2 * linux/arch/arm/mach-pxa/zylonite_pxa320.c
4 * PXA320 specific support code for the
5 * PXA3xx Development Platform (aka Zylonite)
7 * Copyright (C) 2007 Marvell Internation Ltd.
8 * 2007-08-21: eric miao <eric.miao@marvell.com>
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.
16 #include <linux/module.h>
17 #include <linux/kernel.h>
18 #include <linux/init.h>
19 #include <linux/gpio.h>
26 static mfp_cfg_t mfp_cfg[] __initdata = {
52 GPIO14_PWM3_OUT, /* backlight */
55 GPIO41_UART1_RXD | MFP_LPM_EDGE_FALL,
59 GPIO45_UART1_DSR | MFP_LPM_EDGE_FALL,
66 GPIO35_AC97_SDATA_IN_0,
67 GPIO37_AC97_SDATA_OUT,
71 GPIO36_GPIO, /* SDATA_IN_1 but unused - configure to GPIO */
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,
112 GPIO19_MMC1_DAT1 | MFP_LPM_EDGE_BOTH,
116 GPIO23_MMC1_CMD,/* CMD0 for slot 0 */
117 GPIO31_GPIO, /* CMD1 default as GPIO for slot 0 */
121 GPIO25_MMC2_DAT1 | MFP_LPM_EDGE_BOTH,
132 GPIO1_2_GPIO | MFP_LPM_DRIVE_HIGH,
133 GPIO4_2_GPIO | MFP_LPM_DRIVE_HIGH,
136 #define NUM_LCD_DETECT_PINS 7
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] */
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
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 */
163 static void __init zylonite_detect_lcd_panel(void)
165 unsigned long mfpr_save[ARRAY_SIZE(lcd_detect_pins)];
168 /* save the original MFP settings of these pins and configure them
169 * as GPIO Input, DS01X, Pull Neither, Edge Clear
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]);
176 for (i = 0; i < NUM_LCD_DETECT_PINS; i++) {
178 gpio = mfp_to_gpio(lcd_detect_pins[i]);
179 gpio_request(gpio, "LCD_ID_PINS");
180 gpio_direction_input(gpio);
182 if (gpio_get_value(gpio))
187 /* lcd id, flush out bit 1 */
190 /* lcd orientation, portrait or landscape */
191 lcd_orientation = (id >> 6) & 0x1;
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]);
198 void __init zylonite_pxa320_init(void)
200 if (cpu_is_pxa320()) {
202 pxa3xx_mfp_config(ARRAY_AND_SIZE(mfp_cfg));
204 /* detect LCD panel */
205 zylonite_detect_lcd_panel();
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);
213 wm9713_irq = mfp_to_gpio(MFP_PIN_GPIO15);