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2c8086a5 | 1 | /* |
2 | * linux/arch/arm/mach-pxa/zylonite_pxa300.c | |
3 | * | |
4 | * PXA300/PXA310 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/gpio.h> | |
21 | #include <asm/arch/mfp-pxa300.h> | |
22 | #include <asm/arch/zylonite.h> | |
23 | ||
24 | #define ARRAY_AND_SIZE(x) (x), ARRAY_SIZE(x) | |
25 | ||
26 | /* PXA300/PXA310 common configurations */ | |
27 | static mfp_cfg_t common_mfp_cfg[] __initdata = { | |
28 | /* LCD */ | |
29 | GPIO54_LCD_LDD_0, | |
30 | GPIO55_LCD_LDD_1, | |
31 | GPIO56_LCD_LDD_2, | |
32 | GPIO57_LCD_LDD_3, | |
33 | GPIO58_LCD_LDD_4, | |
34 | GPIO59_LCD_LDD_5, | |
35 | GPIO60_LCD_LDD_6, | |
36 | GPIO61_LCD_LDD_7, | |
37 | GPIO62_LCD_LDD_8, | |
38 | GPIO63_LCD_LDD_9, | |
39 | GPIO64_LCD_LDD_10, | |
40 | GPIO65_LCD_LDD_11, | |
41 | GPIO66_LCD_LDD_12, | |
42 | GPIO67_LCD_LDD_13, | |
43 | GPIO68_LCD_LDD_14, | |
44 | GPIO69_LCD_LDD_15, | |
45 | GPIO70_LCD_LDD_16, | |
46 | GPIO71_LCD_LDD_17, | |
47 | GPIO72_LCD_FCLK, | |
48 | GPIO73_LCD_LCLK, | |
49 | GPIO74_LCD_PCLK, | |
50 | GPIO75_LCD_BIAS, | |
51 | GPIO76_LCD_VSYNC, | |
52 | GPIO127_LCD_CS_N, | |
53 | ||
54 | /* BTUART */ | |
55 | GPIO111_UART2_RTS, | |
56 | GPIO112_UART2_RXD, | |
57 | GPIO113_UART2_TXD, | |
58 | GPIO114_UART2_CTS, | |
59 | ||
60 | /* STUART */ | |
61 | GPIO109_UART3_TXD, | |
62 | GPIO110_UART3_RXD, | |
63 | ||
64 | /* AC97 */ | |
65 | GPIO23_AC97_nACRESET, | |
66 | GPIO24_AC97_SYSCLK, | |
67 | GPIO29_AC97_BITCLK, | |
68 | GPIO25_AC97_SDATA_IN_0, | |
69 | GPIO27_AC97_SDATA_OUT, | |
70 | GPIO28_AC97_SYNC, | |
71 | ||
72 | /* Keypad */ | |
73 | GPIO107_KP_DKIN_0, | |
74 | GPIO108_KP_DKIN_1, | |
75 | GPIO115_KP_MKIN_0, | |
76 | GPIO116_KP_MKIN_1, | |
77 | GPIO117_KP_MKIN_2, | |
78 | GPIO118_KP_MKIN_3, | |
79 | GPIO119_KP_MKIN_4, | |
80 | GPIO120_KP_MKIN_5, | |
81 | GPIO2_2_KP_MKIN_6, | |
82 | GPIO3_2_KP_MKIN_7, | |
83 | GPIO121_KP_MKOUT_0, | |
84 | GPIO122_KP_MKOUT_1, | |
85 | GPIO123_KP_MKOUT_2, | |
86 | GPIO124_KP_MKOUT_3, | |
87 | GPIO125_KP_MKOUT_4, | |
88 | GPIO4_2_KP_MKOUT_5, | |
89 | GPIO5_2_KP_MKOUT_6, | |
90 | GPIO6_2_KP_MKOUT_7, | |
91 | }; | |
92 | ||
93 | static mfp_cfg_t pxa300_mfp_cfg[] __initdata = { | |
94 | /* FFUART */ | |
95 | GPIO30_UART1_RXD, | |
96 | GPIO31_UART1_TXD, | |
97 | GPIO32_UART1_CTS, | |
98 | GPIO37_UART1_RTS, | |
99 | GPIO33_UART1_DCD, | |
100 | GPIO34_UART1_DSR, | |
101 | GPIO35_UART1_RI, | |
102 | GPIO36_UART1_DTR, | |
103 | ||
104 | /* Ethernet */ | |
105 | GPIO2_nCS3, | |
106 | GPIO99_GPIO, | |
107 | }; | |
108 | ||
109 | static mfp_cfg_t pxa310_mfp_cfg[] __initdata = { | |
110 | /* FFUART */ | |
111 | GPIO99_UART1_RXD, | |
112 | GPIO100_UART1_TXD, | |
113 | GPIO101_UART1_CTS, | |
114 | GPIO106_UART1_RTS, | |
115 | ||
116 | /* Ethernet */ | |
117 | GPIO2_nCS3, | |
118 | GPIO102_GPIO, | |
119 | }; | |
120 | ||
121 | #define NUM_LCD_DETECT_PINS 7 | |
122 | ||
123 | static int lcd_detect_pins[] __initdata = { | |
124 | MFP_PIN_GPIO71, /* LCD_LDD_17 - ORIENT */ | |
125 | MFP_PIN_GPIO70, /* LCD_LDD_16 - LCDID[5] */ | |
126 | MFP_PIN_GPIO75, /* LCD_BIAS - LCDID[4] */ | |
127 | MFP_PIN_GPIO73, /* LCD_LCLK - LCDID[3] */ | |
128 | MFP_PIN_GPIO72, /* LCD_FCLK - LCDID[2] */ | |
129 | MFP_PIN_GPIO127,/* LCD_CS_N - LCDID[1] */ | |
130 | MFP_PIN_GPIO76, /* LCD_VSYNC - LCDID[0] */ | |
131 | }; | |
132 | ||
133 | static void __init zylonite_detect_lcd_panel(void) | |
134 | { | |
135 | unsigned long mfpr_save[NUM_LCD_DETECT_PINS]; | |
136 | int i, gpio, id = 0; | |
137 | ||
138 | /* save the original MFP settings of these pins and configure | |
139 | * them as GPIO Input, DS01X, Pull Neither, Edge Clear | |
140 | */ | |
141 | for (i = 0; i < NUM_LCD_DETECT_PINS; i++) { | |
142 | mfpr_save[i] = pxa3xx_mfp_read(lcd_detect_pins[i]); | |
143 | pxa3xx_mfp_write(lcd_detect_pins[i], 0x8440); | |
144 | } | |
145 | ||
146 | for (i = 0; i < NUM_LCD_DETECT_PINS; i++) { | |
147 | id = id << 1; | |
148 | gpio = mfp_to_gpio(lcd_detect_pins[i]); | |
149 | gpio_direction_input(gpio); | |
150 | ||
151 | if (gpio_get_value(gpio)) | |
152 | id = id | 0x1; | |
153 | } | |
154 | ||
155 | /* lcd id, flush out bit 1 */ | |
156 | lcd_id = id & 0x3d; | |
157 | ||
158 | /* lcd orientation, portrait or landscape */ | |
159 | lcd_orientation = (id >> 6) & 0x1; | |
160 | ||
161 | /* restore the original MFP settings */ | |
162 | for (i = 0; i < NUM_LCD_DETECT_PINS; i++) | |
163 | pxa3xx_mfp_write(lcd_detect_pins[i], mfpr_save[i]); | |
164 | } | |
165 | ||
166 | void __init zylonite_pxa300_init(void) | |
167 | { | |
168 | if (cpu_is_pxa300() || cpu_is_pxa310()) { | |
169 | /* initialize MFP */ | |
170 | pxa3xx_mfp_config(ARRAY_AND_SIZE(common_mfp_cfg)); | |
171 | ||
172 | /* detect LCD panel */ | |
173 | zylonite_detect_lcd_panel(); | |
174 | ||
175 | /* GPIO pin assignment */ | |
176 | gpio_backlight = mfp_to_gpio(MFP_PIN_GPIO20); | |
177 | } | |
178 | ||
179 | if (cpu_is_pxa300()) { | |
180 | pxa3xx_mfp_config(ARRAY_AND_SIZE(pxa300_mfp_cfg)); | |
181 | gpio_eth_irq = mfp_to_gpio(MFP_PIN_GPIO99); | |
182 | } | |
183 | ||
184 | if (cpu_is_pxa310()) { | |
185 | pxa3xx_mfp_config(ARRAY_AND_SIZE(pxa310_mfp_cfg)); | |
186 | gpio_eth_irq = mfp_to_gpio(MFP_PIN_GPIO102); | |
187 | } | |
188 | } |