mirror of
https://github.com/brain-hackers/u-boot-brain
synced 2024-08-21 17:38:51 +09:00
![Simon Glass](/assets/img/avatar_default.png)
At present dm/device.h includes the linux-compatible features. This requires including linux/compat.h which in turn includes a lot of headers. One of these is malloc.h which we thus end up including in every file in U-Boot. Apart from the inefficiency of this, it is problematic for sandbox which needs to use the system malloc() in some files. Move the compatibility features into a separate header file. Signed-off-by: Simon Glass <sjg@chromium.org>
201 lines
4.5 KiB
C
201 lines
4.5 KiB
C
// SPDX-License-Identifier: GPL-2.0+
|
|
/*
|
|
* Synopsys DesignWare Multimedia Card Interface driver
|
|
* extensions used in various Synopsys ARC devboards.
|
|
*
|
|
* Copyright (C) 2019 Synopsys
|
|
* Author: Eugeniy Paltsev <Eugeniy.Paltsev@synopsys.com>
|
|
*/
|
|
|
|
#include <common.h>
|
|
#include <clk.h>
|
|
#include <dm.h>
|
|
#include <dwmmc.h>
|
|
#include <errno.h>
|
|
#include <fdtdec.h>
|
|
#include <dm/device_compat.h>
|
|
#include <linux/libfdt.h>
|
|
#include <linux/err.h>
|
|
#include <malloc.h>
|
|
|
|
#define CLOCK_MIN 400000 /* 400 kHz */
|
|
#define FIFO_MIN 8
|
|
#define FIFO_MAX 4096
|
|
|
|
struct snps_dwmci_plat {
|
|
struct mmc_config cfg;
|
|
struct mmc mmc;
|
|
};
|
|
|
|
struct snps_dwmci_priv_data {
|
|
struct dwmci_host host;
|
|
u32 f_max;
|
|
};
|
|
|
|
static int snps_dwmmc_clk_setup(struct udevice *dev)
|
|
{
|
|
struct snps_dwmci_priv_data *priv = dev_get_priv(dev);
|
|
struct dwmci_host *host = &priv->host;
|
|
|
|
struct clk clk_ciu, clk_biu;
|
|
int ret;
|
|
|
|
ret = clk_get_by_name(dev, "ciu", &clk_ciu);
|
|
if (ret)
|
|
goto clk_err;
|
|
|
|
ret = clk_enable(&clk_ciu);
|
|
if (ret && ret != -ENOSYS && ret != -ENOTSUPP)
|
|
goto clk_err_ciu;
|
|
|
|
host->bus_hz = clk_get_rate(&clk_ciu);
|
|
if (host->bus_hz < CLOCK_MIN) {
|
|
ret = -EINVAL;
|
|
goto clk_err_ciu_dis;
|
|
}
|
|
|
|
ret = clk_get_by_name(dev, "biu", &clk_biu);
|
|
if (ret)
|
|
goto clk_err_ciu_dis;
|
|
|
|
ret = clk_enable(&clk_biu);
|
|
if (ret && ret != -ENOSYS && ret != -ENOTSUPP)
|
|
goto clk_err_biu;
|
|
|
|
return 0;
|
|
|
|
clk_err_biu:
|
|
clk_free(&clk_biu);
|
|
clk_err_ciu_dis:
|
|
clk_disable(&clk_ciu);
|
|
clk_err_ciu:
|
|
clk_free(&clk_ciu);
|
|
clk_err:
|
|
dev_err(dev, "failed to setup clocks, ret %d\n", ret);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static int snps_dwmmc_ofdata_to_platdata(struct udevice *dev)
|
|
{
|
|
struct snps_dwmci_priv_data *priv = dev_get_priv(dev);
|
|
struct dwmci_host *host = &priv->host;
|
|
u32 fifo_depth;
|
|
int ret;
|
|
|
|
host->ioaddr = devfdt_get_addr_ptr(dev);
|
|
|
|
/*
|
|
* If fifo-depth is unset don't set fifoth_val - we will try to
|
|
* auto detect it.
|
|
*/
|
|
ret = dev_read_u32(dev, "fifo-depth", &fifo_depth);
|
|
if (!ret) {
|
|
if (fifo_depth < FIFO_MIN || fifo_depth > FIFO_MAX)
|
|
return -EINVAL;
|
|
|
|
host->fifoth_val = MSIZE(0x2) |
|
|
RX_WMARK(fifo_depth / 2 - 1) |
|
|
TX_WMARK(fifo_depth / 2);
|
|
}
|
|
|
|
host->buswidth = dev_read_u32_default(dev, "bus-width", 4);
|
|
if (host->buswidth != 1 && host->buswidth != 4 && host->buswidth != 8)
|
|
return -EINVAL;
|
|
|
|
/*
|
|
* If max-frequency is unset don't set priv->f_max - we will use
|
|
* host->bus_hz in probe() instead.
|
|
*/
|
|
ret = dev_read_u32(dev, "max-frequency", &priv->f_max);
|
|
if (!ret && priv->f_max < CLOCK_MIN)
|
|
return -EINVAL;
|
|
|
|
host->fifo_mode = dev_read_bool(dev, "fifo-mode");
|
|
host->name = dev->name;
|
|
host->dev_index = 0;
|
|
host->priv = priv;
|
|
|
|
return 0;
|
|
}
|
|
|
|
int snps_dwmmc_getcd(struct udevice *dev)
|
|
{
|
|
struct snps_dwmci_priv_data *priv = dev_get_priv(dev);
|
|
struct dwmci_host *host = &priv->host;
|
|
|
|
return !(dwmci_readl(host, DWMCI_CDETECT) & 1);
|
|
}
|
|
|
|
struct dm_mmc_ops snps_dwmci_dm_ops;
|
|
|
|
static int snps_dwmmc_probe(struct udevice *dev)
|
|
{
|
|
#ifdef CONFIG_BLK
|
|
struct snps_dwmci_plat *plat = dev_get_platdata(dev);
|
|
#endif
|
|
struct mmc_uclass_priv *upriv = dev_get_uclass_priv(dev);
|
|
struct snps_dwmci_priv_data *priv = dev_get_priv(dev);
|
|
struct dwmci_host *host = &priv->host;
|
|
unsigned int clock_max;
|
|
int ret;
|
|
|
|
/* Extend generic 'dm_dwmci_ops' with our 'getcd' implementation */
|
|
memcpy(&snps_dwmci_dm_ops, &dm_dwmci_ops, sizeof(struct dm_mmc_ops));
|
|
snps_dwmci_dm_ops.get_cd = snps_dwmmc_getcd;
|
|
|
|
ret = snps_dwmmc_clk_setup(dev);
|
|
if (ret)
|
|
return ret;
|
|
|
|
if (!priv->f_max)
|
|
clock_max = host->bus_hz;
|
|
else
|
|
clock_max = min_t(unsigned int, host->bus_hz, priv->f_max);
|
|
|
|
#ifdef CONFIG_BLK
|
|
dwmci_setup_cfg(&plat->cfg, host, clock_max, CLOCK_MIN);
|
|
host->mmc = &plat->mmc;
|
|
#else
|
|
ret = add_dwmci(host, clock_max, CLOCK_MIN);
|
|
if (ret)
|
|
return ret;
|
|
#endif
|
|
host->mmc->priv = &priv->host;
|
|
upriv->mmc = host->mmc;
|
|
host->mmc->dev = dev;
|
|
|
|
return dwmci_probe(dev);
|
|
}
|
|
|
|
static int snps_dwmmc_bind(struct udevice *dev)
|
|
{
|
|
#ifdef CONFIG_BLK
|
|
struct snps_dwmci_plat *plat = dev_get_platdata(dev);
|
|
int ret;
|
|
|
|
ret = dwmci_bind(dev, &plat->mmc, &plat->cfg);
|
|
if (ret)
|
|
return ret;
|
|
#endif
|
|
|
|
return 0;
|
|
}
|
|
|
|
static const struct udevice_id snps_dwmmc_ids[] = {
|
|
{ .compatible = "snps,dw-mshc" },
|
|
{ }
|
|
};
|
|
|
|
U_BOOT_DRIVER(snps_dwmmc_drv) = {
|
|
.name = "snps_dw_mmc",
|
|
.id = UCLASS_MMC,
|
|
.of_match = snps_dwmmc_ids,
|
|
.ofdata_to_platdata = snps_dwmmc_ofdata_to_platdata,
|
|
.ops = &snps_dwmci_dm_ops,
|
|
.bind = snps_dwmmc_bind,
|
|
.probe = snps_dwmmc_probe,
|
|
.priv_auto_alloc_size = sizeof(struct snps_dwmci_priv_data),
|
|
.platdata_auto_alloc_size = sizeof(struct snps_dwmci_plat),
|
|
};
|