[AVR32] Implement platform hooks for atmel_lcdfb driver
[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 #define SW2_DEFAULT             /* MMCI and UART_A available */
31
32 struct eth_addr {
33         u8 addr[6];
34 };
35
36 static struct eth_addr __initdata hw_addr[2];
37 static struct eth_platform_data __initdata eth_data[2];
38
39 static struct spi_board_info spi0_board_info[] __initdata = {
40         {
41                 /* QVGA display */
42                 .modalias       = "ltv350qv",
43                 .max_speed_hz   = 16000000,
44                 .chip_select    = 1,
45         },
46 };
47
48 /*
49  * The next two functions should go away as the boot loader is
50  * supposed to initialize the macb address registers with a valid
51  * ethernet address. But we need to keep it around for a while until
52  * we can be reasonably sure the boot loader does this.
53  *
54  * The phy_id is ignored as the driver will probe for it.
55  */
56 static int __init parse_tag_ethernet(struct tag *tag)
57 {
58         int i;
59
60         i = tag->u.ethernet.mac_index;
61         if (i < ARRAY_SIZE(hw_addr))
62                 memcpy(hw_addr[i].addr, tag->u.ethernet.hw_address,
63                        sizeof(hw_addr[i].addr));
64
65         return 0;
66 }
67 __tagtable(ATAG_ETHERNET, parse_tag_ethernet);
68
69 static void __init set_hw_addr(struct platform_device *pdev)
70 {
71         struct resource *res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
72         const u8 *addr;
73         void __iomem *regs;
74         struct clk *pclk;
75
76         if (!res)
77                 return;
78         if (pdev->id >= ARRAY_SIZE(hw_addr))
79                 return;
80
81         addr = hw_addr[pdev->id].addr;
82         if (!is_valid_ether_addr(addr))
83                 return;
84
85         /*
86          * Since this is board-specific code, we'll cheat and use the
87          * physical address directly as we happen to know that it's
88          * the same as the virtual address.
89          */
90         regs = (void __iomem __force *)res->start;
91         pclk = clk_get(&pdev->dev, "pclk");
92         if (!pclk)
93                 return;
94
95         clk_enable(pclk);
96         __raw_writel((addr[3] << 24) | (addr[2] << 16)
97                      | (addr[1] << 8) | addr[0], regs + 0x98);
98         __raw_writel((addr[5] << 8) | addr[4], regs + 0x9c);
99         clk_disable(pclk);
100         clk_put(pclk);
101 }
102
103 void __init setup_board(void)
104 {
105 #ifdef  SW2_DEFAULT
106         at32_map_usart(1, 0);   /* USART 1/A: /dev/ttyS0, DB9 */
107 #else
108         at32_map_usart(0, 1);   /* USART 0/B: /dev/ttyS1, IRDA */
109 #endif
110         /* USART 2/unused: expansion connector */
111         at32_map_usart(3, 2);   /* USART 3/C: /dev/ttyS2, DB9 */
112
113         at32_setup_serial_console(0);
114 }
115
116 static int __init atstk1002_init(void)
117 {
118         /*
119          * ATSTK1000 uses 32-bit SDRAM interface. Reserve the
120          * SDRAM-specific pins so that nobody messes with them.
121          */
122         at32_reserve_pin(GPIO_PIN_PE(0));       /* DATA[16]     */
123         at32_reserve_pin(GPIO_PIN_PE(1));       /* DATA[17]     */
124         at32_reserve_pin(GPIO_PIN_PE(2));       /* DATA[18]     */
125         at32_reserve_pin(GPIO_PIN_PE(3));       /* DATA[19]     */
126         at32_reserve_pin(GPIO_PIN_PE(4));       /* DATA[20]     */
127         at32_reserve_pin(GPIO_PIN_PE(5));       /* DATA[21]     */
128         at32_reserve_pin(GPIO_PIN_PE(6));       /* DATA[22]     */
129         at32_reserve_pin(GPIO_PIN_PE(7));       /* DATA[23]     */
130         at32_reserve_pin(GPIO_PIN_PE(8));       /* DATA[24]     */
131         at32_reserve_pin(GPIO_PIN_PE(9));       /* DATA[25]     */
132         at32_reserve_pin(GPIO_PIN_PE(10));      /* DATA[26]     */
133         at32_reserve_pin(GPIO_PIN_PE(11));      /* DATA[27]     */
134         at32_reserve_pin(GPIO_PIN_PE(12));      /* DATA[28]     */
135         at32_reserve_pin(GPIO_PIN_PE(13));      /* DATA[29]     */
136         at32_reserve_pin(GPIO_PIN_PE(14));      /* DATA[30]     */
137         at32_reserve_pin(GPIO_PIN_PE(15));      /* DATA[31]     */
138         at32_reserve_pin(GPIO_PIN_PE(26));      /* SDCS         */
139
140         at32_add_system_devices();
141
142 #ifdef  SW2_DEFAULT
143         at32_add_device_usart(0);
144 #else
145         at32_add_device_usart(1);
146 #endif
147         at32_add_device_usart(2);
148
149         set_hw_addr(at32_add_device_eth(0, &eth_data[0]));
150
151         at32_add_device_spi(0, spi0_board_info, ARRAY_SIZE(spi0_board_info));
152         at32_add_device_lcdc(0, &atstk1000_lcdc_data,
153                              fbmem_start, fbmem_size);
154
155         return 0;
156 }
157 postcore_initcall(atstk1002_init);