/*
* linux/arch/arm/mach-pxa/zylonite_pxa320.c
*
* PXA320 specific support code for the
* PXA3xx Development Platform (aka Zylonite)
*
* Copyright (C) 2007 Marvell Internation Ltd.
* 2007-08-21: eric miao <eric.y.miao@gmail.com>
* initial version
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*/
#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/init.h>
#include <asm/arch/gpio.h>
#include <asm/arch/mfp-pxa320.h>
#include <asm/arch/zylonite.h>
#define ARRAY_AND_SIZE(x) (x), ARRAY_SIZE(x)
static mfp_cfg_t mfp_cfg[] __initdata = {
/* LCD */
GPIO6_2_LCD_LDD_0,
GPIO7_2_LCD_LDD_1,
GPIO8_2_LCD_LDD_2,
GPIO9_2_LCD_LDD_3,
GPIO10_2_LCD_LDD_4,
GPIO11_2_LCD_LDD_5,
GPIO12_2_LCD_LDD_6,
GPIO13_2_LCD_LDD_7,
GPIO63_LCD_LDD_8,
GPIO64_LCD_LDD_9,
GPIO65_LCD_LDD_10,
GPIO66_LCD_LDD_11,
GPIO67_LCD_LDD_12,
GPIO68_LCD_LDD_13,
GPIO69_LCD_LDD_14,
GPIO70_LCD_LDD_15,
GPIO71_LCD_LDD_16,
GPIO72_LCD_LDD_17,
GPIO73_LCD_CS_N,
GPIO74_LCD_VSYNC,
GPIO14_2_LCD_FCLK,
GPIO15_2_LCD_LCLK,
GPIO16_2_LCD_PCLK,
GPIO17_2_LCD_BIAS,
/* FFUART */
GPIO41_UART1_RXD,
GPIO42_UART1_TXD,
GPIO43_UART1_CTS,
GPIO44_UART1_DCD,
GPIO45_UART1_DSR,
GPIO46_UART1_RI,
GPIO47_UART1_DTR,
GPIO48_UART1_RTS,
/* AC97 */
GPIO34_AC97_SYSCLK,
GPIO35_AC97_SDATA_IN_0,
GPIO37_AC97_SDATA_OUT,
GPIO38_AC97_SYNC,
GPIO39_AC97_BITCLK,
GPIO40_AC97_nACRESET,
/* I2C */
GPIO32_I2C_SCL,
GPIO33_I2C_SDA,
/* Keypad */
GPIO105_KP_DKIN_0,
GPIO106_KP_DKIN_1,
GPIO113_KP_MKIN_0,
GPIO114_KP_MKIN_1,
GPIO115_KP_MKIN_2,
GPIO116_KP_MKIN_3,
GPIO117_KP_MKIN_4,
GPIO118_KP_MKIN_5,
GPIO119_KP_MKIN_6,
GPIO120_KP_MKIN_7,
GPIO121_KP_MKOUT_0,
GPIO122_KP_MKOUT_1,
GPIO123_KP_MKOUT_2,
GPIO124_KP_MKOUT_3,
GPIO125_KP_MKOUT_4,
GPIO126_KP_MKOUT_5,
GPIO127_KP_MKOUT_6,
GPIO5_2_KP_MKOUT_7,
/* Ethernet */
GPIO4_nCS3,
GPIO90_GPIO,
};
#define NUM_LCD_DETECT_PINS 7
static int lcd_detect_pins[] __initdata = {
MFP_PIN_GPIO72, /* LCD_LDD_17 - ORIENT */
MFP_PIN_GPIO71, /* LCD_LDD_16 - LCDID[5] */
MFP_PIN_GPIO17_2, /* LCD_BIAS - LCDID[4] */
MFP_PIN_GPIO15_2, /* LCD_LCLK - LCDID[3] */
MFP_PIN_GPIO14_2, /* LCD_FCLK - LCDID[2] */
MFP_PIN_GPIO73, /* LCD_CS_N - LCDID[1] */
MFP_PIN_GPIO74, /* LCD_VSYNC - LCDID[0] */
/*
* set the MFP_PIN_GPIO 14/15/17 to alternate function other than
* GPIO to avoid input level confliction with 14_2, 15_2, 17_2
*/
MFP_PIN_GPIO14,
MFP_PIN_GPIO15,
MFP_PIN_GPIO17,
};
static int lcd_detect_mfpr[] __initdata = {
/* AF0, DS 1X, Pull Neither, Edge Clear */
0x8440, 0x8440, 0x8440, 0x8440, 0x8440, 0x8440, 0x8440,
0xc442, /* Backlight, Pull-Up, AF2 */
0x8445, /* AF5 */
0x8445, /* AF5 */
};
static void __init zylonite_detect_lcd_panel(void)
{
unsigned long mfpr_save[ARRAY_SIZE(lcd_detect_pins)];
int i, gpio, id = 0;
/* save the original MFP settings of these pins and configure them
* as GPIO Input, DS01X, Pull Neither, Edge Clear
*/
for (i = 0; i < ARRAY_SIZE(lcd_detect_pins); i++) {
mfpr_save[i] = pxa3xx_mfp_read(lcd_detect_pins[i]);
pxa3xx_mfp_write(lcd_detect_pins[i], lcd_detect_mfpr[i]);
}
for (i = 0; i < NUM_LCD_DETECT_PINS; i++) {
id = id << 1;
gpio = mfp_to_gpio(lcd_detect_pins[i]);
gpio_direction_input(gpio);
if (gpio_get_value(gpio))
id = id | 0x1;
}
/* lcd id, flush out bit 1 */
lcd_id = id & 0x3d;
/* lcd orientation, portrait or landscape */
lcd_orientation = (id >> 6) & 0x1;
/* restore the original MFP settings */
for (i = 0; i < ARRAY_SIZE(lcd_detect_pins); i++)
pxa3xx_mfp_write(lcd_detect_pins[i], mfpr_save[i]);
}
void __init zylonite_pxa320_init(void)
{
if (cpu_is_pxa320()) {
/* initialize MFP */
pxa3xx_mfp_config(ARRAY_AND_SIZE(mfp_cfg));
/* detect LCD panel */
zylonite_detect_lcd_panel();
/* GPIO pin assignment */
gpio_backlight = mfp_to_gpio(MFP_PIN_GPIO14);
gpio_eth_irq = mfp_to_gpio(MFP_PIN_GPIO9);
}
}
