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[openwrt/staging/wigyori.git] / target / linux / lantiq / patches-5.4 / 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 @@ -1,3 +1,9 @@
176 -obj-y := prom.o sysctrl.o clk.o dma.o gptu.o dcdc.o
177 +obj-y := prom.o sysctrl.o clk.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 --- /dev/null
187 +++ b/arch/mips/lantiq/xway/timer.c
188 @@ -0,0 +1,846 @@
189 +#ifndef CONFIG_SOC_AMAZON_SE
190 +
191 +#include <linux/kernel.h>
192 +#include <linux/module.h>
193 +#include <linux/version.h>
194 +#include <linux/types.h>
195 +#include <linux/fs.h>
196 +#include <linux/miscdevice.h>
197 +#include <linux/init.h>
198 +#include <linux/uaccess.h>
199 +#include <linux/unistd.h>
200 +#include <linux/errno.h>
201 +#include <linux/interrupt.h>
202 +#include <linux/sched.h>
203 +#include <linux/sched/signal.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, (void __user *)arg, sizeof(struct gptu_ioctl_param)))
884 + return -EFAULT;
885 + copy_from_user(&param, (void __user *)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, (void __user *)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
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