lantiq: Add support for linux 4.4

The following patches were dropped because they are already applied
upstream:
- 0038-MIPS-lantiq-fpi-on-ar9.patch
- 0039-MIPS-lantiq-initialize-usb-on-boot.patch
- 0042-USB-DWC2-big-endian-support.patch
- 0043-gpio-stp-xway-fix-phy-mask.patch

All other patches were simply refreshed, except the following:
- 0001-MIPS-lantiq-add-pcie-driver.patch
  Changes to arch/mips/lantiq/xway/sysctrl.c (these changes disabled
  some PMU gates for the vrx200 / VR9 SoCs) were removed since the
  upstream kernel disables unused PMU gates automatically (since
  95135bfa7ead1becc2879230f72583dde2b71a0c
  "MIPS: Lantiq: Deactivate most of the devices by default").
- 0025-NET-MIPS-lantiq-adds-xrx200-net.patch
  Since OpenWrt commit 55ba20afcc2fe785146316e5be2c2473cb329885 drivers
  should use of_get_mac_address(). of_get_mac_address_mtd is not
  available for drivers anymore since it's called automatically within
  of_get_mac_address().
- 0028-NET-lantiq-various-etop-fixes.patch
  Same changes as in 0025-NET-MIPS-lantiq-adds-xrx200-net.patch

While refreshing the kernel configuration SPI support had to be moved to
config-4.4 because otherwise M25P80 was disabled.

Signed-off-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com>

SVN-Revision: 48307

1 files changed, 1028 insertions, 0 deletions

diff --git a/target/linux/lantiq/patches-4.4/0008-MIPS-lantiq-backport-old-timer-code.patch b/target/linux/lantiq/patches-4.4/0008-MIPS-lantiq-backport-old-timer-code.patch
new file mode 100644
index 0000000000..55255037fa
--- /dev/null
+++ b/target/linux/lantiq/patches-4.4/0008-MIPS-lantiq-backport-old-timer-code.patch
@@ -0,0 +1,1028 @@
+From 94800350cb8d2f29dda2206b5e9a3772024ee168 Mon Sep 17 00:00:00 2001
+From: John Crispin <blogic@openwrt.org>
+Date: Thu, 7 Aug 2014 18:30:56 +0200
+Subject: [PATCH 08/36] MIPS: lantiq: backport old timer code
+
+Signed-off-by: John Crispin <blogic@openwrt.org>
+---
+ arch/mips/include/asm/mach-lantiq/lantiq_timer.h |  155 ++++
+ arch/mips/lantiq/xway/Makefile                   |    2 +-
+ arch/mips/lantiq/xway/timer.c                    |  845 ++++++++++++++++++++++
+ 3 files changed, 1001 insertions(+), 1 deletion(-)
+ create mode 100644 arch/mips/include/asm/mach-lantiq/lantiq_timer.h
+ create mode 100644 arch/mips/lantiq/xway/timer.c
+
+--- /dev/null
++++ b/arch/mips/include/asm/mach-lantiq/lantiq_timer.h
+@@ -0,0 +1,155 @@
++#ifndef __DANUBE_GPTU_DEV_H__2005_07_26__10_19__
++#define __DANUBE_GPTU_DEV_H__2005_07_26__10_19__
++
++
++/******************************************************************************
++       Copyright (c) 2002, Infineon Technologies.  All rights reserved.
++
++                               No Warranty
++   Because the program is licensed free of charge, there is no warranty for
++   the program, to the extent permitted by applicable law.  Except when
++   otherwise stated in writing the copyright holders and/or other parties
++   provide the program "as is" without warranty of any kind, either
++   expressed or implied, including, but not limited to, the implied
++   warranties of merchantability and fitness for a particular purpose. The
++   entire risk as to the quality and performance of the program is with
++   you.  should the program prove defective, you assume the cost of all
++   necessary servicing, repair or correction.
++
++   In no event unless required by applicable law or agreed to in writing
++   will any copyright holder, or any other party who may modify and/or
++   redistribute the program as permitted above, be liable to you for
++   damages, including any general, special, incidental or consequential
++   damages arising out of the use or inability to use the program
++   (including but not limited to loss of data or data being rendered
++   inaccurate or losses sustained by you or third parties or a failure of
++   the program to operate with any other programs), even if such holder or
++   other party has been advised of the possibility of such damages.
++******************************************************************************/
++
++
++/*
++ * ####################################
++ *              Definition
++ * ####################################
++ */
++
++/*
++ *  Available Timer/Counter Index
++ */
++#define TIMER(n, X)                     (n * 2 + (X ? 1 : 0))
++#define TIMER_ANY                       0x00
++#define TIMER1A                         TIMER(1, 0)
++#define TIMER1B                         TIMER(1, 1)
++#define TIMER2A                         TIMER(2, 0)
++#define TIMER2B                         TIMER(2, 1)
++#define TIMER3A                         TIMER(3, 0)
++#define TIMER3B                         TIMER(3, 1)
++
++/*
++ *  Flag of Timer/Counter
++ *  These flags specify the way in which timer is configured.
++ */
++/*  Bit size of timer/counter.                      */
++#define TIMER_FLAG_16BIT                0x0000
++#define TIMER_FLAG_32BIT                0x0001
++/*  Switch between timer and counter.               */
++#define TIMER_FLAG_TIMER                0x0000
++#define TIMER_FLAG_COUNTER              0x0002
++/*  Stop or continue when overflowing/underflowing. */
++#define TIMER_FLAG_ONCE                 0x0000
++#define TIMER_FLAG_CYCLIC               0x0004
++/*  Count up or counter down.                       */
++#define TIMER_FLAG_UP                   0x0000
++#define TIMER_FLAG_DOWN                 0x0008
++/*  Count on specific level or edge.                */
++#define TIMER_FLAG_HIGH_LEVEL_SENSITIVE 0x0000
++#define TIMER_FLAG_LOW_LEVEL_SENSITIVE  0x0040
++#define TIMER_FLAG_RISE_EDGE            0x0010
++#define TIMER_FLAG_FALL_EDGE            0x0020
++#define TIMER_FLAG_ANY_EDGE             0x0030
++/*  Signal is syncronous to module clock or not.    */
++#define TIMER_FLAG_UNSYNC               0x0000
++#define TIMER_FLAG_SYNC                 0x0080
++/*  Different interrupt handle type.                */
++#define TIMER_FLAG_NO_HANDLE            0x0000
++#if defined(__KERNEL__)
++    #define TIMER_FLAG_CALLBACK_IN_IRQ  0x0100
++#endif  //  defined(__KERNEL__)
++#define TIMER_FLAG_SIGNAL               0x0300
++/*  Internal clock source or external clock source  */
++#define TIMER_FLAG_INT_SRC              0x0000
++#define TIMER_FLAG_EXT_SRC              0x1000
++
++
++/*
++ *  ioctl Command
++ */
++#define GPTU_REQUEST_TIMER              0x01    /*  General method to setup timer/counter.  */
++#define GPTU_FREE_TIMER                 0x02    /*  Free timer/counter.                     */
++#define GPTU_START_TIMER                0x03    /*  Start or resume timer/counter.          */
++#define GPTU_STOP_TIMER                 0x04    /*  Suspend timer/counter.                  */
++#define GPTU_GET_COUNT_VALUE            0x05    /*  Get current count value.                */
++#define GPTU_CALCULATE_DIVIDER          0x06    /*  Calculate timer divider from given freq.*/
++#define GPTU_SET_TIMER                  0x07    /*  Simplified method to setup timer.       */
++#define GPTU_SET_COUNTER                0x08    /*  Simplified method to setup counter.     */
++
++/*
++ *  Data Type Used to Call ioctl
++ */
++struct gptu_ioctl_param {
++    unsigned int                        timer;  /*  In command GPTU_REQUEST_TIMER, GPTU_SET_TIMER, and  *
++                                                 *  GPTU_SET_COUNTER, this field is ID of expected      *
++                                                 *  timer/counter. If it's zero, a timer/counter would  *
++                                                 *  be dynamically allocated and ID would be stored in  *
++                                                 *  this field.                                         *
++                                                 *  In command GPTU_GET_COUNT_VALUE, this field is      *
++                                                 *  ignored.                                            *
++                                                 *  In other command, this field is ID of timer/counter *
++                                                 *  allocated.                                          */
++    unsigned int                        flag;   /*  In command GPTU_REQUEST_TIMER, GPTU_SET_TIMER, and  *
++                                                 *  GPTU_SET_COUNTER, this field contains flags to      *
++                                                 *  specify how to configure timer/counter.             *
++                                                 *  In command GPTU_START_TIMER, zero indicate start    *
++                                                 *  and non-zero indicate resume timer/counter.         *
++                                                 *  In other command, this field is ignored.            */
++    unsigned long                       value;  /*  In command GPTU_REQUEST_TIMER, this field contains  *
++                                                 *  init/reload value.                                  *
++                                                 *  In command GPTU_SET_TIMER, this field contains      *
++                                                 *  frequency (0.001Hz) of timer.                       *
++                                                 *  In command GPTU_GET_COUNT_VALUE, current count      *
++                                                 *  value would be stored in this field.                *
++                                                 *  In command GPTU_CALCULATE_DIVIDER, this field       *
++                                                 *  contains frequency wanted, and after calculation,   *
++                                                 *  divider would be stored in this field to overwrite  *
++                                                 *  the frequency.                                      *
++                                                 *  In other command, this field is ignored.            */
++    int                                 pid;    /*  In command GPTU_REQUEST_TIMER and GPTU_SET_TIMER,   *
++                                                 *  if signal is required, this field contains process  *
++                                                 *  ID to which signal would be sent.                   *
++                                                 *  In other command, this field is ignored.            */
++    int                                 sig;    /*  In command GPTU_REQUEST_TIMER and GPTU_SET_TIMER,   *
++                                                 *  if signal is required, this field contains signal   *
++                                                 *  number which would be sent.                         *
++                                                 *  In other command, this field is ignored.            */
++};
++
++/*
++ * ####################################
++ *              Data Type
++ * ####################################
++ */
++typedef void (*timer_callback)(unsigned long arg);
++
++extern int lq_request_timer(unsigned int, unsigned int, unsigned long, unsigned long, unsigned long);
++extern int lq_free_timer(unsigned int);
++extern int lq_start_timer(unsigned int, int);
++extern int lq_stop_timer(unsigned int);
++extern int lq_reset_counter_flags(u32 timer, u32 flags);
++extern int lq_get_count_value(unsigned int, unsigned long *);
++extern u32 lq_cal_divider(unsigned long);
++extern int lq_set_timer(unsigned int, unsigned int, int, int, unsigned int, unsigned long, unsigned long);
++extern int lq_set_counter(unsigned int timer, unsigned int flag,
++	u32 reload, unsigned long arg1, unsigned long arg2);
++
++#endif /* __DANUBE_GPTU_DEV_H__2005_07_26__10_19__ */
+--- a/arch/mips/lantiq/xway/Makefile
++++ b/arch/mips/lantiq/xway/Makefile
+@@ -1,4 +1,4 @@
+-obj-y := prom.o sysctrl.o clk.o reset.o dma.o gptu.o dcdc.o
++obj-y := prom.o sysctrl.o clk.o reset.o dma.o timer.o dcdc.o
+ 
+ obj-y += vmmc.o tffs.o
+ 
+--- /dev/null
++++ b/arch/mips/lantiq/xway/timer.c
+@@ -0,0 +1,845 @@
++#ifndef CONFIG_SOC_AMAZON_SE
++
++#include <linux/kernel.h>
++#include <linux/module.h>
++#include <linux/version.h>
++#include <linux/types.h>
++#include <linux/fs.h>
++#include <linux/miscdevice.h>
++#include <linux/init.h>
++#include <linux/uaccess.h>
++#include <linux/unistd.h>
++#include <linux/errno.h>
++#include <linux/interrupt.h>
++#include <linux/sched.h>
++
++#include <asm/irq.h>
++#include <asm/div64.h>
++#include "../clk.h"
++
++#include <lantiq_soc.h>
++#include <lantiq_irq.h>
++#include <lantiq_timer.h>
++
++#define MAX_NUM_OF_32BIT_TIMER_BLOCKS	6
++
++#ifdef TIMER1A
++#define FIRST_TIMER			TIMER1A
++#else
++#define FIRST_TIMER			2
++#endif
++
++/*
++ *  GPTC divider is set or not.
++ */
++#define GPTU_CLC_RMC_IS_SET		0
++
++/*
++ *  Timer Interrupt (IRQ)
++ */
++/*  Must be adjusted when ICU driver is available */
++#define TIMER_INTERRUPT			(INT_NUM_IM3_IRL0 + 22)
++
++/*
++ *  Bits Operation
++ */
++#define GET_BITS(x, msb, lsb)		\
++	(((x) & ((1 << ((msb) + 1)) - 1)) >> (lsb))
++#define SET_BITS(x, msb, lsb, value)	\
++	(((x) & ~(((1 << ((msb) + 1)) - 1) ^ ((1 << (lsb)) - 1))) | \
++	(((value) & ((1 << (1 + (msb) - (lsb))) - 1)) << (lsb)))
++
++/*
++ *  GPTU Register Mapping
++ */
++#define LQ_GPTU			(KSEG1 + 0x1E100A00)
++#define LQ_GPTU_CLC		((volatile u32 *)(LQ_GPTU + 0x0000))
++#define LQ_GPTU_ID			((volatile u32 *)(LQ_GPTU + 0x0008))
++#define LQ_GPTU_CON(n, X)		((volatile u32 *)(LQ_GPTU + 0x0010 + ((X) * 4) + ((n) - 1) * 0x0020))	/* X must be either A or B */
++#define LQ_GPTU_RUN(n, X)		((volatile u32 *)(LQ_GPTU + 0x0018 + ((X) * 4) + ((n) - 1) * 0x0020))	/* X must be either A or B */
++#define LQ_GPTU_RELOAD(n, X)	((volatile u32 *)(LQ_GPTU + 0x0020 + ((X) * 4) + ((n) - 1) * 0x0020))	/* X must be either A or B */
++#define LQ_GPTU_COUNT(n, X)	((volatile u32 *)(LQ_GPTU + 0x0028 + ((X) * 4) + ((n) - 1) * 0x0020))	/* X must be either A or B */
++#define LQ_GPTU_IRNEN		((volatile u32 *)(LQ_GPTU + 0x00F4))
++#define LQ_GPTU_IRNICR		((volatile u32 *)(LQ_GPTU + 0x00F8))
++#define LQ_GPTU_IRNCR		((volatile u32 *)(LQ_GPTU + 0x00FC))
++
++/*
++ *  Clock Control Register
++ */
++#define GPTU_CLC_SMC			GET_BITS(*LQ_GPTU_CLC, 23, 16)
++#define GPTU_CLC_RMC			GET_BITS(*LQ_GPTU_CLC, 15, 8)
++#define GPTU_CLC_FSOE			(*LQ_GPTU_CLC & (1 << 5))
++#define GPTU_CLC_EDIS			(*LQ_GPTU_CLC & (1 << 3))
++#define GPTU_CLC_SPEN			(*LQ_GPTU_CLC & (1 << 2))
++#define GPTU_CLC_DISS			(*LQ_GPTU_CLC & (1 << 1))
++#define GPTU_CLC_DISR			(*LQ_GPTU_CLC & (1 << 0))
++
++#define GPTU_CLC_SMC_SET(value)		SET_BITS(0, 23, 16, (value))
++#define GPTU_CLC_RMC_SET(value)		SET_BITS(0, 15, 8, (value))
++#define GPTU_CLC_FSOE_SET(value)	((value) ? (1 << 5) : 0)
++#define GPTU_CLC_SBWE_SET(value)	((value) ? (1 << 4) : 0)
++#define GPTU_CLC_EDIS_SET(value)	((value) ? (1 << 3) : 0)
++#define GPTU_CLC_SPEN_SET(value)	((value) ? (1 << 2) : 0)
++#define GPTU_CLC_DISR_SET(value)	((value) ? (1 << 0) : 0)
++
++/*
++ *  ID Register
++ */
++#define GPTU_ID_ID			GET_BITS(*LQ_GPTU_ID, 15, 8)
++#define GPTU_ID_CFG			GET_BITS(*LQ_GPTU_ID, 7, 5)
++#define GPTU_ID_REV			GET_BITS(*LQ_GPTU_ID, 4, 0)
++
++/*
++ *  Control Register of Timer/Counter nX
++ *    n is the index of block (1 based index)
++ *    X is either A or B
++ */
++#define GPTU_CON_SRC_EG(n, X)		(*LQ_GPTU_CON(n, X) & (1 << 10))
++#define GPTU_CON_SRC_EXT(n, X)		(*LQ_GPTU_CON(n, X) & (1 << 9))
++#define GPTU_CON_SYNC(n, X)		(*LQ_GPTU_CON(n, X) & (1 << 8))
++#define GPTU_CON_EDGE(n, X)		GET_BITS(*LQ_GPTU_CON(n, X), 7, 6)
++#define GPTU_CON_INV(n, X)		(*LQ_GPTU_CON(n, X) & (1 << 5))
++#define GPTU_CON_EXT(n, X)		(*LQ_GPTU_CON(n, A) & (1 << 4))	/* Timer/Counter B does not have this bit */
++#define GPTU_CON_STP(n, X)		(*LQ_GPTU_CON(n, X) & (1 << 3))
++#define GPTU_CON_CNT(n, X)		(*LQ_GPTU_CON(n, X) & (1 << 2))
++#define GPTU_CON_DIR(n, X)		(*LQ_GPTU_CON(n, X) & (1 << 1))
++#define GPTU_CON_EN(n, X)		(*LQ_GPTU_CON(n, X) & (1 << 0))
++
++#define GPTU_CON_SRC_EG_SET(value)	((value) ? 0 : (1 << 10))
++#define GPTU_CON_SRC_EXT_SET(value)	((value) ? (1 << 9) : 0)
++#define GPTU_CON_SYNC_SET(value)	((value) ? (1 << 8) : 0)
++#define GPTU_CON_EDGE_SET(value)	SET_BITS(0, 7, 6, (value))
++#define GPTU_CON_INV_SET(value)		((value) ? (1 << 5) : 0)
++#define GPTU_CON_EXT_SET(value)		((value) ? (1 << 4) : 0)
++#define GPTU_CON_STP_SET(value)		((value) ? (1 << 3) : 0)
++#define GPTU_CON_CNT_SET(value)		((value) ? (1 << 2) : 0)
++#define GPTU_CON_DIR_SET(value)		((value) ? (1 << 1) : 0)
++
++#define GPTU_RUN_RL_SET(value)		((value) ? (1 << 2) : 0)
++#define GPTU_RUN_CEN_SET(value)		((value) ? (1 << 1) : 0)
++#define GPTU_RUN_SEN_SET(value)		((value) ? (1 << 0) : 0)
++
++#define GPTU_IRNEN_TC_SET(n, X, value)	((value) ? (1 << (((n) - 1) * 2 + (X))) : 0)
++#define GPTU_IRNCR_TC_SET(n, X, value)	((value) ? (1 << (((n) - 1) * 2 + (X))) : 0)
++
++#define TIMER_FLAG_MASK_SIZE(x)		(x & 0x0001)
++#define TIMER_FLAG_MASK_TYPE(x)		(x & 0x0002)
++#define TIMER_FLAG_MASK_STOP(x)		(x & 0x0004)
++#define TIMER_FLAG_MASK_DIR(x)		(x & 0x0008)
++#define TIMER_FLAG_NONE_EDGE		0x0000
++#define TIMER_FLAG_MASK_EDGE(x)		(x & 0x0030)
++#define TIMER_FLAG_REAL			0x0000
++#define TIMER_FLAG_INVERT		0x0040
++#define TIMER_FLAG_MASK_INVERT(x)	(x & 0x0040)
++#define TIMER_FLAG_MASK_TRIGGER(x)	(x & 0x0070)
++#define TIMER_FLAG_MASK_SYNC(x)		(x & 0x0080)
++#define TIMER_FLAG_CALLBACK_IN_HB	0x0200
++#define TIMER_FLAG_MASK_HANDLE(x)	(x & 0x0300)
++#define TIMER_FLAG_MASK_SRC(x)		(x & 0x1000)
++
++struct timer_dev_timer {
++	unsigned int f_irq_on;
++	unsigned int irq;
++	unsigned int flag;
++	unsigned long arg1;
++	unsigned long arg2;
++};
++
++struct timer_dev {
++	struct mutex gptu_mutex;
++	unsigned int number_of_timers;
++	unsigned int occupation;
++	unsigned int f_gptu_on;
++	struct timer_dev_timer timer[MAX_NUM_OF_32BIT_TIMER_BLOCKS * 2];
++};
++
++
++unsigned int ltq_get_fpi_bus_clock(int fpi) {
++	struct clk *clk = clk_get_fpi();
++	return clk_get_rate(clk);
++}
++
++
++static long gptu_ioctl(struct file *, unsigned int, unsigned long);
++static int gptu_open(struct inode *, struct file *);
++static int gptu_release(struct inode *, struct file *);
++
++static struct file_operations gptu_fops = {
++	.owner = THIS_MODULE,
++	.unlocked_ioctl = gptu_ioctl,
++	.open = gptu_open,
++	.release = gptu_release
++};
++
++static struct miscdevice gptu_miscdev = {
++	.minor = MISC_DYNAMIC_MINOR,
++	.name = "gptu",
++	.fops = &gptu_fops,
++};
++
++static struct timer_dev timer_dev;
++
++static irqreturn_t timer_irq_handler(int irq, void *p)
++{
++	unsigned int timer;
++	unsigned int flag;
++	struct timer_dev_timer *dev_timer = (struct timer_dev_timer *)p;
++
++	timer = irq - TIMER_INTERRUPT;
++	if (timer < timer_dev.number_of_timers
++		&& dev_timer == &timer_dev.timer[timer]) {
++		/*  Clear interrupt.    */
++		ltq_w32(1 << timer, LQ_GPTU_IRNCR);
++
++		/*  Call user hanler or signal. */
++		flag = dev_timer->flag;
++		if (!(timer & 0x01)
++			|| TIMER_FLAG_MASK_SIZE(flag) == TIMER_FLAG_16BIT) {
++			/* 16-bit timer or timer A of 32-bit timer  */
++			switch (TIMER_FLAG_MASK_HANDLE(flag)) {
++			case TIMER_FLAG_CALLBACK_IN_IRQ:
++			case TIMER_FLAG_CALLBACK_IN_HB:
++				if (dev_timer->arg1)
++					(*(timer_callback)dev_timer->arg1)(dev_timer->arg2);
++				break;
++			case TIMER_FLAG_SIGNAL:
++				send_sig((int)dev_timer->arg2, (struct task_struct *)dev_timer->arg1, 0);
++				break;
++			}
++		}
++	}
++	return IRQ_HANDLED;
++}
++
++static inline void lq_enable_gptu(void)
++{
++	struct clk *clk = clk_get_sys("1e100a00.gptu", NULL);
++	clk_enable(clk);
++
++	//ltq_pmu_enable(PMU_GPT);
++
++	/*  Set divider as 1, disable write protection for SPEN, enable module. */
++	*LQ_GPTU_CLC =
++		GPTU_CLC_SMC_SET(0x00) |
++		GPTU_CLC_RMC_SET(0x01) |
++		GPTU_CLC_FSOE_SET(0) |
++		GPTU_CLC_SBWE_SET(1) |
++		GPTU_CLC_EDIS_SET(0) |
++		GPTU_CLC_SPEN_SET(0) |
++		GPTU_CLC_DISR_SET(0);
++}
++
++static inline void lq_disable_gptu(void)
++{
++	struct clk *clk = clk_get_sys("1e100a00.gptu", NULL);
++	ltq_w32(0x00, LQ_GPTU_IRNEN);
++	ltq_w32(0xfff, LQ_GPTU_IRNCR);
++
++	/*  Set divider as 0, enable write protection for SPEN, disable module. */
++	*LQ_GPTU_CLC =
++		GPTU_CLC_SMC_SET(0x00) |
++		GPTU_CLC_RMC_SET(0x00) |
++		GPTU_CLC_FSOE_SET(0) |
++		GPTU_CLC_SBWE_SET(0) |
++		GPTU_CLC_EDIS_SET(0) |
++		GPTU_CLC_SPEN_SET(0) |
++		GPTU_CLC_DISR_SET(1);
++
++	clk_enable(clk);
++}
++
++int lq_request_timer(unsigned int timer, unsigned int flag,
++	unsigned long value, unsigned long arg1, unsigned long arg2)
++{
++	int ret = 0;
++	unsigned int con_reg, irnen_reg;
++	int n, X;
++
++	if (timer >= FIRST_TIMER + timer_dev.number_of_timers)
++		return -EINVAL;
++
++	printk(KERN_INFO "request_timer(%d, 0x%08X, %lu)...",
++		timer, flag, value);
++
++	if (TIMER_FLAG_MASK_SIZE(flag) == TIMER_FLAG_16BIT)
++		value &= 0xFFFF;
++	else
++		timer &= ~0x01;
++
++	mutex_lock(&timer_dev.gptu_mutex);
++
++	/*
++	 *  Allocate timer.
++	 */
++	if (timer < FIRST_TIMER) {
++		unsigned int mask;
++		unsigned int shift;
++		/* This takes care of TIMER1B which is the only choice for Voice TAPI system */
++		unsigned int offset = TIMER2A;
++
++		/*
++		 *  Pick up a free timer.
++		 */
++		if (TIMER_FLAG_MASK_SIZE(flag) == TIMER_FLAG_16BIT) {
++			mask = 1 << offset;
++			shift = 1;
++		} else {
++			mask = 3 << offset;
++			shift = 2;
++		}
++		for (timer = offset;
++		     timer < offset + timer_dev.number_of_timers;
++		     timer += shift, mask <<= shift)
++			if (!(timer_dev.occupation & mask)) {
++				timer_dev.occupation |= mask;
++				break;
++			}
++		if (timer >= offset + timer_dev.number_of_timers) {
++			printk("failed![%d]\n", __LINE__);
++			mutex_unlock(&timer_dev.gptu_mutex);
++			return -EINVAL;
++		} else
++			ret = timer;
++	} else {
++		register unsigned int mask;
++
++		/*
++		 *  Check if the requested timer is free.
++		 */
++		mask = (TIMER_FLAG_MASK_SIZE(flag) == TIMER_FLAG_16BIT ? 1 : 3) << timer;
++		if ((timer_dev.occupation & mask)) {
++			printk("failed![%d] mask %#x, timer_dev.occupation %#x\n",
++				__LINE__, mask, timer_dev.occupation);
++			mutex_unlock(&timer_dev.gptu_mutex);
++			return -EBUSY;
++		} else {
++			timer_dev.occupation |= mask;
++			ret = 0;
++		}
++	}
++
++	/*
++	 *  Prepare control register value.
++	 */
++	switch (TIMER_FLAG_MASK_EDGE(flag)) {
++	default:
++	case TIMER_FLAG_NONE_EDGE:
++		con_reg = GPTU_CON_EDGE_SET(0x00);
++		break;
++	case TIMER_FLAG_RISE_EDGE:
++		con_reg = GPTU_CON_EDGE_SET(0x01);
++		break;
++	case TIMER_FLAG_FALL_EDGE:
++		con_reg = GPTU_CON_EDGE_SET(0x02);
++		break;
++	case TIMER_FLAG_ANY_EDGE:
++		con_reg = GPTU_CON_EDGE_SET(0x03);
++		break;
++	}
++	if (TIMER_FLAG_MASK_TYPE(flag) == TIMER_FLAG_TIMER)
++		con_reg |=
++			TIMER_FLAG_MASK_SRC(flag) ==
++			TIMER_FLAG_EXT_SRC ? GPTU_CON_SRC_EXT_SET(1) :
++			GPTU_CON_SRC_EXT_SET(0);
++	else
++		con_reg |=
++			TIMER_FLAG_MASK_SRC(flag) ==
++			TIMER_FLAG_EXT_SRC ? GPTU_CON_SRC_EG_SET(1) :
++			GPTU_CON_SRC_EG_SET(0);
++	con_reg |=
++		TIMER_FLAG_MASK_SYNC(flag) ==
++		TIMER_FLAG_UNSYNC ? GPTU_CON_SYNC_SET(0) :
++		GPTU_CON_SYNC_SET(1);
++	con_reg |=
++		TIMER_FLAG_MASK_INVERT(flag) ==
++		TIMER_FLAG_REAL ? GPTU_CON_INV_SET(0) : GPTU_CON_INV_SET(1);
++	con_reg |=
++		TIMER_FLAG_MASK_SIZE(flag) ==
++		TIMER_FLAG_16BIT ? GPTU_CON_EXT_SET(0) :
++		GPTU_CON_EXT_SET(1);
++	con_reg |=
++		TIMER_FLAG_MASK_STOP(flag) ==
++		TIMER_FLAG_ONCE ? GPTU_CON_STP_SET(1) : GPTU_CON_STP_SET(0);
++	con_reg |=
++		TIMER_FLAG_MASK_TYPE(flag) ==
++		TIMER_FLAG_TIMER ? GPTU_CON_CNT_SET(0) :
++		GPTU_CON_CNT_SET(1);
++	con_reg |=
++		TIMER_FLAG_MASK_DIR(flag) ==
++		TIMER_FLAG_UP ? GPTU_CON_DIR_SET(1) : GPTU_CON_DIR_SET(0);
++
++	/*
++	 *  Fill up running data.
++	 */
++	timer_dev.timer[timer - FIRST_TIMER].flag = flag;
++	timer_dev.timer[timer - FIRST_TIMER].arg1 = arg1;
++	timer_dev.timer[timer - FIRST_TIMER].arg2 = arg2;
++	if (TIMER_FLAG_MASK_SIZE(flag) != TIMER_FLAG_16BIT)
++		timer_dev.timer[timer - FIRST_TIMER + 1].flag = flag;
++
++	/*
++	 *  Enable GPTU module.
++	 */
++	if (!timer_dev.f_gptu_on) {
++		lq_enable_gptu();
++		timer_dev.f_gptu_on = 1;
++	}
++
++	/*
++	 *  Enable IRQ.
++	 */
++	if (TIMER_FLAG_MASK_HANDLE(flag) != TIMER_FLAG_NO_HANDLE) {
++		if (TIMER_FLAG_MASK_HANDLE(flag) == TIMER_FLAG_SIGNAL)
++			timer_dev.timer[timer - FIRST_TIMER].arg1 =
++				(unsigned long) find_task_by_vpid((int) arg1);
++
++		irnen_reg = 1 << (timer - FIRST_TIMER);
++
++		if (TIMER_FLAG_MASK_HANDLE(flag) == TIMER_FLAG_SIGNAL
++		    || (TIMER_FLAG_MASK_HANDLE(flag) ==
++			TIMER_FLAG_CALLBACK_IN_IRQ
++			&& timer_dev.timer[timer - FIRST_TIMER].arg1)) {
++			enable_irq(timer_dev.timer[timer - FIRST_TIMER].irq);
++			timer_dev.timer[timer - FIRST_TIMER].f_irq_on = 1;
++		}
++	} else
++		irnen_reg = 0;
++
++	/*
++	 *  Write config register, reload value and enable interrupt.
++	 */
++	n = timer >> 1;
++	X = timer & 0x01;
++	*LQ_GPTU_CON(n, X) = con_reg;
++	*LQ_GPTU_RELOAD(n, X) = value;
++	/* printk("reload value = %d\n", (u32)value); */
++	*LQ_GPTU_IRNEN |= irnen_reg;
++
++	mutex_unlock(&timer_dev.gptu_mutex);
++	printk("successful!\n");
++	return ret;
++}
++EXPORT_SYMBOL(lq_request_timer);
++
++int lq_free_timer(unsigned int timer)
++{
++	unsigned int flag;
++	unsigned int mask;
++	int n, X;
++
++	if (!timer_dev.f_gptu_on)
++		return -EINVAL;
++
++	if (timer < FIRST_TIMER || timer >= FIRST_TIMER + timer_dev.number_of_timers)
++		return -EINVAL;
++
++	mutex_lock(&timer_dev.gptu_mutex);
++
++	flag = timer_dev.timer[timer - FIRST_TIMER].flag;
++	if (TIMER_FLAG_MASK_SIZE(flag) != TIMER_FLAG_16BIT)
++		timer &= ~0x01;
++
++	mask = (TIMER_FLAG_MASK_SIZE(flag) == TIMER_FLAG_16BIT ? 1 : 3) << timer;
++	if (((timer_dev.occupation & mask) ^ mask)) {
++		mutex_unlock(&timer_dev.gptu_mutex);
++		return -EINVAL;
++	}
++
++	n = timer >> 1;
++	X = timer & 0x01;
++
++	if (GPTU_CON_EN(n, X))
++		*LQ_GPTU_RUN(n, X) = GPTU_RUN_CEN_SET(1);
++
++	*LQ_GPTU_IRNEN &= ~GPTU_IRNEN_TC_SET(n, X, 1);
++	*LQ_GPTU_IRNCR |= GPTU_IRNCR_TC_SET(n, X, 1);
++
++	if (timer_dev.timer[timer - FIRST_TIMER].f_irq_on) {
++		disable_irq(timer_dev.timer[timer - FIRST_TIMER].irq);
++		timer_dev.timer[timer - FIRST_TIMER].f_irq_on = 0;
++	}
++
++	timer_dev.occupation &= ~mask;
++	if (!timer_dev.occupation && timer_dev.f_gptu_on) {
++		lq_disable_gptu();
++		timer_dev.f_gptu_on = 0;
++	}
++
++	mutex_unlock(&timer_dev.gptu_mutex);
++
++	return 0;
++}
++EXPORT_SYMBOL(lq_free_timer);
++
++int lq_start_timer(unsigned int timer, int is_resume)
++{
++	unsigned int flag;
++	unsigned int mask;
++	int n, X;
++
++	if (!timer_dev.f_gptu_on)
++		return -EINVAL;
++
++	if (timer < FIRST_TIMER || timer >= FIRST_TIMER + timer_dev.number_of_timers)
++		return -EINVAL;
++
++	mutex_lock(&timer_dev.gptu_mutex);
++
++	flag = timer_dev.timer[timer - FIRST_TIMER].flag;
++	if (TIMER_FLAG_MASK_SIZE(flag) != TIMER_FLAG_16BIT)
++		timer &= ~0x01;
++
++	mask = (TIMER_FLAG_MASK_SIZE(flag) ==
++	TIMER_FLAG_16BIT ? 1 : 3) << timer;
++	if (((timer_dev.occupation & mask) ^ mask)) {
++		mutex_unlock(&timer_dev.gptu_mutex);
++		return -EINVAL;
++	}
++
++	n = timer >> 1;
++	X = timer & 0x01;
++
++	*LQ_GPTU_RUN(n, X) = GPTU_RUN_RL_SET(!is_resume) | GPTU_RUN_SEN_SET(1);
++
++
++	mutex_unlock(&timer_dev.gptu_mutex);
++
++	return 0;
++}
++EXPORT_SYMBOL(lq_start_timer);
++
++int lq_stop_timer(unsigned int timer)
++{
++	unsigned int flag;
++	unsigned int mask;
++	int n, X;
++
++	if (!timer_dev.f_gptu_on)
++		return -EINVAL;
++
++	if (timer < FIRST_TIMER
++	    || timer >= FIRST_TIMER + timer_dev.number_of_timers)
++		return -EINVAL;
++
++	mutex_lock(&timer_dev.gptu_mutex);
++
++	flag = timer_dev.timer[timer - FIRST_TIMER].flag;
++	if (TIMER_FLAG_MASK_SIZE(flag) != TIMER_FLAG_16BIT)
++		timer &= ~0x01;
++
++	mask = (TIMER_FLAG_MASK_SIZE(flag) == TIMER_FLAG_16BIT ? 1 : 3) << timer;
++	if (((timer_dev.occupation & mask) ^ mask)) {
++		mutex_unlock(&timer_dev.gptu_mutex);
++		return -EINVAL;
++	}
++
++	n = timer >> 1;
++	X = timer & 0x01;
++
++	*LQ_GPTU_RUN(n, X) = GPTU_RUN_CEN_SET(1);
++
++	mutex_unlock(&timer_dev.gptu_mutex);
++
++	return 0;
++}
++EXPORT_SYMBOL(lq_stop_timer);
++
++int lq_reset_counter_flags(u32 timer, u32 flags)
++{
++	unsigned int oflag;
++	unsigned int mask, con_reg;
++	int n, X;
++
++	if (!timer_dev.f_gptu_on)
++		return -EINVAL;
++
++	if (timer < FIRST_TIMER || timer >= FIRST_TIMER + timer_dev.number_of_timers)
++		return -EINVAL;
++
++	mutex_lock(&timer_dev.gptu_mutex);
++
++	oflag = timer_dev.timer[timer - FIRST_TIMER].flag;
++	if (TIMER_FLAG_MASK_SIZE(oflag) != TIMER_FLAG_16BIT)
++		timer &= ~0x01;
++
++	mask = (TIMER_FLAG_MASK_SIZE(oflag) == TIMER_FLAG_16BIT ? 1 : 3) << timer;
++	if (((timer_dev.occupation & mask) ^ mask)) {
++		mutex_unlock(&timer_dev.gptu_mutex);
++		return -EINVAL;
++	}
++
++	switch (TIMER_FLAG_MASK_EDGE(flags)) {
++	default:
++	case TIMER_FLAG_NONE_EDGE:
++		con_reg = GPTU_CON_EDGE_SET(0x00);
++		break;
++	case TIMER_FLAG_RISE_EDGE:
++		con_reg = GPTU_CON_EDGE_SET(0x01);
++		break;
++	case TIMER_FLAG_FALL_EDGE:
++		con_reg = GPTU_CON_EDGE_SET(0x02);
++		break;
++	case TIMER_FLAG_ANY_EDGE:
++		con_reg = GPTU_CON_EDGE_SET(0x03);
++		break;
++	}
++	if (TIMER_FLAG_MASK_TYPE(flags) == TIMER_FLAG_TIMER)
++		con_reg |= TIMER_FLAG_MASK_SRC(flags) == TIMER_FLAG_EXT_SRC ? GPTU_CON_SRC_EXT_SET(1) : GPTU_CON_SRC_EXT_SET(0);
++	else
++		con_reg |= TIMER_FLAG_MASK_SRC(flags) == TIMER_FLAG_EXT_SRC ? GPTU_CON_SRC_EG_SET(1) : GPTU_CON_SRC_EG_SET(0);
++	con_reg |= TIMER_FLAG_MASK_SYNC(flags) == TIMER_FLAG_UNSYNC ? GPTU_CON_SYNC_SET(0) : GPTU_CON_SYNC_SET(1);
++	con_reg |= TIMER_FLAG_MASK_INVERT(flags) == TIMER_FLAG_REAL ? GPTU_CON_INV_SET(0) : GPTU_CON_INV_SET(1);
++	con_reg |= TIMER_FLAG_MASK_SIZE(flags) == TIMER_FLAG_16BIT ? GPTU_CON_EXT_SET(0) : GPTU_CON_EXT_SET(1);
++	con_reg |= TIMER_FLAG_MASK_STOP(flags) == TIMER_FLAG_ONCE ? GPTU_CON_STP_SET(1) : GPTU_CON_STP_SET(0);
++	con_reg |= TIMER_FLAG_MASK_TYPE(flags) == TIMER_FLAG_TIMER ? GPTU_CON_CNT_SET(0) : GPTU_CON_CNT_SET(1);
++	con_reg |= TIMER_FLAG_MASK_DIR(flags) == TIMER_FLAG_UP ? GPTU_CON_DIR_SET(1) : GPTU_CON_DIR_SET(0);
++
++	timer_dev.timer[timer - FIRST_TIMER].flag = flags;
++	if (TIMER_FLAG_MASK_SIZE(flags) != TIMER_FLAG_16BIT)
++		timer_dev.timer[timer - FIRST_TIMER + 1].flag = flags;
++
++	n = timer >> 1;
++	X = timer & 0x01;
++
++	*LQ_GPTU_CON(n, X) = con_reg;
++	smp_wmb();
++	mutex_unlock(&timer_dev.gptu_mutex);
++	return 0;
++}
++EXPORT_SYMBOL(lq_reset_counter_flags);
++
++int lq_get_count_value(unsigned int timer, unsigned long *value)
++{
++	unsigned int flag;
++	unsigned int mask;
++	int n, X;
++
++	if (!timer_dev.f_gptu_on)
++		return -EINVAL;
++
++	if (timer < FIRST_TIMER
++	    || timer >= FIRST_TIMER + timer_dev.number_of_timers)
++		return -EINVAL;
++
++	mutex_lock(&timer_dev.gptu_mutex);
++
++	flag = timer_dev.timer[timer - FIRST_TIMER].flag;
++	if (TIMER_FLAG_MASK_SIZE(flag) != TIMER_FLAG_16BIT)
++		timer &= ~0x01;
++
++	mask = (TIMER_FLAG_MASK_SIZE(flag) == TIMER_FLAG_16BIT ? 1 : 3) << timer;
++	if (((timer_dev.occupation & mask) ^ mask)) {
++		mutex_unlock(&timer_dev.gptu_mutex);
++		return -EINVAL;
++	}
++
++	n = timer >> 1;
++	X = timer & 0x01;
++
++	*value = *LQ_GPTU_COUNT(n, X);
++
++
++	mutex_unlock(&timer_dev.gptu_mutex);
++
++	return 0;
++}
++EXPORT_SYMBOL(lq_get_count_value);
++
++u32 lq_cal_divider(unsigned long freq)
++{
++	u64 module_freq, fpi = ltq_get_fpi_bus_clock(2);
++	u32 clock_divider = 1;
++	module_freq = fpi * 1000;
++	do_div(module_freq, clock_divider * freq);
++	return module_freq;
++}
++EXPORT_SYMBOL(lq_cal_divider);
++
++int lq_set_timer(unsigned int timer, unsigned int freq, int is_cyclic,
++	int is_ext_src, unsigned int handle_flag, unsigned long arg1,
++	unsigned long arg2)
++{
++	unsigned long divider;
++	unsigned int flag;
++
++	divider = lq_cal_divider(freq);
++	if (divider == 0)
++		return -EINVAL;
++	flag = ((divider & ~0xFFFF) ? TIMER_FLAG_32BIT : TIMER_FLAG_16BIT)
++		| (is_cyclic ? TIMER_FLAG_CYCLIC : TIMER_FLAG_ONCE)
++		| (is_ext_src ? TIMER_FLAG_EXT_SRC : TIMER_FLAG_INT_SRC)
++		| TIMER_FLAG_TIMER | TIMER_FLAG_DOWN
++		| TIMER_FLAG_MASK_HANDLE(handle_flag);
++
++	printk(KERN_INFO "lq_set_timer(%d, %d), divider = %lu\n",
++		timer, freq, divider);
++	return lq_request_timer(timer, flag, divider, arg1, arg2);
++}
++EXPORT_SYMBOL(lq_set_timer);
++
++int lq_set_counter(unsigned int timer, unsigned int flag, u32 reload,
++	unsigned long arg1, unsigned long arg2)
++{
++	printk(KERN_INFO "lq_set_counter(%d, %#x, %d)\n", timer, flag, reload);
++	return lq_request_timer(timer, flag, reload, arg1, arg2);
++}
++EXPORT_SYMBOL(lq_set_counter);
++
++static long gptu_ioctl(struct file *file, unsigned int cmd,
++	unsigned long arg)
++{
++	int ret;
++	struct gptu_ioctl_param param;
++
++	if (!access_ok(VERIFY_READ, arg, sizeof(struct gptu_ioctl_param)))
++		return -EFAULT;
++	copy_from_user(&param, (void *) arg, sizeof(param));
++
++	if ((((cmd == GPTU_REQUEST_TIMER || cmd == GPTU_SET_TIMER
++	       || GPTU_SET_COUNTER) && param.timer < 2)
++	     || cmd == GPTU_GET_COUNT_VALUE || cmd == GPTU_CALCULATE_DIVIDER)
++	    && !access_ok(VERIFY_WRITE, arg,
++			   sizeof(struct gptu_ioctl_param)))
++		return -EFAULT;
++
++	switch (cmd) {
++	case GPTU_REQUEST_TIMER:
++		ret = lq_request_timer(param.timer, param.flag, param.value,
++				     (unsigned long) param.pid,
++				     (unsigned long) param.sig);
++		if (ret > 0) {
++			copy_to_user(&((struct gptu_ioctl_param *) arg)->
++				      timer, &ret, sizeof(&ret));
++			ret = 0;
++		}
++		break;
++	case GPTU_FREE_TIMER:
++		ret = lq_free_timer(param.timer);
++		break;
++	case GPTU_START_TIMER:
++		ret = lq_start_timer(param.timer, param.flag);
++		break;
++	case GPTU_STOP_TIMER:
++		ret = lq_stop_timer(param.timer);
++		break;
++	case GPTU_GET_COUNT_VALUE:
++		ret = lq_get_count_value(param.timer, &param.value);
++		if (!ret)
++			copy_to_user(&((struct gptu_ioctl_param *) arg)->
++				      value, &param.value,
++				      sizeof(param.value));
++		break;
++	case GPTU_CALCULATE_DIVIDER:
++		param.value = lq_cal_divider(param.value);
++		if (param.value == 0)
++			ret = -EINVAL;
++		else {
++			copy_to_user(&((struct gptu_ioctl_param *) arg)->
++				      value, &param.value,
++				      sizeof(param.value));
++			ret = 0;
++		}
++		break;
++	case GPTU_SET_TIMER:
++		ret = lq_set_timer(param.timer, param.value,
++				 TIMER_FLAG_MASK_STOP(param.flag) !=
++				 TIMER_FLAG_ONCE ? 1 : 0,
++				 TIMER_FLAG_MASK_SRC(param.flag) ==
++				 TIMER_FLAG_EXT_SRC ? 1 : 0,
++				 TIMER_FLAG_MASK_HANDLE(param.flag) ==
++				 TIMER_FLAG_SIGNAL ? TIMER_FLAG_SIGNAL :
++				 TIMER_FLAG_NO_HANDLE,
++				 (unsigned long) param.pid,
++				 (unsigned long) param.sig);
++		if (ret > 0) {
++			copy_to_user(&((struct gptu_ioctl_param *) arg)->
++				      timer, &ret, sizeof(&ret));
++			ret = 0;
++		}
++		break;
++	case GPTU_SET_COUNTER:
++		lq_set_counter(param.timer, param.flag, param.value, 0, 0);
++		if (ret > 0) {
++			copy_to_user(&((struct gptu_ioctl_param *) arg)->
++				      timer, &ret, sizeof(&ret));
++			ret = 0;
++		}
++		break;
++	default:
++		ret = -ENOTTY;
++	}
++
++	return ret;
++}
++
++static int gptu_open(struct inode *inode, struct file *file)
++{
++	return 0;
++}
++
++static int gptu_release(struct inode *inode, struct file *file)
++{
++	return 0;
++}
++
++int __init lq_gptu_init(void)
++{
++	int ret;
++	unsigned int i;
++
++	ltq_w32(0, LQ_GPTU_IRNEN);
++	ltq_w32(0xfff, LQ_GPTU_IRNCR);
++
++	memset(&timer_dev, 0, sizeof(timer_dev));
++	mutex_init(&timer_dev.gptu_mutex);
++
++	lq_enable_gptu();
++	timer_dev.number_of_timers = GPTU_ID_CFG * 2;
++	lq_disable_gptu();
++	if (timer_dev.number_of_timers > MAX_NUM_OF_32BIT_TIMER_BLOCKS * 2)
++		timer_dev.number_of_timers = MAX_NUM_OF_32BIT_TIMER_BLOCKS * 2;
++	printk(KERN_INFO "gptu: totally %d 16-bit timers/counters\n", timer_dev.number_of_timers);
++
++	ret = misc_register(&gptu_miscdev);
++	if (ret) {
++		printk(KERN_ERR "gptu: can't misc_register, get error %d\n", -ret);
++		return ret;
++	} else {
++		printk(KERN_INFO "gptu: misc_register on minor %d\n", gptu_miscdev.minor);
++	}
++
++	for (i = 0; i < timer_dev.number_of_timers; i++) {
++		ret = request_irq(TIMER_INTERRUPT + i, timer_irq_handler, IRQF_TIMER, gptu_miscdev.name, &timer_dev.timer[i]);
++		if (ret) {
++			for (; i >= 0; i--)
++				free_irq(TIMER_INTERRUPT + i, &timer_dev.timer[i]);
++			misc_deregister(&gptu_miscdev);
++			printk(KERN_ERR "gptu: failed in requesting irq (%d), get error %d\n", i, -ret);
++			return ret;
++		} else {
++			timer_dev.timer[i].irq = TIMER_INTERRUPT + i;
++			disable_irq(timer_dev.timer[i].irq);
++			printk(KERN_INFO "gptu: succeeded to request irq %d\n", timer_dev.timer[i].irq);
++		}
++	}
++
++	return 0;
++}
++
++void __exit lq_gptu_exit(void)
++{
++	unsigned int i;
++
++	for (i = 0; i < timer_dev.number_of_timers; i++) {
++		if (timer_dev.timer[i].f_irq_on)
++			disable_irq(timer_dev.timer[i].irq);
++		free_irq(timer_dev.timer[i].irq, &timer_dev.timer[i]);
++	}
++	lq_disable_gptu();
++	misc_deregister(&gptu_miscdev);
++}
++
++module_init(lq_gptu_init);
++module_exit(lq_gptu_exit);
++
++#endif