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authorJohn Crispin <john@openwrt.org>2007-12-22 14:00:25 +0000
committerJohn Crispin <john@openwrt.org>2007-12-22 14:00:25 +0000
commitd6211ec9e6a5c600c5246a88288fc1ccf5cd06da (patch)
treef9a9077f063d35a82d7183192d0060f4850fc483 /target/linux/ifxmips/files/drivers/char/danube_gpio.c
parentede75452000b57a7eee95be4469690dae165d1bd (diff)
downloadupstream-d6211ec9e6a5c600c5246a88288fc1ccf5cd06da.tar.gz
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more danube 2 ifxmips transitions
SVN-Revision: 9826
Diffstat (limited to 'target/linux/ifxmips/files/drivers/char/danube_gpio.c')
-rw-r--r--target/linux/ifxmips/files/drivers/char/danube_gpio.c442
1 files changed, 0 insertions, 442 deletions
diff --git a/target/linux/ifxmips/files/drivers/char/danube_gpio.c b/target/linux/ifxmips/files/drivers/char/danube_gpio.c
deleted file mode 100644
index 6ac9ec6b17..0000000000
--- a/target/linux/ifxmips/files/drivers/char/danube_gpio.c
+++ /dev/null
@@ -1,442 +0,0 @@
-/*
- * 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/ifxmips/ifxmips.h>
-#include <asm/ifxmips/ifxmips_ioctl.h>
-
-#define MAX_PORTS 2
-#define PINS_PER_PORT 16
-
-static unsigned int ifxmips_gpio_major = 0;
-
-/* TODO do we need this ? */
-static struct semaphore port_sem;
-
-/* TODO do we really need this ? return in a define is forbidden by coding style */
-#define IFXMIPS_GPIO_SANITY {if (port > MAX_PORTS || pin > PINS_PER_PORT) return -EINVAL; }
-
-int
-ifxmips_port_reserve_pin (unsigned int port, unsigned int pin)
-{
- IFXMIPS_GPIO_SANITY;
- printk("%s : call to obseleted function\n", __func__);
-
- return 0;
-}
-EXPORT_SYMBOL(ifxmips_port_reserve_pin);
-
-int
-ifxmips_port_free_pin (unsigned int port, unsigned int pin)
-{
- IFXMIPS_GPIO_SANITY;
- printk("%s : call to obseleted function\n", __func__);
-
- return 0;
-}
-EXPORT_SYMBOL(ifxmips_port_free_pin);
-
-int
-ifxmips_port_set_open_drain (unsigned int port, unsigned int pin)
-{
- IFXMIPS_GPIO_SANITY;
- writel(readl(IFXMIPS_GPIO_P0_OD + (port * 0x30)) | (1 << pin), IFXMIPS_GPIO_P0_OD);
-
- return 0;
-}
-EXPORT_SYMBOL(ifxmips_port_set_open_drain);
-
-int
-ifxmips_port_clear_open_drain (unsigned int port, unsigned int pin)
-{
- IFXMIPS_GPIO_SANITY;
- writel(readl(IFXMIPS_GPIO_P0_OD + (port * 0x30)) & ~(1 << pin), IFXMIPS_GPIO_P0_OD);
-
- return 0;
-}
-EXPORT_SYMBOL(ifxmips_port_clear_open_drain);
-
-int
-ifxmips_port_set_pudsel (unsigned int port, unsigned int pin)
-{
- IFXMIPS_GPIO_SANITY;
- writel(readl(IFXMIPS_GPIO_P0_PUDSEL + (port * 0x30)) | (1 << pin), IFXMIPS_GPIO_P0_PUDSEL);
-
- return 0;
-}
-EXPORT_SYMBOL(ifxmips_port_set_pudsel);
-
-int
-ifxmips_port_clear_pudsel (unsigned int port, unsigned int pin)
-{
- IFXMIPS_GPIO_SANITY;
- writel(readl(IFXMIPS_GPIO_P0_PUDSEL + (port * 0x30)) & ~(1 << pin), IFXMIPS_GPIO_P0_PUDSEL);
-
- return 0;
-}
-EXPORT_SYMBOL(ifxmips_port_clear_pudsel);
-
-int
-ifxmips_port_set_puden (unsigned int port, unsigned int pin)
-{
- IFXMIPS_GPIO_SANITY;
- writel(readl(IFXMIPS_GPIO_P0_PUDEN + (port * 0x30)) | (1 << pin), IFXMIPS_GPIO_P0_PUDEN);
-
- return 0;
-}
-EXPORT_SYMBOL(ifxmips_port_set_puden);
-
-int
-ifxmips_port_clear_puden (unsigned int port, unsigned int pin)
-{
- IFXMIPS_GPIO_SANITY;
- writel(readl(IFXMIPS_GPIO_P0_PUDEN + (port * 0x30)) & ~(1 << pin), IFXMIPS_GPIO_P0_PUDEN);
-
- return 0;
-}
-EXPORT_SYMBOL(ifxmips_port_clear_puden);
-
-int
-ifxmips_port_set_stoff (unsigned int port, unsigned int pin)
-{
- IFXMIPS_GPIO_SANITY;
- writel(readl(IFXMIPS_GPIO_P0_STOFF + (port * 0x30)) | (1 << pin), IFXMIPS_GPIO_P0_STOFF);
-
- return 0;
-}
-EXPORT_SYMBOL(ifxmips_port_set_stoff);
-
-int
-ifxmips_port_clear_stoff (unsigned int port, unsigned int pin)
-{
- IFXMIPS_GPIO_SANITY;
- writel(readl(IFXMIPS_GPIO_P0_STOFF + (port * 0x30)) & ~(1 << pin), IFXMIPS_GPIO_P0_STOFF);
-
- return 0;
-}
-EXPORT_SYMBOL(ifxmips_port_clear_stoff);
-
-int
-ifxmips_port_set_dir_out (unsigned int port, unsigned int pin)
-{
- IFXMIPS_GPIO_SANITY;
- writel(readl(IFXMIPS_GPIO_P0_DIR + (port * 0x30)) | (1 << pin), IFXMIPS_GPIO_P0_DIR);
-
- return 0;
-}
-EXPORT_SYMBOL(ifxmips_port_set_dir_out);
-
-int
-ifxmips_port_set_dir_in (unsigned int port, unsigned int pin)
-{
- IFXMIPS_GPIO_SANITY;
- writel(readl(IFXMIPS_GPIO_P0_DIR + (port * 0x30)) & ~(1 << pin), IFXMIPS_GPIO_P0_DIR);
-
- return 0;
-}
-EXPORT_SYMBOL(ifxmips_port_set_dir_in);
-
-int
-ifxmips_port_set_output (unsigned int port, unsigned int pin)
-{
- IFXMIPS_GPIO_SANITY;
- writel(readl(IFXMIPS_GPIO_P0_OUT + (port * 0x30)) | (1 << pin), IFXMIPS_GPIO_P0_OUT);
-
- return 0;
-}
-EXPORT_SYMBOL(ifxmips_port_set_output);
-
-int
-ifxmips_port_clear_output (unsigned int port, unsigned int pin)
-{
- IFXMIPS_GPIO_SANITY;
- writel(readl(IFXMIPS_GPIO_P0_OUT + (port * 0x30)) & ~(1 << pin), IFXMIPS_GPIO_P0_OUT);
-
- return 0;
-}
-EXPORT_SYMBOL(ifxmips_port_clear_output);
-
-int
-ifxmips_port_get_input (unsigned int port, unsigned int pin)
-{
- IFXMIPS_GPIO_SANITY;
-
- if (readl(IFXMIPS_GPIO_P0_IN + (port * 0x30)) & (1 << pin))
- return 0;
- else
- return 1;
-}
-EXPORT_SYMBOL(ifxmips_port_get_input);
-
-int
-ifxmips_port_set_altsel0 (unsigned int port, unsigned int pin)
-{
- IFXMIPS_GPIO_SANITY;
- writel(readl(IFXMIPS_GPIO_P0_ALTSEL0 + (port * 0x30)) | (1 << pin), IFXMIPS_GPIO_P0_ALTSEL0);
-
- return 0;
-}
-EXPORT_SYMBOL(ifxmips_port_set_altsel0);
-
-int
-ifxmips_port_clear_altsel0 (unsigned int port, unsigned int pin)
-{
- IFXMIPS_GPIO_SANITY;
- writel(readl(IFXMIPS_GPIO_P0_ALTSEL0 + (port * 0x30)) & ~(1 << pin), IFXMIPS_GPIO_P0_ALTSEL0);
-
- return 0;
-}
-EXPORT_SYMBOL(ifxmips_port_clear_altsel0);
-
-int
-ifxmips_port_set_altsel1 (unsigned int port, unsigned int pin)
-{
- IFXMIPS_GPIO_SANITY;
- writel(readl(IFXMIPS_GPIO_P0_ALTSEL1 + (port * 0x30)) | (1 << pin), IFXMIPS_GPIO_P0_ALTSEL1);
-
- return 0;
-}
-EXPORT_SYMBOL(ifxmips_port_set_altsel1);
-
-int
-ifxmips_port_clear_altsel1 (unsigned int port, unsigned int pin)
-{
- IFXMIPS_GPIO_SANITY;
- writel(readl(IFXMIPS_GPIO_P0_ALTSEL1 + (port * 0x30)) & ~(1 << pin), IFXMIPS_GPIO_P0_ALTSEL1);
-
- return 0;
-}
-EXPORT_SYMBOL(ifxmips_port_clear_altsel1);
-
-long ifxmips_port_read_procmem_helper(char* tag, u32* in_reg, char *buf)
-{
- u32 reg, bit = 0;
- unsigned int len, t;
-
- len = sprintf(buf, "\n%s: ", tag);
- reg = readl(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;
- }
-
- return len;
-}
-
-int
-ifxmips_port_read_procmem (char *buf, char **start, off_t offset, int count,
- int *eof, void *data)
-{
- long len = sprintf (buf, "\nIFXMips Port Settings\n");
-
- len += sprintf (buf + len,
- " 3 2 1 0\n");
- len += sprintf (buf + len,
- " 10987654321098765432109876543210\n");
- len += sprintf (buf + len,
- "----------------------------------------\n");
-
- len += ifxmips_port_read_procmem_helper("P0-OUT", IFXMIPS_GPIO_P0_OUT, &buf[len]);
- len += ifxmips_port_read_procmem_helper("P1-OUT", IFXMIPS_GPIO_P1_OUT, &buf[len]);
- len += ifxmips_port_read_procmem_helper("P0-IN ", IFXMIPS_GPIO_P0_IN, &buf[len]);
- len += ifxmips_port_read_procmem_helper("P1-IN ", IFXMIPS_GPIO_P1_IN, &buf[len]);
- len += ifxmips_port_read_procmem_helper("P0-DIR", IFXMIPS_GPIO_P0_DIR, &buf[len]);
- len += ifxmips_port_read_procmem_helper("P1-DIR", IFXMIPS_GPIO_P1_DIR, &buf[len]);
- len += ifxmips_port_read_procmem_helper("P0-STO ", IFXMIPS_GPIO_P0_STOFF, &buf[len]);
- len += ifxmips_port_read_procmem_helper("P1-STO ", IFXMIPS_GPIO_P1_STOFF, &buf[len]);
- len += ifxmips_port_read_procmem_helper("P0-PUDE", IFXMIPS_GPIO_P0_PUDEN, &buf[len]);
- len += ifxmips_port_read_procmem_helper("P1-PUDE", IFXMIPS_GPIO_P1_PUDEN, &buf[len]);
- len += ifxmips_port_read_procmem_helper("P0-OD ", IFXMIPS_GPIO_P0_OD, &buf[len]);
- len += ifxmips_port_read_procmem_helper("P1-OD ", IFXMIPS_GPIO_P1_OD, &buf[len]);
- len += ifxmips_port_read_procmem_helper("P0-PUDS", IFXMIPS_GPIO_P0_PUDSEL, &buf[len]);
- len += ifxmips_port_read_procmem_helper("P1-PUDS", IFXMIPS_GPIO_P1_PUDSEL, &buf[len]);
- len += ifxmips_port_read_procmem_helper("P0-ALT0", IFXMIPS_GPIO_P0_ALTSEL0, &buf[len]);
- len += ifxmips_port_read_procmem_helper("P1-ALT0", IFXMIPS_GPIO_P1_ALTSEL0, &buf[len]);
- len += ifxmips_port_read_procmem_helper("P0-ALT1", IFXMIPS_GPIO_P0_ALTSEL1, &buf[len]);
- len += ifxmips_port_read_procmem_helper("P1-ALT1", IFXMIPS_GPIO_P1_ALTSEL1, &buf[len]);
- len = len + sprintf (buf + len, "\n\n");
-
- *eof = 1;
-
- return len;
-}
-
-static int
-ifxmips_port_open (struct inode *inode, struct file *filep)
-{
- return 0;
-}
-
-static int
-ifxmips_port_release (struct inode *inode, struct file *filelp)
-{
- return 0;
-}
-
-static int
-ifxmips_port_ioctl (struct inode *inode, struct file *filp,
- unsigned int cmd, unsigned long arg)
-{
- int ret = 0;
- volatile struct ifxmips_port_ioctl_parm parm;
-
- if (_IOC_TYPE (cmd) != IFXMIPS_PORT_IOC_MAGIC)
- return -EINVAL;
-
- if (_IOC_DIR (cmd) & _IOC_WRITE) {
- if (!access_ok
- (VERIFY_READ, arg,
- sizeof (struct ifxmips_port_ioctl_parm)))
- return -EFAULT;
- ret = copy_from_user ((void *) &parm, (void *) arg,
- sizeof (struct ifxmips_port_ioctl_parm));
- }
- if (_IOC_DIR (cmd) & _IOC_READ) {
- if (!access_ok
- (VERIFY_WRITE, arg,
- sizeof (struct ifxmips_port_ioctl_parm)))
- return -EFAULT;
- }
-
- if (down_trylock (&port_sem) != 0)
- return -EBUSY;
-
- switch (cmd) {
- case IFXMIPS_PORT_IOCOD:
- if (parm.value == 0x00)
- ifxmips_port_clear_open_drain(parm.port, parm.pin);
- else
- ifxmips_port_set_open_drain(parm.port, parm.pin);
- break;
-
- case IFXMIPS_PORT_IOCPUDSEL:
- if (parm.value == 0x00)
- ifxmips_port_clear_pudsel(parm.port, parm.pin);
- else
- ifxmips_port_set_pudsel(parm.port, parm.pin);
- break;
-
- case IFXMIPS_PORT_IOCPUDEN:
- if (parm.value == 0x00)
- ifxmips_port_clear_puden(parm.port, parm.pin);
- else
- ifxmips_port_set_puden(parm.port, parm.pin);
- break;
-
- case IFXMIPS_PORT_IOCSTOFF:
- if (parm.value == 0x00)
- ifxmips_port_clear_stoff(parm.port, parm.pin);
- else
- ifxmips_port_set_stoff(parm.port, parm.pin);
- break;
-
- case IFXMIPS_PORT_IOCDIR:
- if (parm.value == 0x00)
- ifxmips_port_set_dir_in(parm.port, parm.pin);
- else
- ifxmips_port_set_dir_out(parm.port, parm.pin);
- break;
-
- case IFXMIPS_PORT_IOCOUTPUT:
- if (parm.value == 0x00)
- ifxmips_port_clear_output(parm.port, parm.pin);
- else
- ifxmips_port_set_output(parm.port, parm.pin);
- break;
-
- case IFXMIPS_PORT_IOCALTSEL0:
- if (parm.value == 0x00)
- ifxmips_port_clear_altsel0(parm.port, parm.pin);
- else
- ifxmips_port_set_altsel0(parm.port, parm.pin);
- break;
-
- case IFXMIPS_PORT_IOCALTSEL1:
- if (parm.value == 0x00)
- ifxmips_port_clear_altsel1(parm.port, parm.pin);
- else
- ifxmips_port_set_altsel1(parm.port, parm.pin);
- break;
-
- case IFXMIPS_PORT_IOCINPUT:
- parm.value = ifxmips_port_get_input(parm.port, parm.pin);
- copy_to_user((void*)arg, (void*)&parm,
- sizeof(struct ifxmips_port_ioctl_parm));
- break;
-
- default:
- ret = -EINVAL;
- }
-
- up (&port_sem);
-
- return ret;
-}
-
-static struct file_operations port_fops = {
- .open = ifxmips_port_open,
- .release = ifxmips_port_release,
- .ioctl = ifxmips_port_ioctl
-};
-
-int __init
-ifxmips_gpio_init (void)
-{
- int retval = 0;
-
- sema_init (&port_sem, 1);
-
- ifxmips_gpio_major = register_chrdev(0, "ifxmips_gpio", &port_fops);
- if (!ifxmips_gpio_major)
- {
- printk("ifxmips-port: Error! Could not register port device. #%d\n", ifxmips_gpio_major);
- retval = -EINVAL;
- goto out;
- }
-
- create_proc_read_entry("ifxmips_gpio", 0, NULL,
- ifxmips_port_read_procmem, NULL);
-
- printk("registered ifxmips gpio driver\n");
-
-out:
- return retval;
-}
-
-void __exit
-ifxmips_gpio_exit (void)
-{
- unregister_chrdev(ifxmips_gpio_major, "ifxmips_gpio");
- remove_proc_entry("ifxmips_gpio", NULL);
-}
-
-module_init(ifxmips_gpio_init);
-module_exit(ifxmips_gpio_exit);