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