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mxm8x10.c

/*
 * linux/arch/arm/mach-pxa/mxm8x10.c
 *
 * Support for the Embedian MXM-8x10 Computer on Module
 *
 * Copyright (C) 2006 Marvell International Ltd.
 * Copyright (C) 2009 Embedian Inc.
 * Copyright (C) 2009 TMT Services & Supplies (Pty) Ltd.
 *
 * 2007-09-04: eric miao <eric.y.miao@gmail.com>
 *             rewrite to align with latest kernel
 *
 * 2010-01-09: Edwin Peer <epeer@tmtservices.co.za>
 *           Hennie van der Merwe <hvdmerwe@tmtservices.co.za>
 *             rework for upstream merge
 *
 * 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/serial_8250.h>
#include <linux/dm9000.h>
#include <linux/gpio.h>

#include <plat/i2c.h>
#include <plat/pxa3xx_nand.h>

#include <mach/pxafb.h>
#include <mach/mmc.h>
#include <mach/ohci.h>
#include <mach/pxa320.h>

#include <mach/mxm8x10.h>

#include "devices.h"
#include "generic.h"

/* GPIO pin definition

External device stuff   - Leave unconfigured for now...
---------------------
GPIO0   -   DREQ    (External DMA Request)
GPIO3   -   nGCS2   (External Chip Select) Where is nGCS0; nGCS1; nGCS4; nGCS5 ?
GPIO4   -   nGCS3
GPIO15  -   EXT_GPIO1
GPIO16  -   EXT_GPIO2
GPIO17  -   EXT_GPIO3
GPIO24  -   EXT_GPIO4
GPIO25  -   EXT_GPIO5
GPIO26  -   EXT_GPIO6
GPIO27  -   EXT_GPIO7
GPIO28  -   EXT_GPIO8
GPIO29  -   EXT_GPIO9
GPIO30  -   EXT_GPIO10
GPIO31  -   EXT_GPIO11
GPIO57  -   EXT_GPIO12
GPIO74  -   EXT_IRQ1
GPIO75  -   EXT_IRQ2
GPIO76  -   EXT_IRQ3
GPIO77  -   EXT_IRQ4
GPIO78  -   EXT_IRQ5
GPIO79  -   EXT_IRQ6
GPIO80  -   EXT_IRQ7
GPIO81  -   EXT_IRQ8
GPIO87  -   VCCIO_PWREN (External Device PWREN)

Dallas 1-Wire   - Leave unconfigured for now...
-------------
GPIO0_2 -   DS - 1Wire

Ethernet
--------
GPIO1   -   DM9000 PWR
GPIO9   -   DM9K_nIRQ
GPIO36  -   DM9K_RESET

Keypad  - Leave unconfigured by for now...
------
GPIO1_2 -   KP_DKIN0
GPIO5_2 -   KP_MKOUT7
GPIO82  -   KP_DKIN1
GPIO85  -   KP_DKIN2
GPIO86  -   KP_DKIN3
GPIO113 -   KP_MKIN0
GPIO114 -   KP_MKIN1
GPIO115 -   KP_MKIN2
GPIO116 -   KP_MKIN3
GPIO117 -   KP_MKIN4
GPIO118 -   KP_MKIN5
GPIO119 -   KP_MKIN6
GPIO120 -   KP_MKIN7
GPIO121 -   KP_MKOUT0
GPIO122 -   KP_MKOUT1
GPIO122 -   KP_MKOUT2
GPIO123 -   KP_MKOUT3
GPIO124 -   KP_MKOUT4
GPIO125 -   KP_MKOUT5
GPIO127 -   KP_MKOUT6

Data Bus    - Leave unconfigured for now...
--------
GPIO2   -   nWait (Data Bus)

USB Device
----------
GPIO4_2 -   USBD_PULLUP
GPIO10  -   UTM_CLK (USB Device UTM Clk)
GPIO49  -   USB 2.0 Device UTM_DATA0
GPIO50  -   USB 2.0 Device UTM_DATA1
GPIO51  -   USB 2.0 Device UTM_DATA2
GPIO52  -   USB 2.0 Device UTM_DATA3
GPIO53  -   USB 2.0 Device UTM_DATA4
GPIO54  -   USB 2.0 Device UTM_DATA5
GPIO55  -   USB 2.0 Device UTM_DATA6
GPIO56  -   USB 2.0 Device UTM_DATA7
GPIO58  -   UTM_RXVALID (USB 2.0 Device)
GPIO59  -   UTM_RXACTIVE (USB 2.0 Device)
GPIO60  -   UTM_RXERROR
GPIO61  -   UTM_OPMODE0
GPIO62  -   UTM_OPMODE1
GPIO71  -   USBD_INT    (USB Device?)
GPIO73  -   UTM_TXREADY (USB 2.0 Device)
GPIO83  -   UTM_TXVALID (USB 2.0 Device)
GPIO98  -   UTM_RESET   (USB 2.0 device)
GPIO99  -   UTM_XCVR_SELECT
GPIO100 -   UTM_TERM_SELECT
GPIO101 -   UTM_SUSPENDM_X
GPIO102 -   UTM_LINESTATE0
GPIO103 -   UTM_LINESTATE1

Card-Bus Interface  - Leave unconfigured for now...
------------------
GPIO5   -   nPIOR (I/O space output enable)
GPIO6   -   nPIOW (I/O space write enable)
GPIO7   -   nIOS16 (Input from I/O space telling size of data bus)
GPIO8   -   nPWAIT (Input for inserting wait states)

LCD
---
GPIO6_2     -   LDD0
GPIO7_2     -   LDD1
GPIO8_2     -   LDD2
GPIO9_2     -   LDD3
GPIO11_2    -   LDD5
GPIO12_2    -   LDD6
GPIO13_2    -   LDD7
GPIO14_2    -   VSYNC
GPIO15_2    -   HSYNC
GPIO16_2    -   VCLK
GPIO17_2    -   HCLK
GPIO18_2    -   VDEN
GPIO63      -   LDD8    (CPU LCD)
GPIO64      -   LDD9    (CPU LCD)
GPIO65      -   LDD10   (CPU LCD)
GPIO66      -   LDD11   (CPU LCD)
GPIO67      -   LDD12   (CPU LCD)
GPIO68      -   LDD13   (CPU LCD)
GPIO69      -   LDD14   (CPU LCD)
GPIO70      -   LDD15   (CPU LCD)
GPIO88      -   VCCLCD_PWREN (LCD Panel PWREN)
GPIO97      -   BACKLIGHT_EN
GPIO104     -   LCD_PWREN

PWM   - Leave unconfigured for now...
---
GPIO11  -   PWM0
GPIO12  -   PWM1
GPIO13  -   PWM2
GPIO14  -   PWM3

SD-CARD
-------
GPIO18  -   SDDATA0
GPIO19  -   SDDATA1
GPIO20  -   SDDATA2
GPIO21  -   SDDATA3
GPIO22  -   SDCLK
GPIO23  -   SDCMD
GPIO72  -   SD_WP
GPIO84  -   SD_nIRQ_CD  (SD-Card)

I2C
---
GPIO32  -   I2CSCL
GPIO33  -   I2CSDA

AC97
----
GPIO35  -   AC97_SDATA_IN
GPIO37  -   AC97_SDATA_OUT
GPIO38  -   AC97_SYNC
GPIO39  -   AC97_BITCLK
GPIO40  -   AC97_nRESET

UART1
-----
GPIO41  -   UART_RXD1
GPIO42  -   UART_TXD1
GPIO43  -   UART_CTS1
GPIO44  -   UART_DCD1
GPIO45  -   UART_DSR1
GPIO46  -   UART_nRI1
GPIO47  -   UART_DTR1
GPIO48  -   UART_RTS1

UART2
-----
GPIO109 -   RTS2
GPIO110 -   RXD2
GPIO111 -   TXD2
GPIO112 -   nCTS2

UART3
-----
GPIO105 -   nCTS3
GPIO106 -   nRTS3
GPIO107 -   TXD3
GPIO108 -   RXD3

SSP3    - Leave unconfigured for now...
----
GPIO89  -   SSP3_CLK
GPIO90  -   SSP3_SFRM
GPIO91  -   SSP3_TXD
GPIO92  -   SSP3_RXD

SSP4
GPIO93  -   SSP4_CLK
GPIO94  -   SSP4_SFRM
GPIO95  -   SSP4_TXD
GPIO96  -   SSP4_RXD
*/

static mfp_cfg_t mfp_cfg[] __initdata = {
      /* USB */
      GPIO10_UTM_CLK,
      GPIO49_U2D_PHYDATA_0,
      GPIO50_U2D_PHYDATA_1,
      GPIO51_U2D_PHYDATA_2,
      GPIO52_U2D_PHYDATA_3,
      GPIO53_U2D_PHYDATA_4,
      GPIO54_U2D_PHYDATA_5,
      GPIO55_U2D_PHYDATA_6,
      GPIO56_U2D_PHYDATA_7,
      GPIO58_UTM_RXVALID,
      GPIO59_UTM_RXACTIVE,
      GPIO60_U2D_RXERROR,
      GPIO61_U2D_OPMODE0,
      GPIO62_U2D_OPMODE1,
      GPIO71_GPIO, /* USBD_INT */
      GPIO73_UTM_TXREADY,
      GPIO83_U2D_TXVALID,
      GPIO98_U2D_RESET,
      GPIO99_U2D_XCVR_SEL,
      GPIO100_U2D_TERM_SEL,
      GPIO101_U2D_SUSPEND,
      GPIO102_UTM_LINESTATE_0,
      GPIO103_UTM_LINESTATE_1,
      GPIO4_2_GPIO | MFP_PULL_HIGH, /* UTM_PULLUP */

      /* DM9000 */
      GPIO1_GPIO,
      GPIO9_GPIO,
      GPIO36_GPIO,

      /* AC97 */
      GPIO35_AC97_SDATA_IN_0,
      GPIO37_AC97_SDATA_OUT,
      GPIO38_AC97_SYNC,
      GPIO39_AC97_BITCLK,
      GPIO40_AC97_nACRESET,

      /* UARTS */
      GPIO41_UART1_RXD,
      GPIO42_UART1_TXD,
      GPIO43_UART1_CTS,
      GPIO44_UART1_DCD,
      GPIO45_UART1_DSR,
      GPIO46_UART1_RI,
      GPIO47_UART1_DTR,
      GPIO48_UART1_RTS,

      GPIO109_UART2_RTS,
      GPIO110_UART2_RXD,
      GPIO111_UART2_TXD,
      GPIO112_UART2_CTS,

      GPIO105_UART3_CTS,
      GPIO106_UART3_RTS,
      GPIO107_UART3_TXD,
      GPIO108_UART3_RXD,

      GPIO78_GPIO,
      GPIO79_GPIO,
      GPIO80_GPIO,
      GPIO81_GPIO,

      /* I2C */
      GPIO32_I2C_SCL,
      GPIO33_I2C_SDA,

      /* MMC */
      GPIO18_MMC1_DAT0,
      GPIO19_MMC1_DAT1,
      GPIO20_MMC1_DAT2,
      GPIO21_MMC1_DAT3,
      GPIO22_MMC1_CLK,
      GPIO23_MMC1_CMD,
      GPIO72_GPIO | MFP_PULL_HIGH, /* Card Detect */
      GPIO84_GPIO | MFP_PULL_LOW, /* Write Protect */

      /* IRQ */
      GPIO74_GPIO | MFP_LPM_EDGE_RISE, /* EXT_IRQ1 */
      GPIO75_GPIO | MFP_LPM_EDGE_RISE, /* EXT_IRQ2 */
      GPIO76_GPIO | MFP_LPM_EDGE_RISE, /* EXT_IRQ3 */
      GPIO77_GPIO | MFP_LPM_EDGE_RISE, /* EXT_IRQ4 */
      GPIO78_GPIO | MFP_LPM_EDGE_RISE, /* EXT_IRQ5 */
      GPIO79_GPIO | MFP_LPM_EDGE_RISE, /* EXT_IRQ6 */
      GPIO80_GPIO | MFP_LPM_EDGE_RISE, /* EXT_IRQ7 */
      GPIO81_GPIO | MFP_LPM_EDGE_RISE  /* EXT_IRQ8 */
};

/* MMC/MCI Support */
#if defined(CONFIG_MMC)
static struct pxamci_platform_data mxm_8x10_mci_platform_data = {
      .ocr_mask = MMC_VDD_32_33 | MMC_VDD_33_34,
      .detect_delay_ms = 10,
      .gpio_card_detect = MXM_8X10_SD_nCD,
      .gpio_card_ro = MXM_8X10_SD_WP,
      .gpio_power = -1
};

void __init mxm_8x10_mmc_init(void)
{
      pxa_set_mci_info(&mxm_8x10_mci_platform_data);
}
#endif

/* USB Open Host Controller Interface */
static struct pxaohci_platform_data mxm_8x10_ohci_platform_data = {
      .port_mode = PMM_NPS_MODE,
      .flags = ENABLE_PORT_ALL
};

void __init mxm_8x10_usb_host_init(void)
{
      pxa_set_ohci_info(&mxm_8x10_ohci_platform_data);
}

/* AC97 Sound Support */
static struct platform_device mxm_8x10_ac97_device = {
      .name = "pxa2xx-ac97"
};

void __init mxm_8x10_ac97_init(void)
{
      platform_device_register(&mxm_8x10_ac97_device);
}

/* NAND flash Support */
#if defined(CONFIG_MTD_NAND_PXA3xx) || defined(CONFIG_MTD_NAND_PXA3xx_MODULE)
#define NAND_BLOCK_SIZE SZ_128K
#define NB(x)           (NAND_BLOCK_SIZE * (x))
static struct mtd_partition mxm_8x10_nand_partitions[] = {
      [0] = {
             .name = "boot",
             .size = NB(0x002),
             .offset = NB(0x000),
             .mask_flags = MTD_WRITEABLE
      },
      [1] = {
             .name = "kernel",
             .size = NB(0x010),
             .offset = NB(0x002),
             .mask_flags = MTD_WRITEABLE
      },
      [2] = {
             .name = "root",
             .size = NB(0x36c),
             .offset = NB(0x012)
      },
      [3] = {
             .name = "bbt",
             .size = NB(0x082),
             .offset = NB(0x37e),
             .mask_flags = MTD_WRITEABLE
      }
};

static struct pxa3xx_nand_platform_data mxm_8x10_nand_info = {
      .enable_arbiter = 1,
      .keep_config = 1,
      .parts = mxm_8x10_nand_partitions,
      .nr_parts = ARRAY_SIZE(mxm_8x10_nand_partitions)
};

static void __init mxm_8x10_nand_init(void)
{
      pxa3xx_set_nand_info(&mxm_8x10_nand_info);
}
#else
static inline void mxm_8x10_nand_init(void) {}
#endif /* CONFIG_MTD_NAND_PXA3xx || CONFIG_MTD_NAND_PXA3xx_MODULE */

/* Ethernet support: Davicom DM9000 */
static struct resource dm9k_resources[] = {
      [0] = {
             .start = MXM_8X10_ETH_PHYS + 0x300,
             .end = MXM_8X10_ETH_PHYS + 0x300,
             .flags = IORESOURCE_MEM
      },
      [1] = {
             .start = MXM_8X10_ETH_PHYS + 0x308,
             .end = MXM_8X10_ETH_PHYS + 0x308,
             .flags = IORESOURCE_MEM
      },
      [2] = {
             .start = gpio_to_irq(mfp_to_gpio(MFP_PIN_GPIO9)),
             .end = gpio_to_irq(mfp_to_gpio(MFP_PIN_GPIO9)),
             .flags = IORESOURCE_IRQ | IORESOURCE_IRQ_HIGHEDGE
      }
};

static struct dm9000_plat_data dm9k_plat_data = {
      .flags = DM9000_PLATF_16BITONLY
};

static struct platform_device dm9k_device = {
      .name = "dm9000",
      .id = 0,
      .num_resources = ARRAY_SIZE(dm9k_resources),
      .resource = dm9k_resources,
      .dev = {
            .platform_data = &dm9k_plat_data
      }
};

static void __init mxm_8x10_ethernet_init(void)
{
      platform_device_register(&dm9k_device);
}

/* PXA UARTs */
static void __init mxm_8x10_uarts_init(void)
{
      pxa_set_ffuart_info(NULL);
      pxa_set_btuart_info(NULL);
      pxa_set_stuart_info(NULL);
}

/* I2C and Real Time Clock */
static struct i2c_board_info __initdata mxm_8x10_i2c_devices[] = {
      {
            I2C_BOARD_INFO("ds1337", 0x68)
      }
};

static void __init mxm_8x10_i2c_init(void)
{
      i2c_register_board_info(0, mxm_8x10_i2c_devices,
                        ARRAY_SIZE(mxm_8x10_i2c_devices));
      pxa_set_i2c_info(NULL);
}

void __init mxm_8x10_barebones_init(void)
{
      pxa3xx_mfp_config(ARRAY_AND_SIZE(mfp_cfg));

      mxm_8x10_uarts_init();
      mxm_8x10_nand_init();
      mxm_8x10_i2c_init();
      mxm_8x10_ethernet_init();
}

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