summaryrefslogtreecommitdiffstats
path: root/arch/avr32/boards/atstk1000/atstk1002.c
blob: 29e5b51a7fd2b8801a23655e17edcff41ade6ab2 (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
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
/*
 * ATSTK1002/ATSTK1006 daughterboard-specific init code
 *
 * Copyright (C) 2005-2007 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/atmel-mci.h>

#include <mach/at32ap700x.h>
#include <mach/board.h>
#include <mach/init.h>
#include <mach/portmux.h>

#include "atstk1000.h"

/* Oscillator frequencies. These are board specific */
unsigned long at32_board_osc_rates[3] = {
	[0] = 32768,	/* 32.768 kHz on RTC osc */
	[1] = 20000000,	/* 20 MHz on osc0 */
	[2] = 12000000,	/* 12 MHz on osc1 */
};

/*
 * The ATSTK1006 daughterboard is very similar to the ATSTK1002. Both
 * have the AT32AP7000 chip on board; the difference is that the
 * STK1006 has 128 MB SDRAM (the STK1002 uses the 8 MB SDRAM chip on
 * the STK1000 motherboard) and 256 MB NAND flash (the STK1002 has
 * none.)
 *
 * The RAM difference is handled by the boot loader, so the only
 * difference we end up handling here is the NAND flash.
 */
#ifdef CONFIG_BOARD_ATSTK1006
#include <linux/mtd/partitions.h>
#include <mach/smc.h>

static struct smc_timing nand_timing __initdata = {
	.ncs_read_setup		= 0,
	.nrd_setup		= 10,
	.ncs_write_setup	= 0,
	.nwe_setup		= 10,

	.ncs_read_pulse		= 30,
	.nrd_pulse		= 15,
	.ncs_write_pulse	= 30,
	.nwe_pulse		= 15,

	.read_cycle		= 30,
	.write_cycle		= 30,

	.ncs_read_recover	= 0,
	.nrd_recover		= 15,
	.ncs_write_recover	= 0,
	/* WE# high -> RE# low min 60 ns */
	.nwe_recover		= 50,
};

static struct smc_config nand_config __initdata = {
	.bus_width		= 1,
	.nrd_controlled		= 1,
	.nwe_controlled		= 1,
	.nwait_mode		= 0,
	.byte_write		= 0,
	.tdf_cycles		= 2,
	.tdf_mode		= 0,
};

static struct mtd_partition nand_partitions[] = {
	{
		.name		= "main",
		.offset		= 0x00000000,
		.size		= MTDPART_SIZ_FULL,
	},
};

static struct mtd_partition *nand_part_info(int size, int *num_partitions)
{
	*num_partitions = ARRAY_SIZE(nand_partitions);
	return nand_partitions;
}

static struct atmel_nand_data atstk1006_nand_data __initdata = {
	.cle		= 21,
	.ale		= 22,
	.rdy_pin	= GPIO_PIN_PB(30),
	.enable_pin	= GPIO_PIN_PB(29),
	.partition_info	= nand_part_info,
};
#endif

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),
	},
};

#ifdef CONFIG_BOARD_ATSTK1000_EXTDAC
static struct at73c213_board_info at73c213_data = {
	.ssc_id		= 0,
	.shortname	= "AVR32 STK1000 external DAC",
};
#endif

#ifndef CONFIG_BOARD_ATSTK100X_SW1_CUSTOM
static struct spi_board_info spi0_board_info[] __initdata = {
#ifdef CONFIG_BOARD_ATSTK1000_EXTDAC
	{
		/* 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_ATSTK100X_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);
}

#ifdef CONFIG_BOARD_ATSTK1000_EXTDAC
static void __init atstk1002_setup_extdac(void)
{
	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_PIOA_BASE, (1 << 30), GPIO_PERIPH_A, 0);
	at73c213_data.dac_clk = gclk;

err_set_clk:
	clk_put(pll);
err_pll:
	clk_put(gclk);
err_gclk:
	return;
}
#else
static void __init atstk1002_setup_extdac(void)
{

}
#endif /* CONFIG_BOARD_ATSTK1000_EXTDAC */

void __init setup_board(void)
{
#ifdef	CONFIG_BOARD_ATSTK100X_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);
}

#ifndef CONFIG_BOARD_ATSTK100X_SW2_CUSTOM

static struct mci_platform_data __initdata mci0_data = {
	.slot[0] = {
		.bus_width	= 4,

/* MMC card detect requires MACB0 *NOT* be used */
#ifdef CONFIG_BOARD_ATSTK1002_SW6_CUSTOM
		.detect_pin	= GPIO_PIN_PC(14), /* gpio30/sdcd */
		.wp_pin		= GPIO_PIN_PC(15), /* gpio31/sdwp */
#else
		.detect_pin	= -ENODEV,
		.wp_pin		= -ENODEV,
#endif	/* SW6 for sd{cd,wp} routing */
	},
};

#endif	/* SW2 for MMC signal routing */

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_ATSTK1006
	smc_set_timing(&nand_config, &nand_timing);
	smc_set_configuration(3, &nand_config);
	at32_add_device_nand(0, &atstk1006_nand_data);
#endif

#ifdef	CONFIG_BOARD_ATSTK100X_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_ATSTK100X_SW1_CUSTOM
	at32_add_device_spi(0, spi0_board_info, ARRAY_SIZE(spi0_board_info));
#endif
#ifdef CONFIG_BOARD_ATSTK100X_SPI1
	at32_add_device_spi(1, spi1_board_info, ARRAY_SIZE(spi1_board_info));
#endif
#ifndef CONFIG_BOARD_ATSTK100X_SW2_CUSTOM
	at32_add_device_mci(0, &mci0_data);
#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,
			     ATMEL_LCDC_PRI_24BIT | ATMEL_LCDC_PRI_CONTROL);
#endif
	at32_add_device_usba(0, NULL);
#ifndef CONFIG_BOARD_ATSTK100X_SW3_CUSTOM
	at32_add_device_ssc(0, ATMEL_SSC_TX);
#endif

	atstk1000_setup_j2_leds();
	atstk1002_setup_extdac();

	return 0;
}
postcore_initcall(atstk1002_init);
OpenPOWER on IntegriCloud