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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> | |
80796f2a | 19 | #include <linux/gpio.h> |
2c8086a5 | 20 | |
a09e64fb RK |
21 | #include <mach/mfp-pxa320.h> |
22 | #include <mach/zylonite.h> | |
2c8086a5 | 23 | |
3d3934c3 | 24 | #include "generic.h" |
2c8086a5 | 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, | |
5cca9147 | 52 | GPIO14_PWM3_OUT, /* backlight */ |
2c8086a5 | 53 | |
54 | /* FFUART */ | |
a10476d4 | 55 | GPIO41_UART1_RXD | MFP_LPM_EDGE_FALL, |
2c8086a5 | 56 | GPIO42_UART1_TXD, |
57 | GPIO43_UART1_CTS, | |
58 | GPIO44_UART1_DCD, | |
a10476d4 | 59 | GPIO45_UART1_DSR | MFP_LPM_EDGE_FALL, |
2c8086a5 | 60 | GPIO46_UART1_RI, |
61 | GPIO47_UART1_DTR, | |
62 | GPIO48_UART1_RTS, | |
63 | ||
64 | /* AC97 */ | |
65 | GPIO34_AC97_SYSCLK, | |
66 | GPIO35_AC97_SDATA_IN_0, | |
67 | GPIO37_AC97_SDATA_OUT, | |
68 | GPIO38_AC97_SYNC, | |
69 | GPIO39_AC97_BITCLK, | |
70 | GPIO40_AC97_nACRESET, | |
71 | ||
58d27fcf MB |
72 | /* SSP3 */ |
73 | GPIO89_SSP3_SCLK, | |
74 | GPIO90_SSP3_FRM, | |
75 | GPIO91_SSP3_TXD, | |
76 | GPIO92_SSP3_RXD, | |
77 | ||
768dec4c MB |
78 | /* WM9713 IRQ */ |
79 | GPIO15_GPIO, | |
80 | ||
2c8086a5 | 81 | /* I2C */ |
82 | GPIO32_I2C_SCL, | |
83 | GPIO33_I2C_SDA, | |
84 | ||
85 | /* Keypad */ | |
a10476d4 RK |
86 | GPIO105_KP_DKIN_0 | MFP_LPM_EDGE_BOTH, |
87 | GPIO106_KP_DKIN_1 | MFP_LPM_EDGE_BOTH, | |
88 | GPIO113_KP_MKIN_0 | MFP_LPM_EDGE_BOTH, | |
89 | GPIO114_KP_MKIN_1 | MFP_LPM_EDGE_BOTH, | |
90 | GPIO115_KP_MKIN_2 | MFP_LPM_EDGE_BOTH, | |
91 | GPIO116_KP_MKIN_3 | MFP_LPM_EDGE_BOTH, | |
92 | GPIO117_KP_MKIN_4 | MFP_LPM_EDGE_BOTH, | |
93 | GPIO118_KP_MKIN_5 | MFP_LPM_EDGE_BOTH, | |
94 | GPIO119_KP_MKIN_6 | MFP_LPM_EDGE_BOTH, | |
95 | GPIO120_KP_MKIN_7 | MFP_LPM_EDGE_BOTH, | |
2c8086a5 | 96 | GPIO121_KP_MKOUT_0, |
97 | GPIO122_KP_MKOUT_1, | |
98 | GPIO123_KP_MKOUT_2, | |
99 | GPIO124_KP_MKOUT_3, | |
100 | GPIO125_KP_MKOUT_4, | |
101 | GPIO126_KP_MKOUT_5, | |
102 | GPIO127_KP_MKOUT_6, | |
103 | GPIO5_2_KP_MKOUT_7, | |
104 | ||
105 | /* Ethernet */ | |
106 | GPIO4_nCS3, | |
107 | GPIO90_GPIO, | |
fafc9d3f BW |
108 | |
109 | /* MMC1 */ | |
110 | GPIO18_MMC1_DAT0, | |
a10476d4 | 111 | GPIO19_MMC1_DAT1 | MFP_LPM_EDGE_BOTH, |
fafc9d3f BW |
112 | GPIO20_MMC1_DAT2, |
113 | GPIO21_MMC1_DAT3, | |
114 | GPIO22_MMC1_CLK, | |
115 | GPIO23_MMC1_CMD,/* CMD0 for slot 0 */ | |
116 | GPIO31_GPIO, /* CMD1 default as GPIO for slot 0 */ | |
8d33b055 BW |
117 | |
118 | /* MMC2 */ | |
119 | GPIO24_MMC2_DAT0, | |
a10476d4 | 120 | GPIO25_MMC2_DAT1 | MFP_LPM_EDGE_BOTH, |
8d33b055 BW |
121 | GPIO26_MMC2_DAT2, |
122 | GPIO27_MMC2_DAT3, | |
123 | GPIO28_MMC2_CLK, | |
124 | GPIO29_MMC2_CMD, | |
5c9f50e9 | 125 | |
7ff43535 EM |
126 | /* USB Host */ |
127 | GPIO2_2_USBH_PEN, | |
128 | GPIO3_2_USBH_PWR, | |
129 | ||
5c9f50e9 EM |
130 | /* Debug LEDs */ |
131 | GPIO1_2_GPIO | MFP_LPM_DRIVE_HIGH, | |
132 | GPIO4_2_GPIO | MFP_LPM_DRIVE_HIGH, | |
2c8086a5 | 133 | }; |
134 | ||
135 | #define NUM_LCD_DETECT_PINS 7 | |
136 | ||
137 | static int lcd_detect_pins[] __initdata = { | |
138 | MFP_PIN_GPIO72, /* LCD_LDD_17 - ORIENT */ | |
139 | MFP_PIN_GPIO71, /* LCD_LDD_16 - LCDID[5] */ | |
140 | MFP_PIN_GPIO17_2, /* LCD_BIAS - LCDID[4] */ | |
141 | MFP_PIN_GPIO15_2, /* LCD_LCLK - LCDID[3] */ | |
142 | MFP_PIN_GPIO14_2, /* LCD_FCLK - LCDID[2] */ | |
143 | MFP_PIN_GPIO73, /* LCD_CS_N - LCDID[1] */ | |
144 | MFP_PIN_GPIO74, /* LCD_VSYNC - LCDID[0] */ | |
145 | /* | |
146 | * set the MFP_PIN_GPIO 14/15/17 to alternate function other than | |
147 | * GPIO to avoid input level confliction with 14_2, 15_2, 17_2 | |
148 | */ | |
149 | MFP_PIN_GPIO14, | |
150 | MFP_PIN_GPIO15, | |
151 | MFP_PIN_GPIO17, | |
152 | }; | |
153 | ||
154 | static int lcd_detect_mfpr[] __initdata = { | |
155 | /* AF0, DS 1X, Pull Neither, Edge Clear */ | |
156 | 0x8440, 0x8440, 0x8440, 0x8440, 0x8440, 0x8440, 0x8440, | |
157 | 0xc442, /* Backlight, Pull-Up, AF2 */ | |
158 | 0x8445, /* AF5 */ | |
159 | 0x8445, /* AF5 */ | |
160 | }; | |
161 | ||
162 | static void __init zylonite_detect_lcd_panel(void) | |
163 | { | |
164 | unsigned long mfpr_save[ARRAY_SIZE(lcd_detect_pins)]; | |
165 | int i, gpio, id = 0; | |
166 | ||
167 | /* save the original MFP settings of these pins and configure them | |
168 | * as GPIO Input, DS01X, Pull Neither, Edge Clear | |
169 | */ | |
170 | for (i = 0; i < ARRAY_SIZE(lcd_detect_pins); i++) { | |
171 | mfpr_save[i] = pxa3xx_mfp_read(lcd_detect_pins[i]); | |
172 | pxa3xx_mfp_write(lcd_detect_pins[i], lcd_detect_mfpr[i]); | |
173 | } | |
174 | ||
175 | for (i = 0; i < NUM_LCD_DETECT_PINS; i++) { | |
176 | id = id << 1; | |
177 | gpio = mfp_to_gpio(lcd_detect_pins[i]); | |
178 | gpio_direction_input(gpio); | |
179 | ||
180 | if (gpio_get_value(gpio)) | |
181 | id = id | 0x1; | |
182 | } | |
183 | ||
184 | /* lcd id, flush out bit 1 */ | |
185 | lcd_id = id & 0x3d; | |
186 | ||
187 | /* lcd orientation, portrait or landscape */ | |
188 | lcd_orientation = (id >> 6) & 0x1; | |
189 | ||
190 | /* restore the original MFP settings */ | |
191 | for (i = 0; i < ARRAY_SIZE(lcd_detect_pins); i++) | |
192 | pxa3xx_mfp_write(lcd_detect_pins[i], mfpr_save[i]); | |
193 | } | |
194 | ||
195 | void __init zylonite_pxa320_init(void) | |
196 | { | |
197 | if (cpu_is_pxa320()) { | |
198 | /* initialize MFP */ | |
199 | pxa3xx_mfp_config(ARRAY_AND_SIZE(mfp_cfg)); | |
200 | ||
201 | /* detect LCD panel */ | |
202 | zylonite_detect_lcd_panel(); | |
203 | ||
204 | /* GPIO pin assignment */ | |
2c8086a5 | 205 | gpio_eth_irq = mfp_to_gpio(MFP_PIN_GPIO9); |
5c9f50e9 EM |
206 | gpio_debug_led1 = mfp_to_gpio(MFP_PIN_GPIO1_2); |
207 | gpio_debug_led2 = mfp_to_gpio(MFP_PIN_GPIO4_2); | |
fafc9d3f BW |
208 | |
209 | /* MMC card detect & write protect for controller 0 */ | |
210 | zylonite_mmc_slot[0].gpio_cd = mfp_to_gpio(MFP_PIN_GPIO1); | |
211 | zylonite_mmc_slot[0].gpio_wp = mfp_to_gpio(MFP_PIN_GPIO5); | |
768dec4c MB |
212 | |
213 | /* WM9713 IRQ */ | |
214 | wm9713_irq = mfp_to_gpio(MFP_PIN_GPIO15); | |
2c8086a5 | 215 | } |
216 | } |