projects / openwrt / svn-archive / archive.git / blob
? search:


b82214888540d9f591b5d2153ff772cd6026fa6c
[openwrt/svn-archive/archive.git] / target / linux / lantiq / patches-3.9 / 0020-owrt-lantiq-backport-old-timer-code.patch
1 From 077bcf8dea89b92d9ab8868e8234feb263c26a83 Mon Sep 17 00:00:00 2001
2 From: John Crispin <blogic@openwrt.org>
3 Date: Wed, 13 Mar 2013 10:01:49 +0100
4 Subject: [PATCH 20/22] owrt: lantiq: backport old timer code
5
6 ---
7 arch/mips/include/asm/mach-lantiq/lantiq_timer.h | 155 ++++
8 arch/mips/lantiq/xway/Makefile | 2 +-
9 arch/mips/lantiq/xway/timer.c | 845 ++++++++++++++++++++++
10 3 files changed, 1001 insertions(+), 1 deletion(-)
11 create mode 100644 arch/mips/include/asm/mach-lantiq/lantiq_timer.h
12 create mode 100644 arch/mips/lantiq/xway/timer.c
13
14 diff --git a/arch/mips/include/asm/mach-lantiq/lantiq_timer.h b/arch/mips/include/asm/mach-lantiq/lantiq_timer.h
15 new file mode 100644
16 index 0000000..ef564ab
17 --- /dev/null
18 +++ b/arch/mips/include/asm/mach-lantiq/lantiq_timer.h
19 @@ -0,0 +1,155 @@
20 +#ifndef __DANUBE_GPTU_DEV_H__2005_07_26__10_19__
21 +#define __DANUBE_GPTU_DEV_H__2005_07_26__10_19__
22 +
23 +
24 +/******************************************************************************
25 + Copyright (c) 2002, Infineon Technologies. All rights reserved.
26 +
27 + No Warranty
28 + Because the program is licensed free of charge, there is no warranty for
29 + the program, to the extent permitted by applicable law. Except when
30 + otherwise stated in writing the copyright holders and/or other parties
31 + provide the program "as is" without warranty of any kind, either
32 + expressed or implied, including, but not limited to, the implied
33 + warranties of merchantability and fitness for a particular purpose. The
34 + entire risk as to the quality and performance of the program is with
35 + you. should the program prove defective, you assume the cost of all
36 + necessary servicing, repair or correction.
37 +
38 + In no event unless required by applicable law or agreed to in writing
39 + will any copyright holder, or any other party who may modify and/or
40 + redistribute the program as permitted above, be liable to you for
41 + damages, including any general, special, incidental or consequential
42 + damages arising out of the use or inability to use the program
43 + (including but not limited to loss of data or data being rendered
44 + inaccurate or losses sustained by you or third parties or a failure of
45 + the program to operate with any other programs), even if such holder or
46 + other party has been advised of the possibility of such damages.
47 +******************************************************************************/
48 +
49 +
50 +/*
51 + * ####################################
52 + * Definition
53 + * ####################################
54 + */
55 +
56 +/*
57 + * Available Timer/Counter Index
58 + */
59 +#define TIMER(n, X) (n * 2 + (X ? 1 : 0))
60 +#define TIMER_ANY 0x00
61 +#define TIMER1A TIMER(1, 0)
62 +#define TIMER1B TIMER(1, 1)
63 +#define TIMER2A TIMER(2, 0)
64 +#define TIMER2B TIMER(2, 1)
65 +#define TIMER3A TIMER(3, 0)
66 +#define TIMER3B TIMER(3, 1)
67 +
68 +/*
69 + * Flag of Timer/Counter
70 + * These flags specify the way in which timer is configured.
71 + */
72 +/* Bit size of timer/counter. */
73 +#define TIMER_FLAG_16BIT 0x0000
74 +#define TIMER_FLAG_32BIT 0x0001
75 +/* Switch between timer and counter. */
76 +#define TIMER_FLAG_TIMER 0x0000
77 +#define TIMER_FLAG_COUNTER 0x0002
78 +/* Stop or continue when overflowing/underflowing. */
79 +#define TIMER_FLAG_ONCE 0x0000
80 +#define TIMER_FLAG_CYCLIC 0x0004
81 +/* Count up or counter down. */
82 +#define TIMER_FLAG_UP 0x0000
83 +#define TIMER_FLAG_DOWN 0x0008
84 +/* Count on specific level or edge. */
85 +#define TIMER_FLAG_HIGH_LEVEL_SENSITIVE 0x0000
86 +#define TIMER_FLAG_LOW_LEVEL_SENSITIVE 0x0040
87 +#define TIMER_FLAG_RISE_EDGE 0x0010
88 +#define TIMER_FLAG_FALL_EDGE 0x0020
89 +#define TIMER_FLAG_ANY_EDGE 0x0030
90 +/* Signal is syncronous to module clock or not. */
91 +#define TIMER_FLAG_UNSYNC 0x0000
92 +#define TIMER_FLAG_SYNC 0x0080
93 +/* Different interrupt handle type. */
94 +#define TIMER_FLAG_NO_HANDLE 0x0000
95 +#if defined(__KERNEL__)
96 + #define TIMER_FLAG_CALLBACK_IN_IRQ 0x0100
97 +#endif // defined(__KERNEL__)
98 +#define TIMER_FLAG_SIGNAL 0x0300
99 +/* Internal clock source or external clock source */
100 +#define TIMER_FLAG_INT_SRC 0x0000
101 +#define TIMER_FLAG_EXT_SRC 0x1000
102 +
103 +
104 +/*
105 + * ioctl Command
106 + */
107 +#define GPTU_REQUEST_TIMER 0x01 /* General method to setup timer/counter. */
108 +#define GPTU_FREE_TIMER 0x02 /* Free timer/counter. */
109 +#define GPTU_START_TIMER 0x03 /* Start or resume timer/counter. */
110 +#define GPTU_STOP_TIMER 0x04 /* Suspend timer/counter. */
111 +#define GPTU_GET_COUNT_VALUE 0x05 /* Get current count value. */
112 +#define GPTU_CALCULATE_DIVIDER 0x06 /* Calculate timer divider from given freq.*/
113 +#define GPTU_SET_TIMER 0x07 /* Simplified method to setup timer. */
114 +#define GPTU_SET_COUNTER 0x08 /* Simplified method to setup counter. */
115 +
116 +/*
117 + * Data Type Used to Call ioctl
118 + */
119 +struct gptu_ioctl_param {
120 + unsigned int timer; /* In command GPTU_REQUEST_TIMER, GPTU_SET_TIMER, and *
121 + * GPTU_SET_COUNTER, this field is ID of expected *
122 + * timer/counter. If it's zero, a timer/counter would *
123 + * be dynamically allocated and ID would be stored in *
124 + * this field. *
125 + * In command GPTU_GET_COUNT_VALUE, this field is *
126 + * ignored. *
127 + * In other command, this field is ID of timer/counter *
128 + * allocated. */
129 + unsigned int flag; /* In command GPTU_REQUEST_TIMER, GPTU_SET_TIMER, and *
130 + * GPTU_SET_COUNTER, this field contains flags to *
131 + * specify how to configure timer/counter. *
132 + * In command GPTU_START_TIMER, zero indicate start *
133 + * and non-zero indicate resume timer/counter. *
134 + * In other command, this field is ignored. */
135 + unsigned long value; /* In command GPTU_REQUEST_TIMER, this field contains *
136 + * init/reload value. *
137 + * In command GPTU_SET_TIMER, this field contains *
138 + * frequency (0.001Hz) of timer. *
139 + * In command GPTU_GET_COUNT_VALUE, current count *
140 + * value would be stored in this field. *
141 + * In command GPTU_CALCULATE_DIVIDER, this field *
142 + * contains frequency wanted, and after calculation, *
143 + * divider would be stored in this field to overwrite *
144 + * the frequency. *
145 + * In other command, this field is ignored. */
146 + int pid; /* In command GPTU_REQUEST_TIMER and GPTU_SET_TIMER, *
147 + * if signal is required, this field contains process *
148 + * ID to which signal would be sent. *
149 + * In other command, this field is ignored. */
150 + int sig; /* In command GPTU_REQUEST_TIMER and GPTU_SET_TIMER, *
151 + * if signal is required, this field contains signal *
152 + * number which would be sent. *
153 + * In other command, this field is ignored. */
154 +};
155 +
156 +/*
157 + * ####################################
158 + * Data Type
159 + * ####################################
160 + */
161 +typedef void (*timer_callback)(unsigned long arg);
162 +
163 +extern int lq_request_timer(unsigned int, unsigned int, unsigned long, unsigned long, unsigned long);
164 +extern int lq_free_timer(unsigned int);
165 +extern int lq_start_timer(unsigned int, int);
166 +extern int lq_stop_timer(unsigned int);
167 +extern int lq_reset_counter_flags(u32 timer, u32 flags);
168 +extern int lq_get_count_value(unsigned int, unsigned long *);
169 +extern u32 lq_cal_divider(unsigned long);
170 +extern int lq_set_timer(unsigned int, unsigned int, int, int, unsigned int, unsigned long, unsigned long);
171 +extern int lq_set_counter(unsigned int timer, unsigned int flag,
172 + u32 reload, unsigned long arg1, unsigned long arg2);
173 +
174 +#endif /* __DANUBE_GPTU_DEV_H__2005_07_26__10_19__ */
175 diff --git a/arch/mips/lantiq/xway/Makefile b/arch/mips/lantiq/xway/Makefile
176 index 3a01d22..ea8706f 100644
177 --- a/arch/mips/lantiq/xway/Makefile
178 +++ b/arch/mips/lantiq/xway/Makefile
179 @@ -1,4 +1,4 @@
180 -obj-y := prom.o sysctrl.o clk.o reset.o dma.o gptu.o dcdc.o
181 +obj-y := prom.o sysctrl.o clk.o reset.o dma.o timer.o dcdc.o
182
183 obj-y += eth_mac.o vmmc.o
184 obj-$(CONFIG_PCI) += ath_eep.o rt_eep.o pci-ath-fixup.o
185 diff --git a/arch/mips/lantiq/xway/timer.c b/arch/mips/lantiq/xway/timer.c
186 new file mode 100644
187 index 0000000..1c0fdb8
188 --- /dev/null
189 +++ b/arch/mips/lantiq/xway/timer.c
190 @@ -0,0 +1,845 @@
191 +#ifndef CONFIG_SOC_AMAZON_SE
192 +
193 +#include <linux/kernel.h>
194 +#include <linux/module.h>
195 +#include <linux/version.h>
196 +#include <linux/types.h>
197 +#include <linux/fs.h>
198 +#include <linux/miscdevice.h>
199 +#include <linux/init.h>
200 +#include <linux/uaccess.h>
201 +#include <linux/unistd.h>
202 +#include <linux/errno.h>
203 +#include <linux/interrupt.h>
204 +#include <linux/sched.h>
205 +
206 +#include <asm/irq.h>
207 +#include <asm/div64.h>
208 +#include "../clk.h"
209 +
210 +#include <lantiq_soc.h>
211 +#include <lantiq_irq.h>
212 +#include <lantiq_timer.h>
213 +
214 +#define MAX_NUM_OF_32BIT_TIMER_BLOCKS 6
215 +
216 +#ifdef TIMER1A
217 +#define FIRST_TIMER TIMER1A
218 +#else
219 +#define FIRST_TIMER 2
220 +#endif
221 +
222 +/*
223 + * GPTC divider is set or not.
224 + */
225 +#define GPTU_CLC_RMC_IS_SET 0
226 +
227 +/*
228 + * Timer Interrupt (IRQ)
229 + */
230 +/* Must be adjusted when ICU driver is available */
231 +#define TIMER_INTERRUPT (INT_NUM_IM3_IRL0 + 22)
232 +
233 +/*
234 + * Bits Operation
235 + */
236 +#define GET_BITS(x, msb, lsb) \
237 + (((x) & ((1 << ((msb) + 1)) - 1)) >> (lsb))
238 +#define SET_BITS(x, msb, lsb, value) \
239 + (((x) & ~(((1 << ((msb) + 1)) - 1) ^ ((1 << (lsb)) - 1))) | \
240 + (((value) & ((1 << (1 + (msb) - (lsb))) - 1)) << (lsb)))
241 +
242 +/*
243 + * GPTU Register Mapping
244 + */
245 +#define LQ_GPTU (KSEG1 + 0x1E100A00)
246 +#define LQ_GPTU_CLC ((volatile u32 *)(LQ_GPTU + 0x0000))
247 +#define LQ_GPTU_ID ((volatile u32 *)(LQ_GPTU + 0x0008))
248 +#define LQ_GPTU_CON(n, X) ((volatile u32 *)(LQ_GPTU + 0x0010 + ((X) * 4) + ((n) - 1) * 0x0020)) /* X must be either A or B */
249 +#define LQ_GPTU_RUN(n, X) ((volatile u32 *)(LQ_GPTU + 0x0018 + ((X) * 4) + ((n) - 1) * 0x0020)) /* X must be either A or B */
250 +#define LQ_GPTU_RELOAD(n, X) ((volatile u32 *)(LQ_GPTU + 0x0020 + ((X) * 4) + ((n) - 1) * 0x0020)) /* X must be either A or B */
251 +#define LQ_GPTU_COUNT(n, X) ((volatile u32 *)(LQ_GPTU + 0x0028 + ((X) * 4) + ((n) - 1) * 0x0020)) /* X must be either A or B */
252 +#define LQ_GPTU_IRNEN ((volatile u32 *)(LQ_GPTU + 0x00F4))
253 +#define LQ_GPTU_IRNICR ((volatile u32 *)(LQ_GPTU + 0x00F8))
254 +#define LQ_GPTU_IRNCR ((volatile u32 *)(LQ_GPTU + 0x00FC))
255 +
256 +/*
257 + * Clock Control Register
258 + */
259 +#define GPTU_CLC_SMC GET_BITS(*LQ_GPTU_CLC, 23, 16)
260 +#define GPTU_CLC_RMC GET_BITS(*LQ_GPTU_CLC, 15, 8)
261 +#define GPTU_CLC_FSOE (*LQ_GPTU_CLC & (1 << 5))
262 +#define GPTU_CLC_EDIS (*LQ_GPTU_CLC & (1 << 3))
263 +#define GPTU_CLC_SPEN (*LQ_GPTU_CLC & (1 << 2))
264 +#define GPTU_CLC_DISS (*LQ_GPTU_CLC & (1 << 1))
265 +#define GPTU_CLC_DISR (*LQ_GPTU_CLC & (1 << 0))
266 +
267 +#define GPTU_CLC_SMC_SET(value) SET_BITS(0, 23, 16, (value))
268 +#define GPTU_CLC_RMC_SET(value) SET_BITS(0, 15, 8, (value))
269 +#define GPTU_CLC_FSOE_SET(value) ((value) ? (1 << 5) : 0)
270 +#define GPTU_CLC_SBWE_SET(value) ((value) ? (1 << 4) : 0)
271 +#define GPTU_CLC_EDIS_SET(value) ((value) ? (1 << 3) : 0)
272 +#define GPTU_CLC_SPEN_SET(value) ((value) ? (1 << 2) : 0)
273 +#define GPTU_CLC_DISR_SET(value) ((value) ? (1 << 0) : 0)
274 +
275 +/*
276 + * ID Register
277 + */
278 +#define GPTU_ID_ID GET_BITS(*LQ_GPTU_ID, 15, 8)
279 +#define GPTU_ID_CFG GET_BITS(*LQ_GPTU_ID, 7, 5)
280 +#define GPTU_ID_REV GET_BITS(*LQ_GPTU_ID, 4, 0)
281 +
282 +/*
283 + * Control Register of Timer/Counter nX
284 + * n is the index of block (1 based index)
285 + * X is either A or B
286 + */
287 +#define GPTU_CON_SRC_EG(n, X) (*LQ_GPTU_CON(n, X) & (1 << 10))
288 +#define GPTU_CON_SRC_EXT(n, X) (*LQ_GPTU_CON(n, X) & (1 << 9))
289 +#define GPTU_CON_SYNC(n, X) (*LQ_GPTU_CON(n, X) & (1 << 8))
290 +#define GPTU_CON_EDGE(n, X) GET_BITS(*LQ_GPTU_CON(n, X), 7, 6)
291 +#define GPTU_CON_INV(n, X) (*LQ_GPTU_CON(n, X) & (1 << 5))
292 +#define GPTU_CON_EXT(n, X) (*LQ_GPTU_CON(n, A) & (1 << 4)) /* Timer/Counter B does not have this bit */
293 +#define GPTU_CON_STP(n, X) (*LQ_GPTU_CON(n, X) & (1 << 3))
294 +#define GPTU_CON_CNT(n, X) (*LQ_GPTU_CON(n, X) & (1 << 2))
295 +#define GPTU_CON_DIR(n, X) (*LQ_GPTU_CON(n, X) & (1 << 1))
296 +#define GPTU_CON_EN(n, X) (*LQ_GPTU_CON(n, X) & (1 << 0))
297 +
298 +#define GPTU_CON_SRC_EG_SET(value) ((value) ? 0 : (1 << 10))
299 +#define GPTU_CON_SRC_EXT_SET(value) ((value) ? (1 << 9) : 0)
300 +#define GPTU_CON_SYNC_SET(value) ((value) ? (1 << 8) : 0)
301 +#define GPTU_CON_EDGE_SET(value) SET_BITS(0, 7, 6, (value))
302 +#define GPTU_CON_INV_SET(value) ((value) ? (1 << 5) : 0)
303 +#define GPTU_CON_EXT_SET(value) ((value) ? (1 << 4) : 0)
304 +#define GPTU_CON_STP_SET(value) ((value) ? (1 << 3) : 0)
305 +#define GPTU_CON_CNT_SET(value) ((value) ? (1 << 2) : 0)
306 +#define GPTU_CON_DIR_SET(value) ((value) ? (1 << 1) : 0)
307 +
308 +#define GPTU_RUN_RL_SET(value) ((value) ? (1 << 2) : 0)
309 +#define GPTU_RUN_CEN_SET(value) ((value) ? (1 << 1) : 0)
310 +#define GPTU_RUN_SEN_SET(value) ((value) ? (1 << 0) : 0)
311 +
312 +#define GPTU_IRNEN_TC_SET(n, X, value) ((value) ? (1 << (((n) - 1) * 2 + (X))) : 0)
313 +#define GPTU_IRNCR_TC_SET(n, X, value) ((value) ? (1 << (((n) - 1) * 2 + (X))) : 0)
314 +
315 +#define TIMER_FLAG_MASK_SIZE(x) (x & 0x0001)
316 +#define TIMER_FLAG_MASK_TYPE(x) (x & 0x0002)
317 +#define TIMER_FLAG_MASK_STOP(x) (x & 0x0004)
318 +#define TIMER_FLAG_MASK_DIR(x) (x & 0x0008)
319 +#define TIMER_FLAG_NONE_EDGE 0x0000
320 +#define TIMER_FLAG_MASK_EDGE(x) (x & 0x0030)
321 +#define TIMER_FLAG_REAL 0x0000
322 +#define TIMER_FLAG_INVERT 0x0040
323 +#define TIMER_FLAG_MASK_INVERT(x) (x & 0x0040)
324 +#define TIMER_FLAG_MASK_TRIGGER(x) (x & 0x0070)
325 +#define TIMER_FLAG_MASK_SYNC(x) (x & 0x0080)
326 +#define TIMER_FLAG_CALLBACK_IN_HB 0x0200
327 +#define TIMER_FLAG_MASK_HANDLE(x) (x & 0x0300)
328 +#define TIMER_FLAG_MASK_SRC(x) (x & 0x1000)
329 +
330 +struct timer_dev_timer {
331 + unsigned int f_irq_on;
332 + unsigned int irq;
333 + unsigned int flag;
334 + unsigned long arg1;
335 + unsigned long arg2;
336 +};
337 +
338 +struct timer_dev {
339 + struct mutex gptu_mutex;
340 + unsigned int number_of_timers;
341 + unsigned int occupation;
342 + unsigned int f_gptu_on;
343 + struct timer_dev_timer timer[MAX_NUM_OF_32BIT_TIMER_BLOCKS * 2];
344 +};
345 +
346 +
347 +unsigned int ltq_get_fpi_bus_clock(int fpi) {
348 + struct clk *clk = clk_get_fpi();
349 + return clk_get_rate(clk);
350 +}
351 +
352 +
353 +static long gptu_ioctl(struct file *, unsigned int, unsigned long);
354 +static int gptu_open(struct inode *, struct file *);
355 +static int gptu_release(struct inode *, struct file *);
356 +
357 +static struct file_operations gptu_fops = {
358 + .owner = THIS_MODULE,
359 + .unlocked_ioctl = gptu_ioctl,
360 + .open = gptu_open,
361 + .release = gptu_release
362 +};
363 +
364 +static struct miscdevice gptu_miscdev = {
365 + .minor = MISC_DYNAMIC_MINOR,
366 + .name = "gptu",
367 + .fops = &gptu_fops,
368 +};
369 +
370 +static struct timer_dev timer_dev;
371 +
372 +static irqreturn_t timer_irq_handler(int irq, void *p)
373 +{
374 + unsigned int timer;
375 + unsigned int flag;
376 + struct timer_dev_timer *dev_timer = (struct timer_dev_timer *)p;
377 +
378 + timer = irq - TIMER_INTERRUPT;
379 + if (timer < timer_dev.number_of_timers
380 + && dev_timer == &timer_dev.timer[timer]) {
381 + /* Clear interrupt. */
382 + ltq_w32(1 << timer, LQ_GPTU_IRNCR);
383 +
384 + /* Call user hanler or signal. */
385 + flag = dev_timer->flag;
386 + if (!(timer & 0x01)
387 + || TIMER_FLAG_MASK_SIZE(flag) == TIMER_FLAG_16BIT) {
388 + /* 16-bit timer or timer A of 32-bit timer */
389 + switch (TIMER_FLAG_MASK_HANDLE(flag)) {
390 + case TIMER_FLAG_CALLBACK_IN_IRQ:
391 + case TIMER_FLAG_CALLBACK_IN_HB:
392 + if (dev_timer->arg1)
393 + (*(timer_callback)dev_timer->arg1)(dev_timer->arg2);
394 + break;
395 + case TIMER_FLAG_SIGNAL:
396 + send_sig((int)dev_timer->arg2, (struct task_struct *)dev_timer->arg1, 0);
397 + break;
398 + }
399 + }
400 + }
401 + return IRQ_HANDLED;
402 +}
403 +
404 +static inline void lq_enable_gptu(void)
405 +{
406 + struct clk *clk = clk_get_sys("1e100a00.gptu", NULL);
407 + clk_enable(clk);
408 +
409 + //ltq_pmu_enable(PMU_GPT);
410 +
411 + /* Set divider as 1, disable write protection for SPEN, enable module. */
412 + *LQ_GPTU_CLC =
413 + GPTU_CLC_SMC_SET(0x00) |
414 + GPTU_CLC_RMC_SET(0x01) |
415 + GPTU_CLC_FSOE_SET(0) |
416 + GPTU_CLC_SBWE_SET(1) |
417 + GPTU_CLC_EDIS_SET(0) |
418 + GPTU_CLC_SPEN_SET(0) |
419 + GPTU_CLC_DISR_SET(0);
420 +}
421 +
422 +static inline void lq_disable_gptu(void)
423 +{
424 + struct clk *clk = clk_get_sys("1e100a00.gptu", NULL);
425 + ltq_w32(0x00, LQ_GPTU_IRNEN);
426 + ltq_w32(0xfff, LQ_GPTU_IRNCR);
427 +
428 + /* Set divider as 0, enable write protection for SPEN, disable module. */
429 + *LQ_GPTU_CLC =
430 + GPTU_CLC_SMC_SET(0x00) |
431 + GPTU_CLC_RMC_SET(0x00) |
432 + GPTU_CLC_FSOE_SET(0) |
433 + GPTU_CLC_SBWE_SET(0) |
434 + GPTU_CLC_EDIS_SET(0) |
435 + GPTU_CLC_SPEN_SET(0) |
436 + GPTU_CLC_DISR_SET(1);
437 +
438 + clk_enable(clk);
439 +}
440 +
441 +int lq_request_timer(unsigned int timer, unsigned int flag,
442 + unsigned long value, unsigned long arg1, unsigned long arg2)
443 +{
444 + int ret = 0;
445 + unsigned int con_reg, irnen_reg;
446 + int n, X;
447 +
448 + if (timer >= FIRST_TIMER + timer_dev.number_of_timers)
449 + return -EINVAL;
450 +
451 + printk(KERN_INFO "request_timer(%d, 0x%08X, %lu)...",
452 + timer, flag, value);
453 +
454 + if (TIMER_FLAG_MASK_SIZE(flag) == TIMER_FLAG_16BIT)
455 + value &= 0xFFFF;
456 + else
457 + timer &= ~0x01;
458 +
459 + mutex_lock(&timer_dev.gptu_mutex);
460 +
461 + /*
462 + * Allocate timer.
463 + */
464 + if (timer < FIRST_TIMER) {
465 + unsigned int mask;
466 + unsigned int shift;
467 + /* This takes care of TIMER1B which is the only choice for Voice TAPI system */
468 + unsigned int offset = TIMER2A;
469 +
470 + /*
471 + * Pick up a free timer.
472 + */
473 + if (TIMER_FLAG_MASK_SIZE(flag) == TIMER_FLAG_16BIT) {
474 + mask = 1 << offset;
475 + shift = 1;
476 + } else {
477 + mask = 3 << offset;
478 + shift = 2;
479 + }
480 + for (timer = offset;
481 + timer < offset + timer_dev.number_of_timers;
482 + timer += shift, mask <<= shift)
483 + if (!(timer_dev.occupation & mask)) {
484 + timer_dev.occupation |= mask;
485 + break;
486 + }
487 + if (timer >= offset + timer_dev.number_of_timers) {
488 + printk("failed![%d]\n", __LINE__);
489 + mutex_unlock(&timer_dev.gptu_mutex);
490 + return -EINVAL;
491 + } else
492 + ret = timer;
493 + } else {
494 + register unsigned int mask;
495 +
496 + /*
497 + * Check if the requested timer is free.
498 + */
499 + mask = (TIMER_FLAG_MASK_SIZE(flag) == TIMER_FLAG_16BIT ? 1 : 3) << timer;
500 + if ((timer_dev.occupation & mask)) {
501 + printk("failed![%d] mask %#x, timer_dev.occupation %#x\n",
502 + __LINE__, mask, timer_dev.occupation);
503 + mutex_unlock(&timer_dev.gptu_mutex);
504 + return -EBUSY;
505 + } else {
506 + timer_dev.occupation |= mask;
507 + ret = 0;
508 + }
509 + }
510 +
511 + /*
512 + * Prepare control register value.
513 + */
514 + switch (TIMER_FLAG_MASK_EDGE(flag)) {
515 + default:
516 + case TIMER_FLAG_NONE_EDGE:
517 + con_reg = GPTU_CON_EDGE_SET(0x00);
518 + break;
519 + case TIMER_FLAG_RISE_EDGE:
520 + con_reg = GPTU_CON_EDGE_SET(0x01);
521 + break;
522 + case TIMER_FLAG_FALL_EDGE:
523 + con_reg = GPTU_CON_EDGE_SET(0x02);
524 + break;
525 + case TIMER_FLAG_ANY_EDGE:
526 + con_reg = GPTU_CON_EDGE_SET(0x03);
527 + break;
528 + }
529 + if (TIMER_FLAG_MASK_TYPE(flag) == TIMER_FLAG_TIMER)
530 + con_reg |=
531 + TIMER_FLAG_MASK_SRC(flag) ==
532 + TIMER_FLAG_EXT_SRC ? GPTU_CON_SRC_EXT_SET(1) :
533 + GPTU_CON_SRC_EXT_SET(0);
534 + else
535 + con_reg |=
536 + TIMER_FLAG_MASK_SRC(flag) ==
537 + TIMER_FLAG_EXT_SRC ? GPTU_CON_SRC_EG_SET(1) :
538 + GPTU_CON_SRC_EG_SET(0);
539 + con_reg |=
540 + TIMER_FLAG_MASK_SYNC(flag) ==
541 + TIMER_FLAG_UNSYNC ? GPTU_CON_SYNC_SET(0) :
542 + GPTU_CON_SYNC_SET(1);
543 + con_reg |=
544 + TIMER_FLAG_MASK_INVERT(flag) ==
545 + TIMER_FLAG_REAL ? GPTU_CON_INV_SET(0) : GPTU_CON_INV_SET(1);
546 + con_reg |=
547 + TIMER_FLAG_MASK_SIZE(flag) ==
548 + TIMER_FLAG_16BIT ? GPTU_CON_EXT_SET(0) :
549 + GPTU_CON_EXT_SET(1);
550 + con_reg |=
551 + TIMER_FLAG_MASK_STOP(flag) ==
552 + TIMER_FLAG_ONCE ? GPTU_CON_STP_SET(1) : GPTU_CON_STP_SET(0);
553 + con_reg |=
554 + TIMER_FLAG_MASK_TYPE(flag) ==
555 + TIMER_FLAG_TIMER ? GPTU_CON_CNT_SET(0) :
556 + GPTU_CON_CNT_SET(1);
557 + con_reg |=
558 + TIMER_FLAG_MASK_DIR(flag) ==
559 + TIMER_FLAG_UP ? GPTU_CON_DIR_SET(1) : GPTU_CON_DIR_SET(0);
560 +
561 + /*
562 + * Fill up running data.
563 + */
564 + timer_dev.timer[timer - FIRST_TIMER].flag = flag;
565 + timer_dev.timer[timer - FIRST_TIMER].arg1 = arg1;
566 + timer_dev.timer[timer - FIRST_TIMER].arg2 = arg2;
567 + if (TIMER_FLAG_MASK_SIZE(flag) != TIMER_FLAG_16BIT)
568 + timer_dev.timer[timer - FIRST_TIMER + 1].flag = flag;
569 +
570 + /*
571 + * Enable GPTU module.
572 + */
573 + if (!timer_dev.f_gptu_on) {
574 + lq_enable_gptu();
575 + timer_dev.f_gptu_on = 1;
576 + }
577 +
578 + /*
579 + * Enable IRQ.
580 + */
581 + if (TIMER_FLAG_MASK_HANDLE(flag) != TIMER_FLAG_NO_HANDLE) {
582 + if (TIMER_FLAG_MASK_HANDLE(flag) == TIMER_FLAG_SIGNAL)
583 + timer_dev.timer[timer - FIRST_TIMER].arg1 =
584 + (unsigned long) find_task_by_vpid((int) arg1);
585 +
586 + irnen_reg = 1 << (timer - FIRST_TIMER);
587 +
588 + if (TIMER_FLAG_MASK_HANDLE(flag) == TIMER_FLAG_SIGNAL
589 + || (TIMER_FLAG_MASK_HANDLE(flag) ==
590 + TIMER_FLAG_CALLBACK_IN_IRQ
591 + && timer_dev.timer[timer - FIRST_TIMER].arg1)) {
592 + enable_irq(timer_dev.timer[timer - FIRST_TIMER].irq);
593 + timer_dev.timer[timer - FIRST_TIMER].f_irq_on = 1;
594 + }
595 + } else
596 + irnen_reg = 0;
597 +
598 + /*
599 + * Write config register, reload value and enable interrupt.
600 + */
601 + n = timer >> 1;
602 + X = timer & 0x01;
603 + *LQ_GPTU_CON(n, X) = con_reg;
604 + *LQ_GPTU_RELOAD(n, X) = value;
605 + /* printk("reload value = %d\n", (u32)value); */
606 + *LQ_GPTU_IRNEN |= irnen_reg;
607 +
608 + mutex_unlock(&timer_dev.gptu_mutex);
609 + printk("successful!\n");
610 + return ret;
611 +}
612 +EXPORT_SYMBOL(lq_request_timer);
613 +
614 +int lq_free_timer(unsigned int timer)
615 +{
616 + unsigned int flag;
617 + unsigned int mask;
618 + int n, X;
619 +
620 + if (!timer_dev.f_gptu_on)
621 + return -EINVAL;
622 +
623 + if (timer < FIRST_TIMER || timer >= FIRST_TIMER + timer_dev.number_of_timers)
624 + return -EINVAL;
625 +
626 + mutex_lock(&timer_dev.gptu_mutex);
627 +
628 + flag = timer_dev.timer[timer - FIRST_TIMER].flag;
629 + if (TIMER_FLAG_MASK_SIZE(flag) != TIMER_FLAG_16BIT)
630 + timer &= ~0x01;
631 +
632 + mask = (TIMER_FLAG_MASK_SIZE(flag) == TIMER_FLAG_16BIT ? 1 : 3) << timer;
633 + if (((timer_dev.occupation & mask) ^ mask)) {
634 + mutex_unlock(&timer_dev.gptu_mutex);
635 + return -EINVAL;
636 + }
637 +
638 + n = timer >> 1;
639 + X = timer & 0x01;
640 +
641 + if (GPTU_CON_EN(n, X))
642 + *LQ_GPTU_RUN(n, X) = GPTU_RUN_CEN_SET(1);
643 +
644 + *LQ_GPTU_IRNEN &= ~GPTU_IRNEN_TC_SET(n, X, 1);
645 + *LQ_GPTU_IRNCR |= GPTU_IRNCR_TC_SET(n, X, 1);
646 +
647 + if (timer_dev.timer[timer - FIRST_TIMER].f_irq_on) {
648 + disable_irq(timer_dev.timer[timer - FIRST_TIMER].irq);
649 + timer_dev.timer[timer - FIRST_TIMER].f_irq_on = 0;
650 + }
651 +
652 + timer_dev.occupation &= ~mask;
653 + if (!timer_dev.occupation && timer_dev.f_gptu_on) {
654 + lq_disable_gptu();
655 + timer_dev.f_gptu_on = 0;
656 + }
657 +
658 + mutex_unlock(&timer_dev.gptu_mutex);
659 +
660 + return 0;
661 +}
662 +EXPORT_SYMBOL(lq_free_timer);
663 +
664 +int lq_start_timer(unsigned int timer, int is_resume)
665 +{
666 + unsigned int flag;
667 + unsigned int mask;
668 + int n, X;
669 +
670 + if (!timer_dev.f_gptu_on)
671 + return -EINVAL;
672 +
673 + if (timer < FIRST_TIMER || timer >= FIRST_TIMER + timer_dev.number_of_timers)
674 + return -EINVAL;
675 +
676 + mutex_lock(&timer_dev.gptu_mutex);
677 +
678 + flag = timer_dev.timer[timer - FIRST_TIMER].flag;
679 + if (TIMER_FLAG_MASK_SIZE(flag) != TIMER_FLAG_16BIT)
680 + timer &= ~0x01;
681 +
682 + mask = (TIMER_FLAG_MASK_SIZE(flag) ==
683 + TIMER_FLAG_16BIT ? 1 : 3) << timer;
684 + if (((timer_dev.occupation & mask) ^ mask)) {
685 + mutex_unlock(&timer_dev.gptu_mutex);
686 + return -EINVAL;
687 + }
688 +
689 + n = timer >> 1;
690 + X = timer & 0x01;
691 +
692 + *LQ_GPTU_RUN(n, X) = GPTU_RUN_RL_SET(!is_resume) | GPTU_RUN_SEN_SET(1);
693 +
694 +
695 + mutex_unlock(&timer_dev.gptu_mutex);
696 +
697 + return 0;
698 +}
699 +EXPORT_SYMBOL(lq_start_timer);
700 +
701 +int lq_stop_timer(unsigned int timer)
702 +{
703 + unsigned int flag;
704 + unsigned int mask;
705 + int n, X;
706 +
707 + if (!timer_dev.f_gptu_on)
708 + return -EINVAL;
709 +
710 + if (timer < FIRST_TIMER
711 + || timer >= FIRST_TIMER + timer_dev.number_of_timers)
712 + return -EINVAL;
713 +
714 + mutex_lock(&timer_dev.gptu_mutex);
715 +
716 + flag = timer_dev.timer[timer - FIRST_TIMER].flag;
717 + if (TIMER_FLAG_MASK_SIZE(flag) != TIMER_FLAG_16BIT)
718 + timer &= ~0x01;
719 +
720 + mask = (TIMER_FLAG_MASK_SIZE(flag) == TIMER_FLAG_16BIT ? 1 : 3) << timer;
721 + if (((timer_dev.occupation & mask) ^ mask)) {
722 + mutex_unlock(&timer_dev.gptu_mutex);
723 + return -EINVAL;
724 + }
725 +
726 + n = timer >> 1;
727 + X = timer & 0x01;
728 +
729 + *LQ_GPTU_RUN(n, X) = GPTU_RUN_CEN_SET(1);
730 +
731 + mutex_unlock(&timer_dev.gptu_mutex);
732 +
733 + return 0;
734 +}
735 +EXPORT_SYMBOL(lq_stop_timer);
736 +
737 +int lq_reset_counter_flags(u32 timer, u32 flags)
738 +{
739 + unsigned int oflag;
740 + unsigned int mask, con_reg;
741 + int n, X;
742 +
743 + if (!timer_dev.f_gptu_on)
744 + return -EINVAL;
745 +
746 + if (timer < FIRST_TIMER || timer >= FIRST_TIMER + timer_dev.number_of_timers)
747 + return -EINVAL;
748 +
749 + mutex_lock(&timer_dev.gptu_mutex);
750 +
751 + oflag = timer_dev.timer[timer - FIRST_TIMER].flag;
752 + if (TIMER_FLAG_MASK_SIZE(oflag) != TIMER_FLAG_16BIT)
753 + timer &= ~0x01;
754 +
755 + mask = (TIMER_FLAG_MASK_SIZE(oflag) == TIMER_FLAG_16BIT ? 1 : 3) << timer;
756 + if (((timer_dev.occupation & mask) ^ mask)) {
757 + mutex_unlock(&timer_dev.gptu_mutex);
758 + return -EINVAL;
759 + }
760 +
761 + switch (TIMER_FLAG_MASK_EDGE(flags)) {
762 + default:
763 + case TIMER_FLAG_NONE_EDGE:
764 + con_reg = GPTU_CON_EDGE_SET(0x00);
765 + break;
766 + case TIMER_FLAG_RISE_EDGE:
767 + con_reg = GPTU_CON_EDGE_SET(0x01);
768 + break;
769 + case TIMER_FLAG_FALL_EDGE:
770 + con_reg = GPTU_CON_EDGE_SET(0x02);
771 + break;
772 + case TIMER_FLAG_ANY_EDGE:
773 + con_reg = GPTU_CON_EDGE_SET(0x03);
774 + break;
775 + }
776 + if (TIMER_FLAG_MASK_TYPE(flags) == TIMER_FLAG_TIMER)
777 + con_reg |= TIMER_FLAG_MASK_SRC(flags) == TIMER_FLAG_EXT_SRC ? GPTU_CON_SRC_EXT_SET(1) : GPTU_CON_SRC_EXT_SET(0);
778 + else
779 + con_reg |= TIMER_FLAG_MASK_SRC(flags) == TIMER_FLAG_EXT_SRC ? GPTU_CON_SRC_EG_SET(1) : GPTU_CON_SRC_EG_SET(0);
780 + con_reg |= TIMER_FLAG_MASK_SYNC(flags) == TIMER_FLAG_UNSYNC ? GPTU_CON_SYNC_SET(0) : GPTU_CON_SYNC_SET(1);
781 + con_reg |= TIMER_FLAG_MASK_INVERT(flags) == TIMER_FLAG_REAL ? GPTU_CON_INV_SET(0) : GPTU_CON_INV_SET(1);
782 + con_reg |= TIMER_FLAG_MASK_SIZE(flags) == TIMER_FLAG_16BIT ? GPTU_CON_EXT_SET(0) : GPTU_CON_EXT_SET(1);
783 + con_reg |= TIMER_FLAG_MASK_STOP(flags) == TIMER_FLAG_ONCE ? GPTU_CON_STP_SET(1) : GPTU_CON_STP_SET(0);
784 + con_reg |= TIMER_FLAG_MASK_TYPE(flags) == TIMER_FLAG_TIMER ? GPTU_CON_CNT_SET(0) : GPTU_CON_CNT_SET(1);
785 + con_reg |= TIMER_FLAG_MASK_DIR(flags) == TIMER_FLAG_UP ? GPTU_CON_DIR_SET(1) : GPTU_CON_DIR_SET(0);
786 +
787 + timer_dev.timer[timer - FIRST_TIMER].flag = flags;
788 + if (TIMER_FLAG_MASK_SIZE(flags) != TIMER_FLAG_16BIT)
789 + timer_dev.timer[timer - FIRST_TIMER + 1].flag = flags;
790 +
791 + n = timer >> 1;
792 + X = timer & 0x01;
793 +
794 + *LQ_GPTU_CON(n, X) = con_reg;
795 + smp_wmb();
796 + mutex_unlock(&timer_dev.gptu_mutex);
797 + return 0;
798 +}
799 +EXPORT_SYMBOL(lq_reset_counter_flags);
800 +
801 +int lq_get_count_value(unsigned int timer, unsigned long *value)
802 +{
803 + unsigned int flag;
804 + unsigned int mask;
805 + int n, X;
806 +
807 + if (!timer_dev.f_gptu_on)
808 + return -EINVAL;
809 +
810 + if (timer < FIRST_TIMER
811 + || timer >= FIRST_TIMER + timer_dev.number_of_timers)
812 + return -EINVAL;
813 +
814 + mutex_lock(&timer_dev.gptu_mutex);
815 +
816 + flag = timer_dev.timer[timer - FIRST_TIMER].flag;
817 + if (TIMER_FLAG_MASK_SIZE(flag) != TIMER_FLAG_16BIT)
818 + timer &= ~0x01;
819 +
820 + mask = (TIMER_FLAG_MASK_SIZE(flag) == TIMER_FLAG_16BIT ? 1 : 3) << timer;
821 + if (((timer_dev.occupation & mask) ^ mask)) {
822 + mutex_unlock(&timer_dev.gptu_mutex);
823 + return -EINVAL;
824 + }
825 +
826 + n = timer >> 1;
827 + X = timer & 0x01;
828 +
829 + *value = *LQ_GPTU_COUNT(n, X);
830 +
831 +
832 + mutex_unlock(&timer_dev.gptu_mutex);
833 +
834 + return 0;
835 +}
836 +EXPORT_SYMBOL(lq_get_count_value);
837 +
838 +u32 lq_cal_divider(unsigned long freq)
839 +{
840 + u64 module_freq, fpi = ltq_get_fpi_bus_clock(2);
841 + u32 clock_divider = 1;
842 + module_freq = fpi * 1000;
843 + do_div(module_freq, clock_divider * freq);
844 + return module_freq;
845 +}
846 +EXPORT_SYMBOL(lq_cal_divider);
847 +
848 +int lq_set_timer(unsigned int timer, unsigned int freq, int is_cyclic,
849 + int is_ext_src, unsigned int handle_flag, unsigned long arg1,
850 + unsigned long arg2)
851 +{
852 + unsigned long divider;
853 + unsigned int flag;
854 +
855 + divider = lq_cal_divider(freq);
856 + if (divider == 0)
857 + return -EINVAL;
858 + flag = ((divider & ~0xFFFF) ? TIMER_FLAG_32BIT : TIMER_FLAG_16BIT)
859 + | (is_cyclic ? TIMER_FLAG_CYCLIC : TIMER_FLAG_ONCE)
860 + | (is_ext_src ? TIMER_FLAG_EXT_SRC : TIMER_FLAG_INT_SRC)
861 + | TIMER_FLAG_TIMER | TIMER_FLAG_DOWN
862 + | TIMER_FLAG_MASK_HANDLE(handle_flag);
863 +
864 + printk(KERN_INFO "lq_set_timer(%d, %d), divider = %lu\n",
865 + timer, freq, divider);
866 + return lq_request_timer(timer, flag, divider, arg1, arg2);
867 +}
868 +EXPORT_SYMBOL(lq_set_timer);
869 +
870 +int lq_set_counter(unsigned int timer, unsigned int flag, u32 reload,
871 + unsigned long arg1, unsigned long arg2)
872 +{
873 + printk(KERN_INFO "lq_set_counter(%d, %#x, %d)\n", timer, flag, reload);
874 + return lq_request_timer(timer, flag, reload, arg1, arg2);
875 +}
876 +EXPORT_SYMBOL(lq_set_counter);
877 +
878 +static long gptu_ioctl(struct file *file, unsigned int cmd,
879 + unsigned long arg)
880 +{
881 + int ret;
882 + struct gptu_ioctl_param param;
883 +
884 + if (!access_ok(VERIFY_READ, arg, sizeof(struct gptu_ioctl_param)))
885 + return -EFAULT;
886 + copy_from_user(&param, (void *) arg, sizeof(param));
887 +
888 + if ((((cmd == GPTU_REQUEST_TIMER || cmd == GPTU_SET_TIMER
889 + || GPTU_SET_COUNTER) && param.timer < 2)
890 + || cmd == GPTU_GET_COUNT_VALUE || cmd == GPTU_CALCULATE_DIVIDER)
891 + && !access_ok(VERIFY_WRITE, arg,
892 + sizeof(struct gptu_ioctl_param)))
893 + return -EFAULT;
894 +
895 + switch (cmd) {
896 + case GPTU_REQUEST_TIMER:
897 + ret = lq_request_timer(param.timer, param.flag, param.value,
898 + (unsigned long) param.pid,
899 + (unsigned long) param.sig);
900 + if (ret > 0) {
901 + copy_to_user(&((struct gptu_ioctl_param *) arg)->
902 + timer, &ret, sizeof(&ret));
903 + ret = 0;
904 + }
905 + break;
906 + case GPTU_FREE_TIMER:
907 + ret = lq_free_timer(param.timer);
908 + break;
909 + case GPTU_START_TIMER:
910 + ret = lq_start_timer(param.timer, param.flag);
911 + break;
912 + case GPTU_STOP_TIMER:
913 + ret = lq_stop_timer(param.timer);
914 + break;
915 + case GPTU_GET_COUNT_VALUE:
916 + ret = lq_get_count_value(param.timer, &param.value);
917 + if (!ret)
918 + copy_to_user(&((struct gptu_ioctl_param *) arg)->
919 + value, &param.value,
920 + sizeof(param.value));
921 + break;
922 + case GPTU_CALCULATE_DIVIDER:
923 + param.value = lq_cal_divider(param.value);
924 + if (param.value == 0)
925 + ret = -EINVAL;
926 + else {
927 + copy_to_user(&((struct gptu_ioctl_param *) arg)->
928 + value, &param.value,
929 + sizeof(param.value));
930 + ret = 0;
931 + }
932 + break;
933 + case GPTU_SET_TIMER:
934 + ret = lq_set_timer(param.timer, param.value,
935 + TIMER_FLAG_MASK_STOP(param.flag) !=
936 + TIMER_FLAG_ONCE ? 1 : 0,
937 + TIMER_FLAG_MASK_SRC(param.flag) ==
938 + TIMER_FLAG_EXT_SRC ? 1 : 0,
939 + TIMER_FLAG_MASK_HANDLE(param.flag) ==
940 + TIMER_FLAG_SIGNAL ? TIMER_FLAG_SIGNAL :
941 + TIMER_FLAG_NO_HANDLE,
942 + (unsigned long) param.pid,
943 + (unsigned long) param.sig);
944 + if (ret > 0) {
945 + copy_to_user(&((struct gptu_ioctl_param *) arg)->
946 + timer, &ret, sizeof(&ret));
947 + ret = 0;
948 + }
949 + break;
950 + case GPTU_SET_COUNTER:
951 + lq_set_counter(param.timer, param.flag, param.value, 0, 0);
952 + if (ret > 0) {
953 + copy_to_user(&((struct gptu_ioctl_param *) arg)->
954 + timer, &ret, sizeof(&ret));
955 + ret = 0;
956 + }
957 + break;
958 + default:
959 + ret = -ENOTTY;
960 + }
961 +
962 + return ret;
963 +}
964 +
965 +static int gptu_open(struct inode *inode, struct file *file)
966 +{
967 + return 0;
968 +}
969 +
970 +static int gptu_release(struct inode *inode, struct file *file)
971 +{
972 + return 0;
973 +}
974 +
975 +int __init lq_gptu_init(void)
976 +{
977 + int ret;
978 + unsigned int i;
979 +
980 + ltq_w32(0, LQ_GPTU_IRNEN);
981 + ltq_w32(0xfff, LQ_GPTU_IRNCR);
982 +
983 + memset(&timer_dev, 0, sizeof(timer_dev));
984 + mutex_init(&timer_dev.gptu_mutex);
985 +
986 + lq_enable_gptu();
987 + timer_dev.number_of_timers = GPTU_ID_CFG * 2;
988 + lq_disable_gptu();
989 + if (timer_dev.number_of_timers > MAX_NUM_OF_32BIT_TIMER_BLOCKS * 2)
990 + timer_dev.number_of_timers = MAX_NUM_OF_32BIT_TIMER_BLOCKS * 2;
991 + printk(KERN_INFO "gptu: totally %d 16-bit timers/counters\n", timer_dev.number_of_timers);
992 +
993 + ret = misc_register(&gptu_miscdev);
994 + if (ret) {
995 + printk(KERN_ERR "gptu: can't misc_register, get error %d\n", -ret);
996 + return ret;
997 + } else {
998 + printk(KERN_INFO "gptu: misc_register on minor %d\n", gptu_miscdev.minor);
999 + }
1000 +
1001 + for (i = 0; i < timer_dev.number_of_timers; i++) {
1002 + ret = request_irq(TIMER_INTERRUPT + i, timer_irq_handler, IRQF_TIMER, gptu_miscdev.name, &timer_dev.timer[i]);
1003 + if (ret) {
1004 + for (; i >= 0; i--)
1005 + free_irq(TIMER_INTERRUPT + i, &timer_dev.timer[i]);
1006 + misc_deregister(&gptu_miscdev);
1007 + printk(KERN_ERR "gptu: failed in requesting irq (%d), get error %d\n", i, -ret);
1008 + return ret;
1009 + } else {
1010 + timer_dev.timer[i].irq = TIMER_INTERRUPT + i;
1011 + disable_irq(timer_dev.timer[i].irq);
1012 + printk(KERN_INFO "gptu: succeeded to request irq %d\n", timer_dev.timer[i].irq);
1013 + }
1014 + }
1015 +
1016 + return 0;
1017 +}
1018 +
1019 +void __exit lq_gptu_exit(void)
1020 +{
1021 + unsigned int i;
1022 +
1023 + for (i = 0; i < timer_dev.number_of_timers; i++) {
1024 + if (timer_dev.timer[i].f_irq_on)
1025 + disable_irq(timer_dev.timer[i].irq);
1026 + free_irq(timer_dev.timer[i].irq, &timer_dev.timer[i]);
1027 + }
1028 + lq_disable_gptu();
1029 + misc_deregister(&gptu_miscdev);
1030 +}
1031 +
1032 +module_init(lq_gptu_init);
1033 +module_exit(lq_gptu_exit);
1034 +
1035 +#endif
1036 --
1037 1.7.10.4
1038
OpenWrt SVN history