81 lines
2 KiB
C
81 lines
2 KiB
C
|
/*
|
||
|
|
* Driver for sunxi SD/MMC host controllers
|
||
|
|
* (C) Copyright 2012-2017 lixiang <lixiang@allwinnertech.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.
|
||
|
|
*/
|
||
|
|
|
||
|
|
#include <linux/clk.h>
|
||
|
|
#include <linux/clk/sunxi.h>
|
||
|
|
|
||
|
|
#include <linux/gpio.h>
|
||
|
|
#include <linux/platform_device.h>
|
||
|
|
#include <linux/spinlock.h>
|
||
|
|
#include <linux/scatterlist.h>
|
||
|
|
#include <linux/dma-mapping.h>
|
||
|
|
#include <linux/slab.h>
|
||
|
|
#include <linux/reset.h>
|
||
|
|
|
||
|
|
#include <linux/of_address.h>
|
||
|
|
#include <linux/of_gpio.h>
|
||
|
|
#include <linux/of_platform.h>
|
||
|
|
#include <linux/regulator/consumer.h>
|
||
|
|
|
||
|
|
|
||
|
|
#include <linux/mmc/host.h>
|
||
|
|
#include <linux/mmc/sd.h>
|
||
|
|
#include <linux/mmc/sdio.h>
|
||
|
|
#include <linux/mmc/mmc.h>
|
||
|
|
#include <linux/mmc/core.h>
|
||
|
|
#include <linux/mmc/card.h>
|
||
|
|
#include <linux/mmc/slot-gpio.h>
|
||
|
|
|
||
|
|
#include "sunxi-mmc.h"
|
||
|
|
#include "sunxi-mmc-export.h"
|
||
|
|
|
||
|
|
#define SUNXI_MAX_CONTROL 4
|
||
|
|
|
||
|
|
static struct sunxi_mmc_host *sunxi_hosts[SUNXI_MAX_CONTROL]={NULL};
|
||
|
|
|
||
|
|
|
||
|
|
void sunxi_mmc_rescan_card(unsigned id)
|
||
|
|
{
|
||
|
|
|
||
|
|
BUG_ON(id > SUNXI_MAX_CONTROL);
|
||
|
|
BUG_ON(sunxi_hosts[id] == NULL);
|
||
|
|
if (sunxi_hosts[id] == NULL){
|
||
|
|
dev_err(mmc_dev(sunxi_hosts[id]->mmc),"%s:can't find the host\n",__FUNCTION__);
|
||
|
|
return;
|
||
|
|
}
|
||
|
|
mmc_detect_change(sunxi_hosts[id]->mmc, 0);
|
||
|
|
}
|
||
|
|
EXPORT_SYMBOL_GPL(sunxi_mmc_rescan_card);
|
||
|
|
|
||
|
|
void sunxi_mmc_reg_ex_res_inter(struct sunxi_mmc_host *host,u32 phy_id)
|
||
|
|
{
|
||
|
|
BUG_ON(phy_id > SUNXI_MAX_CONTROL);
|
||
|
|
sunxi_hosts[phy_id] = host;
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
int sunxi_mmc_check_r1_ready(struct mmc_host* mmc, unsigned ms)
|
||
|
|
{
|
||
|
|
struct sunxi_mmc_host *host = mmc_priv(mmc);
|
||
|
|
unsigned long expire = jiffies + msecs_to_jiffies(ms);
|
||
|
|
do {
|
||
|
|
if (!(mmc_readl(host, REG_STAS) & SDXC_CARD_DATA_BUSY))
|
||
|
|
break;
|
||
|
|
} while (time_before(jiffies, expire));
|
||
|
|
|
||
|
|
if ((mmc_readl(host, REG_STAS) & SDXC_CARD_DATA_BUSY)) {
|
||
|
|
dev_err(mmc_dev(mmc), "wait r1 rdy %d ms timeout\n", ms);
|
||
|
|
return -1;
|
||
|
|
} else
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
EXPORT_SYMBOL_GPL(sunxi_mmc_check_r1_ready);
|
||
|
|
|