linux-vybrid_public/arch/mips/alchemy/devboards/db1000.c

/*
 * DBAu1000/1500/1100 board support
 *
 * Copyright 2000, 2008 MontaVista Software Inc.
 * Author: MontaVista Software, Inc. <source@mvista.com>
 *
 * 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; either version 2 of the License, or
 * (at your option) any later version.
 *
 * 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/dma-mapping.h>
#include <linux/gpio.h>
#include <linux/init.h>
#include <linux/interrupt.h>
#include <linux/platform_device.h>
#include <linux/pm.h>
#include <asm/mach-au1x00/au1000.h>
#include <asm/mach-au1x00/au1000_dma.h>
#include <asm/mach-db1x00/bcsr.h>
#include <asm/reboot.h>
#include <prom.h>
#include "platform.h"

#define F_SWAPPED (bcsr_read(BCSR_STATUS) & BCSR_STATUS_DB1000_SWAPBOOT)

struct pci_dev;

static const char *board_type_str(void)
{
	switch (BCSR_WHOAMI_BOARD(bcsr_read(BCSR_WHOAMI))) {
	case BCSR_WHOAMI_DB1000:
		return "DB1000";
	case BCSR_WHOAMI_DB1500:
		return "DB1500";
	case BCSR_WHOAMI_DB1100:
		return "DB1100";
	default:
		return "(unknown)";
	}
}

const char *get_system_type(void)
{
	return board_type_str();
}

void __init board_setup(void)
{
	/* initialize board register space */
	bcsr_init(DB1000_BCSR_PHYS_ADDR,
		  DB1000_BCSR_PHYS_ADDR + DB1000_BCSR_HEXLED_OFS);

	printk(KERN_INFO "AMD Alchemy %s Board\n", board_type_str());

#if defined(CONFIG_IRDA) && defined(CONFIG_AU1000_FIR)
	{
		u32 pin_func;

		/* Set IRFIRSEL instead of GPIO15 */
		pin_func = au_readl(SYS_PINFUNC) | SYS_PF_IRF;
		au_writel(pin_func, SYS_PINFUNC);
		/* Power off until the driver is in use */
		bcsr_mod(BCSR_RESETS, BCSR_RESETS_IRDA_MODE_MASK,
			 BCSR_RESETS_IRDA_MODE_OFF);
	}
#endif
	bcsr_write(BCSR_PCMCIA, 0);	/* turn off PCMCIA power */

	/* Enable GPIO[31:0] inputs */
	alchemy_gpio1_input_enable();
}


static int db1500_map_pci_irq(const struct pci_dev *d, u8 slot, u8 pin)
{
	if ((slot < 12) || (slot > 13) || pin == 0)
		return -1;
	if (slot == 12)
		return (pin == 1) ? AU1500_PCI_INTA : 0xff;
	if (slot == 13) {
		switch (pin) {
		case 1: return AU1500_PCI_INTA;
		case 2: return AU1500_PCI_INTB;
		case 3: return AU1500_PCI_INTC;
		case 4: return AU1500_PCI_INTD;
		}
	}
	return -1;
}

static struct resource alchemy_pci_host_res[] = {
	[0] = {
		.start	= AU1500_PCI_PHYS_ADDR,
		.end	= AU1500_PCI_PHYS_ADDR + 0xfff,
		.flags	= IORESOURCE_MEM,
	},
};

static struct alchemy_pci_platdata db1500_pci_pd = {
	.board_map_irq	= db1500_map_pci_irq,
};

static struct platform_device db1500_pci_host_dev = {
	.dev.platform_data = &db1500_pci_pd,
	.name		= "alchemy-pci",
	.id		= 0,
	.num_resources	= ARRAY_SIZE(alchemy_pci_host_res),
	.resource	= alchemy_pci_host_res,
};

static int __init db1500_pci_init(void)
{
	if (BCSR_WHOAMI_BOARD(bcsr_read(BCSR_WHOAMI)) == BCSR_WHOAMI_DB1500)
		return platform_device_register(&db1500_pci_host_dev);
	return 0;
}
/* must be arch_initcall; MIPS PCI scans busses in a subsys_initcall */
arch_initcall(db1500_pci_init);


static struct resource au1100_lcd_resources[] = {
	[0] = {
		.start	= AU1100_LCD_PHYS_ADDR,
		.end	= AU1100_LCD_PHYS_ADDR + 0x800 - 1,
		.flags	= IORESOURCE_MEM,
	},
	[1] = {
		.start	= AU1100_LCD_INT,
		.end	= AU1100_LCD_INT,
		.flags	= IORESOURCE_IRQ,
	}
};

static u64 au1100_lcd_dmamask = DMA_BIT_MASK(32);

static struct platform_device au1100_lcd_device = {
	.name		= "au1100-lcd",
	.id		= 0,
	.dev = {
		.dma_mask		= &au1100_lcd_dmamask,
		.coherent_dma_mask	= DMA_BIT_MASK(32),
	},
	.num_resources	= ARRAY_SIZE(au1100_lcd_resources),
	.resource	= au1100_lcd_resources,
};

static struct resource alchemy_ac97c_res[] = {
	[0] = {
		.start	= AU1000_AC97_PHYS_ADDR,
		.end	= AU1000_AC97_PHYS_ADDR + 0xfff,
		.flags	= IORESOURCE_MEM,
	},
	[1] = {
		.start	= DMA_ID_AC97C_TX,
		.end	= DMA_ID_AC97C_TX,
		.flags	= IORESOURCE_DMA,
	},
	[2] = {
		.start	= DMA_ID_AC97C_RX,
		.end	= DMA_ID_AC97C_RX,
		.flags	= IORESOURCE_DMA,
	},
};

static struct platform_device alchemy_ac97c_dev = {
	.name		= "alchemy-ac97c",
	.id		= -1,
	.resource	= alchemy_ac97c_res,
	.num_resources	= ARRAY_SIZE(alchemy_ac97c_res),
};

static struct platform_device alchemy_ac97c_dma_dev = {
	.name		= "alchemy-pcm-dma",
	.id		= 0,
};

static struct platform_device db1x00_codec_dev = {
	.name		= "ac97-codec",
	.id		= -1,
};

static struct platform_device db1x00_audio_dev = {
	.name		= "db1000-audio",
};

static struct platform_device *db1x00_devs[] = {
	&db1x00_codec_dev,
	&alchemy_ac97c_dma_dev,
	&alchemy_ac97c_dev,
	&db1x00_audio_dev,
};

static struct platform_device *db1100_devs[] = {
	&au1100_lcd_device,
};

static int __init db1000_dev_init(void)
{
	int board = BCSR_WHOAMI_BOARD(bcsr_read(BCSR_WHOAMI));
	int c0, c1, d0, d1, s0, s1;

	if (board == BCSR_WHOAMI_DB1500) {
		c0 = AU1500_GPIO2_INT;
		c1 = AU1500_GPIO5_INT;
		d0 = AU1500_GPIO0_INT;
		d1 = AU1500_GPIO3_INT;
		s0 = AU1500_GPIO1_INT;
		s1 = AU1500_GPIO4_INT;
	} else if (board == BCSR_WHOAMI_DB1100) {
		c0 = AU1100_GPIO2_INT;
		c1 = AU1100_GPIO5_INT;
		d0 = AU1100_GPIO0_INT;
		d1 = AU1100_GPIO3_INT;
		s0 = AU1100_GPIO1_INT;
		s1 = AU1100_GPIO4_INT;
		platform_add_devices(db1100_devs, ARRAY_SIZE(db1100_devs));
	} else if (board == BCSR_WHOAMI_DB1000) {
		c0 = AU1000_GPIO2_INT;
		c1 = AU1000_GPIO5_INT;
		d0 = AU1000_GPIO0_INT;
		d1 = AU1000_GPIO3_INT;
		s0 = AU1000_GPIO1_INT;
		s1 = AU1000_GPIO4_INT;
	} else
		return 0; /* unknown board, no further dev setup to do */

	irq_set_irq_type(d0, IRQ_TYPE_EDGE_BOTH);
	irq_set_irq_type(d1, IRQ_TYPE_EDGE_BOTH);
	irq_set_irq_type(c0, IRQ_TYPE_LEVEL_LOW);
	irq_set_irq_type(c1, IRQ_TYPE_LEVEL_LOW);
	irq_set_irq_type(s0, IRQ_TYPE_LEVEL_LOW);
	irq_set_irq_type(s1, IRQ_TYPE_LEVEL_LOW);

	db1x_register_pcmcia_socket(
		AU1000_PCMCIA_ATTR_PHYS_ADDR,
		AU1000_PCMCIA_ATTR_PHYS_ADDR + 0x000400000 - 1,
		AU1000_PCMCIA_MEM_PHYS_ADDR,
		AU1000_PCMCIA_MEM_PHYS_ADDR  + 0x000400000 - 1,
		AU1000_PCMCIA_IO_PHYS_ADDR,
		AU1000_PCMCIA_IO_PHYS_ADDR   + 0x000010000 - 1,
		c0, d0,	/*s0*/0, 0, 0);

	db1x_register_pcmcia_socket(
		AU1000_PCMCIA_ATTR_PHYS_ADDR + 0x004000000,
		AU1000_PCMCIA_ATTR_PHYS_ADDR + 0x004400000 - 1,
		AU1000_PCMCIA_MEM_PHYS_ADDR  + 0x004000000,
		AU1000_PCMCIA_MEM_PHYS_ADDR  + 0x004400000 - 1,
		AU1000_PCMCIA_IO_PHYS_ADDR   + 0x004000000,
		AU1000_PCMCIA_IO_PHYS_ADDR   + 0x004010000 - 1,
		c1, d1,	/*s1*/0, 0, 1);

	platform_add_devices(db1x00_devs, ARRAY_SIZE(db1x00_devs));
	db1x_register_norflash(32 << 20, 4 /* 32bit */, F_SWAPPED);
	return 0;
}
device_initcall(db1000_dev_init);