summaryrefslogtreecommitdiffstats
path: root/arch/avr32/boards/atstk1000/atstk1002.c
blob: 2481d2389873d45de60f700f90eb440b4081ddfe (plain)
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
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
/*
 * 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/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 <linux/spi/at73c213.h>

#include <video/atmel_lcdc.h>

#include <asm/io.h>
#include <asm/setup.h>
#include <asm/arch/at32ap700x.h>
#include <asm/arch/board.h>
#include <asm/arch/init.h>
#include <asm/arch/portmux.h>

#include "atstk1000.h"


struct eth_addr {
	u8 addr[6];
};

static struct eth_addr __initdata hw_addr[2];
static struct eth_platform_data __initdata eth_data[2] = {
	{
		/*
		 * The MDIO pullups on STK1000 are a bit too weak for
		 * the autodetection to work properly, so we have to
		 * mask out everything but the correct address.
		 */
		.phy_mask	= ~(1U << 16),
	},
	{
		.phy_mask	= ~(1U << 17),
	},
};

#ifndef CONFIG_BOARD_ATSTK1002_SW1_CUSTOM
#ifndef CONFIG_BOARD_ATSTK1002_SW3_CUSTOM
static struct at73c213_board_info at73c213_data = {
	.ssc_id		= 0,
	.shortname	= "AVR32 STK1000 external DAC",
};
#endif
#endif

#ifndef CONFIG_BOARD_ATSTK1002_SW1_CUSTOM
static struct spi_board_info spi0_board_info[] __initdata = {
#ifndef CONFIG_BOARD_ATSTK1002_SW3_CUSTOM
	{
		/* AT73C213 */
		.modalias	= "at73c213",
		.max_speed_hz	= 200000,
		.chip_select	= 0,
		.mode		= SPI_MODE_1,
		.platform_data	= &at73c213_data,
	},
#endif
	{
		/* QVGA display */
		.modalias	= "ltv350qv",
		.max_speed_hz	= 16000000,
		.chip_select	= 1,
		.mode		= SPI_MODE_3,
	},
};
#endif

#ifdef CONFIG_BOARD_ATSTK1002_SPI1
static struct spi_board_info spi1_board_info[] __initdata = { {
	/* patch in custom entries here */
} };
#endif

/*
 * 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);
}

#ifndef CONFIG_BOARD_ATSTK1002_SW1_CUSTOM
#ifndef CONFIG_BOARD_ATSTK1002_SW3_CUSTOM
static void __init at73c213_set_clk(struct at73c213_board_info *info)
{
	struct clk *gclk;
	struct clk *pll;

	gclk = clk_get(NULL, "gclk0");
	if (IS_ERR(gclk))
		goto err_gclk;
	pll = clk_get(NULL, "pll0");
	if (IS_ERR(pll))
		goto err_pll;

	if (clk_set_parent(gclk, pll)) {
		pr_debug("STK1000: failed to set pll0 as parent for DAC clock\n");
		goto err_set_clk;
	}

	at32_select_periph(GPIO_PIN_PA(30), GPIO_PERIPH_A, 0);
	info->dac_clk = gclk;

err_set_clk:
	clk_put(pll);
err_pll:
	clk_put(gclk);
err_gclk:
	return;
}
#endif
#endif

void __init setup_board(void)
{
#ifdef	CONFIG_BOARD_ATSTK1002_SW2_CUSTOM
	at32_map_usart(0, 1);	/* USART 0/B: /dev/ttyS1, IRDA */
#else
	at32_map_usart(1, 0);	/* USART 1/A: /dev/ttyS0, DB9 */
#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	CONFIG_BOARD_ATSTK1002_SW2_CUSTOM
	at32_add_device_usart(1);
#else
	at32_add_device_usart(0);
#endif
	at32_add_device_usart(2);

#ifndef CONFIG_BOARD_ATSTK1002_SW6_CUSTOM
	set_hw_addr(at32_add_device_eth(0, &eth_data[0]));
#endif
#ifndef CONFIG_BOARD_ATSTK1002_SW1_CUSTOM
	at32_add_device_spi(0, spi0_board_info, ARRAY_SIZE(spi0_board_info));
#endif
#ifdef CONFIG_BOARD_ATSTK1002_SPI1
	at32_add_device_spi(1, spi1_board_info, ARRAY_SIZE(spi1_board_info));
#endif
#ifdef CONFIG_BOARD_ATSTK1002_SW5_CUSTOM
	set_hw_addr(at32_add_device_eth(1, &eth_data[1]));
#else
	at32_add_device_lcdc(0, &atstk1000_lcdc_data,
			     fbmem_start, fbmem_size);
#endif
	at32_add_device_usba(0, NULL);
#ifndef CONFIG_BOARD_ATSTK1002_SW3_CUSTOM
	at32_add_device_ssc(0, ATMEL_SSC_TX);
#endif

	atstk1000_setup_j2_leds();

#ifndef CONFIG_BOARD_ATSTK1002_SW3_CUSTOM
#ifndef CONFIG_BOARD_ATSTK1002_SW1_CUSTOM
	at73c213_set_clk(&at73c213_data);
#endif
#endif

	return 0;
}
postcore_initcall(atstk1002_init);