// SPDX-License-Identifier: GPL-2.0
/*
 * KFR2R09 board support code
 *
 * Copyright (C) 2009 Magnus Damm
 */

#include <asm/clock.h>
#include <asm/io.h>
#include <asm/machvec.h>
#include <asm/suspend.h>

#include <cpu/sh7724.h>

#include <linux/clkdev.h>
#include <linux/delay.h>
#include <linux/gpio.h>
#include <linux/gpio/machine.h>
#include <linux/i2c.h>
#include <linux/init.h>
#include <linux/input.h>
#include <linux/input/sh_keysc.h>
#include <linux/interrupt.h>
#include <linux/memblock.h>
#include <linux/mmc/host.h>
#include <linux/mtd/physmap.h>
#include <linux/platform_data/lv5207lp.h>
#include <linux/platform_data/tmio.h>
#include <linux/platform_device.h>
#include <linux/regulator/fixed.h>
#include <linux/regulator/machine.h>
#include <linux/sh_intc.h>
#include <linux/usb/r8a66597.h>
#include <linux/videodev2.h>
#include <linux/dma-map-ops.h>

#include <mach/kfr2r09.h>

#include <media/drv-intf/renesas-ceu.h>
#include <media/i2c/rj54n1cb0c.h>

#include <video/sh_mobile_lcdc.h>

#define CEU_BUFFER_MEMORY_SIZE          (4 << 20)
static phys_addr_t ceu_dma_membase;

/* set VIO_CKO clock to 25MHz */
#define CEU_MCLK_FREQ                   25000000
#define DRVCRB                          0xA405018C

static struct mtd_partition kfr2r09_nor_flash_partitions[] =
{
        {
                .name = "boot",
                .offset = 0,
                .size = (4 * 1024 * 1024),
                .mask_flags = MTD_WRITEABLE,    /* Read-only */
        },
        {
                .name = "other",
                .offset = MTDPART_OFS_APPEND,
                .size = MTDPART_SIZ_FULL,
        },
};

static struct physmap_flash_data kfr2r09_nor_flash_data = {
        .width          = 2,
        .parts          = kfr2r09_nor_flash_partitions,
        .nr_parts       = ARRAY_SIZE(kfr2r09_nor_flash_partitions),
};

static struct resource kfr2r09_nor_flash_resources[] = {
        [0] = {
                .name           = "NOR Flash",
                .start          = 0x00000000,
                .end            = 0x03ffffff,
                .flags          = IORESOURCE_MEM,
        }
};

static struct platform_device kfr2r09_nor_flash_device = {
        .name           = "physmap-flash",
        .resource       = kfr2r09_nor_flash_resources,
        .num_resources  = ARRAY_SIZE(kfr2r09_nor_flash_resources),
        .dev            = {
                .platform_data = &kfr2r09_nor_flash_data,
        },
};

static struct resource kfr2r09_nand_flash_resources[] = {
        [0] = {
                .name           = "NAND Flash",
                .start          = 0x10000000,
                .end            = 0x1001ffff,
                .flags          = IORESOURCE_MEM,
        }
};

static struct platform_device kfr2r09_nand_flash_device = {
        .name           = "onenand-flash",
        .resource       = kfr2r09_nand_flash_resources,
        .num_resources  = ARRAY_SIZE(kfr2r09_nand_flash_resources),
};

static struct sh_keysc_info kfr2r09_sh_keysc_info = {
        .mode = SH_KEYSC_MODE_1, /* KEYOUT0->4, KEYIN0->4 */
        .scan_timing = 3,
        .delay = 10,
        .keycodes = {
                KEY_PHONE, KEY_CLEAR, KEY_MAIL, KEY_WWW, KEY_ENTER,
                KEY_1, KEY_2, KEY_3, 0, KEY_UP,
                KEY_4, KEY_5, KEY_6, 0, KEY_LEFT,
                KEY_7, KEY_8, KEY_9, KEY_PROG1, KEY_RIGHT,
                KEY_S, KEY_0, KEY_P, KEY_PROG2, KEY_DOWN,
                0, 0, 0, 0, 0
        },
};

static struct resource kfr2r09_sh_keysc_resources[] = {
        [0] = {
                .name   = "KEYSC",
                .start  = 0x044b0000,
                .end    = 0x044b000f,
                .flags  = IORESOURCE_MEM,
        },
        [1] = {
                .start  = evt2irq(0xbe0),
                .flags  = IORESOURCE_IRQ,
        },
};

static struct platform_device kfr2r09_sh_keysc_device = {
        .name           = "sh_keysc",
        .id             = 0, /* "keysc0" clock */
        .num_resources  = ARRAY_SIZE(kfr2r09_sh_keysc_resources),
        .resource       = kfr2r09_sh_keysc_resources,
        .dev    = {
                .platform_data  = &kfr2r09_sh_keysc_info,
        },
};

static const struct fb_videomode kfr2r09_lcdc_modes[] = {
        {
                .name = "TX07D34VM0AAA",
                .xres = 240,
                .yres = 400,
                .left_margin = 0,
                .right_margin = 16,
                .hsync_len = 8,
                .upper_margin = 0,
                .lower_margin = 1,
                .vsync_len = 1,
                .sync = FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
        },
};

static struct sh_mobile_lcdc_info kfr2r09_sh_lcdc_info = {
        .clock_source = LCDC_CLK_BUS,
        .ch[0] = {
                .chan = LCDC_CHAN_MAINLCD,
                .fourcc = V4L2_PIX_FMT_RGB565,
                .interface_type = SYS18,
                .clock_divider = 6,
                .flags = LCDC_FLAGS_DWPOL,
                .lcd_modes = kfr2r09_lcdc_modes,
                .num_modes = ARRAY_SIZE(kfr2r09_lcdc_modes),
                .panel_cfg = {
                        .width = 35,
                        .height = 58,
                        .setup_sys = kfr2r09_lcd_setup,
                        .start_transfer = kfr2r09_lcd_start,
                },
                .sys_bus_cfg = {
                        .ldmt2r = 0x07010904,
                        .ldmt3r = 0x14012914,
                        /* set 1s delay to encourage fsync() */
                        .deferred_io_msec = 1000,
                },
        }
};

static struct resource kfr2r09_sh_lcdc_resources[] = {
        [0] = {
                .name   = "LCDC",
                .start  = 0xfe940000, /* P4-only space */
                .end    = 0xfe942fff,
                .flags  = IORESOURCE_MEM,
        },
        [1] = {
                .start  = evt2irq(0xf40),
                .flags  = IORESOURCE_IRQ,
        },
};

static struct platform_device kfr2r09_sh_lcdc_device = {
        .name           = "sh_mobile_lcdc_fb",
        .num_resources  = ARRAY_SIZE(kfr2r09_sh_lcdc_resources),
        .resource       = kfr2r09_sh_lcdc_resources,
        .dev    = {
                .platform_data  = &kfr2r09_sh_lcdc_info,
        },
};

static struct lv5207lp_platform_data kfr2r09_backlight_data = {
        .dev = &kfr2r09_sh_lcdc_device.dev,
        .def_value = 13,
        .max_value = 13,
};

static struct i2c_board_info kfr2r09_backlight_board_info = {
        I2C_BOARD_INFO("lv5207lp", 0x75),
        .platform_data = &kfr2r09_backlight_data,
};

static struct r8a66597_platdata kfr2r09_usb0_gadget_data = {
        .on_chip = 1,
};

static struct resource kfr2r09_usb0_gadget_resources[] = {
        [0] = {
                .start  = 0x04d80000,
                .end    = 0x04d80123,
                .flags  = IORESOURCE_MEM,
        },
        [1] = {
                .start  = evt2irq(0xa20),
                .end    = evt2irq(0xa20),
                .flags  = IORESOURCE_IRQ | IRQF_TRIGGER_LOW,
        },
};

static struct platform_device kfr2r09_usb0_gadget_device = {
        .name           = "r8a66597_udc",
        .id             = 0,
        .dev = {
                .dma_mask               = NULL,         /*  not use dma */
                .coherent_dma_mask      = 0xffffffff,
                .platform_data  = &kfr2r09_usb0_gadget_data,
        },
        .num_resources  = ARRAY_SIZE(kfr2r09_usb0_gadget_resources),
        .resource       = kfr2r09_usb0_gadget_resources,
};

static struct ceu_platform_data ceu_pdata = {
        .num_subdevs                    = 1,
        .subdevs = {
                { /* [0] = rj54n1cb0c */
                        .flags          = 0,
                        .bus_width      = 8,
                        .bus_shift      = 0,
                        .i2c_adapter_id = 1,
                        .i2c_address    = 0x50,
                },
        },
};

static struct resource kfr2r09_ceu_resources[] = {
        [0] = {
                .name   = "CEU",
                .start  = 0xfe910000,
                .end    = 0xfe91009f,
                .flags  = IORESOURCE_MEM,
        },
        [1] = {
                .start  = evt2irq(0x880),
                .end    = evt2irq(0x880),
                .flags  = IORESOURCE_IRQ,
        },
};

static struct platform_device kfr2r09_ceu_device = {
        .name           = "renesas-ceu",
        .id             = 0, /* "ceu0" clock */
        .num_resources  = ARRAY_SIZE(kfr2r09_ceu_resources),
        .resource       = kfr2r09_ceu_resources,
        .dev    = {
                .platform_data  = &ceu_pdata,
        },
};

static struct rj54n1_pdata rj54n1_priv = {
        .mclk_freq      = CEU_MCLK_FREQ,
        .ioctl_high     = false,
};

static struct i2c_board_info kfr2r09_i2c_camera = {
        I2C_BOARD_INFO("rj54n1cb0c", 0x50),
        .platform_data = &rj54n1_priv,
};

static struct gpiod_lookup_table rj54n1_gpios = {
        .dev_id         = "1-0050",
        .table          = {
                GPIO_LOOKUP("sh7724_pfc", GPIO_PTB4, "poweron",
                            GPIO_ACTIVE_HIGH),
                GPIO_LOOKUP("sh7724_pfc", GPIO_PTB7, "enable",
                            GPIO_ACTIVE_HIGH),
        },
};

/* Fixed 3.3V regulator to be used by SDHI0 */
static struct regulator_consumer_supply fixed3v3_power_consumers[] =
{
        REGULATOR_SUPPLY("vmmc", "sh_mobile_sdhi.0"),
        REGULATOR_SUPPLY("vqmmc", "sh_mobile_sdhi.0"),
};

static struct resource kfr2r09_sh_sdhi0_resources[] = {
        [0] = {
                .name   = "SDHI0",
                .start  = 0x04ce0000,
                .end    = 0x04ce00ff,
                .flags  = IORESOURCE_MEM,
        },
        [1] = {
                .start  = evt2irq(0xe80),
                .flags  = IORESOURCE_IRQ,
        },
};

static struct tmio_mmc_data sh7724_sdhi0_data = {
        .chan_priv_tx   = (void *)SHDMA_SLAVE_SDHI0_TX,
        .chan_priv_rx   = (void *)SHDMA_SLAVE_SDHI0_RX,
        .capabilities   = MMC_CAP_SDIO_IRQ,
        .capabilities2  = MMC_CAP2_NO_WRITE_PROTECT,
};

static struct platform_device kfr2r09_sh_sdhi0_device = {
        .name           = "sh_mobile_sdhi",
        .num_resources  = ARRAY_SIZE(kfr2r09_sh_sdhi0_resources),
        .resource       = kfr2r09_sh_sdhi0_resources,
        .dev = {
                .platform_data  = &sh7724_sdhi0_data,
        },
};

static struct platform_device *kfr2r09_devices[] __initdata = {
        &kfr2r09_nor_flash_device,
        &kfr2r09_nand_flash_device,
        &kfr2r09_sh_keysc_device,
        &kfr2r09_sh_lcdc_device,
        &kfr2r09_sh_sdhi0_device,
};

#define BSC_CS0BCR 0xfec10004
#define BSC_CS0WCR 0xfec10024
#define BSC_CS4BCR 0xfec10010
#define BSC_CS4WCR 0xfec10030
#define PORT_MSELCRB 0xa4050182

#ifdef CONFIG_I2C
static int kfr2r09_usb0_gadget_i2c_setup(void)
{
        struct i2c_adapter *a;
        struct i2c_msg msg;
        unsigned char buf[2];
        int ret;

        a = i2c_get_adapter(0);
        if (!a)
                return -ENODEV;

        /* set bit 1 (the second bit) of chip at 0x09, register 0x13 */
        buf[0] = 0x13;
        msg.addr = 0x09;
        msg.buf = buf;
        msg.len = 1;
        msg.flags = 0;
        ret = i2c_transfer(a, &msg, 1);
        if (ret != 1)
                return -ENODEV;

        buf[0] = 0;
        msg.addr = 0x09;
        msg.buf = buf;
        msg.len = 1;
        msg.flags = I2C_M_RD;
        ret = i2c_transfer(a, &msg, 1);
        if (ret != 1)
                return -ENODEV;

        buf[1] = buf[0] | (1 << 1);
        buf[0] = 0x13;
        msg.addr = 0x09;
        msg.buf = buf;
        msg.len = 2;
        msg.flags = 0;
        ret = i2c_transfer(a, &msg, 1);
        if (ret != 1)
                return -ENODEV;

        return 0;
}

static int kfr2r09_serial_i2c_setup(void)
{
        struct i2c_adapter *a;
        struct i2c_msg msg;
        unsigned char buf[2];
        int ret;

        a = i2c_get_adapter(0);
        if (!a)
                return -ENODEV;

        /* set bit 6 (the 7th bit) of chip at 0x09, register 0x13 */
        buf[0] = 0x13;
        msg.addr = 0x09;
        msg.buf = buf;
        msg.len = 1;
        msg.flags = 0;
        ret = i2c_transfer(a, &msg, 1);
        if (ret != 1)
                return -ENODEV;

        buf[0] = 0;
        msg.addr = 0x09;
        msg.buf = buf;
        msg.len = 1;
        msg.flags = I2C_M_RD;
        ret = i2c_transfer(a, &msg, 1);
        if (ret != 1)
                return -ENODEV;

        buf[1] = buf[0] | (1 << 6);
        buf[0] = 0x13;
        msg.addr = 0x09;
        msg.buf = buf;
        msg.len = 2;
        msg.flags = 0;
        ret = i2c_transfer(a, &msg, 1);
        if (ret != 1)
                return -ENODEV;

        return 0;
}
#else
static int kfr2r09_usb0_gadget_i2c_setup(void)
{
        return -ENODEV;
}

static int kfr2r09_serial_i2c_setup(void)
{
        return -ENODEV;
}
#endif

static int kfr2r09_usb0_gadget_setup(void)
{
        int plugged_in;

        gpio_request(GPIO_PTN4, NULL); /* USB_DET */
        gpio_direction_input(GPIO_PTN4);
        plugged_in = gpio_get_value(GPIO_PTN4);
        if (!plugged_in)
                return -ENODEV; /* no cable plugged in */

        if (kfr2r09_usb0_gadget_i2c_setup() != 0)
                return -ENODEV; /* unable to configure using i2c */

        __raw_writew((__raw_readw(PORT_MSELCRB) & ~0xc000) | 0x8000, PORT_MSELCRB);
        gpio_request(GPIO_FN_PDSTATUS, NULL); /* R-standby disables USB clock */
        gpio_request(GPIO_PTV6, NULL); /* USBCLK_ON */
        gpio_direction_output(GPIO_PTV6, 1); /* USBCLK_ON = H */
        msleep(20); /* wait 20ms to let the clock settle */
        clk_enable(clk_get(NULL, "usb0"));
        __raw_writew(0x0600, 0xa40501d4);

        return 0;
}

extern char kfr2r09_sdram_enter_start;
extern char kfr2r09_sdram_enter_end;
extern char kfr2r09_sdram_leave_start;
extern char kfr2r09_sdram_leave_end;

static int __init kfr2r09_devices_setup(void)
{
        struct clk *camera_clk;

        /* register board specific self-refresh code */
        sh_mobile_register_self_refresh(SUSP_SH_STANDBY | SUSP_SH_SF |
                                        SUSP_SH_RSTANDBY,
                                        &kfr2r09_sdram_enter_start,
                                        &kfr2r09_sdram_enter_end,
                                        &kfr2r09_sdram_leave_start,
                                        &kfr2r09_sdram_leave_end);

        regulator_register_always_on(0, "fixed-3.3V", fixed3v3_power_consumers,
                                     ARRAY_SIZE(fixed3v3_power_consumers), 3300000);

        /* enable SCIF1 serial port for YC401 console support */
        gpio_request(GPIO_FN_SCIF1_RXD, NULL);
        gpio_request(GPIO_FN_SCIF1_TXD, NULL);
        kfr2r09_serial_i2c_setup(); /* ECONTMSK(bit6=L10ONEN) set 1 */
        gpio_request(GPIO_PTG3, NULL); /* HPON_ON */
        gpio_direction_output(GPIO_PTG3, 1); /* HPON_ON = H */

        /* setup NOR flash at CS0 */
        __raw_writel(0x36db0400, BSC_CS0BCR);
        __raw_writel(0x00000500, BSC_CS0WCR);

        /* setup NAND flash at CS4 */
        __raw_writel(0x36db0400, BSC_CS4BCR);
        __raw_writel(0x00000500, BSC_CS4WCR);

        /* setup KEYSC pins */
        gpio_request(GPIO_FN_KEYOUT0, NULL);
        gpio_request(GPIO_FN_KEYOUT1, NULL);
        gpio_request(GPIO_FN_KEYOUT2, NULL);
        gpio_request(GPIO_FN_KEYOUT3, NULL);
        gpio_request(GPIO_FN_KEYOUT4_IN6, NULL);
        gpio_request(GPIO_FN_KEYIN0, NULL);
        gpio_request(GPIO_FN_KEYIN1, NULL);
        gpio_request(GPIO_FN_KEYIN2, NULL);
        gpio_request(GPIO_FN_KEYIN3, NULL);
        gpio_request(GPIO_FN_KEYIN4, NULL);
        gpio_request(GPIO_FN_KEYOUT5_IN5, NULL);

        /* setup LCDC pins for SYS panel */
        gpio_request(GPIO_FN_LCDD17, NULL);
        gpio_request(GPIO_FN_LCDD16, NULL);
        gpio_request(GPIO_FN_LCDD15, NULL);
        gpio_request(GPIO_FN_LCDD14, NULL);
        gpio_request(GPIO_FN_LCDD13, NULL);
        gpio_request(GPIO_FN_LCDD12, NULL);
        gpio_request(GPIO_FN_LCDD11, NULL);
        gpio_request(GPIO_FN_LCDD10, NULL);
        gpio_request(GPIO_FN_LCDD9, NULL);
        gpio_request(GPIO_FN_LCDD8, NULL);
        gpio_request(GPIO_FN_LCDD7, NULL);
        gpio_request(GPIO_FN_LCDD6, NULL);
        gpio_request(GPIO_FN_LCDD5, NULL);
        gpio_request(GPIO_FN_LCDD4, NULL);
        gpio_request(GPIO_FN_LCDD3, NULL);
        gpio_request(GPIO_FN_LCDD2, NULL);
        gpio_request(GPIO_FN_LCDD1, NULL);
        gpio_request(GPIO_FN_LCDD0, NULL);
        gpio_request(GPIO_FN_LCDRS, NULL); /* LCD_RS */
        gpio_request(GPIO_FN_LCDCS, NULL); /* LCD_CS/ */
        gpio_request(GPIO_FN_LCDRD, NULL); /* LCD_RD/ */
        gpio_request(GPIO_FN_LCDWR, NULL); /* LCD_WR/ */
        gpio_request(GPIO_FN_LCDVSYN, NULL); /* LCD_VSYNC */
        gpio_request(GPIO_PTE4, NULL); /* LCD_RST/ */
        gpio_direction_output(GPIO_PTE4, 1);
        gpio_request(GPIO_PTF4, NULL); /* PROTECT/ */
        gpio_direction_output(GPIO_PTF4, 1);
        gpio_request(GPIO_PTU0, NULL); /* LEDSTDBY/ */
        gpio_direction_output(GPIO_PTU0, 1);

        /* setup USB function */
        if (kfr2r09_usb0_gadget_setup() == 0)
                platform_device_register(&kfr2r09_usb0_gadget_device);

        /* CEU */
        gpio_request(GPIO_FN_VIO_CKO, NULL);
        gpio_request(GPIO_FN_VIO0_CLK, NULL);
        gpio_request(GPIO_FN_VIO0_VD, NULL);
        gpio_request(GPIO_FN_VIO0_HD, NULL);
        gpio_request(GPIO_FN_VIO0_FLD, NULL);
        gpio_request(GPIO_FN_VIO0_D7, NULL);
        gpio_request(GPIO_FN_VIO0_D6, NULL);
        gpio_request(GPIO_FN_VIO0_D5, NULL);
        gpio_request(GPIO_FN_VIO0_D4, NULL);
        gpio_request(GPIO_FN_VIO0_D3, NULL);
        gpio_request(GPIO_FN_VIO0_D2, NULL);
        gpio_request(GPIO_FN_VIO0_D1, NULL);
        gpio_request(GPIO_FN_VIO0_D0, NULL);

        /* SDHI0 connected to yc304 */
        gpio_request(GPIO_FN_SDHI0CD, NULL);
        gpio_request(GPIO_FN_SDHI0D3, NULL);
        gpio_request(GPIO_FN_SDHI0D2, NULL);
        gpio_request(GPIO_FN_SDHI0D1, NULL);
        gpio_request(GPIO_FN_SDHI0D0, NULL);
        gpio_request(GPIO_FN_SDHI0CMD, NULL);
        gpio_request(GPIO_FN_SDHI0CLK, NULL);

        i2c_register_board_info(0, &kfr2r09_backlight_board_info, 1);

        /* Set camera clock frequency and register and alias for rj54n1. */
        camera_clk = clk_get(NULL, "video_clk");
        if (!IS_ERR(camera_clk)) {
                clk_set_rate(camera_clk,
                             clk_round_rate(camera_clk, CEU_MCLK_FREQ));
                clk_put(camera_clk);
        }
        clk_add_alias(NULL, "1-0050", "video_clk", NULL);

        /* set DRVCRB
         *
         * use 1.8 V for VccQ_VIO
         * use 2.85V for VccQ_SR
         */
        __raw_writew((__raw_readw(DRVCRB) & ~0x0003) | 0x0001, DRVCRB);

        gpiod_add_lookup_table(&rj54n1_gpios);

        i2c_register_board_info(1, &kfr2r09_i2c_camera, 1);

        /* Initialize CEU platform device separately to map memory first */
        device_initialize(&kfr2r09_ceu_device.dev);
        dma_declare_coherent_memory(&kfr2r09_ceu_device.dev,
                        ceu_dma_membase, ceu_dma_membase,
                        CEU_BUFFER_MEMORY_SIZE);

        platform_device_add(&kfr2r09_ceu_device);

        return platform_add_devices(kfr2r09_devices,
                                    ARRAY_SIZE(kfr2r09_devices));
}
device_initcall(kfr2r09_devices_setup);

/* Return the board specific boot mode pin configuration */
static int kfr2r09_mode_pins(void)
{
        /* MD0=1, MD1=1, MD2=0: Clock Mode 3
         * MD3=0: 16-bit Area0 Bus Width
         * MD5=1: Little Endian
         * MD8=1: Test Mode Disabled
         */
        return MODE_PIN0 | MODE_PIN1 | MODE_PIN5 | MODE_PIN8;
}

/* Reserve a portion of memory for CEU buffers */
static void __init kfr2r09_mv_mem_reserve(void)
{
        phys_addr_t phys;
        phys_addr_t size = CEU_BUFFER_MEMORY_SIZE;

        phys = memblock_phys_alloc(size, PAGE_SIZE);
        if (!phys)
                panic("Failed to allocate CEU memory\n");

        memblock_phys_free(phys, size);
        memblock_remove(phys, size);

        ceu_dma_membase = phys;
}

/*
 * The Machine Vector
 */
static struct sh_machine_vector mv_kfr2r09 __initmv = {
        .mv_name                = "kfr2r09",
        .mv_mode_pins           = kfr2r09_mode_pins,
        .mv_mem_reserve         = kfr2r09_mv_mem_reserve,
};