summaryrefslogtreecommitdiff
path: root/arch/arm/mach-omap2/board-h4.c
blob: ef55b45ab7693689adf338a1b45cf5a606b1611f (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
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
/*
 * linux/arch/arm/mach-omap2/board-h4.c
 *
 * Copyright (C) 2005 Nokia Corporation
 * Author: Paul Mundt <paul.mundt@nokia.com>
 *
 * Modified from mach-omap/omap1/board-generic.c
 *
 * 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/kernel.h>
#include <linux/init.h>
#include <linux/platform_device.h>
#include <linux/mtd/mtd.h>
#include <linux/mtd/partitions.h>
#include <linux/delay.h>
#include <linux/workqueue.h>
#include <linux/i2c.h>
#include <linux/i2c/at24.h>
#include <linux/input.h>
#include <linux/err.h>
#include <linux/clk.h>
#include <linux/io.h>

#include <mach/hardware.h>
#include <asm/mach-types.h>
#include <asm/mach/arch.h>
#include <asm/mach/map.h>
#include <asm/mach/flash.h>

#include <mach/control.h>
#include <mach/gpio.h>
#include <mach/gpioexpander.h>
#include <mach/mux.h>
#include <mach/usb.h>
#include <mach/irda.h>
#include <mach/board.h>
#include <mach/common.h>
#include <mach/keypad.h>
#include <mach/menelaus.h>
#include <mach/dma.h>
#include <mach/gpmc.h>

#define H4_FLASH_CS	0
#define H4_SMC91X_CS	1

static unsigned int row_gpios[6] = { 88, 89, 124, 11, 6, 96 };
static unsigned int col_gpios[7] = { 90, 91, 100, 36, 12, 97, 98 };

static int h4_keymap[] = {
	KEY(0, 0, KEY_LEFT),
	KEY(0, 1, KEY_RIGHT),
	KEY(0, 2, KEY_A),
	KEY(0, 3, KEY_B),
	KEY(0, 4, KEY_C),
	KEY(1, 0, KEY_DOWN),
	KEY(1, 1, KEY_UP),
	KEY(1, 2, KEY_E),
	KEY(1, 3, KEY_F),
	KEY(1, 4, KEY_G),
	KEY(2, 0, KEY_ENTER),
	KEY(2, 1, KEY_I),
	KEY(2, 2, KEY_J),
	KEY(2, 3, KEY_K),
	KEY(2, 4, KEY_3),
	KEY(3, 0, KEY_M),
	KEY(3, 1, KEY_N),
	KEY(3, 2, KEY_O),
	KEY(3, 3, KEY_P),
	KEY(3, 4, KEY_Q),
	KEY(4, 0, KEY_R),
	KEY(4, 1, KEY_4),
	KEY(4, 2, KEY_T),
	KEY(4, 3, KEY_U),
	KEY(4, 4, KEY_ENTER),
	KEY(5, 0, KEY_V),
	KEY(5, 1, KEY_W),
	KEY(5, 2, KEY_L),
	KEY(5, 3, KEY_S),
	KEY(5, 4, KEY_ENTER),
	0
};

static struct mtd_partition h4_partitions[] = {
	/* bootloader (U-Boot, etc) in first sector */
	{
	      .name		= "bootloader",
	      .offset		= 0,
	      .size		= SZ_128K,
	      .mask_flags	= MTD_WRITEABLE, /* force read-only */
	},
	/* bootloader params in the next sector */
	{
	      .name		= "params",
	      .offset		= MTDPART_OFS_APPEND,
	      .size		= SZ_128K,
	      .mask_flags	= 0,
	},
	/* kernel */
	{
	      .name		= "kernel",
	      .offset		= MTDPART_OFS_APPEND,
	      .size		= SZ_2M,
	      .mask_flags	= 0
	},
	/* file system */
	{
	      .name		= "filesystem",
	      .offset		= MTDPART_OFS_APPEND,
	      .size		= MTDPART_SIZ_FULL,
	      .mask_flags	= 0
	}
};

static struct flash_platform_data h4_flash_data = {
	.map_name	= "cfi_probe",
	.width		= 2,
	.parts		= h4_partitions,
	.nr_parts	= ARRAY_SIZE(h4_partitions),
};

static struct resource h4_flash_resource = {
	.flags		= IORESOURCE_MEM,
};

static struct platform_device h4_flash_device = {
	.name		= "omapflash",
	.id		= 0,
	.dev		= {
		.platform_data	= &h4_flash_data,
	},
	.num_resources	= 1,
	.resource	= &h4_flash_resource,
};

/* Select between the IrDA and aGPS module
 */
static int h4_select_irda(struct device *dev, int state)
{
	unsigned char expa;
	int err = 0;

	if ((err = read_gpio_expa(&expa, 0x21))) {
		printk(KERN_ERR "Error reading from I/O expander\n");
		return err;
	}

	/* 'P6' enable/disable IRDA_TX and IRDA_RX */
	if (state & IR_SEL) {	/* IrDa */
		if ((err = write_gpio_expa(expa | 0x01, 0x21))) {
			printk(KERN_ERR "Error writing to I/O expander\n");
			return err;
		}
	} else {
		if ((err = write_gpio_expa(expa & ~0x01, 0x21))) {
			printk(KERN_ERR "Error writing to I/O expander\n");
			return err;
		}
	}
	return err;
}

static void set_trans_mode(struct work_struct *work)
{
	struct omap_irda_config *irda_config =
		container_of(work, struct omap_irda_config, gpio_expa.work);
	int mode = irda_config->mode;
	unsigned char expa;
	int err = 0;

	if ((err = read_gpio_expa(&expa, 0x20)) != 0) {
		printk(KERN_ERR "Error reading from I/O expander\n");
	}

	expa &= ~0x01;

	if (!(mode & IR_SIRMODE)) { /* MIR/FIR */
		expa |= 0x01;
	}

	if ((err = write_gpio_expa(expa, 0x20)) != 0) {
		printk(KERN_ERR "Error writing to I/O expander\n");
	}
}

static int h4_transceiver_mode(struct device *dev, int mode)
{
	struct omap_irda_config *irda_config = dev->platform_data;

	irda_config->mode = mode;
	cancel_delayed_work(&irda_config->gpio_expa);
	PREPARE_DELAYED_WORK(&irda_config->gpio_expa, set_trans_mode);
	schedule_delayed_work(&irda_config->gpio_expa, 0);

	return 0;
}

static struct omap_irda_config h4_irda_data = {
	.transceiver_cap	= IR_SIRMODE | IR_MIRMODE | IR_FIRMODE,
	.transceiver_mode	= h4_transceiver_mode,
	.select_irda	 	= h4_select_irda,
	.rx_channel		= OMAP24XX_DMA_UART3_RX,
	.tx_channel		= OMAP24XX_DMA_UART3_TX,
	.dest_start		= OMAP_UART3_BASE,
	.src_start		= OMAP_UART3_BASE,
	.tx_trigger		= OMAP24XX_DMA_UART3_TX,
	.rx_trigger		= OMAP24XX_DMA_UART3_RX,
};

static struct resource h4_irda_resources[] = {
	[0] = {
		.start	= INT_24XX_UART3_IRQ,
		.end	= INT_24XX_UART3_IRQ,
		.flags	= IORESOURCE_IRQ,
	},
};

static struct platform_device h4_irda_device = {
	.name		= "omapirda",
	.id		= -1,
	.dev		= {
		.platform_data	= &h4_irda_data,
	},
	.num_resources	= 1,
	.resource	= h4_irda_resources,
};

static struct omap_kp_platform_data h4_kp_data = {
	.rows		= 6,
	.cols		= 7,
	.keymap 	= h4_keymap,
	.keymapsize 	= ARRAY_SIZE(h4_keymap),
	.rep		= 1,
	.row_gpios 	= row_gpios,
	.col_gpios 	= col_gpios,
};

static struct platform_device h4_kp_device = {
	.name		= "omap-keypad",
	.id		= -1,
	.dev		= {
		.platform_data = &h4_kp_data,
	},
};

static struct platform_device h4_lcd_device = {
	.name		= "lcd_h4",
	.id		= -1,
};

static struct platform_device *h4_devices[] __initdata = {
	&h4_flash_device,
	&h4_irda_device,
	&h4_kp_device,
	&h4_lcd_device,
};

/* 2420 Sysboot setup (2430 is different) */
static u32 get_sysboot_value(void)
{
	return (omap_ctrl_readl(OMAP24XX_CONTROL_STATUS) &
		(OMAP2_SYSBOOT_5_MASK | OMAP2_SYSBOOT_4_MASK |
		 OMAP2_SYSBOOT_3_MASK | OMAP2_SYSBOOT_2_MASK |
		 OMAP2_SYSBOOT_1_MASK | OMAP2_SYSBOOT_0_MASK));
}

/* H4-2420's always used muxed mode, H4-2422's always use non-muxed
 *
 * Note: OMAP-GIT doesn't correctly do is_cpu_omap2422 and is_cpu_omap2423
 *  correctly.  The macro needs to look at production_id not just hawkeye.
 */
static u32 is_gpmc_muxed(void)
{
	u32 mux;
	mux = get_sysboot_value();
	if ((mux & 0xF) == 0xd)
		return 1;	/* NAND config (could be either) */
	if (mux & 0x2)		/* if mux'ed */
		return 1;
	else
		return 0;
}

static inline void __init h4_init_debug(void)
{
	int eth_cs;
	unsigned long cs_mem_base;
	unsigned int muxed, rate;
	struct clk *gpmc_fck;

	eth_cs	= H4_SMC91X_CS;

	gpmc_fck = clk_get(NULL, "gpmc_fck");	/* Always on ENABLE_ON_INIT */
	if (IS_ERR(gpmc_fck)) {
		WARN_ON(1);
		return;
	}

	clk_enable(gpmc_fck);
	rate = clk_get_rate(gpmc_fck);
	clk_disable(gpmc_fck);
	clk_put(gpmc_fck);

	if (is_gpmc_muxed())
		muxed = 0x200;
	else
		muxed = 0;

	/* Make sure CS1 timings are correct */
	gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG1,
			  0x00011000 | muxed);

	if (rate >= 160000000) {
		gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG2, 0x001f1f01);
		gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG3, 0x00080803);
		gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG4, 0x1c0b1c0a);
		gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG5, 0x041f1F1F);
		gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG6, 0x000004C4);
	} else if (rate >= 130000000) {
		gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG2, 0x001f1f00);
		gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG3, 0x00080802);
		gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG4, 0x1C091C09);
		gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG5, 0x041f1F1F);
		gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG6, 0x000004C4);
	} else {/* rate = 100000000 */
		gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG2, 0x001f1f00);
		gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG3, 0x00080802);
		gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG4, 0x1C091C09);
		gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG5, 0x031A1F1F);
		gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG6, 0x000003C2);
	}

	if (gpmc_cs_request(eth_cs, SZ_16M, &cs_mem_base) < 0) {
		printk(KERN_ERR "Failed to request GPMC mem for smc91x\n");
		goto out;
	}

	udelay(100);

	omap_cfg_reg(M15_24XX_GPIO92);
	if (debug_card_init(cs_mem_base, OMAP24XX_ETHR_GPIO_IRQ) < 0)
		gpmc_cs_free(eth_cs);

out:
	clk_disable(gpmc_fck);
	clk_put(gpmc_fck);
}

static void __init h4_init_flash(void)
{
	unsigned long base;

	if (gpmc_cs_request(H4_FLASH_CS, SZ_64M, &base) < 0) {
		printk("Can't request GPMC CS for flash\n");
		return;
	}
	h4_flash_resource.start	= base;
	h4_flash_resource.end	= base + SZ_64M - 1;
}

static void __init omap_h4_init_irq(void)
{
	omap2_init_common_hw(NULL);
	omap_init_irq();
	omap_gpio_init();
	h4_init_flash();
}

static struct omap_uart_config h4_uart_config __initdata = {
	.enabled_uarts = ((1 << 0) | (1 << 1) | (1 << 2)),
};

static struct omap_lcd_config h4_lcd_config __initdata = {
	.ctrl_name	= "internal",
};

static struct omap_board_config_kernel h4_config[] = {
	{ OMAP_TAG_UART,	&h4_uart_config },
	{ OMAP_TAG_LCD,		&h4_lcd_config },
};

static struct at24_platform_data m24c01 = {
	.byte_len	= SZ_1K / 8,
	.page_size	= 16,
};

static struct i2c_board_info __initdata h4_i2c_board_info[] = {
	{
		I2C_BOARD_INFO("isp1301_omap", 0x2d),
		.irq		= OMAP_GPIO_IRQ(125),
	},
	{	/* EEPROM on mainboard */
		I2C_BOARD_INFO("24c01", 0x52),
		.platform_data	= &m24c01,
	},
	{	/* EEPROM on cpu card */
		I2C_BOARD_INFO("24c01", 0x57),
		.platform_data	= &m24c01,
	},
};

static void __init omap_h4_init(void)
{
	/*
	 * Make sure the serial ports are muxed on at this point.
	 * You have to mux them off in device drivers later on
	 * if not needed.
	 */
#if defined(CONFIG_OMAP_IR) || defined(CONFIG_OMAP_IR_MODULE)
	omap_cfg_reg(K15_24XX_UART3_TX);
	omap_cfg_reg(K14_24XX_UART3_RX);
#endif

#if defined(CONFIG_KEYBOARD_OMAP) || defined(CONFIG_KEYBOARD_OMAP_MODULE)
	if (omap_has_menelaus()) {
		row_gpios[5] = 0;
		col_gpios[2] = 15;
		col_gpios[6] = 18;
	}
#endif

	i2c_register_board_info(1, h4_i2c_board_info,
			ARRAY_SIZE(h4_i2c_board_info));

	platform_add_devices(h4_devices, ARRAY_SIZE(h4_devices));
	omap_board_config = h4_config;
	omap_board_config_size = ARRAY_SIZE(h4_config);
	omap_serial_init();
}

static void __init omap_h4_map_io(void)
{
	omap2_set_globals_242x();
	omap2_map_common_io();
}

MACHINE_START(OMAP_H4, "OMAP2420 H4 board")
	/* Maintainer: Paul Mundt <paul.mundt@nokia.com> */
	.phys_io	= 0x48000000,
	.io_pg_offst	= ((0xd8000000) >> 18) & 0xfffc,
	.boot_params	= 0x80000100,
	.map_io		= omap_h4_map_io,
	.init_irq	= omap_h4_init_irq,
	.init_machine	= omap_h4_init,
	.timer		= &omap_timer,
MACHINE_END