#include <linux/workqueue.h>
#include <linux/skbuff.h>
#include <linux/netlink.h>
-#include <linux/platform_device.h>
+#include <linux/platform_device.h>
#include <net/sock.h>
#include <asm/uaccess.h>
#include <asm/semaphore.h>
#define MAX_PORTS 2
#define PINS_PER_PORT 16
-#define DRVNAME "ifxmips_gpio"
+#define DRVNAME "ifxmips_gpio"
static unsigned int ifxmips_gpio_major = 0;
#define IFXMIPS_RST_PIN 15
#define IFXMIPS_RST_PORT 1
-static struct timer_list rst_button_timer;
+static struct timer_list rst_button_timer;
extern struct sock *uevent_sock;
extern u64 uevent_next_seqnum(void);
ifxmips_port_set_open_drain (unsigned int port, unsigned int pin)
{
IFXMIPS_GPIO_SANITY;
- writel(readl(IFXMIPS_GPIO_P0_OD + (port * 0xC)) | (1 << pin), IFXMIPS_GPIO_P0_OD + (port * 0xC));
+ ifxmips_w32(ifxmips_r32(IFXMIPS_GPIO_P0_OD + (port * 0xC)) | (1 << pin), IFXMIPS_GPIO_P0_OD + (port * 0xC));
return 0;
}
ifxmips_port_clear_open_drain (unsigned int port, unsigned int pin)
{
IFXMIPS_GPIO_SANITY;
- writel(readl(IFXMIPS_GPIO_P0_OD + (port * 0xC)) & ~(1 << pin), IFXMIPS_GPIO_P0_OD + (port * 0xC));
+ ifxmips_w32(ifxmips_r32(IFXMIPS_GPIO_P0_OD + (port * 0xC)) & ~(1 << pin), IFXMIPS_GPIO_P0_OD + (port * 0xC));
return 0;
}
ifxmips_port_set_pudsel (unsigned int port, unsigned int pin)
{
IFXMIPS_GPIO_SANITY;
- writel(readl(IFXMIPS_GPIO_P0_PUDSEL + (port * 0xC)) | (1 << pin), IFXMIPS_GPIO_P0_PUDSEL + (port * 0xC));
+ ifxmips_w32(ifxmips_r32(IFXMIPS_GPIO_P0_PUDSEL + (port * 0xC)) | (1 << pin), IFXMIPS_GPIO_P0_PUDSEL + (port * 0xC));
return 0;
}
ifxmips_port_clear_pudsel (unsigned int port, unsigned int pin)
{
IFXMIPS_GPIO_SANITY;
- writel(readl(IFXMIPS_GPIO_P0_PUDSEL + (port * 0xC)) & ~(1 << pin), IFXMIPS_GPIO_P0_PUDSEL + (port * 0xC));
+ ifxmips_w32(ifxmips_r32(IFXMIPS_GPIO_P0_PUDSEL + (port * 0xC)) & ~(1 << pin), IFXMIPS_GPIO_P0_PUDSEL + (port * 0xC));
return 0;
}
ifxmips_port_set_puden (unsigned int port, unsigned int pin)
{
IFXMIPS_GPIO_SANITY;
- writel(readl(IFXMIPS_GPIO_P0_PUDEN + (port * 0xC)) | (1 << pin), IFXMIPS_GPIO_P0_PUDEN + (port * 0xC));
+ ifxmips_w32(ifxmips_r32(IFXMIPS_GPIO_P0_PUDEN + (port * 0xC)) | (1 << pin), IFXMIPS_GPIO_P0_PUDEN + (port * 0xC));
return 0;
}
ifxmips_port_clear_puden (unsigned int port, unsigned int pin)
{
IFXMIPS_GPIO_SANITY;
- writel(readl(IFXMIPS_GPIO_P0_PUDEN + (port * 0xC)) & ~(1 << pin), IFXMIPS_GPIO_P0_PUDEN + (port * 0xC));
+ ifxmips_w32(ifxmips_r32(IFXMIPS_GPIO_P0_PUDEN + (port * 0xC)) & ~(1 << pin), IFXMIPS_GPIO_P0_PUDEN + (port * 0xC));
return 0;
}
ifxmips_port_set_stoff (unsigned int port, unsigned int pin)
{
IFXMIPS_GPIO_SANITY;
- writel(readl(IFXMIPS_GPIO_P0_STOFF + (port * 0xC)) | (1 << pin), IFXMIPS_GPIO_P0_STOFF + (port * 0xC));
+ ifxmips_w32(ifxmips_r32(IFXMIPS_GPIO_P0_STOFF + (port * 0xC)) | (1 << pin), IFXMIPS_GPIO_P0_STOFF + (port * 0xC));
return 0;
}
ifxmips_port_clear_stoff (unsigned int port, unsigned int pin)
{
IFXMIPS_GPIO_SANITY;
- writel(readl(IFXMIPS_GPIO_P0_STOFF + (port * 0xC)) & ~(1 << pin), IFXMIPS_GPIO_P0_STOFF + (port * 0xC));
+ ifxmips_w32(ifxmips_r32(IFXMIPS_GPIO_P0_STOFF + (port * 0xC)) & ~(1 << pin), IFXMIPS_GPIO_P0_STOFF + (port * 0xC));
return 0;
}
ifxmips_port_set_dir_out (unsigned int port, unsigned int pin)
{
IFXMIPS_GPIO_SANITY;
- writel(readl(IFXMIPS_GPIO_P0_DIR + (port * 0xC)) | (1 << pin), IFXMIPS_GPIO_P0_DIR + (port * 0xC));
+ ifxmips_w32(ifxmips_r32(IFXMIPS_GPIO_P0_DIR + (port * 0xC)) | (1 << pin), IFXMIPS_GPIO_P0_DIR + (port * 0xC));
return 0;
}
ifxmips_port_set_dir_in (unsigned int port, unsigned int pin)
{
IFXMIPS_GPIO_SANITY;
- writel(readl(IFXMIPS_GPIO_P0_DIR + (port * 0xC)) & ~(1 << pin), IFXMIPS_GPIO_P0_DIR + (port * 0xC));
+ ifxmips_w32(ifxmips_r32(IFXMIPS_GPIO_P0_DIR + (port * 0xC)) & ~(1 << pin), IFXMIPS_GPIO_P0_DIR + (port * 0xC));
return 0;
}
ifxmips_port_set_output (unsigned int port, unsigned int pin)
{
IFXMIPS_GPIO_SANITY;
- writel(readl(IFXMIPS_GPIO_P0_OUT + (port * 0xC)) | (1 << pin), IFXMIPS_GPIO_P0_OUT + (port * 0xC));
+ ifxmips_w32(ifxmips_r32(IFXMIPS_GPIO_P0_OUT + (port * 0xC)) | (1 << pin), IFXMIPS_GPIO_P0_OUT + (port * 0xC));
return 0;
}
ifxmips_port_clear_output (unsigned int port, unsigned int pin)
{
IFXMIPS_GPIO_SANITY;
- writel(readl(IFXMIPS_GPIO_P0_OUT + (port * 0xC)) & ~(1 << pin), IFXMIPS_GPIO_P0_OUT + (port * 0xC));
+ ifxmips_w32(ifxmips_r32(IFXMIPS_GPIO_P0_OUT + (port * 0xC)) & ~(1 << pin), IFXMIPS_GPIO_P0_OUT + (port * 0xC));
return 0;
}
{
IFXMIPS_GPIO_SANITY;
- if (readl(IFXMIPS_GPIO_P0_IN + (port * 0xC)) & (1 << pin))
+ if (ifxmips_r32(IFXMIPS_GPIO_P0_IN + (port * 0xC)) & (1 << pin))
return 0;
else
return 1;
ifxmips_port_set_altsel0 (unsigned int port, unsigned int pin)
{
IFXMIPS_GPIO_SANITY;
- writel(readl(IFXMIPS_GPIO_P0_ALTSEL0 + (port * 0xC)) | (1 << pin), IFXMIPS_GPIO_P0_ALTSEL0 + (port * 0xC));
+ ifxmips_w32(ifxmips_r32(IFXMIPS_GPIO_P0_ALTSEL0 + (port * 0xC)) | (1 << pin), IFXMIPS_GPIO_P0_ALTSEL0 + (port * 0xC));
return 0;
}
ifxmips_port_clear_altsel0 (unsigned int port, unsigned int pin)
{
IFXMIPS_GPIO_SANITY;
- writel(readl(IFXMIPS_GPIO_P0_ALTSEL0 + (port * 0xC)) & ~(1 << pin), IFXMIPS_GPIO_P0_ALTSEL0 + (port * 0xC));
+ ifxmips_w32(ifxmips_r32(IFXMIPS_GPIO_P0_ALTSEL0 + (port * 0xC)) & ~(1 << pin), IFXMIPS_GPIO_P0_ALTSEL0 + (port * 0xC));
return 0;
}
ifxmips_port_set_altsel1 (unsigned int port, unsigned int pin)
{
IFXMIPS_GPIO_SANITY;
- writel(readl(IFXMIPS_GPIO_P0_ALTSEL1 + (port * 0xC)) | (1 << pin), IFXMIPS_GPIO_P0_ALTSEL1 + (port * 0xC));
+ ifxmips_w32(ifxmips_r32(IFXMIPS_GPIO_P0_ALTSEL1 + (port * 0xC)) | (1 << pin), IFXMIPS_GPIO_P0_ALTSEL1 + (port * 0xC));
return 0;
}
ifxmips_port_clear_altsel1 (unsigned int port, unsigned int pin)
{
IFXMIPS_GPIO_SANITY;
- writel(readl(IFXMIPS_GPIO_P0_ALTSEL1 + (port * 0xC)) & ~(1 << pin), IFXMIPS_GPIO_P0_ALTSEL1 + (port * 0xC));
+ ifxmips_w32(ifxmips_r32(IFXMIPS_GPIO_P0_ALTSEL1 + (port * 0xC)) & ~(1 << pin), IFXMIPS_GPIO_P0_ALTSEL1 + (port * 0xC));
return 0;
}
static void reset_button_poll(unsigned long unused)
{
struct event_t *event;
-
+
rst_button_timer.expires = jiffies + HZ;
add_timer(&rst_button_timer);
-
+
if (pressed != ifxmips_port_get_input(IFXMIPS_RST_PORT, IFXMIPS_RST_PIN))
{
if(pressed)
}
#endif
-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
-};
-
static int
ifxmips_gpio_probe (struct platform_device *dev)
{
sema_init (&port_sem, 1);
- ifxmips_gpio_major = register_chrdev(0, DRVNAME, &port_fops);
- if (!ifxmips_gpio_major)
- {
- printk(KERN_INFO DRVNAME ": Error! Could not register port device. #%d\n", ifxmips_gpio_major);
- retval = -EINVAL;
- goto out;
- }
-
- create_proc_read_entry(DRVNAME, 0, NULL, ifxmips_port_read_procmem, NULL);
-
#ifdef CONFIG_IFXMIPS_GPIO_RST_BTN
ifxmips_port_set_open_drain(IFXMIPS_RST_PORT, IFXMIPS_RST_PIN);
ifxmips_port_clear_altsel0(IFXMIPS_RST_PORT, IFXMIPS_RST_PIN);
ifxmips_port_clear_altsel1(IFXMIPS_RST_PORT, IFXMIPS_RST_PIN);
ifxmips_port_set_dir_in(IFXMIPS_RST_PORT, IFXMIPS_RST_PIN);
-
+
seen = jiffies;
init_timer(&rst_button_timer);
printk(KERN_INFO DRVNAME ": device successfully initialized #%d.\n", ifxmips_gpio_major);
-out:
return retval;
}
del_timer_sync(&rst_button_timer);
#endif
unregister_chrdev(ifxmips_gpio_major, DRVNAME);
- remove_proc_entry(DRVNAME, NULL);
return 0;
}
-static struct
-platform_driver ifxmips_gpio_driver = {
- .probe = ifxmips_gpio_probe,
- .remove = ifxmips_gpio_remove,
- .driver = {
- .name = DRVNAME,
- .owner = THIS_MODULE,
- },
-};
+static struct
+platform_driver ifxmips_gpio_driver = {
+ .probe = ifxmips_gpio_probe,
+ .remove = ifxmips_gpio_remove,
+ .driver = {
+ .name = DRVNAME,
+ .owner = THIS_MODULE,
+ },
+};
int __init
ifxmips_gpio_init (void)
{
- int ret = platform_driver_register(&ifxmips_gpio_driver);
- if (ret)
- printk(KERN_INFO DRVNAME ": Error registering platfom driver!");
- return ret;
+ int ret = platform_driver_register(&ifxmips_gpio_driver);
+ if (ret)
+ printk(KERN_INFO DRVNAME ": Error registering platfom driver!");
+ return ret;
}
void __exit
ifxmips_gpio_exit (void)
{
- platform_driver_unregister(&ifxmips_gpio_driver);
+ platform_driver_unregister(&ifxmips_gpio_driver);
}
module_init(ifxmips_gpio_init);
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