target/linux/omap24xx/patches-2.6.36/510-retu-tahvo-user-debugging.patch

   1 ---
   2  drivers/cbus/Kconfig      |    8 +++
   3  drivers/cbus/retu-user.c  |  117 +++++++++++++++++++++++++++++++++++++++++++++-
   4  drivers/cbus/tahvo-user.c |   75 +++++++++++++++++++++++++++++
   5  3 files changed, 198 insertions(+), 2 deletions(-)
   6
   7 --- linux-2.6.36-rc4.orig/drivers/cbus/Kconfig
   8 +++ linux-2.6.36-rc4/drivers/cbus/Kconfig
   9 @@ -28,6 +28,10 @@ config CBUS_TAHVO_USER
  10           If you want support for Tahvo's user space read/write etc. functions,
  11           you should say Y here.
  12
  13 +config CBUS_TAHVO_USER_DEBUG
  14 +       depends on CBUS_TAHVO_USER
  15 +       bool "Enable Tahvo user space interface debugging"
  16 +
  17  config CBUS_TAHVO_USB
  18         depends on CBUS_TAHVO && USB
  19         tristate "Support for Tahvo USB transceiver"
  20 @@ -56,6 +60,10 @@ config CBUS_RETU_USER
  21           If you want support for Retu's user space read/write etc. functions,
  22           you should say Y here.
  23
  24 +config CBUS_RETU_USER_DEBUG
  25 +       depends on CBUS_RETU_USER
  26 +       bool "Enable Retu user space interface debugging"
  27 +
  28  config CBUS_RETU_POWERBUTTON
  29         depends on CBUS_RETU
  30         bool "Support for Retu power button"
  31 --- linux-2.6.36-rc4.orig/drivers/cbus/retu-user.c
  32 +++ linux-2.6.36-rc4/drivers/cbus/retu-user.c
  33 @@ -46,6 +46,12 @@
  34
  35  #define PFX                    "retu-user: "
  36
  37 +#ifdef CONFIG_CBUS_RETU_USER_DEBUG
  38 +# define dprintk(fmt, x...)    printk(KERN_DEBUG PFX fmt, x)
  39 +#else
  40 +# define dprintk(fmt, x...)    do { } while (0)
  41 +#endif
  42 +
  43  /* Bitmap for marking the interrupt sources as having the handlers */
  44  static u32 retu_irq_bits;
  45
  46 @@ -105,6 +111,94 @@ static const u8 retu_access_bits[] = {
  47         3
  48  };
  49
  50 +#ifdef CONFIG_CBUS_RETU_USER_DEBUG
  51 +static const char * reg_access_text(unsigned int reg)
  52 +{
  53 +       if (WARN_ON(reg >= ARRAY_SIZE(retu_access_bits)))
  54 +               return "X";
  55 +       switch (retu_access_bits[reg]) {
  56 +       case READ_ONLY:
  57 +               return "R";
  58 +       case WRITE_ONLY:
  59 +               return "W";
  60 +       case READ_WRITE:
  61 +               return "RW";
  62 +       case TOGGLE:
  63 +               return "T";
  64 +       }
  65 +       return "X";
  66 +}
  67 +
  68 +static const char * reg_name(unsigned int reg)
  69 +{
  70 +       static const char *names[] = {
  71 +               [RETU_REG_ASICR]        = "ASIC ID & revision",
  72 +               [RETU_REG_IDR]          = "Interrupt ID",
  73 +               [RETU_REG_IMR]          = "Interrupt mask",
  74 +               [RETU_REG_RTCDSR]       = "RTC seconds register",
  75 +               [RETU_REG_RTCHMR]       = "RTC hours and minutes register",
  76 +               [RETU_REG_RTCHMAR]      = "hours and minutes alarm and time set register",
  77 +               [RETU_REG_RTCCALR]      = "RTC calibration register",
  78 +               [RETU_REG_ADCR]         = "ADC result",
  79 +               [RETU_REG_ADCSCR]       = "ADC sample ctrl",
  80 +               [RETU_REG_CC1]          = "Common control register 1",
  81 +               [RETU_REG_CC2]          = "Common control register 2",
  82 +               [RETU_REG_CTRL_CLR]     = "Regulator clear register",
  83 +               [RETU_REG_CTRL_SET]     = "Regulator set register",
  84 +               [RETU_REG_STATUS]       = "Status register",
  85 +               [RETU_REG_WATCHDOG]     = "Watchdog register",
  86 +               [RETU_REG_AUDTXR]       = "Audio Codec Tx register",
  87 +               [0x14]                  = "Charger detect?",
  88 +       };
  89 +       const char *name;
  90 +
  91 +       if (reg >= ARRAY_SIZE(names))
  92 +               return "";
  93 +       name = names[reg];
  94 +       if (!name)
  95 +               return "";
  96 +       return name;
  97 +}
  98 +
  99 +static const char * adc_chan_name(unsigned int chan)
 100 +{
 101 +       static const char *names[] = {
 102 +               [0x05]          = "Headset hook detect",
 103 +       };
 104 +       const char *name;
 105 +
 106 +       if (chan >= ARRAY_SIZE(names))
 107 +               return "";
 108 +       name = names[chan];
 109 +       if (!name)
 110 +               return "";
 111 +       return name;
 112 +}
 113 +
 114 +static const char * retu_irq_name(unsigned int id)
 115 +{
 116 +       static const char *names[] = {
 117 +               [RETU_INT_PWR]          = "Power",
 118 +               [RETU_INT_CHAR]         = "Char",
 119 +               [RETU_INT_RTCS]         = "RTCS",
 120 +               [RETU_INT_RTCM]         = "RTCM",
 121 +               [RETU_INT_RTCD]         = "RTCD",
 122 +               [RETU_INT_RTCA]         = "RTCA",
 123 +               [RETU_INT_HOOK]         = "Hook",
 124 +               [RETU_INT_HEAD]         = "Head",
 125 +               [RETU_INT_ADCS]         = "ADC timer",
 126 +       };
 127 +       const char *name;
 128 +
 129 +       if (id >= ARRAY_SIZE(names))
 130 +               return "";
 131 +       name = names[id];
 132 +       if (!name)
 133 +               return "";
 134 +       return name;
 135 +}
 136 +#endif
 137 +
 138  /*
 139   * The handler for all RETU interrupts.
 140   *
 141 @@ -157,6 +251,8 @@ static int retu_user_subscribe_to_irq(in
 142         /* Mark that this interrupt has a handler */
 143         retu_irq_bits |= 1 << id;
 144
 145 +       dprintk("Subscribed to IRQ %d (%s)\n", id, retu_irq_name(id));
 146 +
 147         return 0;
 148  }
 149
 150 @@ -216,6 +312,10 @@ static int retu_user_write_with_mask(u32
 151
 152         /* Generate new value */
 153         tmp = (tmp & ~MASK(field)) | (value & MASK(field));
 154 +
 155 +       dprintk("{WRITE %s} 0x%02X(%s) <= msk 0x%04X, val 0x%04X ==> res 0x%04X\n",
 156 +               reg_name(reg), reg, reg_access_text(reg), MASK(field), value, tmp);
 157 +
 158         /* Write data to RETU */
 159         retu_write_reg(reg, tmp);
 160         spin_unlock_irqrestore(&retu_lock, flags);
 161 @@ -244,6 +344,9 @@ static u32 retu_user_read_with_mask(u32
 162         /* Read the register */
 163         value = retu_read_reg(reg) & mask;
 164
 165 +       dprintk("{READ %s} 0x%02X(%s) <= msk 0x%04X ==> res 0x%04X\n",
 166 +               reg_name(reg), reg, reg_access_text(reg), mask, value);
 167 +
 168         /* Right justify value */
 169         while (!(mask & 1)) {
 170                 value = value >> 1;
 171 @@ -273,7 +376,7 @@ static int retu_close(struct inode *inod
 172  static long retu_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
 173  {
 174         struct retu_tahvo_write_parms par;
 175 -       int ret;
 176 +       int ret, result;
 177
 178         switch (cmd) {
 179         case URT_IOCT_IRQ_SUBSCR:
 180 @@ -290,7 +393,15 @@ static long retu_ioctl(struct file *filp
 181                         printk(KERN_ERR "copy_to_user failed: %d\n", ret);
 182                 break;
 183         case RETU_IOCH_ADC_READ:
 184 -               return retu_read_adc(arg);
 185 +               result = retu_read_adc(arg);
 186 +               if (result >= 0) {
 187 +                       dprintk("{READ-ADC %s} chan 0x%02lX ==> result 0x%04X\n",
 188 +                               adc_chan_name(arg), arg, result);
 189 +               } else {
 190 +                       dprintk("{READ-ADC %s} chan 0x%02lX ==> failed %d\n",
 191 +                               adc_chan_name(arg), arg, result);
 192 +               }
 193 +               return result;
 194         default:
 195                 return -ENOIOCTLCMD;
 196         }
 197 @@ -332,6 +443,8 @@ static ssize_t retu_read(struct file *fi
 198                 list_move(&irq->node, &retu_irqs_reserve);
 199                 spin_unlock_irqrestore(&retu_irqs_lock, flags);
 200
 201 +               dprintk("{IRQ %s} %d delivered\n", retu_irq_name(irq_id), (int)irq_id);
 202 +
 203                 ret = copy_to_user(buf + i * sizeof(irq_id), &irq_id,
 204                                    sizeof(irq_id));
 205                 if (ret)
 206 --- linux-2.6.36-rc4.orig/drivers/cbus/tahvo-user.c
 207 +++ linux-2.6.36-rc4/drivers/cbus/tahvo-user.c
 208 @@ -46,6 +46,12 @@
 209
 210  #define PFX                    "tahvo-user: "
 211
 212 +#ifdef CONFIG_CBUS_TAHVO_USER_DEBUG
 213 +# define dprintk(fmt, x...)    printk(KERN_DEBUG PFX fmt, x)
 214 +#else
 215 +# define dprintk(fmt, x...)    do { } while (0)
 216 +#endif
 217 +
 218  /* Bitmap for marking the interrupt sources as having the handlers */
 219  static u32 tahvo_irq_bits;
 220
 221 @@ -87,6 +93,64 @@ static const u8 tahvo_access_bits[] = {
 222         1
 223  };
 224
 225 +#ifdef CONFIG_CBUS_TAHVO_USER_DEBUG
 226 +static const char * reg_access_text(unsigned int reg)
 227 +{
 228 +       if (WARN_ON(reg >= ARRAY_SIZE(tahvo_access_bits)))
 229 +               return "X";
 230 +       switch (tahvo_access_bits[reg]) {
 231 +       case READ_ONLY:
 232 +               return "R";
 233 +       case WRITE_ONLY:
 234 +               return "W";
 235 +       case READ_WRITE:
 236 +               return "RW";
 237 +       case TOGGLE:
 238 +               return "T";
 239 +       }
 240 +       return "X";
 241 +}
 242 +
 243 +static const char * reg_name(unsigned int reg)
 244 +{
 245 +       static const char *names[] = {
 246 +               [TAHVO_REG_ASICR]       = "ASIC ID & revision",
 247 +               [TAHVO_REG_IDR]         = "Interrupt ID",
 248 +               [TAHVO_REG_IDSR]        = "Interrupt status",
 249 +               [TAHVO_REG_IMR]         = "Interrupt mask",
 250 +               [TAHVO_REG_LEDPWMR]     = "LED PWM",
 251 +               [TAHVO_REG_USBR]        = "USB control",
 252 +               [0x04]                  = "Charge current control?",
 253 +               [0x08]                  = "Charge ctl 1?",
 254 +               [0x0C]                  = "Charge ctl 2?",
 255 +               [0x0D]                  = "Battery current ADC?",
 256 +       };
 257 +       const char *name;
 258 +
 259 +       if (reg >= ARRAY_SIZE(names))
 260 +               return "";
 261 +       name = names[reg];
 262 +       if (!name)
 263 +               return "";
 264 +       return name;
 265 +}
 266 +
 267 +static const char * tahvo_irq_name(unsigned int id)
 268 +{
 269 +       static const char *names[] = {
 270 +               [TAHVO_INT_VBUSON]      = "VBUSON",
 271 +       };
 272 +       const char *name;
 273 +
 274 +       if (id >= ARRAY_SIZE(names))
 275 +               return "";
 276 +       name = names[id];
 277 +       if (!name)
 278 +               return "";
 279 +       return name;
 280 +}
 281 +#endif
 282 +
 283  /*
 284   * The handler for all TAHVO interrupts.
 285   *
 286 @@ -142,6 +206,8 @@ static int tahvo_user_subscribe_to_irq(i
 287         /* Mark that this interrupt has a handler */
 288         tahvo_irq_bits |= 1 << id;
 289
 290 +       dprintk("Subscribed to IRQ %d (%s)\n", id, tahvo_irq_name(id));
 291 +
 292         return 0;
 293  }
 294
 295 @@ -200,6 +266,10 @@ static int tahvo_user_write_with_mask(u3
 296         }
 297         /* Generate a new value */
 298         tmp = (tmp & ~MASK(field)) | (value & MASK(field));
 299 +
 300 +       dprintk("{WRITE %s} 0x%02X(%s) <= msk 0x%04X, val 0x%04X ==> res 0x%04X\n",
 301 +               reg_name(reg), reg, reg_access_text(reg), MASK(field), value, tmp);
 302 +
 303         /* Write data to TAHVO */
 304         tahvo_write_reg(reg, tmp);
 305         spin_unlock_irqrestore(&tahvo_lock, flags);
 306 @@ -228,6 +298,9 @@ static u32 tahvo_user_read_with_mask(u32
 307         /* Read the register */
 308         value = tahvo_read_reg(reg) & mask;
 309
 310 +       dprintk("{READ %s} 0x%02X(%s) <= msk 0x%04X ==> res 0x%04X\n",
 311 +               reg_name(reg), reg, reg_access_text(reg), mask, value);
 312 +
 313         /* Right justify value */
 314         while (!(mask & 1)) {
 315                 value = value >> 1;
 316 @@ -314,6 +387,8 @@ static ssize_t tahvo_read(struct file *f
 317                 list_move(&irq->node, &tahvo_irqs_reserve);
 318                 spin_unlock_irqrestore(&tahvo_irqs_lock, flags);
 319
 320 +               dprintk("{IRQ %s} %d delivered\n", tahvo_irq_name(irq_id), (int)irq_id);
 321 +
 322                 ret = copy_to_user(buf + i * sizeof(irq_id), &irq_id,
 323                                    sizeof(irq_id));
 324                 if (ret)