Merge branch 'upstream' of git://ftp.linux-mips.org/pub/scm/upstream-apm
[linux-2.6] / arch / avr32 / boards / atstk1000 / atstk1002.c
1 /*
2  * ATSTK1002 daughterboard-specific init code
3  *
4  * Copyright (C) 2005-2006 Atmel Corporation
5  *
6  * This program is free software; you can redistribute it and/or modify
7  * it under the terms of the GNU General Public License version 2 as
8  * published by the Free Software Foundation.
9  */
10 #include <linux/clk.h>
11 #include <linux/device.h>
12 #include <linux/etherdevice.h>
13 #include <linux/init.h>
14 #include <linux/kernel.h>
15 #include <linux/platform_device.h>
16 #include <linux/string.h>
17 #include <linux/types.h>
18 #include <linux/spi/spi.h>
19
20 #include <asm/io.h>
21 #include <asm/setup.h>
22 #include <asm/arch/at32ap7000.h>
23 #include <asm/arch/board.h>
24 #include <asm/arch/init.h>
25 #include <asm/arch/portmux.h>
26
27
28 #define SW2_DEFAULT             /* MMCI and UART_A available */
29
30 struct eth_addr {
31         u8 addr[6];
32 };
33
34 static struct eth_addr __initdata hw_addr[2];
35
36 static struct eth_platform_data __initdata eth_data[2];
37 extern struct lcdc_platform_data atstk1000_fb0_data;
38
39 static struct spi_board_info spi_board_info[] __initdata = {
40         {
41                 .modalias       = "ltv350qv",
42                 .controller_data = (void *)GPIO_PIN_PA(4),
43                 .max_speed_hz   = 16000000,
44                 .bus_num        = 0,
45                 .chip_select    = 1,
46         },
47 };
48
49 /*
50  * The next two functions should go away as the boot loader is
51  * supposed to initialize the macb address registers with a valid
52  * ethernet address. But we need to keep it around for a while until
53  * we can be reasonably sure the boot loader does this.
54  *
55  * The phy_id is ignored as the driver will probe for it.
56  */
57 static int __init parse_tag_ethernet(struct tag *tag)
58 {
59         int i;
60
61         i = tag->u.ethernet.mac_index;
62         if (i < ARRAY_SIZE(hw_addr))
63                 memcpy(hw_addr[i].addr, tag->u.ethernet.hw_address,
64                        sizeof(hw_addr[i].addr));
65
66         return 0;
67 }
68 __tagtable(ATAG_ETHERNET, parse_tag_ethernet);
69
70 static void __init set_hw_addr(struct platform_device *pdev)
71 {
72         struct resource *res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
73         const u8 *addr;
74         void __iomem *regs;
75         struct clk *pclk;
76
77         if (!res)
78                 return;
79         if (pdev->id >= ARRAY_SIZE(hw_addr))
80                 return;
81
82         addr = hw_addr[pdev->id].addr;
83         if (!is_valid_ether_addr(addr))
84                 return;
85
86         /*
87          * Since this is board-specific code, we'll cheat and use the
88          * physical address directly as we happen to know that it's
89          * the same as the virtual address.
90          */
91         regs = (void __iomem __force *)res->start;
92         pclk = clk_get(&pdev->dev, "pclk");
93         if (!pclk)
94                 return;
95
96         clk_enable(pclk);
97         __raw_writel((addr[3] << 24) | (addr[2] << 16)
98                      | (addr[1] << 8) | addr[0], regs + 0x98);
99         __raw_writel((addr[5] << 8) | addr[4], regs + 0x9c);
100         clk_disable(pclk);
101         clk_put(pclk);
102 }
103
104 void __init setup_board(void)
105 {
106 #ifdef  SW2_DEFAULT
107         at32_map_usart(1, 0);   /* USART 1/A: /dev/ttyS0, DB9 */
108 #else
109         at32_map_usart(0, 1);   /* USART 0/B: /dev/ttyS1, IRDA */
110 #endif
111         /* USART 2/unused: expansion connector */
112         at32_map_usart(3, 2);   /* USART 3/C: /dev/ttyS2, DB9 */
113
114         at32_setup_serial_console(0);
115 }
116
117 static int __init atstk1002_init(void)
118 {
119         /*
120          * ATSTK1000 uses 32-bit SDRAM interface. Reserve the
121          * SDRAM-specific pins so that nobody messes with them.
122          */
123         at32_reserve_pin(GPIO_PIN_PE(0));       /* DATA[16]     */
124         at32_reserve_pin(GPIO_PIN_PE(1));       /* DATA[17]     */
125         at32_reserve_pin(GPIO_PIN_PE(2));       /* DATA[18]     */
126         at32_reserve_pin(GPIO_PIN_PE(3));       /* DATA[19]     */
127         at32_reserve_pin(GPIO_PIN_PE(4));       /* DATA[20]     */
128         at32_reserve_pin(GPIO_PIN_PE(5));       /* DATA[21]     */
129         at32_reserve_pin(GPIO_PIN_PE(6));       /* DATA[22]     */
130         at32_reserve_pin(GPIO_PIN_PE(7));       /* DATA[23]     */
131         at32_reserve_pin(GPIO_PIN_PE(8));       /* DATA[24]     */
132         at32_reserve_pin(GPIO_PIN_PE(9));       /* DATA[25]     */
133         at32_reserve_pin(GPIO_PIN_PE(10));      /* DATA[26]     */
134         at32_reserve_pin(GPIO_PIN_PE(11));      /* DATA[27]     */
135         at32_reserve_pin(GPIO_PIN_PE(12));      /* DATA[28]     */
136         at32_reserve_pin(GPIO_PIN_PE(13));      /* DATA[29]     */
137         at32_reserve_pin(GPIO_PIN_PE(14));      /* DATA[30]     */
138         at32_reserve_pin(GPIO_PIN_PE(15));      /* DATA[31]     */
139         at32_reserve_pin(GPIO_PIN_PE(26));      /* SDCS         */
140
141         at32_add_system_devices();
142
143 #ifdef  SW2_DEFAULT
144         at32_add_device_usart(0);
145 #else
146         at32_add_device_usart(1);
147 #endif
148         at32_add_device_usart(2);
149
150         set_hw_addr(at32_add_device_eth(0, &eth_data[0]));
151
152         spi_register_board_info(spi_board_info, ARRAY_SIZE(spi_board_info));
153         at32_add_device_spi(0);
154         at32_add_device_lcdc(0, &atstk1000_fb0_data);
155
156         return 0;
157 }
158 postcore_initcall(atstk1002_init);