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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 #include <linux/i2c.h>
  20 #include <linux/i2c/pca953x.h>
  21 #include <linux/gpio.h>
  22
  23 #include <mach/pxa300.h>
  24 #include <plat/i2c.h>
  25 #include <mach/zylonite.h>
  26
  27 #include "generic.h"
  28
  29 /* PXA300/PXA310 common configurations */
  30 static mfp_cfg_t common_mfp_cfg[] __initdata = {
  31         /* LCD */
  32         GPIO54_LCD_LDD_0,
  33         GPIO55_LCD_LDD_1,
  34         GPIO56_LCD_LDD_2,
  35         GPIO57_LCD_LDD_3,
  36         GPIO58_LCD_LDD_4,
  37         GPIO59_LCD_LDD_5,
  38         GPIO60_LCD_LDD_6,
  39         GPIO61_LCD_LDD_7,
  40         GPIO62_LCD_LDD_8,
  41         GPIO63_LCD_LDD_9,
  42         GPIO64_LCD_LDD_10,
  43         GPIO65_LCD_LDD_11,
  44         GPIO66_LCD_LDD_12,
  45         GPIO67_LCD_LDD_13,
  46         GPIO68_LCD_LDD_14,
  47         GPIO69_LCD_LDD_15,
  48         GPIO70_LCD_LDD_16,
  49         GPIO71_LCD_LDD_17,
  50         GPIO72_LCD_FCLK,
  51         GPIO73_LCD_LCLK,
  52         GPIO74_LCD_PCLK,
  53         GPIO75_LCD_BIAS,
  54         GPIO76_LCD_VSYNC,
  55         GPIO127_LCD_CS_N,
  56         GPIO20_PWM3_OUT,        /* backlight */
  57
  58         /* BTUART */
  59         GPIO111_UART2_RTS,
  60         GPIO112_UART2_RXD | MFP_LPM_EDGE_FALL,
  61         GPIO113_UART2_TXD,
  62         GPIO114_UART2_CTS | MFP_LPM_EDGE_BOTH,
  63
  64         /* STUART */
  65         GPIO109_UART3_TXD,
  66         GPIO110_UART3_RXD | MFP_LPM_EDGE_FALL,
  67
  68         /* AC97 */
  69         GPIO23_AC97_nACRESET,
  70         GPIO24_AC97_SYSCLK,
  71         GPIO29_AC97_BITCLK,
  72         GPIO25_AC97_SDATA_IN_0,
  73         GPIO27_AC97_SDATA_OUT,
  74         GPIO28_AC97_SYNC,
  75         GPIO17_GPIO,    /* SDATA_IN_1 but unused - configure to GPIO */
  76
  77         /* SSP3 */
  78         GPIO91_SSP3_SCLK,
  79         GPIO92_SSP3_FRM,
  80         GPIO93_SSP3_TXD,
  81         GPIO94_SSP3_RXD,
  82
  83         /* WM9713 IRQ */
  84         GPIO26_GPIO,
  85
  86         /* Keypad */
  87         GPIO107_KP_DKIN_0 | MFP_LPM_EDGE_BOTH,
  88         GPIO108_KP_DKIN_1 | MFP_LPM_EDGE_BOTH,
  89         GPIO115_KP_MKIN_0 | MFP_LPM_EDGE_BOTH,
  90         GPIO116_KP_MKIN_1 | MFP_LPM_EDGE_BOTH,
  91         GPIO117_KP_MKIN_2 | MFP_LPM_EDGE_BOTH,
  92         GPIO118_KP_MKIN_3 | MFP_LPM_EDGE_BOTH,
  93         GPIO119_KP_MKIN_4 | MFP_LPM_EDGE_BOTH,
  94         GPIO120_KP_MKIN_5 | MFP_LPM_EDGE_BOTH,
  95         GPIO2_2_KP_MKIN_6 | MFP_LPM_EDGE_BOTH,
  96         GPIO3_2_KP_MKIN_7 | MFP_LPM_EDGE_BOTH,
  97         GPIO121_KP_MKOUT_0,
  98         GPIO122_KP_MKOUT_1,
  99         GPIO123_KP_MKOUT_2,
 100         GPIO124_KP_MKOUT_3,
 101         GPIO125_KP_MKOUT_4,
 102         GPIO4_2_KP_MKOUT_5,
 103         GPIO5_2_KP_MKOUT_6,
 104         GPIO6_2_KP_MKOUT_7,
 105
 106         /* MMC1 */
 107         GPIO3_MMC1_DAT0,
 108         GPIO4_MMC1_DAT1 | MFP_LPM_EDGE_BOTH,
 109         GPIO5_MMC1_DAT2,
 110         GPIO6_MMC1_DAT3,
 111         GPIO7_MMC1_CLK,
 112         GPIO8_MMC1_CMD, /* CMD0 for slot 0 */
 113         GPIO15_GPIO,    /* CMD1 default as GPIO for slot 0 */
 114
 115         /* MMC2 */
 116         GPIO9_MMC2_DAT0,
 117         GPIO10_MMC2_DAT1 | MFP_LPM_EDGE_BOTH,
 118         GPIO11_MMC2_DAT2,
 119         GPIO12_MMC2_DAT3,
 120         GPIO13_MMC2_CLK,
 121         GPIO14_MMC2_CMD,
 122
 123         /* USB Host */
 124         GPIO0_2_USBH_PEN,
 125         GPIO1_2_USBH_PWR,
 126
 127         /* Standard I2C */
 128         GPIO21_I2C_SCL,
 129         GPIO22_I2C_SDA,
 130
 131         /* GPIO */
 132         GPIO18_GPIO,    /* GPIO Expander #0 INT_N */
 133         GPIO19_GPIO,    /* GPIO Expander #1 INT_N */
 134 };
 135
 136 static mfp_cfg_t pxa300_mfp_cfg[] __initdata = {
 137         /* FFUART */
 138         GPIO30_UART1_RXD | MFP_LPM_EDGE_FALL,
 139         GPIO31_UART1_TXD,
 140         GPIO32_UART1_CTS,
 141         GPIO37_UART1_RTS,
 142         GPIO33_UART1_DCD,
 143         GPIO34_UART1_DSR | MFP_LPM_EDGE_FALL,
 144         GPIO35_UART1_RI,
 145         GPIO36_UART1_DTR,
 146
 147         /* Ethernet */
 148         GPIO2_nCS3,
 149         GPIO99_GPIO,
 150 };
 151
 152 static mfp_cfg_t pxa310_mfp_cfg[] __initdata = {
 153         /* FFUART */
 154         GPIO99_UART1_RXD | MFP_LPM_EDGE_FALL,
 155         GPIO100_UART1_TXD,
 156         GPIO101_UART1_CTS,
 157         GPIO106_UART1_RTS,
 158
 159         /* Ethernet */
 160         GPIO2_nCS3,
 161         GPIO102_GPIO,
 162
 163         /* MMC3 */
 164         GPIO7_2_MMC3_DAT0,
 165         GPIO8_2_MMC3_DAT1 | MFP_LPM_EDGE_BOTH,
 166         GPIO9_2_MMC3_DAT2,
 167         GPIO10_2_MMC3_DAT3,
 168         GPIO103_MMC3_CLK,
 169         GPIO105_MMC3_CMD,
 170 };
 171
 172 #define NUM_LCD_DETECT_PINS     7
 173
 174 static int lcd_detect_pins[] __initdata = {
 175         MFP_PIN_GPIO71, /* LCD_LDD_17 - ORIENT */
 176         MFP_PIN_GPIO70, /* LCD_LDD_16 - LCDID[5] */
 177         MFP_PIN_GPIO75, /* LCD_BIAS   - LCDID[4] */
 178         MFP_PIN_GPIO73, /* LCD_LCLK   - LCDID[3] */
 179         MFP_PIN_GPIO72, /* LCD_FCLK   - LCDID[2] */
 180         MFP_PIN_GPIO127,/* LCD_CS_N   - LCDID[1] */
 181         MFP_PIN_GPIO76, /* LCD_VSYNC  - LCDID[0] */
 182 };
 183
 184 static void __init zylonite_detect_lcd_panel(void)
 185 {
 186         unsigned long mfpr_save[NUM_LCD_DETECT_PINS];
 187         int i, gpio, id = 0;
 188
 189         /* save the original MFP settings of these pins and configure
 190          * them as GPIO Input, DS01X, Pull Neither, Edge Clear
 191          */
 192         for (i = 0; i < NUM_LCD_DETECT_PINS; i++) {
 193                 mfpr_save[i] = pxa3xx_mfp_read(lcd_detect_pins[i]);
 194                 pxa3xx_mfp_write(lcd_detect_pins[i], 0x8440);
 195         }
 196
 197         for (i = 0; i < NUM_LCD_DETECT_PINS; i++) {
 198                 id = id << 1;
 199                 gpio = mfp_to_gpio(lcd_detect_pins[i]);
 200                 gpio_direction_input(gpio);
 201
 202                 if (gpio_get_value(gpio))
 203                         id = id | 0x1;
 204         }
 205
 206         /* lcd id, flush out bit 1 */
 207         lcd_id = id & 0x3d;
 208
 209         /* lcd orientation, portrait or landscape */
 210         lcd_orientation = (id >> 6) & 0x1;
 211
 212         /* restore the original MFP settings */
 213         for (i = 0; i < NUM_LCD_DETECT_PINS; i++)
 214                 pxa3xx_mfp_write(lcd_detect_pins[i], mfpr_save[i]);
 215 }
 216
 217 #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
 218 static struct pca953x_platform_data gpio_exp[] = {
 219         [0] = {
 220                 .gpio_base      = 128,
 221         },
 222         [1] = {
 223                 .gpio_base      = 144,
 224         },
 225 };
 226
 227 static struct i2c_board_info zylonite_i2c_board_info[] = {
 228         {
 229                 .type           = "pca9539",
 230                 .addr           = 0x74,
 231                 .platform_data  = &gpio_exp[0],
 232                 .irq            = IRQ_GPIO(18),
 233         }, {
 234                 .type           = "pca9539",
 235                 .addr           = 0x75,
 236                 .platform_data  = &gpio_exp[1],
 237                 .irq            = IRQ_GPIO(19),
 238         },
 239 };
 240
 241 static void __init zylonite_init_i2c(void)
 242 {
 243         pxa_set_i2c_info(NULL);
 244         i2c_register_board_info(0, ARRAY_AND_SIZE(zylonite_i2c_board_info));
 245 }
 246 #else
 247 static inline void zylonite_init_i2c(void) {}
 248 #endif
 249
 250 void __init zylonite_pxa300_init(void)
 251 {
 252         if (cpu_is_pxa300() || cpu_is_pxa310()) {
 253                 /* initialize MFP */
 254                 pxa3xx_mfp_config(ARRAY_AND_SIZE(common_mfp_cfg));
 255
 256                 /* detect LCD panel */
 257                 zylonite_detect_lcd_panel();
 258
 259                 /* MMC card detect & write protect for controller 0 */
 260                 zylonite_mmc_slot[0].gpio_cd  = EXT_GPIO(0);
 261                 zylonite_mmc_slot[0].gpio_wp  = EXT_GPIO(2);
 262
 263                 /* WM9713 IRQ */
 264                 wm9713_irq = mfp_to_gpio(MFP_PIN_GPIO26);
 265
 266                 zylonite_init_i2c();
 267         }
 268
 269         if (cpu_is_pxa300()) {
 270                 pxa3xx_mfp_config(ARRAY_AND_SIZE(pxa300_mfp_cfg));
 271                 gpio_eth_irq = mfp_to_gpio(MFP_PIN_GPIO99);
 272         }
 273
 274         if (cpu_is_pxa310()) {
 275                 pxa3xx_mfp_config(ARRAY_AND_SIZE(pxa310_mfp_cfg));
 276                 gpio_eth_irq = mfp_to_gpio(MFP_PIN_GPIO102);
 277
 278                 /* MMC card detect & write protect for controller 2 */
 279                 zylonite_mmc_slot[2].gpio_cd = EXT_GPIO(30);
 280                 zylonite_mmc_slot[2].gpio_wp = EXT_GPIO(31);
 281         }
 282
 283         /* GPIOs for Debug LEDs */
 284         gpio_debug_led1 = EXT_GPIO(25);
 285         gpio_debug_led2 = EXT_GPIO(26);
 286 }