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
ramips_soc_prom_init(void)
28 void __iomem
*sysc
= (void __iomem
*) KSEG1ADDR(RT305X_SYSC_BASE
);
33 n0
= __raw_readl(sysc
+ SYSC_REG_CHIP_NAME0
);
34 n1
= __raw_readl(sysc
+ SYSC_REG_CHIP_NAME1
);
35 id
= __raw_readl(sysc
+ SYSC_REG_CHIP_ID
);
37 snprintf(ramips_sys_type
, RAMIPS_SYS_TYPE_LEN
,
38 "Ralink %c%c%c%c%c%c%c%c id:%u rev:%u",
39 (char) (n0
& 0xff), (char) ((n0
>> 8) & 0xff),
40 (char) ((n0
>> 16) & 0xff), (char) ((n0
>> 24) & 0xff),
41 (char) (n1
& 0xff), (char) ((n1
>> 8) & 0xff),
42 (char) ((n1
>> 16) & 0xff), (char) ((n1
>> 24) & 0xff),
43 (id
>> CHIP_ID_ID_SHIFT
) & CHIP_ID_ID_MASK
,
44 (id
& CHIP_ID_REV_MASK
));
47 static struct ramips_gpio_chip rt305x_gpio_chips
[] = {
50 .label
= "RT305X-GPIO0",
55 [RAMIPS_GPIO_REG_INT
] = 0x00,
56 [RAMIPS_GPIO_REG_EDGE
] = 0x04,
57 [RAMIPS_GPIO_REG_RENA
] = 0x08,
58 [RAMIPS_GPIO_REG_FENA
] = 0x0c,
59 [RAMIPS_GPIO_REG_DATA
] = 0x20,
60 [RAMIPS_GPIO_REG_DIR
] = 0x24,
61 [RAMIPS_GPIO_REG_POL
] = 0x28,
62 [RAMIPS_GPIO_REG_SET
] = 0x2c,
63 [RAMIPS_GPIO_REG_RESET
] = 0x30,
64 [RAMIPS_GPIO_REG_TOGGLE
] = 0x34,
66 .map_base
= RT305X_PIO_BASE
,
67 .map_size
= RT305X_PIO_SIZE
,
71 .label
= "RT305X-GPIO1",
76 [RAMIPS_GPIO_REG_INT
] = 0x38,
77 [RAMIPS_GPIO_REG_EDGE
] = 0x3c,
78 [RAMIPS_GPIO_REG_RENA
] = 0x40,
79 [RAMIPS_GPIO_REG_FENA
] = 0x44,
80 [RAMIPS_GPIO_REG_DATA
] = 0x48,
81 [RAMIPS_GPIO_REG_DIR
] = 0x4c,
82 [RAMIPS_GPIO_REG_POL
] = 0x50,
83 [RAMIPS_GPIO_REG_SET
] = 0x54,
84 [RAMIPS_GPIO_REG_RESET
] = 0x58,
85 [RAMIPS_GPIO_REG_TOGGLE
] = 0x5c,
87 .map_base
= RT305X_PIO_BASE
,
88 .map_size
= RT305X_PIO_SIZE
,
92 .label
= "RT305X-GPIO2",
97 [RAMIPS_GPIO_REG_INT
] = 0x60,
98 [RAMIPS_GPIO_REG_EDGE
] = 0x64,
99 [RAMIPS_GPIO_REG_RENA
] = 0x68,
100 [RAMIPS_GPIO_REG_FENA
] = 0x6c,
101 [RAMIPS_GPIO_REG_DATA
] = 0x70,
102 [RAMIPS_GPIO_REG_DIR
] = 0x74,
103 [RAMIPS_GPIO_REG_POL
] = 0x78,
104 [RAMIPS_GPIO_REG_SET
] = 0x7c,
105 [RAMIPS_GPIO_REG_RESET
] = 0x80,
106 [RAMIPS_GPIO_REG_TOGGLE
] = 0x84,
108 .map_base
= RT305X_PIO_BASE
,
109 .map_size
= RT305X_PIO_SIZE
,
113 static struct ramips_gpio_data rt305x_gpio_data
= {
114 .chips
= rt305x_gpio_chips
,
115 .num_chips
= ARRAY_SIZE(rt305x_gpio_chips
),
118 static void rt305x_gpio_reserve(int first
, int last
)
120 for (; first
<= last
; first
++)
121 gpio_request(first
, "reserved");
124 void __init
rt305x_gpio_init(u32 mode
)
128 rt305x_sysc_wr(mode
, SYSC_REG_GPIO_MODE
);
130 ramips_gpio_init(&rt305x_gpio_data
);
131 if ((mode
& RT305X_GPIO_MODE_I2C
) == 0)
132 rt305x_gpio_reserve(RT305X_GPIO_I2C_SD
, RT305X_GPIO_I2C_SCLK
);
134 if ((mode
& RT305X_GPIO_MODE_SPI
) == 0)
135 rt305x_gpio_reserve(RT305X_GPIO_SPI_EN
, RT305X_GPIO_SPI_CLK
);
137 t
= mode
>> RT305X_GPIO_MODE_UART0_SHIFT
;
138 t
&= RT305X_GPIO_MODE_UART0_MASK
;
140 case RT305X_GPIO_MODE_UARTF
:
141 case RT305X_GPIO_MODE_PCM_UARTF
:
142 case RT305X_GPIO_MODE_PCM_I2S
:
143 case RT305X_GPIO_MODE_I2S_UARTF
:
144 rt305x_gpio_reserve(RT305X_GPIO_7
, RT305X_GPIO_14
);
146 case RT305X_GPIO_MODE_PCM_GPIO
:
147 rt305x_gpio_reserve(RT305X_GPIO_10
, RT305X_GPIO_14
);
149 case RT305X_GPIO_MODE_GPIO_UARTF
:
150 case RT305X_GPIO_MODE_GPIO_I2S
:
151 rt305x_gpio_reserve(RT305X_GPIO_7
, RT305X_GPIO_10
);
155 if ((mode
& RT305X_GPIO_MODE_UART1
) == 0)
156 rt305x_gpio_reserve(RT305X_GPIO_UART1_TXD
,
157 RT305X_GPIO_UART1_RXD
);
159 if ((mode
& RT305X_GPIO_MODE_JTAG
) == 0)
160 rt305x_gpio_reserve(RT305X_GPIO_JTAG_TDO
, RT305X_GPIO_JTAG_TDI
);
162 if ((mode
& RT305X_GPIO_MODE_MDIO
) == 0)
163 rt305x_gpio_reserve(RT305X_GPIO_MDIO_MDC
,
164 RT305X_GPIO_MDIO_MDIO
);
166 if ((mode
& RT305X_GPIO_MODE_SDRAM
) == 0)
167 rt305x_gpio_reserve(RT305X_GPIO_SDRAM_MD16
,
168 RT305X_GPIO_SDRAM_MD31
);
170 if ((mode
& RT305X_GPIO_MODE_RGMII
) == 0)
171 rt305x_gpio_reserve(RT305X_GPIO_GE0_TXD0
,
172 RT305X_GPIO_GE0_RXCLK
);