xref: /openbmc/u-boot/include/smsc_sio1007.h (revision 76b00aca)
1 /*
2  * Copyright (C) 2016, Bin Meng <bmeng.cn@gmail.com>
3  *
4  * SPDX-License-Identifier:	GPL-2.0+
5  */
6 
7 #ifndef _SMSC_SIO1007_H_
8 #define _SMSC_SIO1007_H_
9 
10 /*
11  * The I/O base address of SIO1007 at power-up is determined by the SYSOPT0
12  * and SYSOPT1 pins at the deasserting edge of PCIRST#. The combination of
13  * SYSOPT0 and SYSOPT1 determines one of the following addresses.
14  */
15 #define SIO1007_IOPORT0		0x002e
16 #define SIO1007_IOPORT1		0x004e
17 #define SIO1007_IOPORT2		0x162e
18 #define SIO1007_IOPORT3		0x164e
19 
20 /* SIO1007 registers */
21 
22 #define DEV_POWER_CTRL		0x02
23 #define UART1_POWER_ON		(1 << 3)
24 #define UART2_POWER_ON		(1 << 7)
25 
26 #define UART1_IOBASE		0x24
27 #define UART2_IOBASE		0x25
28 #define UART_IRQ		0x28
29 
30 #define RTR_IOBASE_HIGH		0x21
31 #define RTR_IOBASE_LOW		0x30
32 
33 #define GPIO0_DIR		0x31
34 #define GPIO1_DIR		0x35
35 #define GPIO_DIR_INPUT		0
36 #define GPIO_DIR_OUTPUT		1
37 
38 #define GPIO0_POL		0x32
39 #define GPIO1_POL		0x36
40 #define GPIO_POL_NO_INVERT	0
41 #define GPIO_POL_INVERT		1
42 
43 #define GPIO0_TYPE		0x33
44 #define GPIO1_TYPE		0x37
45 #define GPIO_TYPE_PUSH_PULL	0
46 #define GPIO_TYPE_OPEN_DRAIN	1
47 
48 #define DEV_ACTIVATE		0x3a
49 #define RTR_EN			(1 << 1)
50 
51 /* Runtime register offset */
52 
53 #define GPIO0_DATA		0xc
54 #define GPIO1_DATA		0xe
55 
56 /* Number of serial ports supported */
57 #define SIO1007_UART_NUM	2
58 
59 /* Number of gpio pins supported */
60 #define GPIO_NUM_PER_GROUP	8
61 #define GPIO_GROUP_NUM		2
62 #define SIO1007_GPIO_NUM	(GPIO_NUM_PER_GROUP * GPIO_GROUP_NUM)
63 
64 /**
65  * Configure the I/O port address of the specified serial device and
66  * enable the serial device.
67  *
68  * @port:	SIO1007 I/O port address
69  * @num:	serial device number (0 or 1)
70  * @iobase:	processor I/O port address to assign to this serial device
71  * @irq:	processor IRQ number to assign to this serial device
72  */
73 void sio1007_enable_serial(int port, int num, int iobase, int irq);
74 
75 /**
76  * Configure the I/O port address of the runtime register block and
77  * enable the address decoding.
78  *
79  * @port:	SIO1007 I/O port address
80  * @iobase:	processor I/O port address to assign to the runtime registers
81  */
82 void sio1007_enable_runtime(int port, int iobase);
83 
84 /**
85  * Configure the direction/polority/type of a specified GPIO pin
86  *
87  * @port:	SIO1007 I/O port address
88  * @gpio:	GPIO number (0-7 for GP10-GP17, 8-15 for GP30-GP37)
89  * @dir:	GPIO_DIR_INPUT or GPIO_DIR_OUTPUT
90  * @pol:	GPIO_POL_NO_INVERT or GPIO_POL_INVERT
91  * @type:	GPIO_TYPE_PUSH_PULL or GPIO_TYPE_OPEN_DRAIN
92  */
93 void sio1007_gpio_config(int port, int gpio, int dir, int pol, int type);
94 
95 /**
96  * Get a GPIO pin value.
97  * This will work whether the GPIO is an input or an output.
98  *
99  * @port:	runtime register block I/O port address
100  * @gpio:	GPIO number (0-7 for GP10-GP17, 8-15 for GP30-GP37)
101  * @return:	0 if low, 1 if high, -EINVAL if gpio number is invalid
102  */
103 int sio1007_gpio_get_value(int port, int gpio);
104 
105 /**
106  * Set a GPIO pin value.
107  * This will only work when the GPIO is configured as an output.
108  *
109  * @port:	runtime register block I/O port address
110  * @gpio:	GPIO number (0-7 for GP10-GP17, 8-15 for GP30-GP37)
111  * @val:	0 if low, 1 if high
112  */
113 void sio1007_gpio_set_value(int port, int gpio, int val);
114 
115 #endif /* _SMSC_SIO1007_H_ */
116