summaryrefslogtreecommitdiffstats
path: root/arch/arm/mach-ep93xx/ts72xx.c
blob: c6a533699b003bda6842daacc27a0fa320c63a9f (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
/*
 * arch/arm/mach-ep93xx/ts72xx.c
 * Technologic Systems TS72xx SBC support.
 *
 * Copyright (C) 2006 Lennert Buytenhek <buytenh@wantstofly.org>
 *
 * 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.
 */

#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt

#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/platform_device.h>
#include <linux/io.h>
#include <linux/mtd/platnand.h>
#include <linux/spi/spi.h>
#include <linux/spi/flash.h>
#include <linux/spi/mmc_spi.h>
#include <linux/mmc/host.h>
#include <linux/platform_data/spi-ep93xx.h>

#include <mach/gpio-ep93xx.h>
#include <mach/hardware.h>
#include <mach/irqs.h>
#include <mach/gpio-ep93xx.h>

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

#include "soc.h"
#include "ts72xx.h"

/*************************************************************************
 * IO map
 *************************************************************************/
static struct map_desc ts72xx_io_desc[] __initdata = {
	{
		.virtual	= (unsigned long)TS72XX_MODEL_VIRT_BASE,
		.pfn		= __phys_to_pfn(TS72XX_MODEL_PHYS_BASE),
		.length		= TS72XX_MODEL_SIZE,
		.type		= MT_DEVICE,
	}, {
		.virtual	= (unsigned long)TS72XX_OPTIONS_VIRT_BASE,
		.pfn		= __phys_to_pfn(TS72XX_OPTIONS_PHYS_BASE),
		.length		= TS72XX_OPTIONS_SIZE,
		.type		= MT_DEVICE,
	}, {
		.virtual	= (unsigned long)TS72XX_OPTIONS2_VIRT_BASE,
		.pfn		= __phys_to_pfn(TS72XX_OPTIONS2_PHYS_BASE),
		.length		= TS72XX_OPTIONS2_SIZE,
		.type		= MT_DEVICE,
	}, {
		.virtual	= (unsigned long)TS72XX_CPLDVER_VIRT_BASE,
		.pfn		= __phys_to_pfn(TS72XX_CPLDVER_PHYS_BASE),
		.length		= TS72XX_CPLDVER_SIZE,
		.type		= MT_DEVICE,
	}
};

static void __init ts72xx_map_io(void)
{
	ep93xx_map_io();
	iotable_init(ts72xx_io_desc, ARRAY_SIZE(ts72xx_io_desc));
}


/*************************************************************************
 * NAND flash
 *************************************************************************/
#define TS72XX_NAND_CONTROL_ADDR_LINE	22	/* 0xN0400000 */
#define TS72XX_NAND_BUSY_ADDR_LINE	23	/* 0xN0800000 */

static void ts72xx_nand_hwcontrol(struct nand_chip *chip,
				  int cmd, unsigned int ctrl)
{
	if (ctrl & NAND_CTRL_CHANGE) {
		void __iomem *addr = chip->legacy.IO_ADDR_R;
		unsigned char bits;

		addr += (1 << TS72XX_NAND_CONTROL_ADDR_LINE);

		bits = __raw_readb(addr) & ~0x07;
		bits |= (ctrl & NAND_NCE) << 2;	/* bit 0 -> bit 2 */
		bits |= (ctrl & NAND_CLE);	/* bit 1 -> bit 1 */
		bits |= (ctrl & NAND_ALE) >> 2;	/* bit 2 -> bit 0 */

		__raw_writeb(bits, addr);
	}

	if (cmd != NAND_CMD_NONE)
		__raw_writeb(cmd, chip->legacy.IO_ADDR_W);
}

static int ts72xx_nand_device_ready(struct nand_chip *chip)
{
	void __iomem *addr = chip->legacy.IO_ADDR_R;

	addr += (1 << TS72XX_NAND_BUSY_ADDR_LINE);

	return !!(__raw_readb(addr) & 0x20);
}

#define TS72XX_BOOTROM_PART_SIZE	(SZ_16K)
#define TS72XX_REDBOOT_PART_SIZE	(SZ_2M + SZ_1M)

static struct mtd_partition ts72xx_nand_parts[] = {
	{
		.name		= "TS-BOOTROM",
		.offset		= 0,
		.size		= TS72XX_BOOTROM_PART_SIZE,
		.mask_flags	= MTD_WRITEABLE,	/* force read-only */
	}, {
		.name		= "Linux",
		.offset		= MTDPART_OFS_RETAIN,
		.size		= TS72XX_REDBOOT_PART_SIZE,
				/* leave so much for last partition */
	}, {
		.name		= "RedBoot",
		.offset		= MTDPART_OFS_APPEND,
		.size		= MTDPART_SIZ_FULL,
		.mask_flags	= MTD_WRITEABLE,	/* force read-only */
	},
};

static struct platform_nand_data ts72xx_nand_data = {
	.chip = {
		.nr_chips	= 1,
		.chip_offset	= 0,
		.chip_delay	= 15,
	},
	.ctrl = {
		.cmd_ctrl	= ts72xx_nand_hwcontrol,
		.dev_ready	= ts72xx_nand_device_ready,
	},
};

static struct resource ts72xx_nand_resource[] = {
	{
		.start		= 0,			/* filled in later */
		.end		= 0,			/* filled in later */
		.flags		= IORESOURCE_MEM,
	},
};

static struct platform_device ts72xx_nand_flash = {
	.name			= "gen_nand",
	.id			= -1,
	.dev.platform_data	= &ts72xx_nand_data,
	.resource		= ts72xx_nand_resource,
	.num_resources		= ARRAY_SIZE(ts72xx_nand_resource),
};

void __init ts72xx_register_flash(struct mtd_partition *parts, int n,
				  resource_size_t start)
{
	/*
	 * TS7200 has NOR flash all other TS72xx board have NAND flash.
	 */
	if (board_is_ts7200()) {
		ep93xx_register_flash(2, EP93XX_CS6_PHYS_BASE, SZ_16M);
	} else {
		ts72xx_nand_resource[0].start = start;
		ts72xx_nand_resource[0].end = start + SZ_16M - 1;

		ts72xx_nand_data.chip.partitions = parts;
		ts72xx_nand_data.chip.nr_partitions = n;

		platform_device_register(&ts72xx_nand_flash);
	}
}

/*************************************************************************
 * RTC M48T86
 *************************************************************************/
#define TS72XX_RTC_INDEX_PHYS_BASE	(EP93XX_CS1_PHYS_BASE + 0x00800000)
#define TS72XX_RTC_DATA_PHYS_BASE	(EP93XX_CS1_PHYS_BASE + 0x01700000)

static struct resource ts72xx_rtc_resources[] = {
	DEFINE_RES_MEM(TS72XX_RTC_INDEX_PHYS_BASE, 0x01),
	DEFINE_RES_MEM(TS72XX_RTC_DATA_PHYS_BASE, 0x01),
};

static struct platform_device ts72xx_rtc_device = {
	.name		= "rtc-m48t86",
	.id		= -1,
	.resource	= ts72xx_rtc_resources,
	.num_resources 	= ARRAY_SIZE(ts72xx_rtc_resources),
};

/*************************************************************************
 * Watchdog (in CPLD)
 *************************************************************************/
#define TS72XX_WDT_CONTROL_PHYS_BASE	(EP93XX_CS2_PHYS_BASE + 0x03800000)
#define TS72XX_WDT_FEED_PHYS_BASE	(EP93XX_CS2_PHYS_BASE + 0x03c00000)

static struct resource ts72xx_wdt_resources[] = {
	DEFINE_RES_MEM(TS72XX_WDT_CONTROL_PHYS_BASE, 0x01),
	DEFINE_RES_MEM(TS72XX_WDT_FEED_PHYS_BASE, 0x01),
};

static struct platform_device ts72xx_wdt_device = {
	.name		= "ts72xx-wdt",
	.id		= -1,
	.resource	= ts72xx_wdt_resources,
	.num_resources	= ARRAY_SIZE(ts72xx_wdt_resources),
};

/*************************************************************************
 * ETH
 *************************************************************************/
static struct ep93xx_eth_data __initdata ts72xx_eth_data = {
	.phy_id		= 1,
};

/*************************************************************************
 * SPI SD/MMC host
 *************************************************************************/
#define BK3_EN_SDCARD_PHYS_BASE         0x12400000
#define BK3_EN_SDCARD_PWR 0x0
#define BK3_DIS_SDCARD_PWR 0x0C
static void bk3_mmc_spi_setpower(struct device *dev, unsigned int vdd)
{
	void __iomem *pwr_sd = ioremap(BK3_EN_SDCARD_PHYS_BASE, SZ_4K);

	if (!pwr_sd) {
		pr_err("Failed to enable SD card power!");
		return;
	}

	pr_debug("%s: SD card pwr %s VDD:0x%x\n", __func__,
		 !!vdd ? "ON" : "OFF", vdd);

	if (!!vdd)
		__raw_writeb(BK3_EN_SDCARD_PWR, pwr_sd);
	else
		__raw_writeb(BK3_DIS_SDCARD_PWR, pwr_sd);

	iounmap(pwr_sd);
}

static struct mmc_spi_platform_data bk3_spi_mmc_data = {
	.detect_delay	= 500,
	.powerup_msecs	= 100,
	.ocr_mask	= MMC_VDD_32_33 | MMC_VDD_33_34,
	.caps		= MMC_CAP_NONREMOVABLE,
	.setpower       = bk3_mmc_spi_setpower,
};

/*************************************************************************
 * SPI Bus - SD card access
 *************************************************************************/
static struct spi_board_info bk3_spi_board_info[] __initdata = {
	{
		.modalias		= "mmc_spi",
		.platform_data		= &bk3_spi_mmc_data,
		.max_speed_hz		= 7.4E6,
		.bus_num		= 0,
		.chip_select		= 0,
		.mode			= SPI_MODE_0,
	},
};

/*
 * This is a stub -> the FGPIO[3] pin is not connected on the schematic
 * The all work is performed automatically by !SPI_FRAME (SFRM1) and
 * goes through CPLD
 */
static int bk3_spi_chipselects[] __initdata = {
	EP93XX_GPIO_LINE_F(3),
};

static struct ep93xx_spi_info bk3_spi_master __initdata = {
	.chipselect	= bk3_spi_chipselects,
	.num_chipselect = ARRAY_SIZE(bk3_spi_chipselects),
	.use_dma	= 1,
};

/*************************************************************************
 * TS72XX support code
 *************************************************************************/
#if IS_ENABLED(CONFIG_FPGA_MGR_TS73XX)

/* Relative to EP93XX_CS1_PHYS_BASE */
#define TS73XX_FPGA_LOADER_BASE		0x03c00000

static struct resource ts73xx_fpga_resources[] = {
	{
		.start	= EP93XX_CS1_PHYS_BASE + TS73XX_FPGA_LOADER_BASE,
		.end	= EP93XX_CS1_PHYS_BASE + TS73XX_FPGA_LOADER_BASE + 1,
		.flags	= IORESOURCE_MEM,
	},
};

static struct platform_device ts73xx_fpga_device = {
	.name	= "ts73xx-fpga-mgr",
	.id	= -1,
	.resource = ts73xx_fpga_resources,
	.num_resources = ARRAY_SIZE(ts73xx_fpga_resources),
};

#endif

/*************************************************************************
 * SPI Bus
 *************************************************************************/
static struct spi_board_info ts72xx_spi_devices[] __initdata = {
	{
		.modalias		= "tmp122",
		.max_speed_hz		= 2 * 1000 * 1000,
		.bus_num		= 0,
		.chip_select		= 0,
	},
};

static int ts72xx_spi_chipselects[] __initdata = {
	EP93XX_GPIO_LINE_F(2),		/* DIO_17 */
};

static struct ep93xx_spi_info ts72xx_spi_info __initdata = {
	.chipselect	= ts72xx_spi_chipselects,
	.num_chipselect	= ARRAY_SIZE(ts72xx_spi_chipselects),
};

static void __init ts72xx_init_machine(void)
{
	ep93xx_init_devices();
	ts72xx_register_flash(ts72xx_nand_parts, ARRAY_SIZE(ts72xx_nand_parts),
			      is_ts9420_installed() ?
			      EP93XX_CS7_PHYS_BASE : EP93XX_CS6_PHYS_BASE);
	platform_device_register(&ts72xx_rtc_device);
	platform_device_register(&ts72xx_wdt_device);

	ep93xx_register_eth(&ts72xx_eth_data, 1);
#if IS_ENABLED(CONFIG_FPGA_MGR_TS73XX)
	if (board_is_ts7300())
		platform_device_register(&ts73xx_fpga_device);
#endif
	ep93xx_register_spi(&ts72xx_spi_info, ts72xx_spi_devices,
			    ARRAY_SIZE(ts72xx_spi_devices));
}

MACHINE_START(TS72XX, "Technologic Systems TS-72xx SBC")
	/* Maintainer: Lennert Buytenhek <buytenh@wantstofly.org> */
	.atag_offset	= 0x100,
	.map_io		= ts72xx_map_io,
	.init_irq	= ep93xx_init_irq,
	.init_time	= ep93xx_timer_init,
	.init_machine	= ts72xx_init_machine,
	.init_late	= ep93xx_init_late,
	.restart	= ep93xx_restart,
MACHINE_END

/*************************************************************************
 * EP93xx I2S audio peripheral handling
 *************************************************************************/
static struct resource ep93xx_i2s_resource[] = {
	DEFINE_RES_MEM(EP93XX_I2S_PHYS_BASE, 0x100),
	DEFINE_RES_IRQ_NAMED(IRQ_EP93XX_SAI, "spilink i2s slave"),
};

static struct platform_device ep93xx_i2s_device = {
	.name		= "ep93xx-spilink-i2s",
	.id		= -1,
	.num_resources	= ARRAY_SIZE(ep93xx_i2s_resource),
	.resource	= ep93xx_i2s_resource,
};

/*************************************************************************
 * BK3 support code
 *************************************************************************/
static struct mtd_partition bk3_nand_parts[] = {
	{
		.name		= "System",
		.offset	= 0x00000000,
		.size		= 0x01e00000,
	}, {
		.name		= "Data",
		.offset	= 0x01e00000,
		.size		= 0x05f20000
	}, {
		.name		= "RedBoot",
		.offset	= 0x07d20000,
		.size		= 0x002e0000,
		.mask_flags	= MTD_WRITEABLE,	/* force RO */
	},
};

static void __init bk3_init_machine(void)
{
	ep93xx_init_devices();

	ts72xx_register_flash(bk3_nand_parts, ARRAY_SIZE(bk3_nand_parts),
			      EP93XX_CS6_PHYS_BASE);

	ep93xx_register_eth(&ts72xx_eth_data, 1);

	ep93xx_register_spi(&bk3_spi_master, bk3_spi_board_info,
			    ARRAY_SIZE(bk3_spi_board_info));

	/* Configure ep93xx's I2S to use AC97 pins */
	ep93xx_devcfg_set_bits(EP93XX_SYSCON_DEVCFG_I2SONAC97);
	platform_device_register(&ep93xx_i2s_device);
}

MACHINE_START(BK3, "Liebherr controller BK3.1")
	/* Maintainer: Lukasz Majewski <lukma@denx.de> */
	.atag_offset	= 0x100,
	.map_io		= ts72xx_map_io,
	.init_irq	= ep93xx_init_irq,
	.init_time	= ep93xx_timer_init,
	.init_machine	= bk3_init_machine,
	.init_late	= ep93xx_init_late,
	.restart	= ep93xx_restart,
MACHINE_END