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u-boot-brain/drivers/reset/reset-uniphier.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

372 lines
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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 <dm.h>
#include <reset-uclass.h>
#include <linux/bitops.h>
#include <linux/io.h>
#include <linux/sizes.h>
struct uniphier_reset_data {
unsigned int id;
unsigned int reg;
unsigned int bit;
unsigned int flags;
#define UNIPHIER_RESET_ACTIVE_LOW BIT(0)
};
#define UNIPHIER_RESET_ID_END (unsigned int)(-1)
#define UNIPHIER_RESET_END \
{ .id = UNIPHIER_RESET_ID_END }
#define UNIPHIER_RESET(_id, _reg, _bit) \
{ \
.id = (_id), \
.reg = (_reg), \
.bit = (_bit), \
}
#define UNIPHIER_RESETX(_id, _reg, _bit) \
{ \
.id = (_id), \
.reg = (_reg), \
.bit = (_bit), \
.flags = UNIPHIER_RESET_ACTIVE_LOW, \
}
/* System reset data */
static const struct uniphier_reset_data uniphier_pro4_sys_reset_data[] = {
UNIPHIER_RESETX(2, 0x2000, 2), /* NAND */
UNIPHIER_RESETX(6, 0x2000, 12), /* ETHER */
UNIPHIER_RESETX(8, 0x2000, 10), /* STDMAC */
UNIPHIER_RESETX(12, 0x2000, 6), /* GIO */
UNIPHIER_RESETX(14, 0x2000, 17), /* USB30 */
UNIPHIER_RESETX(15, 0x2004, 17), /* USB31 */
UNIPHIER_RESET_END,
};
static const struct uniphier_reset_data uniphier_pxs2_sys_reset_data[] = {
UNIPHIER_RESETX(2, 0x2000, 2), /* NAND */
UNIPHIER_RESETX(6, 0x2000, 12), /* ETHER */
UNIPHIER_RESETX(8, 0x2000, 10), /* STDMAC */
UNIPHIER_RESETX(14, 0x2000, 17), /* USB30 */
UNIPHIER_RESETX(15, 0x2004, 17), /* USB31 */
UNIPHIER_RESETX(16, 0x2014, 4), /* USB30-PHY0 */
UNIPHIER_RESETX(17, 0x2014, 0), /* USB30-PHY1 */
UNIPHIER_RESETX(18, 0x2014, 2), /* USB30-PHY2 */
UNIPHIER_RESETX(20, 0x2014, 5), /* USB31-PHY0 */
UNIPHIER_RESETX(21, 0x2014, 1), /* USB31-PHY1 */
UNIPHIER_RESETX(28, 0x2014, 12), /* SATA */
UNIPHIER_RESET(29, 0x2014, 8), /* SATA-PHY (active high) */
UNIPHIER_RESET_END,
};
static const struct uniphier_reset_data uniphier_ld20_sys_reset_data[] = {
UNIPHIER_RESETX(2, 0x200c, 0), /* NAND */
UNIPHIER_RESETX(4, 0x200c, 2), /* eMMC */
UNIPHIER_RESETX(6, 0x200c, 6), /* ETHER */
UNIPHIER_RESETX(8, 0x200c, 8), /* STDMAC */
UNIPHIER_RESETX(12, 0x200c, 5), /* GIO */
UNIPHIER_RESETX(16, 0x200c, 12), /* USB30-PHY0 */
UNIPHIER_RESETX(17, 0x200c, 13), /* USB30-PHY1 */
UNIPHIER_RESETX(18, 0x200c, 14), /* USB30-PHY2 */
UNIPHIER_RESETX(19, 0x200c, 15), /* USB30-PHY3 */
UNIPHIER_RESET_END,
};
static const struct uniphier_reset_data uniphier_pxs3_sys_reset_data[] = {
UNIPHIER_RESETX(2, 0x200c, 0), /* NAND */
UNIPHIER_RESETX(4, 0x200c, 2), /* eMMC */
UNIPHIER_RESETX(6, 0x200c, 9), /* ETHER0 */
UNIPHIER_RESETX(7, 0x200c, 10), /* ETHER1 */
UNIPHIER_RESETX(8, 0x200c, 12), /* STDMAC */
UNIPHIER_RESETX(12, 0x200c, 5), /* USB30 (GIO0) */
UNIPHIER_RESETX(13, 0x200c, 6), /* USB31 (GIO1) */
UNIPHIER_RESETX(16, 0x200c, 16), /* USB30-PHY */
UNIPHIER_RESETX(20, 0x200c, 17), /* USB31-PHY */
UNIPHIER_RESET_END,
};
/* Media I/O reset data */
#define UNIPHIER_MIO_RESET_SD(id, ch) \
UNIPHIER_RESETX((id), 0x110 + 0x200 * (ch), 0)
#define UNIPHIER_MIO_RESET_SD_BRIDGE(id, ch) \
UNIPHIER_RESETX((id), 0x110 + 0x200 * (ch), 26)
#define UNIPHIER_MIO_RESET_EMMC_HW_RESET(id, ch) \
UNIPHIER_RESETX((id), 0x80 + 0x200 * (ch), 0)
#define UNIPHIER_MIO_RESET_USB2(id, ch) \
UNIPHIER_RESETX((id), 0x114 + 0x200 * (ch), 0)
#define UNIPHIER_MIO_RESET_USB2_BRIDGE(id, ch) \
UNIPHIER_RESETX((id), 0x110 + 0x200 * (ch), 24)
#define UNIPHIER_MIO_RESET_DMAC(id) \
UNIPHIER_RESETX((id), 0x110, 17)
static const struct uniphier_reset_data uniphier_mio_reset_data[] = {
UNIPHIER_MIO_RESET_SD(0, 0),
UNIPHIER_MIO_RESET_SD(1, 1),
UNIPHIER_MIO_RESET_SD(2, 2),
UNIPHIER_MIO_RESET_SD_BRIDGE(3, 0),
UNIPHIER_MIO_RESET_SD_BRIDGE(4, 1),
UNIPHIER_MIO_RESET_SD_BRIDGE(5, 2),
UNIPHIER_MIO_RESET_EMMC_HW_RESET(6, 1),
UNIPHIER_MIO_RESET_DMAC(7),
UNIPHIER_MIO_RESET_USB2(8, 0),
UNIPHIER_MIO_RESET_USB2(9, 1),
UNIPHIER_MIO_RESET_USB2(10, 2),
UNIPHIER_MIO_RESET_USB2(11, 3),
UNIPHIER_MIO_RESET_USB2_BRIDGE(12, 0),
UNIPHIER_MIO_RESET_USB2_BRIDGE(13, 1),
UNIPHIER_MIO_RESET_USB2_BRIDGE(14, 2),
UNIPHIER_MIO_RESET_USB2_BRIDGE(15, 3),
UNIPHIER_RESET_END,
};
/* Peripheral reset data */
#define UNIPHIER_PERI_RESET_UART(id, ch) \
UNIPHIER_RESETX((id), 0x114, 19 + (ch))
#define UNIPHIER_PERI_RESET_I2C(id, ch) \
UNIPHIER_RESETX((id), 0x114, 5 + (ch))
#define UNIPHIER_PERI_RESET_FI2C(id, ch) \
UNIPHIER_RESETX((id), 0x114, 24 + (ch))
static const struct uniphier_reset_data uniphier_ld4_peri_reset_data[] = {
UNIPHIER_PERI_RESET_UART(0, 0),
UNIPHIER_PERI_RESET_UART(1, 1),
UNIPHIER_PERI_RESET_UART(2, 2),
UNIPHIER_PERI_RESET_UART(3, 3),
UNIPHIER_PERI_RESET_I2C(4, 0),
UNIPHIER_PERI_RESET_I2C(5, 1),
UNIPHIER_PERI_RESET_I2C(6, 2),
UNIPHIER_PERI_RESET_I2C(7, 3),
UNIPHIER_PERI_RESET_I2C(8, 4),
UNIPHIER_RESET_END,
};
static const struct uniphier_reset_data uniphier_pro4_peri_reset_data[] = {
UNIPHIER_PERI_RESET_UART(0, 0),
UNIPHIER_PERI_RESET_UART(1, 1),
UNIPHIER_PERI_RESET_UART(2, 2),
UNIPHIER_PERI_RESET_UART(3, 3),
UNIPHIER_PERI_RESET_FI2C(4, 0),
UNIPHIER_PERI_RESET_FI2C(5, 1),
UNIPHIER_PERI_RESET_FI2C(6, 2),
UNIPHIER_PERI_RESET_FI2C(7, 3),
UNIPHIER_PERI_RESET_FI2C(8, 4),
UNIPHIER_PERI_RESET_FI2C(9, 5),
UNIPHIER_PERI_RESET_FI2C(10, 6),
UNIPHIER_RESET_END,
};
/* core implementaton */
struct uniphier_reset_priv {
void __iomem *base;
const struct uniphier_reset_data *data;
};
static int uniphier_reset_request(struct reset_ctl *reset_ctl)
{
return 0;
}
static int uniphier_reset_free(struct reset_ctl *reset_ctl)
{
return 0;
}
static int uniphier_reset_update(struct reset_ctl *reset_ctl, int assert)
{
struct uniphier_reset_priv *priv = dev_get_priv(reset_ctl->dev);
unsigned long id = reset_ctl->id;
const struct uniphier_reset_data *p;
for (p = priv->data; p->id != UNIPHIER_RESET_ID_END; p++) {
u32 mask, val;
if (p->id != id)
continue;
val = readl(priv->base + p->reg);
if (p->flags & UNIPHIER_RESET_ACTIVE_LOW)
assert = !assert;
mask = BIT(p->bit);
if (assert)
val |= mask;
else
val &= ~mask;
writel(val, priv->base + p->reg);
return 0;
}
dev_err(reset_ctl->dev, "reset_id=%lu was not handled\n", id);
return -EINVAL;
}
static int uniphier_reset_assert(struct reset_ctl *reset_ctl)
{
return uniphier_reset_update(reset_ctl, 1);
}
static int uniphier_reset_deassert(struct reset_ctl *reset_ctl)
{
return uniphier_reset_update(reset_ctl, 0);
}
static const struct reset_ops uniphier_reset_ops = {
.request = uniphier_reset_request,
.free = uniphier_reset_free,
.rst_assert = uniphier_reset_assert,
.rst_deassert = uniphier_reset_deassert,
};
static int uniphier_reset_probe(struct udevice *dev)
{
struct uniphier_reset_priv *priv = dev_get_priv(dev);
fdt_addr_t addr;
addr = devfdt_get_addr(dev->parent);
if (addr == FDT_ADDR_T_NONE)
return -EINVAL;
priv->base = devm_ioremap(dev, addr, SZ_4K);
if (!priv->base)
return -ENOMEM;
priv->data = (void *)dev_get_driver_data(dev);
return 0;
}
static const struct udevice_id uniphier_reset_match[] = {
/* System reset */
{
.compatible = "socionext,uniphier-ld4-reset",
.data = (ulong)uniphier_pro4_sys_reset_data,
},
{
.compatible = "socionext,uniphier-pro4-reset",
.data = (ulong)uniphier_pro4_sys_reset_data,
},
{
.compatible = "socionext,uniphier-sld8-reset",
.data = (ulong)uniphier_pro4_sys_reset_data,
},
{
.compatible = "socionext,uniphier-pro5-reset",
.data = (ulong)uniphier_pro4_sys_reset_data,
},
{
.compatible = "socionext,uniphier-pxs2-reset",
.data = (ulong)uniphier_pxs2_sys_reset_data,
},
{
.compatible = "socionext,uniphier-ld11-reset",
.data = (ulong)uniphier_ld20_sys_reset_data,
},
{
.compatible = "socionext,uniphier-ld20-reset",
.data = (ulong)uniphier_ld20_sys_reset_data,
},
{
.compatible = "socionext,uniphier-pxs3-reset",
.data = (ulong)uniphier_pxs3_sys_reset_data,
},
/* Media I/O reset */
{
.compatible = "socionext,uniphier-ld4-mio-reset",
.data = (ulong)uniphier_mio_reset_data,
},
{
.compatible = "socionext,uniphier-pro4-mio-reset",
.data = (ulong)uniphier_mio_reset_data,
},
{
.compatible = "socionext,uniphier-sld8-mio-reset",
.data = (ulong)uniphier_mio_reset_data,
},
{
.compatible = "socionext,uniphier-pro5-mio-reset",
.data = (ulong)uniphier_mio_reset_data,
},
{
.compatible = "socionext,uniphier-pxs2-mio-reset",
.data = (ulong)uniphier_mio_reset_data,
},
{
.compatible = "socionext,uniphier-ld11-mio-reset",
.data = (ulong)uniphier_mio_reset_data,
},
{
.compatible = "socionext,uniphier-ld11-sd-reset",
.data = (ulong)uniphier_mio_reset_data,
},
{
.compatible = "socionext,uniphier-ld20-sd-reset",
.data = (ulong)uniphier_mio_reset_data,
},
{
.compatible = "socionext,uniphier-pxs3-sd-reset",
.data = (ulong)uniphier_mio_reset_data,
},
/* Peripheral reset */
{
.compatible = "socionext,uniphier-ld4-peri-reset",
.data = (ulong)uniphier_ld4_peri_reset_data,
},
{
.compatible = "socionext,uniphier-pro4-peri-reset",
.data = (ulong)uniphier_pro4_peri_reset_data,
},
{
.compatible = "socionext,uniphier-sld8-peri-reset",
.data = (ulong)uniphier_ld4_peri_reset_data,
},
{
.compatible = "socionext,uniphier-pro5-peri-reset",
.data = (ulong)uniphier_pro4_peri_reset_data,
},
{
.compatible = "socionext,uniphier-pxs2-peri-reset",
.data = (ulong)uniphier_pro4_peri_reset_data,
},
{
.compatible = "socionext,uniphier-ld11-peri-reset",
.data = (ulong)uniphier_pro4_peri_reset_data,
},
{
.compatible = "socionext,uniphier-ld20-peri-reset",
.data = (ulong)uniphier_pro4_peri_reset_data,
},
{
.compatible = "socionext,uniphier-pxs3-peri-reset",
.data = (ulong)uniphier_pro4_peri_reset_data,
},
{ /* sentinel */ }
};
U_BOOT_DRIVER(uniphier_reset) = {
.name = "uniphier-reset",
.id = UCLASS_RESET,
.of_match = uniphier_reset_match,
.probe = uniphier_reset_probe,
.priv_auto_alloc_size = sizeof(struct uniphier_reset_priv),
.ops = &uniphier_reset_ops,
};
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