summaryrefslogtreecommitdiffstats
path: root/arch/arm/mach-lh7a40x/arch-lpd7a40x.c
blob: 12e23277c5ea188bb2d8f76dad34cc504e3feab0 (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
/* arch/arm/mach-lh7a40x/arch-lpd7a40x.c
 *
 *  Copyright (C) 2004 Logic Product Development
 *
 *  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/tty.h>
#include <linux/init.h>
#include <linux/platform_device.h>
#include <linux/interrupt.h>

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

#include "common.h"

static struct resource smc91x_resources[] = {
	[0] = {
		.start	= CPLD00_PHYS,
		.end	= CPLD00_PHYS + CPLD00_SIZE - 1, /* Only needs 16B */
		.flags	= IORESOURCE_MEM,
	},

	[1] = {
		.start	= IRQ_LPD7A40X_ETH_INT,
		.end	= IRQ_LPD7A40X_ETH_INT,
		.flags	= IORESOURCE_IRQ,
	},

};

static struct platform_device smc91x_device = {
	.name		= "smc91x",
	.id		= 0,
	.num_resources	= ARRAY_SIZE(smc91x_resources),
	.resource	= smc91x_resources,
};

static struct resource lh7a40x_usbclient_resources[] = {
	[0] = {
		.start	= USB_PHYS,
		.end	= (USB_PHYS + 0xFF),
		.flags	= IORESOURCE_MEM,
	},
	[1] = {
		.start	= IRQ_USBINTR,
		.end	= IRQ_USBINTR,
		.flags	= IORESOURCE_IRQ,
	},
};

static u64 lh7a40x_usbclient_dma_mask = 0xffffffffUL;

static struct platform_device lh7a40x_usbclient_device = {
	.name		= "lh7a40x_udc",
	.id		= 0,
	.dev		= {
		.dma_mask = &lh7a40x_usbclient_dma_mask,
		.coherent_dma_mask = 0xffffffffUL,
	},
	.num_resources	= ARRAY_SIZE (lh7a40x_usbclient_resources),
	.resource	= lh7a40x_usbclient_resources,
};

#if defined (CONFIG_ARCH_LH7A404)

static struct resource lh7a404_usbhost_resources [] = {
	[0] = {
		.start	= USBH_PHYS,
		.end	= (USBH_PHYS + 0xFF),
		.flags	= IORESOURCE_MEM,
	},
	[1] = {
		.start	= IRQ_USHINTR,
		.end	= IRQ_USHINTR,
		.flags	= IORESOURCE_IRQ,
	},
};

static u64 lh7a404_usbhost_dma_mask = 0xffffffffUL;

static struct platform_device lh7a404_usbhost_device = {
	.name		= "lh7a404-ohci",
	.id		= 0,
	.dev		= {
		.dma_mask = &lh7a404_usbhost_dma_mask,
		.coherent_dma_mask = 0xffffffffUL,
	},
	.num_resources	= ARRAY_SIZE (lh7a404_usbhost_resources),
	.resource	= lh7a404_usbhost_resources,
};

#endif

static struct platform_device *lpd7a40x_devs[] __initdata = {
	&smc91x_device,
	&lh7a40x_usbclient_device,
#if defined (CONFIG_ARCH_LH7A404)
	&lh7a404_usbhost_device,
#endif
};

extern void lpd7a400_map_io (void);

static void __init lpd7a40x_init (void)
{
	CPLD_CONTROL |=     (1<<6); /* Mask USB1 connection IRQ */
	CPLD_CONTROL &= ~(0
			  | (1<<1) /* Disable LCD */
			  | (1<<0) /* Enable WLAN */
		);

	platform_add_devices (lpd7a40x_devs, ARRAY_SIZE (lpd7a40x_devs));
}

static void lh7a40x_ack_cpld_irq (u32 irq)
{
	/* CPLD doesn't have ack capability */
}

static void lh7a40x_mask_cpld_irq (u32 irq)
{
	switch (irq) {
	case IRQ_LPD7A40X_ETH_INT:
		CPLD_INTERRUPTS = CPLD_INTERRUPTS | 0x4;
		break;
	case IRQ_LPD7A400_TS:
		CPLD_INTERRUPTS = CPLD_INTERRUPTS | 0x8;
		break;
	}
}

static void lh7a40x_unmask_cpld_irq (u32 irq)
{
	switch (irq) {
	case IRQ_LPD7A40X_ETH_INT:
		CPLD_INTERRUPTS = CPLD_INTERRUPTS & ~ 0x4;
		break;
	case IRQ_LPD7A400_TS:
		CPLD_INTERRUPTS = CPLD_INTERRUPTS & ~ 0x8;
		break;
	}
}

static struct irqchip lpd7a40x_cpld_chip = {
	.ack	= lh7a40x_ack_cpld_irq,
	.mask	= lh7a40x_mask_cpld_irq,
	.unmask	= lh7a40x_unmask_cpld_irq,
};

static void lpd7a40x_cpld_handler (unsigned int irq, struct irqdesc *desc,
				  struct pt_regs *regs)
{
	unsigned int mask = CPLD_INTERRUPTS;

	desc->chip->ack (irq);

	if ((mask & 0x1) == 0)	/* WLAN */
		IRQ_DISPATCH (IRQ_LPD7A40X_ETH_INT);

	if ((mask & 0x2) == 0)	/* Touch */
		IRQ_DISPATCH (IRQ_LPD7A400_TS);

	desc->chip->unmask (irq); /* Level-triggered need this */
}


void __init lh7a40x_init_board_irq (void)
{
	int irq;

		/* Rev A (v2.8): PF0, PF1, PF2, and PF3 are available IRQs.
		                 PF7 supports the CPLD.
		   Rev B (v3.4): PF0, PF1, and PF2 are available IRQs.
		                 PF3 supports the CPLD.
		   (Some) LPD7A404 prerelease boards report a version
		   number of 0x16, but we force an override since the
		   hardware is of the newer variety.
		*/

	unsigned char cpld_version = CPLD_REVISION;
	int pinCPLD = (cpld_version == 0x28) ? 7 : 3;

#if defined CONFIG_MACH_LPD7A404
	cpld_version = 0x34;	/* Coerce LPD7A404 to RevB */
#endif

		/* First, configure user controlled GPIOF interrupts  */

	GPIO_PFDD	&= ~0x0f; /* PF0-3 are inputs */
	GPIO_INTTYPE1	&= ~0x0f; /* PF0-3 are level triggered */
	GPIO_INTTYPE2	&= ~0x0f; /* PF0-3 are active low */
	barrier ();
	GPIO_GPIOFINTEN |=  0x0f; /* Enable PF0, PF1, PF2, and PF3 IRQs */

		/* Then, configure CPLD interrupt */

	CPLD_INTERRUPTS	=   0x9c; /* Disable all CPLD interrupts */
	GPIO_PFDD	&= ~(1 << pinCPLD); /* Make input */
	GPIO_INTTYPE1	|=  (1 << pinCPLD); /* Edge triggered */
	GPIO_INTTYPE2	&= ~(1 << pinCPLD); /* Active low */
	barrier ();
	GPIO_GPIOFINTEN |=  (1 << pinCPLD); /* Enable */

		/* Cascade CPLD interrupts */

	for (irq = IRQ_BOARD_START;
	     irq < IRQ_BOARD_START + NR_IRQ_BOARD; ++irq) {
		set_irq_chip (irq, &lpd7a40x_cpld_chip);
		set_irq_handler (irq, do_edge_IRQ);
		set_irq_flags (irq, IRQF_VALID);
	}

	set_irq_chained_handler ((cpld_version == 0x28)
				 ? IRQ_CPLD_V28
				 : IRQ_CPLD_V34,
				 lpd7a40x_cpld_handler);
}

static struct map_desc lpd7a400_io_desc[] __initdata = {
	{
		.virtual	=     IO_VIRT,
		.pfn		= __phys_to_pfn(IO_PHYS),
		.length		= 	    IO_SIZE,
		.type		= MT_DEVICE
	}, {	/* Mapping added to work around chip select problems */
		.virtual	= IOBARRIER_VIRT,
		.pfn		= __phys_to_pfn(IOBARRIER_PHYS),
		.length		= IOBARRIER_SIZE,
		.type		= MT_DEVICE
	}, {
		.virtual	= CF_VIRT,
		.pfn		= __phys_to_pfn(CF_PHYS),
		.length		= 	CF_SIZE,
		.type		= MT_DEVICE
	}, {
		.virtual	= CPLD02_VIRT,
		.pfn		= __phys_to_pfn(CPLD02_PHYS),
		.length		= 	CPLD02_SIZE,
		.type		= MT_DEVICE
	}, {
		.virtual	= CPLD06_VIRT,
		.pfn		= __phys_to_pfn(CPLD06_PHYS),
		.length		= 	CPLD06_SIZE,
		.type		= MT_DEVICE
	}, {
		.virtual	= CPLD08_VIRT,
		.pfn		= __phys_to_pfn(CPLD08_PHYS),
		.length		= 	CPLD08_SIZE,
		.type		= MT_DEVICE
	}, {
		.virtual	= CPLD0C_VIRT,
		.pfn		= __phys_to_pfn(CPLD0C_PHYS),
		.length		= 	CPLD0C_SIZE,
		.type		= MT_DEVICE
	}, {
		.virtual	= CPLD0E_VIRT,
		.pfn		= __phys_to_pfn(CPLD0E_PHYS),
		.length		= 	CPLD0E_SIZE,
		.type		= MT_DEVICE
	}, {
		.virtual	= CPLD10_VIRT,
		.pfn		= __phys_to_pfn(CPLD10_PHYS),
		.length		= 	CPLD10_SIZE,
		.type		= MT_DEVICE
	}, {
		.virtual	= CPLD12_VIRT,
		.pfn		= __phys_to_pfn(CPLD12_PHYS),
		.length		= 	CPLD12_SIZE,
		.type		= MT_DEVICE
	}, {
		.virtual	= CPLD14_VIRT,
		.pfn		= __phys_to_pfn(CPLD14_PHYS),
		.length		= 	CPLD14_SIZE,
		.type		= MT_DEVICE
	}, {
		.virtual	= CPLD16_VIRT,
		.pfn		= __phys_to_pfn(CPLD16_PHYS),
		.length		= 	CPLD16_SIZE,
		.type		= MT_DEVICE
	}, {
		.virtual	= CPLD18_VIRT,
		.pfn		= __phys_to_pfn(CPLD18_PHYS),
		.length		= 	CPLD18_SIZE,
		.type		= MT_DEVICE
	}, {
		.virtual	= CPLD1A_VIRT,
		.pfn		= __phys_to_pfn(CPLD1A_PHYS),
		.length		= 	CPLD1A_SIZE,
		.type		= MT_DEVICE
	},
	/* This mapping is redundant since the smc driver performs another. */
/*	{ CPLD00_VIRT,  CPLD00_PHYS,	CPLD00_SIZE,	MT_DEVICE }, */
};

void __init
lpd7a400_map_io(void)
{
	iotable_init (lpd7a400_io_desc, ARRAY_SIZE (lpd7a400_io_desc));

		/* Fixup (improve) Static Memory Controller settings */
	SMC_BCR0 = 0x200039af;	/* Boot Flash */
	SMC_BCR6 = 0x1000fbe0;	/* CPLD */
	SMC_BCR7 = 0x1000b2c2;	/* Compact Flash */
}

#ifdef CONFIG_MACH_LPD7A400

MACHINE_START (LPD7A400, "Logic Product Development LPD7A400-10")
	/* Maintainer: Marc Singer */
	.phys_io	= 0x80000000,
	.io_pg_offst	= ((io_p2v (0x80000000))>>18) & 0xfffc,
	.boot_params	= 0xc0000100,
	.map_io		= lpd7a400_map_io,
	.init_irq	= lh7a400_init_irq,
	.timer		= &lh7a40x_timer,
	.init_machine	= lpd7a40x_init,
MACHINE_END

#endif

#ifdef CONFIG_MACH_LPD7A404

MACHINE_START (LPD7A404, "Logic Product Development LPD7A404-10")
	/* Maintainer: Marc Singer */
	.phys_io	= 0x80000000,
	.io_pg_offst	= ((io_p2v (0x80000000))>>18) & 0xfffc,
	.boot_params	= 0xc0000100,
	.map_io		= lpd7a400_map_io,
	.init_irq	= lh7a404_init_irq,
	.timer		= &lh7a40x_timer,
	.init_machine	= lpd7a40x_init,
MACHINE_END

#endif