uboot-phytec

// SPDX-License-Identifier: GPL-2.0+

/*

 * (C) Copyright 2012 SAMSUNG Electronics

 * Jaehoon Chung <jh80.chung@samsung.com>

 * Rajeshawari Shinde <rajeshwari.s@samsung.com>

 */

​

#include <bouncebuf.h>

#include <common.h>

#include <errno.h>

#include <malloc.h>

#include <memalign.h>

#include <mmc.h>

#include <dwmmc.h>

#include <wait_bit.h>

#include <power/regulator.h>

​

#define PAGE_SIZE 4096

​

static int dwmci_wait_reset(struct dwmci_host *host, u32 value)

{

    unsigned long timeout = 1000;

    u32 ctrl;

​

    dwmci_writel(host, DWMCI_CTRL, value);

​

    while (timeout--) {

        ctrl = dwmci_readl(host, DWMCI_CTRL);

        if (!(ctrl & DWMCI_RESET_ALL))

            return 1;

    }

    return 0;

}

​

static void dwmci_set_idma_desc(struct dwmci_idmac *idmac,

        u32 desc0, u32 desc1, u32 desc2)

{

    struct dwmci_idmac *desc = idmac;

​

    desc->flags = desc0;

    desc->cnt = desc1;

    desc->addr = desc2;

    desc->next_addr = (ulong)desc + sizeof(struct dwmci_idmac);

}

​

static void dwmci_prepare_data(struct dwmci_host *host,

                   struct mmc_data *data,

                   struct dwmci_idmac *cur_idmac,

                   void *bounce_buffer)

{

    unsigned long ctrl;

    unsigned int i = 0, flags, cnt, blk_cnt;

    ulong data_start, data_end;

​

​

    blk_cnt = data->blocks;

​

    dwmci_wait_reset(host, DWMCI_CTRL_FIFO_RESET);

​

    /* Clear IDMAC interrupt */

    dwmci_writel(host, DWMCI_IDSTS, 0xFFFFFFFF);

​

    data_start = (ulong)cur_idmac;