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make ifxmips gpio a platform device

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SVN-Revision: 9922
This commit is contained in:
John Crispin 2007-12-25 12:18:42 +00:00
parent 3a97496977
commit 1fa388162b
2 changed files with 49 additions and 11 deletions
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9
target/linux/ifxmips/files/arch/mips/ifxmips/board.c
View file

@ -46,6 +46,14 @@ static struct platform_device ifxmips_led[] =
}, },
}; };
static struct platform_device ifxmips_gpio[] =
{
{
.id = 0,
.name = "ifxmips_gpio",
},
};
int __init ifxmips_init_devices(void) int __init ifxmips_init_devices(void)
{ {
/* /*
@ -61,6 +69,7 @@ int __init ifxmips_init_devices(void)
/* the following devices are generic for all targets */ /* the following devices are generic for all targets */
ifxmips_devs[dev++] = ifxmips_led; ifxmips_devs[dev++] = ifxmips_led;
ifxmips_devs[dev++] = ifxmips_gpio;
return platform_add_devices(ifxmips_devs, dev); return platform_add_devices(ifxmips_devs, dev);
} }

51
target/linux/ifxmips/files/drivers/char/ifxmips_gpio.c
View file

@ -32,6 +32,7 @@
#include <linux/workqueue.h> #include <linux/workqueue.h>
#include <linux/skbuff.h> #include <linux/skbuff.h>
#include <linux/netlink.h> #include <linux/netlink.h>
#include <linux/platform_device.h>
#include <net/sock.h> #include <net/sock.h>
#include <asm/uaccess.h> #include <asm/uaccess.h>
#include <asm/semaphore.h> #include <asm/semaphore.h>
@ -42,6 +43,8 @@
#define MAX_PORTS 2 #define MAX_PORTS 2
#define PINS_PER_PORT 16 #define PINS_PER_PORT 16
#define DRVNAME "ifxmips_gpio"
static unsigned int ifxmips_gpio_major = 0; static unsigned int ifxmips_gpio_major = 0;
#ifdef CONFIG_IFXMIPS_GPIO_RST_BTN #ifdef CONFIG_IFXMIPS_GPIO_RST_BTN
@ -513,23 +516,22 @@ static struct file_operations port_fops = {
.ioctl = ifxmips_port_ioctl .ioctl = ifxmips_port_ioctl
}; };
int __init static int
ifxmips_gpio_init (void) ifxmips_gpio_probe (struct platform_device *dev)
{ {
int retval = 0; int retval = 0;
sema_init (&port_sem, 1); sema_init (&port_sem, 1);
ifxmips_gpio_major = register_chrdev(0, "ifxmips_gpio", &port_fops); ifxmips_gpio_major = register_chrdev(0, DRVNAME, &port_fops);
if (!ifxmips_gpio_major) if (!ifxmips_gpio_major)
{ {
printk("ifxmips-port: Error! Could not register port device. #%d\n", ifxmips_gpio_major); printk(KERN_INFO DRVNAME ": Error! Could not register port device. #%d\n", ifxmips_gpio_major);
retval = -EINVAL; retval = -EINVAL;
goto out; goto out;
} }
create_proc_read_entry("ifxmips_gpio", 0, NULL, create_proc_read_entry(DRVNAME, 0, NULL, ifxmips_port_read_procmem, NULL);
ifxmips_port_read_procmem, NULL);
#ifdef CONFIG_IFXMIPS_GPIO_RST_BTN #ifdef CONFIG_IFXMIPS_GPIO_RST_BTN
ifxmips_port_set_open_drain(IFXMIPS_RST_PORT, IFXMIPS_RST_PIN); ifxmips_port_set_open_drain(IFXMIPS_RST_PORT, IFXMIPS_RST_PIN);
@ -545,20 +547,47 @@ ifxmips_gpio_init (void)
add_timer(&rst_button_timer); add_timer(&rst_button_timer);
#endif #endif
printk("registered ifxmips gpio driver\n"); printk(KERN_INFO DRVNAME ": device successfully initialized #%d.\n", ifxmips_gpio_major);
out: out:
return retval; return retval;
} }
void __exit static int
ifxmips_gpio_exit (void) ifxmips_gpio_remove (struct platform_device *pdev)
{ {
#ifdef CONFIG_IFXMIPS_GPIO_RST_BTN #ifdef CONFIG_IFXMIPS_GPIO_RST_BTN
del_timer_sync(&rst_button_timer); del_timer_sync(&rst_button_timer);
#endif #endif
unregister_chrdev(ifxmips_gpio_major, "ifxmips_gpio"); unregister_chrdev(ifxmips_gpio_major, DRVNAME);
remove_proc_entry("ifxmips_gpio", NULL); 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,
},
};
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;
}
void __exit
ifxmips_gpio_exit (void)
{
platform_driver_unregister(&ifxmips_gpio_driver);
} }
module_init(ifxmips_gpio_init); module_init(ifxmips_gpio_init);