289 lines
6.4 KiB
C
289 lines
6.4 KiB
C
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/*
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* linux/arch/arm/mach-pxa/zylonite_pxa300.c
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*
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* PXA300/PXA310 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 <linux/i2c.h>
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#include <linux/i2c/pca953x.h>
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#include <linux/gpio.h>
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#include <mach/pxa300.h>
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#include <plat/i2c.h>
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#include <mach/zylonite.h>
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#include "generic.h"
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/* PXA300/PXA310 common configurations */
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static mfp_cfg_t common_mfp_cfg[] __initdata = {
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/* LCD */
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GPIO54_LCD_LDD_0,
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GPIO55_LCD_LDD_1,
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GPIO56_LCD_LDD_2,
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GPIO57_LCD_LDD_3,
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GPIO58_LCD_LDD_4,
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GPIO59_LCD_LDD_5,
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GPIO60_LCD_LDD_6,
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GPIO61_LCD_LDD_7,
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GPIO62_LCD_LDD_8,
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GPIO63_LCD_LDD_9,
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GPIO64_LCD_LDD_10,
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GPIO65_LCD_LDD_11,
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GPIO66_LCD_LDD_12,
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GPIO67_LCD_LDD_13,
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GPIO68_LCD_LDD_14,
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GPIO69_LCD_LDD_15,
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GPIO70_LCD_LDD_16,
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GPIO71_LCD_LDD_17,
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GPIO72_LCD_FCLK,
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GPIO73_LCD_LCLK,
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GPIO74_LCD_PCLK,
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GPIO75_LCD_BIAS,
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GPIO76_LCD_VSYNC,
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GPIO127_LCD_CS_N,
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GPIO20_PWM3_OUT, /* backlight */
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/* BTUART */
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GPIO111_UART2_RTS,
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GPIO112_UART2_RXD | MFP_LPM_EDGE_FALL,
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GPIO113_UART2_TXD,
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GPIO114_UART2_CTS | MFP_LPM_EDGE_BOTH,
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/* STUART */
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GPIO109_UART3_TXD,
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GPIO110_UART3_RXD | MFP_LPM_EDGE_FALL,
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/* AC97 */
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GPIO23_AC97_nACRESET,
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GPIO24_AC97_SYSCLK,
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GPIO29_AC97_BITCLK,
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GPIO25_AC97_SDATA_IN_0,
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GPIO27_AC97_SDATA_OUT,
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GPIO28_AC97_SYNC,
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GPIO17_GPIO, /* SDATA_IN_1 but unused - configure to GPIO */
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/* SSP3 */
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GPIO91_SSP3_SCLK,
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GPIO92_SSP3_FRM,
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GPIO93_SSP3_TXD,
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GPIO94_SSP3_RXD,
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/* WM9713 IRQ */
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GPIO26_GPIO,
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/* Keypad */
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GPIO107_KP_DKIN_0 | MFP_LPM_EDGE_BOTH,
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GPIO108_KP_DKIN_1 | MFP_LPM_EDGE_BOTH,
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GPIO115_KP_MKIN_0 | MFP_LPM_EDGE_BOTH,
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GPIO116_KP_MKIN_1 | MFP_LPM_EDGE_BOTH,
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GPIO117_KP_MKIN_2 | MFP_LPM_EDGE_BOTH,
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GPIO118_KP_MKIN_3 | MFP_LPM_EDGE_BOTH,
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GPIO119_KP_MKIN_4 | MFP_LPM_EDGE_BOTH,
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GPIO120_KP_MKIN_5 | MFP_LPM_EDGE_BOTH,
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GPIO2_2_KP_MKIN_6 | MFP_LPM_EDGE_BOTH,
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GPIO3_2_KP_MKIN_7 | MFP_LPM_EDGE_BOTH,
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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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GPIO4_2_KP_MKOUT_5,
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GPIO5_2_KP_MKOUT_6,
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GPIO6_2_KP_MKOUT_7,
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/* MMC1 */
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GPIO3_MMC1_DAT0,
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GPIO4_MMC1_DAT1 | MFP_LPM_EDGE_BOTH,
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GPIO5_MMC1_DAT2,
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GPIO6_MMC1_DAT3,
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GPIO7_MMC1_CLK,
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GPIO8_MMC1_CMD, /* CMD0 for slot 0 */
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GPIO15_GPIO, /* CMD1 default as GPIO for slot 0 */
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/* MMC2 */
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GPIO9_MMC2_DAT0,
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GPIO10_MMC2_DAT1 | MFP_LPM_EDGE_BOTH,
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GPIO11_MMC2_DAT2,
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GPIO12_MMC2_DAT3,
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GPIO13_MMC2_CLK,
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GPIO14_MMC2_CMD,
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/* USB Host */
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GPIO0_2_USBH_PEN,
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GPIO1_2_USBH_PWR,
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/* Standard I2C */
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GPIO21_I2C_SCL,
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GPIO22_I2C_SDA,
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/* GPIO */
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GPIO18_GPIO, /* GPIO Expander #0 INT_N */
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GPIO19_GPIO, /* GPIO Expander #1 INT_N */
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};
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static mfp_cfg_t pxa300_mfp_cfg[] __initdata = {
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/* FFUART */
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GPIO30_UART1_RXD | MFP_LPM_EDGE_FALL,
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GPIO31_UART1_TXD,
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GPIO32_UART1_CTS,
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GPIO37_UART1_RTS,
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GPIO33_UART1_DCD,
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GPIO34_UART1_DSR | MFP_LPM_EDGE_FALL,
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GPIO35_UART1_RI,
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GPIO36_UART1_DTR,
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/* Ethernet */
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GPIO2_nCS3,
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GPIO99_GPIO,
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};
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static mfp_cfg_t pxa310_mfp_cfg[] __initdata = {
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/* FFUART */
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GPIO99_UART1_RXD | MFP_LPM_EDGE_FALL,
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GPIO100_UART1_TXD,
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GPIO101_UART1_CTS,
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GPIO106_UART1_RTS,
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/* Ethernet */
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GPIO2_nCS3,
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GPIO102_GPIO,
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/* MMC3 */
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GPIO7_2_MMC3_DAT0,
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GPIO8_2_MMC3_DAT1 | MFP_LPM_EDGE_BOTH,
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GPIO9_2_MMC3_DAT2,
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GPIO10_2_MMC3_DAT3,
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GPIO103_MMC3_CLK,
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GPIO105_MMC3_CMD,
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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_GPIO71, /* LCD_LDD_17 - ORIENT */
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MFP_PIN_GPIO70, /* LCD_LDD_16 - LCDID[5] */
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MFP_PIN_GPIO75, /* LCD_BIAS - LCDID[4] */
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MFP_PIN_GPIO73, /* LCD_LCLK - LCDID[3] */
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MFP_PIN_GPIO72, /* LCD_FCLK - LCDID[2] */
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MFP_PIN_GPIO127,/* LCD_CS_N - LCDID[1] */
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MFP_PIN_GPIO76, /* LCD_VSYNC - LCDID[0] */
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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[NUM_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
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* them as GPIO Input, DS01X, Pull Neither, Edge Clear
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*/
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for (i = 0; i < NUM_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], 0x8440);
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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_request(gpio, "LCD_ID_PINS");
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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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gpio_free(gpio);
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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 < NUM_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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#if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
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static struct pca953x_platform_data gpio_exp[] = {
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[0] = {
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.gpio_base = 128,
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},
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[1] = {
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.gpio_base = 144,
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},
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};
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static struct i2c_board_info zylonite_i2c_board_info[] = {
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{
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.type = "pca9539",
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.addr = 0x74,
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.platform_data = &gpio_exp[0],
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.irq = IRQ_GPIO(18),
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}, {
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.type = "pca9539",
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.addr = 0x75,
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.platform_data = &gpio_exp[1],
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.irq = IRQ_GPIO(19),
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},
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};
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static void __init zylonite_init_i2c(void)
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{
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pxa_set_i2c_info(NULL);
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i2c_register_board_info(0, ARRAY_AND_SIZE(zylonite_i2c_board_info));
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}
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#else
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static inline void zylonite_init_i2c(void) {}
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#endif
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void __init zylonite_pxa300_init(void)
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{
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if (cpu_is_pxa300() || cpu_is_pxa310()) {
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/* initialize MFP */
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pxa3xx_mfp_config(ARRAY_AND_SIZE(common_mfp_cfg));
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/* detect LCD panel */
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zylonite_detect_lcd_panel();
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/* MMC card detect & write protect for controller 0 */
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zylonite_mmc_slot[0].gpio_cd = EXT_GPIO(0);
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zylonite_mmc_slot[0].gpio_wp = EXT_GPIO(2);
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/* WM9713 IRQ */
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wm9713_irq = mfp_to_gpio(MFP_PIN_GPIO26);
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zylonite_init_i2c();
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}
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if (cpu_is_pxa300()) {
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pxa3xx_mfp_config(ARRAY_AND_SIZE(pxa300_mfp_cfg));
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gpio_eth_irq = mfp_to_gpio(MFP_PIN_GPIO99);
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}
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if (cpu_is_pxa310()) {
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pxa3xx_mfp_config(ARRAY_AND_SIZE(pxa310_mfp_cfg));
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gpio_eth_irq = mfp_to_gpio(MFP_PIN_GPIO102);
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/* MMC card detect & write protect for controller 2 */
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zylonite_mmc_slot[2].gpio_cd = EXT_GPIO(30);
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zylonite_mmc_slot[2].gpio_wp = EXT_GPIO(31);
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}
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/* GPIOs for Debug LEDs */
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gpio_debug_led1 = EXT_GPIO(25);
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gpio_debug_led2 = EXT_GPIO(26);
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}
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