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
|
/*
* linux/arch/arm/mach-pxa/zylonite_pxa320.c
*
* PXA320 specific support code for the
* PXA3xx Development Platform (aka Zylonite)
*
* Copyright (C) 2007 Marvell Internation Ltd.
* 2007-08-21: eric miao <eric.y.miao@gmail.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 <asm/arch/gpio.h>
#include <asm/arch/mfp-pxa320.h>
#include <asm/arch/zylonite.h>
#define ARRAY_AND_SIZE(x) (x), ARRAY_SIZE(x)
static mfp_cfg_t mfp_cfg[] __initdata = {
/* LCD */
GPIO6_2_LCD_LDD_0,
GPIO7_2_LCD_LDD_1,
GPIO8_2_LCD_LDD_2,
GPIO9_2_LCD_LDD_3,
GPIO10_2_LCD_LDD_4,
GPIO11_2_LCD_LDD_5,
GPIO12_2_LCD_LDD_6,
GPIO13_2_LCD_LDD_7,
GPIO63_LCD_LDD_8,
GPIO64_LCD_LDD_9,
GPIO65_LCD_LDD_10,
GPIO66_LCD_LDD_11,
GPIO67_LCD_LDD_12,
GPIO68_LCD_LDD_13,
GPIO69_LCD_LDD_14,
GPIO70_LCD_LDD_15,
GPIO71_LCD_LDD_16,
GPIO72_LCD_LDD_17,
GPIO73_LCD_CS_N,
GPIO74_LCD_VSYNC,
GPIO14_2_LCD_FCLK,
GPIO15_2_LCD_LCLK,
GPIO16_2_LCD_PCLK,
GPIO17_2_LCD_BIAS,
/* FFUART */
GPIO41_UART1_RXD,
GPIO42_UART1_TXD,
GPIO43_UART1_CTS,
GPIO44_UART1_DCD,
GPIO45_UART1_DSR,
GPIO46_UART1_RI,
GPIO47_UART1_DTR,
GPIO48_UART1_RTS,
/* AC97 */
GPIO34_AC97_SYSCLK,
GPIO35_AC97_SDATA_IN_0,
GPIO37_AC97_SDATA_OUT,
GPIO38_AC97_SYNC,
GPIO39_AC97_BITCLK,
GPIO40_AC97_nACRESET,
/* I2C */
GPIO32_I2C_SCL,
GPIO33_I2C_SDA,
/* Keypad */
GPIO105_KP_DKIN_0,
GPIO106_KP_DKIN_1,
GPIO113_KP_MKIN_0,
GPIO114_KP_MKIN_1,
GPIO115_KP_MKIN_2,
GPIO116_KP_MKIN_3,
GPIO117_KP_MKIN_4,
GPIO118_KP_MKIN_5,
GPIO119_KP_MKIN_6,
GPIO120_KP_MKIN_7,
GPIO121_KP_MKOUT_0,
GPIO122_KP_MKOUT_1,
GPIO123_KP_MKOUT_2,
GPIO124_KP_MKOUT_3,
GPIO125_KP_MKOUT_4,
GPIO126_KP_MKOUT_5,
GPIO127_KP_MKOUT_6,
GPIO5_2_KP_MKOUT_7,
/* Ethernet */
GPIO4_nCS3,
GPIO90_GPIO,
};
#define NUM_LCD_DETECT_PINS 7
static int lcd_detect_pins[] __initdata = {
MFP_PIN_GPIO72, /* LCD_LDD_17 - ORIENT */
MFP_PIN_GPIO71, /* LCD_LDD_16 - LCDID[5] */
MFP_PIN_GPIO17_2, /* LCD_BIAS - LCDID[4] */
MFP_PIN_GPIO15_2, /* LCD_LCLK - LCDID[3] */
MFP_PIN_GPIO14_2, /* LCD_FCLK - LCDID[2] */
MFP_PIN_GPIO73, /* LCD_CS_N - LCDID[1] */
MFP_PIN_GPIO74, /* LCD_VSYNC - LCDID[0] */
/*
* set the MFP_PIN_GPIO 14/15/17 to alternate function other than
* GPIO to avoid input level confliction with 14_2, 15_2, 17_2
*/
MFP_PIN_GPIO14,
MFP_PIN_GPIO15,
MFP_PIN_GPIO17,
};
static int lcd_detect_mfpr[] __initdata = {
/* AF0, DS 1X, Pull Neither, Edge Clear */
0x8440, 0x8440, 0x8440, 0x8440, 0x8440, 0x8440, 0x8440,
0xc442, /* Backlight, Pull-Up, AF2 */
0x8445, /* AF5 */
0x8445, /* AF5 */
};
static void __init zylonite_detect_lcd_panel(void)
{
unsigned long mfpr_save[ARRAY_SIZE(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 < ARRAY_SIZE(lcd_detect_pins); i++) {
mfpr_save[i] = pxa3xx_mfp_read(lcd_detect_pins[i]);
pxa3xx_mfp_write(lcd_detect_pins[i], lcd_detect_mfpr[i]);
}
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 < ARRAY_SIZE(lcd_detect_pins); i++)
pxa3xx_mfp_write(lcd_detect_pins[i], mfpr_save[i]);
}
void __init zylonite_pxa320_init(void)
{
if (cpu_is_pxa320()) {
/* initialize MFP */
pxa3xx_mfp_config(ARRAY_AND_SIZE(mfp_cfg));
/* detect LCD panel */
zylonite_detect_lcd_panel();
/* GPIO pin assignment */
gpio_backlight = mfp_to_gpio(MFP_PIN_GPIO14);
gpio_eth_irq = mfp_to_gpio(MFP_PIN_GPIO9);
}
}
|
