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linux-next/arch/arm/mach-pxa/zylonite_pxa320.c
Haojian Zhuang f91e4906e2 [ARM] pxa/zylonite: simplify reduntant gpio settings on mmc slot
PXA mmc host driver supports card detect, read only and power gpio pin
setting already. Zylonite platform driver needn't implement this any more.

Signed-off-by: Haojian Zhuang <haojian.zhuang@marvell.com>
Signed-off-by: Eric Miao <eric.y.miao@gmail.com>
2009-12-29 14:11:34 +08:00

216 lines
5.0 KiB
C

/*
* 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 <linux/gpio.h>
#include <mach/pxa320.h>
#include <mach/zylonite.h>
#include "generic.h"
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,
GPIO14_PWM3_OUT, /* backlight */
/* FFUART */
GPIO41_UART1_RXD | MFP_LPM_EDGE_FALL,
GPIO42_UART1_TXD,
GPIO43_UART1_CTS,
GPIO44_UART1_DCD,
GPIO45_UART1_DSR | MFP_LPM_EDGE_FALL,
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,
GPIO36_GPIO, /* SDATA_IN_1 but unused - configure to GPIO */
/* SSP3 */
GPIO89_SSP3_SCLK,
GPIO90_SSP3_FRM,
GPIO91_SSP3_TXD,
GPIO92_SSP3_RXD,
/* WM9713 IRQ */
GPIO15_GPIO,
/* I2C */
GPIO32_I2C_SCL,
GPIO33_I2C_SDA,
/* Keypad */
GPIO105_KP_DKIN_0 | MFP_LPM_EDGE_BOTH,
GPIO106_KP_DKIN_1 | MFP_LPM_EDGE_BOTH,
GPIO113_KP_MKIN_0 | MFP_LPM_EDGE_BOTH,
GPIO114_KP_MKIN_1 | MFP_LPM_EDGE_BOTH,
GPIO115_KP_MKIN_2 | MFP_LPM_EDGE_BOTH,
GPIO116_KP_MKIN_3 | MFP_LPM_EDGE_BOTH,
GPIO117_KP_MKIN_4 | MFP_LPM_EDGE_BOTH,
GPIO118_KP_MKIN_5 | MFP_LPM_EDGE_BOTH,
GPIO119_KP_MKIN_6 | MFP_LPM_EDGE_BOTH,
GPIO120_KP_MKIN_7 | MFP_LPM_EDGE_BOTH,
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,
/* MMC1 */
GPIO18_MMC1_DAT0,
GPIO19_MMC1_DAT1 | MFP_LPM_EDGE_BOTH,
GPIO20_MMC1_DAT2,
GPIO21_MMC1_DAT3,
GPIO22_MMC1_CLK,
GPIO23_MMC1_CMD,/* CMD0 for slot 0 */
GPIO31_GPIO, /* CMD1 default as GPIO for slot 0 */
/* MMC2 */
GPIO24_MMC2_DAT0,
GPIO25_MMC2_DAT1 | MFP_LPM_EDGE_BOTH,
GPIO26_MMC2_DAT2,
GPIO27_MMC2_DAT3,
GPIO28_MMC2_CLK,
GPIO29_MMC2_CMD,
/* USB Host */
GPIO2_2_USBH_PEN,
GPIO3_2_USBH_PWR,
/* Debug LEDs */
GPIO1_2_GPIO | MFP_LPM_DRIVE_HIGH,
GPIO4_2_GPIO | MFP_LPM_DRIVE_HIGH,
};
#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_request(gpio, "LCD_ID_PINS");
gpio_direction_input(gpio);
if (gpio_get_value(gpio))
id = id | 0x1;
gpio_free(gpio);
}
/* 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_eth_irq = mfp_to_gpio(MFP_PIN_GPIO9);
gpio_debug_led1 = mfp_to_gpio(MFP_PIN_GPIO1_2);
gpio_debug_led2 = mfp_to_gpio(MFP_PIN_GPIO4_2);
/* WM9713 IRQ */
wm9713_irq = mfp_to_gpio(MFP_PIN_GPIO15);
}
}