common-smdk.c

socket can driver, for s3c2440 using sja100, enjoy it!

/* linux/arch/arm/plat-s3c24xx/common-smdk.c
 *
 * Copyright (c) 2006 Simtec Electronics
 *	Ben Dooks <[e-mail]>
 *
 * Common code for SMDK2410 and SMDK2440 boards
 *
 * http://www.fluff.org/ben/smdk2440/
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2 as
 * published by the Free Software Foundation.
*
*daihj07@thu
*
*/

#include <linux/kernel.h>
#include <linux/types.h>
#include <linux/interrupt.h>
#include <linux/list.h>
#include <linux/timer.h>
#include <linux/init.h>
#include <linux/sysdev.h>
#include <linux/platform_device.h>

#include <linux/mtd/mtd.h>
#include <linux/mtd/nand.h>
#include <linux/mtd/nand_ecc.h>
#include <linux/mtd/partitions.h>

#include <asm/mach/arch.h>
#include <asm/mach/map.h>
#include <asm/mach/irq.h>

#include <asm/mach-types.h>
#include <asm/hardware.h>
#include <asm/io.h>
#include <asm/irq.h>

#include <asm/arch/regs-gpio.h>
#include <asm/arch/leds-gpio.h>

#include <asm/plat-s3c/nand.h>

#include <asm/plat-s3c24xx/common-smdk.h>
#include <asm/plat-s3c24xx/devs.h>
#include <asm/plat-s3c24xx/pm.h>

#if defined(CONFIG_DM9000) ||defined (CONFIG_DM9000_MODULE)
#include <linux/dm9000.h>
#endif

#include <linux/can/platform/sja1000.h>

/* LED devices */
/*for t3h2440 led daihj*/
static struct s3c24xx_led_platdata smdk_pdata_led4 = {
	.gpio		= S3C2410_GPB5,
	.flags		= S3C24XX_LEDF_ACTLOW | S3C24XX_LEDF_TRISTATE,
	.name		= "led4",
	.def_trigger	= "timer",
};

static struct s3c24xx_led_platdata smdk_pdata_led5 = {
	.gpio		= S3C2410_GPB6,
	.flags		= S3C24XX_LEDF_ACTLOW | S3C24XX_LEDF_TRISTATE,
	.name		= "led5",
	.def_trigger	= "nand-disk",
};

static struct s3c24xx_led_platdata smdk_pdata_led6 = {
	.gpio		= S3C2410_GPB7,
	.flags		= S3C24XX_LEDF_ACTLOW | S3C24XX_LEDF_TRISTATE,
	.name		= "led6",
};

static struct s3c24xx_led_platdata smdk_pdata_led7 = {
	.gpio		= S3C2410_GPB8,
	.flags		= S3C24XX_LEDF_ACTLOW | S3C24XX_LEDF_TRISTATE,
	.name		= "led7",
};

static struct platform_device smdk_led4 = {
	.name		= "s3c24xx_led",
	.id		= 0,
	.dev		= {
		.platform_data = &smdk_pdata_led4,
	},
};

static struct platform_device smdk_led5 = {
	.name		= "s3c24xx_led",
	.id		= 1,
	.dev		= {
		.platform_data = &smdk_pdata_led5,
	},
};

static struct platform_device smdk_led6 = {
	.name		= "s3c24xx_led",
	.id		= 2,
	.dev		= {
		.platform_data = &smdk_pdata_led6,
	},
};

static struct platform_device smdk_led7 = {
	.name		= "s3c24xx_led",
	.id		= 3,
	.dev		= {
		.platform_data = &smdk_pdata_led7,
	},
};

/* NAND parititon from 2.4.18-swl5 */
/*static struct mtd_partition smdk_default_nand_part[] = {
	[0] = {
		.name	= "Boot Agent",
		.size	= SZ_16K,
		.offset	= 0,
	},
	[1] = {
		.name	= "S3C2410 flash partition 1",
		.offset = 0,
		.size	= SZ_2M,
	},
	[2] = {
		.name	= "S3C2410 flash partition 2",
		.offset = SZ_4M,
		.size	= SZ_4M,
	},
	[3] = {
		.name	= "S3C2410 flash partition 3",
		.offset	= SZ_8M,
		.size	= SZ_2M,
	},
	[4] = {
		.name	= "S3C2410 flash partition 4",
		.offset = SZ_1M * 10,
		.size	= SZ_4M,
	},
	[5] = {
		.name	= "S3C2410 flash partition 5",
		.offset	= SZ_1M * 14,
		.size	= SZ_1M * 10,
	},
	[6] = {
		.name	= "S3C2410 flash partition 6",
		.offset	= SZ_1M * 24,
		.size	= SZ_1M * 24,
	},
	[7] = {
		.name	= "S3C2410 flash partition 7",
		.offset = SZ_1M * 48,
		.size	= SZ_16M,
	}
};	*/
/*NAND parititon for T3H2440, 4M nand flash*/
static struct mtd_partition t3h2440_nand_part[] = {
	[0] = {
		.name	= "bios",
		.offset	= 0,	
		.size	= SZ_1M,
	},
	[1] = {
		.name	= "kernel",
		.offset = SZ_1M,
		.size	= SZ_1M*3,
	},
	[2] = {
		.name	= "rootfs",
		.offset = SZ_4M,
		.size	= SZ_4M*10,	
	},
	[3] = {
		.name	= "ext",
		.offset	= SZ_4M*11,
		.size	= SZ_4M*5,
	}
};
static struct s3c2410_nand_set smdk_nand_sets[] = {
	[0] = {
		.name		= "NAND",
		.nr_chips	= 1,
		.nr_partitions	= ARRAY_SIZE(t3h2440_nand_part),
		.partitions	= t3h2440_nand_part,
	},
};

/* choose a set of timings which should suit most 512Mbit
 * chips and beyond.
*/
/*
static struct s3c2410_platform_nand smdk_nand_info = {
	.tacls		= 20,
	.twrph0		= 60,
	.twrph1		= 20,
	.nr_sets	= ARRAY_SIZE(smdk_nand_sets),
	.sets		= smdk_nand_sets,
};
*/
//daihj
static struct s3c2410_platform_nand smdk_nand_info = {
	.tacls		= 0,
	.twrph0		= 30,
	.twrph1		= 0,
	.nr_sets	= ARRAY_SIZE(smdk_nand_sets),
	.sets		= smdk_nand_sets,
};
/* devices we initialise */

/* DM9000 	reference linux/arch/arm/mach-s3c2410/mach-bast.c	*/
#if defined (CONFIG_DM9000) ||defined(CONFIG_DM9000_MODULE)
#include <linux/dm9000.h> //daihj

#ifndef BAST_PA_DM9000
#define  BAST_PA_DM9000 0
#endif
#ifndef IRQ_DM9000
#define  IRQ_DM9000 IRQ_EINT13
#endif
static struct resource t3h_dm9k_resource[] = {
	[0] = {
		.start = S3C2410_CS5 + BAST_PA_DM9000,
		.end   = S3C2410_CS5 + BAST_PA_DM9000 + 3,
		.flags = IORESOURCE_MEM,
	},
	[1] = {
		.start = S3C2410_CS5 + BAST_PA_DM9000 + 0x4,
		.end   = S3C2410_CS5 + BAST_PA_DM9000 + 0x4 + 0x3,
		.flags = IORESOURCE_MEM,
	},
	[2] = {
		.start = IRQ_DM9000,
		.end   = IRQ_DM9000,
		.flags = IORESOURCE_IRQ ,	//?	| IRQF_TRIGGER_HIGH	//dm9000a trigger level: high active by default, but use the rising trigger in driver,daihj07
	}

};

/* for the moment we limit ourselves to 16bit IO until some
 * better IO routines can be written and tested
*/

static struct dm9000_plat_data t3h_dm9k_platdata = {
	.flags		= DM9000_PLATF_16BITONLY,
};

struct platform_device t3h_device_dm9k = {		//not static
	.name		= "dm9000",
	.id		= 0,
	.num_resources	= ARRAY_SIZE(t3h_dm9k_resource),
	.resource	= t3h_dm9k_resource,
	.dev		= {
		.platform_data = &t3h_dm9k_platdata,
	}
};
#endif  /*config dm9000*/

/* sja1000 support, 
*	nGCS4:CAN_CS
*	EINTCAN:EINT0/GPF0
*	8BIT
*/
#if defined (CONFIG_CAN_SJA1000_PLATFORM) ||defined(CONFIG_CAN_SJA1000_PLATFORM_MODULE)
//#include <linux/dm9000.h> //daihj

#ifndef IRQ_SJA1000
#define  IRQ_SJA1000 IRQ_EINT0
#endif
static struct resource t3h_SJA1000_resource[] = {
	[0] = {
		.start = S3C2410_CS4 + 0,	/*for  addr3 == high and addr2 == low*/
		.end   = S3C2410_CS4+ 0x10,
		.flags = IORESOURCE_MEM,
	},
	[1] = {
		.start = IRQ_SJA1000,
		.end   = IRQ_SJA1000,
		.flags = IORESOURCE_IRQ| IRQF_TRIGGER_FALLING,	//
	},

};

/* 
 * now use the data from PIPCAN
*/
#define PIPCAN_CAN_CLOCK  (16000000 / 2)	/*intel mode, CDR CD.2~CD.0 fosc/2 */
#define PIPCAN_OCR        (OCR_TX1_PUSHPULL)
#define PIPCAN_CDR        (CDR_CBP | CDR_CLK_OFF)	/*CBP==1, RX1½ÓÈëVss	CLKOUT off*/

static struct sja1000_platform_data t3h_SJA1000_platdata = {
	.clock	= 	PIPCAN_CAN_CLOCK,
	.ocr	=	PIPCAN_OCR,
	.cdr	=	PIPCAN_CDR,
};

struct platform_device t3h_device_SJA1000 = {		//not static
	.name		= "sja1000_platform",
	.id		= 0,
	.num_resources	= ARRAY_SIZE(t3h_SJA1000_resource),
	.resource	= t3h_SJA1000_resource,
	.dev		= {
		.platform_data = &t3h_SJA1000_platdata,	//?
	}
};
#endif  /*config (CONFIG_CAN_SJA1000_PLATFORM) ||defined(CONFIG_CAN_SJA1000_PLATFORM_MODULE)*/


static struct platform_device __initdata *smdk_devs[] = {
	&s3c_device_nand,
	&smdk_led4,
	&smdk_led5,
	&smdk_led6,
	&smdk_led7,
#if defined (CONFIG_DM9000) ||defined (CONFIG_DM9000_MODULE)
	&t3h_device_dm9k,
#endif
#if defined (CONFIG_CAN_SJA1000_PLATFORM) ||defined(CONFIG_CAN_SJA1000_PLATFORM_MODULE)
	&t3h_device_SJA1000,
#endif
};

void __init smdk_machine_init(void)
{
	/* Configure the LEDs (even if we have no LED support)*/

	s3c2410_gpio_cfgpin(S3C2410_GPB5, S3C2410_GPB5_OUTP);
	s3c2410_gpio_cfgpin(S3C2410_GPB6, S3C2410_GPB6_OUTP);
	s3c2410_gpio_cfgpin(S3C2410_GPB7, S3C2410_GPB7_OUTP);
	s3c2410_gpio_cfgpin(S3C2410_GPB8, S3C2410_GPB8_OUTP);

	s3c2410_gpio_setpin(S3C2410_GPB5, 1);
	s3c2410_gpio_setpin(S3C2410_GPB6, 1);
	s3c2410_gpio_setpin(S3C2410_GPB7, 1);
	s3c2410_gpio_setpin(S3C2410_GPB8, 1);

	if (machine_is_smdk2443())
		smdk_nand_info.twrph0 = 50;

	s3c_device_nand.dev.platform_data = &smdk_nand_info;

	platform_add_devices(smdk_devs, ARRAY_SIZE(smdk_devs));

	s3c2410_pm_init();
}