diff options
Diffstat (limited to 'target/linux/ifxmips/files/drivers/char/ifxmips_gpio.c')
| -rw-r--r-- | target/linux/ifxmips/files/drivers/char/ifxmips_gpio.c | 195 |
1 files changed, 4 insertions, 191 deletions
diff --git a/target/linux/ifxmips/files/drivers/char/ifxmips_gpio.c b/target/linux/ifxmips/files/drivers/char/ifxmips_gpio.c index c1eefa5a9c..8beb0b8200 100644 --- a/target/linux/ifxmips/files/drivers/char/ifxmips_gpio.c +++ b/target/linux/ifxmips/files/drivers/char/ifxmips_gpio.c @@ -43,7 +43,7 @@ #define MAX_PORTS 2 #define PINS_PER_PORT 16 -#define DRVNAME "ifxmips_gpio" +#define DRVNAME "ifxmips_gpio" static unsigned int ifxmips_gpio_major = 0; @@ -51,7 +51,7 @@ 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); @@ -315,10 +315,10 @@ done: 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) @@ -341,181 +341,6 @@ static void reset_button_poll(unsigned long unused) } #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 = ifxmips_r32(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) { @@ -523,16 +348,6 @@ 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); @@ -549,7 +364,6 @@ ifxmips_gpio_probe (struct platform_device *dev) printk(KERN_INFO DRVNAME ": device successfully initialized #%d.\n", ifxmips_gpio_major); -out: return retval; } @@ -560,7 +374,6 @@ ifxmips_gpio_remove (struct platform_device *pdev) del_timer_sync(&rst_button_timer); #endif unregister_chrdev(ifxmips_gpio_major, DRVNAME); - remove_proc_entry(DRVNAME, NULL); return 0; } |