/* * 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.miao@marvell.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); } }