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   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 #include "generic.h"
  25
  26 /* PXA300/PXA310 common configurations */
  27 static 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         GPIO20_PWM3_OUT,        /* backlight */
  54
  55         /* BTUART */
  56         GPIO111_UART2_RTS,
  57         GPIO112_UART2_RXD | MFP_LPM_EDGE_FALL,
  58         GPIO113_UART2_TXD,
  59         GPIO114_UART2_CTS | MFP_LPM_EDGE_BOTH,
  60
  61         /* STUART */
  62         GPIO109_UART3_TXD,
  63         GPIO110_UART3_RXD | MFP_LPM_EDGE_FALL,
  64
  65         /* AC97 */
  66         GPIO23_AC97_nACRESET,
  67         GPIO24_AC97_SYSCLK,
  68         GPIO29_AC97_BITCLK,
  69         GPIO25_AC97_SDATA_IN_0,
  70         GPIO27_AC97_SDATA_OUT,
  71         GPIO28_AC97_SYNC,
  72
  73         /* WM9713 IRQ */
  74         GPIO26_GPIO,
  75
  76         /* Keypad */
  77         GPIO107_KP_DKIN_0 | MFP_LPM_EDGE_BOTH,
  78         GPIO108_KP_DKIN_1 | MFP_LPM_EDGE_BOTH,
  79         GPIO115_KP_MKIN_0 | MFP_LPM_EDGE_BOTH,
  80         GPIO116_KP_MKIN_1 | MFP_LPM_EDGE_BOTH,
  81         GPIO117_KP_MKIN_2 | MFP_LPM_EDGE_BOTH,
  82         GPIO118_KP_MKIN_3 | MFP_LPM_EDGE_BOTH,
  83         GPIO119_KP_MKIN_4 | MFP_LPM_EDGE_BOTH,
  84         GPIO120_KP_MKIN_5 | MFP_LPM_EDGE_BOTH,
  85         GPIO2_2_KP_MKIN_6 | MFP_LPM_EDGE_BOTH,
  86         GPIO3_2_KP_MKIN_7 | MFP_LPM_EDGE_BOTH,
  87         GPIO121_KP_MKOUT_0,
  88         GPIO122_KP_MKOUT_1,
  89         GPIO123_KP_MKOUT_2,
  90         GPIO124_KP_MKOUT_3,
  91         GPIO125_KP_MKOUT_4,
  92         GPIO4_2_KP_MKOUT_5,
  93         GPIO5_2_KP_MKOUT_6,
  94         GPIO6_2_KP_MKOUT_7,
  95
  96         /* MMC1 */
  97         GPIO3_MMC1_DAT0,
  98         GPIO4_MMC1_DAT1 | MFP_LPM_EDGE_BOTH,
  99         GPIO5_MMC1_DAT2,
 100         GPIO6_MMC1_DAT3,
 101         GPIO7_MMC1_CLK,
 102         GPIO8_MMC1_CMD, /* CMD0 for slot 0 */
 103         GPIO15_GPIO,    /* CMD1 default as GPIO for slot 0 */
 104
 105         /* MMC2 */
 106         GPIO9_MMC2_DAT0,
 107         GPIO10_MMC2_DAT1 | MFP_LPM_EDGE_BOTH,
 108         GPIO11_MMC2_DAT2,
 109         GPIO12_MMC2_DAT3,
 110         GPIO13_MMC2_CLK,
 111         GPIO14_MMC2_CMD,
 112 };
 113
 114 static mfp_cfg_t pxa300_mfp_cfg[] __initdata = {
 115         /* FFUART */
 116         GPIO30_UART1_RXD | MFP_LPM_EDGE_FALL,
 117         GPIO31_UART1_TXD,
 118         GPIO32_UART1_CTS,
 119         GPIO37_UART1_RTS,
 120         GPIO33_UART1_DCD,
 121         GPIO34_UART1_DSR | MFP_LPM_EDGE_FALL,
 122         GPIO35_UART1_RI,
 123         GPIO36_UART1_DTR,
 124
 125         /* Ethernet */
 126         GPIO2_nCS3,
 127         GPIO99_GPIO,
 128 };
 129
 130 static mfp_cfg_t pxa310_mfp_cfg[] __initdata = {
 131         /* FFUART */
 132         GPIO99_UART1_RXD | MFP_LPM_EDGE_FALL,
 133         GPIO100_UART1_TXD,
 134         GPIO101_UART1_CTS,
 135         GPIO106_UART1_RTS,
 136
 137         /* Ethernet */
 138         GPIO2_nCS3,
 139         GPIO102_GPIO,
 140
 141         /* MMC3 */
 142         GPIO7_2_MMC3_DAT0,
 143         GPIO8_2_MMC3_DAT1 | MFP_LPM_EDGE_BOTH,
 144         GPIO9_2_MMC3_DAT2,
 145         GPIO10_2_MMC3_DAT3,
 146         GPIO103_MMC3_CLK,
 147         GPIO105_MMC3_CMD,
 148 };
 149
 150 #define NUM_LCD_DETECT_PINS     7
 151
 152 static int lcd_detect_pins[] __initdata = {
 153         MFP_PIN_GPIO71, /* LCD_LDD_17 - ORIENT */
 154         MFP_PIN_GPIO70, /* LCD_LDD_16 - LCDID[5] */
 155         MFP_PIN_GPIO75, /* LCD_BIAS   - LCDID[4] */
 156         MFP_PIN_GPIO73, /* LCD_LCLK   - LCDID[3] */
 157         MFP_PIN_GPIO72, /* LCD_FCLK   - LCDID[2] */
 158         MFP_PIN_GPIO127,/* LCD_CS_N   - LCDID[1] */
 159         MFP_PIN_GPIO76, /* LCD_VSYNC  - LCDID[0] */
 160 };
 161
 162 static void __init zylonite_detect_lcd_panel(void)
 163 {
 164         unsigned long mfpr_save[NUM_LCD_DETECT_PINS];
 165         int i, gpio, id = 0;
 166
 167         /* save the original MFP settings of these pins and configure
 168          * them as GPIO Input, DS01X, Pull Neither, Edge Clear
 169          */
 170         for (i = 0; i < NUM_LCD_DETECT_PINS; i++) {
 171                 mfpr_save[i] = pxa3xx_mfp_read(lcd_detect_pins[i]);
 172                 pxa3xx_mfp_write(lcd_detect_pins[i], 0x8440);
 173         }
 174
 175         for (i = 0; i < NUM_LCD_DETECT_PINS; i++) {
 176                 id = id << 1;
 177                 gpio = mfp_to_gpio(lcd_detect_pins[i]);
 178                 gpio_direction_input(gpio);
 179
 180                 if (gpio_get_value(gpio))
 181                         id = id | 0x1;
 182         }
 183
 184         /* lcd id, flush out bit 1 */
 185         lcd_id = id & 0x3d;
 186
 187         /* lcd orientation, portrait or landscape */
 188         lcd_orientation = (id >> 6) & 0x1;
 189
 190         /* restore the original MFP settings */
 191         for (i = 0; i < NUM_LCD_DETECT_PINS; i++)
 192                 pxa3xx_mfp_write(lcd_detect_pins[i], mfpr_save[i]);
 193 }
 194
 195 void __init zylonite_pxa300_init(void)
 196 {
 197         if (cpu_is_pxa300() || cpu_is_pxa310()) {
 198                 /* initialize MFP */
 199                 pxa3xx_mfp_config(ARRAY_AND_SIZE(common_mfp_cfg));
 200
 201                 /* detect LCD panel */
 202                 zylonite_detect_lcd_panel();
 203
 204                 /* MMC card detect & write protect for controller 0 */
 205                 zylonite_mmc_slot[0].gpio_cd  = EXT_GPIO(0);
 206                 zylonite_mmc_slot[0].gpio_wp  = EXT_GPIO(2);
 207
 208                 /* WM9713 IRQ */
 209                 wm9713_irq = mfp_to_gpio(MFP_PIN_GPIO26);
 210         }
 211
 212         if (cpu_is_pxa300()) {
 213                 pxa3xx_mfp_config(ARRAY_AND_SIZE(pxa300_mfp_cfg));
 214                 gpio_eth_irq = mfp_to_gpio(MFP_PIN_GPIO99);
 215         }
 216
 217         if (cpu_is_pxa310()) {
 218                 pxa3xx_mfp_config(ARRAY_AND_SIZE(pxa310_mfp_cfg));
 219                 gpio_eth_irq = mfp_to_gpio(MFP_PIN_GPIO102);
 220
 221                 /* MMC card detect & write protect for controller 2 */
 222                 zylonite_mmc_slot[2].gpio_cd = EXT_GPIO(30);
 223                 zylonite_mmc_slot[2].gpio_wp = EXT_GPIO(31);
 224         }
 225 }