u-boot/drivers/mmc/rockchip_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

118 lines
2.9 KiB
C

// SPDX-License-Identifier: GPL-2.0+
/*
* (C) Copyright 2016 Fuzhou Rockchip Electronics Co., Ltd
*
* Rockchip SD Host Controller Interface
*/
#include <common.h>
#include <dm.h>
#include <dt-structs.h>
#include <linux/libfdt.h>
#include <malloc.h>
#include <mapmem.h>
#include <sdhci.h>
#include <clk.h>
/* 400KHz is max freq for card ID etc. Use that as min */
#define EMMC_MIN_FREQ 400000
struct rockchip_sdhc_plat {
#if CONFIG_IS_ENABLED(OF_PLATDATA)
struct dtd_rockchip_rk3399_sdhci_5_1 dtplat;
#endif
struct mmc_config cfg;
struct mmc mmc;
};
struct rockchip_sdhc {
struct sdhci_host host;
void *base;
};
static int arasan_sdhci_probe(struct udevice *dev)
{
struct mmc_uclass_priv *upriv = dev_get_uclass_priv(dev);
struct rockchip_sdhc_plat *plat = dev_get_platdata(dev);
struct rockchip_sdhc *prv = dev_get_priv(dev);
struct sdhci_host *host = &prv->host;
int max_frequency, ret;
struct clk clk;
#if CONFIG_IS_ENABLED(OF_PLATDATA)
struct dtd_rockchip_rk3399_sdhci_5_1 *dtplat = &plat->dtplat;
host->name = dev->name;
host->ioaddr = map_sysmem(dtplat->reg[0], dtplat->reg[1]);
max_frequency = dtplat->max_frequency;
ret = clk_get_by_index_platdata(dev, 0, dtplat->clocks, &clk);
#else
max_frequency = dev_read_u32_default(dev, "max-frequency", 0);
ret = clk_get_by_index(dev, 0, &clk);
#endif
if (!ret) {
ret = clk_set_rate(&clk, max_frequency);
if (IS_ERR_VALUE(ret))
printf("%s clk set rate fail!\n", __func__);
} else {
printf("%s fail to get clk\n", __func__);
}
host->quirks = SDHCI_QUIRK_WAIT_SEND_CMD;
host->max_clk = max_frequency;
/*
* The sdhci-driver only supports 4bit and 8bit, as sdhci_setup_cfg
* doesn't allow us to clear MMC_MODE_4BIT. Consequently, we don't
* check for other bus-width values.
*/
if (host->bus_width == 8)
host->host_caps |= MMC_MODE_8BIT;
ret = sdhci_setup_cfg(&plat->cfg, host, 0, EMMC_MIN_FREQ);
host->mmc = &plat->mmc;
if (ret)
return ret;
host->mmc->priv = &prv->host;
host->mmc->dev = dev;
upriv->mmc = host->mmc;
return sdhci_probe(dev);
}
static int arasan_sdhci_ofdata_to_platdata(struct udevice *dev)
{
#if !CONFIG_IS_ENABLED(OF_PLATDATA)
struct sdhci_host *host = dev_get_priv(dev);
host->name = dev->name;
host->ioaddr = dev_read_addr_ptr(dev);
host->bus_width = dev_read_u32_default(dev, "bus-width", 4);
#endif
return 0;
}
static int rockchip_sdhci_bind(struct udevice *dev)
{
struct rockchip_sdhc_plat *plat = dev_get_platdata(dev);
return sdhci_bind(dev, &plat->mmc, &plat->cfg);
}
static const struct udevice_id arasan_sdhci_ids[] = {
{ .compatible = "arasan,sdhci-5.1" },
{ }
};
U_BOOT_DRIVER(arasan_sdhci_drv) = {
.name = "rockchip_rk3399_sdhci_5_1",
.id = UCLASS_MMC,
.of_match = arasan_sdhci_ids,
.ofdata_to_platdata = arasan_sdhci_ofdata_to_platdata,
.ops = &sdhci_ops,
.bind = rockchip_sdhci_bind,
.probe = arasan_sdhci_probe,
.priv_auto_alloc_size = sizeof(struct rockchip_sdhc),
.platdata_auto_alloc_size = sizeof(struct rockchip_sdhc_plat),
};