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.
8 * 2007-08-21: eric miao <eric.miao@marvell.com>
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 #include <linux/gpio.h>
20
21 #include <mach/mfp-pxa320.h>
22 #include <mach/zylonite.h>
23
24 #include "generic.h"
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 GPIO14_PWM3_OUT, /* backlight */
53
54 /* FFUART */
55 GPIO41_UART1_RXD | MFP_LPM_EDGE_FALL,
56 GPIO42_UART1_TXD,
57 GPIO43_UART1_CTS,
58 GPIO44_UART1_DCD,
59 GPIO45_UART1_DSR | MFP_LPM_EDGE_FALL,
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
72 /* SSP3 */
73 GPIO89_SSP3_SCLK,
74 GPIO90_SSP3_FRM,
75 GPIO91_SSP3_TXD,
76 GPIO92_SSP3_RXD,
77
78 /* WM9713 IRQ */
79 GPIO15_GPIO,
80
81 /* I2C */
82 GPIO32_I2C_SCL,
83 GPIO33_I2C_SDA,
84
85 /* Keypad */
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,
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,
108
109 /* MMC1 */
110 GPIO18_MMC1_DAT0,
111 GPIO19_MMC1_DAT1 | MFP_LPM_EDGE_BOTH,
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 */
117
118 /* MMC2 */
119 GPIO24_MMC2_DAT0,
120 GPIO25_MMC2_DAT1 | MFP_LPM_EDGE_BOTH,
121 GPIO26_MMC2_DAT2,
122 GPIO27_MMC2_DAT3,
123 GPIO28_MMC2_CLK,
124 GPIO29_MMC2_CMD,
125
126 /* USB Host */
127 GPIO2_2_USBH_PEN,
128 GPIO3_2_USBH_PWR,
129
130 /* Debug LEDs */
131 GPIO1_2_GPIO | MFP_LPM_DRIVE_HIGH,
132 GPIO4_2_GPIO | MFP_LPM_DRIVE_HIGH,
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
zylonite_detect_lcd_panel(void)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
zylonite_pxa320_init(void)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 */
205 gpio_eth_irq = mfp_to_gpio(MFP_PIN_GPIO9);
206 gpio_debug_led1 = mfp_to_gpio(MFP_PIN_GPIO1_2);
207 gpio_debug_led2 = mfp_to_gpio(MFP_PIN_GPIO4_2);
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);
212
213 /* WM9713 IRQ */
214 wm9713_irq = mfp_to_gpio(MFP_PIN_GPIO15);
215 }
216 }
217