Richard Purdie | b7557de | 2006-01-05 20:44:55 +0000 | [diff] [blame] | 1 | /* |
| 2 | * Battery and Power Management code for the Sharp SL-C7xx and SL-Cxx00 |
| 3 | * series of PDAs |
| 4 | * |
| 5 | * Copyright (c) 2004-2005 Richard Purdie |
| 6 | * |
| 7 | * Based on code written by Sharp for 2.4 kernels |
| 8 | * |
| 9 | * This program is free software; you can redistribute it and/or modify |
| 10 | * it under the terms of the GNU General Public License version 2 as |
| 11 | * published by the Free Software Foundation. |
| 12 | * |
| 13 | */ |
| 14 | |
| 15 | #undef DEBUG |
| 16 | |
| 17 | #include <linux/module.h> |
| 18 | #include <linux/timer.h> |
| 19 | #include <linux/init.h> |
| 20 | #include <linux/kernel.h> |
| 21 | #include <linux/apm_bios.h> |
| 22 | #include <linux/delay.h> |
| 23 | #include <linux/interrupt.h> |
| 24 | #include <linux/platform_device.h> |
Richard Purdie | 181bf8a | 2006-03-31 02:31:08 -0800 | [diff] [blame] | 25 | #include <linux/leds.h> |
Richard Purdie | b7557de | 2006-01-05 20:44:55 +0000 | [diff] [blame] | 26 | |
| 27 | #include <asm/hardware.h> |
| 28 | #include <asm/mach-types.h> |
| 29 | #include <asm/irq.h> |
| 30 | #include <asm/apm.h> |
| 31 | #include <asm/arch/pm.h> |
| 32 | #include <asm/arch/pxa-regs.h> |
| 33 | #include <asm/arch/sharpsl.h> |
| 34 | #include <asm/hardware/sharpsl_pm.h> |
| 35 | |
| 36 | /* |
| 37 | * Constants |
| 38 | */ |
| 39 | #define SHARPSL_CHARGE_ON_TIME_INTERVAL (msecs_to_jiffies(1*60*1000)) /* 1 min */ |
| 40 | #define SHARPSL_CHARGE_FINISH_TIME (msecs_to_jiffies(10*60*1000)) /* 10 min */ |
| 41 | #define SHARPSL_BATCHK_TIME (msecs_to_jiffies(15*1000)) /* 15 sec */ |
| 42 | #define SHARPSL_BATCHK_TIME_SUSPEND (60*10) /* 10 min */ |
Dirk Opfer | 576b3ef | 2006-09-25 22:51:02 +0100 | [diff] [blame] | 43 | |
Richard Purdie | b7557de | 2006-01-05 20:44:55 +0000 | [diff] [blame] | 44 | #define SHARPSL_WAIT_CO_TIME 15 /* 15 sec */ |
| 45 | #define SHARPSL_WAIT_DISCHARGE_ON 100 /* 100 msec */ |
| 46 | #define SHARPSL_CHECK_BATTERY_WAIT_TIME_TEMP 10 /* 10 msec */ |
| 47 | #define SHARPSL_CHECK_BATTERY_WAIT_TIME_VOLT 10 /* 10 msec */ |
| 48 | #define SHARPSL_CHECK_BATTERY_WAIT_TIME_ACIN 10 /* 10 msec */ |
| 49 | #define SHARPSL_CHARGE_WAIT_TIME 15 /* 15 msec */ |
| 50 | #define SHARPSL_CHARGE_CO_CHECK_TIME 5 /* 5 msec */ |
| 51 | #define SHARPSL_CHARGE_RETRY_CNT 1 /* eqv. 10 min */ |
| 52 | |
Richard Purdie | b7557de | 2006-01-05 20:44:55 +0000 | [diff] [blame] | 53 | /* |
| 54 | * Prototypes |
| 55 | */ |
| 56 | static int sharpsl_off_charge_battery(void); |
| 57 | static int sharpsl_check_battery_temp(void); |
| 58 | static int sharpsl_check_battery_voltage(void); |
| 59 | static int sharpsl_ac_check(void); |
| 60 | static int sharpsl_fatal_check(void); |
| 61 | static int sharpsl_average_value(int ad); |
| 62 | static void sharpsl_average_clear(void); |
| 63 | static void sharpsl_charge_toggle(void *private_); |
| 64 | static void sharpsl_battery_thread(void *private_); |
| 65 | |
| 66 | |
| 67 | /* |
| 68 | * Variables |
| 69 | */ |
| 70 | struct sharpsl_pm_status sharpsl_pm; |
| 71 | DECLARE_WORK(toggle_charger, sharpsl_charge_toggle, NULL); |
| 72 | DECLARE_WORK(sharpsl_bat, sharpsl_battery_thread, NULL); |
Richard Purdie | 181bf8a | 2006-03-31 02:31:08 -0800 | [diff] [blame] | 73 | DEFINE_LED_TRIGGER(sharpsl_charge_led_trigger); |
Richard Purdie | b7557de | 2006-01-05 20:44:55 +0000 | [diff] [blame] | 74 | |
| 75 | |
| 76 | static int get_percentage(int voltage) |
| 77 | { |
| 78 | int i = sharpsl_pm.machinfo->bat_levels - 1; |
Richard Purdie | f8703dc | 2006-06-19 19:58:52 +0100 | [diff] [blame] | 79 | int bl_status = sharpsl_pm.machinfo->backlight_get_status ? sharpsl_pm.machinfo->backlight_get_status() : 0; |
Richard Purdie | b7557de | 2006-01-05 20:44:55 +0000 | [diff] [blame] | 80 | struct battery_thresh *thresh; |
| 81 | |
| 82 | if (sharpsl_pm.charge_mode == CHRG_ON) |
Richard Purdie | f8703dc | 2006-06-19 19:58:52 +0100 | [diff] [blame] | 83 | thresh = bl_status ? sharpsl_pm.machinfo->bat_levels_acin_bl : sharpsl_pm.machinfo->bat_levels_acin; |
Richard Purdie | b7557de | 2006-01-05 20:44:55 +0000 | [diff] [blame] | 84 | else |
Richard Purdie | f8703dc | 2006-06-19 19:58:52 +0100 | [diff] [blame] | 85 | thresh = bl_status ? sharpsl_pm.machinfo->bat_levels_noac_bl : sharpsl_pm.machinfo->bat_levels_noac; |
Richard Purdie | b7557de | 2006-01-05 20:44:55 +0000 | [diff] [blame] | 86 | |
| 87 | while (i > 0 && (voltage > thresh[i].voltage)) |
| 88 | i--; |
| 89 | |
| 90 | return thresh[i].percentage; |
| 91 | } |
| 92 | |
| 93 | static int get_apm_status(int voltage) |
| 94 | { |
| 95 | int low_thresh, high_thresh; |
| 96 | |
| 97 | if (sharpsl_pm.charge_mode == CHRG_ON) { |
| 98 | high_thresh = sharpsl_pm.machinfo->status_high_acin; |
| 99 | low_thresh = sharpsl_pm.machinfo->status_low_acin; |
| 100 | } else { |
| 101 | high_thresh = sharpsl_pm.machinfo->status_high_noac; |
| 102 | low_thresh = sharpsl_pm.machinfo->status_low_noac; |
| 103 | } |
| 104 | |
| 105 | if (voltage >= high_thresh) |
| 106 | return APM_BATTERY_STATUS_HIGH; |
| 107 | if (voltage >= low_thresh) |
| 108 | return APM_BATTERY_STATUS_LOW; |
| 109 | return APM_BATTERY_STATUS_CRITICAL; |
| 110 | } |
| 111 | |
| 112 | void sharpsl_battery_kick(void) |
| 113 | { |
| 114 | schedule_delayed_work(&sharpsl_bat, msecs_to_jiffies(125)); |
| 115 | } |
| 116 | EXPORT_SYMBOL(sharpsl_battery_kick); |
| 117 | |
| 118 | |
| 119 | static void sharpsl_battery_thread(void *private_) |
| 120 | { |
| 121 | int voltage, percent, apm_status, i = 0; |
| 122 | |
| 123 | if (!sharpsl_pm.machinfo) |
| 124 | return; |
| 125 | |
| 126 | sharpsl_pm.battstat.ac_status = (sharpsl_pm.machinfo->read_devdata(SHARPSL_STATUS_ACIN) ? APM_AC_ONLINE : APM_AC_OFFLINE); |
| 127 | |
| 128 | /* Corgi cannot confirm when battery fully charged so periodically kick! */ |
Richard Purdie | f8703dc | 2006-06-19 19:58:52 +0100 | [diff] [blame] | 129 | if (!sharpsl_pm.machinfo->batfull_irq && (sharpsl_pm.charge_mode == CHRG_ON) |
Richard Purdie | b7557de | 2006-01-05 20:44:55 +0000 | [diff] [blame] | 130 | && time_after(jiffies, sharpsl_pm.charge_start_time + SHARPSL_CHARGE_ON_TIME_INTERVAL)) |
| 131 | schedule_work(&toggle_charger); |
| 132 | |
| 133 | while(1) { |
| 134 | voltage = sharpsl_pm.machinfo->read_devdata(SHARPSL_BATT_VOLT); |
| 135 | |
| 136 | if (voltage > 0) break; |
| 137 | if (i++ > 5) { |
| 138 | voltage = sharpsl_pm.machinfo->bat_levels_noac[0].voltage; |
| 139 | dev_warn(sharpsl_pm.dev, "Warning: Cannot read main battery!\n"); |
| 140 | break; |
| 141 | } |
| 142 | } |
| 143 | |
| 144 | voltage = sharpsl_average_value(voltage); |
| 145 | apm_status = get_apm_status(voltage); |
| 146 | percent = get_percentage(voltage); |
| 147 | |
| 148 | /* At low battery voltages, the voltage has a tendency to start |
| 149 | creeping back up so we try to avoid this here */ |
| 150 | if ((sharpsl_pm.battstat.ac_status == APM_AC_ONLINE) || (apm_status == APM_BATTERY_STATUS_HIGH) || percent <= sharpsl_pm.battstat.mainbat_percent) { |
| 151 | sharpsl_pm.battstat.mainbat_voltage = voltage; |
| 152 | sharpsl_pm.battstat.mainbat_status = apm_status; |
| 153 | sharpsl_pm.battstat.mainbat_percent = percent; |
| 154 | } |
| 155 | |
| 156 | dev_dbg(sharpsl_pm.dev, "Battery: voltage: %d, status: %d, percentage: %d, time: %d\n", voltage, |
| 157 | sharpsl_pm.battstat.mainbat_status, sharpsl_pm.battstat.mainbat_percent, jiffies); |
| 158 | |
| 159 | /* If battery is low. limit backlight intensity to save power. */ |
| 160 | if ((sharpsl_pm.battstat.ac_status != APM_AC_ONLINE) |
| 161 | && ((sharpsl_pm.battstat.mainbat_status == APM_BATTERY_STATUS_LOW) || |
| 162 | (sharpsl_pm.battstat.mainbat_status == APM_BATTERY_STATUS_CRITICAL))) { |
| 163 | if (!(sharpsl_pm.flags & SHARPSL_BL_LIMIT)) { |
Richard Purdie | f8703dc | 2006-06-19 19:58:52 +0100 | [diff] [blame] | 164 | sharpsl_pm.machinfo->backlight_limit(1); |
Richard Purdie | b7557de | 2006-01-05 20:44:55 +0000 | [diff] [blame] | 165 | sharpsl_pm.flags |= SHARPSL_BL_LIMIT; |
| 166 | } |
| 167 | } else if (sharpsl_pm.flags & SHARPSL_BL_LIMIT) { |
Richard Purdie | f8703dc | 2006-06-19 19:58:52 +0100 | [diff] [blame] | 168 | sharpsl_pm.machinfo->backlight_limit(0); |
Richard Purdie | b7557de | 2006-01-05 20:44:55 +0000 | [diff] [blame] | 169 | sharpsl_pm.flags &= ~SHARPSL_BL_LIMIT; |
| 170 | } |
| 171 | |
| 172 | /* Suspend if critical battery level */ |
| 173 | if ((sharpsl_pm.battstat.ac_status != APM_AC_ONLINE) |
| 174 | && (sharpsl_pm.battstat.mainbat_status == APM_BATTERY_STATUS_CRITICAL) |
| 175 | && !(sharpsl_pm.flags & SHARPSL_APM_QUEUED)) { |
| 176 | sharpsl_pm.flags |= SHARPSL_APM_QUEUED; |
| 177 | dev_err(sharpsl_pm.dev, "Fatal Off\n"); |
| 178 | apm_queue_event(APM_CRITICAL_SUSPEND); |
| 179 | } |
| 180 | |
| 181 | schedule_delayed_work(&sharpsl_bat, SHARPSL_BATCHK_TIME); |
| 182 | } |
| 183 | |
| 184 | void sharpsl_pm_led(int val) |
| 185 | { |
| 186 | if (val == SHARPSL_LED_ERROR) { |
| 187 | dev_err(sharpsl_pm.dev, "Charging Error!\n"); |
| 188 | } else if (val == SHARPSL_LED_ON) { |
| 189 | dev_dbg(sharpsl_pm.dev, "Charge LED On\n"); |
Richard Purdie | 181bf8a | 2006-03-31 02:31:08 -0800 | [diff] [blame] | 190 | led_trigger_event(sharpsl_charge_led_trigger, LED_FULL); |
Richard Purdie | b7557de | 2006-01-05 20:44:55 +0000 | [diff] [blame] | 191 | } else { |
| 192 | dev_dbg(sharpsl_pm.dev, "Charge LED Off\n"); |
Richard Purdie | 181bf8a | 2006-03-31 02:31:08 -0800 | [diff] [blame] | 193 | led_trigger_event(sharpsl_charge_led_trigger, LED_OFF); |
Richard Purdie | b7557de | 2006-01-05 20:44:55 +0000 | [diff] [blame] | 194 | } |
| 195 | } |
| 196 | |
| 197 | static void sharpsl_charge_on(void) |
| 198 | { |
| 199 | dev_dbg(sharpsl_pm.dev, "Turning Charger On\n"); |
| 200 | |
| 201 | sharpsl_pm.full_count = 0; |
| 202 | sharpsl_pm.charge_mode = CHRG_ON; |
| 203 | schedule_delayed_work(&toggle_charger, msecs_to_jiffies(250)); |
| 204 | schedule_delayed_work(&sharpsl_bat, msecs_to_jiffies(500)); |
| 205 | } |
| 206 | |
| 207 | static void sharpsl_charge_off(void) |
| 208 | { |
| 209 | dev_dbg(sharpsl_pm.dev, "Turning Charger Off\n"); |
| 210 | |
| 211 | sharpsl_pm.machinfo->charge(0); |
| 212 | sharpsl_pm_led(SHARPSL_LED_OFF); |
| 213 | sharpsl_pm.charge_mode = CHRG_OFF; |
| 214 | |
| 215 | schedule_work(&sharpsl_bat); |
| 216 | } |
| 217 | |
| 218 | static void sharpsl_charge_error(void) |
| 219 | { |
| 220 | sharpsl_pm_led(SHARPSL_LED_ERROR); |
| 221 | sharpsl_pm.machinfo->charge(0); |
| 222 | sharpsl_pm.charge_mode = CHRG_ERROR; |
| 223 | } |
| 224 | |
| 225 | static void sharpsl_charge_toggle(void *private_) |
| 226 | { |
| 227 | dev_dbg(sharpsl_pm.dev, "Toogling Charger at time: %lx\n", jiffies); |
| 228 | |
| 229 | if (!sharpsl_pm.machinfo->read_devdata(SHARPSL_STATUS_ACIN)) { |
| 230 | sharpsl_charge_off(); |
| 231 | return; |
| 232 | } else if ((sharpsl_check_battery_temp() < 0) || (sharpsl_ac_check() < 0)) { |
| 233 | sharpsl_charge_error(); |
| 234 | return; |
| 235 | } |
| 236 | |
| 237 | sharpsl_pm_led(SHARPSL_LED_ON); |
| 238 | sharpsl_pm.machinfo->charge(0); |
| 239 | mdelay(SHARPSL_CHARGE_WAIT_TIME); |
| 240 | sharpsl_pm.machinfo->charge(1); |
| 241 | |
| 242 | sharpsl_pm.charge_start_time = jiffies; |
| 243 | } |
| 244 | |
| 245 | static void sharpsl_ac_timer(unsigned long data) |
| 246 | { |
| 247 | int acin = sharpsl_pm.machinfo->read_devdata(SHARPSL_STATUS_ACIN); |
| 248 | |
| 249 | dev_dbg(sharpsl_pm.dev, "AC Status: %d\n",acin); |
| 250 | |
| 251 | sharpsl_average_clear(); |
| 252 | if (acin && (sharpsl_pm.charge_mode != CHRG_ON)) |
| 253 | sharpsl_charge_on(); |
| 254 | else if (sharpsl_pm.charge_mode == CHRG_ON) |
| 255 | sharpsl_charge_off(); |
| 256 | |
| 257 | schedule_work(&sharpsl_bat); |
| 258 | } |
| 259 | |
| 260 | |
| 261 | irqreturn_t sharpsl_ac_isr(int irq, void *dev_id, struct pt_regs *fp) |
| 262 | { |
| 263 | /* Delay the event slightly to debounce */ |
| 264 | /* Must be a smaller delay than the chrg_full_isr below */ |
| 265 | mod_timer(&sharpsl_pm.ac_timer, jiffies + msecs_to_jiffies(250)); |
| 266 | |
| 267 | return IRQ_HANDLED; |
| 268 | } |
| 269 | |
| 270 | static void sharpsl_chrg_full_timer(unsigned long data) |
| 271 | { |
| 272 | dev_dbg(sharpsl_pm.dev, "Charge Full at time: %lx\n", jiffies); |
| 273 | |
| 274 | sharpsl_pm.full_count++; |
| 275 | |
| 276 | if (!sharpsl_pm.machinfo->read_devdata(SHARPSL_STATUS_ACIN)) { |
| 277 | dev_dbg(sharpsl_pm.dev, "Charge Full: AC removed - stop charging!\n"); |
| 278 | if (sharpsl_pm.charge_mode == CHRG_ON) |
| 279 | sharpsl_charge_off(); |
| 280 | } else if (sharpsl_pm.full_count < 2) { |
| 281 | dev_dbg(sharpsl_pm.dev, "Charge Full: Count too low\n"); |
| 282 | schedule_work(&toggle_charger); |
| 283 | } else if (time_after(jiffies, sharpsl_pm.charge_start_time + SHARPSL_CHARGE_FINISH_TIME)) { |
| 284 | dev_dbg(sharpsl_pm.dev, "Charge Full: Interrupt generated too slowly - retry.\n"); |
| 285 | schedule_work(&toggle_charger); |
| 286 | } else { |
| 287 | sharpsl_charge_off(); |
| 288 | sharpsl_pm.charge_mode = CHRG_DONE; |
| 289 | dev_dbg(sharpsl_pm.dev, "Charge Full: Charging Finished\n"); |
| 290 | } |
| 291 | } |
| 292 | |
| 293 | /* Charging Finished Interrupt (Not present on Corgi) */ |
| 294 | /* Can trigger at the same time as an AC staus change so |
| 295 | delay until after that has been processed */ |
| 296 | irqreturn_t sharpsl_chrg_full_isr(int irq, void *dev_id, struct pt_regs *fp) |
| 297 | { |
| 298 | if (sharpsl_pm.flags & SHARPSL_SUSPENDED) |
| 299 | return IRQ_HANDLED; |
| 300 | |
| 301 | /* delay until after any ac interrupt */ |
| 302 | mod_timer(&sharpsl_pm.chrg_full_timer, jiffies + msecs_to_jiffies(500)); |
| 303 | |
| 304 | return IRQ_HANDLED; |
| 305 | } |
| 306 | |
| 307 | irqreturn_t sharpsl_fatal_isr(int irq, void *dev_id, struct pt_regs *fp) |
| 308 | { |
| 309 | int is_fatal = 0; |
| 310 | |
| 311 | if (!sharpsl_pm.machinfo->read_devdata(SHARPSL_STATUS_LOCK)) { |
| 312 | dev_err(sharpsl_pm.dev, "Battery now Unlocked! Suspending.\n"); |
| 313 | is_fatal = 1; |
| 314 | } |
| 315 | |
| 316 | if (!sharpsl_pm.machinfo->read_devdata(SHARPSL_STATUS_FATAL)) { |
| 317 | dev_err(sharpsl_pm.dev, "Fatal Batt Error! Suspending.\n"); |
| 318 | is_fatal = 1; |
| 319 | } |
| 320 | |
| 321 | if (!(sharpsl_pm.flags & SHARPSL_APM_QUEUED) && is_fatal) { |
| 322 | sharpsl_pm.flags |= SHARPSL_APM_QUEUED; |
| 323 | apm_queue_event(APM_CRITICAL_SUSPEND); |
| 324 | } |
| 325 | |
| 326 | return IRQ_HANDLED; |
| 327 | } |
| 328 | |
| 329 | /* |
| 330 | * Maintain an average of the last 10 readings |
| 331 | */ |
| 332 | #define SHARPSL_CNV_VALUE_NUM 10 |
| 333 | static int sharpsl_ad_index; |
| 334 | |
| 335 | static void sharpsl_average_clear(void) |
| 336 | { |
| 337 | sharpsl_ad_index = 0; |
| 338 | } |
| 339 | |
| 340 | static int sharpsl_average_value(int ad) |
| 341 | { |
| 342 | int i, ad_val = 0; |
| 343 | static int sharpsl_ad[SHARPSL_CNV_VALUE_NUM+1]; |
| 344 | |
| 345 | if (sharpsl_pm.battstat.mainbat_status != APM_BATTERY_STATUS_HIGH) { |
| 346 | sharpsl_ad_index = 0; |
| 347 | return ad; |
| 348 | } |
| 349 | |
| 350 | sharpsl_ad[sharpsl_ad_index] = ad; |
| 351 | sharpsl_ad_index++; |
| 352 | if (sharpsl_ad_index >= SHARPSL_CNV_VALUE_NUM) { |
| 353 | for (i=0; i < (SHARPSL_CNV_VALUE_NUM-1); i++) |
| 354 | sharpsl_ad[i] = sharpsl_ad[i+1]; |
| 355 | sharpsl_ad_index = SHARPSL_CNV_VALUE_NUM - 1; |
| 356 | } |
| 357 | for (i=0; i < sharpsl_ad_index; i++) |
| 358 | ad_val += sharpsl_ad[i]; |
| 359 | |
| 360 | return (ad_val / sharpsl_ad_index); |
| 361 | } |
| 362 | |
| 363 | /* |
| 364 | * Take an array of 5 integers, remove the maximum and minimum values |
| 365 | * and return the average. |
| 366 | */ |
| 367 | static int get_select_val(int *val) |
| 368 | { |
| 369 | int i, j, k, temp, sum = 0; |
| 370 | |
| 371 | /* Find MAX val */ |
| 372 | temp = val[0]; |
| 373 | j=0; |
| 374 | for (i=1; i<5; i++) { |
| 375 | if (temp < val[i]) { |
| 376 | temp = val[i]; |
| 377 | j = i; |
| 378 | } |
| 379 | } |
| 380 | |
| 381 | /* Find MIN val */ |
| 382 | temp = val[4]; |
| 383 | k=4; |
| 384 | for (i=3; i>=0; i--) { |
| 385 | if (temp > val[i]) { |
| 386 | temp = val[i]; |
| 387 | k = i; |
| 388 | } |
| 389 | } |
| 390 | |
| 391 | for (i=0; i<5; i++) |
| 392 | if (i != j && i != k ) |
| 393 | sum += val[i]; |
| 394 | |
| 395 | dev_dbg(sharpsl_pm.dev, "Average: %d from values: %d, %d, %d, %d, %d\n", sum/3, val[0], val[1], val[2], val[3], val[4]); |
| 396 | |
| 397 | return (sum/3); |
| 398 | } |
| 399 | |
| 400 | static int sharpsl_check_battery_temp(void) |
| 401 | { |
| 402 | int val, i, buff[5]; |
| 403 | |
| 404 | /* Check battery temperature */ |
| 405 | for (i=0; i<5; i++) { |
| 406 | mdelay(SHARPSL_CHECK_BATTERY_WAIT_TIME_TEMP); |
| 407 | sharpsl_pm.machinfo->measure_temp(1); |
| 408 | mdelay(SHARPSL_CHECK_BATTERY_WAIT_TIME_TEMP); |
| 409 | buff[i] = sharpsl_pm.machinfo->read_devdata(SHARPSL_BATT_TEMP); |
| 410 | sharpsl_pm.machinfo->measure_temp(0); |
| 411 | } |
| 412 | |
| 413 | val = get_select_val(buff); |
| 414 | |
| 415 | dev_dbg(sharpsl_pm.dev, "Temperature: %d\n", val); |
Pavel Machek | 2704f0e | 2006-07-11 22:56:14 +0100 | [diff] [blame] | 416 | if (val > sharpsl_pm.machinfo->charge_on_temp) { |
| 417 | printk(KERN_WARNING "Not charging: temperature out of limits.\n"); |
Richard Purdie | b7557de | 2006-01-05 20:44:55 +0000 | [diff] [blame] | 418 | return -1; |
Pavel Machek | 2704f0e | 2006-07-11 22:56:14 +0100 | [diff] [blame] | 419 | } |
Richard Purdie | b7557de | 2006-01-05 20:44:55 +0000 | [diff] [blame] | 420 | |
| 421 | return 0; |
| 422 | } |
| 423 | |
| 424 | static int sharpsl_check_battery_voltage(void) |
| 425 | { |
| 426 | int val, i, buff[5]; |
| 427 | |
| 428 | /* disable charge, enable discharge */ |
| 429 | sharpsl_pm.machinfo->charge(0); |
| 430 | sharpsl_pm.machinfo->discharge(1); |
| 431 | mdelay(SHARPSL_WAIT_DISCHARGE_ON); |
| 432 | |
| 433 | if (sharpsl_pm.machinfo->discharge1) |
| 434 | sharpsl_pm.machinfo->discharge1(1); |
| 435 | |
| 436 | /* Check battery voltage */ |
| 437 | for (i=0; i<5; i++) { |
| 438 | buff[i] = sharpsl_pm.machinfo->read_devdata(SHARPSL_BATT_VOLT); |
| 439 | mdelay(SHARPSL_CHECK_BATTERY_WAIT_TIME_VOLT); |
| 440 | } |
| 441 | |
| 442 | if (sharpsl_pm.machinfo->discharge1) |
| 443 | sharpsl_pm.machinfo->discharge1(0); |
| 444 | |
| 445 | sharpsl_pm.machinfo->discharge(0); |
| 446 | |
| 447 | val = get_select_val(buff); |
| 448 | dev_dbg(sharpsl_pm.dev, "Battery Voltage: %d\n", val); |
| 449 | |
Richard Purdie | f8703dc | 2006-06-19 19:58:52 +0100 | [diff] [blame] | 450 | if (val < sharpsl_pm.machinfo->charge_on_volt) |
Richard Purdie | b7557de | 2006-01-05 20:44:55 +0000 | [diff] [blame] | 451 | return -1; |
| 452 | |
| 453 | return 0; |
| 454 | } |
| 455 | |
| 456 | static int sharpsl_ac_check(void) |
| 457 | { |
| 458 | int temp, i, buff[5]; |
| 459 | |
| 460 | for (i=0; i<5; i++) { |
| 461 | buff[i] = sharpsl_pm.machinfo->read_devdata(SHARPSL_ACIN_VOLT); |
| 462 | mdelay(SHARPSL_CHECK_BATTERY_WAIT_TIME_ACIN); |
| 463 | } |
| 464 | |
| 465 | temp = get_select_val(buff); |
| 466 | dev_dbg(sharpsl_pm.dev, "AC Voltage: %d\n",temp); |
| 467 | |
Richard Purdie | f8703dc | 2006-06-19 19:58:52 +0100 | [diff] [blame] | 468 | if ((temp > sharpsl_pm.machinfo->charge_acin_high) || (temp < sharpsl_pm.machinfo->charge_acin_low)) { |
Richard Purdie | b7557de | 2006-01-05 20:44:55 +0000 | [diff] [blame] | 469 | dev_err(sharpsl_pm.dev, "Error: AC check failed.\n"); |
| 470 | return -1; |
| 471 | } |
| 472 | |
| 473 | return 0; |
| 474 | } |
| 475 | |
| 476 | #ifdef CONFIG_PM |
| 477 | static int sharpsl_pm_suspend(struct platform_device *pdev, pm_message_t state) |
| 478 | { |
| 479 | sharpsl_pm.flags |= SHARPSL_SUSPENDED; |
| 480 | flush_scheduled_work(); |
| 481 | |
| 482 | if (sharpsl_pm.charge_mode == CHRG_ON) |
| 483 | sharpsl_pm.flags |= SHARPSL_DO_OFFLINE_CHRG; |
| 484 | else |
| 485 | sharpsl_pm.flags &= ~SHARPSL_DO_OFFLINE_CHRG; |
| 486 | |
| 487 | return 0; |
| 488 | } |
| 489 | |
| 490 | static int sharpsl_pm_resume(struct platform_device *pdev) |
| 491 | { |
| 492 | /* Clear the reset source indicators as they break the bootloader upon reboot */ |
| 493 | RCSR = 0x0f; |
| 494 | sharpsl_average_clear(); |
| 495 | sharpsl_pm.flags &= ~SHARPSL_APM_QUEUED; |
| 496 | sharpsl_pm.flags &= ~SHARPSL_SUSPENDED; |
| 497 | |
| 498 | return 0; |
| 499 | } |
| 500 | |
| 501 | static void corgi_goto_sleep(unsigned long alarm_time, unsigned int alarm_enable, suspend_state_t state) |
| 502 | { |
| 503 | dev_dbg(sharpsl_pm.dev, "Time is: %08x\n",RCNR); |
| 504 | |
| 505 | dev_dbg(sharpsl_pm.dev, "Offline Charge Activate = %d\n",sharpsl_pm.flags & SHARPSL_DO_OFFLINE_CHRG); |
| 506 | /* not charging and AC-IN! */ |
| 507 | |
| 508 | if ((sharpsl_pm.flags & SHARPSL_DO_OFFLINE_CHRG) && (sharpsl_pm.machinfo->read_devdata(SHARPSL_STATUS_ACIN))) { |
| 509 | dev_dbg(sharpsl_pm.dev, "Activating Offline Charger...\n"); |
| 510 | sharpsl_pm.charge_mode = CHRG_OFF; |
| 511 | sharpsl_pm.flags &= ~SHARPSL_DO_OFFLINE_CHRG; |
| 512 | sharpsl_off_charge_battery(); |
| 513 | } |
| 514 | |
| 515 | sharpsl_pm.machinfo->presuspend(); |
| 516 | |
| 517 | PEDR = 0xffffffff; /* clear it */ |
| 518 | |
| 519 | sharpsl_pm.flags &= ~SHARPSL_ALARM_ACTIVE; |
| 520 | if ((sharpsl_pm.charge_mode == CHRG_ON) && ((alarm_enable && ((alarm_time - RCNR) > (SHARPSL_BATCHK_TIME_SUSPEND + 30))) || !alarm_enable)) { |
| 521 | RTSR &= RTSR_ALE; |
| 522 | RTAR = RCNR + SHARPSL_BATCHK_TIME_SUSPEND; |
| 523 | dev_dbg(sharpsl_pm.dev, "Charging alarm at: %08x\n",RTAR); |
| 524 | sharpsl_pm.flags |= SHARPSL_ALARM_ACTIVE; |
| 525 | } else if (alarm_enable) { |
| 526 | RTSR &= RTSR_ALE; |
| 527 | RTAR = alarm_time; |
| 528 | dev_dbg(sharpsl_pm.dev, "User alarm at: %08x\n",RTAR); |
| 529 | } else { |
| 530 | dev_dbg(sharpsl_pm.dev, "No alarms set.\n"); |
| 531 | } |
| 532 | |
| 533 | pxa_pm_enter(state); |
| 534 | |
| 535 | sharpsl_pm.machinfo->postsuspend(); |
| 536 | |
| 537 | dev_dbg(sharpsl_pm.dev, "Corgi woken up from suspend: %08x\n",PEDR); |
| 538 | } |
| 539 | |
| 540 | static int corgi_enter_suspend(unsigned long alarm_time, unsigned int alarm_enable, suspend_state_t state) |
| 541 | { |
| 542 | if (!sharpsl_pm.machinfo->should_wakeup(!(sharpsl_pm.flags & SHARPSL_ALARM_ACTIVE) && alarm_enable) ) |
| 543 | { |
| 544 | if (!(sharpsl_pm.flags & SHARPSL_ALARM_ACTIVE)) { |
| 545 | dev_dbg(sharpsl_pm.dev, "No user triggered wakeup events and not charging. Strange. Suspend.\n"); |
| 546 | corgi_goto_sleep(alarm_time, alarm_enable, state); |
| 547 | return 1; |
| 548 | } |
| 549 | if(sharpsl_off_charge_battery()) { |
| 550 | dev_dbg(sharpsl_pm.dev, "Charging. Suspend...\n"); |
| 551 | corgi_goto_sleep(alarm_time, alarm_enable, state); |
| 552 | return 1; |
| 553 | } |
| 554 | dev_dbg(sharpsl_pm.dev, "User triggered wakeup in offline charger.\n"); |
| 555 | } |
| 556 | |
| 557 | if ((!sharpsl_pm.machinfo->read_devdata(SHARPSL_STATUS_LOCK)) || (sharpsl_fatal_check() < 0) ) |
| 558 | { |
| 559 | dev_err(sharpsl_pm.dev, "Fatal condition. Suspend.\n"); |
| 560 | corgi_goto_sleep(alarm_time, alarm_enable, state); |
| 561 | return 1; |
| 562 | } |
| 563 | |
| 564 | return 0; |
| 565 | } |
| 566 | |
| 567 | static int corgi_pxa_pm_enter(suspend_state_t state) |
| 568 | { |
| 569 | unsigned long alarm_time = RTAR; |
| 570 | unsigned int alarm_status = ((RTSR & RTSR_ALE) != 0); |
| 571 | |
| 572 | dev_dbg(sharpsl_pm.dev, "SharpSL suspending for first time.\n"); |
| 573 | |
| 574 | corgi_goto_sleep(alarm_time, alarm_status, state); |
| 575 | |
| 576 | while (corgi_enter_suspend(alarm_time,alarm_status,state)) |
| 577 | {} |
| 578 | |
Dirk Opfer | 576b3ef | 2006-09-25 22:51:02 +0100 | [diff] [blame] | 579 | if (sharpsl_pm.machinfo->earlyresume) |
| 580 | sharpsl_pm.machinfo->earlyresume(); |
| 581 | |
Richard Purdie | b7557de | 2006-01-05 20:44:55 +0000 | [diff] [blame] | 582 | dev_dbg(sharpsl_pm.dev, "SharpSL resuming...\n"); |
| 583 | |
| 584 | return 0; |
| 585 | } |
| 586 | #endif |
| 587 | |
| 588 | |
| 589 | /* |
| 590 | * Check for fatal battery errors |
| 591 | * Fatal returns -1 |
| 592 | */ |
| 593 | static int sharpsl_fatal_check(void) |
| 594 | { |
| 595 | int buff[5], temp, i, acin; |
| 596 | |
| 597 | dev_dbg(sharpsl_pm.dev, "sharpsl_fatal_check entered\n"); |
| 598 | |
| 599 | /* Check AC-Adapter */ |
| 600 | acin = sharpsl_pm.machinfo->read_devdata(SHARPSL_STATUS_ACIN); |
| 601 | |
| 602 | if (acin && (sharpsl_pm.charge_mode == CHRG_ON)) { |
| 603 | sharpsl_pm.machinfo->charge(0); |
| 604 | udelay(100); |
| 605 | sharpsl_pm.machinfo->discharge(1); /* enable discharge */ |
| 606 | mdelay(SHARPSL_WAIT_DISCHARGE_ON); |
| 607 | } |
| 608 | |
| 609 | if (sharpsl_pm.machinfo->discharge1) |
| 610 | sharpsl_pm.machinfo->discharge1(1); |
| 611 | |
| 612 | /* Check battery : check inserting battery ? */ |
| 613 | for (i=0; i<5; i++) { |
| 614 | buff[i] = sharpsl_pm.machinfo->read_devdata(SHARPSL_BATT_VOLT); |
| 615 | mdelay(SHARPSL_CHECK_BATTERY_WAIT_TIME_VOLT); |
| 616 | } |
| 617 | |
| 618 | if (sharpsl_pm.machinfo->discharge1) |
| 619 | sharpsl_pm.machinfo->discharge1(0); |
| 620 | |
| 621 | if (acin && (sharpsl_pm.charge_mode == CHRG_ON)) { |
| 622 | udelay(100); |
| 623 | sharpsl_pm.machinfo->charge(1); |
| 624 | sharpsl_pm.machinfo->discharge(0); |
| 625 | } |
| 626 | |
| 627 | temp = get_select_val(buff); |
| 628 | dev_dbg(sharpsl_pm.dev, "sharpsl_fatal_check: acin: %d, discharge voltage: %d, no discharge: %d\n", acin, temp, sharpsl_pm.machinfo->read_devdata(SHARPSL_BATT_VOLT)); |
| 629 | |
Richard Purdie | f8703dc | 2006-06-19 19:58:52 +0100 | [diff] [blame] | 630 | if ((acin && (temp < sharpsl_pm.machinfo->fatal_acin_volt)) || |
| 631 | (!acin && (temp < sharpsl_pm.machinfo->fatal_noacin_volt))) |
Richard Purdie | b7557de | 2006-01-05 20:44:55 +0000 | [diff] [blame] | 632 | return -1; |
| 633 | return 0; |
| 634 | } |
| 635 | |
| 636 | static int sharpsl_off_charge_error(void) |
| 637 | { |
| 638 | dev_err(sharpsl_pm.dev, "Offline Charger: Error occured.\n"); |
| 639 | sharpsl_pm.machinfo->charge(0); |
| 640 | sharpsl_pm_led(SHARPSL_LED_ERROR); |
| 641 | sharpsl_pm.charge_mode = CHRG_ERROR; |
| 642 | return 1; |
| 643 | } |
| 644 | |
| 645 | /* |
| 646 | * Charging Control while suspended |
| 647 | * Return 1 - go straight to sleep |
| 648 | * Return 0 - sleep or wakeup depending on other factors |
| 649 | */ |
| 650 | static int sharpsl_off_charge_battery(void) |
| 651 | { |
| 652 | int time; |
| 653 | |
| 654 | dev_dbg(sharpsl_pm.dev, "Charge Mode: %d\n", sharpsl_pm.charge_mode); |
| 655 | |
| 656 | if (sharpsl_pm.charge_mode == CHRG_OFF) { |
| 657 | dev_dbg(sharpsl_pm.dev, "Offline Charger: Step 1\n"); |
| 658 | |
| 659 | /* AC Check */ |
| 660 | if ((sharpsl_ac_check() < 0) || (sharpsl_check_battery_temp() < 0)) |
| 661 | return sharpsl_off_charge_error(); |
| 662 | |
| 663 | /* Start Charging */ |
| 664 | sharpsl_pm_led(SHARPSL_LED_ON); |
| 665 | sharpsl_pm.machinfo->charge(0); |
| 666 | mdelay(SHARPSL_CHARGE_WAIT_TIME); |
| 667 | sharpsl_pm.machinfo->charge(1); |
| 668 | |
| 669 | sharpsl_pm.charge_mode = CHRG_ON; |
| 670 | sharpsl_pm.full_count = 0; |
| 671 | |
| 672 | return 1; |
| 673 | } else if (sharpsl_pm.charge_mode != CHRG_ON) { |
| 674 | return 1; |
| 675 | } |
| 676 | |
| 677 | if (sharpsl_pm.full_count == 0) { |
| 678 | int time; |
| 679 | |
| 680 | dev_dbg(sharpsl_pm.dev, "Offline Charger: Step 2\n"); |
| 681 | |
| 682 | if ((sharpsl_check_battery_temp() < 0) || (sharpsl_check_battery_voltage() < 0)) |
| 683 | return sharpsl_off_charge_error(); |
| 684 | |
| 685 | sharpsl_pm.machinfo->charge(0); |
| 686 | mdelay(SHARPSL_CHARGE_WAIT_TIME); |
| 687 | sharpsl_pm.machinfo->charge(1); |
| 688 | sharpsl_pm.charge_mode = CHRG_ON; |
| 689 | |
| 690 | mdelay(SHARPSL_CHARGE_CO_CHECK_TIME); |
| 691 | |
| 692 | time = RCNR; |
| 693 | while(1) { |
| 694 | /* Check if any wakeup event had occured */ |
| 695 | if (sharpsl_pm.machinfo->charger_wakeup() != 0) |
| 696 | return 0; |
| 697 | /* Check for timeout */ |
| 698 | if ((RCNR - time) > SHARPSL_WAIT_CO_TIME) |
| 699 | return 1; |
| 700 | if (sharpsl_pm.machinfo->read_devdata(SHARPSL_STATUS_CHRGFULL)) { |
| 701 | dev_dbg(sharpsl_pm.dev, "Offline Charger: Charge full occured. Retrying to check\n"); |
| 702 | sharpsl_pm.full_count++; |
| 703 | sharpsl_pm.machinfo->charge(0); |
| 704 | mdelay(SHARPSL_CHARGE_WAIT_TIME); |
| 705 | sharpsl_pm.machinfo->charge(1); |
| 706 | return 1; |
| 707 | } |
| 708 | } |
| 709 | } |
| 710 | |
| 711 | dev_dbg(sharpsl_pm.dev, "Offline Charger: Step 3\n"); |
| 712 | |
| 713 | mdelay(SHARPSL_CHARGE_CO_CHECK_TIME); |
| 714 | |
| 715 | time = RCNR; |
| 716 | while(1) { |
| 717 | /* Check if any wakeup event had occured */ |
| 718 | if (sharpsl_pm.machinfo->charger_wakeup() != 0) |
| 719 | return 0; |
| 720 | /* Check for timeout */ |
| 721 | if ((RCNR-time) > SHARPSL_WAIT_CO_TIME) { |
| 722 | if (sharpsl_pm.full_count > SHARPSL_CHARGE_RETRY_CNT) { |
| 723 | dev_dbg(sharpsl_pm.dev, "Offline Charger: Not charged sufficiently. Retrying.\n"); |
| 724 | sharpsl_pm.full_count = 0; |
| 725 | } |
| 726 | sharpsl_pm.full_count++; |
| 727 | return 1; |
| 728 | } |
| 729 | if (sharpsl_pm.machinfo->read_devdata(SHARPSL_STATUS_CHRGFULL)) { |
| 730 | dev_dbg(sharpsl_pm.dev, "Offline Charger: Charging complete.\n"); |
| 731 | sharpsl_pm_led(SHARPSL_LED_OFF); |
| 732 | sharpsl_pm.machinfo->charge(0); |
| 733 | sharpsl_pm.charge_mode = CHRG_DONE; |
| 734 | return 1; |
| 735 | } |
| 736 | } |
| 737 | } |
| 738 | |
| 739 | |
| 740 | static ssize_t battery_percentage_show(struct device *dev, struct device_attribute *attr, char *buf) |
| 741 | { |
| 742 | return sprintf(buf, "%d\n",sharpsl_pm.battstat.mainbat_percent); |
| 743 | } |
| 744 | |
| 745 | static ssize_t battery_voltage_show(struct device *dev, struct device_attribute *attr, char *buf) |
| 746 | { |
| 747 | return sprintf(buf, "%d\n",sharpsl_pm.battstat.mainbat_voltage); |
| 748 | } |
| 749 | |
| 750 | static DEVICE_ATTR(battery_percentage, 0444, battery_percentage_show, NULL); |
| 751 | static DEVICE_ATTR(battery_voltage, 0444, battery_voltage_show, NULL); |
| 752 | |
| 753 | extern void (*apm_get_power_status)(struct apm_power_info *); |
| 754 | |
| 755 | static void sharpsl_apm_get_power_status(struct apm_power_info *info) |
| 756 | { |
| 757 | info->ac_line_status = sharpsl_pm.battstat.ac_status; |
| 758 | |
| 759 | if (sharpsl_pm.charge_mode == CHRG_ON) |
| 760 | info->battery_status = APM_BATTERY_STATUS_CHARGING; |
| 761 | else |
| 762 | info->battery_status = sharpsl_pm.battstat.mainbat_status; |
| 763 | |
| 764 | info->battery_flag = (1 << info->battery_status); |
| 765 | info->battery_life = sharpsl_pm.battstat.mainbat_percent; |
| 766 | } |
| 767 | |
| 768 | static struct pm_ops sharpsl_pm_ops = { |
| 769 | .pm_disk_mode = PM_DISK_FIRMWARE, |
| 770 | .prepare = pxa_pm_prepare, |
| 771 | .enter = corgi_pxa_pm_enter, |
| 772 | .finish = pxa_pm_finish, |
| 773 | }; |
| 774 | |
| 775 | static int __init sharpsl_pm_probe(struct platform_device *pdev) |
| 776 | { |
| 777 | if (!pdev->dev.platform_data) |
| 778 | return -EINVAL; |
| 779 | |
| 780 | sharpsl_pm.dev = &pdev->dev; |
| 781 | sharpsl_pm.machinfo = pdev->dev.platform_data; |
| 782 | sharpsl_pm.charge_mode = CHRG_OFF; |
| 783 | sharpsl_pm.flags = 0; |
| 784 | |
| 785 | init_timer(&sharpsl_pm.ac_timer); |
| 786 | sharpsl_pm.ac_timer.function = sharpsl_ac_timer; |
| 787 | |
| 788 | init_timer(&sharpsl_pm.chrg_full_timer); |
| 789 | sharpsl_pm.chrg_full_timer.function = sharpsl_chrg_full_timer; |
| 790 | |
Richard Purdie | 181bf8a | 2006-03-31 02:31:08 -0800 | [diff] [blame] | 791 | led_trigger_register_simple("sharpsl-charge", &sharpsl_charge_led_trigger); |
| 792 | |
Richard Purdie | b7557de | 2006-01-05 20:44:55 +0000 | [diff] [blame] | 793 | sharpsl_pm.machinfo->init(); |
| 794 | |
| 795 | device_create_file(&pdev->dev, &dev_attr_battery_percentage); |
| 796 | device_create_file(&pdev->dev, &dev_attr_battery_voltage); |
| 797 | |
| 798 | apm_get_power_status = sharpsl_apm_get_power_status; |
| 799 | |
| 800 | pm_set_ops(&sharpsl_pm_ops); |
| 801 | |
| 802 | mod_timer(&sharpsl_pm.ac_timer, jiffies + msecs_to_jiffies(250)); |
| 803 | |
| 804 | return 0; |
| 805 | } |
| 806 | |
| 807 | static int sharpsl_pm_remove(struct platform_device *pdev) |
| 808 | { |
| 809 | pm_set_ops(NULL); |
| 810 | |
| 811 | device_remove_file(&pdev->dev, &dev_attr_battery_percentage); |
| 812 | device_remove_file(&pdev->dev, &dev_attr_battery_voltage); |
| 813 | |
Richard Purdie | 181bf8a | 2006-03-31 02:31:08 -0800 | [diff] [blame] | 814 | led_trigger_unregister_simple(sharpsl_charge_led_trigger); |
| 815 | |
Richard Purdie | b7557de | 2006-01-05 20:44:55 +0000 | [diff] [blame] | 816 | sharpsl_pm.machinfo->exit(); |
| 817 | |
| 818 | del_timer_sync(&sharpsl_pm.chrg_full_timer); |
| 819 | del_timer_sync(&sharpsl_pm.ac_timer); |
| 820 | |
| 821 | return 0; |
| 822 | } |
| 823 | |
| 824 | static struct platform_driver sharpsl_pm_driver = { |
| 825 | .probe = sharpsl_pm_probe, |
| 826 | .remove = sharpsl_pm_remove, |
| 827 | .suspend = sharpsl_pm_suspend, |
| 828 | .resume = sharpsl_pm_resume, |
| 829 | .driver = { |
| 830 | .name = "sharpsl-pm", |
| 831 | }, |
| 832 | }; |
| 833 | |
| 834 | static int __devinit sharpsl_pm_init(void) |
| 835 | { |
| 836 | return platform_driver_register(&sharpsl_pm_driver); |
| 837 | } |
| 838 | |
| 839 | static void sharpsl_pm_exit(void) |
| 840 | { |
| 841 | platform_driver_unregister(&sharpsl_pm_driver); |
| 842 | } |
| 843 | |
| 844 | late_initcall(sharpsl_pm_init); |
| 845 | module_exit(sharpsl_pm_exit); |