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/i2c/pxa-i2c.h>
  21#include <linux/i2c/pca953x.h>
  22#include <linux/gpio.h>
  23
  24#include <mach/pxa300.h>
  25#include <mach/zylonite.h>
  26
  27#include "generic.h"
  28
  29/* PXA300/PXA310 common configurations */
  30static 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 | MFP_PULL_HIGH,    /* GPIO Expander #0 INT_N */
 133        GPIO19_GPIO | MFP_PULL_HIGH,    /* GPIO Expander #1 INT_N */
 134};
 135
 136static 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
 152static 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
 174static 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
 184static 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_request(gpio, "LCD_ID_PINS");
 201                gpio_direction_input(gpio);
 202
 203                if (gpio_get_value(gpio))
 204                        id = id | 0x1;
 205                gpio_free(gpio);
 206        }
 207
 208        /* lcd id, flush out bit 1 */
 209        lcd_id = id & 0x3d;
 210
 211        /* lcd orientation, portrait or landscape */
 212        lcd_orientation = (id >> 6) & 0x1;
 213
 214        /* restore the original MFP settings */
 215        for (i = 0; i < NUM_LCD_DETECT_PINS; i++)
 216                pxa3xx_mfp_write(lcd_detect_pins[i], mfpr_save[i]);
 217}
 218
 219#if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
 220static struct pca953x_platform_data gpio_exp[] = {
 221        [0] = {
 222                .gpio_base      = 128,
 223        },
 224        [1] = {
 225                .gpio_base      = 144,
 226        },
 227};
 228
 229static struct i2c_board_info zylonite_i2c_board_info[] = {
 230        {
 231                .type           = "pca9539",
 232                .addr           = 0x74,
 233                .platform_data  = &gpio_exp[0],
 234                .irq            = PXA_GPIO_TO_IRQ(18),
 235        }, {
 236                .type           = "pca9539",
 237                .addr           = 0x75,
 238                .platform_data  = &gpio_exp[1],
 239                .irq            = PXA_GPIO_TO_IRQ(19),
 240        },
 241};
 242
 243static void __init zylonite_init_i2c(void)
 244{
 245        pxa_set_i2c_info(NULL);
 246        i2c_register_board_info(0, ARRAY_AND_SIZE(zylonite_i2c_board_info));
 247}
 248#else
 249static inline void zylonite_init_i2c(void) {}
 250#endif
 251
 252void __init zylonite_pxa300_init(void)
 253{
 254        if (cpu_is_pxa300() || cpu_is_pxa310()) {
 255                /* initialize MFP */
 256                pxa3xx_mfp_config(ARRAY_AND_SIZE(common_mfp_cfg));
 257
 258                /* detect LCD panel */
 259                zylonite_detect_lcd_panel();
 260
 261                /* WM9713 IRQ */
 262                wm9713_irq = mfp_to_gpio(MFP_PIN_GPIO26);
 263
 264                zylonite_init_i2c();
 265        }
 266
 267        if (cpu_is_pxa300()) {
 268                pxa3xx_mfp_config(ARRAY_AND_SIZE(pxa300_mfp_cfg));
 269                gpio_eth_irq = mfp_to_gpio(MFP_PIN_GPIO99);
 270        }
 271
 272        if (cpu_is_pxa310()) {
 273                pxa3xx_mfp_config(ARRAY_AND_SIZE(pxa310_mfp_cfg));
 274                gpio_eth_irq = mfp_to_gpio(MFP_PIN_GPIO102);
 275        }
 276
 277        /* GPIOs for Debug LEDs */
 278        gpio_debug_led1 = EXT_GPIO(25);
 279        gpio_debug_led2 = EXT_GPIO(26);
 280}
 281