Commit 8193d9ae authored by Arnd Bergmann's avatar Arnd Bergmann

Merge tag 'reset-for-4.15' of git://git.pengutronix.de/git/pza/linux into next/drivers

Pull "Reset controller changes for v4.15" from Philipp Zabel:

- add ARC AX10x support,
  merged from a separate branch that is also included in the ARC tree
- add Stratix10 support via socfpga
- unify socfpga, stm32, sunxi, and zx2967 into simple-reset driver
- add Meson GX reset level control and remove an unneeded check
- add Uniphier PXs3 and ethernet reset controls
- add MT7622 reset control dt-bindings header

* tag 'reset-for-4.15' of git://git.pengutronix.de/git/pza/linux:
  reset: zx2967: use the reset-simple driver
  reset: stm32: use the reset-simple driver
  reset: socfpga: use the reset-simple driver
  reset: sunxi: use reset-simple driver
  reset: add reset-simple to unify socfpga, stm32, sunxi, and zx2967
  reset: meson: remove unneeded check in meson_reset_reset
  reset: meson: add level reset support for GX SoC family
  reset: uniphier: add PXs3 reset data
  reset: mediatek: add reset controller dt-bindings required header for MT7622 SoC
  reset: socfpga: build the reset-socfpga for Stratix10 SOC
  reset: uniphier: add ethernet reset control support
  reset: socfpga: fix for 64-bit compilation
  ARC: reset: introduce AXS10x reset driver
parents d5bd8507 542befbb
Binding for the AXS10x reset controller
This binding describes the ARC AXS10x boards custom IP-block which allows
to control reset signals of selected peripherals. For example DW GMAC, etc...
This block is controlled via memory-mapped register (AKA CREG) which
represents up-to 32 reset lines.
As of today only the following lines are used:
- DW GMAC - line 5
This binding uses the common reset binding[1].
[1] Documentation/devicetree/bindings/reset/reset.txt
Required properties:
- compatible: should be "snps,axs10x-reset".
- reg: should always contain pair address - length: for creg reset
bits register.
- #reset-cells: from common reset binding; Should always be set to 1.
Example:
reset: reset-controller@11220 {
compatible = "snps,axs10x-reset";
#reset-cells = <1>;
reg = <0x11220 0x4>;
};
Specifying reset lines connected to IP modules:
ethernet@.... {
....
resets = <&reset 5>;
....
};
...@@ -13,6 +13,7 @@ Required properties: ...@@ -13,6 +13,7 @@ Required properties:
"socionext,uniphier-pxs2-reset" - for PXs2/LD6b SoC "socionext,uniphier-pxs2-reset" - for PXs2/LD6b SoC
"socionext,uniphier-ld11-reset" - for LD11 SoC "socionext,uniphier-ld11-reset" - for LD11 SoC
"socionext,uniphier-ld20-reset" - for LD20 SoC "socionext,uniphier-ld20-reset" - for LD20 SoC
"socionext,uniphier-pxs3-reset" - for PXs3 SoC
- #reset-cells: should be 1. - #reset-cells: should be 1.
Example: Example:
...@@ -44,6 +45,7 @@ Required properties: ...@@ -44,6 +45,7 @@ Required properties:
"socionext,uniphier-ld11-mio-reset" - for LD11 SoC (MIO) "socionext,uniphier-ld11-mio-reset" - for LD11 SoC (MIO)
"socionext,uniphier-ld11-sd-reset" - for LD11 SoC (SD) "socionext,uniphier-ld11-sd-reset" - for LD11 SoC (SD)
"socionext,uniphier-ld20-sd-reset" - for LD20 SoC "socionext,uniphier-ld20-sd-reset" - for LD20 SoC
"socionext,uniphier-pxs3-sd-reset" - for PXs3 SoC
- #reset-cells: should be 1. - #reset-cells: should be 1.
Example: Example:
...@@ -74,6 +76,7 @@ Required properties: ...@@ -74,6 +76,7 @@ Required properties:
"socionext,uniphier-pxs2-peri-reset" - for PXs2/LD6b SoC "socionext,uniphier-pxs2-peri-reset" - for PXs2/LD6b SoC
"socionext,uniphier-ld11-peri-reset" - for LD11 SoC "socionext,uniphier-ld11-peri-reset" - for LD11 SoC
"socionext,uniphier-ld20-peri-reset" - for LD20 SoC "socionext,uniphier-ld20-peri-reset" - for LD20 SoC
"socionext,uniphier-pxs3-peri-reset" - for PXs3 SoC
- #reset-cells: should be 1. - #reset-cells: should be 1.
Example: Example:
......
...@@ -2136,7 +2136,6 @@ F: drivers/gpio/gpio-zx.c ...@@ -2136,7 +2136,6 @@ F: drivers/gpio/gpio-zx.c
F: drivers/i2c/busses/i2c-zx2967.c F: drivers/i2c/busses/i2c-zx2967.c
F: drivers/mmc/host/dw_mmc-zx.* F: drivers/mmc/host/dw_mmc-zx.*
F: drivers/pinctrl/zte/ F: drivers/pinctrl/zte/
F: drivers/reset/reset-zx2967.c
F: drivers/soc/zte/ F: drivers/soc/zte/
F: drivers/thermal/zx2967_thermal.c F: drivers/thermal/zx2967_thermal.c
F: drivers/watchdog/zx2967_wdt.c F: drivers/watchdog/zx2967_wdt.c
...@@ -12914,6 +12913,12 @@ F: arch/arc/plat-axs10x ...@@ -12914,6 +12913,12 @@ F: arch/arc/plat-axs10x
F: arch/arc/boot/dts/ax* F: arch/arc/boot/dts/ax*
F: Documentation/devicetree/bindings/arc/axs10* F: Documentation/devicetree/bindings/arc/axs10*
SYNOPSYS AXS10x RESET CONTROLLER DRIVER
M: Eugeniy Paltsev <Eugeniy.Paltsev@synopsys.com>
S: Supported
F: drivers/reset/reset-axs10x.c
F: Documentation/devicetree/bindings/reset/snps,axs10x-reset.txt
SYNOPSYS DESIGNWARE DMAC DRIVER SYNOPSYS DESIGNWARE DMAC DRIVER
M: Viresh Kumar <vireshk@kernel.org> M: Viresh Kumar <vireshk@kernel.org>
M: Andy Shevchenko <andriy.shevchenko@linux.intel.com> M: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
......
...@@ -28,6 +28,12 @@ config RESET_ATH79 ...@@ -28,6 +28,12 @@ config RESET_ATH79
This enables the ATH79 reset controller driver that supports the This enables the ATH79 reset controller driver that supports the
AR71xx SoC reset controller. AR71xx SoC reset controller.
config RESET_AXS10X
bool "AXS10x Reset Driver" if COMPILE_TEST
default ARC_PLAT_AXS10X
help
This enables the reset controller driver for AXS10x.
config RESET_BERLIN config RESET_BERLIN
bool "Berlin Reset Driver" if COMPILE_TEST bool "Berlin Reset Driver" if COMPILE_TEST
default ARCH_BERLIN default ARCH_BERLIN
...@@ -75,21 +81,21 @@ config RESET_PISTACHIO ...@@ -75,21 +81,21 @@ config RESET_PISTACHIO
help help
This enables the reset driver for ImgTec Pistachio SoCs. This enables the reset driver for ImgTec Pistachio SoCs.
config RESET_SOCFPGA config RESET_SIMPLE
bool "SoCFPGA Reset Driver" if COMPILE_TEST bool "Simple Reset Controller Driver" if COMPILE_TEST
default ARCH_SOCFPGA default ARCH_SOCFPGA || ARCH_STM32 || ARCH_STRATIX10 || ARCH_SUNXI || ARCH_ZX
help help
This enables the reset controller driver for Altera SoCFPGAs. This enables a simple reset controller driver for reset lines that
that can be asserted and deasserted by toggling bits in a contiguous,
exclusive register space.
config RESET_STM32 Currently this driver supports Altera SoCFPGAs, the RCC reset
bool "STM32 Reset Driver" if COMPILE_TEST controller in STM32 MCUs, Allwinner SoCs, and ZTE's zx2967 family.
default ARCH_STM32
help
This enables the RCC reset controller driver for STM32 MCUs.
config RESET_SUNXI config RESET_SUNXI
bool "Allwinner SoCs Reset Driver" if COMPILE_TEST && !ARCH_SUNXI bool "Allwinner SoCs Reset Driver" if COMPILE_TEST && !ARCH_SUNXI
default ARCH_SUNXI default ARCH_SUNXI
select RESET_SIMPLE
help help
This enables the reset driver for Allwinner SoCs. This enables the reset driver for Allwinner SoCs.
...@@ -121,12 +127,6 @@ config RESET_UNIPHIER ...@@ -121,12 +127,6 @@ config RESET_UNIPHIER
Say Y if you want to control reset signals provided by System Control Say Y if you want to control reset signals provided by System Control
block, Media I/O block, Peripheral Block. block, Media I/O block, Peripheral Block.
config RESET_ZX2967
bool "ZTE ZX2967 Reset Driver"
depends on ARCH_ZX || COMPILE_TEST
help
This enables the reset controller driver for ZTE's zx2967 family.
config RESET_ZYNQ config RESET_ZYNQ
bool "ZYNQ Reset Driver" if COMPILE_TEST bool "ZYNQ Reset Driver" if COMPILE_TEST
default ARCH_ZYNQ default ARCH_ZYNQ
......
...@@ -4,6 +4,7 @@ obj-$(CONFIG_ARCH_STI) += sti/ ...@@ -4,6 +4,7 @@ obj-$(CONFIG_ARCH_STI) += sti/
obj-$(CONFIG_ARCH_TEGRA) += tegra/ obj-$(CONFIG_ARCH_TEGRA) += tegra/
obj-$(CONFIG_RESET_A10SR) += reset-a10sr.o obj-$(CONFIG_RESET_A10SR) += reset-a10sr.o
obj-$(CONFIG_RESET_ATH79) += reset-ath79.o obj-$(CONFIG_RESET_ATH79) += reset-ath79.o
obj-$(CONFIG_RESET_AXS10X) += reset-axs10x.o
obj-$(CONFIG_RESET_BERLIN) += reset-berlin.o obj-$(CONFIG_RESET_BERLIN) += reset-berlin.o
obj-$(CONFIG_RESET_HSDK) += reset-hsdk.o obj-$(CONFIG_RESET_HSDK) += reset-hsdk.o
obj-$(CONFIG_RESET_IMX7) += reset-imx7.o obj-$(CONFIG_RESET_IMX7) += reset-imx7.o
...@@ -12,12 +13,10 @@ obj-$(CONFIG_RESET_LPC18XX) += reset-lpc18xx.o ...@@ -12,12 +13,10 @@ obj-$(CONFIG_RESET_LPC18XX) += reset-lpc18xx.o
obj-$(CONFIG_RESET_MESON) += reset-meson.o obj-$(CONFIG_RESET_MESON) += reset-meson.o
obj-$(CONFIG_RESET_OXNAS) += reset-oxnas.o obj-$(CONFIG_RESET_OXNAS) += reset-oxnas.o
obj-$(CONFIG_RESET_PISTACHIO) += reset-pistachio.o obj-$(CONFIG_RESET_PISTACHIO) += reset-pistachio.o
obj-$(CONFIG_RESET_SOCFPGA) += reset-socfpga.o obj-$(CONFIG_RESET_SIMPLE) += reset-simple.o
obj-$(CONFIG_RESET_STM32) += reset-stm32.o
obj-$(CONFIG_RESET_SUNXI) += reset-sunxi.o obj-$(CONFIG_RESET_SUNXI) += reset-sunxi.o
obj-$(CONFIG_RESET_TI_SCI) += reset-ti-sci.o obj-$(CONFIG_RESET_TI_SCI) += reset-ti-sci.o
obj-$(CONFIG_RESET_TI_SYSCON) += reset-ti-syscon.o obj-$(CONFIG_RESET_TI_SYSCON) += reset-ti-syscon.o
obj-$(CONFIG_RESET_UNIPHIER) += reset-uniphier.o obj-$(CONFIG_RESET_UNIPHIER) += reset-uniphier.o
obj-$(CONFIG_RESET_ZX2967) += reset-zx2967.o
obj-$(CONFIG_RESET_ZYNQ) += reset-zynq.o obj-$(CONFIG_RESET_ZYNQ) += reset-zynq.o
/*
* Copyright (C) 2017 Synopsys.
*
* Synopsys AXS10x reset driver.
*
* This file is licensed under the terms of the GNU General Public
* License version 2. This program is licensed "as is" without any
* warranty of any kind, whether express or implied.
*/
#include <linux/io.h>
#include <linux/module.h>
#include <linux/platform_device.h>
#include <linux/reset-controller.h>
#define to_axs10x_rst(p) container_of((p), struct axs10x_rst, rcdev)
#define AXS10X_MAX_RESETS 32
struct axs10x_rst {
void __iomem *regs_rst;
spinlock_t lock;
struct reset_controller_dev rcdev;
};
static int axs10x_reset_reset(struct reset_controller_dev *rcdev,
unsigned long id)
{
struct axs10x_rst *rst = to_axs10x_rst(rcdev);
unsigned long flags;
spin_lock_irqsave(&rst->lock, flags);
writel(BIT(id), rst->regs_rst);
spin_unlock_irqrestore(&rst->lock, flags);
return 0;
}
static const struct reset_control_ops axs10x_reset_ops = {
.reset = axs10x_reset_reset,
};
static int axs10x_reset_probe(struct platform_device *pdev)
{
struct axs10x_rst *rst;
struct resource *mem;
rst = devm_kzalloc(&pdev->dev, sizeof(*rst), GFP_KERNEL);
if (!rst)
return -ENOMEM;
mem = platform_get_resource(pdev, IORESOURCE_MEM, 0);
rst->regs_rst = devm_ioremap_resource(&pdev->dev, mem);
if (IS_ERR(rst->regs_rst))
return PTR_ERR(rst->regs_rst);
spin_lock_init(&rst->lock);
rst->rcdev.owner = THIS_MODULE;
rst->rcdev.ops = &axs10x_reset_ops;
rst->rcdev.of_node = pdev->dev.of_node;
rst->rcdev.nr_resets = AXS10X_MAX_RESETS;
return devm_reset_controller_register(&pdev->dev, &rst->rcdev);
}
static const struct of_device_id axs10x_reset_dt_match[] = {
{ .compatible = "snps,axs10x-reset" },
{ },
};
static struct platform_driver axs10x_reset_driver = {
.probe = axs10x_reset_probe,
.driver = {
.name = "axs10x-reset",
.of_match_table = axs10x_reset_dt_match,
},
};
builtin_platform_driver(axs10x_reset_driver);
MODULE_AUTHOR("Eugeniy Paltsev <Eugeniy.Paltsev@synopsys.com>");
MODULE_DESCRIPTION("Synopsys AXS10x reset driver");
MODULE_LICENSE("GPL v2");
...@@ -62,13 +62,16 @@ ...@@ -62,13 +62,16 @@
#include <linux/reset-controller.h> #include <linux/reset-controller.h>
#include <linux/slab.h> #include <linux/slab.h>
#include <linux/types.h> #include <linux/types.h>
#include <linux/of_device.h>
#define REG_COUNT 8 #define REG_COUNT 8
#define BITS_PER_REG 32 #define BITS_PER_REG 32
#define LEVEL_OFFSET 0x7c
struct meson_reset { struct meson_reset {
void __iomem *reg_base; void __iomem *reg_base;
struct reset_controller_dev rcdev; struct reset_controller_dev rcdev;
spinlock_t lock;
}; };
static int meson_reset_reset(struct reset_controller_dev *rcdev, static int meson_reset_reset(struct reset_controller_dev *rcdev,
...@@ -80,26 +83,68 @@ static int meson_reset_reset(struct reset_controller_dev *rcdev, ...@@ -80,26 +83,68 @@ static int meson_reset_reset(struct reset_controller_dev *rcdev,
unsigned int offset = id % BITS_PER_REG; unsigned int offset = id % BITS_PER_REG;
void __iomem *reg_addr = data->reg_base + (bank << 2); void __iomem *reg_addr = data->reg_base + (bank << 2);
if (bank >= REG_COUNT)
return -EINVAL;
writel(BIT(offset), reg_addr); writel(BIT(offset), reg_addr);
return 0; return 0;
} }
static const struct reset_control_ops meson_reset_ops = { static int meson_reset_level(struct reset_controller_dev *rcdev,
unsigned long id, bool assert)
{
struct meson_reset *data =
container_of(rcdev, struct meson_reset, rcdev);
unsigned int bank = id / BITS_PER_REG;
unsigned int offset = id % BITS_PER_REG;
void __iomem *reg_addr = data->reg_base + LEVEL_OFFSET + (bank << 2);
unsigned long flags;
u32 reg;
spin_lock_irqsave(&data->lock, flags);
reg = readl(reg_addr);
if (assert)
writel(reg & ~BIT(offset), reg_addr);
else
writel(reg | BIT(offset), reg_addr);
spin_unlock_irqrestore(&data->lock, flags);
return 0;
}
static int meson_reset_assert(struct reset_controller_dev *rcdev,
unsigned long id)
{
return meson_reset_level(rcdev, id, true);
}
static int meson_reset_deassert(struct reset_controller_dev *rcdev,
unsigned long id)
{
return meson_reset_level(rcdev, id, false);
}
static const struct reset_control_ops meson_reset_meson8_ops = {
.reset = meson_reset_reset, .reset = meson_reset_reset,
}; };
static const struct reset_control_ops meson_reset_gx_ops = {
.reset = meson_reset_reset,
.assert = meson_reset_assert,
.deassert = meson_reset_deassert,
};
static const struct of_device_id meson_reset_dt_ids[] = { static const struct of_device_id meson_reset_dt_ids[] = {
{ .compatible = "amlogic,meson8b-reset", }, { .compatible = "amlogic,meson8b-reset",
{ .compatible = "amlogic,meson-gxbb-reset", }, .data = &meson_reset_meson8_ops, },
{ .compatible = "amlogic,meson-gxbb-reset",
.data = &meson_reset_gx_ops, },
{ /* sentinel */ }, { /* sentinel */ },
}; };
static int meson_reset_probe(struct platform_device *pdev) static int meson_reset_probe(struct platform_device *pdev)
{ {
const struct reset_control_ops *ops;
struct meson_reset *data; struct meson_reset *data;
struct resource *res; struct resource *res;
...@@ -107,6 +152,10 @@ static int meson_reset_probe(struct platform_device *pdev) ...@@ -107,6 +152,10 @@ static int meson_reset_probe(struct platform_device *pdev)
if (!data) if (!data)
return -ENOMEM; return -ENOMEM;
ops = of_device_get_match_data(&pdev->dev);
if (!ops)
return -EINVAL;
res = platform_get_resource(pdev, IORESOURCE_MEM, 0); res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
data->reg_base = devm_ioremap_resource(&pdev->dev, res); data->reg_base = devm_ioremap_resource(&pdev->dev, res);
if (IS_ERR(data->reg_base)) if (IS_ERR(data->reg_base))
...@@ -114,9 +163,11 @@ static int meson_reset_probe(struct platform_device *pdev) ...@@ -114,9 +163,11 @@ static int meson_reset_probe(struct platform_device *pdev)
platform_set_drvdata(pdev, data); platform_set_drvdata(pdev, data);
spin_lock_init(&data->lock);
data->rcdev.owner = THIS_MODULE; data->rcdev.owner = THIS_MODULE;
data->rcdev.nr_resets = REG_COUNT * BITS_PER_REG; data->rcdev.nr_resets = REG_COUNT * BITS_PER_REG;
data->rcdev.ops = &meson_reset_ops; data->rcdev.ops = ops;
data->rcdev.of_node = pdev->dev.of_node; data->rcdev.of_node = pdev->dev.of_node;
return devm_reset_controller_register(&pdev->dev, &data->rcdev); return devm_reset_controller_register(&pdev->dev, &data->rcdev);
......
/*
* Simple Reset Controller Driver
*
* Copyright (C) 2017 Pengutronix, Philipp Zabel <kernel@pengutronix.de>
*
* Based on Allwinner SoCs Reset Controller driver
*
* Copyright 2013 Maxime Ripard
*
* Maxime Ripard <maxime.ripard@free-electrons.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*/
#include <linux/device.h>
#include <linux/err.h>
#include <linux/io.h>
#include <linux/of.h>
#include <linux/of_device.h>
#include <linux/platform_device.h>
#include <linux/reset-controller.h>
#include <linux/spinlock.h>
#include "reset-simple.h"
static inline struct reset_simple_data *
to_reset_simple_data(struct reset_controller_dev *rcdev)
{
return container_of(rcdev, struct reset_simple_data, rcdev);
}
static int reset_simple_update(struct reset_controller_dev *rcdev,
unsigned long id, bool assert)
{
struct reset_simple_data *data = to_reset_simple_data(rcdev);
int reg_width = sizeof(u32);
int bank = id / (reg_width * BITS_PER_BYTE);
int offset = id % (reg_width * BITS_PER_BYTE);
unsigned long flags;
u32 reg;
spin_lock_irqsave(&data->lock, flags);
reg = readl(data->membase + (bank * reg_width));
if (assert ^ data->active_low)
reg |= BIT(offset);
else
reg &= ~BIT(offset);
writel(reg, data->membase + (bank * reg_width));
spin_unlock_irqrestore(&data->lock, flags);
return 0;
}
static int reset_simple_assert(struct reset_controller_dev *rcdev,
unsigned long id)
{
return reset_simple_update(rcdev, id, true);
}
static int reset_simple_deassert(struct reset_controller_dev *rcdev,
unsigned long id)
{
return reset_simple_update(rcdev, id, false);
}
static int reset_simple_status(struct reset_controller_dev *rcdev,
unsigned long id)
{
struct reset_simple_data *data = to_reset_simple_data(rcdev);
int reg_width = sizeof(u32);
int bank = id / (reg_width * BITS_PER_BYTE);
int offset = id % (reg_width * BITS_PER_BYTE);
u32 reg;
reg = readl(data->membase + (bank * reg_width));
return !(reg & BIT(offset)) ^ !data->status_active_low;
}
const struct reset_control_ops reset_simple_ops = {
.assert = reset_simple_assert,
.deassert = reset_simple_deassert,
.status = reset_simple_status,
};
/**
* struct reset_simple_devdata - simple reset controller properties
* @reg_offset: offset between base address and first reset register.
* @nr_resets: number of resets. If not set, default to resource size in bits.
* @active_low: if true, bits are cleared to assert the reset. Otherwise, bits
* are set to assert the reset.
* @status_active_low: if true, bits read back as cleared while the reset is
* asserted. Otherwise, bits read back as set while the
* reset is asserted.
*/
struct reset_simple_devdata {
u32 reg_offset;
u32 nr_resets;
bool active_low;
bool status_active_low;
};
#define SOCFPGA_NR_BANKS 8
static const struct reset_simple_devdata reset_simple_socfpga = {
.reg_offset = 0x10,
.nr_resets = SOCFPGA_NR_BANKS * 32,
.status_active_low = true,
};
static const struct reset_simple_devdata reset_simple_active_low = {
.active_low = true,
.status_active_low = true,
};
static const struct of_device_id reset_simple_dt_ids[] = {
{ .compatible = "altr,rst-mgr", .data = &reset_simple_socfpga },
{ .compatible = "st,stm32-rcc", },
{ .compatible = "allwinner,sun6i-a31-clock-reset",
.data = &reset_simple_active_low },
{ .compatible = "zte,zx296718-reset",
.data = &reset_simple_active_low },
{ /* sentinel */ },
};
static int reset_simple_probe(struct platform_device *pdev)
{
struct device *dev = &pdev->dev;
const struct reset_simple_devdata *devdata;
struct reset_simple_data *data;
void __iomem *membase;
struct resource *res;
u32 reg_offset = 0;
devdata = of_device_get_match_data(dev);
data = devm_kzalloc(dev, sizeof(*data), GFP_KERNEL);
if (!data)
return -ENOMEM;
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
membase = devm_ioremap_resource(dev, res);
if (IS_ERR(membase))
return PTR_ERR(membase);
spin_lock_init(&data->lock);
data->membase = membase;
data->rcdev.owner = THIS_MODULE;
data->rcdev.nr_resets = resource_size(res) * BITS_PER_BYTE;
data->rcdev.ops = &reset_simple_ops;
data->rcdev.of_node = dev->of_node;
if (devdata) {
reg_offset = devdata->reg_offset;
if (devdata->nr_resets)
data->rcdev.nr_resets = devdata->nr_resets;
data->active_low = devdata->active_low;
data->status_active_low = devdata->status_active_low;
}
if (of_device_is_compatible(dev->of_node, "altr,rst-mgr") &&
of_property_read_u32(dev->of_node, "altr,modrst-offset",
&reg_offset)) {
dev_warn(dev,
"missing altr,modrst-offset property, assuming 0x%x!\n",
reg_offset);
}
data->membase += reg_offset;
return devm_reset_controller_register(dev, &data->rcdev);
}
static struct platform_driver reset_simple_driver = {
.probe = reset_simple_probe,
.driver = {
.name = "simple-reset",
.of_match_table = reset_simple_dt_ids,
},
};
builtin_platform_driver(reset_simple_driver);
/*
* Simple Reset Controller ops
*
* Based on Allwinner SoCs Reset Controller driver
*
* Copyright 2013 Maxime Ripard
*
* Maxime Ripard <maxime.ripard@free-electrons.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*/
#ifndef __RESET_SIMPLE_H__
#define __RESET_SIMPLE_H__
#include <linux/io.h>
#include <linux/reset-controller.h>
#include <linux/spinlock.h>
/**
* struct reset_simple_data - driver data for simple reset controllers
* @lock: spinlock to protect registers during read-modify-write cycles
* @membase: memory mapped I/O register range
* @rcdev: reset controller device base structure
* @active_low: if true, bits are cleared to assert the reset. Otherwise, bits
* are set to assert the reset. Note that this says nothing about
* the voltage level of the actual reset line.
* @status_active_low: if true, bits read back as cleared while the reset is
* asserted. Otherwise, bits read back as set while the
* reset is asserted.
*/
struct reset_simple_data {
spinlock_t lock;
void __iomem *membase;
struct reset_controller_dev rcdev;
bool active_low;
bool status_active_low;
};
extern const struct reset_control_ops reset_simple_ops;
#endif /* __RESET_SIMPLE_H__ */
/*
* Socfpga Reset Controller Driver
*
* Copyright 2014 Steffen Trumtrar <s.trumtrar@pengutronix.de>
*
* based on
* Allwinner SoCs Reset Controller driver
*
* Copyright 2013 Maxime Ripard
*
* Maxime Ripard <maxime.ripard@free-electrons.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*/
#include <linux/err.h>
#include <linux/io.h>
#include <linux/init.h>
#include <linux/of.h>
#include <linux/platform_device.h>
#include <linux/reset-controller.h>
#include <linux/spinlock.h>
#include <linux/types.h>
#define BANK_INCREMENT 4
#define NR_BANKS 8
struct socfpga_reset_data {
spinlock_t lock;
void __iomem *membase;
struct reset_controller_dev rcdev;
};
static int socfpga_reset_assert(struct reset_controller_dev *rcdev,
unsigned long id)
{
struct socfpga_reset_data *data = container_of(rcdev,
struct socfpga_reset_data,
rcdev);
int bank = id / BITS_PER_LONG;
int offset = id % BITS_PER_LONG;
unsigned long flags;
u32 reg;
spin_lock_irqsave(&data->lock, flags);
reg = readl(data->membase + (bank * BANK_INCREMENT));
writel(reg | BIT(offset), data->membase + (bank * BANK_INCREMENT));
spin_unlock_irqrestore(&data->lock, flags);
return 0;
}
static int socfpga_reset_deassert(struct reset_controller_dev *rcdev,
unsigned long id)
{
struct socfpga_reset_data *data = container_of(rcdev,
struct socfpga_reset_data,
rcdev);
int bank = id / BITS_PER_LONG;
int offset = id % BITS_PER_LONG;
unsigned long flags;
u32 reg;
spin_lock_irqsave(&data->lock, flags);
reg = readl(data->membase + (bank * BANK_INCREMENT));
writel(reg & ~BIT(offset), data->membase + (bank * BANK_INCREMENT));
spin_unlock_irqrestore(&data->lock, flags);
return 0;
}
static int socfpga_reset_status(struct reset_controller_dev *rcdev,
unsigned long id)
{
struct socfpga_reset_data *data = container_of(rcdev,
struct socfpga_reset_data, rcdev);
int bank = id / BITS_PER_LONG;
int offset = id % BITS_PER_LONG;
u32 reg;
reg = readl(data->membase + (bank * BANK_INCREMENT));
return !(reg & BIT(offset));
}
static const struct reset_control_ops socfpga_reset_ops = {
.assert = socfpga_reset_assert,
.deassert = socfpga_reset_deassert,
.status = socfpga_reset_status,
};
static int socfpga_reset_probe(struct platform_device *pdev)
{
struct socfpga_reset_data *data;
struct resource *res;
struct device *dev = &pdev->dev;
struct device_node *np = dev->of_node;
u32 modrst_offset;
/*
* The binding was mainlined without the required property.
* Do not continue, when we encounter an old DT.
*/
if (!of_find_property(pdev->dev.of_node, "#reset-cells", NULL)) {
dev_err(&pdev->dev, "%pOF missing #reset-cells property\n",
pdev->dev.of_node);
return -EINVAL;
}
data = devm_kzalloc(&pdev->dev, sizeof(*data), GFP_KERNEL);
if (!data)
return -ENOMEM;
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
data->membase = devm_ioremap_resource(&pdev->dev, res);
if (IS_ERR(data->membase))
return PTR_ERR(data->membase);
if (of_property_read_u32(np, "altr,modrst-offset", &modrst_offset)) {
dev_warn(dev, "missing altr,modrst-offset property, assuming 0x10!\n");
modrst_offset = 0x10;
}
data->membase += modrst_offset;
spin_lock_init(&data->lock);
data->rcdev.owner = THIS_MODULE;
data->rcdev.nr_resets = NR_BANKS * BITS_PER_LONG;
data->rcdev.ops = &socfpga_reset_ops;
data->rcdev.of_node = pdev->dev.of_node;
return devm_reset_controller_register(dev, &data->rcdev);
}
static const struct of_device_id socfpga_reset_dt_ids[] = {
{ .compatible = "altr,rst-mgr", },
{ /* sentinel */ },
};
static struct platform_driver socfpga_reset_driver = {
.probe = socfpga_reset_probe,
.driver = {
.name = "socfpga-reset",
.of_match_table = socfpga_reset_dt_ids,
},
};
builtin_platform_driver(socfpga_reset_driver);
/*
* Copyright (C) Maxime Coquelin 2015
* Author: Maxime Coquelin <mcoquelin.stm32@gmail.com>
* License terms: GNU General Public License (GPL), version 2
*
* Heavily based on sunxi driver from Maxime Ripard.
*/
#include <linux/err.h>
#include <linux/io.h>
#include <linux/of.h>
#include <linux/of_address.h>
#include <linux/platform_device.h>
#include <linux/reset-controller.h>
#include <linux/slab.h>
#include <linux/spinlock.h>
#include <linux/types.h>
struct stm32_reset_data {
spinlock_t lock;
void __iomem *membase;
struct reset_controller_dev rcdev;
};
static int stm32_reset_assert(struct reset_controller_dev *rcdev,
unsigned long id)
{
struct stm32_reset_data *data = container_of(rcdev,
struct stm32_reset_data,
rcdev);
int bank = id / BITS_PER_LONG;
int offset = id % BITS_PER_LONG;
unsigned long flags;
u32 reg;
spin_lock_irqsave(&data->lock, flags);
reg = readl(data->membase + (bank * 4));
writel(reg | BIT(offset), data->membase + (bank * 4));
spin_unlock_irqrestore(&data->lock, flags);
return 0;
}
static int stm32_reset_deassert(struct reset_controller_dev *rcdev,
unsigned long id)
{
struct stm32_reset_data *data = container_of(rcdev,
struct stm32_reset_data,
rcdev);
int bank = id / BITS_PER_LONG;
int offset = id % BITS_PER_LONG;
unsigned long flags;
u32 reg;
spin_lock_irqsave(&data->lock, flags);
reg = readl(data->membase + (bank * 4));
writel(reg & ~BIT(offset), data->membase + (bank * 4));
spin_unlock_irqrestore(&data->lock, flags);
return 0;
}
static const struct reset_control_ops stm32_reset_ops = {
.assert = stm32_reset_assert,
.deassert = stm32_reset_deassert,
};
static const struct of_device_id stm32_reset_dt_ids[] = {
{ .compatible = "st,stm32-rcc", },
{ /* sentinel */ },
};
static int stm32_reset_probe(struct platform_device *pdev)
{
struct stm32_reset_data *data;
struct resource *res;
data = devm_kzalloc(&pdev->dev, sizeof(*data), GFP_KERNEL);
if (!data)
return -ENOMEM;
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
data->membase = devm_ioremap_resource(&pdev->dev, res);
if (IS_ERR(data->membase))
return PTR_ERR(data->membase);
spin_lock_init(&data->lock);
data->rcdev.owner = THIS_MODULE;
data->rcdev.nr_resets = resource_size(res) * 8;
data->rcdev.ops = &stm32_reset_ops;
data->rcdev.of_node = pdev->dev.of_node;
return devm_reset_controller_register(&pdev->dev, &data->rcdev);
}
static struct platform_driver stm32_reset_driver = {
.probe = stm32_reset_probe,
.driver = {
.name = "stm32-rcc-reset",
.of_match_table = stm32_reset_dt_ids,
},
};
builtin_platform_driver(stm32_reset_driver);
...@@ -22,64 +22,11 @@ ...@@ -22,64 +22,11 @@
#include <linux/spinlock.h> #include <linux/spinlock.h>
#include <linux/types.h> #include <linux/types.h>
struct sunxi_reset_data { #include "reset-simple.h"
spinlock_t lock;
void __iomem *membase;
struct reset_controller_dev rcdev;
};
static int sunxi_reset_assert(struct reset_controller_dev *rcdev,
unsigned long id)
{
struct sunxi_reset_data *data = container_of(rcdev,
struct sunxi_reset_data,
rcdev);
int reg_width = sizeof(u32);
int bank = id / (reg_width * BITS_PER_BYTE);
int offset = id % (reg_width * BITS_PER_BYTE);
unsigned long flags;
u32 reg;
spin_lock_irqsave(&data->lock, flags);
reg = readl(data->membase + (bank * reg_width));
writel(reg & ~BIT(offset), data->membase + (bank * reg_width));
spin_unlock_irqrestore(&data->lock, flags);
return 0;
}
static int sunxi_reset_deassert(struct reset_controller_dev *rcdev,
unsigned long id)
{
struct sunxi_reset_data *data = container_of(rcdev,
struct sunxi_reset_data,
rcdev);
int reg_width = sizeof(u32);
int bank = id / (reg_width * BITS_PER_BYTE);
int offset = id % (reg_width * BITS_PER_BYTE);
unsigned long flags;
u32 reg;
spin_lock_irqsave(&data->lock, flags);
reg = readl(data->membase + (bank * reg_width));
writel(reg | BIT(offset), data->membase + (bank * reg_width));
spin_unlock_irqrestore(&data->lock, flags);
return 0;
}
static const struct reset_control_ops sunxi_reset_ops = {
.assert = sunxi_reset_assert,
.deassert = sunxi_reset_deassert,
};
static int sunxi_reset_init(struct device_node *np) static int sunxi_reset_init(struct device_node *np)
{ {
struct sunxi_reset_data *data; struct reset_simple_data *data;
struct resource res; struct resource res;
resource_size_t size; resource_size_t size;
int ret; int ret;
...@@ -108,8 +55,9 @@ static int sunxi_reset_init(struct device_node *np) ...@@ -108,8 +55,9 @@ static int sunxi_reset_init(struct device_node *np)
data->rcdev.owner = THIS_MODULE; data->rcdev.owner = THIS_MODULE;
data->rcdev.nr_resets = size * 8; data->rcdev.nr_resets = size * 8;
data->rcdev.ops = &sunxi_reset_ops; data->rcdev.ops = &reset_simple_ops;
data->rcdev.of_node = np; data->rcdev.of_node = np;
data->active_low = true;
return reset_controller_register(&data->rcdev); return reset_controller_register(&data->rcdev);
...@@ -122,6 +70,8 @@ static int sunxi_reset_init(struct device_node *np) ...@@ -122,6 +70,8 @@ static int sunxi_reset_init(struct device_node *np)
* These are the reset controller we need to initialize early on in * These are the reset controller we need to initialize early on in
* our system, before we can even think of using a regular device * our system, before we can even think of using a regular device
* driver for it. * driver for it.
* The controllers that we can register through the regular device
* model are handled by the simple reset driver directly.
*/ */
static const struct of_device_id sunxi_early_reset_dt_ids[] __initconst = { static const struct of_device_id sunxi_early_reset_dt_ids[] __initconst = {
{ .compatible = "allwinner,sun6i-a31-ahb1-reset", }, { .compatible = "allwinner,sun6i-a31-ahb1-reset", },
...@@ -135,45 +85,3 @@ void __init sun6i_reset_init(void) ...@@ -135,45 +85,3 @@ void __init sun6i_reset_init(void)
for_each_matching_node(np, sunxi_early_reset_dt_ids) for_each_matching_node(np, sunxi_early_reset_dt_ids)
sunxi_reset_init(np); sunxi_reset_init(np);
} }
/*
* And these are the controllers we can register through the regular
* device model.
*/
static const struct of_device_id sunxi_reset_dt_ids[] = {
{ .compatible = "allwinner,sun6i-a31-clock-reset", },
{ /* sentinel */ },
};
static int sunxi_reset_probe(struct platform_device *pdev)
{
struct sunxi_reset_data *data;
struct resource *res;
data = devm_kzalloc(&pdev->dev, sizeof(*data), GFP_KERNEL);
if (!data)
return -ENOMEM;
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
data->membase = devm_ioremap_resource(&pdev->dev, res);
if (IS_ERR(data->membase))
return PTR_ERR(data->membase);
spin_lock_init(&data->lock);
data->rcdev.owner = THIS_MODULE;
data->rcdev.nr_resets = resource_size(res) * 8;
data->rcdev.ops = &sunxi_reset_ops;
data->rcdev.of_node = pdev->dev.of_node;
return devm_reset_controller_register(&pdev->dev, &data->rcdev);
}
static struct platform_driver sunxi_reset_driver = {
.probe = sunxi_reset_probe,
.driver = {
.name = "sunxi-reset",
.of_match_table = sunxi_reset_dt_ids,
},
};
builtin_platform_driver(sunxi_reset_driver);
...@@ -58,6 +58,7 @@ static const struct uniphier_reset_data uniphier_ld4_sys_reset_data[] = { ...@@ -58,6 +58,7 @@ static const struct uniphier_reset_data uniphier_ld4_sys_reset_data[] = {
static const struct uniphier_reset_data uniphier_pro4_sys_reset_data[] = { static const struct uniphier_reset_data uniphier_pro4_sys_reset_data[] = {
UNIPHIER_RESETX(2, 0x2000, 2), /* NAND */ UNIPHIER_RESETX(2, 0x2000, 2), /* NAND */
UNIPHIER_RESETX(6, 0x2000, 12), /* Ether */
UNIPHIER_RESETX(8, 0x2000, 10), /* STDMAC (HSC, MIO, RLE) */ UNIPHIER_RESETX(8, 0x2000, 10), /* STDMAC (HSC, MIO, RLE) */
UNIPHIER_RESETX(12, 0x2000, 6), /* GIO (Ether, SATA, USB3) */ UNIPHIER_RESETX(12, 0x2000, 6), /* GIO (Ether, SATA, USB3) */
UNIPHIER_RESETX(14, 0x2000, 17), /* USB30 */ UNIPHIER_RESETX(14, 0x2000, 17), /* USB30 */
...@@ -76,6 +77,7 @@ static const struct uniphier_reset_data uniphier_pro5_sys_reset_data[] = { ...@@ -76,6 +77,7 @@ static const struct uniphier_reset_data uniphier_pro5_sys_reset_data[] = {
static const struct uniphier_reset_data uniphier_pxs2_sys_reset_data[] = { static const struct uniphier_reset_data uniphier_pxs2_sys_reset_data[] = {
UNIPHIER_RESETX(2, 0x2000, 2), /* NAND */ UNIPHIER_RESETX(2, 0x2000, 2), /* NAND */
UNIPHIER_RESETX(6, 0x2000, 12), /* Ether */
UNIPHIER_RESETX(8, 0x2000, 10), /* STDMAC (HSC, RLE) */ UNIPHIER_RESETX(8, 0x2000, 10), /* STDMAC (HSC, RLE) */
UNIPHIER_RESETX(14, 0x2000, 17), /* USB30 */ UNIPHIER_RESETX(14, 0x2000, 17), /* USB30 */
UNIPHIER_RESETX(15, 0x2004, 17), /* USB31 */ UNIPHIER_RESETX(15, 0x2004, 17), /* USB31 */
...@@ -92,6 +94,7 @@ static const struct uniphier_reset_data uniphier_pxs2_sys_reset_data[] = { ...@@ -92,6 +94,7 @@ static const struct uniphier_reset_data uniphier_pxs2_sys_reset_data[] = {
static const struct uniphier_reset_data uniphier_ld11_sys_reset_data[] = { static const struct uniphier_reset_data uniphier_ld11_sys_reset_data[] = {
UNIPHIER_RESETX(2, 0x200c, 0), /* NAND */ UNIPHIER_RESETX(2, 0x200c, 0), /* NAND */
UNIPHIER_RESETX(4, 0x200c, 2), /* eMMC */ UNIPHIER_RESETX(4, 0x200c, 2), /* eMMC */
UNIPHIER_RESETX(6, 0x200c, 6), /* Ether */
UNIPHIER_RESETX(8, 0x200c, 8), /* STDMAC (HSC, MIO) */ UNIPHIER_RESETX(8, 0x200c, 8), /* STDMAC (HSC, MIO) */
UNIPHIER_RESETX(40, 0x2008, 0), /* AIO */ UNIPHIER_RESETX(40, 0x2008, 0), /* AIO */
UNIPHIER_RESETX(41, 0x2008, 1), /* EVEA */ UNIPHIER_RESETX(41, 0x2008, 1), /* EVEA */
...@@ -102,6 +105,7 @@ static const struct uniphier_reset_data uniphier_ld11_sys_reset_data[] = { ...@@ -102,6 +105,7 @@ static const struct uniphier_reset_data uniphier_ld11_sys_reset_data[] = {
static const struct uniphier_reset_data uniphier_ld20_sys_reset_data[] = { static const struct uniphier_reset_data uniphier_ld20_sys_reset_data[] = {
UNIPHIER_RESETX(2, 0x200c, 0), /* NAND */ UNIPHIER_RESETX(2, 0x200c, 0), /* NAND */
UNIPHIER_RESETX(4, 0x200c, 2), /* eMMC */ UNIPHIER_RESETX(4, 0x200c, 2), /* eMMC */
UNIPHIER_RESETX(6, 0x200c, 6), /* Ether */
UNIPHIER_RESETX(8, 0x200c, 8), /* STDMAC (HSC) */ UNIPHIER_RESETX(8, 0x200c, 8), /* STDMAC (HSC) */
UNIPHIER_RESETX(12, 0x200c, 5), /* GIO (PCIe, USB3) */ UNIPHIER_RESETX(12, 0x200c, 5), /* GIO (PCIe, USB3) */
UNIPHIER_RESETX(16, 0x200c, 12), /* USB30-PHY0 */ UNIPHIER_RESETX(16, 0x200c, 12), /* USB30-PHY0 */
...@@ -114,6 +118,20 @@ static const struct uniphier_reset_data uniphier_ld20_sys_reset_data[] = { ...@@ -114,6 +118,20 @@ static const struct uniphier_reset_data uniphier_ld20_sys_reset_data[] = {
UNIPHIER_RESET_END, 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(8, 0x200c, 12), /* STDMAC */
UNIPHIER_RESETX(12, 0x200c, 4), /* USB30 link (GIO0) */
UNIPHIER_RESETX(13, 0x200c, 5), /* USB31 link (GIO1) */
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 */ /* Media I/O reset data */
#define UNIPHIER_MIO_RESET_SD(id, ch) \ #define UNIPHIER_MIO_RESET_SD(id, ch) \
UNIPHIER_RESETX((id), 0x110 + 0x200 * (ch), 0) UNIPHIER_RESETX((id), 0x110 + 0x200 * (ch), 0)
...@@ -359,6 +377,10 @@ static const struct of_device_id uniphier_reset_match[] = { ...@@ -359,6 +377,10 @@ static const struct of_device_id uniphier_reset_match[] = {
.compatible = "socionext,uniphier-ld20-reset", .compatible = "socionext,uniphier-ld20-reset",
.data = uniphier_ld20_sys_reset_data, .data = uniphier_ld20_sys_reset_data,
}, },
{
.compatible = "socionext,uniphier-pxs3-reset",
.data = uniphier_pxs3_sys_reset_data,
},
/* Media I/O reset, SD reset */ /* Media I/O reset, SD reset */
{ {
.compatible = "socionext,uniphier-ld4-mio-reset", .compatible = "socionext,uniphier-ld4-mio-reset",
...@@ -392,6 +414,10 @@ static const struct of_device_id uniphier_reset_match[] = { ...@@ -392,6 +414,10 @@ static const struct of_device_id uniphier_reset_match[] = {
.compatible = "socionext,uniphier-ld20-sd-reset", .compatible = "socionext,uniphier-ld20-sd-reset",
.data = uniphier_pro5_sd_reset_data, .data = uniphier_pro5_sd_reset_data,
}, },
{
.compatible = "socionext,uniphier-pxs3-sd-reset",
.data = uniphier_pro5_sd_reset_data,
},
/* Peripheral reset */ /* Peripheral reset */
{ {
.compatible = "socionext,uniphier-ld4-peri-reset", .compatible = "socionext,uniphier-ld4-peri-reset",
...@@ -421,6 +447,10 @@ static const struct of_device_id uniphier_reset_match[] = { ...@@ -421,6 +447,10 @@ static const struct of_device_id uniphier_reset_match[] = {
.compatible = "socionext,uniphier-ld20-peri-reset", .compatible = "socionext,uniphier-ld20-peri-reset",
.data = uniphier_pro4_peri_reset_data, .data = uniphier_pro4_peri_reset_data,
}, },
{
.compatible = "socionext,uniphier-pxs3-peri-reset",
.data = uniphier_pro4_peri_reset_data,
},
/* Analog signal amplifiers reset */ /* Analog signal amplifiers reset */
{ {
.compatible = "socionext,uniphier-ld11-adamv-reset", .compatible = "socionext,uniphier-ld11-adamv-reset",
......
/*
* ZTE's zx2967 family reset controller driver
*
* Copyright (C) 2017 ZTE Ltd.
*
* Author: Baoyou Xie <baoyou.xie@linaro.org>
*
* License terms: GNU General Public License (GPL) version 2
*/
#include <linux/of_address.h>
#include <linux/platform_device.h>
#include <linux/reset-controller.h>
struct zx2967_reset {
void __iomem *reg_base;
spinlock_t lock;
struct reset_controller_dev rcdev;
};
static int zx2967_reset_act(struct reset_controller_dev *rcdev,
unsigned long id, bool assert)
{
struct zx2967_reset *reset = NULL;
int bank = id / 32;
int offset = id % 32;
u32 reg;
unsigned long flags;
reset = container_of(rcdev, struct zx2967_reset, rcdev);
spin_lock_irqsave(&reset->lock, flags);
reg = readl_relaxed(reset->reg_base + (bank * 4));
if (assert)
reg &= ~BIT(offset);
else
reg |= BIT(offset);
writel_relaxed(reg, reset->reg_base + (bank * 4));
spin_unlock_irqrestore(&reset->lock, flags);
return 0;
}
static int zx2967_reset_assert(struct reset_controller_dev *rcdev,
unsigned long id)
{
return zx2967_reset_act(rcdev, id, true);
}
static int zx2967_reset_deassert(struct reset_controller_dev *rcdev,
unsigned long id)
{
return zx2967_reset_act(rcdev, id, false);
}
static const struct reset_control_ops zx2967_reset_ops = {
.assert = zx2967_reset_assert,
.deassert = zx2967_reset_deassert,
};
static int zx2967_reset_probe(struct platform_device *pdev)
{
struct zx2967_reset *reset;
struct resource *res;
reset = devm_kzalloc(&pdev->dev, sizeof(*reset), GFP_KERNEL);
if (!reset)
return -ENOMEM;
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
reset->reg_base = devm_ioremap_resource(&pdev->dev, res);
if (IS_ERR(reset->reg_base))
return PTR_ERR(reset->reg_base);
spin_lock_init(&reset->lock);
reset->rcdev.owner = THIS_MODULE;
reset->rcdev.nr_resets = resource_size(res) * 8;
reset->rcdev.ops = &zx2967_reset_ops;
reset->rcdev.of_node = pdev->dev.of_node;
return devm_reset_controller_register(&pdev->dev, &reset->rcdev);
}
static const struct of_device_id zx2967_reset_dt_ids[] = {
{ .compatible = "zte,zx296718-reset", },
{},
};
static struct platform_driver zx2967_reset_driver = {
.probe = zx2967_reset_probe,
.driver = {
.name = "zx2967-reset",
.of_match_table = zx2967_reset_dt_ids,
},
};
builtin_platform_driver(zx2967_reset_driver);
/*
* Copyright (c) 2017 MediaTek Inc.
* Author: Sean Wang <sean.wang@mediatek.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*/
#ifndef _DT_BINDINGS_RESET_CONTROLLER_MT7622
#define _DT_BINDINGS_RESET_CONTROLLER_MT7622
/* INFRACFG resets */
#define MT7622_INFRA_EMI_REG_RST 0
#define MT7622_INFRA_DRAMC0_A0_RST 1
#define MT7622_INFRA_APCIRQ_EINT_RST 3
#define MT7622_INFRA_APXGPT_RST 4
#define MT7622_INFRA_SCPSYS_RST 5
#define MT7622_INFRA_PMIC_WRAP_RST 7
#define MT7622_INFRA_IRRX_RST 9
#define MT7622_INFRA_EMI_RST 16
#define MT7622_INFRA_WED0_RST 17
#define MT7622_INFRA_DRAMC_RST 18
#define MT7622_INFRA_CCI_INTF_RST 19
#define MT7622_INFRA_TRNG_RST 21
#define MT7622_INFRA_SYSIRQ_RST 22
#define MT7622_INFRA_WED1_RST 25
/* PERICFG Subsystem resets */
#define MT7622_PERI_UART0_SW_RST 0
#define MT7622_PERI_UART1_SW_RST 1
#define MT7622_PERI_UART2_SW_RST 2
#define MT7622_PERI_UART3_SW_RST 3
#define MT7622_PERI_UART4_SW_RST 4
#define MT7622_PERI_BTIF_SW_RST 6
#define MT7622_PERI_PWM_SW_RST 8
#define MT7622_PERI_AUXADC_SW_RST 10
#define MT7622_PERI_DMA_SW_RST 11
#define MT7622_PERI_IRTX_SW_RST 13
#define MT7622_PERI_NFI_SW_RST 14
#define MT7622_PERI_THERM_SW_RST 16
#define MT7622_PERI_MSDC0_SW_RST 19
#define MT7622_PERI_MSDC1_SW_RST 20
#define MT7622_PERI_I2C0_SW_RST 22
#define MT7622_PERI_I2C1_SW_RST 23
#define MT7622_PERI_I2C2_SW_RST 24
#define MT7622_PERI_SPI0_SW_RST 33
#define MT7622_PERI_SPI1_SW_RST 34
#define MT7622_PERI_FLASHIF_SW_RST 36
/* TOPRGU resets */
#define MT7622_TOPRGU_INFRA_RST 0
#define MT7622_TOPRGU_ETHDMA_RST 1
#define MT7622_TOPRGU_DDRPHY_RST 6
#define MT7622_TOPRGU_INFRA_AO_RST 8
#define MT7622_TOPRGU_CONN_RST 9
#define MT7622_TOPRGU_APMIXED_RST 10
#define MT7622_TOPRGU_CONN_MCU_RST 12
/* PCIe/SATA Subsystem resets */
#define MT7622_SATA_PHY_REG_RST 12
#define MT7622_SATA_PHY_SW_RST 13
#define MT7622_SATA_AXI_BUS_RST 15
#define MT7622_PCIE1_CORE_RST 19
#define MT7622_PCIE1_MMIO_RST 20
#define MT7622_PCIE1_HRST 21
#define MT7622_PCIE1_USER_RST 22
#define MT7622_PCIE1_PIPE_RST 23
#define MT7622_PCIE0_CORE_RST 27
#define MT7622_PCIE0_MMIO_RST 28
#define MT7622_PCIE0_HRST 29
#define MT7622_PCIE0_USER_RST 30
#define MT7622_PCIE0_PIPE_RST 31
/* SSUSB Subsystem resets */
#define MT7622_SSUSB_PHY_PWR_RST 3
#define MT7622_SSUSB_MAC_PWR_RST 4
/* ETHSYS Subsystem resets */
#define MT7622_ETHSYS_SYS_RST 0
#define MT7622_ETHSYS_MCM_RST 2
#define MT7622_ETHSYS_HSDMA_RST 5
#define MT7622_ETHSYS_FE_RST 6
#define MT7622_ETHSYS_GMAC_RST 23
#define MT7622_ETHSYS_EPHY_RST 24
#define MT7622_ETHSYS_CRYPTO_RST 29
#define MT7622_ETHSYS_PPE_RST 31
#endif /* _DT_BINDINGS_RESET_CONTROLLER_MT7622 */
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