diff options
Diffstat (limited to 'target/linux/ifxmips/files/arch/mips/ifxmips/gpio.c')
-rw-r--r-- | target/linux/ifxmips/files/arch/mips/ifxmips/gpio.c | 136 |
1 files changed, 54 insertions, 82 deletions
diff --git a/target/linux/ifxmips/files/arch/mips/ifxmips/gpio.c b/target/linux/ifxmips/files/arch/mips/ifxmips/gpio.c index bd34b91179..2100ebb4c3 100644 --- a/target/linux/ifxmips/files/arch/mips/ifxmips/gpio.c +++ b/target/linux/ifxmips/files/arch/mips/ifxmips/gpio.c @@ -51,7 +51,7 @@ static struct timer_list rst_button_timer; extern struct sock *uevent_sock; extern u64 uevent_next_seqnum(void); static unsigned long seen; -static int pressed = 0; +static int pressed; struct event_t { struct work_struct wq; @@ -61,26 +61,24 @@ struct event_t { #endif #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) + +int ifxmips_port_reserve_pin(unsigned int port, unsigned int pin) { IFXMIPS_GPIO_SANITY; - printk("%s : call to obseleted function\n", __func__); + printk(KERN_INFO "%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) +int ifxmips_port_free_pin(unsigned int port, unsigned int pin) { IFXMIPS_GPIO_SANITY; - printk("%s : call to obseleted function\n", __func__); + printk(KERN_INFO "%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) +int ifxmips_port_set_open_drain(unsigned int port, unsigned int pin) { IFXMIPS_GPIO_SANITY; ifxmips_w32(ifxmips_r32(IFXMIPS_GPIO_P0_OD + (port * 0xC)) | (1 << pin), @@ -89,8 +87,7 @@ ifxmips_port_set_open_drain(unsigned int port, unsigned int pin) } EXPORT_SYMBOL(ifxmips_port_set_open_drain); -int -ifxmips_port_clear_open_drain(unsigned int port, unsigned int pin) +int ifxmips_port_clear_open_drain(unsigned int port, unsigned int pin) { IFXMIPS_GPIO_SANITY; ifxmips_w32(ifxmips_r32(IFXMIPS_GPIO_P0_OD + (port * 0xC)) & ~(1 << pin), @@ -99,110 +96,99 @@ ifxmips_port_clear_open_drain(unsigned int port, unsigned int pin) } EXPORT_SYMBOL(ifxmips_port_clear_open_drain); -int -ifxmips_port_set_pudsel(unsigned int port, unsigned int pin) +int ifxmips_port_set_pudsel(unsigned int port, unsigned int pin) { - IFXMIPS_GPIO_SANITY; + IFXMIPS_GPIO_SANITY; ifxmips_w32(ifxmips_r32(IFXMIPS_GPIO_P0_PUDSEL + (port * 0xC)) | (1 << pin), IFXMIPS_GPIO_P0_PUDSEL + (port * 0xC)); return 0; } EXPORT_SYMBOL(ifxmips_port_set_pudsel); -int -ifxmips_port_clear_pudsel (unsigned int port, unsigned int pin) +int ifxmips_port_clear_pudsel(unsigned int port, unsigned int pin) { - IFXMIPS_GPIO_SANITY; + IFXMIPS_GPIO_SANITY; ifxmips_w32(ifxmips_r32(IFXMIPS_GPIO_P0_PUDSEL + (port * 0xC)) & ~(1 << pin), IFXMIPS_GPIO_P0_PUDSEL + (port * 0xC)); return 0; } EXPORT_SYMBOL(ifxmips_port_clear_pudsel); -int -ifxmips_port_set_puden(unsigned int port, unsigned int pin) +int ifxmips_port_set_puden(unsigned int port, unsigned int pin) { - IFXMIPS_GPIO_SANITY; + IFXMIPS_GPIO_SANITY; ifxmips_w32(ifxmips_r32(IFXMIPS_GPIO_P0_PUDEN + (port * 0xC)) | (1 << pin), IFXMIPS_GPIO_P0_PUDEN + (port * 0xC)); return 0; } EXPORT_SYMBOL(ifxmips_port_set_puden); -int -ifxmips_port_clear_puden(unsigned int port, unsigned int pin) +int ifxmips_port_clear_puden(unsigned int port, unsigned int pin) { - IFXMIPS_GPIO_SANITY; + IFXMIPS_GPIO_SANITY; ifxmips_w32(ifxmips_r32(IFXMIPS_GPIO_P0_PUDEN + (port * 0xC)) & ~(1 << pin), IFXMIPS_GPIO_P0_PUDEN + (port * 0xC)); return 0; } EXPORT_SYMBOL(ifxmips_port_clear_puden); -int -ifxmips_port_set_stoff(unsigned int port, unsigned int pin) +int ifxmips_port_set_stoff(unsigned int port, unsigned int pin) { - IFXMIPS_GPIO_SANITY; + IFXMIPS_GPIO_SANITY; ifxmips_w32(ifxmips_r32(IFXMIPS_GPIO_P0_STOFF + (port * 0xC)) | (1 << pin), IFXMIPS_GPIO_P0_STOFF + (port * 0xC)); return 0; } EXPORT_SYMBOL(ifxmips_port_set_stoff); -int -ifxmips_port_clear_stoff(unsigned int port, unsigned int pin) +int ifxmips_port_clear_stoff(unsigned int port, unsigned int pin) { - IFXMIPS_GPIO_SANITY; + IFXMIPS_GPIO_SANITY; ifxmips_w32(ifxmips_r32(IFXMIPS_GPIO_P0_STOFF + (port * 0xC)) & ~(1 << pin), IFXMIPS_GPIO_P0_STOFF + (port * 0xC)); return 0; } EXPORT_SYMBOL(ifxmips_port_clear_stoff); -int -ifxmips_port_set_dir_out(unsigned int port, unsigned int pin) +int ifxmips_port_set_dir_out(unsigned int port, unsigned int pin) { - IFXMIPS_GPIO_SANITY; + IFXMIPS_GPIO_SANITY; ifxmips_w32(ifxmips_r32(IFXMIPS_GPIO_P0_DIR + (port * 0xC)) | (1 << pin), IFXMIPS_GPIO_P0_DIR + (port * 0xC)); return 0; } EXPORT_SYMBOL(ifxmips_port_set_dir_out); -int -ifxmips_port_set_dir_in(unsigned int port, unsigned int pin) +int ifxmips_port_set_dir_in(unsigned int port, unsigned int pin) { - IFXMIPS_GPIO_SANITY; + IFXMIPS_GPIO_SANITY; ifxmips_w32(ifxmips_r32(IFXMIPS_GPIO_P0_DIR + (port * 0xC)) & ~(1 << pin), IFXMIPS_GPIO_P0_DIR + (port * 0xC)); return 0; } EXPORT_SYMBOL(ifxmips_port_set_dir_in); -int -ifxmips_port_set_output(unsigned int port, unsigned int pin) +int ifxmips_port_set_output(unsigned int port, unsigned int pin) { - IFXMIPS_GPIO_SANITY; + IFXMIPS_GPIO_SANITY; ifxmips_w32(ifxmips_r32(IFXMIPS_GPIO_P0_OUT + (port * 0xC)) | (1 << pin), IFXMIPS_GPIO_P0_OUT + (port * 0xC)); return 0; } EXPORT_SYMBOL(ifxmips_port_set_output); -int -ifxmips_port_clear_output(unsigned int port, unsigned int pin) +int ifxmips_port_clear_output(unsigned int port, unsigned int pin) { - IFXMIPS_GPIO_SANITY; + IFXMIPS_GPIO_SANITY; ifxmips_w32(ifxmips_r32(IFXMIPS_GPIO_P0_OUT + (port * 0xC)) & ~(1 << pin), IFXMIPS_GPIO_P0_OUT + (port * 0xC)); return 0; } EXPORT_SYMBOL(ifxmips_port_clear_output); -int -ifxmips_port_get_input(unsigned int port, unsigned int pin) +int ifxmips_port_get_input(unsigned int port, unsigned int pin) { - IFXMIPS_GPIO_SANITY; + IFXMIPS_GPIO_SANITY; if (ifxmips_r32(IFXMIPS_GPIO_P0_IN + (port * 0xC)) & (1 << pin)) return 0; else @@ -210,40 +196,36 @@ ifxmips_port_get_input(unsigned int port, unsigned int pin) } EXPORT_SYMBOL(ifxmips_port_get_input); -int -ifxmips_port_set_altsel0(unsigned int port, unsigned int pin) +int ifxmips_port_set_altsel0(unsigned int port, unsigned int pin) { - IFXMIPS_GPIO_SANITY; + IFXMIPS_GPIO_SANITY; ifxmips_w32(ifxmips_r32(IFXMIPS_GPIO_P0_ALTSEL0 + (port * 0xC)) | (1 << pin), IFXMIPS_GPIO_P0_ALTSEL0 + (port * 0xC)); return 0; } EXPORT_SYMBOL(ifxmips_port_set_altsel0); -int -ifxmips_port_clear_altsel0(unsigned int port, unsigned int pin) +int ifxmips_port_clear_altsel0(unsigned int port, unsigned int pin) { - IFXMIPS_GPIO_SANITY; + IFXMIPS_GPIO_SANITY; ifxmips_w32(ifxmips_r32(IFXMIPS_GPIO_P0_ALTSEL0 + (port * 0xC)) & ~(1 << pin), IFXMIPS_GPIO_P0_ALTSEL0 + (port * 0xC)); return 0; } EXPORT_SYMBOL(ifxmips_port_clear_altsel0); -int -ifxmips_port_set_altsel1(unsigned int port, unsigned int pin) +int ifxmips_port_set_altsel1(unsigned int port, unsigned int pin) { - IFXMIPS_GPIO_SANITY; + IFXMIPS_GPIO_SANITY; ifxmips_w32(ifxmips_r32(IFXMIPS_GPIO_P0_ALTSEL1 + (port * 0xC)) | (1 << pin), IFXMIPS_GPIO_P0_ALTSEL1 + (port * 0xC)); return 0; } EXPORT_SYMBOL(ifxmips_port_set_altsel1); -int -ifxmips_port_clear_altsel1(unsigned int port, unsigned int pin) +int ifxmips_port_clear_altsel1(unsigned int port, unsigned int pin) { - IFXMIPS_GPIO_SANITY; + IFXMIPS_GPIO_SANITY; ifxmips_w32(ifxmips_r32(IFXMIPS_GPIO_P0_ALTSEL1 + (port * 0xC)) & ~(1 << pin), IFXMIPS_GPIO_P0_ALTSEL1 + (port * 0xC)); return 0; @@ -251,16 +233,14 @@ ifxmips_port_clear_altsel1(unsigned int port, unsigned int pin) EXPORT_SYMBOL(ifxmips_port_clear_altsel1); #ifdef CONFIG_IFXMIPS_GPIO_RST_BTN -static inline void -add_msg(struct sk_buff *skb, char *msg) +static inline void add_msg(struct sk_buff *skb, char *msg) { char *scratch; scratch = skb_put(skb, strlen(msg) + 1); sprintf(scratch, msg); } -static void -hotplug_button(struct work_struct *wq) +static void hotplug_button(struct work_struct *wq) { struct sk_buff *skb; struct event_t *event; @@ -269,17 +249,17 @@ hotplug_button(struct work_struct *wq) char buf[128]; event = container_of(wq, struct event_t, wq); - if(!uevent_sock) + if (!uevent_sock) goto done; s = event->set ? "pressed" : "released"; len = strlen(s) + 2; skb = alloc_skb(len + 2048, GFP_KERNEL); - if(!skb) + if (!skb) goto done; scratch = skb_put(skb, len); - sprintf(scratch, "%s@",s); + sprintf(scratch, "%s@", s); add_msg(skb, "HOME=/"); add_msg(skb, "PATH=/sbin:/bin:/usr/sbin:/usr/bin"); add_msg(skb, "SUBSYSTEM=button"); @@ -296,24 +276,21 @@ done: kfree(event); } -static void -reset_button_poll(unsigned long unused) +static void reset_button_poll(unsigned long unused) { struct event_t *event; rst_button_timer.expires = jiffies + (HZ / 4); add_timer(&rst_button_timer); - if (pressed != ifxmips_port_get_input(rst_port, rst_pin)) - { - if(pressed) + if (pressed != ifxmips_port_get_input(rst_port, rst_pin)) { + if (pressed) pressed = 0; else pressed = 1; - event = (struct event_t *) kzalloc(sizeof(struct event_t), GFP_ATOMIC); - if (!event) - { - printk("Could not alloc hotplug event\n"); + event = kzalloc(sizeof(struct event_t), GFP_ATOMIC); + if (!event) { + printk(KERN_INFO "Could not alloc hotplug event\n"); return; } event->set = pressed; @@ -325,8 +302,7 @@ reset_button_poll(unsigned long unused) } #endif -static int -ifxmips_gpio_probe(struct platform_device *dev) +static int ifxmips_gpio_probe(struct platform_device *dev) { int retval = 0; @@ -346,8 +322,7 @@ ifxmips_gpio_probe(struct platform_device *dev) return retval; } -static int -ifxmips_gpio_remove(struct platform_device *pdev) +static int ifxmips_gpio_remove(struct platform_device *pdev) { #ifdef CONFIG_IFXMIPS_GPIO_RST_BTN del_timer_sync(&rst_button_timer); @@ -355,8 +330,7 @@ ifxmips_gpio_remove(struct platform_device *pdev) return 0; } -static struct -platform_driver ifxmips_gpio_driver = { +static struct platform_driver ifxmips_gpio_driver = { .probe = ifxmips_gpio_probe, .remove = ifxmips_gpio_remove, .driver = { @@ -365,8 +339,7 @@ platform_driver ifxmips_gpio_driver = { }, }; -int __init -ifxmips_gpio_init(void) +int __init ifxmips_gpio_init(void) { int ret = platform_driver_register(&ifxmips_gpio_driver); if (ret) @@ -374,8 +347,7 @@ ifxmips_gpio_init(void) return ret; } -void __exit -ifxmips_gpio_exit(void) +void __exit ifxmips_gpio_exit(void) { platform_driver_unregister(&ifxmips_gpio_driver); } |