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