summaryrefslogtreecommitdiff
path: root/arch/arm/mach-pxa/mainstone.c
blob: 5d2f76b6df0eb4db90f834ccbfac46a8562a9cef (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
/*
 *  linux/arch/arm/mach-pxa/mainstone.c
 *
 *  Support for the Intel HCDDBBVA0 Development Platform.
 *  (go figure how they came up with such name...)
 *
 *  Author:	Nicolas Pitre
 *  Created:	Nov 05, 2002
 *  Copyright:	MontaVista Software Inc.
 *
 *  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/init.h>
#include <linux/device.h>
#include <linux/sysdev.h>
#include <linux/interrupt.h>
#include <linux/sched.h>
#include <linux/bitops.h>
#include <linux/fb.h>

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

#include <asm/mach/arch.h>
#include <asm/mach/map.h>
#include <asm/mach/irq.h>

#include <asm/arch/pxa-regs.h>
#include <asm/arch/mainstone.h>
#include <asm/arch/audio.h>
#include <asm/arch/pxafb.h>
#include <asm/arch/mmc.h>

#include "generic.h"


static unsigned long mainstone_irq_enabled;

static void mainstone_mask_irq(unsigned int irq)
{
	int mainstone_irq = (irq - MAINSTONE_IRQ(0));
	MST_INTMSKENA = (mainstone_irq_enabled &= ~(1 << mainstone_irq));
}

static void mainstone_unmask_irq(unsigned int irq)
{
	int mainstone_irq = (irq - MAINSTONE_IRQ(0));
	/* the irq can be acknowledged only if deasserted, so it's done here */
	MST_INTSETCLR &= ~(1 << mainstone_irq);
	MST_INTMSKENA = (mainstone_irq_enabled |= (1 << mainstone_irq));
}

static struct irqchip mainstone_irq_chip = {
	.ack		= mainstone_mask_irq,
	.mask		= mainstone_mask_irq,
	.unmask		= mainstone_unmask_irq,
};

static void mainstone_irq_handler(unsigned int irq, struct irqdesc *desc,
				  struct pt_regs *regs)
{
	unsigned long pending = MST_INTSETCLR & mainstone_irq_enabled;
	do {
		GEDR(0) = GPIO_bit(0);  /* clear useless edge notification */
		if (likely(pending)) {
			irq = MAINSTONE_IRQ(0) + __ffs(pending);
			desc = irq_desc + irq;
			desc->handle(irq, desc, regs);
		}
		pending = MST_INTSETCLR & mainstone_irq_enabled;
	} while (pending);
}

static void __init mainstone_init_irq(void)
{
	int irq;

	pxa_init_irq();

	/* setup extra Mainstone irqs */
	for(irq = MAINSTONE_IRQ(0); irq <= MAINSTONE_IRQ(15); irq++) {
		set_irq_chip(irq, &mainstone_irq_chip);
		set_irq_handler(irq, do_level_IRQ);
		set_irq_flags(irq, IRQF_VALID | IRQF_PROBE);
	}
	set_irq_flags(MAINSTONE_IRQ(8), 0);
	set_irq_flags(MAINSTONE_IRQ(12), 0);

	MST_INTMSKENA = 0;
	MST_INTSETCLR = 0;

	set_irq_chained_handler(IRQ_GPIO(0), mainstone_irq_handler);
	set_irq_type(IRQ_GPIO(0), IRQT_FALLING);
}

#ifdef CONFIG_PM

static int mainstone_irq_resume(struct sys_device *dev)
{
	MST_INTMSKENA = mainstone_irq_enabled;
	return 0;
}

static struct sysdev_class mainstone_irq_sysclass = {
	set_kset_name("cpld_irq"),
	.resume = mainstone_irq_resume,
};

static struct sys_device mainstone_irq_device = {
	.cls = &mainstone_irq_sysclass,
};

static int __init mainstone_irq_device_init(void)
{
	int ret = sysdev_class_register(&mainstone_irq_sysclass);
	if (ret == 0)
		ret = sysdev_register(&mainstone_irq_device);
	return ret;
}

device_initcall(mainstone_irq_device_init);

#endif


static struct resource smc91x_resources[] = {
	[0] = {
		.start	= (MST_ETH_PHYS + 0x300),
		.end	= (MST_ETH_PHYS + 0xfffff),
		.flags	= IORESOURCE_MEM,
	},
	[1] = {
		.start	= MAINSTONE_IRQ(3),
		.end	= MAINSTONE_IRQ(3),
		.flags	= IORESOURCE_IRQ,
	}
};

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

static int mst_audio_startup(snd_pcm_substream_t *substream, void *priv)
{
	if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
		MST_MSCWR2 &= ~MST_MSCWR2_AC97_SPKROFF;
	return 0;
}

static void mst_audio_shutdown(snd_pcm_substream_t *substream, void *priv)
{
	if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
		MST_MSCWR2 |= MST_MSCWR2_AC97_SPKROFF;
}

static long mst_audio_suspend_mask;

static void mst_audio_suspend(void *priv)
{
	mst_audio_suspend_mask = MST_MSCWR2;
	MST_MSCWR2 |= MST_MSCWR2_AC97_SPKROFF;
}

static void mst_audio_resume(void *priv)
{
	MST_MSCWR2 &= mst_audio_suspend_mask | ~MST_MSCWR2_AC97_SPKROFF;
}

static pxa2xx_audio_ops_t mst_audio_ops = {
	.startup	= mst_audio_startup,
	.shutdown	= mst_audio_shutdown,
	.suspend	= mst_audio_suspend,
	.resume		= mst_audio_resume,
};

static struct platform_device mst_audio_device = {
	.name		= "pxa2xx-ac97",
	.id		= -1,
	.dev		= { .platform_data = &mst_audio_ops },
};

static void mainstone_backlight_power(int on)
{
	if (on) {
		pxa_gpio_mode(GPIO16_PWM0_MD);
		pxa_set_cken(CKEN0_PWM0, 1);
		PWM_CTRL0 = 0;
		PWM_PWDUTY0 = 0x3ff;
		PWM_PERVAL0 = 0x3ff;
	} else {
		PWM_CTRL0 = 0;
		PWM_PWDUTY0 = 0x0;
		PWM_PERVAL0 = 0x3FF;
		pxa_set_cken(CKEN0_PWM0, 0);
	}
}

static struct pxafb_mach_info toshiba_ltm04c380k __initdata = {
	.pixclock		= 50000,
	.xres			= 640,
	.yres			= 480,
	.bpp			= 16,
	.hsync_len		= 1,
	.left_margin		= 0x9f,
	.right_margin		= 1,
	.vsync_len		= 44,
	.upper_margin		= 0,
	.lower_margin		= 0,
	.sync			= FB_SYNC_HOR_HIGH_ACT|FB_SYNC_VERT_HIGH_ACT,
	.lccr0			= LCCR0_Act,
	.lccr3			= LCCR3_PCP,
	.pxafb_backlight_power	= mainstone_backlight_power,
};

static struct pxafb_mach_info toshiba_ltm035a776c __initdata = {
	.pixclock		= 110000,
	.xres			= 240,
	.yres			= 320,
	.bpp			= 16,
	.hsync_len		= 4,
	.left_margin		= 8,
	.right_margin		= 20,
	.vsync_len		= 3,
	.upper_margin		= 1,
	.lower_margin		= 10,
	.sync			= FB_SYNC_HOR_HIGH_ACT|FB_SYNC_VERT_HIGH_ACT,
	.lccr0			= LCCR0_Act,
	.lccr3			= LCCR3_PCP,
	.pxafb_backlight_power	= mainstone_backlight_power,
};

static int mainstone_mci_init(struct device *dev, irqreturn_t (*mstone_detect_int)(int, void *, struct pt_regs *), void *data)
{
	int err;

	/*
	 * setup GPIO for PXA27x MMC controller
	 */
	pxa_gpio_mode(GPIO32_MMCCLK_MD);
	pxa_gpio_mode(GPIO112_MMCCMD_MD);
	pxa_gpio_mode(GPIO92_MMCDAT0_MD);
	pxa_gpio_mode(GPIO109_MMCDAT1_MD);
	pxa_gpio_mode(GPIO110_MMCDAT2_MD);
	pxa_gpio_mode(GPIO111_MMCDAT3_MD);

	/* make sure SD/Memory Stick multiplexer's signals
	 * are routed to MMC controller
	 */
	MST_MSCWR1 &= ~MST_MSCWR1_MS_SEL;

	err = request_irq(MAINSTONE_MMC_IRQ, mstone_detect_int, SA_INTERRUPT,
			     "MMC card detect", data);
	if (err) {
		printk(KERN_ERR "mainstone_mci_init: MMC/SD: can't request MMC card detect IRQ\n");
		return -1;
	}

	return 0;
}

static void mainstone_mci_setpower(struct device *dev, unsigned int vdd)
{
	struct pxamci_platform_data* p_d = dev->platform_data;

	if (( 1 << vdd) & p_d->ocr_mask) {
		printk(KERN_DEBUG "%s: on\n", __FUNCTION__);
		MST_MSCWR1 |= MST_MSCWR1_MMC_ON;
		MST_MSCWR1 &= ~MST_MSCWR1_MS_SEL;
	} else {
		printk(KERN_DEBUG "%s: off\n", __FUNCTION__);
		MST_MSCWR1 &= ~MST_MSCWR1_MMC_ON;
	}
}

static void mainstone_mci_exit(struct device *dev, void *data)
{
	free_irq(MAINSTONE_MMC_IRQ, data);
}

static struct pxamci_platform_data mainstone_mci_platform_data = {
	.ocr_mask	= MMC_VDD_32_33|MMC_VDD_33_34,
	.init 		= mainstone_mci_init,
	.setpower 	= mainstone_mci_setpower,
	.exit		= mainstone_mci_exit,
};

static void __init mainstone_init(void)
{
	/*
	 * On Mainstone, we route AC97_SYSCLK via GPIO45 to
	 * the audio daughter card
	 */
	pxa_gpio_mode(GPIO45_SYSCLK_AC97_MD);

	platform_device_register(&smc91x_device);
	platform_device_register(&mst_audio_device);

	/* reading Mainstone's "Virtual Configuration Register"
	   might be handy to select LCD type here */
	if (0)
		set_pxa_fb_info(&toshiba_ltm04c380k);
	else
		set_pxa_fb_info(&toshiba_ltm035a776c);

	pxa_set_mci_info(&mainstone_mci_platform_data);
}


static struct map_desc mainstone_io_desc[] __initdata = {
  { MST_FPGA_VIRT, MST_FPGA_PHYS, 0x00100000, MT_DEVICE }, /* CPLD */
};

static void __init mainstone_map_io(void)
{
	pxa_map_io();
	iotable_init(mainstone_io_desc, ARRAY_SIZE(mainstone_io_desc));

	/* initialize sleep mode regs (wake-up sources, etc) */
	PGSR0 = 0x00008800;
	PGSR1 = 0x00000002;
	PGSR2 = 0x0001FC00;
	PGSR3 = 0x00001F81;
	PWER  = 0xC0000002;
	PRER  = 0x00000002;
	PFER  = 0x00000002;
 	/*	for use I SRAM as framebuffer.	*/
 	PSLR |= 0xF04;
 	PCFR = 0x66;
 	/*	For Keypad wakeup.	*/
 	KPC &=~KPC_ASACT;
 	KPC |=KPC_AS;
 	PKWR  = 0x000FD000;
 	/*	Need read PKWR back after set it.	*/
 	PKWR;
}

MACHINE_START(MAINSTONE, "Intel HCDDBBVA0 Development Platform (aka Mainstone)")
	/* Maintainer: MontaVista Software Inc. */
	.phys_ram	= 0xa0000000,
	.phys_io	= 0x40000000,
	.io_pg_offst	= ((io_p2v(0x40000000) >> 18) & 0xfffc,)
	.map_io		= mainstone_map_io,
	.init_irq	= mainstone_init_irq,
	.timer		= &pxa_timer,
	.init_machine	= mainstone_init,
MACHINE_END