arch/arm/mach-sa1100/h3600.c - maze/linux - Git at Google

 /*
  * Hardware definitions for Compaq iPAQ H3xxx Handheld Computers
  *
  * Copyright 2000,1 Compaq Computer Corporation.
  *
  * Use consistent with the GNU GPL is permitted,
  * provided that this copyright notice is
  * preserved in its entirety in all copies and derived works.
  *
  * COMPAQ COMPUTER CORPORATION MAKES NO WARRANTIES, EXPRESSED OR IMPLIED,
  * AS TO THE USEFULNESS OR CORRECTNESS OF THIS CODE OR ITS
  * FITNESS FOR ANY PARTICULAR PURPOSE.
  *
  * Author: Jamey Hicks.
  *
  * History:
  *
  * 2001-10-??	Andrew Christian   Added support for iPAQ H3800
  *				   and abstracted EGPIO interface.
  *
  */
 #include <linux/module.h>
 #include <linux/init.h>
 #include <linux/kernel.h>
 #include <linux/tty.h>
 #include <linux/pm.h>
 #include <linux/device.h>
 #include <linux/mtd/mtd.h>
 #include <linux/mtd/partitions.h>
 #include <linux/serial_core.h>

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

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

 #include <mach/h3600.h>
 #include <mach/h3600_gpio.h>

 #include "generic.h"

 struct ipaq_model_ops ipaq_model_ops;
 EXPORT_SYMBOL(ipaq_model_ops);

 static struct mtd_partition h3xxx_partitions[] = {
 	{
 		.name		= "H3XXX boot firmware",
 		.size		= 0x00040000,
 		.offset		= 0,
 		.mask_flags	= MTD_WRITEABLE,  /* force read-only */
 	}, {
 #ifdef CONFIG_MTD_2PARTS_IPAQ
 		.name		= "H3XXX root jffs2",
 		.size		= MTDPART_SIZ_FULL,
 		.offset		= 0x00040000,
 #else
 		.name		= "H3XXX kernel",
 		.size		= 0x00080000,
 		.offset		= 0x00040000,
 	}, {
 		.name		= "H3XXX params",
 		.size		= 0x00040000,
 		.offset		= 0x000C0000,
 	}, {
 #ifdef CONFIG_JFFS2_FS
 		.name		= "H3XXX root jffs2",
 		.size		= MTDPART_SIZ_FULL,
 		.offset		= 0x00100000,
 #else
 		.name		= "H3XXX initrd",
 		.size		= 0x00100000,
 		.offset		= 0x00100000,
 	}, {
 		.name		= "H3XXX root cramfs",
 		.size		= 0x00300000,
 		.offset		= 0x00200000,
 	}, {
 		.name		= "H3XXX usr cramfs",
 		.size		= 0x00800000,
 		.offset		= 0x00500000,
 	}, {
 		.name		= "H3XXX usr local",
 		.size		= MTDPART_SIZ_FULL,
 		.offset		= 0x00d00000,
 #endif
 #endif
 	}
 };

 static void h3xxx_set_vpp(int vpp)
 {
 	assign_h3600_egpio(IPAQ_EGPIO_VPP_ON, vpp);
 }

 static struct flash_platform_data h3xxx_flash_data = {
 	.map_name	= "cfi_probe",
 	.set_vpp	= h3xxx_set_vpp,
 	.parts		= h3xxx_partitions,
 	.nr_parts	= ARRAY_SIZE(h3xxx_partitions),
 };

 static struct resource h3xxx_flash_resource = {
 	.start		= SA1100_CS0_PHYS,
 	.end		= SA1100_CS0_PHYS + SZ_32M - 1,
 	.flags		= IORESOURCE_MEM,
 };

 /*
  * This turns the IRDA power on or off on the Compaq H3600
  */
 static int h3600_irda_set_power(struct device *dev, unsigned int state)
 {
 	assign_h3600_egpio( IPAQ_EGPIO_IR_ON, state );

 	return 0;
 }

 static void h3600_irda_set_speed(struct device *dev, unsigned int speed)
 {
 	if (speed < 4000000) {
 		clr_h3600_egpio(IPAQ_EGPIO_IR_FSEL);
 	} else {
 		set_h3600_egpio(IPAQ_EGPIO_IR_FSEL);
 	}
 }

 static struct irda_platform_data h3600_irda_data = {
 	.set_power	= h3600_irda_set_power,
 	.set_speed	= h3600_irda_set_speed,
 };

 static void h3xxx_mach_init(void)
 {
 	sa11x0_set_flash_data(&h3xxx_flash_data, &h3xxx_flash_resource, 1);
 	sa11x0_set_irda_data(&h3600_irda_data);
 }

 /*
  * low-level UART features
  */

 static void h3600_uart_set_mctrl(struct uart_port *port, u_int mctrl)
 {
 	if (port->mapbase == _Ser3UTCR0) {
 		if (mctrl & TIOCM_RTS)
 			GPCR = GPIO_H3600_COM_RTS;
 		else
 			GPSR = GPIO_H3600_COM_RTS;
 	}
 }

 static u_int h3600_uart_get_mctrl(struct uart_port *port)
 {
 	u_int ret = TIOCM_CD | TIOCM_CTS | TIOCM_DSR;

 	if (port->mapbase == _Ser3UTCR0) {
 		int gplr = GPLR;
 		/* DCD and CTS bits are inverted in GPLR by RS232 transceiver */
 		if (gplr & GPIO_H3600_COM_DCD)
 			ret &= ~TIOCM_CD;
 		if (gplr & GPIO_H3600_COM_CTS)
 			ret &= ~TIOCM_CTS;
 	}

 	return ret;
 }

 static void h3600_uart_pm(struct uart_port *port, u_int state, u_int oldstate)
 {
 	if (port->mapbase == _Ser2UTCR0) { /* TODO: REMOVE THIS */
 		assign_h3600_egpio(IPAQ_EGPIO_IR_ON, !state);
 	} else if (port->mapbase == _Ser3UTCR0) {
 		assign_h3600_egpio(IPAQ_EGPIO_RS232_ON, !state);
 	}
 }

 /*
  * Enable/Disable wake up events for this serial port.
  * Obviously, we only support this on the normal COM port.
  */
 static int h3600_uart_set_wake(struct uart_port *port, u_int enable)
 {
 	int err = -EINVAL;

 	if (port->mapbase == _Ser3UTCR0) {
 		if (enable)
 			PWER |= PWER_GPIO23 | PWER_GPIO25; /* DCD and CTS */
 		else
 			PWER &= ~(PWER_GPIO23 | PWER_GPIO25); /* DCD and CTS */
 		err = 0;
 	}
 	return err;
 }

 static struct sa1100_port_fns h3600_port_fns __initdata = {
 	.set_mctrl	= h3600_uart_set_mctrl,
 	.get_mctrl	= h3600_uart_get_mctrl,
 	.pm		= h3600_uart_pm,
 	.set_wake	= h3600_uart_set_wake,
 };

 /*
  * helper for sa1100fb
  */
 static void h3xxx_lcd_power(int enable)
 {
 	assign_h3600_egpio(IPAQ_EGPIO_LCD_POWER, enable);
 }

 static struct map_desc h3600_io_desc[] __initdata = {
   	{	/* static memory bank 2  CS#2 */
 		.virtual	=  H3600_BANK_2_VIRT,
 		.pfn		= __phys_to_pfn(SA1100_CS2_PHYS),
 		.length		= 0x02800000,
 		.type		= MT_DEVICE
 	}, {	/* static memory bank 4  CS#4 */
 		.virtual	=  H3600_BANK_4_VIRT,
 		.pfn		= __phys_to_pfn(SA1100_CS4_PHYS),
 		.length		= 0x00800000,
 		.type		= MT_DEVICE
 	}, {	/* EGPIO 0		CS#5 */
 		.virtual	=  H3600_EGPIO_VIRT,
 		.pfn		= __phys_to_pfn(H3600_EGPIO_PHYS),
 		.length		= 0x01000000,
 		.type		= MT_DEVICE
 	}
 };

 /*
  * Common map_io initialization
  */

 static void __init h3xxx_map_io(void)
 {
 	sa1100_map_io();
 	iotable_init(h3600_io_desc, ARRAY_SIZE(h3600_io_desc));

 	sa1100_register_uart_fns(&h3600_port_fns);
 	sa1100_register_uart(0, 3); /* Common serial port */
 //	sa1100_register_uart(1, 1); /* Microcontroller on 3100/3600 */

 	/* Ensure those pins are outputs and driving low  */
 	PPDR |= PPC_TXD4 | PPC_SCLK | PPC_SFRM;
 	PPSR &= ~(PPC_TXD4 | PPC_SCLK | PPC_SFRM);

 	/* Configure suspend conditions */
 	PGSR = 0;
 	PWER = PWER_GPIO0 | PWER_RTC;
 	PCFR = PCFR_OPDE;
 	PSDR = 0;

 	sa1100fb_lcd_power = h3xxx_lcd_power;
 }

 static __inline__ void do_blank(int setp)
 {
 	if (ipaq_model_ops.blank_callback)
 		ipaq_model_ops.blank_callback(1-setp);
 }

 /************************* H3100 *************************/

 #ifdef CONFIG_SA1100_H3100

 #define H3100_EGPIO	(*(volatile unsigned int *)H3600_EGPIO_VIRT)
 static unsigned int h3100_egpio = 0;

 static void h3100_control_egpio(enum ipaq_egpio_type x, int setp)
 {
 	unsigned int egpio = 0;
 	long	     gpio = 0;
 	unsigned long flags;

 	switch (x) {
 	case IPAQ_EGPIO_LCD_POWER:
 		egpio |= EGPIO_H3600_LCD_ON;
 		gpio  |= GPIO_H3100_LCD_3V_ON;
 		do_blank(setp);
 		break;
 	case IPAQ_EGPIO_LCD_ENABLE:
 		break;
 	case IPAQ_EGPIO_CODEC_NRESET:
 		egpio |= EGPIO_H3600_CODEC_NRESET;
 		break;
 	case IPAQ_EGPIO_AUDIO_ON:
 		gpio |= GPIO_H3100_AUD_PWR_ON
 			| GPIO_H3100_AUD_ON;
 		break;
 	case IPAQ_EGPIO_QMUTE:
 		gpio |= GPIO_H3100_QMUTE;
 		break;
 	case IPAQ_EGPIO_OPT_NVRAM_ON:
 		egpio |= EGPIO_H3600_OPT_NVRAM_ON;
 		break;
 	case IPAQ_EGPIO_OPT_ON:
 		egpio |= EGPIO_H3600_OPT_ON;
 		break;
 	case IPAQ_EGPIO_CARD_RESET:
 		egpio |= EGPIO_H3600_CARD_RESET;
 		break;
 	case IPAQ_EGPIO_OPT_RESET:
 		egpio |= EGPIO_H3600_OPT_RESET;
 		break;
 	case IPAQ_EGPIO_IR_ON:
 		gpio |= GPIO_H3100_IR_ON;
 		break;
 	case IPAQ_EGPIO_IR_FSEL:
 		gpio |= GPIO_H3100_IR_FSEL;
 		break;
 	case IPAQ_EGPIO_RS232_ON:
 		egpio |= EGPIO_H3600_RS232_ON;
 		break;
 	case IPAQ_EGPIO_VPP_ON:
 		egpio |= EGPIO_H3600_VPP_ON;
 		break;
 	}

 	if (egpio || gpio) {
 		local_irq_save(flags);
 		if (setp) {
 			h3100_egpio |= egpio;
 			GPSR = gpio;
 		} else {
 			h3100_egpio &= ~egpio;
 			GPCR = gpio;
 		}
 		H3100_EGPIO = h3100_egpio;
 		local_irq_restore(flags);
 	}
 }

 static unsigned long h3100_read_egpio(void)
 {
 	return h3100_egpio;
 }

 static int h3100_pm_callback(int req)
 {
 	if (ipaq_model_ops.pm_callback_aux)
 		return ipaq_model_ops.pm_callback_aux(req);
 	return 0;
 }

 static struct ipaq_model_ops h3100_model_ops __initdata = {
 	.generic_name	= "3100",
 	.control	= h3100_control_egpio,
 	.read		= h3100_read_egpio,
 	.pm_callback	= h3100_pm_callback
 };

 #define H3100_DIRECT_EGPIO (GPIO_H3100_BT_ON	  \
 			  | GPIO_H3100_GPIO3	  \
 			  | GPIO_H3100_QMUTE	  \
 			  | GPIO_H3100_LCD_3V_ON  \
 			  | GPIO_H3100_AUD_ON	  \
 			  | GPIO_H3100_AUD_PWR_ON \
 			  | GPIO_H3100_IR_ON	  \
 			  | GPIO_H3100_IR_FSEL)

 static void __init h3100_map_io(void)
 {
 	h3xxx_map_io();

 	/* Initialize h3100-specific values here */
 	GPCR = 0x0fffffff;	 /* All outputs are set low by default */
 	GPDR = GPIO_H3600_COM_RTS  | GPIO_H3600_L3_CLOCK |
 	       GPIO_H3600_L3_MODE  | GPIO_H3600_L3_DATA  |
 	       GPIO_H3600_CLK_SET1 | GPIO_H3600_CLK_SET0 |
 	       H3100_DIRECT_EGPIO;

 	/* Older bootldrs put GPIO2-9 in alternate mode on the
 	   assumption that they are used for video */
 	GAFR &= ~H3100_DIRECT_EGPIO;

 	H3100_EGPIO = h3100_egpio;
 	ipaq_model_ops = h3100_model_ops;
 }

 MACHINE_START(H3100, "Compaq iPAQ H3100")
 	.phys_io	= 0x80000000,
 	.io_pg_offst	= ((0xf8000000) >> 18) & 0xfffc,
 	.boot_params	= 0xc0000100,
 	.map_io		= h3100_map_io,
 	.init_irq	= sa1100_init_irq,
 	.timer		= &sa1100_timer,
 	.init_machine	= h3xxx_mach_init,
 MACHINE_END

 #endif /* CONFIG_SA1100_H3100 */

 /************************* H3600 *************************/

 #ifdef CONFIG_SA1100_H3600

 #define H3600_EGPIO	(*(volatile unsigned int *)H3600_EGPIO_VIRT)
 static unsigned int h3600_egpio = EGPIO_H3600_RS232_ON;

 static void h3600_control_egpio(enum ipaq_egpio_type x, int setp)
 {
 	unsigned int egpio = 0;
 	unsigned long flags;

 	switch (x) {
 	case IPAQ_EGPIO_LCD_POWER:
 		egpio |= EGPIO_H3600_LCD_ON |
 			 EGPIO_H3600_LCD_PCI |
 			 EGPIO_H3600_LCD_5V_ON |
 			 EGPIO_H3600_LVDD_ON;
 		do_blank(setp);
 		break;
 	case IPAQ_EGPIO_LCD_ENABLE:
 		break;
 	case IPAQ_EGPIO_CODEC_NRESET:
 		egpio |= EGPIO_H3600_CODEC_NRESET;
 		break;
 	case IPAQ_EGPIO_AUDIO_ON:
 		egpio |= EGPIO_H3600_AUD_AMP_ON |
 			 EGPIO_H3600_AUD_PWR_ON;
 		break;
 	case IPAQ_EGPIO_QMUTE:
 		egpio |= EGPIO_H3600_QMUTE;
 		break;
 	case IPAQ_EGPIO_OPT_NVRAM_ON:
 		egpio |= EGPIO_H3600_OPT_NVRAM_ON;
 		break;
 	case IPAQ_EGPIO_OPT_ON:
 		egpio |= EGPIO_H3600_OPT_ON;
 		break;
 	case IPAQ_EGPIO_CARD_RESET:
 		egpio |= EGPIO_H3600_CARD_RESET;
 		break;
 	case IPAQ_EGPIO_OPT_RESET:
 		egpio |= EGPIO_H3600_OPT_RESET;
 		break;
 	case IPAQ_EGPIO_IR_ON:
 		egpio |= EGPIO_H3600_IR_ON;
 		break;
 	case IPAQ_EGPIO_IR_FSEL:
 		egpio |= EGPIO_H3600_IR_FSEL;
 		break;
 	case IPAQ_EGPIO_RS232_ON:
 		egpio |= EGPIO_H3600_RS232_ON;
 		break;
 	case IPAQ_EGPIO_VPP_ON:
 		egpio |= EGPIO_H3600_VPP_ON;
 		break;
 	}

 	if (egpio) {
 		local_irq_save(flags);
 		if (setp)
 			h3600_egpio |= egpio;
 		else
 			h3600_egpio &= ~egpio;
 		H3600_EGPIO = h3600_egpio;
 		local_irq_restore(flags);
 	}
 }

 static unsigned long h3600_read_egpio(void)
 {
 	return h3600_egpio;
 }

 static int h3600_pm_callback(int req)
 {
 	if (ipaq_model_ops.pm_callback_aux)
 		return ipaq_model_ops.pm_callback_aux(req);
 	return 0;
 }

 static struct ipaq_model_ops h3600_model_ops __initdata = {
 	.generic_name	= "3600",
 	.control	= h3600_control_egpio,
 	.read		= h3600_read_egpio,
 	.pm_callback	= h3600_pm_callback
 };

 static void __init h3600_map_io(void)
 {
 	h3xxx_map_io();

 	/* Initialize h3600-specific values here */

 	GPCR = 0x0fffffff;	 /* All outputs are set low by default */
 	GPDR = GPIO_H3600_COM_RTS  | GPIO_H3600_L3_CLOCK |
 	       GPIO_H3600_L3_MODE  | GPIO_H3600_L3_DATA  |
 	       GPIO_H3600_CLK_SET1 | GPIO_H3600_CLK_SET0 |
 	       GPIO_LDD15 | GPIO_LDD14 | GPIO_LDD13 | GPIO_LDD12 |
 	       GPIO_LDD11 | GPIO_LDD10 | GPIO_LDD9  | GPIO_LDD8;

 	H3600_EGPIO = h3600_egpio;	   /* Maintains across sleep? */
 	ipaq_model_ops = h3600_model_ops;
 }

 MACHINE_START(H3600, "Compaq iPAQ H3600")
 	.phys_io	= 0x80000000,
 	.io_pg_offst	= ((0xf8000000) >> 18) & 0xfffc,
 	.boot_params	= 0xc0000100,
 	.map_io		= h3600_map_io,
 	.init_irq	= sa1100_init_irq,
 	.timer		= &sa1100_timer,
 	.init_machine	= h3xxx_mach_init,
 MACHINE_END

 #endif /* CONFIG_SA1100_H3600 */
	/*
	* Hardware definitions for Compaq iPAQ H3xxx Handheld Computers
	*
	* Copyright 2000,1 Compaq Computer Corporation.
	*
	* Use consistent with the GNU GPL is permitted,
	* provided that this copyright notice is
	* preserved in its entirety in all copies and derived works.
	*
	* COMPAQ COMPUTER CORPORATION MAKES NO WARRANTIES, EXPRESSED OR IMPLIED,
	* AS TO THE USEFULNESS OR CORRECTNESS OF THIS CODE OR ITS
	* FITNESS FOR ANY PARTICULAR PURPOSE.
	*
	* Author: Jamey Hicks.
	*
	* History:
	*
	* 2001-10-?? Andrew Christian Added support for iPAQ H3800
	* and abstracted EGPIO interface.
	*
	*/
	#include <linux/module.h>
	#include <linux/init.h>
	#include <linux/kernel.h>
	#include <linux/tty.h>
	#include <linux/pm.h>
	#include <linux/device.h>
	#include <linux/mtd/mtd.h>
	#include <linux/mtd/partitions.h>
	#include <linux/serial_core.h>

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

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

	#include <mach/h3600.h>
	#include <mach/h3600_gpio.h>

	#include "generic.h"

	struct ipaq_model_ops ipaq_model_ops;
	EXPORT_SYMBOL(ipaq_model_ops);

	static struct mtd_partition h3xxx_partitions[] = {
	{
	.name = "H3XXX boot firmware",
	.size = 0x00040000,
	.offset = 0,
	.mask_flags = MTD_WRITEABLE, /* force read-only */
	}, {
	#ifdef CONFIG_MTD_2PARTS_IPAQ
	.name = "H3XXX root jffs2",
	.size = MTDPART_SIZ_FULL,
	.offset = 0x00040000,
	#else
	.name = "H3XXX kernel",
	.size = 0x00080000,
	.offset = 0x00040000,
	}, {
	.name = "H3XXX params",
	.size = 0x00040000,
	.offset = 0x000C0000,
	}, {
	#ifdef CONFIG_JFFS2_FS
	.name = "H3XXX root jffs2",
	.size = MTDPART_SIZ_FULL,
	.offset = 0x00100000,
	#else
	.name = "H3XXX initrd",
	.size = 0x00100000,
	.offset = 0x00100000,
	}, {
	.name = "H3XXX root cramfs",
	.size = 0x00300000,
	.offset = 0x00200000,
	}, {
	.name = "H3XXX usr cramfs",
	.size = 0x00800000,
	.offset = 0x00500000,
	}, {
	.name = "H3XXX usr local",
	.size = MTDPART_SIZ_FULL,
	.offset = 0x00d00000,
	#endif
	#endif
	}
	};

	static void h3xxx_set_vpp(int vpp)
	{
	assign_h3600_egpio(IPAQ_EGPIO_VPP_ON, vpp);
	}

	static struct flash_platform_data h3xxx_flash_data = {
	.map_name = "cfi_probe",
	.set_vpp = h3xxx_set_vpp,
	.parts = h3xxx_partitions,
	.nr_parts = ARRAY_SIZE(h3xxx_partitions),
	};

	static struct resource h3xxx_flash_resource = {
	.start = SA1100_CS0_PHYS,
	.end = SA1100_CS0_PHYS + SZ_32M - 1,
	.flags = IORESOURCE_MEM,
	};

	/*
	* This turns the IRDA power on or off on the Compaq H3600
	*/
	static int h3600_irda_set_power(struct device *dev, unsigned int state)
	{
	assign_h3600_egpio( IPAQ_EGPIO_IR_ON, state );

	return 0;
	}

	static void h3600_irda_set_speed(struct device *dev, unsigned int speed)
	{
	if (speed < 4000000) {
	clr_h3600_egpio(IPAQ_EGPIO_IR_FSEL);
	} else {
	set_h3600_egpio(IPAQ_EGPIO_IR_FSEL);
	}
	}

	static struct irda_platform_data h3600_irda_data = {
	.set_power = h3600_irda_set_power,
	.set_speed = h3600_irda_set_speed,
	};

	static void h3xxx_mach_init(void)
	{
	sa11x0_set_flash_data(&h3xxx_flash_data, &h3xxx_flash_resource, 1);
	sa11x0_set_irda_data(&h3600_irda_data);
	}

	/*
	* low-level UART features
	*/

	static void h3600_uart_set_mctrl(struct uart_port *port, u_int mctrl)
	{
	if (port->mapbase == _Ser3UTCR0) {
	if (mctrl & TIOCM_RTS)
	GPCR = GPIO_H3600_COM_RTS;
	else
	GPSR = GPIO_H3600_COM_RTS;
	}
	}

	static u_int h3600_uart_get_mctrl(struct uart_port *port)
	{
	u_int ret = TIOCM_CD \| TIOCM_CTS \| TIOCM_DSR;

	if (port->mapbase == _Ser3UTCR0) {
	int gplr = GPLR;
	/* DCD and CTS bits are inverted in GPLR by RS232 transceiver */
	if (gplr & GPIO_H3600_COM_DCD)
	ret &= ~TIOCM_CD;
	if (gplr & GPIO_H3600_COM_CTS)
	ret &= ~TIOCM_CTS;
	}

	return ret;
	}

	static void h3600_uart_pm(struct uart_port *port, u_int state, u_int oldstate)
	{
	if (port->mapbase == _Ser2UTCR0) { /* TODO: REMOVE THIS */
	assign_h3600_egpio(IPAQ_EGPIO_IR_ON, !state);
	} else if (port->mapbase == _Ser3UTCR0) {
	assign_h3600_egpio(IPAQ_EGPIO_RS232_ON, !state);
	}
	}

	/*
	* Enable/Disable wake up events for this serial port.
	* Obviously, we only support this on the normal COM port.
	*/
	static int h3600_uart_set_wake(struct uart_port *port, u_int enable)
	{
	int err = -EINVAL;

	if (port->mapbase == _Ser3UTCR0) {
	if (enable)
	PWER \|= PWER_GPIO23 \| PWER_GPIO25; /* DCD and CTS */
	else
	PWER &= ~(PWER_GPIO23 \| PWER_GPIO25); /* DCD and CTS */
	err = 0;
	}
	return err;
	}

	static struct sa1100_port_fns h3600_port_fns __initdata = {
	.set_mctrl = h3600_uart_set_mctrl,
	.get_mctrl = h3600_uart_get_mctrl,
	.pm = h3600_uart_pm,
	.set_wake = h3600_uart_set_wake,
	};

	/*
	* helper for sa1100fb
	*/
	static void h3xxx_lcd_power(int enable)
	{
	assign_h3600_egpio(IPAQ_EGPIO_LCD_POWER, enable);
	}

	static struct map_desc h3600_io_desc[] __initdata = {
	{ /* static memory bank 2 CS#2 */
	.virtual = H3600_BANK_2_VIRT,
	.pfn = __phys_to_pfn(SA1100_CS2_PHYS),
	.length = 0x02800000,
	.type = MT_DEVICE
	}, { /* static memory bank 4 CS#4 */
	.virtual = H3600_BANK_4_VIRT,
	.pfn = __phys_to_pfn(SA1100_CS4_PHYS),
	.length = 0x00800000,
	.type = MT_DEVICE
	}, { /* EGPIO 0 CS#5 */
	.virtual = H3600_EGPIO_VIRT,
	.pfn = __phys_to_pfn(H3600_EGPIO_PHYS),
	.length = 0x01000000,
	.type = MT_DEVICE
	}
	};

	/*
	* Common map_io initialization
	*/

	static void __init h3xxx_map_io(void)
	{
	sa1100_map_io();
	iotable_init(h3600_io_desc, ARRAY_SIZE(h3600_io_desc));

	sa1100_register_uart_fns(&h3600_port_fns);
	sa1100_register_uart(0, 3); /* Common serial port */
	// sa1100_register_uart(1, 1); /* Microcontroller on 3100/3600 */

	/* Ensure those pins are outputs and driving low */
	PPDR \|= PPC_TXD4 \| PPC_SCLK \| PPC_SFRM;
	PPSR &= ~(PPC_TXD4 \| PPC_SCLK \| PPC_SFRM);

	/* Configure suspend conditions */
	PGSR = 0;
	PWER = PWER_GPIO0 \| PWER_RTC;
	PCFR = PCFR_OPDE;
	PSDR = 0;

	sa1100fb_lcd_power = h3xxx_lcd_power;
	}

	static __inline__ void do_blank(int setp)
	{
	if (ipaq_model_ops.blank_callback)
	ipaq_model_ops.blank_callback(1-setp);
	}

	/*********************** H3100 ***********************/

	#ifdef CONFIG_SA1100_H3100

	#define H3100_EGPIO ((volatile unsigned int )H3600_EGPIO_VIRT)
	static unsigned int h3100_egpio = 0;

	static void h3100_control_egpio(enum ipaq_egpio_type x, int setp)
	{
	unsigned int egpio = 0;
	long gpio = 0;
	unsigned long flags;

	switch (x) {
	case IPAQ_EGPIO_LCD_POWER:
	egpio \|= EGPIO_H3600_LCD_ON;
	gpio \|= GPIO_H3100_LCD_3V_ON;
	do_blank(setp);
	break;
	case IPAQ_EGPIO_LCD_ENABLE:
	break;
	case IPAQ_EGPIO_CODEC_NRESET:
	egpio \|= EGPIO_H3600_CODEC_NRESET;
	break;
	case IPAQ_EGPIO_AUDIO_ON:
	gpio \|= GPIO_H3100_AUD_PWR_ON
	\| GPIO_H3100_AUD_ON;
	break;
	case IPAQ_EGPIO_QMUTE:
	gpio \|= GPIO_H3100_QMUTE;
	break;
	case IPAQ_EGPIO_OPT_NVRAM_ON:
	egpio \|= EGPIO_H3600_OPT_NVRAM_ON;
	break;
	case IPAQ_EGPIO_OPT_ON:
	egpio \|= EGPIO_H3600_OPT_ON;
	break;
	case IPAQ_EGPIO_CARD_RESET:
	egpio \|= EGPIO_H3600_CARD_RESET;
	break;
	case IPAQ_EGPIO_OPT_RESET:
	egpio \|= EGPIO_H3600_OPT_RESET;
	break;
	case IPAQ_EGPIO_IR_ON:
	gpio \|= GPIO_H3100_IR_ON;
	break;
	case IPAQ_EGPIO_IR_FSEL:
	gpio \|= GPIO_H3100_IR_FSEL;
	break;
	case IPAQ_EGPIO_RS232_ON:
	egpio \|= EGPIO_H3600_RS232_ON;
	break;
	case IPAQ_EGPIO_VPP_ON:
	egpio \|= EGPIO_H3600_VPP_ON;
	break;
	}

	if (egpio \|\| gpio) {
	local_irq_save(flags);
	if (setp) {
	h3100_egpio \|= egpio;
	GPSR = gpio;
	} else {
	h3100_egpio &= ~egpio;
	GPCR = gpio;
	}
	H3100_EGPIO = h3100_egpio;
	local_irq_restore(flags);
	}
	}

	static unsigned long h3100_read_egpio(void)
	{
	return h3100_egpio;
	}

	static int h3100_pm_callback(int req)
	{
	if (ipaq_model_ops.pm_callback_aux)
	return ipaq_model_ops.pm_callback_aux(req);
	return 0;
	}

	static struct ipaq_model_ops h3100_model_ops __initdata = {
	.generic_name = "3100",
	.control = h3100_control_egpio,
	.read = h3100_read_egpio,
	.pm_callback = h3100_pm_callback
	};

	#define H3100_DIRECT_EGPIO (GPIO_H3100_BT_ON \
	\| GPIO_H3100_GPIO3 \
	\| GPIO_H3100_QMUTE \
	\| GPIO_H3100_LCD_3V_ON \
	\| GPIO_H3100_AUD_ON \
	\| GPIO_H3100_AUD_PWR_ON \
	\| GPIO_H3100_IR_ON \
	\| GPIO_H3100_IR_FSEL)

	static void __init h3100_map_io(void)
	{
	h3xxx_map_io();

	/* Initialize h3100-specific values here */
	GPCR = 0x0fffffff; /* All outputs are set low by default */
	GPDR = GPIO_H3600_COM_RTS \| GPIO_H3600_L3_CLOCK \|
	GPIO_H3600_L3_MODE \| GPIO_H3600_L3_DATA \|
	GPIO_H3600_CLK_SET1 \| GPIO_H3600_CLK_SET0 \|
	H3100_DIRECT_EGPIO;

	/* Older bootldrs put GPIO2-9 in alternate mode on the
	assumption that they are used for video */
	GAFR &= ~H3100_DIRECT_EGPIO;

	H3100_EGPIO = h3100_egpio;
	ipaq_model_ops = h3100_model_ops;
	}

	MACHINE_START(H3100, "Compaq iPAQ H3100")
	.phys_io = 0x80000000,
	.io_pg_offst = ((0xf8000000) >> 18) & 0xfffc,
	.boot_params = 0xc0000100,
	.map_io = h3100_map_io,
	.init_irq = sa1100_init_irq,
	.timer = &sa1100_timer,
	.init_machine = h3xxx_mach_init,
	MACHINE_END

	#endif /* CONFIG_SA1100_H3100 */

	/*********************** H3600 ***********************/

	#ifdef CONFIG_SA1100_H3600

	#define H3600_EGPIO ((volatile unsigned int )H3600_EGPIO_VIRT)
	static unsigned int h3600_egpio = EGPIO_H3600_RS232_ON;

	static void h3600_control_egpio(enum ipaq_egpio_type x, int setp)
	{
	unsigned int egpio = 0;
	unsigned long flags;

	switch (x) {
	case IPAQ_EGPIO_LCD_POWER:
	egpio \|= EGPIO_H3600_LCD_ON \|
	EGPIO_H3600_LCD_PCI \|
	EGPIO_H3600_LCD_5V_ON \|
	EGPIO_H3600_LVDD_ON;
	do_blank(setp);
	break;
	case IPAQ_EGPIO_LCD_ENABLE:
	break;
	case IPAQ_EGPIO_CODEC_NRESET:
	egpio \|= EGPIO_H3600_CODEC_NRESET;
	break;
	case IPAQ_EGPIO_AUDIO_ON:
	egpio \|= EGPIO_H3600_AUD_AMP_ON \|
	EGPIO_H3600_AUD_PWR_ON;
	break;
	case IPAQ_EGPIO_QMUTE:
	egpio \|= EGPIO_H3600_QMUTE;
	break;
	case IPAQ_EGPIO_OPT_NVRAM_ON:
	egpio \|= EGPIO_H3600_OPT_NVRAM_ON;
	break;
	case IPAQ_EGPIO_OPT_ON:
	egpio \|= EGPIO_H3600_OPT_ON;
	break;
	case IPAQ_EGPIO_CARD_RESET:
	egpio \|= EGPIO_H3600_CARD_RESET;
	break;
	case IPAQ_EGPIO_OPT_RESET:
	egpio \|= EGPIO_H3600_OPT_RESET;
	break;
	case IPAQ_EGPIO_IR_ON:
	egpio \|= EGPIO_H3600_IR_ON;
	break;
	case IPAQ_EGPIO_IR_FSEL:
	egpio \|= EGPIO_H3600_IR_FSEL;
	break;
	case IPAQ_EGPIO_RS232_ON:
	egpio \|= EGPIO_H3600_RS232_ON;
	break;
	case IPAQ_EGPIO_VPP_ON:
	egpio \|= EGPIO_H3600_VPP_ON;
	break;
	}

	if (egpio) {
	local_irq_save(flags);
	if (setp)
	h3600_egpio \|= egpio;
	else
	h3600_egpio &= ~egpio;
	H3600_EGPIO = h3600_egpio;
	local_irq_restore(flags);
	}
	}

	static unsigned long h3600_read_egpio(void)
	{
	return h3600_egpio;
	}

	static int h3600_pm_callback(int req)
	{
	if (ipaq_model_ops.pm_callback_aux)
	return ipaq_model_ops.pm_callback_aux(req);
	return 0;
	}

	static struct ipaq_model_ops h3600_model_ops __initdata = {
	.generic_name = "3600",
	.control = h3600_control_egpio,
	.read = h3600_read_egpio,
	.pm_callback = h3600_pm_callback
	};

	static void __init h3600_map_io(void)
	{
	h3xxx_map_io();

	/* Initialize h3600-specific values here */

	GPCR = 0x0fffffff; /* All outputs are set low by default */
	GPDR = GPIO_H3600_COM_RTS \| GPIO_H3600_L3_CLOCK \|
	GPIO_H3600_L3_MODE \| GPIO_H3600_L3_DATA \|
	GPIO_H3600_CLK_SET1 \| GPIO_H3600_CLK_SET0 \|
	GPIO_LDD15 \| GPIO_LDD14 \| GPIO_LDD13 \| GPIO_LDD12 \|
	GPIO_LDD11 \| GPIO_LDD10 \| GPIO_LDD9 \| GPIO_LDD8;

	H3600_EGPIO = h3600_egpio; /* Maintains across sleep? */
	ipaq_model_ops = h3600_model_ops;
	}

	MACHINE_START(H3600, "Compaq iPAQ H3600")
	.phys_io = 0x80000000,
	.io_pg_offst = ((0xf8000000) >> 18) & 0xfffc,
	.boot_params = 0xc0000100,
	.map_io = h3600_map_io,
	.init_irq = sa1100_init_irq,
	.timer = &sa1100_timer,
	.init_machine = h3xxx_mach_init,
	MACHINE_END

	#endif /* CONFIG_SA1100_H3600 */