target/linux/lantiq/patches-4.9/0008-MIPS-lantiq-backport-old-timer-code.patch

   1 From 94800350cb8d2f29dda2206b5e9a3772024ee168 Mon Sep 17 00:00:00 2001
   2 From: John Crispin <blogic@openwrt.org>
   3 Date: Thu, 7 Aug 2014 18:30:56 +0200
   4 Subject: [PATCH 08/36] MIPS: lantiq: backport old timer code
   5
   6 Signed-off-by: John Crispin <blogic@openwrt.org>
   7 ---
   8  arch/mips/include/asm/mach-lantiq/lantiq_timer.h |  155 ++++
   9  arch/mips/lantiq/xway/Makefile                   |    2 +-
  10  arch/mips/lantiq/xway/timer.c                    |  845 ++++++++++++++++++++++
  11  3 files changed, 1001 insertions(+), 1 deletion(-)
  12  create mode 100644 arch/mips/include/asm/mach-lantiq/lantiq_timer.h
  13  create mode 100644 arch/mips/lantiq/xway/timer.c
  14
  15 --- /dev/null
  16 +++ b/arch/mips/include/asm/mach-lantiq/lantiq_timer.h
  17 @@ -0,0 +1,155 @@
  18 +#ifndef __DANUBE_GPTU_DEV_H__2005_07_26__10_19__
  19 +#define __DANUBE_GPTU_DEV_H__2005_07_26__10_19__
  20 +
  21 +
  22 +/******************************************************************************
  23 +       Copyright (c) 2002, Infineon Technologies.  All rights reserved.
  24 +
  25 +                               No Warranty
  26 +   Because the program is licensed free of charge, there is no warranty for
  27 +   the program, to the extent permitted by applicable law.  Except when
  28 +   otherwise stated in writing the copyright holders and/or other parties
  29 +   provide the program "as is" without warranty of any kind, either
  30 +   expressed or implied, including, but not limited to, the implied
  31 +   warranties of merchantability and fitness for a particular purpose. The
  32 +   entire risk as to the quality and performance of the program is with
  33 +   you.  should the program prove defective, you assume the cost of all
  34 +   necessary servicing, repair or correction.
  35 +
  36 +   In no event unless required by applicable law or agreed to in writing
  37 +   will any copyright holder, or any other party who may modify and/or
  38 +   redistribute the program as permitted above, be liable to you for
  39 +   damages, including any general, special, incidental or consequential
  40 +   damages arising out of the use or inability to use the program
  41 +   (including but not limited to loss of data or data being rendered
  42 +   inaccurate or losses sustained by you or third parties or a failure of
  43 +   the program to operate with any other programs), even if such holder or
  44 +   other party has been advised of the possibility of such damages.
  45 +******************************************************************************/
  46 +
  47 +
  48 +/*
  49 + * ####################################
  50 + *              Definition
  51 + * ####################################
  52 + */
  53 +
  54 +/*
  55 + *  Available Timer/Counter Index
  56 + */
  57 +#define TIMER(n, X)                     (n * 2 + (X ? 1 : 0))
  58 +#define TIMER_ANY                       0x00
  59 +#define TIMER1A                         TIMER(1, 0)
  60 +#define TIMER1B                         TIMER(1, 1)
  61 +#define TIMER2A                         TIMER(2, 0)
  62 +#define TIMER2B                         TIMER(2, 1)
  63 +#define TIMER3A                         TIMER(3, 0)
  64 +#define TIMER3B                         TIMER(3, 1)
  65 +
  66 +/*
  67 + *  Flag of Timer/Counter
  68 + *  These flags specify the way in which timer is configured.
  69 + */
  70 +/*  Bit size of timer/counter.                      */
  71 +#define TIMER_FLAG_16BIT                0x0000
  72 +#define TIMER_FLAG_32BIT                0x0001
  73 +/*  Switch between timer and counter.               */
  74 +#define TIMER_FLAG_TIMER                0x0000
  75 +#define TIMER_FLAG_COUNTER              0x0002
  76 +/*  Stop or continue when overflowing/underflowing. */
  77 +#define TIMER_FLAG_ONCE                 0x0000
  78 +#define TIMER_FLAG_CYCLIC               0x0004
  79 +/*  Count up or counter down.                       */
  80 +#define TIMER_FLAG_UP                   0x0000
  81 +#define TIMER_FLAG_DOWN                 0x0008
  82 +/*  Count on specific level or edge.                */
  83 +#define TIMER_FLAG_HIGH_LEVEL_SENSITIVE 0x0000
  84 +#define TIMER_FLAG_LOW_LEVEL_SENSITIVE  0x0040
  85 +#define TIMER_FLAG_RISE_EDGE            0x0010
  86 +#define TIMER_FLAG_FALL_EDGE            0x0020
  87 +#define TIMER_FLAG_ANY_EDGE             0x0030
  88 +/*  Signal is syncronous to module clock or not.    */
  89 +#define TIMER_FLAG_UNSYNC               0x0000
  90 +#define TIMER_FLAG_SYNC                 0x0080
  91 +/*  Different interrupt handle type.                */
  92 +#define TIMER_FLAG_NO_HANDLE            0x0000
  93 +#if defined(__KERNEL__)
  94 +    #define TIMER_FLAG_CALLBACK_IN_IRQ  0x0100
  95 +#endif  //  defined(__KERNEL__)
  96 +#define TIMER_FLAG_SIGNAL               0x0300
  97 +/*  Internal clock source or external clock source  */
  98 +#define TIMER_FLAG_INT_SRC              0x0000
  99 +#define TIMER_FLAG_EXT_SRC              0x1000
 100 +
 101 +
 102 +/*
 103 + *  ioctl Command
 104 + */
 105 +#define GPTU_REQUEST_TIMER              0x01    /*  General method to setup timer/counter.  */
 106 +#define GPTU_FREE_TIMER                 0x02    /*  Free timer/counter.                     */
 107 +#define GPTU_START_TIMER                0x03    /*  Start or resume timer/counter.          */
 108 +#define GPTU_STOP_TIMER                 0x04    /*  Suspend timer/counter.                  */
 109 +#define GPTU_GET_COUNT_VALUE            0x05    /*  Get current count value.                */
 110 +#define GPTU_CALCULATE_DIVIDER          0x06    /*  Calculate timer divider from given freq.*/
 111 +#define GPTU_SET_TIMER                  0x07    /*  Simplified method to setup timer.       */
 112 +#define GPTU_SET_COUNTER                0x08    /*  Simplified method to setup counter.     */
 113 +
 114 +/*
 115 + *  Data Type Used to Call ioctl
 116 + */
 117 +struct gptu_ioctl_param {
 118 +    unsigned int                        timer;  /*  In command GPTU_REQUEST_TIMER, GPTU_SET_TIMER, and  *
 119 +                                                 *  GPTU_SET_COUNTER, this field is ID of expected      *
 120 +                                                 *  timer/counter. If it's zero, a timer/counter would  *
 121 +                                                 *  be dynamically allocated and ID would be stored in  *
 122 +                                                 *  this field.                                         *
 123 +                                                 *  In command GPTU_GET_COUNT_VALUE, this field is      *
 124 +                                                 *  ignored.                                            *
 125 +                                                 *  In other command, this field is ID of timer/counter *
 126 +                                                 *  allocated.                                          */
 127 +    unsigned int                        flag;   /*  In command GPTU_REQUEST_TIMER, GPTU_SET_TIMER, and  *
 128 +                                                 *  GPTU_SET_COUNTER, this field contains flags to      *
 129 +                                                 *  specify how to configure timer/counter.             *
 130 +                                                 *  In command GPTU_START_TIMER, zero indicate start    *
 131 +                                                 *  and non-zero indicate resume timer/counter.         *
 132 +                                                 *  In other command, this field is ignored.            */
 133 +    unsigned long                       value;  /*  In command GPTU_REQUEST_TIMER, this field contains  *
 134 +                                                 *  init/reload value.                                  *
 135 +                                                 *  In command GPTU_SET_TIMER, this field contains      *
 136 +                                                 *  frequency (0.001Hz) of timer.                       *
 137 +                                                 *  In command GPTU_GET_COUNT_VALUE, current count      *
 138 +                                                 *  value would be stored in this field.                *
 139 +                                                 *  In command GPTU_CALCULATE_DIVIDER, this field       *
 140 +                                                 *  contains frequency wanted, and after calculation,   *
 141 +                                                 *  divider would be stored in this field to overwrite  *
 142 +                                                 *  the frequency.                                      *
 143 +                                                 *  In other command, this field is ignored.            */
 144 +    int                                 pid;    /*  In command GPTU_REQUEST_TIMER and GPTU_SET_TIMER,   *
 145 +                                                 *  if signal is required, this field contains process  *
 146 +                                                 *  ID to which signal would be sent.                   *
 147 +                                                 *  In other command, this field is ignored.            */
 148 +    int                                 sig;    /*  In command GPTU_REQUEST_TIMER and GPTU_SET_TIMER,   *
 149 +                                                 *  if signal is required, this field contains signal   *
 150 +                                                 *  number which would be sent.                         *
 151 +                                                 *  In other command, this field is ignored.            */
 152 +};
 153 +
 154 +/*
 155 + * ####################################
 156 + *              Data Type
 157 + * ####################################
 158 + */
 159 +typedef void (*timer_callback)(unsigned long arg);
 160 +
 161 +extern int lq_request_timer(unsigned int, unsigned int, unsigned long, unsigned long, unsigned long);
 162 +extern int lq_free_timer(unsigned int);
 163 +extern int lq_start_timer(unsigned int, int);
 164 +extern int lq_stop_timer(unsigned int);
 165 +extern int lq_reset_counter_flags(u32 timer, u32 flags);
 166 +extern int lq_get_count_value(unsigned int, unsigned long *);
 167 +extern u32 lq_cal_divider(unsigned long);
 168 +extern int lq_set_timer(unsigned int, unsigned int, int, int, unsigned int, unsigned long, unsigned long);
 169 +extern int lq_set_counter(unsigned int timer, unsigned int flag,
 170 +       u32 reload, unsigned long arg1, unsigned long arg2);
 171 +
 172 +#endif /* __DANUBE_GPTU_DEV_H__2005_07_26__10_19__ */
 173 --- a/arch/mips/lantiq/xway/Makefile
 174 +++ b/arch/mips/lantiq/xway/Makefile
 175 @@ -1,4 +1,10 @@
 176 -obj-y := prom.o sysctrl.o clk.o reset.o dma.o gptu.o dcdc.o
 177 +obj-y := prom.o sysctrl.o clk.o reset.o dma.o dcdc.o
 178 +
 179 +ifdef CONFIG_SOC_AMAZON_SE
 180 +obj-y += gptu.o
 181 +else
 182 +obj-y += timer.o
 183 +endif
 184
 185  obj-y += vmmc.o
 186
 187 --- /dev/null
 188 +++ b/arch/mips/lantiq/xway/timer.c
 189 @@ -0,0 +1,845 @@
 190 +#ifndef CONFIG_SOC_AMAZON_SE
 191 +
 192 +#include <linux/kernel.h>
 193 +#include <linux/module.h>
 194 +#include <linux/version.h>
 195 +#include <linux/types.h>
 196 +#include <linux/fs.h>
 197 +#include <linux/miscdevice.h>
 198 +#include <linux/init.h>
 199 +#include <linux/uaccess.h>
 200 +#include <linux/unistd.h>
 201 +#include <linux/errno.h>
 202 +#include <linux/interrupt.h>
 203 +#include <linux/sched.h>
 204 +
 205 +#include <asm/irq.h>
 206 +#include <asm/div64.h>
 207 +#include "../clk.h"
 208 +
 209 +#include <lantiq_soc.h>
 210 +#include <lantiq_irq.h>
 211 +#include <lantiq_timer.h>
 212 +
 213 +#define MAX_NUM_OF_32BIT_TIMER_BLOCKS  6
 214 +
 215 +#ifdef TIMER1A
 216 +#define FIRST_TIMER                    TIMER1A
 217 +#else
 218 +#define FIRST_TIMER                    2
 219 +#endif
 220 +
 221 +/*
 222 + *  GPTC divider is set or not.
 223 + */
 224 +#define GPTU_CLC_RMC_IS_SET            0
 225 +
 226 +/*
 227 + *  Timer Interrupt (IRQ)
 228 + */
 229 +/*  Must be adjusted when ICU driver is available */
 230 +#define TIMER_INTERRUPT                        (INT_NUM_IM3_IRL0 + 22)
 231 +
 232 +/*
 233 + *  Bits Operation
 234 + */
 235 +#define GET_BITS(x, msb, lsb)          \
 236 +       (((x) & ((1 << ((msb) + 1)) - 1)) >> (lsb))
 237 +#define SET_BITS(x, msb, lsb, value)   \
 238 +       (((x) & ~(((1 << ((msb) + 1)) - 1) ^ ((1 << (lsb)) - 1))) | \
 239 +       (((value) & ((1 << (1 + (msb) - (lsb))) - 1)) << (lsb)))
 240 +
 241 +/*
 242 + *  GPTU Register Mapping
 243 + */
 244 +#define LQ_GPTU                        (KSEG1 + 0x1E100A00)
 245 +#define LQ_GPTU_CLC            ((volatile u32 *)(LQ_GPTU + 0x0000))
 246 +#define LQ_GPTU_ID                     ((volatile u32 *)(LQ_GPTU + 0x0008))
 247 +#define LQ_GPTU_CON(n, X)              ((volatile u32 *)(LQ_GPTU + 0x0010 + ((X) * 4) + ((n) - 1) * 0x0020))   /* X must be either A or B */
 248 +#define LQ_GPTU_RUN(n, X)              ((volatile u32 *)(LQ_GPTU + 0x0018 + ((X) * 4) + ((n) - 1) * 0x0020))   /* X must be either A or B */
 249 +#define LQ_GPTU_RELOAD(n, X)   ((volatile u32 *)(LQ_GPTU + 0x0020 + ((X) * 4) + ((n) - 1) * 0x0020))   /* X must be either A or B */
 250 +#define LQ_GPTU_COUNT(n, X)    ((volatile u32 *)(LQ_GPTU + 0x0028 + ((X) * 4) + ((n) - 1) * 0x0020))   /* X must be either A or B */
 251 +#define LQ_GPTU_IRNEN          ((volatile u32 *)(LQ_GPTU + 0x00F4))
 252 +#define LQ_GPTU_IRNICR         ((volatile u32 *)(LQ_GPTU + 0x00F8))
 253 +#define LQ_GPTU_IRNCR          ((volatile u32 *)(LQ_GPTU + 0x00FC))
 254 +
 255 +/*
 256 + *  Clock Control Register
 257 + */
 258 +#define GPTU_CLC_SMC                   GET_BITS(*LQ_GPTU_CLC, 23, 16)
 259 +#define GPTU_CLC_RMC                   GET_BITS(*LQ_GPTU_CLC, 15, 8)
 260 +#define GPTU_CLC_FSOE                  (*LQ_GPTU_CLC & (1 << 5))
 261 +#define GPTU_CLC_EDIS                  (*LQ_GPTU_CLC & (1 << 3))
 262 +#define GPTU_CLC_SPEN                  (*LQ_GPTU_CLC & (1 << 2))
 263 +#define GPTU_CLC_DISS                  (*LQ_GPTU_CLC & (1 << 1))
 264 +#define GPTU_CLC_DISR                  (*LQ_GPTU_CLC & (1 << 0))
 265 +
 266 +#define GPTU_CLC_SMC_SET(value)                SET_BITS(0, 23, 16, (value))
 267 +#define GPTU_CLC_RMC_SET(value)                SET_BITS(0, 15, 8, (value))
 268 +#define GPTU_CLC_FSOE_SET(value)       ((value) ? (1 << 5) : 0)
 269 +#define GPTU_CLC_SBWE_SET(value)       ((value) ? (1 << 4) : 0)
 270 +#define GPTU_CLC_EDIS_SET(value)       ((value) ? (1 << 3) : 0)
 271 +#define GPTU_CLC_SPEN_SET(value)       ((value) ? (1 << 2) : 0)
 272 +#define GPTU_CLC_DISR_SET(value)       ((value) ? (1 << 0) : 0)
 273 +
 274 +/*
 275 + *  ID Register
 276 + */
 277 +#define GPTU_ID_ID                     GET_BITS(*LQ_GPTU_ID, 15, 8)
 278 +#define GPTU_ID_CFG                    GET_BITS(*LQ_GPTU_ID, 7, 5)
 279 +#define GPTU_ID_REV                    GET_BITS(*LQ_GPTU_ID, 4, 0)
 280 +
 281 +/*
 282 + *  Control Register of Timer/Counter nX
 283 + *    n is the index of block (1 based index)
 284 + *    X is either A or B
 285 + */
 286 +#define GPTU_CON_SRC_EG(n, X)          (*LQ_GPTU_CON(n, X) & (1 << 10))
 287 +#define GPTU_CON_SRC_EXT(n, X)         (*LQ_GPTU_CON(n, X) & (1 << 9))
 288 +#define GPTU_CON_SYNC(n, X)            (*LQ_GPTU_CON(n, X) & (1 << 8))
 289 +#define GPTU_CON_EDGE(n, X)            GET_BITS(*LQ_GPTU_CON(n, X), 7, 6)
 290 +#define GPTU_CON_INV(n, X)             (*LQ_GPTU_CON(n, X) & (1 << 5))
 291 +#define GPTU_CON_EXT(n, X)             (*LQ_GPTU_CON(n, A) & (1 << 4)) /* Timer/Counter B does not have this bit */
 292 +#define GPTU_CON_STP(n, X)             (*LQ_GPTU_CON(n, X) & (1 << 3))
 293 +#define GPTU_CON_CNT(n, X)             (*LQ_GPTU_CON(n, X) & (1 << 2))
 294 +#define GPTU_CON_DIR(n, X)             (*LQ_GPTU_CON(n, X) & (1 << 1))
 295 +#define GPTU_CON_EN(n, X)              (*LQ_GPTU_CON(n, X) & (1 << 0))
 296 +
 297 +#define GPTU_CON_SRC_EG_SET(value)     ((value) ? 0 : (1 << 10))
 298 +#define GPTU_CON_SRC_EXT_SET(value)    ((value) ? (1 << 9) : 0)
 299 +#define GPTU_CON_SYNC_SET(value)       ((value) ? (1 << 8) : 0)
 300 +#define GPTU_CON_EDGE_SET(value)       SET_BITS(0, 7, 6, (value))
 301 +#define GPTU_CON_INV_SET(value)                ((value) ? (1 << 5) : 0)
 302 +#define GPTU_CON_EXT_SET(value)                ((value) ? (1 << 4) : 0)
 303 +#define GPTU_CON_STP_SET(value)                ((value) ? (1 << 3) : 0)
 304 +#define GPTU_CON_CNT_SET(value)                ((value) ? (1 << 2) : 0)
 305 +#define GPTU_CON_DIR_SET(value)                ((value) ? (1 << 1) : 0)
 306 +
 307 +#define GPTU_RUN_RL_SET(value)         ((value) ? (1 << 2) : 0)
 308 +#define GPTU_RUN_CEN_SET(value)                ((value) ? (1 << 1) : 0)
 309 +#define GPTU_RUN_SEN_SET(value)                ((value) ? (1 << 0) : 0)
 310 +
 311 +#define GPTU_IRNEN_TC_SET(n, X, value) ((value) ? (1 << (((n) - 1) * 2 + (X))) : 0)
 312 +#define GPTU_IRNCR_TC_SET(n, X, value) ((value) ? (1 << (((n) - 1) * 2 + (X))) : 0)
 313 +
 314 +#define TIMER_FLAG_MASK_SIZE(x)                (x & 0x0001)
 315 +#define TIMER_FLAG_MASK_TYPE(x)                (x & 0x0002)
 316 +#define TIMER_FLAG_MASK_STOP(x)                (x & 0x0004)
 317 +#define TIMER_FLAG_MASK_DIR(x)         (x & 0x0008)
 318 +#define TIMER_FLAG_NONE_EDGE           0x0000
 319 +#define TIMER_FLAG_MASK_EDGE(x)                (x & 0x0030)
 320 +#define TIMER_FLAG_REAL                        0x0000
 321 +#define TIMER_FLAG_INVERT              0x0040
 322 +#define TIMER_FLAG_MASK_INVERT(x)      (x & 0x0040)
 323 +#define TIMER_FLAG_MASK_TRIGGER(x)     (x & 0x0070)
 324 +#define TIMER_FLAG_MASK_SYNC(x)                (x & 0x0080)
 325 +#define TIMER_FLAG_CALLBACK_IN_HB      0x0200
 326 +#define TIMER_FLAG_MASK_HANDLE(x)      (x & 0x0300)
 327 +#define TIMER_FLAG_MASK_SRC(x)         (x & 0x1000)
 328 +
 329 +struct timer_dev_timer {
 330 +       unsigned int f_irq_on;
 331 +       unsigned int irq;
 332 +       unsigned int flag;
 333 +       unsigned long arg1;
 334 +       unsigned long arg2;
 335 +};
 336 +
 337 +struct timer_dev {
 338 +       struct mutex gptu_mutex;
 339 +       unsigned int number_of_timers;
 340 +       unsigned int occupation;
 341 +       unsigned int f_gptu_on;
 342 +       struct timer_dev_timer timer[MAX_NUM_OF_32BIT_TIMER_BLOCKS * 2];
 343 +};
 344 +
 345 +
 346 +unsigned int ltq_get_fpi_bus_clock(int fpi) {
 347 +       struct clk *clk = clk_get_fpi();
 348 +       return clk_get_rate(clk);
 349 +}
 350 +
 351 +
 352 +static long gptu_ioctl(struct file *, unsigned int, unsigned long);
 353 +static int gptu_open(struct inode *, struct file *);
 354 +static int gptu_release(struct inode *, struct file *);
 355 +
 356 +static struct file_operations gptu_fops = {
 357 +       .owner = THIS_MODULE,
 358 +       .unlocked_ioctl = gptu_ioctl,
 359 +       .open = gptu_open,
 360 +       .release = gptu_release
 361 +};
 362 +
 363 +static struct miscdevice gptu_miscdev = {
 364 +       .minor = MISC_DYNAMIC_MINOR,
 365 +       .name = "gptu",
 366 +       .fops = &gptu_fops,
 367 +};
 368 +
 369 +static struct timer_dev timer_dev;
 370 +
 371 +static irqreturn_t timer_irq_handler(int irq, void *p)
 372 +{
 373 +       unsigned int timer;
 374 +       unsigned int flag;
 375 +       struct timer_dev_timer *dev_timer = (struct timer_dev_timer *)p;
 376 +
 377 +       timer = irq - TIMER_INTERRUPT;
 378 +       if (timer < timer_dev.number_of_timers
 379 +               && dev_timer == &timer_dev.timer[timer]) {
 380 +               /*  Clear interrupt.    */
 381 +               ltq_w32(1 << timer, LQ_GPTU_IRNCR);
 382 +
 383 +               /*  Call user hanler or signal. */
 384 +               flag = dev_timer->flag;
 385 +               if (!(timer & 0x01)
 386 +                       || TIMER_FLAG_MASK_SIZE(flag) == TIMER_FLAG_16BIT) {
 387 +                       /* 16-bit timer or timer A of 32-bit timer  */
 388 +                       switch (TIMER_FLAG_MASK_HANDLE(flag)) {
 389 +                       case TIMER_FLAG_CALLBACK_IN_IRQ:
 390 +                       case TIMER_FLAG_CALLBACK_IN_HB:
 391 +                               if (dev_timer->arg1)
 392 +                                       (*(timer_callback)dev_timer->arg1)(dev_timer->arg2);
 393 +                               break;
 394 +                       case TIMER_FLAG_SIGNAL:
 395 +                               send_sig((int)dev_timer->arg2, (struct task_struct *)dev_timer->arg1, 0);
 396 +                               break;
 397 +                       }
 398 +               }
 399 +       }
 400 +       return IRQ_HANDLED;
 401 +}
 402 +
 403 +static inline void lq_enable_gptu(void)
 404 +{
 405 +       struct clk *clk = clk_get_sys("1e100a00.gptu", NULL);
 406 +       clk_enable(clk);
 407 +
 408 +       //ltq_pmu_enable(PMU_GPT);
 409 +
 410 +       /*  Set divider as 1, disable write protection for SPEN, enable module. */
 411 +       *LQ_GPTU_CLC =
 412 +               GPTU_CLC_SMC_SET(0x00) |
 413 +               GPTU_CLC_RMC_SET(0x01) |
 414 +               GPTU_CLC_FSOE_SET(0) |
 415 +               GPTU_CLC_SBWE_SET(1) |
 416 +               GPTU_CLC_EDIS_SET(0) |
 417 +               GPTU_CLC_SPEN_SET(0) |
 418 +               GPTU_CLC_DISR_SET(0);
 419 +}
 420 +
 421 +static inline void lq_disable_gptu(void)
 422 +{
 423 +       struct clk *clk = clk_get_sys("1e100a00.gptu", NULL);
 424 +       ltq_w32(0x00, LQ_GPTU_IRNEN);
 425 +       ltq_w32(0xfff, LQ_GPTU_IRNCR);
 426 +
 427 +       /*  Set divider as 0, enable write protection for SPEN, disable module. */
 428 +       *LQ_GPTU_CLC =
 429 +               GPTU_CLC_SMC_SET(0x00) |
 430 +               GPTU_CLC_RMC_SET(0x00) |
 431 +               GPTU_CLC_FSOE_SET(0) |
 432 +               GPTU_CLC_SBWE_SET(0) |
 433 +               GPTU_CLC_EDIS_SET(0) |
 434 +               GPTU_CLC_SPEN_SET(0) |
 435 +               GPTU_CLC_DISR_SET(1);
 436 +
 437 +       clk_enable(clk);
 438 +}
 439 +
 440 +int lq_request_timer(unsigned int timer, unsigned int flag,
 441 +       unsigned long value, unsigned long arg1, unsigned long arg2)
 442 +{
 443 +       int ret = 0;
 444 +       unsigned int con_reg, irnen_reg;
 445 +       int n, X;
 446 +
 447 +       if (timer >= FIRST_TIMER + timer_dev.number_of_timers)
 448 +               return -EINVAL;
 449 +
 450 +       printk(KERN_INFO "request_timer(%d, 0x%08X, %lu)...",
 451 +               timer, flag, value);
 452 +
 453 +       if (TIMER_FLAG_MASK_SIZE(flag) == TIMER_FLAG_16BIT)
 454 +               value &= 0xFFFF;
 455 +       else
 456 +               timer &= ~0x01;
 457 +
 458 +       mutex_lock(&timer_dev.gptu_mutex);
 459 +
 460 +       /*
 461 +        *  Allocate timer.
 462 +        */
 463 +       if (timer < FIRST_TIMER) {
 464 +               unsigned int mask;
 465 +               unsigned int shift;
 466 +               /* This takes care of TIMER1B which is the only choice for Voice TAPI system */
 467 +               unsigned int offset = TIMER2A;
 468 +
 469 +               /*
 470 +                *  Pick up a free timer.
 471 +                */
 472 +               if (TIMER_FLAG_MASK_SIZE(flag) == TIMER_FLAG_16BIT) {
 473 +                       mask = 1 << offset;
 474 +                       shift = 1;
 475 +               } else {
 476 +                       mask = 3 << offset;
 477 +                       shift = 2;
 478 +               }
 479 +               for (timer = offset;
 480 +                    timer < offset + timer_dev.number_of_timers;
 481 +                    timer += shift, mask <<= shift)
 482 +                       if (!(timer_dev.occupation & mask)) {
 483 +                               timer_dev.occupation |= mask;
 484 +                               break;
 485 +                       }
 486 +               if (timer >= offset + timer_dev.number_of_timers) {
 487 +                       printk("failed![%d]\n", __LINE__);
 488 +                       mutex_unlock(&timer_dev.gptu_mutex);
 489 +                       return -EINVAL;
 490 +               } else
 491 +                       ret = timer;
 492 +       } else {
 493 +               register unsigned int mask;
 494 +
 495 +               /*
 496 +                *  Check if the requested timer is free.
 497 +                */
 498 +               mask = (TIMER_FLAG_MASK_SIZE(flag) == TIMER_FLAG_16BIT ? 1 : 3) << timer;
 499 +               if ((timer_dev.occupation & mask)) {
 500 +                       printk("failed![%d] mask %#x, timer_dev.occupation %#x\n",
 501 +                               __LINE__, mask, timer_dev.occupation);
 502 +                       mutex_unlock(&timer_dev.gptu_mutex);
 503 +                       return -EBUSY;
 504 +               } else {
 505 +                       timer_dev.occupation |= mask;
 506 +                       ret = 0;
 507 +               }
 508 +       }
 509 +
 510 +       /*
 511 +        *  Prepare control register value.
 512 +        */
 513 +       switch (TIMER_FLAG_MASK_EDGE(flag)) {
 514 +       default:
 515 +       case TIMER_FLAG_NONE_EDGE:
 516 +               con_reg = GPTU_CON_EDGE_SET(0x00);
 517 +               break;
 518 +       case TIMER_FLAG_RISE_EDGE:
 519 +               con_reg = GPTU_CON_EDGE_SET(0x01);
 520 +               break;
 521 +       case TIMER_FLAG_FALL_EDGE:
 522 +               con_reg = GPTU_CON_EDGE_SET(0x02);
 523 +               break;
 524 +       case TIMER_FLAG_ANY_EDGE:
 525 +               con_reg = GPTU_CON_EDGE_SET(0x03);
 526 +               break;
 527 +       }
 528 +       if (TIMER_FLAG_MASK_TYPE(flag) == TIMER_FLAG_TIMER)
 529 +               con_reg |=
 530 +                       TIMER_FLAG_MASK_SRC(flag) ==
 531 +                       TIMER_FLAG_EXT_SRC ? GPTU_CON_SRC_EXT_SET(1) :
 532 +                       GPTU_CON_SRC_EXT_SET(0);
 533 +       else
 534 +               con_reg |=
 535 +                       TIMER_FLAG_MASK_SRC(flag) ==
 536 +                       TIMER_FLAG_EXT_SRC ? GPTU_CON_SRC_EG_SET(1) :
 537 +                       GPTU_CON_SRC_EG_SET(0);
 538 +       con_reg |=
 539 +               TIMER_FLAG_MASK_SYNC(flag) ==
 540 +               TIMER_FLAG_UNSYNC ? GPTU_CON_SYNC_SET(0) :
 541 +               GPTU_CON_SYNC_SET(1);
 542 +       con_reg |=
 543 +               TIMER_FLAG_MASK_INVERT(flag) ==
 544 +               TIMER_FLAG_REAL ? GPTU_CON_INV_SET(0) : GPTU_CON_INV_SET(1);
 545 +       con_reg |=
 546 +               TIMER_FLAG_MASK_SIZE(flag) ==
 547 +               TIMER_FLAG_16BIT ? GPTU_CON_EXT_SET(0) :
 548 +               GPTU_CON_EXT_SET(1);
 549 +       con_reg |=
 550 +               TIMER_FLAG_MASK_STOP(flag) ==
 551 +               TIMER_FLAG_ONCE ? GPTU_CON_STP_SET(1) : GPTU_CON_STP_SET(0);
 552 +       con_reg |=
 553 +               TIMER_FLAG_MASK_TYPE(flag) ==
 554 +               TIMER_FLAG_TIMER ? GPTU_CON_CNT_SET(0) :
 555 +               GPTU_CON_CNT_SET(1);
 556 +       con_reg |=
 557 +               TIMER_FLAG_MASK_DIR(flag) ==
 558 +               TIMER_FLAG_UP ? GPTU_CON_DIR_SET(1) : GPTU_CON_DIR_SET(0);
 559 +
 560 +       /*
 561 +        *  Fill up running data.
 562 +        */
 563 +       timer_dev.timer[timer - FIRST_TIMER].flag = flag;
 564 +       timer_dev.timer[timer - FIRST_TIMER].arg1 = arg1;
 565 +       timer_dev.timer[timer - FIRST_TIMER].arg2 = arg2;
 566 +       if (TIMER_FLAG_MASK_SIZE(flag) != TIMER_FLAG_16BIT)
 567 +               timer_dev.timer[timer - FIRST_TIMER + 1].flag = flag;
 568 +
 569 +       /*
 570 +        *  Enable GPTU module.
 571 +        */
 572 +       if (!timer_dev.f_gptu_on) {
 573 +               lq_enable_gptu();
 574 +               timer_dev.f_gptu_on = 1;
 575 +       }
 576 +
 577 +       /*
 578 +        *  Enable IRQ.
 579 +        */
 580 +       if (TIMER_FLAG_MASK_HANDLE(flag) != TIMER_FLAG_NO_HANDLE) {
 581 +               if (TIMER_FLAG_MASK_HANDLE(flag) == TIMER_FLAG_SIGNAL)
 582 +                       timer_dev.timer[timer - FIRST_TIMER].arg1 =
 583 +                               (unsigned long) find_task_by_vpid((int) arg1);
 584 +
 585 +               irnen_reg = 1 << (timer - FIRST_TIMER);
 586 +
 587 +               if (TIMER_FLAG_MASK_HANDLE(flag) == TIMER_FLAG_SIGNAL
 588 +                   || (TIMER_FLAG_MASK_HANDLE(flag) ==
 589 +                       TIMER_FLAG_CALLBACK_IN_IRQ
 590 +                       && timer_dev.timer[timer - FIRST_TIMER].arg1)) {
 591 +                       enable_irq(timer_dev.timer[timer - FIRST_TIMER].irq);
 592 +                       timer_dev.timer[timer - FIRST_TIMER].f_irq_on = 1;
 593 +               }
 594 +       } else
 595 +               irnen_reg = 0;
 596 +
 597 +       /*
 598 +        *  Write config register, reload value and enable interrupt.
 599 +        */
 600 +       n = timer >> 1;
 601 +       X = timer & 0x01;
 602 +       *LQ_GPTU_CON(n, X) = con_reg;
 603 +       *LQ_GPTU_RELOAD(n, X) = value;
 604 +       /* printk("reload value = %d\n", (u32)value); */
 605 +       *LQ_GPTU_IRNEN |= irnen_reg;
 606 +
 607 +       mutex_unlock(&timer_dev.gptu_mutex);
 608 +       printk("successful!\n");
 609 +       return ret;
 610 +}
 611 +EXPORT_SYMBOL(lq_request_timer);
 612 +
 613 +int lq_free_timer(unsigned int timer)
 614 +{
 615 +       unsigned int flag;
 616 +       unsigned int mask;
 617 +       int n, X;
 618 +
 619 +       if (!timer_dev.f_gptu_on)
 620 +               return -EINVAL;
 621 +
 622 +       if (timer < FIRST_TIMER || timer >= FIRST_TIMER + timer_dev.number_of_timers)
 623 +               return -EINVAL;
 624 +
 625 +       mutex_lock(&timer_dev.gptu_mutex);
 626 +
 627 +       flag = timer_dev.timer[timer - FIRST_TIMER].flag;
 628 +       if (TIMER_FLAG_MASK_SIZE(flag) != TIMER_FLAG_16BIT)
 629 +               timer &= ~0x01;
 630 +
 631 +       mask = (TIMER_FLAG_MASK_SIZE(flag) == TIMER_FLAG_16BIT ? 1 : 3) << timer;
 632 +       if (((timer_dev.occupation & mask) ^ mask)) {
 633 +               mutex_unlock(&timer_dev.gptu_mutex);
 634 +               return -EINVAL;
 635 +       }
 636 +
 637 +       n = timer >> 1;
 638 +       X = timer & 0x01;
 639 +
 640 +       if (GPTU_CON_EN(n, X))
 641 +               *LQ_GPTU_RUN(n, X) = GPTU_RUN_CEN_SET(1);
 642 +
 643 +       *LQ_GPTU_IRNEN &= ~GPTU_IRNEN_TC_SET(n, X, 1);
 644 +       *LQ_GPTU_IRNCR |= GPTU_IRNCR_TC_SET(n, X, 1);
 645 +
 646 +       if (timer_dev.timer[timer - FIRST_TIMER].f_irq_on) {
 647 +               disable_irq(timer_dev.timer[timer - FIRST_TIMER].irq);
 648 +               timer_dev.timer[timer - FIRST_TIMER].f_irq_on = 0;
 649 +       }
 650 +
 651 +       timer_dev.occupation &= ~mask;
 652 +       if (!timer_dev.occupation && timer_dev.f_gptu_on) {
 653 +               lq_disable_gptu();
 654 +               timer_dev.f_gptu_on = 0;
 655 +       }
 656 +
 657 +       mutex_unlock(&timer_dev.gptu_mutex);
 658 +
 659 +       return 0;
 660 +}
 661 +EXPORT_SYMBOL(lq_free_timer);
 662 +
 663 +int lq_start_timer(unsigned int timer, int is_resume)
 664 +{
 665 +       unsigned int flag;
 666 +       unsigned int mask;
 667 +       int n, X;
 668 +
 669 +       if (!timer_dev.f_gptu_on)
 670 +               return -EINVAL;
 671 +
 672 +       if (timer < FIRST_TIMER || timer >= FIRST_TIMER + timer_dev.number_of_timers)
 673 +               return -EINVAL;
 674 +
 675 +       mutex_lock(&timer_dev.gptu_mutex);
 676 +
 677 +       flag = timer_dev.timer[timer - FIRST_TIMER].flag;
 678 +       if (TIMER_FLAG_MASK_SIZE(flag) != TIMER_FLAG_16BIT)
 679 +               timer &= ~0x01;
 680 +
 681 +       mask = (TIMER_FLAG_MASK_SIZE(flag) ==
 682 +       TIMER_FLAG_16BIT ? 1 : 3) << timer;
 683 +       if (((timer_dev.occupation & mask) ^ mask)) {
 684 +               mutex_unlock(&timer_dev.gptu_mutex);
 685 +               return -EINVAL;
 686 +       }
 687 +
 688 +       n = timer >> 1;
 689 +       X = timer & 0x01;
 690 +
 691 +       *LQ_GPTU_RUN(n, X) = GPTU_RUN_RL_SET(!is_resume) | GPTU_RUN_SEN_SET(1);
 692 +
 693 +
 694 +       mutex_unlock(&timer_dev.gptu_mutex);
 695 +
 696 +       return 0;
 697 +}
 698 +EXPORT_SYMBOL(lq_start_timer);
 699 +
 700 +int lq_stop_timer(unsigned int timer)
 701 +{
 702 +       unsigned int flag;
 703 +       unsigned int mask;
 704 +       int n, X;
 705 +
 706 +       if (!timer_dev.f_gptu_on)
 707 +               return -EINVAL;
 708 +
 709 +       if (timer < FIRST_TIMER
 710 +           || timer >= FIRST_TIMER + timer_dev.number_of_timers)
 711 +               return -EINVAL;
 712 +
 713 +       mutex_lock(&timer_dev.gptu_mutex);
 714 +
 715 +       flag = timer_dev.timer[timer - FIRST_TIMER].flag;
 716 +       if (TIMER_FLAG_MASK_SIZE(flag) != TIMER_FLAG_16BIT)
 717 +               timer &= ~0x01;
 718 +
 719 +       mask = (TIMER_FLAG_MASK_SIZE(flag) == TIMER_FLAG_16BIT ? 1 : 3) << timer;
 720 +       if (((timer_dev.occupation & mask) ^ mask)) {
 721 +               mutex_unlock(&timer_dev.gptu_mutex);
 722 +               return -EINVAL;
 723 +       }
 724 +
 725 +       n = timer >> 1;
 726 +       X = timer & 0x01;
 727 +
 728 +       *LQ_GPTU_RUN(n, X) = GPTU_RUN_CEN_SET(1);
 729 +
 730 +       mutex_unlock(&timer_dev.gptu_mutex);
 731 +
 732 +       return 0;
 733 +}
 734 +EXPORT_SYMBOL(lq_stop_timer);
 735 +
 736 +int lq_reset_counter_flags(u32 timer, u32 flags)
 737 +{
 738 +       unsigned int oflag;
 739 +       unsigned int mask, con_reg;
 740 +       int n, X;
 741 +
 742 +       if (!timer_dev.f_gptu_on)
 743 +               return -EINVAL;
 744 +
 745 +       if (timer < FIRST_TIMER || timer >= FIRST_TIMER + timer_dev.number_of_timers)
 746 +               return -EINVAL;
 747 +
 748 +       mutex_lock(&timer_dev.gptu_mutex);
 749 +
 750 +       oflag = timer_dev.timer[timer - FIRST_TIMER].flag;
 751 +       if (TIMER_FLAG_MASK_SIZE(oflag) != TIMER_FLAG_16BIT)
 752 +               timer &= ~0x01;
 753 +
 754 +       mask = (TIMER_FLAG_MASK_SIZE(oflag) == TIMER_FLAG_16BIT ? 1 : 3) << timer;
 755 +       if (((timer_dev.occupation & mask) ^ mask)) {
 756 +               mutex_unlock(&timer_dev.gptu_mutex);
 757 +               return -EINVAL;
 758 +       }
 759 +
 760 +       switch (TIMER_FLAG_MASK_EDGE(flags)) {
 761 +       default:
 762 +       case TIMER_FLAG_NONE_EDGE:
 763 +               con_reg = GPTU_CON_EDGE_SET(0x00);
 764 +               break;
 765 +       case TIMER_FLAG_RISE_EDGE:
 766 +               con_reg = GPTU_CON_EDGE_SET(0x01);
 767 +               break;
 768 +       case TIMER_FLAG_FALL_EDGE:
 769 +               con_reg = GPTU_CON_EDGE_SET(0x02);
 770 +               break;
 771 +       case TIMER_FLAG_ANY_EDGE:
 772 +               con_reg = GPTU_CON_EDGE_SET(0x03);
 773 +               break;
 774 +       }
 775 +       if (TIMER_FLAG_MASK_TYPE(flags) == TIMER_FLAG_TIMER)
 776 +               con_reg |= TIMER_FLAG_MASK_SRC(flags) == TIMER_FLAG_EXT_SRC ? GPTU_CON_SRC_EXT_SET(1) : GPTU_CON_SRC_EXT_SET(0);
 777 +       else
 778 +               con_reg |= TIMER_FLAG_MASK_SRC(flags) == TIMER_FLAG_EXT_SRC ? GPTU_CON_SRC_EG_SET(1) : GPTU_CON_SRC_EG_SET(0);
 779 +       con_reg |= TIMER_FLAG_MASK_SYNC(flags) == TIMER_FLAG_UNSYNC ? GPTU_CON_SYNC_SET(0) : GPTU_CON_SYNC_SET(1);
 780 +       con_reg |= TIMER_FLAG_MASK_INVERT(flags) == TIMER_FLAG_REAL ? GPTU_CON_INV_SET(0) : GPTU_CON_INV_SET(1);
 781 +       con_reg |= TIMER_FLAG_MASK_SIZE(flags) == TIMER_FLAG_16BIT ? GPTU_CON_EXT_SET(0) : GPTU_CON_EXT_SET(1);
 782 +       con_reg |= TIMER_FLAG_MASK_STOP(flags) == TIMER_FLAG_ONCE ? GPTU_CON_STP_SET(1) : GPTU_CON_STP_SET(0);
 783 +       con_reg |= TIMER_FLAG_MASK_TYPE(flags) == TIMER_FLAG_TIMER ? GPTU_CON_CNT_SET(0) : GPTU_CON_CNT_SET(1);
 784 +       con_reg |= TIMER_FLAG_MASK_DIR(flags) == TIMER_FLAG_UP ? GPTU_CON_DIR_SET(1) : GPTU_CON_DIR_SET(0);
 785 +
 786 +       timer_dev.timer[timer - FIRST_TIMER].flag = flags;
 787 +       if (TIMER_FLAG_MASK_SIZE(flags) != TIMER_FLAG_16BIT)
 788 +               timer_dev.timer[timer - FIRST_TIMER + 1].flag = flags;
 789 +
 790 +       n = timer >> 1;
 791 +       X = timer & 0x01;
 792 +
 793 +       *LQ_GPTU_CON(n, X) = con_reg;
 794 +       smp_wmb();
 795 +       mutex_unlock(&timer_dev.gptu_mutex);
 796 +       return 0;
 797 +}
 798 +EXPORT_SYMBOL(lq_reset_counter_flags);
 799 +
 800 +int lq_get_count_value(unsigned int timer, unsigned long *value)
 801 +{
 802 +       unsigned int flag;
 803 +       unsigned int mask;
 804 +       int n, X;
 805 +
 806 +       if (!timer_dev.f_gptu_on)
 807 +               return -EINVAL;
 808 +
 809 +       if (timer < FIRST_TIMER
 810 +           || timer >= FIRST_TIMER + timer_dev.number_of_timers)
 811 +               return -EINVAL;
 812 +
 813 +       mutex_lock(&timer_dev.gptu_mutex);
 814 +
 815 +       flag = timer_dev.timer[timer - FIRST_TIMER].flag;
 816 +       if (TIMER_FLAG_MASK_SIZE(flag) != TIMER_FLAG_16BIT)
 817 +               timer &= ~0x01;
 818 +
 819 +       mask = (TIMER_FLAG_MASK_SIZE(flag) == TIMER_FLAG_16BIT ? 1 : 3) << timer;
 820 +       if (((timer_dev.occupation & mask) ^ mask)) {
 821 +               mutex_unlock(&timer_dev.gptu_mutex);
 822 +               return -EINVAL;
 823 +       }
 824 +
 825 +       n = timer >> 1;
 826 +       X = timer & 0x01;
 827 +
 828 +       *value = *LQ_GPTU_COUNT(n, X);
 829 +
 830 +
 831 +       mutex_unlock(&timer_dev.gptu_mutex);
 832 +
 833 +       return 0;
 834 +}
 835 +EXPORT_SYMBOL(lq_get_count_value);
 836 +
 837 +u32 lq_cal_divider(unsigned long freq)
 838 +{
 839 +       u64 module_freq, fpi = ltq_get_fpi_bus_clock(2);
 840 +       u32 clock_divider = 1;
 841 +       module_freq = fpi * 1000;
 842 +       do_div(module_freq, clock_divider * freq);
 843 +       return module_freq;
 844 +}
 845 +EXPORT_SYMBOL(lq_cal_divider);
 846 +
 847 +int lq_set_timer(unsigned int timer, unsigned int freq, int is_cyclic,
 848 +       int is_ext_src, unsigned int handle_flag, unsigned long arg1,
 849 +       unsigned long arg2)
 850 +{
 851 +       unsigned long divider;
 852 +       unsigned int flag;
 853 +
 854 +       divider = lq_cal_divider(freq);
 855 +       if (divider == 0)
 856 +               return -EINVAL;
 857 +       flag = ((divider & ~0xFFFF) ? TIMER_FLAG_32BIT : TIMER_FLAG_16BIT)
 858 +               | (is_cyclic ? TIMER_FLAG_CYCLIC : TIMER_FLAG_ONCE)
 859 +               | (is_ext_src ? TIMER_FLAG_EXT_SRC : TIMER_FLAG_INT_SRC)
 860 +               | TIMER_FLAG_TIMER | TIMER_FLAG_DOWN
 861 +               | TIMER_FLAG_MASK_HANDLE(handle_flag);
 862 +
 863 +       printk(KERN_INFO "lq_set_timer(%d, %d), divider = %lu\n",
 864 +               timer, freq, divider);
 865 +       return lq_request_timer(timer, flag, divider, arg1, arg2);
 866 +}
 867 +EXPORT_SYMBOL(lq_set_timer);
 868 +
 869 +int lq_set_counter(unsigned int timer, unsigned int flag, u32 reload,
 870 +       unsigned long arg1, unsigned long arg2)
 871 +{
 872 +       printk(KERN_INFO "lq_set_counter(%d, %#x, %d)\n", timer, flag, reload);
 873 +       return lq_request_timer(timer, flag, reload, arg1, arg2);
 874 +}
 875 +EXPORT_SYMBOL(lq_set_counter);
 876 +
 877 +static long gptu_ioctl(struct file *file, unsigned int cmd,
 878 +       unsigned long arg)
 879 +{
 880 +       int ret;
 881 +       struct gptu_ioctl_param param;
 882 +
 883 +       if (!access_ok(VERIFY_READ, arg, sizeof(struct gptu_ioctl_param)))
 884 +               return -EFAULT;
 885 +       copy_from_user(&param, (void *) arg, sizeof(param));
 886 +
 887 +       if ((((cmd == GPTU_REQUEST_TIMER || cmd == GPTU_SET_TIMER
 888 +              || GPTU_SET_COUNTER) && param.timer < 2)
 889 +            || cmd == GPTU_GET_COUNT_VALUE || cmd == GPTU_CALCULATE_DIVIDER)
 890 +           && !access_ok(VERIFY_WRITE, arg,
 891 +                          sizeof(struct gptu_ioctl_param)))
 892 +               return -EFAULT;
 893 +
 894 +       switch (cmd) {
 895 +       case GPTU_REQUEST_TIMER:
 896 +               ret = lq_request_timer(param.timer, param.flag, param.value,
 897 +                                    (unsigned long) param.pid,
 898 +                                    (unsigned long) param.sig);
 899 +               if (ret > 0) {
 900 +                       copy_to_user(&((struct gptu_ioctl_param *) arg)->
 901 +                                     timer, &ret, sizeof(&ret));
 902 +                       ret = 0;
 903 +               }
 904 +               break;
 905 +       case GPTU_FREE_TIMER:
 906 +               ret = lq_free_timer(param.timer);
 907 +               break;
 908 +       case GPTU_START_TIMER:
 909 +               ret = lq_start_timer(param.timer, param.flag);
 910 +               break;
 911 +       case GPTU_STOP_TIMER:
 912 +               ret = lq_stop_timer(param.timer);
 913 +               break;
 914 +       case GPTU_GET_COUNT_VALUE:
 915 +               ret = lq_get_count_value(param.timer, &param.value);
 916 +               if (!ret)
 917 +                       copy_to_user(&((struct gptu_ioctl_param *) arg)->
 918 +                                     value, &param.value,
 919 +                                     sizeof(param.value));
 920 +               break;
 921 +       case GPTU_CALCULATE_DIVIDER:
 922 +               param.value = lq_cal_divider(param.value);
 923 +               if (param.value == 0)
 924 +                       ret = -EINVAL;
 925 +               else {
 926 +                       copy_to_user(&((struct gptu_ioctl_param *) arg)->
 927 +                                     value, &param.value,
 928 +                                     sizeof(param.value));
 929 +                       ret = 0;
 930 +               }
 931 +               break;
 932 +       case GPTU_SET_TIMER:
 933 +               ret = lq_set_timer(param.timer, param.value,
 934 +                                TIMER_FLAG_MASK_STOP(param.flag) !=
 935 +                                TIMER_FLAG_ONCE ? 1 : 0,
 936 +                                TIMER_FLAG_MASK_SRC(param.flag) ==
 937 +                                TIMER_FLAG_EXT_SRC ? 1 : 0,
 938 +                                TIMER_FLAG_MASK_HANDLE(param.flag) ==
 939 +                                TIMER_FLAG_SIGNAL ? TIMER_FLAG_SIGNAL :
 940 +                                TIMER_FLAG_NO_HANDLE,
 941 +                                (unsigned long) param.pid,
 942 +                                (unsigned long) param.sig);
 943 +               if (ret > 0) {
 944 +                       copy_to_user(&((struct gptu_ioctl_param *) arg)->
 945 +                                     timer, &ret, sizeof(&ret));
 946 +                       ret = 0;
 947 +               }
 948 +               break;
 949 +       case GPTU_SET_COUNTER:
 950 +               lq_set_counter(param.timer, param.flag, param.value, 0, 0);
 951 +               if (ret > 0) {
 952 +                       copy_to_user(&((struct gptu_ioctl_param *) arg)->
 953 +                                     timer, &ret, sizeof(&ret));
 954 +                       ret = 0;
 955 +               }
 956 +               break;
 957 +       default:
 958 +               ret = -ENOTTY;
 959 +       }
 960 +
 961 +       return ret;
 962 +}
 963 +
 964 +static int gptu_open(struct inode *inode, struct file *file)
 965 +{
 966 +       return 0;
 967 +}
 968 +
 969 +static int gptu_release(struct inode *inode, struct file *file)
 970 +{
 971 +       return 0;
 972 +}
 973 +
 974 +int __init lq_gptu_init(void)
 975 +{
 976 +       int ret;
 977 +       unsigned int i;
 978 +
 979 +       ltq_w32(0, LQ_GPTU_IRNEN);
 980 +       ltq_w32(0xfff, LQ_GPTU_IRNCR);
 981 +
 982 +       memset(&timer_dev, 0, sizeof(timer_dev));
 983 +       mutex_init(&timer_dev.gptu_mutex);
 984 +
 985 +       lq_enable_gptu();
 986 +       timer_dev.number_of_timers = GPTU_ID_CFG * 2;
 987 +       lq_disable_gptu();
 988 +       if (timer_dev.number_of_timers > MAX_NUM_OF_32BIT_TIMER_BLOCKS * 2)
 989 +               timer_dev.number_of_timers = MAX_NUM_OF_32BIT_TIMER_BLOCKS * 2;
 990 +       printk(KERN_INFO "gptu: totally %d 16-bit timers/counters\n", timer_dev.number_of_timers);
 991 +
 992 +       ret = misc_register(&gptu_miscdev);
 993 +       if (ret) {
 994 +               printk(KERN_ERR "gptu: can't misc_register, get error %d\n", -ret);
 995 +               return ret;
 996 +       } else {
 997 +               printk(KERN_INFO "gptu: misc_register on minor %d\n", gptu_miscdev.minor);
 998 +       }
 999 +
1000 +       for (i = 0; i < timer_dev.number_of_timers; i++) {
1001 +               ret = request_irq(TIMER_INTERRUPT + i, timer_irq_handler, IRQF_TIMER, gptu_miscdev.name, &timer_dev.timer[i]);
1002 +               if (ret) {
1003 +                       for (; i >= 0; i--)
1004 +                               free_irq(TIMER_INTERRUPT + i, &timer_dev.timer[i]);
1005 +                       misc_deregister(&gptu_miscdev);
1006 +                       printk(KERN_ERR "gptu: failed in requesting irq (%d), get error %d\n", i, -ret);
1007 +                       return ret;
1008 +               } else {
1009 +                       timer_dev.timer[i].irq = TIMER_INTERRUPT + i;
1010 +                       disable_irq(timer_dev.timer[i].irq);
1011 +                       printk(KERN_INFO "gptu: succeeded to request irq %d\n", timer_dev.timer[i].irq);
1012 +               }
1013 +       }
1014 +
1015 +       return 0;
1016 +}
1017 +
1018 +void __exit lq_gptu_exit(void)
1019 +{
1020 +       unsigned int i;
1021 +
1022 +       for (i = 0; i < timer_dev.number_of_timers; i++) {
1023 +               if (timer_dev.timer[i].f_irq_on)
1024 +                       disable_irq(timer_dev.timer[i].irq);
1025 +               free_irq(timer_dev.timer[i].irq, &timer_dev.timer[i]);
1026 +       }
1027 +       lq_disable_gptu();
1028 +       misc_deregister(&gptu_miscdev);
1029 +}
1030 +
1031 +module_init(lq_gptu_init);
1032 +module_exit(lq_gptu_exit);
1033 +
1034 +#endif