summaryrefslogtreecommitdiffstats
path: root/arch/arm/mach-sa1100/simpad.c
blob: 7d4feb8a49ac5abb21dd727e4be140d6320b94a5 (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
// SPDX-License-Identifier: GPL-2.0
/*
 * linux/arch/arm/mach-sa1100/simpad.c
 */

#include <linux/module.h>
#include <linux/init.h>
#include <linux/kernel.h>
#include <linux/tty.h>
#include <linux/proc_fs.h>
#include <linux/string.h>
#include <linux/pm.h>
#include <linux/platform_data/sa11x0-serial.h>
#include <linux/platform_device.h>
#include <linux/mfd/ucb1x00.h>
#include <linux/mtd/mtd.h>
#include <linux/mtd/partitions.h>
#include <linux/io.h>
#include <linux/gpio/driver.h>
#include <linux/gpio/machine.h>

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

#include <asm/mach-types.h>
#include <asm/mach/arch.h>
#include <asm/mach/flash.h>
#include <asm/mach/map.h>
#include <linux/platform_data/mfd-mcp-sa11x0.h>
#include <mach/simpad.h>
#include <mach/irqs.h>

#include <linux/serial_core.h>
#include <linux/ioport.h>
#include <linux/input.h>
#include <linux/gpio_keys.h>
#include <linux/leds.h>
#include <linux/i2c-gpio.h>

#include "generic.h"

/*
 * CS3 support
 */

static long cs3_shadow;
static spinlock_t cs3_lock;
static struct gpio_chip cs3_gpio;

long simpad_get_cs3_ro(void)
{
	return readl(CS3_BASE);
}
EXPORT_SYMBOL(simpad_get_cs3_ro);

long simpad_get_cs3_shadow(void)
{
	return cs3_shadow;
}
EXPORT_SYMBOL(simpad_get_cs3_shadow);

static void __simpad_write_cs3(void)
{
	writel(cs3_shadow, CS3_BASE);
}

void simpad_set_cs3_bit(int value)
{
	unsigned long flags;

	spin_lock_irqsave(&cs3_lock, flags);
	cs3_shadow |= value;
	__simpad_write_cs3();
	spin_unlock_irqrestore(&cs3_lock, flags);
}
EXPORT_SYMBOL(simpad_set_cs3_bit);

void simpad_clear_cs3_bit(int value)
{
	unsigned long flags;

	spin_lock_irqsave(&cs3_lock, flags);
	cs3_shadow &= ~value;
	__simpad_write_cs3();
	spin_unlock_irqrestore(&cs3_lock, flags);
}
EXPORT_SYMBOL(simpad_clear_cs3_bit);

static void cs3_gpio_set(struct gpio_chip *chip, unsigned offset, int value)
{
	if (offset > 15)
		return;
	if (value)
		simpad_set_cs3_bit(1 << offset);
	else
		simpad_clear_cs3_bit(1 << offset);
};

static int cs3_gpio_get(struct gpio_chip *chip, unsigned offset)
{
	if (offset > 15)
		return !!(simpad_get_cs3_ro() & (1 << (offset - 16)));
	return !!(simpad_get_cs3_shadow() & (1 << offset));
};

static int cs3_gpio_direction_input(struct gpio_chip *chip, unsigned offset)
{
	if (offset > 15)
		return 0;
	return -EINVAL;
};

static int cs3_gpio_direction_output(struct gpio_chip *chip, unsigned offset,
	int value)
{
	if (offset > 15)
		return -EINVAL;
	cs3_gpio_set(chip, offset, value);
	return 0;
};

static struct map_desc simpad_io_desc[] __initdata = {
	{	/* MQ200 */
		.virtual	=  0xf2800000,
		.pfn		= __phys_to_pfn(0x4b800000),
		.length		= 0x00800000,
		.type		= MT_DEVICE
	}, {	/* Simpad CS3 */
		.virtual	= (unsigned long)CS3_BASE,
		.pfn		= __phys_to_pfn(SA1100_CS3_PHYS),
		.length		= 0x00100000,
		.type		= MT_DEVICE
	},
};


static void simpad_uart_pm(struct uart_port *port, u_int state, u_int oldstate)
{
	if (port->mapbase == (u_int)&Ser1UTCR0) {
		if (state)
		{
			simpad_clear_cs3_bit(RS232_ON);
			simpad_clear_cs3_bit(DECT_POWER_ON);
		}else
		{
			simpad_set_cs3_bit(RS232_ON);
			simpad_set_cs3_bit(DECT_POWER_ON);
		}
	}
}

static struct sa1100_port_fns simpad_port_fns __initdata = {
	.pm	   = simpad_uart_pm,
};


static struct mtd_partition simpad_partitions[] = {
	{
		.name       = "SIMpad boot firmware",
		.size       = 0x00080000,
		.offset     = 0,
		.mask_flags = MTD_WRITEABLE,
	}, {
		.name       = "SIMpad kernel",
		.size       = 0x0010000,
		.offset     = MTDPART_OFS_APPEND,
	}, {
		.name       = "SIMpad root jffs2",
		.size       = MTDPART_SIZ_FULL,
		.offset     = MTDPART_OFS_APPEND,
	}
};

static struct flash_platform_data simpad_flash_data = {
	.map_name    = "cfi_probe",
	.parts       = simpad_partitions,
	.nr_parts    = ARRAY_SIZE(simpad_partitions),
};


static struct resource simpad_flash_resources [] = {
	DEFINE_RES_MEM(SA1100_CS0_PHYS, SZ_16M),
	DEFINE_RES_MEM(SA1100_CS1_PHYS, SZ_16M),
};

static struct ucb1x00_plat_data simpad_ucb1x00_data = {
	.gpio_base	= SIMPAD_UCB1X00_GPIO_BASE,
};

static struct mcp_plat_data simpad_mcp_data = {
	.mccr0		= MCCR0_ADM,
	.sclk_rate	= 11981000,
	.codec_pdata	= &simpad_ucb1x00_data,
};



static void __init simpad_map_io(void)
{
	sa1100_map_io();

	iotable_init(simpad_io_desc, ARRAY_SIZE(simpad_io_desc));

	/* Initialize CS3 */
	cs3_shadow = (EN1 | EN0 | LED2_ON | DISPLAY_ON |
		RS232_ON | ENABLE_5V | RESET_SIMCARD | DECT_POWER_ON);
	__simpad_write_cs3(); /* Spinlocks not yet initialized */

        sa1100_register_uart_fns(&simpad_port_fns);
	sa1100_register_uart(0, 3);  /* serial interface */
	sa1100_register_uart(1, 1);  /* DECT             */

	// Reassign UART 1 pins
	GAFR |= GPIO_UART_TXD | GPIO_UART_RXD;
	GPDR |= GPIO_UART_TXD | GPIO_LDD13 | GPIO_LDD15;
	GPDR &= ~GPIO_UART_RXD;
	PPAR |= PPAR_UPR;

	/*
	 * Set up registers for sleep mode.
	 */


	PWER = PWER_GPIO0| PWER_RTC;
	PGSR = 0x818;
	PCFR = 0;
	PSDR = 0;

}

static void simpad_power_off(void)
{
	local_irq_disable();
	cs3_shadow = SD_MEDIAQ;
	__simpad_write_cs3(); /* Bypass spinlock here */

	/* disable internal oscillator, float CS lines */
	PCFR = (PCFR_OPDE | PCFR_FP | PCFR_FS);
	/* enable wake-up on GPIO0 */
	PWER = GFER = GRER = PWER_GPIO0;
	/*
	 * set scratchpad to zero, just in case it is used as a
	 * restart address by the bootloader.
	 */
	PSPR = 0;
	PGSR = 0;
	/* enter sleep mode */
	PMCR = PMCR_SF;
	while(1);

	local_irq_enable(); /* we won't ever call it */


}

/*
 * gpio_keys
*/

static struct gpio_keys_button simpad_button_table[] = {
	{ KEY_POWER, IRQ_GPIO_POWER_BUTTON, 1, "power button" },
};

static struct gpio_keys_platform_data simpad_keys_data = {
	.buttons = simpad_button_table,
	.nbuttons = ARRAY_SIZE(simpad_button_table),
};

static struct platform_device simpad_keys = {
	.name = "gpio-keys",
	.dev = {
		.platform_data = &simpad_keys_data,
	},
};

static struct gpio_keys_button simpad_polled_button_table[] = {
	{ KEY_PROG1, SIMPAD_UCB1X00_GPIO_PROG1, 1, "prog1 button" },
	{ KEY_PROG2, SIMPAD_UCB1X00_GPIO_PROG2, 1, "prog2 button" },
	{ KEY_UP,    SIMPAD_UCB1X00_GPIO_UP,    1, "up button" },
	{ KEY_DOWN,  SIMPAD_UCB1X00_GPIO_DOWN,  1, "down button" },
	{ KEY_LEFT,  SIMPAD_UCB1X00_GPIO_LEFT,  1, "left button" },
	{ KEY_RIGHT, SIMPAD_UCB1X00_GPIO_RIGHT, 1, "right button" },
};

static struct gpio_keys_platform_data simpad_polled_keys_data = {
	.buttons = simpad_polled_button_table,
	.nbuttons = ARRAY_SIZE(simpad_polled_button_table),
	.poll_interval = 50,
};

static struct platform_device simpad_polled_keys = {
	.name = "gpio-keys-polled",
	.dev = {
		.platform_data = &simpad_polled_keys_data,
	},
};

/*
 * GPIO LEDs
 */

static struct gpio_led simpad_leds[] = {
	{
		.name = "simpad:power",
		.gpio = SIMPAD_CS3_LED2_ON,
		.active_low = 0,
		.default_trigger = "default-on",
	},
};

static struct gpio_led_platform_data simpad_led_data = {
	.num_leds = ARRAY_SIZE(simpad_leds),
	.leds = simpad_leds,
};

static struct platform_device simpad_gpio_leds = {
	.name = "leds-gpio",
	.id = 0,
	.dev = {
		.platform_data = &simpad_led_data,
	},
};

/*
 * i2c
 */
static struct gpiod_lookup_table simpad_i2c_gpiod_table = {
	.dev_id = "i2c-gpio",
	.table = {
		GPIO_LOOKUP_IDX("gpio", 21, NULL, 0,
				GPIO_ACTIVE_HIGH | GPIO_OPEN_DRAIN),
		GPIO_LOOKUP_IDX("gpio", 25, NULL, 1,
				GPIO_ACTIVE_HIGH | GPIO_OPEN_DRAIN),
	},
};

static struct i2c_gpio_platform_data simpad_i2c_data = {
	.udelay = 10,
	.timeout = HZ,
};

static struct platform_device simpad_i2c = {
	.name = "i2c-gpio",
	.id = 0,
	.dev = {
		.platform_data = &simpad_i2c_data,
	},
};

/*
 * MediaQ Video Device
 */
static struct platform_device simpad_mq200fb = {
	.name = "simpad-mq200",
	.id   = 0,
};

static struct platform_device *devices[] __initdata = {
	&simpad_keys,
	&simpad_polled_keys,
	&simpad_mq200fb,
	&simpad_gpio_leds,
	&simpad_i2c,
};



static int __init simpad_init(void)
{
	int ret;

	spin_lock_init(&cs3_lock);

	cs3_gpio.label = "simpad_cs3";
	cs3_gpio.base = SIMPAD_CS3_GPIO_BASE;
	cs3_gpio.ngpio = 24;
	cs3_gpio.set = cs3_gpio_set;
	cs3_gpio.get = cs3_gpio_get;
	cs3_gpio.direction_input = cs3_gpio_direction_input;
	cs3_gpio.direction_output = cs3_gpio_direction_output;
	ret = gpiochip_add_data(&cs3_gpio, NULL);
	if (ret)
		printk(KERN_WARNING "simpad: Unable to register cs3 GPIO device");

	pm_power_off = simpad_power_off;

	sa11x0_ppc_configure_mcp();
	sa11x0_register_mtd(&simpad_flash_data, simpad_flash_resources,
			      ARRAY_SIZE(simpad_flash_resources));
	sa11x0_register_mcp(&simpad_mcp_data);

	gpiod_add_lookup_table(&simpad_i2c_gpiod_table);
	ret = platform_add_devices(devices, ARRAY_SIZE(devices));
	if(ret)
		printk(KERN_WARNING "simpad: Unable to register mq200 framebuffer device");

	return 0;
}

arch_initcall(simpad_init);


MACHINE_START(SIMPAD, "Simpad")
	/* Maintainer: Holger Freyther */
	.atag_offset	= 0x100,
	.map_io		= simpad_map_io,
	.nr_irqs	= SA1100_NR_IRQS,
	.init_irq	= sa1100_init_irq,
	.init_late	= sa11x0_init_late,
	.init_time	= sa1100_timer_init,
	.restart	= sa11x0_restart,
MACHINE_END