summaryrefslogtreecommitdiffstats
path: root/arch/arm/mach-pxa/corgi.c
blob: 29185acdd9e1ea7e6eb7a8f9182e18bac37f35b1 (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
/*
 * Support for Sharp SL-C7xx PDAs
 * Models: SL-C700 (Corgi), SL-C750 (Shepherd), SL-C760 (Husky)
 *
 * Copyright (c) 2004-2005 Richard Purdie
 *
 * Based on Sharp's 2.4 kernel patches/lubbock.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/device.h>
#include <linux/major.h>
#include <linux/fs.h>
#include <linux/interrupt.h>
#include <linux/mmc/host.h>

#include <asm/setup.h>
#include <asm/memory.h>
#include <asm/mach-types.h>
#include <asm/hardware.h>
#include <asm/irq.h>
#include <asm/io.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/irq.h>
#include <asm/arch/mmc.h>
#include <asm/arch/udc.h>
#include <asm/arch/corgi.h>

#include <asm/mach/sharpsl_param.h>
#include <asm/hardware/scoop.h>

#include "generic.h"


/*
 * Corgi SCOOP Device
 */
static struct resource corgi_scoop_resources[] = {
	[0] = {
		.start		= 0x10800000,
		.end		= 0x10800fff,
		.flags		= IORESOURCE_MEM,
	},
};

static struct scoop_config corgi_scoop_setup = {
	.io_dir 	= CORGI_SCOOP_IO_DIR,
	.io_out		= CORGI_SCOOP_IO_OUT,
};

static struct scoop_pcmcia_dev corgi_pcmcia_scoop[] = {
{
	.dev        = &corgiscoop_device.dev,
	.irq        = CORGI_IRQ_GPIO_CF_IRQ,
	.cd_irq     = CORGI_IRQ_GPIO_CF_CD,
	.cd_irq_str = "PCMCIA0 CD",
},
};

struct platform_device corgiscoop_device = {
	.name		= "sharp-scoop",
	.id		= -1,
	.dev		= {
 		.platform_data	= &corgi_scoop_setup,
	},
	.num_resources	= ARRAY_SIZE(corgi_scoop_resources),
	.resource	= corgi_scoop_resources,
};


/*
 * Corgi SSP Device
 *
 * Set the parent as the scoop device because a lot of SSP devices
 * also use scoop functions and this makes the power up/down order
 * work correctly.
 */
struct platform_device corgissp_device = {
	.name		= "corgi-ssp",
	.dev		= {
 		.parent = &corgiscoop_device.dev,
	},
	.id		= -1,
};


/*
 * Corgi Backlight Device
 */
static struct platform_device corgibl_device = {
	.name		= "corgi-bl",
	.dev		= {
 		.parent = &corgifb_device.dev,
	},
	.id		= -1,
};


/*
 * Corgi Keyboard Device
 */
static struct platform_device corgikbd_device = {
	.name		= "corgi-keyboard",
	.id		= -1,
};


/*
 * Corgi Touch Screen Device
 */
static struct platform_device corgits_device = {
	.name		= "corgi-ts",
	.dev		= {
 		.parent = &corgissp_device.dev,
	},
	.id		= -1,
};


/*
 * MMC/SD Device
 *
 * The card detect interrupt isn't debounced so we delay it by HZ/4
 * to give the card a chance to fully insert/eject.
 */
static struct mmc_detect {
	struct timer_list detect_timer;
	void *devid;
} mmc_detect;

static void mmc_detect_callback(unsigned long data)
{
	mmc_detect_change(mmc_detect.devid);
}

static irqreturn_t corgi_mmc_detect_int(int irq, void *devid, struct pt_regs *regs)
{
	mmc_detect.devid=devid;
	mod_timer(&mmc_detect.detect_timer, jiffies + HZ/4);
	return IRQ_HANDLED;
}

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

	/* setup GPIO for PXA25x MMC controller	*/
	pxa_gpio_mode(GPIO6_MMCCLK_MD);
	pxa_gpio_mode(GPIO8_MMCCS0_MD);
	pxa_gpio_mode(CORGI_GPIO_nSD_DETECT | GPIO_IN);
	pxa_gpio_mode(CORGI_GPIO_SD_PWR | GPIO_OUT);

	init_timer(&mmc_detect.detect_timer);
	mmc_detect.detect_timer.function = mmc_detect_callback;
	mmc_detect.detect_timer.data = (unsigned long) &mmc_detect;

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

	set_irq_type(CORGI_IRQ_GPIO_nSD_DETECT, IRQT_BOTHEDGE);

	return 0;
}

static void corgi_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__);
		GPSR1 = GPIO_bit(CORGI_GPIO_SD_PWR);
	} else {
		printk(KERN_DEBUG "%s: off\n", __FUNCTION__);
		GPCR1 = GPIO_bit(CORGI_GPIO_SD_PWR);
	}
}

static int corgi_mci_get_ro(struct device *dev)
{
	return GPLR(CORGI_GPIO_nSD_WP) & GPIO_bit(CORGI_GPIO_nSD_WP);
}

static void corgi_mci_exit(struct device *dev, void *data)
{
	free_irq(CORGI_IRQ_GPIO_nSD_DETECT, data);
	del_timer(&mmc_detect.detect_timer);
}

static struct pxamci_platform_data corgi_mci_platform_data = {
	.ocr_mask	= MMC_VDD_32_33|MMC_VDD_33_34,
	.init 		= corgi_mci_init,
	.get_ro		= corgi_mci_get_ro,
	.setpower 	= corgi_mci_setpower,
	.exit		= corgi_mci_exit,
};



/*
 * USB Device Controller
 */
static void corgi_udc_command(int cmd)
{
	switch(cmd)	{
	case PXA2XX_UDC_CMD_CONNECT:
		GPSR(CORGI_GPIO_USB_PULLUP) = GPIO_bit(CORGI_GPIO_USB_PULLUP);
		break;
	case PXA2XX_UDC_CMD_DISCONNECT:
		GPCR(CORGI_GPIO_USB_PULLUP) = GPIO_bit(CORGI_GPIO_USB_PULLUP);
		break;
	}
}

static struct pxa2xx_udc_mach_info udc_info __initdata = {
	/* no connect GPIO; corgi can't tell connection status */
	.udc_command		= corgi_udc_command,
};


static struct platform_device *devices[] __initdata = {
	&corgiscoop_device,
	&corgissp_device,
	&corgifb_device,
	&corgikbd_device,
	&corgibl_device,
	&corgits_device,
};

static void __init corgi_init(void)
{
	pxa_gpio_mode(CORGI_GPIO_USB_PULLUP | GPIO_OUT);
 	pxa_set_udc_info(&udc_info);
	pxa_set_mci_info(&corgi_mci_platform_data);

	scoop_num = 1;
	scoop_devs = &corgi_pcmcia_scoop[0];

	platform_add_devices(devices, ARRAY_SIZE(devices));
}

static void __init fixup_corgi(struct machine_desc *desc,
		struct tag *tags, char **cmdline, struct meminfo *mi)
{
	sharpsl_save_param();
	mi->nr_banks=1;
	mi->bank[0].start = 0xa0000000;
	mi->bank[0].node = 0;
	if (machine_is_corgi())
		mi->bank[0].size = (32*1024*1024);
	else
		mi->bank[0].size = (64*1024*1024);
}

static void __init corgi_init_irq(void)
{
	pxa_init_irq();
}

static struct map_desc corgi_io_desc[] __initdata = {
/*    virtual     physical    length      */
/*	{ 0xf1000000, 0x08000000, 0x01000000, MT_DEVICE },*/ /* LCDC (readable for Qt driver) */
/*	{ 0xef700000, 0x10800000, 0x00001000, MT_DEVICE },*/  /* SCOOP */
	{ 0xef800000, 0x00000000, 0x00800000, MT_DEVICE }, /* Boot Flash */
};

static void __init corgi_map_io(void)
{
	pxa_map_io();
	iotable_init(corgi_io_desc,ARRAY_SIZE(corgi_io_desc));

	/* setup sleep mode values */
	PWER  = 0x00000002;
	PFER  = 0x00000000;
	PRER  = 0x00000002;
	PGSR0 = 0x0158C000;
	PGSR1 = 0x00FF0080;
	PGSR2 = 0x0001C004;
	/* Stop 3.6MHz and drive HIGH to PCMCIA and CS */
	PCFR |= PCFR_OPDE;
}

#ifdef CONFIG_MACH_CORGI
MACHINE_START(CORGI, "SHARP Corgi")
	.phys_ram	= 0xa0000000,
	.phys_io	= 0x40000000,
	.io_pg_offst	= (io_p2v(0x40000000) >> 18) & 0xfffc,
	.fixup		= fixup_corgi,
	.map_io		= corgi_map_io,
	.init_irq	= corgi_init_irq,
	.init_machine	= corgi_init,
	.timer		= &pxa_timer,
MACHINE_END
#endif

#ifdef CONFIG_MACH_SHEPHERD
MACHINE_START(SHEPHERD, "SHARP Shepherd")
	.phys_ram	= 0xa0000000,
	.phys_io	= 0x40000000,
	.io_pg_offst	= (io_p2v(0x40000000) >> 18) & 0xfffc,
	.fixup		= fixup_corgi,
	.map_io		= corgi_map_io,
	.init_irq	= corgi_init_irq,
	.init_machine	= corgi_init,
	.timer		= &pxa_timer,
MACHINE_END
#endif

#ifdef CONFIG_MACH_HUSKY
MACHINE_START(HUSKY, "SHARP Husky")
	.phys_ram	= 0xa0000000,
	.phys_io	= 0x40000000,
	.io_pg_offst	= (io_p2v(0x40000000) >> 18) & 0xfffc,
	.fixup		= fixup_corgi,
	.map_io		= corgi_map_io,
	.init_irq	= corgi_init_irq,
	.init_machine	= corgi_init,
	.timer		= &pxa_timer,
MACHINE_END
#endif

OpenPOWER on IntegriCloud