arch/arm/mach-pxa/zylonite_pxa300.c

   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 */
  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
  54         /* BTUART */
  55         GPIO111_UART2_RTS,
  56         GPIO112_UART2_RXD | MFP_LPM_EDGE_FALL,
  57         GPIO113_UART2_TXD,
  58         GPIO114_UART2_CTS | MFP_LPM_EDGE_BOTH,
  59
  60         /* STUART */
  61         GPIO109_UART3_TXD,
  62         GPIO110_UART3_RXD | MFP_LPM_EDGE_FALL,
  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 | MFP_LPM_EDGE_BOTH,
  74         GPIO108_KP_DKIN_1 | MFP_LPM_EDGE_BOTH,
  75         GPIO115_KP_MKIN_0 | MFP_LPM_EDGE_BOTH,
  76         GPIO116_KP_MKIN_1 | MFP_LPM_EDGE_BOTH,
  77         GPIO117_KP_MKIN_2 | MFP_LPM_EDGE_BOTH,
  78         GPIO118_KP_MKIN_3 | MFP_LPM_EDGE_BOTH,
  79         GPIO119_KP_MKIN_4 | MFP_LPM_EDGE_BOTH,
  80         GPIO120_KP_MKIN_5 | MFP_LPM_EDGE_BOTH,
  81         GPIO2_2_KP_MKIN_6 | MFP_LPM_EDGE_BOTH,
  82         GPIO3_2_KP_MKIN_7 | MFP_LPM_EDGE_BOTH,
  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         /* MMC1 */
  93         GPIO3_MMC1_DAT0,
  94         GPIO4_MMC1_DAT1 | MFP_LPM_EDGE_BOTH,
  95         GPIO5_MMC1_DAT2,
  96         GPIO6_MMC1_DAT3,
  97         GPIO7_MMC1_CLK,
  98         GPIO8_MMC1_CMD, /* CMD0 for slot 0 */
  99         GPIO15_GPIO,    /* CMD1 default as GPIO for slot 0 */
 100
 101         /* MMC2 */
 102         GPIO9_MMC2_DAT0,
 103         GPIO10_MMC2_DAT1 | MFP_LPM_EDGE_BOTH,
 104         GPIO11_MMC2_DAT2,
 105         GPIO12_MMC2_DAT3,
 106         GPIO13_MMC2_CLK,
 107         GPIO14_MMC2_CMD,
 108 };
 109
 110 static mfp_cfg_t pxa300_mfp_cfg[] __initdata = {
 111         /* FFUART */
 112         GPIO30_UART1_RXD | MFP_LPM_EDGE_FALL,
 113         GPIO31_UART1_TXD,
 114         GPIO32_UART1_CTS,
 115         GPIO37_UART1_RTS,
 116         GPIO33_UART1_DCD,
 117         GPIO34_UART1_DSR | MFP_LPM_EDGE_FALL,
 118         GPIO35_UART1_RI,
 119         GPIO36_UART1_DTR,
 120
 121         /* Ethernet */
 122         GPIO2_nCS3,
 123         GPIO99_GPIO,
 124 };
 125
 126 static mfp_cfg_t pxa310_mfp_cfg[] __initdata = {
 127         /* FFUART */
 128         GPIO99_UART1_RXD | MFP_LPM_EDGE_FALL,
 129         GPIO100_UART1_TXD,
 130         GPIO101_UART1_CTS,
 131         GPIO106_UART1_RTS,
 132
 133         /* Ethernet */
 134         GPIO2_nCS3,
 135         GPIO102_GPIO,
 136
 137         /* MMC3 */
 138         GPIO7_2_MMC3_DAT0,
 139         GPIO8_2_MMC3_DAT1 | MFP_LPM_EDGE_BOTH,
 140         GPIO9_2_MMC3_DAT2,
 141         GPIO10_2_MMC3_DAT3,
 142         GPIO103_MMC3_CLK,
 143         GPIO105_MMC3_CMD,
 144 };
 145
 146 #define NUM_LCD_DETECT_PINS     7
 147
 148 static int lcd_detect_pins[] __initdata = {
 149         MFP_PIN_GPIO71, /* LCD_LDD_17 - ORIENT */
 150         MFP_PIN_GPIO70, /* LCD_LDD_16 - LCDID[5] */
 151         MFP_PIN_GPIO75, /* LCD_BIAS   - LCDID[4] */
 152         MFP_PIN_GPIO73, /* LCD_LCLK   - LCDID[3] */
 153         MFP_PIN_GPIO72, /* LCD_FCLK   - LCDID[2] */
 154         MFP_PIN_GPIO127,/* LCD_CS_N   - LCDID[1] */
 155         MFP_PIN_GPIO76, /* LCD_VSYNC  - LCDID[0] */
 156 };
 157
 158 static void __init zylonite_detect_lcd_panel(void)
 159 {
 160         unsigned long mfpr_save[NUM_LCD_DETECT_PINS];
 161         int i, gpio, id = 0;
 162
 163         /* save the original MFP settings of these pins and configure
 164          * them as GPIO Input, DS01X, Pull Neither, Edge Clear
 165          */
 166         for (i = 0; i < NUM_LCD_DETECT_PINS; i++) {
 167                 mfpr_save[i] = pxa3xx_mfp_read(lcd_detect_pins[i]);
 168                 pxa3xx_mfp_write(lcd_detect_pins[i], 0x8440);
 169         }
 170
 171         for (i = 0; i < NUM_LCD_DETECT_PINS; i++) {
 172                 id = id << 1;
 173                 gpio = mfp_to_gpio(lcd_detect_pins[i]);
 174                 gpio_direction_input(gpio);
 175
 176                 if (gpio_get_value(gpio))
 177                         id = id | 0x1;
 178         }
 179
 180         /* lcd id, flush out bit 1 */
 181         lcd_id = id & 0x3d;
 182
 183         /* lcd orientation, portrait or landscape */
 184         lcd_orientation = (id >> 6) & 0x1;
 185
 186         /* restore the original MFP settings */
 187         for (i = 0; i < NUM_LCD_DETECT_PINS; i++)
 188                 pxa3xx_mfp_write(lcd_detect_pins[i], mfpr_save[i]);
 189 }
 190
 191 void __init zylonite_pxa300_init(void)
 192 {
 193         if (cpu_is_pxa300() || cpu_is_pxa310()) {
 194                 /* initialize MFP */
 195                 pxa3xx_mfp_config(ARRAY_AND_SIZE(common_mfp_cfg));
 196
 197                 /* detect LCD panel */
 198                 zylonite_detect_lcd_panel();
 199
 200                 /* GPIO pin assignment */
 201                 gpio_backlight = mfp_to_gpio(MFP_PIN_GPIO20);
 202
 203                 /* MMC card detect & write protect for controller 0 */
 204                 zylonite_mmc_slot[0].gpio_cd  = EXT_GPIO(0);
 205                 zylonite_mmc_slot[0].gpio_wp  = EXT_GPIO(2);
 206         }
 207
 208         if (cpu_is_pxa300()) {
 209                 pxa3xx_mfp_config(ARRAY_AND_SIZE(pxa300_mfp_cfg));
 210                 gpio_eth_irq = mfp_to_gpio(MFP_PIN_GPIO99);
 211         }
 212
 213         if (cpu_is_pxa310()) {
 214                 pxa3xx_mfp_config(ARRAY_AND_SIZE(pxa310_mfp_cfg));
 215                 gpio_eth_irq = mfp_to_gpio(MFP_PIN_GPIO102);
 216
 217                 /* MMC card detect & write protect for controller 2 */
 218                 zylonite_mmc_slot[2].gpio_cd = EXT_GPIO(30);
 219                 zylonite_mmc_slot[2].gpio_wp = EXT_GPIO(31);
 220         }
 221 }