/*
* linux/arch/arm/mach-pxa/zylonite_pxa300.c
*
* PXA300/PXA310 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/gpio.h>
#include <asm/arch/mfp-pxa300.h>
#include <asm/arch/zylonite.h>
#define ARRAY_AND_SIZE(x) (x), ARRAY_SIZE(x)
/* PXA300/PXA310 common configurations */
static mfp_cfg_t common_mfp_cfg[] __initdata = {
/* LCD */
GPIO54_LCD_LDD_0,
GPIO55_LCD_LDD_1,
GPIO56_LCD_LDD_2,
GPIO57_LCD_LDD_3,
GPIO58_LCD_LDD_4,
GPIO59_LCD_LDD_5,
GPIO60_LCD_LDD_6,
GPIO61_LCD_LDD_7,
GPIO62_LCD_LDD_8,
GPIO63_LCD_LDD_9,
GPIO64_LCD_LDD_10,
GPIO65_LCD_LDD_11,
GPIO66_LCD_LDD_12,
GPIO67_LCD_LDD_13,
GPIO68_LCD_LDD_14,
GPIO69_LCD_LDD_15,
GPIO70_LCD_LDD_16,
GPIO71_LCD_LDD_17,
GPIO72_LCD_FCLK,
GPIO73_LCD_LCLK,
GPIO74_LCD_PCLK,
GPIO75_LCD_BIAS,
GPIO76_LCD_VSYNC,
GPIO127_LCD_CS_N,
/* BTUART */
GPIO111_UART2_RTS,
GPIO112_UART2_RXD,
GPIO113_UART2_TXD,
GPIO114_UART2_CTS,
/* STUART */
GPIO109_UART3_TXD,
GPIO110_UART3_RXD,
/* AC97 */
GPIO23_AC97_nACRESET,
GPIO24_AC97_SYSCLK,
GPIO29_AC97_BITCLK,
GPIO25_AC97_SDATA_IN_0,
GPIO27_AC97_SDATA_OUT,
GPIO28_AC97_SYNC,
/* Keypad */
GPIO107_KP_DKIN_0,
GPIO108_KP_DKIN_1,
GPIO115_KP_MKIN_0,
GPIO116_KP_MKIN_1,
GPIO117_KP_MKIN_2,
GPIO118_KP_MKIN_3,
GPIO119_KP_MKIN_4,
GPIO120_KP_MKIN_5,
GPIO2_2_KP_MKIN_6,
GPIO3_2_KP_MKIN_7,
GPIO121_KP_MKOUT_0,
GPIO122_KP_MKOUT_1,
GPIO123_KP_MKOUT_2,
GPIO124_KP_MKOUT_3,
GPIO125_KP_MKOUT_4,
GPIO4_2_KP_MKOUT_5,
GPIO5_2_KP_MKOUT_6,
GPIO6_2_KP_MKOUT_7,
};
static mfp_cfg_t pxa300_mfp_cfg[] __initdata = {
/* FFUART */
GPIO30_UART1_RXD,
GPIO31_UART1_TXD,
GPIO32_UART1_CTS,
GPIO37_UART1_RTS,
GPIO33_UART1_DCD,
GPIO34_UART1_DSR,
GPIO35_UART1_RI,
GPIO36_UART1_DTR,
/* Ethernet */
GPIO2_nCS3,
GPIO99_GPIO,
};
static mfp_cfg_t pxa310_mfp_cfg[] __initdata = {
/* FFUART */
GPIO99_UART1_RXD,
GPIO100_UART1_TXD,
GPIO101_UART1_CTS,
GPIO106_UART1_RTS,
/* Ethernet */
GPIO2_nCS3,
GPIO102_GPIO,
};
#define NUM_LCD_DETECT_PINS 7
static int lcd_detect_pins[] __initdata = {
MFP_PIN_GPIO71, /* LCD_LDD_17 - ORIENT */
MFP_PIN_GPIO70, /* LCD_LDD_16 - LCDID[5] */
MFP_PIN_GPIO75, /* LCD_BIAS - LCDID[4] */
MFP_PIN_GPIO73, /* LCD_LCLK - LCDID[3] */
MFP_PIN_GPIO72, /* LCD_FCLK - LCDID[2] */
MFP_PIN_GPIO127,/* LCD_CS_N - LCDID[1] */
MFP_PIN_GPIO76, /* LCD_VSYNC - LCDID[0] */
};
static void __init zylonite_detect_lcd_panel(void)
{
unsigned long mfpr_save[NUM_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 < NUM_LCD_DETECT_PINS; i++) {
mfpr_save[i] = pxa3xx_mfp_read(lcd_detect_pins[i]);
pxa3xx_mfp_write(lcd_detect_pins[i], 0x8440);
}
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 < NUM_LCD_DETECT_PINS; i++)
pxa3xx_mfp_write(lcd_detect_pins[i], mfpr_save[i]);
}
void __init zylonite_pxa300_init(void)
{
if (cpu_is_pxa300() || cpu_is_pxa310()) {
/* initialize MFP */
pxa3xx_mfp_config(ARRAY_AND_SIZE(common_mfp_cfg));
/* detect LCD panel */
zylonite_detect_lcd_panel();
/* GPIO pin assignment */
gpio_backlight = mfp_to_gpio(MFP_PIN_GPIO20);
}
if (cpu_is_pxa300()) {
pxa3xx_mfp_config(ARRAY_AND_SIZE(pxa300_mfp_cfg));
gpio_eth_irq = mfp_to_gpio(MFP_PIN_GPIO99);
}
if (cpu_is_pxa310()) {
pxa3xx_mfp_config(ARRAY_AND_SIZE(pxa310_mfp_cfg));
gpio_eth_irq = mfp_to_gpio(MFP_PIN_GPIO102);
}
}
