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zylonite_pxa300.c

/*
 * linux/arch/arm/mach-pxa/zylonite_pxa300.c
 *
 * PXA300/PXA310 specific support code for the
 * PXA3xx Development Platform (aka Zylonite)
 *
 * Copyright (C) 2007 Marvell Internation Ltd.
 * 2007-08-21: eric miao <eric.miao@marvell.com>
 *             initial version
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2 as
 * published by the Free Software Foundation.
 */

#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/i2c.h>
#include <linux/i2c/pca953x.h>

#include <asm/gpio.h>
#include <mach/mfp-pxa300.h>
#include <mach/i2c.h>
#include <mach/zylonite.h>

#include "generic.h"

/* PXA300/PXA310 common configurations */
static mfp_cfg_t common_mfp_cfg[] __initdata = {
      /* LCD */
      GPIO54_LCD_LDD_0,
      GPIO55_LCD_LDD_1,
      GPIO56_LCD_LDD_2,
      GPIO57_LCD_LDD_3,
      GPIO58_LCD_LDD_4,
      GPIO59_LCD_LDD_5,
      GPIO60_LCD_LDD_6,
      GPIO61_LCD_LDD_7,
      GPIO62_LCD_LDD_8,
      GPIO63_LCD_LDD_9,
      GPIO64_LCD_LDD_10,
      GPIO65_LCD_LDD_11,
      GPIO66_LCD_LDD_12,
      GPIO67_LCD_LDD_13,
      GPIO68_LCD_LDD_14,
      GPIO69_LCD_LDD_15,
      GPIO70_LCD_LDD_16,
      GPIO71_LCD_LDD_17,
      GPIO72_LCD_FCLK,
      GPIO73_LCD_LCLK,
      GPIO74_LCD_PCLK,
      GPIO75_LCD_BIAS,
      GPIO76_LCD_VSYNC,
      GPIO127_LCD_CS_N,
      GPIO20_PWM3_OUT,  /* backlight */

      /* BTUART */
      GPIO111_UART2_RTS,
      GPIO112_UART2_RXD | MFP_LPM_EDGE_FALL,
      GPIO113_UART2_TXD,
      GPIO114_UART2_CTS | MFP_LPM_EDGE_BOTH,

      /* STUART */
      GPIO109_UART3_TXD,
      GPIO110_UART3_RXD | MFP_LPM_EDGE_FALL,

      /* AC97 */
      GPIO23_AC97_nACRESET,
      GPIO24_AC97_SYSCLK,
      GPIO29_AC97_BITCLK,
      GPIO25_AC97_SDATA_IN_0,
      GPIO27_AC97_SDATA_OUT,
      GPIO28_AC97_SYNC,

      /* SSP3 */
      GPIO91_SSP3_SCLK,
      GPIO92_SSP3_FRM,
      GPIO93_SSP3_TXD,
      GPIO94_SSP3_RXD,

      /* WM9713 IRQ */
      GPIO26_GPIO,

      /* Keypad */
      GPIO107_KP_DKIN_0 | MFP_LPM_EDGE_BOTH,
      GPIO108_KP_DKIN_1 | MFP_LPM_EDGE_BOTH,
      GPIO115_KP_MKIN_0 | MFP_LPM_EDGE_BOTH,
      GPIO116_KP_MKIN_1 | MFP_LPM_EDGE_BOTH,
      GPIO117_KP_MKIN_2 | MFP_LPM_EDGE_BOTH,
      GPIO118_KP_MKIN_3 | MFP_LPM_EDGE_BOTH,
      GPIO119_KP_MKIN_4 | MFP_LPM_EDGE_BOTH,
      GPIO120_KP_MKIN_5 | MFP_LPM_EDGE_BOTH,
      GPIO2_2_KP_MKIN_6 | MFP_LPM_EDGE_BOTH,
      GPIO3_2_KP_MKIN_7 | MFP_LPM_EDGE_BOTH,
      GPIO121_KP_MKOUT_0,
      GPIO122_KP_MKOUT_1,
      GPIO123_KP_MKOUT_2,
      GPIO124_KP_MKOUT_3,
      GPIO125_KP_MKOUT_4,
      GPIO4_2_KP_MKOUT_5,
      GPIO5_2_KP_MKOUT_6,
      GPIO6_2_KP_MKOUT_7,

      /* MMC1 */
      GPIO3_MMC1_DAT0,
      GPIO4_MMC1_DAT1 | MFP_LPM_EDGE_BOTH,
      GPIO5_MMC1_DAT2,
      GPIO6_MMC1_DAT3,
      GPIO7_MMC1_CLK,
      GPIO8_MMC1_CMD,   /* CMD0 for slot 0 */
      GPIO15_GPIO,      /* CMD1 default as GPIO for slot 0 */

      /* MMC2 */
      GPIO9_MMC2_DAT0,
      GPIO10_MMC2_DAT1 | MFP_LPM_EDGE_BOTH,
      GPIO11_MMC2_DAT2,
      GPIO12_MMC2_DAT3,
      GPIO13_MMC2_CLK,
      GPIO14_MMC2_CMD,

      /* USB Host */
      GPIO0_2_USBH_PEN,
      GPIO1_2_USBH_PWR,

      /* Standard I2C */
      GPIO21_I2C_SCL,
      GPIO22_I2C_SDA,
};

static mfp_cfg_t pxa300_mfp_cfg[] __initdata = {
      /* FFUART */
      GPIO30_UART1_RXD | MFP_LPM_EDGE_FALL,
      GPIO31_UART1_TXD,
      GPIO32_UART1_CTS,
      GPIO37_UART1_RTS,
      GPIO33_UART1_DCD,
      GPIO34_UART1_DSR | MFP_LPM_EDGE_FALL,
      GPIO35_UART1_RI,
      GPIO36_UART1_DTR,

      /* Ethernet */
      GPIO2_nCS3,
      GPIO99_GPIO,
};

static mfp_cfg_t pxa310_mfp_cfg[] __initdata = {
      /* FFUART */
      GPIO99_UART1_RXD | MFP_LPM_EDGE_FALL,
      GPIO100_UART1_TXD,
      GPIO101_UART1_CTS,
      GPIO106_UART1_RTS,

      /* Ethernet */
      GPIO2_nCS3,
      GPIO102_GPIO,

      /* MMC3 */
      GPIO7_2_MMC3_DAT0,
      GPIO8_2_MMC3_DAT1 | MFP_LPM_EDGE_BOTH,
      GPIO9_2_MMC3_DAT2,
      GPIO10_2_MMC3_DAT3,
      GPIO103_MMC3_CLK,
      GPIO105_MMC3_CMD,
};

#define NUM_LCD_DETECT_PINS   7

static int lcd_detect_pins[] __initdata = {
      MFP_PIN_GPIO71,   /* LCD_LDD_17 - ORIENT */
      MFP_PIN_GPIO70, /* LCD_LDD_16 - LCDID[5] */
      MFP_PIN_GPIO75, /* LCD_BIAS   - LCDID[4] */
      MFP_PIN_GPIO73, /* LCD_LCLK   - LCDID[3] */
      MFP_PIN_GPIO72, /* LCD_FCLK   - LCDID[2] */
      MFP_PIN_GPIO127,/* LCD_CS_N   - LCDID[1] */
      MFP_PIN_GPIO76, /* LCD_VSYNC  - LCDID[0] */
};

static void __init zylonite_detect_lcd_panel(void)
{
      unsigned long mfpr_save[NUM_LCD_DETECT_PINS];
      int i, gpio, id = 0;

      /* save the original MFP settings of these pins and configure
       * them as GPIO Input, DS01X, Pull Neither, Edge Clear
       */
      for (i = 0; i < NUM_LCD_DETECT_PINS; i++) {
            mfpr_save[i] = pxa3xx_mfp_read(lcd_detect_pins[i]);
            pxa3xx_mfp_write(lcd_detect_pins[i], 0x8440);
      }

      for (i = 0; i < NUM_LCD_DETECT_PINS; i++) {
            id = id << 1;
            gpio = mfp_to_gpio(lcd_detect_pins[i]);
            gpio_direction_input(gpio);

            if (gpio_get_value(gpio))
                  id = id | 0x1;
      }

      /* lcd id, flush out bit 1 */
      lcd_id = id & 0x3d;

      /* lcd orientation, portrait or landscape */
      lcd_orientation = (id >> 6) & 0x1;

      /* restore the original MFP settings */
      for (i = 0; i < NUM_LCD_DETECT_PINS; i++)
            pxa3xx_mfp_write(lcd_detect_pins[i], mfpr_save[i]);
}

#if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
static struct pca953x_platform_data gpio_exp[] = {
      [0] = {
            .gpio_base  = 128,
      },
      [1] = {
            .gpio_base  = 144,
      },
};

static struct i2c_board_info zylonite_i2c_board_info[] = {
      {
            .type       = "pca9539",
            .addr       = 0x74,
            .platform_data    = &gpio_exp[0],
            .irq        = IRQ_GPIO(18),
      }, {
            .type       = "pca9539",
            .addr       = 0x75,
            .platform_data    = &gpio_exp[1],
            .irq        = IRQ_GPIO(19),
      },
};

static void __init zylonite_init_i2c(void)
{
      pxa_set_i2c_info(NULL);
      i2c_register_board_info(0, ARRAY_AND_SIZE(zylonite_i2c_board_info));
}
#else
static inline void zylonite_init_i2c(void) {}
#endif

void __init zylonite_pxa300_init(void)
{
      if (cpu_is_pxa300() || cpu_is_pxa310()) {
            /* initialize MFP */
            pxa3xx_mfp_config(ARRAY_AND_SIZE(common_mfp_cfg));

            /* detect LCD panel */
            zylonite_detect_lcd_panel();

            /* MMC card detect & write protect for controller 0 */
            zylonite_mmc_slot[0].gpio_cd  = EXT_GPIO(0);
            zylonite_mmc_slot[0].gpio_wp  = EXT_GPIO(2);

            /* WM9713 IRQ */
            wm9713_irq = mfp_to_gpio(MFP_PIN_GPIO26);

            zylonite_init_i2c();
      }

      if (cpu_is_pxa300()) {
            pxa3xx_mfp_config(ARRAY_AND_SIZE(pxa300_mfp_cfg));
            gpio_eth_irq = mfp_to_gpio(MFP_PIN_GPIO99);
      }

      if (cpu_is_pxa310()) {
            pxa3xx_mfp_config(ARRAY_AND_SIZE(pxa310_mfp_cfg));
            gpio_eth_irq = mfp_to_gpio(MFP_PIN_GPIO102);

            /* MMC card detect & write protect for controller 2 */
            zylonite_mmc_slot[2].gpio_cd = EXT_GPIO(30);
            zylonite_mmc_slot[2].gpio_wp = EXT_GPIO(31);
      }

      /* GPIOs for Debug LEDs */
      gpio_debug_led1 = EXT_GPIO(25);
      gpio_debug_led2 = EXT_GPIO(26);
}

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