_value, i; | |
f8e96dff | 1123 | u8 reg_value; |
34c11a70 POH |
1124 | u32 step_udelay; |
1125 | bool no_stepping = false; | |
1126 | ||
1127 | atomic_inc(&di->current_stepping_sessions); | |
1128 | ||
1129 | ret = abx500_get_register_interruptible(di->dev, AB8500_CHARGER, | |
1130 | reg, ®_value); | |
1131 | if (ret < 0) { | |
1132 | dev_err(di->dev, "%s read failed\n", __func__); | |
1133 | goto exit_set_current; | |
1134 | } | |
f8e96dff JB |
1135 | |
1136 | switch (reg) { | |
1137 | case AB8500_MCH_IPT_CURLVL_REG: | |
1138 | shift_value = MAIN_CH_INPUT_CURR_SHIFT; | |
34c11a70 | 1139 | prev_curr_index = (reg_value >> shift_value); |
f8e96dff | 1140 | curr_index = ab8500_current_to_regval(ich); |
34c11a70 POH |
1141 | step_udelay = STEP_UDELAY; |
1142 | if (!di->ac.charger_connected) | |
1143 | no_stepping = true; | |
f8e96dff JB |
1144 | break; |
1145 | case AB8500_USBCH_IPT_CRNTLVL_REG: | |
1146 | shift_value = VBUS_IN_CURR_LIM_SHIFT; | |
34c11a70 | 1147 | prev_curr_index = (reg_value >> shift_value); |
f8e96dff | 1148 | curr_index = ab8500_vbus_in_curr_to_regval(ich); |
34c11a70 POH |
1149 | step_udelay = STEP_UDELAY * 100; |
1150 | ||
1151 | ret = abx500_get_register_interruptible(di->dev, AB8500_CHARGER, | |
1152 | AB8500_CH_USBCH_STAT2_REG, ®_value); | |
1153 | if (ret < 0) { | |
1154 | dev_err(di->dev, "%s read failed\n", __func__); | |
1155 | goto exit_set_current; | |
1156 | } | |
1157 | auto_curr_index = | |
1158 | reg_value >> AUTO_VBUS_IN_CURR_LIM_SHIFT; | |
1159 | ||
1160 | dev_dbg(di->dev, "%s Auto VBUS curr is %d mA\n", | |
1161 | __func__, | |
1162 | ab8500_charger_vbus_in_curr_map[auto_curr_index]); | |
1163 | ||
1164 | prev_curr_index = min(prev_curr_index, auto_curr_index); | |
1165 | ||
1166 | if (!di->usb.charger_connected) | |
1167 | no_stepping = true; | |
f8e96dff JB |
1168 | break; |
1169 | case AB8500_CH_OPT_CRNTLVL_REG: | |
1170 | shift_value = 0; | |
34c11a70 | 1171 | prev_curr_index = (reg_value >> shift_value); |
f8e96dff | 1172 | curr_index = ab8500_current_to_regval(ich); |
34c11a70 POH |
1173 | step_udelay = STEP_UDELAY; |
1174 | if (curr_index && (curr_index - prev_curr_index) > 1) | |
1175 | step_udelay *= 100; | |
1176 | ||
1177 | if (!di->usb.charger_connected && !di->ac.charger_connected) | |
1178 | no_stepping = true; | |
1179 | ||
f8e96dff JB |
1180 | break; |
1181 | default: | |
1182 | dev_err(di->dev, "%s current register not valid\n", __func__); | |
34c11a70 POH |
1183 | ret = -ENXIO; |
1184 | goto exit_set_current; | |
f8e96dff JB |
1185 | } |
1186 | ||
1187 | if (curr_index < 0) { | |
1188 | dev_err(di->dev, "requested current limit out-of-range\n"); | |
34c11a70 POH |
1189 | ret = -ENXIO; |
1190 | goto exit_set_current; | |
f8e96dff | 1191 | } |
f8e96dff JB |
1192 | |
1193 | /* only update current if it's been changed */ | |
34c11a70 POH |
1194 | if (prev_curr_index == curr_index) { |
1195 | dev_dbg(di->dev, "%s current not changed for reg: 0x%02x\n", | |
1196 | __func__, reg); | |
1197 | ret = 0; | |
1198 | goto exit_set_current; | |
1199 | } | |
f8e96dff JB |
1200 | |
1201 | dev_dbg(di->dev, "%s set charger current: %d mA for reg: 0x%02x\n", | |
1202 | __func__, ich, reg); | |
1203 | ||
34c11a70 POH |
1204 | if (no_stepping) { |
1205 | ret = abx500_set_register_interruptible(di->dev, AB8500_CHARGER, | |
1206 | reg, (u8)curr_index << shift_value); | |
1207 | if (ret) | |
1208 | dev_err(di->dev, "%s write failed\n", __func__); | |
1209 | } else if (prev_curr_index > curr_index) { | |
f8e96dff | 1210 | for (i = prev_curr_index - 1; i >= curr_index; i--) { |
34c11a70 POH |
1211 | dev_dbg(di->dev, "curr change_1 to: %x for 0x%02x\n", |
1212 | (u8) i << shift_value, reg); | |
f8e96dff | 1213 | ret = abx500_set_register_interruptible(di->dev, |
34c11a70 | 1214 | AB8500_CHARGER, reg, (u8)i << shift_value); |
f8e96dff JB |
1215 | if (ret) { |
1216 | dev_err(di->dev, "%s write failed\n", __func__); | |
34c11a70 | 1217 | goto exit_set_current; |
f8e96dff | 1218 | } |
34c11a70 POH |
1219 | if (i != curr_index) |
1220 | usleep_range(step_udelay, step_udelay * 2); | |
f8e96dff JB |
1221 | } |
1222 | } else { | |
1223 | for (i = prev_curr_index + 1; i <= curr_index; i++) { | |
34c11a70 POH |
1224 | dev_dbg(di->dev, "curr change_2 to: %x for 0x%02x\n", |
1225 | (u8)i << shift_value, reg); | |
f8e96dff | 1226 | ret = abx500_set_register_interruptible(di->dev, |
34c11a70 | 1227 | AB8500_CHARGER, reg, (u8)i << shift_value); |
f8e96dff JB |
1228 | if (ret) { |
1229 | dev_err(di->dev, "%s write failed\n", __func__); | |
34c11a70 | 1230 | goto exit_set_current; |
f8e96dff | 1231 | } |
34c11a70 POH |
1232 | if (i != curr_index) |
1233 | usleep_range(step_udelay, step_udelay * 2); | |
f8e96dff JB |
1234 | } |
1235 | } | |
34c11a70 POH |
1236 | |
1237 | exit_set_current: | |
1238 | atomic_dec(&di->current_stepping_sessions); | |
1239 | ||
f8e96dff JB |
1240 | return ret; |
1241 | } | |
1242 | ||
84edbeea AM |
1243 | /** |
1244 | * ab8500_charger_set_vbus_in_curr() - set VBUS input current limit | |
1245 | * @di: pointer to the ab8500_charger structure | |
1246 | * @ich_in: charger input current limit | |
1247 | * | |
1248 | * Sets the current that can be drawn from the USB host | |
1249 | * Returns error code in case of failure else 0(on success) | |
1250 | */ | |
1251 | static int ab8500_charger_set_vbus_in_curr(struct ab8500_charger *di, | |
1252 | int ich_in) | |
1253 | { | |
84edbeea | 1254 | int min_value; |
34c11a70 | 1255 | int ret; |
84edbeea AM |
1256 | |
1257 | /* We should always use to lowest current limit */ | |
b0284de0 | 1258 | min_value = min(di->bm->chg_params->usb_curr_max, ich_in); |
84edbeea AM |
1259 | |
1260 | switch (min_value) { | |
1261 | case 100: | |
1262 | if (di->vbat < VBAT_TRESH_IP_CUR_RED) | |
1263 | min_value = USB_CH_IP_CUR_LVL_0P05; | |
1264 | break; | |
1265 | case 500: | |
1266 | if (di->vbat < VBAT_TRESH_IP_CUR_RED) | |
1267 | min_value = USB_CH_IP_CUR_LVL_0P45; | |
1268 | break; | |
1269 | default: | |
1270 | break; | |
1271 | } | |
1272 | ||
34c11a70 POH |
1273 | dev_info(di->dev, "VBUS input current limit set to %d mA\n", min_value); |
1274 | ||
1275 | mutex_lock(&di->usb_ipt_crnt_lock); | |
1276 | ret = ab8500_charger_set_current(di, min_value, | |
f8e96dff | 1277 | AB8500_USBCH_IPT_CRNTLVL_REG); |
34c11a70 POH |
1278 | mutex_unlock(&di->usb_ipt_crnt_lock); |
1279 | ||
1280 | return ret; | |
f8e96dff | 1281 | } |
84edbeea | 1282 | |
f8e96dff JB |
1283 | /** |
1284 | * ab8500_charger_set_main_in_curr() - set main charger input current | |
1285 | * @di: pointer to the ab8500_charger structure | |
1286 | * @ich_in: input charger current, in mA | |
1287 | * | |
1288 | * Set main charger input current. | |
1289 | * Returns error code in case of failure else 0(on success) | |
1290 | */ | |
1291 | static int ab8500_charger_set_main_in_curr(struct ab8500_charger *di, | |
1292 | int ich_in) | |
1293 | { | |
1294 | return ab8500_charger_set_current(di, ich_in, | |
1295 | AB8500_MCH_IPT_CURLVL_REG); | |
1296 | } | |
84edbeea | 1297 | |
f8e96dff JB |
1298 | /** |
1299 | * ab8500_charger_set_output_curr() - set charger output current | |
1300 | * @di: pointer to the ab8500_charger structure | |
1301 | * @ich_out: output charger current, in mA | |
1302 | * | |
1303 | * Set charger output current. | |
1304 | * Returns error code in case of failure else 0(on success) | |
1305 | */ | |
1306 | static int ab8500_charger_set_output_curr(struct ab8500_charger *di, | |
1307 | int ich_out) | |
1308 | { | |
1309 | return ab8500_charger_set_current(di, ich_out, | |
1310 | AB8500_CH_OPT_CRNTLVL_REG); | |
84edbeea AM |
1311 | } |
1312 | ||
1313 | /** | |
1314 | * ab8500_charger_led_en() - turn on/off chargign led | |
1315 | * @di: pointer to the ab8500_charger structure | |
1316 | * @on: flag to turn on/off the chargign led | |
1317 | * | |
1318 | * Power ON/OFF charging LED indication | |
1319 | * Returns error code in case of failure else 0(on success) | |
1320 | */ | |
1321 | static int ab8500_charger_led_en(struct ab8500_charger *di, int on) | |
1322 | { | |
1323 | int ret; | |
1324 | ||
1325 | if (on) { | |
1326 | /* Power ON charging LED indicator, set LED current to 5mA */ | |
1327 | ret = abx500_set_register_interruptible(di->dev, AB8500_CHARGER, | |
1328 | AB8500_LED_INDICATOR_PWM_CTRL, | |
1329 | (LED_IND_CUR_5MA | LED_INDICATOR_PWM_ENA)); | |
1330 | if (ret) { | |
1331 | dev_err(di->dev, "Power ON LED failed\n"); | |
1332 | return ret; | |
1333 | } | |
1334 | /* LED indicator PWM duty cycle 252/256 */ | |
1335 | ret = abx500_set_register_interruptible(di->dev, AB8500_CHARGER, | |
1336 | AB8500_LED_INDICATOR_PWM_DUTY, | |
1337 | LED_INDICATOR_PWM_DUTY_252_256); | |
1338 | if (ret) { | |
1339 | dev_err(di->dev, "Set LED PWM duty cycle failed\n"); | |
1340 | return ret; | |
1341 | } | |
1342 | } else { | |
1343 | /* Power off charging LED indicator */ | |
1344 | ret = abx500_set_register_interruptible(di->dev, AB8500_CHARGER, | |
1345 | AB8500_LED_INDICATOR_PWM_CTRL, | |
1346 | LED_INDICATOR_PWM_DIS); | |
1347 | if (ret) { | |
1348 | dev_err(di->dev, "Power-off LED failed\n"); | |
1349 | return ret; | |
1350 | } | |
1351 | } | |
1352 | ||
1353 | return ret; | |
1354 | } | |
1355 | ||
1356 | /** | |
1357 | * ab8500_charger_ac_en() - enable or disable ac charging | |
1358 | * @di: pointer to the ab8500_charger structure | |
1359 | * @enable: enable/disable flag | |
1360 | * @vset: charging voltage | |
1361 | * @iset: charging current | |
1362 | * | |
1363 | * Enable/Disable AC/Mains charging and turns on/off the charging led | |
1364 | * respectively. | |
1365 | **/ | |
1366 | static int ab8500_charger_ac_en(struct ux500_charger *charger, | |
1367 | int enable, int vset, int iset) | |
1368 | { | |
1369 | int ret; | |
1370 | int volt_index; | |
1371 | int curr_index; | |
1372 | int input_curr_index; | |
1373 | u8 overshoot = 0; | |
1374 | ||
1375 | struct ab8500_charger *di = to_ab8500_charger_ac_device_info(charger); | |
1376 | ||
1377 | if (enable) { | |
1378 | /* Check if AC is connected */ | |
1379 | if (!di->ac.charger_connected) { | |
1380 | dev_err(di->dev, "AC charger not connected\n"); | |
1381 | return -ENXIO; | |
1382 | } | |
1383 | ||
1384 | /* Enable AC charging */ | |
1385 | dev_dbg(di->dev, "Enable AC: %dmV %dmA\n", vset, iset); | |
1386 | ||
1387 | /* | |
1388 | * Due to a bug in AB8500, BTEMP_HIGH/LOW interrupts | |
1389 | * will be triggered everytime we enable the VDD ADC supply. | |
1390 | * This will turn off charging for a short while. | |
1391 | * It can be avoided by having the supply on when | |
1392 | * there is a charger enabled. Normally the VDD ADC supply | |
1393 | * is enabled everytime a GPADC conversion is triggered. We will | |
1394 | * force it to be enabled from this driver to have | |
1395 | * the GPADC module independant of the AB8500 chargers | |
1396 | */ | |
1397 | if (!di->vddadc_en_ac) { | |
1398 | regulator_enable(di->regu); | |
1399 | di->vddadc_en_ac = true; | |
1400 | } | |
1401 | ||
1402 | /* Check if the requested voltage or current is valid */ | |
1403 | volt_index = ab8500_voltage_to_regval(vset); | |
1404 | curr_index = ab8500_current_to_regval(iset); | |
1405 | input_curr_index = ab8500_current_to_regval( | |
b0284de0 | 1406 | di->bm->chg_params->ac_curr_max); |
84edbeea AM |
1407 | if (volt_index < 0 || curr_index < 0 || input_curr_index < 0) { |
1408 | dev_err(di->dev, | |
1409 | "Charger voltage or current too high, " | |
1410 | "charging not started\n"); | |
1411 | return -ENXIO; | |
1412 | } | |
1413 | ||
1414 | /* ChVoltLevel: maximum battery charging voltage */ | |
1415 | ret = abx500_set_register_interruptible(di->dev, AB8500_CHARGER, | |
1416 | AB8500_CH_VOLT_LVL_REG, (u8) volt_index); | |
1417 | if (ret) { | |
1418 | dev_err(di->dev, "%s write failed\n", __func__); | |
1419 | return ret; | |
1420 | } | |
1421 | /* MainChInputCurr: current that can be drawn from the charger*/ | |
f8e96dff | 1422 | ret = ab8500_charger_set_main_in_curr(di, |
b0284de0 | 1423 | di->bm->chg_params->ac_curr_max); |
84edbeea | 1424 | if (ret) { |
f8e96dff JB |
1425 | dev_err(di->dev, "%s Failed to set MainChInputCurr\n", |
1426 | __func__); | |
84edbeea AM |
1427 | return ret; |
1428 | } | |
1429 | /* ChOutputCurentLevel: protected output current */ | |
f8e96dff | 1430 | ret = ab8500_charger_set_output_curr(di, iset); |
84edbeea | 1431 | if (ret) { |
f8e96dff JB |
1432 | dev_err(di->dev, "%s " |
1433 | "Failed to set ChOutputCurentLevel\n", | |
1434 | __func__); | |
84edbeea AM |
1435 | return ret; |
1436 | } | |
1437 | ||
1438 | /* Check if VBAT overshoot control should be enabled */ | |
b0284de0 | 1439 | if (!di->bm->enable_overshoot) |
84edbeea AM |
1440 | overshoot = MAIN_CH_NO_OVERSHOOT_ENA_N; |
1441 | ||
1442 | /* Enable Main Charger */ | |
1443 | ret = abx500_set_register_interruptible(di->dev, AB8500_CHARGER, | |
1444 | AB8500_MCH_CTRL1, MAIN_CH_ENA | overshoot); | |
1445 | if (ret) { | |
1446 | dev_err(di->dev, "%s write failed\n", __func__); | |
1447 | return ret; | |
1448 | } | |
1449 | ||
1450 | /* Power on charging LED indication */ | |
1451 | ret = ab8500_charger_led_en(di, true); | |
1452 | if (ret < 0) | |
1453 | dev_err(di->dev, "failed to enable LED\n"); | |
1454 | ||
1455 | di->ac.charger_online = 1; | |
1456 | } else { | |
1457 | /* Disable AC charging */ | |
1458 | if (is_ab8500_1p1_or_earlier(di->parent)) { | |
1459 | /* | |
1460 | * For ABB revision 1.0 and 1.1 there is a bug in the | |
1461 | * watchdog logic. That means we have to continously | |
1462 | * kick the charger watchdog even when no charger is | |
1463 | * connected. This is only valid once the AC charger | |
1464 | * has been enabled. This is a bug that is not handled | |
1465 | * by the algorithm and the watchdog have to be kicked | |
1466 | * by the charger driver when the AC charger | |
1467 | * is disabled | |
1468 | */ | |
1469 | if (di->ac_conn) { | |
1470 | queue_delayed_work(di->charger_wq, | |
1471 | &di->kick_wd_work, | |
1472 | round_jiffies(WD_KICK_INTERVAL)); | |
1473 | } | |
1474 | ||
1475 | /* | |
1476 | * We can't turn off charging completely | |
1477 | * due to a bug in AB8500 cut1. | |
1478 | * If we do, charging will not start again. | |
1479 | * That is why we set the lowest voltage | |
1480 | * and current possible | |
1481 | */ | |
1482 | ret = abx500_set_register_interruptible(di->dev, | |
1483 | AB8500_CHARGER, | |
1484 | AB8500_CH_VOLT_LVL_REG, CH_VOL_LVL_3P5); | |
1485 | if (ret) { | |
1486 | dev_err(di->dev, | |
1487 | "%s write failed\n", __func__); | |
1488 | return ret; | |
1489 | } | |
1490 | ||
f8e96dff | 1491 | ret = ab8500_charger_set_output_curr(di, 0); |
84edbeea | 1492 | if (ret) { |
f8e96dff JB |
1493 | dev_err(di->dev, "%s " |
1494 | "Failed to set ChOutputCurentLevel\n", | |
1495 | __func__); | |
84edbeea AM |
1496 | return ret; |
1497 | } | |
1498 | } else { | |
1499 | ret = abx500_set_register_interruptible(di->dev, | |
1500 | AB8500_CHARGER, | |
1501 | AB8500_MCH_CTRL1, 0); | |
1502 | if (ret) { | |
1503 | dev_err(di->dev, | |
1504 | "%s write failed\n", __func__); | |
1505 | return ret; | |
1506 | } | |
1507 | } | |
1508 | ||
1509 | ret = ab8500_charger_led_en(di, false); | |
1510 | if (ret < 0) | |
1511 | dev_err(di->dev, "failed to disable LED\n"); | |
1512 | ||
1513 | di->ac.charger_online = 0; | |
1514 | di->ac.wd_expired = false; | |
1515 | ||
1516 | /* Disable regulator if enabled */ | |
1517 | if (di->vddadc_en_ac) { | |
1518 | regulator_disable(di->regu); | |
1519 | di->vddadc_en_ac = false; | |
1520 | } | |
1521 | ||
1522 | dev_dbg(di->dev, "%s Disabled AC charging\n", __func__); | |
1523 | } | |
1524 | ab8500_power_supply_changed(di, &di->ac_chg.psy); | |
1525 | ||
1526 | return ret; | |
1527 | } | |
1528 | ||
1529 | /** | |
1530 | * ab8500_charger_usb_en() - enable usb charging | |
1531 | * @di: pointer to the ab8500_charger structure | |
1532 | * @enable: enable/disable flag | |
1533 | * @vset: charging voltage | |
1534 | * @ich_out: charger output current | |
1535 | * | |
1536 | * Enable/Disable USB charging and turns on/off the charging led respectively. | |
1537 | * Returns error code in case of failure else 0(on success) | |
1538 | */ | |
1539 | static int ab8500_charger_usb_en(struct ux500_charger *charger, | |
1540 | int enable, int vset, int ich_out) | |
1541 | { | |
1542 | int ret; | |
1543 | int volt_index; | |
1544 | int curr_index; | |
1545 | u8 overshoot = 0; | |
1546 | ||
1547 | struct ab8500_charger *di = to_ab8500_charger_usb_device_info(charger); | |
1548 | ||
1549 | if (enable) { | |
1550 | /* Check if USB is connected */ | |
1551 | if (!di->usb.charger_connected) { | |
1552 | dev_err(di->dev, "USB charger not connected\n"); | |
1553 | return -ENXIO; | |
1554 | } | |
1555 | ||
1556 | /* | |
1557 | * Due to a bug in AB8500, BTEMP_HIGH/LOW interrupts | |
1558 | * will be triggered everytime we enable the VDD ADC supply. | |
1559 | * This will turn off charging for a short while. | |
1560 | * It can be avoided by having the supply on when | |
1561 | * there is a charger enabled. Normally the VDD ADC supply | |
1562 | * is enabled everytime a GPADC conversion is triggered. We will | |
1563 | * force it to be enabled from this driver to have | |
1564 | * the GPADC module independant of the AB8500 chargers | |
1565 | */ | |
1566 | if (!di->vddadc_en_usb) { | |
1567 | regulator_enable(di->regu); | |
1568 | di->vddadc_en_usb = true; | |
1569 | } | |
1570 | ||
1571 | /* Enable USB charging */ | |
1572 | dev_dbg(di->dev, "Enable USB: %dmV %dmA\n", vset, ich_out); | |
1573 | ||
1574 | /* Check if the requested voltage or current is valid */ | |
1575 | volt_index = ab8500_voltage_to_regval(vset); | |
1576 | curr_index = ab8500_current_to_regval(ich_out); | |
1577 | if (volt_index < 0 || curr_index < 0) { | |
1578 | dev_err(di->dev, | |
1579 | "Charger voltage or current too high, " | |
1580 | "charging not started\n"); | |
1581 | return -ENXIO; | |
1582 | } | |
1583 | ||
1584 | /* ChVoltLevel: max voltage upto which battery can be charged */ | |
1585 | ret = abx500_set_register_interruptible(di->dev, AB8500_CHARGER, | |
1586 | AB8500_CH_VOLT_LVL_REG, (u8) volt_index); | |
1587 | if (ret) { | |
1588 | dev_err(di->dev, "%s write failed\n", __func__); | |
1589 | return ret; | |
1590 | } | |
84edbeea | 1591 | /* Check if VBAT overshoot control should be enabled */ |
b0284de0 | 1592 | if (!di->bm->enable_overshoot) |
84edbeea AM |
1593 | overshoot = USB_CHG_NO_OVERSHOOT_ENA_N; |
1594 | ||
1595 | /* Enable USB Charger */ | |
34c11a70 POH |
1596 | dev_dbg(di->dev, |
1597 | "Enabling USB with write to AB8500_USBCH_CTRL1_REG\n"); | |
84edbeea AM |
1598 | ret = abx500_set_register_interruptible(di->dev, AB8500_CHARGER, |
1599 | AB8500_USBCH_CTRL1_REG, USB_CH_ENA | overshoot); | |
1600 | if (ret) { | |
1601 | dev_err(di->dev, "%s write failed\n", __func__); | |
1602 | return ret; | |
1603 | } | |
1604 | ||
1605 | /* If success power on charging LED indication */ | |
1606 | ret = ab8500_charger_led_en(di, true); | |
1607 | if (ret < 0) | |
1608 | dev_err(di->dev, "failed to enable LED\n"); | |
1609 | ||
34c11a70 POH |
1610 | di->usb.charger_online = 1; |
1611 | ||
1612 | /* USBChInputCurr: current that can be drawn from the usb */ | |
1613 | ret = ab8500_charger_set_vbus_in_curr(di, di->max_usb_in_curr); | |
1614 | if (ret) { | |
1615 | dev_err(di->dev, "setting USBChInputCurr failed\n"); | |
1616 | return ret; | |
1617 | } | |
1618 | ||
1619 | /* ChOutputCurentLevel: protected output current */ | |
1620 | ret = ab8500_charger_set_output_curr(di, ich_out); | |
1621 | if (ret) { | |
1622 | dev_err(di->dev, "%s " | |
1623 | "Failed to set ChOutputCurentLevel\n", | |
1624 | __func__); | |
1625 | return ret; | |
1626 | } | |
1627 | ||
84edbeea AM |
1628 | queue_delayed_work(di->charger_wq, &di->check_vbat_work, HZ); |
1629 | ||
84edbeea AM |
1630 | } else { |
1631 | /* Disable USB charging */ | |
34c11a70 | 1632 | dev_dbg(di->dev, "%s Disabled USB charging\n", __func__); |
84edbeea AM |
1633 | ret = abx500_set_register_interruptible(di->dev, |
1634 | AB8500_CHARGER, | |
1635 | AB8500_USBCH_CTRL1_REG, 0); | |
1636 | if (ret) { | |
1637 | dev_err(di->dev, | |
1638 | "%s write failed\n", __func__); | |
1639 | return ret; | |
1640 | } | |
1641 | ||
1642 | ret = ab8500_charger_led_en(di, false); | |
1643 | if (ret < 0) | |
1644 | dev_err(di->dev, "failed to disable LED\n"); | |
34c11a70 POH |
1645 | /* USBChInputCurr: current that can be drawn from the usb */ |
1646 | ret = ab8500_charger_set_vbus_in_curr(di, 0); | |
1647 | if (ret) { | |
1648 | dev_err(di->dev, "setting USBChInputCurr failed\n"); | |
1649 | return ret; | |
1650 | } | |
84edbeea | 1651 | |
34c11a70 POH |
1652 | /* ChOutputCurentLevel: protected output current */ |
1653 | ret = ab8500_charger_set_output_curr(di, 0); | |
1654 | if (ret) { | |
1655 | dev_err(di->dev, "%s " | |
1656 | "Failed to reset ChOutputCurentLevel\n", | |
1657 | __func__); | |
1658 | return ret; | |
1659 | } | |
84edbeea AM |
1660 | di->usb.charger_online = 0; |
1661 | di->usb.wd_expired = false; | |
1662 | ||
1663 | /* Disable regulator if enabled */ | |
1664 | if (di->vddadc_en_usb) { | |
1665 | regulator_disable(di->regu); | |
1666 | di->vddadc_en_usb = false; | |
1667 | } | |
1668 | ||
1669 | dev_dbg(di->dev, "%s Disabled USB charging\n", __func__); | |
1670 | ||
1671 | /* Cancel any pending Vbat check work */ | |
1672 | if (delayed_work_pending(&di->check_vbat_work)) | |
1673 | cancel_delayed_work(&di->check_vbat_work); | |
1674 | ||
1675 | } | |
1676 | ab8500_power_supply_changed(di, &di->usb_chg.psy); | |
1677 | ||
1678 | return ret; | |
1679 | } | |
1680 | ||
4dcdf577 LJ |
1681 | /** |
1682 | * ab8500_charger_usb_check_enable() - enable usb charging | |
1683 | * @charger: pointer to the ux500_charger structure | |
1684 | * @vset: charging voltage | |
1685 | * @iset: charger output current | |
1686 | * | |
1687 | * Check if the VBUS charger has been disconnected and reconnected without | |
1688 | * AB8500 rising an interrupt. Returns 0 on success. | |
1689 | */ | |
1690 | static int ab8500_charger_usb_check_enable(struct ux500_charger *charger, | |
1691 | int vset, int iset) | |
1692 | { | |
1693 | u8 usbch_ctrl1 = 0; | |
1694 | int ret = 0; | |
1695 | ||
1696 | struct ab8500_charger *di = to_ab8500_charger_usb_device_info(charger); | |
1697 | ||
1698 | if (!di->usb.charger_connected) | |
1699 | return ret; | |
1700 | ||
1701 | ret = abx500_get_register_interruptible(di->dev, AB8500_CHARGER, | |
1702 | AB8500_USBCH_CTRL1_REG, &usbch_ctrl1); | |
1703 | if (ret < 0) { | |
1704 | dev_err(di->dev, "ab8500 read failed %d\n", __LINE__); | |
1705 | return ret; | |
1706 | } | |
1707 | dev_dbg(di->dev, "USB charger ctrl: 0x%02x\n", usbch_ctrl1); | |
1708 | ||
1709 | if (!(usbch_ctrl1 & USB_CH_ENA)) { | |
1710 | dev_info(di->dev, "Charging has been disabled abnormally and will be re-enabled\n"); | |
1711 | ||
1712 | ret = abx500_mask_and_set_register_interruptible(di->dev, | |
1713 | AB8500_CHARGER, AB8500_CHARGER_CTRL, | |
1714 | DROP_COUNT_RESET, DROP_COUNT_RESET); | |
1715 | if (ret < 0) { | |
1716 | dev_err(di->dev, "ab8500 write failed %d\n", __LINE__); | |
1717 | return ret; | |
1718 | } | |
1719 | ||
1720 | ret = ab8500_charger_usb_en(&di->usb_chg, true, vset, iset); | |
1721 | if (ret < 0) { | |
1722 | dev_err(di->dev, "Failed to enable VBUS charger %d\n", | |
1723 | __LINE__); | |
1724 | return ret; | |
1725 | } | |
1726 | } | |
1727 | return ret; | |
1728 | } | |
1729 | ||
1730 | /** | |
1731 | * ab8500_charger_ac_check_enable() - enable usb charging | |
1732 | * @charger: pointer to the ux500_charger structure | |
1733 | * @vset: charging voltage | |
1734 | * @iset: charger output current | |
1735 | * | |
1736 | * Check if the AC charger has been disconnected and reconnected without | |
1737 | * AB8500 rising an interrupt. Returns 0 on success. | |
1738 | */ | |
1739 | static int ab8500_charger_ac_check_enable(struct ux500_charger *charger, | |
1740 | int vset, int iset) | |
1741 | { | |
1742 | u8 mainch_ctrl1 = 0; | |
1743 | int ret = 0; | |
1744 | ||
1745 | struct ab8500_charger *di = to_ab8500_charger_ac_device_info(charger); | |
1746 | ||
1747 | if (!di->ac.charger_connected) | |
1748 | return ret; | |
1749 | ||
1750 | ret = abx500_get_register_interruptible(di->dev, AB8500_CHARGER, | |
1751 | AB8500_MCH_CTRL1, &mainch_ctrl1); | |
1752 | if (ret < 0) { | |
1753 | dev_err(di->dev, "ab8500 read failed %d\n", __LINE__); | |
1754 | return ret; | |
1755 | } | |
1756 | dev_dbg(di->dev, "AC charger ctrl: 0x%02x\n", mainch_ctrl1); | |
1757 | ||
1758 | if (!(mainch_ctrl1 & MAIN_CH_ENA)) { | |
1759 | dev_info(di->dev, "Charging has been disabled abnormally and will be re-enabled\n"); | |
1760 | ||
1761 | ret = abx500_mask_and_set_register_interruptible(di->dev, | |
1762 | AB8500_CHARGER, AB8500_CHARGER_CTRL, | |
1763 | DROP_COUNT_RESET, DROP_COUNT_RESET); | |
1764 | ||
1765 | if (ret < 0) { | |
1766 | dev_err(di->dev, "ab8500 write failed %d\n", __LINE__); | |
1767 | return ret; | |
1768 | } | |
1769 | ||
1770 | ret = ab8500_charger_ac_en(&di->usb_chg, true, vset, iset); | |
1771 | if (ret < 0) { | |
1772 | dev_err(di->dev, "failed to enable AC charger %d\n", | |
1773 | __LINE__); | |
1774 | return ret; | |
1775 | } | |
1776 | } | |
1777 | return ret; | |
1778 | } | |
1779 | ||
84edbeea AM |
1780 | /** |
1781 | * ab8500_charger_watchdog_kick() - kick charger watchdog | |
1782 | * @di: pointer to the ab8500_charger structure | |
1783 | * | |
1784 | * Kick charger watchdog | |
1785 | * Returns error code in case of failure else 0(on success) | |
1786 | */ | |
1787 | static int ab8500_charger_watchdog_kick(struct ux500_charger *charger) | |
1788 | { | |
1789 | int ret; | |
1790 | struct ab8500_charger *di; | |
1791 | ||
1792 | if (charger->psy.type == POWER_SUPPLY_TYPE_MAINS) | |
1793 | di = to_ab8500_charger_ac_device_info(charger); | |
1794 | else if (charger->psy.type == POWER_SUPPLY_TYPE_USB) | |
1795 | di = to_ab8500_charger_usb_device_info(charger); | |
1796 | else | |
1797 | return -ENXIO; | |
1798 | ||
1799 | ret = abx500_set_register_interruptible(di->dev, AB8500_CHARGER, | |
1800 | AB8500_CHARG_WD_CTRL, CHARG_WD_KICK); | |
1801 | if (ret) | |
1802 | dev_err(di->dev, "Failed to kick WD!\n"); | |
1803 | ||
1804 | return ret; | |
1805 | } | |
1806 | ||
1807 | /** | |
1808 | * ab8500_charger_update_charger_current() - update charger current | |
1809 | * @di: pointer to the ab8500_charger structure | |
1810 | * | |
1811 | * Update the charger output current for the specified charger | |
1812 | * Returns error code in case of failure else 0(on success) | |
1813 | */ | |
1814 | static int ab8500_charger_update_charger_current(struct ux500_charger *charger, | |
1815 | int ich_out) | |
1816 | { | |
1817 | int ret; | |
84edbeea AM |
1818 | struct ab8500_charger *di; |
1819 | ||
1820 | if (charger->psy.type == POWER_SUPPLY_TYPE_MAINS) | |
1821 | di = to_ab8500_charger_ac_device_info(charger); | |
1822 | else if (charger->psy.type == POWER_SUPPLY_TYPE_USB) | |
1823 | di = to_ab8500_charger_usb_device_info(charger); | |
1824 | else | |
1825 | return -ENXIO; | |
1826 | ||
f8e96dff | 1827 | ret = ab8500_charger_set_output_curr(di, ich_out); |
84edbeea | 1828 | if (ret) { |
f8e96dff JB |
1829 | dev_err(di->dev, "%s " |
1830 | "Failed to set ChOutputCurentLevel\n", | |
1831 | __func__); | |
84edbeea AM |
1832 | return ret; |
1833 | } | |
1834 | ||
1835 | /* Reset the main and usb drop input current measurement counter */ | |
1836 | ret = abx500_set_register_interruptible(di->dev, AB8500_CHARGER, | |
4dcdf577 | 1837 | AB8500_CHARGER_CTRL, DROP_COUNT_RESET); |
84edbeea AM |
1838 | if (ret) { |
1839 | dev_err(di->dev, "%s write failed\n", __func__); | |
1840 | return ret; | |
1841 | } | |
1842 | ||
1843 | return ret; | |
1844 | } | |
1845 | ||
1846 | static int ab8500_charger_get_ext_psy_data(struct device *dev, void *data) | |
1847 | { | |
1848 | struct power_supply *psy; | |
1849 | struct power_supply *ext; | |
1850 | struct ab8500_charger *di; | |
1851 | union power_supply_propval ret; | |
1852 | int i, j; | |
1853 | bool psy_found = false; | |
1854 | struct ux500_charger *usb_chg; | |
1855 | ||
1856 | usb_chg = (struct ux500_charger *)data; | |
1857 | psy = &usb_chg->psy; | |
1858 | ||
1859 | di = to_ab8500_charger_usb_device_info(usb_chg); | |
1860 | ||
1861 | ext = dev_get_drvdata(dev); | |
1862 | ||
1863 | /* For all psy where the driver name appears in any supplied_to */ | |
1864 | for (i = 0; i < ext->num_supplicants; i++) { | |
1865 | if (!strcmp(ext->supplied_to[i], psy->name)) | |
1866 | psy_found = true; | |
1867 | } | |
1868 | ||
1869 | if (!psy_found) | |
1870 | return 0; | |
1871 | ||
1872 | /* Go through all properties for the psy */ | |
1873 | for (j = 0; j < ext->num_properties; j++) { | |
1874 | enum power_supply_property prop; | |
1875 | prop = ext->properties[j]; | |
1876 | ||
1877 | if (ext->get_property(ext, prop, &ret)) | |
1878 | continue; | |
1879 | ||
1880 | switch (prop) { | |
1881 | case POWER_SUPPLY_PROP_VOLTAGE_NOW: | |
1882 | switch (ext->type) { | |
1883 | case POWER_SUPPLY_TYPE_BATTERY: | |
1884 | di->vbat = ret.intval / 1000; | |
1885 | break; | |
1886 | default: | |
1887 | break; | |
1888 | } | |
1889 | break; | |
1890 | default: | |
1891 | break; | |
1892 | } | |
1893 | } | |
1894 | return 0; | |
1895 | } | |
1896 | ||
1897 | /** | |
1898 | * ab8500_charger_check_vbat_work() - keep vbus current within spec | |
1899 | * @work pointer to the work_struct structure | |
1900 | * | |
1901 | * Due to a asic bug it is necessary to lower the input current to the vbus | |
1902 | * charger when charging with at some specific levels. This issue is only valid | |
1903 | * for below a certain battery voltage. This function makes sure that the | |
1904 | * the allowed current limit isn't exceeded. | |
1905 | */ | |
1906 | static void ab8500_charger_check_vbat_work(struct work_struct *work) | |
1907 | { | |
1908 | int t = 10; | |
1909 | struct ab8500_charger *di = container_of(work, | |
1910 | struct ab8500_charger, check_vbat_work.work); | |
1911 | ||
1912 | class_for_each_device(power_supply_class, NULL, | |
1913 | &di->usb_chg.psy, ab8500_charger_get_ext_psy_data); | |
1914 | ||
1915 | /* First run old_vbat is 0. */ | |
1916 | if (di->old_vbat == 0) | |
1917 | di->old_vbat = di->vbat; | |
1918 | ||
1919 | if (!((di->old_vbat <= VBAT_TRESH_IP_CUR_RED && | |
1920 | di->vbat <= VBAT_TRESH_IP_CUR_RED) || | |
1921 | (di->old_vbat > VBAT_TRESH_IP_CUR_RED && | |
1922 | di->vbat > VBAT_TRESH_IP_CUR_RED))) { | |
1923 | ||
1924 | dev_dbg(di->dev, "Vbat did cross threshold, curr: %d, new: %d," | |
1925 | " old: %d\n", di->max_usb_in_curr, di->vbat, | |
1926 | di->old_vbat); | |
1927 | ab8500_charger_set_vbus_in_curr(di, di->max_usb_in_curr); | |
1928 | power_supply_changed(&di->usb_chg.psy); | |
1929 | } | |
1930 | ||
1931 | di->old_vbat = di->vbat; | |
1932 | ||
1933 | /* | |
1934 | * No need to check the battery voltage every second when not close to | |
1935 | * the threshold. | |
1936 | */ | |
1937 | if (di->vbat < (VBAT_TRESH_IP_CUR_RED + 100) && | |
1938 | (di->vbat > (VBAT_TRESH_IP_CUR_RED - 100))) | |
1939 | t = 1; | |
1940 | ||
1941 | queue_delayed_work(di->charger_wq, &di->check_vbat_work, t * HZ); | |
1942 | } | |
1943 | ||
1944 | /** | |
1945 | * ab8500_charger_check_hw_failure_work() - check main charger failure | |
1946 | * @work: pointer to the work_struct structure | |
1947 | * | |
1948 | * Work queue function for checking the main charger status | |
1949 | */ | |
1950 | static void ab8500_charger_check_hw_failure_work(struct work_struct *work) | |
1951 | { | |
1952 | int ret; | |
1953 | u8 reg_value; | |
1954 | ||
1955 | struct ab8500_charger *di = container_of(work, | |
1956 | struct ab8500_charger, check_hw_failure_work.work); | |
1957 | ||
1958 | /* Check if the status bits for HW failure is still active */ | |
1959 | if (di->flags.mainextchnotok) { | |
1960 | ret = abx500_get_register_interruptible(di->dev, | |
1961 | AB8500_CHARGER, AB8500_CH_STATUS2_REG, ®_value); | |
1962 | if (ret < 0) { | |
1963 | dev_err(di->dev, "%s ab8500 read failed\n", __func__); | |
1964 | return; | |
1965 | } | |
1966 | if (!(reg_value & MAIN_CH_NOK)) { | |
1967 | di->flags.mainextchnotok = false; | |
1968 | ab8500_power_supply_changed(di, &di->ac_chg.psy); | |
1969 | } | |
1970 | } | |
1971 | if (di->flags.vbus_ovv) { | |
1972 | ret = abx500_get_register_interruptible(di->dev, | |
1973 | AB8500_CHARGER, AB8500_CH_USBCH_STAT2_REG, | |
1974 | ®_value); | |
1975 | if (ret < 0) { | |
1976 | dev_err(di->dev, "%s ab8500 read failed\n", __func__); | |
1977 | return; | |
1978 | } | |
1979 | if (!(reg_value & VBUS_OVV_TH)) { | |
1980 | di->flags.vbus_ovv = false; | |
1981 | ab8500_power_supply_changed(di, &di->usb_chg.psy); | |
1982 | } | |
1983 | } | |
1984 | /* If we still have a failure, schedule a new check */ | |
1985 | if (di->flags.mainextchnotok || di->flags.vbus_ovv) { | |
1986 | queue_delayed_work(di->charger_wq, | |
1987 | &di->check_hw_failure_work, round_jiffies(HZ)); | |
1988 | } | |
1989 | } | |
1990 | ||
1991 | /** | |
1992 | * ab8500_charger_kick_watchdog_work() - kick the watchdog | |
1993 | * @work: pointer to the work_struct structure | |
1994 | * | |
1995 | * Work queue function for kicking the charger watchdog. | |
1996 | * | |
1997 | * For ABB revision 1.0 and 1.1 there is a bug in the watchdog | |
1998 | * logic. That means we have to continously kick the charger | |
1999 | * watchdog even when no charger is connected. This is only | |
2000 | * valid once the AC charger has been enabled. This is | |
2001 | * a bug that is not handled by the algorithm and the | |
2002 | * watchdog have to be kicked by the charger driver | |
2003 | * when the AC charger is disabled | |
2004 | */ | |
2005 | static void ab8500_charger_kick_watchdog_work(struct work_struct *work) | |
2006 | { | |
2007 | int ret; | |
2008 | ||
2009 | struct ab8500_charger *di = container_of(work, | |
2010 | struct ab8500_charger, kick_wd_work.work); | |
2011 | ||
2012 | ret = abx500_set_register_interruptible(di->dev, AB8500_CHARGER, | |
2013 | AB8500_CHARG_WD_CTRL, CHARG_WD_KICK); | |
2014 | if (ret) | |
2015 | dev_err(di->dev, "Failed to kick WD!\n"); | |
2016 | ||
2017 | /* Schedule a new watchdog kick */ | |
2018 | queue_delayed_work(di->charger_wq, | |
2019 | &di->kick_wd_work, round_jiffies(WD_KICK_INTERVAL)); | |
2020 | } | |
2021 | ||
2022 | /** | |
2023 | * ab8500_charger_ac_work() - work to get and set main charger status | |
2024 | * @work: pointer to the work_struct structure | |
2025 | * | |
2026 | * Work queue function for checking the main charger status | |
2027 | */ | |
2028 | static void ab8500_charger_ac_work(struct work_struct *work) | |
2029 | { | |
2030 | int ret; | |
2031 | ||
2032 | struct ab8500_charger *di = container_of(work, | |
2033 | struct ab8500_charger, ac_work); | |
2034 | ||
2035 | /* | |
2036 | * Since we can't be sure that the events are received | |
2037 | * synchronously, we have the check if the main charger is | |
2038 | * connected by reading the status register | |
2039 | */ | |
34c11a70 | 2040 | ret = ab8500_charger_detect_chargers(di, false); |
84edbeea AM |
2041 | if (ret < 0) |
2042 | return; | |
2043 | ||
2044 | if (ret & AC_PW_CONN) { | |
2045 | di->ac.charger_connected = 1; | |
2046 | di->ac_conn = true; | |
2047 | } else { | |
2048 | di->ac.charger_connected = 0; | |
2049 | } | |
2050 | ||
2051 | ab8500_power_supply_changed(di, &di->ac_chg.psy); | |
2052 | sysfs_notify(&di->ac_chg.psy.dev->kobj, NULL, "present"); | |
2053 | } | |
2054 | ||
b269fff4 LJ |
2055 | static void ab8500_charger_usb_attached_work(struct work_struct *work) |
2056 | { | |
2057 | struct ab8500_charger *di = container_of(work, | |
2058 | struct ab8500_charger, | |
2059 | usb_charger_attached_work.work); | |
2060 | int usbch = (USB_CH_VBUSDROP | USB_CH_VBUSDETDBNC); | |
2061 | int ret, i; | |
2062 | u8 statval; | |
2063 | ||
2064 | for (i = 0; i < 10; i++) { | |
2065 | ret = abx500_get_register_interruptible(di->dev, | |
2066 | AB8500_CHARGER, | |
2067 | AB8500_CH_USBCH_STAT1_REG, | |
2068 | &statval); | |
2069 | if (ret < 0) { | |
2070 | dev_err(di->dev, "ab8500 read failed %d\n", __LINE__); | |
2071 | goto reschedule; | |
2072 | } | |
2073 | if ((statval & usbch) != usbch) | |
2074 | goto reschedule; | |
2075 | ||
2076 | msleep(CHARGER_STATUS_POLL); | |
2077 | } | |
2078 | ||
2079 | ab8500_charger_usb_en(&di->usb_chg, 0, 0, 0); | |
2080 | ||
2081 | mutex_lock(&di->charger_attached_mutex); | |
2082 | mutex_unlock(&di->charger_attached_mutex); | |
2083 | ||
2084 | return; | |
2085 | ||
2086 | reschedule: | |
2087 | queue_delayed_work(di->charger_wq, | |
2088 | &di->usb_charger_attached_work, | |
2089 | HZ); | |
2090 | } | |
2091 | ||
2092 | static void ab8500_charger_ac_attached_work(struct work_struct *work) | |
2093 | { | |
2094 | ||
2095 | struct ab8500_charger *di = container_of(work, | |
2096 | struct ab8500_charger, | |
2097 | ac_charger_attached_work.work); | |
2098 | int mainch = (MAIN_CH_STATUS2_MAINCHGDROP | | |
2099 | MAIN_CH_STATUS2_MAINCHARGERDETDBNC); | |
2100 | int ret, i; | |
2101 | u8 statval; | |
2102 | ||
2103 | for (i = 0; i < 10; i++) { | |
2104 | ret = abx500_get_register_interruptible(di->dev, | |
2105 | AB8500_CHARGER, | |
2106 | AB8500_CH_STATUS2_REG, | |
2107 | &statval); | |
2108 | if (ret < 0) { | |
2109 | dev_err(di->dev, "ab8500 read failed %d\n", __LINE__); | |
2110 | goto reschedule; | |
2111 | } | |
2112 | ||
2113 | if ((statval & mainch) != mainch) | |
2114 | goto reschedule; | |
2115 | ||
2116 | msleep(CHARGER_STATUS_POLL); | |
2117 | } | |
2118 | ||
2119 | ab8500_charger_ac_en(&di->ac_chg, 0, 0, 0); | |
2120 | queue_work(di->charger_wq, &di->ac_work); | |
2121 | ||
2122 | mutex_lock(&di->charger_attached_mutex); | |
2123 | mutex_unlock(&di->charger_attached_mutex); | |
2124 | ||
2125 | return; | |
2126 | ||
2127 | reschedule: | |
2128 | queue_delayed_work(di->charger_wq, | |
2129 | &di->ac_charger_attached_work, | |
2130 | HZ); | |
2131 | } | |
2132 | ||
84edbeea AM |
2133 | /** |
2134 | * ab8500_charger_detect_usb_type_work() - work to detect USB type | |
2135 | * @work: Pointer to the work_struct structure | |
2136 | * | |
2137 | * Detect the type of USB plugged | |
2138 | */ | |
64eb9b02 | 2139 | static void ab8500_charger_detect_usb_type_work(struct work_struct *work) |
84edbeea AM |
2140 | { |
2141 | int ret; | |
2142 | ||
2143 | struct ab8500_charger *di = container_of(work, | |
2144 | struct ab8500_charger, detect_usb_type_work); | |
2145 | ||
2146 | /* | |
2147 | * Since we can't be sure that the events are received | |
2148 | * synchronously, we have the check if is | |
2149 | * connected by reading the status register | |
2150 | */ | |
34c11a70 | 2151 | ret = ab8500_charger_detect_chargers(di, false); |
84edbeea AM |
2152 | if (ret < 0) |
2153 | return; | |
2154 | ||
2155 | if (!(ret & USB_PW_CONN)) { | |
34c11a70 POH |
2156 | dev_dbg(di->dev, "%s di->vbus_detected = false\n", __func__); |
2157 | di->vbus_detected = false; | |
84edbeea AM |
2158 | ab8500_charger_set_usb_connected(di, false); |
2159 | ab8500_power_supply_changed(di, &di->usb_chg.psy); | |
2160 | } else { | |
34c11a70 POH |
2161 | dev_dbg(di->dev, "%s di->vbus_detected = true\n", __func__); |
2162 | di->vbus_detected = true; | |
84edbeea AM |
2163 | |
2164 | if (is_ab8500_1p1_or_earlier(di->parent)) { | |
2165 | ret = ab8500_charger_detect_usb_type(di); | |
2166 | if (!ret) { | |
2167 | ab8500_charger_set_usb_connected(di, true); | |
2168 | ab8500_power_supply_changed(di, | |
2169 | &di->usb_chg.psy); | |
2170 | } | |
2171 | } else { | |
34c11a70 POH |
2172 | /* |
2173 | * For ABB cut2.0 and onwards we have an IRQ, | |
84edbeea AM |
2174 | * USB_LINK_STATUS that will be triggered when the USB |
2175 | * link status changes. The exception is USB connected | |
2176 | * during startup. Then we don't get a | |
2177 | * USB_LINK_STATUS IRQ | |
2178 | */ | |
2179 | if (di->vbus_detected_start) { | |
2180 | di->vbus_detected_start = false; | |
2181 | ret = ab8500_charger_detect_usb_type(di); | |
2182 | if (!ret) { | |
2183 | ab8500_charger_set_usb_connected(di, | |
2184 | true); | |
2185 | ab8500_power_supply_changed(di, | |
2186 | &di->usb_chg.psy); | |
2187 | } | |
2188 | } | |
2189 | } | |
2190 | } | |
2191 | } | |
2192 | ||
4b45f4a9 | 2193 | /** |
34c11a70 | 2194 | * ab8500_charger_usb_link_attach_work() - work to detect USB type |
4b45f4a9 MC |
2195 | * @work: pointer to the work_struct structure |
2196 | * | |
2197 | * Detect the type of USB plugged | |
2198 | */ | |
2199 | static void ab8500_charger_usb_link_attach_work(struct work_struct *work) | |
2200 | { | |
2201 | struct ab8500_charger *di = | |
2202 | container_of(work, struct ab8500_charger, attach_work.work); | |
2203 | int ret; | |
2204 | ||
2205 | /* Update maximum input current if USB enumeration is not detected */ | |
2206 | if (!di->usb.charger_online) { | |
2207 | ret = ab8500_charger_set_vbus_in_curr(di, di->max_usb_in_curr); | |
2208 | if (ret) | |
2209 | return; | |
2210 | } | |
2211 | ||
2212 | ab8500_charger_set_usb_connected(di, true); | |
2213 | ab8500_power_supply_changed(di, &di->usb_chg.psy); | |
2214 | } | |
2215 | ||
84edbeea AM |
2216 | /** |
2217 | * ab8500_charger_usb_link_status_work() - work to detect USB type | |
2218 | * @work: pointer to the work_struct structure | |
2219 | * | |
2220 | * Detect the type of USB plugged | |
2221 | */ | |
2222 | static void ab8500_charger_usb_link_status_work(struct work_struct *work) | |
2223 | { | |
ff38090a | 2224 | int detected_chargers; |
84edbeea | 2225 | int ret; |
ff38090a | 2226 | u8 val; |
84edbeea AM |
2227 | |
2228 | struct ab8500_charger *di = container_of(work, | |
2229 | struct ab8500_charger, usb_link_status_work); | |
2230 | ||
2231 | /* | |
2232 | * Since we can't be sure that the events are received | |
2233 | * synchronously, we have the check if is | |
2234 | * connected by reading the status register | |
2235 | */ | |
34c11a70 | 2236 | detected_chargers = ab8500_charger_detect_chargers(di, false); |
ff38090a | 2237 | if (detected_chargers < 0) |
84edbeea AM |
2238 | return; |
2239 | ||
ff38090a HS |
2240 | /* |
2241 | * Some chargers that breaks the USB spec is | |
2242 | * identified as invalid by AB8500 and it refuse | |
2243 | * to start the charging process. but by jumping | |
2244 | * thru a few hoops it can be forced to start. | |
2245 | */ | |
2246 | ret = abx500_get_register_interruptible(di->dev, AB8500_USB, | |
2247 | AB8500_USB_LINE_STAT_REG, &val); | |
2248 | if (ret >= 0) | |
2249 | dev_dbg(di->dev, "UsbLineStatus register = 0x%02x\n", val); | |
2250 | else | |
2251 | dev_dbg(di->dev, "Error reading USB link status\n"); | |
2252 | ||
2253 | if (detected_chargers & USB_PW_CONN) { | |
2254 | if (((val & AB8500_USB_LINK_STATUS) >> 3) == USB_STAT_NOT_VALID_LINK && | |
2255 | di->invalid_charger_detect_state == 0) { | |
2256 | dev_dbg(di->dev, "Invalid charger detected, state= 0\n"); | |
2257 | /*Enable charger*/ | |
2258 | abx500_mask_and_set_register_interruptible(di->dev, | |
2259 | AB8500_CHARGER, AB8500_USBCH_CTRL1_REG, 0x01, 0x01); | |
2260 | /*Enable charger detection*/ | |
2261 | abx500_mask_and_set_register_interruptible(di->dev, AB8500_USB, | |
2262 | AB8500_MCH_IPT_CURLVL_REG, 0x01, 0x01); | |
2263 | di->invalid_charger_detect_state = 1; | |
2264 | /*exit and wait for new link status interrupt.*/ | |
2265 | return; | |
2266 | ||
2267 | } | |
2268 | if (di->invalid_charger_detect_state == 1) { | |
2269 | dev_dbg(di->dev, "Invalid charger detected, state= 1\n"); | |
2270 | /*Stop charger detection*/ | |
2271 | abx500_mask_and_set_register_interruptible(di->dev, AB8500_USB, | |
2272 | AB8500_MCH_IPT_CURLVL_REG, 0x01, 0x00); | |
2273 | /*Check link status*/ | |
2274 | ret = abx500_get_register_interruptible(di->dev, AB8500_USB, | |
2275 | AB8500_USB_LINE_STAT_REG, &val); | |
2276 | dev_dbg(di->dev, "USB link status= 0x%02x\n", | |
2277 | (val & AB8500_USB_LINK_STATUS) >> 3); | |
2278 | di->invalid_charger_detect_state = 2; | |
2279 | } | |
2280 | } else { | |
2281 | di->invalid_charger_detect_state = 0; | |
2282 | } | |
2283 | ||
2284 | if (!(detected_chargers & USB_PW_CONN)) { | |
34c11a70 | 2285 | di->vbus_detected = false; |
84edbeea AM |
2286 | ab8500_charger_set_usb_connected(di, false); |
2287 | ab8500_power_supply_changed(di, &di->usb_chg.psy); | |
4b45f4a9 MC |
2288 | return; |
2289 | } | |
84edbeea | 2290 | |
34c11a70 POH |
2291 | dev_dbg(di->dev,"%s di->vbus_detected = true\n",__func__); |
2292 | di->vbus_detected = true; | |
4b45f4a9 | 2293 | ret = ab8500_charger_read_usb_type(di); |
34c11a70 POH |
2294 | if (ret) { |
2295 | if (ret == -ENXIO) { | |
2296 | /* No valid charger type detected */ | |
2297 | ab8500_charger_set_usb_connected(di, false); | |
2298 | ab8500_power_supply_changed(di, &di->usb_chg.psy); | |
84edbeea | 2299 | } |
34c11a70 POH |
2300 | return; |
2301 | } | |
2302 | ||
2303 | if (di->usb_device_is_unrecognised) { | |
2304 | dev_dbg(di->dev, | |
2305 | "Potential Legacy Charger device. " | |
2306 | "Delay work for %d msec for USB enum " | |
2307 | "to finish", | |
2308 | WAIT_ACA_RID_ENUMERATION); | |
2309 | queue_delayed_work(di->charger_wq, | |
2310 | &di->attach_work, | |
2311 | msecs_to_jiffies(WAIT_ACA_RID_ENUMERATION)); | |
2312 | } else if (di->is_aca_rid == 1) { | |
2313 | /* Only wait once */ | |
2314 | di->is_aca_rid++; | |
2315 | dev_dbg(di->dev, | |
2316 | "%s Wait %d msec for USB enum to finish", | |
2317 | __func__, WAIT_ACA_RID_ENUMERATION); | |
2318 | queue_delayed_work(di->charger_wq, | |
2319 | &di->attach_work, | |
2320 | msecs_to_jiffies(WAIT_ACA_RID_ENUMERATION)); | |
2321 | } else { | |
2322 | queue_delayed_work(di->charger_wq, | |
2323 | &di->attach_work, | |
2324 | 0); | |
84edbeea AM |
2325 | } |
2326 | } | |
2327 | ||
2328 | static void ab8500_charger_usb_state_changed_work(struct work_struct *work) | |
2329 | { | |
2330 | int ret; | |
2331 | unsigned long flags; | |
2332 | ||
2333 | struct ab8500_charger *di = container_of(work, | |
34c11a70 | 2334 | struct ab8500_charger, usb_state_changed_work.work); |
84edbeea | 2335 | |
34c11a70 POH |
2336 | if (!di->vbus_detected) { |
2337 | dev_dbg(di->dev, | |
2338 | "%s !di->vbus_detected\n", | |
2339 | __func__); | |
84edbeea | 2340 | return; |
34c11a70 | 2341 | } |
84edbeea AM |
2342 | |
2343 | spin_lock_irqsave(&di->usb_state.usb_lock, flags); | |
34c11a70 POH |
2344 | di->usb_state.state = di->usb_state.state_tmp; |
2345 | di->usb_state.usb_current = di->usb_state.usb_current_tmp; | |
84edbeea AM |
2346 | spin_unlock_irqrestore(&di->usb_state.usb_lock, flags); |
2347 | ||
84edbeea AM |
2348 | dev_dbg(di->dev, "%s USB state: 0x%02x mA: %d\n", |
2349 | __func__, di->usb_state.state, di->usb_state.usb_current); | |
2350 | ||
2351 | switch (di->usb_state.state) { | |
2352 | case AB8500_BM_USB_STATE_RESET_HS: | |
2353 | case AB8500_BM_USB_STATE_RESET_FS: | |
2354 | case AB8500_BM_USB_STATE_SUSPEND: | |
2355 | case AB8500_BM_USB_STATE_MAX: | |
2356 | ab8500_charger_set_usb_connected(di, false); | |
2357 | ab8500_power_supply_changed(di, &di->usb_chg.psy); | |
2358 | break; | |
2359 | ||
2360 | case AB8500_BM_USB_STATE_RESUME: | |
2361 | /* | |
2362 | * when suspend->resume there should be delay | |
2363 | * of 1sec for enabling charging | |
2364 | */ | |
2365 | msleep(1000); | |
2366 | /* Intentional fall through */ | |
2367 | case AB8500_BM_USB_STATE_CONFIGURED: | |
2368 | /* | |
2369 | * USB is configured, enable charging with the charging | |
2370 | * input current obtained from USB driver | |
2371 | */ | |
2372 | if (!ab8500_charger_get_usb_cur(di)) { | |
2373 | /* Update maximum input current */ | |
2374 | ret = ab8500_charger_set_vbus_in_curr(di, | |
2375 | di->max_usb_in_curr); | |
2376 | if (ret) | |
2377 | return; | |
2378 | ||
2379 | ab8500_charger_set_usb_connected(di, true); | |
2380 | ab8500_power_supply_changed(di, &di->usb_chg.psy); | |
2381 | } | |
2382 | break; | |
2383 | ||
2384 | default: | |
2385 | break; | |
2386 | }; | |
2387 | } | |
2388 | ||
2389 | /** | |
2390 | * ab8500_charger_check_usbchargernotok_work() - check USB chg not ok status | |
2391 | * @work: pointer to the work_struct structure | |
2392 | * | |
2393 | * Work queue function for checking the USB charger Not OK status | |
2394 | */ | |
2395 | static void ab8500_charger_check_usbchargernotok_work(struct work_struct *work) | |
2396 | { | |
2397 | int ret; | |
2398 | u8 reg_value; | |
2399 | bool prev_status; | |
2400 | ||
2401 | struct ab8500_charger *di = container_of(work, | |
2402 | struct ab8500_charger, check_usbchgnotok_work.work); | |
2403 | ||
2404 | /* Check if the status bit for usbchargernotok is still active */ | |
2405 | ret = abx500_get_register_interruptible(di->dev, | |
2406 | AB8500_CHARGER, AB8500_CH_USBCH_STAT2_REG, ®_value); | |
2407 | if (ret < 0) { | |
2408 | dev_err(di->dev, "%s ab8500 read failed\n", __func__); | |
2409 | return; | |
2410 | } | |
2411 | prev_status = di->flags.usbchargernotok; | |
2412 | ||
2413 | if (reg_value & VBUS_CH_NOK) { | |
2414 | di->flags.usbchargernotok = true; | |
2415 | /* Check again in 1sec */ | |
2416 | queue_delayed_work(di->charger_wq, | |
2417 | &di->check_usbchgnotok_work, HZ); | |
2418 | } else { | |
2419 | di->flags.usbchargernotok = false; | |
2420 | di->flags.vbus_collapse = false; | |
2421 | } | |
2422 | ||
2423 | if (prev_status != di->flags.usbchargernotok) | |
2424 | ab8500_power_supply_changed(di, &di->usb_chg.psy); | |
2425 | } | |
2426 | ||
2427 | /** | |
2428 | * ab8500_charger_check_main_thermal_prot_work() - check main thermal status | |
2429 | * @work: pointer to the work_struct structure | |
2430 | * | |
2431 | * Work queue function for checking the Main thermal prot status | |
2432 | */ | |
2433 | static void ab8500_charger_check_main_thermal_prot_work( | |
2434 | struct work_struct *work) | |
2435 | { | |
2436 | int ret; | |
2437 | u8 reg_value; | |
2438 | ||
2439 | struct ab8500_charger *di = container_of(work, | |
2440 | struct ab8500_charger, check_main_thermal_prot_work); | |
2441 | ||
2442 | /* Check if the status bit for main_thermal_prot is still active */ | |
2443 | ret = abx500_get_register_interruptible(di->dev, | |
2444 | AB8500_CHARGER, AB8500_CH_STATUS2_REG, ®_value); | |
2445 | if (ret < 0) { | |
2446 | dev_err(di->dev, "%s ab8500 read failed\n", __func__); | |
2447 | return; | |
2448 | } | |
2449 | if (reg_value & MAIN_CH_TH_PROT) | |
2450 | di->flags.main_thermal_prot = true; | |
2451 | else | |
2452 | di->flags.main_thermal_prot = false; | |
2453 | ||
2454 | ab8500_power_supply_changed(di, &di->ac_chg.psy); | |
2455 | } | |
2456 | ||
2457 | /** | |
2458 | * ab8500_charger_check_usb_thermal_prot_work() - check usb thermal status | |
2459 | * @work: pointer to the work_struct structure | |
2460 | * | |
2461 | * Work queue function for checking the USB thermal prot status | |
2462 | */ | |
2463 | static void ab8500_charger_check_usb_thermal_prot_work( | |
2464 | struct work_struct *work) | |
2465 | { | |
2466 | int ret; | |
2467 | u8 reg_value; | |
2468 | ||
2469 | struct ab8500_charger *di = container_of(work, | |
2470 | struct ab8500_charger, check_usb_thermal_prot_work); | |
2471 | ||
2472 | /* Check if the status bit for usb_thermal_prot is still active */ | |
2473 | ret = abx500_get_register_interruptible(di->dev, | |
2474 | AB8500_CHARGER, AB8500_CH_USBCH_STAT2_REG, ®_value); | |
2475 | if (ret < 0) { | |
2476 | dev_err(di->dev, "%s ab8500 read failed\n", __func__); | |
2477 | return; | |
2478 | } | |
2479 | if (reg_value & USB_CH_TH_PROT) | |
2480 | di->flags.usb_thermal_prot = true; | |
2481 | else | |
2482 | di->flags.usb_thermal_prot = false; | |
2483 | ||
2484 | ab8500_power_supply_changed(di, &di->usb_chg.psy); | |
2485 | } | |
2486 | ||
2487 | /** | |
2488 | * ab8500_charger_mainchunplugdet_handler() - main charger unplugged | |
2489 | * @irq: interrupt number | |
2490 | * @_di: pointer to the ab8500_charger structure | |
2491 | * | |
2492 | * Returns IRQ status(IRQ_HANDLED) | |
2493 | */ | |
2494 | static irqreturn_t ab8500_charger_mainchunplugdet_handler(int irq, void *_di) | |
2495 | { | |
2496 | struct ab8500_charger *di = _di; | |
2497 | ||
2498 | dev_dbg(di->dev, "Main charger unplugged\n"); | |
2499 | queue_work(di->charger_wq, &di->ac_work); | |
2500 | ||
b269fff4 LJ |
2501 | cancel_delayed_work_sync(&di->ac_charger_attached_work); |
2502 | mutex_lock(&di->charger_attached_mutex); | |
2503 | mutex_unlock(&di->charger_attached_mutex); | |
2504 | ||
84edbeea AM |
2505 | return IRQ_HANDLED; |
2506 | } | |
2507 | ||
2508 | /** | |
2509 | * ab8500_charger_mainchplugdet_handler() - main charger plugged | |
2510 | * @irq: interrupt number | |
2511 | * @_di: pointer to the ab8500_charger structure | |
2512 | * | |
2513 | * Returns IRQ status(IRQ_HANDLED) | |
2514 | */ | |
2515 | static irqreturn_t ab8500_charger_mainchplugdet_handler(int irq, void *_di) | |
2516 | { | |
2517 | struct ab8500_charger *di = _di; | |
2518 | ||
2519 | dev_dbg(di->dev, "Main charger plugged\n"); | |
2520 | queue_work(di->charger_wq, &di->ac_work); | |
2521 | ||
b269fff4 LJ |
2522 | mutex_lock(&di->charger_attached_mutex); |
2523 | mutex_unlock(&di->charger_attached_mutex); | |
2524 | queue_delayed_work(di->charger_wq, | |
2525 | &di->ac_charger_attached_work, | |
2526 | HZ); | |
84edbeea AM |
2527 | return IRQ_HANDLED; |
2528 | } | |
2529 | ||
2530 | /** | |
2531 | * ab8500_charger_mainextchnotok_handler() - main charger not ok | |
2532 | * @irq: interrupt number | |
2533 | * @_di: pointer to the ab8500_charger structure | |
2534 | * | |
2535 | * Returns IRQ status(IRQ_HANDLED) | |
2536 | */ | |
2537 | static irqreturn_t ab8500_charger_mainextchnotok_handler(int irq, void *_di) | |
2538 | { | |
2539 | struct ab8500_charger *di = _di; | |
2540 | ||
2541 | dev_dbg(di->dev, "Main charger not ok\n"); | |
2542 | di->flags.mainextchnotok = true; | |
2543 | ab8500_power_supply_changed(di, &di->ac_chg.psy); | |
2544 | ||
2545 | /* Schedule a new HW failure check */ | |
2546 | queue_delayed_work(di->charger_wq, &di->check_hw_failure_work, 0); | |
2547 | ||
2548 | return IRQ_HANDLED; | |
2549 | } | |
2550 | ||
2551 | /** | |
2552 | * ab8500_charger_mainchthprotr_handler() - Die temp is above main charger | |
2553 | * thermal protection threshold | |
2554 | * @irq: interrupt number | |
2555 | * @_di: pointer to the ab8500_charger structure | |
2556 | * | |
2557 | * Returns IRQ status(IRQ_HANDLED) | |
2558 | */ | |
2559 | static irqreturn_t ab8500_charger_mainchthprotr_handler(int irq, void *_di) | |
2560 | { | |
2561 | struct ab8500_charger *di = _di; | |
2562 | ||
2563 | dev_dbg(di->dev, | |
2564 | "Die temp above Main charger thermal protection threshold\n"); | |
2565 | queue_work(di->charger_wq, &di->check_main_thermal_prot_work); | |
2566 | ||
2567 | return IRQ_HANDLED; | |
2568 | } | |
2569 | ||
2570 | /** | |
2571 | * ab8500_charger_mainchthprotf_handler() - Die temp is below main charger | |
2572 | * thermal protection threshold | |
2573 | * @irq: interrupt number | |
2574 | * @_di: pointer to the ab8500_charger structure | |
2575 | * | |
2576 | * Returns IRQ status(IRQ_HANDLED) | |
2577 | */ | |
2578 | static irqreturn_t ab8500_charger_mainchthprotf_handler(int irq, void *_di) | |
2579 | { | |
2580 | struct ab8500_charger *di = _di; | |
2581 | ||
2582 | dev_dbg(di->dev, | |
2583 | "Die temp ok for Main charger thermal protection threshold\n"); | |
2584 | queue_work(di->charger_wq, &di->check_main_thermal_prot_work); | |
2585 | ||
2586 | return IRQ_HANDLED; | |
2587 | } | |
2588 | ||
34c11a70 POH |
2589 | static void ab8500_charger_vbus_drop_end_work(struct work_struct *work) |
2590 | { | |
2591 | struct ab8500_charger *di = container_of(work, | |
2592 | struct ab8500_charger, vbus_drop_end_work.work); | |
2593 | ||
2594 | di->flags.vbus_drop_end = false; | |
2595 | ||
2596 | /* Reset the drop counter */ | |
2597 | abx500_set_register_interruptible(di->dev, | |
2598 | AB8500_CHARGER, AB8500_CHARGER_CTRL, 0x01); | |
2599 | ||
2600 | if (di->usb.charger_connected) | |
2601 | ab8500_charger_set_vbus_in_curr(di, di->max_usb_in_curr); | |
2602 | } | |
2603 | ||
84edbeea AM |
2604 | /** |
2605 | * ab8500_charger_vbusdetf_handler() - VBUS falling detected | |
2606 | * @irq: interrupt number | |
2607 | * @_di: pointer to the ab8500_charger structure | |
2608 | * | |
2609 | * Returns IRQ status(IRQ_HANDLED) | |
2610 | */ | |
2611 | static irqreturn_t ab8500_charger_vbusdetf_handler(int irq, void *_di) | |
2612 | { | |
2613 | struct ab8500_charger *di = _di; | |
2614 | ||
34c11a70 | 2615 | di->vbus_detected = false; |
84edbeea AM |
2616 | dev_dbg(di->dev, "VBUS falling detected\n"); |
2617 | queue_work(di->charger_wq, &di->detect_usb_type_work); | |
2618 | ||
2619 | return IRQ_HANDLED; | |
2620 | } | |
2621 | ||
2622 | /** | |
2623 | * ab8500_charger_vbusdetr_handler() - VBUS rising detected | |
2624 | * @irq: interrupt number | |
2625 | * @_di: pointer to the ab8500_charger structure | |
2626 | * | |
2627 | * Returns IRQ status(IRQ_HANDLED) | |
2628 | */ | |
2629 | static irqreturn_t ab8500_charger_vbusdetr_handler(int irq, void *_di) | |
2630 | { | |
2631 | struct ab8500_charger *di = _di; | |
2632 | ||
2633 | di->vbus_detected = true; | |
2634 | dev_dbg(di->dev, "VBUS rising detected\n"); | |
34c11a70 | 2635 | |
84edbeea AM |
2636 | queue_work(di->charger_wq, &di->detect_usb_type_work); |
2637 | ||
2638 | return IRQ_HANDLED; | |
2639 | } | |
2640 | ||
2641 | /** | |
2642 | * ab8500_charger_usblinkstatus_handler() - USB link status has changed | |
2643 | * @irq: interrupt number | |
2644 | * @_di: pointer to the ab8500_charger structure | |
2645 | * | |
2646 | * Returns IRQ status(IRQ_HANDLED) | |
2647 | */ | |
2648 | static irqreturn_t ab8500_charger_usblinkstatus_handler(int irq, void *_di) | |
2649 | { | |
2650 | struct ab8500_charger *di = _di; | |
2651 | ||
2652 | dev_dbg(di->dev, "USB link status changed\n"); | |
2653 | ||
2654 | queue_work(di->charger_wq, &di->usb_link_status_work); | |
2655 | ||
2656 | return IRQ_HANDLED; | |
2657 | } | |
2658 | ||
2659 | /** | |
2660 | * ab8500_charger_usbchthprotr_handler() - Die temp is above usb charger | |
2661 | * thermal protection threshold | |
2662 | * @irq: interrupt number | |
2663 | * @_di: pointer to the ab8500_charger structure | |
2664 | * | |
2665 | * Returns IRQ status(IRQ_HANDLED) | |
2666 | */ | |
2667 | static irqreturn_t ab8500_charger_usbchthprotr_handler(int irq, void *_di) | |
2668 | { | |
2669 | struct ab8500_charger *di = _di; | |
2670 | ||
2671 | dev_dbg(di->dev, | |
2672 | "Die temp above USB charger thermal protection threshold\n"); | |
2673 | queue_work(di->charger_wq, &di->check_usb_thermal_prot_work); | |
2674 | ||
2675 | return IRQ_HANDLED; | |
2676 | } | |
2677 | ||
2678 | /** | |
2679 | * ab8500_charger_usbchthprotf_handler() - Die temp is below usb charger | |
2680 | * thermal protection threshold | |
2681 | * @irq: interrupt number | |
2682 | * @_di: pointer to the ab8500_charger structure | |
2683 | * | |
2684 | * Returns IRQ status(IRQ_HANDLED) | |
2685 | */ | |
2686 | static irqreturn_t ab8500_charger_usbchthprotf_handler(int irq, void *_di) | |
2687 | { | |
2688 | struct ab8500_charger *di = _di; | |
2689 | ||
2690 | dev_dbg(di->dev, | |
2691 | "Die temp ok for USB charger thermal protection threshold\n"); | |
2692 | queue_work(di->charger_wq, &di->check_usb_thermal_prot_work); | |
2693 | ||
2694 | return IRQ_HANDLED; | |
2695 | } | |
2696 | ||
2697 | /** | |
2698 | * ab8500_charger_usbchargernotokr_handler() - USB charger not ok detected | |
2699 | * @irq: interrupt number | |
2700 | * @_di: pointer to the ab8500_charger structure | |
2701 | * | |
2702 | * Returns IRQ status(IRQ_HANDLED) | |
2703 | */ | |
2704 | static irqreturn_t ab8500_charger_usbchargernotokr_handler(int irq, void *_di) | |
2705 | { | |
2706 | struct ab8500_charger *di = _di; | |
2707 | ||
2708 | dev_dbg(di->dev, "Not allowed USB charger detected\n"); | |
2709 | queue_delayed_work(di->charger_wq, &di->check_usbchgnotok_work, 0); | |
2710 | ||
2711 | return IRQ_HANDLED; | |
2712 | } | |
2713 | ||
2714 | /** | |
2715 | * ab8500_charger_chwdexp_handler() - Charger watchdog expired | |
2716 | * @irq: interrupt number | |
2717 | * @_di: pointer to the ab8500_charger structure | |
2718 | * | |
2719 | * Returns IRQ status(IRQ_HANDLED) | |
2720 | */ | |
2721 | static irqreturn_t ab8500_charger_chwdexp_handler(int irq, void *_di) | |
2722 | { | |
2723 | struct ab8500_charger *di = _di; | |
2724 | ||
2725 | dev_dbg(di->dev, "Charger watchdog expired\n"); | |
2726 | ||
2727 | /* | |
2728 | * The charger that was online when the watchdog expired | |
2729 | * needs to be restarted for charging to start again | |
2730 | */ | |
2731 | if (di->ac.charger_online) { | |
2732 | di->ac.wd_expired = true; | |
2733 | ab8500_power_supply_changed(di, &di->ac_chg.psy); | |
2734 | } | |
2735 | if (di->usb.charger_online) { | |
2736 | di->usb.wd_expired = true; | |
2737 | ab8500_power_supply_changed(di, &di->usb_chg.psy); | |
2738 | } | |
2739 | ||
2740 | return IRQ_HANDLED; | |
2741 | } | |
2742 | ||
34c11a70 POH |
2743 | /** |
2744 | * ab8500_charger_vbuschdropend_handler() - VBUS drop removed | |
2745 | * @irq: interrupt number | |
2746 | * @_di: pointer to the ab8500_charger structure | |
2747 | * | |
2748 | * Returns IRQ status(IRQ_HANDLED) | |
2749 | */ | |
2750 | static irqreturn_t ab8500_charger_vbuschdropend_handler(int irq, void *_di) | |
2751 | { | |
2752 | struct ab8500_charger *di = _di; | |
2753 | ||
2754 | dev_dbg(di->dev, "VBUS charger drop ended\n"); | |
2755 | di->flags.vbus_drop_end = true; | |
2756 | queue_delayed_work(di->charger_wq, &di->vbus_drop_end_work, | |
2757 | round_jiffies(30 * HZ)); | |
2758 | ||
2759 | return IRQ_HANDLED; | |
2760 | } | |
2761 | ||
84edbeea AM |
2762 | /** |
2763 | * ab8500_charger_vbusovv_handler() - VBUS overvoltage detected | |
2764 | * @irq: interrupt number | |
2765 | * @_di: pointer to the ab8500_charger structure | |
2766 | * | |
2767 | * Returns IRQ status(IRQ_HANDLED) | |
2768 | */ | |
2769 | static irqreturn_t ab8500_charger_vbusovv_handler(int irq, void *_di) | |
2770 | { | |
2771 | struct ab8500_charger *di = _di; | |
2772 | ||
2773 | dev_dbg(di->dev, "VBUS overvoltage detected\n"); | |
2774 | di->flags.vbus_ovv = true; | |
2775 | ab8500_power_supply_changed(di, &di->usb_chg.psy); | |
2776 | ||
2777 | /* Schedule a new HW failure check */ | |
2778 | queue_delayed_work(di->charger_wq, &di->check_hw_failure_work, 0); | |
2779 | ||
2780 | return IRQ_HANDLED; | |
2781 | } | |
2782 | ||
2783 | /** | |
2784 | * ab8500_charger_ac_get_property() - get the ac/mains properties | |
2785 | * @psy: pointer to the power_supply structure | |
2786 | * @psp: pointer to the power_supply_property structure | |
2787 | * @val: pointer to the power_supply_propval union | |
2788 | * | |
2789 | * This function gets called when an application tries to get the ac/mains | |
2790 | * properties by reading the sysfs files. | |
2791 | * AC/Mains properties are online, present and voltage. | |
2792 | * online: ac/mains charging is in progress or not | |
2793 | * present: presence of the ac/mains | |
2794 | * voltage: AC/Mains voltage | |
2795 | * Returns error code in case of failure else 0(on success) | |
2796 | */ | |
2797 | static int ab8500_charger_ac_get_property(struct power_supply *psy, | |
2798 | enum power_supply_property psp, | |
2799 | union power_supply_propval *val) | |
2800 | { | |
2801 | struct ab8500_charger *di; | |
a864c5a8 | 2802 | int ret; |
84edbeea AM |
2803 | |
2804 | di = to_ab8500_charger_ac_device_info(psy_to_ux500_charger(psy)); | |
2805 | ||
2806 | switch (psp) { | |
2807 | case POWER_SUPPLY_PROP_HEALTH: | |
2808 | if (di->flags.mainextchnotok) | |
2809 | val->intval = POWER_SUPPLY_HEALTH_UNSPEC_FAILURE; | |
2810 | else if (di->ac.wd_expired || di->usb.wd_expired) | |
2811 | val->intval = POWER_SUPPLY_HEALTH_DEAD; | |
2812 | else if (di->flags.main_thermal_prot) | |
2813 | val->intval = POWER_SUPPLY_HEALTH_OVERHEAT; | |
2814 | else | |
2815 | val->intval = POWER_SUPPLY_HEALTH_GOOD; | |
2816 | break; | |
2817 | case POWER_SUPPLY_PROP_ONLINE: | |
2818 | val->intval = di->ac.charger_online; | |
2819 | break; | |
2820 | case POWER_SUPPLY_PROP_PRESENT: | |
2821 | val->intval = di->ac.charger_connected; | |
2822 | break; | |
2823 | case POWER_SUPPLY_PROP_VOLTAGE_NOW: | |
a864c5a8 JA |
2824 | ret = ab8500_charger_get_ac_voltage(di); |
2825 | if (ret >= 0) | |
2826 | di->ac.charger_voltage = ret; | |
2827 | /* On error, use previous value */ | |
84edbeea AM |
2828 | val->intval = di->ac.charger_voltage * 1000; |
2829 | break; | |
2830 | case POWER_SUPPLY_PROP_VOLTAGE_AVG: | |
2831 | /* | |
2832 | * This property is used to indicate when CV mode is entered | |
2833 | * for the AC charger | |
2834 | */ | |
2835 | di->ac.cv_active = ab8500_charger_ac_cv(di); | |
2836 | val->intval = di->ac.cv_active; | |
2837 | break; | |
2838 | case POWER_SUPPLY_PROP_CURRENT_NOW: | |
a864c5a8 JA |
2839 | ret = ab8500_charger_get_ac_current(di); |
2840 | if (ret >= 0) | |
2841 | di->ac.charger_current = ret; | |
2842 | val->intval = di->ac.charger_current * 1000; | |
84edbeea AM |
2843 | break; |
2844 | default: | |
2845 | return -EINVAL; | |
2846 | } | |
2847 | return 0; | |
2848 | } | |
2849 | ||
2850 | /** | |
2851 | * ab8500_charger_usb_get_property() - get the usb properties | |
2852 | * @psy: pointer to the power_supply structure | |
2853 | * @psp: pointer to the power_supply_property structure | |
2854 | * @val: pointer to the power_supply_propval union | |
2855 | * | |
2856 | * This function gets called when an application tries to get the usb | |
2857 | * properties by reading the sysfs files. | |
2858 | * USB properties are online, present and voltage. | |
2859 | * online: usb charging is in progress or not | |
2860 | * present: presence of the usb | |
2861 | * voltage: vbus voltage | |
2862 | * Returns error code in case of failure else 0(on success) | |
2863 | */ | |
2864 | static int ab8500_charger_usb_get_property(struct power_supply *psy, | |
2865 | enum power_supply_property psp, | |
2866 | union power_supply_propval *val) | |
2867 | { | |
2868 | struct ab8500_charger *di; | |
a864c5a8 | 2869 | int ret; |
84edbeea AM |
2870 | |
2871 | di = to_ab8500_charger_usb_device_info(psy_to_ux500_charger(psy)); | |
2872 | ||
2873 | switch (psp) { | |
2874 | case POWER_SUPPLY_PROP_HEALTH: | |
2875 | if (di->flags.usbchargernotok) | |
2876 | val->intval = POWER_SUPPLY_HEALTH_UNSPEC_FAILURE; | |
2877 | else if (di->ac.wd_expired || di->usb.wd_expired) | |
2878 | val->intval = POWER_SUPPLY_HEALTH_DEAD; | |
2879 | else if (di->flags.usb_thermal_prot) | |
2880 | val->intval = POWER_SUPPLY_HEALTH_OVERHEAT; | |
2881 | else if (di->flags.vbus_ovv) | |
2882 | val->intval = POWER_SUPPLY_HEALTH_OVERVOLTAGE; | |
2883 | else | |
2884 | val->intval = POWER_SUPPLY_HEALTH_GOOD; | |
2885 | break; | |
2886 | case POWER_SUPPLY_PROP_ONLINE: | |
2887 | val->intval = di->usb.charger_online; | |
2888 | break; | |
2889 | case POWER_SUPPLY_PROP_PRESENT: | |
2890 | val->intval = di->usb.charger_connected; | |
2891 | break; | |
2892 | case POWER_SUPPLY_PROP_VOLTAGE_NOW: | |
a864c5a8 JA |
2893 | ret = ab8500_charger_get_vbus_voltage(di); |
2894 | if (ret >= 0) | |
2895 | di->usb.charger_voltage = ret; | |
84edbeea AM |
2896 | val->intval = di->usb.charger_voltage * 1000; |
2897 | break; | |
2898 | case POWER_SUPPLY_PROP_VOLTAGE_AVG: | |
2899 | /* | |
2900 | * This property is used to indicate when CV mode is entered | |
2901 | * for the USB charger | |
2902 | */ | |
2903 | di->usb.cv_active = ab8500_charger_usb_cv(di); | |
2904 | val->intval = di->usb.cv_active; | |
2905 | break; | |
2906 | case POWER_SUPPLY_PROP_CURRENT_NOW: | |
a864c5a8 JA |
2907 | ret = ab8500_charger_get_usb_current(di); |
2908 | if (ret >= 0) | |
2909 | di->usb.charger_current = ret; | |
2910 | val->intval = di->usb.charger_current * 1000; | |
84edbeea AM |
2911 | break; |
2912 | case POWER_SUPPLY_PROP_CURRENT_AVG: | |
2913 | /* | |
2914 | * This property is used to indicate when VBUS has collapsed | |
2915 | * due to too high output current from the USB charger | |
2916 | */ | |
2917 | if (di->flags.vbus_collapse) | |
2918 | val->intval = 1; | |
2919 | else | |
2920 | val->intval = 0; | |
2921 | break; | |
2922 | default: | |
2923 | return -EINVAL; | |
2924 | } | |
2925 | return 0; | |
2926 | } | |
2927 | ||
2928 | /** | |
2929 | * ab8500_charger_init_hw_registers() - Set up charger related registers | |
2930 | * @di: pointer to the ab8500_charger structure | |
2931 | * | |
2932 | * Set up charger OVV, watchdog and maximum voltage registers as well as | |
2933 | * charging of the backup battery | |
2934 | */ | |
2935 | static int ab8500_charger_init_hw_registers(struct ab8500_charger *di) | |
2936 | { | |
2937 | int ret = 0; | |
0f4aa401 | 2938 | u8 bup_vch_range = 0, vbup33_vrtcn = 0; |
84edbeea AM |
2939 | |
2940 | /* Setup maximum charger current and voltage for ABB cut2.0 */ | |
2941 | if (!is_ab8500_1p1_or_earlier(di->parent)) { | |
2942 | ret = abx500_set_register_interruptible(di->dev, | |
2943 | AB8500_CHARGER, | |
2944 | AB8500_CH_VOLT_LVL_MAX_REG, CH_VOL_LVL_4P6); | |
2945 | if (ret) { | |
2946 | dev_err(di->dev, | |
2947 | "failed to set CH_VOLT_LVL_MAX_REG\n"); | |
2948 | goto out; | |
2949 | } | |
2950 | ||
2951 | ret = abx500_set_register_interruptible(di->dev, | |
2952 | AB8500_CHARGER, | |
2953 | AB8500_CH_OPT_CRNTLVL_MAX_REG, CH_OP_CUR_LVL_1P6); | |
2954 | if (ret) { | |
2955 | dev_err(di->dev, | |
2956 | "failed to set CH_OPT_CRNTLVL_MAX_REG\n"); | |
2957 | goto out; | |
2958 | } | |
2959 | } | |
2960 | ||
0ed5107f JA |
2961 | if (is_ab9540_2p0(di->parent) || is_ab8505_2p0(di->parent)) |
2962 | ret = abx500_mask_and_set_register_interruptible(di->dev, | |
2963 | AB8500_CHARGER, | |
2964 | AB8500_USBCH_CTRL2_REG, | |
2965 | VBUS_AUTO_IN_CURR_LIM_ENA, | |
2966 | VBUS_AUTO_IN_CURR_LIM_ENA); | |
2967 | else | |
2968 | /* | |
2969 | * VBUS OVV set to 6.3V and enable automatic current limitation | |
2970 | */ | |
2971 | ret = abx500_set_register_interruptible(di->dev, | |
2972 | AB8500_CHARGER, | |
2973 | AB8500_USBCH_CTRL2_REG, | |
2974 | VBUS_OVV_SELECT_6P3V | VBUS_AUTO_IN_CURR_LIM_ENA); | |
84edbeea | 2975 | if (ret) { |
0ed5107f JA |
2976 | dev_err(di->dev, |
2977 | "failed to set automatic current limitation\n"); | |
84edbeea AM |
2978 | goto out; |
2979 | } | |
2980 | ||
2981 | /* Enable main watchdog in OTP */ | |
2982 | ret = abx500_set_register_interruptible(di->dev, | |
2983 | AB8500_OTP_EMUL, AB8500_OTP_CONF_15, OTP_ENABLE_WD); | |
2984 | if (ret) { | |
2985 | dev_err(di->dev, "failed to enable main WD in OTP\n"); | |
2986 | goto out; | |
2987 | } | |
2988 | ||
2989 | /* Enable main watchdog */ | |
2990 | ret = abx500_set_register_interruptible(di->dev, | |
2991 | AB8500_SYS_CTRL2_BLOCK, | |
2992 | AB8500_MAIN_WDOG_CTRL_REG, MAIN_WDOG_ENA); | |
2993 | if (ret) { | |
2994 | dev_err(di->dev, "faile to enable main watchdog\n"); | |
2995 | goto out; | |
2996 | } | |
2997 | ||
2998 | /* | |
2999 | * Due to internal synchronisation, Enable and Kick watchdog bits | |
3000 | * cannot be enabled in a single write. | |
3001 | * A minimum delay of 2*32 kHz period (62.5µs) must be inserted | |
3002 | * between writing Enable then Kick bits. | |
3003 | */ | |
3004 | udelay(63); | |
3005 | ||
3006 | /* Kick main watchdog */ | |
3007 | ret = abx500_set_register_interruptible(di->dev, | |
3008 | AB8500_SYS_CTRL2_BLOCK, | |
3009 | AB8500_MAIN_WDOG_CTRL_REG, | |
3010 | (MAIN_WDOG_ENA | MAIN_WDOG_KICK)); | |
3011 | if (ret) { | |
3012 | dev_err(di->dev, "failed to kick main watchdog\n"); | |
3013 | goto out; | |
3014 | } | |
3015 | ||
3016 | /* Disable main watchdog */ | |
3017 | ret = abx500_set_register_interruptible(di->dev, | |
3018 | AB8500_SYS_CTRL2_BLOCK, | |
3019 | AB8500_MAIN_WDOG_CTRL_REG, MAIN_WDOG_DIS); | |
3020 | if (ret) { | |
3021 | dev_err(di->dev, "failed to disable main watchdog\n"); | |
3022 | goto out; | |
3023 | } | |
3024 | ||
3025 | /* Set watchdog timeout */ | |
3026 | ret = abx500_set_register_interruptible(di->dev, AB8500_CHARGER, | |
3027 | AB8500_CH_WD_TIMER_REG, WD_TIMER); | |
3028 | if (ret) { | |
3029 | dev_err(di->dev, "failed to set charger watchdog timeout\n"); | |
3030 | goto out; | |
3031 | } | |
3032 | ||
34c11a70 POH |
3033 | /* Set charger watchdog timeout */ |
3034 | ret = abx500_set_register_interruptible(di->dev, AB8500_CHARGER, | |
3035 | AB8500_CH_WD_TIMER_REG, WD_TIMER); | |
3036 | if (ret) { | |
3037 | dev_err(di->dev, "failed to set charger watchdog timeout\n"); | |
3038 | goto out; | |
3039 | } | |
3040 | ||
3041 | ret = ab8500_charger_led_en(di, false); | |
3042 | if (ret < 0) { | |
3043 | dev_err(di->dev, "failed to disable LED\n"); | |
3044 | goto out; | |
3045 | } | |
3046 | ||
84edbeea | 3047 | /* Backup battery voltage and current */ |
0f4aa401 YQ |
3048 | if (di->bm->bkup_bat_v > BUP_VCH_SEL_3P1V) |
3049 | bup_vch_range = BUP_VCH_RANGE; | |
3050 | if (di->bm->bkup_bat_v == BUP_VCH_SEL_3P3V) | |
3051 | vbup33_vrtcn = VBUP33_VRTCN; | |
3052 | ||
84edbeea AM |
3053 | ret = abx500_set_register_interruptible(di->dev, |
3054 | AB8500_RTC, | |
3055 | AB8500_RTC_BACKUP_CHG_REG, | |
0f4aa401 | 3056 | (di->bm->bkup_bat_v & 0x3) | di->bm->bkup_bat_i); |
84edbeea AM |
3057 | if (ret) { |
3058 | dev_err(di->dev, "failed to setup backup battery charging\n"); | |
3059 | goto out; | |
3060 | } | |
0f4aa401 YQ |
3061 | if (is_ab8540(di->parent)) { |
3062 | ret = abx500_set_register_interruptible(di->dev, | |
3063 | AB8500_RTC, | |
3064 | AB8500_RTC_CTRL1_REG, | |
3065 | bup_vch_range | vbup33_vrtcn); | |
3066 | if (ret) { | |
3067 | dev_err(di->dev, "failed to setup backup battery charging\n"); | |
3068 | goto out; | |
3069 | } | |
3070 | } | |
84edbeea AM |
3071 | |
3072 | /* Enable backup battery charging */ | |
3073 | abx500_mask_and_set_register_interruptible(di->dev, | |
3074 | AB8500_RTC, AB8500_RTC_CTRL_REG, | |
3075 | RTC_BUP_CH_ENA, RTC_BUP_CH_ENA); | |
3076 | if (ret < 0) | |
3077 | dev_err(di->dev, "%s mask and set failed\n", __func__); | |
3078 | ||
3079 | out: | |
3080 | return ret; | |
3081 | } | |
3082 | ||
3083 | /* | |
3084 | * ab8500 charger driver interrupts and their respective isr | |
3085 | */ | |
3086 | static struct ab8500_charger_interrupts ab8500_charger_irq[] = { | |
3087 | {"MAIN_CH_UNPLUG_DET", ab8500_charger_mainchunplugdet_handler}, | |
3088 | {"MAIN_CHARGE_PLUG_DET", ab8500_charger_mainchplugdet_handler}, | |
3089 | {"MAIN_EXT_CH_NOT_OK", ab8500_charger_mainextchnotok_handler}, | |
3090 | {"MAIN_CH_TH_PROT_R", ab8500_charger_mainchthprotr_handler}, | |
3091 | {"MAIN_CH_TH_PROT_F", ab8500_charger_mainchthprotf_handler}, | |
3092 | {"VBUS_DET_F", ab8500_charger_vbusdetf_handler}, | |
3093 | {"VBUS_DET_R", ab8500_charger_vbusdetr_handler}, | |
3094 | {"USB_LINK_STATUS", ab8500_charger_usblinkstatus_handler}, | |
3095 | {"USB_CH_TH_PROT_R", ab8500_charger_usbchthprotr_handler}, | |
3096 | {"USB_CH_TH_PROT_F", ab8500_charger_usbchthprotf_handler}, | |
3097 | {"USB_CHARGER_NOT_OKR", ab8500_charger_usbchargernotokr_handler}, | |
3098 | {"VBUS_OVV", ab8500_charger_vbusovv_handler}, | |
3099 | {"CH_WD_EXP", ab8500_charger_chwdexp_handler}, | |
34c11a70 | 3100 | {"VBUS_CH_DROP_END", ab8500_charger_vbuschdropend_handler}, |
84edbeea AM |
3101 | }; |
3102 | ||
3103 | static int ab8500_charger_usb_notifier_call(struct notifier_block *nb, | |
3104 | unsigned long event, void *power) | |
3105 | { | |
3106 | struct ab8500_charger *di = | |
3107 | container_of(nb, struct ab8500_charger, nb); | |
3108 | enum ab8500_usb_state bm_usb_state; | |
3109 | unsigned mA = *((unsigned *)power); | |
3110 | ||
c9ade0fc LJ |
3111 | if (!di) |
3112 | return NOTIFY_DONE; | |
3113 | ||
84edbeea AM |
3114 | if (event != USB_EVENT_VBUS) { |
3115 | dev_dbg(di->dev, "not a standard host, returning\n"); | |
3116 | return NOTIFY_DONE; | |
3117 | } | |
3118 | ||
3119 | /* TODO: State is fabricate here. See if charger really needs USB | |
3120 | * state or if mA is enough | |
3121 | */ | |
3122 | if ((di->usb_state.usb_current == 2) && (mA > 2)) | |
3123 | bm_usb_state = AB8500_BM_USB_STATE_RESUME; | |
3124 | else if (mA == 0) | |
3125 | bm_usb_state = AB8500_BM_USB_STATE_RESET_HS; | |
3126 | else if (mA == 2) | |
3127 | bm_usb_state = AB8500_BM_USB_STATE_SUSPEND; | |
3128 | else if (mA >= 8) /* 8, 100, 500 */ | |
3129 | bm_usb_state = AB8500_BM_USB_STATE_CONFIGURED; | |
3130 | else /* Should never occur */ | |
3131 | bm_usb_state = AB8500_BM_USB_STATE_RESET_FS; | |
3132 | ||
3133 | dev_dbg(di->dev, "%s usb_state: 0x%02x mA: %d\n", | |
3134 | __func__, bm_usb_state, mA); | |
3135 | ||
3136 | spin_lock(&di->usb_state.usb_lock); | |
34c11a70 POH |
3137 | di->usb_state.state_tmp = bm_usb_state; |
3138 | di->usb_state.usb_current_tmp = mA; | |
84edbeea AM |
3139 | spin_unlock(&di->usb_state.usb_lock); |
3140 | ||
34c11a70 POH |
3141 | /* |
3142 | * wait for some time until you get updates from the usb stack | |
3143 | * and negotiations are completed | |
3144 | */ | |
3145 | queue_delayed_work(di->charger_wq, &di->usb_state_changed_work, HZ/2); | |
84edbeea AM |
3146 | |
3147 | return NOTIFY_OK; | |
3148 | } | |
3149 | ||
3150 | #if defined(CONFIG_PM) | |
3151 | static int ab8500_charger_resume(struct platform_device *pdev) | |
3152 | { | |
3153 | int ret; | |
3154 | struct ab8500_charger *di = platform_get_drvdata(pdev); | |
3155 | ||
3156 | /* | |
3157 | * For ABB revision 1.0 and 1.1 there is a bug in the watchdog | |
3158 | * logic. That means we have to continously kick the charger | |
3159 | * watchdog even when no charger is connected. This is only | |
3160 | * valid once the AC charger has been enabled. This is | |
3161 | * a bug that is not handled by the algorithm and the | |
3162 | * watchdog have to be kicked by the charger driver | |
3163 | * when the AC charger is disabled | |
3164 | */ | |
3165 | if (di->ac_conn && is_ab8500_1p1_or_earlier(di->parent)) { | |
3166 | ret = abx500_set_register_interruptible(di->dev, AB8500_CHARGER, | |
3167 | AB8500_CHARG_WD_CTRL, CHARG_WD_KICK); | |
3168 | if (ret) | |
3169 | dev_err(di->dev, "Failed to kick WD!\n"); | |
3170 | ||
3171 | /* If not already pending start a new timer */ | |
3172 | if (!delayed_work_pending( | |
3173 | &di->kick_wd_work)) { | |
3174 | queue_delayed_work(di->charger_wq, &di->kick_wd_work, | |
3175 | round_jiffies(WD_KICK_INTERVAL)); | |
3176 | } | |
3177 | } | |
3178 | ||
3179 | /* If we still have a HW failure, schedule a new check */ | |
3180 | if (di->flags.mainextchnotok || di->flags.vbus_ovv) { | |
3181 | queue_delayed_work(di->charger_wq, | |
3182 | &di->check_hw_failure_work, 0); | |
3183 | } | |
3184 | ||
34c11a70 POH |
3185 | if (di->flags.vbus_drop_end) |
3186 | queue_delayed_work(di->charger_wq, &di->vbus_drop_end_work, 0); | |
3187 | ||
84edbeea AM |
3188 | return 0; |
3189 | } | |
3190 | ||
3191 | static int ab8500_charger_suspend(struct platform_device *pdev, | |
3192 | pm_message_t state) | |
3193 | { | |
3194 | struct ab8500_charger *di = platform_get_drvdata(pdev); | |
3195 | ||
3196 | /* Cancel any pending HW failure check */ | |
3197 | if (delayed_work_pending(&di->check_hw_failure_work)) | |
3198 | cancel_delayed_work(&di->check_hw_failure_work); | |
3199 | ||
34c11a70 POH |
3200 | if (delayed_work_pending(&di->vbus_drop_end_work)) |
3201 | cancel_delayed_work(&di->vbus_drop_end_work); | |
3202 | ||
53ef1f59 JA |
3203 | flush_delayed_work(&di->attach_work); |
3204 | flush_delayed_work(&di->usb_charger_attached_work); | |
3205 | flush_delayed_work(&di->ac_charger_attached_work); | |
3206 | flush_delayed_work(&di->check_usbchgnotok_work); | |
3207 | flush_delayed_work(&di->check_vbat_work); | |
3208 | flush_delayed_work(&di->kick_wd_work); | |
3209 | ||
3210 | flush_work(&di->usb_link_status_work); | |
3211 | flush_work(&di->ac_work); | |
3212 | flush_work(&di->detect_usb_type_work); | |
3213 | ||
34c11a70 POH |
3214 | if (atomic_read(&di->current_stepping_sessions)) |
3215 | return -EAGAIN; | |
3216 | ||
84edbeea AM |
3217 | return 0; |
3218 | } | |
3219 | #else | |
3220 | #define ab8500_charger_suspend NULL | |
3221 | #define ab8500_charger_resume NULL | |
3222 | #endif | |
3223 | ||
415ec69f | 3224 | static int ab8500_charger_remove(struct platform_device *pdev) |
84edbeea AM |
3225 | { |
3226 | struct ab8500_charger *di = platform_get_drvdata(pdev); | |
3227 | int i, irq, ret; | |
3228 | ||
3229 | /* Disable AC charging */ | |
3230 | ab8500_charger_ac_en(&di->ac_chg, false, 0, 0); | |
3231 | ||
3232 | /* Disable USB charging */ | |
3233 | ab8500_charger_usb_en(&di->usb_chg, false, 0, 0); | |
3234 | ||
3235 | /* Disable interrupts */ | |
3236 | for (i = 0; i < ARRAY_SIZE(ab8500_charger_irq); i++) { | |
3237 | irq = platform_get_irq_byname(pdev, ab8500_charger_irq[i].name); | |
3238 | free_irq(irq, di); | |
3239 | } | |
3240 | ||
84edbeea AM |
3241 | /* Backup battery voltage and current disable */ |
3242 | ret = abx500_mask_and_set_register_interruptible(di->dev, | |
3243 | AB8500_RTC, AB8500_RTC_CTRL_REG, RTC_BUP_CH_ENA, 0); | |
3244 | if (ret < 0) | |
3245 | dev_err(di->dev, "%s mask and set failed\n", __func__); | |
3246 | ||
efd71c89 | 3247 | usb_unregister_notifier(di->usb_phy, &di->nb); |
721002ec | 3248 | usb_put_phy(di->usb_phy); |
84edbeea AM |
3249 | |
3250 | /* Delete the work queue */ | |
3251 | destroy_workqueue(di->charger_wq); | |
3252 | ||
3253 | flush_scheduled_work(); | |
72a90ddb | 3254 | if (di->usb_chg.enabled) |
01ec8c54 | 3255 | power_supply_unregister(&di->usb_chg.psy); |
34c11a70 | 3256 | #if !defined(CONFIG_CHARGER_PM2301) |
72a90ddb | 3257 | if (di->ac_chg.enabled) |
01ec8c54 | 3258 | power_supply_unregister(&di->ac_chg.psy); |
34c11a70 | 3259 | #endif |
84edbeea | 3260 | platform_set_drvdata(pdev, NULL); |
84edbeea AM |
3261 | |
3262 | return 0; | |
3263 | } | |
3264 | ||
4aef72db R |
3265 | static char *supply_interface[] = { |
3266 | "ab8500_chargalg", | |
3267 | "ab8500_fg", | |
3268 | "ab8500_btemp", | |
3269 | }; | |
3270 | ||
c8afa640 | 3271 | static int ab8500_charger_probe(struct platform_device *pdev) |
84edbeea | 3272 | { |
4aef72db | 3273 | struct device_node *np = pdev->dev.of_node; |
7722b799 | 3274 | struct abx500_bm_data *plat = pdev->dev.platform_data; |
2aac3de1 | 3275 | struct ab8500_charger *di; |
b269fff4 | 3276 | int irq, i, charger_status, ret = 0, ch_stat; |
84edbeea | 3277 | |
4aef72db R |
3278 | di = devm_kzalloc(&pdev->dev, sizeof(*di), GFP_KERNEL); |
3279 | if (!di) { | |
3280 | dev_err(&pdev->dev, "%s no mem for ab8500_charger\n", __func__); | |
84edbeea | 3281 | return -ENOMEM; |
4aef72db | 3282 | } |
7722b799 LJ |
3283 | |
3284 | if (!plat) { | |
3285 | dev_err(&pdev->dev, "no battery management data supplied\n"); | |
3286 | return -EINVAL; | |
3287 | } | |
3288 | di->bm = plat; | |
3289 | ||
3290 | if (np) { | |
3291 | ret = ab8500_bm_of_probe(&pdev->dev, np, di->bm); | |
3292 | if (ret) { | |
3293 | dev_err(&pdev->dev, "failed to get battery information\n"); | |
3294 | return ret; | |
4aef72db | 3295 | } |
7722b799 LJ |
3296 | di->autopower_cfg = of_property_read_bool(np, "autopower_cfg"); |
3297 | } else | |
4aef72db | 3298 | di->autopower_cfg = false; |
84edbeea AM |
3299 | |
3300 | /* get parent data */ | |
3301 | di->dev = &pdev->dev; | |
3302 | di->parent = dev_get_drvdata(pdev->dev.parent); | |
3303 | di->gpadc = ab8500_gpadc_get("ab8500-gpadc.0"); | |
3304 | ||
3305 | /* initialize lock */ | |
3306 | spin_lock_init(&di->usb_state.usb_lock); | |
34c11a70 | 3307 | mutex_init(&di->usb_ipt_crnt_lock); |
84edbeea | 3308 | |
84edbeea | 3309 | di->autopower = false; |
ff38090a | 3310 | di->invalid_charger_detect_state = 0; |
84edbeea AM |
3311 | |
3312 | /* AC supply */ | |
3313 | /* power_supply base class */ | |
3314 | di->ac_chg.psy.name = "ab8500_ac"; | |
3315 | di->ac_chg.psy.type = POWER_SUPPLY_TYPE_MAINS; | |
3316 | di->ac_chg.psy.properties = ab8500_charger_ac_props; | |
3317 | di->ac_chg.psy.num_properties = ARRAY_SIZE(ab8500_charger_ac_props); | |
3318 | di->ac_chg.psy.get_property = ab8500_charger_ac_get_property; | |
4aef72db R |
3319 | di->ac_chg.psy.supplied_to = supply_interface; |
3320 | di->ac_chg.psy.num_supplicants = ARRAY_SIZE(supply_interface), | |
84edbeea AM |
3321 | /* ux500_charger sub-class */ |
3322 | di->ac_chg.ops.enable = &ab8500_charger_ac_en; | |
4dcdf577 | 3323 | di->ac_chg.ops.check_enable = &ab8500_charger_ac_check_enable; |
84edbeea AM |
3324 | di->ac_chg.ops.kick_wd = &ab8500_charger_watchdog_kick; |
3325 | di->ac_chg.ops.update_curr = &ab8500_charger_update_charger_current; | |
3326 | di->ac_chg.max_out_volt = ab8500_charger_voltage_map[ | |
3327 | ARRAY_SIZE(ab8500_charger_voltage_map) - 1]; | |
3328 | di->ac_chg.max_out_curr = ab8500_charger_current_map[ | |
3329 | ARRAY_SIZE(ab8500_charger_current_map) - 1]; | |
e07a5645 | 3330 | di->ac_chg.wdt_refresh = CHG_WD_INTERVAL; |
97034a1e | 3331 | di->ac_chg.enabled = di->bm->ac_enabled; |
e07a5645 | 3332 | di->ac_chg.external = false; |
84edbeea AM |
3333 | |
3334 | /* USB supply */ | |
3335 | /* power_supply base class */ | |
3336 | di->usb_chg.psy.name = "ab8500_usb"; | |
3337 | di->usb_chg.psy.type = POWER_SUPPLY_TYPE_USB; | |
3338 | di->usb_chg.psy.properties = ab8500_charger_usb_props; | |
3339 | di->usb_chg.psy.num_properties = ARRAY_SIZE(ab8500_charger_usb_props); | |
3340 | di->usb_chg.psy.get_property = ab8500_charger_usb_get_property; | |
4aef72db R |
3341 | di->usb_chg.psy.supplied_to = supply_interface; |
3342 | di->usb_chg.psy.num_supplicants = ARRAY_SIZE(supply_interface), | |
84edbeea AM |
3343 | /* ux500_charger sub-class */ |
3344 | di->usb_chg.ops.enable = &ab8500_charger_usb_en; | |
4dcdf577 | 3345 | di->usb_chg.ops.check_enable = &ab8500_charger_usb_check_enable; |
84edbeea AM |
3346 | di->usb_chg.ops.kick_wd = &ab8500_charger_watchdog_kick; |
3347 | di->usb_chg.ops.update_curr = &ab8500_charger_update_charger_current; | |
3348 | di->usb_chg.max_out_volt = ab8500_charger_voltage_map[ | |
3349 | ARRAY_SIZE(ab8500_charger_voltage_map) - 1]; | |
3350 | di->usb_chg.max_out_curr = ab8500_charger_current_map[ | |
3351 | ARRAY_SIZE(ab8500_charger_current_map) - 1]; | |
e07a5645 | 3352 | di->usb_chg.wdt_refresh = CHG_WD_INTERVAL; |
97034a1e | 3353 | di->usb_chg.enabled = di->bm->usb_enabled; |
e07a5645 | 3354 | di->usb_chg.external = false; |
84edbeea AM |
3355 | |
3356 | /* Create a work queue for the charger */ | |
3357 | di->charger_wq = | |
3358 | create_singlethread_workqueue("ab8500_charger_wq"); | |
3359 | if (di->charger_wq == NULL) { | |
3360 | dev_err(di->dev, "failed to create work queue\n"); | |
4aef72db | 3361 | return -ENOMEM; |
84edbeea AM |
3362 | } |
3363 | ||
b269fff4 LJ |
3364 | mutex_init(&di->charger_attached_mutex); |
3365 | ||
84edbeea | 3366 | /* Init work for HW failure check */ |
203b42f7 | 3367 | INIT_DEFERRABLE_WORK(&di->check_hw_failure_work, |
84edbeea | 3368 | ab8500_charger_check_hw_failure_work); |
203b42f7 | 3369 | INIT_DEFERRABLE_WORK(&di->check_usbchgnotok_work, |
84edbeea AM |
3370 | ab8500_charger_check_usbchargernotok_work); |
3371 | ||
b269fff4 LJ |
3372 | INIT_DELAYED_WORK(&di->ac_charger_attached_work, |
3373 | ab8500_charger_ac_attached_work); | |
3374 | INIT_DELAYED_WORK(&di->usb_charger_attached_work, | |
3375 | ab8500_charger_usb_attached_work); | |
3376 | ||
84edbeea AM |
3377 | /* |
3378 | * For ABB revision 1.0 and 1.1 there is a bug in the watchdog | |
3379 | * logic. That means we have to continously kick the charger | |
3380 | * watchdog even when no charger is connected. This is only | |
3381 | * valid once the AC charger has been enabled. This is | |
3382 | * a bug that is not handled by the algorithm and the | |
3383 | * watchdog have to be kicked by the charger driver | |
3384 | * when the AC charger is disabled | |
3385 | */ | |
203b42f7 | 3386 | INIT_DEFERRABLE_WORK(&di->kick_wd_work, |
84edbeea AM |
3387 | ab8500_charger_kick_watchdog_work); |
3388 | ||
203b42f7 | 3389 | INIT_DEFERRABLE_WORK(&di->check_vbat_work, |
84edbeea AM |
3390 | ab8500_charger_check_vbat_work); |
3391 | ||
4b45f4a9 MC |
3392 | INIT_DELAYED_WORK(&di->attach_work, |
3393 | ab8500_charger_usb_link_attach_work); | |
3394 | ||
34c11a70 POH |
3395 | INIT_DELAYED_WORK(&di->usb_state_changed_work, |
3396 | ab8500_charger_usb_state_changed_work); | |
3397 | ||
3398 | INIT_DELAYED_WORK(&di->vbus_drop_end_work, | |
3399 | ab8500_charger_vbus_drop_end_work); | |
3400 | ||
84edbeea AM |
3401 | /* Init work for charger detection */ |
3402 | INIT_WORK(&di->usb_link_status_work, | |
3403 | ab8500_charger_usb_link_status_work); | |
3404 | INIT_WORK(&di->ac_work, ab8500_charger_ac_work); | |
3405 | INIT_WORK(&di->detect_usb_type_work, | |
3406 | ab8500_charger_detect_usb_type_work); | |
3407 | ||
84edbeea AM |
3408 | /* Init work for checking HW status */ |
3409 | INIT_WORK(&di->check_main_thermal_prot_work, | |
3410 | ab8500_charger_check_main_thermal_prot_work); | |
3411 | INIT_WORK(&di->check_usb_thermal_prot_work, | |
3412 | ab8500_charger_check_usb_thermal_prot_work); | |
3413 | ||
3414 | /* | |
3415 | * VDD ADC supply needs to be enabled from this driver when there | |
3416 | * is a charger connected to avoid erroneous BTEMP_HIGH/LOW | |
3417 | * interrupts during charging | |
3418 | */ | |
8feffd10 | 3419 | di->regu = devm_regulator_get(di->dev, "vddadc"); |
84edbeea AM |
3420 | if (IS_ERR(di->regu)) { |
3421 | ret = PTR_ERR(di->regu); | |
3422 | dev_err(di->dev, "failed to get vddadc regulator\n"); | |
3423 | goto free_charger_wq; | |
3424 | } | |
3425 | ||
3426 | ||
3427 | /* Initialize OVV, and other registers */ | |
3428 | ret = ab8500_charger_init_hw_registers(di); | |
3429 | if (ret) { | |
3430 | dev_err(di->dev, "failed to initialize ABB registers\n"); | |
8feffd10 | 3431 | goto free_charger_wq; |
84edbeea AM |
3432 | } |
3433 | ||
3434 | /* Register AC charger class */ | |
72a90ddb | 3435 | if (di->ac_chg.enabled) { |
01ec8c54 MJ |
3436 | ret = power_supply_register(di->dev, &di->ac_chg.psy); |
3437 | if (ret) { | |
3438 | dev_err(di->dev, "failed to register AC charger\n"); | |
3439 | goto free_charger_wq; | |
3440 | } | |
84edbeea AM |
3441 | } |
3442 | ||
3443 | /* Register USB charger class */ | |
72a90ddb | 3444 | if (di->usb_chg.enabled) { |
01ec8c54 MJ |
3445 | ret = power_supply_register(di->dev, &di->usb_chg.psy); |
3446 | if (ret) { | |
3447 | dev_err(di->dev, "failed to register USB charger\n"); | |
3448 | goto free_ac; | |
3449 | } | |
84edbeea AM |
3450 | } |
3451 | ||
662dca54 | 3452 | di->usb_phy = usb_get_phy(USB_PHY_TYPE_USB2); |
ded017ee | 3453 | if (IS_ERR_OR_NULL(di->usb_phy)) { |
efd71c89 | 3454 | dev_err(di->dev, "failed to get usb transceiver\n"); |
84edbeea AM |
3455 | ret = -EINVAL; |
3456 | goto free_usb; | |
3457 | } | |
3458 | di->nb.notifier_call = ab8500_charger_usb_notifier_call; | |
efd71c89 | 3459 | ret = usb_register_notifier(di->usb_phy, &di->nb); |
84edbeea | 3460 | if (ret) { |
efd71c89 AV |
3461 | dev_err(di->dev, "failed to register usb notifier\n"); |
3462 | goto put_usb_phy; | |
84edbeea AM |
3463 | } |
3464 | ||
3465 | /* Identify the connected charger types during startup */ | |
34c11a70 | 3466 | charger_status = ab8500_charger_detect_chargers(di, true); |
84edbeea AM |
3467 | if (charger_status & AC_PW_CONN) { |
3468 | di->ac.charger_connected = 1; | |
3469 | di->ac_conn = true; | |
3470 | ab8500_power_supply_changed(di, &di->ac_chg.psy); | |
3471 | sysfs_notify(&di->ac_chg.psy.dev->kobj, NULL, "present"); | |
3472 | } | |
3473 | ||
3474 | if (charger_status & USB_PW_CONN) { | |
84edbeea AM |
3475 | di->vbus_detected = true; |
3476 | di->vbus_detected_start = true; | |
3477 | queue_work(di->charger_wq, | |
3478 | &di->detect_usb_type_work); | |
3479 | } | |
3480 | ||
3481 | /* Register interrupts */ | |
3482 | for (i = 0; i < ARRAY_SIZE(ab8500_charger_irq); i++) { | |
3483 | irq = platform_get_irq_byname(pdev, ab8500_charger_irq[i].name); | |
3484 | ret = request_threaded_irq(irq, NULL, ab8500_charger_irq[i].isr, | |
3485 | IRQF_SHARED | IRQF_NO_SUSPEND, | |
3486 | ab8500_charger_irq[i].name, di); | |
3487 | ||
3488 | if (ret != 0) { | |
3489 | dev_err(di->dev, "failed to request %s IRQ %d: %d\n" | |
3490 | , ab8500_charger_irq[i].name, irq, ret); | |
3491 | goto free_irq; | |
3492 | } | |
3493 | dev_dbg(di->dev, "Requested %s IRQ %d: %d\n", | |
3494 | ab8500_charger_irq[i].name, irq, ret); | |
3495 | } | |
3496 | ||
3497 | platform_set_drvdata(pdev, di); | |
3498 | ||
b269fff4 LJ |
3499 | mutex_lock(&di->charger_attached_mutex); |
3500 | ||
34c11a70 | 3501 | ch_stat = ab8500_charger_detect_chargers(di, false); |
b269fff4 LJ |
3502 | |
3503 | if ((ch_stat & AC_PW_CONN) == AC_PW_CONN) { | |
3504 | queue_delayed_work(di->charger_wq, | |
3505 | &di->ac_charger_attached_work, | |
3506 | HZ); | |
3507 | } | |
3508 | if ((ch_stat & USB_PW_CONN) == USB_PW_CONN) { | |
3509 | queue_delayed_work(di->charger_wq, | |
3510 | &di->usb_charger_attached_work, | |
3511 | HZ); | |
3512 | } | |
3513 | ||
3514 | mutex_unlock(&di->charger_attached_mutex); | |
3515 | ||
84edbeea AM |
3516 | return ret; |
3517 | ||
3518 | free_irq: | |
efd71c89 | 3519 | usb_unregister_notifier(di->usb_phy, &di->nb); |
84edbeea AM |
3520 | |
3521 | /* We also have to free all successfully registered irqs */ | |
3522 | for (i = i - 1; i >= 0; i--) { | |
3523 | irq = platform_get_irq_byname(pdev, ab8500_charger_irq[i].name); | |
3524 | free_irq(irq, di); | |
3525 | } | |
efd71c89 | 3526 | put_usb_phy: |
721002ec | 3527 | usb_put_phy(di->usb_phy); |
84edbeea | 3528 | free_usb: |
72a90ddb | 3529 | if (di->usb_chg.enabled) |
01ec8c54 | 3530 | power_supply_unregister(&di->usb_chg.psy); |
84edbeea | 3531 | free_ac: |
72a90ddb | 3532 | if (di->ac_chg.enabled) |
01ec8c54 | 3533 | power_supply_unregister(&di->ac_chg.psy); |
84edbeea AM |
3534 | free_charger_wq: |
3535 | destroy_workqueue(di->charger_wq); | |
84edbeea AM |
3536 | return ret; |
3537 | } | |
3538 | ||
4aef72db R |
3539 | static const struct of_device_id ab8500_charger_match[] = { |
3540 | { .compatible = "stericsson,ab8500-charger", }, | |
3541 | { }, | |
3542 | }; | |
3543 | ||
84edbeea AM |
3544 | static struct platform_driver ab8500_charger_driver = { |
3545 | .probe = ab8500_charger_probe, | |
28ea73f4 | 3546 | .remove = ab8500_charger_remove, |
84edbeea AM |
3547 | .suspend = ab8500_charger_suspend, |
3548 | .resume = ab8500_charger_resume, | |
3549 | .driver = { | |
3550 | .name = "ab8500-charger", | |
3551 | .owner = THIS_MODULE, | |
4aef72db | 3552 | .of_match_table = ab8500_charger_match, |
84edbeea AM |
3553 | }, |
3554 | }; | |
3555 | ||
3556 | static int __init ab8500_charger_init(void) | |
3557 | { | |
3558 | return platform_driver_register(&ab8500_charger_driver); | |
3559 | } | |
3560 | ||
3561 | static void __exit ab8500_charger_exit(void) | |
3562 | { | |
3563 | platform_driver_unregister(&ab8500_charger_driver); | |
3564 | } | |
3565 | ||
3566 | subsys_initcall_sync(ab8500_charger_init); | |
3567 | module_exit(ab8500_charger_exit); | |
3568 | ||
3569 | MODULE_LICENSE("GPL v2"); | |
3570 | MODULE_AUTHOR("Johan Palsson, Karl Komierowski, Arun R Murthy"); | |
3571 | MODULE_ALIAS("platform:ab8500-charger"); | |
3572 | MODULE_DESCRIPTION("AB8500 charger management driver"); |