summaryrefslogtreecommitdiff
path: root/target/linux/ramips/files/arch/mips/ralink/rt288x/rt288x.c
blob: c51ad98b3afdb66d6b3fe8b9658bfb2665fc166e (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
/*
 * Ralink RT288x SoC specific setup
 *
 * Copyright (C) 2008-2011 Gabor Juhos <juhosg@openwrt.org>
 * Copyright (C) 2008 Imre Kaloz <kaloz@openwrt.org>
 *
 * Parts of this file are based on Ralink's 2.6.21 BSP
 *
 * This program is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License version 2 as published
 * by the Free Software Foundation.
 */

#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/module.h>

#include <asm/mach-ralink/common.h>
#include <asm/mach-ralink/ramips_gpio.h>
#include <asm/mach-ralink/rt288x.h>
#include <asm/mach-ralink/rt288x_regs.h>

void __iomem * rt288x_sysc_base;
void __iomem * rt288x_memc_base;

void __init ramips_soc_prom_init(void)
{
	void __iomem *sysc = (void __iomem *) KSEG1ADDR(RT2880_SYSC_BASE);
	u32 n0;
	u32 n1;
	u32 id;

	n0 = __raw_readl(sysc + SYSC_REG_CHIP_NAME0);
	n1 = __raw_readl(sysc + SYSC_REG_CHIP_NAME1);
	id = __raw_readl(sysc + SYSC_REG_CHIP_ID);

	snprintf(ramips_sys_type, RAMIPS_SYS_TYPE_LEN,
		"Ralink %c%c%c%c%c%c%c%c id:%u rev:%u",
		(char) (n0 & 0xff), (char) ((n0 >> 8) & 0xff),
		(char) ((n0 >> 16) & 0xff), (char) ((n0 >> 24) & 0xff),
		(char) (n1 & 0xff), (char) ((n1 >> 8) & 0xff),
		(char) ((n1 >> 16) & 0xff), (char) ((n1 >> 24) & 0xff),
		(id >> CHIP_ID_ID_SHIFT) & CHIP_ID_ID_MASK,
		(id & CHIP_ID_REV_MASK));

	ramips_mem_base = RT2880_SDRAM_BASE;
	ramips_mem_size_min = RT288X_MEM_SIZE_MIN;
	ramips_mem_size_max = RT288X_MEM_SIZE_MAX;
}

static struct ramips_gpio_chip rt288x_gpio_chips[] = {
	{
		.chip = {
			.label	= "RT288X-GPIO0",
			.base	= 0,
			.ngpio	= 24,
		},
		.regs = {
			[RAMIPS_GPIO_REG_INT]	= 0x00,
			[RAMIPS_GPIO_REG_EDGE]	= 0x04,
			[RAMIPS_GPIO_REG_RENA]	= 0x08,
			[RAMIPS_GPIO_REG_FENA]	= 0x0c,
			[RAMIPS_GPIO_REG_DATA]	= 0x20,
			[RAMIPS_GPIO_REG_DIR]	= 0x24,
			[RAMIPS_GPIO_REG_POL]	= 0x28,
			[RAMIPS_GPIO_REG_SET]	= 0x2c,
			[RAMIPS_GPIO_REG_RESET]	= 0x30,
			[RAMIPS_GPIO_REG_TOGGLE] = 0x34,
		},
		.map_base = RT2880_PIO_BASE,
		.map_size = RT2880_PIO_SIZE,
	},
	{
		.chip = {
			.label	= "RT288X-GPIO1",
			.base	= 24,
			.ngpio	= 16,
		},
		.regs = {
			[RAMIPS_GPIO_REG_INT]	= 0x38,
			[RAMIPS_GPIO_REG_EDGE]	= 0x3c,
			[RAMIPS_GPIO_REG_RENA]	= 0x40,
			[RAMIPS_GPIO_REG_FENA]	= 0x44,
			[RAMIPS_GPIO_REG_DATA]	= 0x48,
			[RAMIPS_GPIO_REG_DIR]	= 0x4c,
			[RAMIPS_GPIO_REG_POL]	= 0x50,
			[RAMIPS_GPIO_REG_SET]	= 0x54,
			[RAMIPS_GPIO_REG_RESET]	= 0x58,
			[RAMIPS_GPIO_REG_TOGGLE] = 0x5c,
		},
		.map_base = RT2880_PIO_BASE,
		.map_size = RT2880_PIO_SIZE,
	},
	{
		.chip = {
			.label	= "RT288X-GPIO2",
			.base	= 40,
			.ngpio	= 32,
		},
		.regs = {
			[RAMIPS_GPIO_REG_INT]	= 0x60,
			[RAMIPS_GPIO_REG_EDGE]	= 0x64,
			[RAMIPS_GPIO_REG_RENA]	= 0x68,
			[RAMIPS_GPIO_REG_FENA]	= 0x6c,
			[RAMIPS_GPIO_REG_DATA]	= 0x70,
			[RAMIPS_GPIO_REG_DIR]	= 0x74,
			[RAMIPS_GPIO_REG_POL]	= 0x78,
			[RAMIPS_GPIO_REG_SET]	= 0x7c,
			[RAMIPS_GPIO_REG_RESET]	= 0x80,
			[RAMIPS_GPIO_REG_TOGGLE] = 0x84,
		},
		.map_base = RT2880_PIO_BASE,
		.map_size = RT2880_PIO_SIZE,
	},
};

static struct ramips_gpio_data rt288x_gpio_data = {
	.chips = rt288x_gpio_chips,
	.num_chips = ARRAY_SIZE(rt288x_gpio_chips),
};

static void rt288x_gpio_reserve(int first, int last)
{
	for (; first <= last; first++)
		gpio_request(first, "reserved");
}

void __init rt288x_gpio_init(u32 mode)
{
	rt288x_sysc_wr(mode, SYSC_REG_GPIO_MODE);

	ramips_gpio_init(&rt288x_gpio_data);
	if ((mode & RT2880_GPIO_MODE_I2C) == 0)
		rt288x_gpio_reserve(1, 2);

	if ((mode & RT2880_GPIO_MODE_SPI) == 0)
		rt288x_gpio_reserve(3, 6);

	if ((mode & RT2880_GPIO_MODE_UART0) == 0)
		rt288x_gpio_reserve(7, 14);

	if ((mode & RT2880_GPIO_MODE_JTAG) == 0)
		rt288x_gpio_reserve(17, 21);

	if ((mode & RT2880_GPIO_MODE_MDIO) == 0)
		rt288x_gpio_reserve(22, 23);

	if ((mode & RT2880_GPIO_MODE_SDRAM) == 0)
		rt288x_gpio_reserve(24, 39);

	if ((mode & RT2880_GPIO_MODE_PCI) == 0)
		rt288x_gpio_reserve(40, 71);
}