aboutsummaryrefslogtreecommitdiffstats
path: root/arch/avr32/boards/atstk1000/atstk1002.c
blob: d47e39f0e971925f81cba2588fa185b5829ed1a0 (plain) (blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
/*
 * ATSTK1002 daughterboard-specific init code
 *
 * Copyright (C) 2005-2006 Atmel Corporation
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2 as
 * published by the Free Software Foundation.
 */
#include <linux/clk.h>
#include <linux/device.h>
#include <linux/etherdevice.h>
#include <linux/init.h>
#include <linux/kernel.h>
#include <linux/platform_device.h>
#include <linux/string.h>
#include <linux/types.h>
#include <linux/spi/spi.h>

#include <asm/io.h>
#include <asm/setup.h>
#include <asm/arch/at32ap7000.h>
#include <asm/arch/board.h>
#include <asm/arch/init.h>
#include <asm/arch/portmux.h>


#define	SW2_DEFAULT		/* MMCI and UART_A available */

struct eth_addr {
	u8 addr[6];
};

static struct eth_addr __initdata hw_addr[2];

static struct eth_platform_data __initdata eth_data[2];
extern struct lcdc_platform_data atstk1000_fb0_data;

static struct spi_board_info spi_board_info[] __initdata = {
	{
		.modalias	= "ltv350qv",
		.controller_data = (void *)GPIO_PIN_PA(4),
		.max_speed_hz	= 16000000,
		.bus_num	= 0,
		.chip_select	= 1,
	},
};

/*
 * The next two functions should go away as the boot loader is
 * supposed to initialize the macb address registers with a valid
 * ethernet address. But we need to keep it around for a while until
 * we can be reasonably sure the boot loader does this.
 *
 * The phy_id is ignored as the driver will probe for it.
 */
static int __init parse_tag_ethernet(struct tag *tag)
{
	int i;

	i = tag->u.ethernet.mac_index;
	if (i < ARRAY_SIZE(hw_addr))
		memcpy(hw_addr[i].addr, tag->u.ethernet.hw_address,
		       sizeof(hw_addr[i].addr));

	return 0;
}
__tagtable(ATAG_ETHERNET, parse_tag_ethernet);

static void __init set_hw_addr(struct platform_device *pdev)
{
	struct resource *res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
	const u8 *addr;
	void __iomem *regs;
	struct clk *pclk;

	if (!res)
		return;
	if (pdev->id >= ARRAY_SIZE(hw_addr))
		return;

	addr = hw_addr[pdev->id].addr;
	if (!is_valid_ether_addr(addr))
		return;

	/*
	 * Since this is board-specific code, we'll cheat and use the
	 * physical address directly as we happen to know that it's
	 * the same as the virtual address.
	 */
	regs = (void __iomem __force *)res->start;
	pclk = clk_get(&pdev->dev, "pclk");
	if (!pclk)
		return;

	clk_enable(pclk);
	__raw_writel((addr[3] << 24) | (addr[2] << 16)
		     | (addr[1] << 8) | addr[0], regs + 0x98);
	__raw_writel((addr[5] << 8) | addr[4], regs + 0x9c);
	clk_disable(pclk);
	clk_put(pclk);
}

void __init setup_board(void)
{
#ifdef	SW2_DEFAULT
	at32_map_usart(1, 0);	/* USART 1/A: /dev/ttyS0, DB9 */
#else
	at32_map_usart(0, 1);	/* USART 0/B: /dev/ttyS1, IRDA */
#endif
	/* USART 2/unused: expansion connector */
	at32_map_usart(3, 2);	/* USART 3/C: /dev/ttyS2, DB9 */

	at32_setup_serial_console(0);
}

static int __init atstk1002_init(void)
{
	/*
	 * ATSTK1000 uses 32-bit SDRAM interface. Reserve the
	 * SDRAM-specific pins so that nobody messes with them.
	 */
	at32_reserve_pin(GPIO_PIN_PE(0));	/* DATA[16]	*/
	at32_reserve_pin(GPIO_PIN_PE(1));	/* DATA[17]	*/
	at32_reserve_pin(GPIO_PIN_PE(2));	/* DATA[18]	*/
	at32_reserve_pin(GPIO_PIN_PE(3));	/* DATA[19]	*/
	at32_reserve_pin(GPIO_PIN_PE(4));	/* DATA[20]	*/
	at32_reserve_pin(GPIO_PIN_PE(5));	/* DATA[21]	*/
	at32_reserve_pin(GPIO_PIN_PE(6));	/* DATA[22]	*/
	at32_reserve_pin(GPIO_PIN_PE(7));	/* DATA[23]	*/
	at32_reserve_pin(GPIO_PIN_PE(8));	/* DATA[24]	*/
	at32_reserve_pin(GPIO_PIN_PE(9));	/* DATA[25]	*/
	at32_reserve_pin(GPIO_PIN_PE(10));	/* DATA[26]	*/
	at32_reserve_pin(GPIO_PIN_PE(11));	/* DATA[27]	*/
	at32_reserve_pin(GPIO_PIN_PE(12));	/* DATA[28]	*/
	at32_reserve_pin(GPIO_PIN_PE(13));	/* DATA[29]	*/
	at32_reserve_pin(GPIO_PIN_PE(14));	/* DATA[30]	*/
	at32_reserve_pin(GPIO_PIN_PE(15));	/* DATA[31]	*/
	at32_reserve_pin(GPIO_PIN_PE(26));	/* SDCS		*/

	at32_add_system_devices();

#ifdef	SW2_DEFAULT
	at32_add_device_usart(0);
#else
	at32_add_device_usart(1);
#endif
	at32_add_device_usart(2);

	set_hw_addr(at32_add_device_eth(0, &eth_data[0]));

	spi_register_board_info(spi_board_info, ARRAY_SIZE(spi_board_info));
	at32_add_device_spi(0);
	at32_add_device_lcdc(0, &atstk1000_fb0_data);

	return 0;
}
postcore_initcall(atstk1002_init);