amlogic-aml8726-mx-kernel/arch/arm/mach-sa1100/collie.c

/*
 * linux/arch/arm/mach-sa1100/collie.c
 *
 * May be copied or modified under the terms of the GNU General Public
 * License.  See linux/COPYING for more information.
 *
 * This file contains all Collie-specific tweaks.
 *
 * 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.
 *
 * ChangeLog:
 *  2006 Pavel Machek <pavel@ucw.cz>
 *  03-06-2004 John Lenz <lenz@cs.wisc.edu>
 *  06-04-2002 Chris Larson <kergoth@digitalnemesis.net>
 *  04-16-2001 Lineo Japan,Inc. ...
 */

#include <linux/init.h>
#include <linux/kernel.h>
#include <linux/tty.h>
#include <linux/delay.h>
#include <linux/platform_device.h>
#include <linux/mtd/mtd.h>
#include <linux/mtd/partitions.h>
#include <linux/timer.h>
#include <linux/gpio.h>
#include <linux/pda_power.h>

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

#include <asm/mach/arch.h>
#include <asm/mach/flash.h>
#include <asm/mach/map.h>
#include <asm/mach/serial_sa1100.h>

#include <asm/hardware/scoop.h>
#include <asm/mach/sharpsl_param.h>
#include <asm/hardware/locomo.h>
#include <mach/mcp.h>

#include "generic.h"

static struct resource collie_scoop_resources[] = {
	[0] = {
		.start		= 0x40800000,
		.end		= 0x40800fff,
		.flags		= IORESOURCE_MEM,
	},
};

static struct scoop_config collie_scoop_setup = {
	.io_dir 	= COLLIE_SCOOP_IO_DIR,
	.io_out		= COLLIE_SCOOP_IO_OUT,
	.gpio_base	= COLLIE_SCOOP_GPIO_BASE,
};

struct platform_device colliescoop_device = {
	.name		= "sharp-scoop",
	.id		= -1,
	.dev		= {
 		.platform_data	= &collie_scoop_setup,
	},
	.num_resources	= ARRAY_SIZE(collie_scoop_resources),
	.resource	= collie_scoop_resources,
};

static struct scoop_pcmcia_dev collie_pcmcia_scoop[] = {
	{
	.dev		= &colliescoop_device.dev,
	.irq		= COLLIE_IRQ_GPIO_CF_IRQ,
	.cd_irq		= COLLIE_IRQ_GPIO_CF_CD,
	.cd_irq_str	= "PCMCIA0 CD",
	},
};

static struct scoop_pcmcia_config collie_pcmcia_config = {
	.devs		= &collie_pcmcia_scoop[0],
	.num_devs	= 1,
};

static struct mcp_plat_data collie_mcp_data = {
	.mccr0		= MCCR0_ADM | MCCR0_ExtClk,
	.sclk_rate	= 9216000,
	.gpio_base	= COLLIE_TC35143_GPIO_BASE,
};

/*
 * Collie AC IN
 */
static int collie_power_init(struct device *dev)
{
	int ret = gpio_request(COLLIE_GPIO_AC_IN, "ac in");
	if (ret)
		goto err_gpio_req;

	ret = gpio_direction_input(COLLIE_GPIO_AC_IN);
	if (ret)
		goto err_gpio_in;

	return 0;

err_gpio_in:
	gpio_free(COLLIE_GPIO_AC_IN);
err_gpio_req:
	return ret;
}

static void collie_power_exit(struct device *dev)
{
	gpio_free(COLLIE_GPIO_AC_IN);
}

static int collie_power_ac_online(void)
{
	return gpio_get_value(COLLIE_GPIO_AC_IN) == 2;
}

static char *collie_ac_supplied_to[] = {
	"main-battery",
	"backup-battery",
};

static struct pda_power_pdata collie_power_data = {
	.init			= collie_power_init,
	.is_ac_online		= collie_power_ac_online,
	.exit			= collie_power_exit,
	.supplied_to		= collie_ac_supplied_to,
	.num_supplicants	= ARRAY_SIZE(collie_ac_supplied_to),
};

static struct resource collie_power_resource[] = {
	{
		.name		= "ac",
		.start		= gpio_to_irq(COLLIE_GPIO_AC_IN),
		.end		= gpio_to_irq(COLLIE_GPIO_AC_IN),
		.flags		= IORESOURCE_IRQ |
				  IORESOURCE_IRQ_HIGHEDGE |
				  IORESOURCE_IRQ_LOWEDGE,
	},
};

static struct platform_device collie_power_device = {
	.name			= "pda-power",
	.id			= -1,
	.dev.platform_data	= &collie_power_data,
	.resource		= collie_power_resource,
	.num_resources		= ARRAY_SIZE(collie_power_resource),
};

#ifdef CONFIG_SHARP_LOCOMO
/*
 * low-level UART features.
 */
struct platform_device collie_locomo_device;

static void collie_uart_set_mctrl(struct uart_port *port, u_int mctrl)
{
	if (mctrl & TIOCM_RTS)
		locomo_gpio_write(&collie_locomo_device.dev, LOCOMO_GPIO_RTS, 0);
	else
		locomo_gpio_write(&collie_locomo_device.dev, LOCOMO_GPIO_RTS, 1);

	if (mctrl & TIOCM_DTR)
		locomo_gpio_write(&collie_locomo_device.dev, LOCOMO_GPIO_DTR, 0);
	else
		locomo_gpio_write(&collie_locomo_device.dev, LOCOMO_GPIO_DTR, 1);
}

static u_int collie_uart_get_mctrl(struct uart_port *port)
{
	int ret = TIOCM_CD;
	unsigned int r;

	r = locomo_gpio_read_output(&collie_locomo_device.dev, LOCOMO_GPIO_CTS & LOCOMO_GPIO_DSR);
	if (r == -ENODEV)
		return ret;
	if (r & LOCOMO_GPIO_CTS)
		ret |= TIOCM_CTS;
	if (r & LOCOMO_GPIO_DSR)
		ret |= TIOCM_DSR;

	return ret;
}

static struct sa1100_port_fns collie_port_fns __initdata = {
	.set_mctrl	= collie_uart_set_mctrl,
	.get_mctrl	= collie_uart_get_mctrl,
};

static int collie_uart_probe(struct locomo_dev *dev)
{
	return 0;
}

static int collie_uart_remove(struct locomo_dev *dev)
{
	return 0;
}

static struct locomo_driver collie_uart_driver = {
	.drv = {
		.name = "collie_uart",
	},
	.devid	= LOCOMO_DEVID_UART,
	.probe	= collie_uart_probe,
	.remove	= collie_uart_remove,
};

static int __init collie_uart_init(void)
{
	return locomo_driver_register(&collie_uart_driver);
}
device_initcall(collie_uart_init);

#endif


static struct resource locomo_resources[] = {
	[0] = {
		.start		= 0x40000000,
		.end		= 0x40001fff,
		.flags		= IORESOURCE_MEM,
	},
	[1] = {
		.start		= IRQ_GPIO25,
		.end		= IRQ_GPIO25,
		.flags		= IORESOURCE_IRQ,
	},
};

static struct locomo_platform_data locomo_info = {
	.irq_base	= IRQ_BOARD_START,
};

struct platform_device collie_locomo_device = {
	.name		= "locomo",
	.id		= 0,
	.dev		= {
		.platform_data	= &locomo_info,
	},
	.num_resources	= ARRAY_SIZE(locomo_resources),
	.resource	= locomo_resources,
};

static struct platform_device *devices[] __initdata = {
	&collie_locomo_device,
	&colliescoop_device,
	&collie_power_device,
};

static struct mtd_partition collie_partitions[] = {
	{
		.name		= "bootloader",
		.offset 	= 0,
		.size		= 0x000C0000,
		.mask_flags	= MTD_WRITEABLE
	}, {
		.name		= "kernel",
		.offset 	= MTDPART_OFS_APPEND,
		.size		= 0x00100000,
	}, {
		.name		= "rootfs",
		.offset 	= MTDPART_OFS_APPEND,
		.size		= 0x00e20000,
	}
};

static int collie_flash_init(void)
{
	int rc = gpio_request(COLLIE_GPIO_VPEN, "flash Vpp enable");
	if (rc)
		return rc;

	rc = gpio_direction_output(COLLIE_GPIO_VPEN, 1);
	if (rc)
		gpio_free(COLLIE_GPIO_VPEN);

	return rc;
}

static void collie_set_vpp(int vpp)
{
	gpio_set_value(COLLIE_GPIO_VPEN, vpp);
}

static void collie_flash_exit(void)
{
	gpio_free(COLLIE_GPIO_VPEN);
}

static struct flash_platform_data collie_flash_data = {
	.map_name	= "cfi_probe",
	.init		= collie_flash_init,
	.set_vpp	= collie_set_vpp,
	.exit		= collie_flash_exit,
	.parts		= collie_partitions,
	.nr_parts	= ARRAY_SIZE(collie_partitions),
};

static struct resource collie_flash_resources[] = {
	{
		.start	= SA1100_CS0_PHYS,
		.end	= SA1100_CS0_PHYS + SZ_32M - 1,
		.flags	= IORESOURCE_MEM,
	}
};

static void __init collie_init(void)
{
	int ret = 0;

	/* cpu initialize */
	GAFR = GPIO_SSP_TXD | GPIO_SSP_SCLK | GPIO_SSP_SFRM | GPIO_SSP_CLK |
		GPIO_MCP_CLK | GPIO_32_768kHz;

	GPDR = GPIO_LDD8 | GPIO_LDD9 | GPIO_LDD10 | GPIO_LDD11 | GPIO_LDD12 |
		GPIO_LDD13 | GPIO_LDD14 | GPIO_LDD15 | GPIO_SSP_TXD |
		GPIO_SSP_SCLK | GPIO_SSP_SFRM | GPIO_SDLC_SCLK |
		_COLLIE_GPIO_UCB1x00_RESET | _COLLIE_GPIO_nMIC_ON |
		_COLLIE_GPIO_nREMOCON_ON | GPIO_32_768kHz;

	PPDR = PPC_LDD0 | PPC_LDD1 | PPC_LDD2 | PPC_LDD3 | PPC_LDD4 | PPC_LDD5 |
		PPC_LDD6 | PPC_LDD7 | PPC_L_PCLK | PPC_L_LCLK | PPC_L_FCLK | PPC_L_BIAS |
		PPC_TXD1 | PPC_TXD2 | PPC_TXD3 | PPC_TXD4 | PPC_SCLK | PPC_SFRM;

	PWER = _COLLIE_GPIO_AC_IN | _COLLIE_GPIO_CO | _COLLIE_GPIO_ON_KEY |
		_COLLIE_GPIO_WAKEUP | _COLLIE_GPIO_nREMOCON_INT | PWER_RTC;

	PGSR = _COLLIE_GPIO_nREMOCON_ON;

	PSDR = PPC_RXD1 | PPC_RXD2 | PPC_RXD3 | PPC_RXD4;

	PCFR = PCFR_OPDE;

	GPSR |= _COLLIE_GPIO_UCB1x00_RESET;


	platform_scoop_config = &collie_pcmcia_config;

	ret = platform_add_devices(devices, ARRAY_SIZE(devices));
	if (ret) {
		printk(KERN_WARNING "collie: Unable to register LoCoMo device\n");
	}

	sa11x0_register_mtd(&collie_flash_data, collie_flash_resources,
			    ARRAY_SIZE(collie_flash_resources));
	sa11x0_register_mcp(&collie_mcp_data);

	sharpsl_save_param();
}

static struct map_desc collie_io_desc[] __initdata = {
	{	/* 32M main flash (cs0) */
		.virtual	= 0xe8000000,
		.pfn		= __phys_to_pfn(0x00000000),
		.length		= 0x02000000,
		.type		= MT_DEVICE
	}, {	/* 32M boot flash (cs1) */
		.virtual	= 0xea000000,
		.pfn		= __phys_to_pfn(0x08000000),
		.length		= 0x02000000,
		.type		= MT_DEVICE
	}
};

static void __init collie_map_io(void)
{
	sa1100_map_io();
	iotable_init(collie_io_desc, ARRAY_SIZE(collie_io_desc));

#ifdef CONFIG_SHARP_LOCOMO
	sa1100_register_uart_fns(&collie_port_fns);
#endif
	sa1100_register_uart(0, 3);
	sa1100_register_uart(1, 1);
}

MACHINE_START(COLLIE, "Sharp-Collie")
	.map_io		= collie_map_io,
	.init_irq	= sa1100_init_irq,
	.timer		= &sa1100_timer,
	.init_machine	= collie_init,
MACHINE_END