uniphier-sd.c
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// SPDX-License-Identifier: GPL-2.0+
/*
* Copyright (C) 2016 Socionext Inc.
* Author: Masahiro Yamada <yamada.masahiro@socionext.com>
*/
#include <common.h>
#include <clk.h>
#include <fdtdec.h>
#include <malloc.h>
#include <mmc.h>
#include <dm.h>
#include <dm/device_compat.h>
#include <linux/compat.h>
#include <linux/dma-direction.h>
#include <linux/io.h>
#include <linux/sizes.h>
#include <power/regulator.h>
#include <asm/unaligned.h>
#include "tmio-common.h"
static const struct dm_mmc_ops uniphier_sd_ops = {
.send_cmd = tmio_sd_send_cmd,
.set_ios = tmio_sd_set_ios,
.get_cd = tmio_sd_get_cd,
};
static const struct udevice_id uniphier_sd_match[] = {
{ .compatible = "socionext,uniphier-sd-v2.91" },
{ .compatible = "socionext,uniphier-sd-v3.1" },
{ .compatible = "socionext,uniphier-sd-v3.1.1" },
{ /* sentinel */ }
};
static ulong uniphier_sd_clk_get_rate(struct tmio_sd_priv *priv)
{
#if CONFIG_IS_ENABLED(CLK)
return clk_get_rate(&priv->clk);
#elif CONFIG_SPL_BUILD
return 100000000;
#else
return 0;
#endif
}
static int uniphier_sd_probe(struct udevice *dev)
{
struct tmio_sd_priv *priv = dev_get_priv(dev);
priv->clk_get_rate = uniphier_sd_clk_get_rate;
priv->read_poll_flag = TMIO_SD_DMA_INFO1_END_RD2;
#ifndef CONFIG_SPL_BUILD
int ret;
ret = clk_get_by_index(dev, 0, &priv->clk);
if (ret < 0) {
dev_err(dev, "failed to get host clock\n");
return ret;
}
/* set to max rate */
ret = clk_set_rate(&priv->clk, ULONG_MAX);
if (ret < 0) {
dev_err(dev, "failed to set rate for host clock\n");
clk_free(&priv->clk);
return ret;
}
ret = clk_enable(&priv->clk);
if (ret) {
dev_err(dev, "failed to enable host clock\n");
return ret;
}
#endif
return tmio_sd_probe(dev, 0);
}
U_BOOT_DRIVER(uniphier_mmc) = {
.name = "uniphier-mmc",
.id = UCLASS_MMC,
.of_match = uniphier_sd_match,
.bind = tmio_sd_bind,
.probe = uniphier_sd_probe,
.priv_auto_alloc_size = sizeof(struct tmio_sd_priv),
.platdata_auto_alloc_size = sizeof(struct tmio_sd_plat),
.ops = &uniphier_sd_ops,
};