summaryrefslogtreecommitdiff
path: root/arch/arm/mach-pxa/zylonite_pxa300.c
blob: cefd1c0a854aa920df0fdd5704dee5550a07123f (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
/*
 * linux/arch/arm/mach-pxa/zylonite_pxa300.c
 *
 * PXA300/PXA310 specific support code for the
 * PXA3xx Development Platform (aka Zylonite)
 *
 * Copyright (C) 2007 Marvell Internation Ltd.
 * 2007-08-21: eric miao <eric.miao@marvell.com>
 *             initial version
 *
 * 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/module.h>
#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/i2c.h>
#include <linux/i2c/pca953x.h>
#include <linux/gpio.h>

#include <mach/pxa300.h>
#include <plat/i2c.h>
#include <mach/zylonite.h>

#include "generic.h"

/* PXA300/PXA310 common configurations */
static mfp_cfg_t common_mfp_cfg[] __initdata = {
	/* LCD */
	GPIO54_LCD_LDD_0,
	GPIO55_LCD_LDD_1,
	GPIO56_LCD_LDD_2,
	GPIO57_LCD_LDD_3,
	GPIO58_LCD_LDD_4,
	GPIO59_LCD_LDD_5,
	GPIO60_LCD_LDD_6,
	GPIO61_LCD_LDD_7,
	GPIO62_LCD_LDD_8,
	GPIO63_LCD_LDD_9,
	GPIO64_LCD_LDD_10,
	GPIO65_LCD_LDD_11,
	GPIO66_LCD_LDD_12,
	GPIO67_LCD_LDD_13,
	GPIO68_LCD_LDD_14,
	GPIO69_LCD_LDD_15,
	GPIO70_LCD_LDD_16,
	GPIO71_LCD_LDD_17,
	GPIO72_LCD_FCLK,
	GPIO73_LCD_LCLK,
	GPIO74_LCD_PCLK,
	GPIO75_LCD_BIAS,
	GPIO76_LCD_VSYNC,
	GPIO127_LCD_CS_N,
	GPIO20_PWM3_OUT,	/* backlight */

	/* BTUART */
	GPIO111_UART2_RTS,
	GPIO112_UART2_RXD | MFP_LPM_EDGE_FALL,
	GPIO113_UART2_TXD,
	GPIO114_UART2_CTS | MFP_LPM_EDGE_BOTH,

	/* STUART */
	GPIO109_UART3_TXD,
	GPIO110_UART3_RXD | MFP_LPM_EDGE_FALL,

	/* AC97 */
	GPIO23_AC97_nACRESET,
	GPIO24_AC97_SYSCLK,
	GPIO29_AC97_BITCLK,
	GPIO25_AC97_SDATA_IN_0,
	GPIO27_AC97_SDATA_OUT,
	GPIO28_AC97_SYNC,
	GPIO17_GPIO,	/* SDATA_IN_1 but unused - configure to GPIO */

	/* SSP3 */
	GPIO91_SSP3_SCLK,
	GPIO92_SSP3_FRM,
	GPIO93_SSP3_TXD,
	GPIO94_SSP3_RXD,

	/* WM9713 IRQ */
	GPIO26_GPIO,

	/* Keypad */
	GPIO107_KP_DKIN_0 | MFP_LPM_EDGE_BOTH,
	GPIO108_KP_DKIN_1 | MFP_LPM_EDGE_BOTH,
	GPIO115_KP_MKIN_0 | MFP_LPM_EDGE_BOTH,
	GPIO116_KP_MKIN_1 | MFP_LPM_EDGE_BOTH,
	GPIO117_KP_MKIN_2 | MFP_LPM_EDGE_BOTH,
	GPIO118_KP_MKIN_3 | MFP_LPM_EDGE_BOTH,
	GPIO119_KP_MKIN_4 | MFP_LPM_EDGE_BOTH,
	GPIO120_KP_MKIN_5 | MFP_LPM_EDGE_BOTH,
	GPIO2_2_KP_MKIN_6 | MFP_LPM_EDGE_BOTH,
	GPIO3_2_KP_MKIN_7 | MFP_LPM_EDGE_BOTH,
	GPIO121_KP_MKOUT_0,
	GPIO122_KP_MKOUT_1,
	GPIO123_KP_MKOUT_2,
	GPIO124_KP_MKOUT_3,
	GPIO125_KP_MKOUT_4,
	GPIO4_2_KP_MKOUT_5,
	GPIO5_2_KP_MKOUT_6,
	GPIO6_2_KP_MKOUT_7,

	/* MMC1 */
	GPIO3_MMC1_DAT0,
	GPIO4_MMC1_DAT1 | MFP_LPM_EDGE_BOTH,
	GPIO5_MMC1_DAT2,
	GPIO6_MMC1_DAT3,
	GPIO7_MMC1_CLK,
	GPIO8_MMC1_CMD,	/* CMD0 for slot 0 */
	GPIO15_GPIO,	/* CMD1 default as GPIO for slot 0 */

	/* MMC2 */
	GPIO9_MMC2_DAT0,
	GPIO10_MMC2_DAT1 | MFP_LPM_EDGE_BOTH,
	GPIO11_MMC2_DAT2,
	GPIO12_MMC2_DAT3,
	GPIO13_MMC2_CLK,
	GPIO14_MMC2_CMD,

	/* USB Host */
	GPIO0_2_USBH_PEN,
	GPIO1_2_USBH_PWR,

	/* Standard I2C */
	GPIO21_I2C_SCL,
	GPIO22_I2C_SDA,

	/* GPIO */
	GPIO18_GPIO,	/* GPIO Expander #0 INT_N */
	GPIO19_GPIO,	/* GPIO Expander #1 INT_N */
};

static mfp_cfg_t pxa300_mfp_cfg[] __initdata = {
	/* FFUART */
	GPIO30_UART1_RXD | MFP_LPM_EDGE_FALL,
	GPIO31_UART1_TXD,
	GPIO32_UART1_CTS,
	GPIO37_UART1_RTS,
	GPIO33_UART1_DCD,
	GPIO34_UART1_DSR | MFP_LPM_EDGE_FALL,
	GPIO35_UART1_RI,
	GPIO36_UART1_DTR,

	/* Ethernet */
	GPIO2_nCS3,
	GPIO99_GPIO,
};

static mfp_cfg_t pxa310_mfp_cfg[] __initdata = {
	/* FFUART */
	GPIO99_UART1_RXD | MFP_LPM_EDGE_FALL,
	GPIO100_UART1_TXD,
	GPIO101_UART1_CTS,
	GPIO106_UART1_RTS,

	/* Ethernet */
	GPIO2_nCS3,
	GPIO102_GPIO,

	/* MMC3 */
	GPIO7_2_MMC3_DAT0,
	GPIO8_2_MMC3_DAT1 | MFP_LPM_EDGE_BOTH,
	GPIO9_2_MMC3_DAT2,
	GPIO10_2_MMC3_DAT3,
	GPIO103_MMC3_CLK,
	GPIO105_MMC3_CMD,
};

#define NUM_LCD_DETECT_PINS	7

static int lcd_detect_pins[] __initdata = {
	MFP_PIN_GPIO71,	/* LCD_LDD_17 - ORIENT */
	MFP_PIN_GPIO70, /* LCD_LDD_16 - LCDID[5] */
	MFP_PIN_GPIO75, /* LCD_BIAS   - LCDID[4] */
	MFP_PIN_GPIO73, /* LCD_LCLK   - LCDID[3] */
	MFP_PIN_GPIO72, /* LCD_FCLK   - LCDID[2] */
	MFP_PIN_GPIO127,/* LCD_CS_N   - LCDID[1] */
	MFP_PIN_GPIO76, /* LCD_VSYNC  - LCDID[0] */
};

static void __init zylonite_detect_lcd_panel(void)
{
	unsigned long mfpr_save[NUM_LCD_DETECT_PINS];
	int i, gpio, id = 0;

	/* save the original MFP settings of these pins and configure
	 * them as GPIO Input, DS01X, Pull Neither, Edge Clear
	 */
	for (i = 0; i < NUM_LCD_DETECT_PINS; i++) {
		mfpr_save[i] = pxa3xx_mfp_read(lcd_detect_pins[i]);
		pxa3xx_mfp_write(lcd_detect_pins[i], 0x8440);
	}

	for (i = 0; i < NUM_LCD_DETECT_PINS; i++) {
		id = id << 1;
		gpio = mfp_to_gpio(lcd_detect_pins[i]);
		gpio_direction_input(gpio);

		if (gpio_get_value(gpio))
			id = id | 0x1;
	}

	/* lcd id, flush out bit 1 */
	lcd_id = id & 0x3d;

	/* lcd orientation, portrait or landscape */
	lcd_orientation = (id >> 6) & 0x1;

	/* restore the original MFP settings */
	for (i = 0; i < NUM_LCD_DETECT_PINS; i++)
		pxa3xx_mfp_write(lcd_detect_pins[i], mfpr_save[i]);
}

#if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
static struct pca953x_platform_data gpio_exp[] = {
	[0] = {
		.gpio_base	= 128,
	},
	[1] = {
		.gpio_base	= 144,
	},
};

static struct i2c_board_info zylonite_i2c_board_info[] = {
	{
		.type		= "pca9539",
		.addr		= 0x74,
		.platform_data	= &gpio_exp[0],
		.irq		= IRQ_GPIO(18),
	}, {
		.type		= "pca9539",
		.addr		= 0x75,
		.platform_data	= &gpio_exp[1],
		.irq		= IRQ_GPIO(19),
	},
};

static void __init zylonite_init_i2c(void)
{
	pxa_set_i2c_info(NULL);
	i2c_register_board_info(0, ARRAY_AND_SIZE(zylonite_i2c_board_info));
}
#else
static inline void zylonite_init_i2c(void) {}
#endif

void __init zylonite_pxa300_init(void)
{
	if (cpu_is_pxa300() || cpu_is_pxa310()) {
		/* initialize MFP */
		pxa3xx_mfp_config(ARRAY_AND_SIZE(common_mfp_cfg));

		/* detect LCD panel */
		zylonite_detect_lcd_panel();

		/* MMC card detect & write protect for controller 0 */
		zylonite_mmc_slot[0].gpio_cd  = EXT_GPIO(0);
		zylonite_mmc_slot[0].gpio_wp  = EXT_GPIO(2);

		/* WM9713 IRQ */
		wm9713_irq = mfp_to_gpio(MFP_PIN_GPIO26);

		zylonite_init_i2c();
	}

	if (cpu_is_pxa300()) {
		pxa3xx_mfp_config(ARRAY_AND_SIZE(pxa300_mfp_cfg));
		gpio_eth_irq = mfp_to_gpio(MFP_PIN_GPIO99);
	}

	if (cpu_is_pxa310()) {
		pxa3xx_mfp_config(ARRAY_AND_SIZE(pxa310_mfp_cfg));
		gpio_eth_irq = mfp_to_gpio(MFP_PIN_GPIO102);

		/* MMC card detect & write protect for controller 2 */
		zylonite_mmc_slot[2].gpio_cd = EXT_GPIO(30);
		zylonite_mmc_slot[2].gpio_wp = EXT_GPIO(31);
	}

	/* GPIOs for Debug LEDs */
	gpio_debug_led1 = EXT_GPIO(25);
	gpio_debug_led2 = EXT_GPIO(26);
}