LXR linux/arch/arm/mach-pxa/zylonite

   1/*
   2 * linux/arch/arm/mach-pxa/zylonite_pxa300.c
   3 *
   4 * PXA300/PXA310 specific support code for the
   5 * PXA3xx Development Platform (aka Zylonite)
   6 *
   7 * Copyright (C) 2007 Marvell Internation Ltd.
   8 * 2007-08-21: eric miao <eric.miao@marvell.com>
   9 *             initial version
  10 *
  11 * This program is free software; you can redistribute it and/or modify
  12 * it under the terms of the GNU General Public License version 2 as
  13 * published by the Free Software Foundation.
  14 */
  15
  16#include <linux/module.h>
  17#include <linux/kernel.h>
  18#include <linux/init.h>
  19
  20#include <asm/gpio.h>
  21#include <asm/arch/mfp-pxa300.h>
  22#include <asm/arch/zylonite.h>
  23
  24#define ARRAY_AND_SIZE(x)       (x), ARRAY_SIZE(x)
  25
  26/* PXA300/PXA310 common configurations */
  27static mfp_cfg_t common_mfp_cfg[] __initdata = {
  28        /* LCD */
  29        GPIO54_LCD_LDD_0,
  30        GPIO55_LCD_LDD_1,
  31        GPIO56_LCD_LDD_2,
  32        GPIO57_LCD_LDD_3,
  33        GPIO58_LCD_LDD_4,
  34        GPIO59_LCD_LDD_5,
  35        GPIO60_LCD_LDD_6,
  36        GPIO61_LCD_LDD_7,
  37        GPIO62_LCD_LDD_8,
  38        GPIO63_LCD_LDD_9,
  39        GPIO64_LCD_LDD_10,
  40        GPIO65_LCD_LDD_11,
  41        GPIO66_LCD_LDD_12,
  42        GPIO67_LCD_LDD_13,
  43        GPIO68_LCD_LDD_14,
  44        GPIO69_LCD_LDD_15,
  45        GPIO70_LCD_LDD_16,
  46        GPIO71_LCD_LDD_17,
  47        GPIO72_LCD_FCLK,
  48        GPIO73_LCD_LCLK,
  49        GPIO74_LCD_PCLK,
  50        GPIO75_LCD_BIAS,
  51        GPIO76_LCD_VSYNC,
  52        GPIO127_LCD_CS_N,
  53
  54        /* BTUART */
  55        GPIO111_UART2_RTS,
  56        GPIO112_UART2_RXD,
  57        GPIO113_UART2_TXD,
  58        GPIO114_UART2_CTS,
  59
  60        /* STUART */
  61        GPIO109_UART3_TXD,
  62        GPIO110_UART3_RXD,
  63
  64        /* AC97 */
  65        GPIO23_AC97_nACRESET,
  66        GPIO24_AC97_SYSCLK,
  67        GPIO29_AC97_BITCLK,
  68        GPIO25_AC97_SDATA_IN_0,
  69        GPIO27_AC97_SDATA_OUT,
  70        GPIO28_AC97_SYNC,
  71
  72        /* Keypad */
  73        GPIO107_KP_DKIN_0,
  74        GPIO108_KP_DKIN_1,
  75        GPIO115_KP_MKIN_0,
  76        GPIO116_KP_MKIN_1,
  77        GPIO117_KP_MKIN_2,
  78        GPIO118_KP_MKIN_3,
  79        GPIO119_KP_MKIN_4,
  80        GPIO120_KP_MKIN_5,
  81        GPIO2_2_KP_MKIN_6,
  82        GPIO3_2_KP_MKIN_7,
  83        GPIO121_KP_MKOUT_0,
  84        GPIO122_KP_MKOUT_1,
  85        GPIO123_KP_MKOUT_2,
  86        GPIO124_KP_MKOUT_3,
  87        GPIO125_KP_MKOUT_4,
  88        GPIO4_2_KP_MKOUT_5,
  89        GPIO5_2_KP_MKOUT_6,
  90        GPIO6_2_KP_MKOUT_7,
  91};
  92
  93static mfp_cfg_t pxa300_mfp_cfg[] __initdata = {
  94        /* FFUART */
  95        GPIO30_UART1_RXD,
  96        GPIO31_UART1_TXD,
  97        GPIO32_UART1_CTS,
  98        GPIO37_UART1_RTS,
  99        GPIO33_UART1_DCD,
 100        GPIO34_UART1_DSR,
 101        GPIO35_UART1_RI,
 102        GPIO36_UART1_DTR,
 103
 104        /* Ethernet */
 105        GPIO2_nCS3,
 106        GPIO99_GPIO,
 107};
 108
 109static mfp_cfg_t pxa310_mfp_cfg[] __initdata = {
 110        /* FFUART */
 111        GPIO99_UART1_RXD,
 112        GPIO100_UART1_TXD,
 113        GPIO101_UART1_CTS,
 114        GPIO106_UART1_RTS,
 115
 116        /* Ethernet */
 117        GPIO2_nCS3,
 118        GPIO102_GPIO,
 119};
 120
 121#define NUM_LCD_DETECT_PINS     7
 122
 123static int lcd_detect_pins[] __initdata = {
 124        MFP_PIN_GPIO71, /* LCD_LDD_17 - ORIENT */
 125        MFP_PIN_GPIO70, /* LCD_LDD_16 - LCDID[5] */
 126        MFP_PIN_GPIO75, /* LCD_BIAS   - LCDID[4] */
 127        MFP_PIN_GPIO73, /* LCD_LCLK   - LCDID[3] */
 128        MFP_PIN_GPIO72, /* LCD_FCLK   - LCDID[2] */
 129        MFP_PIN_GPIO127,/* LCD_CS_N   - LCDID[1] */
 130        MFP_PIN_GPIO76, /* LCD_VSYNC  - LCDID[0] */
 131};
 132
 133static void __init zylonite_detect_lcd_panel(void)
 134{
 135        unsigned long mfpr_save[NUM_LCD_DETECT_PINS];
 136        int i, gpio, id = 0;
 137
 138        /* save the original MFP settings of these pins and configure
 139         * them as GPIO Input, DS01X, Pull Neither, Edge Clear
 140         */
 141        for (i = 0; i < NUM_LCD_DETECT_PINS; i++) {
 142                mfpr_save[i] = pxa3xx_mfp_read(lcd_detect_pins[i]);
 143                pxa3xx_mfp_write(lcd_detect_pins[i], 0x8440);
 144        }
 145
 146        for (i = 0; i < NUM_LCD_DETECT_PINS; i++) {
 147                id = id << 1;
 148                gpio = mfp_to_gpio(lcd_detect_pins[i]);
 149                gpio_direction_input(gpio);
 150
 151                if (gpio_get_value(gpio))
 152                        id = id | 0x1;
 153        }
 154
 155        /* lcd id, flush out bit 1 */
 156        lcd_id = id & 0x3d;
 157
 158        /* lcd orientation, portrait or landscape */
 159        lcd_orientation = (id >> 6) & 0x1;
 160
 161        /* restore the original MFP settings */
 162        for (i = 0; i < NUM_LCD_DETECT_PINS; i++)
 163                pxa3xx_mfp_write(lcd_detect_pins[i], mfpr_save[i]);
 164}
 165
 166void __init zylonite_pxa300_init(void)
 167{
 168        if (cpu_is_pxa300() || cpu_is_pxa310()) {
 169                /* initialize MFP */
 170                pxa3xx_mfp_config(ARRAY_AND_SIZE(common_mfp_cfg));
 171
 172                /* detect LCD panel */
 173                zylonite_detect_lcd_panel();
 174
 175                /* GPIO pin assignment */
 176                gpio_backlight = mfp_to_gpio(MFP_PIN_GPIO20);
 177        }
 178
 179        if (cpu_is_pxa300()) {
 180                pxa3xx_mfp_config(ARRAY_AND_SIZE(pxa300_mfp_cfg));
 181                gpio_eth_irq = mfp_to_gpio(MFP_PIN_GPIO99);
 182        }
 183
 184        if (cpu_is_pxa310()) {
 185                pxa3xx_mfp_config(ARRAY_AND_SIZE(pxa310_mfp_cfg));
 186                gpio_eth_irq = mfp_to_gpio(MFP_PIN_GPIO102);
 187        }
 188}
 189