aboutsummaryrefslogtreecommitdiffstats
path: root/arch/arm/mach-pxa/balloon3.c
blob: f23138b8fca318f72c04a55cd7aaada478623544 (plain) (blame)
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
/*
 *  linux/arch/arm/mach-pxa/balloon3.c
 *
 *  Support for Balloonboard.org Balloon3 board.
 *
 *  Author:	Nick Bane, Wookey, Jonathan McDowell
 *  Created:	June, 2006
 *  Copyright:	Toby Churchill Ltd
 *  Derived from mainstone.c, by Nico Pitre
 *
 *  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/platform_device.h>
#include <linux/sysdev.h>
#include <linux/interrupt.h>
#include <linux/sched.h>
#include <linux/bitops.h>
#include <linux/fb.h>
#include <linux/gpio.h>
#include <linux/ioport.h>
#include <linux/mtd/mtd.h>
#include <linux/mtd/partitions.h>
#include <linux/types.h>

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

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

#include <mach/pxa27x.h>
#include <mach/balloon3.h>
#include <mach/audio.h>
#include <mach/pxafb.h>
#include <mach/mmc.h>
#include <mach/udc.h>
#include <mach/pxa27x-udc.h>
#include <mach/irda.h>
#include <mach/ohci.h>

#include <plat/i2c.h>

#include "generic.h"
#include "devices.h"

static unsigned long balloon3_irq_enabled;

static unsigned long balloon3_features_present =
		(1 << BALLOON3_FEATURE_OHCI) | (1 << BALLOON3_FEATURE_CF) |
		(1 << BALLOON3_FEATURE_AUDIO) |
		(1 << BALLOON3_FEATURE_TOPPOLY);

int balloon3_has(enum balloon3_features feature)
{
	return (balloon3_features_present & (1 << feature)) ? 1 : 0;
}
EXPORT_SYMBOL_GPL(balloon3_has);

int __init parse_balloon3_features(char *arg)
{
	if (!arg)
		return 0;

	return strict_strtoul(arg, 0, &balloon3_features_present);
}
early_param("balloon3_features", parse_balloon3_features);

static void balloon3_mask_irq(unsigned int irq)
{
	int balloon3_irq = (irq - BALLOON3_IRQ(0));
	balloon3_irq_enabled &= ~(1 << balloon3_irq);
	__raw_writel(~balloon3_irq_enabled, BALLOON3_INT_CONTROL_REG);
}

static void balloon3_unmask_irq(unsigned int irq)
{
	int balloon3_irq = (irq - BALLOON3_IRQ(0));
	balloon3_irq_enabled |= (1 << balloon3_irq);
	__raw_writel(~balloon3_irq_enabled, BALLOON3_INT_CONTROL_REG);
}

static struct irq_chip balloon3_irq_chip = {
	.name		= "FPGA",
	.ack		= balloon3_mask_irq,
	.mask		= balloon3_mask_irq,
	.unmask		= balloon3_unmask_irq,
};

static void balloon3_irq_handler(unsigned int irq, struct irq_desc *desc)
{
	unsigned long pending = __raw_readl(BALLOON3_INT_CONTROL_REG) &
					balloon3_irq_enabled;

	do {
		/* clear useless edge notification */
		if (desc->chip->ack)
			desc->chip->ack(BALLOON3_AUX_NIRQ);
		while (pending) {
			irq = BALLOON3_IRQ(0) + __ffs(pending);
			generic_handle_irq(irq);
			pending &= pending - 1;
		}
		pending = __raw_readl(BALLOON3_INT_CONTROL_REG) &
				balloon3_irq_enabled;
	} while (pending);
}

static void __init balloon3_init_irq(void)
{
	int irq;

	pxa27x_init_irq();
	/* setup extra Balloon3 irqs */
	for (irq = BALLOON3_IRQ(0); irq <= BALLOON3_IRQ(7); irq++) {
		set_irq_chip(irq, &balloon3_irq_chip);
		set_irq_handler(irq, handle_level_irq);
		set_irq_flags(irq, IRQF_VALID | IRQF_PROBE);
	}

	set_irq_chained_handler(BALLOON3_AUX_NIRQ, balloon3_irq_handler);
	set_irq_type(BALLOON3_AUX_NIRQ, IRQ_TYPE_EDGE_FALLING);

	pr_debug("%s: chained handler installed - irq %d automatically "
		"enabled\n", __func__, BALLOON3_AUX_NIRQ);
}

static void balloon3_backlight_power(int on)
{
	pr_debug("%s: power is %s\n", __func__, on ? "on" : "off");
	gpio_set_value(BALLOON3_GPIO_RUN_BACKLIGHT, on);
}

static unsigned long balloon3_lcd_pin_config[] = {
	/* LCD - 16bpp Active TFT */
	GPIO58_LCD_LDD_0,
	GPIO59_LCD_LDD_1,
	GPIO60_LCD_LDD_2,
	GPIO61_LCD_LDD_3,
	GPIO62_LCD_LDD_4,
	GPIO63_LCD_LDD_5,
	GPIO64_LCD_LDD_6,
	GPIO65_LCD_LDD_7,
	GPIO66_LCD_LDD_8,
	GPIO67_LCD_LDD_9,
	GPIO68_LCD_LDD_10,
	GPIO69_LCD_LDD_11,
	GPIO70_LCD_LDD_12,
	GPIO71_LCD_LDD_13,
	GPIO72_LCD_LDD_14,
	GPIO73_LCD_LDD_15,
	GPIO74_LCD_FCLK,
	GPIO75_LCD_LCLK,
	GPIO76_LCD_PCLK,
	GPIO77_LCD_BIAS,

	GPIO99_GPIO,		/* Backlight */
};

static struct pxafb_mode_info balloon3_lcd_modes[] = {
	{
		.pixclock		= 38000,
		.xres			= 480,
		.yres			= 640,
		.bpp			= 16,
		.hsync_len		= 8,
		.left_margin		= 8,
		.right_margin		= 8,
		.vsync_len		= 2,
		.upper_margin		= 4,
		.lower_margin		= 5,
		.sync			= 0,
	},
};

static struct pxafb_mach_info balloon3_pxafb_info = {
	.modes			= balloon3_lcd_modes,
	.num_modes		= ARRAY_SIZE(balloon3_lcd_modes),
	.lcd_conn		= LCD_COLOR_TFT_16BPP | LCD_PCLK_EDGE_FALL,
	.pxafb_backlight_power	= balloon3_backlight_power,
};

static unsigned long balloon3_mmc_pin_config[] = {
	GPIO32_MMC_CLK,
	GPIO92_MMC_DAT_0,
	GPIO109_MMC_DAT_1,
	GPIO110_MMC_DAT_2,
	GPIO111_MMC_DAT_3,
	GPIO112_MMC_CMD,
};

static void balloon3_mci_setpower(struct device *dev, unsigned int vdd)
{
	struct pxamci_platform_data *p_d = dev->platform_data;

	if ((1 << vdd) & p_d->ocr_mask) {
		pr_debug("%s: on\n", __func__);
		/* FIXME something to prod here? */
	} else {
		pr_debug("%s: off\n", __func__);
		/* FIXME something to prod here? */
	}
}

static struct pxamci_platform_data balloon3_mci_platform_data = {
	.ocr_mask	= MMC_VDD_32_33|MMC_VDD_33_34,
	.setpower 	= balloon3_mci_setpower,
};

static int balloon3_udc_is_connected(void)
{
	pr_debug("%s: udc connected\n", __func__);
	return 1;
}

static void balloon3_udc_command(int cmd)
{
	switch (cmd) {
	case PXA2XX_UDC_CMD_CONNECT:
		UP2OCR |= (UP2OCR_DPPUE + UP2OCR_DPPUBE);
		pr_debug("%s: connect\n", __func__);
		break;
	case PXA2XX_UDC_CMD_DISCONNECT:
		UP2OCR &= ~UP2OCR_DPPUE;
		pr_debug("%s: disconnect\n", __func__);
		break;
	}
}

static struct pxa2xx_udc_mach_info balloon3_udc_info = {
	.udc_is_connected = balloon3_udc_is_connected,
	.udc_command      = balloon3_udc_command,
};

static struct pxaficp_platform_data balloon3_ficp_platform_data = {
	.transceiver_cap  = IR_SIRMODE | IR_FIRMODE | IR_OFF,
};

static unsigned long balloon3_ohci_pin_config[] = {
	GPIO88_USBH1_PWR,
	GPIO89_USBH1_PEN,
};

static struct pxaohci_platform_data balloon3_ohci_platform_data = {
	.port_mode	= PMM_PERPORT_MODE,
	.flags		= ENABLE_PORT_ALL | POWER_CONTROL_LOW | POWER_SENSE_LOW,
};

static unsigned long balloon3_pin_config[] __initdata = {
	/* Select BTUART 'COM1/ttyS0' as IO option for pins 42/43/44/45 */
	GPIO42_BTUART_RXD,
	GPIO43_BTUART_TXD,
	GPIO44_BTUART_CTS,
	GPIO45_BTUART_RTS,

	/* Wakeup GPIO */
	GPIO1_GPIO | WAKEUP_ON_EDGE_BOTH,

	/* NAND & IDLE LED GPIOs */
	GPIO9_GPIO,
	GPIO10_GPIO,
};

static struct gpio_led balloon3_gpio_leds[] = {
	{
		.name			= "balloon3:green:idle",
		.default_trigger	= "heartbeat",
		.gpio			= BALLOON3_GPIO_LED_IDLE,
		.active_low		= 1,
	},
	{
		.name			= "balloon3:green:nand",
		.default_trigger	= "nand-disk",
		.gpio			= BALLOON3_GPIO_LED_NAND,
		.active_low		= 1,
	},
};

static struct gpio_led_platform_data balloon3_gpio_leds_platform_data = {
	.leds		= balloon3_gpio_leds,
	.num_leds	= ARRAY_SIZE(balloon3_gpio_leds),
};

static struct platform_device balloon3led_device = {
	.name	= "leds-gpio",
	.id	= -1,
	.dev	= {
		.platform_data	= &balloon3_gpio_leds_platform_data,
	},
};

static void __init balloon3_init(void)
{
	pr_info("Initialising Balloon3\n");

	/* system bus arbiter setting
	 * - Core_Park
	 * - LCD_wt:DMA_wt:CORE_Wt = 2:3:4
	 */
	ARB_CNTRL = ARB_CORE_PARK | 0x234;

	pxa_set_i2c_info(NULL);
	if (balloon3_has(BALLOON3_FEATURE_AUDIO))
		pxa_set_ac97_info(NULL);

	if (balloon3_has(BALLOON3_FEATURE_TOPPOLY)) {
		pxa2xx_mfp_config(ARRAY_AND_SIZE(balloon3_lcd_pin_config));
		gpio_request(BALLOON3_GPIO_RUN_BACKLIGHT,
			"LCD Backlight Power");
		gpio_direction_output(BALLOON3_GPIO_RUN_BACKLIGHT, 1);
		set_pxa_fb_info(&balloon3_pxafb_info);
	}

	if (balloon3_has(BALLOON3_FEATURE_MMC)) {
		pxa2xx_mfp_config(ARRAY_AND_SIZE(balloon3_mmc_pin_config));
		pxa_set_mci_info(&balloon3_mci_platform_data);
	}
	pxa_set_ficp_info(&balloon3_ficp_platform_data);
	if (balloon3_has(BALLOON3_FEATURE_OHCI)) {
		pxa2xx_mfp_config(ARRAY_AND_SIZE(balloon3_ohci_pin_config));
		pxa_set_ohci_info(&balloon3_ohci_platform_data);
	}
	pxa_set_udc_info(&balloon3_udc_info);

	pxa2xx_mfp_config(ARRAY_AND_SIZE(balloon3_pin_config));

	platform_device_register(&balloon3led_device);
}

static struct map_desc balloon3_io_desc[] __initdata = {
	{	/* CPLD/FPGA */
		.virtual	=  BALLOON3_FPGA_VIRT,
		.pfn		= __phys_to_pfn(BALLOON3_FPGA_PHYS),
		.length		= BALLOON3_FPGA_LENGTH,
		.type		= MT_DEVICE,
	},
};

static void __init balloon3_map_io(void)
{
	pxa_map_io();
	iotable_init(balloon3_io_desc, ARRAY_SIZE(balloon3_io_desc));
}

MACHINE_START(BALLOON3, "Balloon3")
	/* Maintainer: Nick Bane. */
	.phys_io	= 0x40000000,
	.io_pg_offst	= (io_p2v(0x40000000) >> 18) & 0xfffc,
	.map_io		= balloon3_map_io,
	.init_irq	= balloon3_init_irq,
	.timer		= &pxa_timer,
	.init_machine	= balloon3_init,
	.boot_params	= PHYS_OFFSET + 0x100,
MACHINE_END