Commit a7639136 authored by Lee Jones's avatar Lee Jones

Merge tag 'ib-mfd-watchdog-v5.13' into ibs-for-mfd-merged

Immutable branch between MFD and Watchdog due for the v5.13 merge window
parents 1658d624 42fc191d
# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
%YAML 1.2
---
$id: http://devicetree.org/schemas/mfd/rohm,bd9576-pmic.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#
title: ROHM BD9576MUF and BD9573MUF Power Management Integrated Circuit bindings
maintainers:
- Matti Vaittinen <matti.vaittinen@fi.rohmeurope.com>
description: |
BD9576MUF and BD9573MUF are power management ICs primarily intended for
powering the R-Car series processors.
The IC provides 6 power outputs with configurable sequencing and safety
monitoring. A watchdog logic with slow ping/windowed modes is also included.
properties:
compatible:
enum:
- rohm,bd9576
- rohm,bd9573
reg:
description:
I2C slave address.
maxItems: 1
interrupts:
maxItems: 1
rohm,vout1-en-low:
description:
BD9576 and BD9573 VOUT1 regulator enable state can be individually
controlled by a GPIO. This is dictated by state of vout1-en pin during
the PMIC startup. If vout1-en is LOW during PMIC startup then the VOUT1
enable sate is controlled via this pin. Set this property if vout1-en
is wired to be down at PMIC start-up.
type: boolean
rohm,vout1-en-gpios:
description:
GPIO specifier to specify the GPIO connected to vout1-en for vout1 ON/OFF
state control.
maxItems: 1
rohm,ddr-sel-low:
description:
The BD9576 and BD9573 output voltage for DDR can be selected by setting
the ddr-sel pin low or high. Set this property if ddr-sel is grounded.
type: boolean
rohm,watchdog-enable-gpios:
description: The GPIO line used to enable the watchdog.
maxItems: 1
rohm,watchdog-ping-gpios:
description: The GPIO line used to ping the watchdog.
maxItems: 1
rohm,hw-timeout-ms:
maxItems: 2
description:
Watchog timeout in milliseconds. If single value is given it is
the maximum timeout. Eg. if pinging watchdog is not done within this time
limit the watchdog will be triggered. If two values are given watchdog
is configured in "window mode". Then first value is limit for short-ping
Eg. if watchdog is pinged sooner than that the watchdog will trigger.
When two values is given the second value is the maximum timeout.
# (HW) minimum for short timeout is 2ms, maximum 220 ms.
# (HW) minimum for max timeout is 4ms, maximum 4416 ms.
regulators:
$ref: ../regulator/rohm,bd9576-regulator.yaml
description:
List of child nodes that specify the regulators.
required:
- compatible
- reg
- regulators
additionalProperties: false
examples:
- |
#include <dt-bindings/gpio/gpio.h>
#include <dt-bindings/leds/common.h>
i2c {
#address-cells = <1>;
#size-cells = <0>;
pmic: pmic@30 {
compatible = "rohm,bd9576";
reg = <0x30>;
rohm,vout1-en-low;
rohm,vout1-en-gpios = <&gpio2 6 GPIO_ACTIVE_HIGH>;
rohm,ddr-sel-low;
rohm,watchdog-enable-gpios = <&gpio2 6 GPIO_ACTIVE_HIGH>;
rohm,watchdog-ping-gpios = <&gpio2 7 GPIO_ACTIVE_HIGH>;
rohm,hw-timeout-ms = <150>, <2300>;
regulators {
boost1: regulator-vd50 {
regulator-name = "VD50";
};
buck1: regulator-vd18 {
regulator-name = "VD18";
};
buck2: regulator-vdddr {
regulator-name = "VDDDR";
};
buck3: regulator-vd10 {
regulator-name = "VD10";
};
ldo: regulator-voutl1 {
regulator-name = "VOUTL1";
};
sw: regulator-vouts1 {
regulator-name = "VOUTS1";
};
};
};
};
......@@ -15478,18 +15478,22 @@ F: drivers/gpio/gpio-bd71828.c
F: drivers/mfd/rohm-bd70528.c
F: drivers/mfd/rohm-bd71828.c
F: drivers/mfd/rohm-bd718x7.c
F: drivers/mfd/rohm-bd9576.c
F: drivers/power/supply/bd70528-charger.c
F: drivers/regulator/bd70528-regulator.c
F: drivers/regulator/bd71815-regulator.c
F: drivers/regulator/bd71828-regulator.c
F: drivers/regulator/bd718x7-regulator.c
F: drivers/regulator/bd9576-regulator.c
F: drivers/regulator/rohm-regulator.c
F: drivers/rtc/rtc-bd70528.c
F: drivers/watchdog/bd70528_wdt.c
F: drivers/watchdog/bd9576_wdt.c
F: include/linux/mfd/rohm-bd70528.h
F: include/linux/mfd/rohm-bd71815.h
F: include/linux/mfd/rohm-bd71828.h
F: include/linux/mfd/rohm-bd718x7.h
F: include/linux/mfd/rohm-bd957x.h
F: include/linux/mfd/rohm-generic.h
F: include/linux/mfd/rohm-shared.h
......
......@@ -2001,6 +2001,17 @@ config MFD_ROHM_BD71828
also a single-cell linear charger, a Coulomb counter, a real-time
clock (RTC), GPIOs and a 32.768 kHz clock gate.
config MFD_ROHM_BD957XMUF
tristate "ROHM BD9576MUF and BD9573MUF Power Management ICs"
depends on I2C=y
depends on OF
select REGMAP_I2C
select MFD_CORE
help
Select this option to get support for the ROHM BD9576MUF and
BD9573MUF Power Management ICs. BD9576 and BD9573 are primarily
designed to be used to power R-Car series processors.
config MFD_STM32_LPTIMER
tristate "Support for STM32 Low-Power Timer"
depends on (ARCH_STM32 && OF) || COMPILE_TEST
......
......@@ -262,6 +262,7 @@ obj-$(CONFIG_RAVE_SP_CORE) += rave-sp.o
obj-$(CONFIG_MFD_ROHM_BD70528) += rohm-bd70528.o
obj-$(CONFIG_MFD_ROHM_BD71828) += rohm-bd71828.o
obj-$(CONFIG_MFD_ROHM_BD718XX) += rohm-bd718x7.o
obj-$(CONFIG_MFD_ROHM_BD957XMUF) += rohm-bd9576.o
obj-$(CONFIG_MFD_STMFX) += stmfx.o
obj-$(CONFIG_MFD_KHADAS_MCU) += khadas-mcu.o
obj-$(CONFIG_MFD_ACER_A500_EC) += acer-ec-a500.o
......
// SPDX-License-Identifier: GPL-2.0-or-later
/*
* Copyright (C) 2021 ROHM Semiconductors
*
* ROHM BD9576MUF and BD9573MUF PMIC driver
*/
#include <linux/i2c.h>
#include <linux/interrupt.h>
#include <linux/ioport.h>
#include <linux/irq.h>
#include <linux/mfd/core.h>
#include <linux/mfd/rohm-bd957x.h>
#include <linux/mfd/rohm-generic.h>
#include <linux/module.h>
#include <linux/of_device.h>
#include <linux/regmap.h>
#include <linux/types.h>
enum {
BD957X_REGULATOR_CELL,
BD957X_WDT_CELL,
};
/*
* Due to the BD9576MUF nasty IRQ behaiour we don't always populate IRQs.
* These will be added to regulator resources only if IRQ information for the
* PMIC is populated in device-tree.
*/
static const struct resource bd9576_regulator_irqs[] = {
DEFINE_RES_IRQ_NAMED(BD9576_INT_THERM, "bd9576-temp"),
DEFINE_RES_IRQ_NAMED(BD9576_INT_OVD, "bd9576-ovd"),
DEFINE_RES_IRQ_NAMED(BD9576_INT_UVD, "bd9576-uvd"),
};
static struct mfd_cell bd9573_mfd_cells[] = {
[BD957X_REGULATOR_CELL] = { .name = "bd9573-regulator", },
[BD957X_WDT_CELL] = { .name = "bd9576-wdt", },
};
static struct mfd_cell bd9576_mfd_cells[] = {
[BD957X_REGULATOR_CELL] = { .name = "bd9576-regulator", },
[BD957X_WDT_CELL] = { .name = "bd9576-wdt", },
};
static const struct regmap_range volatile_ranges[] = {
regmap_reg_range(BD957X_REG_SMRB_ASSERT, BD957X_REG_SMRB_ASSERT),
regmap_reg_range(BD957X_REG_PMIC_INTERNAL_STAT,
BD957X_REG_PMIC_INTERNAL_STAT),
regmap_reg_range(BD957X_REG_INT_THERM_STAT, BD957X_REG_INT_THERM_STAT),
regmap_reg_range(BD957X_REG_INT_OVP_STAT, BD957X_REG_INT_SYS_STAT),
regmap_reg_range(BD957X_REG_INT_MAIN_STAT, BD957X_REG_INT_MAIN_STAT),
};
static const struct regmap_access_table volatile_regs = {
.yes_ranges = &volatile_ranges[0],
.n_yes_ranges = ARRAY_SIZE(volatile_ranges),
};
static struct regmap_config bd957x_regmap = {
.reg_bits = 8,
.val_bits = 8,
.volatile_table = &volatile_regs,
.max_register = BD957X_MAX_REGISTER,
.cache_type = REGCACHE_RBTREE,
};
static struct regmap_irq bd9576_irqs[] = {
REGMAP_IRQ_REG(BD9576_INT_THERM, 0, BD957X_MASK_INT_MAIN_THERM),
REGMAP_IRQ_REG(BD9576_INT_OVP, 0, BD957X_MASK_INT_MAIN_OVP),
REGMAP_IRQ_REG(BD9576_INT_SCP, 0, BD957X_MASK_INT_MAIN_SCP),
REGMAP_IRQ_REG(BD9576_INT_OCP, 0, BD957X_MASK_INT_MAIN_OCP),
REGMAP_IRQ_REG(BD9576_INT_OVD, 0, BD957X_MASK_INT_MAIN_OVD),
REGMAP_IRQ_REG(BD9576_INT_UVD, 0, BD957X_MASK_INT_MAIN_UVD),
REGMAP_IRQ_REG(BD9576_INT_UVP, 0, BD957X_MASK_INT_MAIN_UVP),
REGMAP_IRQ_REG(BD9576_INT_SYS, 0, BD957X_MASK_INT_MAIN_SYS),
};
static struct regmap_irq_chip bd9576_irq_chip = {
.name = "bd9576_irq",
.irqs = &bd9576_irqs[0],
.num_irqs = ARRAY_SIZE(bd9576_irqs),
.status_base = BD957X_REG_INT_MAIN_STAT,
.mask_base = BD957X_REG_INT_MAIN_MASK,
.ack_base = BD957X_REG_INT_MAIN_STAT,
.init_ack_masked = true,
.num_regs = 1,
.irq_reg_stride = 1,
};
static int bd957x_i2c_probe(struct i2c_client *i2c,
const struct i2c_device_id *id)
{
int ret;
struct regmap *regmap;
struct mfd_cell *cells;
int num_cells;
unsigned long chip_type;
struct irq_domain *domain;
bool usable_irqs;
chip_type = (unsigned long)of_device_get_match_data(&i2c->dev);
switch (chip_type) {
case ROHM_CHIP_TYPE_BD9576:
cells = bd9576_mfd_cells;
num_cells = ARRAY_SIZE(bd9576_mfd_cells);
usable_irqs = !!i2c->irq;
break;
case ROHM_CHIP_TYPE_BD9573:
cells = bd9573_mfd_cells;
num_cells = ARRAY_SIZE(bd9573_mfd_cells);
/*
* BD9573 only supports fatal IRQs which we can not handle
* because SoC is going to lose the power.
*/
usable_irqs = false;
break;
default:
dev_err(&i2c->dev, "Unknown device type");
return -EINVAL;
}
regmap = devm_regmap_init_i2c(i2c, &bd957x_regmap);
if (IS_ERR(regmap)) {
dev_err(&i2c->dev, "Failed to initialize Regmap\n");
return PTR_ERR(regmap);
}
/*
* BD9576 behaves badly. It kepts IRQ line asserted for the whole
* duration of detected HW condition (like over temperature). So we
* don't require IRQ to be populated.
* If IRQ information is not given, then we mask all IRQs and do not
* provide IRQ resources to regulator driver - which then just omits
* the notifiers.
*/
if (usable_irqs) {
struct regmap_irq_chip_data *irq_data;
struct mfd_cell *regulators;
regulators = &bd9576_mfd_cells[BD957X_REGULATOR_CELL];
regulators->resources = bd9576_regulator_irqs;
regulators->num_resources = ARRAY_SIZE(bd9576_regulator_irqs);
ret = devm_regmap_add_irq_chip(&i2c->dev, regmap, i2c->irq,
IRQF_ONESHOT, 0,
&bd9576_irq_chip, &irq_data);
if (ret) {
dev_err(&i2c->dev, "Failed to add IRQ chip\n");
return ret;
}
domain = regmap_irq_get_domain(irq_data);
} else {
ret = regmap_update_bits(regmap, BD957X_REG_INT_MAIN_MASK,
BD957X_MASK_INT_ALL,
BD957X_MASK_INT_ALL);
if (ret)
return ret;
domain = NULL;
}
ret = devm_mfd_add_devices(&i2c->dev, PLATFORM_DEVID_AUTO, cells,
num_cells, NULL, 0, domain);
if (ret)
dev_err(&i2c->dev, "Failed to create subdevices\n");
return ret;
}
static const struct of_device_id bd957x_of_match[] = {
{ .compatible = "rohm,bd9576", .data = (void *)ROHM_CHIP_TYPE_BD9576, },
{ .compatible = "rohm,bd9573", .data = (void *)ROHM_CHIP_TYPE_BD9573, },
{ },
};
MODULE_DEVICE_TABLE(of, bd957x_of_match);
static struct i2c_driver bd957x_drv = {
.driver = {
.name = "rohm-bd957x",
.of_match_table = bd957x_of_match,
},
.probe = &bd957x_i2c_probe,
};
module_i2c_driver(bd957x_drv);
MODULE_AUTHOR("Matti Vaittinen <matti.vaittinen@fi.rohmeurope.com>");
MODULE_DESCRIPTION("ROHM BD9576MUF and BD9573MUF Power Management IC driver");
MODULE_LICENSE("GPL");
......@@ -172,6 +172,19 @@ config BD70528_WATCHDOG
Alternatively say M to compile the driver as a module,
which will be called bd70528_wdt.
config BD957XMUF_WATCHDOG
tristate "ROHM BD9576MUF and BD9573MUF PMIC Watchdog"
depends on MFD_ROHM_BD957XMUF
select WATCHDOG_CORE
help
Support for the watchdog in the ROHM BD9576 and BD9573 PMICs.
These PMIC ICs contain watchdog block which can be configured
to toggle reset line if SoC fails to ping watchdog via GPIO.
Say Y here to include support for the ROHM BD9576 or BD9573
watchdog. Alternatively say M to compile the driver as a module,
which will be called bd9576_wdt.
config DA9052_WATCHDOG
tristate "Dialog DA9052 Watchdog"
depends on PMIC_DA9052 || COMPILE_TEST
......
......@@ -204,6 +204,7 @@ obj-$(CONFIG_XEN_WDT) += xen_wdt.o
# Architecture Independent
obj-$(CONFIG_BD70528_WATCHDOG) += bd70528_wdt.o
obj-$(CONFIG_BD957XMUF_WATCHDOG) += bd9576_wdt.o
obj-$(CONFIG_DA9052_WATCHDOG) += da9052_wdt.o
obj-$(CONFIG_DA9055_WATCHDOG) += da9055_wdt.o
obj-$(CONFIG_DA9062_WATCHDOG) += da9062_wdt.o
......
// SPDX-License-Identifier: GPL-2.0-or-later
/*
* Copyright (C) 2020 ROHM Semiconductors
*
* ROHM BD9576MUF and BD9573MUF Watchdog driver
*/
#include <linux/err.h>
#include <linux/gpio/consumer.h>
#include <linux/mfd/rohm-bd957x.h>
#include <linux/module.h>
#include <linux/of.h>
#include <linux/platform_device.h>
#include <linux/regmap.h>
#include <linux/watchdog.h>
static bool nowayout;
module_param(nowayout, bool, 0);
MODULE_PARM_DESC(nowayout,
"Watchdog cannot be stopped once started (default=\"false\")");
#define HW_MARGIN_MIN 2
#define HW_MARGIN_MAX 4416
#define BD957X_WDT_DEFAULT_MARGIN 4416
#define WATCHDOG_TIMEOUT 30
struct bd9576_wdt_priv {
struct gpio_desc *gpiod_ping;
struct gpio_desc *gpiod_en;
struct device *dev;
struct regmap *regmap;
bool always_running;
struct watchdog_device wdd;
};
static void bd9576_wdt_disable(struct bd9576_wdt_priv *priv)
{
gpiod_set_value_cansleep(priv->gpiod_en, 0);
}
static int bd9576_wdt_ping(struct watchdog_device *wdd)
{
struct bd9576_wdt_priv *priv = watchdog_get_drvdata(wdd);
/* Pulse */
gpiod_set_value_cansleep(priv->gpiod_ping, 1);
gpiod_set_value_cansleep(priv->gpiod_ping, 0);
return 0;
}
static int bd9576_wdt_start(struct watchdog_device *wdd)
{
struct bd9576_wdt_priv *priv = watchdog_get_drvdata(wdd);
gpiod_set_value_cansleep(priv->gpiod_en, 1);
return bd9576_wdt_ping(wdd);
}
static int bd9576_wdt_stop(struct watchdog_device *wdd)
{
struct bd9576_wdt_priv *priv = watchdog_get_drvdata(wdd);
if (!priv->always_running)
bd9576_wdt_disable(priv);
else
set_bit(WDOG_HW_RUNNING, &wdd->status);
return 0;
}
static const struct watchdog_info bd957x_wdt_ident = {
.options = WDIOF_MAGICCLOSE | WDIOF_KEEPALIVEPING |
WDIOF_SETTIMEOUT,
.identity = "BD957x Watchdog",
};
static const struct watchdog_ops bd957x_wdt_ops = {
.owner = THIS_MODULE,
.start = bd9576_wdt_start,
.stop = bd9576_wdt_stop,
.ping = bd9576_wdt_ping,
};
/* Unit is hundreds of uS */
#define FASTNG_MIN 23
static int find_closest_fast(int target, int *sel, int *val)
{
int i;
int window = FASTNG_MIN;
for (i = 0; i < 8 && window < target; i++)
window <<= 1;
*val = window;
*sel = i;
if (i == 8)
return -EINVAL;
return 0;
}
static int find_closest_slow_by_fast(int fast_val, int target, int *slowsel)
{
int sel;
static const int multipliers[] = {2, 3, 7, 15};
for (sel = 0; sel < ARRAY_SIZE(multipliers) &&
multipliers[sel] * fast_val < target; sel++)
;
if (sel == ARRAY_SIZE(multipliers))
return -EINVAL;
*slowsel = sel;
return 0;
}
static int find_closest_slow(int target, int *slow_sel, int *fast_sel)
{
static const int multipliers[] = {2, 3, 7, 15};
int i, j;
int val = 0;
int window = FASTNG_MIN;
for (i = 0; i < 8; i++) {
for (j = 0; j < ARRAY_SIZE(multipliers); j++) {
int slow;
slow = window * multipliers[j];
if (slow >= target && (!val || slow < val)) {
val = slow;
*fast_sel = i;
*slow_sel = j;
}
}
window <<= 1;
}
if (!val)
return -EINVAL;
return 0;
}
#define BD957X_WDG_TYPE_WINDOW BIT(5)
#define BD957X_WDG_TYPE_SLOW 0
#define BD957X_WDG_TYPE_MASK BIT(5)
#define BD957X_WDG_NG_RATIO_MASK 0x18
#define BD957X_WDG_FASTNG_MASK 0x7
static int bd957x_set_wdt_mode(struct bd9576_wdt_priv *priv, int hw_margin,
int hw_margin_min)
{
int ret, fastng, slowng, type, reg, mask;
struct device *dev = priv->dev;
/* convert to 100uS */
hw_margin *= 10;
hw_margin_min *= 10;
if (hw_margin_min) {
int min;
type = BD957X_WDG_TYPE_WINDOW;
dev_dbg(dev, "Setting type WINDOW 0x%x\n", type);
ret = find_closest_fast(hw_margin_min, &fastng, &min);
if (ret) {
dev_err(dev, "bad WDT window for fast timeout\n");
return ret;
}
ret = find_closest_slow_by_fast(min, hw_margin, &slowng);
if (ret) {
dev_err(dev, "bad WDT window\n");
return ret;
}
} else {
type = BD957X_WDG_TYPE_SLOW;
dev_dbg(dev, "Setting type SLOW 0x%x\n", type);
ret = find_closest_slow(hw_margin, &slowng, &fastng);
if (ret) {
dev_err(dev, "bad WDT window\n");
return ret;
}
}
slowng <<= ffs(BD957X_WDG_NG_RATIO_MASK) - 1;
reg = type | slowng | fastng;
mask = BD957X_WDG_TYPE_MASK | BD957X_WDG_NG_RATIO_MASK |
BD957X_WDG_FASTNG_MASK;
ret = regmap_update_bits(priv->regmap, BD957X_REG_WDT_CONF,
mask, reg);
return ret;
}
static int bd9576_wdt_probe(struct platform_device *pdev)
{
struct device *dev = &pdev->dev;
struct device_node *np = dev->parent->of_node;
struct bd9576_wdt_priv *priv;
u32 hw_margin[2];
u32 hw_margin_max = BD957X_WDT_DEFAULT_MARGIN, hw_margin_min = 0;
int ret;
priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL);
if (!priv)
return -ENOMEM;
platform_set_drvdata(pdev, priv);
priv->dev = dev;
priv->regmap = dev_get_regmap(dev->parent, NULL);
if (!priv->regmap) {
dev_err(dev, "No regmap found\n");
return -ENODEV;
}
priv->gpiod_en = devm_gpiod_get_from_of_node(dev, dev->parent->of_node,
"rohm,watchdog-enable-gpios",
0, GPIOD_OUT_LOW,
"watchdog-enable");
if (IS_ERR(priv->gpiod_en))
return dev_err_probe(dev, PTR_ERR(priv->gpiod_en),
"getting watchdog-enable GPIO failed\n");
priv->gpiod_ping = devm_gpiod_get_from_of_node(dev, dev->parent->of_node,
"rohm,watchdog-ping-gpios",
0, GPIOD_OUT_LOW,
"watchdog-ping");
if (IS_ERR(priv->gpiod_ping))
return dev_err_probe(dev, PTR_ERR(priv->gpiod_ping),
"getting watchdog-ping GPIO failed\n");
ret = of_property_read_variable_u32_array(np, "rohm,hw-timeout-ms",
&hw_margin[0], 1, 2);
if (ret < 0 && ret != -EINVAL)
return ret;
if (ret == 1)
hw_margin_max = hw_margin[0];
if (ret == 2) {
hw_margin_max = hw_margin[1];
hw_margin_min = hw_margin[0];
}
ret = bd957x_set_wdt_mode(priv, hw_margin_max, hw_margin_min);
if (ret)
return ret;
priv->always_running = of_property_read_bool(np, "always-running");
watchdog_set_drvdata(&priv->wdd, priv);
priv->wdd.info = &bd957x_wdt_ident;
priv->wdd.ops = &bd957x_wdt_ops;
priv->wdd.min_hw_heartbeat_ms = hw_margin_min;
priv->wdd.max_hw_heartbeat_ms = hw_margin_max;
priv->wdd.parent = dev;
priv->wdd.timeout = WATCHDOG_TIMEOUT;
watchdog_init_timeout(&priv->wdd, 0, dev);
watchdog_set_nowayout(&priv->wdd, nowayout);
watchdog_stop_on_reboot(&priv->wdd);
if (priv->always_running)
bd9576_wdt_start(&priv->wdd);
return devm_watchdog_register_device(dev, &priv->wdd);
}
static struct platform_driver bd9576_wdt_driver = {
.driver = {
.name = "bd9576-wdt",
},
.probe = bd9576_wdt_probe,
};
module_platform_driver(bd9576_wdt_driver);
MODULE_AUTHOR("Matti Vaittinen <matti.vaittinen@fi.rohmeurope.com>");
MODULE_DESCRIPTION("ROHM BD9576/BD9573 Watchdog driver");
MODULE_LICENSE("GPL");
MODULE_ALIAS("platform:bd9576-wdt");
/* SPDX-License-Identifier: GPL-2.0-or-later */
/* Copyright (C) 2021 ROHM Semiconductors */
#ifndef __LINUX_MFD_BD957X_H__
#define __LINUX_MFD_BD957X_H__
enum {
BD957X_VD50,
BD957X_VD18,
BD957X_VDDDR,
BD957X_VD10,
BD957X_VOUTL1,
BD957X_VOUTS1,
};
/*
* The BD9576 has own IRQ 'blocks' for:
* - I2C/thermal,
* - Over voltage protection
* - Short-circuit protection
* - Over current protection
* - Over voltage detection
* - Under voltage detection
* - Under voltage protection
* - 'system interrupt'.
*
* Each of the blocks have a status register giving more accurate IRQ source
* information - for example which of the regulators have over-voltage.
*
* On top of this, there is "main IRQ" status register where each bit indicates
* which of sub-blocks have active IRQs. Fine. That would fit regmap-irq main
* status handling. Except that:
* - Only some sub-IRQs can be masked.
* - The IRQ informs us about fault-condition, not when fault state changes.
* The IRQ line it is kept asserted until the detected condition is acked
* AND cleared in HW. This is annoying for IRQs like the one informing high
* temperature because if IRQ is not disabled it keeps the CPU in IRQ
* handling loop.
*
* For now we do just use the main-IRQ register as source for our IRQ
* information and bind the regmap-irq to this. We leave fine-grained sub-IRQ
* register handling to handlers in sub-devices. The regulator driver shall
* read which regulators are source for problem - or if the detected error is
* regulator temperature error. The sub-drivers do also handle masking of "sub-
* IRQs" if this is supported/needed.
*
* To overcome the problem with HW keeping IRQ asserted we do call
* disable_irq_nosync() from sub-device handler and add a delayed work to
* re-enable IRQ roughly 1 second later. This should keep our CPU out of
* busy-loop.
*/
#define IRQS_SILENT_MS 1000
enum {
BD9576_INT_THERM,
BD9576_INT_OVP,
BD9576_INT_SCP,
BD9576_INT_OCP,
BD9576_INT_OVD,
BD9576_INT_UVD,
BD9576_INT_UVP,
BD9576_INT_SYS,
};
#define BD957X_REG_SMRB_ASSERT 0x15
#define BD957X_REG_PMIC_INTERNAL_STAT 0x20
#define BD957X_REG_INT_THERM_STAT 0x23
#define BD957X_REG_INT_THERM_MASK 0x24
#define BD957X_REG_INT_OVP_STAT 0x25
#define BD957X_REG_INT_SCP_STAT 0x26
#define BD957X_REG_INT_OCP_STAT 0x27
#define BD957X_REG_INT_OVD_STAT 0x28
#define BD957X_REG_INT_UVD_STAT 0x29
#define BD957X_REG_INT_UVP_STAT 0x2a
#define BD957X_REG_INT_SYS_STAT 0x2b
#define BD957X_REG_INT_SYS_MASK 0x2c
#define BD957X_REG_INT_MAIN_STAT 0x30
#define BD957X_REG_INT_MAIN_MASK 0x31
#define UVD_IRQ_VALID_MASK 0x6F
#define OVD_IRQ_VALID_MASK 0x2F
#define BD957X_MASK_INT_MAIN_THERM BIT(0)
#define BD957X_MASK_INT_MAIN_OVP BIT(1)
#define BD957X_MASK_INT_MAIN_SCP BIT(2)
#define BD957X_MASK_INT_MAIN_OCP BIT(3)
#define BD957X_MASK_INT_MAIN_OVD BIT(4)
#define BD957X_MASK_INT_MAIN_UVD BIT(5)
#define BD957X_MASK_INT_MAIN_UVP BIT(6)
#define BD957X_MASK_INT_MAIN_SYS BIT(7)
#define BD957X_MASK_INT_ALL 0xff
#define BD957X_REG_WDT_CONF 0x16
#define BD957X_REG_POW_TRIGGER1 0x41
#define BD957X_REG_POW_TRIGGER2 0x42
#define BD957X_REG_POW_TRIGGER3 0x43
#define BD957X_REG_POW_TRIGGER4 0x44
#define BD957X_REG_POW_TRIGGERL1 0x45
#define BD957X_REG_POW_TRIGGERS1 0x46
#define BD957X_REGULATOR_EN_MASK 0xff
#define BD957X_REGULATOR_DIS_VAL 0xff
#define BD957X_VSEL_REG_MASK 0xff
#define BD957X_MASK_VOUT1_TUNE 0x87
#define BD957X_MASK_VOUT2_TUNE 0x87
#define BD957X_MASK_VOUT3_TUNE 0x1f
#define BD957X_MASK_VOUT4_TUNE 0x1f
#define BD957X_MASK_VOUTL1_TUNE 0x87
#define BD957X_REG_VOUT1_TUNE 0x50
#define BD957X_REG_VOUT2_TUNE 0x53
#define BD957X_REG_VOUT3_TUNE 0x56
#define BD957X_REG_VOUT4_TUNE 0x59
#define BD957X_REG_VOUTL1_TUNE 0x5c
#define BD9576_REG_VOUT1_OVD 0x51
#define BD9576_REG_VOUT1_UVD 0x52
#define BD9576_REG_VOUT2_OVD 0x54
#define BD9576_REG_VOUT2_UVD 0x55
#define BD9576_REG_VOUT3_OVD 0x57
#define BD9576_REG_VOUT3_UVD 0x58
#define BD9576_REG_VOUT4_OVD 0x5a
#define BD9576_REG_VOUT4_UVD 0x5b
#define BD9576_REG_VOUTL1_OVD 0x5d
#define BD9576_REG_VOUTL1_UVD 0x5e
#define BD9576_MASK_XVD 0x7f
#define BD9576_REG_VOUT1S_OCW 0x5f
#define BD9576_REG_VOUT1S_OCP 0x60
#define BD9576_MASK_VOUT1S_OCW 0x3f
#define BD9576_MASK_VOUT1S_OCP 0x3f
#define BD957X_MAX_REGISTER 0x61
#endif
......@@ -9,7 +9,9 @@
enum rohm_chip_type {
ROHM_CHIP_TYPE_BD9571,
ROHM_CHIP_TYPE_BD9573,
ROHM_CHIP_TYPE_BD9574,
ROHM_CHIP_TYPE_BD9576,
ROHM_CHIP_TYPE_BD70528,
ROHM_CHIP_TYPE_BD71815,
ROHM_CHIP_TYPE_BD71828,
......
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