cb93eabb9c6c4145947df0bda8afaefd0d734340
[linux-2.6.git] / 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/etherdevice.h>
12 #include <linux/init.h>
13 #include <linux/kernel.h>
14 #include <linux/platform_device.h>
15 #include <linux/string.h>
16 #include <linux/types.h>
17 #include <linux/spi/spi.h>
18
19 #include <video/atmel_lcdc.h>
20
21 #include <asm/io.h>
22 #include <asm/setup.h>
23 #include <asm/arch/at32ap7000.h>
24 #include <asm/arch/board.h>
25 #include <asm/arch/init.h>
26 #include <asm/arch/portmux.h>
27
28 #include "atstk1000.h"
29
30
31 struct eth_addr {
32         u8 addr[6];
33 };
34
35 static struct eth_addr __initdata hw_addr[2];
36 static struct eth_platform_data __initdata eth_data[2] = {
37         {
38                 /*
39                  * The MDIO pullups on STK1000 are a bit too weak for
40                  * the autodetection to work properly, so we have to
41                  * mask out everything but the correct address.
42                  */
43                 .phy_mask       = ~(1U << 16),
44         },
45         {
46                 .phy_mask       = ~(1U << 17),
47         },
48 };
49
50 #ifndef CONFIG_BOARD_ATSTK1002_SW1_CUSTOM
51 static struct spi_board_info spi0_board_info[] __initdata = {
52         {
53                 /* QVGA display */
54                 .modalias       = "ltv350qv",
55                 .max_speed_hz   = 16000000,
56                 .chip_select    = 1,
57                 .mode           = SPI_MODE_3,
58         },
59 };
60 #endif
61
62 #ifdef CONFIG_BOARD_ATSTK1002_SPI1
63 static struct spi_board_info spi1_board_info[] __initdata = { {
64         /* patch in custom entries here */
65 } };
66 #endif
67
68 /*
69  * The next two functions should go away as the boot loader is
70  * supposed to initialize the macb address registers with a valid
71  * ethernet address. But we need to keep it around for a while until
72  * we can be reasonably sure the boot loader does this.
73  *
74  * The phy_id is ignored as the driver will probe for it.
75  */
76 static int __init parse_tag_ethernet(struct tag *tag)
77 {
78         int i;
79
80         i = tag->u.ethernet.mac_index;
81         if (i < ARRAY_SIZE(hw_addr))
82                 memcpy(hw_addr[i].addr, tag->u.ethernet.hw_address,
83                        sizeof(hw_addr[i].addr));
84
85         return 0;
86 }
87 __tagtable(ATAG_ETHERNET, parse_tag_ethernet);
88
89 static void __init set_hw_addr(struct platform_device *pdev)
90 {
91         struct resource *res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
92         const u8 *addr;
93         void __iomem *regs;
94         struct clk *pclk;
95
96         if (!res)
97                 return;
98         if (pdev->id >= ARRAY_SIZE(hw_addr))
99                 return;
100
101         addr = hw_addr[pdev->id].addr;
102         if (!is_valid_ether_addr(addr))
103                 return;
104
105         /*
106          * Since this is board-specific code, we'll cheat and use the
107          * physical address directly as we happen to know that it's
108          * the same as the virtual address.
109          */
110         regs = (void __iomem __force *)res->start;
111         pclk = clk_get(&pdev->dev, "pclk");
112         if (!pclk)
113                 return;
114
115         clk_enable(pclk);
116         __raw_writel((addr[3] << 24) | (addr[2] << 16)
117                      | (addr[1] << 8) | addr[0], regs + 0x98);
118         __raw_writel((addr[5] << 8) | addr[4], regs + 0x9c);
119         clk_disable(pclk);
120         clk_put(pclk);
121 }
122
123 void __init setup_board(void)
124 {
125 #ifdef  CONFIG_BOARD_ATSTK1002_SW2_CUSTOM
126         at32_map_usart(0, 1);   /* USART 0/B: /dev/ttyS1, IRDA */
127 #else
128         at32_map_usart(1, 0);   /* USART 1/A: /dev/ttyS0, DB9 */
129 #endif
130         /* USART 2/unused: expansion connector */
131         at32_map_usart(3, 2);   /* USART 3/C: /dev/ttyS2, DB9 */
132
133         at32_setup_serial_console(0);
134 }
135
136 static int __init atstk1002_init(void)
137 {
138         /*
139          * ATSTK1000 uses 32-bit SDRAM interface. Reserve the
140          * SDRAM-specific pins so that nobody messes with them.
141          */
142         at32_reserve_pin(GPIO_PIN_PE(0));       /* DATA[16]     */
143         at32_reserve_pin(GPIO_PIN_PE(1));       /* DATA[17]     */
144         at32_reserve_pin(GPIO_PIN_PE(2));       /* DATA[18]     */
145         at32_reserve_pin(GPIO_PIN_PE(3));       /* DATA[19]     */
146         at32_reserve_pin(GPIO_PIN_PE(4));       /* DATA[20]     */
147         at32_reserve_pin(GPIO_PIN_PE(5));       /* DATA[21]     */
148         at32_reserve_pin(GPIO_PIN_PE(6));       /* DATA[22]     */
149         at32_reserve_pin(GPIO_PIN_PE(7));       /* DATA[23]     */
150         at32_reserve_pin(GPIO_PIN_PE(8));       /* DATA[24]     */
151         at32_reserve_pin(GPIO_PIN_PE(9));       /* DATA[25]     */
152         at32_reserve_pin(GPIO_PIN_PE(10));      /* DATA[26]     */
153         at32_reserve_pin(GPIO_PIN_PE(11));      /* DATA[27]     */
154         at32_reserve_pin(GPIO_PIN_PE(12));      /* DATA[28]     */
155         at32_reserve_pin(GPIO_PIN_PE(13));      /* DATA[29]     */
156         at32_reserve_pin(GPIO_PIN_PE(14));      /* DATA[30]     */
157         at32_reserve_pin(GPIO_PIN_PE(15));      /* DATA[31]     */
158         at32_reserve_pin(GPIO_PIN_PE(26));      /* SDCS         */
159
160         at32_add_system_devices();
161
162 #ifdef  CONFIG_BOARD_ATSTK1002_SW2_CUSTOM
163         at32_add_device_usart(1);
164 #else
165         at32_add_device_usart(0);
166 #endif
167         at32_add_device_usart(2);
168
169 #ifndef CONFIG_BOARD_ATSTK1002_SW6_CUSTOM
170         set_hw_addr(at32_add_device_eth(0, &eth_data[0]));
171 #endif
172 #ifndef CONFIG_BOARD_ATSTK1002_SW1_CUSTOM
173         at32_add_device_spi(0, spi0_board_info, ARRAY_SIZE(spi0_board_info));
174 #endif
175 #ifdef CONFIG_BOARD_ATSTK1002_SPI1
176         at32_add_device_spi(1, spi1_board_info, ARRAY_SIZE(spi1_board_info));
177 #endif
178 #ifdef CONFIG_BOARD_ATSTK1002_SW5_CUSTOM
179         set_hw_addr(at32_add_device_eth(1, &eth_data[1]));
180 #else
181         at32_add_device_lcdc(0, &atstk1000_lcdc_data,
182                              fbmem_start, fbmem_size);
183 #endif
184 #ifndef CONFIG_BOARD_ATSTK1002_SW3_CUSTOM
185         at32_add_device_ssc(0, ATMEL_SSC_TX);
186 #endif
187
188         return 0;
189 }
190 postcore_initcall(atstk1002_init);