提交 6f1c1e71 编写于 作者: J Javier Martinez Canillas 提交者: Lee Jones

mfd: max77686: Convert to use regmap_irq

By using the generic IRQ support in the Register map API, it
is possible to get rid max77686-irq.c and simplify the code.
Suggested-by: NKrzysztof Kozlowski <k.kozlowski@samsung.com>
Signed-off-by: NJavier Martinez Canillas <javier.martinez@collabora.co.uk>
Reviewed-by: NDoug Anderson <dianders@chromium.org>
Tested-by: NDoug Anderson <dianders@chromium.org>
Signed-off-by: NLee Jones <lee.jones@linaro.org>
上级 4eb9560b
......@@ -384,6 +384,7 @@ config MFD_MAX77686
depends on I2C=y
select MFD_CORE
select REGMAP_I2C
select REGMAP_IRQ
select IRQ_DOMAIN
help
Say yes here to add support for Maxim Semiconductor MAX77686.
......
......@@ -115,7 +115,7 @@ da9063-objs := da9063-core.o da9063-irq.o da9063-i2c.o
obj-$(CONFIG_MFD_DA9063) += da9063.o
obj-$(CONFIG_MFD_MAX14577) += max14577.o
obj-$(CONFIG_MFD_MAX77686) += max77686.o max77686-irq.o
obj-$(CONFIG_MFD_MAX77686) += max77686.o
obj-$(CONFIG_MFD_MAX77693) += max77693.o
obj-$(CONFIG_MFD_MAX8907) += max8907.o
max8925-objs := max8925-core.o max8925-i2c.o
......
/*
* max77686-irq.c - Interrupt controller support for MAX77686
*
* Copyright (C) 2012 Samsung Electronics Co.Ltd
* Chiwoong Byun <woong.byun@samsung.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.
*
* 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.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
* This driver is based on max8997-irq.c
*/
#include <linux/err.h>
#include <linux/irq.h>
#include <linux/interrupt.h>
#include <linux/gpio.h>
#include <linux/mfd/max77686.h>
#include <linux/mfd/max77686-private.h>
#include <linux/irqdomain.h>
#include <linux/regmap.h>
enum {
MAX77686_DEBUG_IRQ_INFO = 1 << 0,
MAX77686_DEBUG_IRQ_MASK = 1 << 1,
MAX77686_DEBUG_IRQ_INT = 1 << 2,
};
static int debug_mask = 0;
module_param(debug_mask, int, 0);
MODULE_PARM_DESC(debug_mask, "Set debug_mask : 0x0=off 0x1=IRQ_INFO 0x2=IRQ_MASK 0x4=IRQ_INI)");
static const u8 max77686_mask_reg[] = {
[PMIC_INT1] = MAX77686_REG_INT1MSK,
[PMIC_INT2] = MAX77686_REG_INT2MSK,
[RTC_INT] = MAX77686_RTC_INTM,
};
static struct regmap *max77686_get_regmap(struct max77686_dev *max77686,
enum max77686_irq_source src)
{
switch (src) {
case PMIC_INT1 ... PMIC_INT2:
return max77686->regmap;
case RTC_INT:
return max77686->rtc_regmap;
default:
return ERR_PTR(-EINVAL);
}
}
struct max77686_irq_data {
int mask;
enum max77686_irq_source group;
};
#define DECLARE_IRQ(idx, _group, _mask) \
[(idx)] = { .group = (_group), .mask = (_mask) }
static const struct max77686_irq_data max77686_irqs[] = {
DECLARE_IRQ(MAX77686_PMICIRQ_PWRONF, PMIC_INT1, 1 << 0),
DECLARE_IRQ(MAX77686_PMICIRQ_PWRONR, PMIC_INT1, 1 << 1),
DECLARE_IRQ(MAX77686_PMICIRQ_JIGONBF, PMIC_INT1, 1 << 2),
DECLARE_IRQ(MAX77686_PMICIRQ_JIGONBR, PMIC_INT1, 1 << 3),
DECLARE_IRQ(MAX77686_PMICIRQ_ACOKBF, PMIC_INT1, 1 << 4),
DECLARE_IRQ(MAX77686_PMICIRQ_ACOKBR, PMIC_INT1, 1 << 5),
DECLARE_IRQ(MAX77686_PMICIRQ_ONKEY1S, PMIC_INT1, 1 << 6),
DECLARE_IRQ(MAX77686_PMICIRQ_MRSTB, PMIC_INT1, 1 << 7),
DECLARE_IRQ(MAX77686_PMICIRQ_140C, PMIC_INT2, 1 << 0),
DECLARE_IRQ(MAX77686_PMICIRQ_120C, PMIC_INT2, 1 << 1),
DECLARE_IRQ(MAX77686_RTCIRQ_RTC60S, RTC_INT, 1 << 0),
DECLARE_IRQ(MAX77686_RTCIRQ_RTCA1, RTC_INT, 1 << 1),
DECLARE_IRQ(MAX77686_RTCIRQ_RTCA2, RTC_INT, 1 << 2),
DECLARE_IRQ(MAX77686_RTCIRQ_SMPL, RTC_INT, 1 << 3),
DECLARE_IRQ(MAX77686_RTCIRQ_RTC1S, RTC_INT, 1 << 4),
DECLARE_IRQ(MAX77686_RTCIRQ_WTSR, RTC_INT, 1 << 5),
};
static void max77686_irq_lock(struct irq_data *data)
{
struct max77686_dev *max77686 = irq_get_chip_data(data->irq);
if (debug_mask & MAX77686_DEBUG_IRQ_MASK)
pr_info("%s\n", __func__);
mutex_lock(&max77686->irqlock);
}
static void max77686_irq_sync_unlock(struct irq_data *data)
{
struct max77686_dev *max77686 = irq_get_chip_data(data->irq);
int i;
for (i = 0; i < MAX77686_IRQ_GROUP_NR; i++) {
u8 mask_reg = max77686_mask_reg[i];
struct regmap *map = max77686_get_regmap(max77686, i);
if (debug_mask & MAX77686_DEBUG_IRQ_MASK)
pr_debug("%s: mask_reg[%d]=0x%x, cur=0x%x\n",
__func__, i, mask_reg, max77686->irq_masks_cur[i]);
if (mask_reg == MAX77686_REG_INVALID ||
IS_ERR_OR_NULL(map))
continue;
max77686->irq_masks_cache[i] = max77686->irq_masks_cur[i];
regmap_write(map, max77686_mask_reg[i],
max77686->irq_masks_cur[i]);
}
mutex_unlock(&max77686->irqlock);
}
static const inline struct max77686_irq_data *to_max77686_irq(int irq)
{
struct irq_data *data = irq_get_irq_data(irq);
return &max77686_irqs[data->hwirq];
}
static void max77686_irq_mask(struct irq_data *data)
{
struct max77686_dev *max77686 = irq_get_chip_data(data->irq);
const struct max77686_irq_data *irq_data = to_max77686_irq(data->irq);
max77686->irq_masks_cur[irq_data->group] |= irq_data->mask;
if (debug_mask & MAX77686_DEBUG_IRQ_MASK)
pr_info("%s: group=%d, cur=0x%x\n",
__func__, irq_data->group,
max77686->irq_masks_cur[irq_data->group]);
}
static void max77686_irq_unmask(struct irq_data *data)
{
struct max77686_dev *max77686 = irq_get_chip_data(data->irq);
const struct max77686_irq_data *irq_data = to_max77686_irq(data->irq);
max77686->irq_masks_cur[irq_data->group] &= ~irq_data->mask;
if (debug_mask & MAX77686_DEBUG_IRQ_MASK)
pr_info("%s: group=%d, cur=0x%x\n",
__func__, irq_data->group,
max77686->irq_masks_cur[irq_data->group]);
}
static struct irq_chip max77686_irq_chip = {
.name = "max77686",
.irq_bus_lock = max77686_irq_lock,
.irq_bus_sync_unlock = max77686_irq_sync_unlock,
.irq_mask = max77686_irq_mask,
.irq_unmask = max77686_irq_unmask,
};
static irqreturn_t max77686_irq_thread(int irq, void *data)
{
struct max77686_dev *max77686 = data;
unsigned int irq_reg[MAX77686_IRQ_GROUP_NR] = {};
unsigned int irq_src;
int ret;
int i, cur_irq;
ret = regmap_read(max77686->regmap, MAX77686_REG_INTSRC, &irq_src);
if (ret < 0) {
dev_err(max77686->dev, "Failed to read interrupt source: %d\n",
ret);
return IRQ_NONE;
}
if (debug_mask & MAX77686_DEBUG_IRQ_INT)
pr_info("%s: irq_src=0x%x\n", __func__, irq_src);
if (irq_src == MAX77686_IRQSRC_PMIC) {
ret = regmap_bulk_read(max77686->regmap,
MAX77686_REG_INT1, irq_reg, 2);
if (ret < 0) {
dev_err(max77686->dev, "Failed to read interrupt source: %d\n",
ret);
return IRQ_NONE;
}
if (debug_mask & MAX77686_DEBUG_IRQ_INT)
pr_info("%s: int1=0x%x, int2=0x%x\n", __func__,
irq_reg[PMIC_INT1], irq_reg[PMIC_INT2]);
}
if (irq_src & MAX77686_IRQSRC_RTC) {
ret = regmap_read(max77686->rtc_regmap,
MAX77686_RTC_INT, &irq_reg[RTC_INT]);
if (ret < 0) {
dev_err(max77686->dev, "Failed to read interrupt source: %d\n",
ret);
return IRQ_NONE;
}
if (debug_mask & MAX77686_DEBUG_IRQ_INT)
pr_info("%s: rtc int=0x%x\n", __func__,
irq_reg[RTC_INT]);
}
for (i = 0; i < MAX77686_IRQ_GROUP_NR; i++)
irq_reg[i] &= ~max77686->irq_masks_cur[i];
for (i = 0; i < MAX77686_IRQ_NR; i++) {
if (irq_reg[max77686_irqs[i].group] & max77686_irqs[i].mask) {
cur_irq = irq_find_mapping(max77686->irq_domain, i);
if (cur_irq)
handle_nested_irq(cur_irq);
}
}
return IRQ_HANDLED;
}
static int max77686_irq_domain_map(struct irq_domain *d, unsigned int irq,
irq_hw_number_t hw)
{
struct max77686_dev *max77686 = d->host_data;
irq_set_chip_data(irq, max77686);
irq_set_chip_and_handler(irq, &max77686_irq_chip, handle_edge_irq);
irq_set_nested_thread(irq, 1);
#ifdef CONFIG_ARM
set_irq_flags(irq, IRQF_VALID);
#else
irq_set_noprobe(irq);
#endif
return 0;
}
static struct irq_domain_ops max77686_irq_domain_ops = {
.map = max77686_irq_domain_map,
};
int max77686_irq_init(struct max77686_dev *max77686)
{
struct irq_domain *domain;
int i;
int ret;
int val;
struct regmap *map;
mutex_init(&max77686->irqlock);
if (max77686->irq_gpio && !max77686->irq) {
max77686->irq = gpio_to_irq(max77686->irq_gpio);
if (debug_mask & MAX77686_DEBUG_IRQ_INT) {
ret = gpio_request(max77686->irq_gpio, "pmic_irq");
if (ret < 0) {
dev_err(max77686->dev,
"Failed to request gpio %d with ret:"
"%d\n", max77686->irq_gpio, ret);
return IRQ_NONE;
}
gpio_direction_input(max77686->irq_gpio);
val = gpio_get_value(max77686->irq_gpio);
gpio_free(max77686->irq_gpio);
pr_info("%s: gpio_irq=%x\n", __func__, val);
}
}
if (!max77686->irq) {
dev_err(max77686->dev, "irq is not specified\n");
return -ENODEV;
}
/* Mask individual interrupt sources */
for (i = 0; i < MAX77686_IRQ_GROUP_NR; i++) {
max77686->irq_masks_cur[i] = 0xff;
max77686->irq_masks_cache[i] = 0xff;
map = max77686_get_regmap(max77686, i);
if (IS_ERR_OR_NULL(map))
continue;
if (max77686_mask_reg[i] == MAX77686_REG_INVALID)
continue;
regmap_write(map, max77686_mask_reg[i], 0xff);
}
domain = irq_domain_add_linear(NULL, MAX77686_IRQ_NR,
&max77686_irq_domain_ops, max77686);
if (!domain) {
dev_err(max77686->dev, "could not create irq domain\n");
return -ENODEV;
}
max77686->irq_domain = domain;
ret = request_threaded_irq(max77686->irq, NULL, max77686_irq_thread,
IRQF_TRIGGER_FALLING | IRQF_ONESHOT,
"max77686-irq", max77686);
if (ret)
dev_err(max77686->dev, "Failed to request IRQ %d: %d\n",
max77686->irq, ret);
if (debug_mask & MAX77686_DEBUG_IRQ_INFO)
pr_info("%s-\n", __func__);
return 0;
}
void max77686_irq_exit(struct max77686_dev *max77686)
{
if (max77686->irq)
free_irq(max77686->irq, max77686);
}
......@@ -25,6 +25,8 @@
#include <linux/export.h>
#include <linux/slab.h>
#include <linux/i2c.h>
#include <linux/irq.h>
#include <linux/interrupt.h>
#include <linux/pm_runtime.h>
#include <linux/module.h>
#include <linux/mfd/core.h>
......@@ -46,6 +48,54 @@ static struct regmap_config max77686_regmap_config = {
.val_bits = 8,
};
static struct regmap_config max77686_rtc_regmap_config = {
.reg_bits = 8,
.val_bits = 8,
};
static const struct regmap_irq max77686_irqs[] = {
/* INT1 interrupts */
{ .reg_offset = 0, .mask = MAX77686_INT1_PWRONF_MSK, },
{ .reg_offset = 0, .mask = MAX77686_INT1_PWRONR_MSK, },
{ .reg_offset = 0, .mask = MAX77686_INT1_JIGONBF_MSK, },
{ .reg_offset = 0, .mask = MAX77686_INT1_JIGONBR_MSK, },
{ .reg_offset = 0, .mask = MAX77686_INT1_ACOKBF_MSK, },
{ .reg_offset = 0, .mask = MAX77686_INT1_ACOKBR_MSK, },
{ .reg_offset = 0, .mask = MAX77686_INT1_ONKEY1S_MSK, },
{ .reg_offset = 0, .mask = MAX77686_INT1_MRSTB_MSK, },
/* INT2 interrupts */
{ .reg_offset = 1, .mask = MAX77686_INT2_140C_MSK, },
{ .reg_offset = 1, .mask = MAX77686_INT2_120C_MSK, },
};
static const struct regmap_irq_chip max77686_irq_chip = {
.name = "max77686-pmic",
.status_base = MAX77686_REG_INT1,
.mask_base = MAX77686_REG_INT1MSK,
.num_regs = 2,
.irqs = max77686_irqs,
.num_irqs = ARRAY_SIZE(max77686_irqs),
};
static const struct regmap_irq max77686_rtc_irqs[] = {
/* RTC interrupts */
{ .reg_offset = 0, .mask = MAX77686_RTCINT_RTC60S_MSK, },
{ .reg_offset = 0, .mask = MAX77686_RTCINT_RTCA1_MSK, },
{ .reg_offset = 0, .mask = MAX77686_RTCINT_RTCA2_MSK, },
{ .reg_offset = 0, .mask = MAX77686_RTCINT_SMPL_MSK, },
{ .reg_offset = 0, .mask = MAX77686_RTCINT_RTC1S_MSK, },
{ .reg_offset = 0, .mask = MAX77686_RTCINT_WTSR_MSK, },
};
static const struct regmap_irq_chip max77686_rtc_irq_chip = {
.name = "max77686-rtc",
.status_base = MAX77686_RTC_INT,
.mask_base = MAX77686_RTC_INTM,
.num_regs = 1,
.irqs = max77686_rtc_irqs,
.num_irqs = ARRAY_SIZE(max77686_rtc_irqs),
};
#ifdef CONFIG_OF
static const struct of_device_id max77686_pmic_dt_match[] = {
{.compatible = "maxim,max77686", .data = NULL},
......@@ -101,7 +151,6 @@ static int max77686_i2c_probe(struct i2c_client *i2c,
max77686->type = id->driver_data;
max77686->wakeup = pdata->wakeup;
max77686->irq_gpio = pdata->irq_gpio;
max77686->irq = i2c->irq;
max77686->regmap = devm_regmap_init_i2c(i2c, &max77686_regmap_config);
......@@ -117,8 +166,7 @@ static int max77686_i2c_probe(struct i2c_client *i2c,
dev_err(max77686->dev,
"device not found on this channel (this is not an error)\n");
return -ENODEV;
} else
dev_info(max77686->dev, "device found\n");
}
max77686->rtc = i2c_new_dummy(i2c->adapter, I2C_ADDR_RTC);
if (!max77686->rtc) {
......@@ -127,15 +175,48 @@ static int max77686_i2c_probe(struct i2c_client *i2c,
}
i2c_set_clientdata(max77686->rtc, max77686);
max77686_irq_init(max77686);
max77686->rtc_regmap = devm_regmap_init_i2c(max77686->rtc,
&max77686_rtc_regmap_config);
if (IS_ERR(max77686->rtc_regmap)) {
ret = PTR_ERR(max77686->rtc_regmap);
dev_err(max77686->dev, "failed to allocate RTC regmap: %d\n",
ret);
goto err_unregister_i2c;
}
ret = regmap_add_irq_chip(max77686->regmap, max77686->irq,
IRQF_TRIGGER_FALLING | IRQF_ONESHOT |
IRQF_SHARED, 0, &max77686_irq_chip,
&max77686->irq_data);
if (ret != 0) {
dev_err(&i2c->dev, "failed to add PMIC irq chip: %d\n", ret);
goto err_unregister_i2c;
}
ret = regmap_add_irq_chip(max77686->rtc_regmap, max77686->irq,
IRQF_TRIGGER_FALLING | IRQF_ONESHOT |
IRQF_SHARED, 0, &max77686_rtc_irq_chip,
&max77686->rtc_irq_data);
if (ret != 0) {
dev_err(&i2c->dev, "failed to add RTC irq chip: %d\n", ret);
goto err_del_irqc;
}
ret = mfd_add_devices(max77686->dev, -1, max77686_devs,
ARRAY_SIZE(max77686_devs), NULL, 0, NULL);
if (ret < 0) {
mfd_remove_devices(max77686->dev);
i2c_unregister_device(max77686->rtc);
dev_err(&i2c->dev, "failed to add MFD devices: %d\n", ret);
goto err_del_rtc_irqc;
}
return 0;
err_del_rtc_irqc:
regmap_del_irq_chip(max77686->irq, max77686->rtc_irq_data);
err_del_irqc:
regmap_del_irq_chip(max77686->irq, max77686->irq_data);
err_unregister_i2c:
i2c_unregister_device(max77686->rtc);
return ret;
}
......@@ -144,6 +225,10 @@ static int max77686_i2c_remove(struct i2c_client *i2c)
struct max77686_dev *max77686 = i2c_get_clientdata(i2c);
mfd_remove_devices(max77686->dev);
regmap_del_irq_chip(max77686->irq, max77686->rtc_irq_data);
regmap_del_irq_chip(max77686->irq, max77686->irq_data);
i2c_unregister_device(max77686->rtc);
return 0;
......
......@@ -492,16 +492,11 @@ static int max77686_rtc_init_reg(struct max77686_rtc_info *info)
return ret;
}
static struct regmap_config max77686_rtc_regmap_config = {
.reg_bits = 8,
.val_bits = 8,
};
static int max77686_rtc_probe(struct platform_device *pdev)
{
struct max77686_dev *max77686 = dev_get_drvdata(pdev->dev.parent);
struct max77686_rtc_info *info;
int ret, virq;
int ret;
dev_info(&pdev->dev, "%s\n", __func__);
......@@ -514,14 +509,7 @@ static int max77686_rtc_probe(struct platform_device *pdev)
info->dev = &pdev->dev;
info->max77686 = max77686;
info->rtc = max77686->rtc;
info->max77686->rtc_regmap = devm_regmap_init_i2c(info->max77686->rtc,
&max77686_rtc_regmap_config);
if (IS_ERR(info->max77686->rtc_regmap)) {
ret = PTR_ERR(info->max77686->rtc_regmap);
dev_err(info->max77686->dev, "Failed to allocate register map: %d\n",
ret);
return ret;
}
platform_set_drvdata(pdev, info);
ret = max77686_rtc_init_reg(info);
......@@ -550,15 +538,16 @@ static int max77686_rtc_probe(struct platform_device *pdev)
ret = -EINVAL;
goto err_rtc;
}
virq = irq_create_mapping(max77686->irq_domain, MAX77686_RTCIRQ_RTCA1);
if (!virq) {
info->virq = regmap_irq_get_virq(max77686->rtc_irq_data,
MAX77686_RTCIRQ_RTCA1);
if (!info->virq) {
ret = -ENXIO;
goto err_rtc;
}
info->virq = virq;
ret = devm_request_threaded_irq(&pdev->dev, virq, NULL,
max77686_rtc_alarm_irq, 0, "rtc-alarm0", info);
ret = devm_request_threaded_irq(&pdev->dev, info->virq, NULL,
max77686_rtc_alarm_irq, 0, "rtc-alarm1", info);
if (ret < 0)
dev_err(&pdev->dev, "Failed to request alarm IRQ: %d: %d\n",
info->virq, ret);
......
......@@ -181,9 +181,6 @@ enum max77686_rtc_reg {
MAX77686_ALARM2_DATE = 0x1B,
};
#define MAX77686_IRQSRC_PMIC (0)
#define MAX77686_IRQSRC_RTC (1 << 0)
enum max77686_irq_source {
PMIC_INT1 = 0,
PMIC_INT2,
......@@ -205,16 +202,33 @@ enum max77686_irq {
MAX77686_PMICIRQ_140C,
MAX77686_PMICIRQ_120C,
MAX77686_RTCIRQ_RTC60S,
MAX77686_RTCIRQ_RTC60S = 0,
MAX77686_RTCIRQ_RTCA1,
MAX77686_RTCIRQ_RTCA2,
MAX77686_RTCIRQ_SMPL,
MAX77686_RTCIRQ_RTC1S,
MAX77686_RTCIRQ_WTSR,
MAX77686_IRQ_NR,
};
#define MAX77686_INT1_PWRONF_MSK BIT(0)
#define MAX77686_INT1_PWRONR_MSK BIT(1)
#define MAX77686_INT1_JIGONBF_MSK BIT(2)
#define MAX77686_INT1_JIGONBR_MSK BIT(3)
#define MAX77686_INT1_ACOKBF_MSK BIT(4)
#define MAX77686_INT1_ACOKBR_MSK BIT(5)
#define MAX77686_INT1_ONKEY1S_MSK BIT(6)
#define MAX77686_INT1_MRSTB_MSK BIT(7)
#define MAX77686_INT2_140C_MSK BIT(0)
#define MAX77686_INT2_120C_MSK BIT(1)
#define MAX77686_RTCINT_RTC60S_MSK BIT(0)
#define MAX77686_RTCINT_RTCA1_MSK BIT(1)
#define MAX77686_RTCINT_RTCA2_MSK BIT(2)
#define MAX77686_RTCINT_SMPL_MSK BIT(3)
#define MAX77686_RTCINT_RTC1S_MSK BIT(4)
#define MAX77686_RTCINT_WTSR_MSK BIT(5)
struct max77686_dev {
struct device *dev;
struct i2c_client *i2c; /* 0xcc / PMIC, Battery Control, and FLASH */
......@@ -224,11 +238,10 @@ struct max77686_dev {
struct regmap *regmap; /* regmap for mfd */
struct regmap *rtc_regmap; /* regmap for rtc */
struct irq_domain *irq_domain;
struct regmap_irq_chip_data *irq_data;
struct regmap_irq_chip_data *rtc_irq_data;
int irq;
int irq_gpio;
bool wakeup;
struct mutex irqlock;
int irq_masks_cur[MAX77686_IRQ_GROUP_NR];
......
......@@ -89,8 +89,6 @@ struct max77686_opmode_data {
};
struct max77686_platform_data {
/* IRQ */
int irq_gpio;
int ono;
int wakeup;
......
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