Contributors: 18
| Author |
Tokens |
Token Proportion |
Commits |
Commit Proportion |
| Krzysztof Kozlowski |
377 |
33.07% |
13 |
25.00% |
| Sangbeom Kim |
254 |
22.28% |
6 |
11.54% |
| Andre Draszik |
242 |
21.23% |
12 |
23.08% |
| Chanwoo Choi |
96 |
8.42% |
4 |
7.69% |
| Amit Daniel Kachhap |
55 |
4.82% |
1 |
1.92% |
| Thomas Abraham |
24 |
2.11% |
1 |
1.92% |
| Sachin Kamat |
20 |
1.75% |
2 |
3.85% |
| Kaustabh Chakraborty |
19 |
1.67% |
1 |
1.92% |
| Dzmitry Sankouski |
17 |
1.49% |
1 |
1.92% |
| Geert Uytterhoeven |
10 |
0.88% |
1 |
1.92% |
| Mark Brown |
7 |
0.61% |
2 |
3.85% |
| Stuart Menefy |
5 |
0.44% |
2 |
3.85% |
| Alim Akhtar |
4 |
0.35% |
1 |
1.92% |
| Laxman Dewangan |
4 |
0.35% |
1 |
1.92% |
| Tushar Behera |
2 |
0.18% |
1 |
1.92% |
| Yadwinder Singh Brar |
2 |
0.18% |
1 |
1.92% |
| Axel Lin |
1 |
0.09% |
1 |
1.92% |
| Paul Cercueil |
1 |
0.09% |
1 |
1.92% |
| Total |
1140 |
|
52 |
|
// SPDX-License-Identifier: GPL-2.0+
/*
* Copyright 2012 Samsung Electronics Co., Ltd
* http://www.samsung.com
* Copyright 2025 Linaro Ltd.
*
* Samsung SxM core driver
*/
#include <linux/device.h>
#include <linux/err.h>
#include <linux/export.h>
#include <linux/interrupt.h>
#include <linux/mfd/core.h>
#include <linux/mfd/samsung/core.h>
#include <linux/mfd/samsung/irq.h>
#include <linux/mfd/samsung/s2mps11.h>
#include <linux/mfd/samsung/s2mps13.h>
#include <linux/module.h>
#include <linux/of.h>
#include <linux/pm.h>
#include <linux/pm_runtime.h>
#include <linux/regmap.h>
#include "sec-core.h"
static const struct mfd_cell s5m8767_devs[] = {
MFD_CELL_NAME("s5m8767-pmic"),
MFD_CELL_NAME("s5m-rtc"),
MFD_CELL_OF("s5m8767-clk", NULL, NULL, 0, 0, "samsung,s5m8767-clk"),
};
static const struct mfd_cell s2dos05_devs[] = {
MFD_CELL_NAME("s2dos05-regulator"),
};
static const struct mfd_cell s2mpg10_devs[] = {
MFD_CELL_NAME("s2mpg10-meter"),
MFD_CELL_NAME("s2mpg10-regulator"),
MFD_CELL_NAME("s2mpg10-rtc"),
MFD_CELL_OF("s2mpg10-clk", NULL, NULL, 0, 0, "samsung,s2mpg10-clk"),
MFD_CELL_OF("s2mpg10-gpio", NULL, NULL, 0, 0, "samsung,s2mpg10-gpio"),
};
static const struct mfd_cell s2mps11_devs[] = {
MFD_CELL_NAME("s2mps11-regulator"),
MFD_CELL_NAME("s2mps14-rtc"),
MFD_CELL_OF("s2mps11-clk", NULL, NULL, 0, 0, "samsung,s2mps11-clk"),
};
static const struct mfd_cell s2mps13_devs[] = {
MFD_CELL_NAME("s2mps13-regulator"),
MFD_CELL_NAME("s2mps13-rtc"),
MFD_CELL_OF("s2mps13-clk", NULL, NULL, 0, 0, "samsung,s2mps13-clk"),
};
static const struct mfd_cell s2mps14_devs[] = {
MFD_CELL_NAME("s2mps14-regulator"),
MFD_CELL_NAME("s2mps14-rtc"),
MFD_CELL_OF("s2mps14-clk", NULL, NULL, 0, 0, "samsung,s2mps14-clk"),
};
static const struct mfd_cell s2mps15_devs[] = {
MFD_CELL_NAME("s2mps15-regulator"),
MFD_CELL_NAME("s2mps15-rtc"),
MFD_CELL_OF("s2mps13-clk", NULL, NULL, 0, 0, "samsung,s2mps13-clk"),
};
static const struct mfd_cell s2mpa01_devs[] = {
MFD_CELL_NAME("s2mpa01-pmic"),
MFD_CELL_NAME("s2mps14-rtc"),
};
static const struct mfd_cell s2mpu02_devs[] = {
MFD_CELL_NAME("s2mpu02-regulator"),
};
static const struct mfd_cell s2mpu05_devs[] = {
MFD_CELL_NAME("s2mpu05-regulator"),
MFD_CELL_NAME("s2mps15-rtc"),
};
static void sec_pmic_dump_rev(struct sec_pmic_dev *sec_pmic)
{
unsigned int val;
/* For s2mpg1x, the revision is in a different regmap */
if (sec_pmic->device_type == S2MPG10)
return;
/* For each device type, the REG_ID is always the first register */
if (!regmap_read(sec_pmic->regmap_pmic, S2MPS11_REG_ID, &val))
dev_dbg(sec_pmic->dev, "Revision: 0x%x\n", val);
}
static void sec_pmic_configure(struct sec_pmic_dev *sec_pmic)
{
int err;
if (sec_pmic->device_type != S2MPS13X)
return;
if (sec_pmic->pdata->disable_wrstbi) {
/*
* If WRSTBI pin is pulled down this feature must be disabled
* because each Suspend to RAM will trigger buck voltage reset
* to default values.
*/
err = regmap_update_bits(sec_pmic->regmap_pmic,
S2MPS13_REG_WRSTBI,
S2MPS13_REG_WRSTBI_MASK, 0x0);
if (err)
dev_warn(sec_pmic->dev,
"Cannot initialize WRSTBI config: %d\n",
err);
}
}
/*
* Only the common platform data elements for s5m8767 are parsed here from the
* device tree. Other sub-modules of s5m8767 such as pmic, rtc , charger and
* others have to parse their own platform data elements from device tree.
*
* The s5m8767 platform data structure is instantiated here and the drivers for
* the sub-modules need not instantiate another instance while parsing their
* platform data.
*/
static struct sec_platform_data *
sec_pmic_parse_dt_pdata(struct device *dev)
{
struct sec_platform_data *pd;
pd = devm_kzalloc(dev, sizeof(*pd), GFP_KERNEL);
if (!pd)
return ERR_PTR(-ENOMEM);
pd->manual_poweroff = of_property_read_bool(dev->of_node,
"samsung,s2mps11-acokb-ground");
pd->disable_wrstbi = of_property_read_bool(dev->of_node,
"samsung,s2mps11-wrstbi-ground");
return pd;
}
int sec_pmic_probe(struct device *dev, int device_type, unsigned int irq,
struct regmap *regmap, struct i2c_client *client)
{
struct sec_platform_data *pdata;
const struct mfd_cell *sec_devs;
struct sec_pmic_dev *sec_pmic;
int ret, num_sec_devs;
sec_pmic = devm_kzalloc(dev, sizeof(*sec_pmic), GFP_KERNEL);
if (!sec_pmic)
return -ENOMEM;
dev_set_drvdata(dev, sec_pmic);
sec_pmic->dev = dev;
sec_pmic->device_type = device_type;
sec_pmic->i2c = client;
sec_pmic->irq = irq;
sec_pmic->regmap_pmic = regmap;
pdata = sec_pmic_parse_dt_pdata(sec_pmic->dev);
if (IS_ERR(pdata)) {
ret = PTR_ERR(pdata);
return ret;
}
sec_pmic->pdata = pdata;
ret = sec_irq_init(sec_pmic);
if (ret)
return ret;
pm_runtime_set_active(sec_pmic->dev);
switch (sec_pmic->device_type) {
case S5M8767X:
sec_devs = s5m8767_devs;
num_sec_devs = ARRAY_SIZE(s5m8767_devs);
break;
case S2DOS05:
sec_devs = s2dos05_devs;
num_sec_devs = ARRAY_SIZE(s2dos05_devs);
break;
case S2MPA01:
sec_devs = s2mpa01_devs;
num_sec_devs = ARRAY_SIZE(s2mpa01_devs);
break;
case S2MPG10:
sec_devs = s2mpg10_devs;
num_sec_devs = ARRAY_SIZE(s2mpg10_devs);
break;
case S2MPS11X:
sec_devs = s2mps11_devs;
num_sec_devs = ARRAY_SIZE(s2mps11_devs);
break;
case S2MPS13X:
sec_devs = s2mps13_devs;
num_sec_devs = ARRAY_SIZE(s2mps13_devs);
break;
case S2MPS14X:
sec_devs = s2mps14_devs;
num_sec_devs = ARRAY_SIZE(s2mps14_devs);
break;
case S2MPS15X:
sec_devs = s2mps15_devs;
num_sec_devs = ARRAY_SIZE(s2mps15_devs);
break;
case S2MPU02:
sec_devs = s2mpu02_devs;
num_sec_devs = ARRAY_SIZE(s2mpu02_devs);
break;
case S2MPU05:
sec_devs = s2mpu05_devs;
num_sec_devs = ARRAY_SIZE(s2mpu05_devs);
break;
default:
return dev_err_probe(sec_pmic->dev, -EINVAL,
"Unsupported device type %d\n",
sec_pmic->device_type);
}
ret = devm_mfd_add_devices(sec_pmic->dev, -1, sec_devs, num_sec_devs,
NULL, 0, NULL);
if (ret)
return ret;
sec_pmic_configure(sec_pmic);
sec_pmic_dump_rev(sec_pmic);
return ret;
}
EXPORT_SYMBOL_GPL(sec_pmic_probe);
void sec_pmic_shutdown(struct device *dev)
{
struct sec_pmic_dev *sec_pmic = dev_get_drvdata(dev);
unsigned int reg, mask;
if (!sec_pmic->pdata->manual_poweroff)
return;
switch (sec_pmic->device_type) {
case S2MPS11X:
reg = S2MPS11_REG_CTRL1;
mask = S2MPS11_CTRL1_PWRHOLD_MASK;
break;
default:
/*
* Currently only one board with S2MPS11 needs this, so just
* ignore the rest.
*/
dev_warn(sec_pmic->dev,
"Unsupported device %d for manual power off\n",
sec_pmic->device_type);
return;
}
regmap_update_bits(sec_pmic->regmap_pmic, reg, mask, 0);
}
EXPORT_SYMBOL_GPL(sec_pmic_shutdown);
static int sec_pmic_suspend(struct device *dev)
{
struct sec_pmic_dev *sec_pmic = dev_get_drvdata(dev);
if (device_may_wakeup(dev))
enable_irq_wake(sec_pmic->irq);
/*
* PMIC IRQ must be disabled during suspend for RTC alarm
* to work properly.
* When device is woken up from suspend, an
* interrupt occurs before resuming I2C bus controller.
* The interrupt is handled by regmap_irq_thread which tries
* to read RTC registers. This read fails (I2C is still
* suspended) and RTC Alarm interrupt is disabled.
*/
disable_irq(sec_pmic->irq);
return 0;
}
static int sec_pmic_resume(struct device *dev)
{
struct sec_pmic_dev *sec_pmic = dev_get_drvdata(dev);
if (device_may_wakeup(dev))
disable_irq_wake(sec_pmic->irq);
enable_irq(sec_pmic->irq);
return 0;
}
DEFINE_SIMPLE_DEV_PM_OPS(sec_pmic_pm_ops, sec_pmic_suspend, sec_pmic_resume);
EXPORT_SYMBOL_GPL(sec_pmic_pm_ops);
MODULE_AUTHOR("Chanwoo Choi <cw00.choi@samsung.com>");
MODULE_AUTHOR("Krzysztof Kozlowski <krzk@kernel.org>");
MODULE_AUTHOR("Sangbeom Kim <sbkim73@samsung.com>");
MODULE_AUTHOR("André Draszik <andre.draszik@linaro.org>");
MODULE_DESCRIPTION("Core driver for the Samsung S5M");
MODULE_LICENSE("GPL");