These changes are the raw update to linux-4.4.6-rt14. Kernel sources

are taken from kernel.org, and rt patch from the rt wiki download page.

During the rebasing, the following patch collided:

Force tick interrupt and get rid of softirq magic(I70131fb85).

Collisions have been removed because its logic was found on the
source already.

Change-Id: I7f57a4081d9deaa0d9ccfc41a6c8daccdee3b769
Signed-off-by: José Pekkarinen <jose.pekkarinen@nokia.com>

2 files changed, 0 insertions, 1000 deletions

diff --git a/kernel/arch/cris/arch-v32/drivers/mach-a3/Makefile b/kernel/arch/cris/arch-v32/drivers/mach-a3/Makefile
index 5c6d2a2a0..59028d0b9 100644
--- a/kernel/arch/cris/arch-v32/drivers/mach-a3/Makefile
+++ b/kernel/arch/cris/arch-v32/drivers/mach-a3/Makefile
@@ -3,4 +3,3 @@
 #
 
 obj-$(CONFIG_ETRAX_NANDFLASH)   += nandflash.o
-obj-$(CONFIG_ETRAX_GPIO)        += gpio.o
diff --git a/kernel/arch/cris/arch-v32/drivers/mach-a3/gpio.c b/kernel/arch/cris/arch-v32/drivers/mach-a3/gpio.c
deleted file mode 100644
index 74f9fe809..000000000
--- a/kernel/arch/cris/arch-v32/drivers/mach-a3/gpio.c
+++ /dev/null
@@ -1,999 +0,0 @@
-/*
- * Artec-3 general port I/O device
- *
- * Copyright (c) 2007 Axis Communications AB
- *
- * Authors:    Bjorn Wesen      (initial version)
- *             Ola Knutsson     (LED handling)
- *             Johan Adolfsson  (read/set directions, write, port G,
- *                               port to ETRAX FS.
- *             Ricard Wanderlof (PWM for Artpec-3)
- *
- */
-
-#include <linux/module.h>
-#include <linux/sched.h>
-#include <linux/slab.h>
-#include <linux/ioport.h>
-#include <linux/errno.h>
-#include <linux/kernel.h>
-#include <linux/fs.h>
-#include <linux/string.h>
-#include <linux/poll.h>
-#include <linux/init.h>
-#include <linux/interrupt.h>
-#include <linux/spinlock.h>
-#include <linux/mutex.h>
-
-#include <asm/etraxgpio.h>
-#include <hwregs/reg_map.h>
-#include <hwregs/reg_rdwr.h>
-#include <hwregs/gio_defs.h>
-#include <hwregs/intr_vect_defs.h>
-#include <asm/io.h>
-#include <asm/irq.h>
-#include <mach/pinmux.h>
-
-#ifdef CONFIG_ETRAX_VIRTUAL_GPIO
-#include "../i2c.h"
-
-#define VIRT_I2C_ADDR 0x40
-#endif
-
-/* The following gio ports on ARTPEC-3 is available:
- * pa 32 bits
- * pb 32 bits
- * pc 16 bits
- * each port has a rw_px_dout, r_px_din and rw_px_oe register.
- */
-
-#define GPIO_MAJOR 120  /* experimental MAJOR number */
-
-#define I2C_INTERRUPT_BITS 0x300 /* i2c0_done and i2c1_done bits */
-
-#define D(x)
-
-#if 0
-static int dp_cnt;
-#define DP(x) \
-	do { \
-		dp_cnt++; \
-		if (dp_cnt % 1000 == 0) \
-			x; \
-	} while (0)
-#else
-#define DP(x)
-#endif
-
-static DEFINE_MUTEX(gpio_mutex);
-static char gpio_name[] = "etrax gpio";
-
-#ifdef CONFIG_ETRAX_VIRTUAL_GPIO
-static int virtual_gpio_ioctl(struct file *file, unsigned int cmd,
-			      unsigned long arg);
-#endif
-static long gpio_ioctl(struct file *file, unsigned int cmd, unsigned long arg);
-static ssize_t gpio_write(struct file *file, const char __user *buf,
-	size_t count, loff_t *off);
-static int gpio_open(struct inode *inode, struct file *filp);
-static int gpio_release(struct inode *inode, struct file *filp);
-static unsigned int gpio_poll(struct file *filp,
-	struct poll_table_struct *wait);
-
-/* private data per open() of this driver */
-
-struct gpio_private {
-	struct gpio_private *next;
-	/* The IO_CFG_WRITE_MODE_VALUE only support 8 bits: */
-	unsigned char clk_mask;
-	unsigned char data_mask;
-	unsigned char write_msb;
-	unsigned char pad1;
-	/* These fields are generic */
-	unsigned long highalarm, lowalarm;
-	wait_queue_head_t alarm_wq;
-	int minor;
-};
-
-static void gpio_set_alarm(struct gpio_private *priv);
-static int gpio_leds_ioctl(unsigned int cmd, unsigned long arg);
-static int gpio_pwm_ioctl(struct gpio_private *priv, unsigned int cmd,
-	unsigned long arg);
-
-
-/* linked list of alarms to check for */
-
-static struct gpio_private *alarmlist;
-
-static int wanted_interrupts;
-
-static DEFINE_SPINLOCK(gpio_lock);
-
-#define NUM_PORTS (GPIO_MINOR_LAST+1)
-#define GIO_REG_RD_ADDR(reg) \
-	(unsigned long *)(regi_gio + REG_RD_ADDR_gio_##reg)
-#define GIO_REG_WR_ADDR(reg) \
-	(unsigned long *)(regi_gio + REG_WR_ADDR_gio_##reg)
-static unsigned long led_dummy;
-static unsigned long port_d_dummy;	/* Only input on Artpec-3 */
-#ifdef CONFIG_ETRAX_VIRTUAL_GPIO
-static unsigned long port_e_dummy;	/* Non existent on Artpec-3 */
-static unsigned long virtual_dummy;
-static unsigned long virtual_rw_pv_oe = CONFIG_ETRAX_DEF_GIO_PV_OE;
-static unsigned short cached_virtual_gpio_read;
-#endif
-
-static unsigned long *data_out[NUM_PORTS] = {
-	GIO_REG_WR_ADDR(rw_pa_dout),
-	GIO_REG_WR_ADDR(rw_pb_dout),
-	&led_dummy,
-	GIO_REG_WR_ADDR(rw_pc_dout),
-	&port_d_dummy,
-#ifdef CONFIG_ETRAX_VIRTUAL_GPIO
-	&port_e_dummy,
-	&virtual_dummy,
-#endif
-};
-
-static unsigned long *data_in[NUM_PORTS] = {
-	GIO_REG_RD_ADDR(r_pa_din),
-	GIO_REG_RD_ADDR(r_pb_din),
-	&led_dummy,
-	GIO_REG_RD_ADDR(r_pc_din),
-	GIO_REG_RD_ADDR(r_pd_din),
-#ifdef CONFIG_ETRAX_VIRTUAL_GPIO
-	&port_e_dummy,
-	&virtual_dummy,
-#endif
-};
-
-static unsigned long changeable_dir[NUM_PORTS] = {
-	CONFIG_ETRAX_PA_CHANGEABLE_DIR,
-	CONFIG_ETRAX_PB_CHANGEABLE_DIR,
-	0,
-	CONFIG_ETRAX_PC_CHANGEABLE_DIR,
-	0,
-#ifdef CONFIG_ETRAX_VIRTUAL_GPIO
-	0,
-	CONFIG_ETRAX_PV_CHANGEABLE_DIR,
-#endif
-};
-
-static unsigned long changeable_bits[NUM_PORTS] = {
-	CONFIG_ETRAX_PA_CHANGEABLE_BITS,
-	CONFIG_ETRAX_PB_CHANGEABLE_BITS,
-	0,
-	CONFIG_ETRAX_PC_CHANGEABLE_BITS,
-	0,
-#ifdef CONFIG_ETRAX_VIRTUAL_GPIO
-	0,
-	CONFIG_ETRAX_PV_CHANGEABLE_BITS,
-#endif
-};
-
-static unsigned long *dir_oe[NUM_PORTS] = {
-	GIO_REG_WR_ADDR(rw_pa_oe),
-	GIO_REG_WR_ADDR(rw_pb_oe),
-	&led_dummy,
-	GIO_REG_WR_ADDR(rw_pc_oe),
-	&port_d_dummy,
-#ifdef CONFIG_ETRAX_VIRTUAL_GPIO
-	&port_e_dummy,
-	&virtual_rw_pv_oe,
-#endif
-};
-
-static void gpio_set_alarm(struct gpio_private *priv)
-{
-	int bit;
-	int intr_cfg;
-	int mask;
-	int pins;
-	unsigned long flags;
-
-	spin_lock_irqsave(&gpio_lock, flags);
-	intr_cfg = REG_RD_INT(gio, regi_gio, rw_intr_cfg);
-	pins = REG_RD_INT(gio, regi_gio, rw_intr_pins);
-	mask = REG_RD_INT(gio, regi_gio, rw_intr_mask) & I2C_INTERRUPT_BITS;
-
-	for (bit = 0; bit < 32; bit++) {
-		int intr = bit % 8;
-		int pin = bit / 8;
-		if (priv->minor < GPIO_MINOR_LEDS)
-			pin += priv->minor * 4;
-		else
-			pin += (priv->minor - 1) * 4;
-
-		if (priv->highalarm & (1<<bit)) {
-			intr_cfg |= (regk_gio_hi << (intr * 3));
-			mask |= 1 << intr;
-			wanted_interrupts = mask & 0xff;
-			pins |= pin << (intr * 4);
-		} else if (priv->lowalarm & (1<<bit)) {
-			intr_cfg |= (regk_gio_lo << (intr * 3));
-			mask |= 1 << intr;
-			wanted_interrupts = mask & 0xff;
-			pins |= pin << (intr * 4);
-		}
-	}
-
-	REG_WR_INT(gio, regi_gio, rw_intr_cfg, intr_cfg);
-	REG_WR_INT(gio, regi_gio, rw_intr_pins, pins);
-	REG_WR_INT(gio, regi_gio, rw_intr_mask, mask);
-
-	spin_unlock_irqrestore(&gpio_lock, flags);
-}
-
-static unsigned int gpio_poll(struct file *file, struct poll_table_struct *wait)
-{
-	unsigned int mask = 0;
-	struct gpio_private *priv = file->private_data;
-	unsigned long data;
-	unsigned long tmp;
-
-	if (priv->minor >= GPIO_MINOR_PWM0 &&
-	    priv->minor <= GPIO_MINOR_LAST_PWM)
-		return 0;
-
-	poll_wait(file, &priv->alarm_wq, wait);
-	if (priv->minor <= GPIO_MINOR_D) {
-		data = readl(data_in[priv->minor]);
-		REG_WR_INT(gio, regi_gio, rw_ack_intr, wanted_interrupts);
-		tmp = REG_RD_INT(gio, regi_gio, rw_intr_mask);
-		tmp &= I2C_INTERRUPT_BITS;
-		tmp |= wanted_interrupts;
-		REG_WR_INT(gio, regi_gio, rw_intr_mask, tmp);
-	} else
-		return 0;
-
-	if ((data & priv->highalarm) || (~data & priv->lowalarm))
-		mask = POLLIN|POLLRDNORM;
-
-	DP(printk(KERN_DEBUG "gpio_poll ready: mask 0x%08X\n", mask));
-	return mask;
-}
-
-static irqreturn_t gpio_interrupt(int irq, void *dev_id)
-{
-	reg_gio_rw_intr_mask intr_mask;
-	reg_gio_r_masked_intr masked_intr;
-	reg_gio_rw_ack_intr ack_intr;
-	unsigned long flags;
-	unsigned long tmp;
-	unsigned long tmp2;
-#ifdef CONFIG_ETRAX_VIRTUAL_GPIO
-	unsigned char enable_gpiov_ack = 0;
-#endif
-
-	/* Find what PA interrupts are active */
-	masked_intr = REG_RD(gio, regi_gio, r_masked_intr);
-	tmp = REG_TYPE_CONV(unsigned long, reg_gio_r_masked_intr, masked_intr);
-
-	/* Find those that we have enabled */
-	spin_lock_irqsave(&gpio_lock, flags);
-	tmp &= wanted_interrupts;
-	spin_unlock_irqrestore(&gpio_lock, flags);
-
-#ifdef CONFIG_ETRAX_VIRTUAL_GPIO
-	/* Something changed on virtual GPIO. Interrupt is acked by
-	 * reading the device.
-	 */
-	if (tmp & (1 << CONFIG_ETRAX_VIRTUAL_GPIO_INTERRUPT_PA_PIN)) {
-		i2c_read(VIRT_I2C_ADDR, (void *)&cached_virtual_gpio_read,
-			sizeof(cached_virtual_gpio_read));
-		enable_gpiov_ack = 1;
-	}
-#endif
-
-	/* Ack them */
-	ack_intr = REG_TYPE_CONV(reg_gio_rw_ack_intr, unsigned long, tmp);
-	REG_WR(gio, regi_gio, rw_ack_intr, ack_intr);
-
-	/* Disable those interrupts.. */
-	intr_mask = REG_RD(gio, regi_gio, rw_intr_mask);
-	tmp2 = REG_TYPE_CONV(unsigned long, reg_gio_rw_intr_mask, intr_mask);
-	tmp2 &= ~tmp;
-#ifdef CONFIG_ETRAX_VIRTUAL_GPIO
-	/* Do not disable interrupt on virtual GPIO. Changes on virtual
-	 * pins are only noticed by an interrupt.
-	 */
-	if (enable_gpiov_ack)
-		tmp2 |= (1 << CONFIG_ETRAX_VIRTUAL_GPIO_INTERRUPT_PA_PIN);
-#endif
-	intr_mask = REG_TYPE_CONV(reg_gio_rw_intr_mask, unsigned long, tmp2);
-	REG_WR(gio, regi_gio, rw_intr_mask, intr_mask);
-
-	return IRQ_RETVAL(tmp);
-}
-
-static void gpio_write_bit(unsigned long *port, unsigned char data, int bit,
-	unsigned char clk_mask, unsigned char data_mask)
-{
-	unsigned long shadow = readl(port) & ~clk_mask;
-	writel(shadow, port);
-	if (data & 1 << bit)
-		shadow |= data_mask;
-	else
-		shadow &= ~data_mask;
-	writel(shadow, port);
-	/* For FPGA: min 5.0ns (DCC) before CCLK high */
-	shadow |= clk_mask;
-	writel(shadow, port);
-}
-
-static void gpio_write_byte(struct gpio_private *priv, unsigned long *port,
-		unsigned char data)
-{
-	int i;
-
-	if (priv->write_msb)
-		for (i = 7; i >= 0; i--)
-			gpio_write_bit(port, data, i, priv->clk_mask,
-				priv->data_mask);
-	else
-		for (i = 0; i <= 7; i++)
-			gpio_write_bit(port, data, i, priv->clk_mask,
-				priv->data_mask);
-}
-
-
-static ssize_t gpio_write(struct file *file, const char __user *buf,
-	size_t count, loff_t *off)
-{
-	struct gpio_private *priv = file->private_data;
-	unsigned long flags;
-	ssize_t retval = count;
-	/* Only bits 0-7 may be used for write operations but allow all
-	   devices except leds... */
-#ifdef CONFIG_ETRAX_VIRTUAL_GPIO
-	if (priv->minor == GPIO_MINOR_V)
-		return -EFAULT;
-#endif
-	if (priv->minor == GPIO_MINOR_LEDS)
-		return -EFAULT;
-
-	if (priv->minor >= GPIO_MINOR_PWM0 &&
-	    priv->minor <= GPIO_MINOR_LAST_PWM)
-		return -EFAULT;
-
-	if (!access_ok(VERIFY_READ, buf, count))
-		return -EFAULT;
-
-	/* It must have been configured using the IO_CFG_WRITE_MODE */
-	/* Perhaps a better error code? */
-	if (priv->clk_mask == 0 || priv->data_mask == 0)
-		return -EPERM;
-
-	D(printk(KERN_DEBUG "gpio_write: %lu to data 0x%02X clk 0x%02X "
-		"msb: %i\n",
-		count, priv->data_mask, priv->clk_mask, priv->write_msb));
-
-	spin_lock_irqsave(&gpio_lock, flags);
-
-	while (count--)
-		gpio_write_byte(priv, data_out[priv->minor], *buf++);
-
-	spin_unlock_irqrestore(&gpio_lock, flags);
-	return retval;
-}
-
-static int gpio_open(struct inode *inode, struct file *filp)
-{
-	struct gpio_private *priv;
-	int p = iminor(inode);
-
-	if (p > GPIO_MINOR_LAST_PWM ||
-	    (p > GPIO_MINOR_LAST && p < GPIO_MINOR_PWM0))
-		return -EINVAL;
-
-	priv = kmalloc(sizeof(struct gpio_private), GFP_KERNEL);
-
-	if (!priv)
-		return -ENOMEM;
-
-	mutex_lock(&gpio_mutex);
-	memset(priv, 0, sizeof(*priv));
-
-	priv->minor = p;
-	filp->private_data = priv;
-
-	/* initialize the io/alarm struct, not for PWM ports though  */
-	if (p <= GPIO_MINOR_LAST) {
-
-		priv->clk_mask = 0;
-		priv->data_mask = 0;
-		priv->highalarm = 0;
-		priv->lowalarm = 0;
-
-		init_waitqueue_head(&priv->alarm_wq);
-
-		/* link it into our alarmlist */
-		spin_lock_irq(&gpio_lock);
-		priv->next = alarmlist;
-		alarmlist = priv;
-		spin_unlock_irq(&gpio_lock);
-	}
-
-	mutex_unlock(&gpio_mutex);
-	return 0;
-}
-
-static int gpio_release(struct inode *inode, struct file *filp)
-{
-	struct gpio_private *p;
-	struct gpio_private *todel;
-	/* local copies while updating them: */
-	unsigned long a_high, a_low;
-
-	/* prepare to free private structure */
-	todel = filp->private_data;
-
-	/* unlink from alarmlist - only for non-PWM ports though */
-	if (todel->minor <= GPIO_MINOR_LAST) {
-		spin_lock_irq(&gpio_lock);
-		p = alarmlist;
-
-		if (p == todel)
-			alarmlist = todel->next;
-		 else {
-			while (p->next != todel)
-				p = p->next;
-			p->next = todel->next;
-		}
-
-		/* Check if there are still any alarms set */
-		p = alarmlist;
-		a_high = 0;
-		a_low = 0;
-		while (p) {
-			if (p->minor == GPIO_MINOR_A) {
-#ifdef CONFIG_ETRAX_VIRTUAL_GPIO
-				p->lowalarm |= (1 << CONFIG_ETRAX_VIRTUAL_GPIO_INTERRUPT_PA_PIN);
-#endif
-				a_high |= p->highalarm;
-				a_low |= p->lowalarm;
-			}
-
-			p = p->next;
-		}
-
-#ifdef CONFIG_ETRAX_VIRTUAL_GPIO
-	/* Variable 'a_low' needs to be set here again
-	 * to ensure that interrupt for virtual GPIO is handled.
-	 */
-		a_low |= (1 << CONFIG_ETRAX_VIRTUAL_GPIO_INTERRUPT_PA_PIN);
-#endif
-
-		spin_unlock_irq(&gpio_lock);
-	}
-	kfree(todel);
-
-	return 0;
-}
-
-/* Main device API. ioctl's to read/set/clear bits, as well as to
- * set alarms to wait for using a subsequent select().
- */
-
-inline unsigned long setget_input(struct gpio_private *priv, unsigned long arg)
-{
-	/* Set direction 0=unchanged 1=input,
-	 * return mask with 1=input
-	 */
-	unsigned long flags;
-	unsigned long dir_shadow;
-
-	spin_lock_irqsave(&gpio_lock, flags);
-
-	dir_shadow = readl(dir_oe[priv->minor]) &
-		~(arg & changeable_dir[priv->minor]);
-	writel(dir_shadow, dir_oe[priv->minor]);
-
-	spin_unlock_irqrestore(&gpio_lock, flags);
-
-	if (priv->minor == GPIO_MINOR_C)
-		dir_shadow ^= 0xFFFF;		/* Only 16 bits */
-#ifdef CONFIG_ETRAX_VIRTUAL_GPIO
-	else if (priv->minor == GPIO_MINOR_V)
-		dir_shadow ^= 0xFFFF;		/* Only 16 bits */
-#endif
-	else
-		dir_shadow ^= 0xFFFFFFFF;	/* PA, PB and PD 32 bits */
-
-	return dir_shadow;
-
-} /* setget_input */
-
-static inline unsigned long setget_output(struct gpio_private *priv,
-	unsigned long arg)
-{
-	unsigned long flags;
-	unsigned long dir_shadow;
-
-	spin_lock_irqsave(&gpio_lock, flags);
-
-	dir_shadow = readl(dir_oe[priv->minor]) |
-		(arg & changeable_dir[priv->minor]);
-	writel(dir_shadow, dir_oe[priv->minor]);
-
-	spin_unlock_irqrestore(&gpio_lock, flags);
-	return dir_shadow;
-} /* setget_output */
-
-static long gpio_ioctl_unlocked(struct file *file,
-	unsigned int cmd, unsigned long arg)
-{
-	unsigned long flags;
-	unsigned long val;
-	unsigned long shadow;
-	struct gpio_private *priv = file->private_data;
-
-	if (_IOC_TYPE(cmd) != ETRAXGPIO_IOCTYPE)
-		return -ENOTTY;
-
-	/* Check for special ioctl handlers first */
-
-#ifdef CONFIG_ETRAX_VIRTUAL_GPIO
-	if (priv->minor == GPIO_MINOR_V)
-		return virtual_gpio_ioctl(file, cmd, arg);
-#endif
-
-	if (priv->minor == GPIO_MINOR_LEDS)
-		return gpio_leds_ioctl(cmd, arg);
-
-	if (priv->minor >= GPIO_MINOR_PWM0 &&
-	    priv->minor <= GPIO_MINOR_LAST_PWM)
-		return gpio_pwm_ioctl(priv, cmd, arg);
-
-	switch (_IOC_NR(cmd)) {
-	case IO_READBITS: /* Use IO_READ_INBITS and IO_READ_OUTBITS instead */
-		/* Read the port. */
-		return readl(data_in[priv->minor]);
-	case IO_SETBITS:
-		spin_lock_irqsave(&gpio_lock, flags);
-		/* Set changeable bits with a 1 in arg. */
-		shadow = readl(data_out[priv->minor]) |
-			(arg & changeable_bits[priv->minor]);
-		writel(shadow, data_out[priv->minor]);
-		spin_unlock_irqrestore(&gpio_lock, flags);
-		break;
-	case IO_CLRBITS:
-		spin_lock_irqsave(&gpio_lock, flags);
-		/* Clear changeable bits with a 1 in arg. */
-		shadow = readl(data_out[priv->minor]) &
-			~(arg & changeable_bits[priv->minor]);
-		writel(shadow, data_out[priv->minor]);
-		spin_unlock_irqrestore(&gpio_lock, flags);
-		break;
-	case IO_HIGHALARM:
-		/* Set alarm when bits with 1 in arg go high. */
-		priv->highalarm |= arg;
-		gpio_set_alarm(priv);
-		break;
-	case IO_LOWALARM:
-		/* Set alarm when bits with 1 in arg go low. */
-		priv->lowalarm |= arg;
-		gpio_set_alarm(priv);
-		break;
-	case IO_CLRALARM:
-		/* Clear alarm for bits with 1 in arg. */
-		priv->highalarm &= ~arg;
-		priv->lowalarm  &= ~arg;
-		gpio_set_alarm(priv);
-		break;
-	case IO_READDIR: /* Use IO_SETGET_INPUT/OUTPUT instead! */
-		/* Read direction 0=input 1=output */
-		return readl(dir_oe[priv->minor]);
-
-	case IO_SETINPUT: /* Use IO_SETGET_INPUT instead! */
-		/* Set direction 0=unchanged 1=input,
-		 * return mask with 1=input
-		 */
-		return setget_input(priv, arg);
-
-	case IO_SETOUTPUT: /* Use IO_SETGET_OUTPUT instead! */
-		/* Set direction 0=unchanged 1=output,
-		 * return mask with 1=output
-		 */
-		return setget_output(priv, arg);
-
-	case IO_CFG_WRITE_MODE:
-	{
-		int res = -EPERM;
-		unsigned long dir_shadow, clk_mask, data_mask, write_msb;
-
-		clk_mask = arg & 0xFF;
-		data_mask = (arg >> 8) & 0xFF;
-		write_msb = (arg >> 16) & 0x01;
-
-		/* Check if we're allowed to change the bits and
-		 * the direction is correct
-		 */
-		spin_lock_irqsave(&gpio_lock, flags);
-		dir_shadow = readl(dir_oe[priv->minor]);
-		if ((clk_mask & changeable_bits[priv->minor]) &&
-		    (data_mask & changeable_bits[priv->minor]) &&
-		    (clk_mask & dir_shadow) &&
-		    (data_mask & dir_shadow)) {
-			priv->clk_mask = clk_mask;
-			priv->data_mask = data_mask;
-			priv->write_msb = write_msb;
-			res = 0;
-		}
-		spin_unlock_irqrestore(&gpio_lock, flags);
-
-		return res;
-	}
-	case IO_READ_INBITS:
-		/* *arg is result of reading the input pins */
-		val = readl(data_in[priv->minor]);
-		if (copy_to_user((void __user *)arg, &val, sizeof(val)))
-			return -EFAULT;
-		return 0;
-	case IO_READ_OUTBITS:
-		 /* *arg is result of reading the output shadow */
-		val = *data_out[priv->minor];
-		if (copy_to_user((void __user *)arg, &val, sizeof(val)))
-			return -EFAULT;
-		break;
-	case IO_SETGET_INPUT:
-		/* bits set in *arg is set to input,
-		 * *arg updated with current input pins.
-		 */
-		if (copy_from_user(&val, (void __user *)arg, sizeof(val)))
-			return -EFAULT;
-		val = setget_input(priv, val);
-		if (copy_to_user((void __user *)arg, &val, sizeof(val)))
-			return -EFAULT;
-		break;
-	case IO_SETGET_OUTPUT:
-		/* bits set in *arg is set to output,
-		 * *arg updated with current output pins.
-		 */
-		if (copy_from_user(&val, (void __user *)arg, sizeof(val)))
-			return -EFAULT;
-		val = setget_output(priv, val);
-		if (copy_to_user((void __user *)arg, &val, sizeof(val)))
-			return -EFAULT;
-		break;
-	default:
-		return -EINVAL;
-	} /* switch */
-
-	return 0;
-}
-
-static long gpio_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
-{
-       long ret;
-
-       mutex_lock(&gpio_mutex);
-       ret = gpio_ioctl_unlocked(file, cmd, arg);
-       mutex_unlock(&gpio_mutex);
-
-       return ret;
-}
-
-#ifdef CONFIG_ETRAX_VIRTUAL_GPIO
-static int virtual_gpio_ioctl(struct file *file, unsigned int cmd,
-	unsigned long arg)
-{
-	unsigned long flags;
-	unsigned short val;
-	unsigned short shadow;
-	struct gpio_private *priv = file->private_data;
-
-	switch (_IOC_NR(cmd)) {
-	case IO_SETBITS:
-		spin_lock_irqsave(&gpio_lock, flags);
-		/* Set changeable bits with a 1 in arg. */
-		i2c_read(VIRT_I2C_ADDR, (void *)&shadow, sizeof(shadow));
-		shadow |= ~readl(dir_oe[priv->minor]) |
-			(arg & changeable_bits[priv->minor]);
-		i2c_write(VIRT_I2C_ADDR, (void *)&shadow, sizeof(shadow));
-		spin_unlock_irqrestore(&gpio_lock, flags);
-		break;
-	case IO_CLRBITS:
-		spin_lock_irqsave(&gpio_lock, flags);
-		/* Clear changeable bits with a 1 in arg. */
-		i2c_read(VIRT_I2C_ADDR, (void *)&shadow, sizeof(shadow));
-		shadow |= ~readl(dir_oe[priv->minor]) &
-			~(arg & changeable_bits[priv->minor]);
-		i2c_write(VIRT_I2C_ADDR, (void *)&shadow, sizeof(shadow));
-		spin_unlock_irqrestore(&gpio_lock, flags);
-		break;
-	case IO_HIGHALARM:
-		/* Set alarm when bits with 1 in arg go high. */
-		priv->highalarm |= arg;
-		break;
-	case IO_LOWALARM:
-		/* Set alarm when bits with 1 in arg go low. */
-		priv->lowalarm |= arg;
-		break;
-	case IO_CLRALARM:
-		/* Clear alarm for bits with 1 in arg. */
-		priv->highalarm &= ~arg;
-		priv->lowalarm  &= ~arg;
-		break;
-	case IO_CFG_WRITE_MODE:
-	{
-		unsigned long dir_shadow;
-		dir_shadow = readl(dir_oe[priv->minor]);
-
-		priv->clk_mask = arg & 0xFF;
-		priv->data_mask = (arg >> 8) & 0xFF;
-		priv->write_msb = (arg >> 16) & 0x01;
-		/* Check if we're allowed to change the bits and
-		 * the direction is correct
-		 */
-		if (!((priv->clk_mask & changeable_bits[priv->minor]) &&
-		      (priv->data_mask & changeable_bits[priv->minor]) &&
-		      (priv->clk_mask & dir_shadow) &&
-		      (priv->data_mask & dir_shadow))) {
-			priv->clk_mask = 0;
-			priv->data_mask = 0;
-			return -EPERM;
-		}
-		break;
-	}
-	case IO_READ_INBITS:
-		/* *arg is result of reading the input pins */
-		val = cached_virtual_gpio_read & ~readl(dir_oe[priv->minor]);
-		if (copy_to_user((void __user *)arg, &val, sizeof(val)))
-			return -EFAULT;
-		return 0;
-
-	case IO_READ_OUTBITS:
-		 /* *arg is result of reading the output shadow */
-		i2c_read(VIRT_I2C_ADDR, (void *)&val, sizeof(val));
-		val &= readl(dir_oe[priv->minor]);
-		if (copy_to_user((void __user *)arg, &val, sizeof(val)))
-			return -EFAULT;
-		break;
-	case IO_SETGET_INPUT:
-	{
-		/* bits set in *arg is set to input,
-		 * *arg updated with current input pins.
-		 */
-		unsigned short input_mask = ~readl(dir_oe[priv->minor]);
-		if (copy_from_user(&val, (void __user *)arg, sizeof(val)))
-			return -EFAULT;
-		val = setget_input(priv, val);
-		if (copy_to_user((void __user *)arg, &val, sizeof(val)))
-			return -EFAULT;
-		if ((input_mask & val) != input_mask) {
-			/* Input pins changed. All ports desired as input
-			 * should be set to logic 1.
-			 */
-			unsigned short change = input_mask ^ val;
-			i2c_read(VIRT_I2C_ADDR, (void *)&shadow,
-				sizeof(shadow));
-			shadow &= ~change;
-			shadow |= val;
-			i2c_write(VIRT_I2C_ADDR, (void *)&shadow,
-				sizeof(shadow));
-		}
-		break;
-	}
-	case IO_SETGET_OUTPUT:
-		/* bits set in *arg is set to output,
-		 * *arg updated with current output pins.
-		 */
-		if (copy_from_user(&val, (void __user *)arg, sizeof(val)))
-			return -EFAULT;
-		val = setget_output(priv, val);
-		if (copy_to_user((void __user *)arg, &val, sizeof(val)))
-			return -EFAULT;
-		break;
-	default:
-		return -EINVAL;
-	} /* switch */
-	return 0;
-}
-#endif /* CONFIG_ETRAX_VIRTUAL_GPIO */
-
-static int gpio_leds_ioctl(unsigned int cmd, unsigned long arg)
-{
-	unsigned char green;
-	unsigned char red;
-
-	switch (_IOC_NR(cmd)) {
-	case IO_LEDACTIVE_SET:
-		green = ((unsigned char) arg) & 1;
-		red   = (((unsigned char) arg) >> 1) & 1;
-		CRIS_LED_ACTIVE_SET_G(green);
-		CRIS_LED_ACTIVE_SET_R(red);
-		break;
-
-	default:
-		return -EINVAL;
-	} /* switch */
-
-	return 0;
-}
-
-static int gpio_pwm_set_mode(unsigned long arg, int pwm_port)
-{
-	int pinmux_pwm = pinmux_pwm0 + pwm_port;
-	int mode;
-	reg_gio_rw_pwm0_ctrl rw_pwm_ctrl = {
-		.ccd_val = 0,
-		.ccd_override = regk_gio_no,
-		.mode = regk_gio_no
-	};
-	int allocstatus;
-
-	if (get_user(mode, &((struct io_pwm_set_mode *) arg)->mode))
-		return -EFAULT;
-	rw_pwm_ctrl.mode = mode;
-	if (mode != PWM_OFF)
-		allocstatus = crisv32_pinmux_alloc_fixed(pinmux_pwm);
-	else
-		allocstatus = crisv32_pinmux_dealloc_fixed(pinmux_pwm);
-	if (allocstatus)
-		return allocstatus;
-	REG_WRITE(reg_gio_rw_pwm0_ctrl, REG_ADDR(gio, regi_gio, rw_pwm0_ctrl) +
-		12 * pwm_port, rw_pwm_ctrl);
-	return 0;
-}
-
-static int gpio_pwm_set_period(unsigned long arg, int pwm_port)
-{
-	struct io_pwm_set_period periods;
-	reg_gio_rw_pwm0_var rw_pwm_widths;
-
-	if (copy_from_user(&periods, (void __user *)arg, sizeof(periods)))
-		return -EFAULT;
-	if (periods.lo > 8191 || periods.hi > 8191)
-		return -EINVAL;
-	rw_pwm_widths.lo = periods.lo;
-	rw_pwm_widths.hi = periods.hi;
-	REG_WRITE(reg_gio_rw_pwm0_var, REG_ADDR(gio, regi_gio, rw_pwm0_var) +
-		12 * pwm_port, rw_pwm_widths);
-	return 0;
-}
-
-static int gpio_pwm_set_duty(unsigned long arg, int pwm_port)
-{
-	unsigned int duty;
-	reg_gio_rw_pwm0_data rw_pwm_duty;
-
-	if (get_user(duty, &((struct io_pwm_set_duty *) arg)->duty))
-		return -EFAULT;
-	if (duty > 255)
-		return -EINVAL;
-	rw_pwm_duty.data = duty;
-	REG_WRITE(reg_gio_rw_pwm0_data, REG_ADDR(gio, regi_gio, rw_pwm0_data) +
-		12 * pwm_port, rw_pwm_duty);
-	return 0;
-}
-
-static int gpio_pwm_ioctl(struct gpio_private *priv, unsigned int cmd,
-	unsigned long arg)
-{
-	int pwm_port = priv->minor - GPIO_MINOR_PWM0;
-
-	switch (_IOC_NR(cmd)) {
-	case IO_PWM_SET_MODE:
-		return gpio_pwm_set_mode(arg, pwm_port);
-	case IO_PWM_SET_PERIOD:
-		return gpio_pwm_set_period(arg, pwm_port);
-	case IO_PWM_SET_DUTY:
-		return gpio_pwm_set_duty(arg, pwm_port);
-	default:
-		return -EINVAL;
-	}
-	return 0;
-}
-
-static const struct file_operations gpio_fops = {
-	.owner		= THIS_MODULE,
-	.poll		= gpio_poll,
-	.unlocked_ioctl	= gpio_ioctl,
-	.write		= gpio_write,
-	.open		= gpio_open,
-	.release	= gpio_release,
-	.llseek		= noop_llseek,
-};
-
-#ifdef CONFIG_ETRAX_VIRTUAL_GPIO
-static void __init virtual_gpio_init(void)
-{
-	reg_gio_rw_intr_cfg intr_cfg;
-	reg_gio_rw_intr_mask intr_mask;
-	unsigned short shadow;
-
-	shadow = ~virtual_rw_pv_oe; /* Input ports should be set to logic 1 */
-	shadow |= CONFIG_ETRAX_DEF_GIO_PV_OUT;
-	i2c_write(VIRT_I2C_ADDR, (void *)&shadow, sizeof(shadow));
-
-	/* Set interrupt mask and on what state the interrupt shall trigger.
-	 * For virtual gpio the interrupt shall trigger on logic '0'.
-	 */
-	intr_cfg = REG_RD(gio, regi_gio, rw_intr_cfg);
-	intr_mask = REG_RD(gio, regi_gio, rw_intr_mask);
-
-	switch (CONFIG_ETRAX_VIRTUAL_GPIO_INTERRUPT_PA_PIN) {
-	case 0:
-		intr_cfg.pa0 = regk_gio_lo;
-		intr_mask.pa0 = regk_gio_yes;
-		break;
-	case 1:
-		intr_cfg.pa1 = regk_gio_lo;
-		intr_mask.pa1 = regk_gio_yes;
-		break;
-	case 2:
-		intr_cfg.pa2 = regk_gio_lo;
-		intr_mask.pa2 = regk_gio_yes;
-		break;
-	case 3:
-		intr_cfg.pa3 = regk_gio_lo;
-		intr_mask.pa3 = regk_gio_yes;
-		break;
-	case 4:
-		intr_cfg.pa4 = regk_gio_lo;
-		intr_mask.pa4 = regk_gio_yes;
-		break;
-	case 5:
-		intr_cfg.pa5 = regk_gio_lo;
-		intr_mask.pa5 = regk_gio_yes;
-		break;
-	case 6:
-		intr_cfg.pa6 = regk_gio_lo;
-		intr_mask.pa6 = regk_gio_yes;
-		break;
-	case 7:
-		intr_cfg.pa7 = regk_gio_lo;
-		intr_mask.pa7 = regk_gio_yes;
-		break;
-	}
-
-	REG_WR(gio, regi_gio, rw_intr_cfg, intr_cfg);
-	REG_WR(gio, regi_gio, rw_intr_mask, intr_mask);
-}
-#endif
-
-/* main driver initialization routine, called from mem.c */
-
-static int __init gpio_init(void)
-{
-	int res;
-
-	printk(KERN_INFO "ETRAX FS GPIO driver v2.7, (c) 2003-2008 "
-		"Axis Communications AB\n");
-
-	/* do the formalities */
-
-	res = register_chrdev(GPIO_MAJOR, gpio_name, &gpio_fops);
-	if (res < 0) {
-		printk(KERN_ERR "gpio: couldn't get a major number.\n");
-		return res;
-	}
-
-	/* Clear all leds */
-	CRIS_LED_NETWORK_GRP0_SET(0);
-	CRIS_LED_NETWORK_GRP1_SET(0);
-	CRIS_LED_ACTIVE_SET(0);
-	CRIS_LED_DISK_READ(0);
-	CRIS_LED_DISK_WRITE(0);
-
-	int res2 = request_irq(GIO_INTR_VECT, gpio_interrupt,
-		IRQF_SHARED, "gpio", &alarmlist);
-	if (res2) {
-		printk(KERN_ERR "err: irq for gpio\n");
-		return res2;
-	}
-
-	/* No IRQs by default. */
-	REG_WR_INT(gio, regi_gio, rw_intr_pins, 0);
-
-#ifdef CONFIG_ETRAX_VIRTUAL_GPIO
-	virtual_gpio_init();
-#endif
-
-	return res;
-}
-
-/* this makes sure that gpio_init is called during kernel boot */
-
-module_init(gpio_init);