2 * Ralink RT288x SoC specific setup
4 * Copyright (C) 2008-2009 Gabor Juhos <juhosg@openwrt.org>
5 * Copyright (C) 2008 Imre Kaloz <kaloz@openwrt.org>
7 * Parts of this file are based on Ralink's 2.6.21 BSP
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.
14 #include <linux/kernel.h>
15 #include <linux/init.h>
16 #include <linux/module.h>
17 #include <linux/gpio.h>
19 #include <asm/mach-ralink/common.h>
20 #include <asm/mach-ralink/rt288x.h>
21 #include <asm/mach-ralink/rt288x_regs.h>
23 void __iomem * rt288x_sysc_base;
24 void __iomem * rt288x_memc_base;
26 void __init rt288x_detect_sys_type(void)
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);
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));
46 static void rt288x_gpio_reserve(int first, int last)
48 for (; first <= last; first++)
49 gpio_request(first, "reserved");
52 void __init rt288x_gpio_init(u32 mode)
54 rt288x_sysc_wr(mode, SYSC_REG_GPIO_MODE);
57 if ((mode & RT2880_GPIO_MODE_I2C) == 0)
58 rt288x_gpio_reserve(1, 2);
60 if ((mode & RT2880_GPIO_MODE_SPI) == 0)
61 rt288x_gpio_reserve(3, 6);
63 if ((mode & RT2880_GPIO_MODE_UART0) == 0)
64 rt288x_gpio_reserve(7, 14);
66 if ((mode & RT2880_GPIO_MODE_JTAG) == 0)
67 rt288x_gpio_reserve(17, 21);
69 if ((mode & RT2880_GPIO_MODE_MDIO) == 0)
70 rt288x_gpio_reserve(22, 23);
72 if ((mode & RT2880_GPIO_MODE_SDRAM) == 0)
73 rt288x_gpio_reserve(24, 39);
75 if ((mode & RT2880_GPIO_MODE_PCI) == 0)
76 rt288x_gpio_reserve(40, 71);