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/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 GPIO36_GPIO, /* SDATA_IN_1 but unused - configure to GPIO */
72
73 /* SSP3 */
74 GPIO89_SSP3_SCLK,
75 GPIO90_SSP3_FRM,
76 GPIO91_SSP3_TXD,
77 GPIO92_SSP3_RXD,
78
79 /* WM9713 IRQ */
80 GPIO15_GPIO,
81
82 /* I2C */
83 GPIO32_I2C_SCL,
84 GPIO33_I2C_SDA,
85
86 /* Keypad */
87 GPIO105_KP_DKIN_0 | MFP_LPM_EDGE_BOTH,
88 GPIO106_KP_DKIN_1 | MFP_LPM_EDGE_BOTH,
89 GPIO113_KP_MKIN_0 | MFP_LPM_EDGE_BOTH,
90 GPIO114_KP_MKIN_1 | MFP_LPM_EDGE_BOTH,
91 GPIO115_KP_MKIN_2 | MFP_LPM_EDGE_BOTH,
92 GPIO116_KP_MKIN_3 | MFP_LPM_EDGE_BOTH,
93 GPIO117_KP_MKIN_4 | MFP_LPM_EDGE_BOTH,
94 GPIO118_KP_MKIN_5 | MFP_LPM_EDGE_BOTH,
95 GPIO119_KP_MKIN_6 | MFP_LPM_EDGE_BOTH,
96 GPIO120_KP_MKIN_7 | MFP_LPM_EDGE_BOTH,
97 GPIO121_KP_MKOUT_0,
98 GPIO122_KP_MKOUT_1,
99 GPIO123_KP_MKOUT_2,
100 GPIO124_KP_MKOUT_3,
101 GPIO125_KP_MKOUT_4,
102 GPIO126_KP_MKOUT_5,
103 GPIO127_KP_MKOUT_6,
104 GPIO5_2_KP_MKOUT_7,
105
106 /* Ethernet */
107 GPIO4_nCS3,
108 GPIO90_GPIO,
109
110 /* MMC1 */
111 GPIO18_MMC1_DAT0,
112 GPIO19_MMC1_DAT1 | MFP_LPM_EDGE_BOTH,
113 GPIO20_MMC1_DAT2,
114 GPIO21_MMC1_DAT3,
115 GPIO22_MMC1_CLK,
116 GPIO23_MMC1_CMD,/* CMD0 for slot 0 */
117 GPIO31_GPIO, /* CMD1 default as GPIO for slot 0 */
118
119 /* MMC2 */
120 GPIO24_MMC2_DAT0,
121 GPIO25_MMC2_DAT1 | MFP_LPM_EDGE_BOTH,
122 GPIO26_MMC2_DAT2,
123 GPIO27_MMC2_DAT3,
124 GPIO28_MMC2_CLK,
125 GPIO29_MMC2_CMD,
126
127 /* USB Host */
128 GPIO2_2_USBH_PEN,
129 GPIO3_2_USBH_PWR,
130
131 /* Debug LEDs */
132 GPIO1_2_GPIO | MFP_LPM_DRIVE_HIGH,
133 GPIO4_2_GPIO | MFP_LPM_DRIVE_HIGH,
134 };
135
136 #define NUM_LCD_DETECT_PINS 7
137
138 static int lcd_detect_pins[] __initdata = {
139 MFP_PIN_GPIO72, /* LCD_LDD_17 - ORIENT */
140 MFP_PIN_GPIO71, /* LCD_LDD_16 - LCDID[5] */
141 MFP_PIN_GPIO17_2, /* LCD_BIAS - LCDID[4] */
142 MFP_PIN_GPIO15_2, /* LCD_LCLK - LCDID[3] */
143 MFP_PIN_GPIO14_2, /* LCD_FCLK - LCDID[2] */
144 MFP_PIN_GPIO73, /* LCD_CS_N - LCDID[1] */
145 MFP_PIN_GPIO74, /* LCD_VSYNC - LCDID[0] */
146 /*
147 * set the MFP_PIN_GPIO 14/15/17 to alternate function other than
148 * GPIO to avoid input level confliction with 14_2, 15_2, 17_2
149 */
150 MFP_PIN_GPIO14,
151 MFP_PIN_GPIO15,
152 MFP_PIN_GPIO17,
153 };
154
155 static int lcd_detect_mfpr[] __initdata = {
156 /* AF0, DS 1X, Pull Neither, Edge Clear */
157 0x8440, 0x8440, 0x8440, 0x8440, 0x8440, 0x8440, 0x8440,
158 0xc442, /* Backlight, Pull-Up, AF2 */
159 0x8445, /* AF5 */
160 0x8445, /* AF5 */
161 };
162
zylonite_detect_lcd_panel(void)163 static void __init zylonite_detect_lcd_panel(void)
164 {
165 unsigned long mfpr_save[ARRAY_SIZE(lcd_detect_pins)];
166 int i, gpio, id = 0;
167
168 /* save the original MFP settings of these pins and configure them
169 * as GPIO Input, DS01X, Pull Neither, Edge Clear
170 */
171 for (i = 0; i < ARRAY_SIZE(lcd_detect_pins); i++) {
172 mfpr_save[i] = pxa3xx_mfp_read(lcd_detect_pins[i]);
173 pxa3xx_mfp_write(lcd_detect_pins[i], lcd_detect_mfpr[i]);
174 }
175
176 for (i = 0; i < NUM_LCD_DETECT_PINS; i++) {
177 id = id << 1;
178 gpio = mfp_to_gpio(lcd_detect_pins[i]);
179 gpio_request(gpio, "LCD_ID_PINS");
180 gpio_direction_input(gpio);
181
182 if (gpio_get_value(gpio))
183 id = id | 0x1;
184 gpio_free(gpio);
185 }
186
187 /* lcd id, flush out bit 1 */
188 lcd_id = id & 0x3d;
189
190 /* lcd orientation, portrait or landscape */
191 lcd_orientation = (id >> 6) & 0x1;
192
193 /* restore the original MFP settings */
194 for (i = 0; i < ARRAY_SIZE(lcd_detect_pins); i++)
195 pxa3xx_mfp_write(lcd_detect_pins[i], mfpr_save[i]);
196 }
197
zylonite_pxa320_init(void)198 void __init zylonite_pxa320_init(void)
199 {
200 if (cpu_is_pxa320()) {
201 /* initialize MFP */
202 pxa3xx_mfp_config(ARRAY_AND_SIZE(mfp_cfg));
203
204 /* detect LCD panel */
205 zylonite_detect_lcd_panel();
206
207 /* GPIO pin assignment */
208 gpio_eth_irq = mfp_to_gpio(MFP_PIN_GPIO9);
209 gpio_debug_led1 = mfp_to_gpio(MFP_PIN_GPIO1_2);
210 gpio_debug_led2 = mfp_to_gpio(MFP_PIN_GPIO4_2);
211
212 /* WM9713 IRQ */
213 wm9713_irq = mfp_to_gpio(MFP_PIN_GPIO15);
214 }
215 }
216