34 static u8 port;  variable
47 static u8 read_reg(u8 addr, u8 port)  in read_reg()  argument
49 	outb(addr, port);  in read_reg()
50 	return inb(port + 1);  in read_reg()
53 static void write_reg(u8 data, u8 addr, u8 port)  in write_reg()  argument
55 	outb(addr, port);  in write_reg()
56 	outb(data, port + 1);  in write_reg()
59 static void enter_conf_mode(u8 port)  in enter_conf_mode()  argument
61 	outb(0x87, port);  in enter_conf_mode()
62 	outb(0x61, port);  in enter_conf_mode()
63 	outb(0x55, port);  in enter_conf_mode()
64 	outb((port == 0x2e) ? 0x55 : 0xaa, port);  in enter_conf_mode()
67 static void exit_conf_mode(u8 port)  in exit_conf_mode()  argument
69 	outb(0x2, port);  in exit_conf_mode()
70 	outb(0x2, port + 1);  in exit_conf_mode()
73 static void enter_gpio_mode(u8 port)  in enter_gpio_mode()  argument
75 	write_reg(0x2, 0x7, port);  in enter_gpio_mode()
99 	enter_conf_mode(port);  in it8761e_gpio_direction_in()
100 	enter_gpio_mode(port);  in it8761e_gpio_direction_in()
102 	curr_dirs = read_reg(io_reg, port);  in it8761e_gpio_direction_in()
105 		write_reg(curr_dirs & ~(1 << bit), io_reg, port);  in it8761e_gpio_direction_in()
107 	exit_conf_mode(port);  in it8761e_gpio_direction_in()
145 	enter_conf_mode(port);  in it8761e_gpio_direction_out()
146 	enter_gpio_mode(port);  in it8761e_gpio_direction_out()
148 	curr_dirs = read_reg(io_reg, port);  in it8761e_gpio_direction_out()
151 		write_reg(curr_dirs | (1 << bit), io_reg, port);  in it8761e_gpio_direction_out()
153 	exit_conf_mode(port);  in it8761e_gpio_direction_out()
184 			port = ports[i];  in it8761e_gpio_init()
189 	if (!port)  in it8761e_gpio_init()
193 	enter_conf_mode(port);  in it8761e_gpio_init()
194 	enter_gpio_mode(port);  in it8761e_gpio_init()
195 	gpio_ba = (read_reg(GPIO_BA_HIGH_BYTE, port) << 8) +  in it8761e_gpio_init()
196 				read_reg(GPIO_BA_LOW_BYTE, port);  in it8761e_gpio_init()
197 	exit_conf_mode(port);  in it8761e_gpio_init()