u-boot/drivers/mmc/atmel_sdhci.c
Tom Rini 83d290c56f SPDX: Convert all of our single license tags to Linux Kernel style
When U-Boot started using SPDX tags we were among the early adopters and
there weren't a lot of other examples to borrow from.  So we picked the
area of the file that usually had a full license text and replaced it
with an appropriate SPDX-License-Identifier: entry.  Since then, the
Linux Kernel has adopted SPDX tags and they place it as the very first
line in a file (except where shebangs are used, then it's second line)
and with slightly different comment styles than us.

In part due to community overlap, in part due to better tag visibility
and in part for other minor reasons, switch over to that style.

This commit changes all instances where we have a single declared
license in the tag as both the before and after are identical in tag
contents.  There's also a few places where I found we did not have a tag
and have introduced one.

Signed-off-by: Tom Rini <trini@konsulko.com>
2018-05-07 09:34:12 -04:00

128 lines
2.6 KiB
C

// SPDX-License-Identifier: GPL-2.0+
/*
* Copyright (C) 2015 Atmel Corporation
* Wenyou.Yang <wenyou.yang@atmel.com>
*/
#include <common.h>
#include <clk.h>
#include <dm.h>
#include <malloc.h>
#include <sdhci.h>
#include <asm/arch/clk.h>
#define ATMEL_SDHC_MIN_FREQ 400000
#define ATMEL_SDHC_GCK_RATE 240000000
#ifndef CONFIG_DM_MMC
int atmel_sdhci_init(void *regbase, u32 id)
{
struct sdhci_host *host;
u32 max_clk, min_clk = ATMEL_SDHC_MIN_FREQ;
host = (struct sdhci_host *)calloc(1, sizeof(struct sdhci_host));
if (!host) {
printf("%s: sdhci_host calloc failed\n", __func__);
return -ENOMEM;
}
host->name = "atmel_sdhci";
host->ioaddr = regbase;
host->quirks = SDHCI_QUIRK_WAIT_SEND_CMD;
max_clk = at91_get_periph_generated_clk(id);
if (!max_clk) {
printf("%s: Failed to get the proper clock\n", __func__);
free(host);
return -ENODEV;
}
host->max_clk = max_clk;
add_sdhci(host, 0, min_clk);
return 0;
}
#else
DECLARE_GLOBAL_DATA_PTR;
struct atmel_sdhci_plat {
struct mmc_config cfg;
struct mmc mmc;
};
static int atmel_sdhci_probe(struct udevice *dev)
{
struct mmc_uclass_priv *upriv = dev_get_uclass_priv(dev);
struct atmel_sdhci_plat *plat = dev_get_platdata(dev);
struct sdhci_host *host = dev_get_priv(dev);
u32 max_clk;
struct clk clk;
int ret;
ret = clk_get_by_index(dev, 0, &clk);
if (ret)
return ret;
ret = clk_enable(&clk);
if (ret)
return ret;
host->name = dev->name;
host->ioaddr = (void *)devfdt_get_addr(dev);
host->quirks = SDHCI_QUIRK_WAIT_SEND_CMD;
host->bus_width = fdtdec_get_int(gd->fdt_blob, dev_of_offset(dev),
"bus-width", 4);
ret = clk_get_by_index(dev, 1, &clk);
if (ret)
return ret;
ret = clk_set_rate(&clk, ATMEL_SDHC_GCK_RATE);
if (ret)
return ret;
max_clk = clk_get_rate(&clk);
if (!max_clk)
return -EINVAL;
host->max_clk = max_clk;
ret = sdhci_setup_cfg(&plat->cfg, host, 0, ATMEL_SDHC_MIN_FREQ);
if (ret)
return ret;
host->mmc = &plat->mmc;
host->mmc->dev = dev;
host->mmc->priv = host;
upriv->mmc = host->mmc;
clk_free(&clk);
return sdhci_probe(dev);
}
static int atmel_sdhci_bind(struct udevice *dev)
{
struct atmel_sdhci_plat *plat = dev_get_platdata(dev);
return sdhci_bind(dev, &plat->mmc, &plat->cfg);
}
static const struct udevice_id atmel_sdhci_ids[] = {
{ .compatible = "atmel,sama5d2-sdhci" },
{ }
};
U_BOOT_DRIVER(atmel_sdhci_drv) = {
.name = "atmel_sdhci",
.id = UCLASS_MMC,
.of_match = atmel_sdhci_ids,
.ops = &sdhci_ops,
.bind = atmel_sdhci_bind,
.probe = atmel_sdhci_probe,
.priv_auto_alloc_size = sizeof(struct sdhci_host),
.platdata_auto_alloc_size = sizeof(struct atmel_sdhci_plat),
};
#endif