2 * Ralink RT305x SoC specific setup
4 * Copyright (C) 2008-2011 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>
18 #include <asm/mach-ralink/common.h>
19 #include <asm/mach-ralink/ramips_gpio.h>
20 #include <asm/mach-ralink/rt305x.h>
21 #include <asm/mach-ralink/rt305x_regs.h>
23 void __iomem * rt305x_sysc_base;
24 void __iomem * rt305x_memc_base;
26 void __init rt305x_detect_sys_type(void)
32 n0 = rt305x_sysc_rr(SYSC_REG_CHIP_NAME0);
33 n1 = rt305x_sysc_rr(SYSC_REG_CHIP_NAME1);
34 id = rt305x_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 struct ramips_gpio_chip rt305x_gpio_chips[] = {
49 .label = "RT305X-GPIO0",
54 [RAMIPS_GPIO_REG_INT] = 0x00,
55 [RAMIPS_GPIO_REG_EDGE] = 0x04,
56 [RAMIPS_GPIO_REG_RENA] = 0x08,
57 [RAMIPS_GPIO_REG_FENA] = 0x0c,
58 [RAMIPS_GPIO_REG_DATA] = 0x20,
59 [RAMIPS_GPIO_REG_DIR] = 0x24,
60 [RAMIPS_GPIO_REG_POL] = 0x28,
61 [RAMIPS_GPIO_REG_SET] = 0x2c,
62 [RAMIPS_GPIO_REG_RESET] = 0x30,
63 [RAMIPS_GPIO_REG_TOGGLE] = 0x34,
65 .map_base = RT305X_PIO_BASE,
66 .map_size = RT305X_PIO_SIZE,
70 .label = "RT305X-GPIO1",
75 [RAMIPS_GPIO_REG_INT] = 0x38,
76 [RAMIPS_GPIO_REG_EDGE] = 0x3c,
77 [RAMIPS_GPIO_REG_RENA] = 0x40,
78 [RAMIPS_GPIO_REG_FENA] = 0x44,
79 [RAMIPS_GPIO_REG_DATA] = 0x48,
80 [RAMIPS_GPIO_REG_DIR] = 0x4c,
81 [RAMIPS_GPIO_REG_POL] = 0x50,
82 [RAMIPS_GPIO_REG_SET] = 0x54,
83 [RAMIPS_GPIO_REG_RESET] = 0x58,
84 [RAMIPS_GPIO_REG_TOGGLE] = 0x5c,
86 .map_base = RT305X_PIO_BASE,
87 .map_size = RT305X_PIO_SIZE,
91 .label = "RT305X-GPIO2",
96 [RAMIPS_GPIO_REG_INT] = 0x60,
97 [RAMIPS_GPIO_REG_EDGE] = 0x64,
98 [RAMIPS_GPIO_REG_RENA] = 0x68,
99 [RAMIPS_GPIO_REG_FENA] = 0x6c,
100 [RAMIPS_GPIO_REG_DATA] = 0x70,
101 [RAMIPS_GPIO_REG_DIR] = 0x74,
102 [RAMIPS_GPIO_REG_POL] = 0x78,
103 [RAMIPS_GPIO_REG_SET] = 0x7c,
104 [RAMIPS_GPIO_REG_RESET] = 0x80,
105 [RAMIPS_GPIO_REG_TOGGLE] = 0x84,
107 .map_base = RT305X_PIO_BASE,
108 .map_size = RT305X_PIO_SIZE,
112 static struct ramips_gpio_data rt305x_gpio_data = {
113 .chips = rt305x_gpio_chips,
114 .num_chips = ARRAY_SIZE(rt305x_gpio_chips),
117 static void rt305x_gpio_reserve(int first, int last)
119 for (; first <= last; first++)
120 gpio_request(first, "reserved");
123 void __init rt305x_gpio_init(u32 mode)
127 rt305x_sysc_wr(mode, SYSC_REG_GPIO_MODE);
129 ramips_gpio_init(&rt305x_gpio_data);
130 if ((mode & RT305X_GPIO_MODE_I2C) == 0)
131 rt305x_gpio_reserve(RT305X_GPIO_I2C_SD, RT305X_GPIO_I2C_SCLK);
133 if ((mode & RT305X_GPIO_MODE_SPI) == 0)
134 rt305x_gpio_reserve(RT305X_GPIO_SPI_EN, RT305X_GPIO_SPI_CLK);
136 t = mode >> RT305X_GPIO_MODE_UART0_SHIFT;
137 t &= RT305X_GPIO_MODE_UART0_MASK;
139 case RT305X_GPIO_MODE_UARTF:
140 case RT305X_GPIO_MODE_PCM_UARTF:
141 case RT305X_GPIO_MODE_PCM_I2S:
142 case RT305X_GPIO_MODE_I2S_UARTF:
143 rt305x_gpio_reserve(RT305X_GPIO_7, RT305X_GPIO_14);
145 case RT305X_GPIO_MODE_PCM_GPIO:
146 rt305x_gpio_reserve(RT305X_GPIO_10, RT305X_GPIO_14);
148 case RT305X_GPIO_MODE_GPIO_UARTF:
149 case RT305X_GPIO_MODE_GPIO_I2S:
150 rt305x_gpio_reserve(RT305X_GPIO_7, RT305X_GPIO_10);
154 if ((mode & RT305X_GPIO_MODE_UART1) == 0)
155 rt305x_gpio_reserve(RT305X_GPIO_UART1_TXD,
156 RT305X_GPIO_UART1_RXD);
158 if ((mode & RT305X_GPIO_MODE_JTAG) == 0)
159 rt305x_gpio_reserve(RT305X_GPIO_JTAG_TDO, RT305X_GPIO_JTAG_TDI);
161 if ((mode & RT305X_GPIO_MODE_MDIO) == 0)
162 rt305x_gpio_reserve(RT305X_GPIO_MDIO_MDC,
163 RT305X_GPIO_MDIO_MDIO);
165 if ((mode & RT305X_GPIO_MODE_SDRAM) == 0)
166 rt305x_gpio_reserve(RT305X_GPIO_SDRAM_MD16,
167 RT305X_GPIO_SDRAM_MD31);
169 if ((mode & RT305X_GPIO_MODE_RGMII) == 0)
170 rt305x_gpio_reserve(RT305X_GPIO_GE0_TXD0,
171 RT305X_GPIO_GE0_RXCLK);