/*
* linux/drivers/mmc/host/msm_sdcc.c - Qualcomm MSM 7X00A SDCC Driver
*
* Copyright (C) 2007 Google Inc,
* Copyright (C) 2003 Deep Blue Solutions, Ltd, All Rights Reserved.
*
* 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.
*
* Based on mmci.c
*
* Author: San Mehat (san@android.com)
*
*/
#include <linux/module.h>
#include <linux/moduleparam.h>
#include <linux/init.h>
#include <linux/ioport.h>
#include <linux/device.h>
#include <linux/interrupt.h>
#include <linux/delay.h>
#include <linux/err.h>
#include <linux/highmem.h>
#include <linux/log2.h>
#include <linux/mmc/host.h>
#include <linux/mmc/card.h>
#include <linux/clk.h>
#include <linux/scatterlist.h>
#include <linux/platform_device.h>
#include <linux/dma-mapping.h>
#include <linux/debugfs.h>
#include <linux/io.h>
#include <linux/memory.h>
#include <asm/cacheflush.h>
#include <asm/div64.h>
#include <asm/sizes.h>
#include <mach/mmc.h>
#include <mach/msm_iomap.h>
#include <mach/dma.h>
#include "msm_sdcc.h"
#define DRIVER_NAME "msm-sdcc"
static unsigned int msmsdcc_fmin = 144000;
static unsigned int msmsdcc_fmax = 50000000;
static unsigned int msmsdcc_4bit = 1;
static unsigned int msmsdcc_pwrsave = 1;
static unsigned int msmsdcc_piopoll = 1;
static unsigned int msmsdcc_sdioirq;
#define PIO_SPINMAX 30
#define CMD_SPINMAX 20
static void
msmsdcc_start_command(struct msmsdcc_host *host, struct mmc_command *cmd,
u32 c);
static void
msmsdcc_request_end(struct msmsdcc_host *host, struct mmc_request *mrq)
{
writel(0, host->base + MMCICOMMAND);
BUG_ON(host->curr.data);
host->curr.mrq = NULL;
host->curr.cmd = NULL;
if (mrq->data)
mrq->data->bytes_xfered = host->curr.data_xfered;
if (mrq->cmd->error == -ETIMEDOUT)
mdelay(5);
/*
* Need to drop the host lock here; mmc_request_done may call
* back into the driver...
*/
spin_unlock(&host->lock);
mmc_request_done(host->mmc, mrq);
spin_lock(&host->lock);
}
static void
msmsdcc_stop_data(struct msmsdcc_host *host)
{
writel(0, host->base + MMCIDATACTRL);
host->curr.data = NULL;
host->curr.got_dataend = host->curr.got_datablkend = 0;
}
uint32_t msmsdcc_fifo_addr(struct msmsdcc_host *host)
{
switch (host->pdev_id) {
case 1:
return MSM_SDC1_PHYS + MMCIFIFO;
case 2:</