2 * Copyright (C) 2016, Bin Meng <bmeng.cn@gmail.com>
4 * SPDX-License-Identifier: GPL-2.0+
10 #include <smsc_sio1007.h>
12 static inline u8 sio1007_read(int port, int reg)
19 static inline void sio1007_write(int port, int reg, int val)
25 static inline void sio1007_clrsetbits(int port, int reg, u8 clr, u8 set)
27 sio1007_write(port, reg, (sio1007_read(port, reg) & ~clr) | set);
30 void sio1007_enable_serial(int port, int num, int iobase, int irq)
32 if (num < 0 || num > SIO1007_UART_NUM)
35 /* enter configuration state */
38 /* power on serial port and set up its i/o base & irq */
40 sio1007_clrsetbits(port, DEV_POWER_CTRL, 0, UART1_POWER_ON);
41 sio1007_clrsetbits(port, UART1_IOBASE, 0xfe, iobase >> 2);
42 sio1007_clrsetbits(port, UART_IRQ, 0xf0, irq << 4);
44 sio1007_clrsetbits(port, DEV_POWER_CTRL, 0, UART2_POWER_ON);
45 sio1007_clrsetbits(port, UART2_IOBASE, 0xfe, iobase >> 2);
46 sio1007_clrsetbits(port, UART_IRQ, 0x0f, irq);
49 /* exit configuration state */
53 void sio1007_enable_runtime(int port, int iobase)
55 /* enter configuration state */
58 /* set i/o base for the runtime register block */
59 sio1007_clrsetbits(port, RTR_IOBASE_LOW, 0, iobase >> 4);
60 sio1007_clrsetbits(port, RTR_IOBASE_HIGH, 0, iobase >> 12);
61 /* turn on address decoding for this block */
62 sio1007_clrsetbits(port, DEV_ACTIVATE, 0, RTR_EN);
64 /* exit configuration state */
68 void sio1007_gpio_config(int port, int gpio, int dir, int pol, int type)
72 if (gpio < 0 || gpio > SIO1007_GPIO_NUM)
74 if (gpio >= GPIO_NUM_PER_GROUP) {
76 gpio -= GPIO_NUM_PER_GROUP;
79 /* enter configuration state */
82 /* set gpio pin direction, polority and type */
83 sio1007_clrsetbits(port, reg, 1 << gpio, dir << gpio);
84 sio1007_clrsetbits(port, reg + 1, 1 << gpio, pol << gpio);
85 sio1007_clrsetbits(port, reg + 2, 1 << gpio, type << gpio);
87 /* exit configuration state */
91 int sio1007_gpio_get_value(int port, int gpio)
96 if (gpio < 0 || gpio > SIO1007_GPIO_NUM)
98 if (gpio >= GPIO_NUM_PER_GROUP) {
100 gpio -= GPIO_NUM_PER_GROUP;
103 val = inb(port + reg);
104 if (val & (1 << gpio))
110 void sio1007_gpio_set_value(int port, int gpio, int val)
112 int reg = GPIO0_DATA;
115 if (gpio < 0 || gpio > SIO1007_GPIO_NUM)
117 if (gpio >= GPIO_NUM_PER_GROUP) {
119 gpio -= GPIO_NUM_PER_GROUP;
122 data = inb(port + reg);
123 data &= ~(1 << gpio);
124 data |= (val << gpio);
125 outb(data, port + reg);