aboutsummaryrefslogtreecommitdiff
path: root/arch/mips/alchemy/devboards/db1200/platform.c
blob: 5a6ef8deda10b042786187ce5b2f0e0807bb4ffd (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
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
/*
 * DBAu1200 board platform device registration
 *
 * Copyright (C) 2008-2009 Manuel Lauss
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
 */

#include <linux/dma-mapping.h>
#include <linux/gpio.h>
#include <linux/i2c.h>
#include <linux/init.h>
#include <linux/io.h>
#include <linux/leds.h>
#include <linux/mmc/host.h>
#include <linux/mtd/mtd.h>
#include <linux/mtd/nand.h>
#include <linux/mtd/partitions.h>
#include <linux/platform_device.h>
#include <linux/serial_8250.h>
#include <linux/spi/spi.h>
#include <linux/spi/flash.h>
#include <linux/smc91x.h>

#include <asm/mach-au1x00/au1100_mmc.h>
#include <asm/mach-au1x00/au1xxx_dbdma.h>
#include <asm/mach-au1x00/au1550_spi.h>
#include <asm/mach-db1x00/bcsr.h>
#include <asm/mach-db1x00/db1200.h>

#include "../platform.h"

static struct mtd_partition db1200_spiflash_parts[] = {
	{
		.name	= "DB1200 SPI flash",
		.offset	= 0,
		.size	= MTDPART_SIZ_FULL,
	},
};

static struct flash_platform_data db1200_spiflash_data = {
	.name		= "s25fl001",
	.parts		= db1200_spiflash_parts,
	.nr_parts	= ARRAY_SIZE(db1200_spiflash_parts),
	.type		= "m25p10",
};

static struct spi_board_info db1200_spi_devs[] __initdata = {
	{
		/* TI TMP121AIDBVR temp sensor */
		.modalias	= "tmp121",
		.max_speed_hz	= 2000000,
		.bus_num	= 0,
		.chip_select	= 0,
		.mode		= 0,
	},
	{
		/* Spansion S25FL001D0FMA SPI flash */
		.modalias	= "m25p80",
		.max_speed_hz	= 50000000,
		.bus_num	= 0,
		.chip_select	= 1,
		.mode		= 0,
		.platform_data	= &db1200_spiflash_data,
	},
};

static struct i2c_board_info db1200_i2c_devs[] __initdata = {
	{
		/* AT24C04-10 I2C eeprom */
		I2C_BOARD_INFO("24c04", 0x52),
	},
	{
		/* Philips NE1619 temp/voltage sensor (adm1025 drv) */
		I2C_BOARD_INFO("ne1619", 0x2d),
	},
	{
		/* I2S audio codec WM8731 */
		I2C_BOARD_INFO("wm8731", 0x1b),
	},
};

/**********************************************************************/

static void au1200_nand_cmd_ctrl(struct mtd_info *mtd, int cmd,
				 unsigned int ctrl)
{
	struct nand_chip *this = mtd->priv;
	unsigned long ioaddr = (unsigned long)this->IO_ADDR_W;

	ioaddr &= 0xffffff00;

	if (ctrl & NAND_CLE) {
		ioaddr += MEM_STNAND_CMD;
	} else if (ctrl & NAND_ALE) {
		ioaddr += MEM_STNAND_ADDR;
	} else {
		/* assume we want to r/w real data  by default */
		ioaddr += MEM_STNAND_DATA;
	}
	this->IO_ADDR_R = this->IO_ADDR_W = (void __iomem *)ioaddr;
	if (cmd != NAND_CMD_NONE) {
		__raw_writeb(cmd, this->IO_ADDR_W);
		wmb();
	}
}

static int au1200_nand_device_ready(struct mtd_info *mtd)
{
	return __raw_readl((void __iomem *)MEM_STSTAT) & 1;
}

static const char *db1200_part_probes[] = { "cmdlinepart", NULL };

static struct mtd_partition db1200_nand_parts[] = {
	{
		.name	= "NAND FS 0",
		.offset	= 0,
		.size	= 8 * 1024 * 1024,
	},
	{
		.name	= "NAND FS 1",
		.offset	= MTDPART_OFS_APPEND,
		.size	= MTDPART_SIZ_FULL
	},
};

struct platform_nand_data db1200_nand_platdata = {
	.chip = {
		.nr_chips	= 1,
		.chip_offset	= 0,
		.nr_partitions	= ARRAY_SIZE(db1200_nand_parts),
		.partitions	= db1200_nand_parts,
		.chip_delay	= 20,
		.part_probe_types = db1200_part_probes,
	},
	.ctrl = {
		.dev_ready	= au1200_nand_device_ready,
		.cmd_ctrl	= au1200_nand_cmd_ctrl,
	},
};

static struct resource db1200_nand_res[] = {
	[0] = {
		.start	= DB1200_NAND_PHYS_ADDR,
		.end	= DB1200_NAND_PHYS_ADDR + 0xff,
		.flags	= IORESOURCE_MEM,
	},
};

static struct platform_device db1200_nand_dev = {
	.name		= "gen_nand",
	.num_resources	= ARRAY_SIZE(db1200_nand_res),
	.resource	= db1200_nand_res,
	.id		= -1,
	.dev		= {
		.platform_data = &db1200_nand_platdata,
	}
};

/**********************************************************************/

static struct smc91x_platdata db1200_eth_data = {
	.flags	= SMC91X_NOWAIT | SMC91X_USE_16BIT,
	.leda	= RPC_LED_100_10,
	.ledb	= RPC_LED_TX_RX,
};

static struct resource db1200_eth_res[] = {
	[0] = {
		.start	= DB1200_ETH_PHYS_ADDR,
		.end	= DB1200_ETH_PHYS_ADDR + 0xf,
		.flags	= IORESOURCE_MEM,
	},
	[1] = {
		.start	= DB1200_ETH_INT,
		.end	= DB1200_ETH_INT,
		.flags	= IORESOURCE_IRQ,
	},
};

static struct platform_device db1200_eth_dev = {
	.dev	= {
		.platform_data	= &db1200_eth_data,
	},
	.name		= "smc91x",
	.id		= -1,
	.num_resources	= ARRAY_SIZE(db1200_eth_res),
	.resource	= db1200_eth_res,
};

/**********************************************************************/

static struct resource db1200_ide_res[] = {
	[0] = {
		.start	= DB1200_IDE_PHYS_ADDR,
		.end 	= DB1200_IDE_PHYS_ADDR + DB1200_IDE_PHYS_LEN - 1,
		.flags	= IORESOURCE_MEM,
	},
	[1] = {
		.start	= DB1200_IDE_INT,
		.end	= DB1200_IDE_INT,
		.flags	= IORESOURCE_IRQ,
	}
};

static u64 ide_dmamask = DMA_32BIT_MASK;

static struct platform_device db1200_ide_dev = {
	.name		= "au1200-ide",
	.id		= 0,
	.dev = {
		.dma_mask 		= &ide_dmamask,
		.coherent_dma_mask	= DMA_32BIT_MASK,
	},
	.num_resources	= ARRAY_SIZE(db1200_ide_res),
	.resource	= db1200_ide_res,
};

/**********************************************************************/

static struct platform_device db1200_rtc_dev = {
	.name	= "rtc-au1xxx",
	.id	= -1,
};

/**********************************************************************/

/* SD carddetects:  they're supposed to be edge-triggered, but ack
 * doesn't seem to work (CPLD Rev 2).  Instead, the screaming one
 * is disabled and its counterpart enabled.  The 500ms timeout is
 * because the carddetect isn't debounced in hardware.
 */
static irqreturn_t db1200_mmc_cd(int irq, void *ptr)
{
	void(*mmc_cd)(struct mmc_host *, unsigned long);

	if (irq == DB1200_SD0_INSERT_INT) {
		disable_irq_nosync(DB1200_SD0_INSERT_INT);
		enable_irq(DB1200_SD0_EJECT_INT);
	} else {
		disable_irq_nosync(DB1200_SD0_EJECT_INT);
		enable_irq(DB1200_SD0_INSERT_INT);
	}

	/* link against CONFIG_MMC=m */
	mmc_cd = symbol_get(mmc_detect_change);
	if (mmc_cd) {
		mmc_cd(ptr, msecs_to_jiffies(500));
		symbol_put(mmc_detect_change);
	}

	return IRQ_HANDLED;
}

static int db1200_mmc_cd_setup(void *mmc_host, int en)
{
	int ret;

	if (en) {
		ret = request_irq(DB1200_SD0_INSERT_INT, db1200_mmc_cd,
				  IRQF_DISABLED, "sd_insert", mmc_host);
		if (ret)
			goto out;

		ret = request_irq(DB1200_SD0_EJECT_INT, db1200_mmc_cd,
				  IRQF_DISABLED, "sd_eject", mmc_host);
		if (ret) {
			free_irq(DB1200_SD0_INSERT_INT, mmc_host);
			goto out;
		}

		if (bcsr_read(BCSR_SIGSTAT) & BCSR_INT_SD0INSERT)
			enable_irq(DB1200_SD0_EJECT_INT);
		else
			enable_irq(DB1200_SD0_INSERT_INT);

	} else {
		free_irq(DB1200_SD0_INSERT_INT, mmc_host);
		free_irq(DB1200_SD0_EJECT_INT, mmc_host);
	}
	ret = 0;
out:
	return ret;
}

static void db1200_mmc_set_power(void *mmc_host, int state)
{
	if (state) {
		bcsr_mod(BCSR_BOARD, 0, BCSR_BOARD_SD0PWR);
		msleep(400);	/* stabilization time */
	} else
		bcsr_mod(BCSR_BOARD, BCSR_BOARD_SD0PWR, 0);
}

static int db1200_mmc_card_readonly(void *mmc_host)
{
	return (bcsr_read(BCSR_STATUS) & BCSR_STATUS_SD0WP) ? 1 : 0;
}

static int db1200_mmc_card_inserted(void *mmc_host)
{
	return (bcsr_read(BCSR_SIGSTAT) & BCSR_INT_SD0INSERT) ? 1 : 0;
}

static void db1200_mmcled_set(struct led_classdev *led,
			      enum led_brightness brightness)
{
	if (brightness != LED_OFF)
		bcsr_mod(BCSR_LEDS, BCSR_LEDS_LED0, 0);
	else
		bcsr_mod(BCSR_LEDS, 0, BCSR_LEDS_LED0);
}

static struct led_classdev db1200_mmc_led = {
	.brightness_set	= db1200_mmcled_set,
};

/* needed by arch/mips/alchemy/common/platform.c */
struct au1xmmc_platform_data au1xmmc_platdata[] = {
	[0] = {
		.cd_setup	= db1200_mmc_cd_setup,
		.set_power	= db1200_mmc_set_power,
		.card_inserted	= db1200_mmc_card_inserted,
		.card_readonly	= db1200_mmc_card_readonly,
		.led		= &db1200_mmc_led,
	},
};

/**********************************************************************/

static struct resource au1200_psc0_res[] = {
	[0] = {
		.start	= PSC0_PHYS_ADDR,
		.end	= PSC0_PHYS_ADDR + 0x000fffff,
		.flags	= IORESOURCE_MEM,
	},
	[1] = {
		.start	= AU1200_PSC0_INT,
		.end	= AU1200_PSC0_INT,
		.flags	= IORESOURCE_IRQ,
	},
	[2] = {
		.start	= DSCR_CMD0_PSC0_TX,
		.end	= DSCR_CMD0_PSC0_TX,
		.flags	= IORESOURCE_DMA,
	},
	[3] = {
		.start	= DSCR_CMD0_PSC0_RX,
		.end	= DSCR_CMD0_PSC0_RX,
		.flags	= IORESOURCE_DMA,
	},
};

static struct platform_device db1200_i2c_dev = {
	.name		= "au1xpsc_smbus",
	.id		= 0,	/* bus number */
	.num_resources	= ARRAY_SIZE(au1200_psc0_res),
	.resource	= au1200_psc0_res,
};

static void db1200_spi_cs_en(struct au1550_spi_info *spi, int cs, int pol)
{
	if (cs)
		bcsr_mod(BCSR_RESETS, 0, BCSR_RESETS_SPISEL);
	else
		bcsr_mod(BCSR_RESETS, BCSR_RESETS_SPISEL, 0);
}

static struct au1550_spi_info db1200_spi_platdata = {
	.mainclk_hz	= 50000000,	/* PSC0 clock */
	.num_chipselect = 2,
	.activate_cs	= db1200_spi_cs_en,
};

static u64 spi_dmamask = DMA_32BIT_MASK;

static struct platform_device db1200_spi_dev = {
	.dev	= {
		.dma_mask		= &spi_dmamask,
		.coherent_dma_mask	= DMA_32BIT_MASK,
		.platform_data		= &db1200_spi_platdata,
	},
	.name		= "au1550-spi",
	.id		= 0,	/* bus number */
	.num_resources	= ARRAY_SIZE(au1200_psc0_res),
	.resource	= au1200_psc0_res,
};

static struct platform_device *db1200_devs[] __initdata = {
	NULL,		/* PSC0, selected by S6.8 */
	&db1200_ide_dev,
	&db1200_eth_dev,
	&db1200_rtc_dev,
	&db1200_nand_dev,
};

static int __init db1200_dev_init(void)
{
	unsigned long pfc;
	unsigned short sw;
	int swapped;

	i2c_register_board_info(0, db1200_i2c_devs,
				ARRAY_SIZE(db1200_i2c_devs));
	spi_register_board_info(db1200_spi_devs,
				ARRAY_SIZE(db1200_i2c_devs));

	/* SWITCHES:	S6.8 I2C/SPI selector  (OFF=I2C  ON=SPI)
	 */

	/* NOTE: GPIO215 controls OTG VBUS supply.  In SPI mode however
	 * this pin is claimed by PSC0 (unused though, but pinmux doesn't
	 * allow to free it without crippling the SPI interface).
	 * As a result, in SPI mode, OTG simply won't work (PSC0 uses
	 * it as an input pin which is pulled high on the boards).
	 */
	pfc = __raw_readl((void __iomem *)SYS_PINFUNC) & ~SYS_PINFUNC_P0A;

	/* switch off OTG VBUS supply */
	gpio_request(215, "otg-vbus");
	gpio_direction_output(215, 1);

	printk(KERN_INFO "DB1200 device configuration:\n");

	sw = bcsr_read(BCSR_SWITCHES);
	if (sw & BCSR_SWITCHES_DIP_8) {
		db1200_devs[0] = &db1200_i2c_dev;
		bcsr_mod(BCSR_RESETS, BCSR_RESETS_PSC0MUX, 0);

		pfc |= (2 << 17);	/* GPIO2 block owns GPIO215 */

		printk(KERN_INFO " S6.8 OFF: PSC0 mode I2C\n");
		printk(KERN_INFO "   OTG port VBUS supply available!\n");
	} else {
		db1200_devs[0] = &db1200_spi_dev;
		bcsr_mod(BCSR_RESETS, 0, BCSR_RESETS_PSC0MUX);

		pfc |= (1 << 17);	/* PSC0 owns GPIO215 */

		printk(KERN_INFO " S6.8 ON : PSC0 mode SPI\n");
		printk(KERN_INFO "   OTG port VBUS supply disabled\n");
	}
	__raw_writel(pfc, (void __iomem *)SYS_PINFUNC);
	wmb();

	db1x_register_pcmcia_socket(PCMCIA_ATTR_PSEUDO_PHYS,
				    PCMCIA_ATTR_PSEUDO_PHYS + 0x00040000 - 1,
				    PCMCIA_MEM_PSEUDO_PHYS,
				    PCMCIA_MEM_PSEUDO_PHYS  + 0x00040000 - 1,
				    PCMCIA_IO_PSEUDO_PHYS,
				    PCMCIA_IO_PSEUDO_PHYS   + 0x00001000 - 1,
				    DB1200_PC0_INT,
				    DB1200_PC0_INSERT_INT,
				    /*DB1200_PC0_STSCHG_INT*/0,
				    DB1200_PC0_EJECT_INT,
				    0);

	db1x_register_pcmcia_socket(PCMCIA_ATTR_PSEUDO_PHYS + 0x00400000,
				    PCMCIA_ATTR_PSEUDO_PHYS + 0x00440000 - 1,
				    PCMCIA_MEM_PSEUDO_PHYS  + 0x00400000,
				    PCMCIA_MEM_PSEUDO_PHYS  + 0x00440000 - 1,
				    PCMCIA_IO_PSEUDO_PHYS   + 0x00400000,
				    PCMCIA_IO_PSEUDO_PHYS   + 0x00401000 - 1,
				    DB1200_PC1_INT,
				    DB1200_PC1_INSERT_INT,
				    /*DB1200_PC1_STSCHG_INT*/0,
				    DB1200_PC1_EJECT_INT,
				    1);

	swapped = bcsr_read(BCSR_STATUS) & BCSR_STATUS_DB1200_SWAPBOOT;
	db1x_register_norflash(64 << 20, 2, swapped);

	return platform_add_devices(db1200_devs, ARRAY_SIZE(db1200_devs));
}
device_initcall(db1200_dev_init);

/* au1200fb calls these: STERBT EINEN TRAGISCHEN TOD!!! */
int board_au1200fb_panel(void)
{
	return (bcsr_read(BCSR_SWITCHES) >> 8) & 0x0f;
}

int board_au1200fb_panel_init(void)
{
	/* Apply power */
	bcsr_mod(BCSR_BOARD, 0, BCSR_BOARD_LCDVEE | BCSR_BOARD_LCDVDD |
				BCSR_BOARD_LCDBL);
	return 0;
}

int board_au1200fb_panel_shutdown(void)
{
	/* Remove power */
	bcsr_mod(BCSR_BOARD, BCSR_BOARD_LCDVEE | BCSR_BOARD_LCDVDD |
			     BCSR_BOARD_LCDBL, 0);
	return 0;
}