// SPDX-License-Identifier: GPL-2.0
/*
 * Renesas Technology Corp. R0P7785LC0011RL Support.
 *
 * Copyright (C) 2008  Yoshihiro Shimoda
 * Copyright (C) 2009  Paul Mundt
 */
#include <linux/init.h>
#include <linux/platform_device.h>
#include <linux/sm501.h>
#include <linux/sm501-regs.h>
#include <linux/fb.h>
#include <linux/mtd/physmap.h>
#include <linux/delay.h>
#include <linux/interrupt.h>
#include <linux/i2c.h>
#include <linux/platform_data/i2c-pca-platform.h>
#include <linux/i2c-algo-pca.h>
#include <linux/usb/r8a66597.h>
#include <linux/sh_intc.h>
#include <linux/irq.h>
#include <linux/io.h>
#include <linux/clk.h>
#include <linux/errno.h>
#include <linux/gpio/machine.h>
#include <mach/sh7785lcr.h>
#include <cpu/sh7785.h>
#include <asm/heartbeat.h>
#include <asm/clock.h>
#include <asm/bl_bit.h>

/*
 * NOTE: This board has 2 physical memory maps.
 *       Please look at include/asm-sh/sh7785lcr.h or hardware manual.
 */
static struct resource heartbeat_resource = {
        .start  = PLD_LEDCR,
        .end    = PLD_LEDCR,
        .flags  = IORESOURCE_MEM | IORESOURCE_MEM_8BIT,
};

static struct platform_device heartbeat_device = {
        .name           = "heartbeat",
        .id             = -1,
        .num_resources  = 1,
        .resource       = &heartbeat_resource,
};

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),
};

static struct resource nor_flash_resources[] = {
        [0]     = {
                .start  = NOR_FLASH_ADDR,
                .end    = NOR_FLASH_ADDR + NOR_FLASH_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 r8a66597_platdata r8a66597_data = {
        .xtal = R8A66597_PLATDATA_XTAL_12MHZ,
        .vif = 1,
};

static struct resource r8a66597_usb_host_resources[] = {
        [0] = {
                .start  = R8A66597_ADDR,
                .end    = R8A66597_ADDR + R8A66597_SIZE - 1,
                .flags  = IORESOURCE_MEM,
        },
        [1] = {
                .start  = evt2irq(0x240),
                .end    = evt2irq(0x240),
                .flags  = IORESOURCE_IRQ | IRQF_TRIGGER_LOW,
        },
};

static struct platform_device r8a66597_usb_host_device = {
        .name           = "r8a66597_hcd",
        .id             = -1,
        .dev = {
                .dma_mask               = NULL,
                .coherent_dma_mask      = 0xffffffff,
                .platform_data          = &r8a66597_data,
        },
        .num_resources  = ARRAY_SIZE(r8a66597_usb_host_resources),
        .resource       = r8a66597_usb_host_resources,
};

static struct resource sm501_resources[] = {
        [0]     = {
                .start  = SM107_MEM_ADDR,
                .end    = SM107_MEM_ADDR + SM107_MEM_SIZE - 1,
                .flags  = IORESOURCE_MEM,
        },
        [1]     = {
                .start  = SM107_REG_ADDR,
                .end    = SM107_REG_ADDR + SM107_REG_SIZE - 1,
                .flags  = IORESOURCE_MEM,
        },
        [2]     = {
                .start  = evt2irq(0x340),
                .flags  = IORESOURCE_IRQ,
        },
};

static struct fb_videomode sm501_default_mode_crt = {
        .pixclock       = 35714,        /* 28MHz */
        .xres           = 640,
        .yres           = 480,
        .left_margin    = 105,
        .right_margin   = 16,
        .upper_margin   = 33,
        .lower_margin   = 10,
        .hsync_len      = 39,
        .vsync_len      = 2,
        .sync = FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
};

static struct fb_videomode sm501_default_mode_pnl = {
        .pixclock       = 40000,        /* 25MHz */
        .xres           = 640,
        .yres           = 480,
        .left_margin    = 2,
        .right_margin   = 16,
        .upper_margin   = 33,
        .lower_margin   = 10,
        .hsync_len      = 39,
        .vsync_len      = 2,
        .sync           = 0,
};

static struct sm501_platdata_fbsub sm501_pdata_fbsub_pnl = {
        .def_bpp        = 16,
        .def_mode       = &sm501_default_mode_pnl,
        .flags          = SM501FB_FLAG_USE_INIT_MODE |
                          SM501FB_FLAG_USE_HWCURSOR |
                          SM501FB_FLAG_USE_HWACCEL |
                          SM501FB_FLAG_DISABLE_AT_EXIT |
                          SM501FB_FLAG_PANEL_NO_VBIASEN,
};

static struct sm501_platdata_fbsub sm501_pdata_fbsub_crt = {
        .def_bpp        = 16,
        .def_mode       = &sm501_default_mode_crt,
        .flags          = SM501FB_FLAG_USE_INIT_MODE |
                          SM501FB_FLAG_USE_HWCURSOR |
                          SM501FB_FLAG_USE_HWACCEL |
                          SM501FB_FLAG_DISABLE_AT_EXIT,
};

static struct sm501_platdata_fb sm501_fb_pdata = {
        .fb_route       = SM501_FB_OWN,
        .fb_crt         = &sm501_pdata_fbsub_crt,
        .fb_pnl         = &sm501_pdata_fbsub_pnl,
};

static struct sm501_initdata sm501_initdata = {
        .gpio_high      = {
                .set    = 0x00001fe0,
                .mask   = 0x0,
        },
        .devices        = 0,
        .mclk           = 84 * 1000000,
        .m1xclk         = 112 * 1000000,
};

static struct sm501_platdata sm501_platform_data = {
        .init           = &sm501_initdata,
        .fb             = &sm501_fb_pdata,
};

static struct platform_device sm501_device = {
        .name           = "sm501",
        .id             = -1,
        .dev            = {
                .platform_data  = &sm501_platform_data,
        },
        .num_resources  = ARRAY_SIZE(sm501_resources),
        .resource       = sm501_resources,
};

static struct resource i2c_proto_resources[] = {
        [0] = {
                .start  = PCA9564_PROTO_32BIT_ADDR,
                .end    = PCA9564_PROTO_32BIT_ADDR + PCA9564_SIZE - 1,
                .flags  = IORESOURCE_MEM | IORESOURCE_MEM_8BIT,
        },
        [1] = {
                .start  = evt2irq(0x380),
                .end    = evt2irq(0x380),
                .flags  = IORESOURCE_IRQ,
        },
};

static struct resource i2c_resources[] = {
        [0] = {
                .start  = PCA9564_ADDR,
                .end    = PCA9564_ADDR + PCA9564_SIZE - 1,
                .flags  = IORESOURCE_MEM | IORESOURCE_MEM_8BIT,
        },
        [1] = {
                .start  = evt2irq(0x380),
                .end    = evt2irq(0x380),
                .flags  = IORESOURCE_IRQ,
        },
};

static struct gpiod_lookup_table i2c_gpio_table = {
        .dev_id = "i2c.0",
        .table = {
                GPIO_LOOKUP("pfc-sh7757", 0, "reset-gpios", GPIO_ACTIVE_LOW),
                { },
        },
};

static struct i2c_pca9564_pf_platform_data i2c_platform_data = {
        .i2c_clock_speed        = I2C_PCA_CON_330kHz,
        .timeout                = HZ,
};

static struct platform_device i2c_device = {
        .name           = "i2c-pca-platform",
        .id             = -1,
        .dev            = {
                .platform_data  = &i2c_platform_data,
        },
        .num_resources  = ARRAY_SIZE(i2c_resources),
        .resource       = i2c_resources,
};

static struct platform_device *sh7785lcr_devices[] __initdata = {
        &heartbeat_device,
        &nor_flash_device,
        &r8a66597_usb_host_device,
        &sm501_device,
        &i2c_device,
};

static struct i2c_board_info __initdata sh7785lcr_i2c_devices[] = {
        {
                I2C_BOARD_INFO("r2025sd", 0x32),
        },
};

static int __init sh7785lcr_devices_setup(void)
{
        i2c_register_board_info(0, sh7785lcr_i2c_devices,
                                ARRAY_SIZE(sh7785lcr_i2c_devices));

        if (mach_is_sh7785lcr_pt()) {
                i2c_device.resource = i2c_proto_resources;
                i2c_device.num_resources = ARRAY_SIZE(i2c_proto_resources);
        }

        gpiod_add_lookup_table(&i2c_gpio_table);
        return platform_add_devices(sh7785lcr_devices,
                                    ARRAY_SIZE(sh7785lcr_devices));
}
device_initcall(sh7785lcr_devices_setup);

/* Initialize IRQ setting */
void __init init_sh7785lcr_IRQ(void)
{
        plat_irq_setup_pins(IRQ_MODE_IRQ7654);
        plat_irq_setup_pins(IRQ_MODE_IRQ3210);
}

static int sh7785lcr_clk_init(void)
{
        struct clk *clk;
        int ret;

        clk = clk_get(NULL, "extal");
        if (IS_ERR(clk))
                return PTR_ERR(clk);
        ret = clk_set_rate(clk, 33333333);
        clk_put(clk);

        return ret;
}

static void sh7785lcr_power_off(void)
{
        unsigned char *p;

        p = ioremap(PLD_POFCR, PLD_POFCR + 1);
        if (!p) {
                printk(KERN_ERR "%s: ioremap error.\n", __func__);
                return;
        }
        *p = 0x01;
        iounmap(p);
        set_bl_bit();
        while (1)
                cpu_relax();
}

/* Initialize the board */
static void __init sh7785lcr_setup(char **cmdline_p)
{
        void __iomem *sm501_reg;

        printk(KERN_INFO "Renesas Technology Corp. R0P7785LC0011RL support.\n");

        pm_power_off = sh7785lcr_power_off;

        /* sm501 DRAM configuration */
        sm501_reg = ioremap(SM107_REG_ADDR, SM501_DRAM_CONTROL);
        if (!sm501_reg) {
                printk(KERN_ERR "%s: ioremap error.\n", __func__);
                return;
        }

        writel(0x000307c2, sm501_reg + SM501_DRAM_CONTROL);
        iounmap(sm501_reg);
}

/* Return the board specific boot mode pin configuration */
static int sh7785lcr_mode_pins(void)
{
        int value = 0;

        /* These are the factory default settings of S1 and S2.
         * If you change these dip switches then you will need to
         * adjust the values below as well.
         */
        value |= MODE_PIN4; /* Clock Mode 16 */
        value |= MODE_PIN5; /* 32-bit Area0 bus width */
        value |= MODE_PIN6; /* 32-bit Area0 bus width */
        value |= MODE_PIN7; /* Area 0 SRAM interface [fixed] */
        value |= MODE_PIN8; /* Little Endian */
        value |= MODE_PIN9; /* Master Mode */
        value |= MODE_PIN14; /* No PLL step-up */

        return value;
}

/*
 * The Machine Vector
 */
static struct sh_machine_vector mv_sh7785lcr __initmv = {
        .mv_name                = "SH7785LCR",
        .mv_setup               = sh7785lcr_setup,
        .mv_clk_init            = sh7785lcr_clk_init,
        .mv_init_irq            = init_sh7785lcr_IRQ,
        .mv_mode_pins           = sh7785lcr_mode_pins,
};