+/*
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA.
+ *
+ * Copyright (C) 2005 infineon
+ * Copyright (C) 2007 John Crispin <blogic@openwrt.org>
+ *
+ */
+
+#include <linux/module.h>
+#include <linux/types.h>
+#include <linux/errno.h>
+#include <linux/proc_fs.h>
+#include <linux/init.h>
+#include <linux/ioctl.h>
+#include <asm/semaphore.h>
+#include <asm/uaccess.h>
+#include <asm/danube/danube.h>
+#include <asm/danube/port.h>
+#include "port_defs.h"
+
+#define MAX_PORTS 2 // Number of ports in system
+#define PINS_PER_PORT 16 // Number of available pins per port
+
+static int port_major = 0;
+static int danube_port_pin_usage[MAX_PORTS][PINS_PER_PORT]; // Map for pin usage
+static u32 danube_port_bases[MAX_PORTS]
+ = { DANUBE_GPIO,
+ DANUBE_GPIO + 0x00000030
+}; // Base addresses for ports
+
+static struct semaphore port_sem;
+
+int
+danube_port_reserve_pin (int port, int pin, int module_id)
+{
+ if (port < 0 || pin < 0)
+ return -EINVAL;
+ if (port > MAX_PORTS || pin > PINS_PER_PORT)
+ return -EINVAL;
+
+ if (danube_port_pin_usage[port][pin] == 0) {
+ danube_port_pin_usage[port][pin] = module_id;
+ }
+ else {
+ return -EBUSY;
+ }
+
+ return OK;
+}
+
+int
+danube_port_free_pin (int port, int pin, int module_id)
+{
+
+ if (port < 0 || pin < 0)
+ return -EINVAL;
+ if (port > MAX_PORTS || pin > PINS_PER_PORT)
+ return -EINVAL;
+
+ if (danube_port_pin_usage[port][pin] != module_id)
+ return -EBUSY;
+ danube_port_pin_usage[port][pin] = 0;
+
+ return OK;
+}
+
+int
+danube_port_set_open_drain (int port, int pin, int module_id)
+{
+ u32 reg;
+
+ if (port < 0 || pin < 0)
+ return -EINVAL;
+ if (port > MAX_PORTS || pin > PINS_PER_PORT)
+ return -EINVAL;
+
+ if (danube_port_pin_usage[port][pin] != module_id)
+ return -EBUSY;
+
+ PORT_READ_REG (danube_port_bases[port] + DANUBE_PORT_OD_REG, reg);
+ reg |= (1 << pin);
+ PORT_WRITE_REG (danube_port_bases[port] + DANUBE_PORT_OD_REG, reg);
+
+ return OK;
+}
+
+int
+danube_port_clear_open_drain (int port, int pin, int module_id)
+{
+ u32 reg;
+
+ if (port < 0 || pin < 0)
+ return -EINVAL;
+ if (port > MAX_PORTS || pin > PINS_PER_PORT)
+ return -EINVAL;
+
+ if (danube_port_pin_usage[port][pin] != module_id)
+ return -EBUSY;
+
+ PORT_READ_REG (danube_port_bases[port] + DANUBE_PORT_OD_REG, reg);
+ reg &= ~(1 << pin);
+ PORT_WRITE_REG (danube_port_bases[port] + DANUBE_PORT_OD_REG, reg);
+
+ return OK;
+}
+
+int
+danube_port_set_pudsel (int port, int pin, int module_id)
+{
+ u32 reg;
+
+ if (port < 0 || pin < 0)
+ return -EINVAL;
+ if (port > MAX_PORTS || pin > PINS_PER_PORT)
+ return -EINVAL;
+
+ if (danube_port_pin_usage[port][pin] != module_id)
+ return -EBUSY;
+
+ PORT_READ_REG (danube_port_bases[port] + DANUBE_PORT_PUDSEL_REG, reg);
+ reg |= (1 << pin);
+ PORT_WRITE_REG (danube_port_bases[port] + DANUBE_PORT_PUDSEL_REG,
+ reg);
+
+ return OK;
+}
+
+int
+danube_port_clear_pudsel (int port, int pin, int module_id)
+{
+ u32 reg;
+
+ if (port < 0 || pin < 0)
+ return -EINVAL;
+ if (port > MAX_PORTS || pin > PINS_PER_PORT)
+ return -EINVAL;
+
+ if (danube_port_pin_usage[port][pin] != module_id)
+ return -EBUSY;
+
+ PORT_READ_REG (danube_port_bases[port] + DANUBE_PORT_PUDSEL_REG, reg);
+ reg &= ~(1 << pin);
+ PORT_WRITE_REG (danube_port_bases[port] + DANUBE_PORT_PUDSEL_REG,
+ reg);
+
+ return OK;
+}
+
+int
+danube_port_set_puden (int port, int pin, int module_id)
+{
+ u32 reg;
+
+ if (port < 0 || pin < 0)
+ return -EINVAL;
+ if (port > MAX_PORTS || pin > PINS_PER_PORT)
+ return -EINVAL;
+
+ if (danube_port_pin_usage[port][pin] != module_id)
+ return -EBUSY;
+
+ PORT_READ_REG (danube_port_bases[port] + DANUBE_PORT_PUDEN_REG, reg);
+ reg |= (1 << pin);
+ PORT_WRITE_REG (danube_port_bases[port] + DANUBE_PORT_PUDEN_REG, reg);
+
+ return OK;
+}
+
+int
+danube_port_clear_puden (int port, int pin, int module_id)
+{
+ u32 reg;
+
+ if (port < 0 || pin < 0)
+ return -EINVAL;
+ if (port > MAX_PORTS || pin > PINS_PER_PORT)
+ return -EINVAL;
+
+ if (danube_port_pin_usage[port][pin] != module_id)
+ return -EBUSY;
+
+ PORT_READ_REG (danube_port_bases[port] + DANUBE_PORT_PUDEN_REG, reg);
+ reg &= ~(1 << pin);
+ PORT_WRITE_REG (danube_port_bases[port] + DANUBE_PORT_PUDEN_REG, reg);
+
+ return OK;
+}
+
+int
+danube_port_set_stoff (int port, int pin, int module_id)
+{
+ u32 reg;
+
+ if (port < 0 || pin < 0)
+ return -EINVAL;
+ if (port > MAX_PORTS || pin > PINS_PER_PORT)
+ return -EINVAL;
+
+ if (danube_port_pin_usage[port][pin] != module_id)
+ return -EBUSY;
+
+ PORT_READ_REG (danube_port_bases[port] + DANUBE_PORT_STOFF_REG, reg);
+ reg |= (1 << pin);
+ PORT_WRITE_REG (danube_port_bases[port] + DANUBE_PORT_STOFF_REG, reg);
+
+ return OK;
+}
+
+int
+danube_port_clear_stoff (int port, int pin, int module_id)
+{
+ u32 reg;
+
+ if (port < 0 || pin < 0)
+ return -EINVAL;
+ if (port > MAX_PORTS || pin > PINS_PER_PORT)
+ return -EINVAL;
+
+ if (danube_port_pin_usage[port][pin] != module_id)
+ return -EBUSY;
+
+ PORT_READ_REG (danube_port_bases[port] + DANUBE_PORT_STOFF_REG, reg);
+ reg &= ~(1 << pin);
+ PORT_WRITE_REG (danube_port_bases[port] + DANUBE_PORT_STOFF_REG, reg);
+
+ return OK;
+}
+
+int
+danube_port_set_dir_out (int port, int pin, int module_id)
+{
+ u32 reg;
+
+ if (port < 0 || pin < 0)
+ return -EINVAL;
+ if (port > MAX_PORTS || pin > PINS_PER_PORT)
+ return -EINVAL;
+
+ if (danube_port_pin_usage[port][pin] != module_id)
+ return -EBUSY;
+
+ PORT_READ_REG (danube_port_bases[port] + DANUBE_PORT_DIR_REG, reg);
+ reg |= (1 << pin);
+ PORT_WRITE_REG (danube_port_bases[port] + DANUBE_PORT_DIR_REG, reg);
+
+ return OK;
+}
+
+int
+danube_port_set_dir_in (int port, int pin, int module_id)
+{
+ u32 reg;
+
+ if (port < 0 || pin < 0)
+ return -EINVAL;
+ if (port > MAX_PORTS || pin > PINS_PER_PORT)
+ return -EINVAL;
+
+ if (danube_port_pin_usage[port][pin] != module_id)
+ return -EBUSY;
+
+ PORT_READ_REG (danube_port_bases[port] + DANUBE_PORT_DIR_REG, reg);
+ reg &= ~(1 << pin);
+ PORT_WRITE_REG (danube_port_bases[port] + DANUBE_PORT_DIR_REG, reg);
+
+ return OK;
+}
+
+int
+danube_port_set_output (int port, int pin, int module_id)
+{
+ u32 reg;
+
+ if (port < 0 || pin < 0)
+ return -EINVAL;
+ if (port > MAX_PORTS || pin > PINS_PER_PORT)
+ return -EINVAL;
+
+ if (danube_port_pin_usage[port][pin] != module_id)
+ return -EBUSY;
+
+ PORT_READ_REG (danube_port_bases[port] + DANUBE_PORT_OUT_REG, reg);
+ reg |= (1 << pin);
+ PORT_WRITE_REG (danube_port_bases[port] + DANUBE_PORT_OUT_REG, reg);
+
+ return OK;
+}
+
+int
+danube_port_clear_output (int port, int pin, int module_id)
+{
+ u32 reg;
+
+ if (port < 0 || pin < 0)
+ return -EINVAL;
+ if (port > MAX_PORTS || pin > PINS_PER_PORT)
+ return -EINVAL;
+
+ if (danube_port_pin_usage[port][pin] != module_id)
+ return -EBUSY;
+
+ PORT_READ_REG (danube_port_bases[port] + DANUBE_PORT_OUT_REG, reg);
+ reg &= ~(1 << pin);
+ PORT_WRITE_REG (danube_port_bases[port] + DANUBE_PORT_OUT_REG, reg);
+
+ return OK;
+}
+
+int
+danube_port_get_input (int port, int pin, int module_id)
+{
+ u32 reg;
+
+ if (port < 0 || pin < 0)
+ return -EINVAL;
+ if (port > MAX_PORTS || pin > PINS_PER_PORT)
+ return -EINVAL;
+
+ if (danube_port_pin_usage[port][pin] != module_id)
+ return -EBUSY;
+
+ PORT_READ_REG (danube_port_bases[port] + DANUBE_PORT_IN_REG, reg);
+ reg &= (1 << pin);
+ if (reg == 0x00)
+ return 0;
+ else
+ return 1;
+}
+
+int
+danube_port_set_altsel0 (int port, int pin, int module_id)
+{
+ u32 reg;
+
+ if (port < 0 || pin < 0)
+ return -EINVAL;
+ if (port > MAX_PORTS || pin > PINS_PER_PORT)
+ return -EINVAL;
+
+ if (danube_port_pin_usage[port][pin] != module_id)
+ return -EBUSY;
+
+ PORT_READ_REG (danube_port_bases[port] + DANUBE_PORT_ALTSEL0_REG,
+ reg);
+ reg |= (1 << pin);
+ PORT_WRITE_REG (danube_port_bases[port] + DANUBE_PORT_ALTSEL0_REG,
+ reg);
+
+ return OK;
+}
+
+int
+danube_port_clear_altsel0 (int port, int pin, int module_id)
+{
+ u32 reg;
+
+ if (port < 0 || pin < 0)
+ return -EINVAL;
+ if (port > MAX_PORTS || pin > PINS_PER_PORT)
+ return -EINVAL;
+
+ if (danube_port_pin_usage[port][pin] != module_id)
+ return -EBUSY;
+
+ PORT_READ_REG (danube_port_bases[port] + DANUBE_PORT_ALTSEL0_REG,
+ reg);
+ reg &= ~(1 << pin);
+ PORT_WRITE_REG (danube_port_bases[port] + DANUBE_PORT_ALTSEL0_REG,
+ reg);
+
+ return OK;
+}
+
+int
+danube_port_set_altsel1 (int port, int pin, int module_id)
+{
+ u32 reg;
+
+ if (port < 0 || pin < 0)
+ return -EINVAL;
+ if (port > MAX_PORTS || pin > PINS_PER_PORT)
+ return -EINVAL;
+
+ if (danube_port_pin_usage[port][pin] != module_id)
+ return -EBUSY;
+
+ PORT_READ_REG (danube_port_bases[port] + DANUBE_PORT_ALTSEL1_REG,
+ reg);
+ reg |= (1 << pin);
+ PORT_WRITE_REG (danube_port_bases[port] + DANUBE_PORT_ALTSEL1_REG,
+ reg);
+
+ return OK;
+}
+
+int
+danube_port_clear_altsel1 (int port, int pin, int module_id)
+{
+ u32 reg;
+
+ if (port < 0 || pin < 0)
+ return -EINVAL;
+ if (port > MAX_PORTS || pin > PINS_PER_PORT)
+ return -EINVAL;
+
+ if (danube_port_pin_usage[port][pin] != module_id)
+ return -EBUSY;
+
+ PORT_READ_REG (danube_port_bases[port] + DANUBE_PORT_ALTSEL1_REG,
+ reg);
+ reg &= ~(1 << pin);
+ PORT_WRITE_REG (danube_port_bases[port] + DANUBE_PORT_ALTSEL1_REG,
+ reg);
+
+ return OK;
+}
+
+int
+danube_port_read_procmem (char *buf, char **start, off_t offset, int count,
+ int *eof, void *data)
+{
+ long len = 0;
+ int t = 0;
+ u32 bit = 0;
+ u32 reg = 0;
+
+ len = sprintf (buf, "\nDanube Port Settings\n");
+
+ len = len + sprintf (buf + len,
+ " 3 2 1 0\n");
+ len = len + sprintf (buf + len,
+ " 10987654321098765432109876543210\n");
+ len = len + sprintf (buf + len,
+ "----------------------------------------\n");
+
+ len = len + sprintf (buf + len, "\nP0-OUT: ");
+ PORT_READ_REG (DANUBE_GPIO_P0_OUT, reg);
+ bit = 0x80000000;
+ for (t = 0; t < 32; t++) {
+ if ((reg & bit) > 0)
+ len = len + sprintf (buf + len, "X");
+ else
+ len = len + sprintf (buf + len, " ");
+ bit = bit >> 1;
+ }
+
+ len = len + sprintf (buf + len, "\nP1-OUT: ");
+ PORT_READ_REG (DANUBE_GPIO_P1_OUT, reg);
+ bit = 0x80000000;
+ for (t = 0; t < 32; t++) {
+ if ((reg & bit) > 0)
+ len = len + sprintf (buf + len, "X");
+ else
+ len = len + sprintf (buf + len, " ");
+ bit = bit >> 1;
+ }
+
+ len = len + sprintf (buf + len, "\nP0-IN: ");
+ PORT_READ_REG (DANUBE_GPIO_P0_IN, reg);
+ bit = 0x80000000;
+ for (t = 0; t < 32; t++) {
+ if ((reg & bit) > 0)
+ len = len + sprintf (buf + len, "X");
+ else
+ len = len + sprintf (buf + len, " ");
+ bit = bit >> 1;
+ }
+
+ len = len + sprintf (buf + len, "\nP1-IN: ");
+ PORT_READ_REG (DANUBE_GPIO_P1_IN, reg);
+ bit = 0x80000000;
+ for (t = 0; t < 32; t++) {
+ if ((reg & bit) > 0)
+ len = len + sprintf (buf + len, "X");
+ else
+ len = len + sprintf (buf + len, " ");
+ bit = bit >> 1;
+ }
+
+ len = len + sprintf (buf + len, "\nP0-DIR: ");
+ PORT_READ_REG (DANUBE_GPIO_P0_DIR, reg);
+ bit = 0x80000000;
+ for (t = 0; t < 32; t++) {
+ if ((reg & bit) > 0)
+ len = len + sprintf (buf + len, "X");
+ else
+ len = len + sprintf (buf + len, " ");
+ bit = bit >> 1;
+ }
+
+ len = len + sprintf (buf + len, "\nP1-DIR: ");
+ PORT_READ_REG (DANUBE_GPIO_P1_DIR, reg);
+ bit = 0x80000000;
+ for (t = 0; t < 32; t++) {
+ if ((reg & bit) > 0)
+ len = len + sprintf (buf + len, "X");
+ else
+ len = len + sprintf (buf + len, " ");
+ bit = bit >> 1;
+ }
+
+ len = len + sprintf (buf + len, "\nP0-STO: ");
+ PORT_READ_REG (DANUBE_GPIO_P0_STOFF, reg);
+ bit = 0x80000000;
+ for (t = 0; t < 32; t++) {
+ if ((reg & bit) > 0)
+ len = len + sprintf (buf + len, "X");
+ else
+ len = len + sprintf (buf + len, " ");
+ bit = bit >> 1;
+ }
+
+ len = len + sprintf (buf + len, "\nP1-STO: ");
+ PORT_READ_REG (DANUBE_GPIO_P1_STOFF, reg);
+ bit = 0x80000000;
+ for (t = 0; t < 32; t++) {
+ if ((reg & bit) > 0)
+ len = len + sprintf (buf + len, "X");
+ else
+ len = len + sprintf (buf + len, " ");
+ bit = bit >> 1;
+ }
+
+ len = len + sprintf (buf + len, "\nP0-PUDE:");
+ PORT_READ_REG (DANUBE_GPIO_P0_PUDEN, reg);
+ bit = 0x80000000;
+ for (t = 0; t < 32; t++) {
+ if ((reg & bit) > 0)
+ len = len + sprintf (buf + len, "X");
+ else
+ len = len + sprintf (buf + len, " ");
+ bit = bit >> 1;
+ }
+
+ len = len + sprintf (buf + len, "\nP1-PUDE:");
+ PORT_READ_REG (DANUBE_GPIO_P1_PUDEN, reg);
+ bit = 0x80000000;
+ for (t = 0; t < 32; t++) {
+ if ((reg & bit) > 0)
+ len = len + sprintf (buf + len, "X");
+ else
+ len = len + sprintf (buf + len, " ");
+ bit = bit >> 1;
+ }
+
+ len = len + sprintf (buf + len, "\nP0-OD: ");
+ PORT_READ_REG (DANUBE_GPIO_P0_OD, reg);
+ bit = 0x80000000;
+ for (t = 0; t < 32; t++) {
+ if ((reg & bit) > 0)
+ len = len + sprintf (buf + len, "X");
+ else
+ len = len + sprintf (buf + len, " ");
+ bit = bit >> 1;
+ }
+
+ len = len + sprintf (buf + len, "\nP1-OD: ");
+ PORT_READ_REG (DANUBE_GPIO_P1_OD, reg);
+ bit = 0x80000000;
+ for (t = 0; t < 32; t++) {
+ if ((reg & bit) > 0)
+ len = len + sprintf (buf + len, "X");
+ else
+ len = len + sprintf (buf + len, " ");
+ bit = bit >> 1;
+ }
+
+ len = len + sprintf (buf + len, "\nP0-PUDS:");
+ PORT_READ_REG (DANUBE_GPIO_P0_PUDSEL, reg);
+ bit = 0x80000000;
+ for (t = 0; t < 32; t++) {
+ if ((reg & bit) > 0)
+ len = len + sprintf (buf + len, "X");
+ else
+ len = len + sprintf (buf + len, " ");
+ bit = bit >> 1;
+ }
+
+ len = len + sprintf (buf + len, "\nP1-PUDS:");
+ PORT_READ_REG (DANUBE_GPIO_P1_PUDSEL, reg);
+ bit = 0x80000000;
+ for (t = 0; t < 32; t++) {
+ if ((reg & bit) > 0)
+ len = len + sprintf (buf + len, "X");
+ else
+ len = len + sprintf (buf + len, " ");
+ bit = bit >> 1;
+ }
+
+ len = len + sprintf (buf + len, "\nP0_ALT0:");
+ PORT_READ_REG (DANUBE_GPIO_P0_ALTSEL0, reg);
+ bit = 0x80000000;
+ for (t = 0; t < 32; t++) {
+ if ((reg & bit) > 0)
+ len = len + sprintf (buf + len, "X");
+ else
+ len = len + sprintf (buf + len, " ");
+ bit = bit >> 1;
+ }
+
+ len = len + sprintf (buf + len, "\nP0_ALT1:");
+ PORT_READ_REG (DANUBE_GPIO_P0_ALTSEL1, reg);
+ bit = 0x80000000;
+ for (t = 0; t < 32; t++) {
+ if ((reg & bit) > 0)
+ len = len + sprintf (buf + len, "X");
+ else
+ len = len + sprintf (buf + len, " ");
+ bit = bit >> 1;
+ }
+
+ len = len + sprintf (buf + len, "\nP1_ALT0:");
+ PORT_READ_REG (DANUBE_GPIO_P1_ALTSEL0, reg);
+ bit = 0x80000000;
+ for (t = 0; t < 32; t++) {
+ if ((reg & bit) > 0)
+ len = len + sprintf (buf + len, "X");
+ else
+ len = len + sprintf (buf + len, " ");
+ bit = bit >> 1;
+ }
+
+ len = len + sprintf (buf + len, "\nP1_ALT1:");
+ PORT_READ_REG (DANUBE_GPIO_P1_ALTSEL1, reg);
+ bit = 0x80000000;
+ for (t = 0; t < 32; t++) {
+ if ((reg & bit) > 0)
+ len = len + sprintf (buf + len, "X");
+ else
+ len = len + sprintf (buf + len, " ");
+ bit = bit >> 1;
+ }
+
+ len = len + sprintf (buf + len, "\n\n");
+
+ *eof = 1; // No more data available
+ return len;
+}
+
+static int
+danube_port_open (struct inode *inode, struct file *filep)
+{
+ return OK;
+}
+
+static int
+danube_port_release (struct inode *inode, struct file *filelp)
+{
+ return OK;
+}
+
+static int
+danube_port_ioctl (struct inode *inode, struct file *filp,
+ unsigned int cmd, unsigned long arg)
+{
+ int ret = 0;
+ volatile struct danube_port_ioctl_parm parm;
+
+ if (_IOC_TYPE (cmd) != DANUBE_PORT_IOC_MAGIC)
+ return -EINVAL;
+
+ if (_IOC_DIR (cmd) & _IOC_WRITE) {
+ if (!access_ok
+ (VERIFY_READ, arg,
+ sizeof (struct danube_port_ioctl_parm)))
+ return -EFAULT;
+ ret = copy_from_user ((void *) &parm, (void *) arg,
+ sizeof (struct danube_port_ioctl_parm));
+ }
+ if (_IOC_DIR (cmd) & _IOC_READ) {
+ if (!access_ok
+ (VERIFY_WRITE, arg,
+ sizeof (struct danube_port_ioctl_parm)))
+ return -EFAULT;
+ }
+
+ if (down_trylock (&port_sem) != 0)
+ return -EBUSY;
+
+ switch (cmd) {
+ case DANUBE_PORT_IOCOD:
+ if (parm.value == 0x00) {
+ PORT_IOC_CALL (ret, parm.port, parm.pin,
+ danube_port_clear_open_drain);
+ }
+ else {
+ PORT_IOC_CALL (ret, parm.port, parm.pin,
+ danube_port_set_open_drain);
+ }
+ break;
+ case DANUBE_PORT_IOCPUDSEL:
+ if (parm.value == 0x00) {
+ PORT_IOC_CALL (ret, parm.port, parm.pin,
+ danube_port_clear_pudsel);
+ }
+ else {
+ PORT_IOC_CALL (ret, parm.port, parm.pin,
+ danube_port_set_pudsel);
+ }
+ break;
+ case DANUBE_PORT_IOCPUDEN:
+ if (parm.value == 0x00) {
+ PORT_IOC_CALL (ret, parm.port, parm.pin,
+ danube_port_clear_puden);
+ }
+ else {
+ PORT_IOC_CALL (ret, parm.port, parm.pin,
+ danube_port_set_puden);
+ }
+ break;
+ case DANUBE_PORT_IOCSTOFF:
+ if (parm.value == 0x00) {
+ PORT_IOC_CALL (ret, parm.port, parm.pin,
+ danube_port_clear_stoff);
+ }
+ else {
+ PORT_IOC_CALL (ret, parm.port, parm.pin,
+ danube_port_set_stoff);
+ }
+ break;
+ case DANUBE_PORT_IOCDIR:
+ if (parm.value == 0x00) {
+ PORT_IOC_CALL (ret, parm.port, parm.pin,
+ danube_port_set_dir_in);
+ }
+ else {
+ PORT_IOC_CALL (ret, parm.port, parm.pin,
+ danube_port_set_dir_out);
+ }
+ break;
+ case DANUBE_PORT_IOCOUTPUT:
+ if (parm.value == 0x00) {
+ PORT_IOC_CALL (ret, parm.port, parm.pin,
+ danube_port_clear_output);
+ }
+ else {
+ PORT_IOC_CALL (ret, parm.port, parm.pin,
+ danube_port_set_output);
+ }
+ break;
+ case DANUBE_PORT_IOCALTSEL0:
+ if (parm.value == 0x00) {
+ PORT_IOC_CALL (ret, parm.port, parm.pin,
+ danube_port_clear_altsel0);
+ }
+ else {
+ PORT_IOC_CALL (ret, parm.port, parm.pin,
+ danube_port_set_altsel0);
+ }
+ break;
+ case DANUBE_PORT_IOCALTSEL1:
+ if (parm.value == 0x00) {
+ PORT_IOC_CALL (ret, parm.port, parm.pin,
+ danube_port_clear_altsel1);
+ }
+ else {
+ PORT_IOC_CALL (ret, parm.port, parm.pin,
+ danube_port_set_altsel1);
+ }
+ break;
+ case DANUBE_PORT_IOCINPUT:
+ ret = danube_port_reserve_pin (parm.port, parm.pin,
+ PORT_MODULE_ID);
+ if (ret == 0)
+ parm.value =
+ danube_port_get_input (parm.port, parm.pin,
+ PORT_MODULE_ID);
+ ret = danube_port_free_pin (parm.port, parm.pin,
+ PORT_MODULE_ID);
+ copy_to_user ((void *) arg, (void *) &parm,
+ sizeof (struct danube_port_ioctl_parm));
+ break;
+ default:
+ ret = -EINVAL;
+ }
+
+ up (&port_sem);
+
+ return ret;
+}
+
+static struct file_operations port_fops = {
+ open:danube_port_open,
+ release:danube_port_release,
+ ioctl:danube_port_ioctl
+};
+
+int __init
+danube_port_init (void)
+{
+ int t = 0;
+ int i = 0;
+ int err = 0;
+ u32 pins = 0;
+
+ printk ("Danube Port Initialization\n");
+
+ sema_init (&port_sem, 1);
+
+ /* Check ports for available pins */
+ for (t = 0; t < MAX_PORTS; t++) {
+ for (i = 0; i < PINS_PER_PORT; i++)
+ danube_port_pin_usage[t][i] = 0;
+ }
+
+ /* register port device */
+ err = register_chrdev (0, "danube-port", &port_fops);
+ if (err > 0)
+ port_major = err;
+ else {
+ printk ("danube-port: Error! Could not register port device. #%d\n", err);
+ return err;
+ }
+
+ /* Create proc file */
+ create_proc_read_entry ("driver/danube_port", 0, NULL,
+ danube_port_read_procmem, NULL);
+
+ return OK;
+}
+
+module_init (danube_port_init);
+
+EXPORT_SYMBOL (danube_port_reserve_pin);
+EXPORT_SYMBOL (danube_port_free_pin);
+EXPORT_SYMBOL (danube_port_set_open_drain);
+EXPORT_SYMBOL (danube_port_clear_open_drain);
+EXPORT_SYMBOL (danube_port_set_pudsel);
+EXPORT_SYMBOL (danube_port_clear_pudsel);
+EXPORT_SYMBOL (danube_port_set_puden);
+EXPORT_SYMBOL (danube_port_clear_puden);
+EXPORT_SYMBOL (danube_port_set_stoff);
+EXPORT_SYMBOL (danube_port_clear_stoff);
+EXPORT_SYMBOL (danube_port_set_dir_out);
+EXPORT_SYMBOL (danube_port_set_dir_in);
+EXPORT_SYMBOL (danube_port_set_output);
+EXPORT_SYMBOL (danube_port_clear_output);
+EXPORT_SYMBOL (danube_port_get_input);
+
+EXPORT_SYMBOL (danube_port_set_altsel0);
+EXPORT_SYMBOL (danube_port_clear_altsel0);
+EXPORT_SYMBOL (danube_port_set_altsel1);
+EXPORT_SYMBOL (danube_port_clear_altsel1);
projects / openwrt / svn-archive / archive.git / commitdiff