board-magicpanelr2.c

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/*
 * linux/arch/sh/boards/magicpanel/setup.c
 *
 *  Copyright (C) 2007  Markus Brunner, Mark Jonas
 *
 *  Magic Panel Release 2 board setup
 *
 * This file is subject to the terms and conditions of the GNU General Public
 * License.  See the file "COPYING" in the main directory of this archive
 * for more details.
 */
#include <linux/init.h>
#include <linux/irq.h>
#include <linux/platform_device.h>
#include <linux/delay.h>
#include <linux/gpio.h>
#include <linux/regulator/fixed.h>
#include <linux/regulator/machine.h>
#include <linux/smsc911x.h>
#include <linux/mtd/mtd.h>
#include <linux/mtd/partitions.h>
#include <linux/mtd/physmap.h>
#include <linux/mtd/map.h>
#include <linux/sh_intc.h>
#include <mach/magicpanelr2.h>
#include <asm/heartbeat.h>
#include <cpu/sh7720.h>

/* Dummy supplies, where voltage doesn't matter */
static struct regulator_consumer_supply dummy_supplies[] = {
    REGULATOR_SUPPLY("vddvario", "smsc911x"),
    REGULATOR_SUPPLY("vdd33a", "smsc911x"),
};

#define LAN9115_READY   (__raw_readl(0xA8000084UL) & 0x00000001UL)

/* Wait until reset finished. Timeout is 100ms. */
static int __init ethernet_reset_finished(void)
{
    int i;

    if (LAN9115_READY)
        return 1;

    for (i = 0; i < 10; ++i) {
        mdelay(10);
        if (LAN9115_READY)
            return 1;
    }

    return 0;
}

static void __init reset_ethernet(void)
{
    /* PMDR: LAN_RESET=on */
    CLRBITS_OUTB(0x10, PORT_PMDR);

    udelay(200);

    /* PMDR: LAN_RESET=off */
    SETBITS_OUTB(0x10, PORT_PMDR);
}

static void __init setup_chip_select(void)
{
    /* CS2: LAN (0x08000000 - 0x0bffffff) */
    /* no idle cycles, normal space, 8 bit data bus */
    __raw_writel(0x36db0400, CS2BCR);
    /* (SW:1.5 WR:3 HW:1.5), ext. wait */
    __raw_writel(0x000003c0, CS2WCR);

    /* CS4: CAN1 (0xb0000000 - 0xb3ffffff) */
    /* no idle cycles, normal space, 8 bit data bus */
    __raw_writel(0x00000200, CS4BCR);
    /* (SW:1.5 WR:3 HW:1.5), ext. wait */
    __raw_writel(0x00100981, CS4WCR);

    /* CS5a: CAN2 (0xb4000000 - 0xb5ffffff) */
    /* no idle cycles, normal space, 8 bit data bus */
    __raw_writel(0x00000200, CS5ABCR);
    /* (SW:1.5 WR:3 HW:1.5), ext. wait */
    __raw_writel(0x00100981, CS5AWCR);

    /* CS5b: CAN3 (0xb6000000 - 0xb7ffffff) */
    /* no idle cycles, normal space, 8 bit data bus */
    __raw_writel(0x00000200, CS5BBCR);
    /* (SW:1.5 WR:3 HW:1.5), ext. wait */
    __raw_writel(0x00100981, CS5BWCR);

    /* CS6a: Rotary (0xb8000000 - 0xb9ffffff) */
    /* no idle cycles, normal space, 8 bit data bus */
    __raw_writel(0x00000200, CS6ABCR);
    /* (SW:1.5 WR:3 HW:1.5), no ext. wait */
    __raw_writel(0x001009C1, CS6AWCR);
}

static void __init setup_port_multiplexing(void)
{
    /* A7 GPO(LED8);     A6 GPO(LED7);     A5 GPO(LED6);      A4 GPO(LED5);
     * A3 GPO(LED4);     A2 GPO(LED3);     A1 GPO(LED2);      A0 GPO(LED1);
     */
    __raw_writew(0x5555, PORT_PACR);    /* 01 01 01 01 01 01 01 01 */

    /* B7 GPO(RST4);   B6 GPO(RST3);  B5 GPO(RST2);    B4 GPO(RST1);
     * B3 GPO(PB3);    B2 GPO(PB2);   B1 GPO(PB1);     B0 GPO(PB0);
     */
    __raw_writew(0x5555, PORT_PBCR);    /* 01 01 01 01 01 01 01 01 */

    /* C7 GPO(PC7);   C6 GPO(PC6);    C5 GPO(PC5);     C4 GPO(PC4);
     * C3 LCD_DATA3;  C2 LCD_DATA2;   C1 LCD_DATA1;    C0 LCD_DATA0;
     */
    __raw_writew(0x5500, PORT_PCCR);    /* 01 01 01 01 00 00 00 00 */

    /* D7 GPO(PD7); D6 GPO(PD6);    D5 GPO(PD5);       D4 GPO(PD4);
     * D3 GPO(PD3); D2 GPO(PD2);    D1 GPO(PD1);       D0 GPO(PD0);
     */
    __raw_writew(0x5555, PORT_PDCR);    /* 01 01 01 01 01 01 01 01 */

    /* E7 (x);    E6 GPI(nu);    E5 GPI(nu);      E4 LCD_M_DISP;
     * E3 LCD_CL1;    E2 LCD_CL2;    E1 LCD_DON;      E0 LCD_FLM;
     */
    __raw_writew(0x3C00, PORT_PECR);    /* 00 11 11 00 00 00 00 00 */

    /* F7 (x);       F6 DA1(VLCD);     F5 DA0(nc);    F4 AN3;
     * F3 AN2(MID_AD);   F2 AN1(EARTH_AD); F1 AN0(TEMP);      F0 GPI+(nc);
     */
    __raw_writew(0x0002, PORT_PFCR);    /* 00 00 00 00 00 00 00 10 */

    /* G7 (x);    G6 IRQ5(TOUCH_BUSY); G5 IRQ4(TOUCH_IRQ); G4 GPI(KEY2);
     * G3 GPI(KEY1);  G2 GPO(LED11);    G1 GPO(LED10);     G0 GPO(LED9);
     */
    __raw_writew(0x03D5, PORT_PGCR);    /* 00 00 00 11 11 01 01 01 */

    /* H7 (x);        H6 /RAS(BRAS);      H5 /CAS(BCAS); H4 CKE(BCKE);
     * H3 GPO(EARTH_OFF); H2 GPO(EARTH_TEST); H1 USB2_PWR;   H0 USB1_PWR;
     */
    __raw_writew(0x0050, PORT_PHCR);    /* 00 00 00 00 01 01 00 00 */

    /* J7 (x);    J6 AUDCK;    J5 ASEBRKAK;     J4 AUDATA3;
     * J3 AUDATA2;    J2 AUDATA1;      J1 AUDATA0;      J0 AUDSYNC;
     */
    __raw_writew(0x0000, PORT_PJCR);    /* 00 00 00 00 00 00 00 00 */

    /* K7 (x);      K6 (x);      K5 (x);       K4 (x);
     * K3 PINT7(/PWR2); K2 PINT6(/PWR1); K1 PINT5(nu); K0 PINT4(FLASH_READY)
     */
    __raw_writew(0x00FF, PORT_PKCR);    /* 00 00 00 00 11 11 11 11 */

    /* L7 TRST;    L6 TMS;       L5 TDO;          L4 TDI;
     * L3 TCK;     L2 (x);       L1 (x);          L0 (x);
     */
    __raw_writew(0x0000, PORT_PLCR);    /* 00 00 00 00 00 00 00 00 */

    /* M7 GPO(CURRENT_SINK);    M6 GPO(PWR_SWITCH);     M5 GPO(LAN_SPEED);
     * M4 GPO(LAN_RESET);       M3 GPO(BUZZER);     M2 GPO(LCD_BL);
     * M1 CS5B(CAN3_CS);        M0 GPI+(nc);
     */
    __raw_writew(0x5552, PORT_PMCR);       /* 01 01 01 01 01 01 00 10 */

    /* CURRENT_SINK=off,    PWR_SWITCH=off, LAN_SPEED=100MBit,
     * LAN_RESET=off,   BUZZER=off, LCD_BL=off
     */
#if CONFIG_SH_MAGIC_PANEL_R2_VERSION == 2
    __raw_writeb(0x30, PORT_PMDR);
#elif CONFIG_SH_MAGIC_PANEL_R2_VERSION == 3
    __raw_writeb(0xF0, PORT_PMDR);
#else
#error Unknown revision of PLATFORM_MP_R2
#endif

    /* P7 (x);         P6 (x);        P5 (x);
     * P4 GPO(nu);         P3 IRQ3(LAN_IRQ);  P2 IRQ2(CAN3_IRQ);
     * P1 IRQ1(CAN2_IRQ);  P0 IRQ0(CAN1_IRQ)
     */
    __raw_writew(0x0100, PORT_PPCR);    /* 00 00 00 01 00 00 00 00 */
    __raw_writeb(0x10, PORT_PPDR);

    /* R7 A25;       R6 A24;         R5 A23;          R4 A22;
     * R3 A21;       R2 A20;         R1 A19;          R0 A0;
     */
    gpio_request(GPIO_FN_A25, NULL);
    gpio_request(GPIO_FN_A24, NULL);
    gpio_request(GPIO_FN_A23, NULL);
    gpio_request(GPIO_FN_A22, NULL);
    gpio_request(GPIO_FN_A21, NULL);
    gpio_request(GPIO_FN_A20, NULL);
    gpio_request(GPIO_FN_A19, NULL);
    gpio_request(GPIO_FN_A0, NULL);

    /* S7 (x);      S6 (x);        S5 (x);       S4 GPO(EEPROM_CS2);
     * S3 GPO(EEPROM_CS1);  S2 SIOF0_TXD;  S1 SIOF0_RXD; S0 SIOF0_SCK;
     */
    __raw_writew(0x0140, PORT_PSCR);    /* 00 00 00 01 01 00 00 00 */

    /* T7 (x);     T6 (x);    T5 (x);     T4 COM1_CTS;
     * T3 COM1_RTS;    T2 COM1_TXD;   T1 COM1_RXD;    T0 GPO(WDOG)
     */
    __raw_writew(0x0001, PORT_PTCR);    /* 00 00 00 00 00 00 00 01 */

    /* U7 (x);       U6 (x);       U5 (x);    U4 GPI+(/AC_FAULT);
     * U3 GPO(TOUCH_CS); U2 TOUCH_TXD; U1 TOUCH_RXD;  U0 TOUCH_SCK;
     */
    __raw_writew(0x0240, PORT_PUCR);    /* 00 00 00 10 01 00 00 00 */

    /* V7 (x);    V6 (x);   V5 (x);       V4 GPO(MID2);
     * V3 GPO(MID1);  V2 CARD_TxD;  V1 CARD_RxD;      V0 GPI+(/BAT_FAULT);
     */
    __raw_writew(0x0142, PORT_PVCR);    /* 00 00 00 01 01 00 00 10 */
}

static void __init mpr2_setup(char **cmdline_p)
{
    /* set Pin Select Register A:
     * /PCC_CD1, /PCC_CD2,  PCC_BVD1, PCC_BVD2,
     * /IOIS16,  IRQ4,  IRQ5,     USB1d_SUSPEND
     */
    __raw_writew(0xAABC, PORT_PSELA);
    /* set Pin Select Register B:
     * /SCIF0_RTS, /SCIF0_CTS, LCD_VCPWC,
     * LCD_VEPWC,  IIC_SDA,    IIC_SCL, Reserved
     */
    __raw_writew(0x3C00, PORT_PSELB);
    /* set Pin Select Register C:
     * SIOF1_SCK, SIOF1_RxD, SCIF1_RxD, SCIF1_TxD, Reserved
     */
    __raw_writew(0x0000, PORT_PSELC);
    /* set Pin Select Register D: Reserved, SIOF1_TxD, Reserved, SIOF1_MCLK,
     * Reserved, SIOF1_SYNC, Reserved, SCIF1_SCK, Reserved
     */
    __raw_writew(0x0000, PORT_PSELD);
    /* set USB TxRx Control: Reserved, DRV, Reserved, USB_TRANS, USB_SEL */
    __raw_writew(0x0101, PORT_UTRCTL);
    /* set USB Clock Control: USSCS, USSTB, Reserved (HighByte always A5) */
    __raw_writew(0xA5C0, PORT_UCLKCR_W);

    setup_chip_select();

    setup_port_multiplexing();

    reset_ethernet();

    printk(KERN_INFO "Magic Panel Release 2 A.%i\n",
                CONFIG_SH_MAGIC_PANEL_R2_VERSION);

    if (ethernet_reset_finished() == 0)
        printk(KERN_WARNING "Ethernet not ready\n");
}

static struct resource smsc911x_resources[] = {
    [0] = {
        .start      = 0xa8000000,
        .end        = 0xabffffff,
        .flags      = IORESOURCE_MEM,
    },
    [1] = {
        .start      = evt2irq(0x660),
        .end        = evt2irq(0x660),
        .flags      = IORESOURCE_IRQ,
    },
};

static struct smsc911x_platform_config smsc911x_config = {
    .phy_interface  = PHY_INTERFACE_MODE_MII,
    .irq_polarity   = SMSC911X_IRQ_POLARITY_ACTIVE_LOW,
    .irq_type   = SMSC911X_IRQ_TYPE_OPEN_DRAIN,
    .flags      = SMSC911X_USE_32BIT,
};

static struct platform_device smsc911x_device = {
    .name       = "smsc911x",
    .id     = -1,
    .num_resources  = ARRAY_SIZE(smsc911x_resources),
    .resource   = smsc911x_resources,
    .dev = {
        .platform_data = &smsc911x_config,
    },
};

static struct resource heartbeat_resources[] = {
    [0] = {
        .start  = PA_LED,
        .end    = PA_LED,
        .flags  = IORESOURCE_MEM,
    },
};

static struct heartbeat_data heartbeat_data = {
    .flags      = HEARTBEAT_INVERTED,
};

static struct platform_device heartbeat_device = {
    .name       = "heartbeat",
    .id     = -1,
    .dev    = {
        .platform_data  = &heartbeat_data,
    },
    .num_resources  = ARRAY_SIZE(heartbeat_resources),
    .resource   = heartbeat_resources,
};

static struct mtd_partition mpr2_partitions[] = {
    /* Reserved for bootloader, read-only */
    {
        .name = "Bootloader",
        .offset = 0x00000000UL,
        .size = MPR2_MTD_BOOTLOADER_SIZE,
        .mask_flags = MTD_WRITEABLE,
    },
    /* Reserved for kernel image */
    {
        .name = "Kernel",
        .offset = MTDPART_OFS_NXTBLK,
        .size = MPR2_MTD_KERNEL_SIZE,
    },
    /* Rest is used for Flash FS */
    {
        .name = "Flash_FS",
        .offset = MTDPART_OFS_NXTBLK,
        .size = MTDPART_SIZ_FULL,
    }
};

static struct physmap_flash_data flash_data = {
    .parts      = mpr2_partitions,
    .nr_parts   = ARRAY_SIZE(mpr2_partitions),
    .width      = 2,
};

static struct resource flash_resource = {
    .start      = 0x00000000,
    .end        = 0x2000000UL,
    .flags      = IORESOURCE_MEM,
};

static struct platform_device flash_device = {
    .name       = "physmap-flash",
    .id     = -1,
    .resource   = &flash_resource,
    .num_resources  = 1,
    .dev        = {
        .platform_data = &flash_data,
    },
};

/*
 * Add all resources to the platform_device
 */

static struct platform_device *mpr2_devices[] __initdata = {
    &heartbeat_device,
    &smsc911x_device,
    &flash_device,
};


static int __init mpr2_devices_setup(void)
{
    regulator_register_fixed(0, dummy_supplies, ARRAY_SIZE(dummy_supplies));

    return platform_add_devices(mpr2_devices, ARRAY_SIZE(mpr2_devices));
}
device_initcall(mpr2_devices_setup);

/*
 * Initialize IRQ setting
 */
static void __init init_mpr2_IRQ(void)
{
    plat_irq_setup_pins(IRQ_MODE_IRQ); /* install handlers for IRQ0-5 */

    irq_set_irq_type(evt2irq(0x600), IRQ_TYPE_LEVEL_LOW);    /* IRQ0 CAN1 */
    irq_set_irq_type(evt2irq(0x620), IRQ_TYPE_LEVEL_LOW);    /* IRQ1 CAN2 */
    irq_set_irq_type(evt2irq(0x640), IRQ_TYPE_LEVEL_LOW);    /* IRQ2 CAN3 */
    irq_set_irq_type(evt2irq(0x660), IRQ_TYPE_LEVEL_LOW);    /* IRQ3 SMSC9115 */
    irq_set_irq_type(evt2irq(0x680), IRQ_TYPE_EDGE_RISING);  /* IRQ4 touchscreen */
    irq_set_irq_type(evt2irq(0x6a0), IRQ_TYPE_EDGE_FALLING); /* IRQ5 touchscreen */

    intc_set_priority(evt2irq(0x600), 13);      /* IRQ0 CAN1 */
    intc_set_priority(evt2irq(0x620), 13);      /* IRQ0 CAN2 */
    intc_set_priority(evt2irq(0x640), 13);      /* IRQ0 CAN3 */
    intc_set_priority(evt2irq(0x660), 6);       /* IRQ3 SMSC9115 */
}

/*
 * The Machine Vector
 */

static struct sh_machine_vector mv_mpr2 __initmv = {
    .mv_name        = "mpr2",
    .mv_setup       = mpr2_setup,
    .mv_init_irq        = init_mpr2_IRQ,
};