// SPDX-License-Identifier: GPL-2.0
/*
 * linux/arch/sh/boards/magicpanel/setup.c
 *
 *  Copyright (C) 2007  Markus Brunner, Mark Jonas
 *
 *  Magic Panel Release 2 board setup
 */
#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/gpio.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,
};