setup.c

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/*
 * Renesas Technology Sales RTS7751R2D Support.
 *
 * Copyright (C) 2002 - 2006 Atom Create Engineering Co., Ltd.
 * Copyright (C) 2004 - 2007 Paul Mundt
 *
 * 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/platform_device.h>
#include <linux/mtd/mtd.h>
#include <linux/mtd/partitions.h>
#include <linux/mtd/physmap.h>
#include <linux/ata_platform.h>
#include <linux/sm501.h>
#include <linux/sm501-regs.h>
#include <linux/pm.h>
#include <linux/fb.h>
#include <linux/spi/spi.h>
#include <linux/spi/spi_bitbang.h>
#include <asm/machvec.h>
#include <mach/r2d.h>
#include <asm/io.h>
#include <asm/io_trapped.h>
#include <asm/spi.h>

static struct resource cf_ide_resources[] = {
    [0] = {
        .start  = PA_AREA5_IO + 0x1000,
        .end    = PA_AREA5_IO + 0x1000 + 0x10 - 0x2,
        .flags  = IORESOURCE_MEM,
    },
    [1] = {
        .start  = PA_AREA5_IO + 0x80c,
        .end    = PA_AREA5_IO + 0x80c,
        .flags  = IORESOURCE_MEM,
    },
#ifndef CONFIG_RTS7751R2D_1 /* For R2D-1 polling is preferred */
    [2] = {
        .start  = IRQ_CF_IDE,
        .flags  = IORESOURCE_IRQ,
    },
#endif
};

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 spi_board_info spi_bus[] = {
    {
        .modalias   = "rtc-r9701",
        .max_speed_hz   = 1000000,
        .mode       = SPI_MODE_3,
    },
};

static void r2d_chip_select(struct sh_spi_info *spi, int cs, int state)
{
    BUG_ON(cs != 0);  /* Single Epson RTC-9701JE attached on CS0 */
    __raw_writew(state == BITBANG_CS_ACTIVE, PA_RTCCE);
}

static struct sh_spi_info spi_info = {
    .num_chipselect = 1,
    .chip_select = r2d_chip_select,
};

static struct resource spi_sh_sci_resources[] = {
    {
        .start  = 0xffe00000,
        .end    = 0xffe0001f,
        .flags  = IORESOURCE_MEM,
    },
};

static struct platform_device spi_sh_sci_device  = {
    .name       = "spi_sh_sci",
    .id     = -1,
    .num_resources  = ARRAY_SIZE(spi_sh_sci_resources),
    .resource   = spi_sh_sci_resources,
    .dev    = {
        .platform_data  = &spi_info,
    },
};

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

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

static struct resource sm501_resources[] = {
    [0] = {
        .start  = 0x10000000,
        .end    = 0x13e00000 - 1,
        .flags  = IORESOURCE_MEM,
    },
    [1] = {
        .start  = 0x13e00000,
        .end    = 0x13ffffff,
        .flags  = IORESOURCE_MEM,
    },
    [2] = {
        .start  = IRQ_VOYAGER,
        .flags  = IORESOURCE_IRQ,
    },
};

static struct fb_videomode sm501_default_mode = {
    .pixclock   = 35714,
    .xres       = 640,
    .yres       = 480,
    .left_margin    = 105,
    .right_margin   = 50,
    .upper_margin   = 35,
    .lower_margin   = 0,
    .hsync_len  = 96,
    .vsync_len  = 2,
    .sync = FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
};

static struct sm501_platdata_fbsub sm501_pdata_fbsub_pnl = {
    .def_bpp    = 16,
    .def_mode   = &sm501_default_mode,
    .flags      = SM501FB_FLAG_USE_INIT_MODE |
              SM501FB_FLAG_USE_HWCURSOR |
              SM501FB_FLAG_USE_HWACCEL |
              SM501FB_FLAG_DISABLE_AT_EXIT,
};

static struct sm501_platdata_fbsub sm501_pdata_fbsub_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,
    .flags      = SM501_FBPD_SWAP_FB_ENDIAN,
};

static struct sm501_initdata sm501_initdata = {
    .devices    = SM501_USE_USB_HOST | SM501_USE_UART0,
};

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 mtd_partition r2d_partitions[] = {
    {
        .name       = "U-Boot",
        .offset     = 0x00000000,
        .size       = 0x00040000,
        .mask_flags = MTD_WRITEABLE,
    }, {
        .name       = "Environment",
        .offset     = MTDPART_OFS_NXTBLK,
        .size       = 0x00040000,
        .mask_flags = MTD_WRITEABLE,
    }, {
        .name       = "Kernel",
        .offset     = MTDPART_OFS_NXTBLK,
        .size       = 0x001c0000,
    }, {
        .name       = "Flash_FS",
        .offset     = MTDPART_OFS_NXTBLK,
        .size       = MTDPART_SIZ_FULL,
    }
};

static struct physmap_flash_data flash_data = {
    .width      = 2,
    .nr_parts   = ARRAY_SIZE(r2d_partitions),
    .parts      = r2d_partitions,
};

static struct resource flash_resource = {
    .start      = 0x00000000,
    .end        = 0x02000000,
    .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,
    },
};

static struct platform_device *rts7751r2d_devices[] __initdata = {
    &sm501_device,
    &heartbeat_device,
    &spi_sh_sci_device,
};

/*
 * The CF is connected with 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 rts7751r2d_devices_setup(void)
{
    if (register_trapped_io(&cf_trapped_io) == 0)
        platform_device_register(&cf_ide_device);

    if (mach_is_r2d_plus())
        platform_device_register(&flash_device);

    spi_register_board_info(spi_bus, ARRAY_SIZE(spi_bus));

    return platform_add_devices(rts7751r2d_devices,
                    ARRAY_SIZE(rts7751r2d_devices));
}
device_initcall(rts7751r2d_devices_setup);

static void rts7751r2d_power_off(void)
{
    __raw_writew(0x0001, PA_POWOFF);
}

/*
 * Initialize the board
 */
static void __init rts7751r2d_setup(char **cmdline_p)
{
    void __iomem *sm501_reg;
    u16 ver = __raw_readw(PA_VERREG);

    printk(KERN_INFO "Renesas Technology Sales RTS7751R2D support.\n");

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

    __raw_writew(0x0000, PA_OUTPORT);
    pm_power_off = rts7751r2d_power_off;

    /* sm501 dram configuration:
     * ColSizeX = 11 - External Memory Column Size: 256 words.
     * APX = 1 - External Memory Active to Pre-Charge Delay: 7 clocks.
     * RstX = 1 - External Memory Reset: Normal.
     * Rfsh = 1 - Local Memory Refresh to Command Delay: 12 clocks.
     * BwC =  1 - Local Memory Block Write Cycle Time: 2 clocks.
     * BwP =  1 - Local Memory Block Write to Pre-Charge Delay: 1 clock.
     * AP = 1 - Internal Memory Active to Pre-Charge Delay: 7 clocks.
     * Rst = 1 - Internal Memory Reset: Normal.
     * RA = 1 - Internal Memory Remain in Active State: Do not remain.
     */

    sm501_reg = (void __iomem *)0xb3e00000 + SM501_DRAM_CONTROL;
    writel(readl(sm501_reg) | 0x00f107c0, sm501_reg);
}

/*
 * The Machine Vector
 */
static struct sh_machine_vector mv_rts7751r2d __initmv = {
    .mv_name        = "RTS7751R2D",
    .mv_setup       = rts7751r2d_setup,
    .mv_init_irq        = init_rts7751r2d_IRQ,
    .mv_irq_demux       = rts7751r2d_irq_demux,
};