u-boot/drivers/reset/reset-uniphier.c
Simon Glass 41575d8e4c dm: treewide: Rename auto_alloc_size members to be shorter
This construct is quite long-winded. In earlier days it made some sense
since auto-allocation was a strange concept. But with driver model now
used pretty universally, we can shorten this to 'auto'. This reduces
verbosity and makes it easier to read.

Coincidentally it also ensures that every declaration is on one line,
thus making dtoc's job easier.

Signed-off-by: Simon Glass <sjg@chromium.org>
2020-12-13 08:00:25 -07:00

377 lines
10 KiB
C

// 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 <log.h>
#include <malloc.h>
#include <reset-uclass.h>
#include <dm/device_compat.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(14, 0x200c, 5), /* USB30 */
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, 4), /* USB30 link */
UNIPHIER_RESETX(13, 0x200c, 5), /* USB31 link */
UNIPHIER_RESETX(16, 0x200c, 16), /* USB30-PHY0 */
UNIPHIER_RESETX(17, 0x200c, 18), /* USB30-PHY1 */
UNIPHIER_RESETX(18, 0x200c, 20), /* USB30-PHY2 */
UNIPHIER_RESETX(20, 0x200c, 17), /* USB31-PHY0 */
UNIPHIER_RESETX(21, 0x200c, 19), /* USB31-PHY1 */
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,
.rfree = 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 = dev_read_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 = sizeof(struct uniphier_reset_priv),
.ops = &uniphier_reset_ops,
};