/*
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* Sunxi SD/MMC host driver
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*
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* Copyright (C) 2015 AllWinnertech Ltd.
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* Author: lixiang <lixiang@allwinnertech>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*
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* This program is distributed "as is" WITHOUT ANY WARRANTY of any
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* kind, whether express or implied; without even the implied warranty
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* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*/
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#include <linux/clk.h>
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#include <linux/clk/sunxi.h>
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#include <linux/gpio.h>
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#include <linux/platform_device.h>
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#include <linux/spinlock.h>
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#include <linux/scatterlist.h>
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#include <linux/dma-mapping.h>
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#include <linux/slab.h>
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#include <linux/reset.h>
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#include <linux/of_address.h>
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#include <linux/of_gpio.h>
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#include <linux/of_platform.h>
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#include <linux/regulator/consumer.h>
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#include <linux/mmc/host.h>
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#include <linux/mmc/sd.h>
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#include <linux/mmc/sdio.h>
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#include <linux/mmc/mmc.h>
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#include <linux/mmc/core.h>
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#include <linux/mmc/card.h>
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#include <linux/mmc/slot-gpio.h>
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#include "sunxi-mmc.h"
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#include "sunxi-mmc-export.h"
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#define SUNXI_MAX_CONTROL 4
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static struct sunxi_mmc_host *sunxi_hosts[SUNXI_MAX_CONTROL] = { NULL };
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void sunxi_mmc_rescan_card(unsigned id)
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{
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if (id > SUNXI_MAX_CONTROL) {
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pr_err("%d id over max id", id);
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return;
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}
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if (sunxi_hosts[id] == NULL) {
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pr_err("sunxi_hosts[%d] should not be null", id);
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return;
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}
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if (sunxi_hosts[id] == NULL) {
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dev_err(mmc_dev(sunxi_hosts[id]->mmc),
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"%s:can't find the host\n", __func__);
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return;
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}
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mmc_detect_change(sunxi_hosts[id]->mmc, 0);
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}
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EXPORT_SYMBOL_GPL(sunxi_mmc_rescan_card);
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void sunxi_mmc_reg_ex_res_inter(struct sunxi_mmc_host *host, u32 phy_id)
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{
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if (phy_id > SUNXI_MAX_CONTROL) {
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pr_err("%d id over max id", phy_id);
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return;
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}
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sunxi_hosts[phy_id] = host;
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}
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EXPORT_SYMBOL_GPL(sunxi_mmc_reg_ex_res_inter);
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int sunxi_mmc_check_r1_ready(struct mmc_host *mmc, unsigned ms)
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{
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struct sunxi_mmc_host *host = mmc_priv(mmc);
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unsigned long expire = jiffies + msecs_to_jiffies(ms);
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do {
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if (!(mmc_readl(host, REG_STAS) & SDXC_CARD_DATA_BUSY))
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break;
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} while (time_before(jiffies, expire));
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if ((mmc_readl(host, REG_STAS) & SDXC_CARD_DATA_BUSY)) {
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dev_err(mmc_dev(mmc), "wait r1 rdy %d ms timeout\n", ms);
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return -1;
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} else
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return 0;
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}
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EXPORT_SYMBOL_GPL(sunxi_mmc_check_r1_ready);
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