/*  * iPAQ H5400 MMC ASIC lowlevel * * Copyright 2002 Hewlett-Packard Company * * Use consistent with the GNU GPL is permitted, * provided that this copyright notice is * preserved in its entirety in all copies and derived works. * * HEWLETT-PACKARD COMPANY 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 *          7 July 2003 */#include <linux/module.h>#include <linux/version.h>#include <linux/init.h>#include <linux/sched.h>#include <linux/interrupt.h>#include <linux/proc_fs.h>#include <linux/delay.h>#include <asm/irq.h>       #include <asm/io.h>        /* ioremap() */#include <asm/unaligned.h>#include <asm/mach-types.h>#include <asm/arch/hardware.h>#include <asm/arch/h5400-gpio.h>#include <asm/arch/h5400-asic.h>#include <asm/arch/h5400-irqs.h>#include <linux/mmc/mmc_ll.h>#include "mmc_samsung.h"static int h5400_mmc_slot_init(struct s3c_mmc_lowlevel *lowlevel){	printk("%s", __FUNCTION__);	/* enable power to slot */	SET_H5400_GPIO(POWER_SD_N, 1);	/* sd_detect (wakeup) interrupt on both edges */	H5400_ASIC_SET_BIT(H5400_ASIC_GPIO_INT3, 0xf);	/* set filtering width to 0xF + 1 */	H5400_ASIC_CLEAR_BIT(H5400_ASIC_GPIO_INT3, (0xFFFF << 16));	H5400_ASIC_SET_BIT(H5400_ASIC_GPIO_FLTCONFIG7, (0xf << 16));	H5400_ASIC_SET_BIT(H5400_ASIC_GPIO_ENINT1, H5400_ASIC_GPIO_ENINT1_SDWAKE);	/* turn on data pullups */	H5400_ASIC_CLEAR_BIT(H5400_ASIC_GPIO_SPCR, H5400_ASIC_GPIO_SPCR_SDPUCR);	/* enable pull up */	H5400_ASIC_CLEAR_BIT(H5400_ASIC_GPIO_GPA_PUP, H5400_ASIC_GPIO_GPA_SD_DETECT_N);	/* enable clock to SD */	H5400_ASIC_SET_BIT(H5400_ASIC_CPM_ClockControl, H5400_ASIC_CPM_CLKCON_SD_CLKEN);	return 0;}static int h5400_mmc_slot_cleanup(struct s3c_mmc_lowlevel *lowlevel){	printk("%s", __FUNCTION__);	/* disable power to slot */	SET_H5400_GPIO(POWER_SD_N, 0);	H5400_ASIC_CLEAR_BIT(H5400_ASIC_GPIO_ENINT1, H5400_ASIC_GPIO_ENINT1_SDWAKE);	/* disable pull up */	H5400_ASIC_SET_BIT(H5400_ASIC_GPIO_GPA_PUP,  H5400_ASIC_GPIO_GPA_SD_DETECT_N);	/* disable clock to SD */	H5400_ASIC_CLEAR_BIT(H5400_ASIC_CPM_ClockControl, H5400_ASIC_CPM_CLKCON_SD_CLKEN);		return 0;}static int h5400_mmc_slot_is_empty(struct s3c_mmc_lowlevel *lowlevel){	int retval = (h5400_asic_read_register(H5400_ASIC_GPIO_GPA_DAT) & H5400_ASIC_GPIO_GPA_SD_DETECT_N) ? 1 : 0;	MMC_DEBUG(2, " is_empty=%d", retval);	return retval;}struct s3c_mmc_lowlevel h5400_mmc_lowlevel = {	.name          = "h5400_mmc",	.sdi_irq       = IRQ_H5400_SD,	.detect_irq    = IRQ_H5400_SD_WAKEUP,	.slot_init     = h5400_mmc_slot_init,	.slot_cleanup  = h5400_mmc_slot_cleanup,	.slot_is_empty = h5400_mmc_slot_is_empty};static int __init h5400_mmc_init(void){        int retval;	if (!machine_is_h5400())		return -ENODEV;	h5400_mmc_lowlevel.sd_base = ioremap(H5400_ASIC_PHYS + _H5400_ASIC_SDI_Base, 0x10000) + 0x30;	retval = s3c_mmc_register_slot(&h5400_mmc_lowlevel);	if ( retval < 0 )		printk(KERN_INFO "%s: unable to register slot\n", __FUNCTION__);	return retval;}void __exit h5400_mmc_cleanup(void){	MMC_DEBUG(0,"");	s3c_mmc_unregister_slot();}module_init(h5400_mmc_init);module_exit(h5400_mmc_cleanup);MODULE_AUTHOR("Jamey Hicks <jamey.hicks@hp.com>");MODULE_LICENSE("GPL");MODULE_DESCRIPTION("iPAQ H5400 SD/MMC driver ");