diff options
Diffstat (limited to 'ANDROID_3.4.5/arch/h8300/kernel/gpio.c')
-rw-r--r-- | ANDROID_3.4.5/arch/h8300/kernel/gpio.c | 173 |
1 files changed, 0 insertions, 173 deletions
diff --git a/ANDROID_3.4.5/arch/h8300/kernel/gpio.c b/ANDROID_3.4.5/arch/h8300/kernel/gpio.c deleted file mode 100644 index 6a25dd55..00000000 --- a/ANDROID_3.4.5/arch/h8300/kernel/gpio.c +++ /dev/null @@ -1,173 +0,0 @@ -/* - * linux/arch/h8300/kernel/gpio.c - * - * Yoshinori Sato <ysato@users.sourceforge.jp> - * - */ - -/* - * Internal I/O Port Management - */ - -#include <linux/stddef.h> -#include <linux/proc_fs.h> -#include <linux/kernel.h> -#include <linux/string.h> -#include <linux/fs.h> -#include <linux/init.h> - -#define _(addr) (volatile unsigned char *)(addr) -#if defined(CONFIG_H83007) || defined(CONFIG_H83068) -#include <asm/regs306x.h> -static volatile unsigned char *ddrs[] = { - _(P1DDR),_(P2DDR),_(P3DDR),_(P4DDR),_(P5DDR),_(P6DDR), - NULL, _(P8DDR),_(P9DDR),_(PADDR),_(PBDDR), -}; -#define MAX_PORT 11 -#endif - - #if defined(CONFIG_H83002) || defined(CONFIG_H8048) -/* Fix me!! */ -#include <asm/regs306x.h> -static volatile unsigned char *ddrs[] = { - _(P1DDR),_(P2DDR),_(P3DDR),_(P4DDR),_(P5DDR),_(P6DDR), - NULL, _(P8DDR),_(P9DDR),_(PADDR),_(PBDDR), -}; -#define MAX_PORT 11 -#endif - -#if defined(CONFIG_H8S2678) -#include <asm/regs267x.h> -static volatile unsigned char *ddrs[] = { - _(P1DDR),_(P2DDR),_(P3DDR),NULL ,_(P5DDR),_(P6DDR), - _(P7DDR),_(P8DDR),NULL, _(PADDR),_(PBDDR),_(PCDDR), - _(PDDDR),_(PEDDR),_(PFDDR),_(PGDDR),_(PHDDR), - _(PADDR),_(PBDDR),_(PCDDR),_(PDDDR),_(PEDDR),_(PFDDR), - _(PGDDR),_(PHDDR) -}; -#define MAX_PORT 17 -#endif -#undef _ - -#if !defined(P1DDR) -#error Unsuppoted CPU Selection -#endif - -static struct { - unsigned char used; - unsigned char ddr; -} gpio_regs[MAX_PORT]; - -extern char *_platform_gpio_table(int length); - -int h8300_reserved_gpio(int port, unsigned int bits) -{ - unsigned char *used; - - if (port < 0 || port >= MAX_PORT) - return -1; - used = &(gpio_regs[port].used); - if ((*used & bits) != 0) - return 0; - *used |= bits; - return 1; -} - -int h8300_free_gpio(int port, unsigned int bits) -{ - unsigned char *used; - - if (port < 0 || port >= MAX_PORT) - return -1; - used = &(gpio_regs[port].used); - if ((*used & bits) != bits) - return 0; - *used &= (~bits); - return 1; -} - -int h8300_set_gpio_dir(int port_bit,int dir) -{ - int port = (port_bit >> 8) & 0xff; - int bit = port_bit & 0xff; - - if (ddrs[port] == NULL) - return 0; - if (gpio_regs[port].used & bit) { - if (dir) - gpio_regs[port].ddr |= bit; - else - gpio_regs[port].ddr &= ~bit; - *ddrs[port] = gpio_regs[port].ddr; - return 1; - } else - return 0; -} - -int h8300_get_gpio_dir(int port_bit) -{ - int port = (port_bit >> 8) & 0xff; - int bit = port_bit & 0xff; - - if (ddrs[port] == NULL) - return 0; - if (gpio_regs[port].used & bit) { - return (gpio_regs[port].ddr & bit) != 0; - } else - return -1; -} - -#if defined(CONFIG_PROC_FS) -static char *port_status(int portno) -{ - static char result[10]; - static const char io[2]={'I','O'}; - char *rp; - int c; - unsigned char used,ddr; - - used = gpio_regs[portno].used; - ddr = gpio_regs[portno].ddr; - result[8]='\0'; - rp = result + 7; - for (c = 8; c > 0; c--,rp--,used >>= 1, ddr >>= 1) - if (used & 0x01) - *rp = io[ ddr & 0x01]; - else - *rp = '-'; - return result; -} - -static int gpio_proc_read(char *buf, char **start, off_t offset, - int len, int *unused_i, void *unused_v) -{ - int c,outlen; - static const char port_name[]="123456789ABCDEFGH"; - outlen = 0; - for (c = 0; c < MAX_PORT; c++) { - if (ddrs[c] == NULL) - continue ; - len = sprintf(buf,"P%c: %s\n",port_name[c],port_status(c)); - buf += len; - outlen += len; - } - return outlen; -} - -static __init int register_proc(void) -{ - struct proc_dir_entry *proc_gpio; - - proc_gpio = create_proc_entry("gpio", S_IRUGO, NULL); - if (proc_gpio) - proc_gpio->read_proc = gpio_proc_read; - return proc_gpio != NULL; -} - -__initcall(register_proc); -#endif - -void __init h8300_gpio_init(void) -{ - memcpy(gpio_regs,_platform_gpio_table(sizeof(gpio_regs)),sizeof(gpio_regs)); -} |