2c8086a5 |
1 | /* |
2 | * linux/arch/arm/mach-pxa/zylonite_pxa320.c |
3 | * |
4 | * PXA320 specific support code for the |
5 | * PXA3xx Development Platform (aka Zylonite) |
6 | * |
7 | * Copyright (C) 2007 Marvell Internation Ltd. |
e9bba8ee |
8 | * 2007-08-21: eric miao <eric.miao@marvell.com> |
2c8086a5 |
9 | * initial version |
10 | * |
11 | * This program is free software; you can redistribute it and/or modify |
12 | * it under the terms of the GNU General Public License version 2 as |
13 | * published by the Free Software Foundation. |
14 | */ |
15 | |
16 | #include <linux/module.h> |
17 | #include <linux/kernel.h> |
18 | #include <linux/init.h> |
19 | |
20 | #include <asm/arch/gpio.h> |
21 | #include <asm/arch/mfp-pxa320.h> |
22 | #include <asm/arch/zylonite.h> |
23 | |
24 | #define ARRAY_AND_SIZE(x) (x), ARRAY_SIZE(x) |
25 | |
26 | static mfp_cfg_t mfp_cfg[] __initdata = { |
27 | /* LCD */ |
28 | GPIO6_2_LCD_LDD_0, |
29 | GPIO7_2_LCD_LDD_1, |
30 | GPIO8_2_LCD_LDD_2, |
31 | GPIO9_2_LCD_LDD_3, |
32 | GPIO10_2_LCD_LDD_4, |
33 | GPIO11_2_LCD_LDD_5, |
34 | GPIO12_2_LCD_LDD_6, |
35 | GPIO13_2_LCD_LDD_7, |
36 | GPIO63_LCD_LDD_8, |
37 | GPIO64_LCD_LDD_9, |
38 | GPIO65_LCD_LDD_10, |
39 | GPIO66_LCD_LDD_11, |
40 | GPIO67_LCD_LDD_12, |
41 | GPIO68_LCD_LDD_13, |
42 | GPIO69_LCD_LDD_14, |
43 | GPIO70_LCD_LDD_15, |
44 | GPIO71_LCD_LDD_16, |
45 | GPIO72_LCD_LDD_17, |
46 | GPIO73_LCD_CS_N, |
47 | GPIO74_LCD_VSYNC, |
48 | GPIO14_2_LCD_FCLK, |
49 | GPIO15_2_LCD_LCLK, |
50 | GPIO16_2_LCD_PCLK, |
51 | GPIO17_2_LCD_BIAS, |
52 | |
53 | /* FFUART */ |
54 | GPIO41_UART1_RXD, |
55 | GPIO42_UART1_TXD, |
56 | GPIO43_UART1_CTS, |
57 | GPIO44_UART1_DCD, |
58 | GPIO45_UART1_DSR, |
59 | GPIO46_UART1_RI, |
60 | GPIO47_UART1_DTR, |
61 | GPIO48_UART1_RTS, |
62 | |
63 | /* AC97 */ |
64 | GPIO34_AC97_SYSCLK, |
65 | GPIO35_AC97_SDATA_IN_0, |
66 | GPIO37_AC97_SDATA_OUT, |
67 | GPIO38_AC97_SYNC, |
68 | GPIO39_AC97_BITCLK, |
69 | GPIO40_AC97_nACRESET, |
70 | |
71 | /* I2C */ |
72 | GPIO32_I2C_SCL, |
73 | GPIO33_I2C_SDA, |
74 | |
75 | /* Keypad */ |
76 | GPIO105_KP_DKIN_0, |
77 | GPIO106_KP_DKIN_1, |
78 | GPIO113_KP_MKIN_0, |
79 | GPIO114_KP_MKIN_1, |
80 | GPIO115_KP_MKIN_2, |
81 | GPIO116_KP_MKIN_3, |
82 | GPIO117_KP_MKIN_4, |
83 | GPIO118_KP_MKIN_5, |
84 | GPIO119_KP_MKIN_6, |
85 | GPIO120_KP_MKIN_7, |
86 | GPIO121_KP_MKOUT_0, |
87 | GPIO122_KP_MKOUT_1, |
88 | GPIO123_KP_MKOUT_2, |
89 | GPIO124_KP_MKOUT_3, |
90 | GPIO125_KP_MKOUT_4, |
91 | GPIO126_KP_MKOUT_5, |
92 | GPIO127_KP_MKOUT_6, |
93 | GPIO5_2_KP_MKOUT_7, |
94 | |
95 | /* Ethernet */ |
96 | GPIO4_nCS3, |
97 | GPIO90_GPIO, |
98 | }; |
99 | |
100 | #define NUM_LCD_DETECT_PINS 7 |
101 | |
102 | static int lcd_detect_pins[] __initdata = { |
103 | MFP_PIN_GPIO72, /* LCD_LDD_17 - ORIENT */ |
104 | MFP_PIN_GPIO71, /* LCD_LDD_16 - LCDID[5] */ |
105 | MFP_PIN_GPIO17_2, /* LCD_BIAS - LCDID[4] */ |
106 | MFP_PIN_GPIO15_2, /* LCD_LCLK - LCDID[3] */ |
107 | MFP_PIN_GPIO14_2, /* LCD_FCLK - LCDID[2] */ |
108 | MFP_PIN_GPIO73, /* LCD_CS_N - LCDID[1] */ |
109 | MFP_PIN_GPIO74, /* LCD_VSYNC - LCDID[0] */ |
110 | /* |
111 | * set the MFP_PIN_GPIO 14/15/17 to alternate function other than |
112 | * GPIO to avoid input level confliction with 14_2, 15_2, 17_2 |
113 | */ |
114 | MFP_PIN_GPIO14, |
115 | MFP_PIN_GPIO15, |
116 | MFP_PIN_GPIO17, |
117 | }; |
118 | |
119 | static int lcd_detect_mfpr[] __initdata = { |
120 | /* AF0, DS 1X, Pull Neither, Edge Clear */ |
121 | 0x8440, 0x8440, 0x8440, 0x8440, 0x8440, 0x8440, 0x8440, |
122 | 0xc442, /* Backlight, Pull-Up, AF2 */ |
123 | 0x8445, /* AF5 */ |
124 | 0x8445, /* AF5 */ |
125 | }; |
126 | |
127 | static void __init zylonite_detect_lcd_panel(void) |
128 | { |
129 | unsigned long mfpr_save[ARRAY_SIZE(lcd_detect_pins)]; |
130 | int i, gpio, id = 0; |
131 | |
132 | /* save the original MFP settings of these pins and configure them |
133 | * as GPIO Input, DS01X, Pull Neither, Edge Clear |
134 | */ |
135 | for (i = 0; i < ARRAY_SIZE(lcd_detect_pins); i++) { |
136 | mfpr_save[i] = pxa3xx_mfp_read(lcd_detect_pins[i]); |
137 | pxa3xx_mfp_write(lcd_detect_pins[i], lcd_detect_mfpr[i]); |
138 | } |
139 | |
140 | for (i = 0; i < NUM_LCD_DETECT_PINS; i++) { |
141 | id = id << 1; |
142 | gpio = mfp_to_gpio(lcd_detect_pins[i]); |
143 | gpio_direction_input(gpio); |
144 | |
145 | if (gpio_get_value(gpio)) |
146 | id = id | 0x1; |
147 | } |
148 | |
149 | /* lcd id, flush out bit 1 */ |
150 | lcd_id = id & 0x3d; |
151 | |
152 | /* lcd orientation, portrait or landscape */ |
153 | lcd_orientation = (id >> 6) & 0x1; |
154 | |
155 | /* restore the original MFP settings */ |
156 | for (i = 0; i < ARRAY_SIZE(lcd_detect_pins); i++) |
157 | pxa3xx_mfp_write(lcd_detect_pins[i], mfpr_save[i]); |
158 | } |
159 | |
160 | void __init zylonite_pxa320_init(void) |
161 | { |
162 | if (cpu_is_pxa320()) { |
163 | /* initialize MFP */ |
164 | pxa3xx_mfp_config(ARRAY_AND_SIZE(mfp_cfg)); |
165 | |
166 | /* detect LCD panel */ |
167 | zylonite_detect_lcd_panel(); |
168 | |
169 | /* GPIO pin assignment */ |
170 | gpio_backlight = mfp_to_gpio(MFP_PIN_GPIO14); |
171 | gpio_eth_irq = mfp_to_gpio(MFP_PIN_GPIO9); |
172 | } |
173 | } |