/*
 * sh7372 processor support
 *
 * Copyright (C) 2010  Magnus Damm
 * Copyright (C) 2008  Yoshihiro Shimoda
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; version 2 of the License.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
 */
#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/interrupt.h>
#include <linux/irq.h>
#include <linux/platform_device.h>
#include <linux/delay.h>
#include <linux/input.h>
#include <linux/io.h>
#include <linux/serial_sci.h>
#include <linux/sh_dma.h>
#include <linux/sh_intc.h>
#include <linux/sh_timer.h>
#include <mach/hardware.h>
#include <mach/sh7372.h>
#include <asm/mach-types.h>
#include <asm/mach/arch.h>

/* SCIFA0 */
static struct plat_sci_port scif0_platform_data = {
	.mapbase	= 0xe6c40000,
	.flags		= UPF_BOOT_AUTOCONF,
	.type		= PORT_SCIFA,
	.irqs		= { evt2irq(0x0c00), evt2irq(0x0c00),
			    evt2irq(0x0c00), evt2irq(0x0c00) },
};

static struct platform_device scif0_device = {
	.name		= "sh-sci",
	.id		= 0,
	.dev		= {
		.platform_data	= &scif0_platform_data,
	},
};

/* SCIFA1 */
static struct plat_sci_port scif1_platform_data = {
	.mapbase	= 0xe6c50000,
	.flags		= UPF_BOOT_AUTOCONF,
	.type		= PORT_SCIFA,
	.irqs		= { evt2irq(0x0c20), evt2irq(0x0c20),
			    evt2irq(0x0c20), evt2irq(0x0c20) },
};

static struct platform_device scif1_device = {
	.name		= "sh-sci",
	.id		= 1,
	.dev		= {
		.platform_data	= &scif1_platform_data,
	},
};

/* SCIFA2 */
static struct plat_sci_port scif2_platform_data = {
	.mapbase	= 0xe6c60000,
	.flags		= UPF_BOOT_AUTOCONF,
	.type		= PORT_SCIFA,
	.irqs		= { evt2irq(0x0c40), evt2irq(0x0c40),
			    evt2irq(0x0c40), evt2irq(0x0c40) },
};

static struct platform_device scif2_device = {
	.name		= "sh-sci",
	.id		= 2,
	.dev		= {
		.platform_data	= &scif2_platform_data,
	},
};

/* SCIFA3 */
static struct plat_sci_port scif3_platform_data = {
	.mapbase	= 0xe6c70000,
	.flags		= UPF_BOOT_AUTOCONF,
	.type		= PORT_SCIFA,
	.irqs		= { evt2irq(0x0c60), evt2irq(0x0c60),
			    evt2irq(0x0c60), evt2irq(0x0c60) },
};

static struct platform_device scif3_device = {
	.name		= "sh-sci",
	.id		= 3,
	.dev		= {
		.platform_data	= &scif3_platform_data,
	},
};

/* SCIFA4 */
static struct plat_sci_port scif4_platform_data = {
	.mapbase	= 0xe6c80000,
	.flags		= UPF_BOOT_AUTOCONF,
	.type		= PORT_SCIFA,
	.irqs		= { evt2irq(0x0d20), evt2irq(0x0d20),
			    evt2irq(0x0d20), evt2irq(0x0d20) },
};

static struct platform_device scif4_device = {
	.name		= "sh-sci",
	.id		= 4,
	.dev		= {
		.platform_data	= &scif4_platform_data,
	},
};

/* SCIFA5 */
static struct plat_sci_port scif5_platform_data = {
	.mapbase	= 0xe6cb0000,
	.flags		= UPF_BOOT_AUTOCONF,
	.type		= PORT_SCIFA,
	.irqs		= { evt2irq(0x0d40), evt2irq(0x0d40),
			    evt2irq(0x0d40), evt2irq(0x0d40) },
};

static struct platform_device scif5_device = {
	.name		= "sh-sci",
	.id		= 5,
	.dev		= {
		.platform_data	= &scif5_platform_data,
	},
};

/* SCIFB */
static struct plat_sci_port scif6_platform_data = {
	.mapbase	= 0xe6c30000,
	.flags		= UPF_BOOT_AUTOCONF,
	.type		= PORT_SCIFB,
	.irqs		= { evt2irq(0x0d60), evt2irq(0x0d60),
			    evt2irq(0x0d60), evt2irq(0x0d60) },
};

static struct platform_device scif6_device = {
	.name		= "sh-sci",
	.id		= 6,
	.dev		= {
		.platform_data	= &scif6_platform_data,
	},
};

/* CMT */
static struct sh_timer_config cmt10_platform_data = {
	.name = "CMT10",
	.channel_offset = 0x10,
	.timer_bit = 0,
	.clk = "cmt1",
	.clockevent_rating = 125,
	.clocksource_rating = 125,
};

static struct resource cmt10_resources[] = {
	[0] = {
		.name	= "CMT10",
		.start	= 0xe6138010,
		.end	= 0xe613801b,
		.flags	= IORESOURCE_MEM,
	},
	[1] = {
		.start	= evt2irq(0x0b00), /* CMT1_CMT10 */
		.flags	= IORESOURCE_IRQ,
	},
};

static struct platform_device cmt10_device = {
	.name		= "sh_cmt",
	.id		= 10,
	.dev = {
		.platform_data	= &cmt10_platform_data,
	},
	.resource	= cmt10_resources,
	.num_resources	= ARRAY_SIZE(cmt10_resources),
};

/* I2C */
static struct resource iic0_resources[] = {
	[0] = {
		.name	= "IIC0",
		.start  = 0xFFF20000,
		.end    = 0xFFF20425 - 1,
		.flags  = IORESOURCE_MEM,
	},
	[1] = {
		.start  = intcs_evt2irq(0xe00), /* IIC0_ALI0 */
		.end    = intcs_evt2irq(0xe60), /* IIC0_DTEI0 */
		.flags  = IORESOURCE_IRQ,
	},
};

static struct platform_device iic0_device = {
	.name           = "i2c-sh_mobile",
	.id             = 0, /* "i2c0" clock */
	.num_resources  = ARRAY_SIZE(iic0_resources),
	.resource       = iic0_resources,
};

static struct resource iic1_resources[] = {
	[0] = {
		.name	= "IIC1",
		.start  = 0xE6C20000,
		.end    = 0xE6C20425 - 1,
		.flags  = IORESOURCE_MEM,
	},
	[1] = {
		.start  = evt2irq(0x780), /* IIC1_ALI1 */
		.end    = evt2irq(0x7e0), /* IIC1_DTEI1 */
		.flags  = IORESOURCE_IRQ,
	},
};

static struct platform_device iic1_device = {
	.name           = "i2c-sh_mobile",
	.id             = 1, /* "i2c1" clock */
	.num_resources  = ARRAY_SIZE(iic1_resources),
	.resource       = iic1_resources,
};

/* DMA */
/* Transmit sizes and respective CHCR register values */
enum {
	XMIT_SZ_8BIT		= 0,
	XMIT_SZ_16BIT		= 1,
	XMIT_SZ_32BIT		= 2,
	XMIT_SZ_64BIT		= 7,
	XMIT_SZ_128BIT		= 3,
	XMIT_SZ_256BIT		= 4,
	XMIT_SZ_512BIT		= 5,
};

/* log2(size / 8) - used to calculate number of transfers */
#define TS_SHIFT {			\
	[XMIT_SZ_8BIT]		= 0,	\
	[XMIT_SZ_16BIT]		= 1,	\
	[XMIT_SZ_32BIT]		= 2,	\
	[XMIT_SZ_64BIT]		= 3,	\
	[XMIT_SZ_128BIT]	= 4,	\
	[XMIT_SZ_256BIT]	= 5,	\
	[XMIT_SZ_512BIT]	= 6,	\
}

#define TS_INDEX2VAL(i) ((((i) & 3) << 3) | \
			 (((i) & 0xc) << (20 - 2)))

static const struct sh_dmae_slave_config sh7372_dmae_slaves[] = {
	{
		.slave_id	= SHDMA_SLAVE_SDHI0_TX,
		.addr		= 0xe6850030,
		.chcr		= DM_FIX | SM_INC | 0x800 | TS_INDEX2VAL(XMIT_SZ_16BIT),
		.mid_rid	= 0xc1,
	}, {
		.slave_id	= SHDMA_SLAVE_SDHI0_RX,
		.addr		= 0xe6850030,
		.chcr		= DM_INC | SM_FIX | 0x800 | TS_INDEX2VAL(XMIT_SZ_16BIT),
		.mid_rid	= 0xc2,
	}, {
		.slave_id	= SHDMA_SLAVE_SDHI1_TX,
		.addr		= 0xe6860030,
		.chcr		= DM_FIX | SM_INC | 0x800 | TS_INDEX2VAL(XMIT_SZ_16BIT),
		.mid_rid	= 0xc9,
	}, {
		.slave_id	= SHDMA_SLAVE_SDHI1_RX,
		.addr		= 0xe6860030,
		.chcr		= DM_INC | SM_FIX | 0x800 | TS_INDEX2VAL(XMIT_SZ_16BIT),
		.mid_rid	= 0xca,
	}, {
		.slave_id	= SHDMA_SLAVE_SDHI2_TX,
		.addr		= 0xe6870030,
		.chcr		= DM_FIX | SM_INC | 0x800 | TS_INDEX2VAL(XMIT_SZ_16BIT),
		.mid_rid	= 0xcd,
	}, {
		.slave_id	= SHDMA_SLAVE_SDHI2_RX,
		.addr		= 0xe6870030,
		.chcr		= DM_INC | SM_FIX | 0x800 | TS_INDEX2VAL(XMIT_SZ_16BIT),
		.mid_rid	= 0xce,
	},
};

static const struct sh_dmae_channel sh7372_dmae_channels[] = {
	{
		.offset = 0,
		.dmars = 0,
		.dmars_bit = 0,
	}, {
		.offset = 0x10,
		.dmars = 0,
		.dmars_bit = 8,
	}, {
		.offset = 0x20,
		.dmars = 4,
		.dmars_bit = 0,
	}, {
		.offset = 0x30,
		.dmars = 4,
		.dmars_bit = 8,
	}, {
		.offset = 0x50,
		.dmars = 8,
		.dmars_bit = 0,
	}, {
		.offset = 0x60,
		.dmars = 8,
		.dmars_bit = 8,
	}
};

static const unsigned int ts_shift[] = TS_SHIFT;

static struct sh_dmae_pdata dma_platform_data = {
	.slave		= sh7372_dmae_slaves,
	.slave_num	= ARRAY_SIZE(sh7372_dmae_slaves),
	.channel	= sh7372_dmae_channels,
	.channel_num	= ARRAY_SIZE(sh7372_dmae_channels),
	.ts_low_shift	= 3,
	.ts_low_mask	= 0x18,
	.ts_high_shift	= (20 - 2),	/* 2 bits for shifted low TS */
	.ts_high_mask	= 0x00300000,
	.ts_shift	= ts_shift,
	.ts_shift_num	= ARRAY_SIZE(ts_shift),
	.dmaor_init	= DMAOR_DME,
};

/* Resource order important! */
static struct resource sh7372_dmae0_resources[] = {
	{
		/* Channel registers and DMAOR */
		.start	= 0xfe008020,
		.end	= 0xfe00808f,
		.flags	= IORESOURCE_MEM,
	},
	{
		/* DMARSx */
		.start	= 0xfe009000,
		.end	= 0xfe00900b,
		.flags	= IORESOURCE_MEM,
	},
	{
		/* DMA error IRQ */
		.start	= 246,
		.end	= 246,
		.flags	= IORESOURCE_IRQ,
	},
	{
		/* IRQ for channels 0-5 */
		.start	= 240,
		.end	= 245,
		.flags	= IORESOURCE_IRQ,
	},
};

/* Resource order important! */
static struct resource sh7372_dmae1_resources[] = {
	{
		/* Channel registers and DMAOR */
		.start	= 0xfe018020,
		.end	= 0xfe01808f,
		.flags	= IORESOURCE_MEM,
	},
	{
		/* DMARSx */
		.start	= 0xfe019000,
		.end	= 0xfe01900b,
		.flags	= IORESOURCE_MEM,
	},
	{
		/* DMA error IRQ */
		.start	= 254,
		.end	= 254,
		.flags	= IORESOURCE_IRQ,
	},
	{
		/* IRQ for channels 0-5 */
		.start	= 248,
		.end	= 253,
		.flags	= IORESOURCE_IRQ,
	},
};

/* Resource order important! */
static struct resource sh7372_dmae2_resources[] = {
	{
		/* Channel registers and DMAOR */
		.start	= 0xfe028020,
		.end	= 0xfe02808f,
		.flags	= IORESOURCE_MEM,
	},
	{
		/* DMARSx */
		.start	= 0xfe029000,
		.end	= 0xfe02900b,
		.flags	= IORESOURCE_MEM,
	},
	{
		/* DMA error IRQ */
		.start	= 262,
		.end	= 262,
		.flags	= IORESOURCE_IRQ,
	},
	{
		/* IRQ for channels 0-5 */
		.start	= 256,
		.end	= 261,
		.flags	= IORESOURCE_IRQ,
	},
};

static struct platform_device dma0_device = {
	.name		= "sh-dma-engine",
	.id		= 0,
	.resource	= sh7372_dmae0_resources,
	.num_resources	= ARRAY_SIZE(sh7372_dmae0_resources),
	.dev		= {
		.platform_data	= &dma_platform_data,
	},
};

static struct platform_device dma1_device = {
	.name		= "sh-dma-engine",
	.id		= 1,
	.resource	= sh7372_dmae1_resources,
	.num_resources	= ARRAY_SIZE(sh7372_dmae1_resources),
	.dev		= {
		.platform_data	= &dma_platform_data,
	},
};

static struct platform_device dma2_device = {
	.name		= "sh-dma-engine",
	.id		= 2,
	.resource	= sh7372_dmae2_resources,
	.num_resources	= ARRAY_SIZE(sh7372_dmae2_resources),
	.dev		= {
		.platform_data	= &dma_platform_data,
	},
};

static struct platform_device *sh7372_early_devices[] __initdata = {
	&scif0_device,
	&scif1_device,
	&scif2_device,
	&scif3_device,
	&scif4_device,
	&scif5_device,
	&scif6_device,
	&cmt10_device,
	&iic0_device,
	&iic1_device,
	&dma0_device,
	&dma1_device,
	&dma2_device,
};

void __init sh7372_add_standard_devices(void)
{
	platform_add_devices(sh7372_early_devices,
			    ARRAY_SIZE(sh7372_early_devices));
}

void __init sh7372_add_early_devices(void)
{
	early_platform_add_devices(sh7372_early_devices,
				   ARRAY_SIZE(sh7372_early_devices));
}