// SPDX-License-Identifier: GPL-2.0
/*
 * arch/sh/boards/renesas/r7780rp/setup.c
 *
 * Renesas Solutions Highlander Support.
 *
 * Copyright (C) 2002 Atom Create Engineering Co., Ltd.
 * Copyright (C) 2005 - 2008 Paul Mundt
 *
 * This contains support for the R7780RP-1, R7780MP, and R7785RP
 * Highlander modules.
 */
#include <linux/init.h>
#include <linux/io.h>
#include <linux/platform_device.h>
#include <linux/ata_platform.h>
#include <linux/types.h>
#include <linux/mtd/physmap.h>
#include <linux/i2c.h>
#include <linux/irq.h>
#include <linux/interrupt.h>
#include <linux/usb/r8a66597.h>
#include <linux/usb/m66592.h>
#include <linux/clkdev.h>
#include <net/ax88796.h>
#include <asm/machvec.h>
#include <mach/highlander.h>
#include <asm/clock.h>
#include <asm/heartbeat.h>
#include <asm/io.h>
#include <asm/io_trapped.h>

static struct r8a66597_platdata r8a66597_data = {
        .xtal = R8A66597_PLATDATA_XTAL_12MHZ,
        .vif = 1,
};

static struct resource r8a66597_usb_host_resources[] = {
        [0] = {
                .start  = 0xA4200000,
                .end    = 0xA42000FF,
                .flags  = IORESOURCE_MEM,
        },
        [1] = {
                .start  = IRQ_EXT1,             /* irq number */
                .end    = IRQ_EXT1,
                .flags  = IORESOURCE_IRQ | IRQF_TRIGGER_LOW,
        },
};

static struct platform_device r8a66597_usb_host_device = {
        .name           = "r8a66597_hcd",
        .id             = -1,
        .dev = {
                .dma_mask               = NULL,         /* don't use dma */
                .coherent_dma_mask      = 0xffffffff,
                .platform_data          = &r8a66597_data,
        },
        .num_resources  = ARRAY_SIZE(r8a66597_usb_host_resources),
        .resource       = r8a66597_usb_host_resources,
};

static struct m66592_platdata usbf_platdata = {
        .xtal = M66592_PLATDATA_XTAL_24MHZ,
        .vif = 1,
};

static struct resource m66592_usb_peripheral_resources[] = {
        [0] = {
                .name   = "m66592_udc",
                .start  = 0xb0000000,
                .end    = 0xb00000FF,
                .flags  = IORESOURCE_MEM,
        },
        [1] = {
                .name   = "m66592_udc",
                .start  = IRQ_EXT4,             /* irq number */
                .end    = IRQ_EXT4,
                .flags  = IORESOURCE_IRQ,
        },
};

static struct platform_device m66592_usb_peripheral_device = {
        .name           = "m66592_udc",
        .id             = -1,
        .dev = {
                .dma_mask               = NULL,         /* don't use dma */
                .coherent_dma_mask      = 0xffffffff,
                .platform_data          = &usbf_platdata,
        },
        .num_resources  = ARRAY_SIZE(m66592_usb_peripheral_resources),
        .resource       = m66592_usb_peripheral_resources,
};

static struct resource cf_ide_resources[] = {
        [0] = {
                .start  = PA_AREA5_IO + 0x1000,
                .end    = PA_AREA5_IO + 0x1000 + 0x08 - 1,
                .flags  = IORESOURCE_MEM,
        },
        [1] = {
                .start  = PA_AREA5_IO + 0x80c,
                .end    = PA_AREA5_IO + 0x80c + 0x16 - 1,
                .flags  = IORESOURCE_MEM,
        },
        [2] = {
                .start  = IRQ_CF,
                .flags  = IORESOURCE_IRQ,
        },
};

static struct pata_platform_info pata_info = {
        .ioport_shift   = 1,
};

static struct platform_device cf_ide_device  = {
        .name           = "pata_platform",
        .id             = -1,
        .num_resources  = ARRAY_SIZE(cf_ide_resources),
        .resource       = cf_ide_resources,
        .dev    = {
                .platform_data  = &pata_info,
        },
};

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

#ifndef CONFIG_SH_R7785RP
static unsigned char heartbeat_bit_pos[] = { 2, 1, 0, 3, 6, 5, 4, 7 };

static struct heartbeat_data heartbeat_data = {
        .bit_pos        = heartbeat_bit_pos,
        .nr_bits        = ARRAY_SIZE(heartbeat_bit_pos),
};
#endif

static struct platform_device heartbeat_device = {
        .name           = "heartbeat",
        .id             = -1,

        /* R7785RP has a slightly more sensible FPGA.. */
#ifndef CONFIG_SH_R7785RP
        .dev    = {
                .platform_data  = &heartbeat_data,
        },
#endif
        .num_resources  = ARRAY_SIZE(heartbeat_resources),
        .resource       = heartbeat_resources,
};

static struct ax_plat_data ax88796_platdata = {
        .flags          = AXFLG_HAS_93CX6,
        .wordlength     = 2,
        .dcr_val        = 0x1,
        .rcr_val        = 0x40,
};

static struct resource ax88796_resources[] = {
        {
#ifdef CONFIG_SH_R7780RP
                .start  = 0xa5800400,
                .end    = 0xa5800400 + (0x20 * 0x2) - 1,
#else
                .start  = 0xa4100400,
                .end    = 0xa4100400 + (0x20 * 0x2) - 1,
#endif
                .flags  = IORESOURCE_MEM,
        },
        {
                .start  = IRQ_AX88796,
                .end    = IRQ_AX88796,
                .flags  = IORESOURCE_IRQ,
        },
};

static struct platform_device ax88796_device = {
        .name           = "ax88796",
        .id             = 0,

        .dev    = {
                .platform_data = &ax88796_platdata,
        },

        .num_resources  = ARRAY_SIZE(ax88796_resources),
        .resource       = ax88796_resources,
};

static struct mtd_partition nor_flash_partitions[] = {
        {
                .name           = "loader",
                .offset         = 0x00000000,
                .size           = 512 * 1024,
        },
        {
                .name           = "bootenv",
                .offset         = MTDPART_OFS_APPEND,
                .size           = 512 * 1024,
        },
        {
                .name           = "kernel",
                .offset         = MTDPART_OFS_APPEND,
                .size           = 4 * 1024 * 1024,
        },
        {
                .name           = "data",
                .offset         = MTDPART_OFS_APPEND,
                .size           = MTDPART_SIZ_FULL,
        },
};

static struct physmap_flash_data nor_flash_data = {
        .width          = 4,
        .parts          = nor_flash_partitions,
        .nr_parts       = ARRAY_SIZE(nor_flash_partitions),
};

/* This config is flash board for mass production. */
static struct resource nor_flash_resources[] = {
        [0]     = {
                .start  = PA_NORFLASH_ADDR,
                .end    = PA_NORFLASH_ADDR + PA_NORFLASH_SIZE - 1,
                .flags  = IORESOURCE_MEM,
        }
};

static struct platform_device nor_flash_device = {
        .name           = "physmap-flash",
        .dev            = {
                .platform_data  = &nor_flash_data,
        },
        .num_resources  = ARRAY_SIZE(nor_flash_resources),
        .resource       = nor_flash_resources,
};

static struct resource smbus_resources[] = {
        [0] = {
                .start  = PA_SMCR,
                .end    = PA_SMCR + 0x100 - 1,
                .flags  = IORESOURCE_MEM,
        },
        [1] = {
                .start  = IRQ_SMBUS,
                .end    = IRQ_SMBUS,
                .flags  = IORESOURCE_IRQ,
        },
};

static struct platform_device smbus_device = {
        .name           = "i2c-highlander",
        .id             = 0,
        .num_resources  = ARRAY_SIZE(smbus_resources),
        .resource       = smbus_resources,
};

static struct i2c_board_info __initdata highlander_i2c_devices[] = {
        {
                I2C_BOARD_INFO("r2025sd", 0x32),
        },
};

static struct platform_device *r7780rp_devices[] __initdata = {
        &r8a66597_usb_host_device,
        &m66592_usb_peripheral_device,
        &heartbeat_device,
        &smbus_device,
        &nor_flash_device,
#ifndef CONFIG_SH_R7780RP
        &ax88796_device,
#endif
};

/*
 * The CF is connected using a 16-bit bus where 8-bit operations are
 * unsupported. The linux ata driver is however using 8-bit operations, so
 * insert a trapped io filter to convert 8-bit operations into 16-bit.
 */
static struct trapped_io cf_trapped_io = {
        .resource               = cf_ide_resources,
        .num_resources          = 2,
        .minimum_bus_width      = 16,
};

static int __init r7780rp_devices_setup(void)
{
        int ret = 0;

#ifndef CONFIG_SH_R7780RP
        if (register_trapped_io(&cf_trapped_io) == 0)
                ret |= platform_device_register(&cf_ide_device);
#endif

        ret |= platform_add_devices(r7780rp_devices,
                                    ARRAY_SIZE(r7780rp_devices));

        ret |= i2c_register_board_info(0, highlander_i2c_devices,
                                       ARRAY_SIZE(highlander_i2c_devices));

        return ret;
}
device_initcall(r7780rp_devices_setup);

/*
 * Platform specific clocks
 */
static int ivdr_clk_enable(struct clk *clk)
{
        __raw_writew(__raw_readw(PA_IVDRCTL) | (1 << IVDR_CK_ON), PA_IVDRCTL);
        return 0;
}

static void ivdr_clk_disable(struct clk *clk)
{
        __raw_writew(__raw_readw(PA_IVDRCTL) & ~(1 << IVDR_CK_ON), PA_IVDRCTL);
}

static struct sh_clk_ops ivdr_clk_ops = {
        .enable         = ivdr_clk_enable,
        .disable        = ivdr_clk_disable,
};

static struct clk ivdr_clk = {
        .ops            = &ivdr_clk_ops,
};

static struct clk *r7780rp_clocks[] = {
        &ivdr_clk,
};

static struct clk_lookup lookups[] = {
        /* main clocks */
        CLKDEV_CON_ID("ivdr_clk", &ivdr_clk),
};

static void r7780rp_power_off(void)
{
        if (mach_is_r7780mp() || mach_is_r7785rp())
                __raw_writew(0x0001, PA_POFF);
}

/*
 * Initialize the board
 */
static void __init highlander_setup(char **cmdline_p)
{
        u16 ver = __raw_readw(PA_VERREG);
        int i;

        printk(KERN_INFO "Renesas Solutions Highlander %s support.\n",
                         mach_is_r7780rp() ? "R7780RP-1" :
                         mach_is_r7780mp() ? "R7780MP"   :
                                             "R7785RP");

        printk(KERN_INFO "Board version: %d (revision %d), "
                         "FPGA version: %d (revision %d)\n",
                         (ver >> 12) & 0xf, (ver >> 8) & 0xf,
                         (ver >>  4) & 0xf, ver & 0xf);

        highlander_plat_pinmux_setup();

        /*
         * Enable the important clocks right away..
         */
        for (i = 0; i < ARRAY_SIZE(r7780rp_clocks); i++) {
                struct clk *clk = r7780rp_clocks[i];

                clk_register(clk);
                clk_enable(clk);
        }

        clkdev_add_table(lookups, ARRAY_SIZE(lookups));

        __raw_writew(0x0000, PA_OBLED); /* Clear LED. */

        if (mach_is_r7780rp())
                __raw_writew(0x0001, PA_SDPOW); /* SD Power ON */

        __raw_writew(__raw_readw(PA_IVDRCTL) | 0x01, PA_IVDRCTL);       /* Si13112 */

        pm_power_off = r7780rp_power_off;
}

static unsigned char irl2irq[HL_NR_IRL];

static int highlander_irq_demux(int irq)
{
        if (irq >= HL_NR_IRL || irq < 0 || !irl2irq[irq])
                return irq;

        return irl2irq[irq];
}

static void __init highlander_init_irq(void)
{
        unsigned char *ucp = highlander_plat_irq_setup();

        if (ucp) {
                plat_irq_setup_pins(IRQ_MODE_IRL3210);
                memcpy(irl2irq, ucp, HL_NR_IRL);
        }
}

/*
 * The Machine Vector
 */
static struct sh_machine_vector mv_highlander __initmv = {
        .mv_name                = "Highlander",
        .mv_setup               = highlander_setup,
        .mv_init_irq            = highlander_init_irq,
        .mv_irq_demux           = highlander_irq_demux,
};