ramips: move GPIO definitions into a separate header file
[openwrt/svn-archive/archive.git] / target / linux / ramips / files / arch / mips / ralink / rt288x / rt288x.c
1 /*
2 * Ralink RT288x SoC specific setup
3 *
4 * Copyright (C) 2008-2011 Gabor Juhos <juhosg@openwrt.org>
5 * Copyright (C) 2008 Imre Kaloz <kaloz@openwrt.org>
6 *
7 * Parts of this file are based on Ralink's 2.6.21 BSP
8 *
9 * This program is free software; you can redistribute it and/or modify it
10 * under the terms of the GNU General Public License version 2 as published
11 * by the Free Software Foundation.
12 */
13
14 #include <linux/kernel.h>
15 #include <linux/init.h>
16 #include <linux/module.h>
17
18 #include <asm/mach-ralink/common.h>
19 #include <asm/mach-ralink/ramips_gpio.h>
20 #include <asm/mach-ralink/rt288x.h>
21 #include <asm/mach-ralink/rt288x_regs.h>
22
23 void __iomem * rt288x_sysc_base;
24 void __iomem * rt288x_memc_base;
25
26 void __init rt288x_detect_sys_type(void)
27 {
28 u32 n0;
29 u32 n1;
30 u32 id;
31
32 n0 = rt288x_sysc_rr(SYSC_REG_CHIP_NAME0);
33 n1 = rt288x_sysc_rr(SYSC_REG_CHIP_NAME1);
34 id = rt288x_sysc_rr(SYSC_REG_CHIP_ID);
35
36 snprintf(ramips_sys_type, RAMIPS_SYS_TYPE_LEN,
37 "Ralink %c%c%c%c%c%c%c%c id:%u rev:%u",
38 (char) (n0 & 0xff), (char) ((n0 >> 8) & 0xff),
39 (char) ((n0 >> 16) & 0xff), (char) ((n0 >> 24) & 0xff),
40 (char) (n1 & 0xff), (char) ((n1 >> 8) & 0xff),
41 (char) ((n1 >> 16) & 0xff), (char) ((n1 >> 24) & 0xff),
42 (id >> CHIP_ID_ID_SHIFT) & CHIP_ID_ID_MASK,
43 (id & CHIP_ID_REV_MASK));
44 }
45
46 static void rt288x_gpio_reserve(int first, int last)
47 {
48 for (; first <= last; first++)
49 gpio_request(first, "reserved");
50 }
51
52 void __init rt288x_gpio_init(u32 mode)
53 {
54 rt288x_sysc_wr(mode, SYSC_REG_GPIO_MODE);
55
56 ramips_gpio_init();
57 if ((mode & RT2880_GPIO_MODE_I2C) == 0)
58 rt288x_gpio_reserve(1, 2);
59
60 if ((mode & RT2880_GPIO_MODE_SPI) == 0)
61 rt288x_gpio_reserve(3, 6);
62
63 if ((mode & RT2880_GPIO_MODE_UART0) == 0)
64 rt288x_gpio_reserve(7, 14);
65
66 if ((mode & RT2880_GPIO_MODE_JTAG) == 0)
67 rt288x_gpio_reserve(17, 21);
68
69 if ((mode & RT2880_GPIO_MODE_MDIO) == 0)
70 rt288x_gpio_reserve(22, 23);
71
72 if ((mode & RT2880_GPIO_MODE_SDRAM) == 0)
73 rt288x_gpio_reserve(24, 39);
74
75 if ((mode & RT2880_GPIO_MODE_PCI) == 0)
76 rt288x_gpio_reserve(40, 71);
77 }