target/linux/s3c24xx/patches-2.6.24/1161-add-resume-reason-sysfs.patch.patch

   1 From 595053e2185b896afe50af6bb48c082e3adcdd31 Mon Sep 17 00:00:00 2001
   2 From: Andy Green <andy@openmoko.com>
   3 Date: Mon, 26 May 2008 12:39:29 +0100
   4 Subject: [PATCH] add-resume-reason-sysfs.patch
   5
   6 If you have U-Boot with uboot-add-find-wake-reason.patch, this
   7 patch will get you a wake reason report from
   8
   9 cat /sys/devices/platform/neo1973-resume.0/resume_reason
  10
  11 it looks like this:
  12
  13   EINT00_ACCEL1
  14   EINT01_GSM
  15   EINT02_BLUETOOTH
  16   EINT03_DEBUGBRD
  17   EINT04_JACK
  18   EINT05_WLAN
  19   EINT06_AUXKEY
  20   EINT07_HOLDKEY
  21   EINT08_ACCEL2
  22 * EINT09_PMU
  23     adpins
  24     adprem
  25     usbins
  26     usbrem
  27     rtcalarm
  28     second
  29     onkeyr
  30     onkeyf
  31     exton1r
  32     exton1f
  33     exton2r
  34     exton2f
  35     exton3r
  36     exton3f
  37   * batfull
  38     chghalt
  39     thlimon
  40     thlimoff
  41     usblimon
  42     usblimoff
  43     adcrdy
  44     onkey1s
  45     lowsys
  46     lowbat
  47     hightmp
  48     autopwrfail
  49     dwn1pwrfail
  50     dwn2pwrfail
  51     ledpwrfail
  52     ledovp
  53     ldo1pwrfail
  54     ldo2pwrfail
  55     ldo3pwrfail
  56     ldo4pwrfail
  57     ldo5pwrfail
  58     ldo6pwrfail
  59     hcidopwrfail
  60     hcidoovl
  61   EINT10_NULL
  62   EINT11_NULL
  63   EINT12_GLAMO
  64   EINT13_NULL
  65   EINT14_NULL
  66   EINT15_NULL
  67
  68 This shows a problem, false wake from suspend due to battery full
  69
  70 Signed-off-by: Andy Green <andy@openmoko.com>
  71 ---
  72  arch/arm/mach-s3c2440/mach-gta02.c               |    5 +
  73  arch/arm/plat-s3c24xx/Makefile                   |    4 +-
  74  arch/arm/plat-s3c24xx/neo1973_pm_resume_reason.c |  134 ++++++++++++++++++++++
  75  drivers/i2c/chips/pcf50633.c                     |   80 +++++++++++++
  76  include/linux/pcf50633.h                         |    4 +
  77  5 files changed, 225 insertions(+), 2 deletions(-)
  78  create mode 100644 arch/arm/plat-s3c24xx/neo1973_pm_resume_reason.c
  79
  80 diff --git a/arch/arm/mach-s3c2440/mach-gta02.c b/arch/arm/mach-s3c2440/mach-gta02.c
  81 index 9e8fae7..90b62c1 100644
  82 --- a/arch/arm/mach-s3c2440/mach-gta02.c
  83 +++ b/arch/arm/mach-s3c2440/mach-gta02.c
  84 @@ -378,6 +378,10 @@ struct platform_device gta02_version_device = {
  85         .num_resources  = 0,
  86  };
  87
  88 +struct platform_device gta02_resume_reason_device = {
  89 +       .name           = "neo1973-resume",
  90 +       .num_resources  = 0,
  91 +};
  92
  93  static struct map_desc gta02_iodesc[] __initdata = {
  94         {
  95 @@ -737,6 +741,7 @@ static struct platform_device *gta02_devices[] __initdata = {
  96         &gta02_nor_flash,
  97         &sc32440_fiq_device,
  98         &gta02_version_device,
  99 +       &gta02_resume_reason_device,
 100         &s3c24xx_pwm_device,
 101  };
 102
 103 diff --git a/arch/arm/plat-s3c24xx/Makefile b/arch/arm/plat-s3c24xx/Makefile
 104 index 0efcc15..21f5159 100644
 105 --- a/arch/arm/plat-s3c24xx/Makefile
 106 +++ b/arch/arm/plat-s3c24xx/Makefile
 107 @@ -33,5 +33,5 @@ obj-$(CONFIG_MACH_NEO1973)    += neo1973_version.o \
 108                                    neo1973_pm_gsm.o \
 109                                    neo1973_pm_gps.o \
 110                                    neo1973_pm_bt.o  \
 111 -                                  neo1973_shadow.o
 112 -
 113 +                                  neo1973_shadow.o \
 114 +                                  neo1973_pm_resume_reason.o
 115 diff --git a/arch/arm/plat-s3c24xx/neo1973_pm_resume_reason.c b/arch/arm/plat-s3c24xx/neo1973_pm_resume_reason.c
 116 new file mode 100644
 117 index 0000000..cca42dc
 118 --- /dev/null
 119 +++ b/arch/arm/plat-s3c24xx/neo1973_pm_resume_reason.c
 120 @@ -0,0 +1,134 @@
 121 +/*
 122 + * Resume reason sysfs for the FIC Neo1973 GSM Phone
 123 + *
 124 + * (C) 2008 by Openmoko Inc.
 125 + * Author: Andy Green <andy@openmoko.com>
 126 + * All rights reserved.
 127 + *
 128 + * This program is free software; you can redistribute it and/or modify
 129 + * it under the terms of the GNU General Public License resume_reason 2 as
 130 + * published by the Free Software Foundation
 131 + *
 132 + */
 133 +
 134 +#include <linux/module.h>
 135 +#include <linux/init.h>
 136 +#include <linux/kernel.h>
 137 +#include <linux/platform_device.h>
 138 +#include <linux/io.h>
 139 +
 140 +#include <asm/hardware.h>
 141 +#include <asm/mach-types.h>
 142 +
 143 +#ifdef CONFIG_MACH_NEO1973_GTA02
 144 +#include <asm/arch/gta02.h>
 145 +#include <linux/pcf50633.h>
 146 +
 147 +
 148 +static unsigned int *gstatus4_mapped;
 149 +static char *resume_reasons[] = {
 150 +       "EINT00_ACCEL1",
 151 +       "EINT01_GSM",
 152 +       "EINT02_BLUETOOTH",
 153 +       "EINT03_DEBUGBRD",
 154 +       "EINT04_JACK",
 155 +       "EINT05_WLAN",
 156 +       "EINT06_AUXKEY",
 157 +       "EINT07_HOLDKEY",
 158 +       "EINT08_ACCEL2",
 159 +       "EINT09_PMU",
 160 +       "EINT10_NULL",
 161 +       "EINT11_NULL",
 162 +       "EINT12_GLAMO",
 163 +       "EINT13_NULL",
 164 +       "EINT14_NULL",
 165 +       "EINT15_NULL",
 166 +       NULL
 167 +};
 168 +
 169 +static ssize_t resume_reason_read(struct device *dev,
 170 +                                 struct device_attribute *attr,
 171 +                                 char *buf)
 172 +{
 173 +       int bit = 0;
 174 +       char *end = buf;
 175 +
 176 +       for (bit = 0; resume_reasons[bit]; bit++) {
 177 +               if ((*gstatus4_mapped) & (1 << bit))
 178 +                       end += sprintf(end, "* %s\n", resume_reasons[bit]);
 179 +               else
 180 +                       end += sprintf(end, "  %s\n", resume_reasons[bit]);
 181 +
 182 +               if (bit == 9) /* PMU */
 183 +                       end += pcf50633_report_resumers(pcf50633_global, end);
 184 +       }
 185 +
 186 +       return end - buf;
 187 +}
 188 +
 189 +
 190 +static DEVICE_ATTR(resume_reason, 0644, resume_reason_read, NULL);
 191 +
 192 +static struct attribute *neo1973_resume_reason_sysfs_entries[] = {
 193 +       &dev_attr_resume_reason.attr,
 194 +       NULL
 195 +};
 196 +
 197 +static struct attribute_group neo1973_resume_reason_attr_group = {
 198 +       .name   = NULL,
 199 +       .attrs  = neo1973_resume_reason_sysfs_entries,
 200 +};
 201 +
 202 +static int __init neo1973_resume_reason_probe(struct platform_device *pdev)
 203 +{
 204 +       dev_info(&pdev->dev, "starting\n");
 205 +
 206 +       switch (machine_arch_type) {
 207 +#ifdef CONFIG_MACH_NEO1973_GTA01
 208 +       case MACH_TYPE_NEO1973_GTA01:
 209 +               return -EINVAL;
 210 +#endif /* CONFIG_MACH_NEO1973_GTA01 */
 211 +       default:
 212 +               gstatus4_mapped = ioremap(0x560000BC, 0x4);
 213 +               if (!gstatus4_mapped) {
 214 +                       dev_err(&pdev->dev, "failed to ioremap() memory region\n");
 215 +                       return -EINVAL;
 216 +               }
 217 +               break;
 218 +       }
 219 +
 220 +       return sysfs_create_group(&pdev->dev.kobj, &neo1973_resume_reason_attr_group);
 221 +}
 222 +
 223 +static int neo1973_resume_reason_remove(struct platform_device *pdev)
 224 +{
 225 +       sysfs_remove_group(&pdev->dev.kobj, &neo1973_resume_reason_attr_group);
 226 +       iounmap(gstatus4_mapped);
 227 +       return 0;
 228 +}
 229 +
 230 +static struct platform_driver neo1973_resume_reason_driver = {
 231 +       .probe          = neo1973_resume_reason_probe,
 232 +       .remove         = neo1973_resume_reason_remove,
 233 +       .driver         = {
 234 +               .name           = "neo1973-resume",
 235 +       },
 236 +};
 237 +
 238 +static int __devinit neo1973_resume_reason_init(void)
 239 +{
 240 +       return platform_driver_register(&neo1973_resume_reason_driver);
 241 +}
 242 +
 243 +static void neo1973_resume_reason_exit(void)
 244 +{
 245 +       platform_driver_unregister(&neo1973_resume_reason_driver);
 246 +}
 247 +
 248 +module_init(neo1973_resume_reason_init);
 249 +module_exit(neo1973_resume_reason_exit);
 250 +
 251 +MODULE_LICENSE("GPL");
 252 +MODULE_AUTHOR("Andy Green <andy@openmoko.com>");
 253 +MODULE_DESCRIPTION("Neo1973 resume_reason");
 254 +#endif
 255 diff --git a/drivers/i2c/chips/pcf50633.c b/drivers/i2c/chips/pcf50633.c
 256 index e3f0271..6d07aa5 100644
 257 --- a/drivers/i2c/chips/pcf50633.c
 258 +++ b/drivers/i2c/chips/pcf50633.c
 259 @@ -120,6 +120,8 @@ struct pcf50633_data {
 260         int allow_close;
 261         int onkey_seconds;
 262         int irq;
 263 +       int have_been_suspended;
 264 +       unsigned char pcfirq_resume[5];
 265
 266         int coldplug_done; /* cleared by probe, set by first work service */
 267         int flag_bat_voltage_read; /* ipc to /sys batt voltage read func */
 268 @@ -597,6 +599,17 @@ static void pcf50633_work(struct work_struct *work)
 269                 return;
 270         }
 271
 272 +       /* hey did we just resume? */
 273 +
 274 +       if (pcf->have_been_suspended) {
 275 +               pcf->have_been_suspended = 0;
 276 +               /*
 277 +                * grab a copy of resume interrupt reasons
 278 +                * from pcf50633 POV
 279 +                */
 280 +               memcpy(pcf->pcfirq_resume, pcfirq, sizeof(pcf->pcfirq_resume));
 281 +       }
 282 +
 283         if (!pcf->coldplug_done) {
 284                 DEBUGP("PMU Coldplug init\n");
 285
 286 @@ -1866,6 +1879,71 @@ static int pcf50633_detach_client(struct i2c_client *client)
 287         return 0;
 288  }
 289
 290 +/* you're going to need >300 bytes in buf */
 291 +
 292 +int pcf50633_report_resumers(struct pcf50633_data *pcf, char *buf)
 293 +{
 294 +       static char *int_names[] = {
 295 +               "adpins",
 296 +               "adprem",
 297 +               "usbins",
 298 +               "usbrem",
 299 +               NULL,
 300 +               NULL,
 301 +               "rtcalarm",
 302 +               "second",
 303 +
 304 +               "onkeyr",
 305 +               "onkeyf",
 306 +               "exton1r",
 307 +               "exton1f",
 308 +               "exton2r",
 309 +               "exton2f",
 310 +               "exton3r",
 311 +               "exton3f",
 312 +
 313 +               "batfull",
 314 +               "chghalt",
 315 +               "thlimon",
 316 +               "thlimoff",
 317 +               "usblimon",
 318 +               "usblimoff",
 319 +               "adcrdy",
 320 +               "onkey1s",
 321 +
 322 +               "lowsys",
 323 +               "lowbat",
 324 +               "hightmp",
 325 +               "autopwrfail",
 326 +               "dwn1pwrfail",
 327 +               "dwn2pwrfail",
 328 +               "ledpwrfail",
 329 +               "ledovp",
 330 +
 331 +               "ldo1pwrfail",
 332 +               "ldo2pwrfail",
 333 +               "ldo3pwrfail",
 334 +               "ldo4pwrfail",
 335 +               "ldo5pwrfail",
 336 +               "ldo6pwrfail",
 337 +               "hcidopwrfail",
 338 +               "hcidoovl"
 339 +       };
 340 +       char *end = buf;
 341 +       int n;
 342 +
 343 +       for (n = 0; n < 40; n++)
 344 +               if (int_names[n]) {
 345 +                       if (pcf->pcfirq_resume[n >> 3] & (1 >> (n & 7)))
 346 +                               end += sprintf(end, "  * %s\n", int_names[n]);
 347 +                       else
 348 +                               end += sprintf(end, "    %s\n", int_names[n]);
 349 +               }
 350 +
 351 +       return end - buf;
 352 +}
 353 +
 354 +
 355  #ifdef CONFIG_PM
 356  #define INT1M_RESUMERS (PCF50633_INT1_ADPINS           | \
 357                          PCF50633_INT1_ADPREM           | \
 358 @@ -1948,6 +2026,8 @@ static int pcf50633_suspend(struct device *dev, pm_message_t state)
 359         __reg_write(pcf, PCF50633_REG_INT4M, ~INT4M_RESUMERS & 0xff);
 360         __reg_write(pcf, PCF50633_REG_INT5M, ~INT5M_RESUMERS & 0xff);
 361
 362 +       pcf->have_been_suspended = 1;
 363 +
 364         mutex_unlock(&pcf->lock);
 365
 366         return 0;
 367 diff --git a/include/linux/pcf50633.h b/include/linux/pcf50633.h
 368 index 05b55f3..be3957f 100644
 369 --- a/include/linux/pcf50633.h
 370 +++ b/include/linux/pcf50633.h
 371 @@ -67,6 +67,10 @@ pcf50633_backlight_resume(struct pcf50633_data *pcf);
 372  extern u_int16_t
 373  pcf50633_battvolt(struct pcf50633_data *pcf);
 374
 375 +extern int
 376 +pcf50633_report_resumers(struct pcf50633_data *pcf, char *buf);
 377 +
 378 +
 379  #define PCF50633_FEAT_EXTON    0x00000001      /* not yet supported */
 380  #define PCF50633_FEAT_MBC      0x00000002
 381  #define PCF50633_FEAT_BBC      0x00000004      /* not yet supported */
 382 --
 383 1.5.6.5
 384