David Brownell | 72cd799 | 2005-05-24 17:34:51 -0700 | [diff] [blame] | 1 | /* |
| 2 | * tps65010 - driver for tps6501x power management chips |
| 3 | * |
| 4 | * Copyright (C) 2004 Texas Instruments |
| 5 | * Copyright (C) 2004-2005 David Brownell |
| 6 | * |
| 7 | * This program is free software; you can redistribute it and/or modify |
| 8 | * it under the terms of the GNU General Public License as published by |
| 9 | * the Free Software Foundation; either version 2 of the License, or |
| 10 | * (at your option) any later version. |
| 11 | * |
| 12 | * This program is distributed in the hope that it will be useful, |
| 13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 15 | * GNU General Public License for more details. |
| 16 | * |
| 17 | * You should have received a copy of the GNU General Public License |
| 18 | * along with this program; if not, write to the Free Software |
| 19 | * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. |
| 20 | */ |
David Brownell | 72cd799 | 2005-05-24 17:34:51 -0700 | [diff] [blame] | 21 | |
David Brownell | 72cd799 | 2005-05-24 17:34:51 -0700 | [diff] [blame] | 22 | #include <linux/kernel.h> |
| 23 | #include <linux/module.h> |
| 24 | #include <linux/init.h> |
| 25 | #include <linux/slab.h> |
| 26 | #include <linux/interrupt.h> |
| 27 | #include <linux/device.h> |
| 28 | #include <linux/i2c.h> |
| 29 | #include <linux/delay.h> |
| 30 | #include <linux/workqueue.h> |
| 31 | #include <linux/suspend.h> |
| 32 | #include <linux/debugfs.h> |
| 33 | #include <linux/seq_file.h> |
Ingo Molnar | 5c085d3 | 2006-01-18 23:16:04 +0100 | [diff] [blame] | 34 | #include <linux/mutex.h> |
David Brownell | 72cd799 | 2005-05-24 17:34:51 -0700 | [diff] [blame] | 35 | |
| 36 | #include <asm/irq.h> |
| 37 | #include <asm/mach-types.h> |
| 38 | |
| 39 | #include <asm/arch/gpio.h> |
| 40 | #include <asm/arch/mux.h> |
| 41 | #include <asm/arch/tps65010.h> |
| 42 | |
| 43 | /*-------------------------------------------------------------------------*/ |
| 44 | |
| 45 | #define DRIVER_VERSION "2 May 2005" |
| 46 | #define DRIVER_NAME (tps65010_driver.name) |
| 47 | |
| 48 | MODULE_DESCRIPTION("TPS6501x Power Management Driver"); |
| 49 | MODULE_LICENSE("GPL"); |
| 50 | |
david-b@pacbell.net | 65fc50e | 2005-06-29 07:13:00 -0700 | [diff] [blame] | 51 | static unsigned short normal_i2c[] = { 0x48, /* 0x49, */ I2C_CLIENT_END }; |
David Brownell | 72cd799 | 2005-05-24 17:34:51 -0700 | [diff] [blame] | 52 | static unsigned short normal_i2c_range[] = { I2C_CLIENT_END }; |
| 53 | |
| 54 | I2C_CLIENT_INSMOD; |
| 55 | |
| 56 | static struct i2c_driver tps65010_driver; |
| 57 | |
| 58 | /*-------------------------------------------------------------------------*/ |
| 59 | |
| 60 | /* This driver handles a family of multipurpose chips, which incorporate |
| 61 | * voltage regulators, lithium ion/polymer battery charging, GPIOs, LEDs, |
| 62 | * and other features often needed in portable devices like cell phones |
| 63 | * or digital cameras. |
| 64 | * |
| 65 | * The tps65011 and tps65013 have different voltage settings compared |
| 66 | * to tps65010 and tps65012. The tps65013 has a NO_CHG status/irq. |
| 67 | * All except tps65010 have "wait" mode, possibly defaulted so that |
| 68 | * battery-insert != device-on. |
| 69 | * |
| 70 | * We could distinguish between some models by checking VDCDC1.UVLO or |
| 71 | * other registers, unless they've been changed already after powerup |
| 72 | * as part of board setup by a bootloader. |
| 73 | */ |
| 74 | enum tps_model { |
| 75 | TPS_UNKNOWN = 0, |
| 76 | TPS65010, |
| 77 | TPS65011, |
| 78 | TPS65012, |
| 79 | TPS65013, |
| 80 | }; |
| 81 | |
| 82 | struct tps65010 { |
| 83 | struct i2c_client client; |
Ingo Molnar | 5c085d3 | 2006-01-18 23:16:04 +0100 | [diff] [blame] | 84 | struct mutex lock; |
David Brownell | 72cd799 | 2005-05-24 17:34:51 -0700 | [diff] [blame] | 85 | int irq; |
| 86 | struct work_struct work; |
| 87 | struct dentry *file; |
| 88 | unsigned charging:1; |
| 89 | unsigned por:1; |
| 90 | unsigned model:8; |
| 91 | u16 vbus; |
| 92 | unsigned long flags; |
| 93 | #define FLAG_VBUS_CHANGED 0 |
| 94 | #define FLAG_IRQ_ENABLE 1 |
| 95 | |
| 96 | /* copies of last register state */ |
| 97 | u8 chgstatus, regstatus, chgconf; |
| 98 | u8 nmask1, nmask2; |
| 99 | |
david-b@pacbell.net | 65fc50e | 2005-06-29 07:13:00 -0700 | [diff] [blame] | 100 | /* not currently tracking GPIO state */ |
David Brownell | 72cd799 | 2005-05-24 17:34:51 -0700 | [diff] [blame] | 101 | }; |
| 102 | |
| 103 | #define POWER_POLL_DELAY msecs_to_jiffies(800) |
| 104 | |
| 105 | /*-------------------------------------------------------------------------*/ |
| 106 | |
| 107 | #if defined(DEBUG) || defined(CONFIG_DEBUG_FS) |
| 108 | |
| 109 | static void dbg_chgstat(char *buf, size_t len, u8 chgstatus) |
| 110 | { |
| 111 | snprintf(buf, len, "%02x%s%s%s%s%s%s%s%s\n", |
| 112 | chgstatus, |
| 113 | (chgstatus & TPS_CHG_USB) ? " USB" : "", |
| 114 | (chgstatus & TPS_CHG_AC) ? " AC" : "", |
| 115 | (chgstatus & TPS_CHG_THERM) ? " therm" : "", |
| 116 | (chgstatus & TPS_CHG_TERM) ? " done" : |
| 117 | ((chgstatus & (TPS_CHG_USB|TPS_CHG_AC)) |
| 118 | ? " (charging)" : ""), |
| 119 | (chgstatus & TPS_CHG_TAPER_TMO) ? " taper_tmo" : "", |
| 120 | (chgstatus & TPS_CHG_CHG_TMO) ? " charge_tmo" : "", |
| 121 | (chgstatus & TPS_CHG_PRECHG_TMO) ? " prechg_tmo" : "", |
| 122 | (chgstatus & TPS_CHG_TEMP_ERR) ? " temp_err" : ""); |
| 123 | } |
| 124 | |
| 125 | static void dbg_regstat(char *buf, size_t len, u8 regstatus) |
| 126 | { |
| 127 | snprintf(buf, len, "%02x %s%s%s%s%s%s%s%s\n", |
| 128 | regstatus, |
| 129 | (regstatus & TPS_REG_ONOFF) ? "off" : "(on)", |
| 130 | (regstatus & TPS_REG_COVER) ? " uncover" : "", |
| 131 | (regstatus & TPS_REG_UVLO) ? " UVLO" : "", |
| 132 | (regstatus & TPS_REG_NO_CHG) ? " NO_CHG" : "", |
david-b@pacbell.net | 65fc50e | 2005-06-29 07:13:00 -0700 | [diff] [blame] | 133 | (regstatus & TPS_REG_PG_LD02) ? " ld02_bad" : "", |
David Brownell | 72cd799 | 2005-05-24 17:34:51 -0700 | [diff] [blame] | 134 | (regstatus & TPS_REG_PG_LD01) ? " ld01_bad" : "", |
| 135 | (regstatus & TPS_REG_PG_MAIN) ? " main_bad" : "", |
| 136 | (regstatus & TPS_REG_PG_CORE) ? " core_bad" : ""); |
| 137 | } |
| 138 | |
| 139 | static void dbg_chgconf(int por, char *buf, size_t len, u8 chgconfig) |
| 140 | { |
david-b@pacbell.net | 65fc50e | 2005-06-29 07:13:00 -0700 | [diff] [blame] | 141 | const char *hibit; |
David Brownell | 72cd799 | 2005-05-24 17:34:51 -0700 | [diff] [blame] | 142 | |
| 143 | if (por) |
| 144 | hibit = (chgconfig & TPS_CHARGE_POR) |
| 145 | ? "POR=69ms" : "POR=1sec"; |
| 146 | else |
| 147 | hibit = (chgconfig & TPS65013_AUA) ? "AUA" : ""; |
| 148 | |
| 149 | snprintf(buf, len, "%02x %s%s%s AC=%d%% USB=%dmA %sCharge\n", |
| 150 | chgconfig, hibit, |
| 151 | (chgconfig & TPS_CHARGE_RESET) ? " reset" : "", |
| 152 | (chgconfig & TPS_CHARGE_FAST) ? " fast" : "", |
| 153 | ({int p; switch ((chgconfig >> 3) & 3) { |
| 154 | case 3: p = 100; break; |
| 155 | case 2: p = 75; break; |
| 156 | case 1: p = 50; break; |
| 157 | default: p = 25; break; |
| 158 | }; p; }), |
| 159 | (chgconfig & TPS_VBUS_CHARGING) |
| 160 | ? ((chgconfig & TPS_VBUS_500MA) ? 500 : 100) |
| 161 | : 0, |
| 162 | (chgconfig & TPS_CHARGE_ENABLE) ? "" : "No"); |
| 163 | } |
| 164 | |
| 165 | #endif |
| 166 | |
| 167 | #ifdef DEBUG |
| 168 | |
| 169 | static void show_chgstatus(const char *label, u8 chgstatus) |
| 170 | { |
| 171 | char buf [100]; |
| 172 | |
| 173 | dbg_chgstat(buf, sizeof buf, chgstatus); |
| 174 | pr_debug("%s: %s %s", DRIVER_NAME, label, buf); |
| 175 | } |
| 176 | |
| 177 | static void show_regstatus(const char *label, u8 regstatus) |
| 178 | { |
| 179 | char buf [100]; |
| 180 | |
| 181 | dbg_regstat(buf, sizeof buf, regstatus); |
| 182 | pr_debug("%s: %s %s", DRIVER_NAME, label, buf); |
| 183 | } |
| 184 | |
| 185 | static void show_chgconfig(int por, const char *label, u8 chgconfig) |
| 186 | { |
| 187 | char buf [100]; |
| 188 | |
| 189 | dbg_chgconf(por, buf, sizeof buf, chgconfig); |
| 190 | pr_debug("%s: %s %s", DRIVER_NAME, label, buf); |
| 191 | } |
| 192 | |
| 193 | #else |
| 194 | |
| 195 | static inline void show_chgstatus(const char *label, u8 chgstatus) { } |
| 196 | static inline void show_regstatus(const char *label, u8 chgstatus) { } |
| 197 | static inline void show_chgconfig(int por, const char *label, u8 chgconfig) { } |
| 198 | |
| 199 | #endif |
| 200 | |
| 201 | #ifdef CONFIG_DEBUG_FS |
| 202 | |
| 203 | static int dbg_show(struct seq_file *s, void *_) |
| 204 | { |
| 205 | struct tps65010 *tps = s->private; |
| 206 | u8 value, v2; |
| 207 | unsigned i; |
| 208 | char buf[100]; |
| 209 | const char *chip; |
| 210 | |
| 211 | switch (tps->model) { |
| 212 | case TPS65010: chip = "tps65010"; break; |
| 213 | case TPS65011: chip = "tps65011"; break; |
| 214 | case TPS65012: chip = "tps65012"; break; |
| 215 | case TPS65013: chip = "tps65013"; break; |
| 216 | default: chip = NULL; break; |
| 217 | } |
| 218 | seq_printf(s, "driver %s\nversion %s\nchip %s\n\n", |
| 219 | DRIVER_NAME, DRIVER_VERSION, chip); |
| 220 | |
Ingo Molnar | 5c085d3 | 2006-01-18 23:16:04 +0100 | [diff] [blame] | 221 | mutex_lock(&tps->lock); |
David Brownell | 72cd799 | 2005-05-24 17:34:51 -0700 | [diff] [blame] | 222 | |
| 223 | /* FIXME how can we tell whether a battery is present? |
| 224 | * likely involves a charge gauging chip (like BQ26501). |
| 225 | */ |
| 226 | |
| 227 | seq_printf(s, "%scharging\n\n", tps->charging ? "" : "(not) "); |
| 228 | |
| 229 | |
| 230 | /* registers for monitoring battery charging and status; note |
| 231 | * that reading chgstat and regstat may ack IRQs... |
| 232 | */ |
| 233 | value = i2c_smbus_read_byte_data(&tps->client, TPS_CHGCONFIG); |
| 234 | dbg_chgconf(tps->por, buf, sizeof buf, value); |
| 235 | seq_printf(s, "chgconfig %s", buf); |
| 236 | |
| 237 | value = i2c_smbus_read_byte_data(&tps->client, TPS_CHGSTATUS); |
| 238 | dbg_chgstat(buf, sizeof buf, value); |
| 239 | seq_printf(s, "chgstat %s", buf); |
| 240 | value = i2c_smbus_read_byte_data(&tps->client, TPS_MASK1); |
| 241 | dbg_chgstat(buf, sizeof buf, value); |
| 242 | seq_printf(s, "mask1 %s", buf); |
| 243 | /* ignore ackint1 */ |
| 244 | |
| 245 | value = i2c_smbus_read_byte_data(&tps->client, TPS_REGSTATUS); |
| 246 | dbg_regstat(buf, sizeof buf, value); |
| 247 | seq_printf(s, "regstat %s", buf); |
| 248 | value = i2c_smbus_read_byte_data(&tps->client, TPS_MASK2); |
| 249 | dbg_regstat(buf, sizeof buf, value); |
| 250 | seq_printf(s, "mask2 %s\n", buf); |
| 251 | /* ignore ackint2 */ |
| 252 | |
| 253 | (void) schedule_delayed_work(&tps->work, POWER_POLL_DELAY); |
| 254 | |
| 255 | |
| 256 | /* VMAIN voltage, enable lowpower, etc */ |
| 257 | value = i2c_smbus_read_byte_data(&tps->client, TPS_VDCDC1); |
| 258 | seq_printf(s, "vdcdc1 %02x\n", value); |
| 259 | |
| 260 | /* VCORE voltage, vibrator on/off */ |
| 261 | value = i2c_smbus_read_byte_data(&tps->client, TPS_VDCDC2); |
| 262 | seq_printf(s, "vdcdc2 %02x\n", value); |
| 263 | |
| 264 | /* both LD0s, and their lowpower behavior */ |
| 265 | value = i2c_smbus_read_byte_data(&tps->client, TPS_VREGS1); |
| 266 | seq_printf(s, "vregs1 %02x\n\n", value); |
| 267 | |
| 268 | |
| 269 | /* LEDs and GPIOs */ |
| 270 | value = i2c_smbus_read_byte_data(&tps->client, TPS_LED1_ON); |
| 271 | v2 = i2c_smbus_read_byte_data(&tps->client, TPS_LED1_PER); |
| 272 | seq_printf(s, "led1 %s, on=%02x, per=%02x, %d/%d msec\n", |
| 273 | (value & 0x80) |
| 274 | ? ((v2 & 0x80) ? "on" : "off") |
| 275 | : ((v2 & 0x80) ? "blink" : "(nPG)"), |
| 276 | value, v2, |
| 277 | (value & 0x7f) * 10, (v2 & 0x7f) * 100); |
| 278 | |
| 279 | value = i2c_smbus_read_byte_data(&tps->client, TPS_LED2_ON); |
| 280 | v2 = i2c_smbus_read_byte_data(&tps->client, TPS_LED2_PER); |
| 281 | seq_printf(s, "led2 %s, on=%02x, per=%02x, %d/%d msec\n", |
| 282 | (value & 0x80) |
| 283 | ? ((v2 & 0x80) ? "on" : "off") |
| 284 | : ((v2 & 0x80) ? "blink" : "off"), |
| 285 | value, v2, |
| 286 | (value & 0x7f) * 10, (v2 & 0x7f) * 100); |
| 287 | |
| 288 | value = i2c_smbus_read_byte_data(&tps->client, TPS_DEFGPIO); |
| 289 | v2 = i2c_smbus_read_byte_data(&tps->client, TPS_MASK3); |
| 290 | seq_printf(s, "defgpio %02x mask3 %02x\n", value, v2); |
| 291 | |
| 292 | for (i = 0; i < 4; i++) { |
david-b@pacbell.net | 65fc50e | 2005-06-29 07:13:00 -0700 | [diff] [blame] | 293 | if (value & (1 << (4 + i))) |
David Brownell | 72cd799 | 2005-05-24 17:34:51 -0700 | [diff] [blame] | 294 | seq_printf(s, " gpio%d-out %s\n", i + 1, |
| 295 | (value & (1 << i)) ? "low" : "hi "); |
| 296 | else |
| 297 | seq_printf(s, " gpio%d-in %s %s %s\n", i + 1, |
| 298 | (value & (1 << i)) ? "hi " : "low", |
| 299 | (v2 & (1 << i)) ? "no-irq" : "irq", |
| 300 | (v2 & (1 << (4 + i))) ? "rising" : "falling"); |
| 301 | } |
| 302 | |
Ingo Molnar | 5c085d3 | 2006-01-18 23:16:04 +0100 | [diff] [blame] | 303 | mutex_unlock(&tps->lock); |
David Brownell | 72cd799 | 2005-05-24 17:34:51 -0700 | [diff] [blame] | 304 | return 0; |
| 305 | } |
| 306 | |
| 307 | static int dbg_tps_open(struct inode *inode, struct file *file) |
| 308 | { |
| 309 | return single_open(file, dbg_show, inode->u.generic_ip); |
| 310 | } |
| 311 | |
| 312 | static struct file_operations debug_fops = { |
| 313 | .open = dbg_tps_open, |
| 314 | .read = seq_read, |
| 315 | .llseek = seq_lseek, |
| 316 | .release = single_release, |
| 317 | }; |
| 318 | |
| 319 | #define DEBUG_FOPS &debug_fops |
| 320 | |
| 321 | #else |
| 322 | #define DEBUG_FOPS NULL |
| 323 | #endif |
| 324 | |
| 325 | /*-------------------------------------------------------------------------*/ |
| 326 | |
| 327 | /* handle IRQS in a task context, so we can use I2C calls */ |
| 328 | static void tps65010_interrupt(struct tps65010 *tps) |
| 329 | { |
| 330 | u8 tmp = 0, mask, poll; |
| 331 | |
| 332 | /* IRQs won't trigger irqs for certain events, but we can get |
| 333 | * others by polling (normally, with external power applied). |
| 334 | */ |
| 335 | poll = 0; |
| 336 | |
| 337 | /* regstatus irqs */ |
| 338 | if (tps->nmask2) { |
| 339 | tmp = i2c_smbus_read_byte_data(&tps->client, TPS_REGSTATUS); |
| 340 | mask = tmp ^ tps->regstatus; |
| 341 | tps->regstatus = tmp; |
| 342 | mask &= tps->nmask2; |
| 343 | } else |
| 344 | mask = 0; |
| 345 | if (mask) { |
| 346 | tps->regstatus = tmp; |
| 347 | /* may need to shut something down ... */ |
| 348 | |
| 349 | /* "off" usually means deep sleep */ |
| 350 | if (tmp & TPS_REG_ONOFF) { |
| 351 | pr_info("%s: power off button\n", DRIVER_NAME); |
| 352 | #if 0 |
| 353 | /* REVISIT: this might need its own workqueue |
| 354 | * plus tweaks including deadlock avoidance ... |
| 355 | */ |
| 356 | software_suspend(); |
| 357 | #endif |
| 358 | poll = 1; |
| 359 | } |
| 360 | } |
| 361 | |
| 362 | /* chgstatus irqs */ |
| 363 | if (tps->nmask1) { |
| 364 | tmp = i2c_smbus_read_byte_data(&tps->client, TPS_CHGSTATUS); |
| 365 | mask = tmp ^ tps->chgstatus; |
| 366 | tps->chgstatus = tmp; |
| 367 | mask &= tps->nmask1; |
| 368 | } else |
| 369 | mask = 0; |
| 370 | if (mask) { |
| 371 | unsigned charging = 0; |
| 372 | |
| 373 | show_chgstatus("chg/irq", tmp); |
| 374 | if (tmp & (TPS_CHG_USB|TPS_CHG_AC)) |
| 375 | show_chgconfig(tps->por, "conf", tps->chgconf); |
| 376 | |
| 377 | /* Unless it was turned off or disabled, we charge any |
| 378 | * battery whenever there's power available for it |
| 379 | * and the charger hasn't been disabled. |
| 380 | */ |
| 381 | if (!(tps->chgstatus & ~(TPS_CHG_USB|TPS_CHG_AC)) |
| 382 | && (tps->chgstatus & (TPS_CHG_USB|TPS_CHG_AC)) |
| 383 | && (tps->chgconf & TPS_CHARGE_ENABLE) |
| 384 | ) { |
| 385 | if (tps->chgstatus & TPS_CHG_USB) { |
| 386 | /* VBUS options are readonly until reconnect */ |
| 387 | if (mask & TPS_CHG_USB) |
| 388 | set_bit(FLAG_VBUS_CHANGED, &tps->flags); |
| 389 | charging = 1; |
| 390 | } else if (tps->chgstatus & TPS_CHG_AC) |
| 391 | charging = 1; |
| 392 | } |
| 393 | if (charging != tps->charging) { |
| 394 | tps->charging = charging; |
| 395 | pr_info("%s: battery %scharging\n", |
| 396 | DRIVER_NAME, charging ? "" : |
| 397 | ((tps->chgstatus & (TPS_CHG_USB|TPS_CHG_AC)) |
| 398 | ? "NOT " : "dis")); |
| 399 | } |
| 400 | } |
| 401 | |
| 402 | /* always poll to detect (a) power removal, without tps65013 |
| 403 | * NO_CHG IRQ; or (b) restart of charging after stop. |
| 404 | */ |
| 405 | if ((tps->model != TPS65013 || !tps->charging) |
| 406 | && (tps->chgstatus & (TPS_CHG_USB|TPS_CHG_AC))) |
| 407 | poll = 1; |
| 408 | if (poll) |
| 409 | (void) schedule_delayed_work(&tps->work, POWER_POLL_DELAY); |
| 410 | |
| 411 | /* also potentially gpio-in rise or fall */ |
| 412 | } |
| 413 | |
| 414 | /* handle IRQs and polling using keventd for now */ |
| 415 | static void tps65010_work(void *_tps) |
| 416 | { |
| 417 | struct tps65010 *tps = _tps; |
| 418 | |
Ingo Molnar | 5c085d3 | 2006-01-18 23:16:04 +0100 | [diff] [blame] | 419 | mutex_lock(&tps->lock); |
David Brownell | 72cd799 | 2005-05-24 17:34:51 -0700 | [diff] [blame] | 420 | |
| 421 | tps65010_interrupt(tps); |
| 422 | |
| 423 | if (test_and_clear_bit(FLAG_VBUS_CHANGED, &tps->flags)) { |
| 424 | int status; |
| 425 | u8 chgconfig, tmp; |
| 426 | |
| 427 | chgconfig = i2c_smbus_read_byte_data(&tps->client, |
| 428 | TPS_CHGCONFIG); |
| 429 | chgconfig &= ~(TPS_VBUS_500MA | TPS_VBUS_CHARGING); |
| 430 | if (tps->vbus == 500) |
| 431 | chgconfig |= TPS_VBUS_500MA | TPS_VBUS_CHARGING; |
| 432 | else if (tps->vbus >= 100) |
| 433 | chgconfig |= TPS_VBUS_CHARGING; |
| 434 | |
| 435 | status = i2c_smbus_write_byte_data(&tps->client, |
| 436 | TPS_CHGCONFIG, chgconfig); |
| 437 | |
| 438 | /* vbus update fails unless VBUS is connected! */ |
| 439 | tmp = i2c_smbus_read_byte_data(&tps->client, TPS_CHGCONFIG); |
| 440 | tps->chgconf = tmp; |
| 441 | show_chgconfig(tps->por, "update vbus", tmp); |
| 442 | } |
| 443 | |
| 444 | if (test_and_clear_bit(FLAG_IRQ_ENABLE, &tps->flags)) |
| 445 | enable_irq(tps->irq); |
| 446 | |
Ingo Molnar | 5c085d3 | 2006-01-18 23:16:04 +0100 | [diff] [blame] | 447 | mutex_unlock(&tps->lock); |
David Brownell | 72cd799 | 2005-05-24 17:34:51 -0700 | [diff] [blame] | 448 | } |
| 449 | |
| 450 | static irqreturn_t tps65010_irq(int irq, void *_tps, struct pt_regs *regs) |
| 451 | { |
| 452 | struct tps65010 *tps = _tps; |
| 453 | |
| 454 | disable_irq_nosync(irq); |
| 455 | set_bit(FLAG_IRQ_ENABLE, &tps->flags); |
| 456 | (void) schedule_work(&tps->work); |
| 457 | return IRQ_HANDLED; |
| 458 | } |
| 459 | |
| 460 | /*-------------------------------------------------------------------------*/ |
| 461 | |
| 462 | static struct tps65010 *the_tps; |
| 463 | |
| 464 | static int __exit tps65010_detach_client(struct i2c_client *client) |
| 465 | { |
| 466 | struct tps65010 *tps; |
| 467 | |
| 468 | tps = container_of(client, struct tps65010, client); |
| 469 | #ifdef CONFIG_ARM |
| 470 | if (machine_is_omap_h2()) |
| 471 | omap_free_gpio(58); |
| 472 | if (machine_is_omap_osk()) |
| 473 | omap_free_gpio(OMAP_MPUIO(1)); |
| 474 | #endif |
| 475 | free_irq(tps->irq, tps); |
| 476 | debugfs_remove(tps->file); |
| 477 | if (i2c_detach_client(client) == 0) |
| 478 | kfree(tps); |
david-b@pacbell.net | 65fc50e | 2005-06-29 07:13:00 -0700 | [diff] [blame] | 479 | the_tps = NULL; |
David Brownell | 72cd799 | 2005-05-24 17:34:51 -0700 | [diff] [blame] | 480 | return 0; |
| 481 | } |
| 482 | |
| 483 | static int tps65010_noscan(struct i2c_adapter *bus) |
| 484 | { |
| 485 | /* pure paranoia, in case someone adds another i2c bus |
| 486 | * after our init section's gone... |
| 487 | */ |
| 488 | return -ENODEV; |
| 489 | } |
| 490 | |
| 491 | /* no error returns, they'd just make bus scanning stop */ |
| 492 | static int __init |
| 493 | tps65010_probe(struct i2c_adapter *bus, int address, int kind) |
| 494 | { |
| 495 | struct tps65010 *tps; |
| 496 | int status; |
Russell King | 9ded96f | 2006-01-08 01:02:07 -0800 | [diff] [blame] | 497 | unsigned long irqflags; |
David Brownell | 72cd799 | 2005-05-24 17:34:51 -0700 | [diff] [blame] | 498 | |
| 499 | if (the_tps) { |
| 500 | dev_dbg(&bus->dev, "only one %s for now\n", DRIVER_NAME); |
| 501 | return 0; |
| 502 | } |
| 503 | |
Deepak Saxena | 5263ebb | 2005-10-17 23:09:43 +0200 | [diff] [blame] | 504 | tps = kzalloc(sizeof *tps, GFP_KERNEL); |
David Brownell | 72cd799 | 2005-05-24 17:34:51 -0700 | [diff] [blame] | 505 | if (!tps) |
| 506 | return 0; |
| 507 | |
Ingo Molnar | 5c085d3 | 2006-01-18 23:16:04 +0100 | [diff] [blame] | 508 | mutex_init(&tps->lock); |
David Brownell | 72cd799 | 2005-05-24 17:34:51 -0700 | [diff] [blame] | 509 | INIT_WORK(&tps->work, tps65010_work, tps); |
| 510 | tps->irq = -1; |
| 511 | tps->client.addr = address; |
David Brownell | 72cd799 | 2005-05-24 17:34:51 -0700 | [diff] [blame] | 512 | tps->client.adapter = bus; |
| 513 | tps->client.driver = &tps65010_driver; |
| 514 | strlcpy(tps->client.name, DRIVER_NAME, I2C_NAME_SIZE); |
| 515 | |
| 516 | status = i2c_attach_client(&tps->client); |
| 517 | if (status < 0) { |
| 518 | dev_dbg(&bus->dev, "can't attach %s to device %d, err %d\n", |
| 519 | DRIVER_NAME, address, status); |
david-b@pacbell.net | 65fc50e | 2005-06-29 07:13:00 -0700 | [diff] [blame] | 520 | goto fail1; |
David Brownell | 72cd799 | 2005-05-24 17:34:51 -0700 | [diff] [blame] | 521 | } |
| 522 | |
| 523 | #ifdef CONFIG_ARM |
Thomas Gleixner | dace145 | 2006-07-01 19:29:38 -0700 | [diff] [blame^] | 524 | irqflags = IRQF_SAMPLE_RANDOM | IRQF_TRIGGER_LOW; |
David Brownell | 72cd799 | 2005-05-24 17:34:51 -0700 | [diff] [blame] | 525 | if (machine_is_omap_h2()) { |
| 526 | tps->model = TPS65010; |
| 527 | omap_cfg_reg(W4_GPIO58); |
| 528 | tps->irq = OMAP_GPIO_IRQ(58); |
| 529 | omap_request_gpio(58); |
| 530 | omap_set_gpio_direction(58, 1); |
Thomas Gleixner | dace145 | 2006-07-01 19:29:38 -0700 | [diff] [blame^] | 531 | irqflags |= IRQF_TRIGGER_FALLING; |
David Brownell | 72cd799 | 2005-05-24 17:34:51 -0700 | [diff] [blame] | 532 | } |
| 533 | if (machine_is_omap_osk()) { |
| 534 | tps->model = TPS65010; |
| 535 | // omap_cfg_reg(U19_1610_MPUIO1); |
| 536 | tps->irq = OMAP_GPIO_IRQ(OMAP_MPUIO(1)); |
| 537 | omap_request_gpio(OMAP_MPUIO(1)); |
| 538 | omap_set_gpio_direction(OMAP_MPUIO(1), 1); |
Thomas Gleixner | dace145 | 2006-07-01 19:29:38 -0700 | [diff] [blame^] | 539 | irqflags |= IRQF_TRIGGER_FALLING; |
David Brownell | 72cd799 | 2005-05-24 17:34:51 -0700 | [diff] [blame] | 540 | } |
| 541 | if (machine_is_omap_h3()) { |
| 542 | tps->model = TPS65013; |
| 543 | |
| 544 | // FIXME set up this board's IRQ ... |
| 545 | } |
| 546 | #else |
Thomas Gleixner | dace145 | 2006-07-01 19:29:38 -0700 | [diff] [blame^] | 547 | irqflags = IRQF_SAMPLE_RANDOM; |
David Brownell | 72cd799 | 2005-05-24 17:34:51 -0700 | [diff] [blame] | 548 | #endif |
| 549 | |
| 550 | if (tps->irq > 0) { |
David Brownell | 72cd799 | 2005-05-24 17:34:51 -0700 | [diff] [blame] | 551 | status = request_irq(tps->irq, tps65010_irq, |
Russell King | 9ded96f | 2006-01-08 01:02:07 -0800 | [diff] [blame] | 552 | irqflags, DRIVER_NAME, tps); |
David Brownell | 72cd799 | 2005-05-24 17:34:51 -0700 | [diff] [blame] | 553 | if (status < 0) { |
| 554 | dev_dbg(&tps->client.dev, "can't get IRQ %d, err %d\n", |
| 555 | tps->irq, status); |
| 556 | i2c_detach_client(&tps->client); |
| 557 | goto fail1; |
| 558 | } |
| 559 | #ifdef CONFIG_ARM |
| 560 | /* annoying race here, ideally we'd have an option |
| 561 | * to claim the irq now and enable it later. |
| 562 | */ |
| 563 | disable_irq(tps->irq); |
| 564 | set_bit(FLAG_IRQ_ENABLE, &tps->flags); |
| 565 | #endif |
| 566 | } else |
| 567 | printk(KERN_WARNING "%s: IRQ not configured!\n", |
| 568 | DRIVER_NAME); |
| 569 | |
| 570 | |
| 571 | switch (tps->model) { |
| 572 | case TPS65010: |
| 573 | case TPS65012: |
| 574 | tps->por = 1; |
| 575 | break; |
| 576 | case TPS_UNKNOWN: |
| 577 | printk(KERN_WARNING "%s: unknown TPS chip\n", DRIVER_NAME); |
| 578 | break; |
| 579 | /* else CHGCONFIG.POR is replaced by AUA, enabling a WAIT mode */ |
| 580 | } |
| 581 | tps->chgconf = i2c_smbus_read_byte_data(&tps->client, TPS_CHGCONFIG); |
| 582 | show_chgconfig(tps->por, "conf/init", tps->chgconf); |
| 583 | |
| 584 | show_chgstatus("chg/init", |
| 585 | i2c_smbus_read_byte_data(&tps->client, TPS_CHGSTATUS)); |
| 586 | show_regstatus("reg/init", |
| 587 | i2c_smbus_read_byte_data(&tps->client, TPS_REGSTATUS)); |
| 588 | |
| 589 | pr_debug("%s: vdcdc1 0x%02x, vdcdc2 %02x, vregs1 %02x\n", DRIVER_NAME, |
| 590 | i2c_smbus_read_byte_data(&tps->client, TPS_VDCDC1), |
| 591 | i2c_smbus_read_byte_data(&tps->client, TPS_VDCDC2), |
| 592 | i2c_smbus_read_byte_data(&tps->client, TPS_VREGS1)); |
| 593 | pr_debug("%s: defgpio 0x%02x, mask3 0x%02x\n", DRIVER_NAME, |
| 594 | i2c_smbus_read_byte_data(&tps->client, TPS_DEFGPIO), |
| 595 | i2c_smbus_read_byte_data(&tps->client, TPS_MASK3)); |
| 596 | |
| 597 | tps65010_driver.attach_adapter = tps65010_noscan; |
| 598 | the_tps = tps; |
| 599 | |
| 600 | #if defined(CONFIG_USB_GADGET) && !defined(CONFIG_USB_OTG) |
| 601 | /* USB hosts can't draw VBUS. OTG devices could, later |
| 602 | * when OTG infrastructure enables it. USB peripherals |
| 603 | * could be relying on VBUS while booting, though. |
| 604 | */ |
| 605 | tps->vbus = 100; |
| 606 | #endif |
| 607 | |
| 608 | /* unmask the "interesting" irqs, then poll once to |
| 609 | * kickstart monitoring, initialize shadowed status |
| 610 | * registers, and maybe disable VBUS draw. |
| 611 | */ |
| 612 | tps->nmask1 = ~0; |
| 613 | (void) i2c_smbus_write_byte_data(&tps->client, TPS_MASK1, ~tps->nmask1); |
| 614 | |
| 615 | tps->nmask2 = TPS_REG_ONOFF; |
| 616 | if (tps->model == TPS65013) |
| 617 | tps->nmask2 |= TPS_REG_NO_CHG; |
| 618 | (void) i2c_smbus_write_byte_data(&tps->client, TPS_MASK2, ~tps->nmask2); |
| 619 | |
| 620 | (void) i2c_smbus_write_byte_data(&tps->client, TPS_MASK3, 0x0f |
| 621 | | i2c_smbus_read_byte_data(&tps->client, TPS_MASK3)); |
| 622 | |
| 623 | tps65010_work(tps); |
| 624 | |
| 625 | tps->file = debugfs_create_file(DRIVER_NAME, S_IRUGO, NULL, |
| 626 | tps, DEBUG_FOPS); |
| 627 | return 0; |
david-b@pacbell.net | 65fc50e | 2005-06-29 07:13:00 -0700 | [diff] [blame] | 628 | fail1: |
| 629 | kfree(tps); |
| 630 | return 0; |
David Brownell | 72cd799 | 2005-05-24 17:34:51 -0700 | [diff] [blame] | 631 | } |
| 632 | |
| 633 | static int __init tps65010_scan_bus(struct i2c_adapter *bus) |
| 634 | { |
| 635 | if (!i2c_check_functionality(bus, I2C_FUNC_SMBUS_BYTE_DATA)) |
| 636 | return -EINVAL; |
| 637 | return i2c_probe(bus, &addr_data, tps65010_probe); |
| 638 | } |
| 639 | |
| 640 | static struct i2c_driver tps65010_driver = { |
Laurent Riffard | a9718b0 | 2005-11-26 20:36:00 +0100 | [diff] [blame] | 641 | .driver = { |
Laurent Riffard | a9718b0 | 2005-11-26 20:36:00 +0100 | [diff] [blame] | 642 | .name = "tps65010", |
| 643 | }, |
David Brownell | 72cd799 | 2005-05-24 17:34:51 -0700 | [diff] [blame] | 644 | .attach_adapter = tps65010_scan_bus, |
| 645 | .detach_client = __exit_p(tps65010_detach_client), |
| 646 | }; |
| 647 | |
| 648 | /*-------------------------------------------------------------------------*/ |
| 649 | |
| 650 | /* Draw from VBUS: |
| 651 | * 0 mA -- DON'T DRAW (might supply power instead) |
| 652 | * 100 mA -- usb unit load (slowest charge rate) |
| 653 | * 500 mA -- usb high power (fast battery charge) |
| 654 | */ |
| 655 | int tps65010_set_vbus_draw(unsigned mA) |
| 656 | { |
| 657 | unsigned long flags; |
| 658 | |
| 659 | if (!the_tps) |
| 660 | return -ENODEV; |
| 661 | |
| 662 | /* assumes non-SMP */ |
| 663 | local_irq_save(flags); |
| 664 | if (mA >= 500) |
| 665 | mA = 500; |
| 666 | else if (mA >= 100) |
| 667 | mA = 100; |
| 668 | else |
| 669 | mA = 0; |
| 670 | the_tps->vbus = mA; |
| 671 | if ((the_tps->chgstatus & TPS_CHG_USB) |
| 672 | && test_and_set_bit( |
| 673 | FLAG_VBUS_CHANGED, &the_tps->flags)) { |
| 674 | /* gadget drivers call this in_irq() */ |
| 675 | (void) schedule_work(&the_tps->work); |
| 676 | } |
| 677 | local_irq_restore(flags); |
| 678 | |
| 679 | return 0; |
| 680 | } |
| 681 | EXPORT_SYMBOL(tps65010_set_vbus_draw); |
| 682 | |
| 683 | /*-------------------------------------------------------------------------*/ |
| 684 | /* tps65010_set_gpio_out_value parameter: |
| 685 | * gpio: GPIO1, GPIO2, GPIO3 or GPIO4 |
| 686 | * value: LOW or HIGH |
| 687 | */ |
| 688 | int tps65010_set_gpio_out_value(unsigned gpio, unsigned value) |
| 689 | { |
| 690 | int status; |
| 691 | unsigned defgpio; |
| 692 | |
| 693 | if (!the_tps) |
| 694 | return -ENODEV; |
| 695 | if ((gpio < GPIO1) || (gpio > GPIO4)) |
| 696 | return -EINVAL; |
| 697 | |
Ingo Molnar | 5c085d3 | 2006-01-18 23:16:04 +0100 | [diff] [blame] | 698 | mutex_lock(&the_tps->lock); |
David Brownell | 72cd799 | 2005-05-24 17:34:51 -0700 | [diff] [blame] | 699 | |
| 700 | defgpio = i2c_smbus_read_byte_data(&the_tps->client, TPS_DEFGPIO); |
| 701 | |
| 702 | /* Configure GPIO for output */ |
| 703 | defgpio |= 1 << (gpio + 3); |
| 704 | |
| 705 | /* Writing 1 forces a logic 0 on that GPIO and vice versa */ |
| 706 | switch (value) { |
| 707 | case LOW: |
| 708 | defgpio |= 1 << (gpio - 1); /* set GPIO low by writing 1 */ |
| 709 | break; |
| 710 | /* case HIGH: */ |
| 711 | default: |
| 712 | defgpio &= ~(1 << (gpio - 1)); /* set GPIO high by writing 0 */ |
| 713 | break; |
| 714 | } |
| 715 | |
| 716 | status = i2c_smbus_write_byte_data(&the_tps->client, |
| 717 | TPS_DEFGPIO, defgpio); |
| 718 | |
| 719 | pr_debug("%s: gpio%dout = %s, defgpio 0x%02x\n", DRIVER_NAME, |
| 720 | gpio, value ? "high" : "low", |
| 721 | i2c_smbus_read_byte_data(&the_tps->client, TPS_DEFGPIO)); |
| 722 | |
Ingo Molnar | 5c085d3 | 2006-01-18 23:16:04 +0100 | [diff] [blame] | 723 | mutex_unlock(&the_tps->lock); |
David Brownell | 72cd799 | 2005-05-24 17:34:51 -0700 | [diff] [blame] | 724 | return status; |
| 725 | } |
| 726 | EXPORT_SYMBOL(tps65010_set_gpio_out_value); |
| 727 | |
| 728 | /*-------------------------------------------------------------------------*/ |
| 729 | /* tps65010_set_led parameter: |
| 730 | * led: LED1 or LED2 |
| 731 | * mode: ON, OFF or BLINK |
| 732 | */ |
| 733 | int tps65010_set_led(unsigned led, unsigned mode) |
| 734 | { |
| 735 | int status; |
| 736 | unsigned led_on, led_per, offs; |
| 737 | |
| 738 | if (!the_tps) |
| 739 | return -ENODEV; |
| 740 | |
david-b@pacbell.net | 65fc50e | 2005-06-29 07:13:00 -0700 | [diff] [blame] | 741 | if (led == LED1) |
David Brownell | 72cd799 | 2005-05-24 17:34:51 -0700 | [diff] [blame] | 742 | offs = 0; |
| 743 | else { |
| 744 | offs = 2; |
| 745 | led = LED2; |
| 746 | } |
| 747 | |
Ingo Molnar | 5c085d3 | 2006-01-18 23:16:04 +0100 | [diff] [blame] | 748 | mutex_lock(&the_tps->lock); |
David Brownell | 72cd799 | 2005-05-24 17:34:51 -0700 | [diff] [blame] | 749 | |
david-b@pacbell.net | 65fc50e | 2005-06-29 07:13:00 -0700 | [diff] [blame] | 750 | pr_debug("%s: led%i_on 0x%02x\n", DRIVER_NAME, led, |
| 751 | i2c_smbus_read_byte_data(&the_tps->client, |
| 752 | TPS_LED1_ON + offs)); |
David Brownell | 72cd799 | 2005-05-24 17:34:51 -0700 | [diff] [blame] | 753 | |
david-b@pacbell.net | 65fc50e | 2005-06-29 07:13:00 -0700 | [diff] [blame] | 754 | pr_debug("%s: led%i_per 0x%02x\n", DRIVER_NAME, led, |
| 755 | i2c_smbus_read_byte_data(&the_tps->client, |
| 756 | TPS_LED1_PER + offs)); |
David Brownell | 72cd799 | 2005-05-24 17:34:51 -0700 | [diff] [blame] | 757 | |
| 758 | switch (mode) { |
| 759 | case OFF: |
| 760 | led_on = 1 << 7; |
| 761 | led_per = 0 << 7; |
| 762 | break; |
| 763 | case ON: |
| 764 | led_on = 1 << 7; |
| 765 | led_per = 1 << 7; |
| 766 | break; |
| 767 | case BLINK: |
| 768 | led_on = 0x30 | (0 << 7); |
| 769 | led_per = 0x08 | (1 << 7); |
| 770 | break; |
| 771 | default: |
david-b@pacbell.net | 65fc50e | 2005-06-29 07:13:00 -0700 | [diff] [blame] | 772 | printk(KERN_ERR "%s: Wrong mode parameter for set_led()\n", |
David Brownell | 72cd799 | 2005-05-24 17:34:51 -0700 | [diff] [blame] | 773 | DRIVER_NAME); |
Ingo Molnar | 5c085d3 | 2006-01-18 23:16:04 +0100 | [diff] [blame] | 774 | mutex_unlock(&the_tps->lock); |
David Brownell | 72cd799 | 2005-05-24 17:34:51 -0700 | [diff] [blame] | 775 | return -EINVAL; |
| 776 | } |
| 777 | |
| 778 | status = i2c_smbus_write_byte_data(&the_tps->client, |
| 779 | TPS_LED1_ON + offs, led_on); |
| 780 | |
| 781 | if (status != 0) { |
| 782 | printk(KERN_ERR "%s: Failed to write led%i_on register\n", |
| 783 | DRIVER_NAME, led); |
Ingo Molnar | 5c085d3 | 2006-01-18 23:16:04 +0100 | [diff] [blame] | 784 | mutex_unlock(&the_tps->lock); |
David Brownell | 72cd799 | 2005-05-24 17:34:51 -0700 | [diff] [blame] | 785 | return status; |
| 786 | } |
| 787 | |
david-b@pacbell.net | 65fc50e | 2005-06-29 07:13:00 -0700 | [diff] [blame] | 788 | pr_debug("%s: led%i_on 0x%02x\n", DRIVER_NAME, led, |
David Brownell | 72cd799 | 2005-05-24 17:34:51 -0700 | [diff] [blame] | 789 | i2c_smbus_read_byte_data(&the_tps->client, TPS_LED1_ON + offs)); |
| 790 | |
| 791 | status = i2c_smbus_write_byte_data(&the_tps->client, |
| 792 | TPS_LED1_PER + offs, led_per); |
| 793 | |
| 794 | if (status != 0) { |
| 795 | printk(KERN_ERR "%s: Failed to write led%i_per register\n", |
| 796 | DRIVER_NAME, led); |
Ingo Molnar | 5c085d3 | 2006-01-18 23:16:04 +0100 | [diff] [blame] | 797 | mutex_unlock(&the_tps->lock); |
David Brownell | 72cd799 | 2005-05-24 17:34:51 -0700 | [diff] [blame] | 798 | return status; |
| 799 | } |
| 800 | |
david-b@pacbell.net | 65fc50e | 2005-06-29 07:13:00 -0700 | [diff] [blame] | 801 | pr_debug("%s: led%i_per 0x%02x\n", DRIVER_NAME, led, |
| 802 | i2c_smbus_read_byte_data(&the_tps->client, |
| 803 | TPS_LED1_PER + offs)); |
David Brownell | 72cd799 | 2005-05-24 17:34:51 -0700 | [diff] [blame] | 804 | |
Ingo Molnar | 5c085d3 | 2006-01-18 23:16:04 +0100 | [diff] [blame] | 805 | mutex_unlock(&the_tps->lock); |
David Brownell | 72cd799 | 2005-05-24 17:34:51 -0700 | [diff] [blame] | 806 | |
| 807 | return status; |
| 808 | } |
| 809 | EXPORT_SYMBOL(tps65010_set_led); |
| 810 | |
| 811 | /*-------------------------------------------------------------------------*/ |
| 812 | /* tps65010_set_vib parameter: |
| 813 | * value: ON or OFF |
| 814 | */ |
| 815 | int tps65010_set_vib(unsigned value) |
| 816 | { |
| 817 | int status; |
| 818 | unsigned vdcdc2; |
| 819 | |
| 820 | if (!the_tps) |
| 821 | return -ENODEV; |
| 822 | |
Ingo Molnar | 5c085d3 | 2006-01-18 23:16:04 +0100 | [diff] [blame] | 823 | mutex_lock(&the_tps->lock); |
David Brownell | 72cd799 | 2005-05-24 17:34:51 -0700 | [diff] [blame] | 824 | |
| 825 | vdcdc2 = i2c_smbus_read_byte_data(&the_tps->client, TPS_VDCDC2); |
| 826 | vdcdc2 &= ~(1 << 1); |
| 827 | if (value) |
| 828 | vdcdc2 |= (1 << 1); |
| 829 | status = i2c_smbus_write_byte_data(&the_tps->client, |
| 830 | TPS_VDCDC2, vdcdc2); |
| 831 | |
| 832 | pr_debug("%s: vibrator %s\n", DRIVER_NAME, value ? "on" : "off"); |
| 833 | |
Ingo Molnar | 5c085d3 | 2006-01-18 23:16:04 +0100 | [diff] [blame] | 834 | mutex_unlock(&the_tps->lock); |
David Brownell | 72cd799 | 2005-05-24 17:34:51 -0700 | [diff] [blame] | 835 | return status; |
| 836 | } |
| 837 | EXPORT_SYMBOL(tps65010_set_vib); |
| 838 | |
| 839 | /*-------------------------------------------------------------------------*/ |
| 840 | /* tps65010_set_low_pwr parameter: |
| 841 | * mode: ON or OFF |
| 842 | */ |
| 843 | int tps65010_set_low_pwr(unsigned mode) |
| 844 | { |
| 845 | int status; |
| 846 | unsigned vdcdc1; |
| 847 | |
| 848 | if (!the_tps) |
| 849 | return -ENODEV; |
| 850 | |
Ingo Molnar | 5c085d3 | 2006-01-18 23:16:04 +0100 | [diff] [blame] | 851 | mutex_lock(&the_tps->lock); |
David Brownell | 72cd799 | 2005-05-24 17:34:51 -0700 | [diff] [blame] | 852 | |
| 853 | pr_debug("%s: %s low_pwr, vdcdc1 0x%02x\n", DRIVER_NAME, |
| 854 | mode ? "enable" : "disable", |
| 855 | i2c_smbus_read_byte_data(&the_tps->client, TPS_VDCDC1)); |
| 856 | |
| 857 | vdcdc1 = i2c_smbus_read_byte_data(&the_tps->client, TPS_VDCDC1); |
| 858 | |
| 859 | switch (mode) { |
| 860 | case OFF: |
| 861 | vdcdc1 &= ~TPS_ENABLE_LP; /* disable ENABLE_LP bit */ |
| 862 | break; |
| 863 | /* case ON: */ |
| 864 | default: |
| 865 | vdcdc1 |= TPS_ENABLE_LP; /* enable ENABLE_LP bit */ |
| 866 | break; |
| 867 | } |
| 868 | |
| 869 | status = i2c_smbus_write_byte_data(&the_tps->client, |
| 870 | TPS_VDCDC1, vdcdc1); |
| 871 | |
| 872 | if (status != 0) |
| 873 | printk(KERN_ERR "%s: Failed to write vdcdc1 register\n", |
david-b@pacbell.net | 65fc50e | 2005-06-29 07:13:00 -0700 | [diff] [blame] | 874 | DRIVER_NAME); |
David Brownell | 72cd799 | 2005-05-24 17:34:51 -0700 | [diff] [blame] | 875 | else |
| 876 | pr_debug("%s: vdcdc1 0x%02x\n", DRIVER_NAME, |
| 877 | i2c_smbus_read_byte_data(&the_tps->client, TPS_VDCDC1)); |
| 878 | |
Ingo Molnar | 5c085d3 | 2006-01-18 23:16:04 +0100 | [diff] [blame] | 879 | mutex_unlock(&the_tps->lock); |
David Brownell | 72cd799 | 2005-05-24 17:34:51 -0700 | [diff] [blame] | 880 | |
| 881 | return status; |
| 882 | } |
| 883 | EXPORT_SYMBOL(tps65010_set_low_pwr); |
| 884 | |
| 885 | /*-------------------------------------------------------------------------*/ |
| 886 | /* tps65010_config_vregs1 parameter: |
| 887 | * value to be written to VREGS1 register |
| 888 | * Note: The complete register is written, set all bits you need |
| 889 | */ |
| 890 | int tps65010_config_vregs1(unsigned value) |
| 891 | { |
| 892 | int status; |
| 893 | |
| 894 | if (!the_tps) |
| 895 | return -ENODEV; |
| 896 | |
Ingo Molnar | 5c085d3 | 2006-01-18 23:16:04 +0100 | [diff] [blame] | 897 | mutex_lock(&the_tps->lock); |
David Brownell | 72cd799 | 2005-05-24 17:34:51 -0700 | [diff] [blame] | 898 | |
| 899 | pr_debug("%s: vregs1 0x%02x\n", DRIVER_NAME, |
david-b@pacbell.net | 65fc50e | 2005-06-29 07:13:00 -0700 | [diff] [blame] | 900 | i2c_smbus_read_byte_data(&the_tps->client, TPS_VREGS1)); |
David Brownell | 72cd799 | 2005-05-24 17:34:51 -0700 | [diff] [blame] | 901 | |
| 902 | status = i2c_smbus_write_byte_data(&the_tps->client, |
| 903 | TPS_VREGS1, value); |
| 904 | |
| 905 | if (status != 0) |
| 906 | printk(KERN_ERR "%s: Failed to write vregs1 register\n", |
david-b@pacbell.net | 65fc50e | 2005-06-29 07:13:00 -0700 | [diff] [blame] | 907 | DRIVER_NAME); |
David Brownell | 72cd799 | 2005-05-24 17:34:51 -0700 | [diff] [blame] | 908 | else |
| 909 | pr_debug("%s: vregs1 0x%02x\n", DRIVER_NAME, |
| 910 | i2c_smbus_read_byte_data(&the_tps->client, TPS_VREGS1)); |
| 911 | |
Ingo Molnar | 5c085d3 | 2006-01-18 23:16:04 +0100 | [diff] [blame] | 912 | mutex_unlock(&the_tps->lock); |
David Brownell | 72cd799 | 2005-05-24 17:34:51 -0700 | [diff] [blame] | 913 | |
| 914 | return status; |
| 915 | } |
| 916 | EXPORT_SYMBOL(tps65010_config_vregs1); |
| 917 | |
| 918 | /*-------------------------------------------------------------------------*/ |
| 919 | /* tps65013_set_low_pwr parameter: |
| 920 | * mode: ON or OFF |
| 921 | */ |
| 922 | |
| 923 | /* FIXME: Assumes AC or USB power is present. Setting AUA bit is not |
| 924 | required if power supply is through a battery */ |
| 925 | |
| 926 | int tps65013_set_low_pwr(unsigned mode) |
| 927 | { |
| 928 | int status; |
| 929 | unsigned vdcdc1, chgconfig; |
| 930 | |
| 931 | if (!the_tps || the_tps->por) |
| 932 | return -ENODEV; |
| 933 | |
Ingo Molnar | 5c085d3 | 2006-01-18 23:16:04 +0100 | [diff] [blame] | 934 | mutex_lock(&the_tps->lock); |
David Brownell | 72cd799 | 2005-05-24 17:34:51 -0700 | [diff] [blame] | 935 | |
| 936 | pr_debug("%s: %s low_pwr, chgconfig 0x%02x vdcdc1 0x%02x\n", |
| 937 | DRIVER_NAME, |
| 938 | mode ? "enable" : "disable", |
| 939 | i2c_smbus_read_byte_data(&the_tps->client, TPS_CHGCONFIG), |
| 940 | i2c_smbus_read_byte_data(&the_tps->client, TPS_VDCDC1)); |
| 941 | |
| 942 | chgconfig = i2c_smbus_read_byte_data(&the_tps->client, TPS_CHGCONFIG); |
| 943 | vdcdc1 = i2c_smbus_read_byte_data(&the_tps->client, TPS_VDCDC1); |
| 944 | |
| 945 | switch (mode) { |
| 946 | case OFF: |
| 947 | chgconfig &= ~TPS65013_AUA; /* disable AUA bit */ |
| 948 | vdcdc1 &= ~TPS_ENABLE_LP; /* disable ENABLE_LP bit */ |
| 949 | break; |
| 950 | /* case ON: */ |
| 951 | default: |
| 952 | chgconfig |= TPS65013_AUA; /* enable AUA bit */ |
| 953 | vdcdc1 |= TPS_ENABLE_LP; /* enable ENABLE_LP bit */ |
| 954 | break; |
| 955 | } |
| 956 | |
| 957 | status = i2c_smbus_write_byte_data(&the_tps->client, |
| 958 | TPS_CHGCONFIG, chgconfig); |
| 959 | if (status != 0) { |
| 960 | printk(KERN_ERR "%s: Failed to write chconfig register\n", |
| 961 | DRIVER_NAME); |
Ingo Molnar | 5c085d3 | 2006-01-18 23:16:04 +0100 | [diff] [blame] | 962 | mutex_unlock(&the_tps->lock); |
David Brownell | 72cd799 | 2005-05-24 17:34:51 -0700 | [diff] [blame] | 963 | return status; |
| 964 | } |
| 965 | |
| 966 | chgconfig = i2c_smbus_read_byte_data(&the_tps->client, TPS_CHGCONFIG); |
| 967 | the_tps->chgconf = chgconfig; |
| 968 | show_chgconfig(0, "chgconf", chgconfig); |
| 969 | |
| 970 | status = i2c_smbus_write_byte_data(&the_tps->client, |
| 971 | TPS_VDCDC1, vdcdc1); |
| 972 | |
| 973 | if (status != 0) |
| 974 | printk(KERN_ERR "%s: Failed to write vdcdc1 register\n", |
| 975 | DRIVER_NAME); |
| 976 | else |
| 977 | pr_debug("%s: vdcdc1 0x%02x\n", DRIVER_NAME, |
| 978 | i2c_smbus_read_byte_data(&the_tps->client, TPS_VDCDC1)); |
| 979 | |
Ingo Molnar | 5c085d3 | 2006-01-18 23:16:04 +0100 | [diff] [blame] | 980 | mutex_unlock(&the_tps->lock); |
David Brownell | 72cd799 | 2005-05-24 17:34:51 -0700 | [diff] [blame] | 981 | |
| 982 | return status; |
| 983 | } |
| 984 | EXPORT_SYMBOL(tps65013_set_low_pwr); |
| 985 | |
| 986 | /*-------------------------------------------------------------------------*/ |
| 987 | |
| 988 | static int __init tps_init(void) |
| 989 | { |
| 990 | u32 tries = 3; |
| 991 | int status = -ENODEV; |
| 992 | |
| 993 | printk(KERN_INFO "%s: version %s\n", DRIVER_NAME, DRIVER_VERSION); |
| 994 | |
| 995 | /* some boards have startup glitches */ |
| 996 | while (tries--) { |
| 997 | status = i2c_add_driver(&tps65010_driver); |
| 998 | if (the_tps) |
| 999 | break; |
| 1000 | i2c_del_driver(&tps65010_driver); |
| 1001 | if (!tries) { |
| 1002 | printk(KERN_ERR "%s: no chip?\n", DRIVER_NAME); |
| 1003 | return -ENODEV; |
| 1004 | } |
| 1005 | pr_debug("%s: re-probe ...\n", DRIVER_NAME); |
| 1006 | msleep(10); |
| 1007 | } |
| 1008 | |
david-b@pacbell.net | 65fc50e | 2005-06-29 07:13:00 -0700 | [diff] [blame] | 1009 | #ifdef CONFIG_ARM |
David Brownell | 72cd799 | 2005-05-24 17:34:51 -0700 | [diff] [blame] | 1010 | if (machine_is_omap_osk()) { |
| 1011 | |
| 1012 | // FIXME: More should be placed in the initialization code |
| 1013 | // of the submodules (DSP, ethernet, power management, |
| 1014 | // board-osk.c). Careful: I2C is initialized "late". |
| 1015 | |
| 1016 | /* Let LED1 (D9) blink */ |
| 1017 | tps65010_set_led(LED1, BLINK); |
| 1018 | |
| 1019 | /* Disable LED 2 (D2) */ |
| 1020 | tps65010_set_led(LED2, OFF); |
| 1021 | |
| 1022 | /* Set GPIO 1 HIGH to disable VBUS power supply; |
| 1023 | * OHCI driver powers it up/down as needed. |
| 1024 | */ |
| 1025 | tps65010_set_gpio_out_value(GPIO1, HIGH); |
| 1026 | |
| 1027 | /* Set GPIO 2 low to turn on LED D3 */ |
| 1028 | tps65010_set_gpio_out_value(GPIO2, HIGH); |
| 1029 | |
| 1030 | /* Set GPIO 3 low to take ethernet out of reset */ |
| 1031 | tps65010_set_gpio_out_value(GPIO3, LOW); |
| 1032 | |
| 1033 | /* gpio4 for VDD_DSP */ |
| 1034 | |
| 1035 | /* Enable LOW_PWR */ |
| 1036 | tps65010_set_low_pwr(ON); |
| 1037 | |
| 1038 | /* Switch VLDO2 to 3.0V for AIC23 */ |
| 1039 | tps65010_config_vregs1(TPS_LDO2_ENABLE | TPS_VLDO2_3_0V | TPS_LDO1_ENABLE); |
| 1040 | |
| 1041 | } else if (machine_is_omap_h2()) { |
| 1042 | /* gpio3 for SD, gpio4 for VDD_DSP */ |
| 1043 | |
| 1044 | /* Enable LOW_PWR */ |
| 1045 | tps65010_set_low_pwr(ON); |
| 1046 | } else if (machine_is_omap_h3()) { |
| 1047 | /* gpio4 for SD, gpio3 for VDD_DSP */ |
| 1048 | #ifdef CONFIG_PM |
| 1049 | /* Enable LOW_PWR */ |
| 1050 | tps65013_set_low_pwr(ON); |
| 1051 | #endif |
| 1052 | } |
| 1053 | #endif |
| 1054 | |
| 1055 | return status; |
| 1056 | } |
| 1057 | /* NOTE: this MUST be initialized before the other parts of the system |
| 1058 | * that rely on it ... but after the i2c bus on which this relies. |
| 1059 | * That is, much earlier than on PC-type systems, which don't often use |
| 1060 | * I2C as a core system bus. |
| 1061 | */ |
| 1062 | subsys_initcall(tps_init); |
| 1063 | |
| 1064 | static void __exit tps_exit(void) |
| 1065 | { |
| 1066 | i2c_del_driver(&tps65010_driver); |
| 1067 | } |
| 1068 | module_exit(tps_exit); |
| 1069 | |